CN219917834U - Switching device and display screen - Google Patents

Abstract

The utility model relates to the technical field of display screens, and provides a switching device and a display screen, wherein the switching device comprises: a power supply; the receiving card is electrically connected with the power supply; the connecting piece is electrically connected with the power supply; the connecting piece is provided with a first connecting interface and a second connecting interface, the first connecting interface is positioned on a first side wall of the connecting piece, the second connecting interface is positioned on a second side wall of the connecting piece, and the first side wall and the second side wall are two side walls of the connecting piece which are mutually perpendicular; the first connection interface is used for electric signal to plug in the module unit of the display screen, and the second connection interface is used for signal to plug in the receiving card. According to the switching device and the display screen, the number of interfaces for connecting the module units of the display screen can be reduced, the difficulty in connecting and disassembling the module units is reduced, the degree of freedom of the size design of each module unit is improved, and therefore the application range of the LED display screen is enlarged.

Description

Switching device and display screen

Technical Field

The present utility model relates to the field of display technologies, and in particular, to a switching device and a display.

Background

A light-emitting diode (LED) display screen is usually installed and connected with a plurality of module screens, and the module screens are adsorbed on a steel structure, so that an integral display is formed. When the module screen is spliced, the module screen is required to be connected with the signal line through the power line, so that display is realized. But every module on an LED display screen all needs cable connection power and receiving card, in the dismantlement maintenance of module, need demolish power cord and signal line, dismantlement maintenance inefficiency.

In the related art, all connecting wires of the LED screen body are integrated in the box body or in the module through a hard connection design mode, wire connection is not needed during installation, the module or the box body is only needed to be plugged in according to an interface, the constraint of the connecting wires can be reduced, and the installation efficiency is improved.

However, in the related art, the size of the LED display screen needs to be designed according to the minimum unit module size, which limits the application of the LED display screen.

Disclosure of Invention

The utility model provides a switching device and a display screen, which are used for solving the defect that the application of the LED display screen is limited due to the fact that the size of a screen body of the LED display screen is limited in the hard connection mode in the prior art, reducing the number of interfaces for connecting module units of the display screen, reducing the difficulty for connecting and disassembling the module units, and improving the degree of freedom of the size design of each module unit, thereby improving the application range of the LED display screen.

The utility model provides a switching device, comprising:

a power supply;

a receiving card electrically connected to the power supply;

the connecting piece is electrically connected with the power supply; the connecting piece is provided with a first connecting interface and a second connecting interface, the first connecting interface is positioned on the first side wall of the connecting piece, and the second connecting interface is positioned on the second side wall of the connecting piece; the first side wall and the second side wall are two side walls of the connecting piece, which are perpendicular to each other, the first connecting interface is used for plugging the module unit of the display screen with the electric signal, and the second connecting interface is used for plugging the receiving card with the signal.

According to the switching device provided by the utility model, the receiving card is provided with a plurality of signal output terminals, the number of the connecting pieces is smaller than or equal to that of the signal output terminals, and one connecting piece is correspondingly connected with one signal output terminal in a signal mode.

According to the switching device provided by the utility model, the switching device further comprises a signal transmission line, one end of the signal transmission line is inserted into the second connection interface, and the other end of the signal transmission line is in signal connection with the signal output terminal.

According to the switching device provided by the utility model, the connecting piece is further provided with the third connecting interface, the switching device further comprises the first power supply line, one end of the first power supply line is fixed in the third connecting interface through the fixing piece, and the other end of the first power supply line is electrically connected with the power supply.

According to the switching device provided by the utility model, the first connecting port comprises a plurality of pin openings which are arranged side by side, the pin openings are used for inserting plug connectors, the plug connectors are plug connectors of electric signal transmission lines, and the electric signal transmission lines are used for electric signal connection with the module unit.

According to the utility model, there is provided a switching device, which further comprises: the power supply, the receiving card and the connecting piece are all arranged on the supporting piece.

According to the switching device provided by the utility model, the supporting piece is an aluminum plate, a copper plate or an iron plate.

