CN112908049A - Multimedia device for Chinese teaching - Google Patents
Multimedia device for Chinese teaching Download PDFInfo
- Publication number
- CN112908049A CN112908049A CN202110095042.8A CN202110095042A CN112908049A CN 112908049 A CN112908049 A CN 112908049A CN 202110095042 A CN202110095042 A CN 202110095042A CN 112908049 A CN112908049 A CN 112908049A
- Authority
- CN
- China
- Prior art keywords
- side wall
- sliding chamber
- transmission
- fixedly connected
- projector
- 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.)
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Links
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 42
- 230000007246 mechanism Effects 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Images
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
-
- 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
- A47B37/00—Tables adapted for other particular purposes
- A47B37/02—Tables specially adapted to be used with domestic photographic projectors, e.g. tables with levelling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- 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
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a multimedia device for Chinese teaching, which comprises a teaching table, wherein a display screen is installed on the front surface of the teaching table, an installation groove is formed in the front surface of the teaching table, the inner side wall of the installation groove is connected with a sliding chamber in a sliding mode, the top of the sliding chamber is rotatably connected with a sealed door through a rotating shaft, a torsion spring is arranged on the rotating shaft, a motor cavity is formed in the sliding chamber, the inner side wall of the motor cavity is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a bidirectional screw rod. The invention can lead the projector to project on the blackboard at a close position by arranging the projector in the teaching table, thereby realizing the condition of projecting images to carry out Chinese teaching and generally writing on the blackboard.
Description
Technical Field
The invention relates to the technical field of multimedia, in particular to a multimedia device for Chinese teaching.
Background
Chinese (is a Chinese language character, particularly a Chinese language character, in the Chinese character culture circle and overseas Chinese communities, Chinese is also called Chinese and Chinese, and is one of six working languages of the united nations, so that Chinese has an important position in the world like English.
Present chinese teaching multimedia device generally adopts the projecting apparatus to place the top in the middle of the classroom, then throw the image from aerial and teach, aerial present projection arrangement is in unsettled state on the one hand, the safeguard measure who does not have the advantage, make this projection arrangement probably receive the striking damage, the most projection of present projection arrangement is on whole blackboard simultaneously, the great space that occupies, be unfavorable for projection image projection to carry out the blackboard writing simultaneously, on the other hand, present projection equipment camera lens exposes in the air for a long time, remaining dust can be stained with and attach on the lens, be unfavorable for the generation of image, for this, a chinese teaching multimedia device is used.
Disclosure of Invention
The invention aims to solve the defects that the prior projection device is in a suspended state and has no protective measures for advantages in the prior art, and provides a multimedia device for Chinese teaching.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a multimedia device is used in chinese teaching, includes the teaching table, the display screen is installed in the front of teaching table, the mounting groove has been seted up in the front of teaching table, the inside wall sliding connection of mounting groove has the sliding chamber, the top of sliding chamber is rotated through the pivot and is connected with the sealing door, be equipped with the torsional spring in the pivot, the motor chamber has been seted up to the inside of sliding chamber, the inside wall fixedly connected with driving motor in motor chamber, driving motor's the two-way lead screw of output fixedly connected with, two-way lead screw passes the motor chamber and rotates with the inside wall of sliding chamber to be connected, be connected with the projecting apparatus through elevating system on the two-way lead screw, be connected with drive mechanism and wiping mechanism on.
Preferably, the side of sliding chamber is equipped with a plurality of stoppers, the inside wall sliding connection of stopper and mounting groove, for having certain frictional slip setting between mounting groove and the sliding chamber.
Preferably, elevating system includes the fixed plate of fixed connection in the projecting apparatus bottom, two installation covers have been cup jointed to the lateral wall screw thread of two-way lead screw, the top of installation cover is rotated and is connected with the connecting rod, the one end that the installation cover was kept away from to the connecting rod is rotated with the bottom of fixed plate and is connected.
Preferably, the top of the projector is fixedly connected with an elastic contact ball, and the elastic contact ball is in contact with the bottom of the airtight door.
Preferably, drive mechanism is including rotating center pin and the transmission shaft of connection on the indoor lateral wall of sliding chamber respectively, the second gear has been cup jointed to the lateral wall of center pin is fixed, the fixed drive gear that has cup jointed on the lateral wall of transmission shaft, the fixed first gear that has cup jointed on the lateral wall of two-way lead screw, the lateral wall intermeshing setting of first gear and drive gear, the lateral wall intermeshing setting of drive gear and second gear.
Preferably, clean the mechanism including seting up at the inside mounting groove of center pin, the inside wall of mounting groove sets up partial interior thread groove, the inside wall threaded connection of interior thread groove has the driving block, the lateral wall of driving block rotates with the inside wall of mounting groove to be connected, one side fixedly connected with of driving block has the transfer line that the level set up, the transfer line extend to the outside of center pin and with center pin sliding connection, the tip fixedly connected with dead lever of driving block is kept away from to the transfer line, the inside wall fixedly connected with installation frame of sliding chamber, the installation frame rotates with the lateral wall of dead lever to be connected, the tip fixedly connected with installed part of transfer line is kept away from to the dead lever, the tip of installed part has through bolted connection and cleans the circle cloth, clean the circle cloth and can contact the.
Preferably, a plurality of vent holes are formed in the mounting frame, fan blades are fixedly sleeved on the outer side wall of the transmission rod, and the wind direction of the fan blades faces the opening direction in the sliding chamber.
Compared with the prior art, the invention has the beneficial effects that:
1. through set up the projecting apparatus in the teaching table, can make the projecting apparatus carry out the projection to the blackboard in nearer position, projection image has been realized carrying out chinese teaching on one side, the condition of writing on a blackboard generally carries out, it needs to explain, the whole slidable that can slide on the mounting groove inside wall of sliding chamber, be that the projecting apparatus can be free from the regulation of the distance of blackboard, the distance of regulation is in order to accord with the student and watch as the standard, because the sliding setting for having certain friction between mounting groove and the sliding chamber, do not need extra fixing device between mounting groove and the sliding chamber.
2. Through the matching work between the transmission mechanism and the wiping mechanism, when the projector is accommodated in the sliding chamber, the rotating bidirectional screw rod drives the central shaft to rotate through the first gear, the transmission gear and the second gear, so that the fan blades on the outer side wall of the fixed rod always rotate, the rotating fan blades blow air to the inside of the sliding chamber, the dust remained in the sliding chamber can be blown out to the outside of the sliding chamber, the transmission block in progressive movement starts to rotate with the mounting groove along with the sealing of the sealing door, the side face of the wiping circular cloth is just in contact with the lens of the projector at the moment, and the rotating wiping circular cloth wipes the side face of the projector, so that the problem that the existing projection equipment lens is exposed in the air for a long time, the remained dust can be attached to the lens is solved, the projection effect of the lens of the projector is effectively optimized, and it needs to be noted that when the projector is collected in the sliding chamber, the driving motor continues to work, the two mounting sleeves rotate on the smooth side walls of the two-way screw rod at the moment, the projector cannot be driven to move, and the fixing rod and the central shaft are in a rotating state at the moment.
3. Through the cooperation work between the elevating system, make the projecting apparatus wholly can stretch out from the sliding chamber and carry out the projection, when not needing the projecting apparatus, during the projecting apparatus can take in the sliding chamber, airtight door was airtight to the sliding chamber simultaneously, has avoided present projection arrangement to be in unsettled state, and projection arrangement probably receives the condition that the striking damaged, has protected the life of projecting apparatus.
Drawings
FIG. 1 is a schematic structural diagram of a multimedia device for Chinese teaching according to the present invention;
FIG. 2 is a schematic structural diagram of a display screen of a multimedia device for Chinese teaching according to the present invention;
FIG. 3 is an enlarged view of a multimedia apparatus for Chinese teaching according to the present invention at position A;
FIG. 4 is an enlarged view of a multimedia device for Chinese teaching according to the present invention at B;
fig. 5 is a schematic structural diagram of a fixing plate of a multimedia device for chinese teaching according to the present invention.
In the figure: the teaching desk comprises a teaching desk 1, a mounting groove 2, a sliding chamber 3, a driving motor 4, a bidirectional screw rod 5, a mounting sleeve 6, a sealed door 7, a connecting rod 8, a fixing plate 9, a first gear 10, a transmission gear 11, a second gear 12, a display screen 13, a mounting frame 14, a projector 15, an elastic contact ball 16, a transmission rod 17, a fixing rod 18, a wiping circular cloth 19, fan blades 20, a central shaft 21, a mounting groove 22, an internal thread groove 23 and a transmission block 24.
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.
Referring to fig. 1-5, a multimedia device for chinese teaching, comprising a teaching table 1, a display 13 is installed on the front of the teaching table 1, a mounting groove 2 is opened on the front of the teaching table 1, a sliding chamber 3 is slidably connected to the inner side wall of the mounting groove 2, a plurality of stoppers are disposed on the side surface of the sliding chamber 3, the stoppers are slidably connected to the inner side wall of the mounting groove 2, a sliding arrangement with a certain friction is provided between the mounting groove 2 and the sliding chamber 3, a closed door 7 is rotatably connected to the top of the sliding chamber 3 via a rotating shaft, a torsion spring is disposed on the rotating shaft, a motor cavity is opened inside the sliding chamber 3, a driving motor 4 is fixedly connected to the inner side wall of the motor cavity, a bidirectional screw 5 is fixedly connected to the output end of the driving motor 4, the bidirectional screw 5 passes through the motor cavity and is rotatably connected to the inner side wall of the sliding chamber 3, a projector 15, the Chinese teaching is carried out by projecting images while realizing, the condition of writing on a blackboard is generally carried out, it needs to be explained that the sliding chamber 3 can wholly slide on the inner side wall of the mounting groove 2, the distance between the projector 15 and the blackboard can be freely adjusted, the adjusted distance is subject to the observation of students, and because the mounting groove 2 and the sliding chamber 3 are arranged in a sliding way with certain friction, no extra fixing device is needed between the mounting groove 2 and the sliding chamber 3.
The bidirectional screw rod 5 is connected with a projector 15 through a lifting mechanism, the lifting mechanism comprises a fixed plate 9 fixedly connected to the bottom of the projector 15, two mounting sleeves 6 are sleeved on the outer side wall of the bidirectional screw rod 5 in a threaded manner, the top of each mounting sleeve 6 is rotatably connected with a connecting rod 8, one end of each connecting rod 8, far away from the mounting sleeve 6, is rotatably connected with the bottom of the fixed plate 9, an elastic contact ball 16 is fixedly connected to the top of the projector 15, the elastic contact ball 16 is in contact with the bottom of the airtight door 7, through the cooperation between the lifting mechanisms, the projector 15 can be integrally extended out of the sliding chamber 3 for projection, when the projector 15 is not needed, the projector 15 can be retracted into the sliding chamber 3, and meanwhile, the sealing door 7 seals the sliding chamber 3, so that the situation that the existing projection device is in a suspended state and is possibly damaged by impact is avoided, and the service life of the projector 15 is prolonged.
Be connected with drive mechanism and wiping mechanism on the two-way lead screw 5, drive mechanism is including rotating center pin 21 and the transmission shaft of connection on 3 inside walls of sliding chamber respectively, second gear 12 has been cup jointed to the lateral wall of center pin 21 is fixed, it has drive gear 11 to fix the cover on the lateral wall of transmission shaft, first gear 10 has been cup jointed on the lateral wall of two-way lead screw 5 fixedly, first gear 10 and drive gear 11's lateral wall intermeshing sets up, drive gear 11 and second gear 12's lateral wall intermeshing sets up.
The wiping mechanism comprises a mounting groove 22 arranged inside a central shaft 21, the inner side wall of the mounting groove 22 is provided with a part of an inner thread groove 23, the inner side wall of the inner thread groove 23 is in threaded connection with a transmission block 24, the outer side wall of the transmission block 24 is rotationally connected with the inner side wall of the mounting groove 22, one side of the transmission block 24 is fixedly connected with a transmission rod 17 horizontally arranged, the transmission rod 17 extends to the outside of the central shaft 21 and is in sliding connection with the central shaft 21, the end part, away from the transmission block 24, of the transmission rod 17 is fixedly connected with a fixed rod 18, the inner side wall of the sliding chamber 3 is fixedly connected with a mounting frame 14, the mounting frame 14 is rotationally connected with the outer side wall of the fixed rod 18, the end part, away from the transmission rod 17, of the mounting piece is fixedly connected with a wiping, the outer side wall of the transmission rod 17 is fixedly sleeved with a fan blade 20, the wind direction of the fan blade 20 faces the opening direction of the inside of the sliding chamber 3, through the matching work between the transmission mechanism and the wiping mechanism, when the projector 15 is accommodated in the sliding chamber 3, the rotating bidirectional screw 5 drives the central shaft 21 to rotate through the first gear 10, the transmission gear 11 and the second gear 12, so that the fan blade 20 on the outer side wall of the fixed rod 18 always rotates, the rotating fan blade 20 blows air into the inside of the sliding chamber 3, dust remained in the sliding chamber 3 can be blown out of the sliding chamber 3, the transmission block 24 in progressive movement starts to rotate with the installation groove 22 along with the sealing of the sealed door 7, at the moment, the side surface of the wiping circular cloth 19 is just in contact with the lens of the projector 15, the rotating circular wiping cloth 19 wipes the side surface of the projector 15, and the problem that the lens of the existing projection equipment is exposed in the air for, the condition that residual dust can be attached to the lens is achieved, the projection effect of the lens of the projector 15 is effectively optimized, it needs to be noted that when the projector 15 collects in the sliding chamber 3, the driving motor 4 continues to work, the two mounting sleeves 6 rotate on the sliding side walls of the two-way screw rod 5 at the moment, the projector 15 cannot be driven to move, and at the moment, the fixing rod 18 and the central shaft 21 are in a rotating state.
In the invention, a teacher can observe the content on the display screen 13 and then open the projector 15, the content in the display screen 13 can be displayed by the projector 15, at this time, the driving motor 4 is driven to work, the output end of the driving motor 4 drives the two mounting sleeves 6 to move relatively, the movable mounting sleeve 6 drives the connecting rod 8 to move, the corresponding connecting rod 8 drives the fixing plate 9 to move upwards, the movable fixing plate 9 drives the projector 15 at the top of the fixing plate 9 to move, so that the elastic contact ball 16 at the top of the projector 15 presses the airtight door 7 to open, at this time, the projector 15 gradually extends out of the sliding chamber 3, the image in the projector 15 is projected on one side of the blackboard, because the projector 15 is arranged in the teaching table 1 in front of the platform, the image of the head image of the projector 15 is small, so that the other part of the blackboard can be written on at any time, and the sliding chamber 3 can move in the inner side wall, the distance between the projector 15 and the blackboard is adjusted, and the size of the projected image is adjusted accordingly.
After the projection is finished, the driving motor 4 drives the bidirectional screw rod 5 to rotate in a reverse direction, at the same time, the two mounting sleeves 6 move back to back, the connecting rod 8 is driven to contract, so that the projector 15 is integrally retracted into the sliding chamber 3, meanwhile, the torsion spring on the airtight door 7 drives the airtight door 7 to reset and close to seal the sliding chamber 3, along with the contraction of the projector 15, the bidirectional screw rod 5 rotates to drive the first gear 10 to rotate, the transmission gear 11 drives the second gear 12 to rotate, so that the central shaft 21 rotates, the rotating central shaft 21 drives the fan blades 20 to rotate to blow air inside the sliding chamber 3, so that the air inside the sliding chamber 3 is blown away before the airtight door 7 is closed, the sliding chamber 3 can be kept clean as much as possible, the central shaft 21 rotates to drive the transmission block 24 inside the central shaft 21 to move, and the fixing rod 18 movably rotates in the mounting, with the closing of the airtight door 7, the transmission block 24 is in contact rotation connection with the installation groove 22, the wiping circular cloth 19 is in contact with the lens of the projector 15, the rotating fixing rod 18 drives the wiping circular cloth 19 to rotate to wipe the lens of the projector 15, and after a period of time, the driving motor 4 stops working and wiping stops.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A multimedia device for Chinese teaching comprises a teaching desk (1) and is characterized in that, a display screen (13) is arranged on the front surface of the teaching table (1), an installation groove (2) is arranged on the front surface of the teaching table (1), the inner side wall of the mounting groove (2) is connected with a sliding chamber (3) in a sliding way, the top of the sliding chamber (3) is connected with a sealed door (7) through a rotating shaft in a rotating way, a torsion spring is arranged on the rotating shaft, a motor cavity is arranged inside the sliding chamber (3), the inner side wall of the motor cavity is fixedly connected with a driving motor (4), the output end of the driving motor (4) is fixedly connected with a bidirectional screw rod (5), the bidirectional screw rod (5) passes through the motor cavity and is rotationally connected with the inner side wall of the sliding chamber (3), the bidirectional screw rod (5) is connected with a projector (15) through a lifting mechanism, and the bidirectional screw rod (5) is connected with a transmission mechanism and a wiping mechanism.
2. The multimedia device for Chinese teaching according to claim 1, wherein the side of the sliding chamber (3) is provided with a plurality of limiting blocks, the limiting blocks are slidably connected with the inner side wall of the mounting groove (2), and the mounting groove (2) and the sliding chamber (3) are slidably arranged with a certain friction.
3. The multimedia device for Chinese teaching of claim 1, wherein the lifting mechanism comprises a fixing plate (9) fixedly connected to the bottom of the projector (15), the two mounting sleeves (6) are screwed on the outer side wall of the bidirectional screw rod (5), the top of each mounting sleeve (6) is rotatably connected with a connecting rod (8), and one end of each connecting rod (8) far away from the corresponding mounting sleeve (6) is rotatably connected with the bottom of the corresponding fixing plate (9).
4. The multimedia device for chinese teaching according to claim 1, wherein the top of the projector (15) is fixedly connected with a resilient contact ball (16), and the resilient contact ball (16) is in contact with the bottom of the airtight door (7).
5. The multimedia device for Chinese teaching as claimed in claim 1, wherein the transmission mechanism comprises a central shaft (21) and a transmission shaft respectively rotatably connected to the inner side wall of the sliding chamber (3), the outer side wall of the central shaft (21) is fixedly sleeved with a second gear (12), the outer side wall of the transmission shaft is fixedly sleeved with a transmission gear (11), the outer side wall of the bidirectional screw (5) is fixedly sleeved with a first gear (10), the outer side walls of the first gear (10) and the transmission gear (11) are meshed with each other, and the outer side walls of the transmission gear (11) and the second gear (12) are meshed with each other.
6. The multimedia device for Chinese teaching of claim 5, wherein the wiping mechanism comprises a mounting groove (22) formed inside the central shaft (21), the inner side wall of the mounting groove (22) is provided with a part of internal thread groove (23), the inner side wall of the internal thread groove (23) is connected with a transmission block (24) in a threaded manner, the outer side wall of the transmission block (24) is rotatably connected with the inner side wall of the mounting groove (22), one side of the transmission block (24) is fixedly connected with a horizontally arranged transmission rod (17), the transmission rod (17) extends to the outside of the central shaft (21) and is slidably connected with the central shaft (21), the end part of the transmission rod (17) far away from the transmission block (24) is fixedly connected with a fixing rod (18), the inner side wall of the sliding chamber (3) is fixedly connected with a mounting frame (14), and the mounting frame (14) is rotatably connected with the outer side wall of the fixing rod, the end part of the fixing rod (18) far away from the transmission rod (17) is fixedly connected with a mounting part, the end part of the mounting part is connected with a wiping circular cloth (19) through a bolt, and the wiping circular cloth (19) can contact with a lens on the projector (15).
7. The multimedia device for chinese teaching according to claim 6, wherein the mounting frame (14) has a plurality of ventilation holes, the outer side wall of the transmission rod (17) is fixedly connected with fan blades (20), and the wind direction of the fan blades (20) faces the opening direction inside the sliding chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095042.8A CN112908049A (en) | 2021-01-25 | 2021-01-25 | Multimedia device for Chinese teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095042.8A CN112908049A (en) | 2021-01-25 | 2021-01-25 | Multimedia device for Chinese teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112908049A true CN112908049A (en) | 2021-06-04 |
Family
ID=76117614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110095042.8A Withdrawn CN112908049A (en) | 2021-01-25 | 2021-01-25 | Multimedia device for Chinese teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112908049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929972A (en) * | 2020-08-05 | 2020-11-13 | 南京城市职业学院(南京市广播电视大学) | Multimedia projection device for teaching |
-
2021
- 2021-01-25 CN CN202110095042.8A patent/CN112908049A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929972A (en) * | 2020-08-05 | 2020-11-13 | 南京城市职业学院(南京市广播电视大学) | Multimedia projection device for teaching |
| CN111929972B (en) * | 2020-08-05 | 2021-08-27 | 南京城市职业学院(南京市广播电视大学) | Multimedia projection device for teaching |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210604 |