JP2023129223A - Vehicular seat air-conditioner - Google Patents

Abstract

To suppress an increase of costs and to provide a comfortable air-conditioning environment to a person seated in a seat.SOLUTION: A vehicular seat air-conditioner 100 is equipped with a first connection port that connects a first ventilation path 110 and a third ventilation path 130 so as to adjust a ratio of a flow rate of air led from the first ventilation path 110 to the third ventilation path 130 and a flow rate of air led from a second ventilation path 120 to the third ventilation path 130, an adjusting portion 170 that adjusts respective openings of a second connection port connecting the second ventilation path 120 and the third ventilation path 130 to adjust the ratio, and a control portion 192 that adjusts the openings by controlling the adjusting portion 170 on the basis of a first temperature indicating temperature in the first ventilation path 110, a second temperature indicating temperature in the second ventilation path 120, and a third temperature indicating temperature in the third ventilation path 130, and thus adjusts the ratio.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a vehicle seat air conditioner that blows air to a person sitting on a seat.

In recent years, there has been a demand for providing a comfortable air-conditioned environment to a person sitting on a seat (chair) arranged in a vehicle or the like (for example, see Patent Document 1).

Patent Document 1 discloses a device that uses a pressure sensor disposed on the seat and images the state of the person sitting on the seat to detect the physique and posture of the person and controls air conditioning for the seat. There is.

JP2020-189510A

However, devices such as pressure sensors and cameras used to detect the physique and posture of the person sitting on the seat are expensive. Therefore, there is a need for a device that can provide a comfortable air-conditioned environment to the person sitting on the seat while suppressing cost increases.

The present disclosure provides a comfortable air-conditioned environment for a person sitting on a seat while suppressing an increase in cost.

A vehicle seat air conditioner according to one aspect of the present disclosure is a vehicle seat air conditioner disposed in a vehicle and used for a seat having a seat back and a seat cushion. a first ventilation passage through which air sucked in by the blower passes from a first intake port provided on the surface of the seat, which is a surface located on the side of the person seated on the seat; and an intake port different from the first intake port; A second ventilation path through which air sucked in by the blower passes from a second air intake port provided at a location other than the surface of the sheet in the sheet, and the air is guided from at least one of the first ventilation path and the second ventilation path. a third ventilation passage that guides the air to a discharge port provided on the surface of the seat back, which is a surface located on the side of the person sitting on the seat; and a third ventilation passage that guides the air from the first ventilation passage to the third ventilation passage. a first connection port connecting the first ventilation path and the third ventilation path to adjust the ratio between the flow rate of air and the flow rate of air guided from the second ventilation path to the third ventilation path; , an adjustment unit that adjusts the ratio by adjusting the opening degree of each second connection port connecting the second ventilation path and the third ventilation path, and a control unit that controls the blower and the adjustment unit. and the control unit controls a first temperature that is a temperature in the first ventilation path, a second temperature that is a temperature in the second ventilation path, and a temperature in the third ventilation path. The ratio is adjusted by controlling the adjustment section and adjusting the opening degree based on the third temperature.

According to the vehicle seat air conditioner according to one aspect of the present disclosure, a comfortable air-conditioned environment can be provided to a person sitting on the seat while suppressing an increase in cost.

FIG. 1 is an external perspective view showing a seat according to an embodiment. FIG. 2 is a diagram for explaining the internal configuration of the seat according to the embodiment. FIG. 3 is a diagram schematically showing a specific example of the hardware configuration of the vehicle seat air conditioner according to the embodiment. FIG. 4 is a block diagram showing the configuration of the vehicle seat air conditioner according to the embodiment. FIG. 5 is a diagram for explaining temperature-related information according to the embodiment. FIG. 6 is a diagram for explaining output related information according to the embodiment. FIG. 7 is a flowchart showing the processing procedure of the vehicle seat air conditioner according to the embodiment. FIG. 8 is a diagram for explaining correction of temperature-related information according to the embodiment. FIG. 9 is a diagram for explaining correction of output related information according to the embodiment.

(Summary of this disclosure)
A vehicle seat air conditioner according to one aspect of the present disclosure is a vehicle seat air conditioner disposed in a vehicle and used for a seat having a seat back and a seat cushion. a first ventilation passage through which air sucked in by the blower passes from a first intake port provided on the surface of the seat, which is a surface located on the side of the person seated on the seat; and an intake port different from the first intake port; A second ventilation path through which air sucked in by the blower passes from a second air intake port provided at a location other than the surface of the sheet in the sheet, and the air is guided from at least one of the first ventilation path and the second ventilation path. a third ventilation passage that guides the air to a discharge port provided on the surface of the seat back, which is a surface located on the side of the person sitting on the seat; and a third ventilation passage that guides the air from the first ventilation passage to the third ventilation passage. a first connection port connecting the first ventilation path and the third ventilation path to adjust the ratio between the flow rate of air and the flow rate of air guided from the second ventilation path to the third ventilation path; , an adjustment unit that adjusts the ratio by adjusting the opening degree of each second connection port connecting the second ventilation path and the third ventilation path, and a control unit that controls the blower and the adjustment unit. and the control unit controls a first temperature that is a temperature in the first ventilation path, a second temperature that is a temperature in the second ventilation path, and a temperature in the third ventilation path. The ratio is adjusted by controlling the adjustment section and adjusting the opening degree based on the third temperature.

According to this, the control unit controls the adjustment unit based on the temperatures in the first ventilation passage, the second ventilation passage, and the third ventilation passage, so that the person sitting on the seat can The temperature of the air blown can be adjusted. Therefore, a comfortable air-conditioned environment can be provided to the person sitting on the seat while suppressing an increase in cost.

Further, for example, when the first temperature is a, the second temperature is b, and the third temperature is c, based on x calculated by the following formula (1), , the ratio is adjusted, and the equation (1) is x=(c-b)/(ab).

According to this, the control unit uses the temperatures in the first ventilation path, the second ventilation path, and the third ventilation path to adjust the ratio so that the person sitting on the seat feels comfortable. Can be adjusted appropriately.

Further, for example, when the absolute value of the difference between the x and the target value is greater than or equal to a first threshold, the control unit controls the x The opening degree is adjusted by changing a first amount of change so that the opening degree becomes the target value.

According to this, when the temperature of the air blown towards the person sitting on the seat is different from the temperature at which the person sitting on the seat is assumed to feel comfortable, the control unit The ratio can be adjusted appropriately so that the person in the room feels comfortable.

Further, for example, when the absolute value is less than the first threshold, when the absolute value is greater than or equal to the second threshold, the control unit may cause the x to become the target value based on the temperature-related information. The adjustment unit is controlled to change the opening degree by a second change amount that is smaller than the first change amount, and when the absolute value is less than the second threshold value, the adjustment unit is controlled so that the opening degree is not changed. Controls the adjustment section.

According to this, the control unit adjusts the temperature of the air blown to the person seated in the seat based on the difference between the temperature of the air blown toward the person seated in the seat and the temperature at which the person seated in the seat is assumed to feel comfortable. It is possible to appropriately adjust the amount of change in the temperature of the air blown to the person before and after the change.

Further, for example, the control unit acquires a detection result of a human sensor for detecting whether or not the person is sitting on the seat, and based on the x, the control unit determines whether the person is sitting on the seat. and if the determination result of whether or not the person is seated on the seat based on the x does not match the detection result, it is determined that the determination result and the detection result do not match. Outputs the information shown.

If the determination result and the detection result are different, it is assumed that a problem has occurred in which the first intake port is blocked not by a person but by dirt or the like. According to this, it is possible to notify a person that such a problem has occurred.

Further, for example, the control unit determines whether or not the person is seated on the seat based on the x, and if it is determined that the person is seated on the seat, the control unit sets a predetermined rotation speed. The number of revolutions of the blower is adjusted so that the number of revolutions of the blower becomes lower than the predetermined number of revolutions when it is determined that the person is not seated on the seat.

According to this, by lowering the rotation speed of the blower when no person is seated on the seat, unnecessary operation of the blower can be suppressed.

Further, for example, the control unit determines that the person is not seated on the seat when the x is greater than or equal to a third threshold, and when the x is less than the third threshold, the control unit determines that the person is not seated on the seat. It is determined that a person is seated.

According to this, the control unit can appropriately determine whether or not a person is seated on the seat using x.

Further, for example, the control unit adjusts the rotation speed of the blower by controlling the blower based on the first temperature, the second temperature, and the third temperature.

According to this, the control unit controls the blower based on the temperatures in the first ventilation duct, the second ventilation duct, and the third ventilation duct, so that the person sitting on the seat can You can adjust the flow rate of the air being blown. Therefore, a more comfortable air-conditioned environment can be provided to the person sitting on the seat while suppressing an increase in cost.

Further, for example, the control unit adjusts the rotation speed of the blower based on output relationship information indicating a correlation between the rotation speed of the blower and the opening degree.

According to this, the rotation speed of the blower can be adjusted appropriately.

Further, for example, a third temperature sensor that detects the third temperature is provided within the third ventilation path.

According to this, the third temperature can be appropriately set.

Further, for example, a first temperature sensor that detects the first temperature is provided within the first ventilation path.

According to this, the first temperature can be appropriately set.

Further, for example, the control unit uses, as the first temperature, a temperature detected by a cabin temperature sensor that is disposed inside the cabin of the vehicle and detects the temperature inside the cabin.

According to this, for example, if the vehicle is previously equipped with a cabin temperature sensor, the third temperature can be appropriately set without providing a separate temperature sensor.

Further, for example, a second temperature sensor that detects the second temperature is provided within the second ventilation path.

According to this, the second temperature can be appropriately set.

Further, for example, the control unit uses air conditioning temperature information indicating the temperature of air blown out by a vehicle air conditioning device disposed in the vehicle as the second temperature.

According to this, for example, if the vehicle is equipped with a vehicle air conditioner in which the temperature can be set by the user, the temperature can be set by the user or obtained from a temperature sensor installed in the vehicle air conditioner. By setting the temperature as the second temperature, the second temperature can be appropriately set without providing a separate temperature sensor.

Further, for example, the control unit may control the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The temperature-related information is corrected based on the temperature.

For example, under the same environment, such as when no one is sitting on the seat, and under the same conditions with the same opening degree and the same rotation speed of the blower, x will take a specific value. Here, if a portion of the first intake port is blocked due to clogging of the sheet or the like, x will have a value different from a specific value even if the opening degree and the rotation speed of the blower are the same. Therefore, x is calculated using the first temperature, second temperature, and third temperature when no person is seated on the seat or when a predetermined person is seated on the seat, and based on the calculation result, Correct temperature-related information. According to this, even if the state of the sheet changes due to, for example, a part of the first intake port being blocked due to clogging of the sheet, the discharge port can discharge air at an appropriate temperature. Therefore, even if the state of the seat changes, a comfortable air-conditioned environment can be provided to the person sitting on the seat.

Further, for example, the control unit may control the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The output related information is corrected based on the temperature.

According to this, even if the state of the sheet changes due to, for example, a part of the first intake port being blocked due to clogging of the sheet, the discharge port can discharge an appropriate flow rate of air. Therefore, even if the state of the seat changes, a comfortable air-conditioned environment can be provided to the person sitting on the seat.

Further, for example, the control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat, and calculates the x based on the calculated x. When x is equal to or less than a fourth threshold value that is lower than the third threshold value, a notification device is caused to notify information indicating that the sheet is clogged.

According to this, the wider the area where the first intake port is blocked due to clogging of the sheet, etc., the smaller x becomes. Therefore, for example, if the calculated x is lower than the fourth threshold, the driver of the vehicle or the like is notified of information indicating that the seat is clogged. This suppresses an increase in the rotation speed of the blower due to correction for the first intake port being blocked, and also suppresses occurrence of problems such as an increase in power consumption and noise due to the increase in the rotation speed of the blower.

Further, for example, the control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat, and calculates the x based on the calculated x. If x is different from the third threshold, the third threshold is changed to the calculated x.

According to this, even if a portion of the first intake port is blocked due to clogging of the sheet, the third threshold value is changed to an appropriate value.

Note that these general or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a non-transitory recording medium such as a computer-readable CD-ROM. It may be implemented in any combination of circuits, computer programs, or non-transitory storage media.

Hereinafter, embodiments will be specifically described with reference to the drawings.

Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are examples, and do not limit the present disclosure. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements.

Furthermore, each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same reference numerals are attached to the same constituent members.

In the following description, the front-rear direction of the seat will be referred to as the X-axis direction, and the up-down direction of the seat will be referred to as the Z-axis direction. Furthermore, the left-right direction of the seat, that is, the direction perpendicular to each of the X-axis direction and the Z-axis direction is referred to as the Y-axis direction. Further, the front side of the seat in the X-axis direction is referred to as the positive direction side, and the rear side of the seat is referred to as the negative direction side. Further, the left side when viewed from the person sitting on the seat is referred to as the Y-axis positive direction side, and the opposite side is referred to as the Y-axis negative direction side. Specifically, the right direction is the right direction of the person with respect to the traveling direction of the vehicle when the person is seated on the seat, and is the negative direction of the Y axis. Further, the left side is the left direction of the person with respect to the traveling direction of the vehicle when the person is seated on the seat, and is the positive direction of the Y axis. Further, in the Z-axis direction, the upper side of the sheet is referred to as the positive direction side, and the lower side of the sheet is referred to as the negative direction side.

In addition, expressions such as "more than" and "less than" described below are used to mean comparison based on a threshold value, etc., and may be replaced with "greater than" and "less than", etc.

(Embodiment)
[composition]
FIG. 1 is an external perspective view showing a seat 10 according to an embodiment. FIG. 2 is a diagram for explaining the internal configuration of the seat 10 according to the embodiment. Specifically, FIG. 2 is a cross-sectional view schematically showing a cross section of the sheet 10. As shown in FIG. FIG. 3 is a diagram schematically showing a specific example of the hardware configuration of the vehicle seat air conditioner 100 according to the embodiment.

Note that in FIGS. 1, 2, and 3, airflow is indicated by thick arrows. Moreover, in FIG. 1, ventilation paths such as the first ventilation path 110, the second ventilation path 120, and the third ventilation path 130 are shown by thick lines. Further, in FIG. 3, control lines connecting the ECU 190A and each device such as the actuator 172 are shown by broken lines. Further, in FIGS. 1 and 2, illustration of some of the components included in the vehicle seat air conditioner 100, such as the ECU 190A and the actuator 172, is omitted.

The vehicle seat air conditioner 100 is an air conditioner that blows air to a person sitting on the seat 10 (more specifically, the seat cushion 20). For example, the vehicle seat air conditioner 100 is arranged inside a seat 10 arranged in a vehicle such as an automobile, and has a first air conditioner provided at a location corresponding to the buttocks and thighs of a person sitting on the seat 10. An airflow is generated by sucking air through the intake port 111, and this air is directed to the head, neck, acromion, back, and lumbar region of the person sitting on the seat 10 through the discharge port 131 provided in the seat 10. Spray on the upper body of the person sitting on the seat 10.

As a result, the vehicle seat air conditioner 100 sucks air from locations corresponding to the buttocks and thighs of the person seated on the seat 10, for example, thereby creating a gap between the buttocks and thighs and the seat 10. Can suppress stuffiness. Further, the vehicle seat air conditioner 100 can cool or warm the person sitting on the seat 10 by, for example, blowing air onto the person sitting on the seat 10.

The seat 10 is a chair on which a vehicle seat air conditioner 100 is arranged and on which a person sits. That is, the vehicle seat air conditioner 100 is placed inside a vehicle in which the seat 10 is placed. The seat 10 includes a seat cushion 20, a seat back 30, and a headrest 40.

The seat cushion 20 is a seat portion on which a person sits. The seat cushion 20 has a seat surface 21 on which a person sits. In this embodiment, a first intake port 111 is provided in the seat surface 21. Further, in this embodiment, a second air intake port 121 is provided on the lower surface 22 of the seat cushion 20, which is the surface opposite to the seating surface 21.

Although not shown, in the present embodiment, the second intake port 121 includes a pipe through which air discharged from a vehicle air conditioner 230 (see FIG. 4), which is an air conditioner included in the vehicle in which the seat 10 is arranged, flows. etc., are connected. As a result, air released from the vehicle air conditioner 230 flows into the second intake port 121 .

The seat back 30 is a backrest portion (back surface portion) on which a person sitting on the seat 10 leans his or her back. The seat back 30 has a front surface 31. A person seated on the seat 10 leans his or her back so that the person's back is in contact with the front surface 31. The seat back 30 is elongated along the Z-axis direction, and is arranged to stand up from the seat cushion 20. In this embodiment, a discharge port 131 is provided on the front surface 31.

The vehicle seat air conditioner 100 mixes the air sucked in from the first intake port 111 and the air sucked in from the second intake port 121, and blows out (in other words, discharges) the mixed air from the discharge port 131. For example, by sucking in cold air whose temperature is lower than the air inside the vehicle from the second intake port 121, cold air can be blown out from the discharge port 131, that is, the interior of the vehicle can be cooled. Alternatively, for example, by sucking in hot air whose temperature is higher than the air inside the vehicle from the second intake port 121, warm air can be blown out from the discharge port 131, that is, heating the interior of the vehicle can be performed.

The headrest 40 is a headrest that supports the head of a person sitting on the seat 10. The headrest 40 is fixed to the end of the seat back 30 on the Z-axis positive direction side.

For example, inside the seat 10, the configuration of a vehicle seat air conditioner 100 shown in FIG. 3 is arranged.

As shown in FIG. 3, for example, a first temperature sensor 140 is disposed within the first ventilation passage 110, a second temperature sensor 150 is disposed within the second ventilation passage 120, and a third temperature sensor 150 is disposed within the third ventilation passage 130. A third temperature sensor 160 is arranged inside. The first ventilation passage 110 and the third ventilation passage 130 are connected to each other through the first connection port 112 so that air can move, and the second ventilation passage 120 and the third ventilation passage 130 are connected to each other through the second connection port 122. Air is movably connected thereto. ECU 190A is a computer (Electronic Control Unit) that controls actuator 172 based on the temperatures detected by each of first temperature sensor 140, second temperature sensor 150, and third temperature sensor 160. Specifically, the ECU 190A adjusts the opening degrees (hereinafter referred to as (also simply called door opening). Thereby, the ECU 190A adjusts the flow rate of air flowing from the first ventilation passage 110 to the third ventilation passage 130 and the flow rate of air flowing from the second ventilation passage 120 to the third ventilation passage 130. Further, the ECU 190A controls the flow rate of air discharged from the discharge port 131 by controlling the blower 180 provided in the third ventilation path 130. In this embodiment, when the opening degree of one of the first connection port 112 and the second connection port 122 increases (that is, the opening becomes wider), the opening degree of the other one decreases (that is, the opening becomes narrower). It is configured as follows.

FIG. 4 is a block diagram showing the configuration of the vehicle seat air conditioner 100 according to the embodiment.

As described above, the vehicle seat air conditioner 100 is an air conditioner disposed in a vehicle and used for the seat 10 having the seat back 30 and the seat cushion 20. The vehicle seat air conditioner 100 blows air by sucking in air convecting around the seat 10 and blowing the sucked air toward a person from behind.

The vehicle seat air conditioner 100 includes a first ventilation path 110, a second ventilation path 120, a third ventilation path 130, a first temperature sensor 140, a second temperature sensor 150, a third temperature sensor 160, It includes an adjustment section 170, a blower 180, and an information processing section 190.

The first ventilation path 110 is a flow path through which air sucked in by the blower 180 from the first air intake port 111 provided on the surface of the seat 10, which is the surface located on the side of the person sitting on the seat 10, passes. . The first ventilation passage 110 is built into the seat 10 (in this embodiment, the seat cushion 20).

Note that the surface of the seat 10 is, for example, a surface including the seat surface 21 and the front surface 31. In this embodiment, the surface on which the first intake port 111 is provided is the seat surface 21, but it may be the front surface 31 or the like.

The first air intake port 111 is an opening provided on the surface of the seat 10 and connected to the first ventilation path 110 so that air can move therethrough. The first intake port 111 opens toward the vehicle interior (ventilation), for example, and sucks the air inside the vehicle interior. The first intake port 111 is provided on the surface of the seat 10 that faces a person sitting on the seat 10. In this embodiment, a plurality of first intake ports 111 are provided on the seat surface 21.

Air sucked in from the first intake port 111 and passed through the first ventilation path 110 flows into the third ventilation path 130 via the first connection port 112.

The second ventilation passage 120 is an intake port different from the first intake port 111, and is a second air intake provided on a portion of the seat 10 other than the surface of the seat 10, that is, a surface of the seat 10 other than the seat surface 21 and the front surface 31. This is a flow path through which air sucked in by the blower 180 from the mouth 121 passes. The second ventilation passage 120 is a ventilation passage different from the first ventilation passage 110, and is built into the seat 10 (in this embodiment, the seat cushion 20).

Note that the portion other than the front surface of the sheet 10 is, for example, a surface including the lower surface 22 and the rear surface 32. In this embodiment, the surface on which the second intake port 121 is provided is the lower surface 22, but it may be the rear surface 32 or the like.

Further, as described above, the second air intake port 121 is connected to a flow path such as a pipe through which air is discharged from the vehicle air conditioner 230, which is an air conditioner included in the vehicle in which the seat 10 is arranged. The second intake port 121 is provided, for example, on a surface that does not face a person sitting on the seat 10.

Note that the second intake port 121 may be open toward the interior of the vehicle similarly to the first intake port 111.

The third ventilation passage 130 directs the air guided from at least one of the first ventilation passage 110 and the second ventilation passage 120 to the surface of the seat back 30 (in this embodiment), which is the surface located on the side of the person sitting on the seat 10. In other words, it is a flow path leading to a discharge port 131 provided on the front surface 31). The third ventilation passage 130 is a ventilation passage different from the first ventilation passage 110 and the second ventilation passage 120, and is built into the seat 10. In this embodiment, a part of the third ventilation passage 130 is arranged inside the seat 10, and the other part of the third ventilation passage 130 is arranged inside the seat back 30.

The discharge port 131 is an opening provided in the front surface 31 and connected to the third ventilation path 130 so that air can move therethrough. In other words, the discharge port 131 opens toward the interior of the vehicle. In this embodiment, a plurality of discharge ports 131 are provided on the front surface 31. For example, the discharge port 131 is provided on the upper side of the front surface 31.

Note that the discharge port 131 may be provided in the headrest 40. That is, a part of the third ventilation passage 130 may be provided in the headrest 40.

The first ventilation passage 110, the second ventilation passage 120, and the third ventilation passage 130 are, for example, ventilation ducts through which air passes.

The first temperature sensor 140 is a temperature sensor such as a thermistor that detects the temperature within the first ventilation path 110 (also referred to as a first temperature). For example, the first temperature sensor 140 is provided within the first ventilation path 110.

The second temperature sensor 150 is a temperature sensor such as a thermistor that detects the temperature within the second ventilation path 120 (also referred to as second temperature). For example, the second temperature sensor 150 is provided within the second ventilation path 120.

The third temperature sensor 160 is a temperature sensor such as a thermistor that detects the temperature within the third ventilation path 130 (also referred to as third temperature). For example, the third temperature sensor 160 is provided within the third ventilation path 130.

The adjustment unit 170 adjusts the flow rate of air guided from the first ventilation passage 110 to the third ventilation passage 130 (also referred to as a first flow rate) and the flow rate of air guided from the second ventilation passage 120 to the third ventilation passage 130 (first flow rate). 2 flow rate) (hereinafter simply referred to as flow rate ratio), the first connection port 112 connecting the first ventilation path 110 and the third ventilation path 130, and the second ventilation path 120. The ratio between the first flow rate and the second flow rate is adjusted by adjusting the respective opening degrees of the second connection port 122 that connects the third ventilation path 130. For example, the adjustment unit 170 adjusts the air flow path so that the air is guided from the first ventilation path 110 to the third ventilation path 130 and/or so that the air is guided from the second ventilation path 120 to the third ventilation path 130. The air flow path to the third ventilation path 130 is a switching section (ventilation path switching section) that can be switched between the first ventilation path 110 and the second ventilation path 120. In this embodiment, the adjustment section 170 is realized by a door 171 and an actuator 172.

The door 171 is a member that restricts the movement of air guided from the first ventilation path 110 to the third ventilation path 130, and also restricts the movement of the air guided from the second ventilation path 120 to the third ventilation path 130. . The door 171 is, for example, a damper, and its position and/or attitude is changed by the actuator 172 to change the opening degree of the first connection port 112 (that is, the width of the first connection port 112) and the second connection. The opening degree of the port 122 (that is, the width of the second connection port 122) is adjusted. For example, the door 171 is provided on the side of the first intake port 111 and the second intake port 121, which are upstream of the blower 180.

The actuator 172 is a drive unit for changing the position and/or attitude of the door 171. The actuator 172 is realized by, for example, a motor.

The adjustment unit 170 controls the air guided only from the first ventilation path 110, the air guided only from the second ventilation path 120, and the air guided from both the first ventilation path 110 and the second ventilation path 120. Either one is selectively guided to the third ventilation path 130. Further, the first flow rate and the second flow rate are adjusted by the adjustment unit 170, so that air is guided from the first ventilation passage 110 to the third ventilation passage 130 and air is guided from the second ventilation passage 120 to the third ventilation passage 130. The air mixed with the exposed air is guided to the third ventilation path 130.

The blower 180 is built into the seat 10 and moves air. Specifically, the blower 180 is electrically connected to the information processing unit 190 and is driven and controlled by the information processing unit 190 to intake air from at least one of the first intake port 111 and the second intake port 121. Then, the intake air is passed through at least one of the first ventilation passage 110 and the second ventilation passage 120, and further passed through the third ventilation passage 130 and discharged from the discharge port 131. The blower 180 is arranged, for example, on the downstream side of the adjustment section 170 in the ventilation path including the first ventilation path 110, the second ventilation path 120, and the third ventilation path 130. In this embodiment, the blower 180 is arranged in the third ventilation path 130 so that the air in the third ventilation path 130 flows from the first intake port 111 and the second intake port 121 toward the discharge port 131. Blow air to.

In the vehicle seat air conditioner 100, the first intake port 111, the second intake port 121, and the discharge port 131 are provided in the seat 10, and the first ventilation path 110, the second ventilation path 120, the third ventilation path 130, The blower 180 and the adjustment section 170 are built into the seat 10. In other words, since all of the components that generate the airflow that envelops the person seated on the seat 10 are provided in the seat 10, the configuration of the vehicle seat air conditioner 100 can be simplified.

Note that it is sufficient that air flows from at least one of the first intake port 111 and the second intake port 121 to the adjustment section 170, and air flows from the adjustment section 170 to the discharge port 131, and the arrangement position of the blower 180 is particularly determined. Not limited.

Further, the blower 180 may be arranged in the first ventilation path 110 and the second ventilation path 120, for example. Alternatively, the blower 180 may be arranged in the first ventilation path 110, the second ventilation path 120, and the third ventilation path 130, for example. Like these, the number of blowers 180 is not particularly limited. In addition, in this embodiment, the following description will be made assuming that one blower 180 is disposed in the third ventilation path 130.

The information processing section 190 is a control device that controls each device included in the vehicle seat air conditioner 100, such as the adjustment section 170 and the blower 180. The information processing unit 190 stores, for example, an interface to which control lines, etc. connected to each device included in the vehicle seat air conditioner 100 such as the adjustment unit 170 and external equipment such as the vehicle air conditioner 230, and programs are stored. It is realized by a computer that includes a nonvolatile memory, a volatile memory that is a temporary storage area for executing programs, and a processor that executes the programs.

The information processing section 190 includes an acquisition section 191, a control section 192, an output section 193, and a storage section 194.

The acquisition unit 191 is a processing unit that acquires various information used by the control unit 192 for processing. The acquisition unit 191 acquires detection results (temperature information) from each of the first temperature sensor 140, the second temperature sensor 150, and the third temperature sensor 160, for example.

Note that, for example, the acquisition unit 191 acquires various information from an external sensor such as the human sensor 220 and/or an external device such as the vehicle air conditioner 230 via an interface (communication interface) included in the information processing unit 190. Good too. For example, the acquisition unit 191 may acquire information such as the set temperature and/or air volume from an input device such as a touch panel that accepts input from the user. For example, the control unit 192 may control the adjustment unit 170, the blower 180, etc. based on the information received in this way.

The control unit 192 is a processing unit that controls each device included in the vehicle seat air conditioner 100, such as the blower 180 and the adjustment unit 170.

The control unit 192 controls the temperature based on a first temperature that is the temperature in the first ventilation passage 110, a second temperature that is the temperature in the second ventilation passage 120, and a third temperature that is the temperature in the third ventilation passage 130. By controlling the adjustment unit 170 to adjust the opening degree of each of the first connection port 112 and the second connection port 122, the flow rate of air guided from the first ventilation path 110 to the third ventilation path 130 and the second The ratio of the flow rate of air guided from the ventilation path 120 to the third ventilation path 130 is adjusted. That is, the control unit 192 adjusts the flow rate ratio between the first flow rate and the second flow rate based on the above-mentioned temperature information. Thereby, the control unit 192 adjusts the third temperature, that is, the temperature of the air discharged from the discharge port 131. Specifically, when the first temperature is a, the second temperature is b, and the third temperature is c, the control unit 192 calculates x (hereinafter, x is The flow rate ratio is adjusted based on the air distribution ratio (also referred to as the air distribution ratio on the first ventilation path 110 side).

x=(c-b)/(a-b) Formula (1)

Note that a>b. The units of a, b, and c may be the same, and may be ℃ or K. In addition, the above formula (1) is for calculating the air distribution ratio based on the weight of air, and when calculating the air volume ratio, the value calculated by the above formula (1) is A little different. That is, if x calculated by the above equation (1) is taken as the ratio of the volume of air, it is not an exact value and includes an error, but the error is of a degree that does not pose a problem in practice.

For example, when the absolute value of the difference between x and the target value is greater than or equal to the first threshold, the control unit 192 causes x to become the target value based on temperature-related information indicating the correlation between x and the door opening degree. The door opening degree is adjusted by a first change amount as shown in FIG.

FIG. 5 is a diagram for explaining temperature-related information according to the embodiment. Specifically, FIG. 5 is a graph showing the degree of door opening versus the air distribution ratio (x above) to achieve a predetermined temperature when a person of a predetermined physique (also referred to as a standard body type) is seated on the seat 10. It is. For example, the door opening degree of 0% means that the door 171 closes the second connection port 122, the first connection port 112 is completely open, and the second connection port 122 is completely opened. It is in a closed state. Further, for example, the door opening degree of 100% means that the door 171 closes the first connection port 112, the first connection port 112 is completely closed, and the second connection port 122 is closed. It is completely open. Further, for example, the door opening degree of 50% means that the door 171 opens both the first connection port 112 and the second connection port 122 to the same extent, and the first connection port 112 and the second connection port 122 are open to the same extent. Each of the mouths 122 is in an open state.

For example, assume that a standard-sized person is seated on the seat 10 and the door opening is 50%. In this case, it is assumed that a=33°C, b=25°C, and c=29°C. In this case, the air distribution ratio is calculated as x=(29-25)/(33-25)=0.5.

Next, it is assumed that a person whose physique is larger than the standard size is seated on the seat 10 and the door opening degree is 50%. In this case, assume that a=33°C, b=25°C, and c=27°C. In this case, the air distribution ratio is x=0.25.

Here, the control unit 192 changes the air distribution ratio from 0.25 to 0.5 by controlling the adjustment unit 170 based on the temperature-related information, for example, using the information in the graph shown in FIG. Adjust the door opening degree from 50% to 40% so that That is, the control unit 192 changes the door opening degree by 10%, which is the first amount of change, for example. Thereby, the control unit 192 can set the temperature of the air discharged from the discharge port 131 to a predetermined temperature.

For example, the storage unit 194 stores information for each temperature (for example, corresponding to each temperature (predetermined temperature) such as 24° C., 25° C., 26° C., etc.) to reach the temperature. Temperature-related information such as a graph or table showing door opening degree with respect to air distribution ratio is stored.

For example, when the absolute value is less than a first threshold, the control unit 192 opens the door so that x becomes the target value based on the temperature-related information when the absolute value is greater than or equal to the second threshold. The adjustment unit 170 is controlled to change the degree by a second change amount that is smaller than the first change amount. The first threshold is a value greater than the second threshold. For example, when the absolute value is small, in other words, when the air distribution ratio is close to the target value, in other words, the control unit 192 controls the temperature of the air discharged from the discharge port 131 to a desired temperature. If it is close, the door opening degree is changed little by little. For example, when the air distribution ratio and the target value are significantly different, the control unit 192 changes the door opening degree by a large amount (for example, 10%), and when the air distribution ratio and the target value do not differ much, the control unit 192 changes the door opening small (for example, 1%) at a time. The control unit 192 adjusts the air distribution ratio so that it approaches the target value, for example, by executing such a change every few seconds or tens of seconds.

Note that the threshold value such as the first threshold value and the amount of change (adjustment amount) in the door opening degree such as the first amount of change may be set arbitrarily. This information is stored in advance in the storage unit 194, for example.

Furthermore, when the absolute value is less than a second threshold, the control section 192 may control the adjustment section 170 so as not to change the door opening degree, that is, to maintain the current door opening degree.

Further, the control unit 192 adjusts the rotation speed of the blower 180 by controlling the blower 180 based on, for example, the first temperature, the second temperature, and the third temperature. That is, for example, the control unit 192 adjusts the flow rate (also referred to as the third flow rate) of air discharged from the discharge port 131 based on each temperature information. For example, the control unit 192 adjusts the rotation speed of the blower 180 based on output relationship information indicating the correlation between the rotation speed of the blower 180 and the degree of door opening.

FIG. 6 is a diagram for explaining output related information according to the embodiment. Specifically, FIG. 6 shows the output of the blower 180 (duty command , hereinafter also simply referred to as blower output). For example, when the blower output is 50%, the number of rotations per unit time of the motor to which the fan of the blower 180 is attached (hereinafter also simply referred to as the number of rotations of the blower 180) is the speed at which the blower 180 can execute. This means driving at a rotation speed of 50% of the maximum rotation speed. Further, for example, when the blower output is 100%, it means that the blower 180 is driven at the maximum executable rotation speed.

For example, as explained above using FIG. 5, assume that the control unit 192 adjusts the door opening degree from 50% to 40% because a person with a larger physique than a standard-sized person is seated on the seat 10. In this case, for example, the control unit 192 may adjust the blower output from 50% to 70% in order to cause the same flow rate of air (air volume) to be discharged from the discharge port 131 as when a standard-sized person is seated on the seat 10. Change to %. Thereby, the control unit 192 can set the flow rate of air discharged from the discharge port 131 to a predetermined flow rate (predetermined air volume).

For example, the storage unit 194 stores output-related information such as a graph or a table showing the blower output for each air volume relative to the door opening to achieve the air volume.

Note that the control unit 192 may adjust the blower output, that is, the rotation speed of the blower 180, based on the air distribution ratio. For example, the control unit 192 adjusts the rotation speed of the blower 180 to a predetermined rotation speed based on x. Specifically, the control unit 192 may determine whether or not a person is seated on the seat 10 based on x, and may adjust the rotation speed of the blower 180 according to the determination result. For example, the control unit 192 determines whether or not a person is seated on the seat 10 based on x, and if it is determined that a person is seated on the seat 10, the control unit 192 controls the blower to a predetermined rotation speed. If it is determined that no person is seated on the seat 10, the rotation speed of the blower 180 is adjusted to be lower than the predetermined rotation speed. For example, the control unit 192 determines that no person is seated on the seat 10 when x is equal to or greater than the third threshold value. On the other hand, for example, if x is less than the third threshold, the control unit 192 determines that a person is sitting on the seat 10. That is, for example, when x is less than the third threshold, the control unit 192 adjusts the rotation speed of the blower 180 to a predetermined rotation speed. On the other hand, for example, when x is greater than or equal to the third threshold, the control unit 192 adjusts the rotation speed of the blower 180 so that the rotation speed is less than the predetermined rotation speed. For example, in the present embodiment, the second ventilation path 120 is connected to the vehicle air conditioner 230 that sends cold air so that the second ventilation path 120 can be sent to the person seated on the seat 10. The temperature of the flowing air is set lower than that of the air flowing through the first ventilation path 110. In such a case, if no person is sitting on the seat 10, the air distribution ratio will be higher than when a person is sitting on the seat 10. Therefore, for example, when x is large, for example, in the example shown in FIG. The number of rotations of the blower 180 is reduced compared to when the air blower 180 is closed.

Note that the rotation speed of the blower 180 and the third threshold value may be set arbitrarily. This information is stored in advance in the storage unit 194, for example.

The output unit 193 is a processing unit that outputs information etc. calculated by the control unit 192. The output unit 193 outputs, for example, x calculated by the control unit 192, the temperature of the air discharged from the discharge port 131 that is predetermined according to x, the output of the blower 180, a first temperature, a second temperature, and a second temperature. 3. By outputting information such as temperature to the notification device 210, the user is notified of this information via the notification device 210.

The storage unit 194 is a storage device that stores information indicating conditions such as the above-mentioned threshold values. The storage unit 194 is realized by, for example, a flash memory, an HDD (Hard Disk Drive), or the like.

Note that the information processing unit 190 may be communicably connected to external devices such as a notification device 210, a human sensor 220, a vehicle air conditioning device 230, and a vehicle interior temperature sensor 240.

The notification device 210 is a device that notifies the user of information using sound and/or images. The notification device 210 acquires information from the information processing unit 190, for example, and outputs sound and/or images according to the acquired information. The notification device 210 is realized by an amplifier, a speaker, and/or a display, etc.

The human sensor 220 is a sensor that detects the presence of a person sitting on the seat 10. In other words, the human sensor 220 is a sensor for detecting whether a person is sitting on the seat 10 or not. The acquisition unit 191 acquires the detection result of the human sensor 220 from the human sensor 220, for example. The control unit 192 acquires the detection result, and further determines whether or not a person is seated on the seat 10 based on x, as described above. As described above, for example, the control unit 192 determines that no person is seated on the seat 10 when x is equal to or greater than the third threshold value. On the other hand, for example, if x is less than the third threshold, the control unit 192 determines that a person is sitting on the seat 10. When the determination result of whether a person is seated on the seat 10 based on x and the detection result of the human sensor 220 do not match, the control unit 192 generates information indicating that the determination result and the detection result do not match. Output. The output unit 193 notifies the user of the information using the notification device 210, for example, by outputting the information to the notification device 210.

The human sensor 220 is realized by, for example, an infrared sensor, but may be realized by any component such as a camera.

The vehicle air conditioner 230 is a system (HVAC/Heating, Ventilation and Air Conditioning) that controls air conditioning in the vehicle. The vehicle air conditioner 230 is connected to, for example, the second ventilation path 120 and supplies air (in this embodiment, cold air whose temperature is lower than the air inside the vehicle) to the second intake port 121 of the second ventilation path 120. send.

Further, the vehicle air conditioner 230 includes, for example, an operation unit that receives user operations. The operation unit is an input interface installed in the vehicle, and by accepting human operation input, it receives, for example, setting instructions for the temperature and air volume of the vehicle air conditioner 230, and transmits information indicating the received setting instructions to the information processing unit. 190. For example, the operation unit can output the set temperature in the vehicle interior and the temperature of the air blown out by the vehicle air conditioner 230 to the information processing unit 190 by accepting a human operation input. That is, the information processing unit 190 may acquire information indicating the temperature of the air supplied to the second ventilation path 120 from the vehicle air conditioner 230. In this way, for example, the control unit 192 may use air conditioning temperature information indicating the temperature of air blown out by the vehicle air conditioner 230 disposed in the vehicle as the second temperature.

Note that in this case, for example, the vehicle seat air conditioner 100 does not need to include the second temperature sensor 150.

Further, the operation unit may be realized by a touch panel display or the like disposed in the vehicle, or may be realized by a smartphone, a tablet terminal, or the like.

The cabin temperature sensor 240 is a sensor (so-called inca sensor) that detects the temperature inside the cabin of the vehicle. As described above, the vehicle in which the vehicle seat air conditioner 100 is installed may be provided with a sensor that detects the temperature inside the vehicle interior in advance. In such a case, the control unit 192 may use, as the first temperature, for example, a temperature detected by a vehicle interior temperature sensor 240 that is disposed inside the vehicle interior and detects the temperature inside the vehicle interior.

Note that in this case, for example, the vehicle seat air conditioner 100 does not need to include the first temperature sensor 140.

Although not shown in the drawings, a power supply unit having a power supply circuit or the like that supplies power to each device included in the vehicle seat air conditioner 100 such as the blower 180 and the adjustment unit 170 via the information processing unit 190 or the like may be provided. . For example, the power supply section is a DC power supply supplied from a battery (not shown). Further, for example, the power supply section is controlled by the information processing section 190 to adjust the current supplied to the blower 180 and the adjustment section 170.

Further, for example, the information processing unit 190 may include a time measurement unit such as an RTC (Real Time Clock).

[Processing procedure]
Next, the processing procedure executed by the vehicle seat air conditioner 100 will be described.

<Summary>
FIG. 7 is a flowchart showing the processing procedure of the vehicle seat air conditioner 100 according to the embodiment.

First, the control unit 192 determines whether the vehicle seat air conditioner 100 is in operation (S110). For example, the control unit 192 determines whether the adjustment unit 170 and the blower 180 are being driven.

When the control unit 192 determines that the vehicle seat air conditioner 100 is not in operation (No in S110), it starts operating in the standard mode (S120). In the standard mode, for example, when a standard-sized person is seated on the seat cushion 20, the control unit 192 controls the adjustment unit 170 and the blower 180 to blow air at a predetermined temperature and a predetermined air volume onto the person from the discharge port 131. This is the mode to control the

After step S120, or if the control unit 192 determines in step S110 that the vehicle seat air conditioner 100 is in operation (Yes in S110), the acquisition unit 191 acquires a The temperatures in the second ventilation path 120 and the third ventilation path 130, that is, the first temperature, second temperature, and third temperature are acquired (S130). For example, the acquisition unit 191 acquires temperature information indicating a first temperature from the first temperature sensor 140, acquires temperature information indicating the second temperature from the second temperature sensor 150, and acquires temperature information indicating the third temperature from the third temperature sensor 160. Obtain temperature information indicating. The acquisition unit 191 may acquire temperature information indicating the first temperature from the vehicle interior temperature sensor 240, and may acquire temperature information indicating the second temperature from the vehicle air conditioner 230.

Next, the control unit 192 calculates the air distribution ratio (that is, x described above) based on the first temperature, the second temperature, and the third temperature (S140).

Next, the control unit 192 determines whether x is less than T1 (S150). T1 is an example of the third threshold value described above. That is, the control unit 192 determines whether x is equal to or greater than the third threshold.

If the control unit 192 determines that x is not less than T1 (No in S150), that is, if it determines that no person is seated on the seat 10, the control unit 192 operates the blower 180 in the energy saving mode (S160). The energy saving mode is a mode in which the blower 180 is operated at low output. For example, in the energy saving mode, the control unit 192 controls the blower 180 to adjust the rotation speed of the blower 180 to be lower than the above-described predetermined rotation speed.

If the control unit 192 determines that x is less than T1 (Yes in S150), that is, if it determines that a person is seated on the seat 10, the control unit 192 determines that the absolute value of the difference between x and T2 is less than Th1. It is determined whether there is one (S170). T2 is an example of the target value described above, and Th1 is an example of the first threshold value described above. That is, the control unit 192 determines whether the absolute value of the difference between x and the target value is greater than or equal to the first threshold.

If the control unit 192 determines that the absolute value of the difference between x and T2 is not less than Th1 (No in S170), that is, it determines that the absolute value of the difference between x and the target value is equal to or greater than the first threshold value. If so, the door opening degree at which x becomes the target value is calculated (S180). The control unit 192 calculates the door opening degree based on, for example, x and temperature-related information. For example, when the control unit 192 changes the door opening degree before adjustment in 10% increments such as 10%, 20%, or 30%, x becomes closest to the target door opening degree. Calculate the door opening degree.

Next, the control unit 192 adjusts the door opening degree by controlling the adjustment unit 170 so that the door opening degree is the calculated door opening degree (S190).

Next, the control unit 192 controls the blower 180 to adjust the output (for example, rotation speed) of the blower 180 so that the air volume discharged from the discharge port 131 becomes the target air volume (S200).

On the other hand, if the control unit 192 determines that the absolute value of the difference between x and T2 is less than Th1 (Yes in S170), the control unit 192 determines whether the absolute value of the difference between x and T2 is less than Th2. (S210). Th2 is an example of the second threshold value described above. That is, the control unit 192 determines whether the absolute value of the difference between x and the target value is greater than or equal to the second threshold.

If the control unit 192 determines that the absolute value of the difference between x and T2 is not less than Th2 (No in S210), that is, the absolute value of the difference between x and the target value is less than the first threshold and the second If it is determined that x is equal to or greater than the threshold, the door opening degree where x becomes the target value is calculated (S220). The control unit 192 calculates the door opening degree based on, for example, x and temperature-related information. For example, when the control unit 192 changes the door opening degree before adjustment in 1% increments such as 1%, 2%, or 3%, x becomes closest to the target door opening degree. Calculate the door opening degree. Next, the control unit 192 adjusts the door opening degree by controlling the adjustment unit 170 so that the door opening degree is the calculated door opening degree (S230).

Note that when the control unit 192 determines that the absolute value of the difference between x and T2 is not less than Th2, the control unit 192 does not need to adjust the output of the blower 180.

On the other hand, if the control unit 192 determines that the absolute value of the difference between x and T2 is less than Th2 (Yes in S210), the control unit 192 ends the process and controls the adjustment unit 170 and the blower 180 to maintain the current state. control.

The vehicle seat air conditioner 100 controls the adjustment unit 170 and the blower 180 so that air at a predetermined temperature and a predetermined air volume is discharged from the discharge port 131 by periodically executing the above-described process every 10 seconds, for example. control.

<Specific example>
Next, specific processing procedures of the vehicle seat air conditioner 100 will be described using the flowchart shown in FIG. Note that the numerical values shown in the specific examples described below are just examples, and may differ from the numerical values actually used. The numerical values used in this embodiment may be set arbitrarily.

In the specific example described below, T1, which is a threshold value for determining whether or not a person is sitting on the seat 10, will be described as 0.8. Further, the description will be made assuming that T2, which is the target value of the air distribution ratio, is 0.5. Further, the description will be made assuming that Th1, which is a threshold value for determining that the discrepancy between the current air distribution ratio and the target value is large, is 0.1. Further, the description will be made assuming that Th2, which is a threshold value for determining that the current air distribution ratio has reached the target value, is 0.01.

First, it is assumed that a person with a larger physique than a standard body type sits on the seat 10 before the vehicle seat air conditioner 100 starts operating. At this time, for example, it is assumed that the person inputs an instruction to operate the vehicle seat air conditioner 100 into an input device (not shown) or the like. For example, when the vehicle seat air conditioner 100 acquires the instruction, it determines No in step S110, and starts operating in the standard mode in step S120. Here, it is assumed that the control unit 192 controls the adjustment unit 170 and the blower 180 so that the door opening degree is 50% and the blower output is 50%.

Note that immediately after the blower 180 is started, the temperature of the air in the first ventilation path 110, the second ventilation path 120, and the third ventilation path 130 may not be stable. may wait for a predetermined period of time, such as several tens of seconds, from executing step S120 to executing step S130. Time information indicating such time may be determined arbitrarily and is stored in the storage unit 194 in advance, for example.

Next, in step S130, the acquisition unit 191 determines that the first temperature (a) is 33°C, the second temperature (b) is 25°C, and the third temperature (c) is 29°C. Assume that temperature information in degrees Celsius is obtained. In this case, the control unit 192 calculates x to be 0.25 in step S140.

Next, since x is smaller than T1 (x=0.25<T1=0.8), the control unit 192 determines Yes in step S150.

Next, the control unit 192 determines No in step S170 because the absolute value of the difference between x and T2 is larger than Th1 (|x−T2|=0.25>Th1=0.1).

Next, in steps S180 to S200, the control unit 192 controls the adjustment unit 170 to open the door based on the calculated x, the temperature-related information shown in FIG. 5, and the output-related information shown in FIG. By adjusting the opening degree from 50% to 40% and controlling the blower 180, the blower output is adjusted from 50% to 70%.

Next, the vehicle seat air conditioner 100 restarts the process from step S110, for example, after 10 seconds.

Since the vehicle seat air conditioner 100 is already in operation, the control unit 192 determines Yes in step S110.

Next, assume that the acquisition unit 191 acquires temperature information in which the first temperature is 33°C, the second temperature is 25°C, and the third temperature is 28.5°C in step S130. In this case, the control unit 192 calculates x to be 0.43 in step S140.

Next, since x is smaller than T1 (x=0.43<T1=0.8), the control unit 192 determines Yes in step S150.

Next, the control unit 192 determines Yes in step S170 because the absolute value of the difference between x and T2 is smaller than Th1 (|x−T2|=0.07<Th1=0.1).

Next, the control unit 192 determines No in step S210 because the absolute value of the difference between x and T2 is larger than Th2 (|x−T2|=0.07>Th2=0.01).

Next, in steps S220 to S230, the control unit 192 controls the adjustment unit 170 to increase the door opening degree from 40% to 39% based on the calculated x and the temperature-related information shown in FIG. adjust. Further, the control unit 192 maintains the blower output at 70%.

Next, the vehicle seat air conditioner 100 restarts the process from step S110, for example, after another 10 seconds.

Since the vehicle seat air conditioner 100 is already in operation, the control unit 192 determines Yes in step S110.

Next, assume that the acquisition unit 191 acquires temperature information in which the first temperature is 33°C, the second temperature is 25°C, and the third temperature is 29°C in step S130. In this case, the control unit 192 calculates x to be 0.5 in step S140.

Next, since x is smaller than T1 (x=0.5<T1=0.8), the control unit 192 determines Yes in step S150.

Next, the control unit 192 determines Yes in step S170 because the absolute value of the difference between x and T2 is smaller than Th1 (|x−T2|=0<Th1=0.1).

Next, the control unit 192 determines Yes in step S210 because the absolute value of the difference between x and T2 is smaller than Th2 (|x−T2|=0>Th2=0.01). In this case, the control unit 192 maintains the door opening degree at 39% and the blower output at 70%.

Note that the control unit 192 may correct the temperature-related information and the output-related information based on the first temperature, the second temperature, and the third temperature when a predetermined condition is satisfied.

If no one is sitting on the seat 10, and the door opening degree and the blower output are under certain conditions, such as the door opening degree being 50% and the blower output being 50%, then the value of x is a certain value. (For example, the third threshold value is 0.8 in this embodiment).

However, if a portion of the first intake port 111 is blocked due to clogging or the like in the sheet 10, x becomes a value different from the specific value even under the specific conditions.

Therefore, for example, x in a state where no person is seated on the seat 10 is calculated, and the temperature-related information and the output-related information are corrected based on the x.

FIG. 8 is a diagram for explaining correction of temperature-related information according to the embodiment. Note that the solid line shown in the graph in FIG. 8 is the temperature-related information before correction, which is the same as the temperature-related information shown in FIG. 5, and the one-dot chain line shown in the graph in FIG. (temperature-related information after correction).

First, the control unit 192 determines whether a predetermined condition is satisfied, and if it is determined that the predetermined condition is satisfied, it starts a process (correction process) for correcting the temperature-related information and the output-related information.

The case where the predetermined condition is satisfied is, for example, a case where no person is seated on the seat 10, or a case where a predetermined person is seated on the seat 10.

For example, the control unit 192 detects that the ignition (power supply) of the vehicle is turned off, detects the opening/closing of the vehicle door, and further determines whether there is no occupant in the vehicle when the vehicle door is detected to be locked. In other words, it is determined that no person is sitting on the seat 10. The vehicle may include various sensors that perform these detections, and the acquisition unit 191 may acquire these detection results from the various sensors.

Alternatively, whether a person is sitting on the seat 10 may be determined based on the detection result of the human sensor 220.

The predetermined person may be arbitrarily determined in advance and is not particularly limited. The predetermined person is, for example, a person who knows in advance the value of x under specific conditions under normal conditions (specifically, when part of the first intake port 111 is not blocked due to clogging, etc.). be. For example, the acquisition unit 191 acquires an image of a predetermined person taken with a camera and stores it in the storage unit 194. The control unit 192 may determine whether or not a predetermined person is seated on the seat 10, for example, based on the image and the photographic result of a camera that photographs the person seated on the seat 10. . Alternatively, the acquisition unit 191 may acquire information indicating that a predetermined person is seated from an input device such as a touch panel that accepts input from a user.

Further, when receiving an instruction to start the process of correcting temperature-related information and/or output-related information from the user via the input device, the control unit 192 determines that a predetermined condition is satisfied and starts the correction process. You may.

When the control unit 192 determines that the predetermined condition is satisfied, the control unit 192 controls the adjustment unit 170 and the blower 180 so that the door opening degree and the blower output meet the specific conditions.

Note that the specific conditions may be arbitrarily determined in advance and are not particularly limited. In this embodiment, the specific conditions are a door opening degree of 50% and a blower output of 50%. Information indicating the specific condition is stored in advance in the storage unit 194, for example.

The acquisition unit 191 acquires the first temperature, the second temperature, and the third temperature in a state where the adjustment unit 170 and the blower 180 are controlled to meet the specific conditions, using the first temperature sensor 140 and the second temperature. It is acquired from the temperature sensor 150 and the third temperature sensor 160. The control unit 192 calculates x based on the acquired first temperature, second temperature, and third temperature.

Here, if x is calculated when the seat 10 is not particularly clogged, for example, as in the temperature-related information before correction indicated by the solid line in FIG. Suppose that is 0.8. On the other hand, for example, assume that the control unit 192 calculates x to be 0.7 when a predetermined condition is satisfied.

In this case, for example, the control unit 192 determines the door opening degree (70% in the example shown in FIG. 8) when x is 0.8 in the temperature-related information before correction, and the door opening degree when x is 0.7. The temperature-related information is corrected so that the opening degree (that is, 70%) is obtained. For example, the control unit 192 corrects the temperature-related information shown by the solid line in FIG. 8 so that it becomes the temperature-related information shown by the dashed-dotted line in FIG.

As a result, for example, when x is 0.5, if the temperature-related information before correction is used, the door opening degree will be calculated as 50%, but if the temperature-related information after correction is used, the door opening degree will be calculated as 57%. It is calculated as %. For example, when x is 0.25, the door opening degree is calculated to be 40% if the temperature-related information before correction is used, but the door opening degree is calculated to be 47% if the temperature-related information after correction is used. It is calculated as follows. In other words, more air is sucked in from the second intake port 121 than from the first intake port 111 after the correction than before the correction.

FIG. 9 is a diagram for explaining correction of output related information according to the embodiment. Note that the solid line shown in the graph in FIG. 9 is the output relationship information before correction, which is the same as the output relationship information shown in FIG. 6, and the one-dot chain line shown in the graph in FIG. output related information after correction).

The control unit 192 outputs an output based on x calculated using the first temperature, the second temperature, and the third temperature in a state where the adjustment unit 170 and the blower 180 are controlled to meet specific conditions. Correct related information. Specifically, the control unit 192 corrects the output related information based on the corrected temperature related information determined based on the calculated x.

For example, the control unit 192 calculates that the blower output is 50% when the door opening is 50% in the output related information before correction, whereas the blower output is calculated as 50% when the door opening is 57% in the output related information after the correction. The output related information is corrected so that the output is calculated as 50%. For example, the control unit 192 calculates that the door opening degree is 40% and the blower output is 70% in the output related information before correction, but the door opening degree is calculated as 47% in the output related information after correction. The output related information is corrected so that the blower output is calculated as 70%. In other words, for the calculated x, the blower output corresponding to the door opening degree based on the temperature-related information before correction is the same as the blower output corresponding to the door opening degree based on the temperature-related information after correction. Correct the output related information as follows.

As described above, for example, the control unit 192 controls the first temperature, the second temperature, and the third temperature when no person is seated on the seat 10 or when a predetermined person is seated on the seat 10. The temperature-related information is corrected based on. Further, for example, the control unit 192 may calculate the temperature based on the first temperature, the second temperature, and the third temperature when no person is seated on the seat 10 or when a predetermined person is seated on the seat. , correct the output related information.

For example, the control unit 192 selects one temperature relationship from among a plurality of pieces of temperature relationship information that have mutually different correlations between the calculated x and the opening degree, based on the first temperature, the second temperature, and the third temperature. Temperature-related information is corrected by selecting information. Further, for example, the control unit 192 may determine that the correlation between the rotation speed (blower output) and the opening degree (door opening degree) of the blower 180 is mutually based on the first temperature, the second temperature, and the third temperature. The output-related information is corrected by selecting one piece of output-related information from among a plurality of different pieces of output-related information. For example, the plurality of temperature-related information and the plurality of output-related information are stored in advance in the storage unit 194 in association with the value of x.

Note that the control unit 192 may change the temperature-related information and output-related information stored in the storage unit 194 using a predetermined calculation method depending on the value of x.

Further, the control unit 192 calculates x based on the first temperature, the second temperature, and the third temperature when no person is seated on the seat 10, and the control unit 192 calculates x based on the first temperature, the second temperature, and the third temperature, and 4 or less, the notification device 210 may be made to notify information indicating that the first intake port 111 is clogged.

If the calculated x is too small, it is possible that the seat 10 (specifically, the seat surface 21) is clogged and in poor condition. Therefore, in such a case, the control unit 192 informs the user of the clogging state of the sheet 10 by, for example, notifying the user of information indicating that the sheet 10 is clogged using the notification device 210. encourage improvement.

Note that the fourth threshold value may be arbitrarily determined in advance and is not particularly limited. For example, the fourth threshold value is set as 0.7. The fourth threshold may be determined as the third threshold minus a predetermined value.

Further, for example, the control unit 192 calculates x based on the first temperature, the second temperature, and the third temperature when no person is seated on the seat 10, and the calculated x is set to a third threshold ( For example, if the third threshold is different from the third threshold such as 0.8 stored in the storage unit 194, the third threshold may be changed to the calculated x. According to this, when the third threshold value is used to determine whether or not a person is seated on the seat 10, an appropriate value is set as the third threshold value even if the seat 10 is clogged, for example. .

[Effects etc.]
As described above, the vehicle seat air conditioner 100 according to the embodiment is an air conditioner used for the seat 10 arranged in a vehicle, and the seat 10 is the surface located on the side of the person sitting on the seat 10. A first ventilation path 110 is provided through which air sucked in by a blower 180 passes through a first intake port 111 provided on the surface (in this embodiment, the seat surface 21). A second ventilation path 120 through which air sucked in by the blower 180 passes through a second air intake port 121 provided on a portion of the sheet 10 other than the surface of the sheet 10 (in this embodiment, the bottom surface 22), and a first ventilation path 110. The air guided from at least one of the second ventilation passages 120 and the second ventilation passage 120 is directed to a discharge port 131 provided on the surface of the seat back 30 (in this embodiment, the front surface 31), which is the surface located on the side of the person seated on the seat 10. and a third ventilation path 130 that leads to.

In such a structure, the way in which the first air intake port 111 is closed varies depending on the way the person sits on the seat 10 or the physique of the person sitting on the seat 10 . Therefore, in a structure in which the air sucked in from the first intake port 111 and the air sucked in from the second intake port 121 are mixed to adjust the temperature and the air is discharged from the discharge port 131, the sheet 10 The temperature of the air discharged from the discharge port 131 differs depending on the way the person is sitting, their physique, and the like. For example, when a person with a larger physique than a standard-sized person sits on the seat 10, the air volume from the first air intake port 111 decreases, so the air distribution ratio changes.

Therefore, the vehicle seat air conditioner 100 includes an adjustment unit 170 that adjusts the flow rate ratio by adjusting the opening degree of the first connection port 112 and the opening degree of the second connection port 122 (that is, the door opening degree described above). and a control section 192. The control unit 192 controls the adjustment unit 170 based on the first temperature, the second temperature, and the third temperature to adjust the door opening degree, thereby adjusting the flow rate ratio.

According to this, by controlling the adjustment unit 170, the control unit 192 can detect the sitting style or physique of the person sitting on the seat 10 without using a camera or the like, and The temperature of the air blown to the person sitting on the seat 10 can be adjusted to an appropriate temperature regardless of the way the person sits or his/her physique. Therefore, the vehicle seat air conditioner 100 can provide a comfortable air-conditioned environment to the person sitting on the seat 10 while suppressing an increase in cost.

For example, the air distribution ratio when people of various physiques sit on the seat 10 is converted into a table or approximate function, and the opening of the door 171 (first connection port 112 and 2 connection port 122) and data on the amount of change in the rotational speed of the blower 180 for restoring the air volume to the original value are obtained in advance. The control unit 192 refers to the data acquired in this manner and changes the angle of the door 171 and the rotational speed of the blower 180 to maintain the same air volume and air distribution ratio as at the beginning.

Note that in order to achieve the target air distribution ratio, a method of feedback controlling the amount of opening and closing of the door 171 may be adopted.

As a result, the person sitting on the seat 10 can experience a comfortable thermal sensation regardless of the person's body shape.

Further, as described above, it is assumed that the amount of air sucked in from the first intake port 111 is likely to change depending on the physique of the person sitting on the seat 10. On the other hand, it is assumed that the amount of air sucked in from the second intake port 121 and the amount of air discharged from the discharge port 131 are unlikely to change depending on the physique of the person sitting on the seat 10. Therefore, data indicating the air distribution ratio when no person is seated on the seat 10 and when a normal-sized person is seated on the seat 10 is acquired in advance. Thereby, when the actual air distribution ratio is calculated, the control unit 192 determines the body shape or sitting state of the person seated on the seat 10, and changes the rotation speed of the blower 180 and the door opening degree using the acquired data. By doing so, the amount and temperature of the air taken in from the first intake port 111 and the amount and temperature of the air discharged from the discharge port 131 are maintained in appropriate conditions, thereby ensuring comfort. For example, as in this embodiment, when the temperature of the air sucked in from the second intake port 121, such as the air blown out by the vehicle air conditioner 230, can be adjusted, the temperature of the air discharged from the discharge port 131 may be adjusted. Can be maintained in proper condition.

Further, for example, the control unit 192 adjusts the door opening degree based on x, the target value, and temperature related information. In the present embodiment, when the absolute value of the difference between x and the target value is greater than or equal to the first threshold, the control unit 192 adjusts the door opening degree by a first change amount, and if the absolute value When the absolute value is less than the first threshold and the absolute value is greater than or equal to the second threshold, the adjustment unit 170 is controlled to change the door opening degree by a second amount of change that is smaller than the first amount of change.

If the difference between x and the target value is very large, if the door opening degree is changed greatly at once, there is a risk that the position of the door 171 will not be in an appropriate position depending on the performance of the actuator 172, and may deviate from the desired door opening degree. . Furthermore, if the difference between x and the target value is very large, if the door opening degree is changed significantly, the temperature of the air discharged from the discharge port 131 will change rapidly, making the person sitting on the seat 10 uncomfortable. I am concerned about what I feel. Therefore, the control unit 192 can adjust the door opening degree in 10% increments or 1% increments depending on the magnitude of the absolute value, that is, the magnitude of the difference between x and the target value. While appropriately adjusting the door opening degree, it is possible to prevent the person sitting on the seat 10 from feeling uncomfortable due to a sudden change in the temperature of the air discharged from the discharge port 131.

Further, for example, the control unit 192 adjusts the rotation speed of the blower 180 based on the first temperature, the second temperature, and the third temperature. For example, if x is greater than or equal to the third threshold, the control unit 192 determines that no person is seated on the seat 10, shifts to the energy saving mode, and reduces the rotation speed of the blower 180.

According to this, for example, when a large amount of air is not required to be discharged from the discharge port 131 for the purpose of circulating the air inside the vehicle, it is possible to prevent the rotation speed from increasing unnecessarily and increasing the power consumption. .

Note that in such a case, the control unit 192 may stop the blower 180.

Further, if the detection result of the human sensor 220 and the determination result of whether a person is seated on the seat 10 based on x do not match, the control unit 192 may output information indicating that they do not match. good.

Specifically, when the detection result of the human sensor 220 and the determination result by the control unit 192 do not match, the human sensor 220 determines that the seat is not occupied (that is, no person is seated on the seat 10). However, if the control unit 192 determines that a person is seated (that is, a person is seated on the seat 10) based on the air distribution ratio, for example, the first intake port 111 may be clogged with dust or the like. Therefore, air may not be properly sucked in from the first intake port 111. In such a state, even if the door opening degree is adjusted, the temperature and air volume of the air discharged from the discharge port 131 may not be in an appropriate state. Therefore, for example, the output unit 193 uses the notification device 210 to notify the user of information indicating that the first intake port 111 may be clogged, as information indicating that they do not match. According to this, the user can be prompted to clean the discharge port 131, etc., so that the temperature and air volume of the air discharged from the discharge port 131 can be prevented from becoming inappropriate.

(Other variations, etc.)
Although the present disclosure has been described above based on the embodiments, the present disclosure is not limited to the above embodiments.

For example, at least one of the first intake port 111 and the second intake port 121 may be formed in the seat back 30. Further, the second intake port 121 may be provided so as to face an HVAC discharge port (for example, a duct in the center console).

Further, for example, the second intake port 121 may be open toward the interior of the vehicle similarly to the first intake port 111. Further, for example, the first intake port 111 may be connected to the vehicle air conditioner 230.

Further, for example, the number of each of the first intake port 111, the second intake port 121, and the discharge port 131 may be one or more, and may be arbitrary.

Further, for example, the adjustment unit 170 may separately include a door for adjusting the opening degree of the first connection port 112 and a door for adjusting the opening degree of the second connection port 122. Further, for example, the mechanism for adjusting the opening degree of the first connection port 112 and the opening degree of the second connection port 122 may be a throttle valve or the like instead of a plate such as a door. According to these, even if the opening degree of one of the first connection port 112 and the second connection port 122 is changed, the opening degree of the other is not changed, so that the adjustment of each opening degree can be easily changed with accuracy.

For example, the second air intake port 121 may be placed on the rear surface 32 of the seat back 30, which is the surface opposite to the front surface 31, or on the surface of the headrest 40 that the head of the person seated on the seat 10 does not come into contact with. may be provided.

Further, for example, the vehicle seat air conditioner 100 does not necessarily have to include all the components shown in FIG. 4 . For example, the vehicle seat air conditioner 100 may not include the first temperature sensor 140. Further, for example, the vehicle seat air conditioner 100 may not include the second temperature sensor 150.

Further, for example, the vehicle seat air conditioner 100 may have a function of adjusting the air volume of the blower 180. In this case, the control unit 192 may correct the target temperature (target discharge temperature) of the air to be discharged from the discharge port 131 to a lower temperature when the air volume of the blower is set to "strong" during cooling. When the air volume of 180 is set to "weak", the target discharge temperature may be corrected to a higher temperature.

Further, for example, an air conditioner such as an air conditioner that can perform heating and cooling may be separately installed. Further, the vehicle seat air conditioner 100 may be able to directly take in the conditioned air blown out from the air conditioner.

Further, for example, the seat 10 may be equipped with a seat heater. The seat heater is provided on at least one of a seat cushion 20 and a seat back 30 of a vehicle, etc., and generates heat to warm a person's back, waist, buttocks, thighs, etc. The seat heater heats the seat 10 when set to heat, and does not heat the seat 10 when set to non-heat. The seat heater may include a base material and a heater wire. The base material may be a nonwoven fabric made of a material having elasticity, flexibility, and ductility, or a foamable resin such as cloth-like urethane. The heater wire may be a conductive wire that is electrically connected to a control unit 192 or the like for controlling power supplied to the heater wire, and generates heat using power from a power supply unit controlled by the control unit 192. The control unit 192 may be able to control the amount of heat generated by the heater wire by turning on and off the current flowing through the heater wire, or by changing the current value.

Further, for example, the second temperature may be higher than the first temperature. For example, the vehicle air conditioner 230 may send air having a higher temperature than the inside of the vehicle to the second ventilation path 120.

Furthermore, the third temperature sensor 160 may be located on the outlet 131 side with respect to the blower 180, or may be located on the first intake port 111 and second intake port 121 side.

Further, for example, each processing unit such as the control unit 192 included in the vehicle seat air conditioner 100 is typically realized as an LSI, which is an integrated circuit. These may be integrated into one chip individually, or may be integrated into one chip including some or all of them.

Further, circuit integration is not limited to LSI, and may be realized using a dedicated circuit or a general-purpose processor. An FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connections and settings of circuit cells inside the LSI may be used.

Note that each component may be configured with dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Further, all the numbers used above are exemplified to specifically explain the present disclosure, and are not limited to the numbers exemplified in the above embodiments.

Furthermore, the division of functional blocks in the block diagram is just an example; multiple functional blocks can be realized as one functional block, one functional block can be divided into multiple functional blocks, or some functions can be moved to other functional blocks. It's okay. Further, functions of a plurality of functional blocks having similar functions may be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

Further, the order in which the steps in the flowchart are executed is for illustrative purposes to specifically explain the present disclosure, and may be in an order other than the above. Further, some of the above steps may be executed simultaneously (in parallel) with other steps.

Furthermore, the methods executed by the control unit 192 described above may be used in any combination of one or more.

Other forms can be obtained by making various modifications to the above embodiments that those skilled in the art can think of, and forms can be realized by arbitrarily combining the components and functions of the above embodiments without departing from the spirit of the present disclosure. are also included in this disclosure.

(Additional note)
The following techniques are disclosed by the description of the above embodiments.

<Technology 1>
A vehicle seat air conditioner used for a seat disposed in a vehicle and having a seat back and a seat cushion,
a blower built into the seat;
a first ventilation path through which air sucked by the blower passes through a first intake port provided on the surface of the seat, which is a surface located on the side of the person sitting on the seat;
a second ventilation path through which air sucked by the blower passes from a second intake port that is different from the first intake port and is provided at a location other than the surface of the sheet on the sheet;
A third ventilation system that guides air guided from at least one of the first ventilation path and the second ventilation path to an outlet provided on the surface of the seat back, which is a surface located on the side of the person sitting on the seat. road and
In order to adjust the ratio of the flow rate of air guided from the first ventilation passage to the third ventilation passage and the flow rate of air guided from the second ventilation passage to the third ventilation passage, and adjusting the ratio by adjusting the opening degree of each of a first connection port connecting the air passage and the third ventilation passage, and a second connection opening connecting the second air passage and the third ventilation passage. Department and
A control unit that controls the blower and the adjustment unit,
The control unit is configured to control the temperature based on a first temperature that is a temperature in the first ventilation path, a second temperature that is a temperature in the second ventilation path, and a third temperature that is a temperature in the third ventilation path. A vehicle seat air conditioner in which the ratio is adjusted by controlling the adjustment unit to adjust the opening degree.

<Technology 2>
The control unit adjusts the ratio based on x calculated by the following formula (1), where the first temperature is a, the second temperature is b, and the third temperature is c. Adjust,
The vehicle seat air conditioner according to technique 1, wherein the formula (1) is x=(c-b)/(ab).

<Technology 3>
When the absolute value of the difference between the x and the target value is greater than or equal to a first threshold, the control unit sets the x to the target value based on temperature relationship information indicating a correlation between the x and the opening degree. The vehicle seat air conditioner according to technique 2, wherein the opening degree is adjusted by changing a first change amount so that the opening degree becomes .

<Technology 4>
The control unit, when the absolute value is less than the first threshold,
When the absolute value is greater than or equal to a second threshold, the opening degree is changed by a second amount of change smaller than the first amount of change based on the temperature-related information so that the x becomes the target value. controls the adjustment section,
The vehicle seat air conditioner according to technique 3, wherein the adjustment unit is controlled so as not to change the opening degree when the absolute value is less than the second threshold value.

<Technology 5>
The control unit includes:
obtaining a detection result of a human sensor for detecting whether the person is sitting on the seat;
Determining whether the person is sitting on the seat based on the x,
If the determination result of whether or not the person is seated on the seat based on the x does not match the detection result, outputting information indicating that the determination result and the detection result do not match.Technique 2~ 4. The vehicle seat air conditioner according to any one of 4.

<Technology 6>
The control unit includes:
Determining whether the person is sitting on the seat based on the x,
If it is determined that the person is sitting on the seat, adjusting the rotation speed of the blower to a predetermined rotation speed,
For a vehicle according to any one of techniques 2 to 5, wherein when it is determined that the person is not seated on the seat, the rotation speed of the blower is adjusted so that the rotation speed is lower than the predetermined rotation speed. Seat air conditioner.

<Technology 7>
The control unit includes:
If the x is greater than or equal to a third threshold, it is determined that the person is not seated on the seat;
The vehicle seat air conditioner according to technology 5 or 6, wherein if the x is less than the third threshold, it is determined that the person is sitting on the seat.

<Technology 8>
According to any one of Techniques 1 to 7, the control unit adjusts the rotation speed of the blower by controlling the blower based on the first temperature, the second temperature, and the third temperature. vehicle seat air conditioning system.

<Technology 9>
The vehicle seat according to any one of techniques 1 to 8, wherein the control unit adjusts the rotation speed of the blower based on output relationship information indicating a correlation between the rotation speed of the blower and the opening degree. Air conditioner.

<Technology 10>
The vehicle seat air conditioner according to any one of Techniques 1 to 9, wherein a third temperature sensor that detects the third temperature is provided in the third ventilation path.

<Technology 11>
The vehicle seat air conditioner according to any one of Techniques 1 to 10, wherein a first temperature sensor that detects the first temperature is provided in the first ventilation path.

<Technology 12>
The control unit according to any one of Techniques 1 to 11, wherein the control unit uses, as the first temperature, a temperature detected by a cabin temperature sensor that is arranged in a cabin of the vehicle and detects a temperature in the cabin. Vehicle seat air conditioning system.

<Technology 13>
The vehicle seat air conditioner according to any one of Techniques 1 to 12, wherein a second temperature sensor that detects the second temperature is provided in the second ventilation path.

<Technology 14>
The vehicle seat air conditioner according to any one of Techniques 1 to 13, wherein the control unit uses air conditioning temperature information indicating the temperature of air blown out by a vehicle air conditioner disposed in the vehicle as the second temperature.

<Technology 15>
The control unit is configured to control temperature based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The vehicle seat air conditioner according to technology 3 or 4, wherein the temperature-related information is corrected.

<Technology 16>
The control unit is configured to control temperature based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The vehicle seat air conditioner according to technique 9, wherein the output related information is corrected.

<Technology 17>
The control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not sitting on the seat,
If the calculated x is less than or equal to a fourth threshold that is lower than the third threshold, a notification unit is caused to notify information indicating that the first intake port is clogged. Device.

<Technology 18>
The control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not sitting on the seat,
The vehicle seat air conditioner according to technique 7, wherein if the calculated x is different from the third threshold, the third threshold is changed to the calculated x.

The present disclosure can be used, for example, in a device that controls air conditioning for a person seated on a seat disposed in a vehicle.

10 Seat 20 Seat cushion 21 Seat surface 22 Bottom surface 30 Seat back 31 Front surface 32 Rear surface 40 Headrest 100 Vehicle seat air conditioner 110 First ventilation path 111 First intake port 112 First connection port 120 Second ventilation path 121 Second intake port 122 Second connection port 130 Third ventilation path 131 Discharge port 140 First temperature sensor 150 Second temperature sensor 160 Third temperature sensor 170 Adjustment section 171 Door 172 Actuator 180 Air blower 190 Information processing section 190A ECU
191 Acquisition unit 192 Control unit 193 Output unit 194 Storage unit 210 Notification device 220 Human sensor 230 Vehicle air conditioning device 240 Vehicle interior temperature sensor

Claims (18)

A vehicle seat air conditioner used for a seat disposed in a vehicle and having a seat back and a seat cushion,
a blower built into the seat;
a first ventilation path through which air sucked by the blower passes through a first intake port provided on the surface of the seat, which is a surface located on the side of the person sitting on the seat;
a second ventilation path through which air sucked by the blower passes from a second intake port that is different from the first intake port and is provided at a location other than the surface of the sheet on the sheet;
A third ventilation system that guides air guided from at least one of the first ventilation path and the second ventilation path to an outlet provided on the surface of the seat back, which is a surface located on the side of the person sitting on the seat. road and
In order to adjust the ratio of the flow rate of air guided from the first ventilation passage to the third ventilation passage and the flow rate of air guided from the second ventilation passage to the third ventilation passage, and adjusting the ratio by adjusting the opening degree of each of a first connection port connecting the air passage and the third ventilation passage, and a second connection opening connecting the second air passage and the third ventilation passage. Department and
A control unit that controls the blower and the adjustment unit,
The control unit is configured to control the temperature based on a first temperature that is a temperature in the first ventilation path, a second temperature that is a temperature in the second ventilation path, and a third temperature that is a temperature in the third ventilation path. A vehicle seat air conditioner in which the ratio is adjusted by controlling the adjustment unit to adjust the opening degree. The control unit adjusts the ratio based on x calculated by the following formula (1), where the first temperature is a, the second temperature is b, and the third temperature is c. Adjust,
The vehicle seat air conditioner according to claim 1, wherein the equation (1) is x=(c-b)/(ab). When the absolute value of the difference between the x and the target value is greater than or equal to a first threshold, the control unit sets the x to the target value based on temperature relationship information indicating a correlation between the x and the opening degree. The vehicle seat air conditioner according to claim 2, wherein the opening degree is adjusted by a first change amount so that the opening degree is changed by a first change amount. The control unit, when the absolute value is less than the first threshold,
When the absolute value is greater than or equal to a second threshold, the opening degree is changed by a second amount of change smaller than the first amount of change based on the temperature-related information so that the x becomes the target value. controls the adjustment section,
The vehicle seat air conditioner according to claim 3, wherein the adjustment unit is controlled so as not to change the opening degree when the absolute value is less than the second threshold value. The control unit includes:
obtaining a detection result of a human sensor for detecting whether the person is sitting on the seat;
Determining whether the person is sitting on the seat based on the x,
If the determination result of whether or not the person is seated on the seat based on the x does not match the detection result, information indicating that the determination result and the detection result do not match is output. 4. The vehicle seat air conditioner according to any one of items 4 to 4. The control unit includes:
Determining whether the person is sitting on the seat based on the x,
If it is determined that the person is sitting on the seat, adjusting the rotation speed of the blower to a predetermined rotation speed,
The vehicle according to any one of claims 2 to 4, wherein when it is determined that the person is not seated on the seat, the rotation speed of the blower is adjusted so that the rotation speed is lower than the predetermined rotation speed. seat air conditioning system. The control unit includes:
If the x is greater than or equal to a third threshold, it is determined that the person is not seated on the seat;
The vehicle seat air conditioner according to claim 5, wherein if the x is less than the third threshold, it is determined that the person is sitting on the seat. The control unit adjusts the rotation speed of the blower by controlling the blower based on the first temperature, the second temperature, and the third temperature. The vehicle seat air conditioning system described. The vehicle according to any one of claims 1 to 4, wherein the control unit adjusts the rotation speed of the blower based on output relationship information indicating a correlation between the rotation speed of the blower and the opening degree. Seat air conditioner. The vehicle seat air conditioner according to any one of claims 1 to 4, wherein a third temperature sensor that detects the third temperature is provided within the third ventilation path. The vehicle seat air conditioner according to any one of claims 1 to 4, wherein a first temperature sensor that detects the first temperature is provided within the first ventilation path. According to any one of claims 1 to 4, the control unit uses a temperature detected by a cabin temperature sensor that is disposed in a cabin of the vehicle and detects a temperature in the cabin as the first temperature. vehicle seat air conditioning system. The vehicle seat air conditioner according to any one of claims 1 to 4, wherein a second temperature sensor that detects the second temperature is provided within the second ventilation path. The vehicle seat air conditioner according to any one of claims 1 to 4, wherein the control unit uses air conditioning temperature information indicating the temperature of air blown out by a vehicle air conditioner disposed in the vehicle as the second temperature. The control unit is configured to control temperature based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The vehicle seat air conditioner according to claim 3 or 4, wherein the temperature related information is corrected. The control unit is configured to control temperature based on the first temperature, the second temperature, and the third temperature in a state where the person is not seated on the seat or a state where a predetermined person is seated on the seat. The vehicle seat air conditioner according to claim 9, wherein the output related information is corrected. The control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not sitting on the seat,
The vehicle seat air conditioner according to claim 7, wherein when the calculated x is equal to or less than a fourth threshold value that is lower than the third threshold value, a notification device is caused to notify information indicating that the seat is clogged. The control unit calculates the x based on the first temperature, the second temperature, and the third temperature in a state where the person is not sitting on the seat,
The vehicle seat air conditioner according to claim 7, wherein when the calculated x is different from the third threshold, the third threshold is changed to the calculated x.

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