| 摘要 |
PROBLEM TO BE SOLVED: To reduce unevenness in brightness in a display surface due to the difference in the area between an emission surface of a light source unit and an illumination film.SOLUTION: An illumination signboard (10) includes a backlight unit (30) that has a light guide plate (35), an opaque plate (15) that has the rear surface arranged opposite to an emission surface of the light guide plate and the front surface to which a film (1) can be adhered, and a reflection sheet (14a) that has a reflection surface arranged opposite to an area other than the area opposite to the emission surface of the light guide plate on the rear surface of the opaque plate. |
