JP2971462B1 - Incubator for small animals - Google Patents

Abstract

An object of the present invention is to improve a small animal warmer and obtain a warmer having a simple and inexpensive configuration, in which heat conduction to the upper surface is uniform and heat conduction efficiency is good. SOLUTION: A small animal warmer 10 has a heat transfer plate 12 and a metal foil film 14 in a hollow shallow heat insulator case 11.
The heat transfer plate 12 is attached in close contact with the inside of the upper surface of the heat insulating case 11, and heat transfer from the film 14 and direct heat from the heating element 13 are provided. With this heat transfer, the upper surface of the heat insulation case can be kept uniform, and can be manufactured simply and at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small animal warmer for protecting small animals from cold in winter.

[0002]

2. Description of the Related Art When breeding small animals such as hamsters, twenty-day rats, squirrels, snakes, and turtles as pets, the animals become inactive when the cold weather becomes severe, such as in winter. In order to protect the life of such small animals or to maintain their activities, small animal warmers are widely used.

[0003] As an example of such a small animal warmer,
The one shown in FIG. 6 is used. In the illustrated heat retaining device, a heating portion 3 in which a heat retaining plate 2a is in close contact with a heat retaining heater 2 is attached to a case 1 by a leg portion 4 in a space inside a plate-shaped heat retaining case 1 which is divided into two, and a terminal 5 of the heat retaining heater 2 is provided.
Is connected to a connection cord 7 to supply electric power from a commercial power supply to keep the temperature. The small animal rides on the closed thermal insulation case 1 to overcome the cold.

[0004]

By the way, the above-mentioned insulated heater generally has a small capacity of an insulated heater of 10 W to less than 40 W, and generally has a temperature of about 30 to 40 ° C. on an insulated case. The heat retention effect is poor, the temperature distribution is not uniform, and the manufacturing cost is not inexpensive for the small heating capacity.

[0005] The heat retention heater is a method of keeping the heat retention case warm by heating the air in the space inside the heat retention case with a small size that is a fraction of the size of the heat retention case. Because it cannot be warmed. Therefore, the capacity of the heat retaining heater is larger than the size of the heat retaining case.

[0006] Instead of such a heater using nichrome wire, for example, a method in which a heating member generally called a planar heater is attached to the back surface of the heat insulating case or integrally formed on the case plate may be considered. However, the cost of the planar heater is extremely higher than that of the nichrome wire type heater and cannot be used as a small animal warmer.

[0007] The present invention solves the various problems described above,
It is an object of the present invention to provide a small animal warmer having a simple and inexpensive configuration having uniform heat conduction and good heat conduction efficiency.

[0008]

According to the present invention, as a means for solving the above-mentioned problems, a heating element is mounted on a thin heat transfer plate having good heat conductivity in a shallow box-shaped heat insulation case having a hollow inside. The heat transfer heater is installed, and the heat transfer plate is mounted in close contact with the inside of the heat insulation surface of the heat insulation case, and the heating element is cemented around the electric resistance element with cement material to make the cross section polygonal.
One side of the heating element is brought into close contact with the heat transfer plate, and a heat conductive metal foil film coated with an adhesive on one side is attached to the other side surface of the heating element and attached to the heat transfer plate. It was a warmer for small animals.

[0009] In the heat retaining device having the above-described structure, when the heating element is energized, the upper surface of the heat retaining case is kept at a constant temperature continuously. The heat generated by the heating element is directly from the contact surface to the heat transfer plate,
Since a metal foil film is adhered to the other surface, heat is transferred indirectly from this film to the heat transfer plate, so that the entire heat transfer plate is uniformly heated, and the heat transfer plate is provided in close contact The upper surface of the heat-insulating case is also uniform and has a structure that does not allow heat to escape to other parts, so that heat is efficiently transferred and heat is maintained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of the small animal warmer of the embodiment. This warmer 10 is finally assembled in a thin box shape as shown in FIG. As shown in the drawing, the heat retaining case 11 is formed in a hollow thin box shape, and is divided into upper and lower parts as shown in the cross section of FIG. 2, so that the case is made of plastic and integrated. Made in.

Inside the heat insulation case 11, a heat insulation heater in which a heating element 13 is attached to a heat transfer plate 12 by a metal foil film 14 is installed, and the heat transfer plate 12 is in close contact with the inner upper surface of the upper half portion of the heat insulation case 11. Thus, the case 15 is supported by the legs 15 provided at appropriate intervals inside the lower half portion of the case.

When assembling the heat retaining case 11, the upper and lower halves are assembled together by fitting the combined legs 16a and 16b to each other so that the positions thereof match. As shown in FIG. 2, the heating element 13 is formed to have a polygonal shape (square in the illustrated example) and a predetermined length by solidifying the periphery of the electric resistance element 13a using a nichrome wire with cement. ing. The length is slightly shorter than the width of the heat transfer plate 12.

As a step of attaching the heating element 13 to the heat transfer plate 12, an adhesive is applied to one surface of the metal foil film 14, and a long metal foil is attached to the other surface in a roll shape with release paper interposed therebetween. The film 14 is cut into appropriate lengths, adhered to the outer periphery of the heating element 13 with the metal foil film 14 except for one surface, and then the film 14 remaining before and after the heating element 13 is cut.
Is attached to the heat transfer plate 12. Thus, the remaining one surface is directly adhered to the heat transfer plate 12.

The metal foil film 14 is provided with an adhesive length to the extent that it extends to a length slightly shorter than the heat transfer plate 12, whereby the heat generation temperature of the heating element 13 is reduced.
2 on average. A heat conductive material is used for both the heat transfer plate and the metal foil film 14,
In this embodiment, an aluminum plate, an aluminum foil or the like is used. There are various other good thermal conductor materials, such as copper metal.

A wiring 17 is connected to both ends of the heating element 13, and a connection cord 17a for supplying power from an external commercial power supply is connected to the wiring. The coating 13
Although it is covered by a, a thermal fuse F is provided in the middle of the wiring 17 in order to shut off the power supply in case of abnormal heating and to ensure safety. The electric circuit including the heating element 13 and the thermal fuse F may be extremely simplified as shown in FIG.

The warmer 10 of the embodiment having the above-described structure.
Is used by being integrally assembled as shown in FIG. At the time of use, the plastic case may be fitted to a pocket 21 in a dressing table 20 made of pottery, metal or the like in consideration of appreciation. In use, it is only necessary to connect the connection cord 17a to the power supply, and heat is generated continuously.

The heat generation temperature is 30 to 30 on the upper surface of the heat insulating case 11.
The resistance value of the heat retaining heater is determined in advance according to the size of the heat retaining device so as to be about 40 ° C. The heat generated by the heating element 13 is directly transmitted to the surface in close contact with the heat transfer plate 12, and the heat of the outer periphery thereof is transmitted to the heat transfer plate 12 by the metal foil film 14. Therefore, the heat transfer plate 12 is heated evenly over the entire area.

Since the heat transfer plate 12 is tightly supported on the inner upper surface of the heat insulating case 11, heat transfer is efficiently performed on the outer upper surface of the heat insulating case 11 on average. Therefore, if the small animal N rides on the upper surface of the heat retaining case 11 as shown in FIG. 5, good heat retention is provided at any position.

[0019]

As described in detail above, the small animal warmer of the present invention has a heat insulator having a heat transfer plate and a heating element in a heat insulation case such that the heat transfer plate is in close contact with the inside of the upper surface of the case. Then, the heating element was brought into close contact with the heat transfer plate, and was attached to the heat transfer plate by surrounding it with a metal foil film including the outer periphery of the heating element, so that the heat generated by the heating element was uniformly transmitted to the heat transfer plate,
Therefore, the effect of uniformly maintaining the temperature of the upper surface of the heat insulating case is obtained, and the manufacturing cost can be significantly reduced because the configuration including the heating element is simple.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a small animal warmer according to an embodiment.

FIG. 2 is a cross-sectional view as viewed from arrows AA and BB in FIG. 1;

FIG. 3 is an electric circuit diagram of a small animal warmer.

FIG. 4 is an explanatory view of an assembled state.

FIG. 5 is an explanatory diagram of a use state.

FIG. 6 is a schematic configuration diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Insulator for small animals 11 Insulation case 12 Heat transfer plate 13 Heating element 14 Metal foil film 15 Leg 17 Wiring

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H05B 3/06 A01K 1/035 F24D 13/02

Claims (3)

(57) [Claims] 1. A heat insulation heater having a heating element mounted on a thin heat transfer plate having good thermal conductivity is installed in a shallow box-shaped heat insulation case having a hollow inside, and the heat transfer plate is located inside a heat insulation surface of the heat insulation case. The heating element is cemented around the electric resistance element with a cement material to form a polygonal cross section.One side of this heating element is brought into close contact with the heat transfer plate, and an adhesive is applied to one side. A small animal warmer comprising a good conductive metal foil film attached to the other side of the heating element and attached to a heat transfer plate. 2. The small animal warming device according to claim 1, wherein the heat transfer plate is supported by legs inside the heat retaining case and is provided in close contact with the inside of the heat retaining surface of the heat retaining case. 3. The small animal warmer according to claim 1, wherein the heat conductive plate having good thermal conductivity is an aluminum plate, and the metal foil film is an aluminum foil or a copper foil film.