Vehicle seat air conditioning device

Abstract

With respect to the seat air-conditioning device (3) for a vehicle, at least a first air inlet (31a), a second air inlet (32a), and an air outlet (33a) are provided to the seat (1), and a first ventilation path (31), a portion of a second ventilation path (32), a ventilation path selection switching section (35), a blower (34), and a third ventilation path (33) are built in the seat (1). In addition, the ventilation path selection switching section (35) has a first mode in which the first ventilation path (31) is connected to the third ventilation path (33), a second mode in which the second ventilation path (32) is connected to the third ventilation path (33), and a third mode in which the first ventilation path (31) and the second ventilation path (32) are connected to the third ventilation path (33), to guide air to the third ventilation path (33). Furthermore, a control section (60) switches the mode of the ventilation path selection switching section (35) by selecting any one mode from the first mode, the second mode, and the third mode.

Description

Technical Field

[0001] This disclosure relates to a vehicle seat air conditioning unit for supplying air to a person seated in the seat. Background Technology

[0002] In recent years, efforts have been made to provide a comfortable air-conditioned environment for people sitting in seats.

[0003] For example, Patent Document 1 discloses an air conditioning device for a vehicle, comprising: an air conditioning device body mounted in a vehicle to generate blended air; a first duct connected at one end to the air conditioning device body, through which blended air supplied from the air conditioning device body flows; a second duct disposed at one end inside the seat and drawing in air at the other end, thereby drawing in air from the occupant side of the seat inward; a third duct disposed at one end inside the seat; an air supply device that supplies blended air and air drawn in from the first and second ducts to the third duct; and a blowout section capable of blowing blended air and air flowing from the other end of the third duct to the outside of the seat.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2019-131144 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] However, in conventional vehicle seat air conditioning systems, the vehicle's structure is complicated by the first duct used to connect the main body of the vehicle air conditioning system to the seat air conditioning system. Furthermore, the air conditioning temperature is determined by the blended air from the main body of the vehicle air conditioning system, and the ratio of intake to exhaust air volume is fixed, making it difficult to regulate the temperature of the air exhausted from the exhaust section. Therefore, it is sometimes impossible to provide a comfortable environment for the person seated.

[0009] Therefore, this disclosure provides a vehicle seat air conditioning device that can provide a comfortable air-conditioned environment for a person sitting in the seat while suppressing the complexity of the vehicle's structure.

[0010] Solution for solving the problem

[0011] One aspect of this disclosure relates to a vehicle seat air conditioning unit used in a vehicle seat, comprising: a blower; a ventilation path selection and switching unit; a control unit that controls the ventilation path selection and switching unit; a first ventilation path for guiding air drawn in from a first air inlet by the blower to the ventilation path selection and switching unit, wherein the first air inlet is located on the side of the seat where a person sits, i.e., the seat surface; a second ventilation path for guiding air drawn in from a second air inlet by the blower to the ventilation path selection and switching unit, wherein the second air inlet is an air inlet different from the first air inlet and is located on a part of the seat other than the seat surface; and a third ventilation path for guiding air drawn from at least one of the first ventilation path and the second ventilation path by the blower from the ventilation path selection and switching unit to an outlet located on the seat. The first air intake faces the interior of the vehicle and is positioned vertically below the exhaust outlet. At least the first air intake, the second air intake, and the exhaust outlet are located in the seat. A first ventilation path, a portion of the second ventilation path, a ventilation path selection switch, a blower, and a third ventilation path are built into the seat. The ventilation path selection switch has a first mode connecting the first ventilation path to the third ventilation path, a second mode connecting the second ventilation path to the third ventilation path, and a third mode connecting the first and second ventilation paths to the third ventilation path to guide air into the third ventilation path. The control unit switches the mode of the ventilation path selection switch by selecting any one of the first mode, the second mode, and the third mode.

[0012] Furthermore, this general or specific approach can also be achieved through any combination of systems, methods, or integrated circuits, etc.

[0013] The effects of the invention

[0014] The vehicle seat air conditioning unit disclosed herein can provide a comfortable air-conditioned environment for people sitting in the seat while reducing the complexity of the vehicle's structure. Attached Figure Description

[0015] Figure 1 This is a perspective view showing the appearance of a seat equipped with the vehicle seat air conditioning unit of Embodiment 1.

[0016] Figure 2 'a' is shown Figure 1 A perspective view of the exterior of the seat equipped with a vehicle seat air conditioning unit at line II-II, and a cross-sectional view showing the seat. Figure 2 b is Figure 2 An enlarged cross-sectional view of the frame shown by dashed lines in section a.

[0017] Figure 3 This is a block diagram showing a vehicle seat air conditioning unit according to Embodiment 1.

[0018] Figure 4 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 1.

[0019] Figure 5A This is a schematic side view showing the airflow path in the seat when the second mode is executed.

[0020] Figure 5B This is a schematic side view showing the airflow path in the seat when the third mode is executed.

[0021] Figure 5C This is a schematic side view showing the airflow path in the seat when the first mode is executed.

[0022] Figure 5D This is a schematic side view showing the airflow path in the seat when the second mode is executed in a variation of embodiment 1.

[0023] Figure 5E This is a schematic side view showing the airflow path in the seat when the third mode is executed in a variation of embodiment 1.

[0024] Figure 5F This is a schematic side view showing the airflow path in the seat when the first mode is executed in a variation of embodiment 1.

[0025] Figure 6 This is a perspective view showing the appearance of a seat equipped with a vehicle seat air conditioning unit in a modified example 2 of embodiment 1.

[0026] Figure 7 This is a block diagram showing a vehicle seat air conditioning unit in Embodiment 2.

[0027] Figure 8 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 2.

[0028] Figure 9 This is a schematic diagram illustrating the mode of selecting the switching unit by switching the ventilation path according to the target exhaust temperature.

[0029] Figure 10 This is a block diagram showing the vehicle seat air conditioning unit in Embodiment 3.

[0030] Figure 11This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 3.

[0031] Figure 12 This is a schematic diagram showing the mode of selecting the switching unit by switching the ventilation path according to the target discharge temperature, and a schematic diagram showing the relationship between elapsed time and estimated temperature.

[0032] Figure 13 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 4.

[0033] Figure 14 This is a perspective view showing the appearance of the vehicle air conditioning unit in embodiment 5, which is arranged in the vehicle interior.

[0034] Figure 15 This is a perspective view showing the appearance of the vehicle seat air conditioning unit in Embodiment 5.

[0035] Figure 16 This is a plan view showing the vehicle seat air conditioning unit in Embodiment 5.

[0036] Figure 17 This is a side view showing the vehicle seat air conditioning unit in Embodiment 5.

[0037] Figure 18 This is a block diagram showing the vehicle seat air conditioning unit in Embodiment 5.

[0038] Figure 19 yes Figure 15 A cross-sectional view of the vehicle seat air conditioning unit at the XIX-XIX line.

[0039] Figure 20 It is a three-dimensional diagram of a three-dimensional structure.

[0040] Figure 21 This is a graph showing the simulation results of the airflow velocity blown out from the nozzle.

[0041] Figure 22 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 5.

[0042] Figure 23 This is a plan view of a seat equipped with a vehicle seat air conditioning unit as shown in Modification 1 of Embodiment 5.

[0043] Figure 24 This is a cross-sectional view showing the second air intake formed at the corner of the vehicle seat air conditioning unit in Modification 2 of Embodiment 5.

[0044] Figure 25 This is a block diagram showing a vehicle seat air conditioning unit according to embodiment 6.

[0045] Figure 26 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit in Embodiment 6. Detailed Implementation

[0046] One aspect of this disclosure relates to a vehicle seat air conditioning unit used in a vehicle seat, comprising: a blower; a ventilation path selection and switching unit; a control unit that controls the ventilation path selection and switching unit; a first ventilation path for guiding air drawn in from a first air inlet by the blower to the ventilation path selection and switching unit, wherein the first air inlet is located on the side of the seat where a person sits, i.e., the seat surface; a second ventilation path for guiding air drawn in from a second air inlet by the blower to the ventilation path selection and switching unit, wherein the second air inlet is an air inlet different from the first air inlet and is located on a part of the seat other than the seat surface; and a third ventilation path for guiding air drawn from at least one of the first ventilation path and the second ventilation path by the blower from the ventilation path selection and switching unit to an outlet located on the seat. The first air intake faces the interior of the vehicle and is positioned vertically below the exhaust outlet. At least the first air intake, the second air intake, and the exhaust outlet are located in the seat. A first ventilation path, a portion of the second ventilation path, a ventilation path selection switch, a blower, and a third ventilation path are built into the seat. The ventilation path selection switch has a first mode connecting the first ventilation path to the third ventilation path, a second mode connecting the second ventilation path to the third ventilation path, and a third mode connecting the first and second ventilation paths to the third ventilation path to guide air into the third ventilation path. The control unit switches the mode of the ventilation path selection switch by selecting any one of the first mode, the second mode, and the third mode.

[0047] Accordingly, regardless of whether it has a duct connecting the vehicle air conditioning unit for conditioning the vehicle interior to the vehicle seat air conditioning unit, as in conventional vehicle seat air conditioning units, the vehicle seat air conditioning unit of this disclosure can draw in air that is convection or stagnant around the seat via a blower and blow the drawn-in air to the person from the exhaust outlet. Therefore, compared with conventional vehicle seat air conditioning units, the vehicle seat air conditioning unit of this disclosure simplifies the structure in the vehicle.

[0048] Furthermore, in this vehicle seat air conditioning system, a first air inlet is located on the seat surface, a second air inlet is located on a portion of the seat excluding the seat surface, and an outlet is also located on the seat. In other words, it has a structure for drawing in air that convects or stagnates around the seat and blowing the drawn-in air towards the person through the outlet. Moreover, in this vehicle seat air conditioning system, a first ventilation path, a portion of a second ventilation path, a ventilation path selection switch, a blower, and a third ventilation path are all integrated into the seat. That is, all components for air conditioning suitable for the person sitting in the seat are integrated into the seat. Therefore, compared to conventional vehicle seat air conditioning systems, the vehicle seat air conditioning system of this disclosure simplifies the structure.

[0049] Furthermore, in a vehicle seat air conditioning system, the ventilation path selection and switching unit allows for the discharge of air only from the first air intake, only from the second air intake, or simultaneously from both the first and second air intakes. In other words, air can be drawn in from different air intakes, such as the first and second air intakes, and each type of air, or a mixture thereof, drawn in from different intakes can be discharged independently from the exhaust outlet, thus allowing for different temperatures of the air discharged from the exhaust outlet. Therefore, according to the vehicle seat air conditioning system, air conditioning suitable for the occupant of the seat can be achieved by switching the air discharged from the seat's exhaust outlet.

[0050] Therefore, this vehicle seat air conditioning unit can provide a comfortable air-conditioned environment for people sitting in the seat while reducing the complexity of the vehicle's structure.

[0051] In particular, since the first and second air inlets are positioned vertically below the exhaust outlet, for example, the first air inlet can be located at a position corresponding to the lower limbs, the second air inlet at a position unlikely to affect the person's body, and the exhaust outlet at a position corresponding to the upper body. In this case, airflow can be generated by drawing in air from at least one of the first and second air inlets, and air can be blown towards the person by discharging the drawn-in air from the exhaust outlet. This generates an airflow that surrounds the person's body, thus allowing the air-conditioned air to remain around the person seated, providing a comfortable air-conditioned environment with minimal air conditioning energy.

[0052] Furthermore, the ventilation path selection switching unit has a first mode that connects the first ventilation path to the third ventilation path.

[0053] Accordingly, for example, air drawn in through the first air inlet can be blown toward a person's upper body. Additionally, air blown toward a person's upper body by air being expelled from the exhaust outlet is drawn in through the first air inlet of the seat surface; that is, air is drawn into the first air inlet from the exhaust outlet through the upper body of the person sitting in the seat. Therefore, an airflow can be generated that surrounds the person's upper body, hips, and thighs.

[0054] For example, when a person sits for a long time in a vehicle's air conditioning system during cooling mode, or when the air conditioning system is in heating mode, the buttocks and thighs in contact with the seat can sometimes become hot and stuffy due to sweating. However, in a vehicle seat air conditioning system, by drawing in ambient air through the first air intake, airflow is generated around the buttocks and thighs, thus suppressing the stuffiness in these areas. Therefore, a comfortable air-conditioned environment can be provided for the person sitting in the seat.

[0055] Furthermore, the ventilation path selection switching unit has a second mode that connects the second ventilation path to the third ventilation path.

[0056] Accordingly, for example, air drawn in from the second air intake can be blown toward the upper body of a person. Therefore, when the second air intake is positioned to draw in air exhausted from the vehicle's air conditioning unit (e.g., under the seat), a comfortable air-conditioned environment can be provided to the person sitting in the seat by rapidly blowing cool and warm air toward the upper body of the person.

[0057] For example, in situations with high outside temperatures and abundant sunshine, the interior temperature of the vehicle will rise immediately after a person enters. According to the vehicle seat air conditioning system disclosed herein, air drawn in from the second air intake can be blown towards the upper body of a person sitting in the seat. Especially during the cooling operation of the vehicle air conditioning system, cooled air can be drawn in from the second air intake, thus keeping the person sitting in the seat cool.

[0058] Furthermore, in situations where the outside temperature is low, the interior temperature of the vehicle will drop immediately after a person enters. According to the vehicle seat air conditioning system disclosed herein, air drawn in through the second air intake can be directed towards the upper body of a person seated in the seat. Especially when the vehicle air conditioning system is operating in heating mode, heated air can be drawn in through the second air intake, thus keeping the person seated in the seat warm. Therefore, according to this vehicle seat air conditioning system, a comfortable air-conditioned environment can be provided for a person seated in the seat.

[0059] Furthermore, the ventilation path selection switching unit has a third mode that connects the first ventilation path and the second ventilation path to the third ventilation path.

[0060] Accordingly, for example, air drawn in from the first and second air inlets can be blown towards a person's upper body. Additionally, air blown towards a person's upper body by air being discharged from the exhaust port is drawn in from the first air inlet of the seat surface; that is, it is drawn in from the exhaust port through the upper body of the person sitting in the seat. Therefore, an airflow can be generated that surrounds the person's upper body, hips, and thighs.

[0061] For example, there exists a situation where, during the cooling operation of a vehicle's air conditioning system, the temperature of the air blown out by the system is sufficiently reduced, but the temperature inside the vehicle is not sufficiently reduced. According to the vehicle seat air conditioning system of this disclosure, for a person sitting in the seat, air drawn in from the surrounding area of ​​the seat through a first air intake and air cooled by the vehicle's air conditioning system drawn in through a second air intake are mixed and blown towards the upper body of the person. Therefore, excessive cooling of the upper body of the person sitting in the seat can be prevented, and cooling can be achieved slowly. Furthermore, by drawing in surrounding air through the first air intake, airflow can be generated around the person's buttocks and thighs, thus suppressing stuffiness in these areas. Therefore, according to this vehicle seat air conditioning system, a comfortable air-conditioned environment can be provided for a person sitting in the seat.

[0062] Furthermore, the control unit switches the mode of the ventilation path selection switching unit by selecting any one of the first mode, the second mode, and the third mode.

[0063] Accordingly, the control unit can select any mode from the first mode, the second mode, and the third mode, thus providing an air-conditioned environment suitable for the person sitting in the seat.

[0064] In addition, another aspect of the present disclosure relates to a vehicle seat air conditioning device that further includes: a first temperature sensor that detects the temperature inside the vehicle; and a second temperature sensor that detects the surface temperature of a person sitting in the seat, wherein the control unit switches the mode of the ventilation path selection switching unit based on information indicating a first temperature detected by the first temperature sensor and information indicating a second temperature detected by the second temperature sensor.

[0065] Therefore, a first temperature, which is the temperature inside the vehicle, and a second temperature, which is the surface temperature of a person sitting in the seat, can be detected. Thus, the mode of the ventilation path selection switching unit can be automatically switched based on the first and second temperatures, thereby providing a more comfortable air-conditioned environment for the person sitting in the seat.

[0066] In another embodiment of the vehicle seat air conditioning device disclosed herein, when the first temperature detected by the first temperature sensor is above the set cabin temperature and the second temperature detected by the second temperature sensor is above the first surface temperature, the control unit causes the ventilation path selection switching unit to execute the second mode.

[0067] For example, when the outside temperature is high and there is a lot of sunshine, the temperature inside the vehicle will rise immediately after a person enters. At this time, the first temperature is above the set interior temperature that is intended to make people feel comfortable. Furthermore, there is a situation where, if the first surface temperature is set to a temperature that makes a person sitting in the seat feel very hot, the second temperature is above the first surface temperature.

[0068] Therefore, under the above conditions, when the vehicle's air conditioning system is operating in cooling mode, air cooled by the air conditioning system can be drawn in through the second air intake, thus making the person sitting in the seat feel cool. Consequently, this vehicle seat air conditioning system can provide a more comfortable air-conditioned environment for the person sitting in the seat.

[0069] In another embodiment of the vehicle seat air conditioning device disclosed herein, when the first temperature detected by the first temperature sensor is above the set cabin temperature and the second temperature detected by the second temperature sensor is below the first surface temperature but above the second surface temperature, the control unit causes the ventilation path selection switching unit to execute the third mode, wherein the second surface temperature is a temperature lower than the first surface temperature.

[0070] For example, there are situations where, even when the outside temperature is high and there is a lot of sunshine, although the cooling provided by the vehicle's air conditioning system begins to work, the temperature inside the vehicle (the first temperature) is still above the set interior temperature. Furthermore, there are situations where, when a temperature range below the first surface temperature and above the second surface temperature is set to a temperature that makes a person sitting in the seat feel hot, the second temperature falls within that temperature range.

[0071] Accordingly, under the above conditions, when the vehicle's air conditioning system is operating in cooling mode, the vehicle seat air conditioning unit can draw in air from the vehicle interior that has not been fully cooled (e.g., ambient temperature air) and air that has been cooled by the air conditioning unit. The vehicle seat air conditioning unit mixes the ambient temperature air and the cooled air inside the vehicle interior and blows the mixed air towards the person sitting in the seat, thus providing a moderately cool environment without making the person sitting in the seat too cold. Therefore, according to this vehicle seat air conditioning unit, a more comfortable air-conditioned environment can be provided for the person sitting in the seat.

[0072] In another embodiment of the vehicle seat air conditioning device disclosed herein, when the first temperature detected by the first temperature sensor is lower than the set cabin temperature, and the second temperature detected by the second temperature sensor is lower than the second surface temperature but higher than the third surface temperature, the control unit causes the ventilation path selection switching unit to execute the first mode, wherein the third surface temperature is a temperature lower than the second surface temperature.

[0073] For example, there is a situation where the temperature inside the vehicle (first temperature) becomes lower than the set temperature inside the vehicle due to the stable cooling provided by the vehicle's air conditioning system, and the temperature range that is lower than the second surface temperature and higher than the third surface temperature is set to a temperature that makes the person sitting in the seat feel slightly warm or comfortable, the second temperature is within the aforementioned temperature range.

[0074] Accordingly, under the above conditions, when the vehicle's air conditioning system is operating in cooling mode, the vehicle's seat air conditioning system draws in ambient air from the first air intake, generating an airflow around the person's buttocks and thighs. Furthermore, the vehicle's seat air conditioning system can blow the drawn-in air towards the person, thus delivering air to the person seated. Therefore, according to this vehicle's seat air conditioning system, an airflow surrounding the person seated is generated, thereby providing a more comfortable air-conditioned environment.

[0075] In addition, in another aspect of the vehicle seat air conditioning device disclosed herein, a first temperature sensor is provided to detect the temperature inside the vehicle. The control unit acquires information indicating the temperature inside the vehicle detected by the first temperature sensor and information indicating a preset target temperature. Based on the difference between the temperature inside the vehicle and the target temperature indicated by the information, a target exhaust temperature is calculated. The mode of the ventilation path selection switching unit is switched according to the calculated target exhaust temperature.

[0076] Therefore, the mode can be switched according to the target temperature, so as long as the target temperature is set to a person's preferred temperature, a more comfortable air-conditioned environment can be provided for the person sitting in the seat.

