LED light bulb having filament with conductor pratly overlapping with LED chip
US10868226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8513
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light bulb, consisting of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; a single LED filament, disposed in the lamp housing, the LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other by a wire; a plurality of conductive sections, each of the conductive sections is located between the two adjacent LED sections and configured to electrically connect the two adjacent LED sections, each of the conductive section includes a conductor connecting the LED sections, and length of the wire being less than that of the conductor, the conductor comprises joint region and transition regions, the joint region is located between the transition regions and configured to connect the transition regions, wherein taking the central point of the LED chip as the center, the shortest distance from the center to the closest boundary of the joint region is set to r1, and the shortest distance from the center to the closest boundary of the transition…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.