| 摘要 |
<P>PROBLEM TO BE SOLVED: To wholly solve the problems of limiting an irradiation area to the vicinity of a light emitting source, using a large number of light emitting sources, and being unable to illuminate to the whole sign pattern in uniform brightness, that is, illuminating to the whole sign pattern in the uniform brightness by a size of a casing shape by enhancing a light flux emission balance degree emitted from a sign pattern without adjusting an angle. <P>SOLUTION: This internal illumination system road sign illuminates to the sign pattern of a display plate detachably arranged on both obverse and reverse surfaces of a casing composed of a required shape by internal illumination arranged in the casing. The opposed reflection diffusion type high output LED internal illumination system road sign is characterized by arranging a high output LED over the whole periphery at a required interval along a casing inner surface, and arranging a reflection diffusion body on the casing inner surface on the side opposed to the respective high output LEDs. <P>COPYRIGHT: (C)2007,JPO&INPIT |