[0077] In another embodiment of the present disclosure, in a vehicle seat air conditioning unit, the control unit switches the mode of the ventilation path selection switching unit based on a table showing the correlation between the temperature inside the vehicle and the elapsed time of continuous exhaust of air conditioning air from the vehicle air conditioning unit installed in the vehicle.

[0078] Accordingly, the mode of the ventilation path selection switch can be automatically switched based on the table. As a result, the vehicle seat air conditioning unit can be controlled independently of the vehicle air conditioning unit.

[0079] In another embodiment of the present disclosure, the vehicle seat air conditioning device has a seat backrest, and the exhaust outlet is formed on the seat backrest.

[0080] Therefore, as long as air is expelled from the exhaust vent, it can blow air towards a person's upper body. Thus, it can cool or warm the upper body, and in effect, cool or warm the entire body. This provides a more comfortable air-conditioned environment for those seated in the chair.

[0081] In another embodiment of the present disclosure, the first air inlet is formed at the center and outer edge of the seat surface.

[0082] Accordingly, by drawing air in through the first air inlet formed in the center of the seat between the buttocks and thighs and the seat surface, stuffiness in the buttocks and thighs can be suppressed. Furthermore, the first air inlet formed on the outer edge of the seat surface is located in a position not easily covered by the buttocks and thighs, thus allowing air from around the seat to be drawn in. For example, even if air cannot be drawn in through the first air inlet formed in the center of the seat surface, air can be drawn in through the first air inlet formed on the outer edge of the seat surface, thus allowing air to be expelled through the exhaust outlet.

[0083] In another embodiment of the vehicle seat air conditioning device disclosed herein, the outer edge is at least one of the rear side and the front end of the seat surface.

[0084] Therefore, even when a person is seated, the first air intake located at the outer edge is not easily blocked by the person's buttocks and thighs. Thus, the first air intake, which can be reliably ensured to not be blocked by the person's buttocks and thighs, can further suppress the possibility of air intake failure.

[0085] In another embodiment of the present disclosure, the vehicle seat air conditioning device is configured with the outlet located at a position corresponding to at least one of the following body parts: head, neck, shoulder, back, and waist.

[0086] Therefore, by simply expelling air from the outlet, it can direct air towards at least one of the following areas: head, neck, shoulders, back, and waist. This allows for localized cooling or warming of the body, and can also provide overall cooling or warming. Consequently, it can provide a more comfortable air-conditioned environment for those seated in the chair.

[0087] In another embodiment of the vehicle seat air conditioning device disclosed herein, the driver's seat and the passenger seat, which are seats of the vehicle, have seat backs. The second air intake is formed at any of the following locations: the side portion of the seat back of the driver's seat facing the passenger seat, the back portion of the seat back of the driver's seat opposite to the surface portion that contacts the person sitting in the same seat, and the corner portion of the seat back of the driver's seat that extends from the side portion to the back portion; or the second air intake is formed at any of the following locations: the side portion of the seat back of the passenger seat facing the driver, the back portion of the seat back of the passenger seat opposite to the surface portion that contacts the person sitting in the same seat, and the corner portion of the seat back of the passenger seat that extends from the side portion to the back portion.

[0088] Therefore, the second air intake can be positioned on the side, rear, or corner, ensuring a high degree of flexibility in its configuration. Furthermore, it can be formed not only on the sides of the driver's and passenger's seats, but also extending to the rear of the driver's and passenger's seats, thus maximizing the opening area of ​​the second air intake. Consequently, the second air intake can more efficiently draw in air blown from the air conditioning unit.

[0089] Furthermore, the exhaust vents of the vehicle's air conditioning unit (hereinafter sometimes referred to as the air conditioning unit exhaust vents) are typically located on the vehicle's instrument panel. The air conditioning unit exhaust vents blow conditioned air, i.e., air-conditioned air, toward the driver's seat and passenger seat.

[0090] In the vehicle seat air conditioning device disclosed herein, the second air intake is located between the driver's seat and the passenger seat. Therefore, the air conditioning air blown out from the exhaust outlet of the air conditioning unit is drawn in through the second air intake after conditioning the surrounding air. As a result, the air conditioning efficiency in the vehicle interior is not easily reduced.

[0091] In addition, since the second air intake is located in a space between the exhaust outlet of the vehicle air conditioning unit and the second air intake, where it is unlikely that people will be present, the air conditioning air blown out from the exhaust outlet of the air conditioning unit is less likely to be obstructed by people sitting in the driver's seat and the front passenger seat.

[0092] Therefore, in the vehicle seat air conditioning device disclosed herein, the reduction in air conditioning efficiency in the vehicle interior can be suppressed, and air blown out from the vehicle air conditioning unit can be efficiently drawn in and blown towards the person.

[0093] In particular, the second air intake can draw in ambient air containing air conditioning regardless of external factors such as body size or seating posture. Therefore, by reusing the air conditioning air from the vehicle's air conditioning unit, energy consumption of the vehicle can be reduced.

[0094] Furthermore, this structure eliminates the need for piping to connect the vehicle's air conditioning unit to the vehicle's seat air conditioning unit, thus minimizing the increase in manufacturing costs for the vehicle's seat air conditioning unit. Additionally, the elimination of piping prevents the vehicle interior from becoming cramped.

[0095] In another embodiment of the present disclosure, a vehicle seat air conditioning device is provided in the vehicle between the driver's seat and the passenger seat, and a second air intake is positioned higher than the center console.

[0096] Therefore, the second air intake can be positioned at a certain height, so that the air conditioning unit's exhaust outlet and the second air intake are not easily obstructed by obstacles such as the center console. Thus, the second air intake can efficiently draw in air blown out from the air conditioning unit.

[0097] In another embodiment of the vehicle seat air conditioning device disclosed herein, the driver's seat and the passenger seat each have a structure in which a seat frame is built into the seat back. When viewed along the arrangement direction of the driver's seat and the passenger seat, the second air intake overlaps with the seat frame, or the second air intake is located on the back side of the seat frame, opposite to the surface portion that is in contact with the person sitting in the driver's seat.

[0098] Therefore, it ensures cushioning in the driver's and passenger's seats when people are seated, thus reducing discomfort. Furthermore, it reduces the possibility of hand movements obstructing air intake.

[0099] In another embodiment of the present disclosure, the portion of the second ventilation path between the second air inlet and the blower is inclined upwards from the second air inlet toward the vertically upward side.

[0100] Therefore, even if a person spills a beverage, the liquid is unlikely to enter through the second air inlet. This helps to prevent malfunctions of electrical components such as the blower located inside the second ventilation path.

[0101] In addition, in another embodiment of the vehicle seat air conditioning device disclosed herein, a breathable sleeve is provided at the second air inlet.

[0102] Therefore, it is possible to ensure the air intake performance from the second air intake and to avoid compromising the aesthetics of the driver's seat and passenger seat where the second air intake is located.

[0103] In another embodiment of the vehicle seat air conditioning device disclosed herein, the second air inlet is formed at the corner, and the sleeve is disposed at the corner, wherein the breathability of the portion of the sleeve corresponding to the side portion of the corner is higher than the breathability of the portion of the sleeve corresponding to the back portion of the corner.

[0104] Therefore, by forming a second air intake at the corner, sufficient airflow can be ensured. Furthermore, dust sometimes gets drawn in from the back side of the corner, stirred up by the feet of people sitting in the rear seats. Therefore, the vehicle seat air conditioning unit can suppress dust intake by reducing the permeability of the back side of the corner.

[0105] In addition, another aspect of the present disclosure relates to a vehicle seat air conditioning device having blades disposed at the outlet for guiding air blown from the outlet in a predetermined direction.

[0106] Therefore, air can be directed towards the person sitting in the driver's or passenger's seat, following their posture. This provides a more comfortable air-conditioned environment for the person in the driver's or passenger's seat.

[0107] In another embodiment of the vehicle seat air conditioning device disclosed herein, the blades are positioned vertically above the center in the height direction of the outlet.

[0108] Therefore, even in confined spaces such as the car interior, the airflow axis blowing out from the exhaust outlet via the Coanda effect can be controlled. This allows air to be directed towards the person seated in the driver's or passenger's seat, aligning with their posture. Consequently, a more comfortable air-conditioned environment can be provided for the occupants of the driver's and passenger's seats.

[0109] In addition, another aspect of the vehicle seat air conditioning device disclosed herein also includes an outlet temperature sensor, which is electrically connected to the control unit and disposed near the outlet. The control unit controls the blower based on the temperature detected by the outlet temperature sensor.

[0110] Therefore, it is possible to detect the temperature of the air blown towards the people sitting in the driver's and passenger's seats, and thus adjust the airflow of the blower appropriately according to the temperature. As a result, a more comfortable air-conditioned environment can be provided for the people sitting in the driver's and passenger's seats.

[0111] In another embodiment of the vehicle seat air conditioning device disclosed herein, if the temperature detected by the outlet temperature sensor is above a threshold, the control unit sets the air volume of the blower to a first air volume; if the temperature detected by the outlet temperature sensor is below the threshold, the control unit sets the air volume of the blower to a second air volume, wherein the second air volume is a smaller air volume than the first air volume.

[0112] Accordingly, for example, during refrigeration operation, if the temperature of the air blown to people sitting in the driver's seat and the passenger seat is low, the air volume of the blower can be reduced, or if the temperature of the air blown to people sitting in the driver's seat and the passenger seat is high, the air volume of the blower can be increased.

[0113] In another aspect of the vehicle seat air conditioning device disclosed herein, when the mode of the ventilation path selection switching unit is maintained for a first predetermined period, the control unit controls the blower based on the temperature detected by the outlet temperature sensor.

[0114] Accordingly, in order to balance control based on the first temperature sensor and control based on the second temperature sensor, prioritizing the control based on the first and second temperature sensors, control of the air supply fan based on the exhaust outlet temperature sensor can be implemented once the system stabilizes. Therefore, this vehicle seat air conditioning unit can perform more precise adjustments to temperature and airflow. As a result, a more comfortable air-conditioned environment can be provided.

[0115] In addition, in another aspect of the present disclosure, a vehicle seat air conditioning device includes a three-dimensional structure disposed within at least one of the first ventilation path, the second ventilation path, and the third ventilation path.

[0116] Therefore, even when people are seated in the driver's or passenger's seat, the second ventilation path can guide air without compression. Thus, the second ventilation path can guide air from the second air intake to the exhaust outlet via a blower. This provides a more comfortable air-conditioned environment for people seated in the driver's and passenger's seats.

[0117] In another embodiment of the vehicle seat air conditioning device disclosed herein, when the ventilation path selection switching unit is in a mode other than the second mode and the temperature change detected by the first temperature sensor and the second temperature sensor is within a specified temperature range throughout the second specified period, the control unit temporarily switches the ventilation path selection switching unit to the second mode.

[0118] Therefore, since air is not drawn in from the seat surface only in the second mode, switching from a mode other than the second mode to the second mode temporarily eliminates the airflow surrounding the body. Thus, the person sitting in the seat can easily perceive the change in airflow. Furthermore, if a stable temperature is maintained, potentially relieving the tension of the person sitting in the seat, air with a temperature difference can be blown out from the exhaust vent. Therefore, the vehicle seat air conditioning system can alert the person sitting in the seat.

[0119] Furthermore, the embodiments described below are all general or specific examples. The numerical values, shapes, materials, constituent elements, the arrangement and connection methods of constituent elements, steps, and the order of steps shown in the following embodiments are examples and are not intended to limit this disclosure. In addition, the constituent elements in the following embodiments that are not described in the independent claims are described as arbitrary constituent elements.

[0120] Furthermore, the figures are schematic diagrams and are not necessarily strictly illustrated. Also, the same reference numerals are used for the same constituent components in each figure. Additionally, in the following embodiments, terms such as "approximately rectangular" are used. For example, "approximately rectangular" means not only that it is exactly rectangular, but also that it is substantially rectangular, i.e., it includes, for example, a few percent error. Furthermore, "approximately rectangular shape" refers to a rectangular shape within the scope that achieves the effects of this disclosure. The same applies to other expressions using "abbreviated".

[0121] In the following explanation, the fore-and-aft direction of the seat is referred to as the X-axis, and the up-and-down direction is referred to as the Z-axis. Furthermore, the left-and-right direction of the seat, that is, the direction perpendicular to both the X-axis and Z-axis, is referred to as the Y-axis. Additionally, the front side of the seat in the X-axis direction is referred to as the positive side, and the rear side in the X-axis direction is referred to as the negative side. Furthermore, the left side of the seat in the Y-axis direction (from...) Figure 1 The right side (near the front) is called the positive direction side, and the opposite side is called the negative direction side. Furthermore, the right side refers to the person's right side relative to the vehicle's direction of travel when seated, which is the negative Y-axis direction. The left side refers to the person's left side relative to the vehicle's direction of travel when seated, which is the positive Y-axis direction. Additionally, the upper part of the seat along the Z-axis is called the positive direction side, and the lower part along the Z-axis is called the negative direction side. Figure 2 The same applies to subsequent diagrams.

[0122] The implementation method will now be described in detail with reference to the accompanying drawings.

[0123] (Implementation Method 1)

[0124] <Structure: Seat 1>

[0125] Figure 1 This is a perspective view showing the appearance of the seat 1 equipped with the vehicle seat air conditioning unit 3 according to embodiment 1. Figure 1 In the diagram, solid arrows correspond to air guided to the first ventilation path 31, dashed arrows correspond to air guided to the second ventilation path 32, and dotted-dash arrows correspond to air guided to the third ventilation path 33. Figure 2 'a' is shown Figure 1 A perspective view of the exterior of the seat 1 equipped with a vehicle seat air conditioning unit 3 at line II-II and a cross-sectional view showing the seat 1. Figure 2 b is Figure 2 An enlarged cross-sectional view of the frame shown by dashed lines in section a. Figure 3 This is a block diagram showing the vehicle seat air conditioning unit 3 in Embodiment 1.

[0126] like Figure 1 and Figure 2 As shown, a seat 1, such as that in a vehicle, cools or warms a person sitting in it by blowing air towards their upper body. Specifically, the seat 1 cools or warms a person's body by blowing air towards their head, neck, shoulders, back, and waist through an outlet 33a. Additionally, it can generate airflow by drawing air in from areas corresponding to the buttocks and thighs, thereby reducing stuffiness between the buttocks and thighs and the seat 1. This seat 1 includes a seat 10 for seating, a seat back 13, a headrest 15, a vehicle seat air conditioning unit 3, and a power supply unit 70.

[0127] [Section 10]

[0128] like Figure 1 and Figure 2 As shown in Figure a, the seat portion 10 is a seat cushion for supporting the buttocks and thighs of a person sitting on the seat 1. The seat portion 10 has a first seat cushion 11a, which acts as a cushioning element, and a first seat cover 11b covering the first seat cushion 11a.

[0129] The first seat cushion 11a is made of, for example, polyurethane foam, and constitutes the main body of the seat. The first seat cushion 11a is a generally rectangular plate with thickness, arranged in a posture that is approximately parallel to the XY plane. The first seat cushion 11a is used to support the buttocks and thighs of the person sitting on it.

[0130] A first ventilation path 31 is provided in the first seat cushion 11a, which is used to guide air drawn in from the first vent 12a of the seat surface 11c, which is the surface of the positive Z-axis direction of the first seat cover 11b.

[0131] In addition, Figure 2Example a shows a one-to-one correspondence between the first vent 12a and the first ventilation path 31, but is not limited to this structure. That is, in Figure 2 The part shown by the dashed line in 'a', such as Figure 2 As shown in the enlarged view of b, it can also be a structure with multiple first vents 12a formed for one first ventilation path 31. Figure 2 In case b, each of the multiple first vents 12a corresponds to one first ventilation path 31. For example, a sponge-like cushioning member 11e may be disposed between the first seat cushion 11a and the first seat cover 11b in such a way that multiple first vents 12a are connected for one first ventilation path 31.

[0132] The first air intake 31a is formed on the seat surface 11c, which is the portion of the seat 1 on the side where a person sits. That is, the first air intake 31a opens towards the interior of the vehicle.

[0133] In this embodiment, a plurality of first air inlets 31a are formed. Specifically, the first air inlets 31a are formed on the central portion 11c1 and the outer edge portion 11c2 of the seat surface 11c on the side where the person sits. In this embodiment, the outer edge portion 11c2 is located on the positive Y-axis side of the first seat cushion 11a relative to the central portion 11c1 and on the negative Y-axis side of the first seat cushion 11a relative to the central portion 11c1. A plurality of first air inlets 31a are formed along the X-axis direction in the central portion 11c1, and the first air inlets 31a of the outer edge portions 11c2 are respectively disposed on the positive Y-axis side and the negative Y-axis side relative to the first air inlets 31a of the central portion 11c1, and a plurality of them are formed along the X-axis direction. That is, on the surface of the first seat cushion 11a on the positive Z-axis side, a plurality of first air inlets 31a are formed along the X-axis direction in multiple rows arranged along the Y-axis direction.

[0134] Additionally, a second ventilation path 32 is provided in the first seat cushion 11a for guiding air drawn in from the second air inlet 32a formed on the surface in the negative direction of the Z-axis.

[0135] Furthermore, the second air intake 32a is formed on a portion of the seat 1 other than the side where the person sits, i.e., the seat surface 11c. That is, the second air intake 32a opens towards the vehicle interior. In this embodiment, the second air intake 32a is formed on a predetermined portion of the seat 1 other than the seat surface 11c. Moreover, in this embodiment, an example has been described where the second air intake 32a also opens towards the vehicle interior in the same way as the first air intake 31a, but this structure is not limited to this. For example, the second air intake 32a could also be a structure connected to an air conditioning unit (not shown) mounted on the vehicle.

[0136] In addition to the first ventilation path 31 and the second ventilation path 32, which are components of the vehicle seat air conditioning unit 3, the first seat cushion 11a also includes a part of a third ventilation path 33, a blower 34, and a ventilation path selection and switching unit 35, which are components of the third ventilation path 33. Air is driven by the blower 34 to flow into at least one of the first ventilation path 31 and the second ventilation path 32 within the first seat cushion 11a. The first ventilation path 31 and the second ventilation path 32 formed in the first seat cushion 11a can be either simple through holes or ventilation ducts.

[0137] The first seat cover 11b is a cover used to cover the first seat cushion 11a. The first seat cover 11b is, for example, a leather cover, a fiber cover, etc.

[0138] A first vent 12a for drawing in air is formed in the first seat cover 11b. The first vent 12a is formed on the side of the seat 10 where the person sits (the side facing the positive Z-axis), i.e., the seat surface 11c, at a position corresponding to the first air inlet 31a of the vehicle seat air conditioning unit 3. In this embodiment, a plurality of first vents 12a are formed in the first seat cover 11b along the X-axis direction, and in a plurality of columns arranged along the Y-axis direction. Figure 1 In the middle, the arrow of the solid line corresponds to the first vent 12a.

[0139] Air drawn in through the first vent 12a is directed to the first air intake 31a of the vehicle seat air conditioning unit 3, thereby being drawn in through the first air intake 31a and directed to the first ventilation path 31. Therefore, the first vent 12a also serves as an air intake for drawing in air convecting on the seat surface 11c by the suction force generated from the first air intake 31a by the drive of the vehicle seat air conditioning unit 3. Furthermore, the first vent 12a can also be part of the first ventilation path 31. In this case, the first vent 12a is an example of a first air intake.

[0140] Furthermore, in this embodiment, the first seat cover 11b may also cover the second air inlet 32a. In this case, similarly to the first vent 12a corresponding to the first air inlet 31a, a vent corresponding to the second air inlet 32a may also be formed in the first seat cover 11b. Air drawn in through this vent may also be guided to the second ventilation path 32.

[0141] [Seating backrest 13]

[0142] The seat backrest 13 is a backrest used to support the shoulder peaks, back, and lumbar region of a person sitting in the seat 1. The seat backrest 13 is elongated along the Z-axis and is configured to stand upright relative to the seat 10. The seat backrest 13 has a second seat cushion 13a, which acts as a cushioning element, and a second seat cover 13b for covering the second seat cushion 13a.

[0143] The second seat cushion 13a is made of, for example, polyurethane foam, and is configured to rotate about the Y-axis. The second seat cushion 13a is used to support the shoulders, back, and waist of the person sitting on it.

[0144] The second seat cushion 13a is provided with a portion of a third ventilation path 33 for discharging air drawn in from the first vent 12a. In the second seat cushion 13a, at least one of the air flowing into the first seat cushion 11a via the first ventilation path 31 driven by the blower 34 and the air flowing into the first seat cushion 11a via the second ventilation path 32 is guided to the third ventilation path 33 and discharged from the outlet 33a. The outlet 33a is formed in the second seat cushion 13a of the seat back 13. The third ventilation path 33 formed in the second seat cushion 13a can be either a simple through hole formed in the first seat cushion 11a or a ventilation duct.

[0145] The second seat cover 13b is a cover used to cover the second seat cushion 13a. The second seat cover 13b is, for example, a leather cover, a fiber cover, etc.

[0146] A second vent 12b for discharging inhaled air is formed in the second seat cover 13b. The second vent 12b is formed on the side facing the person sitting on the seat 10 (the side facing the positive X-axis direction) and at a position corresponding to the outlet 33a of the third ventilation path 33. The outlet 33a is positioned vertically above the first air inlet 31a and the second air inlet 32a, that is, on the side facing the positive Z-axis direction. In this embodiment, a plurality of second vents 12b are formed in the second seat cover 13b. The plurality of second vents 12b are present, for example, in a point-like manner between the right and left shoulders of the person sitting on the seat 1. For example, the plurality of second vents 12b are formed in portions of the second seat cover 13b corresponding to at least one of the following parts: the head, neck, acromion, back, and waist.

[0147] Multiple second vents 12b are used to allow air that has been guided to a third ventilation path 33 via at least one of the first ventilation path 31 and the second ventilation path 32 and discharged from the outlet 33a to pass through. That is, when air guided to the third ventilation path 33 via at least one of the first ventilation path 31 and the second ventilation path 32 by the drive of the vehicle seat air conditioning unit 3 is discharged from the outlet 33a, this air is guided to the second vents 12b. Therefore, the second vents 12b also serve as an outlet for discharging air to the outside of the seat 1. Furthermore, the second vents 12b may also be part of the second ventilation path 32. In this case, the second vents 12b is an example of an outlet.

[0148] [Headrest 15]

[0149] The headrest 15 is a head cushion used to support the head of a person sitting in the seat 1. The headrest 15 is fixed to the end of the seat back 13 on the positive Z-axis side.

[0150] Furthermore, the third vent 12c can also be formed in the headrest 15. That is, it can also be part of the third ventilation path 33 and set in the headrest 15.

[0151] [Vehicle seat air conditioning unit 3]

[0152] The vehicle seat air conditioning unit 3 is an air conditioning unit used in the vehicle seat 1 that blows air from behind the person sitting in the seat 1 towards them. The vehicle seat air conditioning unit 3 performs air supply by drawing in air that convects around the seat 1 and blowing the drawn-in air towards the person. Therefore, if the temperature around the seat 1 is higher than normal, it provides warm air; if it is lower than normal, it provides cool air. Furthermore, the vehicle seat air conditioning unit 3 may also be equipped with an air conditioner capable of both heating and cooling.

[0153] like Figure 2 and Figure 3 As shown, the vehicle seat air conditioning unit 3 includes a blower 34, a first ventilation path 31, a second ventilation path 32, a ventilation path selection and switching unit 35, a third ventilation path 33, a first temperature sensor 51, a second temperature sensor 52, a control unit 60, and an operation unit 65.

[0154] The blower 34 is capable of drawing in air from at least one of the first vent 12a formed in the first seat cover 11b of the seat 1 and the second air inlet 32a formed in the first seat cushion 11a, and discharging the drawn-in air from the second vent 12b formed in the second seat cushion 13a. Specifically, the blower 34 is electrically connected to the control unit 60. The blower 34 is driven and controlled by the control unit 60 to draw in air from at least one of the first air inlet 31a and the second air inlet 32a through the first vent 12a, and to discharge the drawn-in air from the outlet 33a through at least one of the first ventilation path 31 and the second ventilation path 32, the ventilation path selection switching unit 35, and the third ventilation path 33.

[0155] Additionally, the blower 34 is built into the seat portion 10 of the seat 1. Specifically, the blower 34 is disposed inside the first seat cushion 11a. When the blower 34 is activated, air is drawn in from the first air inlet 31a and the second air inlet 32a of the first seat cover 11b.

[0156] Furthermore, the blower 34 is positioned downstream of the ventilation path selection switching unit 35. Specifically, in the air flow paths from the first air inlet 31a to the outlet 33a and from the second air inlet 32a to the outlet 33a, the blower 34 is positioned downstream of the ventilation path selection switching unit 35. That is, the blower 34 is positioned between the ventilation path selection switching unit 35 and the outlet 33a. In this embodiment, the blower 34 is positioned on the third ventilation path 33. Moreover, as long as air can flow from at least one of the first air inlet 31a and the second air inlet 32a to the ventilation path selection switching unit 35 and from the ventilation path selection switching unit 35 to the outlet 33a, the blower 34 can also be positioned outside the third ventilation path 33. Additionally, the blower 34 can also be positioned outside the first seat cushion 11a; its position is not particularly limited.

[0157] The first ventilation path 31 is built into the seat 1. Specifically, the first ventilation path 31 is configured inside the seat 10 in such a way that it extends from the seat surface 11c of the seat 10 to the blower 34.

[0158] Furthermore, the first ventilation path 31 guides air drawn in from the first air inlet 31a of the seat portion 10 of the seat 1 to the ventilation path selection switching unit 35 via the blower 34. When the first ventilation path 31 is selected by the ventilation path selection switching unit 35, air flows within the first ventilation path 31. The first ventilation path 31 is, for example, constituted by a ventilation duct.

[0159] One end of the first ventilation path 31 forms a first air inlet 31a, and the other end of the first ventilation path 31 is connected to the ventilation path selection and switching unit 35. That is, the first ventilation path 31 extends from the first air inlet 31a to the ventilation path selection and switching unit 35.

[0160] Furthermore, the first air inlet 31a draws in air from the side of the seat 10 where the person sits (seat surface 11c), corresponding to the first vent 12a of the first seat cover 11b. When viewed along the Z-axis, the first air inlet 31a and the first vent 12a overlap. In this embodiment, the first air inlet 31a draws in air via the first vent 12a, but it could also be a structure that directly draws in air.

[0161] The second ventilation path 32 is built into the seat 1. Specifically, the second ventilation path 32 is arranged inside the seat 10 such that it reaches the blower 34 from a part of the seat 10 other than the side on which the person sits (seat surface 11c).

[0162] The second ventilation path 32 is a different ventilation path from the first ventilation path 31. The second ventilation path 32 guides air drawn in from the second air inlet 32a of the seat portion 10 of the seat 1 to the ventilation path selection switching unit 35 via a blower 34. When the second ventilation path 32 is selected by the ventilation path selection switching unit 35, air flows within the second ventilation path 32. The second ventilation path 32 is, for example, constructed of a ventilation duct.

[0163] One end of the second ventilation path 32 forms a second air inlet 32a, and the other end of the second ventilation path 32 is connected to the ventilation path selection and switching unit 35. That is, the second ventilation path 32 extends from the second air inlet 32a to the ventilation path selection and switching unit 35.

[0164] Furthermore, the second air inlet 32a is a different air inlet from the first air inlet 31a. The second air inlet 32a is formed on a portion of the seat portion 10 other than the side on which the person sits (seat surface 11c). In this embodiment, the second air inlet 32a is formed on the side opposite to the seat surface 11c (the side of the seat portion 10 in the negative Z-axis direction), and can draw in air present on the lower side (negative Z-axis direction side) of the seat 1.

[0165] The ventilation path selection switching unit 35 is built into the seat portion 10 of the seat 1. Specifically, the ventilation path selection switching unit 35 is located upstream of the blower 34, i.e., on the side of the first air inlet 31a and the second air inlet 32a.

[0166] Furthermore, in order to guide air to the third ventilation path 33, the ventilation path selection and switching unit 35 selectively switches to at least one of the first ventilation path 31 and the second ventilation path 32, thereby guiding air that has been switched to at least one of the first ventilation path 31 and the second ventilation path 32 to the third ventilation path 33. The ventilation path selection and switching unit 35 is, for example, composed of a damper, and is capable of switching the airflow path, i.e., the ventilation path. The ventilation path selection and switching unit 35 can selectively guide any one of the following to the third ventilation path 33: air guided only from the first ventilation path 31, air guided only from the second ventilation path 32, or air guided simultaneously from both the first ventilation path 31 and the second ventilation path 32.

[0167] Specifically, the ventilation path selection switching unit 35 has a first mode, a second mode, and a third mode. The first mode connects the first ventilation path 31 and the third ventilation path 33. In the first mode, air is discharged from the outlet 33a by guiding only air from the first ventilation path 31 to the third ventilation path 33. The second mode connects the second ventilation path 32 and the third ventilation path 33. In the second mode, air is discharged from the outlet 33a by guiding only air from the second ventilation path 32 to the third ventilation path 33. The third mode connects the first ventilation path 31, the second ventilation path 32, and the third ventilation path 33. In the third mode, air is mixed by guiding air simultaneously from the first ventilation path 31 and the second ventilation path 32 to the third ventilation path 33 and being discharged from the outlet 33a. The ventilation path selection switching unit 35 is electrically connected to the control unit 60, and the ventilation path selection switching unit 35 is driven and controlled by the controlled unit 60 to select any one of the first, second, and third modes.

[0168] The third ventilation path 33 is a ventilation path different from the first ventilation path 31 and the second ventilation path 32. The third ventilation path 33, via a blower 34, guides air from at least one of the first ventilation path 31 and the second ventilation path 32 from the ventilation path selection switching unit 35 to the exhaust port 33a provided on the seat 1. Specifically, the third ventilation path 33 guides only the air drawn in from the first air inlet 31a and guided to the first ventilation path 31 to the exhaust port 33a, or only the air drawn in from the second air inlet 32a and guided to the second ventilation path 32 to the exhaust port 33a. Alternatively, the third ventilation path 33 mixes air drawn in from both the first air inlet 31a and the second air inlet 32a and guided to both the first ventilation path 31 and the second ventilation path 32, and then guides it to the exhaust port 33a. The third ventilation path 33 is, for example, constructed of a ventilation duct. One end of the third ventilation path 33 forms the exhaust port 33a, and the other end of the third ventilation path 33 is connected to the ventilation path selection switching unit 35. Furthermore, the third ventilation path 33 can also be connected to the ventilation path selection and switching unit 35 via the blower 34. The outlet 33a corresponds to the second vent 12b of the second cover 13b. When viewed along the X-axis, the outlet 33a and the second vent 12b overlap. In this embodiment, air is discharged from the outlet 33a via the second vent 12b, but it could also be a structure that directly discharges air.

[0169] The third ventilation path 33 is built into the seat 1. Specifically, a portion of the third ventilation path 33 is disposed inside the seat 10, and the remaining portion of the third ventilation path 33 is disposed inside the seat back 13.

[0170] The third ventilation path 33 extends from the ventilation path selection switching unit 35 to the outlet 33a. In this embodiment, the third ventilation path 33 extends from the ventilation path selection switching unit 35 within the first seat cushion 11a to the second seat cushion 13a. Furthermore, in this embodiment, the third ventilation path 33 extends to a position near the headrest 15 in the second seat cover 13b. The outlet 33a, which is one end of the third ventilation path 33, is positioned corresponding to at least one of the following body parts: the head, neck, acromion, back, and waist.

[0171] Based on the structure of the first ventilation path 31, the second ventilation path 32, and the third ventilation path 33, the first air inlet 31a, the second air inlet 32a, and the outlet 33a have the following relationship: The first air inlet 31a and the second air inlet 32a are positioned vertically lower than the outlet 33a. Furthermore, the second air inlet 32a is positioned vertically lower than the first air inlet 31a. Thus, by drawing in air from the areas corresponding to the person's buttocks and thighs, and from the areas of the seat 1 other than the seat surface 11c, and expelling it from the areas corresponding to the person's head, neck, shoulder, back, and waist, an airflow surrounding the person seated in the seat 1 is generated.

[0172] Furthermore, in the vehicle seat air conditioning unit 3, the first air inlet 31a, the second air inlet 32a, and the outlet 33a are provided on the seat 1, and the first ventilation path 31, the second ventilation path 32, the third ventilation path 33, the blower 34, and the ventilation path selection and switching unit 35 are built into the seat 1. In other words, since all the components for generating airflow surrounding the person sitting on the seat 1 are provided on the seat 1, the structure of the vehicle seat air conditioning unit 3 can be simplified.

[0173] [First temperature sensor 51, second temperature sensor 52]

[0174] The first temperature sensor 51 is used to detect the temperature inside the vehicle interior. In this embodiment, as an example of the temperature inside the vehicle interior detected by the first temperature sensor 51, the first temperature sensor 51 detects the temperature of the space inside the vehicle interior where a person is located. For example, the first temperature sensor 51 may also be installed in the seat 1, the first ventilation path 31, the second ventilation path 32, or the third ventilation path 33. In this case, as an example of the temperature inside the vehicle interior detected by the first temperature sensor 51, the first temperature sensor 51 may also detect the temperature of the air flowing in the first ventilation path 31, the second ventilation path 32, or the third ventilation path 33. For example, the first temperature sensor 51 may also be a temperature sensor pre-installed in a vehicle air conditioning unit. In this case, as an example of the temperature inside the vehicle interior detected by the first temperature sensor 51, the first temperature sensor 51 may also detect the temperature at the outlet of the vehicle air conditioning unit. The first temperature sensor 51 outputs information representing the temperature inside the vehicle interior as a detection result to the control unit 60.

[0175] The second temperature sensor 52 detects the surface temperature of the person sitting on the seat 1. In this embodiment, the second temperature sensor 52 is disposed in the vehicle interior and positioned where the person sitting on the seat 1 can be observed. For example, the second temperature sensor 52 may be a camera device for capturing images of the person sitting on the seat 1. The second temperature sensor 52 outputs information representing a second temperature, which is the surface temperature, as a detection result to the control unit 60. Furthermore, the second temperature sensor 52 is not limited to a sensor that detects the second temperature via a camera device or the like; for example, it may be a structure that indirectly detects the second temperature based on information from a temperature sensor disposed on the surface of the seat 1.

[0176] Furthermore, the vehicle seat air conditioning unit 3 may also be equipped with sensors such as an external temperature sensor for detecting the external temperature of the vehicle, a solar radiation sensor for detecting the amount of sunlight shining on the vehicle, a temperature sensor for detecting the temperature of the air at the first air intake 31a, a humidity sensor for detecting the humidity of the air at the first air intake 31a, a skin temperature sensor for detecting the skin temperature of a person sitting on the seat 1, and a temperature sensor for detecting the surface temperature of the seat 1. These sensors may also output information indicating the detected temperature or humidity to the control unit 60.

[0177] Furthermore, a sensor for detecting a person's state can also be installed in the vehicle seat air conditioning unit 3. The person's state includes their sweating state, the duration of their sitting position, etc. For example, the sensor may include a sensor for detecting the duration of a person sitting in seat 1, and may also include a camera for capturing images of the person. The sensor for detecting the duration of sitting can detect the sitting period based on the vehicle's start-up period, or it can detect the sitting period as a continuous period during which the presence of a person is detected. This sensor can also output information indicating the sitting period as a detection result to the control unit 60. Alternatively, the sensor can also detect a person's sweating state by capturing an image of the person. The sensor can also output information indicating the person's sweating state as a detection result to the control unit 60.

[0178] [Control Department 60]

[0179] The control unit 60 controls the blower 34 and the ventilation path selection switching unit 35. The control unit 60 is a microcomputer that switches the current flowing to the blower 34 and the ventilation path selection switching unit 35 on / off, or controls the output of the blower 34 by changing the current value.

[0180] The control unit 60 switches the mode of the ventilation path selection switching unit 35 by selecting any one of the first mode, the second mode, and the third mode. Furthermore, the control unit 60 switches the mode of the ventilation path selection switching unit 35 based on information indicating a first temperature detected by the first temperature sensor 51 and information indicating a second temperature detected by the second temperature sensor 52. In addition, this embodiment shows an example using both the first temperature sensor 51 and the second temperature sensor 52, but the second temperature sensor 52 may also be omitted.

[0181] Specifically, the control unit 60 performs the following control: switching the mode of the ventilation path selection switching unit 35 based on the temperature inside the vehicle cabin detected by the first temperature sensor 51 and the surface temperature of the person sitting on the seat 1 detected by the second temperature sensor 52. More specifically, when the first temperature detected by the first temperature sensor 51 is above the set vehicle cabin temperature and the second temperature detected by the second temperature sensor 52 is above the first surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to operate in the second mode. Furthermore, when the first temperature detected by the first temperature sensor 51 is above the set vehicle cabin temperature and the second temperature detected by the second temperature sensor 52 is below the first surface temperature but above the second surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to operate in the third mode. The second surface temperature is a temperature lower than the first surface temperature. Additionally, when the first temperature detected by the first temperature sensor 51 is below the set vehicle cabin temperature and the second temperature detected by the second temperature sensor 52 is below the second surface temperature but above the third surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to operate in the first mode. The third surface temperature is a temperature lower than the second surface temperature. The cabin temperature, first surface temperature, and second surface temperature are all preset temperatures (thresholds) that can be arbitrarily set and changed.

[0182] In addition, the control unit 60 can also control the mode of switching the ventilation path selection switching unit 35 and adjust the air volume of the blower 34 based on the temperature outside the vehicle when a person is sitting on the seat 1, the amount of sunlight shining on the vehicle, the temperature of the air at the first air intake 31a, the humidity of the air at the first air intake 31a, the skin temperature of the person sitting on the seat 1, the surface temperature of the seat 1, etc.

[0183] [Operations Department 65]

[0184] The operation unit 65 is an input interface mounted on the vehicle, which outputs setting instructions, such as the temperature and airflow of the vehicle's air conditioning system, to the control unit 60 based on received user input. For example, the operation unit 65 can output mode switching instructions to the control unit 60 based on received user input. Furthermore, the operation unit 65 can be a vehicle control panel, tablet terminal, smartphone, etc. Additionally, the operation unit 65 can also output the aforementioned setting instructions for the cabin temperature, first surface temperature, and second surface temperature to the control unit 60.

[0185] [Power Supply Section 70]

[0186] The power supply unit 70 is a power circuit that supplies power to the blower 34 and the ventilation path selection switching unit 35 via the control unit 60, etc. Here, the power supply unit 70 is a DC power supply that is powered by a battery (not shown). The power supply unit 70 is controlled by the control unit 60 to regulate the current supplied to the blower 34 and the ventilation path selection switching unit 35.

[0187] <Processing>

[0188] Figure 4 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3 in Embodiment 1. Figure 5A This is a schematic side view showing the airflow path in seat 1 when the second mode is executed. Figure 5B This is a schematic side view showing the airflow path in seat 1 when the third mode is executed. Figure 5C This is a schematic side view showing the airflow path in seat 1 when the first mode is executed.

[0189] In addition, regarding Figure 4 The control of the control unit 60 shown will be described using the example of cooling.

[0190] First, such as Figure 4 As shown, the first temperature sensor 51 detects the temperature inside the vehicle interior (first temperature). Additionally, the second temperature sensor 52 detects the surface temperature of a person sitting in seat 1 (second temperature). The first temperature sensor 51 outputs information representing the first temperature (interior temperature) to the control unit 60 as a detection result. Similarly, the second temperature sensor 52 outputs information representing the second temperature (surface temperature) to the control unit 60 as a detection result.

[0191] The control unit 60 acquires information indicating a first temperature from the first temperature sensor 51 and information indicating a second temperature from the second temperature sensor 52 (S11). The control unit 60 switches the mode of the ventilation path selection switching unit 35 based on the acquired information indicating the first temperature and the information indicating the second temperature.

[0192] Specifically, the control unit 60 determines whether the first temperature detected by the first temperature sensor 51 is above the set cabin temperature and whether the second temperature detected by the second temperature sensor 52 is above the first surface temperature (S12).

[0193] If the first temperature detected by the first temperature sensor 51 is above the set cabin temperature and the second temperature detected by the second temperature sensor 52 is above the first surface temperature ("Yes" in S12), the control unit 60 causes the ventilation path selection switching unit 35 to execute the second mode (S13). Then, the control unit 60 ends the processing and returns to step S11 to repeat the processing.

[0194] For example, under conditions of high external temperature and abundant sunshine, the interior temperature (first temperature) will rise above the set interior temperature immediately after a person enters the vehicle. Furthermore, if the second temperature exceeds the first surface temperature, a person sitting in seat 1 will feel extremely hot. Therefore, by means of... Figure 5A As shown, air from the vehicle cabin, cooled by the vehicle's air conditioning system, is drawn in through the second air intake 32a and discharged through the exhaust outlet 33a, thus blowing the air towards the person seated in seat 1. As a result, the surface temperature of the person seated in seat 1 can be reduced. Figure 5A In the diagram, solid lines represent air directed to the second ventilation path 32, and dashed lines represent air directed to the third ventilation path 33.

[0195] If the first temperature detected by the first temperature sensor 51 is lower than the set cabin temperature or the second temperature detected by the second temperature sensor 52 is lower than the first surface temperature (in S12, it is "No"), the control unit 60 determines whether the first temperature detected by the first temperature sensor 51 is higher than the set cabin temperature and the second temperature detected by the second temperature sensor 52 is lower than the first surface temperature and higher than the second surface temperature (within the first temperature range) (S14).

[0196] If the first temperature detected by the first temperature sensor 51 is above the set cabin temperature, and the second temperature detected by the second temperature sensor 52 is below the first surface temperature but above the second surface temperature ("Yes" in S14), the control unit 60 causes the ventilation path selection switching unit 35 to execute the third mode (S15). Then, the control unit 60 ends the processing and returns to step S11 to repeat the processing.

[0197] For example, in situations where the outside temperature is high and there is abundant sunlight, although the vehicle's air conditioning system begins to cool, the interior temperature (first temperature) remains above the set interior temperature. Furthermore, if the second temperature is lower than the first surface temperature but higher than the second surface temperature, the interior temperature remains high, and therefore the person sitting in seat 1 will feel hot. Therefore, as... Figure 5B As shown, air from the vehicle cabin, cooled by the vehicle's air conditioning system, is drawn in through the second air intake 32a, and air is also drawn in through the first air intake 31a on the seat surface 11c side of the seat 1. The air drawn in simultaneously from the first air intake 31a and the second air intake 32a mixes in the third ventilation path 33. By expelling the mixed air from the exhaust outlet 33a, it is possible to blow it to the person seated in the seat 1. In the third mode, the temperature of the air exhausted from the exhaust outlet 33a becomes higher than the temperature of the air exhausted from the exhaust outlet 33a in the second mode. Thus, by mixing these airs to create air with slightly suppressed coldness, it is possible to prevent the person seated in the seat 1 from becoming too cold. Figure 5B In the diagram, solid lines represent air directed to the first ventilation path 31 and the second ventilation path 32, while dashed lines represent air directed to the third ventilation path 33.

[0198] If the first temperature detected by the first temperature sensor 51 is lower than the set cabin temperature, or the second temperature detected by the second temperature sensor 52 is outside the range of being lower than the first surface temperature but higher than the second surface temperature ("No" in S14), the control unit 60 determines whether the first temperature detected by the first temperature sensor 51 is lower than the set cabin temperature and the second temperature detected by the second temperature sensor 52 is lower than the second surface temperature but higher than the third surface temperature (within the second temperature range) (S16). If the first temperature detected by the first temperature sensor 51 is lower than the set cabin temperature and the second temperature detected by the second temperature sensor 52 is lower than the second surface temperature but higher than the third surface temperature ("Yes" in S16), the control unit 60 causes the ventilation path selection switching unit 35 to execute the first mode (S17). Then, the control unit 60 ends the processing and returns to step S11 to repeat the processing.

[0199] For example, if the cooling provided by the vehicle's air conditioning system operates stably, causing the interior temperature (first temperature) to fall below the set interior temperature, and if the second temperature further falls below the second surface temperature and exceeds the third surface temperature, then a temperature slightly below the set interior temperature is appropriate, but the person sitting in seat 1 feels moderately warm or slightly hot. Therefore, by means of... Figure 5CAs shown, air is drawn in through the first air inlet 31a on the seat surface 11c side of the seat 1 and discharged through the outlet 33a, thus blowing the air towards the person seated in the seat 1. In the first mode, the temperature of the air discharged from the outlet 33a is higher than that of the air discharged from the outlet 33a in the second and third modes. Therefore, the perceived temperature of the person seated in the seat 1 can be lowered in a way that avoids excessive cold. Figure 5C In the diagram, solid lines represent air directed to the first ventilation path 31, and dashed lines represent air directed to the third ventilation path 33.

[0200] In addition, if the first temperature detected by the first temperature sensor 51 is above the set cabin temperature, or the second temperature detected by the second temperature sensor 52 is below the third surface temperature (in S16, it is "No"), the control unit 60 returns to step S11 to repeat the process.

[0201] Furthermore, in this process, the order of the decision-making process in steps S12, S14, and S16 can be appropriately changed.

[0202] <Effects>

[0203] Next, the effects of the vehicle seat air conditioning unit 3 in this embodiment will be explained.

[0204] As described above, the vehicle seat air conditioning unit 3 of this embodiment is used in the seat 1 of a vehicle and includes: a blower 34; a ventilation path selection switching unit 35; a control unit 60 that controls the ventilation path selection switching unit 35; a first ventilation path 31 for guiding air drawn in from a first air inlet 31a by the blower 34 to the ventilation path selection switching unit 35, wherein the first air inlet 31a is provided on the side of the seat 1 where a person sits, i.e., the seat surface 11c; a second ventilation path 32 for guiding air drawn in from a second air inlet 32a by the blower 34 to the ventilation path selection switching unit 35, wherein the second air inlet 32a is an air inlet different from the first air inlet 31a and is provided on a part of the seat 1 other than the seat surface 11c; and a third ventilation path 33 for guiding air guided from at least one of the first ventilation path 31 and the second ventilation path 32 by the blower 34 from the ventilation path selection switching unit 35 to the outlet 33a provided on the seat 1. Furthermore, the first air intake 31a faces the vehicle's interior opening. The first air intake 31a and the second air intake 32a are positioned vertically below the exhaust outlet 33a. At least the first air intake 31a, the second air intake 32a, and the exhaust outlet 33a are located in the seat 1, and the first ventilation path 31, a portion of the second ventilation path 32, the ventilation path selection switch 35, the blower 34, and the third ventilation path 33 are integrated into the seat 1. The ventilation path selection switch 35 has a first mode connecting the first ventilation path 31 to the third ventilation path 33, a second mode connecting the second ventilation path 32 to the third ventilation path 33, and a third mode connecting the first ventilation path 31 and the second ventilation path 32 to the third ventilation path 33, to guide air into the third ventilation path 33. The control unit 60 switches the mode of the ventilation path selection switch 35 by selecting any one of the first, second, and third modes.

[0205] Accordingly, regardless of whether it has a duct connecting the vehicle air conditioning unit for conditioning the vehicle interior to the vehicle seat air conditioning unit, as in conventional vehicle seat air conditioning units, the vehicle seat air conditioning unit 3 of this embodiment can draw in air that is convection or stagnant around the seat 1 through the blower 34 and blow the drawn-in air to the person from the exhaust port 33a. Therefore, compared with conventional vehicle seat air conditioning units, the vehicle seat air conditioning unit 3 of this embodiment simplifies the structure in the vehicle.

[0206] Furthermore, in the vehicle seat air conditioning unit 3, a first air inlet 31a is provided on the seat surface 11c of the seat 1, a second air inlet 32a is provided on a part of the seat 1 other than the seat surface 11c, and an outlet 33a is also provided on the seat 1. That is, it has a structure for drawing in air that is convection or stagnant around the seat 1 and blowing the drawn-in air to the person from the outlet 33a. Moreover, in the vehicle seat air conditioning unit 3, a first ventilation path 31, a portion of a second ventilation path 32, a ventilation path selection switch 35, a blower 34, and a third ventilation path 33 are built into the seat 1. In other words, all the components for air conditioning suitable for the person sitting in the seat 1 are built into the seat 1. Therefore, compared to the conventional vehicle seat air conditioning unit 3, the vehicle seat air conditioning unit 3 of this disclosure simplifies the structure.

[0207] Furthermore, in the vehicle seat air conditioning unit 3, the ventilation path selection switching unit 35 allows for the discharge of only air drawn in from the first air intake 31a from the exhaust outlet 33a, only air drawn in from the second air intake 32a from the exhaust outlet 33a, or air drawn in from both the first air intake 31a and the second air intake 32a simultaneously from the exhaust outlet 33a. In other words, air can be drawn in from different air intakes such as the first air intake 31a and the second air intake 32a, and each type of air or a mixture drawn in from different air intakes can be discharged independently from the exhaust outlet 33a, thus allowing for different temperatures of the air discharged from the exhaust outlet 33a. Therefore, according to the vehicle seat air conditioning unit 3, air conditioning suitable for the person sitting in the seat 1 can be achieved by switching the air discharged from the exhaust outlet 33a of the seat 1.

[0208] Therefore, the vehicle seat air conditioning unit 3 can provide a comfortable air-conditioned environment for the person sitting in the seat 1 while suppressing the complexity of the vehicle's structure.

[0209] In particular, since the first air inlet 31a and the second air inlet 32a are positioned vertically below the outlet 33a, for example, the first air inlet 31a can be located at a position corresponding to the lower limbs of the person, the second air inlet 32a can be located at a position unlikely to affect the person's body, and the outlet 33a can be located at a position corresponding to the upper body of the person. In this case, an airflow can be generated by drawing in air from at least one of the first air inlet 31a and the second air inlet 32a, and the drawn-in air can be blown towards the person by discharging the air from the outlet 33a. As a result, an airflow that surrounds the person's body can be generated, thus allowing the air-conditioned air to remain around the person sitting in the seat 1, providing a comfortable air-conditioned environment with minimal air conditioning energy.

[0210] Furthermore, the ventilation path selection switching unit 35 has a first mode that connects the first ventilation path 31 to the third ventilation path 33.

[0211] Accordingly, for example, air drawn in through the first air inlet 31a can be blown towards the upper body of a person. Additionally, air blown towards the upper body of a person by air being discharged from the outlet 33a is drawn in through the first air inlet 31a of the seat surface 11c; that is, it is drawn in from the outlet 33a through the upper body of the person sitting on the seat 1 into the first air inlet 31a. Therefore, an airflow surrounding the upper body, hips, and thighs can be generated.

[0212] For example, when a person sits on seat 1 for an extended period of time while the vehicle's air conditioning system is operating in cooling mode, or when the vehicle's air conditioning system is operating in heating mode, the buttocks and thighs that are in contact with the seat surface 11c may become stuffy and hot due to sweating. However, in the vehicle seat air conditioning system 3, by drawing in ambient air from the first air intake 31a, airflow can be generated around the person's buttocks and thighs, thus suppressing the stuffiness and heat in these areas. Therefore, a comfortable air-conditioned environment can be provided for the person sitting on seat 1.

[0213] Furthermore, the ventilation path selection switching unit 35 has a second mode that connects the second ventilation path 32 to the third ventilation path 33.

[0214] Accordingly, for example, air drawn in from the second air intake 32a can be blown toward the upper body of a person. Thus, when the second air intake 32a is positioned to draw in air exhausted from the vehicle's air conditioning unit (e.g., the lower part of the seat 1), a comfortable air-conditioned environment can be provided to the person sitting in the seat 1 by rapidly blowing cold and warm air toward the upper body of the person.

[0215] For example, in situations with high outside temperatures and abundant sunshine, the temperature inside the vehicle will rise immediately after a person enters. According to the vehicle seat air conditioning unit 3 of this embodiment, air drawn in from the second air intake 32a can be blown towards the upper body of a person sitting in seat 1. Especially during the cooling operation of the vehicle air conditioning unit, cooled air can be drawn in from the second air intake 32a, thus keeping the person sitting in seat 1 cool.

[0216] Furthermore, in situations where the outside temperature is low, the interior temperature of the vehicle will drop immediately after a person enters. According to the vehicle seat air conditioning unit 3 of this embodiment, air drawn in from the second air intake 32a can be blown towards the upper body of a person sitting in seat 1. Especially when the vehicle air conditioning unit is in heating mode, heated air can be drawn in from the second air intake 32a, thus keeping the person sitting in seat 1 warm. Therefore, according to this vehicle seat air conditioning unit 3, a comfortable air-conditioned environment can be provided for the person sitting in seat 1.

[0217] Furthermore, the ventilation path selection switching unit 35 has a third mode that connects the first ventilation path 31 and the second ventilation path 32 to the third ventilation path 33.

[0218] Accordingly, for example, air drawn in from the first air inlet 31a and the second air inlet 32a can be blown towards the upper body of a person. Additionally, air blown towards the upper body of a person by air being discharged from the outlet 33a is drawn in from the first air inlet 31a of the seat surface 11c; that is, it is drawn in from the outlet 33a through the upper body of the person sitting on the seat 1 into the first air inlet 31a. Therefore, an airflow surrounding the upper body, hips, and thighs can be generated.

[0219] For example, there exists a situation where, during the cooling operation of the vehicle's air conditioning system, the temperature of the air blown out by the system is sufficiently reduced, but the temperature inside the vehicle is not sufficiently reduced. According to the vehicle seat air conditioning system 3 of this embodiment, for a person sitting in seat 1, the air surrounding seat 1 drawn in from the first air intake 31a and the air cooled by the vehicle's air conditioning system drawn in from the second air intake 32a are mixed and blown towards the upper body of the person. Therefore, excessive cooling of the upper body of the person sitting in seat 1 can be prevented, and cooling can be achieved slowly. Furthermore, by drawing in surrounding air from the first air intake 31a, airflow can be generated around the person's buttocks and thighs, thus suppressing stuffiness in these areas. Therefore, according to this vehicle seat air conditioning system 3, a more comfortable air-conditioned environment can be provided for the person sitting in seat 1.

[0220] Furthermore, the control unit 60 switches the mode of the ventilation path selection switching unit 35 by selecting any one of the first mode, the second mode, and the third mode.

[0221] Accordingly, the control unit 60 can select any mode from the first mode, the second mode and the third mode, thus providing an air-conditioned environment suitable for the person sitting in the seat 1.

[0222] Furthermore, the vehicle seat air conditioning unit 3 according to this embodiment also includes: a first temperature sensor 51 that detects the temperature inside the vehicle; and a second temperature sensor 52 that detects the surface temperature of a person sitting in the seat. Moreover, the control unit 60 switches the mode of the ventilation path selection switching unit 35 based on information indicating the first temperature detected by the first temperature sensor 51 and information indicating the second temperature detected by the second temperature sensor 52.

[0223] Therefore, a first temperature, which is the temperature inside the vehicle, and a second temperature, which is the surface temperature of a person sitting in seat 1, can be detected. As a result, the mode of the ventilation path selection switching unit 35 can be automatically switched according to the first and second temperatures, thus providing a more comfortable air-conditioned environment for the person sitting in seat 1.

[0224] In addition, in the vehicle seat air conditioning device 3 according to this embodiment, when the first temperature detected by the first temperature sensor 51 is above the set cabin temperature and the second temperature detected by the second temperature sensor 52 is above the first surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to execute the second mode.

[0225] Therefore, for example, under conditions of high external temperature and abundant sunshine, the temperature inside the vehicle will rise immediately after a person enters. At this time, the first temperature is above the set interior temperature that is designed to make people feel comfortable. Furthermore, there is a situation where, if the first surface temperature is set to a temperature that makes a person sitting in seat 1 feel very hot, the second temperature is above the first surface temperature.

[0226] Therefore, under the above conditions, when the vehicle air conditioning unit is operating in cooling mode, air cooled by the air conditioning unit can be drawn in through the second air intake 32a, thus making the person sitting in seat 1 feel cool. Therefore, according to this vehicle seat air conditioning unit 3, a more comfortable air-conditioned environment can be provided for the person sitting in seat 1.

[0227] In addition, in the vehicle seat air conditioning device 3 according to this embodiment, when the first temperature detected by the first temperature sensor 51 is above the set cabin temperature and the second temperature detected by the second temperature sensor 52 is below the first surface temperature but above the second surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to execute the third mode, wherein the second surface temperature is a temperature lower than the first surface temperature.

[0228] For example, there are situations where, even when the outside temperature is high and there is a lot of sunshine, although the cooling provided by the vehicle's air conditioning system begins to work, the temperature inside the vehicle (the first temperature) is still above the set interior temperature. Furthermore, there are situations where, when a temperature range below the first surface temperature and above the second surface temperature is set to a temperature that makes a person sitting in seat 1 feel hot, the second temperature falls within that temperature range.

[0229] Therefore, under the above conditions, when the vehicle's air conditioning system is operating in cooling mode, the vehicle seat air conditioning unit 3 can draw in air from the vehicle interior that has not been fully cooled (e.g., ambient temperature air) and air that has been cooled by the air conditioning unit. The vehicle seat air conditioning unit 3 mixes the ambient temperature air and the cooled air from the vehicle interior and blows the mixed air towards the person, thus preventing the person sitting in seat 1 from feeling too cold while providing a moderately cool environment. Therefore, according to this vehicle seat air conditioning unit 3, a more comfortable air-conditioned environment can be provided for the person sitting in seat 1.

[0230] In addition, in the vehicle seat air conditioning device 3 according to this embodiment, when the first temperature detected by the first temperature sensor 51 is lower than the set cabin temperature and the second temperature detected by the second temperature sensor 52 is lower than the second surface temperature and higher than the third surface temperature, the control unit 60 causes the ventilation path selection switching unit 35 to execute the first mode, wherein the third surface temperature is a temperature lower than the second surface temperature.

[0231] For example, there is a situation where the temperature inside the vehicle (first temperature) becomes lower than the set temperature inside the vehicle due to the stable operation of the vehicle's air conditioning unit, and the temperature range that is lower than the second surface temperature and higher than the third surface temperature is set to a temperature that makes the person sitting in seat 1 feel slightly warm or comfortable, the second temperature is within the aforementioned temperature range.

[0232] Therefore, under the above conditions, when the vehicle air conditioning unit is operating in cooling mode, the vehicle seat air conditioning unit 3 draws in ambient air from the first air intake 31a, generating an airflow around the person's buttocks and thighs. Furthermore, the vehicle seat air conditioning unit 3 can blow the drawn-in air towards the person, thus directing airflow towards the person sitting in the seat 1. Therefore, according to this vehicle seat air conditioning unit 3, an airflow surrounding the person sitting in the seat 1 is generated, thereby providing a more comfortable air-conditioned environment for the person.

[0233] Furthermore, in the vehicle seat air conditioning unit 3 according to this embodiment, the seat 1 has a seat back 13. Moreover, an outlet 33a is formed on the seat back 13.

[0234] Therefore, by simply expelling air from the outlet 33a, air can be blown towards a person's upper body. This allows for cooling or warming of the upper body, and effectively cools or warms the entire body. Consequently, a more comfortable air-conditioned environment can be provided for the person seated in seat 1.

[0235] Furthermore, in the vehicle seat air conditioning device 3 according to this embodiment, the first air inlet 31a is formed in the center portion 11c1 and the outer edge portion 11c2 of the seat surface 11c.

[0236] Accordingly, by drawing air in through the first air inlet 31a formed in the central portion 11c1 of the seat surface 11c between the buttocks and thighs and the seat surface 11c, stuffiness in the buttocks and thighs can be suppressed. Furthermore, the first air inlet 31a formed in the outer edge portion 11c2 of the seat surface 11c is located in a position not easily covered by the buttocks and thighs, thus allowing air from around the seat 1 to be drawn in. For example, even if air cannot be drawn in through the first air inlet 31a formed in the central portion 11c1 of the seat surface 11c, air can be drawn in through the first air inlet 31a formed in the outer edge portion 11c2 of the seat surface 11c, and thus air can be discharged through the outlet 33a.

