| 摘要 |
In an illuminating device (3) provided with a cold cathode fluorescent tube (linear light source) (20), a chassis (12) that houses the cold cathode fluorescent tube (20), a diffusion plate (15) that diffuses light from the cold cathode fluorescent tube (20), and a diffusion plate supporter (21) that is provided in the chassis (12) to support the diffusion plate (15), the diffusion plate supporter (21) includes: a substrate (21a) that is configured to be capable of being deformed elastically in response to changes in ambient temperature; an attachment portion (21c) that is provided on one (21a1) of opposed surface sides of the substrate (21a) and attaches the substrate (21a) to the chassis (12); and a support portion (21b) that is located on the other (21a2) of the opposed surface sides of the substrate (21a) so as to come into contact with the diffusion plate (15).
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