| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine including a simple-structured and highly reliable device for detecting radio wave fraudulence. SOLUTION: The game machine includes a ball passage detecting part disposed on a game board for detecting passage of game balls, and is operated based on the detection of game balls by the ball passage detecting part. The game machine further includes a fraudulence detecting device 600 having: a ball passage detecting switch 610 and a ball passage detecting circuit 620 having the same structure and function as the ball passage detecting part; a metal body 632 to be detected by the ball passage detecting switch 610 and the ball passage detecting circuit 620; and an enclosing part 631 for holding the metal body 632 at a position where the metal body can be detected by the ball passage detecting switch 610 and the ball passage detecting circuit 620. The fraudulence detecting device recognizes an abnormal state from the disorder of output obtained from the ball passage detecting switch 610 and the all passage detecting circuit 620. COPYRIGHT: (C)2011,JPO&INPIT |
