CN112497973A - A wipe cleaning device for wisdom blackboard - Google Patents
A wipe cleaning device for wisdom blackboard Download PDFInfo
- Publication number
- CN112497973A CN112497973A CN202011456670.6A CN202011456670A CN112497973A CN 112497973 A CN112497973 A CN 112497973A CN 202011456670 A CN202011456670 A CN 202011456670A CN 112497973 A CN112497973 A CN 112497973A
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- CN
- China
- Prior art keywords
- blackboard
- erasing
- cleaning device
- blackboard body
- sliding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- 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
- B43L1/004—Repeatedly-usable boards or tablets for writing or drawing with illuminating devices
-
- 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
-
- 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
-
- 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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- 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 an erasing and cleaning device for an intelligent blackboard, and relates to the technical field of teaching equipment. The blackboard comprises a first blackboard, a second blackboard, an erasing device and a cleaning device, wherein the first blackboard is arranged inside the second blackboard; the erasing device comprises a fixed block and an electromagnetic slide rail; the erasing device comprises fixed blocks and an electromagnetic sliding rail, the two fixed blocks are oppositely arranged on the front side surface of the upper end of the second blackboard body, two ends of the electromagnetic sliding rail are respectively connected with the inner side surfaces of the two fixed blocks, and the cleaning device comprises a chalk dust collecting tank. According to the blackboard eraser, the second blackboard slides relative to the first blackboard, so that the first blackboard can be conveniently retracted into the second blackboard, meanwhile, the erasing device is convenient for erasing blackboard writing on the surface of the second blackboard, chalk dust generated by erasing is collected and adsorbed by matching with the cleaning device, so that the chalk dust is effectively prevented from flying, the use is convenient, and the cleanness of a teaching environment is ensured.
Description
Technical Field
The invention belongs to the technical field of teaching equipment, and particularly relates to an erasing and cleaning device for an intelligent blackboard.
Background
The blackboard is an indispensable teaching aid of daily teaching training, plays important role at daily teaching in-process, and the blackboard that uses at present is traditional blackboard mostly, but along with the progress of society and the rapid development of education trade, in order to satisfy people's teaching needs, various wisdom blackboards are derived, have made things convenient for the teaching greatly and have improved the teaching quality.
The current teaching blackboard specification differs, a great variety, but the face area that most of teaching blackboards can supply to write is limited, needs the manual work to clean, can produce a large amount of chalk dust, leads to teaching environment chalk dust to fly upward everywhere, and is harmful healthy, and most blackboard use area is great simultaneously, and just can supply the chalk to write the blackboard and write, and the teaching scope is limited, can not be suitable for each kind of teaching mode, and the practicality is relatively poor.
Disclosure of Invention
The invention aims to provide an erasing and cleaning device for an intelligent blackboard, which is convenient for controlling a left second blackboard body and a right second blackboard body to slide relative to a first blackboard body through the sliding fit of a sliding block and a sliding groove, and drives a blackboard eraser to reciprocate on the surface of a writing panel through the sliding fit of an electromagnetic sliding block and an electromagnetic sliding rail, so that the problems that the existing blackboard needs to be manually erased to generate a large amount of chalk dust, the health of teachers is harmed, and the blackboard is not erased cleanly are solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an erasing and cleaning device for an intelligent blackboard, which comprises a first blackboard, a second blackboard, an erasing device and a cleaning device, wherein the first blackboard is arranged in the second blackboard;
first blackboard includes first blackboard body and sliding tray, and is a plurality of the sliding tray sets up respectively two surfaces and front and back two surfaces about the first blackboard body, the second blackboard includes second blackboard body and sliding block, and is a plurality of the sliding block sets up second blackboard body inboard surface, the sliding block with sliding tray sliding fit, it includes fixed block and electromagnetism slide rail, two to erase the device the fixed block sets up relatively second blackboard body upper end front side surface, electromagnetism slide rail both ends respectively with two the inboard surface of fixed block is connected, cleaning device includes chalk dust collecting vat, chalk dust collecting vat sets up the relative front side surface of second blackboard body.
