WO2004053590A1 - 投写型映像表示装置 - Google Patents
投写型映像表示装置 Download PDFInfo
- Publication number
- WO2004053590A1 WO2004053590A1 PCT/JP2003/015911 JP0315911W WO2004053590A1 WO 2004053590 A1 WO2004053590 A1 WO 2004053590A1 JP 0315911 W JP0315911 W JP 0315911W WO 2004053590 A1 WO2004053590 A1 WO 2004053590A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- ion wind
- wind generator
- temperature
- projection
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
-
- 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
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
Definitions
- the present invention relates to a projection type image display device such as a liquid crystal projector.
- the projection display apparatus modulates light emitted from a light source with a light valve such as a liquid crystal panel and projects the light. For this reason, it is necessary to provide a high-intensity light source, and it is necessary to take measures against the heat generated from the high-intensity light source itself and the heat generated when light is absorbed by the polarizing plate of the liquid crystal panel or various optical components. Become. Conventionally, a fan is rotated by a motor to intake and exhaust air, thereby releasing heat to the outside of the apparatus (see Japanese Patent Application Laid-Open No. 2000-222605).
- the present invention has been made in view of the above circumstances, and has as its object to provide a projection-type image display device having a mechanism capable of performing intake and exhaust without using a fan, or having a mechanism that can be used as a dust removal device in combination with a fan. .
- a projection-type image display device of the present invention provides a projection-type image display device that modulates a light emitted from a light source with a light valve and projects the light.
- An ion wind generator for causing air generated by moving ions generated by ionizing air or molecules in the air by one electrode by the other electrode, and causing air movement by the other electrode;
- An ozone removal filter is provided on the path of the moving air.
- the ion wind generator electrically moves ionized air and the like to generate air movement.Therefore, unlike air blowing by the rotation of a fan, there is no generation of rotational noise, and there is almost no sound in intake and exhaust. It becomes possible to be in a state. And even if ozone is generated by the ionization, the ozone is removed by the ozone removal filter.
- An ozone removal filter may be provided on the path of the moving air that has been heated by removing heat generated in the apparatus. Further, an ozone removal filter may be provided on the moving air path and near the light source. Further, the reflector constituting the light source may transmit infrared light, and the infrared light may be guided to an ozone removal filter.
- the ion wind generator may be provided to suck air outside the machine into the machine.
- the ion wind generator becomes a dust removing device.
- dust can be removed without lowering the blowing ability of the fan. Ozone is removed by the ozone removal filter.
- control means Should be provided. According to this, the air is blown from the stage when the ozone removing ability of the ozone removing filter is sufficiently exhibited, and the discharge of generated ozone to the outside of the device can be suppressed as much as possible. Further, it is preferable that the ion wind generator is turned on and off when a predetermined period elapses after the light source is turned on and off. Even in such a configuration, the air is blown after the ozone removal filter has a sufficient ozone removal capability, and the discharge of generated ozone to the outside of the device can be minimized. .
- FIG. 1 is a diagram showing a projection display apparatus according to an embodiment of the present invention
- FIG. 2 is an explanatory diagram showing a configuration of an ion wind generator.
- FIG. 3 is an ON / OFF control of the ion wind generator.
- Fig. 4 is a perspective view (partially transparent) showing the dust collecting and blowing device, and
- Fig. 5 is an explanatory diagram showing an example of the arrangement of the dust collecting and blowing device.
- Figure 1 shows the optical system of a three-panel color LCD projector.
- the light emitting section 2 of the light source 1 is composed of an ultra-high pressure mercury lamp, a metal halide lamp, a xenon lamp, or the like, and the irradiation light is emitted as parallel light by the parabolic reflector 3, for example.
- the first dichroic mirror 5 transmits light in the red wavelength band and reflects light in the cyan (green + blue) wavelength band.
- the light in the red wavelength band transmitted through the first dichroic mirror 5 is reflected by the total reflection mirror 16 and its optical path is changed.
- the red light reflected by the total reflection mirror 6 is a condenser lens 7
- the light is modulated by passing through a transmissive liquid crystal light valve 31 for red light through the light.
- the light in the wavelength band of the shin reflected by the first dichroic mirror 5 is guided to the second dichroic mirror 8.
- the second dichroic mirror 8 transmits light in the blue wavelength band and reflects light in the green wavelength band.
- the light in the green wavelength band reflected by the second dichroic mirror 8 is guided to a transmissive liquid crystal light valve 32 for green light via a condenser lens 9 and transmitted therethrough, where the light is modulated.
- the light in the blue wavelength band transmitted through the second dichroic mirror 8 passes through the all-reflection mirrors 11 and 13, the relay lenses 10 and 12, and the condenser lens 14, and passes through the transmission type for blue light.
- the liquid crystal light valve 33 is guided by the liquid crystal light valve 33 and transmitted therethrough to be modulated.
- the liquid crystal light valves 31, 32, and 33 are composed of a light-incident-side polarizing plate, a panel formed by enclosing liquid crystal between a pair of glass substrates (on which pixel electrodes and an alignment film are formed), and a light-emitting panel. And a side polarizing plate.
- the modulated light (image light of each color) modulated by passing through the liquid crystal light valves 31, 32, and 33 is combined by the dichroic prism 15 to become color image light. This color image light is enlarged and projected by the projection lens 16 and projected and displayed on a screen (not shown).
- An ion wind generator 20 is provided at a position behind the light source 1 (this ion wind generator 20 has a large number of negative electrodes 21 on the minus side as shown in FIG. 2).
- this ion wind generator 20 has a large number of negative electrodes 21 on the minus side as shown in FIG. 2).
- air and molecules are negatively ionized by corona discharge, and the negatively ionized air and molecules are attracted by the mesh electrode 22 on the ground side to generate air movement.
- Receives a voltage supply from a power supply unit (not shown), generates a high voltage of about minus several kV to about minus ten and several kV, and applies this to the electrodes 21. Also, as shown in FIG.
- the air vent of the ion wind generator 20 is directed to the exhaust port on the back of the housing, and the moving air generated by the ion wind generator 20 is out of the device.
- the air is exhausted, the ambient air heated by the heat of the light source 1 is sucked in, and is exhausted out of the device on the moving air.
- c ozone decomposition catalyst filter 2 3 is provided with the ozone decomposition catalyst filter 2 3 to the exhaust port of the housing back those formed by impregnating the vent support of the catalyst, for example a honeycomb structure, such as manganese dioxide or nickel oxide It is.
- Ozone (O 3) is generated by corona discharge in the ion wind generator 20, and this ozone is guided outside the device by moving air, but the ozone decomposition catalyst filter provided at the exhaust port Ozone is decomposed by passing through 23.
- the ozonolysis catalyst filter 23 In order for the ozonolysis catalyst filter 23 to fully exhibit its ozonolysis ability, a certain temperature is required. In the above configuration, the ambient air heated to a high temperature by the heat of the light source 1 is exhausted to the outside of the device on the moving air, and the heat of the high-temperature air is given to the ozone decomposition catalyst filter 23. The temperature of the decomposition catalyst filter 23 rises, and its ozone decomposition ability is increased.
- the temperature of the ozone decomposition catalyst filter 23 is also increased by the infrared light emitted from the light source 1, and the ozone decomposition ability is increased (light source An infrared reflection mirror or the like may be provided so as to positively guide the infrared rays emitted from 1 to the ozone decomposition catalyst filter 23).
- the temperature of the ozone decomposition catalyst filter 23 is the same as room temperature, and the ozone decomposition ability cannot be sufficiently exhibited. Therefore, the following control is performed, and a temperature sensor 24 and a control unit 25 are provided for this purpose.
- the temperature sensor 24 is at or around the temperature of the ozone decomposition catalyst filter 23. Detect temperature. This detection result (voltage value) is given to the control unit 25.
- the control unit 25 gives an ON command to the high-voltage generation circuit 26 so as to operate the ion wind generator 20 when the detected temperature is equal to or higher than the specified temperature.
- An OFF command is given to the high voltage generation circuit 26 so as to stop the wind generator 20.
- the specified temperature differs depending on the catalyst used, and also depends on the heat-resistant temperature of the optical element in the projector. For example, the specified temperature can be 70 ° G to 90 ° G.
- Fig. 3 shows the passage of time and changes in the temperature inside the device.
- the ONZOFF of the light source 1 and the ON / OFF timing of the ion wind generator 20 c The temperature inside the device when the light source 1 was initially turned on was the same as room temperature. However, after that, the temperature inside the device rises due to the heat generated by the light source 1, and the temperature of the ozone decomposition catalyst filter 23 rises with it. When the detected temperature exceeds the specified temperature, the ion wind generator 20 is turned on, and the temperature inside the device is maintained at a steady temperature by cooling the ion wind.
- the temperature inside the device was still high at first, and the temperature of the ozone decomposition catalyst filter 23 was also high, so that the ON state of the ion wind generator 20 was maintained for a while, and then detected.
- the temperature falls below the specified temperature, the ion wind generator 20 is turned off.
- the air can be blown when the ozone removal capacity of the ozone decomposition catalyst filter 23 is sufficiently exhibited. Emission of the generated ozone out of the device can be minimized.
- the high-temperature air around the light source 1 is sucked by the ion wind generated by the ion wind generator 20 and guided outside the device, but the ion wind generated by the ion wind generator 20 is used as the light source.
- the ozone decomposition catalyst filter 23 may be placed in the vicinity of the reflector 3 of the light source 1 in this case. It is good to arrange.
- the configuration in which the ion wind generator 20 is disposed near the light source 1 has been described. However, the configuration is not limited to this, and the ion wind generator 20 may be provided at another high-temperature generating location (for example, a position near a liquid crystal display panel). Good thing.
- the positive and negative relations of the electrodes in the ion wind generator may be reversed, and if the air movement occurs due to the ionization of air or molecules in the air, the above-described specific example is used. It is possible to use an ion wind generator different from the configuration shown in FIG.
- the temperature of the ozonolysis catalyst filter 23 or the surrounding temperature is measured by the temperature sensor 24 to operate the ion wind generator 20.
- the light source 1 Is turned on, a timer measurement is performed, and when a predetermined period has elapsed, the ion wind generator 20 is turned on, and after the light source 1 has been turned off, a timer measurement is performed, and the predetermined period has elapsed.
- the ion wind generator 20 may be turned off. Even in such a case, the air can be blown after the ozone decomposition catalyst filter 23 reaches the stage where the ozone removal ability is sufficiently exhibited, and the discharge of generated ozone to the outside of the device can be suppressed as much as possible. " To 0
- a fan 200 with an ion wind generator (hereinafter, referred to as a dust collector blower 200) provided in the projection display apparatus of the embodiment of the present invention will be described with reference to FIGS. 4 and 5. I do.
- FIG. 4 is a perspective view (partially transparent) showing the dust collecting and blowing device 200.
- Dust collector Blower 200 comprises a dust collector (ion wind generator) and a blower (sirocco fan).
- the dust collecting and blowing device 200 includes a needle-shaped electrode 22 1, a first and a second mesh electrode 22 2 ⁇ 2 2 2 ⁇ , and an ozone decomposition catalyst filter 2 2 in a rectangular cylindrical body. 3 are arranged in this order in the airflow direction. Air and dust are negatively ionized by corona discharge at the needle-shaped electrodes 2 2, and the negatively ionized air and dust are converted to the ground by the first and second mesh electrodes 22 2 A '22 22 B.
- the mesh electrode 222B attracts dust while attracting the moving air.
- the ozone decomposition catalyst filter 223 is formed by adhering a catalyst such as manganese dioxide, nickel oxide, or activated carbon to the inner wall of a vent hole having a honeycomb structure, for example.
- the high voltage generation circuit 26 receives a voltage from a power supply unit (not shown), generates a high voltage of about minus several kV to about minus ten and several kV, and applies this to the electrodes 22 1.
- the sirocco fan 224 is configured to suck the moving air, which has been cleaned in the dust collecting section, by the sirocco fan 224 via a hood section (el-portion section) 225 and to blow the air. I have.
- the sirocco fan 222 sucks air in the direction of the fan rotation axis and blows out the air in a direction perpendicular to the direction of the fan rotation axis.
- the diameter (in the case of a circle) or the length of one side (in the case of a square) of the mesh opening of the first mesh electrode 222 2 A is set to, for example, about several mm.
- the diameter (in the case of a circle) or the length of one side (in the case of a square) of the mesh opening of the second mesh electrode 2 22 B is, for example, about 1 pixel of the pixel size (10 to 20 um) of the liquid crystal display panel. It is set to about 0 times.
- the dust collection function is mainly performed by the second mesh electrode 222B.
- the first mesh electrode 222A is fixedly arranged in the rectangular cylinder.
- the second mesh electrode 222B and the ozone decomposition catalyst filter 222 are provided so as to be removable from the prismatic body.
- the second mesh electrode 2 2 2B and the ozone decomposition catalyst filter 2 23 can be replaced, or they can be cleaned and restored.
- the needle electrodes 2 2 1... Are energized by mistake with the second mesh electrode 22 2 B removed, the first mesh electrode 22 2 A is present in the prismatic body. Therefore, it is possible to prevent the occurrence of a trouble due to the absence of the other electrode for the discharge.
- the dust collecting and blowing device 200 having the configuration shown in FIG. 4 is arranged below the image light generating optical system, for example, as shown in FIG.
- a duct 227 is provided at the air outlet of the sirocco fan 224.
- the tip of duct 227 is branched into three, and each tip opening is located below liquid crystal light valves 31, 32, and 33 to blow air upward.
- the replacement of the second mesh electrode 222B and the ozone decomposition catalyst filter 222 in the dust collecting section can be performed by pulling them out from the bottom side of the liquid crystal projector.
- the opening width can be made sufficiently large with respect to the pixel size of the liquid crystal display panel, and the load is reduced.
- an airflow in the air suction direction of the sirocco fan 224 is generated by the dust collecting portion (ion wind generator). By these two effects, it is possible to prevent dust from entering while eliminating the resistance to the airflow to the sirocco fan 224.
- Ozone (O 3) is generated by corona discharge in the dust collecting section, and the ozone is carried on the moving air and guided to the liquid crystal light valves 31, 32, and 33. Ozone is decomposed by passing through the filter 222.
- the ONZOFF control of the ion wind generator (dust collector) or the ON / OFF control of the entire dust collector / blower 200 as in the first embodiment. Since the ozone decomposition catalyst filter 2 23 receives outside air, the temperature rise is lower than in the case of Example 1, but the light source The temperature inside the device rises due to the heat generated, and the temperature of the ozone decomposition catalyst filter 223 also rises. Therefore, it is necessary to wait for the temperature of the ozone decomposition catalyst filter 223 to rise due to the lapse of time since the temperature detection or the light source is turned on. After this temperature rise, the ion wind generator (dust collector) is turned on or the dust is collected. The entire blower 200 may be turned on.
