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1. WO2016135814 - LED DRIVE CIRCUIT

Publication Number WO/2016/135814
Publication Date 01.09.2016
International Application No. PCT/JP2015/054966
International Filing Date 23.02.2015
Chapter 2 Demand Filed 30.09.2015
IPC
H05B 37/02 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37Circuit arrangements for electric light sources in general
02Controlling
CPC
B62J 6/01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
6Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
01Electric circuits
B62J 6/02
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
6Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
02Headlights
B62J 6/165
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
6Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
16Arrangement of switches
165Wireless switches
F21Y 2101/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING 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
2101Point-like light sources
H05B 45/37
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
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
Applicants
  • 新電元工業株式会社 SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. [JP]/[JP]
Inventors
  • 大城 勲 OHKI Isao
Agents
  • 勝沼 宏仁 KATSUNUMA Hirohito
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LED DRIVE CIRCUIT
(FR) CIRCUIT D’ATTAQUE DE DEL
(JA) LED駆動回路
Abstract
(EN)
This LED drive circuit is provided with: a first terminal to which one end side of a switch device current path is connected; a second terminal to which the other end side of the switch device current path is connected, wherein the switch device and a battery are connected in series between the first terminal and said second terminal; a detection circuit that periodically detects a current flowing in the first terminal and outputs, from a first node, a detection signal corresponding to a detection result; a comparison circuit that compares a detected voltage, which corresponds to the detection signal, and a threshold voltage, and outputs a comparison result signal corresponding to a comparison result; and a control circuit that controls the current detection operation of the detection circuit and controls the driving of an LED lamp on the basis of the comparison result signal.
(FR)
La présente invention concerne un circuit d’attaque de DEL qui comporte : une première borne, à laquelle est connecté un côté d’extrémité d’un chemin de courant de dispositif commutateur ; une seconde borne, à laquelle est connecté l’autre côté d’extrémité du chemin de courant de dispositif commutateur, le dispositif commutateur et une batterie étant connectés en série entre la première borne et ladite seconde borne ; un circuit de détection qui détecte périodiquement un courant circulant dans la première borne et qui émet, depuis un premier nœud, un signal de détection correspondant à un résultat de détection ; un circuit de comparaison qui compare une tension détectée, laquelle correspond au signal de détection, à une tension de seuil, et qui émet un signal de résultat de comparaison correspondant à un résultat de comparaison ; et un circuit de commande qui commande l’opération de détection de courant du circuit de détection et qui commande l’attaque d’une lampe à DEL sur la base du signal de résultat de comparaison.
(JA)
 LED駆動回路は、スイッチ装置の電流経路の一端側が接続される第1の端子と、スイッチ装置の電流経路の他端側が接続される第2の端子であって、第1の端子と第2の端子との間でスイッチ装置とバッテリとが直列に接続される第2の端子と、第1の端子に流れる電流を周期的に検出し、この検出結果に応じた検出信号を第1ノードから出力する検出回路と、検出信号に応じた検出電圧と、閾値電圧とを比較し、この比較結果に応じた比較結果信号を出力する比較回路と、検出回路の電流の検出動作を制御するとともに、比較結果信号に基づいて、LEDランプの駆動を制御する制御回路と、を備える。
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