| 摘要 |
PROBLEM TO BE SOLVED: To emit the light uniformly from a light emitting source toward a direction of a certain range without increasing the size of a casing of an electronic apparatus. SOLUTION: The light from an LED4 which is the light emitting source is reflected by a reflection surface 7' provided with ruggedness, by which the light is no more reflected only to the specific direction and the light can be uniformly emitted to the direction of the certain range.
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