JPH0430988Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a heating device for heating and keeping lunch boxes or other items that require heat retention.

Conventional Technology Conventionally, chemical body warmers, which contain iron oxide, oxidation promoters, etc. inside the bag and generate heat when it comes into contact with the outside air (oxygen), have been used to heat and keep lunch boxes and other items warm. In this case, the medical warmer is placed on the outside of the lunch box and wrapped in a piece of cloth to keep it warm.

Problems that the invention aims to solve In the case of the above conventional example, the heat from the medicated body warmer easily escapes to the outside through pieces of cloth, etc., and the time the medicated body warmer can be used is shortened. There was a problem that it could not be used effectively.

This invention solves these problems,
The heat from heating elements such as medical warmers can be used effectively,
The object of the present invention is to provide a heat-retaining device that provides excellent heat-retaining effects.

Means for Solving the Problem In order to solve this problem, the present invention provides a heating element storage section at the lower end in a container made of a heat-retaining material and having an opening at the upper end, and covers the upper side of the container. A heat-retaining object storage section is provided to transmit the heat of the heating element stored in the heat-retaining object storage section to the heat-retaining object stored in the heat-retaining object storage section, and the upper end opening of the container is closed. A lid is provided, and the container is further provided with an air hole passing through the side to the heating element storage portion, and with the lid placed on the container, the container faces upward and downward from the upper end and the lower end communicates with the air hole. It is equipped with a groove.

Effect With this configuration, the heat of the heating element housed in the container made of a heat-retaining material can be effectively transferred to the object to be kept warm stored in the container, and the By covering with a lid, heat radiation from the object to be kept warm can be prevented, and an excellent heat retention effect can be obtained. In addition, since the air hole that communicates with the heating element housing at the lower end of the container is formed toward the side of the container, the object to be kept warm may be There is no problem with water droplets leaking from the air holes.
Furthermore, even if the air vent near the bottom end is closed by wrapping the heat insulating device in a non-breathable cloth, etc., there is a groove formed on the side of the container that extends upward and downward from the top edge, so the air vent can be inserted through this groove. More air can be taken into the heating element housing.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In Figures 1 to 4, reference numeral 1 denotes a container with an open top made of a material with high heat retention, and a recess 3 for housing a heating element 2 such as a medical body warmer is formed at the lower end of the interior of the container 1. There is. Reference numeral 4 denotes an internal container which is placed on and received by the stepped portions 5, 5 on both the left and right sides of the container 1, and is housed in the container 1 so as to close the upper end of the recess 3. Rice, side dishes, etc. are stored in this container. It is constructed of plastic or aluminum to accommodate the lunch box 6. Reference numeral 7 denotes a lid that closes the upper end opening of the inner container 4, and is made of the same material as the inner container 4. A sheet 8 is placed on the lunch box 6 in the inner container 4, and is made of a water-absorbing material such as paper so as to absorb moisture generated by the heat of the lunch box 6. Reference numeral 9 denotes a lid that closes the upper end of the container 1. By the way, the container 1 and the lid 9 are made of materials with high heat retention properties such as styrofoam, sponge-like materials, plastic, cardboard such as cardboard, and nonwoven fabric. In this state, two parallel grooves 10 are formed on both the left and right side surfaces, extending from the upper end to the formation height of the step portion 5 and extending in the vertical direction. Furthermore, a lattice-shaped groove 11 is formed in the inner bottom surface of the recess 3. By the way, each of the left and right stepped portions 5 is recessed so that the center thereof is flush with the inner bottom surface of the recessed portion 3, and the lower end of the groove 10 is connected to the groove 11 through this recessed portion 12.
Air holes 13 are formed near the lower ends of both left and right sides of the container 1 so as to communicate with the container 1 .

In the above structure, the heating element 2 is housed in the recess 3, the inner container 4 containing the lunch box 6 is placed on the steps 5, 5, and the lid 9 is closed as shown in FIG. From the air hole 13 to the recessed part 12
Air flows into the lattice-shaped grooves 11 through
Air for the heating element 2 to generate heat is obtained. Recess 3
The heat of the heating element 2 generated inside the inner container 4 is transferred to the inner container 4.
It is transmitted to the lunch box 6 inside. At this time, the heat of the heating element 2 is retained in the recess 3 whose upper end is closed by the bottom surface of the inner container 4, and is effectively transmitted to the inner container 4 without escaping to the outside, thereby improving the heat retention effect of the lunch box 6. I can do it. Furthermore, the lid 9 is placed on the upper end of the container 1 to prevent heat radiation from the lunch box 6.

By the way, when the thermal insulation device according to this embodiment is carried around, it may be wrapped in a non-ventilated cloth, for example, and in this case, the air hole 13 near the lower end may be closed by the cloth. Therefore, by providing the grooves 10 that face upward and downward from the upper end as described above, air flowing from the upper end of the groove 10 along the groove 10 can be taken into the lattice-shaped groove 11 through the air holes 13.

In the above embodiment, the lunch box 6 is placed in the inner container 4 to keep it warm, but the article to be kept warm (the object to be kept warm) is not limited to the lunch box 6.

Effects of the invention As described above, according to the invention, a heating element such as a medical warmer is housed in a container made of a heat-retaining material, and the heat of the heating element is transferred to the heated object stored in the container. Furthermore, by covering the top end of the container with a lid, heat radiation from the object to be kept warm can be prevented, and an excellent heat retention effect can be obtained. In addition, according to the present invention, the air hole that communicates with the heating element housing at the lower end of the container is formed toward the side of the container. There is also no problem of leakage of water droplets from the object to be kept warm from the air holes. Furthermore, even if the air vent near the bottom end is closed by wrapping the heat insulating device in a non-breathable cloth, etc., there is a groove formed on the side of the container that extends upward and downward from the top edge, so the air vent can be inserted through this groove. More air can be taken into the heating element housing.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall longitudinal sectional front view, Fig. 2 is a plan view of the container, and Fig. 3 is a plan view of the container.
The figure is a vertical sectional side view of the container, and FIG. 4 is an overall perspective view. 1... Container, 2... Heating element, 3... Concavity, 4...
...inner container, 5...stepped section, 6...lunch box, 7,9...
...Lid, 10, 11...Groove, 13...Air hole.

Claims (1)

[Scope of utility model registration request] A heating element storage section is provided at the lower end of a container made of a heat-retaining material and has an opening at the upper end, and a heat-retaining object storage section is provided above the container to absorb the heat of the heating element stored in the heating element storage section. The container is configured to transmit the heat to the heat-retaining object stored in the heat-retaining object storage section, and is provided with a lid that closes the upper end opening of the container, and further has an air hole connected to the heating element storage section on the side of the container. 2. A heating and warming device, which is provided with a groove extending through the side of the container and, when the lid is placed on the container, on the side surface of the container, the groove facing upward and downward from the upper end and communicating with the air hole at the lower end.