To provide a lighting device capable of showing a light source to be three-dimensional and as a plurality of pieces, and used for a pilot lamp or the like such as decorative lightings of play machines, lightings of switches of vending machines, electric appliances or cellphones, and easily being set by a simple structure.

The lighting device is structured by a light source housing case opened at a lighting part, at least one or more light sources stored in the light source housing case, a translucent sheet body attached to cover an opening of the light source housing case, and a micro prism sheet made of many polyhedrons with almost pyramid shapes that can obtain prism effects capable of showing a light source to be a plurality of pieces, formed on the reverse side of the light source side of the sheet body.