JP2005181799A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of reducing the running cost for filter exchange, internal cleaning, maintenance, etc., and suppressing a temperature rise by efficiently cooling the interior of the device without requiring specific equipment etc. <P>SOLUTION: A casing 2 having a hermetic structure includes a display device 10. A duct member 3 forming a flow channel 5 being in contact with the inner surface 20a of the casing is disposed along the surface on the internal space side of a casing wall 20 exposed to the ambient air. An air blowing means 4 for forcibly circulating the internal air is provided to the flow channel 5 extending from an introduction port 31 for introducing the interior air to a discharge port 32 for discharging the air into the internal space. The heat of the introduced internal air is dissipated into the ambient air through the casing wall 20 facing the flow channel 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Translated fromJapanese

本発明は、筐体内に表示器を内装した表示装置に関する。  The present invention relates to a display device in which a display is housed in a housing.

駅や空港の構内には、行先や発車時刻等を案内する案内表示、或いは広告表示のための表示装置が設置されているが、装置筐体に内装されている表示器が発熱するため、従来、筐体壁に通風口を設け、ファンにより強制的に外気を取り入れて装置内部を冷却していた（例えば、特許文献１参照。）。
しかしながら、特に地下鉄等の塵埃が多い場所では、外気取り込み口に設けたフィルターが１ヶ月〜半年程度の短期間で目詰まりして交換が必要となり、また、取り込まれた外気中の湿気により電子部品の不良の可能性もあり、定期的に清掃、メンテナンスが必要であることからランニングコストが高くなるといった問題があった。A display device for guidance display or advertisement display that guides the destination, departure time, etc. is installed in the premises of the station or airport, but since the display unit built in the device case generates heat, A ventilation port is provided in the housing wall, and the inside of the apparatus is cooled by forcibly taking in outside air by a fan (see, for example, Patent Document 1).
However, especially in places with a lot of dust such as subways, the filter provided at the outside air intake port is clogged in a short period of about one month to half a year and needs to be replaced. There is also a possibility that the running cost becomes high because periodic cleaning and maintenance are necessary.

そこで筐体を密閉構造とし、内気を冷却するための空調機を内蔵したものや、ヒートパイプを突設したものなどが提案されているが（例えば、特許文献２、３参照。）、これら特殊な機器を備えるものはコスト増大の原因となり、装置全体の重量も重くなり、軽量小型化のニーズに反するものであった。また、ファンを設けただけのものでは、発熱量の大きいＬＥＤ表示器を内装した近年の表示装置では冷却効果が不十分であり対応できない。  In view of this, there have been proposed a case in which the casing has a sealed structure and an air conditioner for cooling the inside air is built in, or a case in which a heat pipe is protruded (see, for example,Patent Documents 2 and 3). A device equipped with such a device causes an increase in cost, and the weight of the entire device increases, which is against the need for light weight and downsizing. In addition, with only a fan provided, a recent display device having an LED display with a large calorific value cannot provide a sufficient cooling effect.

特開平８−１９４４３７号公報JP-A-8-194437実開昭５７−６５３８０号公報Japanese Utility Model Publication No. 57-65380特開平３−２９３６９３号公報Japanese Patent Laid-Open No. 3-293693

そこで、本発明が前述の状況に鑑み、解決しようとするところは、フィルター交換や内部清掃、メンテナンスなどのランニングコストを低減できるとともに、特別な機器等を必要とすることなく効率よく装置内部を冷却して温度上昇を抑制できる表示装置を提供する点にある。  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem of reducing the running cost such as filter replacement, internal cleaning, and maintenance, and efficiently cooling the inside of the apparatus without requiring special equipment. Thus, a display device capable of suppressing a temperature rise is provided.

本発明は、前述の課題解決のために、筐体内に表示器を内装した表示装置であって、前記筐体を内気密閉構造とするとともに、外気に接する筐体壁における内部空間側の面に沿って、当該筐体壁内面に接する流通路を形成するダクト部材を配設し、内気を導入する導入口から内部空間に放出する排出口に至る前記流通路に、内気を強制的に流通させるための送風手段を設け、導入された内気の熱を当該流通路に臨む筐体壁を通じて外気中に放熱してなることを特徴とする表示装置を構成した。  In order to solve the above-described problems, the present invention is a display device in which a display is housed in a housing, wherein the housing has an inside air sealing structure, and is provided on a surface on the inner space side of the housing wall in contact with outside air. A duct member that forms a flow path that contacts the inner surface of the housing wall is disposed along the forcible flow of the inside air through the flow path that extends from the introduction port that introduces the inside air to the discharge port that discharges it to the internal space. There is provided a display device characterized in that a blowing means is provided, and the heat of the introduced inside air is radiated into the outside air through a housing wall facing the flow passage.

ここで、前記ダクト部材が、断面視略コ字形又は略半円形の部材で構成され、対面する筐体壁内面との間に形成される中空部に沿って前記流通路が構成されるものが好ましい。  Here, the duct member is formed of a substantially U-shaped or substantially semicircular member in cross-sectional view, and the flow path is configured along a hollow portion formed between the housing wall inner surfaces facing each other. preferable.

