| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of unevenness of luminance by arranging at least one or more cylindrical light sources in a bottom part inside of a flat lamp house, of which upper surface is opened, and arranging spacer pins in the bottom part inside of the lamp house except for parts provided with cylindrical light sources of a device having a light scattering body, which are arranged so as to seal the opening part of the lamp house. SOLUTION: At least one or more cylindrical light sources 1 are arranged in a bottom part inside of a flat lamp house 3, of which upper surface is opened, and spacer pins 4 are arranged in the bottom part inside of the lamp house except for parts provided with cylindrical light sources 1 of a back surface lighting device having a light scattering body 2, which are arranged so as to seal the opening of the lamp house 3. The spacer pin 4 is made of the white or transparent raw material, and desirably made of the resin. The spacer pins are desirably integrally formed with the lamp house 3. The number of the spacer pin 4 to be used depends on the screen size, and 4-6 pins are desirably formed in the screen at 12-16 inches, and 5-9 pins are desirably formed in the screen at 16-20 inches. |
