LED light bulb with flexible LED filament having perpendicular connecting wires
US11015764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Oct 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3577
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light bulb, comprising: a bulb shell with inner surface and outer surface opposite to the inner surface of the bulb shell, the bulb shell includes a layer of luminescent material which is formed on the inner surface or the outer surface of the bulb shell or integrated in the material of the bulb shell; a bulb base connected to the bulb shell; a stem connected to the bulb base and located in the bulb shell, the stem comprises a stand extending to the center of the bulb shell; and a single LED filament, disposed in the bulb shell, the LED filament comprising: a plurality of LED chip units, each of the LED chip units comprises at least two LED chips; a plurality of conductors respectivity located on opposite sides of the LED chip units; wherein a Cartesian coordinate system having an x-axis, a y-axis is oriented for the LED filament where the x-axis is parallel to the length direction of the LED filament, the conductors are parallel to the x direction and at least one of the plurality of conductors is electrically connected with the LED chip units through a first wire perpendicular to the x direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.