CN217183656U

CN217183656U - Display screen and power supply box for display screen

Info

Publication number: CN217183656U
Application number: CN202220840310.4U
Authority: CN
Inventors: 扶江水; 娄小波; 肖道粲
Original assignee: Shenzhen Absen Optoelectronic Co Ltd
Current assignee: Shenzhen Absen Optoelectronic Co Ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-08-12
Anticipated expiration: 2032-04-12

Abstract

The utility model provides a display screen and power pack for display screen. The power supply box for the display screen comprises a front shell and a rear cover which are detachably connected, wherein the front shell and the rear cover are adaptive in size, a containing cavity for containing the display screen power supply module is formed inside the front shell and the rear cover when the front shell and the rear cover are connected, a power supply connector is arranged on the front side surface of the front shell and used for being electrically connected with the display module of the display screen, and then the display module and the display screen power supply module are electrically connected. The power supply box can be independent of the display screen frame, so that the structure of the display screen frame is simplified, and the structure of the display screen is simplified.

Description

Display screen and power supply box for display screen

Technical Field

The utility model relates to a display screen technical field, in particular to display screen and power pack for display screen.

Background

With the development of LED technology, LED display screen products are more and more widely applied to various daily work and life occasions. The LED display screen generally comprises a display screen frame, a power supply box and a display module. At present, the lower shell of the power supply box is integrated on the display screen frame, and the display screen frame is generally required to contain a related sealing and mounting structure of the power supply box, so that the structure of the display screen frame is complex, and further the structure of the display screen is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relatively more independent power pack for display screen and have the display screen of this power pack to make the structure of display screen simpler, in order to solve the problem among the prior art.

In order to solve the technical problem, the utility model provides a power supply box for display screen, including dismantling preceding shell and the hou gai of connection, preceding shell with back lid size adaptation, and both are inside when linking to each other to be formed with the holding chamber that is used for holding display screen power module in both, be equipped with power connector on the leading flank of preceding shell, in order to be used for with the display module electric connection of display screen, and then realize the display module with display screen power module's electric connection.

In one embodiment, a plurality of mounting holes are formed at intervals on the periphery of the front shell, and the mounting holes are positioned on the periphery of the accommodating cavity;

the power pack includes a plurality of mounting screws, and is a plurality of mounting screws and a plurality of mounting hole one-to-one sets up for with preceding shell with the display screen frame can be dismantled and be connected.

In one embodiment, the inner peripheral wall of the mounting hole is annularly provided with an internal thread;

the mounting screw comprises a connecting rod, a screw rod and a nut, wherein the screw rod and the nut are respectively arranged at two ends of the connecting rod, the diameter of the nut is larger than the caliber of the mounting hole, the diameter of the screw rod is larger than that of the connecting rod, an external thread is annularly arranged on the periphery of the screw rod, the external thread is matched with the internal thread, the screw and the mounting hole are rotated to penetrate through the mounting hole, the front shell is sleeved on the periphery of the connecting rod, and the screw rod is in threaded connection with the display screen frame.

In one embodiment, the mounting hole includes a passing portion and an accommodating portion, the passing portion is disposed along an axis direction of the mounting hole, the passing portion is communicated with the accommodating portion, the internal thread is disposed on an inner peripheral wall of the passing portion, a diameter of the accommodating portion is larger than a diameter of the screw, and the accommodating portion is close to the display screen frame.

In one embodiment, the mounting screw includes a screw, a nut, and a handle, the screw is used for being screwed with the display screen frame, and the handle is rotatably connected with the nut, so that the handle can be rotated to be perpendicular to the screw and attached to the periphery of the nut or to be parallel to the screw and protrude out of the nut, so as to be rotated and drive the screw to rotate.

In one embodiment, the nut is circular, the handle is semicircular, and the concave surface of the handle faces the nut.

In one embodiment, an operation groove is arranged on the surface of the nut away from the screw, and the opening of the operation groove faces away from the screw for matching with an operation tool;

the operation groove is in a straight line shape, a cross shape or a quincunx shape.

In one embodiment, the nut comprises a hinge portion and a transition portion, the hinge portion is arranged along the axis direction of the nut, the diameter of the hinge portion is larger than that of the transition portion, the transition portion is connected with the connecting rod, the diameter of the transition portion is larger than that of the connecting rod, and the hinge portion is connected with the handle in an articulated mode.

In one embodiment, a plurality of positioning pins are arranged at intervals on the front side surface of the front shell, and each positioning pin protrudes forwards out of the front side surface of the front shell so as to be matched with a positioning hole on the display screen frame;

and a sealing ring is arranged between the front shell and the rear cover in an annular mode to seal the accommodating cavity.

The utility model also provides a display screen, including display screen frame, display module assembly and as above power supply box for the display screen, be equipped with on the display module assembly with the power connecting seat of power connector looks adaptation, the power connector of power supply box for the display screen with power connecting seat adaptation on the display module assembly and realize electric connection.

According to the above technical scheme, the utility model discloses an advantage lies in with positive effect:

the utility model provides a power supply box for display screen is equipped with power connector on the leading flank of preceding shell including dismantling the preceding shell and the back lid of connection to be used for with the display module assembly electric connection of display screen, and then realize display module assembly and display screen power module's electric connection. The power supply box can be independent of the display screen frame, so that the structure of the display screen frame is simplified, and the structure of the display screen is simplified.

Furthermore, the periphery of the front shell is provided with mounting holes, and the mounting screws correspond to the mounting holes, so that the power supply box and the display screen frame are detachably connected, and the power supply box and the display screen frame are simple and convenient to mount.

Drawings

Fig. 1 is a schematic structural diagram of one direction of the power supply box of the present invention.

Fig. 2 is a schematic structural diagram of the power supply box in fig. 1 in another direction.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an enlarged view at B in fig. 2.

Fig. 5 is an exploded view of the power supply box.

FIG. 6 is a schematic structural diagram of a power box and a display module.

Fig. 7 and 8 are schematic structural diagrams of the power box and the display screen frame in different directions, respectively.

Fig. 9 is a schematic view showing a positional relationship between the mounting screw and the mounting hole.

Fig. 10 is a schematic view showing a positional relationship in which the mounting screws are inserted into the mounting holes and the connecting holes.

The reference numerals are explained below: 1. a power supply box; 11. a box body; 111. a rear cover; 112. a front housing; 113. a seal ring; 114. mounting holes; 1141. a passing portion; 1142. a housing part; 115. a power supply connector; 116. a positioning column; 117. positioning pins; 12. mounting screws; 121. a nut; 1211. a hinge portion; 1212. a transition section; 1213. an operation slot; 122. a connecting rod; 123. a screw; 124. a handle;

2. a display screen frame; 21. connecting holes; 22. positioning holes;

3. a display module; 31. a power supply connecting seat.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings.

The utility model provides a display screen, its structure is simpler, and the equipment is simple and convenient.

The display screen comprises a display screen frame, a display module and a power box.

For convenience of description, the display screen is used in a standing state as a reference, and the direction of the display screen facing the user is the front, and the direction of the display screen facing away from the user is the back.

The display screen frame is approximately square and used for installing the display module and the power box.

A plurality of positioning holes and a plurality of connecting holes are arranged on the display screen frame at intervals. The positioning hole is used for achieving a positioning function between the display screen frame and the power supply box, and the connecting hole is used for achieving connection between the display screen frame and the power supply box. Wherein, the inner ring of the connecting hole is provided with an inner connecting thread.

Specifically, the plurality of positioning holes and the plurality of connecting holes are formed in one-step machining mode, so that the positioning accuracy and the dismounting efficiency of the display screen frame and the power supply box are improved.

The display module is arranged in front of the display screen frame. The display module is provided with a power supply connecting seat facing to the rear side. In this embodiment, the power connection seat is a female terminal connector, specifically, a row of female terminals. In other embodiments, the power connection seat may also be a male end connector, specifically a pin header.

In this embodiment, the display module can be an LED display module, and the display screen is an LED display screen.

The power supply box is arranged behind the display screen frame and is electrically connected with the display module to supply power to the display module.

The power box is of an independent structure and can be detachably connected with the display screen frame, so that the structure of the display screen frame is relatively simple, namely the structure of the display screen is simple, and the power box and the display screen frame are simple to install.

Fig. 1 and 2 respectively show structural schematic diagrams of the power supply box in different directions, and fig. 5 shows an exploded view of the power supply box, and in combination with fig. 1, 2 and 5, the power supply box 1 comprises a box body 11 and a plurality of mounting screws 12.

