A lighting circuit which lights a semiconductor light source, the lighting circuit includes a drive circuit configured to receive a PWM signal from a controller, to generate a drive current to the semiconductor light source, and to switch the drive current according to the PWM signal. When a non-input state of the PWM signal exceeds a predetermined time, the lighting circuit is configured to assert an abnormality detection signal and to output the abnormality detection signal to the controller.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    LIGHTING CIRCUIT AND VEHICLE LAMP


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

    Erscheinungsdatum :

    01.02.2018


    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





    VEHICLE LAMP AND LIGHTING CIRCUIT

    ICHIKAWA TOMOYUKI / SUZUKI TETSUYA / OZAWA ATSUSHI et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Lighting circuit and vehicle lamp

    MURAKAMI TAKUYA / YOSHIDA SHUNICHIRO | Europäisches Patentamt | 2019

    Freier Zugriff

    Vehicle lamp and lighting circuit

    ICHIKAWA TOMOYUKI / ITO TORU / OZAWA ATSUSHI | Europäisches Patentamt | 2022

    Freier Zugriff