CN107765502A - Projection screen device - Google Patents
Projection screen device Download PDFInfo
- Publication number
- CN107765502A CN107765502A CN201711283888.4A CN201711283888A CN107765502A CN 107765502 A CN107765502 A CN 107765502A CN 201711283888 A CN201711283888 A CN 201711283888A CN 107765502 A CN107765502 A CN 107765502A
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- Prior art keywords
- curtain
- support
- drive
- projection screen
- screen device
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Classifications
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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
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention provides a kind of projection screen device, including support driving mechanism and screen assembly；Screen assembly includes the first curtain, and is connected on the first curtain opposite end respectively and is movably connected with two spools with flexibility in support driving mechanism；Support driving mechanism includes support column, it is movably connected on two support arms of support column opposite end, the first drive component of two support arm intervals is arranged at, and is connected to the sides of two support arms and is used to drive two spools while makees 2 second drive components of radially bending.The present invention drives support arm and spool to be moved along the direction that support column extends to realize that the area of the first curtain changes by the first drive component, and drive two spools by two the second drive components while make radially bending and be changed into curved surface to realize the first curtain by plane or plane is changed into by curved surface, it can not change flat, the curved state of curtain and the technical problem of area so as to solve projection screen device, improve the usage experience effect of user.
Description
Technical field
It is to be related to a kind of projection screen device more specifically the invention belongs to project the technical field of auxiliary equipment.
Background technology
With the development of shadow casting technique, projecting apparatus is widely used in the occasions such as cinema, office, classroom, wedding simultaneously
To display image and video file, in order to obtain more preferable display effect, projecting apparatus generally requires projection screen device to match somebody with somebody
Close and use.
At present, because the curtain material in projection screen device is more soft, the shape of curtain by its support member shape
Shape determines, for example, curtain is fixed on metope, is influenceed by wall, the shape of curtain is only plane；It is in addition, existing
In use, the size of curtain is changeless to projection screen device, i.e., the area of curtain can not be according to use
The wish of person is adjusted.Therefore, for having been fixed in for the curtain on support member, its flat, curved state and area can not
It is changed according to the wish of user or the demand of usage scenario.
The content of the invention
It is an object of the invention to provide a kind of projection screen device, to solve in the prior art, projection screen device without
Method changes flat, the curved state of curtain and the technical problem of area.
To achieve these goals, the technical solution adopted by the present invention is：Provide a kind of projection screen device, including branch
Support drive mechanism, and the screen assembly that can be contained in the support driving mechanism；The screen assembly includes the first curtain, and
Being connected on the first curtain opposite end respectively and being movably connected with has flexible use in the support driving mechanism
In two spools for winding first curtain；The support driving mechanism includes support column, is movably connected on the support column phase
To two support arms at both ends, be arranged at the two support arm intervals be used for drive two support arms to be moved along the support column
The first dynamic drive component, and be connected to two support arms side be used for drive two spools while make radially bending
2 second drive components, first drive component and the support arm be connected, second drive component with it is described
Spool is connected.
Further, the screen assembly also includes being arranged at is used to drive the spool to make axially to turn on the spool
Dynamic torsion spring.
Further, first drive component includes being sheathed on the support column periphery and opposite end is resisted against respectively
The elastic component of two support arms, the first driving member of the support arm is connected to, and is connected with first driving member
The first actuator.
Further, the support driving mechanism also include be fixedly arranged on the two support arm both ends and with the support arm phase
Four guide rails handed over, the end of the spool is flexibly connected with the guide rail.
Further, second drive component includes the multiple housings for being sheathed on the spool periphery, connection adjacent two
The hinge of the housing, and the second driving for being used to drive the housing to be rotated around the hinge being arranged on the housing
Part, the opposite end of the spool are respectively protruding into two guide rails for being fixedly arranged on the support arm opposite end.
Further, second drive component includes connecting the connection in the middle part of the spool and in the middle part of the support arm
Part, and 2 second actuators for driving the spool opposite end to be moved along the guide rail, the one of second actuator
End is flexibly connected with one end of the spool, and the other end and the guide rail of second actuator are slidably connected.
Further, chute is offered on the guide rail, second drive component also includes being rotationally connected with described the
The pulley of the two actuator other ends, the pulley are placed in the chute.
Further, the support column vertically extends, and the support arm is horizontally extending.
Further, the projection screen device also includes the extension device for the screen width that extends, the expansion group
Part includes 2 second curtains for being arranged at opposite sides in the horizontal direction of first curtain, parallel to the support column and company
Two rotating shafts being connected on the outer ledge of 2 second curtains, and be arranged at second curtain rear side be used for drive institute
The movement of the second curtain and the 3rd actuator around the axis of rotation are stated, the rotating shaft is rotatablely connected with the 3rd actuator.
Further, the projection screen device also includes being used to realize first drive component, second driving
Component and the sensor of the 3rd actuator collaboration linkage, first drive component, second drive component and described
3rd actuator electrically connects with the sensor respectively.
The beneficial effect of projection screen device provided by the invention is：Employ with flexible spool, support column, branch
Brace, the first drive component and the second drive component coordinate, and support arm and spool are driven along support column by the first drive component
The direction movement of extension drives two spools simultaneously to realize the change of the area of the first curtain, and by two the second drive components
Make radially bending and be changed into curved surface to realize the first curtain by plane or plane is changed into by curved surface, thrown so as to efficiently solve
Shadow screen apparatus can not change flat, the curved state of curtain and the technical problem of area, expand the applicable model of projection screen device
Enclose, improve the usage experience effect of user.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the three-dimensional signal of support driving mechanism and screen assembly in projection screen device provided in an embodiment of the present invention
Figure；
Fig. 2 is the schematic perspective view of projection screen device provided in an embodiment of the present invention.
Wherein, each reference in figure：
1-projection screen device, 10-screen assembly, 20-support driving mechanism, 30-expansion component, 11-the first act
Cloth, 12-spool, 21-support column, 22-support arm, the 23-the first drive component, the 24-the second drive component, 25-guide rail,
31-the second curtain, 32-rotating shaft, 231-elastic component, 241-connector, 250-chute.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " top ",
The orientation or position relationship of the instruction such as " bottom " " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Referring to Fig. 1, existing illustrate to projection screen device provided by the invention.The projection screen device 1 includes screen
Curtain component 10 and support driving mechanism 20, wherein, screen assembly 10 can be housed in support driving mechanism 20, herein, group of screens
Part 10 includes the first curtain 11 and two spools 12, and two phases of spool 12 are connected on the opposite end of the first act cloth 11, for rolling up
Around the first curtain 11, and spool 12 has flexibility, can be plastically deformed under external force；Support driving mechanism 20 includes
21, two support arms 22 of support column, the first drive component 23 and two the second drive components 24, two support arms 22 are distinguished
The opposite end of support column 21 is movably connected in, first drive component 23 is arranged on the interval of two support arms 22, and
First drive component 23 is connected with support arm 22, for driving two support arms 22 to be moved along support column 21, second drive
Dynamic component 24 is connected to the side of support arm 22, and the second drive component 24 is connected with spool 12, two second drivings
Component 24 can drive two spools 12 while make radially bending.
The operation principle of projection screen device 1 is：Under reset condition, the first curtain 11 works as needs on spool 12
When opening the first curtain 11, the first drive component 23 applies thrust to two support arms 22 simultaneously, makes two support arms 22 along branch
Dagger 21 is towards the direction movement being located remotely from each other, and now, support arm 22 drives the second drive component 24 and spool 12 to move together, makes
Two spools 12 are obtained towards the direction movement being located remotely from each other, and then the first curtain 11 is expanded to required area；When needing diminution
During the area of one curtain 11, the first drive component 23 applies pulling force to two support arms 22 simultaneously, makes two support arms 22 along branch
Dagger 21 moves towards direction close to each other, and now, two spools 12 follow two support arms 22 together towards side close to each other
Reduced to movement, and then by the area of the first curtain 11；When needing to change the first 11 shape of curtain, two the second drive components
24 drive two spools 12 of plastically deformable while make radially bending so that the first curtain 11 is transformed into curved surface from plane.
Projection screen device 1 provided by the invention, compared with prior art, beneficial effect is：Employ with flexibility
Spool 12, support column 21, support arm 22, the first drive component 23 and the second drive component 24 coordinate, pass through the first driving group
Part 23 drives support arm 22 and spool 12 to be moved along the direction that support column 21 extends to realize that the area of the first curtain 11 changes, and
Two spools 12 are driven by two the second drive components 24 while make radially bending to realize that the first curtain 11 is changed by plane
It is changed into plane for curved surface or by curved surface, can not changes flat, the curved state of curtain so as to efficiently solve projection screen device
And the technical problem of area, the scope of application of projection screen device is expanded, improves the usage experience effect of user.
Preferably as a kind of embodiment of projection screen device provided by the invention, above-mentioned screen assembly 10
Also include torsion spring, the torsion spring is arranged on spool 12, for driving spool 12 to make axial rotation, the i.e. twisting force in torsion spring
Under, the first curtain 11 keeps the trend wound on spool 12 so that the first curtain 11 is tensioned all the time.In this way, both it is easy to curtain
Storage, and can ensure projection screen display effect.Herein, projection screen refers to view field of the projecting apparatus on curtain.
Further, referring to Fig. 1, a kind of embodiment as projection screen device provided by the invention, on
Stating the first drive component 23 includes elastic component 231, the first driving member and the first actuator, wherein, elastic component 231 is set in support
The periphery of post 21, and the opposite end of elastic component 231 is supported with two phases of support arm 22 respectively, the first driving member and support arm
22 connections, the first actuator and the first driving member are connected.Specifically, the first actuator is motor, preferably stepper motor
Or servomotor, herein, under the elastic force effect of elastic component 231, two support arms 22 are remained towards the direction being located remotely from each other
Mobile trend, elastic component 231 both play a part of buffering and prevent two support arms 22 from rigid contact occurs, and and can is to two
Support arm 22 provides the driving force towards the direction movement being located remotely from each other；Preferably, elastic component 231 is brute spring, elastic component 231
Symmetrical centre be fixedly connected with support column 21, in this way, elastic component 231 applies towards two support arms 22 positioned at its opposite end
Pressure it is more uniform.In use, the first actuator can coordinate fixed switch or remote control switch to drive the first drive member, when
First driving member drives support arm 22, and towards during direction movement close to each other, elastic component 231 compresses effect in two support arms 22
Lower to compress, the area of the first curtain 11 reduces；Court is located remotely from each other under two support arms 22 act in the elastic force of elastic component 231
When direction is moved, the area of the first curtain 11 expands.
Further, referring to Fig. 1, a kind of embodiment as projection screen device provided by the invention, on
Stating support driving mechanism 20 also includes four guide rails 25, and four guide rails 25 are respectively fixedly disposed at the relative of two support arms 22
Both ends, and intersect with support arm 22, meanwhile, the end of said reel 12 is flexibly connected with guide rail 25, i.e., guide rail 25 is used to draw
Lead the end movement of spool 12.Specifically, guide rail 25 is crossed to form more than 0 ° with support arm 22 and is less than 180 ° of angle, and
And two guide rails 25 for being fixedly installed on the same opposite end of support arm 22 be preferably spacing between being parallel to each other or both from
It is gradually reduced with one end that support arm 22 connects to its other end, two guide rails positioned at the same side of two support arms 22
25 be preferably to be parallel to each other, and the end of spool 12 can move along guide rail 25, in this way, ensure that the first curtain 11 is transformed into song from plane
The stability and reliability of face process.Certainly, as the case may be and demand, in other embodiments of the invention, fixation is set
Putting spacing between two guide rails 25 of the same opposite end of support arm 22 can be from it with one end that support arm 22 connects to it
The other end gradually expands, and the extended line positioned at two guide rails 25 of the same side of two support arms 22 intersects, and does not make herein only
One limits.
Further, referring to Fig. 1, a kind of embodiment as projection screen device provided by the invention, on
Stating the second drive component 24 includes multiple housings and the second actuator (not shown), wherein, housing is set in the outer of spool 12
In week, it is hingedly connected between two neighboring housing, the second actuator is arranged on housing, for driving housing around hinge to rotate,
Meanwhile the opposite end of spool 12 is respectively protruding into two guide rails 25 for being fixedly installed on the opposite end of support arm 22.Specifically,
Second drive component 24 may include second actuator or multiple second actuators, and the second actuator is motor, is preferably walked
Stepper motor or servomotor, and second actuator can be configured on each housing, also can two or more housing configurations
One the second actuator, unique limit is not made to the specific set-up mode of the second actuator herein；When the first curtain 11 is in flat
During surface state, multiple housings have the cylinder of the accommodating cavity of accommodating spool 12 by hinge series connection in a strip, and the cylinder can
It is connected by being arranged on the connector 241 in the middle part of itself with support arm 22, or fixed set is stretched into by the opposite end of spool 12
Put in two guide rails 25 in the opposite end of support arm 22 and be connected with support arm 22, certainly, as the case may be and demand,
In the other embodiments of invention, the cylinder can be also connected with support arm 22 otherwise；When the first curtain 11 is needed from flat
When face is transformed into curved surface, the second actuator can coordinate fixed switch or remote control switch to drive each housing around hinge to turn towards the same side
It is dynamic so that formed with the angle more than 0 ° and less than 180 ° between two neighboring housing, and because spool 12 has flexibility,
Under the drive of each housing, spool 12 is transformed into arc line shaped from linear so that the first curtain 11 is transformed into certain from plane
The curved surface of curvature.
Further, referring to Fig. 1, a kind of embodiment as projection screen device provided by the invention, on
Stating the second drive component 24 includes connector 241 and two the second actuators (not shown), wherein, connector 241 connects spool
12 middle part and the middle part of support arm 22, one end of the second actuator are flexibly connected with one end of spool 12, the second actuator
The other end is slidably connected with guide rail 25, for driving the end of spool 12 to be moved along guide rail 25.When the first curtain 11 needs to change
During shape, because spool 12 has flexibility, and its middle part is fixedly connected with the middle part of support arm 22 by connector 241, i.e.,
The transfixion of middle part opposite rail 25 of spool 12, two the second actuators for being connected to the opposite end of spool 12 drive spool 12
End moved along the direction that guide rail 25 extends, and then cause spool 12 from linear be transformed into arc line shaped or from arc line shaped change
Be in line shape, and drives the curvature of the first curtain 11 to change.
Further, referring to Fig. 1, a kind of embodiment as projection screen device provided by the invention,
Chute 250 is offered on above-mentioned guide rail 25, meanwhile, above-mentioned second drive component 24 also includes pulley (not shown), and the pulley turns
The dynamic other end for being connected to the second actuator, and pulley is contained in chute 250, i.e., and pulley can slide along chute 250 so that
The connection of second actuator and guide rail 25 is more smooth, the resistance when the second actuator drives said reel 12 to be slided along guide rail 25
It is smaller, and then precision is higher when finely tuning the curvature of the first curtain 11.Herein, the second actuator is motor, preferably stepping electricity
Machine or servomotor.
Further, Fig. 1 and Fig. 2 are referred to, a kind of specific embodiment party as projection screen device provided by the invention
Formula, above-mentioned support column 21 vertically extend, meanwhile, above-mentioned support arm 22 is horizontally extending, i.e., in the first driving group
Under the driving of part 23, the direction change of the size of the first curtain 11 along its height, under the driving of the second drive component 24, first
The shape of curtain 11 changes in the horizontal direction so that the first curtain 11 is transformed into 3 D stereo song from two-dimensional plane state
Surface state, improve the usage experience effect of user.
