Lighting panel device for illumination of an object

摘要

A lighting panel device has a light source, a lighting panel receiving light from the light source at an end face, and a prism sheet provided above the lighting panel. The lighting panel has a bottom reflector face, and the prism sheet has a plurality of prisms arranged in a longitudinal direction of the prism sheet. Each of the prisms has a sectional shape of a triangle. A vertex of the triangle is between 30° and 25°.