| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of appropriately protecting fraudulent act without reducing an empty space at the back of a game panel uselessly. SOLUTION: The game machine is equipped with a ball entering device comprising: a rotation induction body; an object 100, rotation of which is to be detected, formed with a slit (light passage part) 100W; and a position detection sensor device 110 which is equipped with a detection execution part having a light emitting part 112 and a light reception part 113 facing each other with the object 100 in between and which outputs a specific detection signal when light emitted by the light emission part 112 is received by the light reception part 113. The detection execution part and the like displace with reference to the game panel to change relative positions of the object 100 and the detection execution part. Along with this change, the light emitting part 112 and the light receiving part 113 can face each other outside the object 100. When a cycle at which output of a specific detection signal is executed deviates a cyclic appropriate value, a notification signal issuing means issues a notification signal. COPYRIGHT: (C)2009,JPO&INPIT
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