JP5257741B2 - Air circulation bedding - Google Patents

Description

  The present invention relates to a bedding that allows airflow to pass through a bedding, particularly a bedding, and removes the amount of heat generated from a human body at bedtime and moisture caused by insensitive excretion and sweating.

  Humans are constant temperature animals and maintain a constant body temperature, but their body temperature varies periodically in the range of about 0.5 ° C to 1.5 ° C depending on the body clock and is called circadian (circadian) rhythm. It is. During sleep, keeping the bedside weather (the temperature and humidity of the space between the futon and the sleeping person) constant leads to comfortable sleep. When lying in the bedding and going to bed, if the heat retention of the bedding (especially the sleeping bedding) is appropriate for the bedroom environment, the weather in the bed approaches 33 ° C. and the humidity approaches 50% RH. This in-bed weather is constant regardless of the season, and is said to be a comfortable sleep area (sleep comfort zone). In order to obtain a comfortable sleep, it is necessary to have bedding that keeps the temperature in the bed at around 33 ° C. and the humidity around 50% RH.

  In recent years, the days of tropical nights are increasing due to the effects of global warming and the heat island phenomenon due to urbanization, and it is also possible to go to bed in a temperature-controlled environment as to how to spend this comfortably However, for temperature regulation, it is desirable to sleep efficiently in an environment as close as possible to the natural state.

  For this purpose, there has been considered an air-flowing bedding that keeps the weather in the bed in a good environment and uses it on an elastic body such as a bed mattress or a quilt (Patent Document 1). In this bedding, outside air is passed through a bag-like sheet having both ends open, and air that increases in temperature and humidity due to sweat or insensitive steaming from the surface of the human body in contact with the bag-like sheet, The temperature and humidity gradient near the body surface is increased by adjusting the temperature and humidity near the surface of the human body in contact with the bedding to match the temperature and humidity outside the bedding.

The bag-like sheet is provided with a means to maintain a constant gap with a spacer or the like so that the sleeper will not be crushed and disturb the flow of the air even if the sleeping person sleeps on it, and the air blower attached to one end of the bag-like sheet Air is circulated from the means toward the opening at the other end.
The skin of the bag-like sheet is laid on the bag-like sheet by using a low-ventilation fabric such as a blowout prevention side fabric or a moisture-permeable waterproof fabric used for the side of a feather futon. Insensitive digestion and sweat that come out of the body surface of a person moves through the bag-like epidermis into the bag-like interior and is discharged outside.
International Publication Number WO99 / 43238

  However, when using a low-breathable fabric such as a blowout prevention side fabric or a breathable waterproof fabric used for the side of the feather futon, the bed around the sleeper on the bedding on which the sleeper is lying The internal weather can be maintained up to a certain level of satisfaction due to the effect of the air circulation bedding, but the surrounding air is not necessarily replaced or replaced under the bedding on which the sleeping person is lying. Was not satisfactory, and there was a situation where the weather in the bed became unsatisfactory around the lower surface of the surface in contact with the bedding.

  In view of the above points, the present invention provides a bedside weather at the lower surface of an air flow bedding, that is, a portion where the bed bedding and the air flow bedding come into contact when the air flow bedding is put on a mattress or a bed bedding. Tended to worsen, and in turn affected the body temperature of sleepers.

  The present invention prevents the occurrence of such a situation, and obtains an air-flowing bedding that can maintain the conditions satisfying the weather in the bed between the air-flowing bedding and the bedclothes on which the air-flowing bedding is placed. It is aimed.

A body surface temperature cooling device that circulates air lower than the body surface temperature in the vicinity of the body surface of the sleeping person and increases the temperature gradient in the vicinity of the body surface, and the body surface temperature cooling device is connected to the front and back of the bag body. via a spacer and that constitutes an air flow path having a flexible uneven surface between both sides ground has a constant height in succession, the air intake inlet and the air to both ends of the bag body into the air passage While providing a discharge port, a third opening for discharging the air in the bag body to the outside of the bag body is opened on the surface of the bag body on the opposite side of the surface where the body surface of the sleeping person contacts the bag body.

  In the air circulation type bedding of the present invention, the ambient temperature in the surrounding bed is set to an appropriate temperature and humidity by ventilating the body surface temperature cooling device made of a bag placed on a mattress or a bedclothing, etc. In order to prevent the temperature in the bed between the air-flowing bedding on which the sleeping person is lying and the bedding and mattress on which it is placed away from the appropriate temperature and humidity, it will be hot and humid. By providing a third opening in addition to the air inflow / exhaust opening on the back surface of the surface of the air-flowing bedding that contacts the upper body of the sleeping person, it is possible to improve the ventilation of the part and to increase the temperature and humidity. It is preventing.

The best mode for carrying out the air circulation type bedding of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing a state in which an air-flowing bedding 1 is placed on a mattress 2 and a bedding 3 is hung on a sleeper 4, and FIG. 2 is a body surface temperature cooling member of the air-flowing bedding 1. FIG. 5 is a cross-sectional view of FIG. 5, and FIG.

The air circulation type bedding 1 is a bag comprising a front side fabric 9 and a back side fabric 10 provided with a fan 8 at one end of a body surface temperature cooling member 5 having an air inlet 6 at one end and an air outlet 7 at the other end. 11. Bag 11 is spacer 12 is provided inside the spacer 12 isolates have appropriate intervals and front areas 9 and the back fabric 10, between both sides ground 9, an air outlet from the air intake inlet 6 An air flow passage 13 directed to 7 is formed. An example of the spacer 12 is shown in FIG. The spacer 12 shown in FIG. 2 is a sheet having a flexible uneven surface continuously having a certain height and having a plate shape as a whole, and the inside of the plate sheet has a blow-through structure that allows easy passage of wind. It is made of a resin material such as polyethylene or polypropylene, and has a strength that is not crushed by body pressure. As the spacer, a knitted fabric structure or a non-woven fabric structure with good air permeability may be used.

  The air circulation type bedding 1 shown in FIG. 1 has a fan 8 installed at one end of an air suction port 6, external air is pressed into the body surface temperature cooling member 5, and is discharged to the outside through an air circulation path. However, the rotation of the fan 8 may be reversed, and outside air may be sucked into the body surface temperature cooling member 5 from the air discharge port 7 in FIG. 1 and discharged to the outside through the fan 8 from the air suction port 6.

  The body surface temperature cooling member 5 forms the bag body 11 composed of the front side ground 9 and the back side ground 10 as described above, but when the sleeping person 4 lies on the body surface temperature cooling member 5, An opening 15 (shown in FIG. 2) is provided on the surface opposite to the part in contact with the upper body of the person 4, that is, the backside ground 10, and a part of the air in the air flow passage 13 in the body surface temperature cooling member 5 is It is possible to be discharged from the opening 15 to the outside. The opening 15 may have a rough texture or the like on the back side to increase the air permeability as compared with other parts. Also, a part of the back side 10 is cut to form an opening 15 on the top. A separate coarse fabric 16 may be provided.

Next, the operation of the air circulation type bedding 1 of the present invention will be described.
The bedding 1 of the present invention forms a flow of wind along the body surface without applying wind in the vertical direction of the body, and removes moisture due to perspiration and insensitive steaming, thereby causing a temperature / humidity gradient near the body surface. Increase Since the wind flows in parallel to the body line, the skin near the body surface is not dried by the wind hitting the body, and the air near the body surface can be removed.

  The body surface temperature cooling member 5 maintains the temperature of the inflowing bedroom environment at the portion in contact with the body (position (B) shown in FIG. 1) when the wind of the bedroom environment flows through the bedclothes where the body contacts. The other parts (between the upper part of the body that is not in contact with the body surface temperature cooling member 5 and the sleeping bedding (position (A) shown in FIG. 1)) can keep the temperature and humidity in the bed appropriately, so sleep From this point of view, it is a system that is gentle on the body, but between the body surface temperature cooling member 5 and the mattress 2 on which the member 5 underneath is placed (position (C) shown in FIG. 1) is Air stagnates and it is difficult to maintain an appropriate temperature and humidity.

  Therefore, when the air-flowing bedding 1 of the present invention was placed on the bed mattress 2 and a cotton blanket was hung from the top, the temperature change in the bed was examined. The experiment was conducted under the conditions that the temperature and humidity of the bedroom were 28 ° C. and 80% RH.

  In FIG. 1, air flows in the direction of the arrow through the blower fan 8. There are three temperature / humidity measurement points. Between the bedding and the body (A), the upper temperature and humidity in the bed, and between the body and the bedding, that is, where the body surface temperature cooling member and the body are in contact (B), the lower temperature and humidity in the bed Between the bedding 1 and the bedclothes (C), the lower temperature and humidity of the air circulation bedding 1 are measured. The results are shown in FIG.

  FIG. 4 shows the measurement of temperature and humidity when the air circulation type bedding 1 is not allowed to pass through the air and the bedclothes lie in the bedding for 1.5 hours, and then the air circulation type bedding 1 starts ventilation to stabilize the temperature and humidity 1 in the bed. The temperature and humidity after 5 hours were measured. It shows the change (difference) in each temperature and humidity.

In FIG. 4, black portions indicate changes in temperature, and dot portions indicate changes in humidity.
The temperature difference due to the presence or absence of air blowing is greatly changed between the lower part (B) in the bed (the position of the back) and the lower part (C) of the air circulation type bedding 1, and the effect of the air circulation type bedding can be understood well. It can be seen that the temperature at the position (chest position) of the upper part (A) in the bed does not change much in the suction type and the blow-out type, and the body is mildly maintained at the bedroom environment temperature. The effect of humidity with and without air blowing is greatly changed under the bed (the position of the back), and the effect of the air-flowing bedding due to the air flowing through the spacer portion can be seen.

Next, an experimental result is shown about the temperature difference between bedding and a sleeping person at the time of using this invention bedding.
The experiment was conducted in a laboratory under the conditions of summer bedroom conditions of 28 ° C. and 65% RH, and the air-flowing bedding 1 was placed on the bed mattress, and a cotton blanket was placed as the bedding 3 on the bed mattress. Hang the subject to sleep for the first 1.5 hours, do not use air-flowing bedding, start ventilation through the air-flowing bedding after 1.5 hours, and then sleep for another 1.5 hours. Recorded changes. The test subject was a woman in her 30s who conducted one experiment a day between 2pm and 5pm.

Three hours after the start of the experiment (1.5 hours after the start of ventilation in the air-flowing bedding), take a thermograph of the bedding surface where the subject's back and the body were in contact immediately after waking up, and the back and lay The surface temperature of the part in contact with the bedding was measured.
In Experiment 1, a bedding in which a breathable spacer (thickness 10 mm) is covered with a bag of low-breathed fabric (JISL-1096 breathable A method Frazier type breathability 0.7 cc / cm ² sec) is used. Used. As shown in FIG. 1, the wind passes under the sleeping person 4 from the fan 8 at the foot end, and the size of the bedding discharged from the air outlet 7 at the head side end to the outside of the bedding is 90 cm wide × 2 m long. Then, a third opening having a length of 50 cm and a width of 90 cm at the position of the head side 3/4 on the opposite side (the lower side / back side ground 10 in FIG. 2) of the back surface of the body surface cooling member 5 The experiment was carried out by applying a lace fabric having a rough stitch and covering the opening with the portion 15 provided and having good air permeability.
An experiment was conducted by covering the body surface temperature cooling member 5 with a double raschel cover fabric having a thickness of 5 mm and good air permeability to improve cushioning properties.

Experiment 2, in order to improve the cushioning properties of the body surface temperature cooling member 5, the periphery of Experiment 1 body temperature cooling member 5, the yarn joining the thickness 3mm thick outer material and lining from the thermal fusion yarn A polyester corrugated cardboard knit fabric having a mesh hole of about 2 mmφ on the surface, covered with a fabric that is hard to sag and has good air permeability, used as an experimental sample, and data was recorded in the same procedure as in Experiment 1.

Thermograph data 3 hours after the start of the experiment (1.5 hours after the start of ventilation), a thermograph of the body surface temperature cooling member contact portion where the body was in contact with the back of the subject immediately after getting up is shown in FIG. Show. The temperature distribution on the surface temperature cooling member surface where the back part and the body are in contact can be seen.
Experiment 1 is a body surface temperature cooling member (commercially available product: nap) only, and Experiment 2 is data covering the body surface temperature cooling member with a 3 mm thick cardboard knit (described in Japanese Patent Application Laid-Open No. 2002-10881 (Kanebo)). There is a cover (3 mm cardboard knit) between the body and the body surface temperature cooling member, so that the temperature of the back portion is increased by 0.5 to 1 ° C., and the bedding surface is also particularly high in the back portion. I understand that.

  From Experiment 1 and Experiment 2, as described in Paragraph [0023], by covering the body surface cooling member with a cover, the average temperature at the back is 1.4 ° C., and the average temperature is 0.9 ° C. at the surface of the bedding A difference is seen, and it turns out that a back surface temperature becomes high by covering with a cover, and a body surface temperature cooling member effect reduces.

Experiment 3 is data when the third opening is placed on the human body side, and Experiment 4 is data when the third opening is placed on the opposite side of the human body.
When the experiment 3 and the experiment 4 are compared, the temperature of the experiment 3 is generally higher than that of the experiment 4. The average temperature of the back is about 1.7 ° C higher in Experiment 3, and the surface of the bedding that the body is in contact with is about 0.5 ° C higher in Experiment 3 and the temperature range is wide.
In Experiment 3, although the wind hits the back from the third opening, the temperature is high because the entire bed is made uniform by the influence of the wind, and the surface where the body and the cover come into contact is difficult to cool. There is an increase in the temperature of the padded bedding under the flowable bedding 1.

On the other hand, in Experiment 4, the padding of the bedclothes continues to be cooled by the downward wind, and the temperature rise is suppressed, so that the temperature of the bedclothes does not increase and as a result, the temperature of the contact portion is low.
The stuffing of the bedclothes (elastic body) is elastic and has fine voids such as fiber cotton, urethane foam, foam rubber and the like. As for the heat retention of the bedding, the dead air trapped in the fine voids of these elastic bodies is warmed and the heat retention of the bedding is exhibited. In Experiment 4, it is considered that these dead airs are removed by flowing air to suppress the temperature rise of the elastic body and exhibit the effect of the body surface temperature cooling member.

The body surface temperature cooling member circulates a part of the air flowing in the body surface temperature cooling member on the side opposite to the side in contact with the body (abutment body side), and removes dead air in the body by the production heat. The temperature rise is suppressed, and the temperature rise of the part of the body that is in contact with the bed is suppressed, so that a comfortable sleep can be obtained.
Therefore, according to the present invention, the periphery of the body surface temperature cooling member is covered with an elastic cover, a comfortable sleeping ring can be obtained, and while keeping the weather in the bed, the temperature rise of the elastic body is suppressed, You can get a cool bedding that can handle.

Sectional drawing which shows the use condition of an air circulation type bedding. Sectional drawing of the body surface temperature cooling member of an air circulation type bedding. The perspective view of an air circulation type bedding. The chart which shows the air circulation type bedding ventilation method and the temperature-humidity difference in the bed. The thermography which looked at the sleeper's back surface and the surface temperature of a bedding after sleeping for 3 hours in an air circulation type bedding. The thermography which looked at the back surface of a sleeping person after sleeping for 3 hours on the air circulation type bedding with a cover, and the surface temperature of the bedding. The thermography which showed the surface temperature of the back of a sleeper and bedding when an opening part was put on the human body side. The thermography which showed the surface temperature of the back of a sleeper and bedding when an opening part was placed on the opposite side to a human body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air circulation type bedding 2 Mattress 3 Comforter 4 Sleeper 5 Body surface temperature cooling member 6 Air inlet 7 Air outlet 8 Fan 9 Front side 10 Back side 11 Bag 12 Spacer 13 Air flow passage 15 Opening

Claims (1)

A body surface temperature cooling device that circulates air lower than the body surface temperature in the vicinity of the body surface of the sleeping person and increases the temperature gradient in the vicinity of the body surface, and the body surface temperature cooling device is connected to the front and back of the bag body. via a spacer and that constitutes an air flow path having a flexible uneven surface between both sides ground has a constant height in succession, the air intake inlet and the air to both ends of the bag body into the air passage A discharge opening is provided, and a third opening for discharging the air in the bag body to the outside of the bag body is opened on the surface of the bag body opposite to the surface where the body surface of the sleeping person contacts the bag body. Air flow bedding.