LED bulb

Details LED bulb LED bulb

2006-09-19

2006-09-19

Pak, Sung (Department: 2874)

Optical waveguides

Miscellaneous

C385S088000, C385S146000

Reexamination Certificate

active

07110656

ABSTRACT:
An LED light source has a housing having a base. A hollow core projects from the base and is arrayed about a longitudinal axis. A printed circuit board is positioned in the base at one end of the hollow core and has a plurality of LEDs operatively fixed thereto about the center thereof. In a preferred embodiment of the invention the hollow core is tubular and the printed circuit board is circular. A light guide with a body that, in a preferred embodiment, is cup-shaped as shown in FIGS.2and4a, has a given wall thickness “T”. The light guide is positioned in the hollow core and has a first end in operative relation with the plurality of LEDs and a second end projecting beyond the hollow core. The thickness “T” is at least large enough to encompass the emitting area of the LEDs that are employed with it.

REFERENCES:
patent: 2003/0147254 (2003-08-01), Yoneda et al.

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