CN217770180U - IPC circuit board and camera - Google Patents
IPC circuit board and camera Download PDFInfo
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- CN217770180U CN217770180U CN202221063255.9U CN202221063255U CN217770180U CN 217770180 U CN217770180 U CN 217770180U CN 202221063255 U CN202221063255 U CN 202221063255U CN 217770180 U CN217770180 U CN 217770180U
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Abstract
The utility model discloses an IPC circuit board and a camera, wherein the IPC circuit board comprises a PCB circuit board, a main chip, a light supplement lamp driver, an LED lamp connector and a power supply module, wherein the main chip is arranged on the PCB circuit board; the light supplement lamp driver is respectively connected with the main chip and the LED lamp connector; the LED lamp connector is connected with the LED lamp; the power supply module is connected with the main chip. The power supply module supplies power for the IPC circuit board of the small yellow structure, the light supplementing lamp drive can achieve light supplementing for different IPCs, the LED lamp connector comprises at least two LED lamp interfaces of the IPCs, different IPCs are connected to the IPC circuit board of the small yellow structure, universality of the IPC circuit board of the small yellow structure is improved, and workload, stock cost, maintenance cost and risk of hardware development are reduced.
Description
Technical Field
The utility model relates to an intelligence house and security protection field especially relate to an IPC circuit board and camera.
Background
With the rapid development of the smart home and the smart security industry, the demand of related IPC (internet protocol Camera) products such as a cloud platform Camera, a gun Camera and a ball Camera begins to increase, each IPC product needs to design a circuit board suitable for the IPC product, if more IPC products are designed, more circuit boards need to be designed, and the workload, the stock cost, the maintenance cost and the risk of hardware development are increased.
Therefore, it is a problem to be solved to design a circuit board that can be used by different IPC products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a IPC circuit board and camera, power module are this IPC circuit board power supply, and the light filling lamp drive can realize the light filling to different IPCs, and wherein LED lamp connector includes the LED lamp interface of two kind at least IPCs, has improved the commonality of IPC circuit board, has reduced the work load, the cost of stock, the maintenance cost and the risk of hardware development.
In order to solve the technical problem, the utility model provides an IPC circuit board, which comprises a PCB circuit board, a main chip, a light supplement lamp driver, an LED lamp connector and a power supply module, wherein the main chip is arranged on the PCB circuit board;
the light supplement lamp driver is respectively connected with the main chip and the LED lamp connector;
the LED lamp connector is connected with the LED lamp and comprises at least two IPC LED lamp interfaces;
the power supply module is connected with the main chip.
Preferably, the power supply module includes:
the power connector is connected with a power supply at one end and is used for accessing the power supply;
the voltage conversion module is connected with the other end of the power connector at the input end and is used for converting a first voltage of the power into a second voltage, and the second voltage is smaller than the first voltage;
and the voltage reduction module is used for reducing the second voltage to be suitable for the voltage of the main chip.
Preferably, the power supply module includes:
the power connector is connected with a power supply at one end and is used for accessing the power supply;
and the voltage reduction module is used for reducing the second voltage of the power supply to a voltage suitable for the main chip.
Preferably, the IPC circuit board further comprises a reset module arranged on the PCB circuit board for controlling the reset of the main chip;
the reset module is connected with the main chip.
Preferably, the reset module includes:
the reset connector is connected with the main chip and is used for realizing the reset function of the main chip, and/or the reset connector is connected with the main chip at one end and external equipment at the other end and is used for realizing the reset function through the reset signal of the external equipment.
Preferably, the IPC circuit board further comprises a network connection module disposed on the PCB circuit board for connecting an external network;
the network connection module is connected with the main chip.
Preferably, the network connection module includes:
a network connector having one end connected to an external network, for accessing the external network;
the network chip is connected with the main chip at one end and used for converting the signal of the external network into a signal suitable for the main chip through protocol conversion and/or converting the signal of the main chip into a signal suitable for the external network through protocol conversion;
and the network transformer is used for realizing level conversion between the external network and the network chip.