According to the switching device provided by the utility model, the connecting piece is detachably connected to the supporting piece.

According to the switching device provided by the utility model, one of the supporting piece and the connecting piece is provided with the buckle, the other one of the supporting piece and the connecting piece is provided with the clamping groove, and the buckle is clamped in the clamping groove to fix the connecting piece.

The utility model also provides a display screen comprising the switching device according to any one of the previous embodiments of the utility model.

The utility model provides a switching device and a display screen, wherein the switching device is electrically connected with a power supply by arranging a connecting piece, and in addition, a first connecting interface and a second connecting interface are arranged on the connecting piece and are arranged on two mutually perpendicular side walls of the connecting piece; thus, the second connector can be connected with the receiving card in a signal plugging manner, and the first connector can be connected with the module unit of the display screen in an electric signal plugging manner. The interface of the power supply and the interface (namely the second interface) of the receiving card can be integrated on the connecting piece, so that when the module unit of the display screen is spliced, the power supply line and the signal transmission line of the module unit of the display screen can be directly connected with the first connecting interface on the connecting piece, which is equivalent to integrating the power supply line and the signal transmission line of the module unit together, thus, the flexible connection mode in the related art is compared, the flexible connection mode can avoid the disorder of cables, and the splicing and the dismounting of the module unit can be facilitated, and the efficiency of installation and dismounting is improved. Compared with the hard connection mode in the related art, the size of a single module unit is not limited, and the degree of freedom of the size design of each module unit is improved, so that the application range of the LED display screen is improved. In addition, the power supply and the receiving card do not need to be changed, and compared with a hard connection mode, the processing cost is saved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an overall structure of a switching device according to an embodiment of the present utility model;

FIG. 2 is a top view of an adapter according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a specific application scenario of the switching device according to the embodiment of the present utility model;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

fig. 7 is a schematic structural diagram of a module unit in a display screen matched with an electric signal transmission line according to an embodiment of the present utility model;

fig. 8 is a partially enlarged structural schematic diagram at D in fig. 7.

Reference numerals:

10: a switching device; 20: a module unit; 30: an electric signal transmission line;

110: a power supply; 120: receiving a card; 130: a connecting piece; 140: a signal transmission line; 150: a first power supply line; 160: a support; 310: a plug;

121: a signal output terminal; 131: a first connection interface; 132: a second connection interface; 133: a third connection interface; 134: a clamping groove; 161: a buckle; 311: a contact pin; 1311: a needle opening.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The LED display screen is a display screen formed by utilizing light emitting diodes to form a dot matrix module or a pixel unit, and has the characteristics of high reliability, long service life, strong environment adaptability, high cost performance, low use cost and the like, and is rapidly developed and widely applied to various information display fields.

Along with the popularization of LEDs, the demands for LED module screens are also increasing, the LED module screens are installed by directly installing modules on a supporting frame of a steel structure, each module on one LED screen is connected with a power supply and a receiving card through cables, and the power supply wires and the signal wires are behind the LED display screen body, so that the flatness of the LED screen body can be affected. In addition, the disassembly and maintenance of the modules need to disassemble a large number of power lines and signal lines (each LED module needs a plurality of signal cables and power supply cables), so that the problems of low disassembly and installation efficiency exist, and certain potential safety hazards exist.

Therefore, in the related art, all connecting wires of the LED screen body are integrated in the box body or the module, wire connection is not needed during installation, and only the module or the box body is plugged according to the interface, so that the constraint of the connecting wires can be reduced, and the installation efficiency is improved. So-called hard-wired.

The hard connection is usually required to design an independent circuit board, the design cost of the circuit board is high, in addition, the design flexibility of the circuit board is low, the module of the minimum unit is required to be formed by splicing a plurality of display screen module modules or display screen module units, the size of the LED display screen body is required to be designed according to the size of the minimum unit module, and the application of the LED display screen is limited.

Fig. 1 is a schematic overall structure of an adapting device according to an embodiment of the present utility model, fig. 2 is a top view of the adapting device according to an embodiment of the present utility model, and fig. 3 is a partial enlarged view at a in fig. 2.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a switching device 10, including: a power supply 110, a receiving card 120, and a connector 130.

