| 摘要 |
PROBLEM TO BE SOLVED: To provide an accessory device for a Pachinko machine which has improved interest by giving unpredictably irregular changes to a movement of a game ball until it enters a special prize winning port. SOLUTION: An accessory device 9 disposed at a center part in a game area 8 is provided with: an empty chamber part 9a divided from the game area 8; a guide passage 14 for linking the empty chamber part 9a and the game area 8; an upper part sheet 15 and a lower part sheet 17 disposed in opposition to each other inside the empty chamber part 9a via a three-dimensional space part 16; and a special prize winning port 20 provided around the lower part sheet 17. After the game ball flowing into the empty chamber part 9a is fallen into the three-dimensional space part 16 from the guide passage 14, the game ball enters the special prize port 20 while irregularly bouncing on an upper surface of the lower part sheet 17, like on the trampoline. COPYRIGHT: (C)2008,JPO&INPIT
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