CN113744657B - LED display screen with protection anti-theft cover for large classroom - Google Patents
LED display screen with protection anti-theft cover for large classroom Download PDFInfo
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- CN113744657B CN113744657B CN202111066695.XA CN202111066695A CN113744657B CN 113744657 B CN113744657 B CN 113744657B CN 202111066695 A CN202111066695 A CN 202111066695A CN 113744657 B CN113744657 B CN 113744657B
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- shaped
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- display screen
- led display
- theft cover
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1461—Slidable card holders; Card stiffeners; Control or display means therefor
Abstract
The invention discloses an LED display screen with a protective anti-theft cover for a large classroom, which comprises a mounting frame, wherein a movable bin is arranged in the mounting frame, the movable bin is internally provided with the mounting bin, the mounting bin is internally provided with an LED display screen main body, the bottom of the movable bin is provided with an L-shaped underframe, and the inner bottom of the L-shaped underframe is provided with a U-shaped ash collecting groove. According to the invention, the U-shaped anti-theft cover is moved to the outer side of the movable bin, so that the U-shaped anti-theft cover completely shields the outer side of the movable bin, then the electric lifting rod is controlled to extend, the two groups of movable limiting plates are lifted to the same height as the inner side fixed limiting plates of the U-shaped anti-theft cover, and the two groups of movable limiting plates are positioned at the inner sides of the two groups of fixed limiting plates, so that the U-shaped anti-theft cover cannot freely move left and right, the U-shaped anti-theft cover can completely shield the LED display screen main body, damage to the LED display screen main body caused by accidental collision can be avoided, and the anti-theft capability of the LED display screen main body can be improved.
Description
Technical Field
The invention relates to the technical field of LED display screens, in particular to an LED display screen with a protective anti-theft cover for a large classroom.
Background
The LED electronic display screen integrates microelectronic technology, computer technology and information processing, has the advantages of bright color, wide dynamic range, high brightness, long service life, stable and reliable work and the like, is widely applied to commercial media, cultural performance markets, stadiums, information transmission, news release, securities trade and the like, and can meet the requirements of different environments.
The LED display screen used in the current large classroom is often used together with a teaching blackboard so that teachers can improve the teaching effect through the display screen in a writing mode, but the current LED display screen is directly exposed in the external environment and has no corresponding protection structure, so that the anti-collision and anti-theft functions of the LED display screen cannot be improved; the current LED display screen cannot automatically adjust the position so that a teacher can better write and teach by matching with the display screen on the blackboard, and the collected chalk dust cannot be automatically cleaned in the moving process of the LED display screen; meanwhile, the current LED display screen cannot automatically wipe a written blackboard, students or teachers are required to wipe slowly, flying chalk dust can cause harm to the respiratory tract of people, and the influence of the chalk dust on the teachers or students cannot be effectively reduced.
Disclosure of Invention
The invention aims to provide an LED display screen with a protective anti-theft cover for a large classroom, which solves the related problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a LED display screen with protection anti-theft cover for big classroom, includes the installing frame, the inside of installing frame is provided with movable storehouse, and the internally mounted of movable storehouse has the installing storehouse, the internally mounted of installing storehouse has the LED display screen main part, L type chassis is installed to the bottom of movable storehouse, the interior bottom of L type chassis is provided with U type album ash groove, and the both ends of U type album ash groove respectively with the bottom fixed connection at both ends in the installing frame, the ash scraping plate mutually supporting with U type album ash groove is installed to the both ends symmetry of movable storehouse bottom, the interior top and the interior bottom of installing frame are provided with adjustment subassembly jointly, the outside of movable storehouse is provided with U type anti-theft cover, the inside of movable storehouse and the inboard of U type anti-theft cover are provided with anti-theft subassembly jointly, the both ends symmetry of movable storehouse is provided with scrapes grey subassembly, auxiliary blackboard is installed in the outside of U type anti-theft cover, control panel is installed to the bottom of installing frame one end, control panel passes through the wire and is connected with LED display screen main part electricity.
