JP2007293105A - Image display device - Google Patents

Image display device Download PDF

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JP2007293105A
JP2007293105A JP2006122075A JP2006122075A JP2007293105A JP 2007293105 A JP2007293105 A JP 2007293105A JP 2006122075 A JP2006122075 A JP 2006122075A JP 2006122075 A JP2006122075 A JP 2006122075A JP 2007293105 A JP2007293105 A JP 2007293105A
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image display
back chamber
panel back
panel
housing
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Yoshiyuki Takeuchi
良幸 武内
Tatsuo Yoshihara
達雄 吉原
Toshiaki Kondo
俊明 近藤
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Sony Corp
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Sony Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To suppress the temperature rise of an liquid crystal display device equipped with an image display panel even in the case of a use in a special environment where radiation holes are not permitted while coping with such case. <P>SOLUTION: The image display device is constituted by being equipped with a panel back chamber 6 formed within a casing so as to cover the back side of the image display panel 5, an exhaust port 6a for exhausting the air from the interior of the panel back chamber 6 , an air supply opening 6b for supplying the air into the panel back chamber 6, an air flow passage 8 for cooling disposed to couple the exhaust port 6a and the air supply opening 6b in such a manner that the heat exchange with the outside of the casing can be performed, and an air circulation means 9 for circulating the air between the panel back chamber 6 and the air flow passage 8 for cooling via the exhaust port 6a and the air supply opening 6b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、画像表示パネルを備えてなる画像表示装置に関する。   The present invention relates to an image display device including an image display panel.

従来、液晶表示パネルや有機ＥＬ（エレクトロルミネッセンス）パネル等といった画像表示パネルを備えた、いわゆるＦＰＤ（フラット・パネル・ディスプレイ）と呼ばれる画像表示装置が、様々な分野で広く利用されている。例えば、手術室内で用いられる医療用モニタ装置にもＦＰＤが利用されるといった具合である。   2. Description of the Related Art Conventionally, an image display device called an FPD (flat panel display) including an image display panel such as a liquid crystal display panel or an organic EL (electroluminescence) panel has been widely used in various fields. For example, the FPD is also used in a medical monitor device used in an operating room.

ところで、医療用モニタ装置のように特殊な環境（例えば患者近傍）で使用される画像表示装置については、装置内冷却のための放熱孔を有していると、その放熱孔から血液や薬液等が装置内に侵入して故障を招いたり、装置内部に堆積した埃等が放熱孔から噴出したりするおそれがある。その一方で、単に放熱孔を廃止したのでは、装置内部の温度が上昇して、画像表示パネルやこれを動作させるための電子部品等に熱的ダメージを与えてしまい、装置寿命が著しく損なわれる可能性がある。   By the way, for an image display device used in a special environment (for example, in the vicinity of a patient) such as a medical monitor device, if there is a heat radiating hole for cooling in the device, blood, drug solution, etc. May enter the apparatus and cause a failure, or dust accumulated in the apparatus may be ejected from the heat radiation hole. On the other hand, if the heat dissipation holes are simply abolished, the temperature inside the device rises, causing thermal damage to the image display panel and electronic parts for operating the image display panel, and the life of the device is significantly impaired. there is a possibility.

これらのことから、画像表示装置の中には、特殊な環境での使用にも適するように、放熱孔や通気孔等を備えておらず、しかもその場合であっても装置内部の温度が上昇してしまうのを防ぐべく、画像表示パネルを熱伝導シートや金属性フレーム等を用いて固定し、その画像表示パネルで発生する熱を金属性フレームへの熱伝達によって逃がすように構成されたものがある（例えば、特許文献１参照）。   For these reasons, some image display devices are not equipped with heat radiating holes or vent holes so that they are suitable for use in special environments, and even in that case, the temperature inside the device rises. In order to prevent this, the image display panel is fixed using a heat conductive sheet or a metal frame, and the heat generated in the image display panel is released by heat transfer to the metal frame. (For example, refer to Patent Document 1).

特開２００５−３３８１７８号公報JP 2005-338178 A

しかしながら、近年、画像表示装置に対しては、パネルサイズの大型化や、薄型化のための高密度設計等が強く要求されているが、これらの事項は装置内部温度を上昇させる要因となり得るため、その要求に応えるためには、更なる放熱性能の向上が必要であると考えられる。   However, in recent years, image display devices have been strongly demanded to increase the panel size and to have a high-density design for thinning. However, these items can increase the internal temperature of the device. In order to meet the demand, it is considered that further improvement in heat dissipation performance is necessary.

