| 摘要 |
PROBLEM TO BE SOLVED: To provide a plane display lamp having improved visibility of display characters, symbols, etc., by suppressing the luminance unevenness of the plane display lamp having a display area below about several 10 cm2 to <=3 times. SOLUTION: This plane display lamp consists of a planar light transmission body 12, a white bottom plate 16 covering the rear surface of the light transmission body 12, a white case frame 18 covering the flanks of the light transmission body 12, a diffusion sheet 20 covering the front surface of the light transmission body 12 and two LED devices 14a and 146 disposed by one piece each on the opposite flanks of the light transmission body 12. The rear surface of the light transmission body 12 is screen-printed with high reflection white ink, by which the dot patterns of a light scattering body are formed. |
