Patent Number: 6,168,299

Title: Energy efficient recessed lighting fixture

Abstract: A novel energy efficient recessed downlighted lighting fixture, using a compact laterally twisted, fluorescent lamp, and electronic ballast, provides an easy to install procedure for retrofit installations. Using an integrated socket-and-ballast subassembly, the overall height is reduced so that it can find use with existing metal housings. This recessed fixture uses a newly designed energy efficient compact fluorescent lamp as the primary lighting source. This fluorescent lamp, which is a laterally twisted tube commonly referred to as a "springlamp" allows the shortest lamp known to the fluorescent lamp industry. It provides for minimal light trapping, thereby creating the maximum concentrated lighting output, and lighting distribution that is closest to the illumination supplied by an incandescent bulb. The laterally twisted "SpringLamp" is centrally positioned at the focal point of the parabolically shaped portion of the reflector to produce a collimated-like downlighted column of concentrated light that enhances the illumination efficiency when measured at the central portion of the beam.

Inventors: Yan; Ellis (South Russell, OH)


International Classification: F21V 21/02 (20060101); F21V 19/00 (20060101); F21V 21/04 (20060101); F21V 23/02 (20060101); F21V 17/06 (20060101); F21V 17/00 (20060101); H01R 33/08 (20060101); H01R 33/05 (20060101); F21S 001/06 ()

Expiration Date: 01/02/2018