LED filament module and LED light bulb

Patent metadata

Field	Value
Publication number	US-10473271-B2
Application number	US-201615366535-A
Country	US
Kind code	B2
Filing date	Dec 1, 2016
Priority date	Aug 17, 2015
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

An LED filament module and an LED light bulb are disclosed. The LED filament module includes one or more LED filaments, a first connecting portion, and a second connecting portion. The LED filaments are spaced from each other. Each of the LED filaments includes a first conductive electrode and a second conductive electrode opposite to the first conductive electrode. The first connecting portion is connected with the first conductive electrodes. The second connecting portion is connected with the second conductive electrodes. The LED filament module has a first type. The LED filaments, the first connecting portion, and the second connecting portion of the first type are in a three dimensional form. One or two between the first connecting portion and the second connecting portion of the first type has a torus shape.

First claim

What is claimed is:

1. A LED filament module, comprising
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;
a first connecting portion connected with the first conductive electrodes;
a second connecting portion connected with the second conductive electrodes;
a plurality of filament brackets, wherein the filament brackets are connected between the first connecting portion and the second connecting portion, and each of the LED filaments is respectively attached to each of the filament brackets,
wherein, the first connecting portion comprises insulation portions, the second connecting portion comprises insulation portions, the first connecting portion and the second connecting portion are made by conductive materials except the insulation portions, and the insulation portions of the first connecting portion and the second connecting portion are arranged in a staggered manner to allow currents to flow through each of the LED filaments in one direction.

2. The LED filament module of claim 1 , wherein one or both of the first connecting portion and the second connection portion have a torus shape.

3. The LED filament module of claim 2 , wherein at least one of the first connecting portion and the second connecting portion has an opening.

4. The LED filament module of claim 1 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the LED filaments, the first connecting portion, and the second connecting portion form a sector outline.

5. The LED filament module of claim 4 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the first connecting portion and the second connecting portion respectively have arc shapes.

6. The LED filament module of claim 5 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the arc length of the arc shape of the first connecting portion is less than that of the second connecting portion.

7. The LED filament module of claim 6 , wherein the LED filaments, the first connecting portion, and the second connecting portion form a shape of frustum of a cone.

8. The LED filament module of claim 1 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the LED filaments, the first connecting portion, and the second connecting portion form a rectangular outline.

9. The LED filament module of claim 8 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the first connecting portion and the second connecting portion respectively have straight shapes.

10. The LED filament module of claim 9 , wherein while the LED filaments, the first connecting portion, and the second connecting portion are flatted, the straight length of the straight shape of the first connecting portion is substantially equal to that of the second connecting portion.

11. The LED filament module of claim 10 , wherein the LED filaments, the first connecting portion, and the second connecting portion form a shape of column.

12. The LED filament module of claim 1 , wherein the LED filaments, the first connecting portion, and the second connecting portion are formed in one piece.

13. The LED filament module of claim 1 , wherein the LED filaments, the first connecting portion, and the second connecting portion are a jig-shaped member.

14. The LED filament module of claim 1 , wherein each of the filament brackets respectively extends along an axial direction of the respective one of the LED filament.

15. The LED filament module of claim 14 , wherein the filament brackets comprise materials with conductibility.

16. The LED filament module of claim 14 , wherein each of the filament brackets respectively extends along the axial direction of the respective one of the LED filament from the first connecting portion to the second connecting portion.

17. The LED filament module of claim 14 , wherein each of the filament brackets is separated into two parts comprising a top filament bracket and a bottom filament bracket, the top filament brackets are connected with the first connecting portion, the bottom filament brackets are connected with the second connecting portion, the length of the top filament bracket and the bottom filament bracket is less than a half of the length of the LED filament.

18. The LED filament module of claim 1 , wherein the LED filaments are equally spaced or the LED filaments are unequally spaced.

19. The LED filament module of claim 14 , wherein the first connecting portion and the second connecting portion are made by conductive materials, and each of the filament brackets comprises an insulation portion to prevent currents from flowing through the filament brackets.

20. The LED filament module of claim 14 , wherein the first connecting portion and the second connecting portion are made by conductive materials, each of the filament brackets is separated into two parts comprising a top filament bracket and a bottom filament bracket, the top filament brackets are connected with the first connecting portion, the bottom filament brackets are connected with the second connecting portion, and the top filament bracket and the bottom filament bracket of each of the filament brackets are physically separated to prevent currents from flowing through the filament brackets.

21. The LED filament module of claim 1 , wherein each of the LED filaments comprises:
a plurality of LED chips, electrically connected together;
two conductive electrodes, disposed corresponding to the plurality of LED chips, the conductive electrodes being electrically connected with the plurality of LED chips; and
a flexible light conversion coating, coating 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 light conversion coating comprising an adhesive and a plurality of particles, the plurality of particles at least comprises phosphors.

22. The LED filament module of claim 21 , wherein a percentage of the particles in the flexible light conversion coating is greater than a percentage of the adhesive in the flexible light conversion coating.

23. The LED filament module of claim 22 , wherein the flexible light conversion coating further comprises at least one thermal conduction path formed by at least a part of the particles which are adjacent to and contact one another, the at least one thermal conduction path has an internal end and an external end, the internal end of the at least one thermal conduction path contacts one of the LED chips, and the external end of the at least one thermal conduction path contacts the surface of the flexible light conversion coating away from the LED chips and is exposed from the surface of the flexible light conversion coating.

24. The LED filament module of claim 1 , wherein each of the LED filaments comprises:
a plurality of LED chips electrically connected together;
two conductive electrodes disposed corresponding to the plurality of LED chips, the conductive electrodes being electrically connected with the plurality of LED chips; and
a flexible light conversion coating comprising a top layer and a base layer, the flexible ligh

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

• H10W90/753

  between laterally-adjacent chips · CPC title

• H10W90/00

  Package configurations · CPC title

• F21V19/003

  Fastening of light source holders, e.g. of circuit boards or substrates holding light sources · CPC title

• F21K9/90

  Methods of manufacture · CPC title