CN111696448A - Frameless LED display screen - Google Patents

Abstract

The invention discloses a borderless LED display screen, which comprises a screen body and a support. The screen body includes an outer transparent panel, a first transparent sandwich layer, a light panel, a second transparent sandwich layer and an inner transparent panel, which are sequentially arranged from outside to inside. The light board is made of several PCB boards that are seamlessly spliced to each other. The front of the PCB board is affixed with a number of LED light beads that are distributed in an array and completely cover the PCB board. The PCB board is provided with a circuit connected to the LED light beads. The back of the inner transparent panel is fixed on the support by gluing. The support is provided with a power circuit and a system box for controlling the display of the LED lamp beads. The power circuit and the system box are respectively connected to the circuit on the PCB board. The frameless LED display screen of the present invention can replace the existing curtain wall glass, and the frameless LED display screens can well realize multi-screen interconnection, maximize the multi-screen effect, and bring users a wider visual effect. Eliminates the sense of restraint of the original bezel display.

Description

A borderless LED display

technical field

The invention relates to the technical field of LED display screens, in particular to a borderless LED display screen.

Background technique

LED display is a device used to display information such as text, image, video and video signals. Because LED display can be arbitrarily extended to achieve seamless splicing, long running time, interactive technology can be used, and the display effect is good, so it is widely used In airports, shopping malls, hotels, high-speed railways, subways, cinemas, exhibitions, office buildings and other places.

Nowadays, there are more and more office buildings with glass curtain wall. As a beautiful and novel architectural wall decoration method, glass curtain wall is a prominent feature of the era of modernist high-rise buildings. The existing glass curtain wall is usually only composed of simple supporting components and transparent/translucent glass, and cannot achieve functional effects such as screen playback, advertisement display, and night scene. When it is necessary to achieve the above functional effects, it is necessary to hang/paste light strips on the surface of the curtain wall glass. The display effect of the light strips is not good, and the picture quality is poor, which can only meet some requirements of larger format and lower picture quality. Night scene screen display, etc. Therefore, it is necessary to develop a display screen that can not only replace the existing glass curtain wall but also bring better visual effects.

SUMMARY OF THE INVENTION

In view of the above problems, the purpose of the present invention is to provide a frameless LED display screen that can completely replace the existing curtain wall glass.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A borderless LED display screen, comprising a screen body and a support, the screen body comprising an outer transparent panel, a first transparent interlayer, a light plate, a second transparent interlayer and an inner layer sequentially arranged from outside to inside. Layer transparent panel. The light board is formed by seamless splicing of several PCB boards. The front of the PCB board is affixed with a number of LED light beads that are distributed in an array and completely cover the PCB board. The circuit to which the LED lamp beads are connected. The back of the inner layer transparent panel is fixed on the support by gluing, and a power circuit and a system box for controlling the display of the LED lamp beads are installed in the support. The power circuit and the system The boxes are respectively connected with the circuits on the PCB.

Further, in order to improve the transparency of the display screen, the PCB board includes a main body part and several substrates fixed on one side of the main body part and evenly spaced along the length direction of the main body part. Hollow grooves are formed by hollowing out between the substrates.

Further, the light board includes several PCB board groups that are sequentially spliced along the longitudinal direction, and the PCB board group is composed of two PCB boards that are arranged laterally and symmetrically arranged with each other.

Further, in order to better realize the mutual splicing between the upper and lower adjacent PCB boards, the top of the main body of the PCB board is provided with a protrusion, and the bottom is provided with a groove adapted to the shape of the protrusion, Positioning and splicing is achieved between any two adjacent PCB board groups through the cooperation of the protrusions and grooves.

Further, in order to reserve the connection part with the power supply circuit and the system box, the main body parts of all PCB boards are set outward, and the main body parts of the PCB boards are relative to the inner transparent panel and the edge of the second transparent interlayer. The circuit connection portion is formed by protruding outward.

Further, the support member includes two profiles arranged parallel to each other on the left and right sides of the back of the inner layer transparent panel, the profiles are provided with wire grooves, and the power lines and the system box are respectively fixed on the lines. in the slot.

Wherein, the power circuit includes a power board fixed in the wire slot, a number of copper bars electrically connected to the power board, and a number of HUBs electrically connected to the copper bars and arranged along the length of the wire slot The power board is externally connected to commercial power, the system box is signal-connected to a plurality of HUB boards through network cables, and the HUB boards are connected to the PCB board through a number of plug-in terminals.

Preferably, the material of the outer transparent panel and the inner transparent panel is glass, acrylic or PC.

Preferably, the first transparent interlayer and the second transparent interlayer are PVB adhesive layers, PVC adhesive layers, TPU adhesive layers or EVA adhesive layers.

Preferably, the material of the PCB board is PI, PET, FR4 or FPC.

The present invention has the following beneficial effects: 1. Provide a frameless LED display screen that can completely replace the existing curtain wall glass, the display screen can be well spliced with each other, realize the interconnection of multiple screens, and maximize the effect of connecting screens, It brings a wider visual effect to users and eliminates the sense of restraint of the original display module with border. 2. The lamp board is fixed in the way of lamination, which has the advantages of simple production process, high degree of automatic production, high production capacity and more intensive installation of lamp beads. At the same time, the overall installation of the display screen is convenient, the display effect is good, and the service life is long. .

Description of drawings

FIG. 1 is a schematic view of the front structure of the present invention.

FIG. 2 is a partial enlarged schematic diagram of part A in FIG. 1 .

FIG. 3 is a schematic diagram of the structure of the PCB board.

FIG. 4 is a schematic cross-sectional view along the A-A direction of FIG. 1 .

FIG. 5 is a partial enlarged schematic diagram of part B in FIG. 4 .

FIG. 6 is a schematic diagram of circuit connection of the present invention.

Description of main component symbols: 1. Outer transparent panel; 2. First transparent interlayer; 3. Lamp board; 30. PCB board; 300, circuit connection part; part; 32, substrate; 33, hollow slot; 4, second transparent interlayer; 5, inner transparent panel; 50, structural adhesive; 6, LED lamp beads; 7, profile; 70, wire slot; 8, system box; 80, network cable; 91, power board; 92, copper strip; 93, HUB board.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-6, a borderless LED display screen includes a screen body and a support member. The screen body includes an outer transparent panel 1, a first transparent sandwich layer 2, and a light panel 3 that are sequentially arranged from outside to inside. , the second transparent sandwich layer 4 and the inner transparent panel 5, the light board 3 is a hard light board or a soft light board. The material of the outer layer transparent panel 1 and the inner layer transparent panel 5 is glass, acrylic or PC. The first transparent interlayer 2 and the second transparent interlayer 4 are both PVB adhesive layers, PVC adhesive layers, TPU adhesive layers or EVA adhesive layers.

The light board 3 includes several PCB board groups that are seamlessly spliced in sequence along the longitudinal direction, and the PCB board group is composed of two PCB boards 30 arranged horizontally and symmetrically arranged with each other. The material of the PCB board 30 is PI, PET, FR4 or FPC. The front of the PCB board 30 is affixed with a plurality of LED lamp beads 6 distributed in an array and completely covering the PCB board 30 , and a circuit (not shown in the figure) connected to the LED lamp beads 6 is arranged on the PCB board 30 . The LED lamp beads 6 is a single color or RGB color SMD LED. The support member includes two profiles 7 arranged parallel to each other on the left and right sides of the back of the inner layer transparent panel 5 .

The two profiles 7 are respectively provided with a wire slot 70, and a power supply circuit and a system box 8 for controlling the display of the LED lamp beads 6 are fixedly installed in the wire slot 70. The power supply circuit and the system box 8 are respectively connected with the circuit on the PCB board 30. . The power circuit includes a power board 91 fixed in the wire slot, a number of copper strips 92 electrically connected to the power board 91 , and a number of HUB boards 93 electrically connected to the copper strip 92 and arranged along the length of the wire slot 70 . The power board 91 is externally connected to 220V commercial power, and the system box 8 is signal-connected to a plurality of HUB boards 93 through a network cable 80, and the HUB boards 93 are connected to the PCB board 30 through a number of plug terminals.

The PCB board 30 includes a main body portion 31 and a plurality of substrates 32 that are fixed on one side of the main body portion 31 and are evenly spaced along the length direction of the main body portion 31 . Any two adjacent substrates 32 are hollowed out to form hollow grooves 33 . . The top of the main body of the PCB board 30 is provided with a protrusion 301, and the bottom is provided with a groove 302 that matches the shape of the protrusion 301. Any two adjacent PCB board groups are matched by the protrusion 301 and the groove 302. Realize positioning splicing. The main parts of all PCB boards 30 are disposed outward, the outer transparent panel 1 , the first transparent interlayer 2 and the lamp board 3 have the same dimensions, and the inner transparent panel 5 and the second transparent interlayer 4 have the same dimensions. same. The width of the inner transparent panel 5 is smaller than the width of the outer transparent panel 1, and the main parts 31 of all the PCB boards 30 protrude outward relative to the edges of the inner transparent panel 5 and the second transparent interlayer 4 to form a connection with the power supply. The circuit connection part 300 to which the line/control line is connected.

The assembling process of the LED display screen of the present invention is as follows: cutting the outer transparent panel 1 and the inner transparent panel 5 of set size in advance, and coating the back of the outer transparent panel 1 with a layer of first layer that completely covers the outer transparent panel 1 The transparent interlayer 2 is coated with a second transparent interlayer 4 that completely covers the inner transparent panel 5 on the front side of the inner transparent panel 5 . A plurality of PCB boards 30 on which the LED lamp beads 6 are attached are seamlessly spliced on the back of the second transparent interlayer 4 to form the lamp board 3 . The inner transparent panel 5 with the second transparent interlayer 4 is press-fitted with the back of the light panel 3 and the circuit connection parts 300 of the PCB boards 30 on both sides are reserved, and the light panel 3 is heated by the method of the interlayer. Completely flush mounted into the sandwich. The left and right sides of the back of the inner transparent panel 5 are glued and fixed to the profiles 7 by the structural adhesive 50 respectively, and finally the power circuit and the control circuit are installed to complete the assembly of the entire LED display.

Although the present invention has been particularly shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are within the protection scope of the present invention.

Claims (10)

1. A borderless LED display screen, comprising a screen body and a support member, characterized in that: the screen body comprises an outer transparent panel, a first transparent sandwich layer, a light panel, a second transparent panel and a second The transparent sandwich layer and the inner transparent panel, the light board is made of several PCB boards that are seamlessly spliced to each other, and the front of the PCB board is affixed with a number of LED lamp beads distributed in an array and completely covering the PCB board, The PCB board is covered with a circuit connected to the LED lamp beads, the back of the inner transparent panel is fixed on the support by gluing, and the support is installed with a power circuit and a control system. The system box for LED lamp bead imaging, the power supply line and the system box are respectively connected with the circuits on the PCB board. 2 . The borderless LED display screen according to claim 1 , wherein the PCB board comprises a main body portion and a plurality of fixedly mounted on one side of the main body portion and evenly spaced along the length direction of the main body portion. 3 . A strip of substrates, and hollow grooves are formed between any two adjacent substrates. 3. A borderless LED display screen according to claim 2, characterized in that: the light board comprises several PCB board groups spliced in sequence along the longitudinal direction, and the PCB board groups are arranged horizontally and symmetrically arranged with each other The two PCB boards are spliced together. 4. A borderless LED display screen according to claim 3, characterized in that: the top of the main body of the PCB is provided with a protrusion, and the bottom is provided with a groove adapted to the shape of the protrusion , the positioning and splicing are realized between any two adjacent PCB board groups through the cooperation of the protrusions and the grooves. 5. A borderless LED display screen according to claim 3, characterized in that: the main body parts of all PCB boards are arranged outward, and the main body parts of the PCB boards are opposite to the inner transparent panel and the second transparent clip The edge of the adhesive layer protrudes outward to form a circuit connection portion. 6 . The borderless LED display screen according to claim 1 , wherein the support member comprises two profiles arranged parallel to each other on the left and right sides of the back of the inner layer transparent panel, and the interior of the profiles is provided with two profiles. 7 . A cable slot, the power supply line and the system box are respectively fixed and installed in the cable slot. 7 . The borderless LED display screen of claim 6 , wherein the power supply circuit comprises a power supply board fixed in the wire slot and a plurality of copper strips electrically connected to the power supply board. 8 . 2. Several HUB boards are electrically connected to the copper strips and arranged along the length of the wire slot. The power board is externally connected to the commercial power supply. The system box is connected to a number of HUB boards through a network cable. The terminal is connected with the PCB board. 8 . The borderless LED display screen according to claim 1 , wherein the material of the outer transparent panel and the inner transparent panel is glass, acrylic or PC. 9 . 9. A borderless LED display screen according to any one of claims 1-7, wherein the first transparent interlayer and the second transparent interlayer are PVB adhesive layers, PVC adhesive layers layer, TPU adhesive layer or EVA adhesive layer. 10 . The borderless LED display screen according to claim 1 , wherein the material of the PCB board is PI, PET, FR4 or FPC. 11 .

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