また、前記筐体壁に、内面側の前記流通路内に突出する凹部を設けてなるものが好ましく、具体的には、前記凹部が、筐体内を貫通して両端部が筐体外部に開放された外気流通用の管状体よりなるものが好ましい。  In addition, it is preferable that the housing wall is provided with a recess protruding into the flow path on the inner surface side. Specifically, the recess penetrates the housing and both ends are open to the outside of the housing. What consists of the tubular body for external air distribution made is preferable.

さらに、前記筐体壁に、内面側の前記流通路内に連通する中空部を内部に有した突出部を形成してなるものが好ましい。  Further, it is preferable that the housing wall is formed with a projecting portion having a hollow portion communicating with the inside of the flow passage on the inner surface side.

また、前記筐体壁に、外部に突出した先端部が閉塞され、且つ内面側の前記流通路を貫通して他端部が筐体内部に開放される内気流通用の筒状体を設けてなるものが好ましい。  The casing wall is provided with a tubular body for circulating the inside air whose front end protruding outside is closed and through which the other end is opened inside the casing. Is preferred.

より具体的な構成としては、前記筐体を前板及び後板の少なくとも一方に表示欄を備えた箱体形状に構成するとともに、筐体壁を構成する天板、左右側板および底板の内面側に沿って前記ダクト部材を配設し、天板内面に位置するダクト部材に、内気を導入する導入口及び送風手段を設け、前記底板内面に位置するダクト部材における前記表示欄を有する前板及び後板の少なくとも一方に対向する壁面に、前記内気を放出させる排出口を設けてなるものが好ましい。  As a more specific configuration, the casing is configured in a box shape having a display column on at least one of the front plate and the rear plate, and the top plate, the left and right side plates, and the bottom plate that form the casing wall A front plate having the display column in the duct member located on the inner surface of the bottom plate; It is preferable to provide a discharge port for releasing the inside air on a wall surface facing at least one of the rear plates.

この場合、前記排出口から放出された内気を、前記表示欄を備えた前板又は後板の内面とその内側に設けられる表示器との間の隙間の流通路と、前記表示器の裏面側の内部空間とに分岐させる隔壁を設けてなるものが好ましい。  In this case, the inside air discharged from the discharge port, the flow path of the gap between the inner surface of the front plate or the rear plate provided with the display column and the display provided on the inside, and the back side of the display It is preferable to provide a partition wall that branches into the inner space.

前記筐体壁をアルミニウム又はアルミニウム合金より構成してなるものが好ましい。  What comprises the said housing | casing wall from aluminum or aluminum alloy is preferable.

以上にしてなる本願発明に係る表示装置は、装置筐体を内気密閉構造として塵埃や湿気の侵入を無くしたことから、フィルター交換や内部清掃、メンテナンスなどのランニングコストを低減することができる。
また、空調機やヒートパイプなどの特別な機器等を必要とすることなく、内気を筐体壁内面に接する流通路に沿って流通させるダクト部材を設けることにより、筐体壁を通じて内気の熱を効率よく放出でき、軽量小型化を図ることも可能であり、前記ダクト部材により筐体強度も向上するため、従来より薄い板材を用いて筐体を構成したり、従来必要としていた補強材などの削除或いは軽量化が可能となり、より一層の冷却効率の向上及び軽量化を図ることが可能である。The display device according to the present invention having the above configuration can reduce the running cost of filter replacement, internal cleaning, maintenance, and the like because the device casing has an inside air sealing structure to eliminate the entry of dust and moisture.
In addition, by providing a duct member that circulates the inside air along the flow path in contact with the inner surface of the housing wall without requiring special equipment such as an air conditioner or a heat pipe, the heat of the inside air is passed through the housing wall. It can be discharged efficiently, and it is possible to reduce the weight and size, and the duct member improves the strength of the housing. It is possible to delete or reduce the weight, and it is possible to further improve the cooling efficiency and reduce the weight.

また、ダクト部材は、断面視略コ字形又は略半円形の部材で構成され、対面する筐体壁内面との間に形成される中空部に沿って前記流通路が構成されるので、モノコック構造により筐体強度が向上できるとともに内気の流通もスムーズに行うことができる。  In addition, the duct member is configured by a substantially U-shaped or substantially semicircular member in cross-section, and the flow passage is configured along a hollow portion formed between the casing wall inner surface and the monocoque structure. Thus, the housing strength can be improved and the inside air can be circulated smoothly.

また、筐体壁に、内面側の前記流通路内に突出する凹部を設けたので、外気と接する壁内面の表面積を増大させることなり、これにより流通路内の内気冷却効率が向上する。特に、前記凹部が、筐体内を貫通して両端部が筐体外部に開放された外気流通用の管状体よりなるものでは、管状体壁面に接するダクト部材を通じて、流通路内の内気の熱を効率的に筒状体内部の外気中に放出することができる。  Moreover, since the recessed part which protrudes in the said flow path by the inner surface side was provided in the housing | casing wall, it will increase the surface area of the wall inner surface which contacts external air, and, thereby, the internal air cooling efficiency in a flow path improves. In particular, in the case where the concave portion is made of a tubular body for circulating the outside air that penetrates the inside of the casing and both ends are opened to the outside of the casing, the heat of the inside air in the flow passage is radiated through a duct member in contact with the tubular body wall surface. It can be efficiently discharged into the outside air inside the cylindrical body.

また、筐体壁に、内面側の前記流通路内に連通する中空部を内部に有した突出部を形成したので、同じく外気と接する壁内面の表面積を増大させることなり、これにより流通路内の内気冷却効率が向上する。  In addition, since the projecting portion having a hollow portion communicating with the inside of the flow passage on the inner surface side is formed on the housing wall, the surface area of the inner surface of the wall that is also in contact with the outside air is increased. The inside air cooling efficiency is improved.

また、筐体壁に、外部に突出した先端部が閉塞され、且つ内面側の前記流通路を貫通して他端部が筐体内部に開放される内気流通用の筒状体を設けたので、外部に突設した筒状体に内気を流通させることにより、当該筒壁を通じて内気の熱を外気中に放熱させることができる。  In addition, the casing wall is provided with a cylindrical body for circulating the inside air whose front end protruding outside is closed and which penetrates the flow path on the inner surface side and the other end is opened inside the casing. By flowing the inside air through the cylindrical body protruding outside, the heat of the inside air can be radiated into the outside air through the cylinder wall.

また、筐体を前板及び後板の少なくとも一方に表示欄を備えた箱体形状に構成するとともに、筐体壁を構成する天板、左右側板および底板の内面側に沿って前記ダクト部材を配設し、天板内面に位置するダクト部材に、内気を導入する導入口及び送風手段を設け、前記底板内面に位置するダクト部材における前記表示欄を有する前板及び後板の少なくとも一方に対向する壁面に、前記内気を放出させる排出口を設けてなるので、筐体内部で昇温されて上昇した内気が前記導入口から流通路内に導入され、流通過程で筐体壁により熱を奪われ冷やされた内気が前記排出口から内部空間に再度放出されることにより表示器などの熱を奪い、当該内部機器の温度上昇が抑えられる。  Further, the casing is configured in a box shape having a display column on at least one of the front plate and the rear plate, and the duct member is disposed along the inner surfaces of the top plate, the left and right side plates, and the bottom plate constituting the housing wall. The duct member located on the inner surface of the top plate is provided with an inlet for introducing the inside air and the air blowing means, and is opposed to at least one of the front plate and the rear plate having the display column in the duct member located on the inner surface of the bottom plate. Since the discharge port for releasing the inside air is provided in the wall surface to be discharged, the inside air that has been heated and raised inside the housing is introduced into the flow passage from the introduction port, and heat is taken away by the housing wall during the distribution process. The inside air that has been cooled is discharged again from the discharge port into the internal space, thereby depriving the heat of the display and the like, and the temperature rise of the internal device is suppressed.

また、排出口から放出された内気を、前記表示欄を備えた前板又は後板の内面とその内側に設けられる表示器との間の隙間の流通路と、前記表示器の裏面側の内部空間とに分岐させる隔壁を設けたので、表示器を冷却するとともにその裏面側のその他の電子機器等をも効率よく冷却できる。  Further, the inside air discharged from the discharge port is divided into a flow passage of a gap between the inner surface of the front plate or the rear plate provided with the display column and a display device provided on the inside thereof, and the inside of the back surface side of the display device. Since the partition wall branched into the space is provided, the display can be cooled and other electronic devices on the back side can be efficiently cooled.

また、筐体壁をアルミニウム又はアルミニウム合金より構成したので、優れた熱伝導により内気の熱を効率よく外部に放出できるとともに、電磁遮蔽効果も高く、ＥＭＣ／ＥＭＩ対策が立て易いといったメリットもある。  In addition, since the housing wall is made of aluminum or an aluminum alloy, the heat of the inside air can be efficiently released to the outside by excellent heat conduction, and the electromagnetic shielding effect is high, so that there is an advantage that EMC / EMI measures can be easily taken.

次に、本発明の実施形態を添付図面に基づき詳細に説明する。  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１は、本発明に係る表示装置の全体構成図であり、図１〜３は代表的実施形態を示し、図中符号１は表示装置、２は筐体、３はダクト部材、４は送風手段、５は流通路をそれぞれ示している。  FIG. 1 is an overall configuration diagram of a display device according to the present invention. FIGS. 1 to 3 show typical embodiments. Reference numeral 1 is a display device, 2 is a housing, 3 is a duct member, and 4 is a blower.Means 5 and 5 respectively indicate flow paths.

本発明の表示装置１は、筐体２内に表示器１０が内装され、前記筐体２を内気密閉構造とするとともに、外気に接する筐体壁２０における内部空間側の面に沿って、当該筐体壁内面２０ａに接する流通路５を形成するダクト部材３を配設し、内気を導入する導入口３１から内部空間に放出する排出口３２に至る前記流通路５に、内気を強制的に流通させるための送風手段４を設け、導入された内気の熱を当該流通路５に臨む筐体壁２０を通じて外気中に放熱してなることを特徴としている。尚、以下の実施形態では駅構内や空港ロビー等において天井から吊り下げられる行先表示装置を例示しているが、その他の案内看板や広告看板等であってもよく、また、支柱等を介して床面に載置されたり壁面に取り付けたり、様々な設置態様が可能である。  In the display device 1 of the present invention, adisplay 10 is housed in ahousing 2, thehousing 2 has an inside air sealing structure, and the inner wall side surface of thehousing wall 20 in contact with outside air Theduct member 3 that forms theflow passage 5 in contact with the housing wallinner surface 20a is disposed, and the inside air is forced into theflow passage 5 that extends from theintroduction port 31 that introduces the inside air to thedischarge port 32 that discharges it to the internal space. Blowing means 4 for circulation is provided, and the heat of the introduced inside air is radiated to the outside air through thehousing wall 20 facing theflow passage 5. In the following embodiment, a destination display device that is suspended from the ceiling in a station premises, an airport lobby, or the like is illustrated, but may be other information signs, advertisement signs, etc. Various installation modes are possible, such as being placed on the floor or attached to a wall.

