CN112289085A - Improved education demonstration equipment - Google Patents
Improved education demonstration equipment Download PDFInfo
- Publication number
- CN112289085A CN112289085A CN202011243799.9A CN202011243799A CN112289085A CN 112289085 A CN112289085 A CN 112289085A CN 202011243799 A CN202011243799 A CN 202011243799A CN 112289085 A CN112289085 A CN 112289085A
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- CN
- China
- Prior art keywords
- writing board
- erasing
- lifting
- platform
- area
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
- A47B19/10—Reading-desks; Lecterns; Pulpits, i.e. free-standing characterised by association with auxiliary devices, e.g. paper clamps, line indicators
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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
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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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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses improved education demonstration equipment which comprises a podium, a writing board device, a writing board mounting groove, a writing board lifting device and a writing board erasing device, wherein the podium is placed on the ground through a platform body, the lower part of the platform body is of a cabinet body structure and used for placing a PC (personal computer) host and an electric control device, the upper part of the platform body is a platform surface, and a display, a PC control area, a lifting display platform, a touch control induction area, a control key area, an expansion interface area, a camera and a storage box are arranged on the platform surface; the writing board device is provided with an inner writing board and an outer writing board, and the inner writing board and the outer writing board are installed in a writing board installation groove on a wall at a position needing to be installed; the lifting display platform designed by the invention is used for displaying lecture articles, the man-machine interconnection equipment is intelligently interconnected, and the designed writing board lifting device and the writing board erasing device avoid time and labor waste caused by manual erasing and avoid potential safety hazards of chalk dust to the respiratory system and eyes of a lecturer.
Description
Technical Field
The invention relates to the technical field of education equipment, in particular to improved education demonstration equipment.
Background
Education presentation equipment is the equipment that educates worker's frequent use, and current education presentation equipment function is comparatively single, does not play man-machine interconnection's education level. In a general larger classroom, when a lecturer demonstrates things on a platform, students cannot see clearly and a good teaching effect cannot be achieved. When the action explanation demonstration is carried out in the internal hall of the physical education, the students only see the actions of the teachers because the physical demonstration is not clear, and the essentials of the technical actions of the teachers can not be well understood. Meanwhile, the existing writing boards all adopt blackboards, the blackboards need chalk to write, and then the blackboards are erased by adopting the blackboard eraser. The powder of chalk all exists great potential safety hazard to mr's respiratory and eyes, the blackboard erase inefficiency, and the blackboard all goes up and down through the manpower, wastes time and energy. Therefore, an improved education demonstration device is urgently needed to be designed to solve the problems that the existing podium is single in function, low in intelligent level and incapable of automatically lifting and erasing the writing board.
Disclosure of Invention
In view of the problems in the prior art, it is an object of the present invention to provide an improved educational demonstration apparatus.
The technical scheme adopted by the invention for solving the technical problems is as follows: an improved education demonstration device comprises a podium, a writing board device, a writing board mounting groove, a writing board lifting device and a writing board erasing device,
the platform is placed on the ground through a platform body, the lower part of the platform body is of a cabinet body structure and is used for placing a PC host and an electric control device, the upper part of the platform body is a platform surface, and a display, a PC machine control area, a lifting display platform, a touch control induction area, a control key area, an expansion interface area, a camera and a storage box are arranged on the platform surface;
the writing board device is provided with an inner writing board and an outer writing board, and the inner writing board and the outer writing board are installed in a writing board installation groove on a wall at a position needing to be installed;
the two sides in the writing board mounting groove are provided with slide rails of a writing board lifting device, the slide rails are connected with slide blocks arranged on the two sides of the inner writing board and the outer writing board in a sliding manner, the rear parts of the two sides on the inner writing board are provided with screw bases, the screw bases are screwed on the large-pitch lead screws, the tops of the large-pitch lead screws are rotatably connected with upper bearing bases, the lower parts of the large-pitch lead screws are rotatably connected with lower bearing bases, the bottoms of the large-pitch lead screws are provided with first conical teeth which are meshed with second conical teeth, the second conical teeth are arranged on transmission shafts, one ends of the transmission shafts are rotatably connected with bearing bases of the transmission shafts, the other ends of the transmission shafts are connected with speed reducers, the rear ends of the speed reducers are connected with lifting motors for driving the second conical teeth to rotate by the lifting motors, one conical teeth rotates to drive the large-pitch, the traction rope passes through a pulley arranged at the upper part in the writing board mounting groove, the other end of the traction rope is arranged at the top of the outer writing board and used for pulling the upper writing board to ascend when the inner writing board descends and enabling the upper writing board to descend by gravity when the inner writing board ascends;
the middle part of the joint of the inner writing board and the outer writing board is provided with an erasing frame provided with a writing board erasing device, the erasing frame adopts a hollow structure with an inner layer and an outer layer, the hollow structure of the outer layer is used for the outer writing board to pass through, an outer erasing brush is arranged at the inner side of the outer layer hollow structure close to the outer panel of the outer demonstration board, the outer erasing brush is arranged on an outer transmission shaft, one end of the outer transmission shaft is rotatably connected to an outer bearing seat, the other end of the outer transmission shaft is connected to an outer erasing motor, is used for automatically erasing the outer writing board by the rotation of the outer erasing brush controlled by the outer erasing motor, the inner layer hollow structure is used for the inner writing board to pass through, and an inner erasing brush is arranged at the inner side of the inner hollow structure and close to the outer panel of the inner writing board, the inner erasing brush is arranged on an inner transmission shaft, one end of the inner transmission shaft is rotatably connected to an inner bearing seat, and the other end of the inner transmission shaft is connected to an inner erasing motor and used for automatically erasing the inner writing board by the rotation of the inner erasing brush under the control of the inner erasing motor.
Specifically, the PC control area is provided with a keyboard and a mouse used by a PC host, the PC control area is provided with an openable cover body for locking the PC control area, the PC host is connected with a display, and the upper part of the display is provided with a camera capable of rotating at multiple angles for shooting demonstration and operation of a lecturer, projecting the demonstration and operation on the display or the projector and recording a lecture video.
Specifically, a lifting display platform is arranged on the table top and used for a speaker to place large demonstration articles on the lifting display platform for lifting demonstration, a lifting cylinder is connected to the lower portion of the lifting display platform and is installed in a cabinet body structure of the table body; a control key area is arranged on one side of the lifting display platform, a control key for controlling the lifting cylinder, the lifting motor, the internal erasing motor and the external erasing motor switch is arranged in the control key area, and the control key is electrically connected with the electrical control device.
Specifically, the expansion interface area on the table top is provided with a plurality of interfaces for connecting the interactive demonstration equipment, and a touch sensing area is arranged beside the expansion interface area and used for sensing the display to which the action of the interactive demonstration equipment of the speaker is connected.
Specifically, the storage box is arranged at the front end of the table top and used for placing demonstration equipment.
Specifically, the slide rail is equipped with inside and outside two, and the slider on the interior rendition board is connected to the slide rail of inboard, and the slider on the slide rail connection outside is write the board outward.
The invention has the following beneficial effects:
the improved education demonstration equipment designed by the invention has more complete functions, the lifting display platform is used for displaying lecture articles, the man-machine interconnection equipment is used for carrying out intelligent interconnection, the actual demonstration action is projected onto the display or the projector, the intelligent lecture demonstration is realized, listeners can quickly understand the lecture content, and the function of the lecture platform is more complete; the board device of writing of design adopts the board elevating gear of writing to realize the automatic control through the control keypad and goes up and down, the height of board and the board of writing outward in the automatic control, simultaneously including writing board and writing outward board department install the board of writing and erasing the device, it erases board and writing outward board automatically respectively to erase through erasing brush and erasing outward in the control keypad control, avoid artifical the wasting time and energy of erasing, and avoid the chalk end to the potential safety hazard that speaker's respiratory and eyes exist.
Drawings
Fig. 1 is a schematic structural view of a podium.
Fig. 2 is a schematic structural diagram of the writing board device.
Fig. 3 is a schematic structural diagram of the writing board lifting device.
Fig. 4 is a side view of the performance board apparatus.
Fig. 5 is a top view of the performance board erasing apparatus.
In the figure: 1-a podium; 2-a writing board device; 3-writing a board mounting groove; 4-a writing board lifting device; 5-a performance board erasing device; 101-a table body; 102-a table top; 103-a display; 104-PC machine control area; 105-a lifting display stand; 106-touch sensing area; 107-control key area; 108 — an extended interface region; 109-a camera; 110-a storage box; 201-inner writing board; 202-outer rendering board; 401-a slide rail; 402-a slider; 403-coarse pitch lead screw; 404-a nut seat; 405-an upper bearing block; 406-lower bearing seats; 407-conical tooth one; 408-a second conical tooth; 409-a transmission shaft; 410-a drive shaft bearing seat; 411-a lift motor; 412-a reducer; 413-a pulley; 414-a traction rope; 501-erasing frame; 502-outer drive shaft; 503-outer bearing seats; 504-external erasing brush; 505-outer erase motor; 506-an inner drive shaft; 507-inner bearing seat; 508-inner scrub brush; 509-inner erase motor.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely further explained in detail in the following with the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, an improved education presentation apparatus includes a lecture table 1, a performance board device 2, a performance board installation groove 3, a performance board elevating device 4, and a performance board erasing device 5.
The lecture table 1 is placed on the ground through a table body 101, a cabinet body structure is arranged at the lower part of the table body 101 and used for placing a PC host and an electric control device, a table top 102 is arranged at the upper part of the table body 101, and a display 103, a PC control area 104, a lifting display table 105, a touch induction area 106, a control key area 107, an expansion interface area 108, a camera 109 and a storage box 110 are arranged on the table top 102; the PC control area 104 is provided with a keyboard and a mouse used by the PC host for controlling the PC host, and the PC control area 104 is provided with an openable cover body for locking the PC control area 104 to prevent dust from falling in, and meanwhile, other people are prevented from operating the PC host randomly, so that the PC control area is safer and more reliable. The PC host computer is connected with the display 103, and multi-angle rotating's camera 109 is installed on the upper portion of display 103 for shoot lecturer's demonstration and operation and project to display 103 or projecting apparatus on, make the listener more clear see out lecture content and the material object of lecturer, the educational effect is better, the camera is with the lecture content of lecture recording video, later stage student can watch once more, consolidate the study content, can directly regard as the teaching material simultaneously.
The table-board 102 is provided with a lifting display platform 105, which is used for a speaker to place a large demonstration article on the lifting display platform 105 for lifting demonstration, so that the listener can observe the demonstration article more conveniently and intuitively, the lower part of the lifting display platform 105 is connected with a lifting cylinder, and the lifting cylinder is arranged in a cabinet body structure of the table body; a control key area 107 is arranged on one side of the lifting display platform 105, the control key area 107 is provided with control keys for controlling the switches of the lifting cylinder, the lifting motor 411, the inner erasing motor 509 and the outer erasing motor 505, the control keys are electrically connected with an electrical control device and are used for automatically controlling the lifting of the inner writing board 201 and the lifting of the outer writing board 202 through the control keys, the lifting of the lifting display platform 105 is realized, the inner erasing motor 509 and the outer erasing motor 505 respectively control the rotation of the inner erasing brush 508 and the outer erasing brush 504, and the automatic erasing of the contents on the inner writing board 201 and the outer writing board 202 is realized.
The extension interface area 108 on the table top 102 is provided with a plurality of interfaces for connecting the interactive demonstration device, and a touch sensing area 106 for sensing the motion of the interactive demonstration device of the speaker connected to the display 103 is arranged beside the extension interface area 108. The man-machine interconnection equipment carries out intelligent interconnection, and the real demonstration action is projected on display 103 or the projecting apparatus, realizes intelligent demonstration speech, makes the listener more quick understand speech content, realizes that the podium function is more complete. A storage box 110 is mounted at the front end of the table 102 for holding a demonstration device.
The performance board device 2 is provided with an inner performance board 201 and an outer performance board 202, and the inner performance board 201 and the outer performance board 202 are installed in the performance board installation groove 3 on the wall at the required installation position.
The slide rails of the writing board lifting device 4 are installed on two sides in the writing board installation groove 3, the slide rails 401 are connected with the slide blocks 402 installed on two sides of the inner writing board 201 and the outer writing board 202 in a sliding mode, the slide rails 401 are internally and externally arranged, the slide rails 401 on the inner side are connected with the slide blocks 402 on the inner writing board 201, and the slide rails 401 on the outer side are connected with the slide blocks 402 on the outer writing board 202.
The rear parts of two sides of the inner demonstration board 201 are provided with a screw seat 404, the screw seat 404 is connected to a large-pitch lead screw 403 through a screw, the top of the large-pitch lead screw 403 is rotatably connected with an upper bearing seat 405, the lower part of the large-pitch lead screw 403 is rotatably connected with a lower bearing seat 406, the bottom of the large-pitch lead screw 403 is provided with a first conical tooth 407 below the lower bearing seat 406, the first conical tooth 407 is meshed with a second conical tooth 408, the second conical tooth 408 is arranged on a transmission shaft 409, one end of the transmission shaft 409 is rotatably connected with a transmission shaft bearing seat 410, the other end of the transmission shaft 409 is connected with a speed reducer 412, the rear end of the speed reducer 412 is connected with a lifting motor 411 for driving the second conical tooth 408 to rotate by the lifting motor 411, the first conical tooth 407 drives the large-pitch lead screw 403 to rotate, the lifting of the inner demonstration board 201 is completed, the, the other end of the pulling string 414 is mounted on top of the outer writing board 202 for pulling the outer writing board 202 up when the inner writing board 201 is lowered, and the outer writing board 202 is lowered by gravity when the inner writing board 201 is raised.
An erasing frame 501 arranged on the erasing device 5 of the writing board is arranged in the middle of the joint of the inner writing board 201 and the outer writing board 202, the erasing frame 501 adopts a hollow structure with an inner layer and an outer layer, the outer layer hollow structure is used for the outer writing board 202 to pass through, an outer erasing brush 504 is arranged on the inner side of the outer layer hollow structure close to the outer panel of the outer writing board 202, the outer erasing brush 504 is arranged on an outer transmission shaft 502, one end of the outer transmission shaft 502 is rotatably connected on an outer bearing seat 503, the other end of the outer transmission shaft 502 is connected on an outer erasing motor 505, the outer erasing motor 505 is used for controlling the rotation of the outer erasing brush 504 to automatically erase the outer writing board 202, the inner layer hollow structure is used for the inner writing board 201 to pass through, an inner erasing brush 508 is arranged on the inner layer hollow structure close to the outer panel of the inner writing board 201, the inner erasing brush 508 is arranged on the inner transmission shaft 506, one end of the inner transmission shaft 506 is rotatably connected on the inner, the inner erase motor 509 controls the rotation of the inner erase brush 508 to automatically erase the inner performance board 201.
The writing board device 2 adopts the writing board lifting device 4 to realize automatic control lifting through the control key area 107, automatically controls the heights of the inner writing board 201 and the outer writing board 202, meanwhile, the writing board erasing device 5 is installed at the positions of the inner writing board 201 and the outer writing board 202, and controls the inner erasing brush 508 and the outer erasing brush 504 to respectively and automatically erase the inner writing board 201 and the outer writing board 202 through the control key area 107, so that time and labor for manual erasing are avoided, and potential safety hazards of chalk dust to the respiratory system and eyes of a speaker are avoided.
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (6)
1. An improved education demonstration device is characterized by comprising a podium, a writing board device, a writing board mounting groove, a writing board lifting device and a writing board erasing device,
the platform is placed on the ground through a platform body, the lower part of the platform body is of a cabinet body structure and is used for placing a PC host and an electric control device, the upper part of the platform body is a platform surface, and a display, a PC machine control area, a lifting display platform, a touch control induction area, a control key area, an expansion interface area, a camera and a storage box are arranged on the platform surface;
the writing board device is provided with an inner writing board and an outer writing board, and the inner writing board and the outer writing board are installed in a writing board installation groove on a wall at a position needing to be installed;
the two sides in the writing board mounting groove are provided with slide rails of a writing board lifting device, the slide rails are connected with slide blocks arranged on the two sides of the inner writing board and the outer writing board in a sliding manner, the rear parts of the two sides on the inner writing board are provided with screw bases, the screw bases are screwed on the large-pitch lead screws, the tops of the large-pitch lead screws are rotatably connected with upper bearing bases, the lower parts of the large-pitch lead screws are rotatably connected with lower bearing bases, the bottoms of the large-pitch lead screws are provided with first conical teeth which are meshed with second conical teeth, the second conical teeth are arranged on transmission shafts, one ends of the transmission shafts are rotatably connected with bearing bases of the transmission shafts, the other ends of the transmission shafts are connected with speed reducers, the rear ends of the speed reducers are connected with lifting motors for driving the second conical teeth to rotate by the lifting motors, one conical teeth rotates to drive the large-pitch, the traction rope penetrates through a pulley arranged at the upper part in the writing board mounting groove, the other end of the traction rope is arranged at the top of the outer writing board and used for pulling the outer writing board to rise when the inner writing board descends and enabling the outer writing board to descend by gravity when the inner writing board ascends;
the middle part of the joint of the inner writing board and the outer writing board is provided with an erasing frame provided with a writing board erasing device, the erasing frame adopts a hollow structure with an inner layer and an outer layer, the hollow structure of the outer layer is used for the outer writing board to pass through, an outer erasing brush is arranged at the inner side of the outer layer hollow structure close to the outer panel of the outer demonstration board, the outer erasing brush is arranged on an outer transmission shaft, one end of the outer transmission shaft is rotatably connected to an outer bearing seat, the other end of the outer transmission shaft is connected to an outer erasing motor, is used for automatically erasing the outer writing board by the rotation of the outer erasing brush controlled by the outer erasing motor, the inner layer hollow structure is used for the inner writing board to pass through, and an inner erasing brush is arranged at the inner side of the inner hollow structure and close to the outer panel of the inner writing board, the inner erasing brush is arranged on an inner transmission shaft, one end of the inner transmission shaft is rotatably connected to an inner bearing seat, and the other end of the inner transmission shaft is connected to an inner erasing motor and used for automatically erasing the inner writing board by the rotation of the inner erasing brush under the control of the inner erasing motor.
2. The improved education demonstration device as claimed in claim 1 characterized in that the PC manipulation area is provided with a keyboard and a mouse for the PC host, and the PC manipulation area is provided with an openable cover for locking the PC manipulation area, the PC host is connected with the display, the upper part of the display is provided with a multi-angle rotating camera for shooting the demonstration and operation of the speaker and projecting the same onto the display or the projector, and recording the same as the lecture video.
3. The improved education demonstration device according to claim 1 characterized in that a lifting display platform is arranged on the table top for the lecturer to place large demonstration articles on the lifting display platform for lifting demonstration, a lifting cylinder is connected to the lower part of the lifting display platform and is installed in the cabinet body structure of the table body; a control key area is arranged on one side of the lifting display platform, a control key for controlling the lifting cylinder, the lifting motor, the internal erasing motor and the external erasing motor switch is arranged in the control key area, and the control key is electrically connected with the electrical control device.
4. An improved education presentation device according to claim 1 characterized in that the extended interface area on the table top is provided with a number of interfaces for connecting the interactive presentation device, and a touch sensing area is provided beside the extended interface area for sensing the display to which the speaker's interactive presentation device is connected.
5. An improved educational presentation device according to claim 1 in which the storage box is mounted at the front end of the counter for placement of the presentation device.
6. The improved educational presentation device of claim 1, wherein the slide track has two inner and outer sides, the inner slide track connecting the slide block on the inner writing board and the outer slide track connecting the slide block on the outer writing board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243799.9A CN112289085A (en) | 2020-11-10 | 2020-11-10 | Improved education demonstration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243799.9A CN112289085A (en) | 2020-11-10 | 2020-11-10 | Improved education demonstration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112289085A true CN112289085A (en) | 2021-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011243799.9A Pending CN112289085A (en) | 2020-11-10 | 2020-11-10 | Improved education demonstration equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN112289085A (en) |
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| CN205311182U (en) * | 2015-12-11 | 2016-06-15 | 陈科 | Take blackboard subassembly of self -cleaning function |
| CN205364959U (en) * | 2015-12-16 | 2016-07-06 | 重庆电子工程职业学院 | Automatic dust -free blackboard eraser |
| CN206644536U (en) * | 2016-12-21 | 2017-11-17 | 安徽工程大学机电学院 | A kind of Dual-layer blackboard cleaning device |
| CN209993140U (en) * | 2019-03-26 | 2020-01-24 | 罗伟俊 | Multimedia teaching platform |
| CN111743298A (en) * | 2020-07-07 | 2020-10-09 | 梧州星河科技有限公司 | Multi-media movable multi-functional podium |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202608341U (en) * | 2012-03-08 | 2012-12-19 | 罗奕永 | Circulating type double-layer self-erasing blackboard |
| CN203252164U (en) * | 2013-04-03 | 2013-10-30 | 广州市富可士数码科技有限公司 | Turnover multimedia lectern with internally-installed material object display stand |
| CN203493070U (en) * | 2013-08-13 | 2014-03-26 | 肖雨辰 | Multifunctional teaching platform |
| CN203888458U (en) * | 2014-06-12 | 2014-10-22 | 天津龙腾未来教育科技发展有限公司 | Double-layer slideable teaching blackboard |
| CN204149729U (en) * | 2014-09-28 | 2015-02-11 | 朱旭 | A kind of Destination Management practical teaching blackboard |
| CN205311182U (en) * | 2015-12-11 | 2016-06-15 | 陈科 | Take blackboard subassembly of self -cleaning function |
| CN205364959U (en) * | 2015-12-16 | 2016-07-06 | 重庆电子工程职业学院 | Automatic dust -free blackboard eraser |
| CN206644536U (en) * | 2016-12-21 | 2017-11-17 | 安徽工程大学机电学院 | A kind of Dual-layer blackboard cleaning device |
| CN209993140U (en) * | 2019-03-26 | 2020-01-24 | 罗伟俊 | Multimedia teaching platform |
| CN111743298A (en) * | 2020-07-07 | 2020-10-09 | 梧州星河科技有限公司 | Multi-media movable multi-functional podium |
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Application publication date: 20210129 |