CN203690914U - Power supply reversal connection protective device in LED display screen control system - Google Patents
Power supply reversal connection protective device in LED display screen control system Download PDFInfo
- Publication number
- CN203690914U CN203690914U CN201420062254.1U CN201420062254U CN203690914U CN 203690914 U CN203690914 U CN 203690914U CN 201420062254 U CN201420062254 U CN 201420062254U CN 203690914 U CN203690914 U CN 203690914U
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- power supply
- support bar
- light
- emitting diode
- hollow cavity
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Abstract
The utility model discloses a power supply reversal connection protective device in an LED display screen control system. The power supply reversal connection protective device comprises a power supply incoming end. The power supply incoming end is sleeved by a power plug. The power plug is internally provided with a hollow cavity. The hollow cavity is internally provided with a spring. A top end of the spring is provided with a support bar. A top part of the hollow cavity is provided with a through hole, and the support bar can move in the through hole. The support bar is provided with a spacing groove. The hollow cavity is internally provided with a magnetic rod fitting with the spacing groove. A bottom part of the magnetic rod is provided with an electromagnet coil. The power supply incoming end is provided with a plurality of LED electric appliances arranged in parallel through a fuse. Each LED electric appliance is connected with a protective diode in series. The power supply incoming end is also connected with a display loop and a release loop. The power supply reversal connection protective device solves disadvantaged in the prior art, and achieves automatic prompting and automatic power off in case of power supply reversal connection.
Description
Technical field
The utility model relates to LED electrical appliance voltage detecting technical field, the reverse power connection protective device in especially a kind of LED display control system.
Background technology
In known LED display control system, just simply by the both positive and negative polarity of power input terminal with after the electronic device that connects link together.Because LED display control system is used DC power supply, need to distinguish positive pole and negative pole.As both positive and negative polarity connects instead, will burn out electronic device.And operating personnel when mounted, often there will be power supply to connect anti-situation.
utility model content
The technical problems to be solved in the utility model is to provide the reverse power connection protective device in a kind of LED display control system, can solve the deficiencies in the prior art, automatic-prompting and auto-breaking when reverse power connection.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
Reverse power connection protective device in a kind of LED display control system, comprise power access end, on power access end, be socketed with attaching plug, in attaching plug, be provided with hollow cavity, be provided with spring in hollow cavity, the top of spring is provided with support bar, hollow cavity top is provided with the through hole moving for support bar, on support bar, be provided with stopper slot, be provided with the magnetism stick matching with stopper slot in hollow cavity, the bottom of magnetism stick is provided with electromagnet coil, power access end is connected with by fuse the LED electrical appliance that several are arranged in parallel, each LED electrical appliance is in series with a protection diode, the positive pole of protection diode is connected to fuse, the negative pole of protection diode is connected to LED electrical appliance, power access end is also connected with show circuit, show circuit comprises current-limiting resistance, current-limiting resistance is connected with the first light-emitting diode and the second light-emitting diode that are arranged in parallel, the first light-emitting diode is oppositely connected with the second light-emitting diode, power access end is also connected with dropout loop, dropout loop is in series with reversal connection diode, time delay resistance, delay capacitor and electromagnet coil, the negative pole of reversal connection diode is connected to power access end, the positive pole of reversal connection diode is connected to time delay resistance.
As preferably, the material of described support bar is plastics, and the top of support bar is provided with rubber blanket.
As preferably, described the first light-emitting diode and the second light-emitting diode are the light-emitting diode that shows different colours.
The beneficial effect that adopts technique scheme to bring is: the protection diode in the utility model can play cut-off effect in the situation that of reverse power connection, the safety of protection LED electrical appliance.The first light-emitting diode and the second light-emitting diode in the situation that power supply is just connecing with reversal connection, respectively have one luminous, be used for the situation of display power supply positive-negative connected.In the time of the unmanned processing of the long-time reversal connection of power supply, dropout loop, by time delay, makes the charged generation attraction of electromagnet coil, magnetism stick is inhaled to electromagnet coil, discharge support bar, support bar ejects socket by attaching plug under the effect of spring, has realized auto-breaking.Support bar is selected plastics, plays the effect of insulation, and rubber blanket can play the effect of buffer protection socket.
Brief description of the drawings
Fig. 1 is the hardware structure diagram of an embodiment of the utility model.
Fig. 2 is the schematic diagram of control circuit in embodiment of the utility model.
In figure: 1, attaching plug; 2, hollow cavity; 3, spring; 4, support bar; 5, through hole; 6, stopper slot; 7, magnetism stick; 8, rubber blanket; Vcc, power access end; M, electromagnet coil; F, fuse; L, LED electrical appliance; D1, protection diode; D2, the first light-emitting diode; D3, the second light-emitting diode; D4, reversal connection diode; R1, current-limiting resistance; R2, time delay resistance; C, delay capacitor.
Embodiment
With reference to Fig. 1-2, embodiment of the utility model comprises power access end Vcc, on power access end Vcc, be socketed with attaching plug 1, in attaching plug 1, be provided with hollow cavity 2, be provided with spring 3 in hollow cavity 2, the top of spring 3 is provided with support bar 4, hollow cavity 2 tops are provided with the through hole 5 moving for support bar 4, on support bar 4, be provided with stopper slot 6, be provided with the magnetism stick 7 matching with stopper slot in hollow cavity 2, the bottom of magnetism stick 7 is provided with electromagnet coil M, power access end Vcc is connected with by fuse F the LED electrical appliance L that several are arranged in parallel, each LED electrical appliance L is in series with a protection diode D1, the positive pole of protection diode D1 is connected to fuse F, the negative pole of protection diode D1 is connected to LED electrical appliance L, power access end Vcc is also connected with show circuit, show circuit comprises current-limiting resistance R1, current-limiting resistance R1 is connected with the first light-emitting diode D2 and the second light-emitting diode D3 that are arranged in parallel, the first light-emitting diode D2 is oppositely connected with the second light-emitting diode D3, power access end Vcc is also connected with dropout loop, dropout loop is in series with reversal connection diode D4, time delay resistance R2, delay capacitor C and electromagnet coil M, the negative pole of reversal connection diode D4 is connected to power access end Vcc, the positive pole of reversal connection diode D4 is connected to time delay resistance R2.
Material that it should be noted that described support bar 4 is plastics, and the top of support bar 4 is provided with rubber blanket.
In addition, described the first light-emitting diode D2 and the second light-emitting diode D3 are the light-emitting diode that shows different colours.
Operation principle of the present utility model is: the protection diode D1 in the utility model can play cut-off effect in the situation that of reverse power connection, the safety of protection LED electrical appliance L.The first light-emitting diode D2 and the second light-emitting diode D3 in the situation that power supply is just connecing with reversal connection, respectively have one luminous, be used for the situation of display power supply positive-negative connected.In the time of the unmanned processing of the long-time reversal connection of power supply, dropout loop, by time delay, makes the charged generation attraction of electromagnet coil M, magnetism stick 7 is inhaled to electromagnet coil M, discharge support bar 4, support bar 4 ejects socket by attaching plug 1 under the effect of spring 3, has realized auto-breaking.Support bar 4 is selected plastics, plays the effect of insulation, and rubber blanket 8 can play the effect of buffer protection socket.
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the reverse power connection protective device in a LED display control system, it is characterized in that: comprise power access end (Vcc), on power access end (Vcc), be socketed with attaching plug (1), in attaching plug (1), be provided with hollow cavity (2), in hollow cavity (2), be provided with spring (3), the top of spring (3) is provided with support bar (4), hollow cavity (2) top is provided with the through hole (5) mobile for support bar (4), on support bar (4), be provided with stopper slot (6), in hollow cavity (2), be provided with the magnetism stick (7) matching with stopper slot, the bottom of magnetism stick (7) is provided with electromagnet coil (M), power access end (Vcc) is connected with by fuse (F) the LED electrical appliance (L) that several are arranged in parallel, each LED electrical appliance (L) is in series with a protection diode (D1), the positive pole of protection diode (D1) is connected to fuse (F), the negative pole of protection diode (D1) is connected to LED electrical appliance (L), power access end (Vcc) is also connected with show circuit, show circuit comprises current-limiting resistance (R1), current-limiting resistance (R1) is connected with the first light-emitting diode (D2) and the second light-emitting diode (D3) that are arranged in parallel, the first light-emitting diode (D2) is oppositely connected with the second light-emitting diode (D3), power access end (Vcc) is also connected with dropout loop, dropout loop is in series with reversal connection diode (D4), time delay resistance (R2), delay capacitor (C) and electromagnet coil (M), the negative pole of reversal connection diode (D4) is connected to power access end (Vcc), the positive pole of reversal connection diode (D4) is connected to time delay resistance (R2).
2. the reverse power connection protective device in LED display control system according to claim 1, is characterized in that: the material of described support bar (4) is plastics, the top of support bar (4) is provided with rubber blanket (8).
3. the reverse power connection protective device in LED display control system according to claim 1, is characterized in that: described the first light-emitting diode (D2) and the second light-emitting diode (D3) are for showing the light-emitting diode of different colours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420062254.1U CN203690914U (en) | 2014-02-12 | 2014-02-12 | Power supply reversal connection protective device in LED display screen control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420062254.1U CN203690914U (en) | 2014-02-12 | 2014-02-12 | Power supply reversal connection protective device in LED display screen control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690914U true CN203690914U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420062254.1U Expired - Fee Related CN203690914U (en) | 2014-02-12 | 2014-02-12 | Power supply reversal connection protective device in LED display screen control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690914U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039963A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | A kind of protection circuit on automobile electrical equipment wire harness circuit |
| CN111711018A (en) * | 2020-07-02 | 2020-09-25 | 刘世楠 | Waterproof socket of square of multiaspect grafting |
| CN112133243A (en) * | 2020-09-03 | 2020-12-25 | 四川遂宁市利普芯微电子有限公司 | Display device capable of preventing reverse connection breakdown of power supply |
-
2014
- 2014-02-12 CN CN201420062254.1U patent/CN203690914U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039963A (en) * | 2016-02-03 | 2017-08-11 | 东风神宇车辆有限公司 | A kind of protection circuit on automobile electrical equipment wire harness circuit |
| CN111711018A (en) * | 2020-07-02 | 2020-09-25 | 刘世楠 | Waterproof socket of square of multiaspect grafting |
| CN112133243A (en) * | 2020-09-03 | 2020-12-25 | 四川遂宁市利普芯微电子有限公司 | Display device capable of preventing reverse connection breakdown of power supply |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20200212 |