Patent ID: 8894251
Filing Date: 2014-11-25
Classification: F21S,F21V,F21Y,H01L

Abstract:
1. A lighting device comprising: a substrate; a plurality of solid-state light emitting elements mounted on the substrate; an optical member mounted on the substrate and arranged so as to cover light emitting surfaces of the plurality of solid-state light emitting elements, the optical member having a semicircular or semielliptical cross-sectional surface, and gutter-shaped in a longitudinal direction with respect to the substrate; a wavelength converting member covering said semicircular or semielliptical cross-sectional surface of the optical member, the wavelength converting member excitable by light from the solid-state light emitting elements, and effective thereby to emit wavelength-converted light; and a light diffusion member that is formed between adjacent ones of the plurality of solid-state light emitting elements and is configured to diffuse the light emitted from the plurality of light emitting elements, the light diffusion member further comprising a diffusion degree that is increased toward an intermediate position between mutually adjacent solid-state light emitting elements, and is decreased toward each of the individual solid-state light emitting elements.