Lighting device
US10344920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 3, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device includes a filament, a filament fixing element, a driving circuit, a lamp holder and a bulb shell. The filament has a long strip bottom, installed with a plurality of LED modules. The filament fixing element has a bearing surface and a heat dissipation part. The bearing surface connects to the long strip bottom of the filament. The heat dissipation part is connected to the bearing surface to dissipate the heat. The driving circuit provides a suitable current to the filament for emitting light. The lamp holder houses the drive circuit and carries the filament fixing element. The bulb shell and the lamp holder constitute an accommodating space for receiving the filament and the filament fixing element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.