| 摘要 |
A backlight (2) (illumination device) is provided with a plurality of light emitting units (11), each of which includes a light source (5), a light guide (7) which diffuses light emitted from the light source and emits light from a light emitting surface, and a reflecting sheet (6) which is disposed on the opposite side to the light emitting surface of the light guide and reflects light traveling in the light guide so that the reflected light is directed toward the light emitting surface. In the backlight (2), the light emitting units (11) are arranged in tandem. Each light emitting unit (11) is also provided with a substrate (4) on which the light source (5) is fixed. The light guide (7) is provided with a projection (12) on the surface facing the reflecting sheet (6). Each of the reflecting sheet (6) and the substrate (14) is provided with a hole (14) or a through hole (13) (a hole or a recess) in which the projection (12) fits.
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