Fireproof safety helmet for smoke prevention and poison prevention and protection method

Abstract

The fireproof safety helmet for smoke and gas prevention is composed of the helmet body, the elastic sealing ring, the perspective window and the rescue assembly, the helmet is arranged on the head and neck in a sleeving mode to form a closed space, and a filtering air inlet and outlet channel and a corresponding air inlet piece are arranged in the closed space. According to the design, the defects in the prior art are overcome, the air inlet part conveys outside filtered and purified air into the closed space in the helmet, the internal air pressure of the closed space is larger than that of the outside, and the air can enter the closed space in the helmet more conveniently; the filtering structure is optimized, certain filtering efficiency is guaranteed, meanwhile, breathing resistance is reduced, poison gas invasion is blocked, and escape and rescue are facilitated; and all the components are cooperated, so that the problems of integration and simultaneous wearing of fireproof and anti-poison functions are solved, smoke and poison gas are effectively isolated, and the survival probability and the operation capability of a user in a fire scene are improved.

Description

Technical Field

[0001] This application relates to the field of helmets, and particularly to a fire safety helmet for preventing smoke and poison and a protection method thereof. Background Art

[0002] A large amount of smoke and poisonous gas is generated synchronously with combustion at the fire scene. The vast majority of people trapped at the fire scene are invaded by smoke and poisonous gas into the eyes, mouth and nose, resulting in the eyes being unable to see objects and path conditions, and inhaling the smoke and poisonous gas instantly causes suffocation and thus loses the ability to move, rather than being trapped by the flame at the beginning. At present, fire protection mainly relies on two types of equipment: fire helmets and gas masks. Fire helmets are mostly made of flame-retardant materials, but their design focus is on resisting flames and high temperatures, and they cannot effectively block smoke and toxic gases. Although gas masks can filter poisonous gases, they rely on facial fitting to achieve airtightness, and due to individual face shape differences, it is easy to cause poor sealing, which easily allows poisonous gas to seep in; in addition, their filtering structure usually uses multiple layers of high-density materials, which can improve the filtering efficiency but significantly increase the breathing resistance, resulting in difficult inhalation for users and making it difficult to adapt to high-intensity escape or rescue activities. At the same time, the existing protective equipment has a single function, and it is difficult to wear a fire helmet and a gas mask at the same time due to structural conflicts, which greatly limits the actual application effect in the fire scene.

[0003] Therefore, it is necessary to provide a fire safety helmet and a protection method that can simultaneously isolate smoke and poisonous gas and block flames. Summary of the Invention

[0004] In view of this, it is necessary to provide a fire safety helmet and a protection method that can simultaneously isolate smoke and poisonous gas and block flames to solve the above problems.

[0005] An embodiment of this application provides a fire safety helmet for preventing smoke and poison, which is applied to a fire with poisonous gas and smoke. The safety helmet includes a helmet main body and an elastic sealing ring connecting the helmet. The elastic sealing ring is sleeved on the neck, the helmet is sleeved on the head, and the helmet is spaced from the head to form a closed space;

[0006] A perspective window is provided on the helmet and is arranged opposite the eyes;

[0007] A rescue component is arranged on the helmet adjacent to the perspective window and is used for lighting and sending rescue contact signals;

[0008] Wherein, when the helmet is sleeved on the head and neck, the helmet is provided with a filtered air intake channel and a filtered air outlet channel. The filtered air intake channel communicates the sealed space with the external environment. The filtered air intake channel has an intake member for delivering external gas into the sealed space, so that the internal air pressure of the sealed space is greater than the external air pressure. One end of the filtered air outlet channel is directly opposite the mouth and nose, and the other end communicates with the external environment, so that the gas exhaled from the mouth and nose is transmitted to the external environment through the filtered air outlet channel.

[0009] In at least one embodiment of the present application, the safety helmet further includes a protective cape, which is connected to the elastic sealing ring. When the safety helmet is sleeved on the head and neck, the protective cape is placed at the shoulder.

[0010] In at least one embodiment of the present application, the filtered air intake channel further includes a filter layer and a one-way intake valve. The filter layer is located between the one-way intake valve and the intake member, and the intake member is provided on the side away from the head;

[0011] When the intake member is opened, the filter layer is used to filter and purify the incoming external gas, and the intake member blows the filtered and purified gas into the sealed space through the one-way intake valve.

[0012] In at least one embodiment of the present application, the rescue component includes a lighting lamp and a rescue signal system. The lighting lamp, the rescue signal system and the intake member are electrically connected to the power supply. The rescue signal system is used to send rescue contact signals.

[0013] In at least one embodiment of the present application, the filtered air outlet channel has a one-way exhaust valve to discharge the gas exhaled from the mouth and nose to the external environment through the one-way exhaust valve.

[0014] In at least one embodiment of the present application, the filtered air intake channel further has a connection port, which is provided on the side away from the head, and the connection port has a threaded groove structure for connecting a gas supply device.

[0015] In at least one embodiment of the present application, the intake member is an electric fan, and the electric fan is electrically connected to a power module. The power module is an external power supply connected to the safety helmet or an internal storage battery of the safety helmet, and is used to supply power to the electric fan.

[0016] In at least one embodiment of the present application, the safety helmet further includes a buffer suspension strap, which is arranged on the inner wall of the helmet. The buffer suspension strap includes a plurality of elastic straps and a plurality of fixing parts. The plurality of fixing parts are arranged on the helmet at intervals and are arranged in pairs on the elastic straps, and the elastic straps are arranged at intervals from the inner wall of the helmet. When the helmet is sleeved on the head and neck, the buffer suspension strap fits the top of the head to support the helmet.

[0017] In at least one embodiment of the present application, the rescue signal system is an alarm signal transmitter.

[0018] An embodiment of the present application provides a protection method for a fire safety helmet, which is applied to the above-mentioned fire safety helmet for preventing smoke and poison.

[0019] Before entering a fire scene with poisonous gas and smoke, wear the safety helmet on the head, with the perspective window facing the eyes and the elastic sealing ring fitting the neck, and turn on the rescue component and the air inlet component. The air inlet component blows the outside gas through the filtered air inlet channel over the filter layer and the one-way air inlet valve, filters and purifies the outside gas into processed gas, and stores the processed gas in a closed space. When a person inhales, the processed gas in the closed space enters the person's mouth and nasal cavity; when a person exhales, the gas exhaled from the mouth and nasal cavity is discharged through the filtered air outlet channel.

[0020] The above-mentioned fire safety helmet for preventing smoke and poison is composed of a helmet main body, an elastic sealing ring, a perspective window and a rescue component. When sleeved on the head and neck, it can form a closed space, which has a filtered air inlet and outlet channels and corresponding air inlet components. This design overcomes the defects of the prior art. The air inlet component conveys the outside gas to make the internal air pressure greater than the outside, and makes the gas easy to enter the closed space inside the helmet; the filtering structure is optimized, reducing the breathing resistance while ensuring a certain filtering efficiency, blocking the intrusion of poisonous gas, and facilitating escape and rescue; and each component cooperates to solve the problem of the integration of fire prevention and poison prevention functions and the problem of wearing them at the same time, effectively isolating smoke and poisonous gas, especially being able to efficiently solve the actual scene requirement that "in most cases, people are first trapped by smoke and poisonous gas rather than being burned by fire first and it is difficult to escape" in a fire scene, and improving the survival probability and working ability of users in a fire scene. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a fire safety helmet for preventing smoke and poison in an embodiment of the present application.

[0022] Figure 2 It is a schematic structural diagram of the fire safety helmet sleeved on the head in an embodiment of the present application.

