KR101363037B1 - Radiation unit having stacked laminar member and, led illumination lamp having the same - Google Patents

Abstract

A heat radiation unit according to the present invention efficiently discharges heat from an LED to the outside by closely combining lamination members, forming a through hole between top and bottom lamination members, and forming a ventilation part which is connected from the upper end to the lower end thereof.

Description

Radiation unit having a laminated member is laminated, and LED lighting having the same {Radiation unit having stacked laminar member and, LED illumination lamp having the same}

The present invention relates to a heat dissipation unit, and more particularly, the laminated members are closely coupled to each other, and a through hole is formed between the upper and lower laminated members, and a ventilation unit communicating from the upper end to the lower end is transmitted from the LED. The heat dissipation unit is capable of effectively dissipating heat to the outside. In addition, the present invention also relates to an LED lamp having such a heat dissipation unit.

LEDs (light emitting diodes) are widely used for illumination recently because they have a longer lifetime, lower power consumption and higher luminance than fluorescent or incandescent lamps.

However, the LED generates a lot of heat during operation, and the heat can be removed smoothly (heat dissipation) to prolong the lifetime of the LED. To this end, the LED lighting lamp has a plurality of heat dissipating fins.

The LED lamp having such a heat dissipation fin is disclosed in the configuration, such as Korean Patent No. 10-1080827.

As shown in FIG. 1, the LED lamp 10 is coupled to a base 2 on which the LED 1 is installed, a heat dissipation fin 3 formed to protrude on the rear surface of the base 2, and a base 2. And an auxiliary mounting plate 4 to be provided. The base 2 and the heat dissipation fins 3 are manufactured by extruding aluminum. Accordingly, the base 2 and the heat dissipation fins 3 are integrally formed, and the heat dissipation fins 3 are formed in the longitudinal direction (the surface of the base 2). ), The z-direction).

However, since the heat dissipation fins 3 have a simple flat plate shape, there is a disadvantage in that heat exchange between the heat dissipation fins 3 and ambient air is not efficient.

In addition, since the heat radiation fins 3 are made by extrusion, there is a limit to increasing the length in the y direction and there is a disadvantage in that the shape cannot be complicated to increase the heat exchange area with the surrounding air.

The present invention is devised to solve the above problems, and an object thereof is to provide a heat dissipation unit that can efficiently exchange heat between the heat dissipation unit and the surrounding air, and an LED lamp having the same.

Still another object of the present invention is to provide a heat dissipation unit capable of increasing a heat exchange area with ambient air, and an LED lamp having the same.

In the heat dissipation unit according to the preferred embodiment of the present invention, a plurality of stacking members are stacked. The laminated member, the ring 31; A plurality of first heat sinks 33 formed to extend from the ring 31; And a second heat sink 37 stacked on an upper surface of the first heat sink. The plurality of first heat sinks are formed to have a predetermined angle with respect to the center of the ring, and air may move between the neighboring second heat sinks between the ring 31 of the upper lamination member and the ring 31 of the lower lamination member. A through hole 38 is formed, and the inside of the ring is formed with a vent portion 39 communicated from the bottom to the top.

An adhesive layer may be formed or an adhesive may be applied between the first and second heat sinks and between the second heat sinks.

The first and second heat sinks 33 and 37 may be formed with interlock tabs 32 recessed downward. Coupling between the first and second heat sinks 33 and 37 and coupling between the second heat sinks 37 are performed by forcibly engaging the upper interlock tab 32 to the lower interlock tab 32. Can be.

The coupling between the first and second heat sinks 33 and 37 is performed by bringing the surfaces of the first and second heat sinks 33 and 37 into close contact with each other, and the coupling between the second heat sinks 37 and the second heat sink (37). 37) are made in close contact with each other.

The interlock tab 32 may be formed in the lowermost stacking member 30 to penetrate the first heat sink 33.

The first and second heat sinks may include protrusions 34 protruding laterally to increase the heat dissipation area.

