| 摘要 |
PURPOSE: A sign board consisting of at least two parts is provided to remove the inconvenience to exchange the sign board when the color of the sign board becomes discolor by incorporating thereinto at least two sign boards. CONSTITUTION: A sign board(1) consisting of at least two parts includes a roller, a box, a motor(4), a computer chip(5) and a remote controller(7). The roller is installed at one side of the top and bottom portions(2') of the sign board(1). The sign board cloth is inserted into the box. The motor(4) rotates the box and the computer chip(5) controls the motor(4) so as to wind and unroll the cloth to the box. And, the remote controller(7) is used for controlling the computer chip(5).
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