Preferably, the IPC circuit board has a length of 52.5mm and a width of 38.1mm.
Preferably, the IPC circuit board further comprises one or more of a TF card socket arranged on the PCB and connected to the main chip, a serial port debug port connected to the main chip, an ICR driver connected to the main chip, an ICR connector connected to the ICR driver, a FLASH chip connected to the main chip, an image sensor connected to the main chip, an MIC connector connected to the main chip, a power amplifier connected to the main chip, a horn connector connected to the power amplifier, a motor driver connected to the main chip, and a motor interface connected to the motor driver.
In order to solve the technical problem, the utility model also provides a camera, include as above-mentioned IPC circuit board.
The application provides an IPC circuit board and a camera, which comprise a PCB circuit board, a main chip, a light supplement lamp driver, an LED lamp connector and a power supply module, wherein the main chip, the light supplement lamp driver, the LED lamp connector and the power supply module are all arranged on the PCB circuit board; the light supplement lamp driver is respectively connected with the main chip and the LED lamp connector; the LED lamp connector is connected with the LED lamp; the power supply module is connected with the main chip. The power supply module supplies power for the IPC circuit board, the light supplementing lamp drive can realize light supplementing for different IPCs, the LED lamp connector comprises at least two types of IPC LED lamp interfaces, different IPCs are connected to the IPC circuit board, universality of the IPC circuit board is improved, and workload, stocking cost, maintenance cost and risk of hardware development are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an IPC circuit board provided by the present invention;
FIG. 2 is a schematic structural diagram of another IPC circuit board provided by the present invention;
FIG. 3 is a schematic structural diagram of another IPC circuit board provided by the present invention;
FIG. 4 is a schematic structural diagram of another IPC circuit board provided by the present invention;
FIG. 5 is a front layout diagram of the main components of an IPC circuit board provided by the present invention;
fig. 6 is a back layout diagram of the main components of the IPC circuit board according to the present invention.
Detailed Description
The utility model discloses a core is that a IPC circuit board is provided, and power module is the power supply of this IPC circuit board, and the light filling lamp drive can realize the light filling to different IPCs, and wherein LED lamp connector includes the LED lamp interface of two kind at least IPCs, has improved the commonality of IPC circuit board, has reduced work load, stock cost, maintenance cost and the risk of hardware development.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an IPC circuit board according to the present invention. The IPC circuit board includes:
the LED lamp driving system comprises a PCB circuit board, a main chip 1, a light supplement lamp driver 2, an LED lamp connector 3 and a power supply module 4, wherein the main chip 1 is arranged on the PCB circuit board;
the light supplement lamp driver 2 is respectively connected with the main chip 1 and the LED lamp connector 3;
the LED lamp connector 3 is connected with the LED lamp, and the LED lamp connector 3 comprises at least two LED lamp interfaces of IPC;
the power supply module 4 is connected to the main chip 1.
To different IPCs, the kind of the LED lamp that carries out light compensation for the camera lens is different, when detecting that ambient light is dark or receiving user's control command, light filling lamp drive 2 drives the LED lamp based on the control of main chip 1, increase the luminance of LED lamp, so as to play the effect of light filling, make IPC also can use at night, different IPCs, the LED lamp that corresponds this IPC all can be connected with LED lamp connector 3, no longer need design the distinctive circuit board to different IPCs, LED lamp connector 3 includes the LED lamp interface of two kinds of at least IPCs, so although the LED lamp that is used for the light filling to different IPCs is different, but these LED lamps all can be connected with LED lamp connector 3, make the commonality of this circuit board improve, the work load of hardware development has been reduced, stock cost, maintenance cost and risk.
Specifically, power supply is realized by the power supply module 4. After different IPCs are connected with the circuit board, the circuit board can provide connection of LED lamps of light filling for the IPCs through the LED lamp connector 3, the specification of the LED lamp connector 3 used in the scheme is 1.25T-9AB,9pin-1.25mm, the LED lamp connector 3 comprises 9 pins, the LED lamp connector 3 with the 9 pins can support an infrared lamp and a traffic indicator light interface of a cloud platform machine, white light lamps and photosensitive interfaces of a dome camera and a gunlock are also supported, and the interfaces of the LED lamp connector 3 specifically comprise: the device comprises a white light lamp positive, a white light lamp negative, an infrared lamp positive, an infrared lamp negative, a 3.3V power supply, a green indicator light, a red indicator light, GND and a photosensitive interface. Wherein photosensitive interface connects photosensitive diode, through the power of photosensitive diode detection ring border light, the light filling lamp drive 2 based on main chip 1's control drive LED lamp is controlled to provide the light filling for the IPC under automatic mode, and under the manual mode, the user can be through the APP of control light filling, and the light filling lamp drive 2 based on main chip 1's control drive LED lamp, manual and automatic all can control the light filling, has improved the flexibility of scheme and user's use experience.
In addition, level control is carried out between the light supplementing lamp driver 2 and the main chip 1 through GPIO, the LED lamp connector 3 is also directly connected with the main chip 1, one circuit can be connected with a photosensitive diode through ADC conversion, and the other circuit is subjected to level control through GPIO and used for being connected with red and green indicating lamps.
In summary, the present application provides an IPC circuit board, which includes a PCB circuit board, a main chip 1, a light supplement lamp driver 2, an LED lamp connector 3, and a power supply module 4, all of which are disposed on the PCB circuit board, for driving an LED lamp based on the control of the main chip 1; the light supplement lamp driver 2 is respectively connected with the main chip 1 and the LED lamp connector 3; the LED lamp connector 3 is connected with the LED lamp; the power supply module 4 is connected to the main chip 1. The power supply module 4 supplies power for the IPC circuit board, the light supplement lamp driver 2 can realize light supplement for different IPCs, and the LED lamp connector 3 comprises at least two LED lamp interfaces of the IPC, so that different IPCs are connected to the IPC circuit board, the universality of the IPC circuit board is improved, and the workload, the stocking cost, the maintenance cost and the risk of hardware development are reduced.
On the basis of the above-described embodiment:
please refer to fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, fig. 2 is the structure diagram of another IPC circuit board provided by the present invention, fig. 3 is the structure diagram of another IPC circuit board provided by the present invention, fig. 4 is the structure diagram of another IPC circuit board provided by the present invention, fig. 5 is the front layout of the main components of an IPC circuit board provided by the present invention, and fig. 6 is the back layout of the main components of an IPC circuit board provided by the present invention.
As a preferred embodiment, the power supply module 4 includes:
a power connector 41 with one end connected with a power supply and used for connecting the power supply;
a voltage conversion module 42 having an input end connected to the other end of the power connector 41, and configured to convert a first voltage of the power supply into a second voltage, where the second voltage is smaller than the first voltage;
and the voltage reduction module 43 with an input end connected with the output end of the voltage conversion module 42 and an output end connected with the main chip 1 is used for reducing the second voltage to be suitable for the voltage of the main chip 1.
The circuit board supports 12V power supply of a ball machine and a gun machine, the power supply module 4 comprises a power supply connector 41, a voltage conversion module 42 and a voltage reduction module 43, when the accessed power supply voltage is a first voltage, the first voltage can be converted into a second voltage through the voltage conversion module 42, then the second voltage is reduced into a voltage suitable for the main chip 1 through the voltage reduction module 43, and the second voltage is smaller than the first voltage.
The power supply module 4 can be connected with power supplies with different voltages, if the power supply is a 12V power supply, the power supply can be converted through the voltage conversion module 42, then the voltage is reduced through the voltage reduction module 43 so as to be used by the main chip 1, and the universality of the circuit board is improved.
The voltage conversion module 42 can be selectively connected according to the voltage of the power supply, so that the user experience and the flexibility of the scheme are improved.
In addition, the power connector 41 has a specification of 2pin-1.25mm pitch.
In addition, the voltage converting module 42 and the voltage dropping module 43 may each use a DC-DC module, and are not limited thereto.
As a preferred embodiment, the power supply module 4 comprises:
a power connector 41 with one end connected with a power supply and used for connecting the power supply;
and the voltage reduction module 43, the input end of which is connected with the other end of the power connector 41 and the output end of which is connected with the main chip 1, is used for reducing the second voltage of the power supply to the voltage suitable for the main chip 1.
This circuit board supports the 5V power supply of cloud platform machine, power module 4 includes power connector 41 and step-down module 43, when the mains voltage of access is the second voltage, can drop the second voltage to the voltage that is fit for main chip 1 through step-down module 43, for example, the circuit board of this scheme can access 5V's power, step-down module 43 drops the 5V voltage to the voltage that is fit for main chip 1, for example 3.3V, 3.8V, 1.5V and 1.25V etc., has improved the feasibility and the flexibility of scheme, has improved the commonality of circuit board.
The power supply module 4 can be connected with power supplies with different voltages, if the power supply is a 5V power supply, the voltage can be directly reduced through the voltage reduction module 43 so as to be used by the main chip 1, and the universality of the circuit board is improved.
In addition, the power connector 41 has a specification of 2pin-1.25mm pitch.
In addition, the voltage reducing module 43 may use a DC-DC module, and is not limited thereto.
As a preferred embodiment, the IPC circuit board further includes a reset module disposed on the PCB circuit board for controlling the reset of the main chip 1;
the reset module is connected with the main chip 1.
The reset module is used for realizing the reset function of the main chip 1, the reset module is connected with the main chip 1 and arranged on the PCB, the reset module can realize the reset function of the main chip 1 of different IPCs, the universality of the circuit board is improved, and the user experience is improved.
As a preferred embodiment, the reset module includes:
a reset key 5 connected with the main chip 1 for realizing the reset function of the main chip 1 and/or a reset connector 6 having one end connected with the main chip 1 and the other end connected with an external device for realizing the reset function by the reset signal of the external device.
In this embodiment, different reset methods are provided, a user may use the reset key 5 to implement the reset function of the main chip 1, or use the reset connector 6 connected to the external device for implementing the reset function through the reset signal of the external device to reset, the external device may be a device capable of sending the reset signal, and connect to the reset connector 6 through a line, and then directly send the reset signal to the main chip 1, and reset may be implemented for different IPCs, thereby improving the versatility of the circuit board and the selectivity of the user.
It is required to explain, the veneer of the same size on the market all uses the button 5 that resets to come as the function that resets, the utility model discloses leave 2 pin's connector 6 that resets, need the condition that outside cable reset through this connector 6 switching that resets to partial ball machine, rifle bolt product, need not redesign circuit board again, the cost is reduced has improved the commonality of circuit board.
The reset connector 6 is specified to have a pitch of 2pin to 1.25 mm.
As a preferred embodiment, the IPC circuit board further comprises a network connection module disposed on the PCB circuit board for connecting an external network;
the network connection module is connected with the main chip 1.
The network connection module is arranged on the circuit board and connected with the main chip 1 to be used for completing connection between the main chip 1 and an external network, the network connection module is used for seeing that the network connection module comprises a wired network or a wireless network, a user can use the network to connect the main chip 1, connection between the main chip 1 and the external network can be achieved through the wireless network, the user can select according to requirements or actual conditions, user experience is improved, the circuit board can provide two modes of wired connection or wireless connection, and universality of the circuit board is improved.
Be provided with WIFI module 12 on the circuit board, when connecting for wireless network connection, can realize through WIFI module 12, improved the flexibility of scheme and user's experience.
