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LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins

A heat dissipation fin and micro-tooth technology, applied in the field of LED heat dissipation fins with surface micro-tooth structure and its preparation, can solve problems such as insufficient heat dissipation performance, achieve simple and economical manufacturing process, high replication ratio of array structure, and improve convection conversion The effect of heat capacity

Pending Publication Date: 2017-02-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the insufficient heat dissipation performance of existing LED fins and the defects in traditional machining and manufacturing, the present invention provides an LED heat dissipation fin with a surface micro-tooth structure and a preparation method thereof

Method used

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  • LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins
  • LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins
  • LED heat-radiating fins of surface micro-tooth structures and preparation method of LED heat-radiating fins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of LED cooling fins with an array of frusto-conical micro-tooth structures on the surface

[0041] (1) Preparation of resist template: use AutoCAD software to design array circular graphics, and print black opaque array circular graphics on transparent plate-making film by inkjet printing to make resist template; the obtained array circle The schematic diagram of the resist template with the shape structure is shown in figure 1 shown;

[0042] (2) Surface polishing and degreasing treatment are carried out on the flat fins made of copper, and the photoresist dry film is flattened and bonded on the surface of the fins without air bubbles through a thermoplastic sealing machine; the resist template is aligned and placed On the copper fin with a photoresist dry film on the surface, press the resist template with a 1mm thick transparent carrier film, place it on the bottom of the portable UV curing machine for UV curing, the UV curing power is 1kw, and the main ...

Embodiment 2

[0052] Preparation of LED cooling fins with an array of tetragonal truncated micro-tooth structures on the surface

[0053] (1) Preparation of anti-corrosion template: use AutoCAD software to design array rectangular graphics, and print black opaque array rectangular graphics on transparent plate-making film by inkjet printing to make anti-corrosion templates;

[0054] (2) Surface polishing and degreasing treatment are carried out on the flat fins made of copper, and the photoresist dry film is flattened and bonded on the surface of the fins without air bubbles through a thermoplastic sealing machine; the resist template is aligned and placed On the copper fin with a photoresist dry film on the surface, press the resist template with a 1mm thick transparent carrier film, place it on the bottom of the portable UV curing machine for UV curing, the UV curing power is 1kw, and the main UV peak is 365nm. The distance is 120mm, and the curing time is 12s;

[0055] (3) The photoresi...

Embodiment 3

[0060] Preparation of LED cooling fins with array groove micro-tooth structure on the surface

[0061] (1) Preparation of anti-corrosion template: use AutoCAD software to design array bar graphics, and print black opaque array bar graphics on transparent plate-making films by inkjet printing to make anti-corrosion templates;

[0062] (2) Surface polishing and degreasing treatment are carried out on the fins made of copper, and the photoresist dry film is flattened and bonded on the surface of the fins without air bubbles through a thermoplastic sealing machine; the anti-corrosion template is aligned and placed on the On the copper fin with a photoresist dry film on the surface, press the resist template with a 1mm thick transparent carrier film, place it on the bottom of the portable UV curing machine for UV curing, the UV curing power is 1kw, the main UV peak is 365nm, and the irradiation distance 100mm, curing time is 10s;

[0063] (3) The photoresist dry film special devel...

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Abstract

The invention discloses LED heat-radiating fins of surface micro-tooth structures and a preparation method of the LED heat-radiating fins. According to the LED heat-radiating fins, arrayed circular truncated cones, arrayed quadrangular truncated pyramids or arrayed grooves serve as the surface micro-tooth structures of the LED heat-radiating fins; through the surface micro-tooth structures, the heat-radiating area is effectively enlarged and the radiating capacity of the LED heat-radiating fins is improved; the convective heat exchange capacity of the LED heat-radiating fins is improved by utilizing a flow turbulent effect of the surface micro-tooth structures; and the surface micro-tooth structures are formed through chemical etching. By adoption of the LED heat-radiating fins disclosed by the invention, the temperature of an LED packaging device is effectively lowered and the service life of the LED packaging device is prolonged; and the surface micro-tooth structures manufactured in a chemical etching manner have the advantages of being high in arrayed structure reproduction ratio, short in manufacturing period, and simple and economical in manufacturing process.

Description

technical field [0001] The invention relates to the field of optical element manufacturing, in particular to an LED cooling fin with a surface micro-tooth structure and a preparation method thereof. Background technique [0002] LED is a semiconductor that can convert electrical energy into visible light. It has changed the principle of tungsten filament luminescence of incandescent lamps and the three-based toner luminescence of fluorescent energy-saving lamps. The use of electric energy luminescence has long life, high luminous efficiency, no radiation, and low power consumption. With the introduction of energy-saving and green lighting concepts, LEDs are gradually introduced into lighting fixtures as light sources. [0003] At present, incandescent bulbs or fluorescent fluorescent lamps are basically used as light sources for daily lighting such as daily bulbs and fluorescent lamps. However, the electro-optical conversion efficiency of incandescent bulbs and fluorescent f...

Claims

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Application Information

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IPC IPC(8): F21V29/503F21V29/74F21V29/89C23F1/02C23F1/14F21Y115/10
CPCF21V29/503F21V29/74F21V29/89C23F1/02C23F1/14
Inventor 汤勇李志李宗涛林庆宏梁观伟颜才满万珍平
Owner SOUTH CHINA UNIV OF TECH
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