| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a part to get game balls discharged from a game ball tank fallen in. SOLUTION: On the bottom surface 20 of this game ball tank 10, a gradient shown by arrow B is provided, and the game balls on the bottom surface 20 move to a groove 50, and drop onto a stepped surface 60. The width of the stepped surface 60 is a width W2 which is smaller than the radius of the game ball, and the game balls cannot stay on the stepped surface 60 and drop in the groove 50. The bottom 50a of the groove 50 tilts as shown by arrow A, and the width of the groove 50 is a width W1 which makes the game balls flow down while forming a line. The game balls dropped in the groove 50 move under a state of one line from one end side to the other end side of the groove 50. Then, the game balls flow out from an exit 40. Therefore, the game balls which flow out from the game ball tank 10 do not need to be gotten fallen in. For example, an accessory part in order to arrange the game balls into a line such as a conventional tank rail becomes unnecessary, and all of various kinds of troubles due to such an accessory part can be eliminated.
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