As a preferred embodiment, the network connection module includes:
a network connector 7 having one end connected to an external network, for accessing the external network;
a network chip 8 having one end connected to the main chip 1, for converting a signal of an external network into a signal suitable for the main chip 1 through protocol conversion and/or converting a signal of the main chip 1 into a signal suitable for the external network through protocol conversion;
and the network transformer 9 is connected with the other end of the network connector 7 at one end and the other end of the network chip 8 at the other end, and is used for realizing level conversion between an external network and the network chip 8.
The network connector 7 is used as an interface of a network cable, can be connected with the network cable and is connected with an external network, after the network chip 8 receives the external network, a signal of the external network is converted into a signal which can be used by the main chip 1 through protocol conversion, so that the receiving of an external network signal is completed, in addition, the main chip 1 and the network chip 8 convert the signal of the main chip 1 into a signal which is suitable for the external network through protocol conversion, so as to realize the sending of the signal of the main chip 1, a network transformer 9 is also arranged between the network connector 7 and the network chip 8, the network transformer 9 realizes the level conversion between the external network and the network chip 8, converts the level of the external network into the level which is suitable for the network chip 8, and can also convert the level of the signal of the network chip 8 into the level which is suitable for the signal of the external network, so that the reliability of the scheme is improved, and the universality of the circuit board is improved.
The network connector 7 is an ethernet connector, the ethernet refers to a local area network, the ethernet connector can realize the connection between the main chip 1 and the local area network, the main chip 1 can send a signal through the network chip 8, the signal is transmitted to an external network through the ethernet connector, and the signal can be received through the external network, so that the feasibility of the scheme is improved.
The specification of the Ethernet connector is 4pin-1.25mm pitch.
As a preferred embodiment, the IPC circuit board has a length of 52.5mm and a width of 38.1mm.
The length of IPC circuit board is 52.5mm, the width is 38.1mm, be the circuit board of a professional specification, each components and parts can set up on this IPC circuit board, after setting up, can make each components and parts arrange on this circuit board, can set for the law of arranging by oneself, make and be adapted to the actual circuit condition after arranging, length is 52.5mm, the width can satisfy arranging of components and parts for 38.1 mm's IPC circuit board, can also practice thrift the resource of circuit board simultaneously, the resource of at utmost utilization circuit board, can not cause the waste again, the reliability of scheme has been improved.
As a preferred embodiment, the IPC circuit board further includes one or more of a TF card socket 10 connected to the main chip 1, a serial port debug port 11 connected to the main chip 1, an ICR driver 13 connected to the main chip 1, an ICR connector 14 connected to the ICR driver 13, a FLASH chip 15 connected to the main chip 1, an image sensor 16 connected to the main chip 1, an MIC connector 17 connected to the main chip 1, a power amplifier 18 connected to the main chip 1, a horn connector 19 connected to the power amplifier 18, a motor driver 20 connected to the main chip 1, and a motor interface 21 connected to the motor driver 20, which are disposed on the PCB circuit board.
Other devices can be arranged on the circuit board, wherein the TF card holder 10 is used for inserting a storage card, the serial port debugging port 11 is used for debugging the main chip 1 through external equipment, the ICR driver 13 is used for controlling a light filter of a lens, the FLASH chip 15 is used for storing programs, the image sensor 16 is used for image transmission, the MIC connector 17 is used for connecting a microphone, the power amplifier 18 is used for power amplification, the horn connector 19 is connected with a horn, the motor driver 20 is used for driving a motor, the devices can be arranged according to the requirements of users or actual use requirements, and the flexibility of the scheme is improved.
It should be noted that the TF card socket 10 and the main chip 1 perform level control through GPIO, the serial port debugging port 11 communicates with the main chip 1 through UART, the ICR driver 13 performs level control through GPIO with the main chip 1, the FLASH chip 15 communicates with the main chip 1 through SPI, and the circuit board is further provided with a serial port connector 22 for implementing a serial port connection function.
It should be noted that the specification of the ICR connector 14 is a distance of 2pin to 1.25mm, the specification of the MIC connector 17 is a distance of 2pin to 1.25mm, the specification of the serial port debugging port 11 is a distance of 4pin to 1.25mm, the specification of the horn connector 19 is a distance of 2pin to 1.25mm, and the specification of the motor interface 21 is a distance of 5pin to 1.25 mm.
The utility model also provides a camera, include as above-mentioned IPC circuit board.
Please refer to the embodiment of the IPC circuit board for the introduction of the camera provided by the present invention, which is not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
Claims (10)
1. An IPC circuit board is characterized by comprising a PCB circuit board, a main chip, a light supplement lamp driver, an LED lamp connector and a power supply module, wherein the main chip, the light supplement lamp driver, the LED lamp connector and the power supply module are all arranged on the PCB circuit board;
the light supplementing lamp driver is respectively connected with the main chip and the LED lamp connector;
the LED lamp connector is connected with the LED lamp and comprises at least two LED lamp interfaces of IPC;
the power supply module is connected with the main chip.
2. The IPC circuit board of claim 1, wherein the power module comprises:
the power connector is connected with a power supply at one end and is used for accessing the power supply;
the voltage conversion module is connected with the other end of the power connector at the input end and is used for converting a first voltage of the power into a second voltage, and the second voltage is smaller than the first voltage;
and the voltage reduction module is used for reducing the second voltage to be suitable for the voltage of the main chip.
3. The IPC circuit board of claim 1, wherein the power module comprises:
the power supply connector is connected with a power supply at one end and is used for being connected with the power supply;
and the voltage reduction module is used for reducing the second voltage of the power supply to a voltage suitable for the main chip.
4. The IPC circuit board of claim 1, wherein said IPC circuit board further comprises a reset module disposed on said PCB circuit board for controlling reset of said main chip;
the reset module is connected with the main chip.
5. The IPC circuit board of claim 4, wherein the reset module comprises:
the reset connector is connected with the main chip and is used for realizing the reset function of the main chip, and/or the reset connector is connected with the main chip at one end and external equipment at the other end and is used for realizing the reset function through the reset signal of the external equipment.
6. The IPC circuit board of claim 1, wherein said IPC circuit board further comprises a network connection module disposed on said PCB circuit board for connecting to an external network;
the network connection module is connected with the main chip.
7. The IPC circuit board of claim 6, wherein the network connection module comprises:
the network connector is connected with an external network at one end and is used for accessing the external network;
the network chip is connected with the main chip at one end and used for converting the signal of the external network into a signal suitable for the main chip through protocol conversion and/or converting the signal of the main chip into a signal suitable for the external network through protocol conversion;
and the network transformer is used for realizing level conversion between the external network and the network chip.
8. The IPC circuit board of claim 1, wherein the IPC circuit board has a length of 52.5mm and a width of 38.1mm.
9. The IPC circuit board of any one of claims 1 to 8, further comprising one or more of a TF card socket connected to the main chip, a serial port debug port connected to the main chip, an ICR driver connected to the main chip, an ICR connector connected to the ICR driver, a FLASH chip connected to the main chip, an image sensor connected to the main chip, an MIC connector connected to the main chip, a power amplifier connected to the main chip, a horn connector connected to the power amplifier, a motor driver connected to the main chip, and a motor interface connected to the motor driver, which are disposed on the PCB circuit board.
10. A camera comprising an IPC circuit board as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221063255.9U CN217770180U (en) | 2022-05-06 | 2022-05-06 | IPC circuit board and camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221063255.9U CN217770180U (en) | 2022-05-06 | 2022-05-06 | IPC circuit board and camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217770180U true CN217770180U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221063255.9U Active CN217770180U (en) | 2022-05-06 | 2022-05-06 | IPC circuit board and camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217770180U (en) |
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2022
- 2022-05-06 CN CN202221063255.9U patent/CN217770180U/en active Active
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