CN200983636Y - An improved dustproof ultra-thin projection TV - Google Patents
An improved dustproof ultra-thin projection TV Download PDFInfo
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- CN200983636Y CN200983636Y CN 200620039961 CN200620039961U CN200983636Y CN 200983636 Y CN200983636 Y CN 200983636Y CN 200620039961 CN200620039961 CN 200620039961 CN 200620039961 U CN200620039961 U CN 200620039961U CN 200983636 Y CN200983636 Y CN 200983636Y
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Abstract
The utility model relates to a modified ultra-thin dustproof projection television, which comprises a body frame, a screen, a projector, a small reflector and a big reflector, wherein the projector is a dustproof projector, the small reflector is perpendicularly set beneath the screen inside the body frame, and the big reflector is perpendicularly set in the back portion inside the body frame and the projector outputs an optical signal obliquely or eccentrically projecting on the small reflector and then the big reflector delivers the reflection to the screen. The utility model compared to the prior technique is characterized in that a light source part which generates more heat and an optical part which generates less heat are separately arranged and the light source part is separately chilled down by an isolating box, which greatly reduces the intrusion content of the harmful dust in the projection television, ensures the characteristics of the optical apparatus, makes the image quality of the projection television more stable and prolongs the service span of the projection television.
Description
Technical field
The utility model relates to television set, relates in particular to a kind of modified model dust-prevention ultra-thin back projection TV.
Background technology
Traditional liquid crystal rear-projection TV, comprise transmission-type liquid crystal rear-projection TV (being the LCD rear-projection TV) and reflective liquid crystal rear-projection TV (being the LCOS rear-projection TV), generally comprise lamp optical system, coloured light split-optics, first to the 3rd electro-optical device (its center part is the composite set of liquid crystal light valve and polarizer, and liquid crystal light valve comprises transmissive liquid crystal light valve LCD or reflection-type liquid crystal light valve LCOS device), coloured light synthesizer, projector optical apparatus and screen.In the liquid crystal rear-projection TV, first to the 3rd electro-optical device is respectively successively by first to the 3rd coloured light, generally speaking, first to the 3rd coloured light is respectively red, green, blue or indigo plant, green, red trichromatism light, wherein the first and the 3rd coloured light penetrates and projects on the screen by projecting optical device from the coloured light synthesizer with the S polarization state, and second coloured light penetrates and projects on the screen by projecting optical device from the coloured light synthesizer with the P polarization state.
From a structural point, existing rear-projection TV comprises that casing, screen, projector (comprise the projection-type liquid crystal projector, reflecting liquid crystal projector and DLP projector), small reflector, large reflective mirror, screen is located at the front of casing, projector, small reflector, large reflective mirror are located in the casing, wherein, small reflector tiltedly is located at the screen below, and large reflective mirror tiltedly is located at the top; From operation principle, the light signal that projector sends is delivered directly to small reflector, and projects on the screen after the reflection by large reflective mirror.Yet there is a fatal defective in this existing rear-projection TV, and Here it is, and thickness is too thick, and floor space is bigger, thereby influences attractive in appearancely, also influences the user and uses; In addition, because the large reflective mirror area is bigger, and thickness has only 2～3mm, and it tiltedly is put in the casing top, is easy to generate distortion, causes the image bending of screen, and effect is watched in influence.
In addition, projector can produce a large amount of heat in the course of the work, heat is mainly derived from bulb, and the energy of bulb is except that a part becomes luminous energy, and major part is distributed in projector with the form of heat energy, simultaneously, the optical element in the photo engine also can absorb a part of impervious light and generate heat.These heats such as untimely leaving can have a strong impact on the operate as normal and the useful life of projector.Therefore in projector, all be provided with cooling mechanism, be used for the heat that the course of work produces is in time left, this cooling mechanism generally comprises many fans that vary in size and corresponding wind channels, be used for sucking force air at work from the outside and ventilate, heat is in time discharged from air outlet.But when ventilating, also dust in air can be brought into, these dusts are as sticking to the particularly liquid crystal board of projector or rear-projection TV big of optical element, on the small reflector, can influence the optical property of optical element, in order to reduce effect of dust as far as possible, prior art installs the screen pack of being made by silk screen or sponge often additional on air inlet, add screen pack and can produce certain air intake resistance on the one hand, also can stop up after having grown service time on the other hand, in case stop up, can the use of projector or rear-projection TV be produced serious influence, therefore screen pack must regularly clean, cleaned once in general per 1～2 month, this brings very big trouble to the user.
Summary of the invention
The purpose of this utility model is exactly the modified model dust-prevention ultra-thin back projection TV that a kind of compact conformation, stable image quality are provided for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of modified model dust-prevention ultra-thin back projection TV, comprise casing, screen, projector, small reflector, large reflective mirror, described screen is located at the front of casing, described projector, small reflector, large reflective mirror is located in the casing, the light signal that described projector sends passes through small reflector respectively, project on the screen after the reflection of large reflective mirror, it is characterized in that: described projector is dustproof projector, described small reflector vertically is located at the screen below in the casing, described large reflective mirror vertically is located at the back side in the casing, the light signal that described projector sends tiltedly throws or off-centre is projected on the small reflector, and projects on the screen after the reflection of large reflective mirror.
Described dustproof projector is a dustproof tri-lens projector.
Described dustproof tri-lens projector comprises base plate and is arranged on photo engine lighting mechanism, photo engine imaging mechanism, circuit board, light source, apparatus for lighting up and power supply on this base plate, aerofoil fan, many vortex flow fans and heat dissipation wind channel, also comprise the one fen cell that is arranged on the base plate, this minute, cell each parts that will be arranged on the base plate were separated into two heat-sink units, a heat-sink unit is the photo engine heat-sink unit, and another heat-sink unit is the light source heat radiation unit; Described photo engine heat-sink unit comprises photo engine lighting mechanism, photo engine imaging mechanism, circuit board, apparatus for lighting up and power supply, many vortex flow fans and heat dissipation wind channel, described light source heat radiation unit comprises light source and aerofoil fan, and this heat-sink unit is located in the branch cell; Wherein, described photo engine heat-sink unit and rear-projection TV inner space form closed system, by vortex flow fan and the cooling of heat dissipation wind channel inner loop, described light source heat radiation unit is provided with air inlet and air outlet, this air inlet and air outlet are located on the rear-projection TV housing, are ventilated by aerofoil fan and cool off.
Described circuit board, apparatus for lighting up and power supply also can be arranged on the light source heat radiation unit.
Cell can adopt the good material of heat-proof quality in described minute, perhaps made the double thermal insulation layer.
When described off-centre was throwed, the relative optical center of the display device in projector line is eccentric to be provided with.
Described display device comprises the liquid crystal board of transmission-type liquid crystal projector or reflecting liquid crystal projector, perhaps the display device of DLP projector.
During described oblique projection, the image that is incident upon on the screen is trapezoidal, carry out keystone to image, so that display image is the square configuration of screen.
Described large reflective mirror vertically is located at the top, the back side in the casing.
Described dustproof projector is located at bottom of shell.
Compared with prior art, the relative less opticator with caloric value of the Lights section that the utility model is bigger with caloric value in the rear-projection TV is separated, and adopt the separation packing list solely light source to be cooled off, greatly reduce the intrusion degree of harmful dust in the rear-projection TV, guaranteed the serviceability of optics, make that the picture quality of rear-projection TV is more stable, prolonged the useful life of rear-projection TV simultaneously.
Description of drawings
Fig. 1 is the structural representation in oblique when projection of the present utility model;
Structural representation when Fig. 2 is eccentric projection of the present utility model;
Fig. 3 is the structural representation of the dustproof projector of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, a kind of modified model dust-prevention ultra-thin back projection TV, comprise casing 1, screen 2, projector 3, small reflector 4, large reflective mirror 5, described screen 2 is located at the front of casing 1, described projector 3 is located at casing 1 bottom, and described small reflector 4 vertically is located at the screen below in the casing, and described large reflective mirror 5 vertically is located at the top, the back side in the casing, the light signal that described projector 3 sends is tiltedly thrown to small reflector 4, and through projecting on the screen 2 after the reflection of large reflective mirror 5.Present embodiment adopts oblique mode of delivery, and the image of transmission on screen is trapezoidal, carry out keystone to image, so that display image is the square configuration of screen.Present embodiment is according to the angle lens difference, and its thickness can be accomplished below the 23cm.
As shown in Figure 3, present embodiment projector is a dustproof tri-lens projector, this dustproof tri-lens projector comprises base plate 31 and the photo engine lighting mechanism 32 that is arranged on this base plate 31, photo engine imaging mechanism 33, circuit board 34, light source 35, apparatus for lighting up and power supply 36, aerofoil fan 37, many vortex flow fans 38 and heat dissipation wind channel 39, also comprise the one fen cell 30 that is arranged on the base plate 31, this minute, cell 30 each parts that will be arranged on the base plate 31 were separated into two heat-sink units, a heat-sink unit is the photo engine heat-sink unit, and another heat-sink unit is the light source heat radiation unit; Described photo engine heat-sink unit comprises photo engine lighting mechanism 32, photo engine imaging mechanism 33, circuit board 34, apparatus for lighting up and power supply 36, many vortex flow fans 38 and heat dissipation wind channel 39, described light source heat radiation unit comprises light source 35 and aerofoil fan 37, and this heat-sink unit is located in the branch cell 30; Wherein, described photo engine heat-sink unit and rear-projection TV inner space form closed system, by vortex flow fan 38 and the cooling of heat dissipation wind channel 39 inner loop, described light source heat radiation unit is provided with air inlet and air outlet (figure does not show), this air inlet and air outlet are located on the rear-projection TV housing 1, are ventilated by aerofoil fan 37 and cool off.
As shown in Figure 2, a kind of modified model dust-prevention ultra-thin back projection TV, comprise casing 1, screen 2, projector 3, small reflector 4, large reflective mirror 5, described screen 2 is located at the front of casing 1, described projector 3 is located at casing 1 bottom, described small reflector 4 vertically is located at the screen below in the casing, described large reflective mirror 5 vertically is located at the top, the back side in the casing, the light signal off-centre that described projector 3 sends is projected on the small reflector 4, and through projecting on the screen 2 after the reflection of large reflective mirror 5.Present embodiment adopts eccentric mode of delivery, and the relative optical center of the liquid crystal board in projector line is eccentric to be provided with.Present embodiment is according to the angle lens difference, and its thickness can be accomplished below the 23cm.
As shown in Figure 3, present embodiment projector is a dustproof tri-lens projector, and the structure of this dustproof tri-lens projector is identical with embodiment 1.
As shown in Figure 1, a kind of modified model dust-prevention ultra-thin back projection TV, comprise casing 1, screen 2, projector 3, small reflector 4, large reflective mirror 5, described screen 2 is located at the front of casing 1, described projector 3 is located at casing 1 bottom, and described small reflector 4 vertically is located at the screen below in the casing, and described large reflective mirror 5 vertically is located at the top, the back side in the casing, the light signal that described projector 3 sends is tiltedly thrown to small reflector 4, and through projecting on the screen 2 after the reflection of large reflective mirror 5.Present embodiment adopts oblique mode of delivery, and the image of transmission on screen is trapezoidal, carry out keystone to image, so that display image is the square configuration of screen.Present embodiment is according to the angle lens difference, and its thickness can be accomplished below the 23cm.
As shown in Figure 3, present embodiment projector is a dustproof tri-lens projector, this dustproof tri-lens projector comprises base plate 31 and the photo engine lighting mechanism 32 that is arranged on this base plate 31, photo engine imaging mechanism 33, circuit board 34, light source 35, apparatus for lighting up and power supply 36, aerofoil fan 37, many vortex flow fans 38 and heat dissipation wind channel 39, also comprise the one fen cell 30 that is arranged on the base plate 31, this minute, cell 30 each parts that will be arranged on the base plate 31 were separated into two heat-sink units, a heat-sink unit is the photo engine heat-sink unit, and another heat-sink unit is the light source heat radiation unit; Described photo engine heat-sink unit comprises photo engine lighting mechanism 32, photo engine imaging mechanism 33, many vortex flow fans 38 and heat dissipation wind channel 39, described light source heat radiation unit comprises light source 35, aerofoil fan 37, circuit board 34, apparatus for lighting up and power supply 36, and this heat-sink unit is located in the branch cell 30; Wherein, described photo engine heat-sink unit and rear-projection TV inner space form closed system, by vortex flow fan 38 and the cooling of heat dissipation wind channel 39 inner loop, described light source heat radiation unit is provided with air inlet and air outlet (figure does not show), this air inlet and air outlet are located on the rear-projection TV housing 1, are ventilated by aerofoil fan 37 and cool off.
Claims (9)
1. modified model dust-prevention ultra-thin back projection TV, comprise casing, screen, projector, small reflector, large reflective mirror, described screen is located at the front of casing, described projector, small reflector, large reflective mirror is located in the casing, the light signal that described projector sends passes through small reflector respectively, project on the screen after the reflection of large reflective mirror, it is characterized in that: described projector is dustproof projector, described small reflector vertically is located at the screen below in the casing, described large reflective mirror vertically is located at the back side in the casing, the light signal that described projector sends tiltedly throws or off-centre is projected on the small reflector, and projects on the screen after the reflection of large reflective mirror.
2. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 1 is characterized in that: described dustproof projector is a dustproof tri-lens projector.
3. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 2, it is characterized in that: described dustproof tri-lens projector comprises base plate and is arranged on photo engine lighting mechanism, photo engine imaging mechanism, circuit board, light source, apparatus for lighting up and power supply on this base plate, aerofoil fan, many vortex flow fans and heat dissipation wind channel, also comprise the one fen cell that is arranged on the base plate, this minute, cell each parts that will be arranged on the base plate were separated into two heat-sink units, a heat-sink unit is the photo engine heat-sink unit, and another heat-sink unit is the light source heat radiation unit; Described photo engine heat-sink unit comprises photo engine lighting mechanism, photo engine imaging mechanism, circuit board, apparatus for lighting up and power supply, many vortex flow fans and heat dissipation wind channel, described light source heat radiation unit comprises light source and aerofoil fan, and this heat-sink unit is located in the branch cell; Wherein, described photo engine heat-sink unit and rear-projection TV inner space form closed system, by vortex flow fan and the cooling of heat dissipation wind channel inner loop, described light source heat radiation unit is provided with air inlet and air outlet, this air inlet and air outlet are located on the rear-projection TV housing, are ventilated by aerofoil fan and cool off.
4. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 3, it is characterized in that: described circuit board, apparatus for lighting up and power supply also can be arranged on the light source heat radiation unit.
5. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 3 is characterized in that: cell can adopt the good material of heat-proof quality in described minute, perhaps made the double thermal insulation layer.
6. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 1 is characterized in that: when described off-centre was throwed, the relative optical center of the display device in projector line is eccentric to be provided with.
7. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 6, it is characterized in that: described display device comprises the liquid crystal board of transmission-type liquid crystal projector or reflecting liquid crystal projector, perhaps the display device of DLP projector.
8. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 1 is characterized in that: described large reflective mirror vertically is located at the top, the back side in the casing.
9. a kind of modified model dust-prevention ultra-thin back projection TV according to claim 1 is characterized in that: described dustproof projector is located at bottom of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039961 CN200983636Y (en) | 2006-03-07 | 2006-03-07 | An improved dustproof ultra-thin projection TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039961 CN200983636Y (en) | 2006-03-07 | 2006-03-07 | An improved dustproof ultra-thin projection TV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200983636Y true CN200983636Y (en) | 2007-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039961 Expired - Fee Related CN200983636Y (en) | 2006-03-07 | 2006-03-07 | An improved dustproof ultra-thin projection TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200983636Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796645A (en) * | 2015-02-11 | 2015-07-22 | 康佳集团股份有限公司 | Laser television, as well as automatic dust-removing device and method thereof |
-
2006
- 2006-03-07 CN CN 200620039961 patent/CN200983636Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796645A (en) * | 2015-02-11 | 2015-07-22 | 康佳集团股份有限公司 | Laser television, as well as automatic dust-removing device and method thereof |
| CN104796645B (en) * | 2015-02-11 | 2017-09-19 | 康佳集团股份有限公司 | A kind of laser television and its automatic dust removing apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |