CN110652663A

CN110652663A - Breathing protection device

Info

Publication number: CN110652663A
Application number: CN201911013062.5A
Authority: CN
Inventors: 高天伟; 黄云程
Original assignee: Blue Ocean Hi Tech (beijing) Technology Co Ltd
Current assignee: Blue Ocean Hi Tech (beijing) Technology Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-01-07

Abstract

The invention provides a respiratory protection device comprising: a housing portion, a sound amplifying element, a filter portion, a body, a base, and a face mask; the end part of the main body is provided with a vent, the filtering part and the shell part are arranged at the end part of the main body, and a preset spacing distance is arranged between the shell part and the main body; the filter part is arranged between the shell part and the main body, and a ventilation gap is arranged between the filter part and the shell part; the main body is arranged on one side of the base, a cavity with an air outlet is formed between the main body and the base, and the mask is arranged on the other side of the base; the sound amplifying element is arranged in the breathing protective device and is used for amplifying the received sound. This respiratory protection device forms the ventilation gap between shell and filter house, not only can protect the filter house, can also improve the efficiency of admitting air, can avoid appearing breathing difficulty or the condition of suffocating to a certain extent. The public address component can amplify the sound emitted by the user, so that the user can conveniently communicate with other people when wearing the breathing protection device.

Description

Breathing protection device

Technical Field

The invention relates to the technical field of respiratory protection, in particular to a respiratory protection device.

Background

The mask generally refers to a device worn at the mouth and nose part for filtering air entering the mouth and nose so as to achieve the effect of blocking harmful gas, smell and spray from entering and exiting the mouth and nose of a wearer. The mask has a certain filtering function on air entering the lung, and has a very good effect when being worn in respiratory infectious diseases and working in environments polluted by dust and the like.

At present, the traditional mask is generally made of gauze or paper and the like, and the periphery of the mask is sealed as far as possible, so that the exchange speed of the mask and the outside air is reduced, and the breathing difficulty can be caused after the mask is worn for a long time. And the mask with better sealing can block the sound emitted by the user, and the normal communication between the user and other people is influenced.

Disclosure of Invention

To solve the above problems, an object of an embodiment of the present invention is to provide a respiratory protection device.

An embodiment of the present invention provides a respiratory protection device, including: a housing portion, a sound amplifying element, a filter portion, a body, a base, and a face mask;

the end part of the main body is provided with a vent, and the filter part is arranged at the end part of the main body and corresponds to the vent in position;

the shell part is arranged at the end part of the main body, and a preset spacing distance is arranged between the shell part and the main body; the filter part is arranged between the shell part and the main body, and a ventilation gap is arranged between the filter part and the shell part at an interval;

the main body is arranged on one side of the base, a cavity with an air outlet is formed between the main body and the base, and the mask is arranged on the other side of the base;

the public address component is arranged in the respiratory protection device and is used for public address of received sound.

In one possible implementation, the sound amplifying element comprises a sound pickup part, a processor and a loudspeaker, and the sound pickup part and the loudspeaker are respectively connected with the processor;

the sound collecting part is arranged in a breathing cavity formed between the base and the face mask and is used for collecting sound signals;

the processor is used for receiving the sound signal, performing noise reduction processing on the sound signal, and sending the sound signal subjected to noise reduction to the loudspeaker;

the loudspeaker is arranged in the shell part and used for playing the processed sound signal.

In a possible implementation manner, the apparatus further includes an audio amplifying circuit, and the processor is connected to the audio amplifying circuit; the processor is used for sending the sound signal subjected to noise reduction to the audio amplification circuit;

the audio amplifying circuit is also connected with the loudspeaker and used for amplifying the sound signal subjected to noise reduction and sending the amplified sound signal to the loudspeaker.

In one possible implementation manner, the device further comprises a first touch key;

the first touch key is arranged on the surface of one side end of the main body, connected with the processor and used for sending a first trigger signal to the processor, wherein the first trigger signal is used for switching the working state of the sound pickup part or the loudspeaker.

In one possible implementation, the device further comprises a fan; the fan is connected with the processor;

the processor is used for generating a pulse width control signal and sending the pulse width control signal to the fan;

the fan is arranged in a cavity formed between the main body and the base and used for rotating according to the pulse width control signal.

In a possible implementation manner, the device further comprises a second touch key;

the second touch key is arranged on the surface of the other side end of the main body, connected with the processor and used for sending a second trigger signal to the processor, and the second trigger signal is used for switching the working state of the fan.

In one possible implementation, the apparatus further comprises a main switch; the main switch comprises a switch key and a switch cap;

through holes are formed in the side ears of the base, and the switch keys are arranged on the inner side of the base; the switch cap is arranged on the switch key and penetrates through the through hole;

the switch key is connected with the processor and used for sending a switch signal to the processor.

In one possible implementation, the apparatus further includes a battery;

the storage battery is connected with the processor and used for supplying power to the processor;

when the respiratory protection device further comprises a fan, the storage battery is further connected with the fan and used for supplying power to the fan.

In a possible implementation manner, a first magnetic attraction structure is arranged on the outer shell part, and a second magnetic attraction structure is arranged on the main body; the first magnetic attraction structure and the second magnetic attraction structure correspond in position, and at least one of the first magnetic attraction structure and the second magnetic attraction structure is a columnar structure;

the shell part is connected with the main body through the first magnetic attraction structure and the second magnetic attraction structure.

In one possible implementation, the device further comprises a breather valve;

the face guard with the base forms respiratory cavity, the breather valve sets up respiratory cavity's bottom.

In the scheme provided by the embodiment of the invention, the ventilation gap is formed between the shell part and the filtering part, so that the filtering part can be protected, the air inlet efficiency can be improved, and the situation of difficult breathing or oppression can be avoided to a certain extent. The public address component can amplify the sound emitted by the user, so that the user can conveniently communicate with other people when wearing the breathing protection device, and the phenomenon that the speaking sound is small due to wearing the breathing protection device is avoided.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an overall structure of a respiratory protection device provided by an embodiment of the invention;

fig. 2 shows a burst view of a respiratory protection device provided by an embodiment of the present invention;

figure 3 shows a front view of a respiratory protection device provided by an embodiment of the present invention;

figure 4 shows a left side view of a respiratory protection device provided by an embodiment of the present invention;

figure 5 shows a top view of a respiratory protection device provided by an embodiment of the present invention;

figure 6 illustrates a bottom view of a respiratory protection device provided by an embodiment of the present invention;

figure 7 shows a rear view of a respiratory protection device provided by an embodiment of the present invention;

fig. 8 is an electrical schematic diagram of a respiratory protection apparatus provided by an embodiment of the present invention;

FIG. 9 is a circuit diagram of an audio amplifier circuit in the respiratory protection device according to the embodiment of the present invention;

FIG. 10 is a circuit diagram of a fan driving circuit of a respiratory protection device according to an embodiment of the present invention;

FIG. 11 is a circuit diagram of a touch button of the respiratory protection device according to an embodiment of the present invention;

fig. 12 is a circuit diagram of a switch button in the respiratory protection device according to the embodiment of the invention.

Icon:

10-a shell part, 11-a sound cavity shell, 12-a sound cavity bottom plate, 13-a sound emitting hole, 14-a first magnetic attraction structure, 21-a sound collecting part, 22-a processor, 23-a loudspeaker, 24-an audio amplifying circuit, 30-a filtering part, 31-a filtering front cover, 32-a filter element, 33-a filtering rear cover, 40-a main body, 41-a first touch key and 42-a second touch key, 43-a second magnetic attraction structure, 50-a fan, 60-a base, 61-a breather valve, 611-a valve seat, 612-a valve plate, 62-an air deflector, 63-a through hole, 64-a charging interface, 65-an indicator light, 70-a face mask, 80-a storage battery, 90-a main switch, 91-a switch key and 92-a switch cap.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A respiratory protection device, as shown in figures 1 to 7, comprising: a housing portion 10, a sound amplifying element, a filter portion 30, a body 40, a base 60 and a face mask 70.

Wherein, the end of the main body 40 is provided with a vent, and the filter part 30 is arranged at the end of the main body 40 and corresponds to the vent; the housing part 10 is provided at an end of the main body 40 with a predetermined interval distance between the housing part 10 and the main body 40. The filter part 30 is arranged between the shell part 10 and the main body 40, and a ventilation gap is arranged between the filter part 30 and the shell part 10; the main body 40 is disposed at one side of the base 60, a cavity having an air outlet is formed between the main body 40 and the base 60, and the mask 70 is disposed at the other side of the base 60. Furthermore, a sound amplifying element is arranged within the respiratory protection device for amplifying received sound.

In the embodiment of the present invention, the filter part 30 is used for filtering impurities or other harmful substances in the air, and a filter element 32 for filtering the air may be disposed therein. The housing part 10, the filter part 30 and the main body 40 are sequentially arranged, and the housing part 10 can play a role of protecting the filter part 30; meanwhile, a ventilation gap is formed between the filter part 30 and the housing part 10, so that external air can reach the filter part 30 through the ventilation gap, and enter a cavity between the main body 40 and the base 60 through the ventilation opening of the main body 40 after being filtered by the filter part 30. In this case, since the housing 10 is disposed at the end of the main body 40, a predetermined distance is required between the housing 10 and the main body 40 to ensure that a ventilation gap is formed between the filter 30 and the housing 10.

In this embodiment, the face mask 70 is a structure matching with the shape of a human face, and the material used for the face mask 70 may be a flexible material, such as liquid silicone. When the knee protecting device is used, the knee protecting device is worn on the face of a user, the face mask 70 can be tightly attached to the face of the user, and the flexible face mask 70 can effectively prevent a gap from being generated between the face mask 70 and the face of the user. After the air reaches the breathing cavity, the air is available for the user to breathe, and the user can breathe the filtered air. The air outlet of the cavity can be arranged at the upper part of the cavity, namely when a user breathes, filtered air passes through the bridge of the nose of the user and then reaches the vicinity of the nostrils from top to bottom.

In addition, the breathing protection device that this embodiment provided is equipped with public address component in, this public address component is used for enlargeing the sound that the user sent, and convenience of customers also can communicate with other people normally when wearing this breathing protection device, avoids leading to speaking sound less because of wearing breathing protection device. Wherein the sound amplifying element comprises a loudspeaker 23, and the loudspeaker 23 is arranged in the housing part 10, so that the end part of the breathing protective device can amplify the sound emitted by the user, and is convenient for communicating with people.

Optionally, referring to fig. 2, the respiratory protection device further comprises a respiratory valve 61; the mask 70 and the base 60 form a breathing chamber; referring to fig. 6 and 7, the breather valve 61 may be disposed at the bottom of the breather chamber. In the embodiment of the present invention, the breather valve 61 includes a valve seat 611 and a valve plate 612, the valve seat 611 may be disposed on the base 60, and the valve plate 612 is disposed on the valve seat 611. When the user exhales, the positive pressure of the gas discharged by the user blows the valve plate 612 open, so that the waste gas in the breathing cavity can be discharged, and the stuffiness feeling when the breathing protection device is used is reduced. When the user inhales, the negative pressure generated by inhalation will close the breather valve 61, thereby preventing external air from directly entering into the breathing cavity.

In addition, in the present embodiment, the breathing valve 61 is disposed at the bottom of the breathing chamber, and the air outlet of the breathing valve 61 may be disposed at the bottom of the knee protection device, as shown in fig. 6 and 7. With this breather valve 61 setting in the bottom for the hot waste gas of user's exhaling can be discharged downwards, can avoid leading to user face to freeze etc. because of hot waste gas contacts other positions of user face when cold.

According to the breathing protection device provided by the embodiment of the invention, the ventilation gap is formed between the shell part and the filtering part, so that the filtering part can be protected, the air inlet efficiency can be improved, and the situation of difficult breathing or oppression can be avoided to a certain extent. The public address component can amplify the sound emitted by the user, so that the user can conveniently communicate with other people when wearing the breathing protection device, and the phenomenon that the speaking sound is small due to wearing the breathing protection device is avoided.

On the basis of the above embodiment, the sound amplifying element includes the sound pickup portion 21, the processor 22, and the speaker 23; referring to fig. 8, the sound pickup portion 21 and the speaker 23 are connected to the processor 22, respectively.

The sound collecting part 21 is arranged in a breathing cavity formed between the base 60 and the face mask 70 and is used for collecting sound signals; the processor 22 is configured to receive the sound signal, perform noise reduction processing on the sound signal, and send the noise-reduced sound signal to the speaker 23; referring to fig. 2, a speaker 23 is provided in the housing part 10 for playing back the processed sound signal.

In the embodiment of the present invention, after the user wears the respiratory protection device, if the user speaks, the sound emitted by the user may be collected by the sound collecting portion 21, the sound collecting portion 21 converts the sound of the user into a digital signal, that is, a sound signal, and then the sound signal may be forwarded to the processor 22 for corresponding processing. The sound pickup portion 21 may be a microphone, and the processor 22 may control whether to allow sound pickup, that is, whether to collect sound by the sound pickup portion 21; wherein the sound-collecting part 21 may be arranged inside the breathing protective device in order to avoid that the sound-collecting part 21 gets grey or gets in contact with humid air exhaled by the user. Specifically, the respiratory protection device further includes a first touch button 41; the first touch button 41 is disposed on a side end surface of the main body 40, and the first touch button 41 is connected to the processor 22 and configured to send a first trigger signal to the processor 22, where the first trigger signal may be used to switch an operating state of the sound collecting portion 21, so as to control whether the sound collecting portion 21 collects sound.

After receiving the sound signal, the controller 22 filters the same-frequency noise, and retains a valid signal, which is the sound signal with the noise reduced. The speaker 23 restores the sound signal after receiving the sound signal, converts the sound signal into an analog signal, and plays the analog signal, so that an external person can hear the sound emitted by the user. The first trigger signal may also be used to switch the working state of the speaker 23, so as to control whether the speaker 23 plays the sound signal.

In this embodiment, as shown in fig. 2, the casing part 10 includes a sound cavity casing 11 and a sound cavity bottom plate 12, the sound cavity casing 11 is a concave structure, and a sound emission hole 13 is formed at an end of the sound cavity casing 11; the sound cavity shell 11 is arranged on the sound cavity bottom plate 12 and forms a sound cavity; the speaker 23 is disposed in the sound chamber with the sound emitting surface of the speaker 23 facing the sound emitting hole 13 so that the sound emitted from the speaker 23 can pass through the sound emitting hole 13 to the outside. In this embodiment, the concave-shaped sound cavity housing 11 and the sound cavity bottom plate 12 may form a sound cavity, and the speaker 23 is placed in the sound cavity to facilitate sound amplification.

Optionally, referring to fig. 8, the apparatus further includes an audio amplifying circuit 24, and the processor 22 is connected to the audio amplifying circuit 24; the processor 22 is configured to send the noise-reduced sound signal to the audio amplifying circuit 24. The audio amplifier circuit 24 is further connected to the speaker 23, and configured to amplify the noise-reduced sound signal and send the amplified sound signal to the speaker 23.

In the embodiment of the present invention, the audio amplifier circuit 24 amplifies the audio signal to be played, so as to increase the volume of the sound emitted by the speaker 23, further facilitate other people to hear the sound of the user, and facilitate communication. The specific structure of the AUDIO amplifier circuit 24 is shown IN fig. 9, after receiving the AUDIO signal AUDIO _ IN sent by the processor 22, the AUDIO amplifier circuit 24 performs an amplification process on the AUDIO signal AUDIO _ IN, and sends the amplified AUDIO signal to the speaker 23 (i.e., SPEAK IN fig. 9).

Optionally, the respiratory protection device further comprises a fan 50; the fan 50 is connected to the processor 22; the processor 22 is configured to generate a pulse width control signal and send the pulse width control signal to the fan 50; the fan 50 is disposed in a cavity formed between the main body 40 and the base 60 for rotation according to the pulse width control signal.

In the embodiment of the present invention, the processor 22 controls the rotation speed of the fan 50 through the Pulse width control signal, that is, the processor 22 sends PWM (Pulse width modulation) signals with different duty ratios to the fan 50, and controls the rotation speed of the fan by adjusting the duty ratio of the PWM signal. The pulse width control signal (i.e., PWM signal) drives the fan 50 to operate through a fan driving circuit, and the structure of the fan driving circuit is shown in fig. 10. The processor 22 generates a pulse width control signal M _ PWM that is passed through the fan drive circuit to vary the three-phase voltage U, W, V output to the fan 50 (i.e., MOTOR in fig. 10) so that the speed of the fan 50 can be controlled. For example, a two-stage speed change of the fan 50 may be achieved.

In this embodiment, the fan 50 is disposed in the cavity between the main body 40 and the base 60, and negative pressure can be formed in the cavity during operation of the fan, so that external air is sucked into the cavity after passing through the filter portion 30, and the air in the cavity is filtered air. And the ventilation gap is of an annular structure, namely, air can enter the periphery of the filtering part 30, so that the air inlet efficiency can be improved. In addition, under the action of the blower 50, the air in the cavity can reach a breathing cavity formed between the base 60 and the face mask 70 after passing through the air outlet of the cavity.

Meanwhile, the fan 50 in this embodiment may be in a working state all the time, and continuously deliver the filtered air into the breathing cavity; even when the user exhales, the pressure in the breathing cavity can be ensured not to be too high due to the existence of the breathing valve 61, so that the user can exhale waste gas smoothly, and the user can not exhale difficultly due to the existence of the fan 50.

Optionally, the respiratory protection device further comprises a second touch key 42. The second touch key 42 is disposed on the other side end surface of the main body 40, and the second touch key 42 is connected to the processor 22 and configured to send a second trigger signal to the processor 22, where the second trigger signal is used to switch the operating state of the fan 50.

In the embodiment of the present invention, two touch keys, namely, the first touch key 41 and the second touch key 42, are disposed on two sides of the main body 40, and the two touch keys are respectively used for controlling the working states of the sound pickup portion 21 (or the speaker 23) and the fan 50, so as to facilitate a user to select whether a sound amplifying function and a fan assisted breathing function are required. Referring to fig. 11, TK1 and TK2 respectively represent the first touch key 41 and the second touch key 42, and the first trigger signal TOUT1 and the second trigger signal TOUT2 generated by the two touch keys can be respectively transmitted to the processor 22, so that the processor 22 performs corresponding actions after receiving the trigger signals.

On the basis of the above embodiment, referring to fig. 2, the respiratory protection device further comprises a main switch 90; the main switch 90 includes a switch key 91 and a switch cap 92.

A through hole is formed at the side ear of the base 60, and the switch key 91 is arranged at the inner side of the base 60; the switch cap 92 is arranged on the switch key 91 and penetrates through the through hole; referring to fig. 8, the switch button 91 is connected to the processor 22 for sending a switch signal to the processor 22.

In the embodiment of the present invention, the main switch 90 is a main switch of an internal circuit structure of the respiratory protection device, and a user can control the respiratory protection device to enter a working state or shut down by operating the main switch 90. Alternatively, the main switch 90 may be a long-press switch, i.e. the user may switch the state of the respiratory protection device by a long-press operation, and switch between power-on and power-off cyclically. Specifically, referring to fig. 12, the circuit configuration of the switch 91 is shown, and in fig. 12, the switch 91 is denoted by K3, and a switch signal can be input to the controller 22 by pressing the switch K3.

In addition, as shown in fig. 2 and 3, a charging interface 64 is optionally provided at the side ear of the base 60 for charging the battery 80 in the cavity. Furthermore, a plurality of indicator lights 65 may be provided, with different indicator lights being used to indicate different states of the respiratory protection device. Fig. 3 illustrates an example in which two indicator lamps 65 are provided. Different indicator lights 65 may be provided in different colors. For example, the two indicator lights 65 are a red indicator light and a blue indicator light, respectively, the red indicator light is on to indicate that the device is in a charged or undercharged state; the blue indicator light is on to indicate that the product is fully charged. Alternatively, the operating mode of the indicator light 65 may indicate different states, such as the indicator light 65 being constantly on to indicate full charge, the indicator light 65 flashing to indicate a fault, etc. The detailed circuit structure of the indicator lamp 65 can be seen in fig. 12, and two indicator lamps are denoted by LD2 and LD3 in fig. 12.

Optionally, referring to fig. 2 and 8, the respiratory protection device further comprises a battery 80. A battery 80 is connected to the processor 22 for supplying power to the processor 22. In addition, as shown in fig. 8, when the respiratory protection device further comprises a fan 50, the battery 80 is also connected to the fan 50 for supplying power to the fan 50.

On the basis of the above embodiment, referring to fig. 2, an air deflector 62 is disposed in the cavity between the main body 40 and the base 60, and the air deflector 62 is disposed along the wind direction of the air outlet facing the cavity. In the embodiment of the present invention, the air deflector 62 can guide the airflow blown out by the fan 50 to the air outlet, so as to improve the flow efficiency of the air in the cavity. Wherein, because the air outlet of the cavity is arranged at the upper part of the cavity, the air deflector 62 can be arranged along the up-and-down direction, so that the air current can flow upwards to the air outlet; simultaneously, breather valve 61 sets up in the bottom to can form the airflow channel of syntropy, effectively guarantee respiratory smooth and easy, improve user experience.

Optionally, the housing 10 is provided with a first magnetic attraction structure 14, and the main body 40 is provided with a second magnetic attraction structure 43; the first magnetic attraction structure 14 and the second magnetic attraction structure 43 are corresponding in position, and at least one of the first magnetic attraction structure 14 and the second magnetic attraction structure 43 is a columnar structure. The housing portion 10 and the main body 40 are connected by a first magnetic attraction structure 14 and a second magnetic attraction structure 43.

In the embodiment of the present invention, the housing 10 and the main body 40 are connected by a columnar structure, so that a certain distance is ensured between the two; meanwhile, the filter part 30 may be sealingly provided at the end of the main body 40, so that a ventilation gap may be secured between the filter part 30 and the housing part 10. Meanwhile, the housing part 10 is connected with the main body 40 through a magnetic attraction structure, so that the housing part 10 is conveniently detached from the main body 40, and a user can conveniently replace the filter part 30 or the filter element 32 in the filter part 30. As shown in fig. 2, the present embodiment is illustrated by connecting the housing portion 10 and the main body 40 through three magnetic attraction structures, that is, three pairs of the first magnetic attraction structures 14 and the second magnetic attraction structures 43 are included.

Optionally, the filter part 30 includes a filter front cover 31, a filter element 32 and a filter rear cover 33; the structure of the front filter cover 31 is matched with that of the rear filter cover 33; the filter element 32 is disposed between the filter front cover 31 and the filter rear cover 33. In this embodiment, the filter element 32 may be specifically disposed in the filter front cover 31; the front filter cover 31 and the rear filter cover 33 are only used for enclosing the filter element 32, and both the front filter cover 31 and the rear filter cover 33 are of a ventilation structure. As shown in fig. 2, the front filter cover 31 is provided with ventilation openings in its main body, and the rear filter cover 33 is provided with a spoke-like skeleton for supporting the filter element 32 and allowing air to pass therethrough.

Wherein, this filter core 32 specifically can adopt multilayer structure to make. For example, the filter element 32 may comprise a four-layer structure, respectively: the device comprises an electrostatic adsorption layer, a sterilization layer, an organic adsorption layer and an activated carbon layer. The static adsorption layer is used for blocking PM2.5 particulate matters from being sucked, the sterilization layer is used for blocking microorganisms such as viruses and bacteria, the organic adsorption layer is used for blocking oily particulate matters such as automobile exhaust and PM2.5 particulate matters from being sucked, and the activated carbon layer is used for blocking harmful gases and odor from being sucked.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A respiratory protection device, comprising: a housing portion, a sound amplifying element, a filter portion, a body, a base, and a face mask;

2. The respiratory protection device of claim 1, wherein the sound emitting element comprises a sound pickup portion, a processor and a speaker, the sound pickup portion and the speaker being respectively connected to the processor;

3. The respiratory protection device of claim 2, further comprising an audio amplification circuit, the processor coupled to the audio amplification circuit; the processor is used for sending the sound signal subjected to noise reduction to the audio amplification circuit;

4. A respiratory protection device according to claim 2 further comprising a first touch key;

5. The respiratory protection device of claim 2 further comprising a fan; the fan is connected with the processor;

6. The respiratory protection device of claim 5 further comprising a second touch key;

7. The respiratory protection device of claim 2 further comprising a main switch; the main switch comprises a switch key and a switch cap;

8. Respiratory protection devices according to any one of claims 2 to 7, further comprising a battery;

9. The respiratory protection device of claim 1 wherein the outer shell portion has a first magnetic attraction structure and the main body has a second magnetic attraction structure; the first magnetic attraction structure and the second magnetic attraction structure correspond in position, and at least one of the first magnetic attraction structure and the second magnetic attraction structure is a columnar structure;

10. The respiratory protection device of claim 1 further comprising a respiratory valve;