SHELF-USE LIGHT GUIDE ELEMENT AND LIGHTING DEVICE

摘要

In order to obtain a shelf-use light guide element and a lighting device capable of bright, highly efficient, and uniform illumination in a desired specific direction through light distribution control of light from a light source, the shelf-use light guide element (1A-1H) has: a reflective surface that is provided with a first reflecting surface (12Aa) having a diffusing part (14) for totally reflecting incident light while diffusing the incident light within a predetermined angular range; and an exit surface (13A) that is provided at a tilt with respect to the first reflecting surface to such an extent that light reflected off the first reflecting surface is emitted after partially refracted while the remainder of the light is totally reflected. The lighting device (10A-10H) is equipped with the shelf-use light guide element (1A-1H) and point light sources (point light sources (2)).