Patent ID: 6561665
Filing Date: 2003-05-13
Classification: G09F

Abstract:
A lighting signboard having a curved structure, comprising:a curved light guide plate which transmits and outputs a light from a light source into a predetermined space and has a center portion curved along an outer surface of a circular column structure; a back plate which includes at least support member formed in a plate shape distanced from the back plate in such a manner that both side ends of the light guide plate are fixedly disposed therein, and a fixing member formed in a plate shape distanced from the back plate in such a manner that upper and lower portions of the light guide plate are fixedly disposed, and the center portion of the back plate is attached on an outer surface of the circular column structure based on the shape of the light guide plate; a front plate which includes a light outputting window having an opened portion through which a light from the light guide plate is outputted, and a joining member formed in a concave shape stepped in the direction from the outer portion of the light outputting window to an inner side of the same and including ribs formed in the direction of the center of the light outputting window and receives the light guide plate installed in the back plate therein and is joined with an outer portion of the back plate; an advertisement plate which includes a curved center portion for thereby being joined with the joining member of the front plate in its outer portion and to which an advertisement film and printed advertisement material are joined on the front surface of the same; and a power which generates a light outputted to the light guide plate and applies a current to the light source installed in the back plate.