CN212541764U - LED lamp strip screen display system - Google Patents

Abstract

The utility model provides a LED lamp strip screen display system, which comprises a controller and at least two rows of lamp strips connected with the controller, and two adjacent rows of lamp strips connected with the same driving port of the controller in series, and two-way communication can be realized by adopting a lamp driving and sealing unit with an input/output self-adaptive port, the tail part and the tail part or the head part and the head part of the two adjacent rows of lamp strips are respectively connected through corresponding signal lines, so that the lamp strips can be simply and reliably connected when one driving port of the controller drives multiple rows of lamp strips, the length of the signal line between the lamp strips connected in series between the two adjacent rows is shortened, and further the length of the transmission path of an input signal provided by the driving port of the controller is shortened, thereby effectively avoiding various problems caused by overlong wiring for realizing the cross-row series connection of the lamp strips in the prior art, simplifying the system control mode, the stability of the display screen and the stability of communication are improved, and the anti-interference performance of the system is enhanced.

Description

LED lamp strip screen display system

Technical Field

The utility model relates to a LED shows technical field, in particular to LED lamp strip screen display system.

Background

The LED display screen is formed by combining the LED lamp strips at intervals, is usually used for building outer walls, stage LED rental display screens and the like due to the characteristics of light weight, small wind load, flexible installation and the like, is suitable for building ultra-large outdoor display screens, is a preferred product for creating landmark dynamic display landscapes, and belongs to a new generation of high-end LED display screen display products.

The traditional LED display screen is usually realized by adopting a mode of scanning and driving discrete LED lamp bead device patches and driving chips, namely, a mode of separating a lamp driver from a lamp driver is adopted. Because the LED lamp strip screen is special in application scene, a scanning mode cannot be used frequently, and the mode of driving and separating the lamp has the problems of too many external connection points of LED lamp beads, too high wiring density, high process complexity and the like, the LED lamp strip screen is usually realized by adopting a lamp driving, closing and sealing unit. Referring to fig. 1, in the structure of the lamp driving and sealing unit 100, a driving module and a plurality of LED lamp beads are sealed in the same package.

Referring to fig. 2, the LED light bar screen display system generally comprises a controller 20 and a plurality of light bars 10, as shown in fig. 2. Each row of light bars 10 is mainly formed by connecting a plurality of light driving and sealing units 100 in series. The controller 20 has a plurality of driving ports, and each driving port is connected to at least one light bar 10 to provide a corresponding input signal to the connected light bar 10 to drive the light driving sealing units 100 connected in series in the light bar 10. When the light bars 10 are arranged in rows, a driving port of the controller 20 can drive the multiple rows of light driving and sealing units 100 if the driving port of the controller 20 has the loading capacity. In the prior art, the driving of the multiple rows of the lamp driving and sealing units 100 by one driving port of the controller 20 is usually realized by the cross-row connection of the lamp strips 10, specifically, referring to fig. 3, the cross-row connection of the lamp strips 10 is usually realized by a Z-type connection manner In which two adjacent rows of the lamp strips 10 are connected end to end, that is, the signal port Out of the last-stage lamp driving and sealing unit 100 In the previous row is connected In series with the signal port In of the first-stage lamp driving and sealing unit 100 In the next row.

However, in practical applications of the LED light bar screen display system, the length of one row of light bars can often reach several tens of meters, which makes the wiring length for realizing the connection of light bars in series across rows too long, and the input signal output by the driving port of the controller is easy to distort and deform in a long-distance transmission path, which causes communication interference and affects normal display.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a LED lamp strip screen display system to the input signal that the drive port of solution controller exported distorts easily in long distance transmission path and warp, causes communication interference, influences the problem of normal demonstration.

In order to solve the technical problem, the utility model provides a LED lamp strip screen display system, including controller and two at least lines of lamp strips, every line the lamp strip is driven to close including two at least lamps of series connection in proper order and is sealed the unit, and every line the one end of lamp strip does the prelude of lamp strip, the other end do the afterbody of lamp strip, the prelude of two at least lines of lamp strips is located same one side, wherein, the controller has at least a drive port and two at least lines the lamp strip is series connection in proper order, and with same two adjacent lines of drive port series connection the afterbody and the afterbody of lamp strip or prelude link to each other through corresponding signal line.

Optionally, each of the lamp driver enclosure units communicates bi-directionally.

Optionally, each of the lamp driving sealing units includes two sets of signal ports for implementing bidirectional communication, each set of signal ports having at least one signal port.

Optionally, the two groups of signal ports of each lamp driving and sealing unit are arranged on two opposite sides of the lamp driving and sealing unit, and each signal port of the two groups of signal ports is arranged in a one-to-one correspondence manner; when the signal port on one side of the two opposite sides of each lamp driving and sealing unit receives a signal before the signal port on the other side, the signal port on one side is automatically used as the signal input port of the lamp driving and sealing unit, and the signal port on the other side is automatically used as the signal output port of the lamp driving and sealing unit.

Optionally, each group of signal ports of each lamp driving and sealing unit in two adjacent rows of lamp strips connected in series with the same driving port has k signal ports, k is greater than or equal to 2, and when the tail portion and the tail portion or the head portion and the head portion of the two adjacent rows of lamp strips are connected through corresponding signal lines, the 1 st to k signal ports in one group of signal ports of the corresponding lamp driving and sealing unit in one row of lamp strips are respectively connected with the 1 st to k signal ports in one group of signal ports of the corresponding lamp driving and sealing unit in the other row of lamp strips in a one-to-one correspondence manner.

Optionally, when each group of signal ports of each lamp driving and sealing unit in two adjacent rows of lamp bars connected in series with the same driving port has at least two signal ports, signal lines for connecting the head and the head or the tail and the tail of the two adjacent rows of lamp bars are not crossed, and each lamp driving and sealing unit in the two adjacent rows of lamp bars determines the input and output properties and the corresponding signal of each signal port according to the signal source direction.

Optionally, two adjacent rows of light bars connected with the head part are arranged from top to bottom, in the two adjacent rows of light bars, each group of signal ports of each lamp driving and sealing unit has k signal ports, k is greater than or equal to 2, and the 1 st to k signal ports in one group of signal ports of the first lamp driving and sealing unit in the previous row of light bars are respectively connected with the k to 1 st signal ports in one group of signal ports of the first lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner.

Optionally, two adjacent rows of light bars connected with the tail portion are arranged from top to bottom, in the two adjacent rows of light bars, each group of signal ports of each lamp driving and sealing unit is provided with k signal ports, k is larger than or equal to 2, and the 1 st to k signal ports in one group of signal ports of the last lamp driving and sealing unit in the last row of light bars are respectively connected with the k to 1 st signal ports in one group of signal ports of the last lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner.

Optionally, each lamp driving and sealing unit comprises a driving module and at least one LED lamp bead, each lamp bead is connected to the driving module, and each signal port is disposed on the driving module.

Optionally, each of the drive ports provides at least one input signal.

Optionally, the controller has a plurality of driving ports, and the light bars connected to all the driving ports are the same, or at least one of the light bars connected to at least one of the driving ports is different from the other driving ports, where the difference includes at least one of the number of rows of the connected light bars, the number of light driving and sealing units in the light bars, and the number of signal ports of each group of the light driving and sealing units.

Optionally, the controller and the light bars are distributed on different PCB boards, and the controller and the light bars are connected by flat cables; or the controller and the light bars are distributed on the same PCB, and the controller is connected with the light bars through wiring on the PCB.

Optionally, at least all the light bars connected in series with the same driving port are distributed on the same PCB, and the signal lines between two adjacent rows of light bars connected in series with the same driving port are wiring lines printed on the PCB.

Optionally, the signal lines between the light bars connected in series with the same driving port are located in the same layer of the PCB.

Optionally, the PCB is a rigid board or a flexible board.

Compared with the prior art, the utility model provides a technical scheme has following beneficial effect:

1. in the LED light bar screen display system, two adjacent rows of light bars connected in series with the same driving port of a controller can realize the bidirectional communication by adopting a light driving and sealing unit with an input/output self-adaptive port, the tail part and the tail part or the head part and the head part of the two adjacent rows of light bars are respectively connected through corresponding signal lines, and particularly, the light bars can be sequentially connected in series through PCB wiring, so that the light bars can be simply and reliably connected when one driving port of the controller drives a plurality of rows of light bars, the length of the signal line between the two adjacent rows of light bars connected in series is shortened, the length of a transmission path of an input signal provided by the driving port of the controller is further shortened, various problems caused by overlong wiring for realizing cross-row series connection in the prior art can be effectively avoided, and the system control mode is simplified, the stability of the display screen and the stability of communication are improved, and the anti-interference performance of the system is enhanced.

2. When each group of signal ports of each lamp driving and sealing unit has at least two signal ports in two adjacent rows of lamp strips connected through a wiring head part and a head part or a tail part and a tail part on the PCB, each stage of lamp driving and sealing unit can determine the corresponding position of an input/output port of a multi-path signal according to the detection result of the signal source direction, signal lines between two adjacent rows of lamp strips connected through the head part and the head part or connected through the tail part and the tail part are not crossed, and wiring can be carried out on the same layer of the PCB, so that the number of PCB layers can be prevented from being increased, and the wiring difficulty and the manufacturing cost of the PCB can be reduced.

Drawings

Fig. 1 is a schematic structural diagram of a lamp driving and sealing unit.

Fig. 2 is a schematic structural diagram of a conventional LED light bar screen display system.

Fig. 3 is a schematic structural diagram of another conventional LED light bar screen display system.

Fig. 4 is an exemplary schematic structural diagram of a LED light bar screen display system according to the first embodiment of the present invention.

Fig. 5 is an exemplary schematic structural diagram of a LED light bar screen display system according to the second embodiment of the present invention.

Fig. 6 and fig. 7 are two exemplary structural schematic diagrams of a LED light bar screen display system according to a third embodiment of the present invention.

Fig. 8 is an exemplary schematic structural diagram of a LED light bar screen display system according to the fourth embodiment of the present invention.

Detailed Description

The inventor researches and discovers that in the existing LED light bar screen display system, when the light bars are arranged in rows, under the condition that the driving port of the controller allows loading capacity, the cross-row connection of the light bars is usually realized by a Z-type connection manner that two adjacent rows of light bars are connected end to end, and the light bars connected in cross-row can be connected in series to a driving port of the controller, so that the driving of the driving port of the controller to multiple rows of light driving and sealing units is realized. In this way, the wiring between two adjacent rows of light bars connected in series across rows is too long, which causes the input signal provided by the driving port of the controller to be easily distorted and deformed in a long-distance transmission path, thereby causing communication interference and affecting normal display.

Based on the above, the utility model provides a display system of LED lamp strip screen, which has the core idea that two adjacent rows of lamp strips connected in series with the same driving port of the controller, by connecting the tail portion and the tail portion of the corresponding signal line (which may be called tail-to-tail connection for short) or connecting the head portion and the head portion (which may be called head-to-head connection for short), therefore, when one driving port of the controller drives a plurality of rows of light bars, the light bars in each row can be simply and reliably connected, the length of a signal wire between two adjacent rows of light bars connected in series is shortened, and then shorten the length of the transmission path of the input signal that the drive port of controller provided, can effectively avoid among the prior art being used for realizing that the wiring of lamp strip strides row series connection is overlength and various problems that bring, simplify the system control mode, improve display screen stability and communication stability, strengthen the anti-interference performance of system.

The technical solution proposed by the present invention will be further described in detail with reference to fig. 4 to 8 and the corresponding specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Herein, one drive port of the controller, which may provide at least one input signal.

Example one

Referring to fig. 4, the present embodiment provides an LED light bar screen display system, which mainly includes a controller 21 and a plurality of rows of light bars 11 connected to the controller 21, where each row of light bars 11 includes a plurality of light driving and sealing units 110 sequentially connected in series. The number of rows of the light bars 11 is not less than 2, and the number of the light driving and sealing units 110 in each row of the light bars 11 is not less than 2. Each row of the light bars 11 has one end serving as a head part of the light bar 11 and the other end serving as a tail part of the light bar 11, the head parts of the light bars 11 in each row are located on the same side, the tail parts of the light bars 11 in each row are located on the other side, the controller 21 has at least one driving port which is sequentially connected with at least two rows of the light bars 11 in series, and the tail parts or the head parts of two adjacent rows of the light bars 11 which are connected with the same driving port of the controller 21 in series are connected through corresponding.

As shown in fig. 1, each lamp driving and sealing unit 110 has a driving module and at least one LED lamp bead in the same package, each LED lamp bead is connected to the driving module, and each signal port of the lamp driving and sealing unit 110 is disposed on the driving module.

It should be noted that each lamp driving and sealing unit 110 in each row of light bars 11 of the present embodiment is bidirectional, and the left side and the right side of the lamp driving and sealing unit are both provided with a signal port, the two signal ports have a function of port left-right adaptive input/output, and whether the two signal ports are used as a signal input port or a signal output port of the lamp driving and sealing unit 110 can be automatically identified and determined by the coming direction of an external signal by the lamp driving and sealing unit 110. Specifically, each lamp driving sealing unit 110 can simultaneously detect whether the signal ports on the left and right sides receive the corresponding input signals, the signal port that detects the input signal is determined as the signal input port In, and the other signal port is automatically determined as the signal output port Out. That is, when the signal port on the right side of the lamp driving sealing unit 110 detects the input signal first, the signal port on the right side is used as the signal input port In, and the signal port on the left side is used as the signal output port Out; if the left signal port detects the input signal first, the left signal port is used as a signal input port In, and the right signal port is used as a signal output port Out.

Referring to fig. 4, as an example, in the LED light bar screen display system, a driving port of the controller 21 is connected in series with M rows of light bars 11, each row of light bars 11 has N light driving sealing units 110, M is not less than 2, N is not less than 2, M may be equal to N or not equal to N, and headers of the M rows of light bars 11 are located at the same side of the controller 11. In the M rows of light bars 11, one end of each row of light bars 11 is a head portion, and the other end is a tail portion, N lamp driving and sealing units 110 in each row of light bars 11 are numbered from left to right according to the sequence of 1, 2, 3, …, and N, and the N lamp driving and sealing units 110 in each row of light bars 11 are sequentially connected in series.

Specifically, M rows of light bars 11 connected to one driving port of the controller 20 are sequentially arranged from top to bottom, and the driving port is connected to the signal port on the left side of the lamp driving and sealing unit 1 in the first row of light bars 11 through the signal Line group Line1, the lamp driving and sealing units 1 to N in the first row of light bars 11 are sequentially connected in series from left to right, the signal port on the right side of the lamp driving and sealing unit N in the first row of light bars 11 is connected to the signal port on the right side of the lamp driving and sealing unit N in the second row of light bars 11 through the signal Line group Line2, so that the tail of the first row of light bars 11 is connected to the tail of the second row of light bars 11, the lamp driving and sealing units N to 1 in the second row of light bars 11 are sequentially connected in series from right to left, the signal port on the left side of the lamp driving and sealing unit 1 in the second row of light bars 11 is connected to the signal port on the left side of the lamp driving and sealing unit 1 in the third, the connection between the head part of the second row of light bars 11 and the head part of the third row of light bars 11 is realized, … …, and the like, so that the series connection of the M rows of light bars is completed. Since the driving port of the controller 21 provides an input signal and each group of signal ports of each lamp driving and sealing unit 110 has only one signal port, the signal Line groups Line1 to LineM have one signal Line respectively.

When the driving port of the controller 21 sends an input signal to the signal1 lamp driving and sealing unit of the first row of light bars 11, the signal1 lamp driving and sealing unit 110 of the first row of light bars 11 detects that the signal port on the left side thereof has the input signal, and then the signal port on the left side thereof is used as a signal input port In, the signal port on the right side thereof is automatically used as a signal output port Out, and the signal1 lamp driving and sealing unit 110 of the first row of light bars 11 also outputs a corresponding signal to the signal2 lamp driving and sealing unit 110 through the signal port on the right side; the signal2 lamp driving and sealing unit 110 of the first row of light bars 11 detects that the signal port on the left side has a corresponding input signal input, and then the signal port on the left side is used as a signal input port In, and the signal port on the right side is automatically used as a signal output port Out; and so on. At this time, the signal ports on the left side of each lamp driving sealing unit 110 of the first row of lamp strips 11 are all signal input ports In, and the signal ports on the right side are all signal input ports In, because the tail portions of the first row of lamp strips 11 and the tail portions of the second row of lamp strips 11 are connected with each other through the signal Line group Line2, the signal output by the signal port on the right side of the N lamp driving sealing unit 110 of the first row of lamp strips 11 is firstly transmitted to the N lamp driving sealing unit 110 of the second row of lamp strips 11 through the signal Line group Line2, after the N lamp driving sealing unit 110 of the second row of lamp strips 11 detects that the signal input is present at the right signal port, the right signal port thereof is used as the signal input port In, the left signal port thereof is used as the signal output port Out, each lamp driving sealing unit of the second row of lamp strips 11 determines the input and output properties of the two signal ports on the left and right sides thereof after detecting that the, the input signal is sequentially transmitted from right to left to the lamp driving sealing units 110, … … of the second row of lamp strips 11, and so on, and the input signal can be transmitted to each row of lamp strips 11 in the M rows of lamp strips 11 connected in series. Wherein, the lamp driving and sealing unit 1 110 of the first row of light bars 11 is a first stage lamp driving and sealing unit of the first row of light bars 11 and is a head portion of the first row of light bars 11, the lamp driving and sealing unit N of the first row of light bars 11 is a last stage lamp driving and sealing unit of the first row of light bars 11 and is a tail portion of the first row of light bars 11, the lamp driving and sealing unit N of the second row of light bars 11 110 is a first stage lamp driving and sealing unit of the second row of light bars 11 and is a tail portion of the second row of light bars 11, the lamp driving and sealing unit 1 of the second row of light bars 11 is a last stage lamp driving and sealing unit of the second row of light bars 11 and is a head portion of the third row of light bars 11, the lamp driving and sealing unit N of the third row of light bars 11 110 is a last stage lamp driving and sealing unit of the third row of light bars 11 and is a tail portion of the third row of light bars 11, and so on.

In the LED light bar screen display system of this example, the controller 21 and the M-row light bars 11 may be distributed on different PCBs (i.e., printed circuit boards), and at this time, the driving port of the controller 21 is connected to the first row of light bars in the M-row light bars 11 through a flat cable, or the controller 21 and the M-row light bars 11 are distributed on the same PCB, and at this time, the driving port of the controller 21 is connected to the first row of light bars in the M-row light bars 11 through a wiring on the PCB. The M lines of the light bars 11 are distributed on the same PCB, and the signal Line groups Line 2-LineM are the same layer of wiring printed on the PCB. The PCB can be a hard board or a flexible board.

In this example, since each lamp driving and sealing unit 110 adopts an input/output adaptive signal port to complete bidirectional communication, only the wiring of the PCB needs to complete the sequential serial connection of each lamp driving and sealing unit 110 of each row of lamp strips 110, and the head or tail of two adjacent rows of lamp strips 11 are connected, the input signal provided by the driving port of the controller 21 can be transmitted in stages in the cascaded N × M lamp driving and sealing units 110, so that one driving port of the controller can be simply and reliably connected without long wiring when driving multiple rows of lamp strips, and further the length of the transmission path of the input signal provided by the driving port of the controller is shortened, thereby effectively avoiding various problems caused by the wiring of the cross-row serial connection in the prior art, simplifying the system control mode, improving the stability of the display screen and improving the communication stability, the interference immunity of the system is enhanced.

It should be noted that, in the above example, the number of the lamp driving and sealing units in each row of the lamp strips 11 connected in series by one driving port of the controller 21 is the same, but the technical solution of the present embodiment is not limited thereto, and in other examples of the present embodiment, the number of the lamp driving and sealing units in at least one row of the lamp strips 11 may be different from the number of the lamp driving and sealing units in other rows of the lamp strips 11 connected in series to the same driving port. In other examples of the present embodiment, the controller 21 may also have more than one driving port, and all driving ports have the same loading capacity, that is, the structures of the light bars 11 connected to the driving ports are the same, where the same structure of the light bars 11 connected to any two driving ports means that the number of rows of the light bars 11 connected to the two driving ports is the same, the number of the light driving and sealing units 110 in the light bars 11 is the same, and the number of signal ports of each group of the light driving and sealing units 110 is the same.

Example two

As shown in fig. 5, the present embodiment provides an LED light bar screen display system, which mainly comprises a controller 22 and a plurality of rows of light bars 12 connected to the controller 20, wherein each row of light bars 12 includes a plurality of light driving and sealing units 120 sequentially connected in series. The number of rows of light bars 12 is not less than 2, and the number N of light driving and sealing units 120 in each row of light bars 12 is not less than 2. Each row of the light bars 12 has one end serving as a head part of the light bar 12 and the other end serving as a tail part of the light bar 12, the head parts of the light bars 12 in each row are located on the same side, and the tail part is located on the other side, the controller 22 has at least one driving port which is sequentially connected with at least two rows of the light bars 12 in series, and the tail part are connected through corresponding signal lines, or the head part and the head part are connected. In the LED light bar screen display system of this embodiment, a driving port of the controller 22 is connected to M (M ≧ 2) rows of light bars 12 connected in series through a signal Line group Line1 (not shown), the controller 22 and the M (M ≧ 2) rows of light bars 12 connected in series to the driving port of the controller 22 may be distributed on different PCB boards (i.e., printed circuit boards), at this time, the signal Line group Line1 may be a flat cable, i.e., the driving port of the controller 22 is connected to a first row of light bars in the M rows of light bars 12 through a flat cable, or the controller 22 and the M rows of light bars 12 are distributed on the same PCB board, at this time, the signal Line group Line1 is a wiring on the PCB board, i.e., the driving port of the controller 22 is connected to the first row of light bars in the M rows of light bars 12 through a wiring on the. The M rows of light bars 12 are distributed on the same PCB, and signal Line groups Line 2-LineM (not shown) are the same layer of wiring printed on the PCB. The PCB can be a hard board or a flexible board.

The difference between the present embodiment and the first embodiment is that there are k input signals provided by the driving ports of the controller 22, where k is greater than or equal to 2, and at this time, correspondingly, each lamp driving sealing unit 120 in each row of the light bars 12 connected in series with the driving port is provided with two sets of signal ports, each set of signal ports has k signal ports, and the two sets of signal ports are in one-to-one correspondence, where each signal port of one set of signal ports receives one input signal and each signal port of the other set of signal ports outputs one signal correspondingly. When the two adjacent rows of light bars 12 are arranged in the vertical direction, and the tails of the two adjacent rows of light bars 12 are connected through the corresponding signal line groups, the 1 st to k th signal ports of a group of signal ports of the last lamp driving and sealing unit 120 in the last light bar 12 in the previous row are respectively connected with the 1 st to k th signal ports of a group of signal ports of the last lamp driving and sealing unit 120 in the next row of light bars 12 in a one-to-one correspondence manner. When the two adjacent rows of light bars 12 are arranged in the vertical direction, and the head parts of the two adjacent rows of light bars 12 are connected through the corresponding signal line groups, the 1 st to k th signal ports of a group of signal ports of the first lamp driving and sealing unit 120 in the previous row of light bars 12 are respectively connected with the 1 st to k th signal ports of a group of signal ports of the first lamp driving and sealing unit 120 in the next row of light bars 12 in a one-to-one correspondence manner. As an example, as shown in fig. 5, one driving port of the controller 22 provides two input signals signal1 and signal2, the driving port is connected to M rows of light bars 12 connected in series through a signal Line group Line1 composed of a signal Line11 and a signal Line12, each row of light bars 12 in the M rows of light bars 12 has N lamp driving sealing units 120, M is not less than 2, N is not less than 2, M may be equal to N or not equal to N, and two signal ports capable of adaptive input/output, i.e., k is 2, are respectively disposed on the left and right sides of each lamp driving sealing unit 120. In M rows of light bars 12, the left end of each row of light bars 12 is a head portion, the right end is a tail portion, N lamp driving and sealing units 120 in each row of light bars 12 are numbered from left to right according to the sequence of 1, 2, 3, …, and N, and the N lamp driving and sealing units 120 in each row of light bars 12 are sequentially connected in series.

Specifically, the M rows of light bars 12 are sequentially arranged from top to bottom, and two signal ports on each side of the lamp driving sealing unit 120 are an upper signal port and a lower signal port, respectively. The driving port of the controller 22 is connected to the two signal ports on the left side of the lamp driving and sealing unit No. 1 in the first row of light bars 12 through a signal Line group Line1 composed of signal lines Line11 and Line12, the lamp driving and sealing units No. 1 to N in the first row of light bars 12 are sequentially connected in series from left to right, the upper signal port on the right side of the lamp driving and sealing unit No. N120 in the first row of light bars 12 is connected to the upper signal port on the right side of the lamp driving and sealing unit No. N120 in the second row of light bars 12 through a signal Line21, the lower signal port on the right side of the lamp driving and sealing unit No. N120 in the first row of light bars 12 is connected to the lower signal port on the right side of the lamp driving and sealing unit No. N120 in the second row of light bars 12 through a signal Line22, so as to realize the connection between the tail of the first row of light bars 12 and the tail of the second row of light bars 12, at this time, the signal Line21 crosses the signal Line22, the lamp driving, the upper signal port on the left side of the No. 1 lamp driving and sealing unit 120 of the second row lamp bar 12 is connected with the upper signal port on the left side of the No. 1 lamp driving and sealing unit 120 of the third row lamp bar 12 through a signal Line31, the lower signal port on the left side of the No. 1 lamp driving and sealing unit 120 of the second row lamp bar 12 is connected with the lower signal port on the left side of the No. 1 lamp driving and sealing unit 120 of the third row lamp bar 12 through a signal Line32, connection of the head part of the second row lamp bar 12 and the head part of the third row lamp bar 12 is achieved, … … and so on, series connection of the M row lamp bars is completed. The signal Line group Line2 is formed by the signal Line21 and the signal Line22 which are used for connecting the tail part of the first Line light bar 12 and the tail part of the second Line light bar, the signal Line31 and the signal Line32 which are used for connecting the head part of the second Line light bar 12 and the head part of the third Line light bar form the signal Line group Line3, the signal Line41 and the signal Line42 which are used for connecting the tail part of the third Line light bar 12 and the tail part of the fourth Line light bar form the signal Line group Line4, and by analogy, the signal Line group Line is formed by the signal Line1 and the signal Line eM2 which are used for connecting the head part of the M-1 Line light bar 12 and the head part of the M Line light bar.

When the driving port of the controller 22 provides a set of input signals to the signal1 lamp driving and sealing unit of the first row of light bars 12, the set of input signals includes input signals signal1 and signal2, the signal1 lamp driving and sealing unit 120 of the first row of light bars 12 detects that the upper and lower signal ports on the left side of the first row of light bars 12 have input signals, and then the upper and lower signal ports on the left side of the first row of light bars are respectively used as signal input ports In1 and In2, the upper and lower signal ports on the right side of the first row of light bars are automatically used as signal output ports Out1 and Out2, and the signal1 lamp driving and sealing unit 120 of the first row of light bars 12 further outputs corresponding signals to the signal2 lamp driving and sealing unit 120 through the upper and lower signal ports on the right; the signal2 lamp driving and sealing unit 120 of the first row of light bars 12 detects that the upper and lower signal ports on the left side have corresponding input signals, and then the upper and lower signal ports on the left side are respectively used as the signal input ports In1 and In2, and the upper and lower signal ports on the right side are automatically used as the signal output ports Out1 and Out 2; and so on. Since the tail of the first row of light bars 12 and the tail of the second row of light bars 12 are connected to each other through the signal lines Line21 and Line22, the signal output from the upper signal port on the right side of the N-type lamp driving and sealing unit 120 of the first row of light bars 12 is transmitted to the upper signal port on the right side of the N-type lamp driving and sealing unit 120 of the second row of light bars 12 through the signal Line21, the signal output from the lower signal port on the right side of the N-type lamp driving and sealing unit 120 of the first row of light bars 12 is transmitted to the lower signal port on the right side of the N-type lamp driving and sealing unit 120 of the second row of light bars 12 through the signal Line22, after the N-type lamp driving and sealing unit 120 of the second row of light bars 12 detects that the upper and lower signal ports on the right side have corresponding input signals, the upper signal port on the right side is used as the signal input port In1, the lower signal port on the right side is used as the signal input, the lower signal port on the left side is used as a signal output port Out2, each lamp driving sealing unit 120 of the second row of light bars 12 determines the input and output properties of the two signal ports on the left and right sides after detecting that the two signal ports on the right side have signal inputs, and so on, the input signals are sequentially transmitted to the lamp driving sealing units 120 of the second row of light bars 12 from right to left. Since the head part of the second row of light bars 12 and the head part of the third row of light bars 12 are connected to each other through the signal lines Line31 and Line32, the signal output from the upper signal port on the left side of the lamp driver sealing unit 1 120 of the second row of light bars 12 is transmitted to the upper signal port on the left side of the lamp driver sealing unit 1 of the third row of light bars 12 through the signal Line31, the signal output from the lower signal port on the left side of the lamp driver sealing unit 1 120 of the second row of light bars 12 is transmitted to the lower signal port on the left side of the lamp driver sealing unit 1 of the third row of light bars 12 through the signal Line32, after the lamp driver sealing unit 1 of the third row of light bars 12 detects that the upper and lower signal ports on the left side have corresponding input signals, the upper signal port on the left side is used as the signal input port In1, the lower signal port on the left side is used as the signal input port In2, and the upper signal port on the right side is, the lower signal port on the right serves as signal output ports Out2, … …, and so on, and the input signal can be transmitted to each row of light bars 12 in the M rows of light bars 12 connected in series. The two signal ports on the left side of the 1-N lamp driving and sealing unit 120 of the first row of lamp strips 12 are used as signal input ports In1 and In2, the two signal ports on the right side are automatically used as signal output ports Out1 and Out2, the two signal ports on the right side of the 1-N lamp driving and sealing unit 120 of the second row of lamp strips 12 are used as signal input ports In1 and In2, the two signal ports on the left side are automatically used as signal output ports Out1 and Out2, the two signal ports on the left side of the 1-N lamp driving and sealing unit 120 of the third row of lamp strips 12 are used as signal input ports In1 and In2, the two signal ports on the right side are automatically used as signal output ports Out1 and Out2, and so on.

The LED lamp strip screen display system of the embodiment can be suitable for the situation that one driving port of a controller can provide a plurality of input signals, and can shorten the length of a signal line between two adjacent lines of lamp strips, so as to shorten the length of a transmission path of the input signals provided by the driving port of the controller, thereby effectively avoiding various problems caused by overlong wiring of cross-row series connection in the prior art, simplifying the control mode of the system, improving the stability and the communication stability of a display screen, and enhancing the anti-interference performance of the system. However, in this embodiment, signal lines between two adjacent rows of light bars connected in series to the same driving port of the controller intersect, which increases the wiring difficulty and manufacturing cost on the PCB.

EXAMPLE III

In order to improve the technical solution of the second embodiment and avoid the crossing of signal lines between two adjacent rows of light bars connected in series with the same driving port of the controller, this embodiment provides an LED light bar screen display system, please refer to fig. 6 and 7, which mainly comprises a controller 23 and a plurality of rows of light bars 13 connected to the controller 23, and each row of light bars 13 includes a plurality of light driving sealing units 130 connected in series in sequence. The number of rows of the light bars 13 is not less than 2, and the number N of the light driving and sealing units 130 in each row of the light bars 13 is not less than 2. One end of each row of the light bars 13 is a head part of the light bar 13, the other end of each row of the light bars 13 is a tail part of the light bar 13, the head parts of the light bars 13 in each row are positioned on the same side, and the tail parts of the light bars 13 in each row are positioned on the other side. The controller 23 is provided with at least one driving port which is sequentially connected with at least two rows of light bars 13 in series, and two adjacent rows of light bars 13 which are connected with the same driving port of the controller 23 in series are connected with the tail part or the head part of the same signal line. In addition, the driving port of the controller 23 provides a plurality of input signals, the lamp driving and sealing unit 130 in each row of the lamp strips 13 is provided with two sets of signal ports, each set of signal ports has a plurality of adaptive input/output signal ports, the number of each set of signal ports of each lamp driving and sealing unit 130 is the same as the number of the input signals, and the two sets of signal ports are in one-to-one correspondence.

In the LED light bar screen display system of this embodiment, a driving port of the controller 22 is connected to M (M ≧ 2) rows of light bars 12 connected in series through a signal Line group Line1 (not shown), the controller 23 and the M (M ≧ 2) rows of light bars 13 connected in series to the driving port of the controller 23 may be distributed on different PCB boards (i.e., printed circuit boards), at this time, the signal Line group Line1 may be a flat cable, i.e., the driving port of the controller 23 is connected to a first row of light bars in the M rows of light bars 13 through a flat cable, or the controller 23 and the M rows of light bars 13 are distributed on the same PCB board, at this time, the signal Line group Line1 is a wiring on the PCB board, i.e., the driving port of the controller 23 is connected to the first row of light bars 13 in the M rows of light bars 13 through a wiring on the PCB. The M rows of the light bars 13 are distributed on the same PCB, all signal lines in a signal line group between two adjacent rows of the light bars 13 with the tail parts connected with the tail parts or the head parts connected with the head parts are not crossed, and the signal lines are printed on the same layer of the PCB. The PCB can be a hard board or a flexible board.

The present embodiment is different from the second embodiment in that signal lines between two adjacent rows of light bars 13 connected with the tail portion and the tail portion or connected with the head portion and the head portion have no crossing, and the signal port of each light driving and sealing unit 130 needs to determine not only its input or output type, but also the corresponding signal received or output by it. Specifically, each lamp driving sealing unit 130 automatically determines the definitions of its two sets of signal ports (including input/output properties and corresponding signals) according to the signal input direction, that is, automatically determines one of the two sets of signal ports as an input signal port and the other set as an output signal port, and determines whether the definitions of the signals transmitted by the signal ports need to be changed according to the signal input direction. Assuming that each set of signal ports of each lamp driving sealing unit of each row of lamp bars 13 connected in series with the same driving port has k signal ports, the driving port provides k input signals, k is larger than or equal to 2, when the head part and two adjacent rows of light bars connected with the head part are arranged from top to bottom, in the two adjacent rows of light bars, the 1 st to k th signal ports in a group of signal ports of the first lamp driving and sealing unit in the previous row of light bars are respectively connected with the k to 1 st signal ports in a group of signal ports of the first lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner, a signal received by the first signal port of the first lamp driving and sealing unit in the previous row of light bars corresponds to a first input signal provided by a driving port of the controller, and a signal received by the first signal port of the first lamp driving and sealing unit in the next row of light bars corresponds to a k input signal provided by the driving port of the controller. When two adjacent rows of light bars connected with the tail portion are arranged from top to bottom, in the two adjacent rows of light bars, the 1 st to k th signal ports in a group of signal ports of the last lamp driving and sealing unit in the last row of light bars are respectively connected with the k to 1 st signal ports in a group of signal ports of the last lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner, a signal received by the first signal port of the last lamp driving and sealing unit in the last row of light bars corresponds to the 1 st input signal provided by the driving port of the controller, a signal received by the first signal port of the last lamp driving and sealing unit in the next row of light bars corresponds to the k th input signal provided by the driving port of the controller, and so on.

As an example, referring to fig. 6, a driving port of the controller 23 provides two input signals signal1 and signal2, the driving port is connected to M rows of light bars 13 connected in series through a signal Line group Line1 composed of a signal Line11 and a signal Line12, each row of light bars 13 in the M rows of light bars 13 has N lamp driving sealing units 130, M is not less than 2, N is not less than 2, M may be equal to N or not equal to N, and two signal ports capable of adaptive input/output, i.e., k is 2, are respectively disposed on the left and right sides of each lamp driving sealing unit 130. The left end of each row of light bars 13 is a head part, the right end is a tail part, the N lamp driving and sealing units 130 in each row of light bars 13 are numbered from left to right according to the sequence of 1, 2, 3, … and N, and the N lamp driving and sealing units 130 in each row of light bars 13 are sequentially connected in series. The driving ports of the controller 23 are connected to the two signal ports on the left side of the lamp driving and sealing unit 1 in the first row of light bars 13 through signal lines Line11 and Line12, the lamp driving and sealing units 1 to N130 in the first row of light bars 13 are sequentially connected in series from left to right, the upper signal port on the right side of the lamp driving and sealing unit N130 in the first row of light bars 13 is connected to the lower signal port on the right side of the lamp driving and sealing unit N130 in the second row of light bars 13 through signal Line21, the lower signal port on the right side of the lamp driving and sealing unit N130 in the first row of light bars 13 is connected to the upper signal port on the right side of the lamp driving and sealing unit N130 in the second row of light bars 13 through signal Line22, so that the tail end of the first row of light bars 13 is connected to the second row of light bars 13, the lamp driving and sealing units N to 1 in the second row of light bars 13 are sequentially connected in series from right to left, and the upper signal port on the left side of the lamp driving and sealing unit N31 in the left side of the lamp driving and sealing unit N13 in 130, the lower signal port on the left side of the No. 1 lamp driving and sealing unit 130 of the second row of lamp strips 13 is connected with the upper signal port on the left side of the No. 1 lamp driving and sealing unit 130 of the third row of lamp strips 13 through a signal Line32, so that the first connection of the second row of lamp strips 13 and the third row of lamp strips 13 is realized, … …, and so on, and the series connection of the M rows of lamp strips is completed. The signal Line group Line2 is formed by the signal Line21 and the signal Line22 which are used for connecting the tail part of the first Line light bar 12 and the tail part of the second Line light bar, the signal Line31 and the signal Line32 which are used for connecting the head part of the second Line light bar 12 and the head part of the third Line light bar form the signal Line group Line3, the signal Line41 and the signal Line42 which are used for connecting the tail part of the third Line light bar 12 and the tail part of the fourth Line light bar form the signal Line group Line4, and by analogy, the signal Line group Line is formed by the signal Line1 and the signal Line eM2 which are used for connecting the head part of the M-1 Line light bar 12 and the head part of the M Line light bar. The signal lines in each signal line group are not crossed.

In this example, when the driving port of the controller 23 sends a set of input signals signal1 and signal2 to the signal1 lamp driving and sealing unit 130 of the first row of light bars 13, the signal1 lamp driving and sealing unit 130 of the first row of light bars 13 detects that the upper and lower signal ports on the left side of the first row of light bars 13 have input signals, and then the upper and lower signal ports on the left side of the first row of light bars are respectively used as the signal input ports In1 and In2, the upper and lower signal ports on the right side of the first row of light bars are automatically used as the signal output ports Out1 and Out2, and the signal1 lamp driving and sealing unit 130 of the first row of light bars 13 further outputs corresponding signals to the signal2 lamp driving and sealing unit 130 through the upper and lower signal ports on the right; the signal2 lamp driving and sealing unit 130 of the first row of light bars 13 detects that the upper and lower signal ports on the left side have corresponding input signals, and then the upper and lower signal ports on the left side are respectively used as the signal input ports In1 and In2, and the upper and lower signal ports on the right side are automatically used as the signal output ports Out1 and Out 2; and so on. Since the tail of the first row of light bars 13 and the tail of the second row of light bars 13 are connected to each other through the signal lines Line21 and Line22, the signal output from the upper signal port on the right side of the N-type lamp driving and sealing unit 130 of the first row of light bars 13 is transmitted to the lower signal port on the right side of the N-type lamp driving and sealing unit 130 of the second row of light bars 13 through the signal Line21, the signal output from the lower signal port on the right side of the N-type lamp driving and sealing unit 130 of the first row of light bars 13 is transmitted to the upper signal port on the right side of the N-type lamp driving and sealing unit 130 of the second row of light bars 13 through the signal Line22, after the N-type lamp driving and sealing unit 120 of the second row of light bars 13 detects that the upper and lower signal ports on the right side have corresponding input signals, the upper signal port on the right side is used as the signal input port In2, the lower signal port on the right side is used as the signal input, the lower signal port on the left side is used as a signal output port Out1, each lamp driving sealing unit 130 of the second row of light bars 13 determines the input and output properties and the definitions of the corresponding signals of the two signal ports on the left and right sides after detecting that the two signal ports on the right side have signal inputs, and so on, the input signals are sequentially transmitted from right to left to the lamp driving sealing units 130 of the second row of light bars 13. Since the head of the second row light bar 13 and the head of the third row light bar 13 are connected to each other through the signal lines Line31 and Line32, the signal output from the upper signal port on the left side of the lamp driving and sealing unit 1 of the second row light bar 13 is transmitted to the lower signal port on the left side of the lamp driving and sealing unit 1 of the third row light bar 13 through the signal Line31, the signal output from the lower signal port on the left side of the lamp driving and sealing unit 1 of the second row light bar 13 is transmitted to the upper signal port on the left side of the lamp driving and sealing unit 1 of the third row light bar 13 through the signal Line32, after the lamp driving and sealing unit 1 of the third row light bar 13 detects that the upper and lower signal ports on the left side have corresponding input signals, the upper signal port on the left side is used as the signal input port In1, the lower signal port on the left side is used as the signal input port In2, and the upper signal port on the right side is used as the signal output port, the lower signal port on the right serves as signal output ports Out2, … …, and so on, and the input signal can be transmitted to each row of light bars 13 in the M rows of light bars 13 connected in series. The two signal ports on the left side of the 1-N lamp driving and sealing unit 130 of the first row of lamp strips 13 are used as signal input ports In1 and In2, the two signal ports on the right side are automatically used as signal output ports Out1 and Out2, the two signal ports on the right side of the 1-N lamp driving and sealing unit 130 of the second row of lamp strips 13 are used as signal input ports In2 and In1, the two signal ports on the left side are automatically used as signal output ports Out2 and Out1, the two signal ports on the left side of the 1-N lamp driving and sealing unit 130 of the third row of lamp strips 13 are used as signal input ports In1 and In2, the two signal ports on the right side are automatically used as signal output ports Out1 and Out2, and so on. Obviously, In this example, the input/output properties of the two sets of Signal ports of each lamp driving sealing unit 130 and the corresponding signals are related to the Signal source direction, when a Signal is input from the left side of the lamp driving sealing unit 130, the Signal port on the left side of the lamp driving sealing unit 130 is the Signal input port In, the Signal port on the right side is the Signal output port Out, and the Signal of the upper Signal port of the left and right Signal ports corresponds to the Signal1 provided by the driving port, and the Signal of the lower Signal port corresponds to the Signal2 provided by the driving port, whereas when a Signal is input from the right side of the lamp driving sealing unit 130, the Signal port on the right side of the lamp driving sealing unit 130 is the Signal input port In, the Signal port on the left side is the Signal output port Out, and the Signal of the upper Signal port of the left and right Signal ports corresponds to the Signal2 provided by the driving port, the Signal of the lower Signal port corresponds to the Signal1 provided by the driving port, i.e. the signals define up-down switching.

As an example, referring to fig. 7, a driving port of the controller 23 provides k input signals signal 1-signal lk, k is greater than or equal to 3, the driving port is connected to M rows of light bars 13 connected in series, each row of light bars 13 in the M rows of light bars 13 has N light driving sealing units 130, M is not less than 2, N is not less than 2, M may be equal to N or not equal to N, k signal ports capable of adaptive input/output are respectively disposed on the left and right sides of each light driving sealing unit 130, k is greater than or equal to 3, and the k signal ports on each side are arranged in sequence from top to bottom, and are respectively numbered as 1, 2, …. The left end of each row of light bars 13 is a head part, the right end of each row of light bars 13 is a tail part, the head parts of the light bars 13 are located on the same side, the tail parts of the light bars 13 are located on the other side, the N light driving and sealing units 130 in each row of light bars 13 are numbered from left to right according to the sequence of 1, 2, 3, … and N, and the N light driving and sealing units 130 in each row of light bars 13 are sequentially connected in series. The driving port of the controller 23 is connected to the 1 st to k th signal ports on the left side of the 1 st lamp driving and sealing unit 130 in the first row of lamp strips 13 through signal lines Line11 to Line1k, the 1 st to N lamp driving and sealing units 130 in the first row of lamp strips 13 are sequentially connected in series from left to right, the 1 st to k th signal ports on the right side of the previous-stage lamp driving and sealing unit 130 in the first row of lamp strips 13 are connected to the 1 st to k th signal ports on the left side of the next-stage lamp driving and sealing unit 130 in a one-to-one correspondence manner, the i th signal port on the right side of the N lamp driving and sealing unit 130 in the first row of lamp strips 13 is connected to the k-i +1 th signal port on the right side of the N lamp driving and sealing unit 130 in the second row of lamp strips 13 through a signal Line2i, and i is not less than 1 and not more than k, so as to realize tail connection. The N-1 lamp driving and sealing units 130 of the second row of lamp strips 13 are sequentially connected in series from right to left, the 1 st-k signal ports on the left side of the previous-stage lamp driving and sealing unit 130 in the second row of lamp strips 13 are correspondingly connected with the 1 st-k signal ports on the right side of the next-stage lamp driving and sealing unit 130 one by one, the i-th signal port on the left side of the 1 lamp driving and sealing unit 130 of the second row of lamp strips 13 is connected with the k-i + 1-th signal port on the left side of the 1 lamp driving and sealing unit 130 of the third row of lamp strips 13 through a signal Line3i, so as to realize the first connection of the second row of lamp strips 13 and the third row of lamp strips 13, the 1-N lamp driving and sealing units 130 in the third row of lamp strips 13 are sequentially connected in series from left to right, and the 1-k signal ports on the right side of the previous-stage lamp driving and sealing unit 130 in the third row of lamp strips 13 are correspondingly connected with the 1-k signal ports on the left, … …, and so on, completing the series connection of the M rows of light bars. The signal lines Line 11-Line 1k of the first lamp driving combination and encapsulation unit 130 for connecting the driving port and the first row of light bars 13 form a signal Line group Line1, the signal lines Line 21-Line 2k for connecting the tail of the first row of light bars 13 and the tail of the second row of light bars 13 form a signal Line group Line2, the signal lines Line 31-Line 3k for connecting the head of the second row of light bars 13 and the head of the third row of light bars 13 form a signal Line group Line3, the signal lines Line 41-Line 4k for connecting the tail of the third row of light bars 13 and the tail of the fourth row of light bars 13 form a signal Line group 4, and the like, the signal lines eM Line 1-Line M K for connecting the head of the M-1 row of light bars 13 form a signal Line.

In this example, when the driving port of the controller 23 sends a set of input signals signal 1-signal lk to the signal1 lamp driving and sealing unit 130 of the first row of light bars 13, the signal1 lamp driving and sealing unit 130 of the first row of light bars 13 detects that k signal ports on the left side of the first row of light bars have input signals, and accordingly the signal1 to k signal ports on the left side of the first row of light bars are correspondingly defined as signal input ports In 1-Ink, the signal1 to k signal ports on the right side of the first row of light bars are automatically defined as signal output ports Out 1-Outk, and the signal1 lamp driving and sealing unit 130 of the first row of light bars 13 further outputs corresponding signals to the signal2 lamp driving and sealing unit 130 through the signal1 to k signal ports on the right side; the No. 2 lamp driving and sealing unit 130 of the first row of lamp strips 13 detects that the No. 1 to K signal ports on the left side of the first row of lamp strips have corresponding input signals, so that the No. 1 to K signal ports on the left side of the first row of lamp strips are respectively used as signal input ports In1 to Ink, and the No. 1 to K signal ports on the right side of the first row of lamp strips are automatically used as signal output ports Out1 to Outk; and so on. Since the tails of the first row of light bars 13 and the tails of the second row of light bars 13 are connected to each other through the signal lines Line 21-Line 2k, and the signal lines Line 21-Line 2k are not crossed, a signal output from the i-th signal port on the right side of the N-number lamp driving and sealing unit 130 of the first row of light bars 13 is transmitted to the k-i + 1-th signal port on the right side of the N-number lamp driving and sealing unit 130 of the second row of light bars 13 through the signal Line2i, after the N-number lamp driving and sealing unit 130 of the second row of light bars 13 detects that the 1-k-th signal ports on the right side have corresponding input signals, the 1-k-th signal ports on the right side are respectively defined as signal input ports Ink-In 1, the 1-k-th signal ports on the left side are signal output ports Outk-Out 1, each lamp driving and sealing unit 130 of the second row of light bars 13 determines the input and output properties of the two signal ports on the left and right sides after detecting that the 1-k-number signal ports on the right side have signal, by analogy, the input signal is sequentially transmitted from right to left to the lamp driving and sealing unit 130 of the second row of lamp strips 13. Since the head of the second row of light bars 13 and the head of the third row of light bars 13 are connected to each other through the signal lines Line 31-Line 3k, signals output from the signal ports 1 to k on the left side of the signal port 1 of the signal driver sealing unit 130 of the second row of light bars 13 are transmitted to the signal ports k to 1 on the left side of the signal port 1 of the signal driver sealing unit 130 of the third row of light bars 13, after the signal port 1 of the third row of light bars 13 detects that the signal ports 1 to k on the left side have corresponding input signals, the signal ports 1 to k on the left side are used as signal input ports In1 to Ink, the signal ports 1 to k on the right side are used as signal output ports Out1 to Out, … …, and so on, the input signals can be transmitted to each row of light bars 13 In the M rows of light bars 13 connected In series. The signal ports 1 to k on the left side of the lamp driving and sealing units 1 to N of the first row of lamp strips 13 are used as signal input ports In1 to Ink, the signal ports 1 to k on the right side are automatically used as signal output ports Out1 to Out k, the signal ports 1 to k on the right side of the lamp driving and sealing units 1 to N of the second row of lamp strips 13 are used as signal input ports Ink to In1, the signal ports 1 to k on the left side are automatically used as signal output ports Out k to Out1, the signal ports 1 to k on the left side of the lamp driving and sealing units 1 to N of the third row of lamp strips 13 are used as signal input ports In1 to Ink, the two signal ports on the right side are automatically used as signal output ports Out1 to Out k, and so on. Obviously, In this example, the input/output properties of the two sets of Signal ports of each lamp driving sealing unit 130 and the corresponding signals are related to the Signal source direction, when a Signal is input from the left side of the lamp driving sealing unit 130, the Signal port on the left side of the lamp driving sealing unit 130 is the Signal input port In, the Signal port on the right side is the Signal output port Out, and the Signal of the 1 st Signal port In the left and right Signal ports corresponds to the Signal1 provided by the driving port, and the Signal of the k Signal port corresponds to the Signal provided by the driving port, whereas when a Signal is input from the right side of the lamp driving sealing unit 130, the Signal port on the right side of the lamp driving sealing unit 130 is the Signal input port In, the Signal port on the left side is the Signal output port Out, and the Signal of the 1 st Signal port In the left and right Signal port corresponds to the Signal provided by the driving port, the Signal of the k-th Signal port corresponds to Signal1 provided by the drive port, i.e. the Signal defines up-down switching.

In the technical scheme of this embodiment, two adjacent rows of light bars connected in series with the same driving port of the controller, each group of signal ports of each light driving and sealing unit has k signal ports, k is greater than or equal to 2, when the head is connected with the head, 1 to k signal ports in a group of signal ports of the 1 st light driving and sealing unit (i.e., the 1 st light driving and sealing unit of the row of light bars) in the previous row of light bars are respectively connected with k to 1 signal ports in a group of signal ports of the 1 st light driving and sealing unit (i.e., the 1 st light driving and sealing unit of the row of light bars) in the next row of light bars in a one-to-one correspondence manner, and when the tail is connected with the tail, 1 to k signal ports in a group of signal ports of the last light driving and sealing unit (i.e., the N number of the row of light bars) in the previous row of light bars are respectively connected with the first k signal ports of the last light driving and sealing unit (i.e., the N number of the light driving and sealing units) in the next row of light bars The 1 signal ports are connected in a one-to-one correspondence mode to avoid the phenomenon of signal line crossing during wiring, therefore, when multiple input signals need to be transmitted, each stage of lamp driving and sealing unit can determine the upper and lower positions of signal input/output ports of the multiple input signals according to the detection result of the signal source direction, and the crossing between different signal lines for transmitting the multiple input signals between different rows of lamp strips is avoided, so that the signal lines between M rows of lamp strips in the figures 6 and 7 can be wired on the same layer of the PCB, and the difficulty and the manufacturing cost of PCB layout wiring of the LED lamp strip screen display system are reduced.

Example four

Referring to fig. 8, the present embodiment provides an LED light bar screen display system, which mainly includes a controller 24 and a plurality of rows of light bars 14a, 14b, and 14c connected to the controller 24, where each row of light bars 14a includes a plurality of light driving and sealing units 140a sequentially connected in series, each row of light bars 14b includes a plurality of light driving and sealing units 140b sequentially connected in series, and each row of light bars 14c includes a plurality of light driving and sealing units 140c sequentially connected in series. The number of rows of the light bars 14b and 14c is not less than 2, and the number of the light driving and sealing units in each row of the light bars 14a, 14b and 14c is not less than 2. One end of each row of the light bars 14a, 14b, 14c is a head portion of the light bar, the other end is a tail portion of the light bar, the head portions of the light bars 14a, 14b, 14c in each row are located on the same side, and the tail portions are located on the other side. The controller 24 has at least one driving port IO _1 connected in series with at least two rows of light bars 14b in sequence, the controller 25 has at least one driving port IO _2 connected in series with at least two rows of light bars 14c in sequence, and the two adjacent rows of light bars 14b and 14c connected in series with the same driving port of the controller 20 are connected through corresponding signal lines, namely, the tail part and the tail part, or the head part and the head part.

The present embodiment is different from the above embodiments in that the controller has more than one driving port, and the loading capacity of each driving port is not completely the same, that is, at least one driving port is connected with a different light bar from other driving ports, and the difference includes at least one of the number of rows of the connected light bars, the number of light driving sealing units in the light bars, and the number of signal ports of the light driving sealing units.

As an example, referring to FIG. 8, the controller 24 has three drive ports IO _0 to IO _ 2. The driving port IO _0 outputs an input signal, which is connected to a row of light bars 14a only through a signal Line group Line0 (which has only one signal Line), the light bars 14a have L light driving and sealing units 140a, L is greater than or equal to 2, and only one signal port is disposed on the left side and the right side of each light driving and sealing unit 140 a. The driving port IO _1 outputs an input signal, and is connected to the light bars 14b connected in series in Q rows through a signal Line group Line1 (which has only one signal Line), each row of light bars 14b has N lamp driving and sealing units 140b, the left side and the right side of each lamp driving and sealing unit 140b are only provided with one signal port, and the signal Line groups Line2 to Line Q have one signal Line respectively, and sequentially connect the head portions and the head portions or the tail portions of two adjacent rows of light bars 14 b. The driving port IO _2 outputs k input signals, and is connected to M rows of light bars 14c connected in series through a signal line group LineQ +1, each row of light bars 14c has P lamp driving and sealing units 140c, and the left side and the right side of each lamp driving and sealing unit 140c are respectively provided with k signal ports. When k is 2, the two adjacent rows of light bars 14c are connected with the head or the tail by the method shown in fig. 6; when k is greater than or equal to 3, the head of the light bar 14c is connected with the head of the light bar, or the tail of the light bar is connected with the tail of the light bar by the method shown in fig. 7, and specific connections can be referred to above, and are not described herein again. And the signal line groups LineQ + 2-LineQ + P for realizing the connection of the head parts or the tail parts of the two adjacent lines of light bars 14c are not crossed. Each of the signal line groups LineQ +1 to LineQ + P includes k signal lines without crossing, and each of the lamp driving and sealing units 140c in the two adjacent rows of lamp strips 14c determines the input and output properties of each signal port and the corresponding signal according to the signal source direction.

The LED lamp strip screen display system of this embodiment can widen application scope.

The above description is only for the description of the preferred embodiments of the present invention, and not for any limitation of the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure all belong to the scope of the technical solution of the present invention.

Claims (15)

1. The utility model provides a LED lamp strip screen display system, includes controller and two line at least lamp strips, every line the lamp strip is driven to close the unit including two at least lamps of series connection in proper order, and every line the one end of lamp strip does the prelude of lamp strip, the other end does the afterbody of lamp strip, the prelude of two line at least lamp strips is located same one side, its characterized in that, the controller has at least one drive port and two line at least the lamp strip is series connection in proper order, and with same two adjacent lines of drive port series connection the afterbody and the afterbody or the prelude of lamp strip link to each other through corresponding signal line.

2. The LED light bar screen display system of claim 1, wherein each of the light driver enclosure units communicates bi-directionally.

3. The LED light bar screen display system of claim 2, wherein each of the light driver enclosure units comprises two sets of signal ports for enabling bi-directional communication, each set of signal ports having at least one signal port.

4. The LED light bar screen display system of claim 3, wherein the two sets of signal ports of each of the lamp driver enclosure units are disposed on opposite sides of the lamp driver enclosure unit, and wherein each of the two sets of signal ports are disposed in a one-to-one correspondence; when the signal port on one side of the two opposite sides of each lamp driving and sealing unit receives a signal before the signal port on the other side, the signal port on one side is automatically used as the signal input port of the lamp driving and sealing unit, and the signal port on the other side is automatically used as the signal output port of the lamp driving and sealing unit.

5. The LED light bar screen display system of claim 3, wherein each set of signal ports of each light driving and sealing unit in two adjacent rows of light bars connected in series with the same driving port has k signal ports, k is greater than or equal to 2, and when the tail and the tail or the head and the head of the two adjacent rows of light bars are connected through corresponding signal lines, the 1 st to k signal ports in one set of signal ports of the corresponding light driving and sealing unit in one row of light bars are respectively connected with the 1 st to k signal ports in one set of signal ports of the corresponding light driving and sealing unit in the other row of light bars in a one-to-one correspondence manner.

6. The LED light bar screen display system of claim 3, wherein when each set of signal ports of each of the light driving and sealing units in two adjacent rows of light bars connected in series with the same driving port has at least two signal ports, signal lines for connecting the head and the head or the tail and the tail of the two adjacent rows of light bars do not intersect, and each light driving and sealing unit in the two adjacent rows of light bars determines the input and output properties of each signal port and the corresponding signal according to the signal source direction.

7. The LED light bar screen display system of claim 6, wherein two adjacent rows of light bars connected with the head part and the head part are arranged from top to bottom, and in the two adjacent rows of light bars, each group of signal ports of each lamp driving and sealing unit has k signal ports, k is greater than or equal to 2, and the 1 st to k signal ports in one group of signal ports of the first lamp driving and sealing unit in the previous row of light bars are respectively connected with the k to 1 st signal ports in one group of signal ports of the first lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner.

8. The LED light bar screen display system of claim 6, wherein two adjacent rows of light bars connected with the tail portion are arranged from top to bottom, and in the two adjacent rows of light bars, each group of signal ports of each lamp driving and sealing unit has k signal ports, k is greater than or equal to 2, and the 1 st to k signal ports in one group of signal ports of the last lamp driving and sealing unit in the last row of light bars are respectively connected with the k to 1 st signal ports in one group of signal ports of the last lamp driving and sealing unit in the next row of light bars in a one-to-one correspondence manner.

9. The LED light bar screen display system of claim 3, wherein each light driver sealing unit comprises a driver module and at least one LED light bead, each LED light bead is connected with the driver module, and each signal port is disposed on the driver module.

10. The LED light bar screen display system of any one of claims 1-9, wherein each of the drive ports provides at least one input signal.

11. The LED light bar screen display system of any one of claims 1-9, wherein the controller has a plurality of driving ports, and the light bars connected to all of the driving ports are the same, or at least one of the driving ports has a different light bar from the other driving ports, wherein the difference comprises at least one of the number of rows of connected light bars, the number of light driver sealing units in the light bars, and the number of signal ports per group of light driver sealing units.

12. The LED light bar screen display system of any one of claims 1-9, wherein the controller and the light bars are distributed on different PCB boards, and the controller and the light bars are connected by a flat cable; or the controller and the light bars are distributed on the same PCB, and the controller is connected with the light bars through wiring on the PCB.

13. The LED light bar screen display system of claim 12, wherein at least all light bars connected in series with the same driving port are distributed on the same PCB board, and the signal lines between two adjacent rows of the light bars connected in series with the same driving port are wiring printed on the PCB board.

14. The LED light bar screen display system of claim 13, wherein the signal lines between the light bars connected in series with the same drive port are located on the same layer of the PCB board.

15. The LED light bar screen display system of claim 12, wherein the PCB board is a rigid board or a flexible board.

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