| 摘要 |
PROBLEM TO BE SOLVED: To efficiently prevent leakage light to a road surface side.SOLUTION: A light source unit includes: an optical lens body 39 that has an incident recess part 65 opened larger than a light-emitting surface 35A of a COB type LED 35, and a convex lens part 61 expanding light made incident from an incident surface 66 of the incident recess part 65 in a first direction J1 and collecting light in a second direction J2; and a reflection mirror 59. On a cross section in a second direction, the COB type LED 35 and the optical lens body 39 are arranged so as to face one end 35AT of the light-emitting surface 35A and one end 66Ta of the incident surface 66 to each other. The optical lens body 39 includes a first reflection surface 73 that is provided on the side of the one end 66Ta of the incident surface 66, and controls light K1 made incident to the incident recess part 65 out of the incident surface 66. The reflection mirror 59 is arranged oppositely to the first reflection surface 73, and controls light K2 of the COB type LED 35 out of the incident recess part 65.SELECTED DRAWING: Figure 11 |
