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Large-power blue light LED remote exciter lamp cover special-purposed electrostatic spraying yellow fluorescent powder composite white light paint

A technology of yellow phosphor and remote excitation, which is applied in the field of coatings, can solve the problems of reduced luminous energy of yellow phosphor and decreased luminous efficiency of phosphor, and achieves significant technological progress, soft light, and difficult to remove the film.

Inactive Publication Date: 2012-07-25
XIANGLING LED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the temperature generated by the working current continues to rise, the luminous energy of the yellow phosphor is reduced. When the device temperature continues to rise > 80 ° C, the luminous efficiency of the phosphor will also drop sharply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-power blue LED remote excitation electrostatic spraying lampshade special yellow fluorescent powder yellow light-emitting paint, its special feature is that it is calculated by weight percentage, including:

[0026] 60-80% of the finished thermosetting polyester resin transparent powder coating is used as the base material.

[0027] 10-25% YAG yellow phosphor is used as a yellow light emitting pigment.

[0028] The rest are auxiliary fillers. 2-3% PMM light diffusion powder, 1-5% starch silica powder, 0.2-0.5% fumed silica powder.

[0029] Looking further, the finished product of the thermosetting polyester resin transparent powder coating is first passed through a compound internal circulation classification jet mill: at 0.7Mpa airflow pressure, the flow rate is 6m 3 / min, through the superfine impeller of 6500r / min, ultrafine into 4000 mesh polyester resin transparent powder particles, and then with the quality: 2700-3300K. Ra=49.0, X=0.487, Y=0.487, main wa...

Embodiment 2

[0031] A high-power blue LED remote excitation electrostatic spraying lampshade special yellow fluorescent powder yellow light-emitting paint, its special feature is that it is calculated by weight percentage, including:

[0032] 60-80% of the finished thermosetting polyester resin transparent powder coating is used as the base material.

[0033] 10-25% YAG yellow phosphor is used as a yellow light emitting pigment.

[0034] The rest are auxiliary fillers. 2-3% PMM light diffusion powder, 1-5% starch silica powder, 0.2-0.5% fumed silica powder.

[0035] Looking further, the finished product of the thermosetting polyester resin transparent powder coating is first passed through a compound internal circulation classification jet mill: at 0.7Mpa airflow pressure, the flow rate is 6m 3 / min, through the 6500r / min impeller superfine, superfine into 4000 mesh polyester resin transparent powder particles, and then with the quality: 4000-5000K, Ra=40.0, X=0.455±0.005, Y=0.528±0.005,...

Embodiment 3

[0037] A high-power blue LED remote excitation electrostatic spraying lampshade special yellow fluorescent powder yellow light-emitting paint, its special feature is that it is calculated by weight percentage, including:

[0038] 60-80% of the finished thermosetting polyester resin transparent powder coating is used as the base material.

[0039] 10-25% YAG yellow phosphor is used as a yellow light emitting pigment.

[0040] The rest are auxiliary fillers. 2-3% PMM light diffusion powder, 1-5% starch silica powder, 0.2-0.5% fumed silica powder.

[0041] Looking further, the finished product of the thermosetting polyester resin transparent powder coating is first passed through a compound internal circulation classification jet mill: at 0.7Mpa airflow pressure, the flow rate is 6m 3 / min, via 6500r / min impeller superfine, superfine into 4000 mesh polyester resin transparent powder particles, and then with the quality: 5500-6000K, Ra=35.0, X=0.436±0.005, Y=0.544±0.005, Dominant...

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Abstract

The invention relates to large-power blue light LED remote exciter lamp cover electrostatic spraying yellow fluorescent powdery paint. With the paint, yellow-converted composite white light can be emitted. The paint is characterized in that a thermo-set polyester resin transparent powdery paint finished product is processed by using a Fluent-type inner-graded jet mill, such that a composition of yellow fluorescent powder yellow-light-emitting powdery paint is synthesized by homogenization; the composition is extruded by using a double-screw extruder, and is crushed by using a high-speed crusher, such that a YAG yellow fluorescent powder yellow-light-emitting powdery paint finished product is obtained. With the paint, a formed yellow fluorescent powder coating has certain scraping resistance. When an LED lamp cover is packaged, defilming is prevented. Under the remote exciting of a blue light LED chip, the conversion rate of the yellow light emitted by the yellow fluorescent powder and the blue light is high, and a composite white light is gentle. Blue light LED chips of different qualities are adapted to YAG yellow fluorescent powders of different qualities, such that illumination devices of composite white light LED with different color temperatures, different color rendering indexes Ra and different luminous efficiencies 1m / w can be configured.

Description

technical field [0001] The invention relates to a paint, in particular to a paint in which a high-power blue LED remotely excites a lampshade and electrostatically sprays yellow fluorescent powder to emit yellow-converted composite white light. Background technique [0002] At present, the most widely used and mature white light LED packaging technology is a fixed blue light chip covered with YAG yellow phosphor powder. As the temperature generated by the working current continues to rise, the luminous energy of the yellow phosphor is reduced. When the temperature of the device continues to rise >80°C, the luminous efficiency of the phosphor will also drop sharply. The heat dissipation of LED packaging chips and devices always affects the light decay and service life of high-power white LEDs. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems existing in the existing project technology, to provide high-power...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D7/12C09D5/46C09D5/22F21V3/04F21V9/10F21Y101/02F21V9/40F21Y115/10
Inventor 朱德德吴政明徐颖
Owner XIANGLING LED
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