To provide a control circuit of a light source that is increased in number of light emitting elements capable of being connected in series without increasing component cost, and a vehicle lamp using the same.SOLUTION: A control unit 2 controlling turn on/off of a light source 1 that includes a plurality of light emitting elements 41-47 connected in series includes a control circuit that controls such that, when N represents the number of the plurality of light emitting elements and current is flown simultaneously to (N-1) or less of light emitting elements among the plurality of light emitting elements, current is not substantially flown to at least one light emitting element.SELECTED DRAWING: Figure 4
【課題】部品コストを増大させることなく直列に接続可能な発光素子の数を増やした光源の制御回路及びそれを使用する車両用灯具を提供する。【解決手段】直列に接続された複数の発光素子41〜47を備える光源1の点消灯を制御する制御装置2は、複数の発光素子の数をN個とした場合、当該複数の発光素子のうち(N−1)個以下の発光素子に対して同時に電流を流す際に、少なくとも1個の発光素子に対して実質的に電流を流さないように制御する制御回路を有する。【選択図】図4
LIGHT SOURCE CONTROL UNIT AND VEHICLE LAMP
光源の制御回路、車両用灯具
2019-04-11
Patent
Electronic Resource
Japanese
IPC: | H05B ELECTRIC HEATING , Elektrische Heizung / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
LIGHT SOURCE UNIT AND VEHICLE FRONT LAMP USING THE LIGHT SOURCE UNIT
European Patent Office | 2018
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