| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-luminous advertising display capable of displaying information on a wide area with a minimum light source, and is light-weight and easy to carry. SOLUTION: In the thin self-luminous cavity diffusion display device, a cavity space is provided and light source are provided at the upper side, the lower side and the sides of the cavity space. The light allowed to irregular reflections more than once between a transparent regression reflector and a total reflection sheet and transmitted through the transparent regression reflector can be recognized from the outside. Furthermore, when the light source is turned off, the transparent regression reflector and a total reflection sheet reflect, thereby it is possible to easily confirm from the outside. The thin self light-emitting type cavity diffusion display device is lightweight because its inside is almost cavity, and it is possible to select, as an electric source, an external AC electric source or an internal electric source, depending on use environment, to vary brightness of the light sources to be optimal, so as to control the lightness at the installation location, and to turn on or to turn off the light by a light sensor. |
