WO2015026045A1 - Lampe à led - Google Patents

Lampe à led Download PDF

Info

Publication number
WO2015026045A1
WO2015026045A1 PCT/KR2014/003506 KR2014003506W WO2015026045A1 WO 2015026045 A1 WO2015026045 A1 WO 2015026045A1 KR 2014003506 W KR2014003506 W KR 2014003506W WO 2015026045 A1 WO2015026045 A1 WO 2015026045A1
Authority
WO
WIPO (PCT)
Prior art keywords
smoothing capacitor
led lamp
current
circuit
resistance element
Prior art date
Application number
PCT/KR2014/003506
Other languages
English (en)
Korean (ko)
Inventor
박명구
Original Assignee
금호전기 주식회사
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 금호전기 주식회사 filed Critical 금호전기 주식회사
Publication of WO2015026045A1 publication Critical patent/WO2015026045A1/fr

Links

Images

Classifications

    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/39—Circuits containing inverter bridges
    • 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
    • H05B45/357—Driver circuits specially adapted for retrofit LED light sources
    • 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
    • H05B47/28—Circuit arrangements for protecting against abnormal temperature
    • 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 a LED lamp that can be used directly compatible with the fluorescent lamp which is currently used as a main light source of general lighting, more specifically, LED lamp and even in the case of breakage of the main internal parts, such as power devices flowing the main current of the LED lamp and
  • the present invention relates to an LED lamp that can protect an external current control device such as a ballast connected to an LED lamp from damage caused by abnormal operation.
  • LEDs Light Emitting Diodes
  • LED is an environmentally friendly light source that does not contain mercury, and is widely used as a next-generation light source used for a backlight for a portable terminal, a backlight for an LCD TV, a vehicle lamp, and general lighting.
  • fluorescent lamps containing environmental waste such as incandescent lamps or mercury lamps, which have been used as the main light source for lighting for the last 100 years, are rapidly being replaced by LED lamps.
  • LED lamps incandescent lamps or halogen lamps can be replaced directly, but when replacing fluorescent lamps, which are the mainstream of general lighting, the internal wiring, the lighting fixtures themselves, or dedicated ballasts can be replaced. Since it must be installed separately, it can be expensive in time and economically. Accordingly, LED fluorescent lamps, which have many advantages in various aspects, have not been actively spread yet.
  • the compatible LED lamp 100 includes rectifier circuits 111 and 112 for full-wave rectifying the input AC, smoothing capacitor 120 for smoothing the full-wave rectified power in the rectifier, and a driver for supplying a constant current to the LED array. 130, and LED array 140.
  • the compatible LED lamp is an LED lamp to replace the existing fluorescent lamp.
  • the exterior has four external connection pins similar to the conventional fluorescent lamp, and it operates even when connected to a ballast mounted in the luminaire to drive the conventional fluorescent lamp. This says possible LED lamps.
  • FIG. 2 (a) shows a structure in which a conventional LED lamp is connected to a magnetic choke ballast
  • FIG. 2 (b) shows a circuit form in which a conventional LED lamp is connected to a magnetic choke ballast.
  • the conventional LED lamp 200 has four external connection pins 1, 2, 3, and 4 as a replacement for a conventional fluorescent lamp.
  • the lamp 200 When the lamp 200 is connected to the magnetic choke ballast 202 of the conventional fluorescent lamp, it can be connected to the ballast using any two connection pin combinations of the four external connection pins of (1-4).
  • the alternating current passing through the magnetic choke ballast 202 in the alternating current power supply 201 passes through the rectifying circuit section 211, and is rectified and converted to pulse current.
  • the smoothing capacitor 220 may be connected to reduce the pulsation rate of the converted pulse flow.
  • the driver 230 may supply a constant current to the LED array 240 load by controlling a switching duty cycle of the built-in inverter.
  • the commercial power supply 201 is directly applied to both ends of the magnetic choke stabilizer 202 so that current flows continuously to the magnetic choke stabilizer 202. That is, a large amount of power is continuously consumed in the magnetic choke ballast 202, and as a result, the magnetic choke ballast 202 is overheated to a high temperature, thereby increasing the risk of a fire.
  • FIG. 3 (a) shows a structure in which a conventional LED lamp is connected to an electronic ballast
  • FIG. 3 (b) shows a circuit form in which a conventional LED lamp is connected to an electronic ballast.
  • ballasts are used as conventional ballasts for fluorescent lamps.
  • ballast overheating may occur due to internal component damage There is a possibility that a burnout problem may occur.
  • an embodiment of the present invention includes first to fourth external connection pins, and using two external connection pins of the first to fourth external connection pins as input and output terminals, respectively.
  • An LED lamp comprising: a rectifying circuit section for converting an input AC current into a pulse current, a smoothing capacitor for smoothing a current passing through the rectifying circuit section, an LED array operated by a current smoothed by the smoothing capacitor, and The LED lamp may be provided on a path including the input terminal, the smoothing capacitor, and the output terminal, and include a protection circuit to block current flow in the path when the smoothing capacitor or the driver is short. have.
  • the electronic or magnetic ballast for controlling the current of the LED lamp connected to the outside by interrupting the main current flowing through the LED lamp even if the main component responsible for the transfer of the main power inside the LED lamp is damaged This prevents accidents such as burnout caused by overcurrent.
  • this can be achieved by simple devices such as semiconductors, resistors, capacitors, and fuses, which can reduce costs and simplify the process.
  • 1 is a basic circuit diagram of a conventional compatible LED lamp.
  • 2 (a) and 2 (b) are a structural diagram and a circuit diagram in which a conventional compatible LED lamp is connected to a magnetic choke ballast.
  • 3A and 3B are structural and circuit diagrams in which a conventional compatible LED lamp is connected to an electronic ballast.
  • FIG. 4 is a structural diagram in which an LED lamp according to an embodiment of the present invention is connected to a magnetic choke ballast.
  • FIG. 5 is a structural diagram of an LED lamp connected to a magnetic choke ballast according to another embodiment of the present invention.
  • FIG. 6 is a structural diagram of an LED lamp connected to an electronic ballast according to another embodiment of the present invention.
  • FIG. 4 is a configuration diagram in which the LED lamp 400 according to one embodiment of the present invention is connected to a magnetic choke ballast.
  • the LED lamp 400 may include the rectifier circuit parts 411 and 412, the smoothing capacitor 420, the driver 430, the LED array 440, and the protection circuit part 450.
  • the LED lamp 400 is connected to the AC power supply 401 and the magnetic choke ballast 402
  • the LED lamp according to the present embodiment may be connected to the electronic ballast as well as the magnetic choke ballast. It can also be directly connected to a low frequency commercial AC power supply without a ballast.
  • LED lamp 400 has four external connection pins (1, 2, 3, 4), can be combined as it is in the luminaire to which conventional fluorescent lamps are coupled.
  • the first rectifying circuit part 411 is connected to the first external connecting pin 1 and the second external connecting pin 2
  • the second rectifying circuit part 412 is connected to the third external connecting pin 3.
  • a fourth external connection pin 4 In the present embodiment, the first external connection pin 1 and the second external connection pin 2 can be used as the input terminal and the output terminal of the AC current, respectively.
  • the rectifier circuits 411 and 412 may convert AC power input through the external connection pins 1 and 2 into DC power.
  • the rectifier circuit parts 411 and 412 may be implemented as diodes, and the AC power may be rectified by the rectifier circuit parts 411 and 412 to be converted into pulse currents.
  • the rectifier circuits 411 and 412 may be implemented in various forms by a combination arrangement of diodes. Although the first rectifier circuit part 411 and the second rectifier circuit part 412 are separately shown in the drawing, the location of the rectifier circuit part may be variously implemented.
  • the smoothing capacitor 420 may be connected to the rear ends of the rectifying circuit parts 411 and 412, and may be smoothed by removing the pulsating component from the voltage rectified by the rectifying circuit part 411.
  • an abnormal voltage such as surge may be included in the rectified current by connecting the varistors in parallel between both ends of the rectifying circuit units 411 and 412 or both ends of the smoothing capacitor 420.
  • Absorption or other protection circuits may work.
  • the driver 430 may supply a constant current to the LED 440 by controlling the power smoothed by the smoothing capacitor 420 with an inverter of a constant current circuit method, and a dedicated drive IC component may be used for the driver 430. Can be.
  • the driver 430 may supply a constant current to the LED array 440 load by controlling a switching duty cycle of the built-in inverter.
  • the LED array 440 may be in the form of an array in which a plurality of LED elements are connected in series and / or in parallel.
  • the applied current, the applied voltage, and the power consumption of the LED lamp may be determined according to the number and arrangement of the LED elements included in the LED array 440.
  • the protection circuit 450 is connected between the smoothing capacitor 420 and the rectifier circuit 411 as shown in the drawing, and the abnormality such that the smoothing capacitor 420 or the driver 430 is shorted. It can work during operation.
  • the protection circuit 450 in this embodiment can include a switch circuit 451, a resistance element 452, and a fuse 453.
  • the switch circuit 451 is turned on when an element in charge of the main current path, such as the smoothing capacitor 420 or the driver 430, operates normally.
  • the smoothing capacitor 420 or the driver 430 may be damaged so that the switch circuit 451 may be turned off when the short circuit is short.
  • the switch circuit 451 may be implemented as a semiconductor switch such as a MOSFET or a mechanical switch such as a relay.
  • the operation is as follows.
  • the switch circuit 451 is turned on so that the path of the commercial power source 401-magnetic choke stabilizer 402-rectifier circuit part 411, 412-driver 430-switch circuit 451. Current will flow.
  • the operation is as follows.
  • the switch circuit 451 is turned off and the main current flows through the resistance element 452 connected in parallel to the switch circuit 451.
  • a high voltage commercial power source 401 is directly applied to the choke ballast 402 and the resistance element 452 in series, so that a large abnormal current flows in the resistance element 452. 452) can generate large heat depending on the setting of the value.
  • the fuse 453 may be a thermal fuse.
  • the smoothing capacitor 420 may be shorted.
  • the resistor 452 generates excessive heat due to an abnormal current.
  • the fuse 453 is opened to open the rectifier circuit unit. 411 and the smoothing capacitor 420 may block the flow of the abnormal current flowing through the main current path.
  • the fuse 453 may be a return-type temperature fuse using a bimetal, and in this case, an off operation is performed when an abnormal state occurs. However, when the external or internal abnormal state is solved, the fuse returns to normal operation (on). Will be Therefore, it is possible to prevent overheating by continually flowing excessive current to the external magnetic choke stabilizer 402.
  • the resistance element 452 may cause the magnetic choke ballast 402 to overheat when an internal element is abnormal. Before, the fuse 453 should be able to generate enough heat to operate.
  • the resistance value of the resistance element and the characteristics of the fuse for performing such a function can be appropriately selected.
  • the fuse 453 and the resistor 452 are both disposed between the smoothing capacitor 420 and the first rectifier circuit 411, but only the fuse and the resistor may be adjacent in space. If present, the position may be variously implemented on a path including the input terminal 1, the smoothing capacitor 420, and the output terminal 2. That is, a fuse may be disposed in front of the first rectifier circuit 411, and a resistor and a fuse may be disposed at both ends of the smoothing capacitor 420, respectively.
  • FIG. 5 is a configuration diagram in which the LED lamp 500 according to another embodiment of the present invention is connected to a magnetic choke ballast.
  • FIG. 5 is different from the configuration of the protection circuit unit 550 in comparison with FIG.
  • a semiconductor switch 551 such as a MOSFET is used for the switch circuit of the protection circuit section 550 is shown.
  • the protection circuit 550 in this embodiment may include a switch circuit 551, a resistance element 552, and a fuse 553.
  • the switch circuit 551 first, when the element that is responsible for the main current path, such as the smoothing capacitor 520 or the driver 530, is normally operated, the commercial power source 501 is applied to the rectifier circuit unit ( When the DC current is supplied through the 511 and the smoothing capacitor 520, the operation is as follows. First, the main current at this time flows in the path of the commercial power source 501, the magnetic choke stabilizer 502, the rectifier circuit unit 511, the driver circuit 530, and the resistor 552.
  • the DC power applied to the smoothing capacitor 520 charges the capacitor C1 with a time constant according to the values of the resistor R1 and the capacitor C1, so that the voltage of the capacitor C1 continues to rise by the time constant value and the semiconductor switch ( When the potential to turn on 551 is reached, the semiconductor switch 551 is connected.
  • the main current path element when the main current path element is in an abnormal state, that is, when the smoothing capacitor 520 is shorted or the driver 530 is shorted, the voltage applied to the capacitor becomes 0, and the semiconductor switch is connected through the resistor R1 and the capacitor C1. Since a voltage capable of turning on the gate of 551 cannot be applied, the semiconductor switch 551 is turned off and the main current is connected in parallel with the semiconductor switch 551. 552 only.
  • the fuse 553 may be a thermal fuse, and when the fuse is connected in series in a main current path including a rectifier circuit 511 and a smoothing capacitor 520, the smoothing capacitor 520 may be shorted. In the case of short, the resistor 552 generates excessive heat due to an abnormal current, and when the temperature reaches the short-circuit set temperature of the thermal fuse, the fuse is opened to rectify the rectifier circuit 511. The abnormal current flowing through the main current path formed of the smoothing capacitor 520 may be blocked.
  • the fuse 553 may be a return-type temperature fuse using a bimetal, and in this case, an off operation is performed when an abnormal state occurs, but returns to normal operation when the external or internal abnormal state is resolved. Will be Therefore, it is possible to prevent overheating by continuously flowing excessive current to the external magnetic choke stabilizer 502.
  • the resistance element 552 Since the on-off operation of the fuse 553 is to be performed by the heat generated by the resistance element 552, the resistance element 552 is the magnetic choke ballast when the internal element is abnormal ( Before 502 overheats, it should be possible to generate sufficient heat for the fuse 553 to operate.
  • the resistance value of the resistance element and the characteristics of the fuse for performing such a function can be appropriately selected.
  • the smoothing capacitor 520 which is the main current path element or Input power characteristics and temperature characteristics of the resistance element 552 in an abnormal state such that the driver 530 is shorted are shown in Tables 1 and 2 below.
  • the rated operating temperature of the thermal fuse 553 can be selected in accordance with the time for which the protection circuit 550 is to be operated.
  • the fuse 553 and the resistor 552 are both disposed between the smoothing capacitor 520 and the first rectifier circuit portion 511. However, only the fuse and the resistor may be adjacent in space. If present, the position may be variously implemented on a path including the input terminal 1, the smoothing capacitor 520, and the output terminal 2. That is, a fuse may be disposed in front of the first rectifying circuit unit 511, and a resistor and a fuse may be disposed at both ends of the smoothing capacitor 520, respectively.
  • a protection circuit is added to prevent an overload of an external element when an internal component such as a smoothing capacitor is damaged, and in particular, the product is produced by a simple element such as a resistor, a semiconductor switch, and a fuse. This can reduce costs and simplify the process.
  • FIG. 6 is a configuration diagram in which the LED lamp 600 according to another embodiment of the present invention is connected to the electronic ballast.
  • the present embodiment is a power source for driving LED lamps, and the conventional fluorescent lamp electronics having an internal configuration such as connecting a series resonance circuit composed of a high frequency inductor (Lo) and resonant capacitors (C1, Co) to a half bridge inverter.
  • a series resonance circuit composed of a high frequency inductor (Lo) and resonant capacitors (C1, Co)
  • the half-bridge type inverter consisting of the semiconductor switches Q61 and Q62 operates at the series resonance frequency, and the resonance factor Co has a quality factor of the resonance circuit.
  • the high voltage is induced and the LED lamp connected in parallel to the resonant capacitor Co is operated by this voltage, and the current flowing through the LED lamp is controlled by the impedance jwL o of the resonance inductor Lo. .
  • the capacitor Co used here is for the purpose of controlling the current value, and has a relatively large value relative to the resonant capacitor C1, so that it appears to be in a short state in a high frequency operating state, and thus the overall basic operation is Same as described for the choke ballast.
  • the LED lamp having the safety can be implemented by adding a protection circuit in order to prevent such a problem.
  • the magnetic choke ballast is connected to an AC power source.
  • the power input to the LED lamp according to the present invention is a 'electronic ballast' to a commercial AC power source. It may be a method of connecting or commercial AC power source without ballast. Even in this case, the LED lamp according to the present invention can prevent the internal or external device from being overloaded when an abnormal state such as a breakage of an internal component such as a short circuit of a smoothing capacitor or a driver circuit occurs.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Dans un mode de réalisation, la présente invention concerne une lampe à LED comprenant des première à quatrième broches de connexion externes et utilisant deux broches de connexion externes parmi les première à quatrième broches de connexion externes respectivement en tant que borne d'entrée et borne de sortie. La lampe à LED comprend une unité à circuit redresseur pour convertir un courant alternatif d'entrée en un courant pulsé ; un condensateur de lissage pour lisser le courant qui est passé à travers l'unité à circuit redresseur ; un réseau de LED alimenté par le courant lissé par le condensateur de lissage ; et un circuit de protection pour bloquer un flux de courant dans un chemin lorsque le condensateur de lissage est en court-circuit, le circuit de protection étant formé sur le chemin incluant la borne d'entrée, le condensateur de lissage et la borne de sortie.
PCT/KR2014/003506 2013-08-20 2014-04-22 Lampe à led WO2015026045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0098250 2013-08-20
KR1020130098250A KR101747845B1 (ko) 2013-08-20 2013-08-20 Led 램프

Publications (1)

Publication Number Publication Date
WO2015026045A1 true WO2015026045A1 (fr) 2015-02-26

Family

ID=52483796

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/003506 WO2015026045A1 (fr) 2013-08-20 2014-04-22 Lampe à led

Country Status (2)

Country Link
KR (1) KR101747845B1 (fr)
WO (1) WO2015026045A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009128654A2 (fr) * 2008-04-17 2009-10-22 (주)파워에이앤디 Appareil comprenant un circuit de commande de charge identique pour la commande d'une pluralité d'éclairages à del
JP2010177059A (ja) * 2009-01-29 2010-08-12 Kyokko Denki Kk Ｌｅｄ駆動回路及びそれを用いたｌｅｄ照明装置
WO2012026672A1 (fr) * 2010-08-26 2012-03-01 Kim Seong-Yoon Circuit stabilisateur pour éclairage à del
KR20120080098A (ko) * 2011-01-06 2012-07-16 지상시스템(주) 정전류 제어 기능을 구비한 발광다이오드 조명용 스위칭-모드 전원공급장치
KR20130069516A (ko) * 2011-12-16 2013-06-26 서울반도체 주식회사 Ｌｅｄ 구동장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009128654A2 (fr) * 2008-04-17 2009-10-22 (주)파워에이앤디 Appareil comprenant un circuit de commande de charge identique pour la commande d'une pluralité d'éclairages à del
JP2010177059A (ja) * 2009-01-29 2010-08-12 Kyokko Denki Kk Ｌｅｄ駆動回路及びそれを用いたｌｅｄ照明装置
WO2012026672A1 (fr) * 2010-08-26 2012-03-01 Kim Seong-Yoon Circuit stabilisateur pour éclairage à del
KR20120080098A (ko) * 2011-01-06 2012-07-16 지상시스템(주) 정전류 제어 기능을 구비한 발광다이오드 조명용 스위칭-모드 전원공급장치
KR20130069516A (ko) * 2011-12-16 2013-06-26 서울반도체 주식회사 Ｌｅｄ 구동장치

Also Published As

Publication number Publication date
KR20150021208A (ko) 2015-03-02
KR101747845B1 (ko) 2017-06-15

Similar Documents

Publication Publication Date Title
US9426849B2 (en) Connection circuit for connecting a driver to an external power supply for driving an LED unit
US9338853B2 (en) LED tube driver circuitry for ballast and non-ballast fluorescent tube replacement
CA2861789C (fr) Circuit d'attaque de tube a del pour remplacement par des tubes fluorescents a ballast et sans ballast
JP6356688B2 (ja) レトロフィット発光ダイオード管
US9967927B2 (en) Linear solid-state lighting with galvanic isolation
US20120313540A1 (en) Light emitting apparatus
WO2011155712A2 (fr) Lampe fluorescente à del de type à ballast électronique
KR20140105658A (ko) 안정기를 이용한 ｌｅｄ 조명 장치
JP2016530670A (ja) 電磁バラストによる安全な動作のためのｌｅｄ置換えランプ
KR101246940B1 (ko) 엘이디 램프
CN112512180A (zh) 可满足emc要求的dmx512控制电路
JP6502375B2 (ja) 蛍光灯互換タイプのｌｅｄ照明装置とそのための感電保護装置
US9967947B1 (en) LED driving circuit for controlling leakage current and compatible with ballast
EP2702830A1 (fr) Connecteur pourvu d'une structure de protection contre les surtensions
US10959309B2 (en) LED lamp protection circuit
WO2019231284A1 (fr) Dispositif de commande de del compatible et procédé utilisant un ballast de lampe fluorescente
US20160234909A1 (en) Led lamp
WO2016003055A1 (fr) Dispositif de commande de lampe à del
WO2015026045A1 (fr) Lampe à led
KR101784857B1 (ko) 서클, fpl, 형광등 안정기 호환형 led 램프의 구동장치
JP7178068B2 (ja) 感電防止保護機能を有し、多様な電流安定供給モードに対応する照明器具
US9750094B1 (en) Energy saving under-cabinet lighting system using light emitting diodes with a USB port
EP4152894A1 (fr) Appareil de commande de gradation à commande de silicium linéaire pour lampe à del
KR101386143B1 (ko) Ｌｅｄ 조명등용 전원 공급 장치 및 그 방법과 그를 이용한 ｌｅｄ 조명 장치
KR20140049841A (ko) Ｌｅｄ 조명등용 전원 공급 장치 및 그 방법과 그를 이용한 ｌｅｄ 조명 장치

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14838678

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 14838678

Country of ref document: EP

Kind code of ref document: A1