[0237] Furthermore, in the vehicle seat air conditioning device 3 according to this embodiment, the outlet 33a is disposed at a position corresponding to at least one of the following parts of a person: head, neck, shoulder, back, and waist.

[0238] Therefore, by simply expelling air from the outlet 33a, air can be directed to at least one of the following areas: head, neck, shoulder, back, and waist. This allows for localized cooling or warming of the body, and also provides overall cooling or warming. Consequently, a more comfortable air-conditioned environment can be provided for the person seated in seat 1.

[0239] (Modification 1 of Implementation Method 1)

[0240] In this variation, the difference from the vehicle seat air conditioning device of Embodiment 1 is that the second air inlet 132a is provided on the seat back 13. Other structures in this variation are the same as in Embodiment 1; the same reference numerals are used for identical structures and functions, and detailed descriptions related to structure and function are omitted.

[0241] Figure 5D This is a schematic side view showing the airflow path in seat 1 when the second mode is executed in variation 1 of embodiment 1. Figure 5E This is a schematic side view showing the airflow path in seat 1 when the third mode is executed in variation 1 of embodiment 1. Figure 5FThis is a schematic side view showing the airflow path in seat 1 when the first mode is executed in variation 1 of embodiment 1.

[0242] In this modified example, the second ventilation path 132 of the vehicle seat air conditioning unit 3a guides the air drawn in from the second air inlet 132a of the second seat cover 13b provided on the seat back 13 to the ventilation path selection switching unit 35 via the blower 34. When the second ventilation path 132 is selected by the ventilation path selection switching unit 35, air flows within the second ventilation path 132.

[0243] In this modified example, the second air intake 132a is formed on the side of the seat back 13. Furthermore, in this modified example, the second air intake 132a is positioned lower than the exhaust outlet 33a relative to the floor of the passenger compartment.

[0244] use Figures 5D-5F The airflow of the vehicle seat air conditioning unit 3a in this modified example will be explained.

[0245] For example, under conditions of high external temperature and abundant sunshine, the interior temperature (first temperature) will rise above the set interior temperature immediately after a person enters the vehicle. Furthermore, if the second temperature exceeds the first surface temperature, a person sitting in seat 1 will feel extremely hot. Therefore, by means of... Figure 5D As shown, air from the vehicle cabin, cooled by the vehicle's air conditioning system, is drawn in through the second air intake 132a and discharged through the exhaust outlet 33a, thus blowing the air towards the person seated in seat 1. As a result, the surface temperature of the person seated in seat 1 is lowered. Figure 5D In the diagram, solid lines represent air directed to the second ventilation path 132, and dashed lines represent air directed to the third ventilation path 33.

[0246] For example, in situations where the outside temperature is high and there is abundant sunlight, although the vehicle's air conditioning system begins to cool, the interior temperature (first temperature) remains above the set interior temperature. Furthermore, if the second temperature is lower than the first surface temperature but higher than the second surface temperature, the interior temperature remains high, and therefore the person sitting in seat 1 will feel hot. Therefore, as... Figure 5EAs shown, air from the vehicle cabin, cooled by the vehicle's air conditioning system, is drawn in through the second air intake 132a, and air is also drawn in through the first air intake 31a on the seat surface 11c side of the seat 1. The air drawn in simultaneously from the first air intake 31a and the second air intake 132a is mixed in the third ventilation path 33. By expelling the mixed air from the exhaust outlet 33a, it is possible to blow it to the person sitting in the seat 1. In the third mode, the temperature of the air exhausted from the exhaust outlet 33a becomes higher than the temperature of the air exhausted from the exhaust outlet 33a in the second mode. Thus, by mixing these airs to create air with slightly suppressed coldness, it is possible to prevent the person sitting in the seat 1 from getting too cold. Figure 5E In the diagram, solid lines represent air directed to the first ventilation path 31 and the second ventilation path 132, while dashed lines represent air directed to the third ventilation path 33.

[0247] For example, if the cooling provided by the vehicle's air conditioning system operates stably, causing the interior temperature (first temperature) to fall below the set interior temperature, and if the second temperature further falls below the second surface temperature and exceeds the third surface temperature, then a temperature slightly below the set interior temperature is appropriate, but the person sitting in seat 1 would feel moderately warm or slightly hot. Therefore, by means of... Figure 5F As shown, air is drawn in through the first air inlet 31a on the seat surface 11c side of the seat 1 and discharged through the outlet 33a, thus blowing the air towards the person seated in the seat 1. In the first mode, the temperature of the air discharged from the outlet 33a is higher than that of the air discharged from the outlet 33a in the second and third modes. Therefore, the perceived temperature of the person seated in the seat 1 can be lowered in a way that avoids excessive cold. Figure 5F In the diagram, solid lines represent air directed to the first ventilation path 31, and dashed lines represent air directed to the third ventilation path 33.

[0248] (Modification 2 of Implementation Method 1)

[0249] In this modified example, the difference from the vehicle seat air conditioning device of Embodiment 1 is that a first air inlet 31a is provided at the front end E1, rear end E2, right end E3, and left end E4 of the seat surface 11c of the seat 1. The other structures in this modified example are the same as those in Embodiment 1, etc. The same reference numerals are used for the same structures and functions, and detailed descriptions related to the structure and function are omitted.

[0250] Figure 6 This is a perspective view showing the appearance of the seat 1 of the vehicle seat air conditioning unit 3b in a modified example 2 of embodiment 1.

[0251] like Figure 6As shown, a first air inlet 31a is formed on the central portion 11c1 and the outer edge portion 11c2 of the seat surface 11c. The outer edge portion 11c2 is at least one of the rear side portion E2 and the front end portion E1 of the seat surface 11c. Therefore, the first air inlet 31a is provided on the central portion 11c1 of the seat surface 11c, and also on at least one of the rear side portion E2 and the front end portion E1 of the seat surface 11c. In addition, the outer edge portion 11c2 may also include at least one of the right end portion E3 and the left end portion E4.

[0252] In this modified example, the first air inlet 31a is provided at all parts of the seat surface 11c, including the front end E1, rear end E2, right end E3, and left end E4. The front end E1 of the seat surface 11c is the front side relative to the central part 11c1 of the seat surface 11c. The rear end E2 of the seat surface 11c is the rear side relative to the central part 11c1 of the seat surface 11c. The right end E3 of the seat surface 11c is the right side relative to the central part 11c1 of the seat surface 11c. The left end E4 of the seat surface 11c is the left side relative to the central part 11c1 of the seat surface 11c. The right end E3 and the left end E4 are the two peaks of the seat portion 10.

[0253] The first air inlet 31a, formed on the rear side E2, the front end E1, the right end E3, and the left end E4, is positioned in a location that is not easily blocked by the buttocks and thighs when a person is seated on the seat 1.

[0254] In the vehicle seat air conditioning unit 3b of this modified example, the outer edge 11c2 is at least one of the rear side E2 and the front end E1 of the seat surface 11c.

[0255] Therefore, even when a person is seated on the seat 1, the first air inlet 31a located on the outer edge 11c2 is not easily blocked by the person's buttocks and thighs. Thus, the first air inlet 31a can be guaranteed with higher reliability to not be blocked by the person's buttocks and thighs, thereby further suppressing the possibility of air not being able to enter.

[0256] (Implementation Method 2)

[0257] In this embodiment, the difference from the vehicle seat air conditioning unit 3 in Embodiment 1 is that the mode is switched according to the target exhaust temperature. Other structures in this embodiment are the same as in Embodiment 1; the same reference numerals are used for identical structures and functions, and detailed descriptions related to structure and function are omitted.

[0258] Figure 7 This is a block diagram showing the vehicle seat air conditioning unit 3 in Embodiment 2.

[0259] In this embodiment, such as Figure 7As shown, the control unit 60 adjusts at least one of the temperature and airflow of the air conditioning air blown out of the outlet of the vehicle air conditioning unit 90 by outputting an instruction to the vehicle air conditioning unit 90. The vehicle air conditioning unit 90 may or may not be included in the components of the vehicle seat air conditioning unit 3.

[0260] In this embodiment, the second temperature sensor of Embodiment 1 may not be included in the vehicle seat air conditioning unit 3. In this embodiment, the second temperature sensor is not an essential component.

[0261] <Processing>

[0262] Figure 8 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3 in Embodiment 2. Figure 9 This is a schematic diagram showing the mode of switching the ventilation path selection unit 35 according to the target exhaust temperature.

[0263] like Figure 8 As shown, the first temperature sensor 51 detects the temperature inside the vehicle's interior. The first temperature sensor 51 outputs information representing a first temperature (indicating the temperature inside the vehicle's interior) to the control unit 60 as a detection result. The control unit 60 acquires information representing the first temperature from the first temperature sensor 51. Additionally, the control unit 60 acquires information representing a target temperature from the vehicle's air conditioning unit 90, the operation unit 65 for receiving user input, etc. Based on the acquired information, the control unit 60 calculates the difference between the temperature inside the vehicle's interior and the target temperature (S21). The target temperature is a preset temperature, such as a set temperature set for the vehicle's air conditioning unit 90, or a set temperature desired by a person.

[0264] The control unit 60 calculates the target exhaust temperature of the air discharged from the exhaust port 33a based on the calculated difference, so as to make the temperature inside the vehicle compartment the target temperature (S22).

[0265] The control unit 60 selects a mode based on the calculated target discharge temperature (S23). For example, such as... Figure 9 As shown, the control unit 60 selects the mode determined by the target discharge temperature. Specifically, if the calculated target discharge temperature is above temperature Xb, the control unit 60 selects the first mode; if the calculated target discharge temperature is below temperature Xb but above temperature Xa, the control unit 60 selects the third mode; and if the calculated target discharge temperature is below temperature Xa, the control unit 60 selects the second mode.

[0266] Furthermore, there are instances where mode switching may resume due to changes in the vehicle's surrounding environment while it is in motion. In such cases, to suppress frequent mode switching, as... Figure 9 The switching is performed in a lag manner as shown.

[0267] Furthermore, in the selection of the mode, implementation method 1 can also be used. Figure 4 However, this is not limited to this implementation method.

[0268] The control unit 60 determines the output (i.e., air volume) of the blower 34 based on the calculated target discharge temperature (S24). For example, when the target temperature during cooling is around 25°C, the lower the target discharge temperature, the greater the air volume of the blower 34 is produced by the control unit 60. The control unit 60 can also obtain information indicating the surface temperature of a person; if the surface temperature of a person is high, the control unit 60 increases the air volume of the blower 34.

[0269] The control unit 60 determines whether the mode selected in step S23 is the third mode (S25).

[0270] If the selected mode in step S23 is the third mode ("Yes" in S25), the control unit 60 adjusts the mixing ratio of air drawn in from the first air inlet 31a to air drawn in from the second air inlet 32a in the third mode (S26). The higher the target discharge temperature, the more the control unit 60 increases the proportion of air drawn in from the second air inlet 32a compared to the proportion of air drawn in from the first air inlet 31a. The control unit 60 can adjust the mixing ratio of the amount of air flowing into the third ventilation path 33 from the first air inlet 31a to the amount of air flowing into the third ventilation path 33 from the second air inlet 32a by controlling the opening degree (air inflow) of the ventilation path selection switching unit 35.

[0271] If the mode selected in step S23 is not the third mode ("No" in S25), the control unit 60 executes the mode selected in step S23 (S27) after step S26. Then, the control unit 60 ends the process.

[0272] In addition, the control unit 60 can also perform the controls shown below. Here, the control described below will focus on the example during cooling.

[0273] Alternatively, when the control unit 60 obtains information indicating the external temperature of the vehicle from an external temperature sensor used to detect the external temperature of the vehicle, it may correct the calculated target exhaust temperature based on that information. For example, the higher the external temperature of the vehicle indicated by the information, the lower the calculated target exhaust temperature may be corrected to.

[0274] Alternatively, when the control unit 60 obtains information representing the amount of sunlight from a sunlight sensor used to detect the amount of sunlight shining on the vehicle, it can correct the calculated target exhaust temperature based on that information. For example, the more sunlight the information indicates, the lower the calculated target exhaust temperature will be.

[0275] Alternatively, when the control unit 60 obtains information indicating the intake air temperature from a temperature sensor used to detect the air temperature at the first intake port 31a, it can correct the calculated target discharge temperature based on this information. For example, the higher the intake air temperature indicated by the information, the lower the calculated target discharge temperature can be corrected to.

[0276] Alternatively, when the control unit 60 obtains information indicating the intake air humidity from a humidity sensor used to detect the humidity of the air at the first air inlet 31a, it can correct the calculated target discharge temperature based on this information. For example, the higher the intake air humidity indicated by the information, the higher the calculated target discharge temperature can be corrected to.

[0277] Alternatively, when the control unit 60 obtains information representing the skin temperature of a person sitting on the seat 1 from a skin temperature sensor, it can correct the calculated target discharge temperature based on that information. For example, the higher the surface temperature indicated by the information, the lower the calculated target discharge temperature can be corrected to.

[0278] Alternatively, when the control unit 60 obtains information indicating the surface temperature of the seat 1 from a sensor (e.g., an infrared sensor) used to detect the surface temperature of the seat 1, it may correct the calculated target discharge temperature based on that information. For example, the higher the surface temperature indicated by the information, the lower the calculated target discharge temperature may be corrected to.

[0279] Alternatively, when the control unit 60 obtains information about a person's characteristics from the camera device by capturing an image of a person sitting in seat 1, it can correct the calculated target exhaust temperature based on this information. These characteristics include posture, gender, physique, race, and level of alertness. The control unit 60 can also determine whether a person is hot or cold based on these characteristics and correct the target exhaust temperature accordingly. Furthermore, the control unit 60 can determine whether a person is heat-sensitive or cold-sensitive based on input information from the operation unit 65 that is input to the vehicle's air conditioning system, and correct the target exhaust temperature accordingly. For example, if a person is heat-sensitive, the control unit 60 corrects the target exhaust temperature to a lower temperature. Additionally, if a person is drowsy (in a low-alertness state), the control unit 60 corrects the target exhaust temperature to a lower temperature. Thus, the target exhaust temperature can also be corrected based on the person's characteristics and preferences.

[0280] Alternatively, when the control unit 60 acquires sensing information from the heart rate sensor mounted in the vehicle, it can correct the calculated target exhaust temperature based on that sensing information. For example, if the sensing information indicates that the person is cold and fatigued, the control unit 60 can also correct the target exhaust temperature to a higher temperature. The heart rate sensor can also be implemented using, for example, a seat heater or steering wheel heater built into the seat.

[0281] <Effects>

[0282] Next, the effects of the vehicle seat air conditioning unit 3 in this embodiment will be explained.

[0283] As described above, the vehicle seat air conditioning unit 3 according to this embodiment includes a first temperature sensor 51 for detecting the temperature inside the vehicle. The control unit 60 acquires information indicating the temperature inside the vehicle detected by the first temperature sensor 51 and information indicating a preset target temperature, calculates a target exhaust temperature based on the difference between the temperature inside the vehicle and the target temperature indicated by the information, and switches the mode of the ventilation path selection switching unit 35 according to the calculated target exhaust temperature.

[0284] Accordingly, the mode can be switched based on the target temperature. Therefore, if the target temperature is set to a person's preferred temperature, a more comfortable air-conditioned environment can be provided for the person sitting in seat 1.

[0285] In this embodiment, it also achieves the same effect as described above.

[0286] (Implementation Method 3)

[0287] In this embodiment, the difference from the vehicle seat air conditioning device 3 in Embodiment 2 is that the mode is automatically switched based on a table showing the correlation between the temperature inside the vehicle and the elapsed time. Other structures in this embodiment are the same as in Embodiment 2; the same reference numerals are used for the same structures and functions, and detailed descriptions related to the structure and function are omitted.

[0288] Figure 10 This is a block diagram showing the vehicle seat air conditioning unit 3 in embodiment 3.

[0289] like Figure 10 As shown, the control unit 60 includes a storage unit 61. The storage unit 61 stores a table showing the correlation between the temperature inside the vehicle and the elapsed time of continuous exhaust of conditioned air from the vehicle's air conditioning unit. This table will be described later. Figure 12 As shown in the diagram, the control unit 60 reads a table from the storage unit 61 and uses the read table to automatically switch the mode of the ventilation path selection switching unit 35 over time based on the temperature inside the vehicle. Furthermore, the control unit 60 can change the mode switching of the ventilation path selection switching unit 35 to automatic mode or manual mode by receiving instructions from the operation unit 65.

[0290] Furthermore, in this embodiment 3, a structure is shown that stores the correlation between the temperature inside the vehicle and the elapsed time of continuous exhaust of air-conditioned air from the vehicle's air conditioning unit in the form of a table. However, this is not a limitation; an approximate formula representing the correlation between the two can also be calculated in advance and stored in the storage unit 61. Then, the control unit 60 can also calculate the temperature inside the vehicle by substituting the elapsed time into the approximate formula.

[0291] Furthermore, the control unit 60 can use a timing unit such as a timer to measure the elapsed time. The timing unit can be mounted on the control unit 60 or set up independently of the control unit 60.

[0292] Additionally, the control unit 60 acquires information indicating the temperature around the vehicle (hereinafter referred to as the initial vehicle ambient temperature) and estimates the temperature inside the vehicle based on this acquired information. In other words, the control unit 60 estimates an estimated temperature (hereinafter referred to as the estimated initial interior temperature) that serves as the temperature inside the vehicle based on the initial vehicle ambient temperature. The initial vehicle ambient temperature can also be acquired from a temperature sensor mounted on the vehicle, a device located outside the vehicle, or the like.

[0293] Storage unit 61 is a storage device such as ROM (Read Only Memory) or flash memory. Alternatively, control unit 60 may not have storage unit 61, or storage unit 61 may be located outside control unit 60 and connected to control unit 60 in a manner that enables information communication.

[0294] In the storage unit 61, a table is stored for each estimated initial indoor temperature, showing the correlation between the current indoor temperature and the elapsed time of continuous exhaust of air conditioning air from the vehicle's air conditioning unit.

[0295] <Processing>

[0296] Figure 11 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3 in Embodiment 3. Figure 11 The example illustrates the cooling operation of a vehicle's air conditioning unit. Figure 12 This is a schematic diagram showing the mode of switching the ventilation path selection unit 35 according to the target exhaust temperature, and a schematic diagram showing the relationship between elapsed time and estimated temperature. Additionally, the following example illustrates the case where the mode is automatically switched in the order of the second mode, the third mode, and the first mode. Furthermore, in... Figure 11 In the above, regarding the description in Implementation Method 2 Figure 8 The flowchart uses the same processing labels as the attached figures, and detailed descriptions are omitted.

[0297] like Figure 11 As shown, the control unit 60 first acquires information indicating the initial ambient temperature of the vehicle (S31).

[0298] Next, the control unit 60 calculates an estimated initial indoor temperature based on the acquired information (S32). For example, in Figure 12 In the process, the control unit 60 acquires information representing the initial ambient temperature of the vehicle, and thereby the control unit 60 calculates and estimates the initial indoor temperature Tr0.

[0299] Furthermore, the control unit 60 can also correct the estimated initial indoor temperature Tr0 based on information obtained from a solar radiation sensor, a temperature sensor inside the vehicle, a humidity sensor inside the vehicle, a skin temperature sensor, and a temperature sensor used to detect the surface temperature of the seat 1. Figure 11 This process was not performed in the flowchart.

[0300] The control unit 60 reads from the storage unit 61 Figure 12 A table showing the correlation between the current indoor temperature Tr and elapsed time is provided. The control unit 60 calculates the current indoor temperature Tr corresponding to the elapsed time based on this table read from the storage unit 61 (S33). That is, the control unit 60 calculates the current indoor temperature Tr, which changes over time from an estimated initial indoor temperature Tr0, when the vehicle air conditioning unit is activated, based on this table. For example, in... Figure 12 In the process, the vehicle's air conditioning unit is continuously driven, and the control unit 60 calculates the current indoor temperature Tr1 after an elapsed time t1 based on the table.

