| 摘要 |
PROBLEM TO BE SOLVED: To perfectly do away with projection of a large prize hole from a game board rear face when installing the game board. SOLUTION: In this large prize hole, a shaft 45 fixed to an opening/closing door 9 of the large prize hole 1 is held by an rotating arm 48 of a rotary solenoid 46 having a nearly same width as a wall 61 from the side to rotate the opening/closing door 9 by the rotation of the arm 48. A sensor S1 of a continuous prize hole 20 is horizontally disposed, while sensors S2, S3 of general prize holes 21, 21' are disposed perpendicularly to inclined paths 50, 51. Thereby, a thickness of the large prize hole 1 is not more than a thickness of the game board 4. A plate forming the same plane as the game board 4 is abutted on the rear face of the game board 4.
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