CN102413604A - Led Lighter And Lighting Device Using The Led Lighter - Google Patents
Led Lighter And Lighting Device Using The Led Lighter Download PDFInfo
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- CN102413604A CN102413604A CN2011102142323A CN201110214232A CN102413604A CN 102413604 A CN102413604 A CN 102413604A CN 2011102142323 A CN2011102142323 A CN 2011102142323A CN 201110214232 A CN201110214232 A CN 201110214232A CN 102413604 A CN102413604 A CN 102413604A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to an LED lighter and a lighting device using the LED lighter. The invention relates to an LED lighter. Dimming control is realized according to the lighter time of an LED light. And under a condition that wire breaks in the LED light, the lighter time resets automatically. Thus, when the LED light is taken off, the lighter time is not reset. A time sequence control part (8) makes stop period time increase gradually. After a counting of two times of the stop period time, broken wire is determined to occur in the LED light (110). Therefore, the lighter time of a lighter time counting part (9) and a lighter time stored in a storage part (10) are reset to zero. Thus, when faults such as broken wires appear in the LED LIGHT (110), the lighter time of the LED light (110) is reset to zero, thereby avoiding the lighter time from resetting to zero when the LED light (110) is taken off.
Description
Technical field
The present invention relates to LED ignition device that LED (light-emitting diode) is lit a lamp and the ligthing paraphernalia that uses this LED ignition device.
Background technology
Light beam reduces known illuminating light source along with the process of the time of lighting a lamp (accumulative total light a lamp the time, below identical).For example, following control (initial illumination proofread and correct control) is disclosed in patent documentation 1: according to time of lighting a lamp of light source (fluorescent lamp) to dimming light sources, cut down unnecessary electric power thus.
On the other hand, as illuminating light source, use LED to replace fluorescent lamp gradually.For example, in patent documentation 2, the LED lamp that has with existing straight-pipe fluorescent lamp similar shape is disclosed.This LED light fixture has: on the installation base plate of band plate-like, a large amount of LED are installed and the light source region that constitutes; Light source region is accommodated in the glass tube of inner straight tube shape; Tube head with the closed at both ends of glass tube; And it is more outstanding and be used for terminal pin to the light source region power supply than the side of tube head.This LED lamp loading and unloading are installed on the lamp socket that is arranged at the dedicated illumination utensil freely,, light a lamp thus via lamp socket supply capability (direct current power) from the LED ignition device of lift-launch on this ligthing paraphernalia.
In addition, as the existing example of LED ignition device, the device of record in the patent documentation 3 is arranged.In the existing example of patent documentation 3; Carry out following control (constant current control): detect the electric current (output current) that imposes on the voltage (output voltage) of LED lamp (lamp socket) and flow through the LED lamp; The adjustment output voltage is so that output current and desired value (for example, the rated current of LED lamp) unanimity.
Technical literature formerly:
Patent documentation 1: No. 3809747 communique of japanese
Patent documentation 2: TOHKEMY 2009-43447 communique
Patent documentation 3: TOHKEMY 2006-210271 communique
But there is following problem: proofreading and correct control the time of lighting a lamp of light source is being carried out timing, and according under the situation of the time of lighting a lamp to dimming light sources, welcoming end of lifetime and when being replaced, the resetting of the time of how lighting a lamp at light source for initial illumination.For example, under with the situation of fluorescent lamp,, utilize the emitter (emitter) be coated on the filament to consume and electrical characteristics this characteristic that changes, the resetting of the time of automatically lighting a lamp at the end of lifetime of fluorescent lamp as light source.On the other hand; Proofread and correct under the situation of control the LED lamp being carried out initial illumination, for example, the power consumption moment when fault such as broken string takes place in the LED lamp in the LED lamp is zero; Thus; The voltage of supplying with to the LED lamp from the LED ignition device rises to the voltage higher than steady state voltage, therefore, can rise and automatically the time of lighting a lamp is resetted through detecting this voltage.
But, put down in writing that works from the LED lamp of ligthing paraphernalia loading and unloading at patent documentation 2, even under the state of LED ignition device action, directly take off under the situation of LED lamp, also produce same high voltage from lamp socket.Therefore, if the user to wait and takes off the LED lamp from lamp socket in order to clean, then the time of lighting a lamp may reset by error, can not correctly carry out and the corresponding brightness adjustment control of time of lighting a lamp.
In addition, after taking off the LED lamp, once more the LED lamp is installed to lamp socket sometimes from lamp socket.Under this situation, as stated, as above-mentioned, supply with and rise to the voltage higher than steady state voltage for the voltage of LED lamp, after just the LED lamp being installed once more, the super-high-current (impulse current) that possibly have overrate flows through the LED lamp.And when flowing through such super-high-current, the light-emitting diode of LED lamp possibly break down.
In the existing example of patent documentation 3 records; Under the situation of taking off the LED lamp; Setting makes from the service voltage of LED ignition device becomes the standby mode of the voltage lower than steady state voltage, the stop mode that perhaps the LED ignition device is stopped, and avoids above-mentioned impulse current thus.But after just taking off the LED lamp, service voltage does not fully reduce as yet, therefore if moment connects the LED lamp, then may flow through impulse current.
Summary of the invention
The present invention accomplishes in view of above problem, and its purpose is, carries out brightness adjustment control according to the time of lighting a lamp of LED lamp, and, take place in the LED lamp that the time of lighting a lamp automatically resets under the situation of broken string, so when taking off the LED lamp time of lighting a lamp do not reset.
LED ignition device of the present invention is characterized in that, this LED ignition device possesses: power conversions portion, and output voltage is variable; Current detecting part detects the output current of supplying with to the LED lamp via lamp socket from this power conversions portion; The output voltage detection unit detects the said output voltage that imposes on the LED lamp via said lamp socket, and judges whether be the operation voltage of lighting a lamp normally; Output control part is controlled said power conversions portion and is increased and decreased said output voltage, so that the output current that is detected by said current detecting part is consistent with desired value; Connect detection unit, judge said lamp socket and said LED lamp be connected have or not; Sequential (sequence) control part, decision are forbidden during said output voltage detection unit and the said acts of determination that is connected detection unit, and are set the desired value of said output current; The time timing portion of lighting a lamp carries out timing to the time of lighting a lamp of said LED lamp; And storage part, storage is by said the lighting a lamp the time of this time timing portion timing of lighting a lamp; In the result of determination of said connection detection unit is under the connectionless situation and the result of determination of said output voltage detection unit is under the situation of abnormal voltage; Said output control part stops said power conversions portion; Said output voltage is limited in below the lower limit of regulation; Said SECO portion sets the desired value of said output current according to said the lighting a lamp the time by the said time timing portion timing of lighting a lamp, under the result of determination of said output voltage detection unit is unusual situation; After the stopping period that said power conversions portion is stopped to have passed through the stipulated time; Control beginning from said power conversions portion arriving stipulated number to LED lamp supplying electric current if become the number of times of said stopping period once more, then said time timing portion and the said storage part of lighting a lamp resets to initial value with the said time of lighting a lamp.
In this LED ignition device, preferably possess: constant pressure source applies constant voltage via said lamp socket; And detection resistance, be connected in parallel via said lamp socket and the resistance that in said LED lamp, is connected in parallel in light-emitting diode; Said connection detection unit has been judged to be connection during less than the threshold value of regulation in the voltage drop of said detection resistance; Be judged to be during more than or equal to said threshold value not have in said voltage drop and connect; At least from said power conversions portion during said LED lamp supplying electric current, stop acts of determination.
In this LED ignition device; Preferred said SECO portion has timer; According to decide by the time of this timer timing forbid said output voltage detection unit and the said acts of determination that is connected detection unit during; And under the result of determination of said output voltage detection unit was unusual situation, decision stopped the stopping period of said power conversions portion.
Ligthing paraphernalia of the present invention is characterized in that, this ligthing paraphernalia possesses: above-mentioned each the described LED ignition device of the present invention, said lamp socket and the appliance body that keeps said LED ignition device and said lamp socket.
LED ignition device of the present invention and ligthing paraphernalia have following effect: the time of lighting a lamp according to the LED lamp is carried out brightness adjustment control; And in the LED lamp, produce under the situation of broken string; The time of lighting a lamp is automatically reset, and then when taking off the LED lamp, resetted the time of lighting a lamp.
Description of drawings
Fig. 1 is the circuit block diagram that the execution mode of LED ignition device of the present invention is shown.
Fig. 2 illustrates the time of lighting a lamp of LED ignition device of the present invention and the figure of the relation between the target current value.
Fig. 3 is the time diagram that is used to explain action of LED ignition device of the present invention.
The time diagram that is used to explain action when Fig. 4 is the LED lamp failure of LED ignition device of the present invention.
Fig. 5 is the stereogram that the execution mode of ligthing paraphernalia of the present invention is shown.
Label declaration
2, power conversions portion; 3, current detecting part; 4, output voltage detection unit; 5, output control part; 6, connect detection unit; 8, SECO portion; 9, the time timing portion of lighting a lamp; 10, storage part; 110, LED lamp; 120, lamp socket
Embodiment
Below, the execution mode that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the circuit block diagram that the execution mode of LED ignition device of the present invention is shown.The LED lamp 110 of being lit a lamp by the LED ignition device of this execution mode has structure like the LED lamp & lantern with patent documentation 1 record.That is, this LED lamp 110 has: the glass tube (with reference to Fig. 5) of the series circuit of a large amount of light-emitting diodes 111, the resistance R 110 that is connected in parallel with this series circuit, straight tube shape and with the tube head (not shown) of the closed at both ends of glass tube.In addition, on tube head, give prominence to and be provided with pair of terminal pin (not shown), this pair of terminal pin is connected via the output of lamp socket 120 with the LED ignition device.And, supply with direct current (output current Io) via the terminal pin to light-emitting diode 111 from lamp socket 120.In addition; Owing between the series circuit of lamp socket 120 and light-emitting diode 111, be connected with rectifier DB1; Therefore to not restriction of the combination between supporting plate A1, A2 and the terminal pin of lamp socket 120; No matter connect, all supply with output current Io forward to the series circuit of light-emitting diode 111 with which kind of combination.
The LED ignition device of this execution mode has boost chopper portion 1, power conversions portion 2, current detecting part 3, output voltage detection unit 4, output control part 5, connects detection unit 6, constant pressure source 7, SECO portion 8, light a lamp time timing portion 9 and storage part 10 etc.
Boost chopper portion 1 will be from the AC mains source 100 alternating voltages supplied with convert desirable direct voltage to and improve power factor (PF).Here, if the output voltage of boost chopper portion 1 is set at 400 volts strong, then supply voltage value can be corresponding to the AC mains source 100 from 100 volts to 242 volts wide region.
Output voltage detection unit 4 possesses: be connected the divider resistance R1 at (between the two ends of capacitor C1) between the output of power conversions portion 2, the series circuit of R2, and comparator C P101.Outputed to SECO portion 8 by detection voltage after divider resistance R1, the R2 dividing potential drop (voltage that is directly proportional with the output voltage V o of power conversions portion 2) and the output voltage of comparator C P101.Relatively,, then be judged to be unusual if detect voltage greater than threshold value Vref3 by the threshold value Vref3 of the detection voltage after divider resistance R1, the R2 dividing potential drop with the minus side input that is input to comparator C P101.In addition; The output (result of determination of output voltage detection unit 4) of comparator C P101 is input to SECO portion 8; According to the output of SECO portion 8, output control part 5 is made as action or is failure to actuate, power conversions portion 2 and boost chopper portion 1 are made as action or are failure to actuate.
SECO portion 8 is made up of microcontroller (being designated hereinafter simply as micro-control), carries out in advance by timing action, the acts of determination of program setting, is stored in the storage etc. of the state of reading, setting of the data in the memory.Here, the time of lighting a lamp of LED lamp 110 is by time timing portion 9 timing of lighting a lamp, and is written into storage part 10 at any time.And SECO portion 8 lights a lamp the time according to the LED lamp of reading from storage part 10, and is as shown in Figure 2, sets the target current value of LED lamp 110.That is, the target current value of LED lamp 110 is set at and the process of the time of lighting a lamp increases in direct ratioly.
Current detecting part 3 constitutes by detecting resistance R 3, and this detection resistance R 3 is inserted between the negative side (A2) of output and lamp socket 120 of negative potential side of power conversions portion 2.And the voltage drop of the detection resistance R 3 that output current Io is caused outputs to output control part 5 as detecting voltage from current detecting part 3.
Output control part 5 has: the drive circuit 50 that the switch element Q1 of power conversions portion 2 is driven; Be used for drive circuit 50 is carried out the feedback circuit 51 of FEEDBACK CONTROL; And the control circuit of chopping 52 that boost chopper portion 1 is controlled etc.In this output control part 5, power conversions portion 2 controlled increase and decrease output voltage V o, so that consistent with the target current value by current detecting part 3 detected output current Io.Under the situation that feedback circuit 51 is made up of the integrating circuit based on operational amplifier OP100; In advance with the storage of the load current value of LED lamp 110 in the memory of SECO portion 8; To the data of reading from this memory with compare computing by current detecting part 3 detected detection voltages; The duty of adjustment switch element Q1 recently increases and decreases output voltage V o, so that it is consistent with target current value in being stored in memory to detect voltage.That is, output control part 5 makes constant electric current (rated current) flow through the constant current control of LED lamp 110.
Here, the rated voltage of LED lamp 110 becomes the value that on the forward voltage Vf of the light-emitting diode 111 that uses, multiply by the number n of this light-emitting diode 111 and obtain (=Vf * n).For example, voltage Vf is 3.5 volts if establish forward, and the number of light-emitting diode 111 is 20, and then 3.5 * 20=70 volt is a rated voltage; If establishing the number of light-emitting diode 111 is 10, then 3.5 * 10=35 volt is a rated voltage.Carry out constant current control through output control part 5, can be by a plurality of LED lamps that same LED ignition device is constant to rated current and rated voltage is different, for example have at least from the LED lamp of 35 volts to 70 volts rated voltage and light a lamp.
Supply with the control power supply from control power supply unit 130 to output control part 5.In order to generate the drive signal of supplying with the switch element Q1 that gives power conversions portion 2, via diode D101 capacitor C101 is charged from control power supply unit 130.But control power supply unit 130 can be made up of existing known circuit, the diagram and the explanation of therefore omitting detailed structure.
Constant pressure source 7 is made up of resistance R 4 and Zener diode 70; One end of this resistance R 4 is connected with the output of the hot side of boost chopper portion 1; The negative electrode of this Zener diode 70 is connected with the other end of resistance R 4, and anode is connected with the low potential side (A2) of lamp socket 120.And the constant voltage (Zener voltage Vz) that produces at the two ends of Zener diode 70 (between the negative electrode anode) is applied to and connects detection unit 6, and is applied to lamp socket 120 via resistance R 5.In addition, need and to be made as the voltage lower from the constant voltage (Zener voltage Vz) that constant pressure source 7 applies than the rated voltage of LED lamp 110.And in order to use the different multiple LED lamp of rated voltage, the LED lamp that rated voltage is minimum is set constant voltage (Zener voltage Vz) with the mode that is lower than this rated voltage and is got final product as benchmark.
And, surpass under the situation of dangerous voltage above dangerous voltage and by resistance R 5, R6, R7 voltage after partial in the rated voltage of LED lamp 110, must be made as the voltage lower from the constant voltage (Zener voltage Vz) that constant pressure source 7 applies than dangerous voltage.In addition, the magnitude of voltage of dangerous voltage on business is total to standard and how many differences, but usually for direct current, is made as the voltage above 50 volts.
Connecting detection unit 6 possesses: the series circuit of three resistance R 5, R6, R7 is connected between the low potential side (A2) of negative electrode and lamp socket 120 of Zener diode 70; And comparator C P100, voltage drop and threshold voltage Vref1 that comparison resistance (detection resistance) R7 is last.In addition, the tie point of two resistance R 5, R6 is connected with the hot side of lamp socket 120.When on lamp socket 120, not connecting the state (no-load condition) of LED lamp 110, carry out voltage after partial (voltage drop on the resistance R 7) by three resistance R 5, R6, R7 zener voltage Vz to the plus end input of comparator C P100.On the other hand, when on lamp socket 120, being connected with the state (load condition is arranged) of LED lamp 110, the resistance R 110 of LED lamp 110 and two resistance R 6, R7 are connected in parallel.Voltage drop on the resistance R 7 when thus, load condition being arranged is also low during than no-load condition.Between the voltage drop on the resistance R 7 when the threshold voltage Vref1 of the negative terminal that is input to comparator C P100 being set at voltage drop and the no-load condition on the resistance R 7 when load condition is arranged here.Therefore, when no-load condition, comparator C P100 is output as high level, and when load condition was arranged, comparator C P100 was output as low level.In addition; The output of comparator C P100 (result of determination that connects detection unit 6) is imported into SECO portion 8; According to the output of SECO portion 8, output control part 5 is made as action or is failure to actuate, power conversions portion 2 and boost chopper portion 1 are made as action or are failure to actuate.
Next, specify the action of the LED ignition device of this execution mode with reference to the time diagram of Fig. 3.At first, not shown mains switch is dropped at moment t0, and beginning is supplied with from the power supply in AC mains source 100.Boost chopper portion 1 begins the output voltage of the boost chopper portion 1 of (from moment t0 to t1) before the action, shown in Fig. 3 (g), become supply voltage to AC mains source 100 carry out full-wave rectification and level and smooth after the voltage that obtains.This moment constant pressure source 7 output voltage; Shown in Fig. 3 (a); Become the constant voltage of being confirmed by Zener voltage Vz, be connected under the situation on the lamp socket 120 at LED lamp 110, the positive side input voltage that constitutes the comparator C P100 that connects detection unit 6 becomes the voltage lower than threshold value Vref1.The connectionless result of determination that has connecting detection unit 6 is imported into SECO portion 8.
SECO portion 8 has clocking capability, output control part 5 is made as till the t1 constantly and is failure to actuate.In addition; The result of determination that connects detection unit 6 till the t1 constantly is to be judged as under the situation of connection; SECO portion 8 output action signals and the action of output control part 5 is begun, and forbid that the later connection of t1 constantly judges, in the result of determination that connects detection unit 6 for being judged as under the connectionless situation; SECO portion 8 stops clocking capability, keeps the state of t0 constantly all the time.
After moment t1, if from SECO portion 8 output action signals, then the control circuit of chopping 52 of output control part 5 and drive circuit 50 shown in Fig. 3 (e), Fig. 3 (f), begin the output of drive signal respectively.In addition, control circuit of chopping 52 is existing known, carries out following control (PWM control): detect the output voltage of boost chopper portion 1 and be entered into error amplifier, confirm the conduction period of switch element according to the output signal of error amplifier.In addition; Drive circuit 50 for example has the constant voltage pooling feature; Can constitute: increase this situation corresponding to the electric current that flows through resistance R 109, shorten the conduction period of switch element Q1, said resistance R 109 is connected between the lead-out terminal Pls and ground wire of this constant voltage pooling feature.
And the output of the operational amplifier OP100 of feedback circuit 51 is connected with the output Pls of drive circuit 50 via the series circuit of resistance R 100 and diode D102.Therefore; Under the lower situation of the detection voltage of current detecting part 3 inputs; The output voltage of operational amplifier OP100 reduces, and increases from the bleed magnitude of current of (sink) operational amplifier OP100 of output Pls, under the detection voltage condition with higher of current detecting part 3 inputs; The output voltage of operational amplifier OP100 rises, and reduces from the bleed magnitude of current of operational amplifier OP100 of output Pls.Thus, can adjust the duty ratio of switch element Q1, so that it is consistent with the load current value (target current value) in the memory that is stored in SECO portion 8 to detect voltage.Shown in Fig. 3 (d); Be stored in the memory of SECO portion 8 the target current value moment t1 be than with the suitable low magnitude of voltage of magnitude of voltage of target current value that is used to be made as the regulation light beam; After the moment t2 that confirms by the clocking capability of SECO portion 8, be altered to the magnitude of voltage suitable with the target current value.The reason of carrying out this control is that the output voltage of the bigger then boost chopper of output voltage portion 1 rises more lentamente, till arriving assigned voltage, needs the long time; Therefore; As this execution mode, begin at the same time under the situation of action of boost chopper portion 1 and power conversions portion 2, hope to make power conversions portion 2 after just begin to move to supply with and give the electric power of LED lamp 110 minimum; The output voltage of boost chopper portion 1 sharply rises, and arrives desired voltage thus at short notice.
To t2, shown in Fig. 3 (g), the output voltage of boost chopper portion 1 rises at moment t1.At this moment; Corresponding to output end voltage (with reference to Fig. 3 (h)) this situation that rises of power conversions portion 2, positive side input voltage (with reference to Fig. 3 (b)) and the positive side input voltage that constitutes the comparator C P101 of output voltage detection unit 4 that constitute to connect the comparator C P100 of detection unit 6 also rise (with reference to Fig. 3 (c)).Here, as stated, judge,, also can not produce misinterpretation even therefore the positive side input voltage of comparator C P100 is bigger than threshold value Vref1 because SECO portion 8 forbids the later connection of t1 constantly.
Here, when at moment t3 when lamp socket 120 takes off LED lamp 110, the electric current I o that flows through LED lamp 110 becomes zero shown in Fig. 3 (i), the output end voltage of power conversions portion 2 (with reference to Fig. 3 (h)) begins to rise.If the detection voltage of being confirmed by the voltage ratio of resistance R 1, R2 surpasses threshold value Vref3 at moment t4, then be judged to be and produced load abnormal (non-loaded), export stop signals from comparator C P101 to SECO portion 8.SECO portion 8 is according to the output of stop signal change actuating signal, and to stop the action of output control part 5, boost chopper portion 1 and power conversions portion 2 stop action.But, after having exported the moment t4 of stop signal, forbid the abnormality juding of output voltage detection unit 4.
If power conversions portion 2 stops action; Then shown in Fig. 3 (h); The output voltage V o of power conversions portion 2 reduces, but in the time till the capacitor C1 discharge of power conversions portion 2, keeps the connection judgement of being undertaken by connection detection unit 6 and forbid; If passed through the time of confirming by the clocking capability of SECO portion 8 (time), then restart by connecting the connection judgement that detection unit 6 carries out from moment t4 to moment t5.At this time point, the clocking capability of SECO portion 8 resets and returns initial condition.
Here, when no-load condition, exported under the voltage condition more than the rated voltage of LED lamp 110, after LED lamp 110 just has been connected to lamp socket 120, may flow through the super-high-current of overrate from power conversions portion 2.But; In the LED of this execution mode ignition device; To having or not till 110 of the connection that connects detection unit 6 judgement LED lamps, output control part 5 stops the action of power conversions portion 2, has been judged to be connection (load condition is arranged) afterwards at connection detection unit 6; Therefore the action of output control part 5 beginning power conversions portions 2 can not apply the voltage more than the rated voltage to LED lamp 110.As a result, suppressed LED lamp 110 is being installed to the impulse current that 120 last times of lamp socket flow through, therefore can prevent the fault of LED lamp 110.
And, stopped in that LED lamp 110 is taken off from lamp socket 120 power conversions portion 2 tight after, in lamp socket 120, produce high voltage.But, if the resistance value of resistance R 5 is set at smaller value, then can come to make sharp voltage to reduce through flowing through electric current via resistance R 5 and Zener diode 70, therefore can further suppress impulse current.
Next, produce the situation of fault with reference to time diagram explanation LED lamp 110 under the state of power conversions portion 2 actions of Fig. 4.When in LED lamp 110, producing fault such as broken string, and, lamp socket 120 comes down to identical situation when taking off LED lamp 110.Therefore, when moment t6 produced broken string in LED lamp 110, the electric current that flows through LED lamp 110 was zero, and the output end voltage of power conversions portion 2 begins to rise.Shown in Fig. 4 (c), when the detection voltage of confirming by the voltage ratio of resistance R 1, R2 when moment t7 surpasses threshold value Vref3, output voltage detection unit 4 is judged to be and has produced load abnormal and to SECO portion 8 output stop signals.Thereby SECO portion 8 stops the action of boost chopper portion 1 and power conversions portion 2 according to the output of stop signal change actuating signal, stopping the action of output control part 5, and then forbids the later abnormality juding of t7 constantly.
Shown in Fig. 3 (h); If power conversions portion 2 stops action; Then the output voltage V o of power conversions portion 2 reduces, but the time till the capacitor C1 of power conversions portion 2 discharge keeps the connection judgement of being undertaken by connection detection unit 6 and forbids; If passed through the time of confirming by the clocking capability of SECO portion 8 (time), then restart by connecting the connection judgement that detection unit 6 carries out from moment t7 to moment t8.Here, constantly equate during t7～t8 and the moment t4～t5 shown in Figure 3.
When in LED lamp 110, producing fault such as broken string, shown in Fig. 4 (b), the positive side input voltage of comparator C P100 becomes at moment t8 time point and is lower than threshold value Vref1, so is judged to be the state that is keeping being connected with LED lamp 110.At this moment, the action that SECO portion 8 keeps power conversions portion 2 stops, up to the time (the stopping period T2 of t8～t9 constantly) through being confirmed by clocking capability.And SECO portion 8 makes the stopping period number of times increase progressively (increment) at the time point of moment t9, and the output action signal is to restart the action of output control part 5.According to this actuating signal, the control circuit of chopping 52 of output control part 5 and drive circuit 50 output of beginning drive signal shown in Fig. 4 (e), Fig. 4 (f) respectively.So the output end voltage of power conversions portion 2 begins to rise once more, shown in Fig. 4 (c), the detection voltage of being confirmed by the voltage ratio of resistance R 1, R2 surpasses threshold value Vref3 at moment t10.At this moment, output voltage detection unit 4 is judged to be and has produced load abnormal, to SECO portion 8 output stop signals.The later action of the later action of t10 constantly and above-mentioned moment t7 is identical; At moment t11; Connect detection unit 6 and restart to connect judgement once more; Keep the action that stops power conversions portion 2, up to having passed through the time of confirming by the clocking capability of SECO portion 8 (the stopping period T2 of t11～t12 constantly).Time point at moment t12; SECO portion 8 increases progressively the stopping period number of times; Through carrying out the counting of twice stopping period number of times, in LED lamp 110, produced broken string and be judged as, reset to zero by time of lighting a lamp of time timing portion 9 timing of lighting a lamp and the time of lighting a lamp that is stored in the storage part 10.
Thus, when in LED lamp 110, having produced fault such as broken string, the time of lighting a lamp of LED lamp 110 automatically resets zero, can prevent that the time of lighting a lamp resets to zero situation when taking off LED lamp 110.In addition, in this execution mode, when stopping period had been accomplished twice, the time of lighting a lamp automatically reset, but the number of times of the stopping period that resets of the time of lighting a lamp also can be the arbitrary number of times more than 3 times.In addition, the LED ignition device of this execution mode is lit a lamp to a LED lamp 110, and a plurality of LED lamps 110 that are connected in series are lit a lamp simultaneously.And, also can constitute comparator CP101 and SECO portion 8 by a micro-control.
In addition, the LED ignition device of this execution mode for example carries on ligthing paraphernalia shown in Figure 5.This ligthing paraphernalia has: the appliance body 130 that vertically is attached to ceiling; And be arranged on a pair of lamp socket 120,120 on the appliance body 130.It is trapezoidal lengthwise angle tubular that appliance body 130 forms the side view of observing from length direction, and the LED ignition device has been taken in its inside.Length direction both ends at the lower surface of appliance body 130 are equipped with lamp socket 120,120 respectively.This lamp socket 120,120 has identical structure with the fluorescence that has known straight tube shape now with lamp socket.
Here, supply with under the situation of direct current, when by error fluorescent lamp being installed, may supply with direct current to filament portion at any one LED lamp 110 from two lamp sockets 120,120.But; If for example power conversions portion 2 stops when being judged as output voltage V o less than setting (＜rated voltage) by output voltage detection unit 4; Even then be installed in by error under the situation on the lamp socket 120 at fluorescent lamp, the fault of unsafe phenomenon and LED ignition device etc. can not take place yet.
Here; Even fluorescent lamp is installed in lamp socket 120 by error; Therefore on 120, whether safe the user also can't distinguish, and can the electrode shape of the tube head of LED lamp 110 be made as the shape different with fluorescent lamp to prevent wrong the installation; Also can the structure of lamp socket 120,120 be made as the structure that the electrode shape with the tube head of LED lamp 110 coincide.
Claims (4)
1. LED ignition device is characterized in that possessing:
Power conversions portion, output voltage is variable;
Current detecting part detects the output current of supplying with to the LED lamp via lamp socket from this power conversions portion;
The output voltage detection unit detects the said output voltage that imposes on the LED lamp via said lamp socket, and judges whether be the operation voltage of lighting a lamp normally;
Output control part is controlled said power conversions portion and is increased and decreased said output voltage, so that the output current that is detected by said current detecting part is consistent with desired value;
Connect detection unit, judge said lamp socket and said LED lamp be connected have or not;
SECO portion, decision is forbidden during said output voltage detection unit and the said acts of determination that is connected detection unit, and is set the desired value of said output current;
The time timing portion of lighting a lamp carries out timing to the time of lighting a lamp of said LED lamp; And
Storage part, storage is by said the lighting a lamp the time of this time timing portion timing of lighting a lamp;
In the result of determination of said connection detection unit is under the connectionless situation and the result of determination of said output voltage detection unit is under the situation of abnormal voltage; Said output control part stops said power conversions portion; Said output voltage is limited in below the lower limit of regulation
Said SECO portion is according to said the lighting a lamp the time by the said time timing portion timing of lighting a lamp; Set the desired value of said output current; Under the result of determination of said output voltage detection unit is unusual situation; After the stopping period that said power conversions portion is stopped to have passed through the stipulated time, control to begin once more from said power conversions portion to LED lamp supplying electric current
If the number of times that becomes said stopping period reaches stipulated number, then said time timing portion and the said storage part of lighting a lamp resets to initial value with the said time of lighting a lamp.
2. LED ignition device according to claim 1 is characterized in that,
This LED ignition device possesses:
Constant pressure source applies constant voltage via said lamp socket; And
Detect resistance, be connected in parallel via said lamp socket and the resistance that in said LED lamp, is connected in parallel in light-emitting diode;
Said connection detection unit has been judged to be connection during less than the threshold value of regulation in the voltage drop of said detection resistance; Be judged to be during more than or equal to said threshold value not have in said voltage drop and connect; At least from said power conversions portion during said LED lamp supplying electric current, stop acts of determination.
3. LED ignition device according to claim 1 and 2 is characterized in that,
Said SECO portion has timer; According to decide by the time of this timer timing forbid said output voltage detection unit and the said acts of determination that is connected detection unit during; And under the result of determination of said output voltage detection unit was unusual situation, decision stopped the stopping period of said power conversions portion.
4. ligthing paraphernalia is characterized in that possessing:
Like each described LED ignition device, said lamp socket in the claim 1～3 and the appliance body that keeps said LED ignition device and said lamp socket.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP199327/2010 | 2010-09-06 | ||
| JP2010199327A JP5645250B2 (en) | 2010-09-06 | 2010-09-06 | LED lighting device and lighting apparatus using the same |
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| CN102413604A true CN102413604A (en) | 2012-04-11 |
| CN102413604B CN102413604B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110214232.3A Active CN102413604B (en) | 2010-09-06 | 2011-07-25 | Led lighter and lighting device using the led lighter |
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| JP7145464B2 (en) * | 2018-11-01 | 2022-10-03 | パナソニックＩｐマネジメント株式会社 | Lighting device, lighting device and emergency lighting system |
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Also Published As
| Publication number | Publication date |
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| CN102413604B (en) | 2014-03-19 |
| JP5645250B2 (en) | 2014-12-24 |
| JP2012059423A (en) | 2012-03-22 |
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