CN114863732B - Visual conveying plane design specialty teaching display device - Google Patents
Visual conveying plane design specialty teaching display device Download PDFInfo
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- CN114863732B CN114863732B CN202210519975.XA CN202210519975A CN114863732B CN 114863732 B CN114863732 B CN 114863732B CN 202210519975 A CN202210519975 A CN 202210519975A CN 114863732 B CN114863732 B CN 114863732B
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- 230000000007 visual effect Effects 0.000 title claims abstract description 34
- 239000004744 fabric Substances 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 13
- 244000309464 bull Species 0.000 claims description 10
- 239000005338 frosted glass Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003086 colorant Substances 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention relates to the field of visual transmission design teaching, in particular to a visual transmission plane design professional teaching display device which comprises a movable base, wherein a rotating rod is movably connected to the top of the movable base, a base plate is fixedly sleeved on the outer wall of the rotating rod, a screen component is arranged on the front side wall of the base plate, a steel frame is arranged at the top of the movable base, shielding cloth is sleeved on the outer wall of the steel frame, a light adjusting component is arranged at the top of a telescopic rod, a middle connecting gear is arranged in an inner cavity of the movable base, a first gear and a second gear are connected to two sides of the middle connecting gear in a meshed mode, the first gear is sleeved on the outer wall of the rotating rod, and the second gear is sleeved on the outer wall of the bottom of the light adjusting component. According to the invention, the light adjusting assembly is reasonably designed, so that the shielding cloth can be unfolded, the influence of external environment light is reduced, different light rays are emitted through the light adjusting assembly to change the background color of the curtain, and different visual effects of the teaching object are observed under different background colors.
Description
Technical Field
The invention relates to the field of visual transmission design teaching, in particular to a visual transmission plane design professional teaching display device.
Background
Visual communication design is an active behavior for transmitting specific things through visual forms, and mainly comprises the aspects of sign design, advertisement design, package design, in-store and out-of-store environment design, enterprise image design and the like. The planar design generally needs to show teaching articles such as symbols, images and the like, and the teaching articles can be flexibly shown on a blackboard in a mutual attraction mode through the adsorption effect of the magnets.
However, the existing teaching display device cannot meet the requirement of observing different visual effects brought by the teaching objects under different background colors, so that the teaching of visual transmission plane design is incomplete.
Disclosure of Invention
The invention aims to provide a visual transmission plane design professional teaching display device, which can solve the problem that the conventional teaching display device cannot change background color to generate incomplete teaching projects.
In order to achieve the above-mentioned purpose, the application provides a visual transmission plane design specialty teaching display device, including moving the base, the top activity switching of moving the base is provided with the bull stick, the outer wall of bull stick is fixed to be cup jointed the base plate, the preceding lateral wall of base plate is provided with screen subassembly, the top of moving the base is provided with the steelframe, the outer wall of steelframe has cup jointed and has sheltered from cloth, shelter from the cloth and offered the viewing aperture, the viewing aperture department that shelters from cloth is provided with the fender cover, the top of telescopic link is provided with light regulation subassembly, light regulation subassembly comprises the light emitter that sends red, green, blue three-color, the inner chamber of moving the base is provided with intermediate connection gear, intermediate connection gear's both sides meshing is connected with first gear and second gear, first gear cup joints the outer wall at the bull stick, the second gear cup joints the outer wall in light regulation subassembly bottom.
Optionally, the screen assembly includes soft magnet and curtain, soft magnet sets up the lateral wall at the base plate, the curtain sets up on soft magnet's another lateral wall.
Based on the technical characteristics, in the display process, the displayed plane can be adsorbed on the curtain through the soft magnet after the magnet is installed on the back according to the traditional mode, wherein the curtain adopts white cloth.
Optionally, the light regulation subassembly includes shell body, spliced pole, beam unit and printing opacity glass, the outer wall of spliced pole cup joints on the second gear, the shell body is located the top of spliced pole, beam unit evenly distributed is on the inner chamber lateral wall of shell body, printing opacity glass sets up at the shell body lateral wall relative with beam unit.
Based on the technical characteristics, the connecting column is connected with the second gear to drive the outer shell to rotate, and the light beam unit emits light rays to emit through the light-transmitting glass to provide background light.
Optionally, the light beam unit includes three light emitting devices of red, green and blue.
Based on the technical characteristics, the red, green and blue light emitting devices emit light by rotating proper numbers, and the color of the background light can be adjusted according to the principle of three primary colors of light.
Optionally, the three light emitting devices of red, green and blue of the light beam unit adopt current-adjustable LED light sources.
Based on the technical characteristics, the intensity of light emitted by the red, green and blue light emitting devices can be adjusted by changing the current, so that the brightness and the color of the mixed background light can be flexibly changed.
Optionally, the light-transmitting glass is ground glass.
Based on the technical characteristics, the frosted glass has the special structure, so that the light rays can be diffusely reflected in the process of passing the light rays, and the uniformity and the mixing degree of the light rays passing through the frosted glass are improved.
Optionally, the bottom surface of base plate is provided with the electro-magnet, the top of moving the base is provided with protruding magnetic iron ring, protruding magnetic iron ring's top is convex circular arc, just the bottom of electro-magnet with protruding magnetic iron ring's top meets.
Based on the technical characteristics, the electromagnet is powered off, so that the substrate can be rotated conveniently, and after the electromagnet is powered on, the electromagnet adsorbs the magnetic iron ring, so that the substrate is kept stable.
Optionally, the shielding cloth is black opaque cloth.
Based on the technical characteristics, external light is reduced to enter the inside of the shielding cloth, and the internal visual effect is influenced.
Optionally, the draw-in groove has been seted up to the lateral wall of bull stick, the base plate is provided with the protrusion muscle with draw-in groove looks adaptation with the junction of bull stick.
Based on the technical characteristics, when the substrate is pushed to rotate, the cooperation of the protruding ribs and the clamping grooves is improved, and the synchronization rate of the rotating rod and the substrate can be effectively improved.
Optionally, one end of the shielding sleeve, which is far away from the shielding cloth, adopts a rubber elastic band.
Based on the technical characteristics, when the head of a student stretches into the blocking sleeve to observe the inside, the rubber elastic band of the blocking sleeve contracts through the resilience force, so that the possibility of entering external light is reduced.
Compared with the prior art, the visual transmission plane design specialized teaching display device provided by the invention has the following beneficial effects:
1. according to the invention, the light adjusting assembly is reasonably designed, so that the shielding cloth can be unfolded, the influence of external environment light is reduced, different light rays are emitted by the light adjusting assembly to change the background color of the curtain, different visual effects of teaching objects are observed under different background colors, and teaching items are enriched;
2. the invention can disconnect the electricity of the electromagnet, can facilitate the rotation of the substrate, and after the electromagnet is electrified, the electromagnet adsorbs the magnetic iron ring to keep the substrate stable, thereby facilitating the observation of teaching articles under different visual angles in teaching;
3. when the curtain is rotated to adjust the viewing angle, the substrate is driven to rotate, the rotating rod drives the first gear to rotate, and the intermediate connecting gear meshed with the first gear rotates to drive the second gear to rotate, so that the light adjusting component and the substrate rotate in the same direction, the first gear and the second gear are kept the same, the rotating angle is the same, the light adjusting component always irradiates the curtain at the same direct angle, and the influence on the visual effect after the deviation of the direct angle is reduced.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic view of a structure of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a cross-sectional view of the present invention in the state of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3A in accordance with the present invention;
FIG. 5 is a partial cross-sectional view taken at C-C of FIG. 4 in accordance with the present invention;
fig. 6 is an enlarged view of a portion of fig. 3B in accordance with the present invention.
Icon: 1. a moving base; 2. a rotating rod; 3. a substrate; 4. a screen assembly; 401. a soft magnet; 402. a curtain; 5. a steel frame; 6. a shielding cloth; 601. an observation window; 7. a light adjustment assembly; 701. an outer housing; 702. a connecting column; 703. a beam unit; 704. light-transmitting glass; 8. the middle is connected with a gear; 9. a first gear; 10. a second gear; 11. a blocking sleeve; 12. an electromagnet; 13. protruding magnetic iron ring.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of a plurality of "a number" is two or more, unless explicitly defined otherwise.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are therefore not intended to limit the scope of the invention, which is defined by the claims, but are not to be limited to the specific details disclosed herein. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the present application to which they may be applied, but rather to modify or adapt the relative relationship without materially altering the technical context.
The invention is described in further detail below with reference to fig. 1-6.
Referring to the drawings of the specification and figures 1-3, a visual transmission plane design specialty teaching display device comprises a movable base 1, wherein a rotating rod 2 is movably connected to the top of the movable base 1, a base plate 3 is fixedly sleeved on the outer wall of the rotating rod 2, a screen assembly 4 is arranged on the front side wall of the base plate 3, and the base plate 2 can rotate along the rotating rod 2 by applying external force to the two sides of the base plate 3, so that the screen assembly 4 is driven to rotate. The top of moving base 1 is provided with steelframe 5, the outer wall of steelframe 5 has cup jointed and has sheltered from cloth 6, shelter from cloth 6 and offered viewing aperture 601, shelter from the viewing aperture 601 department of cloth 6 and be provided with the cover 11, wherein shelter from cloth 6 and adopt black opaque cloth, reduce outside light and get into the inside of shelter from cloth 6, influence inside visual effect, shelter from cloth 6 and can translate on steelframe 5, thereby realize the cover to moving base 1 top, and the one end that shelters from cloth 6 was kept away from to cover 11 adopts the rubber elastic cord, when the learner's head stretches into cover 11 and observes inside, the rubber elastic cord of cover 11 returns the elasticity shrink, thereby reduce the possibility that external light got into. The top of telescopic link 7 is provided with light regulation subassembly 7, and light regulation subassembly 7 comprises the illuminator that sends red, green, blue three-colour, and the inner chamber of removal base 1 is provided with intermediate connection gear 8, and intermediate connection gear 8's both sides meshing is connected with first gear 9 and second gear 10, and first gear 9 cup joints the outer wall at bull stick 2, and second gear 10 cup joints the outer wall at light regulation subassembly 7 bottom.
Referring to fig. 4 to 5 of the drawings, the screen assembly 4 includes a soft magnet 401 and a curtain 402, the soft magnet 401 is disposed on a side wall of the substrate 3, and the curtain 402 is disposed on the other side wall of the soft magnet 401. During the display process, the display plane can be absorbed on the curtain 402 through the soft magnet 401 after the magnet is installed on the back according to the conventional manner, wherein the curtain 402 adopts white cloth.
Referring to fig. 6 of the drawings, the light adjusting assembly 7 includes an outer housing 701, a connection post 702, a light beam unit 703 and a transparent glass 704, wherein the outer wall of the connection post 702 is sleeved on the second gear 10, the outer housing 701 is located at the top of the connection post 702, the light beam unit 703 is uniformly distributed on the inner cavity side wall of the outer housing 701, and the transparent glass 704 is disposed on the side wall of the outer housing 701 opposite to the light beam unit 703. The connecting post 702 is connected with the second gear 10 to drive the outer housing 701 to rotate, and the light beam unit 703 emits light through the transparent glass 704 to provide background light. The light beam unit 703 includes three light emitting devices of red, green and blue. The red, green and blue light emitting devices emit light by rotating proper numbers, and the color of the background light can be adjusted according to the principle of three primary colors of light. The three light emitting devices of red, green and blue of the light beam unit 703 adopt LED light sources with adjustable currents, and the light intensities emitted by the three light emitting devices of red, green and blue can be adjusted by changing the current, so that the brightness and the color of the mixed background light can be flexibly changed. The light-transmitting glass 704 is made of frosted glass, and the frosted glass has a special structure, so that light rays can be diffusely reflected in the process of passing through the frosted glass, and the uniformity and the mixing degree of light ray distribution are improved.
Referring to fig. 3-4 of the drawings of the specification, an electromagnet 12 is arranged on the bottom surface of a substrate 3, a protruding magnetic iron ring 13 is arranged on the top of a moving base 1, the top of the protruding magnetic iron ring 13 is in a protruding circular arc shape, and the bottom of the electromagnet 12 is connected with the top of the protruding magnetic iron ring 13. The electromagnet 12 is disconnected, so that the substrate 3 can be rotated conveniently, and after the electromagnet 12 is electrified, the electromagnet 12 adsorbs the magnetic iron ring 13, so that the substrate 3 is kept stable.
Referring to figure 5 of the drawings, a clamping groove is formed in the side wall of the rotating rod 2, and a protruding rib matched with the clamping groove is arranged at the joint of the base plate 3 and the rotating rod 2. When the substrate 3 is pushed to rotate, the cooperation of the protruding ribs and the clamping grooves is improved, and the synchronization rate of the rotating rod 2 and the substrate 3 can be effectively improved.
Working principle:
embodiment one: referring to fig. 1 of the drawings, the shielding cloth 6 is retracted at this time, so that the screen assembly 4 at the top of the movable base 1 is exposed, and the light adjusting assembly 7 is not electrified to emit light. When carrying out the visual transmission planar design teaching, the teacher will place a teaching article with a magnet mounted on the back on the curtain 402 of the screen assembly 4, and the teaching article can make symbols, images and the like. Wherein can break off the electricity of electro-magnet 12, can make things convenient for the base plate 3 to rotate, after electro-magnet 12 circular telegram, electro-magnet 12 adsorbs magnetism hoop 13, keeps the stability of base plate 3 to make things convenient for teaching to observe teaching article under different visual angles.
Embodiment two: referring to fig. 2 of the drawings, the shielding cloth 6 is unfolded to completely shield the top of the movable base 1, and the light adjusting component 7 is electrified to emit light. At this time, the observer needs to put the head into the shielding sleeve 8, observe the interior through the observation port 601, and the light adjusting component 7 emits light at this time, and after the observer irradiates the white curtain 402, the background color of the curtain 402 is changed, so that the visual effect of the teaching object under different background colors is observed. Wherein the same as embodiment one can break the electricity of electro-magnet 12 equally, can make things convenient for the base plate 3 to rotate, after electro-magnet 12 circular telegram, electro-magnet 12 adsorbs magnetism hoop 13, keep the stability of base plate 3, thereby make things convenient for teaching observe teaching article under different visual angles, and in this embodiment, when driving base plate 3 and rotating, bull stick 2 drives first gear 9 rotation, with the rotation of first gear 9 engaged intermediate connection gear 8, thereby drive the rotation of second gear 10, thereby make light regulation subassembly 7 and base plate 3 go on the syntropy rotation, keep first gear 9 and second gear 10 the same, rotatory angle also can be the same, thereby make light regulation subassembly 7 always shine curtain 402 with the same direct angle, reduce the influence of visual effect behind the deviation takes place for the direct angle.
Wherein the light emission of the light adjusting assembly 7 is performed by a light beam unit 703, and the light beam unit 703 comprises three light emitting devices of red, green and blue. The red, green and blue light emitting devices emit light by rotating proper numbers, and the color of the background light can be adjusted according to the principle of three primary colors of light. The three light emitting devices of red, green and blue of the light beam unit 703 adopt LED light sources with adjustable currents, and the light intensities emitted by the three light emitting devices of red, green and blue can be adjusted by changing the current, so that the brightness and the color of the mixed background light can be flexibly changed. The light-transmitting glass 704 is made of frosted glass, and the frosted glass has a special structure, so that light rays can be diffusely reflected in the process of passing through the frosted glass, and the uniformity and the mixing degree of light ray distribution are improved.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (9)
1. The utility model provides a visual transmission plane design specialty teaching display device, includes removal base (1), its characterized in that: the top movable switching of mobile base (1) is provided with bull stick (2), the outer wall of bull stick (2) has fixedly cup jointed base plate (3), the preceding lateral wall of base plate (3) is provided with screen subassembly (4), the top of mobile base (1) is provided with steelframe (5), the outer wall of steelframe (5) has cup jointed and has sheltered from cloth (6), shelter from cloth (6) and offered viewing aperture (601), be provided with in viewing aperture (601) department of sheltering from cloth (6) and keep off cover (11), the top of telescopic link is provided with light regulation subassembly (7), light regulation subassembly (7) are by sending out the illuminator of red, green, blue three-color, the inner chamber of mobile base (1) is provided with intermediate connection gear (8), the both sides meshing of intermediate connection gear (8) are connected with first gear (9) and second gear (10), first gear (9) cup joint the outer wall at bull stick (2), second gear (10) cup joint the outer wall in light regulation subassembly (7) bottom;
the light adjusting component (7) comprises an outer shell (701), a connecting column (702), a light beam unit (703) and light-transmitting glass (704), wherein the outer wall of the connecting column (702) is sleeved on the second gear (10), the outer shell (701) is positioned at the top of the connecting column (702), the light beam unit (703) is uniformly distributed on the inner cavity side wall of the outer shell (701), and the light-transmitting glass (704) is arranged on the side wall of the outer shell (701) opposite to the light beam unit (703).
2. The visual communication planar design specialty teaching display device of claim 1, wherein: the screen assembly (4) comprises a soft magnet (401) and a curtain (402), wherein the soft magnet (401) is arranged on the side wall of the substrate (3), and the curtain (402) is arranged on the other side wall of the soft magnet (401).
3. The visual communication planar design specialty teaching display device of claim 1, wherein: the light beam unit (703) comprises three light emitting means, red, green and blue.
4. A visual conveying planar design specialty teaching display apparatus as claimed in claim 3 wherein: the three light emitting devices of red, green and blue of the light beam unit (703) adopt LED light sources with adjustable currents.
5. The visual communication planar design specialty teaching display device of claim 1, wherein: the light-transmitting glass (704) adopts frosted glass.
6. The visual communication planar design specialty teaching display device of claim 1, wherein: the bottom surface of base plate (3) is provided with electro-magnet (12), the top of moving base (1) is provided with protruding magnetic iron ring (13), the top of protruding magnetic iron ring (13) is convex circular-arc, just the bottom of electro-magnet (12) with the top of protruding magnetic iron ring (13) meets.
7. The visual communication planar design specialty teaching display device of claim 1, wherein: the shielding cloth (6) is black opaque cloth.
8. The visual communication planar design specialty teaching display device of claim 1, wherein: the clamping groove is formed in the side wall of the rotating rod (2), and a protruding rib matched with the clamping groove is arranged at the joint of the base plate (3) and the rotating rod (2).
9. The visual communication planar design specialty teaching display device of claim 1, wherein: one end of the shielding sleeve (11) far away from the shielding cloth (6) adopts a rubber elastic band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519975.XA CN114863732B (en) | 2022-05-13 | 2022-05-13 | Visual conveying plane design specialty teaching display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519975.XA CN114863732B (en) | 2022-05-13 | 2022-05-13 | Visual conveying plane design specialty teaching display device |
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| CN114863732A CN114863732A (en) | 2022-08-05 |
| CN114863732B true CN114863732B (en) | 2024-04-09 |
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| CN114863732A (en) | 2022-08-05 |
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