JP7271140B2 - heating tool - Google Patents

Description

The present invention relates to a heating device used to provide heat to the body.

2. Description of the Related Art Conventionally, a heating device is used to warm a predetermined part of the body to relieve stiffness and pain in the part. As this type of heating tool, many have been proposed that are used while being applied to the neck and shoulders (see Patent Document 1, for example).

The heating tool of Patent Document 1 has a flat, rectangular body filled with a heat medium and formed to be flexible in plan view, and the body is flexed along the neck, shoulders, waist, etc. of a person. The part is kept warm (or cooled) by being assigned to it.

Japanese Patent No. 5119366

However, the heating tool of Patent Document 1 is housed in an elongated bag-like cover made of cloth when in use, and is fixed to a person's neck, shoulder, waist, etc. via the cover. Therefore, since it is necessary to prepare a cover for using the heating tool, it is troublesome to use and the management of the cover is troublesome. In addition, when the heating tool of Patent Document 1 is used on a person's shoulder, the muscle that causes stiffness and pain in the shoulder is the middle trapezius muscle, which spreads over the upper back, among the trapezius muscles. has an inverted triangle shape at the bottom, but the heating tool of Patent Document 1 has a rectangular trunk when viewed from above, so there is a problem that heat cannot be effectively applied to the middle trapezius muscle.

The present invention has been made in order to solve the above problems. To provide a heating tool capable of effectively applying heat to the trapezius muscle.

A heating tool of the present invention comprises a heat-generating material, a heat-generating section containing the heat-generating material, and a pair of belt sections which do not contain the heat-generating material and extend in opposite directions from left and right side edges of the heat-generating section. , wherein the lower edge of the heat generating portion protrudes in a convex shape downward from the lower edges of the pair of belt portions, and the lower edge of the pair of belt portions is the lower edge of the heat generating portion. It is characterized by being smoothly connected with

In the heating implement of the present invention, it is preferable that the lower edges of the pair of belt portions extend in the tangential direction of the lower edge of the heat generating portion at the connecting portion with the heat generating portion.

Moreover, in the heating implement of the present invention, both side edges of the heat generating portion are preferably inclined such that the upper end is located inside the lower end.

Moreover, in the heating implement of the present invention, it is preferable that the upper edges of the pair of belt portions are connected to the upper edges of the heat generating portion so as to form a straight line.

Further, in the heating tool of the present invention, the heat-generating part is provided with a restriction line that restricts the movement of the heat-generating material so as to connect the lower ends of the left and right side edges. and a skirt below the regulation line.

Further, in the heating implement of the present invention, the body portion of the heat generating portion has one or more second restriction lines for restricting movement of the heat generating material so as to partition the body portion into a plurality of regions in the left-right direction. It is preferable to provide a plurality of them.

Further, in the heating implement of the present invention, it is preferable that the pair of belt portions are formed so that the length in the vertical direction becomes smaller toward the distal end at least at the distal end side portion.

Further, in the heating tool of the present invention, it is preferable that the heat-generating material is adzuki beans.

The present invention also provides the use of a heating device having any of the configurations described above for applying heat to the neck, shoulders, or waist of the body, and the use of the heating device having any of the configurations described above to heat the neck, shoulders, or lower back of the body. To provide a method for using a heating tool for giving heat to the shoulders or waist.

According to the heating tool of the present invention, the heating part can be fixed by wrapping or pressing against the back of the neck, shoulders (upper back), back, waist, etc. of a person with a pair of belt parts. Therefore, even without using a cover as in the prior art, heat generated from the heat-generating material contained in the heat-generating portion can provide heat to the above-mentioned part of the body. At this time, by pulling the pair of belt portions to the left and right to fix the heat generating portion to a predetermined portion of the body, the main body portion of the heat generating portion between the pair of belt portions is strongly pressed against the surface of the body and closely attached. Further, the lower edge of the heat generating part is smoothly connected to the lower edge of the pair of belt parts, and when the pair of belt parts are pulled left and right, the lower edge of the heat generating part is well pressed against the body by this pulling force. Therefore, it becomes easier to contact without floating from the surface of the body. Therefore, the hem of the heat-generating portion also adheres to the surface of the body.

