CN106965603A - One kind teaching dust exhaust apparatus - Google Patents
One kind teaching dust exhaust apparatus Download PDFInfo
- Publication number
- CN106965603A CN106965603A CN201710285911.7A CN201710285911A CN106965603A CN 106965603 A CN106965603 A CN 106965603A CN 201710285911 A CN201710285911 A CN 201710285911A CN 106965603 A CN106965603 A CN 106965603A
- Authority
- CN
- China
- Prior art keywords
- dust
- motor
- dust catcher
- connection
- blackboard
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- 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
Abstract
The present invention proposes a kind of teaching dust exhaust apparatus, solves teacher in the prior art and easily sucks chalk dust, the problem of larger harm is caused to body.The present invention includes upper dust catcher, side dust catcher and lower dust catcher, and upper dust catcher is located at the top of blackboard, and side dust catcher is located at the both sides of blackboard, and lower dust catcher is located at the lower section of blackboard.The present invention has following beneficial effect：Chalk dust is sucked into dust catcher and collected, contact of the teacher to dust, the harm that reduction dust is caused to teacher's body is reduced；Intelligence degree is high, matches with existing teaching equipment；Shading and lighting device are set, it is to avoid blackboard reflective light or light are excessively dark.
Description
Technical field
The present invention relates to teaching equipment, a kind of teaching dust exhaust apparatus is particularly related to.
Background technology
Current school teacher attends class still is writing writing on the blackboard using chalk on blackboard, and many is had when writing is wiped with blackboard eraser
Chalk foam dust, chalk ash composition is a kind of white depositions of calcium sulfate, it is not easy to be decomposed, particle is bigger than dust.Powder
Harm of the pen ash to the lung of teacher is most commonly seen, and in teaching process, chalk dust is easy to be inhaled into lung, and majority is delayed at lung
In bubble, by a series of stimulation, chemistry and immune effect, just lung can be caused to lose, including inflammation in respiratory system and lung
Ventilatory function declines, and common PUD D has：Chronic, acute pneumonia, lung cancer, pneumoconiosis etc., contain titanium dioxide in chalk dust
Silicon, is inhaled into lung, lung dissociate dioxide-containing silica 1 percent pulmonary fibrosis formed above dust so that
Alveolar fibrosis, causes lung's respiratory function decline, so the life-span of people can be shortened by sucking excessive chalk dust for a long time.
The content of the invention
The present invention proposes a kind of teaching dust exhaust apparatus, solves teacher in the prior art and easily sucks chalk dust, to body
The problem of causing larger harm.
The technical proposal of the invention is realized in this way：One kind teaching dust exhaust apparatus, including upper dust catcher, side dust catcher and
Lower dust catcher, upper dust catcher is located at the top of blackboard, and side dust catcher is located at the both sides of blackboard, and lower dust catcher is located under blackboard
Side；
Described upper dust catcher is provided with air inlet, and air inlet is connected with gas hood, and gas hood is connected with gas outlet, air inlet and outlet
Be equipped with air filtering plate on mouthful, dust-leading board, fan blade, dust-filtering plate and dust sucting motor be sequentially provided with airintake direction in gas hood, gas hood with
Dust collecting trough is provided between dust-leading board, dust collecting trough and the first collecting plate coordinate, the top of dust collecting trough, which is provided with deep bead, deep bead, opens
There is filter opening, fan blade is connected with dust sucting motor；
Described side dust catcher includes air inlet, and air inlet is connected with gas hood, and gas hood is connected with gas outlet, air inlet and gas outlet
On be equipped with air filtering plate, is sequentially provided with fan blade, dust-filtering plate and dust sucting motor in airintake direction in gas hood, the both sides of fan blade are provided with gear
Filter opening is provided with aerofoil, deep bead, the lower section of fan blade is provided with dust collecting trough, and dust collecting trough and the second collecting plate coordinate, fan blade and dust suction
Motor connection；
Described lower dust catcher includes air inlet, and air inlet is connected with gas hood, and gas hood is connected with gas outlet, air inlet and gas outlet
On be equipped with air filtering plate, is sequentially provided with fan blade, dust-leading board, dust-filtering plate and dust sucting motor in airintake direction in gas hood, gas hood is with leading
Dust collecting trough is provided between dirt plate, dust collecting trough and the first collecting plate coordinate, the top of dust collecting trough, which is provided with deep bead, deep bead, to be provided with
Filter opening, fan blade is connected with dust sucting motor.
The side of described side dust catcher is provided with display screen, control panel and loudspeaker, display screen and loudspeaker with control
Device connection processed, controller is connected with control panel, dust sucting motor.
The first motor and the second motor are provided with described upper dust catcher, the first motor is connected with the first spool, the first volume
Axle is provided with projection screen, and the second motor is connected with the second spool, and the second spool is provided with screening dirt curtain；First motor and the second electricity
Machine is connected with controller.
Described side dust catcher is provided with light-shield cover, unrestrained light lamp and light sensing, and light-shield cover is interior to be provided with the 3rd motor and be in the light
Plate, the 3rd motor is connected with light barrier；3rd motor, unrestrained light lamp and light sensing are connected with controller.
The top of described blackboard is provided with signal receiver, and signal receiver is connected with controller, signal receiver and letter
Number transmitter coordinates, and signal projector is located in blackboard eraser, and gravity sensor is provided with blackboard eraser.
The present invention has following beneficial effect：Chalk dust is sucked into dust catcher and collected, teacher is reduced to powder
The contact of dirt, the harm that reduction dust is caused to teacher's body；Intelligence degree is high, matches with existing teaching equipment；Set
Shading and lighting device, it is to avoid blackboard reflective light or light are excessively dark.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is front view of the present invention.
Fig. 2 is Fig. 1 A-A direction views.
Fig. 3 is Fig. 1 B-B direction view.
Fig. 4 is upper deduster front view.
Fig. 5 is side deduster top view.
Fig. 6 is side deduster front view.
Fig. 7 is lower deduster front view.
Fig. 8 is the first collecting plate structure chart.
Fig. 9 is the second collecting plate structure chart.
Figure 10 is wiping blackboard structure figure.
In figure：Dust catcher under 1- ground, 2- metopes, the upper dust catchers of 3-, 4- sides dust catcher, 5-, 6- blackboards, 7- display screens,
8- control panels, the motors of 9- first, the spools of 10- first, 11- projection screens, the motors of 12- second, the spools of 13- second, 14- hides dirt
Curtain, 15- gas hoods, 16- air inlets, 17- air filtering plates, 18- dust-leading boards, 19- dust collecting troughs, 20- deep beads, 21- filter openings, 22- filter dirt
Plate, 23- dust sucting motors, 24- fan blades, the collecting plates of 25- first, the collecting plates of 26- second, 27- blackboard erasers, 28- gravity sensors,
29- signal projectors, 30- signal receivers, 31- loudspeakers, the motors of 32- the 3rd, 33- light barriers, 34- overflows light lamp, and 35- is in the light
Cover, 36- gas outlets.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not paid
Embodiment, belongs to the scope of protection of the invention.
As shown in Fig. 1 ~ 10, the present invention proposes a kind of teaching dust exhaust apparatus, including upper dust catcher 3, the and of side dust catcher 4
Lower dust catcher 5, upper dust catcher 3 is located at the top of blackboard 6, and side dust catcher 4 is located at the both sides of blackboard 6, and lower dust catcher 5 is located at blackboard
6 lower section；
Described upper dust catcher 3 is provided with air inlet 16, and air inlet 16 is connected with gas hood 15, and gas hood 15 is connected with gas outlet 36,
Be equipped with air inlet 16 and gas outlet 17 in air filtering plate 17, gas hood 15 airintake direction be sequentially provided with dust-leading board 18, fan blade 24,
Dust-filtering plate 22 and dust sucting motor 23, are provided with dust collecting trough 19, the collecting plate 25 of dust collecting trough 19 and first between gas hood 15 and dust-leading board 18
Coordinate, the top of dust collecting trough 19, which is provided with deep bead 20, deep bead 20, is provided with filter opening 21, and fan blade 24 is connected with dust sucting motor 23；
Described side dust catcher 4 includes air inlet 16, and air inlet 16 is connected with gas hood 15, and gas hood 15 is connected with gas outlet 36, is entered
Gas port 16 is sequentially provided with fan blade 24, the and of dust-filtering plate 22 with being equipped with gas outlet 17 in air filtering plate 17, gas hood 15 in airintake direction
Dust sucting motor 23, the both sides of fan blade 24, which are provided with deep bead 20, deep bead 20, is provided with filter opening 21, and the lower section of fan blade 24 is provided with dust
Groove 19, dust collecting trough 19 coordinates with the second collecting plate 26, and fan blade 24 is connected with dust sucting motor 23；
Described lower dust catcher 5 includes air inlet 16, and air inlet 16 is connected with gas hood 15, and gas hood 15 is connected with gas outlet 36, is entered
Gas port 16 is sequentially provided with fan blade 24, dust-leading board 18, filter with being equipped with gas outlet 17 in air filtering plate 17, gas hood 15 in airintake direction
Dirt plate 22 and dust sucting motor 23, are provided with dust collecting trough 19 between gas hood 15 and dust-leading board 18, dust collecting trough 19 is matched somebody with somebody with the first collecting plate 25
Close, the top of dust collecting trough 19, which is provided with deep bead 20, deep bead 20, is provided with filter opening 21, and fan blade 24 is connected with dust sucting motor 23.
The side of described side dust catcher 4 is provided with display screen 7, control panel 8 and loudspeaker 31, display screen 7 and loudspeaker
31 are connected with controller, and controller is connected with control panel 8, dust sucting motor 23.
The first motor 9 and the second motor 12 are provided with described upper dust catcher 3, the first motor 9 is connected with the first spool 10,
First spool 10 is provided with projection screen 11, and the second motor 12 is connected with the second spool 13, and the second spool 13 is provided with screening dirt curtain
14；First motor 9 and the second motor 12 are connected with controller.
Described side dust catcher 4 is provided with light-shield cover 35, unrestrained light lamp 34 and light sensing, and light-shield cover 35 is interior to be provided with the 3rd motor
32 and light barrier 33, the 3rd motor 32 is connected with light barrier 33；3rd motor 32, unrestrained light lamp 34 and light sensing connect with controller
Connect.
The top of described blackboard 6 is provided with signal receiver 30, and signal receiver 30 is connected with controller, signal receiver
30 coordinate with signal projector 29, and signal projector 29 is located in blackboard eraser 27, and gravity sensor 28 is provided with blackboard eraser 27.
Operation instruction of the present invention：Side dust catcher 3 is installed on ground 1, and upper dust catcher 3 and lower dust catcher 5 are installed on two
Between side dust catcher 3, lower dust catcher 5 is slightly above ground 1, and upper dust catcher 3, side dust catcher 4 and lower dust catcher 5 connect with metope 2
Touch and blackboard 6 is enclosed in centre, when with 27 blackboard wiping 6 of blackboard eraser, many chalk dusts can be kicked up, now controller control
Dust sucting motor 23 processed is started working, and dust sucting motor 23 drives fan blade 24 to rotate, and the air with chalk dust is sucked into gas hood 15, empty
Gas is rotated at deep bead 20, and chalk dust is gradually assembled and fallen into dust collecting trough 19, and air is discharged under the filtering of dust-filtering plate 22
Gas hood 15, air filtering plate 17 prevents the object of large volume from entering the destruction fan blade 24 of gas inlet cover 15, and the air filtering plate 17 of lower dust catcher 5 rises simultaneously
It is provided with the dust collecting trough 19 of the effect of support, upper dust catcher 3 and lower dust catcher 5 before the first collecting plate 25, the first collecting plate 25
The ring-type to be engaged with dust-leading board 18 is held, the rear end of the first collecting plate 25 has been the baffle plate and handle of sealing process, the first collection
Dirt plate 25 can release from upper dust catcher 3 and lower dust catcher 5, the chalk dust gathered in plate be cleared up, the collection of side dust catcher 4
The second collecting plate 26 is provided with dirt groove 19, the front end of the second collecting plate 26 is the strip being engaged with dust collecting trough 19, the second collection
The rear end of dirt plate 26 has been the baffle plate and handle of sealing process, and the second collecting plate 26 can release from side dust catcher 4, to collecting in plate
Poly- chalk dust is cleared up.
The side of side dust catcher 4 is provided with display screen 7, control panel 8 and loudspeaker 31, display screen 7 and shows time, date
With course arrangement, control panel 8 realizes and adjusted that controller is broadcast according to the time by loudspeaker 31 by controller to display screen 7
The sound such as the tinkle of bells after class or multimedia, broadcast is put, while being adjustably controlled panel 8, the control controller of control panel 8 is right
Dust sucting motor 23 is controlled.
The control controller of control panel 8 is adjusted, controller controls the first motor 9 to rotate, and the first motor 9 is by the first spool 10
On projection screen 11 pack up or put down, be combined with multimedia teaching facility, controller controls the second motor 12 to rotate, the
Screening dirt cloth 14 on second spool 13 is packed up or put down by two motors 12, when the dust catcher of blackboard wiping 6 works, and is formed
With respect to one confined space, with more preferable pick-up performance.
When in use, light outside window can be impinged upon on blackboard 6 blackboard 6, when light is too strong, can make blackboard 6
Generation is reflective, or when night, the lighting in classroom is not enough, and the glazed thread of blackboard 6 is dim, now passes through light sensing
The intensity signal of the blackboard left and right sides is detected, and passes to controller, when light is too strong, controller controls 32 turns of the 3rd motor
Dynamic, the 3rd motor 32 drives light barrier 33 to stretch into side dust catcher 4, and light outside window is blocked, when rather dark, controls
The unrestrained light lamp 34 of device control is opened, and is that blackboard 6 provides illumination.
During 27 blackboard wiping 6 of blackboard eraser, gravity sensor 28 detects the motor message of blackboard eraser 27, is launched by signal
Device 29 is sent to signal receiver 30, and the signal received is passed to controller, controller control dust catcher by signal receiver 30
Working condition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (5)
1. one kind teaching dust exhaust apparatus, it is characterised in that：Including upper dust catcher（3）, side dust catcher（4）With lower dust catcher（5）, on
Dust catcher（3）Located at blackboard（6）Top, side dust catcher（4）Positioned at blackboard（6）Both sides, lower dust catcher（5）Located at blackboard
（6）Lower section；
Described upper dust catcher（3）It is provided with air inlet（16）, air inlet（16）With gas hood（15）Connection, gas hood（15）With outlet
Mouthful（36）Connection, air inlet（16）With gas outlet（36）On be equipped with air filtering plate（17）, gas hood（15）Inherent airintake direction is successively
Provided with dust-leading board（18）, fan blade（24）, dust-filtering plate（22）And dust sucting motor（23）, gas hood（15）With dust-leading board（18）Between be provided with
Dust collecting trough（19）, dust collecting trough（19）With the first collecting plate（25）Coordinate, dust collecting trough（19）Top be provided with deep bead（20）, keep out the wind
Plate（20）On be provided with filter opening（21）, fan blade（24）With dust sucting motor（23）Connection；
Described side dust catcher（4）Including air inlet（16）, air inlet（16）With gas hood（15）Connection, gas hood（15）With gas outlet
（36）Connection, air inlet（16）With gas outlet（36）On be equipped with air filtering plate（17）, gas hood（15）Inherent airintake direction is set successively
There is fan blade（24）, dust-filtering plate（22）And dust sucting motor（23）, fan blade（24）Both sides be provided with deep bead（20）, deep bead（20）On
It is provided with filter opening（21）, fan blade（24）Lower section be provided with dust collecting trough（19）, dust collecting trough（19）With the second collecting plate（26）Coordinate, fan blade
（24）With dust sucting motor（23）Connection；
Described lower dust catcher（5）Including air inlet（16）, air inlet（16）With gas hood（15）Connection, gas hood（15）With gas outlet
（36）Connection, air inlet（16）With gas outlet（36）On be equipped with air filtering plate（17）, gas hood（15）Inherent airintake direction is set successively
There is fan blade（24）, dust-leading board（18）, dust-filtering plate（22）And dust sucting motor（23）, gas hood（15）With dust-leading board（18）Between provided with collection
Dirt groove（19）, dust collecting trough（19）With the first collecting plate（25）Coordinate, dust collecting trough（19）Top be provided with deep bead（20）, deep bead
（20）On be provided with filter opening（21）, fan blade（24）With dust sucting motor（23）Connection.
2. teaching dust exhaust apparatus according to claim 1, it is characterised in that：Described side dust catcher（4）Side be provided with
Display screen（7）, control panel（8）And loudspeaker（31）, display screen（7）And loudspeaker（31）It is connected with controller, controller
With control panel（8）, dust sucting motor（23）Connection.
3. teaching dust exhaust apparatus according to claim 2, it is characterised in that：Described upper dust catcher（3）Inside it is provided with first
Motor（9）With the second motor（12）, the first motor（9）With the first spool（10）Connection, the first spool（10）It is provided with projection screen
Cloth（11）, the second motor（12）With the second spool（13）Connection, the second spool（13）Provided with screening dirt curtain（14）；First motor
（9）With the second motor（12）It is connected with controller.
4. teaching dust exhaust apparatus according to claim 2, it is characterised in that：Described side dust catcher（4）It is provided with and is in the light
Cover（35）, unrestrained light lamp（34）And light sensing, light-shield cover（35）Inside it is provided with the 3rd motor（32）And light barrier（33）, the 3rd motor
（32）With light barrier（33）Connection；3rd motor（32）, unrestrained light lamp（34）It is connected with light sensing with controller.
5. teaching dust exhaust apparatus according to claim 2, it is characterised in that：Described blackboard（6）Top be provided with signal
Receiver（30）, signal receiver（30）It is connected with controller, signal receiver（30）With signal projector（29）Coordinate, signal
Transmitter（29）It is located at blackboard eraser（27）It is interior, blackboard eraser（27）It is interior to be provided with gravity sensor（28）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285911.7A CN106965603B (en) | 2017-04-27 | 2017-04-27 | One kind teaching dust exhaust apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285911.7A CN106965603B (en) | 2017-04-27 | 2017-04-27 | One kind teaching dust exhaust apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106965603A true CN106965603A (en) | 2017-07-21 |
| CN106965603B CN106965603B (en) | 2018-04-06 |
Family
ID=59332746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710285911.7A Active CN106965603B (en) | 2017-04-27 | 2017-04-27 | One kind teaching dust exhaust apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106965603B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944190A (en) * | 2018-07-20 | 2018-12-07 | 佛山科枫文化传播有限公司 | A kind of education auxiliary blackboard |
| CN114103530A (en) * | 2021-12-21 | 2022-03-01 | 河北华发教育科技股份有限公司 | Intelligent blackboard with interchangeable main screen and auxiliary screen |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214796300U (en) * | 2021-06-25 | 2021-11-19 | 郑州航空工业管理学院 | English teaching auxiliary device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079694A (en) * | 1993-04-03 | 1993-12-22 | 刘荣武 | New auto-erase blackboard |
| CN2651006Y (en) * | 2003-08-26 | 2004-10-27 | 兰润发 | Dustproof device of teaching board |
| CN2680470Y (en) * | 2003-08-08 | 2005-02-23 | 柯荣贵 | Dust-suction type black/white board |
| US20080062631A1 (en) * | 2006-09-07 | 2008-03-13 | Dilip Bhavnani | Multi-function desktop assembly |
| CN201124671Y (en) * | 2007-12-10 | 2008-10-01 | 王足旭 | Dust-less blackboard |
| CN103192629A (en) * | 2013-03-14 | 2013-07-10 | 于希萌 | Dust-recovery writing device |
| CN203438719U (en) * | 2013-08-08 | 2014-02-19 | 中国石油大学(华东) | Blackboard dust removing system |
| CN104417187A (en) * | 2013-08-29 | 2015-03-18 | 李衍鼎 | Dust collection blackboard slot |
| CN204398650U (en) * | 2014-12-02 | 2015-06-17 | 无锡市南长区科技创业服务中心 | A kind of blackboard with groove for collecting chalk dust |
| CN204845246U (en) * | 2015-07-06 | 2015-12-09 | 南京工程学院 | Dust removal lift blackboard |
| CN205112753U (en) * | 2015-11-23 | 2016-03-30 | 马春华 | Electronic dust absorption illumination blackboard |
-
2017
- 2017-04-27 CN CN201710285911.7A patent/CN106965603B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079694A (en) * | 1993-04-03 | 1993-12-22 | 刘荣武 | New auto-erase blackboard |
| CN2680470Y (en) * | 2003-08-08 | 2005-02-23 | 柯荣贵 | Dust-suction type black/white board |
| CN2651006Y (en) * | 2003-08-26 | 2004-10-27 | 兰润发 | Dustproof device of teaching board |
| US20080062631A1 (en) * | 2006-09-07 | 2008-03-13 | Dilip Bhavnani | Multi-function desktop assembly |
| CN201124671Y (en) * | 2007-12-10 | 2008-10-01 | 王足旭 | Dust-less blackboard |
| CN103192629A (en) * | 2013-03-14 | 2013-07-10 | 于希萌 | Dust-recovery writing device |
| CN203438719U (en) * | 2013-08-08 | 2014-02-19 | 中国石油大学(华东) | Blackboard dust removing system |
| CN104417187A (en) * | 2013-08-29 | 2015-03-18 | 李衍鼎 | Dust collection blackboard slot |
| CN204398650U (en) * | 2014-12-02 | 2015-06-17 | 无锡市南长区科技创业服务中心 | A kind of blackboard with groove for collecting chalk dust |
| CN204845246U (en) * | 2015-07-06 | 2015-12-09 | 南京工程学院 | Dust removal lift blackboard |
| CN205112753U (en) * | 2015-11-23 | 2016-03-30 | 马春华 | Electronic dust absorption illumination blackboard |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944190A (en) * | 2018-07-20 | 2018-12-07 | 佛山科枫文化传播有限公司 | A kind of education auxiliary blackboard |
| CN114103530A (en) * | 2021-12-21 | 2022-03-01 | 河北华发教育科技股份有限公司 | Intelligent blackboard with interchangeable main screen and auxiliary screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106965603B (en) | 2018-04-06 |
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Effective date of registration: 20200715 Address after: 343100 Ji'an County, Jiangxi province Ji'an County North source village official village Tangshan natural village 21 Patentee after: Luo Jun Address before: Shangqiu City Suiyang District Cultural Road 476000 Henan province No. 16 Building No. 17 Patentee before: Hua Siqi |
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