Smoke-proof head cover

The smoke-proof head cover addresses the limitations of conventional smoke hoods and masks by offering extended air supply and compact storage, facilitating safe evacuation and emergency preparedness.

JP2026087004APending Publication Date: 2026-05-27HOCHIKI CORP

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
HOCHIKI CORP
Filing Date
2024-11-15
Publication Date
2026-05-27

AI Technical Summary

Technical Problem

Conventional smoke hoods and masks have limited air supply duration and require large storage space, making it difficult to prepare sufficient quantities for emergency evacuations.

Method used

A smoke-proof head cover made of transparent synthetic resin with a foldable design, incorporating a hand pump and air intake pipe, allowing for extended air supply and compact storage.

Benefits of technology

Enables safe evacuation by providing at least 3 minutes of breathable air, maintaining visibility, and allowing for sufficient storage of multiple units in a small space, ensuring effective emergency preparedness.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026087004000001_ABST
    Figure 2026087004000001_ABST
Patent Text Reader

Abstract

By folding them into a small size, the required number can be stored in a small space, enabling the safe evacuation of people in smoke-filled conditions caused by fire. [Solution] The smoke-proof head cover 10 worn by an evacuee 18 evacuating from a place where a fire is occurring is a transparent synthetic resin sheet that covers the head of the evacuee 18, and comprises a bag-shaped cover body 12, a closing string 14 that tightens the opening of the bag of the cover body 12 attached to the head of the evacuee 18 around the evacuee's neck to close it, and a mouthpiece 16 attached to the cover body 12 that the evacuee 18 holds in their mouth to allow exhalation or inhalation to and from the outside.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to a smoke-proof head cover that can be worn by evacuees in a situation where they are engulfed in smoke during a fire to enable safe evacuation.

Background Art

[0002] Conventionally, as a disaster prevention tool that enables safe evacuation even when engulfed in smoke during a fire, a smoke hood has been proposed (Patent Document 1) and is also commercially available. Commercially available smoke-proof head covers are, for example, bags made of transparent synthetic resin with a capacity of about 40 liters, such as plastic bags, and by wearing them, evacuees can evacuate without inhaling smoke.

[0003] In addition, a simple emergency evacuation mask is also known (Patent Document 2) in which a container for storing air is connected to a smoke-proof mask worn on the face of an evacuee, and a small manual pump is connected to the smoke-proof mask by an air supply pipe.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the conventional smoke hood of Patent Document 1, although there is an advantage that it can be stored in a small space by folding it small, the time during which an evacuee can evacuate while wearing the smoke hood is as short as 2 to 3 minutes during which the air inside the hood can be inhaled, and this is too short a time to evacuate from a place engulfed in smoke to a safe place, which remains as a problem.

[0006] Furthermore, the emergency evacuation mask described in Patent Document 2 uses a smoke mask, an air reservoir, and a small manual pump. Therefore, when storing these in a home or other location, a relatively large storage space is required. For example, when preparing and storing enough emergency evacuation masks to accommodate the expected number of evacuees, such as an entire family, the number of masks that can be stored is limited due to installation space and cost constraints, potentially leading to a shortage in times of emergency.

[0007] The present invention aims to provide a smoke-proof head cover that can be folded compactly to store the required number in a small space, thereby enabling the safe evacuation of evacuees in situations where they are enveloped in smoke caused by a fire. [Means for solving the problem]

[0008] (Smoke-proof head cover) The present invention relates to a smoke-proof head cover worn by evacuees evacuating from a place where a fire is occurring, The cover body is made of a transparent synthetic resin sheet that is attached to cover the head of the evacuee, forming a bag-like structure. The cover, which is attached to the head of the evacuee, has a drawstring that tightens around the evacuee's neck to close the opening of the bag, A mouthpiece attached to the main body of the cover, which the evacuee holds in their mouth to allow them to exhale or inhale to and from the outside, It is characterized by having the following features.

[0009] (Air filling capacity of the cover body) The cover itself has an air-filling capacity that allows evacuees to breathe for a predetermined period of time when worn on their heads.

[0010] (Specific example of the air filling capacity of the cover body) The cover itself has an air-filling capacity that allows evacuees to breathe for more than 3 minutes while wearing it on their heads.

[0011] (Hand pump) Also, the smoke-proof head cover is The cover is equipped with a hand pump (air inflator) that is connected to the main body of the cover via an air intake pipe and is manually operated by the evacuee to compress outside air and supply it into the main body of the cover.

[0012] (Sheet piping) The air intake piping is a foldable sheet pipe made by forming a synthetic resin sheet into a tubular shape. [Effects of the Invention]

[0013] (Effect of smoke-proof head cover) The present invention relates to a smoke-proof head cover to be worn by evacuees evacuating from a fire, comprising: a cover body formed in the shape of a bag from a transparent synthetic resin sheet that covers the evacuee's head; a closing string that tightens around the evacuee's neck to close the opening of the bag of the cover body worn on the evacuee's head; and a mouthpiece attached to the cover body that the evacuee holds in their mouth to allow exhalation or inhalation to and from the outside. Because the cover body is formed in the shape of a bag from a transparent synthetic resin sheet, it can be folded into a smaller size, for example, by folding it into four or eight, even including the closing string and mouthpiece. For example, even if there are enough smoke-proof head covers for the whole family plus some spares, they can be stored in a small space, and the cost per cover is also low, making it possible to prepare a sufficient number in preparation for a fire.

[0014] Furthermore, since the cover itself is formed in a bag shape from a transparent synthetic resin sheet, the air-filled state can be easily determined by the degree of inflation of the bag, enabling evacuation while appropriately judging the remaining amount of air.

[0015] Furthermore, since the cover itself is formed in a bag shape from a transparent synthetic resin sheet, it ensures that the wearer's vision is reliably maintained when wearing it on their head.

[0016] In addition, the cover body has a mouthpiece. By biting the mouthpiece, the evacuee wearing the cover body can breathe in the air inside the cover body through the nose and exhale it outside through the mouthpiece in the smoke, enabling safe evacuation without inhaling the smoke. Also, when the smoke thins or disappears during evacuation, the evacuee can breathe through the mouth through the mouthpiece, and it is possible to save air without inhaling the air inside the head cover. Further, the air exhaled by the evacuee is discharged from the mouthpiece to the outside of the cover body, so the oxygen concentration of the air inside the cover body does not decrease, and the inside of the cover body does not become cloudy due to the water vapor contained in the exhaled breath.

[0017] (Effect of the air filling capacity of the cover body) Moreover, the cover body has an air filling capacity that enables breathing for a predetermined time with the filled air when worn on the head of the evacuee. The air filling capacity is arbitrary, but for example, it has an air filling capacity that enables breathing for 3 minutes or more. Therefore, when the evacuee wears the cover body, by opening and waving the mouth of the cover body, a sufficient evacuation distance can be ensured with the amount of filled air. For example, when the moving speed of the evacuee is 1 meter per second, it is possible to move about 180 meters during the 3 minutes of breathing possible with the smoke-proof head cover.

[0018] (Effect of the hand pump) In addition, the smoke-proof head cover has a hand pump (air pump) connected to the cover body via an air introduction pipe, which compresses the outside air manually by the evacuee and supplies it into the cover body. Therefore, by operating the hand pump according to the need of the evacuee to supply and fill fresh air into the cover body, continuous use exceeding the breathable time corresponding to the air filling capacity of the cover body becomes possible.

[0019] (Effect of the sheet pipe) In addition, the air introduction pipe connecting the hand pump to the cover body is a foldable sheet pipe formed by shaping a synthetic resin sheet into a tubular shape. Therefore, it can be folded small together with the cover body, and even if there are dust-proof head covers in a number obtained by adding a spare to the required number, they can be stored in a small space, and it becomes possible to prepare a sufficient number to prepare for a fire.

