To provide a vehicular headlight that can appropriately adjust illuminance of light generated by a light source in an environment irradiated with sunlight.SOLUTION: A vehicular headlight 100 comprises: a light source 10; a reflector 20 for reflecting light from the light source 10; a lens 30 comprising an incident surface 31 onto which the light reflected by the reflector 20 is incident, and an emitting surface 32 for emitting the light incident on the incident surface 31 to an irradiated region in front of a vehicle; and a lighting circuit 52 comprising a temperature sensor 51 for detecting a temperature, and an illuminance control unit for adjusting illuminance of the light from the light source 10 on the basis of a result detected by the temperature sensor 51, and in which the temperature sensor 51 is arranged at a position irradiated with sunlight incident from the emitting surface 32 of the lens 30 and emitted from the incident surface 31.SELECTED DRAWING: Figure 1

    【課題】太陽光が照射される環境において光源で生じる光の照度を適切に調整可能な車両用前照灯を提供する。【解決手段】車両用前照灯100は、光源10と、光源10からの光を反射するリフレクタ20と、リフレクタ20で反射された光が入射する入射面31と、入射面31に入射した光を車両前方の照射領域に出射する出射面32とを有するレンズ30と、温度を検出する温度センサ51と、温度センサ51による検出結果に基づいて光源10からの光の照度を調整する照度制御部とを有し、レンズ30の出射面32から入射して入射面31から出射された太陽光が照射される位置に温度センサ51が配置される点灯回路52とを備える。【選択図】図1


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    Title :

    VEHICULAR HEADLIGHT


    Additional title:

    車両用前照灯


    Contributors:
    SUZUKI EIJI (author)

    Publication date :

    2019-04-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen



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