CN116518256B

CN116518256B - Multimedia display for conference

Info

Publication number: CN116518256B
Application number: CN202310599637.6A
Authority: CN
Inventors: 刘福才; 郭军强; 王新鹏; 张辉
Original assignee: Guangdong Dida Kuxian Flexible Display Technology Co ltd
Current assignee: Guangdong Dida Kuxian Flexible Display Technology Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-10-10
Anticipated expiration: 2043-05-25
Also published as: CN116518256A

Abstract

The application discloses a multimedia display for a conference, which comprises a control box, wherein the bottom of the control box is connected with a supporting component, two groups of first display screens and four groups of second display screens are arranged on the outer side of the control box, the two groups of first display screens are oppositely arranged, one group of second display screens are arranged on two sides of each group of first display screens, the first display screens are connected with first telescopic mechanisms fixedly arranged on the side wall of the control box, the second display screens are hinged with second telescopic mechanisms which movably penetrate through the side wall of the control box, movable grooves matched with the second telescopic mechanisms are formed in the side wall of the control box, an adjusting mechanism connected with the second telescopic mechanisms is arranged in the control box and used for driving the second telescopic mechanisms to rotate simultaneously so as to drive the second display screens on two sides of the first display screens to approach to or separate from the corresponding first display screens.

Description

Multimedia display for conference

Technical Field

The application relates to the technical field of multimedia equipment, in particular to a multimedia display for a conference.

Background

The conference all-in-one machine integrates a projector, a curtain, an electronic whiteboard, a sound, a computer, a remote conference terminal and other various devices, has various functions such as an interactive intelligent whiteboard, an interactive document presentation, a split-screen remote conference, a multi-terminal wireless screen transmission, a network multimedia playing and the like, and is mainly applied to the fields of conference office and education training of government and enterprise institutions.

The existing conference all-in-one machine is multifunctional, is mainly a single-screen conference all-in-one machine suitable for small conferences, has few multi-screen conference all-in-one machines for large conferences, is divided into two types according to different conference use scenes, one type is an all-in-one machine in which each display screen can independently play pictures, the other type is an all-in-one machine in which picture splicing and playing are carried out through a plurality of display screens, and the existing multi-screen conference all-in-one machine is low in universality and cannot be simultaneously suitable for two playing modes.

Disclosure of Invention

The application mainly aims to provide a multimedia display for a conference, and aims to solve the technical problems that the existing multi-screen conference integrated machine is low in universality and cannot be suitable for two play modes of multi-screen independent play and multi-screen spliced play.

In order to achieve the above purpose, the application provides a multimedia display for a conference, which comprises a control box, wherein the bottom of the control box is connected with a supporting component, two groups of first display screens and four groups of second display screens are arranged on the outer side of the control box, the two groups of first display screens are oppositely arranged, one group of second display screens are arranged on two sides of each group of first display screens, the first display screens are connected with first telescopic mechanisms fixedly arranged on the side wall of the control box, the second display screens are hinged with second telescopic mechanisms which movably penetrate through the side wall of the control box, movable grooves matched with the second telescopic mechanisms are formed in the side wall of the control box, an adjusting mechanism connected with the second telescopic mechanisms is arranged in the control box and used for driving the second telescopic mechanisms to rotate simultaneously so as to drive the second display screens on two sides of the first display screens to approach or keep away from corresponding first display screens simultaneously.

Optionally, adjustment mechanism includes four sets of swing joint in the drive gear of bottom in the control box, and the equal horizontal connection of second telescopic machanism is in corresponding drive gear top surface, all meshes between two sets of drive gear that correspond with two adjacent sets of second display screens and is connected with two side racks, and two sets of two side racks are connected with drive assembly, and drive assembly is used for driving two sets of two side racks and is close to or keep away from each other.

Optionally, the drive assembly is including setting up in the first servo motor of control box inner wall, and first servo motor is connected with first lead screw, and first lead screw is connected with the second lead screw, and second lead screw other end swing joint is in the control box inner wall, and the screw thread opposite direction of first lead screw and second lead screw, two sets of two side racks are located on first lead screw and the second lead screw respectively in the thread bush, are connected with the guide slide bar that runs through two sets of two side racks of activity between the control box inner wall.

Optionally, the second telescopic machanism includes the first sleeve of horizontal connection in drive gear top surface, is provided with second servo motor in the first sleeve, and second servo motor is connected with the third lead screw, and the thread bush is equipped with first telescopic cylinder on the third lead screw, and first telescopic cylinder activity stretches out first sleeve and is articulated with the second display screen that corresponds, and first telescopic cylinder outer wall is provided with a plurality of first stoppers, and first limit chute with corresponding first stopper sliding fit is seted up to first sleeve inner wall, and first telescopic machanism and second telescopic machanism's structure is the same.

Optionally, the support assembly includes the flexible post of connecting in the control box bottom, and flexible post bottom is connected with the base, and the base bottom is provided with four auto-lock truckles.

Optionally, the flexible post is including connecting the second sleeve on the base, and the bottom is provided with third servo motor in the second sleeve, and third servo motor is connected with the fourth lead screw, and the thread bush is equipped with the flexible section of thick bamboo of second on the fourth lead screw, and the flexible section of thick bamboo activity of second stretches out the second sleeve and connects in the control box bottom, and flexible section of thick bamboo outer wall of second is provided with a plurality of second stoppers, and second limiting chute with corresponding second stopper sliding fit has been seted up to second sleeve inner wall.

Optionally, a controller is disposed on the control box and is electrically connected with the first servo motor, the second servo motor and the third servo motor respectively.

Optionally, the controller is electrically connected with a touch platform disposed on the base.

Optionally, the controller includes:

a central control module;

the servo driving module is electrically connected with the first servo motor, the second servo motor and the third servo motor respectively;

the voice recognition module is used for receiving a voice control instruction of a user, converting the voice control instruction into an electric signal and transmitting the electric signal to the central control module;

and the wireless communication module is used for receiving the control signal of the control terminal and sending the control signal to the central control module.

Optionally, cameras are disposed on the first display screen and the second display screen, and the controller further includes:

the face recognition module is electrically connected with the camera, and is used for collecting face information of a user and storing the face information into the central control module to obtain a face database, and is also used for recognizing face information of a target user and matching the face information of the target user with the face database so as to judge whether the target user has use permission or not;

the video recording module is electrically connected with the camera and used for collecting video information and storing the video information to the central control module.

The beneficial effects that the application can realize are as follows:

the application is provided with two groups of first display screens and four groups of second display screens, six groups of display screens are shared, the use scene of a large conference can be met, wherein, two groups of first display screens can be telescopically regulated under the action of a first telescopic mechanism so as to regulate the watching distance, and other four groups of second display screens can also be telescopically regulated under the action of a corresponding second telescopic mechanism, meanwhile, adjacent second display screens can also be simultaneously close to or far away from the corresponding first display screens under the action of the regulating mechanism, when single-screen independent playing is needed, the two groups of first display screens and the four groups of second display screens are distributed in an annular array at the center of a control box, the meeting personnel can watch the playing content of the display screens around the periphery, when multi-screen spliced playing is needed, the adjacent second display screens are close to the corresponding first display screens through the regulating mechanism, and simultaneously rotate the second display screens to be flush with the first display screens, so that two sides of each group of first display screens are spliced, the large screens formed by three display screens are simultaneously spliced, and finally, two large-screen spliced playing screens are formed, and finally, the two large-screen independent playing screens can be formed, the meeting personnel can watch the content in the two sides, and the conference can be flexibly and simultaneously, the meeting the situation can be regulated, and the meeting the multiple-service condition.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a multimedia display for a conference according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a multimedia display for a conference in a top view (multi-screen independent play) according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a multimedia display for a conference in another state in a top view direction (multi-screen splicing play) according to an embodiment of the present application;

FIG. 4 is a schematic view of an adjusting mechanism according to an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a connection structure between a second telescopic mechanism and a second display screen according to an embodiment of the present application;

FIG. 6 is a schematic view of a telescopic column according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a controller according to an embodiment of the present application.

Reference numerals:

100-control box, 110-movable slot, 200-supporting component, 210-telescopic column, 211-second sleeve, 212-third servo motor, 213-fourth lead screw, 214-second telescopic cylinder, 215-second limiting block, 216-second limiting chute, 220-base, 230-self-locking castor, 300-first display screen, 400-second display screen, 500-first telescopic mechanism, 600-second telescopic mechanism, 610-first sleeve, 620-second servo motor, 630-third lead screw, 640-first telescopic cylinder, 650-first limiting block, 660-first limiting chute, 700-regulating mechanism, 710-driving gear, 720-double-sided rack, 730-driving component, 731-first servo motor, 732-first lead screw, 733-second lead screw, 734-sliding guide bar, 800-controller, 900-touch platform.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indicator is correspondingly changed.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

Examples

Referring to fig. 1-7, the present embodiment provides a multimedia display for a conference, including a control box 100, a supporting component 200 is connected to the bottom of the control box 100, two groups of first display screens 300 and four groups of second display screens 400 are disposed outside the control box 100, the two groups of first display screens 300 are oppositely disposed, two groups of second display screens 400 are disposed on two sides of each group of first display screens 300, the first display screens 300 are connected with a first telescopic mechanism 500 fixedly disposed on the side wall of the control box 100, the second display screens 400 are hinged with a second telescopic mechanism 600 movably penetrating through the side wall of the control box 100, a movable slot 110 matched with the second telescopic mechanism 600 is provided on the side wall of the control box 100, an adjusting mechanism 700 connected with the second telescopic mechanism 600 is disposed in the control box 100, and the adjusting mechanism 700 is used for driving the second telescopic mechanism 600 to rotate simultaneously so as to drive the second display screens 400 on two sides of the first display screens 300 to approach or separate from the corresponding first display screens 300 simultaneously.

In this embodiment, be provided with two sets of first display screens 300 and four second display screens 400, six sets of display screens altogether, can satisfy the service scenario of large-scale meeting, wherein two sets of first display screens 300 all can be under first telescopic machanism 500 effect and stretch out and draw back the regulation, and four sets of second display screens 400 also can be under corresponding second telescopic machanism 600 effect and stretch out and draw back the regulation, simultaneously, adjacent second display screens 400 still can be close to or keep away from corresponding first display screen 300 simultaneously under adjustment machanism 700 effect, when single screen independent play is required, two sets of first display screens 300 and four sets of second display screens 400 are distributed in annular array with control box 100 center, the meeting personnel all can watch the display screen broadcast content around all around, when the play of many screen concatenation is required, make adjacent second display screen 400 be close to corresponding first display screen 300 through adjustment machanism 700, simultaneously rotate second display screen 400 make it flush with first display screen 300, thereby make each set of second display screen 400 of both sides all splice under corresponding second display screen 300, in order to form the independent play screen, can form the multiple-play screen can form the multiple-play scene according to the condition of the regulation, the meeting wide-scale meeting broadcast content is formed, the flexible play screen can be carried out simultaneously, the multiple-play screen can be adjusted, the meeting broadcast condition is realized, and the meeting can be played, and the meeting broadcast, and the meeting is convenient.

It should be noted that, in this embodiment, 6 groups of display screens are set, because when the device is used for a large conference room where a ring is sitting, if only 2-4 groups of display screens are used, it is difficult for all viewers to see the content played by the display screens, and meanwhile, in consideration of control factors and cost factors, too many display screens are not suitable to be set, so that setting 6 groups of display screens is more suitable; a damping hinge may be used between the second display 400 and the second telescopic mechanism 600, and the second display 400 may remain motionless under the action of no external force after rotating about its hinge point.

As an alternative embodiment, the adjusting mechanism 700 includes four sets of driving gears 710 movably connected to the bottom of the control box 100, the second telescopic mechanisms 600 are horizontally connected to the top surfaces of the corresponding driving gears 710, two sets of driving gears 710 corresponding to two adjacent sets of second display screens 400 are respectively connected with two double-sided racks 720 in a meshed manner, the two sets of double-sided racks 720 are connected with a driving assembly 730, and the driving assembly 730 is used for driving the two sets of double-sided racks 720 to approach or separate from each other.

In this embodiment, during adjustment, if a multi-screen spliced playing mode is required, the driving assembly 730 drives the two groups of double-sided racks 720 to separate from each other, so as to simultaneously drive the corresponding adjacent two groups of driving gears 710 to rotate outwards, so that the adjacent second telescopic mechanism 600 and the corresponding second display screen 400 synchronously rotate to be close to the first display screen 300, and after rotation, the second display screen 400 is manually finely tuned and rotated to a surface flush with the first display screen 300 around the hinge point, and similarly, when the multi-screen independent playing mode is required, the driving assembly 730 drives the two groups of double-sided racks 720 to approach each other, so that the display structure design of the embodiment is ingenious, synchronous control over the four groups of second display screens 400 is realized, and the adjustment is favorable for cooperative control, so that the display screens can be smoothly spliced or regularly spread to be distributed in an annular array, and are suitable for various use scenes.

It should be noted that, since the revolution center of the second display screen 400 is the center of the corresponding driving gear 710, and is not the center of the control box 100, after the second display screen 400 revolves around and is finely tuned to a plane parallel to the first display screen 300, the second display screen 400 has a certain drop with the first display screen 300 and is not in a plane, so that the first telescopic mechanism 500 and the second telescopic mechanism 600 are not only used for adjusting the viewing interval, but also used for performing telescopic fine tuning on the corresponding display screen through the first telescopic mechanism 500 or the second telescopic mechanism 600 after the second display screen 400 is turned during multi-screen spliced playing, so that the first display screen 300 and the second display screen 400 can be flush.

As an alternative embodiment, the driving assembly 730 includes a first servo motor 731 disposed on an inner wall of the control box 100, the first servo motor 731 is connected with a first screw 732, the first screw 732 is connected with a second screw 733 (through a coupling), the other end of the second screw 733 is movably connected to the inner wall of the control box 100 (through a ball bearing), the threads of the first screw 732 and the second screw 733 are opposite, two groups of double-sided racks 720 are respectively sleeved on the first screw 732 and the second screw 733, and a guide rod 734 that movably penetrates through the two groups of double-sided racks 720 is connected between the inner walls of the control box 100.

In this embodiment, when the driving assembly 730 operates, the first servo motor 731 is started to drive the first screw 732 and the second screw 733 to rotate simultaneously, and because the screw directions of the first screw 732 and the second screw 733 are opposite, and the two groups of double-sided racks 720 do linear motion towards the direction approaching or separating from each other under the limit action of the slide guiding rod 734, the forward and reverse rotation of the first servo motor 731 is only controlled by utilizing the screw transmission principle, so that the two groups of double-sided racks 720 can be automatically controlled to do opposite motion or reverse motion, the synchronism is good, the deviation is low, and the use requirement is met.

As an alternative embodiment, the second telescopic mechanism 600 includes a first sleeve 610 horizontally connected to the top surface of the driving gear 710, a second servo motor 620 is disposed in the first sleeve 610, the second servo motor 620 is connected with a third screw rod 630, a first telescopic tube 640 is sleeved on the third screw rod 630 in a threaded manner, the first telescopic tube 640 movably extends out of the first sleeve 610 and is hinged to the corresponding second display screen 400, a plurality of first limiting blocks 650 are disposed on the outer wall of the first telescopic tube 640, a first limiting chute 660 in sliding fit with the corresponding first limiting block 650 is disposed on the inner wall of the first sleeve 610, the first telescopic mechanism 500 and the second telescopic mechanism 600 have the same structure, a first sleeve 610 part in the first telescopic mechanism 500 is fixedly disposed on the side wall of the control box 100, and a first telescopic tube 640 part in the first telescopic mechanism 500 is connected with the first display screen 300.

In this embodiment, when the second telescopic mechanism 600 performs telescopic adjustment, the second servo motor 620 drives the third screw rod 630 to rotate, the first telescopic cylinder 640 cannot rotate under the limiting action of the first limiting block 650 and the first limiting chute 660, so that the rotary motion of the third screw rod 630 is converted into the linear motion of the first telescopic cylinder 640, and meanwhile, the first limiting block 650 slides along the first limiting chute 660, thereby realizing automatic telescopic action, having high automation degree and being convenient for accurately adjusting the telescopic amount.

In other embodiments, the first telescopic mechanism 500 and the second telescopic mechanism 600 may be any one of an electric push rod, a telescopic cylinder, a telescopic hydraulic cylinder, or an electric cylinder.

As an alternative embodiment, the support assembly 200 includes a telescopic column 210 connected to the bottom of the control box 100, a base 220 is connected to the bottom of the telescopic column 210, and four self-locking casters 230 are provided at the bottom of the base 220.

In this embodiment, the height of the control box 100 can be adjusted by the telescopic column 210, so as to adjust the height position of the display screen, so as to improve the adaptability of different use environments, and the display can be conveniently moved integrally by the self-locking caster 230.

As an alternative embodiment, the telescopic column 210 includes a second sleeve 211 connected to the base 220, a third servo motor 212 is disposed at the inner bottom of the second sleeve 211, a fourth screw 213 is connected to the third servo motor 212, a second telescopic tube 214 is sleeved on the fourth screw 213 in a threaded manner, the second telescopic tube 214 movably extends out of the second sleeve 211 and is connected to the bottom of the control box 100, a plurality of second limiting blocks 215 are disposed on the outer wall of the second telescopic tube 214, and a second limiting chute 216 in sliding fit with the corresponding second limiting block 215 is disposed on the inner wall of the second sleeve 211.

In this embodiment, similarly, when the telescopic column 210 is telescopically adjusted, the third servo motor 212 drives the fourth screw rod 213 to rotate, so as to drive the second telescopic tube 214 to extend into or out of the second sleeve 211, thereby realizing automatic adjustment of the height of the control box 100, and facilitating control.

As an alternative embodiment, the controller 800 is disposed on the control box 100, and the controller 800 is electrically connected to the first servomotor 731, the second servomotor 620, and the third servomotor 212, respectively. The operations of the first, second and third servomotors 731, 620 and 212, respectively, can be controlled by the controller 800, thereby performing various automatic control adjustments, respectively.

As an alternative embodiment, the adjacent positions of the side ends of the first display screen 300 and the second display screen 400 are respectively provided with an inductive switch, the inductive switches are electrically connected with the controller 800, when the second display screen 400 rotates and adjusts, the second display screen 400 is detected not to be flush with the first display screen 300, at this time, the controller 800 controls the corresponding second servo motor 620 to start, so that the corresponding first telescopic mechanism 500 and the corresponding second telescopic mechanism 600 are automatically telescopic until the first display screen 300 and the second display screen 400 are flush, at this time, the adjacent inductive switches are mutually inductive, and the second servo motor 620 stops running, thereby realizing the function of automatically correcting and flushing the first display screen 300 and the second display screen 400.

As an alternative embodiment, the controller 800 is electrically connected to the touch platform 900 disposed on the base 220, and can perform control operation through the touch platform 900, and perform a series of operations according to the interface prompt information, so as to adjust the position state of the display screen, and facilitate the operation.

As an alternative embodiment, the controller 800 includes:

a central control module;

the servo driving module is electrically connected with the first servo motor 731, the second servo motor 620 and the third servo motor 212 respectively;

In this embodiment, the voice recognition module may receive a voice control instruction of a user, and the central control module sends a control signal to the servo driving module according to the voice control instruction to control the corresponding first servo motor 731, second servo motor 620 or third servo motor 212 to be started, so that the user may control the height adjustment, rotation adjustment, etc. of the display screen through voice, so that the use is more intelligent; or, the control signal of the control terminal (such as a remote controller or a mobile phone end) is received through the wire communication module, and intelligent control can be performed.

It should be noted that, the voice recognition module is a module based on the existing voice recognition technology, and mainly includes a voice recognition chip and some other accessory circuits, so that the voice recognition module can be conveniently communicated with the main control chip, a developer can conveniently embed the module into own products to use the module, so as to achieve the purpose of voice interaction, keywords such as "raise, lower, independent play mode and multi-screen splicing mode" can be preset in advance, when a voice instruction of "raise" or "lower" is sent out, the third servo motor 212 operates to automatically adjust the height, and when an "independent play mode" or "multi-screen splicing mode" is sent out, the first servo motor 731 and the second servo motor 620 operate to automatically adjust the position state of the display screen respectively, so as to realize intelligent voice control, and improve the user experience; the wireless communication module may be at least one of a bluetooth module, a WIFI module, a ZigBee module, or a 433M wireless module, where each module is in the prior art, and is not described herein.

As an alternative embodiment, the first display 300 and the second display 400 are both provided with cameras, and the controller 800 further includes:

In the embodiment, the face recognition module can store the face information of the user to the central control module in advance, the user is the user with the use authority, and the user can start up for use only by carrying out face verification through the camera when using next time, so that the situation that a person without the use authority starts up at will is avoided, information leakage is prevented, and the information security can be improved; the video recording module can record videos of current participants through the camera, so that follow-up retrieval of recorded videos is facilitated, and checking and other operations are performed.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. The utility model provides a multimedia display for meeting, its characterized in that includes the control box, the control box bottom is connected with supporting component, the control box outside is provided with two sets of first display screens and four sets of second display screens, two sets of first display screens are relative arrangement, every set of first display screen both sides all arrange a set of second display screen, first display screen all be connected with the fixed first telescopic machanism that sets up in the control box lateral wall, the second display screen all articulate have the activity run through the second telescopic machanism of control box lateral wall, the control box lateral wall seted up with second telescopic machanism complex movable groove, be provided with in the control box with the adjustment mechanism that second telescopic machanism is connected, adjustment mechanism is used for driving the second telescopic machanism rotates simultaneously, so as to drive the second display screen of first display screen both sides is close to or keep away from simultaneously corresponding first display screen;

the adjusting mechanism comprises four groups of driving gears which are movably connected to the bottom in the control box, the second telescopic mechanisms are horizontally connected to the top surfaces of the corresponding driving gears, two groups of driving gears corresponding to the second display screens are connected with double-sided racks in a meshed mode, the two groups of double-sided racks are connected with driving assemblies, and the driving assemblies are used for driving the two groups of double-sided racks to be close to or far away from each other.

2. The multimedia display for a conference according to claim 1, wherein the driving assembly comprises a first servo motor arranged on the inner wall of the control box, the first servo motor is connected with a first screw rod, the first screw rod is connected with a second screw rod, the other end of the second screw rod is movably connected with the inner wall of the control box, the screw thread directions of the first screw rod and the second screw rod are opposite, two groups of double-sided racks are respectively sleeved on the first screw rod and the second screw rod in a screw thread mode, and a guide rod which movably penetrates through the two groups of double-sided racks is connected between the inner wall of the control box.

3. The multimedia display for a conference according to claim 2, wherein the second telescopic mechanism comprises a first sleeve horizontally connected to the top surface of the driving gear, a second servo motor is arranged in the first sleeve, the second servo motor is connected with a third screw rod, a first telescopic cylinder is sleeved on the third screw rod in a threaded manner, the first telescopic cylinder movably stretches out of the first sleeve and is hinged with a corresponding second display screen, a plurality of first limiting blocks are arranged on the outer wall of the first telescopic cylinder, a first limiting chute in sliding fit with the corresponding first limiting block is formed in the inner wall of the first sleeve, and the first telescopic mechanism and the second telescopic mechanism are identical in structure.

4. A conference multimedia display as claimed in claim 3, wherein the support assembly comprises a telescopic column connected to the bottom of the control box, the bottom of the telescopic column is connected with a base, and four self-locking casters are arranged at the bottom of the base.

5. The multimedia display for a conference according to claim 4, wherein the telescopic column comprises a second sleeve connected to the base, a third servo motor is arranged at the inner bottom of the second sleeve, a fourth screw rod is connected to the third servo motor, a second telescopic cylinder is sleeved on the fourth screw rod in a threaded manner, the second telescopic cylinder movably extends out of the second sleeve and is connected to the bottom of the control box, a plurality of second limiting blocks are arranged on the outer wall of the second telescopic cylinder, and second limiting sliding grooves in sliding fit with the corresponding second limiting blocks are formed in the inner wall of the second sleeve.

6. The multimedia display for a conference according to claim 5, wherein a controller is provided on the control box, and the controller is electrically connected to the first servo motor, the second servo motor, and the third servo motor, respectively.

7. The multimedia display for a conference of claim 6, wherein the controller is electrically connected to a touch platform disposed on the base.

8. A multimedia display for a conference as claimed in claim 6, wherein said controller comprises:

a central control module;

the voice recognition module is used for receiving a voice control instruction of a user, converting the voice control instruction into an electric signal and sending the electric signal to the central control module;

9. The multimedia display for a conference of claim 8, wherein cameras are disposed on the first display screen and the second display screen, and wherein the controller further comprises:

the face recognition module is electrically connected with the camera, and is used for collecting face information of a user and storing the face information into the central control module so as to obtain a face database, and is also used for recognizing face information of a target user and matching the face information of the target user with the face database so as to judge whether the target user has use permission or not;

the video recording module is electrically connected with the camera, and is used for collecting video information and storing the video information to the central control module.