WO2010050659A1 - Dispositif d’éclairage à diodes électroluminescentes destiné à être utilisé avec une douille de lampe fluorescente - Google Patents

Dispositif d’éclairage à diodes électroluminescentes destiné à être utilisé avec une douille de lampe fluorescente Download PDF

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Publication number
WO2010050659A1
WO2010050659A1 PCT/KR2009/002999 KR2009002999W WO2010050659A1 WO 2010050659 A1 WO2010050659 A1 WO 2010050659A1 KR 2009002999 W KR2009002999 W KR 2009002999W WO 2010050659 A1 WO2010050659 A1 WO 2010050659A1
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WO
WIPO (PCT)
Prior art keywords
led
power
module
terminal
fluorescent lamp
Prior art date
Application number
PCT/KR2009/002999
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English (en)
Korean (ko)
Inventor
서경원
Original Assignee
주식회사 흥화전자
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 주식회사 흥화전자 filed Critical 주식회사 흥화전자
Publication of WO2010050659A1 publication Critical patent/WO2010050659A1/fr

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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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/24—Circuit arrangements for protecting against overvoltage
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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]
    • 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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to an LED lamp for connecting a fluorescent lamp socket, and more particularly, it is possible to provide stable lighting even when connected to a fluorescent ballast, and to supply a stable power to the LED module, and also compatible with a conventional LED module to a fluorescent lamp.
  • the present invention relates to a device for allowing a conventional LED module to be mounted on a fluorescent lamp luminaire by being plugged into a connection cap manufactured to enable this.
  • Fluorescent lamps are widely used due to their long life and low power consumption compared to incandescent lamps. However, there is a serious problem that mercury flowing out of the fluorescent tube causes environmental pollution in the disposal of the fluorescent lamp after use.
  • LEDs can not only solve environmental pollution problems, but also save energy by about 30% compared to fluorescent lamps. Is rising.
  • the conventional LED technology applied to fluorescent lamps is to replace only fluorescent lamps with LED lighting in a state where a conventional fluorescent ballast is installed, and Korean Patent Nos. 10-0821975, 10-0844538, and Korean Patent Publication No. 10-2007-95764 1, a circuit diagram of an LED lamp for connecting a fluorescent lamp socket according to Korean Patent No. 10-0821975 is disclosed.
  • the fluorescent lamp recognizes the normal operation when the instant discharge occurs, and enters the lighting mode.
  • the additional resistance (R1) is to be provided to continuously flicker or provide a discharge route, the additional resistance includes the amount of power consumed by the ordinary fluorescent lamp plus the power consumed by the LED. Since it consumes power, there is a disadvantage in that power consumption increases rather than a conventional fluorescent lamp.
  • the prior art has a disadvantage that the general-purpose LED module can not be used because only the LED module made in a special form to be mounted on the fluorescent lamp socket.
  • the present invention has been made to solve the above problems, an object of the present invention is to enable stable lighting even when the LED module is connected to the ballast for fluorescent lamps and to provide a stable power supply to the LED module high life of the LED And to maximize the characteristics of high efficiency.
  • Another object of the present invention is to insert a conventional LED module to the fluorescent lamp socket by plugging the connection cap made to be compatible with the fluorescent lamp to be able to use the conventional LED module mounted on the fluorescent lamp luminaire to maximize the compatibility will be.
  • overvoltage, overcurrent protection, constant voltage through DC-DC conversion, reverse polarity protection circuits, etc. provide a stable voltage to the LED while improving the life of the LED.
  • a ballast for stabilizing the voltage required for the fluorescent lamp applied from the power source, a power module for converting the AC power applied through the ballast to the DC power, and the power source And a LED module driven by a DC power provided from a conversion module, wherein the power module includes a first overvoltage protection unit connected to a first output terminal of the ballast and a first bridge rectifier connected to a rear end of the first overvoltage protection unit.
  • a smoothing unit for removing the ripple of the DC power rectified by the first bridge rectifying unit, a DC-DC converter unit converting the DC power passing through the smoothing unit into an appropriate voltage for driving the LED module and applying it to the LED module;
  • a positive terminal connected to a second overvoltage protection unit connected to a second output terminal of the ballast and a rear end of the second overvoltage protection unit;
  • LED lamp for connecting a fluorescent lamp socket comprising a second bridge rectifying unit which is connected to the (+) terminal of the first bridge rectifying unit and the (-) terminal is connected to the (-) terminal of the second bridge rectifying unit.
  • an overcurrent protection part is interposed between the first bridge rectifying part and the smoothing part.
