WO2014204242A1

WO2014204242A1 - Led lighting cooling device

Info

Publication number: WO2014204242A1
Application number: PCT/KR2014/005435
Authority: WO
Inventors: 한재섭
Original assignee: 주식회사 엠티티
Priority date: 2013-06-20
Filing date: 2014-06-19
Publication date: 2014-12-24

Abstract

The present invention relates to an LED lighting cooling device that has improved air flow and is easily manufactured. The LED lighting cooling device of an LED lighting apparatus, on which a typical LED light source unit constituted by a plurality of LED devices is mounted, includes a radiation fin that is provided in the form of divided radiation fins which are vertically divided in plurality on an LED lighting mounting surface to conduct heat generated from the LED lighting mounting surface, wherein a middle portion of each of the divided radiation fins is twisted at a preset angle to form an air flow. According to the present invention, a horizontal air flow and a reciprocal air flow may be additionally added to an upward air flow that is generated in a typical radiation fin to promote natural convection, thereby improving radiation performance. Also, since the LED lighting cooling device is easily installed, the production cost and manufacturing time thereof may be reduced in comparison to LED lighting cooling devices that use existing coupling methods employing bolts, nuts, riveting, epoxy, caulking, and the like.

Description

LED lighting chiller

The present invention relates to an LED lighting cooling device that improves air flow and facilitates manufacturing, and more particularly, adds horizontal air flow to the normal vertical air flow generated between the heat radiating fins and the heat radiating fins, respectively. The heat dissipation fins of the structure that can exchange the air between the heat dissipation fins of the structure, to improve the heat dissipation performance due to natural convection compared to the same heat transfer area of the conventional, and for each LED fins cooling device easy to install will be.

LED (Light Emitting Diode) is expected to be able to replace existing light sources as next-generation eco-friendly light source because it has high light efficiency, long life and does not use environmentally harmful materials.

However, it is known that more than 80% of the power supplied to the LED light is converted to thermal energy, and the increase in temperature causes the light output to fall and the wavelength shift, and the life span is drastically reduced.

In order to solve the above problems, a heat dissipation structure using a heat pipe is used, but the heat pipe heat dissipation method applied to a conventional LED lighting cooling device is evaporated even at a low temperature when a working fluid is injected into a sealed container and vacuumed. As heat is transferred by latent heat, heat resistance generated from heat exchange is minimized, and the cooling effect is increased even with a small temperature difference, and it is also used in various cooling technologies and LED lighting.

In addition, since the heat transfer surface where the high temperature heat and the low temperature fluid is in contact with the outside of the pipe is attached to the fan can be cooled by forced convection to increase the cooling performance.

However, when a fan for forced convection is installed in the LED light, the size of the light is increased, power is consumed for operating a separate fan, and noise is generated from the fan.

As such, there is an urgent need for the development of a cooling device for LED lighting, which is excellent in heat dissipation performance and easy to install while using natural convection instead of forced convection, except for heat dissipation technology using heat pipe, which has a problem in price competitiveness. to be.

The present invention has been made to solve the above problems, an object of the present invention to facilitate the installation of the heat radiation fin, while providing a LED lighting cooling device that can realize productivity at all times and cost by minimizing the components for installation. There is.

Another object of the present invention is to add a horizontal air flow and mutual air flow in addition to the upward air flow generated in a conventional heat radiation fin to promote natural convection, thereby providing an excellent air flow heat dissipation performance.

Further objects and advantages of the present invention will be described below and will be appreciated by the embodiments of the present invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

In the LED lighting cooling device of the LED lighting device equipped with a general LED light source formed of a plurality of LED elements, the partition is installed to be divided into a plurality of vertically on the LED lighting mounting surface so that the heat generated on the LED lighting mounting surface is conducted. As the heat dissipation fin, the middle portion of the split heat dissipation fin is provided including a heat dissipation fin which is twisted at a set angle to form an air flow.

