CN115440097A

CN115440097A - Computer multimedia distance education device

Info

Publication number: CN115440097A
Application number: CN202211170811.7A
Authority: CN
Inventors: 张文杰
Original assignee: Xinxiang University
Current assignee: Xinxiang University
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2022-12-06

Abstract

The invention belongs to the technical field of education, and particularly relates to a computer multimedia remote education device which comprises a box body, a display screen and a camera, wherein the display screen is installed on the surface of the box body, the camera is arranged on the front end face of the display screen, a support rod of an L-shaped structure is arranged above the display screen, and a writing mechanism is installed inside the box body.

Description

Computer multimedia distance education device

Technical Field

The invention belongs to the technical field of education technology, and particularly relates to a computer multimedia remote education device.

Background

The remote education is a novel education mode generated along with the development of modern novel information technology, and can break through space-time limitation, provide learning opportunities for more people, enlarge teaching scale and improve teaching quality; present computer multimedia distance education device need make a video recording through camera equipment in real time in the use, therefore the teacher or carry out remote video teaching through the teaching mode of blackboard chalk, this kind of mode relies on the teacher completely to write on the spot, working strength is big, inefficiency, or carry out remote video teaching through the teaching mode of projecting apparatus or display screen, this kind of mode relies on the teacher to carry out multimedia in advance completely and prepares lessons, then broadcast the teaching content on the spot, the unable nimble extension of teacher content of giving lessons.

To this end, we propose a computer multimedia distance education apparatus to solve the above problems.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a computer multimedia remote education device which can assist a display screen in teaching activities and flexibly expand teaching contents, so that a teacher can more easily and flexibly teach, teaching efficiency can be obviously improved, the position of a camera can be conveniently adjusted, and the camera can be aligned to the display screen or a writing board to teach in the remote education process.

In order to achieve the purpose, the invention provides the following technical scheme: a computer multimedia remote education device comprises a box body, a display screen and a camera, wherein the display screen is installed on the surface of the box body, the camera is arranged on the front end face of the display screen, a support rod with an L-shaped structure is arranged above the display screen, one end of the support rod is fixed on the surface of the camera, and a writing mechanism is installed inside the box body;

write the mechanism including accomodate the subassembly, write subassembly and adjusting part, write the subassembly and install write the inside of mechanism, the subassembly is write to the back end face of display screen installation, adjusting part sets up one side of writing the subassembly.

Preferably, the accommodating component comprises a driving rod, a hand wheel, a transmission gear A, a single toothed plate A, a supporting plate, a positioning rod, a connecting rod and a positioning sleeve, the driving rod is arranged in the box body, two ends of the driving rod are rotatably connected to the inside of the box body through a bearing A, one end of the driving rod penetrates through the inside of the box body, extends to one side of the box body and is connected with the hand wheel arranged on one side of the box body, the transmission gear A is fixed on the surface of the driving rod, the surface of the transmission gear A is connected with the single toothed plate A in a meshing manner, the supporting plate is fixed between the display screen and the single toothed plate A, the positioning rods are symmetrically fixed on two sides of the inside of the box body, the connecting rod is symmetrically fixed on two sides of the lower surface of the supporting plate, and the positioning sleeve is fixed on one end of the connecting rod, which is far away from the supporting plate.

Preferably, the positioning sleeve is provided with a through hole near the positioning rod, and the positioning sleeve and the positioning rod are connected in a sliding manner through the through hole.

Preferably, a guide block is fixed on one side of the single toothed plate A, which is far away from the transmission gear A, a guide groove is formed in one side of the box body, which is close to the guide block, the single toothed plate A and the box body are in sliding connection through the guide block and the guide groove, a containing groove matched with the transmission gear A is formed in the surface of the box body, the transmission gear A and the box body are in sliding connection through the containing groove, and a limit ring is fixed on the surface of one end, which is far away from the display screen, of the positioning rod.

Preferably, the writing component comprises a writing frame, a pull handle, a writing board, a single toothed plate B, a transmission gear B, rotating rods, synchronizing wheels and a synchronous belt, wherein the writing frame is fixed on the back end surface of the display screen, the pull handle is arranged at the open end of the writing frame, the writing board is fixed on one side of the pull handle close to the writing frame, the single toothed plate B is fixed on one side of the writing board far away from the writing frame, the transmission gear B is connected with one side of the single toothed plate B with teeth in a meshed manner, two groups of rotating rods are rotatably connected with one side of the writing frame close to the transmission gear B through a bearing B, the transmission gear B is fixed on the surface of one group of the rotating rods, the synchronizing wheels are fixed on the surfaces of the two groups of the rotating rods, and the two groups of the synchronizing wheels are connected through the synchronous belt.

Preferably, the writing assembly further comprises an ash wiping seat, an ash wiping plate and springs, the ash wiping seat is fixed on one side of the writing frame close to the display screen, a abdication groove is formed in the ash wiping seat, the ash wiping plate is arranged between the ash wiping seat and the writing plate, the ash wiping plate and the ash wiping seat are connected in a sliding mode through the abdication groove, and the springs are fixed between the ash wiping plate and the ash wiping seat.

Preferably, the support plate is fixed with a fixing plate B on the surface close to the two sets of rotating rods, the ends of the two sets of rotating rods far away from the writing frame are rotatably connected to one side of the two sets of fixing plates B through a bearing C, and the rotating rod set far away from the transmission gear B penetrates through the surface of one set of fixing plates B, extends to one side of the fixing plates B, and is connected with a bevel gear a arranged on one side of the fixing plates B.

Preferably, the writing frame is provided with a moving groove therein, the moving groove being matched with the writing board, and the writing board and the writing frame are slidably connected through the moving groove.

Preferably, the adjusting assembly comprises a fixing plate A, a threaded rod, a threaded seat, a limiting block and a bevel gear B, wherein the threaded rod is arranged at one end of the bevel gear A, which is far away from the rotating rod, the two ends of the threaded rod are both rotatably connected with the fixing plate A through a bearing D, the two groups of fixing plates A are respectively fixed at two sides of the surface of the supporting plate, the threaded seat is in threaded connection with the surface of the threaded rod, the limiting block is fixed at one side of the threaded seat, which is close to the supporting plate, the surface of the supporting plate, which is close to the limiting block, is provided with a limiting groove, the limiting block and the supporting plate are in sliding connection through the limiting groove, the bevel gear B is fixed at the surface of the threaded rod, which is close to the bevel gear A, and the bevel gear B is in meshed connection with the bevel gear A.

Preferably, the support rod is fixed to the surface of the screw base at an end thereof remote from the camera.

Compared with the prior art, the invention has the beneficial effects that:

through setting up writing mechanism, accomodate the inside of advancing the box with display screen and camera, not only can protect display screen and camera, can also reduce occupation space, can assist the display screen activity of imparting knowledge to students, extension teaching content that can be nimble, make teacher's teaching process relax more nimble, teaching efficiency also can be showing and promote, can be quick clean the handwriting on wiping grey board surface, reduce the intensity of labour that artifical was cleaned, be convenient for adjust the position of camera, can make the camera aim at display screen or clipboard at the remote education in-process teaching of giving lessons.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the case of the present invention;

FIG. 3 is a schematic view of a display panel according to the present invention;

FIG. 4 is a schematic view of the expanded structure of the writing board of the present invention;

FIG. 5 is a schematic view of the construction of the writing assembly of the present invention;

FIG. 6 is a schematic view of the adjusting assembly of the present invention;

FIG. 7 is a cross-sectional view of the ash wiping seat of the present invention.

In the figure:

1. a box body; 2. a display screen; 21. a camera; 22. a support bar;

3. a writing mechanism;

31. a receiving assembly; 311. a drive rod; 312. a hand wheel; 313. a transmission gear A; 314. a single toothed plate A; 3141. a guide block; 3142. a guide groove; 315. a support plate; 316. positioning a rod; 3161. a limiting ring; 317. a connecting rod; 318. a positioning sleeve;

32. a writing assembly; 321. a writing frame; 322. pulling a handle; 323. a writing board; 324. a single toothed plate B; 325. a transmission gear B; 326. a dust wiping seat; 3261. a yielding groove; 3262. wiping an ash plate; 3263. a spring; 327. rotating the rod; 3271. a fixing plate B; 3272. a bevel gear A; 328. a synchronizing wheel; 329. a synchronous belt;

33. an adjustment assembly; 331. fixing a plate A; 332. a threaded rod; 333. a threaded seat; 334. a limiting block; 335. a limiting groove; 336. and a bevel gear B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1:

a computer multimedia remote education device comprises a box body 1, a display screen 2 arranged on the surface of the box body 1 and a camera 21 arranged on the front end face of the display screen 2, wherein a support rod 22 of an L-shaped structure is arranged above the display screen 2, one end of the support rod 22 is fixed on the surface of the camera 21, and a writing mechanism 3 is arranged in the box body 1;

writing mechanism 3 is including accomodating subassembly 31, writing subassembly 32 and adjusting part 33, and writing subassembly 32 is installed in writing mechanism 3's inside, and writing subassembly 32 is installed to the back end of display screen 2, and adjusting part 33 sets up the one side at writing subassembly 32.

As shown in fig. 1-7:

further, the following steps:

in combination with the above, the storage assembly 31 includes a driving rod 311, a hand wheel 312, a transmission gear a313, a single toothed plate a314, a support plate 315, a positioning rod 316, a connecting rod 317, and a positioning sleeve 318, the driving rod 311 is disposed inside the box body 1, two ends of the driving rod 311 are both rotatably connected inside the box body 1 through a bearing a, one end of the driving rod 311 penetrates through the inside of the box body 1 and extends to one side of the box body 1, and is connected with the hand wheel 312 disposed on one side of the box body 1, the transmission gear a313 is fixed on the surface of the driving rod 311, the single toothed plate a314 is engaged and connected to the surface of the transmission gear a313, the support plate 315 is fixed between the display screen 2 and the single toothed plate a314, the positioning rods 316 are symmetrically fixed on two sides inside the box body 1, the connecting rods 317 are symmetrically fixed on two sides of the lower surface of the support plate 315, and the positioning sleeve 318 is fixed on one end of the connecting rod 317 away from the support plate 315.

In this embodiment: when remote teaching is needed, the device is firstly moved to a designated position, then the hand wheel 312 is rotated, the driving rod 311 is driven to rotate inside the box body 1, the transmission gear A313 is driven to rotate inside the box body 1, the driving gear A313 can drive the single-tooth plate A314 to move upwards inside the box body 1 along with the rotation of the transmission gear A313, then the supporting plate 315 is driven to move upwards, the connecting rod 317 is used for driving the positioning sleeve 318 to slide on the surface of the positioning rod 316, the display screen 2 and the camera 21 and the supporting rod 22 above the display screen are lifted to the surface of the box body 1, the camera 21 is opened at the moment, the content on the surface of the display screen 2 is shot through the camera 21, and remote teaching is carried out through a mobile phone video conference.

It should be noted that: the shooting angle of the camera 21 completely covers the surface of the display screen 2, and the contents on the surface of the display screen 2 can be shot in all directions.

Further, the method comprises the following steps:

in combination with the above, a through hole is formed in the positioning sleeve 318 close to the positioning rod 316, the positioning sleeve 318 and the positioning rod 316 are connected in a sliding manner through the through hole, a guide block 3141 is fixed on one side, away from the transmission gear a313, of the single tooth plate a314, a guide groove 3142 is formed in one side, close to the guide block 3141, of the box body 1, the single tooth plate a314 and the box body 1 are connected in a sliding manner through the guide block 3141 and the guide groove 3142, a containing groove matched with the transmission gear a313 is formed in the surface of the box body 1, the transmission gear a313 and the box body 1 are connected in a sliding manner through the containing groove, and a limiting ring 3161 is fixed on the surface of one end, away from the display screen 2, of the positioning rod 316.

In this embodiment: through the removal of monodentate board A314, can drive guide block 3141 and slide in the inside of guide way 3142, then it is spacing to monodentate board A314's removal, improve the stability that promotes backup pad 315 and remove, through reversal hand wheel 312, then it is rotatory in the inside of box 1 to reverse drive actuating lever 311, and then drive monodentate board A314 through drive gear A313 and remove downwards, thereby drive backup pad 315 and remove downwards, the inside of accomodating into box 1 with display screen 2 and camera 21 is realized, not only can protect display screen 2 and camera 21, can also reduce occupation space, through spacing ring 3161's setting, can restrict the sliding distance of position sleeve 318 on positioning rod 316 surface.

It should be noted that: hand wheel 312's fixed surface has location bolt (not shown in the figure), and set up on the surface of box 1 with location bolt (not shown in the figure) assorted location slot (not shown in the figure), along with hand wheel 312's rotation, when display screen 2 and camera 21 rise from the inside of box 1 completely, through inserting the location bolt in the location slot, and then lock the position of display screen 2 and camera 21, on the contrary, after the inside of carrying out box 1 is accomodate to display screen 2 and camera 21, through inserting the location bolt in the location slot, can accomodate display screen 2 and camera 21.

Further, the following steps:

in combination with the above, the writing assembly 32 includes a writing frame 321, a pull handle 322, a writing board 323, a single tooth board B324, a transmission gear B325, rotating rods 327, a synchronizing wheel 328 and a synchronizing belt 329, the writing frame 321 is fixed on the back end surface of the display screen 2, the pull handle 322 is disposed at the open end of the writing frame 321, the writing board 323 is fixed on one side of the pull handle 322 close to the writing frame 321, the single tooth board B324 is fixed on one side of the writing board 323 away from the writing frame 321, the transmission gear B325 is connected to one side of the single tooth board B324 with teeth in a meshing manner, two sets of rotating rods 327 are rotatably connected to one side of the writing frame 321 close to the transmission gear B325 through a bearing B, the transmission gear B325 is fixed on the surface of one set of the rotating rods 327, the synchronizing wheel 328 is fixed on the surface of each set of the two sets of rotating rods 327, the two sets of synchronizing wheels 328 are connected through the synchronizing belt 329, a moving groove matched with the writing board 323 is formed in the writing frame 321, and the writing board 323 and the writing frame 321 is slidably connected through the moving groove.

In this embodiment: when the teacher need write the extension to the teaching content, draw handle 322 to drive clipboard 323 and take out from the inside of writing frame 321 through the pulling, along with clipboard 323's removal, can drive single-tooth board B324 and carry out synchronous motion, then drive gear B325 rotates on the surface of dwang 327, and then drive dwang 327 rotates, rotation through dwang 327 can drive synchronizing wheel 328 and rotate, again by the setting of hold-in range 329, can realize that two sets of synchronizing wheel 328 carry out the syntropy and rotate with the speed, and then drive bevel gear A3272 and rotate, through clipboard 323, can assist display screen 2 and carry out the teaching activity, extension teaching content that can be nimble, make teacher's teaching process light more nimble, teaching efficiency also can be shown and promote.

It should be noted that: a guide rail (not shown) is provided inside the moving groove, and the friction force between tablet 323 and writing frame 321 can be reduced by the guide rail, so that tablet 323 can be easily drawn out from the inside of writing frame 321.

