| 摘要 |
<p>An electric light unit forming a pixel utilizing an afterimage effect, and an electric signboard built by assembling a plurality of the electric light units are provided. In particular, the electric light unit is made to rotate an arbitrary point of the rotation panel in a square shape, with a small number of light-emitting means that can generate an afterimage effect. In order to make an electric signboard of a desired size, the electric light units are arranged and assembled in one or more lines by joint devices, and belts engaging pulleys are formed at the lower parts of the electric light units. The electric light units in one row operate concurrently by a single rotation power source connected to the end of the row of the electric light units by belt, and the light-emitting means on the electric light units can display desired pictures such as drawings or letters by the control of display modules installed at the bottom of the rotation panels of the electric light units.</p> |
