To provide an efficient configuration for the application of performing light emissions of a first function and a second function in an exclusive manner.SOLUTION: In a light source, a first light-emitting part which performs a light emission of a first function and a second light-emitting part of which the maximum lighting voltage is set lower than a forward voltage of the first light-emitting part and which performs a light emission of a second function are connected in parallel. A lighting circuit comprises: a current supply part which supplies a drive current to the light source; a control part which performs stabilizing control of the drive current from the current supply part; a switch element which is provided so as to connect/disconnect a current path part which is a current path of the second light-emitting part and in parallel with a current path of the first light-emitting part; and a selection part which causes the switch element to connect the current path of the second light-emitting part when performing the light emission of the second function.SELECTED DRAWING: Figure 1

    【課題】第1機能と第2機能の発光を排他的に行う用途のための効率的な構成を提供する。【解決手段】光源は、第1機能の発光を行う第1発光部と、最大点灯電圧が第1発光部の順方向電圧より低くされ第2機能の発光を行う第2発光部とが並列に接続されている。点灯回路は、この光源に対して駆動電流を供給する電流供給部と、電流供給部からの駆動電流の安定化制御を行う制御部と、第2発光部の電流経路であって第1発光部の電流経路とは並列となっている経電流路部を断接するように設けられたスイッチ素子と、第2機能の発光を行う際にスイッチ素子により第2発光部の電流経路を接続させる選択部とを備えるようにする。【選択図】図1


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    Titel :

    LIGHTING CIRCUIT AND VEHICULAR LAMP


    Weitere Titelangaben:

    点灯回路、車両用灯具


    Beteiligte:
    MATSUI KOTARO (Autor:in) / SUGIYAMA TAKAO (Autor:in)

    Erscheinungsdatum :

    13.12.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    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 / H05B ELECTRIC HEATING , Elektrische Heizung




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