A lighting circuit applied to a vehicle lighting tool includes: a power supply line to which power supply voltage is supplied in a first period of time out of a predetermined cycle including the first period of time and a second period of time, the supply of the power supply voltage being stopped in the second period of time; a regulator that supplies driving current to a light source based on the power supply voltage across the power supply line; a detection circuit that detects whether there is an abnormality in the light source; a signal output circuit that operates based on the power supply voltage across the power supply line and outputs a signal according to a detection result of the detection circuit; and a control circuit that stops an operation of the regulator when the signal indicating that there is an abnormality in the light source is output.


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    Titel :

    LIGHTING CIRCUIT AND VEHICLE LIGHTING TOOL


    Beteiligte:
    OGO SUSUMU (Autor:in) / OHTA SHINJI (Autor:in)

    Erscheinungsdatum :

    13.02.2025


    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



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