Each of a low beam lamp and a high beam lamp connected in series includes at least one light source. A lamp driving circuit is configured to supply current to each of the n lamps. A first voltage detecting circuit is configured to detect a first voltage that is a sum of voltages applied to each of the low beam lamp and the high beam lamp. A second voltage detecting circuit is configured to detect a second voltage that is applied to the high beam lamp. A processor is configured to obtain a difference between the first voltage and the second voltage, and to detect a failure in the low beam lamp based on comparison between the difference and a rewritable normal operation voltage of the low beam lamp.


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    Titel :

    Lamp failure detecting device, method for setting lamp failure detecting device, light source failure detecting device, method for setting light source failure detecting device, and lamp assembly


    Beteiligte:
    HARA YONOSUKE (Autor:in) / NAKAMURA TAKAAKI (Autor:in)

    Erscheinungsdatum :

    2020-11-24


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    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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