| 摘要 |
PROBLEM TO BE SOLVED: To provide a big winning port or the like arranged on the front of a game board which is difficult to be influenced by the deformation of the game board member or the like and in which an opening door can smoothly open and shut over long periods and moreover the space between the upper edge of an opening and the open end side edge of the opening door can be narrow. SOLUTION: In an opening 131 of a base member 130 constituting a big winning port 13, an opening door 140 rotatably supported on the lower edge side of the opening 131 with the upper edge side of the opening 131 as an open end side is placed. In the edge on the open end side of the opening door 140, a first tilt face 141 with a backward descending tilt is formed, and even when the opening 131 is deformed, the opening door 140 is hard to be caught by the upper edge of the opening 131 when turning. COPYRIGHT: (C)2004,JPO
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