| 摘要 |
PROBLEM TO BE SOLVED: To attain even belt-like light emission mode with less luminance unevenness.SOLUTION: A lighting tool 1 includes: a light guide part 20 formed into a stripe shape; and a plurality of light sources 81 arrayed on one end surface 21 in a width direction of the light guide part 20, and making light incident to the end surface 21. The one end surface 21 in the width direction of the light guide part 20 is subjected to light diffusion, the end surface 24 on the other side is subjected to light diffusion, and a length W1 in the width direction of the light guide part 20 is longer than a length T1 in a thickness direction of the light guide part 20.SELECTED DRAWING: Figure 1 |
