| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To keep the display screen of a liquid crystal display device mounted on a game board of a game machine clean without needing any labor. <P>SOLUTION: The liquid crystal display device 7 is mounted on a frame member 17 on the game board. A cleaning member 27 with a brush 29 is mounted on the frame member 17. A stain detector 25 comprises a light emitting element 25a and a light receiving element 25b for detecting the stain on the liquid crystal display screen 7a. When the stain is detected, the cleaning member 27 is rotated around a turning shaft 28 by the driving of a motor. The brush 29 slides on the liquid crystal display screen 7a and removes the stain adhering to the liquid crystal display screen 7a. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
