Patent · US Active

Illumination device with LED strip light engine configured for retrofitting pin-based CFL socket

US11655972B2 · kind B2 · utility

0Cited by

0References

23Claims

0Family size

Assignee

LEDVANCE GMBH · DE

Inventors

Ran Lin · Nanhu, CN
Bernhard Rieder · Regensburg, DE
Shaozhu Yang · Tangxia, CN

Key dates

Filing date	Sep 12, 2018
Grant date	May 23, 2023
Priority date	—
Expiry date	Mar 28, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An LED illumination device corresponds to a compact fluorescent lamp and has improved thermal properties. The illumination device includes a transparent tube having an inner wall defining a cavity, a light engine having one or more light emitting diodes, and a driver to drive the light engine. The light engine is disposed at the inner wall of the transparent tube. The arrangement of the light engine and the one or more light emitting diodes at the inner wall of the tube provides improved lighting characteristics. Simultaneously, an improved cooling is provided by the interface surface for conducting heat between the inner wall and the light engine.

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