External magnetic type support of portable display

Abstract

The invention belongs to the technical field of displayer supports, and particularly relates to a portable displayer with an external magnetic attraction type support which comprises a base, a folding type supporting mechanism and an anti-magnetic-disturbance type fixing mechanism, the folding type supporting mechanism is arranged on the upper wall of the base, and the anti-magnetic-disturbance type fixing mechanism is arranged on the folding type supporting mechanism. The folding type supporting mechanism comprises a height adjusting mechanism and an angle adjusting mechanism, the height adjusting mechanism is arranged on the upper wall of the base, and the angle adjusting mechanism is arranged at the end, away from the base, of the height adjusting mechanism. According to the external magnetic attraction type support of the portable display, the magnetic field intensity can be converted into negative-pressure attraction force, the installation stability of the display can be guaranteed, and the situation that components in the display are interfered by high intensity can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of display brackets, and specifically refers to a portable display with an external magnetic bracket. Background Art

[0002] The magnetic mount uses magnetic force to attach the display to ensure that it is firmly fixed in the intended position. This connection method can provide stable support and prevent the display from falling off or being damaged due to accidental collision or movement.

[0003] The existing magnetic brackets have the following problems: The existing magnetic bracket can provide stable support for the monitor in most cases, but in some extreme cases, such as bumpy roads or windy outdoor environments, there will be insufficient stability problems, causing the monitor to slip or be damaged. If the magnetic force of the magnetic bracket is increased to fix the monitor, the magnetic field strength will be too large, which will interfere with the electronic components inside the monitor. Therefore, it cannot meet the existing use requirements of the magnetic bracket. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present solution provides a portable monitor with an external magnetic bracket which can convert the magnetic field strength into negative pressure suction, which can not only ensure the installation stability of the monitor, but also avoid strong interference with the internal components of the monitor.

[0005] The technical solution adopted in this scheme is as follows: This scheme proposes a portable display with an external magnetic bracket, including a base, a foldable support mechanism and an anti-magnetic interference type fixing mechanism, the foldable support mechanism is arranged on the upper wall of the base, the anti-magnetic interference type fixing mechanism is arranged on the foldable support mechanism, the foldable support mechanism includes a height adjustment mechanism and an angle adjustment mechanism, the height adjustment mechanism is arranged on the upper wall of the base, the angle adjustment mechanism is arranged at the end of the height adjustment mechanism away from the base, the anti-magnetic interference type fixing mechanism includes an adsorption component, a negative pressure component, a cooling component and a machine drive component, the adsorption component is arranged at the end of the angle adjustment mechanism away from the height adjustment mechanism, the negative pressure component is arranged inside the angle adjustment mechanism, the cooling component is arranged on the side of the angle adjustment mechanism away from the adsorption component, and the machine drive component is arranged on the side of the angle adjustment mechanism close to the negative pressure component.

[0006] As a further preferred embodiment of the present invention, the height adjusting mechanism includes a height adjusting frame, a height adjusting shaft, a height adjusting nut and a folding frame. The height adjusting frame is symmetrically arranged on the upper walls at both ends of the base, the height adjusting shaft is arranged at the end of the height adjusting frame away from the base, the height adjusting nut is symmetrically arranged at both ends of the height adjusting shaft, the height adjusting nut is threadedly connected to the height adjusting shaft, and the folding frame is rotatably arranged on the outside of the height adjusting shaft; the angle adjusting mechanism includes an angle frame, an angle shaft, an angle nut and an angle box. The angle frame is arranged on a side of the folding frame away from the height adjusting shaft, the angle shaft is rotatably arranged at one end of the angle frame away from the folding frame, the angle nut is arranged at one end of the angle shaft, the angle nut is threadedly connected to the angle shaft, the angle box is arranged between the angle shafts, and the angle box is opened at one end.

[0007] When in use, rotate the height-adjusting nut, the height-adjusting nut rotates along the height-adjusting axis away from the side wall of the folding frame, the folding frame changes from a fixed state to an active state, the folding frame rotates and lifts around the height-adjusting axis, the folding frame drives the angle box to rise through the angle frame, rotate the height-adjusting nut to fit into the side wall of the height-adjusting frame, the height-adjusting axis changes to a fixed state, rotate the angle nut, the angle nut rotates along the angle axis away from the side wall of the angle frame, the angle axis changes from a fixed state to an active state, turn the angle box, the angle box rotates to adjust the angle, and then rotate the angle nut to fit into the side wall of the angle frame, and the angle axis changes to a fixed state.

