CN212647703U

CN212647703U - Teaching multimedia projection device

Info

Publication number: CN212647703U
Application number: CN202021633176.8U
Authority: CN
Inventors: 李佳
Original assignee: Beijing Tianhua Yuxin Science And Trade Co ltd
Current assignee: Beijing Tianhua Yuxin Science And Trade Co ltd
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2021-03-02
Anticipated expiration: 2030-08-08

Abstract

The utility model discloses a teaching multimedia projection arrangement, which comprises a mounting bracket, the lower extreme of mounting bracket has an installing plate through hinge swing joint, installing plate's up end fixedly connected with multimedia box, the terminal surface of multimedia box and the one end fixedly connected with projecting lens who keeps away from the mounting bracket, the side of multimedia box is provided with side heat dissipation grid, the right-hand fixedly connected with stopper that just is located the ceiling of multimedia box, the lower terminal surface fixedly connected with guide rail of stopper. The utility model discloses, through setting up and reciprocating on the guide rail with the multi-media case through traction lever swing joint's lifter, drive opening and closing of multi-media case, multi-media case protection shield all around can be fine avoid the multi-media equipment when not using to fall into the dust, prolonged multi-media equipment's life to a certain extent.

Description

Teaching multimedia projection device

Technical Field

The utility model relates to a multimedia teaching field especially relates to a teaching multimedia projection arrangement.

Background

With the continuous progress of social science and technology, teaching equipment is continuously innovated, various novel teaching equipment is developed endlessly, which is more and more convenient for teachers to explain teaching contents, so that a classroom is not a monotonous blackboard and chalk any more, and is more diversified and multidimensional, and teaching contents which are difficult to express visually in a traditional teaching mode can be expressed.

At present, a multimedia projection device for teaching mostly adopts the suspension type, hangs for a long time at the classroom ceiling, and the thick dust of one deck has been piled up very easily, has reduced the aesthetic property on the one hand, and on the other hand has reduced the radiating efficiency of projecting apparatus, and most classrooms all install the ceiling fan, often has the flabellum to shelter from the condition appearance of projecting apparatus picture, needs to design a multimedia projection device that can effectively avoid accumulating the dust.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a teaching multimedia projection device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a teaching multimedia projection device comprises a mounting frame, wherein the lower end of the mounting frame is movably connected with a mounting bottom plate through a hinge, the upper end face of the mounting bottom plate is fixedly connected with a multimedia box, the end face of the multimedia box and the end far away from the mounting frame are fixedly connected with a projection lens, the side face of the multimedia box is provided with a side face heat dissipation grid, the right side of the multimedia box and the end on a ceiling are fixedly connected with a limiting block, the lower end face of the limiting block is fixedly connected with a guide rail, the side face of the guide rail is movably connected with a lifting frame, the upper end face of the mounting bottom plate and the positions on the two sides of the multimedia box are fixedly connected with fixing blocks, the fixing blocks are movably connected with traction rods through hinges, one ends of the traction rods, far away from the fixing blocks, are, preceding protection shield just to the side of multimedia box and be located border department fixedly connected with side protection shield, the medial surface of side protection shield just keeps away from the lateral surface fixedly connected with back protection shield that extends to the mounting bracket, mounting plate's bottom surface is provided with the stereo set, mounting plate's bottom surface and the below that is located the stereo set are provided with the regulator, mounting plate's bottom surface just is located the right-hand control panel that is provided with of stereo set, mounting plate's bottom surface and the below that is located control panel are provided with the status display.

As a further description of the above technical solution:

the number of the mounting racks is two, and the mounting racks are symmetrically arranged relative to the multimedia box.

As a further description of the above technical solution:

the number of the guide rails is two, and the guide rails are symmetrically arranged relative to the multimedia box.

As a further description of the above technical solution:

symmetrical grooves are formed in the side face of the guide rail, and racks are arranged on one side, close to the lifting frame, of the groove of the guide rail.

As a further description of the above technical solution:

the side of the lifting frame and the side close to the guide rail are movably connected with a toothed wheel through a bearing, and the outer edge tooth surface of the toothed wheel is meshed with the straight tooth surface of the guide rail rack.

As a further description of the above technical solution:

the number of the lifting frames is two, the lifting frames are symmetrically arranged relative to the multimedia box, and the end face of each lifting frame, which is just opposite to one face of the multimedia box, is movably connected with the installation bottom plate through a traction rod.