Another aspect of the present invention is an LED lamp, the heat dissipation unit; A case accommodating the heat dissipation unit in a space formed therein; And an LED installed on a lower surface of the case.

The case may include a side portion including a first through hole 222 formed at a position corresponding to the through hole 38 of the heat dissipation unit; And a cover 230 installed at an upper end of the side part and including a second through hole 232 formed so as to correspond between the neighboring second heat sinks of the heat dissipation unit.

The present invention has the following effects.

First, the through hole 38 is formed between the stacking members constituting the heat dissipation unit, and the ventilation unit 39 is formed inside the heat dissipation unit 100 to efficiently move air inside and outside the heat dissipation unit. Heat exchange can be effected effectively.

Second, since the outer surface area of the heat dissipation unit is large due to the structure of the first and second heat dissipation plates 33 and 37 having the protrusion 34 and the jaw 35, the heat dissipation can increase the heat exchange area with the surrounding air. It provides a unit and an LED lamp having the same.

Third, since the first heat sink 33 and the ring 31 are in close contact with the bottom plate 210, the contact area between the bottom plate 210 and the heat dissipation unit 100 is large, so that heat can be efficiently transmitted from the bottom plate. Provided is a heat dissipation unit and an LED lamp having the same.

1 is a cross-sectional view showing an LED lamp according to the prior art.
2 is an exploded perspective view showing an LED lamp according to a preferred embodiment of the present invention.
3 is a perspective view illustrating a heat dissipation unit provided in the LED lamp of FIG. 2.
4 is a perspective view illustrating a stacking member forming a heat dissipation unit of FIG. 3.
5 is a plan view illustrating a ring and a first heat sink constituting the laminated member of FIG. 3.
6 is a cross-sectional view showing the LED lamp of FIG.
FIG. 7 is a view showing a portion of the cross-sectional view taken along line CC ′ of FIG. 3.
8 is a cross-sectional view taken along line CC ′ of FIG. 3 and illustrates a bottom portion of the heat dissipation unit.
9 is an enlarged view of a portion A of FIG. 3.
FIG. 10 is an enlarged view of a portion B of FIG. 3.
FIG. 11 is a configuration diagram illustrating a process for manufacturing the heat dissipation unit of FIG. 3.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely examples of the present invention and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

On the other hand, in the present specification, the lower portion of the LED lamp, that is, the portion in which the LED is installed 'down' and the side on which the cover is installed will be referred to as 'up'.

Applicant has conducted a number of experiments and numerical simulations over a long time to achieve the object of the invention described in the problem to be solved, in order to achieve the above object, a heat dissipation unit consisting of a plurality of thin laminated members are most suitable I found out.

The laminated member is formed by forming slots, vents, and interlock tabs on a thin metal strip using a press device. The manufacturing method is a method of manufacturing a laminated core (rotor and stator) used in a motor. Application '. Although the method of manufacturing a laminated core is a known technique described in Korean Patent Nos. 10-0762743, 10-0762744, and the like, the heat dissipation unit according to the present invention is not the same as the laminated core, but also the method of manufacturing the laminated core and the present method. Since the invention (heat dissipation unit) is completely different in the technical field, it is considered that the progress of the present invention should not be denied by the laminated core manufacturing method.

Figure 2 is an exploded perspective view showing an LED lamp according to a preferred embodiment of the present invention, Figure 3 is a perspective view showing a heat dissipation unit provided in the LED lamp.

Referring to the drawings, the LED lamp 300 includes a heat dissipation unit 100, a case 200 accommodating the heat dissipation unit 100, and an LED 1 installed on the bottom surface 210 of the case 200. do.

The heat dissipation unit 100 is formed by stacking a plurality of stacking members 30.

