A multimedia device

Abstract

The utility model discloses a multimedia equipment, including base, base top side bolt mounting has support frame, and support frame one side outer wall bolt inlays has the projection board, and support frame one side outer wall is installed with the writing board through the hinge, and support frame top one side outer wall has seted up the mounting groove, and the mounting groove inside slide installation has the projection subassembly, and the projection subassembly includes the sliding block, the slide -in board, and the sliding block slide installation is in the mounting groove inside, and the sliding block one side outer wall is installed with the casing through plane pivot, and the casing one end has seted up the slide -in slot, and the slide -in slot inner wall one side is installed with the lead screw through the bearing, the utility model discloses sliding block can slide in the mounting groove, and the angle can be adjusted simultaneously to the casing through plane pivot, and the slide -in board telescopic through the lead screw drive, thereby realized the flexible adjustment of the position and angle of projection module, effectively adapts different projection distance and visual angle demand, has promoted the projection effect and teaching adaptability, has solved the inconvenience that traditional projection subassembly fixed installation has brought.

Description

Technical Field

[0001] This utility model relates to the field of teaching equipment technology, and in particular to a multimedia device. Background Technology

[0002] Teaching and training are an important part of modern education, and multimedia equipment plays a crucial role in this process. By integrating media such as images, sound, and video, it enhances teaching interactivity and information delivery efficiency, thereby improving the learning experience. With the continuous development of educational technology, multimedia equipment needs to be multifunctional, portable, and flexible to adapt to diverse teaching scenarios.

[0003] For example, a multimedia training and teaching device, such as application number CN202222912403.6 and authorized announcement date 20230228, includes a base and a support seat mounted on the base via an automatic folding and lifting mechanism. A display mechanism is hinged to the surface of the support seat. The automatic folding and lifting mechanism includes a first folding rod and a second folding rod hinged together in the middle, each with one end connected to the support seat. The other end of the first folding rod is hinged to the base, and the second folding rod is connected to a drive mechanism and slidably engaged with the base. This application incorporates a foldable lifting mechanism between the base and the support seat to support the display mechanism, allowing for variable volume of the teaching device and facilitating movement after reducing its size. More importantly, the hinged connection between the display mechanism and the support seat allows for adjustment of the angle between them, further improving the foldability of the device and reducing its overall size after folding.

[0004] Traditional multimedia devices mostly use projection equipment and LCD screens, with projection equipment being the most widely used. However, traditional projection components are usually fixed in place and cannot be flexibly adjusted in position and angle, affecting the projection effect and applicability. Therefore, there is an urgent need to design a multimedia device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a multimedia device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A multimedia device includes a base. A support frame is bolted to one side of the top of the base, and a projection plate is bolted into the outer wall of one side of the support frame. A writing board is mounted on the outer wall of one side of the support frame via a hinge. A mounting groove is formed on the outer wall of the top of the support frame, and a projection component is slidably mounted inside the mounting groove. The projection component includes a sliding block and a sliding insert plate. The sliding block is slidably mounted inside the mounting groove. A housing is mounted on the outer wall of one side of the sliding block via a planar rotating shaft, and a sliding slot is formed at one end of the housing. A lead screw is mounted on one side of the inner wall of the sliding slot via a bearing. A groove is formed on the outer wall of one side of the sliding block, and a drive motor is bolted to one side of the inner wall of the groove. The output end of the drive motor is fixedly connected to one end of the lead screw via a coupling. The sliding insert plate is slidably inserted into the sliding slot and threadedly connected to the lead screw. A mounting shell is bolted to one end of the sliding insert plate, and a projection module is bolted to one side of the inner wall of the mounting shell.

[0007] Furthermore, two mounting slots are provided on one side of the outer wall of the sliding plate, and a projection power supply module and a projection control module are respectively bolted into the two mounting slots. The projection control module is electrically connected to the projection power supply module, the projection module and the drive motor through wires.

[0008] Furthermore, a host module is bolted to one side of the top of the base, and a button module is provided on the top of the host module. The host module is electrically connected to the button module, the projection power supply module, and the projection control module through wires.

[0009] Furthermore, storage components are installed on the outer walls of both sides of the support frame via hinges. Each storage component includes an L-shaped door that is snapped into the inside of the support frame and is in contact with the writing board.

