| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency in the replacing work of a game board and simplify the storage and maintenance of a non-exchanged board. SOLUTION: This back cover member 26 for covering and protecting the back side of a game part such as electric prize device arranged on the game board comprises vertically divided first cover member 28 and second cover member 30. The first cover member 28 located on the upper side is rotatably arranged on a back set member arranged on the back of the game board. The second cover member 30 located on the lower side is rotatably arranged on a mechanism set board G arranged on an inner frame. A power source device 32 provided with a power source substrate which requires no replacement in the replacement of the game board is arranged on the back side of the second cover member 30. COPYRIGHT: (C)2003,JPO
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