Further, first blackboard includes touch display screen, shift knob, installation piece, mounting hole and link, touch display screen sets up first blackboard body front side surface, shift knob sets up first blackboard body upper end front side surface.
Further, the installation piece sets up first blackboard body rear side surface, and a plurality of the mounting hole sets up the installation piece surface, two the link sets up relatively the installation piece upper surface.
Further, the second blackboard comprises a writing panel, a chalk containing box, a lamp holder, a lamp post and an illuminating lamp, the writing panel is arranged on the front side surface of the second blackboard body, and the chalk containing box is arranged on the upper surface of the right side of the chalk dust collecting groove.
Further, the lamp stand sets up second blackboard body upper surface, the light with the lamp stand passes through the lamp pole is connected.
Further, the erasing device comprises an electromagnetic sliding block and a blackboard eraser, one end of the blackboard eraser is connected with the electromagnetic sliding block, and the electromagnetic sliding block is in sliding fit with the electromagnetic sliding rail.
Further, cleaning device includes mounting panel, suction box and dust absorption pipe, the mounting panel sets up second blackboard body outside surface, the suction box sets up the mounting panel upper surface, dust absorption pipe one end is connected the suction box, the other end is connected chalk dust collecting vat lower surface.
The invention has the following beneficial effects:
(1) according to the invention, the sliding block is matched with the sliding groove in a sliding manner, the left and right second blackboard bodies can be conveniently controlled to slide relative to the first blackboard body, the first blackboard body can be conveniently stored into the second blackboard body, when multimedia teaching is required, the left and right second blackboard bodies slide towards two sides under the action of the sliding block, the first blackboard body is displayed, multimedia teaching can be conveniently carried out while writing on blackboard writing, the teaching quality and the practicability of the device are greatly improved, meanwhile, the lighting device is arranged on the upper surface of the second blackboard body, the practicability of the writing process of blackboard writing is greatly improved, the chalk storage box is convenient for storing and taking chalks, and the teaching operation of teachers is greatly facilitated.
(2) According to the blackboard eraser, the electromagnetic sliding block is in sliding fit with the electromagnetic sliding rail, so that the blackboard eraser is driven to reciprocate on the surface of the writing panel, the blackboard writing on the surface of the writing panel is erased, the manpower input of manual erasing is saved, and the phenomenon that personnel inhale chalk dust in the manual erasing process is avoided.
(3) The middle chalk dust collecting tank is convenient for directly collecting the chalk dust falling after being wiped by the blackboard eraser, and meanwhile, the dust collecting tank is matched with the dust suction box and the dust suction pipe to adsorb the falling chalk dust in the wiping process, so that the chalk dust is effectively prevented from flying, the dust pollution to the teaching environment is avoided, the cleanness of the blackboard in the using process is greatly improved, and the workload of manually wiping the blackboard is reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a rear view of the present invention;
FIG. 4 is a cross-sectional view of the present invention;
FIG. 5 is a partial schematic view of a front view of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
100-a first blackboard; 200-a second blackboard; 300-an erasing device; 400-a cleaning device; 110-a first blackboard body; 120-a sliding groove; 130-touch display screen; 140-a switch button; 150-a mounting block; 160-mounting holes; 170-hanging ring; 210-a second blackboard body; 220-a slider; 230-a writing panel; 240-chalk placing box; 250-a lamp holder; 260-lamp pole; 270-lighting lamps; 310-fixed block; 320-an electromagnetic sliding rail; 330-electromagnetic slider; 340-blackboard eraser; 410-chalk dust collection tank; 420-a mounting plate; 430-dust suction box; 440-suction pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 to 5, the present invention is an erasing and cleaning device for an intelligent blackboard, including a first blackboard 100, a second blackboard 200, an erasing device 300 and a cleaning device 400, wherein the first blackboard 100 is disposed inside the second blackboard 200, the erasing device 300 is disposed on the front side surface of the second blackboard 200, and the cleaning device 400 is disposed on the surface of the second blackboard 200;
the first blackboard 100 comprises a first blackboard body 110 and sliding grooves 120, the sliding grooves 120 are respectively arranged on the upper surface, the lower surface, the front surface and the rear surface of the first blackboard body 110, the second blackboard 200 comprises a second blackboard body 210 and sliding blocks 220, the sliding blocks 220 are arranged on the inner side surface of the second blackboard body 210, the sliding blocks 220 are in sliding fit with the sliding grooves 120, the erasing device 300 comprises fixed blocks 310 and electromagnetic sliding rails 320, the two fixed blocks 310 are oppositely arranged on the front side surface of the upper end of the second blackboard body 210, two ends of the electromagnetic sliding rails 320 are respectively connected with the inner side surfaces of the two fixed blocks 310, the cleaning device 400 comprises a chalk dust collecting groove 410, and the chalk dust collecting groove 410 is arranged on the front side surface of the second blackboard body 210.
Specifically, first blackboard 100 includes touch display screen 130, shift knob 140, installation piece 150, mounting hole 160 and link 170, and touch display screen 130 sets up at first blackboard body 110 front side surface, and shift knob 140 sets up at first blackboard body 110 upper end front side surface, and the teaching in-process of being convenient for develops multimedia teaching through touch display screen 130 to improve the teaching effect, reached the purpose that improves the device practicality.
Specifically, the mounting block 150 is arranged on the rear side surface of the first blackboard body 110, the mounting holes 160 are arranged on the surface of the mounting block 150, the two hanging rings 170 are oppositely arranged on the upper surface of the mounting block 150, the mounting of the blackboard is greatly facilitated through the mounting holes 160, and meanwhile, the stability and the safety of the device after being mounted are improved by matching with the hanging rings 170.
Specifically, second blackboard 200 is including writing panel 230, box 240 is placed to the chalk, lamp stand 250, lamp pole 260 and light 270, writing panel 230 sets up at second blackboard body 210 front side surface, the chalk is placed box 240 and is set up at chalk dust collecting vat 410 right side upper surface, sliding fit through sliding block 220 and sliding tray 120, realize that left and right sides second blackboard body 210 all can slide first blackboard body 110 relatively, made things convenient for and accomodate into second blackboard body 210 inside with first blackboard body 110, the area occupied of blackboard has been reduced greatly, and the practicality of blackboard has been improved, the chalk is placed box 240 and is made things convenient for depositing of chalk to take and take simultaneously, the use of blackboard has been made things convenient for greatly.
Specifically, lamp stand 250 sets up at second blackboard body 210 upper surface, and light 270 passes through the lamp pole 260 with lamp stand 250 to be connected, is convenient for be suitable for the use under the various light condition through light 270, has improved the practicality of blackboard greatly.
Specifically, the erasing device 300 includes an electromagnetic slider 330 and a blackboard eraser 340, one end of the blackboard eraser 340 is connected with the electromagnetic slider 330, the electromagnetic slider 330 is in sliding fit with the electromagnetic sliding rail 320, and the blackboard eraser 340 is driven to reciprocate on the surface of the writing panel 230 through the sliding fit of the electromagnetic slider 330 and the electromagnetic sliding rail 320, so that writing on the surface of the writing panel 230 is erased, the manpower input for manual erasing is saved, and the phenomenon that a person inhales chalk dust in the manual erasing process is avoided.
Specifically, cleaning device 400 includes mounting panel 420, dust suction box 430 and dust absorption pipe 440, mounting panel 420 sets up at second blackboard body 210 outside surface, dust suction box 430 sets up at mounting panel 420 upper surface, dust suction box 430 is connected to dust absorption pipe 440 one end, the chalk dust collecting vat 410 lower surface is connected to the other end, the chalk dust that drops is cleaned to blackboard eraser 340 through chalk dust collecting vat 410 is convenient for directly collect, cooperate dust suction box 430 and dust absorption pipe 440 to adsorb the chalk dust that drops in-process of cleaning simultaneously, effectively prevent the chalk dust from flying upward, greatly increased the cleaning nature in the blackboard use, and reduced the artificial work burden of cleaning the blackboard.
