| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a game machine capable of detecting fraudulent act using a magnet almost in the whole region of a playfield inexpensively without complicating the structure of a game board. <P>SOLUTION: The game machine 1 includes: a game board 20 having an almost circular playfield 21 where game balls are hit; a frame member 3 which is located at a front face side of the game board 20 and has a window part 5 through which the playfield 21 is visible; a coil 14 which is provided for the frame member 3 and is wound along the periphery of the playfield 21; and a fraudulence detection part 52 for detecting the fault play on the basis of an induced electromotive force occurring in the coil 14. The coil 14 is preferably attached to an inside or a back surface side of the frame member 3. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
