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LED filament ball steep light with high lumen maintenance

A technology of LED filament and maintenance rate, which is applied in the field of LED lighting, can solve the problems of reduced luminous flux and aggravated aging light decay, and achieve the effect of reducing light decay, reducing double costs, and improving luminous flux maintenance rate

Pending Publication Date: 2017-08-18
ZHEJIANG INTELED OPTOELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The invention provides an LED filament bulb lamp with high luminous flux maintenance rate filled with oxygen and high thermal conductivity gas in the bulb shell; it solves the problems in the prior art that the luminous flux of the filament decreases and aggravates the problem of aging and light decay

Method used

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  • LED filament ball steep light with high lumen maintenance
  • LED filament ball steep light with high lumen maintenance
  • LED filament ball steep light with high lumen maintenance

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Embodiment 1

[0019] Example 1: see figure 1 , a LED filament bulb lamp with high luminous flux maintenance rate, including a closed bulb shell 10 and a lamp base 20 fixedly connected to the bulb shell 10, and a lamp post 40 fixedly connected to the lamp base 20 and inside the bulb shell 10 , the lamp post 40 is provided with an LED light source 30, the LED light source 30 forms a conductive connection with the lamp holder 20, the bulb shell 10 is filled with a mixed gas, the mixed gas contains oxygen and gas, and the volume ratio of oxygen is 0.1%-30% . The gas is an inert gas. In an oxygen-free environment, the ITO (indium tin oxide) layer in the LED chip undergoes the following chemical reactions, InO 2 ⇋InO+½O 2 SnO 2 ⇋SnO+½O 2 , adding oxygen to the gas can prevent the reduction of the ITO layer in the LED chip in the inert gas, thereby improving the luminous flux maintenance rate of the filament aging. At present, the 1000H aging light of the filament with better performance is ...

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Abstract

The invention relates to a LED filament ball steep light with high lumen maintenance. The LED filament bulb light comprises an inclosed bulb shell and a bulb holder, wherein the bulb holder and the bulb shell are connected mutually and fixedly, a light staff, located inside the bulb shell, is fixedly connected on the bulb holder, and an LED light source is arranged on the light staff. The LED filament ball steep light is characterized in that the LED light source and the bulb holder form electrical connection, the bulb shell is filled with mixed gas, and the mixed gas comprises oxygen and high thermal conductivity gases, wherein the volume ratio of oxygen is 0.1% to 30%. The oxygen added into the gas can prevent reducing of the transmittance of ITO due to the fact that an ITO layer in an LED chip is reduced in gas in an oxygen-free environment in the aging process, therefore the lumen maintenance of filament aging is enhanced, and brightness decay is reduced. 1000H aged light of a filament with a good performance is kept at about 97% at present, 1000H lumen maintenance of a bulb with conventional gas is kept at about 96%, and the 1000H lumen maintenance of a bulb with gas added with oxygen in the scheme is kept at about 98.5%.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to an LED filament bulb lamp with high lumen maintenance rate. Background technique [0002] At present, LED filament bulbs are first vacuumed in the airtight bulb, and then gas with good performance is introduced to increase the heat dissipation of the filament and prolong the service life. However, this protective gas is an oxygen-free atmosphere. Since the ITO (indium tin oxide) layer in the LED chip is a transparent conductive layer and a metal mixture with various valence states, it is easy to decompose in an oxygen-free environment to produce black suboxide. Indium and tin oxide release oxygen, and the resulting black indium oxide and tin oxide have a much lower light transmittance than indium tin oxide, which leads to a decrease in the luminous flux of the filament and aggravates the aging light decay. Contents of the invention [0003] The invention provides an LED f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/232F21K9/238F21K9/90H05B33/08H05B44/00
CPCF21K9/90H05B45/37Y02B20/30
Inventor 林成通黄熙
Owner ZHEJIANG INTELED OPTOELECTRONICS TECH
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