a led filament

A technology of LED filament and LED chip, which is applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problems of poor filament protection, poor heat dissipation performance, and poor uniformity, so as to improve photoelectric performance, service life, and good light uniformity And the effect of improving stability and vulcanization resistance

Active Publication Date: 2019-08-27
XUYU OPTOELECTRONICSSHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an LED filament with high light efficiency, good heat dissipation performance and good filament protection performance, aiming to solve the problems of low light efficiency, poor uniformity, poor heat dissipation performance and poor filament protection of the existing LED filament

Method used

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  • a led filament

Examples

Experimental program
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Embodiment 1

[0042] A kind of LED filament, comprising:

[0043] LED filament base, the LED filament base includes a filament base and several LED chips arranged on the filament base, wherein the filament base includes a cylindrical base, and the outer surface of the filament base is provided with several grooves; LED The chip is arranged in the groove of the filament base, and the LED chips radially distributed on the outer wall of the filament base are electrically connected;

[0044] A flexible glass film, the flexible glass film is seamlessly coated on the surface of the groove, wherein the flexible glass film is a flexible fluorescent glass film, the flexible fluorescent glass film contains glass powder, fluorescent powder and graphene, and the In the flexible fluorescent glass film, the weight ratio of the glass powder, fluorescent powder and graphene is 5:1:0.3.

[0045] Wherein, the filament substrate is a copper / graphene composite substrate, wherein graphene accounts for about 10...

Embodiment 2

[0047] The difference from Example 1 is that the filament substrate is a SiC / graphene composite substrate, wherein graphene accounts for about 10%.

Embodiment 3

[0049] The difference from Example 1 is that the filament substrate is an AlN / graphene composite substrate, wherein graphene accounts for about 10%; in the flexible fluorescent glass film, the weight ratio of the glass powder, phosphor powder and graphene is 4:1:0.3.

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Abstract

Provided is an LED filament, comprising: an LED filament substrate, the LED filament substrate comprising a filament substrate and several LED chips arranged on the filament substrate, the filament substrate comprising a cylindrical substrate, an outer surface of the filament substrate being provided with several recesses, the LED chips being arranged in the recesses of the filament substrate, the LED chips radially distributed on the outer wall of the filament substrate being electrically connected; a flexible glass film, the flexible glass film being seamlessly coated on surfaces of the recesses, the flexible glass film being a flexible fluorescent glass film, the flexible fluorescent glass film containing a glass powder, a fluorescent powder and graphene, the weight ratio of the glass powder, the fluorescent powder and the graphene in the flexible fluorescent glass film being (5-6):1:(0.1-0.5).

Description

technical field [0001] The invention belongs to the field of LED lighting, and in particular relates to an LED filament. Background technique [0002] Since the 20th century, LED has quickly become popular in the lighting market due to its advantages of energy saving, environmental protection, long life, and small size. LED has become the mainstream lighting source in the future, and is widely used in commercial lighting, industrial lighting, outdoor lighting and other fields. In 2008, Japan's Ushio Light Source launched a bulb-type lamp with an incandescent prototype configured with LEDs. "LED Filament Light Bulbs" began to emerge. Since the first launch and mass production of Japan's Ushio Light Source, candle lamps and bulb lamps with LED filaments as light sources have gradually been favored by more and more consumers in the market. [0003] In recent years, research on LED filaments has become more and more extensive. At present, LED filaments mainly have problems such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50H01L33/56H01L33/64H01L25/13
CPCH01L25/13H01L33/505H01L33/56H01L33/641
Inventor 林金填蔡金兰冉崇高陈磊李超
Owner XUYU OPTOELECTRONICSSHENZHEN CO LTD
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