When a power supply voltage is supplied to an input terminal, a first constant current driver supplies a first driving current to the anode of a first semiconductor light source. A first switch is provided between the first semiconductor light source and a second semiconductor light source, and a second switch between the first semiconductor light source and a third semiconductor light source. When a switching terminal has a high impedance or low level, a switching circuit turns the first switch on and the second switch off. When a switching voltage is supplied to the switching terminal, the switching circuit turns the first switch off and the second switch on, and supplies a second driving voltage smaller than the first driving current to the second semiconductor light source.


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    Title :

    AUTOMOTIVE LAMP


    Contributors:

    Publication date :

    2024-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H05B ELECTRIC HEATING , Elektrische Heizung



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