| 摘要 |
PURPOSE: A road sign board with a light and an auxiliary light is provided to prevent the deformation and the discoloration by the infiltration of the external moisture and fine dust and by ultraviolet ray, to emit the heat to the outside, and to perform the prevention of crime with an excellent visibility. CONSTITUTION: A road sign board with a light and an auxiliary light(100) includes a first, a second and a third LED(Light Emitting Diode) PCB, a pair of supporting boards, a lens with light diffusion cover(70), an air filter, a front, a back and an outside transparent plate, a front and a rear external cover(92). The first LED PCB for auxiliary lighting includes the first multiple LEDs installed inside of the lower concave groove of the thermal radiation aluminum sash of a center frame. The second and the third LED PCB include the second and the third multiple LEDs connected with a fixed distance to a protrusion formed on the front and the back surface of the upper concave groove of the heat radiation aluminum sash. The pair of supporting boards are installed on both upper sides of the heat radiation aluminum sash, and positioned higher than the second and the third LEDs. The lens with light diffusion cover diffuses the light radiated by the first multiple LEDs. The air filter blocks the infiltration of the fine dust and moisture from the outside, and ejects the internal heat to the outside when the temperature of the inside rises above a fixed temperature. The front, the back and outside transparent plates are inserted tightly into the inside of the concave groove of a upper frame(80) and the lens with light diffusion cover. The front and the rear external cover tightly cover the front side and rear side light guide plates, the front and the back printing boards, the front, the back and the outside transparent plates, the front side of a front inside cover, and the rear side of a rear inside cover. |
