CN213184662U - Power supply circuit of LED display screen and electronic equipment - Google Patents
Power supply circuit of LED display screen and electronic equipment Download PDFInfo
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- CN213184662U CN213184662U CN202021662919.4U CN202021662919U CN213184662U CN 213184662 U CN213184662 U CN 213184662U CN 202021662919 U CN202021662919 U CN 202021662919U CN 213184662 U CN213184662 U CN 213184662U
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Abstract
The utility model relates to a power supply circuit and electronic equipment of LED display screen. The utility model discloses a power supply circuit of an LED display screen, which comprises a receiving card and an LED drive board; the receiving card is provided with a first electric connector, a receiving card chip and a power input interface, and the LED driving board is provided with a second electric connector; the first electric connector comprises a plurality of first power terminals and a plurality of first signal terminals, the plurality of first power terminals are connected with the power input interface, and the plurality of first signal terminals are connected with the receiving card chip; the second electrical connector comprises a plurality of second power terminals and a plurality of second signal terminals corresponding to the first electrical connector, and the plurality of second power terminals are connected with the power circuit on the LED driving board. The utility model discloses a power supply circuit of LED display screen need not set up the power supply circuit by power module to LED drive plate alone, simultaneously, through a plurality of signal terminal transmission power signal, need not lay the power cord in big line footpath, has still improved the heat dissipation of power kneck simultaneously.
Description
Technical Field
The utility model relates to a technical field of LED display screen especially relates to a power supply circuit and electronic equipment of LED display screen.
Background
In recent years, LEDs (Light Emitting diodes) are widely used as a green and energy-saving Light source in lighting systems and in the field of home appliances for backlight display of display devices.
In a conventional power supply circuit of an LED display screen, as shown in fig. 1, a power interface and a signal interface are arranged on an LED driving board, the power interface is connected with a power module, and the signal interface is connected with a receiving card. The power supply mode has the defects that as a single power supply line of the power interface needs to meet larger current, the heat dissipation of the power interface is poor, and a power line meeting the wire diameter of the larger current is difficult to arrange on the LED drive board, so that the process procedure is increased if the power line is additionally welded.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a supply circuit and electronic equipment of LED display screen does not need to set up alone by the supply circuit of power module to LED drive plate, simultaneously, through a plurality of signal terminal transmission power signal, need not lay the power cord in big line footpath, has still improved the heat dissipation of power kneck.
In a first aspect, the utility model provides a power supply circuit of an LED display screen, which comprises a receiving card and an LED drive board;
the receiving card is provided with a first electric connector, a receiving card chip and a power input interface, the LED driving board is provided with a second electric connector, and the first electric connector is used for being connected with the second electric connector through a butting connector;
the first electric connector comprises a plurality of first power terminals and a plurality of first signal terminals, the plurality of first power terminals are connected with the power input interface, and the plurality of first signal terminals are connected with the receiving card chip;
the second electrical connector comprises a plurality of second power terminals and a plurality of second signal terminals corresponding to the first electrical connector, the plurality of second power terminals are connected with the power circuit on the LED driving board, and the plurality of second signal terminals are connected with the signal circuit on the LED driving board.
Optionally, the LED driver board includes a first power supply area and a second power supply area, the power supply lines on the LED driver board include a plurality of first power supply lines for supplying power to the first power supply area, and a plurality of second power supply lines for supplying power to the second power supply area, and each of the first power supply lines and each of the second power supply lines are respectively connected to the corresponding second power terminal.
Optionally, the first power supply area is located at an upper portion of the LED driving board, the second power supply area is located at a lower portion of the LED driving board, and the second electrical connector is disposed between the first power supply area and the second power supply area.
Optionally, the second power terminal connected to the first power line is disposed at an upper end of the second electrical connector, and the second power terminal connected to the second power line is disposed at a lower end of the second electrical connector.
Optionally, a third electrical connector for forming a standby relationship with the second electrical connector is further disposed on the LED driving board;
each of the first power supply lines and each of the second power supply lines are also connected with a corresponding power supply terminal in the third electrical connector, respectively.
Optionally, the first electrical connector includes a plurality of first power terminals disposed at an upper end and a plurality of first power terminals disposed at a lower end corresponding to the second electrical connector;
the first power terminals arranged at the upper end are connected with the power input interface through a third power circuit, and the first power terminals arranged at the lower end are connected with the power input interface through a fourth power circuit.
Optionally, the first electrical connector and the second electrical connector are euro-style sockets.
Optionally, the power supply device further comprises a power supply module, and a power supply output end of the power supply module is connected with the power supply input end.
Optionally, the power module and the receiving card are integrated on the same PCB.
In a second aspect, the present invention provides an electronic device, including as the first aspect of the present invention the power supply circuit of the LED display screen.
In the embodiment of the present invention, by disposing the first electrical connector on the receiving card, and disposing the plurality of first power terminals connected to the power source and the plurality of first signal terminals connected to the receiving card on the first electrical connector, and disposing the second electrical connector on the LED driving board, and disposing the second power terminal corresponding to the first power terminal and the first signal terminal corresponding to the first signal terminal on the second electrical connector, when the first electrical connector and the second electrical connector are connected by the butting connector, the power source, the display signal and the control signal can be transmitted together from the receiving card to the LED driving board through the first electrical connector and the second electrical connector, without separately disposing a power supply circuit from the power module to the LED, and at the same time, transmitting the power source signal through the plurality of signal terminals, without laying a power line with a large wire diameter, heat dissipation at the power interface is also improved.
For better understanding and implementation, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a circuit configuration of a power supply circuit of an LED display screen according to an example of the prior art;
fig. 2 is a schematic circuit diagram of a power supply circuit of an LED display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a power circuit layout structure of an LED driving board according to an embodiment of the present invention;
fig. 4 is a schematic diagram of power and signal terminals of a second electrical connector according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a power circuit layout structure of an LED driving board according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a power circuit layout structure of a receiving card according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In the following, several specific embodiments are given for describing the technical solution of the present application in detail. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
In the example of fig. 1, the power module is configured to convert an ac power into a dc power and then respectively supply power to the receiving card and the LED driver boards, the receiving card is provided with a receiving card chip, at least one adapting pin header, a network input interface, and a network output interface, where the receiving card chip is configured to send a display signal and a control signal received from the network input interface to each LED driver board of the display screen through the adapting pin header, and when there are a plurality of adapting pin headers, the receiving card chip may send the display signal and the control signal to different LED driver boards through different adapting pin headers.
However, because a single power supply line of the power interface of the LED driving board needs to satisfy a large current, heat dissipation at the power interface is poor, and it is difficult to arrange a power line satisfying a large current path on the LED driving board, which may increase a process if the power line is additionally welded.
To solve the technical problem, the utility model provides a power supply circuit of LED display screen, as shown in FIG. 2, in an embodiment, the power supply circuit of LED display screen includes receiving card 1 and LED drive plate 2.
The receiving card 1 is provided with a first electric connector 11, a receiving card chip 12, a power input interface 13, a network input interface 14 and a network output interface 15, wherein the power input interface 13 is used for being connected with the power output interface of the power module, the network input interface 14 and the network output interface 15 are respectively used for receiving and sending display signals and control signals, and the receiving card chip is connected with the network input interface 14 and used for receiving the display signals and the control signals.
In other examples, the number of the LED driving boards 2 may be plural, and the number of the first electrical connectors 11 may be plural corresponding to the number of the LED driving boards 2.
The first electrical connector 11 includes a plurality of first power terminals connected to the power input interface and a plurality of first signal terminals connected to the card receiving chip 12.
Each of the LED driving boards 2 is provided with a second electrical connector 21 corresponding to the first electrical connector 11, and each of the first electrical connectors 11 is configured to be connected to one of the second electrical connectors 21 through a docking connector. In the embodiment of the present invention, the first electrical connector 11 and the second electrical connector 21 may be a conventional connecting device including a plurality of pins, such as a pin header or a socket, in a preferred example, the first electrical connector 11 and the second electrical connector 21 are european sockets and are respectively soldered on the receiving card 1 and the LED driving board 2, and when the first electrical connector 11 and the second electrical connector 21 are european sockets, the butting connector is a connecting cable with european plugs at both ends.
The second electrical connector 21 includes a plurality of second power terminals corresponding to the first electrical connector 11 and a plurality of second signal terminals, the plurality of second power terminals are connected to the power lines on the LED driving board, and the plurality of second signal terminals are connected to the signal lines on the LED driving board.
In an embodiment, the layout of the second power terminals and the second signal terminals in the second electrical connector 21 is the same as the layout of the first power terminals and the first signal terminals in the first electrical connector 11.
The embodiment of the utility model provides a theory of operation does:
when the first electrical connector 11 and the second electrical connector 21 are connected through a butting connector, the power input terminal 13 on the receiving card 1, the first power terminal on the first electrical connector 11, the butting connector, and the second power terminal on the second electrical connector 21 form a power transmission channel, the power in the power module is sent to the LED driver board 2 in a multiplexing manner through the plurality of power terminals, and the power is supplied to the driver IC, the control chip, and the like on the LED driver board 2 through the power line on the LED driver board 2. Meanwhile, the receiving card chip 12, the first signal terminal on the first electrical connector 11, the butting connector and the second signal terminal on the second electrical connector 21 form a signal transmission channel, and the receiving card transmits the display signal and the control signal to the LED driving board 2 through the signal transmission channel.
In the embodiment of the present invention, by disposing the first electrical connector on the receiving card, and disposing the plurality of first power terminals connected to the power source and the plurality of first signal terminals connected to the receiving card on the first electrical connector, and disposing the second electrical connector on the LED driving board, and disposing the second power terminal corresponding to the first power terminal and the first signal terminal corresponding to the first signal terminal on the second electrical connector, when the first electrical connector and the second electrical connector are connected by the butting connector, the power source, the display signal and the control signal can be transmitted together from the receiving card to the LED driving board through the first electrical connector and the second electrical connector, without separately disposing a power supply circuit from the power module to the LED, and at the same time, transmitting the power source signal through the plurality of signal terminals, without laying a power line with a large wire diameter, heat dissipation at the power interface is also improved.
The utility model discloses LED display screen's supply circuit still divides the regional power supply for the components and parts on the LED drive plate 2 through the second power supply terminal of difference to make the power supply circuit layout on the LED drive plate 2 more reasonable. As shown in fig. 3, in an embodiment, the LED driving board 2 is divided to include a first power supply region a and a second power supply region b, the power lines on the LED driving board 2 include a plurality of first power lines a1 for supplying power to the first power supply region, and a plurality of second power lines b1 for supplying power to the second power supply region, wherein each of the first power lines a1 and each of the second power lines b1 are respectively connected to the corresponding second power terminals.
In a specific example, the different power supply regions are further divided into a plurality of power supply branches according to the number of the second power supply terminals, and each second power supply terminal and the corresponding power supply line form one power supply branch.
In a specific example, for better layout of power supply lines, as shown in fig. 3, the first power supply region a is located at an upper portion of the LED driving board 2, the second power supply region b is located at a lower portion of the LED driving board, and the second electrical connector 21 is disposed between the first power supply region a and the second power supply region b. Preferably, as shown in fig. 3, the second power terminal connected to the first power line a1 is provided at an upper end of the second electrical connector 21, and the second power terminal connected to the second power line b1 is provided at a lower end of the second electrical connector 21.
Fig. 4 is a schematic diagram of power terminals and signal terminals of the second electrical connector 21 in an example, in fig. 4, the power terminals are respectively disposed at the upper end and the lower end of the second electrical connector 21, and in the signal terminals of the second electrical connector, SPI terminals for storing signals, TXD, LAT, and EN terminals for timing control, R1, G1, and B1 terminals for displaying signals, and SCAN terminals for scanning signals are respectively included, in which, in the embodiment of the present invention, the number of the power terminals is not limited.
In order to facilitate the connection between the first electrical connector 11 and the second electrical connector 21, as shown in fig. 5, in an embodiment, a third electrical connector 22 for forming a mutual standby relationship with the second electrical connector 21 is further disposed on the LED driving board 2; the third electrical connector 22 and the second electrical connector 21 have the same structure and terminal layout, and each of the first power supply lines and each of the second power supply lines are also connected to corresponding power supply terminals in the third electrical connector, respectively. When mounting, it is only necessary to connect the first electrical connector to the second electrical connector 21 or the third electrical connector 22, which are located at a short distance.
In one embodiment, as shown in fig. 6, the first electrical connector 11 includes a plurality of first power terminals disposed at an upper end and a plurality of first power terminals disposed at a lower end corresponding to the second electrical connector;
the plurality of first power terminals arranged at the upper end are connected with the power input interface 13 through a third power line c1, and the plurality of first power terminals arranged at the lower end are connected with the power input interface 13 through a fourth power line d1, so that a power line with a large current wire diameter does not need to be arranged between the power input interface and the first power terminals, and the heat dissipation of the receiving card is improved.
In other examples, the connection between the power input interface 13 and the first power terminal may also be implemented by more power lines.
In an embodiment, the power supply circuit of the LED display screen further includes a power supply module, and a power supply output terminal of the power supply module is connected to the power supply input terminal. Preferably, the power module and the receiving card are integrated on the same PCB.
Fig. 7 is a schematic structural diagram of an electronic device according to the present invention, which includes a power supply circuit of the LED display screen according to any of the embodiments described above.
In one embodiment, the electronic device is an LED display screen.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A power supply circuit of an LED display screen is characterized by comprising a receiving card and an LED driving board;
the receiving card is provided with a first electric connector, a receiving card chip and a power input interface, the LED driving board is provided with a second electric connector, and the first electric connector is used for being connected with the second electric connector through a butting connector;
the first electric connector comprises a plurality of first power terminals and a plurality of first signal terminals, the plurality of first power terminals are connected with the power input interface, and the plurality of first signal terminals are connected with the receiving card chip;
the second electrical connector comprises a plurality of second power terminals and a plurality of second signal terminals corresponding to the first electrical connector, the plurality of second power terminals are connected with the power circuit on the LED driving board, and the plurality of second signal terminals are connected with the signal circuit on the LED driving board.
2. The power supply circuit of the LED display screen according to claim 1, wherein:
the LED driving board comprises a first power supply area and a second power supply area, the power supply circuit on the LED driving board comprises a plurality of first power supply circuits used for supplying power for the first power supply area and a plurality of second power supply circuits used for supplying power for the second power supply area, and each first power supply circuit and each second power supply circuit are respectively connected with the corresponding second power supply terminal.
3. The power supply circuit of the LED display screen according to claim 2, wherein:
the first power supply area is located at the upper part of the LED driving board, the second power supply area is located at the lower part of the LED driving board, and the second electrical connector is arranged between the first power supply area and the second power supply area.
4. The power supply circuit of the LED display screen of claim 3, wherein:
the second power terminal connected with the first power line is arranged at the upper end of the second electric connector, and the second power terminal connected with the second power line is arranged at the lower end of the second electric connector.
5. The power supply circuit of the LED display screen according to any one of claims 2 to 4, wherein:
the LED driving board is also provided with a third electric connector which is used for forming a mutual standby relation with the second electric connector;
each of the first power supply lines and each of the second power supply lines are also connected with a corresponding power supply terminal in the third electrical connector, respectively.
6. The power supply circuit of the LED display screen of claim 4, wherein:
the first electrical connector comprises a plurality of first power terminals arranged at the upper end and a plurality of first power terminals arranged at the lower end corresponding to the second electrical connector;
the first power terminals arranged at the upper end are connected with the power input interface through a third power circuit, and the first power terminals arranged at the lower end are connected with the power input interface through a fourth power circuit.
7. The power supply circuit of the LED display screen according to claim 1, wherein:
the first electrical connector and the second electrical connector are Euro style sockets.
8. The power supply circuit of the LED display screen according to claim 1, wherein:
the power supply device further comprises a power supply module, and a power supply output end of the power supply module is connected with the power supply input end.
9. The power supply circuit of the LED display screen of claim 8, wherein:
the power module and the receiving card are integrated on the same PCB.
10. An electronic device, characterized in that:
power supply circuit comprising a LED display screen as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021662919.4U CN213184662U (en) | 2020-08-11 | 2020-08-11 | Power supply circuit of LED display screen and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021662919.4U CN213184662U (en) | 2020-08-11 | 2020-08-11 | Power supply circuit of LED display screen and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213184662U true CN213184662U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021662919.4U Active CN213184662U (en) | 2020-08-11 | 2020-08-11 | Power supply circuit of LED display screen and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213184662U (en) |
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2020
- 2020-08-11 CN CN202021662919.4U patent/CN213184662U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220701 Address after: 710086 floor 12, northwest regional headquarters of Shiyuan Co., Ltd., north of Fengdong 2nd Road and east of FengHao Avenue, Fengdong new town, Chang'an District, Xi'an City, Shaanxi Province Patentee after: QSTECH Co.,Ltd. Address before: 510530 No. 6, Yun Po four road, Whampoa District, Guangzhou, Guangdong. Patentee before: GUANGZHOU SHIYUAN ELECTRONICS Co.,Ltd. Patentee before: Xi'an Qingsong Photoelectric Technology Co., Ltd |
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| TR01 | Transfer of patent right |