| 摘要 |
A display device for displaying symbols in an entertainment machine comprises an endless belt 16 with a curved symbol-carrying surface. The device comprises two rollers 7 which are axially spaced from each other, and which are simultaneously driven by a drive motor 4. The belt 16 extends around part of the circumference of each roller 7, and is longer in length than the sum of twice the said axial spacing of the rollers 7 plus the length of said parts of the roller circumference, ie. it is at least ellipsoid in form. Preferably the rollers 7 are mounted in a mounting member 3 having a part-elliptically curved portion extending between the rollers, around which the movable belt 16 is located. The rollers 7 may comprise retaining elements 15 to help to maintain the belt 16 on the rollers 7, and may also have pyramidal drive dogs 11 which engage apertures 18 in the belt 16.
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