| 摘要 |
Higher brightness of a planar lighting apparatus is promoted by improving close contact between a light-emitting face of an LED and a side end face of a light guide plate. A planar lighting apparatus 20 according to the present invention comprises a light guide plate 2 and an LED 10 arranged on a incoming-light face 3, which is a side end face of the light guide plate 2, and a incoming-light face 15 of an LED 10 has a recess portion 14a formed by the surface of a translucent resin for sealing. On the incoming-light face 3 of the light guide plate 2, a projection portion 3a correspondent to the shape of the recess portion 14a of the LED 10 is integrally formed, and the LED 10 is arranged so that the recess portion 14a is complemented by the projection portion 3a and the actual light-emitting face 15 including the recess portion 14a of the LED 10 and the incoming-light face 3 of the light guide plate 2 are brought into close contact without a gap between them. By this configuration, use efficiency of outgoing light from the LED 10 can be improved.
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