| 摘要 |
A dymanic display device comprises rotatable arms vertically arranged in a plurality of stages; round rod cam pieces provided on bases of the arms, vertically superposed one on another and in direct contact with one another, and adapted to be slightly shifted from one another accompanying the rotations of the arms; and a driving means for vertically moving the cam pieces. The device is applicable through a simplified construction to various display devices excellent in solemnity, gorgeousness and amusement, when flower petals are attached to the arms. The device is so constructed as to be able to jet water in such modes of amusing fountain: a mode of jetting water directly upward, a mode of jetting water laterally, forming a shape like a flower, and a mode of jetting water, forming a varying shape from the upward-jet fountain to the flower-like fountain. In the case where the multiple petals forming a flower are vertically movable with respect to the water surface in such a manner that the flower open when they emerge above the water surface and they close when they go underwater, the rendering effect can be much improved. |