[0023] Figure 3 It is a schematic structural diagram of the filtered air inlet channel in an embodiment.

[0024] Figure 4 It is a schematic structural diagram of the filtered air outlet channel in an embodiment.

[0025] Description of main component symbols

[0026] 100, a fire safety helmet for preventing smoke and poison gas; 10, helmet; 11, elastic sealing ring; 12, protective cape; 20, perspective window; 30, rescue component; 31, lighting lamp; 32, rescue signal system; 40, filtered air inlet channel; 41, air inlet part; 42, filter layer; 43, one-way air inlet valve; 44, connection port; 441, thread groove; 50, filtered air outlet channel; 51, one-way air outlet valve; 60, buffer suspension belt; 61, elastic belt; 62, fixing part; F1, air inlet direction; F2, air outlet direction. Specific embodiments

[0027] Next, the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0028] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may exist on an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or may exist on an intermediate component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used in this article are only for the purpose of illustration.

[0029] The embodiment of the present application provides a fire safety helmet for preventing smoke and poison gas, which is applied to a fire with poisonous gas and smoke. The safety helmet includes a helmet body and an elastic sealing ring connecting the helmet. The elastic sealing ring is sleeved on the neck, the helmet is sleeved on the head, and there is a spaced position between the helmet and the head to form a closed space;

[0030] A perspective window is disposed on the helmet and is directly opposite the eyes;

[0031] A rescue component is disposed on the helmet adjacent to the perspective window and is used for lighting and sending rescue contact signals;

[0032] Wherein, when the helmet is sleeved on the head and neck, the helmet is provided with a filtered air intake channel and a filtered air outlet channel. The filtered air intake channel communicates the sealed space with the external environment. The filtered air intake channel is provided with an air intake member, which is used to blow external gas through the filter layer and the one-way air intake valve, and convey the filtered and purified gas into the sealed space, so that the internal air pressure of the sealed space is greater than the external air pressure. One end of the filtered air outlet channel is directly opposite the mouth and nose, and the other end communicates with the external environment, so that the gas exhaled from the mouth and nose is discharged to the external environment through the filtered air outlet channel.

[0033] The provided fire safety helmet for preventing smoke and poison gas is composed of a helmet main body, an elastic sealing ring, a perspective window and a rescue component. When sleeved on the head and neck, it can form a sealed space, and is internally provided with a filtered air intake and outlet channels and corresponding air intake members. This design overcomes the defects of the prior art. The air intake member conveys external gas to make the internal air pressure greater than the external air pressure, and facilitates the gas to enter the sealed space between the helmet and the head; the filtering structure is optimized to reduce the breathing resistance while ensuring a certain filtering efficiency, block the intrusion of poisonous gas, and facilitate escape and rescue; and each component cooperates to solve the problems of the integration of fire prevention and poison gas prevention functions and simultaneous wearing, effectively isolating smoke and poison gas, and improving the survival probability and operation ability of users in a fire scene.

[0034] The following will Figures 1-4 describe some embodiments of the present application in detail with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0035] The present application provides a fire safety helmet 100 for preventing smoke and poison gas, which is applied to a fire with poisonous gas and smoke. The fire safety helmet 100 includes a helmet 10 main body, an elastic sealing ring 11, a perspective window 20 and a rescue component 30.

[0036] Wherein, the elastic sealing ring 11 is connected to the helmet 10, the elastic sealing ring 11 is sleeved on the neck, the helmet 10 is sleeved on the head, and the helmet 10 is spaced from the head to form a sealed space; the perspective window 20 is arranged on the helmet 10 and is directly opposite the eyes; the rescue component 30 is arranged adjacent to the perspective window 20 on the helmet 10 and is used for lighting and sending rescue contact signals.

[0037] Wherein, when the helmet 10 is sleeved on the head and neck, the helmet 10 is provided with a filtered air intake channel 40 and a filtered air outlet channel 50. The filtered air intake channel 40 communicates the sealed space with the external environment. The filtered air intake channel 40 has an air intake member 41, and the air intake member 41 is used to convey external gas into the sealed space, so that the internal air pressure of the sealed space is greater than the external air pressure. One end of the filtered air outlet channel 50 is directly opposite the mouth and nose, and the other end communicates with the external environment, so that the gas exhaled from the mouth and nose is discharged to the external environment through the filtered air outlet channel 50.

[0038] In the embodiment of the present application, it should be noted that the fire safety helmet 100 provided in this embodiment includes a helmet 10 main body. The helmet 10 main body is made of a high-strength flame-retardant material to ensure its structural stability in a high-temperature fire scene, and at the same time has a lightweight characteristic, which is convenient for long-term wearing. When the head is put into the helmet 10, there is a gap between the inner wall of the helmet 10 and the head, and a sealed space is formed inside the helmet 10, so that the gas inside the helmet 10 can be used by the wearer without hindrance. In particular, it can effectively solve the actual scenario requirements of "in most cases, people at the fire scene are first trapped by smoke and poisonous gas rather than being burned first and having difficulty in escaping".

[0039] Specifically, when the head is sleeved into the helmet 10, the elastic sealing ring 11 is placed at the neck. The elastic sealing ring 11 is made of an elastic sealing material. The stretchable elastic sealing ring 11 can be suitable for people with different face shapes and head shapes. By using the characteristics of uniform neck muscle distribution and small shape differences, a higher consistency airtight effect can be achieved. And the ring band is internally provided with an elastic memory material, which can be stretched to adapt to different neck circumferences (such as the range of 30-50 cm for adults), ensuring a tight fit. The elastic sealing ring 11 and the helmet 10 main body together form a closed protection space to prevent external smoke from infiltrating, so as to ensure airtightness, thereby solving the actual scenario requirements of "in most cases, people at the fire scene are first trapped by smoke and poisonous gas rather than being burned first and having difficulty in escaping".

[0040] Furthermore, the perspective window 20 is made of a high-temperature resistant transparent material (such as polycarbonate or tempered glass coated with an anti-fog film, etc.), facing the eyes to provide a clear field of vision, so that the wearer can still observe the surrounding environment in a thick smoke environment, improving the escape and rescue efficiency. When the helmet 10 is worn on the head, the rescue component 30 is arranged on the front of the helmet 10, so that the rescue component 30 can improve the search and rescue efficiency for people.

[0041] Furthermore, the filtered air intake passage 40 connects the outside to the enclosed space, allowing only outside air to enter the helmet 10 through the filtered air intake passage 40. An air intake member 41 is provided to enhance the air intake efficiency. The air intake passage actively conveys the filtered clean air, making the air pressure in the enclosed space slightly higher than the outside. Through the air intake member 41, outside air can easily enter the enclosed space inside the helmet 10. The spaced area between the helmet 10 and the head facilitates the wearer to breathe smoothly with the air inside the helmet 10. The filtered air intake passage 40 prevents outside toxic smoke from directly entering the helmet 10 and contacting the face and respiratory system. The outside toxic smoke is filtered through the filtered air intake passage 40 to obtain the processed gas.

[0042] Furthermore, the filtered air intake passage 40 is provided at the top of the head or other suitable positions on the top of the head. It should be noted that "more than one" filtered air intake passage can be opened, and multiple passages can be opened according to design needs for better air intake. The filtered air outlet passage 50 is located at the mouth and nose, such that there is sufficient length between the filtered air outlet passage 50 and the filtered air intake passage 40, allowing outside air to enter the enclosed space through the filtered air intake passage 40 and completely filling the enclosed space with air. The filtered air outlet passage 50 only allows the air inside the helmet 10 to be discharged to the outside through the filtered air outlet passage 50.

[0043] In summary, before entering a fire scene with poisonous gas and smoke, wear the safety helmet 10 on the body, with the perspective window 20 facing the eyes and the elastic sealing ring 11 fitting against the neck. Then activate the rescue component 30 and the air intake member 41. The air intake member 41 blows outside air through the filtered air intake passage 40 over the filter layer 42 and the one-way air intake valve 43, purifying the outside air into processed gas. The processed gas is stored in the enclosed space. When a person inhales, the processed gas in the enclosed space enters the person's oral and nasal cavities; when a person exhales, the gas exhaled from the oral and nasal cavities is discharged through the filtered air outlet passage 50.

[0044] In a specific embodiment, the safety helmet 10 further includes a protective cape 12. The protective cape 12 is connected to the elastic sealing ring 11. When the safety helmet 10 is set on the head and neck, the protective cape 12 is placed on the shoulders.

[0045] Specifically, the protective cape 12 is made of a flame-retardant fiber composite material. The upper edge of the protective cape 12 is fixedly connected to the lower edge of the elastic sealing ring 11 to form an integrated structure. When the helmet 10 is worn, the cape naturally hangs down and covers the user's shoulders, upper chest, and upper back areas, preventing burns to the skin of the neck and shoulders caused by high-temperature radiation and flying sparks in a fire.

[0046] In a specific embodiment, the filtered air intake channel 40 also includes a filter layer 42 and a one-way air intake valve 43, the filter layer 42 is located between the one-way air intake valve 43 and the air intake member 41, and the air intake member 41 is arranged on the side away from the head; when the air intake member 41 is opened, the air intake member 41 blows the external air into the enclosed space through the filter layer 42 and the one-way air intake valve 43, and the filter layer 42 is used to filter and purify the incoming external air.

[0047] Specifically, the filter layer 42 is arranged between the one-way air inlet valve 43 and the air inlet member 41, and uses a composite filter material to efficiently purify the outside air entering the helmet 10, which can remove smoke particles (PM2.5 filtration efficiency ≥ 99.97%) and toxic gases (such as CO, HCN, etc.). The one-way air inlet valve 43 only allows the airflow to enter the helmet 10 in one direction, preventing the airflow from flowing in the opposite direction when the user exhales, maintaining the positive pressure state of the enclosed space, thereby reducing breathing resistance and avoiding the backflow of toxic gases. The air inlet member 41 is an electric fan, and the air inlet member 41 forces the outside air to be pressed into the internal space of the helmet 10, so that the wearer can breathe easily.

[0048] Furthermore, the user turns on the power of the air intake component 41, and the air intake component 41 starts to operate, generating suction. After the outside air is sucked in, it is first purified through the filter layer 42. The purified air pushes the valve of the one-way air intake valve 43 to open and enters the closed space of the helmet 10. Continuous air intake creates a positive pressure environment inside.

[0049] In a specific embodiment, the rescue component 30 includes a lighting lamp 31 and a rescue signal system 32 , wherein the lighting lamp 31 is used for lighting, and the rescue signal system 32 is used for sending a rescue contact signal.

[0050] Specifically, at the fire scene, the lighting conditions are often extremely poor. The lighting lamp 31 can provide the wearer with necessary lighting to help him see the surrounding environment clearly and avoid colliding with obstacles or falling into dangerous areas. The lighting lamp 31 improves the wearer's safety and action efficiency at the fire scene and reduces the risk of accidents caused by unclear vision. The lighting lamp 31 and the rescue signal system 32 are connected to the power supply of the air inlet 41, so that the lighting lamp 31, the rescue signal system 32 and the air inlet 41 share the power supply and control system to achieve linkage and intelligent control. The rescue signal system 32 is an alarm signal transmitter that transmits electronic signals for help and contact to the outside world.

[0051] In a specific embodiment, the filtered air outlet channel 50 has a one-way air outlet valve 51 so that the air exhaled from the mouth and nose is discharged to the external environment through the one-way air outlet valve 51.

[0052] Specifically, the one-way air outlet valve 51 is a key component of the filter outlet passage 50, which allows the exhaled gas from the mouth and nose to be discharged smoothly to the outside environment, while preventing the outside air (including smoke and toxic gases) from flowing back into the helmet 10. It should be noted that a filter layer can also be provided on the filter outlet passage 50, and the filter layer can be provided adjacent to the one-way air outlet valve 51, so as to prevent the outside gas from entering the helmet through the filter outlet passage 50.

[0053] Furthermore, when the wearer exhales, the exhaled gas passes through the filtered air outlet channel 50 and pushes the valve flap of the one-way air outlet valve 51 to open, and the gas is smoothly discharged to the outside environment. When inhaling, the valve flap of the one-way air outlet valve 51 automatically closes under the action of the spring or airflow to prevent the outside air from flowing back into the helmet 10. At the same time, the air inlet inside the helmet 10 inhales clean air through the filter device to provide fresh breathing air for the wearer.

[0054] In a specific embodiment, the filtered air inlet channel 40 further has a connecting port 44 , which is disposed at a side away from the head, and has a threaded groove 441 structure for connecting to an air supply device.

[0055] Specifically, the connection port 44 is an important component of the filtered air intake channel 40, which is located on the side away from the head and is designed with a threaded groove 441 structure. The threaded groove 441 structure is used to connect an external air supply device, such as an air bottle, a respirator, etc. By connecting the external air supply device, continuous and clean breathing air can be provided to the wearer, especially in harsh environments such as fire scenes, when the filtering device inside the helmet 10 cannot meet the long-term breathing needs, the external air supply device can serve as an effective supplement or substitute.

[0056] In a specific embodiment, the air intake member 41 is an electric fan, which is connected to a power module through a circuit. The power module is an external power source connected to the safety helmet 10 or an internal storage battery of the safety helmet 10, and is used to power the electric fan.

[0057] Specifically, the electric fan can actively draw outside air into the helmet 10, avoiding the problem of poor air circulation caused by insufficient breathing of the wearer. It should be noted that the power module can be an external power supply connected to the safety helmet 10; or it can be a power supply battery built into the safety helmet 10, such as a battery. And the power module is connected to the rescue component 30 to provide power to the rescue component 30.

[0058] In a specific embodiment, the safety helmet 10 further includes a buffer suspension strap 60. The buffer suspension strap 60 is provided on the inner wall of the helmet 10. The buffer suspension strap 60 includes a plurality of elastic straps 61 and a plurality of fixing parts 62. The plurality of fixing parts 62 are spaced apart on the helmet 10 and are provided in pairs on the elastic straps 61. And the elastic straps 61 are spaced from the inner wall of the helmet 10. When the helmet 10 is sleeved on the head and neck, the buffer suspension strap 60 fits the top of the head to support the helmet 10.

[0059] Specifically, the elastic strap 61 is made of a high-elasticity and high-temperature-resistant material (such as aramid webbing coated with silicone, etc.), and has good tensile and rebound performance. The fixing part 62 is a fixing structure for installing and fixing the elastic strap 61, and is evenly spaced on the inner wall of the helmet 10, while allowing the elastic strap 61 to maintain a certain distance from the inner wall of the helmet 10. When the helmet 10 is worn, the elastic strap 61 adaptively fits the curve of the user's head top to form a distributed support.

[0060] Furthermore, the fixing part can be a snap-type fixing part, which is a high-strength nylon base formed by injection molding, fixed to the inner wall of the helmet 10 by rivets, and a U-shaped card slot with a spring lock piece can quickly disassemble and assemble the elastic strap; it can also be a sliding track-type fixing part; it can also be a magnetic attraction-type fixing part, by embedding a magnetic ring into the inner wall of the helmet 10 and setting a magnetic conductive connecting piece capable of adsorbing the magnetic ring at the end of the elastic strap, etc.

[0061] Furthermore, the elastic strap 61 absorbs impact energy through deformation to reduce the force on the head. The adjustment tension of the plurality of elastic straps 61 ensures uniform support for different head shapes. By spacing two adjacent fixing parts 62 apart, and since the helmet 10 body is spherical, a certain distance is formed between the elastic strap 61 connected to the two adjacent fixing parts 62 and the inner wall of the helmet 10. Thus, when the outside air passes through the filter and then through the filtered air intake channel 40, it enters the enclosed space inside the helmet 10. The buffer suspension strap 60 prevents direct contact between the helmet 10 and the head when the helmet 10 is worn on the head, thereby affecting the air circulation.

[0062] The present application provides a protection method for a fire safety helmet 10, which is applied to the above-mentioned fire safety helmet 10 for smoke and poison prevention. The protection method is as follows: Before entering a fire scene with poisonous gas and smoke, wear the safety helmet 10 on the head, with the perspective window 20 facing the eyes and the elastic sealing ring 11 fitting the neck, and turn on the rescue component 30 and the air intake component 41. The air intake component 41 passes the outside air through the filtered air intake channel 40, blows the outside air through the filter layer 42 and the one-way air intake valve 43, purifies the outside air into processed air, and stores the processed air in a closed space. When a person inhales, the processed air in the closed space enters the person's mouth and nasal cavity; when a person exhales, the air exhaled from the mouth and nasal cavity is discharged through the filtered air outlet channel 50.

[0063] Specifically, the filtered air intake channel 40 connects the outside with the closed space, only allowing the outside air to enter the closed space inside the helmet 10 through the filtered air intake channel 40, and is equipped with an air intake component 41 to enhance the air intake efficiency. The air intake channel actively conveys the filtered clean air, making the air pressure in the closed space slightly higher than the outside, and enabling the outside air to easily enter the closed space inside the helmet 10 through the air intake component 41. The air in the spaced closed space between the helmet 10 and the head can supply the wearer with smooth breathing. The filtered air intake channel 40 prevents the outside poisonous smoke from directly entering the helmet 10 and contacting the face and respiratory system. The outside poisonous smoke is filtered through the filtered air intake channel 40 to obtain processed air. It should be noted that the protection method of the safety helmet 10 provided in the present application is the same as the above process during use, and will not be elaborated here one by one.

[0064] Therefore, the above-mentioned fire safety helmet 100 for smoke and poison prevention is composed of the helmet 10 main body, the elastic sealing ring 11, the perspective window 20, the rescue component 30, the filtered air intake channel 40 and the filtered air outlet channel 50. When worn on the head and neck, it can form a closed space, with filtered air intake and outlet channels and the corresponding air intake component 41 inside. This design overcomes the defects of the prior art. The air intake component 41 conveys the outside air to make the internal air pressure greater than the outside, and makes it convenient for the air to enter the helmet 10; the filtering structure is optimized, reducing the breathing resistance while ensuring a certain filtering efficiency, blocking the intrusion of poisonous gas, and facilitating escape and rescue; and each component cooperates to solve the problems of the integration of fire prevention and poison prevention functions and simultaneous wearing, effectively isolating smoke and poisonous gas, especially being able to efficiently solve the actual scenario requirements of "in most cases, people are first trapped by smoke and poisonous gas rather than being burned by fire first and having difficulty escaping" for the personnel at the fire scene, improving the survival probability and operation ability of users in the fire scene, and expanding the actual application effect of the protective equipment.

[0065] The above are only the implementation manners of the present application. It should be noted here that for those of ordinary skill in the art, without departing from the creative concept of the present application, improvements can still be made, but these all belong to the protection scope of the present application.

Claims

1. A fire safety helmet for smoke and poison prevention, which is applied to a fire with poisonous gas and smoke, and is characterized in that The safety helmet includes a helmet body and an elastic sealing ring connecting the helmet. The elastic sealing ring is sleeved on the neck, the helmet is sleeved on the head, and the helmet is spaced from the head to form a closed space; A perspective window is provided on the helmet and is disposed opposite the eyes; A rescue component is disposed adjacent to the perspective window on the helmet for lighting and sending rescue contact signals; Wherein, when the helmet is sleeved on the head and neck, the helmet is provided with a filtered air intake channel and a filtered air outlet channel. The filtered air intake channel communicates the closed space with the external environment. The filtered air intake channel has an intake member for blowing external gas into the closed space so that the internal air pressure of the closed space is greater than the external air pressure. One end of the filtered air outlet channel is directly opposite the mouth and nose, and the other end communicates with the external environment so that the gas exhaled from the mouth and nose is discharged to the external environment through the filtered air outlet channel.

2. The fire safety helmet for smoke and poison prevention according to claim 1, characterized in that, The safety helmet further includes a protective cape. The protective cape is connected to the elastic sealing ring. When the safety helmet is sleeved on the head and neck, the protective cape is placed at the shoulder.

3. A fire safety helmet for smoke and gas prevention, as claimed in claim 1, wherein, The filtered air intake channel further includes a filter layer and a one-way intake valve. The filter layer is located between the one-way intake valve and the intake member, and the intake member is disposed on the side away from the head; When the intake member is opened, the intake member blows external gas into the closed space through the filter layer and the one-way intake valve, and the filter layer is used for filtering and purifying the entering external gas.

4. A fire safety helmet for smoke and poison prevention, according to claim 1, characterized in that, The rescue component includes a lighting lamp and a rescue signal system. The lighting lamp, the rescue signal system are electrically connected to the power supply of the intake member, and the rescue signal system is used for sending rescue contact signals.

5. A fire safety helmet for smoke and poison prevention, according to claim 1, characterized in that, The filtered air outlet channel has a one-way outlet valve to discharge the gas exhaled from the mouth and nose to the external environment through the one-way outlet valve.

6. A fire safety helmet for smoke and poison prevention, according to claim 1, characterized in that, The filtered air intake channel further has a connection port. The connection port is disposed on the side away from the head, and the connection port has a threaded groove structure for connecting a gas supply device.

7. A fire safety helmet for smoke and gas prevention, according to claim 1, characterized in that, The intake member is an electric fan. The electric fan is electrically connected to a power module. The power module is an external power supply connected to the safety helmet or an internal storage battery of the safety helmet for supplying power to the electric fan.

8. A fire safety helmet for smoke and poison prevention, according to claim 1, characterized in that, The safety helmet further includes a buffer suspension strap. The buffer suspension strap is disposed on the inner wall of the helmet. The buffer suspension strap includes a plurality of elastic bands and a plurality of fixing parts. The plurality of fixing parts are spaced on the helmet and are respectively disposed on the elastic bands in pairs, and the elastic bands are spaced from the inner wall of the helmet. When the helmet is sleeved on the head and neck, the buffer suspension strap fits with the top of the head to support the helmet.

9. A fire safety helmet for smoke and poison prevention, according to claim 4, characterized in that, The rescue signal system is an alarm signal transmitter.

10. A protection method for a fireproof safety helmet, which is applied to the fireproof safety helmet for preventing smoke and poison in claims 1-9 above, characterized in that, Before entering a fire scene with poisonous gas and smoke, wear the safety helmet on the body, with the perspective window facing the eyes and the elastic sealing ring fitting the neck. Then turn on the rescue component and the air intake component. The air intake component blows the outside air through the filter intake channel over the filter layer and the one-way intake valve, filters and purifies the outside air into processed air, and stores the processed air in a closed space. When a person inhales, the processed air in the closed space enters the person's mouth and nasal cavity; when a person exhales, the air exhaled from the mouth and nasal cavity is discharged through the filter exhaust channel.

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