JP2003011742A - Housing case of on-vehicle electronic equipment - Google Patents
Housing case of on-vehicle electronic equipmentInfo
- Publication number
- JP2003011742A JP2003011742A JP2001195366A JP2001195366A JP2003011742A JP 2003011742 A JP2003011742 A JP 2003011742A JP 2001195366 A JP2001195366 A JP 2001195366A JP 2001195366 A JP2001195366 A JP 2001195366A JP 2003011742 A JP2003011742 A JP 2003011742A
- Authority
- JP
- Japan
- Prior art keywords
- case body
- moisture
- case
- electronic device
- ventilation hole
- 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.)
- Pending
Links
Landscapes
- Packages (AREA)
- Drying Of Gases (AREA)
- Casings For Electric Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内部に収容される
電子機器への結露水付着を抑制する車載用電子機器の収
容ケースに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing case for an on-vehicle electronic device that suppresses the attachment of dew condensation water to the electronic device housed inside.
【０００２】[0002]
【従来の技術】従来より、内部に電子機器を収容したケ
ース体には、このケース体の所望部分にケース体の内外
圧力差を調整する限定通気孔が設けられている。若しく
はケース体の内側と外側とを気密にさせずに隙間（通気
孔）を有するケース体を構成している。この限定通気孔
または隙間を有していることで、ケース体の外部から内
部へ湿気を含んだ空気が混入し、ケース体の置かれる周
囲温度の変化等によりケース体の内部に結露水が生成さ
れる。この生成される結露水がケース体内部の電子機器
に付着すると、電子機器の動作不良等に至ることがあ
る。そこで、限定通気孔を設けることでケース体の外部
からケース体の内部へ通気する部分を限定させ、この限
定通気孔からの湿気の侵入を抑制したり、隙間（通気
孔）を有するケース体の内部に存在する湿気およびこの
湿気から生成される結露水を吸湿あるいは吸収する技術
が種々開示されている。2. Description of the Related Art Conventionally, a case body having an electronic device accommodated therein is provided with a limited vent hole at a desired portion of the case body for adjusting a pressure difference between the inside and outside of the case body. Alternatively, the case body is configured to have a gap (ventilation hole) without making the inside and the outside of the case body airtight. With this limited ventilation hole or gap, air containing moisture is mixed from the outside to the inside of the case body, and condensed water is generated inside the case body due to changes in the ambient temperature where the case body is placed. To be done. If the generated condensed water adheres to the electronic device inside the case body, the electronic device may malfunction. Therefore, by providing a limited ventilation hole, the portion that vents from the outside of the case body to the inside of the case body is limited, and the invasion of moisture from the limited ventilation hole is suppressed, or a case body having a gap (ventilation hole) is provided. Various techniques for absorbing or absorbing moisture existing inside and condensed water generated from this moisture have been disclosed.
【０００３】特開平５−８０５１８号および特開平６−
３１１３０号等に開示されている技術では、ケース体に
設けられる限定通気孔周辺に吸湿材を配置させて通気孔
からケース体内部への湿気の侵入を防ぎ、ケース体内部
の電子機器周辺への結露水の付着を抑制している。実開
平７−８４７１に開示されている技術では、ケース体の
内部に吸湿体を配置させ、ケース体の内部に侵入してし
まった湿気を除去してケース体内部の電子機器周辺への
結露水の付着を抑制している。特開平８−２０３３６５
号に開示されている技術では、ケース体の内部に吸水体
を配置させ、ケース体の内部に侵入してしまった湿気が
存在することにより生成される結露水を吸収しケース体
内部の電子機器周辺への結露水の付着を抑制している。JP-A-5-80518 and JP-A-6-
In the technology disclosed in No. 31130 and the like, a moisture absorbent is arranged around the limited ventilation hole provided in the case body to prevent moisture from entering the inside of the case body through the ventilation hole, and to protect the surroundings of electronic devices inside the case body. Controls the adhesion of condensed water. In the technique disclosed in Japanese Utility Model Laid-Open No. 7-8471, a moisture absorber is arranged inside the case body to remove moisture that has entered the case body, thereby forming condensed water around the electronic device inside the case body. Suppresses the adhesion of. JP-A-8-203365
According to the technology disclosed in Japanese Patent No. 2, the water absorbing body is arranged inside the case body to absorb the dew condensation water generated due to the presence of moisture that has penetrated into the case body, and the electronic device inside the case body is absorbed. It controls the adhesion of condensed water to the surrounding area.
【０００４】[0004]
【発明が解決しようとする課題】しかし、これら開示さ
れている従来の技術は、ケース体の内部および内部へ至
る経路途中の空気中に存在する湿気または結露水のいず
れか一方のみに注視し、この湿気または結露水のいずれ
か一方を吸着させることのできる吸湿体あるいは吸水体
を備えている。However, the conventional techniques disclosed above focus on only one of the moisture and the dew condensation water present in the inside of the case body and the air on the way to the inside of the case body, A moisture absorber or water absorber capable of adsorbing either the moisture or the condensed water is provided.
【０００５】ここで、ケース体の外部から内部への湿気
の侵入過程においては、湿気の状態で存在したり湿気か
ら結露水へと形態を変化させて存在する。つまり、吸湿
体あるいは吸水体のいずれか一方を備えているのでは、
湿気および結露水の双方を効果的に吸収除去できない。
このことは、ケース体内部の電子機器周辺への結露水の
付着を抑制することができず問題である。特に、車載さ
れる電子機器を収容したケース体にあっては、そのケー
ス体の配置される環境がエンジンルーム等の温度、湿度
ともにその変化幅が大きく、また温度、湿度の急変さが
激しいのでケース体内で結露水が発生しやすい状況であ
る。Here, in the process of infiltration of moisture from the outside to the inside of the case body, it exists in the state of moisture or changes its form from moisture to dew condensation water. In other words, if it is equipped with either a moisture absorber or a water absorber,
It cannot absorb and remove both moisture and condensed water effectively.
This is a problem because the dew condensation water cannot be prevented from adhering to the periphery of the electronic device inside the case body. In particular, in the case body containing the electronic equipment to be mounted on the vehicle, the environment in which the case body is placed has a wide range of change in temperature and humidity in the engine room, etc., and the temperature and humidity change rapidly. Condensation water is easily generated in the case body.
【０００６】本発明の目的は上記の点に鑑み、湿気およ
び結露水の双方を効果的に吸収除去してケース体内部に
配設される電子機器周辺への結露水の付着を抑制できる
車載用電子機器の収容ケースを提供することにある。In view of the above points, an object of the present invention is to mount on-vehicle which can effectively absorb and remove both moisture and dew condensation water and suppress adhesion of dew condensation water to the periphery of electronic equipment arranged inside the case body. An object is to provide a housing case for electronic devices.
【０００７】[0007]
【課題を解決するための手段】上述した課題を解決する
ために、本発明の請求項１記載の電子機器の収容ケース
によると、空気中の湿気および水滴の双方を吸湿および
吸収することのできる吸湿吸収体を備えている。そし
て、この吸湿吸収体は、ケース体の内部周辺に配設さ
れ、ケース体内部周辺の湿気およびケース体の内部周辺
にて結露し発生する水滴の双方を吸湿および吸収する。
つまり、ケース体の内部周辺に配設される吸湿吸収体
は、ケース体内部周辺の湿気および結露水の双方を効果
的に吸着できる。このことは、ケース体の内部に収容さ
れた電子機器周辺への結露水の付着を抑制することがで
きる。In order to solve the above-mentioned problems, according to the electronic equipment housing case of the first aspect of the present invention, it is possible to absorb and absorb both humidity and water droplets in the air. Equipped with a moisture absorbent absorber. The moisture absorbing / absorbing body is arranged around the inside of the case body, and absorbs and absorbs both moisture around the inside of the case body and water droplets generated by dew condensation around the inside of the case body.
That is, the moisture absorbent absorber disposed around the inside of the case body can effectively adsorb both moisture and dew condensation water around the inside of the case body. This can prevent the condensation water from adhering to the periphery of the electronic device housed inside the case body.
【０００８】本発明の請求項２の記載によると、内部に
電子機器が収容されるケース体の所望部分に、このケー
ス体の外部からケース体の内部へ通気する部分を限定さ
せた限定通気孔を有する。そして、空気中の湿気および
水滴の双方を吸湿および吸収する吸湿吸収体を備える。
この吸湿吸収体を、限定通気孔の内部に配設して限定通
気孔を通過する空気中の湿気および限定通気孔の内部に
て結露し発生する水滴の双方を吸湿および吸水させる構
成とした。According to the second aspect of the present invention, a limited vent hole is formed in a desired portion of the case body in which the electronic device is housed, in which a portion for venting from the outside of the case body to the inside of the case body is limited. Have. A moisture absorbent absorber that absorbs and absorbs both moisture and water droplets in the air.
This moisture absorbing / absorbing body is arranged inside the limited ventilation hole to absorb and absorb both moisture in the air passing through the limited ventilation hole and water droplets generated by dew condensation inside the limited ventilation hole.
【０００９】それにより、吸湿吸収体は、限定通気孔の
内部にて湿気および水滴の双方を吸着させて、ケース体
内部への湿気および水滴の侵入を効果的に抑制する。こ
のことは、ケース体の内部に収容された電子機器周辺へ
の結露水の付着を抑制することができる。As a result, the moisture absorbing / absorbing body adsorbs both moisture and water droplets inside the limited ventilation hole, and effectively suppresses invasion of moisture and water droplets into the case body. This can prevent the condensation water from adhering to the periphery of the electronic device housed inside the case body.
【００１０】本発明の請求項３の記載によると、内部に
電子機器が収容されるケース体の所望部分に、このケー
ス体の外部からケース体の内部へ通気する部分を限定さ
せた限定通気孔を有する。そして、空気中の湿気および
水滴の双方を吸湿および吸収する吸湿吸収体を備える。
この吸湿吸収体は、ケース体の内部における限定通気孔
の開口部を塞ぐように配設されることで、ケース体の内
部への湿気および水滴の双方の侵入を吸着することで防
ぐ。また、吸湿吸収体は、開口部の近傍位置におけるケ
ース体の内壁面を覆うように配設されることで、開口部
から侵入する空気中に除去しきれなかった湿気が存在し
て開口部の近傍位置に漂う事態となっても、吸湿吸収体
がこの漂う湿気を吸湿することができる。According to the third aspect of the present invention, a limited vent hole is formed in a desired portion of the case body in which the electronic device is housed, in which a portion for venting from the outside of the case body to the inside of the case body is limited. Have. A moisture absorbent absorber that absorbs and absorbs both moisture and water droplets in the air.
The moisture absorbing / absorbing body is disposed so as to close the opening of the limited ventilation hole inside the case body, and thereby prevents both moisture and water droplets from entering the inside of the case body by adsorption. In addition, the moisture absorbent absorber is disposed so as to cover the inner wall surface of the case body in the vicinity of the opening, so that moisture that cannot be completely removed exists in the air intruding from the opening and the moisture absorption Even in the situation of drifting in the vicinity, the moisture absorbent can absorb the drifting moisture.
【００１１】本発明の請求項４の記載によると、吸湿吸
収体は、請求項２記載に示すように限定通気孔の内部に
配設されるとともに、請求項３記載に示すようにケース
体の内部における限定通気孔の開口部を塞ぎ、かつこの
開口部の近傍位置におけるケース体の内壁面を覆うよう
に配設される。According to the fourth aspect of the present invention, the moisture absorbing / absorbing body is disposed inside the limited ventilation hole as shown in the second aspect, and the moisture absorbing / absorbing body is provided in the case body as shown in the third aspect. It is arranged so as to close the opening of the limited ventilation hole inside and cover the inner wall surface of the case body in the vicinity of the opening.
【００１２】それにより、吸湿吸収体は、限定通気孔内
部にて湿気および水滴の双方を吸収する効果と、開口部
から侵入する限定通気孔内部にて除去しきれなかった湿
気がを吸収する効果とを合せ持つ。このことは、ケース
体の内部に収容された電子機器周辺への結露水の付着を
より効果的に抑制することができる。As a result, the moisture absorbing / absorbing body has the effect of absorbing both moisture and water droplets inside the limited ventilation hole, and the effect of absorbing moisture that cannot be completely removed inside the limited ventilation hole that enters through the opening. Holds together. This can more effectively suppress the attachment of dew condensation water to the periphery of the electronic device housed inside the case body.
【００１３】本発明の請求項５の記載によると、限定通
気孔は曲折されて配設される。つまり、ケース体の内部
と外部に各々開口する通気孔の開口部間を結ぶ空気の通
過経路長が長く形成される。According to the fifth aspect of the present invention, the limited ventilation hole is bent and arranged. That is, the passage path length of the air connecting between the openings of the ventilation holes that open inside and outside the case body is formed to be long.
【００１４】それにより、吸湿吸収体を配設する領域を
多く確保できるとともに、限定通気孔を通過する空気が
長く形成された限定通気孔の内部壁と接する機会を増や
すこととなる。この接触機会が増えることは、限定通気
孔の内部壁への結露水の生成を促進させる。よって、吸
湿吸収体は、空気中の湿気成分（湿気および結露水）を
吸着する効率を上げることができる。As a result, it is possible to secure a large area for disposing the moisture absorbing / absorbing body and increase the chances that the air passing through the limited ventilation hole will come into contact with the inner wall of the limited ventilation hole which is formed long. This increased contact opportunity facilitates the formation of condensed water on the internal walls of the restricted vents. Therefore, the moisture absorption absorber can improve the efficiency of adsorbing the moisture component (humidity and condensed water) in the air.
【００１５】本発明の請求項６の記載によると、吸湿吸
収体は、ケース体の内壁面を覆うように内壁面に貼着さ
れて配設される。According to the sixth aspect of the present invention, the moisture absorbent absorber is attached to the inner wall surface of the case body so as to cover the inner wall surface.
【００１６】ここで、例えばケース体が冷やされていく
過程では、ケース体の内壁面の温度がケース体内部の空
気の温度より低温状態になる。この場合には、このケー
ス体の内壁に結露水が発生し付着する。そこで、内壁面
に吸湿吸収体を貼着させることで、吸湿吸収体が断熱層
となって内壁面への結露水の生成を抑制する。つまり、
この結露水が生成されないことでケース体の内部に収納
される電子機器への垂れ落ちを抑制でき、かつ電子機器
周辺への結露水の付着を抑制することができる。そし
て、吸湿吸収体は、ケース体内部の空気との接触機会を
増やして空気中の湿気を吸湿できる。Here, for example, in the process of cooling the case body, the temperature of the inner wall surface of the case body becomes lower than the temperature of the air inside the case body. In this case, dew condensation water is generated and adheres to the inner wall of the case body. Therefore, by adhering the moisture absorbing / absorbing body to the inner wall surface, the moisture absorbing / absorbing body serves as a heat insulating layer to suppress generation of dew condensation water on the inner wall surface. That is,
Since this dew condensation water is not generated, it is possible to prevent the dew condensation water from dropping onto the electronic device housed inside the case body, and to suppress the adhesion of the dew condensation water to the periphery of the electronic device. The moisture absorber can increase the chance of contact with the air inside the case body to absorb moisture in the air.
