WO2022113870A1

WO2022113870A1 - Windshield for bonfire

Info

Publication number: WO2022113870A1
Application number: PCT/JP2021/042397
Authority: WO
Inventors: 貴旭桐山; 義哲権; 祐司 ▲高▼橋; 陽濱野
Original assignee: 東洋紡株式会社
Priority date: 2020-11-30
Filing date: 2021-11-18
Publication date: 2022-06-02
Also published as: JP2022086411A; JP7226422B2

Abstract

This windshield (1) for a bonfire includes a fabric structure which has an open bottom surface, is made of fabric, and has a conical or polygonal shape, wherein the fabric structure comprises: one or two slits (S1, S2) reaching a height of 1/4 to 9/10 of the height of the fabric structure from the bottom surface of the fabric structure; and an open area (107) which is at a different position than the slits (S1, S2) and reaches a height of 1/3-2/3 to a height of 3/4-9/10 of the height of the fabric structure from the bottom surface of the fabric structure, and the fabric structure is made of a highly flame retardant material.

Description

Bonfire windshield

This disclosure relates to a bonfire windshield used outdoors.

Conventionally, a lightweight and inexpensive assembly-type windshield device has existed, but it has not been applicable to a bonfire with high thermal power (Patent Document 1).

Japanese Unexamined Patent Publication No. 2002-42522

As the camp population increased, so did the number of people who bonfire. Under such circumstances, it is required to be able to bonfire more safely and comfortably. The cause of accidents and discomfort that occurs is that the smoke, odor, sparks, etc. generated by the bonfire are scattered and diffused by the wind. However, there is no product that actually suppresses this efficiently.

In recent years, the ease of transporting and installing camping equipment has become more important. A wood stove or the like can achieve the above purpose, but it is heavy and difficult to install and transport.

The purpose of this disclosure is to provide a bonfire windshield that is lightweight and easy to set up, yet enables safe and comfortable bonfire enjoyment.

According to a certain aspect of the bonfire windshield of the present disclosure, it is a bonfire windshield having a conical or polygonal weight-shaped cloth structure having an open bottom surface and being composed of cloth, wherein the cloth structure is the cloth structure. 1 or 2 slits from the bottom opening of the fabric structure to a height of 1/4 to 9/10 of the height of the fabric structure, and at a position different from the slits, from the bottom surface of the fabric structure to the above. The fabric structure has an opening region ranging from 1/3 to 2/3 in height to 3/4 to 9/10 in height with respect to the height of the fabric structure, and the fabric structure is highly flame-retardant. It is a material.

In the windshield for bonfire, the second virtual straight line formed when the first virtual straight line connecting the midpoint of the intersection of the slit and the bottom of the cloth structure and the apex of the cloth structure is projected onto the bottom surface. The angle between the opening center of the opening region and the fourth virtual straight line formed when the third virtual straight line connecting the apex is projected onto the bottom surface is between 30 degrees and 180 degrees.

In the bonfire windshield, the second height from the bottom opening to the lower end of the opening region is [first height × 0.9] with respect to the first height of the slit from the bottom opening. Satisfy the relationship of <second height].

In the windshield for bonfire, the opening area of the opening region is [total side area x 0.02 <opening area <total side area x 0.] with respect to the total side area of all the side areas of the fabric structure. 3] is satisfied.

In the bonfire windshield, the fabric is made of organic fibers.
In the above-mentioned windshield for bonfire, the above-mentioned organic fiber is composed of one or more kinds of fibers selected from polyphenylene sulfide fiber, PEEK fiber, meta-aramid fiber, para-aramid fiber, polybenzol fiber, and flame-resistant acrylic fiber.

In the above-mentioned bonfire windshield, the above-mentioned organic fiber is a polybenzoxazole (PBO) fiber.

According to this disclosure, it is possible to provide a bonfire windshield that makes it possible to enjoy the bonfire comfortably.

It is a perspective view from the front side of the bonfire windshield of Embodiment 1. FIG. It is a perspective view from the back side of the bonfire windshield of Embodiment 1. FIG. It is a top view of the windshield for a bonfire of Embodiment 1. FIG. It is a perspective view of another form from the front side of the bonfire windshield of Embodiment 1. FIG. It is a perspective view of another form from the front side of the bonfire windshield of Embodiment 1. FIG. It is a figure which shows the flame retardant property of Zylon (registered trademark). It is a figure which shows the texture characteristic comparison of the cloth used for the bonfire windshield of Embodiment 1 and other cloths. It is a figure which shows the LOI value of various cloths. It is a perspective view which shows the use form of the bonfire windshield of Embodiment 1. FIG. It is a perspective view which shows the other use form of the bonfire windshield of Embodiment 1. FIG. It is a perspective view from the front side of the bonfire windshield of Embodiment 2. It is a rear view of the bonfire windshield of Embodiment 3. It is a perspective view from the back side of the bonfire windshield of Embodiment 4. It is a 1st front view of the bonfire windshield of Embodiment 5. It is a 2nd front view of the bonfire windshield of Embodiment 5. It is a rear view of the bonfire windshield of Embodiment 5. It is a perspective view from the front side of the bonfire windshield of Embodiment 6. It is a 1st perspective view from the front side of the bonfire windshield of Embodiment 7. It is a second perspective view from the front side of the bonfire windshield of Embodiment 7. It is a perspective view from the back side of the bonfire windshield of Embodiment 7. It is a perspective view from the front side of the bonfire windshield of Embodiment 8.

