WO2006003903A1 - Projecteur à cristaux liquides, et refroidisseur de liquide pour son panneau à cristaux liquides - Google Patents

Projecteur à cristaux liquides, et refroidisseur de liquide pour son panneau à cristaux liquides Download PDF

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Publication number
WO2006003903A1
WO2006003903A1 PCT/JP2005/011856 JP2005011856W WO2006003903A1 WO 2006003903 A1 WO2006003903 A1 WO 2006003903A1 JP 2005011856 W JP2005011856 W JP 2005011856W WO 2006003903 A1 WO2006003903 A1 WO 2006003903A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
liquid
crystal panel
tank
liquid refrigerant
Prior art date
Application number
PCT/JP2005/011856
Other languages
English (en)
Japanese (ja)
Inventor
Takashi Naganawa
Rintaro Minamitani
Masakazu Hoshino
Shigeo Ohashi
Shuichi Terakado
Hiroaki Ikeda
Original Assignee
Hitachi, Ltd.
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 Hitachi, Ltd. filed Critical Hitachi, Ltd.
Publication of WO2006003903A1 publication Critical patent/WO2006003903A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3144—Cooling systems

Definitions

  • Liquid crystal projector and liquid cooling device for the liquid crystal panel Liquid crystal projector and liquid cooling device for the liquid crystal panel
  • the present invention relates to a liquid crystal projector that projects light onto a screen through a liquid crystal panel called a light valve or a projection lens, and further uses a liquid crystal panel used in such a liquid crystal projector as a liquid.
  • the present invention relates to a liquid cooling device for a liquid crystal panel for cooling with a refrigerant.
  • a projection apparatus for enlarging and displaying a color video screen or the like on a personal computer can also obtain a light source power such as a metal halide lamp.
  • the light is decomposed in three directions, the light intensity is modulated via the liquid crystal panels for the three primary colors R, G, and B, and these are synthesized by a color synthesis prism, etc., and then via a projection lens, etc.
  • Devices that project onto screens have become widespread and practical.
  • an air cooling fan is generally used in order to prevent an increase in temperature in each part (particularly, a lamp, a control unit, etc.) of the apparatus including the liquid crystal panel and to prevent adverse effects thereof.
  • cooling air is introduced and circulated from the outside of the device into the housing.
  • light emitting sources in recent years As the light intensity of the power increases, it has become difficult to sufficiently suppress the heat generation in the liquid crystal panel only by introducing and circulating the cooling air by the above-described air cooling fan.
  • a space is formed inside the polarizing plate and a glass panel facing the polarizing plate, and a liquid refrigerant such as water is sealed inside the space, and heat generated from the liquid crystal panel is used.
  • a method has been proposed in which the enclosed liquid refrigerant is circulated inside the space, thereby suppressing the temperature rise due to light reception of the liquid crystal panel and protecting the liquid crystal panel from adverse effects due to the temperature rise.
  • Patent Documents 1 to 4 a liquid refrigerant flow path is formed in the liquid crystal panel for the three primary colors G and B, and a heat exchange is provided outside thereof.
  • a cooling cycle that circulates a liquid refrigerant using a circulation pump and circulates a liquid refrigerant such as water in this cooling cycle, thereby achieving higher efficiency cooling in the liquid crystal panel.
  • a circulation path of liquid refrigerant is formed around the liquid crystal panel to cool the surrounding force, and further, a circulation path of a light emitting source is also formed. The entire projector is cooled by a cooling cycle.
  • Patent Document 1 Japanese Patent Laid-Open No. 1159684
  • Patent Document 2 JP-A-5-216016
  • Patent Document 3 Japanese Patent Application Laid-Open No. 5-264947
  • Patent Document 4 JP-A-11-282361
  • the present invention has been made in view of the above-described problems in the prior art, and in particular, the liquid crystal panel is efficiently cooled using a liquid cooling cycle in which a liquid refrigerant is circulated.
  • a liquid crystal projector having a configuration in which a flow path through which a liquid refrigerant flows can be formed in contact with the light-transmitting surface of the liquid crystal panel to efficiently cool the liquid crystal panel, and as described above.
