CN204256346U - A kind of simple projector that can reduce costs - Google Patents
A kind of simple projector that can reduce costs Download PDFInfo
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- CN204256346U CN204256346U CN201420687254.0U CN201420687254U CN204256346U CN 204256346 U CN204256346 U CN 204256346U CN 201420687254 U CN201420687254 U CN 201420687254U CN 204256346 U CN204256346 U CN 204256346U
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- housing
- liquid crystal
- crystal display
- imaging cylinder
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Abstract
The utility model discloses a kind of simple projector that can reduce costs, outside is provided with imaging cylinder, in imaging cylinder, the larger-size one end of end face is stretched into housing and is communicated with enclosure interior, one end that in imaging cylinder, face size is less is provided with camera lens, camera lens seals this termination completely, be disposed with reflector, light source, condenser, even light microscopic and liquid crystal display in housing, liquid crystal display is arranged between condenser and imaging cylinder; Drive plate, AV plate, ballast resistor, trigger, power supply and video input interface is provided with in described housing, video input interface is arranged on shell wall side, drive plate is connected with liquid crystal display, ballast resistor is connected with trigger, drive plate is connected with AV plate, AV plate is connected with video input interface, and light source, ballast resistor and drive plate are all connected with power supply.The structure of this simple projector is simple, and cost of manufacture is low, keeps in repair easy, reduces use cost, and meet teaching completely and use, the quality of projection can reach requirement.
Description
Technical field
The utility model relates to a kind of projector, especially relates to a kind of simple projector that can reduce costs.
Background technology
Projector is also known as projector, and current shadow casting technique makes rapid progress, and along with the development of science and technology, projection industry has also developed into the paramount field of a micro-throwing new technology.Projector is a kind of precise electronic product, it integrates machinery, liquid crystal or DMD, electronic circuit technology, therefore in use to be noted (for liquid crystal projector) from the following aspects: mechanical aspects, be strictly on guard against strong collision, extruding and vibrations.Because macroseism can cause the displacement of LCD panel, the convergence of three LCD during impact projection, there is the phenomenon that RGB color does not overlap, and the lens in optical system, catoptron also can produce distortion or damage, and effect diagram is as drop shadow effect, and zoom lens can make rail damage under impact, cause camera lens stuck, even camera lens breaks and cannot use.Optical system, notes the dust-proof and ventilation and heat of environment for use.The polysilicon LCD plate of current use generally only has 1.3 inches, and what have even only has 0.9 inch, and resolution has reached 1024X768 or 800X600, and that is each pixel only has 0.02mm, and dust granule enough stops it.And generally have special fan to carry out air-supply cooling with the flow of tens litres of air per minute to it because projector LCD plate fully dispels the heat, high velocity air also likely carries small dust secretly after dirt filtrating screen, they mutually rub and produce electrostatic and be adsorbed in cooling system, and this will have an impact to projected picture.Therefore, dust-proof extremely important in projector's environment for use, must absolutely no smoking, because smokeshade is more easily adsorbed in optical system.Therefore dirt filtrating screen that is frequent or periodic cleaning air inlet is wanted.Lamp source part, at present, most of projector uses metal halid lamp, and when illuminating state, bulb side voltage about 60-80V, in bulb, gaseous tension is greater than 10kg/cm, and temperature then has thousands of degree, and filament is in fritting state.Therefore, forbid to shake under open state, move projector; prevent bulb from bursting; can not at once deenergization after stopping using, machine be allowed to have dispelled the heat rear auto stop, and to be that projector is modal reprocess one of reason in the damage caused in the power-off of machine radiating state.In addition, switching on and shutting down number of times is reduced useful to bulb life.Circuit part, forbids warm swap cable, signal source and projector's power supply preferably ground connection simultaneously.This be due to be connected with signal source (as PC) when projector be different electrical power time, higher potential difference (PD) may be there is between two zero lines.When user's warm swap signal wire or other circuit, spark phenomenon can be there is between plugs and sockets, damage signal input circuit, cause serious consequence thus.In use, there is larger distance in projector between some user request signal source and projector, and all apart from signal source more than 15 meters as the projector of lifting, at this moment corresponding signal cable must extend.The signal of input projector can be caused thus to decay, and can there is the phenomenon that fuzzy hangover is even shaken in the picture projected out.This Bu Shi projector breaks down, and also can not damage machine.The best approach addressed this problem is after signal source, install a signal amplifier additional, can ensure Signal transmissions more than 20 meters and out of question.Traditional projector architecture is complicated, and cost is high, and too high for cost common teaching use, the psychology beyond everybody accepts scope.
Utility model content
It is complicated that the purpose of this utility model is to overcome above-mentioned existing projector architecture, and cost is high, too high for cost common teaching uses, psychology beyond everybody accepts the problem of scope, devise a kind of simple projector that can reduce costs, the structure of this simple projector is simple, cost of manufacture is low, keep in repair easy, reduce use cost, meet teaching completely to use, the quality of projection can reach requirement, solve existing projector architecture complicated, and cost is high, too high for cost common teaching uses, psychology beyond everybody accepts the problem of scope.
The purpose of this utility model is achieved through the following technical solutions: a kind of simple projector that can reduce costs, comprise the housing of inner hollow, described outside is provided with inner hollow and the imaging cylinder of both ends open, the profile of imaging cylinder is isosceles trapezoid body structure, in imaging cylinder, the larger-size one end of end face is stretched into housing and is communicated with enclosure interior, one end that in imaging cylinder, face size is less is provided with camera lens, camera lens seals this termination completely, reflector is disposed with in housing, light source, condenser, even light microscopic and liquid crystal display, the center of reflector, the center of light source, the center of condenser, the center of even light microscopic, the center of liquid crystal display and the center of camera lens are all arranged on the center line of imaging cylinder, liquid crystal display is arranged between condenser and imaging cylinder, light source is arranged on the center between reflector and condenser, Distance geometry light source between camera lens with liquid crystal display is equal with the distance between even light microscopic, drive plate, AV plate, ballast resistor, trigger, power supply and video input interface is provided with in described housing, video input interface is arranged on shell wall side, drive plate is connected with liquid crystal display, ballast resistor is connected with trigger, drive plate is connected with AV plate, AV plate is connected with video input interface, and light source, ballast resistor and drive plate are all connected with power supply.
The internal face of described housing is provided with several fans, fan is all through housing and ft connection, and fan is all connected with power supply, and fan is all connected with wind-guiding page, and wind-guiding page is arranged on enclosure interior.
Described even light microscopic adopts Fresnel Lenses.
In sum, the beneficial effects of the utility model are: the structure of this simple projector is simple, cost of manufacture is low, keeps in repair easy, reduces use cost, meet teaching completely to use, the quality of projection can reach requirement, solve existing projector architecture complicated, and cost is high, too high for cost common teaching uses, the psychology beyond everybody accepts the problem of scope.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark and corresponding parts title in accompanying drawing: 1-wind-guiding page; 2-ballast resistor; 3-trigger; 4-fan one; 5-drive plate; 6-video input interface; 7-AV plate; 8-camera lens; 9-imaging cylinder; 10-liquid crystal display; 11-even light microscopic; 12-fan two; 13-housing; 14-fan three; 15-power supply; 16-reflector; 17-light source; 18-condenser; 19-fan four.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited only to this.
Embodiment 1:
As shown in Figure 1, a kind of simple projector that can reduce costs, comprise the housing 13 of inner hollow, described housing 13 outer setting has inner hollow and the imaging cylinder 9 of both ends open, the profile of imaging cylinder 9 is isosceles trapezoid body structure, in imaging cylinder 9, the larger-size one end of end face is stretched into housing 13 and is communicated with housing 13 inside, one end that in imaging cylinder 9, face size is less is provided with camera lens 8, camera lens 8 seals this termination completely, reflector 16 is disposed with in housing 13, light source 17, condenser 18, even light microscopic 11 and liquid crystal display 10, the center of reflector 16, the center of light source 17, the center of condenser 18, the center of even light microscopic 11, the center of liquid crystal display 10 and the center of camera lens 8 are all arranged on the center line of imaging cylinder 9, liquid crystal display 10 is arranged between condenser 18 and imaging cylinder 9, light source 17 is arranged on the center between reflector 16 and condenser 18, Distance geometry light source 17 between camera lens 8 with liquid crystal display 10 is equal with the distance between even light microscopic 11, drive plate 5, AV plate 7, ballast resistor 2, trigger 3, power supply 15 and video input interface 6 is provided with in described housing 13, video input interface 6 is arranged on housing 13 wall, drive plate 5 is connected with liquid crystal display 10, ballast resistor 2 is connected with trigger 3, drive plate 5 is connected with AV plate 7, AV plate 7 is connected with video input interface 6, and light source 17, ballast resistor 2 and drive plate 5 are all connected with power supply 15.Display device of today, face is increasing, and CRT just need not carry, with regard to liquid crystal display, screen size rising all the way.For usually learning user, excessive screen there is no need in fact, and because the cause at visual angle, also inconvenient.But for hankering after the user of computer home theater and computer game, giant-screen is their eternal pursuit.This is because large-screen display equipment has incomparable advantage relative to small screen displays, so there is people to foretell at the on-the-spot atmosphere this respect of construction: non-projector does not belong to by the next king of display device.Although present projector's price downward constantly, a brand projector price still nearly ten thousand yuan possessing basic computer and show the 640*480 pixel required! Price is higher if 800*600 resolution! The bulb price of a liquid crystal projector reaches 1,000 yuan in addition! Be equivalent to the price of a liquid crystal display.Therefore, at least in present stage, high consumption product are still belonged to for brand projector wage-earners.Do not calculate very much in the projector use of common teaching process for high cost, therefore this simple projector of this programme is devised, the mode that fixing employing screw thread between camera lens 8 and imaging cylinder 9 is fixing fixes, both wiping can be spun down, burnt poly-fine setting can be carried out again, ballast resistor is used to as bulb provides operating voltage, volume and weight is not little, several screw to be gone up time fixing more, to note in addition not allowing it block light path system, punch with on the Fresnel Lenses both sides of electric hand drill in housing 13 and the cabinet near bulb, to install radiator fan.Light source 17 adopts bulb, under the effect of reflector 16 and condenser 18, light can be concentrated, utilize luminous energy substantially, image quality is more stable, by light source 17 being arranged on the center between reflector 16 and condenser 18, Distance geometry light source 17 between camera lens 8 with liquid crystal display 10 is set to equal with the distance between even light microscopic 11, image quality is high, the structure of this simple projector is simple, cost of manufacture is low, keep in repair easy, reduce use cost, meet teaching completely to use, the quality of projection can reach requirement, solve existing projector architecture complicated, and cost is high, too high for cost common teaching uses, psychology beyond everybody accepts the problem of scope.
The internal face of described housing 13 is provided with several fans, and fan is all through housing 13 and ft connection, and fan is all connected with power supply 15, and fan is all connected with wind-guiding page 1, and wind-guiding page 1 is arranged on housing 13 inside.This programme has installed four fans on housing 13, for aspect describes, by fan successively called after fan 1, fan 2 12, fan 3 14 and fan 4 19, each fan is provided with wind-guiding page 1(not shown in FIG.), for by the air flow guiding in housing 13, avoid producing vortex phenomenon, affect imaging effect.Because bulb power is usually at about 300W, so its thermal value is surprising, and the upper limit working temperature of liquid crystal display generally higher than 60 degree, can not carry out forced heat radiation work so be necessary in whole housing, when making, altogether four computer fans are installed in cabinet.Wherein one is extraction fan, and another two is exhaust fan, also has 4 cun of small fans specially facing to liquid crystal board blowing.
Described even light microscopic 11 preferably adopts Fresnel Lenses, also known as Fresnel lens, also claims Fresnel lens, is a kind of lens invented by French physician Augustine Fresnel.This design was applied to beacon originally, and this design can build more wide-aperture lens, is characterized in that focal length is short, and, weight more less than the material usage of general lens and volume less.Mostly be the thin slice being noted pressure by polyolefine material, also have glass to make, lens surface one side is light face, the ascending concentric circles of another side imprinting, its texture utilizes the interference of light and disturb to penetrate and require to design according to relative sensitivity and receiving angle, and the requirement of lens is very high.The lens of a slice high-quality must be any surface finish, clean mark, and its thickness becomes with purposes, and how at about 1mm, characteristic is that area is comparatively large, and thickness is thin and detect distance.Fresnel Lenses to be many times equivalent to the convex lens of infrared ray and visible ray, effect is better, but cost is more much lower than common convex lens.This programme adopts Fresnel Lenses, and imaging effect is good, and cost is low, meets people and uses.
The above; it is only preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model; every according to technology of the present utility model, method in fact to any simple modification, equivalent variations that above embodiment is done, all fall within protection domain of the present utility model.
Claims (3)
1. the simple projector that can reduce costs, it is characterized in that: the housing (13) comprising inner hollow, described housing (13) outer setting has inner hollow and the imaging cylinder (9) of both ends open, the profile of imaging cylinder (9) is isosceles trapezoid body structure, in imaging cylinder (9), the larger-size one end of end face is stretched into housing (13) and is communicated with housing (13) inside, one end that in imaging cylinder (9), face size is less is provided with camera lens (8), camera lens (8) seals this termination completely, reflector (16) is disposed with in housing (13), light source (17), condenser (18), even light microscopic (11) and liquid crystal display (10), the center of reflector (16), the center of light source (17), the center of condenser (18), the center of even light microscopic (11), the center of liquid crystal display (10) and the center of camera lens (8) are all arranged on the center line of imaging cylinder (9), liquid crystal display (10) is arranged between condenser (18) and imaging cylinder (9), light source (17) is arranged on the center between reflector (16) and condenser (18), Distance geometry light source (17) between camera lens (8) with liquid crystal display (10) is equal with the distance between even light microscopic (11), drive plate (5), AV plate (7), ballast resistor (2), trigger (3), power supply (15) and video input interface (6) is provided with in described housing (13), video input interface (6) is arranged on housing (13) wall, drive plate (5) is connected with liquid crystal display (10), ballast resistor (2) is connected with trigger (3), drive plate (5) is connected with AV plate (7), AV plate (7) is connected with video input interface (6), and light source (17), ballast resistor (2) and drive plate (5) are all connected with power supply (15).
2. a kind of simple projector that can reduce costs according to claim 1, it is characterized in that: the internal face of described housing (13) is provided with several fans, fan is all through housing (13) and ft connection, fan is all connected with power supply (15), and fan is all connected with wind-guiding page (1), and wind-guiding page (1) is arranged on housing (13) inside.
3. a kind of simple projector that can reduce costs according to claim 1, is characterized in that: described even light microscopic (11) adopts Fresnel Lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420687254.0U CN204256346U (en) | 2014-11-17 | 2014-11-17 | A kind of simple projector that can reduce costs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420687254.0U CN204256346U (en) | 2014-11-17 | 2014-11-17 | A kind of simple projector that can reduce costs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204256346U true CN204256346U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420687254.0U Expired - Fee Related CN204256346U (en) | 2014-11-17 | 2014-11-17 | A kind of simple projector that can reduce costs |
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| Country | Link |
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| CN (1) | CN204256346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330944A (en) * | 2014-11-17 | 2015-02-04 | 成都西华升腾科技有限公司 | Simple projector |
-
2014
- 2014-11-17 CN CN201420687254.0U patent/CN204256346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330944A (en) * | 2014-11-17 | 2015-02-04 | 成都西华升腾科技有限公司 | Simple projector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20151117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |