Multimedia english teaching device

Abstract

This invention provides a multimedia English teaching device, belonging to the technical field of teaching devices. It includes a storage cover and a multimedia projection screen located below and to its side. The storage cover is made of a metal shell and consists of a horizontal straight section, an arc section, and a vertical straight section. The arc section is located between and fixedly connected to the horizontal and vertical straight sections. Each of the horizontal, arc, and vertical straight sections has a storage cavity inside, and the bottom of the vertical straight section has a notch. When the side support plate and side light-blocking cloth in the side light-blocking assembly are rotated 90 degrees and opened, they are positioned outside the multimedia projection screen and are vertical, effectively blocking ambient diffuse light from the sides of the multimedia projection screen and reducing direct ambient light irradiation on the screen surface, thus minimizing overall light interference.

Description

Technical Field

[0001] This invention belongs to the field of teaching device technology, specifically relating to a multimedia English teaching device. Background Technology

[0002] Multimedia English teaching is an English teaching support model that combines modern multimedia technology. By integrating diverse information such as text, sound, pictures, and videos to optimize the teaching process, it has become an important direction for English teaching reform. In the process of multimedia English teaching, the use of projectors greatly increases the convenience of teaching. Because the retractable screen does not take up blackboard space, the projector can project courseware and videos during multimedia teaching. Compared with a white wall, the screen can better improve the contrast and clarity of courseware and videos.

[0003] However, during multimedia English teaching, the intensity of natural daylight far exceeds the brightness of ordinary projectors. Without blocking out the light, the contrast of the projected image will decrease by more than 50%, resulting in an overall washed-out appearance and a significant loss of detail in dark areas. This makes it difficult for students to see details clearly and increases eye strain. To address this, the common approach is to draw the classroom curtains to darken the overall environment. While this improves the clarity of the projected image, the dim environment makes it difficult to see supplementary books, rendering them ineffective. Students cannot compare the projected content with the textbook content, making it difficult to remember key points and reducing the effectiveness of English learning. Furthermore, the overall dim environment causes students' pupils to dilate, making blue light damage more pronounced and causing continuous tension in the ciliary muscles, which can easily lead to eye strain and myopia.

[0004] Therefore, a multimedia English teaching device is proposed. Summary of the Invention

[0005] This invention provides a multimedia English teaching device, the purpose of which is to solve the problems mentioned above.

[0006] This invention provides a multimedia English teaching device, including a storage cover and a multimedia projection screen below it. The storage cover is made of a metal shell and consists of a horizontal straight section, an arc section, and a vertical straight section. The arc section is located between and fixedly connected to the horizontal and vertical straight sections. Each of the horizontal, arc, and vertical straight sections has a storage cavity inside. The bottom of the vertical straight section has a notch. Two side cover plates are symmetrically fixed to the outer wall of the storage cover by bolts. Each of the two side cover plates has a mounting block near the top on its outer wall. A guide groove is formed on the outer wall of the side cover facing the storage cover. The opening path of the guide groove matches the horizontal, arc, and vertical straight sections. A side light blocking assembly and a top light blocking assembly are provided inside the storage cover.

[0007] Furthermore, the side light-blocking assembly includes several movable platforms hinged at equal intervals. A support seat is provided at the center of one outer wall of each movable platform. The top of the support seat has a movable cavity, and an arc segment is provided at the outer side of the top of the support seat near the movable cavity. A side support plate is movably connected inside the movable cavity. A traction head is provided on the side end of the side support plate away from the movable platform. A through hole is provided on the outer wall of the side support plate adjacent to the traction head. Two grooves are symmetrically provided on the outer wall of the side support plate. A rotating shaft is provided at the center of the inner side wall of the groove. The rotating shaft is rotatably connected to the support seat. A torsion spring is provided between the groove and the movable cavity. A guide block is provided at the center of the other outer wall of the movable platform. The guide block is located inside the guide groove and slides with the guide groove. A connecting cloth is provided between two adjacent movable platforms, and the two adjacent movable platforms are hinged by a hinge. A side light-blocking cloth is provided between two adjacent support seats.

[0008] Furthermore, the top light-blocking assembly includes a horizontal platform located on one side of one of the mounting blocks. The top of the horizontal platform has several equally spaced embedding slots, and the bottom and a side wall of the bottom of the horizontal platform are provided with anti-fall-off plates. A top support plate is movably connected inside the embedding slots. The top support plate is located above the side support plate, and two grooves are symmetrically formed on the outer side wall of the top support plate. A rotating shaft is located at the center of one inner wall of each groove, and a torsion spring is provided between the groove and the embedding slot. A top light-blocking cloth is provided between two adjacent top support plates. A spring is provided between the horizontal platform and one inner wall of the storage cover. Two guide blocks are symmetrically arranged on the outer side wall of the horizontal platform. The guide blocks are located inside the guide grooves and slide in contact with them. The horizontal platform and one of the mounting blocks are hinged together by a hinge.

[0009] Furthermore, a lower horizontal plate is provided on one side of the outer wall of another of the mounting blocks, and two hooks are symmetrically provided at the bottom of the lower horizontal plate; By adopting the above technical solution and using the hook, the position of the side light blocking component can be fixed after the storage cover of the side light blocking component is pulled out, ensuring that the side light blocking component is in a vertical state and is set on the outside of the multimedia projection screen. When the side support plate and the side light blocking cloth in the side light blocking component are rotated 90 degrees to open, they can stably block the light on the outside of the multimedia projection screen.

[0010] Furthermore, a limiting pressure plate is provided on the top of the inner sidewall of the horizontal straight section, the arc section and the vertical straight section in the storage cover. The limiting pressure plate is located on the top of the top support plate and abuts against the top support plate. By adopting the above technical solution, the top support plate can be limited by the limiting pressure plate. When the top support plate moves into the storage cover, it can be rotated under the pressure of the limiting pressure plate and enter the storage cover, thus completing the automatic storage of the top support plate.

[0011] Furthermore, the cross-sections of the guide block one, guide block two, and guide groove are all T-shaped, and both guide block one and guide block two are in contact with the guide groove; By adopting the above technical solution, using T-shaped guide block one, guide block two and guide groove, T-shaped guide block one and guide block two can be limited by the guide groove, preventing guide block one and guide block two from falling horizontally out of the guide groove, and ensuring that guide block one and guide block two move stably along the set trajectory.

[0012] Furthermore, the notch allows the moving platform and the horizontal platform to pass through, and the cross-section of the combined horizontal platform and the anti-fall plate, as well as the cross-section of the lower horizontal plate, are larger than the cross-section of the notch. By adopting the above technical solution, the notch allows the moving stage and horizontal platform to pass through, thereby moving the side and top light blocking components on the moving stage and horizontal platform to the outside of the storage cover. This allows the side and top light blocking components to open, thus blocking the multimedia projection screen and reducing ambient light directly hitting the screen surface. This reduces overall light interference, improves image contrast to some extent, alleviates the problem of whitening and graying, and prevents the horizontal platform from falling out of the storage cover by utilizing the difference in cross-section. It also prevents the lower horizontal plate from entering the storage cover.

[0013] Furthermore, the side shading cloth, top shading cloth, and connecting cloth are all made of black and elastic shading cloth; By adopting the above technical solution, using black, black-painted, and elastic side shading cloth, top shading cloth, and connecting cloth, the side shading cloth, top shading cloth, and connecting cloth can deform during position changes, thereby ensuring shading performance.

[0014] The beneficial effects of this invention are as follows: 1. This invention utilizes a side-shielding light assembly that can be stored in the top space of the classroom. It can be deployed according to multimedia teaching without affecting traditional blackboard / whiteboard teaching. After the side support plate and side light-shielding cloth in the side-shielding light assembly are rotated 90 degrees and opened, they are positioned outside the multimedia projection screen and are perpendicular to it. This can block ambient diffuse light from the sides of the multimedia projection screen, reducing direct ambient light from illuminating the screen surface, thus reducing overall light interference, improving image contrast to some extent, alleviating the problem of whitening and graying, and enhancing the detail of the projected image. There is no need to draw the curtains, keeping the classroom bright, which is convenient for multimedia English teaching to coordinate with textbook content and also helps protect students' eyes.

[0015] 2. This invention utilizes a top support plate and a top light-blocking cloth in the top light-blocking assembly, which, when unfolded, are perpendicular to the multimedia projection screen. This allows for the blocking of the top of the multimedia projection screen, directly blocking the direct light from the overhead light and preventing the screen from being directly illuminated by the light, thus greatly improving the effect. In conjunction with the side light-blocking assembly, a dome-shaped light-blocking structure can be formed, further enhancing the light-blocking effect. Moreover, the retractable structure does not occupy the space in front of the viewer, improving the overall aesthetics and usability.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the cooperation between the side light blocking component and the top light blocking component according to an embodiment of the present invention; Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged diagram of point A in the diagram; Figure 4 This is a partial cross-sectional three-dimensional schematic diagram of the storage cover according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the side-blocking light assembly structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the top-blocking light assembly structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the cooperation between the support base and the side support plate in an embodiment of the present invention; Figure 8 This is a three-dimensional cross-sectional schematic diagram of the horizontal platform according to an embodiment of the present invention; Reference numerals: 1. Storage cover; 11. Horizontal straight section; 12. Arc section; 13. Vertical straight section; 14. Storage cavity; 15. Notch; 16. Limiting pressure plate; 2. Side cover plate; 21. Mounting block; 22. Guide groove; 3. Side light blocking assembly; 31. Moving platform; 32. Support seat; 321. Movable cavity; 322. Arc section; 33. Side support plate; 331. Groove one; 332. Rotating shaft one; 333. Torsion spring one; 34. Pulling 35. Header; 36. Side light-blocking cloth; 37. Connecting cloth; 38. Guide block one; 4. Hinge one; 5. Top light-blocking assembly; 6. Horizontal platform; 7. Embedded groove; 8. Anti-fall plate; 9. Top support plate; 10. Groove two; 11. Rotating shaft two; 12. Torsion spring two; 13. Top light-blocking cloth; 14. Spring; 15. Guide block two; 16. Hinge two; 17. Lower horizontal plate; 18. Hook; 19. Multimedia projection screen. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Reference Figure 1-5 and Figure 7 This invention provides a multimedia English teaching device, including a storage cover 1 and a multimedia projection screen 6 below it. The storage cover 1 is made of a metal shell and is composed of a horizontal straight section 11, an arc section 12 and a vertical straight section 13. The arc section 12 is located between the horizontal straight section 11 and the vertical straight section 13 and is fixedly connected to them. The horizontal straight section 11, the arc section 12 and the vertical straight section 13 in the storage cover 1 are all provided with storage cavities 14. The bottom of the vertical straight section 13 in the storage cover 1 is provided with a notch 15. Two side cover plates 2 are symmetrically fixed to the outer wall of the storage cover 1 by bolts. The outer wall of the two side cover plates 2 is provided with mounting blocks 21 near the top. The outer wall of the side cover plate 2 facing the storage cover 1 is provided with a guide groove 22. The opening path of the guide groove 22 matches the horizontal straight section 11, the arc section 12 and the vertical straight section 13. The storage cover 1 is provided with a side light blocking component 3. The side light-blocking assembly 3 includes several movable platforms 31 that are hinged at equal intervals. A support 32 is provided at the center of one outer wall of each movable platform 31. A movable cavity 321 is formed on the top of the support 32, and an arc segment 322 is provided on the top of the support 32 near the outer side of the movable cavity 321. A side support plate 33 is movably connected inside the movable cavity 321. A traction head 34 is provided on the side end of the side support plate 33 away from the movable platform 31. A through hole is formed on the outer wall of the side support plate 33 adjacent to the traction head 34. Two grooves 331 are symmetrically formed on the outer wall of the side support plate 33. A rotating shaft 332 is provided at the center of the inner side wall of the groove 331. The rotating shaft 332 is rotatably connected to the support 32. A torsion spring 333 is provided between the groove 331 and the movable cavity 321. The other side of the movable platform 31... A guide block 37 is provided at the center of the outer wall. The guide block 37 is located inside the guide groove 22 and slides with the guide groove 22. A connecting cloth 36 is provided between two adjacent moving platforms 31, and the two adjacent moving platforms 31 are hinged by a hinge 38. A side light-shielding cloth 35 is provided between two adjacent support seats 32. A lower horizontal plate 5 is provided on one side of the outer wall of another mounting block 21. Two hooks 51 are symmetrically provided at the bottom of the lower horizontal plate 5. By using the hooks 51, the position of the side light-shielding assembly 3 can be fixed after the storage cover 1 is pulled out of the side light-shielding assembly 3, so that the side light-shielding assembly 3 is in a vertical state and is set on the outside of the multimedia projection screen 6. When the side support plate 33 and the side light-shielding cloth 35 in the side light-shielding assembly 3 are rotated 90 degrees to open, they can stably provide light protection to the outside of the multimedia projection screen 6. To block diffuse or direct light from the sides of the multimedia projection screen 6, this embodiment utilizes a side light-blocking component 3 that can be retracted into the classroom ceiling. This component can be deployed according to multimedia teaching needs without affecting traditional blackboard / whiteboard teaching. After the side support plate 33 and side light-blocking cloth 35 in the side light-blocking component 3 are rotated 90 degrees and opened, they are positioned outside the multimedia projection screen 6 and perpendicular to it. This blocks ambient diffuse light from the sides of the multimedia projection screen 6, reducing direct ambient light on its surface, thus reducing overall light interference, improving image contrast to some extent, alleviating the problem of washed-out or grayish appearance, and enhancing the detail of the projected image. This method eliminates the need to draw the curtains, allowing the classroom to be brightly lit, which facilitates the integration of multimedia English teaching with textbook content and also helps protect students' eyes. Specifically, the storage cover 1 is first installed on the classroom ceiling, and the side light blocking components 3 and 4 are pulled out of the storage cover 1 and positioned outside the multimedia projection screen 6. Under the gravity of the side light blocking components 3 and 4, they adhere to the outside of the multimedia projection screen 6, and the multimedia projection screen 6 is rolled up around the winding mechanism (mounted on the wall). The winding mechanism is used to unfold and roll up the multimedia projection screen 6. During multimedia English teaching, the teaching video is projected onto the multimedia projection screen using a projector. On the screen 6, a rod-shaped tool with a hook-like structure (a round rod with a hook at one end) is used to hook the hook 51, and the lower horizontal plate 5 is pulled downwards. Under the pulling force, several moving platforms 31 are pulled through the notch 15 and moved to the outside of the storage cover 1. Guided by the guide groove 22, the guide block 37 moves along the guide groove 22 and undergoes horizontal linear motion, arc motion, and vertical linear motion, so that the hinged moving platforms 31 move out of the storage cover 1 in sequence. Under the action of gravity, several moving platforms 31 are in a state perpendicular to the horizontal plane, and the hook 51 is hooked onto the column structure installed on the wall, realizing the fixation of the side light blocking component 3. Under the action of the torsion spring 333, the side support... The plate 33 is horizontal with the multimedia projection screen 6. Then, a rod-shaped tool is used to pass through the through holes on the traction head 34 from bottom to top. With the connection of the rod-shaped tool, several side support plates 33 form a whole. Then, the rod-shaped tool pulls several side support plates 33 to rotate 90 degrees synchronously. The side light-shielding cloths 35 on the side support plates 33 rotate synchronously. At this time, the side support plates 33 and the side light-shielding cloths 35 form a 90-degree angle with the multimedia projection screen 6. Then, the rod-shaped tool is fixed in position. The side support plates 33 and the side light-shielding cloths 35 can block the ambient diffuse light on the side of the multimedia projection screen 6, reduce the direct illumination of ambient light on the surface of the multimedia projection screen 6, and reduce the overall light interference.

[0020] Example 2 Reference Figure 1-4 , Figure 6and Figure 8This embodiment of the invention also proposes that the storage cover 1 is internally provided with a top light blocking component 4. The top light blocking component 4 includes a horizontal platform 41 located on one side of one of the mounting blocks 21. The top of the horizontal platform 41 has several equally spaced embedding slots 411, and the bottom of the horizontal platform 41 and the bottom near one side wall are provided with anti-drop plates 412. A notch 15 allows the moving platform 31 and the horizontal platform 41 to pass through. The cross-section of the combined horizontal platform 41 and the anti-drop plate 412 and the cross-section of the lower horizontal plate 5 are larger than the cross-section of the notch 15. By using the notch 15, the moving platform 31 and the horizontal platform 41 can pass through, thereby allowing the side light blocking components 3 and the top light blocking components 4 on the moving platform 31 and the horizontal platform 41 to move to the outside of the storage cover 1, thus enabling... When the side light blocking assembly 3 and the top light blocking assembly 4 are opened, they block the ambient diffuse light around the multimedia projection screen 6, reducing direct ambient light illuminating the surface of the multimedia projection screen 6. This reduces overall light interference, improves image contrast to some extent, and alleviates the problem of whitening and graying. Furthermore, the difference in cross-sections prevents the horizontal platform 41 from falling out of the storage cover 1 and also prevents the lower horizontal plate 5 from entering the storage cover 1. The top support plate 42 is movably connected inside the embedded groove 411. The top support plate 42 is located above the side support plate 33, and two symmetrical grooves 421 are formed on the outer side wall of the top support plate 42. A rotating shaft 422 is located at the center of one inner wall of each groove 421. The groove 421 and the embedded groove... A torsion spring 423 is installed between 411. A top light-blocking cloth 43 is installed between two adjacent top support plates 42. The side light-blocking cloth 35, the top light-blocking cloth 43, and the connecting cloth 36 are all made of black and elastic light-blocking cloth. The inner walls of the side light-blocking cloth 35, the top light-blocking cloth 43, and the connecting cloth 36 are sprayed with matte black paint to improve the light-blocking effect. The black and elastic side light-blocking cloth 35, the top light-blocking cloth 43, and the connecting cloth 36 can deform during position changes to ensure light blocking. A spring 44 is installed between the horizontal platform 41 and one inner wall of the storage cover 1. Two guide blocks 45 are symmetrically arranged on the outer wall of the horizontal platform 41. The guide blocks 45 are located in the guide groove 22. The guide block 37, guide block 45, and guide groove 22 are all T-shaped in cross-section, and guide block 37 and guide block 45 are in close contact with guide groove 22. By using the T-shaped guide block 37, guide block 45, and guide groove 22, the T-shaped guide block 37 and guide block 45 can be limited by the guide groove 22, preventing guide block 37 and guide block 45 from falling horizontally out of guide groove 22, and ensuring that guide block 37 and guide block 45 move stably along the set trajectory. The horizontal platform 41 and one of the mounting blocks 21 are hinged together by hinge 46. Limiting pressure plates 16 are provided on the top of the inner sidewalls of the horizontal straight part 11, the arc part 12, and the vertical straight part 13 in the storage cover 1.The limiting pressure plate 16 is located at the top of the top support plate 42, and the limiting pressure plate 16 abuts against the top support plate 42. The limiting pressure plate 16 can limit the movement of the top support plate 42. When the top support plate 42 moves into the storage cover 1, under the pressure of the limiting pressure plate 16, the top support plate 42 can be rotated and enter the storage cover 1, completing the automatic storage of the top support plate 42. To block direct light from the top of the multimedia projection screen 6, in this embodiment, the top support plate 42 and the top light-blocking cloth 43 in the top light-blocking assembly 4 are unfolded and perpendicular to the multimedia projection screen 6, thus blocking the top of the multimedia projection screen 6 and directly blocking the direct light from the top light, preventing the multimedia projection screen 6 from being directly illuminated by the light, greatly improving the light-blocking effect. In conjunction with the side light-blocking assembly 3, a dome-shaped light-blocking structure can be formed, greatly improving the light-blocking effect. Moreover, the retractable structure does not occupy the space in front of the viewer, improving the overall aesthetics and usability. Specifically, when the side light-blocking assembly 3 is pulled out and further pulled, most of the light passing through the top light-blocking assembly 4 can be blocked. The top light-blocking assembly 4 moves to the outside of the storage cover 1 through the notch 15. When the top light-blocking assembly 4 moves inside the storage cover 1, the limiting pressure plate 16 limits the position of the top support plate 42. The second torsion spring 423 is always in a compressed state. After the top support plate 42 passes through the notch 15, the top support plate 42 loses the squeezing force. Under the action of the rebound force of the second torsion spring 423, the top support plate 42 rotates and becomes perpendicular to the multimedia projection screen 6. The top light-blocking cloth 43 on the top support plate 42 moves synchronously. The top support plate 42 and the top light-blocking cloth 43 can block the top of the multimedia projection screen 6, which can directly block the direct light from the top light and prevent the multimedia projection screen 6 from being directly illuminated by the light, greatly improving the effect.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A multimedia English teaching device, characterized in that: The system includes a storage cover (1) and a multimedia projection screen (6) below it. The storage cover (1) is made of a metal shell and consists of a horizontal straight section (11), an arc section (12), and a vertical straight section (13). The arc section (12) is located between the horizontal straight section (11) and the vertical straight section (13) and is fixedly connected to them. The storage cover (1) has storage cavities (14) inside the horizontal straight section (11), the arc section (12), and the vertical straight section (13). The bottom of the vertical straight section (13) in the cover (1) is provided with a notch (15). Two side cover plates (2) are symmetrically fixed to the outer wall of the storage cover (1) by bolts. Mounting blocks (21) are provided on the outer wall of the two side cover plates (2) near the top. A guide groove (22) is provided on the outer wall of the side cover plate (2) facing the storage cover (1). The opening path of the guide groove (22) matches the horizontal straight section (11), the arc section (12) and the vertical straight section (13). The storage cover (1) is equipped with a side light blocking component (3) and a top light blocking component (4).

