CN210348848U

CN210348848U - Top-mounted multimedia control system

Info

Publication number: CN210348848U
Application number: CN201920525511.3U
Authority: CN
Inventors: 姚欣
Original assignee: Hangzhou Maijie Education Technology Co ltd
Current assignee: Hangzhou Maijie Education Technology Co ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-04-17
Anticipated expiration: 2029-04-17

Abstract

The utility model discloses a top-mounted multimedia control system, which comprises a projector, a projector bracket, a sound box and a central control system, wherein the central control system comprises a computer host module, a multimedia audio and video control module, a network control module and a power management module; the computer host module, the multimedia audio and video control module, the network control module and the power management module are arranged in a centralized manner and are arranged above the teaching board together with the projector bracket, and the sound box is connected with the central control system. The multimedia control system has the advantages that all the components of the central control system are arranged in a centralized mode and integrated into a whole, the size of the central control system is reduced, the central control system and the projector support are arranged above the teaching board together, the vacant position above the teaching board is effectively utilized, the size and the occupied area of the whole multimedia control system are reduced, the length of a cable is shortened, the construction cost is reduced, the using area of the teaching board cannot be occupied, the structure is simple, and the installation is convenient.

Description

Top-mounted multimedia control system

Technical Field

The utility model relates to a teaching decoration technical field especially relates to put top formula multimedia control system.

Background

Along with the development of economy and social progress, the teaching intelligence of schools is gradually realized, various electric appliances are also gradually applied to teaching activities, and various multimedia devices are also appeared in classrooms, including projectors, teaching white boards, sound box devices, network central control modules and the like. Existing multimedia control systems are generally installed in a platform, such as the following patents: the device in the multimedia teaching device (patent number: CN201420506680. X), the projector in the patent also needs to hang a curtain; or both sides of a teaching whiteboard, such as patent: multimedia wall hanging teaching equipment and a multimedia teaching system (CN 201620896852.8). If the multimedia control system is arranged in the platform, the multimedia system is not movable due to the intervention of wires in the platform, and the safety problem may occur after the cover plate is opened. If the wall-mounted multimedia control system is arranged, the use area of the teaching whiteboard is occupied.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model aims to provide an put top formula multimedia control system, multimedia control system's most is constituteed and is set up in the top of board is used in the teaching, realizes integrating, reduces whole multimedia control system's volume and area, shortens cable length, reduces construction cost, can not occupy the usable floor area of board is used in the teaching, simple structure, simple to operate.

The purpose of the utility model is realized by adopting the following technical scheme:

a top-mounted multimedia control system comprises a projector, a projector bracket, a sound box and a central control system, wherein the central control system comprises a computer host module, a multimedia audio and video control module, a network control module and a power management module; the computer host module, the multimedia audio and video control module, the network control module and the power management module are arranged in a centralized manner, and are arranged above the teaching board together with the projector bracket, and the sound box is connected with the central control system.

Furthermore, the central control system comprises a control box, the control box is connected with the computer host module and the multimedia audio/video control module, and the control box is arranged on the side edge of the teaching board.

Furthermore, the sound box is arranged above the teaching board and connected with the projector support, the sound box comprises a left sound box, a right sound box and an equipment box, the left sound box and the right sound box are boxes with loudspeakers, the equipment box is a box with a circuit board, the power management module is arranged in the equipment box, the length and the width of the equipment box are matched with those of the circuit board, and the equipment box is fixedly connected with the left sound box and the right sound box through an assembly structure and an electric connection structure.

Further, the equipment box includes casing and panel, the circuit board with power management module set up in the casing, be equipped with the screens strip on the inner wall of panel, the striding is equipped with the panel mounting on the casing, on the panel mounting with the position that the screens strip corresponds is equipped with the screens groove, the screens strip with screens groove joint is in order to incite somebody to action the panel is fixed on the casing.

Furthermore, the projector bracket comprises a bracket main body, an equipment mounting bracket is arranged on the bracket main body, and the equipment mounting bracket is fixedly connected with the bracket main body; be equipped with decorative structure in the support main part, decorative structure includes the shroud, the shroud cover is established in the support main part, the shroud includes the cavity, the support main part with the equipment fixing support is located in the cavity, the computer host module multimedia audio video control module with one or more in the network control module set up in the equipment fixing support.

Furthermore, the bracket main body also comprises a bracket pipe and a bracket fixing seat, a longitudinal adjusting assembly and a transverse adjusting assembly are connected between the bracket fixing seat and the bracket pipe, and the bracket fixing seat comprises a movable space for accommodating the longitudinal adjusting assembly and the transverse adjusting assembly; the longitudinal adjusting assembly is movably connected with the transverse adjusting assembly, and one of the longitudinal adjusting assembly and the transverse adjusting assembly is connected with the bracket fixing seat; the bracket pipe is fixedly connected with the longitudinal adjusting assembly and/or the transverse adjusting assembly, penetrates out of the bracket fixing seat and is connected with the projector.

Further, the support tube comprises a support outer tube, and the equipment mounting support is arranged on the support outer tube; the shroud is in including covering base on the support fixing base, cover decoration lid on the support outer tube, the equipment fixing support sets up decoration lid with between the support outer tube, decoration lid includes arc top surface and opening, the opening sets up the least significant end of arc top surface.

Further, the support tube comprises a support inner tube movably connected with the support outer tube, the decoration structure comprises a decoration front cover fixedly connected with the support inner tube, and the decoration front cover moves relative to the cover cap along with the support inner tube.

Furthermore, the decorative front cover comprises a side shielding part and a top mounting part, the side shielding part is covered on the outer side of the bracket outer tube and is fixedly connected with the bracket inner tube through the top mounting part, and a gap is formed between the side shielding part and the bracket inner tube and used for accommodating the bracket outer tube; and two sides of the equipment mounting bracket are provided with inwards concave grooves which are matched with the side shielding parts.

Furthermore, the control system also comprises a network synchronous clock, wherein the network synchronous clock is arranged on the bracket main body or the decorative structure and comprises a clock circuit and a display screen, the display screen is connected with the clock circuit, and the clock circuit comprises a network automatic calibration circuit.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses concentrate each part of center control system and set up, fuse into a whole, reduce center control system's volume, set up center control system and projector support in the top of board is used in the teaching together simultaneously, effectively utilize the vacant position of board top in the teaching, reduce whole multimedia control system's volume and area, shorten cable length, reduce construction cost, can not occupy the area of board is used in the teaching, simple structure, simple to operate.

Drawings

Fig. 1 is a schematic structural diagram of a top multimedia control system according to an embodiment of the present invention, which shows a schematic installation state of each component of the control system including a projector;

fig. 2 is an exploded schematic view of a top multimedia control system according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a sound box according to an embodiment of the present invention;

fig. 4 is a schematic view of a connection structure of a speaker panel according to an embodiment of the present invention;

fig. 5 is a schematic view of a connection state structure between a speaker panel and a housing according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the equipment mounting bracket and the bracket main body according to the embodiment of the present invention;

fig. 7 is a schematic structural view of the equipment mounting bracket according to another angle of the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a bracket main body, a decoration structure and a network synchronous clock according to an embodiment of the present invention;

fig. 9 is a schematic structural view of another angle between the decorative front cover and the bracket body according to the embodiment of the present invention;

fig. 10 is a schematic structural view of a bracket main body according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a transverse adjusting assembly, a longitudinal adjusting assembly and a support tube according to an embodiment of the present invention;

fig. 12 is an exploded view of the lateral adjustment assembly, the longitudinal adjustment assembly, and the support tube according to an embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of a main body of a bracket according to an embodiment of the present invention;

fig. 14 is an exploded view of the decorative front cover according to the embodiment of the present invention.

In the figure:

100. a projector; 200. a projector mount; 210. a bracket fixing seat; 211. extending the long side; 212. mounting holes; 213. an activity space; 214. a through groove; 220. a stent outer tube; 221. a guide groove; 222. a chute; 230. a stent inner tube; 231. a guide groove; 232. adjusting a knob; 240. a projector mount; 250. a longitudinal adjustment assembly; 251. a longitudinal adjustment groove; 252. a longitudinal adjustment seat; 253. a longitudinal adjusting rod; 254. a slot nut; 255. an inner cavity; 256. a boss; 257. locking the nut; 260. a lateral adjustment assembly; 261. a lateral adjustment groove; 262. a transverse adjusting rod; 263. a transverse adjusting seat; 264. a locking member; 265. a nut slot; 300. a sound box; 310. mounting grooves; 320. a left speaker; 321. an extension stage; 322. positioning a groove; 330. a right speaker; 340. an equipment box; 341. a circuit board; 342. a housing; 343. a panel securing member; 344. a clamping groove; 345. a spring plate; 346. flanging; 347. a clamping part; 348. shielding the edge; 350. a panel; 351. a clamping strip; 352. a notch; 353. bending the edges; 360. assembling the structure; 361. a positioning column; 362. positioning holes; 363. an extension edge; 364. a first locking screw; 365. a second locking screw; 400. a central control system; 410. a control box; 411. a control knob; 412. a user identification module; 420. a power management module; 430. a computer host module; 440. a network control module; 450. an interface; 460. a network synchronization clock; 461. a clock circuit; 462. a display screen; 463. an hour adjustment button; 464. a minute adjustment button; 500. a teaching board; 600. an equipment mounting bracket; 610. accommodating grooves; 611. a bottom layer; 612. an upper layer; 620. a clamping block; 630. mounting a plate; 640. a groove; 700. a decorative structure; 710. a cover; 711. a cavity; 712. a base; 713. a decorative cover; 714. an arc-shaped top surface; 715. an opening; 716. decorating the bottom plate; 717. a card slot; 718. buckling; 720. decorating the front cover; 721. a side shielding part; 722. a top mounting portion; 723. a void; 724. a guide rib; 725. a window; 730. a front cover plate; 731. an installation position; 732. a housing; 733. closing the plate; 734. sealing the cover; 735. a concave cavity; 736. and (5) fixing the column.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 to 14, the top multimedia control system according to the embodiment of the present invention will be clarified in the following description, wherein the projector bracket integrates the central control system, reducing the overall size of the multimedia control system, avoiding occupying the use area of the teaching board, shortening the length of the connecting cable, and beautifying the classroom environment.

As shown in fig. 1 and fig. 2, the top-mounted multimedia control system of the present embodiment includes a projector 100, a projector support 200, a sound box 300 and a central control system 400, where the central control system 400 includes a computer host module 430, a multimedia audio/video control module, a network control module 440 and a power management module 420; the computer host module 430, the multimedia audio/video control module, the network control module 440 and the power management module 420 are arranged in a centralized manner, and are arranged above the teaching board 500 together with the projector support 200, and the sound box 300 is connected with the central control system 400. The teaching board 500 of this embodiment may be an intelligent whiteboard, a common whiteboard, a blackboard, or an intelligent touch screen board, and if the teaching board is a blackboard, the projector 100 further includes a curtain, the curtain is also disposed above the teaching board 500, the curtain of the projector 100 is of an existing structure, and belongs to common knowledge, and details thereof are not repeated herein; if the white board is a common white board, the white board can be used as a curtain of the projector 100, and then the user operates the central control system 400 and displays the white board on the common white board through the projector 100; in the case of the intelligent whiteboard or the intelligent touch panel, the teaching board 500 is connected to the central control system 400 to be a part of the multimedia control system, and a user can directly operate the teaching board 500.

In addition, as shown in fig. 1, for the convenience of user operation, the central control system 400 includes a control box 410, the control box 410 is connected with a host computer module 430 and a multimedia audio/video control module, the control box 410 is disposed at the lower portion of the side edge of the teaching board 500, the control box 410 can also be made into a movable structure, such as an intelligent remote control structure, and the user can perform some operations, such as page switching and volume adjustment, on the central control system 400 through the control box 410. Therefore, the control box 410 is also provided with a control knob 411. In addition, in order to avoid the careless operation of the multimedia control system by an unrelated person, a user identification module 412 may be further disposed on the control box 410, the user identification module 412 may be in a card reading identification mode, a biometric identification mode, a user password login identification mode, and the like, and a user may start the central control system 400 and the control box 410 by inserting a card, scanning a face, recognizing a fingerprint, or directly inputting a login password, and the like.

The speaker 300 is also an essential part of the multimedia control system, and may be disposed on the left and right sides or below the teaching board 500, or may be independently disposed in a classroom, as long as it communicates with the central control system 400 and sounds. In order to further reduce the volume of the entire multimedia control system and centralize the same, the speaker 300 of the present embodiment is disposed above the teaching board 500 and connected to the projector mount 200. The connection structure of audio amplifier 300 and projector support 200 is shown in fig. 2, projector support 200 includes the support main part, the support main part includes support fixing base 210 and support pipe, projector support 200 and projector 100 pass through support fixing base 210 and wall fixed connection, the upper surface of the middle section of audio amplifier 300 is equipped with mounting groove 310, the shape and the support fixing base 210 looks adaptation of mounting groove 310, insert the lower extreme of support fixing base 210 in mounting groove 310 and fixed support fixing base 210 and audio amplifier 300, thereby combine projector support 200 and audio amplifier 300, and fix in the top of board 500 for teaching, audio amplifier 300 still can pass through screw fixed connection with the wall, make audio amplifier 300 installation more stable firm.

As shown in fig. 2 to 5, the sound box 300 of the present embodiment is a strip-shaped structure, and includes a left sound box 320, a right sound box and an equipment box 340, the left sound box 320 and the right sound box 330 are boxes with speakers, the equipment box 340 is a box with a circuit board 341, the power management module 420 is disposed in the equipment box 340, at this time, the equipment box 340 is close to the projector bracket 200, the power management module 420 can be connected to other parts in the central control system 400 through a short cable, so as to avoid the disorder of wiring caused by too many too long cables. The device box 340 is fixed to the left speaker 320 and the right speaker 330 by the mounting structure 360 and the electrical connection structure. In order to realize the expansion function of the multimedia control system of the embodiment, the left speaker 320, the right speaker and the equipment box 340 of the embodiment are separately arranged as independent boxes, and the length and the width of the equipment box 340 are matched with those of the circuit board 341, so that the problem that the conventional integrated speaker 300 is inconvenient to modify the size is solved, the production efficiency is improved, and the cost is saved. The length and width of the equipment box 340 are customized according to the length and width of the circuit board 341, and a required expansion function can be added in a processing link to customize the size of the equipment box 340.

More specifically, the device box 340 is disposed between the left speaker 320 and the right speaker 330, and then the mechanical connection between the left speaker 320 and the device box 340 is achieved through the assembly structure 360, and the electrical connection between the left speaker 320 and the right speaker 340 is achieved through the electrical connection structure, the electrical connection structure in this embodiment is an electrical wire (not shown), the left speaker 320 and the right speaker 330 may both be connected to the device box 340 through an electrical wire, a main speaker 300 may be disposed in the left speaker 320 and the right speaker 330, the main speaker 300 is connected to the device box 340 through an electrical wire, and then the main speaker 300 is connected to another speaker 300 through wireless transmission, the transmission mode may be 900MHz radio technology, which is the prior art, is common in the field of sound technology, and is not described herein again. The side of the main sound box 300 is provided with a through hole through which the power supply line passes, and the corresponding position of the equipment box 340 is also provided with a hole through which the power supply line passes.

There are various connection modes for the left sound box 320 and the right sound box 330 with the equipment box 340, and in order to achieve fast assembly, the assembly structure 360 of this embodiment includes a pre-positioning structure, more specifically, the assembly structure 360 includes a positioning column 361 and a positioning hole 362, one of the positioning column 361 and the positioning hole 362 is disposed on the side of the equipment box 340 facing the left sound box 320 and the right sound box 330, and the other is correspondingly disposed on the corresponding position of the left sound box 320 and the right sound box 330. After the equipment box 340 is finished, the left sound box 320, the right sound box and the equipment box 340 need to be assembled together, and for the overall coordination and the beauty of the sound box 300, the length and the width of the equipment box 340 are cut according to the circuit board 341 in a customized manner, and the height of the equipment box is consistent with the height of the left sound box 320 and the height of the right sound box 330. As shown in fig. 3, the positioning columns 361 are disposed on the left and right sides of the equipment cabinet 340, correspondingly, the positioning holes 362 are disposed at corresponding positions on the sides of the left sound box 320 and the right sound box 330, the positioning columns 361 are adapted to the positioning holes 362, the number of the positioning columns 361 can be 1, 2, 3 or more, and the positions of the positioning columns 361 and the positioning holes 362 are also within the scope of the present invention. In another pre-positioning manner, the assembly structure 360 includes an extension side 363, and the extension side 363 is disposed on the lower end surface of the equipment box 340, extends to the bottom surfaces of the left sound box 320 and the right sound box 330, and abuts against the bottom surfaces of the left sound box 320 and the right sound box 330. During installation, the left speaker 320 or the right speaker 330 can be placed on the extending edge 363, and then the left speaker 320 or the right speaker 330 can be moved close to the equipment box 340 until the positioning column 361 is inserted into the positioning hole 362, the pre-assembly is completed, and then the fixing is performed. The assembling structure 360 includes a first locking screw 364 and a second locking screw 365, the first locking screw 364 is disposed on one side of the positioning column 361, the second locking screw 365 is disposed on the extending side 363, after the pre-assembling is completed, the first locking screw 364 is used to lock the side surfaces of the left and right sound boxes and the equipment box 340, and the second locking screw 365 is used to lock the extending side 363 and the bottom surfaces of the left and right sound boxes.

The equipment box 340 is made of metal plate materials and comprises a shell 342 and a panel 350, the circuit board 341 is arranged in the shell 342, and a screw hole of a first locking screw 364 is located in the shell 342, so that when the equipment box is assembled, a left sound box, a right sound box and the equipment box 340 are fixedly connected, and then the panel 350 is covered.

Because the equipment box 340 is provided with the circuit boards 341 and the interfaces, in order to facilitate connection and maintenance, the panel 350 of this embodiment is a detachable panel 350, and the structure mainly embodied between the panel 350 and the casing 342 is an elastic clamping structure, more specifically, the inner wall of the panel 350 is provided with the clamping strip 351, the casing 342 is provided with the panel fixing member 343 in a spanning manner, the panel fixing member 343 is provided with two ends of the casing 342 of the equipment box 340, is close to the left sound box 320 and the right sound box 330, and is provided on the casing 342 in a spanning manner, so as to avoid interference with the circuit board 341 and the connector inside the equipment box 340, the position on the panel fixing member 343 corresponding to the clamping strip 351 is provided with the clamping groove 344, and the clamping strip 351 is clamped with the clamping groove 344 to fix the panel 350. Screens strip 351 and/or screens groove 344 can take place the elastic deformation of certain extent, screens strip 351 and screens groove 344 elastic clamping in order to fix panel 350.

When the panel 350 is installed, the clamping strip 351 on the inner wall of the panel 350 is embedded into the clamping groove 344, so that the panel 350 is fixed with the shell 342; when panel 350 is required to be removed, panel 350 is held and pulled outward forcibly to separate detent strip 351 and detent groove 344, thereby removing panel 350. The clamping strip 351 is arranged on the inner wall of the panel 350 and cannot be exposed out of the surface of the panel 350, so that the integrity of the panel 350 is ensured, and the surface of the panel 350 is more attractive.

In order to realize the elastic matching of the locking strip 351 and the locking groove 344, one or both of the locking strip 351 and the locking groove 344 can be elastically deformed to a certain extent, as an embodiment, the locking strip 351 can be made of an inelastic deformation material, and the locking groove 344 is made of an elastic deformation material, as shown in the attached drawings, the connecting member includes two symmetrically arranged elastic sheets 345, and a certain distance is provided between the two elastic sheets 345 to form the locking groove 344. Meanwhile, in order to facilitate the clamping of the clamping bar 351 into the clamping groove 344, the elastic sheet 345 includes an outward flange 346 and an outward protruding clamping portion 347, the flanges 346 of the two elastic sheets 345 form a guiding portion, the two opposite clamping portions 347 form the clamping groove 344, and a collar-shaped structure is formed, so that the clamping bar 351 is not easy to be disengaged, the clamping bar 351 is adapted to the clamping portion 347 in shape, and preferably, the clamping portion 347 is an outward protruding arc-shaped structure.

As another embodiment, the locking bar 351 may be made of an elastically deformable material, the locking groove 344 may be made of an inelastic material, the locking bar 351 has a hollow structure, and a notch 352 is formed at a side facing the locking groove 344, so that the locking bar 351 is inwardly contracted when being compressed to enter the locking groove 344 and then locked with the locking groove 344, and at this time, the locking groove 344 may have an outwardly extending flange 346 and an outwardly extending locking portion 347 as in the previous embodiment, the two flanges 346 form a guide portion, and the two locking portions 347 form the locking groove 344, thereby forming a collar-like structure to lock the locking bar 351 in the locking groove 344. Preferably, the locking bar 351 has a ring-shaped cross section with an opening 715.

As another embodiment, the locking strips 351 and the locking grooves 344 are made of an elastically deformable material, and the structure is the same as that of the two embodiments. It should be noted that the shape of the locking bar 351 and the locking groove 344 is a diamond or flat structure or other common shapes that can be engaged with the above-mentioned embodiments, and the invention is also covered by the claims.

As shown in fig. 4 and 5, two side edges of the panel 350 of the present embodiment are bent toward the housing 342 to form bent edges 353, and the lower surfaces of the bent edges 353 are abutted against the upper surfaces of the side walls of the housing 342 to prevent dust or water from entering the equipment box 340. Preferably, the shielding edge 348 is disposed at an inner position of the upper surface of the sidewall of the casing 342, and the shielding edge 348 is located at an inner side of the bending edge 353, so as to further prevent dust and water from entering the equipment box 340, and protect the circuit board 341 and the power management module 420 in the equipment box 340. The panel 350 of this embodiment can adopt the sheet metal material to make, cuts according to the length of equipment box 340 and uses, and panel 350 and limit 353 are bent for integrated into one piece, screens strip 351 and panel 350 formula structure as an organic whole.

In addition, as shown in fig. 3, in order to shield the connection between the device box 340 and the left and right sound boxes, the upper portion of one side of the left sound box 320 and the right sound box 330 facing the device box 340 is provided with an extending platform 321, the extending platform 321 is provided with a positioning groove 322, and the positioning strip 351 is correspondingly clamped with the positioning groove 322, so that two sides of the panel 350 cover the connection between the left and right sound boxes and the device box 340, the surface of the sound box 300 is more complete and beautiful, and dust is prevented from directly entering between the left and right sound boxes and the device box 340.

In order to place the central control system 400, a storage space is provided on the projector support 200 of the embodiment, more specifically, an equipment mounting support 600 is provided on the support main body, and the equipment mounting support 600 is fixedly connected with the support main body; one or more of a computer host module 430, a multimedia audio video control module, and a network control module 440 are disposed in the device mounting bracket 600. The projector mounting table 240 is arranged on the support main body, the projector 100 is fixedly connected with the projector mounting table 240, the distance between the projector 100 and each part of the central control system 400 is very short, and the projector 100 and the central control system 400 can be connected only by a short display cable; in addition, the material of the bracket main body and the shape of the cover 710 can be selected to achieve the purpose of dissipating heat from the central control system 400.

