Air guard with electrostatic protection device

Abstract

The invention discloses an air guard with an electrostatic protection device, and the air guard with the electrostatic protection device comprises a sensor assembly box which is provided with a plurality of sensor circuit modules, each sensor circuit module is covered by a shielding cover, and each sensor circuit module is connected with an electrostatic protection device; the power supply assembly box is provided with a plurality of electrical interfaces, each electrical interface is provided with a protection device, the power supply assembly box is detachably connected with the sensor assembly box, the power supply assembly box is electrically connected with the sensor assembly box through the electrical interfaces, and the power supply assembly box is used for being connected with an external power supply through the electrical interfaces; and the external power supply is converted into working voltage and then is output to the sensor assembly box. According to the invention, the problem of low electrostatic discharge endurance capability in air guards is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrostatic protection, in particular to an air guardian with an electrostatic protection device. BACKGROUND

[0002] Electro-static discharge (ESD) refers to the phenomenon that electrostatic charge is transferred instantaneously between different potential objects after a certain degree of accumulation, and the instantaneous discharge voltage may reach several thousand volts or even tens of thousands of volts. Although the energy generated by ESD is small, a very large instantaneous power is generated due to the extremely short discharge time. With the increasing integration of semiconductor devices, the feature size is also getting smaller, and some have reached the nanometer level, resulting in extremely fragile packaging insulation layers of the devices and continuously declining ESD tolerance.

[0003] For electrostatic protection, there are currently three schemes: system-level protection, which builds an "equipotential, low-charge" electrostatic protection environment; board-level protection, which designs an ESD protection network on the hardware circuit; and chip-level protection, which designs an integrated ESD protection structure inside the integrated circuit. However, system-level protection is mainly used in the industrial manufacturing field, has high complexity and high construction cost, and cannot cover all use scenarios; board-level protection has high requirements for the hardware design stage, and generally uses TVS tubes and other discrete protection devices for protection, but these protection devices will occupy the printed circuit board area, increasing the BOM cost and mounting cost; chip-level protection has a huge contradiction with advanced packaging technology, and as the technology continues to advance, the packaging of chips becomes smaller and smaller, and the ESD tolerance is greatly reduced.

[0004] Therefore, for an air guardian that needs to install multiple sensors for air quality detection, the electrostatic protection capability will decrease due to the large number of sensors. SUMMARY

[0005] In view of the above deficiencies of the prior art, the purpose of the present application is to provide an air guardian with an electrostatic protection device to solve the problem of low electrostatic discharge tolerance in the air guardian.

[0006] The technical solution of the present application is as follows: An air guardian with an electrostatic protection device, comprising: A sensor assembly box is provided with a plurality of sensor circuit modules, each of which is covered by a shielding cover, and each of which is connected to an electrostatic protection device. The power supply component box is provided with a plurality of electrical interfaces, each of which is provided with a protection device, the power supply component box is detachably connected with the sensor component box, the power supply component box and the sensor component box are electrically connected through the electrical interfaces, the power supply component box is used to access external power supply through the electrical interfaces, and the external power supply is converted into working voltage and then output to the sensor component box.

[0007] Optionally, the plurality of sensor circuit modules of the sensor component box include a formaldehyde sensor, a PM2.5 sensor, a CO2 sensor and a communication module.

[0008] Optionally, the shielding cover covering the formaldehyde sensor, the PM2.5 sensor, the CO2 sensor and the communication module is uniformly provided with a plurality of air holes, and each air hole is attached with a waterproof air-permeable film.

[0009] Optionally, the communication module is a WiFi module, the WiFi module includes an antenna and a signal processing device, the antenna is exposed outside the shielding cover, and the signal processing device is arranged in the shielding cover, and the sensor component box further includes a shell, and the shell is a flame-retardant shell.

[0010] Optionally, the communication module is a wired communication module, and the sensor component box further includes a shell, and the shell is a flame-retardant shell or a metal shell.

