PROBLEM TO BE SOLVED: To make brightness uniform irrespective of the angle of rotation of a pointer.SOLUTION: When light emitted from a plurality of light sources for pointer lighting 30 (30a, 30b, and 30c) and has entered the inside of a pointer 10 from a light receiving part 15 (light incident part) lights the pointer 10, on the basis of the angle of rotation θ of the pointer 10 on a dial 20 calculated by a pointer rotation angle calculation part 40, a light source emission control part 60 controls the light emission state of the plurality of light sources for pointer lighting 30 (30a, 30b, and 30c) so that the intensity of the light entering the inside of the pointer 10 becomes constant irrespective of the angle of rotation θ of the pointer 10.
【課題】指針の回動角度によらずに、輝度を均一にする。【解決手段】複数の指針照明用光源30(30a,30b,30c)から出射して受光部15(光入射部)から指針10の内部に入射した光が指針10を照明する際に、指針回動角度算出部40で算出した、文字盤20上における指針10の回動角度θに基づいて、光源発光制御部60が、複数の指針照明用光源30(30a,30b,30c)の発光状態を、指針10の回動角度θによらずに指針10の内部に入射する光の量が一定となるように制御する。【選択図】図4
DEVICE FOR LIGHTING POINTER OF METER FOR VEHICLE
車両用計器の指針照明装置
2016-01-07
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 |