Light emitting unit having light source inside a lamp tube...

Details Light emitting unit having light source inside a lamp tube... Light emitting unit having light source inside a lamp tube...

2007-09-05

2009-10-13

Husar, Stephen F (Department: 2875)

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

C362S373000, C362S263000, C362S240000, C362S256000, C362S249020

Reexamination Certificate

active

07600897

ABSTRACT:
The light emitting unit of this invention mainly comprises: a lamp holder made of insulating ceramics with high thermal conductivity; a plurality of heat dissipating fins protruding integrally from the outer end face of the lamp holder; a light-transmissive lamp tube provided on the lamp holder; a light source mounted in the light-transmissive lamp tube; a lampshade having a light reflecting surface in the inner edge being provided on the lamp holder corresponding to the light-transmissive lamp tube; and a light-transmitting element, corresponding to the transmissive lamp tube, provided outside the lampshade. According to this structure, significant illumination effect can be obtained from the entire light emitting device. Moreover, good heat dissipation effect can also be achieved by the lamp holder made of insulating ceramics with high thermal conductivity and the heat dissipating fins formed integrally with the lamp holder, such that the reduced service life, light depreciation and burn-out of the inside light source caused by overheating of the light source can be avoided so as to increase the entire performance in use.

REFERENCES:
patent: 7144140 (2006-12-01), Sun et al.
patent: 7458706 (2008-12-01), Liu et al.
patent: 7534015 (2009-05-01), Xu et al.
patent: 7535030 (2009-05-01), Lin
patent: 2009/0059594 (2009-03-01), Lin

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