Patent ID: 6860613
Filing Date: 2005-03-01
Classification: F21V,G02B,G02F

Abstract:
1. A lighting panel device comprising: a light source; a lighting panel receiving light from the light source at an end face thereof, the lighting panel having a bottom reflector face which comprises a saw teeth reflector face; a reflector plate provided under the lighting panel; and a prism sheet provided above the lighting panel, the prism sheet having a plurality of prisms formed on a light discharge side of the prism sheet disposed away from the lighting panel, and arranged in a longitudinal direction and extended in a lateral direction of the prism sheet, each of the prisms having a sectional shape of an isosceles triangle and projecting perpendicularly from the prism sheet, thereby refracting discharge light, the isosceles triangle having a vertex angle of between 30° and 25°.