More specifically, the equipment mounting bracket 600 of the present embodiment is disposed on a bracket tube, the bracket tube includes a bracket outer tube 220 and a bracket inner tube 230, the cover 710 includes a base 712 covering the bracket holder 210 and a decorative cover 713 covering the bracket outer tube 220, the equipment mounting bracket 600 is disposed between the decorative cover 713 and the bracket outer tube 220, the decorative cover 713 includes an arc top surface 714 and an opening 715, and the opening 715 is disposed at the lowest end of the arc top surface 714. The cover 710 mainly has an arc-shaped top surface 714 and an opening 715 for heat dissipation, the equipment mounting bracket 600 and the central control system 400 are positioned below the arc-shaped top surface 714, heat generated by the central control system 400 rises to the arc-shaped top surface 714 and then is transmitted to the opening 715 along the arc-shaped top surface 714, and the heat is discharged out of the cover 710; due to the structure, the situation that the top end of the cover 710 is directly provided with the vent hole is avoided, dust can easily enter the cavity 711 of the cover 710 directly due to the fact that the vent hole is directly formed in the top end of the cover 710, and long-time dust accumulation can affect the heat dissipation function of the central control system 400; the present embodiment utilizes the arc top surface 714 to guide heat to the outlet, which not only effectively realizes heat dissipation of the central control system 400, but also effectively prevents dust from entering the cavity 711.

The cover 710 may be fixedly connected to the bracket fixing base 210 or a wall surface around the bracket outer tube 220, and may be connected to the bracket outer tube 220, a decorative bottom plate 716 is disposed at the bottom of the bracket outer tube 220, and the cover 710 is fastened to the decorative bottom plate 716 to fix the cover 710, and the cover 710 is detachable, so that the bracket main body or the central control system 400 in the cover 710 may be conveniently adjusted. More specifically, as shown in fig. 2, decorative bottom plates 716 are disposed on two sides of the outer tube 220, the decorative bottom plates 716 may be welded or screwed to the outer tube 220, the decorative bottom plates 716 may be an integral structure including two side plates and a middle connecting plate, or may be a split structure including two side plates separately disposed, and the two side plates are respectively and fixedly connected to the outer tube 220. The outer edge of the side plate is provided with at least one clamping groove 717, the lower ends of the two side inner walls of the cover 710 are provided with buckles 718 corresponding to the clamping grooves 717, and the buckles 718 are clamped into the clamping grooves 717 to fix the cover 710.

As shown in fig. 6, the equipment mounting bracket 600 of this embodiment includes a receiving groove 610, the receiving groove 610 includes a two-layer structure, a bottom layer 611 of the equipment mounting bracket 600 is a box-shaped structure, one side of the box-shaped structure is not provided with a shield, an expansion device can be placed, and a socket 450 of the expansion device placed on the layer faces the side not provided with the shield, so as to facilitate plugging of a cable; the upper layer 612 of the equipment mounting bracket 600 is of a square tube structure, the area of the upper layer 612 is larger than that of the bottom of the equipment mounting bracket, larger expansion equipment can be placed, and the orientation of the socket 450 of the expansion equipment of the upper layer 612 is consistent with that of the lower layer in order to facilitate wiring. The central control system 400 may further include one or more of a wireless pass-screen box, a television box, a wireless router. It should be noted that, in the specific example shown in fig. 6, the receiving groove 610 has a two-layer structure to illustrate the structure of the device mounting bracket 600 of the present embodiment, but the two-layer structure of the receiving groove 610 is not to be considered as limiting the content and scope of the structure of the device mounting bracket 600 of the present embodiment, and the device mounting bracket 600 of the present embodiment may also have one or more layers, and the volume size of the one or more layers is adapted to the size of the cavity 711 of the cover 710.

The connection mode of the equipment mounting bracket 600 and the bracket outer tube 220 can have various structures, in one embodiment, the bracket outer tube 220 comprises a guide groove 221, the guide groove 221 is positioned below the equipment mounting bracket 600, a fixture block 620 is arranged at the bottom of the equipment mounting bracket 600, the fixture block 620 is clamped with the guide groove 221, then the equipment mounting bracket 600 is limited by the cover 710 to avoid movement, and the connection mode enables the mounting and dismounting of the bracket outer tube 220 and the equipment mounting bracket 600 to be very convenient; in another embodiment, the outer tube 220 of the bracket is a square tube structure with a groove 640; the side of the equipment mounting bracket 600 is provided with a mounting plate 630, and the mounting plate 630 is fixedly coupled to the side of the bracket outer tube 220, more specifically, by aligning screw holes on the side of the mounting plate 630 and the bracket outer tube 220, and screws are passed through the screw holes and fastened to the mounting plate 630 and the bracket outer tube 220, thereby fixing the equipment mounting bracket 600. The equipment mounting bracket 600 and the bracket outer tube 220 of the present embodiment combine the two embodiments to ensure the stability of the equipment mounting bracket 600. It should be noted that the present invention also includes a structure for connecting the device mounting bracket 600 and the bracket outer tube 220 by using any of the above embodiments alone.

The stent main body comprises a stent inner tube 230 movably connected with a stent outer tube 220, the stent outer tube 220 of the embodiment is hollow, sliding grooves 222 are arranged on the inner walls of two sides, and the stent inner tube 230 is embedded in the sliding grooves 222 and movably connected with the stent outer tube 220; when the distance between the projector 100 and the wall surface needs to be adjusted, the bracket inner tube 230 is pushed or pulled, and the problem caused by the exposure of the bracket inner tube 230 is solved by the decoration structure 700. After the inner bracket tube 230 moves outwards from the inner bracket tube 220, the inner bracket tube 230 is exposed outside, which not only affects the overall aesthetic appearance of the projector bracket 200, but also may cause dust to enter the inner bracket tube 230, so the decoration structure 700 includes a decoration front cover 720 fixedly connected with the inner bracket tube 230, and the decoration front cover 720 moves along with the inner bracket tube 230 relative to the fixed cover 710. The side shielding portion 721 of the front decorative cover 720 solves the problem of the aesthetic property of the inner tube 230 of the bracket, maintains the consistency of the outer tube of the projector bracket 200, and may further include a top shielding portion (not shown) to shield the inner tube 230 of the bracket by using a foldable shielding structure, thereby improving the sealing property of the inner tube 230 of the bracket and preventing dust from entering the inner tube 230 of the bracket. As shown in the drawings, the decorative front cover 720 further includes a top mounting portion 722, a side shielding portion 721 covers the outer side of the stent outer tube 220 and is fixedly connected with the stent inner tube 230 through the top mounting portion 722, and a gap 723 is provided between the side shielding portion 721 and the stent inner tube 230 for accommodating the stent outer tube 220. When the stent inner tube 230 is shrunk in the stent outer tube 220, the stent outer tube 220 is positioned in the gap 723 and is prevented from interfering with the side shielding part 721 of the decorative front cover 720; the side shielding part 721 is not directly connected with the stent inner tube 230, so that the surface integrity of the side shielding part 721 is ensured, the aesthetic degree is improved, and the top mounting part 722 is fixedly connected with the stent inner tube 230 through screws. Preferably, in order to prevent the side shielding portion 721 from shaking left and right, a guide rib 724 is disposed on an inner wall of the top mounting portion 722, a guide groove 231 is disposed on a top surface of the bracket inner tube 230, the guide rib 724 is embedded in the guide groove 231, and then the top mounting portion 722 and the bracket inner tube 230 are locked by an inner screw, so that the inner wall of the top mounting portion 722 abuts against a top surface of the bracket outer tube 220, and the decorative front cover 720 is more stably mounted.

Because the inner bracket tube 230 and the decorative front cover 720 move relative to the outer bracket tube 220, and the outer bracket tube 220 is provided with the equipment mounting bracket 600, in order to avoid the conflict between the decorative front cover 720 and the equipment mounting bracket 600 when the decorative front cover 720 is contracted in the outer bracket tube 220, and simultaneously reduce the volume of the whole projector bracket 200, two sides of the equipment mounting bracket 600 are provided with the inward concave grooves 640, the grooves 640 are matched with the side shielding parts 721, and when the inner bracket tube 230 is contracted in the outer bracket tube 220, the side shielding parts 721 of the decorative front cover 720 are positioned in the grooves 640. The opening 715 of the decorative cover 713 can be used as a heat sink, and also can be used as a telescopic port of the bracket inner tube 230 and the decorative front cover 720, and the bracket inner tube 230 is telescopic in the opening 715; the decorative front cover 720 is fixedly coupled to the stent inner tube 230 and moves with the stent inner tube 230 in the opening 715.

As shown in fig. 8 and 14, the multimedia control system of the present embodiment further includes a network synchronous clock 460, the network synchronous clock 460 is disposed on the rack body or the decoration structure 700, the network synchronous clock 460 includes a clock circuit 461 and a display screen 462, the display screen 462 is connected to the clock circuit 461, and the clock circuit 461 includes a network automatic calibration circuit.

More specifically, the network synchronous clock 460 of the present embodiment is disposed on the decorative front cover 720, the network synchronous clock 460 includes a clock circuit 461 and a display screen 462, the display screen 462 is connected to the clock circuit 461, an installation position 731 is disposed on the decorative front cover 720, the network synchronous clock 460 is located at the installation position 731, a sealing plate 733 is further disposed on the decorative front cover 720, the sealing plate 733 is made of a transparent or translucent material, the sealing plate 733 covers the installation position 731, and is adapted to the display screen 462; clock circuit 461 comprises a network auto-calibration circuit. The decoration front cover 720 is arranged at the front end of the bracket main body and faces the position of the students, the bracket main body is arranged above the teaching white board, and the network synchronous clock 460 is arranged on one surface of the decoration front cover 720 facing the middle part of the classroom and faces the students, so that each student can see the display screen 462 of the network synchronous clock 460; in addition, a sealing plate 733 is disposed outside the display screen 462 to protect the display screen 462, and the sealing plate 733 may be made of a transparent or translucent acrylic plate. The network automatic calibration circuit in the clock circuit 461 includes a network central control circuit, the network central control circuit is connected with an external network server, the external network server is connected with a network time server, the specific circuit belongs to a mature technology, and can be a time adjusting module and a network data reading module disclosed in a patent publication, an automatic time calibration electronic clock (publication number: CN 204807947), or other existing control circuits connected with the external network. The display screen 462 includes a display circuit, and the display circuit is connected with the time circuit, and the display screen 462 of this embodiment can be a four-segment LED digital display tube module, and can also be an LED flat panel display.

In addition, the clock circuit 461 includes an hour adjusting key 463 and a minute adjusting key 464 for adjusting the clock circuit 461 at the initial stage, two small holes are provided on the sealing plate 733, and the hour adjusting key 463 and the minute adjusting key 464 are respectively located in the small holes and protrude from the sealing plate 733, which is convenient for users to press the keys.

In order to further enhance the shielding decoration effect of the decoration structure 700, the decoration front cover 720 includes a front cover plate 730 extending downward, the front cover plate 730 is located outside the cavity 711 and is disposed facing the student, and the mounting position 731 is disposed on the front cover plate 730. When the projector bracket 200 is used, a user is generally positioned in front of the bracket, and the projector bracket 200 is seen from the user's perspective, because of the existence of the front cover plate 730, the user cannot see the internal structure of the bracket, and meanwhile, the front cover plate 730 can also shield the connecting structure of the projector mounting table 240 and the projector 100, so that the attractiveness of the projector 100 and the bracket is further improved. In addition, in order to facilitate installation of the desynchronized network clock 460, the front cover plate 730 comprises a housing 732 and a cover 734, the cover 734 is adapted to the housing 732, a fixing post 736 is arranged on an inner wall of the housing 732, the desynchronized network clock 460 is fixedly connected with the fixing post 736 and is positioned between the housing 732 and the cover 734, a clock circuit 461 is positioned between the housing 732 and the cover 734 and is locked and fixed with the fixing post 736 through screws, the display screen 462 is positioned in a cavity 735 on one side of the housing 732 facing the middle of a classroom, the clock circuit 461 is electrically connected with the display screen 462, and then the cover 734 and the housing 732 are locked and fixed through screws. The cover 734 on the decorative front cover 720 can be located at the position of the front cover 730 and can be disposed at the bottom of the side shielding portion 721, and the cover 734 can be integrally formed by a sheet metal material to directly seal the bottom of the side shielding portion 721 and the rear portion of the front cover 730.

The projector 100 in this embodiment may be an ultra-short-focus projector 100, the requirement for the adjustment accuracy of the projector 100 is high, when the bracket fixing seat 210 is installed, a problem that a hole may be drilled on a wall with inaccuracy may exist, if an error is small, a fine adjustment structure may be adopted for adjustment, if the error is too large, the existing installation seat of the ultra-short-focus projector bracket 200 may not be adjusted after being fixed, the bracket fixing seat 210 needs to be detached for re-drilling installation, so that not only is the damage on the wall surface serious, but also the stability of the bracket tube and the projector 100 is affected. Therefore, as shown in fig. 10 to 13, a longitudinal adjusting assembly 250 and a transverse adjusting assembly 260 are connected between the bracket fixing base 210 and the bracket tube, and the bracket fixing base 210 includes a movable space 213 for accommodating the longitudinal adjusting assembly 250 and the transverse adjusting assembly 260; the longitudinal adjusting component 250 is movably connected with the transverse adjusting component 260, and one of the longitudinal adjusting component 250 and the transverse adjusting component 260 is connected with the bracket fixing seat 210; the bracket tube is fixedly connected with the longitudinal adjusting component 250 and/or the transverse adjusting component 260, penetrates out of the bracket fixing seat 210 and is connected with the projector 100.

The upper end face and the lower end face of the bracket fixing seat 210 are provided with extension edges 211, the extension edges 211 are provided with mounting holes 212, when the bracket fixing seat is mounted, holes are needed to be punched at corresponding positions of a wall body, then the wall holes are aligned with the mounting holes 212, expansion screws are inserted, and the bracket fixing seat 210 and the wall body are locked and fixed; it should be noted that the extension sides 211 may also be disposed on the left and right sides of the bracket fixing base 210, or the extension sides 211 may be disposed around the bracket fixing base 210, so as to achieve more stable and firm installation. The inside of the bracket fixing seat 210 is provided with a movable space 213 for accommodating the longitudinal adjusting component 250 and the transverse adjusting component 260, before the bracket fixing seat 210 is fixedly connected with a wall body, the longitudinal adjusting component 250 and the transverse adjusting component 260 are assembled and placed into the movable space 213, the size of the movable space 213 is matched with the adjusting range of a bracket pipe, the front surface of the bracket fixing seat 210, which corresponds to the movable space 213, is provided with a through groove 214 for the bracket pipe to penetrate out, and meanwhile, the area of the through groove 214 is larger than the cross section area of the bracket pipe, so that the position of the through groove 214 can be adjusted and moved; the bracket pipe is used to connect the bracket holder 210 and the projector 100.

As shown in fig. 10 to 13, the longitudinal adjustment assembly 250 includes a longitudinal adjustment groove 251, a longitudinal adjustment rod 253, and a longitudinal adjustment seat 252, the lateral adjustment assembly 260 includes a lateral adjustment groove 261, a lateral adjustment rod 262, and a lateral adjustment seat 263, the longitudinal adjustment rod 253 and the lateral adjustment rod 262 are vertically disposed, and the lateral adjustment assembly 260 further includes a locking member 264, and the locking member 264 passes through the longitudinal adjustment groove 251 to ensure that the lateral adjustment assembly 260 and the stent tube move up and down along the longitudinal adjustment groove 251.

The longitudinal adjusting seat 252 is movably connected with the transverse adjusting seat 263, and the support tube is fixedly connected with the transverse adjusting seat 263 in a screw connection mode. The transverse adjusting groove 261 is arranged on the side surface of the bracket fixing seat 210 in the vertical direction, the longitudinal adjusting groove 251 is arranged on the side surface of the longitudinal adjusting seat 252 in the horizontal direction, the longitudinal adjusting rod 253 is connected with the transverse adjusting seat 263 and the longitudinal adjusting seat 252 and penetrates out of the upper surface of the bracket fixing seat 210, the upper surface of the bracket fixing seat 210 is further provided with a sliding groove 222 for the longitudinal adjusting rod 253 to move left and right, the transverse adjusting rod 262 penetrates through the transverse adjusting groove 261 and is locked, and the locking member 264 penetrates through the longitudinal adjusting groove 251 and is locked. The transverse adjusting rod 262 and the longitudinal adjusting rod 253 are in bolt structures, when the transverse position of the support tube needs to be adjusted, the transverse adjusting rod 262 is unscrewed, the locking piece 264 is taken down, the longitudinal adjusting rod 253 is unscrewed if necessary, the transverse adjusting rod 262 which is vertically arranged moves left and right along the transverse adjusting groove 261 to a required position, and then the transverse adjusting rod 262 and the locking piece 264 are locked; when the longitudinal position of the stent tube needs to be adjusted, the locking member 264 is unscrewed, the transverse adjusting rod 262 is removed or unscrewed, the longitudinal adjusting rod 253 is adjusted to the required position, and then the locking member 264, the transverse adjusting rod 262 and the longitudinal adjusting rod 253 are screwed tightly.

In order to realize the connection between the longitudinal adjusting seat 252 and the transverse adjusting seat 263, a clamping groove nut 254 is arranged on the longitudinal adjusting rod 253, a nut clamping groove 265 is arranged on the transverse adjusting seat 263, and the transverse adjusting seat 263 is clamped with the clamping groove nut 254 through the nut clamping groove 265. The slot nut 254 is in threaded connection with the longitudinal adjustment rod 253, and the slot nut 254 can move up and down spirally relative to the longitudinal adjustment rod 253. As shown in fig. 11 and 12, the locking groove 717 on the locking groove nut 254 is a square groove, and correspondingly, the nut locking groove 265 on the transverse adjustment seat 263 is a square groove, so that when the longitudinal adjustment rod 253 is rotated, since the transverse adjustment seat 263 cannot rotate, the locking groove nut 254 can spirally ascend or descend along the longitudinal adjustment rod 253, thereby adjusting the height of the transverse adjustment seat 263 and the support tube connected thereto. In addition, in order to further enhance the strength and stability of the longitudinal adjustment rod 253, the longitudinal adjustment rod 253 is arranged at the upper end of the longitudinal adjustment seat 252, the longitudinal adjustment seat 252 comprises an inner accommodating cavity 255, the transverse adjustment seat 263 is located in the inner accommodating cavity 255, a boss 256 is arranged in the inner accommodating cavity 255, a locking nut 257 is arranged in the boss 256, the longitudinal adjustment rod 253 penetrates through the boss 256 and is in threaded connection with the locking nut 257, and when the longitudinal adjustment rod 253 rotates, the locking nut 257 rotates along with the longitudinal adjustment rod 253.

In addition, the adjusting knob 232 is arranged on the inner tube 230 of the bracket for performing some fine adjustment operations on the projector 100, after the decorative structure 700 is covered, in order to facilitate the operation of the adjusting knob 232, the decorative front cover 720 includes a window 725, the window 725 is located outside the cavity 711, the adjusting knob 232 is exposed in the window 725, the window 725 may be a through hole structure, and a user may operate the adjusting knob 232 from above or below the window 725.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a put top formula multimedia control system, includes projector, projector support, audio amplifier and control system, its characterized in that: the central control system comprises a computer host module, a multimedia audio and video control module, a network control module and a power management module; the computer host module, the multimedia audio and video control module, the network control module and the power management module are arranged in a centralized manner, and are arranged above the teaching board together with the projector bracket, and the sound box is connected with the central control system.

2. The top-mounted multimedia control system of claim 1, wherein: the central control system comprises a control box, the control box is connected with the computer host module and the multimedia audio and video control module, and the control box is arranged on the side edge of the teaching board.

3. The top-mounted multimedia control system of claim 1, wherein: the loudspeaker box is arranged above the teaching board and connected with the projector support, the loudspeaker box comprises a left loudspeaker box, a right loudspeaker box and an equipment box, the left loudspeaker box and the right loudspeaker box are box bodies with loudspeakers, the equipment box is a box body with a circuit board, the power management module is arranged in the equipment box, the length and the width of the equipment box are matched with those of the circuit board, and the equipment box is fixedly connected with the left loudspeaker box and the right loudspeaker box through an assembly structure and an electric connection structure.

4. The top-mounted multimedia control system of claim 3, wherein: the equipment box includes casing and panel, the circuit board with power management module set up in the casing, be equipped with the screens strip on the inner wall of panel, the striding is equipped with the panel mounting on the casing, on the panel mounting with the position that the screens strip corresponds is equipped with the screens groove, the screens strip with screens groove joint is in order to incite somebody to action the panel is fixed on the casing.

5. The top-mounted multimedia control system according to any of claims 1 to 4, wherein: the projector support comprises a support main body, an equipment mounting support is arranged on the support main body, and the equipment mounting support is fixedly connected with the support main body; be equipped with decorative structure in the support main part, decorative structure includes the shroud, the shroud cover is established in the support main part, the shroud includes the cavity, the support main part with the equipment fixing support is located in the cavity, the computer host module multimedia audio video control module with one or more in the network control module set up in the equipment fixing support.

6. The top-mounted multimedia control system of claim 5, wherein: the bracket main body further comprises a bracket pipe and a bracket fixing seat, a longitudinal adjusting assembly and a transverse adjusting assembly are connected between the bracket fixing seat and the bracket pipe, and the bracket fixing seat comprises a movable space for accommodating the longitudinal adjusting assembly and the transverse adjusting assembly; the longitudinal adjusting assembly is movably connected with the transverse adjusting assembly, and one of the longitudinal adjusting assembly and the transverse adjusting assembly is connected with the bracket fixing seat; the bracket pipe is fixedly connected with the longitudinal adjusting assembly and/or the transverse adjusting assembly, penetrates out of the bracket fixing seat and is connected with the projector.

7. The top-mounted multimedia control system of claim 6, wherein: the support tube comprises a support outer tube, and the equipment mounting support is arranged on the support outer tube; the shroud is in including covering base on the support fixing base, cover decoration lid on the support outer tube, the equipment fixing support sets up decoration lid with between the support outer tube, decoration lid includes arc top surface and opening, the opening sets up the least significant end of arc top surface.

8. The top-mounted multimedia control system of claim 7, wherein: the support tube comprises a support inner tube movably connected with the support outer tube, the decoration structure comprises a decoration front cover fixedly connected with the support inner tube, and the decoration front cover moves relative to the cover cap along with the support inner tube.

9. The top-mounted multimedia control system of claim 8, wherein: the decorative front cover comprises a side shielding part and a top mounting part, the side shielding part is covered on the outer side of the bracket outer tube and is fixedly connected with the bracket inner tube through the top mounting part, and a gap is formed between the side shielding part and the bracket inner tube and used for accommodating the bracket outer tube; and two sides of the equipment mounting bracket are provided with inwards concave grooves which are matched with the side shielding parts.

10. The top-mounted multimedia control system of claim 5, wherein: the rack is characterized by further comprising a network synchronous clock, wherein the network synchronous clock is arranged on the bracket main body or the decorative structure and comprises a clock circuit and a display screen, the display screen is connected with the clock circuit, and the clock circuit comprises a network automatic calibration circuit.