[0010] Furthermore, a door handle is bolted to one side of the outer wall of the L-shaped door, and several L-shaped plates are bolted to one side of the outer wall of the L-shaped door.

[0011] Furthermore, the outer wall of one side of the base has four opening slots, and the inner wall of the opening slots has a placement slot.

[0012] Furthermore, an electric push rod is bolted to one side of the inner wall of the placement slot, and a universal wheel located inside the opening slot is bolted to the output end of the electric push rod.

[0013] Furthermore, a battery module is bolted inside the base, and the battery module is electrically connected to the main unit module and the electric push rod via wires.

[0014] In the above technical solution, the multimedia device provided by this utility model has the following beneficial effects: This utility model's sliding block can slide within the mounting groove, while the housing can be adjusted in angle via a planar rotating shaft, and the sliding plate can be extended and retracted via a screw drive. This enables flexible adjustment of the projection module's position and angle, effectively adapting to different projection distances and viewing angles, improving projection effects and teaching adaptability, and solving the inconvenience caused by the fixed installation of traditional projection components.

[0015] This utility model features storage components mounted on both sides of the support frame via hinges, including an L-shaped door and an L-shaped board, providing convenient storage space for placing teaching tools such as whiteboard markers, remote controls, or documents. The L-shaped door contacts the writing board, ensuring the storage space is enclosed and tidy, facilitating teachers' access to items at any time, and improving the practicality and organization of the equipment.

[0016] This invention features omnidirectional wheels and an electric push rod on the base, powered by a battery module. This allows for easy movement and fixation of the equipment, and the electric push rod controls the raising and lowering of the omnidirectional wheels, facilitating easy movement or stable placement when needed. It adapts to changes in different teaching environments, such as movement between classrooms or temporary setups, thus improving the portability and flexibility of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a multimedia device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the base, support frame, host module, and button module provided in an embodiment of a multimedia device according to this utility model.

[0019] Figure 3 This is a schematic diagram of the base, support frame, sliding slot, and projection component structure provided in an embodiment of a multimedia device according to this utility model.

[0020] Figure 4 This is a top view of the base, support frame, and L-shaped door structure provided in an embodiment of a multimedia device according to this utility model.

[0021] Figure 5 This is a schematic diagram of the storage component structure provided in an embodiment of a multimedia device according to the present invention.

[0022] Figure 6 This is a side view diagram of the L-shaped door and L-shaped plate provided in an embodiment of a multimedia device according to this utility model.

[0023] Figure 7 This is a schematic diagram of the projection component structure provided in an embodiment of a multimedia device according to the present invention.

[0024] Figure 8 This is a schematic diagram of the projection component structure from below, provided in an embodiment of a multimedia device according to this utility model.

[0025] Explanation of reference numerals in the attached figures: 1. Base; 2. Main unit module; 3. Button module; 4. Opening slot; 5. Universal wheels; 6. Support frame; 7. Storage component; 8. Projection component; 9. Projection panel; 10. Writing board; 11. Mounting slot; 12. Placement slot; 13. Electric push rod; 14. L-shaped door body; 15. Door handle; 16. L-shaped plate; 17. Sliding block; 18. Housing; 19. Groove; 20. Drive motor; 21. Sliding slot; 22. Lead screw; 23. Sliding plate; 24. Mounting shell; 25. Projection module; 26. Placement slot; 27. Projection power supply module; 28. Projection control module; 29. ​​Battery module. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-8 As shown in the figure, a multimedia device provided by this utility model includes a base 1. A support frame 6 is bolted to one side of the top of the base 1, and a projection plate 9 is bolted into the outer wall of one side of the support frame 6. A writing board 10 is mounted on the outer wall of one side of the support frame 6 via a hinge. A mounting groove 11 is formed on the outer wall of the top of the support frame 6, and a projection component 8 is slidably mounted inside the mounting groove 11. The projection component 8 includes a sliding block 17 and a sliding insert plate 23. The sliding block 17 is slidably mounted inside the mounting groove 11, and a housing is mounted on the outer wall of one side of the sliding block 17 via a planar pivot. 18, and a sliding slot 21 is provided at one end of the housing 18, and a lead screw 22 is installed on one side of the inner wall of the sliding slot 21 via a bearing. A groove 19 is provided on one side of the outer wall of the sliding block 17, and a drive motor 20 is bolted to one side of the inner wall of the groove 19. The output end of the drive motor 20 is fixedly connected to one end of the lead screw 22 via a coupling. The sliding plate 23 is slidably inserted into the sliding slot 21. The sliding plate 23 is threadedly connected to the lead screw 22. A mounting shell 24 is bolted to one end of the sliding plate 23, and a projection module 25 is bolted to one side of the inner wall of the mounting shell 24.