In this way, the entire heat-generating part is in close contact with the body, so when the heating tool is applied to the back of the neck, shoulders (upper back), waist, back, etc., it can warm a wide range of areas. It is possible to effectively apply heat to the muscles that are the cause of stiffness and pain in the relevant area. Especially when the heating tool is used against the shoulder (upper back), the lower edge of the heat generating part protrudes downward, causing stiffness and pain in the shoulder. Heat can be effectively applied to the caps muscle to the lower part of the middle trapezius muscle.

1 is a front view of a heating tool of this embodiment; FIG. Fig. 2 is a plan view of the heating tool of the present embodiment; It is a bottom view of the heating tool of this embodiment. FIG. 2 is a front view showing an enlarged AA portion of FIG. 1; FIG. 2 is a BB cross-sectional view showing an enlarged AA portion of FIG. 1; 2 is a cross-sectional view taken along line CC of FIG. 1; FIG. FIG. 4A is a rear view (upper) and a perspective view (lower) of a state in which the heating tool of the present embodiment is used on the shoulder. FIG. 2 is a rear view (upper) and a perspective view (lower) of a state in which the heating tool of the present embodiment is used on the neck. FIG. 2 is a rear view (upper) and a perspective view (lower) of a state in which the heating tool of the present embodiment is used on the waist.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a heating tool according to the present invention will be described below with reference to the drawings. 1 to 6 show a heating tool 1 of this embodiment. The heating tool 1 includes a heat-generating material 2 , a heat-generating portion 3 containing the heat-generating material 2 , and a pair of belt portions 4 not containing the heat-generating material 2 . It protrudes from the side edge. The heating tool 1 is used by wrapping or pressing the heating part 3 around the back of the neck, shoulders (upper back), back, waist, etc. of a person by means of a pair of belt parts 4. By slowly warming the above parts of the body with the heat generated from the heat generating material 2 housed in the part 3, the purpose is to relieve fatigue, relieve stiffness, and impart a relaxing effect.

The exothermic material 2 is not particularly limited as long as it can give heat to the body by generating heat by some means. A composition or a material that generates heat when irradiated with microwaves in a microwave oven (for example, ceramic powder such as ferrite) can be used, but adzuki bean is preferably used. The heat-generating composition as a heat-generating material may be enclosed in a bag and accommodated in the heat-generating part 3, or the heat-generating part may contain a gelling agent heated in a microwave oven as a heat-generating material in a bag. 3 can be accommodated. In this case, only the exothermic material 2 may be disposable and replaced with a new one.

Adzuki beans contain a lot of water, and when heated in a microwave oven, the water evaporates and steam is generated, and the heat of this steam gives heat. The heat produced by the steam of adzuki beans is moist heat, which reaches deeper into the body than dry heat, which makes the heat effect more effective. In addition, even if adzuki beans lose the moisture inside due to evaporation, they absorb the lost moisture from the air, so they can be used repeatedly just by reheating them in the microwave oven after a predetermined period of time, making them economical.

As shown in FIGS. 1 to 6, the heating tool 1 has a symmetrical shape with respect to a vertical center line located at the center in the left-right direction. The heating tool 1 is made into a bag shape by overlapping two sheets and joining the outer peripheries of the two sheets by sewing them, for example. The heating portion 3 and the pair of belt portions 4 are integrally formed by joining the sheets by, for example, sewing them together.

The two sheets described above are not particularly limited as long as they have flexibility, and can be composed of, for example, woven fabric, non-woven fabric, knitted fabric, etc., and known fiber materials can be selected. Natural fibers such as cotton; semi-synthetic fibers such as rayon; synthetic fibers such as polypropylene, polyethylene and polyester; and fibers in which various fibers are mixed can be used. The sheet on the user's side is preferably made of fibers in which polyester and cotton are mixed in terms of effectively transmitting the heat of the exothermic material 2 to the user's skin and in terms of feel, and is raised in terms of feel. is more preferable. Further, the sheet on the side opposite to the user is preferably made of polyester in that it retains the heat of the exothermic material 2 without escaping to the outside.

In addition, the basis weight of the two sheets described above is not particularly limited, but the basis weight of both sheets is preferably 100 g/m ² or more and 400 g/m ² or less, and 240 g/m ² or more and 270 g/m ² . The following are particularly preferred.

The heat generating portion 3 has a linear upper edge 30 and is connected to the upper edges 40 of the pair of belts 4 so as to be aligned. On the other hand, the lower edge 31 of the heat generating portion 3 protrudes in a convex shape downward from the lower edges 41 of the pair of belt portions 4, and the left and right end sides protrude small and the center side protrudes greatly. In addition, the lower edge 31 is formed in a smooth, substantially triangular shape having a rounded top in the center in the left-right direction. In addition, the lower edge 31 is not wavy (no unevenness) and is smoothly curved as a whole, and the left and right end portions connected to the lower edge 41 of the pair of belt portions 4 form an upwardly convex curved shape. At the same time, the central portion forms a downwardly convex curvilinear shape. Note that the lower edge 31 does not necessarily have to be composed only of curved lines, and may be composed of a combination of curved lines and straight lines as long as they are connected smoothly.

As shown in FIG. 7, the lower edge 31 of the heat-generating part 3 effectively relieves the middle trapezius muscle, which is the cause of shoulder stiffness and pain, when the heat-generating part 3 is applied to the user's shoulder (upper back). It is formed in the above-described convex shape so that it can be covered over the entire surface. The middle trapezius muscle is one of the trapezius muscles that spreads across the upper back, extending from the lower part of the cervical spine to the end of the shoulder (acromion). In addition, the middle trapezius muscle spreads from the upper part of the thoracic spine to the edge of the shoulder (acromion) along the protrusion above the scapula (scapular spine), and the lower part thereof has an inverted triangular shape. A lower edge 31 of the heat generating portion 3 is formed in a convex shape to match the shape of the lower part of the middle trapezius muscle.

As shown in FIGS. 1 and 4, both side edges 32A and 32B of the heat-generating portion 3 are formed in a straight line, but they are not perpendicular to the upper edge 30 but rather oblique, and the upper edge is the lower edge. (left side edge 32A on the right side, right side edge 32B on the left side), forming a "V" shape with each other. Although the inclination angle θ of both side edges 32A and 32B is not particularly limited, it is preferably 5° or more and 60° or less, and particularly preferably 5° or more and 30° or less. Note that the side edges 32A and 32B do not necessarily have to be slanted, and may, for example, intersect the upper edge 30 perpendicularly and be parallel to each other.

The width (length in the left-right direction) of the heat generating portion 3 is not particularly limited, but is preferably 20 cm or more and 80 cm or less, and particularly preferably 40 cm or more and 50 cm or less. On the other hand, the vertical width (length in the vertical direction) of the heat generating portion 3 is not particularly limited, but is preferably 5 cm or more and 30 cm or less, and particularly preferably 10 cm or more and 20 cm or less.

Since the shoulder width of a person (meaning the back shoulder width, specifically referring to the length of the body surface between the left and right acromion points) is approximately 30 cm to 40 cm, the width of the exothermic part 3 is set as described above. 7, the exothermic part 3 can cover from the left end to the right end of the user's shoulder (upper back). Therefore, heat can be effectively applied by the heating part 3 to the central trapezius muscle, which is the cause of shoulder stiffness and pain. As shown in FIGS. 8 and 9, even when the exothermic part 3 is applied to the back of the user's neck or waist, it can sufficiently cover the neck and waist from the left end to the right end.

In addition, the length of the human neck (the length from the second cervical vertebra to the seventh cervical vertebra) is about 8 cm to 10 cm, and the length from the 12th rib, which is the position of the waist, to the upper part of the pelvis is about 8 cm to 8 cm. Since it is 12 cm, by setting the vertical width of the heat generating portion 3 to the range described above, as shown in FIGS. Since it can be covered from the upper end to the lower end of the waist, it is effective against the upper trapezius muscle and head plate muscle, which cause stiffness and pain in the neck, and the erector spinae muscle, which causes stiffness and pain in the lower back. Heat can be effectively applied by the heat generating part 3 . In addition, as shown in FIG. 7, the middle trapezius muscle can be sufficiently covered even when the heat generating part 3 is applied to the user's shoulder (upper back).

As shown in FIGS. 1 and 4, the heat generating portion 3 is provided with a restriction line 33 that restricts the movement of the heat generating material 2 in parallel with the upper edge 30 so as to connect the lower ends of the side edges 32A and 32B. there is The restriction line 33 divides the heat generating portion 3 into a body portion 35 above the restriction line 33 and a skirt portion 36 below the restriction line 33 . That is, the bottom portion 36 is arranged below the body portion 35 via the restriction line 33 , and the lower edge 31 of the heat generating portion 3 hits the bottom edge of the bottom portion 36 .

A plurality of restriction lines 34 (hereinafter referred to as "second restriction lines") for restricting the movement of the heat generating material 2 are provided on the main body portion 35 of the heat generating portion 3 at intervals in the left-right direction. The body portion 35 is partitioned into a plurality of regions. In the present embodiment, the main body portion 35 includes a first region 35A located in the center, and second regions 35B and 35C arranged adjacent to the left and right of the first region 35A via the second restriction line 34. The two second restriction lines 34 are provided in parallel to the body portion 35 so as to be positioned equidistant from the longitudinal center line in the left-right direction. A vertical center line is positioned at the center in the horizontal direction of the region 35A.

The regulating line 33 and the second regulating line 34 can be formed, for example, by stitching the above-described two sheets that constitute the heat generating portion 3, but the two sheets are sewn together using another method such as adhesion. You may form the regulation line 33 and the 2nd regulation line 34 by joining. The heat-generating material 2 in the heat-generating part 3 may move depending on the weight of the heat-generating material 2 itself and the shape of the body part to which it is applied during use, and may be concentrated in one part of the heat-generating part 3 . However, by restricting the movement of the heat-generating material 2 by the restricting line 33 and the second restricting line 34 , the heat-generating material 2 is prevented from being biased toward any portion of the heat-generating portion 3 , and the heat-generating material 2 is prevented from moving toward the heat-generating portion 3 . can be evenly distributed within

In addition, since the exothermic portion 3 is provided with the restricting line 33 and the second restricting line 34 , the exothermic portion 3 filled with the exothermic material 2 is easily bent at the restricting line 33 and the second restricting line 34 . Therefore, the heat-generating part 3 is deformed according to the surface shape of the body to fit the body, so that the heat-generating part 3 can be brought into close contact with a predetermined part of the body. For example, as shown in FIG. 8, when the exothermic part 3 is applied to the back of the user's neck, the central first area 35A of the body part 35 is in close contact with the back of the neck, and the left and right second areas are in close contact with each other. Since the 35B and the third region 35C are bent inwardly with respect to the first region 35A and closely attached to the sides of the neck, the heat of the heat generating material 2 can be effectively applied to the neck. Moreover, since the hem part 36 is bent outward with respect to the body part 35 at the position of the lower end of the neck and adheres closely to the base of the neck, the heat of the exothermic material 2 can be effectively applied to the base of the neck as well. .

The regions 35A to 35C and the skirt portion 36 of the body portion 35 are filled with the heat generating material 2 respectively. The filling amount of the heat generating material 2 is not particularly limited. ~35C and skirt 36 are filled. The filling rate of the heat generating material 2 in each region 35A to 35C of the body portion 35 and the skirt portion 36 may be the same or different. The filling rate (filling amount) of the heat generating material 2 in the regions 35A to 35C of the body portion 35 and the skirt portion 36 is, for example, about 68% (about 140 g) in the first region 35A and about 140 g in the second region 35B and the third region 35C. It can be about 85% (about 100g) and skirt 36 can be about 68% (about 100g).

