Surface Lighting

A surface light-source device is composed of a light guide plate, luminescent panels and reflector sheets. The light guide plate is composed of three light guide units respectively formed in a rectangular plate-like shape having a rectangular light emission surface, a thick portion, a thin side portion, an incline rear portion and a parallel groove. The luminescent panel includes two element lines formed by aligning LEDs. The parallel groove is formed so as to be symmetrical about a center line, which is perpendicular to the light emission surface, and so as to dwindle its width toward the light emission surface. The light emitted from the LED toward an overhead portion and having the highest brightness is diffused by a groove surface of the parallel groove and is taken into the light guide unit. Thus, brightness unevenness is reduced at the light emission surface.


Thus, a flexible surface lighting system with replaceable LedLights modules is described above that is for use on various venue surfaces, is more resistant to venue environmental factors, and provides for an easier method of installing/replacing one or more lights as discussed below. In each of the above embodiments, the different positions and structures of the present invention are described separately in each of the embodiments. However, it is the full intention of the inventor of the present invention that the separate aspects of each embodiment described herein may be combined with the other embodiments described herein. Those skilled in the art will appreciate that adaptations and modifications of the just-described preferred embodiment can be configured without departing from the scope and spirit of the invention. For example, other plastics can be used for extrusion. Alternately, various elements of the invention can be separately extruded and later connected. Therefore, it is to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described herein.Improved Replaceable LED Module for Use in Flexible Surface Lighting System