Multimedia display device

Abstract

The utility model belongs to the technical field of multimedia, and discloses a multimedia display device which comprises a projector, a mounting plate is arranged over the projector, a protective cover is fixedly mounted at the bottom of the mounting plate, a sleeve is rotationally connected to a central inner cavity of the bottom end of the protective cover in a penetrating and sleeving mode, and a threaded rod is connected to the inner wall of the lower end of the sleeve in an extending and threaded mode. The bottom of the threaded rod is fixedly connected with a connecting plate; according to the invention, the mounting plate, the sleeve, the threaded rod, the connecting plate, the auxiliary assembly, the fixing column, the T-shaped groove, the T-shaped shaft, the first gear, the second gear, the motor and the limiting telescopic joint are arranged above the projector, so that the projector for multimedia display can be stably hoisted and borne, and the use height of the projector can be automatically adjusted; and the problems that in the prior art, a manual adjusting mode is adopted, adjusting operation is troublesome, labor is wasted, and precision is poor are solved.

Description

Technical Field

[0001] This application relates to the field of multimedia technology, and more specifically, to a multimedia display device. Background Technology

[0002] A multimedia display device is a device that uses multimedia technology to display information in the form of images, sound, and video. The advantage of a multimedia display device is that it can display information in a vivid and intuitive way, attract the audience's attention, and improve the effect of information transmission. It can combine various media elements, such as images, text, sound, and video, to make the information more comprehensive and diverse.

[0003] A search of authorized patent publication number CN220540786U reveals a multimedia display device for event venues, including a projector and an adjustment mechanism. A rotating mechanism is provided on one side of the projector's surface, a connecting block is fixedly connected to one end of the rotating mechanism, and an adjustment mechanism is provided at the other end of the connecting block. This application addresses the problem that most existing multimedia display devices for event venues cannot adjust their height during use, thus preventing operation according to the specific conditions of the event venue and affecting the display effect, thereby reducing the practicality and applicability of the multimedia display device.

[0004] However, the height adjustment of the projector in this application requires manual operation, which makes the adjustment process cumbersome and laborious, and also results in poor height adjustment accuracy.

[0005] To address the aforementioned problems, this application provides a multimedia display device. Utility Model Content

[0006] The multimedia display device provided in this application adopts the following technical solution:

[0007] A multimedia display device includes a projector. A mounting plate is positioned directly above the projector. A protective cover is fixedly mounted on the bottom of the mounting plate. A sleeve is rotatably fitted through the central cavity of the bottom end of the protective cover. A threaded rod is screwed onto the inner wall of the lower end of the sleeve. A connecting plate is fixedly connected to the bottom of the threaded rod. An auxiliary component is positioned between the connecting plate and the top of the projector. A fixing post is positioned directly above the sleeve, located inside the protective cover and fixedly connected to the center of the bottom of the mounting plate. A T-shaped groove is formed at the center of the bottom end of the fixing post. A T-shaped shaft is rotatably fitted onto the inner wall of the T-slot. The bottom of the T-shaped shaft extends out of the interior of the T-slot, and the bottom of the T-shaped shaft is fixedly connected to the center of the top of the sleeve. A first gear is fixedly fitted onto the outer wall of the upper end of the sleeve. A second gear meshes with one side of the first gear. A motor is connected to the center of the top of the second gear via a rotating shaft. The motor is fixedly installed on the bottom plane of the mounting plate, and the motor, the second gear, and the first gear are all located inside the protective cover. A limiting expansion joint is provided on one side of the sleeve, and the limiting expansion joint is located between the mounting plate and the connecting plate.

[0008] Through the above technical solution, the T-slot and T-shaft enable the fixed column to rotate and lift the sleeve.

[0009] Furthermore, the limiting expansion joint includes a set of cylindrical and cylindrical rods that are slidably sleeved together, and the limiting expansion joint is movably sleeved through the outer wall of the cylindrical part to one side of the bottom of the protective cover. The end of the cylindrical part away from the cylindrical rod is fixedly connected to the bottom of the mounting plate, while the end of the cylindrical rod away from the cylindrical part is fixedly connected to one side of the top of the connecting plate.

[0010] Through the above technical solution, the limiting expansion joint achieves the limiting function when the sleeve and the threaded rod are screwed together.

