EP0162971B1 - Tube cathodique de projection et dispositif de visualisation muni d'un tel tube - Google Patents

Tube cathodique de projection et dispositif de visualisation muni d'un tel tube Download PDF

Info

Publication number
EP0162971B1
EP0162971B1 EP84200784A EP84200784A EP0162971B1 EP 0162971 B1 EP0162971 B1 EP 0162971B1 EP 84200784 A EP84200784 A EP 84200784A EP 84200784 A EP84200784 A EP 84200784A EP 0162971 B1 EP0162971 B1 EP 0162971B1
Authority
EP
European Patent Office
Prior art keywords
window
cooling
tube
display tube
cooling jacket
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.)
Expired
Application number
EP84200784A
Other languages
German (de)
English (en)
Other versions
EP0162971A1 (fr
Inventor
Leendert Vriens
Gerrit Berend Gerritsen
Willem Meijndert Van Alphen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Priority to DE8484200784T priority Critical patent/DE3475140D1/de
Priority to EP84200784A priority patent/EP0162971B1/fr
Priority to ES543606A priority patent/ES8608733A1/es
Priority to DD85276815A priority patent/DD232588A5/de
Priority to CA000482869A priority patent/CA1243069A/fr
Priority to JP60116830A priority patent/JPS60264025A/ja
Priority to KR1019850003811A priority patent/KR920010663B1/ko
Publication of EP0162971A1 publication Critical patent/EP0162971A1/fr
Application granted granted Critical
Publication of EP0162971B1 publication Critical patent/EP0162971B1/fr
Priority to US07/298,378 priority patent/US4899080A/en
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • 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
    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof

Definitions

  • the invention relates to a projection picture tube with an evacuated envelope with an image window, which is provided on the inside with a screen and in front of which a translucent second window is arranged on the outside, the space between the image window and the second window of at least a cooling liquid flows from an inflow opening to at least one outflow opening, specifically as a result of temperature differences in this cooling liquid.
  • the invention also relates to an image display device having one or three such projection picture tubes.
  • Such a picture tube is known from the published Dutch patent application 8 003 360.
  • a raster is described on the screen, which usually has a phosphor layer or a pattern of different phosphors.
  • the temperature of the phosphor increases due to the electron bombardment, which reduces the light output of the screen ( «thermal quenching •).
  • This phenomenon occurs particularly in picture tubes for projection television, the screen being scanned by electron beams with large beam currents in order to obtain the large luminance required.
  • the temperature of the image window increases and a temperature gradient arises at the image window. This gradient causes a mechanical stress in the z. B. glass picture window.
  • thermal stress With a high electron beam current and consequently high thermal stress, this can lead to a break in the image window.
  • thermal stress thermo stress
  • the space between the image window and the second window filled with coolant is surrounded at the top and bottom and on the side by a metal heat sink that acts as a spacer and acts as a heat radiator.
  • the temperature rise of the picture window moves the coolant warmed up through the picture window up along the picture window and down along the second window, whereby the heat is also dissipated from the center of the picture window via the heat sink.
  • the heat is dissipated mainly by conduction to the second window.
  • the liquid flow described above occurs, with an associated but less effective additional cooling by the heat sink.
  • an embodiment has been described in which the cooling liquid is supplied from the top of the room through pipes or hoses and through a cooling chamber to the underside of the room by convection due to temperature differences in the cooling liquid.
  • a disadvantage of such a tube is that when the tube is replaced in a projector, the cooling liquid has to be removed and the hoses or tubes have to be detached from the picture tube.
  • a similar liquid cooling system has been proposed in Dutch patent application 8 300 114, wherein a laminar flow of the cooling liquid along the image window is used at a flow rate of approximately 5 cm 3 / s.
  • a power of up to 60-80 W can be dissipated.
  • the cooling fluid flows back from the outflow opening to the inflow opening of the space through hoses or pipes and by means of a pump arranged in this hose or pipe system.
  • a cooling chamber heat exchanger
  • 60-80 W corresponds to an average beam current of 2-3 mA with peak currents of up to approximately 10 mA.
  • the object of the invention is, based on the prior art described above, to provide a picture tube with a cooling system which provides effective cooling at a power between 12 and 25-30 W.
  • the invention also has the task of creating a picture tube with cooling without additional tubes and individual heat exchangers.
  • a picture tube of the type described at the outset according to the invention is characterized in that a cooling jacket is arranged at the height of the windows and around the space mentioned, which is provided with at least one channel which connects the cooling liquid from the outflow leads to the inflow opening or openings of said space.
  • the cooling liquid With this cooling, the cooling liquid generally flows in a laminar manner along the warm picture window and absorbs heat there. The cooling liquid then flows from the outflow opening (s) through the channel in the cooling jacket, where the cooling liquid releases its heat to the cooling jacket, to the inflow opening (s).
  • the circulation of the liquid results in better temperature regulation than in the known cooling system with a simple cooling chamber. This further reduces the tension in the glass of the picture tube.
  • the free convection fluid flow due to temperature differences in the cooling fluid is relatively slow.
  • An essential tempera occurs difference ⁇ T (for example 10 ° C) between the temperatures of the coolant at the inlet and outlet openings.
  • ⁇ T for example 10 ° C
  • a ⁇ T of approximately 10 ° C. is obtained with a liquid flow of approximately 0.3 cm 3 / s for a liquid with a density p of 1 g / cm 3 and a heat capacity Cp of approximately 4.2 J / g ° C (1 cal / g ° C) as for water.
  • the required liquid flow is then only about 6% of the liquid flow of about 5 cm 3 / s for tubes according to the Dutch patent application 8 300 114 mentioned.
  • Another advantage of the picture tube according to the invention is that no outer tubes, hoses, heat exchangers and pumps are necessary, which makes it much easier to assemble the tube in a (projection) arrangement for displaying images.
  • the cooling in a picture tube according to the invention is much more effective than the cooling described in the first exemplary embodiment of the already mentioned Dutch patent application 8 003 360, because the cooling liquid between the picture window and the second window flows mainly in only one direction and is cooled in the cooling jacket.
  • the flow resistance in the channel or channels of the cooling jacket is preferably smaller than in the space between the image window and the second window. If this is the case, the liquid flow is more easily started by temperature differences.
  • At least the outer wall of the cooling jacket is preferably made of metal and is optionally provided with cooling fins.
  • this outer wall of the cooling jacket is preferably brought into thermal contact with a body with a high thermal output.
  • This body can be, for example, the holder with the lens system of the arrangement, which holder acts as a “heat sink”. It is also possible to force the ribs to cool with air.
  • a preferred embodiment of a picture tube according to the invention is characterized in that a channel, through which the cooling liquid flows, is partially covered by a seal which extends essentially parallel to the direction of flow in the room, e.g. B. a glass; or metal strip, between the image window and the second window. If two stripes are used on the two sides of the image window, they can also act as spacers between the image window and the second window.
  • the second window prefferably be the first element of the optical lens system of the image display device.
  • the tubes according to the invention can be arranged in an image display arrangement with their cooling jacket on a second cooling system.
  • This second cooling system for example liquid-filled pipes, can dissipate the heat from the cooling jacket to an appropriate location, for example to the rear of the arrangement.
  • This cooling system can be an integral part of the arrangement.
  • the coolant in this second system is only a requirement that it transports the heat well (good heat output and low viscosity). In this second system there are no requirements regarding contamination, optical transmission and refractive index of the liquid.
  • This second cooling system can also only be partially filled with a liquid that evaporates above a temperature of 40-50 ° C., in such a way that the second system acts as a “heat pipe”. The advantage of such a construction is the extremely effective heat transfer and the low filling weight.
  • FIG. 1 shows a diagrammatic, partially cut-away view of a picture tube according to the invention.
  • This picture tube contains a shell 1, which consists of a neck 2 and a cone 3 and is closed with a picture window 4.
  • a screen 5 (see FIG. 2) is arranged on the inside of this picture window.
  • a translucent second window 6 is provided essentially parallel to the outside of the image window 4.
  • a cooling jacket 8 is provided around the tube end at the level of the windows 4 and 6 and the space 7 lying between them.
  • This cooling jacket contains a channel 9 through an outer wall 10 of the cooling jacket, the side edge 11 of the second window 6, a glass strip 12, the edge of the picture window 4, the edge of the cone 14 and the Back wall 15 of the cooling jacket is limited.
  • any expansion differences between the outer wall 10 and the tube end can be compensated for by the flexible rear wall 15 of the cooling jacket.
  • the space 7 and the channel 9 are filled with cooling liquid 16 (for example water or an ethylene glycol / water mixture with a lower melting point and a higher boiling point than water).
  • the heat generated in the screen is absorbed by the coolant through the image window, which makes it locally warmer and moves to a higher point in the system.
  • the warm coolant leaves the space 7 via the outflow opening 17 indicated by dashed lines and enters the cooling jacket 8.
  • the cooling liquid partially emits the heat absorbed therein at the wall 10 and the rear wall 15 of the cooling jacket and overflows an inflow opening (not visible here) back into space 7.
  • the direction of flow of the coolant is indicated by arrows. Because the liquid flows around the tube end and is not cooled in a simple cooling chamber or in a heat exchanger, a better temperature compensation is obtained than in these systems with a simple cooling chamber.
  • a simple cooling chamber Such a tube, with water or with an 80% ethylene glycol-20% water mixture as the cooling liquid and with a screen with a 5-inch diagonal (12.7 cm) resulted in a constant temperature increase at a load of 28 W.
  • Coolant for the center of the image window of only 37 ⁇ 2 ° C.
  • the cooling jacket was provided with cooling fins and was cooled with air but not forced. There was also some additional cooling from contact with the device in which the tube was attached.
  • FIG. 2 shows a horizontal section through the tube according to FIG. 1, the section containing the central axis 18.
  • the reference numerals correspond to those in FIG. 1.
  • FIG. 1 A vertical section perpendicular to the tube axis 18 is shown in FIG.
  • the reference numerals again correspond to those in FIG. 1.
  • the cooling liquid 16 flows upward through the space 7 and leaves this space via the outflow opening 17 (dashed line) and then flows through the channel 9 of the cooling jacket 8 to the inflow opening 19 (dashed line).
  • FIG. 4a also shows a horizontal section through a tube according to the invention, in accordance with FIG. 2.
  • the image window 20 is curved in this case.
  • the second window is also curved.
  • the coolant now flows through the space between the curved picture window 20 and the second window 21.
  • the image can be optimized by choosing the radius of curvature of the second window 21 to be smaller than that of the image window 20, as shown in FIG. 4b, or by choosing an aspherical shape for the second window 21.
  • the outer wall 10 of the cooling jacket is provided with cooling fins 22.
  • the reference numerals for the parts which correspond to those in FIG. 1 are the same as in FIG. 1.
  • FIGS. 5a, b and c show a front view, a partial vertical section and a partial horizontal section through another embodiment of a picture tube according to the invention.
  • This picture tube contains an evacuated sheath 30, which consists of a neck (not shown), a cone 31 and a picture window 32, on which a screen 42 is attached.
  • a screen 42 is attached.
  • the outer wall of the cooling jacket is a U-shaped one arranged around the tube end at the height of the picture window 32, around the second window 33 and around the space 34 Metal profile 36. This profile presses the second window 33 against the glass strips 35.
  • the cooling liquid 37 flows through the space 34 between the image window 32 and the second window 33 due to temperature differences that occur when the tube is operated (arrows 38 in FIG. 5a ) and leaves the room 34.
  • the cooling liquid then flows through the channel 39 in the U-shaped profile 36, where this liquid gives off heat to the profile 36, and passes through the inflow opening back into the room 34 (arrows 40 in FIG. 5a) .
  • the tube can be fastened in a reproduction or projection device with the aid of fastening eyes 41.
  • FIGS. 5a, b and c show a front view, a partial vertical section or a partial horizontal section through a further embodiment of a picture tube according to the invention.
  • This picture tube contains an evacuated sheath 50, which consists of a neck (not shown), a cone 51 and a picture window 52, which is provided with a screen 53.
  • a second window 54 is arranged in front of the image window 52, a space 55 being located between these windows.
  • a tube 56 with a rectangular cross-section arranged around the end of the picture tube at the height of the picture window 52, around the second window 54 and around the space 55 serves as the cooling jacket.
  • the cooling liquid 57 flows through temperature differences that occur when the tube is operated, through the space 55 between the image window 52 and the second window 54 (arrows 58 in FIG. 6a) and leaves the space 55 via openings in the tube 56 that are not visible in the figure
  • the coolant then flows through the tube 56, where heat is given off, and passes through the opening 59 back into the space 55 (arrows 60 in FIG. 6a).
  • the tube can be attached in a display or projection arrangement with the aid of attachment eyes 61.
  • FIGs 7a, b and c are a front view, a partial vertical section or a partial horizontal section through a picture tube according to the invention.
  • This tube contains an evacuated sheath 70 which consists of a neck (not shown), a cone 71 and an image window 72 which is provided with a screen 73.
  • the second window consists of a lens 74 which is arranged in front of the image window 72.
  • a space 75 is located between this lens 74 and the image window 72.
  • the cooling jacket contains a metal outer wall 76 which is arranged around the tube end at the height of the image window 72, around the lens 74 and around the space 75 and can optionally be provided with cooling ribs.
  • the cooling liquid 77 flows upward through the space 75 due to temperature differences which occur when the tube is operated.
  • the coolant then flows through the channel 78 to the channel 79 in order to return to the room 75 after cooling.
  • the direction of flow is again indicated by arrows.
  • FIGS. 8a, b and c show a front view, a partial vertical section and a partial horizontal section through part of an image display device with a picture tube of the type shown in FIGS. 6a, b and c.
  • the difference between the picture tube shown in this figure and that according to FIGS. 6a, b and c is that the tube 156 does not have a rectangular but a trapezoidal cross section.
  • the reference numerals in the other tube parts correspond to those in FIGS. 6a, b and c.
  • This device contains a second cooling system with a metal ring 157 through which cooling lines 158 run.
  • This ring 157 is thermally insulated from the tube holder 160 with the aid of insulating material 159.
  • the tube is secured in the bracket 160 by means of bolts 161 and plates 162.
  • the picture tubes in a picture display device need not be arranged horizontally (picture window vertical).
  • the free convection fluid flow due to temperature differences also takes place with tubes standing almost vertically (image window almost horizontal).
  • a small angle of the picture tube axis with the vertical is sufficient to start the convection liquid flow. This is because the maximum height difference in the cooling liquid in an arrangement with a tube according to the invention is greater than in the tubes according to the prior art.
  • the cooling jackets (8, 36, 56, 76, 156) shown in FIGS. 1 to 8 expediently consist at least in part of aluminum or a material with a similarly high thermal conductivity. As a sealant between z.
  • silicone rubber is preferably used, since this has great plasticity over a wide temperature range.
  • the channel (9, 39, 56, 78) in the cooling jacket can of course also consist of several sub-channels.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Claims (11)

1. Tube image par projection muni d'une enveloppe vidée d'air (1, 30, 50, 70) comportant une fenêtre image (4, 20, 32, 52, 72) dont la face intérieure est munie d'un écran image (5, 42, 53, 73) et devant laquelle est disposée, du côté extérieur, une seconde fenêtre translucide (6, 21, 33, 54, 74), alors que dans l'enceinte (7, 34, 55, 75) comprise entre la fenêtre image et la seconde fenêtre circule un liquide de refroidissement à partir d'au moins un orifice d'admission (19, 59) vers au moins un orifice d'évacuation, ceci par suite d'une différence en température dans ce liquide de refroidissement, caractérisé en ce qu'à la hauteur de la fenêtre et autour de ladite enceinte est disposée une chemise de refroidissement (8, 36, 56, 76, 156) qui est munie d'au moins un canal qui amène le liquide de refroidissement de l'orifice d'écoulement vers l'orifice ou les orifices d'écoulement dudit espace.
2. Tube image selon la revendication 1, caractérisé en ce que la résistance à la circulation se produisant dans le canal respectivement dans les canaux de la chemise de refroidissement est inférieure à celle se produisant dans ladite enceinte.
3. Tube image selon la revendication 1 ou 2, caractérisé en ce qu'au moins la paroi extérieure (10, 76) de la chemise de refroidissement est en métal.
4. Tube image selon la revendication 3, caractérisé en ce que la paroi extérieure de la chemise de refroidissement est munie d'ailes de refroidissement (22).
5. Tube image selon l'une des revendications précédentes, caractérisé en ce qu'un canal traversé par le liquide de refroidissement est partiellement délimité par un joint d'étanchéité (12, 35), prévu entre la fenêtre image et la seconde fenêtre.
6. Tube image selon l'une des revendications 1 à 4, caractérisé en ce que la chemise de refroidissement contient un tube métallique entourant (56, 156) d'une section transversale carrée dans laquelle sont ménagés les orifices d'admission et d'évacuation.
7. Tube image selon la revendication 6, caractérisé en ce que le tube métallique (56), qui constitue la chemise de refroidissement, présente une section rectangulaire, le côté long du rectangle s'étendant essentiellement parallèlement à l'axe du tube image (18).
8. Tube image selon la revendication 6, caractérisé en ce que le tube métallique (156) a un côté intérieur avec une section transversale parallèle à l'axe du tube image et un côté extérieur qui converge vers l'axe du tube image.
9. Tube image selon l'une des revendications précédentes, caractérisé en ce que la deuxième fenêtre est le premier élément (74) d'un système de lentilles optique.
10. Dispositif de reproduction d'image comportant un tube image par projection selon l'une des revendications précédentes, caractérisé en ce que ce dispositif contient un deuxième système de refroidissement sur lequel est disposée la chemise de refroidissement du tube image.
11. Dispositif de reproduction d'images selon la revendication 10, caractérisé en ce que le deuxième système de refroidissement n'est que partiellement rempli d'un liquide de refroidissement qui s'évapore au-dessus d'une température de 40 à 50 °C.
EP84200784A 1984-06-01 1984-06-01 Tube cathodique de projection et dispositif de visualisation muni d'un tel tube Expired EP0162971B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE8484200784T DE3475140D1 (en) 1984-06-01 1984-06-01 Projection cathode ray tube and image display device provided with such a tube
EP84200784A EP0162971B1 (fr) 1984-06-01 1984-06-01 Tube cathodique de projection et dispositif de visualisation muni d'un tel tube
ES543606A ES8608733A1 (es) 1984-06-01 1985-05-29 Un tubo de imagen de proyeccion de television
CA000482869A CA1243069A (fr) 1984-06-01 1985-05-30 Tube cathodique de projecteur de television a refrigerant circulant par convection
DD85276815A DD232588A5 (de) 1984-06-01 1985-05-30 Projektionsfernsehbildroehre und bildwiedergabeanordnung mit einer derartigen bildroehre
JP60116830A JPS60264025A (ja) 1984-06-01 1985-05-31 投写テレビジヨン表示管
KR1019850003811A KR920010663B1 (ko) 1984-06-01 1985-05-31 프로젝션 텔레비젼 표시관 및 그를 이용한 영상 표시 장치
US07/298,378 US4899080A (en) 1984-06-01 1989-01-18 Projection television display tube with cooling means and display device having such a display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84200784A EP0162971B1 (fr) 1984-06-01 1984-06-01 Tube cathodique de projection et dispositif de visualisation muni d'un tel tube

Publications (2)

Publication Number Publication Date
EP0162971A1 EP0162971A1 (fr) 1985-12-04
EP0162971B1 true EP0162971B1 (fr) 1988-11-09

Family

ID=8192447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200784A Expired EP0162971B1 (fr) 1984-06-01 1984-06-01 Tube cathodique de projection et dispositif de visualisation muni d'un tel tube

Country Status (8)

Country Link
US (1) US4899080A (fr)
EP (1) EP0162971B1 (fr)
JP (1) JPS60264025A (fr)
KR (1) KR920010663B1 (fr)
CA (1) CA1243069A (fr)
DD (1) DD232588A5 (fr)
DE (1) DE3475140D1 (fr)
ES (1) ES8608733A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8600752A (nl) * 1986-03-25 1987-10-16 Philips Nv Inrichting voor het projecteren van een televisiebeeld op een scherm.
US5209690A (en) * 1988-09-08 1993-05-11 U.S. Philips Corporation Method of vapor depositing an interference filter layer on the inside of a display window, a display window, a projection cathode ray tube and a projection television apparatus
US5012112A (en) * 1989-02-21 1991-04-30 Martin Marietta Corporation Infrared scene projector
US5319282A (en) * 1991-12-30 1994-06-07 Winsor Mark D Planar fluorescent and electroluminescent lamp having one or more chambers
US5343116A (en) * 1992-12-14 1994-08-30 Winsor Mark D Planar fluorescent lamp having a serpentine chamber and sidewall electrodes
JP3427440B2 (ja) * 1993-09-29 2003-07-14 ソニー株式会社 プロジェクタ用陰極線管
US5479069A (en) * 1994-02-18 1995-12-26 Winsor Corporation Planar fluorescent lamp with metal body and serpentine channel
JP3234740B2 (ja) * 1994-06-09 2001-12-04 キヤノン株式会社 画像表示装置
JPH1140070A (ja) * 1997-07-16 1999-02-12 Sony Corp プロジェクタ用の液冷型陰極線管
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6218776B1 (en) 1998-12-30 2001-04-17 Honeywell International Inc. Enhanced brightness of flat fluorescent lamp
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp
US6737796B2 (en) * 2001-05-04 2004-05-18 Thomson Licensing S. A. Cathode-ray tube mounting apparatus
JP2004335203A (ja) * 2003-05-02 2004-11-25 Hitachi Displays Ltd 陰極線管装置及びそれを用いた画像表示装置
JP2011039152A (ja) * 2009-08-07 2011-02-24 Sanyo Electric Co Ltd 表示装置、及びカバー部材
KR101988014B1 (ko) 2012-04-18 2019-06-13 삼성디스플레이 주식회사 어레이 기판의 제조 방법 및 이에 사용되는 제조 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597731Y2 (ja) * 1979-06-07 1984-03-09 ソニー株式会社 陰極線管装置
JPS56119251U (fr) * 1980-02-12 1981-09-11
NL8201136A (nl) * 1982-03-19 1983-10-17 Philips Nv Beeldbuis.
EP0162972B1 (fr) * 1984-06-01 1988-10-05 Philips Patentverwaltung GmbH Tube cathodique de projection

