LED filament and LED light bulb having the same

• US 10,627,098 B2
• Filed: 05/30/2018
• Issued: 04/21/2020
• Est. Priority Date: 06/10/2015
• Status: Active Grant

• Current Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Original Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
• Inventors: Jiang, Tao, Jiang, Wenjang, Xu, Hong
• Primary Examiner(s): Savusdiphol, Paultep
• Application Number:
  US15/992,786
• Publication Number:
  US 20180274773A1
• Time in Patent Office: 692 Days
• Field of Search: 36224902, 36224906
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 33/501 characterised by the materials, e.g. binder

Abstract

A LED filament comprises a frame, a metal electrode, a fasten member, a second fasten member, at least one LED chip. The frame is a bottomless frame and the metal electrode is disposed on one side of the frame. The first fasten member is formed on the frame and the second fasten member formed on the metal electrode. The metal electrode having the second fasten member is placed on the first fasten member of the frame, thereby fastening the metal electrode on the frame; wherein one of the first fasten member and the second fasten member is a protrusion while the other one is a hole. The at least one LED chip disposed inside the frame and electrically connecting to the metal electrode.

Claims

1. A LED filament, comprising:

a frame, wherein the frame is a bottomless frame;

a metal electrode disposed on one side of the frame;

a first fasten member formed on the frame and a second fasten member formed on the metal electrode;

wherein the metal electrode having the second fasten member is placed on the first fasten member of the frame, thereby fastening the metal electrode on the frame;

wherein one of the first fasten member and the second fasten member is a protrusion while the other one is a hole; and

at least one LED chip disposed inside the frame and electrically connecting to the metal electrode.

2. The LED filament as claimed in claim 1, wherein the frame includes two holding side and two non-holding sides, and the metal electrode is disposed on one of the two holding sides.

3. The LED filament as claimed in claim 2, further wherein a holding platform is formed on the holding side that the metal electrode disposed on.

4. The LED filament as claimed in claim 2, wherein the holding platform is a concave.

5. The LED filament as claimed in claim 1, wherein the frame includes a plurality of auxiliary support, protruded from the two non-holding sides of the transparent frame to support the at least one LED chip.

6. The LED filament as claimed in claim 1, further comprising a wire electrically connecting the at least one LED chip to the metal electrode.

7. The LED filament as claimed in claim 1, further comprising a gel wrapping the at least one LED chip and the wire inside the frame.

8. The LED filament as claimed in claim 1, further comprising an auxiliary support for supporting the at least one LED chip and the wire.

9. The LED filament as claimed in claim 1, wherein the material of the frame is a thermostable and light transmissive material.

10. The LED filament as claimed in claim 1, wherein each sides of the at least one LED chip contacts gel comprising phosphor.

11. A LED light bulb, comprising:

a bulb housing;

a bulb base connected to the bulb housing;

a driving circuit disposed in the bulb base; and

an LED filament disposed inside the bulb housing and electrically connected the driving circuit,

wherein the LED filament comprises a frame, a metal electrode disposed on one sides of the frame, a first fasten member formed on the frame and a second fasten member formed on the metal electrode, at least one LED chip disposed inside the frame and electrically connecting to the metal electrode;

wherein the metal electrode having the second fasten member is placed on the first fasten member of the frame, thereby fastening the metal electrode on the frame;

wherein one of the first fasten member and the second fasten member is a protrusion while the other one is a hole.

12. The LED light bulb as claimed in claim 11, wherein the frame includes two holding side and two non-holding sides, and the metal electrode is disposed on one of the two holding sides.

13. The LED light bulb as claimed in claim 12, further wherein a holding platform is formed on the holding side that the metal electrode disposed on.

14. The LED light bulb as claimed in claim 12, wherein the holding platform is a concave.

15. The LED light bulb as claimed in claim 11, wherein the frame includes a plurality of auxiliary support, protruded from the two non-holding sides of the transparent frame to support the at least one LED chip.

16. The LED light bulb as claimed in claim 11, further comprising a wire electrically connecting the at least one LED chip to the metal electrode.

17. The LED light bulb as claimed in claim 11, further comprising a gel wrapping the at least one LED chip and the wire inside the frame.

18. The LED light bulb as claimed in claim 11, further comprising an auxiliary support for supporting the at least one LED chip and the wire.

19. The LED light bulb as claimed in claim 11, wherein the material of the frame is a thermostable and light transmissive material.

20. The LED light bulb as claimed in claim 11, wherein each sides of the at least one LED chip contacts gel comprising phosphor.