To emit an illuminating light having high directivity of light and an uniformized luminance distribution so as to improve the utilization efficiency of the light, in a light pipe 1 configured so that the light from a light source is made incident through an incidence end 5, repeatedly reflected by a sidewall surface 3 and is then emitted from an injection end 6.

A light guide 2 includes a translucent partition part 12 for partitioning the internal space of the light guide 2 in the longitudinal direction of the light guide 2, and a refraction part 4, formed on a surface of the incident end 5-side region of the partition part 12. The emission angle of the light emitted through an emitting end 6 is set smaller than the incident angle of the light introduced through the incident end 5.