LED light bulb

Patent metadata

Field	Value
Publication number	US-10619800-B2
Application number	US-201916566905-A
Country	US
Kind code	B2
Filing date	Sep 11, 2019
Priority date	Aug 17, 2015
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A LED light bulb, consisting of: a bulb shell; a bulb base connected with the bulb shell; a driving circuit disposed in the bulb base; two conductive supports installed in the bulb shell and electrically connected to the driving circuit; a stem disposed in the bulb base; an LED filament module installed in the bulb shell and connected with the stem through the conductive support; at least one supporting arm comprising a hook end and a fixed end, the hook end extends radially from the stand for connecting with one of the connecting portions, and the fixed end is embedded into the stand.

First claim

What is claimed is:

1. An LED light bulb, consisting of:
a bulb shell;
a bulb base connected with the bulb shell;
a driving circuit disposed in the bulb base;
two conductive supports installed in the bulb shell and electrically connected to the driving circuit;
a stem disposed in the bulb base;
an LED filament module installed in the bulb shell and connected with the stem through the conductive supports, the LED filament module comprising:
a first connecting portion and a second connecting portion, the first and the second connecting portions electrically connected to the two conductive supports, both of the first connecting portion and the second connecting portion have a shape surrounding the center axle of the bulb base;
a plurality of LED filaments spaced from each other, wherein each of the LED filaments comprises a first conductive electrode and a second conductive electrode opposite to the first conductive electrode, the first connecting portion connected with the first conductive electrodes, the second connecting portion connected with the second conductive electrodes, each of the plurality of LED filaments comprises:
a plurality of LED chips, electrically connected together;
a flexible light conversion coating, coated on each side of the LED chips and a portion of the conductive electrodes, and exposing a portion of two of the conductive electrodes, and the flexible light conversion coating comprising a top layer and a base layer, wherein the base layer comprises at least one hard portion and at least one soft portion, the hard portions and the soft portions are arranged in a staggered manner, and the hard portions are harder than the soft portions; and
at least one supporting arm comprising a hook end and a fixed end, the hook end extends radially from the stem for connecting with one of the connecting portions, and the fixed end is embedded into the stem.

2. The LED light bulb of claim 1 , wherein the hard portions are aligned with the LED chips and the conductive electrodes.

3. The LED light bulb of claim 2 , wherein the LED filament module is disposed around the stem.

Assignees

• Zhejiang Super Lighting Electric Appliance Co Ltd

Inventors

• Jiang Tao
• Li Liqin
• Fei Heping
• Yao Wentao
• Zhou Lvhui
• Wang Cheng
• Wang Jin

Classifications

• H10W72/534

  being rectangular · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21K9/90

  Methods of manufacture · CPC title

• F21V3/062

  the material being plastics · CPC title

• F21Y2103/33

  annular · CPC title