Patent attributes
A lighting tool for a vehicle includes light source and light guide body that guides light emitted from the light source, and the light guide body has first light guide portion disposed in front of the light source, second light guide portion that is branched off from the first light guide portion and that extends so as to go around toward a side of the light source, incidence portion that is located on a back surface side of the first light guide portion and that is configured to cause the light emitted from the light source to enter the inside of the first light guide portion, and side emitting portion that is located on a side of the first light guide portion facing the second light guide portion and that is configured to emit some of the light entered from the incidence portion toward the second light guide portion.