Blank screen control device and system of lamp panel

Abstract

The utility model discloses a black screen control device and system of a lamp panel. The black screen control device of the lamp panel comprises a line concentration board, a field effect transistor and lamp panel interfaces are arranged on the line concentration board, the lamp panel interfaces comprise a first interface and a second interface, the field effect transistor is connected with a connecting line corresponding to the lamp panel interfaces, the first interface is used for being connected with a signal circuit arranged on the lamp panel, and the second interface is used for being connected with a signal circuit arranged on the lamp panel. The second interface is used for being connected with a power supply circuit arranged on the lamp panel, the field effect transistor is provided with a source electrode pin, a grid electrode pin and a drain electrode pin, and the drain electrode pin is used for being connected with the corresponding input end of the power supply circuit so as to control the power supply state of the lamp panel by controlling the power supply circuit. According to the utility model, the technical problems of high power consumption and difficulty in achieving the purpose of energy conservation in the prior art of realizing the black screen of the lamp panel by using a chip are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of line concentrator board, specifically, a lamp panel black screen control device, system. BACKGROUND

[0002] Lamp panel is widely used in daily life, and lamp panel black screen energy saving is of great significance for saving power resources. At present, the main method to realize lamp panel black screen energy saving is to use a device with a control chip to reduce the brightness of the lamp panel and reduce power consumption. However, this device does not realize true black screen energy saving, and the addition of the control chip also increases the cost of the device.

[0003] At present, there is no effective solution to the above problems. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a lamp panel black screen control device, system to at least solve the technical problem that the related art uses a chip to realize lamp panel black screen and has large power consumption and is difficult to achieve the purpose of energy saving.

[0005] According to an aspect of the utility model embodiment, a lamp panel black screen control device is provided, which comprises a line concentrator board, wherein the line concentrator board is provided with a field effect tube and a lamp panel interface, the lamp panel interface comprises a first interface and a second interface, the field effect tube is connected with the corresponding connection line of the lamp panel interface, the first interface is used to be connected with a signal circuit provided on the lamp panel, the signal circuit is used to control the state of the lamp panel, the second interface is used to be connected with a power supply circuit provided on the lamp panel, the power supply circuit is used to supply power to the lamp panel, the field effect tube is provided with a source electrode pin, a gate electrode pin and a drain electrode pin, the source electrode pin is used to be connected with a predetermined power supply to supply power to the black screen control device, the gate electrode pin is used to be connected with a predetermined receiving card to receive a control signal sent by the predetermined receiving card and control the on-off state of the field effect tube, and the drain electrode pin is used to be connected with the corresponding input end of the power supply circuit to control the power supply state of the lamp panel by controlling the power supply circuit.

[0006] Optionally, the line concentrator board is further provided with a signal amplifier, wherein the signal amplifier is provided with an input end, a first output end and a second output end, the first output end is connected with the gate electrode pin, the corresponding input end of the signal amplifier is used to be connected with the predetermined receiving card to amplify the control signal sent by the predetermined receiving card, the gate electrode pin is used to be connected with the predetermined receiving card through the signal amplifier, and the second output end is used to be connected with the signal circuit; the corresponding input end of the signal circuit is used to be connected with the predetermined receiving card through the signal amplifier.

[0007] Optionally, the black screen control device further comprises a predetermined receiving card, wherein the gate pin of the field effect tube is connected with the predetermined receiving card to receive a control signal sent by the predetermined receiving card to control the switching state of the field effect tube; the input end corresponding to the signal circuit is used to be connected with the predetermined receiving card; the output end corresponding to the signal circuit is used to be connected with the predetermined receiving card; and the output end corresponding to the power supply circuit is used to be connected with the predetermined receiving card.

[0008] Optionally, the black screen control device further comprises a predetermined power supply, wherein the source pin of the field effect tube is connected with the predetermined power supply to supply power for the black screen control device.

[0009] Optionally, the hub board is further provided with a security chip, wherein the security chip is connected with the field effect tube.

[0010] Optionally, the black screen control device further comprises a sensor, wherein the sensor is connected with the hub board.

[0011] Optionally, the hub board further comprises an expansion interface.

[0012] Optionally, the hub board is further provided with a data storage chip.

[0013] Optionally, the hub board is further provided with a field programmable gate array chip.

[0014] According to an aspect of the embodiment of the utility model, a kind of black screen control system of lamp board is provided, comprising: the black screen control device of lamp board of, lamp board, wherein signal circuit and power supply circuit are provided on the lamp board, black screen control device is connected with the signal circuit arranged on the lamp board by first interface, signal circuit is used to control the state of lamp board, black screen control device is connected with the power supply circuit arranged on the lamp board by second interface, and power supply circuit is used to power for lamp board.

[0015] In the embodiment of the utility model, adopt the collection line board, wherein, the collection line board is provided with field effect tube, lamp board interface, the lamp board interface includes first interface and second interface, field effect tube and the connecting line connection corresponding to the lamp board interface, first interface is used for connecting with the signal circuit that sets up on the lamp board, signal circuit is used for controlling the state of lamp board, second interface is used for connecting with the power supply circuit that sets up on the lamp board, power supply circuit is used for power supply for the lamp board, field effect tube is provided with source electrode pin, grid electrode pin and drain electrode pin, source electrode pin is used for connecting with predetermined power supply to power for black screen control device, grid electrode pin is used for connecting with predetermined receiving card to receive the control signal that predetermined receiving card sends, control the switch state of field effect tube, drain electrode pin is used for connecting with the input end corresponding to power supply circuit to control the power supply state of lamp board through control power supply circuit. Through grid electrode pin on field effect tube and predetermined receiving card connection to receive the control signal that predetermined receiving card sends, control the switch state of field effect tube, drain electrode pin and the input end corresponding to power supply circuit are connected, reach the effect of control the power supply state of lamp board, that is, reach the purpose of black screen through setting up field effect tube in collection line board, reach the energy saving effect, and then solve the technical problem that the chip is used to realize the lamp board black screen in the related art, and the technical problem that it is difficult to achieve the energy saving purpose with large power consumption. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0017] Figure 1 It is the structure schematic diagram of black screen control device of the lamp board according to the embodiment of the utility model;

[0018] Figure 2 It is the structure schematic diagram of black screen control device according to the optional implementation of the utility model;

[0019] Figure 3 It is the structure schematic diagram of lamp board interface according to the optional implementation of the utility model.

[0020] Among them, the following reference signs are included in the above drawings:

[0021] 10, collection line board;20, field effect tube;30, lamp board interface. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0023] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a system, product or device including a series of units does not have to be limited to those units clearly listed, but can include other units not clearly listed or inherent to these products or devices.

[0024] Embodiment 1

[0025] According to the embodiments of the present application, a black screen control device of a lamp panel is provided, Figure 1 is a structural schematic diagram of the black screen control device of the lamp panel according to the embodiments of the present application, as Figure 1 shown, the device comprises: a concentrator plate 10, wherein the concentrator plate 10 is provided with a field effect tube 20, a lamp panel interface 30, the lamp panel interface 30 comprises a first interface and a second interface, the field effect tube 20 is connected with the corresponding connection line of the lamp panel interface 30, the first interface is used for connecting with the signal circuit provided on the lamp panel, the signal circuit is used for controlling the state of the lamp panel, the second interface is used for connecting with the power supply circuit provided on the lamp panel, the power supply circuit is used for supplying power to the lamp panel, the field effect tube 20 is provided with a source electrode pin, a gate electrode pin and a drain electrode pin, the source electrode pin is used for connecting with a predetermined power supply to supply power to the black screen control device, the gate electrode pin is used for connecting with a predetermined receiving card to receive the control signal sent by the predetermined receiving card, control the on-off state of the field effect tube 20, and the drain electrode pin is used for connecting with the corresponding input end of the power supply circuit to control the power supply state of the lamp panel by controlling the power supply circuit.

