CN114435007A - Intelligent computer technology display device - Google Patents
Intelligent computer technology display device Download PDFInfo
- Publication number
- CN114435007A CN114435007A CN202210289621.0A CN202210289621A CN114435007A CN 114435007 A CN114435007 A CN 114435007A CN 202210289621 A CN202210289621 A CN 202210289621A CN 114435007 A CN114435007 A CN 114435007A
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- base
- fixedly connected
- curtain
- display device
- computer technology
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- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 abstract 3
- 230000005389 magnetism Effects 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 241001422033 Thestylus Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
- B43L1/10—Writing surfaces thereof
-
- 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
- B43L1/08—Blackboards flexible
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Toys (AREA)
Abstract
The invention provides an intelligent computer technology display device, and relates to the field of technology display devices. This computer technology display device, including first part and second part, first part and second part are symmetrical structure, and all include the base, the upper end fixedly connected with sleeve of base, telescopic upper end extension is provided with the telescopic link, is provided with the curtain between first part and the second part, the curtain includes the flexbile membrane, the cavity has been laid to the inside of flexbile membrane, the inside packing of cavity has iron powder and white solution, one side distribution of flexbile membrane has a plurality of first coils, the upper end of base is provided with the handwriting pen, the handwriting pen includes the pen-holder, the strong magnetism nib of one end fixedly connected with of pen-holder, the inside of pen-holder is provided with the circuit board, the printing is provided with the antenna circuit on the circuit board, the lower part fixedly connected with lock mechanism of base. The invention is convenient to store and easy to write and clean.
Description
Technical Field
The invention relates to the technical field of technical display devices, in particular to an intelligent computer technical display device.
Background
The computer is commonly called as computer, is a modern electronic computing machine for high-speed computation, can perform numerical computation and logic computation, and also has the function of storage and memory. In the process of optimizing the production and manufacturing of the computer, computer technicians need to communicate with each other to carry out technical communication. A blackboard is generally used to introduce and guide computer technology.
The blackboard used in the existing meeting is large in size and cannot be folded, and occupies a large amount of space in a meeting room. Meanwhile, most of the existing blackboards adopt oil-based marking pens, the oil-based marking pens need to be erased, the use is inconvenient, and meanwhile, the marking pens are inadvertently stained on clothes.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an intelligent computer technology display device, which solves the problems that the intelligent computer technology display device cannot be folded and stored and is inconvenient to paint by adopting an oil marking pen.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an intelligent computer technology display device comprises a first component and a second component, wherein the first component and the second component are of symmetrical structures and respectively comprise a base, the upper end of the base is fixedly connected with a sleeve, the upper end of the sleeve extends to form a telescopic rod, a curtain is arranged between the first component and the second component, and the end part of the curtain is wound in the telescopic rod;
the curtain comprises a flexible film, wherein a cavity is arranged in the flexible film, iron powder and white solution are filled in the cavity, a plurality of first coils are distributed on one side of the flexible film, and a bottom film is coated on one side of each first coil;
the handwriting pen is arranged at the upper end of the base and comprises a pen holder, one end of the pen holder is fixedly connected with a strong magnetic pen point, a circuit board is arranged inside the pen holder, and an antenna circuit is printed on the circuit board;
the lower part fixedly connected with lock mechanism of base, lock mechanism includes the shell, the inside of shell is provided with the kelly, the middle part of kelly rotates to be connected in the inside of shell, the one end of kelly is provided with the latch.
Preferably, the base goes up the symmetry and slides and is provided with flexible cover, the one end fixedly connected with gyro wheel of flexible cover, the inside of gyro wheel is provided with in-wheel motor, the bottom of base is provided with the supporting wheel, supporting wheel and two gyro wheels are triangular distribution.
Preferably, the inside fixedly connected with first motor of base, the both ends of first motor all extend and are provided with first screw rod, and two first screw rods revolve to opposite, first screw rod and telescope tube screw-thread fit.
Preferably, the inside fixedly connected with second motor of telescopic, the upper end of second motor extends and is provided with the second screw rod, second screw rod and telescopic link screw-thread fit, telescopic inner wall is provided with the lug, lug sliding fit is in the spout that the telescopic link lower part set up.
Preferably, the inside fixedly connected with third motor of telescopic link, the upper end of third motor extends and is provided with the wind-up roll, the curtain rolling is on the wind-up roll.
Preferably, the one end both sides of kelly are fixedly connected with spring and magnet respectively, the inner wall of shell is supported to the other end of spring, the outside of magnet is provided with the second coil, the second coil is fixed in the inner wall of shell.
Preferably, the lateral wall of base and the upper portion lateral wall of telescopic link all are provided with a plurality of first infrared distance measuring sensors, the upper portion lateral wall of telescopic link is provided with the camera, the middle part lateral wall of telescopic link is provided with the infrared distance measuring sensor of second, the infrared distance measuring sensor of second is located the below of curtain.
Preferably, a key is arranged on one side of the pen holder and electrically connected with the circuit board, and a battery is arranged on the circuit board.
(III) advantageous effects
The invention provides an intelligent computer technology display device. The method has the following beneficial effects:
1. the invention has symmetrical design, can be stored and processed, and reduces the occupation of space.
2. According to the invention, the screen uses the iron powder and is matched with the handwriting pen to realize writing on the screen, and meanwhile, the writing content is quickly cleared through the coil on the screen and the antenna function on the handwriting pen.
3. The invention is provided with the buckling mechanism, realizes the fixed connection of the first component and the second component, has simple structure, can be electrically controlled, and realizes automatic operation by matching with other electrical elements.
4. The invention is provided with the first infrared distance measuring sensor, the second infrared distance measuring sensor and the camera, and is matched with the roller and other components, so that the intellectualization of the device can be improved, and the application scene of the device can be improved.
Drawings
FIG. 1 is a perspective view of the present invention in a folded state;
FIG. 2 is a perspective view of the present invention in an expanded state;
FIG. 3 is a schematic partial cross-sectional view of a curtain of the present invention;
FIG. 4 is a schematic cross-sectional view of a base of the present invention;
FIG. 5 is a cross-sectional view of the telescoping pole of the present invention;
FIG. 6 is a schematic view of the stylus of the present invention
FIG. 7 is a schematic view of a snapping mechanism of the present invention.
Wherein, 1, a first component; 2. a second component; 3. a first infrared ranging sensor; 4. a base; 5. a stylus pen; 6. a sleeve; 7. a telescopic rod; 8. a curtain; 9. a camera; 10. a fastening mechanism; 11. a support wheel; 12. a first motor; 13. a first screw; 14. a telescopic sleeve; 15. a roller; 16. a second motor; 17. a second screw; 18. a second infrared ranging sensor; 19. a third motor; 20. a wind-up roll;
51. a strong magnetic pen point; 52. a pen holder; 53. pressing a key; 54. a battery; 55. a circuit board; 81. a flexible film; 82. a cavity; 83. a first coil; 84. a base film; 101. a second coil; 102. a magnet; 103. a spring; 104. a housing; 105. a clamping rod; 106. and (6) clamping teeth.
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.
Example (b):
as shown in fig. 1 to 7, an embodiment of the present invention provides an intelligent computer technology display device, including a first component 1 and a second component 2, where the first component 1 and the second component 2 are of a symmetrical structure, and the first component 1 and the second component 2 can form a structure of a revolving body after being folded, which is beneficial to storage and processing of the device, and both include a base 4, a sleeve 6 is fixedly connected to an upper end of the base 4, an extension rod 7 is extended from an upper end of the sleeve 6, the extension rod 7 can be lifted from the sleeve 6, and can be adjusted according to a use requirement, a curtain 8 is disposed between the first component 1 and the second component 2, the curtain 8 is used for writing and displaying a computer technology, an end portion of the curtain 8 can be rolled in the extension rod 7, and the curtain 8 can be stored, so as to reduce space occupation.
The curtain 8 comprises a flexible film 81 for realizing the rolling of the curtain 8, a cavity 82 is arranged in the inner part of the flexible film 81, iron powder and white solution are filled in the cavity 82, the viscosity of the white solution is high, the distribution of the iron powder in the cavity 82 is controlled, the iron powder is used for displaying on the curtain 8, a plurality of first coils 83 are distributed on one side of the flexible film 81, the first coils 83 are electrified to generate an electric field for adsorbing the iron powder, namely the iron powder moves towards one side of the first coils 83, so that the display on the curtain 8 disappears, the device is used, the first coils 83 are electrified to initialize the curtain 8, meanwhile, the current passing through the first coils 83 is reduced, namely, the electric field intensity is reduced, the acting force of the electric field on the iron powder is smaller than the resistance of the white solution, the low-electric field setting can avoid the movement of the iron powder under the gravity, namely the movement of the constraint of the iron powder, the plurality of first coils 83 are a plurality of groups of first coils 83, when cleaning the designated area on the curtain 8, the passing current is increased for the first coil 83 in the corresponding area, so that the iron powder in the area is initialized, i.e. the whole curtain 8 can be cleaned, and one side of the first coil 83 is coated with the bottom film 84 for protecting the first coil 83.
The handwriting pen 5 is arranged at the upper end of the base 4, the handwriting pen 5 comprises a pen holder 52, one end of the pen holder 52 is fixedly connected with a strong magnetic pen point 51, when the strong magnetic pen point 51 slides on the curtain 8, iron powder moves towards the strong magnetic pen point 51, namely, the iron powder is far away from the first coil 83, the iron powder develops on the curtain 8 and traces are left, the strong magnetic pen point 51 generates magnetic field intensity which is larger than low electric field intensity generated by the first coil 83 so as to ensure that the iron powder can move, a circuit board 55 is arranged inside the pen holder 52, an antenna circuit is printed on the circuit board 55, an oscillating circuit is further arranged on the circuit board 55, electromagnetic waves with specific frequency are generated outwards by the aid of the antenna circuit and face towards the first coil 83 in a designated area of the curtain 8, signals generated by sensing of the first coil 83 are identified so as to clear contents in the area, a button 53 is arranged on one side of the pen holder 52, and the button 53 is electrically connected with the circuit board 55, the circuit board 55 is provided with a battery 54, the battery 54 is of a button type and supplies power to the stylus pen 5, and the button 53 is used for connecting and disconnecting the battery 54 and the circuit board 55.
The lower part fixedly connected with buckling mechanism 10 of base 4, two bases 4 can realize fixedly through the cooperation between buckling mechanism 10 promptly, and buckling mechanism 10 includes shell 104, and the inside of shell 104 is provided with kelly 105, and the middle part of kelly 105 is rotated and is connected in the inside of shell 104, and the one end of kelly 105 is provided with latch 106, realizes connecting through the cooperation of latch 106 separately between two buckling mechanisms 10.
Two sides of one end of the clamping rod 105 are fixedly connected with a spring 103 and a magnet 102 respectively, the spring 103 is used for keeping the default state of the clamping rod 105, the other end of the spring 103 is abutted against the inner wall of the shell 104, the second coil 101 is arranged on the outer side of the magnet 102, the second coil 101 is fixed on the inner wall of the shell 104, the second coil 101 is electrified to generate a magnetic field and repel the magnet 102, the clamping rod 105 rotates, and the separation of the clamping teeth 106 is achieved.
The symmetry slides on base 4 and is provided with telescopic sleeve 14, does not take place to rotate between telescopic sleeve 14 and the base 4 promptly, and telescopic sleeve 14's one end fixedly connected with gyro wheel 15, and the inside of gyro wheel 15 is provided with in-wheel motor, and in-wheel motor circular telegram realizes base 4's removal, and base 4's bottom is provided with supporting wheel 11, and supporting wheel 11 and two gyro wheels 15 are triangular distribution for realize base 4's stable the placing.
The inside fixedly connected with second motor 16 of sleeve 6, the upper end of second motor 16 extends and is provided with second screw rod 17, and second screw rod 17 and the 7 screw-thread fit of telescopic link start second motor 16, can realize the rise and the decline of telescopic link 7 for satisfy the demand of using, the inner wall of sleeve 6 is provided with the lug, and lug sliding fit avoids telescopic link 7 to take place to rotate in the spout that telescopic link 7 lower part set up.
The inside fixedly connected with third motor 19 of telescopic link 7, the upper end of third motor 19 extends and is provided with wind-up roll 20, and curtain 8 rolling starts third motor 19 on wind-up roll 20, and wind-up roll 20 rotates for receive and release curtain 8.
The side wall of the base 4 and the side wall of the upper part of the telescopic rod 7 are both provided with a plurality of first infrared distance measuring sensors 3, used for measuring the distance between an external entity and the device and avoiding the collision of the device in the moving process, the side wall of the upper part of the telescopic rod 7 is provided with a camera 9, is used for image recognition, improves the intelligence of the device, provides intelligent planning for the movement of the device, and simultaneously uses the first infrared distance measuring sensor 3 and the camera 9, the following function of the device can be realized, the carrying difficulty of the device is reduced, the side wall of the middle part of the telescopic rod 7 is provided with a second infrared distance measuring sensor 18, the second infrared distance measuring sensor 18 is positioned below the curtain 8, because the device is symmetrically arranged, the damage of the curtain 8 caused by the inconsistent expansion height of the two expansion rods 7 is avoided, and a second infrared distance measuring sensor 18 is arranged for obtaining the relative displacement between the two telescopic rods 7.
The working principle is as follows: when the curtain painting device is used, the first motor 12 is started, the roller 15 extends out of the lower portion of the base 4, the second coil 101 is electrified, the latch 106 is disengaged from the clamping state, the hub motor and the third motor 19 are synchronously started, the first component 1 and the second component 2 are separated respectively, the curtain 8 is released, when the curtain 8 is completely unfolded, the first coil 83 is electrified and initialized, then the handwriting pen 5 can be used, painting on the curtain 8 is realized under the action of the strong magnetic pen point 51, if a certain area needs to be clear, the tail end of the pen holder 52 faces the area of the curtain 8, the key 53 is pressed, the first coil 83 in the area senses signals and feeds back the signals to the MCU, the MCU increases current for the first coil 83 in the area, and the painting in the area is cleared.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The intelligent computer technology display device is characterized by comprising a first component (1) and a second component (2), wherein the first component (1) and the second component (2) are of symmetrical structures and respectively comprise a base (4), the upper end of the base (4) is fixedly connected with a sleeve (6), an expansion rod (7) is arranged at the upper end of the sleeve (6) in an extending mode, a curtain (8) is arranged between the first component (1) and the second component (2), and the end portion of the curtain (8) is wound in the expansion rod (7);
the curtain (8) comprises a flexible film (81), a cavity (82) is arranged in the flexible film (81), iron powder and white solution are filled in the cavity (82), a plurality of first coils (83) are distributed on one side of the flexible film (81), and a bottom film (84) is coated on one side of the first coils (83);
the handwriting pen is characterized in that a handwriting pen (5) is arranged at the upper end of the base (4), the handwriting pen (5) comprises a pen holder (52), one end of the pen holder (52) is fixedly connected with a strong magnetic pen point (51), a circuit board (55) is arranged inside the pen holder (52), and an antenna circuit is printed on the circuit board (55);
the lower part fixedly connected with buckling mechanism (10) of base (4), buckling mechanism (10) include shell (104), the inside of shell (104) is provided with kelly (105), the middle part of kelly (105) is rotated and is connected in the inside of shell (104), the one end of kelly (105) is provided with latch (106).
2. The intelligent computer technology display device of claim 1, wherein: the utility model discloses a motor, including base (4), one end fixedly connected with gyro wheel (15) of flexible cover (14), the inside of gyro wheel (15) is provided with in-wheel motor, the bottom of base (4) is provided with supporting wheel (11), supporting wheel (11) and two gyro wheels (15) are triangular distribution.
3. The intelligent computer technology display device of claim 2, wherein: the inside fixedly connected with first motor (12) of base (4), the both ends of first motor (12) all extend and are provided with first screw rod (13), and two first screw rod (13) revolve to opposite, first screw rod (13) and flexible cover (14) screw-thread fit.
4. The intelligent computer technology display device of claim 1, wherein: the inside fixedly connected with second motor (16) of sleeve (6), the upper end extension of second motor (16) is provided with second screw rod (17), second screw rod (17) and telescopic link (7) screw-thread fit, the inner wall of sleeve (6) is provided with the lug, lug sliding fit is in the spout that telescopic link (7) lower part set up.
5. The intelligent computer technology display device of claim 1, wherein: the inside fixedly connected with third motor (19) of telescopic link (7), the upper end of third motor (19) is extended and is provided with wind-up roll (20), curtain (8) rolling is on wind-up roll (20).
6. The intelligent computer technology display device of claim 1, wherein: both sides of one end of the clamping rod (105) are fixedly connected with a spring (103) and a magnet (102) respectively, the other end of the spring (103) props against the inner wall of the shell (104), a second coil (101) is arranged on the outer side of the magnet (102), and the second coil (101) is fixed on the inner wall of the shell (104).
7. The intelligent computer technology display device of claim 1, wherein: the utility model discloses a curtain, including base (4), the lateral wall of base (4) and the upper portion lateral wall of telescopic link (7) all are provided with a plurality of infrared distance measuring sensor (3), the upper portion lateral wall of telescopic link (7) is provided with camera (9), the middle part lateral wall of telescopic link (7) is provided with second infrared distance measuring sensor (18), second infrared distance measuring sensor (18) are located the below of curtain (8).
8. The intelligent computer technology display device of claim 1, wherein: a key (53) is arranged on one side of the pen holder (52), the key (53) is electrically connected with a circuit board (55), and a battery (54) is arranged on the circuit board (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289621.0A CN114435007A (en) | 2022-03-23 | 2022-03-23 | Intelligent computer technology display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289621.0A CN114435007A (en) | 2022-03-23 | 2022-03-23 | Intelligent computer technology display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114435007A true CN114435007A (en) | 2022-05-06 |
Family
ID=81359602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210289621.0A Pending CN114435007A (en) | 2022-03-23 | 2022-03-23 | Intelligent computer technology display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114435007A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276889A (en) * | 1994-04-01 | 1995-10-24 | Toru Kishi | Floating reusable sheet |
| CA2138699A1 (en) * | 1994-12-21 | 1996-06-22 | See Man Hom | Inkless Blackboard Display Panels |
| CN2512043Y (en) * | 2001-12-29 | 2002-09-18 | 台均实业有限公司 | Electronic blackboard with flexible film-insulation electromagnetic inductino generator |
| CN102026821A (en) * | 2008-03-12 | 2011-04-20 | 活力板公司 | Portable retractable erasable writing surface |
| CN206475639U (en) * | 2016-09-18 | 2017-09-08 | 北华大学 | A kind of high efficiency board of education of English teaching |
| CN206678638U (en) * | 2017-02-22 | 2017-11-28 | 新疆大学 | Magnetic blackboard |
| CN107718946A (en) * | 2017-11-16 | 2018-02-23 | 张银华 | A kind of Wiping-free blackboard based on magnetic pole |
| KR102110433B1 (en) * | 2020-02-12 | 2020-05-13 | 주식회사 엠엔지 이엔티 | Electronic blackboard with a rests based on magnetic control |
| CN215416260U (en) * | 2021-07-10 | 2022-01-04 | 海南辉锐广告有限公司 | Portable exhibition show is with removing curtain |
-
2022
- 2022-03-23 CN CN202210289621.0A patent/CN114435007A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07276889A (en) * | 1994-04-01 | 1995-10-24 | Toru Kishi | Floating reusable sheet |
| CA2138699A1 (en) * | 1994-12-21 | 1996-06-22 | See Man Hom | Inkless Blackboard Display Panels |
| CN2512043Y (en) * | 2001-12-29 | 2002-09-18 | 台均实业有限公司 | Electronic blackboard with flexible film-insulation electromagnetic inductino generator |
| CN102026821A (en) * | 2008-03-12 | 2011-04-20 | 活力板公司 | Portable retractable erasable writing surface |
| CN206475639U (en) * | 2016-09-18 | 2017-09-08 | 北华大学 | A kind of high efficiency board of education of English teaching |
| CN206678638U (en) * | 2017-02-22 | 2017-11-28 | 新疆大学 | Magnetic blackboard |
| CN107718946A (en) * | 2017-11-16 | 2018-02-23 | 张银华 | A kind of Wiping-free blackboard based on magnetic pole |
| KR102110433B1 (en) * | 2020-02-12 | 2020-05-13 | 주식회사 엠엔지 이엔티 | Electronic blackboard with a rests based on magnetic control |
| CN215416260U (en) * | 2021-07-10 | 2022-01-04 | 海南辉锐广告有限公司 | Portable exhibition show is with removing curtain |
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| CN210515238U (en) | Capacitance pen |
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