Specifically, the cartridge 11 includes a front case 112 and a rear cover 111 detachably coupled. When the power supply box 1 is installed with the display screen frame 2, the front shell 112 is close to the display screen frame 2.

The front shell 112 and the rear cover 111 are matched in size, and when the two are connected, an accommodating cavity for accommodating the display screen power supply module is formed inside the two. In this embodiment, the display screen power module includes a printed circuit board and a transformer. The front case 112 and the rear cover 111 are detachably coupled by a fastener. Specifically, in the present embodiment, a plurality of first bolt holes are opened on the periphery of the front housing 112, a plurality of second bolt holes are opened on the periphery of the rear cover 111, and the axes of the first bolt holes and the second bolt holes extend in the front-rear direction. The fasteners are simultaneously inserted into the first bolt holes and the second bolt holes to detachably couple the front case 112 and the rear cover 111.

Wherein, the rear side of the front housing 112 is further provided with two positioning posts 116, the two positioning posts 116 protrude towards the rear side, the two positioning posts 116 are symmetrically arranged, the front side of the rear cover 111 is provided with a positioning slot, and the opening of the positioning slot faces towards the front. The positioning post 116 is inserted into the positioning groove to realize the positioning between the front housing 112 and the rear cover 111.

Specifically, the diameter of the positioning post 116 gradually increases from back to front. In this embodiment, the positioning post 116 includes a front end portion, a rear end portion and a receiving portion connecting the front end portion and the rear end portion, wherein the rear end portion is in a spherical crown shape and is convenient to be inserted into the positioning groove. The front end of the positioning post 116 is columnar, and the receiving part is truncated cone-shaped.

A plurality of mounting posts protruding rearward are also provided on the rear side of the front case 112 for mounting the printed circuit board and the transformer.

The front side of the front shell 112 is provided with a power connector 115 for electrically connecting with the display module 3 of the display screen, so as to electrically connect the display module 3 with the display screen power module. The power connector 115 is used for matching with the power connecting socket 31 of the display module 3 to realize electrical connection. In this embodiment, the power connector 115 is a male connector, specifically a pin header. In other embodiments, power connector 115 may also be a female connector, specifically a female row.

Specifically, in this embodiment, two power connection holes are formed on the front shell 112, and a power connector 115 adapted to the size and shape of the power connection hole is correspondingly installed in each of the two power connection holes. The rear side of the power connector 115 is electrically connected to the display screen power module in the accommodating cavity, and the front side thereof protrudes forward to be exposed out of the power connection hole.

Fig. 6 shows a schematic view of the power box 1 and the display module 3, and referring to fig. 6, the two power connectors 115 of the power box 1 are inserted into the two power connection sockets 31 of the display module 3, so as to achieve the electrical connection between the power box 1 and the display module 3.

The periphery of the front shell 112 is provided with a plurality of mounting holes 114 at intervals, and the plurality of mounting holes 114 are located at the periphery of the accommodating cavity. The axis of each mounting hole 114 extends in the front-rear direction and penetrates in the front-rear direction. Specifically, the front case 112 has a mounting hole 114 opened at a portion of its periphery beyond the rear cover 111.

In this embodiment, the two sides of the top of the front case 112 have mounting portions protruding upward to extend the rear cover 111, the middle of the bottom of the front case 112 has two mounting portions protruding downward, and the mounting holes 114 are opened on the mounting portions of the front case 112, that is, the number of the mounting holes 114 is four. In this embodiment, the area enclosed by the four mounting holes 114 is a trapezoid, and the upper bottom edge is larger than the lower bottom edge. In other embodiments, the number and distribution of the mounting holes 114 can be set according to practical situations.

Specifically, the mounting hole 114 includes a passing portion 1141 and a receiving portion 1142 arranged along its own axial direction, and the passing portion 1141 communicates with the receiving portion 1142.

An internal thread is annularly arranged on the inner peripheral wall of the passing part 1141.

The receiving portion 1142 is located in front of the passing portion 1141, i.e., the receiving portion 1142 is close to the display frame 2. The aperture of the receiving portion 1142 is larger than the aperture of the passing portion 1141.

