A lighting circuit includes a voltage converter configured to receive a DC voltage to perform voltage conversion and supply a drive current to a light source unit including a light emitting element, a bypass switch configured to form a bypass path through which the drive current bypasses the light emitting element, and a controller configured to control the voltage converter and the bypass switch. The light source unit includes a plurality of light emitting elements connected in series. The bypass path includes at least one bypass switch which are connected in parallel with at least one of the light emitting elements. When turning on the light emitting element of the light source unit, the controller controls the voltage conversion to start in a state where the bypass switch is turned on, and then, turns off the bypass switch to turn on the light emitting element.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    LIGHTING CIRCUIT AND VEHICLE LAMP


    Beteiligte:
    TSUCHIYA TOSHIYUKI (Autor:in) / MURAMATSU TAKAO (Autor:in) / TODA TAKESHI (Autor:in)

    Erscheinungsdatum :

    03.01.2019


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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

    LIGHTING CIRCUIT AND VEHICLE LAMP

    MURAKAMI TAKUYA / YOSHIDA SHUNICHIRO | Europäisches Patentamt | 2019

    Freier Zugriff