PROBLEM TO BE SOLVED: To provide a needle and a meter, in which an angle of a reflecting surface in an extension direction of the needle can be reduced without increasing light transmitted through the reflecting surface.SOLUTION: A needle 5 includes: a light incidence surface 15 on which illumination light supplied from the rear side of the needle 5 impinges; a reflecting surface 16 which reflects the illumination light entering the inside of the needle 5 via the light incidence surface 15, toward a front end part 7 of the needle 5 in an extension direction of the needle; and a light emission surface 17 which is formed on the front side of the needle 5 to emit the illumination light reflected by the reflecting surface 16. The light incidence surface 15 includes a plane 18 which refracts the illumination light so as to cause the illumination light to impinge on the reflecting surface 16 at an angle equal to or larger than a critical angle and is inclined at a prescribed angle to the extension direction of the needle 5.
【課題】反射面での透過光を増加させずに、指針の延在方向に対する反射面の角度を倒すことを可能にする指針及びこの指示計器を提供する。【解決手段】指針5の裏面側から供給される照明光が入射する入光面15と、入光面15を通じて指針5の内部へと進入する照明光を指針の延在方向において指針5の先端部7側に反射する反射面16と、指針5の表面側に形成されて、前記反射面16で反射された照明光を放出する発光面17と、を備え、入光面15は、照明光が反射面16に臨界角以上の角度で入射するように、照明光を屈折させる、指針5の延在方向に対して所定角度傾斜する平面18を備える。【選択図】図1
NEEDLE AND METER
指針及び指示計器
2015-06-08
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 |
Needle attaching structure of rotating shaft and meter device
European Patent Office | 2018
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