[0011] Optionally, the sensor component box includes a panel and a key, the panel is provided with a front air hole, and the key is arranged on the panel, and the air guard with the electrostatic protection device further includes: a plurality of insulating sheets arranged at assembly gaps between the key and the panel and at the front air hole.

[0012] Optionally, the sensor component box further includes a light guide strip, the light guide strip is arranged on the panel, and the assembly gap between the light guide strip and the panel is further coated with a three-proof paint.

[0013] Optionally, the panel is further provided with a side air hole, and the side air hole is provided with insulating glue.

[0014] Optionally, the sensor component box is further provided with a metal decorative ring, and the metal decorative ring is grounded.

[0015] Optionally, the power supply component box includes: an external grounding port, the power supply component box is connected to a ground wire through the external grounding port.

[0016] This invention provides an air purifier with electrostatic discharge (ESD) protection, comprising a sensor assembly box and a power supply assembly box. The sensor assembly box contains multiple sensor circuit modules, each covered by a shield and connected to an ESD protection device. The power supply assembly box has multiple electrical interfaces, each equipped with a protective device. The power supply assembly box is detachably connected to the sensor assembly box via these interfaces. The power supply assembly box receives an external power source, converts it into a working voltage, and outputs it to the sensor assembly box. This design separates the sensor assembly and power supply into two detachably connected modules, providing individual ESD protection and shielding for each sensor circuit module. The multiple electrical interfaces of the power supply assembly box are protected by protective devices, thus enhancing the ESD tolerance of the air purifier with ESD protection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the functional modules of an embodiment of the air guard with electrostatic protection device of the present invention.

[0019] Figure 2 This is an exploded view of the sensor component box in the air guard with electrostatic protection device of the present invention.

[0020] Figure 3 This is an exploded view of the power supply component box in the air guard with electrostatic protection device of the present invention.

[0021] Figure 4 This is a schematic diagram of the circuit structure of a formaldehyde sensor in an air purifier with electrostatic protection device according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the circuit structure of a CO2 sensor in an air purifier with electrostatic protection device according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the circuit structure of a WiFi module in an embodiment of the air guard with electrostatic protection device of the present invention.

[0024] Explanation of reference numerals in the attached diagram: 1. Panel; 2. Button; 3. Insulating sheet; 4. Formaldehyde sensor; 5. WiFi module; 6. PM2.5 sensor; 7. Button board; 8. Processor board; 9. CO2 board; 10. CO2 sensor; 11. Panel bracket; 12. Back cover; 13. Power board; 14. Power bracket; 100. Power assembly box; 200. Sensor assembly box. Detailed Implementation

[0025] To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of the present invention involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0027] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0028] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] Electrostatic discharge (ESD) refers to the instantaneous charge transfer between objects with different potentials after static electricity has accumulated to a certain extent. The instantaneous discharge voltage can reach thousands or even tens of thousands of volts. Although the energy generated by ESD is small, the extremely short discharge time results in very large instantaneous power. With the increasing integration of semiconductor devices and their shrinking feature sizes, some reaching the nanometer scale, the encapsulation insulation layer of these devices is becoming extremely fragile, leading to a continuous decline in their ESD tolerance.

[0031] Currently, there are generally three solutions for electrostatic discharge (ESD) protection: system-level protection, which involves building an "equipotential, low-charge" ESD protection environment; board-level protection, which involves designing an ESD protection network on the hardware circuitry; and chip-level protection, which involves designing and integrating ESD protection structures within the integrated circuit. However, system-level protection is mostly used in industrial manufacturing, is highly complex, and has high setup costs, making it unable to cover all application scenarios. Board-level protection requires high-level hardware design and is generally achieved by adding discrete protection devices such as TVS diodes, but these devices occupy printed circuit board space, increasing BOM and mounting costs. Chip-level protection presents a significant challenge due to advanced packaging technology; as technology advances, chip packages become smaller and smaller, significantly reducing ESD resistance.