[0026] In the black screen control device of the lamp panel, the concentrator 10 is adopted, wherein the concentrator 10 is provided with the field effect tube 20, the lamp panel interface 30, the lamp panel interface 30 comprises the first interface and the second interface, the field effect tube 20 is connected with the connecting line corresponding to the lamp panel interface 30, the first interface is used for being connected with the signal circuit provided on the lamp panel, the signal circuit is used for controlling the state of the lamp panel, the second interface is used for being connected with the power supply circuit provided on the lamp panel, the power supply circuit is used for supplying power for the lamp panel, the field effect tube 20 is provided with the source electrode pin, the gate electrode pin and the drain electrode pin, the source electrode pin is used for being connected with the predetermined power supply to supply power for the black screen control device, the gate electrode pin is used for being connected with the predetermined receiving card to receive the control signal sent by the predetermined receiving card, control the switching state of the field effect tube 20, and the drain electrode pin is used for being connected with the input end corresponding to the power supply circuit to control the power supply state of the lamp panel by controlling the power supply circuit. The gate electrode pin on the field effect tube 20 is connected with the predetermined receiving card to receive the control signal sent by the predetermined receiving card, control the switching state of the field effect tube 20, and the drain electrode pin is connected with the input end corresponding to the power supply circuit, so that the power supply state of the lamp panel is controlled, that is, the field effect tube 20 is arranged in the concentrator 10 to achieve the black screen purpose, the energy saving effect is achieved, and the technical problem that the chip is used to realize the lamp panel black screen in the related art is difficult to achieve the energy saving purpose due to large power consumption is solved.

[0027] As an optional embodiment, the signal amplifier is further arranged on the concentrator 10, wherein the signal amplifier is provided with the input end, the first output end and the second output end, the first output end is connected with the gate electrode pin, the input end corresponding to the signal amplifier is used for being connected with the predetermined receiving card to amplify the control signal sent by the predetermined receiving card, the gate electrode pin is used for being connected with the predetermined receiving card through the signal amplifier, and the second output end is used for being connected with the signal circuit; the input end corresponding to the signal circuit is used for being connected with the predetermined receiving card through the signal amplifier.

[0028] In the embodiment, the signal amplifier is arranged on the concentrator 10, the signal amplifier is used for enhancing the control signal from the predetermined receiving card to the field effect tube 20 in the concentrator 10, in the case that the line is long or the line resistance is large, the signal will gradually attenuate in the transmission process, the signal amplifier can enhance the signal, so that the signal is still clear and complete when reaching the field effect tube 20, the control problem caused by signal attenuation is avoided, so that the field effect tube 20 can receive the correct signal to control the power supply circuit of the lamp panel.

[0029] As an optional embodiment, the black screen control device further comprises a predetermined receiving card, wherein the gate pin of the field effect tube 20 is connected with the predetermined receiving card to receive the control signal sent by the predetermined receiving card, and the signal circuit corresponding input end is used for connecting with the predetermined receiving card; the signal circuit corresponding output end is used for connecting with the predetermined receiving card; and the power supply circuit corresponding output end is used for connecting with the predetermined receiving card.

[0030] In this embodiment, the black screen control device is provided with a predetermined receiving card, which is responsible for receiving signals from the lamp panel signal area and converting them into a signal format suitable for the field effect tube 20 to receive, and then sending the signals to the field effect tube 20 in the hub board 10 to control the switching state of the field effect tube 20.

[0031] It should be noted that the receiving card can also monitor the voltage state of the lamp panel circuit in real time, and when the voltage of the lamp panel circuit decreases below the voltage threshold, it sends a signal to the field effect tube 20 in the hub board 10 to take measures to protect the lamp panel and prevent damage.

[0032] As an optional embodiment, the black screen control device further comprises a power supply, wherein the source pin of the field effect tube 20 is connected with the predetermined power supply to supply power to the black screen control device.

[0033] As an optional embodiment, the hub board 10 is further provided with a security chip, wherein the security chip is connected with the field effect tube 20.

[0034] In this embodiment, the hub board 10 is provided with a security chip, which can provide security functions such as data encryption and identity verification. The connection of the security chip with the field effect tube 20 can add a security mechanism in the process of control signal transmission, ensuring that only signals that have passed identity verification and authorization can control the switching state of the field effect tube 20, adjust the power supply of the lamp panel, protect the signals transmitted in the hub board 10 from unauthorized access and attack, and improve the security of the black screen control device.

[0035] As an optional embodiment, the black screen control device further comprises a sensor, wherein the sensor is connected with the hub board 10.

[0036] In this embodiment, the hub board 10 is provided with a sensor, so that the black screen control device can automatically respond according to the external conditions detected by the sensor without manual intervention, intelligently enter the energy-saving mode, and significantly reduce the power consumption of the display screen in unnecessary cases.

[0037] It should be noted that according to the application scene of the black screen control device, the sensor can include various forms, such as ambient light sensor, temperature sensor, sound sensor, infrared sensor, etc., and can also integrate various types of sensors, such as light sensor, humidity sensor, vibration sensor, etc., and through multi-sensor data fusion, more complex and accurate environment perception and response can be realized.

[0038] As an optional embodiment, the hub board 10 further comprises an expansion interface.

[0039] In this embodiment, the expansion interface is arranged on the hub board 10, which can connect the interface of external devices or expansion boards, so that the black screen control device can add new functions such as network connection, environment perception, interactive control, etc., improving the adaptability and expansibility of the device.

[0040] It should be noted that the expansion interface usually has standardized signal definition and physical connection method, such as universal serial bus (USB interface), high-speed serial computer expansion bus interface (PCI Express interface), etc., allowing users to add or replace hardware components according to needs, and expanding the functions of the system.

[0041] As an optional embodiment, the hub board 10 further comprises a data storage chip.

[0042] In this embodiment, the data storage chip is arranged on the hub board 10, which can save configuration information, running log and other data of the black screen control device, ensuring that the black screen control device can quickly recover to the last working state when starting.

[0043] It should be noted that the data storage chip can take various forms, such as random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM) and flash memory chip, etc.

[0044] As an optional embodiment, the hub board 10 further comprises a field programmable gate array chip.

[0045] In this embodiment, the field programmable gate array chip (FPGA, Field-Programmable Gate Array) is arranged on the hub board 10, and the FPGA chip internally contains a large number of configurable logic modules (CLB) and programmable interconnection resources, which can be programmed on site according to user needs, realizing different logic functions and adding more functions to the black screen control device.

[0046] Based on the above embodiments and optional embodiments, an optional implementation is provided, which is described in detail as follows.

[0047] The black screen control device is provided in the optional implementation of the utility model.

[0048] Figure 2 This is a structural schematic diagram of a black screen control device according to an optional embodiment of the present invention, as shown below. Figure 2 As shown, the device includes a 3.8-5V conventional single-output switching power supply (same as the power supply described above), a receiver card (same as the predetermined receiver card described above), and a hub board. The hub board includes a lamp board interface, a 245 amplifier (same as the signal amplifier described above), and a metal-oxide-semiconductor field-effect transistor (N-MOS transistor, same as the field-effect transistor described above). The lamp board interface has a signal area (same as the signal circuit described above) and a power supply area (same as the power supply circuit described above).

[0049] The switching power supply has a first output terminal, a second output terminal, and a third output terminal. The first output terminal is connected to the receiver card, the second output terminal is connected to the HUB board, and the third output terminal is connected to the source pin of the N-MOS transistor. It is used to directly power the receiver card and also power the entire hub board.

[0050] The receiver card includes an output interface (P1), a first input interface (P2), and a second input interface (P3). P1 is connected to the input terminal of the 245 amplifier, P2 is connected to the signal area of ​​the HUB board, and P3 is connected to the power supply area of ​​the HUB board.

[0051] The receiver card signal is divided into three parts. The first part is amplified by a 245 amplifier and sent to the signal area of ​​the lamp board interface and to control the N-MOS switch. The second part is to collect the voltage of the power supply area of ​​the lamp board interface. If it exceeds the threshold, the receiver card processes the signal to control the N-MOS, so that it stops outputting power to the lamp board. The third part collects the continuity of the signal area and detects whether the lamp board is online. If it is not online, it feeds back the receiver card processing signal to control the N-MOS transistor, so that it stops outputting power to the lamp board.

[0052] The 245 amplifier in the HUB board has an input terminal, a first output terminal, and a second output terminal. The first output terminal is connected to the gate pin of the N-MOS transistor. The corresponding input terminal of the signal amplifier is used to connect to the receiving card to amplify the control signal sent by the receiving card. The second output terminal is used to connect to the signal area.

[0053] The N-MOS transistor in the HUB board has a source pin, a gate pin, and a drain pin. The source pin is used to connect to the switching power supply, the gate pin is used to connect to the receiver card to receive control signals from the receiver card and control the switching state of the N-MOS transistor, and the drain pin is used to connect to the input interface of the power supply area (same as the second interface mentioned above) to control the power supply state of the lamp board through the control power supply circuit.

[0054] Figure 3 This is a structural schematic diagram of the lamp board interface according to an optional embodiment of the present utility model. The lamp board interface is arranged as follows: Figure 3As shown, wherein the power port (VCC) and the ground port (GND) are the power area, the lamp panel input port (L1) and the lamp panel output port (L2) (same as the first interface described above) are the signal ports for detecting whether the lamp panel is online, and the remaining ports are the timing signal ports used for normally driving the lamp panel, which are not changed.

[0055] Wherein L1 and L2 are connected by a 0-ohm resistor, L1 is connected to the receiving card P1, and P1 continuously outputs a high level, L2 is connected to the receiving card P2, and the level is read.

[0056] If the lamp panel is connected, P2 reads a high level, indicating that the lamp panel is online, and the receiving card opens the output through the signal control tube (N-MOS tube).

[0057] If the lamp panel is not connected, P2 reads a default low level, indicating that the lamp panel is not online, and the receiving card interrupts the output through the signal control tube (N-MOS tube).

[0058] If the lamp panel is short-circuited, the current will increase, and according to Ohm's law, the voltage drop will also increase. When the supply area voltage is detected to decrease to a threshold value, the receiving card interrupts the output through the signal control N-MOS tube, avoiding continuous power supply during short circuit to cause the lamp panel to burn and catch fire.

[0059] If the playing content is black or the front end has no video source input, the receiving card receives similar signals, and the receiving card interrupts the output through the signal control N-MOS tube.

[0060] Through the above optional implementation, at least the following beneficial effects can be achieved:

[0061] (1) The device uses a field effect tube to control the power supply of the lamp panel, uses the on-off control of the field effect tube to open and close the power supply circuit of the hub, can realize the black screen energy saving of the lamp panel, and reduces the waste of power resources;

[0062] (2) The device uses a field effect tube to control the power supply of the lamp panel, without other additional devices, reducing the production cost of the device;

[0063] (3) The device checks the online situation and voltage situation of the lamp panel through the signal circuit, and when the lamp panel is offline or short-circuited, the supply area voltage is cut off in time to ensure the safety of the equipment.

[0064] Example 2

[0065] According to the embodiment of the utility model, a black screen control system of lamp panel is also provided, including any black screen control device above, lamp panel, wherein, signal circuit is arranged on the lamp panel, power supply circuit, the black screen control device is connected with the signal circuit arranged on the lamp panel through the first interface, the signal circuit is used for controlling the state of the lamp panel, the black screen control device is connected with the power supply circuit arranged on the lamp panel through the second interface, and the power supply circuit is used for power supply for the lamp panel.

[0066] The above embodiment serial numbers of the utility model are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0067] In the above embodiment of the utility model, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0068] In several embodiments provided in the present application, it should be understood that the disclosed technical content can be realized by other ways. Among them, the above-described device embodiments are only schematic, for example, the division of the unit can be a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between units or modules, which can be electrical or other forms.

[0069] The unit described as a separate component can be or can not be physically separated, and the component displayed as a unit can be or can not be a physical unit, that is, it can be located in one place, or it can be distributed to multiple units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0070] In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0071] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical scheme of the present application essentially or in other words the part that contributes to the prior art or the whole or part of the technical scheme can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute various embodiments of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk and various program code storage media.

[0072] The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A black screen control device of a light panel, characterized by, include: A hub board (10) is provided with a field-effect transistor (20) and a lamp board interface (30). The lamp board interface (30) includes a first interface and a second interface. The field-effect transistor (20) is connected to the corresponding connection line of the lamp board interface (30). The first interface is used to connect to a signal circuit set on the lamp board, the signal circuit being used to control the state of the lamp board. The second interface is used to connect to the power supply circuit provided on the lamp board, and the power supply circuit is used to supply power to the lamp board. The field-effect transistor (20) is provided with a source pin, a gate pin, and a drain pin. The source pin is used to connect to a predetermined power supply to power the black screen control device. The gate pin is used to connect to a predetermined receiving card to receive control signals sent by the predetermined receiving card and control the switching state of the field-effect transistor (20). The drain pin is used to connect to the input terminal corresponding to the power supply circuit, so as to control the power supply status of the lamp board by controlling the power supply circuit.

2. The black screen control device according to claim 1, characterized by The hub board (10) is also equipped with a signal amplifier, wherein, The signal amplifier is provided with an input terminal, a first output terminal, and a second output terminal. The first output terminal is connected to the gate pin. The input terminal of the signal amplifier is used to connect to the predetermined receiving card to amplify the control signal emitted by the predetermined receiving card. The gate pin is used to connect to the predetermined receiver card via the signal amplifier. The second output terminal is used to connect to the signal circuit; The input terminal of the signal circuit is used to connect to the predetermined receiving card through the signal amplifier.

3. The black screen control device according to claim 1, wherein The black screen control device also includes: Pre-order receiving card, among which, The gate pin of the field-effect transistor (20) is connected to the predetermined receiving card to receive the control signal sent by the predetermined receiving card and control the switching state of the field-effect transistor (20). The input terminal of the signal circuit is used to connect to the predetermined receiving card; The output terminal of the signal circuit is used to connect to the predetermined receiving card; The output terminal of the power supply circuit is used to connect to the predetermined receiving card.

4. The black screen control device according to claim 1, wherein The black screen control device further includes: a predetermined power supply, wherein... The source pin of the field-effect transistor (20) is connected to the predetermined power supply to power the black screen control device.

5. The black screen control device of claim 1, wherein The hub (10) is also provided with a security chip, wherein the security chip is connected to the field-effect transistor (20).

6. The black screen control apparatus of claim 1, wherein The black screen control device further includes a sensor, wherein the sensor is connected to the hub (10).

7. The black screen control apparatus of claim 1, wherein The hub (10) also includes an expansion interface.

8. The black screen control apparatus of claim 1, wherein The hub board (10) is also equipped with a data storage chip.

9. The black screen control apparatus of claim 1, wherein The hub board (10) is also equipped with a field-programmable gate array chip.

10. A black screen control system for a light panel, characterized by Includes the black screen control device and lamp board as described in claim 1, wherein the lamp board is provided with a signal circuit and a power supply circuit. The black screen control device is connected to the signal circuit on the lamp board via a first interface. The signal circuit is used to control the state of the lamp board. The black screen control device is connected with the power supply circuit arranged on the lamp panel through a second interface, and the power supply circuit is used for supplying power for the lamp panel.

Images