| 摘要 |
PROBLEM TO BE SOLVED: To prevent a illegal behavior carried out after opening a door of a game machine. SOLUTION: The game machine provided with a casing and the door provided at the casing in an openable and closable state is provided with: rails (151a and 151b) surrounding the door 130; and rails (150a and 150b) surrounding the opening of the casing 120. At the rails 150a and 150b, light-receiving parts S-Ra and S-Rb of a door-opening detection sensor S for detecting opening of the door 130 are provided movably. At the rails 151a and 151b, light-emitting parts S-Ta and S-Tb of the sensor S are provided movably. By properly changing the position of the sensor, illegal behaviors such as working to the sensor and devices for them are invalidated. COPYRIGHT: (C)2006,JPO&NCIPI
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