JP2002360326A - Lunch box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable lunch box, especially the lunch box storing a rice container and a side dish container in an outer case such that the containers can be freely taken out, and preventing heat influence of the rice container upon the side dish container. SOLUTION: In this lunch box, the rice container and the side dish container are stored in the outer case such that the containers can be freely taken out. The rice container comprises a container body with heat-insulating/retaining property, and a lid body with a heat-insulating/retaining property openably and closably covering an opening part of the container body. The side dish container comprises a body without a heat-retaining property, and a lid body without a heat-retaining property openably and closably covering an opening part of the container body. The outer case comprises a lower case body having an opening part in an upper part, and an upper case body without a heat- retaining property having an opening part in a lower part. The upper opening edge of the lower case body is detachably installed with the lower opening edge of the upper case body. The lower case body forms a lower storage chamber storing the rice container, while the upper case body forms an upper storage chamber storing the side dish container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 removably stored in an outer case.

[0002]

2. Description of the Related Art Conventionally, various kinds of lunch boxes have been provided, but 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 is popular. Is gaining.

[0003] For example, in a conventionally known lunch box, a rice container and a vegetable container are 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 closed. A configuration in which the stacked containers are integrally combined by being covered with a lid and detachably engaging a pair of rotatable ear pieces provided on the lid with an engagement piece of the lowermost container. And

[0004]

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

[0005] For this reason, according to the above-mentioned lunch box in which the rice container and the vegetable container are stacked in a multi-stage manner, even after the prepared food stored in the vegetable container has cooled down after a predetermined time has elapsed, the rice container is kept in the rice container. Since the rice is kept in a warmed state, by transferring heat from the vertically stacked rice containers to the vegetable container, an environment where the prepared food is warmed and easily perishable is generated, which may cause food poisoning.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a lunch box which prevents heat from being transmitted from a rice container to a vegetable container and facilitates cooling of the vegetable container.

Therefore, the present invention is configured as a means. In a lunch box in which a rice container and a vegetable container are removably housed in an outer case, the rice container has a heat-insulating and heat-insulating body, The veggie container comprises a lid having a heat insulating property and a lid body having a heat insulating property, and a lid having a heat insulating property, and an opening of the container body capable of being opened and closed. The outer case is composed of a lower case body having an opening at an upper part and an upper case body having no heat insulation having an opening at a lower part. The lower edge of the upper case body is detachably attached to the opening edge, and the lower case body forms a lower storage chamber for storing rice containers, and the upper case body defines an upper storage chamber for storing vegetable containers. The point is that it is formed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1 and FIG. 2, the lunch box houses a rice container 1 having heat insulation and heat insulation, a vegetable container 2 having no heat insulation and heat insulation, and these two containers 1 and 2 stored in a stacked state. And an outer case 3.
Is composed of 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, and also has heat insulation and heat insulation and opens and closes an upper opening 7 of the container 6. And a lid 8 that covers freely.

As shown in FIG. 2, the vessel 6 constitutes a vacuum adiabatic heat-insulating container comprising inner and outer double walls 9a and 9b made of stainless steel, and a disc-shaped recess formed in the bottom of the outer wall 9b. A seat plate 10 made of synthetic resin is fixed. On the other hand, the lid 8
The concave portion 1 has a knob 11 extending in the diameter direction on the upper surface.
An upper plate 13 made of a synthetic resin in which the upper and lower plates 2 and 12 are formed, and a bowl portion 14 made of a synthetic resin fixed to a lower side of the upper plate portion 13. Is filled with the heat insulating material 15 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 which is inserted into the opening 7, and the outer peripheral ridge of the bowl 14 and the inner wall are formed. The locking means 16 formed by the inner peripheral ridge 9a is locked. In this state, the downwardly bent piece 17 of the upper plate portion 13 extending to the outer periphery of the bowl portion 14 surrounds the opening edge of the body 6 and the bent piece 17
The seal packing 18 provided inside the container 6 comes into close contact with the opening edge of the container 6.

(Structure of Vegetable Container) The vegetable container 2 has a bottomed cylindrical body 19 having no heat insulation, and an opening 20 at the top of the body 19 also having no heat insulation. And a lid 21 that covers freely.

As shown in FIG. 2, the container 19 is formed in a bowl shape made of a synthetic resin, provided with a protruding seat 22 at the bottom, and
Flange 23 extending to the outer periphery near opening edge 20a
Is formed. 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.

(Structure of Outer Case) The lower case body 4 constituting the outer case 3 is formed of a synthetic resin.
It is formed in a cylindrical shape with a bottom, provided with an opening 26 in the upper part, and constitutes a lower storage chamber 27 for storing almost the entirety of the rice container 1 in a suitable manner. A male screw 2 is provided on the outer periphery of the opening edge of the lower case body 4.
8 are provided around the periphery, forming a flange 29 extending to the outer periphery in the vicinity of the opening edge. A shaft piece 30 is provided at two locations diametrically opposed to each other and protrudes outward from the cylinder from below the flange 29, so that a shoulder strap (not shown) can be connected. I have.

The upper case body 5 constituting the outer case 3 is
It is formed of a synthetic resin, is formed in a cylindrical shape having a top wall, is provided with an opening 31 at a lower portion, and forms an upper storage chamber 32 for storing almost the entire vegetable container 2. A concave wall 34 recessed on the top wall with a grip portion 33 extending in the diametric direction interposed therebetween,
34 is formed, and a female screw 35 is provided around the inner periphery of the opening edge.

In the case of the illustrated example, the lower case body 4 is a cylindrical body made of a synthetic resin having a single wall. Therefore, the lower case body 4 does not have a heat insulating and heat insulating property, but forms a heat insulating and heat insulating case having a double wall. Is also good. However, for the purpose of the present invention, it is necessary that the upper case body 5 does not have a heat insulating and heat insulating property, and is constituted by a single wall as shown in the figure regardless of whether it is made of synthetic resin or metal, Good heat radiation cooling.

(Operation) According to the lunch box having the above configuration, cooked rice X is put in the rice container 1. The rice container 1 holds the cooked rice X in a heat-insulated state since the container 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 rape container 2. Greens container 2
Is covered with the lid 21 which also has no heat retaining property, so that even when the prepared food Y is at a high temperature during storage, heat is quickly radiated and cooled to room temperature.

When carrying a lunch box, for example, when going out, the rice container 1 is first stored in the lower storage chamber 27 of the lower case body 4. As shown in FIG. 2, with the seat plate 10 placed on the bottom of the lower case body 4, the outer wall 9 b and the lid 8
The downward bent piece 17 is substantially fitted to the inner peripheral wall surface of the lower case body 4, so that the rice container 1 does not float inside the lower storage chamber 27. In this state, the rice container 1 is stored so that the upper plate portion 13 of the lid 8 is positioned near the opening edge of the lower case body 4.

Next, the vegetable container 2 is placed on the rice container 1. At this time, the protruding seat 22 of the container 19 in the vegetable container 2,
The recess 12 of the lid 8 in the rice container 1 is mutually locked. Therefore, the vegetable container 2 is stably placed and does not move at least in the radial direction.

After that, the upper case body 5 is placed on the upper part of the lower case body 4 so as to cover the vegetable container 2,
If the female screw 35 is screwed onto the male screw 28 while rotating the upper case body 5 via the gripping piece 33 to connect the male screw 28, the vegetable container 2 is stored in the upper storage chamber 32. In this state, the concave wall 34 of the upper case body 5 enters and locks into the concave portion 25 of the lid 21 of the vegetable container 2, so that the vegetable container 2 is vertically and radially inside the upper storage chamber 32. (Left and right directions in the drawing)

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, so that the container 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 upper case body 5 constituting the upper storage chamber 32 in which the vegetable container 2 is housed also has no heat retention, heat released from the vegetable container 2 is easily radiated to the outside via the upper case body 5. . As a result, the risk of the prepared food Y being heated and putrefying as in the related art is extremely low.

[0023]

According to the present invention, in a lunch box in which the rice container 1 and the vegetable container 2 are separately provided, the rice X is stored in the heat-insulating rice container 1 to confine heat, while the side dish is prepared. By storing Y in the vegetable container 2 having no heat insulation, heat is released, and the rice container 1 and the vegetable container 2 are placed in the lower storage room 27 of the lower case body 4 and the upper storage room 32 of the upper case body 5, respectively. Because it is configured to be stored separately, it does not create an environment that is easy to rot by heating the prepared food by transferring heat from the rice container to the vegetable container as in the past, and has the effect of guaranteeing the safety from food poisoning. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an exploded state of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing an assembled state of one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice container 2 Vegetable container 3 Outer case 4 Lower case body 5 Upper case body 6 Rice container body 8 Rice container lid 19 Vegetable container body 21 Vegetable container lid 27 Lower storage room 32 Upper storage room

Claims (1)

[Claims] 1. A lunch box in which a rice container and a vegetable container are removably housed in an outer case, wherein the rice container 1 has a heat-insulating and heat-insulating body 6 and an opening of the vessel that can be freely opened and closed. The vegetable container 2 is covered with a lid 8 having heat insulation and heat insulation properties. The vegetable container 2 has a container body 19 having no heat insulation property, and has an opening portion of the container body capable of being opened and closed and has no heat insulation property. The outer case 3 comprises a lid 21 and a lower case 4 having an opening at an upper part.
And an upper case body 5 having an opening at a lower portion and having no heat insulating property, and an upper opening edge 28 of the lower case body 4.
The lower case body 4 is formed so that the lower opening edge 35 of the upper case body 5 is detachably attached thereto. The lower case body 4 forms a lower storage chamber 27 for storing the rice container 1 and the upper case body 5 stores the vegetable container 2. A lunch box characterized by having an upper storage chamber 32 formed therein.