KR200469061Y1

KR200469061Y1 - Non-base block heat sink

Info

Publication number: KR200469061Y1
Application number: KR2020110002551U
Authority: KR
Inventors: 충-시엔 후앙
Original assignee: 충-시엔 후앙
Priority date: 2011-03-28
Filing date: 2011-03-28
Publication date: 2013-09-13
Also published as: KR20120006872U

Abstract

A non-bottom heat sink includes a light emitting module formed of a light emitting fin stack, each light emitting fin adjacent to a plurality of locating notches located at peripheral edges thereof. It has a supporting rib disposed between two locating notches, each of the plurality of heat pipes is pressed into the locating notch of the light emitting pin, coupled to the supporting rib, and flush with the joining edge around each of the light emitting pins. And a heat dissipating end portion which is located adjacent to each other and extended from the heat receiving end portion and fixed to the light emitting fin or the light emitting fin module outside.

Description

Heat sink without floor block {NON-BASE BLOCK HEAT SINK}

The present invention relates in particular to a heatsink without a bottom block, wherein the heatsink of the present invention is press-fitted into a pile of radiation fins and a locating notch at the peripheral edge of each of the fins. And heat pipes positioned adjacent to each other at the same height as the coupling edges around the respective light emitting fins.

Conventional heat pipes attached to heat sinks generally include light emitting fin modules, a plurality of heat pipes, and metal floor blocks. The metal bottom block is directly coupled with a heat source to quickly transfer thermal energy to the outside open air through the heat pipe to the light emitting fin module. The heat pipe is fixed to the metal floor block with solder paste. Since the metal floor block and the heat pipe are each made of different metal, an electroplating process is required before fixing the heat pipe and the metal floor block. The electroplating process complicates manufacturing and increases costs. In addition, it is not easy to attach heat pipes and metal floor blocks using soldering techniques. In addition, since the metal bottom block is a solid block element, it consumes a lot of metal material and greatly increases the material cost and the weight of the heat sink.

In addition, the metal floor block is provided with a groove for accommodating the heat pipe. The grooves are spaced apart from each other, ie the heat pipes cannot be close to each other on the side of the metal floor block, thus slowing down the process. The heat pipe on the opposite side is away from the heat source, reducing the heat transfer efficiency. Since the heat pipes are separated from each other, it is not possible to transfer heat energy directly to each other.

In heat sinks with conventional floor blocks, the electroplating process complicates fabrication and increases costs, consumes a lot of metal material and greatly increases the cost of materials and the weight of the heat sink. In addition, since the grooves accommodating the heat pipes are located apart from each other, the process is delayed and the heat transfer efficiency is lowered.

The present invention seeks to solve the above problems of the prior art.

The present invention is accomplished under the following conditions. It is an object of the present invention to provide a heatsink without a bottom block, which heatsink reduces its volume and weight and saves material consumption. In order to achieve the above object and other objects of the present invention, a heat sink without a bottom block includes at least one of a radiation module and a plurality of heat pipes fixed to the at least one light emitting module. Each light emitting pin includes a supporting rib disposed between a plurality of locating notches located at an edge and two adjacent locating notches. Each heat pipe includes an opposite heat receiving end and a heat discharging end. The heat receiving ends of the heat pipes are press-fitted into the locating notches of the light emitting fins, coupled to the support ribs, and positioned adjacent to each other at the same height as the engaging edges around each light emitting fin.

In addition, each light emitting pin includes a plurality of stop ribs protruding from the inner wall of each locating notch and each positioned at a selected location for engaging around the heat-receiving end of the heat pipe. Each light emitting pin also includes a plurality of through openings that penetrate opposite sides and are located away from the locating notch. In addition, each light emitting fin is made with a number of retaining lugs located at opposite peripheral edges for fixation.

In addition, the heat sink without the bottom block is formed of two light emitting fin modules, wherein the heat receiving end and the heat dissipating end are respectively fixed to the two light emitting fin modules.

The heat receiving ends of each of the heat pipes also have raised platform portions in the middle of the heat receiving ends for direct contact with the outer heat source.

In addition, the stop ribs of each of the light emitting fins have a bar shape. Optionally, the stop rib of each light emitting pin may be round.

Since the heat sink of the present invention does not use a bottom block for fixing the light emitting fins, it is possible to reduce the volume, weight and cost of the heat sink.

By flattening the heat pipe and the heat receiving end, it causes a firm coupling between the stationary rib and the support rib and deformation of the heat receiving end of the heat pipe, thereby strengthening the solid contact between the heat pipe and the light emitting ring,

The combination of various types of locating notches, light emitting fin modules, and heat pipes facilitates heat dissipation.

Specific effects of the present invention will be described through the following detailed description of the drawings.

1 illustrates an assembly of a heatsink without a bottom block according to an embodiment of the present invention.
Figure 2 shows a side view of a heat sink without a bottom block according to an embodiment of the present invention.
3 is a cross-sectional view of a heat sink without a bottom block according to an embodiment of the present invention.
Figure 4 is a front view of a portion of the heat sink light emitting fin without the bottom block according to an embodiment of the present invention.
Figure 5 is a side view of a portion of the heat sink light emitting fin without the bottom block according to an embodiment of the present invention.
FIG. 6 shows heat pipes pressed into the locating notches of the light emitting fins and positioned adjacent to each other at the same height as the peripheral engagement edges of the light emitting fins in FIG. 5.
FIG. 7 is similar to FIG. 6 but shows a locating notch having a different shape.
FIG. 8 shows another arrangement for the stop rib of the locating notch different from FIG. 6.
9 shows the heat receiving end of the heat pipe press-fitted into the locating notch of the light emitting fin, according to FIG.
Fig. 10 shows the selective coupling between the stationary ribs in the locating notch of the light emitting fin and the stationary ribs in the heat pipe heat receiving end.
11 is a bottom view of a heat sink without a bottom block according to an embodiment of the present invention.
12 is a side view of FIG. 11.
13 is a bottom view of a heat sink without a bottom block according to an embodiment of the present invention.
14 is a side view of FIG. 13.
15 is an oblique bottom view of a heat sink without a bottom block according to an embodiment of the present invention.
16 is a side view of Fig.
17 is a bottom view of a heat sink without a bottom block according to an embodiment of the present invention.
18 is a side view of Fig.
19 is an oblique front view of a heat sink without a bottom block according to an embodiment of the present invention.
Fig. 20 is a side view of Fig. 19. Fig.
FIG. 21 shows an alternative form of a stop rib in the locating notch of one light emitting pin for a light emitting pin module in a heatsink without a bottom block.

1 to 3, the heat sink without the bottom block according to the embodiment of the present invention includes a light emitting fin module 10 and a plurality of heat pipes 20.

The light emitting pin module 10 is formed of a light emitting pin 1 pile. In FIG. 4, each light emitting pin 1 is located between a plurality of locating notches 11 located at a peripheral edge of the light emitting pin, and two adjacent locating notches 11 and located at a height of a peripheral coupling edge by a predetermined distance. A support rib 12 and at least one stationary rib 13 located on the inner wall of each locating notch 11 are separated (see other heights in FIG. 5).

The heat pipe 20 is designed in a predetermined form, each having a heat receiving end portion 21 and a heat dissipation end portion 22 facing each other.

When the light emitting fin module 10 and the plurality of heat pipes 20 are joined together, the flat outer wall of the heat receiving end 21 of the heat pipe 20 may be provided with a light emitting fin ( 1) Press the heat-receiving end 21 of the heat pipe 20 into the locating notch 11 of the light emitting fin 1 so as to be positioned adjacent to each other's periphery at the same height as each peripheral engaging edge portion. And flatten the heat receiving end 21 of the heat pipe 20. In the present invention, the heat pipes may be partially adjacent to each other, so that a relatively large number of heat pipes may be installed. In addition, the present invention does not use a bottom block for fixing the light emitting fins, the volume and weight of the heat sink is greatly reduced, so that the material consumption is reduced, and the cost and packaging for shipping is relatively reduced.

Subject to the alignment of the support ribs 12 between the alignment of the stationary ribs 13 in the locating notch 11 and the two adjacent locating notches, the flattening of the heat pipe 20 is characterized by The support ribs 12, the deformed stop ribs 13 and the support ribs 12, and the rigid coupling between the heat receiving end 21 of the heat pipe 20, causing the heat pipe 20 and the light emitting ring ( Strengthen the solid contact between the radiation ring, 1).

Each light emitting fin 1 of the light emitting fin module 10 also penetrates opposite sides and is spaced apart from the locating notch 11 to accommodate the heat dissipation end 22 of each heat pipe 20. It includes a through opening of 1, which strengthens the tight coupling between the heat pipe 20 and the light emitting fin module 10.

As shown in FIG. 4, the locating notches 11 of the respective light emitting fins 1 are formed in a predetermined arrangement by stamping. Each light emitting pin 1 also includes a number of retaining lugs 16 located at the peripheral edge of the light emitting pin opposite the locating notch 11. Using the holding lugs 16 of one of the light emitting pins 1 to fix the other light emitting pins 1, the various light emitting pins 1 are quickly and firmly stacked to form the light emitting pin module 10.

8 and 9 in an alternative form of the invention, each stop rib 13 is located in a locating notch 11 adjacent to the peripheral engagement edge of each light emitting pin 1. When setting the heat receiving end 21 in each locating notch 11 and flattening the heat receiving end 21 of the heat pipe 20, each of the stop ribs 13 receives a force to each heat pipe ( 20) is coupled to the periphery of the heat receiving end portion 21, and strengthens the tight coupling between the light emitting fin module 10 and the heat pipe 20.

10 illustrates another alternative embodiment of the present invention. According to an embodiment, each of the multiple support jibs 13 is located deep inside and opposite to the outside of each locating notch 11, respectively, to strengthen the tight coupling between the light emitting fin module 10 and the heat pipe 20. do.

The locating notch 11 of the light emitting fin 1 may have various shapes. For example, the locating notch 11 may be semicircular as shown in FIG. 5, or may be in various forms as shown in FIG. 7. Of course, assuming that the shape of the locating notch 11 or 11a varies, the heat receiving end 21 of each heat pipe 20 changes relatively.

In addition, the heat dissipation end 22 of the heat pipe 20 is disposed in the light emitting fin module 10 (see FIGS. 1 to 3). Optionally, the heat dissipation end 22 of the heat pipe 20 extends from one light emitting fin module 10 and placed in another light emitting fin module or another light emitting fin module (FIGS. 11-20). The combination of various light emitting fin modules and heat pipes facilitates heat dissipation.

11 and 12, the heat sink without the bottom block includes two light emitting fin modules 10 and 10a and a plurality of heat pipes 20, and the heat dissipation end portion of the heat pipe 20 22) each of which extends from the first light emitting pin module 10 and is disposed in the second light emitting pin module 10a.

13 and 14, the heat sink without the bottom block includes three light emitting fin modules 10, 10b, and 10c and a plurality of heat pipes 20, and heat dissipation of the heat pipes 20 is performed. Each end portion 22 extends from the first light emitting pin module 10 and is disposed in the second light emitting pin module 10b and the third light emitting pin module 10c.

15 and 16, the heat receiving end portions 21 of the heat pipes 20 are disposed on the light emitting fins 1a of the light emitting fin module 10 and are separated from each other by a predetermined distance, and the heat pipes are separated from each other. Each of the heat dissipation ends 22 of 20 is press-fitted into one peripheral portion of each light emitting fin 1a and positioned adjacent to each other.

According to the embodiment of FIGS. 17 and 18, the heatsink without bottom block has two heat-sinks 20 arranged in two sets with two aligned fin-like radiation fin modules 10d, 10e. ). The heat dissipation end 22 of the heat pipe 20 is fixed to the light emitting fin module parts 10d and 10e in the form of a smooth arch. The lower part of the two light emitting pin module appendages 10d and 10e includes a light emitting pin module 10f in the center.

According to the embodiment of FIGS. 19 and 20, the heat receiving end of each heat pipe 20a is a recessed surface portion of two sides facing the center raised platform portion 221a and the raised platform portion 221a. (recessed face portion, 212a). During installation, the raised platform portion 221a of each heat pipe 20a is in close contact with the heat source, and the recessed surface portion 212a is spaced from the heat source, in particular to avoid contact with the electronic element. For sake.

In addition, the stop rib 13 may have a variety of forms. For example, the stop rib 13 may take the form of a straight bar. Optionally, the stop rib 13 may be rounded to engage with the heat receiving end 21 of the heat pipe 20 (FIG. 21).

Although the detailed description of the embodiments of the present invention with reference to the drawings, various changes and additions are possible within the scope of the present invention. Therefore, the invention is not limited to the above embodiment.

Claims

A non-bottom heat sink having a bottom block comprising at least one light emitting module and a plurality of heat pipes fixed to the at least one light emitting module;
The radiation fin module comprises a plurality of light emitting fins arranged in a stack, each light emitting fin being adjacent to a plurality of locating notches located at peripheral edges thereof. A supporting rib disposed between the two notches; Support ribs between the two locating notches are separated from the height of the coupling edge around the light emitting fins by a predetermined distance,
Each heat pipe includes an opposite heat receiving end and a heat discharging end, wherein the heat receiving end of the heat pipe is press-fitted into the locating notch of the light emitting fin. And a bottom block coupled to the support ribs and positioned adjacent to each other at the same height as a coupling edge of each of the light emitting fins.

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2. The heat sink of claim 1, wherein each light emitting fin comprises at least one stop rib made from an inner wall of each of the locating notches.

2. The heat sink of claim 1, wherein each of the light emitting fins further comprises a plurality of stop ribs made of an inner wall of each of the locating notches adjacent to the peripheral engagement edges of the respective light emitting fins.

2. The plurality of stops of claim 1, wherein each of the light emitting pins is formed from an inner wall of each of the locating notches and is disposed on an inner wall away from a peripheral coupling edge of each light emitting pin and an outer wall adjacent to the peripheral coupling edge of each light emitting pin. The bottom blockless heat sink, characterized in that it further comprises a rib.

10. The heat sink of claim 1 wherein each light emitting fin further comprises a plurality of through holes penetrating both opposing sides and disposed away from the locating notch.

2. The heat sink of claim 1, wherein each of the light emitting fins is formed by a combination of each locating notch and a stop rib by stamping a single piece sheet.

10. The heat sink of claim 1 wherein each light emitting fin further comprises a plurality of support lugs positioned at opposite peripheral edges for rigidity.

2. The heat sink of claim 1, wherein the locating notches of each light emitting fin are semi-circular.

The heat sink of claim 1, wherein the locating notches of the respective light emitting fins have various shapes.

The heat sink of claim 1, wherein each of the heat dissipating ends of the light emitting fins is inserted through the light emitting fin module.

The light emitting device of claim 1, wherein the at least one light emitting pin module comprises a first light emitting pin module and a second light emitting pin module; Each heat pipe includes a heat receiving end fixed to the first light emitting fin module and a heat dissipating end fixed to the second light emitting fin module.

The heat receiving end of the heat pipe is located on the light emitting fin of the light emitting fin module and spaced apart from each other by a predetermined distance; Each heat dissipating end of the heat pipe is press-fitted into the locating notch of each of the light emitting fins and partially positioned adjacent to each other relative to each other.

The light emitting fin module of claim 1, wherein the at least one light emitting pin module comprises a first light emitting pin module accessory and a second light emitting pin module accessory, wherein the first light emitting pin module accessory and the second light emitting pin module accessory. The parts are adjacent to each other to form a light emitting pin module assembly; The heat pipes are arranged in two sets, each set being fixed to a heat receiving end fixed to the first light emitting pin module part and the second light emitting pin module part and to a second light emitting pin module part different from the other first light emitting pin module part. Heat sink without bottom block, characterized in that it has a heat dissipation end.

The heat sink of claim 1, wherein the heat receiving end of each heat pipe includes an elevated platform portion intermediate the heat receiving end for direct contact with an outer heat source.

4. The heat sink of claim 3, wherein the stop ribs of each of the light emitting fins have a bar shape.

4. The heat sink of claim 3, wherein the stop ribs of the respective light emitting fins are rounded.