| 摘要 |
<p>Disclosed is an illuminating device having improved light use efficiency. The illuminating device is provided with: an LED (15), which is disposed to face the light inputting surface (12c) of a light guide plate (12); and a light path (LP), which is demarcated by a light reflecting surface (5a) and a light reflecting surface (6a). In at least a light path region (A) of the whole region of the light path (LP), said light path region being on the side of the light inputting surface (12c), the light reflecting surface (5a) and the light reflecting surface (6a) are disposed parallel to each other, and the distance between the light reflecting surface (5a) and the light reflecting surface (6a) in an LED disposing region (LA) is set larger than that between the light reflecting surface (5a) and the light reflecting surface (6a) in the light path region (A).</p> |
