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Omnidirectional ventilation led radiator

A technology for LED radiators and radiators, applied in lighting and heating equipment, semiconductor devices of light-emitting elements, cooling/heating devices of lighting devices, etc., can solve the problem of large wind resistance, low heat dissipation efficiency, thick radiator bottom plate and fins and other issues to achieve the effect of reducing resistance and improving heat dissipation efficiency

Inactive Publication Date: 2018-09-21
陕西锐士电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most high-power LED heat sinks are formed by aluminum extrusion or aluminum die-casting. The manufacturing process needs to heat the aluminum to soften or melt, and then shape it. After machining and surface treatment, the final shape is high energy consumption, complicated process, and expensive. Pollutant discharge, not environmentally friendly, complex manufacturing process, low production efficiency, high cost
[0003] Limited by the molding process, current high-power LED heat sinks can only be manufactured with a heat dissipation structure with horizontal one-way or vertical one-way ventilation. The heat dissipation efficiency is low, the weight of the heat sink is large, and the cost is high.
[0004] Also limited by the molding process, the current high-power LED radiator has a large windward cross-sectional area, large wind resistance, poor heat dissipation efficiency, and poor structural safety.
[0005] Extruded profiles and aluminum alloys for die-casting have low thermal conductivity (generally less than 170W / m.K), and the radiator bottom plate and fins need to be designed thicker, resulting in high radiator weight and high cost

Method used

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  • Omnidirectional ventilation led radiator
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  • Omnidirectional ventilation led radiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 2 As shown, the radiator housing 1 can also be provided with an auxiliary radiator 3 to realize multi-layer omnidirectional ventilation and heat dissipation. The heat sink 2 effectively increases the heat dissipation area and enhances air convection heat dissipation.

[0060] Further, the heat dissipation body is plate-shaped, and a high thermal conductivity flexible graphite layer 4 is provided between the heat dissipation body and the bottom surface of the radiator shell 1, utilizing the compressibility and longitudinal height of the high thermal conductivity flexible graphite layer 4 The thermal conductivity (about 25W / m.K) reduces the contact thermal resistance between layers of the bottom surface of the radiator shell 1, and utilizes the lateral ultra-high thermal conductivity of graphite (about 1000W / m.K) to quickly diffuse the heat of the LED light source and improve the heat dissipation of the radiator shell 1 ability.

[0061] Further, the hea...

Embodiment 2

[0063] Such as image 3 and Figure 4 As shown, according to different applicable occasions, the difference between embodiment 2 and embodiment 1 is that the radiator shell 1 is square, and the heat sink 2 can be arranged on the top and both sides of the square radiator shell 1 , simple in structure and easy to manufacture.

Embodiment 3

[0065] Such as Figure 5 As shown, since the surface brightness of the LED light source can reach 105~107cd / m 2 , which is 2-3 orders of magnitude higher than traditional sodium light sources, so LED street lamps must strictly control glare to meet the safety and comfort requirements of road lighting, and the main cause of glare hazards is the 75-degree clip between the vertical downward direction of the light source and the road direction The light above the angle can moderately cover the light emitted by the lamps within the range of 76-90 degrees through the radiator structure, which can simplify the design difficulty of LED street lamp light distribution, achieve excellent glare suppression effect, and improve the safety and comfort of LED street lamps; thus , the structure of the radiator housing 1 is designed as a clamp between the bottom surface of the radiator housing 1 on both sides of the LED lamp installation surface 5 and the vertical surface where the LED lamp ins...

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Abstract

The invention relates to the technical field of LED heat dissipation, and discloses an omnidirectional ventilated LED radiator, which includes a radiator shell. The top of the bottom surface of the radiator shell on the side is provided with a heat sink composed of a plurality of spaced apart heat dissipation ribs, the heat dissipation ribs are in the shape of an outwardly convex arc, and the heat dissipation ribs connected to the radiator There is a hollow structure between the shells, forming a first air passage, and a second air passage communicated with the radiator shell is provided between the adjacent heat dissipation ribs, and the two sides of the radiator shell are also The cooling fins are respectively provided. The invention has a novel structural design, can realize omnidirectional ventilation, and has the advantages of high heat dissipation efficiency, low thermal resistance, low wind resistance, low glare and low cost.

Description

technical field [0001] The invention relates to the technical field of LED heat dissipation, in particular to an omnidirectional ventilated LED radiator. Background technique [0002] At present, most high-power LED heat sinks are formed by aluminum extrusion or aluminum die-casting. The manufacturing process needs to heat the aluminum to soften or melt, and then shape it. After machining and surface treatment, the final shape is high energy consumption, complicated process, and expensive. Pollutant discharge, not environmentally friendly, complex manufacturing process, low production efficiency, and high cost. [0003] Limited by the molding process, current high-power LED heat sinks can only be manufactured with a heat dissipation structure with horizontal or vertical one-way ventilation. The heat dissipation efficiency is low, the weight of the heat sink is large, and the cost is high. [0004] Also limited by the molding process, the current high-power LED radiator has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V29/74F21V29/83F21Y115/10
Inventor 胡民浩高辉徐万俊奚健锋
Owner 陕西锐士电子技术有限公司