Brief Description of the Drawings

[0020] [Figure 1] It is an explanatory diagram showing an evacuee wearing a smoke-proof head cover. [Figure 2] It is an explanatory diagram showing a state in which an embodiment of the smoke-proof head cover is developed. [Figure 3] It is an explanatory diagram showing the folded storage of the smoke-proof head cover. [Figure 4] It is an explanatory diagram showing the mouthpiece of the smoke-proof head cover taken out. [Figure 5] It is an explanatory diagram showing another embodiment of the smoke-proof head cover connected to a hand pump via a sheet pipe.

Mode for Carrying Out the Invention

[0021] Hereinafter, embodiments of the smoke-proof head cover according to the present invention will be described based on the drawings. Note that the present invention is not limited by the following embodiments.

[0022] [Basic Concept of the Embodiment] First, the basic concept of the embodiment will be described. The embodiment relates to a smoke-proof head cover worn by an evacuee evacuating from a place where a fire has occurred.

[0023] Here, the "protective head cover" is removably stored in a plurality of residential areas such as houses and dwelling units to be protected, for example, in a living room. When a fire occurs, an evacuee such as a resident wears it in a state filled with air so as to cover the head, and it enables safe evacuation by allowing breathing even in a situation where smoke is diffusing.

[0024] The "smoke-proof head cover" comprises a cover body, a closing string, and a mouthpiece. The "cover body" is a transparent synthetic resin sheet formed into a bag shape that covers the head of the evacuee. The "closing string" is used to tighten the opening of the cover body around the evacuee's neck when it is worn on the evacuee's head. The "mouthpiece" is attached to the cover body and is held in the evacuee's mouth to allow them to exhale or inhale to and from the outside.

[0025] As the cover itself is formed in a bag shape from a transparent synthetic resin sheet, it can be folded into a smaller size, such as four or eight times, even including the closing string and mouthpiece. This allows for storage in a small space even for the number of dustproof head covers needed for the whole family plus some spares. Furthermore, the low cost per cover makes it possible to prepare a sufficient number in case of a fire.

[0026] Furthermore, since the "cover body" is formed in a bag shape from a transparent synthetic resin sheet, the air-filling status can be easily determined by the degree of inflation of the bag, allowing for appropriate assessment of the remaining air volume and prompt filling with fresh air. In addition, because the "cover body" is formed in a bag shape from a transparent synthetic resin sheet, it ensures that visibility is reliably maintained when worn on the head by an evacuee.

[0027] Furthermore, the "mouthpiece" allows evacuees wearing the cover to breathe by holding the mouthpiece in their mouths. In smoke-filled environments, they can inhale air from inside the cover through their nose and exhale it through the mouthpiece, enabling safe evacuation without inhaling smoke. If the smoke thins or disappears during evacuation, evacuees can breathe through their mouths using the mouthpiece, conserving air from inside the head cover. Additionally, since the exhaled air is released outside the cover through the mouthpiece, the oxygen concentration inside the cover does not decrease due to exhalation, and the inside of the cover does not fog up due to water vapor from exhalation.

[0028] Furthermore, the "cover body" has an air-filling capacity that allows evacuees to breathe for a predetermined period of time when worn on their heads. While the air-filling capacity is arbitrary, it is designed to provide enough air for, for example, more than 3 minutes of breathing. Therefore, when an evacuee puts on the cover body, they can fill it with air by opening the mouth of the cover body and shaking it, ensuring they can cover a sufficient distance to evacuate. For example, if an evacuee moves at a speed of 1 meter per second, they can move approximately 180 meters during the 3 minutes they can breathe while wearing the smoke-proof head cover.

[0029] Another embodiment of the smoke-proof head cover includes a hand pump (air inflator) connected to the main body of the cover via an air intake pipe, which is manually operated by the evacuee to compress external air and supply it into the main body of the cover. Therefore, by supplying and filling the head cover with fresh air through the operation of the hand pump as needed by the evacuee, continuous use beyond the breathing time corresponding to the air filling capacity of the main body of the cover becomes possible.

[0030] Furthermore, the air intake piping connecting the hand pump to the cover body is a foldable sheet piping made of synthetic resin sheet formed into a tubular shape. As a result, the sheet piping can also be folded up together with the cover body, allowing even the required number of dustproof head covers plus spares to be stored in a small space, and enabling the preparation of a sufficient number to be ready in case of a fire.

[0031] The following describes a specific embodiment of the smoke-proof head cover. The details are explained in the following sections. a. Smoke-proof head cover a1. Installation of smoke-proof head cover a2. Cover body a3. Folding and storage of the cover itself a4. Mouthpiece a5. How to use the smoke-proof head cover b. Other embodiments of smoke-proof headcovers c. Modified form of the present invention

[0032] [a. Smoke-proof head cover] Next, an embodiment of the smoke-proof head cover will be described. In this description, refer to Figure 1, which shows an evacuee wearing the smoke-proof head cover.

[0033] (a1. Installation of smoke-proof head cover) As shown in Figure 1, the smoke-proof head cover 10 is secured around the neck by an evacuee 18 who puts it over their head by widening the lower opening of the cover body 12, which is formed in the shape of a bag from a transparent resin sheet, and tightening the opening with a drawstring 14. Since the cover body 12 is formed in the shape of a bag from a transparent synthetic resin sheet, visibility is reliably ensured when it is worn on the head of the evacuee 18.

[0034] A mouthpiece 16 is provided at a predetermined position on the cover body 12 where the mouth of the evacuee 18 is located. The mouthpiece 16 is a component that the evacuee 18 holds in their mouth and uses for breathing. The evacuee 18 breathes by inhaling air from inside the cover through their nose while holding the mouthpiece 16 in their mouth, and exhaling air from the mouthpiece 16 to the outside; that is, they breathe by inhaling through their nose and exhaling through their mouth.

[0035] In this way, by having the evacuee 18 hold the mouthpiece 16 provided on the cover body 12 in their mouth, they can safely evacuate without inhaling smoke by breathing in the air inside the cover body 12 through their nose and exhaling it through the mouthpiece 16 when surrounded by smoke. Furthermore, if the smoke thins or disappears during the evacuation, the evacuee 18 can breathe through their mouth using the mouthpiece 16, thus conserving the air inside the cover body 12 by not inhaling it. In addition, since the air exhaled by the evacuee 18 is released to the outside of the cover body 12 through the mouthpiece 16, the oxygen concentration of the air inside the cover body 12 does not decrease, and the inside of the cover body 12 does not fog up due to water vapor contained in the exhaled breath.

[0036] (a2. Cover body) Next, the cover body will be described. For this description, please refer to Figure 2, which shows an embodiment of the smoke-proof head cover in an unfolded state. Figure 2(A) shows the front view, and Figure 2(B) shows the side view.

[0037] As shown in Figure 2, the cover body 12 of the smoke-proof head cover 10 is made of a transparent synthetic resin sheet, for example, a transparent polyethylene sheet formed into a bag shape. The air-filling capacity (volume) of the cover body 12 is determined by the vertical H and horizontal L dimensions of the cover body 12, which is rectangular when unfolded.

[0038] The vertical H and horizontal L lengths of the cover body 12 are arbitrary, but for example, if the vertical H=60cm and horizontal L=50cm is made into a small size, the air filling capacity will be approximately 30 liters; if the vertical H=70cm and horizontal L=60cm is made into a medium size, the air filling capacity will be approximately 40 liters; and if the vertical H=80cm and horizontal L=60cm is made into a large size, the air filling capacity will be approximately 45 liters.

[0039] Here, the actual air-filled capacity of the cover body 12 when worn on the head of an evacuee is the capacity after subtracting the volume of the evacuee's head. If the volume of the evacuee's head is, for example, 7 liters, then the capacity would be approximately 23 liters for the small size, approximately 33 liters for the medium size, and approximately 38 liters for the large size.

[0040] Furthermore, since it is known that a person needs about 7 liters of air per minute to breathe, the breathing time when an evacuee wears the cover body 12 will be approximately 3.2 minutes for the small size, approximately 4.7 minutes for the medium size, and approximately 5.4 minutes for the large size. Also, assuming an evacuee's movement speed is 1 meter per second, the distance an evacuee wearing the cover body 12 can move will be approximately 190 meters for the small size, approximately 280 meters for the medium size, and approximately 325 meters for the large size.

[0041] The actual distance that can be traveled will be shorter than this because the air in the cover body 12 will not be completely sucked out. However, for example, it will be possible to travel approximately 150m for the small size, 250m for the medium size, and 300m for the large size, ensuring a sufficient distance of travel with a single air filling. The relationship between the air filling capacity of the cover body 12 and the distance that can be traveled by evacuees should be determined through experiments in which subjects wear the smoke-proof head cover and move around.

[0042] Here, the polyethylene sheet used for the cover body 12 has a heat resistance temperature of 60°C to 80°C. However, if the cover body 12 requires an even higher heat resistance temperature, a polypropylene sheet with a higher heat resistance temperature of, for example, 80°C to 120°C can be used. However, since polypropylene sheets are less transparent, the sheet surface on which the mouthpiece 16 of the cover body 12 is placed can be made of highly transparent polyethylene sheet, and the opposite side can be made of highly heat-resistant polypropylene sheet, or the sheet surface facing the evacuee's face, including the mouthpiece 16, can be made of highly transparent polyethylene sheet, and the rest can be made of highly heat-resistant polypropylene sheet. Note that the heat-resistant sheet is not limited to polypropylene sheet and includes any appropriate heat-resistant sheet.

[0043] The closing string 14 can be passed alternately through multiple notches formed along the opening of the cover body 12, for example, to tighten the opening of the cover body 12. As shown in Figure 1, the closing string 14 is pulled to the extent that it lightly tightens around the neck of the evacuee 18 and then secured with the lock pin 1410.

[0044] (a3. Folding and storing the cover itself) Next, we will explain how to fold and store the cover body for storing the smoke-proof head cover. For this explanation, please refer to Figure 3, which shows how to fold and store the smoke-proof head cover. Figure 3(A) shows the folds in the unfolded state, and Figure 3(B) shows the folded state.

[0045] As shown in Figure 3(A), the unfolded cover body 12 can be folded to a small size, as shown in Figure 3(B), by folding it horizontally five times and vertically three times, as indicated by the dotted lines, so that the width L is L / 5 and the height H is H / 3. For example, if the height H=70cm and width L=60cm is the medium size, it can be folded to a small size of approximately 23cm in height and 12cm in width, with a thickness of about 1-2cm.

[0046] Furthermore, as the cover body 12 is folded, the closing string 14 and mouthpiece 30 are also gathered inside or around the folded cover body 12. In addition, the smoke-proof head cover 10, when folded as shown in Figure 3(B), can be stored in a plastic bag or the like for easier handling.

[0047] (a4. Mouthpiece) Next, we will describe the mouthpiece provided on the cover body. For this description, please refer to Figure 4, which shows the mouthpiece of the smoke-proof head cover removed from the cover.

[0048] As shown in Figure 4, the mouthpiece 16 is made of a synthetic resin such as polyethylene, and a mouthpiece tube 1610 with a ventilation hole 1611 passing through it is positioned inside the cover body 12, and an outlet cover 1612 positioned outside the cover body 12 is fixed to the tip (left end) of the mouthpiece tube 1610. The mouthpiece 16 is fixed to the cover body 12 by tightening a contact surface 1620 formed on the bottom of the outlet cover 1612 and a fixing flange 1616 formed on the mouthpiece tube 1610 with a screw portion 1614, with the cover body 12 interposed between them.

[0049] A curved mouth rest 1618 is integrally formed in the middle of the mouthpiece tube 1610. When an evacuee holds the mouthpiece tube 1610 in their mouth, they can hold the mouth rest 1618 against their lips to prevent the mouthpiece 16 from moving. The length of the mouthpiece tube 1610 is arbitrary, but a size similar to the opening of a plastic bottle is preferable, so approximately 2-3 cm is desirable. The outer diameter of the mouthpiece tube 3010 is also arbitrary, but a predetermined value within the range of 1.5-2.0 cm, for example 1.8 cm, is desirable to minimize fatigue even when held in the mouth for extended periods.

[0050] Furthermore, the mouthpiece 1618 should be positioned at a predetermined distance from the fixing flange 1610 so that the cover body 12 does not obstruct nasal inhalation when the evacuee holds the mouthpiece tube 1610 in their mouth. In addition, it is desirable that the mouthpiece 16 be colored in a predetermined color, such as yellow, so that it is easily identifiable when the evacuee puts on the smoke-proof head cover 10. The shape of the blowing cover 1612 is arbitrary, and it is also possible to omit the blowing cover 1612 and only have a ring plate with a contact surface 1620.

[0051] (a5. How to use the smoke-proof head cover) Next, we will explain how to use the smoke-proof head cover. As shown in Figure 3(B), the smoke-proof head cover 10 is folded into a small size when stored. The storage method of the smoke-proof head cover 10 is arbitrary, but in a home, the number needed by the family plus spares are stored in an emergency kit or similar. In an office, the number of smoke-proof head covers 10 plus spares for the employees are stored in an emergency supplies storage shelf or similar.

[0052] When a fire breaks out and evacuees 18 are enveloped in smoke, they take out the smoke-proof head cover 10 which is stored in a folded state, unfold the cover body 12 as shown in Figure 2, open the opening where the closing string 14 is located and shake it to fill the cover body 12 with air, and as shown in Figure 1, put the inflated cover body 12 over their heads, close the opening with the closing string 14 and lightly tighten it around their necks to secure it.

[0053] Next, the evacuee 18 puts the mouthpiece 16 attached to the cover body 12 into their mouth, allowing them to breathe outside air. If there is no smoke in the surroundings, or if the smoke is thin enough to allow breathing, the air filled inside the cover body 12 is not used, and the evacuee evacuates by breathing outside air through the mouthpiece 16.

[0054] During evacuation, if passing through an area filled with dense smoke that makes breathing difficult, it is possible to evacuate safely without inhaling smoke by using a breathing method in which air is inhaled through the cover body 12 through the nose and exhaled out through the mouthpiece 16. This breathing method ensures an evacuation time of at least 3 minutes, during which the evacuation distance is, for example, about 150m, allowing the wearer to pass through the smoke-filled area where breathing is difficult and reach a safe place.

[0055] Here, it is desirable to provide prior explanation or training on breathing techniques for evacuees 18 when they evacuate while wearing smoke-proof head covers 10. For example, in general households, on Disaster Prevention Day, people should understand how to use the smoke-proof head cover 10 by referring to the instruction manual, etc., and practice actually wearing and using the smoke-proof head cover 10. In addition, businesses that manufacture and sell smoke-proof head covers may upload videos demonstrating how to use the smoke-proof head cover to their websites or other online platforms for public viewing.

[0056] [b. Other embodiments of smoke-proof head covers] Next, other embodiments of the smoke-proof head cover will be described. In this description, refer to Figure 5, which shows an evacuee wearing a smoke-proof head cover of another embodiment.

[0057] As shown in Figure 5, the smoke-proof head cover 10 of this embodiment is composed of a cover body 12, a closing string 14, and a mouthpiece 16, similar to those shown in Figures 1 to 4. In addition, a hand pump 20 is newly connected to the cover body 12 by a sheet pipe 22.

[0058] The structure and type of the hand pump 20 are arbitrary, but for example, a commercially available hand pump (small air pump) used for inflating balloons, inflatable rings, etc. can be used.

[0059] Furthermore, the sheet piping 22 functions as a flexible air supply pipe connecting the hand pump 20 to the cover body 12, and has a foldable structure formed from a synthetic resin sheet in a tubular shape. As a result, as shown in Figure 3, the cover body 12, including the sheet piping 20, can be folded into a small size, allowing for storage in a small space.

[0060] Alternatively, a small oxygen canister or small air canister may be connected instead of the hand pump 20. In this case, the small oxygen canister or small air canister may be connected from the beginning, or the small oxygen canister or small air canister may be stored separately and used by evacuees by connecting it to the smoke-proof head cover. Alternatively, the hand pump may be removed and the small oxygen canister or small air canister may be connected.

[0061] [c. Variations of the present invention] Modifications of the smoke-proof head cover according to the present invention will now be described. In addition to the embodiments described above, the smoke-proof head cover of the present invention includes the following modifications.

[0062] The smoke-proof head cover 10 of this embodiment is not limited to use in buildings such as houses and office buildings. For example, it may be used in fire hydrant systems installed as emergency equipment in tunnels such as highways and expressways, where multiple smoke-proof head covers 10 are stored in a folded state in fire hydrant devices installed along the side wall of the guard's passage, for example, at intervals of 50 meters, and used for evacuation in the event of a fire caused by a vehicle accident or the like. In this case, if, for example, 20 to 30 smoke-proof head covers 10 are stored in the fire hydrant device, it will be possible to use the smoke-proof head covers 10 without shortage in the event of a fire. Furthermore, the smoke-proof head cover of this embodiment does not require replacement due to expiration dates when using air cylinders or oxygen cylinders, enabling a significant reduction in maintenance costs.

[0063] Furthermore, the smoke-proof head cover 10 of this embodiment can be used as a disaster prevention tool for high-speed trains that travel through tunnels, such as linear motor cars, by storing a number of smoke-proof head covers 10 corresponding to the number of passengers in the train and tunnel, making them available for use in the event of a fire.

[0064] (others) Furthermore, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of Symbols]

[0065] 10: Smoke-proof head cover 12: Cover body 14: Closing string 1410: Lock pin 16: Mouthpiece 1610: Mouthpiece 1611: Ventilation holes 1612: Blower cover 1614: Threaded part 1616: Fixed flange 1618: Mouthguard 1620: Contact surface 18: Evacuee 20: Hand pump 22: Sheet Piping

Claims

1. A smoke-proof head cover worn by evacuees evacuating from a fire, A transparent synthetic resin sheet that is worn to cover the head of the evacuee, comprising a cover body formed in the shape of a bag, The cover body, which is attached to the head of the evacuee, has a drawstring that tightens around the evacuee's neck to close the opening of the bag, A mouthpiece attached to the cover body, which the evacuee holds in their mouth to allow them to exhale or inhale to the outside, A smoke-proof head cover characterized by having the following features.

2. A smoke-proof head cover according to claim 1, The smoke-proof head cover is characterized in that the cover body has an air-filling capacity that allows the evacuee to breathe for a predetermined period of time using the filled air when the cover is worn on their head.

3. A smoke-proof head cover according to claim 1, The smoke-proof head cover is characterized in that the cover body has an air-filling capacity that allows the evacuee to breathe for three minutes or more while wearing it on their head.

4. A smoke-proof head cover according to claim 1, A smoke-proof head cover characterized by being equipped with a hand pump connected to the cover body via an air intake pipe, which compresses external air and supplies it into the cover body through manual operation by the evacuee.

5. A smoke-proof head cover according to claim 4, The smoke-proof head cover is characterized in that the air intake piping is a foldable sheet piping made of a synthetic resin sheet formed into a tubular shape.