JP7012500B2 - Food containers and heating equipment - Google Patents

Description

The present disclosure relates to a food container that can be used with a temperature controller for adjusting the temperature of the food inside, and more particularly to a food container that can accommodate a heating device.

Conventionally, there has been known a heating tool capable of heating the food inside the food container before meals by storing the food together with the food inside the food container (for example, Patent Documents 1 to 4). For example, in Patent Document 1, the upper surface of a watertight container containing an exothermic agent and a water bag is covered with an easily tearable film, and the easily tearable film and the water bag of the watertight container are torn and opened with a long opening tool. A heating tool (heating tool) configured as described above is disclosed. More specifically, the easily tearable film and the water bag are torn in order by pulling the opening tool while being placed below the food inside the food container. Then, the water flowing out of the torn water bag and the exothermic agent contained in the water-permeable bag come into contact (reaction) inside the watertight container, and the generated high-temperature steam causes the food inside the food container to come into contact with each other. Be heated.

Further, Patent Documents 2 to 3 disclose a food container provided with a middle plate body for placing such a heating tool, and the middle plate body installed inside the container body (Patent Document 2). It is possible to adjust the temperature of the food stored above the middle plate by installing a temperature control tool such as a heating tool equipped with an opening tool (breaking string) on the container installation body, the saucer of Patent Document 3. It has become. The exothermic tool of Patent Document 3 is of a type used in a state where a water bag is stacked on the upper part of the exothermic agent bag.

On the other hand, Patent Document 4 describes a heating unit that houses a type of heating device that manually breaks the water bag and pours it into a water-permeable heating agent bag during use, and repeatedly attaches and detaches the heating unit to the upper part. Disclosed is a heat-generating food heating container including a food container capable of being used and a lid that detachably closes the opening of the food container. The upper surface of the bottom plate of the container of the heat generating unit is provided with a central bottom portion and an inclined surface descending from the peripheral portion toward the central bottom portion. This ensures that even if the user pours the water from the water bag into a place where the exothermic agent bag of the exothermic unit container is not placed, this water will flow down the slope and enter the exothermic agent contained in the central bottom. It is said that it can be contacted.

Japanese Unexamined Patent Publication No. 2009-24881 Utility model registration No. 3198407 Japanese Unexamined Patent Publication No. 11-292155 Japanese Unexamined Patent Publication No. 2007-275339

For example, the heating tool shown in Patent Document 1 requires a watertight container for each heating device, so that the cost such as material cost is increased accordingly. In addition, since the water bag is torn and opened by being pulled, the upper part of the watertight container is covered with an easily tearable film in a state where the opening tool is extended from the inside to the outside of the watertight container. That is, since the opening tool is covered with the opening tool sandwiched between the watertight container and the lid, the inside of the watertight container may not be sufficiently sealed due to the nature of the opening tool used by pulling it by hand. Therefore, since the reaction between the moisture invading through the gap generated at the place where the opening tool is installed and the exothermic agent gradually progresses, the expiration date of the exothermic tool is relatively short, for example, one month. If the expiration date of the heating tool is limited to a short period of time, it cannot be stored for a long period of time, and it becomes difficult to reduce the cost of the heating device.

In this respect, it is considered possible to prolong the expiration date by separately sealing the water bag and the exothermic agent bag as in Patent Document 3. However, as in Patent Document 3, in the exothermic tool in which the water bag and the exothermic agent bag are arranged one above the other in a state of being in contact with each other, according to Patent Document 1, a small amount of water penetrating the exothermic agent is the exothermic agent. The reaction of the exothermic agent may proceed before using the exothermic tool as the storage period elapses. Further, in Patent Document 4, the water bag and the water-permeable exothermic agent bag are not directly stacked one above the other, but in the first place, the exothermic agent bag is a type of bag that allows water to permeate and reacts with moisture in the atmosphere. Easy to progress. Further, the heat-generating food heating container of Patent Document 4 is premised on the use of a heat-generating tool of a type that does not use an opening tool, and the heat-generating tool without an opening tool is inferior in convenience.

In view of the above circumstances, at least one embodiment of the present invention provides a food container capable of appropriately causing an exothermic reaction by the heating tool while reducing the cost of the heating tool having the opening tool. The purpose.

(1) The food container according to at least one embodiment of the present invention is
A container body having a bottom portion and a side wall portion erected from the peripheral edge of the bottom portion and having an opening at the top, and a container body.
A medium plate body installed inside the container body, which is an inclined surface portion inclined with respect to the horizontal direction constituting the heat generating sheet mounting surface on which the heat generating sheet is placed, and is installed inside the container body. The inner plate body having the deepest part located at the lowermost part in the state of being
A lid for covering the opening of the container body is provided.
The exothermic sheet includes a water bag that is opened by a long opening tool and is impermeable to liquid, and an exothermic agent bag that is opened by the opening tool and is contained in the water bag. An impermeable exothermic agent bag in which the exothermic agent that reacts exothermicly with the liquid to be enclosed is enclosed is formed side by side.
The inner plate body is configured such that the exothermic sheet is placed on the exothermic sheet mounting surface in a state where the exothermic agent bag of the exothermic sheet is located closer to the deepest portion than the water bag. To.