Further, a plurality of positioning pins 117 are disposed on the front side surface of the front housing 112 in a protruding manner, and the positioning pins 117 are disposed at intervals for matching with the positioning holes 22 on the display screen frame 2.

Specifically, the positioning pin 117 is provided on the front case 112 and protrudes forward. In this embodiment, the positioning pin 117 is disposed in the middle of the front shell 112, and two positioning pins 117 are disposed at intervals in the vertical direction. Correspondingly, two positioning holes 22 are formed in the beam of the display screen frame 2 in the middle.

The diameter of each positioning pin 117 gradually increases from front to back. In this embodiment, the positioning pin 117 includes a front section, a rear section and a middle section connecting the front section and the rear section, wherein the front section is in a spherical crown shape and is convenient to be inserted into the positioning hole 22, the rear section is in a cylindrical shape, and the middle section is in a circular truncated cone shape.

When the power supply box 1 is connected with the display screen frame 2, the two positioning pins 117 are correspondingly inserted into the positioning holes 22 one by one, so that the power supply box 1 and the display screen frame 2 are positioned.

A sealing ring 113 is further disposed between the front shell 112 and the rear cover 111 to seal the accommodating cavity. The box body 11 also comprises a sealing ring 113, and the sealing effect of the sealing ring 113 can realize the sealing performance of the accommodating cavity, prevent water flow from entering the accommodating cavity, and further enable the power supply box 1 to be applicable to the outdoors.

In this embodiment, the seal ring 113 is located on the periphery of the front case 112 and the rear cover 111, and has substantially the same shape as the front case 112 and the rear cover 111.

The plurality of mounting screws 12 are provided in one-to-one correspondence with the plurality of mounting holes 114 for detachably connecting the box body 11, i.e., the front case 112 and the rear cover 111, with the display screen frame 2. Fig. 7 and 8 are schematic structural diagrams of the power supply box 1 and the display screen frame 2 in different directions from the front and the back, respectively, and referring to fig. 7 and 8, the mounting screws 12 are used for connecting the power supply box 1 and the display screen frame 2 in front.

In the present embodiment, the number of the mounting screws 12 is four. In other embodiments, the number of mounting screws 12 may be set according to actual needs.

Specifically, the mounting screw 12 includes a connecting rod 122, a screw 123 and a nut 121 arranged at both ends of the connecting rod 122.

The outer circumference of the connecting rod 122 is not threaded, and the diameter of the connecting rod 122 is smaller than the aperture of the passing portion 1141 of the mounting hole 114. In this embodiment, the outer circumference of the connecting rod 122 is smooth.

The outer circumference of the screw 123 is provided with an external thread (not shown in the figures), and the external thread is adapted to the internal thread of the mounting hole 114 and the internal connection thread of the connection hole 21, so that the screw 123 can pass through the mounting hole 114 by rotating to enable the front shell 112 to be sleeved on the periphery of the connection rod 122, and the screw 123 can be inserted into the connection hole 21 to realize the screw connection between the mounting screw 12 and the display screen frame 2, thereby realizing the connection between the power supply box 1 and the display screen frame 2.

And when the mounting screw 12 is positioned in the mounting hole 114, the screw rod 123 is close to the display screen frame 2, i.e. the screw rod 123 is positioned in front of the screw cap.

The diameter of the screw 123 is larger than that of the connecting rod 122, and the diameter of the nut 121 is larger than that of the mounting hole 114, so that the screw 123 restricts forward movement of the mounting screw 12, the nut 121 restricts backward movement of the mounting screw 12, and the mounting screw 12 is restricted from falling off from the front case 112, thereby preventing the mounting screw 12 from falling off. Therefore, when the power supply box 1 and the display screen frame 2 are installed, the installation screws 12 do not need to be found everywhere, time is saved, and installation efficiency is improved.

The diameter of the screw 123 is smaller than the diameter of the receiving portion 1142 of the mounting hole 114, and is adapted to the diameter of the passing portion 1141 of the mounting hole 114. Therefore, the mounting screw 12 passes through the passing portion 1141 of the mounting hole 114 by rotation, and can be accommodated in the accommodating portion 1142 or extended out of the accommodating portion 1142, so that the mounting screw 12 can move in the front-rear direction.

Further, the mounting screw 12 further includes a handle 124 rotatably coupled to the nut 121. Fig. 3 and 4 are schematic structural views respectively illustrating different states of the handle 124, and referring to fig. 3 and 4, the handle 124 can be rotated to be attached to the outer periphery of the nut 121 for being folded, or rotated to be erected for being operated by an operator.

Specifically, the nut 121 is circular, the handle 124 is semicircular, and the concave surface of the handle 124 faces the nut 121. The inner diameter of the handle 124 is adapted to the outer diameter of the nut 121.

The handle 124 is pivotally connected to the nut 121 at both ends by hinges. In this embodiment, the handle 124 is connected to the nut 121 by a rotating shaft.

The handle 124 can be rotated to be perpendicular to the connecting rod 122 and attached to the periphery of the nut 121 or to be parallel to the connecting rod 122 and protrude out of the nut 121 to be in a standing state, and when the nut 121 is in the standing state, the handle can be manually rotated by an operator and drives the connecting rod 122 and the screw 123 to rotate, so that the power supply box 1 and the display screen frame 2 can be installed.

By designing the handle 124, the power supply box 1 and the display screen frame 2 can be mounted without using an operation tool.

An operation slot 1213 is provided on a surface of the nut 121 remote from the screw 123, and an opening of the operation slot 1213 faces in a direction away from the screw 123 for engagement with an operation tool.

Specifically, the operation slot 1213 has a line shape, a cross shape, or a quincunx shape.

That is, the mounting screw 12 can be mounted by an operating tool, and also can be mounted by rotating the handle 124 without using an operating tool.

The nut 121 further includes a hinge portion 1211 and a transition portion 1212 disposed along its own axis.

The transition portion 1212 is connected to the connecting rod 122, and a diameter of the transition portion 1212 is larger than a diameter of the connecting rod 122, and a diameter of the transition portion 1212 is smaller than an aperture of the passing portion 1141 of the mounting hole 114.

The diameter of the hinge 1211 is greater than the diameter of the transition portion 1212. The hinge portion 1211 is hingedly connected to the handle 124, i.e., the handle 124 is connected to the hinge portion 1211.

The structure of dividing the nut 121 into the hinge portion 1211 and the transition portion 1212 not only facilitates the installation of the handle 124, but also reduces the space occupied by the nut 121.

Referring to fig. 8, the installation of the power supply box 1 and the display screen frame 2 is described as follows:

s1, the box 11 is placed behind the display screen frame 2, and then the positioning pin 117 is inserted into the positioning hole 22.

When the positioning pin 117 is inserted into the positioning hole 22, the display screen frame 2 is brought close to the case 11, and at this time, the screw 123 of the mounting screw 12 is moved backward and accommodated in the accommodating portion 1142 of the mounting hole 114, as shown in fig. 9.

Since the positioning hole 22 and the connection hole 21 on the display screen frame 2 are formed by one-step machining, after the positioning pin 117 and the positioning hole 22 are positioned, the mounting hole 114 of the power supply box 1 corresponds to the connection hole 21, and the positioning accuracy and the assembling and disassembling efficiency are improved.

S2, the handle 124 is manually turned or the mounting screws 12 are rotated by an operating tool, so that the screws 123 of the mounting screws 12 are screwed with the display screen frame 2, and after all the mounting screws 12 are operated, the power supply box 1 and the display screen frame 2 are mounted.

The screw 123 enters the coupling hole 21 by rotating and is screwed with the inner circumferential wall of the coupling hole 21, as shown in fig. 10.

The mounting screw 12 in this embodiment is not only connected to the case 11 and not easily detached, but also has a handle 124 to enable mounting without an operating tool.

In other embodiments, the mounting screw 12 of the power supply box 1 may only have a function of being connected to the front housing 112 and not being easily detached, that is, the mounting screw 12 includes a connecting rod 122, a threaded rod 123 and a nut 121, and an operating slot 1213 for operating an operating tool is disposed on a surface of the nut 121 away from the threaded rod 123. The diameter of the nut 121 is greater than the diameter of the mounting hole 114, the diameter of the screw 123 is greater than the diameter of the connecting rod 122, an external thread is annularly arranged on the outer periphery of the screw 123, the external thread is matched with the internal thread, the screw and the mounting hole 114 rotate to penetrate through the mounting hole 114, the front shell 112 is sleeved on the outer periphery of the connecting rod 122, and the screw 123 is in threaded connection with the display screen frame 2.

