Flexible filament LED apparatus

Patent metadata

Field	Value
Publication number	US-11209127-B2
Application number	US-201916701876-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Dec 3, 2018
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

An LED light apparatus includes a core column, a flexible filament, a mode switch, a driver, a bulb shell and a bulb cap. The flexible filament has multiple LED modules and the core column has a central bar to support the flexible filament. The mode switch is provided for a user to select one selected mode from multiple modes manually.

First claim

The invention claimed is:

1. An LED light apparatus, comprising:
a core column having a central bar and a base, the central bar extended above the base;
a flexible filament mounted with multiple LED modules, supported and bent by the central bar for forming a three-dimension light source;
a mode switch comprising a manual switch for a user to select one selected mode from multiple modes manually;
a driver electrically connected to the mode switch for driving the multiple LED modules of the flexible filament differently according the selected mode;
a bulb shell defining a container for storing the flexible filament and the central bar; and
a bulb cap connected to the bulb shell for mounting the manual switch, wherein the central bar is made of a transparent material, wherein the central bar and the base are made of an unibody component.

2. The LED light apparatus of claim 1 , wherein the mode switch comprises an electronic switch receiving an instruction of an external device.

3. The LED light apparatus of claim 2 , wherein the manual switch is independently operated even when the electronic switch does not receive the instruction.

4. The LED light apparatus of claim 3 , wherein the instruction received by the electronic switch controls the driver to drive the multiple LED modules to turn on or turn off forming a corresponding image pattern.

5. The LED light apparatus of claim 1 , wherein the mode switch is a sliding switch for determining a mixed color temperature of the multiple LED modules.

6. The LED light apparatus of claim 1 , wherein the flexible filament has a flexible substrate mounted with the plurality of LED modules.

7. The LED light apparatus of claim 1 , wherein the flexible substrate has a thickness enough for keeping a bending shape while no external force is applied to the flexible substrate.

8. The LED light apparatus of claim 1 , wherein the multiple LED modules are connected in series as a series string, and the series string is routed so that two ends of the series string are at the same side of the flexible filament.

9. The LED light apparatus of claim 1 , wherein the flexible filament has a hook structure electrode to be plugged to a corresponding socket for receiving a driving current.

10. The LED light apparatus of claim 1 , further comprising heat dissipation gas filled in the container of the bulb shell.

11. The LED light apparatus of claim 1 , wherein the flexible filament comprises two strings of LED modules with different color temperatures connected in parallel.

12. The LED light apparatus of claim 1 , wherein the central bar is a Y shape structure for holding the flexible filament.

13. The LED light apparatus of claim 1 , further comprising a light guide and a second light source for adding light to the flexible filament.

14. The LED light apparatus of claim 1 , wherein the unibody component is made of glass.

15. The LED light apparatus of claim 14 , wherein a reflective material is attached on a surface of the central bar for enhancing light effect.

16. The LED light apparatus of claim 1 , wherein the flexible filament comprises a substrate and two fluorescent layers attached on two sides of the substrate, and thicknesses of the two fluorescent layers are not the same.

17. The LED light apparatus of claim 16 , wherein the substrate is transparent and the thicknesses of the two fluorescent layers are controlled to keep light from both sides of the flexible filament has substantially the same luminous level.

18. The LED light apparatus of claim 1 , wherein there are more than two flexible filaments with different color temperatures twisted together.

Assignees

• Xiamen Eco Lighting Co Ltd

Inventors

• Jiang Hongkui
• Liao Qingyue

Classifications

• H10W90/00

  Package configurations · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H05B45/20

  Controlling the colour of the light · CPC title

• F21Y2107/70

  on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form · CPC title

• F21K9/238

  Arrangement or mounting of circuit elements integrated in the light source · CPC title