[0032] Therefore, for devices like Air Guardian that require multiple sensors to detect air quality, their electrostatic protection capability will decrease due to the large number of sensors.

[0033] To address the above problems, this invention proposes an air protector with an electrostatic protection device.

[0034] Reference Figure 1 In one embodiment, the air guard with electrostatic protection device includes: The sensor assembly box 200 is provided with multiple sensor circuit modules, each of which is covered by a shield and each of which is connected to an electrostatic protection device. The power supply assembly box 100 is provided with multiple electrical interfaces, each of which is provided with a protective device. The power supply assembly box 100 is detachably connected to the sensor assembly box 200. The power supply assembly box 100 and the sensor assembly box 200 are electrically connected through the electrical interfaces. The power supply assembly box 100 is used to connect to an external power source through the electrical interfaces and convert the external power source into a working voltage before outputting it to the sensor assembly box 200.

[0035] In this embodiment, to ensure that the precision electronic components inside the air guard are protected from electrostatic discharge damage and interference during daily user operation (touch panel buttons), maintenance (product assembly), and the device's own operation (long-term operation, airflow friction), thus protecting the overall performance of the product, this solution adopts a split design, dividing the air guard into a sensor component box 200 and a power component box 100. This reduces electrostatic transfer between the two modules. The sensor component box 200 can house multiple sensor circuit modules. Since sensor devices are highly sensitive to electrostatic shocks, electrostatic protection devices are added to each sensor module circuit to protect critical sensors, conducting any existing static electricity to a reference ground. These electrostatic protection devices can be ESD transistors or other devices with electrostatic protection functions. It is understood that this embodiment adds a shielding cover to the sensor surface that will come into contact with air. The shielding cover can be a metal shielding cover, similar to a Faraday cage. The principle behind the metal shielding cover is based on the Faraday cage effect: when a conductor is placed in an electrostatic field or a changing magnetic field, the charge on the conductor's surface redistributes, making the electric field inside the conductor almost zero. This phenomenon ensures that the space inside the cage is unaffected by external electric fields, effectively isolating static electricity.

[0036] Furthermore, because the air guardian module in this embodiment adopts a split design, the power supply component box 100 is assembled into the electrical box on the user's wall. Therefore, the power supply component box 100 has less contact with the user and less friction with the air, resulting in weaker electrostatic breakdown. Thus, in the hardware design of the power supply component box 100, this solution incorporates corresponding protective devices at the electrical interface to prevent electrostatic discharge generated by friction at the electrical interface from damaging internal sensitive components. Specifically, the protective device can be a TVS device, i.e., a transient voltage suppressor, an electronic component used to protect circuits from transient voltage spikes. The power supply component box 100 can be equipped with a power chip to convert external power into the required output voltage and current to supply the sensor component box 200.

[0037] This invention provides an air purifier with electrostatic discharge (ESD) protection, comprising a sensor assembly box 200 and a power supply assembly box 100. The sensor assembly box 200 houses multiple sensor circuit modules, each covered by a shield and connected to an ESD protection device. The power supply assembly box 100 has multiple electrical interfaces, each equipped with a protective device. The power supply assembly box 100 is detachably connected to the sensor assembly box 200 via these interfaces. The power supply assembly box 100 receives an external power source, converts it into a working voltage, and outputs it to the sensor assembly box 200. This design separates the sensor assembly and power supply into two detachably connected modules, providing individual ESD protection and shielding for each sensor circuit module. The multiple electrical interfaces of the power supply assembly box 100 are protected by protective devices, thus enhancing the ESD tolerance of the air purifier.

[0038] In another embodiment, regarding the structural design of the power supply component box 100, this solution provides a heat dissipation hole on the side of the power supply component box 100 embedded in the wall, reducing contact with the external environment. Furthermore, by assembling the power supply component box 100 onto an electrical box, the electrical box provides a layer of protection for the power supply component box 100, placing it in a relatively enclosed anti-static environment.

