PROBLEM TO BE SOLVED: To allow a current supply device to properly perform temperature derating.SOLUTION: A light source drive device includes a current supply device and a light source device. The light source device includes a light emitting element that emits light by receiving a drive current supplied from the current supply device, a temperature sensor that performs temperature detection at a position closer to the light emitting element than the current supply device, and a signal generation unit that outputs a control signal for controlling the drive current depending on a detected value of the temperature sensor to the current supply device. The signal generation unit generates a control signal for reducing the drive current depending on a temperature when the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature.SELECTED DRAWING: Figure 1

    【課題】電流供給装置が温度ディレーティングを適切に実行できるようにする。【解決手段】電流供給装置と光源装置とを備える。光源装置は電流供給装置から駆動電流の供給をうけて発光する発光素子と、電流供給装置よりも発光素子に近い位置で温度検出を行う温度センサと、温度センサの検出値に応じて駆動電流を制御するための制御信号を電流供給装置に出力する信号生成部とを有する。そして信号生成部は、温度センサにより検出された温度が所定温度以上の場合に、駆動電流を温度に応じて低減させる制御信号を生成するようにする。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    LIGHT SOURCE DRIVE DEVICE AND VEHICLE LAMP


    Additional title:

    光源駆動装置、車両用灯具


    Contributors:
    OTA SHINJI (author) / FUKUDA KATSUYA (author)

    Publication date :

    2018-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / H05B ELECTRIC HEATING , Elektrische Heizung



    LIGHT EMISSION DRIVE DEVICE AND VEHICLE LAMP

    MATSUI KOTARO / NOYORI YASUSHI | European Patent Office | 2018

    Free access

    Light emission drive device and vehicle lamp

    MATSUI KOTARO / NOYORI YASUSHI | European Patent Office | 2019

    Free access

    LIGHT SOURCE UNIT FOR VEHICLE LAMP, VEHICLE LAMP

    MATSUOKA KENJI | European Patent Office | 2022

    Free access

    LIGHT SOURCE UNIT FOR VEHICLE LAMP, VEHICLE LAMP

    MATSUOKA KENJI | European Patent Office | 2024

    Free access

    LIGHT SOURCE DEVICE AND VEHICLE LAMP

    SHIDO MASAYA | European Patent Office | 2017

    Free access