Specifically, in the embodiment of the present utility model, the power supply 110 may be fixed on a steel bracket at the rear side or the inner side of the LED display screen. The power supply 110 can be connected with a power supply circuit through a wire, so that after the conversion of the power supply 110, the power supply is performed on the receiving card 120 and the LED lamp, and the display of the LED display screen is ensured. In a specific arrangement, the power supply 110 may be the same as the power supply 110 of the LED module unit 20 connected in a flexible connection manner in the related art. That is, the switching device 10 provided in the embodiment of the present utility model can not change the power supply 110 of the LED display screen in the flexible connection manner, so that the design and processing costs can be saved.

In the embodiment of the present utility model, the receiving card 120 is configured to receive a control instruction transmitted by an upper computer (for example, a computer or a computer, etc.), decode the control instruction, and then control the on/off of different LED lamps, so as to display different contents on the LED screen. The receiver card 120 may also be secured to a steel structural support when specifically provided. In addition, in the embodiment of the present utility model, the receiving card 120 may also adopt a receiving card 120 in a soft connection manner in the related art, that is, the receiving card 120 is not changed in the embodiment, so that design and processing costs can be saved. It will be appreciated that in embodiments of the present utility model, the receiver card 120 is electrically connected to the power source 110. Specifically, referring to fig. 1 and 2, the receiving card 120 may be electrically connected to the power source 110 through a wire or a connection line.

In addition, in the embodiment of the present utility model, referring to fig. 1 and 2, the connection member 130 may be electrically connected to the power source 110 through a wire or a connection line. With continued reference to fig. 1 and 2, the connector 130 may also be in signal connection with the receiver card 120 via a wire array.

Specifically, in the embodiment of the present utility model, the connection member 130 is provided with a first connection interface 131 and a second connection interface 132, where, referring to fig. 3, the first connection interface 131 may be disposed on a first side wall (such as a top wall shown in fig. 1) of the connection member, and the second connection interface 132 may be disposed on a second side wall (such as a vertical wall shown in fig. 1) of the connection member 130. The first connection interface 131 may be used for plugging the module unit 20 of the display screen with an electrical signal, and the second connection interface 132 may be used for plugging the receiving card 120 with a signal.

That is, in the embodiment of the present utility model, the signal of the receiving card 120 may be transmitted to the connection 130 (for example, the signal is transmitted to the second connection interface 132 through the signal transmission line), and the current of the power source 110 may also be transmitted to the connection 130. That is, the connection 130 is provided to integrate the current output interface of the power supply 110 and the signal output terminal 121 of the receiving card 120 on one component.

Fig. 4 is a schematic structural diagram of a specific application scenario of the switching device according to the embodiment of the present utility model.

Taking a specific application scenario as an example for illustration, since the connector 130 is signal-connected with the receiving card 120 in the embodiment of the present utility model, the output signal of the receiving card 120 can be transmitted to the connector 130; in addition, the connection 130 is electrically connected to the power source 110, and the power supply current of the power source 110 may be transmitted to the connection 130, i.e., the connection 130 integrates the signal transmission interface of the receiving card 120 and the power supply interface of the power source 110 on one component. When the splice module unit 20 is required to be installed, referring to fig. 4, the module unit 20 may be connected to the first connection interface 131 on the connection member 130 through a row of wires, thereby simultaneously supplying power and transmitting signals to the module unit 20 through the first connection interface 131. The power supply cable and the signal cable of the module unit 20 are integrated together, and are not required to be connected with the power supply 110 and the receiving card 120 respectively, so that the wiring/routing of the power supply cable and the signal cable is reduced, mess of cables can be avoided, splicing and disassembly of the module unit 20 can be facilitated (only one-time connection with the first connecting interface 131 of the connecting piece 130 is needed), and the efficiency of installation and disassembly is improved.

In addition, since the module units 20 and the connecting members 130 are connected in a flexible connection manner, there is an advantage in the related art that the size of the single module unit 20 is not limited, and the degree of freedom of the size design of each module unit 20 is improved, thereby improving the application range of the LED display screen. In addition, no change is required to the power supply 110 and the receiving card 120, and processing cost is saved compared with a hard connection mode.

The switching device 10 provided by the utility model is characterized in that a connecting piece 130 is arranged, the connecting piece 130 is electrically connected with a power supply 110, a first connecting interface 131 and a second connecting interface 132 are arranged on the connecting piece, and the first connecting interface 131 and the second connecting interface 132 are arranged on two mutually perpendicular side walls of the connecting piece 130; thus, the second connection port 131 can be plugged into the receiving card 120 through signals, and the first connection port 131 can be plugged into the module unit 20 of the display screen through electrical signals. The interface of the power supply 110 and the interface of the receiving card 120 (i.e. the second interface 132) can be integrated onto the connecting piece 130, so that the interface of the power supply 110 and the interface of the receiving card 120 can be integrated onto the connecting piece 130, when the module unit 20 of the display screen is spliced, the power supply line and the signal transmission line 140 of the module unit 20 of the display screen can be directly connected with the first connecting interface 131 on the connecting piece 130, which is equivalent to integrating the power supply line and the signal transmission line 140 of the module unit 20 together. Compared with the hard connection mode in the related art, the size of the single module unit 20 is not limited, and the degree of freedom of the size design of each module unit 20 is improved, so that the application range of the LED display screen is improved. In addition, no change is required to the power supply 110 and the receiving card 120, and processing cost is saved compared with a hard connection mode.

In an alternative example of the embodiment of the present utility model, referring to fig. 1, 2 and 4, the receiving card 120 has a plurality of signal output terminals 121, the number of the connection members 130 is less than or equal to the number of the signal output terminals 121, and one connection member 130 is signal-connected with each signal output terminal 121.

That is, in the embodiment of the present utility model, the number of the connection members 130 may be set specifically according to the output specification (the number of the signal output terminals 121) of the receiving card 120, for example, in some specific examples, the number of the connection members 130 may be 26 or 24 or the like. The number of the connection members 130 is 6 in the drawings of the present embodiment as a specific example. It should be understood that, in the embodiments of the present utility model, the number of the connectors 130 shown in the foregoing examples is only shown as some specific examples, and the number of the connectors 130 is not limited.

In some alternative examples, the number of the connectors 130 may also be determined according to the number of the module units 20 to be spliced by the LED display screen body.

In the embodiment of the utility model, the number of the connecting pieces 130 is set to be smaller than or equal to the number of the signal output terminals 121, so that the receiving card 120 can effectively control each spliced unit module, and the integrity of the display of the LED display screen body is ensured.

In an alternative example of the embodiment of the present utility model, with continued reference to fig. 1, the switching device 10 further includes a signal transmission line 140, where one end of the signal transmission line 140 is inserted into the second connection interface 132, and the other end of the signal transmission line 140 is signal-connected to the signal output terminal 121.

Specifically, referring to fig. 1, in an embodiment of the present utility model, the signal transmission line 140 may be a line bank. One end of the wire row is inserted into the second connection interface 132. When specifically setting up, can set up shell fragment or inject in second connection interface 132, the line is arranged and is fixed in second connection interface 132 through shell fragment or contact pin 311, like this, can guarantee the stability that signal transmission line 140 is connected with connecting piece 130 to guarantee the stability that receiving card 120 passes through connecting piece 130 to the transmission control signal of module unit 20, guaranteed the stability that the LED display screen shows promptly.

In addition, in the embodiment of the present utility model, referring to fig. 1, a plug terminal may be provided at the other end of the signal transmission line 140, and the signal transmission line 140 may be plugged with the signal output terminal 121 through the plug terminal.

In another alternative example of the embodiment of the present utility model, with continued reference to fig. 1, the connecting member 130 is further provided with a third connection interface 133, and the switching device 10 further includes a first power supply line 150, where one end of the first power supply line 150 is fixed in the third connection interface 133 through a fixing member, and the other end of the first power supply line 150 is electrically connected to the power supply 110.

Specifically, in the embodiment of the present utility model, the fixing member may be a screw, a screw rod, or the like; in some examples, the fastener may also be a rivet. That is, in the embodiment of the present utility model, the first power supply line 150 may be fixed in the third connection interface 133 by the fixing connector 130 such as a screw, or a screw rod. In this way, the stability of connection between the first power supply line 150 and the connecting piece 130 can be ensured, the first power supply line 150 can be effectively placed in the process of transportation and installation of the switching device 10, and the overall reliability of the switching device 10 is ensured. It can be appreciated that, in the foregoing example, the connection manner of the other end of the first power supply line 150 and the power supply 110 may be referred to specifically, and in the embodiment of the present utility model, the description is omitted.

Fig. 5 is a sectional view taken along line B-B in fig. 2, and fig. 6 is a partially enlarged view at C in fig. 5.

Referring to fig. 5 and 6, in an alternative example of the embodiment of the present utility model, the first connection port includes a plurality of needle ports 1311 arranged side by side, and the needle ports 1311 are used to insert the socket 310.

Fig. 7 is a schematic structural diagram of a module unit in a display screen and an electrical signal transmission line in cooperation with each other according to an embodiment of the present utility model, and fig. 8 is a schematic partial enlarged structural diagram of a portion D in fig. 7.

Specifically, referring to fig. 7 and 8, the module unit 20 is generally connected to the power source 110 and the receiving card 120 through transmission cables (including a signal transmission cable 140 and a power supply cable). In the embodiment of the present utility model, the connection interfaces of the power source 110 and the receiving card 120 are integrated onto the connection member 130, that is, the module unit 20 is connected to the connection member 130 through the electrical signal transmission line 30. Therefore, in the embodiment of the present utility model, the plug 310 is the plug 310 of the electrical signal transmission line 30 (i.e. the transmission cable in the foregoing example, including the power supply cable and the signal transmission cable), and the electrical signal transmission line 140 may be electrically connected to the module power supply 110. Referring to fig. 8, a plurality of pins 311 arranged side by side may be provided on the socket 310, and the plurality of pins 311 arranged side by side are inserted into the pin holes 1311 arranged side by side.

In a specific arrangement, a metal spring may be disposed in the pin hole 1311, and after the pin 311 is inserted into the pin hole 1311, the pin 311 contacts with the metal spring, or it may be understood that the metal spring abuts against the pin 311, so as to realize electrical signal connection between the plug 310 and the connector 130.

That is, in the embodiment of the present utility model, after the socket 310 is docked with the connector 130, the signal transmission cable in the electrical signal transmission line 30 is connected with the connector 130 in a signal manner, so that the control signal of the receiving card 120 is transmitted to the module unit 20, and the LED lamp in the module unit 20 is controlled to be turned on or off; the power supply cable in the electric signal transmission line 30 is electrically connected to the connection member 130, and the power supply 110 supplies power to the LED lamp in the module unit 20 through the connection member 130 and the power supply cable. Thus, the power supply cable and the signal transmission cable of the module unit 20 are integrated together, and the connection assembly can be completed by only plugging with one connecting piece 130, so that the mounting and dismounting efficiency of the LED display screen body is improved. In addition, the cables of the LED display screen body cannot be disordered, and the flatness of the LED display screen body cannot be affected.

As an alternative example of the embodiment of the present utility model, referring to fig. 1 and 2, the adapting device 10 further includes: the support 160, the power source 110, the receiving card 120 and the connecting member 130 are all disposed on the support 160.

Specifically, in the embodiment of the present utility model, referring to fig. 1 and 2, the supporting member 160 may be a plate-like or sheet-like structure, so that the power source 110, the receiving card 120, and the connection member 130 may be disposed on the supporting member 160, thereby forming an integrated unitary structure. Like this, on the one hand be convenient for to the storage and the transportation of switching device 10, on the other hand, when installing concatenation LED display screen body, also can save the installation connect time of switching device 10, promoted the installation concatenation efficiency of LED display screen body. In particular installation, the support 160 may be installed and secured to the steel structural support raised in the previous embodiment of the present utility model, for example, by bolts, screws, etc. Of course, in some examples, the fixation may also be by way of magnetic attraction.