  • An object of the present invention is to provide a liquid crystal projector that can be used, and a liquid-cooling device for the liquid crystal panel.
  • a light source an optical element that divides the light from the light source into three lights as parallel light, and the optical element divided by the optical element 3
  • Three kinds of liquid crystal panels that transmit light of a book and modulate the intensity thereof, light synthesis means for synthesizing three lights that have passed through the three kinds of liquid crystal panels and modulated their intensity, and the light synthesis means
  • a liquid crystal projector comprising a liquid cooling cycle including a pump and a radiator that circulates and cools liquid refrigerant in the three liquid crystal panels together with projection means for projecting the three synthesized lights.
  • the panel is provided with a liquid refrigerant flow path in contact with the liquid crystal panel region, and further includes a tank for storing therein the liquid refrigerant circulating in the liquid cooling cycle.
  • the discharge port Liquid crystal projector formed on substantially central portion in the height direction of the tank outer side wall is provided.
  • a cooling device for a liquid crystal panel for a liquid crystal projector for cooling the liquid crystal panel for a liquid crystal projector with a liquid refrigerant, wherein the liquid crystal A liquid refrigerant flow path is formed in the panel in contact with the liquid crystal panel region, and further, a radiator for radiating the heat received in the liquid crystal panel to the outside and the liquid refrigerant are driven to A pump that circulates in a liquid cooling cycle including a liquid crystal panel and the radiator; and a tank that stores therein a liquid refrigerant that circulates in the liquid cooling cycle.
  • the tank has a discharge port.
  • a liquid crystal panel cooling device formed at a substantially central portion in the height direction of the tank side wall is provided.
  • the tank for storing the liquid refrigerant circulating in the liquid cooling cycle is provided in the pump. It is attached adjacent to the surface on which the suction port and the discharge port are provided, and the interior is separated into left and right rooms by a separation wall, or for meandering the liquid refrigerant in the interior
  • a plurality of partition plates are provided, and the plurality of partition plates are arranged in a shape that forms substantially the same meandering channel even when the tank is placed upside down. It is preferable.
  • the liquid-cooled rhino The tank that stores the liquid refrigerant circulating in the interior of the vehicle may be provided with a mesh member that adheres to the surface the bubbles mixed in the liquid refrigerant flowing into the tank.
  • liquid crystal projector or the liquid crystal panel cooling device described above instead of the tank, a part of the upstream and downstream of the flow path is respectively provided. A curved portion that captures bubbles may be formed.
  • liquid crystal projector of the present invention and further to the liquid crystal panel cooling apparatus therefor, a liquid cooling cycle in which a liquid refrigerant is circulated is used.
  • the liquid coolant can be efficiently cooled by flowing the liquid refrigerant in contact with the translucent surface of the liquid crystal. It is possible to reliably capture and remove from the circulating flow of refrigerant, and to provide a liquid crystal projector that is excellent in cooling efficiency of the liquid crystal panel and can obtain a high-quality projected image. It has an extremely excellent effect.
  • FIG. 3 shows an example of the entire structure of a liquid crystal projector provided with a liquid cooling device for a liquid crystal panel according to an embodiment of the present invention.
  • reference numeral 100 indicates a housing of the liquid crystal projector, and as is apparent from the figure, a light source, for example, a metal nitride lamp 112 is provided therein.
  • the light from the light source 112 is parallel by the first lens array 113, the second lens array 114, the polarization conversion element 115, and the condenser lens 116 disposed at predetermined positions in the casing. The light is output in the presence of light.
  • the parallel light is then guided to the first dichroic mirror 117, a part of which is transmitted therethrough, and is guided to the liquid crystal panel 101 (R) for R (red) through the first condenser lens 118. Therefore, the light intensity is modulated, and then reaches the light combining prism 119.
