| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a mah-jongg ball game machine in constitution capable of substantially reducing the faults or the like of the most highly frequently used picked tile discarding button and reducing the exchange frequency of the entire button assy. as much as possible. <P>SOLUTION: In the mah-jongg ball game machine 10, a game is played in order to establish a winning role on the basis of the operation of a tile discarding operation part 36 on an operation panel 33 and the hitting of game balls onto a game board 22, and the tile discarding operation part 36 is provided with a plurality of tile discarding buttons 36a and a single picked tile discarding button 36b. The picked tile discarding button 36b is constituted so as to output ON/OFF signals on the basis of a photo-interrupter 88 operated corresponding to the operation. Thus, the faults of the most highly frequently used picked tile discarding button 36b are substantially reduced and the exchange frequency of the tile discarding operation part 36 is reduced as much as possible. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
