| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine having a high freedom degree of the radius of a convex lens part and providing novel optical patterns. SOLUTION: This Pachinko game machine 10 is disposed with a main plate wall 51 of an inner base 50 facing to an illumination circuit board 90 mounted with an LED chip 91, and an edge groove 57 is provided around a convex lens part 55 formed in the main plate wall 51, so as to provide the novel optical patterns including an optical ring along the edge groove 57. When the width dimension adding the main plate wall 51 and the convex lens part 55 is limited, this constitution can suppress the projecting amount of the convex lens part 55 from the main plate wall 51 to the side of the illumination circuit board 90 so as to enlarge the radius of the convex lens compared with the convex lens part provided in the conventional game machine. That is to say, this constitution can improve the freedom degree of the radius of the convex lens part 55. COPYRIGHT: (C)2008,JPO&INPIT
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