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.


    Access

    Download


    Export, share and cite



    Title :

    AUTOMOTIVE LAMP


    Contributors:

    Publication date :

    2021-12-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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

    KIKUCHI SATOSHI / MURAKAMI KENTAROU / TSUCHIYA TOSHIYUKI et al. | European Patent Office | 2023

    Free access

    Automotive lamp

    LEE JUN HYUNG / CHOI GYEONG HO | European Patent Office | 2023

    Free access

    Automotive lamp

    SON YOUNGHO / JI BYOUNGKI / HAN HYE JIN et al. | European Patent Office | 2018

    Free access

    Automotive lamp

    SAKASHITA KAZUHISA / NORITAKE YUJI | European Patent Office | 2017

    Free access

    Automotive Lamp

    SCHICCHERI NICOLA / BUZZURRO ALESSANDRO | European Patent Office | 2016

    Free access