CN201233499Y - Intra circulation cooling system for back projection box - Google Patents
Intra circulation cooling system for back projection box Download PDFInfo
- Publication number
- CN201233499Y CN201233499Y CNU2008201330121U CN200820133012U CN201233499Y CN 201233499 Y CN201233499 Y CN 201233499Y CN U2008201330121 U CNU2008201330121 U CN U2008201330121U CN 200820133012 U CN200820133012 U CN 200820133012U CN 201233499 Y CN201233499 Y CN 201233499Y
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- China
- Prior art keywords
- air
- back projection
- cooling system
- circulating cooling
- projector
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- Expired - Fee Related
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Abstract
The utility model relates to an inner circulating cooling system of a rear-projection box body, an air outlet and an air inlet are formed at the surface of the box body, a sealed air channel which is respectively communicated with the air outlet and the air inlet is further arranged at the outside of the box body, a centrifugal exhaust fan is arranged on the air outlet, a cooling air making device and a thermal insulation layer are respectively arranged on the air channel, and the cooling air making device consists of a plurality of thermoelectric semiconductors which are serially arranged and respectively consists of two parts of a cold end and a hot end. The inner circulating cooling system can effectively carry out the circulating cooling of hot air in the rear-projection box body and further reduce the temperature of the interior of the rear-projection box body; as the whole air channel is the sealed structure, the inner circulating cooling system avoids the occurrence of the situation that an internal optical system of a projector is easy to absorb dust, thereby leading the projector to be operated in a clean environment, improving the brightness and the clearness of the projector during the projection and also prolonging the service life of each part.
Description
Technical field
The utility model relates to a kind of cooling system, especially a kind of interior circulating cooling system that is applicable to the back projection box house.
Background technology
Optical projection system (as projector, projection TV, projector, slide projector etc.) is divided into transmittive projection system and reflective projection system by the video picture mode of display element.When ray cast arrives DMD (Digital Micormirror Device digital micro-mirror), LCOS (Liquid Crystal On Silicon, belong to novel reflective micro LCD shadow casting technique, be called CMOS-LCD again) etc. reflect behind the display element, the reflection ray that carries image information forms image after optical elements such as camera lens are amplified to screen, such optical projection system is called reflective projection system.And after ray cast arrived liquid crystal display elements such as (LCD), the light of transmission imaging element carried image information, and is amplified to screen imaging through optical elements such as camera lenses, and such optical projection system is called transmittive projection system.For transmittive projection system, when light passes display element, there is part light to be rasterized the element absorption and is converted into heat energy, thereby the temperature of display element is increased significantly.Higher temperature not only can reduce picture quality, shorten the display element life-span, and serious also can make its thawing and thoroughly damage.So solve the heat dissipation problem of display element, rationally controlling its temperature is the key that ensures the stable operation of optical projection system long-term safety.In addition, the optical projection system that brightness is high more, the light that passes display element is many more, and the heat energy of conversion is also many more, and temperature is just high more, and the problem of heat radiation is just outstanding more.
At present, in optical projection system, mainly utilize air cooling way that visualization unit is lowered the temperature.It is mobile that so-called air cooling way utilizes the fan rotation to accelerate heat radiation object ambient air exactly, thereby heat is taken away the purpose that reaches cooling, general employing blowing and exhausting dual mode.So that reduce the temperature of display unit.Though adopt above-mentioned two kinds of methods that the high temperature of back projection display unit inside is eased, if but environment temperature is higher, then radiating effect is relatively poor, (main, but not active heat removal) because be passive heat radiation in addition because air flow fast, dust in air also can bulk deposition in projector inside, can be adsorbed on the key position of the optical systems such as camera lens, colour wheel, prism of projector as dust, not only can influence the brightness and the sharpness of projection, also can damage projector when serious.Therefore, the heat radiation of projector and dustproof these two big characteristics become a great problem to be solved in the projection industry.
The utility model content
The utility model is at the problem of existing back projection casing heat radiation with the weak effect that prevents dust, provide a kind of and can improve back projection box house air flow, reduce back projection box house air themperature, guarantee a kind of interior circulating cooling system of projector's running environment cleaning.
For achieving the above object, the utility model provides a kind of interior circulating cooling system, comprise the back projection casing, the surface of described back projection casing is provided with air outlet and air inlet, the described back projection casing outside also is provided with the air duct that is communicated with described air outlet and described air inlet respectively, and the cold air system that is respectively equipped with is put and thermofin on the described air duct.
Described air outlet is provided with centrifugal exhauster.
Described cold air system is put by a plurality of semiconductor thermoelectrics of arranging in order and is formed, and described semiconductor thermoelectric is made of semiconductor thermoelectric cold junction and semiconductor thermoelectric hot junction two parts.
Described semiconductor thermoelectric cold junction and described semiconductor thermoelectric hot junction are arranged at the inboard and the outside of described air duct respectively.
The surface of described air duct is a sealed construction.
Compared with prior art, the utlity model has following advantage:
The interior circulating cooling system that the utility model provides, the surface of back projection casing is provided with air outlet and air inlet, the back projection casing outside also is provided with the enclosure-type air duct that is communicated with air outlet and air inlet respectively, air outlet is provided with centrifugal exhauster, be respectively equipped with on the air duct that cold air system is put and thermofin, this cold air system is put by a plurality of semiconductor thermoelectrics that arrange in order, that be made of cold junction and hot junction two parts and is formed.The utility model can be effectively carries out circulating cooling with the hot-air of back projection box house, owing to adopt semiconductor thermoelectric active heat removal pattern, thus can reduce the temperature of back projection box house fast; Again because air duct integral body is sealed construction, stop to exchange with extraneous air, guaranteed permanent inner air cleanliness factor like this, avoided the situation that opticses such as projector's internal lens, colour wheel, prism adsorb dust easily to take place, projector can permanently be moved in clean environment, brightness and sharpness when not only having improved projector's projection have also increased serviceable life of each parts; In addition, because air exhauster is arranged at air duct inside, the noise when also having reduced the blower fan motion.The utility model project organization advantages of simple solves the problem that has the heat radiation of back projection casing and the weak effect that prevents dust now effectively.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram.
The main element symbol description is as follows:
1 casing, 2 air outlets, 3 air inlets
4 air exhausters, 5 air ducts, 6 semiconductor thermoelectrics
7 semiconductor thermoelectric cold junctions, 8 semiconductor thermoelectric hot junctions, 9 thermofins
Embodiment
Fig. 1 is the utility model one-piece construction synoptic diagram, the surface of casing 1 is provided with air outlet 2 and air inlet 3, the outside of casing 1 is provided with the air duct 5 that air outlet respectively 2 and air inlet 3 are interconnected, these air duct 5 integral surface sealed constructions, its two ends are communicated with air inlet 3 with air outlet 2 respectively.Air duct 5 tube wall both sides also are provided with a plurality of semiconductor thermoelectrics of arranging in order 6 near the position of air outlet 3, each semiconductor thermoelectric 6 constitutes by a semiconductor thermoelectric cold junction 7 and a semiconductor thermoelectric hot junction 8, and semiconductor thermoelectric cold junction 7 and semiconductor thermoelectric hot junction 8 are arranged at the inboard and the outside of air duct tube wall respectively.Tube wall outer surface between semiconductor thermoelectric 6 and the air outlet also is provided with thermofin 9, and an end of this thermofin 9 and the end of semiconductor thermoelectric fit, and the other end then fits with the junction of air outlet and air duct.In addition, also be provided with centrifugal exhauster 4 in the junction of air outlet 2 and air duct 5, this air exhauster is used for the high temperature air of box house is imported to air duct.
The passage that the utility model connects into a sealing with the air outlet and the air inlet of back projection casing, between seal channel, increase cooling device, air outlet at projector's seal box is loaded onto centrifugal exhauster, hot-air in projector's seal box is extracted in the seal channel, behind the cooling device of hot-air through the semiconductor thermoelectric cold junction, temperature has bigger reduction, get back to the air inlet of projector's seal box again through seal channel, entering projector's seal box cools off projector's heat generating components, projector's temperature is minimized, has guaranteed the operate as normal of its optics.In addition, because outside air circulates between casing and seal channel, isolate with the external world, thereby do not have dust and enter, avoided the situation of the optical system absorption dust of projector inside to take place, projector can be moved in permanent clean environment.
The utility model adopts semiconductor thermoelectric as cooling device, and the cold junction of semiconductor thermoelectric is arranged in the seal channel, and the hot junction of semiconductor thermoelectric is arranged on outside the seal channel.After applying DC voltage to semiconductor thermoelectric, the cold junction temperature of semiconductor thermoelectric sharply descends, and makes through herein hot air temperature to reduce.The temperature in semiconductor thermoelectric hot junction raises, and heat distributes to atmosphere.In addition, reduce cooling effect, will lack from semiconductor thermoelectric to this section of air inlet seal channel as far as possible, and will thermofin be set, its temperature is risen to guarantee cooled air at its channel surface in order to prevent heat interchange.
In sum, the utility model can be effectively carries out circulating cooling with the hot-air of back projection box house, thereby has reduced the temperature of box house; Again because air duct integral body is sealed construction, the situation of having avoided opticses such as projector's internal lens, colour wheel, prism to be adsorbed in dust easily takes place, projector can be moved in clean environment, brightness and sharpness when not only having improved projector's projection have also increased serviceable life and the stability of each parts; In addition, because air exhauster is arranged at air duct inside, the noise when also having reduced fan operation.The utility model project organization advantages of simple solves the problem that has the heat radiation of back projection casing and the weak effect that prevents dust now effectively.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (5)
1, circulating cooling system in the back projection casing, comprise the back projection casing, the surface of described back projection casing is provided with air outlet and air inlet, it is characterized in that, the described back projection casing outside also is provided with the air duct that is communicated with described air outlet and described air inlet respectively, and the cold air system that is respectively equipped with is put and thermofin on the described air duct.
2, circulating cooling system in the back projection casing as claimed in claim 1 is characterized in that described air outlet is provided with centrifugal exhauster.
3, circulating cooling system in the back projection casing as claimed in claim 1 is characterized in that, described cold air system is put by a plurality of semiconductor thermoelectrics of arranging in order and formed, and described semiconductor thermoelectric is made of semiconductor thermoelectric cold junction and semiconductor thermoelectric hot junction two parts.
4, circulating cooling system in the back projection casing as claimed in claim 3 is characterized in that described semiconductor thermoelectric cold junction and described semiconductor thermoelectric hot junction are arranged at the inboard and the outside of described air duct respectively.
5, circulating cooling system in the back projection casing as claimed in claim 1 is characterized in that the surface of described air duct is a sealed construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201330121U CN201233499Y (en) | 2008-07-29 | 2008-07-29 | Intra circulation cooling system for back projection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201330121U CN201233499Y (en) | 2008-07-29 | 2008-07-29 | Intra circulation cooling system for back projection box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233499Y true CN201233499Y (en) | 2009-05-06 |
Family
ID=40619880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201330121U Expired - Fee Related CN201233499Y (en) | 2008-07-29 | 2008-07-29 | Intra circulation cooling system for back projection box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233499Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760740A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Embedded type heat dissipation system of projector |
| CN103760738A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Projector cooling system with electric energy storage module |
| CN103760739A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Projector cooling system with fairing |
| WO2014173234A1 (en) * | 2013-04-25 | 2014-10-30 | 深圳市光峰光电技术有限公司 | Wavelength conversion device and related light emitting device |
| CN104284567A (en) * | 2014-10-20 | 2015-01-14 | 中山市安领星电子科技有限公司 | Heat-dissipating type high-voltage pulse electronic fence host |
| CN106054505A (en) * | 2015-04-08 | 2016-10-26 | 精工爱普生株式会社 | Projector |
| CN106444234A (en) * | 2016-09-21 | 2017-02-22 | 苏州佳世达光电有限公司 | Projection apparatus |
| CN106733770A (en) * | 2016-12-08 | 2017-05-31 | 无锡市东赫金属制品有限公司 | A kind of cleaning device for copper strip of high working efficiency |
| WO2017107970A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市光峰光电技术有限公司 | Heat dissipation apparatus for color wheel, light source module, and projection system |
| WO2018018974A1 (en) * | 2016-07-27 | 2018-02-01 | 深圳市光峰光电技术有限公司 | Colour wheel device and projector |
| CN110244504A (en) * | 2019-06-17 | 2019-09-17 | 宁波暴雪信息技术开发有限公司 | A kind of Multifunctional education projector apparatus |
-
2008
- 2008-07-29 CN CNU2008201330121U patent/CN201233499Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10401014B2 (en) | 2013-04-25 | 2019-09-03 | Appotronics Corporation Limited | Sealed wavelength conversion device and cooling system |
| WO2014173234A1 (en) * | 2013-04-25 | 2014-10-30 | 深圳市光峰光电技术有限公司 | Wavelength conversion device and related light emitting device |
| TWI507805B (en) * | 2013-04-25 | 2015-11-11 | Appotronics Corp Ltd | Wavelength converting device |
| CN105135365A (en) * | 2013-04-25 | 2015-12-09 | 深圳市光峰光电技术有限公司 | Wavelength conversion device and related light-emitting device |
| EP2990722A4 (en) * | 2013-04-25 | 2016-12-14 | Appotronics Corp Ltd | Wavelength conversion device and related light emitting device |
| CN103760739A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Projector cooling system with fairing |
| CN103760740A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Embedded type heat dissipation system of projector |
| CN103760738A (en) * | 2014-01-14 | 2014-04-30 | 上海交通大学 | Projector cooling system with electric energy storage module |
| CN104284567A (en) * | 2014-10-20 | 2015-01-14 | 中山市安领星电子科技有限公司 | Heat-dissipating type high-voltage pulse electronic fence host |
| CN106054505B (en) * | 2015-04-08 | 2018-05-01 | 精工爱普生株式会社 | Projecting apparatus |
| CN106054505A (en) * | 2015-04-08 | 2016-10-26 | 精工爱普生株式会社 | Projector |
| WO2017107970A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市光峰光电技术有限公司 | Heat dissipation apparatus for color wheel, light source module, and projection system |
| CN107664903B (en) * | 2016-07-27 | 2020-04-28 | 深圳光峰科技股份有限公司 | Color wheel device and projector |
| CN107664903A (en) * | 2016-07-27 | 2018-02-06 | 深圳市光峰光电技术有限公司 | Color wheel device and projector |
| WO2018018974A1 (en) * | 2016-07-27 | 2018-02-01 | 深圳市光峰光电技术有限公司 | Colour wheel device and projector |
| US10663845B2 (en) | 2016-07-27 | 2020-05-26 | Appotronics Corporation Limited | Color wheel device and projector |
| CN106444234A (en) * | 2016-09-21 | 2017-02-22 | 苏州佳世达光电有限公司 | Projection apparatus |
| CN106733770A (en) * | 2016-12-08 | 2017-05-31 | 无锡市东赫金属制品有限公司 | A kind of cleaning device for copper strip of high working efficiency |
| CN110244504B (en) * | 2019-06-17 | 2021-02-26 | 宁波市法诺工业产品设计有限公司 | Multifunctional education projector device |
| CN110244504A (en) * | 2019-06-17 | 2019-09-17 | 宁波暴雪信息技术开发有限公司 | A kind of Multifunctional education projector apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20140729 |
|
| EXPY | Termination of patent right or utility model |