The working principle is as follows: according to the invention, through the sliding fit of the sliding block 220 and the sliding groove 120, the second blackboard bodies 210 on the left and right sides can slide relative to the first blackboard body 110, when multimedia teaching is required, the second blackboard bodies 210 on the left and right sides slide towards two sides under the action of the sliding block 220, the first blackboard body 110 is displayed, otherwise, relative sliding is carried out, the first blackboard body 110 is accommodated into the two second blackboard bodies 210, the chalk accommodating box 240 is convenient for storing and taking chalks, when the blackboard writing on the surface of the writing panel 230 is required to be erased, the blackboard writing on the surface of the writing panel 230 is driven to reciprocate on the surface of the writing panel 230 through the sliding fit of the electromagnetic slider 330 and the electromagnetic sliding rail 320, the blackboard writing on the surface of the writing panel 230 is erased, the chalk dust collecting groove 410 is convenient for directly collecting the chalk dust falling in the erasing process of the blackboard eraser 340, and the dust collecting box 430 and the dust collecting pipe 440 are matched to absorb the chalk dust falling in, effectively preventing the chalk dust from flying and greatly saving the manpower input of manual wiping.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a clean device that erases for wisdom blackboard, includes first blackboard (100), second blackboard (200), erases device (300) and clean device (400), its characterized in that: the first blackboard (100) is arranged inside the second blackboard (200), the erasing device (300) is arranged on the front side surface of the second blackboard (200), and the cleaning device (400) is arranged on the surface of the second blackboard (200);
first blackboard (100) includes first blackboard body (110) and sliding tray (120), and is a plurality of sliding tray (120) sets up respectively two surfaces and front and back two surfaces about first blackboard body (110), second blackboard (200) include second blackboard body (210) and sliding block (220), and is a plurality of sliding block (220) set up second blackboard body (210) inboard surface, sliding block (220) with sliding tray (120) sliding fit, it includes fixed block (310) and electromagnetism slide rail (320) to erase device (300), two fixed block (310) sets up relatively second blackboard body (210) upper end front side surface, electromagnetism slide rail (320) both ends respectively with two fixed block (310) inboard surface is connected, cleaning device (400) includes chalk dust collecting vat (410), the chalk dust collecting groove (410) is arranged on the surface of the second blackboard body (210) opposite to the front side surface.
2. The erasing and cleaning device for the intelligent blackboard according to claim 1, wherein the first blackboard (100) includes a touch display screen (130), a switch button (140), a mounting block (150), a mounting hole (160) and a hanging ring (170), the touch display screen (130) is arranged on the front side surface of the first blackboard body (110), and the switch button (140) is arranged on the front side surface of the upper end of the first blackboard body (110).
3. The erasing and cleaning device for intelligent blackboard according to claim 1, wherein the mounting block (150) is installed on the rear side surface of the first blackboard body (110), a plurality of mounting holes (160) are installed on the surface of the mounting block (150), and two hanging rings (170) are installed on the upper surface of the mounting block (150) oppositely.
4. The erasing cleaning device for the intelligent blackboard according to claim 1, wherein the second blackboard (200) includes a writing panel (230), a chalk placing box (240), a lamp holder (250), a lamp post (260) and a lighting lamp (270), the writing panel (230) is disposed on the front side surface of the second blackboard body (210), and the chalk placing box (240) is disposed on the upper surface of the right side of the chalk dust collecting groove (410).
5. The erasing and cleaning device for the intelligent blackboard according to claim 1, wherein the lamp holder (250) is disposed on the upper surface of the second blackboard body (210), and the illuminating lamp (270) is connected with the lamp holder (250) through the lamp post (260).
6. An erasing and cleaning device for an intelligent blackboard according to claim 1, wherein the erasing device (300) includes an electromagnetic slider (330) and a blackboard eraser (340), one end of the blackboard eraser (340) is connected with the electromagnetic slider (330), and the electromagnetic slider (330) is slidably fitted with the electromagnetic sliding rail (320).
7. The erasing and cleaning device for the intelligent blackboard of claim 1, wherein the cleaning device (400) includes a mounting plate (420), a dust suction box (430) and a dust suction pipe (440), the mounting plate (420) is disposed on the outer surface of the second blackboard body (210), the dust suction box (430) is disposed on the upper surface of the mounting plate (420), one end of the dust suction pipe (440) is connected to the dust suction box (430), and the other end of the dust suction pipe is connected to the lower surface of the chalk dust collecting groove (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456670.6A CN112497973A (en) | 2020-12-11 | 2020-12-11 | A wipe cleaning device for wisdom blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456670.6A CN112497973A (en) | 2020-12-11 | 2020-12-11 | A wipe cleaning device for wisdom blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112497973A true CN112497973A (en) | 2021-03-16 |
Family
ID=74973645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011456670.6A Withdrawn CN112497973A (en) | 2020-12-11 | 2020-12-11 | A wipe cleaning device for wisdom blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112497973A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178101A (en) * | 2021-04-21 | 2021-07-27 | 临沂市拓普网络股份有限公司 | Teaching blackboard based on wisdom classroom |
| CN113895171A (en) * | 2021-10-21 | 2022-01-07 | 桃源县漆河镇中学 | Absorption formula raise dust suppression type blackboard eraser |
| CN114399928A (en) * | 2022-01-20 | 2022-04-26 | 关海燕 | Wisdom blackboard with heat radiation structure |
| CN114537019A (en) * | 2022-02-23 | 2022-05-27 | 广西中科云创智能科技有限公司 | School uses intelligent multimedia teaching equipment |
| CN114537021A (en) * | 2022-03-05 | 2022-05-27 | 林俊楚 | Touch teaching blackboard of safety ring protects |
| CN116373490A (en) * | 2023-04-20 | 2023-07-04 | 广东心里程教育集团有限公司 | Adjustable blackboard convenient to use |
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| WO2015043863A1 (en) * | 2013-09-25 | 2015-04-02 | Arcelik Anonim Sirketi | An electronic educational device comprising a proximity sensor and the control method of the same |
| CN108790492A (en) * | 2018-05-30 | 2018-11-13 | 杨先平 | A kind of teaching apparatus for mathematics has the blackboard for education of dust-absorbing function |
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| CN208615565U (en) * | 2018-01-05 | 2019-03-19 | 李刚 | A kind of blackboard for education with sectoring function |
| CN109572280A (en) * | 2017-09-28 | 2019-04-05 | 鄄城上德仪表有限公司 | A kind of multifunction magnetic blackboard |
| CN210337372U (en) * | 2019-04-28 | 2020-04-17 | 重庆电子工程职业学院 | Electronic blackboard display device for multimedia teaching |
| CN211906555U (en) * | 2020-03-24 | 2020-11-10 | 绥化学院 | Multifunctional intelligent learning book teaching board for mathematics major |
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| WO2015043863A1 (en) * | 2013-09-25 | 2015-04-02 | Arcelik Anonim Sirketi | An electronic educational device comprising a proximity sensor and the control method of the same |
| CN109572280A (en) * | 2017-09-28 | 2019-04-05 | 鄄城上德仪表有限公司 | A kind of multifunction magnetic blackboard |
| CN208584996U (en) * | 2017-10-10 | 2019-03-08 | 韩国瑞 | A kind of education and instruction display board |
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| CN210337372U (en) * | 2019-04-28 | 2020-04-17 | 重庆电子工程职业学院 | Electronic blackboard display device for multimedia teaching |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178101A (en) * | 2021-04-21 | 2021-07-27 | 临沂市拓普网络股份有限公司 | Teaching blackboard based on wisdom classroom |
| CN113895171A (en) * | 2021-10-21 | 2022-01-07 | 桃源县漆河镇中学 | Absorption formula raise dust suppression type blackboard eraser |
| CN114399928A (en) * | 2022-01-20 | 2022-04-26 | 关海燕 | Wisdom blackboard with heat radiation structure |
| CN114537019A (en) * | 2022-02-23 | 2022-05-27 | 广西中科云创智能科技有限公司 | School uses intelligent multimedia teaching equipment |
| CN114537021A (en) * | 2022-03-05 | 2022-05-27 | 林俊楚 | Touch teaching blackboard of safety ring protects |
| CN116373490A (en) * | 2023-04-20 | 2023-07-04 | 广东心里程教育集团有限公司 | Adjustable blackboard convenient to use |
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Application publication date: 20210316 |