JPH062337U - LCD projector liquid crystal cooler - Google Patents
LCD projector liquid crystal coolerInfo
- Publication number
- JPH062337U JPH062337U JP4203092U JP4203092U JPH062337U JP H062337 U JPH062337 U JP H062337U JP 4203092 U JP4203092 U JP 4203092U JP 4203092 U JP4203092 U JP 4203092U JP H062337 U JPH062337 U JP H062337U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- heat
- crystal panel
- air filter
- air
- 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.)
- Granted
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
(57)【要約】
【目的】 従来の液晶プロジェクタにおいて、エアフィ
ルターを付加する空冷方式の場合にエアフィルターのゴ
ミの目づまりにより、筐体内の温度上昇があり、内部部
品の壊れ、発火などの原因ともなるので、外気を取り入
れずに熱のみを筐体外に排出するエアフィルターを必要
としない液晶冷却器を提案する。
【構成】 集光レンズと偏光板とにより、光の光路系を
確保した箱内に液晶パネルがあり、ファンにより液晶パ
ネル周辺の媒体を対流させる。光源からの光が、液晶パ
ネルと偏光板で熱に変換された後、対流する媒体に熱を
伝え、放熱フィンと電子冷却素子よりなる冷却ユニット
で媒体の熱を外部へ排出する。
(57) [Abstract] [Purpose] In the conventional liquid crystal projector, when the air-cooling system with an air filter is added, the temperature inside the housing rises due to the clogging of dust on the air filter, causing damage to internal parts, ignition, etc. This is also a cause, so we propose a liquid crystal cooler that does not require an air filter that discharges only heat without taking in outside air. [Structure] A liquid crystal panel is provided in a box that secures an optical path system of light by a condenser lens and a polarizing plate, and a fan causes convection of a medium around the liquid crystal panel. After the light from the light source is converted into heat by the liquid crystal panel and the polarizing plate, the heat is transmitted to the convective medium, and the heat of the medium is discharged to the outside by the cooling unit including the radiation fins and the electronic cooling element.
Description
【０００１】[0001]
本考案は、液晶表示パネルを用いた投写型表示装置の冷却装置に関する。 The present invention relates to a cooling device for a projection display device using a liquid crystal display panel.
【０００２】[0002]
液晶プロジェクタ内において、光源より出射された光が、偏光板及び液晶パネ ルを通過する時に、その一部が吸収され、熱に変わるため、温度上昇を招く。 これにより、偏光板の劣化や液晶パネルの動作不順あるいは、こわれといった問 題が生じてくる。 In the liquid crystal projector, when the light emitted from the light source passes through the polarizing plate and the liquid crystal panel, part of the light is absorbed and converted into heat, which causes a rise in temperature. This causes problems such as deterioration of the polarizing plate, malfunction of the liquid crystal panel, and breakage.
【０００３】 これを防ぐために従来技術の一つである外気を筐体内に取り入れる空冷方式を 用いているが、この場合、外気と共に混入するゴミが液晶パネル等に付着するの をさけるため、エアフィルターを必要とする。このエアフィルターにより大部分 のゴミの混入をさけることができるが、微粒状のゴミ、例えば煙草の煙や塵埃等 はエアフィルターの捕集性能と圧力損失との関係にもよるがほとんど捕集するこ とができない。さらに、大部分のゴミを付着させたエアフィルターは、外気の吸 引が困難となり、その結果、内部の温度上昇を起こし、部品のこわれ、あるいは 発火の原因ともなる。To prevent this, an air-cooling method, which is one of the conventional techniques, in which outside air is taken into the housing is used. In this case, dust mixed with the outside air is prevented from adhering to the liquid crystal panel or the like, and therefore, an air filter is used. Need. Most of the dust can be avoided by this air filter, but most of the fine dust, such as cigarette smoke and dust, will be collected depending on the relationship between the air filter's collection performance and pressure loss. I can't do this. Further, most of the dust-adhered air filter has difficulty in sucking outside air, resulting in a rise in internal temperature, breakage of parts, or ignition.
