KR101991951B1 - Heat transferring member - Google Patents

Abstract

Disclosed is a heat conducting member capable of exerting an efficient and reliable heat conducting function with a simple structure comprising: a body structure having an elastic core having a through hole penetrating upper and lower surfaces in a thickness direction thereof, and an adhesive laminated on the lower surface of the core; and a thermoelectric element inserted into and coupled to the through hole. In the adhesive, at least a part of a portion corresponding to an edge of a lower inlet of the through hole protrudes inwardly of the through hole to form a fixing projection to support a bottom surface of the thermoelectric element and maintain adhesion.

Description

[0001] Heat transferring member [0002]

The present invention relates to a heat conducting member.

As electronic communication devices including mobile phones become more sophisticated and highly functional, the processing speed of microprocessors also increases, and electromagnetic waves and heat generation are becoming a big problem.

In order to solve such a problem, for example, a heat dissipating unit is usually used to rapidly discharge the heat generated from the microprocessor to the outside.

The heat dissipation unit is used interposed between a case for cooling and an electronic component mounted on a circuit board. For example, a heat dissipation unit, such as a microprocessor mounted on a circuit board, Materials, TIM) are attached and the other side is attached to the case, and the heat generated from the heat source is transmitted to the case through the thermoelectric element, so that the case is thermally cooled and thermally dispersed.

Korean Patent No. 0820902 by the present applicant discloses a thermally conductive elastomer having a constant volume; A thermally conductive elastic adhesive which surrounds the thermally conductive elastomer and is adhered by curing; And a polymer film which surrounds the outside of the thermally conductive elastic adhesive and is adhered to the thermally conductive elastic adhesive by the curing and has a metal foil bonded on its back surface.

Korean Patent Registration No. 1228603 discloses a sponge which is an inner elastic body; A thermally conductive layer formed on the outer surface of the sponge and including a graphite layer contained in each base film; Wherein the thermally conductive layer is formed such that a substrate film adhered to both surfaces of the graphite layer or a substrate film adhered to an outer surface of the graphite layer is formed wider than graphite, And the respective base films are directly laminated so that the graphite layer is not exposed to the outside.

According to the above patent, since the polymer film or the base film surrounds the thermally conductive elastomer and the sponge, respectively, the elasticity of the elastic body and the sponge is limited, and the elasticity and the sponge can not be sufficiently utilized. There is a problem in that it takes a lot of time and cost to wrap or wrap it.

Further, when a metal layer or a graphite layer is formed on a polymer film or a base film on an elastic body or a sponge, the metal layer or the graphite layer having no elasticity on the side when repeatedly pressed by the force applied in the vertical direction of the finished product, There is a problem that it is crushed or broken.

Further, the polymer film or the base film is a material which can not be restored, and is easily deformed by external pressing.

In addition, when the polymer film or the base film having a smooth surface and high mechanical strength is in direct contact with the heat source or the object to be cooled, when the base film is applied to an earphone or the like having a voice coil vibrating by an electrical signal, There is a disadvantage that it is easy to provide acoustic noise.

Also, Korean Patent Registration No. 1715988 of Dexerials Corp. of Japan, An anisotropic thermally conductive filler; An extruding step of extruding a thermally conductive composition containing a filler by an extruder and molding an extrudate in which an anisotropic thermally conductive filler is oriented along an extrusion direction, a curing step of curing the extrudate to obtain a cured product, Is cut at a predetermined thickness in a direction perpendicular to the extrusion direction by using an ultrasonic cutter, and a thermally conductive sheet is disclosed.

The thermally conductive sheet according to the above patent has insufficient elasticity and restoring force due to the lack of pores and mixes a large amount of filler in the polymer in order to increase the thermal conductivity. Therefore, the self-adhesive force is small and the sheet is cut perpendicularly to the extrusion direction. So that it is difficult to continuously produce the product.

In addition, since the filler has a considerably long length compared to the diameter, the filler is exposed to the outside at the cut end, and the surface of the thermally conductive sheet is rough and the filler is slippery because it is carbon fiber.

In addition, it has a disadvantage in that it is difficult to handle and process because it is easily damaged during manufacture, transportation and processing due to its relatively low mechanical strength.

