A projection device for video teaching

Abstract

The utility model discloses a projection device for video teaching, which relates to the technical field of video teaching equipment, including a projector, a base, and an electric push rod. The circular array on the top of the base has an electric push rod, and the circular array on the top of the base has a cantilever rod. A center cover is fixedly arranged on the top of the cantilever rod, and a rotating motor is fixedly arranged on the bottom of the center cover. A vertical column is fixedly arranged on the output end of the rotating motor, and a composite angle adjustment component for adjusting the projection direction and inclination is arranged on the top of the vertical column. The utility model is provided with a projection device, and the core components of the projection device include a composite angle adjustment component and a projector. The projector is indirectly connected to the tripod through the composite angle adjustment component. The composite angle adjustment component realizes the electric adjustment of the angle and direction of the projector based on the electric push rod and the rotating motor, which can meet the precise adjustment requirements, so that the angle and position of the projected image are sufficiently accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of video teaching equipment, in particular to a projection device for video teaching. Background Art

[0002] The projection device for video teaching usually refers to a projector, which converts the input image signal into visible light through optical and electronic technology, so as to display the content on a large screen. In the teaching scenario, the projector can present the teacher's or lecturer's explanation content, courseware, demonstration video, etc. to students, promote the improvement of teaching effect, and also provide students with a more intuitive and vivid learning experience.

[0003] In the prior art, most projectors are placed directly on the ground through a purely structural tripod. The adjustment of the projector requires the user to operate it personally, which may consume some time and effort. In addition, the manually adjusted bracket may not meet the precise adjustment requirements, resulting in inaccurate angles and positions of the projected images. Summary of the invention

[0004] The purpose of the utility model is to solve the problem that most of the tripods in the prior art are placed directly on the ground through pure structures, and the adjustment of the projector needs to be operated by the user himself, which may consume some time and energy. In addition, the manually adjusted bracket may not meet the precise adjustment requirements, resulting in the angle and position of the projected image being inaccurate. A projection device for video teaching is proposed to solve the problem that most of the tripods in the prior art are placed directly on the ground, and the adjustment of the projector needs to be operated by the user himself, which may consume some time and energy. In addition, the manually adjusted bracket may not meet the precise adjustment requirements, resulting in the angle and position of the projected image being inaccurate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A projection device for video teaching comprises a projector, a base, and an electric push rod, wherein the electric push rods are arranged in a circular array on the top of the base, a top connection tube is fixedly arranged on the output end of the electric push rods, a cantilever rod is arranged in a circular array on the top of the base, a center cover is fixedly arranged on the top of the cantilever rod, a rotating motor is fixedly arranged on the bottom of the center cover, a vertical column is fixedly arranged on the output end of the rotating motor, the vertical column extends from the inner cavity of the top connection tube, and a compound angle adjustment component for adjusting the projection direction and inclination is arranged on the top of the vertical column.

[0007] Optionally, the compound angle adjustment assembly includes a fixed ring, a horizontal column, and a fixed folding seat, the fixed ring is fixedly connected to the top of the vertical column, and the fixed ring is movably inserted into the horizontal column along the horizontal direction.

[0008] Optionally, the horizontal column is fixedly provided with limiting rings on both sides of the fixing ring, and a fixed folding seat is vertically fixedly provided at one end of the horizontal column.

[0009] Optionally, a driven folding rod is vertically fixedly provided at the other end of the horizontal column, and a rubber column is fixedly provided at the end of the driven folding rod.

[0010] Optionally, an arc-shaped cover is provided on the top of the top connection tube, and the diameter of the rubber column is equal to the depth of the gap between the top connection tube and the arc-shaped cover.

[0011] Optionally, mounting holes are provided at four corners of the top of the fixed folding seat, and the projector is fixedly installed in the mounting holes by bolts.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model is provided with a projection device, the core components of which include a compound angle adjustment component and a projector. The projector is indirectly connected to a tripod through the compound angle adjustment component. The compound angle adjustment component realizes electric adjustment of the angle and direction of the projector based on an electric push rod and a rotating motor, which can meet precise adjustment requirements, so that the angle and position of the projected image are sufficiently accurate.

[0014] 2. The composite angle adjustment component of the utility model has two functions at the same time. On the one hand, the direction of the projector lens is adjusted, and on the other hand, the inclination angle of the projector lens can also be accurately adjusted, and the flexibility of adjusting the projection direction of the projector lens is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 for Figure 1 Another perspective structural diagram of .

[0017] Figure 3 It is a structural schematic diagram of the compound angle adjustment component.

[0018] In the figure: 1. Suspension rod; 2. Center cover; 3. Rotating motor; 4. Top connection tube; 5. Electric push rod; 6. Base; 7. Projector; 8. Arc cover; 9. Fixed folding seat; 91. Mounting hole; 10. Driven folding rod; 11. Rubber column; 12. Limiting ring; 13. Fixed ring; 14. Vertical column; 15. Horizontal column. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3A projection device for video teaching includes a projector 7, a base 6, and an electric push rod 5. The electric push rod 5 is arranged in a circular array on the top of the base 6. A top connection tube 4 is fixedly arranged at the output end of the electric push rod 5. A suspension rod 1 is arranged in a circular array on the top of the base 6. A center cover 2 is fixedly arranged on the top of the suspension rod 1. A rotating motor 3 is fixedly arranged at the bottom of the center cover 2. A vertical column 14 is fixedly arranged at the output end of the rotating motor 3. The vertical column 14 extends from the inner cavity of the top connection tube 4, and a smooth hole is opened at the center position of the top connection tube 4 to reduce the resistance of the top connection tube 4 to displacement in the vertical direction.

[0021] A compound angle adjustment component for adjusting the projection direction and inclination is provided at the top of the vertical column 14. The compound angle adjustment component includes a fixed ring 13, a horizontal column 15, and a fixed folding seat 9. The fixed ring 13 is fixedly connected to the top of the vertical column 14. The horizontal column 15 is movably inserted into the fixed ring 13 in the horizontal direction. The horizontal column 15 is fixedly provided with limit rings 12 on both sides of the fixed ring 13. Therefore, the horizontal column 15 can rotate along the axis direction of the fixed ring 13, and finally the projector 7 installed on the fixed folding seat 9 obtains the desired inclination angle.

[0022] A fixed folding seat 9 is vertically fixedly provided at one end of the horizontal column 15, and a driven folding rod 10 is vertically fixedly provided at the other end of the horizontal column 15. A rubber column 11 is fixedly provided at the end of the driven folding rod 10. An arc cover 8 is provided on the top of the top connection tube 4. The diameter of the rubber column 11 is equal to the depth of the gap between the top connection tube 4 and the arc cover 8. Mounting holes 91 are provided at the four corners of the top of the fixed folding seat 9. The mounting holes 91 are fixed with a projector 7 by bolts. When the electric push rod 5 is extended, it will drive the top connection tube 4 to move upward, and the top connection tube 4 and the arc cover 8 cooperate to drive the driven folding rod 10 to rotate, and the driven folding rod 10 finally drives the fixed folding seat 9 to rotate around the fixed ring 13.

[0023] It should be added that in the prior art, the electric push rod 5 is usually equipped with its own controller so that the user can easily adjust it. A common model of the electric push rod 5 is LINAKLA36. This electric push rod 5 has reliable quality and high-precision adjustment function, and is equipped with an advanced control system. At the same time, the control line of the rotating motor 3 can be connected to the controller of the electric push rod 5.

[0024] The specific implementation steps and principles of the utility model are as follows:

[0025] The user starts the rotating motor 3, which drives all the structural parts on the fixed ring 13 to rotate to the required position. At this time, the rubber column 11 is forced to rotate around the inner wall of the gap between the top connection tube 4 and the arc cover 8. Finally, the electric push rod 5 is started. The extension of the electric push rod 5 will drive the top connection tube 4 to move upward. The top connection tube 4 and the arc cover 8 cooperate to drive the driven folding rod 10 to rotate. The driven folding rod 10 finally drives the fixed folding seat 9 to rotate around the fixed ring 13, and adjusts the projector 7 on the fixed folding seat 9 to the required inclination angle.

[0026] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A projection device for video teaching, comprising a projector (7), a base (6), and an electric push rod (5), characterized in that: The top of the base (6) is provided with an electric push rod (5) in a circular array, and the output end of the electric push rod (5) is fixedly provided with a top connection tube (4). The top of the base (6) is provided with a suspension rod (1) in a circular array, and the top of the suspension rod (1) is fixedly provided with a center cover (2), and the bottom of the center cover (2) is fixedly provided with a rotating motor (3). The output end of the rotating motor (3) is fixedly provided with a vertical column (14), and the vertical column (14) extends from the inner cavity of the top connection tube (4). The top of the vertical column (14) is provided with a composite angle adjustment component for adjusting the projection direction and the inclination angle.

2. A projection device for video teaching according to claim 1, characterized in that: The compound angle adjustment assembly comprises a fixed ring (13), a horizontal column (15), and a fixed folding seat (9); the fixed ring (13) is fixedly connected to the top of the vertical column (14); and the fixed ring (13) is movably inserted into the horizontal column (15) along the horizontal direction.

3. A projection device for video teaching according to claim 2, characterized in that: The horizontal column (15) is fixedly provided with limiting rings (12) on both sides of the fixing ring (13), and a fixing folding seat (9) is vertically fixedly provided at one end of the horizontal column (15).

4. A projection device for video teaching according to claim 2, characterized in that: A driven folding rod (10) is vertically fixedly arranged at the other end of the horizontal column (15), and a rubber column (11) is fixedly arranged at the end of the driven folding rod (10).

5. A projection device for video teaching according to claim 4, characterized in that: The top of the top connection tube (4) is provided with an arc-shaped cover (8), and the diameter of the rubber column (11) is equal to the depth of the gap between the top connection tube (4) and the arc-shaped cover (8).

6. A projection device for video teaching according to claim 2, characterized in that: The four corners of the top of the fixed folding seat (9) are provided with mounting holes (91), and the projector (7) is fixedly arranged in the mounting hole (91) by means of bolts.

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