【００１７】本発明の請求項７の記載によると、空気を
通過させて水滴を通過させない防水フィルタを有し、こ
の防水フィルタをケース体の内側における限定通気孔の
開口部を塞ぐように配設させた。According to the seventh aspect of the present invention, there is provided a waterproof filter which allows air to pass but does not allow water droplets to pass, and the waterproof filter is arranged so as to close the opening of the limited ventilation hole inside the case body. Let
【００１８】それにより、例えば吸湿吸収体が水分を多
量に吸収して水分飽和の状態となり吸湿吸収体の下方に
水滴が垂れ下がる状態となっても、防水フィルタがこの
水の垂れ下がりを抑制することができる。As a result, even if, for example, the moisture absorbent absorbs a large amount of water and becomes saturated with water and drops of water drop below the moisture absorbent, the waterproof filter can prevent the water from hanging down. it can.
【００１９】本発明の請求項８の記載によると、熱伝導
率の低い断熱部材を有し、この断熱部材をケース体の内
壁面と吸湿吸収体の間に介在させて配設させた。According to the eighth aspect of the present invention, there is provided a heat insulating member having a low heat conductivity, and the heat insulating member is disposed between the inner wall surface of the case body and the moisture absorbent.
【００２０】ここで、例えばケース体が冷やされていく
過程では、ケース体の内壁面の温度がケース体内部の空
気の温度より低温状態になる。この場合には、このケー
ス体の内壁に結露水が発生し付着する。そこで、ケース
体の内壁面と吸湿吸収体の間に熱伝導率の低い断熱部材
を介在させて配設させれば吸湿吸収体に加え断熱部材が
断熱層となって内壁面への結露水の生成を抑制する。つ
まり、この結露水が生成されないことで、ケース体の内
部に収納される電子機器への垂れ落ちを抑制でき、電子
機器周辺への結露水の付着を抑制することができる。Here, for example, in the process of cooling the case body, the temperature of the inner wall surface of the case body becomes lower than the temperature of the air inside the case body. In this case, dew condensation water is generated and adheres to the inner wall of the case body. Therefore, if a heat insulating member having a low heat conductivity is interposed between the inner wall surface of the case body and the moisture absorbing / absorbing body, the heat insulating member serves as a heat insulating layer in addition to the moisture absorbing / absorbing body to form dew condensation water on the inner wall surface. Suppress generation. That is, since the dew condensation water is not generated, it is possible to suppress the dropping of the dew condensation water to the electronic device housed inside the case body, and to suppress the attachment of the dew condensation water to the periphery of the electronic device.
【００２１】本発明の請求項９の記載によると、熱伝導
性の高い熱伝導部材と、ケース体の周辺位置に蓄熱容量
の高い蓄熱部材とを備え、この熱伝導部材をケース体と
蓄熱部材の双方と接続させて配設させる。According to claim 9 of the present invention, a heat conducting member having a high heat conductivity and a heat accumulating member having a high heat storage capacity are provided around the case body, and the heat conducting member is used for the case body and the heat accumulating member. Both are connected and arranged.
【００２２】それにより、例えばケース体が冷やされて
いく過程において、熱伝導部材を介して蓄熱部材と接続
されているので、蓄熱部材よりケース体に熱が伝導され
る。つまり、ケース体の高温から低温状態への移行速度
を徐々に変化させる。このケース体温度の緩やかな変化
は、ケース体の内壁面の温度とケース体内部の空気との
温度差を少なくさせ、ケース体の内壁に結露水が発生す
るのを抑制させる（露点温度になりにくくさせる）。Thus, for example, in the process of cooling the case body, the heat storage member is connected to the heat storage member, so that the heat is conducted from the heat storage member to the case body. That is, the transition speed from the high temperature to the low temperature state of the case body is gradually changed. This gradual change of the case body temperature reduces the temperature difference between the temperature of the inner wall surface of the case body and the air inside the case body, and suppresses the generation of dew condensation water on the inner wall of the case body (the dew point temperature becomes Make it harder).
【００２３】[0023]
【発明の実施の形態】以下、本発明の複数の実施形態を
図に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of embodiments of the present invention will be described below with reference to the drawings.
【００２４】（第１実施形態）本発明の第１実施形態で
ある車載用電子機器の収容ケースを、図１に示す断面図
を用いて説明する。なお、以下説明する車載用電子機器
の収容ケースは、例えば車両のエンジンルーム内に搭載
され、内部に電子機器としての電子部品１０が実装され
たプリント基板１１を収容して構成されるものである。
車両のエンジンルーム内周辺は、温度、湿度ともにその
変化幅が大きく、また温度、湿度の急変さが激しい環境
である。つまり、収容ケースとしてのケース体１内で結
露水が発生しやすい状況である。この生成される結露水
がケース体１内部の電子部品１０等に付着すると、電子
機器の動作不良等に至ることがある。そこで、本発明
は、ケース体１内の湿気および結露水の双方を効果的に
吸着してケース体１内部に配設されるプリント基板１１
および電子部品１０の表面への結露水の付着を抑制でき
る技術に関する。(First Embodiment) A housing case for a vehicle-mounted electronic device according to a first embodiment of the present invention will be described with reference to the sectional view shown in FIG. The housing case of the on-vehicle electronic device described below is mounted, for example, in the engine room of the vehicle and houses the printed circuit board 11 on which the electronic component 10 as the electronic device is mounted. .
Around the inside of the engine room of the vehicle, both temperature and humidity change greatly and the temperature and humidity change rapidly. That is, dew condensation water is likely to be generated in the case body 1 as the storage case. If the generated condensed water adheres to the electronic component 10 and the like inside the case body 1, it may lead to malfunction of the electronic device. Therefore, according to the present invention, the printed circuit board 11 disposed inside the case body 1 by effectively adsorbing both moisture and dew condensation water in the case body 1.
Also, the present invention relates to a technique capable of suppressing the attachment of dew condensation water to the surface of the electronic component 10.
【００２５】ケース体１は、アルミニウム等の金属製か
らなり、ケース本体１ａとケースカバー１ｂとから構成
される。そして、両者１ａ、１ｂ間には、パッキン２が
介在されて組付けられケース体１内外部間の空気の導通
を遮断する構成である。なお、１２はプリント基板１１
上に実装される電子部品１０等と図示しない外部機器と
の間にて信号の入出力を行うコネクタである。また、コ
ネクタ１２とケース本体１ａとの間の気密は保たれてケ
ース体１外部よりの湿気をケース体１内部に侵入させな
い構成である。The case body 1 is made of metal such as aluminum and is composed of a case body 1a and a case cover 1b. A packing 2 is interposed between the two 1a and 1b to be assembled, and the air conduction between the inside and outside of the case body 1 is cut off. In addition, 12 is a printed circuit board 11.
It is a connector that inputs and outputs signals between the electronic component 10 and the like mounted above and an external device (not shown). Further, the airtightness between the connector 12 and the case body 1a is maintained so that moisture from the outside of the case body 1 does not enter the inside of the case body 1.
【００２６】ケースカバー１ｂには、ケース体１の外部
からケース体１の内部へ通気する部分を限定させた限定
通気孔３を有する。この限定通気孔３は、ケース体１の
内外圧力差を調整する機能を果たす。なお、ケース体１
の外部における限定通気孔３の開口部３ａには、この開
口部３ａを覆うことでケース体１外部から開口部３ａへ
の被水を防ぎ、かつ通気させることのできる被水防止キ
ャップ４が設けられる。つまり、ケース体１に限定通気
孔３を設けることで、ケース体１の周辺温度変化時に図
１中矢印Ａの経路のみを通じてケース体１の内外部間を
空気が行き来する。The case cover 1b has a limited ventilation hole 3 which limits a portion of the case body 1 from the outside to the inside of the case body 1. The limited ventilation hole 3 has a function of adjusting the pressure difference between the inside and the outside of the case body 1. The case body 1
The opening 3a of the limited ventilation hole 3 outside the body is provided with a water-prevention cap 4 which can cover the opening 3a to prevent water from being leaked from the outside of the case body 1 and to ventilate the same. To be That is, by providing the limited ventilation holes 3 in the case body 1, when the ambient temperature of the case body 1 changes, the air flows between the inside and outside of the case body 1 only through the path indicated by the arrow A in FIG.
