JPH02121787U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a perspective view of a light guide according to an embodiment of the present invention;
Figure 2 is a perspective view of the light guide plate, Figure 3a is a plan view showing the arrangement of the lamps, Figure b is a sectional view taken along line A-A' in Figure a, and Figure 4 is the same as the above. FIG. 5 is a plan view showing a light guide with different arrangement of light guide plates, FIGS. 6 a to c are explanatory diagrams of light guide plates of different shapes, and FIG. 7 a is a diagram of a conventional example. The plan view and FIG. 3B are cross-sectional views taken along line A-A' in FIG. 1 is a lamp, 2 is a light guide, 4 to 6, 8 are light guide plates, and 4a to 6a, 8a are end faces.

Claims (1)

[Scope of utility model registration request] In a surface lighting device in which a plurality of linear light sources are arranged in parallel along both end faces of a light guide, and a display body having translucency is illuminated with light from the light guide emitted by the light sources, The light sources are arranged such that the center of the light source on the other end is located at the joint between the light sources on one end, and the light incident from one end is guided to the side opposite to the incident end and diffused into the entire light source. A light guide is formed by laminating a plurality of thin light guide plates that emit light uniformly along the longitudinal direction of the light source, and the incident end face of at least some of the light guide plates at the seam of the light source is placed on the opposite side. A surface lighting device that faces a light source.