CN205666606U - Explosion -proof concatenation screen - Google Patents
Explosion -proof concatenation screen Download PDFInfo
- Publication number
- CN205666606U CN205666606U CN201620545745.0U CN201620545745U CN205666606U CN 205666606 U CN205666606 U CN 205666606U CN 201620545745 U CN201620545745 U CN 201620545745U CN 205666606 U CN205666606 U CN 205666606U
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- signal
- explosion
- proof
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- short circuit
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Abstract
The utility model discloses an explosion -proof concatenation screen has solved explosion -proof concatenation screen except overheated other short circuit factor in addition, how carry out the problem that detects to the emergence of short circuit phenomenon, its technical scheme main points are: including detection module and short circuit switching module, detection module is coupled in the power in order to receive mains voltage and output detection signal, the short circuit is switched the module and is coupled in detection module with receiving detection signal and corresponding to the power supply loop of detected signal in order to cut off the display screen, when the power supply loop that detects the display screen as detection module took place the short circuit, the short circuit was switched the module and is cut off the power supply loop of display screen, the utility model discloses an explosion -proof concatenation screen guarantees that explosion -proof concatenation screen can detect when the short circuit to can the automatic cutout power.
Description
Technical field
This utility model relates to LED technology field, particularly to a kind of explosion-proof mosaic screen.
Background technology
Mosaic screen is a complete liquid crystal splicing display unit, can use separately as display, again can be with liquid
Crystalline substance is spliced into jumbotron and uses.Demand is used, it is achieved the variable changeable large-size screen monitors function that also can diminish greatly according to difference.
In existing patent, such as the Chinese patent of Publication No. CN204991046U, a kind of sliceable anti-explosion LED display screen,
Including housing, the front of described housing is provided with LED display, and the side of described housing is uniformly provided with fixture block, and housing is another
Side inner chamber is provided with the draw-in groove corresponding with fixture block position, and the inner chamber of described housing is separately installed with controller and chopper, and
Controller is electrically connected with LED display and chopper respectively.This sliceable anti-explosion LED display screen, by display screen housing it
Between fixture block and draw-in groove, it is achieved the splicing of polylith LED display, during transport and packaging, be greatly saved space, also
The LED display of varying number can be selected as required to be stitched together, the inner chamber of housing is additionally provided with controller and chopper
Cooperating, when temperature sensor detects that temperature reach a certain height, controller controls chopper and is disconnected by whole circuit,
Prevent the short circuit owing to LED display is the most thermally-induced even to explode.
But in the case of energising, mosaic screen is except the overheated short-circuit factor also having other, how to short circuit phenomenon
Detect, the most certain room for improvement.
Utility model content
The purpose of this utility model is to provide a kind of explosion-proof mosaic screen, it is ensured that explosion-proof mosaic screen can detect when short circuit
Arrive, and power supply can be automatically cut off.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of explosion-proof mosaic screen, including power supply, including detection module and short circuit handover module；
Described detection module is coupled to power supply to receive supply voltage output detections signal；
Described short-circuit handover module is coupled to detection module to receive detection signal and to prevent to cut off corresponding to detection signal
The current supply circuit of sudden and violent mosaic screen；
When the current supply circuit that described detection module detects explosion-proof mosaic screen is short-circuited, described short circuit handover module is cut
The current supply circuit of disconnected explosion-proof mosaic screen.
Using such scheme, when explosion-proof mosaic screen is short-circuited, the electric current in circuit can be very big, if not cutting off anti-
Quick-fried mosaic screen, may result in explosion-proof mosaic screen and damages, even explode, and short circuit handover module will cut off the power supply of explosion-proof mosaic screen
Loop, it is ensured that explosion-proof mosaic screen is not damaged by.
As preferably, described power supply has been also coupled to the first indicating member, and described first indicating member is to accept power supply signal
And in response to power supply signal to realize instruction.
Use such scheme, the first indicating member can the duty of clear indication power supply, when the first indicating member
When lighting, indication circuit normally works does not has short circuit.
As preferably, described detection module is audion, and the base stage of described audion is in order to detect the voltage of electric power loop
Signal also responds this voltage signal to realize on or off.
Using such scheme, audion is mainly used in the effect of switch, when situation about being short-circuited in circuit being detected,
Audion can turn within the very first time, makes the state of unlatching, it is ensured that explosion-proof mosaic screen is not damaged by.
As preferably, described short circuit handover module includes partial pressure unit, control unit and trigger element；
Described partial pressure unit is coupled to audion to accept detection signal and to export voltage division signal；
Described control unit is coupled to partial pressure unit to receive voltage division signal and to export control signal；
Described trigger element is coupled to control unit to accept control signal and in response to control signal to realize explosion-proof spelling
Connect the cut-out of the current supply circuit of screen.
Using such scheme, when there is the phenomenon of short circuit in circuit, short circuit handover module can temporarily disconnect short circuit
Place, makes power supply be connected to other places, it is ensured that the normal use of components and parts in circuit.
As preferably, described trigger element is further coupled to the second indicating member, and described second indicating member is to accept triggering
Signal and in response to starting signal with realize instruction.
Use such scheme, the second indicating member can the duty of clear indication power supply, when the second indicating member
When lighting, indication circuit is the most short-circuit, goes maintenance before needing staff.
As preferably, described trigger element is relay.
Using such scheme, relay is a kind of electronic control device, it have control system (also known as input circuit) and
By control system (also known as output loop), relay is commonly used in control circuit, and relay is actually with less electricity
Diffluence controls the one " automatically switch " of larger current, thus play in circuit be automatically adjusted, safeguard protection, change-over circuit etc. are made
With.
As preferably, described relay also reverse parallel connection one fly-wheel diode.
Using such scheme, fly-wheel diode is often used together with relay, prevents voltage x current from suddenling change, it is provided that logical
Road.Freewheeling circuit can discharge the energy stored in relay coil, prevents induced voltage too high, breakdown switch pipe, practical
Property is strong.
As preferably, described trigger element has been also coupled to wireless transmit/receive units, and described wireless transmit/receive units is to receive triggering
Signal and in response to trigger signal with realizes alert.
Use such scheme, when explosion-proof mosaic screen damages, work people in the distance can be allowed by wireless transmit/receive units
Member, the very first time recognizes that explosion-proof mosaic screen has damaged, and before go maintenance.
As preferably, described wireless transmit/receive units includes emission part, acceptance division and warning portion；
Described emission part is coupled to trigger element to receive starting signal and to export transmitting signal；
Described receiving portion is coupled to emission part and accepts signal to receive transmitting signal output；
Described warning portion is coupled to acceptance division to accept to receive signal and in response to receiving signal to realize alarm.
Using such scheme, when explosion-proof mosaic screen damages, warning portion can send alarm, goes dimension before reminding staff
Repair.
As preferably, described warning portion uses sound components.
Using such scheme, use sound components can preferably remind staff, explosion-proof mosaic screen has damaged, with
Use light prompt is compared, and light prompt is not easy to cause the attention of staff, and uses the sound components can be more directly perceived
Tell staff, practical.
In sum, this utility model has the advantages that
1, when explosion-proof mosaic screen is short-circuited, the current supply circuit of explosion-proof mosaic screen can be cut off, it is ensured that explosion-proof mosaic screen is not
Damaged；
2, when the problem of short circuit occurs in explosion-proof mosaic screen, staff can find situation the very first time.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of embodiment one；
Fig. 2 is the circuit theory diagrams of the wireless transmit/receive units in embodiment two.