【００２７】限定通気孔３の内部の空気通路には、空気
中の湿気および水滴の双方を吸湿および吸収する機能を
有する吸湿吸収体５が配設される。具体的には、吸湿吸
収体５を限定通気孔３と同形状の円柱形状とし、少なく
とも１ヶ所は限定通気孔３の全断面を吸湿吸収体５が塞
ぐように配設させる。これにより、ケース体１の外部よ
りケース体１内部へ湿気を含んだ空気が通過する際、こ
の空気が吸湿吸収体５を素通りして通過することを防
ぐ。A moisture absorption absorber 5 having a function of absorbing and absorbing both moisture and water droplets in the air is arranged in the air passage inside the limited ventilation hole 3. Specifically, the moisture absorbing / absorbing body 5 is formed into a columnar shape having the same shape as the limited ventilation hole 3, and the moisture absorbing / absorbing body 5 is arranged so as to close the entire cross section of the limited ventilation hole 3 at least at one place. Thereby, when the air containing moisture passes from the outside of the case body 1 into the inside of the case body 1, the air is prevented from passing through the moisture absorbing / absorbing body 5 as it is.
【００２８】なお、限定通気孔３は、図１に示した形態
以外に、図２に示す限定通気孔３Ａとしてもよい。図２
は、図１に示す限定通気孔３の他の例を示す部分断面図
である。この限定通気孔３Ａは、曲折されて配設され
る。詳細には、螺旋状に旋回する通路を有して、ケース
体１の内部と外部に各々開口する通気孔の開口部３ａ、
３ｂ間を結ぶ空気の通過経路長を長く形成させる。それ
により、吸湿吸収体５を配設する領域を多く確保できる
とともに、限定通気孔３Ａを通過する空気が長く形成さ
れた限定通気孔３Ａの内部壁と接する機会を増やすこと
となる。この接触機会が増えることは、限定通気孔３Ａ
の内部壁への結露水の生成を促進させる。よって、吸湿
吸収体５は、空気中の湿気成分（湿気および結露水）を
吸着する効率を上げることができる。The limited ventilation hole 3 may be the limited ventilation hole 3A shown in FIG. 2 in addition to the configuration shown in FIG. Figure 2
FIG. 4 is a partial cross-sectional view showing another example of the limited ventilation hole 3 shown in FIG. 1. The limited ventilation hole 3A is bent and arranged. In detail, it has an opening 3a of a ventilation hole which has a spirally swirling passage and opens inside and outside the case body 1,
The length of the passage path of air connecting between 3b is made long. As a result, a large area for arranging the moisture absorbing / absorbing body 5 can be secured, and the chances that the air passing through the limited ventilation hole 3A will come into contact with the inner wall of the limited ventilation hole 3A formed long. This increase in contact opportunities means that the limited ventilation holes 3A
Promotes the formation of condensed water on the inner wall of the. Therefore, the moisture absorption absorber 5 can improve the efficiency of adsorbing the moisture component (humidity and condensed water) in the air.
【００２９】この吸湿吸収体５は、ポリアクリル酸ナト
リウム塩を主成分とするポリマー体からなり、例えばこ
のポリマー体を繊維の集合体状に加工したものである
（カネボウ合繊株式会社製のベルオアシス繊維をコアと
したものを利用）。吸湿吸収体５の吸湿率特性は、図３
に示すように実開平７−８４７１に開示されている技術
にて用いられ、同図３中に示すＡ型シリカゲルおよびコ
ットンよりも吸湿率に優れるＢ型シリカゲルに対して２
倍量の吸湿性能を有する。この吸湿吸収体５の吸湿性能
を特性線（図３中のイ部分）に示す。また、吸湿吸収体
５の吸水性能としては、乾燥状態時の吸湿吸収体５自重
の約８０倍量の水滴を吸水できる。この優れた吸湿およ
び吸水の双方の機能を備えた吸湿吸収体５に着目し、こ
の吸湿吸収体５を電子機器の収容ケース（ケース体１）
の内部周辺としての限定通気孔３の内部に配設させた。
なお、一旦吸着した水分は、ケース体１内空気の相対湿
度が低下すると速やかに放湿し、次回以降の吸湿、吸水
が要求される事態に対応する。The moisture absorbent 5 is made of a polymer having polyacrylic acid sodium salt as a main component, and for example, the polymer is processed into an aggregate of fibers (Belle Oasis manufactured by Kanebo Synthetic Fiber Co., Ltd.). Use the one with the fiber core). The moisture absorption characteristics of the moisture absorbent absorber 5 are shown in FIG.
As shown in FIG. 2, 2 is used for the type B silica gel which is used in the technique disclosed in Japanese Utility Model Publication No. 7-8471 and has a higher moisture absorption rate than the type A silica gel and cotton shown in FIG.
It has double the moisture absorption performance. The characteristic line (a portion in FIG. 3) shows the moisture absorption performance of the moisture absorption absorber 5. As for the water absorption performance of the moisture absorbing / absorbing body 5, it is possible to absorb about 80 times as many water droplets as the weight of the moisture absorbing / absorbing body 5 in the dry state. Focusing on the moisture absorbent 5 having both excellent moisture absorbing and water absorbing functions, the moisture absorbent 5 is used as a housing case (case body 1) of an electronic device.
It was disposed inside the limited ventilation hole 3 as the inner periphery of the.
The once adsorbed moisture is quickly released when the relative humidity of the air in the case body 1 is reduced, which corresponds to a situation in which moisture absorption and water absorption are required after the next time.
【００３０】このように、限定通気孔３の内部に吸湿吸
収体５を配設することで、限定通気孔３を通過する空気
中の湿気、および限定通気孔３の内部にて結露し発生す
る水滴の双方を吸湿および吸水できる。それにより、吸
湿吸収体５は、限定通気孔３の内部にて湿気および水滴
の双方を吸着させて、ケース体１内部への湿気および水
滴の侵入を効果的に抑制する。このことは、ケース体１
の内部に収容された電子機器周辺への結露水の付着を抑
制する。As described above, by disposing the moisture absorbing / absorbing body 5 inside the limited ventilation hole 3, moisture in the air passing through the limited ventilation hole 3 and dew condensation inside the limited ventilation hole 3 are generated. It can absorb and absorb both water droplets. As a result, the moisture absorbing / absorbing body 5 adsorbs both moisture and water droplets inside the limited ventilation hole 3 and effectively suppresses invasion of moisture and water droplets into the case body 1. This is the case body 1
Suppresses the attachment of dew condensation water around the electronic equipment housed inside.
【００３１】ケース体１の内側における限定通気孔３の
開口部３ｂを塞ぐように、防水フィルタ６が配設され
る。この防水フィルタ６は、空気を通過させて水滴を通
過させない機能を有する。よって、例えば限定通気孔３
の内部に配設された吸湿吸収体５が水分を多量に吸収し
て水分飽和の状態となり吸湿吸収体５の下方に水滴が垂
れ下がる状態となっても、防水フィルタ６がこの水の垂
れ下がりを抑制することができる。A waterproof filter 6 is provided so as to close the opening 3b of the limited ventilation hole 3 inside the case body 1. The waterproof filter 6 has a function of allowing air to pass therethrough and preventing water droplets from passing therethrough. Therefore, for example, the limited ventilation hole 3
Even if the moisture absorbing body 5 disposed inside the water absorbing body absorbs a large amount of moisture and becomes saturated with water, and the water drops hang down below the moisture absorbing body 5, the waterproof filter 6 suppresses this water dripping. can do.