[0008] Preferably, the adsorption component includes an assembly plate, an adsorption magnet and a mounting groove, the assembly plate is arranged on the inner wall of the angle box opening, the mounting groove is arranged on the side of the assembly plate away from the angle box, the mounting groove is open at one end, and multiple groups of the adsorption magnets penetrate the mounting grooves and are arranged on the inner wall of the assembly plate; the negative pressure component includes a negative pressure copper plate, a suction port, a rubber strip, a sliding magnet, a driving electromagnet, a connecting spring, a one-way air inlet valve and a one-way air outlet valve, the negative pressure copper plate is slidably arranged on the inner wall of the angle box, the suction port is arranged on the side wall of the assembly plate between the adsorption magnets, the rubber strip is arranged on the inner wall of the mounting groove outside the suction port, multiple groups of the sliding magnets are arranged on the side of the negative pressure copper plate away from the assembly plate, and multiple groups of the driving electromagnets are arranged on the angle box away from the assembly plate The inner wall of one end of the angle box, the sliding magnet and the driving electromagnet are arranged opposite to each other, the connecting spring is arranged between the negative pressure copper plate and the inner wall of the angle box, the one-way air inlet valve and the one-way air outlet valve are respectively connected and arranged on the side of the angle box away from the assembly plate; the cooling component includes a cooling port and a thermoelectric cooling sheet, and multiple groups of the cooling ports are arranged on the side of the angle box close to the one-way air inlet valve and the one-way air outlet valve, the thermoelectric cooling sheet is arranged inside the cooling port, and the cooling end of the thermoelectric cooling sheet is arranged inside the angle box; the machine drive component includes a hand crank and a locking threaded sleeve, the hand crank passes through the angle box and is rotatably arranged on the side wall of the negative pressure copper plate, the hand crank is threadedly connected to the angle box, the locking threaded sleeve is arranged at one end of the hand crank away from the negative pressure copper plate, and the locking threaded sleeve is threadedly connected to the hand crank.

[0009] When in use, the display is fitted onto the assembly board, the mounting components of the display are engaged in the mounting grooves, the adsorption magnets adsorb the mounting components of the display through magnetic force, the display is fixed to the side wall of the assembly board, the thermoelectric cooling sheet cools the air inside the angle box through the cooling end, the temperature of the negative pressure copper plate inside the angle box is gradually reduced due to the influence of the cold air, and the assembly board cools the display through the suction port.

[0010] Specifically, a battery is provided on the side wall of the angle box.

[0011] Wherein, a controller is provided on the side of the angle box away from the battery.

[0012] Preferably, the controller is electrically connected to the battery, the driving electromagnet and the thermoelectric cooling sheet respectively.

[0013] The beneficial effects achieved by adopting the above structure are as follows: Compared with the prior art, the present invention adopts a method combining a negative pressure structure with a magnetic field force. Through the folding support mechanism and the anti-magnetic interference fixing mechanism, the display can be stably installed and fixed under the coordinated use of the height adjustment mechanism, the angle adjustment mechanism, the adsorption component, the negative pressure component, the cooling component and the machine drive component. In outdoor environments with bumpy roads or strong winds, the display can be stably supported without causing adverse effects on the display. The mounting components of the display are engaged in the mounting groove, and the adsorption magnets adsorb the mounting components of the display through magnetic force. The display is fixed to the side wall of the assembly board, and the thermoelectric cooling sheet cools the air inside the angle box through the cooling end. The temperature of the negative pressure copper plate inside the angle box is gradually reduced due to the influence of the cold air, and the assembly board cools the display through the suction port. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this scheme; Figure 2 This is the main stereogram of the scheme; Figure 3 This is a schematic diagram of the internal structure of this scheme; Figure 4 This is a schematic diagram of the structure of the adsorption component of this scheme; Figure 5 This is a schematic diagram of the structure of the negative pressure component of this scheme; Figure 6 This is the main view of this scheme; Figure 7 This is a side view of the scheme; Figure 8 for Figure 6 AA section view of the part; Fig. 9 for Figure 3 A magnified structural view of part I; Fig.10 for Figure 8 A magnified structural view of Part II.

[0015] Among them, 1. base, 2. folding support mechanism, 3. height adjustment mechanism, 4. height adjustment frame, 5. height adjustment shaft, 6. height adjustment nut, 7. folding frame, 8. angle adjustment mechanism, 9. angle frame, 10. angle shaft, 11. angle nut, 12. angle box, 13. anti-magnetic interference type fixing mechanism, 14. adsorption component, 15. assembly plate, 16. adsorption magnet, 17. negative pressure component, 18. negative pressure copper plate, 19. suction port, 20. rubber strip, 21. sliding magnet, 22. driving electromagnet, 23. connecting spring, 24. cooling component, 25. cooling port, 26. thermoelectric cooling sheet, 27. machine drive component, 28. hand crank, 29. locking threaded sleeve, 30. battery, 31. controller, 32. mounting slot, 33. one-way air inlet valve, 34. one-way air outlet valve.

[0016] The accompanying drawings are used to provide further understanding of the present scheme and constitute a part of the specification. Together with the embodiments of the present scheme, they are used to explain the present scheme and do not constitute a limitation on the present scheme. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the present scheme will be clearly and completely described below in conjunction with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are only part of the embodiments of the present scheme, not all of the embodiments; based on the embodiments in the present scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present scheme.

[0018] In the description of this scheme, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this scheme.

[0019] like Figure 1-Figure 10As shown, the present invention proposes a portable display with an external magnetic bracket, comprising a base 1, a foldable support mechanism 2 and an anti-magnetic interference type fixing mechanism 13, wherein the foldable support mechanism 2 is arranged on the upper wall of the base 1, and the anti-magnetic interference type fixing mechanism 13 is arranged on the foldable support mechanism 2, the foldable support mechanism 2 comprises a height adjustment mechanism 3 and an angle adjustment mechanism 8, the height adjustment mechanism 3 is arranged on the upper wall of the base 1, and the angle adjustment mechanism 8 is arranged at the end of the height adjustment mechanism 3 away from the base 1, the anti-magnetic interference type fixing mechanism 13 comprises an adsorption component 14, a negative pressure component 17, a cooling component 24 and a machine drive component 27, the adsorption component 14 is arranged at the end of the angle adjustment mechanism 8 away from the height adjustment mechanism 3, the negative pressure component 17 is arranged inside the angle adjustment mechanism 8, the cooling component 24 is arranged on the side of the angle adjustment mechanism 8 away from the adsorption component 14, and the machine drive component 27 is arranged on the side of the angle adjustment mechanism 8 close to the negative pressure component 17.

[0020] The height adjustment mechanism 3 includes a height adjustment frame 4, a height adjustment shaft 5, a height adjustment nut 6 and a folding frame 7. The height adjustment frame 4 is symmetrically arranged on the upper walls at both ends of the base 1, the height adjustment shaft 5 is arranged at the end of the height adjustment frame 4 away from the base 1, the height adjustment nut 6 is symmetrically arranged at both ends of the height adjustment shaft 5, the height adjustment nut 6 is threadedly connected to the height adjustment shaft 5, and the folding frame 7 is rotatably arranged on the outside of the height adjustment shaft 5; the angle adjustment mechanism 8 includes an angle frame 9, an angle shaft 10, an angle nut 11 and an angle box 12. The angle frame 9 is arranged on the side of the folding frame 7 away from the height adjustment shaft 5, the angle shaft 10 is rotatably arranged at the end of the angle frame 9 away from the folding frame 7, the angle nut 11 is arranged at one end of the angle shaft 10, the angle nut 11 is threadedly connected to the angle shaft 10, and the angle box 12 is arranged between the angle shafts 10, and the angle box 12 is opened at one end.

