WO2006039855A1 - Radiateur chauffant de type canal utilise dans un composant d’affichage dans un systeme de projection - Google Patents

Radiateur chauffant de type canal utilise dans un composant d’affichage dans un systeme de projection Download PDF

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Publication number
WO2006039855A1
WO2006039855A1 PCT/CN2005/001389 CN2005001389W WO2006039855A1 WO 2006039855 A1 WO2006039855 A1 WO 2006039855A1 CN 2005001389 W CN2005001389 W CN 2005001389W WO 2006039855 A1 WO2006039855 A1 WO 2006039855A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
heat dissipating
adjacent
passage
developing
Prior art date
Application number
PCT/CN2005/001389
Other languages
English (en)
Chinese (zh)
Inventor
Xiaoling Luo
Original Assignee
Xiaoling Luo
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 Xiaoling Luo filed Critical Xiaoling Luo
Publication of WO2006039855A1 publication Critical patent/WO2006039855A1/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]
    • H04N9/3141—Constructional details thereof
    • 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

Definitions

  • the present invention relates to a channel type heat sink for a developing element in a projection system, and more particularly to a channel type heat sink for a developing element in a transmissive projection system.
  • Projection systems are generally classified into a transmissive projection system and a reflective projection system in accordance with the development of the developing elements.
  • DMD Digital Micormirror Device
  • LCOS Liquid Crystal on Silicon, a new type of reflective micro LCD projection technology, also known as CMOS-LCD
  • CMOS-LCD complementary metal-oxide-semiconductor-semiconductor
  • a projection system When the light is projected onto a developing element such as a liquid crystal (LCD), the light that penetrates the developing element carries the image information and is magnified to the screen by an optical component such as a lens.
  • a projection system is called a transmissive projection system.
  • a transmissive projection system when light passes through the imaging element, some of the light is absorbed by the imaging element into thermal energy, causing the temperature of the imaging element to rise substantially. Higher temperatures not only reduce the image quality, but also shorten the life of the imaging element, and severely melt it and completely damage it. Therefore, solving the heat dissipation problem of the imaging element and properly controlling its temperature are the key to ensuring the long-term safe and stable operation of the projection system.
  • the higher the brightness of the projection system the more light passes through the imaging element, the more thermal energy is converted, the higher the temperature, the more prominent the problem of heat dissipation.
  • the image forming element is mainly cooled by the air cooling method.
  • the so-called air cooling method is to use the fan to rotate to cause the air around the heat dissipating object to flow, thereby taking the heat away to achieve the purpose of cooling, generally in the form of exhaust and air.
  • Hair is to use
  • the wind from the rotation of the fan is blown toward the developing element to lower the temperature of the developing element.
  • the venting is to install the fan near the developing element and blow it in the opposite direction.
  • the purpose is to take away the hot air around the developing element and at the same time form a low air pressure, so that the surrounding wind flows to the developing element.
  • the wind blown by the fan is not directional, but is blown away in all directions.
  • the effective air volume of the developing component (generally the flat type) is less, the efficiency is low, and the waste is large.
  • the wind attracted by the fan is also from all directions, has no orientation, and cannot be completely aimed at the developing element, so the efficiency is also low.
  • the non-directionality of the wind generated by the fan results in a very low wind utilization rate for the imaging element, typically less than 50%. If there are other components in the vicinity of the imaging element, the air cooling effect will be worse.
  • the main method is to increase the fan's air volume and wind pressure, which will inevitably increase the cost, power consumption and noise of the fan, and increase the volume of the fan to obtain greater air volume and wind pressure when necessary.
  • the volume of the fan cannot be increased indefinitely, and it is subject to the volume of the projection system itself. Therefore, if a method can be found that greatly increases the wind utilization rate, the cost and power consumption of the fan can be relatively reduced while maintaining a smaller volume.
  • the defect of low wind utilization caused by tropism provides a channel type heat dissipating device for a developing element in a transmissive projection system, and the structure of the device is reasonable, and a wind is established through a specified path.
  • the fan's wind is directional, so it has good heat dissipation performance, which greatly improves the fan's wind utilization, reduces the cost and power consumption of the fan, while maintaining a smaller fan volume.
  • the channel type heat dissipating device for developing elements in the projection system of the present invention comprises a developing element, an adjacent element of the developing element, a fan, and two cover plates are disposed on the upper and lower sides of the developing element and the adjacent element, and the developing element A heat dissipation channel is formed between the adjacent component and the upper and lower cover plates, and the air outlet of the fan is disposed at the heat dissipation passage opening toward the image developing component.
  • a connecting channel is further disposed between the fan and the heat dissipating channel of the present invention, and one end opening of the connecting channel is closely matched with the fan, and the other end is closely connected with the heat dissipating channel.
  • the invention can also establish a heat dissipation channel by using two adjacent elements on both sides of the developing element, two cover plates are arranged on the upper and lower sides of two adjacent elements, the developing element is placed therein, two adjacent elements are up and down A heat dissipation channel is formed between the two cover plates, and the air outlet of the fan is disposed at the heat dissipation passage opening or the connection passage opening toward the developing element.
  • the cover of the present invention is closely coupled with the developing member and the adjacent member, and an insulating material such as an adhesive is added to the gap between the cover and the joint of the developing member and the adjacent member.
  • the adjacent elements are adjacent elements of relatively regular shape.
  • the adjacent element is a Fresnel lens, a polarizing plate, a glass plate or a plastic plate.
  • the heat dissipation channel is connected to the left or the right or communicated with the upper and lower sides; the fan is disposed on the left or right side or above or below the heat dissipation channel according to the direction of the heat dissipation channel.
  • the cover is flat or arched or meniscus or other shape.
  • the principle of the present invention is that the present invention first selects a relatively regular shape on both sides of the developing element, preferably a rectangular flat plate like the developing element, and the nearest adjacent element, such as a Fresnel lens, a polarizing plate, Glass plates, plastic plates, etc. (the imaging elements are generally adjacent to such elements).
  • the adjacent elements and the imaging element form two sides of a channel.
  • a complete passage can then be formed by adding a cover plate to the top and bottom of the two components.
  • the cover can be plastic or other formable material.
  • the dimensions of adjacent components and imaging components are not necessarily the same, and the shape may be more complicated. Therefore, the joint between the upper and lower covers and the components should be specific to the specific situation.
  • the need to adapt to different shapes ensures a tight fit between the cover and the component, with little or no air leakage, ensuring the application of the channel.
  • an insulating material such as an adhesive to the gap of the joint.
  • the present invention selects adjacent components with relatively regular shapes is to reduce the difficulty in manufacturing the cover plate and reduce the cost.
  • irregular adjacent components can also participate in the channel production, but the requirements for the joint with the cover plate are higher, the production is more complicated, and the cost is increased.
  • the shape of the cover itself of the present invention can also be variously selected, for example, it can be arched, curved or other shape as long as it does not affect the airtightness of the passage and does not block the light. In contrast, the flat shape is more space-saving and easy to make.
  • the passage of the present invention can be made to be connected to the left and right, or can be made to communicate with each other; the wind can be blown from left to right or from right to left, either from top to bottom or from bottom to top.
  • connection channel between the fan and the channel.
  • One end of the connecting channel is tightly fitted to the fan to ensure that the fan forms a wind in the channel.
  • the other end is closely connected to the channel formed by the developing element to form a complete channel.
  • the air volume formed by the fan almost completely bypasses the imaging surface, and participates in the heat dissipation of the imaging element, and the wind utilization rate will reach 90% or more.
  • the air utilization rate is improved and the heat dissipation effect is significantly improved, which means that fans with smaller power consumption, smaller size, lower noise and lower cost can be selected.
  • the joint portion of the connecting passage and the fan of the present invention should be specifically made according to the shape of the fan to achieve the purpose of tight fitting.
  • the junction of the channel connecting the channel to the imaging element The joint department should also be produced in detail to achieve the purpose of close cooperation.
  • the connecting channel itself acts as a transition from the fan to the imaging element, which can be long or short, can be large or small, and the shape is optimized to save material and space.
  • the flow direction of the fan can also be selected, and it can be blown or ventilated, which has nothing to do with the passage.
  • the invention can also establish a channel by using adjacent elements on both sides of the developing element, and the developing element is placed therein, so that a better effect can be achieved, but the channel section is larger, the connecting channel is increased in volume, and the cost is The complexity of the structure will increase.
  • the utility model has the beneficial effects that: the structural cylinder of the invention is reasonable, and the wind of the fan is blown through the developing component along a specified path by establishing a closed heat dissipation channel, so that the wind of the fan has directivity and thus has good heat dissipation performance. It dramatically increases the fan's wind utilization, reducing the cost and power consumption of the fan while maintaining a smaller fan size.
  • Fig. 1 is a schematic diagram of heat dissipation of a prior art developing element cooled by blowing.
  • Fig. 1B is a schematic view showing the heat dissipation of the prior art developing element by suction cooling.
  • Fig. 2A is a schematic view showing the structure of a fan when the first embodiment of the present invention is blown.
  • the figure is a cross-sectional view along the wind speed direction.
  • Fig. 2B is a schematic view showing the structure of the fan in the first embodiment of the present invention when the fan is exhausted.
  • the figure is a cross-sectional view along the wind speed direction.
  • Fig. 3 is a structural schematic view showing a joint portion between a cover plate and a developing member and an adjacent member of the first embodiment of the present invention.
  • the figure is a cross-sectional view of the heat dissipation channel perpendicular to the direction of the wind speed.
  • Fig. 4 is a view showing the structure of a joint portion between a cover plate and a developing member and an adjacent member of a second embodiment of the present invention.
  • the figure is a cross-sectional view of the heat dissipation channel perpendicular to the direction of the wind speed.
  • Figure 5 is a view showing a cover plate and a developing element and an adjacent element of a second embodiment of the present invention Another structural schematic of the joint.
  • the figure is a cross-sectional view of the heat dissipation channel perpendicular to the direction of the wind speed.
  • Figure 6 is a schematic view showing the structure of a third embodiment of the present invention. This figure is a cross-sectional view along the direction of wind speed.
  • a channel type heat dissipating device for a developing element in the projection system of the present invention includes a developing element 1, an adjacent element 2 of the developing element 1, a fan 3, and an image forming element 1 and adjacent
  • a heat dissipation passage 5 is formed between the developing element 1 and the adjacent elements 2 and the upper and lower covers 4, and the tuyere of the fan 3 faces the developing element 1.
  • a connecting passage 6 is also disposed between the fan 3 and the heat dissipating passage 5. The one end of the connecting passage 6 is closely fitted with the fan 3, and the other end is closely connected with the heat dissipating passage 5.
  • the cover plate 4 is tightly fitted with the developing element 1 and the adjacent element 2 as shown in FIG. 3, and an adhesive is added to the gap between the cover 4 and the joint of the developing element 1 and the adjacent element 2. Isolation materials such as agents.
  • the bonding between the cover 4 and the developing element 1 and the adjacent element 2 is closely matched.
  • the overall structure of the present invention is as described in Embodiment 1.
  • the adjacent elements 2 and the developing element 1 are different in size, and the shape is more complicated.
  • the joint between the upper and lower covers 4 and the elements is as shown in FIG.
  • the need to adapt to different shapes should be tailored to the specific situation to ensure The cover plate 4 is tightly fitted with the components to prevent leakage or air leakage, thereby ensuring the application effect of the passage.
  • the joint of the cover and the element can be designed as shown in Fig. 4 or Fig. 5.
  • the present invention establishes a heat dissipation channel 5 by two adjacent elements 2 on both sides of the developing element 1, and two cover plates 4 are disposed on the upper and lower sides of two adjacent elements, and the developing element 1 is placed A heat dissipation channel 5 is formed between the two adjacent components 2 and the upper and lower cover plates 4.
  • the air outlet of the fan 3 is disposed toward the imaging element 1, and a connection channel 6 is further disposed between the fan 3 and the heat dissipation channel 5.
  • the cover plate 4 is tightly fitted with the adjacent member 2, and an insulating material such as an adhesive is added to the gap between the cover member 4 and the joint portion of the adjacent member 2.
  • the combination of the cover 4 and the adjacent member 2 can also be in any of Figs. 3, 4, and 5 or in other manners.

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

Abstract

L’invention concerne un radiateur chauffant de type canal utilisé dans un composant d’affichage dans un système de projection, qui comprend un composant d’affichage, un composant adjacent qui est adjacent au composant d’affichage, un ventilateur et deux plaques de couverture prévues sur un côté supérieur et un côté inférieur du composant d’affichage et du composant adjacent. Un canal de dissipation thermique est formé par un espace prévu entre le composant d’affichage, le composant adjacent, le ventilateur et les deux plaques de couverture, et le ventilateur est prévu au niveau d’un orifice d’entrée du canal de dissipation thermique de manière telle que l’orifice de sortie du ventilateur est orienté vers le composant d’affichage. L’invention, d’une structure simple et raisonnable établit un canal pour souffler l’air à travers le composant d’affichage le long d’un passage spécifié, et fait en sorte que le ventilateur soit directionnel, ce qui lui procure des performances de dissipation thermique satisfaisantes en augmentant de façon considérable le rapport d’utilisation d’air soufflé à partir du ventilateur avec des coûts et une consommation d’énergie du ventilateur réduits et également un volume réduit du ventilateur.
PCT/CN2005/001389 2004-10-11 2005-09-02 Radiateur chauffant de type canal utilise dans un composant d’affichage dans un systeme de projection WO2006039855A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410081178.X 2004-10-11
CN 200410081178 CN1588228A (zh) 2004-10-11 2004-10-11 一种投影系统中显像元件用通道式散热装置

Publications (1)

Publication Number Publication Date
WO2006039855A1 true WO2006039855A1 (fr) 2006-04-20

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Application Number Title Priority Date Filing Date
PCT/CN2005/001389 WO2006039855A1 (fr) 2004-10-11 2005-09-02 Radiateur chauffant de type canal utilise dans un composant d’affichage dans un systeme de projection

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CN (1) CN1588228A (fr)
WO (1) WO2006039855A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441980A (zh) * 2019-08-02 2019-11-12 苏州佳世达光电有限公司 色轮散热系统及投影机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200728891A (en) 2006-01-27 2007-08-01 Coretronic Corp Projector
CN101055411B (zh) * 2006-04-10 2011-04-13 中强光电股份有限公司 投影机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1097195A (ja) * 1996-09-20 1998-04-14 Fujitsu General Ltd 表示装置の壁掛け金具
CN1391135A (zh) * 2001-06-11 2003-01-15 鸿友科技股份有限公司 防止热扰动液晶模组及液晶投影装置
JP2003075917A (ja) * 2001-09-03 2003-03-12 Hitachi Ltd 表示装置
CN1419163A (zh) * 2001-11-14 2003-05-21 中强光电股份有限公司 反射式液晶成像总成冷却装置
JP2003195420A (ja) * 2001-12-27 2003-07-09 Tamron Co Ltd プロジェクター用冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1097195A (ja) * 1996-09-20 1998-04-14 Fujitsu General Ltd 表示装置の壁掛け金具
CN1391135A (zh) * 2001-06-11 2003-01-15 鸿友科技股份有限公司 防止热扰动液晶模组及液晶投影装置
JP2003075917A (ja) * 2001-09-03 2003-03-12 Hitachi Ltd 表示装置
CN1419163A (zh) * 2001-11-14 2003-05-21 中强光电股份有限公司 反射式液晶成像总成冷却装置
JP2003195420A (ja) * 2001-12-27 2003-07-09 Tamron Co Ltd プロジェクター用冷却装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441980A (zh) * 2019-08-02 2019-11-12 苏州佳世达光电有限公司 色轮散热系统及投影机

Also Published As

Publication number Publication date
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