CN103162102A - Light-emitting device - Google Patents

Light-emitting device Download PDF

Info

Publication number
CN103162102A
CN103162102A CN2011104084341A CN201110408434A CN103162102A CN 103162102 A CN103162102 A CN 103162102A CN 2011104084341 A CN2011104084341 A CN 2011104084341A CN 201110408434 A CN201110408434 A CN 201110408434A CN 103162102 A CN103162102 A CN 103162102A
Authority
CN
China
Prior art keywords
light
emitting device
electrical connection
luminescence unit
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011104084341A
Other languages
Chinese (zh)
Inventor
杨武璋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GIO Optoelectronics Corp
Original Assignee
GIO Optoelectronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GIO Optoelectronics Corp filed Critical GIO Optoelectronics Corp
Priority to CN2011104084341A priority Critical patent/CN103162102A/en
Publication of CN103162102A publication Critical patent/CN103162102A/en
Pending legal-status Critical Current

Links

Images

Abstract

A light-emitting device is connected with an external power supply. A switch unit is in electric connection with a light-emitting unit to form a series circuit. A first electric connection assembly is in electric connection with the external power supply and the light-emitting unit. A second electric connection assembly is in electric connection with the external power supply and the switch unit. A sensing unit is in electric connection with the first electric connection assembly, the second electric connection assembly and the switch unit and is used for controlling the switch unit to be turned on when the sensing unit senses that current flows between two electric input ends of the first electric connection assembly and current flows between two electric input ends of the second electric connection assembly, so that the light-emitting unit is enabled to be driven by the external power supply to emit light. Therefore, the current generated by the external power supply cannot flow through a current path formed by the first electric connection assembly, the light-emitting unit and the second electric connection assembly, the risk that a user has an electric shock due to the fact that the user carelessly touches the second electric connection assembly by mistake cannot happen, and correspondingly, the user cannot encounter the risk of the electric shock when installing the light-emitting device.

Description

Light-emitting device
Technical field
The present invention is about a kind of light-emitting device, especially in regard to a kind of light-emitting device with light emitting diode (LED).
Background technology
In recent years, in the continuous improvement aspect processing procedure and material, make the luminous efficiency of light emitting diode significantly promote due to light emitting diode (Light Emitting Diode, LED).Be different from general fluorescent lamp or Electricity-saving lamp bulb, therefore the characteristic such as light emitting diode has low power consumption, low pollution, long service life, safe, emission response time is short and volume is little, is used to the electronic product of numerous species widely.Wherein a kind of application is that the light-emitting device that will have light emitting diode is made into the external form the same with known fluorescent tube, is installed on light fixture to replace known fluorescent tube and uses.
Please refer to shown in Figure 1ly, it is a kind of schematic diagram of known light-emitting device 1.Wherein, light-emitting device 1 can comprise a plurality of light emitting diodes (figure does not show), and light-emitting device 1 is the utensil that can convert electrical energy into luminous energy.
Light-emitting device 1 comprises a light-emitting diode lamp tube 11 (hereinafter referred to as fluorescent tube 11) and a light fixture 12, and fluorescent tube 11 comprises two electrical connection modules 111,112 and one body 113.Electrical connection module 111,112 is arranged at respectively the both sides of body 113, and is provided with a plurality of light emitting diodes and driven unit (figure does not show) thereof in body 113.In addition, light fixture 12 can comprise two holders 121,122 and one body 123, holder 121,122 is arranged at respectively the two ends of body 123, and the electrical connection module 111 of fluorescent tube 11,112 can be installed on respectively holder 121,122, by providing an AC power to light-emitting device 1, can light fluorescent tube 11.
Yet; as shown in Figure 1; when the user will be installed on light fixture 12 with fluorescent tube 11; usually can be first with after in Fig. 1, wherein an electrical connection module 111 first be installed on the holder 121 of a side; strut a little with the holder 122 of hand with the opposite side of light fixture 12 again, so that another electrical connection module 112 is installed on holder 122.; when the user struts another holder 122 with hand; first be installed on because of electrical connection module 111 on the holder 121 of light fixture 12; therefore outside AC power has been connected to the electrical connection module 112 of opposite side by light fixture 12, holder 121, electrical connection module 111 and fluorescent tube 11 internal circuits; therefore accidentally during the electrical connection module 112 of false touch opposite side, may produce the danger of electric shock when user this moment.
Therefore, how to provide a kind of light-emitting device, can not have the danger of electric shock when installing, become current important topic.
Summary of the invention
Purpose of the present invention can not have the light-emitting device of the danger of electric shock for providing a kind of when installing.
The present invention can realize by the following technical solutions.
A kind of light-emitting device of the present invention receives an external power source.One switch element and a luminescence unit are electrically connected, to form a series connection circuit.One first electrical connection module is electrically connected external power source and luminescence unit.One second electrical connection module is electrically connected external power source and switch element.One sensing cell is electrically connected the first electrical connection module, the second electrical connection module and switch element, sensing cell sense have electric current to flow through between two electrical inputs of the first electrical connection module and two electrical inputs of the second electrical connection module between when having electric current to flow through, beginning gauge tap unit makes its conducting, so that luminescence unit receives external power source and begins luminous.
In one embodiment of this invention, during the switch element conducting, the electric current that external power source the produces current path that the first electrical connection module, luminescence unit, switch element and the second electrical connection module form of flowing through, and make luminescence unit luminous.
In one embodiment of this invention, during not conducting of switch element, the electric current that external power source produces can't flow through the formed current path of the first electrical connection module, luminescence unit and the second electrical connection module.
In one embodiment of this invention, light-emitting device also comprises: a control module, itself and luminescence unit are electrically connected, and control a plurality of light emitting diodes of luminescence unit luminosity, color, light quantity, light the connection in series-parallel configuration of order or described light emitting diode.
In one embodiment of this invention, control module according to the interruption times of external power source in a special time control the described light emitting diode of luminescence unit luminosity, color, light quantity, light order or the connection in series-parallel configuration of described light emitting diode.
In one embodiment of this invention, control module according to the electric current of luminescence unit of flowing through control the described light emitting diode of luminescence unit luminosity, color, light quantity, light the connection in series-parallel configuration of order or described light emitting diode.
In one embodiment of this invention, light-emitting device also comprises: a control module, and itself and series circuit are electrically connected, and control module changes the series impedance of itself and luminescence unit according to the electric current of luminescence unit.
In one embodiment of this invention, control module has auto-lock function, only the luminosity of the described light emitting diode of disposable change luminescence unit or color or colour temperature or light quantity or light order or the connection in series-parallel configuration of described light emitting diode.
In one embodiment of this invention, light-emitting device also comprises: a signal link, and it connects an input and output is the signal receiver of electric insulation, and the signal link receives one and controls signal, and control module is controlled luminescence unit according to controlling signal.
In one embodiment of this invention, control signal and be sent to another light-emitting device by the signal link, a control module of another light-emitting device is controlled a luminescence unit of another light-emitting device according to the control signal.
In one embodiment of this invention, light-emitting device also comprises: at least one rectification unit, and its output and luminescence unit are electrically connected, and its output current is controlled by switch element.
In one embodiment of this invention, rectification unit also has a first input end and one second input, and the first electrical connection module is electrically connected external power source and first input end, and the second electrical connection module is electrically connected external power source and the second input.
In one embodiment of this invention, luminescence unit comprises at least one alternating-current light emitting diode module.
In one embodiment of this invention, switch element comprises a relay, a transistor or a thyristor.
In one embodiment of this invention, sensing cell has two sensing components, described sensing component whether have electric current to flow through between the described electrical input of sensing the first electrical connection module respectively and the described electrical input of the second electrical connection module between whether have electric current to flow through, and when described two conditions are set up, the gauge tap cell conduction.
In one embodiment of this invention, the input of described sensing component and output are electric insulation.
In one embodiment of this invention, when the switch element conducting make luminescence unit begin luminous after, switch element can continue to keep conducting by the electric current of luminescence unit or the electric current of cross-pressure or light or the switch element of flowing through etc.
In one embodiment of this invention, when the quantity of switch element was two, described switch element was electrically connected to form with luminescence unit and connects, and sensing cell is controlled respectively described switch element, and then it is luminous to control luminescence unit.
In one embodiment of this invention, light-emitting device also comprises: at least one impedance component, and it is electrically connected between the described electrical input of the first electrical connection module, or between the described electrical input of the second electrical connection module.
In one embodiment of this invention, when the quantity of impedance component is two, one of them of described impedance component is electrically connected between the described electrical input of the first electrical connection module, and another of described impedance component is electrically connected between the described electrical input of the second electrical connection module.
In one embodiment of this invention, impedance component is a resistance or an inductance or an electric capacity or a diode or at least one alternating-current light emitting diode or aforesaid combination.
In one embodiment of this invention, the described electrical input of the first electrical connection module and the second electrical connection module matches with the lamp socket of a fluorescent tube respectively.
In one embodiment of this invention, the first electrical connection module and the second electrical connection module lay respectively at relative two ends of luminescence unit.
In one embodiment of this invention, the preset state of switch element is not conducting.
From the above, because of according to have electric current to flow through between two electrical inputs of light-emitting device of the present invention by sensing cell sensing the first electrical connection module and two electrical inputs of the second electrical connection module between when having electric current to flow through, beginning gauge tap cell conduction is so that luminescence unit is luminous.Whereby, when the user only installs the first electrical connection module in lamp socket, sensing cell will be not can actuating switch the unit, therefore the electric current that external power source produces also can't flow through the first electrical connection module, luminescence unit and the formed current path of the second electrical connection module, does not produce the danger of electric shock to the second electrical connection module therefore do not have the careless false touch of user.Therefore, light-emitting device of the present invention does not have the danger of electric shock when installing.
Description of drawings
Fig. 1 is a kind of schematic diagram of known light-emitting device;
Fig. 2 A to Fig. 2 B is respectively the schematic diagram of a kind of light-emitting device of the preferred embodiment of the present invention;
Fig. 3 A to Fig. 3 K is respectively the different circuit diagrams of implementing the light-emitting device of aspect of the present invention;
Fig. 4 A to Fig. 4 B is respectively the schematic diagram of a kind of light-emitting device of another preferred embodiment of the present invention;
Fig. 5 A and Fig. 5 B are respectively the circuit diagram of the light-emitting device of another preferred embodiment of the present invention;
Fig. 6 A and Fig. 6 B are respectively a kind of application schematic diagram of light-emitting device of the present invention; And
Fig. 6 C controls the circuit connection diagram of a light-emitting device by the signal link.
The main element symbol description:
1,2,20,2a～2k, 3,30,3a, 3b, 4,4a, 4b: light-emitting device
11: fluorescent tube
111,112: electrical connection
113: body
12: light fixture
121,122: holder
123: body
21,31,41: luminescence unit
211a～211c, 411a, 411b: light-emitting diode (LED) module
22,22a, 22b, 22c, 22d, 22f, 22g, 32a, 32b, 42: switch element
221c, 222c, 221d, 222d: switching device
23,33,43: the first electrical connections
24,34,44: the second electrical connections
25,35,45: sensing cell
251,252,351,352: sensing device
26,26i, 26j, 26k, 46: control module
261: controller
27,27f: rectification unit
271,272,371,372,471,472, B: rectifying device
28a, 28b: impedance device, alternating-current light emitting diode module
A1, a2, b1, b2, P1, P2: end points
A: anode
A1, B1: the first electrode
A2, B2: the second electrode
AC, AC1～AC4: alternating-current light emitting diode group
C: electric capacity
C1, C2: input
CS, CS1, CS2: sensing signal
D, D1, D2: light emitting diode
E: earth terminal
F: signal link
G: gate
G1, G2, O, O1, O2: output
H: inductor
I, I1～I4, I6～I8: electric current
K: negative electrode
K1, K2: wire
M1, M2, M3, Q1, Q2: transistor
R, R1, R2, R3, Rs: resistance
SCR1: thyristor
SS: control signal
T: signal receiver
The specific embodiment
Hereinafter with reference to relevant drawings, a kind of light-emitting device according to the preferred embodiment of the present invention is described, wherein identical element will be illustrated with identical component symbol.
Please refer to shown in Fig. 2 A, it is the schematic diagram of a kind of light-emitting device 2 of the preferred embodiment of the present invention.
First explanation is, light-emitting device 2 of the present invention does not limit only and known strip fluorescent tube (can be described as again fluorescent tube) compatibility, and only is applied to replace known fluorescent tube.In other embodiments, light-emitting device 2 also can be another kind of implemented aspect and replaces the fluorescent tube of other shape, for example can be the fluorescent tube that replaces circle, mosquito-repellent incense-shaped, square or other shape.In this, do not limited.But, if replace known fluorescent tube, the external form of light-emitting device 2 can be made into identically with known fluorescent tube, and can install and be sticked in the lamp socket of known lamp.In addition, light-emitting device 2 can receive an external power source (figure shows), and the source of external power source can be a mains supply, and its voltage for example can be 110 volts or 220 volts of interchanges, and its frequency for example can be 50 hertz (hertz, Hz), 60 hertz or its multiple.In addition, the source of external power source also can be the electronic ballast of a driving fluorescent lamp, or coil type stabilizer and starter, or a direct current power supply.In this, do not limited.
Light-emitting device 2 comprises a luminescence unit 21, at least one switch element 22, one first electrical connection 23, one second electrical connection 24 and a sensing cell 25.
Luminescence unit 21 can have a plurality of light emitting diode series connection and reach or parallel connection, and described light emitting diode can have the identical or different characteristics of luminescence or size.Wherein, the characteristics of luminescence is such as can be luminous color, colour temperature, power or brightness etc.In addition, luminescence unit 21 also can comprise at least one alternating-current light emitting diode module (alternating current light-emitting diode, AC LED).Wherein, alternating-current light emitting diode module can have a plurality of light emitting diodes, and described light emitting diode for example can be connected and or and be unified into bridge-type, perhaps reversal connection in twos.In this, do not limited.
Switch element 22 can be electrically connected with luminescence unit 21.In this, luminescence unit 21 can be connected in series with switch element 22.Wherein, the preset state of switch element 22 is not conducting, and namely switch element 22 is not when being controlled, and it is cut-off state.Switch element 22 for example can comprise a relay, semiconductor switching device (for example transistor) or a thyristor (silicon-controlled rectifier, SCR), wherein, switch element 22 is preferably the switch of high pressure resistant type, to meet the demand of insulation.
The first electrical connection 23 can be electrically connected external power source and luminescence unit 21.In this, the first electrical connection 23 has two electrical inputs, i.e. one first electrode A 1 and one second electrode A 2, and external power source can be powered to the first electrode A 1 and second electrode A 2 of the first electrical connection 23.
The second electrical connection 24 can be electrically connected external power source and switch element 22.In this, the second electrical connection 24 has two electrical inputs, i.e. one first electrode B 1 and one second electrode B 2, and external power source can be powered to the first electrode B 1 and second electrode B 2 of the second electrical connection 24.Wherein, the described electrical input of the first electrical connection 23 and the second electrical connection 24 (i.e. the first electrode A 1 and the second electrode A 2, the first electrode B 1 and the second electrode B 2) can match with the lamp socket of a fluorescent tube (for example fluorescent tube) respectively.Special one carry be, if when the profile of light-emitting device 2 was identical with known fluorescent tube, the first electrical connection 23 and the second electrical connection 24 can lay respectively at relative two ends of luminescence unit 21.In addition, if when light-emitting device 2 is an annular, U-shaped or W type fluorescent tube, the first electrode A 1 of the first electrical connection 23 and the second electrical connection 24, B1 and the second electrode A 2, B2 can be positioned at luminescence unit 21 the same sides.In this, do not limited.
Special one carry be, the present invention is under initial conditions, when light-emitting device 2 not yet is connected to external power source, because the preset state (preset state of dispatching from the factory) of switch element 22 is not conducting, therefore luminescence unit 21 is not electrically connected with one of them of the first electrical connection 23, the second electrical connection 24 at least.
Sensing cell 25 is electrically connected the first electrical connection 23, the second electrical connection 24 and switch element 22.Wherein, sensing cell 25 can have sensing device, and sensing device 25 better be chosen as input and output sensing device for insulation on electric.Sensing device for example can comprise a photo-coupler (photocoupler) or a coil (for example coil of a relay).
When have electric current to flow through between two electrical inputs (i.e. the first electrode A 1, the second electrode A 2) of sensing cell 25 sensing the first electrical connections 23 and two electrical inputs (i.e. the first electrode B 1, the second electrode B 2) of sensing the second electrical connection 24 between when having electric current to flow through, 22 conductings of controllable switch unit, the first electrical connection 23, luminescence unit 21, switch element 22 and the second formed current path of the electrical connection 24 so that electric current I that external power source produces can be flowed through, and make luminescence unit 21 luminous.But, when if 25 sensings of sensing cell have electric current to flow through between two electrical inputs of a certain electrical connection (for example having electric current to flow through between the first electrode A 1 of a sensing the first electrical connection 23 and the second electrode A 2), switch element 22 can't conducting, therefore, the electric current I of external power source generation also can't flow through the first electrical connection 23, luminescence unit 21 and the second formed current path of electrical connection 24.Therefore, during because of careless false touch the second electrical connection 24, can't produce the danger of electric shock this moment when user installation.
Please refer to shown in Fig. 2 B, it is the schematic diagram of the another kind of light-emitting device 20 of the preferred embodiment of the present invention.Different from Fig. 2 A be in, the switch element 22 of Fig. 2 B is controlled by sensing cell 25 not only, simultaneously controlled by the luminance of luminescence unit 21, make the switch element 22 can be after luminescence unit 21 beginning is luminous, control that must dependence feeling measurement unit 25 just can be kept conducting state, luminescence unit 22 is continued luminous, form a kind of conducting state of similar self-locking, until external power source cuts off.
Below, please respectively with reference to relevant indicators, how to realize the circuit of light-emitting device of the present invention with explanation.Wherein, Fig. 3 A to Fig. 3 J is respectively the different circuit diagrams of implementing the light-emitting device 2a～2j of aspect of the present invention.
Please refer to shown in Fig. 3 A, wherein, the sensing cell 25 of light-emitting device 2a has two sensing devices 251,252.The first electrode A 1 of the first electrical connection 23 and the second electrode A 2 are electrically connected with sensing device 251, and the first electrode B 1 of the second electrical connection 24 and the second electrode B 2 are electrically connected with sensing device 252.In this, the first electrode A 1 and the second electrode A 2 are electrically connected to two ends of a light emitting diode D1 of sensing device 251, and the first electrode B 1 and the second electrode B 2 are electrically connected to two ends of a light emitting diode D2 of sensing device 252.
But whether there is electric current to flow through (for example whether sensing has electric current to flow to the second electrode A 2 by the first electrode A 1) between the first electrode A 1 of sensing device 251 sensing the first electrical connections 23, the second electrode A 2, but and whether has electric current to flow through (for example whether sensing has electric current to flow to the second electrode B 2 by the first electrode B 1) between the first electrode B 1 of sensing device 252 sensing the second electrical connections 24, the second electrode B 2.In this enforcement aspect, sensing device 251,252 is respectively take a photo-coupler as example.Wherein, photo-coupler has advantages of the insulation on electric of input and output, therefore, when sensing device 251,252 detecting current, does not have leakage current between the first electrical connection 23 and the second electrical connection 24 and the danger that causes getting an electric shock.
In addition, can provide a sensing signal CS with gauge tap unit 22a in order to make sensing cell 25, must additionally provide a power supply to use to sensing cell 25.And the source of power supply can be a direct current or an alternating current.In Fig. 3 A, the source that offers the power supply of sensing cell 25 uses is the external power source (being for example an alternating current) that power supply is used to light-emitting device 2a, after a rectifying device B (being for example bridge rectifier) rectification, provide a direct current to use to the photo-coupler of sensing cell 25 via a resistance R, and then make the exportable sensing signal of sensing cell 25 CS.
when the first electrical connection 23 of light-emitting device 2a is installed on a lamp socket and is electrically connected to external power source, be subjected to external power source and have electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2, the light emitting diode D1 of sensing device 251 can be luminous and be made sensing device 251 conductings, this moment is because of not conducting of sensing device 252, therefore sensing cell 25 is output sensing signal CS not, and switch element 22a still is cut-off, therefore as the user when installing, when only first the first electrical connection 23 being inserted lamp sockets and careless and false touch the second electrical connection 24, can't produce the danger of electric shock.
When the second electrical connection 24 of light-emitting device 2a also is mounted to another lamp socket and is electrically connected to external power source, also be subjected to external power source between the first electrode B 1 of the second electrical connection 24 and the second electrode B 2 and have electric current to flow through, the light emitting diode D2 of sensing device 252 can be luminous and make sensing device 252 conductings, and the voltage that this moment, rectifying device B provided will make the exportable sensing signal of sensing cell 25 CS to the coil of switch element 22a.In this, switch element 22a is a relay.Switch element 22a makes its contact conducting because of sensing signal CS its coil of flowing through, the first electrical connection 23, luminescence unit 21, switch element 22a and the second formed current path of the electrical connection 24 therefore electric current I that external power source produces just can be flowed through, and make luminescence unit 21 luminous.
In addition, please refer to shown in Fig. 3 B, the circuit framework of the light-emitting device 2b of Fig. 3 B is identical with light-emitting device 2a haply.From main different being of light-emitting device 2a, the switch element 22b of light-emitting device 2b is a thyristor, and its gate and sensing cell 25 are electrically connected, and can receive sensing signal CS, with the conducting of gauge tap unit 22b.In addition, light-emitting device 2b also can comprise a rectification unit 27, rectification unit 27 comprises rectifying device 271 and rectifying device 272, rectifying device 271 is electrically connected respectively the first electrical connection 23, luminescence unit 21 and sensing cell 25, and rectifying device 272 is electrically connected respectively switch element 22b and the second electrical connection 24.Rectifying device 271 and rectifying device 272 for example can merge formation one bridge rectifier.Rectification unit 27 also can be powered and use to luminescence unit 21 and switch element 22b (thyristor) except the photo-coupler that can provide operating voltage to sensing cell 25 is used.In this, the electric current of rectification unit 27 outputs is controlled by switch element 22a.
When the first electrical connection 23 of light-emitting device 2b and the second electrical connection 24 are electrically connected to external power source respectively, have electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2 and the first electrode B 1 of the second electrical connection 24 and the second electrode B 2 between also have electric current to flow through, but therefore sensing device 251 and sensing device 252 conductings and make sensing cell 25 output sensing signal CS to the gate of thyristor (switch element 22b), but make the thyristor conducting, therefore, luminescence unit 21 can be lit and be luminous.
