| 摘要 |
PURPOSE: A sleepiness prevention desk is provided to generate strong noise and vibration until weight applied to an upper plate is removed. CONSTITUTION: A sleepiness prevention desk comprises an upper plate, a desk main body, support legs, a hitting member, and an operating unit. In the upper plate(10), a vertical long hole is formed. In a ball receptor(12), a plurality of balls are accepted. In the desk main body(20), a moving path for transferring a ball to the side is formed. In the support legs, a discharge path is formed. The hitting member is equipped in the other side of a guide portion. The operating unit compresses and releases the hitting member.
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