JPH0513247Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat cushion containing a heat-generating bag.

[Conventional technology]

As shown in Japanese Utility Model Application Publication No. 57-165124, there is known a seat cushion in which a heat-generating bag, that is, a disposable body warmer, is stored in the pocket.

With such seat cushions, by storing the heat-generating bag in your pocket, the heat generated by the heat-generating bag can heat the seat cushion to make it more comfortable to sit on, and it is also cheaper than one that uses an electric heater. Moreover, since there is no need to connect a power cord, it is easy to carry.

[Problem that the invention attempts to solve]

With such seat cushions, the heat generated by the heat generating bag is simply stored in the pocket, so the heat generated by the heat generating bag concentrates on the pocket and cannot uniformly heat the entire surrounding area, and moreover, the heat is radiated to the outside. As the heat generated increases, the loss of heat increases, so it is necessary to store two or more heat-generating bags in a large seat cushion.

In addition, the moisture released from the heat-generating bag is absorbed and accumulated on the sponge, cloth, etc. of the seat cushion, gradually impeding the warming effect.

[Means and actions for solving problems]

A heat-generating bag holding plate, a heat-generating bag, and a water-absorbing sheet that have heat diffusion and heat retention functions are arranged inside the seat cushion body to prevent the heat-generating bag from falling off and to transfer the heat generated by the heat-generating bag to the heat-generating bag holding plate. Heat can be uniformly transmitted to the entire seat cushion, and heat can be prevented from being radiated to the outside, especially toward the bottom part, and moisture released from the heat-generating bag is not absorbed and accumulated inside.

〔Example〕

As shown in FIG. 1, the seat cushion main body 1 has a bag-like shape with a hollow part 5 in which a lower heat-insulating exterior 2 and an upper heat-insulating exterior 3 are separably connected with a connecting device 4 such as a fastener or button. The exteriors 2 and 3 are made of cloth on the outside 2a and 3a, and sponge on the inside 2b and 3b.

A heat generating bag holding material 6 having heat diffusion and heat retention functions, such as a flexible combination of a heat insulating sheet 7 and a heat diffusion plate 8, is provided in the hollow part 5, and an upper space 5a and a lower space 5b are formed. A heat generating bag fixing member, for example a pocket 9, is formed in the upper space 5a.
A heat-generating bag 10 is stored in the pocket 9, and a water-absorbing sheet 11 is provided on the entire inner surface of the upper heat-insulating exterior 3. The water-absorbing sheet 11 is made of fibers having a water-absorbing function or paper impregnated with a moisture-absorbing agent in a lattice shape and a perforated shape. The material of the heat insulating sheet 7 is glass fiber, slag wool, diatomaceous earth, rock wool, silica fiber,
Calcium silicate, pearlite, vermiyukilite, asbestos, clay, rubber, ceramic, etc., and the material of the heat diffusion plate 8 is tin, silver foil, copper, aluminum, alumina, etc., and the heat diffusion plate 8 and the heat insulation sheet 7 It goes without saying that it should be thick enough so that when it is stored in a seat cushion, it will not feel bad from the outside when in use, and it should also maintain flexibility.

Because of this, the heat generated by the heat generating bag 10 is transmitted to the heat diffusion plate 8 and diffused throughout the seat cushion, and the heat insulating sheet 7 can prevent heat loss downward. Furthermore, since the heat diffusion plate 8 is curved, an air layer exists between the heat generation bag 10 and the heat diffusion plate 8, so that the oxidative exothermic reaction continues smoothly within the heat generation bag 10.

FIG. 2 shows a second embodiment, in which a heat insulating sheet 7 and a heat diffusion plate 8 are installed vertically apart from each other, a pocket 9 is provided between them, and a water absorbent sheet 11 is partially provided. There is.

FIG. 3 shows a third embodiment, in which a water-absorbing sheet 11 and a heat-generating bag fixing member, such as double-sided tape 12, are provided on a part of the inner surface of the upper heat-insulating exterior 3, and the heat-generating bag 10 is attached to this double-sided tape 12. It is designed to be installed.

In Figure 4, the ends of the heat insulating sheet 7 and the heat diffusion plate 8 are bent inward so that the end faces 7a and 8a do not extend outward, and it is safe because the end faces 7a and 8a do not extend outward. .

In addition, although the heat insulating sheet 7 and the heat diffusion plate 8 are formed into a corrugated shape, the heat insulating sheet 7 may be formed into a flat form as shown in FIG. 5, and the heat diffusion plate 8 may be formed into a wave form. 13, the heat diffusion plate 8, and the substrate 1.
The heat insulating sheet 7 may be attached in a corrugated manner to 3'. In this case, it goes without saying that the substrate 13 should be made of a material with good thermal conductivity, and the substrate 13' should be made of a heat insulating material.

Moreover, the purpose was achieved by replacing the heat generating bag 10 and the water absorbent sheet 11 as appropriate.

Next, an experimental example will be explained.

Experimental Example 1 The seat cushion shown in Figure 1 was made under the following conditions,
A first temperature sensor was placed in the center of the inner surface of the waterproof sheet 11 in contact with the heat-generating bag 10, and second and third temperature sensors were placed on both sides of the inner surface of the waterproof sheet 11, and the temperature was measured over time. We obtained the results shown below. That is, about 20 minutes after use, there is a slight temperature difference of about 7° C., but an equilibrium state is maintained for a certain period of time.

(Conditions) The outer parts 2a and 3a of the upper and upper heat insulation exteriors 2 and 3 are made of nylon cloth with a thickness of 3 mm, and the inner parts 2 b and 3b are made of polyurethane and are made of sponge with a thickness of 10 mm.

Heat generation bag 10 is a chemical warmer with 60g of content.

The heat insulating sheet 7 is made of asbestos fibers containing a small amount of adhesive and is formed into a corrugated shape with a certain degree of elasticity and dried to a thickness of 4.9 mm.

The heat diffusion plate 8 is made of aluminum foil with a thickness of 0.1 mm.
It was attached to the heat insulating sheet 7 with an adhesive.

The water absorbent sheet 11 is made by kneading calcium chloride powder, high molecular weight polymer, and pipe with water and drying the mixture.
It is an elastic plate-like object with a thickness of 3 mm.

As a comparative example, under the same conditions as above, a heat-generating bag 1 was placed inside a seat cushion consisting of only the upper and lower heat-insulating exteriors 2 and 3.
The first, second,
When a third temperature sensor was installed and the temperature was measured over time, the results shown in FIG. 8 were obtained.

In other words, after about 40 minutes have elapsed after use, there is a constant temperature difference of about 34°C, but an equilibrium state is maintained for about 16 hours.

This proves that by providing the heat insulating sheet 7, the heat diffusion plate 8, and the water absorbent sheet 11, heat is efficiently transferred throughout the seat cushion.

Experimental Example 2 The heat-generating bag 10 was placed in a sitting cushion under the same conditions as in Experimental Example 1, and the humidity of the inner side 3b made of sponge was measured with a humidity sensor after the reaction of the heat-generating bag 10 was completed, and the results shown in FIG. 9 were obtained. .

As a comparative example, the humidity of the inner side 3a made of sponge of a seat cushion made of only the upper and lower heat insulation outer coverings 2 and 3 was measured in the same manner as described above, and the results shown in FIG. 10 were obtained.

This revealed that by providing the water-absorbent sheet 11, it is possible to absorb moisture generated when the heat-generating bag 10 generates heat, thereby preventing the internal humidity from increasing.

[Effect of idea]

Since the heat generating bag 10 is disposed inside the seat cushion body 1, it will not fall off when being carried.

Since the heat generating bag holder 6 which has heat diffusion and heat retention functions is provided, the heat generated by the heat generating bag 10 is uniformly transferred to the entire surrounding area, and the heat does not directly escape to the outside, reducing heat loss. By arranging one heat-generating bag even in a large seat cushion, it is possible to uniformly heat the entire seat and maintain a predetermined temperature for a long period of time.

Since the water absorbent sheet 11 is provided, the heat generating bag 1
It absorbs moisture that comes out from the air and keeps the interior dry at all times.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIGS.
3 are cross-sectional views of different embodiments, FIGS. 4, 5, and 6 are explanatory diagrams of different embodiments of the heat-generating bag holding material, and FIGS. Tables 9 and 10 are humidity tables. 1 is a seat cushion body, 6 is a heat generating bag holding material, 7 is a heat insulating sheet, 8 is a heat insulating board, 10 is a heat generating bag, and 11 is a water absorbing sheet.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A heat-generating bag storage seat cushion in which a heat-generating bag holding material 6, a heat-generating bag 10, and a water-absorbing sheet 11 having heat diffusion and heat retention functions are arranged in a seat cushion body 1. 2. The heat-generating bag storage seat cushion according to claim 1, wherein the heat-generating bag holding material 6 is a flexible combination of a heat diffusion plate 8 and a heat insulating sheet 7. 3. The heat-generating bag storage seat cushion according to claim 1, wherein the water-absorbing sheet 11 is made of fibers having a water-absorbing function or paper impregnated with a moisture-absorbing agent in a lattice shape.