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Light source body with OFED structure and application of light source body in illumination

A technology of light source and LED chip, which is applied in the components of lighting devices, light sources, lighting devices, etc., can solve the problems of human eye damage, single wavelength, narrow spectrum, etc., and achieve the goal of reducing hazards, improving color rendering index and color purity Effect

Inactive Publication Date: 2018-02-02
深圳市欧弗德光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, no matter what kind of structure the white light LED light source adopts, there are the following defects: First, it has the technical characteristics of narrow spectrum and high brightness. It is highly irritating and easy to cause human eye damage; second, the narrow-spectrum light has poor color rendering, cannot restore the true color, and is easy to cause illusions; third, the spectrum of LED is discontinuous, the wavelength is single, and the short-wavelength The spectral energy is very high. Long-term exposure to strong light in one band will inevitably reduce the ability to distinguish other colors, and may cause problems such as color weakness.
[0009] At present, from a technical point of view, considering various factors such as the spectral continuity of the light source, color temperature, strobe, brightness distribution, blue light and red light component distribution, there is no real eye-protecting and healthy lamp in the existing market.

Method used

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  • Light source body with OFED structure and application of light source body in illumination
  • Light source body with OFED structure and application of light source body in illumination
  • Light source body with OFED structure and application of light source body in illumination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as figure 2 As shown, an LED-based light source body includes a PCB board 4 and an LED light-emitting device arranged on the PCB board 4, the LED light-emitting device includes a blue LED chip 5 and a photoluminescent layer arranged above it;

[0084] The photoluminescent layer is an encapsulating colloid 2 coated on the LED chip, the encapsulating colloid 2 is loaded in the luminescent cup 1, the coating thickness is 0.3mm, and the encapsulating colloid 2 is evenly doped with organic photoluminescence Luminescent material 6 (organic green photoluminescent material + organic yellow photoluminescent material + organic orange photoluminescent material) and an inorganic red phosphor 3 .

[0085] The emission wavelength of the blue LED chip is 470nm.

[0086] The organic green photoluminescent material is (E)-4-((cyanobenzylidene)amino)benzoic acid (for its preparation method, refer to Chinese patent application 201610307169.0); its emission wavelength is 540nm.

[...

Embodiment 2

[0093] An LED-based light source body, comprising a PCB board and an LED light-emitting device disposed on the PCB board, the LED light-emitting device comprising a blue LED chip and a photoluminescent layer disposed above it;

[0094] The photoluminescent layer is an encapsulating colloid coated above the LED chip. The encapsulating colloid is loaded in a luminous cup with a coating thickness of 0.3mm. The encapsulating colloid is evenly doped with organic green photoluminescent materials , Organic yellow photoluminescent materials, organic orange photoluminescent materials, organic red photoluminescent materials.

[0095] The emission wavelength of the blue LED chip is 470nm.

[0096] The organic green photoluminescent material is (E)-4-((cyanobenzylidene)amino)benzoic acid (for its preparation method, refer to Chinese patent application 201610307169.0); its emission wavelength is 540nm.

[0097] The organic yellow light photoluminescent material is CuBr(TPP)(DAF)·CH 3 Cl ...

Embodiment 3

[0103] It is basically the same as Example 1, the only difference is that the preparation method of the LED light-emitting device described in this example is: liquid KMT-1270 silica gel, organic green light photoluminescent material, organic yellow light photoluminescent material, organic orange light The luminescent material and the inorganic red fluorescent powder are uniformly mixed at a mass ratio of 1:0.0005:0.0005:0.0005:0.15, and then heated and cured. The heating temperature is 90° C. and the heating time is 1 hour.

[0104] The LED-based light source body described in Example 3 has image 3 The emission spectrum of eye-protecting white light shown is used for lighting. Compared with traditional white LEDs, the wavelength continuity is greatly improved, and the color temperature is 2892K, which has a good eye-protecting effect.

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Abstract

The invention relates to a light source body with an OFED structure and application of the light source body in illumination. The light source body comprises a PCB and a plurality of LED luminescent devices arranged on the PCB, wherein each of the LED luminescent devices comprises an LED chip and a photoluminescence layer arranged above the LED chip; the photoluminescence layer comprises at leastone organic photoluminescence material; and the at least one organic photoluminescence material can send light with longer wavelength under the stimulation of the LED chip. The invention further discloses illumination equipment comprising the light source body. According to the light source body, on one hand, through matching of different organic photoluminescence materials, the color rendering index and the color purity of spectrums are increased; on the other hand, with adoption of the blue ray LED chip greater than 460nm, harm of the bleu ray to human eyes is lowered, and the healthy lightsource with a real meaning is realized. According to the technical scheme, great transformation is brought to the fields including daily illumination, bright light sources, healthy eye protecting lamps and the like.

Description

technical field [0001] The invention relates to the technical field of lighting sources, in particular to a light source body with an OFED structure and its application in lighting. Background technique [0002] Since the invention of the incandescent lamp, the development of electric light source technology has a history of more than 100 years. Among them, Light emitting diode (LED) technology has the advantages of low power consumption, long life, and easy recycling. It is recognized as the best light source in the future and has won the favor of the market and consumers in the field of lighting. In the past few decades, with the continuous progress of LED materials and packaging technology, the brightness of LED products has been continuously improved, and the application has become more and more extensive. [0003] The structure of traditional white LED light sources can be roughly divided into the following three types: [0004] (1) The blue LED chip excites the yello...

Claims

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Application Information

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IPC IPC(8): F21K9/90F21K9/64F21V19/00F21V23/00F21Y115/15
CPCF21K9/20F21K9/64F21K9/90F21V19/002F21V23/005F21Y2115/10F21Y2115/15H01L25/075H01L33/504H01L33/507H01L33/52H01L33/56H01L2933/0041
Inventor 陈志宽武博李晗
Owner 深圳市欧弗德光电科技有限公司