Patent · US Active

LED lighting device

US9681518B2 · kind B2 · utility

0Cited by

9References

13Claims

0Family size

Assignee

Schott AG · DE

Inventors

Bernd Woelfing · Mainz, DE
Andreas Schneider · Leonberg, DE

Key dates

Filing date	Mar 3, 2016
Grant date	Jun 13, 2017
Priority date	—
Expiry date	Mar 3, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An LED lighting device for connection to an AC voltage source is provided. The lighting device includes at least a first and a second set of LEDs, at least two LEDs assigned to the first set of LEDs and electrically arranged in series, and at least two LEDs assigned to the second set of LEDs and electrically arranged in series, a connector configured to connect the LED lighting device to the AC voltage source, and a set activator. The set activator having a voltmeter for measuring a currently applied voltage amplitude of the AC voltage source, a signal generator for generating a switching signal in response to the currently applied voltage amplitude, and a current controller for controlling the current flowing through the at least first and second sets of LEDs.

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