JP4083597B2 - ECU heat dissipation structure - Google Patents

ECU heat dissipation structure Download PDF

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Publication number
JP4083597B2
JP4083597B2 JP2003058772A JP2003058772A JP4083597B2 JP 4083597 B2 JP4083597 B2 JP 4083597B2 JP 2003058772 A JP2003058772 A JP 2003058772A JP 2003058772 A JP2003058772 A JP 2003058772A JP 4083597 B2 JP4083597 B2 JP 4083597B2
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JP
Japan
Prior art keywords
ecu
storage case
air
heat dissipation
duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2003058772A
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Japanese (ja)
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JP2004268629A (en
Inventor
昌彦 尾沼
智洋 内田
清 嶋瀬
勇智 山ノ内
尚 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Toyota Motor Corp
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Denso Corp
Toyota Motor Corp
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Priority to JP2003058772A priority Critical patent/JP4083597B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow

Description

【０００１】
【発明の属する技術分野】
本発明はＥＣＵの放熱構造に係り、特に、ダクト近傍にＥＣＵを配設したＥＣＵの放熱構造に関する。
【０００２】
【従来の技術】
従来、自動車等の車両においては、空調用ブロアから送風される新気をバッテリ収納部に吹き出し、バッテリ収納部に配設されたバッテリを冷却する構成が知られている（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２０００−２３３６４８号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、例えば、インストルメントパネル内に配設される情報表示機器、空調操作機器、オーディオ機器等の各ＥＣＵにおいては、それぞれのＥＣＵに冷却ファン、放熱フィン等の放熱手段が取り付けられている。このため、部品点数が多くなると共に、重量が増加するという不具合がある。
【０００５】
本発明は上記事実を考慮し、部品点数及び重量の増加を抑制しつつ、ＥＣＵの放熱を効果的に行えるＥＣＵの放熱構造を得ることが目的である。
【０００６】
【課題を解決するための手段】
請求項１記載の本発明におけるＥＣＵの放熱構造は、ＥＣＵ収納ケースと空調用ダクト本体とを一体構造とし、前記空調用ダクト本体の内部と前記ＥＣＵ収納ケースの内部とを連通する通気手段を有すると共に、前記空調用ダクト本体と前記ＥＣＵ収納ケースとの間に、前記空調用ダクト本体の結露によって発生した水をドレインを介して車外へ排水するための溝を形成したことを特徴とする。
【０００７】
従って、空調用ダクト本体の内部とＥＣＵ収納ケースの内部を連通する通気手段によって、空調用ダクト本体内の風をＥＣＵ収納ケース内に送ることで、ＥＣＵ収納ケース内に搭載されたＥＣＵを効果的に冷却することができる。この結果、ＥＣＵ収納ケースに冷却ファン、冷却フィン等を別途配設する必要がない。このため、部品点数及び重量の増加を抑制しつつ、ＥＣＵの放熱を効果的に行える。また、空調用ダクト本体とＥＣＵ収納ケースとの間に形成した溝によって、空調用ダクト本体に結露によって生じた水がドレインを介して車外へ排水されるため、ＥＣＵ収納ケース内へ浸入するのを防止できる。
【００１２】
【発明の実施の形態】
本発明におけるＥＣＵの放熱構造の参考例となる実施形態を図１〜図３に従って説明する。
【００１３】
なお、図中矢印ＦＲは車両前方方向を、矢印ＵＰは車両上方方向を示す。
【００１４】
図３に示される如く、本実施形態の自動車車体では、インストルメントパネ１０の上部内側に、エアコン用ダクト１２が車幅方向に沿って配設されている。このエアコン用ダクト１２は、アルミニウム、マグネシウム等の軽金属で構成されており、エアコンユニット１４のブロアのフィルタ１４Ａを通した空気を、サイドレジスタ１６等に送風している。
【００１５】
図１に示される如く、エアコン用ダクト１２は、ダクト本体２０とＥＣＵ収納ケース２２とが一体構造とされており、ダクト本体２０の車幅方向から見た断面は矩形状となっている。
【００１６】
また、ＥＣＵ収納ケース２２はダクト本体２０の下部に形成されており、ＥＣＵ収納ケース２２とダクト本体２０とは、前壁部２４と後壁部２６とによって連結されている。
【００１７】
ＥＣＵ収納ケース２２には、車幅方向に沿って複数の収納部２８に分割されており、各収納部２８の左右の壁部２８Ａには、それぞれレール溝３０が形成されている。これらのレール溝３０は、ＥＣＵ収納ケース２２の内部に収納されるＥＣＵ（電子制御装置）３４の左右の縁部３４Ａを支持するようになっている。
【００１８】
図２に示される如く、各収納部２８は、車体前方側に縦壁部２８Ｂを備えており、車体後方側の開口部２８Ｃには、蓋３６がビス等の固定部材３８によって固定されている。
【００１９】
図１に示される如く、蓋３６の四隅には、固定部材３８が挿通する孔４０が形成されており、蓋３６の略中央部には、矩形状の切欠４２が形成されている。この切欠４２には、ＥＣＵ３４に配設したコネクタ４４が挿通するようになっている。なお、図示を省略したが、各収納部２８の開口部２８Ｃと蓋３６との当接部及びコネクタ４４と切欠４２との当接部はそれぞれ防水構造となっている。
【００２０】
また、ＥＣＵ収納ケース２２とダクト本体２０とを連結する前壁部２４と後壁部２６とには、それぞれダクト本体２０の内部とＥＣＵ収納ケース２２の内部である各収納部２８を連通する通気手段としての通気孔４６が複数形成されており、これらの通気孔４６を通してダクト本体２０の空気を各収納部２８内に循環させることができるようになっている。
【００２１】
次に本実施形態の作用を説明する。
【００２２】
本実施形態では、エアコンユニット１４から送風される冷風等の調整風が、エアコン用ダクト１２のダクト本体２０を通ってサイドレジスタ１６等に送風される。この際、調整風の一部が、ＥＣＵ収納ケース２２とダクト本体２０とを連結する前壁部２４と後壁部２６とに形成した通気孔４６を通って、各収納部２８内を循環し、各収納部２８内に配設されたＥＣＵ３４を冷却する。
【００２３】
この結果、本実施形態では、各ＥＣＵ３４を冷却するための冷却ファン、放熱フィン等の放熱手段を別途設ける必要が無くなる。このため、部品点数及び重量の増加を抑制しつつＥＣＵ３４の放熱を効果的に行える。
【００２４】
また、本実施形態では、エアコンユニット１４のブロアのフィルタ１４Ａを通した空気をダクト本体２０に通すことにより、ＥＣＵ３４にごみ等が付着するのを防止できる。
【００２５】
更に、エアコンユニット１４のブロアのフィルタ１４Ａを通した空気をダクト本体２０に通すことにより、ＥＣＵ収納ケース２２にフィルタを別途配設する必要が無くコストを低減できる。
【００２６】
次に、本発明におけるＥＣＵの放熱構造の一実施形態を図４及び図５に従って説明する。
【００２７】
なお、参考例の実施形態と同一部材に付いては、同一符号を付してその説明を省略する。
【００２８】
図４に示される如く、本実施形態では、ＥＣＵ収納ケース２２とダクト本体２０との間の連結部４９に、複数のＶ溝５０が形成されており、これらのＶ溝５０は、エアコン用ダクト１２の軸線方向、即ち、車幅方向に沿って形成されている。
【００２９】
図５に示される如く、エアコン用ダクト１２は、車幅方向中央部１２Ａが低く車幅方向両端部１２Ｂが高くなっており傾斜している。このため、ダクト本体２０の結露によって発生した水は、複数のＶ溝５０に沿って、エアコン用ダクト１２の車幅方向中央部１２Ａに流れ、エアコンユニット１４のドレイン１４Ｂを介して車外へ排水されるようになっている。
【００３０】
次に、本実施形態の作用を説明する。
【００３１】
本実施形態では、参考例の実施形態の作用効果に加えて、ダクト本体２０の外周部、特に、下面２０Ａが結露した場合には、結露によって発生した水は、ＥＣＵ収納ケース２２とダクト本体２０との間の連結部４９に形成した複数のＶ溝５０に沿って、エアコン用ダクト１２の車幅方向中央部１２Ａに流れ、エアコンユニット１４のドレイン１４Ｂを介して車外へ排水される。
【００３２】
この結果、ダクト本体２０の外周部に結露によって発生した水が、ＥＣＵ収納ケース２２の蓋３６側に回り込み、蓋３６と収納部２８の開口部２８Ｃとの隙間から収納部２８内へ浸入するのを防止できる。
【００３３】
なお、Ｖ溝５０に限定されず、Ｕ溝等の他の構造としても良い。
【００３４】
以上に於いては、本発明を特定の実施形態について詳細に説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能であることは当業者にとって明らかである。例えば、上記各実施形態では、エアコン用ダクト１２をアルミニウム、マグネシウム等の軽金属で構成したが、エアコン用ダクト１２はアルミニウム、マグネシウム等の軽金属に限定されず、鉄等の他の金属で構成しても良い。
【００３５】
また、上記各実施形態では、本発明のＥＣＵの放熱構造を自動車のインストルメントパネ１０に配設するＥＣＵ３４に適用したが、本発明のＥＣＵの放熱構造は、自動車における他の部位に搭載されるＥＣＵ、自動車以外の車両に搭載されるＥＣＵ、及び車両以外に搭載されるＥＣＵにも適用可能である。
【００３６】
【発明の効果】
請求項１記載の本発明におけるＥＣＵの放熱構造は、ＥＣＵ収納ケースと空調用ダクト本体とを一体構造とし、空調用ダクト本体の内部とＥＣＵ収納ケースの内部とを連通する通気手段を有すると共に、空調用ダクト本体とＥＣＵ収納ケースとの間に、空調用ダクト本体の結露によって発生した水をドレインを介して車外へ排水するための溝を形成したため、部品点数及び重量の増加を抑制しつつ、ＥＣＵの放熱を効果的に行えるという優れた効果を有する。また、空調用ダクト本体に結露によって生じた水がＥＣＵ収納ケース内へ浸入するのを防止できるという優れた効果を有する。
【図面の簡単な説明】
【図１】 本発明の参考例の実施形態に係るＥＣＵの放熱構造を示す車両斜め後方側から見た一部を断面とした斜視図である。
【図２】 図１の２−２線に沿った拡大断面図である。
【図３】 本発明の参考例の実施形態に係るＥＣＵの放熱構造が適用されたインストルメントパネルを示す車両斜め後方側から見た斜視図である。
【図４】 本発明の一実施形態に係るＥＣＵの放熱構造を示す車両斜め後方側から見た一部を断面とした斜視図である。
【図５】 本発明の一実施形態に係るＥＣＵの放熱構造を示す車両斜め後方側から斜視図である。
【符号の説明】
１０ インストルメントパネ
１２ エアコン用ダクト
１４ エアコンユニット
１４Ａ ブロアのフィルタ
２０ ダクト本体
２２ ＥＣＵ収納ケース
２４ 前壁部
２６ 後壁部
２８ ＥＣＵ収納ケースの収納部
３４ ＥＣＵ
３６ ＥＣＵ収納ケースの蓋
４６ 通気孔（通気手段）
５０ Ｖ溝 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat dissipation structure for an ECU, and more particularly to a heat dissipation structure for an ECU in which an ECU is disposed near a duct.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a vehicle such as an automobile, a configuration is known in which fresh air blown from an air-conditioning blower is blown into a battery storage unit and a battery disposed in the battery storage unit is cooled (see, for example, Patent Document 1). .).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-233648
[Problems to be solved by the invention]
However, for example, in each ECU such as an information display device, an air-conditioning operation device, and an audio device disposed in the instrument panel, a heat radiating means such as a cooling fan and a heat radiating fin is attached to each ECU. For this reason, there are problems that the number of parts increases and the weight increases.
[0005]
An object of the present invention is to obtain an ECU heat dissipation structure that can effectively dissipate the ECU while suppressing an increase in the number of parts and the weight in consideration of the above facts.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a heat dissipation structure for an ECU, in which an ECU storage case and an air conditioning duct body are integrated, and has ventilation means that communicates the interior of the air conditioning duct body with the interior of the ECU storage case. In addition, a groove is formed between the air conditioning duct body and the ECU storage case for draining water generated by the condensation of the air conditioning duct body to the outside of the vehicle through the drain .
[0007]
Therefore, by sending the air in the air conditioning duct body into the ECU storage case by the ventilation means that communicates the inside of the air conditioning duct body and the inside of the ECU storage case, the ECU mounted in the ECU storage case can be effectively used. Can be cooled to. As a result, there is no need to separately provide a cooling fan, a cooling fin, or the like in the ECU storage case. For this reason, it is possible to effectively dissipate the ECU while suppressing an increase in the number of parts and weight. In addition, the groove formed between the air conditioning duct main body and the ECU storage case allows water generated by condensation in the air conditioning duct main body to be drained out of the vehicle through the drain, so that it can enter the ECU storage case. Can be prevented.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment serving as a reference example of a heat dissipation structure for an ECU according to the present invention will be described with reference to FIGS.
[0013]
In the figure, the arrow FR indicates the vehicle forward direction, and the arrow UP indicates the vehicle upward direction.
[0014]
As shown in FIG. 3, in the automobile body of the present embodiment, an air conditioner duct 12 is disposed along the vehicle width direction inside the upper portion of the instrument panel 10. The air conditioner duct 12 is made of a light metal such as aluminum or magnesium, and blows air that has passed through a blower filter 14A of the air conditioner unit 14 to the side register 16 or the like.
[0015]
As shown in FIG. 1, the air conditioner duct 12 has a duct body 20 and an ECU storage case 22 integrally formed, and the cross section of the duct body 20 viewed from the vehicle width direction is rectangular.
[0016]
The ECU storage case 22 is formed in the lower part of the duct main body 20, and the ECU storage case 22 and the duct main body 20 are connected by a front wall portion 24 and a rear wall portion 26.
[0017]
The ECU storage case 22 is divided into a plurality of storage portions 28 along the vehicle width direction, and rail grooves 30 are formed in the left and right wall portions 28A of the storage portions 28, respectively. These rail grooves 30 support left and right edge portions 34 </ b> A of an ECU (electronic control unit) 34 housed in the ECU housing case 22.
[0018]
As shown in FIG. 2, each storage portion 28 includes a vertical wall portion 28B on the front side of the vehicle body, and a lid 36 is fixed to an opening portion 28C on the rear side of the vehicle body by a fixing member 38 such as a screw. .
[0019]
As shown in FIG. 1, holes 40 through which the fixing members 38 are inserted are formed at the four corners of the lid 36, and rectangular cutouts 42 are formed at substantially the center of the lid 36. A connector 44 disposed in the ECU 34 is inserted into the notch 42. Although not shown, the contact portion between the opening 28C and the lid 36 of each storage portion 28 and the contact portion between the connector 44 and the notch 42 have a waterproof structure.
[0020]
Further, the front wall portion 24 and the rear wall portion 26 that connect the ECU storage case 22 and the duct main body 20 communicate with the interior of the duct main body 20 and the storage portions 28 inside the ECU storage case 22, respectively. A plurality of ventilation holes 46 as means are formed, and the air of the duct body 20 can be circulated in the respective storage portions 28 through these ventilation holes 46.
[0021]
Next, the operation of this embodiment will be described.
[0022]
In the present embodiment, adjustment air such as cold air blown from the air conditioner unit 14 is blown to the side register 16 or the like through the duct body 20 of the air conditioner duct 12. At this time, a part of the adjustment air circulates in each storage portion 28 through a vent hole 46 formed in the front wall portion 24 and the rear wall portion 26 connecting the ECU storage case 22 and the duct body 20. The ECU 34 disposed in each storage unit 28 is cooled.
[0023]
As a result, in the present embodiment, there is no need to separately provide a heat radiating means such as a cooling fan or a heat radiating fin for cooling each ECU 34. For this reason, heat dissipation of the ECU 34 can be effectively performed while suppressing an increase in the number of parts and weight.
[0024]
Further, in the present embodiment, dust or the like can be prevented from adhering to the ECU 34 by passing the air that has passed through the blower filter 14 </ b> A of the air conditioner unit 14 through the duct body 20.
[0025]
Further, by passing the air that has passed through the blower filter 14A of the air conditioner unit 14 through the duct body 20, it is not necessary to separately provide a filter in the ECU storage case 22, and the cost can be reduced.
[0026]
Next, an embodiment of a heat dissipation structure for an ECU according to the present invention will be described with reference to FIGS.
[0027]
In addition, about the same member as embodiment of a reference example , the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0028]
As shown in FIG. 4, in the present embodiment, a plurality of V grooves 50 are formed in the connecting portion 49 between the ECU storage case 22 and the duct body 20, and these V grooves 50 are air conditioner ducts. 12 axial directions, that is, along the vehicle width direction.
[0029]
As shown in FIG. 5, the air conditioner duct 12 is inclined such that the central portion 12A in the vehicle width direction is low and both end portions 12B in the vehicle width direction are high. For this reason, the water generated by the condensation of the duct main body 20 flows along the plurality of V-grooves 50 to the vehicle width direction central portion 12A of the air conditioner duct 12 and is drained outside the vehicle through the drain 14B of the air conditioner unit 14. It has become so.
[0030]
Next, the operation of this embodiment will be described.
[0031]
In the present embodiment, in addition to the effects of the embodiment of the reference example, when the outer peripheral portion of the duct main body 20, particularly, the lower surface 20 </ b> A is condensed, water generated by the dew condensation is generated in the ECU storage case 22 and the duct main body 20. Along the plurality of V-grooves 50 formed in the connecting portion 49 between the air-conditioner and the air-conditioner duct 12, the air-conditioner duct 12 flows to the center 12 </ b> A in the vehicle width direction and is discharged outside the vehicle via the drain 14 </ b> B of the air-conditioner unit 14.
[0032]
As a result, water generated by condensation on the outer peripheral portion of the duct body 20 wraps around the lid 36 side of the ECU storage case 22 and enters the storage portion 28 through a gap between the lid 36 and the opening 28C of the storage portion 28. Can be prevented.
[0033]
The structure is not limited to the V-groove 50 , and other structures such as a U-groove may be used.
[0034]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in each of the above embodiments, the air conditioner duct 12 is made of a light metal such as aluminum or magnesium. However, the air conditioner duct 12 is not limited to a light metal such as aluminum or magnesium, but is made of another metal such as iron. Also good.
[0035]
Further, in each of the above embodiments, the heat dissipation structure of the ECU of the present invention is applied to the ECU 34 disposed in the instrument panel 10 of the automobile. However, the heat dissipation structure of the ECU of the present invention is mounted on another part of the automobile. The present invention is also applicable to ECUs, ECUs mounted on vehicles other than automobiles, and ECUs mounted on vehicles other than vehicles.
[0036]
【The invention's effect】
The ECU heat dissipation structure according to the first aspect of the present invention has an ECU housing case and an air conditioning duct body as an integral structure, and has ventilation means for communicating the inside of the air conditioning duct body and the inside of the ECU housing case , A groove is formed between the air conditioning duct body and the ECU storage case to drain the water generated by condensation on the air conditioning duct body to the outside of the vehicle through the drain , thereby suppressing an increase in the number of parts and weight. The ECU has an excellent effect that heat can be effectively dissipated. Moreover, it has the outstanding effect that it can prevent that the water produced by the dew condensation on the air conditioning duct main body enters the ECU storage case.
[Brief description of the drawings]
FIG. 1 is a perspective view, partly in section, showing a heat dissipation structure of an ECU according to an embodiment of a reference example of the present invention as seen from the obliquely rear side of a vehicle.
FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG.
FIG. 3 is a perspective view of an instrument panel to which a heat dissipation structure for an ECU according to an embodiment of a reference example of the present invention is applied, as viewed from the obliquely rear side of the vehicle.
FIG. 4 is a perspective view, partly in section, showing a heat dissipation structure for an ECU according to an embodiment of the present invention as viewed from the obliquely rear side of the vehicle.
FIG. 5 is a perspective view showing the heat dissipation structure of the ECU according to the embodiment of the present invention from the obliquely rear side of the vehicle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Instrument panel 12 Air-conditioner duct 14 Air-conditioner unit 14A Blower filter 20 Duct main body 22 ECU storage case 24 Front wall part 26 Rear wall part 28 ECU storage case storage part 34 ECU
36 ECU Storage Case Cover 46 Ventilation Hole (Ventilation Means)
50 V groove

Claims (1)

ＥＣＵ収納ケースと空調用ダクト本体とを一体構造とし、前記空調用ダクト本体の内部と前記ＥＣＵ収納ケースの内部とを連通する通気手段を有すると共に、前記空調用ダクト本体と前記ＥＣＵ収納ケースとの間に、前記空調用ダクト本体の結露によって発生した水をドレインを介して車外へ排水するための溝を形成したことを特徴とするＥＣＵの放熱構造。The ECU storage case and the air conditioning duct main body have an integrated structure, and have ventilation means for communicating the inside of the air conditioning duct main body and the inside of the ECU storage case, and the air conditioning duct main body and the ECU storage case A heat dissipation structure for an ECU, characterized in that a groove for draining water generated by condensation of the air conditioning duct body to the outside of the vehicle through a drain is formed .
JP2003058772A 2003-03-05 2003-03-05 ECU heat dissipation structure Expired - Fee Related JP4083597B2 (en)

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JP4083597B2 true JP4083597B2 (en) 2008-04-30

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Publication number Priority date Publication date Assignee Title
DE102012204892A1 (en) * 2012-03-27 2013-10-02 Mekra Lang Gmbh & Co. Kg Temperable housing for receiving an electronic device and vehicle with this housing
EP3819139A1 (en) * 2019-11-08 2021-05-12 Volvo Car Corporation A module for accomodating and cooling electronic circuitry in a vehicle

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