To provide a pointer light-emitting device capable of suppressing luminance irregularities on a light-emitting surface.SOLUTION: An annular rib 311C is provided between a first holding part 31 for holding an emission axis part 71 and a second holding part 32 for holding a light introduction axis part 21, and a corner of the light introduction axis part 21 is covered, thus preventing light from easily entering a pointer body 2 from the corner of the light introduction axis part 21, and preventing stray light from occurring easily and suppressing luminance irregularities. Since an upper surface in a side of the light introduction axis part 21 in the annular rib 311C is has a larger radius of curvature than that of the corner of the light introduction axis part 21 and is formed in a tapered shape, the corner can be covered easily in a state in which the light introduction axis part 21 is separated from the annular rib 311C.SELECTED DRAWING: Figure 8
【課題】発光面における輝度ムラを抑制することができる指針発光装置を提供する。【解決手段】出射軸部71を保持する第1保持部31と、光導入軸部21を保持する第2保持部32と、の間に環状リブ311Cが設けられて光導入軸部21の角部が覆われていることで、光導入軸部21の角部から指針本体2内に光が入射しにくく、迷光を生じにくくして輝度ムラを抑制することができる。環状リブ311Cにおける光導入軸部21側の上面が、光導入軸部21の角部よりも大きい曲率半径を有してテーパ状に形成されていることで、光導入軸部21と環状リブ311Cとを離隔させた状態において角部を覆いやすくすることができる。【選択図】図8
POINTER LIGHT-EMITTING DEVICE
指針発光装置
22.02.2021
Patent
Elektronische Ressource
Japanisch
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 / G09F DISPLAYING , Anzeigewesen |
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