Projection device for multimedia teaching

Abstract

The utility model provides a projection device for multimedia teaching, which comprises a mounting seat, a sliding cylinder is arranged in the middle of the lower surface of the mounting seat, an internal thread column is slidably arranged in the sliding cylinder, the bottom end of the internal thread column is fixedly connected with a rack through bolts, and a mounting box is rotatably arranged in the rack through two rotating shafts. A projection lens is arranged on the right side of the front side face of the mounting box, heat dissipation holes are formed in the left side of the front side face of the mounting box, and a projection module is arranged on the right side in the mounting box and matched with the projection lens. According to the projection device for multimedia teaching, the height and the rotation angle of the installation box can be rapidly and conveniently adjusted, so that the installation box drives the projection lens to rotate to the optimal projection state, and damage caused by collision can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching tools, and particularly relates to a projection device for multimedia teaching. Background Art

[0002] Multimedia teaching is a teaching method that uses multimedia technology to support the teaching process. It combines multiple media forms such as text, images, sound, video, and technical equipment such as computers, projectors, and the Internet to present teaching content to students in a more vivid, intuitive, and diverse way.

[0003] Existing projection devices for multimedia teaching usually include a support rod connecting the housing of the projection device. During installation, personnel need to pre-set the height and angle of the projection lens to facilitate subsequent multimedia teaching. However, during actual use, the pre-set height and angle of the projection lens may change due to various external factors, which in turn affects the projection quality. The adjustment of the projection lens is time-consuming and labor-intensive, which is not conducive to human use. Utility Model Content

[0004] In view of this, the utility model aims at the deficiencies of the prior art and provides a multimedia teaching projection device, which can quickly and conveniently adjust the height and rotation angle of the installation box so that the installation box drives the projection lens to rotate to the optimal projection state, and can also effectively prevent damage caused by collision.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a projection device for multimedia teaching, including a mounting seat, a slide cylinder is arranged in the middle of the lower surface of the mounting seat, an internal threaded column is slidably arranged inside the slide cylinder, the bottom end of the internal threaded column is fixed to a frame by bolts, an installation box is rotatably arranged inside the frame through two rotating shafts, a projection lens is arranged on the right side of the front side of the installation box, a heat dissipation hole is arranged on the left side of the front side of the installation box, a projection module is arranged on the right side of the installation box, the projection module is installed in coordination with the projection lens, a lifting control module for driving the projection lens to lift and lower is also arranged on the mounting seat, and a rotation control module for driving the projection lens to rotate is also arranged on the frame; a dust cover is rotatably arranged on the front side of the frame.

[0006] As a further improvement of the utility model, the lifting control module includes an adjusting screw rod rotatably arranged in the middle of the lower surface of the mounting seat, the adjusting screw rod 1 is threadedly connected to the internal threaded column, and a motor 1 is rotatably arranged inside the mounting seat, and the output shaft of the motor 1 is fixed to the adjusting screw rod 1 by a coupling.

[0007] As a further improvement of the present invention, the rotation control module includes a rotating plate fixedly sleeved on the outer arc surfaces of the two rotating shafts, and the rear ends of the rotating plates are welded and fixed with a one-tenth gear ring. Two guide rails symmetrically distributed on the left and right are welded and fixed inside the frame, and a connecting rod is slidably arranged between the two guide rails. Rack plates are fixed on the left and right sides of the connecting rod by screws, and the rack plates are respectively meshed and connected with adjacent one-tenth gear rings. An electric drive unit for driving the rack plate to move is also arranged on the frame; the electric drive unit includes an adjusting screw rod 2 rotatably arranged inside the frame, and the adjusting screw rod 2 is threadedly connected to a threaded groove opened in the middle of the connecting rod, and a driving assembly for driving the adjusting screw rod 2 to rotate is also arranged inside the frame; the driving assembly includes a motor 2 arranged on the rear side of the upper surface of the frame, and the output shaft of the motor 2 is fixed to the adjusting screw rod 2 by a coupling.

[0008] As a further improvement of the present invention, a main board is arranged on the left side inside the installation box, a processor is arranged on the right side of the upper surface of the main board, a memory is arranged on the front side of the upper surface of the main board, and a GSM wireless communicator is arranged on the rear side of the upper surface of the main board. Motor 1, motor 2, projection module, memory and GSM wireless communicator are all electrically connected to the processor.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] First, the processor controls the operation of motor 1, and the output shaft of motor 1 drives the adjusting screw 1 connected thereto to rotate, so that the internal threaded column drives the frame to move downward, so that the projection lens is at a suitable height for projection. When not in use, the projection lens can be moved to the highest point, which can effectively prevent damage caused by collision.

[0011] Secondly, the processor controls the operation of motor 2, so that the adjusting screw rod 2 drives the connecting rod connected to it to slide between the two guide rails, and the meshing relationship between the rack plate and the one-tenth gear ring causes the rotating plate connected to the one-tenth gear ring to rotate, so that the rotating plate drives the rotating shaft to rotate, and by adjusting the height and rotation angle of the installation box, the installation box drives the projection lens to rotate to the optimal projection state.

[0012] Thirdly, the processor controls the operation of the projection module, the memory and the GSM wireless communicator. The cooperation of the projection module, the memory and the GSM wireless communicator can conveniently and quickly assist the teacher in multimedia teaching.

[0013] Fourthly, in daily use, the dust shield is used to shield the outside of the installation box and the projection lens, which can effectively reduce the dust on the outside of the installation box and the projection lens and reduce the cleaning burden of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

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

[0016] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal plane structure of the utility model.

[0019] In the figure: 101, mounting base; 102, slide; 103, internal threaded column; 104, frame; 105, rotating shaft; 106, mounting box; 107, projection lens; 108, heat dissipation hole; 109, dust cover; 110, projection module; 111, adjusting screw rod 1; 112, motor 1; 201, rotating plate; 202, one-tenth gear ring; 203, guide rail; 204, connecting rod; 205, rack plate; 206, adjusting screw rod 2; 207, motor 2; 301, main board; 302, processor; 303, memory; 304, GSM wireless communicator. DETAILED DESCRIPTION

[0020] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0021] like Figure 1 , 2 As shown in , 4, it includes a mounting base 101, a slide 102 is provided in the middle of the lower surface of the mounting base 101, an internal threaded column 103 is slidably provided inside the slide 102, the bottom end of the internal threaded column 103 is fixed to a frame 104 by bolt connection, and an installation box 106 is rotatably provided inside the frame 104 through two rotating shafts 105, a projection lens 107 is provided on the right side of the front side of the installation box 106, a heat dissipation hole 108 is provided on the left side of the front side of the installation box 106, a projection module 110 is provided on the right side of the installation box 106, and the projection module 110 is installed in cooperation with the projection lens 107, a lifting control module for driving the projection lens 107 to lift and lower is also provided on the mounting base 101, and a rotation control module for driving the projection lens 107 to rotate is also provided on the frame 104.

[0022] like Figure 1 , 2 As shown in , 4, the lifting control module includes an adjusting screw rod 111 rotatably arranged in the middle of the lower surface of the mounting seat 101, the adjusting screw rod 111 is threadedly connected with the internal threaded column 103, and a motor 112 is rotatably arranged inside the mounting seat 101, and the output shaft of the motor 112 is fixed to the adjusting screw rod 111 by a coupling.

[0023] like Figure 2 , 3 4, the rotation control module includes a rotating plate 201 fixedly sleeved on the outer arc surface of the two rotating shafts 105, and a tenth gear ring 202 is welded and fixed to the rear end of the rotating plate 201. Two guide rails 203 symmetrically distributed on the left and right are welded and fixed inside the frame 104. A connecting rod 204 is slidably arranged between the two guide rails 203. The left and right sides of the connecting rod 204 are fixed with rack plates 205 by screw connection. The rack plates 205 are respectively meshed and connected with adjacent tenth gear rings 202. The frame 104 An electric drive unit for driving the rack plate 205 to move is also provided on it; the electric drive unit includes an adjusting screw rod 206 rotatably arranged inside the frame 104, and the adjusting screw rod 206 is threadedly connected to a threaded groove opened in the middle of the connecting rod 204. A driving component for driving the adjusting screw rod 206 to rotate is also provided on the frame 104; the driving component includes a motor 207 arranged on the rear side of the upper surface of the frame 104, and the output shaft of the motor 207 is fixed to the adjusting screw rod 206 by a coupling.

[0024] like Figure 2 , 3 As shown, a main board 301 is arranged on the left side inside the installation box 106, a processor 302 is arranged on the right side of the upper surface of the main board 301, a memory 303 is arranged on the front side of the upper surface of the main board 301, and a GSM wireless communicator 304 is arranged on the rear side of the upper surface of the main board 301. Motor 1 112, motor 207, projection module 110, memory 303 and GSM wireless communicator 304 are all electrically connected to the processor 302.

[0025] When projection is required in multimedia teaching, the personnel controls the processor 302 to run through the external controller, and then the processor 302 controls the motor 112 and the motor 207 to run, and the output shaft of the motor 112 drives the adjusting screw 111 connected thereto to rotate, and then the adjusting screw 111 drives the internal threaded column 103 threadedly connected thereto to slide with the slide 102, and then the internal threaded column 103 drives the frame 104 to move downward, so that the projection lens 107 is at a suitable height for projection, and the output shaft of the motor 207 drives the adjusting screw 1 ... adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 drives the adjusting screw 111 to rotate, and then the adjusting screw 111 The adjusting screw rod 206 connected thereto is driven to rotate, and then the adjusting screw rod 206 drives the connecting rod 204 connected thereto to slide between the two guide rails 203, so that the connecting rod 204 drives the rack plates 205 on the left and right sides to rise or fall, and then through the meshing relationship between the rack plate 205 and the one-tenth gear ring 202, the rotating plate 201 connected to the one-tenth gear ring 202 is driven to rotate, so that the rotating plate 201 drives the rotating shaft 105 to rotate, and the installation box 106 drives the projection lens 107 to rotate to the optimal projection angle.

[0026] The processor 302 is controlled by an external controller to operate, so that the processor 302 controls the operation of the projection module 110, the memory 303 and the GSM wireless communicator 304. The cooperation of the projection module 110, the memory 303 and the GSM wireless communicator 304 can conveniently and quickly assist teachers in multimedia teaching.

[0027] According to another embodiment of the present invention, Figure 1 , 2 4, a dust shield 109 is rotatably provided on the front side of the frame 104. In daily use, the dust shield 109 is rotated to a suitable angle to shield the installation box 106 and the projection lens 107, which can effectively reduce the dust outside the installation box 106 and the projection lens 107.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A multimedia teaching projection device, comprising a mounting seat (101), a slide cylinder (102) is arranged in the middle of the lower surface of the mounting seat (101), and an internal thread column (103) is slidably arranged inside the slide cylinder (102), characterized in that: The bottom end of the internal threaded column (103) is fixed to a frame (104) by bolt connection; a mounting box (106) is rotatably arranged inside the frame (104) via two rotating shafts (105); a projection lens (107) is arranged on the right side of the front side of the mounting box (106); a heat dissipation hole (108) is arranged on the left side of the front side of the mounting box (106); a projection module (110) is arranged on the right side of the mounting box (106); the projection module (110) is installed in coordination with the projection lens (107); a lifting control module for driving the projection lens (107) to lift and lower is also arranged on the mounting seat (101); and a rotation control module for driving the projection lens (107) to rotate is also arranged on the frame (104).

2. The multimedia teaching projection device according to claim 1, characterized in that: The lifting control module comprises an adjusting screw rod (111) rotatably arranged in the middle of the lower surface of the mounting seat (101), the adjusting screw rod (111) being threadedly connected to the internal threaded column (103), a motor (112) being rotatably arranged inside the mounting seat (101), and an output shaft of the motor (112) and the adjusting screw rod (111) being fixed via a coupling.

3. The multimedia teaching projection device as claimed in claim 2, characterized in that: The rotation control module comprises a rotating plate (201) fixedly sleeved on the outer arc surface of two rotating shafts (105), a tenth gear ring (202) is welded and fixed to the rear end of the rotating plate (201), two guide rails (203) symmetrically distributed on the left and right are welded and fixed inside the frame (104), a connecting rod (204) is slidably arranged between the two guide rails (203), and rack plates (205) are fixed to the left and right sides of the connecting rod (204) by screw connection, and the rack plates (205) are respectively meshed and connected with adjacent tenth gear rings (202), and the frame (104) is also provided with an electric drive unit for driving the rack plate (205) to move.

4. The multimedia teaching projection device as claimed in claim 3, characterized in that: The electric drive unit comprises an adjusting screw rod 2 (206) rotatably arranged inside the frame (104), the adjusting screw rod 2 (206) being threadedly connected to a thread groove provided in the middle of the connecting rod (204), and a driving assembly for driving the adjusting screw rod 2 (206) to rotate is also provided inside the frame (104).

5. The multimedia teaching projection device as claimed in claim 4, characterized in that: The driving assembly comprises a second motor (207) arranged on the rear side of the upper surface of the frame (104), and the output shaft of the second motor (207) is fixed to the second adjusting screw rod (206) via a coupling.

6. The multimedia teaching projection device according to claim 5, characterized in that: A main board (301) is arranged on the left side of the interior of the installation box (106); a processor (302) is arranged on the right side of the upper surface of the main board (301); a memory (303) is arranged on the front side of the upper surface of the main board (301); a GSM wireless communicator (304) is arranged on the rear side of the upper surface of the main board (301); and the first motor (112), the second motor (207), the projection module (110), the memory (303) and the GSM wireless communicator (304) are all electrically connected to the processor (302).

7. The multimedia teaching projection device according to claim 1, characterized in that: A dust shield (109) is rotatably provided on the front side of the frame (104).

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