CN211427757U - Automatic LED display box body and LED display screen of separation - Google Patents

Abstract

The application relates to an automatically separated LED display box body and an LED display screen, wherein the LED display box body comprises a box body frame and at least one LED display module, the box body frame is provided with a mounting position, and the LED display module is arranged corresponding to the mounting position of the box body frame; the side, facing the box body frame, of the LED display module is provided with a magnet, the box body frame is correspondingly provided with an electromagnet, the electromagnet comprises an iron core, and the LED display module is fixedly connected with the box body frame through the magnetic adsorption effect between the magnet and the iron core; during front maintenance, the electromagnet is connected with a first current in a first current direction, the electromagnet generates a polarity which is the same as the polarity of the magnetic pole of the magnet facing one end of the electromagnet, and the electromagnet and the magnet generate mutually exclusive acting force to separate the LED display module from the box body frame. During the front maintenance, LED display module can not produce the deformation, can not touch the LED lamp pearl of display surface, can not produce any harmful effects to the display surface.

Description

Automatic LED display box body and LED display screen of separation

Technical Field

The application relates to the field of LED display screens, in particular to an LED display box body capable of being automatically separated and an LED display screen.

Background

The LED display screen is widely applied to more and more scenes such as outdoor display, monitoring centers, advertisement/media display, stages and the like, and is generally formed by splicing a plurality of LED display box bodies which are formed by splicing a plurality of modules. Along with the application of the LED display screen is more and more extensive, the demand for convenient maintenance of the LED display screen is stronger and stronger. At present, the LED display screen generally needs to be maintained before. Common front maintenance tools can be divided into two categories, namely vacuum adsorption tools and magnetic adsorption type front maintenance tools.

The existing vacuum adsorption tool is generally connected with a mains supply, and a high-power motor is adopted to drive the blades to rotate to generate a vacuum environment so as to adsorb the LED display module, so that the LED display module is detached from the front of the LED display screen. The existing vacuum adsorption tool is large in size and limited by a cable connected with a mains supply, and is difficult to operate in rainy days or outdoor high-altitude LED display screen maintenance. Moreover, the vacuum adsorption tool can generate larger noise when working, and can not be used in some special occasions or night time, thereby having larger limitation.

The current formula front maintenance instrument of inhaling is provided with strong magnetism magnet, need use thicker package material when the transportation, avoids magnetic force to cause the unnecessary influence.

Generally, the module and the frame of the LED box are attracted together by magnetic force. When the front maintenance, current vacuum adsorption instrument and magnetism inhale formula front maintenance instrument, after adsorbing the module, exert the effort of outwards dragging outside the module to overcome the magnetic force between module and the frame, realize the separation of module and frame. However, such an operation is likely to cause module deformation, and further causes problems such as circuit breakage or pixel position deviation.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an automatically separated LED display box and an LED display screen to solve the problem that the module is easily deformed due to the outward acting force applied by the front maintenance tool of the existing LED display box outside the module.

An embodiment of the application provides an automatically separated LED display box body, which comprises a box body frame and at least one LED display module, wherein the box body frame is provided with a mounting position, and the LED display module is arranged corresponding to the mounting position of the box body frame;

a magnet is arranged on one surface, facing the box body frame, of the LED display module, an electromagnet is correspondingly arranged on the box body frame, the electromagnet comprises an iron core, and the LED display module is fixedly connected with the box body frame through the magnetic adsorption effect between the magnet and the iron core;

during front maintenance, the electromagnet is connected with a first current in a first current direction, one end, facing the magnet, of the electromagnet generates a polarity which is the same as the polarity of a magnetic pole, facing one end of the electromagnet, of the magnet, and the electromagnet and the magnet generate mutually exclusive acting force to separate the LED display module from the box body frame.

In some embodiments, the electromagnet is a suction cup type electromagnet, the electromagnet further comprises a magnet housing, the magnet housing is provided with a through groove, and the iron core is accommodated in the through groove and exposed out of the magnet housing.

In some embodiments, the electromagnet further comprises a spring disposed at the bottom of the through slot, one end of the spring is connected to the iron core, and the other end of the spring is connected to the magnet housing.

In some embodiments, the electromagnet further comprises a second permanent magnet disposed at the bottom of the magnet housing, and the second permanent magnet and the magnet on the LED display module generate a magnetic attraction force.

In some embodiments, the box frame is further provided with a guide shaft, and the guide shaft is provided with a guide hole; the LED display module is correspondingly provided with a guide rod; the guide rod is inserted into the guide hole of the guide shaft; during front maintenance, when the LED display module is separated from the box body frame, the guide rod slides in the guide hole of the guide shaft, and at least part of the guide rod is accommodated in the guide hole of the guide shaft.

In some embodiments, a buffer pad is further disposed on the guide shaft to provide a buffer between the guide shaft and the LED display module.

In some embodiments, the LED display module further comprises a power supply and a control card, wherein the power supply and the control card are fixedly arranged in an installation position of the box body frame, and the LED display module is covered on the installation position and seals the installation position; the power supply is electrically connected with the control card and the LED display module to provide electric energy; and the control card is electrically connected with the LED display module and controls the display work of the LED display module according to communication data.

In some embodiments, the power supply is a low-voltage power supply unit, receives a low-voltage power supply input, converts the low-voltage power supply input into a target voltage suitable for the LED display module to use, and outputs the target voltage to the LED display module for use.

In some embodiments, the wireless communication unit is electrically connected with the control card; the wireless communication unit is used for receiving externally input communication data and transmitting the communication data to the control card;

and the control card also controls the current direction of the electromagnet according to the communication data.

Another embodiment of the application further provides an LED display screen, which comprises a plurality of LED display box bodies, wherein the LED display box bodies are spliced together to form the display screen; the LED display box body is the LED display box body in any one of the embodiments.

Compared with the prior art that the front maintenance tool is abutted to the outer side of the LED display module to apply outward tensile force, the LED display box body provided by the embodiment of the application utilizes the electromagnet and the magnet to generate mutually exclusive acting force between the box body frame and the LED display module, because the mutually exclusive acting force is generated and the magnetic adsorption force of fixed connection is eliminated, the mutually exclusive acting force required by separating the LED display module is relatively small; moreover, a plurality of groups of electromagnets and magnets can be arranged, the LED display module receives uniform and outward thrust at a plurality of positions, the LED display module does not receive two opposite acting forces, and the LED display module does not deform. Simultaneously, mutually exclusive effort is located the back of LED display module assembly, can not touch the LED lamp pearl of display surface, can not produce any harmful effects to the display surface.

Drawings

Fig. 1 is a schematic structural diagram of an LED display box according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an LED display module separated from an LED display box according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an LED display module according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of the LED display box according to an embodiment of the present application after separating one LED display module;

FIG. 5 is a schematic structural diagram of a case frame according to an embodiment of the present application;

FIG. 6 is an enlarged view of a portion of area A of FIG. 5;

fig. 7A-7C are diagrams illustrating the state changes between the electromagnet and the magnet according to an embodiment of the present application.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As shown in fig. 1 to 4, an embodiment of the present application provides an automatically separated LED display box 10, which includes a box frame 200 and at least one LED display module 100, wherein the box frame 200 is provided with a mounting position 200a, and the LED display module 100 is disposed corresponding to the mounting position 200a of the box frame 200;

one surface of the LED display module 100 facing the box body frame 200 is provided with a magnet 110, the box body frame 200 is correspondingly provided with an electromagnet 210, the electromagnet 210 comprises an iron core 2101, and the LED display module 100 is fixedly connected with the box body frame 200 through the magnetic adsorption effect between the magnet 110 and the iron core 2101;

during the front maintenance, the electromagnet 210 is connected with a first current in a first current direction, one end of the electromagnet 210 facing the magnet 110 generates a polarity identical to a magnetic pole polarity of the magnet 110 facing the end of the electromagnet 210, and the electromagnet 210 and the magnet 110 generate mutually exclusive acting force to separate the LED display module 100 from the box frame 200.

For example, as shown in fig. 4, the box frame 200 may include a bottom plate 202 and a plurality of side plates 201, the side plates 201 are fixedly connected to the bottom plate 202, the side plates 201 are fixedly connected to each other, and the side plates 201 and the bottom plate 202 enclose to form an installation position 200 a. The electromagnet 210 may be fixedly disposed on the bottom plate 202, and the iron core 2101 may partially leak out of the electromagnet 210 to contact with the magnet 110 of the LED display module 100, thereby achieving a magnetic adhesion connection.

One, two or more LED display modules 100 may be included in the LED display box 10. As shown in fig. 2 and 3, the LED display module 100 may include a display surface 100a and a module back surface 100 b. On the display surface 100a, the array is provided with LED lamp beads. On the module back surface 100a, a magnet 110 is provided. There may be a plurality of magnets 110 on each LED display module 100, for example, a plurality of magnets 110 may be disposed at the corners and middle positions of the sides of the module. The specific number of the magnets 110 may be determined according to the weight and size of the LED display module 100, as long as the connection stability can be ensured.

For example, as shown in fig. 7A, the surface of the magnet 110 facing the electromagnet 210 is set to be S-pole, and the surface facing away from the electromagnet 210 is set to be N-pole. When the LED display module 100 is fixed to the case frame 200, the magnet 110 of the LED display module 100 contacts the core 2101 of the electromagnet 210 on the case frame 200, and the S pole of the magnet 110 may attract the core 2101, thereby fixing the LED display module 100 to the case frame 200. During the front maintenance, as shown in fig. 7C, the electromagnet 210 is switched on with a predetermined current in the first current direction, one end of the electromagnet 210 facing the magnet 110 generates a polarity same as the S-pole, and according to the principle that like poles repel each other, a repulsive force of a predetermined magnitude is generated between the electromagnet 210 and the magnet 110, and the repulsive force can separate the LED display module 100 from the box frame 200.

In some scenarios, it may be desirable to enhance the stability of the fixed connection between the LED display module 100 and the cabinet frame 200. At this time, a second current in a second current direction opposite to the first current direction may be applied to the electromagnet 210, and the end of the electromagnet 210 facing the magnet 110 may generate a polarity opposite to the polarity of the magnetic pole of the magnet 110 facing the end of the electromagnet 210. For example, as shown in fig. 7B, when the second current is applied, the end of the electromagnet 210 facing the magnet 110 generates a polarity N different from the S-pole, and magnetic attraction is generated between the electromagnet 210 and the magnet 110 according to the principle of opposite attraction. At this time, a magnetic field generated by the reverse current of the electromagnet 210 is also superimposed on the magnetic field provided by the magnet 110, thereby causing a greater magnetic attraction force between the magnet 110 and the electromagnet 210. Thus, the stability of the fixed connection between the LED display module 100 and the case frame 200 can be enhanced.

The electromagnet 210 is arranged on the box body frame 200, the magnet 110 is arranged on the LED display module 100, and the LED display module 100 and the box body frame 200 are fixedly connected by utilizing the magnetic adsorption effect between the magnet 110 and the iron core 2101 of the electromagnet 210; during the front maintenance, a current with a predetermined magnitude in a predetermined direction is applied to the electromagnet 210, so that the electromagnet 210 generates a magnetic pole which is the same as the corresponding surface of the magnet 110, and generates a repulsive force with a predetermined magnitude based on the principle that like poles repel each other, thereby separating the LED display module 100 from the case frame 200.

Compared with the prior art that the front maintenance tool is abutted to the outer side of the LED display module to apply outward tensile force, the LED display box body provided by the embodiment of the application utilizes the electromagnet and the magnet to generate mutually exclusive acting force between the box body frame and the LED display module, because the mutually exclusive acting force is generated and the magnetic adsorption force of fixed connection is eliminated, the mutually exclusive acting force required by separating the LED display module is relatively small; moreover, a plurality of groups of electromagnets and magnets can be arranged, the LED display module receives uniform and outward thrust at a plurality of positions, the LED display module does not receive two opposite acting forces, and the LED display module does not deform. Simultaneously, mutually exclusive effort is located the back of LED display module assembly, can not touch the LED lamp pearl of display surface, can not produce any harmful effects to the display surface.

The electromagnet 210 may be a dc electromagnet or an ac electromagnet. Preferably, the electromagnet 210 is a dc electromagnet.

In some embodiments, electromagnet 210 may be embodied as a suction cup electromagnet. As shown in fig. 5 and 6, the portion of the core 2101 exposed from the electromagnet 210 has a disk shape. Specifically, the electromagnet 210 may include a magnet housing 2102, wherein the magnet housing 2102 has a through slot, and the iron core 2101 is received in the through slot and exposed from the magnet housing 2102. Between the magnet housing 2102 and the core 2101, a resin may also be potted to seal the electromagnet 210.

Further, the electromagnet 210 further includes a spring, the spring is disposed at the bottom of the through slot, one end of the spring is connected to the iron core 210, and the other end of the spring is connected to the magnet housing 2102. Through setting up the spring, during the front maintenance, electro-magnet 210 and magnet 110 produce the effort of mutual exclusion to compression spring makes iron core 2101 keep away from magnet 110 fast, realizes the quickly separating between LED display module assembly 100 and the box frame 200, reduces electro-magnet 210's live time, practices thrift the electric energy.

In some embodiments, the electromagnet 210 further includes a second permanent magnet, the second permanent magnet is disposed at the bottom of the magnet housing 2102, and the second permanent magnet and the magnet 110 on the LED display module generate a magnetic attraction force, so as to enhance the magnetic attraction force between the electromagnet 210 and the magnet 110 on the LED display module 100, thereby ensuring the connection stability between the LED display module 100 and the box body frame 200.

In some embodiments, the electromagnet 210 may also be a push-pull electromagnet.

In some embodiments, as shown in fig. 3 to 6, the box frame 200 is further provided with a guide shaft 220, and the guide shaft 220 is provided with a guide hole 220 a; the LED display module 100 is correspondingly provided with a guide rod 120; the guide rod 120 is inserted into the guide hole 220a of the guide shaft 220, and during the front maintenance, when the LED display module 100 is separated from the box body frame 200, the guide rod 120 slides in the guide hole 220a of the guide shaft 220 to position the movement of the LED display module 100; meanwhile, the guide rods 120 are at least partially received in the guide holes 220a of the guide shaft 220 to support the LED display module 100, so as to prevent the LED display module 100 from falling off the box frame 200 after being separated.

As shown in fig. 6, a buffer pad 221 is further disposed on the guide shaft 220 to provide a buffer between the guide shaft 220 and the LED display module 100, so as to prevent the guide shaft 220 from damaging the LED display module 100.

As shown in fig. 4 and 5, the LED display box 10 may further include a power supply 300 and a control card 400, the power supply 300 and the control card 400 are fixedly disposed in the mounting position 200a of the box frame 200, and the LED display module 100 covers the mounting position 200a and seals the mounting position 200 a; the power supply 300 is electrically connected with the control card 400 and the LED display module 100 to provide electric energy; and the control card 400 is electrically connected with the LED display module 100 and controls the display operation of the LED display module 100 according to the communication data.

The power supply 300 may be a low-voltage power supply unit or a high-voltage power supply unit. In order to reduce the size of the LED box 10, the power supply 300 is preferably a low voltage power supply unit, which receives a low voltage power input, converts the low voltage power input into a target voltage suitable for the LED display module 100, and outputs the target voltage to the LED display module 100 for use. For example, the low voltage power supply unit may receive a low voltage power input of 48V, such as a low voltage ac power input of 48V, or a low voltage dc power input of 48V, and then convert the low voltage ac power input into a dc voltage of 4.8V, which is a target voltage, to supply power to the LED display module 100. The target voltage output by the low voltage power supply unit 170 may include a plurality of different voltage values, such as 5V, 4.8V, 3.3V, 1.8V, etc., according to actual requirements. Through set up low voltage power supply unit in the box, need not handle high-tension current, can adopt the electronic components of less size, volume, tolerance low pressure, for high voltage power supply unit, low voltage power supply unit's size and volume can obtain effectual reduction for LED display box 10 can be made very frivolously, realizes frivolous LED display box.

In some embodiments, the LED display module 100 and the display control unit 130 may be electrically and signal connected through a terminal connector. For example, a male connector is disposed on the LED display module 100, a female connector is disposed on the control card 400, and the male connector is inserted into the female connector, so as to realize electrical connection and signal connection between the LED display module 100 and the control card 400.

In order to reduce the use of signal cables, reduce the operation steps during installation, improve the installation efficiency, and facilitate the control of the LED display box, the LED display box 10 may further be provided with a wireless communication unit, which is electrically connected with the control card 400; the wireless communication unit is configured to receive externally input communication data and transmit the communication data to the control card 400. The wireless communication unit can be in communication connection with the background control terminal and receives communication data transmitted by the background control terminal; the LED display box can also be in communication connection with other LED display boxes to receive communication data transmitted by the other LED display boxes. By arranging the wireless communication unit, a signal cable is not needed to transmit signals, and the installation step of the cable is omitted during installation, so that the installation efficiency can be greatly improved; meanwhile, based on wireless communication, the user can conveniently control the LED display box body.

In some embodiments, the control card 400 may control the direction of current that the electromagnet 210 is switched on. For example, a front maintenance switch may be provided on the LED display cabinet 10, and the front maintenance switch may be set to an off state, an enhanced connection state, and a separated operation state. When the current maintenance switch is in the off state, the electromagnet 210 does not conduct current; when the current maintenance switch is in the enhanced connection state, the control card 400 controls the electromagnet 210 to switch on the second current in the second current direction; when the current maintenance switch is in the separation working state, the control card 400 controls the electromagnet 210 to switch on the first current in the first current direction, and separates the LED display module 100 from the box frame 200. For example, the control card 400 may control the current direction of the electromagnet 210 according to the pre-maintenance data received by the wireless communication unit.

