JPS6215729A - Indicator tube - Google Patents
Indicator tubeInfo
- Publication number
- JPS6215729A JPS6215729A JP61159877A JP15987786A JPS6215729A JP S6215729 A JPS6215729 A JP S6215729A JP 61159877 A JP61159877 A JP 61159877A JP 15987786 A JP15987786 A JP 15987786A JP S6215729 A JPS6215729 A JP S6215729A
- Authority
- JP
- Japan
- Prior art keywords
- window
- display
- space
- display tube
- transparent
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/24—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
- H01J7/26—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space by flow of fluid through passages associated with tube or lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/006—Arrangements for eliminating unwanted temperature effects
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は内側に表示スクリーンを備える表示ウィンドウ
を有する排気容器を具え、表示ウィンドウの外側前面に
該外面にほぼ平行に透明な第２ウィンドウを設け、これ
により表示ウィンドウと第２ウィンドウとの間にスペー
スを形成し、このスペースに透明な冷却液を層条に流す
ようにした表示管に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention comprises an exhaust container having a display window with a display screen therein, and a transparent second window provided on the outer front surface of the display window and substantially parallel to the outer surface, thereby separating the display window from the display window. The present invention relates to a display tube in which a space is formed between the display tube and the second window, and a transparent cooling liquid is allowed to flow in layers into this space.
この種表示管はすでに公開されたオランダ国特許願第８
３００１１４号明細書に記載されている。This type of display tube has already been published in Dutch patent application No. 8.
It is described in the specification of No. 300114.
所望の高輝度を得るために表示スクリーンを大ビーム電
流による電子ビームで走査するようにしたテレビジョン
投射用の表示管においてはこれを冷却する問題が重要で
ある。In a display tube for television projection, in which the display screen is scanned by an electron beam with a large beam current in order to obtain a desired high brightness, the problem of cooling the display screen is important.
冷却液を層状に流すことによって冷却液に不均等が生ず
るのを防止し、従って表示画像に屈折パターンとして表
わされる屈折率に差が生ずるのを防止することができる
。By flowing the coolant in layers, it is possible to prevent non-uniformities in the coolant and thus to prevent differences in the refractive index represented as a refraction pattern in the displayed image.
この目的のため、一般に表示ウィンドウと第２ウィンド
ウとの管のスペースをほぼ３〜４ｍｍとしている。For this purpose, the tube spacing between the display window and the second window is generally approximately 3-4 mm.
上述した表示管により良好な結果が得られるが、表示管
に一層の改善を加える得ることを確かめた。Although good results are obtained with the display tube described above, it has been determined that further improvements can be made to the display tube.
これらの改善とは、表示ウィンドウ及び第２ウィンドウ
管のスペースに冷却液を流すと共に構成を簡単化して表
示管の部品数を少な（し、且つ、組立て及び分解を簡単
化し得ることである。These improvements include allowing cooling fluid to flow into the space of the display window and second window tube, and simplifying the construction, reducing the number of parts in the display tube and simplifying assembly and disassembly.
本発明の目的は、上述した改善を少なくとも充分に行い
得るようにした上述した種類の表示管を提供せんとする
にある。It is an object of the invention to provide a display tube of the above-mentioned type in which the above-mentioned improvements can be achieved at least to a sufficient extent.
本発明は内側に表示スクリーンを備える表示ウィンドウ
を有する排気容器を具“え、表示ウィンドウの外側前面
に該外面にほぼ平行に透明な第２ウィンドウを設け、こ
れにより表示ウィンドウと第２ウィンドウとの間にスペ
ースを形成し、このスペースに透明な冷却液を層条に流
すようにしだ表示管において、前記第２ウィンドウにほ
ぼ平行に且つその表示ウィンドウとは反対側の前面に第
３ウィンドウを設け、該第３ウィンドウは前記第２ウィ
ンドウと相俟って前記透明な冷却液を内蔵する第２スペ
ースを形成し、該第２スペースを表示管の光通路の外側
で前記第１スペースと連通し、前記光通路の外側に閉成
冷却装置を設け、該冷却装置を前記第１及び第２スペー
スと連通し、これにより第２スペース内の透明冷却液が
前記第１スペース内の透明冷却液とは逆方向に流れるよ
うにしたことを特徴とする。The present invention comprises an exhaust container having a display window with a display screen therein, and a transparent second window is provided on the outer front surface of the display window, substantially parallel to the outer surface, so that the display window and the second window are connected to each other. In the display tube, a third window is provided on the front surface on the opposite side from the display window and substantially parallel to the second window. , the third window together with the second window forms a second space containing the transparent cooling liquid, and communicates the second space with the first space outside the optical path of the display tube. , a closed cooling device is provided outside the optical path, and the cooling device is in communication with the first and second spaces, so that the transparent cooling liquid in the second space is connected to the transparent cooling liquid in the first space. is characterized by flowing in the opposite direction.
