PROBLEM TO BE SOLVED: To provide a lighting circuit capable of suppressing deterioration of a relay.SOLUTION: A driving circuit 414 supplies a driving current to a second light source 304. A dummy load circuit 450 is connected to a control line 434 to which a lighting control signal instructing on/off of the second light source 304 is input, and a dummy load current Ithat decreases as the temperature increases sinks.SELECTED DRAWING: Figure 2

    【課題】リレーの劣化を抑制可能な点灯回路を提供する。【解決手段】駆動回路414は、第2光源304に駆動電流を供給する。ダミー負荷回路450は、第2光源304のオン、オフを指示する点灯制御信号が入力される制御ライン434に接続され、温度が高くなると減少するダミー負荷電流IDUMMYLOADをシンクする。【選択図】図2


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    Title :

    LIGHTING CIRCUIT AND VEHICULAR LAMP


    Additional title:

    点灯回路および車両用灯具


    Contributors:

    Publication date :

    2018-10-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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




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