| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a fraudulent act on a game machine such as a Pachinko machine.SOLUTION: A special pattern display device is mounted roughly at the center of the game board of a Pachinko machine 1 and a prize-winning start unit is mounted at the lower part of the game board. The prize-winning start unit includes a lower prize-winning part and an upper prize-winning part. Various play conditions are introduced when a game ball gets into the lower prize-winning part or the upper prize-winning part. The lower prize-winning part includes a solenoid, a pair of blades, and a solenoid arm to transmit the driving of the solenoid to each blade. The blades rotate in connection with the driving of the solenoid. Normally, the rotation of the solenoid arm is controlled by the plunger of the solenoid to be difficult to rotate and accordingly the rotation of the blades is also controlled.</p> |