本発明表示管では、ホース、ポンプ及び関連する配置を
省略し得るため、冷却装置及び第２ウィンドウを特に簡
単に組立て及び分解すことができる。又、閉成冷却装置
により冷却を行うことによって、表示管を任意の好適な
角度で用いることができる。In the display tube of the invention, the cooling device and the second window can be assembled and disassembled particularly easily, since hoses, pumps and associated arrangements can be omitted. Furthermore, by cooling with a closed cooling device, the display tube can be used at any suitable angle.
開成冷却装置を光通路の外側に用いることによって光通
路にガラス部品を用いる必要はなく、例えば第２及び第
３ウィンドウに対し合成樹脂を用いることができ、しか
も冷却装置に金属部品を用いることができる。By using the open cooling device outside the optical path, there is no need to use glass parts for the optical path, and for example, synthetic resin can be used for the second and third windows, and metal parts can be used for the cooling device. can.
本発明表示管の好適な例では第３ウィンドウをレンズ系
の一部分で構成する。In a preferred embodiment of the display tube of the present invention, the third window is constituted by a part of the lens system.
かかる構成とすることによってレンズ系に対し表示管を
迅速且つ正確に位置決めすることができる。又、ウィン
ドウと冷却液との光結合を好適なものとすることができ
る。この目的のため、冷却液の屈折率及び表示ウィンド
ウ、第２ウィンドウ並びに第３ウィンドウの屈折率を互
いに適合させるようにする。With this configuration, the display tube can be positioned quickly and accurately with respect to the lens system. Moreover, the optical coupling between the window and the cooling liquid can be made favorable. For this purpose, the refractive index of the coolant and the refractive index of the display window, the second window and the third window are matched to each other.
図面につき本発明を説明する。The invention will be explained with reference to the drawings.
図面に示す本発明表示管はほぼ矩形状の表示ウィンドウ
２を有する排気エンベロープｌを具え、表示ウィンドウ
２にはその内側に表示スクリーン３を設けると共にその
外側の前方に、外面にほぼ平行に透明な第２ウィンドウ
４を設け、これにより表示ウィンドウ２及び第２ウィン
ドウ４間にスペース５を形成し、このスペース５に透明
な冷却液を層状に流し得るようにする。The display tube of the invention shown in the drawing comprises an exhaust envelope l having a substantially rectangular display window 2, which is provided with a display screen 3 on the inside thereof and a transparent window 3 on the outside and in front thereof, approximately parallel to the outer surface. A second window 4 is provided, which forms a space 5 between the display window 2 and the second window 4, into which a transparent cooling liquid can flow in a layered manner.
本発明表示管ではスペース５に透明な液体を流すことに
より表示管の光通路の外側に熱交換器を具え得る閉成冷
却装置６を設け、これにより、表示管の動作中に加熱さ
れた冷却液を光通路の外側も冷却し得るようにする。更
に第２ウィンドウの表示ウィンドウ２とは反対側の前方
に表示ウィンドウにほぼ平行に第３ウィンドウ７を設け
、この第３ウィンドウ７及び第２ウィンドウ４によって
第２スペース８を形成し、これにより、表示ウィンドウ
２及び第２ウィンドウ４間の第１スペース５に、冷却さ
れた冷却液を加熱された冷却液とは逆の方向に流すよう
にする。第１スペース５及び第２スペース８は表示管の
光通路の外側で互いに連通ずる。冷却液の流れる方向は
矢印で示す。冷却装置にポンプを設けない場合には液体
を対流により流すようにする。In the display tube of the present invention, a closed cooling device 6 which can be provided with a heat exchanger is provided outside the optical path of the display tube by flowing a transparent liquid into the space 5, thereby cooling the heated during operation of the display tube. To allow liquid to be cooled also outside an optical path. Further, a third window 7 is provided in front of the second window on the opposite side from the display window 2, substantially parallel to the display window, and a second space 8 is formed by the third window 7 and the second window 4, thereby, The first space 5 between the display window 2 and the second window 4 allows the cooled coolant to flow in the opposite direction to the heated coolant. The first space 5 and the second space 8 communicate with each other outside the optical path of the display tube. The direction of coolant flow is indicated by an arrow. When the cooling device is not equipped with a pump, the liquid is caused to flow by convection.
第３ウィンドウ７はレンズ系の一部分で構成するのが好
適である。Preferably, the third window 7 is formed as part of a lens system.
表示ウィンドウ２及び第２ウィンドウ４間のスペースは
３〜４＋ｎｍとする。又第２ウィンドウ４及び第３ウィ
ンドウ７間のスペースも３〜４ｍｍとする。The space between the display window 2 and the second window 4 is 3 to 4+nm. Further, the space between the second window 4 and the third window 7 is also set to 3 to 4 mm.
冷却装置６は金属製、例えばアルミニウム製とし、これ
により簡単に良好な冷却を行い得るようにする。又、第
２ウィンドウ４及び第３ウィンドウ７は合成樹脂、例え
ばポリメチールメククリレートで造ることができ、この
場合その屈折率をグリコールの水溶液より成る冷却液の
屈折率に一致させるようにする。かようにして構成材料
と冷却液との間の光結合を簡単に行い、不所望な反射が
生ずるのを防止し得るようにする。本発明表示管の冷却
を上述したように行うことによって表示管を使用する角
度がこの冷却に殆ど影響を与えないようにする。The cooling device 6 is made of metal, for example aluminum, so that good cooling can be easily achieved. The second window 4 and the third window 7 can also be made of a synthetic resin, for example polymethyl meccrylate, in which case their refractive index is matched to the refractive index of the coolant consisting of an aqueous solution of glycol. In this way, the optical coupling between the component material and the cooling liquid can be easily achieved and undesired reflections can be prevented. By cooling the display tube of the present invention as described above, the angle at which the display tube is used has little effect on this cooling.
本発明表示管の実際の例では３０Ｗの電力及び２０℃の
室温で冷却液体の温度は多くとも４０℃まで上昇した。In a practical example of a display tube according to the invention, at a power of 30 W and a room temperature of 20°C, the temperature of the cooling liquid rose to at most 40°C.
この上昇温度は２時間後でも殆ど変化せず安定していた
。This increased temperature remained stable with almost no change even after 2 hours.
本発明によれば冷却装置の組立て及び分解が極めて簡単
であり、且つレンズ系に対する位置決めも簡単である。According to the present invention, assembly and disassembly of the cooling device is extremely simple, and positioning with respect to the lens system is also simple.
本発明は上述した例にのみ限定されるもではな
゛く、要旨を変更しない範囲内で種々の変更を加えるこ
とかできる。The present invention is not limited to the examples described above.
In addition, various changes can be made without changing the gist.
図面は本発明表示管の一例を示す縦断面図である。 The drawing is a longitudinal sectional view showing an example of the display tube of the present invention.
Claims (1)
する排気容器を具え、表示ウィンドウの外側前面に該外
面にほぼ平行に透明な第２ウィンドウを設け、これによ
り表示ウィンドウと第２ウィンドウとの間にスペースを
形成し、このスペースに透明な冷却液を層状に流すよう
にした表示管において、前記第２ウィンドウにほぼ平行
に且つその表示ウィンドウとは反対側の前面に第３ウィ
ンドウを設け、該第３ウィンドウは前記第２ウィンドウ
と相俟って前記透明な冷却液を内蔵する第２スペースを
形成し、該第２スペースを表示管の光通路の外側で前記
第１スペースと連通し、前記光通路の外側に閉成冷却装
置を設け、該冷却装置を前記第１及び第２スペースと連
通し、これにより第２スペース内の透明冷却液が前記第
１スペース内の透明冷却液とは逆方向に流れるようにし
たことを特徴とする表示管。 ２、第３ウィンドウをレンズ系の一部分で構成すように
したことを特徴とする特許請求の範囲第１項に記載の表
示管。[Scope of Claims] 1. An exhaust container having a display window with a display screen inside, a transparent second window provided on the outer front surface of the display window substantially parallel to the outer surface, so that the display window and the second In the display tube, in which a space is formed between the display tube and the transparent cooling liquid flows in this space in a layered manner, a third window is provided in the front surface on the opposite side from the display window and approximately parallel to the second window. , the third window together with the second window forms a second space containing the transparent cooling liquid, and the second space is connected to the first space outside the optical path of the display tube. a closed cooling device in communication and outside the optical path, the cooling device being in communication with the first and second spaces, such that the transparent cooling liquid in the second space is connected to the transparent cooling liquid in the first space. A display tube characterized by flowing in the opposite direction to the liquid. 2. The display tube according to claim 1, wherein the third window is constructed from a part of the lens system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8501993A NL8501993A (en) | 1985-07-11 | 1985-07-11 | PICTURE TUBE. |
| NL8501993 | 1985-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6215729A true JPS6215729A (en) | 1987-01-24 |
Family
ID=19846285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61159877A Pending JPS6215729A (en) | 1985-07-11 | 1986-07-09 | Indicator tube |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0209191B1 (en) |
| JP (1) | JPS6215729A (en) |
| KR (1) | KR930010599B1 (en) |
| CA (1) | CA1274577A (en) |
| DE (1) | DE3670724D1 (en) |
| ES (1) | ES2000473A6 (en) |
| NL (1) | NL8501993A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3418486B2 (en) * | 1994-09-06 | 2003-06-23 | 成興工業株式会社 | Height-adjustable folding chair |
| ES2113321B1 (en) * | 1996-06-07 | 1999-01-16 | Sony Corp | CATHODIC RAY TUBE OF THE LIQUID REFRIGERATION TYPE. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157938A (en) * | 1983-02-24 | 1984-09-07 | Sony Corp | Cathode ray tube device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0111979B1 (en) * | 1982-12-22 | 1987-03-18 | Philips Electronics Uk Limited | Means for cooling the faceplate of a cathode ray tube in a television projection system |
| NL8300114A (en) * | 1983-01-13 | 1984-08-01 | Philips Nv | PICTURE TUBE. |
| JPH07118260B2 (en) * | 1985-06-25 | 1995-12-18 | ソニー株式会社 | Cathode ray tube device |
-
1985
- 1985-07-11 NL NL8501993A patent/NL8501993A/en not_active Application Discontinuation
-
1986
- 1986-07-08 ES ES8600184A patent/ES2000473A6/en not_active Expired
- 1986-07-08 KR KR1019860005488A patent/KR930010599B1/en not_active IP Right Cessation
- 1986-07-08 EP EP86201199A patent/EP0209191B1/en not_active Expired - Lifetime
- 1986-07-08 DE DE8686201199T patent/DE3670724D1/en not_active Expired - Lifetime
- 1986-07-09 JP JP61159877A patent/JPS6215729A/en active Pending
- 1986-07-09 CA CA000513394A patent/CA1274577A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157938A (en) * | 1983-02-24 | 1984-09-07 | Sony Corp | Cathode ray tube device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL8501993A (en) | 1987-02-02 |
| DE3670724D1 (en) | 1990-05-31 |
| ES2000473A6 (en) | 1988-03-01 |
| KR930010599B1 (en) | 1993-10-30 |
| EP0209191A1 (en) | 1987-01-21 |
| CA1274577A (en) | 1990-09-25 |
| EP0209191B1 (en) | 1990-04-25 |
| KR870001631A (en) | 1987-03-17 |
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