JP2019107983A - Ventilation device of vehicle - Google Patents

Abstract

To provide a ventilation device of a vehicle which can exhaust air within a cabin at an optimal time.SOLUTION: The ventilation device comprises: an exhaust duct which is installed on a vehicle and includes a communication port which comes into communication with a cabin and outside of the vehicle; an opening/closing part which opens/closes the communication port of the exhaust duct; an automatic operation travel control selection part which actuates an automatic operation travel control part which performs travel of the vehicle independent on operation of a driver; and a control part which controls the opening/closing part. The control part closes the communication port of the exhaust duct by the opening/closing part (S16) when the automatic operation travel control part operates by the automatic operation travel control selection part (S10).SELECTED DRAWING: Figure 4

Description

  The present invention relates to a ventilating apparatus for a vehicle, and more particularly to a technology for optimizing the timing of exhausting air in a vehicle compartment.

For example, in a passenger car, a rear ventilation duct is provided to suppress an increase in air pressure in the passenger compartment, and the humidity of the passenger compartment is increased by water vapor emitted from the occupant to suppress fogging of the window. Air is blown into the vehicle compartment from the outside of the vehicle, and the humid air present in the vehicle compartment is discharged from the rear ventilation duct to the outside of the vehicle.
In addition, the rear ventilation duct can also suppress that the air pressure in the vehicle room is increased and the door is difficult to close when the vehicle is closed when the passenger gets on / off the vehicle (Patent Document 1).

JP, 2010-95170, A

  By the way, discharging the air present in the vehicle compartment to the outside of the vehicle as described above means discharging the air even if the air conditioner adjusts the temperature of the air inside the vehicle compartment, for example. There is a problem that the efficiency of adjusting the vehicle becomes worse, and the air pressure inside the vehicle room is lowered due to the reduction of the air pressure outside the vehicle as when the vehicle climbs a mountain road, giving a passenger an unpleasant feeling.

However, in the technology disclosed in Patent Document 1, no consideration is given to the inefficiency in adjusting the temperature of the air in the passenger compartment and the decrease in air pressure in the passenger compartment. There was room for improvement.
The present invention has been made in view of such problems, and an object of the present invention is to provide a vehicle ventilating apparatus capable of discharging air in a vehicle compartment at an optimal time.

  In order to achieve the above object, the vehicle ventilating apparatus of the present invention is mounted on a vehicle and has an exhaust duct having a communication port for communicating the vehicle interior with the vehicle exterior, and an opening and closing for opening and closing the communication port of the exhaust duct. And an automatic driving travel control selection unit for operating the automatic driving travel control unit for performing the traveling of the vehicle without depending on the operation of the driver, and a control unit for controlling the open / close unit, the control unit When the automatic driving travel control unit is operated by the automatic driving travel control selection unit, the communication port of the exhaust duct is closed by the opening / closing unit.

Thereby, the window glass becomes cloudy by closing the communication port of the exhaust duct by the opening / closing unit only when there is no hindrance to traveling even when the window glass becomes cloudy as when the vehicle travels by the automatic driving travel control unit. It is possible to suppress the discharge of air from the vehicle interior to the outside of the vehicle by prioritizing the vehicle.
As another aspect, it is preferable that the opening and closing portion be a flat plate member that is rotatably attached to the exhaust duct and that opens and closes the communication port by rotating.

In this manner, the opening and closing portion is rotated to open and close the communication port, which makes it possible to open and close the communication port with a simple configuration.
As another aspect, the control device may include a barometric pressure reduction degree estimating unit for estimating the degree of reduction of the barometric pressure in the vehicle compartment, and the control unit may set the degree of reduction of the barometric pressure in the vehicle compartment estimated by the barometric pressure reduction degree estimating unit. If less than the degree, it is preferable to open the communication port of the exhaust duct regardless of the operation of the automatic driving travel control unit.

