CN217444050U - Power supply device for LED display screen - Google Patents
Power supply device for LED display screen Download PDFInfo
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- CN217444050U CN217444050U CN202221315888.4U CN202221315888U CN217444050U CN 217444050 U CN217444050 U CN 217444050U CN 202221315888 U CN202221315888 U CN 202221315888U CN 217444050 U CN217444050 U CN 217444050U
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- 238000004134 energy conservation Methods 0.000 abstract description 3
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- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a LED display screen power supply unit, including a plurality of power supply boxes, the power supply box includes keysets module and LED lamp plate module, the keysets module includes receiver card unit, first step-down unit and second step-down unit, the input of receiver card unit is external to have the sender card unit, the output of receiver card unit is connected with the input of first step-down unit, the first output and the second step-down unit of first step-down unit are connected, the second output and the input of LED lamp plate module of first step-down unit are connected, the third output of first step-down unit is connected with the first step-down unit in the adjacent power supply box. The utility model discloses in, carry out the segmentation step-down to the commercial power through the keysets module in the power supply box to and supply power to the equipment of difference respectively through a plurality of units, can reduce generating heat of keysets module and LED lamp plate module, thereby reach energy-conservation and alleviate the look and waft.
Description
Technical Field
The utility model relates to a LED display screen power supply unit especially relates to a LED display screen power supply unit.
Background
The LED display screen power supply mode of today adopts external power supply to supply power basically, and the voltage of input generally is between 4.2V-5V, and input current is big moreover, and this kind of power supply technique can lead to the circuit board inside will produce a large amount of heats because of the electric current is big, generates heat and seriously can influence the luminous colour of LED lamp, and the production is showy, and power loss in addition, the mains operated also can produce the pressure drop on to the LED lamp plate, and these problems all can influence the display effect of display screen.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a power supply device for a LED display screen, which can solve the problems of large heat loss and unstable power supply of the existing power supply mode.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a LED display screen power supply unit, includes a plurality of power supply boxes, the power supply box includes keysets module and LED lamp plate module, the keysets module is including receiving card unit, first step-down unit and second step-down unit, the input of receiving card unit is external to have the sending card unit, the output of receiving card unit is connected with the input of first step-down unit, the first output and the second step-down unit of first step-down unit are connected, the second output and the input of LED lamp plate module of first step-down unit are connected, the third output of first step-down unit is connected with the first step-down unit in the adjacent power supply box.
Preferably, the first voltage reduction unit includes a transformer T1, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor CL, and a resistor RL, an input end of the transformer T1 is connected to an output end of the card receiving unit, a cathode of the diode D4 and an anode of the diode D1 are both connected to an anode of an output end of the transformer T1, an anode of the diode D2 and a cathode of the diode D3 are both connected to a cathode of an output end of the transformer T1, a cathode of the diode D1, a cathode of the diode D2, one end of the capacitor CL, one end of the resistor RL and an input end of the second voltage reduction unit, and an input end of the LED lamp panel module are all connected to the first voltage reduction unit in the adjacent power supply box, and an anode of the diode D3, an anode of the diode D4, the other end of the capacitor CL, and the other end of the resistor RL are all grounded.
Preferably, the second voltage reduction unit includes a capacitor Cin1, a chip U1, a capacitor CF1, a diode D5, an inductor L1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor Cout1, one end of the capacitor Cin1, the input end VIN of the chip U1, the cathode of the diode D1, the cathode of the diode D2, one end of the capacitor CL and one end of the resistor RL are all connected to the first voltage reduction unit in the adjacent power supply box, the expansion end BS of the chip U1 is connected to one end of the capacitor CF1, the other end of the capacitor CF1, the inductor SW of the chip U1 and the cathode of the diode D1 are all connected to one end of the inductor L1, the other end of the inductor L1, one end of the resistor R1, one end of the capacitor C1 and one end of the capacitor Cout1 are all connected to an external device, the other end of the resistor R1, one end of the resistor R1 and the other end of the capacitor C1 are all connected to the output end FB of the chip U1, and the output end of the capacitor Cout1, and the feedback end of the chip U1 are all connected to the output end FB of the chip U1, The ground GND of the chip U1, the other end of the resistor R2, and the other end of the capacitor Cout1 are all grounded.
Preferably, the LED lamp panel module includes a third voltage reduction unit for externally connecting a red constant current driver chip and a fourth voltage reduction unit for externally connecting a green constant current driver chip and a blue constant current driver chip, and an input end of the third voltage reduction unit and an input end of the fourth voltage reduction unit are both connected to the second output end of the first voltage reduction unit.
Compared with the prior art, the beneficial effects of the utility model reside in that: the mains supply is stepped down by the adapter plate module in the power supply box body, different devices are powered through the units respectively, heating of the adapter plate module and the LED lamp panel module can be reduced, and accordingly energy conservation and color floating lightening are achieved.
Drawings
Fig. 1 is a schematic diagram of an actual application of the power supply device for an LED display screen according to the present invention.
Fig. 2 is a circuit diagram of the first voltage reduction unit of the present invention.
Fig. 3 is a circuit diagram of the second voltage reducing unit of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-3, a power supply device for an LED display screen comprises a plurality of power supply boxes, each power supply box comprises a patch panel module and an LED lamp panel module, each patch panel module comprises a receiving card unit, a first voltage reduction unit and a second voltage reduction unit, the input end of the receiving card unit is externally connected with a sending card unit, the output end of the receiving card unit is connected with the input end of the first voltage reduction unit, the first output end of the first voltage reduction unit is connected with the second voltage reduction unit, the second output end of the first voltage reduction unit is connected with the input end of the LED lamp panel module, and the third output end of the first voltage reduction unit is connected with the first voltage reduction unit in the adjacent power supply box. Preferably, the first voltage reduction unit includes a transformer T1, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor CL, and a resistor RL, an input end of the transformer T1 is connected to an output end of the card receiving unit, a cathode of the diode D4 and an anode of the diode D1 are both connected to an anode of an output end of the transformer T1, an anode of the diode D2 and a cathode of the diode D3 are both connected to a cathode of an output end of the transformer T1, a cathode of the diode D1, a cathode of the diode D2, one end of the capacitor CL, one end of the resistor RL and an input end of the second voltage reduction unit, and an input end of the LED lamp panel module are all connected to the first voltage reduction unit in the adjacent power supply box, and an anode of the diode D3, an anode of the diode D4, the other end of the capacitor CL, and the other end of the resistor RL are all grounded. In this embodiment, the 220V commercial power transmitted by the card sending unit is reduced to 36V ac power by the transformer T1, and then the 36V ac power is converted to 36V dc power by the rectifying circuit composed of the diode D1, the diode D2, the diode D3 and the diode D4, preferably, the 36V dc power output by the first voltage reducing unit is mutually communicated with the first voltage reducing unit in the adjacent power supply box, so that when a fault occurs in a certain power supply box, the adjacent power supply box can supply power, and the influence of the fault is reduced.
Preferably, the second voltage reduction unit includes a capacitor Cin1, a chip U1, a capacitor CF1, a diode D5, an inductor L1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor Cout1, one end of the capacitor Cin1, an input terminal VIN of the chip U1, a cathode of the diode D1, a cathode of the diode D2, one end of the capacitor CL and one end of the resistor RL are all connected with the first voltage reduction unit in the adjacent power supply box, the expansion terminal BS of the chip U1 is connected with one end of the capacitor CF1, the other end FB of the capacitor CF1, an inductor SW of the chip U1 and a cathode of the diode D1 are all connected with one end of the inductor L1, the other end of the inductor L1, one end of the resistor R1, one end of the capacitor C1 and one end of the capacitor Cout1 are all connected with an external device, the other end of the resistor R1 and the other end of the capacitor C1 are all connected with the output terminal of the chip U1, and the output terminal of the capacitor Cout1 of the chip U1, and the output terminal of the capacitor C1 are all connected with the output terminal of the chip U1, and the output terminal of the capacitor C1, The ground GND of the chip U1, the other end of the resistor R2, and the other end of the capacitor Cout1 are all grounded. Specifically, the chip U1 can be a PW2558 chip, the 36V direct current is subjected to voltage reduction, and preferably, the second voltage reduction unit supplies power to the external 74HC245 chip and the receiving card unit.
Preferably, the LED lamp panel module includes a third voltage reduction unit for externally connecting a red constant current driver chip and a fourth voltage reduction unit for externally connecting a green constant current driver chip and a blue constant current driver chip, and input ends of the third voltage reduction unit and the fourth voltage reduction unit are both connected with a second output end of the first voltage reduction unit. In this embodiment, the third voltage-reducing unit and the fourth voltage-reducing unit can both adopt the same circuit structure as the second voltage-reducing unit (as shown in fig. 3), according to the formula: VOUT is (1+ R1/R2) × 0.6, wherein VOUT is output voltage, select the resistance of resistance R1 and resistance R2, make the third voltage reduction unit output 3.3V voltage to red constant current driver chip, the fourth voltage reduction unit outputs 3.8V voltage to green constant current driver chip and blue constant current driver chip respectively, realize stepping down the commercial power by stage, and supply power to different equipment respectively through a plurality of units, can reduce the fever of keysets module and LED lamp plate module, thereby reach energy-conservation and alleviate the color drift.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.
Claims (4)
1. The utility model provides a LED display screen power supply unit which characterized in that: the LED lamp panel voltage-reducing power supply device comprises a plurality of power supply boxes, wherein each power supply box comprises a patch panel module and an LED lamp panel module, each patch panel module comprises a receiving card unit, a first voltage-reducing unit and a second voltage-reducing unit, the input end of each receiving card unit is externally connected with a sending card unit, the output end of each receiving card unit is connected with the input end of the corresponding first voltage-reducing unit, the first output end of each first voltage-reducing unit is connected with the corresponding second voltage-reducing unit, the second output end of each first voltage-reducing unit is connected with the input end of the corresponding LED lamp panel module, and the third output end of each first voltage-reducing unit is connected with the corresponding first voltage-reducing unit in the adjacent power supply box.
2. The LED display screen power supply of claim 1, wherein: the first voltage reduction unit comprises a transformer T1, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor CL and a resistor RL, the input end of the transformer T1 is connected with the output end of the card receiving unit, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected with the positive electrode of the output end of the transformer T1, the positive electrode of the diode D2 and the negative electrode of the diode D3 are both connected with the negative electrode of the output end of the transformer T1, the negative electrode of the diode D1, the negative electrode of the diode D2, one end of the capacitor CL, one end of the resistor RL, the input end of the second voltage reduction unit and the input end of the LED lamp panel module are all connected with the first voltage reduction unit in the adjacent power supply box body, and the positive electrode of the diode D3, the positive electrode of the diode D4, the other end of the capacitor CL and the other end of the resistor RL are all grounded.
3. The LED display screen power supply of claim 2, wherein: the second voltage reduction unit comprises a capacitor Cin1, a chip U1, a capacitor CF1, a diode D5, an inductor L1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor Cout1, one end of the capacitor Cin1, the input end VIN of the chip U1, the cathode of the diode D1, the cathode of the diode D2, one end of the capacitor CL and one end of the resistor RL are all connected with the first voltage reduction unit in the adjacent power supply box, the expansion end BS of the chip U1 is connected with one end of the capacitor CF1, the other end of the capacitor CF1, the inductor SW of the chip U1 and the cathode of the diode D1 are all connected with one end of the inductor L1, the other end of the inductor L1, one end of the resistor R1, one end of the capacitor C1 and one end of the capacitor Cout1 are all connected with external equipment, the other end of the resistor R1, one end of the other end of the resistor R1 and the other end of the capacitor C1 are all connected with the feedback end of the output of the chip U1, and the feedback end of the capacitor U1, The ground GND of the chip U1, the other end of the resistor R2, and the other end of the capacitor Cout1 are all grounded.
4. The LED display screen power supply of claim 1, wherein: the LED lamp panel module comprises a third voltage reduction unit and a fourth voltage reduction unit, the third voltage reduction unit is used for being externally connected with a red constant current driving chip, the fourth voltage reduction unit is used for being externally connected with a green constant current driving chip and a blue constant current driving chip, and the input end of the third voltage reduction unit and the input end of the fourth voltage reduction unit are both connected with the second output end of the first voltage reduction unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315888.4U CN217444050U (en) | 2022-05-27 | 2022-05-27 | Power supply device for LED display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221315888.4U CN217444050U (en) | 2022-05-27 | 2022-05-27 | Power supply device for LED display screen |
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| Publication Number | Publication Date |
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| CN217444050U true CN217444050U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221315888.4U Active CN217444050U (en) | 2022-05-27 | 2022-05-27 | Power supply device for LED display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117059020A (en) * | 2023-09-14 | 2023-11-14 | 广东保伦电子股份有限公司 | LED display screen driving circuit with low turning voltage and LED display screen |
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2022
- 2022-05-27 CN CN202221315888.4U patent/CN217444050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117059020A (en) * | 2023-09-14 | 2023-11-14 | 广东保伦电子股份有限公司 | LED display screen driving circuit with low turning voltage and LED display screen |
| CN117059020B (en) * | 2023-09-14 | 2024-02-27 | 广东保伦电子股份有限公司 | LED display screen driving circuit with low turning voltage and LED display screen |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Baolun Electronics Co.,Ltd. Address before: No.19 Chuangyuan Road, Zhongcun street, Panyu District, Guangzhou, Guangdong 510000 Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |