JP2023042799A - Bonfire material - Google Patents

Abstract

To provide a bonfire material that is easy to handle such as transportation and storage, and enjoys a flame color reaction without requiring knacks or skill.SOLUTION: A bonfire material (combustion wood 1) according to the present invention is characterized by comprising: at least one notch (S1-S8) that is formed longitudinally from an upper surface to a lower surface of the bonfire material with a predetermined depth of a notch; an ignition start opening (ignition start hole 3) that has the predetermined depth in a vertical direction from the upper surface to the lower surface near the center of a cross section of the bonfire material; flame reactant accommodation holes (F1 to F8) that contain flame reactants provided at the predetermined depth from the upper surface to the lower surface at a specified distance radially from the center of the cross section of the bonfire material on an outer peripheral side of the ignition start opening; the flame reactants that are accommodated in the flame reactant accommodation holes; and a lid 7 that closes upper end sides of the flame reactant accommodating holes.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to improvements in bonfire materials (for example, log-shaped firewood) that are burned in, for example, camping and used for lighting, heating, cooking, and viewing.

Conventionally, as this type of bonfire material, for example, there is a log-shaped wood called "Swedish torch", "wood candle" or "woodcutter's candle" as described in Patent Document 1. .
As shown in FIG. 7(A), this log has a predetermined depth from the upper surface to the lower surface of the log, and has several cuts extending radially through the approximate center of the cross section. is put in. The cut is made to leave a predetermined distance from the lower end of the log-shaped lumber so as to prevent the log-shaped lumber from cracking and splitting along the longitudinal direction.

A number of cuts are formed around the longitudinal central axis of the log-shaped wood at predetermined angular intervals, and the intersection of these cuts is near the center of the cross-section of the log-shaped wood. Place an ignition agent or the like at a predetermined depth from the upper end of the intersection.

Then, by igniting the ignition agent, the log-shaped wood itself also begins to burn, and then the burning progresses upward, radially, and further downward, and it takes a relatively long time until the whole burns out. Time, combustion will continue.

Utility Model Registration No. 3213970

By the way, the log-shaped bonfire material called the Swedish torch mentioned above does not need to add firewood at any time (timely) during combustion, unlike general chopped firewood, and it burns stably for a long time. Since it can be continued, it is suitable for lighting (torches), heating, cooking, keeping animals away, and the like.
FIG. 7(B) shows an image diagram showing a fantastically burning Swedish torch.

In recent years, as one of the events at camps and the like, viewing the flame of a Swedish torch is also performed.

On the other hand, for example, in events such as campfires (where firewood is assembled or piled up in a relatively large size and burned), as a production, for example, a flame reactant (granular Or granulated chemical products) are put in and enjoy the change in the color of the flame.

Such a flame reaction agent is, for example, packaged (subdivided) into small bags and sold at physical stores such as home centers and online shops, so that it is relatively easy to obtain.

In the recent camping boom, private camps such as small group camps such as solo camps and family camps are popular, and relatively large-scale events such as campfires cannot be held. For this reason, as an event during such a camp, watching the flame of the Swedish torch mentioned above is also done, but during that time, the change in the color of the flame is changed by adding a flame color reactant. You can also enjoy it.

However, the Swedish torch is log-shaped and is used by setting it upright, and in order to put the flame reactant into the flame of the Swedish torch, the diameter is about 20 to 40 cm, which is relatively large. Due to its small diameter, it is small as a target for throwing, so there is a risk of burns and other dangers, and the actual situation is that it requires skill and skill.

Also, in the case of private camping, there are many items such as tents, bedding, ingredients, and cooking utensils that need to be transported to the campsite or prepared in advance. In addition, there is a concern that the flame reactant will be left at home, or even if it is brought to the campsite, it will be lost somewhere, and the event will not be able to be held.

The present invention has been made in view of such circumstances, and is easy to handle such as transportation and storage, and allows the user to enjoy the flame reaction without the need for skill or skill. To provide a bonfire material capable of preventing an event from becoming impossible.