As shown in FIGS. 1 to 4, the pair of belt portions 4 extend from both side edges 32A and 32B of the heat generating portion 3 in opposite directions in the horizontal direction. The pair of belt portions 4 has a belt shape with a width (length in the horizontal direction) larger than the vertical width (length in the vertical direction). An upper edge 40 of the pair of belt portions 4 is formed in a straight line and is connected to the upper edge 30 of the heat generating portion 3 so as to form a straight line. The lower edges 41 of the pair of belt portions 4 are also formed in a straight line, but are not parallel to the upper edges 40 but are oriented obliquely, and the tips (the left edge of the left side edge 32A and the right edge 32B right end) is inclined so that it is located above the base end. As a result, the pair of belt portions 4 are formed in a tapered shape in which the vertical width (the length in the vertical direction) becomes smaller toward the tip. In addition, the pair of belt portions 4 has the above-mentioned tapered shape due to the inclination of the lower edge 41 at least in the portion on the distal end side, and the lower edge 41 is parallel to the upper edge 40 in the portion on the proximal end side. may

The lower edges 41 of the pair of belt portions 4 are smoothly connected to the lower edge 31 of the heat generating portion 3 . In this specification, "smooth" means not having a corner (clearly bent point), and in this embodiment, the straight lower edge 41 and the curved lower edge 31 and are connected without corners. Specifically, the linear lower edge 41 extends in the tangential direction of the curved lower edge 31 at the connecting portion T (lower ends of both side edges 32A and 32B of the heat generating portion 3) with the curved lower edge 31. It is connected to the curved lower edge 31 in such a manner that the direction of the straight lower edge 41 and the tangential direction of the curved lower edge 31 are the same.

In the present embodiment, the lower edge 41 of the belt portion 4 is linear at the connection portion T between the lower edge 41 of the pair of belt portions 4 and the lower edge 31 of the heat generating portion 3 , and the lower edge of the heat generating portion 3 is linear. Although 31 is curved, the lower edge 41 of the belt portion 4 may be curved and the lower edge 31 of the heat generating portion 3 may be linear and smoothly connected at the connection portion T. Both the lower edge 41 of the portion 4 and the lower edge 31 of the heat generating portion 3 may be curved, and the curved lines may be smoothly connected at the connecting portion T so that the tangential directions of the two curves are the same.

The vertical width (the length in the vertical direction) of the pair of belt portions 4 is not particularly limited, but the pair of belt portions 4 serve as handles during use, and from the viewpoint that the user can easily hold it, The vertical width at the distal end is preferably 1 cm or more and 20 cm or less, particularly preferably 4 cm or more and 6 cm or less, and the vertical width at the base end is preferably 1 cm or more and 20 cm or less, and 8 cm or more and 10 cm or less. Especially preferred.

The width (the length in the left-right direction) of the pair of belt portions 4 is not particularly limited, but the heating tool 1 can be wrapped around the waist as shown in FIG. From the viewpoint that the ends of the pair of belt portions 4 can be tied together with a margin when they are wound by hanging, the tip of one belt portion 4 traverses the heat generating portion 3 and the tip of the other belt portion 4 is provided. The length to the end is preferably 50 cm or more and 250 cm or less, and particularly preferably 135 cm or more and 140 cm or less.

According to the heating tool 1 of the present embodiment described above, the heat-generating part 3 is attached to a plurality of parts of the body, such as the shoulders (upper back), the back of the neck, the waist, and the back, using a pair of belts 4. Therefore, by fixing it, it is possible to apply heat to the relevant part.

For example, as shown in FIG. 7, the user pulls the pair of belts 4 to the left and right with both hands while placing the heating part 3 on the shoulder (upper back), and then pulls the pair of belts 4 on the body. By pulling forward from the side of the heat generating part 3, the heat generating part 3 is pressed against the shoulder (upper part of the back) and fixed. Thereby, the muscles of the shoulder (upper back) can be slowly warmed by the heat generated from the heat generating material 2 housed in the heat generating part 3. - 特許庁

As shown in FIGS. 8 and 9, the user pulls the pair of belt portions 4 to the left and right with both hands while the heat generating portion 3 is applied to the back of the neck or the waist, and then pulls the pair of belts. By tying the parts 4 together in front of the body, the exothermic part 3 is wrapped around the neck or waist and fixed. As a result, the heat generated from the heat generating material 2 housed in the heat generating part 3 can slowly warm the muscles of the neck and waist.

Although not shown, the user pulls the pair of belt portions 4 left and right with both hands while placing the heat generating portion 3 diagonally against the back, and then pulls the pair of belt portions 4 in front of the body. By tying them together with , the heating part 3 is wrapped around the back with a crossing and fixed. Thereby, the muscles of the back can be slowly warmed by the heat generated from the heat generating material 2 housed in the heat generating part 3. - 特許庁

As described above, according to the heating device 1 of the present embodiment, the heat-generating part 3 is fixed to a plurality of parts of the body by the pair of belt parts 4 without using a cover unlike the conventional technique, and heat is applied to the parts. can give At this time, since the pair of belt portions 4 are pulled to the left and right to fix the heat generating portion 3 to a predetermined portion of the body, the body portion 35 of the heat generating portion 3 between the pair of belt portions 4 is strongly pressed against the surface of the body. In close contact. Furthermore, the lower edge 31 of the heat generating portion 3 is smoothly connected to the lower edge 41 of the pair of belt portions 4, and when the pair of belt portions 4 are pulled left and right, the lower edge 31 of the heat generating portion 3 is pulled by this pulling force. is well pressed against the body, making it easier to contact without floating from the surface of the body. Therefore, the hem portion 36 of the heat generating portion 3 also adheres to the surface of the body.

As described above, according to the heating tool 1 of the present embodiment, the entire heat generating portion 3 is in good contact with the body. Therefore, when the heating tool 1 is applied to the neck, shoulders, waist, back, etc., it is possible to warm the relevant parts in a wide range and effectively apply heat to the muscles that cause stiffness and pain in the relevant parts. be able to. In particular, as shown in FIG. 7, when the heating tool 1 is applied to the shoulder and used, the lower edge 31 of the heat-generating portion 3 protrudes in a downward convex shape, so that stiffness and pain in the shoulder are relieved. It is possible to effectively apply heat to the lower part of the middle trapezius muscle to the middle trapezius muscle that is the cause.

Further, according to the heating device 1 of the present embodiment, the hem portion 36 of the heat generating portion 3 is separated from the main body portion 35 by the restriction line 33, so that it can be easily bent toward the surface of the body. When the belt part 4 is pulled left and right, the hem part 36 adheres well to the surface of the body. Therefore, heat can be applied more effectively.

Further, according to the heating device 1 of the present embodiment, even if the vertical width (the length in the vertical direction) of the pair of belt portions 4 is smaller than the vertical width of the heat generating portion 3, the entire heat generating portion 3 can be attached to the body. They can be brought into close contact with each other, and even a woman can easily grasp and use the pair of belt parts 4.例文帳に追加Further, by forming at least the front end side portion of the pair of belt portions 4 so that the vertical width becomes smaller toward the front end, the pair of belt portions 4 can be grasped more easily.

Further, according to the heating tool 1 of the present embodiment, the side edges 32A and 32B of the heat generating part 3 are inclined so that the upper end is located inside the lower end. When 1 is wrapped around the neck, the upper ends of both side edges 32A and 32B of the heat generating part 3 are bent inward and come into contact with the surface of the neck without floating. Therefore, the left and right second regions 35B and the third regions 35C of the body portion 35 of the heat generating portion 3 can be brought into close contact with the lateral sides of the neck.

Further, according to the heating tool 1 of the present embodiment, the upper edge 31 of the heat generating portion 3 and the upper edge 40 of the pair of belt portions 4 are connected so as to form a straight line, so as shown in FIG. When the heating tool 1 is wrapped around the neck, the pair of belt parts 4 do not interfere with the face.

Further, according to the heating tool 1 of the present embodiment, since the heat generating portion 3 is provided with the regulating line 33 and the second regulating line 34, it is possible to prevent the heat generating material 2 from becoming biased within the heat generating portion 3. . Further, the main body portion 35 of the heat generating portion 3 is easily bent by the second restriction line 34 and deforms according to the surface shape of the body to fit. Therefore, the body portion 35 of the heat generating portion 3 can be brought into good contact with a predetermined portion of the body such as the neck as shown in FIG. 8, for example.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible without departing from the gist of the present invention.

For example, in the heating tool 1 of the above-described embodiment, the lower edge 31 of the heat-generating portion 3 is formed in a substantially triangular shape, but the lower edge 31 may protrude downward in a convex shape, for example, an angular shape. The portion may be formed in a substantially trapezoidal shape with a roundness.

In addition, in the heating implement 1 of the above embodiment, the body portion 35 of the heat generating portion 3 is provided with the second regulating line 34 so that the body portion 35 is divided into three regions 35A to 35C. The second restriction line 34 does not necessarily have to be provided, and the body portion 35 may be a continuous (series) area like the skirt portion 36 .

Further, in the heating implement 1 of the above-described embodiment, the heat generating portion 3 is provided with the regulating line 33, but the regulating line 33 does not necessarily have to be provided.

In addition, in the heating tool 1 of the above embodiment, the left and right side edges 32A and 32B of the heat generating portion 3 are slanted, but the left and right side edges 32A and 32B intersect the upper edge 30 perpendicularly and are They may be parallel.

In addition, in the heating implement 1 of the above embodiment, the upper edges 40 of the pair of belt portions 4 are connected to the upper edge 30 of the heat generating portion 3 in a straight line, but they do not necessarily have to be connected in a straight line.

In addition, in the heating implement 1 of the above embodiment, at least the tip side portion of the pair of belt portions 4 is formed so that the vertical width becomes smaller toward the tip end, but the pair of belt portions 4 extends from the tip end to the base end. The vertical width of the portion 4 may be constant.

In addition, in the heating device 1 of the above embodiment, the heat generating portion 3 and the pair of belt portions 4 are integrally formed, but they are separately formed, and the pair of belt portions are attached to the side edges 32A and 32B of the heat generating portion 3. One side edge of 4 may be connected to each other, for example by stitching.

REFERENCE SIGNS LIST 1 heating tool 2 exothermic material 3 exothermic part 4 belt part 30 upper edge of exothermic part 31 lower edge of exothermic part 32A left edge of exothermic part 32B right edge of exothermic part 33 regulation line 34 second regulation line 35 body part 35A first Region 35B Second region 35C Third region 36 Bottom portion 40 Upper edge of belt portion 41 Lower edge of belt portion

Claims (8)

exothermic material;
a heat-generating part that houses the heat-generating material;
a pair of belt portions that do not contain the heat-generating material and protrude from left and right side edges of the heat-generating portion,
a lower edge of the heat generating portion protrudes in a convex shape downward from the lower edges of the pair of belt portions;
The lower edge of the heat generating portion has upwardly convex curvilinear shapes at the left and right end portions and downward convex curvilinear shapes at the central portion,
The lower edges of the pair of belt portions are smoothly connected to the end portion of the lower edge of the heat generating portion,
Warmer. 2. The heating implement according to claim 1, wherein the lower edges of said pair of belt portions extend in a tangential direction of said end portions forming a curved line shaped upwardly at the connection portion with said heat generating portion. 3. The heating implement according to claim 1 , wherein each of said side edges of said heat generating portion, from which said belt portion protrudes, is inclined such that an upper end thereof is located inside a lower end thereof. The heating tool according to any one of claims 1 to 3, wherein the upper edges of the pair of belt portions are connected to the upper edge of the heat generating portion so as to form a straight line. The heat generating portion is provided with a restriction line that restricts the movement of the heat generating material so as to connect the lower ends of the left and right side edges from which the belt portion protrudes. 5. The heating tool according to any one of claims 1 to 4, wherein the heating tool is divided into a bottom part below the regulation line. 6. The method according to claim 5 , wherein the body portion of the heat generating portion is provided with one or more second restriction lines for restricting the movement of the heat generating material so as to partition the body portion into a plurality of regions in the left-right direction. Heating device as described. The heating implement according to any one of claims 1 to 6, wherein the pair of belt portions are formed such that at least the tip side portions thereof are formed such that the length in the vertical direction decreases toward the tip. The heating tool according to any one of claims 1 to 7, wherein the heat-generating material is adzuki beans .

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