| 摘要 |
PROBLEM TO BE SOLVED: To provide a stage structure of a center prize-winning role object with which a game ball smoothly passes through to a specific port formed in the middle of a stage surface. SOLUTION: A second specific entrance 44b positioned in the center in a right and left direction and a first specific entrance 44a positioned on the left side are partitioned from each other with a partition member 54a. The second specific entrance 44b and a third specific entrance 44c positioned on the right side are also partitioned from each other with a partition member 54b. On a guiding surface 50 being an area on this side between the pair of partition members, a pair of protrusions 56a and 56b slightly projecting so that a game ball B coming rolling can climb up are formed. An interval T between the pair of protrusions is a little shorter than an interval between the nearest parts to the guiding surface 50 of the pair of partition members, and is shorter than the diameter of the game ball. COPYRIGHT: (C)2004,JPO&NCIPI
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