After luminescence unit 21 beginning was luminous, electric current or cross-pressure or the light that switch element 22b produces in the time of can be luminous by luminescence unit 21 or the characteristics such as electric current of the switch element 22b that flows through itself continued to keep conducting.In the present embodiment, even sensing cell 25 is output sensing signal CS (for example not having electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2) more not for some reason, switch element 22b also will continue conducting because of the electric current of the thyristor of flowing through itself, to form a self-locking circuit (self-latched loop).for example, for example when external power source is the coil type stabilizer that uses of collocation one fluorescent tube and starter, starter only can be in providing a heater current between the first electrode A 1 and the second electrode A 2 and between the first electrode B 1 and the second electrode B 2 when AC power just starts, heater current can make sensing cell 25 output sensing signal CS to the gate of thyristor (switch element 22b), make thyristor (switch element 22b) but conducting and allow electric current flow through luminescence unit 21, after luminescence unit 21 (being fluorescent tube) beginning is luminous, starter namely can stop providing heater current, the i.e. output sensing signal CS more not of sensing cell 25 this moment, but it is luminous that luminescence unit 21 still can continue because of the self-locking circuit of thyristor.
In addition, please refer to shown in Fig. 3 C, the circuit framework of the light-emitting device 2c of Fig. 3 C is identical with light-emitting device 2b haply.From main different being of light-emitting device 2b, the switch element 22c of light-emitting device 2c has two switching device 221c, 222c and a resistance R 1, and switching device 221c, 222c are respectively a relay, and is electrically connected with luminescence unit 21 respectively.
When the first electrical connection 23 of light-emitting device 2c and the second electrical connection 24 are electrically connected to external power source respectively, there is electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2, and also there is electric current to flow through between the first electrode B 1 of the second electrical connection 24 and the second electrode B 2, but therefore sensing device 251 and sensing device 252 conductings and make the exportable sensing signal of sensing cell 25 CS to the coil of the switching device 221c of switch element 22c, make the contact conducting of switching device 221c, and then make luminescence unit 21 luminous.at this moment, end points P1 because of luminescence unit 21 2 sides, has cross-pressure (being to be lit voltage difference because of luminescence unit 21 between end points P1 and P2) between P2, and this cross-pressure will produce an electric current I 1 via the flow through coil of switching device 222c of resistance R 1, and then make switching device 222c conducting and produce self-locking circuit, even sensing cell 25 is the coil of output sensing signal CS input switch unit 221c and make switching device 221c cut-off more not for some reason, switching device 222c still continues conducting because of the end points P1 of luminescence unit 21 and the voltage difference between P2, so also can form self-locking circuit.
In addition, please refer to shown in Fig. 3 D, the circuit framework of the light-emitting device 2d of Fig. 3 D is identical with light-emitting device 2c haply.From main different being of light-emitting device 2c, the switching device 222d of the switch element 22d of light-emitting device 2d is a photo-coupler, and switching device 221d, 222d are electrically connected with luminescence unit 21 respectively.
When the first electrical connection 23 of light-emitting device 2d and the second electrical connection 24 are electrically connected to external power source respectively, there is electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2, and also there is electric current to flow through between the first electrode B 1 of the second electrical connection 24 and the second electrode B 2, but therefore sensing device 251 and sensing device 252 conductings and make the exportable sensing signal of sensing cell 25 CS to the switching device 221d of switch element 22d, make the contact conducting of switching device 221d, and then make luminescence unit 21 luminous.At this moment, has cross-pressure between end points P1, P2 because of luminescence unit 21 both sides, and this cross-pressure with generation current I1 via the resistance R 1 switching device 222d (the light emitting diode D of photo-coupler) that flows through, and then can set up one flow through sensing cell 25 resistance R, switching device 222d electric current I 2 and flow to the coil of switching device 221d and produce self-locking circuit.Even sensing cell 25 is output sensing signal CS more not for some reason, switching device 221d still can continue because of the conducting of switching device 222d conducting (because still having voltage difference between the end points P1 of luminescence unit 21 and P2), so also can form self-locking circuit.
In addition, please refer to shown in Fig. 3 E, the circuit framework of the light-emitting device 2e of Fig. 3 E is identical with light-emitting device 2a haply.From main different being of light-emitting device 2a, light-emitting device 2e has two rectifying devices 271,272, rectifying device 271,272 output O1, O2 are electrically connected to respectively luminescence unit 21, and rectifying device 271, the 272 and first electrical connection 23 and the second electrical connection 24 are electrically connected mutually.Wherein, rectifying device 271,272 forms the framework of a full-wave rectifier.
In addition, please refer to shown in Fig. 3 F, the circuit framework of the light-emitting device 2f of Fig. 3 F is identical with light-emitting device 2b haply.From main different being of light-emitting device 2b, the rectification unit 27f of light-emitting device 2f is comprised of bridge rectifier, and rectification unit 27f (bridge rectifier) has a first input end C1 and alternating-current light emitting diode module 28a electric connection, one second input C2 and an alternating-current light emitting diode module 28b are electrically connected.The first electrical connection 23 is electrically connected external power source and alternating-current light emitting diode module 28a, and the second electrical connection 24 is electrically connected external power source and alternating-current light emitting diode module 28b.The setting of alternating-current light emitting diode module 28a, 28b makes bridge rectifier can accept the first electrode A 1 and the second electrode A 2 from the first electrical connection 23, and from the first electrode B 1 of the second electrical connection 24 and the AC power of the second electrode B 2, and can can't not receive external power source because the installation direction of light-emitting device 2f is different.
In addition, light-emitting device 2f also can comprise at least one impedance device, and impedance device can be electrically connected between the described electrical input of the first electrical connection 23 or between the described electrical input of the second electrical connection 24.in the present embodiment, with two alternating-current light emitting diode module 28a, 28b is example as impedance device, and alternating-current light emitting diode module 28a is electrically connected between first electrode A 1 and the second electrode A 2 of the first electrical connection 23, and the first electrode A 1 and the second electrode A 2 are electrically connected first input end C1 by alternating-current light emitting diode module 28a, and alternating-current light emitting diode module 28b is electrically connected between first electrode B 1 and the second electrode B 2 of the second electrical connection 24, and the first electrode B 1 and the second electrode B 2 are electrically connected the second input C2 by alternating-current light emitting diode module 28b.Wherein, impedance device can be a resistance or an inductance or an electric capacity or a diode or at least one alternating-current light emitting diode module or aforesaid combination.In the present embodiment, alternating-current light emitting diode module 28a comprises two the alternating-current light emitting diode AC1 of group, AC2, and alternating-current light emitting diode module 28b comprises that two the alternating-current light emitting diode AC3 of group, AC4 are example.Wherein, each alternating-current light emitting diode AC1～AC4 of group has respectively two light emitting diodes, and the reversal connection in twos of described light emitting diode, and the alternating-current light emitting diode of two reversal connections in twos is connected in series again.But the quantity of the alternating-current light emitting diode of the quantity of the light emitting diode of reversal connection and serial connection is also non-limiting mutually, and in other enforcement aspect, its quantity can be difference.
The setting of impedance device can directly replace light-emitting device 2f knownly to have the fluorescent tube (or fluorescent tube) of stabilizer and needn't take off starter, the stabilizer of light fixture, or the circuit of change light fixture.wherein, as light-emitting device 2f when replacing the known fluorescent tube that is connected to coil type stabilizer and starter, suppose that the first electrode A 1 connects an end of civil power, the coil type stabilizer connects the other end and first electrode B 1 of civil power, starter is connected to the second electrode A 2, between B2, when initial power supply, switch element 22f is not conducting, this moment, line voltage can be via the coil type stabilizer through the first electrode B 1, impedance device 28b, the second electrode B 2 arrives an end of starter, and via the first electrode A 1, alternating-current light emitting diode module 28a, the second electrode A 2 arrives the other end of starter, during initial power supply, the high pressure of civil power can make the starter conducting cause a heater current, this heater current is at alternating-current light emitting diode module 28a, the upper generation of 28b pressure drop, make the first electrode A 1, the second 2 of electrode A and the first electrode B 1, the second 2 of electrode B produce voltage difference, this voltage difference makes respectively sensing device 251, 252 input generation current, sensing cell 25 thereby output sensing signal CS and make switch element 22f conducting, it is luminous so lamp current can flow through luminescence unit 21.after switch element 22f conducting, lamp current can flow between first input end C1 and the second input C2, namely lamp current can be by flow through the first electrode A 1 of the first electrical connection 23 of civil power, the diode (forward bias voltage drop person) of alternating-current light emitting diode module 28a, the first input end C1 of rectification unit 27f (bridge rectifier) and output O, luminescence unit 21, switch element 22f (this moment of conducting), the earth terminal E of switch element 22f, the earth terminal E of rectification unit 27f (bridge rectifier) and the second input C2, the diode (forward bias voltage drop person) of alternating-current light emitting diode module 28b, flow to the coil type stabilizer through the first electrode B 1, return civil power.So this moment the second electrode A 2 of receiving of starter, B2 two ends because switch element 22f conducting no longer sense high pressure, so no longer conducting of starter, and luminescence unit 21 continue luminous during, starter can not move again.Therefore, when light-emitting device 2f is replaced the known fluorescent tube that is connected to coil type stabilizer and starter, can not need take off starter, stabilizer or change the circuit of light fixture.
In addition; as light-emitting device 2f when replacing the known fluorescent tube that is connected to electronic ballast; whether electronic ballast usually can be detected heater current and exist; there are this moment two kinds of current paths can provide the heater current loop of emulation to detect for electronic ballast; it is respectively to flow between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2 (through alternating-current light emitting diode module 28a), or in first electrode B 1 and 2 of the second electrode B mobile (through alternating-current light emitting diode module 28b) of the second electrical connection 24.In this, the function of impedance device 28a, 28b is just as the filament of known fluorescent tube with electric stabilizer.Therefore, the setting of impedance device (alternating-current light emitting diode module 28a, 28b) can directly replace light-emitting device 2f knownly to have the fluorescent tube (or fluorescent tube) of stabilizer and needn't take off starter, the stabilizer of light fixture, or the circuit of change light fixture.
