| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that maintenance of an internal illumination display board which uses an LED as a light source is difficult when a part of a light source is disconnected to cause nonlighting at a large display board, a high-place display board or a traffic display board, and since the internal illumination display board has a light diffusion board or a light diffusion sheet attached to the surface, it takes much time and labor for removing them to repair the inside. <P>SOLUTION: Disclosed is the internal illumination display board, wherein a side frame of one side of the internal illumination display board has a structure of a "float frame" 3 which fixes by floating it by 5 to 30 mm from a display board bottom part, and a "light emitting plate" 4 of the LED is inserted/pulled-out, so that easy maintenance is made possible. <P>COPYRIGHT: (C)2010,JPO&INPIT |
