Patent ID: 7942546

Claim:
A light guide member for propagating inside a light that has been emitted from an light source disposed on a back face and for emitting the light outside from a front face, comprising: a light guide portion provided with the back face and the front face that is a reflecting face for propagating in a horizontal direction a light emitted from the light source, and a protrusion that is protruded downward from the back face of the light guide portion and on which a plurality of light sources generating colors different from each other is disposed, wherein the protrusion is integrated with the light guide portion such that the protrusion and the light guide portion form a single integral member, the plurality of light sources are disposed directly on a back face of the protrusion, the protrusion is in a cylindrical shape and the light guide portion is provided with a conical depression in such a manner that the conical depression is disposed at the position of the front face directly over the protrusion, the protrusion improves a color mixture of lights irradiated inside from a plurality of the light sources, and the light guide portion propagates in a horizontal direction the lights that have been emitted from a plurality of the light sources and that have been mixed in the protrusion.