Preferably, the anti-theft component comprises a movable limiting plate, slots, strip-shaped through holes, electric lifting rods, inserting blocks, anti-falling sliding grooves and fixed limiting plates, the anti-falling sliding blocks are symmetrically arranged at the top and the bottom of the outer side of the movable bin, the anti-falling sliding grooves matched with the anti-falling sliding blocks are symmetrically arranged at the top and the bottom of the inner side of the U-shaped anti-theft cover, the slots are alternately arranged at the two ends of the outer side of the movable bin, the inserting blocks matched with the slots are alternately arranged at the two ends of the inner side of the U-shaped anti-theft cover, the electric lifting rods are symmetrically arranged at the bottoms of the two ends of the inner side of the movable bin, the fixed limiting plates matched with the movable limiting plates are symmetrically arranged at the middle positions of the two ends of the inner side of the U-shaped anti-theft cover, and the strip-shaped through holes matched with the movable limiting plates are symmetrically arranged at the middle positions of the two ends of the outer side of the movable bin, and the control panel is electrically connected with the electric lifting rods through wires.
Preferably, the ash wiping component comprises a mounting bar, a limiting hole, a connecting bearing, a bar-shaped blackboard eraser, a limiting block and a first threaded rod, wherein the mounting bar is symmetrically arranged at two ends of the movable bin, the bar-shaped blackboard eraser is arranged on the inner side of the mounting bar, the connecting bearing is arranged at the middle position of the bar-shaped blackboard eraser, which is close to one side of the mounting bar, the first threaded rod is arranged at the middle position of the outer side of the mounting bar in a threaded manner, one end of the first threaded rod, which is close to the bar-shaped blackboard eraser, is fixedly connected with the inner side of the connecting bearing, the limiting hole is symmetrically arranged at the top and the bottom of the outer side of the mounting bar, and the limiting block matched with the limiting hole is symmetrically arranged at the top and the bottom of the outer side of the bar-shaped blackboard eraser.
Preferably, the adjusting part comprises a servo motor, a second threaded rod, an internal thread block, a movable groove and a roller, the movable groove is formed in the top and the bottom of the inner side of the mounting frame, the second threaded rod is arranged in the top of one group of movable grooves, two groups of internal thread blocks are arranged on the outer threads of the second threaded rod, the bottoms of the internal thread blocks are fixedly connected with the top of the movable bin, the roller matched with the movable groove is uniformly arranged at the bottom of the L-shaped underframe, the servo motor connected with the second threaded rod in a transmission manner is arranged at the top of one end of the mounting frame, and the control panel is electrically connected with the servo motor through a wire.
Preferably, the top that the installing frame is close to servo motor one end is installed the protection storehouse, servo motor is located the inside in protection storehouse, and the bottom a set of fixed bearing is installed to the both ends symmetry in movable groove, the both ends in the second threaded rod outside respectively with the inboard fixed connection of two sets of fixed bearings.
Preferably, buffer rods are symmetrically arranged at two ends of the inside of the installation frame, stop blocks are symmetrically arranged at two ends of the buffer rods, one end, far away from the movable bin, of the buffer rods penetrates through the installation frame, one end, far away from the movable bin, of the buffer rods is sleeved with a buffer spring, and two ends of the buffer spring are fixedly connected with a group of stop blocks and the installation frame respectively.
Preferably, side bar grooves are symmetrically formed in two ends of the inside of the mounting frame, and two ends of the U-shaped ash collecting groove extend to the inside of the two groups of side bar grooves respectively.
Preferably, two groups of auxiliary sliding grooves are symmetrically arranged at two ends of the outer side of the mounting frame, and limiting sliding strips matched with the auxiliary sliding grooves are symmetrically arranged at the middle position of the inner side of the U-shaped anti-theft cover.
Preferably, the top and the bottom of the mounting frame are symmetrically and uniformly provided with a fixing frame, the outer side of the fixing frame is provided with a threaded hole, and the inner side of the threaded hole is provided with a fixing bolt.
Preferably, a hand wheel is arranged at one end of the first threaded rod, which is far away from the strip-shaped blackboard eraser, and anti-skid patterns are arranged on the outer side of the hand wheel.
Compared with the prior art, the LED display screen with the protection anti-theft cover for the large classroom has the following beneficial effects:
1. when the anti-theft device is not used, the U-shaped anti-theft cover is moved to the outer side of the movable bin, so that the U-shaped anti-theft cover can completely shield the outer side of the movable bin, then the electric lifting rod is controlled to extend, the two groups of movable limiting plates gradually rise to the same height as the inner side fixing limiting plates of the U-shaped anti-theft cover, and the two groups of movable limiting plates are positioned at the inner sides of the two groups of fixing limiting plates, so that the U-shaped anti-theft cover cannot freely move left and right, the U-shaped anti-theft cover can completely shield the LED display screen main body, the LED display screen main body can be prevented from being damaged due to accidental collision, and the anti-theft capability of the LED display screen main body can be improved.
2. According to the invention, the servo motor can be controlled to drive the two groups of internal thread blocks to move towards the same end, namely the movable bin is driven to slowly move, the roller rolls in the movable groove at the bottom, so that the LED display screen main body can move left and right at the outer side of the blackboard, the blackboard part which is not covered by the movable bin is convenient for teachers to write, and the LED display screen displays relevant knowledge, thereby being beneficial to improving the teaching effect of students.
3. In the moving process of the movable bin, if all written contents on the blackboard need to be wiped, the first threaded rod is manually rotated to force the inner side of the strip-shaped blackboard eraser to be clung to the surface of the blackboard, the first threaded rod is utilized to wipe the surface of the passing blackboard when the movable bin drives the strip-shaped blackboard eraser to move, most of wiped dust falls into the U-shaped dust collecting groove, and a teacher or a student can keep away from the blackboard when the blackboard is wiped, so that the damage of flying chalk dust to the respiratory tract of a human body can be greatly reduced.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
FIG. 3 is an open schematic view of the U-shaped anti-theft cover of the present invention;
FIG. 4 is a front view of the U-shaped anti-theft cover of the present invention after disassembly;
FIG. 5 is a schematic perspective view of the connection of the U-shaped anti-theft cover and the movable cabin;
FIG. 6 is an inside schematic view of the U-shaped anti-theft cover of the present invention;
FIG. 7 is a side cross-sectional view of the movable cartridge of the present invention;
FIG. 8 is a side cross-sectional view of the ash wiping assembly of this invention;
fig. 9 is an enlarged view of fig. 2 at a in accordance with the present invention.
In the figure: 1. a mounting frame; 2. u-shaped anti-theft cover; 3. an auxiliary blackboard; 4. an ash wiping component; 401. a mounting bar; 402. a limiting hole; 403. connecting a bearing; 404. a strip-shaped blackboard eraser; 405. a limiting block; 406. a first threaded rod; 5. an adjustment assembly; 501. a servo motor; 502. a second threaded rod; 503. an internal thread block; 504. a movable groove; 505. a roller; 6. a movable bin; 7. a U-shaped ash collecting groove; 8. an auxiliary chute; 9. an anti-theft component; 901. a movable limiting plate; 902. a slot; 903. a bar-shaped through hole; 904. an electric lifting rod; 905. inserting blocks; 906. an anti-drop sliding block; 907. an anti-falling chute; 908. fixing a limiting plate; 10. an LED display screen main body; 11. a control panel; 12. a mounting bin; 13. a side bar-shaped groove; 14. an L-shaped underframe; 15. a scraper plate; 16. and limiting the sliding bar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a LED display screen with protection theftproof cover that big classroom was used, including installing frame 1, the inside of installing frame 1 is provided with movable storehouse 6, and movable storehouse 6's internally mounted has installation storehouse 12, installation storehouse 12's internally mounted has LED display screen main part 10, L type chassis 14 is installed to movable storehouse 6's bottom, L type chassis 14's interior bottom is provided with U type album ash groove 7, and the both ends of U type album ash groove 7 respectively with the bottom fixed connection at the inside both ends of installing frame 1, the ash scraping plate 15 that mutually support with U type album ash groove 7 is installed to movable storehouse 6's both ends symmetry, the interior top and the interior bottom of installing frame 1 are provided with adjustment subassembly 5 jointly, movable storehouse 6's outside is provided with U type theftproof cover 2, movable storehouse 6's inside and U type theftproof cover 2's inboard are provided with theftproof subassembly 9 jointly, movable storehouse 6's both ends symmetry is provided with the outside of wiping subassembly 4,U type theftproof cover 2 installs auxiliary blackboard 3, control panel 11 is installed to the bottom of installing frame 1 one end, control panel 11 passes through the wire and is connected with LED display screen main part 10 electricity.
