JP2012186378A - Cooling fin structure - Google Patents

Cooling fin structure Download PDF

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Publication number
JP2012186378A
JP2012186378A JP2011049396A JP2011049396A JP2012186378A JP 2012186378 A JP2012186378 A JP 2012186378A JP 2011049396 A JP2011049396 A JP 2011049396A JP 2011049396 A JP2011049396 A JP 2011049396A JP 2012186378 A JP2012186378 A JP 2012186378A
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Prior art keywords
cooling fin
cooling
fin structure
housing
cooling fins
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JP2011049396A
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Japanese (ja)
Inventor
Tsutomu Miyamoto
力 宮本
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Kyocera Corp
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Kyocera Corp
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Priority to JP2011049396A priority Critical patent/JP2012186378A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

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  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a cooling fin structure which suppresses temperature rise due to heat rays from the exterior and improves cooling efficiency.SOLUTION: A cooling fin structure is formed by arranging multiple cooling fins 11 parallel to each other. Bent parts 12, formed in the extension direction of the cooling fins 11, are provided in tips of at least part of the cooling fins 11. The bent parts 12 block heat rays from the exterior such as solar radiation from entering, effectively suppress temperature rise caused by the heat rays from the exterior, and improve the cooling efficiency.

Description

本発明は、冷却フィン構造に関するものである。   The present invention relates to a cooling fin structure.

例えば、気密構造の筐体を有する無線通信システムの基地局においては、図２に斜視図で示すように、筐体１００の表面に複数の直立した冷却フィン１１０を直線状に並列に形成して、内蔵するパワーアンプ等の電子デバイスの温度上昇を抑えるようにしている。ところが、基地局が屋外等の日差しを受ける場所に設置されている場合は、図３に一部の拡大断面図を示すように、隣接する冷却フィン１１０の間隙を通して筐体表面１００ａに矢印で示す日差しが差込み、それにより筐体表面１００ａが直接加熱されて内部温度が上昇する場合がある。   For example, in a base station of a wireless communication system having an airtight casing, a plurality of upstanding cooling fins 110 are formed in a straight line in parallel on the surface of the casing 100 as shown in a perspective view in FIG. The temperature rise of electronic devices such as built-in power amplifiers is suppressed. However, when the base station is installed in a place that receives sunlight, such as outdoors, as shown in a partial enlarged cross-sectional view in FIG. 3, it is indicated by an arrow on the housing surface 100 a through a gap between adjacent cooling fins 110. There is a case where the sunlight is inserted, whereby the housing surface 100a is directly heated and the internal temperature rises.

その対策として、例えば、遮光を必要とする筐体面の全体を覆うように、日除け板を設けることが知られている（例えば、特許文献１参照）。   As a countermeasure, for example, it is known to provide a sunscreen so as to cover the entire housing surface that needs to be shielded from light (see, for example, Patent Document 1).

特開平１０−４１８７３号公報JP 10-41873 A

しかしながら、冷却フィンを有する面側に、特許文献１に開示の日除け板を設けると、冷却フィンによる空気の流れが阻害されて、冷却フィンによる冷却効率が低下し、結果として、日射による温度上昇を防止できないことになる。しかも、日射によって日除け板自体が温度上昇すると、日除け板から再輻射される熱によって筐体が加熱され、筐体の温度上昇が加速されることも懸念される。なお、このような問題は、日射に限らず、熱線源を有する屋内に筐体が設置される場合も同様に生じるものである。   However, if the sunscreen disclosed in Patent Document 1 is provided on the surface side having the cooling fins, the flow of air by the cooling fins is hindered, and the cooling efficiency by the cooling fins is reduced. As a result, the temperature rises due to solar radiation. It cannot be prevented. In addition, when the temperature of the awning plate itself rises due to solar radiation, there is a concern that the case is heated by the heat re-radiated from the awning plate and the temperature rise of the case is accelerated. Such a problem occurs not only in the case of solar radiation but also in the case where the housing is installed indoors having a heat ray source.

したがって、かかる点に鑑みてなされた本発明の目的は、外部からの熱線による温度上昇を抑えることができ、冷却効率を向上できる冷却フィン構造を提供することにある。   Therefore, the objective of this invention made | formed in view of this point is to provide the cooling fin structure which can suppress the temperature rise by the heat ray from the outside, and can improve cooling efficiency.

上記目的を達成する第１の観点に係る冷却フィン構造の発明は、複数の冷却フィンを並列に配列してなる冷却フィン構造であって、
少なくとも一部の冷却フィンの先端部に、該冷却フィンの延在方向に亘って形成された屈曲部を備える、
ことを特徴とするものである。 The invention of the cooling fin structure according to the first aspect to achieve the above object is a cooling fin structure formed by arranging a plurality of cooling fins in parallel,
At least a part of the cooling fin includes a bent portion formed in the extending direction of the cooling fin.
It is characterized by this.

第２の観点に係る発明は、第１の観点に係る冷却フィン構造において、
前記屈曲部の劣角θは、９０度＜θ＜１８０度を満足する、
ことを特徴とするものである。 The invention according to the second aspect is the cooling fin structure according to the first aspect,
The inferior angle θ of the bent portion satisfies 90 ° <θ <180 °.
It is characterized by this.

第３の観点に係る発明は、第２の観点に係る冷却フィン構造において、
前記屈曲部は、隣接する冷却フィンの間を覆う投影面積を有する、
ことを特徴とするものである。 The invention according to a third aspect is the cooling fin structure according to the second aspect,
The bent portion has a projected area covering between adjacent cooling fins,
It is characterized by this.

本発明に係る冷却フィン構造によると、屈曲部によって日射等の外部からの熱線の進入が遮られるので、外部からの熱線による温度上昇を有効に抑えることができ、冷却効率を向上することが可能となる。   According to the cooling fin structure according to the present invention, since the entry of heat rays from the outside such as solar radiation is blocked by the bent portion, the temperature rise due to the heat rays from the outside can be effectively suppressed, and the cooling efficiency can be improved. It becomes.

本発明の一実施の形態に係る冷却フィン構造の要部の構成を模式的に示す拡大断面図である。It is an expanded sectional view showing typically composition of an important section of a cooling fin structure concerning one embodiment of the present invention. 従来の冷却フィン構造を示す斜視図である。It is a perspective view which shows the conventional cooling fin structure. 図２の一部の拡大断面図である。FIG. 3 is an enlarged sectional view of a part of FIG. 2.

以下、本発明の実施の形態について、図を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施の形態に係る冷却フィン構造の要部の構成を模式的に示す拡大断面図である。図１に示す冷却フィン構造は、図２に示した気密構造の筐体を有する無線通信システムの基地局に適用したもので、筐体１０の全体は、例えばアルミダイカストからなる。この筐体１０の表面には、複数の冷却フィン１１が並列に直立して形成されており、その各々の先端部には、冷却フィン１１の延在方向に亘って屈曲部１２が一体に形成されている。   FIG. 1 is an enlarged cross-sectional view schematically showing a configuration of a main part of a cooling fin structure according to an embodiment of the present invention. The cooling fin structure shown in FIG. 1 is applied to the base station of the wireless communication system having the airtight housing shown in FIG. 2, and the entire housing 10 is made of, for example, aluminum die casting. A plurality of cooling fins 11 are formed upright in parallel on the surface of the housing 10, and a bent portion 12 is integrally formed at the tip of each of the cooling fins 11 in the extending direction of the cooling fins 11. Has been.

各屈曲部１２は、当該冷却フィン１１の筐体表面１０ａからの直立部分１１ａと成す劣角θが、９０度＜θ＜１８０度を満足する。また、各屈曲部１２は、筐体表面１０ａの平面視において、隣接する冷却フィンの間を覆う投影面積を有するように形成されている。   Each bent portion 12 satisfies an inferior angle θ formed with the upright portion 11a of the cooling fin 11 from the housing surface 10a of 90 ° <θ <180 °. Each bent portion 12 is formed so as to have a projected area covering between adjacent cooling fins in plan view of the housing surface 10a.

本実施の形態に係る冷却フィン構造によると、筐体１０が、例えば屋外に設置された場合、図１に矢印で示す日差しは、屈曲部１２で遮られて筐体表面１０ａに達しない。したがって、筐体表面１０ａが日射によって直接加熱されることがない。また、屈曲部１２は、冷却フィン１１の先端部に形成されているので、日射によって加熱されても、気流による冷却効果が大きい。そのため、屈曲部１２の熱は、筐体表面１０ａに伝達しにくい。   According to the cooling fin structure according to the present embodiment, when the housing 10 is installed, for example, outdoors, the sun indicated by the arrow in FIG. 1 is blocked by the bent portion 12 and does not reach the housing surface 10a. Therefore, the housing surface 10a is not directly heated by solar radiation. Moreover, since the bending part 12 is formed in the front-end | tip part of the cooling fin 11, even if it heats by solar radiation, the cooling effect by an airflow is large. For this reason, the heat of the bent portion 12 is difficult to be transmitted to the housing surface 10a.

以上のことから、本実施の形態に係る冷却フィン構造によると、日射による筐体内部の温度上昇を効果的に防止することができる。例えば、本発明者が行った比較実験によると、図２に示した従来の冷却フィン構造を有する基地局の場合、日射による筐体内部の平均温度上昇が７度であったのに対して、同様の基地局に本実施の形態による冷却フィン構造を適用した場合、日射による筐体内部の平均温度上昇を従来の５０％以下にできたことが確認できた。したがって、筐体内の電子デバイスの冷却を促進できるので、基地局の小型化が可能となる。   From the above, according to the cooling fin structure according to the present embodiment, it is possible to effectively prevent a temperature rise inside the housing due to solar radiation. For example, according to a comparative experiment conducted by the present inventors, in the case of the base station having the conventional cooling fin structure shown in FIG. 2, the average temperature rise inside the housing due to solar radiation was 7 degrees, When the cooling fin structure according to the present embodiment was applied to the same base station, it was confirmed that the average temperature increase inside the casing due to solar radiation could be reduced to 50% or less of the conventional case. Therefore, since the cooling of the electronic device in the housing can be promoted, the base station can be downsized.

なお、本発明は、上記実施の形態にのみ限定されるものではなく、幾多の変形または変更が可能である。例えば、冷却フィンは、筐体と一体に形成される場合に限らず、筐体と別体に形成されて、筐体表面に取り付けられる構造であってもよい。また、本発明に係る冷却フィン構造は、屋外設置機器に限らず、熱線源を有する屋内に設置される機器に対しても有効に適用することができる。さらに、屈曲部は、冷却フィンの直立部分の平面視において、隣接する冷却フィンの間を完全に覆う投影面積を有する形状に限らず、日射等の熱線の入射方向に見て、隣接する冷却フィンの間の底部および／または隣接する冷却フィンの直立部分に入射しないような投影面積を有する形状に形成することも可能である。   In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, the cooling fin is not limited to being formed integrally with the housing, and may be formed separately from the housing and attached to the surface of the housing. Further, the cooling fin structure according to the present invention can be effectively applied not only to outdoor installation equipment but also to equipment installed indoors having a heat ray source. Furthermore, the bent portion is not limited to a shape having a projected area that completely covers the space between adjacent cooling fins in plan view of the upright portion of the cooling fin, but is adjacent to the cooling fin as viewed in the incident direction of heat rays such as solar radiation. It is also possible to form a shape having a projected area so as not to be incident on the bottom portion between and / or the upright portion of the adjacent cooling fin.

１０ 筐体
１０ａ 筐体表面
１１ 冷却フィン
１１ａ 直立部分
１２ 屈曲部 DESCRIPTION OF SYMBOLS 10 Housing | casing 10a Housing | casing surface 11 Cooling fin 11a Upright part 12 Bending part

Claims (3)

複数の冷却フィンを並列に配列してなる冷却フィン構造であって、
少なくとも一部の冷却フィンの先端部に、該冷却フィンの延在方向に亘って形成された屈曲部を備える、
ことを特徴とする冷却フィン構造。 A cooling fin structure in which a plurality of cooling fins are arranged in parallel,
At least a part of the cooling fin includes a bent portion formed in the extending direction of the cooling fin.
A cooling fin structure characterized by that. 前記屈曲部の劣角θは、９０度＜θ＜１８０度を満足する、
ことを特徴とする請求項１に記載の冷却フィン構造。 The inferior angle θ of the bent portion satisfies 90 ° <θ <180 °.
The cooling fin structure according to claim 1. 前記屈曲部は、隣接する冷却フィンの間を覆う投影面積を有する、
ことを特徴とする請求項２に記載の冷却フィン構造。 The bent portion has a projected area covering between adjacent cooling fins,
The cooling fin structure according to claim 2.
JP2011049396A 2011-03-07 2011-03-07 Cooling fin structure Withdrawn JP2012186378A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7364006B2 (en) 2018-03-27 2023-10-18 ブラザー工業株式会社 Electronic component mounting equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7364006B2 (en) 2018-03-27 2023-10-18 ブラザー工業株式会社 Electronic component mounting equipment

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