Here, the middle portion of the split heat sink fin is formed by twisting a plurality of times at a predetermined angle, and is formed by twisting in the opposite inclination direction with respect to the longitudinal direction of the split heat sink fin, respectively.

In addition, at the same time structurally fixed to the split heat radiation fins are provided further comprising a heat radiation fin including the function of the heat radiation fins.

In addition, when the LED lighting device is radial, a plurality of split radiating fins are radially installed on the LED lighting mounting surface, and a convection free space is formed in the central portion of the LED lighting device.

In another embodiment, in the LED lighting cooling device of the LED lighting apparatus equipped with a general LED light source unit formed of a plurality of LED elements, the base plate is in contact with the LED light source, the base plate is formed with a plurality of support grooves, the support It is formed in a number corresponding to the number of grooves, each side is formed with a projection, the other side is formed with a fitting groove to be fitted into the support groove is a heat dissipation fin to release heat transferred from the base plate, the heat dissipation fins A fitting hole for fitting the respective protrusions is formed to be in close contact with the base plate, and is provided including a pressure fixing plate coupled to the base plate using a coupling means in the state in which the protrusion is fitted in the fitting hole.

In addition, the contact plate is formed to be inclined downward from both sides of the bottom of the heat sink fin, the contact plate is in close contact with the base plate.

According to the present invention, by adding horizontal air flow and mutual air flow in addition to the upward air flow generated in the ordinary heat dissipation fin, the natural convection is promoted, thereby improving heat dissipation performance.

In addition, since it is easy to install, the cost is reduced and manufacturing time is reduced compared to the conventional coupling method of bolts, nuts, riveting, epoxy, caulking, and the like.

1 and 2 is a perspective view of one embodiment showing a LED lighting cooling device according to the prior art.

Figure 3a is a schematic diagram showing a circular LED lighting cooling apparatus according to the present invention.

Figure 3b is a schematic diagram showing a rectangular LED lighting cooling apparatus according to the present invention.

Figure 3c is a plan view showing a circular LED lighting cooling apparatus according to the present invention.

Figure 4a is a front view showing a heat radiation fin of the LED lighting cooling apparatus according to the present invention.

Figure 4b is a three-dimensional view showing the heat radiation fin of the LED lighting cooling apparatus according to the present invention.

Figure 4c is a schematic diagram showing the assembly of the heat dissipation fin according to the present invention.

5 is a perspective view showing the LED lighting cooling device according to another embodiment of the present invention.

6 is a plan view of FIG. 5.

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6, and unnecessary portions are taken along line A-A.

8 is a plan view showing a base plate of the LED lighting cooling apparatus according to another embodiment of the present invention.

9 is a plan view showing a pressing failure plate of the LED lighting cooling device according to another embodiment of the present invention.

10 is a perspective view showing a heat radiation fin of the LED lighting cooling device according to another embodiment of the present invention.

11 is a view showing the side structure of the heat radiation fin of the LED lighting cooling apparatus according to another embodiment of the present invention.

12 is a view showing the assembly process of the LED lighting cooling apparatus according to another embodiment of the present invention.

Before describing the various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or illustrated in the drawings. The invention can be implemented and practiced in different embodiments and can be carried out in various ways. In addition, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom" The expressions and predicates used herein with respect to terms such as "," "left", "right", "lateral", etc. are used merely to simplify the description of the present invention, and related apparatus. Or it will be appreciated that the element does not simply indicate or mean that it should have a particular direction. Also, terms such as “first”, “second”, and “third” are used in the present specification and in the appended claims for the purpose of explanation or to indicate or mean relative importance or intent. It is not intended.

The present invention has the following features to achieve the above object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Looking at one embodiment of the present invention for this purpose,

In the LED lighting cooling device of the LED lighting device equipped with a general LED light source formed of a plurality of LED elements,

Heat radiating fins 20 are installed on the LED lighting mounting surfaces to conduct heat generated from the LED lighting mounting surfaces, and vertically divided into a plurality of heat dissipating fins, the intermediate portions of each of the divided thermal radiation fins 23 being twisted at a set angle to form an air flow. It is to provide an LED lighting cooling device that improves the air flow including).

In addition, the middle portion of the split radiating fin 23 is formed by twisting a plurality of times at a set angle, it is formed by twisting in the opposite inclination direction with respect to the longitudinal direction of the split radiating fin 23, respectively.

In addition, the split heat radiation fin 23 is structurally fixed and at the same time to include a heat radiation fin 25 to include the function of the heat radiation fin.

In addition, when the LED lighting device is radial, a plurality of split radiating fins 23 are radially installed on the LED lighting mounting surface 201, and a convective free space 50 is formed at the center of the LED lighting device. .

Hereinafter, an LED lighting cooling apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 and 2 is a perspective view of one embodiment showing a LED lighting cooling device according to the prior art, generally LED lighting cooling device is composed of a LED lighting mounting portion and a heat dissipation portion.

The LED light mounting unit is equipped with an LED light source unit formed of a plurality of LED elements on the bottom surface, the LED light source unit can be disposed directly on the bottom surface of the LED light mounting unit, a plurality of LED elements are coupled The LED light source may be mounted on the bottom surface of the LED light mounting portion.

1, the heat radiation fin 20 is installed to be in thermal contact with the upper surface of the LED light mounting surface 201, the high heat generated in the LED light source is transferred to the heat radiation fin 20, the high heat generated in the LED light source is radiated. .

The heat dissipation fins 20 are formed to be stacked in plural in correspondence with the LED lighting mounting surface 201 to induce heat dissipation by natural convection. In addition, the heat dissipation fin 20 may be selectively configured in the shape of a round, square, pentagon, etc. as shown in Figure 2, it can quickly dissipate high heat generated in the LED light source.

However, the prior art according to Figure 1 or 2 is that the air flow for heat dissipation is made only by the vertical air flow by the vertical space between the heat dissipation fin and the heat dissipation fin, which is generated in the LED lighting only by natural convection by the vertical air channel In order to cool high heat, the heat radiation effect may be less than expected.

Therefore, in the present invention, to form a variety of air flow to increase the heat dissipation effect.

3 to 4 will be described in more detail with respect to the structure of the LED lighting cooling apparatus according to the present invention for increasing the heat dissipation effect.

Figure 3a is a schematic diagram showing a circular LED lighting cooling apparatus according to the present invention, Figure 3c is a plan view showing a circular LED lighting cooling apparatus according to the present invention, which will be described in detail as follows.

The heat dissipation fin 20 according to the present invention is installed by bending the lower end to thermally contact the LED lighting mounting surface 201, and vertically divided into a plurality of, the middle portion of each divided heat dissipation fin 23 divided by a set angle Then, the vertical air flow and the horizontal air flow of the LED lighting cooling device and the mutual air flow between each of the heat radiation fins are formed to be smooth.

The heat dissipation fin 20 according to the present invention has a structure for forming a smooth and optimal air flow with a minimum of air resistance flowing into the heat dissipation fin in the cold air to cool the lighting device of high heat by natural convection to be.

Figure 3b is a schematic view showing a rectangular LED lighting cooling device according to the present invention, when the LED lighting device is a quadrangle as shown in the figure, a plurality of heat radiation fins 20 in a size corresponding to the LED lighting mounting surface 201 3A, when the LED lighting apparatus is circular, as shown in FIG. 3A, a plurality of radiating fins 20 are radially installed on the LED lighting mounting surface 201, and a convection free space 50 is formed at the center portion.

Figure 4a is a front view showing the heat dissipation fin of the LED lighting cooling apparatus according to the present invention, Figure 4b is a three-dimensional view showing the heat dissipation fin of the LED lighting cooling apparatus according to the present invention, Figure 4c is a schematic view showing the assembly of the heat dissipation fin according to the present invention. to be.

The heat dissipation fin 20 according to the present invention is formed by twisting the middle portion of the split heat dissipation fin 23 at a set angle a plurality of times. It allows the air flow between them to be interchanged, and to smoothly discharge the heat radiated from the lower end to the outside.

In addition, by forming the edge radiating fins 25 forming the rim surface of the radiating fins to structurally fix the split radiating fins 23 to include the function of the radiating fins at the same time.

As described above, heat dissipation is smoothly performed due to the natural convection due to the structure of the heat dissipation fin 20, thereby minimizing efficiency deterioration due to heat generated from the LED light source unit 10.

In addition, heat exchange by natural convection is performed smoothly, so that the rising temperature caused by light can be multi-dispersed quickly to the air temperature, and the performance of the light source device can be improved and the life can be extended. It can solve the problem of enlargement, noise, and power supply.

Below will be described in detail with respect to the LED lighting cooling device to facilitate the installation of the heat radiation fin as described above.

In the above-described LED lighting device according to the prior art in Figure 1, the heat dissipation fins 20 are radially installed on the LED light mounting surface 201 to be mounted with the LED light source unit, for installation through holes formed in each of the heat dissipation fins 20 And corresponding to the through-holes of the LED lighting mounting surface 201 corresponding to this should be fixed with bolts, nuts, etc. This process is applied to each of the heat dissipation fins 20, so that the installation is inconvenient, it takes a long time do.

On the other hand, LED lighting cooling apparatus according to another embodiment of the present invention is a disk-shaped base plate 10, a plurality of radiating fins 20 which are radially installed on the base plate 10, the base plate 10 and Together, the plurality of heat dissipation fins 20 are composed of a pressure fixing plate 30 which is fixed to the base plate 10 at the same time.

Specifically, with reference to Figures 5 to 12 to be described in detail with respect to the installation relationship of the heat radiation fins through another embodiment of the present invention.

5 is a perspective view showing the LED lighting cooling apparatus according to another embodiment of the present invention, Figure 6 is a plan view of Figure 5, Figure 7 is a AA cross-sectional view of Figure 6, unnecessary parts are deleted AA cross-sectional view, Figure 8 9 is a plan view showing a base plate of the LED lighting cooling apparatus according to another embodiment of the present invention, Figure 9 is a plan view showing a pressure failure plate of the LED lighting cooling apparatus according to another embodiment of the present invention, Figure 10 is the present invention Figure 11 is a perspective view showing a heat radiation fin of the LED lighting cooling apparatus according to another embodiment of, Figure 11 is a view showing the side structure of the heat radiation fin of the LED lighting cooling apparatus according to another embodiment of the present invention.

Referring to the drawings, the base plate 10 is in contact with the LED light source of the LED lighting device, a plurality of support grooves 12 are formed in the edge as shown in FIG.

The heat dissipation fins 20 are formed in a number corresponding to the number of the support grooves 12, and as shown in Figure 7, each side is formed with a projection 22, the other side is fitted to the support groove 12 The groove 21 is formed to contact the base plate 10 to release the heat transferred from the base plate 10.

The heat dissipation fin 20 is vertically divided into a plurality of as shown in Figure 10, by twisting the middle portion (23a) of each divided heat dissipation fin 23 at a set angle, the vertical air flow and the horizontal of the LED lighting cooling device By forming the air flow and the mutual air flow between each of the radiating fins smoothly, to promote the natural convection, compared to the same heat transfer area of the conventional radiating fins.

On the other hand, the split radiating fins 23 are formed by twisting the middle portion 23a of the split radiating fins 23 at a set angle a plurality of times, so that the split radiating fins 23 are twisted in opposite inclination directions with respect to the longitudinal direction of the split radiating fins 23, respectively. .

And the heat dissipation fin 20 includes a frame heat dissipation fin 25 to include a function of the heat dissipation fin while at the same time structurally fixing the split heat dissipation fin 23.

In addition, as shown in FIG. 7, when the base plate 10 is a circular plate, the heat dissipation fins 20 are installed on the base plate 10 so as to include a convection free space 50 in the central portion thereof.

In addition, the heat dissipation fins 20 are formed in the contact plate 24 formed to be inclined downward from both sides of the bottom of the heat dissipation fins 20 to be in close contact with the base plate 10 together with the pressure fixing plate 30 as shown in FIGS. do.

The pressure fixing plate 30 has a plurality of fitting holes 32 for fitting the protrusions 22 of the heat dissipation fins 20 to each other, and the heat dissipation fins 20 contacting the base plate 10 to the base plate 10. In order to be in close contact with each other, the protrusion 22 of the heat dissipation fin 20 is coupled to the base plate 10 using a coupling means in a state of being fitted into the fitting hole 32.

The assembly process of the LED lighting cooling device including the pressure fixing plate 30 as described above will be described in more detail with reference to the accompanying drawings.

Referring to the drawings, first, by inserting the fitting groove 21 of the heat radiation fin 20 into the support groove 12 provided on the edge of the base plate 10 to install a plurality of radial.

At this time, when the radiating fins 20 are radially coupled, the projections 22 of the radiating fins 20 are arranged radially toward the center of the convective free space 50.

Then, the pressure fixing plate 30 is disposed at the upper portion of the protrusion 22, and the protrusions 22 of the heat dissipation fins 20 are fitted into the fitting holes 32 of the pressure fixing plate 30.

Then, when the bolt 31 is tightened using the internal thread 11 installed in the bolt 31 and the base plate 10, the pressure fixing plate 30 presses the heat dissipation fin 20 downward, and the heat dissipation fin 20 The lower part of the) is in close contact with the base plate 10 to further improve heat dissipation efficiency.

Although the present invention has been described in connection with the preferred embodiment, those skilled in the art will be able to easily make various changes and modifications without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation, and the true scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope are included in the present invention. Should be interpreted as.

Claims

In the LED lighting cooling device of the LED lighting device equipped with a general LED light source formed of a plurality of LED elements,

Heat radiating fins installed on the LED lighting mounting surfaces to conduct heat generated from the LED lighting mounting surfaces and vertically divided into a plurality of heat dissipating fins, each of which is divided by an intermediate portion of the divided heat radiating fins at a set angle;

LED lighting chiller comprising a.
The method of claim 1,

The intermediate portion of the split heat sink fin is formed by twisting a plurality of times at a predetermined angle, LED lighting cooling device, characterized in that formed by twisting in the opposite inclination direction with respect to the longitudinal direction of the split heat sink fin, respectively.
The method of claim 2,

LED lighting cooling device further comprises a structural heat-fixing fins having a function of the heat radiation fins and structurally fixing the split heatsink.
The method according to claim 2 or 3,

When the LED lighting device is radial, a plurality of split radiating fins are radially installed on the LED lighting mounting surface, and a convection free space 231 is formed in the central portion of the LED lighting device. .
In the LED lighting cooling device of the LED lighting device equipped with a general LED light source formed of a plurality of LED elements,

A base plate in contact with the LED light source and having a plurality of support grooves formed at an edge thereof;

A heat dissipation fin formed in a number corresponding to the number of the supporting grooves, each of which has a protrusion formed thereon, and the other side of which has a fitting groove which is fitted into the supporting groove to discharge heat transferred from the base plate;

A pressure fixing plate coupled to the base plate using a coupling means in a state in which fitting holes for fitting the respective protrusions are formed to closely contact the heat dissipation fins to the base plate, and the protrusions are fitted in the fitting holes;

LED lighting cooling apparatus comprising a.
The method of claim 5,

LED lighting cooling device, characterized in that the contact plate formed to be inclined downward from both sides of the bottom of the heat radiation fin, the contact plate is in close contact with the base plate.