Compared with the prior art that the front maintenance tool is abutted to the outer side of the LED display module to apply outward tensile force, the LED display box body provided by the embodiment of the application utilizes the electromagnet and the magnet to generate mutually exclusive acting force between the box body frame and the LED display module, because the mutually exclusive acting force is generated and the magnetic adsorption force of fixed connection is eliminated, the mutually exclusive acting force required by separating the LED display module is relatively small; moreover, a plurality of groups of electromagnets and magnets can be arranged, the LED display module receives uniform and outward thrust at a plurality of positions, the LED display module does not receive two opposite acting forces, and the LED display module does not deform. Simultaneously, mutually exclusive effort is located the back of LED display module assembly, can not touch the LED lamp pearl of display surface, can not produce any harmful effects to the display surface.

Another embodiment of this application still provides an LED display screen, including a plurality of LED display box 10, a plurality of LED display box 10 splice each other together, form the display screen, LED display box 10 is the frivolous LED display box of any preceding embodiment. The LED display screen may further include a splicing frame, and the LED display box 10 may be fixed on the splicing frame.

By adopting the LED display box body provided by the embodiment, the LED display module can not deform during front maintenance; the LED lamp beads on the display surface can not be touched, and any adverse effect on the display surface can not be generated.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An automatically separated LED display box body is characterized by comprising a box body frame and at least one LED display module, wherein the box body frame is provided with a mounting position, and the LED display module is arranged corresponding to the mounting position of the box body frame;

a magnet is arranged on one surface, facing the box body frame, of the LED display module, an electromagnet is correspondingly arranged on the box body frame, the electromagnet comprises an iron core, and the LED display module is fixedly connected with the box body frame through the magnetic adsorption effect between the magnet and the iron core;

during front maintenance, the electromagnet is connected with a first current in a first current direction, one end, facing the magnet, of the electromagnet generates a polarity which is the same as the polarity of a magnetic pole, facing one end of the electromagnet, of the magnet, and the electromagnet and the magnet generate mutually exclusive acting force to separate the LED display module from the box body frame.

2. The LED display cabinet of claim 1, wherein the electromagnet is a suction cup type electromagnet, the electromagnet further comprising a magnet housing, the magnet housing having a through slot, the iron core received in the through slot and exposed from the magnet housing.

3. The LED display box of claim 2, wherein the electromagnet further comprises a spring, the spring is disposed at the bottom of the through slot, one end of the spring is connected to the iron core, and the other end of the spring is connected to the magnet housing.

4. The LED display box of claim 2, wherein the electromagnet further comprises a second permanent magnet disposed at the bottom of the magnet housing, the second permanent magnet and the magnet on the LED display module generating a magnetic attraction force.

5. The LED display box of claim 1, wherein the box frame is further provided with a guide shaft, and the guide shaft is provided with a guide hole; the LED display module is correspondingly provided with a guide rod; the guide rod is inserted into the guide hole of the guide shaft; during front maintenance, when the LED display module is separated from the box body frame, the guide rod slides in the guide hole of the guide shaft, and at least part of the guide rod is accommodated in the guide hole of the guide shaft.

6. The LED display cabinet of claim 5, wherein a buffer pad is further disposed on the guide shaft to provide a buffer between the guide shaft and the LED display module.

7. The LED display box body of any one of claims 1 to 6, further comprising a power supply and a control card, wherein the power supply and the control card are fixedly arranged in an installation position of the box body frame, and the LED display module is covered on the installation position and seals the installation position; the power supply is electrically connected with the control card and the LED display module to provide electric energy; and the control card is electrically connected with the LED display module and controls the display work of the LED display module according to communication data.

8. The LED display cabinet of claim 7, wherein the power supply is a low voltage power supply unit that receives a low voltage power input, converts the low voltage power input to a target voltage suitable for use by the LED display module, and outputs the target voltage to the LED display module for use.

9. The LED display box of claim 7, further comprising a wireless communication unit electrically connected to the control card; the wireless communication unit is used for receiving externally input communication data and transmitting the communication data to the control card;

and the control card also controls the current direction of the electromagnet according to the communication data.

10. An LED display screen comprises a plurality of LED display box bodies, wherein the LED display box bodies are spliced together to form the display screen; the LED display box is characterized in that the LED display box is the LED display box in any one of claims 1-9.

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