[0301] Then, the control unit 60 calculates the target discharge temperature (S22), selects a mode (S23), determines the air supply volume (S24), and if it is the third mode ("Yes" in S25), adjusts the mixing ratio in the third mode (S26), and executes the selected mode (S27). These actions are related to... Figure 8 The details are the same, therefore, they are omitted.

[0302] Next, the control unit 60 determines whether the current indoor temperature Tr has reached the target temperature (S34). If the current indoor temperature Tr has reached the target temperature ("Yes" in S34), the control unit 60 terminates. Figure 11 On the other hand, if the current indoor temperature Tr does not reach the target temperature ("No" in S34), the control unit 60 returns to step S33 and repeats step S33 and subsequent processing until the current indoor temperature Tr reaches the target temperature.

[0303] Through such processing, such as Figure 12 As shown, the control unit 60 automatically switches modes in the order of second mode, third mode, and first mode. That is, if the current indoor temperature Tr becomes Tr1, the control unit 60 switches from the second mode to the third mode; if the current indoor temperature Tr becomes Tr2, the control unit 60 switches from the third mode to the first mode.

[0304] Furthermore, in the above process, if an instruction to end the automatic mode switching is received from the operation unit 65, the control unit 60 may switch to manual mode. In this case, the control unit 60 may also directly execute the switched mode.

[0305] Furthermore, there are cases where the modes are switched in a reverse order, unlike the order of the second, third, and first modes, depending on changes in the vehicle's surrounding environment while driving; this is not limited to the above description. In cases where the order is reversed, to suppress frequent switching between modes, as follows... Figure 12 The switching is performed in a lag manner as shown.

[0306] Furthermore, when operating in heating mode, the sequence of mode switching is the same as described above. In this case, Figure 12 The relationship between elapsed time and the current indoor temperature Tr becomes an inverted relationship relative to the elapsed time axis. In other words, when operating in heating mode, the relationship between elapsed time and the current indoor temperature Tr converges to a constant after the current indoor temperature Tr rises over time.

[0307] <Effects>

[0308] Next, the effects of the vehicle seat air conditioning unit 3 in this embodiment will be explained.

[0309] As described above, in the vehicle seat air conditioning unit 3 according to this embodiment, the control unit 60 switches the mode of the ventilation path selection switching unit 35 based on a table showing the correlation between the temperature inside the vehicle and the elapsed time of the continuous exhaust of air conditioning air from the vehicle air conditioning unit installed in the vehicle.

[0310] Accordingly, the mode of the ventilation path selection switching unit 35 can be automatically switched based on the table. As a result, the vehicle seat air conditioning unit 3 can be controlled independently of the vehicle air conditioning unit.

[0311] In this embodiment, it also achieves the same effect as described above.

[0312] (Implementation Method 4)

[0313] In this embodiment, the difference from the vehicle seat air conditioning device 3 in Embodiment 2 is that the control unit 60 temporarily switches to a second mode based on temperature changes. The other structures in this embodiment are the same as in Embodiment 2; the same reference numerals are used for identical structures and functions, and detailed descriptions related to structure and function are omitted.

[0314] When the ventilation path selection switching unit 35 is in a mode other than the second mode, and the temperature changes detected by the first temperature sensor 51 and the second temperature sensor 52 are within the specified temperature range throughout the second specified period, the control unit 60 temporarily switches the ventilation path selection switching unit 35 to the second mode. Here, the second specified period is assumed to be several tens of minutes after the tension is interrupted. For example, the second specified period is approximately 30 minutes. However, this is just one example, and the second specified period is not limited to 30 minutes. Here, the specified temperature range is assumed to be a range of several degrees Celsius after the temperature has stabilized. For example, the specified temperature range is approximately 1°C or 2°C. However, this is just one example, and the specified temperature range is not limited to 1°C or 2°C.

[0315] <Processing>

[0316] Figure 13 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3 in Embodiment 4.

[0317] The control unit 60 determines whether the ventilation path selection switching unit 35 has selected a mode other than the second mode at the current time (S41).

[0318] If the ventilation path selection switching unit 35 selects the second mode at the current time and does not select a mode other than the second mode (in S41, it is "No"), the control unit 60 ends the flowchart.

[0319] On the other hand, if the ventilation path selection switching unit 35 selects a mode other than the second mode at the current time ("yes" in S41), the control unit 60 determines whether the temperature change detected by the first temperature sensor 51 and the second temperature sensor 52 is within the specified temperature range.

[0320] If the control unit 60 determines that the temperature change is not within the specified temperature range (in S42, it is "No"), the flowchart ends.

[0321] On the other hand, if the control unit 60 determines that the temperature change is within the specified temperature range ("yes" in S42), it determines whether the temperature change has passed through the second specified period (S43).

[0322] If the control unit 60 determines that the temperature change has not gone through the second specified period (in S43, it is "No"), the process returns to step S41.

[0323] On the other hand, if the control unit 60 determines that the temperature change has lasted for a second predetermined period ("Yes" in S43), it performs control to temporarily select the second mode for the ventilation path selection switching unit 35. As a result, the ventilation path selection switching unit 35 switches from the mode selected at the current time to the second mode (S44).

[0324] The control unit 60 determines whether a third prescribed period (S45) has elapsed since the ventilation path selection switching unit 35 temporarily selected the second mode.

[0325] If the control unit 60 determines that no third specified period has elapsed since the ventilation path selection switching unit 35 temporarily selected the second mode (in S45, this is "No"), the process returns to step S44.

[0326] On the other hand, if the control unit 60 determines that a third predetermined period has elapsed since the ventilation path selection switching unit 35 temporarily selected the second mode (in S45, this is "Yes"), it controls the ventilation path selection switching unit 35 to select the mode immediately preceding the selection of the second mode. Thus, the ventilation path selection switching unit 35 switches from the second mode to the mode immediately preceding the selection of the second mode (S46). The mode of the ventilation path selection switching unit 35 is restored to the selected mode. Then, the control unit 60 ends the flowchart.

[0327] <Effects>

[0328] Next, the effects of the vehicle seat air conditioning unit 3 in this embodiment will be explained.

[0329] As described above, in the vehicle seat air conditioning unit 3 of this embodiment, when the ventilation path selection switching unit 35 is in a mode other than the second mode and the temperature change detected by the first temperature sensor 51 and the second temperature sensor 52 is within the specified temperature range throughout the second specified period, the control unit 60 temporarily switches the ventilation path selection switching unit 35 to the second mode.

[0330] Therefore, since air is not intake from the seat surface 11c only in the second mode, the airflow surrounding the body temporarily disappears when switching from a mode other than the second mode to the second mode. Thus, the person sitting in the seat 1 can easily perceive the change in airflow. Furthermore, if the temperature remains stable, potentially relieving the tension of the person sitting in the seat 1, air with a temperature difference can be blown out from the exhaust vent. Therefore, the vehicle seat air conditioning unit 3 can alert the person sitting in the seat 1.

[0331] In this embodiment, it also achieves the same effect as described above.

[0332] (Implementation Method 5)

[0333] In this embodiment, the structure for drawing air from the side of the seat 1 differs from that of the vehicle seat air conditioning device in Embodiment 1, etc. Other structures in this embodiment are the same as in Embodiment 1, etc. The same reference numerals are used for identical structures and functions, and detailed descriptions related to structure and function are omitted.

[0334] <Structure>

[0335] Figure 14 This is a perspective view showing the appearance of the vehicle air conditioning unit 2b in embodiment 5, which is arranged in the interior of the vehicle 100. Figure 15 This is a perspective view showing the appearance of the vehicle seat air conditioning unit 3c in embodiment 5.

[0336] like Figure 14 As shown, the vehicle 100 is equipped with a driver's seat, a passenger seat, a center console 2a, and an air conditioning unit 2b.

[0337] The driver's seat and the passenger seat are seats 1 for occupants, arranged along the width direction (left-right direction) of the vehicle 100. A center console 2a is located in the central portion between the driver's seat and the passenger seat of the vehicle 100, separating them. Furthermore, the term "between the driver's seat and the passenger seat" refers not only to the space between the driver's seat and the passenger seat, but also to the space from the driver's seat to the passenger seat, including both. The vehicle 100 is equipped with a center console 2a. The center console 2a is a long strip along the long side of the vehicle 100 and is connected to the dashboard of the vehicle 100. An air conditioning unit 2b is an air conditioning device for regulating the air inside the vehicle. Specifically, the air conditioning unit 2b is mounted on the body of the vehicle 100 and is covered by the dashboard of the vehicle 100. In this embodiment, an exhaust port 2c of the air conditioning unit 2b, such as an air conditioner, located in the central portion of the width direction (left-right direction) of the vehicle 100 is shown.

[0338] like Figure 14 and Figure 15 As shown, the seat 1 equipped in the vehicle 100, etc., cools or warms the person sitting in the seat 1 by blowing air towards their upper body. Specifically, the seat 1 can cool or warm the person's body by blowing air towards their head, neck, shoulders, back, waist, buttocks, and thighs. Furthermore, it can also regulate the air inside the vehicle 100 by drawing in air from a second air intake 532a located on the side of the seat 1 and generating airflow between the second air intake 532a and the exhaust port 2c of the air conditioning unit 2b used in the vehicle 100. The seat 1 is a general term for the driver's seat and the front passenger seat. In this embodiment, the driver's seat is used as an example of the seat 1 for explanation.

[0339] This vehicle 100 is equipped with a power supply unit 70 and a vehicle seat air conditioning unit 3c with a seat 1.

[0340] [Vehicle Seat Air Conditioning Unit 3c]

[0341] The vehicle seat air conditioning unit 3c is an air conditioning unit for regulating the air in the passenger compartment of the vehicle 100. The vehicle seat air conditioning unit 3c blows air from behind a person sitting in seat 1. The vehicle seat air conditioning unit 3c performs air supply by drawing in air lingering around seat 1 and expelling the drawn-in air. Therefore, if the temperature around seat 1 is higher than normal, it provides warm air; if the temperature is lower than normal, it provides cool air. Furthermore, the vehicle seat air conditioning unit 3c can also be equipped with an air conditioner capable of both heating and cooling.

[0342] Figure 16 This is a plan view showing the vehicle seat air conditioning unit 3c in embodiment 5. Figure 17This is a side view showing the vehicle seat air conditioning unit 3c in embodiment 5. Figure 16 and Figure 17 The interior of the vehicle seat air conditioning unit 3c is shown to be exposed. Figure 18 This is a block diagram showing the vehicle seat air conditioning unit 3c in embodiment 5.

[0343] like Figures 15-18 As shown, the vehicle seat air conditioning unit 3c includes a seat 1, a blower 34, a second ventilation path 532, an exhaust outlet temperature sensor 50, and a control unit 60.

[0344] like Figures 15-17 As shown, the second seat cushion 13a is provided with: a second ventilation path 532 for blowing air drawn in from the second air inlet 532a out from the outlet 33a; and a blower 34 for guiding air from the second air inlet 532a to the outlet 33a in the second ventilation path 532. Driven by the blower 34, air flows into the second air inlet 532a provided in the second seat cushion 13a, the flowing air is guided to the second ventilation path 532 and blown out from the outlet 33a.

[0345] like Figure 17 As shown, the seat frame 13c is built into the seat back 13. The seat frame 13c is a skeletal member that supports the second seat cushion 13a in a predetermined posture by mounting the second seat cushion 13a. The seat frame 13c is supported by the first seat cushion 11a in a manner that allows it to rotate about the Y-axis relative to the seat portion 10.

[0346] The second seat cover 13b has a first vent 12a for drawing in air and a second vent 12b for blowing out the drawn-in air.

[0347] The first vent 12a is formed on the side portion 13a1 (the left side portion 13a1 when a person is seated on the seat 1) on the positive Y-axis direction, facing the passenger seat of the vehicle 100, and is formed at a position corresponding to the second air intake 532a. In this embodiment, a plurality of first vents 12a are formed on the second seat cover 13b.

[0348] The first vent 12a is used to allow the intake air to pass through. That is, driven by the blower 34, the air surrounding the first vent 12a is guided to the second ventilation path 532 via the first vent 12a and the second air inlet 532a. Therefore, the first vent 12a also becomes a second air inlet that draws in the air surrounding the first vent 12a through the suction force from the second air inlet 532a. Furthermore, the first vent 12a can also be part of the second ventilation path 532. In this case, the first vent 12a becomes an example of the second air inlet 532a.

[0349] The second vent 12b is formed at a position corresponding to the outlet 33a of the second ventilation path 532 on the surface facing the person sitting on the seat 1 (the surface on the positive X-axis direction). The second vent 12b is positioned higher than the first vent 12a, that is, on the vertically above side or the positive Z-axis side. In this embodiment, a plurality of second vents 12b are formed on the second seat cover 13b.

[0350] The second vent 12b is used to allow air guided to the second ventilation path 532 and discharged from the second air inlet 532a to pass through. That is, when air guided to the second ventilation path 532 by the blower 34 is discharged from the outlet 33a, the air is guided to the second vent 12b. Therefore, the second vent 12b also serves as an outlet for blowing air outwards from the seat 1. Furthermore, the second vent 12b can also be part of the second ventilation path 532. In this case, the second vent 12b becomes an example of the outlet 33a.

[0351] Furthermore, in this embodiment, the driver's seat has been described as an example of seat 1 as described above, but the same applies when another example of seat 1 is a passenger seat. When another example of seat 1 is a passenger seat, it becomes a structure that is symmetrical to the driver's seat with respect to the XZ plane.

[0352] The headrest 15 is a head cushion used to support the head of a person sitting in the seat 1. The headrest 15 is fixed to the end of the seat back 13 on the positive Z-axis side.

[0353] Furthermore, the second vent 12b may also be formed in the headrest 15. That is, it may also be part of the second ventilation path 532 provided in the headrest 15.

[0354] [Blower 34]

[0355] like Figures 16-18 As shown, the blower 34 is used to deliver air from the second air inlet 532a to the outlet 33a. The blower 34 is capable of drawing in air from the first vent 12a formed in the second seat cushion 13a of the seat 1 and blowing the drawn-in air out from the second vent 12b formed in the second seat cushion 13a. Specifically, the blower 34 is electrically connected to the control unit 60, and the blower 34 is driven and controlled by the control unit 60 to draw in air from the second air inlet 532a through the first vent 12a, guide the drawn-in air to the second ventilation path 532, and blow it out from the outlet 33a.

[0356] The blower 34 is disposed in the second ventilation path 532 to draw in air directly or indirectly from the second air inlet 532a; that is, the blower 34 is disposed inside the second seat cushion 13a. The blower 34 may also be fixed to the seat frame 13c, for example. Furthermore, in this embodiment, the blower 34 is disposed on the second ventilation path 532; however, as long as an airflow path can be formed in the second ventilation path 532, the blower 34 may also be disposed on the outside of the second ventilation path 532. The blower 34 may also be disposed on the outside of the seat back 13; the placement position is not particularly limited.

[0357] [Second ventilation path 532]

[0358] The second ventilation path 532 is used to guide air drawn in from the second air inlet 532a to the outlet 33a via the blower 34. In other words, air flows within the second ventilation path 532. Additionally, the second ventilation path 532 is used to blow air drawn in from the second air inlet 532a out from the outlet 33a of the seat back 13 provided on the seat 1. The second ventilation path 532 is, for example, constituted by a ventilation duct. The second ventilation path 532 connects the second air inlet 532a to the outlet 33a; that is, one end of the second ventilation path 532 forms the second air inlet 532a, and the other end forms the outlet 33a.

[0359] The second air inlet 532a allows air to be drawn in from the side portion 13a1 of the seat 1. A breathable second seat cover 13b is provided at the second air inlet 532a. Specifically, the second seat cover 13b is formed such that a first portion of the first vent 12a covers the second air inlet 532a, thereby ensuring air intake from the second air inlet 532a. The first portion of the second seat cover 13b is an example of a cover. Furthermore, in this embodiment, air is drawn in through the second air inlet 532a via the first vent 12a, but it could also be a structure that directly draws in air.

[0360] Additionally, using Figure 19 The structure of the second air inlet 532a will be explained.

[0361] Figure 19 yes Figure 15 A cross-sectional view of the vehicle seat air conditioning unit 3c at the XIX-XIX line. (See attached image.) Figure 19 As shown in a, the second air intake 532a is formed only on the side portion 13a1 of the seat 1. Figure 19 a corresponds to Figure 14 Etc. Additionally, such as Figure 19 As shown in b, the second air intake 532a may also be formed only on the back portion 13a3 of the seat 1 on the opposite side of the surface portion 13a2 that contacts the person sitting on the seat 1. Additionally, as... Figure 19 As shown in c, the second air intake 532a can also be formed at the corner of the seat 1 that spans from the side portion 13a1 to the rear portion 13a3.

[0362] like Figures 15-17 As shown, the outlet 33a can blow out air drawn in from the second air inlet 532a, that is, air guided to the second ventilation path 532 can be blown out from the surface portion 13a2 on the X-axis positive direction side of the seat 1. A breathable second seat cover 13b is provided at the outlet 33a. Specifically, the second seat cover 13b is formed with a second portion of the second vent 12b covering the outlet 33a, thereby ensuring the airflow from the outlet 33a. The second portion of the second seat cover 13b is also an example of a cover. Furthermore, in this embodiment, air is blown out from the outlet 33a via the second vent 12b, but it could also be a structure that blows air out directly.

[0363] Additionally, a blade 33b is provided at the outlet 33a to guide the air blown out of the outlet 33a in a predetermined direction. Furthermore, the blade 33b can also be configured in a position capable of rotating about the Y-axis. In this case, by tilting the blade 33b, the direction of the air blown out of the outlet 33a can be changed. Furthermore, the blade 33b can also be... Figure 18 The control unit 60 controls the rotation.

[0364] Furthermore, the blade 33b is positioned vertically above the center in the height direction of the outlet 33a. That is, the blade 33b is not positioned vertically below the center in the height direction of the outlet 33a. When air is blown out of the outlet 33a where the blade 33b is located, the air, being a viscous fluid, is drawn to the blade 33b due to the Coanda effect. Therefore, air is blown out of the outlet 33a along the surface of the blade 33b, easily generating a downward airflow.

[0365] Such a blade 33b is a component of the vehicle seat air conditioning unit 3c. Alternatively, the blade 33b may not be provided at the outlet 33a, and the blade 33b is not a necessary component of the vehicle seat air conditioning unit 3c.

[0366] In addition, such as Figure 15 , Figure 16 as well as Figure 20 As shown, one or more three-dimensional structures 39 are configured within the second ventilation path 532. Figure 20This is a perspective view of the three-dimensional structure 39. The three-dimensional structure 39 is formed into a honeycomb structure by bundling multiple hexagonal tubes 39a together. The three-dimensional structure 39 is open along its long side, allowing air to pass through. The three-dimensional structure 39 is positioned so as to guide the air to the second ventilation path 532, thereby ensuring a constant strength within the second ventilation path 532. In this embodiment, the three-dimensional structure 39 is preferably located in the portion of the second ventilation path 532 near the outlet 33a. When seated in the seat 1, even if a person leans against the seat back 13, the three-dimensional structure 39 can prevent the second ventilation path 532 from being compressed, further ensuring airflow. Furthermore, in this embodiment, the tubes 39a are hexagonal, but not limited to this; they can also be polygons with 5 or fewer sides or 7 or more sides. In addition, the three-dimensional structure 39 can also be composed of tubes of various polygonal shapes. Furthermore, in this embodiment, the three-dimensional structure 39 is tubular, but it can also be plate-shaped, i.e., a mesh with multiple hexagonal openings.

[0367] Such a three-dimensional structure 39 is a component of the vehicle seat air conditioning unit 3c. Alternatively, the three-dimensional structure 39 may not be provided in the second ventilation path 532, and the three-dimensional structure 39 is not a necessary component of the vehicle seat air conditioning unit 3c.

[0368] Such a second ventilation path 532 Figure 16 and Figure 17 As shown, it has a first air supply path 232a and a second air supply path 232b.

[0369] The first air supply path 232a extends from the second air inlet 532a along the negative Y-axis to the central portion of the second seat cushion 13a, then bends and extends further by a predetermined amount along the positive Z-axis. For example... Figure 16 As shown, when viewed along the X-axis, the first air supply path 232a is L-shaped. One end of the first air supply path 232a forms the second air inlet 532a, and the other end of the first air supply path 232a is connected to the second air supply path 232b. A blower 34 is disposed inside the first air supply path 232a.

[0370] The second air intake 532a is positioned higher than the center console 2a. That is, the second air intake 532a is positioned vertically above the center console 2a. Thus, for example, the second air intake 532a is positioned at a height corresponding to the exhaust outlet 2c of the air conditioning unit 2b, such as the air conditioner, which is located in the center of the instrument panel of the vehicle 100, thereby being able to draw in air containing conditioned air blown out from the exhaust outlet 2c of the air conditioning unit 2b and remaining between the driver's seat and the passenger seat.

[0371] In addition, such as Figure 17 As shown in Figure a, when viewing the seat back 13 along the arrangement direction of the driver's seat and the passenger seat (Y-axis direction), the second air intake 532a overlaps with the seat frame 13c, or as shown in Figure a. Figure 17 As shown in b, the second air intake 532a is positioned on the back side 13a3, opposite to the surface portion 13a2 that contacts the person sitting in the driver's seat, compared to the seat frame 13c. In this embodiment, when the seat back 13 is viewed along the Y-axis, the second air intake 532a overlaps with the seat frame 13c.

[0372] The second air supply path 232b extends from the front end of the first air supply path 232a and further extends to both sides along the positive and negative Y-axis directions. For example... Figure 16 As shown, when viewed along the X-axis, the second air supply path 232b is straight. The second air supply path 232b essentially constitutes the outlet 33a. Blades 33b are provided in the second air supply path 232b that constitutes the outlet 33a.

[0373] Furthermore, the exhaust outlet 33a is positioned higher than the second air inlet 532a, that is, positioned in the positive Z-axis direction (vertically above) than the second air inlet 532a. Additionally, the exhaust outlet 33a is not limited to being positioned at... Figure 16 The position is configured to correspond to at least one of the following parts of a person: head, neck, acromion, back, waist, hips, and thighs.

[0374] In addition, such as Figure 15 and Figure 16 As shown, a three-dimensional structure 39 is provided in at least one of the first air supply path 232a and the second air supply path 232b. In this embodiment, the three-dimensional structure 39 is provided in the first air supply path 232a. Alternatively, it may be provided in the second air supply path 232b as a portion near the outlet 33a, but configured in a manner that does not block the outlet 33a.

[0375] According to the structure of such a vehicle seat air conditioning unit 3c, air trapped between the driver's seat and the passenger seat is drawn in, and the drawn-in air is blown out from the parts corresponding to the person's head, neck, shoulder, back, waist, hips and thighs, thereby generating an airflow surrounding the person sitting in seat 1.

[0376] Furthermore, when air is blown out from the outlet 33a, airflow is generated between the blade 33b and the inner wall of the second air supply path 232b, and between two adjacent blades 33b, at a position slightly above the center of the outlet 33a. This causes air to move along the surface of the blade 33b and the inner wall of the second air supply path 232b. Consequently, through the Coanda effect, air movement also occurs at the outlet 33a at a position slightly below the center of the outlet 33a, i.e., air is blown out. The air blown out from the outlet 33a through the Coanda effect flows in the negative Z-axis direction relative to the X-axis direction. Therefore, an airflow can be generated that surrounds the head and thighs of a person sitting in the seat. In other words, air can be directed towards the person sitting in the driver's or passenger's seat, following their posture.

[0377] [Outlet temperature sensor 50]

[0378] like Figures 16-18 As shown, the outlet temperature sensor 50 is disposed near the outlet 33a to detect the temperature near the outlet 33a. For example, the outlet temperature sensor 50 can detect the temperature of the air blown out from the outlet 33a. Furthermore, the outlet temperature sensor 50 can be disposed either inside the outlet 33a, i.e., within the second air supply path 232b, or outside the second ventilation path 532, i.e., around the outlet 33a. The outlet temperature sensor 50 outputs information indicating this temperature as a detection result to the control unit 60.

[0379] [Control Department 60]

[0380] The control unit 60 controls the blower 34 based on the temperature detected by the outlet temperature sensor 50. For example, if the temperature detected by the outlet temperature sensor 50 is above a threshold, the control unit 60 sets the airflow of the blower 34 to a first airflow rate. Conversely, if the temperature detected by the outlet temperature sensor 50 is below the threshold, the control unit 60 sets the airflow of the blower 34 to a second airflow rate, which is smaller than the first airflow rate. In other words, if the temperature detected by the outlet temperature sensor 50 is high, the control unit 60 controls the blower 34 by increasing its airflow rate; if the temperature detected by the outlet temperature sensor 50 is low, the control unit 60 controls the blower 34 by decreasing its airflow rate. Furthermore, the threshold is, for example, around 18°C, but the temperature can be set appropriately and is not limited to 18°C. For example, the threshold can also vary depending on the season.

[0381] <Simulation Results>

[0382] Figure 21 This is a graph showing the simulation results of the airflow velocity blown out from the exhaust port. Figure 21 a1 indicates an outlet without blades. Figure 21 a2 is shown from Figure 21 The simulation results of the air velocity blown out of the outlet of a1. Figure 21 b2 shows the discharge outlet with blades positioned at the center in the height direction of the discharge outlet. Figure 21 b2 is showing from Figure 21 The simulation results of the air velocity blown out of the outlet of b1. Figure 21 c1 shows the case where a blade is installed at a position vertically above the center in the height direction of the outlet. Figure 21 c2 is shown from Figure 21 The simulation results of the air velocity blown out of the outlet of c1. Figure 21 d1 shows an outlet with one blade at the center in the height direction of the outlet, and another blade positioned vertically above the center. Figure 21 d2 is shown from Figure 21 The simulation results show the air velocity at the outlet of d1. Furthermore, Figure 21 a1, b1, c1, and d1 are schematic diagrams of the second ventilation path when viewed along the Y-axis.

[0383] It can be known that in Figure 21 In case a2, the air blown out from the exhaust port extends along a normal direction orthogonal to the opening surface of the exhaust port. Figure 21 In the case of b2, it did not show any similarity to Figure 21 The situation for a2 is quite different. On the other hand, it can be seen that... Figure 21 c2 and Figure 21 In the case of d2, with Figure 21 a2 and Figure 21 Compared to case b2, the air flows in the negative Z-axis direction relative to the X-axis direction, as if drawing an arc.

[0384] Therefore, in this embodiment, the blade 33b is configured to be positioned vertically above the center in the height direction of the outlet 33a.

[0385] <Processing>

[0386] Figure 22 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3c in the embodiment.

[0387] First, such as Figure 22As shown, the outlet temperature sensor 50 detects the temperature near the outlet 33a (S51). The outlet temperature sensor 50 outputs information indicating this temperature as a detection result to the control unit 60. The control unit 60 obtains the temperature information from the outlet temperature sensor 50. The control unit 60 controls the blower 34 based on the temperature indicated by the obtained information, that is, the temperature near the outlet 33a detected by the outlet temperature sensor 50.

[0388] Next, the control unit 60 determines whether the temperature detected by the outlet temperature sensor 50 is above the threshold (S52).

[0389] If the temperature detected by the outlet temperature sensor 50 is above the threshold ("Yes" in S52), the control unit 60 controls the airflow of the blower 34 to a first airflow (S53). Specifically, if the temperature detected by the outlet temperature sensor 50 is above the threshold, the control unit 60 increases the airflow of the blower 34 by setting the airflow of the blower 34 to "Strong".

[0390] If the temperature detected by the outlet temperature sensor 50 is lower than the threshold ("No" in S52), the control unit 60 controls the airflow of the blower 34 to a second airflow, which is smaller than the first airflow (S54). Specifically, if the temperature detected by the outlet temperature sensor 50 is lower than the threshold, the control unit 60 increases the airflow of the blower 34 by setting the airflow of the blower 34 to "weak". Then, the control unit 60 ends the process.

[0391] <Effects>

[0392] Next, the effects of the vehicle seat air conditioning device 3c in this embodiment will be explained.

[0393] As described above, regarding the vehicle seat air conditioning device 3c of this embodiment, the driver's seat and the passenger seat of the vehicle seat 1 have seat backrests 13. The second air inlet 532a is formed at any of the following locations: the side portion 13a1 of the driver's seat seat backrest 13 facing the passenger seat, the back portion 13a3 of the driver's seat seat backrest 13 opposite to the surface portion 13a2 that contacts the person sitting in the driver's seat, and the corner portion of the driver's seat seat backrest 13 that extends from the side portion 13a1 to the back portion 13a3; or the second air inlet 532a is formed at any of the following locations: the side portion 13a1 of the passenger seat seat backrest 13 facing the driver seat, the back portion 13a3 of the passenger seat seat backrest 13 opposite to the surface portion 13a2 that contacts the person sitting in the passenger seat, and the corner portion of the passenger seat seat backrest 13 that extends from the side portion 13a1 to the back portion 13a3.

[0394] Accordingly, the second air intake 532a can be positioned on the side portion 13a1, the rear portion 13a3, or a corner, thus ensuring a high degree of freedom in its configuration. Furthermore, the second air intake 532a can be formed not only on the side portion 13a1 of the driver's and passenger's seats, but also extending to the rear portion 13a3 of the driver's and passenger's seats, thereby maximizing the opening area of ​​the second air intake 532a. Therefore, the second air intake 532a can more efficiently draw in air blown from the air conditioning unit.

[0395] Furthermore, the exhaust outlet 2c of the vehicle air conditioning unit 2b (hereinafter sometimes referred to as the exhaust outlet 2c of the air conditioning unit 2b) is typically located on the dashboard of the vehicle 100. The exhaust outlet 2c of the air conditioning unit 2b blows conditioned air, i.e., air conditioning air, toward the driver's seat and the passenger seat.

[0396] In the vehicle seat air conditioning unit 3c of this embodiment, the second air intake 532a is located between the driver's seat and the passenger seat. Therefore, the air conditioning air blown out from the exhaust port 2c of the air conditioning unit 2b is drawn in through the second air intake 532a after conditioning the surrounding air. As a result, the air conditioning efficiency in the vehicle interior is not easily reduced.

[0397] Furthermore, since the second air intake 532a is located in a position where people are unlikely to be present in the space between the outlet 2c of the vehicle air conditioning unit 2b and the second air intake 532a, the air conditioning air blown out from the outlet 2c of the air conditioning unit 2b is less likely to be obstructed by people sitting in the driver's seat and the passenger seat.

[0398] Therefore, the vehicle seat air conditioning unit 3c can suppress the reduction of air conditioning efficiency in the vehicle interior, and can efficiently draw in the air blown out from the vehicle air conditioning unit 2b and blow it toward the person.

[0399] In particular, the second air intake 532a can draw in ambient air containing air conditioning air without being affected by external interference such as differences in body size or sitting posture. Therefore, by reusing the air conditioning air from the vehicle air conditioning unit 2b, the vehicle's energy consumption can be suppressed.

[0400] Furthermore, this structure eliminates the need for piping to connect the vehicle air conditioning unit 2b to the vehicle seat air conditioning unit 3c, thus reducing the manufacturing cost of the vehicle seat air conditioning unit 3c. Additionally, the absence of piping prevents the vehicle interior from becoming cramped.

[0401] Furthermore, regarding the vehicle seat air conditioning unit 3c of this embodiment, in the vehicle 100, a center console 2a is provided between the driver's seat and the passenger seat. Moreover, the second air intake 532a is positioned higher than the center console 2a.

[0402] Therefore, the second air intake 532a can be positioned at a certain height, so that the outlet 2c of the air conditioning unit 2b and the second air intake 532a are not easily obstructed by obstacles such as the center console 2a. Thus, the second air intake 532a can efficiently draw in air blown out from the air conditioning unit 2b.

[0403] Furthermore, regarding the vehicle seat air conditioning unit 3c of this embodiment, both the driver's seat and the passenger seat have a structure in which a seat frame 13c is built into the seat back 13. Moreover, when viewed along the arrangement direction of the driver's seat and the passenger seat, the second air intake 532a overlaps with the seat frame 13c, or the second air intake 532a is positioned on the back portion 13a3 side, opposite to the surface portion 13a2 that is in contact with the person sitting in the driver's seat, compared to the seat frame 13c.

[0404] Therefore, it ensures cushioning in the driver's and passenger's seats when people are seated, thus reducing discomfort. Furthermore, it reduces the possibility of hand movements obstructing air intake.

[0405] In addition, regarding the vehicle seat air conditioning device 3c of this embodiment, a breathable sleeve is provided at the second air inlet 532a.

[0406] Therefore, it is possible to ensure the air intake performance from the second air intake 532a, and to avoid compromising the aesthetics of the driver's seat and passenger seat where the second air intake 532a is located.

[0407] In addition, the vehicle seat air conditioning unit 3c of this embodiment includes blades 33b, which are disposed at the outlet 33a and are used to guide the air blown out of the outlet 33a in a predetermined direction.

[0408] Therefore, air can be directed towards the person sitting in the driver's or passenger's seat, following their posture. This provides a more comfortable air-conditioned environment for the person in the driver's or passenger's seat.

[0409] Furthermore, regarding the vehicle seat air conditioning unit 3c of this embodiment, the blade 33b is positioned at the center of the outlet 33a in the height direction, near the vertically upper side.

[0410] Therefore, even in confined spaces such as a car interior, the airflow axis blowing out from the exhaust port 33a via the Coanda effect can be controlled. Thus, air can be directed towards the person seated in the driver's or passenger's seat, aligning with their posture. Consequently, a more comfortable air-conditioned environment can be provided for the occupants of the driver's and passenger's seats.

[0411] Furthermore, the vehicle seat air conditioning unit 3c of this embodiment includes an exhaust outlet temperature sensor 50, which is electrically connected to the control unit 60 and is located near the exhaust outlet 33a. Moreover, the control unit 60 controls the blower 34 based on the temperature detected by the exhaust outlet temperature sensor 50.

[0412] Therefore, the temperature of the air blown towards the people sitting in the driver's seat and the front passenger seat can be detected, and the air volume of the blower 34 can be adjusted appropriately according to the temperature. As a result, a more comfortable air-conditioned environment can be provided for the people sitting in the driver's seat and the front passenger seat.

[0413] Furthermore, in the vehicle seat air conditioning device 3c of this embodiment, if the temperature detected by the outlet temperature sensor 50 is above a threshold, the control unit 60 sets the air volume of the blower 34 to a first air volume; if the temperature detected by the outlet temperature sensor 50 is below the threshold, the control unit 60 sets the air volume of the blower 34 to a second air volume, wherein the second air volume is a smaller air volume than the first air volume.

[0414] Accordingly, for example, if the temperature of the air blown to the people sitting in the driver's seat and the passenger seat is low, the air volume of the blower 34 can be reduced; if the temperature of the air blown to the people sitting in the driver's seat and the passenger seat is high, the air volume of the blower 34 can be increased.

[0415] In addition, the vehicle seat air conditioning device 3c of this embodiment includes a three-dimensional structure 39 disposed in at least one of the first ventilation path 31, the second ventilation path 532 and the third ventilation path 33.

[0416] Therefore, even when people are seated in the driver's seat and the front passenger seat, the second ventilation path 532 can guide air without being compressed. Thus, the second ventilation path 532 can guide air from the second air inlet 532a to the outlet 33a via the blower 34. Therefore, a more comfortable air-conditioned environment can be provided for people seated in the driver's seat and the front passenger seat.

[0417] (Modification 1 of Implementation Method 5)

[0418] In this variation, the difference from the vehicle seat air conditioning device 3c in the embodiment is that, as Figure 23 As shown, a portion of the second ventilation path 131 slopes upward. Figure 23This is a plan view of a seat equipped with the vehicle seat air conditioning unit 3c in Modification 1 of Embodiment 5. Regarding other structures in this modification, unless otherwise explicitly described, they are treated the same as in the embodiment, with the same reference numerals used for the same structures and functions, and detailed descriptions related to structure and function are omitted.

[0419] The portion of the second ventilation path 131 between the second air inlet 532a and the blower 34 is inclined upwards from the second air inlet 532a towards the vertical. Specifically, at least the portion of the first air supply path 232a between the second air inlet 532a and the blower 34 is inclined upwards relative to the XY plane. Therefore, the blower 34 is positioned higher than the second air inlet 532a (vertically above).

[0420] In this modified example of the vehicle seat air conditioning unit 3c, the portion of the second ventilation path 131 between the second air inlet 532a and the blower 34 is inclined upwards from the second air inlet 532a toward the vertically upward side.

[0421] Therefore, even if a person spills a beverage, the liquid is unlikely to enter a position further inside the second air inlet 532a. Thus, malfunctions of electrical devices such as the blower 34, which are located inside the second ventilation path 131, can be suppressed.

[0422] In this variation, it also achieves the same effect as described above.

[0423] (Modification 2 of Implementation Method 5)

[0424] In this modified example, the difference from the vehicle seat air conditioning device of embodiment 5 is that the second air inlet 532a is provided at the corner of the seat back 13. Other structures in this modified example are the same as in embodiment 5, etc. The same reference numerals are used for the same structures and functions, and detailed descriptions related to the structure and function are omitted.

[0425] Figure 24 This is a cross-sectional view showing the second air inlet 532a formed at the corner of the vehicle seat air conditioning unit 3c in Modified Example 2 of Embodiment 5.

[0426] The second air intake 532a is formed at the corner of the seat back 13 of the driver's seat, which extends from the side portion 13a1 to the rear portion 13a3. That is, the second air intake 532a extends from the side portion 13a1 of the seat 1 toward the vehicle compartment opening, and also extends from the rear portion 13a3 of the seat 1 toward the vehicle compartment opening.

[0427] The sleeve is positioned at the corner. Thus, the sleeve covers the second air intake 532a.

[0428] The air permeability of the portion of the sleeve corresponding to the side portion 13a1 of the corner is higher than that of the portion of the sleeve corresponding to the back portion 13a3 of the corner. For example, a through hole is formed in the sleeve for guiding air into the second ventilation path 532. Therefore, the opening area of ​​the through hole corresponding to the back portion 13a3 of the corner is smaller than the opening area of ​​the through hole corresponding to the side portion 13a1 of the corner. As a result, the air permeability of both the portion corresponding to the side portion 13a1 and the portion corresponding to the back portion 13a3 of the corner can be adjusted.

[0429] In this modified example, the second air inlet 532a corresponding to the side portion 13a1 of the corner of the sleeve is called the high-ventilation portion 32a1. Furthermore, the second air inlet 532a corresponding to the back portion 13a3 of the corner of the sleeve is called the low-ventilation portion 32a2. Additionally, the portion of the sleeve corresponding to the side portion 13a1 of the corner is, for example, made of fabric, and the high-ventilation portion 32a1 is configured such that the mesh of the fabric is coarser than that of the low-ventilation portion 32a2.

[0430] Thus, in the vehicle seat air conditioning device of this modified example, the second air inlet 532a is formed at the corner and is sleeved at the corner. Moreover, the air permeability of the part of the sleeve corresponding to the side part 13a1 of the corner is higher than the air permeability of the part of the sleeve corresponding to the back part 13a3 of the corner.

[0431] Therefore, by forming the second air intake 532a at the corner, sufficient air intake volume can be ensured. Furthermore, dust sometimes gets drawn in from the back side 13a3 of the corner, stirred up by the feet of a person sitting in the rear seat. Therefore, the vehicle seat air conditioning unit 3c can suppress dust intake by reducing the permeability of the back side 13a3 of the corner.

[0432] (Implementation Method 6)

[0433] In this embodiment, the difference from the vehicle seat air conditioning unit of Embodiment 1 is that the vehicle seat air conditioning unit 3d also includes an exhaust outlet temperature sensor 50. Other structures in this embodiment are the same as in Embodiment 1, etc. The same reference numerals are used to denote the same structures and functions, and detailed descriptions related to structure and function are omitted.

[0434] Figure 25 This is a block diagram showing a vehicle seat air conditioning unit 3d according to embodiment 6.

[0435] like Figure 25 As shown, the vehicle seat air conditioning unit 3 includes a blower 34, a ventilation path selection and switching unit 35, a first temperature sensor 51, a second temperature sensor 52, a control unit 60, and an operation unit 65, as well as an outlet temperature sensor 50.

[0436] The outlet temperature sensor 50 is electrically connected to the control unit 60.

[0437] Additionally, an outlet temperature sensor 50 is configured, for example, near the outlet 33a, to detect the temperature near the outlet 33a. Figure 25 As shown, the outlet temperature sensor 50 outputs the information indicating the temperature as a detection result to the control unit 60.

[0438] While the ventilation path selection switching unit 35 maintains the mode for a first predetermined period, the control unit 60 controls the blower 34 based on the temperature detected by the outlet temperature sensor 50. Here, the first predetermined period is assumed to be several minutes or so, assuming the mode is stable. For a specific example, the first predetermined period is approximately 5 minutes. However, this is just one example, and the first predetermined period is not limited to 5 minutes.

[0439] <Processing>

[0440] Figure 26 This is a flowchart illustrating the processing of the vehicle seat air conditioning unit 3d in Embodiment 6.

[0441] exist Figure 26 In the middle, to and Figure 4 The same processing and with Figure 22 The same reference numerals are used for the same treatments, and descriptions are omitted where appropriate.

[0442] If the control unit 60 has gone through steps S11 to S13, or if it has gone through steps S11 and S12 with "No", S14 with "Yes" and S15, or if it has gone through steps S11 and S12 with "No", S14 with "No" and S16 and S17, then it proceeds to step S61.

[0443] Next, the control unit 60 determines whether the mode of the ventilation path selection switching unit 35 has been maintained for the first predetermined period (S61).

[0444] If the control unit 60 determines that the mode of the ventilation path selection switching unit 35 has not been maintained for the first predetermined period (in S61, it is "No"), then the process ends. Figure 26 The flowchart is shown. Then, the control unit 60 repeats the process from step S11 onwards.

[0445] On the other hand, if the control unit 60 determines that the mode of the ventilation path selection switching unit 35 has been maintained for a first predetermined period ("Yes" in S61), the outlet temperature sensor 50 detects the temperature near the outlet 33a (S62). The outlet temperature sensor 50 outputs information indicating the detected temperature as a detection result to the control unit 60.

[0446] Next, the control unit 60 acquires information indicating the temperature.

[0447] Then, the control unit 60 terminates the process if it has completed the "yes" and "s53" ​​steps in S52, or if it has completed the "no" and "s54" steps in S52. Figure 26 The flowchart is shown. Then, the control unit 60 repeats the process from step S11 onwards.

[0448] <Effects>

[0449] Next, the effects of the vehicle seat air conditioning unit 3D in this embodiment will be explained.

[0450] As described above, in the vehicle seat air conditioning unit 3d of this embodiment, when the mode of the ventilation path selection switching unit 35 is maintained for a first predetermined period, the control unit 60 controls the blower 34 based on the temperature detected by the outlet temperature sensor 50.

[0451] Therefore, in order to balance control based on the first temperature sensor 51 and control based on the second temperature sensor 52, prioritizing the control based on the first temperature sensor 51 and the control based on the second temperature sensor 52, control of the blower 34 based on the outlet temperature sensor 50 can be performed after the system stabilizes. Thus, the vehicle seat air conditioning unit 3d can perform more precise temperature and airflow adjustments. As a result, a more comfortable air-conditioned environment can be provided.

[0452] In this embodiment, it also achieves the same effect as described above.

[0453] (Other variations, etc.)

[0454] The present disclosure has been described above based on embodiments 1 to 6, but the present disclosure is not limited to these embodiments 1 to 3, etc.

[0455] For example, in the vehicle seat air conditioning devices described in embodiments 1 to 6 above, a seat heater may be provided in the seat. The seat heater is installed in at least one of the seat portion and the seat back of a vehicle or similar seat, and heats the area by generating heat, thereby warming the back, waist, buttocks, and thighs. The seat heater heats the seat according to a heating setting and does not heat the seat according to a non-heating setting. The seat heater may also be located between the first seat cushion and the first seat cover, or between the second seat cushion and the second seat cover. The seat heater may also have a substrate and a heater wire. The substrate may be a sheet-like nonwoven fabric, a cloth-like polyurethane foam, or the like, formed from a material with elasticity, softness, and extensibility. The heater wire may be a conductive wire electrically connected to a control unit for controlling the power supplied to the heater wire, and heated by power from a power source controlled by the control unit. Alternatively, the control unit may be able to switch the current flowing to the heater wire on / off, or control the heat generated by the heater wire by changing the current value. Furthermore, a temperature sensor may be provided in the seat heater. In this case, the temperature sensor becomes an example of the first temperature sensor.

[0456] Furthermore, in the vehicle seat air conditioning devices described in embodiments 1 to 6 above, at least one of the first air intake and the second air intake may be formed on the seat back. Additionally, the second air intake may be configured to face an HVAC (Heating Ventilation and Air Conditioning) outlet (e.g., a duct within the center console).

[0457] Furthermore, in the vehicle seat air conditioning units described in embodiments 1 to 6 above, the vehicle seat air conditioning unit may also have the function of adjusting the air volume of the blower. In this case, it is also possible that when cooling, if the air volume of the blower is set to "strong", the control unit corrects the target exhaust temperature to a low temperature, and if the air volume of the blower is set to "weak", the control unit corrects the target exhaust temperature to a high temperature.

[0458] Furthermore, in the vehicle seat air conditioning units described in embodiments 1 to 6 above, an air conditioning unit such as an air conditioner capable of performing heating and cooling may also be installed. Additionally, the vehicle seat air conditioning unit may directly draw in conditioned air blown out by the vehicle air conditioning unit.

[0459] Furthermore, in the vehicle seat air conditioning devices described in embodiments 1 to 6 above, a seat heater may be included in the seat. The seat heater is installed in at least one of the seat portion and the seat back of a vehicle or similar seat, and heats the area by generating heat, thereby warming the back, waist, buttocks, and thighs. The seat heater heats the seat according to a heating setting and does not heat the seat according to a non-heating setting. The seat heater may also be disposed between a first seat cushion and a first seat cover, or between a second seat cushion and a second seat cover. The seat heater may also have a substrate and a heater wire. The substrate may be a sheet-like nonwoven fabric, a cloth-like polyurethane foam, or the like, formed from a material with elasticity, softness, and extensibility. The heater wire may be a conductive wire electrically connected to a control unit for controlling the power supplied to the heater wire, and heated by power from a power source controlled by the control unit. Alternatively, the control unit may be able to switch the current flowing to the heater wire on / off, or control the heat generated by the heater wire by changing the current value.

[0460] Furthermore, in the vehicle seat air conditioning devices according to embodiments 1 to 6 described above, the air intake in the driver's seat is located on the passenger side of the driver's seat, but it may also be located on the side of the driver's seat opposite to the passenger side. Additionally, in the passenger seat, the air intake is located on the driver's side of the passenger seat, but it may also be located on the side of the passenger seat opposite to the driver's side.

[0461] Furthermore, the vehicle seat air conditioning unit 3 according to each of the above embodiments 2 may also be equipped with a device that is compatible with... Figure 7 Control unit 60 electrical connection Figure 25 The outlet temperature sensor 50. That is, the one involved in Embodiment 2. Figure 7 The vehicle seat air conditioning unit 3 is configured with the same structure as the vehicle seat air conditioning unit 3d in Embodiment 6. Furthermore, in Figure 8 In the flowchart, an additional step can also be added after step S27. Figure 26 Steps S61 and S62. In this case, the vehicle seat air conditioning unit can also make more precise adjustments to the temperature and airflow. As a result, a more comfortable air-conditioned environment can be provided. In this case, it also achieves the same effect as the vehicle seat air conditioning unit 3d in embodiment 6.

[0462] Furthermore, the vehicle seat air conditioning unit 3 according to each of the above embodiments 3 may also be provided with a similar... Figure 10 Control unit 60 electrical connection Figure 25 The outlet temperature sensor 50. That is, the one described in Embodiment 3 can also be used. Figure 10The vehicle seat air conditioning unit 3 is configured with the same structure as the vehicle seat air conditioning unit 3d in Embodiment 6. Furthermore, in Figure 11 In the flowchart, an additional step can also be added after step S34. Figure 26 Steps S61 and S62. In this case, the vehicle seat air conditioning unit can also make more precise adjustments to the temperature and airflow. As a result, a more comfortable air-conditioned environment can be provided. In this case, it also achieves the same effect as the vehicle seat air conditioning unit in Embodiment 5.

[0463] Furthermore, the processing units included in the vehicle seat air conditioning devices according to embodiments 1 to 6 described above are typically implemented as LSIs (Liquid Crystal Sensors) of integrated circuits. They can be formed as a single chip independently of each other, or they can be formed as a single chip including some or all of each other.

[0464] Furthermore, integrated circuitry is not limited to LSIs; it can also be implemented using dedicated circuits or general-purpose processors. FPGAs (Field Programmable Gate Arrays) that can be programmed after LSI fabrication, or reconfigurable processors that can reconfigure the connections and settings of the circuitry within the LSI, can also be used.

[0465] Furthermore, in each of the above embodiments 1 to 6, each component may be constructed by dedicated hardware or implemented by executing a software program suitable for each component. Each component may also be implemented by reading and executing a software program recorded in a recording medium such as a hard disk or semiconductor memory by a program execution unit such as a CPU or processor.

[0466] Furthermore, the figures used above are illustrative for the purpose of specifically illustrating this disclosure, and the embodiments 1 to 6 of this disclosure are not limited by the illustrative figures.

[0467] Furthermore, the division of functional blocks in the block diagram is one example. Multiple functional blocks can also be implemented as a single functional block, or a single functional block can be divided into multiple functional blocks, or some functions can be moved to other functional blocks. Additionally, the functions of multiple functional blocks with similar capabilities can be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

[0468] Furthermore, the order of the steps in the execution flowchart is an illustrative order for the purpose of specifically illustrating this disclosure, and therefore may be in any order other than that described above. Additionally, some of the steps described above may be executed simultaneously (in parallel) with other steps.

[0469] In addition, this disclosure also includes various modifications of embodiments 1 to 6 that can be conceived by those skilled in the art, and methods of implementation by arbitrarily combining the constituent elements and functions of embodiments 1 to 6 without departing from the spirit of this disclosure.

[0470] Industrial availability

[0471] This disclosure can be applied to, for example, seats, sofas, etc., for mobile bodies such as vehicles.

[0472] Explanation of reference numerals in the attached figures

[0473] 1: Seats (driver's seat, front passenger seat); 2a: Center console; 3, 3a, 3b, 3c, 3d: Vehicle seat air conditioning unit; 11c: Seat surface; 13: Seat back; 11c1: Central section; 11c2: Outer edge; 13a1: Side section; 13a2: Surface section; 13a3: Backrest section; 13b: Second seat cover; 13c: Seat frame; 31: First ventilation path; 31a: First air intake; 32, 13 1, 132, 532: Second ventilation path; 32a, 132a, 532a: Second air inlet; 33: Third ventilation path; 33a: Exhaust outlet; 33b: Blade; 34: Blower; 35: Ventilation path selection and switching unit; 39: Three-dimensional structure; 50: Exhaust outlet temperature sensor; 51: First temperature sensor; 52: Second temperature sensor; 60: Control unit; 100: Vehicle; E1: Front end; E2: Rear side.

Claims

1. A vehicle seat air conditioning unit, used in a vehicle seat, comprising: Blower; Ventilation path selection and switching unit; The control unit controls the ventilation path selection and switching unit; A first ventilation path is provided, which guides air drawn in from the first air inlet by the blower to the ventilation path selection and switching unit, wherein... The first air inlet is located on the side of the seat where the person sits, i.e., the seat surface; A second ventilation path is provided for guiding air drawn in from the second air inlet by the blower to the ventilation path selection and switching unit, wherein the second air inlet is a different air inlet from the first air inlet and is located on a part of the seat other than the seat surface; and A third ventilation path is used to guide air from at least one of the first and second ventilation paths via the blower from the ventilation path selection and switching unit to the exhaust port provided on the seat. The first air intake opens towards the interior of the vehicle. The first air inlet and the second air inlet are positioned vertically below the outlet. At least the first air inlet, the second air inlet, and the exhaust outlet are disposed on the seat, and the first ventilation path, a portion of the second ventilation path, the ventilation path selection and switching unit, the blower, and the third ventilation path are built into the seat. The ventilation path selection and switching unit has a first mode that connects the first ventilation path to the third ventilation path, a second mode that connects the second ventilation path to the third ventilation path, and a third mode that connects the first ventilation path and the second ventilation path to the third ventilation path, so as to guide air into the third ventilation path. The control unit switches the mode of the ventilation path selection switching unit by selecting any one of the first mode, the second mode, and the third mode. The vehicle seat air conditioning unit also features: A first temperature sensor detects the temperature inside the vehicle's interior; and A second temperature sensor detects the surface temperature of the person sitting in the seat. The control unit switches the mode of the ventilation path selection switching unit based on information indicating a first temperature detected by the first temperature sensor and information indicating a second temperature detected by the second temperature sensor. When the first temperature detected by the first temperature sensor is above the set cabin temperature and the second temperature detected by the second temperature sensor is above the first surface temperature, the control unit causes the ventilation path selection switching unit to execute the second mode.

2. The vehicle seat air conditioning device according to claim 1, wherein, The control unit acquires information representing the temperature inside the vehicle interior detected by the first temperature sensor and information representing a preset target temperature. The control unit calculates the target exhaust temperature based on the difference between the temperature inside the vehicle and the target temperature represented by the information. The control unit switches the mode of the ventilation path selection switching unit according to the calculated target discharge temperature.

3. The vehicle seat air conditioning device according to claim 1, wherein, The control unit switches the mode of the ventilation path selection switching unit based on a table showing the correlation between the temperature inside the vehicle and the elapsed time of continuous exhaust of conditioned air from the vehicle air conditioning unit installed in the vehicle.

4. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, The seat has a seat back. The outlet is formed on the seat back.

5. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, The first air inlet is formed at the center and outer edge of the seat surface.

6. The vehicle seat air conditioning device according to claim 5, wherein, The outer edge is at least one of the rear side and the front end of the seat surface.

7. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, The outlet is positioned corresponding to at least one of the following body parts: head, neck, acromion, back, and waist.

8. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, It also includes blades disposed at the outlet for guiding the air blown out of the outlet in a predetermined direction.

9. The vehicle seat air conditioning device according to claim 8, wherein, The blade is positioned vertically above the center in the height direction of the outlet.

10. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, It also includes an outlet temperature sensor, which is electrically connected to the control unit and is located near the outlet. The control unit controls the blower based on the temperature detected by the outlet temperature sensor.

11. The vehicle seat air conditioning device according to claim 10, wherein, If the temperature detected by the outlet temperature sensor is above the threshold, the control unit sets the air volume of the blower to the first air volume. If the temperature detected by the outlet temperature sensor is lower than the threshold, the control unit sets the air volume of the blower to a second air volume, wherein the second air volume is a smaller air volume than the first air volume.

12. The vehicle seat air conditioning device according to claim 10, wherein, When the mode of the ventilation path selection switching unit is maintained for a first predetermined period, the control unit controls the blower based on the temperature detected by the outlet temperature sensor.

13. The vehicle seat air conditioning device according to any one of claims 1 to 3, wherein, It also has a three-dimensional structure configured in at least one of the first ventilation path, the second ventilation path, and the third ventilation path.

14. The vehicle seat air conditioning device according to claim 1, wherein, When the ventilation path selection switching unit is in a mode other than the second mode and the temperature change detected by the first temperature sensor and the second temperature sensor is within the specified temperature range throughout the second specified period, the control unit temporarily switches the ventilation path selection switching unit to the second mode.

15. A vehicle seat air conditioning unit, used in a vehicle seat, comprising: Blower; Ventilation path selection and switching unit; The control unit controls the ventilation path selection and switching unit; A first ventilation path is provided, which guides air drawn in from the first air inlet by the blower to the ventilation path selection and switching unit, wherein... The first air inlet is located on the side of the seat where the person sits, i.e., the seat surface; A second ventilation path is provided for guiding air drawn in from the second air inlet by the blower to the ventilation path selection and switching unit, wherein the second air inlet is a different air inlet from the first air inlet and is located on a part of the seat other than the seat surface; and A third ventilation path is used to guide air from at least one of the first and second ventilation paths via the blower from the ventilation path selection and switching unit to the exhaust port provided on the seat. The first air intake opens towards the interior of the vehicle. The first air inlet and the second air inlet are positioned vertically below the outlet. At least the first air inlet, the second air inlet, and the exhaust outlet are disposed on the seat, and the first ventilation path, a portion of the second ventilation path, the ventilation path selection and switching unit, the blower, and the third ventilation path are built into the seat. The ventilation path selection and switching unit has a first mode that connects the first ventilation path to the third ventilation path, a second mode that connects the second ventilation path to the third ventilation path, and a third mode that connects the first ventilation path and the second ventilation path to the third ventilation path, so as to guide air into the third ventilation path. The control unit switches the mode of the ventilation path selection switching unit by selecting any one of the first mode, the second mode, and the third mode. The vehicle seat air conditioning unit also features: A first temperature sensor detects the temperature inside the vehicle's interior; and A second temperature sensor detects the surface temperature of the person sitting in the seat. The control unit switches the mode of the ventilation path selection switching unit based on information indicating a first temperature detected by the first temperature sensor and information indicating a second temperature detected by the second temperature sensor. When the first temperature detected by the first temperature sensor is above the set cabin temperature, and the second temperature detected by the second temperature sensor is below the first surface temperature but above the second surface temperature, the control unit causes the ventilation path selection switching unit to execute the third mode, wherein the second surface temperature is a temperature lower than the first surface temperature.

16. A vehicle seat air conditioning unit, used in a vehicle seat, comprising: Blower; Ventilation path selection and switching unit; The control unit controls the ventilation path selection and switching unit; A first ventilation path is provided, which guides air drawn in from the first air inlet by the blower to the ventilation path selection and switching unit, wherein... The first air inlet is located on the side of the seat where the person sits, i.e., the seat surface; A second ventilation path is provided for guiding air drawn in from the second air inlet by the blower to the ventilation path selection and switching unit, wherein the second air inlet is a different air inlet from the first air inlet and is located on a part of the seat other than the seat surface; and A third ventilation path is used to guide air from at least one of the first and second ventilation paths via the blower from the ventilation path selection and switching unit to the exhaust port provided on the seat. The first air intake opens towards the interior of the vehicle. The first air inlet and the second air inlet are positioned vertically below the outlet. At least the first air inlet, the second air inlet, and the exhaust outlet are disposed on the seat, and the first ventilation path, a portion of the second ventilation path, the ventilation path selection and switching unit, the blower, and the third ventilation path are built into the seat. The ventilation path selection and switching unit has a first mode that connects the first ventilation path to the third ventilation path, a second mode that connects the second ventilation path to the third ventilation path, and a third mode that connects the first ventilation path and the second ventilation path to the third ventilation path, so as to guide air into the third ventilation path. The control unit switches the mode of the ventilation path selection switching unit by selecting any one of the first mode, the second mode, and the third mode. The vehicle seat air conditioning unit also features: A first temperature sensor detects the temperature inside the vehicle's interior; and A second temperature sensor detects the surface temperature of the person sitting in the seat. The control unit switches the mode of the ventilation path selection switching unit based on information indicating a first temperature detected by the first temperature sensor and information indicating a second temperature detected by the second temperature sensor. When the first temperature detected by the first temperature sensor is lower than the set cabin temperature, and the second temperature detected by the second temperature sensor is lower than the second surface temperature but higher than the third surface temperature, the control unit causes the ventilation path selection switching unit to execute the first mode, wherein the third surface temperature is a temperature lower than the second surface temperature.

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