Light emitting diode lamp tube

Details Light emitting diode lamp tube Light emitting diode lamp tube

2011-05-03

2011-05-03

Won, Bumsuk (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S493000, C313S498000, C313S634000, C313S324000

Reexamination Certificate

active

07936126

ABSTRACT:
A light emitting diode (LED) lamp tube includes a circuit board and a tubular enclosure. The circuit board is disposed in the enclosure such that the enclosure is divided into a non-illuminated portion and a light-receiving portion. The light-receiving portion has two light-condensing side sections corresponding respectively to two sides of the circuit board, and a light-diffusing middle section connected between the light-condensing side sections. An outer surface of the light-receiving portion has a smoothly varying curvature. The light-condensing side sections cooperate with the light-diffusing middle section to diffuse uniformly LED light transmitted from an outer surface of the enclosure.

REFERENCES:
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patent: 2003/0137828 (2003-07-01), Ter-Hovhannisian
patent: 2005/0122742 (2005-06-01), Ho
patent: 2006/0126329 (2006-06-01), Fu
patent: 2008/0211370 (2008-09-01), Sun
patent: 2009/0059595 (2009-03-01), Ge
patent: 2010/0002439 (2010-01-01), Lin et al.
patent: 2010/0232154 (2010-09-01), Chen
patent: 2010/0277903 (2010-11-01), Bauer et al.
patent: 2010/0284181 (2010-11-01), O'Brien et al.
patent: 2010/0315801 (2010-12-01), Wu et al.

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