【００３２】吸湿吸収体５と同素材の吸湿吸収体７を、
ケース体の内部における限定通気孔３の開口部３ｂを塞
ぐように配設する。詳細には、吸湿吸収体７はシート状
に形成され、防水フィルタ６と重ね合わせるように防水
フィルタ６の上部に吸湿吸収体７を貼り合せる。この吸
湿吸収体７は、ケース体１の内部への湿気および水滴の
双方の侵入を吸着することで防ぐ。また、吸湿吸収体７
は、開口部３ｂの近傍位置におけるケース体１の内壁面
１ｂｂを覆うように配設されることで、開口部３ｂから
侵入する空気中に除去しきれなかった湿気が存在して開
口部３ｂの近傍位置に漂う事態となっても、吸湿吸収体
７がこの漂う湿気を吸湿する。The moisture absorbing / absorbing body 7 made of the same material as the moisture absorbing / absorbing body 5 is
It is arranged so as to close the opening 3b of the limited ventilation hole 3 inside the case body. In detail, the moisture absorbing / absorbing body 7 is formed in a sheet shape, and the moisture absorbing / absorbing body 7 is attached to the upper part of the waterproof filter 6 so as to be overlapped with the waterproof filter 6. The moisture absorber 7 prevents both moisture and water droplets from entering the inside of the case body 1 by absorbing them. Also, the moisture absorbent absorber 7
Is disposed so as to cover the inner wall surface 1bb of the case body 1 in the vicinity of the opening 3b, so that there is moisture that cannot be completely removed in the air intruding through the opening 3b, and thus the opening 3b is not covered. Even in the situation of drifting in the vicinity, the moisture absorbent absorber 7 absorbs this drifting moisture.
【００３３】更に、吸湿吸収体５と同素材の吸湿吸収体
８を、ケース体１の内部周辺としてのケース体１の内部
に貼着させる。詳細には、吸湿吸収体８はシート状に形
成され、図１中に示すプリント基板１１の下部位置のケ
ース本体部１ａの内壁面に貼着させる。この吸湿吸収体
８は、ケース体１の内部に存在する湿気およびケース本
体部１ａの内壁面等で発生する水滴の双方を吸湿および
吸水する。Further, the moisture absorbing / absorbing body 8 made of the same material as the moisture absorbing / absorbing body 5 is attached to the inside of the case body 1 as the inner periphery of the case body 1. In detail, the moisture absorbent absorber 8 is formed in a sheet shape, and is attached to the inner wall surface of the case main body portion 1a at the lower position of the printed circuit board 11 shown in FIG. The moisture absorber 8 absorbs and absorbs both moisture existing inside the case body 1 and water droplets generated on the inner wall surface of the case body 1a.
【００３４】ケース体１の内部周辺に配設される吸湿吸
収体５、７、８の総量は、ケース体１の内部に包含し得
る最大量の水分（湿および水滴）を吸着できる分量が配
設される。この最大量の水分換算は、例えばケース体１
がエンジンルームに配設される場合を想定すると、上限
として１００℃１００％相対湿度での飽和水蒸気量（５
８８．９ｇ／ｍ2）と下限としての−３０℃での飽和水
蒸気量（０．２ｇ／ｍ2）との差分を吸着できるように
設定される。また、ケース体１が車室内に配設される場
合を想定すると、上限として８０℃８５％相対湿度での
飽和水蒸気量（２９７．６ｇ／ｍ2）と下限としての−
３０℃での飽和水蒸気量（０．２ｇ／ｍ2）との差分を
吸着できるように設定される。The total amount of the moisture absorbing / absorbing bodies 5, 7, 8 arranged around the inside of the case body 1 is such that the maximum amount of water (wet and water droplets) that can be contained in the case body 1 can be absorbed. Set up. This maximum amount of water can be converted into, for example, the case 1
Assuming that the engine is installed in the engine room, the upper limit of the saturated water vapor amount at 100 ° C and 100% relative humidity (5
It is set to allow adsorb difference 88.9 g / m 2) and saturated water vapor at -30 ° C. as the lower limit and (0.2g / m 2). Assuming that the case body 1 is disposed in the vehicle compartment, the upper limit is saturated water vapor amount at 80 ° C. and 85% relative humidity (297.6 g / m 2 ), and the lower limit is −−.
It is set so that the difference from the saturated water vapor amount (0.2 g / m 2 ) at 30 ° C. can be absorbed.
【００３５】ケース体１の内部における結露の発生は、
大別して２つのパターンがある。一方は、ケース体１が
高温度状態であり周囲より過渡的に冷やされて低温度状
態へと温度変化する場合である。この場合には、ケース
体１自体が先行して冷やされ、ケース体１の内部空気と
の温度差が発生することから、ケース体１内の湿度に応
じて露点温度が決定されてケース体１の内壁部にて結露
する。また、他方は、ケース体１が低温度状態であり周
囲より過渡的に暖められて高温度状態へと温度変化する
場合である。この場合には、ケース体１に次いでケース
体１の内部空気が暖められるが、プリント基板１１およ
びプリント基板１１上に実装される電子部品１０の表面
温度の温度上昇が遅れ、プリント基板１１および電子部
品１０の表面温度の温度とケース体１の内部空気との温
度差が発生することから、ケース体内の湿度に応じて露
点温度が決定されてプリント基板１１および電子部品１
０の表面にて結露する。The occurrence of dew condensation inside the case body 1
There are roughly two patterns. On the other hand, the case body 1 is in a high temperature state and is transiently cooled from the surroundings to change its temperature to a low temperature state. In this case, since the case body 1 itself is cooled in advance and a temperature difference with the internal air of the case body 1 occurs, the dew point temperature is determined according to the humidity inside the case body 1 and the case body 1 is cooled. Condensation forms on the inner wall of the. On the other hand, the case body 1 is in a low temperature state and is transiently warmed from the surroundings to change its temperature to a high temperature state. In this case, the internal air of the case body 1 is heated next to the case body 1, but the temperature rise of the surface temperature of the printed circuit board 11 and the electronic component 10 mounted on the printed circuit board 11 is delayed, and the printed circuit board 11 and the electronic parts are Since a temperature difference between the surface temperature of the component 10 and the internal air of the case body 1 is generated, the dew point temperature is determined according to the humidity in the case body, and the printed circuit board 11 and the electronic component 1 are
Condensation on the surface of 0.
【００３６】しかし、ケース体１の内部周辺に吸湿吸収
体５、７、８を配設させたので、ケース体１の内部周辺
の湿気および結露水の双方を効果的に吸収除去してケー
ス体１の内部空気中の湿気を低減させ、ケース体１内部
に配設される電子機器周辺への結露水の付着を抑制す
る。However, since the moisture absorbing / absorbing bodies 5, 7 and 8 are arranged around the inside of the case body 1, both the moisture and condensed water around the inside of the case body 1 are effectively absorbed and removed to effectively remove the case body. The moisture in the inner air of the case 1 is reduced, and the adhesion of the dew condensation water to the periphery of the electronic device arranged inside the case body 1 is suppressed.
【００３７】なお、本発明の実施にあたり、金属製のケ
ース体１としたが、樹脂製のケース体であっても、温度
および湿度の条件によりケース内壁に結露付着し、本発
明の吸湿および吸水の効果を発揮できる。In the practice of the present invention, the case 1 made of metal is used. However, even if the case is made of resin, dew condensation adheres to the inner wall of the case due to temperature and humidity conditions, and the moisture absorption and water absorption of the present invention are carried out. The effect of can be exhibited.
【００３８】また、本発明の実施にあたり、吸湿吸収体
５、７、８全てをケース体１の内部周辺に配設させた
が、吸湿吸収体５、７、８のうちのいずれか１つ、ある
いはこれら吸湿吸収体５、７、８を適宜組合せて用いて
もよい。Further, in carrying out the present invention, all of the moisture absorption absorbers 5, 7, 8 are arranged around the inside of the case body 1, but any one of the moisture absorption absorbers 5, 7, 8 is Alternatively, these moisture absorbing / absorbing bodies 5, 7, and 8 may be appropriately combined and used.
【００３９】また更に、本発明の実施にあたり、防水フ
ィルタ６は必須ではなく、必要に応じて適宜選択使用さ
れる。Furthermore, in carrying out the present invention, the waterproof filter 6 is not essential and may be appropriately selected and used as needed.
【００４０】（第２実施形態）本発明の第２実施形態で
ある車載用電子機器の収容ケースを、図４に示す断面図
を用いて説明する。第１実施形態と実質的に同一構成部
品に同一符号を付し、説明を省略する。なお、本実施形
態の車載用電子機器の収容ケースとしてのケース体１Ａ
は、ケース体１Ａの内側と外側とを気密にさせずに隙間
（通気孔）２０ａ、２０ｂを有する。なお、隙間２０ａ
は、ケース本体１Ａａとケースカバー１Ａｂの両者１Ａ
ａ、１Ａｂ間を気密にさせずにケース体１Ａ内外部間の
空気が導通する構成である。また、隙間２０ｂは、ケー
ス本体１Ａａとコネクタ１２間を気密にさせずに形成さ
れる。このケース体１Ａにおいて、吸湿吸収体がケース
体１Ａの内壁面を覆うように内壁面に貼着されて配設さ
れる。(Second Embodiment) A housing case for a vehicle-mounted electronic device according to a second embodiment of the present invention will be described with reference to the sectional view shown in FIG. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In addition, the case body 1A as a housing case of the in-vehicle electronic device of the present embodiment
Has gaps (ventilation holes) 20a and 20b without making the inside and outside of the case body 1A airtight. Note that the gap 20a
Is both the case body 1Aa and the case cover 1Ab.
It is configured such that air is conducted between the inside and outside of the case body 1A without airtightly connecting a and 1Ab. Further, the gap 20b is formed without making the case body 1Aa and the connector 12 airtight. In this case body 1A, a moisture absorbing / absorbing body is arranged by being attached to the inner wall surface of the case body 1A so as to cover the inner wall surface.
【００４１】ここで、例えばケース体１Ａが冷やされて
いく過程では、第１実施形態にて説明したようにケース
体１Ａの内壁に結露水が発生し付着する。そこで、ケー
ス体１Ａの内壁面に吸湿吸収体８Ａ、８Ｂを貼着させる
ことで、吸湿吸収体８Ａ、８Ｂが断熱層となって内壁面
への結露水の生成を抑制する。この結露水が生成されな
いことで、ケース体１Ａの内部に収納されるプリント基
板１１の表面等への垂れ落ちを抑制でき、かつプリント
基板１１の表面等への結露水の付着を抑制することがで
きる。そして、吸湿吸収体は、ケース体１Ａ内部の空気
との接触機会を増やして空気中の湿気を吸湿できる。Here, in the process of cooling the case body 1A, for example, dew condensation water is generated and adheres to the inner wall of the case body 1A as described in the first embodiment. Therefore, by adhering the moisture absorbing / absorbing bodies 8A, 8B to the inner wall surface of the case body 1A, the moisture absorbing / absorbing bodies 8A, 8B serve as a heat insulating layer to suppress generation of dew condensation water on the inner wall surface. Since this condensed water is not generated, it is possible to prevent the condensed water from dropping onto the surface or the like of the printed circuit board 11 housed inside the case body 1A and to prevent the condensed water from adhering to the surface or the like of the printed circuit board 11. it can. The moisture absorber can increase the chance of contact with the air inside the case body 1A to absorb moisture in the air.
【００４２】（第３実施形態）本発明の第３実施形態で
ある車載用電子機器の収容ケースを、図５に示す断面図
を用いて説明する。本実施形態での収容ケースとしての
ケース体１Ｂは、第２実施形態に示したケース体１Ａに
対して熱伝導率の低い断熱部材３０Ａ、３０Ｂを有し、
この断熱部材３０Ａ、３０Ｂをケース体１の内壁面と吸
湿吸収体８Ａ、８Ｂの間に介在させて配設させた点が異
なる。なお、第２実施形態と実質的に同一構成部品に同
一符号を付し、説明を省略する。(Third Embodiment) A housing case for an on-vehicle electronic device according to a third embodiment of the present invention will be described with reference to a sectional view shown in FIG. A case body 1B as a housing case in the present embodiment has heat insulating members 30A and 30B having a lower thermal conductivity than the case body 1A shown in the second embodiment,
The difference is that the heat insulating members 30A and 30B are arranged so as to be interposed between the inner wall surface of the case body 1 and the moisture absorbing and absorbing bodies 8A and 8B. It should be noted that substantially the same components as those of the second embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００４３】断熱部材３０Ａは、例えば熱伝導率の低い
樹脂材によりシート状に薄く形成され、ケース本体１Ａ
ａと吸湿吸収体８Ａの間に介在される。つまり、ケース
本体１Ａａの内壁面に断熱部材３０Ａを貼着させたの
ち、断熱部材３０Ａの上部面に断熱部材３０Ａと同サイ
ズの吸湿吸収体８Ａを貼着させる。また、断熱部材３０
Ｂも断熱部材３０Ａと同要領にてケースカバー１Ａｂの
内壁面に貼着される。The heat insulating member 30A is made of a resin material having a low thermal conductivity, for example, and is thinly formed into a sheet shape.
It is interposed between a and the moisture absorption absorber 8A. That is, after attaching the heat insulating member 30A to the inner wall surface of the case body 1Aa, the moisture absorbing / absorbing body 8A having the same size as the heat insulating member 30A is attached to the upper surface of the heat insulating member 30A. Also, the heat insulating member 30
B is also attached to the inner wall surface of the case cover 1Ab in the same manner as the heat insulating member 30A.
【００４４】ここで、例えばケース体１Ｂが冷やされて
いく過程では、第１実施形態にて説明したようにケース
体１Ｂの内壁に結露水が発生し付着する。そこで、ケー
ス体１Ｂの内壁面と吸湿吸収体８Ａ、８Ｂの間に熱伝導
率の低い断熱部材３０Ａ、３０Ｂを介在させて配設させ
れば吸湿吸収体８Ａ、８Ｂに加え断熱部材３０Ａ、３０
Ｂが断熱層となって内壁面への結露水の生成を抑制す
る。この結露水が生成されないことで、ケース体１Ｂの
内部に収納されるプリント基板１１の表面等への垂れ落
ちを抑制でき、プリント基板１１の表面等への結露水の
付着を抑制することができる。Here, in the process of cooling the case body 1B, for example, dew condensation water is generated and adheres to the inner wall of the case body 1B as described in the first embodiment. Therefore, by disposing heat insulating members 30A and 30B having a low thermal conductivity between the inner wall surface of the case body 1B and the moisture absorbing and absorbing members 8A and 8B, the heat insulating members 30A and 30B are added to the moisture absorbing and absorbing members 8A and 8B.
