CN208063065U - A kind of LED display based on safe power supply device - Google Patents
A kind of LED display based on safe power supply device Download PDFInfo
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- CN208063065U CN208063065U CN201820233909.5U CN201820233909U CN208063065U CN 208063065 U CN208063065 U CN 208063065U CN 201820233909 U CN201820233909 U CN 201820233909U CN 208063065 U CN208063065 U CN 208063065U
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- led display
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- supply device
- power supply
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Abstract
The utility model provides a kind of LED display based on safe power supply device, distribution box is installed in the side of LED display, safe power supply device is installed in distribution box, safe power supply device includes microcontroller, power module, band takes off the breaker of mouth mechanism, contactor, rectification module, DC decompression module, DC bus is arranged and DC terminal row, the upper end of breaker is electrically connected with city, its lower end is successively through contactor, rectification module, DC decompression module is electrically connected with DC bus row, the upper end that DC bus row arranges with DC terminal is connect, the lower end of DC terminal row is connect by power cord with the input terminal of each electrical equipment inside LED display.Mains AC is converted to DC voltage 48V by the utility model by rectification module, it is very low safe voltage 3.8-5V to have DC decompression module to be depressured DC voltage 48V again, it is powered again to each electrical equipment inside LED display by being cased with the power cord of fire-resistant insulated tube, can hotline maintenance, human body will not be hurt.
Description
Technical field
The utility model is related to arrive the full-color preceding maintenance display screen fields LED, more particularly to it is a kind of based on safe power supply dress
The LED display set.
Background technology
As current LED is fixedly mounted with the more and more extensive of display applications, the display screen overwhelming majority used in the market is case
Body band 100-240V powers, so when babinet breaks down, cabinet shell is likely that there are 100V or so electrical leakage voltages, and
Being fixedly mounted with display screen in certain occasion LED cannot power off, and need hotline maintenance, its LED display cabinet shell Hui Yin in maintenance
It charges and hurts human body, in order to use LED display safely, it is desirable to provide a kind of LED display based on safe power supply device.
Utility model content
The utility model provides a kind of LED display based on safe power supply device, by rectification module by mains
Become direct current 24-36V to enter in LED display, then it is direct current safe voltage to have DC decompression module to be depressured direct current 24-36V
3.8-5V, because entering the voltage highest 36V inside LED display, the power supply being connect with LED module is 3.8-5v, and is very
Low safe voltage, with this come the above problem that solves.
To solve the above problems, the technical scheme that the utility model is provided is as follows：
A kind of LED display based on safe power supply device installs distribution box, the distribution in the side of LED display
Safe power supply device is installed, the safe power supply device includes the open circuit of microcontroller, power module, the de- mouth mechanism of band in case
Device, contactor, rectification module, LED display inside install two low pressure and input plug-in units, and two DC decompression modules and direct current connect
Fitting is patched, the upper end of the breaker is electrically connected with city, and input terminal of the lower end successively through contactor and rectification module is electrically connected
It connects, the input terminal that the input terminal of rectification module inputs plug-in unit with two low pressure is electrically connected by power cord, and two low pressure inputs are inserted
The output end of part passes through the input terminal connection that two DC decompression modules connect plug connector electricity with two direct currents, two direct currents respectively
Connection plug connector is connect with the LED module inside LED display；
Zero sequence is installed on control line between the output end of the rectification module and the input terminal of the DC decompression module
Current transformer, the output end of the zero sequence current mutual inductor are electrically connected with the input terminal of microcontroller, the microcontroller
Output end is connect with the first electric switch, the output end of the power module through in the first electric switch and breaker tripping mechanism it is de-
Detain the electrical connection of device coil.
Preferably, it is additionally provided with the second electric switch between the DC decompression module and direct current connection plug connector.
Preferably, power-on button, cut-off button, electric leakage indicator light and for showing also are installed in the cabinet door of the distribution box
The intellect digital display of leakage current value, the power-on button is in parallel with the normally opened contact of contactor, the cut-off button with contact
The coil of device is connected, and the power end of the electric leakage indicator light and intellect digital display is electrically connected by third electric switch with power module
It connects, the zero sequence current mutual inductor is electrically connected with the intellect digital display.
Further, be also equipped with alarm in the cabinet door of the distribution box, the power module by the 4th electric switch with
The alarm electrical connection, the output end of the microcontroller are electrically connected with the 4th electric switch.
Preferably, it is additionally provided with Surge Protector between the breaker and the contactor.
Preferably, earthing pole of the shell of the shell of the LED display and distribution box by being grounded band iron and the earth
Connection.
Preferably, the bushing fire-resistant insulated tube in the outside of the power cord.
Advantageous effect compared with the existing technology is that using the above scheme, the utility model will by the way that rectification module is arranged
Mains AC is converted to be connect with LED module by power cord in DC voltage 24-36V introducing LED displays, then has direct current
DC voltage 24-36V decompressions are very low safe voltage 3.8-5V by voltage reduction module, therefore the voltage that power cord leads to is 24-36V,
The voltage of LED module is 3.8-5V, and when LED display, which breaks down, causes LED display outer casing electrification, human contact arrives
LED display shell will not be hurt, also can hotline maintenance；By the way that intellect digital display is arranged, and it is electric with zero sequence current mutual inductor
Connection, and then can show leakage current value；By installing alarm, when electric leakage accident occurs, alarm work, prompter
Member pays attention to avoiding getting an electric shock；By a bushing fire-resistant insulated tube outside power cord, further personnel can be avoided to get an electric shock.
Description of the drawings
Illustrate embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment or the prior art
The required attached drawing used is briefly described in description, it is clear that, the accompanying drawings in the following description is only the one of utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the distribution box structure schematic diagram of the utility model；
Fig. 2 is the safe power supply device electrical schematic diagram of the utility model.
Shown in the above legend：1, distribution box 2, LED display 3, microcontroller 4, power module 5, breaker
6, contactor 7, rectification module 8, DC decompression module 9, direct current connect plug connector 10, low pressure inputs plug-in unit 11,
Zero sequence current mutual inductor 12, intellect digital display 13, power-on button 14, cut-off button 15, electric leakage indicator light 16, wave
Surge protector 17, fire-resistant insulated tube.
Specific implementation mode
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.Make to this on the contrary, purpose of providing these embodiments is
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ",
For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement
Mark.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
As shown in Figure 1, the embodiments of the present invention 1 are：
A kind of LED display based on safe power supply device, mounting structure are as follows：In the side of LED display 2, installation is matched
Electronic box 1, installs safe power supply device in the distribution box 1, the safe power supply device include microcontroller 3, power module 4,
Band takes off breaker 5, contactor 6 and the rectification module 7 of mouth mechanism, breaker 5 is installed in the upper left corner of the inside of distribution box, disconnected
Surge Protector 16 is installed on the right side of road device 5, and contactor 6, rectification module 7 and zero sequence electricity are installed successively in the lower part of breaker 5
Current transformer 11, microcontroller is installed on the right side of contactor 6, installs three electric switches on the right side of rectification module, respectively
First electric switch, third electric switch, the 4th electric switch install power module 4 on the right side of zero sequence current mutual inductor 11；In distribution
LED display 2 is installed on the right side of case, and the pinboard of the inside of the display screen of LED installs two DC decompressions under upper successively
Module, two direct current connection plug connectors 9 and two low pressure input plug-in unit 10, and the output end of rectification module 7 passes through power cord and two
The input terminal of the input terminal connection of a low pressure input plug-in unit 10, two low pressure input plug-in units 10 passes through two DC decompression modules 8
Plug connector electrical connection is connect with two direct currents respectively, direct current connection plug connector 9 connect with LED module, and more power cords make
It is bundled into its a branch of external bushing fire-resistant insulated tube 17 with band.
Further, rectification module 7 is the rectifier transformer that mains AC is converted to direct current 24-36V, DC decompression
Module 8 is that DC voltage 24-36V is converted to the DC decompression transformer of safe voltage 3.8-5V direct currents, passes through power cord
To the LED module power supply in LED display 2, when inside LED display 2 because of failure when 2 outer casing electrification of LED display, human body
Human body will not be damaged by touching unintentionally.
As shown in Fig. 2, the upper end of the breaker 5 is electrically connected with city, lower end successively through contactor 6, rectification module 7,
DC decompression module 8 connect the electrical connection of plug connector 9 with direct current, and direct current connects the defeated of input terminal and the DC decompression module of plug connector
Outlet is electrically connected, and direct current connects the LED module connection in the output end and LED display of plug connector；Breaker 5 is internally provided with
Tripping mechanism, tripping mechanism include trip coil；
Zero is installed on control line between the output end of the rectification module 7 and the input terminal of the DC decompression module 8
The output end of sequence current transformer 11, the zero sequence current mutual inductor 11 is electrically connected with the input terminal of microcontroller 3, the micro-control
The output end of device 3 processed is connect with the first electric switch, and the output end of the power module 4 in the first electric switch and breaker 5 through taking off
The trip coil of buckle mechanism is electrically connected；Further, zero sequence current mutual inductor 11 also passes through control loop and trip coil electricity
Connection, control loop are the control loop between the 2 each electrical equipment in inside of LED display, and power module 4 passes through the first electric switch
It powers with trip coil, when zero sequence current mutual inductor 11 detects control loop or the master that 7 output end of rectification module is connect
When circuit has the leakage current generated by failure, leakage current signal is transmitted to microcontroller 3, microcontroller 3 is divided
Analysis is handled, and the action of the first electric switch is made to be closed, to power on working power circuit of the module 4 to trip coil, open circuit
The tripping mechanism of device 5 is electric because trip coil obtains that tripping mechanism action is made to disconnect, and then breaker 5 powers off, and then cuts off
To the power supply of LED display 2, personnel's electric shock is avoided.
Embodiment 2, regulator circuit and filter circuit can also be installed by arranging 10 lower ends in DC terminal, and two circuits with control
Circuit processed is in parallel, to make the more smoothly operation of LED display 2.
Preferably, the second electric switch, the second electricity are additionally provided between the DC decompression module 8 and DC bus row 9
Switch is electrically connected with microcontroller 3.
Further, when LED display 2 needs maintenance, microcontroller 3 makes the second electric switch disconnect, and then cuts off direct current
Plug connector 9 is connected, in order to interruption maintenance.
Further, when one of DC decompression module is broken, the normal use of LED display, 24-36V are nor affected on
Voltage by power cord introduce LED display in, 24-36V DC voltages are then converted into 3.8- by DC decompression module
5V DC voltage access direct current connection plug connector in, LED module be plugged into direct current connection plug connector on, can hotline maintenance, no
Human body can be hurt.
Preferably, power-on button 13, cut-off button 14, electric leakage indicator light 15 are also installed in the cabinet door of the distribution box and used
In the intellect digital display 12 of display leakage current value, the power-on button 13 is in parallel with the normally opened contact of contactor 66, described disconnected
Eletric button 14 is connected with the coil of contactor 66, and the power end of the electric leakage indicator light 15 and intellect digital display 12 passes through third
Electric switch is electrically connected with power module 4, and the zero sequence current mutual inductor 11 is electrically connected with the intellect digital display 12；Further,
When pressing power-on button 13, contactor 66 is because obtaining electric actuation, and major loop electrification, then LED display 2 is also charged and worked；When
When pressing cut-off button 14,66 coil of contactor disconnects contactor 66 because of power-off, and then major loop powers off, LED display 2
Power-off does not work；When zero sequence current mutual inductor 11 detects that control loop has electric leakage accident, can be shown in intellect digital display 12
Leakage current is shown.
Further, be also equipped with alarm in the cabinet door of the distribution box, the power module 4 by the 4th electric switch with
The alarm electrical connection, the output end of the microcontroller 3 are electrically connected with the 4th electric switch；Further, work as zero sequence
When current transformer 11 is detected with leakage current, electric leakage signal is transmitted to microcontroller 3, microcontroller 3 makes the 4th electric switch
It is closed, and then keeps alarm electric because obtaining due to work, pay attention to thering is LED display 2 to have drain conditions with offer personnel, convenient for place in time
Reason.
Preferably, Surge Protector 16 is additionally provided between the breaker 5 and the contactor 6.
Preferably, the shell of the shell of the display screen and distribution box is connected by being grounded the earthing pole of band iron and the earth
It connects.
Advantageous effect compared with the existing technology is that using the above scheme, the utility model will by the way that rectification module is arranged
Mains AC is converted to be connect with LED module by power cord in DC voltage 24-36V introducing LED displays, then has direct current
DC voltage 24-36V decompressions are very low safe voltage 3.8-5V by voltage reduction module, therefore the voltage that power cord leads to is 24-36V,
The voltage of LED module is 3.8-5V, and when LED display, which breaks down, causes LED display outer casing electrification, human contact arrives
LED display shell will not be hurt, also can hotline maintenance；By the way that intellect digital display is arranged, and it is electric with zero sequence current mutual inductor
Connection, and then can show leakage current value；By installing alarm, when electric leakage accident occurs, alarm work, prompter
Member pays attention to avoiding getting an electric shock；By a bushing fire-resistant insulated tube outside power cord, further personnel can be avoided to get an electric shock.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection model of the appended claims for the utility model
It encloses.
Claims (7)
1. a kind of LED display based on safe power supply device installs distribution box in the side of LED display, it is characterised in that：
Safe power supply device is installed, the safe power supply device includes microcontroller, power module, the de- mouth mechanism of band in the distribution box
Breaker, contactor, rectification module, two low pressure are installed inside LED display and input plug-in units, two DC decompression modules and
Direct current connects plug connector, and the upper end of the breaker is electrically connected with city, the lower end input through contactor and rectification module successively
End electrical connection, the input terminal that the input terminal of rectification module inputs plug-in unit with two low pressure are electrically connected by power cord, two low pressure
The input terminal that the output end of input plug-in unit connect plug connector electricity by two DC decompression modules with two direct currents respectively connects, and two
A direct current connection plug connector is connect with the LED module inside LED display；
Zero-sequence current is installed on control line between the output end of the rectification module and the input terminal of the DC decompression module
Mutual inductor, the output end of the zero sequence current mutual inductor are electrically connected with the input terminal of microcontroller, the output of the microcontroller
End is connect with the first electric switch, and the output end of the power module is through the buckle releaser of tripping mechanism in the first electric switch and breaker
Coil is electrically connected.
2. according to the LED display based on safe power supply device described in claim 1, it is characterised in that：The direct current drop
It is additionally provided with the second electric switch between die block and direct current connection plug connector.
3. according to the LED display based on safe power supply device described in claim 1, it is characterised in that：The distribution box
Cabinet door on power-on button, cut-off button, the electric leakage indicator light and intellect digital display for showing leakage current value, institute are also installed
State that power-on button is in parallel with the normally opened contact of contactor, the cut-off button is connected with the coil of contactor, the electric leakage instruction
Lamp and the power end of intellect digital display are electrically connected by third electric switch with power module, the zero sequence current mutual inductor and institute
State intellect digital display electrical connection.
4. according to the LED display based on safe power supply device described in claim 3, it is characterised in that：The distribution box
Cabinet door on be also equipped with alarm, the power module is electrically connected by the 4th electric switch with the alarm, the micro-control
The output end of device processed is electrically connected with the 4th electric switch.
5. according to the LED display based on safe power supply device described in claim 1, it is characterised in that：The breaker
It is additionally provided with Surge Protector between the contactor.
6. according to the LED display based on safe power supply device described in claim 1, it is characterised in that：The LED is shown
The shell of screen and the shell of distribution box are connected by being grounded the earthing pole of band iron and the earth.
7. according to the LED display based on safe power supply device described in claim 1, it is characterised in that：The power cord
The bushing fire-resistant insulated tube in outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820233909.5U CN208063065U (en) | 2018-02-09 | 2018-02-09 | A kind of LED display based on safe power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820233909.5U CN208063065U (en) | 2018-02-09 | 2018-02-09 | A kind of LED display based on safe power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208063065U true CN208063065U (en) | 2018-11-06 |
Family
ID=63992936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820233909.5U Active CN208063065U (en) | 2018-02-09 | 2018-02-09 | A kind of LED display based on safe power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208063065U (en) |
-
2018
- 2018-02-09 CN CN201820233909.5U patent/CN208063065U/en active Active
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