Lighting device having semiconductor light source and at least one incandescent filament
US11262029B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2019 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2039 |
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 at least one semiconductor light source, at least one incandescent filament configured to emit electromagnetic radiation when energized, and a carrier supporting both the semiconductor light source and the incandescent filament. A screen is defined by the carrier between the semiconductor light source and the incandescent filament, so as to shield the semiconductor light source from the electromagnetic radiation emitted by the incandescent filament. The incandescent filament connected in series with the at least one semiconductor light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.