前記筐体２は方形の箱体形状に構成され、筐体壁２０を構成している前板２１及び後板２２には、それぞれ表示器１０に対応する表示欄１１が設けられており、同じく筐体壁２０を構成する天板２３、左右側板２４、２５および底板２６の内面側に沿って、前記ダクト部材３がそれぞれ配設されている。
前記筐体壁２０を構成する各板やダクト部材３は、アルミニウム又はアルミニウム合金より構成され、好ましくはＡｌ−Ｍｇ系アルミニウム合金のＡ５０５２ Ｈ１４、Ｈ３４（高力アルミニウム合金）が用いられ、接着剤とリベット接合を併用して組み立てられている。Thehousing 2 is formed in a rectangular box shape, and thefront plate 21 and therear plate 22 constituting thehousing wall 20 are provided withdisplay columns 11 corresponding to thedisplay devices 10 respectively. Theduct members 3 are disposed along the inner surfaces of thetop plate 23, left andright side plates 24 and 25, and thebottom plate 26 constituting thehousing wall 20, respectively.
Each plate andduct member 3 constituting thehousing wall 20 are made of aluminum or an aluminum alloy, preferably A5052 H14 or H34 (high-strength aluminum alloy) of Al—Mg-based aluminum alloy is used. It is assembled using rivet joints.

前記表示器１０は、文字や画像を表示するための発光ダイオードよりなるＬＥＤモジュールで構成され、表示欄１１を有する前板２１及び後板２２の内側近傍に平行に立設した隔壁１４、１４にそれぞれ固定されている。尚、表示器１０及び表示欄１１は、筐体２の前後片側面にのみ設けてもよい。また、表示器１０はＬＥＤモジュールに何ら限定されず、有機ＥＬ素子からなる表示器や液晶表示器その他の従来からの表示器も採用できる。  Thedisplay 10 is composed of an LED module composed of a light emitting diode for displaying characters and images, and is provided onpartition walls 14 and 14 erected in parallel in the vicinity of the inside of thefront plate 21 and therear plate 22 having adisplay column 11. Each is fixed. Thedisplay 10 and thedisplay column 11 may be provided only on the front and rear side surfaces of thehousing 2. Further, thedisplay 10 is not limited to the LED module, and a display made of an organic EL element, a liquid crystal display, and other conventional displays can also be adopted.

また、前記隔壁１４に対し所定間隔をおいた内側の所定位置には、別途隔壁１５が立設され、該隔壁１５に、前記表示器１０に対して電力を供給するための電源ユニット１２や表示内容を制御するための制御器１３などが配設されている。尚、表示器１０や電源ユニット１２、制御器１３等が配設されるこれら隔壁１４、１５には、適宜スリット穴や切欠部を形成したり複数の分割板で構成することにより、各部への通気性を向上させることが好ましい実施例である。  Separately, apartition wall 15 is erected at a predetermined position inside thepartition wall 14 with a predetermined interval, and apower supply unit 12 for supplying power to thedisplay unit 10 to thepartition wall 15 and a display. Acontroller 13 for controlling the contents is disposed. In addition, thesepartition walls 14 and 15 in which thedisplay 10, thepower supply unit 12, thecontroller 13, and the like are disposed may be appropriately formed with slit holes or notches, or configured with a plurality of divided plates to Increasing the air permeability is a preferred embodiment.

前記ダクト部材３は、断面視略コ字形又は略半円形の部材であり、前後両端縁に沿って形成されたフランジ部３０、３０を筐体壁内面２０ａに対して接着剤やリベット接合、溶接等で固定することにより、対面する当該内面２０ａとの間の中空部に流通路５が形成される。このようなダクト部材３は、天板２３、左右側板２４、２５および底板２６の内面側に沿って、互いに端部を連結して連続的に配置されており、これら上下左右の筐体内面に沿って環状の流通路５が構成されている。尚、各ダクト部材３の流通路５が連通するように多少の間隔をあけて配置しても良く、また、一部又は全体を一体形成した部材を用いてもよい。  Theduct member 3 is a substantially U-shaped or substantially semicircular member in cross-section, and theflange portions 30 formed along the front and rear end edges are bonded to the housing wallinner surface 20a with adhesive, rivets, or welded. By fixing with, for example, theflow path 5 is formed in a hollow portion between the facinginner surface 20a. Such aduct member 3 is continuously arranged with end portions connected to each other along the inner surfaces of thetop plate 23, the left andright side plates 24 and 25, and thebottom plate 26, Anannular flow passage 5 is formed along the line. In addition, you may arrange | position with some space | interval so that theflow path 5 of eachduct member 3 may connect, and the member which formed one part or the whole integrally may be used.