[0021] The adsorption component 14 includes an assembly plate 15, an adsorption magnet 16 and a mounting groove 32. The assembly plate 15 is arranged on the inner wall of the opening of the angle box 12. The mounting groove 32 is arranged on the side of the assembly plate 15 away from the angle box 12. The mounting groove 32 is opened at one end. Multiple groups of the adsorption magnets 16 penetrate the mounting grooves 32 and are arranged on the inner wall of the assembly plate 15. The negative pressure component 17 includes a negative pressure copper plate 18, a suction port 19, a rubber strip 20, a sliding magnet 21, a driving The electromagnet 22, the connecting spring 23, the one-way air inlet valve 33 and the one-way air outlet valve 34, the negative pressure copper plate 18 is slidably arranged on the inner wall of the angle box 12, the suction port 19 is arranged on the side wall of the assembly plate 15 between the adsorption magnets 16, the rubber strip 20 is arranged on the inner wall of the mounting groove 32 outside the suction port 19, multiple groups of the sliding magnets 21 are arranged on the side of the negative pressure copper plate 18 away from the assembly plate 15, and multiple groups of the driving electromagnets 22 are arranged on the angle box 12 away from the assembly plate 15. 5, the sliding magnet 21 and the driving electromagnet 22 are arranged opposite to each other, the connecting spring 23 is arranged between the negative pressure copper plate 18 and the inner wall of the angle box 12, the one-way air inlet valve 33 and the one-way air outlet valve 34 are respectively connected and arranged on the side of the angle box 12 away from the assembly plate 15; the cooling component 24 includes a cooling port 25 and a thermoelectric cooling sheet 26, and multiple groups of the cooling ports 25 are arranged on the side of the angle box 12 close to the one-way air inlet valve 33 and the one-way air outlet valve 34. The thermoelectric cooling sheet 26 is arranged inside the cooling port 25, and the cooling end of the thermoelectric cooling sheet 26 is arranged inside the angle box 12; the machine drive component 27 includes a hand crank 28 and a locking threaded sleeve 29, the hand crank 28 passes through the angle box 12 and is rotatably arranged on the side wall of the negative pressure copper plate 18, the hand crank 28 is threadedly connected to the angle box 12, and the locking threaded sleeve 29 is arranged at one end of the hand crank 28 away from the negative pressure copper plate 18, and the locking threaded sleeve 29 is threadedly connected to the hand crank 28.

[0022] A battery 30 is disposed on the side wall of the angle box 12 .

[0023] A controller 31 is provided on a side of the angle box 12 away from the battery 30 .

[0024] The controller 31 is electrically connected to the battery 30 , the driving electromagnet 22 , and the thermoelectric cooling sheet 26 , respectively.

[0025] When in use, in the initial state, the angle between the folding frame 7 and the height-adjusting frame 4 is the minimum value, the height-adjusting nut 6 is fitted with the height-adjusting shaft 5, the height-adjusting shaft 5 is in a fixed state, the angle box 12 is placed with the opening facing downward, the angle nut 11 is fitted with the angle frame 9, the angle shaft 10 is in a fixed state, the locking threaded sleeve 29 is fitted with the side wall of the angle box 12, the hand crank 28 is in a fixed state, the connecting spring 23 is in an extended setting, the distance between the negative pressure copper plate 18 and the assembly plate 15 is the minimum value, the battery 30 is fully charged, and the battery 30 provides power for the operation of the magnetic bracket; When the display is used in an outdoor environment, the height adjustment nut 6 is manually rotated, and the height adjustment nut 6 rotates along the height adjustment shaft 5 away from the side wall of the folding frame 7, and the folding frame 7 changes from a fixed state to a movable state. The folding frame 7 rotates and lifts around the height adjustment shaft 5, and the folding frame 7 drives the angle box 12 to rise through the angle frame 9, and the height adjustment nut 6 is rotated to fit the side wall of the height adjustment frame 4, and the height adjustment shaft 5 changes to a fixed state, and the angle nut 11 is rotated, and the angle nut 11 rotates along the angle shaft 10 away from the side wall of the angle frame 9, and the angle shaft 10 changes from a fixed state to a movable state, and the angle box 12 is turned, and the angle box 12 rotates to adjust the angle, and then the angle nut 11 is rotated to fit the side wall of the angle frame 9, and the angle shaft 10 changes to a fixed state, and the adjustment of the display placement height and angle is completed; A metal iron plate that can be attracted by magnetic force is pre-arranged on the back of the display, a through groove corresponding to the suction port 19 is cut on the side wall of the metal plate, a metal copper plate is installed inside the through groove, the display is attached to the assembly board 15, the mounting component of the display is engaged inside the mounting groove 32, the adsorption magnet 16 is attached to the metal plate, the adsorption magnet 16 adsorbs the mounting component of the display by magnetic force, the display is fixed to the side wall of the assembly board 15, and the rubber strip 20 is between the assembly board 15 and the metal copper plate set on the display to seal the suction port 19; The controller 31 controls the thermoelectric cooling sheet 26 to start, and the thermoelectric cooling sheet 26 cools the air inside the angle box 12 through the cooling end. The negative pressure copper plate 18 is affected by the cold air inside the angle box 12 and its temperature gradually decreases. The assembly board 15 cools the metal copper plate set on the back of the display through the suction port 19. The metal copper plate cools the display to ensure stable operation of the display outdoors. Since there are many uncertain factors in using the display outdoors, road bumps and strong winds will affect the fixation of the display. In order to avoid interference of the strong magnetic field on the operation of the display, at this time, the controller 31 controls the driving electromagnet 22 to start, the driving electromagnet 22 is energized to generate magnetism, the driving electromagnet 22 and the sliding magnet 21 are set with opposite poles, the driving electromagnet 22 is fixed to the inner wall of the angle box 12 and the sliding magnet 21 is attracted by magnetic force, the sliding magnet 21 drives the negative pressure copper plate 18 to slide along the inner wall of the angle box 12, and the negative pressure copper plate 18 and the assembly plate 15 are connected. As the distance between the two increases, the space between the assembly board 15 and the negative pressure copper plate 18 increases with the sliding of the negative pressure copper plate 18, while the amount of air between the assembly board 15 and the negative pressure copper plate 18 remains unchanged, so that the inside of the assembly board 15 and the negative pressure copper plate 18 is in a negative pressure state, and the negative pressure space formed between the assembly board 15 and the negative pressure copper plate 18 adsorbs the metal copper plate on the back of the display through the suction port 19, thereby firmly fixing the display to the side wall of the assembly board 15, achieving the purpose of stably supporting the display without causing adverse effects on the display; When the negative pressure copper plate 18 is away from the assembly plate 15, the air inside the angle box 12 is discharged through the one-way air outlet valve 34. When the connecting spring 23 is reset and extended to push the negative pressure copper plate 18 closer to the assembly plate 15, the outside air enters the angle box 12 through the one-way air inlet valve 33. When the power inside the battery 30 is used up, turn the hand crank 28. The hand crank 28 uses the deformation of the connecting spring 23 to drive the negative pressure copper plate 18 away from the assembly plate 15. Then rotate the locking threaded sleeve 29. The locking threaded sleeve 29 rotates along the hand crank 28 and fits the side wall of the angle box 12. The display fixing structure is manually strengthened to ensure the stable placement of the display. Repeat the above operation when you use it next time.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] The above is a description of the present solution and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the creative purpose of the present solution, they should all fall within the protection scope of the present solution.

Claims

1. A portable display with an external magnetic bracket, comprising a base (1), characterized in that: The invention also comprises a foldable support mechanism (2) and an anti-magnetic interference type fixing mechanism (13), wherein the foldable support mechanism (2) is arranged on the upper wall of the base (1), and the anti-magnetic interference type fixing mechanism (13) is arranged on the foldable support mechanism (2). The foldable support mechanism (2) comprises a height adjustment mechanism (3) and an angle adjustment mechanism (8), wherein the height adjustment mechanism (3) is arranged on the upper wall of the base (1), and the angle adjustment mechanism (8) is arranged at an end of the height adjustment mechanism (3) away from the base (1). The mechanism (13) comprises an adsorption component (14), a negative pressure component (17), a cooling component (24) and a machine drive component (27); the adsorption component (14) is arranged at one end of the angle adjustment mechanism (8) away from the height adjustment mechanism (3); the negative pressure component (17) is arranged inside the angle adjustment mechanism (8); the cooling component (24) is arranged at a side of the angle adjustment mechanism (8) away from the adsorption component (14); and the machine drive component (27) is arranged at a side of the angle adjustment mechanism (8) close to the negative pressure component (17).

