| 摘要 |
PURPOSE:To obtain the device for excellently illuminating a pointer by introducing light from a bulb. CONSTITUTION:A pointer 12 composed of a transparent light introduction body is set under the condition that a rotary shaft 13 penetrates a central hole part of a circular indication dial 11. A first light introduction plate 17 composed of elliptic faces 171-174 on an outer circumferential face is arranged on the rear face of the dial 11, the rotary shaft is set at the focus position of the elliptic faces 171-174, and light from a light source bulb 18 is focused on the part of the rotary shaft 13 in order to be introduced by the painter 12. Here, a window for an odometor 15 is formed on the dial 11, a cut 19 is shaped on a first light introduction plate 17 corresponding to the window 15 and an elliptic division part is formed between the elliptic faces 171, 173. Therefor a second light introduction plate 20 is projected on the rear face of the first light introduction plate 17 and an elliptic face 201 corresponding to the elliptic division part is formed. |