As described above, since the conventional heat sink fin is made by extrusion or die casting method, it is difficult to make a complicated structure, so that the contact area with air cannot be greatly increased, and it is difficult to make a through hole through both sides of the heat sink fin. There was a problem that the movement (convection) was not smooth. In order to solve these problems, the present invention stacks the stacking members to form a heat dissipation unit.

As shown in FIGS. 4 and 5, the stacking member 30 includes a ring 31, a first heat sink 33 extending from the ring 31, and a second heat sink 37 stacked on the first heat sink 33. It is provided.

Inside the ring 37 there is formed a vent 39 through which air can move. The vent 39 is communicated from the lower end to the upper end of the heat dissipation unit 100, the heat is radiated while the air is moved through the vent 39.

The plurality of first heat sinks 33 are formed to have a predetermined angle on the ring 31. The first heat sink 33 extends outward from the ring 31 to be integrally formed with the ring 31, and the second heat sink 37 is stacked on the top or bottom surface of the first heat sink 33.

Preferably, interlock tabs 32 are formed in the first and second heat sinks 33 and 37 to concave downward. The interlock tab 32 is for the first and second heat sinks 33 and 37 stacked on the upper and lower portions to be coupled to each other, or the second heat sink 37 to be coupled to each other.

That is, as shown in FIGS. 7 and 8, the interlock tab 32 of the upper first heat sink 33 is forcibly coupled to the interlock tab 32 of the lower second heat sink 37, and the second heat sink ( 37 is forcibly fitted to the interlock tab 32 of the second heat sink 37 or the interlock tab 32 of the first heat sink 33 below. Surfaces of the first and second heat sinks 33 and 37 are in close contact with each other by the interference fitting and the surfaces of the second heat sinks 37 are in close contact with each other, whereby the heat transferred to the lowermost stacking member 30 is It can be radiated while being well transmitted to the uppermost stacking member 30.

Meanwhile, an interlock tab 32 is formed in the first heat sink 33 of the lowermost stacking member so as to penetrate the first heat sink 33. As such, the lowermost interlock tab 32 is formed to penetrate the first heat sink 33 so that the upper heat dissipation unit and the lower heat dissipation unit are separated from each other in a stacked barrel (not shown). . In addition, the lower interlock tab 32 does not protrude downward, such that the heat dissipation unit 100 and the bottom plate 210 may be in close contact with each other. On the other hand, the lamination process will be described below.

In addition, the first and second heat sinks 33 and 37 may include protrusions 34 protruding laterally to increase the heat dissipation area. Further, the first and second heat sinks 33 and 37 have a jaw 35, which has the effect of increasing the heat dissipation area.

According to the present invention, instead of the engagement by the interlock tab 32, the first and second heat sinks (not shown) by an adhesive (not shown) applied between the first heat sink 33 and the second heat sink 37 33) 37 may be coupled to each other or the second heat sink 37 may be coupled to each other by an adhesive applied between the second heat sink 37. The adhesive is preferably excellent in thermal conductivity and excellent in heat resistance.

In addition, in place of the adhesive, an adhesive layer (not shown) is coated on the surfaces of the first and second heat sinks 33 and 37, and the adhesive layer is heated at a high temperature in a state in which a plurality of laminated members are laminated, thereby forming the laminated member ( 30 may be combined with each other. Since the high temperature heating is a conventional process that may be made of a heater or the like, description thereof will be omitted. The adhesive material constituting the adhesive layer is also preferably excellent in thermal conductivity and excellent in heat resistance.

 3 and 4, when a plurality of stacking members 30 are stacked, a neighboring second is formed between the ring 31 of the upper stacking member 30 and the ring 31 of the lower stacking member 30. A through hole 38 through which air moves between the heat sinks 37 is formed.

The through hole 38 is a hole for communicating the outside of the heat dissipation unit 100 with the vent 39, so that the air inside and outside the heat dissipation unit 100 is moved to each other to allow efficient heat dissipation. 3 and 4, three second heat sinks 37 are stacked on the top surface of the first heat sink 33 to form a through hole 38 having a height corresponding to the thickness of the three second heat sinks 37. The height of the through hole 38 may be changed by adjusting the number of the second heat sinks 37 to be stacked.

Meanwhile, as shown in FIGS. 9 and 10, two or more lamination members 30 including only the ring 31 and the first heat dissipation plate 33 are stacked in the top and bottom of the heat dissipation unit 100. This is to prevent the upper and lower rings 31 from being broken.

The case 200 includes a side part 210, a bottom part 220 installed at the bottom of the side part 210, and a cover 230 installed at the top of the side part 210. A first through hole 222 is formed in the side portion 210, and the first through hole 222 is formed at a position corresponding to the through hole 38.

The cover 230 includes a second through hole 232, and the second through hole 232 is formed to correspond between the second heat sinks 37 adjacent to each other of the heat dissipation unit 100.

The bottom 210 is provided with an LED 1 on its lower surface, and an apparatus 218 for operating or controlling the LED 1 on its upper surface. The bottom part 210 is formed with a third through hole 212 for air movement.

Then, a process for manufacturing the heat dissipation unit according to the present invention will be described. According to the present invention, by using a press device to process a thin metal strip to form a laminated member 30, the laminated member 30 is laminated to make a heat dissipation unit 100.

As shown in FIG. 11, the heat dissipation unit manufacturing apparatus includes a slot forming unit 130, a counter hole forming unit 140, a vent forming unit 150, an interlock tab forming unit 160, a cutting unit 170, and The blanking part 180 is provided.

That is, the press bodies 125 of the heat dissipation unit manufacturing apparatus 100 have pin punches 130a, 140a, 150a, 160a, 170a having various shapes and functions of stamping or blanking a metal strip s. And a blank block 180a, and the die bodies 120 have punch holes 130b, 140b, 150b (corresponding to pin punches 130a, 140a, 150a, 160a, 170a) ( 160b) and 170b are formed, and a blank die 180b corresponding to the blank block 180a is installed. The heat dissipation unit 100 is manufactured by supplying the device 100 with a thin metal strip s of elongated shape.

In the first step I, a plurality of slots 36 are formed by drilling a metal strip s conveyed by a predetermined conveying means (not shown). The slot means a portion between the first heat sink 33 or a portion between the second heat sink 37.

Subsequently, the metal strip 1 is brought into the standby state in the second step (II). Next, the metal strip 1 is moved to the third step (III) to undergo a counter process. The counter process is a process for forming a hole (that is, a hole formed so that the interlock tab penetrates through the heat sink) at the point where the interlock tab 32 is to be formed in order to stack the stacking members 30 in a predetermined number of times and then separate the stacked members 30. to be. This counter process is not performed on all the first heat sinks 33 or all the second heat sinks 37, but is performed, for example, once every 20 times, depending on the predetermined thickness of the heat dissipation unit 100. When the counter process is performed, the position at which the interlock tab 32 is formed in the metal strip s is punctured by the punch pin 140a. If the process is not performed, the interlock tab 32 is simply excessively used as an idle process.

Next, in the fourth step IV, the vent 39 at the center is punctured. Subsequently, the metal strip s, which is advanced one pitch further, is pressed down by a plurality of points around the vent 39 by the embossing pins 160a in the embossing process of the fifth step (V). Is formed. The interlock tab 32 is concave at the top and convex at the bottom. In the sixth step (VI), when the first heat sink 33 is formed, it is simply an idle process, and when the second heat sink 37 is formed, the ring connecting the second heat sink 37 to each other is formed. The pin punch 170a cuts and removes the portion.

The seventh step (iii) blanks the metal strip s to manufacture the first heat sink 33 and the ring 31 or to manufacture the second heat sink 37, and the first heat sink 33 and the ring ( 31) or the second heat sink 37 is laminated to complete the heat dissipation unit 100. In this step, the outline of the stacking member 30 is cut by the blank block 180a and separated from the metal strip s.

The separated first heat sink 33 and the ring 31 or the second heat sink 37 are pushed into the blank die 180b by the blank block 180a and stacked on top of the stacking member 30 which is already blanked. do. At this time, since the convex portion of the lower surface of the interlock tab 32 of the upper first heat sink 33 or the second heat sink is inserted into and fitted into the upper recess of the interlock tab 32 of the lower second heat sink 37, The members 30 may be stacked on each other. For example, after 20 stacking members 30 are stacked by the same process, the first heat sink 33 having the interlock tab 32 as a through hole is blanked and stacked thereon in the counter process. Since the heat sink 33 does not have the interlock tab 32, the stacking member 30 is no longer stacked but separated. The heat dissipation unit 100 thus manufactured is discharged to the outside through a separate discharge port.

On the other hand, when the first and second heat sinks 33 and 37 are bonded to each other by using the adhesive, the adhesive is applied to the first and second heat sinks 33 and (a) after the blanking step VII without passing through the III and V processes. 37) and between the second heat sink 33 is bonded to each other.

In addition, the first and second heat sinks 33 and 37 and the second heat sink 33 are coupled to each other by using the coated adhesive layer (that is, the first and second heat sinks are coupled to each other and the second heat sink is joined). In this case, after the adhesive is coated on the metal strip s in advance, the first and second heat sinks 33 and 37 are laminated to each other through the steps I, IV, VI, and VII, and then heated using a heater or the like. To be combined with each other.

s: metal strip 1: LED
30: laminated member 31: ring
32: interlock tab 33: first heat sink
37: second heat sink 38: through hole
39: vent 100: heat dissipation unit
200: case 300: LED light

Claims (8)

A plurality of laminated members are made of stacked,
Lamination member,
Ring 31;
A plurality of first heat sinks 33 formed to extend from the ring 31; And
And a second heat sink 37 stacked on an upper surface of the first heat sink.
The plurality of first heat sinks are formed to form a predetermined angle with respect to the center of the ring,
Between the ring 31 of the upper laminated member and the ring 31 of the lower laminated member is formed a through hole 38 through which air can move between the neighboring second heat sink,
Heat dissipation unit, characterized in that the ventilation portion (39) formed from the bottom to the top in communication with the inside of the ring. The method of claim 1,
A heat dissipation unit, characterized in that an adhesive layer is formed between the first and second heat sinks and between the second heat sinks or an adhesive is applied. The method of claim 1,
The first and second heat sinks 33 and 37 are formed with interlock tabs 32 recessed downward, respectively.
The coupling between the first and second heat sinks 33 and 37 and the coupling between the second heat sinks 37 are characterized in that the upper interlock tab 32 is forcibly fitted to the lower interlock tab 32. Heat dissipation unit. The method of claim 3,
The coupling between the first and second heat sinks 33 and 37 is performed by bringing the surfaces of the first and second heat sinks 33 and 37 into close contact with each other, and the coupling between the second heat sinks 37 and the second heat sink 37. Heat dissipation unit, characterized in that the surface of the) is in close contact with each other. 5. The method of claim 4,
A heat dissipation unit, characterized in that the lowermost laminated member 30 is formed so that the interlock tab 32 passes through the first heat sink 33. The method according to any one of claims 1 to 5,
The heat dissipation unit, characterized in that the first and second heat sinks have protrusions (34) projecting laterally to increase the heat dissipation area. The heat dissipation unit of any one of claims 1 to 5;
A case accommodating the heat dissipation unit in a space formed therein; And
LED installed on the lower surface of the case; LED lighting characterized in that it comprises a. The method of claim 7, wherein
Case is,
A side portion including a first through hole 222 formed at a position corresponding to the through hole 38 of the heat dissipation unit; And
And a cover (230) installed at an upper end of the side portion and including a second through hole (232) formed so as to correspond between the neighboring second heat sinks of the heat dissipation unit.

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