[0039] Reference Figure 2 In one embodiment, the plurality of sensor circuit modules of the sensor assembly box 200 include a formaldehyde sensor 4, a PM2.5 sensor 6, a CO2 sensor 10, and a communication module.

[0040] In this embodiment, the sensor component box 200 in the air quality monitor is used to detect air quality. Therefore, multiple sensor circuit modules may include a formaldehyde sensor 4, a PM2.5 sensor 6, and a CO2 sensor 10, as well as a communication module for communicating with external devices. The formaldehyde sensor 4 detects formaldehyde content by utilizing the proportional relationship between the current generated by the oxidation or reduction reaction of formaldehyde on the electrode and the formaldehyde concentration. The PM2.5 sensor 6 calculates the concentration and particle size distribution of the particles by detecting the intensity and angle of the scattered light when a laser beam is irradiated onto airborne particles. The CO2 sensor 10 calculates the concentration of carbon dioxide in the air by measuring the intensity change of the infrared light absorbed by carbon dioxide, or by utilizing the current or potential change generated by the chemical reaction between carbon dioxide and the electrode. The communication module can be wired or wireless, communicating with external devices and transmitting the detection results of the formaldehyde sensor 4, PM2.5 sensor 6, and CO2 sensor 10.

[0041] Reference Figure 2 The sensor assembly box 200 also includes a button board 7, a processor board 8, a CO2 board 9, and a panel bracket 11. The button board 7 can be used to hold the button 2, the processor board 8 can be used to hold the processor, the processor can process and transmit the data output by the formaldehyde sensor 4, the PM2.5 sensor 6, and the CO2 sensor 10, the CO2 board 9 is used to hold the CO2 sensor 10, and the panel bracket 11 can be used to support the panel 1 to ensure the stability of the structure.

[0042] In one embodiment, the shielding cover covering the formaldehyde sensor 4, the PM2.5 sensor 6, the CO2 sensor 10, and the communication module has multiple ventilation holes evenly spaced, and each ventilation hole is covered with a waterproof and breathable membrane.

[0043] In this embodiment, several ventilation holes are evenly distributed on the shielding cover of the formaldehyde sensor 4, PM2.5 sensor 6, CO2 sensor 10, and communication module. These ventilation holes are then covered with an anti-static, waterproof, and breathable membrane. This ensures that the formaldehyde sensor 4, PM2.5 sensor 6, CO2 sensor 10, and communication module are placed in a safe, insulated, and anti-static environment while still allowing them to fully contact the gas, thus ensuring that the sensor performance is not degraded due to electrostatic protection. In this embodiment, the multiple ventilation holes on the shielding cover allow the formaldehyde sensor 4, PM2.5 sensor 6, and CO2 sensor 10 to contact the flowing air, guaranteeing the accuracy and responsiveness of gas detection. The circuit structure of the formaldehyde sensor 4 can be referred to... Figure 4Configure the settings. The circuit structure of the CO2 sensor 10 can be found in [reference needed]. Figure 5 Configure the settings.

[0044] In one embodiment, the communication module is a WiFi module 5, which includes an antenna and a signal processing device. The antenna is exposed outside the shielding cover, and the signal processing device is disposed inside the shielding cover. The sensor assembly box 200 also includes a housing, which is a flame-retardant housing.

[0045] In this embodiment, the communication module uses WiFi module 5, which is a wireless communication method. This solution covers sensitive components other than the antenna, namely the signal processing device, with a shielding cover. This not only does not affect the signal transmission performance of the antenna but also effectively isolates static electricity, preventing damage to the signal processing device. An antenna is a transducer that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium, or vice versa. It is the component in WiFi module 5 used to transmit or receive electromagnetic waves. The signal processing device performs functions such as data input, reception, temporary storage, packetization, and power and speed adjustment. Furthermore, a metal casing can affect the performance of WiFi module 5; therefore, in this embodiment, a flame-retardant casing is used as the casing of the sensor component box 200. The flame-retardant casing can be made of polycarbonate, which has excellent mechanical strength and toughness, can withstand certain impacts and pressures, and is suitable for protecting internal electronic components. The circuit structure of WiFi module 5 can be referred to... Figure 6 Configure the settings.

[0046] In one embodiment, the communication module is a wired communication module, and the sensor assembly box 200 further includes a housing, which is a flame-retardant housing or a metal housing.

[0047] In this embodiment, the communication module can also employ wired communication. Wired communication modules primarily transmit data via physical lines such as network cables, fiber optic cables, and telephone lines. It is understood that since metal can affect the communication quality of the WiFi module 5 and reduce its performance, this embodiment uses a wired communication module. Therefore, the outer casing of the sensor assembly box 200 can be made of metal without affecting the communication module's operation. Alternatively, a flame-retardant casing can be used; the choice between a flame-retardant casing and a metal casing depends on the specific circumstances and user requirements. Furthermore, to allow the multiple sensors in the sensor assembly box 200 to come into contact with the gas, ventilation holes need to be provided on the outer casing of the sensor assembly box 200, and an anti-static, waterproof, and breathable membrane is applied to the inner wall of the casing, forming a closed "electric cage" for the entire sensor assembly box 200.

[0048] In one embodiment, the sensor assembly box 200 includes a panel 1 and a button 2. The panel 1 has a front ventilation hole, and the button 2 is disposed on the panel 1. The air guard with electrostatic protection device further includes: Multiple insulating sheets 3 are respectively disposed at the assembly gap between the button 2 and the panel 1 and at the front ventilation hole.

[0049] In this embodiment, the panel 1 of the sensor assembly box 200 is the outer structure of the sensor assembly box 200. It provides physical protection for various internal sensors (such as formaldehyde sensor 4, PM2.5 sensor 6, CO2 sensor 10, etc.), preventing dust, moisture, foreign objects, etc. from entering the box and avoiding these factors from affecting the normal operation and lifespan of the sensors. The panel 1 can also have display and indication functions, and the specific display content can be set according to the actual situation and user needs. The button 2 can be used to turn the device on or off, allowing users to turn off the air purifier when not needed to save energy, or to control the function of the air purifier. It is understood that there is a gap in the structural assembly of the button 2 and the panel 1. At the same time, static electricity may also enter the internal circuit board through the front ventilation hole on the panel 1, thereby damaging the sensitive devices. Therefore, in this embodiment, an insulating sheet 3 is placed at the assembly gap between the button 2 and the panel 1 and at the corresponding position of the front ventilation hole to isolate static electricity and provide basic protection for the inside of the sensor assembly box 200.

[0050] In one embodiment, the sensor assembly box 200 further includes a light guide strip disposed on the panel 1, and the assembly gap between the light guide strip and the panel 1 is coated with conformal coating.

[0051] In this embodiment, the light guide strip can be used to indicate the device's operating status, such as power indication, fault warning, or normal operation. Through different color or brightness changes, users can quickly understand the device's status. Alternatively, the light guide strip can indicate the currently active function or mode, helping users better understand the device's operation. It is understood that there will be a gap between the light guide strip and panel 1; therefore, in this embodiment, conformal coating can be evenly applied to the assembly gap between the light guide strip and panel 1 to fill the gap and isolate electrostatic creepage paths.

[0052] In one embodiment, the panel 1 is further provided with side ventilation holes, and the side ventilation holes are provided with insulating adhesive.

[0053] In this embodiment, side vents are provided on the side of panel 1, which, combined with the front vents on the front of panel 1, allows for free airflow, ensuring that the sensor can contact the surrounding air to obtain accurate measurement data. It also prevents the accumulation of internal moisture or heat, reducing the risk of sensor performance degradation due to environmental changes, and enables the sensor to respond more quickly to environmental changes and detect changes in air quality promptly. In this embodiment, insulating glue is applied to the wiring positions corresponding to the side vents on panel 1 to seal the electrostatic sensitive devices.