本例では各面の略中央部に真直なダクト部材３が配設されているが、斜め方向に沿って配したり、屈曲したジグザグ状又は曲線状に構成したダクト部材を各面に配することにより流路長さを稼いだり、複数のダクト部材を並設して流通路を複数設けることや、流通路が複数に分岐したり或いは合流するようなダクト部材を設けることも好ましい。また、本例では上下左右の４面にそれぞれダクト部材３を配して環状の流通路が構成されているが、前板又は後板にダクト部材を配することもでき、また、一面又は二面若しくは三面にのみダクト部材を設けたものであっても良い。  In this example, thestraight duct member 3 is disposed at substantially the center of each surface. However, thestraight duct member 3 is disposed along the oblique direction, or a bent zigzag or curved duct member is disposed on each surface. It is also preferable to increase the flow path length, to provide a plurality of flow passages by arranging a plurality of duct members in parallel, or to provide a duct member that branches or merges into a plurality of flow passages. In this example, theduct member 3 is arranged on each of the upper, lower, left, and right four surfaces to form an annular flow passage. However, the duct member can be arranged on the front plate or the rear plate. You may provide the duct member only in the surface or three surfaces.

天板２３内面側のダクト部材３には、流通路５に内気を導入するための導入口３１、３１が開設されており、各導入口３１には、内気を強制的に導入する送風手段４として電動ファン４０が設けられている。一方、底板２６内面側のダクト部材３の前壁及び後壁には、それぞれ前板２１及び後板２２の内面側に配設される表示器１０に対して内気を放出させる排出口３２が開設されている。そして、筐体内部で昇温されて上昇した内気が前記導入口３１から流通路５内に導入され、流通過程で筐体壁により熱を奪われ冷やされた内気が前記排出口３２から内部空間に再度放出されることにより表示器などの熱を奪い、当該内部機器の温度上昇が抑えられるのである。  Theduct member 3 on the inner surface side of thetop plate 23 is provided withintroduction ports 31 and 31 for introducing the inside air into theflow passage 5, and the air blowing means 4 for forcibly introducing the inside air into eachintroduction port 31. Theelectric fan 40 is provided. On the other hand, on the front wall and the rear wall of theduct member 3 on the inner surface side of thebottom plate 26, adischarge port 32 for releasing the inside air to thedisplay 10 disposed on the inner surface side of thefront plate 21 and therear plate 22 is opened. Has been. The inside air that has been heated and raised inside the housing is introduced into theflow passage 5 from theintroduction port 31, and the inside air that has been cooled by being deprived of heat by the housing wall during the distribution process is introduced into the internal space from thedischarge port 32. By releasing again, the heat of the display or the like is taken away, and the temperature rise of the internal device is suppressed.

排出口３２は、ダクト部材３の左右長手方向に沿って、所定間隔おきに複数開設されており、排出口３２から放出された内気は、上記隔壁１４の下端部に形成された通孔１４ａを通じて当該隔壁１４と前板２１又は後板２２との間の隙間を表示器１０等の熱を奪いながら上昇する流路６０と、隔壁１４より内側の空間を上昇する流路６１とに分岐される。  A plurality ofdischarge ports 32 are provided at predetermined intervals along the left and right longitudinal direction of theduct member 3, and the inside air discharged from thedischarge ports 32 passes through the throughholes 14 a formed in the lower end portion of thepartition wall 14. The gap between thepartition wall 14 and thefront plate 21 or therear plate 22 is branched into aflow path 60 that rises while taking heat from thedisplay 10 and the like, and aflow path 61 that rises in the space inside thepartition wall 14. .

前記隔壁１４は、上記通孔１４ａを有するベース板１６と、その上端に蝶番１８を介して連結される支持板１７とより構成され、表示器１０が固定された当該支持板１７は前記蝶番１８を介して前後に開閉可能に構成されている。また、表示欄１１を備えた前板２１及び後板２２も、それぞれ天板２３の前縁部及び後縁部に蝶番１９を介して連結され、同じく前後に開閉可能に構成されている。したがって保守点検等の際には、前記前板２１又は後板２２の下端側を持ち上げて外方に開くことにより表示器１０等の保守点検等を行うことが可能となり、更に、支持板１７の上端側を外方に引いて開くことにより、隔壁１５に設けられている電源ユニット１２や制御器１３等の保守点検等が可能となる。  Thepartition wall 14 includes abase plate 16 having the throughhole 14a and asupport plate 17 connected to an upper end of thepartition plate 14 via ahinge 18. Thesupport plate 17 to which thedisplay 10 is fixed is connected to thehinge 18. It is configured to be openable and closable through the front and rear. Thefront plate 21 and therear plate 22 provided with thedisplay column 11 are also connected to the front edge portion and the rear edge portion of thetop plate 23 via ahinge 19, respectively, and can be opened and closed in the same manner. Therefore, in the case of maintenance inspection, the lower end side of thefront plate 21 or therear plate 22 is lifted and opened outward, so that the maintenance inspection of thedisplay 10 and the like can be performed. By pulling and opening the upper end side outward, maintenance and inspection of thepower supply unit 12 and thecontroller 13 provided in thepartition wall 15 can be performed.

隔壁１４により内側に分岐された流路６１は、さらに隔壁１５によって外側の流路６２と内側の流路６３とに分岐される。これら流路６０、６２、６３を流通する内気は、表示器１０や電源ユニット１２、制御器１３等の熱を奪いつつ、それぞれ隔壁１４上端と天板２３との隙間や隔壁１５上端と天板２３との隙間、隔壁１４、１５自体に形成される隙間などを介して合流し、再び電動ファン４０により流通路５内に強制的に導入され、ダクト内で筐体壁２０により熱を奪われた後、再び冷気となって上記排出口３２から内部空間に放出されるといった循環が繰り返されるのである。  Thechannel 61 branched inward by thepartition wall 14 is further branched by thepartition wall 15 into anouter channel 62 and aninner channel 63. The inside air flowing through theflow paths 60, 62, 63 removes heat from thedisplay unit 10, thepower supply unit 12, thecontroller 13, etc., while the gap between the upper end of thepartition wall 14 and thetop plate 23, and the upper end of thepartition wall 15 and the top plate, respectively. 23, the gap formed in thepartition walls 14 and 15 themselves, and the like, are forcedly introduced into theflow passage 5 again by theelectric fan 40, and heat is taken away by thehousing wall 20 in the duct. After that, the circulation is repeated such that the air is cooled again and discharged from thedischarge port 32 into the internal space.

表示装置１は、さらに筐体２内を貫通し、両端部が筐体外部に開放された外気流通用の管状体７が設けられており、該管状体７の管壁は前記流通路５内に突出している。そして、流通路５内の内気は、上述のごとく筐体壁内面２０ａで熱を奪われるとともに、前記突出している管壁７０を通じて熱を奪われ、管内部を流通する外気中にその熱が放出されることになる。このような管状体７壁面を流通路５内に突出させることは、当該流通路５内に臨む外気と接する壁内面の表面積を増大させることなり、これにより流通路５内の内気冷却効率を向上させることになるのである。更に、管状体７壁面はダクト部材３を貫通しているため、当該管状体７壁面に接するダクト部材３を通じて、流通路内の内気の熱が効率的に筒状体７内部の外気中に放出されることになる。尚、図中符号７４は、底板２６に被着される前記管状体７開口端部のフィルター部材であり、管状体７への埃等の侵入を防止するためのものである。  The display device 1 is further provided with atubular body 7 for circulating the outside air that penetrates through the inside of thehousing 2 and whose both ends are open to the outside of the housing, and the tube wall of thetubular body 7 is in theflow passage 5. Protruding. The inside air in theflow passage 5 is deprived of heat by the housing wallinner surface 20a as described above, and is also deprived of heat through the protrudingtube wall 70, and the heat is released into the outside air circulating inside the tube. Will be. Protruding the wall surface of such atubular body 7 into theflow passage 5 increases the surface area of the wall inner surface in contact with the outside air facing theflow passage 5, thereby improving the inside air cooling efficiency in theflow passage 5. It will be made to. Further, since the wall surface of thetubular body 7 penetrates theduct member 3, the heat of the inside air in the flow passage is efficiently released into the outside air inside thetubular body 7 through theduct member 3 in contact with the wall surface of thetubular body 7. Will be. In the figure,reference numeral 74 denotes a filter member at the opening end of thetubular body 7 attached to thebottom plate 26, and is for preventing dust and the like from entering thetubular body 7.

このような表面積増大により冷却効率を向上させる構造は、本例の構造に何ら限定されず、例えば図４（ａ）、（ｂ）に示すように、筐体壁２０の一部を流通路５内部に突出するように凹陥部７１を設けたものや、逆に外方に突出した突出部７２を設けることも好ましい。突出部７２を設けて表面積増大を図る応用例としては、図５に示すように、筐体外部に突出する管状体７３の両端を流通路５に連通させてバイパス路を形成してなるものも好ましい実施例である。また、本実施形態は天板２３及び底板２６間の内部空間に上下に管状体７を貫通させたものであるが、図６（ａ）に示すように、例えば屈曲した管状体７を天板２３及び側板２４（２５）間に設けたものや、他の筐体壁から他の筐体壁へ連通させたものであってもよく、図６（ｂ）に示すように三以上の筐体壁外面に連通するものも好ましい。  Such a structure for improving the cooling efficiency by increasing the surface area is not limited to the structure of this example. For example, as shown in FIGS. It is also preferable to provide arecess 71 provided so as to protrude inside, or aprotrusion 72 protruding outward. As an application example in which the projectingportion 72 is provided to increase the surface area, as shown in FIG. 5, a bypass body is formed by connecting both ends of atubular body 73 projecting outside the housing to theflow passage 5. This is a preferred embodiment. Further, in the present embodiment, thetubular body 7 is vertically penetrated in the internal space between thetop plate 23 and thebottom plate 26. As shown in FIG. 23 and the side plate 24 (25), or may be communicated from another housing wall to another housing wall, as shown in FIG. Those communicating with the outer wall surface are also preferable.

また、流通路５の流通方向に対して直角に貫通するものにも何ら限定されず、例えば図６（ｃ）に示すように流通方向に沿った管状体の壁面を一部又は全部突出させたものや、斜め或いは曲線的に貫通するものであってもよい。
更に、両端を筐体壁外面に連通させたもの以外に、図７（ａ）（ｂ）に例示するように、ダクト部材を貫通した後、内部空間の途中部で閉塞された筒状体７を設けたものや、図７（ｃ）に示すように筐体壁２０の外面に突出させたものも好ましい実施例である。Moreover, it does not limit at all to what penetrates at right angles with the distribution direction of theflow path 5, For example, as shown in FIG.6 (c), the wall surface of the tubular body along the distribution direction protruded partially or entirely. It may be one that penetrates diagonally or curvedly.
Further, in addition to the case in which both ends communicate with the outer surface of the housing wall, as illustrated in FIGS. 7A and 7B, thecylindrical body 7 that has passed through the duct member and is blocked in the middle of the internal space. Also provided are those that are provided on the outer wall of thehousing wall 20 as shown in FIG. 7C.

前記管状体７の管壁は流通路内部以外の内気にも接しており、当該内気の熱を奪って内気を冷却する効果も奏しており、この点に着目して、例えば図８に示すように、管状体７を螺旋状に形成して内気と接する表面積を増大させることも好ましい実施例である。  The tube wall of thetubular body 7 is also in contact with the inside air other than the inside of the flow passage, and also has the effect of taking the heat of the inside air and cooling the inside air. Focusing on this point, for example, as shown in FIG. Furthermore, it is also a preferred embodiment to increase the surface area in contact with the inside air by forming thetubular body 7 in a spiral shape.

また、本実施形態は、流通路を貫通して、その一端が筐体壁２０外面に開口するとともに他端が内部空間に開放される方形の筒体８０を配設し、筐体壁外面の開口部８０ａに、一端閉塞された筒状体８の開口部を略一致させて内気が連通する状態に密着させて取り付けられている。このように筐体外部に突設した筒状体８に内気を流通させることにより、当該筒壁を通じて内気の熱を外気中に放熱させることができるのである。前記筒状体８は、本例では表示装置１全体を天井から吊り下げるための吊りパイプである。  Further, the present embodiment is provided with arectangular cylinder 80 having one end opened to the outer surface of thehousing wall 20 and the other end opened to the inner space through the flow passage, Theopening 80a is attached in close contact with a state in which the inside air communicates with the opening of thecylindrical body 8 that is closed at one end. In this way, by circulating the inside air through thecylindrical body 8 projecting outside the housing, the heat of the inside air can be radiated into the outside air through the cylinder wall. In this example, thecylindrical body 8 is a suspension pipe for suspending the entire display device 1 from the ceiling.

本発明の実施形態に係る表示装置を示す断面図。Sectional drawing which shows the display apparatus which concerns on embodiment of this invention.同じく表示装置の要部を示す斜視図。The perspective view which similarly shows the principal part of a display apparatus.内気流路を示す部分断面図。The fragmentary sectional view which shows an inside air flow path.（ａ）は、流通路内に突出する凹陥部を設けた変形例を示す断面図、（ｂ）は、外方に突出した突出部を設けた変形例を示す断面図。(A) is sectional drawing which shows the modification which provided the recessed part which protrudes in a flow path, (b) is sectional drawing which shows the modification which provided the protrusion part which protruded outward.筐体外部に突出する管状体を設けた変形例を示す断面図。Sectional drawing which shows the modification which provided the tubular body which protrudes outside a housing | casing.（ａ）は、天板と側板の間に屈曲した管状体を設けた変形例を示す断面図、（ｂ）は、三つ以上の筐体壁外面に連通する管状体を設けた変形例を示す断面図、（ｃ）は、並設した管状体壁面を流通路内に一部突出させた変形例を示す断面図。(A) is sectional drawing which shows the modification which provided the bent tubular body between the top plate and the side plate, (b) shows the modification which provided the tubular body connected to three or more housing | casing wall outer surfaces. Sectional drawing, (c) is a sectional view showing a modified example in which the juxtaposed tubular body wall surfaces partially protrude into the flow passage.（ａ）及び（ｂ）は、ダクト部材を貫通して内部空間の途中部で閉塞される筒状体を設けた変形例を示す断面図、（ｃ）は、筒状体を筐体壁外面に突出させた変形例を示す断面図。(A) And (b) is sectional drawing which shows the modification which provided the cylindrical body which penetrates a duct member and is obstruct | occluded in the middle part of internal space, (c) is a housing wall outer surface Sectional drawing which shows the modification made to project to.螺旋状に形成された管状体の変形例を示す断面図。Sectional drawing which shows the modification of the tubular body formed in spiral.

