JPS5836973B2 - hot and cold pad - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating/cooling pad for warming or cooling a human body or an article.

Conventionally, for example, as a method of cooling the forehead of a sick person with a fever,
Ice was placed in a rubber bag and placed on the forehead of the patient, but this method required time and effort to prepare and replace the ice, and it was heavy.

Furthermore, in the past, people who went fishing or golfing, for example, warmed their bellies by wearing warmers on their bellies, but this method used heat and heat to generate heat, which resulted in bad odors, making it difficult to use open flames or replace benzine. There were problems in that it was time-consuming and bulky.

Furthermore, heating pads that utilize the heat generated by heating wires have been known, but this method requires safety measures to cope with abnormal temperature rises in the heating wires, such as the need for parts such as thermoswitches. There was a problem.

Moreover, the conventional methods described above have the disadvantage that they only have the function of heating or cooling.

- An object of the present invention is to solve the above-mentioned problems and drawbacks and to provide a pad that is easy to attach to the human body or an article and is easy to use.

Hereinafter, the present invention will be explained in detail based on the drawings.

1 to 3, 1 shows two different metals 2 and 3, such as lead and copper, and a pair of electrodes 4 and 5 that sandwich the metals 2 and 3 between the electrodes 4 and 5. It is a thermoelement having electrodes 4 and 5 through which an electrically closed circuit is formed, and has current-temperature characteristics as shown in FIG.
3 is clamped by electrodes 4 and 5 as shown in FIG.

Reference numerals 8 and 9 indicate band-shaped heat transfer bodies, which are made of a flexible material with good heat conductivity, such as aluminum alloy.

The heat transfer bodies 8 and 9 are connected to the electrode 4 via first insulators 6 and 7 which are made of ceramic material and have good heat conductivity and good electrical insulation.
, 5, and is fixed to a frame 10, which will be described later.

The frame 10 is made of an elastic material such as rubber, and is formed into a ring shape with a length L1 width W and a thickness D.

A thermoelement 1 is disposed on the inner peripheral edge of the frame 10 via a ring-shaped second insulating member 11 made of a material such as urethane foam, which has good heat insulation properties, low specific heat, and flexibility. The peripheral edges of the heat transfer bodies 8 and 9 are fixed to the front and back surfaces of the frame 10.

The external length L of the frame 10 is longer than the width W, and is elongated, and the thickness D is thinner than the width W.

On both sides of the frame 10 in the lateral direction, vent holes 21 communicate with the thermoelement 1 via openings 22 (FIG. 2) of the second insulator 11.

The ventilation hole 21 allows the heated air around the thermo element 1 to be ventilated with the outside, thereby improving the thermal efficiency of the heat transfer bodies 8 and 9 of the thermo element 1.
It is an electrical connection wire that passes a direct current by applying an electromotive force to it.
It is provided along the longitudinal direction of the frame 10.

A pair of band stops 13, 13 are formed at both ends of the frame 10 in the longitudinal direction.
, 13 are attached to bands 14 and 15, respectively.

On the front and back surfaces of the ends of the bands 14, 15,
A pair of hook-and-loop fasteners 16, 17''J? and 18, 19 are attached which fit together to form a loop.

20 Temperature material, made of tape or paint.

FIGS. 6 and 7 show other embodiments of the pad of the present invention. In FIG. 7, an inner bag 25 made of a heat-resistant and flexible material such as polyethylene resin and a thermally conductive material such as aluminum foil are shown. Inside the double bag 27, which consists of an outer bag 23 made of a good quality material, there is a material such as gelatin that does not solidify even at sub-zero temperatures.
A heat transfer bag is shown in which a heat transfer material 24 made of a flexible material that expands little even at a temperature of 40 to 50°C is filled and sealed, and mounting holes 26, 26 are formed in the bag 27. .

A hook-shaped fixture 2 7.2 7 is provided on one heat transfer body 9, and the mounting holes 26, 26 of the heat transfer bag are connected to the fixture 27.
, 27 are fitted and pressed into the fittings 27, 27, and the heat transfer bag is brought into close contact with the heat transfer body 9 to form a pad, which has good adhesion to the human body and objects and is flexible, making it easy to use. is winning.

FIG. 8 shows another embodiment of the pad of the present invention, with frame 1
A battery holder 28 for accommodating a battery 29 and a switch for turning on/off the input of battery power are provided at the longitudinal end 31 of the battery 29, forming a circuit as shown in FIG.

Further, at the end portions of the bands 14 and 15, surface fasteners 16, 1- and 19 are formed on opposite sides of each other.

If a battery is built into the pad in this way, it is convenient for use as a flexible band and can be used outdoors.

FIG. 9 shows an improved embodiment in which the pad shown in FIG. 8 is shaped in advance into a bow shape so that it can be easily attached to the abdomen or forehead of the human body.

Next, the usage and operating conditions of the present invention will be described.

With the heat transfer body 8 of the pad of the present invention facing outside, the heat transfer body 9 is brought into contact with the forehead of the human body M, and the planar fasteners 16 and 19 of the bands 14 and 15 are fitted, and the bands 14 and 15 are looped. The pad is attached to the human body M as shown in FIG.

Next, when the contacts of the switch 30 in FIG. 4 are set as shown by the solid line a so that an electromotive force is applied to the electrodes 4 and 5 from a power source such as the battery 29, the current flows from the electrode 4 to the electrode 5. From the current-temperature characteristics shown in FIG. 5, the heat transfer body 8 thermally connected to the electrode 4 generates heat, the heat transfer body 9 thermally connected to the electrode 5 absorbs heat, and the forehead of the human body M It is used to cool down sick people who have a fever.

Next, set the contacts of the switch 30 as shown by the broken line b. Electricity to the electrodes 4 and 5 is cut off.

Furthermore, if the contacts of the switch 30 are set as shown by the broken line C,
Current flows from electrode 5 to electrode 4, heat transfer body 8 absorbs heat, and heat transfer body 9 generates heat.

As described above, the present invention includes a thermoelement formed by sandwiching two types of metal between the inner surfaces of a pair of electrodes to form a closed circuit via the electrodes, and a thermoelement disposed on the outer surface of the electrode to transmit heat from the thermoelement. It is equipped with a flexible heat transfer member, a DC power supply that supplies power to the electrode, and a switch that is connected between the electrode and the DC power supply and switches the polarity of the current supplied to the electrode, so that the current flows. You can heat or cool the human body or objects with just one bat, and it is equipped with a switch that connects between the electrodes of the thermoelement and the DC power source to change the polarity of the current supplied to the electrodes. , one side of the pad can be heated or cooled, making it easy to use as there is no need to turn the pad over when applying hot or cold treatment to the human body, and the pad can be heated or cooled on one side. Since it is flexible, it has the effect of improving heat transfer efficiency to the human body and objects.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the pad of the present invention, FIG. 2 is a plan view of FIG. Figure 5 is a characteristic diagram showing the relative relationship between current and temperature same as above, Figure 6 and Figure 1 are sectional views showing different embodiments of same as above, and Figure 8 shows another embodiment of same as above. FIG. 9 is a perspective view showing another embodiment of the same as above, and FIG. 10 is a perspective view showing an example of use of the pad of the present invention. 1...Thermo element}, 2, 3...
Metal, 4, 5... Electrode, 8, 9... Heat conductor, 14, 15... Band, 16, 17, 1
8, 19... Planar fastener.

Claims (1)

[Claims] 1. A thermoelement consisting of a pair of metals sandwiched between the inner surfaces of a pair of electrodes to form a closed circuit via the electrodes, and a flexible conductor disposed on the outer surface of the electrodes to transmit the heat of the thermoelement. A hot/cold pad comprising: a heating member, a DC power supply for supplying power to the electrodes, and a switch connected between the electrodes and the DC power supply for switching the polarity of the current supplied to the electrodes.