| 摘要 |
A spread illuminating apparatus (10) includes: a point light source (12); a light conductor plate (14) having a prism array (15) formed at a side surface (14a) thereof at which the point light source (12) is disposed; a frame (19) which houses the point light source (12) and the light conductor plate (14) and which includes an elastically active area (30) to urge the light conductor plate (14) toward the point light source (12); and a heat-resistant transparent spacer (25) which is composed of an elastic layer (22) preferably made of heat resistant silicone rubber and a non elastic layer (24) made of polyethylene terephthalate and which is disposed between the point light source (12) and the prism array (15) of the light conductor plate (14) such that the elastic layer (22) makes contact with the point light source (12) and the non-elastic layer (24) makes contact with the prism array (15).
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