CN210118728U

CN210118728U - LED heat dissipation device

Info

Publication number: CN210118728U
Application number: CN201920465481.1U
Authority: CN
Inventors: 梁璐; 王长宏; 冯杰; 赵雨亭
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-02-28
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a LED heat abstractor, including shell annular fin body, interior metal mesh, internal insulation net and the module of discharging, interior metal mesh is equipped with a plurality of discharge needles on the net, shell annular fin body, interior metal mesh and internal insulation net are in proper order by outer to interior spacer sleeve establish arrange, shell annular fin body electrical connection the receiving electrode of the module of discharging, interior metal mesh electrical connection the projecting pole of the module of discharging. The utility model discloses make the electric energy directly change into air kinetic energy, produce ion wind, combine ion wind cooling technology and fin heat dissipation technology, combine LED two kinds of active heat dissipation of traditional radiating mode and passive form heat dissipation ingeniously simultaneously, improved the radiating efficiency, effectively solve the current aluminum product radiator of taking the fin to the unsatisfactory problem of LED chip radiating effect.

Description

LED heat dissipation device

Technical Field

The utility model belongs to the technical field of the electron device heat dissipation, more specifically say, relate to a LED heat abstractor.

Background

With the rapid development of the related technologies, the power of the LED increases more and more rapidly, the generated heat flux density is higher and higher, the demand of the LED on innovative and advanced heat dissipation technologies is more and more urgent, and the demand on the heat dissipation technologies is also higher and more. The conventional heat dissipation method is to use active heat dissipation mainly using a fan and passive heat dissipation mainly using aluminum heat dissipation fins, or to use both heat dissipation methods. However, the rotating speed of the fan is limited, noise is not small, the thickness ratio of the radiating fins is limited, and the radiating effect is not ideal and needs to be further improved.

Therefore, the development of an LED heat dissipation device with simple structure, small size, compactness, low energy consumption, no moving parts, zero noise, high heat exchange efficiency and good cooling effect is a problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a LED heat abstractor, this LED heat abstractor simple structure, heat exchange efficiency is high, can effectively dispel the heat to the LED chip.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a LED heat abstractor, specifically, includes shell annular fin body, interior metal mesh, interior insulation net and the module of discharging, interior metal mesh is equipped with a plurality of discharge needles on the net, shell annular fin body, interior metal mesh and interior insulation net are in proper order by outer to interior distance sleeve establish arrange, shell annular fin body electrical connection the receiving pole of the module of discharging, interior metal mesh electrical connection the projecting pole of the module of discharging, the production of this design adoption prior art well ionic wind is derived from the corona principle of discharging: due to the action of high voltage electricity of the discharge module, the electric field intensity near the needle electrodes of the discharge needles of the inner metal net is extremely high, so that a large number of air molecules in the area are ionized, and the electric field outside the area is weaker, so that the ionization process is not generated; under the action of an electric field, charged particles move directionally and collide with uncharged neutral particles in the movement process, partial kinetic energy is transferred to the neutral particles, so that the neutral particles move directionally together, namely ion wind is generated.

Preferably, the annular fin body of the shell comprises a shell body, a plurality of external fins and a plurality of internal fins, wherein the external fins and the internal fins are circumferentially and uniformly distributed at intervals outside and inside the shell body respectively. The length of the internal fins is shorter than that of the external fins, the shell body is further provided with a plurality of radiating holes, and the radiating holes are communicated with the inside and the outside of the shell body.

Preferably, the discharge module includes an electrically connected power source and a high voltage conversion device.

Preferably, the diameter of the inner insulating net is slightly smaller than that of the inner metal net with the multiple pins, and the LED chip placed in the inner insulating net is isolated from and in contact with the inner metal net with the multiple pins.

Preferably, all the discharge needles on the inner metal mesh are uniformly distributed and point to the annular fin body of the outer shell along the radius direction, the needle lengths of all the discharge needles are consistent, and the inner metal mesh is in good metal contact with the discharge needles on the inner metal mesh.

Preferably, the minimum interval between the outer shell annular fin body and the inner metal mesh (the distance between the needle point of the discharge needle on the inner metal mesh and the top end of the inner fin of the outer shell annular fin body) is 2mm-8mm, and the minimum interval between the inner metal mesh and the inner insulating mesh (the distance between the inner wall of the inner metal mesh and the outer wall of the inner insulating mesh) is 2mm-3 mm.

Preferably, the wind speed measuring device further comprises an anemoscope and a display screen, wherein the anemoscope is used for detecting the wind speed of the ion wind generated between the shell annular fin body and the inner metal net, and the display screen is used for displaying data of the wind speed of the ion wind.

The utility model has the advantages that: the design structure is simple, the use is convenient, and the heat dissipation effect is good; the LED chip mainly utilizes high enough voltage to be added between two groups of electrodes with different curvature radiuses, air between the electrodes is ionized, and directional airflow formed under the action of an electric field carries out forced convection heat dissipation on the annular fin body of the shell, so that the heat dissipation effect of the LED chip is effectively improved.

Drawings

Fig. 1 is an exploded schematic view of a structural plane of an embodiment 1 of an LED heat dissipation device provided in the present invention;

FIG. 2 is a perspective view of the configuration of the annular fin body of the outer shell of example 1;

FIG. 3 is a schematic circuit diagram of embodiment 1;

fig. 4 is a perspective view of the structure of the annular fin body of the outer shell in embodiment 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a LED heat abstractor, this LED heat abstractor simple structure, heat exchange efficiency is high, can effectively dispel the heat to the LED chip.

Example 1

As shown in fig. 1 to 3, an LED heat dissipation device includes a housing ring fin body 1, an inner metal mesh 2, an inner insulating mesh 3, and a discharge module, where the housing ring fin body 1 includes a housing body, a plurality of outer fins 11 and a plurality of inner fins 12, the outer fins 11 and the inner fins 12 are circumferentially and uniformly distributed outside and inside the housing body at intervals, respectively, the inner fins 12 are shorter and do not contact with each other, and the outer fins 11 are longer; a plurality of discharge needles 21 are arranged on the inner metal net 2, all the discharge needles 21 on the inner metal net 2 are uniformly distributed and point to the outer shell annular fin body 1 along the radius direction, the needle lengths of all the discharge needles 21 are uniform, and the inner metal net 2 is in good metal contact with the discharge needles 21 on the inner metal net 2; the discharging module comprises a power supply and a high-voltage conversion device which are electrically connected, the outer shell annular fin body 1, the inner metal net 2 and the inner insulating net 3 are sequentially arranged in a sleeved mode from outside to inside at intervals, the outer shell annular fin body 1 is electrically connected with a receiving electrode of the high-voltage conversion device, and the inner metal net 2 is electrically connected with an emitting electrode of the high-voltage conversion device; the diameter of the inner insulating net 3 is slightly smaller than that of the inner metal net, and the LED chips placed in the inner insulating net are in insulated contact with the inner metal net.

Preferably, the minimum distance between the outer shell ring fin body 1 and the inner metal mesh 2 (the distance between the needle point of the discharge needle 21 on the inner metal mesh 2 and the top end of the inner fin 12 of the outer shell ring fin body 1) is 4mm to 6mm, and the minimum distance between the inner metal mesh 2 and the inner insulating mesh 3 (the distance between the inner wall of the inner metal mesh 2 and the outer wall of the inner insulating mesh 3) is 2.5 mm.

Example 2

On the basis of the embodiment 1, holes can be uniformly drilled at the root gaps of the external fins 11 of the annular fin body 1 of the shell to form a plurality of heat radiation holes 13, and the heat radiation holes 13 are communicated with the inside and the outside of the shell body 1, so that the receiving electrode of the ion wind cooling device is changed from a fin-plate type to a fin-net type, the air flow of forced convection heat radiation is enhanced, and the heat radiation is effectively enhanced.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made in the claims and the description of the new invention are also within the scope of the present invention.

Claims

1. The utility model provides a LED heat abstractor, its characterized in that, includes shell annular fin body, interior metal mesh, interior insulating net and the module of discharging, be equipped with a plurality of discharge needles on the interior metal mesh, shell annular fin body, interior metal mesh and interior insulating net are in proper order and establish the arrangement by outer to interior distance sleeve, shell annular fin body electrical connection the receiving electrode of module of discharging, interior metal mesh electrical connection the emitter of module of discharging.

2. The LED heat sink according to claim 1, wherein the housing ring fin body comprises a housing body, a plurality of external fins and a plurality of internal fins, and the external fins and the internal fins are circumferentially and uniformly distributed at intervals outside and inside the housing body, respectively.

3. The LED heat sink of claim 1, wherein the discharge module comprises an electrically connected power source and a high voltage conversion device.

4. The LED heat sink of claim 1, wherein the spacing between the outer shell ring fin body and the inner metal mesh is 2mm-8 mm.

5. The LED heat sink of claim 1, wherein the inner metal mesh is spaced from the inner insulating mesh by 2mm to 3 mm.

6. The LED heat sink of claim 2, wherein the inner fins are shorter in length than the outer fins.

7. The LED heat sink according to claim 2, wherein the housing body further comprises a plurality of heat dissipating holes.