| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine capable of protecting a performance button by advanceably/retreatably storing the performance button in a button case, and capable of reliably deterring a foreign object from impeding normal advance/retreat operation of the performance button by discharging the foreign object outside the button case when the foreign object enters a portion between a periphery part of the performance button and a peripheral wall of the button case in a performance button device.SOLUTION: A performance button device 9 includes a button case 50 including a peripheral wall 50a and a bottom wall 50b for advanceably/retreatably storing a performance button 40. The button case 50 includes a plurality of discharge ports 51-53 for discharging a foreign object between a periphery part of the performance button 40 and the peripheral wall 50a of the button case 50 to the outside of the button case 50. The plurality of discharge parts 51-53 are also used as air vents of a space surrounded by the performance button 40 and the button case 50 in advance/retreat of the performance button 40.</p> |