In addition, main different of light-emitting device 2f and light-emitting device 2b also have, and the switch element 22f of light-emitting device 2f uses single thyristor, but comprises the electronic circuit of transistor Q1, Q2, but its circuit theory is identical with thyristor.In detail, the switch element 22f of light-emitting device 2f is by two transistor Q1, Q2 and two electronic circuits that resistance R 1, R2 form.When all having electric current to flow through between the first electrode A 1 of the first electrical connection 23 and the second electrode A 2 and between the first electrode B 1 of the second electrical connection 24 and the second electrode B 2, the base stage of the transistor Q2 of sensing cell 25 exportable sensing signal CS and input switch unit 22f, but make switch element 22f conducting and luminescence unit 21 be lit and luminous.After switch element 22f conducting, transistor Q2 can provide the required base current of transistor Q1, and transistor Q1 can provide the required base current of transistor Q2, and namely switch element 22f is in the conducting state of a self-locking.
After luminescence unit 21 beginnings were luminous, switch element 22f can continue to keep conducting by the circuit characteristic of itself.Even sensing cell 25 is output sensing signal CS more not for some reason, switch element 22f still continues conducting because of the characteristic of the electronic circuit of transistor Q1, Q2, to form a self-locking circuit.
In addition, please refer to shown in Fig. 3 G, the circuit framework of the light-emitting device 2g of Fig. 3 G is identical with light-emitting device 2f haply.From main different being of light-emitting device 2f, switch element 22g is a relay.In addition, light-emitting device 2g does not have rectification unit, connect mutually and the luminescence unit 21 of light-emitting device 2g can have a plurality of alternating-current light emitting diode AC of group, and each alternating-current light emitting diode AC of group can have two light emitting diodes, and the reversal connection in twos of described light emitting diode.In other words, external power source is directly inputted the luminescence unit 21 of the alternating-current light emitting diode AC of group with a plurality of serial connections without rectification unit, and therefore, light-emitting device 2g is the light-emitting device of an alternating-current light emitting diode.
In addition, please refer to shown in Fig. 3 H, the circuit framework of the light-emitting device 2h of Fig. 3 H is identical with light-emitting device 2b haply.From main different being of the light-emitting device 2b of Fig. 3 B, light-emitting device 2h also can comprise a control module 26, and control module 26 is electrically connected with luminescence unit 21.Wherein, control module 26 can be connected in series or in parallel with luminescence unit 21, and perhaps, control module 26 also can be connected with the part of luminescence unit 21, and is connected in parallel with another part.Control module 26 can control the described light emitting diode of luminescence unit 21 luminosity, color, light quantity and or light order or the connection in series-parallel configuration of described light emitting diode.Wherein, control module 26 can be the control circuit of a numeral or simulation.In this, take an analog circuit as example.
In addition, luminescence unit 21 can have a plurality of light-emitting diode (LED) module 211a～211c, graphic in each module 211a～211c only draw a light emitting diode, but during practical application, it can be a plurality of light emitting diodes series connection and or in parallel.In the present embodiment, take three groups of light-emitting diode (LED) module 211a～211c as example, and each light-emitting diode (LED) module 211a～211c can represent a plurality of light emitting diodes, and the light emitting diode number in each light-emitting diode (LED) module 211a～211c can be not identical, and described light emitting diode can be series, parallel or series-parallel combination.
In the present embodiment, control module 26 is electrically connected with luminescence unit 21, and can control according to the electric current of the luminescence unit 21 of flowing through the connection in series-parallel configuration of light-emitting diode (LED) module 211b and light-emitting diode (LED) module 211c.Wherein, control module 26 has three transistor M1, M2, M3 and a thyristor SCR1, the gate G of thyristor SCR1 is connected with a resistance R s with negative electrode K (cathode), and the gate of transistor M1 is connected with the anode A (anode) of thyristor SCR1, the gate of transistor M3 is connected with the drain (drain) of transistor M1, and the gate of transistor M2 is connected with the drain (drain) of transistor M3 through resistance R 3.Therefore, can control by control module 26 the connection in series-parallel configuration of luminescence unit 21.in other words, when the first electrical connection 23 and the second electrical connection 24 connect external power source, the exportable sensing signal of sensing cell 25 CS is with actuating switch unit 22b, at this moment, if flow through the pressure reduction of less its two end of the electric current of resistance R s less (gate G and the pressure reduction between negative electrode K of thyristor SCR1 are also less), thyristor SCR1 cut-off state, and the gate of transistor M1 is high potential and conducting, the gate of transistor M3 is that electronegative potential ends, the gate of transistor M2 is high potential and conducting, make light-emitting diode (LED) module 211b and light-emitting diode (LED) module 211c in parallel.Therefore, the connection in series-parallel configuration of the light-emitting diode (LED) module 211a～211c of luminescence unit 21 is: after light-emitting diode (LED) module 211b parallel-connection light-emitting diodes module 211c, then connect with light-emitting diode (LED) module 211a.
when the electric current of the resistance R s that flows through control module 26 larger, the pressure reduction of its two end also can be larger, when pressure reduction surpasses the gate G starting resistor of thyristor SCR1, thyristor SCR1 is with conducting, electric current I 3 will flow through thyristor SCR1 and resistance R 1, it is that electronegative potential enters cut-off state that electric current I 3 makes the gate of transistor M1, it is high potential and conducting that transistor M1 cut-off makes the gate of transistor M3, make electric current I 4 flow through transistor M3, it is that electronegative potential enters cut-off state that electric current I 4 makes the gate of transistor M2, and light-emitting diode (LED) module 211b will be transformed into the configuration of connecting by parallel connection with light-emitting diode (LED) module 211c.When the light-emitting diode (LED) module 211a～211c of luminescence unit 21 is series connection, the internal driving that makes luminescence unit 21 is become large (quantity of connecting because of light emitting diode makes greatly its impedance become large) can reduce the electric current of flowing through, avoid luminescence unit 21 to burn because the electric current that flows through is excessive, or can reduce whereby the power output of luminescence unit 21.Simultaneously, namely can enter the self-locking conducting state after thyristor SCR1 conducting, the connection in series-parallel configuration that also can not make again light-emitting diode (LED) module 211a～211c produce to change even electric current diminishes again, be maintained to stop power supply till.Therefore, control module 26 can be controlled according to the electric current of the described light-emitting diode (LED) module 211a～211c that flows through the connection in series-parallel configuration of described light-emitting diode (LED) module 211a～211c.
Please refer to shown in Fig. 3 I, the circuit framework of the light-emitting device 2i of Fig. 3 I is identical with light-emitting device 2h haply.From main different being of the light-emitting device 2h of Fig. 3 H, the control module 26i of light-emitting device 2i controls luminescence unit 21 according to the interruption times of external power source in a special time.In other words, the control module 26i of light-emitting device 2i can have a controller 261, controller 261 can comprise analog or digital circuit (for example microcontroller), calculating the interruption times of external power source in a special time, with luminosity, the color of controlling light-emitting device 2i, light quantity, light the connection in series-parallel configuration of order or described light emitting diode.Wherein, the gate of the output of controller 261 and transistor M1 is electrically connected, to control conducting or the cut-off of transistor M1.
When power switch (figure show) when switching for the first time (the power-on switch is to light light-emitting device 2i for the first time), the first electrical connection 23 and the second electrical connection 24 can connect external power source, and the exportable sensing signal of sensing cell 25 CS is with actuating switch unit 22b, at this moment, controller 261 is exported high potentials and is made its conducting to the gate of transistor M1, is not lit therefore light-emitting diode (LED) module 211b is bypassed (only having light-emitting diode (LED) module 211a to be lit).When power switch switches for the second time, controller 261 output one electronegative potentials are to the gate of transistor M1, therefore transistor M1 is cut-off state, make electric current I can flow through light-emitting diode (LED) module 211b and light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211b and light-emitting diode (LED) module 211a are lit.Moreover when power switch switched for the third time, controller 261 was exported once again a high potential and is made its conducting to the gate of transistor M1, makes light-emitting diode (LED) module 211b extinguish once again.Therefore, light-emitting device 2i can have the multisection type light regulating technology, and can decide according to the switching times of the power switch in the set time luminescence unit 21 light emitting diode amount of luminescence so that adjust luminosity and light quantity, and this power switch can be the switch that is arranged on wall or on lamp socket.Therefore, light-emitting device 2i can not need change house service and reaches the effect of dimming energy-saving.
In addition, please refer to shown in Fig. 3 J, wherein, control module 26 is connected with luminescence unit 21, and according to the electric current change of luminescence unit 21 and the series impedance of luminescence unit 21, whereby can be in response to different situations or input voltage, to improve the power utilization efficient of inputting luminescence unit 21 or to reduce its power output.
The circuit framework of the light-emitting device 2j of Fig. 3 J is identical with light-emitting device 2h haply.Be with the light-emitting device 2h main difference of Fig. 3 H, light-emitting device 2j only has a thyristor SCR1, the gate of the anode A of thyristor SCR1 and transistor M1 is electrically connected, and two ends of the gate G of thyristor SCR1 and negative electrode K and resistance R s are electrically connected.When the first electrical connection 23 and the second electrical connection 24 connect external power source, sensing cell 25 output sensing signal CS are with actuating switch unit 22b, the pressure reduction of less its two end of electric current of resistance R s is less if flow through this moment, therefore not conducting of thyristor SCR1, and the gate of transistor M1 is high potential and conducting, therefore two ends of resistance R 1 by short circuit, make the electric current I that flows through luminescence unit 21 can flow through resistance R s and switch element 22b and do not flow through resistance R 1.
The pressure reduction of its two end also can be larger when the electric current of the resistance R s of the control module 26j that flows through is large, when pressure reduction surpasses the gate G starting resistor of thyristor SCR1, thyristor SCR1 conducting, make electric current I 7 can flow through thyristor SCR1 and make the gate of transistor M1 become electronegative potential, therefore transistor M1 is cut-off state, resistance R 1 will form the electric current I that connect configuration and reduce the luminescence unit 21 of flowing through with luminescence unit 21, and then can reach the increase series impedance with the flow through purpose of electric current I of luminescence unit 21 of restriction.Simultaneously, namely can enter the self-locking conducting state after thyristor SCR1 conducting, the configuration of connecting that also can not make again resistance R 1 and luminescence unit 21 produces and changes even electric current diminishes again, be maintained to stop power supply till.Therefore, control module 26j can change according to the electric current I of the luminescence unit 21 of flowing through the series impedance of itself and luminescence unit 21.
Please refer to shown in Fig. 3 K, the circuit framework of the light-emitting device 2k of Fig. 3 K is identical with light-emitting device 2i haply.From main different being of the light-emitting device 2i of Fig. 3 I, the control module 26k of light-emitting device 2k controls the glow color of luminescence unit 21 according to the interruption times of external power source in a special time.In other words, the control module 26k of light-emitting device 2k can have a controller 261, controller 261 can comprise analog or digital circuit (for example microcontroller), to calculate the interruption times of external power source in a special time, to control the glow color of light-emitting device 2k.Wherein, the output G1 of controller 261 and the gate of transistor M1 are electrically connected, and to control conducting or the cut-off of transistor M1, the output G2 of controller 261 and the gate of transistor M2 are electrically connected, to control conducting or the cut-off of transistor M2.Wherein, transistor M1 connects with light-emitting diode (LED) module 211b, and transistor M2 connects with light-emitting diode (LED) module 211c.In addition, light-emitting diode (LED) module 211b has different glow colors from light-emitting diode (LED) module 211c.In this, light-emitting diode (LED) module 211a connects with light-emitting diode (LED) module 211b and transistor M1, and light-emitting diode (LED) module 211a connects with light-emitting diode (LED) module 211c and transistor M2.