Also Published As

Publication number Publication date
KR920010663B1 (ko) 1992-12-12
KR860000777A (ko) 1986-01-30
DE3475140D1 (en) 1988-12-15
JPH0584016B2 (fr) 1993-11-30
US4899080A (en) 1990-02-06
DD232588A5 (de) 1986-01-29
ES8608733A1 (es) 1986-06-16
EP0162971A1 (fr) 1985-12-04
CA1243069A (fr) 1988-10-11
ES543606A0 (es) 1986-06-16
JPS60264025A (ja) 1985-12-27

Similar Documents

Publication Publication Date Title
EP0162971B1 (fr) Tube cathodique de projection et dispositif de visualisation muni d'un tel tube
EP0162972B1 (fr) Tube cathodique de projection
DE2825582C2 (de) Kühlvorrichtung für Halbleiterelemente
DE1639377A1 (de) Elektronenroehre
DE60110061T2 (de) Thermoelektrischer entfeuchter
DE2204589A1 (de) Kuehlanordnung fuer flache halbleiterbauelemente
DE4108981C2 (de) Anordnung und Verfahren zur Wärmeabfuhr von mindestens einer Wärmequelle
EP0196699B1 (fr) Tube cathodique de projection
DE102007044634B4 (de) Hochtemperatur-Polymer-Elektrolyt-Membran-Brennstoffzelle (HT-PEMFC) einschließlich Vorrichtungen zu deren Kühlung
DE3017252A1 (de) Vorrichtung zur konstanthaltung der innentemperatur von koerpern
US4933593A (en) Liquid-cooled projection television display tube with expansion vessel
DE69031883T2 (de) Kühlvorrichtung mit elektrisch isoliertem Wärmerohr für Halbleiter
EP0268081A1 (fr) Dispositif de refroidissement pour composants semi-conducteurs
DE3321489A1 (de) Fluessigkeitsgekuehlte bildwiedergabeeinrichtung
AT392186B (de) Vorrichtung zur kuehlung von bauelementen der leistungselektronik
AT143411B (de) Hochspannungsentladungsgefäß.
DE765667C (de) Roentgenroehre
DE1614162C3 (de) Röntgenstrahier mit einer Festanodenröntgenröhre, die in einer mit Isolieröl gefüllten Haube angeordnet ist
DE747341C (de) Kuehleinrichtung fuer Metalldampfgleichrichter mit metallischer Gefaesswandung
DE8309697U1 (de) Gehäuse, insbesondere Schaltschrank für Verkehrssignalanlagen
AT159414B (de) Leuchtschirm für Braunsche Röhren, vorzugsweise für Projektionszwecke.
DE2112080C3 (de) Kühlanordnung für Bildaufnahmeröhren
DE60008541T2 (de) Vorrichtung zur kühlung und schützung einer kathode bei einem lichtbogenofen
DE707224C (de) Roentgenroehre
DE7140652U (de) Einsatz fur Gestelle der elektrischen Nachrichtentechnik, insbesondere Stromversorgungseinsatz

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19860529

17Q First examination report despatched

Effective date: 19870910

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REF Corresponds to:

Ref document number: 3475140

Country of ref document: DE

Date of ref document: 19881215

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
ITTA It: last paid annual fee
ITPR It: changes in ownership of a european patent

Owner name: CAMBIO RAGIONE SOCIALE;PHILIPS ELECTRONICS N.V.

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950822

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960603

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960626

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970601

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980227

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST