CN212907019U - Power supply control circuit, adapter plate, light-emitting diode box and display screen - Google Patents
Power supply control circuit, adapter plate, light-emitting diode box and display screen Download PDFInfo
- Publication number
- CN212907019U CN212907019U CN202021721578.3U CN202021721578U CN212907019U CN 212907019 U CN212907019 U CN 212907019U CN 202021721578 U CN202021721578 U CN 202021721578U CN 212907019 U CN212907019 U CN 212907019U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- power supply
- emitting diode
- light
- adapter plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a power supply control circuit, a patch panel, a light emitting diode box body and a display screen, wherein, the power supply control circuit comprises a connector interface, a power supply interface and a magnetic control module which are arranged on the patch panel, and the magnetic control module is respectively connected with the connector interface and the power supply interface; the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the closed state is switched to the open state under the action of the external magnetic signal, cutting off the circuit between the connector interface and the power supply interface. The power supply control circuit is suitable for an application scene that the LED lamp panel is replaced by using an external magnetic part, can only cut off the power of the LED lamp panel to be replaced, does not need to cut off the power of all the LED lamp panels on the adapter plate, can be detached or installed, and effectively ensures the service life of the LED lamp panel.
Description
Technical Field
The utility model relates to a display screen field especially relates to power supply control circuit, keysets, emitting diode box and display screen.
Background
The display screen in the prior art is formed by splicing a plurality of light-emitting diode box bodies. A led box generally includes a led lamp panel (i.e., a display module), an adapter plate (i.e., a HUB plate), and a power supply; wherein, female connector on the emitting diode lamp plate is connected with the male connector on the HUB board. The adapter plate is given to the direct power supply of power, and the connector between rethread emitting diode lamp plate and the HUB board indirectly gives the power supply of emitting diode lamp plate. In the prior art, when the light-emitting diode lamp panel needs to be replaced, the light-emitting diode lamp panel is connected with the HUB board in a hot plugging mode. When the hot plug mode is adopted, the service life of the LED lamp panel can be seriously influenced if the LED lamp panel is electrified and the conditions of poor contact of a connector, disordered signals and the like occur.
Therefore, how to reduce the influence on the service life of the light emitting diode lamp panel when the light emitting diode lamp panel is installed is a problem which needs to be solved urgently.
Disclosure of Invention
In view of the deficiencies of the prior art, an object of the present application is to provide an adapter plate, a light emitting diode box and a display screen, which aims to solve the problem that the service life of the light emitting diode lamp panel is seriously affected by the poor contact of the connector, the disorder of signals and other conditions when the light emitting diode is installed in a hot plug mode in the prior art.
A power supply control circuit comprising:
the magnetic control module is respectively connected with the connector interface and the power supply interface;
the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the closed state is switched to the open state under the action of the external magnetic signal, cutting off the circuit between the connector interface and the power supply interface.
The power supply control circuit is usually in a closed state by adding a magnetic control module, and is switched into an open state when the magnetic control module senses certain magnetic strength, so that the circuit between the connector interface and the power supply interface is cut off. The power supply control circuit is suitable for an application scene that the light-emitting diode lamp panel is replaced by using the external magnetic part, can only ensure that the light-emitting diode lamp panel to be replaced is powered off, does not need to ensure that all light-emitting diode lamp panels on the adapter plate are powered off, and can be detached or installed for the purpose of the light-emitting diode lamp panel, thereby avoiding the problems of poor contact or power signal crosstalk to other signals and the like when the connector between the adapter plate and the light-emitting diode lamp panel is hot plugged, and effectively ensuring the service life of the light-emitting diode lamp panel.
Optionally, the magnetic control module is a magnetic switch.
Optionally, the magnetic switch includes: and a magnetic induction contact.
Optionally, the magnetic control module includes:
a magnetic detection unit, a switch control unit and a switch unit;
the magnetic detection unit is connected with the switch unit through the switch control unit;
the magnetic detection unit is used for sending a protection signal to the switch control unit when detecting the external magnetic signal;
and the switch control unit is used for controlling the switch unit to be switched from a closed state to an open state after receiving the protection signal sent by the magnetic detection unit.
Based on the same inventive concept, the utility model also provides an adapter plate, include: a power supply control circuit as described above.
Due to the power supply control circuit in the adapter plate, a circuit between the connector interface and the power supply interface can be cut off under the action of an external magnetic signal. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like when being hot plugged are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
Based on the same inventive concept, the utility model also provides a light-emitting diode box body, which comprises a box body, a light-emitting diode lamp panel and an iron frame for fixing the light-emitting diode lamp panel; it is characterized by also comprising: the adapter plate is arranged on the box body;
the adapter plate is connected with the LED lamp panel through a connector.
Due to the adapter plate in the light-emitting diode box body, a circuit between the connector interface and the power supply interface on the adapter plate is cut off under the action of an external magnetic signal, so that the light-emitting diode lamp panel in the light-emitting diode box body cannot be supplied with power. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like during hot plugging are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
Optionally, the connector includes a male connector disposed on the adapter plate and a female connector disposed on the led lamp panel; or, the connector comprises a female connector arranged on the adapter plate and a male connector arranged on the light-emitting diode lamp panel.
Optionally, a magnetic part is arranged on the adapter plate; the adapter plate is connected with the iron frame through the magnetic piece.
Optionally, at least two light emitting diode lamp panels are arranged on the adapter plate.
Based on the same inventive concept, the utility model also provides a display screen, its characterized in that is equipped with a plurality of emitting diode boxes as above on the display screen.
Because the light-emitting diode box body in the display screen can realize that the circuit between the connector interface and the power supply interface on the adapter plate is cut off under the action of an external magnetic signal, the light-emitting diode lamp panel in the light-emitting diode box body cannot be supplied with power. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like during hot plugging are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a power supply control circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply control circuit according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power supply control circuit according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light emitting diode box according to another embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a light emitting diode case according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display screen according to another embodiment of the present invention;
description of reference numerals:
101-a connector interface; 102-a magnetic control module; 103-a power supply interface; 1021-a magnetic switch; 1022-a magnetic detection unit; 1023-a switch control unit; 1024 — a switching unit; 3-light emitting diode lamp panel; 4-a patch panel; 5-a connector; 51-male connector; 52-female connector; 6-light emitting diode box body; 7-a display screen; 8-magnetic element.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The display screen in the prior art is formed by splicing a plurality of light-emitting diode box bodies. A led box generally includes a led lamp panel (i.e., a display module), an adapter plate (i.e., a HUB plate), and a power supply; wherein, female connector on the emitting diode lamp plate is connected with the male connector on the HUB board. The adapter plate is given to the direct power supply of power, and the connector between rethread emitting diode lamp plate and the HUB board indirectly gives the power supply of emitting diode lamp plate. In the prior art, when the light-emitting diode lamp panel needs to be replaced, the light-emitting diode lamp panel is connected with the HUB board in a hot plugging mode. When the hot plug mode is adopted, the service life of the LED lamp panel can be seriously influenced if the LED lamp panel is electrified and the conditions of poor contact of a connector, disordered signals and the like occur.
Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.
The utility model discloses an embodiment:
in this embodiment, referring to fig. 1, a power supply control circuit is provided, which includes:
the adapter plate comprises a connector interface 101, a power supply interface 103 and a magnetic control module 102, wherein the connector interface 101 and the power supply interface 103 are arranged on the adapter plate, and the magnetic control module 102 is respectively connected with the connector interface 101 and the power supply interface 103;
the magnetic control module 102 is configured to conduct a circuit between the connector interface 101 and the power supply interface 103 when the magnetic control module is in a closed state; and when the closed state is switched to the open state by the external magnetic signal, the circuit between the connector interface 101 and the power supply interface 103 is cut off.
For the magnetron module 102, the structure includes, but is not limited to, the following forms:
in some embodiments, with reference to fig. 2, the magnetron module 102 is a magnetic switch 1021.
The magnetic switch 1021 is generally a normally closed reed switch, and is a passive electronic switch element with contacts, and has the advantages of simple structure, small volume, and convenient control. The magnetic switch 1021 includes a magnetic inductive contact that moves a small iron plate within the contact to open when the magnetic inductive contact is proximate to a magnet, and closes immediately when the magnetic inductive contact is otherwise removed. Meanwhile, the magnet performance materials of the magnet switch 1021 include, but are not limited to: rubber magnet, sintered permanent ferrite, neodymium iron boron strong magnet.
It should be noted that, when an external magnetic member is close to the adapter plate, for example, the external magnetic member is 3cm away from the adapter plate, the magnetic switch on the adapter plate senses the magnetic strength of the external magnetic member, and the magnetic switch is immediately switched from the closed state to the open state. And then, if the distance between the external magnetic piece and the adapter plate is closer and closer, the magnetic switch is still in an open circuit state. When the magnetic part starts to be far away from the adapter plate and the distance between the magnetic part and the adapter plate exceeds 3cm, the magnetic switch is switched from an open state to a closed state. The external magnetic member includes, but is not limited to, a bar magnet, a shaped magnet, a cylindrical magnet, and a ring magnet. In addition, external magnetic members with different strength performances or magnet switches made of different magnet performance materials can be selected according to actual conditions, so that the maximum distance value required to be met by the magnetic member and the adapter plate when the magnetic switch is in a switching state can be adjusted, and the maximum distance value comprises but is not limited to 1cm, 2cm, 3cm and 4 cm.
In some embodiments, referring to fig. 3, the magnetron module 102 includes:
a magnetic detection unit 1022, a switch control unit 1023, a switch unit 1024;
the magnetic detection unit 1022 is connected to the switch unit 1024 through the switch control unit 1023;
the magnetic detection unit 1022 is configured to send a protection signal to the switch control unit 1023 when the external magnetic signal is detected;
the switch control unit is configured to control the switch unit 1024 to switch from a closed state to an open state after receiving the protection signal sent by the magnetic detection unit 1022.
It should be noted that, when the magnetic control module is a magnetic switch, the magnetic switch immediately disconnects the circuit once detecting an external magnetic signal. In order to make the magnetic control module work more flexibly, the magnetic detection unit can also detect whether the light emitting diode lamp panel is installed at the position when detecting an external magnetic signal, and if the light emitting diode lamp panel is detected to be installed, the light emitting diode lamp panel at the position needs to be detached at the moment, the magnetic detection unit does not need to send a protection signal to the switch control unit, and the switch unit is still in a closed state. On the contrary, when the magnetic detection unit detects an external magnetic signal, the magnetic detection unit also detects that the light-emitting diode lamp panel is not installed at the position, and the magnetic detection unit needs to send a protection signal to the switch control unit to enable the switch control unit to control the switch unit to be switched from a closed state to an open state so as to avoid the power supply for the light-emitting diode lamp panel when the connector between the adapter plate and the light-emitting diode lamp panel is in poor contact at the moment, and the light-emitting diode lamp panel can be effectively protected.
In the power supply control circuit provided by this embodiment, by adding a magnetic control module, the magnetic control module is usually in a closed state, and when the magnetic control module senses a certain magnetic strength, the magnetic control module is switched to an open state, so that a circuit between the connector interface and the power supply interface is cut off. The power supply control circuit is suitable for an application scene that the light-emitting diode lamp panel is replaced by using the external magnetic part, can only ensure that the light-emitting diode lamp panel to be replaced is powered off, does not need to ensure that all light-emitting diode lamp panels on the adapter plate are powered off, and can be detached or installed for the purpose of the light-emitting diode lamp panel, thereby avoiding the problems of poor contact or power signal crosstalk to other signals and the like when the connector between the adapter plate and the light-emitting diode lamp panel is hot plugged, and effectively ensuring the service life of the light-emitting diode lamp panel.
The utility model discloses another embodiment:
the embodiment provides an adapter plate, which comprises a power supply control circuit; the power supply control circuit includes: the magnetic control module is arranged between the connector interface and the power supply interface on the adapter plate; the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the closed state is switched to the open state under the action of the external magnetic signal, cutting off the circuit between the connector interface and the power supply interface. As described above, the details are not repeated herein.
The power supply control circuit in the adapter board of the above embodiment can cut off the circuit between the connector interface and the power supply interface under the action of the external magnetic signal. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like when being hot plugged are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
The utility model discloses another embodiment:
the embodiment provides a light-emitting diode box body, which comprises a box body, a light-emitting diode lamp panel and an iron frame for fixing the light-emitting diode lamp panel; still including setting up the keysets on the box body, the keysets passes through the connector to be connected with the emitting diode lamp plate. The adapter plate comprises a power supply control circuit; and the power supply control circuit includes: the magnetic control module is respectively connected with the connector interface and the power supply interface; the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the closed state is switched to the open state under the action of the external magnetic signal, cutting off the circuit between the connector interface and the power supply interface. As described above, the details are not repeated herein.
In some embodiments, the adapter plate is further provided with a plurality of magnetic members, and the number, size and position of the magnetic members can be reasonably set according to actual requirements. At this time, the adapter plate is connected with the iron frame through the magnetic piece. When the light-emitting diode lamp panel is installed, the magnetic force of the iron frame for fixing the light-emitting diode lamp panel can be further applied by means of the magnetic piece, so that the speed of installing the light-emitting diode lamp panel is increased.
In some embodiments, at least two led lamp panels are disposed on the interposer. The number of the light emitting diodes fixed on the adapter plate is not limited to 2, 4 or 8, and the light emitting diodes can be reasonably arranged according to actual requirements.
For better understanding of the present invention, a specific led box is illustrated below with reference to fig. 4 and 5:
as shown in fig. 4, the light emitting diode box provided by this embodiment includes an adapter plate 4 fixed on the box body, two light emitting diodes 3, and an iron frame (not shown in the figure) for fixing the light emitting diodes 3, wherein two male connectors are arranged on the adapter plate 4, and a female connector is arranged on each light emitting diode 3. The female connector on the light-emitting diode 3 is butted with the male connector on the adapter plate 4, so that the light-emitting diode 3 is fixed on the light-emitting diode box body. Fig. 5 is a schematic diagram of a specific circuit after a single led lamp panel is connected to an adapter plate; the female connector on the light emitting diode lamp panel 3 and the male connector on the adapter plate 4 form a connector 5.
It can be understood that a male connector or a female connector may be disposed on the adapter plate, and at this time, the female connector or the male connector capable of being matched with the adapter plate is disposed on the led lamp panel.
It can be understood that, because the light emitting diode lamp plate is fixed in the chase, then can break away from the adapter plate on the box body with light emitting diode lamp plate and chase together with the help of the magnetic attraction of outside magnetic part to the chase to reach the purpose of changing the light emitting diode lamp plate.
When the light emitting diode 3 is replaced by magnetic attraction, the magnetic member is used to approach the light emitting diode 3, and the magnetic member is also close to the HUB board 4. When the distance between the magnetic part and the HUB board 4 is not limited to 3cm, the magnetic force of the magnetic part on the magnetic switch 1021 on the HUB board 4 can make the magnetic switch 1021 be switched from a closed state to an open state, and the power supply control circuit in the light-emitting diode box is in a power-off state. Meanwhile, the magnetic force of the magnetic part on the iron frame on the LED lamp panel 3 is utilized to separate the LED lamp panel 3 from the HUB board 4. Because the LED lamp panel which needs to be maintained is sucked out under the condition that the LED box body is powered off, the condition that the power supply of the connector is in poor contact or the power supply signal interferes other signals can not occur. Afterwards, the magnetic part is far away from the HUB board 4, and when the distance between the magnetic part and the HUB board 4 exceeds 3cm, the magnetic switch 1021 is switched to a closed state from an open circuit state, and a power supply control circuit in the light-emitting diode box body is recovered to a normal working state.
Then, when the led 3 needs to be mounted, the magnetic member is close to the led 3, and when the magnetic member is still spaced from the HUB board 4 by not limited to 3cm, the magnetic force of the magnetic member on the magnetic switch 1021 on the HUB board 4 can switch the magnetic switch 1021 from the closed state to the open state. At the same time, the light emitting diodes 3 are inserted into the HUB board 4. Because the LED lamp panel 3 which needs to be replaced is transferred to the HUB board 4 under the condition that the LED box body is powered off, the condition that the power supply of the connector is poor in contact or other signals are interfered by power supply signals can not occur. Afterwards, the magnetic part is far away from the HUB board 4, and when the distance between the magnetic part and the HUB board 4 exceeds 3cm, the magnetic switch 1021 is switched to a closed state from an open circuit state, and a power supply control circuit in the light-emitting diode box body is recovered to a normal working state.
The adapter plate in the light-emitting diode box body of the embodiment realizes that a circuit between the connector interface and the power supply interface on the adapter plate is cut off under the action of an external magnetic signal, so that the light-emitting diode lamp panel in the light-emitting diode box body cannot be supplied with power. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like during hot plugging are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
The utility model discloses another embodiment:
referring to fig. 6, the present embodiment provides a display screen 7, wherein a plurality of led boxes 6 are disposed on the display screen 7. Each LED box body 6 comprises a box body, an LED lamp panel 3 and an adapter plate 4; the box body is connected with the LED lamp panel 3 through the adapter plate 4. As an example, the adapter plate 4 is connected with the led lamp panel 3 through a connector; the connector comprises a male connector 51 arranged on the adapter plate 4 and a female connector 52 arranged on the LED lamp panel.
Wherein, the adapter plate 4 comprises a power supply control circuit; and the power supply control circuit includes: the magnetic control module is respectively connected with the connector interface and the power supply interface; the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the connector interface is switched from the closed state to the open state under the action of an external magnetic signal (such as the magnetic force of the magnetic member 8), the circuit between the connector interface and the power supply interface is cut off. As described above, the details are not repeated herein.
The light-emitting diode box body in the display screen of the embodiment can cut off a circuit between the connector interface and the power supply interface on the adapter plate under the action of an external magnetic signal, so that the light-emitting diode lamp panel in the light-emitting diode box body cannot be supplied with power. When the light-emitting diode lamp panel is replaced by means of the external magnetic part, the light-emitting diode lamp panel to be replaced can be powered off only, all the light-emitting diode lamp panels on the adapter plate are not required to be powered off, and the light-emitting diode lamp panel can be detached or installed, so that the problems that the connector between the adapter plate and the light-emitting diode lamp panel is poor in contact or power signals cross other signals and the like during hot plugging are avoided, and the service life of the light-emitting diode lamp panel is effectively guaranteed.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A power supply control circuit, comprising:
the magnetic control module is respectively connected with the connector interface and the power supply interface;
the magnetic control module is used for conducting a circuit between the connector interface and the power supply interface when the magnetic control module is in a closed state; and when the closed state is switched to the open state under the action of the external magnetic signal, cutting off the circuit between the connector interface and the power supply interface.
2. The power supply control circuit of claim 1 wherein said magnetic control module is a magnetic switch.
3. The power supply control circuit of claim 2 wherein the magnetic switch comprises: and a magnetic induction contact.
4. The power supply control circuit of claim 1, wherein the magnetron module comprises:
a magnetic detection unit, a switch control unit and a switch unit;
the magnetic detection unit is connected with the switch unit through the switch control unit;
the magnetic detection unit is used for sending a protection signal to the switch control unit when detecting the external magnetic signal;
the switch control unit is used for controlling the switch unit to be switched from a closed state to an open state after receiving the protection signal sent by the switch control unit.
5. An interposer, comprising: the power supply control circuit of any one of claims 1-4.
6. A light-emitting diode box body comprises a box body, a light-emitting diode lamp panel and an iron frame for fixing the light-emitting diode lamp panel; it is characterized by also comprising: the interposer of claim 5 disposed on the case body;
the adapter plate is connected with the LED lamp panel through a connector.
7. The LED housing of claim 6 wherein the connectors comprise a male connector disposed on the adapter plate and a female connector disposed on the LED light panel;
alternatively, the first and second electrodes may be,
the connector is including setting up in female connector on the keysets with set up in public connector on the emitting diode lamp plate.
8. The LED housing as claimed in claim 6, wherein the adapter plate is provided with a magnetic member; the adapter plate is connected with the iron frame through the magnetic piece.
9. The LED box of claim 6 wherein the adapter plate has at least two LED panels thereon.
10. A display screen, wherein a plurality of light emitting diode housings as claimed in any one of claims 6 to 9 are provided on the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721578.3U CN212907019U (en) | 2020-08-18 | 2020-08-18 | Power supply control circuit, adapter plate, light-emitting diode box and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021721578.3U CN212907019U (en) | 2020-08-18 | 2020-08-18 | Power supply control circuit, adapter plate, light-emitting diode box and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212907019U true CN212907019U (en) | 2021-04-06 |
Family
ID=75247361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021721578.3U Active CN212907019U (en) | 2020-08-18 | 2020-08-18 | Power supply control circuit, adapter plate, light-emitting diode box and display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212907019U (en) |
-
2020
- 2020-08-18 CN CN202021721578.3U patent/CN212907019U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220342051U (en) | Multipurpose mobile power supply and assembly of multipurpose mobile power supply and electric tool | |
| CN105552673A (en) | Connector, safety control device, charging device and mobile device | |
| CN106486742A (en) | Electronic installation and its antenna and the method with the reception of this electronic installation or transmission signal | |
| CN212907019U (en) | Power supply control circuit, adapter plate, light-emitting diode box and display screen | |
| KR101372891B1 (en) | Electric outlet apparatus embodied with function of alarming | |
| CN103247475B (en) | Constant-magnetic maintaining AC contactor control circuit and control method thereof | |
| CN102025282B (en) | Power control circuit and electronic device provided with same | |
| CN210518030U (en) | Motor controller cover opening protection device | |
| CN103425220A (en) | Electric energy control module, electric energy control device and electric energy control equipment | |
| CN207572744U (en) | A kind of remote-control apparatus of magnetic adsorption type high-voltage ring network switch cabinet | |
| CN203481578U (en) | Remote-control type power switching device | |
| CN103500906A (en) | Remote control type power supply changeover device | |
| CN213184836U (en) | Power line on-off device based on server power-on | |
| CN101740945A (en) | Easy-to- disconnected type safety connector system employing magnetic force to maintain connection and corresponding method thereof | |
| CN203313498U (en) | Emergency control circuit | |
| CN208488837U (en) | A kind of wireless alarmer for monitoring room power supply | |
| CN103914002A (en) | Power supply control system | |
| CN102842447B (en) | A kind of electric mechanical combination switch device | |
| CN205725170U (en) | Wireless charging switchs | |
| CN205267933U (en) | Control circuit and mixer of mixer | |
| CN102053574B (en) | Output and input device environment monitoring system with same | |
| CN105576810A (en) | Mobile electronic equipment power supply system and mobile electronic equipment | |
| CN206349584U (en) | A kind of smart jack | |
| CN205354952U (en) | Magnetic drive switch of anti shake | |
| CN205792620U (en) | Motherboard and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |