PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of properly dealing with light leakage abnormality.SOLUTION: A light source 10 includes a laser diode 12. A lighting circuit supplies a stabilized lamp current Ito the laser diode 12 in a normal state. An abnormality detector 40 detects one part of output light 24 of the light source 10, and when the abnormality of the output light 24 is detected, asserts an abnormality detection signal S1. A protection device 50, in response to the assertion of the abnormality detection signal S1, acts on the output light 24 of the light source 10, and lowers the density of light 25 emitted from a vehicular lighting fixture 1.SELECTED DRAWING: Figure 3

    【課題】漏光異常に対し適切に対処可能な車両用灯具を提供する。【解決手段】光源10は、レーザダイオード12を含む。点灯回路は、正常状態において、レーザダイオード12に安定化されたランプ電流ILAMPを供給する。異常検出器40は、光源10の出力光24の一部を検出し、出力光24の異常を検出すると、異常検出信号S1をアサートする。保護装置50は、異常検出信号S1のアサートに応答して、光源10の出力光24に作用し、車両用灯具1から出射する光25の密度を低下させる。【選択図】図3


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    Title :

    LIGHTING FIXTURE


    Additional title:

    灯具


    Contributors:

    Publication date :

    2018-01-18


    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




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