  • a reverse polarity protection bridge diode for reverse polarity protection is interposed between the power module and the LED module.
  • a cap body having a cylindrical shape having an accommodating space for accommodating the power module therein and having a rear surface opened and a first connection pin protruding from one end connected to the fluorescent lamp socket and the other end connected to the power module on the front surface;
  • a connection cap including a rear cover coupled to a rear surface of the cap body and having a connection groove formed at one side thereof, and one end coupled to the connection groove of the connection cap at one side thereof, and the other end electrically connected to the connection terminal of the LED module; 2 is more preferably a terminal cap protruding and the other end is coupled to the LED module.
  • the LED module is a metal material
  • the heat sink having a terminal cap fixing groove for fixing the terminal cap on the front surface
  • the LED substrate is installed on both sides of the heat sink
  • the LED array and the transparent or translucent material installed on the LED substrate It is configured to include a protection and diffusion plate installed on the front and rear sides of the heat sink.
  • the cap body has a cylindrical shape having an accommodating space for accommodating the power module therein, the rear surface of which is opened, and a rectangular protrusion corresponding to the rectangular protrusion of the fixed body on the fixing body and the outer peripheral surface of which the rectangular protrusion is formed on the inner circumferential surface.
  • the movable body is movable back and forth within the fixing body, including a movable body formed on the front surface and the first connection pin is protruded from the other end is connected to the fluorescent lamp socket and the other end is connected to the power module. .
  • the LED module is connected to the fluorescent ballast, it is possible to stable lighting and to supply a stable power supply to the LED module has the effect of maximizing the characteristics of the long life and high efficiency of the LED. .
  • FIG. 1 is an internal circuit diagram of a LED lamp for connecting a fluorescent lamp socket according to the prior art.
  • FIG 2 and 3 is an internal circuit diagram of the LED lamp for fluorescent lamp socket connection according to the present invention.
  • Figure 4 is a plan view showing a coupling state of the connection cap detachable LED lamp according to the first embodiment of the present invention
  • Figure 5 is a plan view showing a separation state of the connection cap detachable LED lamp according to the first embodiment of the present invention to be.
  • FIGS. 4 and 5 are side views of the LED module of FIGS. 4 and 5.
  • FIG 5 is a sectional view of a connecting cap according to a modification of the first embodiment.
  • connection cap integrated LED lamp is a plan view of a connection cap integrated LED lamp according to a second embodiment of the present invention.
  • FIG. 9 is a front sectional view of a power supply module built-in LED lamp according to a third embodiment of the present invention.
  • LED substrate 4 LED
  • Terminal cap fixing groove 10 First overvoltage protection
  • LED module 200 terminal cap
  • cap body 311 fixed body
  • 313 moving object 311a, 313a: rectangular protrusion
  • first connecting pin 340 accommodation space
  • the LED lamp for connecting the fluorescent lamp socket according to the present invention is a direct ballast 600 and stabilizes the voltage required for the fluorescent lamp and the AC power applied through the ballast 600 It is configured to include a power module 400 for converting to a power source, and an LED module 100 driven by a DC power provided from the power module.
  • the power supply module 400 includes a first overvoltage protection unit 10, a first bridge rectifier 20, an overcurrent protection unit 30, a smoothing unit 40, a DC-DC converter unit 50, and a second overvoltage protection unit. And a second bridge rectifier 21.
  • the first overvoltage protection unit 10 and the second overvoltage protection unit 11 are connected to both output terminals of the ballast, respectively, to protect the circuit of the latter stage when a surge voltage is input from the outside, and the magnitude of the voltage applied to both ends.
  • Varistors and fuses which are nonlinear semiconductor resistance elements whose resistance values change according to the present invention, may be used.
  • the first bridge rectifier 20 and the second bridge rectifier 21 are connected to the rear ends of the first and second overvoltage protection units 10 and 11 to convert commercial AC power to DC power.
  • the + pole and the-pole of the second bridge rectifier 20 and 21 are connected to each other. 2 and 2b, the present inventors have arranged two bridge rectifiers 20 and 21 on both output ends of the ballast 600, respectively, and the + of each bridge rectifier 20 and 21 is shown. When the pole and -pole are interconnected, it is found that even without a separate load resistance, the conventional flicker does not occur and power consumption is significantly reduced.
  • two bridge rectifiers 20 and 21 connected with the positive pole and the negative pole provide a momentary discharge path and recognize that the ballast is in normal operation. It is expected that this is because the device enters the lighting mode.
  • the overcurrent protection unit 30 is interposed between the bridge rectifying units 20 and 21 and the smoothing unit 40 to protect the LED module 100 at the rear end from the overcurrent.
