PROBLEM TO BE SOLVED: To install a plurality of light sources which uniformly illuminates a ring part around the dial plate and illuminates a light guide plate in a small space.SOLUTION: A ring part illumination guide light 60 (belt-like light guide) including a light guide main body 60f overlapping with a ring part 40 formed around a dial plate 20 of a speed meter 10a, and having a width W equal to the ring part 40 is curved so as to be isolated from the dial plate 20 with its end face directed to a rear face side of the dial plate 20. The width W forms a curved part 60g smoothly extending as approaching an end face 60d. The surface of the curved part 60g is formed so as to become a smooth convex surface toward the outside in a normal line direction, and causes light emitted from a light source 72 which is constituted of a plurality of LEDs 72a, 72b, and 72c arranged to be opposed to each other to enter the inside of the ring part illumination guide light 60, thereby illuminating the ring part.

    【課題】文字板周囲のリング部を均一に照明するとともに、小さなスペースに、導光板を照明するための複数の光源を設置する.【解決手段】速度計10aの文字板20の周囲に形成したリング部40と重なる、等しい幅Wを有する導光体本体60fを有するリング部照明用ガイドライト60(帯状導光体)を、その端面60dを文字板20の裏面側に向けて文字板20から離隔するように湾曲させて、端面60dに近づくにしたがって、幅Wが滑らかに広がる湾曲部60gをなし、湾曲部60gの表面が法線方向外側に向かって滑らかな凸面をなすように形成して、リング部照明用ガイドライト60の端面60dに対向する設置した複数のLED72a,72b,72cからなる光源72から出射した光を、リング部照明用ガイドライト60の内部に入射させてリング部を照明する。【選択図】図2


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    Titel :

    DIAL ILLUMINATION STRUCTURE


    Weitere Titelangaben:

    文字板照明構造


    Beteiligte:

    Erscheinungsdatum :

    2015-07-30


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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