PROBLEM TO BE SOLVED: To change positions of two sides at which light distribution patterns oppose each other by using a movable shade, and to form a variety of light distribution patterns.SOLUTION: An LED array 23, a heat dissipation base 4 and a reflector 5 are arranged at a light source unit 22 of a vehicle headlamp 21. A movable shade 7 is arranged between a projection lens 6 for projecting illumination light and the LED array 23, and the movable shade is ascended and descended by an actuator 8. A lateral-U shape shading part 11 and a light permeation part 12 are arranged at the movable shade 7. A vertical pair of edges 13, 14 are formed at the light permeation part 12 so as to oppose each other from a moving direction of the movable shade 7, and two sides at which light distribution patterns oppose each other are defined by the edges 13, 14. A control device 26 controls lighting and extinguishing lamps of a plurality of LED elements 24 and a moving amount of the movable shade 7 by the actuator 8 by making them associated with each other.

    【課題】 可動シェードを用いて、配光パターンの相対する二辺の位置を上下方向に変化させ、多様な配光パターンを形成する。【解決手段】 車両用前照灯21の光源ユニット22に、LEDアレイ23、放熱ベース4、リフレクタ5を設ける。照明光を投射する投射レンズ6とLEDアレイ23との間に可動シェード7を配置し、アクチュエータ8で昇降する。可動シェード7は、「コ」の字形の遮光部11と光通過部12を備える。光通過部12に上下一対のエッジ13,14を可動シェード7の移動方向から向き合うように形成し、エッジ13,14により配光パターンの相対する二辺を画定する。制御装置26は、複数のLED素子24の点消灯とアクチュエータ8による可動シェード7の移動量とを相互に関連付けて制御する。【選択図】 図5


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    Title :

    LIGHTING APPLIANCE HAVING MOVABLE SHADE


    Additional title:

    可動シェードを備えた灯具


    Contributors:

    Publication date :

    2015-06-25


    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



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