そこで、本発明は、放熱孔が許されない特殊な環境での使用にも対応しつつ、その場合であっても装置内部の温度上昇を抑制することができ、これにより安定した画像表示性能を長期にわたって維持することのできる画像表示装置を提供することを目的とする。   Therefore, the present invention can be used in a special environment where a heat radiating hole is not allowed, and even in such a case, the temperature rise inside the apparatus can be suppressed, thereby providing stable image display performance for a long time. An object of the present invention is to provide an image display device that can be maintained over a wide range.

本発明は、上記目的を達成するために案出された画像表示装置で、画像表示パネルの背面側を覆うように筐体内部に形成されたパネル背面室と、前記パネル背面室内からの排気のために当該パネル背面室に設けられた排気口と、前記パネル背面室内への給気のために当該パネル背面室に設けられた給気口と、前記排気口と前記給気口とを結ぶとともに筐体外部との熱交換を行い得るように配された冷却用エア流路と、前記排気口および前記給気口を介して前記パネル背面室内と前記冷却用エア流路との間で空気を循環させる空気循環手段とを備えることを特徴とする。   The present invention is an image display device devised to achieve the above object, and includes a panel back chamber formed inside the casing so as to cover the back side of the image display panel, and exhaust from the panel back chamber. For this purpose, the exhaust port provided in the panel back chamber, the air supply port provided in the panel back chamber for supplying air to the panel back chamber, and the exhaust port and the air supply port are connected. Cooling air passages arranged so as to be able to exchange heat with the outside of the housing, and air between the panel back chamber and the cooling air passages via the exhaust ports and the air supply ports. And an air circulation means for circulation.

上記構成の画像表示装置では、画像表示パネルがその動作により発熱すると、その画像表示パネルの背面側を覆うパネル背面室内の空気温度が上昇する。ただし、そのパネル背面室内の空気は、空気循環手段が行う空気循環によって、排気口を通じて冷却用エア流路へ排気され、その冷却用エア流路での筐体外部との熱交換によって冷却され、その後に給気口を通じて再びパネル背面室内へ給気される。したがって、パネル背面室内と冷却用エア流路との間での空気循環によって、パネル背面室の内部が強制空冷されることになる。つまり、筐体外部への放熱のための放熱孔を要することなく、パネル背面室内の空気温度の上昇を、強制空冷を行うことによって効果的に抑制し得るようになる。   In the image display device having the above configuration, when the image display panel generates heat due to its operation, the air temperature in the panel back surface chamber covering the back side of the image display panel increases. However, the air inside the panel back surface is exhausted to the cooling air flow path through the exhaust port by air circulation performed by the air circulation means, and is cooled by heat exchange with the outside of the housing in the cooling air flow path, Thereafter, the air is supplied again into the back panel room through the air supply port. Therefore, the inside of the panel back chamber is forcibly air-cooled by the air circulation between the panel back chamber and the cooling air flow path. That is, it is possible to effectively suppress an increase in the air temperature in the panel rear chamber by performing forced air cooling without requiring a heat radiating hole for radiating heat to the outside of the housing.

本発明によれば、放熱のための放熱孔が不要となるので、例えば医療用モニタ装置のように特殊な環境で使用に適切に対応することができる。しかも、その場合であっても、パネル背面室の内部が強制空冷されるので、装置内部の温度上昇を効果的に抑制することができ、結果として安定した画像表示性能を長期にわたって維持することが可能となる。   According to the present invention, since a heat radiating hole for radiating heat is not necessary, it can be appropriately used in a special environment such as a medical monitor device. Moreover, even in such a case, the inside of the panel back chamber is forcibly air-cooled, so that the temperature rise inside the apparatus can be effectively suppressed, and as a result, stable image display performance can be maintained over a long period of time. It becomes possible.

以下、図面に基づき本発明に係る画像表示装置について説明する。図１は、本発明に係る画像表示装置の概略構成例を示す説明図である。   Hereinafter, an image display apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration example of an image display device according to the present invention.

図例のように、ここで説明する画像表示装置は、液晶表示パネルや有機ＥＬパネル等といった画像表示を行う画像表示パネル１が、前面筐体２および後面筐体３からなる筐体の内部に収納されて構成されている。そして、前面筐体２には、画像表示パネル１における画像表示領域に合わせて開口２ａが設けられているとともに、後面筐体３は、固定用スタンド４によって支持されるようになっている。   As shown in the figure, the image display device described here includes an image display panel 1 that performs image display, such as a liquid crystal display panel or an organic EL panel, in a casing including a front casing 2 and a rear casing 3. It is housed and configured. The front housing 2 is provided with an opening 2 a corresponding to the image display area in the image display panel 1, and the rear housing 3 is supported by a fixing stand 4.

筐体を構成する前面筐体２および後面筐体３、すなわち筐体外殻は、金属部材によって形成されている。さらに、筐体外殻は、その外表面が塗膜で覆われている。ただし、金属部材の種類および塗膜の種類は、特に限定されるものではない。なお、筐体外殻には、装置内冷却のための放熱孔が設けられていない。   The front casing 2 and the rear casing 3, that is, the casing outer shell constituting the casing, are formed of a metal member. Furthermore, the outer surface of the housing outer shell is covered with a coating film. However, the kind of metal member and the kind of coating film are not particularly limited. Note that the housing outer shell is not provided with a heat radiating hole for cooling the inside of the apparatus.

また、前面筐体２および後面筐体３からなる筐体の内部には、画像表示パネル１に加えて、その画像表示パネル１を動作させるための電子部品が実装された電子基板５が配設されている。この電子基板５上の電子部品によって、画像表示パネル１の駆動回路が構成されるのである。   In addition to the image display panel 1, an electronic substrate 5 on which electronic components for operating the image display panel 1 are mounted is disposed inside the housing including the front housing 2 and the rear housing 3. Has been. The electronic components on the electronic substrate 5 constitute a drive circuit for the image display panel 1.

さらに、前面筐体２および後面筐体３からなる筐体の内部には、パネル背面室６と、電子部品収容室７と、冷却用エア流路８とが形成されている。   Furthermore, a panel back chamber 6, an electronic component storage chamber 7, and a cooling air flow path 8 are formed inside the casing including the front casing 2 and the rear casing 3.

パネル背面室６は、画像表示パネル１の背面側（画像表示面ではない側）を覆うように形成された空間である。このパネル背面室６の形成は、例えば画像表示パネル１および電子基板５を筐体内部に支持固定するための部材、さらに具体的にはこれらの支持固定ブラケットとなる板金部材を利用して行うことが考えられる。また、パネル背面室６には、当該パネル背面室６内からの排気を行うための排気口６ａと、当該パネル背面室６内への給気を行うための給気口６ｂとが設けられているものとする。なお、排気口６ａおよび給気口６ｂの形成数および形成位置は、画像表示パネル１のサイズや筐体形状等に応じて適宜決定すればよく、特に限定されるものではない。   The panel back chamber 6 is a space formed so as to cover the back side (the side that is not the image display surface) of the image display panel 1. The panel back chamber 6 is formed using, for example, a member for supporting and fixing the image display panel 1 and the electronic substrate 5 inside the housing, more specifically, a sheet metal member serving as a supporting and fixing bracket. Can be considered. The panel back chamber 6 is provided with an exhaust port 6a for exhausting air from the panel back chamber 6 and an air supply port 6b for supplying air into the panel back chamber 6. It shall be. The number and positions of the exhaust ports 6a and the air supply ports 6b may be determined as appropriate according to the size of the image display panel 1, the shape of the housing, and the like, and are not particularly limited.

電子部品収容室７は、電子基板５を収容するように形成された空間である。ただし、電子部品収容室７は、パネル背面室６と機密分離されているものとする。そのために、パネル背面室６と電子部品収容室７との間、さらに詳しくはパネル背面室６を形成する板金部材と後面筐体３との間は、ガスケット７ａが配されており、そのガスケット７ａによって遮蔽されている。   The electronic component storage chamber 7 is a space formed to store the electronic substrate 5. However, it is assumed that the electronic component storage chamber 7 is secretly separated from the panel back chamber 6. For this purpose, a gasket 7a is arranged between the panel back chamber 6 and the electronic component housing chamber 7, more specifically between the sheet metal member forming the panel back chamber 6 and the rear housing 3, and the gasket 7a. It is shielded by.

ガスケット７ａは、パネル背面室６と電子部品収容室７との機密分離という機能を実現するために、パネル背面室６を形成する板金部材および後面筐体３の形状に追従する柔軟性を有した部材によって形成されている。しかも、ガスケット７ａは、単にパネル背面室６と電子部品収容室７とを機密分離するだけでなく、パネル背面室６と電子部品収容室７とを電気的に遮蔽する機能をも実現するようになっている。これらの機能を満足する部材としては、例えば真鍮のような硬度の低い金属部材や、金属部材を心材として含んで構成されたスポンジ部材を用いることが考えられる。   The gasket 7 a has flexibility to follow the shape of the sheet metal member forming the panel back chamber 6 and the rear housing 3 in order to realize the function of secrecy separation between the panel back chamber 6 and the electronic component storage chamber 7. It is formed by a member. In addition, the gasket 7a not only secretly separates the panel back chamber 6 and the electronic component storage chamber 7, but also realizes a function of electrically shielding the panel back chamber 6 and the electronic component storage chamber 7. It has become. As a member satisfying these functions, for example, a metal member having a low hardness such as brass, or a sponge member configured to include a metal member as a core material may be used.

また、電子部品収容室７内には、後面筐体３と電子基板５とを接した状態にするための熱伝導部材７ｂが配されている。この熱伝導部材７ｂは、熱伝達を良好に行い得るものを公知部材の中から選択して用いればよく、金属部材であっても非金属部材であっても構わない。   Further, in the electronic component housing chamber 7, a heat conducting member 7 b is disposed for bringing the rear housing 3 and the electronic substrate 5 into contact with each other. The heat conducting member 7b may be selected from known members that can perform heat transfer well, and may be a metal member or a non-metallic member.

冷却用エア流路８は、パネル背面室６に設けられた排気口６ａと給気口６ｂとを結ぶエア流路からなるものであり、前面筐体２の内部にて画像表示パネル１の周囲を囲うように、かつ、筐体外殻を構成する前面筐体２に面するように配されている。そして、冷却用エア流路８を通過する空気が、筐体外部との熱交換を行い得るように構成されている。なお、冷却用エア流路８は、必ずしも画像表示パネル１の周囲を囲う位置に配する必要はなく、パネル背面室６および電子部品収容室７とは別に配されていれば、筐体内部のいずれの箇所に配しても構わないが、筐体外殻に面するように配することが望ましい。筐体外殻に面していれば、その体外殻を通じて筐体外部との熱交換を行うことが可能となり、筐体外部との熱交換のために熱伝導部材等を必要とすることがないからである。   The cooling air flow path 8 is composed of an air flow path connecting the exhaust port 6 a and the air supply port 6 b provided in the panel back chamber 6, and surrounds the image display panel 1 inside the front housing 2. , And so as to face the front case 2 constituting the outer shell of the case. And the air which passes the cooling air flow path 8 is comprised so that heat exchange with the exterior of a housing | casing can be performed. The cooling air flow path 8 is not necessarily arranged at a position surrounding the periphery of the image display panel 1. If the cooling air flow path 8 is arranged separately from the panel back chamber 6 and the electronic component storage chamber 7, Although it may be arranged at any location, it is desirable to arrange it so as to face the outer shell of the casing. If it faces the outer shell, heat exchange with the outside of the housing can be performed through the outer shell, and a heat conduction member or the like is not required for heat exchange with the outside of the housing. It is.

このような冷却用エア流路８またはパネル背面室６の少なくとも一方の内部には、排気口６ａおよび給気口６ｂを介してパネル背面室６の内部と冷却用エア流路８との間で空気を循環させるための空気循環手段として、電動ファン９が配設されている。この電動ファン９は、筐体内部に配された温度センサ（ただし不図示）での検出結果に基づいて、その動作制御が行われるものとする。例えば、温度検出結果が低いときは、ファン回転数を抑えて、電動ファン９による騒音発生を抑制するといった具合である。なお、電動ファン９の配設数および配置位置は、パネル背面室６や冷却用エア流路８の容量や形状等に応じて適宜決定すればよく、特に限定されるものではない。また、空気循環が可能であれば、電動ファン９以外のものを利用しても構わない。   At least one of the cooling air flow path 8 and the panel back chamber 6 is provided between the inside of the panel back chamber 6 and the cooling air flow path 8 via the exhaust port 6a and the air supply port 6b. An electric fan 9 is provided as an air circulating means for circulating air. It is assumed that the electric fan 9 is controlled in operation based on a detection result of a temperature sensor (not shown) disposed in the housing. For example, when the temperature detection result is low, the fan rotation speed is suppressed and noise generation by the electric fan 9 is suppressed. The number and position of the electric fans 9 may be appropriately determined according to the capacity and shape of the panel back chamber 6 and the cooling air flow path 8, and are not particularly limited. Moreover, as long as air circulation is possible, you may utilize things other than the electric fan 9. FIG.

以上のように構成された画像表示装置では、画像表示パネル１がその動作により発熱すると、その画像表示パネル１の背面側を覆うパネル背面室６内の空気温度が上昇する。ただし、このとき、電動ファン９を駆動させれば、パネル背面室６内の空気は、その電動ファン９が空気循環手段として機能することによって、排気口６ａを通じて冷却用エア流路８へ排気される。冷却用エア流路８へ排気された空気は、冷却用エア流路８内を通過する際に、その冷却用エア流路８での筐体外部との熱交換によって冷却される。そして、冷却された空気は、電動ファン９が空気循環手段として機能しているので、給気口６ｂを通じて、再び冷却用エア流路８からパネル背面室６内へ給気されることになる。つまり、パネル背面室６内と冷却用エア流路８との間での空気循環によって、パネル背面室６の内部が強制空冷されるのである。したがって、筐体外殻が外部への放熱のための放熱孔を有していなくとも、パネル背面室６内の空気温度の上昇を、強制空冷を行うことによって効果的に抑制し得るようになる。   In the image display device configured as described above, when the image display panel 1 generates heat by its operation, the air temperature in the panel back chamber 6 that covers the back side of the image display panel 1 rises. However, if the electric fan 9 is driven at this time, the air in the panel back surface chamber 6 is exhausted to the cooling air flow path 8 through the exhaust port 6a by the electric fan 9 functioning as an air circulation means. The When the air exhausted to the cooling air flow path 8 passes through the cooling air flow path 8, it is cooled by heat exchange with the outside of the housing in the cooling air flow path 8. Then, since the electric fan 9 functions as an air circulation means, the cooled air is supplied again from the cooling air flow path 8 into the panel back chamber 6 through the air supply port 6b. That is, the inside of the panel back chamber 6 is forcibly air-cooled by the air circulation between the panel back chamber 6 and the cooling air flow path 8. Therefore, even if the housing outer shell does not have a heat radiating hole for radiating heat to the outside, an increase in the air temperature in the panel back chamber 6 can be effectively suppressed by performing forced air cooling.

このように、本実施形態で説明した画像表示装置によれば、温度上昇抑制（放熱）のための放熱孔が不要となるので、例えば医療用モニタ装置のように特殊な環境で使用される場合であっても、これに適切に対応することができる。しかも、その場合であっても、パネル背面室６の内部が強制空冷されるので、装置内部の温度上昇を効果的に抑制することができ、結果として安定した画像表示性能を長期にわたって維持することが可能となる。つまり、放熱孔が許されない特殊な環境での使用にも対応しつつ、その場合であっても装置内部の温度上昇を抑制することができ、これにより安定した画像表示性能を長期にわたって維持できるのである。   As described above, according to the image display device described in the present embodiment, since a heat dissipation hole for suppressing temperature rise (heat dissipation) is not necessary, for example, when used in a special environment such as a medical monitor device. Even so, this can be handled appropriately. Moreover, even in that case, the inside of the panel back chamber 6 is forcibly air-cooled, so that the temperature rise inside the apparatus can be effectively suppressed, and as a result, stable image display performance can be maintained over a long period of time. Is possible. In other words, while supporting use in special environments where heat dissipation holes are not allowed, temperature rise inside the device can be suppressed even in that case, and stable image display performance can be maintained over a long period of time. is there.

また、本実施形態で説明した画像表示装置では、筐体の内部に、パネル背面室６および冷却用エア流路８に加えて、電子部品収容室７が形成されるとともに、パネル背面室６と電子部品収容室７とが機密分離されている。すなわち、強制空冷によって空気が循環するのは、パネル背面室６と冷却用エア流路８との間のみであり、その強制空冷の影響が電子部品収容室７の内部には及ばない。このように、筐体内部を複数の空間に分け、かつ、冷却対象となる空間を限定すれば、強制空冷による冷却効果を冷却対象となる空間に集中させることが可能となるので、筐体内部の全域を、冷却対象とする場合に比べて効率的に冷却を行うことができ、結果として冷却効果の向上が期待できる。したがって、放熱孔を利用することなく、筐体内部での空気循環によって強制空冷を行う場合に適用して、非常に好適なものであると言える。   Further, in the image display device described in the present embodiment, in addition to the panel back chamber 6 and the cooling air flow path 8, an electronic component housing chamber 7 is formed inside the housing, and the panel back chamber 6 The electronic component storage chamber 7 is secretly separated. That is, air is circulated only by the forced air cooling between the panel back chamber 6 and the cooling air flow path 8, and the influence of the forced air cooling does not reach the inside of the electronic component housing chamber 7. Thus, if the interior of the housing is divided into a plurality of spaces and the space to be cooled is limited, the cooling effect by forced air cooling can be concentrated in the space to be cooled. As compared with the case where the entire area is set as a cooling target, the cooling can be efficiently performed, and as a result, an improvement in the cooling effect can be expected. Therefore, it can be said that the present invention is very suitable when applied to the case where forced air cooling is performed by air circulation inside the housing without using the heat radiating holes.

ところで、一般に、画像表示装置の筐体内部に収容される画像表示パネル１や電子基板５上の電子部品等については、予め動作許容温度が設定されている。例えば、画像表示パネル１は６０℃程度であり、電子基板５上の電子部品等は７０℃程度である。このように、画像表示パネル１は、発熱量が多く、かつ、動作許容温度が低いのに対し、電子基板５上の電子部品等は比較的熱に強い。
このことから、本実施形態で説明したように、パネル背面室６と電子部品収容室７とを機密分離し、その機密分離された電子部品収容室７の側に画像表示パネル１を動作させるための電子部品が実装された電子基板５を収容すれば、その電子部品収容室７には画像表示パネル１よりも動作許容温度の高い電子部品が収容されることになる。つまり、発熱量が多く、かつ、動作許容温度が低い画像表示パネル１を収容するパネル背面室６の側に、強制空冷による冷却効果を集中させることになる。
したがって、筐体内部に収容される構成部品の動作許容温度によって当該構成部品を区分し、例えば比較的熱に弱い画像表示パネル１とそれ以外といった基準に従いつつ各構成部品を別々に収容すれば、強制空冷による冷却効果を、比較的熱に弱い画像表示パネル１に対して有効に発揮させ得るようになる。つまり、動作許容温度に着目することで、冷却効果の有効性を高められるので、画像表示パネル１が安定した画像表示性能を長期にわたって維持する上で非常に好適なものとなる。
なお、電子基板５上に実装された電子部品については、その電子基板５から熱伝導部材７ｂを介して後面筐体３へ熱が伝えられ、これにより放熱が行われることになる。すなわち、電子部品収容室７の内部については、従来と同様の手法で冷却される。これは、電子部品収容室７の内部に収容される電子部品は、比較的熱に強いものであるから、従来と同様の手法によっても十分に冷却することができるからである。 By the way, generally, for the image display panel 1 housed inside the housing of the image display device, the electronic components on the electronic substrate 5 and the like, an allowable operation temperature is set in advance. For example, the image display panel 1 is about 60 ° C., and the electronic components and the like on the electronic substrate 5 are about 70 ° C. Thus, the image display panel 1 generates a large amount of heat and has a low operation allowable temperature, whereas the electronic components on the electronic substrate 5 are relatively resistant to heat.
Therefore, as described in the present embodiment, the panel back chamber 6 and the electronic component storage chamber 7 are secretly separated, and the image display panel 1 is operated on the side of the electronic component storage chamber 7 that is secretly separated. If the electronic substrate 5 on which the electronic component is mounted is accommodated, the electronic component accommodating chamber 7 accommodates an electronic component having a higher allowable operation temperature than the image display panel 1. That is, the cooling effect by forced air cooling is concentrated on the side of the panel back chamber 6 that accommodates the image display panel 1 that generates a large amount of heat and has a low allowable operation temperature.
Therefore, if the component parts are classified according to the operation allowable temperature of the component parts accommodated in the housing, for example, each component part is accommodated separately while complying with a standard such as the image display panel 1 that is relatively weak against heat, and the like, The cooling effect by forced air cooling can be effectively exerted on the image display panel 1 which is relatively weak against heat. That is, since the effectiveness of the cooling effect can be enhanced by paying attention to the allowable operating temperature, the image display panel 1 is very suitable for maintaining stable image display performance over a long period of time.
In addition, about the electronic component mounted on the electronic board | substrate 5, heat is transmitted to the rear housing | casing 3 via the heat conductive member 7b from the electronic board | substrate 5, and, thereby, heat dissipation is performed. That is, the inside of the electronic component housing chamber 7 is cooled by the same method as in the conventional art. This is because the electronic components housed in the electronic component housing chamber 7 are relatively resistant to heat and can be sufficiently cooled by the same method as in the prior art.

また、本実施形態で説明したように、パネル背面室６と電子部品収容室７とを機密分離するのにあたり、その間をガスケット７ａによって遮蔽すれば、そのガスケット７ａの存在により電子部品収容室７の側の熱がパネル背面室６の側に伝わってしまうのを抑制し得るので、この点によっても画像表示パネル１に対する冷却効果の向上が期待できる。しかも、ガスケット７ａは、金属部材または金属部材を含んで構成された部材からなるので、熱のみならず電気的な遮蔽（電波ノイズ等の遮蔽）も行うことができ、画像表示パネル１が電子基板５上の電子部品からノイズ等の悪影響を受けるのを防止し得る。さらに、これら二つの機能は、ガスケット７ａが兼ね備えているので、当該二つの機能を実現するのに装置構成が複雑化してしまうといったことがない。   Further, as described in the present embodiment, when the panel back chamber 6 and the electronic component storage chamber 7 are secretly separated, if the space between them is shielded by the gasket 7a, the presence of the gasket 7a causes the electronic component storage chamber 7 to be separated. Since it is possible to suppress the heat on the side from being transmitted to the panel back chamber 6 side, an improvement in the cooling effect on the image display panel 1 can also be expected from this point. Moreover, since the gasket 7a is made of a metal member or a member including a metal member, not only heat but also electrical shielding (shielding of radio noise, etc.) can be performed, and the image display panel 1 is an electronic substrate. 5 can be prevented from being adversely affected by noise and the like. Furthermore, since the gasket 7a has these two functions, the apparatus configuration is not complicated to realize the two functions.

また、本実施形態で説明したように、強制空冷を行うための冷却用エア流路８を、筐体外殻に面するように配し、その筐体外殻を通じて冷却用エア流路８が筐体外部との熱交換を行うようにすれば、その筐体外殻を放熱手段として利用することが可能となり、装置構成の複雑化を抑制する上で非常に好適なものとなる。しかも、筐体外殻が放熱手段となるので、その放熱手段がデザインされた形状と一体化されることになり、冷却効果のみならず、意匠的にも優れた画像表示装置を提供することが容易に実現可能となる。   Further, as described in the present embodiment, the cooling air flow path 8 for performing forced air cooling is arranged so as to face the outer shell of the casing, and the cooling air flow path 8 is connected to the casing through the outer casing shell. If heat exchange with the outside is performed, the outer shell of the casing can be used as a heat radiating means, which is very suitable for suppressing the complexity of the apparatus configuration. In addition, since the outer shell of the casing serves as a heat radiating means, the heat radiating means is integrated with the designed shape, and it is easy to provide an image display device that is excellent not only in cooling effect but also in design. It becomes feasible.

特に、本実施形態で説明したように、筐体外殻を金属部材によって形成すれば、冷却用エア流路８内における空気の熱が筐体外殻に伝わり易くなり、さらに筐体外殻に伝わった熱が大気への伝導、表面での対流、赤外輻射等によって装置外部へ放熱され易くなるので、筐体外殻における放熱手段としての確実なものとすることができる。
なお、その場合には、本実施形態で説明したように、筐体外殻の外表面が塗膜で覆うことが望ましい。筐体外殻は、画像表示装置のユーザ等が触れる可能性があることから、塗膜によって熱伝導率を下げて、ユーザ等が熱を感じ難くするためである。 In particular, as described in the present embodiment, when the casing outer shell is formed of a metal member, the heat of the air in the cooling air flow path 8 is easily transmitted to the casing outer shell, and further the heat transferred to the casing outer shell. Is easily radiated to the outside of the apparatus by conduction to the atmosphere, convection on the surface, infrared radiation, and the like, so that it can be ensured as a heat radiating means in the housing outer shell.
In this case, as described in the present embodiment, it is desirable that the outer surface of the housing outer shell is covered with a coating film. This is because the outer shell of the housing may be touched by the user of the image display device, and thus the thermal conductivity is lowered by the coating film so that the user or the like does not feel heat.