when power switch (figure show) when switching for the first time (the power-on switch is to light light-emitting device 2k for the first time), the first electrical connection 23 and the second electrical connection 24 can connect external power source, and the exportable sensing signal of sensing cell 25 CS is with actuating switch unit 22b, at this moment, controller 261 output G1 export high potentials and make its conducting to the gate of transistor M1, make electric current I can flow through light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211b, therefore light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211b are lit, make its cut-off with the output G2 of Time Controller 261 output one electronegative potential to the gate of transistor M2, therefore light-emitting diode (LED) module 211c does not light, so the glow color of light-emitting device 2k is the secondary colour of light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211b glow color.Wherein, power switch can be the switch that is arranged on wall or on lamp socket.
When power switch switches for the second time, output G1 output one electronegative potential of controller 261 is to the gate of transistor M1, therefore transistor M1 is cut-off state, one high potential of output G2 output simultaneously is to the gate of transistor M2, therefore transistor M2 is conducting state, this moment, light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211c were lit, and light-emitting diode (LED) module 211b does not light, so the glow color of light-emitting device 2k is changed into the secondary colour of light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211c glow color.
Moreover, when power switch switches for the third time, controller 261 is exported once again a high potential and is made its conducting to the gate of transistor M1, and export an electronegative potential and make its cut-off to the gate of transistor M2, make light-emitting diode (LED) module 211a and light-emitting diode (LED) module 211b be lit, and light-emitting diode (LED) module 211c extinguishes, so glow color is changed again.Therefore, light-emitting device 2k can have multisection type light modulation (glow color, colour temperature) technology, and can adjust according to the switching times of the power switch in the set time glow color or the colour temperature of luminescence unit 21.Therefore, light-emitting device 2k can not need change house service and reaches the effect of light modulation (glow color, colour temperature).
Please refer to shown in Fig. 4 A, it is the schematic diagram of a kind of light-emitting device 3 of another preferred embodiment of the present invention.From main different being of the light-emitting device 2 of Fig. 2, the quantity of the switch element of light-emitting device 3 is two, and one of them switch element 32a is electrically connected respectively the first electrical connection 33 and luminescence unit 31, and another switch element 32b is electrically connected respectively the second electrical connection 34 and luminescence unit 31.Therefore, the first electrode A 1 of the first electrical connection 33 and the second electrode A 2 and gauge tap unit 32a but whether sensing cell 35 current sensors flow through.In addition, but also whether flow through the first electrode B 1 of the second electrical connection 34 and the second electrode B 2 and gauge tap unit 32b of current sensor of sensing cell 35.Therefore, when sensing cell 35 current sensors flow through the first electrode A 1 and second electrode A 2 of the first electrical connection 33, and current sensor is when flowing through the first electrode B 1 of the second electrical connection 34 and the second electrode B 2, can distinguish gauge tap unit 32a, 32b conducting, and then it is luminous to control luminescence unit 31.
Please refer to shown in Fig. 4 B, it is the schematic diagram of a kind of light-emitting device 30 of another preferred embodiment of the present invention.From main different being of the light-emitting device 3 of Fig. 4 A, switch element 32a, the 32b of Fig. 4 B also forms self-locking circuits with luminescence unit 31, and can after luminescence unit 31 beginnings are luminous, keep the state of a self-locking conducting.
Please respectively with reference to shown in Fig. 5 A and Fig. 5 B, it is respectively the light-emitting device 3a of another preferred embodiment of the present invention, the circuit diagram of 3b.
As shown in Fig. 5 A, switch element 32a, 32b are respectively a relay, and sensing cell 35 can comprise the coil of switch element 32a and the coil of switch element 32b.Therefore, when the first electrode A 1 and second electrode A 2 of the first electrical connection 33 has electric current to flow through, and when the first electrode B 1 of the second electrical connection 34 and the second electrode B 2 have electric current to flow through, the coil of expression switch element 32a and the coil of switch element 32b also have electric current to flow through, therefore, the contact of the contact of switch element 32a and switch element 32b can be switched on respectively and luminescence unit 31 is lit.In this, being connected in series order and can changing between switch element 32a, 32b and luminescence unit 31.
As shown in Fig. 5 B, the circuit framework of the light-emitting device 3b of Fig. 5 B is identical with light-emitting device 2b haply.From main different being of light-emitting device 2b, light-emitting device 3b has two switch element 32a, 32b, and switch element 32a is electrically connected luminescence unit 31 and rectifying device 371, and switch element 32b is electrically connected luminescence unit 31 and rectifying device 372.In addition, exportable sensing signal CS1 gauge tap unit 32a conducting when having electric current to flow through between the first electrode A 1 of sensing device 351 sensing the first electrical connections 33, the second electrode A 2, exportable sensing signal CS2 gauge tap unit 32b conducting when having electric current to flow through between the first electrode B 1 of sensing device 352 sensing the second electrical connections 34, the second electrode B 2, and then it is luminous to control luminescence unit 31.In this, being connected in series order and can changing between switch element 32a, 32b and luminescence unit 31.
In addition, please refer to shown in Fig. 6 A, it is a kind of application schematic diagram of light-emitting device of the present invention.In this, light-emitting device 4,4a, 4b are respectively a strip fluorescent tube, certainly not as limit.Wherein, each light-emitting device 4,4a, 4b can have the assembly (for example sensing cell, luminescence unit, switch element) of above-mentioned light-emitting device 2,2a～2j, 3,3a～3b.In addition, each light-emitting device 4,4a, 4b also can have above-mentioned light-emitting device 2h, 2i or the control module of 2j (figure does not show).
In addition, each light-emitting device 4,4a, 4b also can comprise respectively a signal link F, in this, signal link F can lay respectively on the electrical connection of light-emitting device 4,4a, 4b (for example on illustrated the first electrical connection 43), and can connect an input and output is the signal receiver of electric insulation.Wherein, what signal link F can receive that an inductor H produces one controls signal SS, and the control module of light-emitting device 4 can to control its luminescence unit (figure shows) luminous according to controlling signal SS.In addition, also can will control signal SS by signal link F and be sent to another light-emitting device, for example will control signal SS by light-emitting device 4 by wire K1 and be sent to light-emitting device 4a, then wire K2 will control signal SS and be sent to light-emitting device 4b.And the control module of light-emitting device 4a, 4b also can be controlled respectively the luminosity of its luminescence unit according to control signal SS.
In the present embodiment, inductor H can be a radio influence device, an infrared inductor or a ultrasonic, is not limited in this; Control signal SS and can be radio signals, an infra-red signal or a ultrasonic signal.In addition, as shown in Figure 6A, inductor H can be arranged at the outside of light-emitting device 4; Perhaps also can be as shown in Fig. 6 B, inductor H can be arranged at the inside of light-emitting device 4.In this, do not limited the setting position of inductor H.In addition, the required power supply of inductor can be provided by light-emitting device 4, also can be provided by other external power source.
For example, when inductor H sensing one object (for example human body) near a specific range in the time, inductor H can send and control signal SS and input light-emitting device 4 via wire by signal link F, and the control module of light-emitting device 4 can receive and controls signal SS, and according to control signal SS control its luminescence unit automatically increase its luminosity (for example by half bright become entirely bright).Also can be sent to by the signal link F of light-emitting device 4 light-emitting device 4a and control signal SS, and then be sent to another light-emitting device 4b, automatically to increase respectively the luminosity of the luminescence unit of light-emitting device 4a, 4b.
Please refer to shown in Fig. 6 C, it is for controlling the circuit connection diagram of a light-emitting device 4 by signal link F.Wherein, control signal SS and be coupled to the control module 46 of light-emitting device 4 by a signal receiver T.In this, signal receiver T is a photo-coupler, and signal link F is connected to signal receiver T.Signal receiver T has advantages of that input and output are electric insulation.
in the present embodiment, when the first electrical connection 43 of light-emitting device 4 and the second electrical connection 44 are electrically connected to external power source respectively, have electric current to flow through between the first electrode A 1 of the first electrical connection 43 and the second electrode A 2 and the first electrode B 1 of the second electrical connection 44 and the second electrode B 2 between also have electric current to flow through, therefore the exportable sensing signal of sensing cell 45 CS is to switch element 42 (thyristor), make switch element 42 conductings, at this moment, the gate of transistor M1 be high potential and conducting (so the time control not input signal receiver T of signal SS, therefore not conducting of signal receiver T), it is not luminous therefore the light-emitting diode (LED) module 411b of luminescence unit 41 is bypassed.Therefore, in luminescence unit 41, electric current I only flows through light-emitting diode (LED) module 411a and does not flow through light-emitting diode (LED) module 411b, makes to only have light-emitting diode (LED) module 411a to be lit and luminous.
when inductor H sensing human body proximity light-emitting device 4, inductor H can send and control signal SS, and be coupled to the signal receiver T of the control module 46 of light-emitting device 4 by signal link F, make signal receiver T thereby conducting, therefore electric current I 8 can be flowed through signal receiver T and be made the gate of transistor M1 become electronegative potential, therefore transistor M1 is cut-off state, make light-emitting diode (LED) module 411b not be bypassed, therefore electric current I can flow through light-emitting diode (LED) module 411a and the light-emitting diode (LED) module 411b of luminescence unit 41, make light-emitting diode (LED) module 411a and light-emitting diode (LED) module 411b to be lit and luminous.
Therefore, when inductor H sensing human body proximity light-emitting device 4, inductor H can send and control signal SS, and will control by signal link F the control module 46 that signal SS is coupled to light-emitting device 4, and then can automatically increase the luminosity of the luminescence unit 41 of light-emitting device 4.
In addition, other technical characterictic of light-emitting device 4 can with reference to above-mentioned light-emitting device, repeat no more in this.
In sum, because of according to have electric current to flow through between two electrical inputs of light-emitting device of the present invention by sensing cell sensing the first electrical connection and and two electrical inputs of the second electrical connection between when having electric current to flow through, beginning gauge tap cell conduction is so that luminescence unit is luminous.Whereby, when the user only installs the first electrical connection in lamp socket, sensing cell will be not can actuating switch the unit, therefore the electric current that external power source produces also can't flow through the first electrical connection, luminescence unit and the formed current path of the second electrical connection, does not produce the danger of electric shock to the second electrical connection therefore do not have the careless false touch of user.Therefore, light-emitting device of the present invention does not have the danger of electric shock when installing.
The above is only illustrative, and non-limiting.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be included in the claim limited range.

