CN203179419U

CN203179419U - LED display unit applied to three-side flip screens

Info

Publication number: CN203179419U
Application number: CN2012206285576U
Authority: CN
Inventors: 方迪勇
Original assignee: CHANGSHA XINYUAN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: CHANGSHA XINYUAN ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2012-11-26
Filing date: 2012-11-26
Publication date: 2013-09-04
Anticipated expiration: 2022-11-26

Abstract

Disclosed is an LED display unit applied to three-side flip screens. Basic pixels are disposed at a front side of a PCB, all the drive circuit components are disposed at a back side of the PCB, and a voltage reduction and constant voltage module is disposed. The basic pixels disposed at the front side of the PCB are constituted of red, green and blue LED luminous single lamps, and are divided into real basic pixels and virtual basic pixels. The back side of the PCB is specially provided with one or more large-scale component area (areas). A relative high direct current that has the voltage of over 5V and is transmitted from an external part is input through an input end of the voltage reduction and constant voltage module, and the voltage reduction and constant voltage module converts the relative high direct current to a direct current having a stable voltage of 5 V and thus supply power for the drive unit at the PCB of the LED display unit. The LED display unit applied to three-side flip screens is advantaged by being good in display effect, strong in stability, high in power supply efficiency, rational in structure and convenient for wire arrangement, and is an LED display unit suitable for the outdoor environment.

Description

Be applicable to the led display unit of three upset screens

Technical field

The utility model relates to the technical field of outdoor billboard.More particularly, relate to that three faces turn over three upset screens of color screen, LED or billboard is turned on the LED two sides.

Background technology

Three faces existing and that once had turn over color screen, three upset screens of LED or LED two sides and turn over billboard, and its advertisement form progressively obtains the approval of industry.But in existing or the said goods of once having, led display unit adopts three-in-one paster lamp pearl at present, and present three-in-one paster lamp pearl is only to satisfy indoor application, although taked various safeguard measures, uses but can't satisfy under the abominable outdoor environment.Electric power-feeding structure in the said goods is to adopt outside 5V power supply, because led display unit is mounted on one of them face of three cornues, the inner space of three cornues is very little, can't in three cornue pipes, ac-dc switching power be installed, therefore, can only adopt the split power supply plan, ac-dc switching power is installed concentratedly at three cornues, supply line is longer at the inside of three cornues cabling; When practical application, the triangle length of tube all more than 7 meters, adds peripheral leads usually, and power supply length is not less than 10 meters; Because the impedance of lead is directly proportional with its length and directly is inversely proportional to line, there is bigger pressure reduction in this electric power system; Be to reduce pressure reduction, method existing or that once had is with 1 times or 2 times of power lead footpath overstriking, even wants overstriking to 3 times; Although adopt the method that adds the thick line footpath can reduce pressure reduction,, module inserts the distance difference of electric wire up and down, still has certain pressure reduction between the module, and this pressure reduction directly influences colourity difference, gray shade scale and the picture quality that the whole screen of LED display shows.

The utility model content

The utility model is at the problem described in the background, and by the video base pixel that the luminous single lamp of red, green, blue LED is formed, satisfies outdoor environment and use, and overcome the described problem and shortage part of background.

Addressing the above problem the technical scheme that adopts is: base pixel is installed in the pcb board front, and all components of drive circuit are installed in the pcb board back side, and a kind of step-down constant voltage module is arranged.The base pixel that is installed in the pcb board front adopts the luminous single lamp of red, green, blue LED to form, and the base pixel of led display unit is divided into the plain base pixel of real image and virtual pixel base pixel; Led display unit is real image when plain, the plain base pixel of real image by 1 red+1 green+the luminous single lamp of 1 blue LED forms; When led display unit is virtual pixel, the virtual pixel base pixel by 2 red+1 green+the luminous single lamp of 1 blue LED forms.The special arrangement in the pcb board back side has one or several high size element areas, and the high size element in the led display unit, connection terminal and step-down constant voltage module all concentrate in the high size element area.The higher dc voltage that the outside is sent here is greater than 5V, and the optimum voltage scope is 12-36V, and is this than High Level DC Voltage, when length is apart from direct current transmission, can reduce line loss and pressure reduction; This higher direct current inserts from the input end of step-down constant voltage module, and step-down constant voltage module converts higher direct current to stable 5V direct current output, gives driver element power supply in the pcb board of led display unit.

The utility model beneficial effect is mainly reflected in: display effect, stability is strong, power supplying efficiency is high, rational in infrastructure, the advantage being convenient to connect up, improve gray shade scale simultaneously, having reduced the whole screen aberration of display screen, is the led display unit that a kind of suitable outdoor environment is used.

Description of drawings

Be described further below in conjunction with accompanying drawing and " being applicable to the led display unit of three upset screens ":

Fig. 1: the utility model led display unit Facad structure 1 synoptic diagram;

Fig. 2: the utility model led display unit Facad structure 2 synoptic diagram;

Fig. 2: the utility model led display unit structure synoptic diagram;

Fig. 4: the utility model led display unit system construction drawing;

In the accompanying drawing:

(1), pcb board; (2) the plain base pixel of real image; (3), virtual pixel base pixel; (4), high size element area; (5), step-down constant voltage module; (6), higher direct current; (7), driver element; (8), step-down constant voltage IC.

Embodiment

Embodiment 1:LED display unit is positive to be implemented, and as Fig. 1,2, in pcb board (1) front, the luminous single lamp of LED is installed; The plain base pixel of real image (2) by 1 red+1 green+the luminous single lamp of 1 blue LED forms; Virtual pixel base pixel (3) by 2 red+1 green+the luminous single lamp of 1 blue LED forms.

Implement at the embodiment 2:LED display unit back side, as Fig. 3, at pcb board (1) back side, the special arrangement has one or several high size element areas (4), and the high size element in the led display unit, connection terminal and step-down constant voltage module (5) all concentrate in the high size element area (4).

Embodiment 3:LED display unit system architecture is implemented, as Fig. 4, the higher direct current (6) that the outside is sent here inserts from the input end of step-down constant voltage module (5), step-down constant voltage module (5) is by step-down constant voltage IC(8) and the peripheral element formation, step-down constant voltage module (5) converts higher direct current (6) to stable 5V DC voltage output, give middle driver element (7) power supply of pcb board (1) of led display unit, described higher direct current (6) voltage is greater than 5V, and the optimum voltage scope is 12-36V.

Claims

1. be applicable to the led display unit of three upset screens, base pixel is installed in pcb board (1) front, components of drive circuit is installed in pcb board (1) back side, it is characterized in that: the base pixel that is installed in pcb board front (1) adopts the luminous single lamp of red, green, blue LED to form, and the base pixel of led display unit is divided into the plain base pixel (2) of real image and virtual pixel base pixel (3); The special arrangement in pcb board (1) back side has one or several high size element areas (4), high size element in the led display unit, connection terminal and step-down constant voltage module (5) all concentrate in the high size element area (4), the direct current that is higher than 5V (6) that the outside is sent here inserts from the input end of step-down constant voltage module (5), step-down constant voltage module (4) converts direct current (6) to stable 5V DC voltage, gives middle driver element (7) power supply of pcb board (1) of led display unit.

2. led display units that are applicable to three upset screens according to claim 1 is characterized in that: the led display unit base pixel is real image when plain, the plain base pixel of real image (2) by 1 red+1 green+the luminous single lamp of 1 blue LED forms.

3. led display units that are applicable to three upset screens according to claim 1 is characterized in that: when the led display unit base pixel is virtual pixel, virtual pixel base pixel (3) by 2 red+1 green+the luminous single lamp of 1 blue LED forms.

4. led display units that are applicable to three upset screens according to claim 1, it is characterized in that: the direct current that the outside is sent here (6) voltage range is 12-36V.