MINI LED electromagnetic handwriting digital screen module

Abstract

The utility model discloses a MINI LED electromagnetic handwriting digital screen module, which relates to the technical field of display screen modules and comprises a shell and a moisture-proof component. A circular through hole is formed in one side of the shell, a dustproof net is arranged at the circular through hole of the shell, a circuit board is arranged in a groove of the shell, and a display screen is arranged on one side of the circuit board; the moisture-proof assembly comprises a base and a connecting frame, a guide rod is fixedly connected to the base, a containing box containing a drying agent is slidably connected to the guide rod, a reset spring is fixedly connected to the bottom of the containing box, moisture in air is adsorbed through the drying agent, the weight is increased, and then the containing box moves downwards to touch the touch switch; the fan is started to rotate through the touch switch, so that the fan can blow away moisture in the drying agent and can also blow away dust on the dustproof net, the problem of heat dissipation is effectively solved while the problem of moisture erosion is solved, and then the circuit board and the display screen can be better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen modules, in particular to a MINI LED electromagnetic handwriting digital screen module. Background Art

[0002] LED display module, referred to as unit board, is composed of LED light-emitting diodes and driving circuits, driving ICs and plastic kits. It is one of the main components of LED display products. LED display modules are divided into indoor, semi-outdoor and outdoor types according to their different usage spaces.

[0003] Chinese patent publication number CN209543805U discloses "a strip-shaped LED display screen module", including a shell, both sides of which are provided with connection grooves, and the inner wall of the shell is connected to a circuit board, the inner wall of the shell is fixed with a limit plate near the upper part of the circuit board, and the upper part of the shell is connected with a connection plate, the rear surface of the shell is provided with a groove, and the rear surface of the shell is provided with a self-adhesive sticker, the rear surface of the shell is provided with a vent near the inner side of the self-adhesive sticker, the inner wall of the connection plate is connected with a card block, and the connection plate and the inside of the shell are provided with connection holes, and the outer side of the connection groove is embedded with a magnet. The utility model arranges the self-adhesive sticker and the mounting plate on the rear surface and both sides of the shell respectively, and when the shell is connected to the wall, the self-adhesive sticker provides a primary connection force to the shell and the wall, and the mounting plate provides a secondary connection force to the shell and the wall, which effectively solves the problem that the connection force between the device and the wall cannot be further improved.

[0004] Although the device in the above patent solves the heat dissipation problem of the device through the heat dissipation holes, there will be air circulation during the heat dissipation process. Along with the air circulation, the air will carry moisture into the module, and then the moisture will corrode the circuit board and the display screen, causing the circuit board or the display screen to malfunction. Therefore, it is particularly important to prevent the module from moisture. The traditional desiccant may need to be taken out and dried after being adsorbed once before it can be used again. A MINI LED electromagnetic handwriting digital screen module is now proposed to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a MINI LED electromagnetic handwriting digital screen module to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a MINI LED electromagnetic handwriting digital screen module, comprising a shell and a moisture-proof component; a circular through hole is opened on one side of the shell, a dust-proof net is provided at the circular through hole of the shell, a circuit board is provided in the groove of the shell, and a display screen is provided on one side of the circuit board; the moisture-proof component comprises a base and a connecting frame, a guide rod is fixedly connected to the base, a containing box with a desiccant is slidably connected to the guide rod, a reset spring is fixedly connected to the bottom of the containing box, the other end of the reset spring is fixedly connected to the base, a motor is provided on the side wall of the connecting frame, a fan is coaxially fixedly connected to the rotating shaft of the motor, and a touch switch is also provided on the base.

[0007] Furthermore, a fixing frame for fixing the display screen is provided on the shell, which can reinforce the display screen so that the display screen can be more stably fixed on the shell during the installation process of the display screen.

[0008] Furthermore, a slider is slidably connected to the guide rod, a connecting plate is fixedly connected to the slider, an insertion rod is provided on one side of the storage box, and a socket that matches the insertion rod one by one is provided on the connecting plate. The sliding connection between the slider and the guide rod reduces the wear of the guide rod during the sliding of the slider and the guide rod, and the cooperation between the insertion rod of the storage box and the socket of the connecting plate can facilitate the replacement of the desiccant in the storage box, thereby achieving a better drying effect.

[0009] Furthermore, a rectangular through slot is provided on one side of the shell away from the display screen, and a shell cover is provided at the rectangular through slot of the shell. The shell cover is fixedly connected to the plastic shell by bolts. Without taking out the display screen circuit boards one by one, the shell cover can be opened by screwing the bolts to expose the rectangular through slot and then the storage box can be taken out.

[0010] Furthermore, a rubber pad is provided at the contact point between the display screen and the shell. Since the display screen needs to abut against the inside of the shell, friction is inevitably generated during the abutment process, and the friction may damage the outer wall of the display screen and thus affect the use of the display screen. The rubber pad can protect the outer wall of the display screen on the one hand, and protect the inner wall of the shell on the other hand.

[0011] Furthermore, a replacement port is provided on the storage box, and a blockage is provided at the replacement port. When the desiccant in the storage box needs to be replaced after being used a certain number of times, the desiccant in the storage box can be replaced through the replacement port, and the blockage can prevent the desiccant from falling during the movement of the storage box.

[0012] Compared with the prior art, the utility model provides a MINI LED electromagnetic handwriting digital screen module, which absorbs moisture in the air through a desiccant to increase its weight, thereby causing the storage box to move down and touch a touch switch. The fan is started to rotate by the touch switch, so that the fan can blow away the moisture in the desiccant and the dust on the dustproof net. While solving the problem of moisture erosion, the heat dissipation problem is also effectively solved, thereby better protecting the circuit board and the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure of the device provided in the embodiment of the utility model;

[0015] Figure 2 A schematic diagram of the cross-sectional structure of a moisture-proof component provided in an embodiment of the utility model;

[0016] Figure 3 A schematic diagram of the guide rod accommodating box structure provided by an embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the back structure of the shell provided in an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Shell; 101. Circular through hole; 102. Dust screen; 103. Circuit board; 104. Display screen; 105. Rectangular through slot; 106. Shell cover; 2. Base; 201. Touch switch; 3. Connecting frame; 4. Guide rod; 401. Slider; 5. Accommodating box; 501. Reset spring; 502. Insert rod; 6. Fan; 7. Fixing frame; 8. Connecting plate; 801. Socket. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] See also Figure 1-4, a MINI LED electromagnetic handwriting digital screen module provided by an embodiment of the utility model comprises a shell 1 and a moisture-proof component; a circular through hole 101 is opened on one side of the shell 1, a dust-proof net 102 is arranged at the circular through hole 101 of the shell 1, a circuit board 103 is arranged in the groove of the shell 1, and a display screen 104 is arranged on one side of the circuit board 103; the moisture-proof component comprises a base 2 and a connecting frame 3, a guide rod 4 is fixedly connected to the base 2, a receiving box 5 with a desiccant placed thereon is slidably connected to the guide rod 4, a reset spring 501 is fixedly connected to the bottom of the receiving box 5, and the other end of the reset spring 501 is fixedly connected to the base 2, a fan 6 is arranged on the side wall of the connecting frame 3, and a touch switch 201 is also arranged on the base 2. After the shell 1 is installed and powered on, moisture in the air will enter the shell 1 along with the air circulation between the circular through hole 101 of the shell 1 and the outside, and the desiccant in the receiving box 5 can circulate moisture in the air flowing into the shell 1. The desiccant absorbs moisture. After the desiccant absorbs moisture, its weight increases, causing the container box 5 to slide on the guide rod 4. As the guide rod 4 slides, the return spring 501 is squeezed. After the container box 5 drops to a certain distance, it will contact the touch switch 201. After the touch switch 201 is activated, the fan 6 will be started. The moisture in the desiccant will be blown away by the wind force of the fan 6. Since the wind force of the fan 6 is directed to the outside of the shell 1, the moisture in the desiccant is blown to the outside of the shell 1. After the desiccant is dried, the weight of the container box 5 is reduced, and the elastic force of the return spring 501 can reset the container box 5. At this time, the container box 5 is away from the touch switch 201, the touch switch 201 is closed, and then the fan 6 stops rotating. At the same time, when the fan 6 blows the desiccant, there is also wind force to blow the dustproof net 102, so that the dust on the dustproof net 102 can fall off, thereby not affecting the heat dissipation function of the dustproof net 102.

[0022] Compared with the prior art, the utility model provides a MINI LED electromagnetic handwriting digital screen module, which increases the weight by absorbing moisture in the air through a desiccant, thereby causing the storage box 5 to move downward to touch the touch switch 201. The fan 6 is started to rotate by touching the switch 201, so that the fan 6 can blow away the moisture in the desiccant and the dust on the dustproof net 102. While solving the problem of moisture erosion, the heat dissipation problem is also effectively solved, thereby better protecting the circuit board 103 and the display screen 104.

[0023] As a preferred technical solution of this embodiment, a fixing frame 7 for fixing the display screen 104 is provided on the housing 1, which can reinforce the display screen 104 so that the display screen 104 can be more firmly fixed on the housing 1 during the installation of the display screen 104.

[0024] As a preferred technical solution of this embodiment, a slider 401 is slidably connected to the guide rod 4, a connecting plate 8 is fixedly connected to the slider 401, an insertion rod 502 is provided on one side of the accommodating box 5, and a socket 801 which matches the insertion rod 502 one by one is provided on the connecting plate 8. The sliding connection between the slider 401 and the guide rod 4 reduces the wear of the guide rod 4 during the sliding process of the slider 401 and the guide rod 4, and the cooperation between the insertion rod 502 of the accommodating box 5 and the socket 801 of the connecting plate 8 can facilitate the replacement of the desiccant in the accommodating box 5, thereby achieving a better drying effect.

[0025] As a preferred technical solution of this embodiment, a rectangular through slot 105 is provided on the side of the shell 1 away from the display screen 104, and a shell cover 106 is provided at the rectangular through slot 105 of the shell 1. The shell cover 106 is fixedly connected to the plastic shell 1 by bolts. Without taking out the display screen 104 and the circuit board 103 one by one, the shell cover 106 can be opened by tightening the bolts and the accommodating box 5 can be taken out through the rectangular through slot 105.

[0026] As a preferred technical solution of this embodiment, a rubber pad is provided at the contact point between the display screen 104 and the shell 1. Since the display screen 104 needs to abut against the inside of the shell 1, friction will inevitably be generated during the abutment process, and the friction may cause damage to the outer wall of the display screen 104 and thus affect the use of the display screen 104. The rubber pad can protect the outer wall of the display screen 104 on the one hand, and can also protect the inner wall of the shell 1 on the other hand.

[0027] As a preferred technical solution of this embodiment, a replacement port is provided on the storage box 5, and a blockage is provided at the replacement port. When the desiccant in the storage box 5 needs to be replaced after being used a certain number of times, the desiccant in the storage box 5 can be replaced through the replacement port, and the blockage can prevent the desiccant from falling during the movement of the storage box 5.

[0028] Working principle: After the desiccant in the storage box 5 absorbs moisture in the air, the mass of the storage box 5 will increase, causing the storage box 5 to slide downward on the guide rod 4. When the storage box 5 slides downward, it will squeeze the reset spring 501 and contact the touch switch 201, so that the fan 6 starts to dry the desiccant in the storage box 5. The dried desiccant reduces the mass of the storage box 5, and the reset spring 501 resets the storage box 5 and moves away from the touch switch 201 to stop the rotation of the fan 6.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A MINILED electromagnetic handwriting digital screen module, characterized in that: It comprises a housing (1) and a moisture-proof component; A circular through hole (101) is provided on one side of the shell (1), a dustproof net (102) is provided at the circular through hole (101) of the shell (1), a circuit board (103) is provided in the groove of the shell (1), and a display screen (104) is provided on one side of the circuit board (103); The moisture-proof component comprises a base (2) and a connecting frame (3); the base (2) is fixedly connected to a guide rod (4); a storage box (5) containing a desiccant is slidably connected to the guide rod (4); a reset spring (501) is fixedly connected to the bottom of the storage box (5); the other end of the reset spring (501) is fixedly connected to the base (2); a fan (6) is provided on the side wall of the connecting frame (3); and a touch switch (201) is also provided on the base (2).

2. A MINILED electromagnetic handwriting digital screen module according to claim 1, characterized in that: The housing (1) is provided with a fixing frame (7) for fixing the display screen (104).

3. The MINILED electromagnetic handwriting digital screen module according to claim 1, characterized in that: The guide rod (4) is slidably connected to a slider (401), the slider (401) is fixedly connected to a connecting plate (8), one side of the accommodating box (5) is provided with an insertion rod (502), and the connecting plate (8) is provided with a socket (801) that matches the insertion rod (502) one by one.

4. The MINILED electromagnetic handwriting digital screen module according to claim 1, characterized in that: A rectangular through slot (105) is provided on one side of the shell (1) away from the display screen (104), and a shell cover (106) is provided at the rectangular through slot (105) of the shell (1), and the shell cover (106) is fixedly connected to the shell (1) by bolts.

5. The MINILED electromagnetic handwriting digital screen module according to claim 1, characterized in that: A rubber pad is provided at the contact point between the display screen (104) and the housing (1).

6. The MINILED electromagnetic handwriting digital screen module according to claim 1, characterized in that: The containing box (5) is provided with a replacement opening, and a plug is provided at the replacement opening.

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