According to another conventional technology, there is an electrically insulating thermally conductive sheet prepared by uniformly mixing, casting and curing a thermally conductive powder such as alumina on an elastic silicone rubber and then cutting it to a predetermined length.

According to this technique, the thermally conductive sheet has a disadvantage that it lacks pores and lacks elasticity and restoring force, and has a small elastic working distance.

In addition, when the hardness of the thermally conductive sheet is lowered so that the thermally conductive sheet is easily contacted with the object even with a small force, the thermally conductive sheet has a low mechanical strength and is liable to be damaged during manufacture, transportation and processing.

Accordingly, an object of the present invention is to provide a heat conduction member that can exhibit an efficient, reliable and efficient heat conduction function with a simple structure.

Another object of the present invention is to provide an integrated heat conduction member having good elasticity and restoring force and having a good heat conduction function.

Another object of the present invention is to provide a heat conduction member having good mechanical strength, low hardness, and long working distance.

Another object of the present invention is to provide a heat conduction member having a reduced pressing force as a whole and having a restoring force and a heat conduction function.

Another object of the present invention is to provide a heat conduction member which is easy to exert the elasticity and restoring force inherent to the core, which is an elastic body, and which improves the restoration ratio of the thermoelectric element.

Another object of the present invention is to provide a heat conduction member having a smooth and large frictional coefficient surface to minimize noise or movement due to vibration or friction while maximizing heat transfer with a contacted object.

Another object of the present invention is to provide a heat conduction member capable of reliably absorbing vibration and impact transmitted from an object.

Another object of the present invention is to provide a heat conduction member capable of reliably transferring heat generated from an electronic component to a metal case at a shortest distance.

Another object of the present invention is to provide a heat conduction member which is easy to provide precise dimensions in manufacturing.

Another object of the present invention is to provide a heat conducting member capable of shielding electromagnetic waves.

Another object of the present invention is to provide a heat conduction member which is easy to manufacture and which can easily provide precise dimensions at the time of manufacture.

Another object of the present invention is to provide a heat conduction member made of a single body that is easy to mount and detach.

According to an aspect of the present invention, there is provided a heat conduction member interposed between opposed objects, the heat conduction member vertically transferring heat, comprising: an elastic core having a through hole penetrating the upper surface and the lower surface in a thickness direction; A body having an adhesive; And a thermoelectric element sandwiched and coupled to the through hole, wherein at least a part of a portion of the adhesive corresponding to an edge of a lower inlet of the through hole protrudes inward of the through hole to form a hook, And the lower surface of the heat conductive member is held and adhesive is maintained.

According to another aspect of the present invention, there is provided a heat conduction member interposed between opposed objects, the heat conduction member vertically transferring heat, the through-hole passing through the upper surface and the lower surface in the thickness direction, A body having an adhesive support and a pressure sensitive adhesive laminated on a lower surface of the support; And a thermoelectric element sandwiched and coupled to the through hole, wherein at least a part of a portion of the adhesive corresponding to an edge of a lower inlet of the through hole protrudes inward of the through hole to form a hook, And the lower surface of the heat conductive member is held and adhesive is maintained.

Preferably, the core may be formed by adhering a liquid polymer corresponding to the core onto the support by curing.

Preferably, the support may be a polymer film or metal foil of uniform thickness.

Preferably, in the core, a buffer groove connected to the edge of the through hole may be formed.

Preferably, in the core, an extension groove connected to the edge of the through hole is formed, and a finger inserted into the extension groove may protrude from the thermoelectric element.

Preferably, at least one of the upper surface and the lower surface of the thermoelectric element has a similar horizontal level with respect to the inlet of the through hole, or may be located inside the inlet.

Preferably, the color of the thermoelectric element and the color of the core may be different.

Preferably, the upper surface and the lower surface of the thermoelectric element may have no self-adhesive force.

Preferably, the pressure-sensitive adhesive is a thermally conductive double-sided pressure-sensitive adhesive tape, and a PET film may be interposed within the pressure-sensitive adhesive.

Preferably, the thermal conductivity of the thermoelectric element is at least five times greater than the thermal conductivity of the core, and the total cross-sectional area occupied by the thermoelectric element may be at least one fifth of the total cross-sectional area occupied by the core.

According to the above structure, the edge portion of the lower surface of the thermoelectric element is rested on the holding jaw formed by the tackifier, and is supported by the tackifier and maintained in the tacky state, thereby preventing the thermoelectric element from being detached from the body during transportation and handling And it is possible to prevent the thermoelectric element from remaining on the release sheet and leaving only the body when the thermally conductive member is detached from the release sheet by the operator and attached to the object.

In addition, the heat conduction function that is efficient, reliable, and efficient in heat transfer can be exhibited by a simple structure.

In addition, it has low hardness, good elasticity and restoring force, long working distance, and hardness higher than core. It has good elasticity and restoring power, long operating distance, good heat conduction, easy mounting and detachment Do.

In addition, the mechanical strength is good by the support, the overall hardness is low by the core, and the pressing force as a whole is low, and the thermoelectric element is adhered to the core to improve the restoration efficiency of the thermoelectric element.

Since the outer end surface of the core is not covered by other materials but is exposed to the outside, it is possible to exhibit elasticity and restoring force inherent to the core, thereby reliably absorbing vibration and impact transmitted from the object, The restoring force of the device is also improved.

In addition, since the surface of the core is smooth as a skin layer and has a large coefficient of friction, it is possible to minimize noise or movement due to vibration or friction with the object to be contacted, to have good thermal contact and to absorb vibration and shock transmitted from the object It is easy.

In addition, since the specific gravity and hardness of the thermoelectric element are higher than that of the core, the thermoelectric element is more reliably and effectively contacted to the opposed object, so heat transfer is good.

Further, the thermoelectric element having the self-adhesive force is brought into contact with the heat source, and the adhesive tape is formed on the core or the support of this portion, so that the heat transfer is more effective.

Further, since the thermoelectric element protrudes outward from the core or is similar to the height of the core, the thermally conductive material is more reliably and effectively contacted to the opposed object, so heat transfer is good.

1 shows a heat conducting member according to an embodiment of the invention.
2 is a sectional view taken along line 2-2 in Fig.
3 (a) and 3 (b) show a state in which the heat conduction member is applied.
4 shows a heat conducting member according to another embodiment of the present invention.
5 is a photograph showing an actual product of the heat conducting member of FIG.
6 shows a heat conducting member according to another embodiment of the present invention.

It is noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention. In addition, the technical terms used in the present invention should be construed in a sense generally understood by a person having ordinary skill in the art to which the present invention belongs, unless otherwise defined in the present invention, Should not be construed as interpreted or interpreted in an excessively reduced sense. In addition, when a technical term used in the present invention is an erroneous technical term that does not accurately express the concept of the present invention, it should be understood that technical terms can be understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 shows a heat conducting member according to an embodiment of the invention, and Fig. 2 is a sectional view taken along line 2-2 in Fig.

The heat conduction member of this embodiment is composed of a body 100 and a thermoelectric element 200 that is inserted into and bonded to the through hole 112 of the body 100. The body 100 includes an elastic core 110 and a core 110 And a pressure-sensitive adhesive 120 laminated on the lower surface of the support base 130. The pressure-

Since the support base 130 is selectively used, if the support base 130 is provided, the body 100 means a combination of the core 110, the support base 130 and the adhesive 120, The body 100 refers to a structure in which the core 110 and the adhesive 120 are combined.

The support 130 may be selectively used to reinforce the mechanical strength of the core 110. When the support 130 is applied, a separate adhesive may be used between the core 110 and the support 130, The self-adhesive force of the core 110 can be utilized to reduce the thickness and thickness. For example, a liquid polymer corresponding to the core 110 may be coated on the support 130 and cured and bonded directly to the support 130.

According to this structure, since the side surface of the core 110 constituting the body 100 is exposed to the outside without being wrapped by the polymer film or the base film, elasticity and restoring force inherent to the core 110 can be exerted.

In addition, when the support base 130 is used, the mechanical strength can be secured as compared with a case where the thermoelectric element 200 which is only the core 110 is applied. In other words, when the core 110 is foamed, it has good elasticity, restoring force and flexibility. However, since the mechanical strength is low, handling and processing are inconvenient. The mechanical strength is secured by stacking the support 130 having no elasticity and restoring force, . In the case where the thermoelectric element 200 has a low viscosity and a self-adhesive force, for example, when the hardness is less than the Shore 0040, it is difficult to separate the thermoelectric element 200 from the release paper because the mechanical strength of the thermoelectric element 200 is low, The thermoelectric element 200 can be separated or mounted and removed easily.

The structure and function of each component will be described below.

In the following description, a pressure-sensitive adhesive is a term including both a pressure-sensitive adhesive and an adhesive. Hereinafter, a bond and an adhesive are used and interpreted in the same sense. For example, the adhesive may be an adhesive or an adhesive tape.

1. Core

The core 110 is made of a thermoplastic urethane sponge, a polyethylene sponge and a polyolefin sponge, or a thermosetting silicone sponge, which is made of a thermoplastic urethane sponge that has good elasticity and restoring force, has a large elastic working distance, . For example, the core 110 may be one type of Poron, trademark of Rogers Corp of the United States.

However, the present invention is not limited to this, and the core 110 may be a non-foam rubber having a low hardness.

The core 110 has a density and a hardness of the core 110 so that the thermoelectric element 200 reliably contacts the heat source and the heat dissipation unit in a reliable and elastic manner, Is lower than the density and hardness.

The upper surface of the core 110 may have a smooth surface by forming a skin layer in the process of forming the foam, and may have good surface roughness and waterproof properties. With such a skin layer structure, the contact with the opposing object can be reliably made, so that vibration and shock can be absorbed well.

When the core 110 is foamed, the thermal conductivity of the core 110 is preferably 0.2 W or less so that the elasticity and the restoration ratio are good, and may be electrically insulated so as not to subject the object to electrical interference.

In summary, the thermal conductivity, density, and hardness of the core 110 are low, but the elasticity and the recovery rate are good. As a result, the thermoelectric element 200 can reliably contact the heat source and the heat dissipation unit, Is easy to absorb vibrations and shocks, and overall, the pressing force is small.

The core 110 has an upper surface and a lower surface, and has a through hole 112 penetrating the upper surface and the lower surface.

The through hole 112 may be formed in the interior of the core 110 by a blade mold, and may be circular, but not limited thereto, as in this embodiment, and may be rectangular or polygonal, have.

The thermoelectric element 200 is physically inserted into and bonded to the through hole 112 so that at least a part of the inside of the through hole 112 is in contact with the cut surface of the core 110.

Although the shape and size (diameter) of the through hole 112 are determined according to the shape and size of the thermoelectric element 200, the shape and size of the thermoelectric element 200 can be determined according to the hardness and size of the thermoelectric element 200 or the hardness and size of the core 110 have.

The size of the through hole 112 may be larger or smaller than that of the thermoelectric element 200. Particularly when the thermoelectric element 200 has a low hardness, the size of the through hole 112 is slightly larger than that of the through hole 112 And the thermoelectric element 200 can be in good contact with each other.

The body 100 and the thermoelectric element 200 can be integrated by such a physical fitting method.

2. Support

Although the thickness of the support base 130 is not particularly limited, it is possible to increase the elastic working distance of the core 110 and to have a thickness of 1/3 or less of the thickness of the core 110 with good workability at the time of cutting.

An opening corresponding to the through hole 112 is formed because the area of the support base 130 is equal to the surface area of the core 110 and is flat and has the same shape as the core 110. [

The support base 130 may be a polymer film or sheet such as PET, PVC, PE, or PI that is easily cut by a blade die. In some cases, the support base 130 may be formed of a metal foil having good thermal diffusion and heat dissipation . In the case of metal foil, there is an advantage that electromagnetic waves can be shielded. In this case, the adhesive 120 laminated on the lower surface of the support 130 for electrical grounding may be electrically conductive.

3. Thermoelectric element

As the thermoelectric element 200, for example, a thermally conductive rubber or a thermally conductive resin, a thermally conductive gel or a thermally conductive clad of a flexible silicone rubber type or acrylic resin type, or a thermally conductive material such as graphite Sheets can be applied.

The thermal conductivity of the thermoelectric element 200 is five times larger than the thermal conductivity of the core 110 and the plurality of thermoelectric elements 200 can be applied by forming a plurality of through holes 112 in one core. In this case, the total cross-sectional area occupied by the thermoelectric element 200 may be 1/5 or more of the total cross-sectional area occupied by the core 100.

Thus, the thermoelectric element 200 can be provided with various hardnesses depending on the application. For example, the thermoelectric element 200 may have a hardness of Shore A of 70 or less, a low elasticity and a low hardness, or may be a gel when applied to a special purpose. For example, the thermoelectric element 200 may be a kind of thermal material of Laird Technologies, USA.

As another example, the hardness of the thermoelectric element 200 may be preferably about, for example, about Shore 0040, as judged comprehensively for mass production and characterization.

The upper surface and the lower surface of the thermoelectric element 200 have a self-adhesive force, or at least the lower surface that contacts the heat source can have a self-adhesive force.

Here, when the thermoelectric element 200 has a self-adhesive force, the self-adhesive force may be less than about 1/3 of the self-adhesive force of the adhesive 120 laminated on the lower surface of the core 110 or the support base 130.

On the other hand, the upper surface and the lower surface of the thermoelectric element 200 may not have a self-adhesive force. In this case, when the thermoelectric element 200 is adhered to the release sheet and only the body 100 falls And the adhesive 120 adhered to the lower surface of the core 110 or the support 130 reliably adheres to the object and consequently the thermoelectric element 200 is strongly adhered more reliably to the object, .

The thermoelectric element 200 may be electrically insulated or may have electric (semi) conductivity. When the thermosetting ceramic powder such as alumina powder is mixed with the polymer resin or rubber, the thermoelectric element 200 is electrically insulated, When the thermoelectric element 200 itself is made of a graphite sheet, it is electrically (semi) conductive. Generally, when the carbon powder is mixed or the graphite sheet is applied, the thermal conductivity can be increased as compared with the case where the ceramic powder is mixed.

When the thermoelectric element 200 is electrically (semi) conductive, at least one surface of the thermoelectric element 200, for example, an upper surface thereof, is thinly coated with thermally conductive silicone, which is electrically insulated, Respectively.

According to this structure, the upper surface having electric insulation comes into contact with the heat dissipating unit, and the lower surface having the electric conductivity comes into contact with the heat source so that heat conduction is good while maintaining electrical insulation between the heat source and the heat dissipating unit, Has an advantage of shielding electromagnetic waves.

As another example, the thermoelectric element 200 may have radio wave absorbency. In this case, a magnetic powder is mixed with the polymer resin or rubber to have electrical (semi) conductivity.

As described above, when the thermoelectric element 200 is electrically (semi) conductive, it has a relatively good thermal conductivity and has an advantage of preventing static electricity or shielding or absorbing electromagnetic waves.

The thermoelectric element 200 is flexible and has a density and a hardness higher than that of the core 110 so that the heat source and the heat dissipation unit are closely contacted by the external pressure so that heat generated from the heat dissipation source is efficiently supplied to the heat dissipation unit through the thermoelectric element 200 And is easily transmitted.

Since the thermoelectric element 200 is inserted and physically engaged with the through hole 112, the heat conduction member of this embodiment may be particularly useful when rapidly transferring the heat generated in the local region to the heat dissipation unit. For example, if a thermoelectric element 200 having a good thermal conduction function is disposed in a region where heat is directly generated and a core 110 having a poor thermal conduction function is disposed in the other portion, To the heat dissipation unit.

In addition, the manufacturing cost can be reduced by applying the expensive thermoelectric element 200 to only the necessary parts.

The upper surface and the lower surface of the thermoelectric element 200 protrude from the inlet of the through hole 112 or form the same horizontal level, It can be located inside.

1, when the area of the core 110 is much larger than the cross-sectional area of the thermoelectric element 200, the thermoelectric element 200 can protrude from the inlet of the through hole 112. When the force is applied to the object, Since the thermoelectric element 200 has a high density and a high hardness, the strength of the thermoelectric element 200 is increased until the object hits the core 110 of the body 100 However, since the area of the core 110 is much larger than the cross-sectional area of the thermoelectric element 200, this is negligible.

When the upper surface and the lower surface of the thermoelectric element 200 have the same horizontal level as that of the entrance of the through hole 112, the thermoelectric element 200 and the core 110 simultaneously contact each other when a force is applied to the object.

This case is most preferred, but since there is dimensional tolerance in the manufacture and the shape of the object is varied, it may be difficult to achieve a precise horizontal level.

The thermoelectric element 200 may be located inside the entrance of the through hole 112 when the size of the thermoelectric element 200 is similar to the area of the core 110. When applying force to the object, 110, but since the density and hardness of the core 110 are low, the thermoelectric element 200 can be brought into contact with the thermoelectric element 200 elastically and with less force.

For example, even if the thermoelectric element 200 is located inside the inlet of the through hole 112, the thermoelectric element 200 can physically contact the object when the thermoelectric element 200 is located within a range in which the object is pressed between the objects.

On the other hand, whether the top and bottom surfaces of the thermoelectric element 200 protrude from the inlet of the through hole 112 or the protrusion height, respectively, may be equal to or different from each other.

An adhesive may be applied to at least one portion between the outer surface of the thermoelectric element 200 and the inner surface of the through hole 112 or after the thermoelectric element 200 is fitted in the through hole 112, The adhesive may be applied at least at one point along the boundary between the core 110 and the thermoelectric element 200 at the inlet.

The applied pressure-sensitive adhesive may be a pressure-sensitive adhesive having elasticity and flexibility, and may have heat conductivity, for example, a heat-conductive silicone pressure-sensitive adhesive.

When the side surface of the thermoelectric element 200 has a self-adhesive force, it is self-attached to the side surface of the through hole 112 to provide more reliable adhesion.

According to this structure, since the body 100 and the thermoelectric element 200 are mechanically integrated, it is possible to prevent the thermoelectric element 200 from moving up or down in the through hole 112 due to vibration or impact applied from the outside And it is easy for the body 100 and the thermoelectric element 200 to receive and absorb the external vibration or shock integrally.

In addition, since the body 100 is firmly integrated with the thermoelectric element 200 and the thermoelectric element 200 is not easily separated from the body 100 by an external force, the thermoelectric element can be mounted on or separated from the object at a time And the manufacturing cost is reduced.

In addition, since the thermoelectric element 200, which is relatively poor in elasticity and restoring force, is integrated with the body 100 having the core 110 having good elasticity and restoring force, when the heat conduction member is pressed and spread by the object, Is restored by the restoring force, and the integrated thermoelectric element 200 can be partially restored according to the height.

At least one of the upper surface and the lower surface of the thermoelectric element 200 has a self-adhesive force so that the thermoelectric element 200 can easily be mounted on an object facing the thermoelectric element 200. For example, the surface of the thermoelectric element 200 facing the heat source can have self- Has no self-adhesive force and is easy to vacuum pick up and handle.

4. Adhesive

The pressure-sensitive adhesive 120 may be a flexible urethane pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, or a silicone pressure-sensitive adhesive having both elasticity and flexibility, and may have thermal conductivity.

The pressure-sensitive adhesive 120 may be a substrate-type pressure-sensitive adhesive having a base material such as a PET film in its interior with a double-sided pressure-sensitive adhesive tape, or an inorganic material type pressure-

In the case where the heat conduction member includes the support base 130 as in this embodiment, the pressure-sensitive adhesive 120 is stacked on the lower surface of the support base 130. In the case where the support base 130 is not provided, And the thermally conductive member can be easily adhered to the object by the adhesive 120.

2, the portion of the adhesive 120 corresponding to the edge of the lower inlet of the through hole 112 protrudes inwardly of the through hole 112 to form the stopper 122. In other words, the engagement protrusion 122 having a constant width from the edge of the through hole 112 to the inside is formed in a flange shape.

The latching jaw 120 may be formed along the edge of the through hole 112, and may be formed continuously or intermittently, and at least a part thereof may project inward.

According to this structure, the edge portion of the lower surface of the thermoelectric element 200 is seated on the latching protrusion 122 and is maintained in a state of being adhered by the adhesive 120.

As a result, since a part of the lower surface of the thermoelectric element 200 is mounted on the tackifier 120 and is transported and handled in a tacky state, it is possible to prevent the thermoelectric element 200 from being separated from the body 100 in the process . In addition, when the operator removes the heat conduction member from the release sheet and attaches the heat conduction member to the object, it is possible to prevent the thermoelectric element 200 from remaining on the release sheet and falling off only the body 100.

Since the density and hardness of the thermoelectric element 200 are large when the thermoelectric element 200 is used, the lower surface of the thermoelectric element 200 is thermally contacted with other objects as the stopper 122 is crushed by the object.

Hereinafter, the heat transfer operation by the heat conduction member will be described.

3 (a) and 3 (b) show a state in which the heat conduction member is applied.

The heat conducting member may be embedded in the carrier pocket and reeled or arranged on the release sheet and automatically mounted to the object by vacuum pick-up.

A stationary plate 40 having permanent magnets 20 and 22 arranged therein is installed in an instrument 10 constituting an earphone and a voice coil 30 is housed in the stationary plate 40 and moves up and down according to an electrical signal, And outputs a voice signal.

When the heat conductive member of the present invention is adhered to the upper surface of the metal fixing plate 40 and the metal cover 50 is covered and assembled on the upper surface of the fixing plate 40, 20-40% of the heat conductive member is pressed, And the upper surface and the lower surface are in contact with the cover 50 and the fixing plate 40, respectively.

In this state, the heat generated by the vibration of the voice coil 30 is transmitted to the fixing plate 40 and is transmitted to the cover 50 through the thermoelectric element 200 of the heat conduction member to be thermally cooled and thermally dispersed.

In addition, when the vibration of the voice coil 30 is transmitted to the heat transfer member through the fixing plate 40, the core 110 of the heat transfer member is composed of an elastic foam having pores, that is, a sponge, .

In addition, the thermoelectric element 200 also provides the cover 50 with the heat generated as soon as it absorbs a part of the vibration.

FIG. 4 shows a heat conducting member according to another embodiment of the present invention, and FIG. 5 is a photograph showing an actual product of the heat conducting member of FIG.

In this embodiment, an extension groove 113 connected to the edge of the through hole 112 of the core 110 is formed in pairs so as to face each other, and a finger (not shown) , 210 are protruded.

According to this structure, the area of contact of the thermoelectric element 200 with the core 110 in the through hole 112 is increased by the finger 210, and the through hole 112 is recessed Structure, it is possible to make it difficult for the thermoelectric element 200 to be detached from the through hole 112.

Referring to FIG. 5, the thermoelectric element 200 may be configured to have a color different from that of the core 110 so that the thermoelectric element 200 can be surely distinguished from the core 110, thereby facilitating visual inspection. For example, It is possible to intuitively know the portion where cooling is performed.

6 shows a heat conducting member according to another embodiment of the present invention.

In this embodiment, a cushioning groove 114 connected from the edge of the through hole 112 of the core 110 is formed in a pair.

As described above, the density and hardness of the thermoelectric element 200 are higher than the density and hardness of the core 110, so that the pressing force can be determined mainly by the thermoelectric element 200.

However, the thermoelectric element 200 is inserted into the through hole 112 of the core 110, and the edge is limited by the core 110 to extend in the radial direction. In other words, when the heat conduction member is pressed in the vertical direction, the thermoelectric element 200 receives a large portion of its force in the vertical direction, and this force forces the edge of the thermoelectric element 200 to propagate in the radial direction, (110) restricts the pressing force, so that the pressing force is increased more and more.

Therefore, when the edge of the thermoelectric element 200 is extended in the radial direction by forming the buffer groove 114 connected from the edge of the through hole 112, the edge of the through hole 112 is formed by the buffer groove 114 So that the thermoelectric element 200 can easily spread in the radial direction. As a result, the pressing force of the thermoelectric element 200 up and down can be reduced or dispersed.

The buffer groove 114 may be formed so as not to be formed in the same shape as this embodiment when the dimension of the heat conduction member is small but to be adjacent to but not connected to the through hole 112. [

As described above, the buffer groove 114 functions to press the thermoelectric element 200 even with a small force. As a result, the heat conduction member is brought into contact with each object with a small force to smoothly transfer heat between the objects. do.

The application of the heat conduction member of this embodiment is not limited to the earphone, and is interposed between the heat radiating unit and the semiconductor, receiver, motor, light emitting element, display panel or the like which provides heat inside the electronic device, It can serve to absorb shock.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Accordingly, the scope of the present invention should not be construed as being limited to the embodiments described above, but should be construed in view of the claims set forth below.

100: Body
110: elastic core
112: Through hole
113: Extended groove
114: buffering groove
120: Adhesive
130: Support
200: thermoelectric element

Claims (15)

A heat conduction member interposed between opposed objects to transmit heat in the vertical direction,
A body having an elastic core having a through hole penetrating the upper surface and the lower surface in the thickness direction, and a pressure sensitive adhesive laminated on the lower surface of the core; And
And a thermoelectric element sandwiched between the through holes,
Wherein at least a part of the portion corresponding to the edge of the lower inlet of the through hole is protruded to the inside of the through hole to form a latching jaw to support the lower surface of the thermoelectric element and maintain adhesion. Conductive member. A heat conduction member interposed between opposed objects to transmit heat in the vertical direction,
A body having an elastic core having a through hole penetrating the upper surface and the lower surface in the thickness direction, a supporting base adhered to the upper or lower surface of the core, and a pressure sensitive adhesive laminated on the lower surface of the supporting base; And
And a thermoelectric element sandwiched between the through holes,
Wherein at least a part of the portion corresponding to the edge of the lower inlet of the through hole is protruded to the inside of the through hole to form a latching jaw to support the lower surface of the thermoelectric element and maintain adhesion. Conductive member. In claim 2,
Wherein the core is formed by adhering a liquid polymer corresponding to the core onto the support by curing. In claim 2,
Wherein the support is a polymer film or metal foil having a uniform thickness. [Claim 2]
And a cushion groove is formed in the core, the cushion groove being connected to the edge of the through hole. [Claim 2]
Wherein a protrusion is formed in the core so as to extend from the edge of the through hole, and a finger which fits into the expansion groove is protruded from the thermoelectric element. [Claim 2]
Wherein at least one of the upper surface and the lower surface of the thermoelectric element forms a similar horizontal level with respect to the inlet of the through hole or is located inside the inlet. [Claim 2]
Wherein the color of the thermoelectric element and the color of the core are different from each other. [Claim 2]
Wherein the upper surface and the lower surface of the thermoelectric element have no self-adhesive force. [Claim 2]
Wherein the pressure-sensitive adhesive is a double-sided pressure-sensitive adhesive tape. In claim 10,
And a PET film is interposed in the pressure-sensitive adhesive. [Claim 2]
Wherein the pressure-sensitive adhesive is thermally conductive. delete A speaker device comprising a fixed plate on which a permanent magnet is mounted, a voice coil which vibrates with respect to the permanent magnet,
A heat conduction member is provided between the fixing plate and the cover,
Wherein the heat conduction member comprises:
An elastic core having a through hole penetrating the upper surface and the lower surface in the thickness direction, and a pressure sensitive adhesive layer laminated on the lower surface of the core and adhered to the fixing plate; And
And a thermoelectric element which is coupled to the through hole and is in thermal contact with a lower surface and an upper surface of the fixed plate and the cover,
Wherein at least a part of the portion corresponding to the edge of the lower inlet of the through hole is protruded to the inside of the through hole to form a latching jaw to support the lower surface of the thermoelectric element and maintain the adhesive. Device. A speaker device comprising a fixed plate on which a permanent magnet is mounted, a voice coil which vibrates with respect to the permanent magnet,
A heat conduction member is provided between the fixing plate and the cover,
Wherein the heat conduction member comprises:
A body having an elastic core formed with a through hole penetrating the upper surface and the lower surface in the thickness direction, a supporting base adhered to an upper surface or a lower surface of the core, and a pressure sensitive adhesive laminated on the lower surface of the supporting base and adhered to the fixing plate; And
And a thermoelectric element which is coupled to the through hole and is in thermal contact with a lower surface and an upper surface of the fixed plate and the cover,
Wherein at least a part of the portion corresponding to the edge of the lower inlet of the through hole is protruded to the inside of the through hole to form a latching jaw to support the lower surface of the thermoelectric element and maintain the adhesive. Device.

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