| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a button device for a game machine capable of exhibiting a sufficient performance effect without impairing operability. <P>SOLUTION: A chance button device 100 moves a projection lens 522b by means of a focus means composed of a lamp control board and piezoelectric linear actuators 523, 524 based on detection results of a magnetic sensor 525, and obtains images displayed on a screen surface 301e in focus by means of the projection lens 522b. In this state, the chance button device 100 projects the light of images displayed on a screen 511a of a liquid crystal display device 501 on the screen surface 301e of the button operation member 301 by means of the projection lens 522b to display the images on the screen surface 301e. The images displayed on the screen surface 301e are viewed by a player via a transparent operating portion 301b of the button operation member 301, thus exhibiting the sufficient performance effect. <P>COPYRIGHT: (C)2012,JPO&INPIT |
