| 摘要 |
PROBLEM TO BE SOLVED: To make compactly and precisely installable a pattern display device to a game board without causing any positional deviation by effectively using a space in a through hole in the game board and a vacant space behind the through hole. SOLUTION: In installation of a pattern display device to a game board 1, a front display unit 15 having a base frame 20 with a display window 24 is connected to a game board surface so as to be installed to the game board 1. In the pattern display device, a rear display unit 16 having a housing box 40 housing a pattern display body and a control circuit board is connected to the game board 1 via a prize ball guiding gutter 5 when the housing box 40 is connected to the prize ball guiding gutter 5 positioned and installed to the back face of the game board 1. The pattern display body is arranged behind the display window 24 when the rear display unit 16 is adjacently placed at the back of the display unit 15. |
