CN109917609A - A kind of liquid crystal projection apparatus that screen temperature is effectively reduced - Google Patents
A kind of liquid crystal projection apparatus that screen temperature is effectively reduced Download PDFInfo
- Publication number
- CN109917609A CN109917609A CN201910221057.7A CN201910221057A CN109917609A CN 109917609 A CN109917609 A CN 109917609A CN 201910221057 A CN201910221057 A CN 201910221057A CN 109917609 A CN109917609 A CN 109917609A
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- China
- Prior art keywords
- liquid crystal
- annular housing
- polarized light
- projection apparatus
- effectively reduced
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Abstract
The invention discloses a kind of liquid crystal projection apparatus that screen temperature is effectively reduced, belong to projector field, including the LED light source component set gradually, optics guiding device, incident Fresnel lenses and liquid crystal display, the LED light source component includes substrate and LED chip, the rear of the LED chip is arranged in the substrate, polarized light separator is provided in front of the LED light source, the LED light source component and polarized light separator are arranged in annular housing, the annular housing absorbs the light of polarized light separator reflection, the rear connection of the annular housing is for thermally conductive heat sink, the front of the annular housing is emitted the light that the polarized light separator penetrates, the optics guiding device is set in front of the polarized light separator；The present invention LCD liquid crystal display can be imaged should not polarised light reflection-absorption, avoid being projected on liquid crystal display and generate heat, reduce the temperature of liquid crystal display, fundamentally so as to fundamentally promote projection quality.
Description
Technical field
The present invention relates to liquid crystal projection apparatus fields, and in particular to a kind of liquid crystal projection apparatus that screen temperature is effectively reduced.
Background technique
Projector, also known as projector are a kind of equipment that can be projected image or video on curtain, can be by not
The same computer of interface together, VCD, DVD, BD, game machine, DV etc., which are connected, plays corresponding vision signal.LCD liquid crystal projection apparatus
A seed type of projector, LCD projector have the advantages that color rendition preferably, it is high resolution, small in size, light-weight, take
It is also very convenient that band gets up, and is currently the main product in projector market.
Currently, the projection arrangement based on Single panel LCD liquid crystal technology, in actual use, the polaroid meeting of liquid crystal display
Absorb the P light (or S light) in source light.The light of absorption will become heat, and this heat will lead to liquid crystal display temperature
Degree increases, to influence the liquid crystal running in liquid crystal display.Under serious situation, liquid crystal molecule can be burnt, so that failure be imaged.Cause
This liquid crystal display has an operating temperature section, currently in order to the temperature of liquid crystal display is reduced, frequently with air-cooled mode, heat dissipation effect
Bad, structure is complicated.
Summary of the invention
It is an object of the invention to: a kind of liquid crystal projection apparatus that screen temperature is effectively reduced is provided, liquid crystal is fundamentally reduced
The temperature of screen, solving the current a large amount of unwanted polarised lights of liquid crystal display absorption causes temperature to increase, to influence crystal projection
The technical issues of instrument service life.
The technical solution adopted by the invention is as follows:
It is a kind of be effectively reduced screen temperature liquid crystal projection apparatus, including set gradually LED light source component, optics guiding device,
Incident Fresnel lenses and liquid crystal display, the LED light source component include substrate and LED chip, and the substrate is arranged in the LED
The rear of chip is provided with polarized light separator, the LED light source component and polarized light separator in front of the LED chip
It is arranged in annular housing, the annular housing absorbs the polarised light of polarized light separator reflection, the annular housing
For thermally conductive heat sink, the front of the annular housing is emitted the polarised light that the polarized light separator penetrates for rear connection,
The optics guiding device is set in front of the polarized light separator.
Further, the annular housing is ferrous metal cavity.
Further, the polarized light separator is the prism of glued plated film or surface coating.
Further, the polarized light separator is through the polaroid being arranged on the angle of polarised light and the liquid crystal display
Rotation angular compliance.
Further, the heat sink connection heat pipe, the heat pipe connection cooling fin are radiated by heat radiating system of whole machine.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the light reflection-absorption unrelated with imaging can be avoided being projected on liquid crystal display and generate heat by the present invention, from
The temperature for fundamentally reducing liquid crystal display, extends the service life of liquid crystal display.
2. the present invention can not only reduce liquid crystal display fever, moreover it is possible to reduce stray light, increase picture contrast.
3. the present invention can be not only used for the manufacture very high projector of brightness, applies also for manufacture and dust-proof throwing is fully sealed
Shadow instrument.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural diagram of the present invention
Marked in the figure: 1- is heat sink, and 2- annular housing, 3- optics guiding device, 4- substrate, 5-LED chip, the separation of 6- polarisation
Device, 7- incidence Fresnel lenses, 8- polaroid, 9- liquid crystal display.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.P light and S light described in the present invention, are phases
Pair concept, the polarised light to intersect vertically is separated, and one kind being defined as P light, and one kind being defined as S light, and title can be mutual
Exchange.
It is a kind of be effectively reduced screen temperature liquid crystal projection apparatus, including set gradually LED light source component, optics guiding device 3,
Incident Fresnel lenses 7 and liquid crystal display 9, the LED light source component include substrate 4 and LED chip 5, and the substrate 4 is arranged in institute
The rear of LED chip 5 is stated, the front of the LED chip 5 is provided with polarized light separator 6, the LED light source component and polarisation
Separator 6 is arranged in annular housing 2, and the annular housing 2 absorbs the polarised light that polarized light separator 6 reflects, institute
The rear connection of annular housing 2 is stated for thermally conductive heat sink 1, the front of the annular housing 2 is emitted the polarized light separator 6
The optics guiding device 3 is arranged in front of the polarized light separator 6 in the polarised light of transmission.
The annular housing 2 is ferrous metal cavity.
The polarized light separator 6 is the prism of glued plated film or surface coating.
Rotation of the polarized light separator 6 through the polaroid 8 being arranged on the angle of polarised light and the liquid crystal display 9
Angular compliance, common angle are 45 degree, 90 degree and 135 degree.
The heat sink 1 connection heat pipe, the heat pipe connection cooling fin are radiated by heat radiating system of whole machine.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of liquid crystal projection apparatus that screen temperature is effectively reduced that present pre-ferred embodiments provide, including the LED set gradually
Light source assembly, optics guiding device 3, incident Fresnel lenses 7 and liquid crystal display 9, the spatial relation of each component and setting side
Formula is the conventional arrangement of this field.
The present embodiment is directed to 5.8 cun of liquid crystal displays 9, then 5 area of LED chip is about 16mm*10mm, selects 16mm*16mm
Polarized light separator 6 be placed in front of LED light source, the rear of the LED chip 5 is arranged in the substrate 4.
The polarized light separator 6 is the prism of glued plated film, and the tilt angle of reflecting surface is 45 degree, polarizing angle and
Optical level face intersects 45 degree, is fixed in annular housing 2, which can reflect S light, liquid crystal by P light
45 degree of polaroid 8 is intersected in setting with optical level face on screen 9, can effectively coincide anterior lens transmitted through P light be used for
Imaging.
For annular housing 2 using the metal cavity of black, it is described that the S light that polarized light separator 6 reflects is converted into heat
Metal cavity absorbs, and the rear connection of the annular housing 2 is used for thermally conductive heat sink 1, and the front of the annular housing 2 is emitted institute
The light of the transmission of polarized light separator 6 is stated, the optics guiding device 3 is set in front of the polarized light separator 6.
The optics guiding device 3 both can also can directly dock the annular chamber with the fully wrapped around annular housing 2
Body 2.
Embodiment 2
A kind of liquid crystal projection apparatus that screen temperature is effectively reduced that present pre-ferred embodiments provide, establishes the base in embodiment 1
On plinth, the material of annular housing 2 is the metallic aluminium of oxidizing blackening, and the rear end of annular housing 2 is fixed by screw and heat conductive silica gel
On heat sink 1, heat sink 1 is led heat on external cooling fin by heat pipe, and cooling fin again takes away whole heat.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. it is a kind of be effectively reduced screen temperature liquid crystal projection apparatus, including set gradually LED light source component, optics guiding device (3),
Incident Fresnel lenses (7) and liquid crystal display (9), the LED light source component include substrate (4) and LED chip (5), the substrate
(4) it is arranged at the rear of the LED chip (5), it is characterised in that: polarisation separation dress is provided in front of the LED chip (5)
It sets (6), the LED light source component and polarized light separator (6) are arranged in annular housing (2), and the annular housing (2) is inhaled
The polarised light of polarized light separator (6) reflection is received, the rear connection of the annular housing (2) is used for thermally conductive heat sink (1), institute
The front for stating annular housing (2) is emitted the polarised light that the polarized light separator (6) penetrates, the polarized light separator (6)
The optics guiding device (3) is arranged in front.
2. a kind of liquid crystal projection apparatus that screen temperature is effectively reduced according to claim 1, which is characterized in that the annular housing
It (2) is ferrous metal cavity.
3. a kind of liquid crystal projection apparatus that screen temperature is effectively reduced according to claim 1, which is characterized in that the polarisation separation
Device (6) is the prism of glued plated film or surface coating.
4. a kind of liquid crystal projection apparatus that screen temperature is effectively reduced according to claim 1, which is characterized in that the polarisation separation
Rotation angular compliance of the device (6) through the polaroid (8) being arranged on the angle of polarised light and the liquid crystal display (9).
5. a kind of liquid crystal projection apparatus that screen temperature is effectively reduced according to claim 1, which is characterized in that heat sink (1)
Heat pipe is connected, the heat pipe connection cooling fin is radiated by heat radiating system of whole machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221057.7A CN109917609A (en) | 2019-03-21 | 2019-03-21 | A kind of liquid crystal projection apparatus that screen temperature is effectively reduced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221057.7A CN109917609A (en) | 2019-03-21 | 2019-03-21 | A kind of liquid crystal projection apparatus that screen temperature is effectively reduced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109917609A true CN109917609A (en) | 2019-06-21 |
Family
ID=66966368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910221057.7A Pending CN109917609A (en) | 2019-03-21 | 2019-03-21 | A kind of liquid crystal projection apparatus that screen temperature is effectively reduced |
Country Status (1)
| Country | Link |
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| CN (1) | CN109917609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116841108A (en) * | 2023-07-06 | 2023-10-03 | 北京睿智航显示科技有限公司 | LCD light-transmitting component and projector composed of same |
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|---|---|---|---|---|
| JPH03174134A (en) * | 1990-10-23 | 1991-07-29 | Casio Comput Co Ltd | Display device for liquid crystal projector |
| CN2684223Y (en) * | 2003-11-18 | 2005-03-09 | 力特光电科技股份有限公司 | Polarized device for projector |
| US20050190560A1 (en) * | 2004-02-27 | 2005-09-01 | Seiko Epson Corporation | Light source device and projector |
| CN1664653A (en) * | 2004-03-03 | 2005-09-07 | 株式会社日立制作所 | Optical unit and projection-type image display apparatus using the same |
| CN1847974A (en) * | 2005-04-14 | 2006-10-18 | 三洋电机株式会社 | Optical member and illuminating device |
| CN1914527A (en) * | 2003-12-02 | 2007-02-14 | 3M创新有限公司 | Sony ericsson mobile comm ab |
| CN201259595Y (en) * | 2008-08-21 | 2009-06-17 | 杭州三花科特光电有限公司 | Temperature reduction device for LCD projector liquid crystal screen |
| CN101527982A (en) * | 2008-03-03 | 2009-09-09 | 红蝶科技(深圳)有限公司 | LED chip and LD chip hybrid-package light source and liquid crystal projecting apparatus |
| CN201417357Y (en) * | 2009-06-19 | 2010-03-03 | 余卫华 | Single-chip type color liquid crystal projection device |
| CN209514284U (en) * | 2019-03-21 | 2019-10-18 | 屏丽科技成都有限责任公司 | A kind of liquid crystal projection apparatus that screen temperature is effectively reduced |
-
2019
- 2019-03-21 CN CN201910221057.7A patent/CN109917609A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03174134A (en) * | 1990-10-23 | 1991-07-29 | Casio Comput Co Ltd | Display device for liquid crystal projector |
| CN2684223Y (en) * | 2003-11-18 | 2005-03-09 | 力特光电科技股份有限公司 | Polarized device for projector |
| CN1914527A (en) * | 2003-12-02 | 2007-02-14 | 3M创新有限公司 | Sony ericsson mobile comm ab |
| US20050190560A1 (en) * | 2004-02-27 | 2005-09-01 | Seiko Epson Corporation | Light source device and projector |
| CN1664653A (en) * | 2004-03-03 | 2005-09-07 | 株式会社日立制作所 | Optical unit and projection-type image display apparatus using the same |
| CN1847974A (en) * | 2005-04-14 | 2006-10-18 | 三洋电机株式会社 | Optical member and illuminating device |
| CN101527982A (en) * | 2008-03-03 | 2009-09-09 | 红蝶科技(深圳)有限公司 | LED chip and LD chip hybrid-package light source and liquid crystal projecting apparatus |
| CN201259595Y (en) * | 2008-08-21 | 2009-06-17 | 杭州三花科特光电有限公司 | Temperature reduction device for LCD projector liquid crystal screen |
| CN201417357Y (en) * | 2009-06-19 | 2010-03-03 | 余卫华 | Single-chip type color liquid crystal projection device |
| CN209514284U (en) * | 2019-03-21 | 2019-10-18 | 屏丽科技成都有限责任公司 | A kind of liquid crystal projection apparatus that screen temperature is effectively reduced |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116841108A (en) * | 2023-07-06 | 2023-10-03 | 北京睿智航显示科技有限公司 | LCD light-transmitting component and projector composed of same |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20220818 Address after: 610000 building 2-1, Tianfu Haichuang Park, No. 619, Jicui Road, Xinglong Street, Tianfu new area, Chengdu, Sichuan Applicant after: Chengdu Jiutian Huaxin Technology Co., Ltd. Address before: 2nd Floor, Building 10, Area A, Tianfu Jingrong Center, Science City, Tianfu New District, Chengdu, China (Sichuan) Pilot Free Trade Zone, Chengdu 610000 Applicant before: LUXNPRO CHENGDU ELECTRONICS CO.,LTD. |