The mounting screw 12 of the power supply box 1 may also have only a function of mounting without an operating tool, that is, the mounting screw 12 includes a screw 123, a nut 121, and a handle 124, and the screw 123 is used for screwing with the display screen frame 2. The handle 124 is rotatably connected to the nut 121, so that the handle 124 can be rotated to be perpendicular to the screw 123 and attached to the outer circumference of the nut 121 or to be parallel to the screw 123 and protrude out of the nut 121 to rotate and drive the screw 123 to rotate.

the utility model provides a power supply box for display screen is equipped with power connector on the leading flank of preceding shell including dismantling the preceding shell and the hou gai of connection to be used for with the display module assembly electric connection of display screen, and then realize display module assembly and display screen power module's electric connection. The power supply box can be independent of the display screen frame, so that the structure of the display screen frame is simplified, and the structure of the display screen is simplified.

Furthermore, the periphery of the front shell is provided with mounting holes, and mounting screws of the power supply box correspond to the mounting holes, so that the power supply box is detachably connected with the display screen frame, and the power supply box and the display screen frame are simple and convenient to mount.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. The utility model provides a power supply box for display screen, its characterized in that, is including dismantling preceding shell and the back lid of connection, preceding shell with back lid size adaptation, and both are formed with the holding chamber that is used for holding display screen power module in both insides when linking to each other, be equipped with power connector on the leading flank of preceding shell for be used for with the display module assembly electric connection of display screen, and then realize the display module assembly with the electric connection of display screen power module.

2. The power supply box for the display screen according to claim 1, wherein a plurality of mounting holes are arranged at intervals on the periphery of the front shell, and the mounting holes are arranged on the periphery of the accommodating cavity;

the power pack includes a plurality of mounting screws, and is a plurality of mounting screws and a plurality of mounting hole one-to-one sets up for with preceding shell can be dismantled with the display screen frame and be connected.

3. The power supply box for the display screen according to claim 2, wherein an inner thread is annularly arranged on the inner peripheral wall of the mounting hole;

4. The power supply box for the display screen according to claim 3, wherein the mounting hole comprises a passing portion and an accommodating portion, the passing portion and the accommodating portion are arranged along the axis direction of the mounting hole, the passing portion is communicated with the accommodating portion, the internal thread is arranged on the inner peripheral wall of the passing portion, the caliber of the accommodating portion is larger than the diameter of the screw, and the accommodating portion is close to the display screen frame.

5. The power supply box for display screen according to claim 2, wherein the mounting screw comprises a screw, a nut and a handle, the screw is used for being screwed with the display screen frame, the handle is rotatably connected with the nut, so that the handle can be rotated to be perpendicular to the screw and attached to the periphery of the nut or parallel to the screw and protrude out of the nut, and can be rotated to drive the screw to rotate.

6. The power pack for display screen of claim 5, wherein the screw cap is circular, the handle is semicircular, and a concave surface of the handle faces the screw cap.

7. The power supply box for display screen according to claim 5, wherein the nut has an operation slot on a surface thereof away from the screw, an opening of the operation slot facing away from the screw for engagement with an operation tool;

8. The power pack for display screen of claim 3, wherein the mounting screw further comprises a handle rotatably coupled to the nut;

the nut comprises a hinge part and a transition part, wherein the hinge part and the transition part are arranged along the axis direction of the nut, the diameter of the hinge part is larger than that of the transition part, the transition part is connected with the connecting rod, the diameter of the transition part is larger than that of the connecting rod, and the hinge part is hinged with the handle.

9. The power supply box for the display screen according to claim 1, wherein a plurality of positioning pins are arranged at intervals on the front side surface of the front shell, and each positioning pin protrudes forwards out of the front side surface of the front shell for matching with a positioning hole on the display screen frame;

a sealing ring is further annularly arranged between the front shell and the rear cover of the power connector to seal the accommodating cavity.

10. A display screen is characterized by comprising a display screen frame, a display module and the power supply box for the display screen as claimed in any one of claims 1 to 9, wherein the display module is provided with a power supply connecting seat matched with the power supply connector, and the power supply connector of the power supply box for the display screen is matched with the power supply connecting seat on the display module to realize electrical connection.