| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure performance areas and playing areas. SOLUTION: A game performance unit installing recessed part 30 is a recess formed in the body frame 3 which has the right and left sides and the rear part of the upper side surrounded by the first peripheral wall 290, the second peripheral wall 291, the third peripheral wall 292 and the fourth peripheral wall 293. The first peripheral wall 290 has its internal side on the pivoted side, a flange face part on its upper side part, the flange face part on its opening side and the internal side of its lower side part and is peripherally built cylindrical backward from them. In addition, the second peripheral wall 291 is extended backward from the first peripheral wall 290, the third peripheral wall 292 from the second peripheral wall 291, the fourth peripheral wall 293 from the third peripheral wall 292. COPYRIGHT: (C)2009,JPO&INPIT
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