| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems caused by lighting a plurality of lighting parts with a single light source that uneven brightness in the lighting part is generated and brightness in each lighting part can not be uniform by slippage in the assembly of the device or the like. SOLUTION: Even if the position slippage of a light source 16 is produced, in the light guide route 6a near to the light source 16, the brighter light is reflected with a second reflecting surface 7a2, made reactive in a reflection reactive region 8a2, and does not reach the lighting part 4a, and in a light guide route 6b apart from the light source 16, light reflected with a second reflecting surface 7b2 is reflected with an inclined reflecting surface 8b1 and taken in the lighting part 4b. Therefore, the amount of light irradiated to the lighting parts 4a, 4b is made almost the same, and the difference of the brightness between the lighting parts 4a, 4b is eliminated.
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