Patent ID: 6520655
Filing Date: 2003-02-18
Classification: F21S,F21V,F21Y,G02B,Y10S

Abstract:
In a lighting device comprising:a light transmitting member of cylindrical hollow body in which at least a part thereof is transparent or translucent; at least one LED for emitting a light with directivity along an axial direction toward an internal space of said light transmitting member, said at least one LED being disposed at either one end or both ends of said light transmitting member; a light scattering member disposed on the inside of an internal surface of said light transmitting member to transfer the light to an external part of said light transmitting member; the improvement wherein said light scattering member comprises a transparent or translucent island formation body made of silicone rubber and including a plurality of islands formed to protrude toward a center axial line of said light transmitting member and located in close proximity therewith; and the islands of said island formation body are formed so that a plurality of projections are disposed with belt-like arrangement at predetermined intervals against the axial direction of said light transmitting member.