JP2022041300A - Heat conduction member - Google Patents

Heat conduction member Download PDF

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Publication number
JP2022041300A
JP2022041300A JP2020146410A JP2020146410A JP2022041300A JP 2022041300 A JP2022041300 A JP 2022041300A JP 2020146410 A JP2020146410 A JP 2020146410A JP 2020146410 A JP2020146410 A JP 2020146410A JP 2022041300 A JP2022041300 A JP 2022041300A
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Japan
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bent
housing
bent portion
conductive member
heat conductive
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JP2020146410A
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Japanese (ja)
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雅昭 花野
Masaaki Hanano
淳一 石田
Junichi Ishida
敏彦 小関
Toshihiko Koseki
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Nidec Corp
Nidec Chaun Choung Technology Corp
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Nidec Corp
Chaun Choung Technology Corp
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Priority to JP2020146410A priority Critical patent/JP2022041300A/en
Priority to CN202110986653.1A priority patent/CN114111404A/en
Priority to US17/458,619 priority patent/US20220065545A1/en
Publication of JP2022041300A publication Critical patent/JP2022041300A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0283—Means for filling or sealing heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/043—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure forming loops, e.g. capillary pumped loops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D2015/0216—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having particular orientation, e.g. slanted, or being orientation-independent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
    • F28D2021/0029—Heat sinks

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

To provide a heat conduction member capable of securing a space in an inside thereof, even when it is bent.SOLUTION: A heat conduction member 1 includes a housing 2 having a space 2S in an inside thereof, and a working medium 4 provided in the space. The housing has an upper plate 22 located in an upper side in a thickness direction of the housing and covering an upper side of the space, a lower plate 21 located in a lower side of the space to face the upper plate in the thickness direction, and a plurality of pillars 22P located between the upper plate and the lower plate. The housing further has bent parts 231, 232 in which the upper plate and the lower plate are bent in the same direction in the thickness direction. At least a part of the pillar is located above the bent part.SELECTED DRAWING: Figure 1

Description

本開示は、熱伝導部材に関する。 The present disclosure relates to heat conductive members.

従来、発熱体の放熱のために熱伝導部材としてベーパーチャンバーが利用されている。また、厚さを削減して薄型化を図ったベーパーチャンバーが提案されている。ベーパーチャンバー内の空間には、底部に形成された毛細管材と、毛細管材と蓋との間の蒸発空間と、が設けられる。ベーパーチャンバーは、毛細管材及び蓋に接触する複数の支持部を有する（例えば、特許文献１参照）。 Conventionally, a vapor chamber has been used as a heat conductive member for heat dissipation of a heating element. Further, a vapor chamber having a reduced thickness and a thinner thickness has been proposed. The space inside the vapor chamber is provided with a capillary material formed at the bottom and an evaporation space between the capillary material and the lid. The vapor chamber has a plurality of supports that come into contact with the capillary material and the lid (see, for example, Patent Document 1).

特開２０１９－１９４５１５号公報Japanese Unexamined Patent Publication No. 2019-194515

ベーパーチャンバーを設置場所等に応じて折り曲げる場合に、ベーパーチャンバーの厚みが薄くなってしまい、内部において作動液を還流させるための空間を確保できないという課題があった。これにより、ベーパーチャンバーを折り曲げ、所望の３次元的な形状にすることが容易ではなかった。 When the vapor chamber is bent according to the installation location or the like, the thickness of the vapor chamber becomes thin, and there is a problem that a space for recirculating the hydraulic fluid cannot be secured inside. This made it difficult to bend the vapor chamber into the desired three-dimensional shape.

上記の点に鑑み、本開示は、折り曲げても内部に空間を確保することが可能な熱伝導部材を提供することを目的とする。 In view of the above points, it is an object of the present disclosure to provide a heat conductive member capable of securing a space inside even when bent.

本開示の例示的な熱伝導部材は、内部に空間を有する筐体と、前記空間に配置される作動媒体と、を有する熱伝導部材である。前記筐体は、前記筐体の厚み方向の上側に位置し、前記空間の上側を覆う上プレートと、前記上プレートと前記厚み方向に対向して前記空間の下側に位置する下プレートと、前記上プレートと前記下プレートとの間に位置する複数のピラーと、を有する。前記筐体は、さらに前記上プレート及び前記下プレートがともに前記厚み方向の同じ方向に折り曲げられた折り曲げ部を有する。前記ピラーの少なくとも一部は、前記折り曲げ部上に位置する。 An exemplary heat conductive member of the present disclosure is a heat conductive member having a housing having a space inside and an operating medium arranged in the space. The housing is located on the upper side of the housing in the thickness direction and covers the upper side of the space, and the upper plate and the lower plate facing the upper plate in the thickness direction and located on the lower side of the space. It has a plurality of pillars located between the upper plate and the lower plate. The housing further has a bent portion in which both the upper plate and the lower plate are bent in the same direction in the thickness direction. At least a portion of the pillar is located on the bend.

本開示の構成によれば、折り曲げても内部に空間を確保することが可能な熱伝導部材を提供することができる。 According to the configuration of the present disclosure, it is possible to provide a heat conductive member capable of securing a space inside even when bent.

図１は、本開示の一実施形態の熱伝導部材の縦断面図である。FIG. 1 is a vertical sectional view of a heat conductive member according to an embodiment of the present disclosure. 図２は、熱伝導部材の製造工程の一部を示す縦断面図である。FIG. 2 is a vertical sectional view showing a part of a manufacturing process of a heat conductive member. 図３は、熱伝導部材の製造工程の一部を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing a part of the manufacturing process of the heat conductive member. 図４は、熱伝導部材の折り曲げ部を示す部分縦断面図である。FIG. 4 is a partial vertical sectional view showing a bent portion of the heat conductive member. 図５は、熱伝導部材の横断面図である。FIG. 5 is a cross-sectional view of the heat conductive member. 図６は、熱伝導部材の折り曲げ部とピラーの位置関係を示す部分横断面図である。FIG. 6 is a partial cross-sectional view showing the positional relationship between the bent portion of the heat conductive member and the pillar. 図７は、変形例１の熱伝導部材の部分横断面図である。FIG. 7 is a partial cross-sectional view of the heat conductive member of Modification 1. 図８は、変形例２の熱伝導部材の部分横断面図である。FIG. 8 is a partial cross-sectional view of the heat conductive member of Modification 2. 図９は、変形例３の熱伝導部材の縦断面図である。FIG. 9 is a vertical cross-sectional view of the heat conductive member of the modified example 3.

以下、本開示の例示的な実施形態について、図面を参照しながら説明する。なお、本開示の範囲は、以下の実施の形態に限定されず、本開示の技術的思想の範囲内で任意に変更可能である。 Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. The scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present disclosure.

図面には、適宜、３次元直交座標系としてＸＹＺ座標系を示した。Ｘ方向、Ｙ方向、及びＺ方向は、互いに直交する。本書では、後述する熱伝導部材１の発熱体Ｈと対向する一面の法線方向を「上下方向」（Ｚ方向）と称し、当該上下方向と直交する方向を「水平方向」（Ｘ方向及びＹ方向）と称する。熱伝導部材１の、発熱体Ｈと対向する被加熱部１１において、上下方向（Ｚ方向）は、筐体２の「厚み方向」に一致する。発熱体Ｈに対して熱伝導部材１が位置する側を「上側」と称し、熱伝導部材１に対して発熱体Ｈが位置する側を「下側」と称する。これらの方向に基づき、熱伝導部材の各部の形状及び位置関係を説明する。なお、これらの方向の定義は、熱伝導部材の使用時の向き及び位置関係を限定するものではない。 In the drawings, the XYZ coordinate system is shown as a three-dimensional Cartesian coordinate system as appropriate. The X, Y, and Z directions are orthogonal to each other. In this document, the normal direction of one surface of the heat conductive member 1 facing the heating element H, which will be described later, is referred to as "vertical direction" (Z direction), and the direction orthogonal to the vertical direction is referred to as "horizontal direction" (X direction and Y direction). Direction). In the heated portion 11 of the heat conductive member 1 facing the heating element H, the vertical direction (Z direction) coincides with the "thickness direction" of the housing 2. The side on which the heating element 1 is located with respect to the heating element H is referred to as "upper side", and the side on which the heating element H is located with respect to the heating element H is referred to as "lower side". Based on these directions, the shape and positional relationship of each part of the heat conductive member will be described. The definition of these directions does not limit the orientation and positional relationship when the heat conductive member is used.

また、本書では、上下方向に平行な断面を「縦断面」と呼び、上下方向と直交する水平方向に平行な断面を「横断面」と呼ぶ。また、本書で用いる「平行」、「直交」は、厳密な意味で平行、直交を表すものではなく、略平行、略直交を含む。 Further, in this document, a cross section parallel to the vertical direction is referred to as a "vertical cross section", and a cross section parallel to the horizontal direction orthogonal to the vertical direction is referred to as a "horizontal cross section". In addition, "parallel" and "orthogonal" used in this document do not mean parallel and orthogonal in a strict sense, but include substantially parallel and substantially orthogonal.

＜１．熱伝導部材の概略構成＞
図１は、本開示の一実施形態の熱伝導部材１の縦断面図である。熱伝導部材１は、本実施形態において、発熱体Ｈの熱を輸送するいわゆるベーパーチャンバーである。発熱体Ｈは、例えば熱を発する電子部品、またはその電子部品を搭載する基板である。発熱体Ｈは、熱伝導部材１によって熱が輸送されることで冷却される。熱伝導部材１は、例えばスマートフォン、ノート型パーソナルコンピューターなどの、発熱体Ｈを有する電子機器に搭載される。なお、発熱体Ｈの個数は、１個に限定されるわけではなく、複数であっても良い。 <1. Schematic configuration of heat conductive member>
FIG. 1 is a vertical sectional view of the heat conductive member 1 according to the embodiment of the present disclosure. In the present embodiment, the heat conductive member 1 is a so-called vapor chamber that transports the heat of the heating element H. The heating element H is, for example, an electronic component that emits heat, or a substrate on which the electronic component is mounted. The heating element H is cooled by transporting heat by the heat conductive member 1. The heat conductive member 1 is mounted on an electronic device having a heating element H, such as a smartphone or a notebook personal computer. The number of heating elements H is not limited to one, and may be a plurality.

熱伝導部材１は、被加熱部１１と、放熱部１２と、を有する。被加熱部１１は、例えば発熱体Ｈに隣接して位置し、発熱体Ｈが発する熱によって加熱される。放熱部１２は、被加熱部１１において発熱体Ｈから受けた熱を外部に放出する。さらに、熱伝導部材１は、本実施形態において、筐体２と、ウィック構造体３と、作動媒体４と、を有する。 The heat conductive member 1 has a heated portion 11 and a heat radiating portion 12. The heated portion 11 is located adjacent to the heating element H, for example, and is heated by the heat generated by the heating element H. The heat radiating unit 12 releases the heat received from the heating element H in the heated unit 11 to the outside. Further, the heat conductive member 1 has, in the present embodiment, a housing 2, a wick structure 3, and an actuating medium 4.

筐体２は、例えば銅などの金属により形成され、内部に空間２Ｓを有する、上下方向から見て長方形状の箱体である。筐体２の一部は、被加熱部１１に含まれる。筐体２の他の一部は、放熱部１２に含まれる。空間２Ｓは、密閉空間であり、例えば大気圧よりも気圧が低い減圧状態に維持される。空間２Ｓが減圧状態であることにより、空間２Ｓに収容される作動媒体４は蒸発し易くなる。 The housing 2 is a rectangular box body viewed from the vertical direction, which is formed of a metal such as copper and has a space 2S inside. A part of the housing 2 is included in the heated portion 11. The other part of the housing 2 is included in the heat radiating unit 12. The space 2S is a closed space, and is maintained in a decompressed state where the atmospheric pressure is lower than the atmospheric pressure, for example. When the space 2S is in a decompressed state, the working medium 4 housed in the space 2S is likely to evaporate.

ウィック構造体３は、筐体２の空間２Ｓに配置される。ウィック構造体３は、空間２Ｓの、被加熱部１１に含まれる領域から放熱部１２に含まれる領域にわたって連続して延びる。ウィック構造体３は、例えば金属製の網状部材（金属メッシュ）で構成され、毛細管現象によって作動媒体４を輸送する。 The wick structure 3 is arranged in the space 2S of the housing 2. The wick structure 3 continuously extends from the region included in the heated portion 11 to the region included in the heat radiating portion 12 in the space 2S. The wick structure 3 is composed of, for example, a metal mesh member (metal mesh), and transports the working medium 4 by a capillary phenomenon.

なお、ウィック構造体３は、作動媒体４を空間２Ｓ内で輸送できる構造であれば、金属製の網状部材（金属メッシュ）に限定されるわけではない。ウィック構造体３は、例えば多孔質の銅の焼結体で構成される焼結ウィック、溝構造を有するグルーブウィックなどであっても良い。 The wick structure 3 is not limited to a metal mesh member (metal mesh) as long as the working medium 4 can be transported in the space 2S. The wick structure 3 may be, for example, a sintered wick composed of a porous copper sintered body, a groove wick having a groove structure, or the like.

作動媒体４は、筐体２の空間２Ｓに収容される。作動媒体４は、例えば水であるが、アルコールなどの他の液体であっても良い。作動媒体４は、ウィック構造体３内を含む空間２Ｓ内を移動することで、熱を輸送する。 The working medium 4 is housed in the space 2S of the housing 2. The working medium 4 is, for example, water, but may be another liquid such as alcohol. The working medium 4 transports heat by moving in the space 2S including the inside of the wick structure 3.

このように、本実施形態の熱伝導部材１は、内部に空間２Ｓを有する筐体２と、空間２Ｓに配置される作動媒体４と、を有する。 As described above, the heat conductive member 1 of the present embodiment has a housing 2 having a space 2S inside and an operating medium 4 arranged in the space 2S.

筐体２は、下プレート２１と、上プレート２２と、を有する。さらに、筐体２は、複数のピラー２２Ｐを有する。 The housing 2 has a lower plate 21 and an upper plate 22. Further, the housing 2 has a plurality of pillars 22P.

下プレート２１は、筐体２の下部に位置する。下プレート２１は、上プレート２２と筐体２の厚み方向に対向して空間２Ｓの下側に位置する。下プレート２１は、金属板であり、例えば銅板である。下プレート２１は、例えばステンレス鋼などの銅以外の金属板の表面に銅メッキを施して形成しても良い。 The lower plate 21 is located at the lower part of the housing 2. The lower plate 21 is located below the space 2S so as to face the upper plate 22 in the thickness direction of the housing 2. The lower plate 21 is a metal plate, for example, a copper plate. The lower plate 21 may be formed by plating the surface of a metal plate other than copper, such as stainless steel, with copper plating.

