| 摘要 |
PROBLEM TO BE SOLVED: To provide a rocking system of a display body which has increased rocking movement force of an advertisement display body to appropriately rock a plurality of kinds of advertisement display bodies with a different size and weight by the rocking apparatus of the same kind. SOLUTION: A pair of permanent magnets 16A and 16B are provided separately in the rocking direction at a bottom end of a pendulum 12, having the advertisement display body 15 at a top end and rockably supported by a frame body 11. A pair of driving coils 17A and 17B facing permanent magnets 16 A and 16B separately, are provided in the frame body 11. By supplying a magnetizing current alternately to each of the driving coils 17A and 17B from an astable multivibrator circuit 18 with a predetermined time constant and by magnetizing each of the drive coils 17A and 17B to a magnetic pole mutually repelling (or attracting) the poles of the permanent magnets 16A and 16B facing the driving coils, rocking movement of the pendulum 12 including the advertisement display body 15, the permanent magnets 16A and 16B and a weight 20 performing pendulum motion due to inertia, is promoted. COPYRIGHT: (C)2006,JPO&NCIPI
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