JP2001258924A - Head cooling implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head cooling implement capable of comfortably cooling a head at a predetermined temperature without replacing a coolant such as an ice, or the like, for a long time. SOLUTION: This head cooling implement comprises a cooling bags 1 contacted with a head to pass a cooling water to cool the head, a cooling tank 4 for staying the water, cooling water supply means 2, 3 for supplying the water of the tank to the bags, and cooling water return means 5, 6 for returning the water in the bags to the tank. In this case, since the water is passed to the bags for cooling the head and circulated, the bags for cooling the head can be held at the predetermined temperature and can comfortably cool the head for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head cooling device, and more particularly to a head cooling device used at home or the like in the case of heat generation.

[0002]

2. Description of the Related Art When heat is generated at home or the like, it is common to cool the back of the head or the forehead using a cooling agent frozen in an ice pillow or a freezer. The above-mentioned ice pillow cools the back of the head by putting ice and water in a rubber bag, but if it is used for a long time, the ice melts and the water warms up and stops working as a cooling device. The disadvantage is that it must be fixed. In addition, when the frozen coolant is used as a pillow while lying down,
The stiffness causes discomfort and is commonly used to cool the forehead.

The present invention has been made in view of the above problems, and provides a head cooling device that can comfortably cool a head at a constant temperature without replacing a coolant such as ice for a long time. The purpose is to:

[0004]

Means for Solving the Problems To solve the above problems, a head cooling device according to the present invention comprises a cooling bag through which a head abuts and through which cooling water passes to cool the head. A cooling tank for retaining cooling water, cooling water supply means for supplying the cooling water of the cooling tank to the cooling bag, and cooling water return means for returning the cooling water in the bag-shaped body to the cooling tank. It is characterized by.

According to the present invention, since the cooling water is passed through the cooling sac for cooling the head and the cooling water is circulated, the cooling sac for cooling the head can be maintained at a constant temperature. And there is an advantage that cooling can be performed comfortably for a long time.

[0006]

FIG. 1 shows an example of the structure of a head cooling device according to the present invention, and shows a pillow-shaped head cooling device.
As is clear from this figure, the cooling bag 1 is composed of a plurality of mutually parallel tubular cooling bags 11 and a plurality of cooling water supply bags communicating with one ends of the plurality of tubular cooling bags 11. Cooling water drainage bag 1 communicating with 12 and the other end
And 3. The cooling water supply bag 12 is connected to the cooling tank 4 via a supply pipe 2 and a pump 3 (the supply pipe 2 and the pump 3 constitute cooling water supply means).

On the other hand, the cooling water drainage bag 13 is similarly
And a pump 6 (a drainage pipe 5 and a pump 6 constitute cooling water return means).

[0008] Such a cooling sac 1 can be in the form of a helmet as shown in FIGS. That is,
FIG. 2 is a perspective view of the helmet-shaped cooling bag 1 and FIG.
Is a view showing a combination of the tubular cooling bladders 11, and FIG. 4 is a sectional view. As is clear from FIG. 1, the cooling helmet according to the present invention has a cooling sac 1 having a shape corresponding to the shape applied from the frontal part of the head to the back of the head via the crown. Adjacent to the tubular cooling bladder 11, similar tubular cooling bladders 11 having a shape corresponding to the shape extending from the frontal region to the occipital region via the parietal side are arranged on both sides. The helmet shape is configured by sequentially arranging the tubular cooling bags in this manner.

The helmet-shaped cooling sac 1 has a cooling end communicating with the plurality of tubular cooling sac 11 at the end on the side that fits the occipital region (occipital side), similarly to the pillow-shaped cooling sac described above. A water supply sac 12 is provided, and cooling water is supplied from the supply pipe 2 to the cooling water supply sac 12 from the cooling tank 4 via the supply pipe 2 so that each tubular cooling sac 1 is provided.
1 can be supplied with cooling water. On the other hand, at the end on the forehead side, a cooling water drainage bag 13 which is also in communication with the tubular cooling bag 11 is provided.
The cooling water passing through 1 can be returned to the cooling tank 4 via the drain pipe 5.

The tubular cooling bag 11 has an upper cloth 14 and a lower cloth 15 as shown in a sectional view of FIG. 5, for example, and a three-dimensional woven fabric having a connecting thread 16 for connecting the upper cloth 14 and the lower cloth 15. The end sides of the upper cloth 14 and the lower cloth 15 of the cloth F are sewn to each other to form a tubular body C, and the inner surface and the surface of the connecting thread 16 and optionally the surface of the tubular body C are covered with a polymer layer 17. It has a covered structure.

With such a structure, the connecting yarn 16 (hereinafter referred to as a support S) having the polymer layer 17 formed on the surface thereof is connected to the upper and lower surfaces of the tubular body C (the upper cloth 14 and the lower cloth 1).
Since it is integrated with the polymer layer 17 of 5) and is connected to each other, it is possible to maintain the shape of the tubular cooling bag 11 and to improve the strength (see FIG. 5). .

In the case of the helmet-shaped cooling bag 1, the connecting thread 1
The strut S having the polymer layer 17 formed on the surface of the surface 6 has a structure in which it stands upright in the direction of the center C of the curvature of the curvature as shown in FIG. ing. In this way, by erected straight in the center direction of the curvature of curvature, the tubular body C can favorably maintain the curved shape. As shown in FIG. 6, the planar shape of the tubular cooling sac gradually widens from the end to the center. This forms a curved portion that covers the occipital region rather than the forehead, and each tubular cooling sac 1
This is because when 1 is arranged, no gap is formed between the tubular cooling bags.

As the polymer layer 17, for example, a thermoplastic resin that solidifies by scattering a solvent can be used. For example, it can be formed using a solution of polyvinyl chloride (PVC) in methyl ethyl ketone (MEK) (PVC / MEK). In this case, after injecting the thermoplastic resin solution into the tubular body C and sufficiently attaching the thermoplastic resin solution to the inner surface of the tubular body C and the surface of the connection yarn 16, the excess thermoplastic resin solution is discharged. By dispersing the solvent, the polymer layer 17 can be formed on the inner surface of the hose body H and the surface of the connecting yarn 16.

It is also possible to use a latex for production. In this case, a coagulant solution for coagulating the latex solution is injected into the tubular body C, and the coagulant solution is sufficiently adhered to the inner surface of the tubular body C and the surface of the connecting yarn. Discharge, then
By injecting the latex solution into the inside of the tubular body C, a polymer layer (latex layer) 17 can be formed on the tubular body C and the connecting yarn surface. Such latexes can be essentially any.
For example, natural rubber, chloroprene rubber, SBR and the like can be used. The coagulant may be basically any coagulant capable of coagulating the latex as described above, and typically a polyvalent metal salt such as calcium nitrate can be used.

In this case, a tubular cooling bag can be manufactured using a sol solution of a coagulant. A sol solution containing a coagulant is injected into the above-mentioned tubular body C instead of the coagulant solution, and a gel layer is formed by cooling or the like, an excess sol solution is discharged, and a polymer layer 17 is similarly formed. After that, the gel layer is washed away, so that the flexible polymer layer 17 can be formed. As such a sol solution of the coagulant, for example, a sol solution obtained by adding a coagulant to polyvinyl alcohol can be used.
As a solvent for such a sol solution, for example, carboxymethyl cellulose or the like can be used in addition to the above-mentioned polyvinyl alcohol. Such a solvent is preferably water-soluble. This is because it can be washed away with water in a later step.

It is also possible to produce a tubular cooling bag using a two-part polymer. In this case, one of the polymer forming solutions is injected into the inside of the hose H, and the polymer forming liquid is sufficiently adhered to the inner surface of the tube C and the surface of the connecting yarn. After that, the other polymer forming liquid is then injected into the inside of the tubular body C and cured by heat curing or the like, whereby the polymer layer 17 can be formed on the inner surface of the tubular body C and the surface of the connecting yarn. . Such two-component polymers are not fundamentally limited.
Basically, any polymer can be used as long as it forms a polymer by the reaction of two polymer forming liquids. Typically, a two-component polyurethane formed from diisocyanate and glycol, which are polymer-forming liquids, can be mentioned, and water and cyanoacrylate can also be mentioned.

In this embodiment, the polymer layer 17 formed on the outer surface of the tubular body C is provided on the entire surface of the tubular body C, but need not be provided. When provided, the aforementioned polymer layer can be effectively provided.

The silicone polymer can be used in consideration of thermal efficiency and safety. As is well known, a silicone polymer is a polymer mainly composed of an organopolysiloxane (for example, methylpolysiloxane). This silicone polymer is rubbery or resinous, has high safety to humans, and has high heat conductivity. This has the advantage that the properties are also good.

In the present invention, a general-purpose silicone polymer can be used, but it is particularly preferable to use a heat-dissipating silicone polymer. Examples of such a heat-dissipating silicone polymer include those obtained by adding one or more inorganic heat conductive fillers such as boron nitride, aluminum nitride, and magnesia to organopolysiloxane. The addition amount of the heat conductive filler is preferably 200 to 400 parts by weight based on 100 parts by weight of the silicone polymer. If the amount is less than 200 parts by weight, the improvement in thermal conductivity is small, while if it exceeds 400 parts by weight, it becomes difficult to form a silicone polymer film.

In the present invention, pitch-based carbon fibers can be embedded in the above-mentioned general-purpose silicone polymer layer or heat-dissipating silicone polymer layer. In the pitch-based carbon fiber, graphite single crystals in which carbon atoms are arranged at regular intervals in a regular hexagonal shape in a plane are bonded and elongated in the axial direction of the fiber, while the single crystal in the thickness direction is elongated. It has a structure in which layers are stacked. Only a van der Waals force acts between the single crystal layers, while a strong covalent bond is formed between the single crystals. For this reason, the carbon fiber has a large heat conductivity in the axial direction of the fiber, while the thickness direction has a property of having only a few tenths to a few hundredths of heat conductivity (strength). The same applies to
(See FIG. 7).

FIG. 8 is a view schematically showing the structure of the pitch-based carbon fiber 7. The regular hexagonal graphite single crystal is spread in the axial direction of the pitch-based carbon fiber 7, and heat is dissipated in the axial direction. Conducts well. That is, when heat is input from the end face 71 of the pitch-based carbon fiber 7, the heat is released from the other end face, and the heat dissipation is improved. In the present invention, the axial end face 71 of the carbon fiber is exposed on the surface of the carbon fiber in the thickness direction by grinding the surface of the pitch-based carbon fiber. Since the grinding is not performed uniformly in a microscopic view, the grinding produces an infinite number of end faces 71 on the ground surface (heat absorbing portion (radiating portion) 72). Heat input from the thickness direction is greatly improved. That is, the polymer layer 1
7 allows heat absorption (heat input) and heat dissipation (heat output) from the thickness direction, thereby enabling efficient heat dissipation.

In the present invention, attention is paid to the characteristics of the pitch-based carbon fiber as described above, and the pitch-based carbon fiber is embedded by using the twisted yarn of the carbon fiber, preferably along the longitudinal direction of the tubular body C. It is. The surface of the pitch-based carbon fiber is ground, and heat absorbing portions (radiating portions) 72 are formed on both sides. Therefore, the refrigerant efficiently deprives the head of heat. The tip of the pitch-based carbon fiber 7 is shown in FIG.
As shown in the figure, the cooling water supply bag 12 and the cooling water drain bag 13 are connected to each other. Therefore, the heat transferred in the fiber axis direction of the pitch-based carbon fibers 7 is radiated to the cooling water supply bag 12 and the cooling water drain bag 13.

It is convenient to handle such a carbon fiber in the form of a sheet such as a woven fabric. The above-mentioned pitch-based carbon fiber has a thermal conductivity of 600 to 1600 in the fiber axis direction.
It preferably has W / m · K. 600W / m
If it is less than K, sufficient heat dissipation may not be exhibited, while it is difficult to produce carbon fibers exceeding 1600 W / m · K. The thermal conductivity of carbon fiber is
It has been found that the size of the graphite crystal constituting the carbon fiber is governed only by the size of the carbon fiber, and the larger the graphite crystal is, the larger the size of the graphite crystal becomes. Scattering is reduced and thermal conductivity is increased. As such carbon fibers, for example, pitch-based carbon fibers described in JP-A-07-331536 can be used.

The above-mentioned pitch-based carbon fiber has a thickness of 10 μm.
Before and after such carbon fibers are preferably 1000
Up to 3000 (1K to 3K) pieces are bundled and used as a thread. If it is less than 1K, the strength may be insufficient, while if it exceeds 3K, the flexibility may be impaired.

The above-mentioned silicone polymer layer 17 is preferably provided at least on the surface where the head contacts. Of course, it may be provided on the entire outer surface and inner surface of the tubular body C and on the surface of the connecting yarn, but there is a possibility that the cost may be increased.

The cooling water supply bag 12 and the cooling water drainage bag 13 are connected to the tubular cooling bag 11 as described above. The bladders 11 communicate with each other, and the cooling water supplied to the cooling water supply bladder 12 is a tubular cooling bladder 11.
And reaches the cooling water drainage bag 13.

The cooling water supply bag 12 is connected to the cooling tank 4 via the supply pipe 2. The cooling tank 4 is filled with cooling water cooled by, for example, ice or the like.
Of the cooling water supply bag 12 through the supply pipe 2 by the action of
Is supplied with cooling water. The cooling water supplied to the cooling water supply bag 12 passes through the tubular cooling bag 11 and reaches the cooling water drainage bag 13 as described above, and the cooling water passes through the drainage pipe 5 by the action of the pump 6 and the cooling tank. Returned to 4.

The supply pipe 2 and the drain pipe 5 are preferably provided diagonally as shown in FIGS. The diagonal arrangement in this way makes it possible to make the passage distance of the cooling water passing through each tubular cooling sac 11 almost the same, and to cool the head uniformly.

By placing the head on the cooling bag 1 and lying down, or by putting the helmet-shaped cooling bag 1 on, the head can be cooled for a long time without the need for temperature adjustment.

In the above embodiment, the pump is provided on both the supply side and the drain side, but it is apparent that the same effect can be obtained even if provided on either one.

[0031]

As described above, according to the present invention,
Since the cooling water is passed through the cooling bag that cools the head and the cooling water is circulated, it is possible to maintain the cooling bag that cools the head at a constant temperature, and comfortably for a long time. It has the advantage that it can be cooled.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a head cooling device according to the present invention.

FIG. 2 is a perspective view of an example of a helmet-shaped cooling bag according to the present invention.

FIG. 3 is a partial configuration diagram of the helmet-shaped cooling bag according to the present invention.

FIG. 4 is a cross-sectional view of the helmet-shaped cooling bag according to the present invention.

FIG. 5 is a sectional view of a tubular cooling bag.

FIG. 6 is a sectional view taken along the line AA of FIG. 5;

FIG. 7 is a view showing a crystal structure of a pitch-based carbon fiber.

FIG. 8 is a schematic diagram when the surface of the pitch-based carbon fiber is ground.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling bag 11 Tubular cooling bag 12 Cooling water supply bag 13 Cooling water drainage bag F Three-dimensional woven cloth 14 Upper cloth 15 Lower cloth 16 Connecting thread 17 Polymer layer C Tubular body S Prop 2 Supply pipe 3 Pump 4 Cooling tank 5 Drainage Pipe 6 Pump 7 Pitch-based carbon fiber

Claims (8)

[Claims] 1. A cooling sac that contacts a head and allows cooling water to pass through for cooling the head, a cooling tub that retains the cooling water, and supplies cooling water from the cooling tub to the cooling sac. A head cooling device comprising: cooling water supply means; and cooling water return means for returning cooling water in the bag-shaped body to the cooling tank. 2. The head cooling device according to claim 1, wherein said cooling bag comprises a plurality of tubular cooling bags arranged side by side. 3. The helmet-shaped cooling sac is formed by combining a plurality of tubular cooling sacs having a shape corresponding to a shape from the frontal part to the occipital part of the head and having a hollow portion through which cooling water passes. 3. The head cooling device according to claim 2, wherein the head cooling device is placed on the head. 4. The tubular cooling bag has an upper cloth and a lower cloth, and a three-dimensional woven cloth having a connecting thread for connecting the upper cloth and the lower cloth is formed in a tubular body. 4. The head cooling device according to claim 2, wherein a polymer layer is formed on the surface and the connecting yarn surface. 5. A strut in which the polymer layer is formed on the surface of the connecting yarn, and the strut is provided upright in a center direction of a curvature of a curved portion having a curved shape from a forehead to an occipital region. The head cooling device according to claim 4, wherein 6. The head cooling device according to claim 1, wherein a silicone polymer layer is provided on an outer surface of the cooling bag. 7. The head cooling device according to claim 6, wherein said silicone polymer layer is embedded with pitch-based carbon fibers whose surfaces are ground to form heat absorbing portions. 8. The head cooling device according to claim 7, wherein said pitch-based carbon fiber has an axial thermal conductivity of 600 to 1600 W / m · K.