JPS5818097B2 - heating pad - Google Patents

Description

[Detailed description of the invention] This invention relates to a heating pad.

By covering the affected part of the body and warming it, it causes a vascular reflex, which can cause symptoms such as cervicobrachial syndrome, frozen shoulder, whiplash, neuralgia, etc.
It can treat pain and stiffness in muscles, joints, and nerves caused by rheumatism, osteoarthritis, etc., but commonly used heating pads are made of silicate gel (silica gel) and cotton. When placed in a bag and soaked in boiling water, it absorbs the water and becomes a heat storage medium.

Generally, put the pack in a bucket or basin with water,
Soak the pack in water for a day to absorb water, then use gas,
Heat the water using electricity or other methods, and once the water boils, lower the heat and wait 20 minutes, then turn off the heat.

Lay a towel on top of the waterproof cloth, remove the pack, drain well and place on it.Fold a thick bath towel in four and place two on top of your throat, then place the side of the towel on the affected area to be treated.

However, this heating pad has disadvantages in that it takes time and effort to drain the pack when storing it, and the pack is heavy.

Therefore, it is an object of the present invention to provide a heating pad that can overcome these drawbacks.

A first embodiment of the invention is shown in FIGS. 1 and 2.

In other words, this heating pad has a slit 1 in the center of the plate.
A water-permeable bag 2 having a shape of 100 ml of water stored therein is filled with thermal particles 3.

The heat storage particles 3 are made by encasing a substance with a large latent heat of fusion (melting point: 50°C to 80°C), such as paraffin, in an outer shell of a metal material or a synthetic resin material such as epoxy resin, as shown in Fig. 3 or 4. It is an encapsulated wax microcapsule body (a microcapsule of several ml rt from nanocapsule 10-10 mm).

In FIG. 4, 4 is an inner shell that contains air.

This heating pad stores heat by being immersed in heated water.

In this case, the heated water enters through the micropores of the water-permeable bag 2 and lands on the heat storage particles 3, efficiently heating the paraffin to a temperature higher than its melting point and storing heat.

Furthermore, due to the heat storage particles 3, a highly flexible heating pad can be obtained regardless of temperature changes within the water-permeable bag 2.

Furthermore, the wax microcapsule body does not absorb this 7, so it is easy to drain water during storage, and even if the heat storage particles 3 expand due to heat, the wax will leak out of the outer covering of the heating pad due to the capsule, leading to burns. There is little risk.

A second embodiment of the invention is shown in FIG.

In other words, this heating pad has heat storage particles 3 kneaded in heat dissipating grease 6 having good thermal conductivity and enclosed in a vinyl cover 5 made of heat-resistant vinyl.

In this case, the vinyl cover 5 is sealed, but since the heat storage particles 3 are coated in the heat dissipation grease 6, heat conduction is good, and the heat storage particles 3 can be efficiently heated above their melting point when immersed in warm water.

Other effects are similar to those of the first embodiment.

In addition, heat storage particles may be contained in a soft synthetic resin such as rubber.

As described above, since the heating pad of the present invention has the main body of the pad composed of heat storage particles, it has the advantage of good storage stability and ease of use due to its flexibility.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a heating pad according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the heating pad along the line ■-■, FIG. 3 is a cross-sectional view of heat storage particles, and FIG. A cross-sectional view showing an example,
FIG. 5 is a sectional view of a heating pad in a second embodiment. 2... Water permeable bag (mainly pad), 3...
- Heat storage particles, 5... Vinyl cover (bag body).

Claims (1)

[Claims] 1. A heating pad comprising heat storage particles in which a substance with a large latent heat of fusion, such as paraffin, is encapsulated in microcapsules, and a pad main body containing a large number of these heat storage particles. 2. The heating pad according to claim 1, wherein the main body of the pad is a water-permeable bag, and the heat storage particles are filled in the bag. The main body of the pad is a bag made of synthetic resin, and the inside of the bag is The heating pad according to claim 1, wherein the heating pad is filled with the heat storage particles and the winter wreath with good thermal conductivity.