LED filament light

Patent metadata

Field	Value
Publication number	US-11280452-B2
Application number	US-202117208689-A
Country	US
Kind code	B2
Filing date	Mar 22, 2021
Priority date	Oct 19, 2016
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

An LED filament light including a bulb, a support bar, at least two electrode wires and at least two LED filament strips. Each LED filament strip including a base, an LED chip is set on the base and an electrode is fixed at both ends of the base. One end of the electrode is electrically connected with an LED chip on the base, the other end of the electrode is electrically connected with an electrode of another LED filament or electrically connected to one end of the electrode wires so that the support bar is fixed to the bulb, and the other end is connected with at least one. As the support bar is set to replace the existing LED filament light core and metal wire, and creatively the LED filament electrodes directly is connected to each other.

First claim

The invention claimed is:

1. A light bulb comprising:
a bulb head;
a stem connected to the bulb head;
multiple support bars made of a rigid material, the support bars being fixed to the stem;
at least two electrode wires; and
at least two LED filament strips, wherein each LED filament strip comprises a base, an LED chip is set on the base and electrodes are fixed at both ends of the base, wherein one end of the electrode is electrically connected with the LED chip on the base, the other end of the electrode is electrically connected with the electrode of another LED filament or electrically connected to one end of the electrode wires, and
wherein there are at least two LED filament strips directly fixed to bent ends of the multiple support bars for expanding luminance angles of the LED filament strips, the bent ends of the multiple support bars having the same material as other portion of the support bar.

2. The light bulb of claim 1 , further comprises a bulb shell, the bulb shell and the stem form a confined space, the electrode wires extend from the outside into the confined space, and the LED filament strip is accommodated in the confined space.

3. The light bulb of claim 2 , wherein the confined space is filled with heat dissipation gas.

4. The light bulb of claim 1 , wherein the support bar is made of metal material, and the other end of the support bar is fixedly connected to the LED filament strip.

5. The light bulb of claim 1 , wherein the other end of the electrode is fixed by welding to the electrode of the other LED filament strip to achieve electrical connection.

6. The light bulb of claim 1 , wherein the electrode wire is made of a wire, and the wire is bendable and has a structural strength.

7. The light bulb of claim 1 , further comprising a drive assembly, and an insulating sleeve, the drive assembly being housed in the insulating sleeve, wherein the insulating sleeve is housed in the bulb head.

8. The light bulb of claim 1 , wherein the electrode has magnetic force.

Assignees

• Xiamen Eco Lighting Co Ltd

Inventors

• Wu Minghao
• Gao Yanzeng
• Wu Feng
• Li Fuwen

Classifications

• F21K9/232 Primary

  specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb · CPC title

• F21V23/06 Primary

  the elements being coupling devices {, e.g. connectors} · CPC title

• F21V29/502

  characterised by the adaptation for cooling of specific components · CPC title

• F21Y2107/00

  Light sources with three-dimensionally disposed light-generating elements · CPC title

• F21K9/237 Primary

  Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases (F21K9/238 takes precedence) · CPC title