[0011] Furthermore, the mounting plate has a square-shaped structure, and mounting holes are provided through the inner cavities at the four corners of the mounting plate.

[0012] Through the above technical solution, the mounting plate and mounting holes can achieve the overall hoisting and fixed assembly function.

[0013] Furthermore, the protective cover is a rectangular hollow box structure, with rectangular grooves extending through both the front and rear ends of the protective cover, and multiple louvers are vertically and uniformly fixedly installed on the inner wall of each rectangular groove at intervals.

[0014] Through the above technical solutions, the anti-slip cover can achieve the protection of its inner structure.

[0015] Furthermore, the auxiliary component includes an extension plate fixedly connected to the middle position of both sides of the bottom of the connecting plate. A shaft is fixedly installed at the connection point of the lower ends of the two extension plates. A connecting seat is rotatably sleeved on the outer wall of the shaft, and the bottom of the connecting seat is fixedly connected to the outer surface of the top of the projector.

[0016] Furthermore, the auxiliary component also includes an embedded groove in the middle of the connecting seat, and a third gear is fixedly installed on the outer wall of the middle of the connecting seat through the groove. The upper end of the third gear meshes with a rack, one end of the rack is fixedly connected to an L-shaped arm, and the end of the L-shaped arm away from the rack is fixedly connected to a cylinder. The non-driving end of the cylinder is fixedly installed in the central cavity of the connecting plate.

[0017] Furthermore, a slide rail is fixedly connected to the middle position of the top of the rack, and a slide rail groove is slidably sleeved on the outer wall of the upper end of the slide rail, and the slide rail groove is opened at the bottom end of the middle position of the connecting plate.

[0018] Through the above technical solution, the auxiliary components can support the projector and adjust its angle.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] This application utilizes a mounting plate, sleeve, threaded rod, connecting plate, auxiliary components, fixed column, T-slot, T-shaft, first gear, second gear, motor, and limit expansion joint installed above the projector. This allows for stable hoisting and support of the projector used for multimedia displays, while also enabling automatic adjustment of its height. This overcomes the problems of cumbersome, laborious, and inaccurate adjustment methods found in existing manual methods. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a partial cross-sectional perspective view of this application;

[0023] Figure 3 This is a schematic diagram of the protective cover structure of this application;

[0024] Figure 4 This is one of the partial structural schematic diagrams of this application;

[0025] Figure 5 This is the second partial structural diagram of this application.

[0026] Explanation of the labels in the diagram:

[0027] 1. Projector; 2. Mounting plate; 3. Protective cover; 301. Louvered slats; 4. Sleeve; 5. Threaded rod; 6. Connecting plate; 7. Fixing column; 8. T-slot; 9. T-shaft; 10. First gear; 11. Second gear; 12. Motor; 13. Limiting expansion joint; 14. Extension plate; 15. Shaft; 16. Connecting seat; 17. Third gear; 18. Rack; 1801. Slide rail; 19. L-shaped arm; 20. Cylinder. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Example:

[0032] This application discloses a multimedia display device; please refer to... Figure 1 , Figure 2 and Figure 3The system includes a projector 1, a mounting plate 2 directly above the projector 1, a protective cover 3 fixedly mounted on the bottom of the mounting plate 2, a sleeve 4 rotatably sleeved through the central cavity of the bottom end of the protective cover 3, a threaded rod 5 screwed onto the inner wall of the lower end of the sleeve 4, a connecting plate 6 fixedly connected to the bottom of the threaded rod 5, and an auxiliary component positioned between the connecting plate 6 and the top of the projector 1. A fixing post 7 is located directly above the sleeve 4, inside the protective cover 3, and fixedly connected to the center of the bottom of the mounting plate 2. A T-shaped groove 8 is formed at the center of the bottom end of the fixing post 7, and a T-shaped groove 8 is rotatably sleeved on the inner wall of the T-shaped groove 8. The bottom of the T-shaped shaft 9 extends into the interior of the T-shaped groove 8, and the bottom of the T-shaped shaft 9 is fixedly connected to the center of the top of the sleeve 4. The outer wall of the upper end of the sleeve 4 is fixedly fitted with a first gear 10, and a second gear 11 meshes with one side of the first gear 10. The center of the top of the second gear 11 is connected to a motor 12 through a rotating shaft. The motor 12 is fixedly installed on the bottom plane of the mounting plate 2, and the motor 12, the second gear 11, and the first gear 10 are all located inside the protective cover 3. A limiting expansion joint 13 is provided on one side of the sleeve 4, and the limiting expansion joint 13 is located between the mounting plate 2 and the connecting plate 6.

