LED filament and LED light bulb
US12313227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2024 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Apr 22, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/851
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light bulb is provided. The LED light bulb includes a lamp housing, a bulb base, a stem, two conductive supports, a driving circuit, and a flexible LED filament. The flexible filament includes a first LED section, a second LED section, a conductive section, a first conductive electrode, and a second conductive electrode. The first LED section is bent in a first three-dimensional curve shape. The second LED section is bent in a second three-dimensional curve shape. The conductive section includes a center point of the flexible LED filament. The flexible LED filament is bent in a third three-dimensional curve shape including the first three-dimensional curve shape, the conductive section, and the second three-dimensional curve shape. A polarity of the conductor is opposite to polarities of the first conductive electrode and the second conductive electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.