heat sink

Abstract

The utility model relates to a radiator (1) has: pedestal portion (20), have first surface (21) and with first surface (21) opposite second surface (22), on second surface (22) heat connection has heating body (100), and fin (10), set up on first surface (21) of pedestal portion (20) on, pedestal portion (20) and fin (10) integrated molding, at least one part of heat conduction component is buried in the radiator (1).

Description

Technical Field

[0001] This utility model relates to a radiator having a base portion with a heat-generating element thermally connected and heat sink fins, and in particular, to a radiator in which heat conduction components are embedded. Background Technology

[0002] As a means of cooling heat-generating components such as electronic parts housed within a designated space, heat sinks with heat sink fins installed at the base where the heat-generating component is thermally connected are sometimes used. Furthermore, with the increasing functionality of various devices, the heat generated by the electronic components and other heat-generating components mounted on these devices is increasing, making it increasingly important to improve the cooling performance of heat sinks.

[0003] To improve the cooling performance of a radiator, it is necessary to increase the efficiency of the heat sink fins. Therefore, heat pipes are installed along the plane of the radiator's base. Through the heat transfer function of the heat pipes, heat from the heating element is transferred to the entire area of ​​the base where the heat sink fins are installed. By using heat pipes to transfer heat from the heating element to the entire area of ​​the base where the heat sink fins are installed, the base is heated evenly, the overall heat load on the heat sink fins is uniform, and the efficiency of the heat sink fins is improved.

[0004] When heat pipes are installed in the base of a radiator, it is necessary to improve the thermal connection between the heat pipes and the heat sinks. Therefore, a radiator is proposed in which at least a portion of the container for the heat pipes and one end of a plurality of heat sinks are held inside a chamber in such a way that the heat sinks are upright relative to the container. Molten liquid is then injected into the chamber and solidified, thereby integrally casting and connecting one end of the heat sink and the container (Patent Document 1).

[0005] In Patent Document 1, a heat pipe container and one end of a heat sink are integrally cast using a cover formed by solidifying molten liquid as a base, and the heat sink is connected in an upright state relative to the container, thereby improving the thermal connection between the heat sink and the heat pipe container.

[0006] On the other hand, in Patent Document 1, since the separate heat sink, shroud, and heat pipe container are cast into one piece, there is contact resistance between the heat sink and the shroud. Therefore, it is necessary to improve the thermal connection between the heat sink and the shroud, that is, the heat transfer from the shroud to the heat sink. Furthermore, from the viewpoint of the contact resistance between the heat sink and the shroud, Patent Document 1 also presents a problem in improving the heat sink efficiency by uniformizing the heat load throughout the heat sink as a whole.

[0007] Furthermore, for example, due to the increasing volume of wireless communication in mobile phone base stations in recent years, substrates are often used that are complexly configured with multiple electronic components, such as antennas or amplifiers, which generate relatively little heat, and electronic components, such as FPGAs (Field Programmable Gate Arrays), which generate a lot of heat. When multiple electronic components with varying heat outputs mounted on the substrate are thermally connected to a heat sink, it is difficult to maintain uniform heat distribution at the base of the heat sink. As a result, it is difficult to transfer heat evenly to the heat sink, and the heat sink efficiency is reduced.

[0008] Furthermore, to prevent interference between electronic components, recesses, or shielding portions, corresponding to the positions and shapes of the electronic components are formed on the heat-receiving surface of the heat sink base. By housing the electronic components within these shielding portions, the electronic components mounted on the substrate are shielded. If a shielding portion is provided on the heat-receiving surface of the heat sink base, heat conduction components such as heat pipes must be arranged to avoid the shielding portion when mounting them on the base member. Therefore, the flexibility in arranging heat conduction components such as heat pipes is reduced, thus creating a problem in achieving uniform heat load across the entire heat sink and improving its efficiency.

[0009] Patent Document 2 proposes a heat sink with the following structure: a base plate, multiple heat sink fins, and grooves are integrally formed by die casting, and heat pipes are embedded in the grooves formed on the side of the base plate opposite to the heat sink fins, so that the heat pipes and the heat source are in close contact. That is, in Patent Document 2, the heat sink diffuses heat generated by the heat source to the base plate and dissipates heat from the heat sink fins. The base plate and heat sink fins are integrally formed as a single component, thereby promoting heat diffusion from the heat-generating electronic components as a whole in the base plate, preventing localized heat concentration, and enabling more efficient heat dissipation to the heat sink fins integrally formed with the base plate. However, Patent Document 2 does not mention improving heat sink efficiency by uniformizing the heat load throughout the heat sink fins.

[0010] Existing technical documents

[0011] Patent documents

[0012] Patent Document 1: Japanese Patent Application Publication No. 11-083361

[0013] Patent Document 2: Japanese Patent Application Publication No. 2000-269676 Utility Model Content

[0014] Problems to be solved by the utility model

[0015] In view of the above, the purpose of this utility model is to provide a heat sink in which the base and the heat sink have excellent thermal connection and the heat conduction components have excellent flexibility in configuration.

[0016] Technical solutions to the problem

[0017] The essential elements of this utility model are as follows.

[0018] [1] A radiator, wherein:

[0019] The base portion has a first surface and a second surface facing the first surface, and a heating element is thermally connected to the second surface; and

[0020] Heat sinks are erected on the first surface of the base.

[0021] The base and the heat sink are integrally formed.

[0022] At least a portion of a heat-conducting component is embedded in the radiator.

[0023] [2] According to the radiator described in [1], wherein,

[0024] The base portion has a block portion extending in the extending direction, and the heat-conducting member is embedded in the block portion.

[0025] [3] According to the radiator described in [1], wherein,

[0026] The heat-conducting component is embedded in the base portion.

[0027] [4] According to the radiator described in [2], wherein,

[0028] The block portion is a protrusion of the first surface that protrudes from the first surface of the base portion in the thickness direction of the base portion.

[0029] [5] According to the radiator described in [2], wherein,

[0030] The block portion is a protrusion of the second surface that protrudes from the second surface of the base portion in the thickness direction of the base portion.

[0031] [6] According to the radiator described in [2], wherein,

[0032] The heat sink has a top portion in the height direction of the heat sink and an upright starting portion, i.e., a base portion, which rises from the base portion, and the block portion is disposed in the middle portion between the top portion and the base portion of the heat sink.

[0033] [7] The radiator according to any one of [1] to [6], wherein,

[0034] The heat conduction component has a heated portion that is thermally connected to the heating element.

[0035] [8] The radiator according to any one of [1] to [6], wherein,

[0036] The heat conduction component is entirely embedded in the radiator.

[0037] [9] According to the radiator described in [1], wherein,

[0038] At least a portion of the heat-conducting member has an exposed portion that protrudes from the second surface of the base portion and is in direct contact with the heating element.

[0039]

[10] According to the radiator described in [5], wherein,

[0040] At least a portion of the heat-conducting member has an exposed portion protruding from the protrusion on the second surface, the exposed portion being in direct contact with the heating element.

[0041]

[11] The radiator according to any one of [1] to [6], wherein,

[0042] The heat-conducting component extends along the extension direction of the base portion.

[0043]

[12] According to the radiator described in [9] or

[10] , wherein,

[0044] The heat-conducting member has a stepped portion that bends in the thickness direction of the base portion, and the exposed portion is formed by the stepped portion.

[0045]

[13] According to the radiator described in [9] or

[10] , wherein,

[0046] The heat-conducting member has a protrusion that protrudes in the thickness direction of the base portion, and the protrusion forms the exposed portion.

[0047]

[14] The radiator according to any one of [1] to [6], wherein,

[0048] The heat conduction component is a heat pipe or a heat spreader.

[0049]

[15] The radiator according to any one of [1] to [6], wherein,

[0050] The radiator is a cast component, and the heat conduction component is embedded in the radiator by inlay casting.

[0051]

[16] According to the radiator described in

[14] , wherein,

[0052] A sealed injection pipe, used to inject working fluid into the heat pipe or the vapor chamber, is positioned further inward than the periphery of the radiator.

[0053]

[17] According to the radiator described in

[14] , wherein,

[0054] The heat pipe is a flat heat pipe that has been processed into a flat shape.

[0055]

[18] According to the radiator described in [1], wherein,

[0056] The device has a block portion extending along the extension direction of the base portion, and at least a portion of the heat-conducting member is embedded in the block portion.

[0057] The block portion is a protrusion on the first surface that protrudes from the first surface of the base portion in the thickness direction of the base portion.

[0058] A heat sink is erected on the block portion, and is lower than the heat sink erected on the first surface outside the block portion.

[0059]

[19] According to the radiator described in [1], wherein,

[0060] The shape of the heat-conducting component along its length is such that it has a curved portion when viewed from above.

[0061]

[20] The radiator according to any one of [1] to [6], wherein,

[0062] The base portion has a first direction and a second direction orthogonal to the first direction, and the heat sink extends along a direction inclined relative to the second direction of the base portion and in a direction inclined relative to the first direction.

[0063] In the form of the radiator of this utility model, the radiator has: a base portion that is thermally connected to a heat-generating element; a heat sink fin that serves as a heat exchange device; and a heat conduction member. Furthermore, in the form of the radiator of this utility model, the base portion and the heat sink fin are integrally formed; therefore, the base portion and the heat sink fin are a single component, and no boundary portion is formed between the base portion and the heat sink fin.

[0064] Furthermore, in the form of the radiator of this utility model, at least a portion of the heat conduction member is embedded in the radiator, so that the outer peripheral surface of at least a portion of the heat conduction member is not exposed from the surface of the base portion.

[0065] Utility Model Effect

[0066] According to the form of the heat sink of this utility model, it has: a base portion having a first surface and a second surface facing the first surface, on which a heating element is thermally connected; and a heat sink fin, which is vertically disposed on the first surface of the base portion; the base portion and the heat sink fin are integrally formed, thereby suppressing the contact resistance between the base portion and the heat sink fin and improving the thermal connection between the base portion and the heat sink fin. Furthermore, according to the form of the heat sink of this utility model, at least a portion of a heat conduction member is embedded in the heat sink, thus providing excellent freedom in the arrangement of the heat conduction member and excellent thermal connection of the heat conduction member. Therefore, according to the form of the heat sink of this utility model, even when multiple electronic components with varying heat outputs are thermally connected to the heat sink, the heat uniformity of the base portion of the heat sink can be maintained, and the heat transfer from the base portion to the heat sink fin as a whole is equalized, thus ensuring smooth heat transfer from the base portion to the heat sink fin and uniformizing the heat load throughout the heat sink fin as a whole. Therefore, in the radiator of this utility model, the heat dissipation characteristics of the radiator are improved because the efficiency of the heat sink is increased.

[0067] According to the form of the radiator of this utility model, by having a block portion extending along the extension direction of the base portion, the heat conduction member is embedded in the block portion, thereby reliably ensuring the embedding position of the heat conduction member.

[0068] According to the form of the radiator of this utility model, the heat conduction component is embedded in the base portion, thereby utilizing the heat conduction function of the heat conduction component to make the base portion as a whole smoothly and evenly heated. The heat transfer from the base portion in the entire heat sink is equalized. Therefore, the heat load in the entire heat sink can be further uniformized, and the heat sink efficiency can be further improved.

[0069] According to the form of the heat sink of this utility model, the block portion is a protrusion of the first surface of the base portion protruding in the thickness direction of the base portion. By utilizing the heat conduction function of the heat conduction member, the base portion is reliably and evenly heated as a whole, and the heat transfer from the base portion to the entire heat sink is reliably and evenly distributed. Therefore, the heat load in the entire heat sink can be further homogenized, the heat sink efficiency can be further improved, and the heat exchange function of the heat sink can be reliably enhanced.

[0070] According to the form of the heat sink of this utility model, the block portion is disposed in the middle part between the top part and the base part of the heat sink. By utilizing the heat conduction function of the heat conduction component, the entire heat sink is reliably and evenly heated. Therefore, the heat sink efficiency can be reliably improved.

[0071] According to the form of the radiator of this utility model, the heat conduction component is embedded in the radiator as a whole, thereby further improving the thermal connectivity of the heat conduction component in the radiator.

[0072] According to the form of the radiator of this utility model, at least a portion of the heat conduction member has an exposed portion that protrudes from the second surface of the base portion. The exposed portion is in direct contact with the heat-generating element, thereby further improving the thermal connection between the heat-generating element and the heat conduction member, and thus further improving the heat dissipation characteristics of the radiator.

[0073] According to the form of the radiator of this utility model, the heat conduction component is a heat pipe or a heat spreader. Since the heat conduction component has heat transport characteristics, the heat load in the heat sink can be further homogenized, thereby further improving the heat sink efficiency.

[0074] According to the form of the radiator of this utility model, the radiator is a cast component, and the heat conduction component is embedded in the radiator by inlaying, thereby further improving the thermal connectivity of the heat conduction component in the radiator.

[0075] According to the form of the radiator of this utility model, the sealed injection pipe of the heat pipe or the heat spreader is set in a position further inward than the periphery of the radiator, so that even if the radiator is placed in an external environment exposed to wind and rain, corrosion of the heat pipe or heat spreader can be prevented, and the durability of the radiator can be improved.

[0076] According to the shape of the heat sink of this utility model, the heat pipe is a flat heat pipe, which helps to miniaturize the heat sink.

[0077] According to the form of the radiator of this utility model, it has a block extending along the extension direction of the base portion, and at least a portion of the heat conduction member is embedded in the block portion. The block portion is a protrusion of the first surface protruding from the first surface of the base portion in the thickness direction of the base portion. A heat sink is erected on the block portion that is lower than the heat sink erected on the first surface outside the block portion. Thus, the heat that cannot be dissipated by the heat sink in the block portion where the heat conduction member is present is transferred to the higher heat sink erected in the part where the heat conduction member is not present, i.e., the heat sink with a large rib area. Therefore, the heat load in the entire heat sink can be uniformized, and the efficiency of the heat sink can be further improved. Attached Figure Description

[0078] Figure 1 This is a perspective view illustrating the heat sink of the first embodiment of the present invention.

[0079] Figure 2This is an explanatory diagram illustrating the structure of the radiator according to the first embodiment of the present invention.

[0080] Figure 3 This is an explanatory diagram illustrating the configuration of the heat conduction components of the radiator in the first embodiment of the present invention from a top view.

[0081] Figure 4 This is the radiator of the first embodiment of the present invention. Figure 3 Side sectional view of line AA in the diagram.

[0082] Figure 5 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator in the first embodiment of this utility model.

[0083] Figure 6 This is a side cross-sectional view illustrating the injection pipe used for the heat pipe installed in the heat sink of the first embodiment of this utility model.

[0084] Figure 7 This is an explanatory diagram illustrating an example of how to use the radiator according to the first embodiment of the present invention.

[0085] Figure 8 This is a side sectional view of the radiator of the second embodiment of this utility model.

[0086] Figure 9 This is a side sectional view of the radiator according to the third embodiment of this utility model.

[0087] Figure 10 This is a side sectional view of the radiator according to the fourth embodiment of this utility model.

[0088] Figure 11 This is a perspective view illustrating the radiator of the fourth embodiment of this utility model when viewed from below.

[0089] Figure 12 This is a side sectional view of the radiator according to the fifth embodiment of this utility model.

[0090] Figure 13 This is an explanatory diagram of the heat pipe used in the radiator of the fifth embodiment of this utility model.

[0091] Figure 14 This is a side sectional view of the radiator according to the sixth embodiment of this utility model.

[0092] Figure 15 This is a side sectional view of the radiator according to the seventh embodiment of this utility model.

[0093] Figure 16This is a perspective view illustrating the radiator of the seventh embodiment of this utility model when viewed from below.

[0094] Figure 17 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator provided in the eighth embodiment of this utility model.

[0095] Figure 18 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator provided in the ninth embodiment of this utility model.

[0096] Figure 19 This is a side cross-sectional view illustrating the injection pipe used in the heat pipe provided in the heat sink of the ninth embodiment of this utility model.

[0097] Figure 20 This is an explanatory diagram of the injection pipe used in the heat pipe of the heat sink provided in the tenth embodiment of this utility model.

[0098] Figure 21 This describes a side view of the injection pipe used in the heat pipe of the radiator provided in the tenth embodiment of this utility model.

[0099] Figure 22 This is an explanatory diagram illustrating the configuration of the heat conduction components of the eleventh embodiment of the present invention from a top view.

[0100] Figure 23 This is an explanatory diagram illustrating the configuration of the heat conduction components of the radiator in the twelfth embodiment of the present invention from a top view.

[0101] Figure 24 This is an explanatory diagram illustrating the configuration of the heat sink fins of the thirteenth embodiment of the present invention from a top view.

[0102] Figure 25 This is an explanatory diagram illustrating the configuration of the heat sink fins of the fourteenth embodiment of the present invention from a top view.

[0103] Figure 26 This is an explanatory diagram illustrating the configuration of the heat sink fins of the fifteenth embodiment of the present invention from a top view.

[0104] Figure 27 This is a side sectional view of the radiator according to the sixteenth embodiment of this utility model.

[0105] Figure 28 This is a side sectional view of a radiator in another embodiment of this utility model.

[0106] Figure 29 This is a side sectional view of a radiator in another embodiment of this utility model. Detailed Implementation

[0107] The heat sink of the first embodiment of this utility model will be described below with reference to the accompanying drawings. Furthermore, Figure 1 This is a perspective view illustrating the heat sink of the first embodiment of the present invention. Figure 2 This is an explanatory diagram illustrating the structure of the radiator according to the first embodiment of the present invention. Figure 3 This is an explanatory diagram illustrating the configuration of the heat conduction components of the radiator in the first embodiment of the present invention from a top view. Figure 4 This is the radiator of the first embodiment of the present invention. Figure 3 Side sectional view of line AA in the diagram.

[0108] like Figure 1 , 2 As shown, the heat sink 1 of the first embodiment includes: a flat base portion 20; and a plurality of heat sink fins 10, 10, 10... disposed on the surface of the base portion 20. The base portion 20 has a first surface 21 and a second surface 22 facing the first surface 21. A heat-generating element 100 is thermally connected to the second surface 22 of the base portion 20. The plurality of heat sink fins 10, 10, 10... are erected on the first surface 21 of the base portion 20.

[0109] The base portion 20 is a plate-shaped portion having a first direction L1 and a second direction L2 orthogonal to the first direction L1. The shape of the base portion 20 is not particularly limited; in the heat sink 1, for ease of explanation, it is depicted as a quadrilateral shape when viewed from above (from a position facing the heat sink 10). The base portion 20 is thermally connected to the heat sink 100 by abutting against the second surface 22 of the base portion 20. Therefore, the second surface 22 of the base portion 20 functions as a heat-receiving surface.

[0110] A plurality of plate-shaped heat sinks 10, 10, 10… are erected on the base portion 20. The heat sinks 10 are erected at a predetermined angle relative to the extending direction of the first surface 21 on the first surface 21 of the base portion 20. In the radiator 1, the heat sinks 10 are erected in a direction substantially perpendicular to the extending direction of the first surface 21. Furthermore, each heat sink 10 extends from one end of the base portion 20 in the second direction L2 to the other end. In the radiator 1, for ease of explanation, the heat sinks 10 extend from one end of the base portion 20 in the second direction L2 in a substantially straight line to the other end. Each heat sink 10 extends in a direction substantially parallel to the second direction L2 of the base portion 20 and substantially orthogonal to the first direction L1. Furthermore, the heat sinks 10 are at approximately the same height from one end of the base portion 20 in the second direction L2 to the other end.

[0111] A plurality of heat sinks 10, 10, 10... are arranged side by side at predetermined intervals on the first surface 21 of the base portion 20, forming a heat sink assembly 11. In the radiator 1, the plurality of heat sinks 10, 10, 10... are arranged side by side from one end to the other in the first direction L1 of the base portion 20, forming the heat sink assembly 11. The spacing between the plurality of heat sinks 10, 10, 10... is not particularly limited. In the radiator 1, the plurality of heat sinks 10, 10, 10... are arranged side by side at approximately equal intervals as a whole in the heat sink assembly 11.

