| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine adapted to keep a constant distance between a game board surface and a rear glass plate while preventing the intrusion of dust into a space between front and rear glass plates of a glass holding frame divided back and forth through an urging means. SOLUTION: A transparent plate unit 11 provided at a front frame 8 to cover the front face of a game board 5 includes a back and forth pair of annular holding frame bodies 16A, 16B provided with front and rear transparent plates 12A, 12B to block window parts 15, and the urging means 17 located between the front and rear holding frame bodies 16A, 16B to urge the front and rear holding frame bodies 16A, 16B in a separating direction. The inner surfaces of the front and rear holding frame bodies 16A, 16B are circumferentially provided with a recessed groove 32 and a protrusion 33 suitable for each other. The transparent plate unit 11 is adapted to abut on a regulating means in the closed state of the front frame 8 and to maintain a constant space between the game board and the rear transparent plate to fit the recessed groove 32 and the protrusion 33 to each other. COPYRIGHT: (C)2011,JPO&INPIT
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