According to the configuration of (1) above, the food container includes a medium plate for accommodating a heat-generating sheet in which an impermeable water bag and a heat-generating agent bag are formed side by side. Further, the heat-generating sheet mounting surface on which the heat-generating sheet is placed in the inner plate body is composed of an inclined surface portion that is inclined with respect to the horizontal direction. As a result, the exothermic sheet is installed in the inner plate so that the exothermic agent bag in the exothermic sheet is located closer to the deepest part of the inner plate than the water bag, so that the water opened by the opening tool is used. The liquid in the bag (usually water) can be directed toward the exothermic agent in the exothermic agent bag also opened by the opening tool, and the part of the inner plate where the liquid such as water and the exothermic agent do not come into contact with each other. Can be prevented and an exothermic reaction between the liquid and the exothermic agent can be appropriately caused.

That is, according to the above configuration, the inner plate body provided in the food container not only serves as a member for installing the exothermic tool, but also is a watertight container that stores the liquid flowing out of the water bag to react with the exothermic agent. Also plays the role of. As a result, it is possible to eliminate the need for a member of a watertight container, which has conventionally been required to be provided for each heating tool, and it is possible to reduce the manufacturing cost of a disposable heating tool. Furthermore, in the exothermic sheet, the liquid and the exothermic agent are separately stored in an impermeable bag, and both bags can be opened by using the opening tool in that state, thereby maintaining the convenience of the exothermic tool. As a result, the protective ability of the exothermic agent against moisture in the air is enhanced, and as a result, the expiration date of the exothermic tool can be extended.

(2) In some embodiments, in the configuration of (1) above,
The inner plate body has a heat-generating sheet engaging portion that engages with the engaged portion of the heat-generating sheet in a state where the heat-generating sheet is placed on the heat-generating sheet mounting surface.
According to the configuration of (2) above, since the inner plate body has the heating sheet engaging portion, the heating agent bag is positioned closer to the deepest part of the middle plate body than the water bag, and the heating sheet is heated. It can be installed on the mounting surface.

(3) In some embodiments, in the configuration of (2) above,
The heat-generating sheet engaging portion is provided on the inclined surface portion so as to project from the heat-generating sheet mounting surface side.
According to the configuration of (3) above, the heat generating sheet engaging portion is a protruding portion provided on the inclined surface portion. Therefore, for example, by forming an engaged portion that can be engaged with the protrusion such as a hole portion at the edge portion of the exothermic sheet on which the water bag or the exothermic agent bag is not formed, the heat generated by the inner plate body is generated. The engaged portion of the exothermic sheet can be easily attached to the seat engaging portion.

(4) In some embodiments, in the configurations (1) to (3) above,
The inclined surface portion is inclined so as to descend in one direction.
According to the configuration of (4) above, the inclined surface portion is configured to guide the liquid flowing out of the opened water bag to the deepest portion by descending (inclining) in at least one direction. As a result, the liquid can be appropriately guided to the exothermic agent located closer to the deepest part. It is possible to prevent a portion where the liquid and the exothermic agent do not come into contact with each other, and to cause an exothermic reaction between the exothermic agent and the liquid more appropriately.

(5) In some embodiments, in the configurations (1) to (3) above,
The inclined surface portion has a portion that descends along one direction and is inclined so as to descend toward the center of the inclined surface portion in a direction orthogonal to the one direction.
According to the configuration of (5) above, the deepest portion in which the liquid flowing out of the opened water bag is formed in a dot shape by having the inclined surface portion having a portion inclined in one direction and two directions orthogonal to the inclined surface portion. It is configured to lead to. This makes it possible to more appropriately guide the liquid flowing out of the water bag to the heating agent located closer to the deepest part.

(6) The heating tool according to at least one embodiment of the present invention is
An impermeable water bag in which a liquid is enclosed and an impermeable exothermic agent bag in which an exothermic agent that reacts with the liquid in the water bag is enclosed are formed side by side in one direction. The exothermic sheet and
It is provided with an opening tool that is connected to the exothermic sheet and is configured to open the water bag and the exothermic agent bag by being pulled along the one direction.

According to the configuration of (6) above, the exothermic tool is such that both the impermeable water bag and the exothermic agent bag, which are formed side by side along one direction of the exothermic sheet, are torn and opened by the opening tool. It is composed. As a result, the expiration date of the heating tool can be extended while maintaining the convenience of the heating tool by the opening tool. Further, since the heating tool does not have a watertight container, it is possible to eliminate the need for a member of the watertight container, which has conventionally been required to be provided for each heating tool, and it is possible to reduce the manufacturing cost of the disposable heating tool.

(7) In some embodiments, in the configuration of (6) above,
The exothermic agent bag includes a first pouch portion and a second pouch portion for accommodating an exothermic agent pack in which the exothermic agent is enclosed in a water-permeable bag, respectively.
It has a pouch connection portion having a pouch connecting passage portion forming a pouch connecting passage that communicates the inside of the first pouch portion and the inside of the second pouch portion.
In a plan view, the pouch passage extends so as to intersect the opening tool along the crossing direction intersecting the one direction.

According to the configuration of (7) above, the pouch communication passage extends along the crossing direction intersecting the pulling direction of the opening tool, so that water permeates on both sides of the opening tool extending along the pulling direction. A sex exothermic agent pack is installed. The exothermic passage is the part where the exothermic agent is not installed, and the opening tool tears the exothermic passage part so as to divide the exothermic passage, so that the exothermic agent is not cut by the opening tool. The bag can be opened.

According to at least one embodiment of the present invention, there is provided a food container capable of appropriately causing an exothermic reaction by the heating tool while reducing the cost of the heating tool having the opening tool.

It is a perspective view schematically showing the food container which concerns on one Embodiment of this invention. It is sectional drawing which cut the food container shown in FIG. 1 by the AA line. It is a figure which shows the middle plate body which concerns on one Embodiment of this invention, (a) is a plan view, (b) is a side view, (c) is a front view. It is a figure which shows schematically the heating tool which concerns on one Embodiment of this invention, (a) is a plan view, (b) is a side view, (c) is a sectional view cut by a BB line.

Hereinafter, some embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention to this, but are merely explanatory examples. do not have.
For example, expressions that represent relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial" are exact. Not only does it represent such an arrangement, but it also represents a tolerance or a state of relative displacement at an angle or distance to the extent that the same function can be obtained.
For example, expressions such as "same", "equal", and "homogeneous" that indicate that things are in the same state not only represent exactly the same state, but also have tolerances or differences to the extent that the same function can be obtained. It shall also represent the existing state.
For example, the expression representing a shape such as a quadrangular shape or a cylindrical shape not only represents a shape such as a quadrangular shape or a cylindrical shape in a geometrically strict sense, but also an uneven portion or a chamfering within a range where the same effect can be obtained. It shall also represent the shape including the part and the like.
On the other hand, the expressions "equipped", "equipped", "equipped", "included", or "have" one component are not exclusive expressions excluding the existence of other components.

FIG. 1 is a perspective view schematically showing a food container 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the food container 1 shown in FIG. 1 cut along the AA line. 3A and 3B are views showing a middle plate 3 according to an embodiment of the present invention, where FIG. 3A is a plan view, FIG. 3B is a side view, and FIG. 3C is a front view. 4A and 4B are views schematically showing a heating tool 6 according to an embodiment of the present invention, where FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a cross section cut along a line BB. It is a figure.

The food container 1 shown in FIG. 1 is a container in which food or the like can be stored. As shown in FIG. 1, the food container 1 generates heat for the purpose of heating and keeping heat of food by pulling the container body 2 and the opening tool 6p in a predetermined direction (hereinafter, appropriately, pulling direction P). It is provided with a middle plate body 3 and a lid body 5 for installing a heat generating tool 6 (described later) capable of capable of installing the heat generating tool 6. For example, the food container 1 is a non-disposable lunch box, and in such a lunch box, the container body 2 and the lid 5 are generally formed of a high-strength material. In the embodiment shown in FIG. 1, the food container 1 is a lunch box for serving that is ordered, cooked, and delivered. The container cover 4 (described later) and the food are placed in this order, and the lid 5 is arranged above the food.
Hereinafter, each of the above-mentioned components of the food container 1 will be described with reference to FIGS. 1 to 3.

The container main body 2 is a container capable of accommodating the above-mentioned medium plate body 3 and the like together with the food and the serving plate 9 (see FIG. 2) of the food and the like. That is, as shown in FIGS. 1 to 2, the container main body 2 forms a container having an opening at the upper portion by the bottom portion 22 and the side wall portion 23 erected from the peripheral edge of the bottom portion 22. Food and the like can be taken in and out of the inside 21 of the container body 2 through the opening. For example, the container body 2 may have a box-like shape as shown in FIG. 1, or may have various shapes such as a hemispherical shape. It should be noted that the peripheral edge may include not only the end of the bottom portion 22 but also the vicinity of the end which is a portion inside from the end. When the container body 2 has a hemispherical shape, a flat portion of the hemispherical shape or a leg for placing the hemispherical container body 2 on a table or other table ( The vicinity of the portion (high ground) may be the bottom portion 22, and the portion connected to the bottom portion 22 may be the side wall portion 23. Further, the container body 2 may be formed of a resin containing plastic, wood, earthenware, or the like.

The middle plate body 3 is a member installed inside the container body 2 described above, and has a storage portion 3c which is a container portion for installing the heating tool 6 as shown in FIGS. 1 to 3. As shown in FIG. 3, the accommodating portion 3c is inclined with respect to the horizontal direction for forming the heating sheet mounting surface S on which the heating sheet 6s (described later), which is a component of the heating tool 6, is mounted. It has a surface portion 31 and a deepest portion 32 located at the lowermost position when the middle plate body 3 is installed inside the container body 2. That is, in a state where the middle plate body 3 is installed inside the container body 2, the inclined surface portion 31 is inclined so as to descend downward (in the direction of gravity). On the other hand, the deepest portion 32 is located at the point where the inclined surface portion 31 descends. The horizontal direction is perpendicular to the gravity direction, and the inclined surface portion 31 is inclined with respect to the horizontal direction with the container body 2 installed on the horizontal plane (the same applies hereinafter).

In the embodiments shown in FIGS. 1 to 3, as shown in FIG. 3A, the accommodating portion 3c of the inner plate body 3 has an outer shape that is substantially quadrangular in a plan view, but the inclined surface portion. 31 is composed of four planes (31a to 31d) such that each intersects with each other in one place, and the deepest portion 32 is formed by a portion where the four planes are in contact with each other. In other words, the inclined surface portion 31 has a portion that descends along one direction and is inclined so as to descend toward the center of the inclined surface portion 31 in a direction orthogonal to the one direction. In a plan view as shown in FIG. 3A, the virtual line passing through the deepest portion 32 and along the pulling direction P is defined as the first virtual line Lp, and the crossing direction passing through the deepest portion 32 and intersecting the pulling direction P. Assuming that the virtual line along (the orthogonal direction V in FIG. 3) is the second virtual line Lv, the above four planes constituting the inclined surface portion 31 are the first plane 31a on the upper left and the second plane 31b on the upper right of the paper surface. , Corresponds to the lower left third plane 31c and the lower right fourth plane 31d. Then, each of these four planes (31a to 31b) descends toward the second virtual line Lv along the first virtual line Lp and toward the center of the inclined surface portion 31 in the second virtual line Lv. Tilt to descend. As described above, the inclined surface portion 31 has a portion inclined in one direction and two directions orthogonal to the inclined surface portion 31 so as to guide the liquid W flowing out of the opened water bag 61 to the deepest portion 32 formed in a dot shape. It is composed of. As a result, the liquid W flowing out of the water bag 61 can be more appropriately guided to the exothermic agent E located closer to the deepest portion 32.