[0112] In the radiator 1, the base portion 20 and the plurality of heat sinks 10, 10, 10... are integrally formed. That is, it is not a configuration where the base portion 20 and the plurality of heat sinks 10, 10, 10... are combined and thus the plurality of heat sinks 10, 10, 10... are vertically mounted on the base portion 20. Therefore, the base portion 20 and the plurality of heat sinks 10, 10, 10... are integral components, and no joints, adhesives, seams, or other boundary portions are formed between the base portion 20 and the plurality of heat sinks 10, 10, 10....

[0113] The heat sink 10 is not disposed on the second surface 22 of the base portion 20. Therefore, the heat sink 10 is disposed on a single surface of the base portion 20. The heat sink 10 is a thin, flat plate-shaped portion having a main surface 12 and a side surface 13. The main surface 12 of the heat sink 10 mainly contributes to heat dissipation. The width of the side surface 13 constitutes the thickness of the heat sink 10.

[0114] Since the base portion 20 and the plurality of heat sinks 10, 10, 10... are integrally formed, the material of the heat sink 10 is the same as that of the base portion 20. The materials of the heat sink 10 and the base portion 20 are not particularly limited, and examples include copper, copper alloy, aluminum, aluminum alloy, etc.

[0115] like Figure 2 , 3 As shown in Figure 4, at least a portion of the heat conduction member 31 is embedded in the heat sink 1. The heat sink 1 has a block-shaped portion, namely a block portion 40, extending along the extending direction of the base portion 20. The heat conduction member 31 is embedded in the block portion 40; it is sufficient to embed at least a portion of the heat conduction member 31. In the heat sink 1, the block portion 40 extends from one end of the base portion 20 in the second direction L2 to the other end. Furthermore, for ease of explanation, the block portion 40 extends in a generally straight line from one end of the base portion 20 in the second direction L2 to the other end. Therefore, the block portion 40 extends along the extending direction of the heat sink 10.

[0116] In the heat sink 1, the block portion 40 is a protrusion of the first surface 21 of the base portion 20 protruding in the thickness direction of the base portion 20. Heat sinks 10 constituting the heat sink assembly 11 are also erected on the block portion 40. The block portion 40, the base portion 20, and the plurality of heat sinks 10, 10, 10… are integrally formed. Therefore, the block portion 40 is continuously formed with the first surface 21, and no joints, adhesives, seams, or other boundary portions are formed between the block portion 40 and the first surface 21. Furthermore, heat sinks 10, which are lower than the heat sinks 10 erected on the first surface 21 other than the block portion 40, are erected on the block portion 40.

[0117] Since a plurality of heating elements 100, 100, 100... are thermally connected to the second surface 22 of the base portion 20, a plurality of block portions 40 serving as protrusions of the first surface 21 are provided from one end of the first direction L1 of the base portion 20 to the other end. The plurality of block portions 40, 40, 40... are arranged side by side at a predetermined interval.

[0118] The block portion 40 extends from one end of the base portion 20 in the second direction L2 to the other end, and correspondingly, the heat conduction member 31 extends from one end of the base portion 20 in the second direction L2 to the other end. Furthermore, the block portion 40 extends from one end of the base portion 20 in a generally straight line from one end of the base portion 20 in the second direction L2 to the other end, and correspondingly, the heat conduction member 31 extends from one end of the base portion 20 in a generally straight line from one end of the base portion 20 in the second direction L2 to the other end. Therefore, the heat conduction member 31 extends along the extending direction of the base portion 20. Additionally, the heat conduction member 31 extends along the extending direction of the heat sink 10. That is, the heat conduction member 31 extends in a direction substantially parallel to the extending direction of the heat sink 10. Furthermore, heat conduction members 31 are respectively provided on the protrusions of the first surface 21, i.e., on the plurality of block portions 40, 40, 40… Therefore, a plurality of block portions 40, 40, 40... are arranged side by side at predetermined intervals from one end to the other in the first direction L1 of the base portion 20. Correspondingly, a plurality of heat-conducting members 31, 31, 31... are arranged side by side at predetermined intervals from one end to the other in the first direction L1 of the base portion 20. As described above, the plurality of heat-conducting members 31, 31, 31... are arranged side by side along the first direction L1 of the base portion 20 such that the outer peripheral surfaces of the heat-conducting members 31 face each other.

[0119] like Figure 3 , 4 As shown, in the radiator 1, the heat conduction member 31 is entirely embedded in the radiator 1. Specifically, the heat conduction member 31 is entirely embedded in the block portion 40. Therefore, the outer surface of the heat conduction member 31 does not protrude from the block portion 40. That is, the outer surface of the heat conduction member 31 does not protrude from the outer surface of the base portion 20, nor from the outer surface of the radiator 1.

[0120] The heat conduction member 31 has a heat-receiving portion 32 that is thermally connected to the heating element 100. Additionally, the heat conduction member 31 has a portion 34 other than the heat-receiving portion 32. When the heat-receiving portion 32 is heated by the heating element 100, the heat conduction member 31 conducts heat from the heating element 100 from the heat-receiving portion 32 to the portion 34 other than the heat-receiving portion 32 along the extending direction of the heat conduction member 31. Furthermore, when the heat conduction member 31 is thermally connected to a plurality of heating elements 100, 100, 100…, the portion thermally connected to the heating element 100 that generates the most heat among the plurality of heating elements 100, 100, 100… functions as the heat-receiving portion 32.

[0121] In the radiator 1, a heat pipe 30, serving as a heat transfer component 31, is provided. The heat pipe 30 comprises: a tubular container 33, sealed at one and the other end; a capillary structure (not shown), housed within the container 33 and possessing capillary force; and a working fluid (not shown), such as water, sealed within the internal space of the container 33. The container 33 is a tubular material with its internal space sealed. Furthermore, the internal space of the container 33 is depressurized through a degassing process. The heated portion 32 of the heat pipe 30 functions as an evaporation section, while the portion 34 outside the heated portion 32 functions as a condensation section.

[0122] The shape of container 33 in the direction orthogonal to the length direction (radial) is circular, elliptical, flat, rectangular, etc., without particular limitation, but it is circular in radiator 1.

[0123] The radiator 1 is a cast component, and the heat conduction component 31 (heat pipe 30) is embedded in the radiator 1 by inlay. The heat pipe 30 is integrally cast with the block portion 40 of the radiator 1, and the heat pipe 30 is embedded and fixed in the protrusion of the first surface 21, i.e., the block portion 40. According to the above, the heat pipe 30 does not need to be fixed to the base portion 20 by soldering. Therefore, it is not necessary to form a plating layer required for soldering on the outer surface of the container 33 of the heat pipe 30.

[0124] The material of the container 33 of the heat pipe 30 can be the same as or different from the material of the base portion 20. Examples of materials that can be used for the container 33 of the heat pipe 30 include copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy, and stainless steel.

[0125] Next, the injection pipe used to inject working fluid into the interior of heat pipe 30 will be described. Figure 5 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator provided in the first embodiment of this utility model. Figure 6 This is a side cross-sectional view illustrating the injection pipe used for the heat pipe installed in the heat sink of the first embodiment of this utility model.

[0126] The heat pipe 30 is manufactured as follows: after depressurizing the internal space of the container 33, working fluid is injected into the internal space of the container 33 through an injection pipe that communicates with and extends from the internal space of the container 33; after injecting the working fluid, a predetermined portion of the injection pipe is sealed, thus sealing the working fluid into the internal space of the container 33. Figure 5 , 6 As shown, the sealed injection pipe 35 used to inject working fluid into the heat pipe 30 is located inward of the periphery 23 of the radiator 1. Therefore, the sealed injection pipe 35 is not formed to protrude outward from the periphery 23 of the radiator 1.

[0127] In the radiator 1, the sealed injection tube 35 extends vertically in the direction perpendicular to the extension direction of the heat pipe 30, and is positioned further inward than the periphery 23 of the radiator 1. In the radiator 1, the sealed injection tube 35 extends from the container 33 of the heat pipe 30 toward the second surface 22. Furthermore, in the radiator 1, the vertical dimension of the sealed injection tube 35 is smaller than the thickness of the base portion 20. Therefore, when the radiator 1 is connected to a substrate on which the heat-generating element 100 is mounted, the sealed injection tube 35 is located inside the structure connecting the substrate on which the heat-generating element 100 is mounted and the radiator 1, thus not being exposed to the external environment of the structure. Furthermore, the installation position of the injection tube 35 is not particularly limited; in the radiator 1, the sealed injection tube 35 is located at one end of the container 33. Additionally, the sealed injection tube 35 located at one end of the container 33 has an L-shaped shape.

[0128] Next, we will explain the usage example of radiator 1. Figure 7 This is an explanatory diagram illustrating an example of how to use the radiator according to the first embodiment of the present invention.

[0129] like Figure 7 As shown, by housing the substrate 101 in the frame 102 and thermally connecting multiple heat-generating elements 100, 100, 100... with various heat outputs mounted on the substrate 101 to the base portion 20 of the heat sink 1, the heat sink 1 can cool the multiple heat-generating elements 100, 100, 100... Figure 7 In this configuration, the substrate 101 extends along the direction of gravity, and correspondingly, the heat sink 1 is arranged such that the base portion 20 of the heat sink 1 extends along the direction of gravity, and the heat sink 10 extends along the direction of gravity. The heat-receiving surface of the base portion 20 has a shielding portion, which is a recess corresponding to the position and shape of a plurality of heat-generating elements 100, 100, 100... By accommodating the heat-generating elements 100 in the shielding portion, electromagnetic shielding is provided for the heat-generating elements 100 mounted on the substrate 101, and the heat-generating elements 100 are thermally connected to the heat-receiving surface of the base portion 20.

[0130] When the plurality of heating elements 100, 100, 100... are thermally connected to the heated surface of the base portion 20, heat from the plurality of heating elements 100, 100, 100... is transferred to the base portion 20. At this time, the plurality of heating elements 100, 100, 100... have different heat outputs according to their functions. In addition, the plurality of heating elements 100, 100, 100... are arranged at predetermined locations on the substrate 101 according to their functions. Therefore, when heat from the plurality of heating elements 100, 100, 100... is transferred to the base portion 20, the amount of heat received varies depending on the location of the base portion 20. On the other hand, the heat pipe 30 embedded in the protrusion, i.e., the block portion 40, on the first surface 21 has a heated portion 32 that is thermally connected to the heating element 100 via the base portion 20. Therefore, the heat pipe 30, according to its heat transfer function, transfers heat from the heating element 100 from the evaporation section, which is the heated section 32, to the condensation section, which is the part 34 other than the heated section 32. Thus, the heat transferred from the heating element 100 to the base section 20 diffuses throughout the entire base section 20. The heat diffused in the base section 20 is transferred from the base section 20 to the heat sink 10, and the heat transferred to the heat sink 10 is released to the outside of the radiator 1 through the heat exchange action of the heat sink 10. Furthermore, the cooling air that promotes the heat exchange action of the heat sink 10 may not require a forced cooling device such as a fan; for example, it can be generated from below the direction of gravity by natural convection. Alternatively, a forced cooling device may be used to promote the heat exchange action of the heat sink 10, if necessary.

[0131] The substrate 101, which is equipped with multiple heat-generating elements 100, 100, 100... having various heat outputs, can be exemplified by a substrate installed in a mobile phone base station. Furthermore, a base station installed at the top of a tower can be considered a mobile phone base station.

[0132] Next, an example of the manufacturing method of the radiator 1 will be described. First, a mold corresponding to the shape of the radiator 1 is prepared. Next, a container 33 with an injection pipe 35, which serves as the heat pipe 30, is placed at a predetermined position in the mold. At this time, the internal space of the container 33 is pre-degassed to achieve a depressurized state. Next, molten metal is pressed into the mold to integrate the radiator 1 and the container 33 with the injection pipe 35, and the container 33 with the injection pipe 35 is embedded in the radiator 1 using a casting process. Next, by injecting a working fluid such as water into the internal space of the container 33 through the injection pipe 35, the injection pipe 35 is sealed, thereby obtaining a radiator 1 with the heat pipe 30 embedded therein. Then, as needed, a desired shielding portion is formed on the second surface 22 of the base portion 20.

[0133] The radiator 1 includes: a base portion 20 having a first surface 21 and a second surface 22 facing the first surface 21, on which a heat-generating element 100 is thermally connected; and a heat sink 10, which is erected on the first surface 21 of the base portion 20. The base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 1, even if multiple heat-generating elements 100 with various heat outputs are thermally connected to the base portion 20 of the radiator 1, the heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the heat sink 1, at least a portion of the heat conduction member 31 (heat pipe 30 in the heat sink 1) is embedded in the protrusion, i.e., the block portion 40, of the first surface 21. Therefore, even if a shielding portion is formed on the second surface 22 of the base portion 20, the freedom of arrangement of the heat conduction member 31 (heat pipe 30) is excellent, and the thermal connectivity of the heat conduction member 31 (heat pipe 30) in the heat sink 1 is also excellent. Therefore, in the heat sink 1, even if multiple heat-generating elements (e.g., electronic components) 100 with various heat outputs are thermally connected to the base portion 20 of the heat sink 1, heat is diffused throughout the base portion 20 via the heat conduction member 31 (heat pipe 30), making the base portion 20 uniformly heated. Therefore, the uniformity of the base portion 20 of the heat sink 1 can be maintained, and the heat transfer from the base portion 20 in the entire heat sink 10 is equalized. Therefore, in the heat sink 1, the heat load in the entire heat sink 10 is uniformized, and the heat sink efficiency of the heat sink 10 is improved. Based on the above, in the radiator 1, even if multiple heat-generating elements 100 with various heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0134] In addition, in the radiator 1, the base portion 20 and the heat sink 10 are integrally formed, so even if the radiator 1 is installed outdoors, it can prevent rainwater, dust and other substances from entering between the base portion 20 and the heat sink 10, thus having excellent durability.

[0135] In particular, the radiator 1 has a block portion 40 extending along the extension direction of the base portion 20. By embedding the heat conduction member 31 (heat pipe 30) in the block portion 40, the embedding position of the heat conduction member 31 (heat pipe 30) can be reliably ensured.

[0136] In particular, in the radiator 1, the block portion 40 is a protrusion of the first surface 21 of the base portion 20 protruding in the thickness direction of the base portion 20. This reliably homogenizes the entire base portion 20 using the heat conduction function of the heat conduction member 31 (heat transport function of the heat pipe 30), and reliably equalizes the heat transfer from the base portion 20 throughout the entire heat sink 10. Therefore, in the radiator 1, the heat load throughout the entire heat sink 10 can be further homogenized, the heat sink efficiency of the heat sink 10 can be further improved, and the heat exchange function of the heat sink 10 can be reliably enhanced.

[0137] In particular, in the radiator 1, the thermal connectivity of the heat conduction component 31 (heat pipe 30) in the radiator 1 is further improved by embedding the heat conduction component 31 (heat pipe 30) in the radiator 1.

[0138] In particular, in the heat sink 1, heat pipe 30 is used as heat conduction component 31. Since heat conduction component 31 has excellent heat transport characteristics, the heat load in the heat sink 10 as a whole can be further homogenized, and the heat sink efficiency of the heat sink 10 can be further improved.

[0139] In particular, in the radiator 1, the radiator 1 is a cast component, and the heat conduction component 31 (heat pipe 30) is embedded in the radiator 1 by means of inlay casting, thereby further improving the thermal connectivity of the heat conduction component 31 (heat pipe 30) in the radiator 1.

[0140] In particular, in the radiator 1, by setting the sealed injection pipe 35 of the heat pipe 30 in a position further inward than the periphery 23 of the radiator 1, corrosion of the heat pipe 30 can be prevented even if the radiator 1 is placed in an external environment exposed to wind, rain or the like, thus improving the durability of the radiator 1.

[0141] In particular, in the heat sink 1, the heat pipe 30 is a flat heat pipe, which helps to reduce the size of the heat sink 1.

[0142] Next, the radiator of the second embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the second embodiment are common to those of the radiator of the first embodiment, and the same reference numerals will be used to describe the structural components identical to those of the radiator of the first embodiment. Furthermore, Figure 8 This is a side sectional view of the radiator of the second embodiment of this utility model.

[0143] In the first embodiment of the radiator 1, the shape of the container 33 of the heat pipe 30 in the radial direction orthogonal to the length direction is circular, but instead, as shown below... Figure 8As shown, in the radiator 2 of the second embodiment, the container 33 of the heat pipe 30 has a flat shape in the direction (radial) orthogonal to the length direction. In the radiator 2, the heat pipe 30 is a flat heat pipe formed by flattening the container 33.

[0144] Thus, in the radiator of this utility model, the radial shape of the container 33 of the heat pipe 30 is not particularly limited, but can be appropriately selected according to the usage conditions of the radiator.

[0145] In the radiator 2, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 2, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 2, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 2, at least a portion of the heat pipe 30 is embedded in the protrusion, i.e., the block portion 40, on the first surface 21. Therefore, even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat pipe 30 is excellent, and the thermal connection of the heat pipe 30 in the radiator 2 is also excellent. Therefore, in the radiator 2, even though multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 2, heat is diffused throughout the base portion 20 via the heat pipe 30, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 2, the heat load throughout the heat sink 10 is also uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 2, even though multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0146] Next, the radiator of the third embodiment of this utility model will be described using the accompanying drawings. The main structural components of the radiator of the third embodiment are common to those of the radiators of the first and second embodiments; the same reference numerals will be used to describe the structural components identical to those of the radiators of the first and second embodiments. Furthermore, Figure 9 This is a side sectional view of the radiator according to the third embodiment of this utility model.

[0147] In the radiators 1 and 2 of the first and second embodiments, the block portion 40 where the heat pipe 30 is embedded is the protrusion of the first surface 21, but instead, as shown... Figure 9As shown, in the radiator 3 of the third embodiment, the heat sink 10 has a top portion 15 in the height direction of the heat sink 10 and a base portion 16 that rises from the base portion 20. A block portion 40 for embedding heat pipes 30 is provided in the middle portion 17 between the top portion 15 and the base portion 16 of the heat sink 10. In the radiator 3, each block portion 40 is formed spanning a plurality of heat sinks 10, 10, 10...

[0148] In the radiator 3, a block 40 with embedded heat pipes 30 is provided in the middle part 17 between the top part 15 and the base part 16 of the heat sink 10, and the heat transfer function of the heat pipes 30 is used to reliably homogenize the entire heat sink 10. In the radiator 3, among the plurality of heat sinks 10, 10, 10..., there are heat sinks 10 with block 40 and heat sinks 10 without block 40. Among the plurality of heat sinks 10, 10, 10..., the block 40 is provided on the heat sink 10 that is difficult to homogenize, according to the configuration of the heat-generating element 100 and the heat output of the heat-generating element 100.

[0149] In the radiator 3, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Furthermore, since the block portion 40 with embedded heat pipes 30 is provided in the middle portion 17 of the heat sink 10, even with a shielding portion formed on the second surface 22 of the base portion 20, the arrangement of the heat pipes 30 is highly flexible, and the thermal connection of the heat pipes 30 in the radiator 3 is also excellent. Therefore, in the radiator 3, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 3, the entire heat sink 10 is reliably homogenized through the heat pipes 30, thus enabling uniform heat load throughout the heat sink 10 and improving its heat sink efficiency. Based on the above, in the radiator 3, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0150] Next, the radiator of the fourth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the fourth embodiment are common to those of the radiators of the first to third embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to third embodiments. Furthermore, Figure 10 This is a side sectional view of the radiator according to the fourth embodiment of this utility model. Figure 11 This is a perspective view illustrating the radiator of the fourth embodiment of this utility model when viewed from below.

[0151] In the radiators 1, 2, and 3 of the first to third embodiments, heat pipe 30 is used as a heat conduction component, but instead, as shown below... Figure 10, 11 As shown, in the radiator 4 of the fourth embodiment, a heat exchange plate 50, which is a heat transfer member, is used as a heat conduction member.

[0152] The vapor chamber 50 includes: a planar container 53, formed by sealing the periphery of a laminate of one plate-like body and another plate-like body; a capillary structure (not shown) housed within the container 53 and possessing capillary force; and a working fluid (not shown) such as water, sealed within the internal space of the container 53. The plate-shaped container 53 is a component whose internal space is sealed. Furthermore, the internal space of the container 53 is depressurized using a degassing process. The heated portion of the vapor chamber 50 functions as an evaporation section, while the portion outside the heated portion functions as a condensation section.

[0153] The material of the container 53 of the heat spreader 50 can be the same as or different from the material of the base portion 20. Examples of materials that can be used for the container 53 of the heat spreader 50 include copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy, and stainless steel.

[0154] Furthermore, in the radiator 4, a sealed injection pipe (not shown) used to inject working fluid into the interior of the heat spreader 50 is also provided at a position further inward than the periphery of the radiator 4. Additionally, in the radiator 4, the sealed injection pipe extends in a direction perpendicular to the extending direction of the heat spreader 50, thus being positioned further inward than the periphery of the radiator 4.

[0155] Furthermore, in the radiators 1, 2, and 3 of the first to third embodiments, a block 40 with embedded heat pipes 30 is provided, but instead, as shown below... Figure 10 , 11 As shown, in the radiator 4 of the fourth embodiment, the heat spreader 50, which serves as a heat conduction member, is embedded in the base portion 20. Therefore, in the radiator 4, no block portion for embedding the heat conduction member is formed. The radiator 4 is a cast component, and the heat spreader 50 is embedded in the radiator 4 by inlay casting. The heat spreader 50 is integrally cast with the base portion 20 of the radiator 4, and the heat spreader 50 is embedded and fixed to the base portion 20.

[0156] Furthermore, in the radiators 1, 2, and 3 of the first to third embodiments, the heat pipe 30, which serves as a heat transfer component, is entirely embedded in the block portion 40. However, instead of [the heat pipe 30], [the heat transfer component is], as shown below... Figure 10 , 11 As shown, in the heat sink 4 of the fourth embodiment, at least a portion of the heat spreader 50 has an exposed portion 51 that protrudes from the second surface 22 of the base portion 20, and the exposed portion 51 is in direct contact with the heat-generating element 100.

[0157] In the heat sink 4, the heat spreader 50 has a protrusion 52 that protrudes in the thickness direction of the base portion 20, and an exposed portion 51 is formed by the protrusion 52. Specifically, the top of the protrusion 52, which is a flat surface, becomes the exposed portion 51. In the heat sink 4, a protrusion 52 is formed as a protrusion in a portion of the container 53, and a portion of the container 53 is exposed from the second surface 22 of the base portion 20. The interior of the protrusion 52 is a space that communicates with the interior space of the container 53. The number of protrusions 52 formed in the heat spreader 50 can be one or multiple; in the heat sink 4, multiple (two) protrusions are provided.

[0158] In the radiator 4, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 4, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 4, a thin plate-shaped heat spreader 50 is embedded in the base portion 20. Therefore, even if a shielding portion is formed on the second surface 22 of the base portion 20, the arrangement of the heat spreader 50 is highly flexible, and the thermal connection of the heat spreader 50 in the radiator 4 is also excellent. Therefore, in the radiator 4, even though multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 4, heat is diffused throughout the base portion 20 using the heat transfer characteristics of the heat spreader 50, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 4, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 4, even though multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0159] In particular, in the radiator 4, by embedding the heat spreader 50, which serves as a heat conduction component, in the base portion 20, the heat transfer function of the heat spreader 50 is utilized to smoothly homogenize the entire base portion 20. The heat transfer from the base portion 20 in the entire heat sink 10 is equalized. Therefore, the heat load in the entire heat sink 10 can be further homogenized, and the heat sink efficiency of the heat sink 10 can be further improved.

[0160] In particular, in the heat sink 4, a portion of the heat spreader 50 has an exposed portion 51 that protrudes from the second surface 22 of the base portion 20. The exposed portion 51 can directly contact the heat-generating element 100, thereby further improving the thermal connection between the heat-generating element 100 and the heat spreader 50, and thus further improving the heat dissipation characteristics of the heat sink 4.

[0161] Next, the radiator of the fifth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the fifth embodiment are common to those of the radiators of the first to fourth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to fourth embodiments. Furthermore, Figure 12 This is a side sectional view of the radiator according to the fifth embodiment of this utility model. Figure 13 This is an explanatory diagram of the heat pipe used in the radiator of the fifth embodiment of this utility model.

[0162] In the heat sinks 1 and 2 of the first and second embodiments described above, the protrusion, i.e., the block portion 40, of the first surface 21 extends in a generally straight line from one end of the base portion 20 in the second direction L2 to the other end. Correspondingly, the heat pipe 30 extends in a generally straight line from one end of the base portion 20 in the second direction L2 to the other end. Instead, as Figure 12 , 13 As shown, in the radiator 5 of the fifth embodiment, the heat pipe 70, which serves as a heat conduction member, has a stepped portion 62 that bends along the thickness direction of the base portion 20. An exposed portion 61 of the heat pipe 70, which protrudes from the second surface 22 of the base portion 20, is formed by the stepped portion 62. In the radiator 5, the stepped portion 62 is formed at the central portion 73 along the length direction of the heat pipe 70. No stepped portion is formed at one end 71 and the other end 72 of the heat pipe 70; the two ends of the heat pipe 70 extend in a generally straight line.

[0163] In addition, in the heat sink 5, besides the protrusion 40 of the first surface 21, a protrusion 60 of the second surface 22 protrudes from the second surface 22 of the base 20 in the thickness direction of the base 20. In the heat pipe 70, one end 71 and the other end 72 of the heat pipe 70 are embedded in the protrusion 40 of the first surface 21, and the stepped portion 62 located at the central portion 73 in the length direction of the heat pipe 70 is embedded in the protrusion 60 of the second surface 22. As the heat pipe 70 extends from one end 71 to the central portion 73, the heat pipe 70 extends from the protrusion 40 of the first surface 21 to the protrusion 60 of the second surface 22. Furthermore, as the heat pipe 70 extends from the central portion 73 to the other end 72, the heat pipe 70 extends from the protrusion 60 of the second surface 22 to the protrusion 40 of the first surface 21. Therefore, the central portion 73 of the heat pipe 70 has an exposed portion 61 that protrudes from the protrusion (block portion 60) of the second surface 22, and the exposed portion 61 is in direct contact with the heating element 100.

[0164] The degree of the step in the step portion 62 can be appropriately selected according to the height of the part where one end 71 and the other end 72 of the heat pipe 70 are buried relative to the second surface 22. Therefore, the block portion 60 may not be provided, and the area of ​​the central portion 73 of the heat pipe 70 may have an exposed portion 61 that protrudes from the second surface 22, and the exposed portion 61 is in direct contact with the heating element 100.

[0165] In the radiator 5, there is a heat pipe 70 with an exposed portion 61 formed by the stepped portion 62 and a heat pipe 30 that is embedded in the protrusion, i.e., the block portion 40, on the first surface 21 and does not have an exposed portion, extending in a generally straight line. In the radiator 5, the shape of the heat pipe 70 in the direction orthogonal to the length direction (radial direction) is circular. In addition, the shape of the heat pipe 30 in the direction orthogonal to the length direction (radial direction) is also circular.

[0166] In the radiator 5, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Furthermore, in the radiator 5, since one end 71 and the other end 72 of the heat pipe 70 are embedded in the protrusion, i.e., the block portion 40, on the first surface 21, the flexibility in the arrangement of the heat pipe 70 is excellent, even with a shielding portion formed on the second surface 22 of the base portion 20, and the thermal connection of the heat pipes 30 and 70 in the radiator 5 is also excellent. Therefore, in the radiator 5, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 5, heat is diffused throughout the base portion 20 via the heat pipes 30 and 70, resulting in uniform heating of the entire base portion 20, and heat transfer from the base portion 20 is equalized throughout the heat sink 10. Therefore, in the heat sink 5, the heat load in the heat sink 10 as a whole is uniform, thereby improving the heat sink efficiency of the heat sink 10.

[0167] In particular, in the radiator 5, a portion of the heat pipe 70 has an exposed portion 61 that protrudes from the second surface 22 of the base portion 20. The exposed portion 61 can directly contact the heating element 100, thereby further improving the thermal connection between the heating element 100 and the heat pipe 70, and thus further improving the heat dissipation characteristics of the radiator 5.

[0168] Next, the radiator of the sixth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the sixth embodiment are common to those of the radiators of the first to fifth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to fifth embodiments. Furthermore, Figure 14 This is a side sectional view of the radiator according to the sixth embodiment of this utility model.

[0169] In the heat sink 5 of the fifth embodiment, the heat pipes 30 and 70 are circular in the radial direction orthogonal to the length direction, but instead, as shown below... Figure 14 As shown, in the radiator 6 of the sixth embodiment, the heat pipe 70, which has a stepped portion 62 in the central portion 73 along its length, has a flat radial shape, and the heat pipe 30, which does not have a stepped portion and extends in a generally straight line, also has a flat radial shape. Therefore, both heat pipes 30 and 70 are flat heat pipes formed by flattening the container.

[0170] Thus, in the radiator of this utility model, the radial shape of the heat pipe 70 with the stepped portion 62 is not particularly limited, and can be appropriately selected according to the usage conditions of the radiator.

[0171] In the radiator 6, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Furthermore, in the radiator 6, one end 71 and the other end 72 of the heat pipe 70 are embedded in the protrusion, i.e., the block portion 40, on the first surface 21. Therefore, even with a shielding portion formed on the second surface 22 of the base portion 20, the arrangement of the heat pipe 70 is highly flexible, and the thermal connection of the heat pipes 30 and 70 in the radiator 6 is excellent. Therefore, in the radiator 6, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat is diffused throughout the base portion 20 via the heat pipes 30 and 70, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 to the entire heat sink 10 is equalized. Therefore, in the heat sink 6, the heat load in the heat sink 10 as a whole is made uniform, thereby improving the heat sink efficiency of the heat sink 10.

