A lighting circuit turns on multiple semiconductor light sources. Multiple current sources are each coupled in series with a corresponding one from among the semiconductor light sources. A switching converter supplies a driving voltage VOUT across each of multiple series connection circuits formed of the multiple semiconductor light sources and the multiple current sources. A converter controller controls a switching transistor of the switching converter based on a relation between a voltage across one from among the multiple current sources and a reference voltage having a positive correlation with the temperature Tj.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    AUTOMOTIVE LAMP


    Beteiligte:

    Erscheinungsdatum :

    02.12.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H05B ELECTRIC HEATING , Elektrische Heizung / 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 / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES



    AUTOMOTIVE LAMP

    ICHIKAWA TOMOYUKI | Europäisches Patentamt | 2024

    Freier Zugriff

    AUTOMOTIVE LAMP

    MURAKAMI KENTAROU / UESUGI ATSUSHI / TSUCHIYA TOSHIYUKI | Europäisches Patentamt | 2022

    Freier Zugriff

    Automotive lamp

    KATO YASUYUKI / SATO YASUSHI / NORITAKE YUJI | Europäisches Patentamt | 2017

    Freier Zugriff

    Automotive Lamp

    Europäisches Patentamt | 2015

    Freier Zugriff

    Automotive lamp

    SON YOUNGHO / JI BYOUNGKI / HAN HYEJIN et al. | Europäisches Patentamt | 2018

    Freier Zugriff