[0054] In one embodiment, the sensor assembly box 200 is further provided with a metal decorative ring, which is grounded.

[0055] In this embodiment, a grounded metal decorative ring is provided on the sensor component box 200. Before the user touches the sensor component box 200, the metal decorative ring can conduct the user's own charge to the ground, thereby reducing the transfer of charge.

[0056] In one embodiment, the power supply assembly box 100 includes: The power supply assembly box 100 is connected to the ground wire through the external grounding port.

[0057] In this embodiment, an external grounding port is provided on the power supply component box 100, and then connected to the ground wire of the user's household electricity through the external grounding port, so that all the static electricity received by the power supply component box 100 is conducted to the ground, which can reduce the accumulation of static electricity in the power supply component box 100.

[0058] Reference Figure 3 The power supply assembly box 100 also includes structures such as a rear cover plate 12, a power board 13, and a power support 14. The rear cover plate 12 can protect the internal power components from the influence of the external environment, such as dust, moisture, and physical impact. The power board 13 can convert the external power supply into the required output voltage and current to supply the sensor assembly box 200. The power support 14 can provide physical support to ensure that the power supply assembly is stably installed in the box and prevent damage caused by vibration or movement.

[0059] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An air protector with an electrostatic protection device, characterized in that, include: The sensor assembly box is provided with multiple sensor circuit modules, each of which is covered by a shield and each of which is connected to an electrostatic protection device. The power supply assembly box is provided with multiple electrical interfaces, each of which is equipped with a protective device. The power supply assembly box is detachably connected to the sensor assembly box, and the power supply assembly box and the sensor assembly box are electrically connected through the electrical interfaces. The power supply assembly box is used to connect to an external power source through the electrical interfaces and convert the external power source into a working voltage before outputting it to the sensor assembly box.

2. The air protector with electrostatic protection device as described in claim 1, characterized in that, The sensor assembly box includes multiple sensor circuit modules, including a formaldehyde sensor, a PM2.5 sensor, a CO2 sensor, and a communication module.

3. The air protector with electrostatic protection device as described in claim 2, characterized in that, The shielding cover covering the formaldehyde sensor, the PM2.5 sensor, the CO2 sensor, and the communication module has multiple evenly spaced ventilation holes, and each ventilation hole is covered with a waterproof and breathable membrane.

4. The air protector with electrostatic protection device as described in claim 3, characterized in that, The communication module is a WiFi module, which includes an antenna and a signal processing device. The antenna is exposed outside the shielding cover, and the signal processing device is disposed inside the shielding cover. The sensor assembly box also includes a housing, which is a flame-retardant housing.

5. The air protector with electrostatic protection device as described in claim 3, characterized in that, The communication module is a wired communication module, and the sensor assembly box also includes a housing, which is a flame-retardant housing or a metal housing.

6. The air protector with electrostatic protection device as described in claim 1, characterized in that, The sensor assembly box includes a panel and buttons. The panel has a front ventilation hole, and the buttons are located on the panel. The air guard with electrostatic protection device also includes: Multiple insulating sheets are respectively disposed at the assembly gap between the button and the panel and at the front ventilation hole.

7. The air protector with electrostatic protection device as described in claim 6, characterized in that, The sensor assembly box also includes a light guide strip, which is disposed on the panel, and the assembly gap between the light guide strip and the panel is coated with conformal coating.

8. The air protector with electrostatic protection device as described in claim 6, characterized in that, The panel is also provided with side ventilation holes, which are covered with insulating adhesive.

9. The air protector with electrostatic protection device as described in claim 1, characterized in that, The sensor assembly box is also provided with a metal decorative ring, which is grounded.

10. The air protector with electrostatic protection device as described in claim 1, characterized in that, The power supply assembly box includes: The power supply component box is connected to the ground wire through the external grounding port.

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