CN1591166A - Colour separating or mixing imaging cooler and cooling system for liquid crystal projector - Google Patents
Colour separating or mixing imaging cooler and cooling system for liquid crystal projector Download PDFInfo
- Publication number
- CN1591166A CN1591166A CN 03140395 CN03140395A CN1591166A CN 1591166 A CN1591166 A CN 1591166A CN 03140395 CN03140395 CN 03140395 CN 03140395 A CN03140395 A CN 03140395A CN 1591166 A CN1591166 A CN 1591166A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- cooling device
- mixing
- color splitting
- crystal panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a cooling device for colour separation and synthesis system of liquid crystal projector and its system. Its cooling device includes thermoelectric cooler (TEC) without sound source and radiation fin, and adopts the static forced cooling mode to make cooling, and adds a temperature monitoring system and dust-proof device to make comprehensive protection. Said invention not only can effectively cool the colour separation and synthesis system, but also can produce the effect of resisting dust and reducing noise.
Description
Technical field
The present invention relates to a kind of liquid crystal projector, the cooling device and the system of the imaging of particularly a kind of liquid crystal projector color splitting and mixing.
Background technology
Along with the progress of liquid crystal manufacturing and control technology, liquid crystal projection apparatus has been widely used in different fields.The optical texture of known liquid crystal projector comprises illuminator (comprise lighting bulb and produce evenly, the single light beam of high strength system etc.), color splitting and mixing imaging system (comprising liquid crystal panel, color splitting and mixing prism system and polarized systems etc.) and projecting lens etc. at least.And the color splitting and mixing imaging system occupies an important position in liquid crystal projector, but the color splitting and mixing imaging system is worked in than the strong beam irradiation, and the working temperature that liquid crystal panel and optical device require is lower, its protection quality is to the liquid crystal panel life-span simultaneously, and picture steadiness, final image quality have significant effects.There is following problem in the liquid crystal projector color splitting and mixing imaging system protection of known techniques:
1. the type of cooling is undesirable.All there are some problems in air cooling that prior art utilized and liquid cooling, and as in air cooling method, the fan rotation will produce noise or dust is flown upward; And in liquid cooling method, need be placed in liquid crystal panel to liquid cools off on every side, and this is disadvantageous for miniaturization.In addition, the temperature of cooling liquid also is subjected to the influence of panel surrounding environment.Therefore, cooling effect instability.Especially, when miniaturization Design makes that optical component structure is compact, the corresponding increase of the environment temperature of optics periphery, the temperature of cooling liquid is along with increase like this.Therefore, cooling effect is relatively poor.Adopt air cooling and liquid cooling also can bring following two accessory problems simultaneously.
2. noise is bigger.General color splitting and mixing imaging system adopts fan forced air cooling or natural air cooling dual mode.Because the heat of cooling place is concentrated, must adopt powerful fan, unavoidably can bring noise.When quiet picture showed, noise effect was more obvious especially.And natural air cooling need comprise a large amount of ventilating openings, and the problem that these ventilating openings can bring dust to enter.
3. dust protection is relatively poor.It is that color splitting and mixing prism, liquid crystal panel and polarized systems optical device etc. have a place or many places to expose outside structure that general color splitting and mixing imaging system adopts unenclosed construction, and being subjected on every side, dust influences bigger.Even if optical device does not have exposed,, also leave more ventilating opening in order to dispel the heat.Dust still can be brought into from ventilating opening, thereby surface optical device is caused certain pollution, degradation phenomenon under, the brightness fuzzy such as blackspot, image quality occurs thereby make in the display frame.
Summary of the invention
An object of the present invention is to provide a kind of liquid crystal projector color splitting and mixing imaging cooling device, it is the liquid coolant crystal panel effectively.
Another object of the present invention provides a kind of liquid crystal projector color splitting and mixing imaging system, can effectively cool off, and the liquid crystal projector that relates to a kind of dust protection, noiselessness, cooling fast closes the look imaging system.
In order to reach as above purpose, solution of the present invention is: adopt liquid crystal panel cooling device, temperature monitoring system and dust protection device to carry out integrated protection, guarantee that the imaging of liquid crystal projector color splitting and mixing has the function of dust protection, noiselessness, quick cooling preferably.Liquid crystal panel is forced to cool off by the liquid crystal panel cooling device statically, owing to adopt the TEC of no sound source and the type of cooling that heat radiator combines, makes liquid crystal panel cool off noiselessness.
In one embodiment of the invention, for further cooling also provides the color splitting and mixing prism/polarization deciliter light prism cooling device that has with liquid crystal panel cooling device same structure.This color splitting and mixing prism/polarization deciliter light prism cooling device cools off color splitting and mixing prism/polarization deciliter light prism, both can effectively cool off this color splitting and mixing prism/polarization deciliter light prism, can not occur bringing because of fan any trouble of noise or floating dust again.
In order further to reach suitable cooling effect, the present invention also comprises a temperature monitoring system.Temperature monitoring system can also carry out intelligent temperature control, thereby controls the serviceability temperature of color splitting and mixing prism/polarization deciliter light prism and liquid crystal panel, reaches the optimum temperature of optical device requirement.
In addition, in order to realize better dustproof effect, the present invention also comprises a dust protection device, and this dust protection device is wrapped in whole liquid crystal projector color splitting and mixing imaging system in the housing, better avoids dust to enter.
Since the TEC (thermoelectric cooling sheet) and the heat radiator type of cooling of the no sound source that adopts, temperature control system and dust protection device, and the present invention has the following advantages and is:
1. the type of cooling is good.Utilize the TEC and the heat radiator type of cooling, not only can effectively cool off the color splitting and mixing imaging system; And temperature can be controlled in the operating temperature range of each optical device requirement, prolong the serviceable life of device simultaneously;
2. noise is little.Owing to adopt the static refrigeration of TEC and heat radiator, do not need fan, auxiliary equipment such as air channel are dispelled the heat, thereby noise is less;
3. dust tightness is good.Owing to the present invention includes a dust protection device, the structure of this dust guard is the housing in a few slit, thereby has avoided effect of dust;
4. structure and manufacturing process are comparatively simple.Owing to do not adopt extra air channel, fan and install and fix part, thereby die sinking expense when producing in batches and processing charges etc., the flow process that simplifies the operation, convenient for assembly and debugging have been saved.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in detail.
Fig. 1 for liquid crystal panel cooling device of the present invention stereographic map.
Fig. 2 is the stereographic map of color splitting and mixing prism/polarization of the present invention deciliter light prism cooling device.
Fig. 3 is one of a kind of liquid crystal projector color splitting and mixing of the present invention imaging cooling device
The stereographic map of specific embodiment.
Fig. 4 is the stereographic map of a kind of liquid crystal projector color splitting and mixing of the present invention imaging system.
Fig. 5 is the side view of a kind of liquid crystal projector color splitting and mixing of the present invention imaging system.
Fig. 6 is the vertical view of a kind of liquid crystal projector color splitting and mixing of the present invention imaging system.
Fig. 7 is the partial sectional view of the cooling device of a kind of liquid crystal projector color splitting and mixing of the present invention imaging.
Fig. 8 is the principle schematic of the temperature monitoring system of a kind of liquid crystal projector color splitting and mixing of the present invention imaging system.
Embodiment
Fig. 1 is the stereographic map of a kind of liquid crystal projector color splitting and mixing of the present invention imaging cooling device, and described this cooling device 10 comprises TEC11 and heat radiator 12 compositions.Generally can use three liquid crystal panel cooling devices 10 in liquid crystal projector color splitting and mixing imaging system, the quantity difference of the liquid crystal panel 20 of different liquid crystal projector color splitting and mixing imaging systems, DLP as monolithic has only a liquid crystal panel 20, then adopts a liquid crystal panel cooling device 10 promptly passable; Two LCOS then adopts two liquid crystal panel cooling devices 10, that is to say, the quantity of liquid crystal panel cooling device 10 can be set according to the quantity of liquid crystal panel 20, TEC101 comprises hot junction 111 and cold junction 112, fixedly connected by heat conduction curing glue with heat radiator 12 in this hot junction 111, wherein this heat radiator 12 is made by the metal material with high thermal conductivity, for example aluminium or copper.Wherein this cold junction 112 is fixedlyed connected by heat conduction curing glue with liquid crystal panel 20, in addition, this heat radiator 12 comprises a plurality of cylindrical holes 121, usefulness UV is gluing connects for this cylindrical hole 121 and heat sink 12, and guaranteeing the fixing of each liquid crystal panel cooling device 10 and liquid crystal panel 20, heat radiator 12 has two functions of heat radiation and fixed installation liquid crystal panel at liquid crystal panel cooling device 10.
In one embodiment of the invention, liquid crystal projector color splitting and mixing imaging cooling device also can comprise color splitting and mixing prism/polarization deciliter light prism cooling device 30 of two liquid crystal panel cooling device cooling principle unanimities, be placed at the both sides of color splitting and mixing prism/polarization deciliter light prism 40, this color splitting and mixing prism/polarization deciliter light prism cooling device comprises TEC31 and heat radiator 32.Wherein TEC31 comprises a hot junction 311 and a cold junction 312, and wherein this hot junction 311 and heat radiator 32 solidify glue by heat conduction and fixedly connected, and wherein this heat radiator 32 is high thermal conductivities metal material is made, for example aluminium or copper.As shown in Figure 2, this cold junction 312 and and color splitting and mixing prism 40 between also adopt heat conduction to solidify glue glued adhesion, thereby reduce thermal resistance, improve cooling effect.
In the structure of above-mentioned liquid crystal projector color splitting and mixing imaging cooling device 10, when liquid crystal panel 20 by absorbing light and adstante febre, TEC11 and TEC31 can carry out automatism voltage control by temperature control system 50, thereby reach temperature automatically controlled effect.
As a result, because liquid crystal projector color splitting and mixing imaging cooling device 10 pairs of color splitting and mixing prism/polarizations deciliter light prism 40 and liquid crystal panel 20 are forced cooling mutually statically.Therefore, can effectively reduce the working temperature of liquid crystal panel 20 and color-combination prism/polarization deciliter light prism 40, and do not adopt conventional fan etc. that liquid crystal panel 20 and color-combination prism/polarization deciliter light prism are cooled off, therefore, suppress the influence that floating dust caused that fan brings to the image quality difference.
The imaging system of the liquid crystal projector color splitting and mixing prism that the present invention includes liquid crystal projector color splitting and mixing imaging cooling device 10 is described below.Fig. 4 is the explosive view of the color splitting and mixing imaging system of liquid crystal projector of the present invention, in order to further describe structure of the present invention, and Fig. 5, Fig. 6, Fig. 7 is side view, vertical view and the part sectioned view of the imaging system of liquid crystal projector color splitting and mixing prism of the present invention.As Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, as shown in Figure 4, the color splitting and mixing imaging system 1 of liquid crystal projector of the present invention comprises liquid crystal projector color splitting and mixing imaging cooling device 10, temperature monitoring system 50 and dust protection device 60;
Wherein, this liquid crystal projector color splitting and mixing imaging cooling device 10 is fixing with dust protection main component 61 and dust protection front shroud 62 respectively by screw hole 621 and screw hole 631.The heat of color splitting and mixing prism/polarization deciliter light prism 40 sheds by liquid crystal projector color splitting and mixing imaging cooling device 10 and dust protection device 60.
As shown in Figure 4, crossing threaded hole 613 is connected with color splitting and mixing imaging system 1, this dust protection device 60 is by dust protection main component 61, dust protection front shroud 62 and dust protection bottom 63 are formed, in order to cooperate the structure of color splitting and mixing imaging system 1, this dust protection main component 61 comprises first through hole 611 and second through hole 612, wherein first through hole 611 is in order to the components and parts of ccontaining illuminator 70, and logical second through hole 612 cooperates projecting lens 80, and be fixed on the dust protection main component 31 by threaded hole 614, dust protection front shroud 32 and dust protection bottom 63 comprise some cable holes 321, this cable hole is connected with outside circuit in order to cooperate color splitting and mixing imaging system 1, dust protection device 60 is sealed in the color splitting and mixing imaging system among the housing, stoped the dust that enters from illuminator 70 and projecting lens 80, and assemble sequence is reasonable, is convenient to produce in batches.
Fig. 8 is the principle schematic of temperature temperature monitoring system 50 of the present invention, as shown in Figure 3, temperature monitoring system 50 is as a unit that is independent of mechanical structured member, and this temperature monitoring system 50 comprises direct supply 51, voltage intelligent regulating device 52 and temperature feedback system 53 etc.Wherein temperature monitoring system 50 links with TEC11 and TEC31 respectively by lead.Temperature feedback system 53 carries out power adjustment for voltage intelligent regulating device 52 Temperature Feedback that detects, control refrigeration work consumption, thereby the operate as normal of assurance device.If the heat of color splitting and mixing prism/polarization deciliter light prism 40 or liquid crystal panel 20 exceeds the heat-sinking capability of each several part cooling device or the working temperature of setting, the hummer 54 of temperature monitoring system 50 can send alarm sound, automatically extinguish with rear lighting lamp, from guarantee the security of system less at all.
The above person only is most preferred embodiment of the present invention, is not to be used to limit the scope of the invention, and all equivalences of being done according to the present patent application claim change or modify, and are all the present invention and contain.
Claims (16)
1. liquid crystal projector color splitting and mixing imaging cooling device, it is characterized in that, this device comprises at least one liquid crystal panel cooling device, and this liquid crystal panel cooling device is fixed on the surface of liquid crystal panel, and this liquid crystal panel cooling device is used for the static liquid coolant crystal panel of forcing.
2. liquid crystal projector color splitting and mixing imaging cooling device as claimed in claim 1 is characterized in that this liquid crystal panel cooling device comprises TEC and heat radiator, and wherein the cold junction of this TEC contacts with liquid crystal panel, fixedlys connected with heat radiator in the hot junction of TEC.
3. liquid crystal projector color splitting and mixing imaging cooling device as claimed in claim 2 is characterized in that, TEC is the power supply of adopting direct supply, the TEC that refrigeration work consumption is adjustable.
4. liquid crystal projector color splitting and mixing imaging cooling device as claimed in claim 2 is characterized in that, fixedlys connected by heat conduction curing glue with heat sink in the hot junction of this TEC.
5. liquid crystal projector color splitting and mixing imaging cooling device as claimed in claim 1, it is characterized in that this imaging cooling device also can comprise a temperature control system, in order to pass through to adjust parameter, the radiating effect of control liquid crystal panel cooling device satisfies the working temperature requirement of liquid crystal panel.
6. liquid crystal projector color splitting and mixing imaging cooling device as claimed in claim 5, it is characterized in that, this temperature monitoring system comprises a voltage intelligent regulating device, controls the radiating effect of color splitting and mixing prism cooling device and liquid crystal panel cooling device in order to automatic adjustment voltage.
7. liquid crystal projector color splitting and mixing cooling device as claimed in claim 5; it is characterized in that; this temperature monitoring system also comprises a hummer; when the heat of liquid crystal panel exceeds the working temperature of the heat-sinking capability of cooling device separately or setting or TEC when downright bad; this hummer can send alarm sound; automatically extinguish with back lighting, protect not being damaged of color splitting and mixing imaging system.
8. a liquid crystal projector color splitting and mixing imaging system is characterized in that, this system comprises at least one liquid crystal panel cooling device, and this liquid crystal panel cooling device is fixed on the surface of liquid crystal panel, and this liquid crystal panel cooling device is used for the static liquid coolant crystal panel of forcing; One temperature monitoring system, this temperature monitoring system is by adjusting parameter, and the radiating effect of control liquid crystal panel cooling device satisfies the working temperature requirement of liquid crystal panel.
9. liquid crystal projector imaging system as claimed in claim 8 is characterized in that, this system comprises a dust protection device, this dust protection device with color splitting and mixing imaging system cooling device in wherein.
10. liquid crystal projector imaging system as claimed in claim 8 is characterized in that, this system also can comprise at least one color splitting and mixing prism/polarization deciliter light prism cooling device.
11. liquid crystal projector color splitting and mixing imaging system as claimed in claim 10, it is characterized in that, this color splitting and mixing prism/polarization deciliter light prism cooling device comprises TEC and heat radiator, wherein the cold junction of TEC directly contacts with color splitting and mixing prism/polarization color splitting and mixing prism, fixedlys connected with heat sink in the hot junction of TEC.
12. the liquid crystal projector color splitting and mixing imaging system as claim 8 is stated is characterized in that this liquid crystal panel cooling device comprises TEC and heat radiator, wherein the cold junction of this TEC and liquid crystal panel are in contact with one another, and fixedly connected with heat radiator in the hot junction of TEC.
13., it is characterized in that the hot junction of this TEC is solidified glue with heat sink by heat conduction and fixedlyed connected as liquid crystal projector color splitting and mixing imaging system as described in claim 11 or 12.
14. as claim 11 or 12 described liquid crystal projector color splitting and mixing imaging systems, its feature TEC adopts DC power supply, the TEC that refrigeration work consumption is adjustable.
15. liquid crystal projector color splitting and mixing imaging system as claimed in claim 8, it is characterized in that, this temperature monitoring system comprises a voltage intelligent regulating device, controls the radiating effect of color splitting and mixing prism/polarization color splitting and mixing prism cooling device and liquid crystal panel cooling device in order to automatic adjustment voltage.
16. liquid crystal projector color splitting and mixing imaging system as claimed in claim 8; it is characterized in that; this temperature monitoring system also comprises a hummer; when the heat of color splitting and mixing prism/polarization color splitting and mixing prism or liquid crystal panel exceeds the working temperature of the heat-sinking capability of cooling device separately or setting or TEC when downright bad; this hummer can send alarm sound; automatically extinguish with back lighting, protect not being damaged of color splitting and mixing imaging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03140395 CN1591166A (en) | 2003-09-05 | 2003-09-05 | Colour separating or mixing imaging cooler and cooling system for liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03140395 CN1591166A (en) | 2003-09-05 | 2003-09-05 | Colour separating or mixing imaging cooler and cooling system for liquid crystal projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1591166A true CN1591166A (en) | 2005-03-09 |
Family
ID=34597353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03140395 Pending CN1591166A (en) | 2003-09-05 | 2003-09-05 | Colour separating or mixing imaging cooler and cooling system for liquid crystal projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1591166A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7815316B2 (en) | 2007-09-28 | 2010-10-19 | Hon Hai Precision Industry Co., Ltd. | Projector having digital micromirror device with thermoelectric cooling chip attached thereto |
| CN102460298B (en) * | 2009-06-05 | 2015-04-01 | Lg电子株式会社 | Projector |
| CN108469710A (en) * | 2018-04-29 | 2018-08-31 | 中国华录集团有限公司 | A kind of laser diode cooling system of laser-projector |
| CN108663878A (en) * | 2018-04-29 | 2018-10-16 | 中国华录集团有限公司 | Laser light projection display system |
| CN110632812A (en) * | 2019-10-12 | 2019-12-31 | 广东联大光电有限公司 | DLP projector with improved cooling system |
| CN113721411A (en) * | 2020-05-26 | 2021-11-30 | 苏州佳世达光电有限公司 | Liquid crystal projector |
-
2003
- 2003-09-05 CN CN 03140395 patent/CN1591166A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7815316B2 (en) | 2007-09-28 | 2010-10-19 | Hon Hai Precision Industry Co., Ltd. | Projector having digital micromirror device with thermoelectric cooling chip attached thereto |
| CN101398601B (en) * | 2007-09-28 | 2010-11-10 | 鸿富锦精密工业（深圳）有限公司 | Radiating device |
| CN102460298B (en) * | 2009-06-05 | 2015-04-01 | Lg电子株式会社 | Projector |
| CN108469710A (en) * | 2018-04-29 | 2018-08-31 | 中国华录集团有限公司 | A kind of laser diode cooling system of laser-projector |
| CN108663878A (en) * | 2018-04-29 | 2018-10-16 | 中国华录集团有限公司 | Laser light projection display system |
| CN110632812A (en) * | 2019-10-12 | 2019-12-31 | 广东联大光电有限公司 | DLP projector with improved cooling system |
| CN113721411A (en) * | 2020-05-26 | 2021-11-30 | 苏州佳世达光电有限公司 | Liquid crystal projector |
| CN113721411B (en) * | 2020-05-26 | 2023-08-18 | 苏州佳世达光电有限公司 | Liquid crystal projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5010311B2 (en) | Projection display | |
| EP0869388B1 (en) | Projection display having light source | |
| US6350033B1 (en) | Projector | |
| US10191359B2 (en) | Illumination apparatus and image display apparatus using the illumination apparatus | |
| WO2010140751A1 (en) | Projector | |
| WO2003019273A1 (en) | Liquid crystal projector | |
| CN1573521A (en) | Cooling device and optical device and projector having the cooling device | |
| CN1591166A (en) | Colour separating or mixing imaging cooler and cooling system for liquid crystal projector | |
| WO2020032550A1 (en) | Display device | |
| CN110750027B (en) | Projector with a light source | |
| CN100526975C (en) | Optical device and projector | |
| CN108761879A (en) | A kind of new waterproof display module | |
| CN111856857B (en) | Projection device and heat dissipation control method thereof | |
| CN1540425A (en) | Electrooptical device with mounting casing and projecting displaying device and mounting casing | |
| TW200422767A (en) | Cased electro-optical apparatus, projection display apparatus, and case | |
| CN212623547U (en) | Lighting imaging device of laser projector | |
| US6203159B1 (en) | Projector | |
| CN214535839U (en) | Electric spotlight | |
| CN219264208U (en) | Projection lamp | |
| CN219592522U (en) | Camera heat abstractor | |
| CN217767169U (en) | Projection equipment and projection system | |
| JPH10319853A (en) | Heat radiating type liquid crystal display element holder and projecting device using the same | |
| KR102363890B1 (en) | Infrared LED lighting device for infrared cameras with improved heat dissipation performance | |
| CN100480846C (en) | Housing for optical components, and projector | |
| CN212841162U (en) | Movie & TV lamp light source and movie & TV lamps and lanterns |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |