Patent · US Active

Lighting apparatus

US12238836B2 · kind B2 · utility

0Cited by

0References

19Claims

0Family size

Assignee

LEEDARSON LIGHTING CO., LTD. · CN

Inventors

Yongqiang Wu · Tianjin, CN
Yangbin Xu · Fujian, CN
Guiyuan Lin · Beijing, CN
Hemu Ye · Fujian, CN
Qiqiang Lin · Xiamen, CN
Yankun Li · Fujian, CN
Zongyuan Liu · Fujian, CN

Key dates

Filing date	Jul 11, 2022
Grant date	Feb 25, 2025
Priority date	—
Expiry date	May 5, 2043

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/46
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lighting apparatus includes a bridge circuit, a current source, a first LED module, a second LED module and a switch. The bridge circuit is used for rectifying an input AC power to generate a DC power. The current source receives the DC power to generate a driving current. The first LED module emits a first light of a first color temperature. The second LED module emits a second light of a second color temperature. The switch is coupled to the current source to change at least a resistance parameter corresponding to a current ratio between the first LED module and the second LED module to generate a mixed light of a mixed color temperature.

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