CN216290665U - LED screen electrical control system - Google Patents
LED screen electrical control system Download PDFInfo
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- CN216290665U CN216290665U CN202121793442.8U CN202121793442U CN216290665U CN 216290665 U CN216290665 U CN 216290665U CN 202121793442 U CN202121793442 U CN 202121793442U CN 216290665 U CN216290665 U CN 216290665U
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- power supply
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- led screen
- control system
- electrical control
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Abstract
The utility model discloses an LED screen electrical control system which comprises a plurality of box bodies, wherein a plurality of switch power supplies are arranged in each box body, each switch power supply is a 5V switch power supply, the switch power supplies are connected in parallel to form a power supply circuit for supplying power to an LED screen, the power supply circuits of every two adjacent box bodies are connected in series, a time relay is connected in series between every two adjacent box bodies, and the power supply circuits are connected with the time relay. Compared with the prior art, the utility model can avoid the problems that when the LED screen is lightened, all power modules of the whole screen are started at the same time, so that the cold start surge current is overlarge, and the electric cabinet is easy to trip.
Description
Technical Field
The utility model relates to the technical field of LED screens, in particular to an electrical control system of an LED screen.
Background
As shown in fig. 1, currently, the lighting mode of the LED screen is to turn on the electric cabinet, and all power modules of the whole screen are turned on at the same time. The cold start surge current is too large, and the electric cabinet is easy to trip (the normal working current is 1.4A, and the surge current can reach 80A, so that the electric cabinet is tripped).
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an electrical control system of an LED screen, which aims to gradually lighten the LED screen, reduce the cold impact on a power grid and avoid the tripping of an electric cabinet caused by surge current.
In order to achieve the purpose, the utility model provides an LED screen electrical control system which comprises a plurality of box bodies, wherein a plurality of switch power supplies are arranged in each box body, each switch power supply is a 5V switch power supply, the switch power supplies are connected in parallel to form a power supply circuit used for supplying power to an LED screen, the power supply circuits of every two adjacent box bodies are connected in series, a time relay is connected between every two adjacent box bodies in series, and the power supply circuits are connected with the time relay.
The utility model further adopts the technical scheme that a first diode D1 and a second diode D2 are connected in series between the power supply circuits of every two adjacent boxes, the former power supply circuit in the power supply circuits of the two adjacent boxes is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the latter power supply circuit in the power supply circuits of the two adjacent boxes, and the time relays are respectively connected with the cathode of the diode D1 and the cathode of the diode D2.
The utility model further adopts the technical scheme that a receiving card and an indicator light which are connected with the switch power supply are arranged in each box body.
The utility model has the beneficial effects that: according to the technical scheme, the LED screen power supply device comprises a plurality of box bodies, wherein a plurality of switching power supplies are arranged in each box body, the switching power supplies are connected in parallel to form a power supply circuit for supplying power to the LED screen, the power supply circuits of every two adjacent box bodies are connected in series, a time relay is connected between every two adjacent box bodies in series, and the power supply circuits are connected with the time relay, so that the problems that when the LED screen is lightened, all power supply modules of the whole screen are started at the same time, so that cold starting surge current is overlarge, and an electric cabinet is easy to trip are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art electrical control system for an LED panel;
fig. 2 is a schematic structural diagram of a preferred embodiment of an electrical control system for an LED panel according to the present invention.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 2, the utility model provides an electrical control system for an LED screen, in which a preferred embodiment of the electrical control system for an LED screen includes a plurality of boxes, each box is provided with a plurality of switching power supplies, each switching power supply is a 5V switching power supply, the switching power supplies are connected in parallel to form a power supply circuit for supplying power to the LED screen, the power supply circuits of every two adjacent boxes are connected in series, a time relay is connected in series between every two adjacent boxes, and the power supply circuit is connected to the time relay.
This embodiment is through a plurality of switching power supply parallel connection in every box, with every box series connection for a plurality of switching power supply in every box are for starting simultaneously, and the power between the box is for progressively starting, avoids when lighting the LED screen from this, and the cold start surge current that all power module of whole screen open and cause simultaneously time is too big, the problem of the easy trip of electric cabinet.
Further, in order to prevent the power supply circuits of two adjacent boxes from affecting each other, in this embodiment, a first diode D1 and a second diode D2 are connected in series between the power supply circuits of two adjacent boxes, a previous power supply circuit in the power supply circuits of two adjacent boxes is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the cathode of the diode D2, the anode of the diode D2 is connected to a next power supply circuit in the power supply circuits of two adjacent boxes, and the time relays are respectively connected to the cathode of the diode D1 and the cathode of the diode D2.
In addition, in this embodiment, each box body is internally provided with a receiving card and an indicator light which are connected with the switching power supply.
The working principle of the present invention is explained below with reference to fig. 2.
As shown in fig. 2, there are three boxes in fig. 2, each of the boxes is provided with a plurality of parallel 5V switch power supplies, wherein, the plurality of parallel 5V switch power supplies in the first box are superior power supplies, the plurality of parallel 5V switch power supplies are started simultaneously, the plurality of parallel 5V switch power supplies in the second box are primary power supplies, and the plurality of parallel 5V switch power supplies in the third box are subordinate power supplies, because the superior power supplies, the primary power supplies and the subordinate power supplies are connected in series, and a time relay is connected in series between the boxes, the power supplies between the boxes are started step by step, thereby avoiding that when the LED screen is lighted, cold start surge current caused by that all power supply modules of the whole screen are started at the same time, the electric cabinet is easy to trip, and if the superior power supply fails, the subordinate power supplies can still be powered on, 5V weak current is introduced from the power supply of the current stage to the time relay, so that the normal work of the strong current is ensured.
Referring again to fig. 2, a diode D1 and a diode D2 are connected in series between the upper power supply and the lower power supply in opposite directions, and a diode D3 and a diode D4 are connected in series between the lower power supply and the upper power supply in opposite directions, so that weak current between the upper power supply and the lower power supply, and weak current between the lower power supply and the upper power supply are not affected by each other.
The utility model has the beneficial effects that: according to the technical scheme, the LED screen power supply device comprises a plurality of box bodies, wherein a plurality of switching power supplies are arranged in each box body, the switching power supplies are connected in parallel to form a power supply circuit for supplying power to the LED screen, the power supply circuits of every two adjacent box bodies are connected in series, a time relay is connected between every two adjacent box bodies in series, and the power supply circuits are connected with the time relay, so that the problems that when the LED screen is lightened, all power supply modules of the whole screen are started at the same time, so that cold starting surge current is overlarge, and an electric cabinet is easy to trip are solved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The utility model provides a LED screen electrical control system, its characterized in that includes a plurality of boxes, is provided with a plurality of switching power supply in every box, switching power supply is 5V switching power supply, a plurality of switching power supply parallelly connected constitution are used for the power supply circuit who supplies power for the LED screen, and series connection between the power supply circuit of every two adjacent boxes, series connection time relay between every two adjacent boxes, just power supply circuit with time relay connects, the switch.
2. The LED screen electrical control system of claim 1, wherein a first diode D1 and a second diode D2 are connected in series between the power supply circuits of every two adjacent boxes, the former power supply circuit of the power supply circuits of the two adjacent boxes is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the latter power supply circuit of the power supply circuits of the two adjacent boxes, and the time relays are respectively connected with the cathode of the diode D1 and the cathode of the diode D2.
3. The LED screen electrical control system of claim 1 or 2, wherein a receiving card and an indicator light connected with the switching power supply are arranged in each box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121793442.8U CN216290665U (en) | 2021-08-03 | 2021-08-03 | LED screen electrical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121793442.8U CN216290665U (en) | 2021-08-03 | 2021-08-03 | LED screen electrical control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216290665U true CN216290665U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121793442.8U Active CN216290665U (en) | 2021-08-03 | 2021-08-03 | LED screen electrical control system |
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| CN (1) | CN216290665U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
| GB2623351A (en) * | 2022-10-13 | 2024-04-17 | Digiled Uk Ltd | Power switching system |
-
2021
- 2021-08-03 CN CN202121793442.8U patent/CN216290665U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
| GB2623351A (en) * | 2022-10-13 | 2024-04-17 | Digiled Uk Ltd | Power switching system |
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