Ts Tech Co., Ltd.

Tomoya Takahashi

Manabu Mihira

So Ono

Kenta Kasuya

A vehicle illumination device includes a light source and a long light guide body that extends linearly in a direction of entry of light from one end thereof disposed so as to be adjacent to the light source and radiates light from a linear light-emitting face, the light guide body having formed thereon projecting parts arranged in a longitudinal direction on a back face of the light-emitting face and extending in a direction orthogonal to the direction of entry of light. The widths of the projecting part vary in accordance with the distance from the light source. Provided is a vehicle illumination device that enables light emission with uniform luminance in the longitudinal direction to be realized while improving the productivity of a light guide body.

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Tochigi, Japan

Tomoya Takahashi