JP7096541B2 - Mattress ventilation system and airflow control method - Google Patents

Description

The present invention relates to a mattress ventilation system and a method of controlling air volume.

The seven major factors required for an ideal mattress are (1) moderate heat retention (easy to adjust warmth) and (2) moderate moisture permeability (does not get stuffy even when sweating). (3) Good repulsive force (good turning ability), (4) Good body pressure dispersibility (moderate softness), (5) Low allergen (tick) (6) Easy to clean (strong against water and quick to dry), and (7) environmentally friendly (easy to recycle).

As a cushioning material for a mattress that can satisfy the above seven major elements at a high level, for example, a filament three-dimensional bond described in Patent Document 1 is known. According to Patent Document 1, after extruding a molten polyethylene resin vertically downward from a plurality of horizontally arranged nozzles, a molten filament having a diameter of about 1 mm is dropped into cooling water and melted by the buoyancy of water. It is disclosed that by forming a loop of filaments and at the same time forming a three-dimensional fusion bond between a plurality of molten filaments, an extremely airy filament three-dimensional bond having a porosity of more than 90% can be produced. There is.

The filament three-dimensional bond (that is, a cushion material for a mattress) is used as a mattress by mounting a cushion material cover (or a mattress pad) having optimum heat retention according to the season on the upper surface thereof. However, even if the mattress uses a well-ventilated three-dimensional filament composite as a cushion, the user will feel the heat and humidity when the temperature and humidity in the bedroom are high, and will wake up in the middle of the night (wake up halfway). There was a problem such as.

This problem is due to a physiological phenomenon in which a large amount of sweating is performed to lower the core body temperature when entering deep sleep (non-rem sleep). In particular, the amount of sweating is the highest at the time of the first transition to non-rem sleep immediately after falling asleep, and the higher the core body temperature and the deeper the sleep depth, the higher the quality of sleep. When the temperature rises, it becomes difficult for sweat to evaporate, and it becomes impossible to fall asleep deeply or to awaken halfway.

As a method to solve this problem, by using a comforter and a mattress (mattress pad) using a middle material with good hygroscopicity such as cotton, the water vapor generated by sweating is absorbed by the middle material of the comforter and the mattress, and it is in the bed. A method to prevent the humidity from becoming excessively high can be considered. However, in this case, in order to restore the hygroscopicity of the middle material, there are drawbacks such as the inconvenience of having to dry in the sun frequently and the tendency of mites to breed.

Further, as another method, for example, Patent Document 2 describes a method of lowering the temperature in the bedroom with an air conditioner so as not to feel the heat and humidity only during the time when the amount of sweating immediately after falling asleep is large. As yet another method, for example, in Patent Document 3, a sensor for detecting sweating is provided in clothes, sleep onset is determined by measuring the amount of sweating, and the room temperature after falling asleep is raised in order to prevent chilling. It is described that it is controlled so as to be controlled. As yet another method, for example, in Patent Document 4, in order to determine the sleep state by using a body movement sensor and to improve a good sleep and awakening, when the sleep depth is deep, the temperature of the futon is low and the sleep depth is shallow. It is described that the temperature of the futon is controlled to be high.

International Publication No. 2017/122370 Japanese Unexamined Patent Publication No. 7-71804 Japanese Unexamined Patent Publication No. 2001-78966 Japanese Unexamined Patent Publication No. 2017-211

However, in the method described in Patent Document 2, it is necessary to create a temperature control program for the air conditioner in advance, and the timing of the actual sleep depth change deviates from the created program (scheduled sleep depth change timing). If multiple people sleep in the same room with different timings of sleep depth changes, it will not be possible to provide a comfortable temperature and humidity environment for all. There is.

The method described in Patent Document 3 has a problem that it is troublesome to attach the sweat sensor to clothes. Furthermore, there is a problem that the person feels hot and humid when a large amount of sweating occurs in the process of deepening the sleep depth immediately after falling asleep.

In the method described in Patent Document 4, the temperature inside the futon is controlled to be high when the sleep depth is shallow. Therefore, in the early stage of the process of deepening the sleep depth immediately after falling asleep (when the sleep depth is shallow), there are problems such as feeling hot and humid when a large amount of sweating occurs, and conditions that do not require temperature adjustment inside the futon (conditions that do not require temperature adjustment inside the futon). When the air blow is stopped when the temperature and humidity inside the futon are within a predetermined range, there is a problem that the moisture adsorbed on clothes and bedding does not diffuse due to sweating, and the person feels hot and humid.

Further, those described in Patent Documents 2 and 3 regulate the temperature and humidity in the room so as to be suitable for sleep, and there is no idea that the condition of the bedding itself covering the human body is regulated. On the other hand, what is described in Patent Document 4 is different from those described in Patent Documents 2 and 3 in that the temperature and humidity of the bedding itself are adjusted so as to be suitable for the sleeping state. However, the one described in Patent Document 4 also forcibly sets the temperature and humidity so that the external environment closest to the human body is suitable for the sleep state, and the heat generated by the human body itself according to the sleep state, There was no idea of using moisture to control the ventilation in the bedding so that the condition of the bedding was suitable for sleep.

In addition, in general bedding (futons, mattresses or mattresses), the ventilation is low (not well ventilated) to ensure a certain degree of heat retention, so it is close to the air outlet and far from the air outlet. There is a problem that it is difficult to uniformly adjust the temperature and humidity in the bed because the temperature and humidity difference is likely to occur in the place. On the contrary, if an attempt is made to increase ventilation, the heat retention property is impaired, and when the wind directly hits the body, there is a problem that the person feels tired when waking up. Furthermore, in the process of deepening sleep depth, that is, in the process of lowering the core body temperature, the method of simply lowering the temperature in the bed lowers the body temperature without sweating, which weakens the physiological function of the person. There was a possibility that it would end up. Moreover, in a system that generates wind in a mattress, there has never been an idea of controlling the air volume in consideration of both temperature and humidity in addition to the sleep depth, and there is room for improvement in particular regarding the air volume control.

In view of the above problems, the present invention makes it possible to appropriately control the ventilation in the bedding so that the state of the bedding is suitable for sleep by utilizing the heat and moisture generated by the human body itself according to the sleep state. The purpose is to provide a system and a method for controlling air volume.

The mattress ventilation system according to the present invention is a mattress ventilation system that controls the state of the mattress by the wind generated in the mattress, and has a sleep information acquisition unit that acquires information on the sleep depth of the user of the mattress, and the above-mentioned. An air volume control unit for controlling the air volume in the mattress is provided, and the air volume control unit is configured to increase the air volume in the period when the sleep depth is deep compared to the period when the sleep depth is shallow.

More specifically, as the above configuration, a mattress information acquisition unit that acquires at least humidity information of the mattress that reflects the humidity around the user is provided, and the air volume control unit is based on at least the humidity information. The configuration may be such that the air volume is controlled. More specifically, as the above configuration, the mattress information acquisition unit also acquires the temperature information of the mattress, and the air volume control unit controls the air volume based on the humidity information and the temperature information. May be. More specifically, as the above configuration, the mattress information acquisition unit uses a sensor provided near the upper surface portion of the mattress near the body surface of the user to obtain at least one of the humidity information and the temperature information. It may be a configuration to be acquired.

More specifically, as the above configuration, the air volume control unit controls the air volume based on the calculation result using the calculation formula using the temperature information and the humidity information as parameters, and the calculation formula. Is set so that the higher the temperature, the larger the air volume, and the higher the humidity, the larger the air volume, and the sleep depth is updated when the predetermined condition is satisfied. good. According to this configuration, it becomes easy to realize air volume control in consideration of temperature and humidity in a well-balanced manner.

More specifically, the air volume control unit may recognize each timing in the vicinity of each peak of the sleep depth and update the calculation formula each time each of the timings arrives. good. According to this configuration, it becomes easier to control the more ideal air volume by using the calculation formulas adapted to each of the hyperhidrosis period and the low sweat period.

More specifically, as the above configuration, the sleep information acquisition unit includes a body motion detection sensor that detects the body motion of the user, and obtains information on the sleep depth based on the detection result of the body motion detection sensor. It may be a configuration to be acquired.

More specifically, as the above configuration, the mattress is provided with a wind generating unit that generates wind, and the wind generating unit includes a wind guide tube that extends in the substantially height direction and has a plurality of ventilation holes. The wind is generated by sending air into the air duct or sucking air from the air duct, and the ventilation hole has a larger air volume in the body portion than in the leg corresponding portion. The configuration may be formed so as to increase the number. According to this configuration, the air volume is larger on the body-corresponding part side where the user's sweating amount is expected to be relatively large than on the leg-corresponding part side where the user's sweating amount is expected to be relatively small, and the efficiency is increased. Good ventilation is possible.

Further, more specifically, as the above configuration, the ventilation holes are arranged so as to be lined up along the extending direction of the air guide pipe, and are arranged in the body portion corresponding portion rather than the portion corresponding to the leg portion corresponding portion. The corresponding portions may be arranged so that the intervals are narrower.

More specifically, as the above configuration, the mattress information acquisition unit includes a plurality of temperature / humidity sensors, and information on the highest temperature and humidity among the temperatures and humidity detected by each of the plurality of temperature / humidity sensors can be obtained. It may be configured to be acquired as information used for controlling the air volume. According to this configuration, even if the user (sleeping person) moves by turning over, the air volume can be controlled using the temperature information and humidity information of the temperature / humidity sensor that is most strongly affected by the user's body temperature and sweating. , It is possible to control the air volume at a temperature and humidity that are closer to the user's experience.

Further, more specifically, the above-mentioned configuration may be such that the operation of generating wind in the wind generation unit is performed intermittently. According to this configuration, since a fast wind flow can be temporarily created, the diffusion effect of the moisture held in the clothes or the cushion material cover can be enhanced. In particular, the moisture once held in the clothes and cushion material cover is difficult to diffuse, but by doing so, the diffusion force of water vapor is increased by the fast wind for a short time without excessively increasing the air volume per unit time. As the amount increases, sweat is quickly diffused, the temperature and humidity in the bed are suppressed from rising excessively, and a comfortable humidity in the bed can be maintained.

More specifically, the mattress information acquisition unit may be configured to acquire the temperature information and the humidity information when the operation of generating the wind is stopped. According to this configuration, the influence of wind on the temperature and humidity detection accuracy is suppressed, and it becomes easy to acquire temperature and humidity information with as high accuracy as possible.

More specifically, the mattress ventilation system having the mattress includes a cushion material having ventilation and a cushion material cover provided on at least the upper surface of the cushion material, and the cushion. The material cover has a breathability of 10 cm ³ / cm ² · s or more and 200 cm ³ / cm ² · s or less as measured by the breathability measurement method according to JIS L 1096-1999 8.27.1 A method. It may be configured as follows. According to this configuration, the wind speed is relaxed without impairing the diffusivity of water vapor by the cushioning material cover having appropriate air permeability, and the temperature and humidity feeling in the part where the wind speed is high and the temperature felt in the part where the wind speed is slow on the skin surface. The difference from the feeling of humidity can be reduced.

More specifically, as the above configuration, the mattress that supports the user on the upper surface has a cushion material having ventilation and a cushion material cover that covers the cushion material, and at least the upper surface of the cushion material cover. A part of the air permeability may be higher than the air permeability of the side surface of the cushion material cover. According to this configuration, since the air permeability of the upper surface of the cushion material cover is high, the water vapor due to the sweating of the user is quickly diffused inside the mattress, and at the same time, the air volume is near the upper surface of the cushion material cover that supports the user. Can be sent efficiently without excessively increasing the air pressure. As a result, the water vapor staying in the cushion material cover is diffused by the wind (air flow) guided near the upper surface of the cushion material cover in contact with the user, and is discharged to the outside of the mattress.

Further, the air volume control method according to the present invention is a method for controlling the air volume of a wind generator that generates wind in a mattress, and includes a sleep information acquisition step for acquiring information on the sleep depth of the mattress user and the above-mentioned. The control method includes a temperature / humidity information acquisition step for acquiring information on the temperature and humidity of the mattress, and a control step for controlling the air volume based on the sleep depth, the temperature, and the humidity.

Further, the mattress ventilation system according to the present invention includes a mattress that supports the user on the upper surface, a temperature / humidity information acquisition unit that acquires information on the temperature and humidity of the mattress, and a wind generation unit that generates wind in the mattress. The mattress includes a cushioning material having ventilation and a cushioning material cover covering the cushioning material, and the mattress includes a cushioning material covering the cushioning material, and the air permeability of the upper surface of the cushioning material cover. However, the configuration is higher than the air permeability of the side surface.

According to this configuration, since the air permeability of the upper surface of the cushion material cover is high, the water vapor due to the sweating of the user is quickly diffused inside the mattress, and at the same time, the air volume is near the upper surface of the cushion material cover that supports the user. Can be sent efficiently without excessively increasing the air pressure. As a result, the water vapor staying in the cushion material cover is diffused by the wind (air flow) guided near the upper surface of the cushion material cover in contact with the user, and is discharged to the outside of the mattress.

According to the mattress ventilation system and the air volume control method according to the present invention, the ventilation in the bedding is appropriately controlled so that the state of the bedding is suitable for sleep by utilizing the heat and moisture generated by the human body itself according to the sleep state. It becomes possible to do.

It is a block diagram of the mattress ventilation system 1 which concerns on 1st Embodiment. It is a perspective view of the mattress ventilation system 1. It is a front view of the mattress ventilation system 1. It is a top view of the mattress ventilation system 1. It is a perspective view of the air guide tube 7 shown in FIG. It is a graph about the change state of each item at the time of using a mattress ventilation system 1. It is a flowchart about the operation of a mattress ventilation system 1. It is a block diagram of the mattress ventilation system 101 which concerns on 2nd Embodiment. It is a top view of the mattress ventilation system 101. It is a block diagram of the mattress ventilation system 201 which concerns on 3rd Embodiment. It is a front view of the mattress ventilation system 201. It is a perspective view of the mattress ventilation system 201 of another form.

Each of the first to third embodiments will be described as an example of the embodiment of the present invention with reference to the drawings. The vertical, horizontal, and front-back directions (directions orthogonal to each other) in the following description are as shown in each figure.

1. 1. First Embodiment First, the first embodiment will be described. FIG. 1 is a block diagram of the mattress ventilation system 1 according to the first embodiment. FIG. 2 is a perspective view of the mattress ventilation system 1. FIG. 3 is a front view of the mattress ventilation system 1. FIG. 4 is a top view of the mattress ventilation system 1. Further, FIG. 5 is a perspective view of the air duct 7 shown in FIG. In FIG. 3, in order to make it easier to understand the usage pattern of the system 1, the users, pillows, and comforters using the system 1 are shown by dotted lines.

As shown in FIG. 1, the mattress ventilation system 1 includes a bed unit 10, a wind generation unit 20, and an information processing unit 30. Further, as shown in FIGS. 1 to 4, the bed portion 10 includes a bed 2, a lower mattress 3, an upper mattress 4, 3 body motion detection sensors 5a to 5c, and 3 temperature / humidity detection sensors 6a to 6c. include.

The bed 2 is a flat bed that supports each of the mattresses 3 and 4 from below, and a headboard 2a is provided on the head side of the sleeping person. The lower mattress 3 and the upper mattress 4 each have a cushion material and a cushion material cover that covers the entire outer peripheral surface including the upper surface of the cushion material. The lower mattress 3 is installed on the upper surface of the bed 2, and the upper mattress 4 is installed on the upper surface of the lower mattress 3. Each of the mattresses 3 and 4 is a mattress whose vertical direction is the thickness direction, and the front-rear direction is the longitudinal direction (corresponding to the height direction of the user sleeping on the mattress). When the mattress ventilation system 1 is used, the user will lie on the upper mattress 4 with his head facing forward and his feet facing backward, as shown in FIG.

As the cushion material used for each of the mattresses 3 and 4, a member having excellent ventilation is preferable. For example, even when the cushion material is placed in front of the electric fan, the wind passing through the cushion material blows the balloon. It is preferable to have a ventilation property that can maintain the flow velocity. The cushioning material of the present embodiment is a three-dimensional filament having a porosity of 95%, which is obtained by three-dimensionally fusion-bonding a plurality of molten filaments made of a thermoplastic resin containing polyethylene as a main component and having a diameter of about 1 mm. You are using a bond.

As the cushion material cover used for each mattress 3 and 4, a breathable fabric is preferable, and an appropriate breathability measuring method according to JIS L 1096-1999 8.27.1 A method (Frazier type method) is used. The measured air permeability is preferably 10 cm ³ / cm ² · s or more and 200 cm ³ / cm ² · s or less, and 20 cm ³ / cm ² · s or more and 100 cm ³ / cm ² · s or more. The following is more preferable. Unless otherwise specified, the specific value of the air permeability in the following description is also measured by an appropriate air permeability measuring method according to JIS L 1096-1999 8.27.1 A method (Frazil type method). Indicates the value of air permeability. If the air permeability is too low, the diffusivity of the water vapor in the cushion material cover generated by sweating decreases, and conversely, if the air permeability is too high, the wind flow is difficult to be relaxed, and the wind generated by the wind generation unit 20 is generated. The difference between the temperature felt in the part where the wind speed is high and the temperature felt in the part where the wind speed is slow on the skin surface becomes large, such as feeling cold (decreased heat retention) in the part directly hitting the sleeping person, and unevenness in heat retention occurs. .. In that respect, if the cushion material cover having appropriate air permeability is used, the wind speed is alleviated without impairing the diffusivity of water vapor, and the temperature and humidity feeling felt in the part where the wind speed is high and the part where the wind speed is slow on the skin surface. It is possible to reduce the difference from the feeling of temperature and humidity felt in.

The three body motion detection sensors 5a to 5c are acceleration sensors, which are arranged side by side between the cushion material and the cushion material cover on the upper surface side of the upper mattress 4, and are arranged side by side to prevent the user (sleeper) from turning over. Detect body movements. In the present embodiment, the acceleration sensor is used as the body motion detection sensor, but another sensor capable of detecting the body motion may be used. As will be described later, the body movement detection result is used to acquire information on the sleep depth of the user. Therefore, instead of the body motion detection sensor, another means that can acquire the sleep depth of the user may be adopted. For example, a means for detecting the movement of the user using an infrared camera may be adopted, and information on the sleep depth may be acquired based on the frequency of the movement. Further, a means for measuring the heart rate of the user using a heart rate sensor may be adopted, and information on the sleep depth may be acquired based on the heart rate.

The three temperature / humidity detection sensors 6a to 6c are sensors for detecting temperature and humidity, and detect the temperature and humidity in the upper mattress 4. In the present embodiment, the temperature / humidity detection sensors 6a to 6c are arranged side by side between the cushion material and the cushion material cover on the upper surface side of the upper mattress 4. In this way, the temperature / humidity detection sensors 6a to 6c are arranged at positions that are as susceptible to the influence as possible so that the change in temperature and humidity due to the influence of sweating and body temperature of the user (sleeping person) can be detected with high sensitivity. There is. As a result, even if the user moves by turning over, the air volume can be controlled using the temperature information and humidity information of the temperature / humidity detection sensor, which is most strongly affected by the user's body temperature and sweating, so that the user can experience more. It is possible to control the air volume at a temperature and humidity close to.

The wind generation unit 20 includes a wind guide tube 7, a fan 8, and a fan drive unit 9. The air guide pipe 7 is a substantially cylindrical member that guides wind from the inside to the outside or from the outside to the inside of the upper mattress 4, and is provided between the lower mattress 3 and the upper mattress 4.

As shown in FIG. 5, the air guide tube 7 is a hollow tube having a head ventilation hole 7a, a connecting opening 7b, and an intermediate ventilation hole 7c to 7j, and is made of a flexible silicone resin. The air guide pipe 7 is arranged so as to extend in the front-rear direction, has a head ventilation hole 7a at the front end, and has a connecting opening 7b at the rear end. The connecting opening 7b is connected to a fan 8 installed on the rear side of the central portion of the rear end of the upper mattress 4. The wind generation unit 20 can generate wind (air flow) in the upper mattress 4 by sending air into the air duct 7 using the fan 8 or sucking air from the air duct 7. ..

The air duct 7 extends forward from the position connected to the fan 8, passes through the lower side of the leg corresponding portion and the lower side of the body corresponding portion of the upper mattress 4 in order, and is in the vicinity of the head corresponding portion. It extends to. The leg-corresponding part is the part of the upper mattress 4 that roughly corresponds to the leg of the user lying on the upper mattress 4, and the body-corresponding part is the upper mattress that roughly corresponds to the user's torso. The part corresponding to the head is the part of the upper mattress 4 corresponding to the head of the user.

The head ventilation hole 7a is open toward the front and plays a role of generating wind mainly in the vicinity of the head corresponding portion. Each of the intermediate ventilation holes 7c to 7j is a hole of the same size, and is provided so as to be lined up in the front-rear direction on the side portion of the air guide pipe 7. Further, each of the intermediate ventilation holes 7c to 7j is opened upward so that the upper mattress 4 can efficiently generate wind. Of the intermediate ventilation holes 7c to 7j, the intermediate ventilation holes 7c to 7f are arranged in the portion corresponding to the body corresponding portion, and the intermediate ventilation holes 7h to 7j are arranged in the portion corresponding to the leg corresponding portion. .. The intermediate ventilation holes 7c to 7f mainly play a role of generating wind in the body corresponding portion, and the intermediate ventilation holes 7h to 7j play a role of mainly generating wind in the leg corresponding portion.

The intermediate ventilation holes 7h to 7j are formed so that the air volume in the body corresponding portion is larger than that in the leg corresponding portion. More specifically, the arrangement interval of the intermediate ventilation holes 7c to 7f is narrower than the arrangement interval of the intermediate ventilation holes 7h to 7j, and the body corresponding portion is per unit length in the ventilation pipe 7. The number of intermediate ventilation holes in is increasing. As a result, when the fan 8 generates wind, the air volume in the body portion corresponding portion is larger than that in the leg portion corresponding portion. The mechanism for increasing the air volume in the body portion corresponding to the leg portion is not limited to the above, and for example, when the arrangement interval of the intermediate ventilation holes 7c to 7j is constant, the intermediate ventilation holes 7c A mechanism or the like that makes the size of about 7f larger than that of the intermediate ventilation holes 7h to 7j can be adopted.

As described above, in the present embodiment, the air volume is larger on the body-corresponding part side where the user's sweating amount is expected to be relatively large than on the leg-corresponding part side where the user's sweating amount is expected to be relatively small. , Efficient ventilation is realized. Further, in the present embodiment, one linear hollow pipe is used as the air guide pipe 7, but a hollow pipe branched in the middle or a plurality of hollow pipes fixed in the horizontal direction are used. You may use it.

The fan 8 is a blower having a rotary blade having a diameter of 8 cm and is connected to the connecting opening 7b. The fan drive unit 9 has a motor for driving the fan 8 and rotates the fan 8 at a rotation speed (rotational speed) determined by the air volume control unit 16. As a result, the wind generation unit 20 generates an air volume corresponding to the rotation speed, and sends the air in the bedroom (the room in which the bed unit 10 is installed) corresponding to the outside of the upper mattress 4 into the upper mattress 4. , The air in the upper mattress 4 can be exhausted into the bedroom. The air in the upper mattress 4 is ventilated with the outside air regardless of whether the outside air is sent into the upper mattress 4 or the air in the upper mattress 4 is discharged to the outside.

The information processing unit 30 includes a sleep information acquisition unit 14, a temperature / humidity information acquisition unit 15, and an air volume control unit 16, and generates wind based on the detection results of the body motion detection sensors 5a to 5c and the temperature / humidity detection sensors 6a to 6c. It plays a role of controlling the strength (air volume) of the wind generated by the unit 20. The information processing unit 30 includes a CPU (central processing unit), RAM (random access memory), and ROM (read-only memory), and operates according to predetermined software stored in the ROM to obtain each of the above functions. Units (14-16) are realized. However, the specific form of each of the functional units (14 to 16) is not particularly limited, and all or part of the functional units may be realized by a dedicated circuit.

The sleep information acquisition unit 14 calculates the body movement frequency (the number of appearances per unit time of the body movement that exceeds the predetermined acceleration) from the acceleration information sent from the body movement detection sensors 5a to 5c at predetermined time intervals. And acquire the sleep depth information for air volume control. Regarding the sleep depth, it is judged that the sleep depth is shallower as the body movement frequency is higher, and that the sleep depth is deeper as the body movement frequency is lower. In this embodiment, as an example, information on the sleep depth can be obtained by estimating the sleep depth of the five stages from the body movement frequency divided into the five stages.

The temperature / humidity information acquisition unit 15 identifies the highest value temperature information and humidity information from the temperature information and humidity information continuously sent from the three temperature / humidity detection sensors 6a to 6c, and this identification is performed. Each of the obtained information is acquired as temperature information and humidity information for air volume control. It can be said that the temperature information and humidity information for air volume control acquired in this way are the information detected by the three temperature / humidity detection sensors 6a to 6c that are most strongly affected by the body temperature and sweating of the sleeping person. .. Therefore, in the present embodiment, it is possible to control the air volume based on the temperature and humidity information that is closer to the feeling of the sleeping person. The temperature information and humidity information acquired by the temperature / humidity information acquisition unit 15 are sent to the air volume control unit 16.

The air volume control unit 16 adjusts the rotation speed of the fan 8 based on each information received from the sleep information acquisition unit 14 and the temperature / humidity information acquisition unit 15, and thereby the wind strength (air volume) generated by the wind generation unit 20. To control. The operation of the air volume control unit 16 will be described below with reference to FIG.

FIG. 6 graphically shows an example of the change status of each item when the mattress ventilation system 1 is used. In FIG. 6, the horizontal axis indicates the elapsed time since the start of use of the mattress ventilation system 1, and the vertical axis indicates the sleep depth of the user, the amount of sweating of the user, and the fan 8 in order from the graph above. It shows the number of revolutions and the core body temperature of the user, respectively.

Generally, the existence of a sleep rhythm is known regarding the sleep depth of a sleeping person. In this sleep rhythm, as illustrated in the graph of FIG. 6, the sleep cycle from a shallow sleep state to a deep sleep state and then to a shallow sleep state is repeated. Regarding the amount of sweating, the amount of sweating tends to be relatively large when the sleep depth changes from a shallow state to a deep state, and the sweating amount tends to be relatively small when the sleep depth changes from a deep state to a shallow state. It is in. In addition, the core body temperature of the sleeping person drops relatively greatly in the period when the sleep depth first becomes deep (descent period), and the fluctuation becomes relatively small in the subsequent stable period.

The timing t1 shown in FIG. 6 is a timing near the time when the sleep depth is first deepest (the first peak time P1 on the deep side shown in FIG. 6), and in the present embodiment, the peak time P1 It is the timing when the sleep depth begins to become shallow. The timing t2 shown in FIG. 6 is a timing near the time when the sleep depth gradually becomes shallower from the timing t1 and becomes the shallowest (the first peak time P2 on the shallow side shown in FIG. 6), and is the timing in the present embodiment. , The timing when the sleep depth starts to deepen from P2 at the peak time is shown. The timing t3 shown in FIG. 6 is a timing near the time when the sleep depth gradually becomes deeper from the timing t2 and becomes the deepest (the second peak time P3 on the deep side shown in FIG. 6), and in the present embodiment, it is the timing. , The timing when the sleep depth starts to become shallow from P3 at the peak time is shown. The timing t4 shown in FIG. 6 is a timing near the time when the sleep depth gradually becomes shallower from the timing t3 and becomes the shallowest (the second peak time P4 on the shallow side shown in FIG. 6), and is the timing in the present embodiment. , The timing when the sleep depth starts to deepen from P4 at the peak time is shown. The timing t5 shown in FIG. 6 is a timing near the time when the sleep depth gradually becomes deeper from the timing t4 and becomes the deepest (the third peak time P5 on the deep side shown in FIG. 6), and in the present embodiment, it is a timing. , The timing when the sleep depth starts to become shallow from P5 at the peak time is shown.

The air volume control unit 16 controls the air volume in consideration of the sleep rhythm and the sweating amount described above. Hereinafter, this point will be described more specifically.

The air volume control unit 16 recognizes each timing t1 to t5 according to a predetermined rule. That is, the air volume control unit 16 recognizes the timing when the sleep depth falls below the previous stage (the sleep depth becomes shallow) for the first time after the start of the sleep depth information acquisition as the timing t1. Further, the air volume control unit 16 recognizes the timing when the sleep depth exceeds the previous stage (the sleep depth becomes deeper) for the first time after the timing t1 as the timing t2. Further, the air volume control unit 16 recognizes the timing when the sleep depth falls below the previous stage for the first time after the timing t2 as the timing t3. Further, the air volume control unit 16 recognizes the timing when the sleep depth exceeds the previous stage for the first time after the timing t3 as the timing t4. Further, the air volume control unit 16 recognizes the timing when the sleep depth falls below the previous stage for the first time after the timing t4 as the timing t5.

However, the above-mentioned rule for recognizing each timing is an example, and the timing t1 may be recognized according to another rule so that the timing is in the vicinity of the peak time P1. Similarly, the timing t2 is the timing near the peak time P2, the timing t3 is the timing near the peak time P3, and the timing t4 is the timing near the peak time P4. t5 may be recognized according to other rules so that the timing is near the peak time P5. It is desirable that the range of "neighborhood" here is a range in which the difference from the corresponding peak time is approximately 1/4 or less of the cycle of the sleep cycle (about 90 minutes). It is generally known that the average sleep cycle is about 90 minutes, but since there are individual differences, the sleep cycle of each person is continuously measured and adjusted to the sleep cycle of each person. It is preferable to correct it.

Further, the period from the time of falling asleep to the timing t1 (hereinafter, may be referred to as "first hyperhidrosis period X1") and the period from timing t2 to timing t3 (hereinafter, referred to as "second hyperhidrosis period X2"). The period from timing t4 to timing t5 (hereinafter, may be referred to as "third hyperhidrosis period X3") is a period in which the amount of sweating by the user is large (many), as shown in FIG. Sweat period). Further, a period from timing t1 to timing t2 (hereinafter, may be referred to as "first low sweat period Y1") and a period from timing t3 to timing t4 (hereinafter, referred to as "second low sweat period Y2"). (May be) is a period (hypohidrosis period) in which the amount of sweating by the user is small, as shown in FIG.

Further, the arithmetic control unit 30 stores the following information of the first to sixth equations.
First formula: Fan rotation speed for the first hyperhidrosis period Na (rpm) = 40 x (T-25) + 4 x (H-40)
Equation 2: Fan rotation speed for the first low sweat period Nb (rpm) = 10 x (T-25) + 1 x (H-40)
Equation 3: Fan rotation speed for the second hyperhidrosis period Nc (rpm) = 30 x (T-25) + 3 x (H-40)
Equation 4: Fan rotation speed for the second low sweat period Nd (rpm) = 7 x (T-25) + 0.7 x (H-40)
Equation 5: Fan rotation speed for the third hyperhidrosis period Ne (rpm) = 20 x (T-25) + 2 x (H-40)
Equation 6: Fan rotation speed for stable period Nf (rpm) = 3 x (T-25) + 0.3 x (H-40)
However, T represents temperature (° C.) (value of temperature information for air volume control acquired by temperature / humidity information acquisition unit 15), and H represents humidity (%) (air volume control acquired by temperature / humidity information acquisition unit 15). Humidity information value for).

In each of the above equations 1 to 6, the fan 8 having a high correlation with the air volume (ventilation volume) of the appropriate wind generation unit 20 from each information received from the sleep information acquisition unit 14 and the temperature / humidity information acquisition unit 15. It is a calculation formula set in advance for calculating the number of rotations. Both formulas are set in consideration of the tendency of the amount of sweating in the corresponding period. For example, the first formula is the optimum calculation formula in consideration of the tendency of the amount of sweating in the first hyperhidrosis period X1. It is set to be. Further, as is clear from the contents of each equation, in each of the equations 1 to 6, the higher the temperature T, the higher the rotation speed (more air volume), and the higher the humidity H, the higher the rotation speed. It is set to be (large air volume).

The air volume control unit 16 calculates the fan rotation speed Na for the first hyperhidrosis period based on the first equation in the first hyperhidrosis period X1 and the period before this, and the calculation result is the rotation speed of the fan 8. To be determined as. Further, the air volume control unit 16 calculates the fan rotation speed Nb for the first low sweat period based on the second equation in the first low sweat period Y1, and determines this calculation result as the rotation speed of the fan 8. Further, the air volume control unit 16 calculates the fan rotation speed Nc for the second hyperhidrosis period based on the third equation in the second hyperhidrosis period X2, and determines this calculation result as the rotation speed of the fan 8. Further, the air volume control unit 16 calculates the fan rotation speed Nd for the second low sweat period based on the fourth equation in the second low sweat period Y2, and determines this calculation result as the rotation speed of the fan 8. Further, the air volume control unit 16 calculates the fan rotation speed Ne for the third hyperhidrosis period based on the fifth equation in the third hyperhidrosis period X3, and determines this calculation result as the rotation speed of the fan 8. Further, the air volume control unit 16 calculates the fan rotation speed Nf for the stable period based on the sixth equation in the period after the third hyperhidrosis period X3, and determines this calculation result as the rotation speed of the fan 8.

Each time the air volume control unit 16 determines the rotation speed of the fan 8 as described above, the air volume control unit 16 sends the latest information on the rotation speed to the fan drive unit 9. The fan drive unit 9 rotates the fan 8 at the latest rotation speed based on the received information. As a result, the air volume of the wind generating unit 20 is appropriately controlled, and the diffusion speed (exhaust speed) of the water vapor generated by sweating can be increased according to the sweating amount. That is, by increasing the air volume, the air stirring effect inside the cushion material cover fabric is enhanced, and the water vapor (high humidity air) staying in the internal space of the cushion material cover fabric is quickly diffused and discharged to the outside of the upper mattress 4. Therefore, it is possible to reduce the heat and humidity without excessively lowering the temperature and humidity in the bedroom or the bed even during a time when the amount of sweating is high.

The mattress ventilation system 1 is preferably used under conditions where the temperature and humidity in the bedroom are constant (for example, the temperature is 20 ° C. and the humidity is 40%) by using an air conditioner, but in the bedroom. When the temperature and humidity of the room change, it is preferable to correct the fan rotation speed according to the temperature and humidity in the bedroom. As an example of the correction method, the temperature and humidity in the room are divided into about 5 stages so that the user can select them by dialing according to the season, and the information of the temperature and humidity sensor that measures the temperature and humidity in the bedroom is used. There is a method of acquiring and correcting.

In the present embodiment, the fan rotation speed is uniquely calculated from the temperature information and the humidity information by using each of the above-mentioned first to sixth equations consisting of simple linear equations. The formula is an example, and it is desirable that the formula and the coefficient are set according to the ability of the wind generator 20 and the amount of metabolism of the user. Further, in the present embodiment, the fan rotation speed (air volume) until awakening immediately after bedtime (until REM sleep) is controlled by using the first equation for the first hyperhidrosis period X1. This is because it is assumed that the temperature and humidity in the upper mattress 4 will rise remarkably immediately after going to bed. Instead of using the first equation for the first hyperhidrosis period X1 in this way, a control equation dedicated to this period may be set.

Further, in the above embodiment, the fan 8 is rotated at a constant rotation speed determined by the air volume control unit 16, but the wind speed may be adjusted so that the air volume per unit time does not change. Often, the wind may be generated intermittently (the operation of the wind generating unit 20 to generate the wind is performed intermittently) so that the air volume per unit time does not change. By doing so, it is possible to temporarily create a fast wind flow, so that the diffusion effect of the moisture held in the clothes or the cushion material cover can be enhanced. In particular, the moisture once held in the clothes and cushion material cover is difficult to diffuse, but by doing so, the diffusion force of water vapor is increased by the fast wind for a short time without excessively increasing the air volume per unit time. As the amount increases, sweat is quickly diffused, the temperature and humidity in the bed are suppressed from rising excessively, and a comfortable humidity in the bed can be maintained.

Further, when the operation of generating the wind of the wind generating unit 20 is to be performed intermittently, the temperature / humidity information acquisition unit 15 acquires information on the temperature and humidity when the operation of generating the wind is stopped. You may do so. By doing so, it becomes easy to suppress the influence of the wind on the temperature and humidity detection accuracy and to acquire the temperature and humidity information with the highest possible accuracy.

Next, a specific example of the operation flow of the mattress ventilation system 1 will be described below with reference to the flowchart shown in FIG. 7.

The mattress ventilation system 1 is provided with a power switch (not shown), and the power can be switched on / off by the operation of the user or the like. Normally, the system 1 is turned off to save power when not in use, and the power is turned on when the system is in use (when the user goes to bed).

When the power is turned on by the user or the like (step S1), the mattress ventilation system 1 shifts to the power on state, the sleep information acquisition unit 14 starts acquiring sleep depth information, and temperature / humidity information. Acquisition of temperature information and humidity information by the acquisition unit 15 is started (step S2). After that, real-time sleep depth information, temperature information, and humidity information are sequentially and continuously acquired. The mattress ventilation system 1 has a sleeper when a predetermined set time (for example, a scheduled bedtime) arrives, or based on the detection result of a part or all of each sensor (5a to 5c, 6a to 6c). When is detected, the power may be automatically switched to the power-on state.

Immediately after the mattress ventilation system 1 shifts to the power-on state, the driving of the fan 8 using the first equation is started (step S3). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 obtains the latest fan rotation speed Na for the first hyperhidrosis period based on this information and the first equation. calculate. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Na for the first hyperhidrosis period. The driving of the fan 8 using the first equation is executed until the transition to the first hypohidrosis period Y1 (in other words, until the timing t1 arrives).

On the other hand, when the first low sweat period Y1 is entered (Yes in step S4), the driving of the fan 8 using the second equation is started (step S5). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 obtains the latest fan rotation speed Nb for the first low sweat period based on this information and the second equation. calculate. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Nb for the first low sweat period. The driving of the fan 8 using the second equation is executed until the transition to the second hyperhidrosis period X2 (in other words, until the timing t2 arrives).

On the other hand, when the second hyperhidrosis period X2 is entered (Yes in step S6), the driving of the fan 8 using the third equation is started (step S7). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 obtains the latest fan rotation speed Nc for the second hyperhidrosis period based on this information and the third equation. calculate. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Nc for the second hyperhidrosis period. The driving of the fan 8 using the third equation is executed until the transition to the second low sweat period Y2 (in other words, until the timing t3 arrives).

On the other hand, when the second low sweat period Y2 is entered (Yes in step S8), the driving of the fan 8 using the fourth equation is started (step S9). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 obtains the latest fan rotation speed Nd for the second low sweat period based on this information and the fourth equation. calculate. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Nd for the second low sweat period. The driving of the fan 8 using the fourth equation is executed until the transition to the third hyperhidrosis period X3 (in other words, until the timing t4 arrives).

On the other hand, when the third hyperhidrosis period X3 is entered (Yes in step S10), the driving of the fan 8 using the fifth equation is started (step S11). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 obtains the latest fan rotation speed Ne for the third hyperhidrosis period based on this information and the fifth equation. calculate. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Ne for the third hyperhidrosis period. The driving of the fan 8 using the fifth equation is executed until the third hyperhidrosis period X3 ends (in other words, until the timing t5 arrives).

On the other hand, when the third hyperhidrosis period X3 ends (Yes in step S12), the driving of the fan 8 using the sixth equation is started (step S13). More specifically, each time the latest temperature and humidity information is acquired, the air volume control unit 16 calculates the latest stable fan rotation speed Nf based on this information and the sixth equation. Then, the fan drive unit 7 drives the fan 8 so as to rotate at the fan rotation speed Nf for the stable period.

The driving of the fan 8 using the sixth equation is executed until the user or the like performs an operation of turning off the power. Normally, the power is turned off by the user when waking up. When the power-off operation is performed (Yes in step S14), the drive of the fan 8 is stopped, and the mattress ventilation system 1 shifts to the power-off state. The mattress ventilation system 1 is absent of a sleeping person when a predetermined set time (for example, scheduled wake-up time) arrives, or based on the detection result of a part or all of each sensor (5a to 5c, 6a to 6c). When is detected, the power may be automatically turned off.

As described above, the mattress ventilation system 1 has a sleep information acquisition unit 14 that acquires information on the sleep depth of the user of the upper mattress 4, and a temperature / humidity information acquisition unit that acquires information on the temperature and humidity of the upper mattress 4. A wind generation unit 20 that generates wind in the upper mattress 4 and an air volume control unit 16 that controls the air volume of the wind generation unit 20 are provided. Further, the air volume control unit 16 controls the air volume based on the sleep depth, the temperature, and the humidity. Therefore, according to the mattress ventilation system 1, even if the temperature / humidity in the room or the amount of sweating after falling asleep changes, it is possible to quickly diffuse the water vapor due to sweating by the wind and discharge it to the outside of the upper mattress 4. ..

According to the mattress ventilation system 1, the sleep depth is shallow because the air volume of the wind in the upper mattress 4 is controlled by using the sleep information including the change in the sleep depth as well as the temperature information and the humidity information in the upper mattress 4. A large amount of wind can be sent into the mattress at the timing when the amount of sweating increases, such as when transitioning from a state to a deep state, and the water vapor generated by sweating can be quickly diffused and discharged to the outside of the upper mattress 4. can.

As a result, it is possible to prevent the humidity from becoming excessively high and becoming hot and humid even when a large amount of sweating occurs, without impairing the heat retention property when the metabolism of the user is lowered (when the amount of heat generated from the body is reduced). Furthermore, since the air volume can be adjusted for each mattress, the temperature and humidity in the bed of each person can be appropriately adjusted even when a plurality of people sleep in the same room. Even when a plurality of people sleep on one mattress such as a double size mattress, the air volume can be controlled as two independent left and right mattresses.

Further, according to the mattress ventilation system 1, the air volume can be controlled more appropriately. That is, since the wind generated in the upper mattress 4 has the effect of lowering the temperature of the upper mattress 4 and the effect of lowering the humidity of the upper mattress 4, the air volume is determined based on both the temperature and humidity information of the upper mattress 4. By controlling it, it is possible to realize a more appropriate air volume. Further, since the optimum temperature and humidity of the upper mattress 4 change depending on the sleep depth of the user, it is possible to realize a more appropriate air volume by controlling the air volume based on the sleep depth information. It is possible.

The air volume control unit 16 controls the air volume based on the calculation result using the calculation formula (any of the first to sixth formulas) using the temperature and the humidity as parameters. The calculation formula is set so that the higher the temperature, the larger the air volume, and the higher the humidity, the larger the air volume, and the sleep depth is updated when the predetermined condition is satisfied. It has become so. By using an appropriate calculation formula with temperature and humidity as parameters in this way, it is possible to realize air volume control that takes temperature and humidity into consideration in a well-balanced manner.

In the present embodiment, the air volume control unit 16 recognizes the timings (t1 to t5) in the vicinity of each peak time (P1 to P5) of the sleep depth, and updates the calculation formula each time the timings arrive. It is designed to do. This makes it easier to control the more ideal air volume by using the calculation formulas adapted to each of the hyperhidrosis period and the low sweat period.

It is known that the sleep rhythm is usually a rhythm in which a sleep cycle in which the change from a shallow sleep depth to a deep sleep state and then to a shallow sleep cycle is one cycle is repeated. Furthermore, it has been found that this sleep cycle is typically about 90 minutes. Therefore, by utilizing this, a part of each timing (t1 to t5) described above may be recognized. For example, while recognizing the timing t1 in the same manner as in the present embodiment, the sleep rhythm is estimated assuming that the sleep cycle is 90 minutes and the lengths of the hyperhidrosis period and the hypohidrosis period are the same. The timings t2 to t5 may be recognized based on the estimated sleep rhythm.

Further, the method of controlling the air volume of the wind generation unit 20 (a form of the wind generation device that generates wind in the upper mattress 4) in the present embodiment is sleep information for acquiring information on the sleep depth of the user of the upper mattress 4. The method includes an acquisition step, a temperature / humidity information acquisition step for acquiring temperature and humidity information of the upper mattress 4, and a control step for controlling the air volume based on the sleep depth, the temperature, and the humidity. ing.

2. 2. Second Embodiment Next, the mattress ventilation system 101 according to the second embodiment will be described. The mattress ventilation system 101 according to the second embodiment is basically the same as the mattress ventilation system 1 according to the first embodiment, except that the number of air ducts, fans, and fan drive units is different. In the following description, emphasis will be placed on explanations of points different from the first embodiment, and explanations may be omitted on points common to the first embodiment.

FIG. 8 is a block diagram of the mattress ventilation system 101 according to the present embodiment, and FIG. 9 is a top view of the mattress ventilation system 101. The mattress ventilation system 101 includes, in addition to the air duct 7 provided in the first embodiment, the right air duct 107 arranged so as to extend back and forth on the right side of the air duct 7, and the air duct 7. It has a left side air duct 117 arranged so as to extend back and forth on the left side. These air ducts 107 and 117 have the same configuration as the air duct 7.

Further, the mattress ventilation system 101 has a right side fan 108 and a right side fan drive unit 109 corresponding to the right side air duct 107, and also has a left side fan 118 and a left side fan drive unit 119 corresponding to the left side air duct 117. The right side fan 108 and the right side fan drive unit 109 have the same functions as the fan 8 and the fan drive unit 9 provided in the first embodiment, and are arranged on the right side of the fan 8 and the fan drive unit 9. ing. The right fan 108 is connected to the connecting opening 107b of the right air duct 107, and the right fan driving unit 109 serves to drive the right fan 108.

The left side fan 118 and the left side fan drive unit 119 have the same functions as the fan 8 and the fan drive unit 9, and are arranged on the left side of the fan 8 and the fan drive unit 9. The left fan 118 is connected to the connecting opening 117b of the left air duct 117, and the left fan driving unit 119 serves to drive the left fan 118.

In the present embodiment, the rotation direction of the fan 8 is set to generate a wind from the outside to the inside of the air duct 7, and the rotation direction of the right fan 108 is the wind from the inside of the right air duct 107 to the outside. It is set in the direction to generate the wind, and the rotation direction of the left side fan 118 is set to the direction in which the wind from the inside of the left side duct 117 to the outside is generated. This makes it possible to effectively generate the air flow shown by the broken line arrow in FIG. However, the rotation direction of each fan may be set in a direction different from this.

Further, the air volume control unit 16 determines the rotation speeds of the fans 8, 108, and 118, and transfers the rotation speed information of the fan 8 to the fan drive unit 9 and the rotation speed information of the right side fan 108 to the right side fan drive unit 109. Information on the rotation speed of the left fan 118 is sent to the left fan drive unit 119, respectively. As an example, the rotation speed of each fan 8, 108, 118 may be one-third of the rotation speed of the fan 8 determined in the first embodiment.

In the present embodiment, a plurality of air ducts are provided at intervals on the left and right, and each air duct can be used to generate wind in the upper mattress 4. Therefore, it is possible to generate wind evenly in the upper mattress 4 and suppress the bias of temperature and humidity as much as possible. In particular, when the upper mattress 4 having a large lateral dimension is used, the effect of using a plurality of air ducts in this way is remarkable. The number of air guide tubes provided may be two or four or more.

3. 3. Third Embodiment Next, the mattress ventilation system 201 according to the third embodiment will be described. The mattress ventilation system 201 according to the third embodiment is basically the same as the mattress ventilation system 1 according to the first embodiment, except that the presence or absence of a ventilation pipe and the number of fans and fan drive units are different. be. In the following description, emphasis will be placed on explanations of points different from the first embodiment, and explanations may be omitted on points common to the first embodiment.

FIG. 10 is a block diagram of the mattress ventilation system 201 according to the present embodiment, and FIG. 11 is a front view of the mattress ventilation system 201. The mattress ventilation system 201 replaces the air duct 7, the fan 8, and the fan drive unit 9 provided in the first embodiment with the head side fan 208a, the leg side fan 208b, and the head side fan drive unit. 209a and a leg-side fan drive unit 209b are provided.

The head-side fan 208a and the leg-side fan 208b have the same functions as the fan 8 in the first embodiment, and the head-side fan drive unit 209a and the leg-side fan drive unit 209b are fan-driven in the first embodiment. It has the same function as the unit 9. The head-side fan 208a is rotationally driven by the head-side fan drive unit 209a, and the leg-side fan 208b is rotationally driven by the leg-side fan drive unit 209b. The head side fan 208a is provided on the head side (front side) side surface of the upper mattress 4, and the leg side fan 208b is provided on the leg side (rear side) side surface of the upper mattress 4.

The rotation direction of the head side fan 208a is set to generate a wind from the outside to the inside of the upper mattress 4, and the rotation direction of the leg side fan 208b is a direction to generate an outward wind from the inside of the upper mattress 4. Is set to. As a result, the action of the fans 208a and 208b can effectively generate a wind from the front side to the rear side in the upper mattress 4.

Further, the air volume control unit 16 determines the rotation speeds of the fans 208a and 208b, and transfers the rotation speed information of the head side fan 208a to the head side fan drive unit 209a and the rotation speed information of the leg side fan 208b. To the leg side fan drive unit 209b, respectively. The rotation speed of each of the fans 208a and 208b may be, as an example, one half of the rotation speed of the fan 8 determined in the first embodiment.

As for the wind direction in the upper mattress 4, it is preferable to send the wind from the body-corresponding portion to the leg-corresponding portion where the amount of sweating is relatively large, but if the method can ventilate the inside of the upper mattress 4. There are no particular restrictions, and for example, wind may be sent from the leg-corresponding portion to the head-corresponding portion. Further, fans may be provided on both the left and right sides of the upper mattress 4 to generate wind from one of the left and right side surfaces of the upper mattress 4 toward the other.

In the upper mattress 4 of the mattress ventilation system 201 according to the third embodiment, it is preferable to provide the cushion material cover 205 as shown in FIG. FIG. 12 is a perspective view of the mattress ventilation system 201 when the upper mattress 4 formed by covering the cushion material cover 205 is used.

The cushion material cover 205 is composed of a first highly breathable fabric 205a in contact with the upper body of the user, a first highly breathable fabric 205b in contact with the lower body of the user, and a low breathable fabric 205c other than these, and is an upper mattress. Cover the outer peripheral surface of 4. The first and second highly breathable fabrics 205a and 205b are arranged on a predetermined portion on the upper surface of the cushion material cover 205, and the low breathable fabric 205c is arranged on another portion (including the side surface portion) of the cushion material cover 205. ing. The air permeability of the first and second highly breathable fabrics 205a and 205b is preferably 10 cm ³ / cm ² · s or more and 200 cm ³ / cm ² · s or less, and the low breathability fabric 205c. The air permeability is preferably 0.1 cm ³ / cm ² · s or more and 10 cm ³ / cm ² · s or less.

If the air permeability of the first and second highly breathable fabrics 205a and 205b is less than 10 cm ³ / cm ² · s, the diffusion rate of water vapor inside the fabric becomes low, and it becomes difficult for water vapor to be discharged quickly. When the air permeability of the first and second highly breathable fabrics 205a and 205b exceeds 200 cm ³ / cm ² · s, convection is likely to occur even when the wind generator 20 is stopped, and the heat retention is improved. It is easily damaged.

If the air permeability of the low-breathability fabric 205c is less than 0.1 cm ³ / cm ² · s, dew condensation is likely to occur inside the upper mattress 4, and mold and mites are likely to grow. When the air permeability of the low-breathability fabric 205c exceeds 10 cm ³ / cm ² · s, the wind generated by the wind generator 20 easily leaks to the outside (or easily flows in from the outside), and the first and first ones generated by sweating. 2 It becomes difficult to efficiently ventilate water vapor in the vicinity of the highly breathable fabrics 205a and 205b.

Further, the air permeability of the first highly breathable fabric 205a is more preferably 50 cm ³ / cm ² · s or more and 200 cm ³ / cm ² · s or less, and the second highly breathable fabric 205b. The air permeability is more preferably 10 cm ³ / cm ² · s or more and 50 cm ³ / cm ² · s or less. The air permeability is measured by an appropriate air permeability measuring method according to JIS L 1096-1999 8.27.1 A method (Frazil type method).

Since the first highly breathable fabric 205a is provided on the surface in contact with the upper body of the user in which the amount of sweating is relatively large, water vapor is rapidly diffused into the upper mattress 4 when sweating.
Since the second highly breathable fabric 205b is provided on the surface in contact with the lower body of the user who has a relatively small amount of sweating, the water vapor generated during sweating is appropriately diffused inside the upper mattress 4.

The low-breathability fabric 205c prevents the wind generated by the wind generation unit 20 from leaking to the outside of the upper mattress 4, so that the first high-breathability fabric does not excessively increase the air volume generated by the wind generation unit 20. The water vapor that has entered the upper mattress 4 can be efficiently discharged through the 205a and the second highly breathable fabric 205b. In this embodiment, the bottom surface of the cushion material cover 205 is made of a low-breathability fabric 205c having a low air permeability. However, when the upper mattress 4 is installed directly on the bed 2 made of a plate having low air permeability without using the lower mattress 3, wind may leak or flow in from the bottom surface of the cushion material cover 205. When the property is low, a highly breathable fabric may be used for the bottom surface, and further, the bottom surface may not be covered with the fabric.

As described above, the upper mattress 4 shown in FIG. 12 has a cushion material having ventilation and a cushion material cover 205 that covers the cushion material, and the air permeability of at least a part of the upper surface of the cushion material cover 205 is increased. It is higher than the air permeability of the side surface of the cushion material cover 205. Since the air permeability of the upper surface of the cushion material cover is high in this way, the water vapor due to the sweating of the user is quickly diffused inside the upper mattress 4, and at the same time, the air volume is spread in the vicinity of the upper surface of the cushion material cover that supports the user. The wind can be sent efficiently without raising it excessively. As a result, the water vapor staying in the cushion material cover is diffused by the wind (air flow) guided near the upper surface of the cushion material cover in contact with the user, and is discharged to the outside of the upper mattress 4.

4. Others The mattress ventilation system of each embodiment described above has the following configuration, so that the human body itself uses the heat and moisture generated according to the sleep state to make the bedding state suitable for sleep. It is possible to appropriately control the ventilation inside the bedding. The mattress ventilation system is a system that controls the state of the upper mattress 4 by the wind generated in the upper mattress 4 (a form of the mattress), and acquires sleep information to acquire information on the sleep depth of the user of the upper mattress 4. A unit 14 and an air volume control unit 16 for controlling the air volume in the upper mattress 4 are provided, and the air volume control unit 16 controls the air volume in the period when the sleep depth is deep compared to the period when the sleep depth is shallow. It is said to have many configurations.

Further, the mattress ventilation system is provided with a temperature / humidity information acquisition unit 15 (a form of a mattress information acquisition unit) that reflects the humidity around the user and acquires at least humidity information of the mattress 4, and the air volume control unit 16 is provided. The air volume is controlled at least based on the humidity information. Further, the mattress information acquisition unit also acquires the temperature information of the upper mattress 4, and the air volume control unit 16 controls the air volume based on the humidity information and the temperature information. Further, the mattress information acquisition unit acquires at least one of the humidity information and the temperature information by using a sensor provided near the upper surface portion of the mattress near the body surface of the user.

Although the embodiments of the present invention have been described above, the configuration of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention. That is, the above embodiment should be considered to be exemplary in all respects and not restrictive. It is understood that the technical scope of the present invention is shown by the scope of claims, not the description of the above embodiment, and includes all modifications belonging to the meaning and scope equivalent to the scope of claims. Should be.

The present invention can be used for mattress ventilation systems and the like.

1, 101, 201 Mattress ventilation system 10 Sleeper 20 Wind generator 30 Information processing unit 2 Sleeper 3 Lower mattress 4 Upper mattress 5a-5c Body motion detection sensor 6a-6c Wet temperature detection sensor 7 Ventilation pipe 7a Head ventilation hole 7b Connection opening 7c-7j Intermediate ventilation hole 8 Fan 9 Fan drive unit 14 Sleep information acquisition unit 15 Temperature / humidity information acquisition unit (mattress information acquisition unit)
16 Air volume control unit

Claims (6)

A mattress ventilation system that controls the condition of the mattress by the wind generated in the mattress.
A sleep information acquisition unit that acquires information on the sleep depth of the mattress user,
A mattress information acquisition unit that acquires humidity information of the mattress that reflects the humidity around the user and temperature information of the mattress.
An air volume control unit that controls the air volume in the mattress and increases the air volume in the period when the sleep depth becomes deeper than in the period when the sleep depth becomes shallow is provided.
The air volume control unit controls the air volume based on a calculation result using a calculation formula using the temperature information and the humidity information as parameters.
The calculation formula is
The higher the temperature, the larger the air volume, and the higher the humidity, the larger the air volume.
A mattress ventilation system characterized in that the sleep depth is updated when a predetermined condition is met . The sleep information acquisition unit
The mattress ventilation system according to claim 1, further comprising a body motion detection sensor that detects the body motion of the user, and acquiring information on the sleep depth based on the detection result of the body motion detection sensor . A wind generating part for generating wind is provided in the mattress.
The wind generator
It includes a wind guide tube that extends in the substantially height direction and has a plurality of ventilation holes, and generates the wind by sending air into the air guide tube or sucking air from the air guide tube.
The mattress ventilation system according to claim 1, wherein the ventilation hole is formed so that the air volume of the body portion is larger than that of the leg corresponding portion . The mattress information acquisition unit
A claim comprising a plurality of temperature / humidity sensors, and acquiring information on the highest temperature and humidity among the temperatures and humidity detected by each of the plurality of temperature / humidity sensors as information used for controlling the air volume. Item 1. The mattress ventilation system according to Item 1. The mattress ventilation system according to claim 3, wherein the operation of generating wind in the wind generating unit is performed intermittently . A mattress ventilation system that controls the condition of the mattress by the wind generated in the mattress.
A sleep information acquisition unit that acquires information on the sleep depth of the mattress user,
A mattress information acquisition unit that acquires humidity information of the mattress that reflects the humidity around the user and temperature information of the mattress.
An air volume control unit that controls the air volume in the mattress based on the humidity information and the temperature information, and increases the air volume in the period when the sleep depth becomes deeper than in the period when the sleep depth becomes shallow.
A wind generating unit that generates wind in the mattress is provided.
The wind generator
It includes a wind guide tube that extends in the substantially height direction and has a plurality of ventilation holes, and generates the wind by sending air into the air guide tube or sucking air from the air guide tube.
The ventilation hole is formed so that the air volume in the body corresponding portion is larger than that in the leg corresponding portion.
The operation of generating wind in the wind generating portion is performed intermittently.
The mattress information acquisition unit is a mattress ventilation system characterized by acquiring the temperature information and the humidity information when the operation of generating the wind is stopped .

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