[0033] The limiting expansion joint 13 includes a set of cylindrical and cylindrical rods that are slidably sleeved together. The limiting expansion joint 13 is movably sleeved through the outer wall of the cylindrical part to one side of the bottom of the protective cover 3. The end of the cylindrical part away from the cylindrical rod is fixedly connected to the bottom of the mounting plate 2, and the end of the cylindrical rod away from the cylindrical part is fixedly connected to one side of the top of the connecting plate 6. The mounting plate 2 is a square plate structure, and the inner cavity at the four corners of the mounting plate 2 is provided with through mounting holes. The protective cover 3 is a rectangular hollow box structure. The front and rear ends of the protective cover 3 are provided with through rectangular grooves. The inner wall of each rectangular groove is vertically and evenly fixedly installed with multiple louvers 301 at intervals. The protective cover 3 can protect the inner structure from damage and also avoid the problem of dust accumulation on the surface of the inner structure. The rectangular grooves and multiple louvers 301 on both sides of the protective cover 3 are conducive to achieving ventilation and heat dissipation on the inner side.

[0034] Please see Figure 1 , Figure 4 and Figure 5 The auxiliary components include extension plates 14 fixedly connected to the middle positions of the two sides of the bottom of the connecting plate 6. A shaft 15 is fixedly installed at the connection of the lower ends of the two extension plates 14. A connecting seat 16 is rotatably sleeved on the outer wall of the shaft 15, and the bottom of the connecting seat 16 is fixedly connected to the outer surface of the top of the projector 1.

[0035] The auxiliary components also include an embedded groove in the middle of the connecting seat 16, and a third gear 17 is fixedly mounted on the outer wall of the middle of the connecting seat 16 through the groove. The upper end of the third gear 17 meshes with a rack 18. One end of the rack 18 is fixedly connected to an L-shaped arm 19. The end of the L-shaped arm 19 away from the rack 18 is fixedly connected to a cylinder 20. The non-driving end of the cylinder 20 is fixedly mounted in the center cavity of the connecting plate 6. A slide rail 1801 is fixedly connected to the middle of the top of the rack 18. A slide rail groove is slidably fitted on the outer wall of the upper end of the slide rail 1801. The slide rail groove is opened at the bottom of the middle of the connecting plate 6. The cooperative design of the slide rail 1801 and the slide rail groove on the top of the rack 18 can improve the stability of the rack 18 in the passive displacement state.

[0036] The implementation principle of this embodiment is as follows: When in use, the entire assembly can be fixed at the required position on the indoor wall and ceiling through each mounting hole on the mounting plate 2. During use, the projector 1 used for multimedia display can indirectly achieve the passive rotation of the sleeve 4 by the driving action of the motor 12 on the second gear 11, the meshing state of the second gear 11 and the first gear 10, and the hoisting and limiting rotation state of the T-shaped groove 8 and T-shaped shaft 9 between the sleeve 4 and the fixed column 7. At this time, due to the screw connection between the sleeve 4 and the threaded rod 5, and the vertical movement limiting action of the cylinder and the rod in the limiting expansion joint 13 on the screw connection state, the vertical movement of the connecting plate 6 can be indirectly achieved, and the automatic adjustment of the height position of the projector 1 can be realized.

[0037] Furthermore, the horizontal drive of the L-shaped arm 19 by the cylinder 20 synchronously drives the rack 18 to move horizontally at the bottom of the connecting plate 6. At this time, due to the meshing state of the rack 18 and the third gear 17 on the outer wall of the middle of the connecting seat 16, and the rotational bearing state of the extension plate 14 and the shaft 15 on the connecting seat 16, the position of the connecting seat 16 can be swung, thereby indirectly realizing the automatic adjustment of the angle position of the projector 1. During this process, the slide rail 1801 and the slide rail groove perform sliding limit cooperation. After the projector 1 is used, the cylinder 20 needs to be returned to the initial reset state, so that the projector 1 can be kept horizontally.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multimedia presentation device comprising a projector (1), characterized in that: The projector (1) is provided above the mounting plate (2), the bottom of the mounting plate (2) is fixedly provided with a protective cover (3), the bottom end of the protective cover (3) is rotatably sleeved with a sleeve (4), the inner wall of the lower end of the sleeve (4) is extendedly screwed with a threaded rod (5), the bottom of the threaded rod (5) is fixedly connected with a connecting plate (6), and the connecting plate (6) is provided between the top of the projector (1) and the position of the auxiliary assembly. The sleeve (4) is provided above the fixed column (7), the fixed column (7) is located on the inner side of the protective cover (3), and the fixed column (7) is fixedly connected to the center position of the bottom of the mounting plate (2). The center of the bottom end of the fixed column (7) is provided with a T-shaped slot (8), the inner wall of the T-shaped slot (8) is rotatably sleeved with a T-shaped shaft (9), the bottom of the T-shaped shaft (9) extends out of the inside of the T-shaped slot (8), and the bottom of the T-shaped shaft (9) is fixedly connected with the center position of the top of the sleeve (4). The outer wall of the upper end of the sleeve (4) is fixedly sleeved with a first gear (10), one side of the first gear (10) is engaged with a second gear (11), the top of the second gear (11) is rotatably connected with a motor (12), and the motor (12) is fixedly installed on the bottom plane of the mounting plate (2). The motor (12), the second gear (11) and the first gear (10) are located on the inner side of the protective cover (3), and the side edge of the sleeve (4) is provided with a limiting telescopic joint (13). The limiting telescopic joint (13) is located between the mounting plate (2) and the connecting plate (6).

2. A multimedia presentation device according to claim 1, characterized in that: The limiting telescopic joint (13) includes a group of cylindrical and circular rods which are slidably sleeved, and the limiting telescopic joint (13) is movably sleeved through the outer wall of the cylindrical part and the side of the bottom end of the protective cover (3). The end of the cylindrical part away from the circular rod is fixedly connected with the bottom of the mounting plate (2), and the end of the circular rod away from the cylindrical part is fixedly connected with one side of the top of the connecting plate (6).

3. The multimedia presentation device of claim 1, wherein: The mounting plate (2) is a square plate structure, and the inner cavities at the four corners of the mounting plate (2) are all through-holes.

4. The multimedia presentation device of claim 1, wherein: The protective cover (3) is a rectangular hollow box structure, and the front and rear sides of the protective cover (3) are both provided with rectangular grooves, and the inner walls of each side of the rectangular grooves are all fixedly installed with a plurality of louver strips (301) which are vertically and uniformly arranged.

5. The multimedia presentation device of claim 1, wherein: The auxiliary assembly includes an extension plate (14) fixedly connected to the bottom of the connecting plate (6) and located between the two sides, and an axle (15) fixedly installed at the connection between the lower ends of the two extension plates (14). The outer wall of the axle (15) is rotatably sleeved with a connecting seat (16), and the bottom of the connecting seat (16) is fixedly connected with the outer surface of the top of the projector (1).

6. A multimedia presentation device according to claim 5, wherein: The auxiliary assembly further comprises a recess embedded in the middle of the connecting seat (16), and the outer wall of the middle of the connecting seat (16) is fixedly sleeved with the third gear (17) through the recess, the upper end of the third gear (17) is engaged with a rack (18), one end of the rack (18) is fixedly connected with an L-shaped arm (19), the end of the L-shaped arm (19) away from the rack (18) is fixedly connected with an air cylinder (20), and the non-driving end of the air cylinder (20) is fixedly sleeved and installed in the central inner cavity of the connecting plate (6) in a penetrating mode.

7. A multimedia presentation device according to claim 6, wherein: The middle of the top of the rack (18) is fixedly connected with a sliding rail strip (1801), the outer wall of the upper end of the sliding rail strip (1801) is slidably sleeved with a sliding rail groove, and the sliding rail groove is arranged at the bottom of the middle of the connecting plate (6).

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