CN117411161A - LED display screen power supply system and LED display screen - Google Patents

LED display screen power supply system and LED display screen Download PDF

Info

Publication number
CN117411161A
CN117411161A CN202311327891.7A CN202311327891A CN117411161A CN 117411161 A CN117411161 A CN 117411161A CN 202311327891 A CN202311327891 A CN 202311327891A CN 117411161 A CN117411161 A CN 117411161A
Authority
CN
China
Prior art keywords
direct current
power supply
led display
group
interface end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311327891.7A
Other languages
Chinese (zh)
Inventor
陈亚卓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Jijian Design Co ltd
Original Assignee
Shenzhen Jijian Design Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Jijian Design Co ltd filed Critical Shenzhen Jijian Design Co ltd
Priority to CN202311327891.7A priority Critical patent/CN117411161A/en
Publication of CN117411161A publication Critical patent/CN117411161A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H02B1/565—Cooling; Ventilation for cabinets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B15/00—Supervisory desks or panels for centralised control or display
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads

Abstract

The invention relates to the technical field of LED display screens, in particular to an LED display screen power supply system and an LED display screen, comprising a plurality of power supply groups, wherein each power supply group comprises 1 alternating current line, 1 direct current line and a plurality of boxes; the box body comprises a main circuit board and a display module electrically connected with the main circuit board, and an alternating current interface end and a direct current interface end are arranged on the main circuit board; the alternating current interface end of each box body is electrically connected with the alternating current bus of the group of alternating current lines in parallel; the direct current interface end of each box body is directly connected in series with the direct current interface ends of two adjacent box bodies in the group through the direct current wires of the direct current circuits of the group; and/or the direct current interface end of each box body is electrically connected with the direct current bus of the group of direct current lines in parallel. The box has the beneficial effects that the box bodies are connected with each other through the interconnection and connection backup function, and the box has economy, simplicity and high reliability.

Description

LED display screen power supply system and LED display screen
Technical Field
The invention relates to the technical field of LED display screens, in particular to an LED display screen power supply system and an LED display screen.
Background
The LED display screen has the advantages of wide color gamut, high brightness, large visual angle, low power consumption, long service life and the like, and is widely applied to the fields of commercial media, cultural performance, stadiums, information transmission and the like.
In the prior art, an LED display screen is formed by splicing a plurality of display modules, for example, four display modules are spliced into an LED display screen in two rows and two columns. When the spliced LED display screen works normally, voltage is required to be provided for each display module to enable the LED display screen to work normally, one complete LED display screen is provided with one or more external power supply lines and 220V alternating current according to the power requirement of the complete LED display screen, the one or more external power supply lines are respectively and electrically connected with one or more display modules, and then all display modules in the LED display screen are sequentially connected with the one or more display modules in series through internal wires.
However, when the serial connection mode is adopted to supply power to each display module, if a power supply circuit of one display module in the serial connection circuit fails, other modules connected in series afterwards cannot obtain power supply, so that the whole LED display screen cannot work normally, and display failure occurs. Although some LED display screens adopt circuits which are connected in series and parallel so as not to influence the power supply of other display modules when a certain display module fails, the circuit can ensure the power supply of other display modules as much as possible while avoiding the failure of one display module, but the display modules with the power failure still cannot be normally displayed, so that the LED display screen is incomplete in display and has display failure.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned drawbacks and shortcomings of the prior art, the present invention provides an LED display power supply system and an LED display, which solve the technical problem that when a power supply circuit of an individual display module fails in the prior art, the whole LED display fails.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
in a first aspect, an embodiment of the present invention provides an LED display power supply system, including a plurality of power supply groups, each power supply group including 1 ac line, 1 dc line, and a plurality of boxes;
the alternating current circuit is provided with an alternating current bus in parallel connection, and the direct current circuit is provided with a direct current line direct connection in series connection and/or a direct current bus in parallel connection;
the box body comprises a main circuit board and a display module electrically connected with the main circuit board, wherein an alternating current interface end and at least one direct current interface end are arranged on the main circuit board;
the alternating current interface end of each box body is electrically connected with the alternating current bus of the box body in parallel;
the direct current interface end of each box body is directly connected in series with the direct current interface ends of two adjacent box bodies in the group through the direct current wires of the group; and/or
The direct current interface end of each box body is electrically connected with the direct current buses of the box body in parallel.
Optionally, the ac interface end of each box is further electrically connected in parallel with at least one ac bus of another group;
when the direct current interface end of each box body is electrically connected with the direct current buses of the group of direct current lines in parallel, the direct current interface end of each box body is also electrically connected with the direct current buses of at least one other group in parallel.
Optionally, the main circuit board comprises a control and power supply integrated circuit, the control and power supply integrated circuit is provided with a power supply circuit and an integrated control circuit, and the integrated control circuit is electrically connected with the power supply circuit and is in communication connection with the display module;
the alternating current interface end and the direct current interface end are respectively and electrically connected with the power circuit;
the first network cable connector and the second network cable connector of the control and power supply integrated circuit are in communication connection with the integrated control circuit.
Optionally, a first connector is further arranged on the total circuit board, and the first connector is electrically connected with the power supply circuit and the integrated control circuit;
the display module is provided with a second connector, and the second connector is connected with the first connector in a plugging mode, so that the display module is electrically connected with the power circuit and connected with the integrated control circuit through signals.
Optionally, the box body is further provided with a first multi-power line connector and a second multi-power line connector;
the first multi-power-line connector is electrically connected with the alternating current interface end of the box body and is used for electrically connecting the alternating current buses of the first group in parallel and/or connecting at least one alternating current bus of the second group in parallel;
the second multi-power-line connector is electrically connected with the direct current interface end of the box body and is used for electrically connecting the direct current buses of the group in parallel and/or connecting the direct current buses of the at least one other group in parallel.
Optionally, the first network cable connector is in communication connection with a second network cable connector of an adjacent box;
the second net wire connector is in communication connection with the first net wire connector of another adjacent box body.
Optionally, the direct current bus parallel connection and direct current line direct connection series connection adopt 3-core direct current lines, which comprise positive electrode lines, negative electrode lines and ground lines;
the alternating current bus is connected in parallel by adopting a 3-core alternating current line, which comprises a live wire, a zero wire and a ground wire.
Optionally, a plurality of boxes in each power supply group are arranged in a row, and the power supply groups are orderly arranged in sequence, so that the plurality of boxes of the LED display screen form a display matrix.
Optionally, the box body is provided with a heat dissipation shell, the back of the area corresponding to the power circuit on the total circuit board is attached to the heat dissipation shell, and the front of the area is provided with an insulating cover plate.
In a second aspect, an embodiment of the present invention provides an LED display screen, including the LED display screen power supply system according to the first aspect.
(III) beneficial effects
The beneficial effects of the invention are as follows:
1. the power supply group comprises 1 alternating current line and 1 direct current line, and the direct current lines are all kept with adjacent interconnected direct current power supply no matter the alternating current line or the power supply circuit fails;
2. the alternating current interface end of one box body is simultaneously connected with two alternating current buses in parallel and at least one other box body power supply circuit is electrically connected, so that when any one or more alternating current buses in the power supply system are connected in parallel to fail, the box body is not affected; in addition, the display module of each box body is electrically connected with the direct current interface end of the box body and the direct current interface end of at least one other box body, so that even if the power supply circuit of the box body and/or any one or more alternating current buses are connected in parallel to fail, the display module of the box body can obtain power supply from the power supply circuits of the other box bodies and work normally, thereby ensuring the normal work of the LED display screen to the greatest extent and avoiding display failure;
3. each box body is provided with two network cable connectors which are connected with the adjacent upper and lower or left and right box bodies, so that the signal head and tail cascading is realized, and the signal can be kept to be supplied to a normal control circuit no matter which signal network cable line fails;
4. the box body is provided with a heat dissipation shell, and the back of the area of the main circuit board corresponding to the power circuit is attached to the heat dissipation shell, so that the heat dissipation shell has a heat dissipation function;
5. the control and power supply integrated circuit is adopted, the high-cost superposition of the current general dual-module power supply and the complexity of the circuit are solved, the interconnection and connection backup function between adjacent unit board cards can be realized, and the integrated circuit is economical, simple and highly reliable.
Drawings
FIG. 1 is a schematic diagram of a power supply system for an LED display screen in some possible implementations of embodiment 1 of the invention;
FIG. 2 is a schematic diagram of a power supply system for an LED display screen in other possible embodiments of embodiment 1;
FIG. 3 is a schematic diagram of a power supply system for an LED display screen in other possible embodiments of embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of a power supply system for an LED display screen in other possible embodiments of embodiment 1 of the present invention;
fig. 5 is a schematic diagram of a power supply system for an LED display screen in another possible embodiment of the invention according to embodiment 1.
[ reference numerals description ]
10, connecting an alternating current bus in parallel; 20, connecting direct current buses in parallel; 21, direct current wires are connected in series; 30, a box body; 31, a total circuit board; 32, a display module; 33, a power supply circuit; 331, an ac interface end; 332, dc interface end; 333, a first connector; 341, a first multi-wire connector; 342, a second multi-wire connector; 35, an integrated control circuit; 351, a first wire connector; 352, a second wire connector; 36, control and integrated circuits.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
The LED display screen of the LED display screen power supply system provided by the embodiment of the invention comprises a plurality of power supply groups, wherein each power supply group comprises 1 alternating current line, 1 direct current line and a plurality of boxes; the alternating current circuit is provided with an alternating current bus in parallel connection, and the direct current circuit is provided with a direct current line direct connection in series connection and/or a direct current bus in parallel connection; the box body comprises a main circuit board and a display module electrically connected with the main circuit board, and an alternating current interface end and a direct current interface end are arranged on the main circuit board; the alternating current interface end of each box body is electrically connected with the alternating current bus of the group of alternating current lines in parallel; the direct current interface end of each box body is directly connected in series with the direct current interface ends of two adjacent box bodies in the group through the direct current wires of the direct current circuits of the group; and/or the direct current interface end of each box body is electrically connected with the direct current bus of the group of direct current lines in parallel. Therefore, when any AC bus in parallel connection in the power supply system and the power supply circuit are in fault respectively or simultaneously, each display module can still display normally, normal operation of the LED display screen is ensured, and display faults are avoided.
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Description of the preferred embodiments section
Example 1:
the present embodiment provides a power supply system for an LED display screen, please refer to fig. 1, which includes at least two power supply groups, each of which includes 1 ac circuit, one dc circuit and a plurality of boxes 30.
The ac line is provided with an ac bus parallel 10, the dc line is provided with a dc line straight-through series 21 and/or a dc bus parallel 20.
The case 30 includes a main circuit board 31 and a display module 32 electrically connected to the main circuit board 31. At least one ac interface 331 and a dc interface 332 are disposed on the bus board 31.
In some possible solutions, please continue to refer to fig. 1 and fig. 2, in the LED display screen power supply system, each two sets of power supply groups may be associated with each other, where the ac interface end 331 of each box 30 is electrically connected to the ac bus parallel 10 of the ac line of the set, the ac interface end 331 of the next box 30 of the set, and the ac bus parallel 10 of the other set; the dc interface terminals 332 are electrically connected in parallel 20 with the dc bus of the dc circuit of the group, the dc interface terminals 332 of the next box 30 of the group, and the dc bus of the other group. In the drawing, a broken line represents an ac part, and a solid line represents a dc part.
In this embodiment, the present group refers to a power supply group where the box 30 is located, and another group, the previous group, or the next group refers to other power supply groups adjacent to or not adjacent to the present group.
In practical application, please continue to refer to fig. 3, each power supply group may be sequentially associated, where the ac interface end 331 of each box 30 of the LED display screen is electrically connected with the ac bus parallel 10 of the ac line of the group, the ac interface end 331 of the next box 30 of the group, and the ac buses parallel 10 of the ac lines of the previous group and the next group; the dc interface terminals 332 are electrically connected in parallel with the dc bus 20 of the dc line of the present group, the dc interface terminals 332 of the next box 30 of the present group, and the dc bus 20 of the dc lines of the previous and next groups.
In practical applications, please continue to refer to fig. 4 and fig. 5, the power supply groups may be independent of each other.
As shown in fig. 4, the ac interface end 331 of each box 30 is electrically connected in parallel with the ac bus of the ac line of the present group 10; and, each box 30 is provided with two dc interface ends 332, which are respectively connected in series with the dc interface ends 332 of two adjacent boxes 30 in the set through the dc line direct connection 21 of the dc line of the set.
As shown in fig. 5, the ac interface end 331 of each box 30 is electrically connected in parallel with the ac bus of the ac line of the present group 10; and, each box 30 is provided with two dc interface terminals 332, and the two dc interface terminals 332 are respectively connected in series with the dc interface terminals 332 of two adjacent boxes 30 in the set through the dc lines of the set of dc lines in series 21, and are also electrically connected in parallel 20 with the dc buses of the set of tributary lines.
In this embodiment, the ac interface 331 of one box 30 is electrically connected to at least two ac buses in parallel 10 at the same time, so that even if 1 or more ac buses fail in parallel 10, no influence is exerted on the box 30; in addition, the display module 32 of each box is electrically connected to the direct current interface end 332 of the box and the direct current interface ends 332 of the plurality of other boxes 30, so when the power circuit 33 of the box 10 and/or the current bus in the power supply system fail, the display module 32 can obtain power from the power circuits 33 of the other boxes 30 and work normally; even if the power supply circuits of the adjacent boxes 30 fail, the display modules 32 of the boxes 30 can be ensured to display normally as long as the power supply circuits 33 which can work normally are arranged in the LED display screen, so that the normal work of the LED display screen is ensured to the greatest extent possible, and the display failure is avoided.
In some possible solutions, referring to fig. 1 to 3, the overall circuit board 31 includes a control and power integrated circuit 36, the control and power integrated circuit 36 is further provided with a power circuit 33 and an integrated control circuit 35, and the integrated control circuit 35 is electrically connected to an output terminal of the power circuit and is communicatively connected to the display module.
In practical applications, the power circuit 33 may be configured with a dc circuit and an ac circuit, and the input end of the dc circuit is electrically connected to the dc interface end 332, and the input end of the ac circuit is electrically connected to the ac interface end 331. The direct current circuit and the alternating current circuit can provide working voltage for the display module, the direct current circuit can be used as a backup circuit, and no matter an alternating current circuit or a power supply circuit fails, the direct current circuit is kept with direct current power supply of adjacent interconnection.
In practical applications, the power supply circuit 33 may include an input power connector, a power switch, a rectifying circuit, a switching power supply, a constant current power supply, a power supply protection device, a heat dissipation device, and the like. In practical applications, the functions of these devices or circuits may be implemented by transformer coils, various capacitors, inductors, and resistors, and power circuit chips.
In practical application, the control and power supply integrated circuit 36 is further provided with a first network cable connector 351 and a second network cable connector 352; the first wire connector 351 is communicatively coupled to the second wire connector 352 of an adjacent tank 30 in the present or a previous group;
the second wire connector 352 is communicatively coupled to the first wire connector 351 of an adjacent tank 30 in the present or next group.
Two net wire connectors are arranged in each box body 30, and can be respectively connected with two adjacent box bodies 30 to acquire control signals so as to realize display control of the display module 32.
In practical applications, the integrated control circuit 35 may include a control circuit chip, a control circuit, and a communication network cable.
In some possible solutions, referring to fig. 1 to 5, a plurality of first connectors 33 may be further disposed on the total circuit board 31 of each box 30, where each connector 33 corresponds to one display module 32. The first connector 333 is electrically connected to the output of the power supply circuit 33 and the integrated control circuit 35.
The display module 32 is provided with a second connector, and the second connector is connected with the first connector 333 in a plugging manner, so as to realize the electrical connection between the display module 32 and the output end of the power circuit 33 and the communication connection between the display module and the integrated control circuit 35.
In some possible implementations, referring to fig. 1, 2, 3 and 5, the box 30 is further provided with a first multi-wire connector 341 and a second multi-wire connector 342 at the ac interface end 331 and the dc interface end 332, respectively. The first multi-wire connector 341 is electrically connected to the ac interface end 331 of the box 30 for electrically connecting the ac bus parallel 10 of the present group and/or at least one ac bus parallel 10 of another group. A second multi-wire connector 342 is electrically connected to the dc interface end 332 of the housing 30 for electrically connecting the dc bus parallel 20 of the present set and/or the dc bus parallel 20 of the at least one other set. Alternatively, the second multi-wire connector 342 is electrically connected to the dc interface end 332 of the housing 30 for electrically connecting the dc lines of the present set through the series 21.
In practical applications, the first multi-wire connector 341 and the second wire connector 342 may be selected according to needs, for example, a 4-wire connector is selected in the power supply system of fig. 1 and 2, and a 4-wire connector and a 5-wire connector are selected in the power supply system of fig. 3.
In some possible solutions, the case 30 is provided with a heat dissipation casing, on which the back of the area of the main circuit board 31 corresponding to the power circuit 33 is mounted, and the front of this area is provided with an insulating cover plate.
In some possible solutions, please continue to refer to fig. 1 to 5, the plurality of boxes 30 in each power supply group are arranged in a row, and the plurality of power supply groups are orderly arranged in sequence, so that the plurality of boxes 30 of the LED display screen form a display matrix.
Example 2:
on the basis of the foregoing embodiment 1, this embodiment 2 provides an LED display screen, which includes the LED display screen power supply system as described in embodiment 1.
The LED display screen power supply system and the LED display screen have the following advantages:
1. the power supply group comprises 1 alternating current line and 1 direct current line, and the direct current lines are all kept with adjacent interconnected direct current power supply no matter the alternating current line or the power supply circuit fails;
2. the alternating current interface end of one box body is simultaneously connected with two alternating current buses in parallel and at least one other box body power supply circuit is electrically connected, so that when any one or more alternating current buses in the power supply system are connected in parallel to fail, the box body is not affected; in addition, the display module of each box body is electrically connected with the direct current interface end of the box body and the direct current interface end of at least one other box body, so that even if the power supply circuit of the box body and/or any one or more alternating current buses are connected in parallel to fail, the display module of the box body can obtain power supply from the power supply circuits of the other box bodies and work normally, thereby ensuring the normal work of the LED display screen to the greatest extent and avoiding display failure;
3. each box body is provided with two network cable connectors which are connected with adjacent upper and lower or left and right box bodies, so that the head and tail cascading of signals is realized, and the normal signal supply can be kept no matter which signal network cable line fails, thereby controlling a circuit;
4. the box body is provided with a heat dissipation shell, and the back of the area of the main circuit board corresponding to the power circuit is attached to the heat dissipation shell, so that the heat dissipation shell has a heat dissipation function;
5. the control and power supply integrated circuit is adopted, the high-cost superposition of the current general dual-module power supply and the complexity of the circuit are solved, the interconnection connection backup work between adjacent unit board cards can be realized, and the integrated economy, simplicity and high reliability are realized.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims (10)

1. An LED display screen power supply system, characterized in that the LED display screen power supply system comprises a plurality of power supply groups, each power supply group comprising 1 ac line, 1 dc line and a plurality of boxes (30);
the alternating current circuit is provided with an alternating current bus parallel (10), and the direct current circuit is provided with a direct current line straight-through series (21) and/or a direct current bus parallel (20);
the box body (30) comprises a main circuit board (31) and a display module (32) electrically connected with the main circuit board (31), wherein an alternating current interface end (331) and at least one direct current interface end (332) are arranged on the main circuit board (31);
the alternating current interface end (331) of each box body (30) is electrically connected with the alternating current bus of the group in parallel (10);
the direct current interface end (332) of each box body (30) is connected in series with the direct current interface ends (332) of two adjacent box bodies (30) in the group through direct current wires of the group in direct current series connection (21); and/or
The direct current interface end (331) of each box body (30) is electrically connected with the direct current buses of the group in parallel (20).
2. The LED display power supply system of claim 1, wherein the ac interface end (331) of each of the housings (30) is further electrically connected in parallel (10) with at least one other set of ac buses;
when the direct current interface end (332) of each box body (30) is electrically connected with the direct current buses of the group in parallel (20), the direct current interface end (332) of each box body (30) is also electrically connected with the direct current buses of the at least one other group in parallel (20).
3. The LED display power supply system according to claim 1, characterized in that the main circuit board (31) comprises a control and power integrated circuit (36), the control and power integrated circuit (36) being provided with a power circuit (33) and an integrated control circuit (35), the integrated control circuit (35) being electrically connected to the power circuit (33) and being in communication connection with the display module (32);
the alternating current interface end (331) and the direct current interface end (332) are respectively and electrically connected with the power circuit (33);
a first network cable connector (351) and a second network cable connector (352) of the control and power integrated circuit (36) are in communication connection with the integrated control circuit (35).
4. A LED display screen power supply system as claimed in claim 3, characterized in that the main circuit board (31) is further provided with a first connector (333), the first connector (333) being electrically connected to the power supply circuit (33) and the integrated control circuit (35);
the display module (32) is provided with a second connector, and the second connector is connected with the first connector (333) in a plugging manner so as to realize the electric connection between the display module (32) and the power circuit (33) and the signal connection between the display module and the integrated control circuit (35).
5. The LED display power supply system of claim 2, wherein the housing (30) is further provided with a first multi-wire connector (341) and a second multi-wire connector (342);
the first multi-power-line connector (341) is electrically connected with an alternating current interface end (331) of the box body (30) and is used for electrically connecting the alternating current bus parallel connection (10) of the group and/or at least one alternating current bus parallel connection (10) of another group;
the second multi-power line connector (342) is electrically connected with the direct current interface end (332) of the box body (30) and is used for electrically connecting the direct current bus parallel connection (20) of the group and/or the direct current bus parallel connection (20) of the at least one other group; or alternatively
The second multi-wire connector (342) is electrically connected with the direct current interface end (332) of the box body (30) and is used for electrically connecting the direct current wires of the group to be directly connected in series (21).
6. A LED display power supply system as claimed in claim 3, characterized in that the first wire connection (351) is in communication with a second wire connection (352) of an adjacent box (30);
the second wire connector (352) is in communication with a first wire connector (351) of another adjacent tank (30).
7. The LED display screen power supply system of claim 2, wherein the dc bus parallel (20) and dc line direct series (21) employ 3-core dc lines including positive, negative and ground lines;
the alternating current bus parallel connection (10) adopts a 3-core alternating current line, which comprises a fire wire, a zero wire and a ground wire.
8. The LED display power supply system according to any one of claims 1 to 7, wherein the plurality of housings (30) in each power supply group are arranged in a row, and the plurality of power supply groups are orderly arranged such that the plurality of housings (30) of the LED display form a display matrix.
9. The LED display screen power supply system according to claim 8, wherein the case (30) is provided with a heat dissipation case, the back surface of the area of the main circuit board (31) corresponding to the power circuit (33) is attached to the heat dissipation case, and the front surface of the area is provided with an insulating cover plate.
10. An LED display screen, characterized in that it comprises an LED display screen power supply system according to any of claims 1 to 9.
CN202311327891.7A 2023-10-13 2023-10-13 LED display screen power supply system and LED display screen Pending CN117411161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311327891.7A CN117411161A (en) 2023-10-13 2023-10-13 LED display screen power supply system and LED display screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311327891.7A CN117411161A (en) 2023-10-13 2023-10-13 LED display screen power supply system and LED display screen

Publications (1)

Publication Number Publication Date
CN117411161A true CN117411161A (en) 2024-01-16

Family

ID=89491815

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311327891.7A Pending CN117411161A (en) 2023-10-13 2023-10-13 LED display screen power supply system and LED display screen

Country Status (1)

Country Link
CN (1) CN117411161A (en)

Similar Documents

Publication Publication Date Title
CN208077542U (en) display module, display screen and display system
CN108879649B (en) display device and plug-in protection device thereof
US20220130300A1 (en) Display screen lighter and display screen detection device
CN117411161A (en) LED display screen power supply system and LED display screen
CN104679116A (en) Server cabinet system, circuit board combined system and circuit board of circuit combined system
CN215912029U (en) High power density driver with SiC power module
CN103199818A (en) Filter circuit and electric connector with filter circuit
CN211427807U (en) Drive circuit and display device
CN103065900A (en) Fuse device and power distribution unit
CN210807877U (en) Fastener base connection structure of rack
CN219371417U (en) Integrated plug wire head
CN219643134U (en) Digital quantity output interface board and digital quantity output system
CN203013662U (en) Fusing device and power distributing unit
CN201117986Y (en) Multifunctional combined socket
CN219554824U (en) Voltage conversion device and electronic device
CN220022226U (en) Power supply system of LED display screen and LED display screen
CN217063596U (en) Motor drive device
EP4301095A1 (en) Led module with surge current protection
US11769935B1 (en) Wiring harness for energy storage system
CN214505991U (en) Signal converging type bus bar
CN210490005U (en) Extensible power socket with USB (universal serial bus) socket
CN212541917U (en) SSD test carrier plate and SSD test system
CN219350764U (en) Internal assembly of socket and socket
CN216215967U (en) Charging control module
CN214848426U (en) Circuit breaker

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination