| 摘要 |
PROBLEM TO BE SOLVED: To provide a game ball position detector with improved versatility by making it possible to easily cope even with the center accessory of a different structure. SOLUTION: In the game machine, on the front surface of an image display fixed to a game board, a space where a game ball enters and the game ball is moved by a game ball guiding device or the like is formed by a center accessory. For a sensor unit 75 for detecting the position of the game ball in the space, many light-emitting elements 73 and light-receiving elements 74 are disposed on a rectangular substrate 72 having a hollow part, and the position of the game ball is detected by performing scanning in a grid shape in a planar scanning area Sa inside the space. By disposing an interval setting mechanism 80 capable of freely setting an interval d1 between the substrate 72 and a transparent plate 70 protecting the front surface of the image display to the sensor unit 75, even for the game machine having the different structure of the center accessory, the position of the scanning area Sa can be easily set and the versatility of the sensor unit 75 is improved. COPYRIGHT: (C)2009,JPO&INPIT
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