B serves as a heat insulating layer and suppresses the generation of dew condensation water on the inner wall surface. Since the condensed water is not generated, it is possible to suppress the dropping of the condensed water onto the surface or the like of the printed circuit board 11 housed inside the case body 1B, and to suppress the adhesion of the condensed water to the surface or the like of the printed circuit board 11. .
【００４５】（第４実施形態）本発明の第４実施形態で
ある車載用電子機器の収容ケースを、図６に示す部分断
面図を用いて説明する。本実施形態での収容ケースとし
てのケース体１は、第１実施形態に示したケース体１に
対して熱伝導性の高い熱伝導部材と、ケース体１の周辺
位置に蓄熱容量の高い蓄熱部材とを備え、この熱伝導部
材をケース体１と蓄熱部材の双方と接続させて配設させ
た点が異なる。なお、第１実施形態と実質的に同一構成
部品に同一符号を付し、説明を省略する。(Fourth Embodiment) A housing case for an on-vehicle electronic device according to a fourth embodiment of the present invention will be described with reference to a partial sectional view shown in FIG. The case body 1 as a housing case in the present embodiment includes a heat conductive member having high heat conductivity with respect to the case body 1 shown in the first embodiment, and a heat storage member having a high heat storage capacity in a peripheral position of the case body 1. And the heat conducting member is provided so as to be connected to both the case body 1 and the heat storage member. It should be noted that substantially the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００４６】熱伝導部材４０Ａ、４０Ｂは、例えば熱伝
導性の高い金属製の帯形状の板材または金属製細線の網
目状帯体より形成され、ケース体１と蓄熱部材５０の双
方と接続させて配設させる。詳細には、ケース本体１ａ
と蓄熱部材５０とを接続させる熱伝導部材４０Ａ、およ
びケースカバー１ｂと蓄熱部材５０とを接続させる熱伝
導部材４０Ｂを備える。また、蓄熱部材５０は、ケース
体１の周辺位置に配置される例えば蓄熱容量の高い金属
製の車両構造体である。The heat-conducting members 40A and 40B are formed of, for example, a metal strip-shaped plate material having a high heat conductivity or a mesh-shaped strip of metal fine wires, and are connected to both the case body 1 and the heat storage member 50. Arrange. Specifically, the case body 1a
And a heat conduction member 40A for connecting the heat storage member 50, and a heat conduction member 40B for connecting the case cover 1b and the heat storage member 50. The heat storage member 50 is, for example, a metal vehicle structure that is arranged at a peripheral position of the case body 1 and has a high heat storage capacity.
【００４７】このように、熱伝導部材４０Ａ、４０Ｂを
介在させてケース体１と蓄熱部材５０間を熱が伝導する
ようにすることで、例えばケース体が冷やされていく過
程において、蓄熱部材５０よりケース体１に熱が伝導さ
れる。つまり、ケース体１の高温から低温状態への移行
速度を徐々に変化させる。このケース体１温度の緩やか
な変化は、ケース体１の内壁面の温度とケース体１内部
の空気との温度差を少なくさせ、ケース体１の内壁に結
露水が発生するのを抑制させる（露点温度になりにくく
させる）。As described above, the heat conduction members 40A and 40B are interposed so that the heat is conducted between the case body 1 and the heat storage member 50, so that the heat storage member 50 is cooled in the process of cooling the case body. Heat is conducted to the case body 1 more. That is, the transition speed from the high temperature to the low temperature state of the case body 1 is gradually changed. This gradual change in the temperature of the case body 1 reduces the temperature difference between the temperature of the inner wall surface of the case body 1 and the air inside the case body 1, and suppresses the generation of condensed water on the inner wall of the case body 1 ( Makes it hard to reach the dew point temperature).
【００４８】なお、本発明の実施にあたり、熱伝導部材
４０Ａ、４０Ｂは、いずれか一方が用いられてもよい。In carrying out the present invention, either one of the heat conducting members 40A and 40B may be used.
【図１】本発明の第１実施形態である車載用電子機器の
収容ケースを示す断面図である。FIG. 1 is a sectional view showing a housing case of a vehicle-mounted electronic device according to a first embodiment of the present invention.
【図２】図１に示す限定通気孔の他の例を示す部分断面
図である。FIG. 2 is a partial cross-sectional view showing another example of the limited ventilation hole shown in FIG.
【図３】吸湿吸収体の吸湿率を示す特性図である。FIG. 3 is a characteristic diagram showing a moisture absorption rate of a moisture absorbent absorber.
【図４】本発明の第２実施形態である車載用電子機器の
収容ケースを示す断面図である。FIG. 4 is a sectional view showing a housing case of a vehicle-mounted electronic device according to a second embodiment of the present invention.
【図５】本発明の第３実施形態である車載用電子機器の
収容ケースを示す断面図である。FIG. 5 is a sectional view showing a housing case of a vehicle-mounted electronic device according to a third embodiment of the present invention.
【図６】本発明の第４実施形態である車載用電子機器の
収容ケースを示す部分断面図である。FIG. 6 is a partial cross-sectional view showing a housing case of a vehicle-mounted electronic device according to a fourth embodiment of the present invention.
１、１Ａ、１Ｂ ケース体
１ｂｂ （開口部３ｂの近傍位置におけるケース体１
の）内壁面
３、３Ａ 限定通気孔（通気孔の一部を構成）
３ａ、３ｂ 開口部
５、７、８ 吸湿吸収体
６ 防水フィルタ
２０ａ、２０ｂ 隙間（通気孔の一部を構成）
３０Ａ、３０Ｂ 断熱部材
４０Ａ、４０Ｂ 熱伝導部材
５０ 蓄熱部材1, 1A, 1B Case body 1bb (Case body 1 in the vicinity of the opening 3b
Inner wall surface 3, 3A limited ventilation hole (constituting a part of ventilation hole) 3a, 3b openings 5, 7, 8 moisture absorption absorber 6 waterproof filter 20a, 20b gap (constituting a part of ventilation hole) 30A, 30B heat insulation member 40A, 40B heat conduction member 50 heat storage member
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０５Ｋ 7/20 Ｈ０５Ｋ 7/20 Ｋ Ｘ // Ｂ６５Ｄ 81/26 Ｂ６５Ｄ 81/26 Ｎ Ｆターム(参考） 3E067 AA11 AB31 BA01A FA01 FC01 GD10 4D052 AA09 CA04 FA02 FA04 HA49 4E360 AB02 AB12 AB33 AB34 BD03 BD05 EA03 EA18 EB04 ED17 ED27 FA08 GA24 GA29 GB93 GB94 GC08 5E322 BA01 BA03 BA05 BC01 EA03 FA02 FA04 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) H05K 7/20 H05K 7/20 K X // B65D 81/26 B65D 81/26 N F term (reference) 3E067 AA11 AB31 BA01A FA01 FC01 GD10 4D052 AA09 CA04 FA02 FA04 HA49 4E360 AB02 AB12 AB33 AB34 BD03 BD05 EA03 EA18 EB04 ED17 ED27 FA08 GA24 GA29 GB93 GB94 GC08 5E322 BA01 BA03 BA05 BC01 EA03 FA02 FA04
Claims (9)
と、該ケース体の外部と内部間とを通気させる通気孔と
を有する車載用電子機器の収容ケースにおいて、 空気中の湿気および水滴の双方を吸湿および吸収する吸
湿吸収体を備え、 前記吸湿吸収体は、前記ケース体の内部周辺に配設さ
れ、前記ケース体内部の湿気および前記ケース体の内部
周辺にて結露し発生する水滴の双方を吸湿および吸収す
ることを特徴とする車載用電子機器の収容ケース。1. A housing case for an on-vehicle electronic device, comprising: a case body in which an electronic device is housed; and a vent hole for ventilating between the outside and the inside of the case body. A moisture absorbent absorber that absorbs and absorbs both of them is provided.The moisture absorbent absorber is disposed around the inside of the case body, and moisture of the inside of the case body and water droplets generated by dew condensation around the inside of the case body are generated. An in-vehicle electronic device housing case that absorbs and absorbs both.
と、該ケース体の所望部分に前記ケース体の外部から前
記ケース体の内部へ通気する部分を限定させた限定通気
孔とを有する車載用電子機器の収容ケースにおいて、 空気中の湿気および水滴の双方を吸湿および吸収する吸
湿吸収体を備え、 前記吸湿吸収体は、前記限定通気孔の内部に配設されて
前記限定通気孔を通過する空気中の湿気および前記限定
通気孔の内部にて結露し発生する水滴の双方を吸湿およ
び吸収することを特徴とする車載用電子機器の収容ケー
ス。2. An in-vehicle device having a case body in which an electronic device is housed, and a limited ventilation hole for limiting a portion of a desired portion of the case body for ventilating from the outside of the case body to the inside of the case body. The housing case of the electronic device for use includes a moisture absorbent that absorbs and absorbs both moisture and water droplets in the air, and the moisture absorbent is disposed inside the limited ventilation hole and passes through the limited ventilation hole. A housing case for an on-vehicle electronic device, which absorbs and absorbs both moisture in the air and water droplets generated by dew condensation inside the limited ventilation hole.
と、該ケース体の所望部分に前記ケース体の外部から前
記ケース体の内部へ通気する部分を限定させた限定通気
孔とを有する車載用電子機器の収容ケースにおいて、 空気中の湿気および水滴の双方を吸湿および吸収する吸
湿吸収体を備え、 前記吸湿吸収体は、前記ケース体の内部における前記限
定通気孔の開口部を塞ぎ、かつ前記開口部の近傍位置に
おける前記ケース体の内壁面を覆うように配設されるこ
とを特徴とする車載用電子機器の収容ケース。3. A vehicle body having a case body in which an electronic device is housed, and a limited ventilation hole for limiting a portion of a desired portion of the case body for ventilating from the outside of the case body to the inside of the case body. In a housing case of an electronic device for use, a moisture absorbent absorber that absorbs and absorbs both moisture and water droplets in the air, the moisture absorbent absorber blocking the opening of the limited ventilation hole inside the case body, and An accommodation case for a vehicle-mounted electronic device, which is arranged so as to cover an inner wall surface of the case body at a position near the opening.
における前記限定通気孔の開口部を塞ぎ、かつ前記開口
部の近傍位置における前記ケース体の内壁面を覆うよう
に配設されることを特徴とする請求項２記載の車載用電
子機器の収容ケース。4. The moisture absorbent absorber is arranged so as to close the opening of the limited ventilation hole inside the case body and cover the inner wall surface of the case body in the vicinity of the opening. The housing case for a vehicle-mounted electronic device according to claim 2.
前記ケース体の内部と外部に各々開口する前記通気孔の
開口部間を結ぶ空気の通過経路長が長く形成されること
を特徴とする請求項２ないし請求項４のいずれか１項に
記載の車載用電子機器の収容ケース。5. The limited ventilation hole is bent and arranged,
5. The air passage path connecting the openings of the ventilation holes that are open to the inside and the outside of the case body, respectively, is formed to have a long length. Housing case for in-vehicle electronic devices.
面を覆うように前記内壁面に貼着されて配設されること
を特徴とする請求項１ないし請求項５のいずれか１項に
記載の車載用電子機器の収容ケース。6. The moisture absorption body is attached to the inner wall surface of the case body so as to cover the inner wall surface of the case body. A housing case for the in-vehicle electronic device described in.
水フィルタを有し、 前記防水フィルタは、前記ケース体の内側における前記
限定通気孔の開口部を塞ぐように配設されることを特徴
とする請求項２ないし請求項６のいずれか１項に記載の
車載用電子機器の収容ケース。7. A waterproof filter that allows air to pass therethrough and does not allow water drops to pass therethrough, wherein the waterproof filter is arranged so as to close an opening of the limited ventilation hole inside the case body. The housing case for the on-vehicle electronic device according to claim 2,
体の間に介在させて配設されることを特徴とする請求項
１ないし請求項７のいずれか１項に記載の車載用電子機
器の収容ケース。8. A heat insulating member having a low thermal conductivity, wherein the heat insulating member is disposed between the inner wall surface of the case body and the moisture absorbing body. A housing case for the on-vehicle electronic device according to claim 7.
ス体の周辺位置に蓄熱容量の高い蓄熱部材とを備え、 前記熱伝導部材は、前記ケース体と前記蓄熱部材の双方
と接続させて配設されることを特徴とする請求項１ない
し請求項８のいずれか１項に記載の車載用電子機器の収
容ケース。9. A heat conductive member having high heat conductivity, and a heat storage member having high heat storage capacity in a peripheral position of the case body, wherein the heat conductive member is connected to both the case body and the heat storage member. The housing case for an on-vehicle electronic device according to any one of claims 1 to 8, characterized in that the housing case is arranged as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001195366A JP2003011742A (en) | 2001-06-27 | 2001-06-27 | Housing case of on-vehicle electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001195366A JP2003011742A (en) | 2001-06-27 | 2001-06-27 | Housing case of on-vehicle electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003011742A true JP2003011742A (en) | 2003-01-15 |
Family
ID=19033349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001195366A Pending JP2003011742A (en) | 2001-06-27 | 2001-06-27 | Housing case of on-vehicle electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003011742A (en) |
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| EP1527956A1 (en) * | 2003-10-29 | 2005-05-04 | NSK Ltd. | Electronic control unit |
| JP2006229061A (en) * | 2005-02-18 | 2006-08-31 | Sumitomo Wiring Syst Ltd | Printed wiring circuit board accommodation case |
| JP2007336662A (en) * | 2006-06-14 | 2007-12-27 | Yazaki Corp | Drainage structure for electrical connection box |
| JP2009125618A (en) * | 2007-11-20 | 2009-06-11 | Teijin Fibers Ltd | Moisture absorbing/releasing agent for use in outdoor electric box, and outdoor electric box |
| JP2011114074A (en) * | 2009-11-25 | 2011-06-09 | Nikon Corp | Electronic apparatus |
| JP2013222898A (en) * | 2012-04-18 | 2013-10-28 | Olympus Corp | Dew condensation prevention structure of endoscope |
| KR101481137B1 (en) * | 2013-12-19 | 2015-01-12 | 현대오트론 주식회사 | Electronic control apparatus for vehicle using bracket |
| JP2015188013A (en) * | 2014-03-26 | 2015-10-29 | 日東電工株式会社 | Ventilation member and ventilation unit |
| JP2015213655A (en) * | 2014-05-12 | 2015-12-03 | 象印マホービン株式会社 | Heating device |
| JP2017069292A (en) * | 2015-09-29 | 2017-04-06 | 株式会社コンテック | Humidity control device and casing including the same |
| JP2019121631A (en) * | 2017-12-28 | 2019-07-22 | 三菱電機株式会社 | Electronic device |
| WO2020167500A1 (en) * | 2019-02-12 | 2020-08-20 | Illinois Tool Works, Inc. | Thermally insulated covers for condensation inhibition in an oven |
| WO2020101583A3 (en) * | 2018-11-14 | 2020-08-20 | Bi̇med Tekni̇k Aletler Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | Pressure balancing device |
| CN113134287A (en) * | 2020-01-17 | 2021-07-20 | 惠州市沃瑞科技有限公司 | Waterproof dustproof humidifying valve subassembly with electronic components seal shell |
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