| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently prevent an illegal act using an illegal ball referred to a line ball, in a game machine including a winning hole into which a game ball flowing down in a game region partitioned and formed on the surface of a game board can win, a ball flow-down path making the game ball having won in the winning hole flow down, and a ball detection sensor that can detect the game ball flowing down through the ball flow-down path. <P>SOLUTION: In this game machine, a ball detection passage part 740 of the ball detection sensor 611 having a width that can be passed by a game ball and detect the passed game ball is disposed such that the ball detection passage part 740 faces the ball flow-down path (a ball confluence flow-down path 725), The game machine includes a small width region 741 set with a width of a flow passage which allows at least passage of a game ball and is smaller than the width of the ball detection passage part 740, on the upstream side of the ball detection passage part 740 in the ball flow-down path. <P>COPYRIGHT: (C)2013,JPO&INPIT |
