CN209843126U - LED display system - Google Patents
LED display system Download PDFInfo
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- CN209843126U CN209843126U CN201920590585.5U CN201920590585U CN209843126U CN 209843126 U CN209843126 U CN 209843126U CN 201920590585 U CN201920590585 U CN 201920590585U CN 209843126 U CN209843126 U CN 209843126U
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Abstract
The utility model discloses a LED display system for example includes: the display control system comprises a plurality of display control cards, a plurality of display control cards and a display control card, wherein each display control card comprises a first alternating current power supply input port for connecting an alternating current power supply, an alternating current power supply cascade port and a plurality of first display panel signal output interfaces, and the first alternating current power supply input port is connected with the alternating current power supply cascade port; the second display control card comprises a second alternating current power supply input port and a plurality of paths of second display panel signal output interfaces; the second alternating current power supply input port is connected with the alternating current power supply cascade port; the LED display screen comprises a first LED display panel group and a second LED display panel group, wherein a display signal input interface and a power supply signal input interface of the first LED display panel group are connected with a plurality of paths of first display panel signal output interfaces; and a display signal input interface and a power supply signal input interface of the second LED display panel group are connected with a plurality of second display panel signal output interfaces.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a LED display system.
Background
In the conventional display industry, the power supply and the display control board of an LED display panel, such as an LED display panel, are independent of each other. In a mounting screen application scene, wiring of an LED display system is very disordered and complex (see fig. 1), errors are easy to occur, a debugging platform is often required to be built at a huge time cost, and along with the development of the LED display industry, the point distance is smaller and smaller, the cost pressure is larger and larger, and the requirements of customers are difficult to meet by the prior art scheme.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the present invention provides an LED display system, which can reduce the complexity of the wiring of the LED display system.
Specifically, the embodiment of the utility model provides a LED display system, include: the display control system comprises a plurality of display control cards, a first display control card and a second display control card, wherein the first display control card comprises a first alternating current power supply input port for connecting an alternating current power supply, an alternating current power supply cascade port and a plurality of first display panel signal output interfaces, and the first alternating current power supply input port is connected with the alternating current power supply cascade port; the second display control card comprises a second alternating current power supply input port and a plurality of paths of second display panel signal output interfaces; the second alternating current power supply input port is connected with the alternating current power supply cascade port; the LED display screen comprises a first LED display panel group and a second LED display panel group, wherein a display signal input interface and a power supply signal input interface of the first LED display panel group are connected with the multiple paths of first display panel signal output interfaces; and the display signal input interface and the power signal input interface of the second LED display panel group are connected with the multi-path second display panel signal output interface.
In an embodiment of the present invention, all the LED display panels of the first LED display panel group are arranged in a single row or a single column to form a straight LED display panel group, and the first display control card is fixed at a middle position in a length direction of the straight LED display panel group.
In an embodiment of the present invention, all the LED display panels of the first LED display panel group are arranged in multiple rows and multiple columns to form a determinant LED display panel group, and the first display control card is fixed at a middle position of the determinant LED display panel group.
In one embodiment of the present invention, the voltage of the alternating current supplied by the alternating current power supply is not higher than 220V; the power range of a single LED display panel is 10W-30W; each path of first display panel signal output interface comprises a power supply signal connecting seat and a display signal transmission seat, the voltage of direct current output by the power supply signal connecting seat is not higher than 5V and is connected with one power supply signal input interface of the first LED display panel group, and the display signal transmission seat is connected with one display signal input interface of the first LED display panel group.
In one embodiment of the present invention, the power signal connecting socket is a 4-pin connector and includes two positive pins and two negative pins; the display signal transmission seat is a pin header seat of 16 or 26 pins.
In one embodiment of the present invention, the number of the plurality of first display panel signal output interfaces is 6, 8, 12, or 16.
In an embodiment of the present invention, the first display control card further includes: the first alternating current power supply input port, the alternating current power supply cascade port and the multi-path first display board signal output interface are arranged on the circuit board; the alternating current-to-direct current power supply circuit is arranged on the circuit board and is connected with the first alternating current power supply input port and the multi-path first display panel signal output interface; the display signal processing circuit is positioned on the circuit board and is connected with the multi-path first display panel signal output interface and the alternating current-to-direct current power supply circuit; and the first Ethernet interface is arranged on the circuit board, is of a double-network-port structure and comprises a first display signal input port used for receiving display signals, and the first display signal input port is connected with the display signal processing circuit.
In an embodiment of the present invention, the display signal processing circuit includes: the system comprises a programmable logic device, a microcontroller, an Ethernet physical layer transceiver and a direct current-to-direct current power supply circuit; the Ethernet physical layer transceiver is connected between the first display signal input port and the programmable logic device, the microcontroller is connected with the programmable logic device, and the direct current-to-direct current power circuit is connected with the programmable logic device, the microcontroller, the Ethernet physical layer transceiver and the alternating current-to-direct current power circuit.
In an embodiment of the present invention, the first display control card further includes a network transformer chip, the network transformer chip is connected between the first display signal input port and the ethernet physical layer transceiver; the first Ethernet interface further comprises a display signal cascade port, and the display signal cascade port is connected with the Ethernet physical layer transceiver through the network transformer chip; the second display control card comprises a second ethernet interface, the second ethernet interface comprises a second display signal input port for receiving a display signal, and the second display signal input port is connected to the display signal cascade port of the first ethernet interface.
In an embodiment of the present invention, the first display control card further includes a core board, the circuit board is provided with a connecting member, and the core board is inserted into the connecting member; the display signal processing circuit is disposed on the core board.
One of the above technical solutions has the following advantages or beneficial effects: the embodiment of the utility model provides a cascade formation LED display system through the display control card that the adoption has AC to DC power supply circuit and AC power supply and cascades the port, reduced the power and cascaded quantity, reduced line quantity to make and walk the line very simple clean and tidy, reduced LED display system's wiring complexity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating an effect of a line connection relationship of an LED display system in the prior art.
Fig. 2 is a schematic structural diagram of an LED display system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the display control card shown in fig. 2.
Fig. 4 is another schematic structural diagram of an LED display system according to an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating an effect of a line connection relationship of the LED display system according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a core board of another display control card according to another embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a circuit board of the display control card shown in fig. 6.
FIGS. 8a-8d are diagrams illustrating the main circuit connections of some components in the display control card shown in FIG. 2.
Fig. 9a-9c are schematic diagrams of 3 arrangements of LED display panel groups in the LED display system shown in fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2, an embodiment of the present invention provides an LED display system 10. The LED display system 10 includes, for example, an LED display screen and a plurality of display control cards mounted on the back of the LED display screen.
The display control card is, for example, a display control board card or a display control device including an ac-to-dc power supply circuit, a display signal processing circuit, and various interfaces, and has functions of receiving a display signal from a transmitting card or other transmitting devices, processing the display signal, and outputting display data and a control signal. For convenience of illustration, the present embodiment takes two display control cards, such as the display control card 100 and the display control card 300, as an example, to illustrate the connection relationship between the two display control cards and the LED display screen.
Specifically, as shown in fig. 2, the display control card 100 includes an ac power input port 121 for connecting an ac power, an ac power cascade port 123, and a multi-panel signal output interface 130. The ac power cascade port 123 is connected to the ac power input port 121. The ac power source may provide ac power at a voltage of, for example, not higher than 220V. The number of the plurality of panel signal output interfaces 130 is, for example, 6, 8, 12, or 16. Each display panel signal output interface 130 includes, for example, a power signal connection socket 131 and a display signal transmission socket 133. The voltage of the dc power output by the power signal connecting socket 131 is not higher than 5V. The power signal connection socket 131 is, for example, a 4-pin connector and includes two positive pins and two negative pins. The display signal transmitting pad 133 includes, for example, display data output pins such as red (R), green (G), and blue (B) signals, and related control signal output pins such as enable signal (OE), blanking signal (CTRL), and clock signal (CLK). The display signal transmission socket 133 is, for example, a 16 or 26pin header so that the display signal transmission socket 133 and the LED display panel can be connected by a flexible flat cable. Of course, the power signal connecting seat 131 and the display signal transmitting seat 133 may also be connectors with other forms and pin numbers, which is not limited by the present invention.
In addition, as shown in fig. 3 and 4, the display control card 100 further includes a circuit board 110, an ac-to-dc power circuit 160, a display signal processing circuit 150, an ethernet interface 140, and the like. The circuit Board 110 is, for example, a Printed Circuit Board (PCB). The ac power input port 121, the ac power cascade port 123 and the multi-panel signal output interface 130 are disposed on the circuit board 110.
As described above, the ac-dc power circuit 160 is disposed on the circuit board 110. The ac-to-dc power supply circuit 160 includes, for example, a rectifier filter circuit that converts an input ac power into a dc power, for example, an ac power having a voltage of not higher than 220V into a dc power having a voltage of not higher than 5V. The ac-to-dc power circuit 160 is connected to the ac power input port 121, the power signal connecting socket 131 of the multi-panel signal output interface 130, and the display signal processing circuit 150. The ac-to-dc power circuit 160 receives 220V ac power from an external ac power source, converts the ac power, and outputs the converted ac power through the power signal connecting socket 131 of the multi-display panel signal output interface 130, so as to be used by the present-stage display control card 100 and the LED display panel carried by the present-stage display control card. It should be noted that the AC-DC power circuit 160 of this embodiment can be constructed by using similar electronic components in a commercially available AC-DC power supply, and therefore, the specific circuit structure thereof is not described herein again. When the next-stage display control card needs to be cascaded, the ac power cascade port 123 provides 220V ac power for the next-stage display control card and its loaded LED display panel.
An ethernet interface 140 is provided on the circuit board 110. The ethernet interface 140 is a dual-network interface structure and includes a display signal input port 141 and a display signal cascade port 143. The display signal input port 141 and the display signal cascade port 143 are, for example, RJ45 ports. The display signal input port 141 receives an input of a display signal through a network cable, for example. When the next-stage display control card needs to be cascaded, the display signal cascade port 143 outputs a display signal, for example, through a network cable to transmit a display signal not belonging to the current-stage display control card 100 to the cascaded next-stage display control card.
The display signal processing circuit 150 is located on the circuit board 110. The display signal processing circuit 150 is connected to the ac-to-dc power circuit 160 to take power from the ac-to-dc power circuit 160. The display signal processing circuit 150 is connected to the display signal input port 141 and the display signal transmission socket 133 of the multi-panel signal output interface 130. The display signal processing circuit 150 processes the display signal (for example, including display data and field frequency signal) acquired from the display signal input port 141 to obtain display data and a control signal required by the LED display panel, and outputs the display data and the control signal to the LED display panel carried by the display control card 100 through the display signal transmission socket 133 for displaying a picture.
As described above, as shown in fig. 3, the display signal processing circuit 150 includes, for example, a programmable logic device 152, a microcontroller 154, an ethernet physical layer transceiver 153, and a dc-dc power supply circuit 151. The programmable logic device 152 is, for example, a Field Programmable Gate Array (FPGA) device, for example, of a type EP3C16F484, and is mainly used for processing a display signal to generate display data and a control signal for an LED display panel. The microcontroller 154 is, for example, an MCU, and its model is, for example, GD32F130, and is mainly used for loading the programmable logic device 152, and even for performing temperature and humidity detection, voltage detection, etc. by connecting a sensor. An ethernet physical layer transceiver 153 is connected between the ethernet interface 140 and the programmable logic device 152. The microcontroller 154 is connected to the programmable logic device 152. The dc-dc power supply circuit 151 is connected to the ac-dc power supply circuit 160. The dc-to-dc power supply circuit 151 is also connected to a programmable logic device 152, a microcontroller 154 and an ethernet physical layer transceiver 153. The ac-to-dc power circuit 160 converts ac power to dc power and outputs a suitable voltage to the dc-to-dc power circuit 151, and the dc-to-dc power circuit 151 converts the input dc power and outputs the converted dc power to the programmable logic device 152, the microcontroller 154, and the ethernet physical layer transceiver 153. In addition, as shown in fig. 3, the display signal processing circuit 150 may further include a nonvolatile memory 155 such as FLASH. The non-volatile memory 155 is used for storing data of the display control card 100, so as to prevent data loss after the display control card 100 is powered down. The display signal processing circuit 150 may also include volatile memory 156, such as SDRAM, with the volatile memory 156 providing data buffer space. The dc-dc power supply circuit 151 is also connected to a nonvolatile memory 155 and a volatile memory 156.
Furthermore, as shown in fig. 3, the display control card 100 may further include a network transformer chip 170. The network transformer chip 170 is disposed on the circuit board 110. The network transformer chip 170 is connected between the ethernet interface 140 and the ethernet physical layer transceiver 153. As shown in fig. 3, the display control card 100 may further include a signal driving chip 180. The signal driving chip 180 is disposed on the circuit board 110. The signal driving chip 180 is connected to the ac-to-dc power circuit 160 to obtain a dc operating voltage. In addition, there may be a plurality of signal driving chips 180, and the plurality of display signal transmission pads 133 are respectively connected to the display signal processing circuit 150 through the plurality of signal driving chips 180.
Further, the display control card 300 and the display control card 100 may be the same display control card. Therefore, the types of the display control cards in the LED display system 10 can be reduced, the cost can be saved, and the possibility of a wiring error during the installation and wiring of the LED display system 10 can be avoided.
Specifically, as shown in fig. 2, the display control card 300 includes an ac power input port 321 and a plurality of panel signal output interfaces 330. The ac power input port 321 of the display control card 300 is connected to the ac power cascade port 123 of the display control card 100 to get power. Each of the panel signal output interfaces 330 includes, for example, a power signal connection pad 331 and a display signal transmission pad 333. The voltage of the direct current output by the power signal connecting base 331 is not higher than 5V. The power signal connection base 331 is, for example, a 4-pin connector, and includes two positive pins and two negative pins. The display signal transmitting pad 333 includes, for example, display data output pins such as red (R), green (G), and blue (B) signals, and related control signal output pins such as enable signal (OE), blanking signal (CTRL), and clock signal (CLK). The display signal transmission holder 333 is, for example, a 16 or 26pin header, so that the display signal transmission holder 333 and the LED display panel can be connected by a flexible flat cable. Further, as shown in fig. 4, the display control card 300 may further include an ac power cascade port 323 to cascade the rear display control card.
The LED display screen includes, for example, a plurality of LED display panels connected to a display control card, and receives display data and control signals output by the display control card to perform screen display. The LED display screen, for example, includes an LED display panel set 200 and an LED display panel set 400, for example, the LED display panel set 200 is connected to the display control card 100, and the LED display panel set 400 is connected to the display control card 300.
Specifically, as shown in fig. 2, the LED display panel group 200 includes a plurality of LED display panels 201, …, 20n, where n is a natural number. A plurality of LED display panels here can be the same lamp plate, also can be different lamp plates, the utility model discloses not use this as the limit. Each LED panel includes a power signal input interface and a display signal input interface, e.g., LED panel 201 includes a power signal input interface 2011 and a display signal input interface 2013. The power signal input interfaces of all the LED display panels 201, …, 20n in the LED display panel set 200 are connected to the plurality of power signal connection sockets 131 of the multi-display panel signal output interface 130 of the display control card 100 in a one-to-one correspondence so as to obtain the operating voltage from the display control card 100. The display signal input interfaces of all the LED display panels 201, …, 20n in the LED display panel set 200 are connected to the plurality of display signal transmission sockets 133 of the multi-display panel signal output interface 130 of the display control card 100 in a one-to-one correspondence so as to obtain the display data and the control signals from the display control card 100, thereby implementing the image display.
As described above, as shown in fig. 2, the LED display panel group 400 includes a plurality of LED display panels 401, …, 40m, where m is a natural number. Each LED display panel includes a power signal input interface and a display signal input interface, and for example, the LED display panel 401 includes a power signal input interface 4011 and a display signal input interface 4013. The power signal input interfaces of all the display panels 401, …, 40m in the LED display panel set 400 are connected to the plurality of power signal connection pads 331 of the multi-display panel signal output interface 330 of the display control card 300 in a one-to-one correspondence, so as to obtain the operating voltage from the display control card 300. The display signal input interfaces of all the LED display panels 401, …, and 40m in the LED display panel set 400 are connected to the plurality of display signal transmission sockets 333 of the multi-channel display panel signal output interface of the display control card 300 in a one-to-one correspondence manner, and obtain the display data and the control signals from the display control card 300 to implement the image display. Thus, the number of power supply cascades on the LED display system 10 is significantly reduced, the number of wires is increased (see fig. 5), the wiring of the LED display system 10 is very simple and neat, and the wiring complexity of the LED display system is reduced.
In addition, as shown in fig. 4, display control card 300 further includes an ethernet interface 340. Ethernet interface 340 includes a display signal input port 341. The display signal input port 341 is connected to the display signal cascade port 143 of the ethernet interface 140 of the display control card 100 to receive the display signal from the display control card 100. In addition, the ethernet interface 340 may further include a display signal cascade port 343 to cascade the subsequent display control cards. Preferably, the ethernet interface 340 is also a dual-port structure. Of course, the display signal input port 341 may receive the display signal directly from the transmitting card or other device instead of the display signal cascade port 143 of the ethernet interface 140 of the display control card 100.
In addition, in other embodiments of the present invention, as shown in fig. 6, the display control card 100 further includes a core board 500. The display signal processing circuit 150 located on the circuit board 110 is disposed on the core board 500, not directly on the circuit board 110. Specifically, as shown in fig. 7, the display signal processing circuit 150 in fig. 3 is replaced with the connector 113. The core board 500 is plugged to the connector 113 on the circuit board 110. In addition, the ac-dc power supply circuit 160 provided on the circuit board 110 is connected to the dc-dc power supply circuit 151 of the display signal processing circuit 150 provided on the core board 500 through the connector 113. The network transformer chip 170 disposed on the circuit board 110 is connected to the ethernet physical layer transceiver 153 of the display signal processing circuit 150 disposed on the core board 500 through the connector 113. Therefore, by reserving a connection interface on the circuit board 110, flexible replacement and later-stage function expansion and upgrading of the core board 500 are facilitated. In addition, the connectors 113 are, for example, connectors such as row female connectors arranged in pairs, and the core board 500 is also provided with connectors 510 such as row pin connectors arranged in pairs, which are matched with the connectors 113, so that the core board 500 can be quickly inserted on the circuit board 110. Of course, other circuits and/or electronic components on the circuit board 110 may be selectively disposed on the core board 500 according to the actual application.
The main circuit connection relationships of some components in this embodiment are shown in fig. 8a to 8 d. Specifically, fig. 8a-8c are diagrams of the main circuit connections of the programmable logic device 152, and fig. 8d is a diagram of the main circuit connections of the microcontroller 154.
In addition, in terms of the arrangement of the LED display panels, all the LED display panels of the LED display panel group 200 and/or the LED display panel group 400 may be arranged to form different forms of LED display panel groups, so as to meet the wiring requirements of the display control card and the LED display panel groups under different conditions. The LED panel assembly 200 will be described below as an example.
As shown in fig. 9a, all the LED display panels of the LED display panel group 200 are arranged in a single row or a single column to form a linear LED display panel group, and the display control card 100 is installed, for example, at a middle position in a length direction (e.g., a vertical direction in fig. 9 a) of the linear LED display panel group. This arrangement is suitable for high height LED displays. The LED display screen is built in such a way, the wiring is simple and neat, the utilization rate is highest, the LED display screen is finally arranged into a line, and the maintenance is convenient and fast. For example, as shown in fig. 9a, the number of LED display panels of the LED display panel group 200 is 16, and the LED display panels are arranged in a single row to form a linear LED display panel group.
For another example, as shown in fig. 9b, all the LED display panels of the LED display panel group 200 are arranged in multiple rows and multiple columns to form a column LED display panel group, and the display control card 100 is installed at a middle position of the column LED display panel group, for example. The LED display screen is built in such a way, and the problem that the wiring of a data line and a power line is long can be avoided. For example, the number of the LED display panels in the LED display panel group is 16, and 16 LED display panels are spliced to form an LED display panel group with eight rows and two columns. Further, as shown in fig. 9c, the plurality of LED display panels of the LED display panel group 200 are arranged to form a column-row LED display panel group having the same number of rows and columns. The LED display screen is built in such a way, and the problem that the wiring of a data line and a power line is long can be avoided. For example, the number of LED display panels of LED display panel set 200 is 16, and 16 LED display panels are arranged to form a four-row and four-column LED display panel set. Of course, the user can arrange the LED display screens according to the actual situation and the needs of the LED display screens.
In addition, in the aspect of power configuration of the display control card, the power configuration can be configured according to the number of the LED display panels carried by the display card control card and the maximum power of a single LED display panel. The power range of a single LED display panel of the LED display screen is, for example, 10W-30W. The number of the LED display panels carried by each display control card can be determined by the number of the display signal transmission seats (133 or 333), so that the input power of the display control card can be determined, the matching of the parameters of the display control card and the power supply power is realized, the power supply efficiency is improved, and the cost is saved.
To sum up, the embodiment of the utility model provides a through the adoption have exchange to change direct current power supply circuit and alternating current power supply cascade the display control card that the port cascades and forms LED display system, reduced the power and cascaded quantity, reduced line quantity to make the line of walking very simple clean and tidy, the wiring with maintain convenient and fast, reduced LED display system's wiring complexity, promoted wiring efficiency and reduced the fault probability. In addition, a plurality of LED display panels of the LED display screen adopt a specific arrangement mode and are connected with the display control card, the length of a power supply connecting wire and/or a data connecting wire can be further shortened, the wiring of the LED display system is further optimized, and the stability of the system can be improved.
Furthermore, it should be understood that the foregoing embodiments are only exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated for use on the premise that the technical features are not conflicted, the structure is not contradictory, and the purpose of the present invention is not violated.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An LED display system, comprising:
a plurality of display control cards including a first display control card and a second display control card, wherein,
the first display control card comprises a first alternating current power supply input port for connecting an alternating current power supply, an alternating current power supply cascade port and a plurality of first display panel signal output interfaces, and the first alternating current power supply input port is connected with the alternating current power supply cascade port;
the second display control card comprises a second alternating current power supply input port and a plurality of paths of second display panel signal output interfaces; the second alternating current power supply input port is connected with the alternating current power supply cascade port;
the LED display screen comprises a first LED display board group and a second LED display board group, wherein,
the display signal input interface and the power signal input interface of the first LED display panel group are connected with the multi-path first display panel signal output interface;
and the display signal input interface and the power signal input interface of the second LED display panel group are connected with the multi-path second display panel signal output interface.
2. The LED display system of claim 1, wherein all the LED display panels of the first LED display panel group are arranged in a single row or a single column to form a straight LED display panel group, and the first display control card is fixed to a middle position of the straight LED display panel group in a length direction.
3. The LED display system of claim 1, wherein all of the LED display panels of the first set of LED display panels are arranged in a plurality of rows and columns to form a set of determinant LED display panels, and the first display control card is fixed to a middle position of the set of determinant LED display panels.
4. The LED display system of claim 1, wherein the ac power source provides ac power at a voltage of no more than 220V; the power range of a single LED display panel is 10W-30W; each path of first display panel signal output interface comprises a power supply signal connecting seat and a display signal transmission seat, the voltage of direct current output by the power supply signal connecting seat is not higher than 5V and is connected with one power supply signal input interface of the first LED display panel group, and the display signal transmission seat is connected with one display signal input interface of the first LED display panel group.
5. The LED display system of claim 4, wherein the power signal connection socket is a 4-pin connector and includes two positive pins and two negative pins; the display signal transmission seat is a pin header seat of 16 or 26 pins.
6. The LED display system of claim 1, wherein the number of the plurality of first display panel signal output interfaces is 6, 8, 12, or 16.
7. The LED display system of any of claims 1 to 6, wherein the first display control card further comprises:
the first alternating current power supply input port, the alternating current power supply cascade port and the multi-path first display board signal output interface are arranged on the circuit board;
the alternating current-to-direct current power supply circuit is arranged on the circuit board and is connected with the first alternating current power supply input port and the multi-path first display panel signal output interface;
the display signal processing circuit is positioned on the circuit board and is connected with the multi-path first display panel signal output interface and the alternating current-to-direct current power supply circuit; and
the first Ethernet interface is of a double-network-port structure and comprises a first display signal input port used for receiving display signals, and the first display signal input port is connected with the display signal processing circuit.
8. The LED display system of claim 7, wherein the display signal processing circuit comprises: the system comprises a programmable logic device, a microcontroller, an Ethernet physical layer transceiver and a direct current-to-direct current power supply circuit; the Ethernet physical layer transceiver is connected between the first display signal input port and the programmable logic device, the microcontroller is connected with the programmable logic device, and the direct current-to-direct current power circuit is connected with the programmable logic device, the microcontroller, the Ethernet physical layer transceiver and the alternating current-to-direct current power circuit.
9. The LED display system of claim 8, wherein the first display control card further comprises a network transformer chip connected between the first display signal input port and the ethernet physical layer transceiver; the first Ethernet interface further comprises a display signal cascade port, and the display signal cascade port is connected with the Ethernet physical layer transceiver through the network transformer chip; the second display control card comprises a second ethernet interface, the second ethernet interface comprises a second display signal input port for receiving a display signal, and the second display signal input port is connected to the display signal cascade port of the first ethernet interface.
10. The LED display system of claim 8, wherein the first display control card further comprises a core board, the circuit board having a connector disposed thereon, the core board being plugged into the connector; the display signal processing circuit is disposed on the core board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920590585.5U CN209843126U (en) | 2019-04-26 | 2019-04-26 | LED display system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920590585.5U CN209843126U (en) | 2019-04-26 | 2019-04-26 | LED display system |
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| CN209843126U true CN209843126U (en) | 2019-12-24 |
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| CN201920590585.5U Active CN209843126U (en) | 2019-04-26 | 2019-04-26 | LED display system |
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| Country | Link |
|---|---|
| CN (1) | CN209843126U (en) |
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2019
- 2019-04-26 CN CN201920590585.5U patent/CN209843126U/en active Active
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