As a further description of the above technical solution:

the mounting frame and the limiting block are fixedly connected with a ceiling, and the front protection plate, the side protection plate and the rear protection plate are tightly connected with the ceiling.

The utility model discloses following beneficial effect has:

compared with the prior art, this teaching multimedia projection arrangement reciprocates on the guide rail through setting up the lifter that passes through traction lever swing joint with the multimedia box, drives opening and closing of multimedia box, and multimedia box protection shield all around can be fine avoid multimedia equipment to fall into the dust when not using, has prolonged multimedia equipment's life to a certain extent.

Drawings

Fig. 1 is a schematic view of an overall structure of a multimedia projector for teaching according to the present invention;

fig. 2 is a bottom view of the component mounting base plate of the teaching multimedia projector according to the present invention;

fig. 3 is the utility model provides a teaching multimedia projection device's relation of connection plan view.

Illustration of the drawings:

1. a multimedia box; 2. a side heat dissipation grid; 3. a mounting frame; 4. a hinge; 5. mounting a bottom plate; 6. a fixed block; 7. a projection lens; 8. a guide rail; 9. a toothed wheel; 10. a lifting frame; 11. a limiting block; 12. a draw bar; 13. sounding; 14. a regulator; 15. a status display; 16. a control panel; 17. a front protective plate; 18. a side protection plate; 19. and a rear protective plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the utility model provides a pair of teaching multimedia projection arrangement: comprises a mounting frame 3 for providing supporting force for the mounted equipment, the lower end of the mounting frame 3 is movably connected with a mounting bottom plate 5 through a hinge 4 and is used for fixedly mounting various accessory structures, the upper end surface of the mounting bottom plate 5 is fixedly connected with a multimedia box 1 and a main body for realizing the multimedia function, one end of the end surface of the multimedia box 1 far away from the mounting frame 3 is fixedly connected with a projection lens 7 for realizing the projection of teaching images, the side surface of the multimedia box 1 is provided with a side surface heat dissipation grid 2 for facilitating the heat dissipation of the multimedia equipment, the right side of the multimedia box 1 is fixedly connected with a limiting block 11 positioned on a ceiling and used for limiting the maximum stroke of a lifting frame 10, the lower end surface of the limiting block 11 is fixedly connected with a guide rail 8 and restricting the freedom degree of movement of the lifting frame 10, the side surface of, the upper end surface of the installation bottom plate 5 is fixedly connected with fixed blocks 6 at the positions which are positioned at the two sides of the multimedia box 1, the fixed blocks 6 are movably connected with a traction rod 12 through a hinge and are used for providing upward pulling force for the multimedia box 1 and balancing the self gravity of the multimedia box, one end of the traction rod 12 and the end far away from the fixed blocks 6 are movably connected with the end surface of a lifting frame 10 through a hinge, the outer side of a guide rail 8 far away from the multimedia box 1 is fixedly connected with a front protective plate 17, the front protective plate 17 is just opposite to the side surface of the multimedia box 1 and is fixedly connected with a side protective plate 18 at the edge, the inner side surface of the side protective plate 18 and the outer side surface far away from the installation frame 3 are fixedly connected with a rear protective plate 19, the multimedia box 1 is subjected to omnibearing dustproof protection when not working, the bottom surface, the projector is used for assisting in adjusting the projection focal length of the projector, a control panel 16 is arranged on the bottom surface of the mounting base plate 5 and on the right of the sound box 13 and used for setting working parameters of the multimedia device, and a state display 15 is arranged on the bottom surface of the mounting base plate 5 and below the control panel 16 and used for displaying the working state of the multimedia device.

The number of the mounting frames 3 is two, the mounting frames are symmetrically arranged about the multimedia box 1, the number of the guide rails 8 is two, the guide rails are symmetrically arranged about the multimedia box 1, the stress balance is ensured, symmetrical grooves are formed in the side surfaces of the guide rails 8 and used for providing a movement space for the toothed wheels 9, racks are arranged on one sides, close to the lifting frames 10, of the grooves of the guide rails 8, the side surfaces of the lifting frames 10, close to one side of the guide rails 8, are movably connected with the toothed wheels 9 through bearings and driven to rotate by a motor, the outer edge tooth surfaces of the toothed wheels 9 are meshed with straight tooth surfaces of the racks of the guide rails 8 and used for transmitting sufficient lifting power, the number of the lifting frames 10 is two, the lifting frames are symmetrically mounted about the multimedia box 1, the end surfaces of the lifting frames 10, which face the multimedia box 1, are movably connected with the mounting base plate 5 through the traction, the front protection panel 17, the side protection panel 18 and the rear protection panel 19 are tightly attached to the ceiling to prevent dust from entering the inner space surrounded by the protection panels.

