JP2013154181A - Body cooler-warmer using peltier element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body cooler-warmer using Peltier elements for raising/lowering temperature of blood.SOLUTION: A body cooler-warmer using Peltier elements 11, 11' includes: a pair of abutting faces 111, 111'; circulation parts 112, 112' for circulating water or a coolant; a heat exchange part for cooling or heating the water or the coolant; and a power source part 13 for supplying electric power to the pair of Peltier elements 11, 11'. The pair of abutting faces 111, 111' are partially a cooling face (heating face) with high thermal conductivity composed of the Peltier elements 11, 11', and made to abut on the skin around more than a half of the neck. The pair of abutting parts 111, 111' are provided with the circulation parts 112, 112' on the heating faces (cooling faces) of the Peltier elements 11, 11' on the opposite side of the face to be abutted on the surface of the neck. The water or the coolant is cooled or heated by the heat exchange part during circulation.

Description

  The present invention relates to a body cooling / heating device for cooling / heating a body using a Peltier element. In particular, the body cooling / heating device of the present invention is a Peltier element that lowers (increases) the temperature of blood by applying a contact surface to the skin (for example, around the neck) in the vicinity of a thick blood vessel that passes close to the body surface. The present invention relates to a body air-conditioning / heating device using a hood. The present invention relates to a small body cooling / heating device convenient for carrying.

  The air-conditioning clothes using a Peltier device are described in Unexamined-Japanese-Patent No. 2004-263325, for example. A clothing temperature variable unit and a temperature variable clothing including the unit are described in, for example, Japanese Patent Application Laid-Open No. 2008-031581. The conventional air-conditioning clothing has a problem that it is difficult to bring the cooling surface (heat generation surface) of the Peltier element into close contact with the body, and effective air-conditioning cannot be performed.

  In addition, the air-conditioning clothing is not directly applied to the skin, and there is a problem that energy efficiency is poor when the underwear is used. Moreover, even if the Peltier device can be brought into close contact with the body, the air-conditioning clothing does not have thick blood vessels in the back or abdomen, and only partially lowers (increases) the skin surface temperature. It was difficult to control body temperature in a short time.

  The entire circumference of the neck can instantly obtain a cool feeling without impairing the function of cooling the vicinity of a thick blood vessel. It is said that there is a switch of the arteriovenous anastomosis blood vessel (AVA) that controls the body temperature on the back side of the neck (see trivia reader NHK for Gatten 7 “I found a switch that promotes cold circulation”). Heating and cooling the back of the neck can open and close the arteriovenous anastomosis (AVA) and enhance the cooling and heating effect by blood circulation.

  The body cooling / heating device has to be provided with a reserve tank to separate and expel cooling water and air in the coolant. FIG. 13 is a diagram for explaining a conventional reserve tank. For example, as shown in FIG. 13, the reserve tank 151 includes a casing provided with a plug 152, an inlet 153, and an outlet 154. The reserve tank 151 collides with a plate 156 in which cooling water or coolant that has entered from the inlet 153 is provided, and the internal air 155 floats upward, so that the air is supplied from the outlet 154 as shown by the flow path 157. It comes out as cooling water or coolant that does not mix.

JP 2004-263325 A JP 2008-031581 A

  Since the body cooling / heating device is carried around the body, it is important that the weight is light. As the thickness of the heat conductive metal sheet increases, heat conduction improves. However, when the thickness exceeds 0.3 mm, the heat conductive metal sheet lacks flexibility and needs to be shaped according to the shape of the neck. However, there is a drawback that the cross-sectional shape of the neck varies from person to person and requires customization. A graphite sheet is known as a material having flexibility and good thermal conductivity. The graphite sheet is brittle and easily peeled off, and in particular has a low mechanical strength in the thickness direction.

  Further, since the graphite sheet is brittle and easily peeled off, there is a problem that when it is structured to be bonded to a Peltier element, the mechanical bonding strength is insufficient and the inside breaks. Further, the graphite sheet needs to be in close contact with the heat conductive metal sheet, but there is a problem that an air layer exists due to the concavo-convex portion and the heat conductivity is deteriorated.

  The circulating part for circulating the cooling water or the coolant needs a reserve tank for replenishing the evaporated part. The reserve tank needs to exclude bubbles contained in the replenished cooling water or coolant. The reserve tank required a screw-in type cap for replenishing the cooling water or coolant. Further, the reserve tank needs to prevent leakage of the cooling water or coolant. Furthermore, since the reserve tank is large and bulky, it cannot be attached to the body as a body cooling / heating device.

  When bubbles enter the reserve tank, the flow velocity is faster than the buoyancy of the bubbles, and there is a problem that the bubbles enter the pump side with the flow velocity. In order to prevent the above problem, the conventional reserve tank is provided with a shielding plate (for example, reference numeral 157 in FIG. 13) for blocking bubbles near the outlet. However, the shielding plate has a limited effect, and a large casing is necessary to completely kill the flow velocity and meander.

  In order to solve the above-described problems, the present invention applies blood to a skin surface of a thick blood vessel that passes through a place close to the body surface by a contact surface having a cooling surface (heating surface) of the Peltier element. An object of the present invention is to provide a body cooling / heating device using a Peltier element that actively cools and efficiently cools (generates heat) the entire body. In addition to simple air-conditioning systems, the present invention is intended to quickly increase body temperature when it is desired to lower the body temperature quickly, such as heat stroke, or when the body temperature drastically decreases due to drowning or is likely to cause frostbite in winter mountains. It is an object of the present invention to provide a body cooling / heating device using a Peltier element that is convenient for other medical needs.

  An object of the present invention is to provide a body cooling / heating device having a flexible cooling surface that is thin and easy to fit around the neck by combining a graphite sheet with excellent thermal conductivity and a metal sheet. To do. An object of the present invention is to provide a body cooling / heating device that is provided with a valve mechanism for preventing leakage and that can easily eliminate cooling water or bubbles in the coolant and that is small and convenient to carry.

  A body cooling / heating device uses a Peltier element, and is a cooling surface with good thermal conductivity (heating surface) at least partly composed of a Peltier element that abuts the skin in the vicinity of a thick blood vessel that passes close to the body surface. ) And a heat generating surface (cooling surface) of the pair of Peltier elements, a circulating portion for circulating water or coolant, and heat for cooling or heating the water or coolant supplied to the circulating portion It is comprised at least from the exchange part and the power supply part which supplies electric power to the said Peltier device.

  The body cooling / heating device is characterized in that the surface temperature of the contact surface is set to 5 ° C. to 25 ° C. during cooling.

  The body cooling / heating device is characterized in that the contact surface is attached by an adhesive tape.

  The body cooling / heating device is characterized in that at least a circulating portion for circulating water or coolant is constituted by an elastic pipe.

  The body cooling / heating device is characterized in that the cooling surface (heating surface) or contact surface of the Peltier element is rectangular, elliptical, or oval having a parabola.

  The body cooling and heating apparatus uses a Peltier element, a metal sheet that abuts at least a half circumference of the skin around the neck, a pair of Peltier elements provided near both ends of the metal sheet, and the pair of A circulation part that circulates cooling water or coolant on the heat generation surface (cooling surface) of the Peltier element, a heat exchange part that cools or heats the cooling water or coolant supplied to the circulation part, and supplies power to the Peltier element And at least a power supply unit.

  In the body cooling / heating apparatus, the Peltier element is integrated with a heat conductive metal sheet and a graphite sheet.

  In the body cooling / heating apparatus, the graphite sheet is sandwiched and joined between a Peltier element and the thermally conductive metal sheet, and is firmly joined by a water cooling jacket and a thermally conductive metal sheet on the outer side. To do.

  In the body cooling / heating device, the graphite sheet and the thermally conductive metal sheet are characterized in that a viscous body having good thermal conductivity is enclosed outside a range where the Peltier element contacts.

  The body cooling / heating device can replenish cooling water or coolant to the heat exchanging part, and can be pumped to an external tank, a first valve mechanism installed at a lower portion of the external tank, and the first valve mechanism. A reserve tank having a second valve mechanism to be coupled and air in the reserve tank are moved to the external tank by pumping the external tank.

  In the body cooling and heating apparatus, the reserve tank has a mesh finer than bubbles inside.

  In the body cooling and heating apparatus, the Peltier element is composed of a metal fin having a U-shaped cross section disposed on the heat generating surface, and a resin water cooling jacket covering the metal fin and the heat generating surface. To do.

  According to the present invention, the contact surface in the body cooling / heating device directly contacts or is attached to the skin in the vicinity of a thick blood vessel passing through a place close to the body surface, so that an efficient cooling / heating device can be achieved with less energy. it can.

  According to the present invention, since the body temperature can be raised or lowered via blood by directly contacting or wearing the skin in the vicinity of a thick blood vessel passing through a place close to the body surface, the body temperature can be increased or decreased. Can improve body temperature in emergencies such as illness.

  According to the present invention, the circulation section, the heat exchange section, and the power supply section for circulating water or coolant can be made compact, which is convenient for carrying.

  According to the present invention, the circulation portion is made of a synthetic resin pipe so as to have elasticity, and the contact surface can be easily attached to a necessary part of the body.

  According to the present invention, in order to effectively cool (heat) the blood flowing through a thick blood vessel in the body, a rectangular shape that allows the contact surface such as the cooling surface of the Peltier element or the heat transfer plate to be as close to the blood vessel as possible. Oval, oval with parabola.

  According to the present invention, since the temperature of the entire circumference of the neck can be controlled at the same time as cooling and heating the carotid artery portion, the cooling of the blood (heating) and the cool feeling around the neck during cooling, or the movement during heating The function of dilating the venous anastomosis (AVA) is obtained.

  According to the present invention, since the heat conductive metal sheet for heat conduction and the graphite sheet are used in combination, even if the heat conductive metal sheet is thin, high heat conduction efficiency can be obtained. Compared with this product, it can be processed into a shape that is thinner, flexible, and easily fits the cross-sectional shape of the neck, and can improve thermal efficiency.

  According to the present invention, the bonding between the thermally conductive metal sheet and the graphite sheet and the bonding between the graphite sheet and the Peltier element are performed using an adhesive having extremely high thermal conductivity, and the Peltier element is formed outside the graphite sheet. By bonding the heat conductive metal sheet and the heat conductive metal sheet mechanically with an epoxy resin adhesive having excellent strength, a high bonding strength can be obtained without impairing the heat conductivity.

  According to the present invention, the heat conductive metal is encapsulated between the heat conductive metal sheet and the graphite sheet at a portion other than the joint portion between the heat conductive metal sheet, the graphite sheet, and the Peltier element. The air between the sheet and the graphite sheet can be expelled, and excellent thermal conductivity is obtained.

  According to the present invention, a valve mechanism having a leakage prevention mechanism is attached to the reserve tank and the external tank, and the air can be surely vented in a short time by a pumping operation that grips and releases the flexible external tank. it can.

  According to the present invention, air bubbles can be caught by providing a finer mesh than the air bubbles provided in the reserve tank coupled to the external tank via a valve mechanism, while enabling pumping with the external tank. .

BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual perspective view for demonstrating a body air-conditioning apparatus which is 1st Example of this invention. Example 1 It is a perspective view for demonstrating the part which comprises one contact surface in 1st Example of this invention. It is a 1st example of the present invention, and is a figure for explaining a power circuit for a Peltier device, a pump, and a fan. In 2nd Example of this invention, it is a figure for demonstrating the example which attached the heat sink which is a heat exchange part to the back part of clothes. (Example 2) It is a figure for demonstrating 3rd Example of this invention. (Example 3) It is a figure for explaining the example which is the 4th example of the present invention and provided the Peltier device and the heat exchange part on the metal sheet. Example 4 It is a figure for explaining the example which is the 5th example of the present invention and provided the Peltier device and the heat exchanging part via the graphite sheet on the heat conductive metal sheet. (Example 5) It is a figure for demonstrating the state which attached | subjected the body air conditioning apparatus of this invention to the body actually. (A) is a figure for demonstrating the state which the external tank and the reserve tank which are 6th Example of this invention couple | bonded, (b) is for demonstrating the state which the external tank and the reserve tank isolate | separated FIG. (Example 6) It is a 7th Example of the present invention, and is a figure for explaining an example of a water cooling jacket. (Example 7) It is another example of 7th Example of this invention, and is a figure for demonstrating a water cooling jacket. It is sectional drawing for demonstrating the water-cooling jacket vicinity in 7th Example of this invention. It is a figure for demonstrating the reserve tank of a prior art example.

  The body cooling and heating apparatus using a Peltier element includes a pair of contact surfaces, a circulation part for circulating cooling water or coolant, a heat exchange part for cooling or heating the cooling water or coolant, and power to the pair of Peltier elements. And at least a power supply unit for supplying power. The pair of contact surfaces are cooling surfaces (heat generation surfaces) having good thermal conductivity, at least part of which is composed of Peltier elements. Further, the pair of contact surfaces are in contact with the skin in the vicinity of a thick blood vessel that passes near the body surface.

  Thick blood vessels that pass close to the body surface include, for example, the carotid artery, the subclavian vein blood vessel, the subclavian artery blood vessel, and other arteries or veins in the arm, the crotch, and the like. The pair of abutting portions is provided with a circulation portion for circulating cooling water or coolant on the heat generating surface (cooling surface) of the Peltier element on the opposite side of the surface abutting on the body surface. The cooling water or coolant is cooled or warmed by the heat exchange unit during circulation. In addition, the power supply unit supplies power to exert a Peltier effect in the Peltier element.

  The pair of abutting surfaces include a Peltier element as a whole, a structure in which a heat conductive metal sheet is laid on the entire surface of the Peltier element, and a structure composed of the Peltier element and a heat conductive metal sheet. .

  The body air conditioner can set the surface temperature of the Peltier element to 5 to 25 ° C. during cooling. In the body cooling / heating device, the supply of electric power to the Peltier element, the circulation of cooling water or coolant in the circulation section, and the control of the heat exchange section that is cooled or heated are appropriately performed by a microcomputer or the like in the control apparatus.

  A pair of Peltier elements comprised of a cooling surface (heat generation surface) with good thermal conductivity in the body cooling / heating device is attached to a desired body surface by an adhesive tape. Since the pair of Peltier elements is a body cooling / heating device, the pair of Peltier elements can be easily attached to a part of the body with a commonly used inexpensive adhesive tape.

  In the body cooling / heating apparatus, the cooling water or the coolant includes a circulation unit that circulates from one Peltier element to the other Peltier element. The circulating portion connects a pair of Peltier elements by a synthetic resin pipe that circulates the cooling water or coolant. The pipe for circulating the cooling water or the coolant can be easily attached to the body by giving elasticity. In other words, the pipe can be attached in close contact with the body while circulating the cooling water or the coolant. In addition, the circulating portion can also tie an elastic band member and a pipe for circulating cooling water or coolant.

  The body cooling / heating device can be worn along a thick blood vessel by making the cooling surface (heating surface) or contact surface of the Peltier element rectangular, oblong, or oblong with a parabola. Can cool or heat rapidly. Also, it is convenient to make the rectangle or ellipse as long as possible so that it can be mounted along the blood vessel.

  The body cooling and heating apparatus is composed of a heat conductive metal sheet, a Peltier element, a circulation part, a heat exchange part, and a power supply part. The thermally conductive metal sheet has a shape that can contact at least half of the skin around the neck. The Peltier element is provided with a pair in the vicinity of both end portions of the thermally conductive metal sheet. That is, the heat conductive metal sheet is configured to transmit heat of the heat generating surface (cooling surface) by the Peltier element to the whole. For example, copper or aluminum is suitable for the thermally conductive metal sheet, and is produced by sheet metal processing or extrusion processing.

  The heat exchange unit circulates cooling water or coolant to the heat generating surfaces (cooling surfaces) of the pair of Peltier elements via, for example, a resin flexible pipe. The heat exchange unit performs heat exchange by cooling or heating cooling water or coolant supplied to the circulation unit attached to a part of the body away from the neck. The power supply unit supplies power to the Peltier element and controls circulation of the cooling water or coolant.

  In the body cooling / heating apparatus, the Peltier element is integrally formed of a heat conductive metal sheet and a graphite sheet. Since the graphite sheet has good thermal conductivity, even if the thermal conductive metal sheet is thin and flexible, the graphite sheet has good thermal conductivity and is manufactured to fit the shape of the neck.

  In the body cooling and heating apparatus, the graphite sheet has a structure sandwiched between a Peltier element and the thermally conductive metal sheet. The graphite sheet has a weak mechanical strength in the thickness direction, and has a drawback of being easily peeled off in layers like mica. Moreover, even if the graphite sheet is simply firmly bonded only to the surface, the graphite sheet is broken when an external force is applied. The structure of the present invention can have sufficient mechanical strength by firmly bonding the water cooling jacket and the heat conductive metal sheet with an epoxy adhesive or the like.

  In the body air conditioner, a surface that contacts the Peltier element uses a heat conductive adhesive (silver paste or the like) having a very high heat conductivity. However, adhesives with extremely high thermal conductivity are highly viscous and difficult to apply thinly and uniformly. Therefore, in a place other than in contact with the Peltier element, between the graphite sheet and the thermally conductive metal sheet, a viscous body having a moderate thermal conductivity (thermal conductivity of about 1 W / mK), for example, thermal conduction Enclose grease and unite.

  When the graphite sheet and the metal sheet are wound along the neck, a difference in distance occurs between the inside and the outside. The thermal conductive grease absorbs a difference in winding distance and has a slip that prevents wrinkles, and can expel an air layer in an uneven portion of the graphite sheet. Moreover, the said heat conductive good viscous body can also enclose a heat conductive paste, for example. Although the heat conductive paste is a creamy viscous body at the time of application, it does not harden into rubber and leaks over time, and a state close to ideal surface contact can be obtained.

  In the body cooling / heating device, the heat exchange unit includes a reserve tank and an external tank that can be connected to the reserve tank. The external tank has a thin structure so that cooling water or coolant can be replenished to the heat exchanging portion and pumping is possible. The external tank is provided with a first valve mechanism at the bottom. The reserve tank includes a second valve mechanism coupled via the first valve mechanism. The external tank can move the air inside the reserve tank to the external tank through the pumping action by clamping or releasing and the first valve mechanism and the second valve mechanism.

  In the body cooling / heating device, the reserve tank is provided with a finer mesh than bubbles. Since the mesh is finer than air bubbles, the air bubbles can be kept inside the reserve tank to prevent the air bubbles from being sucked into the pump.

  In the body cooling / heating device, the Peltier element includes a metal fin and a resin water cooling jacket. A plurality of metal fins having a U-shaped cross section are arranged on the heat generating surface. Moreover, the said metal fins shall be made into the wave shape instead of the said U shape. The resin water cooling jacket has a structure covering the metal fin and the heat generating surface. Cooling water or coolant enters from one side of the resin water cooling jacket, passes through a plurality of metal fins having a U-shaped cross section, and exits from the other side.

  The metal fin can be easily made of copper or aluminum by bending or extruding a sheet metal. Further, the metal fin can be fixed by a heat conductive adhesive, soldering, or silver paste. The resin water-cooled jacket can be lightened by hollowing out the interior by machining to provide a cooling water channel. Further, the resin water-cooled jacket can be adhered to the Peltier element with a rubber-based adhesive to prevent water leakage at the same time.

<Example 1>
FIG. 1 is a conceptual perspective view for explaining a body cooling / heating device according to a first embodiment of the present invention. In FIG. 1, the body cooling / heating device includes a pair of Peltier elements 11, 11 ', a pair of contact surfaces 111, 111' integrated with the Peltier elements 11, 11 ', and circulation for circulating water or coolant. At least from the parts 112, 112 ', 113, the heat exchange parts 12, 121, 14, 15 for cooling or heating the water or coolant, and the power supply part 13 for supplying power to the pair of Peltier elements 11, 11' It is configured. The body air-conditioning apparatus has a compact configuration and is convenient to carry.

  The pair of contact surfaces 111 and 111 'are at least partially or entirely made of Peltier elements 11 and 11', and part or all of the Peltier elements 11 and 11 'are configured as heat transfer plates. It is a cooling surface (heat generation surface) with good thermal conductivity. The pair of contact surfaces 111 and 111 'are blood vessels close to the body surface, for example, carotid artery, subclavian vein blood vessel, subclavian artery blood vessel, and other arteries and / or veins in arms, thighs, etc. Is in contact with the vicinity.

  The pair of abutting portions 111, 111 ′ are circulating portions 112, 112 ′, for circulating water or coolant to the heat generating surface (cooling surface) of the Peltier elements 11, 11 ′ on the opposite side of the surface abutting on the body surface. 113 is provided. During the circulation, the water or coolant is cooled by a heat exchange unit, for example, the radiator 12, the fin 121 of the radiator 12, the pump 14, and the fan 15. The power supply unit 13 is composed of a rechargeable storage battery that supplies electric power to the Peltier elements 11 and 11 ′ by wire harnesses 131 and 132 in order to exert the Peltier effect.

  FIGS. 2 (a) to 2 (c) are perspective views for explaining a heat transfer plate constituting one contact surface in the first embodiment of the present invention. 2 (a) to 2 (c), the contact surfaces 111, 111-1 (b) and 111-2 (c) are formed, for example, at least by a Peltier element 11 on the cooling surface, and on the opposite heating surface. A circulation part 112 for circulating water or coolant is provided. The Peltier element 11 is supplied with power through the power supply unit 13 and the wire harnesses 131 and 131 ′. Furthermore, the contact surface 111 can be made to have a desired size and shape by using only the Peltier element 11 or by tying the Peltier element 11 and a heat transfer plate having good thermal conductivity.

  The heat transfer plate 111-1 shown in FIG. 2 (b) has an elongated oval shape, and can be attached or attached with an adhesive tape along the blood vessel. The heat transfer plate 111-2 shown in FIG. 2 (C) has a circular shape having a parabola, and can be attached or attached with an adhesive tape along the blood vessel. The heat transfer plates shown in FIGS. 2A to 2C are thinner than those shown in the figure, and can be made thicker depending on the width of the blood vessel. The heat transfer plate is also made of an elastic metal plate, stored in advance so as to be bent, and can be fitted to a desired portion.

  FIG. 3 is a diagram for explaining a power supply circuit for a Peltier element, a pump, and a fan according to the first embodiment of the present invention. In FIG. 3, the power supply unit 13 is a DC power supply made of a rechargeable storage battery. For example, the Peltier elements 11-1, 11-2, 11-3,..., 11 -n, the pump 14, the fan 15, The switches 133 are connected in series or in parallel via a control circuit (not shown).

  The body cooling / heating device is effective in cooling the body by setting the surface temperature of the Peltier element to, for example, 5 ° C. to 25 ° C. during cooling. In the body cooling / heating device, the supply of electric power to the Peltier element, the circulation of water or coolant in the circulation unit, and the control of the heat exchange unit that is cooled or heated are appropriately performed by a control device such as a microcomputer (not shown).

  The body cooling / heating device can attach the contact surface to a desired part of the body with an adhesive tape. The said adhesive tape can be easily attached to a part of the body by what is normally used for medical use.

  In the body cooling / heating device, the abutment surfaces are connected, and at the same time, the pipe for circulating water or coolant has elasticity. The pipe is made of an elastic plastic and can be easily attached to the body. The water or coolant is circulated by the pump 14 and exchanges heat with the radiator 12 to radiate heat to the atmosphere. The cooling water may be tap water or a coolant such as propylene glycol.

  The contact surfaces 111 and 111 'having the cooling surface of the Peltier element are pressed directly against a desired part of the body by an elastic pipe 113 having a structure like a headphone, for example. The abutment surfaces 111 and 111 'where the thick blood vessels at the bottom of the clavicle, the armpit, and the base of the foot are attached to the part close to the body surface are affixed with medical adhesive tape, etc. Become. When the skin surface temperature decreases, the inside of the skin also becomes cooler than the normal body temperature.

  Since the blood flowing inside the thick blood vessel is around 37 ° C., which is equal to the deep body temperature, heat exchange is performed between the blood inside the skin and the blood at a low temperature. Since the blood cooled by the body cooling / heating device travels around the whole body in a few seconds, the same effect as cooling the whole body can be expected. Note that the Peltier element can be used not only for cooling but also for heating because the cooling surface and the heating surface are interchanged when the direction of current flow is reversed.

<Example 2>
FIG. 4 is a view for explaining an example in which a heat radiating plate, which is a heat exchanging portion, is attached to the back portion of clothes in the second embodiment of the present invention. In FIG. 4, the body air conditioning apparatus of 2nd Example has the Peltier element 11 provided in the vicinity of the carotid artery. The pair of contact surfaces 111 and 111 '(not shown) are mounted together with a circulation part 31 for circulating water or coolant. The circulation part 31 is attached to the heat radiating plate 122 while being wrapped around the neck by an elastic pipe or the like.

  The heat radiating plate 122 is disposed so as to increase the heat exchange efficiency of the pipe, and is provided with a pump 14 that can supply the water or coolant. The body cooling / heating device performs heat exchange by attaching a heat radiating plate 122 to clothes.

<Example 3>
FIG. 5 is a diagram for explaining a third embodiment of the present invention. In FIG. 5, the body cooling and heating apparatus of the third embodiment is provided with the circulation sections 31 and 31 'in the second embodiment. By attaching one Peltier element 11 of the circulation sections 31 and 31 'in the vicinity of the carotid artery and the other Peltier element 11' in the vicinity of the subclavian artery (venous) blood vessel, the body temperature can be more rapidly increased. Can be lowered (raised). In addition, the circulation part 31 is provided with a spring pipe and a heat exchange part. Further, the circulating portion 31 'has the Peltier element 11' attached to the skin with a medical adhesive tape or the like. The heat exchange part is provided together with the circulation part provided on the back side or the rear part of the neck.

  Moreover, the circulation part and heat exchange part in FIG. 4 and FIG. 5 can be made into the structure which increases the contact area with the skin along the vicinity of the blood vessel. In addition, when the skin surface is strongly cooled by a pin point, the contact surface may not be able to exchange heat with blood inside the blood vessel, and the skin surface temperature may be too low. In addition, when the heat transfer plate in the heat exchanging portion is attached, the area of heat exchange with the skin surface increases, and the area can be made such that comfortable heat exchange can be performed without excessively lowering the temperature. As the heat transfer plate, aluminum, copper or the like having a good thermal conductivity is suitable.

For example, the following relationship between the surface temperature and comfort of the Peltier element during cooling was obtained through experiments.
5 ° C or less ... Risk of frostbite 5-10 ° C ... Painful 10-20 ° C ... Comfortable temperature 20-25 ° C ... Unsatisfactory 25 ° C or more ... No effect

  In the above experiment, even when a heat transfer plate is used, heat can be exchanged at the carotid artery at about 10w to 20w at one location. If it is cooled further, the temperature becomes too low and there is a risk of pain and frostbite. Accompanied by. Furthermore, for cooling, the cooling capacity can be increased by increasing the number of Peltier elements and cooling a plurality of portions where thick blood vessels other than the carotid artery, such as the subclavian, armpit, and base of the foot, are close to the skin surface.

<Example 4>
FIG. 6 is a diagram for explaining an example in which a Peltier element and a heat exchange part are provided on a metal sheet according to a fourth embodiment of the present invention. In FIG. 6, the body cooling and heating apparatus of the fourth embodiment includes a heat conductive metal sheet 61, a Peltier element 64, and a heat exchange unit 66. In the body cooling / heating device, the circulation unit, the power supply unit, and the like are omitted. The heat conductive metal sheet 61 is made of, for example, copper or aluminum, and is rolled, for example, to a thickness of 0.3 mm or less to have high flexibility and high heat conductivity. Since the heat conductive metal sheet 61 has high flexibility, it can be efficiently cooled and heated as a portable body cooling and heating device by fitting more than a half circumference of the neck.

<Example 5>
FIG. 7 shows a fifth embodiment of the present invention and is a view for explaining an example in which a Peltier element and a heat exchange part are provided on a heat conductive metal sheet via a graphite sheet. In FIG. 7, the left half is an assembled view, and the right half is a view after being assembled. The heat conductive metal sheet 61 is made of copper or aluminum having a thickness of about 0.3 mm, and has a shape capable of coming into contact with the skin at least half a circumference around the neck. A pair of Peltier elements 64 is provided in the vicinity of both end portions of the heat conductive metal sheet 61 and is accommodated in a water cooling jacket 1010.

  The heat conductive metal sheet 61 is configured to transmit heat of a heat generating surface (cooling surface) by the Peltier element 64 to the whole. The heat conductive metal sheet 61 is bonded with a graphite sheet 63 via a heat conductive adhesive 62. On the graphite sheet 63, a Peltier element 64 is attached via, for example, a heat conductive adhesive. Further, the Peltier element 64 is accommodated in a water cooling jacket 1010 with a heat exchanging portion 66 provided at the top.

  Adhesive tapes 65, 65 ′ are adhered to the heat conductive metal sheet 61 so as to cover the graphite sheet 63. The Peltier element 64 and the heat exchanging unit 66 are schematic diagrams of an example in which the example on the left side of FIG. 7 is a separate body and the right side is integrated. The details of the Peltier element 64, the heat exchanging portion 66, the water cooling jacket 1010 and the like are shown in FIG.

  The heat exchanging unit 66 circulates cooling water or coolant to the heat generating surfaces (cooling surfaces) of the pair of Peltier elements 66 via, for example, a resin flexible pipe. The heat exchanging unit 66 performs heat exchange by cooling or heating cooling water or coolant supplied to the circulating unit attached to a part of the body away from the neck.

  FIG. 8 is a view for explaining a state in which the body cooling / heating apparatus of the present invention is actually attached to the body. In FIG. 8, for example, the cooling (heating) unit provided with the Peltier element 64 shown in FIG. 7 covers more than half of the circumference of the neck 87. The power supply unit 84 supplies power to the Peltier element 64 via the wiring 83, the control unit 82, and the flexible pipe 81, and also serves as a power source for circulating the cooling water or coolant. The body 86 has, for example, a belt 85 attached to the waist, and the control unit 82 and the power supply unit 84 are attached to the belt 85 to improve the portability of the body cooling / heating device of the present invention.

<Example 6>
FIG. 9A is a diagram for explaining a state in which the external tank and the reserve tank according to the sixth embodiment of the present invention are coupled, and FIG. 9B is a diagram for explaining the state in which the external tank and the reserve tank are separated. FIG. 9 (a) and 9 (b), the external tank 91 is for removing bubbles from the cooling water or coolant supplied to the heat exchange section 66 (see FIG. 7). The external tank 91 is made of, for example, a thin resin member and has a structure that can be pumped.

  The external tank 91 is provided with a first valve mechanism 92 at the bottom. The reserve tank 95 includes a second valve mechanism 96 coupled via a first valve mechanism 92 provided in the external tank 91. The external tank 91 can move the bubbles 98 in the reserve tank 95 to the external tank 91 through a pumping action by gripping or releasing and the first valve mechanism 92 and the second valve mechanism 96. The first valve mechanism 92 supports a spring by a spring support 921. Similarly, the second valve mechanism 96 supports a spring by a spring support 961. The valve mechanism and the spring have a structure in which the external tank 91 and the reserve tank 95 can be easily attached and detached.

  In FIG. 9, the reserve tank 95 is provided with a mesh 93 at the bottom. The mesh 93 has finer eyes than the bubbles 98. If the reserve tank 95 has bubbles 98 inside, the mesh 98 having a finer mesh than the bubbles 98 can keep the bubbles 98 inside the reserve tank 95 to prevent the bubbles 98 from being sucked into the pump. it can.

<Example 7>
FIG. 10 is a view for explaining an example of a water cooling jacket according to a seventh embodiment of the present invention. In FIG. 10, a water cooling jacket 1010 includes a substrate 1011 made of a heat conductive metal sheet, a graphite sheet, and a Peltier element, and a plurality of U-shaped cross sections attached to the substrate 1011 via a heat conductive adhesive. A metal fin 1012, a central shielding wall 1013, an inlet 1015 made of a pipe, and an outlet 1016 are also formed.

  Cooling water or coolant that has entered from the inlet 1015 passes through a plurality of metal fins 1012, flow passages 1014 between the metal fins 1012, end flow passages 1014 'of these flow passages, and metal fins 1012'. Exit through street 1016. A water cooling jacket 1010 including the metal fins 1012 and the metal fin flow passages 1014 ′ cools (heats) the Peltier element.

  The metal fin 1012 can be easily made of copper or aluminum by bending or extruding a sheet metal. The metal fins 1012 can be fixed by a heat conductive adhesive, soldering, or silver paste. The water-cooling jacket 1010 is made of resin, and the inside can be cut out by machining to provide a cooling water passage, thereby reducing the weight. Further, the water cooling jacket 1010 can be adhered to the Peltier element with a rubber-based adhesive to prevent water leakage at the same time.

  FIG. 11 shows another example of the seventh embodiment of the present invention, and is a view for explaining a water cooling jacket. In FIG. 11, the water cooling jacket 1010 is different only in that it is made of a corrugated metal member 1111 having a U-shaped cross section, and is the same as the embodiment of FIG. 10 in other points.

  FIG. 12 is a sectional view for explaining the vicinity of the water cooling jacket in the seventh embodiment of the present invention. The graphite sheet 1021 has a structure sandwiched between the Peltier element 1022 and the heat conductive metal sheet 1011. The graphite sheet 1021 has a weak mechanical strength in the thickness direction and has a drawback that it is easily peeled off like a mica. Further, the graphite sheet 1021 is broken when an external force is applied even if the surface is simply firmly bonded.

  Therefore, the water cooling jacket 1010 is provided with a graphite sheet 1021 on the heat conductive metal sheet 1011 and the side portions thereof are fixed with epoxy adhesives 1023, 1023 'or silver paste. When the water-cooling jacket 1010 is made of resin, it can be reduced in weight by forming a water channel by injection molding inside and providing a metal fin 1012. Further, the water-cooling jacket 1010 can be adhered to the Peltier element 1022 with a rubber adhesive to prevent water leakage at the same time.

  The surface in contact with the Peltier element 1022 uses a heat conductive adhesive (silver paste or the like) having a very high heat conductivity. However, adhesives with extremely high thermal conductivity are highly viscous and difficult to apply thinly and uniformly. Therefore, in a place other than in contact with the Peltier element 1022, between the graphite sheet 1021 and the thermally conductive metal sheet 1011, a moderately heat conductive viscous body (thermal conductivity of about 1 W / mK), for example, The heat conduction grease can be enclosed and integrated.

  When the graphite sheet 1021 and the heat conductive metal sheet 1011 are wound along the neck, a difference in distance occurs between the inside and the outside. The thermal conductive grease absorbs a difference in winding distance and has a slip that prevents wrinkles, and can expel an air layer in an uneven portion of the graphite sheet 1021. Moreover, the said heat conductive good viscous body can also enclose a heat conductive paste, for example. Although the heat conductive paste is a creamy viscous body at the time of application, it does not harden into rubber and leaks over time, and a state close to ideal surface contact can be obtained.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example. The present invention can be modified in various ways without departing from the scope of the claims. For example, known or well-known materials can be used for the Peltier element, pipe, heat sink, and the like. Moreover, a well-known or well-known thing can be used for a pump, a radiator, a fan, and a storage battery. Furthermore, a well-known or well-known thing can be used for an external tank, a reserve tank, a heat conductive adhesive, a heat conductive metal sheet, a valve mechanism, etc.

11, 11 '... Peltier element 111, 111', 111-1, 111-2 ... Contact surface 112, 112 '...・ ・ ・ ・ ・ ・ ・ ・ Circulating part 113 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Pipe 12 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ Radiator 13 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Power supply 131, 132 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Wire Harness 133 ... switch 14 ... pump 15 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Fan 61 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Heat conductive metal sheet 62 ・ ・ ・..... Thermally conductive contact Agent 63 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Graphite Sheet 64 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Peltier Element 65・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Adhesive tape 66 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Heat exchange part 81 ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Flexible pipe 82 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Control unit 83 ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Wiring 84 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Power supply 85 ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Belt 86 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Body 87 ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ Neck 91 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ External tank 92・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ First valve mechanism 93 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mesh 94 ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cooling water or coolant 95 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Reservation tank 96 ・ ・2nd valve mechanism 97 ... route 98 ... ... Air bubbles

Claims (3)

In the body air conditioning system using Peltier elements,
A thermally conductive sheet that abuts against the skin in the vicinity of a blood vessel that passes close to the surface of the neck;
A pair of Peltier elements provided on the thermally conductive sheet;
A circulating portion for circulating cooling water or coolant to the heat generating surfaces (cooling surfaces) of the pair of Peltier elements;
A heat exchange part for cooling or heating cooling water or coolant supplied to the circulation part;
The body air-conditioning / heating apparatus characterized by comprising at least. The thermally conductive sheet orbits the neck and is in contact with the neck skin;
The Peltier element is provided in the vicinity of both ends of the thermally conductive sheet,
The body cooling and heating apparatus according to claim 1. The thermally conductive sheet is made of graphite or / and metal;
The body air-conditioning / heating device according to claim 1 or 2.

Images