LED lamp based on blue light and red light chips and manufacturing method thereof

A technology of LED lights and red light chips, applied in chemical instruments and methods, optical elements for changing the spectral characteristics of emitted light, semiconductor devices of light-emitting elements, etc., to achieve the effects of cost reduction, life extension, and price reduction

Inactive Publication Date: 2010-05-05
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such an expensive price is unacceptable to ordinary consumers, so the price of LEDs must be reduced; on the other hand, indoor lighting has high requirements for the color rendering index of lights, which generally must reach more than 85. There are still some difficulties for the mainstream technology (blue chip + yellow phosphor), especially under the premise of ensuring the luminous efficiency of LED lights

Method used

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  • LED lamp based on blue light and red light chips and manufacturing method thereof
  • LED lamp based on blue light and red light chips and manufacturing method thereof
  • LED lamp based on blue light and red light chips and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1. Weigh 10g of silica gel and 5g of YAG phosphor, mix them evenly, and then coat them on the inner wall of a glass tube to control the thickness of the coating to 0.2mm, and coat this glass tube with a mixture of silica gel and phosphor Put it in an oven and cure at 200°C for 6 minutes, take it out, and after it cools, put an LED chip module equal to the length of the glass tube into the tube. The number of blue chips and red chips on the module is 30 and 30 respectively. 15 pieces, connect the chip module and the lamp cap well, and fix the lamp cap on the two sections of the glass tube to make the LED lamp. After testing, the results showed that the light decay was only 2.3%, and the color rendering index was 91.

Embodiment 2

[0025] Example 2. Weigh 10g of silica gel and 10g of YAG phosphor, mix them evenly, and coat them on the inner wall of the glass tube to control the thickness of the coating to 0.3mm, and coat this glass tube with a mixture of silica gel and phosphor Put it in an oven and cure at 160°C for 10 minutes, take it out, and after it cools, put an LED chip module equal to the length of the glass tube into the tube. The number of blue and red chips on the module is 40 and 40 respectively. 10 pieces, connect the chip module and the lamp holder, and fix the lamp holder on the two sections of the glass tube to make the LED lamp. After testing, the results showed that the light decay was only 1.9%, and the color rendering index was 90.

Embodiment 3

[0026] Example 3. Weigh 10g of silica gel and 10g of YAG phosphor, mix them evenly, and then coat them on the inner wall of the quartz tube to control the coating thickness to 0.5mm, and coat this quartz tube with a mixture of silica gel and phosphor Put it in an oven and cure at 300°C for 1 minute, take it out, and after it cools, put an LED chip module equal to the length of the quartz tube into the tube. The number of blue and red chips on the module is 40 and 40 respectively. 20 pieces, connect the chip module and the lamp cap well, and fix the lamp cap on the two sections of the quartz tube to make the LED lamp. After testing, the results showed that the light decay was only 2.2%, and the color rendering index was 91.

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Abstract

The invention relates to an LED lamp based on a blue light and a red light chips, which consists of lamp heads 1, a tube 2, a fluorescent powder coating 3 and an LED chip module 4, wherein the fluorescent powder coating is evenly coated on the inner wall of the tube, the LED chip module is arranged inside the tube and connected and fixed on the lamp heads by a circuit, and the lamp heads are fixed at the two ends of the tube; the LED chip module 4 comprises the blue light and the red light chips; and the fluorescent powder coating is the mixture of fluorescent powder and bonding agent. The LED has the advantages of low cost, long service life, simple manufacturing technique and the like, and more particularly, the color rendering property is greatly improved.

Description

Technical field [0001] The invention relates to an LED lamp, in particular to an LED lamp based on blue and red chips, belonging to the field of semiconductor lighting. Background technique [0002] As a new type of solid light source, LED (Light Emitting Diode) has developed rapidly in recent years and is now widely used in large-screen displays, traffic lights, landscape lighting, street lighting and other fields. Compared with incandescent lamps and energy-saving lamps, its main advantages are: small size, fast response, good shock resistance, long life, especially energy saving and environmental protection. [0003] At present, LED has encountered two biggest problems in the process of marching into the indoor lighting field: one is the high price; the other is the low color rendering index. While maintaining the same illuminance, the price of household LED lamps on the market is 5-10 times that of ordinary fluorescent lamps and more than 20 times that of incandescent lamps. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V19/00F21V9/10C09K11/08F21Y101/02F21V9/40F21Y115/10
Inventor 王海波张瑞西
Owner NANJING UNIV OF TECH
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