[0172] Next, the radiator of the seventh embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the seventh embodiment are common to those of the radiators of the first to sixth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to sixth embodiments. Furthermore, Figure 15 This is a side sectional view of the radiator according to the seventh embodiment of this utility model. Figure 16 This is a perspective view illustrating the radiator of the seventh embodiment of this utility model when viewed from below.

[0173] In the heat sink 4 of the fourth embodiment, a portion of the heat spreader 50 has a protrusion 52 that protrudes in the thickness direction of the base portion 20, and an exposed portion 51 is formed by the protrusion 52, but as Figure 15 , 16As shown, in the heat sink 7 of the seventh embodiment, the heat spreader 50 does not have a protrusion, and the heat spreader 50 is generally flat. Therefore, in the heat sink 7, no exposed portion is formed in the heat spreader 50.

[0174] In the radiator 7, the heat spreader 50 is entirely embedded in the base portion 20. Therefore, in the radiator 7, no block portion is formed for embedding heat conduction components. Based on the above, in the radiator 7, the heat spreader 50 is not in direct contact with the heat-generating element 100.

[0175] In the radiator 7, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Furthermore, in the radiator 7, a thin plate-shaped heat spreader 50 is embedded in the base portion 20. Therefore, even if a shielding portion is formed on the second surface 22 of the base portion 20, the arrangement of the heat spreader 50 is highly flexible, and the thermal connection of the heat spreader 50 in the radiator 7 is also excellent. Therefore, in the radiator 7, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat is diffused throughout the base portion 20 via the heat spreader 50, resulting in uniform heat distribution throughout the base portion 20. Heat transfer from the base portion 20 to the heat sink 10 is also equalized. Therefore, in the radiator 7, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency.

[0176] Next, the radiator of the eighth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the eighth embodiment are common to those of the radiators of the first to seventh embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to seventh embodiments. Furthermore, Figure 17 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator provided in the eighth embodiment of this utility model.

[0177] In the first embodiment, the sealed injection pipe 35 used for injecting working fluid into the heat pipe 30 in the radiator 1 is located inwardly than the periphery 23 of the radiator 1. However, instead of [the following, it is as follows], Figure 17 As shown, in the radiator 8 of the eighth embodiment, the sealed injection pipe 35 extends outward from the peripheral portion 23 of the radiator 1. Therefore, the sealed injection pipe 35 has a shape that protrudes outward from the peripheral portion 23 of the radiator 1.

[0178] Furthermore, in the first embodiment of the heat sink 1, the vertical dimension of the sealed injection pipe 35 is smaller than the thickness of the base portion 20, but instead, as... Figure 17As shown, in the radiator 8 of the eighth embodiment, the vertical dimension of the sealed injection pipe 35 is greater than the thickness of the base portion 20. In the radiator 8, the sealed injection pipe 35 extends from the container 33 of the heat pipe 30 toward the second surface 22 of the base portion 20, and protrudes from the position of the second surface 22 toward the thickness direction of the base portion 20.

[0179] In the radiator 8, the tip of the sealed injection tube 35 may be exposed to the external environment. Therefore, it is necessary to impart corrosion resistance to the outer surface of the injection tube 35. One method for imparting corrosion resistance to the outer surface of the injection tube 35 is, for example, to coat the outer surface of the injection tube 35 with a corrosion-resistant organic solvent. Thus, the sealed injection tube 35 can be either exposed to the external environment from the radiator or not exposed to the external environment.

[0180] Next, the radiator of the ninth embodiment of the present invention will be described using the accompanying drawings. The radiator of the ninth embodiment shares the same main structural components as the radiators of the first to eighth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those in the radiators of the first to eighth embodiments. Furthermore, Figure 18 This is an explanatory diagram of the injection pipe used in the heat pipe of the radiator provided in the ninth embodiment of this utility model. Figure 19 This is a side cross-sectional view illustrating the injection pipe used in the heat pipe provided in the heat sink of the ninth embodiment of this utility model.

[0181] In the first embodiment of the radiator 1, the sealed injection pipe 35 extends from one end of the container 33 of the heat pipe 30, which extends in a generally straight line, toward the second surface 22; however, instead, as... Figure 18 , 19 As shown, in the radiator 9 of the ninth embodiment, the container 33 of the heat pipe 30 has a central portion extending in a generally straight line along the extending direction of the base portion 20, another end portion, and an end portion extending along the thickness direction of the base portion 20. The end face of one end portion of the container 33 protrudes from the second surface 22. The sealed injection pipe 35 extends from the end face of one end portion of the container 33 in a direction perpendicular to the extending direction of the second surface 22, and the sealed injection pipe 35 protrudes entirely from the second surface 22.

[0182] In this way, the sealed injection pipe 35 can be positioned in a direction that is more inward than the periphery 23 of the radiator 9, and the sealed injection pipe 35 can be positioned entirely outside the base portion 20.

[0183] In the radiator 9, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 9, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 9, at least a portion of the heat pipe 30 is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat pipe 30 is excellent, and the thermal connection of the heat pipe 30 in the radiator 9 is also excellent. Therefore, in the radiator 9, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 9, heat is diffused throughout the base portion 20 via the heat pipe 30, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 9, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 9, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0184] Furthermore, in the radiator 9, the sealed injection pipe 35 of the heat pipe 30 is positioned further inward than the periphery 23 of the radiator 9, and the sealed injection pipe 35 is located inside the structure connecting the substrate on which the heating element 100 is mounted and the radiator 9. Therefore, the sealed injection pipe 35 is not exposed to the external environment of the structure. Based on the above, even if the radiator 9 is exposed to external environments such as wind and rain, corrosion of the container 33 of the heat pipe 30 and the sealed injection pipe 35 can be prevented, thus improving the durability of the radiator 9.

[0185] Next, the radiator of the tenth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the tenth embodiment are common to those of the radiators of the first to ninth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to ninth embodiments. Furthermore, Figure 20 This is an explanatory diagram of the injection pipe used in the heat pipe of the heat sink provided in the tenth embodiment of this utility model. Figure 21 This is a side view illustrating the injection pipe used in the heat pipe provided in the heat sink of the tenth embodiment of this utility model.

[0186] In the radiator 9 of the ninth embodiment, the container 33 of the heat pipe 30 has one end extending along the thickness direction of the base portion 20, and the end face of one end of the container 33 is exposed from the second surface 22. Instead, as... Figure 20 , 21As shown, in the radiator 80 of the tenth embodiment, the container 33 of the heat pipe 30 extends in a generally straight line along the extending direction of the base portion 20, and the end face of one end of the container 33 protrudes from the peripheral portion 23 of the radiator 80. The sealed injection pipe 35 extends from the end face of one end of the container 33 in a direction parallel to the extending direction of the second surface 22, and the sealed injection pipe 35 protrudes entirely from the peripheral portion 23 of the radiator 80.

[0187] Alternatively, the sealed injection tube 35 can be positioned further outward than the periphery 23 of the radiator 80, with the entire sealed injection tube 35 located outside the periphery 23. Since the sealed injection tube 35 in the radiator 80 may be exposed to the external environment, corrosion resistance is applied to the outer surface of the injection tube 35 as needed. One method for applying corrosion resistance to the outer surface of the injection tube 35 is, for example, coating the outer surface of the injection tube 35 with a corrosion-resistant organic solvent.

[0188] In the radiator 80, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 80, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 80, at least a portion of the heat pipe 30 is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat pipe 30 is excellent, and the thermal connection of the heat pipe 30 in the radiator 80 is also excellent. Therefore, in the radiator 80, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 80, heat is diffused throughout the base portion 20 via the heat pipe 30, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the entire heat sink 10. Thus, in the radiator 80, the heat load throughout the entire heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 80, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0189] Next, the radiator of the eleventh embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the eleventh embodiment are common to those of the radiators of the first to tenth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to tenth embodiments. Furthermore, Figure 22 This is an explanatory diagram illustrating the configuration of the heat conduction components of the radiator in the eleventh embodiment of the present invention from a top view.

[0190] In the first embodiment, in the radiator 1, the heat conduction member 31 extends along the extending direction of the heat sink 10, but instead, as... Figure 22 As shown, in the radiator 81 of the eleventh embodiment, the heat conduction member 31, which has a generally straight shape in the longitudinal direction, extends at a predetermined angle relative to the extending direction of the heat sink 10. Therefore, in the radiator 81, the heat conduction member 31 does not extend in a direction parallel to the extending direction of the heat sink 10.

[0191] The angle of the heat conduction member 31 relative to the extending direction of the heat sink 10 is not particularly limited, but in the heat sink 81, the heat conduction member 31 extends in a direction approximately orthogonal to the extending direction of the heat sink 10. In the heat sink 81, a heat pipe 30 can be cited as an example of the heat conduction member 31. In the heat sink 81, a plurality of heat pipes 30, 30, 30... are arranged side by side along the extending direction of the heat sink 10.

[0192] Thus, in the radiator of this utility model, the configuration of the heat conduction member 31 for uniformly heating the base portion 20 can be appropriately selected according to the position of the heating element 100, etc.

[0193] In the radiator 81, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 81, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 81, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 81, at least a portion of the heat pipe 30 is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat pipe 30 is excellent, and the thermal connection of the heat pipe 30 in the radiator 81 is also excellent. Therefore, in the radiator 81, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 81, heat is diffused throughout the base portion 20 via the heat pipe 30, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 81, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 81, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0194] Next, the radiator of the twelfth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the twelfth embodiment are common to those of the radiators of the first to eleventh embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to eleventh embodiments. Furthermore, Figure 23This is an explanatory diagram illustrating the configuration of the heat conduction components of the radiator in the twelfth embodiment of the present invention from a top view.

[0195] In the first embodiment of the heat sink 1, the heat conduction member 31 has a generally straight shape along its length and extends along the extension direction of the heat sink 10, but instead, as Figure 23 As shown, in the radiator 82 of the twelfth embodiment, the shape of the heat conduction member 31 in the longitudinal direction is such that it has a curved portion when viewed from above. The curved portion can be a "ko" shape, an L shape, a U shape, etc. when viewed from above, and there is no particular limitation, but in the radiator 82, for ease of explanation, it is a "ko" shape.

