CN2904038Y - Improved projector liquid crystal cooling mechanism with liquid crystal upper air outlet silencing net - Google Patents
Improved projector liquid crystal cooling mechanism with liquid crystal upper air outlet silencing net Download PDFInfo
- Publication number
- CN2904038Y CN2904038Y CN 200620040518 CN200620040518U CN2904038Y CN 2904038 Y CN2904038 Y CN 2904038Y CN 200620040518 CN200620040518 CN 200620040518 CN 200620040518 U CN200620040518 U CN 200620040518U CN 2904038 Y CN2904038 Y CN 2904038Y
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- liquid crystal
- crystal board
- noise
- air
- heat dissipation
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- Expired - Fee Related
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Abstract
The utility model provides an improved projector liquid crystal cooling mechanism with an liquid crystal upper outlet silencing net comprising multiple radiating fans and corresponding ducts as well as silencing nets on the upper outlet of each radiating fan. The silencing net is composed of more than two layers of silk screens with different densities, which can be metal or nylon. Because the upper outlet of each radiating fan is provided with a silencing net composing of multilayer silks, the utility model--improved projector liquid crystal cooling mechanism with an liquid crystal upper outlet silencing net greatly decreases the noise arising from the upper outlet of each liquid crystal panel, thereby decreases the noise of the whole projector, and improves the usage effect of the projector.
Description
Technical field
The utility model relates to a kind of projector, relates in particular to the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on a kind of modified band liquid crystal.
Background technology
Projector is widely used in education, commerce and the family.Common projector generally comprises a housing and is arranged on the interior photo engine of housing, circuit board, apparatus for lighting up, light source and corresponding cooling mechanism.According to what of camera lens used in the photo engine, projector can be divided into single-lens projector and tri-lens projector again.Generally all be earlier the white light that light source produced to be isolated red, green, blue three coloured light in design, by three liquid crystal light valves three coloured light are modulated respectively, three coloured light after the modulation are handled with diverse ways according to different mining single-lens or the three-lens design.In single-lens projector, be with closing that color component is synthesized and by the single lens projection imaging with three coloured light.In tri-lens projector, be that three coloured light are projected to imaging on the same screen via three different camera lenses respectively.Wherein single-lens projector has the advantages that volume is little, be convenient for carrying, but its back focal length is longer, and the bore of camera lens requires bigger, and optical modules such as employed camera lens and spectroscope are very high to the requirement of quality, precision, cause cost higher.And tri-lens projector can project big picture in than short distance, and picture brightness and contrast all improve a lot than single-lens projector.
Projector in the course of the work, can produce a large amount of heat, 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, in addition, the optical element in the photo engine particularly liquid crystal 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 serviceable life of projector.Therefore in projector, all be provided with the heat radiation cooling body, comprise being mainly used in the LCD cooling down mechanism that liquid crystal is cooled off, this LCD cooling down mechanism comprises many radiator fans and corresponding wind channels, is used for the heat that liquid crystal produces is in the course of the work in time left.Cooling mechanism produces another problem again, i.e. noise when solving heat dissipation problem.At the air inlet and the air outlet of fan, can send the sharp-pointed noise of giving birth to by the miscarriage of turnover wind eddies; The vibration of fan itself also can produce noise; Also have when cooling air enters slype between liquid crystal board and the polaroid and comes out above liquid crystal board again from each liquid crystal board below, also can produce noise.The projector of prior art can take measures to eliminate the air inlet of fan and the noise that air outlet produces usually; or take measures to eliminate the noise that vibration produced of fan itself; but to the noise that air outlet produced on the liquid crystal board; often will not note; do not take measures to be eliminated; thereby the noise that can not eliminate in the projector up hill and dale to be produced, influence the work effect of projector.
Summary of the invention
The purpose of this utility model provides the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on a kind of modified band liquid crystal exactly in order to address the above problem.
The purpose of this utility model is achieved in that the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on a kind of modified band liquid crystal, be provided with the green glow liquid crystal board in the described projector, blue light liquid crystal board and ruddiness liquid crystal board, described LCD cooling down mechanism comprises the green glow liquid crystal board radiator fan that is used for cooling off respectively three liquid crystal boards, blue light liquid crystal board radiator fan and ruddiness liquid crystal board radiator fan and green glow liquid crystal board heat dissipation wind channel, blue light liquid crystal board heat dissipation wind channel and ruddiness liquid crystal board heat dissipation wind channel, the air inlet of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, the air outlet of three heat dissipation wind channels is arranged on the below of three liquid crystal boards respectively vertically upward, its spy narrows and is, also comprise the noise elimination net, described noise elimination net is arranged on the last air outlet of each liquid crystal board.
Described noise elimination net is made of the silk screen of two-layer above different densities.
In the described two-layer above silk screen, the density of each layer silk screen is respectively the 1-300 order.
Distance between described each layer silk screen is controlled at 0.2-4mm.
The projecting camera LCD cooling down mechanism of air-out noise elimination net is owing to installed the noise elimination net of being made up of multi-layer silk screen additional on the utility model modified band liquid crystal on air outlet on each liquid crystal board, effectively reduce the noise of the last air outlet place generation of each liquid crystal board, thereby reduced the noise of projector's integral body, improved the result of use of projector.
Description of drawings
Fig. 1 is the structural representation of the projecting camera LCD cooling down mechanism of air-out noise elimination net on the utility model modified band liquid crystal;
Fig. 2 is the eliminate the noise liquid crystal board of net and the structural representation of relevant optical thereof of air-out on the modified band liquid crystal in the utility model.
Embodiment
Referring to Fig. 1, the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on the utility model modified band liquid crystal, be arranged in the housing of projector, be mainly used in being installed in the cooling of dispelling the heat of green glow liquid crystal board, ruddiness liquid crystal board and blue light liquid crystal board in the housing, and to the noise that air outlet produced on the liquid crystal board processing of eliminating the noise.LCD cooling down mechanism comprises green glow liquid crystal board radiator fan 11, blue light liquid crystal board radiator fan 21 and ruddiness liquid crystal board radiator fan 31, green glow liquid crystal board heat dissipation wind channel 12, blue light liquid crystal board heat dissipation wind channel 22 and ruddiness liquid crystal board heat dissipation wind channel 32 as shown in Figure 1.The air inlet 121,221,321 of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, and the air outlet 122,222,322 of three heat dissipation wind channels is arranged on the below of three liquid crystal boards (not shown liquid crystal board) respectively vertically upward.Wherein, green glow liquid crystal board radiator fan 11 and the green glow liquid crystal board heat dissipation wind channel 12 that connects thereof are arranged on the back of green glow liquid crystal board, blue light liquid crystal board radiator fan 21 and the blue light liquid crystal board heat dissipation wind channel 22 that connects thereof are arranged on the back of blue light liquid crystal board, the two all is closely horizontal air intake, vertical air-out.And ruddiness liquid crystal board radiator fan 31 is arranged on the right of whole electro-optic modulation arrangement, the below that the ruddiness liquid crystal board heat dissipation wind channel 32 of its connection is arranged on the front of whole electro-optic modulation arrangement and passes projection lens bends towards the ruddiness liquid crystal board, remote inclination air intake, vertical air-out.Shown in Fig. 1,41 is polarization converter heat dissipation wind channel 41, and the air inlet 411 of this heat dissipation wind channel 41 links to each other with ruddiness liquid crystal board heat dissipation wind channel 32, and the air outlet 412 of this heat dissipation wind channel is towards the polarization converter (not shown).
Referring to Fig. 2, Fig. 2 is the eliminate the noise liquid crystal board of net and the structure front elevation of relevant optical thereof of air-out on the modified band liquid crystal in the utility model.Shown in the figure, 1 is liquid crystal board, and 2 is polaroid, and 3 are the noise elimination net, and 4 is color-combination prism, and 5 is projection lens.Wherein, noise elimination net 3 is made of the wire gauze and/or the nylon mesh of two-layer above different densities, and the density of each layer silk screen is respectively the 1-300 order, and the distance between each layer silk screen is controlled at 0.2-4mm.Adopt four layers of silk screen in the present embodiment, wherein the 1st layer (innermost layer) employing density is 10 purpose wire gauzes, and the 2nd layer is adopted density is 20 purpose nylon mesh, and the 3rd layer is adopted density is 15 purpose wire gauzes, and it is 30 purpose nylon mesh that outermost layer adopts density.Distance between each silk screen is controlled at 1-1.5mm.
The multi-layer silk screen of the different densities that is adopted in the projecting camera LCD cooling down mechanism of air-out noise elimination net on the utility model modified band liquid crystal, can improve the air-out eddy current at air outlet place on the liquid crystal board, play the effect that changes and disperse the frequency of air-out, thereby can effectively reduce the noise that the air outlet place produces on the liquid crystal board, play good noise elimination effect.
Claims (4)
1, the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on a kind of modified band liquid crystal, be provided with the green glow liquid crystal board in the described projector, blue light liquid crystal board and ruddiness liquid crystal board, described LCD cooling down mechanism comprises the green glow liquid crystal board radiator fan that is used for cooling off respectively three liquid crystal boards, blue light liquid crystal board radiator fan and ruddiness liquid crystal board radiator fan and green glow liquid crystal board heat dissipation wind channel, blue light liquid crystal board heat dissipation wind channel and ruddiness liquid crystal board heat dissipation wind channel, the air inlet of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, the air outlet of three heat dissipation wind channels is arranged on the below of three liquid crystal boards respectively vertically upward, it is characterized in that: also comprise the noise elimination net, described noise elimination net is arranged on the last air outlet of each liquid crystal board.
2, the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on the modified band liquid crystal as claimed in claim 1, it is characterized in that: described noise elimination net is made of the silk screen of two-layer above different densities.
3, the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on the modified band liquid crystal as claimed in claim 2, it is characterized in that: in the described two-layer above silk screen, the density of each layer silk screen is respectively the 1-300 order.
4, the projecting camera LCD cooling down mechanism that air-out is eliminated the noise and netted on the modified band liquid crystal as claimed in claim 1, it is characterized in that: the distance between described each layer silk screen is controlled at 0.2-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040518 CN2904038Y (en) | 2006-03-27 | 2006-03-27 | Improved projector liquid crystal cooling mechanism with liquid crystal upper air outlet silencing net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040518 CN2904038Y (en) | 2006-03-27 | 2006-03-27 | Improved projector liquid crystal cooling mechanism with liquid crystal upper air outlet silencing net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904038Y true CN2904038Y (en) | 2007-05-23 |
Family
ID=38079452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620040518 Expired - Fee Related CN2904038Y (en) | 2006-03-27 | 2006-03-27 | Improved projector liquid crystal cooling mechanism with liquid crystal upper air outlet silencing net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2904038Y (en) |
-
2006
- 2006-03-27 CN CN 200620040518 patent/CN2904038Y/en not_active Expired - Fee Related
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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 |