KR100944373B1 - Heat sink plate and pile up type heat sink plate using thereof - Google Patents

Abstract

PURPOSE: A heat sink plate and a pile up type heat sink plate using thereof are provided to perform mass product while low costs by pressing an aluminum plate and manufacturing the radiation plate. CONSTITUTION: A radiation plate is formed by pressing an aluminum plate. A plurality of depressions(110,110') are separated from with each other and are protruded downwardly. Concave parts(120,120') and convex parts(130,130') are formed at a depression part. First protrusions(113,113') are protruded at the external periphery of the recession part. An upper outside of the recession part is protruded to inside and has a pair of second protrusion(115) which are separated from each other. A plurality of radiation plate are laminated on each other by inserting a concave part and a convex part of one radiation plate to that of another.

Description

Heat sink and stacked up type heat sink using the same

The present invention relates to a heat sink and a laminated heat sink using the same.

Generally, appliances that use electricity generate a lot of heat. For example, if the heat generated from a heat generating device such as a circuit board with a light emitting diode (LED), a CPU, a refrigerator, a boiler, etc. is not discharged to the outside, the heat generating device may lower operating efficiency due to heat or even damage it. .

In order to prevent this, various heat dissipation devices are installed in the heating device to lower heat. Such heat dissipating devices have been disclosed, such as a blower for forcibly blowing a fan by a motor and a heat dissipating device for lowering heat by air by expanding a surface area.

The blower may be forced to blow air to cool the heating mechanism rapidly, but additional electricity is consumed in order to rotate the motor, and if the blower is used continuously, the motor may be damaged.

On the other hand, the heat sink has a plurality of heat dissipation fins to increase the surface area where air can come into contact with each other. By dissipating the heat generated from the heating mechanism in a natural state, the heat cooling rate is slower than that of the blower, but it can be used for a long time permanently. It is used a lot recently.

1 is a side view showing a state in which a conventional heat sink is mounted on an LED lamp.

In the conventional heat sink 10 shown in FIG. 1, a plurality of heat dissipation fins 15 are formed below the body 11 and the body 11. The heat sink 10 is made of a metal such as copper or aluminum alloy that has a high heat conduction. The heat sink 10 is provided in a heat generating mechanism such as an LED lamp 30 in which the light emitting diodes LED 33 are provided on the circuit board 31, for example. At this time, the heat sink 10 is installed on the bottom surface of the circuit board 31 on which the light emitting diodes 33 are installed to emit heat generated from the light emitting diodes 33 to the outside.

However, the conventional heat sink 10 has to be processed by NC lathes or milling a bunch of metal in order to form the heat radiation fin 15 on the body 11, there was a problem that a lot of discarded parts and expensive manufacturing cost .

In addition, if the heat dissipation device requires a higher heat dissipation performance after mounting the heat dissipation, there was a problem that additionally produced a separate heat dissipation.

The present invention was created in order to solve the problems as described above, the problem to be solved by the present invention is a mass production at a relatively low cost by the press working, heat sink that can easily adjust the heat dissipation according to the amount of heat and lamination using the same It is to provide a heat sink.

The heat sink according to the embodiment of the present invention for achieving the above object is formed so that the plurality of recessed parts spaced apart from each other protrude downward, the recessed portion and the convex portion is formed by the recessed portion.

A plurality of heat dissipation holes may be formed in the heat sink.

The lower outer periphery of the recess may include a first protrusion protruding outward, and the upper inner periphery of the recess may protrude inward and include a pair of second protrusions spaced apart from each other.

The heat sink may be formed by pressing a flat plate.

In addition, the laminated heat sink according to the embodiment of the present invention includes a plurality of heat sinks described above, and the plurality of heat sinks and convex portions of one heat sink are respectively inserted into the recesses and convex portions of the other heat sink. The heat sinks are formed by stacking each other.

When stacking the heat sinks, empty spaces may be formed between the recesses and the convex portions that are fitted to each other.

The first protrusion of the one heat sink may be sandwiched between the pair of second protrusions of the other heat sink.

According to the present invention, for example, by producing a heat sink by pressing an aluminum flat plate, mass production is possible at low cost.

In addition, the heat dissipation amount can be easily adjusted by simply stacking heat sinks without having to make a separate heat sink according to the amount of heat generated by the heat generator.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view of the heat sink according to the embodiment of the present invention from the bottom, Figure 3 is a cross-sectional view taken along line AA of Figure 2, Figure 4 is a bottom view showing another example of the depression formed in the heat sink according to the embodiment of the present invention 5 is a perspective view of a laminated heat sink according to an embodiment of the present invention from the bottom, FIG. 6 is a cross-sectional view taken along line BB of FIG. 5, and FIG. 7 is a heat sink according to an embodiment of the present invention. It is a side view which shows the attached state.

First, a heat sink according to an embodiment of the present invention and a laminated heat sink using the same are coupled to a heat generating device such as an LED lamp having a circuit board on which a light emitting diode (LED) is attached. It is used to release.

As shown in Figure 2 and 3, the heat sink 100 according to the embodiment of the present invention is formed of a flat plate of a predetermined shape. This flat plate can be formed into a square, a rectangle, or the like, but the shape of the flat plate is not limited.

On the other hand, the plate may be formed of a metal having high thermal conductivity such as copper or aluminum.

A depression 110 is formed in the heat sink 100. The depression 110 is formed to protrude downward to increase the surface area in contact with the heat sink 110 and air to improve the heat dissipation function.

Meanwhile, a plurality of recesses 110 may be formed in the heat sink 100.

The concave portion 120 and the convex portion 130 may be formed by the plurality of recesses 110. That is, as shown in FIG. 3, the recessed portion of the depression 110 may be the recess 120, and the portion not recessed may be the convex portion 130.

On the other hand, the heat sink 100 may be mounted so that the outer surface of the convex portion 130 is in contact with the heat generating mechanism. That is, as shown in FIG. 7, for example, when the heat sink 100 is mounted on a heating device such as an LED lamp 300 in which the light emitting diodes LEDs 330 are installed, the light emitting diodes LEDs 330 that generate heat on the upper surface of the heat sink 100 are disposed. The outer surface of the convex portion 130 of the heat dissipation plate 100 may be in contact with the bottom surface of the installed circuit board 310.

Here, when the heat sink 100 is coupled to the heat radiating mechanism 300, it may be coupled with a fastening means such as a bolt, and a bracket (not shown) for fastening the heat sink 100 to a specific portion of the heat radiating mechanism 300. It can also be combined.

On the other hand, the depression 110, when viewed in plan view, in the embodiment is formed in a rectangle, but as shown in Figure 4, the shape of the depression 1101 may be formed in a triangle. In FIG. 4, illustration of the heat dissipation hole 140 is omitted.

However, when the depression 110 protrudes downward from the heat sink 100, the contact area with the air becomes wider, and thus the depression 110 may have a heat dissipation function. It is not limited to the shape shown in 4.

In addition, the recess 110 may be formed vertically downward with respect to the heat sink 100. For example, the inside may be formed perpendicular to the heat sink 100 in the shape of a hollow pillar like a cup shape.

In addition, the heat sink 100 may form the depression 110 in the form of pressing the flat plate. When the heat sink 100 is formed by press working, there is an advantage that can be mass-produced at a low cost within a short time.

In addition, a plurality of heat dissipation holes 140 may be formed in the heat dissipation plate 100. The heat dissipation hole 140 may improve the heat dissipation effect by freeing the movement of air in the heat dissipation plate 100.

On the other hand, the heat dissipation plate 100 may be manufactured by forming a recess 110 by pressing after the heat dissipation hole 140 is first formed in the flat plate by punching.

In addition, the recess 110 may be provided with a first protrusion 113 and a second protrusion 115. The first protrusion 113 may protrude outward from the outer periphery of the lower end of the recess 110. In addition, the second protrusion 115 may be formed to protrude to the inside of the depression 110 so as to form a pair to be spaced apart from each other on the outer periphery of the upper end of the depression 110.

 On the other hand, when the first and second protrusions 113 and 115 form the depression 110 on the heat sink 100 by press working, when the thin plate is punched from the top to the press, the punching pressure of the press and the lower mold and Due to manufacturing tolerances between the presses, the upper end of the recess 110 is bent into the recess 110 to form a second protrusion 115, and the lower end of the recess 110 to the outside of the recess 110. It may be formed in the form of opening to form the first protrusion (113).

As shown in FIGS. 5 and 6, the stacked heat sink 200 according to the embodiment of the present invention is formed by stacking a plurality of heat sinks 100 described above, and a redundant description of the heat sink 100 will be omitted. do.

In the exemplary embodiment of the present invention, only two heat sinks 100 and 100 ′ are stacked.

The stacked heat sink 200 is formed in such a manner that a plurality of heat sinks 100 are stacked on each other. Here, when stacking the heat sink 100, the recess 120 and the convex portion 130 formed in one heat sink 100 and the concave portion 120 ′ and the convex portion 130 of the other heat sink 100 ′ are formed. The layers are stacked in such a manner that they are inserted into each other in a form of ').

That is, as illustrated in FIGS. 5 and 6, when the plurality of heat sinks 100 and 100 ′ are stacked on top of the heat sink 100, one heat sink 100 has an inner surface of another recess 120. The outer surface of the convex portion 130 ′ is fitted to the concave portion 120 ′, and the outer surface of the convex portion 130 of one heat sink 100 ′ is laminated to the inner surface of the convex portion 130 ′ of the other heat sink.

Meanwhile, when the stacked heat sink 200 is stacked with one heat sink 100 and the other heat sink 100 ', as shown in FIG. 6, between the concave portions 120 and 120' fitted with each other and the convex portions 130 and 130, respectively. Empty spaces 210 and 230 may be formed between the ')'. That is, only the side portions of the concave portions 120 and 120 'and the convex portions 130 and 130' fitted to each other may be in contact, and the remaining portions may be coupled to be spaced apart from each other.

By forming the empty spaces 210 and 230 between the concave portions 120 and 120 'and the convex portions 130 and 130' fitted to each other, the contact area of air can be increased to improve heat dissipation performance.

In this case, the heat dissipation holes 140 and 140 'formed in one heat sink 100 and the other heat sink 100' are formed when the heat sinks 100 and 100 'are stacked. It may be formed so as not to be blocked by the other heat sink (100 ') to facilitate the flow of air.

For example, when the plurality of heat sinks 100 and 100 'are stacked, the side surfaces of the recesses 120 and 120' and the protrusions 130 and 130 'fitted together are in contact with each other, so that the recesses 120 and 120' and the protrusions 130 and 130 'are in contact with each other. The heat dissipation holes 140 and 140 'formed at the side of the block may be blocked. Accordingly, the recesses 120 and 120 'and the convex portions 130 and 130' may be formed in other portions so that the heat dissipation holes 140 and 140 'formed in the side portions in contact with each other when the recesses 120 and 120' and the convex portions 130 and 130 'are fitted to each other do not coincide with each other.

Meanwhile, as illustrated in FIG. 6, when the heat sinks 100 and 100 ′ are stacked, the other heat sink 100 ′ is formed between the pair of second protrusions 115 formed in the depression 110 of one heat sink 100. Since the first protrusion 113 ′ formed in the recess 110 ′ is fitted to span, one heat sink 100 and the other heat sink 100 ′ may be easily prevented from being separated.

The stacked heat sink 200 according to the embodiment of the present invention configured as described above may adjust the heat dissipation performance according to the amount of heat generated by the heat generator. That is, as the amount of heat generated by the heat generating mechanism is higher, the heat dissipation performance can be improved by increasing the number of stacked layers of the heat dissipation plate 100 to increase the contact area with air.

Therefore, the heat dissipation performance can be adjusted according to the amount of heat generated by the heat generating device, and according to the heat generating devices having different amounts of heat generated, instead of manufacturing the heat sinks as in the prior art, only the number of stacks of the heat dissipation plate 100 can be changed. Can be significantly reduced.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

1 is a side cross-sectional view of a conventional heat sink mounted on an LED lamp.

Figure 2 is a perspective view of the heat sink according to the embodiment of the present invention from the bottom.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a perspective view from the bottom showing another example of the depression formed in the heat sink according to the embodiment of the present invention.

5 is a perspective view showing a laminated heat sink according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 5.

Figure 7 is a side cross-sectional view showing a state in which the heat sink according to the embodiment of the present invention mounted on the LED lamp.

<Description of reference numerals for the main parts of the drawings>

100,100 ': heat sink 110,110', 1101: depression

113,113 ': first protrusion 115: second protrusion

120,120 ': concave section 130,130': convex section

140,140 ': heating hole

200: laminated heat sink 210: space between recesses

230: space between the convex portions 300: LED lamp

310: LED substrate 330: light emitting diode

Claims (7)

Is formed by pressing the aluminum plate, the plurality of recessed parts spaced apart from each other is formed to protrude downward, the recessed portion and the convex portion is formed by the recessed portion, the outer peripheral edge of the lower end of the recessed portion protruding outward A heat dissipation plate having a protrusion, wherein the outer circumferential edge of the upper end of the recess is formed to protrude inward and have a pair of second protrusions spaced apart from each other. delete delete delete A laminated heat sink provided with a plurality of heat sinks according to claim 1 and formed by stacking the plurality of heat sinks with each other by inserting the recesses and the convex portions of one heat sink into the recesses and the convex portions of another heat sink. In claim 5, When the heat sinks are stacked, a stacked heat sink having an empty space formed between the concave portions and the convex portions that are fitted to each other. In claim 5, The first heat sink of the one heat sink is laminated laminated heat sink is sandwiched between a pair of second projection of the other heat sink.

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