The working principle is as follows: when the device is used, the whole device is fixedly connected to a ceiling through bolts, a power supply is switched on, working parameters of the multimedia box 1 are set through the control panel 16, the crane 10 is controlled to move downwards to drive the traction rod 12 to descend so that the multimedia box 1 is inclined by a certain angle, the focal length of the projection lens 7 is adjusted through the regulator 14 so that an image generated by a projector reaches the clearest state on a display screen, the setting of the multimedia projection device can be completed, when the device is not used, the crane 10 is controlled to move upwards to the upper limit, the installation bottom plate 5 is completely closed relative to the protection plate, and dust falling into the multimedia projection device when the device is not used is effectively avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a teaching multimedia projection arrangement, includes mounting bracket (3), its characterized in that: the lower end of the mounting frame (3) is movably connected with a mounting base plate (5) through a hinge (4), the upper end face of the mounting base plate (5) is fixedly connected with a multimedia box (1), the end face of the multimedia box (1) is fixedly connected with a projection lens (7) far away from the mounting frame (3), the side face of the multimedia box (1) is provided with a side heat dissipation grid (2), a limiting block (11) is fixedly connected to the right side of the multimedia box (1) and positioned on a ceiling, a guide rail (8) is fixedly connected to the lower end face of the limiting block (11), a lifting frame (10) is movably connected to the side face of the guide rail (8), a fixing block (6) is fixedly connected to the upper end face of the mounting base plate (5) and positioned on two sides of the multimedia box (1), and a traction rod (12), one end of the draw bar (12) and the end far away from the fixed block (6) are movably connected with the end surface of the lifting frame (10) through a hinge, the outer side of the guide rail (8) far away from the multimedia box (1) is fixedly connected with a front protective plate (17), the front protective plate (17) is opposite to the side surface of the multimedia box (1) and is fixedly connected with a side protective plate (18) at the edge, the inner side surface of the side protection plate (18) is far away from the outer side surface extending to the mounting rack (3) and is fixedly connected with a rear protection plate (19), a sound box (13) is arranged on the bottom surface of the mounting bottom plate (5), an adjuster (14) is arranged on the bottom surface of the mounting bottom plate (5) and below the sound box (13), a control panel (16) is arranged on the bottom surface of the mounting bottom plate (5) and positioned on the right side of the sound box (13), and a state display (15) is arranged on the bottom surface of the mounting bottom plate (5) and below the control panel (16).

2. An educational multimedia projection apparatus as claimed in claim 1, wherein: the number of the mounting racks (3) is two, and the mounting racks are symmetrically arranged relative to the multimedia box (1).

3. An educational multimedia projection apparatus as claimed in claim 1, wherein: the number of the guide rails (8) is two, and the guide rails are symmetrically arranged relative to the multimedia box (1).

4. An educational multimedia projection apparatus as claimed in claim 1, wherein: symmetrical grooves are formed in the side face of the guide rail (8), and racks are arranged on one side, close to the lifting frame (10), of the groove of the guide rail (8).

5. An educational multimedia projection apparatus as claimed in claim 1, wherein: one side of the side face of the lifting frame (10) close to the guide rail (8) is movably connected with a toothed wheel (9) through a bearing, and the outer edge tooth surface of the toothed wheel (9) is meshed with the straight tooth surface of the rack of the guide rail (8).

6. An educational multimedia projection apparatus as claimed in claim 1, wherein: the number of the lifting frames (10) is two, the lifting frames are symmetrically arranged relative to the multimedia box (1), and the end face of each lifting frame (10) and the face, which is opposite to the multimedia box (1), are movably connected with the installation bottom plate (5) through a traction rod (12).

7. An educational multimedia projection apparatus as claimed in claim 1, wherein: the mounting frame (3) and the limiting block (11) are fixedly connected with a ceiling, and the front protection plate (17), the side protection plate (18) and the rear protection plate (19) are tightly connected with the ceiling.