CN2909745Y - Improved dust-proof rear-projection TV. - Google Patents
Improved dust-proof rear-projection TV. Download PDFInfo
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- CN2909745Y CN2909745Y CN 200620039960 CN200620039960U CN2909745Y CN 2909745 Y CN2909745 Y CN 2909745Y CN 200620039960 CN200620039960 CN 200620039960 CN 200620039960 U CN200620039960 U CN 200620039960U CN 2909745 Y CN2909745 Y CN 2909745Y
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- projector
- heat
- back projection
- screen
- light source
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Abstract
The utility model relates to an improved dustproof back projection television, comprising a housing, a screen, a dustproof projector, a small reflector and a large reflector. The screen is arranged on the front surface of the housing. The dustproof projector, the small reflector and the large reflector are arranged in the housing. The small reflector is arranged aslant below the screen. The large reflector is arranged aslant on the top. The light signals from the dustproof projector are projected onto the small reflector and then rejected by the large reflector to the screen. In comparison with the prior art, the utility model separates the light source part in the back projection television with a high heating value from the optical part in the back projection television with a low heating value, and adopts a separation box to separately cool the light source, which largely alleviates the invasion of the harmful dust into the back projection television and ensures the service performance of the optical device, thereby making the image quality of the back projection television more stable and prolonging the service life of the back projection television.
Description
Technical field
The utility model relates to television set, relates in particular to a kind of modified model dust-prevention 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.
Projector can produce a large amount of heat in the course of the work, and heat is mainly derived from bulb, the energy of bulb is except that a part becomes luminous energy, major part is distributed in projector with the form of heat energy, and 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 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 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 are located in the casing, wherein, small reflector tiltedly is located at the screen below, large reflective mirror tiltedly is located at the top, the light signal that described projector sends is projected to small reflector, project on the screen after the large reflective mirror reflection, it is characterized in that: described projector is dustproof projector.
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.
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 of a kind of modified model dust-prevention back projection TV of the utility model;
Fig. 2 is the right view of Fig. 1;
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 and Figure 2, a kind of modified model dust-prevention back projection TV, comprise casing 1, screen 2, dustproof projector 3, small reflector 4, large reflective mirror 5, described screen 2 is located at the front of casing 1, and described dustproof projector 3, small reflector 4, large reflective mirror 5 are located in the casing 1, wherein, small reflector 4 tiltedly is located at screen 2 belows, large reflective mirror 5 tiltedly is located at the top, and the light signal that described dustproof projector 3 sends is projected to small reflector 4, projects on the screen 2 after large reflective mirror 5 reflections again.
As Fig. 2, shown in Figure 3, the dustproof projector of present embodiment 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 1 and Figure 2, a kind of modified model dust-prevention back projection TV, comprise casing 1, screen 2, dustproof projector 3, small reflector 4, large reflective mirror 5, described screen 2 is located at the front of casing 1, and described dustproof projector 3, small reflector 4, large reflective mirror 5 are located in the casing 1, wherein, small reflector 4 tiltedly is located at screen 2 belows, large reflective mirror 5 tiltedly is located at the top, and the light signal that described dustproof projector 3 sends is projected to small reflector 4, projects on the screen 2 after large reflective mirror 5 reflections again.
As Fig. 2, shown in Figure 3, the dustproof projector of present embodiment 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 (6)
1. modified model dust-prevention 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 are located in the casing, and wherein, small reflector tiltedly is located at the screen below, large reflective mirror tiltedly is located at the top, the light signal that described projector sends is projected to small reflector, projects on the screen after the large reflective mirror reflection again, it is characterized in that: described projector is dustproof projector.
2. a kind of modified model dust-prevention 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 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 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 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 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 200620039960 CN2909745Y (en) | 2006-03-07 | 2006-03-07 | Improved dust-proof rear-projection TV. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039960 CN2909745Y (en) | 2006-03-07 | 2006-03-07 | Improved dust-proof rear-projection TV. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909745Y true CN2909745Y (en) | 2007-06-06 |
Family
ID=38128954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039960 Expired - Fee Related CN2909745Y (en) | 2006-03-07 | 2006-03-07 | Improved dust-proof rear-projection TV. |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2909745Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811636A (en) * | 2015-03-18 | 2015-07-29 | 康佳集团股份有限公司 | External reflection type laser television and reflection mirror protective device thereof |
-
2006
- 2006-03-07 CN CN 200620039960 patent/CN2909745Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811636A (en) * | 2015-03-18 | 2015-07-29 | 康佳集团股份有限公司 | External reflection type laser television and reflection mirror protective device thereof |
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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 |