なお、本実施形態では、本発明の好適な実施具体例について説明したが、本発明はその内容に限定されるものではなく、その要旨を逸脱しない範囲で適宜変更することが可能である。例えば、本実施形態では、医療用モニタ装置を構成する画像表示装置に適用すると好適である旨を説明したが、本発明は、画像表示パネルを備えてなる画像表示装置であれば、パーソナルコンピュータにおける表示ディスプレイ装置、携帯電話機に代表されるモバイル端末装置、各種測定機器におけるモニタ画面装置等といったように、様々なものに適用することが可能である。   In addition, although this embodiment demonstrated the suitable Example of this invention, this invention is not limited to the content, It can change suitably in the range which does not deviate from the summary. For example, in the present embodiment, it has been described that it is suitable to be applied to an image display device constituting a medical monitor device. However, the present invention can be applied to a personal computer as long as the image display device includes an image display panel. The present invention can be applied to various devices such as a display device, a mobile terminal device typified by a mobile phone, and a monitor screen device in various measuring devices.

本発明に係る画像表示装置の概略構成例を示す説明図であり、（ａ）はその側断面図、（ｂ）はＡ−Ａ断面図である。It is explanatory drawing which shows the schematic structural example of the image display apparatus which concerns on this invention, (a) is the sectional side view, (b) is AA sectional drawing.

符号の説明Explanation of symbols

１…画像表示パネル、２…前面筐体、３…後面筐体、５…電子基板、６…パネル背面室、６ａ…排気口、６ｂ…給気口、７…電子部品収容室、７ａ…ガスケット、８…冷却用エア流路、９…電動ファン   DESCRIPTION OF SYMBOLS 1 ... Image display panel, 2 ... Front housing, 3 ... Rear housing, 5 ... Electronic substrate, 6 ... Panel back room, 6a ... Exhaust port, 6b ... Air supply port, 7 ... Electronic component storage chamber, 7a ... Gasket , 8 ... Air flow path for cooling, 9 ... Electric fan

Claims (7)

画像表示パネルの背面側を覆うように筐体内部に形成されたパネル背面室と、
前記パネル背面室内からの排気のために当該パネル背面室に設けられた排気口と、
前記パネル背面室内への給気のために当該パネル背面室に設けられた給気口と、
前記排気口と前記給気口とを結ぶとともに筐体外部との熱交換を行い得るように配された冷却用エア流路と、
前記排気口および前記給気口を介して前記パネル背面室内と前記冷却用エア流路との間で空気を循環させる空気循環手段と
を備えることを特徴とする画像表示装置。 A panel back chamber formed inside the housing to cover the back side of the image display panel;
An exhaust port provided in the panel back chamber for exhausting from the panel back chamber;
An air supply opening provided in the panel back chamber for supplying air to the panel back chamber;
A cooling air flow path arranged to connect the exhaust port and the air supply port and perform heat exchange with the outside of the housing;
An image display device comprising: an air circulating means for circulating air between the panel back chamber and the cooling air flow path through the exhaust port and the air supply port. 前記パネル背面室に加えて、前記画像表示パネルを動作させるための電子部品を収容する電子部品収容室が筐体内部に形成されるとともに、前記パネル背面室と前記電子部品収容室とが機密分離されている
ことを特徴とする請求項１記載の画像表示装置。 In addition to the panel back chamber, an electronic component storage chamber for storing an electronic component for operating the image display panel is formed inside the housing, and the panel back chamber and the electronic component storage chamber are secretly separated. The image display device according to claim 1, wherein: 前記電子部品収容室には、前記画像表示パネルよりも動作許容温度の高い電子部品が収容される
ことを特徴とする請求項２記載の画像表示装置。 The image display apparatus according to claim 2, wherein an electronic component having an operation allowable temperature higher than that of the image display panel is stored in the electronic component storage chamber. 前記パネル背面室と前記電子部品収容室との間が、金属部材または金属部材を含んで構成された部材からなるガスケットによって遮蔽されている
ことを特徴とする請求項２記載の画像表示装置。 The image display device according to claim 2, wherein a space between the panel back chamber and the electronic component housing chamber is shielded by a metal member or a gasket made of a member including the metal member. 前記冷却用エア流路は、筐体外殻に面するように配されており、当該筐体外殻を通じて筐体外部との熱交換を行うものである
ことを特徴とする請求項１記載の画像表示装置。 The image display according to claim 1, wherein the cooling air flow path is disposed so as to face the housing outer shell, and performs heat exchange with the outside of the housing through the housing outer shell. apparatus. 前記筐体外殻は、金属部材によって形成されている
ことを特徴とする請求項５記載の画像表示装置。 The image display device according to claim 5, wherein the housing outer shell is formed of a metal member. 前記筐体外殻は、外表面が塗膜で覆われている
ことを特徴とする請求項６記載の画像表示装置。
The image display device according to claim 6, wherein an outer surface of the casing outer shell is covered with a coating film.
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