| 摘要 |
PROBLEM TO BE SOLVED: To achieve linear light emission which has less luminance unevenness than a conventional one.SOLUTION: A vehicular lighting fixture 1 includes an LED 2 in which an optical axis Ax faces frontward, and a light guide lens 30 arranged in front of the LED 2. The light guide lens 30 has: an incident surface 31 provided on a rear surface; and an emission surface 32 provided on a front surface, and formed in a long shape along the longitudinal direction. A cross-sectional shape substantially along the longitudinal direction of the incident surface 31 is formed in a shape which has: a central recess part 31a for diffusing the light around the optical axis Ax out of the light from the LED 2 to the longitudinal direction; and two continued projection parts 31b for condensing the light emitted further to both left and right sides than the light heading toward the recess part 31a to the front side so as to be substantially along the cross direction. A vertical cross-sectional shape substantially orthogonal to the longitudinal direction is formed in a convex shape so as to make the light from the LED 2 parallel light which is substantially along the cross direction.SELECTED DRAWING: Figure 4 |