For this reason, the bonfire material according to the present invention is
A cylindrical or polygonal bonfire material having a substantially circular cross section or a polygonal shape with a triangular or larger cross section, comprising: 1
at least one notch vertically extending from the upper surface to the lower surface of the bonfire material with a predetermined depth of cut;
an ignition start opening having a predetermined depth in the vertical direction from the upper surface to the lower surface near the center of the cross section of the bonfire material;
A flame color that accommodates a flame color reactant provided at a predetermined depth from the top surface to the bottom surface at a location radially away from the center of the cross section of the bonfire material on the outer peripheral side of the ignition start opening and at a predetermined depth. a reactant accommodation hole;
a flame reaction agent accommodated in the flame reaction agent accommodation hole;
a lid for closing the upper end side of the flame reactant accommodating hole in which the flame reactant is accommodated;
It is characterized in that it is configured to include

In the present invention, when a plurality of the cuts are provided in the circumferential direction of the central axis of the cross section of the bonfire material, the flame It can be characterized in that a color reactant receiving hole is provided.

In the present invention, when there are a plurality of the flame reactant containing holes, the distances from the center of the cross section are different.

In the present invention, an ignition lateral opening is provided that extends from the side surface of the bonfire material toward the center of the cross section and ignites the ignition material accommodated in the ignition start opening to ignite it. and

According to the present invention, handling such as transportation and storage is easy, the flame reaction can be enjoyed without the need for tricks and skills, and the event can be prevented from being lost due to the loss of the flame reaction agent. We can provide bonfire materials that can be used.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view (viewed obliquely from above) showing the overall configuration of an example of a bonfire material (combustion wood) according to an embodiment of the present invention; It is a figure (photograph) which shows the upper surface of the same bonfire material. It is a figure (photograph) which shows the front of the material for open fires same as the above. It is a figure (photograph) which shows the lower surface of the same bonfire material. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; It is a figure (photograph) which shows the mode of combustion after ignition of the same bonfire material. (A) is a perspective view showing one configuration example of a conventional Swedish torch, and (B) is an image diagram (original illustration) showing a combustion state of the Swedish torch.

An embodiment according to the present invention will be described below with reference to the accompanying drawings. It should be noted that the present invention is not limited by the embodiments described below.

As shown in FIGS. 1 to 4, the combustion wood 1 according to the present embodiment has an appearance of a log (substantially columnar) cut from a tree so as to have an upper surface 2 and a lower surface (bottom surface) 6. ing. As an example, the size of the cross section is approximately circular, with a diameter of approximately 200 mm and a height (or length) of approximately 400 mm. However, since it has a width of about several tens of mm, it is assumed that the diameter is in the range of about 100 to 300 mm and the height (length) is in the range of about 200 to 500 mm.
The burning wood 1 corresponds to an example of the bonfire material according to the present invention.

In the wood for combustion (material for bonfire) 1, cuts (slits, cuts) S1 to S8 are provided at predetermined angular positions (approximately 45° in FIGS. 1 and 2) around the longitudinal center axis X. It is
The cuts S1 to S8 function as passages for introducing air into the combustion section, and can be formed by, for example, cutting wood by moving a chain saw, a circular saw, or the like along the longitudinal direction from the upper surface 2. . Therefore, each of the cuts S1 to S8 is a substantially rectangular concave portion around the central axis X in the longitudinal direction (radially). Since the number of cuts affects how air is taken into the combustion section, the number of cuts can be changed according to the desired combustion method. When they are provided in the circumferential direction, they do not necessarily have to be provided at regular intervals.

The depth of the cuts S1, S5, S3, and S7 can be, for example, about 100 to 180 mm from the upper surface 2 (about 120 mm in FIGS. 1 and 3). Incidentally, S1 and S5 can be formed simultaneously by a chain saw or the like, and the same is true for S3 and S6.
Also, the depth of the cuts S2, S6, S4, and S8 can be, for example, about 200 to 350 mm from the upper surface 2 (about 300 mm in FIGS. 1 and 3). Incidentally, S2 and S6 can be formed at the same time by a chain saw or the like, and the same is true for S4 and S8.
However, since the depth of the cut affects how air is taken into the combustion section, it can be adjusted according to the desired combustion method. It is also possible to

The width (thickness) Y (see FIGS. 1 and 3) of the cut S1 (same for S2 to S8) can be about 5 to 30 mm, or about 10 to 20 mm. Also, the width Y of the cut substantially corresponds to the thickness of the teeth of a chain saw or a circular saw, so it can be changed as appropriate according to the thickness of the teeth of the chain saw or circular saw to be used. In addition, since the width Y of the cut affects how air is taken into the combustion section, it can be adjusted according to the desired combustion method. It is also possible to

Further, as shown in FIG. 4, an air hole 5A for supplying air to the burning portion of the burning wood 1 and an air hole 5B for suppressing unburned residue in the lower portion of the burning wood 1 are provided for combustion. It is provided on the lower surface (bottom surface) 6 side of the wooden piece 1 . The air holes 5A and 5B functioning as air openings according to the present invention are holes having a diameter of about 15 mm. A plurality of them are provided concentrically around the central axis X.

In FIG. 4, the air hole 5B is provided on a concentric circle centered on the longitudinal central axis X at a distance of about 140 to 160 mm from the longitudinal central axis X. It is provided about every 90 degrees around X.

The depth of the air hole 5A from the lower surface 6 of the wood for combustion 1 is about 280 mm here, that is, the depth that allows communication with the lower end of the ignition start hole 3 described later. However, the depth of the air hole 5A from the lower surface 6 of the wood for combustion 1 may be about 200 mm. The depth of the air hole 5B from the lower surface (bottom surface) 6 of the wood for combustion 1 can be about 100 mm. The air holes 5A and 5B can be provided, for example, by cutting (punching) the lower surface (bottom surface) 6 along a direction substantially parallel to the longitudinal center axis X with a drill or the like.
Here, the air hole 5A can be configured to pass through the ignition start hole 3, and the air hole 5A can be configured to pass through the bottoms of the cuts S2 and S6, S4 and S8.
However, the number, arrangement, and size of the air holes 5B are not particularly limited, and can be appropriately changed according to the combustion condition.
Further, in place of the air holes 5A and 5B, or together with the air holes 5A and 5B, as shown in FIG. It is also possible to adopt a configuration in which a cut extending in the direction is provided.

In addition, as shown in FIGS. 1, 2 and 5, the combustion wood 1 according to the present embodiment is provided with an ignition start hole 3 having the longitudinal central axis X as its central axis. This ignition start hole 3 is an example of an ignition start opening according to the present invention, and can have a diameter of about 20 to 50 mm (here, for example, a diameter of about 30 mm), and a depth of about 120 mm from the upper surface 2. can do. The ignition start hole 3 can be provided, for example, by cutting (punching) the upper surface 2 along the longitudinal central axis X with a drill or the like.
However, since the portion where the ignition start hole 3 is provided is the portion where the cuts S1 to S8 intersect, if the intersecting portion is opened so as to function as an ignition start opening, cutting with a drill or the like (Perforation) may be omitted in some cases.

In this ignition start hole 3, as shown in FIG. Insert (drop) until it reaches the bottom (reach the bottom) and set. Therefore, this ignition start hole 3 can also be used as an ignition material installation hole. That is, in the present embodiment, there is a step at the connecting portion between the ignition start hole 3 and the air hole 5A, and the ignition agent can be held (set) in this step portion.
The ignition agent can be a commercially available solid ignition agent (solid fuel) such as for BBQ which is easily available. For example, there are various types such as a dice shape and a cylindrical shape, so as long as they can be inserted to a predetermined depth and held at that position, the shape and diameter of the ignition start hole 3 are not particularly limited. not something. Further, the ignition agent according to the present embodiment is not limited to being solid, and even if the external shape is deformed to some extent, it can be inserted to a predetermined depth of the ignition start hole 3 and can be held at that position to some extent. If there is, it can be adopted even if it is deformable to some extent.

Further, the burning wood 1 according to the present embodiment is provided with a horizontal ignition hole 4 for igniting the ignition agent set at a predetermined depth of the ignition agent start hole 3 by an ignition means. The horizontal ignition hole 4 corresponding to the horizontal ignition opening according to the present invention has a diameter of about 10 mm to 20 mm, and intersects the longitudinal central axis X at a position about 150 mm from the upper surface 2 of the side surface of the burning wood 1. An opening along a direction (for example, orthogonal direction), for example, below the notch S1 and substantially parallel to the notch S1, communicates with the ignition agent set in the ignition start hole 3 through the air hole 5A. .

Therefore, an ignition means such as an ignition lighter with an elongated nozzle or a gas burner can be inserted into the horizontal ignition hole 4 to ignite the ignition agent and start burning the wood 1 for combustion. It is designed to be able to
However, since it is also possible to ignite from the side of the ignition agent (ignition material), the horizontal hole 4 for ignition is arranged to ignite the ignition agent (ignition material) set in the ignition start hole 3 from the side. The opening position is not particularly limited as long as it is possible to reach and ignite.
In addition, an ignition means such as a nozzle of an ignition lighter or a gas burner is inserted through the gap in the center of the upper surface 2 (see the ignition start hole 3 and the peripheral cuts S1 to S8 in FIGS. 2 and 3) to release the ignition agent. Since it is also possible to directly ignite the upper part to ignite, the horizontal ignition hole 4 can be omitted.

Specifically, when the user inserts the nozzle of an ignition lighter through the horizontal ignition hole 4 and directly ignites the lower part of the ignition agent to ignite it, a stable flame is emitted in about one minute from the center of the upper surface 2 ( It appears from the ignition start hole 3 and the intersection of the cuts S1 to S8).
When the ignition agent burns, the flame spreads from the center side of the combustion wood 1 to the outer peripheral side and the upper surface 2 side, and after a delay, the flame advances toward the lower surface, and after about one and a half hours, the combustion ends. It's becoming

However, the ignition agent according to the present embodiment can be changed to ignition materials such as twigs, cotton, and paper. Further, it is also possible to ignite by directly burning the area around the ignition start hole 3 with a burner or the like without using an ignition agent or an ignition material.

Here, in the present embodiment, a flame color reactant is applied to the flame of the burning wood 1 during burning so that the change in color of the flame can be enjoyed.

The flame color reactant gives the flame a color such as green, crimson, blue, or yellow, and can be used as a mixture of alcohol, stearic acid, and a coloring agent for alcohol lamps.
The coloring agent can be selected from, for example, the following chemicals depending on the desired color to be developed. For example, green is boric acid, yellow is finely shaved soap or sodium, deep red is lithium chloride, red is strontium chloride, orange is anhydrous calcium chloride, and blue is calcium chloride. ”, and purple is known as “potassium iodide”. Note that commercially available flame reaction agents may contain calcium carbonate, magnesium, copper powder, silica (silicon dioxide), and the like.

For example, after stearic acid is mixed with alcohol, the coloring agent is added while being warmed in a hot water bath and completely dissolved, and then cooled to solidify. After that, it can be pulverized into a granular or granular flame reaction agent or the like.
By preparing such a granular or granular flame color reaction agent for each color development and mixing them appropriately, it is possible to appreciate the flame changing into various colors.

As mentioned above, it is possible to make the flame reaction agent by yourself, but relatively inexpensive and stable quality products are commercially available at physical stores and online stores, so you can use them.
For example, there are various trade names such as ``MAGICAL FLAMES'', ``Rainbow Fire'', ``Art Fire'', ``SNS Fire'', ``Mystical Fire'', and ``Enshin''. It is a type of safe chemical suitable for storage and transportation, and there are no special regulations regarding its handling, making it easy to handle. However, it is better to avoid cooking when the color develops.

By the way, as mentioned above, by adding a flame color reactant into the flame of the burning Swedish torch (burning wood 1), you can enjoy the change in the color of the flame. In order to throw in the flame reactant properly, there is a danger of burns, so it requires skill and skill.
For example, when the flame reactant is introduced from the gap in the center of the upper surface 2 (see the ignition start hole 3 and the peripheral cuts S1 to S8 in FIGS. 2 and 3), the flame reactant will not flow below the gap. In such a case, the coloring occurs in the lower part of the central part of the burning wood 1, and the coloring is difficult to appear in the flame coming out from the upper surface 2, so that the appearance is good. There is a high possibility that they will not be able to contribute to

In the case of private camping such as solo camping and family camping, it is troublesome to prepare and carry a flame reactant separately from the burning wood 1, and the flame reactant is lost. , There is also concern that the event that enjoys the change of the color of the flame will not be able to be held.

For this reason, here, a configuration is adopted in which the flame color reaction agent is previously installed on the wood for combustion 1 .
Specifically, for example, as shown in FIGS. 1, 2, and 5, flame reactant housing holes F1 to F8 having a diameter of about 20 mm are formed on concentric circles centered on the central axis X in the longitudinal direction. It is provided to be placed in the
Then, in the present embodiment, the flame reactant accommodating holes F1 to F8 are filled with the flame reactant in advance by being poured into them.

1 and 2, the flame reactant containing holes F1 to F8 are located at intervals of about 45° around the central axis X in the longitudinal direction, and the portions where the combustion wood 1 exists between the cuts S1 to S8 (combustion (substantial part of wood 1).

The centers of the flame reactant containing holes F1 to F8 are concentrically provided at a distance of about 30 to 60 mm from the central axis X in the longitudinal direction. 2 and 5, the centers of the flame reactant containing holes F1, F3, F5, and F7 are set at a distance of about 50 mm from the central axis X in the longitudinal direction, and the flame reactant containing holes F2 and F4 , F6 and F8 are set at a distance of about 30 mm from the central axis X in the longitudinal direction.
The depth of the flame reactant accommodating holes F1 to F8 can be, for example, approximately 50 to 80 mm, and here, the depth from the upper surface 2 is approximately 80 mm. The flame reactant housing holes F1 to F8 can be provided, for example, by cutting (perforating) the upper surface 2 along a direction substantially parallel to the longitudinal central axis X with a drill or the like.
However, the lower ends of the flame reactant housing holes F1 to F8 are slightly obliquely cut (perforated) toward the central axis X in the longitudinal direction, so that the supply state of the flame reactant to the flame is adjusted. is also possible.
Also, for example, from a position about 50 to 150 mm from the upper end (upper surface 2) of the side surface (peripheral surface) of the burning wood 1, it is obliquely about 20 mm in diameter toward the central axis X in the longitudinal direction, and about 50 mm deep from the side surface. It is also possible to open one or more holes in and use them as the holes for containing the flame reactant.

In addition, when the burning wood 1 is placed on its side or transported, the flame reactant filling (accommodated) in the flame reactant accommodating holes F1 to F8 is not discharged to the outside. Lids 7 are fitted over the flame reactant housing holes F1 to F8. The blind lid 7 is preferably made of a material that can be burned together with the burning wood 1, and can be made by cutting out wood or the like. For example, it is also possible to use commercially available wooden dowels for blindfolding. .
In FIGS. 1 and 2, blind lids 7 are inserted (struck in) only into the flame reactant housing holes F1 and F5 for photographing, and are not inserted into the remaining flame reactant housing holes. However, in practice, blind lids 7 can be fitted (attached) to all of the flame reactant housing holes F1 to F8.
The blind lid 7 according to this embodiment corresponds to an example of the lid (or plug) according to the present invention.

By the way, the burning wood 1 according to the present embodiment is an example of the bonfire material according to the present invention, and it is possible to use log-shaped wood cut from wood cut from a forest or the like and dried. However, it is not limited to this, and can be used as long as the main component is a plant-derived combustible material.
For example, so-called “ogalite” and “woody briquettes” can be used, and not limited to these, “sawdust generated when coniferous trees and broadleaf trees are lumbered, wood that has no use or is not commercially available, construction waste materials, and odd materials. It is possible to use plant-derived materials such as wood, rice husks, leaves and roots that have been finely pulverized and solidified.
Specifically, for example, ogalite and wood briquettes are mainly composed of sawdust, wood chips, etc., and are compression-molded into a cylindrical shape with a diameter in the range of about 100 to 200 mm and a height (length) in the range of about 200 to 400 mm. It can be used as a material for the combustion wood 1 according to the present invention. There is an advantage that it is safe for use in camping etc. because it will not be broken.
A plant-derived combustible material such as ogalite and wood briquette corresponds to another example of the bonfire material according to the present invention.

The burning wood 1 in which the flame reactant is filled (accommodated) in the flame reactant storage holes F1 to F8 as described above can be used, for example, in the following manner to change the color of the flame when camping. It can be used for ornamental purposes such as enjoyment.
(1) First, in the first step, the user inserts (drops) an easily available ignition agent (solid fuel) up to 120 mm from the upper surface 2 of the ignition agent installation hole 3 (Fig. 5 reference).
(2) In the subsequent step, the user inserts the nozzle of the ignition lighter through the horizontal ignition hole 4 and directly ignites the lower part of the ignition agent to ignite it (see FIG. 5). Alternatively, an ignition means such as a gas burner is inserted through the gap in the center of the upper surface 2 (see ignition start hole 3 and peripheral cuts S1 to S8 in FIGS. 2 and 3) to ignite directly above the ignition agent. can also be ignited.
(3) A stable flame emerges from the center of the upper surface 2 (near the intersection of the ignition agent setting hole 3 and the cuts S1 and S2) about one minute after ignition.
(4) Combustion started near the ignition agent spreads from the center toward the outer periphery of the combustion wood 1 and toward the upper surface 2 side, and is delayed to the lower surface (bottom) 6 side of the combustion wood 1. will continue to burn.
Photographs of the states (3) and (4) above are shown in FIG.
(5) When the combustion progresses further and reaches the flame reactant housing holes F1 to F8, the flame reactant inside acts on the combustion, the color of the flame changes, and the change is visible to the observer. be able to enjoy it. By varying the positions of the flame reactant storage holes by 30 mm, 50 mm, etc. from the center, the flame reactant supplied from each of the flame reactant storage holes can be supplied to combustion at the same time. Instead, the flame reaction agent is supplied first from the flame reaction agent storage holes F1, F3, F5, and F7, which are located about 30 mm away from the center with a time lag, and is later supplied to the outside by about 50 mm from the center. Since the flame reactant is supplied from the flame reactant storage holes F2, F4, F6, and F8 at the end and burned little by little in order, the flame colors such as blue, green, purple, yellow, orange, and white, for example. change (flame reaction) can be observed continuously for about 40 minutes.
In the case where the flame reactant containing hole is provided obliquely from the side surface of the burning wood 1 toward the longitudinal center axis X so that the tip (lower end) of the hole faces downward, the tip of the flame reactant containing hole (lower end) and the longitudinal center axis X, the flame reaction agent can be supplied with a time difference in the same manner as described above, and the flame reaction can be continuously performed for a relatively long time. can be admired.
(6) Since the burning wood 1 continues to burn for several hours even after enjoying the color change of the flame, it can be used for cooking, heating, lighting (light source), flame appreciation, and the like.
In addition, when cooking (except when coloring), for example, cooking such as baking food can be performed on the upper surface 2 of the burning wood 1, and cooking utensils such as frying pans and pots can be placed. Heat cooking is possible.