【０００４】 この様な煙草の煙や塵埃等の付着対策として、液晶プロジェクタのケースを密 閉構造として、内部の気体を循環ファンで攪拌すると共に、光源で発生した熱を 光源周辺部に設けた吸熱体と熱伝導体を介してケースの外に設けた冷却装置から 放熱したり（例えば、特開平２−１３０５４２号公報）、液晶パネル及び偏光板 をエチレングリコール水溶液などの冷却液が充填されたパリレックスガラス製の 容器などに浸漬すること考えられている（例えば、特開昭６３−６７９７９、特 開平１−３０２３８６号公報）。As a measure against the attachment of such cigarette smoke and dust, the case of the liquid crystal projector has a closed structure, the gas inside is agitated by a circulation fan, and the heat generated by the light source is provided in the peripheral portion of the light source. Heat is radiated from a cooling device provided outside the case via a heat absorber and a heat conductor (for example, JP-A-2-130542), or the liquid crystal panel and the polarizing plate are filled with a cooling liquid such as an aqueous solution of ethylene glycol. It has been considered to immerse it in a container made of parillex glass (for example, JP-A-63-67979 and JP-A-1-302386).
【０００５】 尚、液晶パネルの冷却装置としては、液晶パネルにフレオンや水などの冷媒に よる冷却装置を密着させ、この冷媒を流体ポンプで循環させたり、圧縮機で圧縮 して放熱器から放熱したり（例えば、特開平１−１５９６８４、１−３１４２８ ７号公報）、液晶パネルと集光レンズと放熱器で囲まれた空間をエチレングリコ ールとグリセリンなどからなる冷却液で充填して、この放熱器を冷却ファンで冷 却したり（例えば、特開平２−２０４６８２、３−９１７１６号公報）、液晶パ ネルと冷媒を密閉した冷却容器の側面に取付け、この冷媒をペルチェ効果を利用 した電子冷却素子で冷却したり（例えば、実開平１−９２６３５号公報）、複数 の液晶表示ユニットを給気及び排気ダクトに接続して、この給気及び排気ダクト の上下にヒートパイプ式熱交換器と送風機とを設け、液晶表示ユニットの液晶パ ネルを冷却することが考えられている（例えば、特開昭６３−２７１４９０、６ ３−２７１４９１号公報）。As a liquid crystal panel cooling device, a cooling device using a refrigerant such as freon or water is closely attached to the liquid crystal panel, and this refrigerant is circulated by a fluid pump or compressed by a compressor to radiate heat from a radiator. Or (for example, JP-A-1-15968, 1-314287), the space surrounded by the liquid crystal panel, the condenser lens and the radiator is filled with a cooling liquid such as ethylene glycol and glycerin. This radiator is cooled by a cooling fan (for example, Japanese Patent Laid-Open Nos. 2-204682 and 3-91716), or is attached to the side of a cooling container in which a liquid crystal panel and a refrigerant are sealed, and the Peltier effect is used for this refrigerant. Cooling with an electronic cooling element (for example, Japanese Utility Model Laid-Open No. 1-92635), connecting a plurality of liquid crystal display units to the air supply and exhaust ducts, It has been considered that a heat pipe type heat exchanger and a blower are provided above and below to cool the liquid crystal panel of the liquid crystal display unit (for example, JP-A-63-271490, 63-271491).
【０００６】[0006]
前述におけるエアフィルターを付加した液晶プロジェクタのゴミによる個々の 問題を解決するため、外気を筐体に取り入れず、外気とは、熱の移動だけを行な う冷却器をもつ液晶プロジェクタを提供する。 In order to solve the individual problems caused by dust in the liquid crystal projector to which the air filter is added as described above, we will provide a liquid crystal projector that has a cooler that only transfers heat to the outside air without introducing it into the housing.
【０００７】[0007]
従って、本考案は、上述の目的を達成するために、液晶パネルと、この液晶パ ネルを収納し、且つ冷媒が充填された密閉型の容器と、この容器の中に設けられ 、且つ冷媒を循環するファンと、容器の一側面に設けられ、且つ冷媒と外気との 熱交換を行なうペルチェ効果を利用した電子冷却ユニットとを備えたものである 。 Therefore, in order to achieve the above-mentioned object, the present invention provides a liquid crystal panel, a hermetically-sealed container that accommodates the liquid crystal panel and is filled with a refrigerant, and is provided in the container. A circulating fan and an electronic cooling unit provided on one side surface of the container and utilizing the Peltier effect for exchanging heat between the refrigerant and the outside air are provided.
【０００８】[0008]
図１、図２は、液晶プロジェクタ内の液晶冷却器の実施例を示したものである 。 図１において、集光レンズ１と偏光板２とで光の光路系を確保した箱１０に吸熱 フィン３と放熱フィン４と電子冷却ユニット５からなる冷却ユニット９を取付け た。箱内の媒体７は、ファン６によって対流させ、液晶パネル８と偏光板２に発 生した熱を媒体７に伝達させた後、冷却ユニット９により、吸熱及び外部への放 熱を行なう。 図２は、図１を正面から見た場合の図である。 1 and 2 show an example of a liquid crystal cooler in a liquid crystal projector. In FIG. 1, a cooling unit 9 including a heat absorbing fin 3, a heat radiating fin 4 and an electronic cooling unit 5 is attached to a box 10 in which an optical path system of light is secured by a condenser lens 1 and a polarizing plate 2. The medium 7 in the box is convected by the fan 6 to transfer the heat generated in the liquid crystal panel 8 and the polarizing plate 2 to the medium 7, and then the cooling unit 9 absorbs heat and releases the heat to the outside. FIG. 2 is a diagram of FIG. 1 viewed from the front.
【０００９】[0009]
以上説明したように本考案は、従来の液晶プロジェクタの冷却方式のように外 気を取り入れることがない冷却器なので、エアフィルターのゴミの目づまり、微 粒状のゴミの混入などの問題の心配がない。 As described above, the present invention is a cooler that does not take in the outside air unlike the conventional liquid crystal projector cooling method, so there is a risk of problems such as clogging of dust on the air filter and mixing of fine dust. Absent.
【図１】本考案の実施例を示す略断面図である。FIG. 1 is a schematic sectional view showing an embodiment of the present invention.
【図２】図１に係わる、正面から見た略断面図である。FIG. 2 is a schematic cross-sectional view as seen from the front, related to FIG.
【符号の説明】 １ 集光レンズ ２ 偏光板 ３ 吸熱フィン ４ 放熱フィン ５ 電子冷却素子 ６ ファン ７ 媒体 ８ 液晶パネル ９ 冷却ユニット １０ 箱 １１ 仕切り板[Explanation of Codes] 1 Condensing lens 2 Polarizing plate 3 Endothermic fin 4 Radiating fin 5 Electronic cooling element 6 Fan 7 Medium 8 Liquid crystal panel 9 Cooling unit 10 Box 11 Partition plate
Claims (1)
し、且つ冷媒が充填された密閉型の容器と、この容器の
中に設けれれ、且つ冷媒を循環するファンと、容器の一
側面に設けられ、且つ冷媒と外気との熱交換を行なうペ
ルチェ効果を利用した電子冷却ユニットとを備えたこと
を特徴とする液晶プロジェクタの液晶冷却器。1. A liquid crystal panel, a hermetically-sealed container for accommodating the liquid crystal panel and filled with a refrigerant, a fan provided in the container and circulating a refrigerant, and provided on one side surface of the container. A liquid crystal cooler for a liquid crystal projector, further comprising: an electronic cooling unit that utilizes a Peltier effect for performing heat exchange between a refrigerant and the outside air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992042030U JP2585003Y2 (en) | 1992-06-18 | 1992-06-18 | Liquid crystal cooler for liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992042030U JP2585003Y2 (en) | 1992-06-18 | 1992-06-18 | Liquid crystal cooler for liquid crystal projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH062337U true JPH062337U (en) | 1994-01-14 |
| JP2585003Y2 JP2585003Y2 (en) | 1998-11-11 |
Family
ID=12624774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992042030U Expired - Lifetime JP2585003Y2 (en) | 1992-06-18 | 1992-06-18 | Liquid crystal cooler for liquid crystal projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585003Y2 (en) |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996030805A1 (en) * | 1995-03-30 | 1996-10-03 | Seiko Epson Corporation | Projection display |
| JP2007293105A (en) * | 2006-04-26 | 2007-11-08 | Sony Corp | Image display device |
| JP2011047761A (en) * | 2009-08-26 | 2011-03-10 | Kurita Water Ind Ltd | In-tank monitor |
| JP2012189795A (en) * | 2011-03-10 | 2012-10-04 | Harison Toshiba Lighting Corp | Apparatus for manufacturing liquid crystal panel and method for manufacturing liquid crystal panel |
| KR20150096650A (en) * | 2012-12-19 | 2015-08-25 | 마르셀 피터 제라드 마스 | Display apparatus |
| JP2017518526A (en) * | 2014-04-30 | 2017-07-06 | マニュファクチャリング・リソーシズ・インターナショナル・インコーポレーテッド | Back-to-back electronic display assembly |
| US10080316B2 (en) | 2009-11-13 | 2018-09-18 | Manufacturing Resources International, Inc. | Electronic display assembly having thermal cooling plate and optional convective air cooling loop |
| US10314212B2 (en) | 2008-12-18 | 2019-06-04 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
| US10359659B2 (en) | 2013-07-08 | 2019-07-23 | Manufactruing Resources Internatonal, Inc. | Cooling system for electronic display |
| US10398066B2 (en) | 2017-04-27 | 2019-08-27 | Manufacturing Resources International, Inc. | System and method for preventing display bowing |