Claims (23)

1. a light-emitting device, receive an external power source, it is characterized in that, described light-emitting device comprises:
One luminescence unit;
At least one switch element is electrically connected with described luminescence unit, to form a series connection circuit;
One first electrical connection module is electrically connected described external power source and described luminescence unit;
One second electrical connection module is electrically connected described external power source and described switch element; And
One sensing cell, be electrically connected described the first electrical connection module, described the second electrical connection module and described switch element, have electric current to flow through between two electrical inputs of described the first electrical connection module of described sensing cell sensing and two electrical inputs of described the second electrical connection module between when having electric current to flow through, begin to control described switch element conducting, luminous so that described luminescence unit receives described external power source.
2. light-emitting device according to claim 1, it is characterized in that, during described switch element conducting, the electric current that described external power source the produces current path that described the first electrical connection module, described luminescence unit, described switch element and described the second electrical connection module form of flowing through, and make described luminescence unit luminous.
3. light-emitting device according to claim 1, it is characterized in that, during described not conducting of switch element, the electric current that described external power source produces can't flow through described the first electrical connection module, described luminescence unit and the formed current path of described the second electrical connection module.
4. light-emitting device according to claim 1, is characterized in that, also comprises:
One control module is electrically connected with described luminescence unit, and control a plurality of light emitting diodes of described luminescence unit luminosity, color, colour temperature, light quantity, light the connection in series-parallel configuration of order or described light emitting diode.
5. light-emitting device according to claim 4, it is characterized in that, described control module according to the interruption times of described external power source in a special time control the described light emitting diode of described luminescence unit luminosity, color, colour temperature, light quantity, light order or the connection in series-parallel configuration of described light emitting diode.
6. light-emitting device according to claim 4, it is characterized in that, described control module according to the electric current of the described luminescence unit of flowing through control the described light emitting diode of described luminescence unit luminosity, color, colour temperature, light quantity, light the connection in series-parallel configuration of order or described light emitting diode.
7. light-emitting device according to claim 1, is characterized in that, also comprises:
One control module is electrically connected with described series circuit, and described control module changes the series impedance of itself and described luminescence unit according to the electric current of described luminescence unit.
8. according to claim 6 or 7 described light-emitting devices, it is characterized in that, described control module has auto-lock function, only the luminosity of the described light emitting diode of the described luminescence unit of disposable change or color or colour temperature or light quantity or light order or the connection in series-parallel configuration of described light emitting diode.
9. light-emitting device according to claim 4, is characterized in that, also comprises:
One signal link, connecting an input and an output is the signal receiver of electric insulation, and described signal link receives one and controls signal, and described control module is controlled described luminescence unit according to described control signal.
10. light-emitting device according to claim 9, it is characterized in that, described control signal is sent to another light-emitting device by described signal link, and a control module of described another light-emitting device is controlled a luminescence unit of described another light-emitting device according to described control signal.
11. light-emitting device according to claim 1 is characterized in that, also comprises:
At least one rectification unit, its output is electrically connected described series circuit.
12. light-emitting device according to claim 11, it is characterized in that, described rectification unit also has a first input end and one second input, described the first electrical connection module is electrically connected described external power source and described first input end, and described the second electrical connection module is electrically connected described external power source and described the second input.
13. light-emitting device according to claim 1 is characterized in that, described luminescence unit comprises at least one alternating-current light emitting diode module.
14. light-emitting device according to claim 1 is characterized in that, described switch element comprises a relay, a transistor or a thyristor.
15. light-emitting device according to claim 1, it is characterized in that, described sensing cell has two sensing components, described sensing component whether have electric current to flow through between the described electrical input of described the first electrical connection module of sensing respectively and the described electrical input of described the second electrical connection module between whether have electric current to flow through.
16. light-emitting device according to claim 15 is characterized in that, the electrical input of described sensing component is electric insulation with electrical output.
17. light-emitting device according to claim 1, it is characterized in that, when described switch element conducting make described luminescence unit begin luminous after, described switch element can continue to keep conducting by the electric current of described luminescence unit or the electric current of cross-pressure or light or the described switch element of flowing through.
18. light-emitting device according to claim 1 is characterized in that, also comprises:
At least one impedance component is electrically connected between the described electrical input of described the first electrical connection module, or between the described electrical input of described the second electrical connection module.
19. light-emitting device according to claim 18, it is characterized in that, when the quantity of described impedance component is two, one of them of described impedance component is electrically connected between the described electrical input of described the first electrical connection module, described impedance component wherein another is electrically connected between the described electrical input of described the second electrical connection module.
20. light-emitting device according to claim 18 is characterized in that, described impedance component is a resistance or an inductance or an electric capacity or a diode or at least one alternating-current light emitting diode or aforesaid combination.
21. light-emitting device according to claim 1 is characterized in that, the described electrical input of described the first electrical connection module and described the second electrical connection module matches with the lamp socket of a fluorescent tube respectively.
22. light-emitting device according to claim 1 is characterized in that, described the first electrical connection module and described the second electrical connection module lay respectively at relative two ends of described luminescence unit.
23. light-emitting device according to claim 1 is characterized in that, the preset state of described switch element is not conducting.
CN2011104084341A 2011-12-09 2011-12-09 Light-emitting device Pending CN103162102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011104084341A CN103162102A (en) 2011-12-09 2011-12-09 Light-emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011104084341A CN103162102A (en) 2011-12-09 2011-12-09 Light-emitting device

Publications (1)

Publication Number Publication Date
CN103162102A true CN103162102A (en) 2013-06-19

Family

ID=48585435

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011104084341A Pending CN103162102A (en) 2011-12-09 2011-12-09 Light-emitting device

Country Status (1)

Country Link
CN (1) CN103162102A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015013938A1 (en) * 2013-08-01 2015-02-05 Wen Xia Led light-emitting device
CN104595747A (en) * 2014-11-28 2015-05-06 宁波市柯玛士太阳能科技有限公司 LED lamp tube
CN105864732A (en) * 2015-02-10 2016-08-17 讯强电子(惠州)有限公司 Light-emitting diode lamp tube
CN106195722A (en) * 2015-05-05 2016-12-07 扬州艾笛森光电有限公司 The light emitting diode illuminating apparatus of alternating current power supply be can be used directly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080197786A1 (en) * 2007-02-19 2008-08-21 Marlex Engineering Inc. impedance controlled electronic lamp circuit
CN201909216U (en) * 2011-01-19 2011-07-27 佛山市国星光电股份有限公司 Light emitting diode (LED) fluorescent lamp tube
CN201944602U (en) * 2010-12-24 2011-08-24 上海亮硕光电子科技有限公司 Multi-functional lighting light-emitting diode (LED) fluorescent lamp
EP2381158A2 (en) * 2010-04-23 2011-10-26 Teknoware Oy LED tube and lamp arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080197786A1 (en) * 2007-02-19 2008-08-21 Marlex Engineering Inc. impedance controlled electronic lamp circuit
EP2381158A2 (en) * 2010-04-23 2011-10-26 Teknoware Oy LED tube and lamp arrangement
CN201944602U (en) * 2010-12-24 2011-08-24 上海亮硕光电子科技有限公司 Multi-functional lighting light-emitting diode (LED) fluorescent lamp
CN201909216U (en) * 2011-01-19 2011-07-27 佛山市国星光电股份有限公司 Light emitting diode (LED) fluorescent lamp tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015013938A1 (en) * 2013-08-01 2015-02-05 Wen Xia Led light-emitting device
CN104595747A (en) * 2014-11-28 2015-05-06 宁波市柯玛士太阳能科技有限公司 LED lamp tube
CN105864732A (en) * 2015-02-10 2016-08-17 讯强电子(惠州)有限公司 Light-emitting diode lamp tube
CN106195722A (en) * 2015-05-05 2016-12-07 扬州艾笛森光电有限公司 The light emitting diode illuminating apparatus of alternating current power supply be can be used directly

Similar Documents

Publication Publication Date Title
TWI458390B (en) Light emitting apparatus
JP5214585B2 (en) LED drive circuit, phase control dimmer, LED illumination lamp, LED illumination device, and LED illumination system
JP4943402B2 (en) LED drive circuit, LED illumination lamp, LED illumination device, and LED illumination system
CN102818141A (en) light emitting device
CN107666744A (en) LED touch stepless dimming color-temperature regulating driving power and its control method
CN109792819B (en) Modified light-emitting diode (LED) lamp tube for realizing step-by-step dimming in multi-lamp lighting system
US10667344B2 (en) Retrofit LED lamp
JP2011146263A (en) Light-emitting diode illumination device and light-emitting diode illumination system
CN104105274A (en) LED driving device, lighting device, and LED driving method
CN105792416A (en) Control circuit of switch light-dimming type LED lamp
CN103162102A (en) Light-emitting device
CN202340339U (en) LED (light-emitting diode) illumination power supply and drive control system
CN103167672B (en) Light-emitting diode (LED) illumination power supply and drive control system
CN113163541A (en) LED dimming control circuit and LED lamp
US10612731B2 (en) LED tube lamp
WO2013039366A2 (en) Power-saving led lighting
EP3033925A1 (en) Lighting system, including switch having 2 power levels
US9706625B2 (en) Anti-flicker apparatus for motion detector
JP2012160284A (en) Led lighting device, luminaire, and lighting control system
CN207443178U (en) LED touch stepless dimming color-temperature regulating driving power
CN201016445Y (en) Novel energy-saving long-life lamp
RU134383U1 (en) LED BRIGHTNESS CONTROL DEVICE
CN213186653U (en) Intelligent lighting system
US9301368B2 (en) Anti-flicker apparatus for motion detector
KR101139344B1 (en) Led drive circuit, led illumination fixture, led illumination device, and led illumination system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C05 Deemed withdrawal (patent law before 1993)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130619