JP2005296177A - Environmental temperature controller - Google Patents

Abstract

An object of the present invention is to efficiently obtain a pleasant sleep, that is, a more comfortable awakening and deep sleep by controlling the environmental temperature in accordance with the sleep rhythm of a living body.
An environmental temperature control device includes a sleep depth measurement means and a temperature control means. Sleep depth measurement means 41 has a function of detecting the onset of sleep T ₀ of the body 9, and a function of measuring the sleep depth of the human body 9 after sleep onset, sleep onset time T ₀ detection and after sleep onset of sleep depth Make measurements. The sleep time T ₀ and the sleep depth are given to the temperature control means 51. Temperature control means 51, at least a predetermined time period from the onset of sleep T _0, by reducing monotonically ambient temperature, to control the environmental temperature based on the period of the sleep depth. Predetermined period, from the onset of sleep T _0, the spacing of the second extreme of the extreme that the sleep depth becomes deeper until obtaining the sleep depth.
[Selection] Figure 1

Description

  The present invention relates to an environmental temperature control technique, and can be applied to an air conditioning technique, for example.

  Conventionally, in order to obtain a good sleep, the environment during sleep has been controlled by air conditioning technology or the like. For example, the environmental temperature is controlled by keeping the environmental temperature such as room temperature constant or by increasing the environmental temperature after falling asleep. These control techniques are effective for relieving coldness (sleeping) and coldness during sleep, but there is a problem that the body temperature during sleep does not sufficiently decrease and the amount of sweating during sleep increases. Accompanying this, there were cases in which thirst, dullness due to water loss, awakening during sleep due to heat, and the like. For this reason, the original purpose of environmental control for obtaining a good sleep may not be achieved.

  In recent years, in order to solve these problems, a technique for controlling an environment during sleep in consideration of a body temperature rhythm inherent in a living body has been developed. For example, in all of Patent Documents 1 to 3, the environmental temperature is monotonously decreased at the time of falling asleep and until a predetermined time elapses thereafter, and the environmental temperature is monotonously increased at the time of awakening and a predetermined time before the awakening.

JP-A-9-303840 JP 2003-10230 A Japanese Patent No. 2998781

  However, none of the above-described control techniques are techniques that take into account the body temperature rhythm from the viewpoint of sleep depth during sleep. For this reason, there is a possibility that a sufficient sleep depth accumulation time cannot be obtained with the conventional control technique. Moreover, even if sufficient sleep depth accumulated time can be obtained, there is a problem that long sleep is required for that purpose, and efficiency is poor.

  The present invention has been made in view of the above circumstances, and by taking into account the body temperature rhythm of the living body from the viewpoint of sleep depth, the environmental temperature is controlled according to the sleep rhythm of the living body, so The objective is to obtain comfortable awakening and deep sleep efficiently.

  The environmental temperature control apparatus according to claim 1 of the present invention controls the environmental temperature based on the sleep depth cycle of the human body (9).

The environmental temperature control device according to claim 2 of the present invention is the environmental temperature control device according to claim 1, wherein the human body (9) detects a sleep time (T ₀ ) of the human body (9); A sleep depth measuring means (41) having a function of measuring a sleep depth, and a temperature control means (51) for controlling the environmental temperature based on a cycle of the sleep depth, wherein the temperature control means At least a predetermined period from the time point, the environmental temperature is monotonously decreased, and the predetermined period is an interval from the sleep time point until the sleep depth reaches the second extreme value.

The environmental temperature control apparatus according to claim 3 of the present invention is the environmental temperature control apparatus according to claim 1, wherein the time dependency of the sleep depth is measured in advance, and the sleep depth is a second extreme value. A sleep depth measuring means having a function of detecting a sleep time (T ₀ ) of the human body (9), and a storage unit (62) that stores the time (T ₂ ) to obtain the sleep time and the sleep time (T ^* ₀ ) 42) and temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle, wherein the temperature control means is at least a predetermined period from the sleep time detected by the sleep depth measurement means. Until the time elapses, the environmental temperature is monotonously decreased, and the predetermined period is an interval between the stored sleep time and the stored time.

An environmental temperature control device according to a fourth aspect of the present invention is the environmental temperature control device according to the first aspect, wherein an interval from sleep onset to a point in time when the sleep depth reaches the second extreme value is predetermined. A storage unit (62) that is measured in advance as a period (ΔT _0,2 ) and stores the predetermined period; a sleep depth measurement unit (42) having a function of detecting a sleep time (T ₀ ) of the human body; Temperature control means (52) for controlling the environmental temperature based on a sleep depth cycle, and the temperature control means monotonously adjusts the environmental temperature until at least the predetermined period has elapsed from the time of sleep. Reduce.

The environmental temperature control apparatus according to claim 5 of the present invention is the environmental temperature control apparatus according to claim 1, wherein the human body (9) detects a sleep time (T ₀ ) of the human body (9), A sleep depth measuring means (41) having a function of measuring a sleep depth, and a temperature control means (51) for controlling the environmental temperature based on a cycle of the sleep depth, wherein the temperature control means The ambient temperature is monotonously decreased at least for a predetermined period from the time point, and the predetermined period is after the sleep depth has obtained a second extreme value from the sleep time point, and the sleep depth is the sleep depth 3 It is an interval until it transfers to sleep depth 2.

The environmental temperature control device according to claim 6 of the present invention is the environmental temperature control device according to claim 1, wherein the time dependency of the sleep depth is measured in advance, and the sleep depth is a second extreme value. A storage unit (62) that stores a time point (T _t ) when the sleep depth shifts from sleep depth 3 to sleep depth 2 and a sleep time point (T ^* ₀ ), and the human body (9 ) Sleep depth measuring means (42) having a function of detecting the sleep time (T ₀ ) and temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle, and the temperature control The means monotonically decreases the environmental temperature until at least a predetermined period has elapsed from the sleep time detected by the sleep depth estimation means, and the predetermined period is stored as the stored sleep time It is the interval from the time.

The environmental temperature control apparatus according to claim 7 of the present invention is the environmental temperature control apparatus according to claim 1, wherein the sleep depth is obtained after the sleep depth has obtained a second extreme value after falling asleep. The interval from when the sleep depth shifts to the sleep depth 2 from the sleep depth 3 is measured in advance as a predetermined period (ΔT _{0, t} ), and the storage unit (62) that stores the predetermined period; and the human body (9) A sleep depth measuring means (42) having a function of detecting a sleep time (T ₀ ) and a temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle, the temperature control means Decreases the environmental temperature monotonously until at least the predetermined period elapses from the sleep time.

An environmental temperature control apparatus according to an eighth aspect of the present invention is the environmental temperature control apparatus according to any one of the second to seventh aspects, wherein the temperature control means (51; 52) The environmental temperature is not lowered after the predetermined period has elapsed from the time point (T ₀ ).

  In any one of the environmental temperature control devices according to claims 2 to 8, it is desirable to control the environmental temperature at the time of sleep to 29.5 ° C.

An environmental temperature control apparatus according to claim 10 of the present invention is the environmental temperature control apparatus according to claim 1, wherein the temperature rise from the minimum value of the environmental temperature after falling asleep to the start of increase in body temperature after falling asleep. A predetermined time period (ΔT), which is an interval of the sleep time, and a sleep depth measuring means (44) for detecting time points (T _J , T _{J + 1} ) of the J-th and (J + 1) -th REM sleeps after falling asleep, and the predetermined time period And a storage unit (64) for storing the J-th and (J + 1) -th REM sleep points, and temperature control means (54) for controlling the environmental temperature based on the sleep depth cycle, The temperature control means adds a period obtained by multiplying an interval from the time point of the (J + 1) th REM sleep to the time point of the Jth REM sleep to the time point of the (J + 1) th REM sleep. ^(T _{* J + 2)} before from From a period longer than the predetermined time period ([Delta] T ^*) only predated second time point (T _W), monotonously increases the environmental temperature from the lowest value.

An environmental temperature control apparatus according to an eleventh aspect of the present invention is the environmental temperature control apparatus according to the first aspect, wherein after the start of the increase from the minimum value of the environmental temperature after falling asleep, until the start of the increase of the body temperature after falling asleep. And a predetermined period (ΔT) that is an interval of time and a time point (T ^* _J , T ^* _{J + 1} ) of the J-th and (J + 1) -th REM sleeps after falling asleep are measured in advance, and the predetermined period, the J-th and ( Based on the sleep depth measurement means (45) having a function of measuring the sleep depth of the human body (9), and a cycle of the sleep depth A temperature control means (55) for controlling the environmental temperature, and a period obtained by multiplying an interval between the time point of the (J + 1) th REM sleep and the time point of the Jth REM sleep stored in the storage unit by an integer By the sleep depth measuring means. It was detected Te (J + 1) th first time point _{^(T * J + 2)} from the longer period than the predetermined period plus the time of the REM sleep _{(T J + 1) (ΔT} *) second timing predated by _(T W) Thus, the temperature control means monotonously increases the environmental temperature from the minimum value.

An environmental temperature control apparatus according to a twelfth aspect of the present invention is the environmental temperature control apparatus according to the first aspect, wherein an interval from the time point of the (J + 1) th REM sleep to the time point of the Jth REM sleep is an integer. A period longer than the interval from the first time when the multiplied period is added to the time of the (J + 1) -th REM sleep until the start of the rise in body temperature after going to sleep after the start of rising from the lowest value of the environmental temperature after going to sleep A sleep depth measuring means (46) having a function of detecting a sleep time point (T ₀ ) of the human body, wherein a second time point (T _W ) and a sleep time point (T ^* ₀ ) measured in advance are measured in advance. A storage unit (66) for storing a second time point; and temperature control means (56) for controlling the environmental temperature based on the sleep depth cycle, wherein the temperature control means stores the second time point And a predetermined period which is an interval between the sleep time and The ambient temperature is monotonously increased from the lowest value from the time when the sleep time detected by the sleep depth measuring means has elapsed.

An environmental temperature control device according to a thirteenth aspect of the present invention is the environmental temperature control device according to any one of the tenth to twelfth aspects, wherein the temperature control means determines the sleep depth after falling asleep. It further has a function of monotonically decreasing the environmental temperature until the third time point (T ₂ ) at which the second extreme value is obtained, and the second time point (T _W ) is located after the third time point has elapsed. .

An environmental temperature control apparatus according to a fourteenth aspect of the present invention is the environmental temperature control apparatus according to any one of the tenth to twelfth aspects, wherein the temperature control means determines the sleep depth after falling asleep. A function of monotonically decreasing the environmental temperature until a third time point (T _t ) after the second extreme value is obtained and the sleep depth shifts from sleep depth 3 to sleep depth 2; The second time point (T _W ) is located after the third time point has elapsed.

  In any one of the environmental temperature control devices according to claims 10 to 14, it is desirable to maintain the minimum value for 1 hour, and to control the maximum value of the environmental temperature to 29.5 ° C.

  An environmental temperature control device according to a seventeenth aspect of the present invention is the environmental temperature control device according to any one of the first to sixteenth aspects, wherein a minimum value of the environmental temperature is 27.5 ° C. .

  According to the environmental temperature control apparatus of the first aspect of the present invention, since the environmental temperature is controlled in accordance with the rhythm of the human body, more comfortable awakening and deep sleep can be efficiently obtained.

  According to the environmental temperature control apparatus according to claim 2 of the present invention, the depth of sleep of the second deep sleep is made deeper among the first and second deep sleep after entering the sleep, which greatly affects the accumulated deep sleep time. Therefore, the accumulated deep sleep time can be increased in a short time.

  According to the environmental temperature control device according to any one of claim 3 and claim 4 of the present invention, the first after sleep onset having a great influence on the accumulated deep sleep time without measuring the sleep depth for each sleep. And the sleep depth of the 2nd deep sleep can be made deeper among the 2nd deep sleep. Therefore, deep sleep accumulation time can be increased in a short time.

  According to the environmental temperature control apparatus according to claim 5 of the present invention, the sleep depth of the second deep sleep is made deeper among the first and second deep sleep after entering the sleep, which greatly affects the deep sleep cumulative time. be able to. Furthermore, the time during which the human body is in the second deep sleep state can be lengthened. Therefore, deep sleep accumulation time can be increased in a shorter time.

  According to the environmental temperature control device according to any one of claim 6 and claim 7 of the present invention, the second of the first and second deep sleep after falling asleep that greatly affects the deep sleep accumulated time. It becomes possible to deepen the sleep depth of deep sleep, and to increase the time during which the human body is in the second deep sleep state without measuring the sleep depth for each sleep. Therefore, deep sleep accumulation time can be increased in a shorter time.

  According to the environmental temperature control device according to any one of Claims 8 and 17, it is possible to avoid the cooling down.

  According to the environmental temperature control apparatus according to any one of claims 10 and 11, the body temperature of the human body starts rising after a predetermined period of time with respect to the increase in the environmental temperature. When awakening, the body temperature rises, so that smooth awakening can be obtained.

  According to the environmental temperature control apparatus of the twelfth aspect of the present invention, the body temperature of the human body starts rising after a predetermined period of time with respect to the increase of the environmental temperature without measuring the sleep depth every sleep, and the REM sleep It can be accompanied by a rise in body temperature when awakening at the timing of. Therefore, smooth awakening can be obtained.

  According to the environmental temperature control device according to any one of the thirteenth and fourteenth aspects of the present invention, smooth awakening can be obtained, and the environmental temperature can be decreased monotonously to the third time point. The accumulated deep sleep time can be increased in a short time, and deep sleep can be obtained.

First embodiment.
In this embodiment, deep sleep is obtained by controlling the environmental temperature after falling asleep. FIG. 1 is a diagram conceptually showing an environmental temperature control apparatus 1 according to the present embodiment.

The environmental temperature control device 1 includes a sleep depth measurement unit 41 and a temperature control unit 51. The sleep depth measuring means 41 has a function of detecting the sleep time T ₀ of the human body 9 and a function of measuring the sleep depth of the human body 9 after sleep. The temperature control means 51 controls the environmental temperature based on the sleep depth cycle.

Sleep onset time T ₀ can be detected, for example, the core body temperature sensor or skin temperature sensors, heart rate sensors, motion sensors, brain wave sensors, the pressure sensors.

  The sleep depth can be obtained, for example, by measuring an electroencephalogram. The sleep depth is classified into REM sleep having a shallow sleep and Non-REM sleep having a relatively deep sleep according to the degree of sleep depth. Furthermore, Non-REM sleep is divided into four stages from sleep stage 1 where sleep is shallow to sleep stage 4 where sleep is deep.

  FIG. 2 conceptually shows a change in sleep depth with respect to time (a) and a change in body temperature (b). A curve 101 shown in FIG. 2A represents a change in sleep depth. The depth of sleep deepens after falling asleep and obtains the deepest extreme value (hereinafter referred to as “first extreme value”) that reaches sleep stage 4. Then, the sleep depth becomes shallower, goes through the peak of REM sleep, becomes deeper again, and obtains the second extreme value. Thereafter, the sleep depth changes by alternately repeating the peak of REM sleep and the extreme value that appears when sleep becomes deep. The extreme value indicating the depth of sleep generally becomes gradually shallower as the sleep time elapses. And sleep depth leads to awakening. Awakening is a state of awakening.

  The body temperature shown in FIG. 2 (b) decreases monotonically until the time from falling asleep reaches 300 minutes, and then increases monotonously. The horizontal axis (time) shown in FIG. 2B corresponds to the horizontal axis (time) shown in FIG.

  Corresponding to the change of the sleep depth with respect to the time, the change of the deep sleep accumulated time with respect to the sleep time can be examined, thereby confirming how efficiently the deep sleep is obtained. The deep sleep accumulated time is obtained by accumulating the time in which the sleep depth is deeper than the sleep stage 3 (hereinafter referred to as “deep sleep”) with respect to the sleep time.

  For example, FIG. 3 shows a change in accumulated deep sleep time corresponding to a change in sleep depth shown in FIG. In FIG. 3, the deep sleep accumulated time is about 75 minutes by the time when the sleep depth after sleep falls from the deep sleep state located immediately after obtaining the second extreme value, that is, when the sleep time becomes about 150 minutes. It becomes. Thereafter, the deep sleep cumulative time does not increase much with respect to the sleep time.

  In general, when the depth of sleep passes the state of deep sleep that appears near the second extreme value, the state of deep sleep becomes difficult to appear. That is, even if the deep sleep state appears at the third and subsequent extreme values, the time in the deep sleep state is very short compared to the deep sleep state that appears at the first extreme value and the second extreme value. . Therefore, the deep sleep cumulative time increases with respect to the sleep time until the time when the sleep depth after falling asleep is just after the second extreme value is obtained and the sleep state is removed from the deep sleep state. However, it does not increase much with respect to sleep time.

  In general, the first extreme value is deep enough to reach the sleep stage 4 without being greatly affected by the environmental temperature or the like. Considering this and the fact that the deep sleep accumulated time does not increase so much after the deep sleep state appearing at the second extreme value is taken into consideration, the deep extreme can be obtained as deeply as possible, so that deep sleep can be obtained efficiently. Desirable for that.

  Also, considering the change in body temperature shown in FIG. 2B, in order for the second extreme value to be as deep as possible, the body temperature decreases monotonically until the sleep depth reaches at least the second extreme value. Good. Therefore, it is desirable to control the environmental temperature so as to induce a monotonous decrease in body temperature as shown in FIG. That is, it is desirable to control the environmental temperature based on the sleep depth cycle.

Therefore, the environmental temperature is controlled by using the environmental temperature control device 1 shown in FIG. Sleep depth measurement means 41 performs a measurement of the sleep depth after detection and sleep onset of sleep onset time T _0. The sleep time T ₀ and the sleep depth are given to the temperature control means 51. Temperature control means 51, at least a predetermined time period from the onset of sleep T _0, decreasing monotonically the environmental temperature. Predetermined period, from the onset of sleep T _0, the sleep depth is the distance until a second extreme. Here, monotonous means that the sign of the value obtained by differentiating the environmental temperature with respect to time does not change, and excludes an increase during the decrease or a decrease during the increase. However, the magnitude of the value obtained by differentiating the environmental temperature with time may vary. In other words, it is “monotonous” even if the decrease rate or the increase rate is changed. For example, the ambient temperature can be monotonously lowered by continuously supplying air 201 or the like having a temperature lower than the ambient temperature before the decline.

  For example, the algorithm shown in FIGS. 4 and 5 is proposed as an algorithm for monotonously decreasing the ambient temperature until the sleep depth reaches the second extreme value. FIG. 6 shows a case where the environmental temperature is constant for comparison. When the time (horizontal axis) shown in FIGS. 4 to 6 is 0 minutes, it corresponds to the time of falling asleep. Dotted lines 11, 12, and 13 are set values of the environmental temperature, and solid lines 21, 22, and 23 are actually measured values of the environmental temperature. As the environmental temperature, for example, the temperature in the bed is adopted. 4 and 5, the sleep time decreases the ambient temperature monotonously, particularly linearly, up to 180 minutes after falling asleep. Thereafter, in FIG. 4, the environmental temperature is monotonously increased, and in FIG. 5, the environmental temperature is held for 60 minutes and then monotonously increased.

  By adopting the algorithm shown in FIG. 4 and FIG. 5, the environmental temperature is lowered until the second REM sleep among the REM sleeps that appear periodically after falling asleep. By controlling according to these algorithms in this way, the environmental temperature can be controlled based on the sleep depth cycle.

  The changes in accumulated deep sleep time obtained under the algorithm shown in FIGS. 4 to 6 are shown in FIG. Curve 31 represents changes in accumulated deep sleep time corresponding to FIG. 4, curve 32 represents FIG. 5, and curve 33 represents FIG. In the curve 31, when the sleep time is about 170 minutes, the deep sleep cumulative time becomes about 90 minutes (time point 311). In the curve 32, when the sleep time is about 200 minutes, the deep sleep cumulative time becomes about 90 minutes (time point 321). On the other hand, in the curve 33, when the sleep time is about 350 minutes, the accumulated deep sleep time is about 90 minutes (time point 331). That is, the curves 31 and 32 obtain a predetermined deep sleep cumulative time (about 90 minutes here) in a shorter time than the curve 33. In other words, by applying the algorithm shown in FIGS. 4 and 5, the deep sleep cumulative time can be obtained more efficiently than when the algorithm of FIG. 6 is applied. In addition, at 120 minutes after falling asleep when the first deep sleep is considered to have elapsed, there is no significant difference in deep sleep accumulated time, so the algorithms shown in FIGS. 4 and 5 are different from those in FIG. In comparison, it can be estimated that the sleep depth of the second deep sleep is deeper.

  As described above, by reducing the ambient temperature monotonously as shown in FIGS. 4 and 5, the accumulated deep sleep time is increased in a short time by controlling the ambient temperature according to the rhythm of the human body. And deeper sleep can be obtained efficiently.

Second embodiment.
In the present embodiment, the time dependency of the sleep depth is measured in advance to control the environmental temperature. FIG. 8 is a diagram conceptually showing the environmental temperature control device 2 according to the present embodiment.

The environmental temperature control device 2 includes a sleep depth measurement unit 42, a temperature control unit 52, and a storage unit 62. The sleep depth measuring means 42 has a function of detecting the sleep time T ₀ of the human body 9. The temperature control means 52 controls the environmental temperature based on the sleep depth cycle.

The sleep depth measuring means 42 detects the sleep onset time T ₀ and gives this to the temperature control means 52. The storage unit 62 stores the time T ₂ and the sleep time T ^* ₀ of the second extreme value obtained based on the sleep depth measured in advance before sleep and supplies them to the temperature control means 52. Onset of sleep T ^{* _0,} the time T ₂ are can be measured in advance using the sleep depth measuring means 42. However, onset of sleep T ^{* 0} stored in the storage unit _62, a means for measuring the time T _2, there is no need to be combined to the sleep depth measuring means 42 for detecting the onset of sleep T _0. The temperature control unit 52 monotonously decreases the environmental temperature until at least a predetermined period has elapsed from the sleep onset time T ₀ detected by the sleep depth measurement unit 42. The predetermined period is an interval of the stored onset of sleep T ^* ₀ and the stored time T _2.

  According to the above-mentioned contents, the sleep depth of the second deep sleep is more selected from the first and second deep sleep after entering the sleep which has a great influence on the deep sleep accumulated time without measuring the sleep depth every sleep. Can be deep. Therefore, deep sleep accumulation time can be increased in a short time.

In the present embodiment, the interval from the time of going to sleep until the time when the sleep depth obtains the second extreme value is measured in advance as a predetermined period ΔT _0,2 , and the environmental temperature control device 2 shown in FIG. 8 is used. The environmental temperature may be controlled. At this time, the storage unit 62, instead of the time T _2, the predetermined time period [Delta] T _{0, 2,} which is measured in advance is stored. Then, the temperature control means 52, from the onset of sleep T ₀ until at least a predetermined time period [Delta] T _{0, 2} elapses reduces monotonously environmental temperature.

Third embodiment.
In the present embodiment, deep sleep is obtained by controlling the environmental temperature after falling asleep with an algorithm different from that of the first embodiment. The environmental temperature control device employed in the present embodiment includes the same elements as the environmental temperature control device 1 shown in FIG. In the present embodiment, the function of the temperature control means 51 is different from that of the first embodiment.

Temperature control means 51 is different from the first embodiment, at least a predetermined time period from the onset of sleep T _0, decreasing monotonically the environmental temperature. The predetermined period is an interval after the sleep depth is obtained from the second extreme value until the sleep depth shifts from the sleep stage 3 to the sleep stage 2.

  In the present embodiment, the time dependency of the sleep depth may be measured in advance, and the environmental temperature may be controlled using the environmental temperature control device 3 shown in FIG. 9, the same reference numerals as those in FIG. 8 denote the same elements. In the present embodiment, the contents stored in the storage unit 62 and the function of the temperature control means 52 are different from those in the first embodiment.

The memory | storage part 62 memorize | stores the time _Tt and sleep time T ^* ₀ which are obtained based on the sleep depth measured beforehand. Here, the time point T _t is a time point after the sleep depth is 2 and the transition from the sleep stage 3 to the sleep stage 2 is obtained. The sleep time T ^* ₀ and the time T _t can be measured in advance using the sleep depth measuring means 42. However, it is not necessary to combine the means for measuring the sleep time T ^* ₀ and the time T _t stored in the storage unit 62 with the sleep depth measurement means 42 for detecting the sleep time T ₀ . Then, the temperature control means 52, from the onset of sleep T ₀ detected by the sleep depth measurement means 42 until passage of at least a predetermined period, decreases monotonically environmental temperature. The predetermined period is an interval between the stored sleep time T ^* ₀ and time _Tt .

In addition, the interval from sleep onset to the time when the sleep depth is obtained from the second extreme value and the transition from the sleep stage 3 to the sleep stage 2 is measured in advance as a predetermined period ΔT _{0, t} . The environmental temperature may be controlled using the environmental temperature control device 3 shown in FIG. At this time, the storage unit 62 stores a predetermined period ΔT _{0, t} measured in advance, instead of the time T _t . Then, the temperature control means 52 monotonously decreases the environmental temperature until at least a predetermined period ΔT _{0, t} has elapsed from the sleep time T ₀ .

  According to the above-described contents, not only the same effect as the case where the environmental temperature is controlled using the environmental temperature control devices 1 and 2 described in the first embodiment, but also after the human body 9 falls asleep, Since the environmental temperature decreases monotonously until the eye takes a deep sleep state, the time during which the human body 9 is in the second deep sleep state can be lengthened. Therefore, deep sleep accumulation time can be increased in a shorter time. Moreover, according to the environmental temperature control apparatus 3, it is not necessary to measure a sleep depth for every sleep.

In any of the above-described embodiments, it is desirable not to lower the environmental temperature after a predetermined period (ΔT _0,2 , ΔT _{0, t,} etc.) has elapsed since the sleep time T ₀ . Thereby, it is possible to avoid a chill during sleep. For example, the environmental temperature during sleep may be controlled to 29.5 ° C.

Fourth embodiment.
In the present embodiment, comfortable awakening is obtained by controlling the environmental temperature before awakening. FIG. 10 is a diagram conceptually showing the environmental temperature control device 4 according to the present embodiment. 11A to 11C are diagrams conceptually showing a time point and a predetermined period related to the present embodiment.

  The environmental temperature control device 4 includes a sleep depth measurement unit 44, a temperature control unit 54, and a storage unit 64. The sleep depth measuring means 44 has a function of measuring the sleep depth. The temperature control means 54 controls the environmental temperature based on the sleep depth cycle.

The sleep depth measuring means 44 detects the time points T _J and T _{J + 1} (FIG. 11B) of the J-th and (J + 1) -th REM sleep after sleep by measuring the sleep depth (J ≧ 2). The time point T _J is given to the storage unit 64, and the time point T _{J + 1} is given to the temperature control means 54 and the storage unit 64, respectively.

In FIG. 11A, a curve 14 representing a change in environmental temperature and a curve 24 representing a change in human body temperature relative to the environmental temperature are shown. According to the curve 14 and 24, when the environmental temperature starts to rise from the time T _S, from the time T _P delayed from time T _S for a predetermined time period ΔT is temperature of the human body 9 begins to rise. This predetermined period ΔT can also be grasped as an interval from the start of rising from the lowest environmental temperature after falling asleep until the start of rising body temperature after falling asleep. The predetermined period ΔT is measured in advance. The predetermined period ΔT depends on a delay in temperature change due to the heat capacity of the human body and a delay due to bedding and clothes. Therefore, by measuring frequently such as every day, it is possible to reduce the influence of differences in bedding and clothing due to differences in seasons.

The storage unit 64 stores a predetermined period ΔT measured in advance and time points T _J and T _{J + 1} . Then, the time points T _J , T _{J + 1} and the predetermined period ΔT are given to the temperature control means 54. Then, the temperature control means 54 monotonously increases the ambient temperature from the lowest value from the time point T _W obtained based on the time points T _J , T _{J + 1} and the predetermined period ΔT after the time point T _{J + 1} has elapsed. The change in ambient temperature at this time is represented by a curve 25 shown in FIG. In FIG.11 (c), 27.5 degreeC is employ | adopted for the minimum value of environmental temperature.

The time point _TW is obtained as follows. A period obtained by multiplying the interval from the time point T _{J + 1} to the time point T _J by an integer is added to the time point T _{J + 1} , and this is defined as a time point T ^* _{J + 2} . In FIG. 11B, a period 2 · (T _{J + 1} −T _J ) is used in which the interval from time T _{J + 1} to time T _J is doubled. Then, as shown in FIG. 11 (c), the timing predated from time ^T _{* J + 2} long period [Delta] T ^* only than the predetermined time period [Delta] T and time _{T W.}

The above contents can also be grasped as follows, _assuming that the time point T ^* _{J + 2} is the first time point and the time point _TW is the second time point. That is, the temperature control means 54 uses a time obtained by multiplying the interval from the (J + 1) th REM sleep time _{TJ + 1} to the Jth REM sleep time _TJ by an integer, to the (J + 1) th REM sleep time _{TJ + 1.} from the second time point T _W predated long period [Delta] T ^* only than the first time point T ^{* J} _{+ 2} from the predetermined time period [Delta] T was added to, to monotonously increase the environmental temperature from the lowest value.

  For example, by continuously supplying air 202 or the like having a temperature higher than the minimum value of the environmental temperature, the temperature control means can monotonously increase the environmental temperature.

  Since the body temperature of the human body starts rising after a predetermined period of time with respect to the increase of the environmental temperature, the body temperature increases when awakening at the timing of REM sleep. Accompanying a rise in body temperature during awakening is one factor for obtaining a comfortable awakening. Therefore, smooth awakening can be obtained by controlling the environmental temperature as described above.

Fifth embodiment.
In this embodiment, the time points T ^* _J and T ^* _{J + 1 of the} J-th and (J + 1) -th REM sleeps after falling asleep and the predetermined period ΔT described in the third embodiment are measured in advance, and the ambient temperature To control. FIG. 12 is a diagram conceptually showing the environmental temperature control device 5 according to the present embodiment.

  The environmental temperature control device 5 includes a sleep depth measurement unit 45, a temperature control unit 55, and a storage unit 65. The sleep depth measuring means 45 has a function of measuring the sleep depth. The temperature control means 55 controls the environmental temperature based on the sleep depth cycle.

The sleep depth measuring means 45 detects the time T _{J + 1} of the (J + 1) -th REM sleep after falling asleep by measuring the sleep depth. The time point T _{J + 1} is given to the temperature control means 54.

The storage unit 65 stores a predetermined period ΔT and time points T ^* _J and T ^* _{J + 1} that are measured in advance. The time point T ^* _J and the time point T ^* _{J + 1} can be measured in advance using the sleep depth measuring means 45. However, it is not necessary to combine the means for measuring the time point T ^* _J and the time point T ^* _{J + 1} to be stored in the storage unit 65 with the sleep depth measuring means 45 for detecting the time point _{TJ + 1} .

Temperature control means 55, after the elapse of the time _{T J + 1,} the stored time ^T _* ^J, _{T *} from the time _{T W} obtained based on the _{J + 1} and a predetermined period ΔT and the time _{T J + 1,} monotonically environmental temperature from the lowest value Raise.

The time point _TW is obtained as follows. A period obtained by multiplying the stored interval from the time point T ^* _{J + 1} to the time point T ^* _J by an integral number is added to the time point _{TJ + 1} detected by the sleep depth measurement means, and this is defined as a time point T ^* _{J + 2} . Then, the timing predated from time ^T _{* J + 2} long period [Delta] T ^* only than the predetermined time period [Delta] T and time _{T W.}

The above contents can also be grasped as follows, _assuming that the time point T ^* _{J + 2} is the first time point and the time point _TW is the second time point. That is, stored in the storage unit 65 (J + 1) -th period an integral multiple of the interval between the time point ^T _{* J + 1} and J th point ^T _{* J} of REM sleep REM sleep, is detected by the sleep depth measuring means 45 and (J + 1) -th from the second time point _{T W} predated long period [Delta] T ^* only than the predetermined time period [Delta] T from the first time point ^T _{* J + 2} plus the time _{T J + 1} of REM sleep, the temperature control means 55 lowest environmental temperature Increase monotonically from the value.

  Since the body temperature of the human body starts rising after a predetermined period of time with respect to the increase of the environmental temperature every sleep, the body temperature is increased when awakening at the timing of REM sleep. Accompanying a rise in body temperature during awakening is one factor for obtaining a comfortable awakening. Therefore, smooth awakening can be obtained by controlling the environmental temperature as described above.

Sixth embodiment.
In this embodiment, the second time T _W, which is described in the fourth embodiment or the fifth embodiment, by previously measuring the onset of sleep T ^* _0, to control the environmental temperature. FIG. 13 is a diagram conceptually showing the environmental temperature control device 6 according to the present embodiment.

The environmental temperature control device 6 includes a sleep depth measurement unit 46, a temperature control device 56, and a storage unit 66. The sleep depth measuring means 46 has a function of detecting the sleep time T ₀ of the human body 9. The temperature control means 56 controls the environmental temperature based on the sleep depth cycle.

The sleep depth measuring means 46 detects the sleep onset time T ₀ and supplies it to the temperature control means 56. Storage unit 66 stores the second time T _W and onset of sleep T ^* _0, which is measured in advance, giving it to the temperature control means 56. Onset of sleep T ^{* _0,} the time T _W is determined using the previously sleep depth measuring unit 46, can be calculated. However, onset of sleep T ^{* 0} stored in the storage unit _66, measures the time T _W, means for calculating, there is no need to be combined to the sleep depth measuring means 46 for detecting the onset of sleep T _0.

Temperature control means 56, from the time the predetermined period is the interval between the second time point T _W and onset of sleep T ^* ₀ stored has elapsed from onset of sleep T ₀ detected by the sleep depth measuring device, the environmental temperature Increase monotonically from the lowest value.

  According to the above-mentioned contents, the body temperature of the human body is started to rise after a predetermined period of time with respect to the increase of the environmental temperature without measuring the sleep depth for each sleep, and the body temperature is increased when awakening at the timing of REM sleep. Can accompany them. Therefore, smooth awakening can be obtained.

  The temperature control means provided in the environmental temperature control device described in this embodiment or the fourth and fifth embodiments also controls the environmental temperature after falling asleep described in the first to third embodiments. May be.

For example, in the environmental temperature control device 6 (this embodiment) shown in FIG. 13, the storage unit 66 and the temperature control unit 56 are replaced with the functions (second embodiment) of the storage unit 62 and the temperature control unit 52 shown in FIG. (Form) may further be included. That is, the storage unit 66 stores time points T ^* ₀ , T ₂ , and _TW , respectively, and these time points are given to the temperature control means 56. Then, the temperature control means 56, in the sleep latency from sleep onset time T ₀ detected by the sleep depth measuring means 46, the predetermined time period has elapsed is the distance between the stored onset of sleep T ^* ₀ and time T ₂ The ambient temperature decreases monotonously. Further, at the time of awakening, from the time the predetermined period is the interval between the second time point T _W and onset of sleep T ^* ₀ stored has elapsed from onset of sleep T ₀ detected by the sleep depth measurement unit 46, the environment Increase the temperature monotonically from the lowest value. At this time, in order not to interfere with the lowering of the environmental temperature, the second time point T _W is preferably located after the time T ₂ has elapsed.

The above contents can also be grasped as follows. That is, the temperature control unit 56 further has a function to lower the environmental temperature after sleep onset, sleep depth to the third time point T ₂ to obtain a second extreme. Then, the second time point T _W located after a lapse of the third time point T _2.

Further, when the temperature control means provided in the environmental temperature control device described in the present embodiment or the fourth and fifth embodiments also controls the environmental temperature described in the third embodiment, It can be grasped as follows. That is, the temperature control means monotonically adjusts the environmental temperature until the third time point T _t when the sleep depth shifts from the sleep depth 3 to the sleep depth 2 after the sleep depth is obtained after the second sleep. It further has a function of lowering. The second time point _TW is located after the third time point T _t has elapsed.

  By using such an environmental temperature control device, smooth awakening can be obtained and the environmental temperature can be decreased monotonously to the third time point, so that the deep sleep cumulative time can be increased in a short time. It also becomes possible to get deep sleep.

  In the present embodiment or the fourth and fifth embodiments, it is desirable that the minimum value of the environmental temperature is 27.5 ° C. Thereby, it is possible to avoid a chill during sleep. For example, the maximum environmental temperature may be controlled to 29.5 ° C., or the minimum environmental temperature may be held for 1 hour.

  By using the environmental temperature control device as described above, the environmental temperature is controlled in accordance with the rhythm of the human body from falling asleep to awakening, so that more comfortable awakening and deep sleep can be efficiently obtained.

It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 1st Embodiment. (A) It is a figure which shows notionally the change of the sleep depth with respect to time, and the change of the body temperature with respect to (b) time, respectively. It is a figure which shows the change of the deep sleep accumulation time with respect to sleep time. It is a figure which shows the algorithm of environmental temperature demonstrated by 1st Embodiment. It is a figure which shows the algorithm of environmental temperature demonstrated by 1st Embodiment. It is a figure which shows the algorithm of environmental temperature demonstrated by 1st Embodiment. It is a figure which shows the change of the deep sleep accumulation time with respect to sleep time. It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 2nd Embodiment. It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 3rd Embodiment. It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 4th Embodiment. It is a figure which shows notably various periods and time points. It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 5th Embodiment. It is a figure which shows notionally the environmental temperature control apparatus demonstrated by 6th Embodiment.

Explanation of symbols

9 Human body 41, 42, 44 to 46 Depth of sleep measuring means 51, 52, 54 to 56 Temperature control means 62, 64 to 66 Storage unit T ₀ Sleeping time T ^* ₀ Sleeping time T ₂ , T _t time measured in advance ΔT _0,2, ΔT _{0, t,} the time of [Delta] T the predetermined period T _J J th REM sleep _{T J + 1 (J + 1} ) th point of REM sleep T ^* _{J + 2} long periods T _W second time than the first time [Delta] T ^* [Delta] T T ^* _J Pre-measured Jth REM sleep time T ^* _{J + 1} Pre-measured (J + 1) th REM sleep time

Claims (17)

  An environmental temperature control device that controls the environmental temperature based on the period of sleep depth of the human body (9). A sleep depth measuring means (41) having a function of detecting a sleep time (T ₀ ) of the human body (9) and a function of measuring the sleep depth after sleep;
Temperature control means (51) for controlling the environmental temperature based on the sleep depth cycle,
The temperature control means monotonically lowers the environmental temperature for at least a predetermined period from the time of falling asleep,
The environmental temperature control apparatus according to claim 1, wherein the predetermined period is an interval from the time of falling asleep until the sleep depth reaches a second extreme value. The time dependency of the sleep depth is measured in advance,
A storage unit (62) for storing a time point (T ₂ ) at which the sleep depth obtains a second extreme value and a time point of sleep (T ^* ₀ );
A sleep depth measuring means (42) having a function of detecting a sleep time (T ₀ ) of the human body (9);
Temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle,
The temperature control means monotonously decreases the environmental temperature until at least a predetermined period has elapsed from the sleep time point detected by the sleep depth measurement means,
The environmental temperature control device according to claim 1, wherein the predetermined period is an interval between the stored sleep time point and the stored time point. The interval from the time of falling asleep until the time when the sleep depth reaches the second extreme value is measured in advance as a predetermined period (ΔT _0,2 ),
A storage unit (62) for storing the predetermined period;
A sleep depth measuring means (42) having a function of detecting the sleep time (T ₀ ) of the human body;
Temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle,
The environmental temperature control device according to claim 1, wherein the temperature control unit monotonously decreases the environmental temperature until at least the predetermined period has elapsed from the sleep time. A sleep depth measuring means (41) having a function of detecting a sleep time (T ₀ ) of the human body (9) and a function of measuring the sleep depth after sleep;
Temperature control means (51) for controlling the environmental temperature based on the sleep depth cycle,
The temperature control means monotonically lowers the environmental temperature for at least a predetermined period from the time of falling asleep,
2. The predetermined period is an interval from the time of falling asleep to after the sleep depth has obtained a second extreme value until the sleep depth shifts from sleep depth 3 to sleep depth 2. The environmental temperature control apparatus described. The time dependency of the sleep depth is measured in advance,
A memory for storing a time point (T _t ) when the sleep depth is obtained from the sleep depth 3 to a sleep depth 2 and a sleep time point (T ^* ₀ ) after the sleep depth has obtained the second extreme value. Part (62);
A sleep depth measuring means (42) having a function of detecting a sleep time (T ₀ ) of the human body (9);
Temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle,
The temperature control means monotonously decreases the environmental temperature until at least a predetermined period has elapsed from the sleep time detected by the sleep depth estimation means,
The environmental temperature control device according to claim 1, wherein the predetermined period is an interval between the stored sleep time point and the stored time point. After falling asleep, after the sleep depth has obtained the second extreme value, the interval from when the sleep depth shifts from sleep depth 3 to sleep depth 2 is a predetermined period (ΔT _{0, t} ). Measured in advance,
A storage unit (62) for storing the predetermined period;
A sleep depth measuring means (42) having a function of detecting a sleep time (T ₀ ) of the human body (9);
Temperature control means (52) for controlling the environmental temperature based on the sleep depth cycle,
The environmental temperature control device according to claim 1, wherein the temperature control unit monotonously decreases the environmental temperature until at least the predetermined period has elapsed from the sleep time. The environment according to any one of claims 2 to 7, wherein the temperature control means (51; 52) does not decrease the environment temperature after the predetermined period has elapsed from the sleep time (T ₀ ). Temperature control device. The environmental temperature control apparatus according to any one of claims 2 to 8, wherein the environmental temperature at the time of falling asleep (T ₀ ) is controlled to 29.5 ° C. A predetermined period (ΔT), which is an interval from the start of rising from the lowest value of the environmental temperature after falling asleep to the start of rising body temperature after falling asleep, is measured in advance,
A sleep depth measuring means (44) for detecting a time point (T _J , T _{J + 1} ) of the J-th and (J + 1) -th REM sleep after falling asleep;
A storage unit (64) for storing the predetermined period and the time points of the J-th and (J + 1) -th REM sleeps;
Temperature control means (54) for controlling the environmental temperature based on the period of the sleep depth,
The temperature control means adds a period obtained by multiplying an interval from the time point of the (J + 1) th REM sleep to the time point of the Jth REM sleep to the time point of the (J + 1) th REM sleep. _2. The environmental temperature control according to claim 1, wherein the environmental temperature is monotonously increased from the lowest value from a second time point (T _W ) that is retroactive from (T ^* _{J + 2} ) by a period (ΔT ^* ) longer than the predetermined period. apparatus. A predetermined period (ΔT) that is an interval from the start of rising from the lowest value of the environmental temperature after falling asleep to the start of rising of the body temperature after falling asleep;
The time point (T ^* _J , T ^* _{J + 1} ) of the J-th and (J + 1) -th REM sleeps after falling asleep is measured in advance,
A storage unit (65) for storing the predetermined period and the time points of the J-th and (J + 1) -th REM sleeps;
Sleep depth measuring means (45) having a function of measuring the sleep depth of the human body (9);
Temperature control means (55) for controlling the environmental temperature based on the sleep depth cycle,
A period obtained by multiplying the interval between the time point of the (J + 1) th REM sleep and the time point of the Jth REM sleep stored in the storage unit by an integer is detected by the sleep depth measurement unit. From the second time point (T _W ), which is a period (ΔT ^* ) longer than the predetermined time period from the first time point (T ^* _{J + 2} ) added to the time point of REM sleep (T _{J + 1} ), the temperature control means is The environmental temperature control device according to claim 1, wherein the temperature is monotonously increased from the minimum value. From the first time point when the interval from the time point of (J + 1) th REM sleep to the time point of Jth REM sleep is an integral multiple of the time point of (J + 1) th REM sleep, A second time point (T _W ) that goes back by a period longer than the interval from the start of rising from the minimum value to the start of rising temperature after falling asleep,
The sleep time (T ^* ₀ ) is measured in advance,
A sleep depth measuring means (46) having a function of detecting the sleep time (T ₀ ) of the human body;
A storage unit (66) for storing the second time point;
Temperature control means (56) for controlling the environmental temperature based on the period of the sleep depth,
The temperature control means sets the environmental temperature from the time when the predetermined period, which is the interval between the stored second time point and the sleep time, has elapsed from the sleep time detected by the sleep depth measurement means, to the minimum temperature. The environmental temperature control device according to claim 1, wherein the temperature is monotonously increased from the value. The temperature control means further has a function of monotonously decreasing the environmental temperature until a third time point (T ₂ ) at which the sleep depth obtains a second extreme value after falling asleep,
The environmental temperature control device according to any one of claims 10 to 12, wherein the second time point (T _W ) is located after the third time point has elapsed. The temperature control means, after falling asleep, after the sleep depth has obtained a second extreme value, until the third time point (T _t ) when the sleep depth shifts from the sleep depth 3 to the sleep depth 2. It further has a function to monotonously decrease the temperature,
The environmental temperature control device according to any one of claims 10 to 12, wherein the second time point (T _W ) is located after the third time point has elapsed.   The environmental temperature control apparatus according to claim 10, wherein the minimum value is held for one hour.   The environmental temperature control apparatus according to any one of claims 10 to 15, wherein the maximum value of the environmental temperature is controlled to 29.5 ° C.   The environmental temperature control apparatus according to any one of claims 1 to 16, wherein a minimum value of the environmental temperature is 27.5 ° C.

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