PURPOSE: To enhance economy as to the replacement of ball storage tubes which is carried out in order to vary the number of prize balls and to smooth discharge of prize balls by dividing a prize ball storage tube into upper and lower parts, and making the upper opening of a lower storage tube larger than the lower opening of an upper storage tube. ;CONSTITUTION: A prize ball storage tube main body 31 to be mounted on a mechanism plate 2 is divided in the vertical direction into an upper storage tube 31a to which an upper prize ball storage tube 32 and an upper ball stopper 37 are provided and a lower storage tube 31b to which a lower prize ball storage tube 60 and a lower ball stopper 67 are provided. The lower storage tube 31b can freely detachably be mounted on the mechanism plate 2 and the number of prize balls stored in the prize ball storage tube 31 can be varied by means of replacement of only the lower storage tube 31b and this is preferable in view of economy. The upper opening of the lower prize ball storage tube 60 is made larger than the lower opening of the upper prize ball storage tube 32 and thereby no stepped level is formed in a connecting portion when the upper and lower storage tubes 31a, 31b are assembled to the mechanism plate 2, and thus prize balls flowing down within the storage tube are smoothly discharged.;COPYRIGHT: (C)1993,JPO&Japio
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