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Method for improving heat dissipation and luminous performance of LED filament lamp by using helium gas

A technology for LED filament lamps and luminous performance, which is applied to semiconductor devices of light-emitting elements, light sources, lighting and heating equipment, etc. warm effect

Inactive Publication Date: 2019-01-08
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it is completely wrapped by phosphor, the heat dissipation effect of the filament strip becomes worse when it is working. The heat dissipation problem is also the main reason for restricting the power of the LED filament strip.

Method used

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  • Method for improving heat dissipation and luminous performance of LED filament lamp by using helium gas
  • Method for improving heat dissipation and luminous performance of LED filament lamp by using helium gas
  • Method for improving heat dissipation and luminous performance of LED filament lamp by using helium gas

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Embodiment Construction

[0019] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0020] The invention provides a method of using helium to improve the heat dissipation and luminous performance of LED filament lamps, specifically:

[0021] Fill the LED lamp cavity with 50%-90% helium, and detect the junction temperature and luminous flux of the LED lamp in real time.

[0022] In the entire LED bulb shell, when the helium gas flows through the high-temperature working LED light bar, the heat will be transferred from the light bar to the helium gas, and the density of the heated helium gas is lower than that of the helium gas with a lower surrounding temperature. So it expands and rises, transfers heat to the glass bulb at the bulb, then cools and sinks, and starts the next cycle. During the whole process, the heat conduction of the gas follows Fourier's law;

[0023] Convective heat transfer refers to the energy exchange that o...

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Abstract

The invention relates to a method for improving heat dissipation and luminous performance of an LED filament lamp by using helium gas. The method specifically comprises the following steps that 50%-90% of helium gas is injected into an LED lamp cavity. According to the method, the helium gas with a certain proportion is injected into an LED lamp, due to the fact that the helium gas is an inert gasand has a high thermal conductivity coefficient, the junction temperature of the LED lamp is reduced, the luminous flux of the LED lamp is improved, then the heat dissipation performance and the luminous performance of the LED lamp are adjusted, so that the color temperature of the LED lamp is controlled, and the service life of the LED lamp is further prolonged.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a method for improving heat dissipation and luminous performance of LED filament lamps by using helium gas. Background technique [0002] The birth of LED filament lamp not only caters to the public's nostalgia for traditional lamps, but also has a high conversion rate. A 2W B35 candle lamp has the same luminous flux as a 25W incandescent lamp. It is true that the LED filament lamp industry is still facing the problems of high manufacturing cost and low lamp power. Because of the rapid development of filament lamps in recent years, it is true that the LED filament lamp industry is still facing high manufacturing costs and low lamp power. However, with the in-depth research and improvement of related fields such as LED filament manufacturing process, LED filament application technology, glass bubble sealing gas filling technology, and flicker-free power supply technology, the gap bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V29/50F21Y115/10
CPCF21V29/50F21Y2115/10
Inventor 陈毅湛
Owner WUYI UNIV
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