| 摘要 |
PROBLEM TO BE SOLVED: To suppress deterioration of luminance, in a vehicular lighting tool using a rod-like light guide body.SOLUTION: A tail lamp 20 includes a first rod-like light guide body 22 and a second rod-like light guide body 24 that emit light, made incident from a first LED 26 and a second LED 28, from an emission surface along an extension direction while guiding the light thereinside. In the emission direction of the emission surface of a part of the first light guide body 22, a part of the second light guide body 24 is arranged in an overlapped manner. On the emission surface of the part of the second light guide body 24 overlapped with the part of the first light guide body 22, formed is a diffusion step 24j for diffusing light from the part of the first light guide body 22. |