Further, referring to Fig. 2, a kind of embodiment as projection screen device provided by the invention, on
Stating projection screen device 1 also includes expanding component 30, and the expansion component 30 is used to expand screen width.Specifically, component is expanded
30 include two piece of second curtain, 31, two actuators (not shown) of rotating shaft 32 and the 3rd, wherein, two piece of second curtain 31 is set
Opposite sides in the horizontal direction of the first curtain 11；Rotating shaft 32 is parallel with support column 21, and is connected to the second curtain 31
Outer ledge on；3rd actuator is arranged on the rear side of the second curtain 31, and the 3rd actuator is rotatablely connected with rotating shaft 31,
For driving the second curtain 31 to move and drive the second curtain 31 32 to rotate around the shaft.Specifically, the second curtain 31 has certain
Rigidity, or support member is provided with both sides of the edge up and down in the second curtain 31, the support member is fixedly connected with rotating shaft 32 so that
Second curtain 31 can be in the drive lower swing of rotating shaft 32, and the second curtain 31 is parallel with the first curtain 11, the second curtain 31
The edge at edge and the first curtain 11 is interspersed, and the height of the second curtain 31 is complete equal to the in the vertical direction of the first curtain 11
Height after expansion, the first curtain 11 can form complete large-size projecting screen after being fully deployed with two piece of second curtain 31；
3rd actuator is motor, preferably stepper motor or servomotor.In use, the 3rd actuator can coordinate fixed switch or distant
Control switch drives rotating shaft 32 to rotate, and rotating shaft 32 drives the second curtain 31 to swing the Curvature varying for coordinating the first curtain 11, so as to protect
The projection screen that high quality is formed on the curtain formed in the first curtain 11 and the second curtain 31 is demonstrate,proved, improve user uses body
Test effect.
Preferably, referring to Fig. 2, a kind of embodiment as projection screen device provided by the invention, above-mentioned
Second curtain 31 is arranged on the front side of the first curtain 11, and barrier effect is formed to the left and right sides edge of the first curtain 11.Use
When, the second curtain 31 can be used for individually projection word, pattern or image, for decorating or setting off by contrast theme.
Further, a kind of embodiment as projection screen device provided by the invention, above-mentioned projection screen
Device 1 also includes sensor, and the sensor electrically connects with the first drive component 23, the second drive component 24 and the 3rd actuator,
For realizing the first drive component 23, the second drive component 24 and the collaboration linkage of the 3rd actuator, i.e., in the first drive component 23
While driving the first curtain 11 change area and curvature with the second drive component 24, pass through the actuator of sensor-triggered the 3rd and drive
The second curtain 12 is changed angle, and then ensure to form high quality on the curtain of the first curtain 11 and the second curtain 31 composition
Projection screen, improve the usage experience effect of user.
The foregoing is merely illustrative of the preferred embodiments of the present invention, and is not intended to limit the invention, all the present invention's
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. projection screen device, it is characterised in that：Including support driving mechanism, and the support driving mechanism can be contained in Interior screen assembly；The screen assembly includes the first curtain, and is connected on the first curtain opposite end and difference respectively Be movably connected on the support driving mechanism has flexible two spools for being used to wind first curtain；The support is driven Motivation structure includes support column, is movably connected on two support arms of the support column opposite end, is arranged between two support arms The first drive component for being used to drive two support arms to move along the support column every place, and it is connected to two support arms Side be used to drive two spools while make 2 second drive components of radially bending, first drive component and institute Support arm drive connection is stated, second drive component is connected with the spool.
- 2. projection screen device according to claim 1, it is characterised in that：The screen assembly is also described including being arranged at The torsion spring for being used to drive the spool to make axial rotation on spool.
- 3. projection screen device according to claim 2, it is characterised in that：First drive component includes being sheathed on institute State support column periphery and opposite end is resisted against the elastic components of two support arms respectively, be connected to the support arm first passes Moving part, and the first actuator with first driving member drive connection.
- 4. projection screen device according to claim 2, it is characterised in that：The support driving mechanism also includes being fixedly arranged on The two support arm opposite ends and four guide rails intersected with the support arm, the end of the spool connect with guide rail activity Connect.
- 5. projection screen device according to claim 4, it is characterised in that：Second drive component includes being sheathed on institute State multiple housings of spool periphery, connect the hinge of adjacent two housing, and be arranged on the housing be used for drive institute The second actuator that housing rotates around the hinge is stated, the opposite end of the spool, which is respectively protruding into, is fixedly arranged on the support arm phase To in two guide rails at both ends.
- 6. projection screen device according to claim 4, it is characterised in that：Second drive component is included described in connection Connector in the middle part of spool and in the middle part of the support arm, and two for driving that the spool opposite end moves along the guide rail Second actuator, one end of second actuator are flexibly connected with one end of the spool, second actuator it is another End is slidably connected with the guide rail.
- 7. projection screen device according to claim 6, it is characterised in that：Offer chute on the guide rail, described Two drive components also include the pulley for being rotationally connected with the second actuator other end, and the pulley is placed in the chute It is interior.
- 8. the projection screen device according to any one of claim 1 to 7, it is characterised in that：The vertical side in support column edge To extension, the support arm is horizontally extending.
- 9. projection screen device according to claim 8, it is characterised in that：The projection screen device also includes being used to prolong The extension device of screen width is opened up, the expansion component includes being arranged at opposite sides in the horizontal direction of first curtain 2 second curtains, parallel to the support column and two rotating shafts that are connected on the outer ledge of 2 second curtains, and set In second curtain rear side be used to drive second curtain mobile and the 3rd actuator around the axis of rotation, institute Rotating shaft is stated to be rotatablely connected with the 3rd actuator.
- 10. projection screen device according to claim 9, it is characterised in that：The projection screen device also includes being used for Realize the sensor of first drive component, second drive component and the 3rd actuator collaboration linkage, described the One drive component, second drive component and the 3rd actuator electrically connect with the sensor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283888.4A CN107765502B (en) | 2017-12-07 | 2017-12-07 | Projection screen device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283888.4A CN107765502B (en) | 2017-12-07 | 2017-12-07 | Projection screen device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107765502A true CN107765502A (en) | 2018-03-06 |
| CN107765502B CN107765502B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711283888.4A Active CN107765502B (en) | 2017-12-07 | 2017-12-07 | Projection screen device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108428374A (en) * | 2018-06-19 | 2018-08-21 | 华北理工大学 | A kind of intelligent tutoring apparatus for demonstrating |
| CN110134155A (en) * | 2019-04-24 | 2019-08-16 | 薄涛 | Follow curtain, control method, device and storage medium |
| CN110376838A (en) * | 2019-08-02 | 2019-10-25 | 江苏久誉显示科技有限公司 | A kind of horizontal folding electric screen |
| CN113257057A (en) * | 2021-05-14 | 2021-08-13 | 广州软件学院 | Movable teaching system for computer software engineering |
| CN113674560A (en) * | 2021-08-26 | 2021-11-19 | 河北建材职业技术学院 | Multimedia teaching is with throwing screen device |
| CN114241918A (en) * | 2021-12-28 | 2022-03-25 | 深圳创维－Rgb电子有限公司 | Display screen structure and TV set that flexible was adjusted |
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| CN108428374A (en) * | 2018-06-19 | 2018-08-21 | 华北理工大学 | A kind of intelligent tutoring apparatus for demonstrating |
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| CN110376838B (en) * | 2019-08-02 | 2024-01-05 | 江苏久誉显示科技有限公司 | Electric curtain capable of being opened and closed horizontally |
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| CN114241918B (en) * | 2021-12-28 | 2024-04-30 | 深圳创维－Rgb电子有限公司 | Flexible display screen structure and television of adjusting |
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