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1. WO2020184947 - LIGHT SOURCE DRIVING DEVICE

Publication Number WO/2020/184947
Publication Date 17.09.2020
International Application No. PCT/KR2020/003295
International Filing Date 10.03.2020
IPC
H05B 45/50 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
H05B 47/20 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
20Responsive to malfunctions or to light source life; for protection
H05B 45/48 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
40Details of LED load circuits
44with an active control inside an LED matrix
48having LEDs organised in strings and incorporating parallel shunting devices
CPC
H05B 33/08
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
02Details
08Circuit arrangements for operating electroluminescent light sources
H05B 45/00
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
H05B 45/48
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
48having LEDs organised in strings and incorporating parallel shunting devices
H05B 45/50
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
H05B 47/20
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
20Responsive to malfunctions or to light source life; for protection
Applicants
  • 엘지이노텍 주식회사 LG INNOTEK CO., LTD. [KR]/[KR]
Inventors
  • 김준승 KIM, Jun Seong
Agents
  • 허용록 HAW, Yong Noke
Priority Data
10-2019-002797012.03.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) LIGHT SOURCE DRIVING DEVICE
(FR) DISPOSITIF D'ATTAQUE DE SOURCE DE LUMIÈRE
(KO) 광원 구동장치
Abstract
(EN)
A light source driving device performs a switching control on a third switch of a second control unit by using a control signal of a fourth control unit (overvoltage protection circuit), so as to allow the third switch to be turned on by the control signal of the fourth control unit only in a partial section in which an overvoltage occurs, and then turns off the third switch, thereby rapidly releasing the blocking of light emission from the light source so as to be capable of returning to a light emitting state.
(FR)
La présente invention concerne un dispositif d'attaque de source de lumière qui effectue une commande de commutation sur un troisième commutateur d'une seconde unité de commande à l'aide d'un signal de commande d'une quatrième unité de commande (circuit de protection contre les surtensions), de manière à permettre au troisième commutateur d'être allumé par le signal de commande de la quatrième unité de commande uniquement dans une section partielle dans laquelle se produit une surtension, puis éteint le troisième commutateur, libérant ainsi rapidement le blocage de l'émission de lumière à partir de la source de lumière de façon à pouvoir revenir à un état d'émission de lumière.
(KO)
광원 구동장치는 제4 제어부(과전압 보호회로)의 제어신호를 이용하여 제2 제어부의 제3 스위치를 스위칭 제어하여, 과전압이 발생되는 일부 구간에서만 제4 제어부의 제어신호에 제3 스위치를 턴온되고, 이후에는 제3 스위치를 턴오프시켜, 광원의 발광의 차단을 신속히 해제하여 발광 상태로 복귀되도록 할 수 있다.
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