Further, the anti-theft component 9 comprises a movable limiting plate 901, a slot 902, a strip-shaped through hole 903, an electric lifting rod 904, an inserting block 905, an anti-falling sliding block 906, an anti-falling sliding groove 907 and a fixed limiting plate 908, wherein the anti-falling sliding block 906 is symmetrically arranged at the top and the bottom of the outer side of the movable bin 6, the anti-falling sliding groove 907 matched with the anti-falling sliding block 906 is symmetrically arranged at the top and the bottom of the inner side of the U-shaped anti-theft cover 2, the inserting slots 902 are alternately arranged at the two ends of the outer side of the movable bin 6, the inserting blocks 905 matched with the inserting slots 902 are alternately arranged at the two ends of the inner side of the U-shaped anti-theft cover 2, the electric lifting rod 904 is symmetrically arranged at the bottom of the two ends of the inner side of the movable bin 6, the movable limiting plate 901 is symmetrically arranged at the middle position of the two ends of the inner side of the U-shaped anti-theft cover 2, the bar-shaped through holes 903 matched with the movable limiting plates 901 are symmetrically formed in the middle positions of the two ends of the outer side of the movable bin 6, the control panel 11 is electrically connected with the electric lifting rods 904 through wires, two groups of electric lifting rods 904 are controlled to extend, the two groups of movable limiting plates 901 gradually rise to the same height as the height of the inner side fixing limiting plates 908 of the U-shaped anti-theft cover 2, the two groups of movable limiting plates 901 are located on the inner sides of the two groups of fixing limiting plates 908, and therefore the U-shaped anti-theft cover 2 cannot freely move left and right, the U-shaped anti-theft cover 2 can cover the LED display screen main body 10 completely and firmly, and a good anti-theft effect is achieved.
Further, the ash wiping component 4 comprises a mounting bar 401, a limiting hole 402, a connecting bearing 403, a bar-shaped blackboard eraser 404, a limiting block 405 and a first threaded rod 406, the mounting bar 401 is symmetrically mounted at two ends of the movable bin 6, the bar-shaped blackboard eraser 404 is arranged on the inner side of the mounting bar 401, the connecting bearing 403 is mounted at the middle position of one side, close to the mounting bar 401, of the bar-shaped blackboard eraser 404, the first threaded rod 406 is arranged on the middle position of the outer side of the mounting bar 401 in a threaded manner, one end, close to the bar-shaped blackboard eraser 404, of the outer side of the first threaded rod 406 is fixedly connected with the inner side of the connecting bearing 403, the limiting hole 402 is symmetrically formed in the top and the bottom of the outer side of the mounting bar 401, the limiting block 405 matched with the limiting hole 402 is symmetrically mounted at the top and the bottom of the outer side of the bar-shaped blackboard eraser 404, the first threaded rod 406 is manually rotated to force the inner side of the bar-shaped blackboard eraser 404 to be tightly attached to the blackboard surface, then the servo motor 501 is controlled to drive the movable bin 6 to move left and right in the inner side of the mounting frame 1, and the roller 505 rolls in the movable bin 504, and the inner side of the movable bin 404 is utilized to wipe all written contents.
Further, the adjusting component 5 comprises a servo motor 501, a second threaded rod 502, internal thread blocks 503, a movable groove 504 and a roller 505, the movable groove 504 is formed in the top and the bottom of the inner side of the installation frame 1, the second threaded rod 502 is arranged in one group of movable grooves 504 in the top, two groups of internal thread blocks 503 are arranged on the outer side threads of the second threaded rod 502, the bottoms of the two groups of internal thread blocks 503 are fixedly connected with the top of the movable bin 6, the roller 505 matched with the movable groove 504 is uniformly arranged at the bottom of the L-shaped underframe 14, the servo motor 501 in transmission connection with the second threaded rod 502 is arranged at the top of one end of the installation frame 1, the control panel 11 is electrically connected with the servo motor 501 through a wire, the servo motor 501 is controlled to drive the second threaded rod 502 to rotate, and the movable bin 6 is forced to move on the inner side of the installation frame 1 by utilizing the thread effect.
Further, the top that installing frame 1 is close to servo motor 501 one end is installed the protection storehouse, and servo motor 501 is located the inside in protection storehouse, and fixed bearing is installed to the both ends symmetry of a set of movable groove 504 in bottom, and the both ends in the second threaded rod 502 outside are respectively with the inboard fixed connection of two sets of fixed bearing, when helping to protect servo motor 501, improve the stability of second threaded rod 502 in the rotation process.
Further, the buffer rods are symmetrically arranged at the two ends of the inside of the installation frame 1, the stop blocks are symmetrically arranged at the two ends of the buffer rods, one end of the buffer rods, which is far away from the movable bin 6, penetrates through the installation frame 1, one end of the buffer rods, which is far away from the movable bin 6, is sleeved with the buffer springs, the two ends of the buffer springs are fixedly connected with the outer group of stop blocks and the installation frame 1 respectively, and collision damage between the two ends of the movable bin 6 and the inner two ends of the installation frame 1 is avoided.
Further, the side bar grooves 13 are symmetrically formed at two ends of the inside of the mounting frame 1, and two ends of the U-shaped ash collecting groove 7 extend to the insides of the two groups of side bar grooves 13 respectively, so that chalk dust collected in the U-shaped ash collecting groove 7 is discharged from the inner bottoms of the side bar grooves 13 in a matched mode.
Further, two groups of auxiliary sliding grooves 8,U are symmetrically arranged at two ends of the outer side of the installation frame 1, and limiting sliding strips 16 matched with the auxiliary sliding grooves 8 are symmetrically arranged at the middle position of the inner side of the anti-theft cover 2, so that when the movable bin 6 moves to one end of the inner side of the installation frame 1, the limiting sliding strips 16 can be clamped into the auxiliary sliding grooves 8, and a stable supporting effect is achieved on the U-shaped anti-theft cover 2.
Further, the top and the bottom of the installation frame 1 are symmetrically and evenly provided with the fixing frame, the outer side of the fixing frame is provided with the threaded holes, and the inner side threads of the threaded holes are provided with the fixing bolts, so that the whole display screen equipment can be fixedly installed on the outer side of a blackboard in a large classroom.
Further, a hand wheel is installed at one end of the first threaded rod 406 far away from the strip-shaped blackboard eraser 404, and anti-skidding lines are arranged on the outer side of the hand wheel, so that a teacher can manually rotate the first threaded rod 406, and the inner side of the strip-shaped blackboard eraser 404 can be clung to the blackboard surface of a large classroom.
In embodiment 1, as shown in fig. 1-4, in normal use of the blackboard, a teacher can directly write at one end of the outer side of the blackboard, and after one end of the blackboard is fully written, the control panel 11 controls the servo motor 501 to drive the second threaded rod 502 to rotate, the movable cabin 6 is forced to move on the inner side of the installation frame 1 by utilizing the screw action, the blackboard which is fully written is partially shielded by the movable cabin 6, the other part which is not written on the blackboard is exposed, the teacher can continue writing, and the auxiliary blackboard 3 on the outer side of the U-shaped anti-theft cover 2 can also enable the teacher to temporarily write some teaching contents, so that the writing area of the blackboard can be increased.
In embodiment 2, as shown in fig. 1-6, when the LED display screen main body 10 is needed, the corresponding trick lock is input on the control panel 11, the control panel 11 is used to control the two sets of electric lifting rods 904 to shorten, so that the two sets of movable limiting plates 901 and the two sets of fixed limiting plates 908 are staggered with each other, at this time, a teacher can easily push the U-shaped anti-theft cover 2 to one end of the movable cabin 6 to fully expose the LED display screen main body 10, one set of inserting blocks 905 inside the U-shaped anti-theft cover 2 is blocked into one set of inserting slots 902 corresponding to the corresponding height position, then the relevant teaching video is played through the LED display screen main body 10, and when the LED display screen main body 10 is not used, the U-shaped anti-theft cover 2 is moved to the outer side of the movable cabin 6, the LED display screen main body 10 is fully blocked, then the two sets of electric lifting rods 904 are controlled to extend, so that the two sets of movable limiting plates 901 are gradually lifted to the same height as the fixed limiting plates 908 inside the U-shaped anti-theft cover 2, at this time, the two sets of movable limiting plates 901 are positioned inside the two sets of fixed limiting plates 908, so that the U-shaped anti-theft cover 2 can not fully play a role in playing a role of the anti-theft cover 2, and the left-theft cover 2 and can not fully play a role of the anti-theft protection.
In embodiment 3, as shown in fig. 2, 5, 7 and 9, when the writing content used on the blackboard needs to be wiped, the first threaded rod 406 is manually rotated to force the inner side of the strip-shaped blackboard eraser 404 to be clung to the surface of the blackboard, then the servo motor 501 is controlled to drive the movable bin 6 to move left and right in the installation frame 1, the roller 505 rolls in the movable groove 504, the whole writing content on the blackboard is wiped off by the strip-shaped blackboard eraser 404, most of the chalk dust falling in the wiping process falls into the U-shaped ash collecting groove 7, and the chalk dust collected in the U-shaped ash collecting groove 7 is pushed into the side bar 13 by the movable ash scraping plate 15 and falls from the inner bottom of the side bar 13.
Working principle: before the blackboard is used, the device is powered on, a teacher can directly write at one end of the outer side of the blackboard when the blackboard is normally used, after one end of the blackboard is written fully, the servo motor 501 is controlled by the control panel 11 to drive the second threaded rod 502 to rotate, the movable bin 6 is forced to move on the inner side of the mounting frame 1 by utilizing the action of threads, the blackboard part which is fully written with the content is shielded by the movable bin 6, the other part which is not written on the blackboard is exposed, and the teacher can continue writing; when the LED display screen main body 10 is needed, a corresponding coded lock is input on the control panel 11, the control panel 11 is used for controlling the two groups of electric lifting rods 904 to be shortened, so that the two groups of movable limiting plates 901 and the two groups of fixed limiting plates 908 are staggered with each other, at the moment, a teacher can easily push the U-shaped anti-theft cover 2 to one end of the movable cabin 6, the LED display screen main body 10 is completely exposed, a group of inserting blocks 905 in the U-shaped anti-theft cover 2 are clamped into a group of inserting slots 902 corresponding to the corresponding height positions, then related teaching videos are played through the LED display screen main body 10, if all written contents on a blackboard need to be wiped in the moving cabin 6, the first threaded rod 406 is manually rotated, the inner side of the strip-shaped blackboard eraser 404 is forced to be clung to the surface of the blackboard, the first threaded rod 406 is wiped by the first threaded rod 406 when the movable cabin 6 drives the strip-shaped blackboard eraser 404 to move, most of the dust in the wiping process falls into the U-shaped dust collecting groove 7, and when the blackboard is wiped, a teacher or a student can keep away from the blackboard, so that the damage of flying chalk dust to the respiratory tract of a human body can be greatly reduced, the chalk dust collected in the U-shaped dust collecting groove 7 can be pushed into the side bar groove 13 by the dust scraping plate 15, the chalk dust falling from the bottom in the side bar groove 13 can be collected, when the device is not used, the U-shaped anti-theft cover 2 is moved to the outer side of the movable bin 6 again, the LED display screen main body 10 is completely shielded, then the two groups of electric lifting rods 904 are controlled to be elongated, the two groups of movable limiting plates 901 are gradually lifted to the same height as the inner side fixed limiting plates 908 of the U-shaped anti-theft cover 2, at the moment, the two groups of movable limiting plates 901 are positioned at the inner sides of the two groups of fixed limiting plates 908, therefore, the U-shaped anti-theft cover 2 cannot freely move left and right, the U-shaped anti-theft cover 2 can cover the LED display screen main body 10 completely, damage to the LED display screen main body 10 caused by accidental collision can be avoided, and anti-theft capability of the LED display screen main body 10 can be improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An LED display screen with protection anti-theft cover for large classroom, which is characterized in that: the anti-theft device comprises a mounting frame (1), wherein a movable bin (6) is arranged in the mounting frame (1), a mounting bin (12) is arranged in the movable bin (6), an LED display screen main body (10) is arranged in the mounting bin (12), an L-shaped underframe (14) is arranged at the bottom of the movable bin (6), a U-shaped ash collecting groove (7) is arranged at the inner bottom of the L-shaped underframe (14), two ends of the U-shaped ash collecting groove (7) are respectively fixedly connected with the bottoms of the two ends of the mounting frame (1), ash scraping plates (15) matched with the U-shaped ash collecting groove (7) are symmetrically arranged at the two ends of the bottom of the movable bin (6), an adjusting component (5) is jointly arranged at the inner top and the inner bottom of the mounting frame (1), an anti-theft cover (2) is jointly arranged at the outer side of the movable bin (6), an anti-theft component (9) is jointly arranged at the inner side of the U-shaped anti-theft cover (2), two ends of the movable bin (6) are respectively fixedly connected with the bottoms of the mounting frame (1), and an auxiliary anti-theft panel (11) is arranged at the outer side of the mounting frame (11), and the LED display screen main body (11) is arranged at the outer side of the mounting frame; the anti-theft component (9) comprises a movable limiting plate (901), a slot (902), a strip-shaped through hole (903), an electric lifting rod (904), an inserting block (905), an anti-falling sliding block (906), anti-falling sliding grooves (907) and a fixed limiting plate (908), wherein the anti-falling sliding block (906) is symmetrically arranged at the top and the bottom of the outer side of the movable bin (6), the anti-falling sliding grooves (907) matched with the anti-falling sliding block (906) are symmetrically arranged at the top and the bottom of the inner side of the U-shaped anti-theft cover (2), the inserting blocks (905) matched with the inserting groove (902) are staggered at the two ends of the inner side of the U-shaped anti-theft cover (2), the electric lifting rod (904) is symmetrically arranged at the bottom of the two ends of the inner side of the movable bin (6), the fixed limiting plate (908) matched with the movable limiting plate (901) are symmetrically arranged at the middle position of the two ends of the inner side of the U-shaped anti-theft cover (2), and the electric lifting rod (904) is connected with the electric lifting rod (904) through the strip-shaped through hole (11) at the middle position of the two ends of the inner side of the movable bin (6); the dust wiping component (4) comprises a mounting bar (401), a limiting hole (402), a connecting bearing (403), a bar-shaped blackboard eraser (404), a limiting block (405) and a first threaded rod (406), wherein the mounting bar (401) is symmetrically arranged at two ends of the movable bin (6), the bar-shaped blackboard eraser (404) is arranged at the inner side of the mounting bar (401), the connecting bearing (403) is arranged at the middle position of the bar-shaped blackboard eraser (404) close to one side of the mounting bar (401), the first threaded rod (406) is arranged at the middle position of the outer side of the mounting bar (401) in a threaded manner, one end of the outer side of the first threaded rod (406) close to the bar-shaped blackboard eraser (404) is fixedly connected with the inner side of the connecting bearing (403), the limiting hole (402) is symmetrically arranged at the top and the bottom of the outer side of the mounting bar-shaped blackboard eraser (404), and the limiting block (405) matched with the limiting hole (402) are symmetrically arranged at the top and the bottom of the outer side of the mounting bar-shaped blackboard eraser (404). The utility model provides an adjusting part (5) is including servo motor (501), second threaded rod (502), internal thread piece (503), movable groove (504) and gyro wheel (505), movable groove (504) have all been seted up at the inboard top of installing frame (1) and bottom, and the inside of a set of movable groove (504) in top is provided with second threaded rod (502), the outside screw thread of second threaded rod (502) is provided with two sets of internal thread piece (503), two sets of the bottom of internal thread piece (503) all with the top fixed connection of movable storehouse (6), gyro wheel (505) with movable groove (504) looks adaptation are evenly installed to the bottom of L type chassis (14), servo motor (501) are connected with second threaded rod (502) transmission are installed at the top of installing frame (1) one end, control panel (11) are connected with servo motor (501) electricity through the wire.
2. The LED display screen with protective anti-theft cover for large classrooms of claim 1, wherein: the top that installing frame (1) is close to servo motor (501) one end is installed the protection storehouse, servo motor (501) are located the inside in protection storehouse, and the bottom a set of fixed bearing is installed to the both ends symmetry of movable groove (504), the both ends in the outside of second threaded rod (502) are respectively with the inboard fixed connection of two sets of fixed bearings.
3. The LED display screen with protective anti-theft cover for large classrooms of claim 2, wherein: the buffer rods are symmetrically arranged at the two ends of the inside of the installation frame (1), the check blocks are symmetrically arranged at the two ends of the buffer rods, one end, far away from the movable bin (6), of the buffer rods penetrates through the installation frame (1), one end, far away from the movable bin (6), of the buffer rods is sleeved with the buffer springs, and the two ends of the buffer springs are fixedly connected with the outer group of the check blocks and the installation frame (1) respectively.
4. An LED display screen with protective anti-theft cover for large classrooms according to claim 3, characterized in that: side bar grooves (13) are symmetrically formed in two ends of the inside of the mounting frame (1), and two ends of the U-shaped ash collecting groove (7) extend to the inside of the two groups of side bar grooves (13) respectively.
5. The LED display screen with protective anti-theft cover for large classrooms of claim 4, wherein: two groups of auxiliary sliding grooves (8) are symmetrically arranged at two ends of the outer side of the mounting frame (1), and limiting sliding strips (16) matched with the auxiliary sliding grooves (8) are symmetrically arranged at the middle position of the inner side of the U-shaped anti-theft cover (2).
6. The LED display screen with protective anti-theft cover for large classrooms of claim 5, wherein: the top and the bottom of the mounting frame (1) are symmetrically and uniformly provided with a fixing frame, the outer side of the fixing frame is provided with a threaded hole, and the inner side of the threaded hole is provided with a fixing bolt.
7. The LED display screen with protective anti-theft cover for large classrooms of claim 6, wherein: a hand wheel is installed at one end, far away from the strip-shaped blackboard eraser (404), of the first threaded rod (406), and anti-skidding lines are arranged on the outer side of the hand wheel.
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| CN202111066695.XA CN113744657B (en) | 2021-09-13 | 2021-09-13 | LED display screen with protection anti-theft cover for large classroom |
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| CN114783315B (en) * | 2022-02-09 | 2023-07-07 | 深圳市祥恒光电科技有限公司 | Temporary LCD display screen with protection anti-theft cover |
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