초록 ▼

A spread illuminating apparatus 1 according to the present invention includes a transparent substrate, a linear light source made up of a light reflector 16 as an optical path conversion portion and/or a light conductor 13 made of a linear transparent material and having optical path conversion port

A spread illuminating apparatus 1 according to the present invention includes a transparent substrate, a linear light source made up of a light reflector 16 as an optical path conversion portion and/or a light conductor 13 made of a linear transparent material and having optical path conversion portion at least, on either side and disposed closely along at least one side end surface 3 of a transparent substrate 2, and a dot-shaped light source 12 disposed on one end portion 14 of the light conductor 13. The light emitted from the dot-shaped light source 12 enters the light conductor 13/or reflected on the light reflector, and the light emitted from a surface 18 opposing to the transparent substrate 2 enters the transparent substrate 2, to thereby become a linear light source as a whole. Accordingly, since a fluorescent lamp which has been employed as a conventional light source is not used, impact resistance is improved, and illumination is enabled at a low voltage.

대표청구항 ▼

[ What is claimed is:] [1.]1. A side light type spread illuminating apparatus in which at least a linear light source is disposed in the vicinity of a side surface of a transparent substrate, wherein the linear light source comprises:a dot shaped light source; andan optical path conversion means com

[ What is claimed is:] [1.]1. A side light type spread illuminating apparatus in which at least a linear light source is disposed in the vicinity of a side surface of a transparent substrate, wherein the linear light source comprises:a dot shaped light source; andan optical path conversion means comprising a light conductor connected integrally with the transparent substrate interposing a groove between the light conductor and the transparent substrate, the optical path conversion means including an optical path conversion portion comprising a light scattering portion, the optical path conversion portion being formed so that an area density of the light scattering portion increases in proportion to the distance from the dot-shaped light source.