Patent ID: 7600897

Claim:
A light emitting unit, mainly comprising: a lamp holder ( 1 ) made of insulating ceramics with high thermal conductivity; a plurality of heat dissipating fins ( 11 ) made of insulating ceramics with high thermal conductivity protruding integrally from the outer end face of the lamp holder ( 1 ); a light-transmissive lamp tube ( 2 ) provided on the lamp holder ( 1 ); a light source ( 21 ) mounted in the light-transmissive lamp tube ( 2 ); a lampshade ( 3 ) provided on the lamp holder with respect to the outer edge of the light-transmissive lamp tube ( 2 ); and a light-transmitting member ( 4 ) provided at the outer end of the lampshade ( 3 ) with respect to the light-transmissive lamp tube ( 2 ).