Lighting device with electric power generation function
US11221133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Oct 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J45/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device includes a light-emitting device, a heat sink having a hollow unit inside, a translucent cover, and a thermoelectric element. The thermoelectric element includes a casing unit having a housing unit, and includes a first electrode unit, a second electrode unit having a work function different from that of the first electrode unit, and a middle unit including nanoparticles having a work function between the work function of the first electrode unit and the work function of the second electrode unit, which are provided inside the housing unit. The casing unit is provided on the inner surface of the hollow unit of the heat sink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.