2. The multimedia English teaching device according to claim 1, characterized in that: The side light-blocking assembly (3) includes several movable platforms (31) that are hinged together at equal intervals. A support (32) is provided at the center of one side outer wall of each movable platform (31). A movable cavity (321) is opened at the top of the support (32), and an arc segment (322) is provided at the outer side of the top of the support (32) near the movable cavity (321). A side support plate (33) is movably connected inside the movable cavity (321). A traction head (34) is provided on the side end of the side support plate (33) away from the movable platform (31). A through hole is opened on the outer wall of the traction head (34) adjacent to the side support plate (33). Two grooves are symmetrically opened on the outer wall of the side support plate (33). (331) A rotating shaft (332) is provided at the center of the inner wall of the groove (331). The rotating shaft (332) is rotatably connected to the support (32). A torsion spring (333) is provided between the groove (331) and the movable cavity (321). A guide block (37) is provided at the center of the outer wall of the other side of the moving platform (31). The guide block (37) is located inside the guide groove (22) and slides with the guide groove (22). A connecting cloth (36) is provided between two adjacent moving platforms (31), and two adjacent moving platforms (31) are hinged by a hinge (38). A side shading cloth (35) is provided between two adjacent supports (32).

3. The multimedia English teaching device according to claim 2, characterized in that: The top light blocking assembly (4) includes a horizontal platform (41) located on one side of one of the mounting blocks (21). The top of the horizontal platform (41) has several equally spaced embedding slots (411), and the bottom of the horizontal platform (41) and the bottom near one side wall are provided with anti-fall-off plates (412). A top support plate (42) is movably connected inside the embedding slots (411). The top support plate (42) is located above the side support plate (33), and two symmetrical grooves (421) are opened on the outer side wall of the top support plate (42). A [missing information - likely a device or material] is provided at the center of one side inner wall of each groove (421). Rotating shaft 2 (422), and a torsion spring 2 (423) is provided between groove 2 (421) and embedded groove (411). A top light-shielding cloth (43) is provided between two adjacent top support plates (42). A spring (44) is provided between the horizontal platform (41) and the inner wall of one side of the storage cover (1). Two guide blocks 2 (45) are symmetrically arranged on the outer wall of the horizontal platform (41). The guide blocks 2 (45) are located inside the guide groove (22) and slide in contact with the guide groove (22). The horizontal platform (41) and one of the mounting blocks (21) are hinged together by hinge 2 (46).

4. The multimedia English teaching device according to claim 1, characterized in that: One of the mounting blocks (21) has a lower horizontal plate (5) on one side of its outer wall, and two hooks (51) are symmetrically arranged at the bottom of the lower horizontal plate (5).

5. The multimedia English teaching device according to claim 1, characterized in that: Limiting pressure plates (16) are provided on the top of the inner sidewalls of the horizontal straight section (11), the arc section (12) and the vertical straight section (13) in the storage cover (1). The limiting pressure plates (16) are located on the top of the top support plate (42) and abut against each other.

6. The multimedia English teaching device according to claim 1, characterized in that: The cross-sections of the guide block 1 (37), guide block 2 (45) and guide groove (22) are all T-shaped, and the guide block 1 (37) and guide block 2 (45) are in contact with the guide groove (22).

7. The multimedia English teaching device according to claim 4, characterized in that: The notch (15) allows the moving platform (31) and the horizontal platform (41) to pass through. The cross-section of the combined horizontal platform (41) and the anti-fall plate (412) and the cross-section of the lower horizontal plate (5) are larger than the cross-section of the notch (15).

8. The multimedia English teaching device according to claim 3, characterized in that: The side shading cloth (35), top shading cloth (43) and connecting cloth (36) are all made of black and elastic shading cloth.

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