JP3100210U - Lunch box - Google Patents

Abstract

Provided is a portable lunch box, in particular, a lunch box in which a rice container and a vegetable container are removably housed in an outer case so that the rice container does not affect the vegetable container.
A rice container (1) includes a container having heat insulation and heat insulation, and a lid (8) having an opening portion of the container openable and closable and having heat insulation and heat insulation. The outer case 3 does not have a heat retaining property having an opening at an upper portion, which is composed of a container having no property, and a lid 21 which covers an opening of the container in an openable and closable manner and has no heat retaining property. A lower case body 4 and an upper case body 5 having an opening at a lower portion and having no heat insulating property, and having a lower opening edge of the upper case body detachably connected to an upper opening edge of the lower case body, A horizontally long storage chamber 28 is formed inside the outer case. The storage chamber has a rice container storage chamber 28a in one half and a vegetable container storage chamber 28b in the other half. It is the structure which consists of.
[Selection diagram] Fig. 1

Description

The present invention relates to a portable lunch box, and more particularly to a lunch box in which a rice container and a vegetable container are housed in an outer case so as to be freely taken out.

Conventionally, various lunch boxes have been provided. However, in order to separate and store cooked rice and prepared foods, a rice container and a vegetable container are separately provided, and a combination of both containers has been popular.

For example, a conventionally known lunch box has a rice container and a vegetable container stacked in a multi-stage manner, the upper opening of the lower container is covered with the bottom of the upper container, and the upper opening of the uppermost container is covered with a lid. The stacked containers are integrally combined with each other by covering the lid and detachably engaging a pair of rotatable ear pieces provided on the lid with the engagement pieces of the lowermost container.
JP-A-9-154617

米 Generally, cooked rice and prepared dishes are stored in a rice container and a vegetable container immediately after they are cooked, and thus are in a high temperature state. Usually, prepared foods are easy to cool, but cooked rice is hard to cool and stays warm for a relatively long time.

For this reason, according to the lunch box in which the rice container and the vegetable container are stacked in a multi-stage manner as described above, the rice container is heated even after the prepared foods stored in the vegetable container have cooled down after a predetermined time has elapsed. In this case, the heat is transferred from the vertically stacked rice containers to the vegetable container, thereby creating an environment in which the prepared food is warmed and easily perishable, which may cause food poisoning.

In view of the above problems, the present invention provides a lunch box configured to prevent heat from being transmitted from a rice container to a vegetable container and to make the vegetable container easy to cool.

Therefore, the present invention is configured as a first means in a lunch box in which a rice container and a vegetable container are removably housed in an outer case, wherein the rice container has a heat-insulating and heat-insulating body, The lid is openable and closable at the opening of the body and has a heat-insulating and heat-insulating lid, and the vegetable container has a heat-insulating body and an openable and closable opening at the opening of the body. The outer case is composed of a lower case body having no heat retaining property having an opening at the upper part, and an upper case body having no heat retaining property having an opening at the lower part, In a state where the lower opening edge of the upper case body is detachably connected to the upper opening edge of the lower case body, a horizontally long storage chamber is formed inside the outer case, and the storage chamber is formed on one side half. Forming a rice container storage room and a vegetable container storage room in the other half To the point made Te there.

The second aspect of the present invention is that the body of the rice container has a substantially circular cross section to form a cylindrical wall, and the container of the vegetable container has a substantially D-shaped cross section. By forming an arc wall and a flat wall, the radius of curvature of the cylindrical wall of the rice container and the radius of curvature of the arc wall of the vegetable container are substantially equal, and the outer case is substantially symmetrical at both ends of the storage chamber. It is formed by a curved wall that bulges outward in an arc shape, and the cylindrical wall of the rice container is formed along the curved wall of one of the rice container storage room and the vegetable container storage room. In addition to the storage, the circular arc wall of the vegetable container is stored along the curved wall of one of the other storage chambers.

Further, the present invention is configured as a third means, in which the vegetable container is composed of a lower first vegetable container and an upper second vegetable container which are vertically stacked and stored in a vegetable container storage chamber. Thus, the first vegetable container is located inside the lower case body, and the second vegetable container is located inside the upper case body.

According to the invention of claim 1, in a lunch box in which the rice container 1 and the vegetable container 2 are separately configured, the rice is stored in the rice container 1 having heat insulation and heat insulation, while the rice X is contained. Heat is released by storing the prepared food Y in the non-insulating vegetable container 2, and the rice container 1 and the vegetable container 2 are separately stored in the storage chambers 28 a and 28 b of the outer case 3. In addition, unlike the related art, heat is not transmitted from the rice container to the vegetable container to heat the prepared food, thereby creating an environment in which the food is liable to rot, and has the effect of ensuring the safety from food poisoning.

According to the second aspect of the present invention, the storage chambers 28 of the outer case 3 are formed such that the storage chamber 28a of one half and the storage chamber 28b of the other half are substantially symmetrical. And the cylindrical wall 6a of the rice container 1 and the arc wall 19a of the vegetable container 2 are stored along the curved wall, so that the rice container 1 and the vegetable container 2 are stored. It is possible to selectively store in both the room 28a and the storage room 28b, and there is convenience due to the flexibility of storage arrangement.

Since the vegetable container 2 has a substantially D-shaped cross section, it does not rotate freely in any of the storage chambers 28a and 28b and contributes to prevention of side dish collapse. Moreover, the heat radiation of the prepared food is improved through the arc wall 19a and the curved walls 4b, 5b (or 4a, 5a) which are brought into close proximity to each other. And since the cross section d of the vegetable container 2 is substantially D-shaped, the effect that the capacity of the vegetable container 2 can be secured while the dead space between the rice container 1 and the adjacent rice container 1 is made as small as possible. is there.

Further, according to the present invention, it is possible to divide the vegetable container 2 while maintaining the above-mentioned effects, and it is possible to store a wide variety of side dishes in a separate and independent state. In addition, there is a convenience that the first container 2a and the second container 2b can be easily stored and taken out.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the lunch box is composed of a rice container 1 having heat insulation and heat insulation, a vegetable container 2 having no heat insulation and heat insulation, and an outer case for removably storing both containers 1 and 2. 3, and the outer case 3 includes a lower case body 4 and an upper case body 5.

(Structure of rice container)
The rice container 1 has a bottomed cylindrical container 6 having heat insulation and heat insulation properties, and a lid body 8 also having heat insulation and heat insulation properties and covering the upper opening 7 of the container 6 so as to be openable and closable. It is composed of Therefore, the vessel 6 has a cylindrical wall 6a having a radius of curvature d by making the cross section substantially circular (in the illustrated example, a perfect circle).

As shown in FIG. 2, the vessel 6 constitutes a vacuum heat insulating / insulating container made of stainless steel inner and outer double walls 9 a and 9 b, and a disc-shaped synthetic resin made in a concave portion formed at the bottom of the outer wall 9 b. Seat plate 10 is fixed. On the other hand, the lid 8 has an upper plate portion 13 made of a synthetic resin formed with concave portions 12, 12 with a knob 11 extending in the diameter direction on the upper surface, and a synthetic resin fixed to the lower side of the upper plate portion 13. And a heat insulating material 15 such as styrofoam is filled in the hollow interior of the bowl 14 to form a heat insulating and heat retaining lid.

When the opening 7 of the container 6 is covered with the lid 8, the bowl 14 of the lid 8 constitutes a plug that is inserted into the opening 7, and the inner peripheral wall of the bowl 14 and the inner peripheral ridge are formed. The locking means 16 formed by the circumferential ridge is locked. In this state, the downward bent piece 17 of the upper plate 13 extending to the outer periphery of the bowl part 14 surrounds the opening edge of the body 6, and the seal packing 18 provided inside the bent piece 17 fits the body 6. Close to the edge of the opening.

(Composition of vegetable container)
The vegetable container 2 includes a bottomed container 19 having no heat retention, and a lid 21 similarly having no heat retention and covering the opening 20 at the top of the container 19 so as to be freely opened and closed. I have. The vessel 19 has an arc wall 19a having a radius of curvature d by making the cross section substantially D-shaped, and a flat wall 19b connecting both ends of the arc wall. The radius of curvature d of the arc wall 19a is substantially equal to the radius of curvature d of the cylindrical wall 6a of the rice container 1.

(2) As shown in FIG. 2, the container body 19 is integrally formed of a synthetic resin, has a projection 22 at the bottom, and has a flange 23 extending to the outer periphery near the opening edge. On the other hand, the lid 21 is formed in a downward dish shape having a peripheral wall 24 fitted to the opening edge of the container 19, and has a concave portion 25 on the top surface. In the case of the illustrated example, the concave portion 25 is formed by a groove extending in a similar D shape to the lid 21 having a D shape in plan view.

In the illustrated embodiment, the vegetable container 2 is composed of a lower first vegetable container 2a and an upper second vegetable container 2b that can be vertically stacked. The pair of rape containers 2a and 2b have the same configuration, and therefore, the above-described configurations regarding the container 19 and the lid 21 are denoted by the same reference numerals.

(Outer case configuration)
The lower case body 4 and the upper case body 5 constituting the outer case 3 are each integrally formed of a synthetic resin and do not have heat insulation and heat retention. The lower case body 4 is provided with an opening 26 at the upper part, and the upper case body 5 is provided with an opening 27 at the lower part, and the lower opening edge of the upper case body 5 is fitted to the upper opening edge of the lower case body 4. Thus, a horizontally long storage chamber 28 is formed inside the outer case 3. In the case of the example shown in the figure, fitting step portions 29 enabling fitting from above and below are formed at the mutual opening edges. Although not shown, an elastic band is removably fastened to the outer periphery of the outer case 3 in a state where the lower case body 4 and the upper case body 5 are fitted and combined.

The lower case body 4 and the upper case body forming the horizontally long storage chamber 28 are formed by curved walls 4a, 5a, 4b, and 5b that are both symmetrical at both ends and bulge outward in an arc shape. The curved radii of the curved walls 4a, 5a and the curved walls 4b, 5b are substantially equal to each other, and the inner wall faces the cylindrical wall 6a of the rice container 1 and the arc wall 19a of the vegetable container 2 so as to substantially coincide with each other. It is possible to close.

Therefore, the horizontally long storage room 28 forms a rice container storage room 28a by one half, and a vegetable container storage room 28b by the other half.

(Action)
According to the lunch box having the above configuration, freshly cooked rice X is put into the rice container 1. The rice container 1 holds the cooked rice X in a heat-insulated state since the vessel 6 having the vacuum double-wall structure is covered with the heat-insulating lid 8. On the other hand, the prepared side dish Y after cooking is put in the vegetable container 2. Since the vegetable container 2 is covered with the non-heat-retaining container body 19 by the lid 21 also having no heat-retention property, even if the prepared food Y is at a high temperature during storage, it is quickly radiated and cooled to room temperature. Is done.

飯 When carrying a lunch box, for example, when going out, the rice container 1 is stored in the lower case body 4 in the rice container storage room 28a. As shown in FIG. 2, the concave portion 30 for fitting the seat plate 10 at the bottom of the body of the rice container 1 is locked at the bottom of the lower case body 4, so that the rice container 1 does not move. . In this state, substantially the lower half of the rice container 1 is housed in the lower case body 4, but the upper half is exposed in a protruding manner.

The vegetable container 2 is formed by stacking the first vegetable container 2a and the second vegetable container 2b, and is housed in the lower case body 4 in the vegetable container storage room 28b. At this time, the protruding seat 22 of the container 19 of the second vegetable container 2b located on the upper side fits and engages with the concave portion 25 of the lid 21 of the first vegetable container 2a located on the lower side, and the two move freely. To block. In this state, the first vegetable container 2a is housed in the lower case body 4, but most of the second vegetable container 2b protrudes from the lower case body 4 and is exposed.

After that, the upper case body 5 is arranged on the upper part of the lower case body 4 so as to cover the protruding upper half of the rice container 1 and the second vegetable container 2b, and the fitting step 29 is fitted. It is fastened inseparably by an elastic band (not shown).

During the carrying of the lunch box, the heat of the cooked rice X is sealed in the inside of the rice container 1 having heat insulation and heat insulation, and therefore, the container body 6 and the lid 8 do not take heat on the outer surface. On the other hand, the prepared food Y, which has been heated after cooking, is radiated to the outside via the vegetable container 2 having no heat retention and is cooled to room temperature. Moreover, since the lower case body 4 and the upper case body 5 constituting the outer case 3 do not have heat insulation, the heat released from the vegetable container 2 is easily radiated to the outside via the outer case 3. As a result, the risk of the prepared food Y being heated and putrefying as in the related art is extremely low.

As is apparent from the above-described configuration, the storage chamber 28 has the storage chamber 28a on one half and the storage chamber 28b on the other half formed substantially symmetrically. Is stored in the storage room 28a of the one half and the vegetable container 2 is stored in the storage room 28b of the other half, and the arrangement is reversed, and the vegetable container 2 is stored in the storage room 28a of the one half. At the same time, the rice container 1 can be stored in the storage room 28b in the other half, and the arrangement is flexible. In any of the storage modes, the cylindrical wall 6a of the rice container 1 is generally fitted along one curved wall 4a, 5a (or 4b, 5b), and the circular arc wall 19a of the vegetable container 2 is curved along the other. It is generally fitted along the walls 4b, 5b (or 4a, 5a).

In this regard, in the case where the vegetable container 2 is formed in a cylindrical shape, the vegetable container 2 is freely rotated along the curved walls 4b, 5b (or 4a, 5a) inside the storage chamber 28 to prevent the stored prepared food from becoming out of shape. In addition, there is a problem that a large dead space is generated between the rice container 1 and the vegetable container 2 stored adjacent to each other. On the other hand, according to the above configuration, since the vegetable container 2 is formed to have a substantially D-shaped cross section including the arc wall 19a and the flat wall 19b, free rotation inside the storage chamber 28 is prevented. This contributes to the prevention of side dishes and the like, and ensures good heat radiation of the vegetable container 2 by the arcuate wall 19a and the curved walls 4b, 5b (or 4a, 5a) which are stretched along each other without having a large space therebetween. Further, the dead space generated between the rice container 1 and the adjacent rice container 1 can be made as small as possible, which contributes to securing the capacity of the vegetable container 2 and at the same time, the contact point between the rice container 1 and the vegetable container 2 ( The close portion) is only a partial surface of the cylindrical wall 6a opposed to the flat wall 19b, and thus is suitable for the purpose of the present invention of preventing the rice container 1 from being affected by heat from the rice container 1.

FIG. 3 is a perspective view showing the disassembled state of the embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing an assembled state of the embodiment of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Rice container 2 Vegetable container 3 Outer case 4 Lower case body 4a, 4b Curved wall 5 Upper case body 5a, 5b Curved wall 6 Rice container body 6a Cylindrical wall 8 Rice container lid 19 Vegetable container body 19a Arc Wall 19b Flat wall 21 Vegetable container lid 28 Storage room 28a Rice container storage room 28b Vegetable container storage room

Claims (3)

In a lunch box that stores a rice container and a vegetable container in an outer case so that it can be taken out,
The rice container (1) comprises a container (6) having heat insulation and heat insulation, and a lid (8) having an insulation and heat insulation with an opening of the container openable and closable.
The vegetable container (2) comprises a container (19) having no heat retention, and a lid (21) having an opening portion of the container capable of being opened and closed and having no heat retention,
The outer case (3) is composed of a lower case body (4) having an opening at an upper portion and having no heat insulation and an upper case body (5) having an opening at a lower portion and having no heat insulation. A horizontally long storage chamber 28 is formed inside the outer case (3) with the lower opening edge of the upper case body (5) detachably fitted to the upper opening edge of the body (4),
The storage box (28) is formed by forming a rice container storage chamber (28a) in one half and a vegetable container storage chamber (28b) in the other half. The container (6) of the rice container (1) forms a cylindrical wall (6a) having a substantially circular cross section, and the container (19) of the vegetable container (2) has a substantially D-shaped cross section. To form an arc wall (19a) and a flat wall (19b), and make the radius of curvature d of the cylindrical wall (6a) of the rice container (1) substantially equal to the radius of curvature d of the arc wall (19a) of the vegetable container (2). Make up,
The outer case (3) has one curved wall (4a, 5a) and the other curved wall (4b) so that both ends of the storage chamber (28) are substantially symmetrically bulged outward in an arc shape. , 5b).
Of the rice container storage room (28a) and the vegetable container storage room (28b), the cylindrical wall (6a) of the rice container (1) is placed along the curved wall (4a, 5a) of one of the storage rooms (28a). 2. The container according to claim 1, wherein the accommodating container (2) is accommodated along with the curved wall (4 b, 5 b) of the other accommodating chamber (28 b). 3. Lunch box. The vegetable container (2) is composed of a lower first vegetable container (2a) and an upper second vegetable container (2b) which are vertically stacked, and is stored in a vegetable container storage chamber (28b). The first vegetable container (2a) is located inside the lower case body (4), and the second vegetable vessel (2b) is located inside the upper case body (5). The lunch box according to claim 1 or 2, wherein

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