PROBLEM TO BE SOLVED: To reduce luminance unevenness of a pointer.SOLUTION: When light emitted from a light source 60 is made incident to the inside of a pointer 20 from a light incident part 33 provided at a base end part 36 and light reflected on a reflection surface 34 is guided inside a pointer body part 30, part of the guided light is emitted from a pointer upper surface 40 to the outside and the remaining light is guided to the tip end of the pointer 20 while repeating reflection between the pointer upper surface 40 and a pointer lower part 42. At this time, an outside surface of a borderline region between the pointer body part 30 and the base end part 36 is embossed to suppress concentration of light to the borderline region.SELECTED DRAWING: Figure 5A
【課題】指針の輝度むらを低減する。【解決手段】光源60から出射した光を基端部36に備えられた光入射部33から指針20の内部に入射させて、反射面34で反射させた光を指針本体部30の内部で導光させる際に、導光させた光の一部は、指針上面部40から外部に出射させて、残りの光は、指針上面部40と指針下面部42の間で反射を繰り返しながら、指針20の先端に向けて導光させる。このとき、指針本体部30と基端部36の境界領域の外表面にシボを形成して、境界領域への光の集中を抑制する。【選択図】図5A
POINTER STRUCTURE OF VEHICULAR MEASURING INSTRUMENT
車両用計器の指針構造
2016-08-08
Patent
Electronic Resource
Japanese
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 |