JPS6337864Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to containers for boxed lunches (referred to as ekiben) and catered lunches sold inside stations or onboard trains.

(Prior art and its problems) Conventionally, this type of bento container had separate areas for rice and side dishes, and as time passed, the container became cold and the bento became unpalatable. It has disadvantages such as rice sticking to the container and being difficult to remove.

(Means for Solving the Problems) The present invention was researched to solve these drawbacks.The lunch container is doubled to create a space for storing the heat source, and the iron powder necessary for the exothermic reaction is placed inside the space. It has been found that it is possible to provide hot rice for a long period of time by inserting a heating element containing a heat generating agent such as, and generating heat.

The present invention will be described in detail with reference to the illustrated embodiment: an outer container 2 having a lid 1 that is vertically rotatable;
The inner container 3 is shallower than the outer container 2, and locking flanges 4 are provided on the left and right upper edges, and the flanges 4 are attached to the upper edge 5 of the outer container 2. The heat source storage space 7 can be freely locked, and a heat source storage space 7 can be freely inserted into which a heat generating element 6 packed in a bag containing a heat generating agent can be inserted when the inner container 3 is fitted into the outer container 2. At this time, the bottom surface of the heating element 6 and the inner container 3 is made to allow air to circulate, but the wall 1 rises on the bottom surface of the inner container 3.
A large number of heat retention recesses 12 surrounded by 1 and 11,
12, and the rising walls 11, 11 are provided with communicating notches 13, 13 that communicate with the ventilation holes 8, which will be described later.
The heat retaining recesses 12, 12 and the ventilation hole 8 are communicated with each other. The height of the rising wall 11 is preferably about 5 mm. In addition, in Fig. 2, the left and right heat insulation recesses 12, 12
It is not necessary to provide the communicating notch 13 in the rising wall 11 between the two. Heating element 6 and rising wall 1
The tips of Nos. 1 and 11 are brought into contact, but may be partially separated.

In the figure, reference numerals 8, 8 are ventilation holes provided in the side walls 9, 9 of the outer container 2, which communicate with the heat source storage space 7 and the heat retaining recess 12, and 10 is a moisture-absorbing cloth.

(Function) The present invention is implemented as described above, and to use it, you need to put rice into the inner container 3, and
Put in a side dish that can be heated, and flatten the heating element 6 that generates heat by contacting water or air in the heat source storage space 7, and fit the inner container 3 containing rice, etc. into the outer container 2. At this time, the locking collar 4 of the inner container 3 is locked to the upper edge 5 of the outer container 2. After that, cover with lid 1 and wrap with heat-retaining cloth, wrapping paper, etc. as appropriate. Incidentally, part or all of the side wall 9 (where the ventilation hole 8 is located) may be made freely openable and closed, and the heating element 6 may be caused to react and generate heat at any time to enter the heat source storage space 7 and close the side wall 9. good.

(Effects) As mentioned above, this project consists of an outer container with ventilation holes in the side wall and an inner container that can be fitted into the outer container. The collar can be freely latched to the upper edge of the outer container, and a heat source storage cavity can be formed when the outer container is fitted into the outer container. A heat retaining recess is formed, and a communicating notch is provided in the rising wall to allow free communication between the heat retaining recess and the ventilation hole, and the tip of the rising wall can freely contact the heating element stored in the heat source storage cavity by laying a moisture-absorbing cloth. Therefore, the heat of the heating element stays in the heat-retaining recess, increasing thermal efficiency and maintaining the heat-retaining effect for a long time.Water droplets on the inner container are also absorbed by the heating element one after another, reducing the exothermic reaction of the heating element. This helps in all areas and allows you to enjoy a comfortable trip without staining your clothes. Furthermore, since the rice, etc. is separated by the height of the rising wall of the heat-retaining recess, it is kept at an appropriate temperature and delicious ekiben can be provided without drying out.
As a result of the experiment, you can eat hot food for about 6 hours after setting the heating element, and after eating, you can use it as a pocket warmer to warm your legs, waist, etc. Also, while the rice is still warm, it retains steam, so it can be easily separated from the inner container, resulting in cleanliness and no waste.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of the bento container of the present invention, and FIG. 2 is a side sectional view of the same. 1 is a lid, 2 is an outer container, 3 is an inner container, 4 is a locking collar, 5 is an upper edge, 6 is a heating element, 7 is a heat source storage space,
8 is a ventilation hole, 11 is a rising wall, 12 is a heat retention recess, and 13 is a communicating notch.

Claims (1)

[Scope of utility model registration request] It consists of an outer container with a ventilation hole on the side wall and an inner container that can be fitted into the outer container.The inner container is shallower than the outer container, and has a locking collar attached to the upper edge of the outer container. The inner container is designed to be able to be locked freely so that a heat source storage space can be formed when the inner container is fitted into the outer container, and a number of heat insulating recesses surrounded by rising walls are formed on the bottom of the inner container. A lunch container in which a communication notch is provided to allow free communication between a heat insulating recess and a ventilation hole, and a rising wall can freely come into contact with a heating element housed in a heat source storage cavity by laying a moisture absorbing cloth.