As a specific example, the support 160 is an aluminum plate, a copper plate, or an iron plate. It can be appreciated that the aluminum plate, the peer or the iron plate is a good conductor of heat, and in the embodiment of the utility model, the aluminum plate, the peer or the iron plate is used as the supporting member 160, so that when the LED screen works, the supporting member 160 can timely guide away and radiate the heat generated by the power supply 110 and the receiving card 120, thereby improving the heat radiation performance of the power supply 110 and the receiving card 120.

In an alternative example of an embodiment of the present utility model, the connection 130 is detachably connected to the support 160. Specifically, the connection member 130 may be detachably connected to the support member 160 by a connection member such as a bolt, a screw, or the like. Thus, when the overhaul and maintenance are needed, the connecting piece 130 is convenient to detach, and when the connecting piece 130 fails, the connecting piece 130 is convenient to replace.

As a specific example of the embodiment of the present utility model, referring to fig. 6, one of the supporting member 160 and the connecting member 130 is provided with a buckle 161, and the other of the supporting member 160 and the connecting member 130 is provided with a clamping groove 134, and the buckle 161 is clamped in the clamping groove 134 to fix the connecting member 130.

Specifically, referring to fig. 6, in the embodiment of the present utility model, a buckle 161 is provided on a support 160 as a specific example. In the installation, referring to fig. 6, pressure can be applied to the connection member 130 along the x direction in fig. 6, so that the connection member 130 can be conveniently connected with the support member 160, and the installation efficiency of the connection member 130 is improved. It will be appreciated that in some possible examples, the catch 161 may also be provided on the connector 130.

The present utility model also provides a display screen comprising the adapter device 10 provided by any of the alternative examples of the foregoing embodiments of the present utility model.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A switching device, comprising:

a power supply;

a receiving card electrically connected to the power supply;

the connecting piece is electrically connected with the power supply; the connecting piece is provided with a first connecting interface and a second connecting interface, the first connecting interface is positioned on the first side wall of the connecting piece, and the second connecting interface is positioned on the second side wall of the connecting piece; the first side wall and the second side wall are two side walls of the connecting piece, which are perpendicular to each other; the first connection interface is used for plugging the electric signal into the module unit of the display screen, and the second connection interface is used for plugging the signal into the receiving card.

2. The switching device according to claim 1, wherein the receiving card has a plurality of signal output terminals, the number of the connection pieces is smaller than or equal to the number of the signal output terminals, and one of the connection pieces is signal-connected with one of the signal output terminals.

3. The switching device according to claim 2, further comprising a signal transmission line, wherein one end of the signal transmission line is inserted into the second connection interface, and the other end of the signal transmission line is in signal connection with the signal output terminal.

4. The switching device according to claim 1, wherein a third connection interface is further provided on the connection member, the switching device further comprises a first power supply line, one end of the first power supply line is fixed in the third connection interface through a fixing member, and the other end of the first power supply line is electrically connected with the power supply.

5. The switching device according to claim 1, wherein the first connection interface comprises a plurality of pin openings arranged side by side, the pin openings are used for inserting plug connectors, the plug connectors are plug connectors of an electric signal transmission line, and the electric signal transmission line is used for electric signal connection with the module unit.

6. The adapter according to any one of claims 1-5, wherein the adapter further comprises: the power supply, the receiving card and the connecting piece are all arranged on the supporting piece.

7. The adapter according to claim 6, wherein the support is an aluminum plate, a copper plate, or an iron plate.

8. The adapter according to claim 6, wherein the connector is removably connected to the support.

9. The adapter according to claim 7, wherein one of the support member and the connecting member is provided with a buckle, and the other of the support member and the connecting member is provided with a clamping groove, and the buckle is clamped in the clamping groove to fix the connecting member.

10. A display screen comprising the switching device of any one of claims 1-9.