Qirong Cao

20070109777, May 17, 2007

Sep 28, 2006

11/541425

John Zhang - Concord CA, US
Peter Y.Y. Ngai - Alamo CA, US
Qirong Cao - Albany CA, US

Acuity Brands, Inc. - Atlanta GA

F21V 29/00

362218000

A lamp heat extractor device for lowering the cold spot temperature of a fluorescent lamp includes a base portion adapted to be attached to a heat conductive portion of the fluorescent lighting fixture proximate the fixture's lamp socket or sockets, and an extended sleeve end portion thermally connected to the base portion by a conductive connector portion. The conductive connector portion positions the extended sleeve portion so that it contacts the cold spot end of the fluorescent lamp or lamps held by the lamp sockets of the fixture to allow heat transfer to the fixture housing to which the heat extractor device is attached. Suitably, the outer surface of the extended sleeve end portion of the heat extractor device can have a plurality of radially extending fins for increasing surface area for heat radiation from the extended sleeve portion, thereby increasing the overall heat extracting efficiency of the device. The device can have two or more sleeve ends thermally interconnected to the base portion for contacting the cold spot ends of two or more fluorescent lamps.

20230100443, Mar 30, 2023

Sep 30, 2021

17/490100

- Atlanta GA, US
Douglas D. Grove - Grayson GA, US
Qirong Cao - Arlington Heights IL, US

F21S 9/02
F21S 8/02
F21V 23/00

A light fixture may include a light fixture housing defining an internal cavity. A light fixture may also include one or more light engines positioned within the internal cavity of the light fixture housing and designed to emit light for illumination. A light fixture may also include an external power driver positioned within the internal cavity of the light fixture housing and designed to receive power from an external power source, and provide power to and control the one or more light engines. A light fixture may also include a backup power supply positioned within the internal cavity of the light fixture housing, and a backup power driver positioned within the internal cavity of the light fixture housing and designed to receive power from the backup power supply, and provide power to and control the one or more light engines.