Patent · US Active

Lamp base assembly with electronic ballast for energy-saving lamp

US7755265B2 · kind B2 · utility

0Cited by

4References

2Claims

0Family size

Assignee

OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

Lai Qian Cen · 流花街道, CN
Chao Du · Sunnyvale, US
Wolfgang Pabst · Munich, DE

Key dates

Filing date	Nov 11, 2005
Grant date	Jul 13, 2010
Priority date	—
Expiry date	Feb 27, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/0002
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lamp base assembly with electronic ballast for energy-saving lamp includes a housing (22), a lamp cap (21) and an electronic ballast (24) with transistors (23) provided within the housing. A transistor heat-diffusing element surrounding each transistor is provided within the lamp base, for enhancing the heat transfer from the transistors to the housing or the lamp cap, so that the heat generated from the transistors could be transferred out of the lamp base assembly. Thus, the heat-diffusing ability of the transistors is improved, and the working temperature of the transistors could be kept within a safe scope, so that the lifetime of the energy-saving lamp is guaranteed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.