CN210155504U - Teaching projecting apparatus protection device that prevents dust - Google Patents
Teaching projecting apparatus protection device that prevents dust Download PDFInfo
- Publication number
- CN210155504U CN210155504U CN201920685551.4U CN201920685551U CN210155504U CN 210155504 U CN210155504 U CN 210155504U CN 201920685551 U CN201920685551 U CN 201920685551U CN 210155504 U CN210155504 U CN 210155504U
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- heat dissipation
- electric
- dustproof
- teaching
- dustproof protection
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Abstract
The utility model relates to a dustproof protection device of a teaching projector, which comprises a dustproof protection box and a fixed bracket; the dustproof protection box is a rectangular box body, and the teaching projector is arranged in the box body; the top wall and 4 side walls of the dustproof protection box are respectively provided with a heat dissipation window, wherein the heat dissipation window of the top wall is provided with an electric shutter heat dissipation skylight, and the heat dissipation windows of the 4 side walls are respectively provided with an electric lifting baffle; the fixed bolster is fixed at the top of dustproof guard box, and its upper end is used for with classroom ceiling fixed connection, and the lower extreme communicates with the inside of dustproof guard box, and the fixed bolster is hollow tube structure, and the power cord of teaching projecting apparatus, grid driving motor electric louver heat dissipation skylight and electric lift baffle is all drawn forth through the fixed bolster. The utility model discloses the structure is exquisite, and convenient operation can reach well dispel the heat, can prevent dust effectively again to the vibrations of reducible teaching projecting apparatus, thereby guarantee that equipment provides clear stable projection picture and be favorable to prolonging the life of equipment.
Description
Technical Field
The utility model relates to an equipment protector especially relates to a teaching projecting apparatus protection device that prevents dust.
Background
The projector is a device capable of projecting images or videos onto a curtain, and can be connected with a computer, a VCD or DV and other devices through different interfaces to play corresponding video signals. The resolution of teaching projectors has reached 1024 x 768 or 800 x 600, i.e. each pixel has a side length of only 0.02mm, smaller than the diameter of the dust particles. The LCD panel of the teaching projector is generally provided with a special fan for sufficient heat dissipation, the LCD panel is supplied with air at a flow rate of tens of liters of air per minute for cooling, and the high-speed air flow passing through the dust filter screen may also carry tiny dust particles, which rub against each other to generate static electricity and are adsorbed in the heat dissipation system, which affects the projection picture.
In addition, strong vibration can cause the displacement of the liquid crystal plates, influence the convergence of three LCDs during projection, cause the phenomenon of non-coincidence of RGB colors, and cause the deformation or damage of lenses and reflectors in an optical system to influence the image projection effect, so that dust prevention, heat dissipation and shock resistance are very important in the use environment of the projector.
When the teaching projector is started to work, the fan rotates to cause vibration to a certain degree, so that the displacement of the liquid crystal display affects the definition of a picture. The heat dissipation window has been seted up usually to teaching projecting apparatus's casing outside, when not starting the machine at ordinary times and using, because the heat dissipation window still is in the open mode, lead to teaching projecting apparatus to expose for a long time in the air for inside dust or other impurity get into teaching projecting apparatus through the heat dissipation window very easily, not only influence teaching projecting apparatus's radiating effect, still can influence projection picture quality, more even person can cause teaching projecting apparatus internal circuit's corruption, influence its life.
Disclosure of Invention
The utility model provides a teaching projecting apparatus protection device that prevents dust, its structure is exquisite, and convenient operation can reach well dispel the heat, can prevent dust effectively again to reducible teaching projecting apparatus's vibrations, thereby guarantee that equipment provides clear stable projection picture and be favorable to prolonging the life of equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a dustproof protection device for a teaching projector comprises a dustproof protection box and a fixed bracket; the dustproof protection box is a rectangular box body, and the teaching projector is arranged in the box body; the top wall and 4 side walls of the dustproof protection box are respectively provided with a heat dissipation window, wherein the heat dissipation window of the top wall is provided with an electric shutter heat dissipation skylight, and the heat dissipation windows of the 4 side walls are respectively provided with an electric lifting baffle; the fixed bolster is fixed at the top of dustproof guard box, and its upper end is used for with classroom ceiling fixed connection, and the lower extreme communicates with the inside of dustproof guard box, and the fixed bolster is hollow tube structure, and the power cord of teaching projecting apparatus, grid driving motor electric louver heat dissipation skylight and electric lift baffle is all drawn forth through the fixed bolster.
The electric louver heat dissipation skylight is composed of blades, a connecting rod mechanism and an electric actuator, a rectangular window is formed in the top wall of the dustproof protection box, the blades are arranged in the rectangular window in parallel, the middle of each blade is rotatably connected with two corresponding sides of the rectangular window through a center shaft, one end of the center shaft is connected with the electric actuator fixed on the outer side of the dustproof protection box through a crank connecting rod mechanism, and under the driving of the electric actuator, the connecting rod drives the blades to rotate around the axis of the center shaft through a crank, so that the electric louver heat dissipation skylight is opened or closed.
And rubber sealing strips are respectively arranged at the edges of the rectangular window and the edges of the blades.
The electric lifting baffle consists of a rotating shaft, a bevel gear, belt wheels, a belt, a bearing seat and a baffle, wherein the rotating shaft is arranged on the inner side of the top of the dustproof protection box in a through manner and is connected with the side wall of the dustproof protection box through the bearing seat; two ends of the rotating shaft are respectively provided with a bevel gear, and the bevel gears on the corresponding sides of the adjacent 2 groups of electric lifting baffles are in meshing transmission with each other; the lifting driving mechanism consists of a lifting motor, a worm wheel and a worm, the lifting motor is arranged in the fixed support, an output shaft of the lifting motor is connected with the worm, and the worm is in meshing transmission with the worm wheel sleeved on the corresponding rotating shaft; under the drive of a lifting motor, a transverse shaft provided with a worm wheel drives a corresponding belt wheel to rotate, and drives a baffle to lift through a belt; the transverse shafts provided with the worm gears drive the transverse shafts in the adjacent 2 groups of electric lifting baffles to rotate through the bevel gears at the two ends, and the transverse shafts in the adjacent 2 groups of electric lifting baffles drive the transverse shafts in the rest 1 group of electric lifting baffles to rotate through the corresponding bevel gears, so that the synchronous lifting of the baffles in the 4 groups of electric lifting baffles is finally realized.
The bottom plate of the dustproof protection box is provided with a plurality of damping felts, the damping felts are fixedly bonded with the bottom plate, and the teaching projector is horizontally placed on the damping felts.
The heat dissipation windows on the 4 side walls are respectively provided with a slideway corresponding to the two sides of the baffle plate, and the baffle plate slides up and down along the slideways; a sealing rubber strip is embedded in the slideway.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the teaching projector is placed in the dustproof protection box, and the dustproof protection box is in a fully closed state when the teaching projector is not used, so that the dustproof protection box can play a good dustproof protection role on the teaching projector;
2) the dustproof protection box is arranged below the ceiling of the classroom through a fixed support, the teaching projector can be taken out at any time, and the maintenance is convenient; the fixed bracket has a cable leading-out function at the same time, the wiring is convenient, and the motor and the worm in the lifting driving mechanism are arranged in the fixed bracket, so that the whole structure is beautiful and elegant;
4) an electric louver heat-dissipation skylight is arranged at the top of the dustproof protection box, so that the dustproof protection box can be conveniently opened and closed, and the angle can be adjusted according to needs;
5) the side wall of the dustproof protection box adopts an electric lifting baffle, the baffle can be lifted synchronously, all four sides of the teaching projector are exposed, the heat dissipation area is large, the heat dissipation effect is good, and the normal use of the teaching projector is not influenced;
6) establish the shock attenuation felt between the bottom plate of teaching projecting apparatus and dustproof protection case, can effectively reduce the vibrations of teaching projecting apparatus during operation, improve the stability that the teaching projecting apparatus used.
Drawings
Fig. 1 is the utility model relates to a teaching projecting apparatus protection device that prevents dust's spatial structure schematic diagram.
Fig. 2 is a teaching projector dustproof protection device's user state schematic diagram.
Fig. 3 is a schematic structural view of the electric louver heat dissipation skylight of the present invention.
Fig. 4 is a view from direction a in fig. 3.
Fig. 5 is a view from direction B of fig. 3 (the power louver heat dissipation louver is in a closed state).
Fig. 6 is a second view from B direction in fig. 3 (the electric louver heat dissipation louver is in an open state).
Fig. 7 is a schematic structural view of the electric lifting baffle of the present invention.
Fig. 8 is a schematic view of the position of the damping blanket of the present invention.
In the figure: 1. top wall 2, blade 3, side wall 4, baffle 5, fixed support 6, teaching projector 7, lifting motor 8, worm 9, worm wheel 10, rotating shaft 11, bearing seat 12, belt wheel 13, belt 14, bevel gear 15, slideway 16, damping felt 17, electric actuator 18, connecting rod 19, crank 20, middle shaft
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the utility model relates to a dust-proof protection device for teaching projectors, which comprises a dust-proof protection box and a fixed bracket 5; the dustproof protection box is a rectangular box body, and the teaching projector 6 is arranged in the box body; the top wall 1 and 4 side walls 3 of the dustproof protection box are respectively provided with a heat dissipation window, wherein the heat dissipation window of the top wall 1 is provided with an electric shutter heat dissipation skylight, and the heat dissipation windows of the 4 side walls 3 are respectively provided with an electric lifting baffle; the fixed bolster 5 is fixed at the top of dustproof guard box, and its upper end is used for with classroom ceiling fixed connection, and the lower extreme communicates with the inside of dustproof guard box, and fixed bolster 5 is hollow tube structure, and the power cord of teaching projecting apparatus 6, electronic tripe heat dissipation skylight and electronic lift baffle all draws forth through fixed bolster 5.
As shown in fig. 3-6, the electric louver heat dissipation skylight is composed of blades 2, a link mechanism and an electric actuator 17, a rectangular window is formed in a top wall 1 of a dustproof protection box, the blades 2 are arranged in the rectangular window in parallel, the middle part of each blade 2 is rotatably connected with two corresponding sides of the rectangular window through a central shaft 20, one end of the central shaft 20 is connected with the electric actuator 17 fixed on the outer side of the dustproof protection box through a crank link mechanism, and under the driving of the electric actuator 17, the link 18 drives the blades 2 to rotate around the axis of the central shaft 20 through a crank 19, so that the opening or closing of the electric louver heat dissipation skylight is realized.
And rubber sealing strips are respectively arranged at the edges of the rectangular window and the edges of the blades 2.
As shown in fig. 7, the electric lifting baffle plate is composed of a rotating shaft 10, a bevel gear 14, a belt wheel 12, a belt 13, a bearing seat 11 and a baffle plate 4, wherein the rotating shaft 10 is arranged on the inner side of the top of the dustproof protection box in a through manner and is connected with the side wall 3 of the dustproof protection box through the bearing seat 11, the belt wheel 12 is arranged on two sides of the rotating shaft 10, and the belt wheel 12 is connected with the baffle plate 4 through the belt 13; two ends of the rotating shaft 10 are respectively provided with a bevel gear 14, and the bevel gears 14 on the corresponding sides of the adjacent 2 groups of electric lifting baffles are in meshing transmission with each other; the group of electric lifting baffles close to the fixed support 5 is provided with a lifting driving mechanism, the lifting driving mechanism consists of a lifting motor 7, a worm wheel 9 and a worm 8, the lifting motor 7 is arranged in the fixed support 5, an output shaft of the lifting motor 7 is connected with the worm 8, and the worm 8 is in meshing transmission with the worm wheel 9 sleeved on the corresponding rotating shaft 10; under the drive of the lifting motor 7, a transverse shaft 10 provided with a worm wheel 9 drives a corresponding belt wheel 12 to rotate, and drives the baffle 4 to lift through a belt 13; the transverse shafts 10 provided with the worm gears 9 simultaneously drive the transverse shafts 10 of the adjacent 2 groups of electric lifting baffles to rotate through the bevel gears 14 at the two ends, and the transverse shafts 10 of the adjacent 2 groups of electric lifting baffles drive the transverse shafts 10 of the rest 1 group of electric lifting baffles to rotate through the corresponding bevel gears 14, so that the baffles 4 of the 4 groups of electric lifting baffles are lifted synchronously.
As shown in fig. 8, a plurality of shock-absorbing felts 16 are arranged on the bottom plate of the dust-proof protection box, the shock-absorbing felts 16 are bonded and fixed with the bottom plate, and the teaching projector 6 is horizontally placed on the shock-absorbing felts 16.
The heat dissipation windows of the 4 side walls 3 are respectively provided with a slideway 15 corresponding to the two sides of the baffle 4, and the baffle 4 slides up and down along the slideways 15; the slide way 15 is embedded with a sealing rubber strip.
A teaching projecting apparatus protection device that prevents dust will impart knowledge to students projecting apparatus 6 and place on the bottom plate of dustproof guard box, and the top rear end of dustproof guard box is passed through fixed bolster 5 and classroom ceiling fixed connection, establishes electronic tripe heat dissipation windowing on the roof 1. The side wall 3 that is located the dustproof protection case rear side is equipped with the lift actuating mechanism of electric lift baffle, and the electric lift baffle is equipped with respectively to the interior top of 4 lateral walls 3, drives 4 baffles 4 in the electric lift baffle of group through a lift actuating mechanism simultaneously and reciprocates. The upper part of the fixed support 5 is provided with a cable outlet, and a cable led out from the inside of the fixed support 5 is connected to a power supply through a classroom ceiling wiring.
Teaching projecting apparatus dustproof protection device's theory of operation as follows: teaching projecting apparatus 6 is placed in dustproof guard box, and before teaching projecting apparatus 6 work, start elevator motor 7, fall 4 baffles in the electric lift baffle of 4 groups, make teaching projecting apparatus 6 heat dissipation window all around open, adjust the rotation angle of each blade 2 in the electric shutter heat dissipation windowing as required simultaneously, make it be in the open mode. The lifting motor 7 and the electric actuator 17 can be connected with a remote controller to realize remote control operation.
After the lifting motor 7 is started, the corresponding transverse shaft 10 is driven to rotate through worm and worm gear transmission, the transverse shaft 10 is supported by the corresponding bearing seat 11, the corresponding belt wheel 12 and the corresponding bevel gear 14 synchronously rotate when the transverse shaft 10 rotates, and the corresponding baffle 4 is driven to descend by downward release of the corresponding belt 13 wound on the corresponding belt wheel 12; when the transverse shaft 10 provided with the worm wheel 9 rotates, the bevel gears 14 drive the transverse shafts 10 on the adjacent 2 side walls 3 to rotate, and then the bevel gears 14 on the transverse shafts 10 on the adjacent 2 side walls drive the transverse shafts on the opposite side walls to rotate, so that the synchronous lifting of the side baffles 4 is realized.
After the electric actuator 17 is started, the connecting rod 18 and the crank 19 connected with the central shaft 20 of each blade 2 drive each blade 2 to rotate around the central shaft, so that the blade 2 and the top wall 1 form a certain angle, and a heat dissipation skylight at the top is opened. The electric actuator 17 acts in the opposite direction, i.e. the blades 2 are rotated in a direction parallel to the top wall 1, thereby closing the top heat dissipation louver.
After the heat dissipation skylight of the top wall 1 and the side wall 3 are completely closed, dust can be prevented from entering. Establish the shock attenuation felt 16 between the bottom of teaching projecting apparatus 6 and the bottom plate of dustproof guard box, can reduce the vibrations that teaching projecting apparatus 6 arouses at the during operation, adopt the bonding fixed between the bottom plate of shock attenuation felt 16 and dustproof guard box.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.
Claims (6)
1. A dustproof protection device for a teaching projector is characterized by comprising a dustproof protection box and a fixed bracket; the dustproof protection box is a rectangular box body, and the teaching projector is arranged in the box body; the top wall and 4 side walls of the dustproof protection box are respectively provided with a heat dissipation window, wherein the heat dissipation window of the top wall is provided with an electric shutter heat dissipation skylight, and the heat dissipation windows of the 4 side walls are respectively provided with an electric lifting baffle; the fixed bolster is fixed at the top of dustproof guard box, and its upper end is used for with classroom ceiling fixed connection, and the lower extreme communicates with the inside of dustproof guard box, and the fixed bolster is hollow tube structure, and the power cord of teaching projecting apparatus, grid driving motor electric louver heat dissipation skylight and electric lift baffle is all drawn forth through the fixed bolster.
2. The dustproof protection device for the teaching projector as claimed in claim 1, wherein the electric louver heat dissipation skylight is composed of blades, a link mechanism and an electric actuator, a rectangular window is formed in the top wall of the dustproof protection box, a plurality of blades are arranged in parallel in the rectangular window, the middle of each blade is rotatably connected with two corresponding sides of the rectangular window through a central shaft, one end of the central shaft is connected with the electric actuator fixed on the outer side of the dustproof protection box through a crank link mechanism, and the connecting rod drives the blades to rotate around the axis of the central shaft through a crank under the driving of the electric actuator, so that the opening or closing of the electric louver heat dissipation skylight is realized.
3. The dust-proof protection device for teaching projectors of claim 2, wherein the edges of the rectangular window and the edges of the blades are respectively provided with a rubber sealing strip.
4. The dust-proof protection device for the teaching projector as claimed in claim 1, wherein the electric lifting baffle is composed of a rotating shaft, a bevel gear, belt wheels, a belt, a bearing seat and a baffle, the rotating shaft is arranged at the inner side of the top of the dust-proof protection box in a full-length manner and is connected with the side wall of the dust-proof protection box through the bearing seat, the belt wheels are arranged at two sides of the rotating shaft, and the belt wheels are connected with the baffle through the belt; two ends of the rotating shaft are respectively provided with a bevel gear, and the bevel gears on the corresponding sides of the adjacent 2 groups of electric lifting baffles are in meshing transmission with each other; the lifting driving mechanism consists of a lifting motor, a worm wheel and a worm, the lifting motor is arranged in the fixed support, an output shaft of the lifting motor is connected with the worm, and the worm is in meshing transmission with the worm wheel sleeved on the corresponding rotating shaft; under the drive of a lifting motor, a transverse shaft provided with a worm wheel drives a corresponding belt wheel to rotate, and drives a baffle to lift through a belt; the transverse shafts provided with the worm gears drive the transverse shafts in the adjacent 2 groups of electric lifting baffles to rotate through the bevel gears at the two ends, and the transverse shafts in the adjacent 2 groups of electric lifting baffles drive the transverse shafts in the rest 1 group of electric lifting baffles to rotate through the corresponding bevel gears, so that the synchronous lifting of the baffles in the 4 groups of electric lifting baffles is finally realized.
5. The dustproof protection device for the teaching projector as claimed in claim 1, wherein a plurality of damping felts are arranged on a bottom plate of the dustproof protection box, the damping felts are fixedly bonded with the bottom plate, and the teaching projector is horizontally placed on the damping felts.
6. The dustproof protection device for the teaching projector as claimed in claim 1, wherein the heat dissipation windows of the 4 side walls are respectively provided with a slideway corresponding to two sides of the baffle plate, and the baffle plate slides up and down along the slideways; a sealing rubber strip is embedded in the slideway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920685551.4U CN210155504U (en) | 2019-05-14 | 2019-05-14 | Teaching projecting apparatus protection device that prevents dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920685551.4U CN210155504U (en) | 2019-05-14 | 2019-05-14 | Teaching projecting apparatus protection device that prevents dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210155504U true CN210155504U (en) | 2020-03-17 |
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ID=69759054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920685551.4U Expired - Fee Related CN210155504U (en) | 2019-05-14 | 2019-05-14 | Teaching projecting apparatus protection device that prevents dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210155504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706902A (en) * | 2020-06-29 | 2020-09-25 | 广州易鑫建筑工程有限公司 | Warm logical energy-saving equipment for building |
-
2019
- 2019-05-14 CN CN201920685551.4U patent/CN210155504U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706902A (en) * | 2020-06-29 | 2020-09-25 | 广州易鑫建筑工程有限公司 | Warm logical energy-saving equipment for building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 |