符号の説明Explanation of symbols

１ 表示装置
２ 筐体
３ ダクト部材
４ 送風手段
５ 流通路
７ 管状体
８ 筒状体
１０ 表示器
１１ 表示欄
１２ 電源ユニット
１３ 制御器
１４ 隔壁
１４ａ 通孔
１５ 隔壁
１６ ベース板
１７ 支持板
１８、１９ 蝶番
２０ 筐体壁
２０ａ 内面
２１ 前板
２２ 後板
２３ 天板
２４、２５ 側板
２６ 底板
３０ フランジ部
３１ 導入口
３２ 排出口
４０ 電動ファン
６０、６１、６２、６３ 流路
７０ 管壁
７１ 凹陥部
７２ 突出部
７３ 管状体
８０ 筒体
８０ａ 開口部
DESCRIPTION OF SYMBOLS 1Display apparatus 2 Housing | casing 3Duct member 4 Blowing means 5Flow path 7Tubular body 8Tubular body 10Display 11Display column 12Power supply unit 13Controller 14Partition 14a Through-hole 15Partition 16Base plate 17Support plates 18, 19Hinge 20Housing wall20a Inner surface 21Front plate 22Rear plate 23Top plate 24, 25Side plate 26Bottom plate 30Flange portion 31Inlet port 32Discharge port 40Electric fan 60, 61, 62, 63Channel 70Pipe wall 71 Recessedportion 72Projection 73Tubular body 80Tubular body 80a Opening

Claims (9)

Translated fromJapanese

筐体内に表示器を内装した表示装置であって、前記筐体を内気密閉構造とするとともに、外気に接する筐体壁における内部空間側の面に沿って、当該筐体壁内面に接する流通路を形成するダクト部材を配設し、内気を導入する導入口から内部空間に放出する排出口に至る前記流通路に、内気を強制的に流通させるための送風手段を設け、導入された内気の熱を当該流通路に臨む筐体壁を通じて外気中に放熱してなることを特徴とする表示装置。  A display device having a display inside a casing, wherein the casing has an inside air sealing structure, and a flow path in contact with the inner surface of the casing wall along a surface on the inner space side of the casing wall in contact with outside air A duct member for forming the inside air is disposed, and a blowing means for forcibly circulating the inside air is provided in the flow passage extending from the introduction port for introducing the inside air to the discharge port for releasing the inside space. A display device, wherein heat is radiated into the outside air through a housing wall facing the flow passage. 前記ダクト部材が、断面視略コ字形又は略半円形の部材で構成され、対面する筐体壁内面との間に形成される中空部に沿って前記流通路が構成される請求項１記載の表示装置。  The said duct member is comprised by the cross-sectional view substantially U-shaped or substantially semicircular member, and the said flow path is comprised along the hollow part formed between the housing | casing wall inner surfaces which face. Display device. 前記筐体壁に、内面側の前記流通路内に突出する凹部を設けてなる請求項１又は２記載の表示装置。  The display device according to claim 1, wherein the housing wall is provided with a recess protruding into the flow path on the inner surface side. 前記凹部が、筐体内を貫通して両端部が筐体外部に開放された外気流通用の管状体よりなる請求項３記載の表示装置。  The display device according to claim 3, wherein the concave portion is formed of a tubular body for circulating the outside air that passes through the inside of the housing and has both end portions opened to the outside of the housing. 前記筐体壁に、内面側の前記流通路内に連通する中空部を内部に有した突出部を形成してなる請求項１又は２記載の表示装置。  The display device according to claim 1, wherein a protrusion having an internal hollow portion communicating with the inside of the flow passage on the inner surface side is formed on the housing wall. 前記筐体壁に、外部に突出した先端部が閉塞され、且つ内面側の前記流通路を貫通して他端部が筐体内部に開放される内気流通用の筒状体を設けてなる請求項１又は２記載の表示装置。  The casing wall is provided with a cylindrical body for inside air circulation in which a front end protruding outside is closed and the other end is opened to the inside of the casing through the flow path on the inner surface side. Item 3. The display device according to Item 1 or 2. 前記筐体を前板及び後板の少なくとも一方に表示欄を備えた箱体形状に構成するとともに、筐体壁を構成する天板、左右側板および底板の内面側に沿って前記ダクト部材を配設し、天板内面に位置するダクト部材に、内気を導入する導入口及び送風手段を設け、前記底板内面に位置するダクト部材における前記表示欄を有する前板及び後板の少なくとも一方に対向する壁面に、前記内気を放出させる排出口を設けてなる請求項１〜６の何れか１項に記載の表示装置。  The casing is configured in a box shape having a display column on at least one of the front plate and the rear plate, and the duct member is arranged along the inner surfaces of the top plate, the left and right side plates, and the bottom plate that form the housing wall. The duct member located on the inner surface of the top plate is provided with an introduction port for introducing the inside air and the air blowing means, and is opposed to at least one of the front plate and the rear plate having the display column in the duct member located on the inner surface of the bottom plate. The display device according to claim 1, wherein a discharge port for releasing the inside air is provided on a wall surface. 前記排出口から放出された内気を、前記表示欄を備えた前板又は後板の内面とその内側に設けられる表示器との間の隙間の流通路と、前記表示器の裏面側の内部空間とに分岐させる隔壁を設けてなる請求項７記載の表示装置。  The inside air discharged from the discharge port, the flow path of the gap between the inner surface of the front plate or the rear plate provided with the display column and the display provided on the inside, and the internal space on the back side of the display The display device according to claim 7, further comprising a partition wall that branches into the two. 前記筐体壁をアルミニウム又はアルミニウム合金より構成してなる請求項１〜８の何れか１項に記載の表示装置。
The display device according to claim 1, wherein the housing wall is made of aluminum or an aluminum alloy.

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