| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball shooting passage capable of reliably preventing a fraudulent action using a ball with a string. ! SOLUTION: A ball shooting passage for guiding a ball that has been shot toward the game area of a game board includes: an outer guide rail arranged on the game board; an inner guide rail arranged closer to the game area than the outer guide rail; and a ball return prevention valve further extending toward the outer guide rail than the distal end of the inner guide rail. An inclination part inclining downward to the anterior part of the game board is arranged in the end part of the ball return prevention valve in the extension direction. The ball return prevention valve includes a portion higher than the projection height of components to be arranged on the game board with respect to the front surface of the game board concerning the projection height of the ball return prevention valve with respect to the front surface of the game board. ! COPYRIGHT: (C)2015,JPO&INPIT |