However, the present invention is not limited to this embodiment. For example, the inclined surface portion 31 described above may be composed of at least one surface. Specifically, in some other embodiments, the inclined surface portion 31 has a plane on one side (for example, the upper side of the paper surface of FIG. 3) and the other side (paper surface of FIG. 3) sandwiching the second virtual line Lv. Two or more planes may be included, such as forming the deepest portion 32 at the connecting portion by two planes with the plane on the lower side of the above. In some other embodiments, the inclined surface portion 31 is formed by inclining one or more planes on one side of the second virtual line Lv, while the other surface is formed or formed vertically. By forming the surface so as to be inclined (pocket-shaped) in the same direction as the plane on one side, a surface on which the heat generating sheet 6s is not placed may be formed. Further, the one-sided surface and the other-sided surface sandwiching the second virtual line Lv may be connected via the deepest flat portion 32.

Further, although the inclined surface portion 31 has been described as a flat surface in any of the above-described embodiments, in some other embodiments, the inclined surface portion 31 may have a curved surface having a predetermined curvature. For example, in FIG. 3, the four planes (31a to 31d) of the accommodating portion 3c separated by the first virtual line Lp and the second virtual line Lv may be formed by curved surfaces having the same or different curvatures, respectively. Alternatively, at least a part of the inclined surface portion 31 may be a curved surface such that one side of the second virtual line Lv (for example, above the paper surface in FIG. 3) is a curved surface and the other surface is a flat surface.

Further, in the embodiment shown in FIGS. 1 to 3, in the middle plate body 3, the deepest portion 32 of the accommodating portion 3c is separated from the bottom portion 22 of the container main body 2 by a distance L (separated state). The interior 21 has an installation unit 34 configured to install the accommodating unit 3c. More specifically, the installation portion 34 is connected to the periphery (periphery) of the upper end portion of the container-shaped accommodating portion 3c. Then, the installation portion 34 is locked to the locking portion 24 of the side wall portion 23 of the container main body 2, so that the above-mentioned separated state is formed. In the embodiment shown in FIGS. 1 to 3, the locking portion is a stepped portion formed by changing the wall thickness of the side wall portion 23, but it is sufficient if the installation portion 34 can be locked, and the locking portion is a protrusion. It may be formed by other configurations such as a shape or a gradual increase in the wall thickness of the side wall portion 23 downward. However, the present invention is not limited to this embodiment. In some other embodiments, the accommodating portion 3c and the bottom 22 of the container body 2 may not be separated from each other, or a heat insulating material may be interposed between them, or the bottom 22 of the container body 2 may be a heat insulating material. It may be formed of. The accommodating portion 3c may be made of metal, a resin containing plastic, wood, or earthenware, or the accommodating portion 3c and other portions (installation portion 34) may be made of different materials.

Further, in the present embodiment, the food container 1 covers the upper portion (opening) of the accommodating portion 3c of the inner plate body 3 and forms a predetermined space upward together with the side wall portion 23 of the container main body 2. The above-mentioned predetermined space provided with the above is a space for accommodating food or a serving plate 9 (broken line) of food, and the upper portion of the accommodating portion cover 4 (the side not facing the accommodating portion 3c) is set as the lower surface. The side wall portion 23 surrounding the lower surface thereof is used as a side surface, and is formed above the accommodating portion cover body 4. In the embodiment shown in FIG. 1, the accommodating portion cover body 4 is formed by connecting a plurality of rectangular parallelepiped constituent members 41 to each other with a fastening member 42 in a state of being arranged with a gap G. .. In other words, the accommodating portion cover body 4 is a blind formed by using bamboo as the constituent member 41 and thread as the fastening member 42, and partially covers the accommodating portion 3c. The shape of the constituent member 41 is not limited to a rectangular parallelepiped shape, and the cross section may be circular or elliptical. Further, the accommodating portion cover body 4 may be a tray-shaped member in which a plurality of serving plates are integrated, and such a member also covers the opening of the accommodating portion 3c and of each serving plate. A space will be provided above the wall surface.

The lid 5 is for covering the upper portion (opening) of the container body 2. Then, the upper part of the container body 2 can be closed with the middle plate body 3 and the accommodating portion cover body 4 installed on the container body 2. In the embodiment shown in FIGS. 1 to 3, the lid 5 has a shape like a container having a larger outer circumference than the container body 2 and shallower than the container body 2, and is shaped like a container from above the container body 2. The lid 5 is configured to be installed so as to cover it. However, the present invention is not limited to this, and if the upper part of the container main body 2 can be covered, the shape may be such that the container main body 2 is slid (pulled out) from the side and installed. The lid 5 may be made of a resin containing plastic, wood, earthenware, or the like.

Here, the exothermic tool 6 installed on the middle plate 3 described above will be described. As shown in FIG. 4, the exothermic tool 6 is placed on a horizontal surface and is normally filled with a liquid W such as water. The impermeable water bag 61 and the impermeable exothermic agent bag 63 in which the exothermic agent E that reacts with the liquid W enclosed in the water bag 61 is enclosed are in one direction (tensile direction P). It is configured to open the water bag 61 and the exothermic agent bag 63 by being connected to the exothermic sheet 6s and the exothermic sheet 6s formed side by side along the line and being pulled along one direction (tensile direction P). It is provided with an opening tool 6p. More specifically, as shown in FIG. 4A, the exothermic sheet 6s has a part of each of the water bag 61 and the exothermic agent bag 63 (one side of the bag having a rectangular shape in a plan view in FIG. 4). It is formed by being connected via a sheet-shaped connecting sheet portion 62 and being arranged side by side along the pulling direction P of the opening tool 6p in the order of the water bag 61, the connecting sheet portion 62, and the exothermic agent bag 63. ing.

Further, sheet-shaped end sheet portions 65 (65w, 65e) are formed at the ends of the water bag 61 and the exothermic agent bag 63 located on the opposite sides of the connecting sheet portion 62, respectively. The long opening tool 6p (string-shaped member in FIG. 4) is wound with the water bag 61 and the exothermic agent bag 63 formed side by side at least once. Specifically, in the embodiment shown in FIG. 4, one end of the opening tool 6p is near the center of the second end sheet portion 65e on the exothermic agent bag 63 side (near the center in the orthogonal direction V orthogonal to the tensile direction P). ), After being extended along the tensile direction P to the end of the second end sheet portion 65e on the exothermic agent bag 63 side, turned to the back side of the exothermic sheet 6s, and then on the water bag 61 side. The first end portion of the sheet portion 65w is extended along the opposite direction of the tensile direction P, and after being turned to the front side again, the second end portion on the exothermic agent bag 63 side is extended along the tensile direction P. It is installed in a state where the other end extends beyond the seat portion 65e. In the embodiment shown in FIGS. 1 to 3, the other end of the opening tool 6p is inclined in the upper direction (upper surface) of the installation portion 34 of the inner plate body 3 or in the horizontal direction formed on the inclined surface portion 31. The container is formed through a hole (through port) penetrating the surface portion 31 and a slit 28 cut out from the upper end portion formed in the side wall portion 23 (side wall portion 23a in FIG. 1) of the container body 2 toward the bottom portion 22. It is designed to be pulled out to the outside of the main body 2.

Then, when the opening tool 6p wound around the exothermic sheet 6s is pulled in the tensile direction P, the opening tool 6p causes the first end sheet portion 65w, the water bag 61, and the connecting sheet portion 62 on the water bag 61 side. The exothermic agent bag 63 is torn in this order. Then, when the water bag 61 is torn, the liquid contained in the water bag 61 will flow out to the outside. On the other hand, when the exothermic agent bag 63 is torn, the exothermic agent E contained in the exothermic agent bag 63 can come into contact with, for example, the liquid W flowing out of the water bag 61 or the moisture in the atmosphere. Then, the exothermic reaction occurs when the exothermic agent E and the liquid W come into contact with each other, and high-temperature steam or the like that heats the food is generated.

The bag portion (62, 63) of the exothermic sheet 6s has an internal space for accommodating the contained material, but the sheet-shaped portion has no internal space and is a portion that does not allow moisture or the like to permeate, for example. When the water bag 61 and the exothermic agent bag 63 are formed of two or two resin sheets folded in two, the portion where the two sheets are crimped between the two bags. be. Further, the water bag 61 of the heat generating sheet 6s may contain the liquid W together with the second bag, or the second water bag (not shown) containing the liquid is sealed inside as it is. You may have. The exothermic agent bag 63 of the exothermic sheet 6s may contain the exothermic agent E housed in the water-permeable bag inside, or may enclose the exothermic agent E as it is.

Then, in the food container 1 having the above-described configuration, in the middle plate body 3, the exothermic sheet 6s generates heat in a state where the exothermic agent bag 63 of the above-mentioned exothermic sheet 6s is located closer to the deepest portion 32 than the water bag 61. It is configured to be mounted on the sheet mounting surface S. That is, for example, the distance from the deepest portion 32 to the nearest end of the exothermic agent bag 63 is shorter than the distance from the deepest portion 32 to the nearest end of the water bag 61, or the distance from the deepest portion 32 to water. This means that the distance from the deepest portion 32 to the center of gravity of the exothermic agent bag 63 is shorter than the distance to the center of gravity of the bag 61. Then, in this state, the exothermic sheet 6s is installed in a state where the exothermic agent bag 63 is located below the water bag 61. Therefore, when the water bag 61 and the exothermic agent bag 63 are torn by pulling the opening tool 6p provided in the exothermic tool 6, the liquid W such as water flows out from the water bag 61 arranged relatively upward, and the deepest portion 32 It flows toward the exothermic agent E (exothermic agent bag 63) which is arranged relatively downward by being located close to. As a result, the liquid W and the exothermic agent E come into contact with each other in the accommodating portion 3c of the inner plate body 3 to carry out an exothermic reaction, and the food located above the inner plate body 3 is heated.

In the embodiment shown in FIGS. 1 to 3, the exothermic sheet 6s is a middle plate so that the exothermic agent bag 63 is located on the second virtual line Lv (described later) as shown in FIG. 3A in a plan view. It is installed on the body 3. More specifically, the exothermic sheet 6s may be installed so that the vicinity of the center in the tensile direction P of the exothermic agent bag 63 is located on the second virtual line Lv. The liquid W of the water bag 61 torn by the opening tool 6p accumulates from the deepest portion 32, and the water level becomes higher than that of the torn exothermic agent bag 63, so that the liquid W becomes the exothermic agent E inside the exothermic agent bag 63. Contact. In this way, by configuring the liquid flowing out of the water bag 61 to collect in the deepest portion 32 formed in a dot shape, it is possible to prevent uneven contact between the exothermic agent E and the liquid.

According to the above configuration, the food container 1 includes a middle plate 3 for accommodating the exothermic sheet 6s in which the impermeable water bag 61 and the exothermic agent bag 63 are formed side by side. Further, the heat-generating sheet mounting surface S on which the heat-generating sheet 6s in the middle plate 3 is placed is composed of an inclined surface portion 31 that is inclined with respect to the horizontal direction. As a result, the exothermic sheet 6s is installed in the exothermic plate 3 so that the exothermic agent bag 63 in the exothermic sheet 6s is located closer to the deepest portion 32 of the exothermic plate 3 than the water bag 61. The liquid W such as water in the water bag 61 opened by the opening tool 6p can be directed toward the exothermic agent E in the exothermic agent bag 63 also opened by the opening tool 6p, and water in the middle plate 3 can be directed. It is possible to prevent a portion where the liquid and the exothermic agent do not come into contact with each other, and appropriately cause an exothermic reaction between the liquid W and the exothermic agent E.

That is, according to the above configuration, the inner plate 3 provided in the food container 1 not only serves as a member for installing the exothermic tool 6, but also reacts the liquid W flowing out of the water bag 61 with the exothermic agent E. It also plays the role of a watertight container for storing food. As a result, it is possible to eliminate the need for a member of the watertight container, which has conventionally been required to be provided for each heating tool, and it is possible to reduce the manufacturing cost of the disposable heating tool 6. Further, in the exothermic sheet 6s, the liquid W and the exothermic agent E are separately housed in an impermeable bag, and in that state, both bags can be opened by using the opening tool 6p, so that the exothermic tool 6 can be opened. As a result of enhancing the ability of the exothermic agent E to protect against moisture in the atmosphere while maintaining convenience, the expiration date of the exothermic tool can be extended.

Next, regarding the configuration for appropriately installing the exothermic sheet 6s on the middle plate 3 in a state where the exothermic agent bag 63 of the exothermic sheet 6s is located closer to the deepest portion 32 than the water bag 61 as described above. ,explain.
In some embodiments, as shown in FIG. 3, the middle plate 3 is a heat-generating sheet in a state where the heat-generating sheet 6s is placed on the heat-generating sheet mounting surface S (hereinafter, appropriately, a heat-generating sheet is installed). It has a heat generating sheet engaging portion 8 that engages with the engaged portion 66 of the 6s. Then, by engaging the exothermic sheet 6s with the exothermic sheet engaging portion 8 of the middle plate body 3, the exothermic sheet 6s automatically positions the exothermic agent bag 63 closer to the deepest portion 32 than the water bag 61. In this state, it is positioned (fixed) to the middle plate body 3 (accommodation portion 3c). Therefore, in the state where the heat generating sheet is installed, the heat generating sheet engaging portion 8, the first end sheet portion 65w, and the water bag 61 are placed on the inclined surface portion 31 from the upper side to the lower side of the inclination (hereinafter, appropriately, in the inclined direction). Line up. Further, the exothermic agent bags 63 may be lined up. At this time, in the exothermic tool 6, the opening tool 6p is installed on the exothermic sheet 6s so as to open the water bag 61 before the exothermic agent bag 63. As described above, since the first end sheet portion 65w on the water bag 61 side to be torn first is fixed to the heating sheet engaging portion 8, the heating sheet 6s can be opened more easily by the opening tool 6p. I am doing it.

According to the above configuration, since the middle plate body 3 has the heat generation sheet engaging portion 8, the heat generation sheet 63 is located closer to the deepest portion 32 of the middle plate body 3 than the water bag 61. 6s can be installed on the heating sheet mounting surface S.

More specifically, as shown in FIG. 3, the heat generating sheet engaging portion 8 is provided on the inclined surface portion 31 so as to project from the heating sheet mounting surface S side, and is provided on the water bag 61 side of the heating sheet 6s. It is adapted to engage with the first end seat portion 65w. That is, the heat generating sheet engaging portion 8 is a protrusion 81 provided on the inclined surface portion 31. In the embodiment shown in FIG. 3, the heat generating sheet engaging portion 8 is a rod-shaped protrusion 81, and is inserted into a hole (engaged portion 66) formed in the first end sheet portion 65w on the water bag 61 side. By doing so, both are engaged. Further, as shown in FIG. 3B, the protrusion 81 is projected to a height below the upper surface of the installation portion 34 so as not to interfere with the accommodating portion cover body 4 or the like.

Further, in the embodiment shown in FIG. 3, the exothermic sheet engaging portion 8 is formed so as to be lined up along the tensile direction P at two locations of the accommodating portion 3c sandwiching the deepest portion 32 (second virtual line Lv). The exothermic sheet 6s is adapted to engage with the first end sheet portion 65w on the water bag 61 side and the second end sheet portion 65e on the exothermic agent bag 63 side, respectively. Further, each of the heat generating sheet engaging portions 8 provided at the two locations is composed of two protrusions 81 (a pair of protrusions 81) adjacent to each other along the orthogonal direction V. More specifically, the two adjacent protrusions 81 are formed at two locations sandwiching the center (first virtual line Lp) of the orthogonal direction V in the accommodating portion 3c. The opening tool 6p is configured to be located between the two protrusions 81, and guides the opening tool 6p.

However, the present invention is not limited to this embodiment. In the embodiment shown in FIG. 3, the heat generating sheet engaging portion 8 (projection portion 81) projects upward in one direction, but in some other embodiments, the heating sheet engaging portion 8 is formed from the inclined surface portion 31. It may be formed in a hook shape, such as protruding upward and then extending in the direction opposite to the inclination direction. Further, although the heat generating sheet engaging portion 8 is projected in the direction opposite to the direction of gravity, it may be projected upward along the opposite side in the inclined direction or the like. Further, it is sufficient that the heat-generating sheet engaging portion 8 of the middle plate body 3 can be engaged with the engaged portion 66 of the heat-generating sheet 6s. For example, in some other embodiments, the heat-generating sheet engagement portion of the middle plate body 3 is engaged. The portion 8 may be a hole portion, and the engaged portion 66 of the heat generating sheet 6s may be configured to engage with each other by projecting. Further, the heat-generating sheet engaging portion 8 and the engaged portion 66 of the inner plate body 3 may be configured to be engaged by a hook-and-loop fastener.

Further, in the embodiment shown in FIG. 3, the heat generating sheet engaging portions 8 formed at the two locations of the accommodating portion 3c sandwiching the deepest portion 32 are each composed of a pair of protrusions, but some other portions are formed. In the embodiment, for example, the protrusion 81 of the heat-generating sheet engaging portion 8 of one of the two locations and the protrusion 81 of the other heat-generating sheet engaging portion 8 have a shape such as a cross-sectional shape, a thickness, and a number. When the number of lines is different, at least one configuration such as spacing and arrangement may be different. Then, by providing the engaged portion 66 of the heat generating sheet 6s according to the configuration of the heat generating sheet engaging portion 8, the heat generating sheet 6s is installed in the intended direction without engaging if the installation direction of the heat generating sheet 6s is not intended. It can be configured to engage only in the case of a heat-generating sheet, and can be oriented so that the heat-generating sheet 6s is installed on the heat-generating sheet mounting surface S in an appropriate direction.

According to the above configuration, the heat generating sheet engaging portion 8 is a protrusion 81 provided on the inclined surface portion 31. Therefore, for example, a protrusion such as a hole is formed on an edge portion (at least one of the first end sheet portion 65w and the second end sheet portion 65e) on which the water bag 61 and the exothermic agent bag 63 are not formed in the exothermic sheet 6s. By forming the engaged portion 66 that can be engaged with the portion 81, the engaged portion 66 of the exothermic sheet 6s can be easily attached to the exothermic sheet engaging portion 8 of the inner plate body 3.

Next, some embodiments relating to the exothermic agent bag 63 of the exothermic sheet 6s will be described with reference to FIG.
In some embodiments, the exothermic agent bag 63 of the exothermic sheet 6s has a plurality of (N) pouch portions (N is 2) in which a plurality of exothermic agent packs 7 containing the exothermic agent E are enclosed in a water permeable bag. It may have the above integer). More specifically, as shown in FIG. 4, the exothermic agent bag 63 of the exothermic sheet 6s has a first pouch portion 63a and a first pouch portion 63a for accommodating the exothermic agent pack 7 in which the exothermic agent E is enclosed in a water-permeable bag. It has a second pouch portion 63b and a pouch connecting portion 64 having a pouch connecting passage portion 64p forming a pouch connecting passage 64c that communicates the inside of the first pouch portion 63a and the inside of the second pouch portion 63b. In the embodiment shown in FIG. 4, the heat generating sheet 6s is configured such that the pouch communication passage 64c is located above (directly above) the deepest portion 32 of the accommodating portion 3c in the heating sheet installed state. In other words, in the state where the heat generating sheet is installed, the pouch communication passage 64c is positioned so as to overlap the deepest portion 32 in a plan view. In the embodiment shown in FIG. 4, in the heating sheet installed state, the heating sheet 6s has a portion that is bent by being placed along the inclined surface portion 31 or the like, and the bent portion. May be configured by at least a part of the pouch communication passage 64c. Further, the pouch connecting passage 64c intersects the opening tool 6p along the crossing direction (orthogonal direction V in FIG. 4) intersecting in one direction (tensile direction P) in a plan view as shown in FIG. 4A. It is extended like this.

In the embodiment shown in FIG. 4, the exothermic agent bag 63 of the exothermic tool 6 has a first pouch portion 63a for enclosing the first exothermic agent pack 7a and a second exothermic agent pack 7b for enclosing the second exothermic agent pack 7b. It has two pouch portions with two pouch portions 63b. The pouch connection portion 64 includes a pouch communication passage portion 64p forming a pouch communication passage 64c that communicates with the inside of the first pouch portion 63a and the inside of the second pouch portion 63b, a part (one side) of the first pouch portion 63a, and the pouch connection portion 64. It has a part (one side) of the second pouch portion 63b, and a sheet-shaped portion 64s connecting the pouch continuous passage portion 64p. More specifically, as shown in FIG. 4A, the first pouch portion 63a and the second pouch portion 63b have a quadrangular shape in a plan view. Further, the sheet-shaped portion 64s forming a part of the pouch connecting portion 64 includes a sheet-shaped portion 64s on the center side (first sheet-shaped portion 64sa) and a sheet-shaped portion 64s on the end side (second sheet-shaped portion 64sb). ) And. The first sheet-shaped portion 64sa is a sheet-shaped portion 64s connected to the first pouch portion 63a, the second pouch portion 63b, the pouch connecting passage portion 64p, and the connecting sheet portion 62, respectively. The second sheet-shaped portion 64sb is a sheet-shaped portion 64s connected to the first pouch portion 63a, the second pouch portion 63b, the pouch continuous passage portion 64p, and the second end portion sheet portion 65e, respectively. ..

Therefore, by pulling the opening tool 6p, the first sheet-shaped portion 64sa of the pouch connecting portion 64 is torn next to the connecting sheet portion 62 of the heat generating sheet 6s. Further, when the pouch communication passage portion 64p is torn after the first sheet-shaped portion 64sa is completely torn by the opening tool 6p, the pouch communication passage 64c and the outside are in a state of communicating with each other. In this state, the liquid W of the water bag 61 flows into the pouch connecting passage 64p of the pouch connecting passage portion 64p, and heat is generated inside the first pouch portion 63a and the inside of the second pouch portion 63b through the pouch connecting passage 64c. Flow toward agent E. At this time, the pouch communication passage 64c is located at the upper part of the deepest portion 32 of the accommodating portion 3c, and the pouch communication passage 64c is located at the deepest position of the accommodating portion 3c, so that the liquid W invades the pouch communication passage 64c. It becomes easier to do.

According to the above configuration, the pouch communication passage 64c extends along the crossing direction intersecting the pulling direction P of the opening tool 6p, thereby sandwiching the opening tool 6p extending along the pulling direction P on both sides. A water-permeable exothermic agent pack 7 is installed in the. The pouch communication passage 64c is a portion where the exothermic agent E is not installed, and the pouch communication passage portion 64p is torn by the opening tool 6p so as to divide the pouch communication passage 64c. The exothermic agent bag 63 can be opened without cutting.

The present invention is not limited to the above-described embodiment, and includes a modification of the above-mentioned embodiment and a combination of these embodiments as appropriate. In the above-described embodiment, the heat generating sheet 6s is installed on the middle plate body 3, but it is also possible to install a temperature control tool such as a cold insulator on the middle plate body 3. According to this configuration, it is not necessary for caterers and the like to have a lunch box (food container 1) according to the type of temperature controller and the season, and the cost required for purchasing, storing, and managing the lunch box is reduced. It is possible to do.

1 Food container 2 Container body 21 Inside 22 Bottom 23 Side wall 24 Locking part 3 Medium plate body 3c Storage part 31 Inclined surface part 31a First plane 31b Second plane 31c Third plane 31d Fourth plane 32 Deepest part 34 Installation part 4 Accommodating part Cover body 41 Component member 42 Fastening member 5 Lid body 6 Heat-generating tool 6p Opening tool 6s Heat-generating sheet 61 Water bag 62 Connecting sheet part 63 Heat-generating agent bag 63a First pouch part 63b Second pouch part 64 Pouch connection part 64p Pouch ream Passage 64c Pouch continuous passage 64s Sheet-like part 64sa First sheet-like part 64sb Second sheet-like part 65 End part Sheet part 65w First end sheet part (water bag side)
65e 2nd end sheet part (exothermic agent bag side)
66 Engaged part (heat generation sheet side)
7 Exothermic agent pack 7a First exothermic agent pack 7b Second exothermic agent pack 8 Exothermic sheet engaging part (middle plate side)
81 Protrusions 9 Plate W Liquid (water)
E Exothermic agent S Exothermic sheet mounting surface P Tensile direction V Orthogonal direction Lp 1st virtual line Lv 2nd virtual line L Separation distance G Gap

Claims (5)

A container body having a bottom portion and a side wall portion erected from the peripheral edge of the bottom portion and having an opening at the top, and a container body.
A medium plate body installed inside the container body, which is an inclined surface portion inclined with respect to the horizontal direction constituting the heat generating sheet mounting surface on which the heat generating sheet is placed, and is installed inside the container body. The inner plate body having the deepest part located at the lowermost part in the state of being
A lid for covering the opening of the container body is provided.
The exothermic sheet includes a water bag that is opened by a long opening tool and is impermeable to liquid, and an exothermic agent bag that is opened by the opening tool and is contained in the water bag. An impermeable exothermic agent bag in which the exothermic agent that reacts exothermicly with the liquid to be enclosed is enclosed is formed side by side.
The inner plate body is configured such that the exothermic sheet is placed on the exothermic sheet mounting surface in a state where the exothermic agent bag of the exothermic sheet is located closer to the deepest portion than the water bag. A food container characterized by being. The inner plate body is characterized by having a heat-generating sheet engaging portion that engages with the engaged portion of the heat-generating sheet in a state where the heat-generating sheet is placed on the heat-generating sheet mounting surface. Item 1. The food container according to Item 1. The food container according to claim 2, wherein the heat-generating sheet engaging portion is provided on the inclined surface portion so as to project from the heat-generating sheet mounting surface side. The food container according to any one of claims 1 to 3, wherein the inclined surface portion is inclined so as to descend in one direction. Claims 1 to 1, wherein the inclined surface portion has a portion that descends along one direction and is inclined so as to descend toward the center of the inclined surface portion in a direction orthogonal to the one direction. The food container according to any one of 3.

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