[0028] Specifically, in this embodiment, a base 1 is included. A support frame 6 is bolted to one side of the top of the base 1, and a projection panel 9 is bolted into the outer wall of one side of the support frame 6. The projection panel 9 is preferably a magnetic whiteboard, and any brand is acceptable. A writing board 10 is mounted on the outer wall of one side of the support frame 6 via a hinge. A mounting groove 11 is provided on the outer wall of the top of the support frame 6, and a projection component 8 is slidably mounted inside the mounting groove 11. The projection component 8 includes a sliding block 17 and a sliding insert plate 23. Pushing the sliding block 17 to move horizontally along the mounting groove 11 can adjust the lateral position of the projection module 25 to adapt to the needs of the projection panel 9 or different screens. The sliding block 17 is slidably mounted inside the mounting groove 11. A housing 18 is mounted on the outer wall of one side of the sliding block 17 via a planar pivot. Since the housing 18 is mounted on the sliding block 17 via a planar pivot, the user can manually rotate the housing 18 to adjust the pitch angle of the projection module 25, thereby optimizing the shape and clarity of the projected image. A sliding slot 21 is provided at one end of the housing 18, and one side of the inner wall of the sliding slot 21 is open to the sliding slot. A lead screw 22 is mounted on a bearing. A groove 19 is formed on one side of the outer wall of the sliding block 17, and a drive motor 20 is bolted to one side of the inner wall of the groove 19. The drive motor 20 is preferably a JGA25-370 series geared motor. When fine adjustment of the projection distance is required, the drive motor 20 starts, driving the lead screw 22 to rotate. Since the sliding plate 23 is threadedly connected to the lead screw 22, the rotation of the lead screw 22 is converted into the linear motion of the sliding plate 23, causing the sliding plate 23 to extend and retract within the sliding slot 21. The projection module 25 is telescopic and can move back and forth to change the projection distance. The output end of the drive motor 20 is fixedly connected to one end of the lead screw 22 through a coupling. The sliding plate 23 is slidably inserted into the sliding slot 21. The sliding plate 23 is threadedly connected to the lead screw 22. One end of the sliding plate 23 is bolted to the mounting shell 24, and the projection module 25 is bolted to one side of the inner wall of the mounting shell 24. The projection module 25 is started to project the image onto the projection plate 9. The projection module 25 is preferably a domestic LCoS optical engine.

[0029] The present invention provides a multimedia device in which the sliding block 17 can slide within the mounting groove 11, while the housing 18 can be adjusted in angle via a planar rotating shaft, and the sliding plate 23 can be extended and retracted via a lead screw 22. This enables flexible adjustment of the position and angle of the projection module 25, effectively adapting to different projection distances and viewing angles, improving projection effect and teaching adaptability, and solving the inconvenience caused by the fixed installation of traditional projection components.

[0030] In one embodiment provided by this utility model, such as Figure 8As shown, two mounting slots 26 are formed on one side of the outer wall of the sliding plate 23, and a projection power supply module 27 and a projection control module 28 are respectively bolted into the two mounting slots 26. The projection power supply module 27 is preferably an LM2596 step-down module, and the projection control module 28 is preferably a TM32 series microcontroller. The projection power supply module 27 provides power to the projection module 25 and the drive motor 20. The projection control module 28 is electrically connected to the drive motor 20 and the projection module 25 through wires, receives signals from the host module 2 or the button module 3, controls the start and stop of the drive motor 20 and the switch of the projection module 25, and adjusts the rotation direction and speed of the drive motor 20 according to the instructions to realize the precise extension and retraction of the sliding plate 23. At the same time, the projection control module 28 manages the projection mode of the projection module 25, such as brightness and resolution, to ensure that the projected content and the writing content of the writing board 10 are displayed in sync. The projection control module 28 is electrically connected to the projection power supply module 27, the projection module 25 and the drive motor 20 through wires respectively.

[0031] In another embodiment provided by this utility model, such as Figure 1-4 As shown, a host module 2 is bolted to one side of the top of the base 1. The host module 2 is the computing and control core of the device, and may be an embedded motherboard or single-board computer integrating a processor, memory, and storage. It is responsible for processing input signals from the button module and controlling the projection control module, electric actuators, and other actuators; the preferred model is a Raspberry Pi 4 Model B. The top of the host module 2 is equipped with a button module 3, which is a set of physical buttons or touch buttons used to realize functions such as power on / off, mode switching, and content selection. A customized membrane button or mechanical button panel is used, which is connected to the GPIO general-purpose input / output pins of the host module. Commands such as turning on the projection or adjusting the position are input through the button module 3. The host module 2 processes these commands and sends signals to the projection control module 28, thereby controlling the operation of the projection component 8. The host module 2 is electrically connected to the button module 3, the projection power supply module 27, and the projection control module 28 through wires.

[0032] In another embodiment provided by this utility model, such as Figure 1 and Figure 4-6As shown, storage components 7 are installed on both sides of the outer wall of the support frame 6 via hinges. The storage components 7 include an L-shaped door 14. When closed, the L-shaped door 14 contacts the writing board 10 to form a sealed space to prevent dust from entering. The L-shaped door 14 is snapped into the inside of the support frame 6 and contacts the writing board 10. A door handle 15 is bolted to one side of the outer wall of the L-shaped door 14 to facilitate the user to open the L-shaped door 14. Several L-shaped plates 16 are bolted to one side of the outer wall of the L-shaped door 14 and are bolted to the L-shaped door 14 to divide the storage space for placing small items such as whiteboard markers and remote controls.

[0033] In another embodiment provided by this utility model, such as Figure 1-4 As shown, four openings 4 are formed on the outer wall of one side of the base 1, and a mounting slot 12 is formed on one side of the inner wall of the opening slot 4. An electric push rod 13 is bolted to one side of the inner wall of the mounting slot 12. The electric push rod 13 is preferably THK, and a universal wheel 5 located inside the opening slot 4 is bolted to the output end of the electric push rod 13. When the device needs to be moved, the user sends a signal through the host module 2 or an external switch, the electric push rod 13 is activated, its output end extends, and pushes the universal wheel 5 out of the opening slot 4 to contact the ground. At this time, the device can be easily pushed. When it is necessary to fix it, the electric push rod 13 retracts and pulls the universal wheel 5 back into the mounting slot 12, and the base 1 directly contacts the ground, increasing stability. A battery module 29 is bolted inside the base 1. The battery module 29 is built into the base 1 and supplies power to the host module 2 and the electric push rod 13 through wires, ensuring that the movement function can be operated without an external power source. The battery module 29 is electrically connected to the host module 2 and the electric push rod 13 through wires.

[0034] Working Principle: When movement is required, the user operates the main unit module 2 via button module 3. The main unit module 2 sends a signal to the electric push rod 13, which extends and lowers the omnidirectional wheels 5 to contact the ground, allowing the device to be moved easily. This process first pushes the device, using the omnidirectional wheels 5 at the bottom of the base 1 to move it to the desired position in the teaching area. Once in the appropriate position, the user operates the main unit module 2 via button module 3 to retract the electric push rod 13, raising the omnidirectional wheels 5 and retracting them into the opening slot 4, so that the bottom of the base 1 directly contacts the ground, ensuring stable placement of the device. This process also allows for horizontal adjustment of the base 1 by controlling the extension length of the electric push rod 13. During subsequent teaching, the user can grasp the door handle 15 and pull open the L-shaped door 14 of the storage component 7. After opening, the user can take out and put in teaching aids, such as whiteboard markers, remote controls, or documents, from the L-shaped panel 16. Subsequently, the writing board 10 on one side of the support frame 6 can be opened via the hinge to unfold it into the usage position. The writing tablet 10 can be used for traditional writing, and when combined with the projection tablet 9, it supports switching between multimedia and traditional teaching modes. The unfolding of the writing board 10 does not affect the projection function, and users can directly project and display their writing. For projection, users can slide the sliding block 17 of the projection component 8 inside the mounting slot 11 to adjust the lateral position of the projection module 25. Then, by sending a command through the button module 3, the projection control module 28 starts the drive motor 20. The drive motor 20 drives the lead screw 22 to rotate through the coupling, causing the sliding plate 23 to move in and out of the sliding slot 21, thereby driving the mounting shell 24 and the projection module 25 to adjust back and forth to change the projection distance. Since the shell 18 is mounted on the sliding block 17 through a planar pivot, users can manually adjust the angle of the shell 18 to further optimize the projection direction. The projection module 25 projects the image onto the projection plate 9 for multimedia teaching. The projection plate 9 is bolted into the outer wall of one side of the support frame 6 to ensure a clear and stable projection image. During projection, users start the host module 2 through the button module 3. The host module 2 supplies power to the projection power supply module 27 and the projection control module 28 through wires. The projection control module 28 controls the projection module 25 to start working, and the user can adjust the projection component 8 to optimize the projection effect.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multimedia device, comprising a base (1), characterized in that, A support frame (6) is bolted to one side of the top of the base (1), and a projection plate (9) is bolted into the outer wall of one side of the support frame (6). A writing board (10) is mounted on the outer wall of one side of the support frame (6) via a hinge. An installation groove (11) is provided on the outer wall of the top of the support frame (6), and a projection assembly (8) is slidably installed inside the installation groove (11). The projection assembly (8) includes a sliding block (17) and a sliding insert plate (23). The sliding block (17) is slidably installed inside the installation groove (11). A housing (18) is mounted on the outer wall of one side of the sliding block (17) via a planar rotating shaft, and one end of the housing (18) is opened. There is a sliding slot (21), and a lead screw (22) is installed on one side of the inner wall of the sliding slot (21) via a bearing. A groove (19) is provided on one side of the outer wall of the sliding block (17), and a drive motor (20) is fixed on one side of the inner wall of the groove (19). The output end of the drive motor (20) is fixedly connected to one end of the lead screw (22) via a coupling. The sliding plate (23) is slidably inserted into the sliding slot (21). The sliding plate (23) is threadedly connected to the lead screw (22). A mounting shell (24) is bolted to one end of the sliding plate (23), and a projection module (25) is bolted to one side of the inner wall of the mounting shell (24).

2. A multimedia device according to claim 1, characterized in that, Two mounting slots (26) are provided on one side of the outer wall of the sliding plate (23), and a projection power supply module (27) and a projection control module (28) are respectively bolted into the two mounting slots (26). The projection control module (28) is electrically connected to the projection power supply module (27), the projection module (25) and the drive motor (20) through wires.

3. A multimedia device according to claim 2, characterized in that, The base (1) has a main unit module (2) bolted on one side of its top, and the main unit module (2) has a button module (3) on its top. The main unit module (2) is electrically connected to the button module (3), the projection power supply module (27), and the projection control module (28) respectively via wires.

4. A multimedia device according to claim 1, characterized in that, Storage components (7) are installed on both sides of the outer wall of the support frame (6) via hinges. The storage components (7) include an L-shaped door (14), which is snapped into the inside of the support frame (6) and is in contact with the writing board (10).

5. A multimedia device according to claim 4, characterized in that, A door handle (15) is bolted to one side of the outer wall of the L-shaped door (14), and several L-shaped plates (16) are bolted to one side of the outer wall of the L-shaped door (14).

6. A multimedia device according to claim 2, characterized in that, The base (1) has four opening slots (4) on one side of its outer wall, and a placement slot (12) is provided on one side of the inner wall of the opening slots (4).

7. A multimedia device according to claim 6, characterized in that, An electric push rod (13) is bolted to one side of the inner wall of the placement slot (12), and a universal wheel (5) located inside the opening slot (4) is bolted to the output end of the electric push rod (13).

8. A multimedia device according to claim 7, characterized in that, The base (1) is bolted to house a battery module (29), and the battery module (29) is electrically connected to the main unit module (2) and the electric push rod (13) via wires.

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