Further, the following steps:

in combination with the above, the writing assembly 32 further includes an ash wiping seat 326, an ash wiping plate 3262 and a spring 3263, the ash wiping seat 326 is fixed on one side of the writing frame 321 close to the display screen 2, an abdicating groove 3261 is formed inside the ash wiping seat 326, the ash wiping plate 3262 is arranged between the ash wiping seat 326 and the writing plate 323, the ash wiping plate 3262 and the ash wiping seat 326 are slidably connected through the abdicating groove 3261, a plurality of springs 3263 are fixed between the ash wiping plate 3262 and the ash wiping seat 326, a fixing plate B3271 is fixed on a surface of the support plate 315 close to the two sets of rotating rods 327, one ends of the two sets of rotating rods 327 far away from the writing frame 321 are rotatably connected to one side of the two sets of fixing plates B3271 through a bearing C, and one set of rotating rods 327 far away from one side of the transmission gear B325 penetrates through a surface of one set of the fixing plates B3271 and extends to one side of the fixing plates B3271 and is connected with a bevel gear a3272 arranged on one side of the fixing plate B3271.

In this embodiment: after writing board 323 is drawn out of writing frame 321, a teacher writes on the surface of writing board 323, and when the content on the surface of writing board 323 needs to be wiped, pushing pull handle 322 drives writing board 323 to be pushed into writing frame 321, and during this period, ash scraping board 3262 can be pushed to cling to the surface of writing board 323 by the elastic force of spring 3263, and then the handwriting on the surface can be wiped by the movement of writing board 323, so that the labor intensity of manual wiping is reduced.

It should be noted that: the force of spring 3263 presses eraser plate 3262 against the surface of tablet 323.

Further, the following steps:

in combination with the above, the adjusting assembly 33 includes a fixing plate a331, a threaded rod 332, a threaded seat 333, a limiting block 334 and a bevel gear B336, where one end of the bevel gear a3272, which is far away from the rotating rod 327, is provided with the threaded rod 332, both ends of the threaded rod 332 are rotatably connected with the fixing plate a331 through a bearing D, and two sets of fixing plates a331 are respectively fixed on both sides of the surface of the supporting plate 315, the threaded seat 333 is in threaded connection with the surface of the threaded rod 332, the limiting block 334 is fixed on one side of the threaded seat 333, which is close to the supporting plate 315, a limiting groove 335 is formed on the surface of the supporting plate 315, the limiting block 334 and the supporting plate 315 are in sliding connection through the limiting groove 335, the bevel gear B336 is fixed on the surface of the threaded rod 332, which is close to the bevel gear a3272, the bevel gear B336 and the bevel gear a3272 are in meshing connection, and one end of the supporting rod 22, which is far away from the camera 21, is fixed on the surface of the threaded seat 333.

In this embodiment: along with bevel gear A3272's rotation, can drive bevel gear B336 and rotate, then drive threaded rod 332 and rotate between two fixed plate A331, and then drive screw thread seat 333 and remove under the cooperation of stopper 334 and spacing groove 335, along with the removal of screw thread seat 333, can drive bracing piece 22 and camera 21 and remove, thereby realize adjusting the position of camera 21, can make camera 21 aim at display screen 2 or clipboard 323 teaching of giving lessons at the distance education in-process.

It should be noted that: when tablet 323 is housed inside writing frame 321, camera 21 faces the surface of display screen 2, and in this case, the contents on the surface of display screen 2 can be imaged and taught, and when tablet 323 is extracted from inside writing frame 321, camera 21 faces the surface of tablet 323, and in this case, the contents on the surface of tablet 323 can be imaged and taught.

Working principle, when in use: when remote teaching is needed, firstly, the device is moved to a designated position, then the hand wheel 312 is rotated, then the driving rod 311 is driven to rotate in the box body 1, further the transmission gear A313 is driven to rotate in the box body 1, the single-tooth plate A314 can be driven to move upwards in the box body 1 along with the rotation of the transmission gear A313, then the supporting plate 315 is pushed to move upwards, further the connecting rod 317 drives the positioning sleeve 318 to slide on the surface of the positioning rod 316, so that the display screen 2 and the camera 21 and the supporting rod 22 above the display screen are lifted to the surface of the box body 1, at the moment, the camera 21 is started, the content on the surface of the display screen 2 is shot through the camera 21, remote teaching is carried out through a mobile video conference, when a teacher needs to write and expand teaching content, the writing plate 323 is driven to be drawn out from the inside of the writing frame 321 through pulling the pull handle 322, along with the movement of the writing plate 323, can drive the single-tooth board B324 to move synchronously, then drive the transmission gear B325 to rotate on the surface of the rotating rod 327, further drive the rotating rod 327 to rotate, the synchronizing wheel 328 can be driven to rotate by the rotation of the rotating rod 327, then the synchronous belt 329 is arranged to realize the same-speed and same-direction rotation of the two groups of synchronizing wheels 328, further drive the bevel gear A3272 to rotate, along with the rotation of the bevel gear A3272, the bevel gear B336 can be driven to rotate, then the threaded rod 332 is driven to rotate between the two fixing plates A331, further the threaded seat 333 is driven to move under the matching of the limiting block 334 and the limiting groove 335, along with the movement of the threaded seat 333, the supporting rod 22 and the camera 21 can be driven to move, thereby realizing the position adjustment of the camera 21, and enabling the camera 21 to aim at the display screen 2 or the writing plate 323 for teaching in the remote education process, when the content on the surface of writing board 323 needs to be wiped, pushing pull handle 322 drives writing board 323 to push into writing frame 321, in the period, ash wiping board 3262 can be pushed to cling to the surface of writing board 323 through the elastic force of spring 3263, and then the handwriting on the surface can be wiped by the movement of writing board 323, so that the labor intensity of manual wiping is reduced, when writing board 323 is accommodated in writing frame 321, camera 21 faces the surface of display screen 2, at this time, the content on the surface of display screen 2 can be shot and taught, when writing board 323 is pulled out from the inside of writing frame 321, camera 21 faces the surface of writing board 323, at this time, the content on the surface of writing board 323 can be shot and taught.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a computer multimedia distance education device, includes box (1) and installs display screen (2) and the setting on box (1) surface are in camera (21) of terminal surface before display screen (2), the top of display screen (2) is provided with bracing piece (22) of L type structure, just the one end of bracing piece (22) is fixed the surface of camera (21), its characterized in that: a writing mechanism (3) is arranged in the box body (1);

write mechanism (3) including accomodate subassembly (31), write subassembly (32) and adjusting part (33), write subassembly (32) and install write the inside of mechanism (3), write subassembly (32) are installed to the back of the body terminal surface of display screen (2), adjusting part (33) set up write one side of subassembly (32).

2. The computer multimedia distance education apparatus of claim 1 wherein: the storage assembly (31) comprises a driving rod (311), a hand wheel (312), a transmission gear A (313), a single toothed plate A (314), a supporting plate (315), a positioning rod (316), a connecting rod (317) and a positioning sleeve (318), wherein the driving rod (311) is arranged inside the box body (1), two ends of the driving rod (311) are rotatably connected inside the box body (1) through a bearing A, one end of the driving rod (311) penetrates through the inside of the box body (1) and extends to one side of the box body (1) and is connected with the hand wheel (312) arranged on one side of the box body (1), the transmission gear A (313) is fixed on the surface of the driving rod (311), the surface of the transmission gear A (313) is connected with the single toothed plate A (314) in a meshed mode, the supporting plate (315) is fixed between the display screen (2) and the single toothed plate A (314), the positioning rod (316) is symmetrically fixed on two sides inside the box body (1), the connecting rod (317) is symmetrically fixed on two sides of the lower surface of the supporting plate (315), and the positioning sleeve (318) is fixed on one end of the supporting plate (315).

3. The computer multimedia distance education apparatus of claim 2 wherein: the positioning sleeve (318) is provided with a through hole close to the inner part of the positioning rod (316), and the positioning sleeve (318) is connected with the positioning rod (316) in a sliding manner through the through hole.

4. The computer multimedia distance education apparatus of claim 2 wherein: one side of the single-tooth plate A (314), which is far away from the transmission gear A (313), is fixed with a guide block (3141), one side of the box body (1), which is close to the guide block (3141), is provided with a guide groove (3142), the single-tooth plate A (314) and the box body (1) are in sliding connection through the guide block (3141) and the guide groove (3142), the surface of the box body (1) is provided with an accommodating groove matched with the transmission gear A (313), the transmission gear A (313) and the box body (1) are in sliding connection through the accommodating groove, and one end, which is far away from the display screen (2), of the positioning rod (316) is fixed with a limiting ring (3161).

5. The computer multimedia distance education apparatus of claim 3 wherein: write subassembly (32) including write frame (321), draw handle (322), clipboard (323), single tooth board B (324), drive gear B (325), dwang (327), synchronizing wheel (328) and hold-in range (329), write frame (321) is fixed the back terminal surface of display screen (2), the opening end of writing frame (321) is provided with draws handle (322), draw handle (322) to be close to one side of writing frame (321) is fixed with clipboard (323), clipboard (323) are kept away from one side of writing frame (321) is fixed with single tooth board B (324), one side meshing that single tooth board B (324) had the tooth is connected with drive gear B (325), it is close to write frame (321) one side of drive gear B (325) is connected with two sets of through bearing B rotation of dwang (327), just drive gear B (325) are fixed at one of them set of the surface of drive gear (327), the surface of two sets of (327) all is fixed with synchronizing wheel (328), and two sets of synchronizing wheel (328) between the synchronizing wheel (328) are connected through hold-in range (329).

6. The computer multimedia distance education apparatus of claim 5 wherein: the writing component (32) further comprises a dust wiping seat (326), a dust wiping plate (3262) and a spring (3263), the dust wiping seat (326) is fixed on one side, close to the display screen (2), of the writing frame (321), a yielding groove (3261) is formed in the dust wiping seat (326), the dust wiping plate (3262) is arranged between the dust wiping seat (326) and the writing plate (323), the dust wiping plate (3262) is connected with the dust wiping seat (326) in a sliding mode through the yielding groove (3261), and the springs (3263) are fixed between the dust wiping plate (3262) and the dust wiping seat (326).

7. The computer multimedia distance education apparatus of claim 5 wherein: backup pad (315) are close to two sets ofly the surface of dwang (327) all is fixed with fixed plate B (3271), and two sets ofly dwang (327) are kept away from write the one end of frame (321) all through bearing C rotation connection two sets ofly one side of fixed plate B (3271), keep away from a set of drive gear B (325) one side dwang (327) run through one of them set of the surface of fixed plate B (3271) extends to one side of fixed plate B (3271), and with set up and be in bevel gear A (3272) on fixed plate B (3271) one side are connected.

8. The computer multimedia distance education apparatus of claim 5, wherein: the writing board is characterized in that a moving groove matched with the writing board (323) is formed in the writing frame (321), and the writing board (323) is connected with the writing frame (321) in a sliding mode through the moving groove.

9. The computer multimedia distance education apparatus of claim 7 wherein: the adjusting component (33) comprises a fixing plate A (331), a threaded rod (332), a threaded seat (333), a limiting block (334) and a bevel gear B (336), wherein the threaded rod (332) is arranged at one end, away from the rotating rod (327), of the bevel gear A (3272), the two ends of the threaded rod (332) are rotatably connected with the fixing plate A (331) through a bearing D, the two fixing plates A (331) are fixed to two sides of the surface of the supporting plate (315) respectively, the threaded seat (333) is in threaded connection with the surface of the threaded rod (332), the limiting block (334) is fixed to one side, close to the supporting plate (315), of the supporting plate (315), a limiting groove (335) is formed in the surface, close to the limiting block (334), the limiting block (334) is in sliding connection with the supporting plate (315) through the limiting groove (335), the bevel gear B (336) is fixed to the surface, close to the bevel gear A (3272), of the threaded rod (332), and the bevel gear B (336) is in meshed connection with the bevel gear A (3272).

10. The computer multimedia distance education apparatus of claim 9 wherein: one end of the support rod (22) far away from the camera (21) is fixed on the surface of the threaded seat (333).