WO2005003624A1 - Led bulb having electric conversion power supply - Google Patents

Led bulb having electric conversion power supply Download PDF

Info

Publication number
WO2005003624A1
WO2005003624A1 PCT/KR2004/001607 KR2004001607W WO2005003624A1 WO 2005003624 A1 WO2005003624 A1 WO 2005003624A1 KR 2004001607 W KR2004001607 W KR 2004001607W WO 2005003624 A1 WO2005003624 A1 WO 2005003624A1
Authority
WO
WIPO (PCT)
Prior art keywords
bulb
leds
led
socket
electric
Prior art date
Application number
PCT/KR2004/001607
Other languages
French (fr)
Inventor
Mal-Sook Lee
Original Assignee
Mal-Sook Lee
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 Mal-Sook Lee filed Critical Mal-Sook Lee
Publication of WO2005003624A1 publication Critical patent/WO2005003624A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/233—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/50—Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light emitting diode (LED) bulb having an electric conversion power supply, and more particularly to an LED bulb which can be inserted into an existing electric power socket and includes an electric power socket base through which stable electric power can be supplied, in which light can be illuminated in many directions.
  • LED light emitting diode
  • an electric bulb which is used for indoor illumination is a filament type bulb which is heated to a high temperature to then radiate light when electric current flows in the bulb. Since the existing filament type bulb is heated to a high temperature to thus radiate light, power consumption of the bulb increases and lifetime thereof is shortened. Meanwhile, a light emitting diode (LED) converts excessive energy into light and radiates the light when injected electrons and holes are combined with each other. A diode using GaAsP emits red light, and a diode using GaP emits green light . The LED operates at low voltage and consumes a small amount of power. However, although such an LED has various kinds of merits, it has not been developed into a socket type electric bulb or a filament type electricbulb.
  • the above-described prior art has limitations for volume occupied by a voltage transformer or various types of stabilizers and size of components according to a current capacity. These limited devices are AC-DC converters, switching mode power supplies, general power supplies and so on.
  • a power supply having no voltage transformer may be used for an LED bulb.
  • a counter-measurement for a ripple of current, and an abrupt change of current and voltage for variation of loads is insufficient. Accordingly, the power supply having no voltage transformer is used only as an experimental power supply .
  • the LED bulb does not guarantee a capacity, stability and size so as to be fitted into the socket base of a general electric bulb.
  • LED light emitting diode
  • a light emitting diode (LED) bulb comprising: a socket base which can be inserted into an existing bulb socket and which activates a plurality of LEDs for illumination when electric power is supplied to the socket; a substrate on the upper portion of which the plurality of LEDs are installed and on the lower portion of which an electric conversion power supply is installed; a flexible tube with which each LED lead is covered in a manner that each of the plurality of LEDs can be bent flexibly at will in multiple directions; and an electric bulb main body on which the substrate is mounted and whose lower portion is inserted and fixed in the socket base.
  • the LED bulb according to the present invention can be inserted into the existing electric bulb socket irrespective of size of the LEDs and illuminate light from the LEDs in multiple directions .
  • FIG. 1 is a circuit diagram of a light emitting diode (LED) bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket
  • FIG. 2 is a front view showing an LED bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket
  • FIG. 3 is a perspective view showing a state where LEDs of FIG. 2 have been bent in many directions
  • FIG. 4 is a perspective view showing an LED bulb having an electric conversion power supply according to another embodiment of the present invention, in which the LED bulb can be inserted into an existing electric power socket and a reflective cap which can reflect light illuminated from LEDs .
  • FIG. 1 is a circuit diagram of a light emitting diode (LED) bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket.
  • the LED electric bulb includes capacitors Cl and C2, a diode bridge Dl, a Zener diode D8, LEDs D2-D7 and D9-D20, and resistors Rl, R2 and R3.
  • an applied alternating-current (AC) power voltage of 220V passes through a resistor Rl and is supplied to a smoothing circuit which is connected in series with the resistor Rl.
  • the smoothing circuit includes a resistor R2 and a capacitor Cl which are connected in parallel with each other.
  • a considerable amount of current is attenuated through the resistor R2 and the capacitor Cl .
  • the current whose considerable amount has been attenuated passes through a diode bridge Dl which plays a role of a rectifier and rectifies an AC current into a direct-current (DC) current.
  • DC direct-current
  • the smoothing circuit and the diode bridge are connected in series with each other.
  • the DC current output from the diode bridge Dl is maintained as a constant voltage of DC 48V by a Zener diode D8.
  • the constant voltage is smoothened by a electrolytic capacitor C2 which stabilizes the DC voltage.
  • the number of Zener diodes can be changed appropriately according to the number of LEDs .
  • the power supply voltage passes through a resistor R3 to then be applied to LEDs D2-D7 and D9-D20, and to thus activate the LEDs. Meanwhile, since LEDs operate at different operating voltages according to color of each of the LEDs, the number of the LEDs can vary.
  • FIG. 2 is a front view showing an LED bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket.
  • the LED electric bulb includes a socket base 1, a substrate 2, a flexible tube 4, LEDs 5 and an electric bulb main body 6. As shown in FIG.
  • the socket base 1 has a conventional shape, and is inserted into a socket (not shown) .
  • a power voltage is supplied to the LEDs 5 from an electric power supply (not shown)
  • the LEDs 5 are activated for illumination.
  • a number of LEDs 5 are installed on the externally exposed upper portion of the substrate 2.
  • the above-described electric conversion power supply (not shown) is installed on the lower portion of the substrate 2, in which the lower portion of the substrate 2 is sealed in the electric bulb main body 6.
  • the leads of each LED are covered with a flexible tube 4 so that the LEDs 5 can be flexibly bent at will. As described above, since the leads of each LED are covered with the flexible tube 4, the LEDs 5 can be directed to many directions as shown in FIG. 3.
  • FIG. 4 is a perspective view showing an LED bulb having an electric conversion power supply according to another embodiment of the present invention, in which the LED bulb can be inserted into an existing electric power socket and a reflective cap which can reflect light illuminated from LEDs .
  • the configuration of FIG. 4 is almost same as that of FIG. 2.
  • the configuration of FIG. 4 differs from that of FIG. 2, in that a reflective cap 3 surrounds an electric conversion power supply, a substrate 2 and LEDs 5.
  • the function and effect of the FIG. 4 LED electric bulb is substantially same as those of the FIG. 2 LED electric bulb.
  • a light emitting efficiency of an LED bulb having an electric conversion power supply according to the present invention is higher than that of the existing electric bulb. Also, power consumption of the present invention is smaller than the existing electric bulb. Also, the present invention can reduce a maintenance cost because of long lifetime due to compactness and light weight. Also, the electric bulb canbe fitted into the existing electric bulb socket, and illuminate light in user's desired directions.

Abstract

A light emitting diode (LED) bulb includes a socket base which can be inserted into an existing bulb socket and which activates a plurality of LEDs for illumination when electric power is supplied to the socket; a substrate on the upper portion of which the plurality of LEDs are installed and on the lower portion of which an electric conversion power supply is installed; a flexible tube with which each LED lead is covered in a manner that each of the plurality of LEDs can be bent flexibly at will in multiple directions; and an electric bulb main body on which the substrate is mounted and whose lower portion is inserted and fixed in the socket base. Thus, the LED bulb can be inserted into an existing electric power socket, a stable electric power voltage can be applied for the LEDs, and light can be illuminated in many directions.

Description

LED BULB HAVING ELECTRIC CONVERSION POWER SUPPLY
Technical Field The present invention relates to a light emitting diode (LED) bulb having an electric conversion power supply, and more particularly to an LED bulb which can be inserted into an existing electric power socket and includes an electric power socket base through which stable electric power can be supplied, in which light can be illuminated in many directions.
Background Art In general, an electric bulb which is used for indoor illumination is a filament type bulb which is heated to a high temperature to then radiate light when electric current flows in the bulb. Since the existing filament type bulb is heated to a high temperature to thus radiate light, power consumption of the bulb increases and lifetime thereof is shortened. Meanwhile, a light emitting diode (LED) converts excessive energy into light and radiates the light when injected electrons and holes are combined with each other. A diode using GaAsP emits red light, and a diode using GaP emits green light . The LED operates at low voltage and consumes a small amount of power. However, although such an LED has various kinds of merits, it has not been developed into a socket type electric bulb or a filament type electricbulb. Inparticular, it appears that a socket type electric bulb using LEDs which receives a generally commercialized power voltage of 110V or 220V from an electric power source has never been developed yet. Up to now, a variety of experiments have been tried, but problems to be solved at a power supply end have still existed. As a result, the LED electric bulb still remains at a development stage. To solve the above-described problems, the prior art receives an alternating-current (AC) input voltage and transforms the received voltage into a desired voltage through a voltage transformer. Then, the prior art passes only the positive voltage through a diode or bridge circuit, and then passes a capacitor or various types of stabilizers to thereby obtain a desired direct-current (DC) voltage. Thus, the above-described prior art has limitations for volume occupied by a voltage transformer or various types of stabilizers and size of components according to a current capacity. These limited devices are AC-DC converters, switching mode power supplies, general power supplies and so on. A power supply having no voltage transformer may be used for an LED bulb. However, a counter-measurement for a ripple of current, and an abrupt change of current and voltage for variation of loads, is insufficient. Accordingly, the power supply having no voltage transformer is used only as an experimental power supply . Also, the LED bulb does not guarantee a capacity, stability and size so as to be fitted into the socket base of a general electric bulb. In particular, there is no power supply for an LED bulb which can be inserted into a socket base to then receive sufficient power voltage, and safely operate against variation of loads, so as to be directly connected with an AC socket base and used instead of an existing electric bulb or three wavelength lamp. Further, it is extremely difficult to make a power supply which can supply sufficient power voltage for activating LEDs and be sufficiently fitted into a compact LED bulb.
Disclosure of the Invention To solve the above problems, it is an object of the present invention to provide a light emitting diode (LED) electric bulb having an ultra-compact electric conversion power supply, which is compact and operates stably even with a variety of types of variation in loads, and absorbs abrupt current, voltage, and thermal shock due to variation of loads, to thereby perform a stable operation, in which the electric conversion power supply can be sufficiently contained in volume of the socket type electric bulb. It is another object of the present invention to provide an LED electric bulb which can be inserted into an existing electric bulb socket and illuminate light in many directions. To accomplish the above object of the present invention, according to the present invention, there is provided a light emitting diode (LED) bulb comprising: a socket base which can be inserted into an existing bulb socket and which activates a plurality of LEDs for illumination when electric power is supplied to the socket; a substrate on the upper portion of which the plurality of LEDs are installed and on the lower portion of which an electric conversion power supply is installed; a flexible tube with which each LED lead is covered in a manner that each of the plurality of LEDs can be bent flexibly at will in multiple directions; and an electric bulb main body on which the substrate is mounted and whose lower portion is inserted and fixed in the socket base. Thus, the LED bulb according to the present invention can be inserted into the existing electric bulb socket irrespective of size of the LEDs and illuminate light from the LEDs in multiple directions .
Brief Description of the Drawings The above and other objects and advantages of the present invention will become more apparent by describing the preferred embodiment thereof in detail with reference to the accompanying drawings in which: FIG. 1 is a circuit diagram of a light emitting diode (LED) bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket; FIG. 2 is a front view showing an LED bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket; FIG. 3 is a perspective view showing a state where LEDs of FIG. 2 have been bent in many directions; and FIG. 4 is a perspective view showing an LED bulb having an electric conversion power supply according to another embodiment of the present invention, in which the LED bulb can be inserted into an existing electric power socket and a reflective cap which can reflect light illuminated from LEDs .
Best Mode for Carrying out the Invention Hereinbelow, a light emitting diode (LED) electric bulb according to the present invention will be described with reference to the accompanying drawings . FIG. 1 is a circuit diagram of a light emitting diode (LED) bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket. In FIG. 1, the LED electric bulb includes capacitors Cl and C2, a diode bridge Dl, a Zener diode D8, LEDs D2-D7 and D9-D20, and resistors Rl, R2 and R3. As shown in FIG.1, an applied alternating-current (AC) power voltage of 220V passes through a resistor Rl and is supplied to a smoothing circuit which is connected in series with the resistor Rl. The smoothing circuit includes a resistor R2 and a capacitor Cl which are connected in parallel with each other. Here, a considerable amount of current is attenuated through the resistor R2 and the capacitor Cl . The current whose considerable amount has been attenuated passes through a diode bridge Dl which plays a role of a rectifier and rectifies an AC current into a direct-current (DC) current.
The smoothing circuit and the diode bridge are connected in series with each other. The DC current output from the diode bridge Dl is maintained as a constant voltage of DC 48V by a Zener diode D8. The constant voltage is smoothened by a electrolytic capacitor C2 which stabilizes the DC voltage. Meanwhile, the number of Zener diodes can be changed appropriately according to the number of LEDs . Finally, when a voltage of DC 48V is determined as a constant voltage, the power supply voltage passes through a resistor R3 to then be applied to LEDs D2-D7 and D9-D20, and to thus activate the LEDs. Meanwhile, since LEDs operate at different operating voltages according to color of each of the LEDs, the number of the LEDs can vary. For example, red and yellow LEDs operate at 1.8V or so, and a blue LED operates at 3V or so. Also, when an AC voltage is applied to the LED electric bulb, a circuit which is used in a circuit operating at consumption current of 100mA or less, as described above. As described above, when a voltage of AC 220V is applied to the LED electric bulb, consumption current of only 30mA flows through fourteen LEDs which are connected in series with one another. FIG. 2 is a front view showing an LED bulb having an electric conversion power supply according to the present invention, in which the LED bulb can be inserted into an existing electric power socket. In FIG. 2, the LED electric bulb includes a socket base 1, a substrate 2, a flexible tube 4, LEDs 5 and an electric bulb main body 6. As shown in FIG. 2, the socket base 1 has a conventional shape, and is inserted into a socket (not shown) . Here, when a power voltage is supplied to the LEDs 5 from an electric power supply (not shown), the LEDs 5 are activated for illumination. Also, a number of LEDs 5 are installed on the externally exposed upper portion of the substrate 2. The above-described electric conversion power supply (not shown) is installed on the lower portion of the substrate 2, in which the lower portion of the substrate 2 is sealed in the electric bulb main body 6. Also, the leads of each LED are covered with a flexible tube 4 so that the LEDs 5 can be flexibly bent at will. As described above, since the leads of each LED are covered with the flexible tube 4, the LEDs 5 can be directed to many directions as shown in FIG. 3. Accordingly, light can be conveniently illuminated to a desired direction. FIG. 4 is a perspective view showing an LED bulb having an electric conversion power supply according to another embodiment of the present invention, in which the LED bulb can be inserted into an existing electric power socket and a reflective cap which can reflect light illuminated from LEDs . The configuration of FIG. 4 is almost same as that of FIG. 2. However, the configuration of FIG. 4 differs from that of FIG. 2, in that a reflective cap 3 surrounds an electric conversion power supply, a substrate 2 and LEDs 5. Besides, the function and effect of the FIG. 4 LED electric bulb is substantially same as those of the FIG. 2 LED electric bulb. Although the present invention has been described only with respect to the above-described embodiments, it is apparent that the present invention can be modified or implemented in various forms within the scope of the appended claim and without departing off from the objects and background of the present invention.
Industrial Applicability As described above, a light emitting efficiency of an LED bulb having an electric conversion power supply according to the present invention is higher than that of the existing electric bulb. Also, power consumption of the present invention is smaller than the existing electric bulb. Also, the present invention can reduce a maintenance cost because of long lifetime due to compactness and light weight. Also, the electric bulb canbe fitted into the existing electric bulb socket, and illuminate light in user's desired directions.

Claims

What is claimed is : 1. A light emitting diode (LED) bulb comprising: a socket base which can be inserted into an existing bulb socket and "which activates a plurality of LEDs for illumination when electric power is supplied to the socket; a substrate on the upper portion of which the plurality of LEDs are installed and on the lower portion of which an electric conversion power supply is installed; a flexible tube with which each LED lead is covered in a manner that each of the plurality of LEDs can be bent flexibly at will in multiple directions; and an electric bulb main body on which the substrate is mounted and whose lower portion is inserted and fixed in the socket base.
PCT/KR2004/001607 2003-07-01 2004-07-01 Led bulb having electric conversion power supply WO2005003624A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2003-0020992 2003-07-01
KR20-2003-0020992U KR200331747Y1 (en) 2003-07-01 2003-07-01 Light emitting diodes lamp using power supply

Publications (1)

Publication Number Publication Date
WO2005003624A1 true WO2005003624A1 (en) 2005-01-13

Family

ID=33562842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001607 WO2005003624A1 (en) 2003-07-01 2004-07-01 Led bulb having electric conversion power supply

Country Status (2)

Country Link
KR (1) KR200331747Y1 (en)
WO (1) WO2005003624A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8727574B2 (en) 2010-09-21 2014-05-20 Federal-Mogul Corporation LED light module with light pipe and reflectors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001052504A (en) * 1999-08-06 2001-02-23 Inax Corp Lighting system
US6227679B1 (en) * 1999-09-16 2001-05-08 Mule Lighting Inc Led light bulb
US6371636B1 (en) * 1999-05-24 2002-04-16 Jam Strait, Inc. LED light module for vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6371636B1 (en) * 1999-05-24 2002-04-16 Jam Strait, Inc. LED light module for vehicles
JP2001052504A (en) * 1999-08-06 2001-02-23 Inax Corp Lighting system
US6227679B1 (en) * 1999-09-16 2001-05-08 Mule Lighting Inc Led light bulb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8727574B2 (en) 2010-09-21 2014-05-20 Federal-Mogul Corporation LED light module with light pipe and reflectors

Also Published As

Publication number Publication date
KR200331747Y1 (en) 2003-11-01

Similar Documents

Publication Publication Date Title
JP5559264B2 (en) High efficiency ACLED drive circuit
JP4791794B2 (en) LED lighting attachment
US8198831B2 (en) LED lamp-lighting circuit and LED lamp as well as an LED lamp-lighting conversion socket
JP5558647B1 (en) Drive circuit, illumination light source, and illumination device
JP4918180B2 (en) LED lighting circuit, lamp and lighting device
US8432103B2 (en) LED drive circuit, LED illumination fixture, LED illumination device, and LED illumination system
WO2012090489A1 (en) Light-emitting diode drive circuit and led light source
US20100102735A1 (en) Led light string with zener diodes or resistors as shunts
US20170013688A1 (en) Solid-State Lighting Operable With Compact Fluorescent Ballasts And AC Mains
US20100148694A1 (en) LED light string with capacitor based rectifier filter for increasing output voltage
US8044599B2 (en) Light string with alternate LED lamps and incandescent lamps
KR20140058073A (en) Illumination system
KR100893906B1 (en) Led lighting lamp and led lighting apparatus
KR20110102523A (en) Led drive circuit and led lighting device
KR100621188B1 (en) LED Bulb Using Power Supply
JP2012204086A (en) Solid-state light-emitting element lamp and luminaire
WO2005003624A1 (en) Led bulb having electric conversion power supply
KR20100002474A (en) Luminous device
JP4975883B1 (en) Light emitting diode drive circuit and LED light source
EP2763506B1 (en) Drive circuit, illumination light source, and lighting apparatus
CN211090050U (en) L ED lamp cluster control system
KR20180102296A (en) Noble Method of LED Power Saving by Thermal Energy Feedback
ES2949431T3 (en) Apparatus and system for providing a power converter
JP3188404U (en) Lighting device
JP3188405U (en) Lighting device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase