JPH09234137A - Bed device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed device which intensively and highly precisely cools or heats a prescribed part on the head or the feet of a human body. SOLUTION: This bed device is composed of a ventilating path 5 for distributing air via a part of a bed 1 having a ventilating hole formed therein, a cold source 8 provided in the bed upper stream side of the ventilating path 5, and an air blasting means 7 for distributing air to the ventilating path 5. A part (H) of a human body (M) which is required to be cooled is positioned in a part of the bed 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bedding device having a cooling or heating function for a part of a human body.

[0002]

2. Description of the Related Art As a bedding apparatus having a cooling function for a part of a human body, there has been conventionally known, for example, Japanese Patent Laid-Open No. 3-29611.
The sleep-inducing device described in Japanese Patent Publication is known.

This device is provided with, for example, a brine cooler, a brine heat exchanger, a heat storage panel having a heat storage agent, and the like, and an indirect cooling type refrigerating device is constituted by connecting them to each other with a brine distribution pipe. Brine, which is the secondary refrigerant cooled and cooled from the cooler through the brine heat exchanger, is flowed into the brine pipe of the heat storage panel section.
Then, cooling latent heat is obtained by phase-changing the heat storage agent that is the primary refrigerant of the heat storage panel section, and the cooling latent heat is transferred to the upper part of the human body (head to shoulder) on the bed, for example, via the outer heat radiation panel. It radiates and cools a part of the human body.

A cooling device provided with a large number of large and heavy parts, a long pipe, a large-capacity tank, a large-diameter heat storage / radiation panel, etc. is integrated on the human head side of a bed, for example. A large-diameter heat radiation panel is provided so as to cover the upper part of the human body with a predetermined radiation space.

[0005]

In the case of a bedding device that employs such a radiation cooling system, the head and face are not directly exposed to the cold air, so the usability is good and the function as a sleep-inducing device is good. Certainly expensive.

However, in the case of the device, the device structure is too large, the installation space is restricted, the cost is extremely high, and the feasibility as an actual product is low. In addition, the weight is large and the bed cannot be moved.

Further, it is not easy to concentrate the cooling latent heat to a specific cooling part of the human body and control the cooling function, and it is impossible to apply it to, for example, brain cooling treatment.

[0008] Recently, the brain region of a patient with cerebral injury such as cerebral ischemia caused by cerebral hemorrhage or cardiac arrest has a normal brain temperature (36.
Predetermined temperature lower than around 5 ℃ (32 ℃ to 34 ℃)
It has been confirmed that the maintenance of brain damage suppresses the progression of brain damage (eg, “circulation control”, 1985, Issue 483).
From this point of view, a brain cooling device that intensively cools only the brain part has been developed.

The brain cooling device currently being developed has, for example, a mat-shaped cooling member in which cooling water (about 5 ° C.) flows in a pillow structure and is applied to the head, or a cap structure is applied to the head. It is covered, and there are some difficulties in that the entire head cannot be cooled evenly, there is a feeling of pressure and wearing, and it takes time to wear.

The present invention has been made based on the above circumstances, and has a simple structure, a light weight and a low cost, high cooling performance, and a highly accurate cooling function suitable for brain cooling. Another object of the present invention is to provide a bedding apparatus having a heating function suitable for other uses.

[0011]

In order to achieve the object, the invention of the present application comprises the following effective problem solving means.

That is, first, in the bedding apparatus of the present invention, as shown in FIG. 1, for example, a ventilation passage 5 for circulating air through a part of the bed 1 in which ventilation holes 11 are formed, and the ventilation passage 5 of the ventilation passage 5. A cold heat source 8 provided on the upstream side of the bed 1,
A ventilation means 7 for circulating air in the ventilation passage 5 is provided, and the cooling part H of the human body M is located at a part of the bed 1 having the ventilation holes 11 to which the cold air from the cold heat source 8 is supplied. As a result, the cooling portion H of the human body M is concentratedly and efficiently cooled.

Further, in the bedding apparatus of the present invention, the temperature sensor 10b for detecting the temperature of the cooling part H of the human body M in the above structure, and the cooling part of the human body M based on the detected value of the temperature sensor 10b. The temperature control means 9 for controlling the cooling capacity of the cold heat source 8 or the amount of air blown by the air blower 7 is provided so that the temperature of H becomes a predetermined set cooling temperature.
The cooling part H of the human body M to which the cold air from is supplied is cooled to a predetermined set cooling temperature with high accuracy.

In this case, further preferably, another temperature sensor 10a for detecting the temperature of the cold air passing through the cold heat source 8 is provided on the downstream side of the cold heat source 8 in the ventilation passage 5, When the temperature of the cold air detected by the temperature sensor 10a has a height difference of a predetermined value or more as compared with the cold air temperature corresponding to the preset cooling temperature of the human body cooling unit H, the operation of the blower unit 7 is stopped, A fail-safe system is added so that the cooling is performed only near the target predetermined set cooling temperature.

As a result, for example, abnormal control is performed when the cold air temperature is too low or vice versa due to a failure of each part of the apparatus such as the temperature sensor 10b for detecting the temperature of the human body cooling part H and the cold heat source 8. It is reliably avoided, and the safety when used as a brain cooling device is guaranteed.

Further, in the bedding apparatus of the present invention, as shown in FIG. 4, for example, a ventilation passage 5 for circulating air through a part of the bed 1 in which ventilation holes 11 are formed, and the ventilation passage 5 of the ventilation passage 5. The ventilation hole 1 is provided with a warm heat source 8 provided on the upstream side of the bed 1 and a blower 7 for circulating air in the ventilation passage 5, and the warm air from the warm heat source 8 is supplied.
The heating part F of the human body M can be positioned on a part of the bed 1 having the number 3 so that the heating part F of the human body M is intensively and efficiently heated.

Further, in the bedding apparatus of the present invention, in the construction, the temperature sensor 10a for detecting the temperature of the warm air on the downstream side of the heat source 8 and the heat source 8 based on the detection value of the temperature sensor 10a. The temperature control means 9 for controlling the heating capacity of the warm heat source 8 is provided so that the temperature of the warm air on the downstream side becomes a predetermined set temperature, and the predetermined setting is performed with the temperature of the warm air from the warm heat source 8 as a target. I try to maintain the value.

As a result, the heating part F of the human body M is appropriately heated to the optimum temperature.

[0019]

As a result of the above, according to the bedding apparatus of the present invention, a cooling / heating system is constructed by using a thermomodule consisting of a thermoelectric element having a Peltier effect or a regenerator such as magnesium chloride as a cold heat source / heat source. , By combining them with a part of the bed, it is possible to intensively and efficiently cool and warm a part of the sleeping human body at an appropriate temperature, so the following beneficial effects are obtained. Obtainable.

(1) The device structure is simple, compact and low in cost. Therefore, the weight is light and the bed can be moved freely.

(2) Since the whole of a specific part such as a head or a foot which is a part of the human body can be uniformly or accurately cooled or heated, it can be used as a medical device such as a brain cooling device or a thermotherapy device. It can be used appropriately. Further, in such a case, there is no useless feeling of pressure and feeling of wearing, and it can be used in a very relaxed state. Also, the fail-safe function against abnormal temperature is guaranteed, so the safety is high.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) First, FIG. 1 shows a configuration and a usage pattern of a bedding apparatus according to Embodiment 1 of the present invention configured as a bed cooling apparatus (patient bed) capable of brain cooling treatment for a hospital, for example. There is.

In the figure, reference numeral 1 is a bed which is constructed so that a patient M with a brain disorder such as cerebral ischemia can sleep, and the bed 1 has one end 1a vertically penetrated through it and the upper end side thereof. On the other hand, a ventilation hole 11 of a predetermined size is formed in which a soft net 12 having good ventilation and elasticity is stretched, while legs 2 and 2 are provided on the lower left and right sides on the other end 1b side. .

On the side of the one end 1a of the bed 1,
As shown in the drawing, the head cooling device 30 is provided so as to cover the ventilation holes 11.
Is provided. The head cooling device 30 has an outer casing 3 having a predetermined height (length) in the up-down direction and a predetermined width in the left-right direction and the front-rear direction, and is located substantially in the center of the outer casing 3. A partition wall 4 extending vertically for a predetermined length, an air passage 5 defined by the partition wall 4 and formed endlessly in the vertical direction of the outer periphery thereof, and a ventilation passage 5 provided in the middle of the air passage 5. It is composed of a thermo module 8 which is a cold heat source and a blower fan 7.

As shown in the drawing, the ventilation passages 5 are a first ventilation passage 5a located on the back side and extending in the vertical direction, a second ventilation passage 5b located on the upper side and extending in the front-rear direction, and a front portion. And a fourth ventilation passage 5d located on the lower side and extending in the front-rear direction, and located on the downstream side of the air flow of the upper second ventilation passage 5b. The above-mentioned thermo module 8 is located in the middle of the fourth ventilation passage 5d, and the above-mentioned blower fans 7 are installed respectively. Further, as shown in the drawing, an opening 13 having a predetermined diameter and opening to the front side of the bed is formed on the front side of the third ventilation passage 5c.

By the way, the thermo-module 8 has a thermoelectric element which produces a Peltier effect between the pair of upper and lower flat alumina substrates 21 and 22 with the copper pieces 23 and 24 interposed therebetween, as shown in FIGS. 2 and 3, respectively. 25, 25 ...
A metal net cover 26 that is provided with
The copper pieces 23 and 24 are connected to the temperature control unit 9 including a microcomputer by power supply and control wirings E ₁ and E ₂ . The thermo module 8 having the above structure is provided with a large number of ventilation holes 27, 27, ... As shown in FIG. 3 in order to improve ventilation and heat exchange performance.

On the other hand, reference numeral 10a is a first thermosensor (temperature sensor) composed of a thermistor provided on the downstream side of the thermomodule 8 and is actually supplied to the head H of the patient M as shown in the drawing. It is designed to detect the temperature of cold air. The detection output of the first thermosensor 10a is input to the temperature control unit 9. Reference numeral 10b is a partition wall 4 facing the head H of the brain-injured patient M.
It is a second thermosensor composed of a thermistor provided in the portion, detects the radiation temperature (brain temperature) from the head H of the brain-injured patient M, and inputs the detection output to the temperature control unit 9.

Then, the temperature control unit 9 determines the cooling capacity of the thermo module 8 and the blower fan 7 based on the detection values of the first and second thermo sensors 10a and 10b.
Feedback control of the air flow rate of the brain
The temperature of the head H (brain temperature) of the human head can effectively suppress the progression of brain damage, and is maintained at an optimum constant cooling temperature (target temperature: 32 ° C to 34 ° C) that ensures normal brain function. To do.

In the control, basically, the temperature detected by the second thermosensor 10b is the target constant cooling temperature (3
2 ° C. to 34 ° C.) so that the cooling capacity of the thermo module 8 as a cold heat source and the blowing amount of the blowing fan 7 (rotation speed)
Although it is sufficient to control and, it is conceivable that a failure of the second thermosensor 10b or an abnormality of the thermomodule 8 may actually occur. In such cases, it is very dangerous. Therefore, in the present embodiment, while the actual cool air temperature supplied to the head H through the thermo module 8 is accurately detected by the thermo sensor 10a, the detected value is the constant target cooling temperature (32 ° C. to 34 ° C.). When the temperature of the cold air corresponding to (° C) changes by a predetermined level or more in either direction, the thermomodule 8 and the blower fan 7 are quickly stopped to ensure responsiveness and safety. It is like this.

The outer casing 3 has legs 6, 6 at the lower left and right sides of the back side thereof, and the bed end 1a is formed in the middle of the third ventilation passage 5c by utilizing the opening 13.
The ventilation holes 11 on the side are fitted so as to be interposed, and are integrally attached to the bed 1.

As a result, in the above configuration, the thermo module 8 is now driven through the temperature control unit 9,
Further, when the blower fan 7 is rotationally driven, the inside of the ventilation passage 5 is changed from the fourth ventilation passage 5d to the first ventilation passage 5a, the second ventilation passage 5b, the third ventilation passage 5c (the ventilation holes) as indicated by broken line arrows in the figure. 1
1), the wind flows in a state of endlessly proceeding with the fourth ventilation passage 5d, and for example, the brain-injured patient M sleeps in a supine state with the head H placed on the soft net 12 of the ventilation hole 11 as illustrated. If so, the cold air that has been cooled and heat-exchanged by the thermo module 8 that is the cold heat source downstream of the second ventilation passage 5b effectively cools the head H of the brain-injured patient M, and then the ventilation hole 11 is formed. Will be followed by. Therefore, the brain-injured patient M can surely cool only his / her head in a rested sleeping state without feeling any pressure, and effective brain cooling can be performed.

Moreover, in this case, the thermo module 8 which is the cold heat source is controlled by the temperature control unit 9 which is a microcomputer and the first thermo sensor 10a.
While accurately detecting and monitoring the actual cold air temperature to the head H of the brain-injured patient detected by the second thermosensor 10b
The accurate feedback control of the thermo module 8 and the blower fan 7 is performed so that the cooling temperature of the head H detected by the above-mentioned temperature becomes the target constant cooling temperature (32 ° C. to 34 ° C.), and for some reason. When cold air with an abnormal temperature is supplied such that the temperature of the head H deviates from the target temperature (32 ° C. to 34 ° C.) beyond the allowable range, the head temperature changes before the temperature changes. Since the operations of the blower fan 7 and the thermo module 8 are stopped,
It is possible to realize more accurate and safe brain cooling.

(Embodiment 2) Next, FIG. 4 shows a structure and a use form of a bedding apparatus according to Embodiment 2 of the present invention, which is constituted as a foot heating device 40 for a human body, for example.

The thermomodule 8 having the Peltier effect shown in FIGS. 2 and 3 used as the cold heat source in the first embodiment, on the other hand, when the direction of the current applied to the electrode part is reversed, the thermomodule 8 is heated next time. It can also be used as a source.

Therefore, in the present embodiment, while the thermo module 8 is made to act as a heat source, for example, as shown in FIG.
By reversing the use direction of the bed 1 described above as shown in FIG. 5, the thermotherapy for warming the foot F of the patient M is enabled. In this case, the second thermosensor 10b is removed because there is little risk of a change in the temperature of the warm air as in the case of cooling the brain.

All other configurations are the same as those in the first embodiment.
1 is similar to the case of FIG. 1, and is shown with the same reference numerals as in FIG.

With this structure, it is suitable for various types of hyperthermia such as rheumatism treatment of the foot F.

(Modification) The configuration of each part in each of the above-described embodiments can be modified in various ways as described below in addition to the above-described case. Instead of the above-mentioned configuration, each of these configurations is also arbitrary. Adopted by.

(1) The power source of the thermo module 8 is a rechargeable battery power source. In this way, the bed can be moved freely and can be used even in a place without an AC power source.

As a result, it is suitable for ambulances and the like.

(2) The thermo module 8 is used as a regenerator such as magnesium chloride or dry ice. In this case, the same effect as the above (1) can be obtained at a lower cost.

(3) The following various devices can be added to the ventilation passage 5.

Oxygen generator By adding an oxygen generator, the oxygen concentration during ventilation can be increased, and an oxygen suction function can be realized.

Humidification Device By adding a humidification device, it is possible to avoid inhalation of dry air when heating the room, and to make it suitable for a patient having a respiratory system.

Negative Ion Generator If a negative ion generator is provided, a negative ion therapy function can also be realized.

Air Cleaner When an air cleaner is provided, it is possible to supply clean air to the patient with cold air.

Infrared Generator If an infrared generator is provided, the thermotherapy effect in the second embodiment can be further improved.

(4) The head cooling device 30 or the foot heating device 40 is not attached integrally with the bed 1, but can be attached and detached arbitrarily. At this time, of course, lock / unlock means is provided.

(5) The bed 1 itself is a mobile bed with casters.

[Brief description of drawings]

FIG. 1 is a sectional view showing a configuration of a bedding device according to a first embodiment of the present invention.

FIG. 2 is a side view showing a structure of a thermo module of the device.

FIG. 3 is a plan view showing a structure of a thermo module of the device.

FIG. 4 is a cross-sectional view showing a configuration of a bedding device according to Embodiment 2 of the present invention.

[Explanation of symbols]

1 is a bed, 3 is an outer casing, 4 is a partition wall, 5 is a ventilation passage, 7 is a blower fan, 8 is a thermo module, 9 is a temperature control unit, 10a is a first thermosensor, and 10b is a thermosensor.
Is a second thermosensor.

Claims (9)

[Claims] 1. A ventilation passage (5) for circulating air through a part of the bed (1), and a cold heat source (8) provided on the upstream side of the bed (1) of the ventilation passage (5). A cooling unit for the human body (M) in a part of the bed (1) to which cold air from the cold heat source (8) is supplied, the ventilation unit (7) for circulating air in the ventilation passage (5). A bedding device characterized in that (H) can be positioned. 2. An air passage (5) for circulating air through a part of the bed (1), and a cold heat source (8) provided on the upstream side of the bed (1) of the air passage (5). A blower for circulating air through the ventilation passage (5), and a temperature sensor (10b) for detecting the temperature of the cooling unit (H) of the human body (M),
Based on the detection value of the temperature sensor (10b), the cooling capacity of the cold heat source (8) or the blowing means (7) is adjusted so that the temperature of the cooling unit (H) of the human body (M) reaches a predetermined set cooling temperature. A temperature control means (9) for controlling the amount of blown air, and the cooling unit (H) of the human body (M) is located at a part of the bed (1) to which cold air from the cold heat source (8) is supplied. The bedding apparatus, wherein the cooling unit (H) of the human body (M) is cooled to the predetermined set cooling temperature. 3. The cold heat source (8) downstream of the ventilation passage (5),
A temperature sensor (10a) for detecting the temperature of the cold air passing through the cold heat source (8) is provided, and the actual temperature of the cold air detected by the temperature sensor (10a) is set to a predetermined value in the human body cooling unit (H). 3. The bedding apparatus according to claim 2, wherein the operation of the blower means (7) is stopped when there is a difference of a predetermined temperature or more as compared with the target cold air temperature corresponding to the cooling temperature. 4. An air passage (5) for circulating air through a part of the bed (1), and a heat source (8) provided on the upstream side of the bed (1) of the air passage (5). And a ventilation means (7) for circulating air through the ventilation passage (5), and adding the human body (M) to a part of the bed (1) to which the warm air from the heat source (8) is supplied. A bedding device, wherein the warm part (F) can be positioned. 5. An air passage (5) for circulating air through a part of the bed (1), and a heat source (8) provided on the upstream side of the bed (1) of the air passage (5). A blower (7) for circulating air through the ventilation passage (5), and a temperature sensor (1) for detecting the temperature of the warm air downstream of the heat source (8).
0a) and a temperature for controlling the heating capacity of the heat source (8) so that the temperature of the hot air on the downstream side of the heat source (8) becomes a predetermined set temperature based on the detected value of the temperature sensor (10a). The heating means (F) of the human body (M) is located at a part of the bed (1), which is provided with a control means (9) and is supplied with warm air from the warm heat source (8). A bedding device characterized in that the heating part (F) of M) is heated to the predetermined set temperature. 6. A ventilation passage (5) is provided in a part of the bed (1).
The bedding device according to claim 1, 2, 3, 4 or 5, wherein a ventilation hole (11) corresponding to the above is formed. 7. The bedding apparatus according to claim 1, 2, 3, or 6, wherein the cold heat source (8) is constituted by a thermomodule having a thermoelectric element having a Peltier effect. 8. The bedding apparatus according to claim 1, wherein the cold heat source (8) is composed of a cold storage agent. 9. The bedding apparatus according to claim 4, 5 or 6, wherein the heat source (8) is constituted by a thermomodule having a thermoelectric element having a Peltier effect.