| 摘要 |
PROBLEM TO BE SOLVED: To accurately and stably put out game balls in a pachinko game machine 1 while improving the efficiency of the maintenance work of the pachinko game machine 1. SOLUTION: The pachinko game machine 1 has a ball put-out case 22 which is provided under a ball tank and which has ball passages inside for guiding game balls from the ball tank side to an outlet side. The ball put-out case 22 is transparent at least partly so that the inside of the ball passages 28 and 29 is visible from outside. A modulation/demodulation photosensor 35 disposed inside the ball put-out case 22 has a light emitting part 37 and a light receiving part 38 which are disposed in such a way that the ball passages 28 and 29 are located between the parts, and a light shading plate 25 is disposed between the light emitting part 37 and the light receiving part 38. The light shading plate 25 has an aperture 39 through which the light B emitted from the light emitting part 37 can pass, and at least the area around the peripheral edge of the aperture 39 is opaque. COPYRIGHT: (C)2007,JPO&INPIT
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