| 摘要 |
PROBLEM TO BE SOLVED: To provide a cup capable of realizing a dynamic representation to an outer side so as to promote usage of the cup by attracting attention of a user, attempting at maximizing an effect of an advertisement by showing contents (for example, contents of the advertisement) displayed in a rotating display part more clearly to the user, minimizing power consumption of a battery by stopping rotation of the rotating display part at night or in a room with no lighting, and providing a particular sensation to the user by using a light source emitting light for a certain time after the cup is lifted. SOLUTION: A hollow part 12 is provided in a lower part of the cup 10, and the rotating display part 13 rotating in a predetermined direction (or both directions) is provided in the cup 10. The display part 13 rotates when it is light and it stops when it is dark. Rotation of the display part 13 stops when the cup is lifted from the bottom and it becomes bright. The display part 13 rotates by lifting of the cup and an illuminant 25 emits light for a predetermined time.
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