| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine that can suppress occurrence of a situation with erroneous detection by a detection part that detects the presence of a substance.SOLUTION: An optical axis H2 of a motion sensor 172 is inclined to a transparent plate 159 by an angle α relative to a virtual line V extending parallel to an outer surface 159a of the transparent plate 159. In contrast, an optical axis H3 of a motion sensor 173 is inclined to a side (player side) opposite to the transparent plate 159 by an angle &bgr; relative to the virtual line V. A light receiving/emitting surface 54b of the motion sensor 173 is arranged to oppose an upper surface 167a of a tray unit 167. Therefore, in order to prevent infrared light emitted from the motion sensor 173 from being reflected on the upper surface 167a of the tray unit 167 and returned to the light receiving/emitting surface 54b, the motion sensor 173 is installed in such a manner that the optical axis H3 of the motion sensor 173 is kept away from the outer surface 159a of the transparent plate 159. |