- the ozone decomposition catalyst filter 223 may be provided in the exhaust part after the cooling air has taken the heat of the liquid crystal light valves 31, 32, 33. Further, in these embodiments, the image generation optical system using three transmissive liquid crystal display panels has been described. However, the present invention is not limited to such an image generation optical system, and other image generation optical systems may be used. The case can also be applied.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200380104684XA CN1720481B (zh) | 2002-12-12 | 2003-12-11 | 投影式视频显示器 |
EP03778848A EP1571489B1 (en) | 2002-12-12 | 2003-12-11 | Projection type image display unit |
US10/538,512 US7407293B2 (en) | 2002-12-12 | 2003-12-11 | Projection type image display unit |
DE60335962T DE60335962D1 (de) | 2002-12-12 | 2003-12-11 | Bildanzeigeeinheit des projektionstyp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002361140A JP3717885B2 (ja) | 2002-12-12 | 2002-12-12 | 投写型映像表示装置 |
JP2002-361140 | 2002-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004053590A1 true WO2004053590A1 (ja) | 2004-06-24 |
Family
ID=32501030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015911 WO2004053590A1 (ja) | 2002-12-12 | 2003-12-11 | 投写型映像表示装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7407293B2 (ja) |
EP (1) | EP1571489B1 (ja) |
JP (1) | JP3717885B2 (ja) |
CN (1) | CN1720481B (ja) |
DE (1) | DE60335962D1 (ja) |
WO (1) | WO2004053590A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3584031B2 (ja) * | 2002-03-28 | 2004-11-04 | 三洋電機株式会社 | 投写型映像表示装置 |
JP4148865B2 (ja) * | 2003-09-26 | 2008-09-10 | 三洋電機株式会社 | 投写型映像表示装置 |
JP2005275200A (ja) | 2004-03-26 | 2005-10-06 | Sanyo Electric Co Ltd | 投写型映像表示装置 |
US20100033688A1 (en) * | 2005-01-21 | 2010-02-11 | Ryozo Obama | Light-source unit, light-source apparatus, and projection-type display apparatus |
US7830643B2 (en) * | 2006-01-23 | 2010-11-09 | Igo, Inc. | Power supply with electrostatic cooling fan |
WO2007112763A1 (en) * | 2006-04-03 | 2007-10-11 | Aureola Swedish Engineering Ab | Method and apparatus for cooling and ventilation |
EP1901352A1 (en) * | 2006-09-12 | 2008-03-19 | Neng Tyi Precision Industries Co., Ltd. | Heat sink device generating an ionic wind |
JP5216280B2 (ja) * | 2007-08-23 | 2013-06-19 | 三洋電機株式会社 | フィルタ目詰まり検知機構及びそれを用いた投写型映像表示装置 |
DE102008010944B4 (de) * | 2008-02-25 | 2010-05-20 | Fujitsu Siemens Computers Gmbh | Kühlanordnung mit einem Ionen-Kühlsystem für ein elektronisches Gerät, elektronisches Gerät und Verfahren zur Überwachung einer elektrostatischen Aufladung |
JP2009251133A (ja) * | 2008-04-03 | 2009-10-29 | Hitachi Ltd | 投写型映像表示装置 |
JP5136266B2 (ja) * | 2008-07-30 | 2013-02-06 | セイコーエプソン株式会社 | 空間光変調装置、プロジェクタ、及び空間光変調装置の冷却方法 |
US20100116460A1 (en) * | 2008-11-10 | 2010-05-13 | Tessera, Inc. | Spatially distributed ventilation boundary using electrohydrodynamic fluid accelerators |
US20110037367A1 (en) * | 2009-08-11 | 2011-02-17 | Ventiva, Inc. | Solid-state light bulb having ion wind fan and internal heat sinks |
JP5469957B2 (ja) * | 2009-08-20 | 2014-04-16 | セイコーエプソン株式会社 | 評価方法、表示シートの製造方法および表示シートの製造装置 |
US20110198978A1 (en) * | 2010-10-12 | 2011-08-18 | Ventiva, Inc. | Touch-safe solid-state light bulb having ion wind fan |
CN103197495B (zh) * | 2012-01-04 | 2015-06-10 | 中强光电股份有限公司 | 气体过滤模块及投影装置 |
CN103698966B (zh) * | 2012-09-27 | 2016-08-17 | 中强光电股份有限公司 | 照明系统及投影装置 |
JP2014209183A (ja) * | 2013-03-27 | 2014-11-06 | セイコーエプソン株式会社 | エアフィルター及びプロジェクター |
EP3580318B1 (en) * | 2017-02-13 | 2023-05-10 | Unilever IP Holdings B.V. | Method of delivering a laundry composition |
CN110352232A (zh) | 2017-02-13 | 2019-10-18 | 荷兰联合利华有限公司 | 洗衣组合物添加剂 |
US11180721B2 (en) | 2017-02-13 | 2021-11-23 | Conopco, Inc. | Ancillary laundry composition |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0817356A (ja) * | 1994-07-04 | 1996-01-19 | Toshimi Onodera | 送風機 |
JP2001259470A (ja) * | 2000-03-16 | 2001-09-25 | Denso Corp | 空気清浄器 |
JP2002189251A (ja) * | 2000-12-20 | 2002-07-05 | Sony Corp | 投射型表示装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3899684A (en) * | 1974-06-03 | 1975-08-12 | Ozone Inc | Control system for corona discharge ozone generating unit |
AU595179B2 (en) * | 1985-06-06 | 1990-03-29 | Astra-Vent A.B. | Ion-wind air transporting arrangement |
SE458077B (sv) * | 1987-07-03 | 1989-02-20 | Astra Vent Ab | Anordning foer transport och ev samtidig rening av luft |
SE462739B (sv) * | 1988-12-08 | 1990-08-27 | Astra Vent Ab | Anordning vid en koronaurladdningsanordning foer avlaegsnande av vid urladdningen alstrade skadliga aemnen |
IL103867A0 (en) | 1992-11-25 | 1993-04-04 | Spectronix Ltd | Cooling method and apparatus |
US6056405A (en) * | 1998-10-15 | 2000-05-02 | In Focus Systems, Inc. | Lamp module with kinematic mount |
JP2001068293A (ja) * | 1999-06-25 | 2001-03-16 | Toto Ltd | 埃付着防止器および埃付着防止器を備えた映像装置 |
JP2001222065A (ja) | 2000-02-07 | 2001-08-17 | Sanyo Electric Co Ltd | 冷却ファンを備えた電子機器 |
JP3477424B2 (ja) | 2000-04-11 | 2003-12-10 | シャープ株式会社 | 遮光リフレクター及び遮光リフレクターを有する画像投影装置 |
JP2002286904A (ja) * | 2001-03-27 | 2002-10-03 | Seiko Epson Corp | 光学部品およびこれを用いたプロジェクタ |
JP2003195420A (ja) | 2001-12-27 | 2003-07-09 | Tamron Co Ltd | プロジェクター用冷却装置 |
JP3584031B2 (ja) * | 2002-03-28 | 2004-11-04 | 三洋電機株式会社 | 投写型映像表示装置 |
JP4148865B2 (ja) * | 2003-09-26 | 2008-09-10 | 三洋電機株式会社 | 投写型映像表示装置 |
JP2005275200A (ja) * | 2004-03-26 | 2005-10-06 | Sanyo Electric Co Ltd | 投写型映像表示装置 |
-
2002
- 2002-12-12 JP JP2002361140A patent/JP3717885B2/ja not_active Expired - Fee Related
-
2003
- 2003-12-11 DE DE60335962T patent/DE60335962D1/de not_active Expired - Lifetime
- 2003-12-11 CN CN200380104684XA patent/CN1720481B/zh not_active Expired - Fee Related
- 2003-12-11 EP EP03778848A patent/EP1571489B1/en not_active Expired - Fee Related
- 2003-12-11 WO PCT/JP2003/015911 patent/WO2004053590A1/ja active Application Filing
- 2003-12-11 US US10/538,512 patent/US7407293B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0817356A (ja) * | 1994-07-04 | 1996-01-19 | Toshimi Onodera | 送風機 |
JP2001259470A (ja) * | 2000-03-16 | 2001-09-25 | Denso Corp | 空気清浄器 |
JP2002189251A (ja) * | 2000-12-20 | 2002-07-05 | Sony Corp | 投射型表示装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1571489A1 (en) | 2005-09-07 |
EP1571489B1 (en) | 2011-02-02 |
CN1720481B (zh) | 2012-01-25 |
EP1571489A4 (en) | 2008-03-19 |
DE60335962D1 (de) | 2011-03-17 |
JP2004191767A (ja) | 2004-07-08 |
CN1720481A (zh) | 2006-01-11 |
US20060017889A1 (en) | 2006-01-26 |
US7407293B2 (en) | 2008-08-05 |
JP3717885B2 (ja) | 2005-11-16 |
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