As described above, according to the burning wood 1 according to the present embodiment, the flame reactant accommodating hole is provided, and the flame reactant is previously accommodated (filled) in the hole, and the flame reactant is placed in the blank lid. Since the storage hole is closed, the stored (filled) flame reaction agent is not discharged to the outside during transportation, making it easy to handle, and the flame reaction automatically starts after ignition. Since it is possible to enjoy the flame reaction without requiring tricks or skills, and it is possible to prevent the possibility that the event cannot be held due to the loss of the flame reaction agent, it is possible to use the burning wood 1 in camping etc. Reliable, easy and safe to enjoy the flame reaction of the flame.

That is, according to the present embodiment, handling such as transportation and storage is easy, and the flame reaction can be enjoyed without requiring tricks or skill, and the event cannot be held if the flame reaction agent is lost. It is possible to provide a bonfire material that can prevent such things.

The combustion wood 1 according to the present embodiment is not limited to a log shape (cylindrical shape), and may be a polygonal prism such as a triangular prism, a square prism, or other shapes.

Although the air holes 5A and 5B are provided in the present embodiment, they may be omitted or cut (slits) may be provided.

Further, the horizontal ignition hole 4 is for facilitating ignition, and can be omitted when the nozzle of an ignition lighter can be inserted through the slit to ignite.

Further, the cross-sectional shape of the ignition start hole 3, the horizontal ignition hole 4, the air holes 5A and 5B, etc. according to the present embodiment is not limited to a circular shape, and any open shape can be employed.

In addition, in the bonfire material according to the present invention, it is also possible to sell the igniting agent (for example, solid igniting agent) in advance in the ignition start opening. In this case, the holding can be performed by fitting the inner diameter of the ignition start opening and the outer diameter of the ignition agent, or by using a wedge or an adhesive.

The present invention is not limited to the embodiments of the invention described above, and various modifications can be made without departing from the gist of the invention.

1 Combustion wood (corresponding to an example of a bonfire material according to the present invention)
2 Upper surface 3 Ignition start hole (corresponding to an example of an ignition start opening according to the present invention)
4 Ignition side hole (corresponding to an example of the ignition side opening according to the present invention)
5A, 5B air holes (corresponding to an example of air openings according to the present invention)
6 Lower surface (bottom surface)
7 Blind lid (corresponding to an example of the lid according to the present invention)
F1 to F8 flame reactant storage holes

Claims (4)

A cylindrical or polygonal bonfire material having a substantially circular cross section or a polygon with a triangular or larger cross section,
at least one notch vertically extending from the upper surface to the lower surface of the bonfire material with a predetermined depth of cut;
an ignition start opening having a predetermined depth in the vertical direction from the upper surface to the lower surface near the center of the cross section of the bonfire material;
On the outer peripheral side of the ignition start opening, from the upper surface to the lower surface at a predetermined distance in the radial direction from the center of the cross section of the bonfire material, or from the side surface of the bonfire material toward the center of the cross section, a flame reactant receiving hole provided at a predetermined depth and containing a flame reactant;
a flame reaction agent accommodated in the flame reaction agent accommodation hole;
a lid for closing the upper end side of the flame reactant accommodating hole in which the flame reactant is accommodated;
A bonfire material comprising: When a plurality of the cuts are provided in the circumferential direction of the central axis of the cross section of the bonfire material, the flame-color reactant accommodating hole is provided in a substantial portion between adjacent cuts. Item 1. The bonfire material according to Item 1. 3. The method according to claim 1, wherein when a plurality of said flame reactant containing holes are present, the distances from the center of the cross section of the cross section of the bonfire material to said flame reactant containing holes are different. bonfire materials. A horizontal ignition opening extending from the side surface of the bonfire material toward the center of the cross section for igniting the ignition material accommodated in the ignition initiation opening is provided. The bonfire material according to any one of 1 to 3.

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