| 摘要 |
A panel light source device has a construction which not only prevents a gap or clearance between a reflecting sheet 5 and a light guide plate 1 from occurring, but also improves the luminance and uniformity of a light emitting surface, at a low cost. A panel light source device includes a light guide plate 1 on a front face of which an optical sheet 2 is provided, a light emitter 3 to cause light to enter a side face of the light guide plate 1 , a reflecting sheet 5 , provided facing a rear face of the light guide plate 1 , and an end of which extends around the light emitter 3 to reach the front face of the light guide plate, and a case 6 , not only housing the light guide plate 1 , the light emitter 3 and the reflecting sheet 5 , but also equipped with a reflecting sheet contact section 20 , causing part of a front face thereof to recede toward a rear face side thereof, to bring the part of a front face thereof into contact with the reflecting sheet 5.
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