| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional ball passage sensor whose case body is inevitably large, wherein the attaching position of the case is limited and the manufacturing of the case is costly. SOLUTION: The ball passage sensor 100 has a storage case 102 comprising a hall element 106, a permanent magnet 107 and a circuit board with a circuit for measuring the hall voltage generated in the hall element 106. The storage case 102 is formed in such a notched shape that the body of the storage case 102 does not reach the extension of the line connecting the centers of the permanent magnet 107 and the pachinko ball P passing a prescribed area of a game member and does not reach the extension of the line connecting the centers of the hall element 106 and the pachinko ball P passing the prescribed area of the game member. The passage of the pachinko ball P through the prescribed area of the game member is recognized by a main CPU 31 based on detection signals output from the ball passage sensor 100. COPYRIGHT: (C)2007,JPO&INPIT
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