| 摘要 |
<P>PROBLEM TO BE SOLVED: To aim at further enhancement of brightness of a lighting device using a point light source. <P>SOLUTION: A plurality of point light sources 24 are arranged on a side face 36e of a light guide plate 36 of each of light source units 32 and, since the light source units 32 are provided in plurality, the number of point light sources 24 is increased for the lighting device 30 as a whole. Further, a shape of the light guide plate 36 of each of the light source units 32 is divided into pieces and downsized for the whole of the lighting device 30, so that molding of the light guide plate 36 can be made easy. Further, since an optical component such as a reflection plate 26 to be used together with the light source unit 32 is divided into pieces like the light guide plate 36, degradation of production yield can be prevented by effectively using a single sheet when a general method of cutting out a necessary shape from a large sheet is adopted. Furthermore, by replacing only a failed light source unit 32, desired brightness can be easily restored. <P>COPYRIGHT: (C)2013,JPO&INPIT |