In figure: 1, detection module；2, short circuit handover module；21, partial pressure unit；22, control unit；23, trigger element；3、
First indicating member；4, the second indicating member；5, wireless transmit/receive units；51, emission part；52, acceptance division；53, warning portion.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Embodiment one: as it is shown in figure 1, a kind of explosion-proof mosaic screen display screen disclosed in the present embodiment, including power supply, including inspection
Survey module 1 and short circuit handover module 2；Detection module 1 is coupled to power supply to receive supply voltage output detections signal；Short circuit is cut
Die change block 2 is coupled to detection module 1 to receive detection signal and to return with the power supply cutting off anti-riot mosaic screen corresponding to detection signal
Road；When the current supply circuit that detection module 1 detects display screen is short-circuited, short circuit handover module 2 cuts off the power supply of display screen
Loop.
As it is shown in figure 1, detection module 1 is audion Q, audion Q uses PNP type triode, short circuit handover module 2 to include
Partial pressure unit 21, control unit 22 and trigger element 23, partial pressure unit 21 is resistance R2 and resistance R3 dividing potential drop, and control unit 22 is
IGCT V, trigger element 23 is relay K M1, and the first indicating member 3 is LED 1, and the second indicating member 4 is for sending out
Optical diode LED2.
As it is shown in figure 1, one end of power supply VCC and switch S is connected, the other end of switch S and the sun of LED 3
Pole connects, and the negative electrode of LED 3 is connected with one end of resistance R1, the other end of resistance R1 and the normally closed electric shock of relay
One end of KM1-1 connects, and the other end of relay normally closed electric shock KM1-1 is connected with the anode of LED 1, and luminous two
The negative electrode of pole pipe LED1 is connected with one end of mosaic screen.The junction point of switch S and resistance R1 is connected with the emitting stage of audion Q,
Resistance R1 is connected with the base stage of audion Q with the junction point of LED 3, the colelctor electrode of audion Q and relay K M1
One end connect, the other end of relay K M1 is connected with the anode of IGCT V, the negative electrode of IGCT V with GND be connected.Three poles
Pipe Q is connected with one end of resistance R2 with the junction point of relay K M1, and the other end of resistance R2 is connected with one end of resistance R3, electricity
The other end of resistance R3 is connected with ground GND, and the junction point of resistance R2 and resistance R3 is connected with the control pole of IGCT V, light-emitting diodes
The negative electrode of pipe LED3 also one end with relay normally open electric shock KM1-2 is connected, the other end of relay normally open electric shock KM1-2 with send out
The anode of optical diode LED2 connects, and the negative electrode of LED 2 is connected with the junction point of relay K M1 with resistance R2, continuous
Stream diode D and the inverse parallel of relay K M1.
As it is shown in figure 1, the other end of display screen is connected with the negative electrode of LED 1, the other end of mosaic screen with continue
One end of electrical equipment normally closed electric shock KM1-3 connects, and the other end of relay normally closed electric shock KM1-3 is connected with ground GND.
Work process: when display screen normally works, electric current from power supply VCC flow to switch S after, then flow to resistance R1, because of
Base stage for audion Q receives high level, so audion Q is not turned on, and luminous relay after LED 3 conducting
Normally closed electric shock KM1-1 must not be electric, and the state therefore remained closed, now LED 1 turns on luminescence.When display screen is short
Lu Shi, the base stage of audion Q receives low level, now three grades of dry Q conductings, and voltage is given after resistance R3 dividing potential drop through resistance R2
IGCT V, now relay K M1 is both turned on IGCT V, and relay normally closed electric shock KM1-1 disconnects, and relay normally open gets an electric shock
KM1-2 closes, and LED 2 turns on, and now the relay normally closed electric shock KM1-3 in the current supply circuit of display screen obtains electric
Disconnect, make display screen be protected.When switch S stirs and connects in ground GND, audion Q is not in conducting, now relay K M1
Dead electricity, relay normally closed electric shock dead electricity KM1-1 closes, and relay normally open electric shock civil power KM1-2 disconnects, the normally closed electric shock of relay
KM1-3 dead electricity closes, and after maintenance completes, then is stirred at power supply VCC by switch S.
Embodiment two: as in figure 2 it is shown, with the addition of wireless transmit/receive units 5, wireless transmit/receive units on the basis of embodiment one
5 include emission part 51, acceptance division 52 and warning portion 53.Emission part 51 uses power supply E and emitter, and acceptance division 52 uses and receives
Device, warning portion 53 is sound components, and sound components can be buzzer, speaker etc., and the present embodiment uses electric bell HA.
As shown in Figure 1, 2, power supply VCC is connected with one end of switch S, the other end of switch S and LED 3
Anode connects, and the negative electrode of LED 3 is connected with one end of resistance R1, and the other end of resistance R1 is normally closed with relay to be touched
One end of electricity KM1-1 connects, and the other end of relay normally closed electric shock KM1-1 is connected with the anode of LED 1, luminous
The negative electrode of diode (LED) 1 is connected with one end of mosaic screen.The junction point of switch S and resistance R1 and the transmitting cascade of audion Q
Connecing, resistance R1 is connected with the base stage of audion Q with the junction point of LED 3, the colelctor electrode of audion Q and relay
One end of KM1 connects, and the other end of relay K M1 is connected with the anode of IGCT V, and the negative electrode of IGCT V is connected with ground GND.
Audion Q is connected with one end of resistance R2 with the junction point of relay K M1, and the other end of resistance R2 connects with one end of resistance R3
Connecing, the other end of resistance R3 is connected with ground GND, and the junction point of resistance R2 and resistance R3 is connected with the control pole of IGCT V, luminous
The negative electrode of diode (LED) 3 also one end with relay normally open electric shock KM1-2 is connected, the other end of relay normally open electric shock KM1-2
Being connected with the anode of LED 2, the negative electrode of LED 2 connects with the junction point of relay K M1 with resistance R2
Connect, sustained diode and the inverse parallel of relay K M1.One end of emitter is connected with the positive pole of power supply E, the negative pole of power supply E with continue
One end of electrical equipment normally opened electric shock KM1-4 connects, and the other end of relay normally open electric shock KM1-4 is connected with one end of resistance R4.Connect
The one end receiving device is connected with power supply VCC, and the other end of receptor is connected with one end of electric bell HA, the other end of electric bell HA and ground
GND connects.
As it is shown in figure 1, one end of display screen is connected with power supply VCC, the other end of mosaic screen and the normally closed electric shock of relay
One end of KM1-3 connects, and the other end of relay normally closed electric shock KM1-3 is connected with ground GND.
Work process: when display screen normally works, electric current from power supply VCC flow to switch S after, then flow to resistance R1, because of
Base stage for audion Q receives high level, so audion Q is not turned on, and luminous relay after LED 3 conducting
Normally closed electric shock KM1-1 must not be electric, and the state therefore remained closed, now LED 1 turns on luminescence, and emitter does not leaves
Beginning work.When display screen short circuit, the base stage of audion Q receives low level, now three grades of dry Q conductings, and voltage is through resistance
Giving IGCT V after R2 and resistance R3 dividing potential drop, now relay K M1 is both turned on IGCT V, and relay normally closed electric shock KM1-1 breaks
Opening, relay normally open electric shock KM1-2 closes, and LED 2 turns on, now the relay in the current supply circuit of display screen
Normally closed electric shock KM1-3 obtains electrically disconnected, makes display screen be protected.When switch S stirs and connects in ground GND, audion Q is not leading
Logical, now relay K M1 dead electricity, relay normally closed electric shock dead electricity KM1-1 closes, and relay normally open electric shock civil power KM1-2 disconnects,
Relay normally closed electric shock KM1-3 dead electricity closes, and relay normally open electric shock KM1-4 closes, and emitter obtains electric, starts to send and launches letter
Number, after receptor receives transmitting signal, output reception signal starts to ring a bell to electric bell HA, electric bell HA and sends sound, reminds work
Making personnel, display screen has short circuit, after maintenance completes, then is stirred at power supply VCC by switch S.
Embodiment three: point out not in the drawings, arranges one layer of rupture pressure disc on a display screen so that the compressive resistance of screen increases
By force, defining according to car2100 authority, rupture pressure disc is installed in pressure vessel top to prevent the metallic film of container explosion, is one
Plant safety device.Also known as burst disk or rupture disk.When container inner pressure exceedes certain limit, thin film is first broken through, thus can
To reduce the pressure in container, it is to avoid blast.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. an explosion-proof mosaic screen, including power supply and some display screens, is characterized in that: include detection module (1) and short circuit switching
Module (2)；
Described detection module (1) is coupled to power supply to receive supply voltage output detections signal；
Described short circuit handover module (2) is coupled to detection module (1) to receive detection signal and corresponding to detection signal to cut off
The current supply circuit of display screen；
When described detection module (1) detects that the current supply circuit of display screen is short-circuited, described short circuit handover module (2) is cut off
The current supply circuit of display screen.
The explosion-proof mosaic screen of one the most according to claim 1, is characterized in that: described power supply has been also coupled to the first indicating member
(3), described first indicating member (3) is to accept power supply signal and in response to power supply signal to realize instruction.
The explosion-proof mosaic screen of one the most according to claim 1, is characterized in that: described detection module (1) is audion, described
The base stage of audion is in order to detect the voltage signal of electric power loop and to respond this voltage signal to realize on or off.
The explosion-proof mosaic screen of one the most according to claim 3, is characterized in that: described short circuit handover module (2) includes dividing potential drop
Unit (21), control unit (22) and trigger element (23)；
Described partial pressure unit (21) is coupled to audion to accept detection signal and to export voltage division signal；
Described control unit (22) is coupled to partial pressure unit (21) to receive voltage division signal and to export control signal；
Described trigger element (23) is coupled to control unit (22) to accept control signal and in response to control signal to realize showing
The cut-out of the current supply circuit of display screen.
The explosion-proof mosaic screen of one the most according to claim 4, is characterized in that: described trigger element (23) is further coupled to second
Indicating member (4), described second indicating member (4) is to accept to trigger signal and in response to starting signal to realize instruction.
The explosion-proof mosaic screen of one the most according to claim 4, is characterized in that: described trigger element (23) is relay.
The explosion-proof mosaic screen of one the most according to claim 6, is characterized in that: also reverse parallel connection one afterflow two of described relay
Pole is managed.
The explosion-proof mosaic screen of one the most according to claim 4, is characterized in that: described trigger element (23) has been also coupled to wireless
Transmit-Receive Unit (5), described wireless transmit/receive units (5) triggers signal and in response to triggering signal to realize alarm to receive.
The explosion-proof mosaic screen of one the most according to claim 8, is characterized in that: described wireless transmit/receive units (5) includes launching
Portion (51), acceptance division (52) and warning portion (53)；
Described emission part (51) is coupled to trigger element (23) to receive starting signal and to export transmitting signal；
Described receiving portion is coupled to emission part (51) and accepts signal to receive transmitting signal output；
Described warning portion (53) is coupled to acceptance division (52) to accept to receive signal and in response to receiving signal to realize alarm.
The explosion-proof mosaic screen of one the most according to claim 9, is characterized in that: described warning portion (53) uses sound components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620545745.0U CN205666606U (en) | 2016-06-04 | 2016-06-04 | Explosion -proof concatenation screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620545745.0U CN205666606U (en) | 2016-06-04 | 2016-06-04 | Explosion -proof concatenation screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666606U true CN205666606U (en) | 2016-10-26 |
Family
ID=57157525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620545745.0U Expired - Fee Related CN205666606U (en) | 2016-06-04 | 2016-06-04 | Explosion -proof concatenation screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117748405A (en) * | 2024-02-21 | 2024-03-22 | 成都凯天电子股份有限公司 | Short-circuit protection device for heating wire of airspeed tube of aircraft |
-
2016
- 2016-06-04 CN CN201620545745.0U patent/CN205666606U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117748405A (en) * | 2024-02-21 | 2024-03-22 | 成都凯天电子股份有限公司 | Short-circuit protection device for heating wire of airspeed tube of aircraft |
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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: 20161026 Termination date: 20190604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |