CN111263488A - LED energy-saving circuit - Google Patents

Abstract

The application provides a LED energy-saving circuit, LED energy-saving circuit is applied to in the display device, its characterized in that, LED energy-saving circuit includes: a plurality of LED display module assembly, left switch module, well switch module, right switch module, control module group, power module and wire, wherein, left switch module, well switch module, right switch module include a plurality of control switch respectively, power module is connected to every control switch's collecting electrode, a plurality of LED display module assembly are the array and distribute, every control switch projecting pole passes through the wire and is the LED display module electricity that the array distributes and corresponds the row and connect the back ground connection. The technical scheme provided by the application has the advantages of energy conservation and low cost.

Description

LED energy-saving circuit

Technical Field

The application relates to the field of electronics, in particular to an LED energy-saving circuit.

Background

An LED display (LED display) is a flat panel display, which is composed of small LED module panels, and is used to display various information such as text, images, video, and the like. The LED electronic display screen integrates the microelectronic technology, the computer technology and the information processing, and has the advantages of bright color, wide dynamic range, high brightness, long service life, stable and reliable work and the like. The LED display screen is widely applied to commercial media, cultural performance markets, stadiums, information dissemination, news distribution, security trading and the like, and can meet the requirements of different environments.

The conventional LED circuit cannot be adjusted according to different application programs, so that the power consumption of the LED circuit is high, and the energy consumption and the cost are improved.

Disclosure of Invention

The embodiment of the application discloses an LED energy-saving circuit, which can adjust the LED circuit according to different application programs, reduces the power consumption of the LED circuit, and reduces the energy consumption and the cost.

The first aspect of the embodiment of the present application discloses an LED energy-saving circuit, where the LED energy-saving circuit is applied in a display device, the LED energy-saving circuit includes: the LED display module comprises a plurality of LED display modules, a left switch module, a middle switch module, a right switch module, a control module, a power module and wires, wherein the left switch module, the middle switch module and the right switch module respectively comprise a plurality of control switches, a collector of each control switch is connected with the power module, the plurality of LED display modules are distributed in an array, and an emitter of each control switch is electrically connected with the LED display modules in the corresponding array in the array distribution through the wires and then grounded;

the base electrode of each control switch of the middle switch module is connected with the trigger signal;

each control switch of the left switch module is connected with one end of a switch K1 of the control circuit, the other end of a switch K1 is connected with the trigger signal, and the switch K1 is controlled to be switched on and off by a coil of the first relay;

each control switch of the left switch module is connected with one end of a switch K2 of the control circuit, the other end of a switch K2 is connected with the trigger signal, and the switch K2 is controlled to be switched on and off by a coil of a second relay;

the control circuit further includes: a control switch T1, a control switch T2, and a voltage source; the positive electrode of the voltage source is respectively connected with the collector electrodes of the control switch T1 and the control switch T2, the control switch T1 is connected with one end of a coil of the first relay, the other end of the coil of the first relay is connected with the negative electrode of the voltage source, the control switch T1 is connected with one end of a coil of the second relay, the other end of the coil of the second relay is connected with the negative electrode of the voltage source, and the base electrodes of the control switch T1 and the control switch T2 are connected with a control signal;

when the display equipment is in video playing, the control signal is changed into high level, and the first relay and the second relay are both normally closed relays.

In a second aspect, a display device is provided, which comprises the LED energy saving circuit of the first aspect.

By implementing the embodiment of the application, the principle of the LED energy-saving circuit of the application is that for many video broadcasts, there is an effective display area during the broadcast, the areas on both sides of the middle area are generally black, and if the LED display modules on both sides are powered on, the energy consumption will be wasted, the application is realized based on the principle that when the display device needs to display in full screen, the control signal is low level, the switch corresponding to the normally closed relay is closed, the trigger signal triggers and conducts all the control switches in theleft switch module 1021, themiddle switch module 1022, and the right switch module 1023, so that the LED display modules of the whole display device all work, when the video broadcasts, the full screen display is not needed, the control signal is high level, the switch corresponding to the normally closed relay is disconnected, the trigger signal will not pass through theleft switch module 1021 and the right switch module 1023, at this time, themiddle switch module 1022 works normally, so that the watching of the video is not affected, and the energy consumption can be saved, therefore, the middle switch module has the advantages of reducing the energy consumption and the cost.

Drawings

The drawings used in the embodiments of the present application are described below.

Fig. 1 is a schematic structural diagram of an LED energy saving circuit provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a parallel connection of conductive lines according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.

The "plurality" appearing in the embodiments of the present application means two or more. The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application. The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.

Referring to fig. 1, fig. 1 provides an LED energy saving circuit, which is applied in a display device, and includes: the display device comprises a plurality ofLED display modules 101, aleft switch module 1021, amiddle switch module 1022, a right switch module 1023, acontrol module 105, a power module 103 andwires 104, wherein theleft switch module 1021, themiddle switch module 1022 and the right switch module 1023 respectively comprise a plurality ofcontrol switches 20, a collector of eachcontrol switch 20 is connected with the power module 103, the plurality ofLED display modules 101 are distributed in an array, and an emitter of eachcontrol switch 20 is electrically connected with the LED display modules in the corresponding row in the array distribution (for example, in an m & n matrix distribution) through thewires 104 and then grounded;

the base of eachcontrol switch 20 of themiddle switch module 1022 is connected to a trigger signal (the trigger signal may be a pin of the display device processor capable of outputting a high level);

eachcontrol switch 20 of theleft switch module 1021 is connected with one end of a switch K1 of thecontrol circuit 105, the other end of the switch K1 is connected with the trigger signal, and the switch K1 is controlled to be opened and closed by a coil of the relay 1;

eachcontrol switch 20 of the left switch module 1023 is connected with one end of a switch K2 of thecontrol circuit 105, the other end of the switch K1 is connected with the trigger signal, and the switch K1 is controlled to be opened and closed by a coil of the relay 2;

thecontrol circuit 105 further includes: a control switch T1, a control switch T2, and a voltage source; the positive electrode of the voltage source is connected with the collector electrodes of the control switch T1 and the control switch T2, the control switch T1 is connected with one end of the coil of the relay 1, the other end of the coil of the relay 1 is connected with the negative electrode of the voltage source, the control switch T1 is connected with one end of the coil of the relay 2, the other end of the coil of the relay 2 is connected with the negative electrode of the voltage source, and the base electrodes of the control switch T1 and the control switch T2 are connected with a control signal (the control signal may be a GPIO pin of the display device processor).

When the display device is in video playing, the control signal changes to high level, and the relay 1 and the relay 2 are both normally closed relays.

The principle of the LED energy-saving circuit is that for many video broadcasts, the display area is effective during the broadcast, the areas on both sides of the middle area are generally black, and at the moment, if the LED display modules on both sides are powered on, the energy consumption is wasted, the LED energy-saving circuit is realized based on the principle that when the display equipment needs full screen display, the control signal is at low level, the switch corresponding to the normally closed relay is closed at the moment, the trigger signal triggers and conducts all the control switches in theleft switch module 1021, themiddle switch module 1022 and the right switch module 1023, so that the LED display modules of the whole display equipment all work, when the video broadcasts, full screen display is not needed at the moment, the control signal is at high level, the switch corresponding to the normally closed relay is disconnected at the moment, the trigger signal cannot pass through theleft switch module 1021 and the right switch module 1023, and themiddle switch module 1022 works normally at the moment, thus, the energy consumption can be saved without influencing the watching of the video, and therefore, the method has the advantages of reducing the energy consumption and the cost.

In an alternative, the control switch is a Thin Film Transistor (TFT) switch.

In practical application, because the quantity of the LED display module assemblies 101 in a row is more, the subsequent voltage of the LED display module assemblies connected in series is possibly insufficient, the phenomenon that the display of the LED display module assemblies below is yellow is possible, and in order to solve the problem, the resistance of the wires between the front-end LED display module assemblies is reduced by connecting a plurality of wires in parallel at the front end, so that the voltage drop of the wires at the front end is reduced, the voltage of the LED display module assemblies below is improved, and the phenomenon that the LED display module assemblies are yellow is reduced.

In an optional scheme, the plurality of LED display modules are distributed in an m × n matrix.

In an alternative scheme, x wires are connected in parallel between the ith row of display modules and the (i + 1) th row of display modules of each row of LED modules in the m x n matrix distribution of LED display modules, wherein,

x = m-i, i is the number of rows of the m n matrix, i is greater than or equal to 1 and less than or equal to m.

Referring to fig. 2, where m =4, referring to fig. 2, 3 (4-1) wires are connected in parallel between the LED display module in row 1 and the LED display module in row 2, 2 (4-2) wires are connected in parallel between the LED display module in row 2 and the LED display module in row 3, and 1 (4-3) wires are connected in parallel between the LED display module in row 3 and the LED display module inrow 4. Therefore, the resistance of the wires is gradually increased due to the parallel wires, so that the voltage distribution of each point becomes smaller due to the wires, the yellow display phenomenon of the LED display module below is reduced, the yellow display phenomenon can only be weakened by the scheme, and the yellow display phenomenon cannot be completely avoided.

The present application also provides a display device including the LED power saving circuit as shown in fig. 1.

In an alternative, the display device includes but is not limited to: smart devices such as smart phones, smart televisions, smart refrigerators, smart speakers, smart robots, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (5)

1. An LED energy-saving circuit, which is applied in a display device, the LED energy-saving circuit comprising: the LED display module comprises a plurality of LED display modules, a left switch module, a middle switch module, a right switch module, a control module, a power module and wires, wherein the left switch module, the middle switch module and the right switch module respectively comprise a plurality of control switches, a collector of each control switch is connected with the power module, the plurality of LED display modules are distributed in an array, and an emitter of each control switch is electrically connected with the LED display modules in the corresponding array in the array distribution through the wires and then grounded;

the base electrode of each control switch of the middle switch module is connected with the trigger signal;

each control switch of the left switch module is connected with one end of a switch K1 of the control circuit, the other end of a switch K1 is connected with the trigger signal, and the switch K1 is controlled to be switched on and off by a coil of the first relay;

each control switch of the left switch module is connected with one end of a switch K2 of the control circuit, the other end of a switch K2 is connected with the trigger signal, and the switch K2 is controlled to be switched on and off by a coil of a second relay;

the control circuit further includes: a control switch T1, a control switch T2, and a voltage source; the positive electrode of the voltage source is respectively connected with the collector electrodes of the control switch T1 and the control switch T2, the control switch T1 is connected with one end of a coil of the first relay, the other end of the coil of the first relay is connected with the negative electrode of the voltage source, the control switch T1 is connected with one end of a coil of the second relay, the other end of the coil of the second relay is connected with the negative electrode of the voltage source, and the base electrodes of the control switch T1 and the control switch T2 are connected with a control signal;

when the display equipment is in video playing, the control signal is changed into high level, and the first relay and the second relay are both normally closed relays.

2. The LED power saving circuit of claim 1,

the control switch is a Thin Film Transistor (TFT) switch.

3. The LED power saving circuit of claim 1,

the LED display modules are distributed in an m x n matrix.

4. The LED power saving circuit of claim 1,

x wires are connected in parallel between the ith row of display modules and the (i + 1) th row of display modules of each row of LED display modules distributed in an m x n matrix, wherein,

x = m-i, i is the number of rows of the m n matrix, i is greater than or equal to 1 and less than or equal to m.

5. A display device, characterized in that the display device comprises a LED power saving circuit according to any one of claims 1-4.

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