| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination type operation button using a bright color such as white and yellow for a mask covering a material color and forming a character or a symbol. SOLUTION: An operation button 3 is formed with a resin material with a material color which is transparent or very close to transparent, and is provided with a mask 9 which is painted or vapor deposited on a surface except for a character part 8 provided with a character or a symbol to block light coming inside. A light diffusing material is mixed with the resin material, When a light source 5 is not off, the inside is covered with the mask 9 excluding the character part 8 provided with a character or a symbol, and is dark, and the part provided with a character or a symbol appears black in the daytime. A character and the like illuminated by the light source appears at night. Even when a bright color is used for the mask 9, the character part 8 is distinguishable from the mask, and a bright color can be applied to the mask.
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