JP2000152881A - Portable heating and thermal insulation tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously heat a lunch box and a can drink with one heating and thermal insulation tool, by moving a face-shaped heating element according to shape or size of an object to be heated without being fixed to a wall surface of a casing. SOLUTION: A casing 1 has an openable/closable opening in at least one surface, has a space receiving objects 8 to be heated in it, allows the objects 8 to be heated to be removed from the opening, has small amount of radiated heat during heating, and is convenient for carrying. A face-shaped heating element 5 is provided so that it is movable according to the shape and size of the objects 8 to be heated so as to be always brought into close contact with the objects 8 to be heated even when the objects 8 to be heated with various sizes and shapes, such as a lunch box, a can drink, and a baby bottle are stored in the easing 1. For example, at least one side of the face-shaped heating element 5 is fixed to the casing 1 through a mounting portion 7. Since the face-shaped heating element 5 can be moved according to the shape and size of the objects to be heated without fixing to the wall surface of the casing 1, the objects to be heated is not restricted, and the lunch box and the can drink are simultaneously heated and easily carried.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and warming device, and more particularly to a portable heating and warming device for heating and keeping canned beverages, lunch boxes, baby bottles, and the like and easy to carry.

[0002]

2. Description of the Related Art Conventionally, as a lunch box heating tool, a lunch box heat-insulated packaging container having a heat-insulating packaging box and an electric heating and warming device built in the packaging box (Japanese Utility Model Application Laid-Open No. 61-8603).
No. 0) has been proposed. In addition, a heating device for canned beverages provided with a heater at the bottom of the main body (Japanese Utility Model Application Laid-open No. 63-201)
No. 838) and a baby bottle warmer in which a heating wire is buried inside a heat insulating material (Japanese Utility Model Laid-Open No. 4-26138).

[0003]

However, in each of the above-mentioned heating and heat retaining devices, the heating element is buried in the container, and the shape and size of the storage section for the object to be heated are determined. The objects to be heated are limited to lunches, canned beverages, and baby bottles, and have a drawback that they are not versatile. In addition, there is a disadvantage that a plurality cannot be heated at the same time.

[0004] For this reason, the object to be heated is not limited, and a single heating and warming device can heat lunches, canned beverages, and baby bottles alone, or a plurality of types, or a plurality of types simultaneously. There is a need for a heating and warming device that is easy.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, the shape and size of the object to be heated without fixing the planar heating element to the wall surface of the container. It has been found that various objects to be heated can be heated and kept warm by being able to move according to the temperature.

That is, the present invention comprises a container having an opening which can be opened and closed on at least one surface, a planar heating element, and a power supply connection portion, wherein the planar heating element has a shape of an object to be heated in the container. And a portable heating and warming device provided so as to be movable in accordance with the size.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a container having an openable and closable opening on at least one surface has an openable and closable opening on at least one surface, and has a space for receiving an object to be heated. The object to be heated can be taken out from the opening, and has little heat dissipation at the time of heating, and is convenient to carry. Specifically, a bag type as shown in FIGS. 1 and 2,
In addition to the box type shown in FIG. 3, a second back type, a document case type and the like can be exemplified.

Any material may be used as long as it has heat resistance and heat insulating properties. For example, woven fabrics made of synthetic fibers such as polyester, polyamide and polypropylene and natural fibers such as cotton, hemp and wool, Non-woven fabric, synthetic resin sheet, synthetic rubber sheet, natural rubber sheet, natural leather,
A single sheet of synthetic leather or the like, or a composite sheet combining the above materials, or a sheet of the above material as an outer material, and a synthetic fiber, a cotton-like material of natural fibers, or a foam of polyethylene, polyurethane or the like as an insulating layer is exemplified. be able to.

The planar heating element in the present invention is not particularly limited as long as it is planar and can generate desired heat when energized, and a conventionally known planar heating element can be used. it can. In addition, the planar heating element referred to here is not only a hard planar element, but also follows the shape of the object to be heated, and can be deformed according to the shape of a flexible sheet-shaped heating element, and substantially the shape of the object to be heated. A planar heating element including a molded curved surface portion is also included.

As the heating element used for the sheet heating element, a sheet heating element, a linear heating element and the like can be used. As the planar heating element, for example, carbon cloth or metal based conductive resin glass cloth, polyester film,
Examples thereof include those obtained by impregnating, coating, or printing a substrate such as a polyimide film or mica, and those obtained by etching a stainless steel foil, a nichrome foil, a copper nickel foil, or the like. The planar heating element is usually made of silicone, polyester, synthetic resin such as polyamide, rubber,
It is coated with an electrically insulating material such as an epoxy impregnated glass cloth to form a sheet heating element.

As the linear heating element, nickel chromium,
A metal resistance wire such as copper nickel or iron chrome is used.
In the case of a linear heating element, a metal resistance wire is stretched around a substrate in a straight line, spiral shape, meandering shape, or the like, and the surface is covered with the above-described electrically insulating material to form a sheet heating element,
A metal heating wire covered with an electrically insulating material is stretched around the substrate in a straight line, meandering, etc. to form a sheet heating element, or a metal resistance wire is spirally wound around a glass core,
A heating wire covered with an electrically insulating material is stretched around the substrate in a straight line, meandering shape, or the like to form a planar heating element.

The sheet heating element may be manufactured using the above-described heating element alone or may be manufactured by stacking two types of heating elements via an electrically insulating material. In addition, a planar heating element can be manufactured by arranging two types of heating elements in parallel.

The planar heating element can always be brought into close contact with the objects to be heated, even when the objects to be heated, such as lunch boxes, canned beverages, baby bottles, etc., are stored in the container. Thus, it is provided so that it can be moved according to the shape and size of the object to be heated. Specifically, as shown in FIG. 2, a method of fixing at least one side of the sheet heating element to the container through the mounting portion, and fixing the sheet heating element to the container as shown in FIG. In addition, a method of providing a slidable mechanism for the object, a method of providing a plurality of sheet heating element fixing means on the bottom or side wall of the object without fixing the sheet heating element to the object, and the like can be given.

In the present invention, the power supply connecting portion means a portion for supplying power to the sheet heating element, and is usually connected to the other end of the cord connected to the electrode of the sheet heating element with a 100 V household use. It has a plug that can be connected to a power supply or a plug that can be connected to a vehicle power supply (for example, a power supply for a cigarette lighter). The power supply circuit of the sheet heating element can be divided, and the circuits can be connected in series or in parallel via a changeover switch. It can also be. In addition, by providing a transformer between the power supply unit of the planar heating element and a household 100V power supply plug or a vehicle power supply connection plug, the same planar heating element can be shared with a household 100V power supply and a vehicle power supply. You can also. However, to simplify the power supply connection, to prevent the risk of damage to the planar heating element due to erroneous operation during use and the danger of overheating, and to reduce the weight of the portable heating and warming device, a household 100V power supply is required. In addition, it is preferable to provide a configuration in which a planar heating element corresponding to each of the vehicle power supplies is provided. In that case, it is preferable to use two types of planar heating elements in an overlapping manner.

In the present invention, a heating object fixing portion may be provided in order to fix the object to be heated so as to be in contact with the planar heating element during heating. The object to be heated is usually arranged at a position where the object to be heated can be fixed between the inner wall surface of the container and the planar heating element. Specifically, as shown in FIG. 2, the heated object fixing portion may be provided on the surface of the planar heating element, or may be provided on the inner wall surface of the container. Further, a fixing portion formed between the inner wall surface of the object and the planar heating element may be provided. It may be provided so as to be located between the inner wall surface and the planar heating element.
Further, these may be provided in combination.

The shape and size of the object-to-be-heated fixing portion may be any shape and size that can accommodate the object to be fixed, and examples thereof include a pocket type and a band type. What is a band type?
Both ends of a band-shaped cloth or rubber band are fixed to a container or a planar heating element.

The material of the pocket when the object-to-be-heated fixing portion is of a pocket type is not particularly limited as long as it can withstand heating and can easily transfer heat to the object to be heated. For example, polyester, polyamide,
Woven or non-woven fabrics made of synthetic fibers such as polypropylene or natural fibers such as cotton, hemp, wool, or synthetic resin films such as polyvinyl chloride, nylon, polyester, polyethylene, and polypropylene alone or composite films of the synthetic resin films And so on. In the case of the band type, the same material as that of the pocket type can be used. However, it is convenient to use a woven cloth or a band having elasticity.

In the present invention, a fastener, a hook-and-loop fastener, a button, a hook, and a fastener are provided at the opening of the container in order to facilitate the taking in and out of the object to be heated or to prevent heat from escaping from the opening of the container. Or a cover plate may be provided.

In the present invention, for the purpose of facilitating portability, a levee or the like may be provided on the container.

The portable heating and heat retaining device of the present invention may be provided with a temperature controller and an over-temperature prevention device so that the temperature does not become excessively high. Examples of temperature controllers include:
Examples include a bimetal thermostat, a thermal reed switch, and a combination of a thermistor and a control circuit. Examples of the overheat prevention device include a bimetal thermostat, a temperature fuse, and the like. The set temperature of the temperature controller is determined by the object to be heated, but is usually 100 ° C. or lower. Further, the operating temperature of the over-temperature prevention device is set to a temperature which is higher by about 20 to 50 ° C. than the set temperature of the temperature controller.

Further, a signal for notifying that heating is being performed or that heating has been completed, for example, a lighting device such as a pilot lamp, a buzzer or an electronic sound generating device, or a combination thereof may be provided.

[0022]

According to the present invention, since the sheet heating element can be moved according to the shape and size of the object to be heated without being fixed to the wall surface of the container, the object to be heated is not limited. Lunches, canned beverages, baby bottles, etc. can be heated at the same time and are easy to carry. In addition, both a household 100V power supply and an automobile power supply can be used. Further, by providing the heated object fixing portion, the heated object can be efficiently heated.

[Brief description of the drawings]

FIG. 1 is a perspective view of a portable heating and warming device as an example of the present invention.

FIG. 2 is a perspective view when the portable heating and warming device of FIG. 1 is opened.

FIG. 3 is a perspective view of another example of the present invention when a portable heating and warming device is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Entering material 2 Fastener 3 Household 100V power supply plug 4 Automobile power supply plug 5 Planar heating element 6 Heated object fixing part 7 Planar heating element attachment part 8 Heated object 9 Dike 10 Cover plate 11 Button 12 Surface Heating element slide mechanism

Claims (5)

[Claims] 1. An object having at least one openable and closable opening, a planar heating element, and a power supply connection portion, wherein the planar heating element has a shape and a size of an object to be heated in the receptacle. A portable heating and warming device characterized by being provided so as to be able to be moved in accordance with the condition. 2. A home-use power supply connecting part is connected to the other end of at least one cord connected to the electrode of the sheet heating element.
The portable heating and warming device according to claim 1, wherein a plug that can be plugged into a V power supply and / or a plug that can be connected to a vehicle power supply is connected. 3. The mobile phone according to claim 1, wherein the sheet heating element is a stack of a sheet heating element connectable to a household 100V power supply and a sheet heating element connectable to an automobile power supply. Mold heating and warming tool. 4. A means for fixing an object to be heated at at least one position selected from the inner wall surface of the container, the planar heating element, and at least one between the inner wall surface of the container and the planar heating element. 2. The portable heating and warming device according to 1. 5. The portable heating and warming device according to claim 1, wherein at least one selected from a fastener, a hook-and-loop fastener, a button, and a hook is provided on at least a part of the opening of the container.