CN100580746C

CN100580746C - LED digital display screen

Info

Publication number: CN100580746C
Application number: CN200810062180A
Authority: CN
Inventors: 陈浩群
Original assignee: NINGBO YONGWANG ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: NINGBO YONGWANG ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2008-06-04
Filing date: 2008-06-04
Publication date: 2010-01-13
Anticipated expiration: 2028-06-04
Also published as: CN101290732A

Abstract

The invention discloses an LED digital display screen, comprising a decimal point character block (2) and N 8-shaped character blocks (4), wherein the decimal point character block (2) can be detachably connected in series; the decimal point character block (2) comprises a PCB circuit board I (6) and an LED light I (1), wherein the PCB circuit board I (6) is connected to a character block outer frame I, and the LED light I (1) is inserted on the PCB circuit board I (6) and is connected with an LED light control circuit I which is arranged on the PCB circuit board I (6); each 8-shaped character block (4) comprises a PCB circuit board II (11) and an LED light II (3), wherein the PCB circuit board II (11) is connected to a character block outer frame II (10) and the LED light II (3) is divided into twenty-five LED field groups and is connected with an LED light control circuit II arranged on the PCB circuit board II (11); the character block outer frame I and the character block outer frame II (10) are detachably connected into a whole through a fixing strip (31). Each displayed number is an independent character block part, the character block parts can be freely combined to display number information, thereby being full of individualization for displayed number fonts.

Description

The LED digital display screen

Technical field:

The present invention relates to a kind of display screen that is used to show various numerical informations, specifically is a kind of LED digital display screen.

Background technology:

At present, the LED digital display screen just with its brightness height, operating voltage is low, power consumption is little and characteristics such as long service life and being widely used in all trades and professions, but, still there is following defective in actual applications in prior art LED digital display screen: 1, the several numerals on the digital display screen all are that to be presented at all be to be connected on the same wiring board in other words, the numeral that increase to show when needs or when reducing show digital is just had to redesign the circuit structure on the wiring board or is bought the digital display screen of another kind of style again; 2, the general 7 segmentations control display packing that adopts of each numeral on the digital display screen, in other words, each numeral is made up of three horizontal fields and four perpendicular fields, when the wherein several fields in these 7 fields are shinny at one time, will demonstrate corresponding digital, though and 7 segmentations control display packing makes the circuit structure of digital display screen fairly simple, the digital font that it shows is more popular, inflexible.

Summary of the invention:

The technical problem to be solved in the present invention is, the numeral that a kind of each demonstration is provided is independently block parts, can free assembly between the block parts organize and show different numerical information, and can make the relatively richer personalized LED digital display screen of digital font of demonstration.

Technical solution of the present invention is that a kind of LED digital display screen with following structure is provided: it comprises the radix point block and N 8 blocks that are provided with some LED lamp II that are provided with some LED lamp I; Detachably be connected in series between described N 8 blocks and the radix point block; Described radix point block comprises block housing I and the PCB wiring board I that is connected on the block housing I; Described LED lamp I interts on PCB wiring board I, and is connected with LED lamp control circuit I on being arranged in PCB wiring board I; Described each 8 block include block housing II and the PCB wiring board II that is connected on the block housing II; Described some LED lamp II are divided into 25 LED field groups; Described 25 LED field groups are distributed on the PCB wiring board II, and are connected with LED lamp control circuit II on being arranged in PCB wiring board II; Described block housing I and block housing II removably connect into an integral body by fixed strip.

After adopting above structure, compared with prior art, the present invention has the following advantages:

1, the numeral of each demonstration is that radix point block and each 8 block all are independently block parts among the present invention, be equipped with separately PCB wiring board and corresponding LED lamp control circuit on these block parts, and between N 8 blocks and the radix point block is detachable the serial connection, therefore, when the present invention increases the numeral that shows or reduces show digital at needs, just do not need to redesign the circuit structure on the wiring board or buy the digital display screen of another kind of style again, the user can organize by the free assembly between the block parts and show different numerical information.

2, different with the general 7 segmentations control display packing that adopts of each numeral on the prior art LED digital display screen, LED lamp II among the present invention on each 8 block is divided into 25 and is distributed in that PCB wiring board II goes up and by the LED field groups of LED lamp control circuit II control, under the control of LED lamp control circuit II, 25 field groups not only can be combined into 0～90 numeral, and since digital display field of the present invention than prior art get more much more careful, therefore, the shown all relatively richer personalization of digital font of the present invention.

Above-mentioned N 8 blocks can adopt following concrete structure with the detachable serial connection of radix point block: described block housing I is provided with power input interface I, power output interface I, data-signal output interface I and the data-signal receiving interface that is connected with LED lamp control circuit I; Be located at power input interface II, the power output interface II, data-signal input interface II and the data-signal output interface II that are connected with LED lamp control circuit II on the described block housing II; Described power output interface I is connected with the power input interface II of first 8 block; Described data-signal output interface I is connected with the data-signal input interface II of first 8 block; The power output interface II of described first 8 block is connected with the power input interface II of second 8 block; The data-signal output interface II of described first 8 block is connected with the data-signal input interface II of second 8 block; The power output interface II of described N-1 8 blocks is connected with the power input interface II of N 8 blocks; The data-signal output interface II of described N-1 8 blocks is connected with N 8 block data-signal input interface II.

Above-mentioned LED lamp control circuit I can comprise that Data Receiving processing module and the data memory module that is connected with the Data Receiving processing module, power transfer module I, boost module, reseting module, crystal oscillator module and radix point brightness strengthen control module; Described power input interface I, power output interface I, data memory module, boost module, reseting module and radix point brightness strengthen control module and all are connected with power transfer module I; Described data-signal output interface I is connected with the Data Receiving processing module with the data-signal receiving interface; Described LED lamp I strengthens control module with described radix point brightness and is connected.

Above-mentioned LED lamp control circuit II can comprise that power transfer module II, LED field groups data-signal processing module, LED field groups work allocation module and the brightness of LED field groups strengthen control module; Described LED field groups data-signal processing module, LED field groups work allocation module, power input interface II and power output interface II are connected with power transfer module II; Described LED field groups work allocation module, data-signal input interface II and data-signal output interface II are connected with LED field groups data-signal processing module; Described 25 LED field groups strengthen control module with the brightness of LED field groups and are connected.

As a kind of improvement of the present invention, described N 8 blocks removably are connected with one 9/10 block; Described 9/10 block comprises block housing III, be connected PCB wiring board III on the block housing III, be arranged on some LED lamp III and LED lamp control circuit III on the PCB wiring board III; The described block housing III back side is provided with power input interface III and the data-signal input interface III that is connected with LED lamp control circuit III; Described power input interface III is connected with the power output interface II of N 8 blocks; Described data-signal input interface III is connected with the data-signal output interface II of N 8 blocks; Described block housing III removably connects into an integral body by fixed strip and block housing I and block housing II.9/10 block that the digital degree of accuracy that the present invention is shown is set is higher.

Above-mentioned N can be 3.

As another kind of improvement the of the present invention, can connect one on the described Data Receiving processing module can be according to the strong and weak illuminant module of adjusting the brightness of LED lamp automatically of extraneous light.The effect of illuminant module is to adjust the brightness of display digit of the present invention according to the power of extraneous light automatically, thereby makes the present invention be applicable to different environment.

As another improvement of the present invention, described data-signal receiving interface can connect a wireless signal receiver.Being provided with of wireless signal receiver can make the present invention need not to carry out loaded down with trivial details wired connection setting just can receive the data that send over from external control, thereby makes things convenient for the present invention in different place uses.

Also have a kind of improvement as of the present invention, described PCB wiring board I go up and PCB wiring board I and LED lamp I between can be coated with moistureproof glue; Described PCB wiring board II upward and between PCB wiring board II and the LED lamp II can be coated with moistureproof glue; Described PCB wiring board III upward and between PCB wiring board III and the LED lamp III can be coated with moistureproof glue; Can establish on described PCB wiring board I, PCB wiring board II and the PCB wiring board III be arranged in parallel and with PCB wiring board I, PCB wiring board II and the vertical baffle plate of PCB wiring board III.Moistureproof being provided with of glue can be played waterproof and dampproof effect to the present invention, thereby guarantees serviceable life of the present invention; Being provided with of baffle plate can prevent that the present invention from occurring LED in use and scurrying optical phenomenon, thereby guarantees that the numeral that the present invention is shown is more clear.

Description of drawings:

Fig. 1 is the main TV structure synoptic diagram of LED digital display screen of the present invention.

Fig. 2 is the backsight structural representation of LED digital display screen of the present invention.

Fig. 3 is the work system block scheme of LED digital display screen of the present invention.

Fig. 4 is the principle of work block scheme of decimal braille piece among the present invention.

Fig. 5 is the operating circuit catenation principle figure of decimal braille piece among the present invention.

Fig. 6 is the principle of work block scheme of 8 blocks among the present invention.

Fig. 7 is the operating circuit catenation principle figure of 8 blocks among the present invention.

Fig. 8 is the circuit catenation principle figure of LED lamp I in the radix point block block.

Fig. 9 is the circuit catenation principle figure of LED lamp II in 8 blocks.

Figure 10 is the circuit catenation principle figure of LED lamp III in 9/10 block.

Figure 11 is the distribution situation synoptic diagram of 25 LED field groups in 8 blocks.

Figure 12 is the synoptic diagram of 8 blocks when being shown as numeral " 1 ".

Figure 13 is the synoptic diagram of 8 blocks when being shown as numeral " 2 ".

Shown in the figure: 1, LED lamp I, 2, the radix point block, 3, LED lamp II, 4,8 blocks, 5, block housing I, 6, PCB wiring board I, 7, the Data Receiving processing module, 8, data memory module, 9, power transfer module I, 10, block housing II, 11, PCB wiring board II, 12, boost module, 13, reseting module, 14, the crystal oscillator module, 15, radix point brightness strengthens control module, 16, illuminant module, 17, wireless signal receiver, 18, baffle plate, 19,9/10 block, 20, power transfer module II, 21, LED field groups data-signal processing module, 22, LED field groups work allocation module, 23, the brightness of LED field groups strengthens control module, 24, data-signal input interface III, 25, block housing III, 26, PCB wiring board III, 27, LED lamp III, 28, power input interface III, 29, power lead, 30, data line, 31, fixed strip;

A, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, LED field groups; R, photoresistance

JP1, power input interface I, JP2, power output interface I, JP3, data-signal output interface I, JP4, power input interface II, JP5, power output interface II, JP6, data-signal input interface II, JP7, data-signal output interface II, JP8, data-signal receiving interface.

Specific embodiment:

The invention will be further described below in conjunction with the drawings and specific embodiments:

As Fig. 1, Fig. 2 and shown in Figure 3, in this specific embodiment, LED digital display screen of the present invention comprises a radix point block that is provided with some LED lamp I1 2, three 8 blocks 4 and 9/10 blocks 19 that are provided with some LED lamp III27 that are provided with some LED lamp II3; Described radix point block 2 comprises block housing I5 and the PCB wiring board I6 that is connected on the block housing I5; When described LED lamp I1 interts on PCB wiring board I6 be arranged in PCB wiring board I6 on LED lamp control circuit I be connected; Described each 8 block 4 include block housing II10 and the PCB wiring board II11 that is connected on the block housing II10; Described some LED lamp II 3 are divided into 25 LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y; When described 25 LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y are distributed on the PCB wiring board II11 be arranged in PCB wiring board II11 on LED lamp control circuit II be connected; Described 9/10 block 19 comprises block housing III25, be connected PCB wiring board III26 on the block housing III25, be arranged on some LED lamp III27 and LED lamp control circuit III on the PCB wiring board III26.: described PCB wiring board I6 upward and between PCB wiring board I6 and the LED lamp I1 scribbles moistureproof glue; Described PCB wiring board II11 upward and between PCB wiring board II11 and the LED lamp II3 scribbles moistureproof glue; Described PCB wiring board III26 upward and between PCB wiring board III26 and the LED lamp III27 scribbles moistureproof glue; Described PCB wiring board I6, PCB wiring board II11 and PCB wiring board III26 are provided with and are arranged in parallel and the baffle plate 18 vertical with the PCB wiring board; Described block housing I5, three block housing II10 and a block housing III25 removably connect into an integral body by fixed strip 31.

In this specific embodiment, described radix point block 2, three 8 blocks 4 and 9/10 block 19 are dismountable successively being serially connected, and the concrete structure of this detachable serial connection successively is as follows: described block housing I5 is provided with power input interface I JP1, power output interface I JP2, data-signal output interface I JP3 and the data-signal receiving interface JP8 that is connected with LED lamp control circuit I; Be located at power input interface II JP4, the power output interface II JP5, data-signal input interface II JP6 and the data-signal output interface II JP7 that are connected with LED lamp control circuit II on the described block housing II10; The described block housing III25 back side is provided with power input interface III28 and the data-signal input interface III24 that is connected with LED lamp control circuit III; Described power output interface I JP2 is provided with joint by two ends power lead 29 is connected with the power input interface IIJP4 of first 8 block 4; Described data-signal output interface I JP3 is provided with joint by two ends data line 30 is connected with the data-signal input interface II JP6 of first 8 block 4; The power output interface II JP5 of described first 8 block 4 is provided with joint by two ends power lead 29 is connected with the power input interface II JP4 of second 8 block 4; The data-signal output interface II JP7 of described first 8 block 4 is provided with joint by two ends data line 30 is connected with the data-signal input interface II JP6 of second 8 block 4; The power output interface II JP5 of described second 8 block 4 is provided with joint by two ends power lead 29 is connected with the power input interface II JP4 of the 3rd 8 block 4; The data-signal output interface II JP7 of described second 8 block 4 is provided with joint by two ends data line 30 is connected with the data-signal input interface II JP6 of the 3rd 8 block 4; Described power input interface III28 is connected with the power output interface II JP5 of the 3rd 8 block 4; Described data-signal input interface III24 is connected with the data-signal output interface II JP7 of the 3rd 8 block 4.

As shown in Figure 4 and Figure 5, in this specific embodiment, described LED lamp control circuit I comprises Data Receiving processing module 7 and the data memory module 8 that is connected with Data Receiving processing module 7, power transfer module I9, boost module 12, reseting module 13, crystal oscillator module 14, radix point brightness enhancing control module 15 and the illuminant module 16 that can adjust the brightness of LED lamp according to extraneous light power automatically; Described power input interface I JP1, power output interface I JP2, data memory module 8, boost module 12, reseting module 13 and radix point brightness strengthen control module 15 and all are connected with power transfer module I9; Described data-signal output interface I JP3 is connected with Data Receiving processing module 7 with data-signal receiving interface JP8; Described LED lamp I1 strengthens control module 15 with described radix point brightness and is connected; Described illuminant module 16 comprises resistance R 33, photoresistance R and capacitor C 12; One end of described resistance R 33 is connected with power transfer module I9, and its other end is connected with the end of Data Receiving processing module 7 and photoresistance R simultaneously; The other end ground connection of described photoresistance R; Described capacitor C 12 is connected the two ends of photoresistance R; Described photoresistance R is positioned at PCB wiring board I6; Described data-signal receiving interface JP8 is connected with a wireless signal receiver 17.

As Fig. 6, Fig. 7, Fig. 8, Fig. 9 and shown in Figure 10, in this specific embodiment, described LED lamp control circuit II comprises that power transfer module II20, LED field groups data-signal processing module 21, LED field groups work allocation module 22 and the brightness of LED field groups strengthen control module 23; Described LED field groups data-signal processing module 21, LED field groups work allocation module 22, power input interface II JP4 and power output interface II JP5 are connected with power transfer module II20; Described LED field groups work allocation module 22, data-signal input interface II JP6 and data-signal output interface II JP7 are connected with LED field groups data-signal processing module 21; Described LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y strengthen control module 23 with the brightness of LED field groups and are connected; Described LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y are formed by connecting by some LED light emitting diodes and resistance respectively.

As shown in figure 11, in specific embodiment, described LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y press clockwise series arrangement successively on 8 blocks 4; LED lamp II3 distribution triangular in shape among described LED field groups a, f, o, q, s, t, the u; The rectangular distribution of LED lamp II3 among described LED field groups c, d, g, r, w, the y; LED lamp II3 among described LED field groups h, the p is irregular heptagon; LED lamp II3 among described LED field groups m, the x is irregular hexagon; LED lamp II3 among described LED field groups i, the k is at right angles trapezoidal; Described LED field groups b, e, j, l, n, v are pentagon.

Principle of work of the present invention is, when the Data Receiving processing module 7 on the radix point block 2 receives the digital display message of external control system, make LED lamp I Chang Liang all on the radix point block 2 after the processing through Data Receiving processing module 7, make all LED lamp III27 Chang Liang on 9/10 block 19; And the LED lamp II on 8 blocks 4 is through the processing of LED field groups data-signal processing module 21 and the Control Allocation of LED field groups work allocation module 22, make 25 LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, the y matched combined is shinny, thereby demonstrate 0～90 rich personalized numeral, for example, as shown in figure 12, as 25 LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, LED field groups d among the y, e, f, g, h, i, j, k, l, m, n, when o was shinny, 8 fields 4 were shown as numeral " 1 "; As shown in figure 13, LED field groups b in 25 LED field groups a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, c, d, e, g, h, i, j, l, n, o, p, q, r, s, v, when w is shinny, 8 fields 4 are shown as numeral " 2 ".

The present invention is not limited to the structure described in the foregoing description, and it also allows variation, is not limited to three as the quantity of 8 blocks 4 among the present invention, and it also can be two, four or five; Also illuminant module 16 can be do not connected on the described Data Receiving processing module 7, also wireless signal receiver 17 can be do not connected at described data-signal receiving interface JP8; Also have, described PCB wiring board I6 goes up and PCB wiring board I6 goes up with LED lamp I1, described PCB wiring board II11 and PCB wiring board II11 and LED lamp II3 between and all can not be coated with moistureproof glue on the described PCB wiring board III26 and between PCB wiring board III26 and the LED lamp III27, and also can not establish the baffle plate 18 that is arranged in parallel on described PCB wiring board I6, PCB wiring board II11 and the PCB wiring board III26, etc.More than change and all fall into protection scope of the present invention.

Claims

1, a kind of LED digital display screen comprises a radix point block (2) that is provided with some LED lamp I (1) and N 8 blocks (4) that are provided with some LED lamp II (3), it is characterized in that: detachably be connected in series between described N 8 block (4) and the radix point block (2); Described radix point block (2) comprises block housing I (5) and is connected PCB wiring board I (6) on the block housing I (5); Described LED lamp I (1) interts on PCB wiring board I (6), and is connected with LED lamp control circuit I on being arranged in PCB wiring board I (6); Described each 8 block (4) include block housing II (10) and are connected PCB wiring board II (11) on the block housing II (10); Described some LED lamp II (3) are divided into 25 LED field groups (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y); Described 25 LED field groups (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) are distributed on the PCB wiring board II (11), and are connected with LED lamp control circuit II on being arranged in PCB wiring board II (11); Described block housing I (5) and block housing II (10) removably connect into an integral body by fixed strip (31).

2, LED digital display screen according to claim 1, it is characterized in that: described N 8 blocks (4) detachably are connected in series with radix point block (2) and refer to that described block housing I (5) is provided with power input interface I (JP1), power output interface I (JP2), data-signal output interface I (JP3) and the data-signal receiving interface (JP8) that is connected with LED lamp control circuit I; Be located at power input interface II (JP4), the power output interface II (JP5), data-signal input interface II (JP6) and the data-signal output interface II (JP7) that are connected with LED lamp control circuit II on the described block housing II (10); Described power output interface I (JP2) is connected with the power input interface II (JP4) of first 8 block (4); Described data-signal output interface I (JP3) is connected with the data-signal input interface II (JP6) of first 8 block (4); The power output interface II (JP5) of described first 8 block (4) is connected with the power input interface II (JP4) of second 8 block (4); The data-signal output interface II (JP7) of described first 8 block (4) is connected with the data-signal input interface II (JP6) of second 8 block (4); The power output interface II (JP5) of described N-1 8 blocks (4) is connected with the power input interface II (JP4) of N 8 blocks (4); The data-signal output interface II (JP7) of described N-1 8 blocks (4) is connected with N 8 blocks (4) data-signal input interface II (JP6).

3, LED digital display screen according to claim 1 and 2 is characterized in that: described LED lamp control circuit I comprises that Data Receiving processing module (7) and the data memory module (8) that is connected with Data Receiving processing module (7), power transfer module I (9), boost module (12), reseting module (13), crystal oscillator module (14) and radix point brightness strengthen control module (15); Described power input interface I (JP1), power output interface I (JP2), data memory module (8), boost module (12), reseting module (13) and radix point brightness strengthen control module (15) and all are connected with power transfer module I (9); Described data-signal output interface I (JP3) is connected with Data Receiving processing module (7) with data-signal receiving interface (JP8); Described LED lamp I (1) strengthens control module (15) with described radix point brightness and is connected.

4, LED digital display screen according to claim 3 is characterized in that: being connected with one on the described Data Receiving processing module (7) can be according to the strong and weak illuminant module (16) of adjusting the brightness of LED lamp automatically of extraneous light.

5, LED digital display screen according to claim 3 is characterized in that: described data-signal receiving interface (JP8) is connected with a wireless signal receiver (17).

6, LED digital display screen according to claim 1 and 2 is characterized in that: described LED lamp control circuit II comprises that power transfer module II (20), LED field groups data-signal processing module (21), LED field groups work allocation module (22) and the brightness of LED field groups strengthen control module (23); Described LED field groups data-signal processing module (21), LED field groups work allocation module (22), power input interface II (JP4) and power output interface II (JP5) are connected with power transfer module II (20); Described LED field groups work allocation module (22), data-signal input interface II (JP6) and data-signal output interface II (JP7) are connected with LED field groups data-signal processing module (21); Described 25 LED field groups (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) strengthen control module (23) with the brightness of LED field groups and are connected.

7, LED digital display screen according to claim 6 is characterized in that: described 25 LED field groups (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y) are pressed clockwise series arrangement successively at 8 blocks (4); LED lamp II (3) distribution triangular in shape among LED field groups a, f, o, q, s, t, the u; The rectangular distribution of LED lamp II (3) among LED field groups c, d, g, r, w, the y; LED lamp II (3) among LED field groups h, the p is irregular heptagon; LED lamp II (3) among LED field groups m, the x is irregular hexagon; LED lamp II (3) among LED field groups i, the k is at right angles trapezoidal; LED field groups b, e, j, l, n, v are pentagon.

8, LED digital display screen according to claim 2 is characterized in that: described N 8 blocks (4) removably are connected with one 9/10 block (19); Described 9/10 block (19) comprises block housing III (25), be connected PCB wiring board III (26) on the block housing III (25), be arranged on some LED lamp III (27) and LED lamp control circuit III on the PCB wiring board III (26); Described block housing III (25) back side is provided with power input interface III (28) and the data-signal input interface III (24) that is connected with LED lamp control circuit III; Described power input interface III (28) is connected with the power output interface II (JP5) of N 8 blocks (4); Described data-signal input interface III (24) is connected with the data-signal output interface II (JP7) of N 8 blocks (4); Described block housing III (25) removably connects into an integral body by fixed strip (31) with block housing I (5) and block housing II (10).

9, according to claim 1 or 2 or 8 described LED digital display screens, it is characterized in that: described N is 3.

10, according to claim 1 or 8 described LED digital display screens, it is characterized in that: described PCB wiring board I (6) upward and between PCB wiring board I (6) and the LED lamp I (1) scribbles moistureproof glue; Described PCB wiring board II (11) upward and between PCB wiring board II (11) and the LED lamp II (3) scribbles moistureproof glue; Described PCB wiring board III (26) upward and between PCB wiring board III (26) and the LED lamp III (27) scribbles moistureproof glue; Described PCB wiring board I (6), PCB wiring board II (11) and PCB wiring board III (26) are provided with and are arranged in parallel and the baffle plate (18) vertical with PCB wiring board I, PCB wiring board II and PCB wiring board III.