2. A portable display with an external magnetic bracket according to claim 1, characterized in that: The height adjustment mechanism (3) comprises a height adjustment frame (4), a height adjustment shaft (5), a height adjustment nut (6) and a folding frame (7); the height adjustment frame (4) is symmetrically arranged on the upper walls at both ends of the base (1); the height adjustment shaft (5) is arranged at one end of the height adjustment frame (4) away from the base (1); the height adjustment nut (6) is symmetrically arranged at both ends of the height adjustment shaft (5); the height adjustment nut (6) is threadedly connected to the height adjustment shaft (5); and the folding frame (7) is rotatably arranged outside the height adjustment shaft (5).

3. The portable display with an external magnetic bracket according to claim 2, characterized in that: The angle adjustment mechanism (8) comprises an angle frame (9), an angle shaft (10), an angle nut (11) and an angle box (12); the angle frame (9) is arranged on a side of the folding frame (7) away from the height adjustment shaft (5); the angle shaft (10) is rotatably arranged on an end of the angle frame (9) away from the folding frame (7); the angle nut (11) is arranged on one end of the angle shaft (10); the angle nut (11) is threadedly connected to the angle shaft (10); the angle box (12) is arranged between the angle shafts (10); and the angle box (12) is arranged with one end open.

4. The portable display with an external magnetic bracket according to claim 3, characterized in that: The adsorption component (14) comprises an assembly plate (15), an adsorption magnet (16) and a mounting groove (32); the assembly plate (15) is arranged on the inner wall of the opening of the angle box (12); the mounting groove (32) is arranged on a side of the assembly plate (15) away from the angle box (12); the mounting groove (32) is arranged with an opening at one end; and a plurality of groups of the adsorption magnets (16) penetrate the mounting groove (32) and are arranged on the inner wall of the assembly plate (15).

5. The portable display with an external magnetic bracket according to claim 4, characterized in that: The negative pressure assembly (17) comprises a negative pressure copper plate (18), a suction port (19), a rubber strip (20), a sliding magnet (21), a driving electromagnet (22), a connecting spring (23), a one-way air inlet valve (33) and a one-way air outlet valve (34); the negative pressure copper plate (18) is slidably arranged on the inner wall of the angle box (12); the suction port (19) is arranged on the side wall of the assembly plate (15) between the adsorption magnets (16); the rubber strip (20) is arranged on the inner wall of the mounting groove (32) outside the suction port (19); The sliding magnet (21) is arranged on a side of the negative pressure copper plate (18) away from the assembly plate (15), and the driving electromagnets (22) are arranged on an inner wall of an end of the angle box (12) away from the assembly plate (15). The sliding magnet (21) and the driving electromagnet (22) are arranged opposite to each other, and the connecting spring (23) is arranged between the negative pressure copper plate (18) and the inner wall of the angle box (12). The one-way air inlet valve (33) and the one-way air outlet valve (34) are respectively connected and arranged on a side of the angle box (12) away from the assembly plate (15).

6. The portable display with an external magnetic bracket according to claim 5, characterized in that: The cooling component (24) comprises a cooling port (25) and a thermoelectric cooling sheet (26); a plurality of groups of the cooling ports (25) are arranged on one side of the angle box (12) close to the one-way air inlet valve (33) and the one-way air outlet valve (34); the thermoelectric cooling sheet (26) is arranged inside the cooling port (25); and a cooling end of the thermoelectric cooling sheet (26) is arranged inside the angle box (12).

7. The portable display with an external magnetic bracket according to claim 6, characterized in that: The machine drive assembly (27) comprises a hand crank (28) and a locking threaded sleeve (29); the hand crank (28) penetrates the angle box (12) and is rotatably disposed on the side wall of the negative pressure copper plate (18); the locking threaded sleeve (29) is disposed at one end of the hand crank (28) away from the negative pressure copper plate (18); and the locking threaded sleeve (29) is threadedly connected to the hand crank (28).

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