[0196] In the radiator 82, the heat conduction member 31 has: a central portion 93 extending in a slightly straight line along the extending direction of the heat sink 10; and one end 91 and another end 92 extending in a substantially straight line at a predetermined angle relative to the extending direction of the heat sink 10. Furthermore, in the radiator 82, one end 91 and the other end 92 of the heat conduction member 31 extend in a direction substantially orthogonal to the extending direction of the heat sink 10. In the radiator 82, a heat pipe 30 can be cited as an example of the heat conduction member 31. Additionally, in the radiator 82, a plurality of heat pipes 30, 30, 30… are arranged with their central portions 93 facing each other.

[0197] Thus, in the radiator of this utility model, the shape of the heat conduction member 31 for uniformly heating the base portion 20 can be appropriately selected according to the position of the heating element 100, etc.

[0198] In the radiator 82, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 82, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 82, at least a portion of the heat pipe 30 is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat pipe 30 is excellent, and the thermal connection of the heat pipe 30 in the radiator 82 is also excellent. Therefore, in the radiator 82, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 82, heat is diffused throughout the base portion 20 via the heat pipe 30, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 82, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 82, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0199] Next, the radiator of the thirteenth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the thirteenth embodiment are common to those of the radiators of the first to twelfth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to twelfth embodiments. Furthermore, Figure 24 This is an explanatory diagram illustrating the arrangement of the heat sink fins in the thirteenth embodiment of the present invention, viewed from above. Additionally, in Figure 24 In order to simplify the explanation of the heat sink configuration, the description of the heat conduction components is omitted.

[0200] In the first embodiment, in the radiator 1, each heat sink 10 extends in a direction substantially parallel to the second direction L2 of the base portion 20 and substantially orthogonal to the first direction L1, but instead, as Figure 24 As shown, in the radiator 83 of the thirteenth embodiment, each heat sink 10 extends along a direction inclined relative to the second direction L2 of the base portion 20 and in a direction inclined relative to the first direction L1. In the radiator 83, each heat sink 10 extends in a generally straight line. In the radiator 83, a plurality of heat sinks 10, 10, 10... are arranged side-by-side at predetermined intervals on the first surface 21 of the base portion 20. Furthermore, the plurality of heat sinks 10, 10, 10... are arranged side-by-side at approximately equal intervals along the second direction L2. Additionally, the plurality of heat sinks 10, 10, 10... are arranged side-by-side along the first direction L1.

[0201] like Figure 24As shown, in the heat sink 83, each heat sink 10 is configured to extend upwards in the direction outwards from the base portion 20 (e.g., extending upwards in the downward direction of gravity). Specifically, in Figure 24 In the middle, the heat sink 10 disposed on the left side of the base portion 20 is arranged such that it moves outward from the base portion 20 ( Figure 24 The heat sink 10, located on the right side of the base 20, extends upwards in the direction to the left of the base 20 (e.g., upwards in the direction of gravity). Additionally, the heat sink 10 is positioned such that it extends outwards from the base 20 (in the direction to the left of the base 20). Figure 24 (to the right) and extend upwards in the figure (e.g., upwards from the downward direction of gravity).

[0202] The angle of the heat sink 10 relative to the extension direction of the first direction L1 of the base portion 20 is not particularly limited, for example, it can be in the range of 40° to 70°.

[0203] In the radiator 83, for example, when cooling air is supplied from the downward direction of gravity along the second direction L2, it flows on the first surface 21 of the base portion 20 in the outward direction of the first direction L1 of the base portion 20.

[0204] Thus, in the radiator of this utility model, in order to adjust the flow direction of the cooling air on the first surface 21 of the base portion 20, the extension direction of the heat sink 10 erected on the first surface 21 can be appropriately selected.

[0205] Next, the radiator of the fourteenth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the fourteenth embodiment are common to those of the radiators of the first to thirteenth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to thirteenth embodiments. Furthermore, Figure 25 This is an explanatory diagram illustrating the arrangement of the heat sink fins in the fourteenth embodiment of the present invention, viewed from above. Additionally, in Figure 25 In order to simplify the explanation of the heat sink configuration, the description of the heat conduction components is omitted.

[0206] In the radiator 83 of the thirteenth embodiment, each heat sink 10 is configured to extend upward in the figure in the direction outward from the base portion 20 (for example, extending upward in the downward direction of gravity), but instead, as Figure 25As shown, in the radiator 84 of the fourteenth embodiment of the present invention, each heat sink 10 is configured to extend downward in the direction outward from the base portion 20 (for example, extending downward in the direction upward in the direction of gravity). According to the above, in the radiator 84, similarly to the radiator 83 of the thirteenth embodiment, each heat sink 10 extends in a direction inclined relative to the second direction L2 of the base portion 20 and in a direction inclined relative to the first direction L1.

[0207] Specifically, in Figure 25 In the middle, the heat sink 10 disposed on the left side of the base portion 20 is arranged such that it moves outward from the base portion 20 ( Figure 25 The heat sink 10, located on the right side of the base 20, extends downwards in the direction to the left of the base 20 (e.g., downwards from the upper direction of gravity). Additionally, the heat sink 10 is positioned such that it extends outwards from the base 20 (in the direction to the left of gravity). Figure 25 (to the right) and extends downwards in the figure (e.g., downwards from the direction of gravity).

[0208] The angle of the heat sink 10 relative to the extension direction of the first direction L1 of the base portion 20 is not particularly limited, for example, it can be in the range of 40° to 70°.

[0209] In the radiator 84, for example, when cooling air is supplied from the lower direction of gravity along the second direction L2, it flows inward on the first surface 21 of the base portion 20 in the first direction L1 of the base portion 20.

[0210] Next, the radiator of the fifteenth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the fifteenth embodiment are common to those of the radiators of the first to fourteenth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to fourteenth embodiments. Furthermore, Figure 26 This is an explanatory diagram illustrating the arrangement of the heat sink fins in the fifteenth embodiment of the present invention, viewed from above. Additionally, in Figure 26 In order to simplify the explanation of the heat sink configuration, the description of the heat conduction components is omitted.

[0211] In the first embodiment, in the radiator 1, each heat sink 10 extends in a direction substantially parallel to the second direction L2 of the base portion 20 and substantially orthogonal to the first direction L1, but instead, as Figure 26As shown, in the heat sink 85 of the fifteenth embodiment, there are inclined heat sink 10 extending in a direction inclined relative to the second direction L2 of the base portion 20 and parallel heat sink 10 extending in a direction substantially parallel to the second direction L2 of the base portion 20. Furthermore, the heat sink 85 includes a composite heat sink 10, which has a parallel portion extending in a direction substantially parallel to the second direction L2 of the base portion 20 and an inclined portion extending in a direction inclined relative to the second direction L2 of the base portion 20.

[0212] In radiator 85, Figure 26 In this configuration, the heat sink 10 disposed on the upper side (e.g., above the direction of gravity) of the base portion 20 is a parallel heat sink 10, while the heat sink 10 disposed on the lower side (e.g., below the direction of gravity) of the base portion 20 is an inclined heat sink 10. Furthermore, the parallel portions of the composite heat sink 10 are located on the upper side (e.g., above the direction of gravity) of the base portion 20, and the inclined portions are located on the lower side (e.g., below the direction of gravity) of the base portion 20. A plurality of parallel heat sinks 10, 10, 10… and a plurality of composite heat sinks 10, 10, 10… are arranged side-by-side at predetermined intervals. Similarly, a plurality of inclined heat sinks 10, 10, 10… and a plurality of composite heat sinks 10, 10, 10… are arranged side-by-side at predetermined intervals.

[0213] In the radiator 85, the inclined heat sink 10 and the inclined portion of the composite heat sink 10, which are located on the left side of the base portion 20, are arranged such that they move outward from the base portion 20. Figure 26 The inclined portion of the inclined heat sink 10 and the composite heat sink 10, located on the right side of the base portion 20, extends downwards in the direction to the left of the base portion 20 (e.g., downwards from the upper direction of gravity). Furthermore, the inclined portions of the inclined heat sink 10 and the composite heat sink 10, located on the right side of the base portion 20, are arranged such that they extend outwards from the base portion 20 (in the direction to the left of gravity). Figure 26 (to the right) and extends downwards in the figure (e.g., downwards from the direction of gravity).

[0214] The angle between the inclined portion of the inclined heat sink 10 and the inclined portion of the composite heat sink 10 and the extension direction of the first direction L1 of the base portion 20 is not particularly limited, for example, a range of 40° to 70° can be given.

[0215] In the radiator 85, for example, when cooling air is supplied from the lower direction of gravity along the second direction L2, it flows inward in the first direction L1 on the first surface 21 of the base portion 20 on the lower side (lower in the direction of gravity) of the base portion 20, and flows along the second direction L2 on the upper side (above in the direction of gravity) of the base portion 20 on the first surface 21 of the base portion 20.

[0216] In radiators 83, 84, and 85, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in radiators 83, 84, and 85, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in radiators 83, 84, and 85, at least a portion of a heat-conducting member (not shown) is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the freedom of arrangement of the heat-conducting member is excellent, and the thermal connection of the heat-conducting member in radiators 83, 84, and 85 is also excellent. Therefore, in radiators 83, 84, and 85, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of radiators 83, 84, and 85, heat is diffused throughout the base portion 20 via heat conduction members, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in radiators 83, 84, and 85, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in radiators 83, 84, and 85, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0217] Next, the radiator of the sixteenth embodiment of the present invention will be described using the accompanying drawings. The main structural components of the radiator of the sixteenth embodiment are common to those of the radiators of the first to fifteenth embodiments; therefore, the same reference numerals will be used to describe the structural components identical to those of the radiators of the first to fifteenth embodiments. Furthermore, Figure 27 This is a side sectional view of the radiator according to the sixteenth embodiment of this utility model.

[0218] In the first embodiment, the heat conduction member 31 is entirely embedded in the heat sink 1, and is thermally connected to the heat-generating element 100 via the base portion 20. Alternatively, as... Figure 27 As shown, in the radiator 86 of the sixteenth embodiment, the heat conduction member 31 is thermally connected to the heating element 100 via a block member 95 separate from the base portion 20. In the radiator 86, the block member 95 is connected to the portion of the heat conduction member 31 facing the heating element 100, thereby thermally connecting the block member 95 to the heating element 100. According to the above, in the radiator 86, heat from the heating element 100 is transferred from the heating element 100 to the block member 95, and heat transferred from the heating element 100 to the block member 95 is transferred from the block member 95 to the heat conduction member 31.

[0219] In the radiator 86, the portion of the heat conduction member 31 without the connected block member 95 is also embedded in the radiator 86 by inlay casting. Therefore, the entire outer peripheral surface of the heat conduction member 31 is embedded in the radiator 86 by inlay casting for the portion of the heat conduction member 31 without the connected block member 95. Furthermore, by connecting the block member 95 to the portion of the heat conduction member 31 facing the heat-generating element 100, the heat conduction member 31 is entirely embedded in the radiator 86. The block member 95 is thermally connected to the heat conduction member 31 by fitting into the recess 96 provided on the second surface 22 of the base portion 20. Alternatively, the block member 95 may be joined to the heat conduction member 31 as needed. Examples of joining methods include brazing and soldering.

[0220] The portion of the block member 95 facing the heating element 100 is located on the same plane as the second surface 22 of the base portion 20. Therefore, the portion of the block member 95 facing the heating element 100, i.e., the protruding portion 97 from the base portion 20, is a planar portion located on the same plane as the second surface 22. The protruding portion 97 of the block member 95 contacts the heating element 100, and the block member 95 is thermally connected to the heating element 100. Furthermore, the block member 95 may also have a protrusion that protrudes from the second surface 22 of the base portion 20 along the thickness direction of the base portion 20. That is, the portion of the block member 95 facing the heating element 100 may also protrude from the second surface 22 of the base portion 20, and the protrusion of the block member 95 contacts the heating element 100, thus thermally connecting the block member 95 to the heating element 100.

[0221] As the block component 95, a solid component with thermal conductivity can be cited as an example. Furthermore, the material of the block component 95 can be, for example, metals such as copper or copper alloys. In the radiator 86, as in the above embodiments, a heat pipe 30 can be cited as the heat-conducting component 31.

[0222] In the radiator 86, the base portion 20 and the heat sink 10 are integrally formed, thus suppressing the contact resistance between the base portion 20 and the heat sink 10 and improving the thermal connection between them. Therefore, in the radiator 86, even if multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 86, heat transfer from the base portion 20 to the heat sink 10 is smooth. Furthermore, in the radiator 86, at least a portion of the heat conduction member 31 is embedded, so even if a shielding portion is formed on the second surface 22 of the base portion 20, the flexibility in the arrangement of the heat conduction member 31 is excellent, and the thermal connection of the heat conduction member 31 in the radiator 86 is also excellent. Therefore, in the radiator 86, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected to the base portion 20 of the radiator 86, heat is diffused throughout the base portion 20 via the heat conduction member 31, resulting in uniform heating of the entire base portion 20. Consequently, heat transfer from the base portion 20 is equalized throughout the heat sink 10. Thus, in the radiator 86, the heat load throughout the heat sink 10 is uniformized, improving the heat sink efficiency of the heat sink 10. Based on the above, in the radiator 86, even when multiple heat-generating elements 100 with varying heat outputs are thermally connected, the heat dissipation characteristics are improved.

[0223] Next, other embodiments of the radiator of this utility model will be described. In the radiators of the above embodiments, heat pipes or heat exchange plates are used as heat conduction components, but any component with thermal conductivity is acceptable and there is no particular limitation. Instead of heat exchange components, solid metal (e.g., copper) rod-shaped or plate-shaped components, or solid graphite rod-shaped or plate-shaped components, can also be used. In addition, in the radiators of the above embodiments, the heat pipes are embedded in the block portion, but instead, the heat pipes can also be embedded entirely in the base portion.

[0224] For example, such as Figure 28 As shown, a radiator 87 can also be used where the heat pipe 30 is entirely embedded in the base portion 20 without a block portion. In the radiator 87, the diameter of the heat pipe 30 is smaller than the thickness of the base portion 20. Additionally, as... Figure 29As shown, a heat sink 88 can also be used as follows: a protrusion, i.e., a block portion 60, protruding from the second surface 22 of the base portion 20 in the thickness direction of the base portion 20 is provided on the second surface 22 and in a recess 90 formed in the second surface 22. The block portion 60 provided in the recess 90 does not protrude from the second surface 22. In the heat sink 88, the heat pipe 30 is also embedded in the block portion 60. The recess 90 is the area where the thickness of the base portion 20 decreases. The block portion 60 provided in the area other than the recess 90, i.e., on the second surface 22, protrudes in the thickness direction of the base portion 20 more than the block portion 60 provided in the recess 90. Therefore, even if a plurality of heat-generating elements 100 with different heights are the objects to be cooled by the heat sink 88, excellent thermal connectivity is provided for the plurality of heat-generating elements 100.

[0225] Furthermore, in the radiators of the above embodiments, the base portion has a quadrilateral shape when viewed from above (from a position facing the heat sink). The shape of the base portion can be appropriately selected according to the usage conditions of the radiator, and may also have a curved portion or a cut-out portion when viewed from above. Additionally, in the radiators of the above embodiments, the heat sink extends in a generally straight line from one end to the other in the second direction of the base portion, but the shape of the base portion in the second direction is not particularly limited; instead, it may also have a curved portion.

[0226] In addition, in the heat sink of the first embodiment, the vertical dimension of the sealed injection tube is smaller than the thickness of the base portion, but instead, it can be set to be larger than the thickness of the base portion, and the top end of the sealed injection tube protrudes from the second surface of the base portion.

[0227] Industrial availability

[0228] The heat sink of this invention has excellent thermal connection between the base and the heat sink, and excellent freedom in the configuration of the heat conduction components. This prevents rainwater and dust from entering between the base and the heat sink, and provides excellent durability. Therefore, it is particularly valuable in the field of cooling the heat-generating components of communication equipment installed outdoors, such as mobile phone base stations.

[0229] Explanation of reference numerals in the attached figures

[0230] 1, 2, 3, 4, 5, 6, 7, 8, 9: Radiators

[0231] 80, 81, 82, 83, 84, 85, 86, 87, 88: Radiators

[0232] 10: Heat sink

[0233] 20: Base section

[0234] 21: First Page

[0235] 22: Second page

[0236] 30, 70: Heat pipe

[0237] 50: Heat Spreader

Claims

1. A radiator, wherein, have: The base portion has a first surface and a second surface facing the first surface, and a heating element is thermally connected to the second surface; as well as Heat sinks are erected on the first surface of the base. The base and the heat sink are integrally formed. At least a portion of a heat-conducting component is embedded in the radiator. The device has a block portion extending along the extension direction of the base portion, and at least a portion of the heat-conducting member is embedded in the block portion. The block portion is a protrusion on the first surface that protrudes from the first surface of the base portion in the thickness direction of the base portion. A heat sink, which is lower than the heat sink that is erected on the first surface outside the block, is provided on the block. The height of the heat sink erected on the block is the same as the height of the heat sink erected on the first surface outside the block.

2. The radiator according to claim 1, wherein, The heat conduction component has a heated portion that is thermally connected to the heating element.

3. The radiator according to claim 1, wherein, The heat conduction component is entirely embedded in the radiator.

4. The radiator according to claim 1, wherein, At least a portion of the heat-conducting member has an exposed portion that protrudes from the second surface of the base portion and is in direct contact with the heating element.

5. The radiator according to claim 1, wherein, The heat-conducting component extends along the extension direction of the base portion.

6. The radiator according to claim 1, wherein, The heat conduction component is a heat pipe or a heat spreader.

7. The radiator according to claim 1, wherein, The radiator is a cast component, and the heat conduction component is embedded in the radiator by inlay casting.

8. The radiator according to claim 1, wherein, The shape of the heat-conducting component along its length is such that it has a curved portion when viewed from above.

9. The radiator according to claim 4, wherein, The heat-conducting member has a stepped portion that bends in the thickness direction of the base portion, and the exposed portion is formed by the stepped portion.

10. The radiator according to claim 4, wherein, The heat-conducting member has a protrusion that protrudes in the thickness direction of the base portion, and the protrusion forms the exposed portion.

11. The radiator according to claim 6, wherein, A sealed injection pipe, used to inject working fluid into the heat pipe or the vapor chamber, is positioned further inward than the periphery of the radiator.

12. The radiator according to claim 6, wherein, The heat pipe is a flat heat pipe that has been processed into a flat shape.

13. A radiator, wherein, have: The base portion has a first surface and a second surface facing the first surface, and a heating element is thermally connected to the second surface; as well as Heat sinks are erected on the first surface of the base. The base and the heat sink are integrally formed. At least a portion of a heat-conducting component is embedded in the radiator. The heat sink has a top portion in the height direction of the heat sink and an upright starting portion, i.e., a base portion, which rises from the base portion, and the block portion is disposed in the middle portion between the top portion and the base portion of the heat sink.

14. The radiator according to claim 13, wherein, The heat conduction component has a heated portion that is thermally connected to the heating element.

15. The radiator according to claim 13, wherein, The heat conduction component is entirely embedded in the radiator.

16. The radiator according to claim 13, wherein, The heat-conducting component extends along the extension direction of the base portion.

17. The radiator according to claim 13, wherein, The heat conduction component is a heat pipe or a heat spreader.

18. The radiator according to claim 13, wherein, The radiator is a cast component, and the heat conduction component is embedded in the radiator by inlay casting.

19. The radiator according to claim 17, wherein, A sealed injection pipe, used to inject working fluid into the heat pipe or the vapor chamber, is positioned further inward than the periphery of the radiator.

20. The radiator according to claim 17, wherein, The heat pipe is a flat heat pipe that has been processed into a flat shape.

21. A radiator, wherein, have: The base portion has a first surface and a second surface facing the first surface, and a heating element is thermally connected to the second surface; as well as Heat sinks are erected on the first surface of the base. The base and the heat sink are integrally formed. At least a portion of a heat-conducting component is embedded in the radiator. The base portion has a first direction and a second direction orthogonal to the first direction, and the heat sink extends along a direction inclined relative to the second direction of the base portion and in a direction inclined relative to the first direction.

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