| US10420257B2 (en) | 2008-03-26 | 2019-09-17 | Manufacturing Resources International, Inc. | System and method for maintaining a consistent temperature gradient across an electronic display |
| US10499516B2 (en) | 2017-04-27 | 2019-12-03 | Manufacturing Resources International, Inc. | Field serviceable and replaceable assembly |
| US10506740B2 (en) | 2008-03-03 | 2019-12-10 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US10506738B2 (en) | 2008-03-03 | 2019-12-10 | Manufacturing Resources International, Inc. | Constricted convection cooling for an electronic display |
| US10524397B2 (en) | 2013-03-15 | 2019-12-31 | Manufacturing Resources International, Inc. | Heat exchanger assembly for an electronic display |
| US10548247B2 (en) | 2015-02-17 | 2020-01-28 | Manufacturing Resources International, Inc. | Perimeter ventilation system |
| US10559965B2 (en) | 2017-09-21 | 2020-02-11 | Manufacturing Resources International, Inc. | Display assembly having multiple charging ports |
| US10795413B1 (en) | 2019-04-03 | 2020-10-06 | Manufacturing Resources International, Inc. | Electronic display assembly with a channel for ambient air in an access panel |
| US10827656B2 (en) | 2008-12-18 | 2020-11-03 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
| US11019735B2 (en) | 2018-07-30 | 2021-05-25 | Manufacturing Resources International, Inc. | Housing assembly for an integrated display unit |
| US11096317B2 (en) | 2019-02-26 | 2021-08-17 | Manufacturing Resources International, Inc. | Display assembly with loopback cooling |
| US11470749B2 (en) | 2020-10-23 | 2022-10-11 | Manufacturing Resources International, Inc. | Forced air cooling for display assemblies using centrifugal fans |
| US11477923B2 (en) | 2020-10-02 | 2022-10-18 | Manufacturing Resources International, Inc. | Field customizable airflow system for a communications box |
| US11744036B2 (en) | 2016-03-04 | 2023-08-29 | Manufacturing Resources International, Inc. | Cooling system for double sided display assembly |
| US11744054B2 (en) | 2021-08-23 | 2023-08-29 | Manufacturing Resources International, Inc. | Fan unit for providing improved airflow within display assemblies |
| US11762231B2 (en) | 2021-08-23 | 2023-09-19 | Manufacturing Resources International, Inc. | Display assemblies inducing turbulent flow |
| US11778757B2 (en) | 2020-10-23 | 2023-10-03 | Manufacturing Resources International, Inc. | Display assemblies incorporating electric vehicle charging equipment |
| US11919393B2 (en) | 2021-08-23 | 2024-03-05 | Manufacturing Resources International, Inc. | Display assemblies inducing relatively turbulent flow and integrating electric vehicle charging equipment |
| US11968813B2 (en) | 2021-11-23 | 2024-04-23 | Manufacturing Resources International, Inc. | Display assembly with divided interior space |
| US11966263B2 (en) | 2021-07-28 | 2024-04-23 | Manufacturing Resources International, Inc. | Display assemblies for providing compressive forces at electronic display layers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192635U (en) * | 1987-12-10 | 1989-06-16 | ||
| JPH04138418A (en) * | 1990-09-29 | 1992-05-12 | Toshiba Lighting & Technol Corp | Liquid crystal display device |
-
1992
- 1992-06-18 JP JP1992042030U patent/JP2585003Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192635U (en) * | 1987-12-10 | 1989-06-16 | ||
| JPH04138418A (en) * | 1990-09-29 | 1992-05-12 | Toshiba Lighting & Technol Corp | Liquid crystal display device |
Cited By (50)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996030805A1 (en) * | 1995-03-30 | 1996-10-03 | Seiko Epson Corporation | Projection display |
| JP2007293105A (en) * | 2006-04-26 | 2007-11-08 | Sony Corp | Image display device |
| US11013142B2 (en) | 2008-03-03 | 2021-05-18 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US10721836B2 (en) | 2008-03-03 | 2020-07-21 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US11540418B2 (en) | 2008-03-03 | 2022-12-27 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US11596081B2 (en) | 2008-03-03 | 2023-02-28 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US10506738B2 (en) | 2008-03-03 | 2019-12-10 | Manufacturing Resources International, Inc. | Constricted convection cooling for an electronic display |
| US10506740B2 (en) | 2008-03-03 | 2019-12-10 | Manufacturing Resources International, Inc. | Electronic display with cooling |
| US10420257B2 (en) | 2008-03-26 | 2019-09-17 | Manufacturing Resources International, Inc. | System and method for maintaining a consistent temperature gradient across an electronic display |
| US11191193B2 (en) | 2008-12-18 | 2021-11-30 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
| US10827656B2 (en) | 2008-12-18 | 2020-11-03 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
| US10314212B2 (en) | 2008-12-18 | 2019-06-04 | Manufacturing Resources International, Inc. | System for cooling an electronic image assembly with circulating gas and ambient gas |
| JP2011047761A (en) * | 2009-08-26 | 2011-03-10 | Kurita Water Ind Ltd | In-tank monitor |
| US10080316B2 (en) | 2009-11-13 | 2018-09-18 | Manufacturing Resources International, Inc. | Electronic display assembly having thermal cooling plate and optional convective air cooling loop |
| US10736245B2 (en) | 2009-11-13 | 2020-08-04 | Manufacturing Resources International, Inc. | Electronic display assembly with combined conductive and convective cooling |
| JP2012189795A (en) * | 2011-03-10 | 2012-10-04 | Harison Toshiba Lighting Corp | Apparatus for manufacturing liquid crystal panel and method for manufacturing liquid crystal panel |
| KR20150096650A (en) * | 2012-12-19 | 2015-08-25 | 마르셀 피터 제라드 마스 | Display apparatus |
| JP2016507768A (en) * | 2012-12-19 | 2016-03-10 | ペーテル ジェラルド マエス，マルセル | Display equipment |
| US10524397B2 (en) | 2013-03-15 | 2019-12-31 | Manufacturing Resources International, Inc. | Heat exchanger assembly for an electronic display |
| US10359659B2 (en) | 2013-07-08 | 2019-07-23 | Manufactruing Resources Internatonal, Inc. | Cooling system for electronic display |
| US10973156B2 (en) | 2014-04-30 | 2021-04-06 | Manufacturing Resources International, Inc. | Dual electronic display assembly |
| US10687446B2 (en) | 2014-04-30 | 2020-06-16 | Manufacturing Resources International, Inc. | Back to back electronic display assembly |
| JP2017518526A (en) * | 2014-04-30 | 2017-07-06 | マニュファクチャリング・リソーシズ・インターナショナル・インコーポレーテッド | Back-to-back electronic display assembly |
| US10194564B2 (en) | 2014-04-30 | 2019-01-29 | Manufacturing Resources International, Inc. | Back to back electronic display assembly |
| US10548247B2 (en) | 2015-02-17 | 2020-01-28 | Manufacturing Resources International, Inc. | Perimeter ventilation system |
| US11744036B2 (en) | 2016-03-04 | 2023-08-29 | Manufacturing Resources International, Inc. | Cooling system for double sided display assembly |
| US10398066B2 (en) | 2017-04-27 | 2019-08-27 | Manufacturing Resources International, Inc. | System and method for preventing display bowing |
| US10716224B2 (en) | 2017-04-27 | 2020-07-14 | Manufacturing Resources International, Inc. | Field serviceable and replaceable assembly |
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| US11032923B2 (en) | 2017-04-27 | 2021-06-08 | Manufacturing Resources International, Inc. | Field serviceable display assembly |
| US10499516B2 (en) | 2017-04-27 | 2019-12-03 | Manufacturing Resources International, Inc. | Field serviceable and replaceable assembly |
| US10757844B2 (en) | 2017-04-27 | 2020-08-25 | Manufacturing Resources International, Inc. | System and method for reducing or combating display bowing |
| US10925174B2 (en) | 2017-04-27 | 2021-02-16 | Manufacturing Resources International, Inc. | Field serviceable and replaceable assembly |
| US10559965B2 (en) | 2017-09-21 | 2020-02-11 | Manufacturing Resources International, Inc. | Display assembly having multiple charging ports |
| US11019735B2 (en) | 2018-07-30 | 2021-05-25 | Manufacturing Resources International, Inc. | Housing assembly for an integrated display unit |
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| US11617287B2 (en) | 2019-02-26 | 2023-03-28 | Manufacturing Resources International, Inc. | Display assembly with loopback cooling |
| US11096317B2 (en) | 2019-02-26 | 2021-08-17 | Manufacturing Resources International, Inc. | Display assembly with loopback cooling |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2585003Y2 (en) | 1998-11-11 |
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