The bonfire windshield of each embodiment based on the present disclosure will be described below with reference to the drawings. When the number, quantity, etc. are referred to in the embodiments described below, the scope of the present invention is not necessarily limited to the number, quantity, etc., unless otherwise specified. The same reference number may be assigned to the same part or equivalent part, and duplicate explanations may not be repeated. It is planned from the beginning to use the configurations in the embodiments in appropriate combinations.

In the following description, unless otherwise specified, "height" means the length along a vertical line extending from the plane when the bottom opening BO described later is a plane, and the plane is a horizontal plane. If so, it means the length along the vertical line.

[Embodiment 1: Windshield for bonfire 1]
The configuration of the bonfire windshield 1 of the present embodiment will be described with reference to FIGS. 1 to 5. 1 is a perspective view from the front side of the bonfire windshield 1, FIG. 2 is a perspective view from the back side of the bonfire windshield 1, FIG. 3 is a plan view of the bonfire windshield 1, and FIGS. 4 and 5 are. , It is a perspective view of another form from the front side of the bonfire windshield 1.

The bonfire windshield 1 is a bonfire windshield having a polygonal pyramid-shaped cloth structure having an open bottom surface and made of cloth, and in the present embodiment, it has a quadrangular pyramid shape as a whole. The bonfire windshield 1 includes a first side cloth 101, a second side cloth 102, a third side cloth 103, and a fourth side cloth 104, which have a triangular shape, respectively, so as to form a square cone cloth structure. Have been placed.

The bottom surface of the bonfire windshield 1 has a rectangular bottom opening BO composed of a first side surface cloth 101, a second side surface cloth 102, a third side surface cloth 103, and a fourth side surface cloth 104.

In the height direction of the first side surface fabric 101, the first opening region 106 is provided in the region from the middle to the bottom surface. The first opening region 106 is a first slit S1 provided between the first side surface cloth 101 and the second side surface cloth 102, and a second slit provided between the fourth side surface cloth 104 and the first side surface cloth 101. It is configured by opening the front door 105 which is a part of the first side surface cloth 101 separated by S2.

The first slit S1 and the second slit S2 may be provided so as to reach a height of 1/4 to 9/10 with respect to the height (H) of the quadrangular pyramid fabric structure from the bottom opening BO. .. In the present embodiment, the first slit S1 and the second slit S2 are provided up to a height of about ½ of the height (H) of the quadrangular pyramid cloth structure.

At a position different from the position where the first slit S1 and the second slit S2 are provided, the second opening region 107 is located above the middle of the third side cloth 103 arranged to face the first side cloth 101. Is provided.

The first side surface cloth 101, the second side surface cloth 102, the third side surface cloth 103, and the fourth side surface cloth 104 are highly flame-retardant materials. The specific material used for each side fabric will be described later.

The first side surface fabric 101 has a triangular shape reaching the bottom surface, and the region from the middle to the bottom surface is the second side surface fabric 102 and the fourth side surface located on both sides by the first slit S1 and the second slit S2 described above. It constitutes a front door 105 that is not fixed to the cloth 104 and opens and closes the first opening region 106. In the state shown in FIG. 1, the front door 105 is fixed to the first side surface cloth 101 by using the belt member 110 in a state of being rolled upward. In this state, the first opening region 106 is fully open.

The fixing method of the front door 105 is not limited to the fixing by the belt member 110, and it is possible to adopt a known fixing method such as a button, a fastener, and a hook hook. Further, although the front door 105 is fixed by being rolled up, the front door 105 may be turned upside down as it is without being rolled up, and the lower end may be fixed in the vicinity of the top of the bonfire windshield 1.

When using the bonfire windshield 1, the side on which the first side surface cloth 101 provided with the first opening region 106 is located is the front side and faces the user.

Again, referring to FIG. 2, as the appearance form of the windshield 1 for bonfire, the point P1 where the first slit S1 and the bottom of the cloth structure intersect and the point P2 where the second slit S2 and the bottom of the cloth structure intersect. The second virtual straight line L11 formed when the first virtual straight line L10 connecting the midpoint P3 of the line segment connecting the above and the apex T1 of the fabric structure is projected onto the bottom surface, and the opening center of gravity G1 and the apex of the second opening region 107. It is preferable that the angle θ1 formed when the third virtual straight line L20 connecting with T1 is projected onto the bottom surface is between 30 degrees and 180 degrees. The position of the second opening region 107 shown in FIG. 2 is θ = 180 degrees. For example, when θ = 90, the position is such that the second opening region 107 is provided in the second side surface cloth 102.

With reference to FIG. 2, the second opening region 107 is 3/4 to 9 / from a height of 1/3 to 2/3 with respect to the height (H) of the quadrangular pyramid fabric structure from the bottom opening BO. An opening is provided in a region up to a height of 10. In the present embodiment, the second opening region is located between the height (H2) of about 2/3 and the height (H3) of about 9/10 with respect to the height (H) of the quadrangular pyramid fabric structure. 107 is provided.

More preferably, with reference to FIGS. 2 and 3, the second opening region 107 from the bottom opening BO with respect to the first height (H1) of the first slit S1 and the second slit S2 from the bottom opening BO. It is preferable that the second height (H2) to the lower end of the above condition satisfies the condition of [first height (H1) × 0.9 <second height (H2)].

Further, the opening area (OP1) of the second opening region 107 is set to [total side area (TA) × 0.02 <opening area (OP1) with respect to the total side area (TA) of all the side areas of the fabric structure. ) It is preferable to satisfy the condition of <total side area (TA) x 0.3].

As a result, when the bonfire windshield 1 is viewed as a whole, the first opening region 106 is on the lower side and the second opening region 107 is on the upper side. It will form a flow passage.

At the tops of the first side cloth 101, the second side cloth 102, the third side cloth 103, and the fourth side cloth 104, the four side cloths are adjacent to each other at a position (distance D1) at a predetermined distance from the top. Therefore, a small square thrust C1 is configured on the top of the bonfire windshield 1. As a result, the top of the quadruped 1000 (see FIG. 9), which will be described later, can be housed inside the square thrust C1. Further, even when the stand 2000 is hung from the top, the square thrust shape of the bonfire windshield 1 can be stabilized.

An annular member 108 for hanging is provided at the apex of the quadrangular pyramid of the bonfire windshield 1. The annular member 108 is used when installing the bonfire windshield 1, but it is not necessarily limited to the annular member, and various known members can be used. Reinforcing holes 109 reinforced by eyelets or the like are provided at the corners of the lower ends of the second side surface fabric 102, the third side surface fabric 103, and the fourth side surface fabric 104. The reinforcing hole 109 reinforced by the eyelet or the like is also used when installing the bonfire windshield 1, but the reinforcing hole 109 reinforced by the eyelet or the like is not necessarily an essential configuration, and various known members. Can be used.

The vertical height H from the bottom opening BO of the bonfire windshield 1 shown in FIG. 1 is about 100 cm to about 150 cm, preferably about 120 cm. The length W of one side of the bottom opening BO of the bonfire windshield 1 shown in FIG. 3 is 50 cm to 70 cm, preferably about 60 cm.

As shown in FIG. 4, if necessary, the front door 105 may be not only rolled and fixed at the highest position (L1 in the figure), but may also be fixed in the intermediate region (L2 in the figure). .. The vertical height of L1 is about 60 cm, and that of L2 is about 30 cm. As shown in FIG. 5, the front door 105 can also be used to close the first opening region 106. By fixing the front door 105 to an arbitrary position, the opening area of the first opening region 106 can be adjusted.

(Material of side fabric)
With reference to FIG. 6, the material of the side cloth having a high flame retardancy used for the first side cloth 101, the second side cloth 102, the third side cloth 103, and the fourth side cloth 104 will be described. The material of the side fabric used in this embodiment is polybenzol fiber (PBO fiber) (trade name "Zylon (registered trademark)").

As shown in FIG. 6, Zylon® fiber exhibits extremely high flame retardancy. The combustion test based on JIS L1091 (A-vertical method) also shows a very small carbonization length and remaining dust time.

Polybenzol fiber refers to a fiber made of a polybenzazole polymer, and polybenzazole (hereinafter, also referred to as PBZ) refers to polybenzoxazole (hereinafter, also referred to as PBO) and polybenzothiazole (hereinafter, also referred to as PBT). , Or one or more polymers selected from polybenzimidazole (hereinafter, also referred to as PBI).

In the present disclosure, PBO refers to a polymer containing an oxazole ring bonded to an aromatic group, and the aromatic group does not necessarily have to be a benzene ring, but may be a biphenylene group, a naphthylene group, or the like. Furthermore, PBO is not only a homopolymer of poly (p-phenylene benzobisoxazole), but also a copolymer in which a part of the phenylene group of poly (p-phenylene benzobisoxazole) is replaced with a heterocycle such as a pyridine ring, and aromatics. Polymers consisting of a plurality of units of oxazole rings bonded to a group are widely included. This also applies to PBT and PBI. Also included are mixtures of two or more of PBO, PBT and PBI, two or more block or random copolymers of PBO, PBT and PBI and mixtures, copolymers, block polymers of these polybenzazole polymers. ..

The structural unit contained in the PBZ polymer is preferably selected from a lyotropic liquid crystal polymer that forms a liquid crystal at a specific concentration. The polymer is composed of the monomer units represented by the following structural formulas (a) to (h), and preferably is essentially composed of the monomer units selected from the structural formulas (a) to (d). Is. Further, these monomer units may partially contain a monomer unit having a substituent such as an alkyl group or a halogen group.

Suitable solvents for forming the polymer dope include cresol and non-oxidizing acids capable of dissolving the polymer. Examples of suitable acid solvents include polyphosphoric acid, methanesulfonic acid and high concentrations of sulfuric acid or mixtures thereof. More suitable solvents are polyphosphoric acid and methanesulfonic acid. The most suitable solvent is polyphosphoric acid.

The polymer concentration in the dope is preferably at least about 7% by mass, more preferably at least 10% by mass, and particularly preferably at least 14% by mass. The maximum concentration is limited by practical handling, such as polymer solubility and dope viscosity. Due to these limiting factors, the polymer concentration usually does not exceed 20% by weight.

In the present disclosure, suitable polymers or copolymers and dope are synthesized by known methods. For example, Wolfe et al., US Pat. No. 4,533,693 (1985.8.6), Sibert et al., US Pat. No. 4,772,678 (1988.9.22), Harris, US Pat. No. 4,847,350 (July 11, 1989) or Gregory et al., US Pat. No. 5,089,591 (1992.2.18). In summary, suitable monomers are temperatureed in a non-oxidizing, dehydrating acid solution in a non-oxidizing atmosphere at high speed stirring and high shear conditions at a stepwise or constant heating rate from about 60 ° C to 230 ° C. You can make it react by raising it.

The spun yarn requires a draw zone length of sufficient length to obtain a sufficient draw ratio (SDR), and is rectified at a relatively high temperature (above the dope solidification temperature and below the spinning temperature). It is desirable that the temperature is uniformly cooled by the cooling air. The length (L) of the draw zone needs to be long enough to complete solidification in a non-coagulable gas, and is determined by the single-hole discharge amount (Q). In order to obtain good fiber physical characteristics, the draw zone extraction stress needs to be 1.8 g / dtex or more in terms of polymer (assuming that stress is applied only to the polymer).

The threads stretched in the draw zone are then guided to a medium bath for solvent extraction and thread coagulation. As the extraction (coagulation) medium used in the extraction (coagulation) bath, a liquid having a hydroxyl group in the molecule, that is, water, methanol, ethanol, ethylene glycol and a solution prepared by mixing these with phosphoric acid is preferable and more preferable. Is water or an aqueous solution of phosphoric acid.

The phosphoric acid concentration in the case of an aqueous phosphoric acid solution is preferably 5% by mass or more and 60% by mass or less, more preferably 10% by mass or more and 50% by mass or less, and most preferably 20% by mass or more and 40% by mass or less. Further, the region preferable for the solidification temperature is 5 ° C. or higher and 60 ° C. or lower, more preferably 10 ° C. or higher and 50 ° C. or lower, and most preferably 15 ° C. or higher and 40 ° C. or lower.

After passing through the first extraction (coagulation) bath, it is further neutralized with an aqueous solution of sodium hydroxide or the like, and the phosphoric acid contained in the fibers (threads) is extracted through a washing step such as the second extraction bath. Finally, in the extraction bath, the phosphoric acid contained in the yarn is extracted so as to be 1.0% by mass or less, preferably 0.5% by mass or less.

The liquid used as the extraction medium in the present disclosure is not particularly limited, but water, methanol, ethanol, acetone, ethylene glycol, etc., which are substantially incompatible with polybenzazole, are preferable, and an aqueous phosphoric acid solution or water is preferable. More preferred. The extraction (coagulation) bath may be separated in multiple stages, the concentration of the phosphoric acid aqueous solution may be gradually reduced, and finally washed with water. By these extraction treatments, the phosphorus atom content in the fiber is usually reduced to about 10,000 to 2000 ppm.

Finally, the moisture in the fiber is dried to 2% or less through the drying process. For the drying method, select a general roller drying method or a method of leaving it in the oven. For the purpose of improving the fiber elastic modulus, heat treatment may be performed at 400 ° C. or higher under tension, if necessary.

(Texture characteristics)
Next, with reference to FIG. 7, the texture characteristics of the fabrics used for the first side surface fabric 101, the second side surface fabric 102, the third side surface fabric 103, and the fourth side surface fabric 104 will be described. FIG. 7 is a diagram showing the results of comparing the texture characteristics of the woven fabric used for the bonfire windshield 1 with other woven fabrics.

The "weight (absolute dry mass)" of the fabric used in this embodiment is preferably 100 to 1200 g / m ² , and more preferably 150 to 800 g / m ² . In this embodiment, 320 g / m ² was used.

The "thickness" of the fabric used in this embodiment is preferably 0.1 to 3.5 mm, more preferably 0.2 to 2.5 mm. In this embodiment, 0.5 mm was used. The method for measuring "thickness" is based on JIS L1096.

As the cloth used in this embodiment, a spun yarn woven fabric was used instead of a filament woven fabric. Zylon (registered trademark) woven fabrics include filament woven fabrics and spun yarn woven fabrics, but spun yarn woven fabrics were used because they "soften the texture" and "easily give thickness even with the same texture". As a result, it is possible to suppress ventilation while maintaining the texture.

As shown in FIG. 7, "glass fiber", "silicon coated glass fiber" and "polyester woven fabric (work clothes)" were used as samples to be compared with Zylon (registered trademark) cloth. Here, the "polyester woven fabric (work clothes)" is a blend of 65% PET and 35% cotton.

As comparison parameters, the "average coefficient of friction", "thickness (mm)", "grain (g / m ² )", and "thermal conductivity (W / mk)" of each sample were compared.

The "average coefficient of friction" was measured using the KES-SE friction feeling tester of Kato Tech Co., Ltd. under the following conditions. Cut the sample to a length of 5 cm or more and a width of 5 cm or more, measure the vertical direction and the horizontal direction 5 times each with standard sensitivity, standard friction element (1 mm square piano wire sensor), load 50 gf, and test speed 1 mm / cm. The average value in the horizontal direction was calculated.

"Thermal conductivity (W / mk)" was measured as follows using KES-FB7 and Thermolab II of Katou Tech Co., Ltd. Sample under the measurement conditions of ambient environment 20 ° C. 65% RH, hot plate temperature (BT-Box) 35 ° C., sample table (thermocool) temperature 20 ° C. (ΔT: 15 ° C.), contact load 6 g / cm ² (standard). Was placed on a thermocool, a thermolab hot plate was placed on the sample, and the power consumption of the thermolab hot plate after 10 minutes was measured three times, and the average value was calculated. The thickness of the sample required for calculating the thermal conductivity was measured with a load of 6 g / cm ² (calculated by BT-Box weight).

When used as a windshield for bonfire, the bonfire is concentrated and becomes high heat, and in order to prevent the surface temperature from reaching the thermal decomposition temperature or the ignition point, it is desirable to diffuse the heat quickly, so thermal conductivity. It is preferable that (W / mk) is high and heat transfer is fast.

Glass fiber is "tingling" when touched, so coating is essential to improve the feel. When silicon coating is applied to a heavy glass fiber having a specific gravity of more than 2, the basis weight becomes high and the weight of the cloth becomes heavy. Furthermore, coating rigid glass fiber gives it a firm texture.

As shown in FIG. 7, as a result of comparing the samples, it was confirmed that the Zylon (registered trademark) fabric had a texture equal to or higher than that of clothing, the thinnest thickness, the lightest basis weight, and the fastest heat transfer. did it.

[Flame retardant (LOI value)]
The flame retardancy of each fiber will be described with reference to FIG. The LOI value is the limit oxygen index, and can be measured by the combustibility test method of a polymer material according to the JISK7201-1995 oxygen index method. The larger the LOI value, the better the flame retardancy. JISL1091 method Judgment was made according to the combustion test (B method) of textile products.

As shown in FIG. 8, it can be seen that the PBO fiber has a large LOI value and is excellent in flame retardancy as compared with other fibers.

In the bonfire windshield 1 of the present embodiment, PBO fiber is used as a preferable cloth having high flame retardancy. However, as another cloth, one or more fibers selected from polyphenylene sulfide fibers, PEEK fibers, meta-aramid fibers, para-aramid fibers, PBO fibers, and flame-resistant acrylic fibers composed of organic fibers may be used.

(Usage pattern)
A usage pattern of the bonfire windshield 1 will be described with reference to FIGS. 9 and 10. 9 and 10 are perspective views showing a usage pattern of the bonfire windshield 1. In the usage pattern of the bonfire windshield 1 shown in FIG. 9, a quadruped 1000 is arranged inside the bonfire windshield 1, and the bonfire windshield 1 is covered with the quadruped 1000. The second side cloth 102, the third side cloth 103, and the fourth side cloth 104 are provided by the rope N1 using the reinforcing holes 109 provided at the lower ends of the second side cloth 102, the third side cloth 103, and the fourth side cloth 104. The lower end of is fixed to the quadruped 1000. A bonfire stand 200 is arranged inside the bonfire windshield 1.

The bonfire windshield 1 shown in FIG. 10 is used by suspending the bonfire windshield 1 from the top of the stand 2000 by using an annular member 108 for hanging. A rope N1 is stretched between the reinforcing holes 109 provided at the lower ends of the second side cloth 102, the third side cloth 103, and the fourth side cloth 104 and the peg P1 fixed to the ground. Similarly, a bonfire stand 200 is arranged inside the bonfire windshield 1.

According to the bonfire windshield 1 shown in FIGS. 9 and 10, since each side cloth used for the bonfire windshield 1 is made of a highly flame-retardant material, the bonfire stand 200 is arranged inside the bonfire windshield 1. However, you can enjoy the bonfire without burning the side cloth. The air flow passages provided on the front side and the rear side of the bonfire windshield 1 allow smoke K generated from the bonfire to escape to the outside from the second opening region 107 provided on the upper part of the bonfire windshield 1.

Since the bonfire stand 200 can be surrounded by the bonfire windshield 1, it is highly effective as a windshield. Further, even if sparks and smoke fly from the bonfire stand 200, since it is covered with the bonfire windshield 1, it is possible to suppress the diffusion of sparks and smoke to the outside.

By changing the fixed height of the front door 105 and changing the opening area of the first opening region 106, the amount of inflow air and the appearance of the flame can be adjusted. Further, since the bonfire stand 200 can be arranged inside the bonfire windshield 1 to perform the bonfire, it is possible to comfortably enjoy the fluctuation of the flame due to the bonfire like a fireplace. Further, since the side cloth can be expected to have an effect of reflecting heat, the region on the front side of the bonfire windshield 1 can be directionally warmed.

When using at night, the bonfire can be seen passing through the side cloth, so that the bonfire windshield 1 has the role of a lantern, and it can be expected to give comfort to the user.

By installing a gridiron or the like on the bonfire stand 200, it is possible to cook inside the bonfire windshield 1.

Since the bonfire windshield 1 is made of cloth, it can be folded when not in use and is suitable for light weight and compactness. Furthermore, since it can be washed, it can always be used hygienically.

As described above, according to the bonfire windshield 1 according to the present embodiment, it is possible to enjoy the bonfire comfortably.

[Embodiment 2: Windshield for bonfire 1A]
Next, with reference to FIG. 11, the bonfire windshield 1A of the second embodiment will be described. FIG. 11 is a perspective view from the front side of the bonfire windshield 1A.

The basic configuration of the bonfire windshield 1A of the present embodiment is the same as that of the bonfire windshield 1 of the first embodiment. The difference is that the bonfire windshield 1A is not provided with the front door 105 for opening and closing the first opening region 106, and the first opening region 106 is always open.

Even with the bonfire windshield 1A having this configuration, it is possible to obtain the same action and effect as the bonfire windshield 1 of the first embodiment.

[Embodiment 3: Windshield for bonfire 1B]
Next, with reference to FIG. 12, the bonfire windshield 1B of the third embodiment will be described. FIG. 12 is a rear view of the bonfire windshield 1A.

The basic configuration of the bonfire windshield 1B of the present embodiment is the same as that of the bonfire windshield 1 of the first embodiment. The difference is that the bonfire windshield 1B is provided with a rear door 120 for opening and closing the second opening region 107. After this, the opening area of the second opening region 107 can be adjusted by the rear door 120.

Even with the bonfire windshield 1B having this configuration, it is possible to obtain the same action and effect as the bonfire windshield 1 of the first embodiment.

[Embodiment 4: Windshield for bonfire 1C]
Next, with reference to FIG. 13, the bonfire windshield 1C of the fourth embodiment will be described. FIG. 13 is a perspective view from the back side of the bonfire windshield 1A.

The basic configuration of the bonfire windshield 1C of the present embodiment is the same as that of the bonfire windshield 1 of the first embodiment. The difference is that the bonfire windshield 1C is provided with a highly rigid core material 117 at the upper end portion 103v of the third side surface cloth 103 constituting the second opening region 107. This is because when the upper end portion 103v is composed of only the end portion of the fabric, the end portion may hang downward and the contour of the second opening region 107 may be broken.

By providing the core material 117 with high rigidity on the upper end portion 103v of the third side surface fabric 103, it is possible to prevent the end portion from hanging downward. The core material may be linear, but as shown in FIG. 13, the effect of promoting smoke exhaust can be expected by forming the core material into a curved shape protruding outward.

Even with the bonfire windshield 1C having this configuration, it is possible to obtain the same action and effect as the bonfire windshield 1 of the first embodiment.

[Embodiment 5: Windshield for bonfire 1D]
Next, the bonfire windshield 1D of the fifth embodiment will be described with reference to FIGS. 14 to 16. 14 and 15 are first and second front views of the bonfire windshield 1D, and FIG. 16 is a rear view of the bonfire windshield 1D.

The basic configuration of the bonfire windshield 1D of the present embodiment is the same as that of the bonfire windshield 1 of the first embodiment. The difference is that the bonfire windshield 1 of the first embodiment has a quadrangular pyramid-shaped fabric structure having a polygonal pyramid shape having an open bottom surface and made of cloth, whereas the bonfire windshield 1D of the present embodiment has a difference. , In the form of a hexagonal pyramid.

The bonfire windshield 1D includes a first side cloth 201, a second side cloth 202, a third side cloth 203, a fourth side cloth 204, a fifth side cloth 205, and a sixth side cloth 206, which have a triangular shape, respectively. , Arranged to form a hexagonal cone fabric structure.

The bottom surface of the bonfire windshield 1D is a hexagon composed of a first side cloth 201, a second side cloth 202, a third side cloth 203, a fourth side cloth 204, a fifth side cloth 205, and a sixth side cloth 206. Has a bottom opening BO.

In the height direction of the first side surface fabric 201, the first opening region 215 is provided in the region from the middle to the bottom surface. The first opening region 215 is a first slit S1 provided between the first side surface cloth 201 and the second side surface cloth 202, and a second slit S2 provided between the sixth side surface cloth 206 and the first side surface cloth 201. It is configured by opening the front door 210 which is a part of the first side surface cloth 201 separated by the above.

The first slit S1 and the second slit S2 may be provided so as to reach a height of 1/4 to 9/10 with respect to the height (H) of the hexagonal pyramid fabric structure from the bottom opening BO. .. In the present embodiment, the first slit S1 and the second slit S2 are provided up to a height of about ½ of the height (H) of the quadrangular pyramid cloth structure.

At a position different from the position where the first slit S1 and the second slit S2 are provided, the second opening region 213 is located above the middle of the third side surface cloth 203 arranged to face the first side surface cloth 201. Is provided.

The first side surface cloth 201, the second side surface cloth 202, the third side surface cloth 203, the fourth side surface cloth 204, the fifth side surface cloth 205, and the sixth side surface cloth 206 are highly flame-retardant materials. Since the specific material used for each side cloth is the same as that of the bonfire windshield 1 of the first embodiment, the overlapping description will be omitted.

The first side surface fabric 201 has a triangular shape reaching the bottom surface, and the region from the middle to the bottom surface is the second side surface fabric 202 and the sixth side surface located on both sides by the first slit S1 and the second slit S2 described above. It constitutes a front door 210 that is not fixed to the cloth 206 and opens and closes the first opening region 215. In the state shown in FIG. 15, the front door 210 is in a state of being rolled upward, and although not shown, it may be fixed by a known fixing method member such as a button, a fastener, or a hook hook.

In the figure, the front door 210 is fixed by winding it up, but it is also possible to turn the front door 210 upward as it is without winding it up and fix the lower end near the top of the bonfire windshield 1D.

When using the bonfire windshield 1, the side on which the first side surface cloth 201 provided with the first opening region 215 is located is the front side and faces the user.

The appearance form and the like required for the bonfire windshield 1D are the same as those of the bonfire windshield 1 of the first embodiment, so that the first opening region 215 becomes the first opening region 215 when the bonfire windshield 1D is viewed as a whole. The lower, second opening region 213 is on the upper side, forming a good air flow path from the first opening region 215 to the second opening region 213.

At the tops of the first side cloth 201, the second side cloth 202, the third side cloth 203, the fourth side cloth 204, the fifth side cloth 205, and the sixth side cloth 206, at a position separated from the top by a predetermined distance. Since the six side fabrics are adjacent to each other, a small hexagonal thrust C2 is formed on the top of the bonfire windshield 1D. Thereby, as shown in FIGS. 9 and 10 of the first embodiment, the top of the stand can be housed inside the hexagonal thrust C2. Further, even when suspended from the top of a stand or the like, the hexagonal pyramid shape of the bonfire windshield 1D can be stabilized.

An annular member 211 for hanging is provided at the apex of the hexagonal pyramid of the bonfire windshield 1D. The annular member 211 is used when installing the bonfire windshield 1D, but is not necessarily limited to the annular member, and various known members can be used. Reinforcing holes 209 reinforced by eyelets or the like are provided at the corners of the lower ends of the second side cloth 202, the third side cloth 203, the fourth side cloth 204, the fifth side cloth 205, and the sixth side cloth 206. ing. The reinforcing hole 209 reinforced by the eyelet or the like is also used when installing the bonfire windshield 1, but the reinforcing hole 109 reinforced by the eyelet or the like is not necessarily an essential configuration, and various known members. Can be used.

As described above, even in the bonfire windshield 1D having the above configuration, the same effect can be obtained although the appearance and shape are different from those of the bonfire windshield 1 of the first embodiment.

[Embodiment 6: Windshield for bonfire 1E]
Next, with reference to FIG. 17, the bonfire windshield 1E of the sixth embodiment will be described. FIG. 17 is a perspective view from the front side of the bonfire windshield 1E. The basic configuration of the bonfire windshield 1E of the present embodiment is the same as that of the bonfire windshield 1D of the fifth embodiment.

The difference is that in the bonfire windshield 1E of the present embodiment, the first slit S1 is provided only between the first side surface cloth 201 and the sixth side surface cloth 206. As a result, a part of the first side cloth 201 constitutes the front door 210 on the left side, and a part of the sixth side cloth 206 constitutes the front door 212 on the right side, so that the first opening area 215 is like a Kannon door. It is possible to open and close the door.

As described above, even in the bonfire windshield 1E having the above configuration, the same effect as that of the bonfire windshield 1 of the first embodiment and the bonfire windshield 1E of the above embodiment 5 can be obtained.

[Embodiment 7: Windshield for bonfire 1F]
Next, the bonfire windshield 1F of the seventh embodiment will be described with reference to FIGS. 18 to 20. 18 and 19 are first and second perspective views from the front side of the bonfire windshield 1F, and FIG. 20 is a perspective view from the back side of the bonfire windshield 1F.

The basic configuration of the bonfire windshield 1F of the present embodiment is the same as that of the bonfire windshield 1 of the first embodiment. The difference is that the bonfire windshield 1 of the first embodiment has a quadrangular pyramid-shaped fabric structure having a polygonal pyramid shape having an open bottom surface and made of cloth, whereas the bonfire windshield 1F of the present embodiment has a difference. , Conical form. The bonfire windshield 1F includes a side cloth 301 having a conical shape.

The bottom surface of the bonfire windshield 1F has a circular bottom opening BO composed of the side cloth 301 on the conical side.

A first opening region 315 is provided in the region from the middle to the bottom surface in the height direction of the side fabric 301. The first opening region 315 is configured by opening the front door 303 which is a part of the side cloth 301 separated by the first slit S1 and the second slit S2 provided in the side cloth 301.

The first slit S1 and the second slit S2 may be provided so as to reach a height of 1/4 to 9/10 with respect to the height (H) of the conical fabric structure from the bottom opening BO. In the present embodiment, the first slit S1 and the second slit S2 are provided up to a height of about ½ of the height (H) of the conical fabric structure.

A second opening region 312 is provided at a position different from the position where the first slit S1 and the second slit S2 are provided, at a position facing the front door 303 and above the middle of the side cloth 301.

The side cloth 301 is a highly flame-retardant material. Since the specific material used for each side cloth is the same as that of the bonfire windshield 1 of the first embodiment, the overlapping description will be omitted.

In the state shown in FIG. 19, the front door 303 is in a state of being rolled upward, and although not shown, it may be fixed by a known fixing method member such as a button, a fastener, or a hook hook.

In the figure, the side cloth 301 is fixed by being rolled up, but the front door 210 may be turned upside down as it is without being rolled up, and the lower end may be fixed near the top of the bonfire windshield 1F.

The appearance form and the like required for the bonfire windshield 1F is the same as that of the bonfire windshield 1 of the above embodiment 1, so that the first opening region 315 when the bonfire windshield 1F is viewed as a whole. Is on the lower side and the second opening region 312 is on the upper side, forming a good air flow path from the first opening region 315 to the second opening region 312.

An annular member 311 for hanging is provided at the apex of the bonfire windshield 1F. This annular member 311 is used when installing the bonfire windshield 1F, but as in each of the above embodiments, the annular member is not necessarily limited to the annular member, and various known members are used. Is possible.

As described above, even in the bonfire windshield 1F having the above configuration, the same effect can be obtained although the appearance shape is different from that of the bonfire windshield 1 of the first embodiment.

[Embodiment 8: Windshield for bonfire 1G]
Next, with reference to FIG. 21, the bonfire windshield 1G of the eighth embodiment will be described. FIG. 21 is a perspective view from the front side of the bonfire windshield 1G.

The basic configuration of the bonfire windshield 1G of the present embodiment is the same as that of the bonfire windshield 1G of the eighth embodiment. The difference is that the front door is not provided, and the side cloth 301 is provided with a semi-circular notch 310 constituting the first opening region 315. Other configurations are the same as those of the bonfire windshield 1G of the eighth embodiment.

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope of the claims.

1,1A, 1B, 1C, 1D, 1E, 1F, 1G Windshield for bonfire, 101,201 1st side cloth, 102,202 2nd side cloth, 103,203 3rd side cloth, 103v upper end, 104,204 4th side cloth, 105,210,212,303 front door, 106,215,315 first opening area, 107,213,312 second opening area, 108,211,311 annular member, 109,209 reinforcing holes, 110 Belt member, 117 core material, 120 door, 200 bonfire stand, 205 5th side cloth, 206 6th side cloth, 301 side cloth, 1000 quadruped, 2000 stand, S1 1st slit, S2 2nd slit.

Claims

A bonfire windshield with a conical or polygonal weight-shaped fabric structure with an open bottom and composed of fabric.
The fabric structure is
1 or 2 slits from the bottom opening of the fabric structure to a height of 1/4 to 9/10 of the height of the fabric structure.
An opening from the bottom surface of the fabric structure to a height of 1/3 to 2/3 to a height of 3/4 to 9/10 with respect to the height of the fabric structure at a position different from the slit. With an area,
The cloth structure is a windshield for bonfire, which is a highly flame-retardant material.
The second virtual straight line formed when the first virtual straight line connecting the midpoint of the intersection of the slit and the bottom of the cloth structure and the apex of the cloth structure is projected onto the bottom surface, and the opening of the opening region. The windshield for bonfire according to claim 1, wherein the angle formed by the fourth virtual straight line formed when the third virtual straight line connecting the center of gravity and the apex is projected on the bottom surface is between 30 degrees and 180 degrees.
The second height from the bottom opening to the lower end of the opening region is [first height × 0.9 <second height] with respect to the first height of the slit from the bottom opening. The bonfire windshield according to claim 1 or 2, which satisfies the relationship.
The opening area of the opening region satisfies the relationship of [total side area x 0.02 <opening area <total side area x 0.3] with respect to the total side area of all the side areas of the fabric structure. The windshield for bonfire according to any one of claims 1 to 3.
The bonfire windshield according to any one of claims 1 to 4, wherein the cloth is made of organic fibers.
The windshield for bonfire according to claim 5, wherein the organic fiber is composed of one or more fibers selected from polyphenylene sulfide fiber, PEEK fiber, meta-aramid fiber, para-aramid fiber, polybenzol fiber, and flame resistant acrylic fiber.
The bonfire windshield according to claim 5, wherein the organic fiber is a polybenzoxazole (PBO) fiber.