To provide a lighting appliance for a vehicle that can reduce the manufacturing cost while preventing thermal damage to a lighting circuit.SOLUTION: A lighting appliance for a vehicle includes a lighting unit 5 having a light source 5a for emitting light, and a lighting circuit 4 for controlling lighting of the light source 5a. The lighting circuit 4 is to be freely detachably attached to the lighting circuit 4, and includes a heat radiating component 4a for diffusing heat generated in the lighting circuit 4, and a temperature detection element which is mounted in the lighting circuit 4 and detects the temperature of a mounting location of the lighting circuit 4 in a state where the heat radiating component 4a is mounted. When the ambient temperature of the lighting circuit 4 rises and the temperature of the mounting location detected by the temperature detection element reaches a suppression start temperature of output power of the lighting circuit 4, the output power is lowered. For the heat radiating component 4a, the heat radiating performance of the heat radiating component 4a is determined according to the suppression start temperature.SELECTED DRAWING: Figure 1

    【課題】点灯回路の熱破損を防ぎつつ、製品コストを低減することができる車両用灯具を提供する。【解決手段】車両用灯具は、光を出射する光源5aを有する点灯ユニット5と、光源5aの点灯を制御する点灯回路4と、を備える。点灯回路4は、点灯回路4に着脱自在に装着されるものであって、点灯回路4で生じた熱を拡散させる放熱部品4aと、点灯回路4に実装され、放熱部品4aが装着された状態において、点灯回路4の実装箇所の温度を検出する温度検出素子と、を備える。点灯回路4の周囲温度が上昇し、且つ温度検出素子により検出された実装箇所の温度が点灯回路4の出力電力の抑制開始温度に到達した場合、出力電力を下げるものである。放熱部品4aは、放熱部品4aの放熱性能が抑制開始温度に応じて決定されている。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    LIGHTING APPLIANCE FOR VEHICLE


    Additional title:

    車両用灯具


    Contributors:

    Publication date :

    2021-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / 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 LIGHTING APPLIANCE

    HAMASHIMA YOSHIHIKO | European Patent Office | 2015

    Free access

    VEHICLE LIGHTING APPLIANCE

    MIURA KAZUTO | European Patent Office | 2019

    Free access

    VEHICLE LIGHTING APPLIANCE

    SUN ZHUN | European Patent Office | 2016

    Free access

    VEHICLE LIGHTING APPLIANCE

    MIKUNI HIROYUKI | European Patent Office | 2016

    Free access

    LIGHTING APPLIANCE FOR VEHICLE

    SATO NORIKO | European Patent Office | 2017

    Free access