  • the overcurrent protection unit 30 has a relatively large resistance value at a low temperature. When the temperature is reached, the resistance decreases rapidly, and a negative temperature thermistor (NTC) having a characteristic in which a current hardly flows more than a corresponding temperature may be used.
  • NTC negative temperature thermistor
  • the smoothing part 40 removes the ripple of the DC power rectified by the bridge rectifying parts 20 and 21.
  • the DC-DC converter unit 50 converts the DC power passing through the smoothing unit 40 into an appropriate voltage for driving the LED module 100 and applies the LED power to the LED module 100.
  • the LED of the LED module 100 Known IC circuits that automatically generate an appropriate DC voltage depending on the number can be used.
  • Figure 4 is a plan view showing a coupling state of the connection cap detachable LED lamp according to the first embodiment of the present invention
  • Figure 5 is a plan view showing a separation state of the connection cap detachable LED lamp according to the first embodiment of the present invention
  • 6 is a side view of the LED module of FIGS. 4 and 5.
  • the power supply module 400 for driving the LED module 100 is installed in the connection cap 300, and the connection cap 300 is electrically connected between the LED module 100 and the fluorescent lamp socket.
  • LED board can be used for fluorescent lamps.
  • Connection cap detachable LED lighting lamp has a structure in which the terminal cap 200 is coupled to both ends of the LED module 100 and the connection cap 300 is coupled to the outside of the terminal cap 200. ) Will fit into the fluorescent lamp socket.
  • the LED module 100 has a plurality of LED arrays 4 are installed on the LED substrate 3 and connection terminals 90 are formed at both ends, and a connection between the connection terminal 90 and the LED array 4 is prevented by a user's mistake. As a result, even if the DC power supply is incorrectly inserted into the LED lamp, the reverse polarity protection bridge diode 80 is provided to keep the DC power supplied to the LED array 4 constant.
  • the LED module 100 of the first embodiment includes a heat sink 2 having a terminal cap fixing groove 6 for fixing the terminal cap 200 to a front surface of a metal material; LED board 3 installed on both sides of the heat sink 2, LED array 4 installed on the LED board 3 and the protection and diffusion provided on the front and rear sides of the heat sink 2 as a transparent or translucent material.
  • the board 1 is comprised. That is, in the first embodiment, the LED substrate 3 is provided on both sides of the heat sink 2 so as to generate 360 ° of light.
  • Terminal cap 200 is coupled to both ends of the LED module 100, the second end is electrically connected to the connection cap 300 and the other end is electrically connected to the connection terminal 90 of the LED module 100
  • the connecting pin 210 is protruded.
  • the connection cap 300 has a cylindrical shape in which a receiving space is formed in which a power module 400 is accommodated.
  • the connection cap 300 has a first connection in which a rear surface is opened, one end of which is connected to a fluorescent lamp socket, and the other end of which is connected to a power module 400.
  • the rear cover 320 is coupled to the cap main body 310 and the cap main body 310 in which the pin 330 protrudes, and a connection groove 321 is formed at one side for the coupling with the second connection pin 210. It is configured to include).
  • FIG. 7 is a sectional view of a connecting cap according to a modification of the first embodiment.
  • connection cap 300 can be stretched in the front and rear directions so that the LED module 100 can be connected to the fluorescent lamp socket regardless of the length of the LED module 100.
  • the cap body 310 has a cylindrical shape in which an accommodating space 340 in which the power module 400 is accommodated is opened, and a rear body is opened and a rectangular protrusion 311 a is formed on an inner circumferential surface thereof.
  • a first projection having a rectangular projection 313a corresponding to the rectangular projection 311a of the fixing body 311 formed on the 311 and the outer circumferential surface thereof, one end of which is connected to the fluorescent lamp socket and the other end of which is connected to the power supply module 400.
  • the connection pin 330 is configured to include a movable body 313 protruding.
  • the movable body 313 can be extended out of the fixing body 311 to be used, so that all the LED modules (regardless of the size of the LED module 100) can be used.
  • 100) has the advantage that can be used for fluorescent lamps.
  • connection cap integrated LED lamp is a plan view of a connection cap integrated LED lamp according to a second embodiment of the present invention.
  • connection cap integrated LED lamp according to the second embodiment is the terminal cap 200 is removed in the first embodiment and the connection cap 300 is manufactured integrally with the LED module 100. same.
  • FIG. 9 is a front sectional view of a power supply module built-in LED lamp according to a third embodiment of the present invention.
  • the third embodiment has a structure in which the LED substrate 3 is installed only on one surface of the heat sink and the power module 400 for driving the LED array 4 is disposed on the rear surface to irradiate light in a 180 ° direction. 300 is omitted and the second connecting pin 210 of the terminal cap 200 is directly coupled to the fluorescent lamp socket.

Abstract

La présente invention concerne un dispositif d’éclairage à diodes électroluminescentes destiné à être utilisé avec une douille de lampe fluorescente, comportant un stabilisateur pour la stabilisation de la tension requise pour la lampe fluorescente, un module d’alimentation pour convertir l’alimentation de courant alternatif appliquée à travers le stabilisateur en une alimentation de courant continu, et un module de diodes électroluminescentes alimenté par l’alimentation de courant continu provenant du module convertisseur d’énergie. Le module d’alimentation comporte : un premier parasurtenseur connecté à une première extrémité de sortie du stabilisateur; un premier pont rectificateur connecté à l’extrémité arrière du premier parasurtenseur; une section de filtrage pour éliminer des fluctuations provenant de l’alimentation de courant continu qui est rectifié par le premier pont rectificateur; un convertisseur continu-continu, qui convertit l’alimentation de courant continu ayant traversé la section de filtrage en une tension appropriée pour commander le module LED et applique la tension au module LED; un second parasurtenseur connecté à la seconde extrémité de sortie du stabilisateur; et un second pont rectificateur connecté à l’arrière du second parasurtenseur, dont la borne positive est connectée à la borne positive du premier pont rectificateur et dont la borne négative est connectée à la borne négative du second pont rectificateur. Selon la présente invention, même lorsqu’un module LED est connecté au stabilisateur pour la lampe fluorescente, un éclairage stable peut être obtenu; des propriétés telles qu’une longue durée de vie et une efficacité élevée des diodes électroluminescentes peuvent être également maximisées grâce à l’alimentation stable au module LED.
PCT/KR2009/002999 2008-10-30 2009-06-04 Dispositif d’éclairage à diodes électroluminescentes destiné à être utilisé avec une douille de lampe fluorescente WO2010050659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0106877 2008-10-30
KR1020080106877A KR100884279B1 (ko) 2008-10-30 2008-10-30 형광등 소켓 연결용 ｌｅｄ 조명등

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WO2010050659A1 true WO2010050659A1 (fr) 2010-05-06

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WO (1) WO2010050659A1 (fr)

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US20110121756A1 (en) * 2009-11-19 2011-05-26 James Thomas Fluorescent Light Fixture Assembly with LED Lighting Element and Converter Modules
CN102155641A (zh) * 2010-12-07 2011-08-17 刘昌贵 一种led日光灯以及日光灯连接电路
CN102297376A (zh) * 2010-06-28 2011-12-28 东芝照明技术株式会社 Led灯系统
CN102378444A (zh) * 2010-08-11 2012-03-14 三星Led株式会社 Led灯及其驱动电路
GB2495135A (en) * 2011-09-30 2013-04-03 Saf T Glo Ltd Elongate LED lighting system to replace fluorescent lighting in mass transit vehicles
US8593067B2 (en) 2010-01-27 2013-11-26 Toshiba Lighting & Technology Corporation Led lighting device and illumination apparatus
US8638050B2 (en) 2010-05-14 2014-01-28 Toshiba Lighting And Technology Corporation DC power supply unit and LED lighting apparatus
US8742681B2 (en) 2009-11-09 2014-06-03 Toshiba Lighting & Technology Corporation LED lighting device, illuminating device and power supply therefore having a normally-on type switching element
US20150173138A1 (en) * 2013-12-18 2015-06-18 General Electric Company A device and sytem for led linear fluorescent tube lamp driver
RU2623093C2 (ru) * 2012-02-24 2017-06-22 Филипс Лайтинг Холдинг Б.В. Модифицированная светодиодная лампа с шунтирующими конденсаторами, параллельными выпрямляющим диодам, для использования с балластом
RU2625333C2 (ru) * 2012-03-29 2017-07-13 Филипс Лайтинг Холдинг Б.В. Адаптационная схема для подсоединения светодиода к балласту

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KR100984850B1 (ko) 2009-03-20 2010-10-04 주식회사 엠에스엠텍 형광램프 및 형광램프대체용 엘이디 램프용 전원공급 장치
CN101909385A (zh) * 2009-10-22 2010-12-08 黄赟山 Led日光灯内置交流驱动方法及电路
KR101091046B1 (ko) * 2010-01-18 2011-12-08 안정수 형광등용 전자식 안정기를 이용한 ｌｅｄ 점등회로
KR100996670B1 (ko) * 2010-06-08 2010-11-25 이정항 전자식 안정기 타입의 엘이디 형광등
WO2013039366A2 (fr) * 2011-09-17 2013-03-21 Lee Sangbeom Éclairage à del à économie d'énergie
KR101382226B1 (ko) 2012-04-20 2014-04-10 주식회사 하이딥 형광등용 안정기를 이용한 ｌｅｄ 조명 장치
KR101521834B1 (ko) * 2013-04-11 2015-05-21 주식회사 하이딥 안정기를 이용한 ｌｅｄ 조명 장치
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KR101633364B1 (ko) * 2014-10-23 2016-06-24 이진양 폐 안정기 재활용을 위한 가로등 점등장치
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US8742681B2 (en) 2009-11-09 2014-06-03 Toshiba Lighting & Technology Corporation LED lighting device, illuminating device and power supply therefore having a normally-on type switching element
US9392655B2 (en) 2009-11-09 2016-07-12 Toshiba Lighting & Technology Corporation LED lighting device and illuminating device
US9155143B2 (en) 2009-11-09 2015-10-06 Toshiba Lighting & Technology Corporation LED lighting device and illuminating device
US20110121756A1 (en) * 2009-11-19 2011-05-26 James Thomas Fluorescent Light Fixture Assembly with LED Lighting Element and Converter Modules
US8896207B2 (en) * 2009-11-19 2014-11-25 ElectraLED Inc. Fluorescent light fixture assembly with LED lighting element and converter modules
US8593067B2 (en) 2010-01-27 2013-11-26 Toshiba Lighting & Technology Corporation Led lighting device and illumination apparatus
US8638050B2 (en) 2010-05-14 2014-01-28 Toshiba Lighting And Technology Corporation DC power supply unit and LED lighting apparatus
CN102297376A (zh) * 2010-06-28 2011-12-28 东芝照明技术株式会社 Led灯系统
EP2403320A1 (fr) * 2010-06-28 2012-01-04 Toshiba Lighting & Technology Corporation Système de lampe à DEL
CN102378444A (zh) * 2010-08-11 2012-03-14 三星Led株式会社 Led灯及其驱动电路
US8643299B2 (en) 2010-08-11 2014-02-04 Samsung Electronics Co., Ltd. LED lamp and driving circuit for the same
CN102155641A (zh) * 2010-12-07 2011-08-17 刘昌贵 一种led日光灯以及日光灯连接电路
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