CN111326078A

CN111326078A - Waterproof LED display screen unit board

Info

Publication number: CN111326078A
Application number: CN201811540706.1A
Authority: CN
Inventors: 林广双
Original assignee: Guangzhou Gaobolin Electronics Co ltd
Current assignee: Guangzhou Gaobolin Electronics Co ltd
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-06-23

Abstract

The invention discloses a waterproof LED display screen unit plate, which comprises a display module and a back frame, wherein the back frame is fixed on the back of the display module, two edges of the back frame along the length direction of the back frame are respectively provided with a flange and a groove, two edges of the back frame along the width direction of the back frame are also respectively provided with the same flange and groove, and the flange and the groove can be mutually clamped; the waterproof LED display screen unit plate has the advantages of reasonable structure, capability of improving the waterproof effect of the LED display screen and capability of ensuring stable and reliable operation of the LED display screen unit plate.

Description

Waterproof LED display screen unit board

Technical Field

The invention belongs to the technical field of LED display equipment, and particularly relates to a waterproof LED display screen unit plate.

Background

A light Emitting diode (led), which is a solid semiconductor device capable of converting electrical energy into visible light, can directly convert electricity into light. The core of the LED is a semiconductor wafer, one end of the wafer is attached to a support, the other end of the wafer is a negative electrode, the other end of the wafer is connected with a positive electrode of a power supply, and the whole wafer is packaged by epoxy resin. The semiconductor wafer is composed of two parts, one of which is a P-type semiconductor in which holes predominate and the other of which is an N-type semiconductor in which electrons predominate. When the two semiconductors are connected, a P-N junction is formed between them. When current is applied to the wafer through the wire, electrons are pushed to the P region where they recombine with holes and then emit energy in the form of photons, which is the principle of LED lamp illumination. The wavelength of the light, i.e., the color of the light, is determined by the material forming the P-N junction.

The LED display device can be formed by utilizing the LED light-emitting principle and packaging a plurality of LED light-emitting diodes on a PCB (printed circuit board) in a lattice form. The LED display screen has the characteristics of high brightness, wide visual angle, long service life and convenience in manufacturing; therefore, the ultra-large screen display screens widely used outdoors and indoors are basically of the type of the LED display screens. However, the waterproof effect of the existing LED display screen has limitations, especially for outdoor large-screen LED display screens; although the LED display panel is waterproof, some parts of the display panel cannot be waterproof, such as the input interface on the back of the display panel and the power supply terminal on the back of the display panel. The LED display screen is formed by splicing and fixing a plurality of display screen unit plates on a mounting position, and splicing seams can be formed among the display screen unit plates, so that rainwater can enter the back surface of the LED display screen along the splicing seams among the display screen unit plates when the outdoor LED display screen is in rainy days, particularly when rainwater is flushed against the surface of the LED display screen due to wind direction, an input interface or a connecting pin of the display screen unit plates is short-circuited or corroded due to dampness, and stable and reliable work of the LED display screen is influenced or faults occur.

Disclosure of Invention

In view of this, the present invention provides a unit plate of an LED display screen, which has a reasonable structure, can improve the waterproof effect of the LED display screen, and ensure the stable and reliable operation of the LED display screen.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the utility model provides a waterproof LED display screen cell board, includes display module assembly and back of the body frame, the back of the body frame is fixed at the back of the display module assembly, two edges along its length direction on the frame of the back of the body set up flange and recess respectively, two edges along its width direction on the frame of the back of the body also are provided with same flange and recess respectively, flange and recess block each other.

Preferably, a first elastic sealing strip is embedded in the end part of the flange along the length direction of the flange.

Preferably, a first elastic sealing strip is embedded in one side or two sides of the flange along the length direction of the flange; and/or the end part of the flange and one side or two sides of the flange are provided with first elastic sealing strips along the length direction of the flange.

Preferably, a second elastic sealing strip is embedded in one side or two sides of the inner wall of the groove along the length direction of the groove.

Preferably, the flange and the recess surround the periphery of the unit plate.

Preferably, the display module comprises LED light-emitting diodes and a PCB circuit board, and the LED light-emitting diodes are uniformly arranged on the PCB circuit board.

Preferably, the LED is a single-color LED or an RGB three-color LED.

The embodiment of the invention has the beneficial effects that: because the peripheries of the back frames of the LED display screen unit plates are respectively provided with the mutually matched flange grooves, when a plurality of LED display screen unit plates are assembled, the flanges and the grooves between the adjacent display screen unit plates are mutually clamped to form water-blocking seal; thereby effectively avoided among the prior art rainwater to enter into the inside of LED display screen easily from between the seam of LED display screen cell board, and then made LED display screen cell board arouse the short circuit or corrode because of weing, consequently effectively improved LED display screen stability and reliability at the during operation, reduced its probability of breaking down.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a front view of a waterproof LED display screen cell plate of the present invention;

FIG. 2 is a side cross-sectional view of a waterproof LED display panel unit panel of the present invention;

fig. 3 is an assembled schematic diagram of a waterproof LED display screen unit panel according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it should be understood that the terms "longitudinal", "transverse", "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 illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1 to 3, the embodiment provides a waterproof LED display screen unit plate, which includes a display module 1 and a back frame 2, wherein the back frame 2 is fixed on the back of the display module 1 by bolts, two edges of the back frame 2 along the length direction thereof are respectively provided with a flange 21 and a groove 22, two edges of the back frame 2 along the width direction thereof are also respectively provided with the same flange 21 and groove 22, and the flange 21 and the groove 22 can be mutually clamped. When the LED display screen unit plates are spliced into the LED display screen, the edges of the traditional LED display screen unit plates are smooth, so that the splicing seams of the spliced display screen cannot well block rainwater, and the rainwater can flow into the display screen along the splicing seams; after the flange 21 and the groove 22 are arranged on the display screen, the flange 21 and the flange 22 on the two adjacent display single blocks are clamped with each other to form labyrinth seal, so that rainwater is effectively prevented from entering the LED display screen from the joint between the LED display screen unit plates easily, namely, the LED display screen unit plates are effectively prevented from short circuit or corrosion due to dampness, and the stability and the reliability of the LED display screen during operation are improved.

In the preferred embodiment, as shown in figure 2, the end of the flange 21 is embedded along its length with a first resilient sealing strip 23. Of course, a first elastic sealing strip 23 is embedded in one side or two sides of the flange 21 along the length direction; and/or, the end of the flange 21 and one or both sides of the flange 21 are provided with the first elastic sealing strips 23 along the length direction thereof, so that the sealing effect between the unit plates can be improved.

As shown in fig. 1 and 2, in the preferred embodiment, the flange 21 and the recess surround the cell plate, and a second elastic sealing strip 24 is embedded in one side or both sides of the inner wall of the groove 22 along the length direction thereof, and the second elastic sealing strip 24 in this embodiment is embedded in only one side of the inner wall of the groove 22. The cooperation of the second elastic sealing strip 24 on the inner wall of the groove 22 and the first elastic sealing strip 23 on the flange 21 can further improve the sealing and water-proof effects between the LED display screens. The number of the sealing strips can be flexibly used according to different use requirements; meanwhile, the first elastic sealing strip 23 and the second elastic sealing strip 24 in this embodiment are elastic sealing strips made of rubber, and elastic sealing strips made of silicone, PVC or other materials can be selected according to different requirements.

As shown in fig. 1, in the preferred embodiment, the display module 1 includes LED light emitting diodes 11 and a PCB 12, and the LED light emitting diodes 11 are uniformly arranged and electrically connected on the PCB 12. Each LED 11 is equivalent to a display pixel, and a plurality of LEDs 11 can form a corresponding pattern when turned on as required. When the LED 11 is a monochromatic LED, that is, the LED display screen formed by the LED display unit board can only display one color, such as red, white, etc., and when the LED 11 is a RGB three-color LED, that is, the LED 11 can simultaneously display three colors of red R, green G, and blue B, and the color pattern can be displayed by mixing the three colors of RGB.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a waterproof LED display screen cell board, includes display module assembly and back of the body frame, the back of the body frame is fixed at the back of display module assembly, its characterized in that: the back frame is provided with a flange and a groove on two edges along the length direction of the back frame respectively, the back frame is also provided with the same flange and groove on two edges along the width direction of the back frame respectively, and the flange and the groove can be mutually clamped.

2. The waterproof LED display screen cell plate of claim 1, wherein: and a first elastic sealing strip is embedded in the end part of the flange along the length direction of the flange.

3. The waterproof LED display screen cell plate of claim 2, wherein: a first elastic sealing strip is embedded in one side or two sides of the flange along the length direction of the flange; and/or the end part of the flange and one side or two sides of the flange are provided with first elastic sealing strips along the length direction of the flange.

4. The waterproof LED display screen cell plate of claim 1, wherein: and a second elastic sealing strip is embedded in one side or two sides of the inner wall of the groove along the length direction of the groove.

5. The waterproof LED display screen cell plate of claim 1, wherein: the flange and the concave are arranged around the unit plate.

6. The waterproof LED display screen cell plate of claim 1, wherein: the display module comprises LED light-emitting diodes and a PCB circuit board, wherein the LED light-emitting diodes are uniformly arranged on the PCB circuit board.

7. The waterproof LED display screen cell plate of claim 6, wherein: the LED is a single-color LED or an RGB three-color LED.