CN204377184U - A kind of LED power supply circuits - Google Patents
A kind of LED power supply circuits Download PDFInfo
- Publication number
- CN204377184U CN204377184U CN201420647687.3U CN201420647687U CN204377184U CN 204377184 U CN204377184 U CN 204377184U CN 201420647687 U CN201420647687 U CN 201420647687U CN 204377184 U CN204377184 U CN 204377184U
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- China
- Prior art keywords
- power supply
- display unit
- lamp plate
- led
- unit lamp
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to LED for electrical domain, relates more specifically to a kind of LED power supply circuits.It comprises several display unit lamp plates, and also comprise the communication power supply unit for connecting power supply, several display unit lamp plates are connected to DC/DC board, and the DC/DC board that each display unit lamp plate is corresponding is all connected to communication power supply unit.The utility model is by communication power supply unit external power supply, as civil power, then civil power is carried out changing rear Parallel opertation voltage, then by the DC/DC board that each display unit lamp plate connects, voltage is changed, for each display unit lamp plate is powered, realize concentration supply power.During embody rule, communication power supply units' installation is outside display unit lamp plate, on the base that specifically can be arranged on LED display system or LED rack, communication power supply unit is placed by the space of display system auxiliary device, the space of display unit lamp plate can be saved, alleviate the weight of display unit lamp plate.
Description
Technical field
The utility model relates to LED for electrical domain, more specifically, relates to a kind of LED power supply circuits.
Background technology
Usually light source is provided by dot matrix LED in current LED screen, prior art mid point array type LED adopts distributed supply power mode usually, specifically as shown in Figure 1, each display unit all adopts independently AC/DC power supply, access AC/DC power supply by civil power, directly export 5v power supply by AC/DC power supply and power to display unit lamp plate.This distributed power supply mode needs the corresponding AC/DC power supply of each display unit, affects thickness and the weight of display unit on the one hand, and what limit screen system can installation environment, be difficult to realize power supply redundancy on the other hand, namely allow to realize, need larger cost, uneconomical.And distributed power supply mode also causes noise in display unit large, heat dissipation problem and EMC problem are difficult to resolve certainly.
Utility model content
The utility model, for overcoming at least one defect (deficiency) described in above-mentioned prior art, provides a kind of LED power supply circuits realizing concentration supply power.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of LED power supply circuits, comprise several display unit lamp plates, also comprise the communication power supply unit for connecting power supply, several display unit lamp plates are connected to DC/DC board, and the DC/DC board that each display unit lamp plate is corresponding is all connected to communication power supply unit.
The utility model is by communication power supply unit external power supply, as civil power, then civil power is carried out changing rear Parallel opertation voltage, then by the DC/DC board that each display unit lamp plate connects, voltage is changed, for each display unit lamp plate is powered, realize concentration supply power.During embody rule, communication power supply units' installation is outside display unit lamp plate, on the base that specifically can be arranged on LED display system or LED rack, communication power supply unit is placed by the space of display system auxiliary device, the space of display unit lamp plate can be saved, alleviate the weight of display unit.
In addition, the display unit lamp plate of display unit adopts DC/DC board to carry out the conversion of voltage, relative to AC/DC power supply, can make whole display unit more frivolous greatly expanded display unit can installation environment, the mounting means such as wall-hanging and embedded of LED display system is more easily realized, and display unit fan-free, noise is less, EMC better effects if.
Accompanying drawing explanation
Fig. 1 is that prior art mid point array type LED adopts distributed power supply circuit usually.
Fig. 2 is the circuit diagram of a kind of LED power supply circuits of the utility model specific embodiment.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
In description of the present utility model, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as the quantity of instruction or hint relative importance or implicit indicated technical characteristic.Thus, one or more these features can be expressed or impliedly be comprised to the feature of " first ", " second " of restriction.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also can be indirectly connected by intermediary, the connection of two element internals can be said.For the ordinary skill in the art, concrete condition above-mentioned term can be understood at concrete meaning of the present utility model.
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
Embodiment 1
As shown in Figure 1, be the circuit diagram of a kind of LED power supply circuits of the utility model specific embodiment.See Fig. 1, a kind of LED power supply circuits of this specific embodiment comprise several display unit lamp plates 101 and the communication power supply unit 102 for being connected power supply, several display unit lamp plates 101 are connected to DC/DC board 103, and the DC/DC board 103 of each display unit lamp plate 101 correspondence is all connected to communication power supply unit 102.
This specific embodiment is by the external power supply of communication power supply unit 102, then power supply is carried out changing rear Parallel opertation voltage, the DC/DC board 103 pairs of voltages connected by each display unit lamp plate 101 are again changed, and for each display unit lamp plate is powered, realize concentration supply power.As the civil power as power supply is exported 53.5v by concentrating after communication power supply unit 102, then to convert 5v power supply to by DC/DC board 103 be that display unit lamp plate 101 is powered.When embody rule, communication power supply unit 102 is connected to power supply by distribution box 104.Wherein, communication power supply unit 102 can be realized by multiple communication power supply parallel connection, and power supply generally adopts the circuit of full-bridge to realize.
During embody rule, communication power supply unit 102 is installed on outside display unit lamp plate, on the base that specifically can be arranged on LED display system or LED rack, communication power supply unit is placed by the space of display system auxiliary device, the space of display unit lamp plate can be saved, alleviate the weight of display unit.
Due to communication power supply unit 102 power supply is changed after by parallel way output voltage, easily realize the N+1 redundancy of power supply, thus improve the reliability of system.
Particularly, in communication power supply unit 102, autonomous equalizing current device can be set.By autonomous equalizing current device, output current is adjusted, guarantee the normal work of system.
In specific implementation process, as shown in Figure 2, also correspondingly between communication power supply unit 102 with each DC/DC board 103 be connected with air switch 105, namely the power supply of communication power supply unit 102 exports on busbar and adds N group air switch 105, and every bar of communication power supply unit 102 exports cable and all connects each DC/DC board 103 again by air switch 105.Thus be connected to display unit lamp plate 101, when display unit fault or cable short circuit, air switch 105 can disconnect automatically, can effectively prevent LED display system wide-area power outage and stop cable risk on fire.
In specific implementation process, in order to avoid power supply power failures to the normal work of display unit lamp plate 101, communication power supply unit 102 is also circumscribed with storage battery 106, at power supply, as civil power, system power supply can be continued as by storage battery 106 during power-off, thus realize the uninterrupted power supply of system.
In specific implementation process, this specific embodiment also comprises the watch-dog 107 be connected with communication power supply unit, and watch-dog 107 also connects storage battery 106.Utilize watch-dog 107 can carry out condition monitoring to communication power supply unit 102 and each DC/DC board 103, storage battery 106 etc., the function such as system alarm and electrical source exchange can be realized.One preferred embodiment in, watch-dog 107 can also be connected in remote computer 108 by netting twine or RS485 bus.
In specific implementation process, the DC/DC board 103 that each display unit lamp plate 101 correspondence connects is two or more.Each display unit lamp plate 101 is powered by two or more DC/DC boards 103, can realize unit and to power redundancy backup.
The corresponding same or analogous parts of same or analogous label;
Describe in accompanying drawing position relationship for only for exemplary illustration, the restriction to this patent can not be interpreted as;
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection range that all should be included in the utility model claim.
Claims (8)
1. LED power supply circuits, comprise several display unit lamp plates, it is characterized in that, also comprise the communication power supply unit for connecting power supply, several display unit lamp plates are connected to DC/DC board, and the DC/DC board that each display unit lamp plate is corresponding is all connected to communication power supply unit.
2. LED power supply circuits according to claim 1, is characterized in that, also correspondingly between communication power supply unit with each DC/DC board are connected with air switch.
3. LED power supply circuits according to claim 1, is characterized in that, are provided with autonomous equalizing current device in described communication power supply unit.
4. LED power supply circuits according to claim 1, is characterized in that, described communication power supply unit is also circumscribed with storage battery.
5. LED power supply circuits according to claim 4, is characterized in that, also comprise the watch-dog be connected with communication power supply unit, described watch-dog also connects storage battery.
6. LED power supply circuits according to claim 5, is characterized in that, described watch-dog is also connected with remote computer.
7. LED power supply circuits according to claim 5, is characterized in that, described watch-dog is connected with remote computer by netting twine or RS485 bus.
8. the LED power supply circuits according to any one of claim 1 to 7, is characterized in that, the DC/DC board that each display unit lamp plate correspondence connects is two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647687.3U CN204377184U (en) | 2014-11-03 | 2014-11-03 | A kind of LED power supply circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647687.3U CN204377184U (en) | 2014-11-03 | 2014-11-03 | A kind of LED power supply circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204377184U true CN204377184U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420647687.3U Expired - Fee Related CN204377184U (en) | 2014-11-03 | 2014-11-03 | A kind of LED power supply circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204377184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108564918A (en) * | 2018-04-23 | 2018-09-21 | 湖北集润科技有限公司 | A kind of high-voltage transmission concentration-distribution type LED display screen power-supply system |
-
2014
- 2014-11-03 CN CN201420647687.3U patent/CN204377184U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108564918A (en) * | 2018-04-23 | 2018-09-21 | 湖北集润科技有限公司 | A kind of high-voltage transmission concentration-distribution type LED display screen power-supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20191103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |