| 摘要 |
PROBLEM TO BE SOLVED: To illuminate the whole surface of an operating part and to reduce an arrangement space in a depth direction by using an electro-luminescence(EL) for a light source in an operation button having the light source to illuminate the operating part from a rear part. SOLUTION: The three kinds of BET buttons 19, that is, a 1BET button, the 2BET button and a max. BET button are arranged in a control panel under a display window of a slot machine and one, two or three medals are bet in one game by the depressing operation of each BET button 19. In this case, the respective BET buttons 19 are constituted by having a button cover 31 made of a translucent resin and colored in red, for example, on the front surface of a button main body 32. EL 33 is arranged and attached onto a holder 34 at a position facing the operation surface 31a of the button cover 31 and its energizing is controlled with a wire harness 35.
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