  • the light reflected by the first first mirror 117 is reflected by the surface of the first reflector 120 and enters the second dichroic mirror 121.
  • the light reflected here is The light is guided to the G (green) liquid crystal panel 101 (G) through the second condenser lens 122, where the light intensity is modulated, and then reaches the light combining prism 119.
  • the light transmitted through the second chromic mirror 121 passes through the second reflecting mirror 123 and the relay lens 124 and is reflected by the surface of the third reflecting mirror 125, and passes through the third condenser lens 126 to B ( It is guided to the liquid crystal panel 101 (B) for blue), where the light intensity is modulated and reaches the light combining prism 119.
  • the light whose intensity is modulated by the liquid crystal panels 101 (R), 101 (G), and 101 (B) for the three primary colors R, G, and B is synthesized by the light combining prism 119, and Further, the image is enlarged by a projection optical system 127 including a projection lens, and projected onto a screen (not shown), for example (see thin arrows in the figure).
  • reference numeral 131 in the figure denotes a cooling fan unit including a fan and a motor that rotationally drives the fan, and as shown by a white arrow in the figure, the liquid crystal projector is External air is taken into the case through the air inlet 134 opened in a part of the case 100, and the electrical control of each part including the liquid crystal panel for R, G, B together with the heat dissipation unit 130 described later Then, the electric component unit 128 that drives is also cooled. Furthermore, as described above, as the display screen has been increased in size in recent years, the entrapped air has become highly illuminant. Therefore, the metal halide lamp 112, which is a high illuminance light source that has become a problem of heat generation.
  • the first lens array 113, the second lens array 114, the polarization conversion element 115, and the condenser lens 116 which are arranged in the vicinity of the light source 112, they are formed on a part of the casing 100.
  • the air is discharged to the outside through the opened air discharge port 135.
  • liquid crystal panels 101 (R), 101 (G), and 101 (B) for the three primary colors R, G, and B will be described in detail later.
  • a refrigerant passage is formed.
  • the electric pump 129 provided inside the casing 100 of the liquid crystal projector and having a tank in a part thereof, the liquid refrigerant is shown as indicated by the thick black arrow in the figure.
  • a so-called liquid cooling cycle is formed.
  • FIG. 1 attached, together with the electric pump 129 described above, a tank for temporarily storing the liquid refrigerant that is attached integrally therewith and circulates in the liquid cooling cycle. 200 is shown.
  • Fig. 1 (a) shows the state force when the electric pump 129 and the tank 200 are separated.
  • Fig. 1 (b) shows the state where the electric pump 129 and the tank 200 are assembled together. It is shown.
  • the electric pump 129 is provided with a suction port 136 and a discharge port 137 at a substantially symmetrical position at a substantially central portion in the height direction of one surface thereof. ing.
  • the tank 200 has a cubic shape having a surface substantially similar to one surface of the electric pump 129, and the inside thereof is partitioned into left and right rooms 202 and 203 by a separation plate 201.
  • Port insertion ports 204 and 205 are formed symmetrically on the wall surface of the tank in contact with one surface of the electric pump 129, and the suction port 206 is formed on the wall surface facing these port insertion ports.
  • the discharge port 207 are formed symmetrically in the left-right direction and at a substantially central position in the height direction of the tank.
  • the configuration in which the tank 200 is integrally attached to the electric pump 129 is particularly effective in using a relatively narrow space in the casing 100 of the liquid cooling projector to configure a liquid cooling cycle. It is possible to do.
  • FIG. 2 the tank 200 is mounted in a liquid cooling cycle formed by a liquid cooling device for a liquid crystal panel in a liquid crystal projector, that is, the inside of the cycle is circulated therein.
  • a state in which the liquid refrigerant is temporarily stored is shown.
  • 2A shows a state where the liquid crystal projector is installed on a desk, for example.
  • FIG. 2B shows a state where the liquid crystal projector is turned upside down, for example, on a ceiling.
  • the attached state is shown.
  • the surface of the liquid refrigerant indicated by the symbol S decreases with the period of use, for example, due to leakage from the piping, etc.
  • the liquid refrigerant force is assumed to be replenished.
  • the surface of the liquid refrigerant in the amount of liquid held in the tank 200 is shown.
  • the liquid refrigerant that has flowed into the left and right rooms 202 and 203 temporarily stays in the interior thereof.
  • the bubbles contained inside move upward due to the buoyancy and are collected on the coolant level (see B in the figure).
  • the liquid refrigerant discharged to the electric pump 129 via the port inlet 204 or to the heat radiating unit 130 (see FIG. 3 above) via the discharge port 207 Since the port 207 is positioned below the normal liquid level S, bubbles are removed from the liquid refrigerant discharged to the outside.
  • FIG. 4 attached herewith shows a structure of a tank 200 ′ according to a modification of the present invention in the liquid-crystal panel liquid cooling apparatus described above.
  • the tank 200 ′ is also used by being disposed in the middle of the liquid cooling cycle, but the 200 ′ has a partition plate 211 in its internal space so that its graphic power is also clear.
  • a plurality of liquid refrigerants are arranged in a direction perpendicular to the flow direction of the liquid refrigerant, so that the liquid refrigerant flows while meandering.
  • Each of the plurality of partition plates 211 is formed in a substantially “L” shape as shown in FIG. 4 (a), and the directions are alternately reversed. Are arranged.
  • the liquid refrigerant flowing into the inside through the inlet 206 is meandered by the plurality of partition plates 211.
  • the stagnation portion 212 formed at the corner the mixed bubbles move upward by the buoyancy and are collected on the refrigerant liquid level S (see B in the figure).
  • the above-described configuration in which the plurality of “L” -shaped partition plates 211 are alternately arranged in the reverse direction allows the tank 200 ′ to be used as described above even when the tank 200 ′ is used with its top and bottom reversed.
  • liquid refrigerant force bubbles flowing in the internal flow path are removed, so that liquid refrigerant in a good state with less air bubbles that adversely affect the projected image is supplied to the outside from the discharge port 204.
  • the above-described structure that causes the liquid coolant to meander to eliminate bubbles mixed inside can also be applied to the left and right rooms 202 and 203 in the tank 200 shown in FIG. .
  • FIG. 5 attached further shows a structure of a tank 200 "which is another modified example of the tank 200 '.
  • a plurality of tanks 200" are arranged inside the tank 200'.
  • a mesh 210 is disposed inside the partition plate 211.
  • the tank 200 "having a powerful structure the air bubbles mixed in the liquid refrigerant passing through the inside of the tank 200" are captured and removed by the mesh 220 of the partition plate.
  • the tank 200 also removes bubbles from the liquid refrigerant flowing in the internal flow path when the tank 200" is used with its top and bottom reversed.
  • the fineness of the mesh 220 occurs in the liquid refrigerant, and after remaining in the liquid refrigerant, the bubbles that are circulated together with the liquid refrigerant are considered. It is preferable to set the size corresponding to the size. More specifically, it may be preferable to employ a mesh that is rough enough to remove bubbles having a diameter of at least about 10 to 30 m.
  • FIGS. 6 and 7 show a liquid cooling device for a liquid crystal panel according to another embodiment of the present invention. That is, in the liquid cooling device according to another embodiment, instead of the above tank, the bubbles that adversely affect the projected image are changed to the G, B liquid crystal panels 101 (R), 101 (G), 101 (B) (see FIG. 3 above) is to be captured and removed inside each liquid crystal panel 101.
  • reference numeral 2 in FIG. 6 (a) showing a cross section of the liquid crystal panel 101 is a main component of the liquid crystal panel 101, and a number of transistor driving elements are formed on the surface thereof.
  • a TFT substrate made of glass is shown.
  • a counter substrate 1 made of glass is also arranged opposite to the TFT substrate, and liquid crystal 3 is enclosed between the transparent substrates 2 and 1.
  • the liquid crystal panel 101 which is one of the three primary colors R, G or B is formed.
  • reference numerals 4 and 5 in the figure are so-called protective glass plates, which are provided on the incident side and the emission side of the liquid crystal panel 101, respectively.
  • the liquid refrigerant channels 6 and 7 are formed.
  • a case 14 that surrounds the counter substrate 1, the TFT substrate 2, and the protective glass plates 4 and 5 to form a frame is attached.
  • the liquid refrigerant flowing in the flow paths 6 and 7 captures and stores bubbles mixed therein in the curved portion 141, so that the inside of the flow path
  • the liquid refrigerant flowing through the air also removes the bubbles, reducing the amount of bubbles that adversely affect the projected image. Note that it is obvious that even if this is arranged upside down, bubbles can be removed from the flowing liquid refrigerant by the curved portion 141 formed in a part of the flow path in the same manner as described above. It is.
  • the channels 6 and 7 are provided on both sides of the panel including the display area (translucent surface) of the liquid crystal panel, as shown in FIG. 6A. Since the liquid crystal panel is formed in contact with the liquid crystal panel, the liquid crystal panel can be cooled with high efficiency. Further, in this example, the liquid refrigerant is introduced or led out into the flow paths 6 and 7 in the liquid crystal panel 101. This is particularly advantageous when installing refrigerant piping in a narrow housing of a liquid crystal projector.
  • FIGS. 7 (a) and 7 (b) the force showing the structure of the modified example of the liquid crystal panel described above is shown.
  • the arrangement of the lead-out pipes 12 and 13 differs from the structure shown in FIG. That is, in the liquid crystal panel shown in FIG. 7, the introduction / outlet pipes 12 and 13 are arranged on the upper and lower end faces of the case 14.
  • the liquid that circulates bubbles that adversely affect the projected image within the liquid cooling cycle In order to remove from the refrigerant, the tanks 200, 200 ′, 200 ”whose detailed configuration has been described above are adopted, or instead of the tanks, the curved portions 141 are provided in the liquid crystal panels 101 as described above.
  • the present invention is not limited to only one of these, and may employ both of the above-described configurations. It is possible to exert a better bubble removing function from the liquid refrigerant.
  • liquid refrigerant flowing through each of the flow paths for example, water mixed with an antifreeze liquid such as ethylene glycol or propylene glycol in part, or light-transmitting, inert and foamed.
  • an antifreeze liquid such as ethylene glycol or propylene glycol in part, or light-transmitting, inert and foamed.
  • a fluorinated inert liquid perchlorocarbon
  • Fluorinert trademark of Sumitomo 3M Co., Ltd.
  • the surface of various substrates forming the channels 6 and 7 of the flat and high resistance liquid crystal panel region having the thickness “d” is processed to maintain hydrophilicity, for example, a thin film of titanium oxide. It is preferable to coat. According to this, since the wall surface is always kept hydrophilic by the photocatalytic action of titanium dioxide by the light having the above-mentioned lamp power, it is possible to suppress the adhesion of dirt and bubbles on the wall surface. It becomes possible.
  • FIG. 1 is a perspective view showing the separation and assembly state of an electric pump and a tank constituting a cooling device for a liquid crystal panel in a liquid crystal projector according to an embodiment of the present invention.
  • FIG. 2 is a view showing a cross section in a normal arrangement and a reverse arrangement in order to explain the state of the liquid refrigerant in the tank.
  • FIG. 3 is a block diagram showing an example of the entire structure of a liquid crystal projector provided with a liquid cooling device for a liquid crystal panel according to one embodiment of the present invention.
  • FIG. 4 is a perspective view showing a modified example of the tank shown in FIGS. 1 and 2, and its II and IV-II sectional views.
  • FIG. 5 is an internal perspective view showing a modified example of the tank shown in FIG.
  • FIG. 6 is a plan sectional view and a side sectional view showing a configuration of a liquid crystal panel in a liquid crystal panel cooling structure according to another embodiment of the present invention.
  • FIG. 7 is a plan sectional view and a side sectional view showing a configuration as a modification of the liquid crystal panel shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)

Abstract

Un projecteur à cristaux liquides refroidi efficacement par un cycle de refroidissement par liquide dans lequel la perturbation d’une image vidéo est supprimée par élimination des bulles du réfrigérant fluide, et un refroidisseur de liquide pour un panneau à cristaux liquides. La lumière d’une source lumineuse (112) est divisée en trois rayons parallèles qui traversent les panneaux à cristaux liquides 101(R), 101(V) et 101(B) de R, V et B et sont soumis à une modulation de l’intensité. Les rayons ainsi modulés sont soumis à la composition de couleur par un prisme de composition (119) et projetés à travers une lentille de projection (127) pour obtenir une image vidéo. Dans ce type de projecteur, chaque panneau à cristaux liquides possède des chaînes (6, 7) de réfrigérant fluide formées par contact avec la zone de son panneau et équipée en plus d’un réservoir (200). Ce réservoir dispose de sorties (205, 207) formées en grande partie au centre du côté extérieur du réservoir vers le haut de sorte que les bulles sont capturées à l’intérieur même si le dispositif est à l’envers pour l’alimentation en réfrigérant fluide. Autrement, chaque panneau (101) est équipé d’une partie incurvée (141) pour capturer les bulles qui se forment dans sa chaîne de réfrigérant fluide.
PCT/JP2005/011856 2004-06-30 2005-06-28 Projecteur à cristaux liquides, et refroidisseur de liquide pour son panneau à cristaux liquides WO2006003903A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004192749A JP2006017786A (ja) 2004-06-30 2004-06-30 液晶プロジェクタとその液晶パネルの液冷装置
JP2004-192749 2004-06-30

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WO2006003903A1 true WO2006003903A1 (fr) 2006-01-12

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JP (1) JP2006017786A (fr)
TW (1) TW200604713A (fr)
WO (1) WO2006003903A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN101846872A (zh) * 2009-03-25 2010-09-29 精工爱普生株式会社 投影机
CN115145067A (zh) * 2021-03-29 2022-10-04 精工爱普生株式会社 光调制装置和投影仪

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Publication number Priority date Publication date Assignee Title
JP4161976B2 (ja) 2004-11-04 2008-10-08 セイコーエプソン株式会社 光学装置およびプロジェクタ

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JP2004012934A (ja) * 2002-06-07 2004-01-15 Seiko Epson Corp 表示パネル積層体、ケース、表示パネルモジュール及び投射型表示装置並びに表示パネルモジュールの冷却方法
JP2004084958A (ja) * 2002-06-28 2004-03-18 Hitachi Ltd 電子機器、液冷システムおよび液冷タンク
JP2004095891A (ja) * 2002-08-30 2004-03-25 Toshiba Corp 電子機器

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JPS6159316A (ja) * 1984-08-30 1986-03-26 Seiko Instr & Electronics Ltd 液晶パネルの温度制御方法
JPS61131553A (ja) * 1984-11-30 1986-06-19 Fujitsu Ltd 浸漬液冷装置
JPH03288187A (ja) * 1990-04-04 1991-12-18 Mitsubishi Electric Corp 投写型表示装置
JPH04326683A (ja) * 1991-04-26 1992-11-16 Matsushita Electric Ind Co Ltd 投写形受像機
JPH05216016A (ja) * 1992-02-03 1993-08-27 Sharp Corp 液晶表示装置の冷却装置
JPH05188361A (ja) * 1992-06-22 1993-07-30 Casio Comput Co Ltd 液晶表示装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846872A (zh) * 2009-03-25 2010-09-29 精工爱普生株式会社 投影机
CN101846872B (zh) * 2009-03-25 2012-09-05 精工爱普生株式会社 投影机
CN115145067A (zh) * 2021-03-29 2022-10-04 精工爱普生株式会社 光调制装置和投影仪
CN115145067B (zh) * 2021-03-29 2023-08-04 精工爱普生株式会社 光调制装置和投影仪

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