下プレート２１は、凹部２１Ｄを有する。凹部２１Ｄは、下プレート２１の水平方向の外縁部に対して内側が下側に窪んだ凹形状で形成されている。ウィック構造体３は、凹部２１Ｄに配置される。すなわち、下プレート２１は、ウィック構造体３を下側から支持する。 The lower plate 21 has a recess 21D. The concave portion 21D is formed in a concave shape whose inside is recessed downward with respect to the horizontal outer edge portion of the lower plate 21. The wick structure 3 is arranged in the recess 21D. That is, the lower plate 21 supports the wick structure 3 from below.

上プレート２２は、筐体２の上部に位置する。上プレート２２は、下プレート２１と同じ金属板で構成される。すなわち、上プレート２２は、例えば銅板である。上プレート２２は、例えばステンレス鋼などの銅以外の金属板の表面に銅メッキを施して形成しても良い。なお、上プレート２２と、下プレート２１とは、異なる金属で構成しても良い。 The upper plate 22 is located above the housing 2. The upper plate 22 is made of the same metal plate as the lower plate 21. That is, the upper plate 22 is, for example, a copper plate. The upper plate 22 may be formed by plating the surface of a metal plate other than copper, such as stainless steel, with copper. The upper plate 22 and the lower plate 21 may be made of different metals.

上プレート２２は、下プレート２１に対して上側に位置し、筐体２の厚み方向において下プレート２１と対向する。上プレート２２は、筐体２の厚み方向の上側に位置し、空間２Ｓの上側を覆う。すなわち、上プレート２２は、空間２Ｓ内のウィック構造体３の上側を覆う。 The upper plate 22 is located above the lower plate 21 and faces the lower plate 21 in the thickness direction of the housing 2. The upper plate 22 is located on the upper side of the housing 2 in the thickness direction and covers the upper side of the space 2S. That is, the upper plate 22 covers the upper side of the wick structure 3 in the space 2S.

上プレート２２は、複数のピラー２２Ｐと一体に形成される。複数のピラー２２Ｐは、上プレート２２の下面から下側に延びてウィック構造体３に接触する。すなわち、複数のピラー２２Ｐは、上プレート２２と下プレート２１との間に位置する。ピラー２２Ｐは、上プレート２２と同一部材で形成しても良いし、上プレート２２と別部材で形成しても良い。ピラー２２Ｐは、ウィック構造体３を空間２Ｓ内の下部に保持するための支柱であり、さらに筐体２の厚みを一定にすることができる。 The upper plate 22 is integrally formed with a plurality of pillars 22P. The plurality of pillars 22P extend downward from the lower surface of the upper plate 22 and come into contact with the wick structure 3. That is, the plurality of pillars 22P are located between the upper plate 22 and the lower plate 21. The pillar 22P may be formed of the same member as the upper plate 22 or may be formed of a separate member from the upper plate 22. The pillar 22P is a support column for holding the wick structure 3 in the lower portion in the space 2S, and the thickness of the housing 2 can be made constant.

なお、ピラーは、下プレート２１に形成しても良い。この場合、ピラーは、下プレート２１の凹部２１内の底面から上側に延びる。すなわち、ウィック構造体３は、空間２Ｓ内の上側に配置される。 The pillar may be formed on the lower plate 21. In this case, the pillar extends upward from the bottom surface in the recess 21 of the lower plate 21. That is, the wick structure 3 is arranged on the upper side in the space 2S.

筐体２は、接合部２Ｂをさらに有する。接合部２Ｂは、下プレート２１と上プレート２２とをそれぞれの外縁でつなぎ合わせる接合構造である。接合部２Ｂは、上下方向から見て空間２Ｓの周囲に位置し、下プレート２１と上プレート２２とを接合する。下プレート２１と上プレート２２との接合方法は、特に限定されない。接合部２Ｂは、例えば熱と圧力を加えて接合する方法、ろう材を用いて接合する方法、などの様々な接合方法が用いられても良い。 The housing 2 further has a joint portion 2B. The joint portion 2B has a joint structure in which the lower plate 21 and the upper plate 22 are connected at their respective outer edges. The joint portion 2B is located around the space 2S when viewed from the vertical direction, and joins the lower plate 21 and the upper plate 22. The method of joining the lower plate 21 and the upper plate 22 is not particularly limited. As the joining portion 2B, various joining methods such as a method of joining by applying heat and pressure, a method of joining using a brazing material, and the like may be used.

接合部２Ｂは、封止部を含んでいても良い。封止部は、例えば熱伝導部材１の製造過程において、作動媒体４を筐体２内に注入するための注入口を溶接によって封止した箇所である。 The joint portion 2B may include a sealing portion. The sealing portion is, for example, a portion where an injection port for injecting the working medium 4 into the housing 2 is sealed by welding in the manufacturing process of the heat conductive member 1.

筐体２は、下面に発熱体取付部２Ｍを有する。発熱体取付部２Ｍは、被加熱部１１に位置する。発熱体取付部２Ｍは、発熱体Ｈの数に合わせて、例えば１つ設けられる。発熱体取付部２Ｍは、上下方向から見てウィック構造体３と重なる。 The housing 2 has a heating element mounting portion 2M on the lower surface. The heating element mounting portion 2M is located at the heated portion 11. One heating element mounting portion 2M is provided, for example, according to the number of heating element H. The heating element mounting portion 2M overlaps with the wick structure 3 when viewed from the vertical direction.

図１には、作動媒体４が気化して生成される蒸気の流れを、筐体２内の黒矢印で示した。また、図１には、液状の作動媒体４の流れを、筐体２内の白抜き矢印で示した。 In FIG. 1, the flow of steam generated by vaporizing the working medium 4 is indicated by a black arrow in the housing 2. Further, in FIG. 1, the flow of the liquid working medium 4 is shown by a white arrow in the housing 2.

発熱体Ｈの熱は、被加熱部１１において下プレート２１を介してウィック構造体３に伝達される。ウィック構造体３が温度上昇すると、ウィック構造体３に含まれた液状の作動媒体４が気化し、蒸気が生成される。作動媒体４の蒸気は、空間２Ｓ内を放熱部１２側に移動する。作動媒体４の蒸気は、放熱部１２において放熱によって冷却され、液化する。 The heat of the heating element H is transferred to the wick structure 3 via the lower plate 21 in the heated portion 11. When the temperature of the wick structure 3 rises, the liquid working medium 4 contained in the wick structure 3 is vaporized to generate steam. The steam of the working medium 4 moves in the space 2S toward the heat radiating portion 12. The steam of the working medium 4 is cooled by heat dissipation in the heat radiating unit 12 and liquefied.

液化した作動媒体４は、筐体２の内面を伝って、毛細管現象によってウィック構造体３中を移動することで、被加熱部１１に向かって流れる。このように作動媒体４が状態変化を伴いながら移動することにより、熱伝導部材１では、被加熱部１１側から放熱部１２側への熱の輸送が連続的に行われる。これにより、被加熱部１１に接触する発熱体Ｈは、熱伝導部材１によって冷却される。 The liquefied working medium 4 travels along the inner surface of the housing 2 and moves in the wick structure 3 by a capillary phenomenon, so that it flows toward the heated portion 11. As the working medium 4 moves while changing its state in this way, the heat conductive member 1 continuously transfers heat from the heated portion 11 side to the heat radiating portion 12 side. As a result, the heating element H that comes into contact with the heated portion 11 is cooled by the heat conductive member 1.

＜２．熱伝導部材の詳細構成＞
＜２－１．筐体の詳細構成＞
筐体２は、さらに折り曲げ部２３を有する。折り曲げ部２３は、本実施形態において、第１折り曲げ部２３１と、第２折り曲げ部２３２と、を含む。第１折り曲げ部２３１及び第２折り曲げ部２３２は、熱伝導部材１の被加熱部１１側の端部から放熱部１２側の端部に向かって平行に並置される。 <2. Detailed configuration of heat conductive member>
<2-1. Detailed configuration of the housing>
The housing 2 further has a bent portion 23. In the present embodiment, the bent portion 23 includes a first bent portion 231 and a second bent portion 232. The first bent portion 231 and the second bent portion 232 are juxtaposed in parallel from the end portion of the heat conductive member 1 on the heated portion 11 side toward the end portion on the heat radiating portion 12 side.

第１折り曲げ部２３１及び第２折り曲げ部２３２は、本実施形態において、筐体２の水平方向（図１のＹ方向）に沿って延びる。言い換えれば、第１折り曲げ部２３１及び第２折り曲げ部２３２は、上下方向から見て長方形状である筐体２の、被加熱部１１及び放熱部１２が並ぶ方向に対向する辺と平行な方向（図１及び図５のＹ方向）に延びる。すなわち、図１のＹ方向は、第１折り曲げ部２３１及び第２折り曲げ部２３２の延伸方向であって、第１折り曲げ部２３１及び第２折り曲げ部２３２の稜線２３Ｒが延びる方向である（図５参照）。第１折り曲げ部２３１及び第２折り曲げ部２３２において、上プレート２２及び下プレート２１は、ともに筐体２の厚み方向の同じ方向に折り曲げられている。 The first bent portion 231 and the second bent portion 232 extend along the horizontal direction (Y direction in FIG. 1) of the housing 2 in the present embodiment. In other words, the first bent portion 231 and the second bent portion 232 are in a direction parallel to the side of the housing 2, which is rectangular when viewed from the vertical direction, facing the side in which the heated portion 11 and the heat radiating portion 12 are lined up. Extends in the Y direction of FIGS. 1 and 5). That is, the Y direction in FIG. 1 is the extending direction of the first bent portion 231 and the second bent portion 232, and is the direction in which the ridge line 23R of the first bent portion 231 and the second bent portion 232 extends (see FIG. 5). ). In the first bent portion 231 and the second bent portion 232, both the upper plate 22 and the lower plate 21 are bent in the same direction in the thickness direction of the housing 2.

なお、折り曲げ部２３は、図１に示すように、Ｙ方向から見て、弧状に湾曲するように折れ曲がった形態に限定されるわけではない。折り曲げ部２３は、Ｙ方向に沿って直線状をなして折れ曲がった形態であっても良い。 As shown in FIG. 1, the bent portion 23 is not limited to a bent form so as to be curved in an arc shape when viewed from the Y direction. The bent portion 23 may be bent in a straight line along the Y direction.

筐体２は、さらに第１水平部２４と、第２水平部２５と、傾斜部２６と、を有する。第１水平部２４と、第２水平部２５と、傾斜部２６とは、第１折り曲げ部２３１と、第２折り曲げ部２３２とによって区分される。熱伝導部材１は、被加熱部１１側の端部から放熱部１２側の端部に向かって、第１水平部２４、傾斜部２６、第２水平部２５の順に連続する。被加熱部１１は、第１水平部２４に配置される。第１水平部２４、第２水平部２５、及び傾斜部２６のそれぞれは、下プレート２１及び上プレート２２の一部を含む。 The housing 2 further has a first horizontal portion 24, a second horizontal portion 25, and an inclined portion 26. The first horizontal portion 24, the second horizontal portion 25, and the inclined portion 26 are separated by a first bent portion 231 and a second bent portion 232. The heat conductive member 1 is continuous in the order of the first horizontal portion 24, the inclined portion 26, and the second horizontal portion 25 from the end portion on the heated portion 11 side to the end portion on the heat radiating portion 12 side. The heated portion 11 is arranged in the first horizontal portion 24. Each of the first horizontal portion 24, the second horizontal portion 25, and the inclined portion 26 includes a part of the lower plate 21 and the upper plate 22.

第１水平部２４及び第２水平部２５は、水平方向（図１のＸ方向及びＹ方向）に沿って延びる。すなわち、第１水平部２４及び第２水平部２５のそれぞれにおいて、下プレート２１及び上プレート２２は、ともに水平方向に沿って延びる。本実施形態において、第１水平部２４と、第２水平部２５と、は互いに平行に延びる。第１水平部２４と、第２水平部２５は、Ｙ方向から見て所定角度で傾斜していても良い。 The first horizontal portion 24 and the second horizontal portion 25 extend along the horizontal direction (X direction and Y direction in FIG. 1). That is, in each of the first horizontal portion 24 and the second horizontal portion 25, the lower plate 21 and the upper plate 22 both extend along the horizontal direction. In the present embodiment, the first horizontal portion 24 and the second horizontal portion 25 extend in parallel with each other. The first horizontal portion 24 and the second horizontal portion 25 may be inclined at a predetermined angle when viewed from the Y direction.

傾斜部２６は、第１水平部２４に対して所定の角度θ１で上下方向（図１のＺ方向）の上側に向かって傾斜し、第２水平部２５に対して所定の角度θ２で上下方向（図１のＺ方向）の下側に向かって傾斜する。すなわち、傾斜部２６において、下プレート２１及び上プレート２２は、ともに第１水平部２４に対して所定の角度θ１で上下方向の上側に向かって傾斜し、第２水平部２５に対して所定の角度θ２で上下方向の下側に向かって傾斜する。本実施形態において、第１水平部２４と、第２水平部２５とは互いに平行であるので、角度θ１と、角度θ２とはともに同じ角度である。角度θ１及び角度θ２は、適宜任意の角度に定めることができ、互いに異なる角度であっても良い。 The inclined portion 26 is inclined toward the upper side in the vertical direction (Z direction in FIG. 1) at a predetermined angle θ1 with respect to the first horizontal portion 24, and is vertically oriented at a predetermined angle θ2 with respect to the second horizontal portion 25. It tilts toward the lower side (Z direction in FIG. 1). That is, in the inclined portion 26, both the lower plate 21 and the upper plate 22 are inclined toward the upper side in the vertical direction at a predetermined angle θ1 with respect to the first horizontal portion 24, and are predetermined with respect to the second horizontal portion 25. It tilts downward at an angle θ2 in the vertical direction. In the present embodiment, since the first horizontal portion 24 and the second horizontal portion 25 are parallel to each other, the angle θ1 and the angle θ2 are both the same angle. The angle θ1 and the angle θ2 can be appropriately set to any angle, and may be different from each other.

これにより、第２水平部２５は、第１水平部２４よりも上下方向（図１のＺ方向）の上側に位置する。 As a result, the second horizontal portion 25 is located above the first horizontal portion 24 in the vertical direction (Z direction in FIG. 1).

ウィック構造体３は、図１に示すように、折り曲げ部２３の稜線２３Ｒの延伸方向（Ｙ方向）と交差する方向（Ｘ方向）において折り曲げ部２３の両側の領域にわたって位置する。言い換えれば、ウィック構造体３は、熱伝導部材１の被加熱部１１側の領域から放熱部１２側の領域にわたって位置する。この構成によれば、作動媒体４を還流し易くすることが可能になる。 As shown in FIG. 1, the wick structure 3 is located over the regions on both sides of the bent portion 23 in the direction (X direction) intersecting the extending direction (Y direction) of the ridge line 23R of the bent portion 23. In other words, the wick structure 3 is located from the region on the heated portion 11 side of the heat conductive member 1 to the region on the heat radiating portion 12 side. According to this configuration, it becomes possible to facilitate the reflux of the working medium 4.

図２及び図３は、熱伝導部材１の製造工程の一部を示す縦断面図である。熱伝導部材１は、以下に示す方法で製造することができる。なお、熱伝導部材１の製造方法は、以下に示す方法に限定されるわけではなく、他の方法であっても良い。 2 and 3 are vertical cross-sectional views showing a part of the manufacturing process of the heat conductive member 1. The heat conductive member 1 can be manufactured by the method shown below. The method for manufacturing the heat conductive member 1 is not limited to the method shown below, and may be another method.

まず、水平方向の内側に下側に窪んだ凹部２１Ｄが形成された下プレート２１と、水平方向の内側に下側に延びる複数のピラー２２Ｐが形成された上プレート２２と、ウィック構造体３と、を製造する。次に、凹部２１Ｄにウィック構造体３を配置した下プレート２１と、上プレート２２と、を接合部２Ｂで接合することで、平板状であって、折り曲げ部が形成されていない状態の筐体２（図２参照）を形成する。 First, the lower plate 21 in which the recess 21D recessed downward in the horizontal direction is formed, the upper plate 22 in which a plurality of pillars 22P extending downward in the horizontal direction are formed, and the wick structure 3 , To manufacture. Next, by joining the lower plate 21 in which the wick structure 3 is arranged in the recess 21D and the upper plate 22 at the joint portion 2B, the housing is flat and has no bent portion. 2 (see FIG. 2) is formed.

次に、図２に示すように、筐体２の水平方向（Ｘ方向）の一端部側を治具１０１で挟み、拘束する。次に、筐体２の水平方向（Ｘ方向）の他端部側を、例えば上下方向（Ｚ方向）の上側に向かって押すことで折り曲げ、筐体２に１つめの折り曲げ部２３（例えば第１折り曲げ部２３１）を形成する（図２参照）。 Next, as shown in FIG. 2, one end side of the housing 2 in the horizontal direction (X direction) is sandwiched between jigs 101 and restrained. Next, the other end side of the housing 2 in the horizontal direction (X direction) is bent by pushing it toward the upper side in the vertical direction (Z direction), for example, and the first bent portion 23 (for example, the first) in the housing 2 is bent. 1 Bent portion 231) is formed (see FIG. 2).

次に、図３に示すように、筐体２を持ち替えて、筐体２の水平方向（Ｘ方向）の他端部側を治具１０１で挟み、拘束する。次に、筐体２の水平方向（Ｘ方向）の一端部側を、上下方向（Ｚ方向）の上側に向かって押すことで折り曲げ、筐体２に２つめの折り曲げ部２３（例えば第２折り曲げ部２３２）を形成する。 Next, as shown in FIG. 3, the housing 2 is held and the other end side of the housing 2 in the horizontal direction (X direction) is sandwiched between jigs 101 and restrained. Next, the one end side of the housing 2 in the horizontal direction (X direction) is bent by pushing it toward the upper side in the vertical direction (Z direction), and the second bending portion 23 (for example, the second bending) is bent in the housing 2. Part 232) is formed.

なお、図２、図３では、筐体２の水平方向（Ｘ方向）の一端部側と、他端部側とを持ち替え、個別に治具１０１で挟むこととしたが、筐体２の水平方向（Ｘ方向）の両端部側を同時に治具で挟み、拘束して折り曲げ部２３を形成しても良い。 In FIGS. 2 and 3, one end side and the other end side of the housing 2 in the horizontal direction (X direction) are switched and individually sandwiched between jigs 101, but the housing 2 is horizontal. The bent portions 23 may be formed by sandwiching both end portions in the direction (X direction) with a jig at the same time and restraining them.

＜２－２．折り曲げ部の詳細構成＞
図４は、熱伝導部材１の折り曲げ部２３を示す部分縦断面図である。図５は、熱伝導部材１の横断面図である。なお、図５は、図１のＶ－Ｖ線で切断した熱伝導部材１の横断面図である。図６は、熱伝導部材１の折り曲げ部２３とピラー２２Ｐの位置関係を示す部分横断面図である。 <2-2. Detailed configuration of the bent part>
FIG. 4 is a partial vertical sectional view showing a bent portion 23 of the heat conductive member 1. FIG. 5 is a cross-sectional view of the heat conductive member 1. Note that FIG. 5 is a cross-sectional view of the heat conductive member 1 cut along the VV line of FIG. FIG. 6 is a partial cross-sectional view showing the positional relationship between the bent portion 23 of the heat conductive member 1 and the pillar 22P.

ピラー２２Ｐは、折り曲げ部２３上に位置する。言い換えれば、ピラー２２Ｐは、折り曲げ部２３の、Ｙ方向から見て弧状に湾曲するように折れ曲がった領域に位置する。詳細に言えば、図６に示すように、第１折り曲げ部２３１上のピラー２２Ｐは、第１折り曲げ部２３１の折れ曲がった領域内に含まれる。第２折り曲げ部２３２上のピラー２２Ｐは、第２折り曲げ部２３２の折れ曲がった領域内に、一部が含まれる。すなわち、ピラー２２Ｐの少なくとも一部が、折り曲げ部２３上に位置している。 The pillar 22P is located on the bent portion 23. In other words, the pillar 22P is located in the bent region of the bent portion 23 so as to be curved in an arc shape when viewed from the Y direction. More specifically, as shown in FIG. 6, the pillar 22P on the first bent portion 231 is included in the bent region of the first bent portion 231. The pillar 22P on the second bent portion 232 is partially included in the bent region of the second bent portion 232. That is, at least a part of the pillar 22P is located on the bent portion 23.

折り曲げ部２３を形成することで空間２Ｓが狭くなる虞があるが、上記の構成によれば、折り曲げ部２３上にピラー２２Ｐが位置することで、折り曲げ部２３において空間２Ｓを確保することが可能である。すなわち、折り曲げても内部に空間２Ｓを確保することが可能な熱伝導部材１を提供することができる。これにより、平板状の熱伝導部材１を折り曲げ、所望の３次元的な形状にすることが容易になる。したがって、図１に示すように、被加熱部１１の位置と、放熱部１２の位置とがＺ方向にずれていても、熱伝導部材１は、発熱体Ｈを効果的に冷却することが可能になる。 The space 2S may be narrowed by forming the bent portion 23, but according to the above configuration, it is possible to secure the space 2S in the bent portion 23 by locating the pillar 22P on the bent portion 23. Is. That is, it is possible to provide the heat conductive member 1 that can secure the space 2S inside even when bent. This makes it easy to bend the flat plate-shaped heat conductive member 1 into a desired three-dimensional shape. Therefore, as shown in FIG. 1, even if the position of the heated portion 11 and the position of the heat radiating portion 12 are displaced in the Z direction, the heat conductive member 1 can effectively cool the heating element H. become.

熱伝導部材１は、上記のように、第１折り曲げ部２３１と、第２折り曲げ部２３２と、の複数の折り曲げ部を有する。図５に示すように、複数のピラー２２Ｐが、第１折り曲げ部２３１と、第２折り曲げ部２３２との間に位置する。なお、第１折り曲げ部２３１と、第２折り曲げ部２３２との間に位置するピラー２２Ｐは、１つであっても良い。すなわち、少なくとも１つのピラー２２Ｐが、２つの折り曲げ部２３の間に位置する。すなわち、少なくとも１つのピラー２２Ｐが、筐体２の傾斜部２６に位置する。 As described above, the heat conductive member 1 has a plurality of bent portions, that is, a first bent portion 231 and a second bent portion 232. As shown in FIG. 5, a plurality of pillars 22P are located between the first bent portion 231 and the second bent portion 232. The number of pillars 22P located between the first bent portion 231 and the second bent portion 232 may be one. That is, at least one pillar 22P is located between the two bent portions 23. That is, at least one pillar 22P is located on the inclined portion 26 of the housing 2.

上記の構成によれば、例えば本実施形態では、傾斜部２６において外力に対して変形し難くすることができる。また、折り曲げ部２３を形成することで、傾斜部２６では空間２Ｓが筐体２の厚み方向に狭くなる虞があるが、ピラー２２Ｐが傾斜部２６に位置することで、上記の構成によって空間２Ｓを確保することが可能になる。 According to the above configuration, for example, in the present embodiment, the inclined portion 26 can be made difficult to be deformed by an external force. Further, by forming the bent portion 23, the space 2S may be narrowed in the inclined portion 26 in the thickness direction of the housing 2, but since the pillar 22P is located in the inclined portion 26, the space 2S is configured by the above configuration. It becomes possible to secure.

＜２－３．ピラーの詳細構成＞
ピラー２２Ｐは、図５に示すように、例えば上下方向から見て円形の円柱に形成される。複数のピラー２２Ｐは、筐体２の水平方向（図５のＸ方向及びＹ方向）において２次元的に、規則的な間隔で配列される。すなわち、複数のピラー２２Ｐは、筐体２の被加熱部１１側の端部から放熱部１２側の端部に向かって所定間隔で並置される。 <2-3. Detailed configuration of pillars>
As shown in FIG. 5, the pillar 22P is formed in, for example, a circular cylinder when viewed from the vertical direction. The plurality of pillars 22P are arranged two-dimensionally at regular intervals in the horizontal direction (X direction and Y direction in FIG. 5) of the housing 2. That is, the plurality of pillars 22P are juxtaposed at predetermined intervals from the end portion of the housing 2 on the heated portion 11 side toward the end portion on the heat radiating portion 12 side.

言い換えれば、複数のピラー２２Ｐは、筐体２の外縁の一端部から、対向する他端部まで全域にわたって所定間隔で配置される。詳細に言えば、複数のピラー２２Ｐは、筐体２の外縁の図５のＸ方向左端部から、対向する図５のＸ方向右端部まで全域にわたって所定間隔で配置される。或いは、複数のピラー２２Ｐは、筐体２の外縁の図５のＹ方向下端部から、対向する図５のＹ方向上端部まで全域にわたって所定間隔で配置される。 In other words, the plurality of pillars 22P are arranged at predetermined intervals over the entire area from one end of the outer edge of the housing 2 to the other end facing each other. More specifically, the plurality of pillars 22P are arranged at predetermined intervals over the entire area from the left end portion in the X direction of FIG. 5 on the outer edge of the housing 2 to the right end portion in the X direction of FIG. 5 facing each other. Alternatively, the plurality of pillars 22P are arranged at predetermined intervals over the entire area from the lower end in the Y direction of FIG. 5 on the outer edge of the housing 2 to the upper end in the Y direction of FIG. 5 facing each other.

なお、本実施形態において、複数のピラー２２Ｐは、三角格子状に配列される。複数のピラー２２Ｐは、例えば正方格子状、長方格子状または斜方格子状に配列されることにしても良い。 In this embodiment, the plurality of pillars 22P are arranged in a triangular lattice pattern. The plurality of pillars 22P may be arranged, for example, in a square grid pattern, a rectangular grid pattern, or an orthorhombic grid pattern.

上記の構成によれば、筐体２の水平方向（図５のＸ方向及びＹ方向）の全域にわたって、ピラー２２Ｐを配置することができる。これにより、筐体２全体における空間２Ｓの確保と、筐体２の強度の向上とを実現することが可能になる。 According to the above configuration, the pillars 22P can be arranged over the entire horizontal direction (X direction and Y direction in FIG. 5) of the housing 2. This makes it possible to secure the space 2S in the entire housing 2 and improve the strength of the housing 2.

＜３．変形例＞
続いて、熱伝導部材１の変形例について説明する。なお、変形例の基本的な構成は、図１から図６を用いて説明した上記実施形態と同じであるので、共通する構成要素には前と同じ符号または前と同じ名称を付してその説明を省略する場合がある。 <3. Modification example>
Subsequently, a modification of the heat conductive member 1 will be described. Since the basic configuration of the modified example is the same as that of the above-described embodiment described with reference to FIGS. 1 to 6, the common components are given the same reference numerals or the same names as before. The explanation may be omitted.

＜３－１．変形例１＞
図７は、変形例１の熱伝導部材１の部分横断面図である。変形例１の熱伝導部材１は、図７に示すように、折り曲げ部２３（第１折り曲げ部２３１、第２折り曲げ部２３２）と、複数のピラー２２Ｐと、を有する。複数のピラー２２Ｐは、第１折り曲げ部２３１上、及び第２折り曲げ部２３２上に、それぞれ個別に位置する。 <3-1. Modification 1>
FIG. 7 is a partial cross-sectional view of the heat conductive member 1 of the modified example 1. As shown in FIG. 7, the heat conductive member 1 of the modification 1 has a bent portion 23 (first bent portion 231 and a second bent portion 232) and a plurality of pillars 22P. The plurality of pillars 22P are individually located on the first bent portion 231 and on the second bent portion 232, respectively.

第１折り曲げ部２３１上、及び第２折り曲げ部２３２上に位置するピラー２２Ｐは、例えば上下方向から見て楕円形状である。詳細に言えば、第１折り曲げ部２３１上、及び第２折り曲げ部２３２上に位置するピラー２２Ｐは、折り曲げ部２３の稜線２３Ｒの延伸方向（Ｙ方向）の長さよりも稜線２３Ｒの延伸方向と交差する方向（Ｘ方向）の長さのほうが長い。なお、折り曲げ部２３上に位置するピラー２２Ｐは、楕円形状以外のオーバル形状、長方形状などであっても良い。 The pillars 22P located on the first bent portion 231 and the second bent portion 232 have, for example, an elliptical shape when viewed from the vertical direction. More specifically, the pillars 22P located on the first bent portion 231 and the second bent portion 232 intersect the extending direction of the ridge line 23R rather than the length in the extending direction (Y direction) of the ridge line 23R of the bent portion 23. The length in the direction (X direction) is longer. The pillar 22P located on the bent portion 23 may have an oval shape other than an elliptical shape, a rectangular shape, or the like.

上記の構成によれば、筐体２を折り曲げて折り曲げ部２３を形成するときに、折り曲げ部２３の稜線２３Ｒが、稜線２３Ｒの延伸方向と交差する方向（Ｘ方向）にずれてしまうことを抑制することが可能である。これにより、折り曲げ部２３において空間２Ｓを確保する効果を高めることができる。 According to the above configuration, when the housing 2 is bent to form the bent portion 23, it is possible to prevent the ridge line 23R of the bent portion 23 from being displaced in the direction (X direction) intersecting the extending direction of the ridge line 23R. It is possible to do. As a result, the effect of securing the space 2S in the bent portion 23 can be enhanced.

＜３－２．変形例２＞
図８は、変形例２の熱伝導部材１の部分横断面図である。変形例２の熱伝導部材１は、図８に示すように、折り曲げ部２３（第１折り曲げ部２３１、第２折り曲げ部２３２）と、複数のピラー２２Ｐと、を有する。複数のピラー２２Ｐは、第１折り曲げ部２３１上、及び第２折り曲げ部２３２上に位置する。 <3-2. Modification 2>
FIG. 8 is a partial cross-sectional view of the heat conductive member 1 of the modified example 2. As shown in FIG. 8, the heat conductive member 1 of the modification 2 has a bent portion 23 (first bent portion 231 and a second bent portion 232) and a plurality of pillars 22P. The plurality of pillars 22P are located on the first bent portion 231 and on the second bent portion 232.

折り曲げ部２３上のピラー２２Ｐは、本実施形態において、第１折り曲げ部２３１上から第２折り曲げ部２３２上まで連続して延びている。言い換えれば、折り曲げ部２３の稜線２３Ｒの延伸方向と交差する方向（Ｘ方向）において、ピラー２２Ｐは、筐体２の傾斜部２６の全域にわたって位置する。折り曲げ部２３上のピラー２２Ｐは、例えば上下方向から見て小判形状である。なお、折り曲げ部２３上のピラー２２Ｐは、小判形状以外のオーバル形状、長方形状などであっても良い。 In the present embodiment, the pillar 22P on the bent portion 23 continuously extends from the top of the first bent portion 231 to the top of the second bent portion 232. In other words, the pillar 22P is located over the entire inclined portion 26 of the housing 2 in the direction (X direction) intersecting the extending direction of the ridge line 23R of the bent portion 23. The pillar 22P on the bent portion 23 has, for example, an oval shape when viewed from the vertical direction. The pillar 22P on the bent portion 23 may have an oval shape other than an oval shape, a rectangular shape, or the like.

なお、筐体２が３つ以上の折り曲げ部を有する場合、折り曲げ部上に位置するピラー２２Ｐは、一の折り曲げ部上から他の折り曲げ部上まで連続して延びる。すなわち、３つ以上の折り曲げ部がＸ方向に並ぶ場合に、折り曲げ部上に位置するピラー２２Ｐは、例えばＸ方向に並ぶ折り曲げ部同士の間のいずれか一区間にわたって連続して延びても良いし、すべての区間にわたって連続して延びても良い。 When the housing 2 has three or more bent portions, the pillars 22P located on the bent portions continuously extend from one bent portion to the other bent portions. That is, when three or more bent portions are arranged in the X direction, the pillars 22P located on the bent portions may be continuously extended over any one section between the bent portions arranged in the X direction, for example. , May extend continuously over all sections.

上記の構成によれば、折り曲げ部２３上のピラー２２Ｐは、２つの第１折り曲げ部２３１、第２折り曲げ部２３２の間にも位置する。これにより、例えば本実施形態では、傾斜部２６において外力に対して変形し難くすることができる。したがって、折り曲げ部２３と、２つの第１折り曲げ部２３１、第２折り曲げ部２３２の間（傾斜部２６）と、において空間２Ｓを確保する効果を高めることができる。 According to the above configuration, the pillar 22P on the bent portion 23 is also located between the two first bent portions 231 and the second bent portion 232. Thereby, for example, in the present embodiment, it is possible to make the inclined portion 26 less likely to be deformed by an external force. Therefore, it is possible to enhance the effect of securing the space 2S between the bent portion 23, the two first bent portions 231 and the second bent portion 232 (inclined portion 26).

＜３－３．変形例３＞
図９は、変形例３の熱伝導部材１の縦断面図である。変形例２の熱伝導部材１は、図９に示すように、折り曲げ部２３を有する。単一の折り曲げ部２３が、筐体２に形成されている。 <3-3. Modification 3>
FIG. 9 is a vertical cross-sectional view of the heat conductive member 1 of the modified example 3. As shown in FIG. 9, the heat conductive member 1 of the modification 2 has a bent portion 23. A single bent portion 23 is formed in the housing 2.

筐体２は、さらに水平部２７と、垂直部２８と、を有する。水平部２７と、垂直部２８とは、折り曲げ部２３によって区分される。水平部２７及び垂直部２８は、熱伝導部材１の被加熱部１１側の端部から放熱部１２側の端部に向かって、水平部２７、垂直部２８の順に連続する。被加熱部１１は、水平部２７に配置される。水平部２７及び垂直部２８のそれぞれは、下プレート２１及び上プレート２２の一部を含む。 The housing 2 further has a horizontal portion 27 and a vertical portion 28. The horizontal portion 27 and the vertical portion 28 are separated by a bent portion 23. The horizontal portion 27 and the vertical portion 28 are continuous in the order of the horizontal portion 27 and the vertical portion 28 from the end portion on the heated portion 11 side of the heat conductive member 1 toward the end portion on the heat dissipation portion 12 side. The heated portion 11 is arranged on the horizontal portion 27. Each of the horizontal portion 27 and the vertical portion 28 includes a part of the lower plate 21 and the upper plate 22.

垂直部２８は、水平部２７に対して所定の角度θ３で上下方向（図９のＺ方向）の上側に向かって延びる。本実施形態において、角度θ３は、９０度である。すなわち、筐体２は、水平方向（図９のＹ方向）から見てＬ字形状に形成されている。 The vertical portion 28 extends upward in the vertical direction (Z direction in FIG. 9) at a predetermined angle θ3 with respect to the horizontal portion 27. In this embodiment, the angle θ3 is 90 degrees. That is, the housing 2 is formed in an L shape when viewed from the horizontal direction (Y direction in FIG. 9).

ピラー２２Ｐは、折り曲げ部２３上に位置する。言い換えれば、ピラー２２Ｐは、折り曲げ部２３の、Ｙ方向に沿って直線状をなして折れ曲がった領域に位置する。 The pillar 22P is located on the bent portion 23. In other words, the pillar 22P is located in the bent region of the bent portion 23 in a straight line along the Y direction.

このように、変形例２の熱伝導部材１は、折り曲げ部２３が１箇所であり、水平部２７と垂直部２８とが直交する形状である。ピラー２２Ｐは、折り曲げ部２３上に位置する。これにより、折り曲げ部２３において空間２Ｓを確保することが可能である。すなわち、折り曲げても内部に空間２Ｓを確保することが可能な熱伝導部材１を提供することができる。 As described above, the heat conductive member 1 of the modified example 2 has one bent portion 23, and has a shape in which the horizontal portion 27 and the vertical portion 28 are orthogonal to each other. The pillar 22P is located on the bent portion 23. Thereby, it is possible to secure the space 2S in the bent portion 23. That is, it is possible to provide the heat conductive member 1 that can secure the space 2S inside even when bent.

＜４．その他＞
以上、本開示の実施形態につき説明したが、本開示の範囲はこれに限定されるものではなく、本開示の主旨を逸脱しない範囲で、構成の付加、省略、置換及び他の種々の変更を加えて実施することができる。 <4. Others>
Although the embodiments of the present disclosure have been described above, the scope of the present disclosure is not limited thereto, and additions, omissions, substitutions, and various other changes of the configuration may be made without departing from the gist of the present disclosure. In addition, it can be carried out.

例えば、折り曲げ部２３の数量は、１つ、あるいは２つに限定されるわけではなく、３つ以上設けても良い。また、筐体２の、折り曲げ部２３を挟んで隣り合う領域がなす角度は、上記実施形態で説明した傾斜角、直角に限定されるわけではなく、他の角度であっても良い。また、折り曲げ部２３は、上下方向から見て長方形状である筐体２の、被加熱部１１及び放熱部１２が並ぶ方向に対向する辺と平行な方向（例えば図５のＹ方向）に延びることとしたが、被加熱部１１及び放熱部１２が並ぶ方向に対向する辺に対して傾斜して延びることにしても良い。 For example, the number of the bent portions 23 is not limited to one or two, and three or more may be provided. Further, the angle formed by the regions of the housing 2 adjacent to each other across the bent portion 23 is not limited to the inclination angle and the right angle described in the above embodiment, and may be other angles. Further, the bent portion 23 extends in a direction parallel to the side of the housing 2, which is rectangular when viewed from the vertical direction, facing the side in which the heated portion 11 and the heat radiating portion 12 are lined up (for example, the Y direction in FIG. 5). However, the heated portion 11 and the heat radiating portion 12 may be inclined and extended with respect to the side facing each other in the line-up direction.

また、複数のピラー２２Ｐの数量及び配列は、図に示した構成に限定されるわけではなく、他の数量及び配列であっても良い。また、ピラー２２Ｐは、上下方向から見て円形の断面形状の柱に限定されるわけではなく、例えば楕円形、長方形などの他の断面形状の柱であっても良い。 Further, the quantity and arrangement of the plurality of pillars 22P are not limited to the configuration shown in the figure, and may be other quantities and arrangements. Further, the pillar 22P is not limited to a pillar having a circular cross-sectional shape when viewed from the vertical direction, and may be a pillar having another cross-sectional shape such as an ellipse or a rectangle.

本開示は、例えば電子機器に搭載される基板または電子部品の放熱に利用することができる。 The present disclosure can be used, for example, for heat dissipation of a substrate or an electronic component mounted on an electronic device.

１・・・熱伝導部材、２・・・筐体、２Ｂ・・・接合部、２Ｍ・・・発熱体取付部、２Ｓ・・・空間、３・・・ウィック構造体、４・・・作動媒体、１１・・・被加熱部、１２・・・放熱部、２１・・・下プレート、２１Ｄ・・・凹部、２２・・・上プレート、２２Ｐ・・・ピラー、２３・・・折り曲げ部、２３Ｒ・・・稜線、２４・・・第１水平部、２５・・・第２水平部、２６・・・傾斜部、２７・・・水平部、２８・・・垂直部、１０１・・・治具、２３１・・・第１折り曲げ部、２３２・・・第２折り曲げ部、Ｈ・・・発熱体、Ｌ１・・・距離、Ｌ２・・・距離、θ１・・・角度、θ２・・・角度、θ３・・・角度 1 ... heat conductive member, 2 ... housing, 2B ... joint, 2M ... heating element mounting part, 2S ... space, 3 ... wick structure, 4 ... operation Medium, 11 ... heated part, 12 ... heat dissipation part, 21 ... lower plate, 21D ... recess, 22 ... upper plate, 22P ... pillar, 23 ... bent part, 23R ... Ridge line, 24 ... 1st horizontal part, 25 ... 2nd horizontal part, 26 ... inclined part, 27 ... horizontal part, 28 ... vertical part, 101 ... cure Tool 231 ... 1st bent part, 232 ... 2nd bent part, H ... heating element, L1 ... distance, L2 ... distance, θ1 ... angle, θ2 ... angle , Θ3 ... Angle

Claims (6)

内部に空間を有する筐体と、前記空間に配置される作動媒体と、を有する熱伝導部材であって、
前記筐体は、
前記筐体の厚み方向の上側に位置し、前記空間の上側を覆う上プレートと、
前記上プレートと前記厚み方向に対向して前記空間の下側に位置する下プレートと、
前記上プレートと前記下プレートとの間に位置する複数のピラーと、
を有し、
前記筐体は、さらに前記上プレート及び前記下プレートがともに前記厚み方向の同じ方向に折り曲げられた折り曲げ部を有し、
前記ピラーの少なくとも一部は、前記折り曲げ部上に位置する、熱伝導部材。 A heat conductive member having a housing having a space inside and a working medium arranged in the space.
The housing is
An upper plate located on the upper side in the thickness direction of the housing and covering the upper side of the space,
A lower plate located on the lower side of the space facing the upper plate in the thickness direction, and a lower plate.
A plurality of pillars located between the upper plate and the lower plate,
Have,
The housing further has a bent portion in which both the upper plate and the lower plate are bent in the same direction in the thickness direction.
At least a part of the pillar is a heat conductive member located on the bent portion. 前記折り曲げ部上に位置する前記ピラーは、前記折り曲げ部の稜線の延伸方向の長さよりも前記延伸方向と交差する方向の長さのほうが長い、請求項１に記載の熱伝導部材。 The heat conductive member according to claim 1, wherein the pillar located on the bent portion has a longer length in a direction intersecting the stretching direction than a length in a stretching direction of the ridgeline of the bent portion. 複数の前記折り曲げ部を有し、
前記折り曲げ部上に位置する前記ピラーは、一の前記折り曲げ部上から他の前記折り曲げ部上まで連続して延びる、請求項１または請求項２に記載の熱伝導部材。 It has a plurality of the bent portions and has a plurality of the bent portions.
The heat conductive member according to claim 1 or 2, wherein the pillar located on the bent portion continuously extends from one of the bent portions to the other bent portion. 複数の前記折り曲げ部を有し、
少なくとも１つの前記ピラーは、２つの前記折り曲げ部の間に位置する、請求項１から請求項３のいずれかに記載の熱伝導部材。 It has a plurality of the bent portions and has a plurality of the bent portions.
The heat conductive member according to any one of claims 1 to 3, wherein the at least one pillar is located between the two bent portions. 前記複数のピラーは、前記筐体の外縁の一端部から、対向する他端部まで全域にわたって所定間隔で配置される、請求項１から請求項４のいずれかに記載の熱伝導部材。 The heat conductive member according to any one of claims 1 to 4, wherein the plurality of pillars are arranged at predetermined intervals over the entire area from one end of the outer edge of the housing to the other end facing the housing. 前記空間に配置されるウィック構造体を有し、
前記ウィック構造体は、前記折り曲げ部の稜線の延伸方向と交差する方向において前記折り曲げ部の両側の領域にわたって位置する、請求項１から請求項５のいずれかに記載の熱伝導部材。 It has a wick structure arranged in the space and has a wick structure.
The heat conductive member according to any one of claims 1 to 5, wherein the wick structure is located over a region on both sides of the bent portion in a direction intersecting the extending direction of the ridgeline of the bent portion.
JP2020146410A 2020-08-31 2020-08-31 Heat conduction member Pending JP2022041300A (en)

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