Thereby, when the reduction degree of the air pressure in the vehicle compartment estimated by the air pressure reduction degree estimation unit is less than the set degree, the communication port of the exhaust duct is opened even when the automatic driving travel control unit is operating. It is possible to ventilate the air in the passenger compartment by opening the communication port of the exhaust duct.
As another aspect, the vehicle cabin includes a blower for blowing air from the outside of the vehicle, and the control unit is configured to open or close the automatic drive travel control unit when the automatic drive travel control unit is operated by the automatic drive travel control selection unit. Closes the communication port of the exhaust duct, and when the reduction degree of the air pressure in the vehicle compartment estimated by the air pressure reduction degree estimation unit is equal to or greater than a set degree, the air blowing device It is preferable to blow air.

As a result, when the degree of decrease in air pressure in the vehicle room increases, air is blown into the vehicle room from the outside of the vehicle, so it is possible to increase the air pressure in the vehicle room.
As another aspect, the air pressure estimation unit is an altitude detection unit that detects the altitude of the vehicle, and the air pressure reduction degree estimated by the air pressure reduction degree estimation unit is detected by the altitude detection unit. Preferably, as the altitude of the said vehicle being raised rises.

As a result, it is possible to estimate that the air pressure in the vehicle room decreases as the altitude of the vehicle detected by the height detection unit rises, and by keeping the communication port of the exhaust duct closed, the air pressure in the vehicle room can be kept constant. It is assumed.
As another aspect, the air pressure reduction degree estimation unit is an air pressure detection unit that detects the air pressure outside the vehicle, and the air pressure reduction degree estimated by the air pressure reduction degree estimation unit is detected by the air pressure detection unit. Preferably, the pressure increases as the pressure outside the vehicle decreases.

As a result, it is possible to estimate that the air pressure inside the vehicle room decreases as the air pressure outside the vehicle detected by the air pressure detection unit decreases, and by keeping the communication port of the exhaust duct closed, the air pressure inside the vehicle room can be kept constant. It is assumed.
As another aspect, the control unit adjusts the closing degree of the communication port of the exhaust duct by the opening / closing unit in accordance with the reduction degree of the air pressure in the vehicle compartment estimated by the air pressure reduction degree estimating unit. preferable.

  Thus, by adjusting the closing degree of the communication port of the exhaust duct in accordance with the decreasing degree of the air pressure in the vehicle compartment, it is possible to adjust the air pressure in the vehicle interior.

According to the vehicle ventilating apparatus of the present invention, the communication port of the exhaust duct is closed by the open / close unit only when there is no problem in traveling even when the window glass becomes cloudy as when the vehicle travels by the automatic driving travel control unit Therefore, it is possible to suppress the discharge of air from the vehicle interior to the outside of the vehicle prior to suppressing the fogging of the window glass.
Thereby, the air in the passenger compartment can be discharged as needed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the vehicle by which the ventilator of the vehicle concerning 1st Embodiment was mounted. It is a perspective view of a rear ventilation duct. It is a block diagram showing the connection composition of ECU concerning control of the rear ventilation duct in a 1st embodiment. It is the flowchart in which the routine which shows the control procedure of the rear ventilation duct which concerns on a 1st embodiment which ECU performs is shown. It is a block diagram showing the connection composition of ECU concerning control of the rear ventilation duct in a 2nd embodiment. It is the flowchart in which the routine which shows the control procedure of the rear ventilation duct which concerns on a 2nd embodiment which ECU performs is shown. It is a block diagram showing the connection composition of ECU concerning control of the rear ventilation duct in another example of a 2nd embodiment. It is the flowchart in which the routine which shows the control procedure of the rear ventilation duct concerning the example of a 2nd embodiment which ECU performs is shown.

Hereinafter, an embodiment of the present invention will be described based on the drawings.
First Embodiment
Referring to FIG. 1, a schematic configuration view of a vehicle 1 equipped with a vehicle ventilating apparatus according to the first embodiment is shown.
The vehicle 1 is provided with a door 5, an air conditioner unit 10, a rear ventilation duct 40, and an ECU 50. The vehicle 1 controls the rear ventilation duct 40 by the ECU 50 to suppress an increase in the humidity of the vehicle interior 3 accompanying the opening and closing of the door 5, and the air supplied from the air conditioning unit 10 to the vehicle interior 3 It is possible to adjust the emissions.

  The air conditioner unit 10 includes an in-vehicle intake duct 12, an out-of-vehicle intake duct 14, an intake switching valve 16, an air filter 20, a heat exchanger 30, and a fan 32. The air conditioner unit 10 sucks air from the in-vehicle intake duct 12 or the out-of-vehicle intake duct 14 by operating the fan 32, cleans the air with the air filter 20, adjusts the temperature of the air with the heat exchanger 30, and Air can be sent into the room 3.

  The in-vehicle intake duct 12 is a duct whose one end communicates with the passenger compartment 3. The outside air intake duct 14 is a duct whose one end communicates with the outside of the vehicle 1. The other end of each of the in-vehicle intake duct 12 and the out-of-vehicle intake duct 14 is connected to the intake switching valve 16. The intake switching valve 16 is a valve that closes one of the in-vehicle intake duct 12 and the out-of-vehicle intake duct 14 and opens the other. The intake air switching valve 16 discharges the air taken in from the in-vehicle intake duct 12 or the out-vehicle intake duct 14 to the air filter 20.

The air filter 20 collects dust and dirt contained in the air from the air taken in from the intake air switching valve 16 and discharges it to the heat exchanger 30.
The heat exchanger 30 can cool the air by heat exchange between the refrigerant and the air cooled by an evaporator (not shown). Moreover, the heat exchanger 30 can warm air using exhaust heat of an engine (not shown). That is, the heat exchanger 30 can adjust the temperature of the air drawn from the air filter 20 and discharge it to the fan 32. The fan 32 can operate to circulate air from the heat exchanger 30 to the passenger compartment 3.

  To increase the amount of air sent into the vehicle compartment 3 is to increase the amount of wind applied to the window glass (not shown) and to efficiently ventilate the vehicle compartment 3, thereby suppressing the fogging of the window glass. Is possible. In particular, blowing the air taken in from the outside air intake duct 14 into the vehicle interior 3 by the air intake switching valve 16 exchanges the high humidity air remaining in the vehicle interior 3 with the air outside the vehicle 1 (hereinafter referred to as the outside of the vehicle). It is possible to suppress the fogging of the window glass better.

The vehicle interior 3 is provided with a humidity sensor 60 which is a sensor for measuring the humidity of the vehicle interior 3.
A rear ventilation duct 40 is provided at the rear of the vehicle 1.
Referring to FIG. 2, a perspective view of the rear ventilation duct 40 is shown.
The rear ventilation duct 40 is constituted by a duct member (exhaust duct) 42 and a flap (opening and closing portion) 46.

The duct member 42 is, for example, a resin member in which three communication ports 44 are formed. The duct member 42 is provided across the vehicle interior 3 and the vehicle exterior. Thus, the duct member 42 can discharge air from the vehicle interior 3 to the outside of the vehicle.
The flaps 46 are flat plate members, and three ends of the flaps 46 are rotatably attached to the duct member 42. A motor 48 is attached to one end of the flap 46, for example, and can be rotated by the motor 48 to close or open the communication port 44.

That is, the rear ventilation duct 40 suppresses or allows the air in the passenger compartment 3 to be discharged outside the vehicle by rotating the flap 46 by the motor 48 to close or open the communication port 44. Can be
Referring to FIG. 3, the connection configuration of the ECU 50 related to the control of the rear ventilation duct 40 in the first embodiment is shown in a block diagram. The ECU 50 (control unit) is a control device for performing comprehensive control including operation control of an engine (not shown), and includes an input / output device, a storage device (ROM, RAM, non-volatile RAM, etc.), a central processing unit ( CPU) etc. are comprised. In particular, the ECU 50 is provided with an automatic driving travel control unit 52.

  The automatic driving travel control unit 52 detects an obstacle such as a vehicle or a pedestrian traveling in the vicinity of the vehicle 1 from, for example, a camera or a millimeter wave radar (not shown) and controls an engine, a brake device, a steering device, etc. An automatic driving travel control program is stored that performs acceleration, deceleration, and steering according to 1 without depending on the driver's operation. The automatic driving travel control unit 52 operates when the passenger turns on an automatic driving switching switch (automatic driving travel control selection unit) 68 provided in the vehicle interior 3.

A humidity sensor 60 and an automatic operation changeover switch (automatic operation travel control selection unit) 68 are electrically connected to the input side of the ECU 50, and the humidity sensor 60 detects the humidity of the vehicle interior 3 and the automatic operation is performed. From the changeover switch 68, ON operation information of automatic driving travel control by the occupant is input.
Further, the motor 48 of the rear ventilation duct 40 is electrically connected to the output side of the ECU 50, and the motor 48 is controlled to rotate the flap 46 to open and close the communication port 44, thereby the vehicle interior 3 air can be prevented or allowed to be discharged outside the vehicle.

Referring to FIG. 4, a routine executed by the ECU 50 and showing a control procedure of the rear ventilation duct 40 according to the first embodiment is shown in a flowchart, which will be described below along the flowchart.
In step S10, it is judged by the automatic driving changeover switch 68 whether or not the occupant has turned on the automatic driving travel control. If it is determined that the determination result in step S10 is true (Yes) and the automatic driving travel control is turned on, the process proceeds to step S16, the communication port 44 of the duct member 42 is closed, and the present routine is ended. If it is determined that the determination result in step S10 is false (No) and the automatic driving travel control has been turned off, the process proceeds to step S12.

  In step S12, it is determined whether the humidity of the vehicle interior 3 detected by the humidity sensor 60 is higher than a predetermined value. If the determination result of step S12 is false (No) and it is determined that the humidity of the vehicle interior 3 is equal to or less than the predetermined value, the process proceeds to step S16, the communication port 44 of the duct member 42 is closed, and the present routine is ended. If the determination result in step S12 is true (Yes) and it is determined that the humidity of the vehicle interior 3 is higher than the predetermined value, the process proceeds to step S14, the communication port 44 of the duct member 42 is opened, and the present routine is ended.

  That is, in steps S10 and S12, when the occupant turns on the automatic drive travel control (step S10), the automatic drive travel control is off (step S10), and the humidity of the vehicle interior 3 is higher than the predetermined value. (Step S12) Similarly, automatic drive travel control is turned off (step S10), and three cases where the humidity of the vehicle interior 3 is less than a predetermined value (step S12) are determined.

  When the driver turns off the automatic driving control and the humidity of the vehicle interior 3 is less than a predetermined value, the communication port 44 of the duct member 42 is closed by the flap 46 (step S16), and the humidity of the vehicle interior 3 is predetermined. When it is higher than the value, the communication port 44 of the duct member 42 is opened (step S14), and for example, if a predetermined value is a dew point calculated from the temperature of the vehicle interior 3 detected by a thermometer not shown The humidity of the room 3 can be reduced to the dew point or less. As a result, air can be blown into the passenger compartment 3 to suppress fogging of the window glass.

  Further, when the occupant turns on the automatic driving travel control, the communication port 44 of the duct member 42 is closed by the flap 46 (step S16). When the passenger turns on the automatic driving travel control, the travel of the vehicle 1 does not depend on the operation of the driver, and therefore, it is not necessary to suppress the fogging of the window glass. That is, for example, the temperature of the vehicle interior 3 can be kept constant without discharging the air of the vehicle interior 3 warmed and blown by the heat exchanger 30 to the outside of the vehicle.

  As described above, the vehicle ventilating apparatus according to the first embodiment is mounted on the vehicle 1 and opens / closes the communication port 44 and the duct member 42 having the communication port 44 for communicating the vehicle interior 3 with the outside of the vehicle. The ECU 50 is provided with a flap 46, an automatic driving changeover switch 68 for operating the automatic driving traveling control unit 52 that performs traveling of the vehicle 1 without depending on the driver's operation, and an ECU 50 for controlling the flap 46. When the automatic driving travel control unit 52 is operated by the changeover switch 68, the communication port 44 of the duct member 42 is closed by the flap 46.

Therefore, the window 46 closes the communication port 44 of the duct member 42 by the flap 46 only when there is no hindrance to traveling even when the window glass becomes cloudy as when the vehicle 1 travels by the automatic driving travel control unit 52. It is possible to suppress air being discharged from the vehicle interior 3 out of the vehicle interior 3 prior to suppressing clouding.
The flap 46 is rotatably attached to the duct member 42, and is a flat plate member that opens and closes the communication port 44 by being rotated by the motor 48, for example.

Therefore, since the communication port 44 is opened and closed by pivoting the flap 46, the communication port 44 can be opened and closed with a simple configuration.
Second Embodiment
Hereinafter, the second embodiment will be described based on FIGS. 5 and 6.
The description of the configuration common to the first embodiment will be omitted, and only the portions different from the first embodiment will be described here.

Referring to FIG. 5, a connection configuration of an ECU (control unit) 150 related to control of the rear ventilation duct 40 in the second embodiment is shown in a block diagram.
The difference between the second embodiment and the first embodiment is that an altimeter (altitude detection unit, atmospheric pressure reduction degree estimation unit) 164 is electrically connected to the input side of the ECU 150. Further, an air conditioner unit (air blower) 10 is electrically connected to the output side of the ECU 150.

The altimeter 164 is an instrument capable of sequentially measuring the altitude of the vehicle 1 using, for example, a GPS (Global Positioning System).
The ECU 150 is provided with a storage unit 154. The storage unit 154 can sequentially store the altitude of the vehicle 1 detected by the altimeter 164.
Referring to FIG. 6, a flowchart illustrating a control procedure of the rear ventilation duct 40 according to the second embodiment, which is executed by the ECU 150, is shown in the flowchart, and will be described below along the flowchart.

The difference between the second embodiment and the first embodiment is that when it is determined that the determination result in step S10 is true (Yes) and the automatic driving travel control is turned on, the process proceeds to step S110 to step S116. .
In step S110, the altitude (initial altitude) of the vehicle 1 when the occupant turns on the automatic drive travel control is detected by the altimeter 164, stored in the storage unit 154 of the ECU 150, and the process proceeds to step S112.

  In step S112, for example, a value obtained by subtracting the initial altitude from the current altitude (current altitude) of the vehicle 1 detected by the altimeter 164 (the estimated degree of decrease in air pressure in the vehicle compartment) is less than a set value (set degree) Determine if If it is determined that the determination result in step S112 is true (Yes) and the value obtained by subtracting the initial altitude from the current altitude is less than the set value, the process proceeds to step S12. If the determination result in step S112 is false (No) and it is determined that the value obtained by subtracting the initial altitude from the current altitude is equal to or greater than the set value, the process proceeds to step S114.

In step S114, while the in-vehicle intake duct 12 is closed by the intake switching valve 16 of the air conditioner unit 10, the out-of-vehicle intake duct 14 is opened, and the air taken in from the out-vehicle intake duct 14 is blown into the vehicle interior 3 by operating the fan 32. Then, the process proceeds to step S116.
In step S116, the communication port 44 of the duct member 42 is adjusted and closed to end the present routine. The adjustment closing is, for example, control for rotating the flap 46 as the value obtained by subtracting the initial height from the current height becomes larger than the set value to reduce the opening degree of the communication port 44. As a result, by decreasing the degree of opening of the communication port 44 as the current height of the vehicle 1 rises, it is possible to gradually suppress the air in the vehicle interior 3 from going out of the vehicle.

  That is, in step S110 to step S116, the storage unit 154 stores the initial height when the occupant turns on the automatic drive travel control (step S110), and the vehicle 1 climbs the mountain path thereafter to increase the height. When the value obtained by subtracting the initial altitude from the current altitude exceeds the set value (step S112), air can be taken into the vehicle interior 3 from outside the vehicle by the air conditioner unit 10 (step S114) to increase the air pressure in the vehicle interior 3.

In particular, the air pressure in the passenger compartment 3 can be adjusted by decreasing the degree of opening of the communication port 44 as the current height of the vehicle 1 rises.
As a result, it is possible to increase the air pressure in the vehicle interior 3 when there is a high possibility that the occupant feels discomfort due to the air pressure difference as when the vehicle 1 climbs a mountain road.
When the value obtained by subtracting the initial altitude from the current altitude of the vehicle 1 detected by the altimeter 164 is less than the set value (step S110), for example, the vehicle 1 is traveling on a road along the sea, In the case where there is no possibility that the atmospheric pressure will decrease, the process proceeds to step S12, and the same control as in the case where the automatic driving travel control in the first embodiment is OFF is performed.

As a result, even when automatic driving travel control is performed, it is possible to prevent the window glass from being fogged without lowering the air pressure in the vehicle interior 3.
Referring to FIG. 7, a connection configuration of an ECU (control unit) 150 related to control of the rear ventilation duct 40 in another example of the second embodiment is shown in a block diagram. Further, referring to FIG. 8, a flow chart shows a routine executed by the ECU 150, which shows a control procedure of the rear ventilation duct 40 according to another example of the second embodiment. Hereinafter, another example of the second embodiment will be described with reference to FIGS. 7 and 8.

In another example of the second embodiment, a vehicle outside pressure sensor (a pressure detection unit, a pressure decrease degree estimation unit) 262 is electrically connected to the input side of the ECU 150 instead of the altimeter 164.
Further, in another example of the second embodiment, the initial height and the current height in step S110 and step S112 are replaced with the initial pressure and the current pressure.
That is, in step S210 and step S212, the initial atmospheric pressure when the occupant turns on the automatic driving travel control is stored by the storage unit 154 (step S210), and then the atmospheric pressure is lowered by, for example, the vehicle 1 climbing a mountain path. When the value obtained by subtracting the current air pressure from the initial air pressure exceeds the specified value (setting degree) (step S212), air is taken into the vehicle compartment 3 from outside the vehicle by the air conditioner unit 10 (step S114). be able to.

Therefore, without using the altimeter 164, the same effect can be obtained by using the outside air pressure sensor 262.
As described above, the ventilator of the vehicle 1 according to the second embodiment has the altimeter 164 and the outside air pressure sensor 262 as an air pressure decrease degree estimation unit for estimating the air pressure decrease degree of the vehicle interior 3, and the ECU 150 When the reduction degree of the air pressure in the vehicle interior 3 estimated by the altimeter 164 or the vehicle outside air pressure sensor 262 is less than the set value, the communication port 44 of the rear ventilation duct 40 is opened regardless of the operation of the automatic driving control unit 52.

Therefore, when the reduction degree of the air pressure in the vehicle compartment 3 estimated by the altimeter 164 or the vehicle outside air pressure sensor 262 is less than the set value, even when the automatic driving travel control unit 52 is operating, Since the communication port 44 is opened, the communication port 44 of the rear ventilation duct 40 can be opened to ventilate the air in the passenger compartment 3.
In particular, it is estimated that the air pressure in the passenger compartment 3 decreases as the altitude of the vehicle 1 detected by the altimeter 164 rises, and the communication port 44 of the rear ventilation duct 40 is closed. You can keep it.

In addition, it is estimated that the air pressure in the vehicle interior 3 decreases as the air pressure outside the vehicle detected by the vehicle outside air pressure sensor 262 decreases, and the air pressure in the vehicle interior 3 is reduced even if the communication port 44 of the rear ventilation duct 40 is closed. It can be kept constant.
The air conditioner unit 10 ventilates air into the passenger compartment 3 from outside the vehicle, and the ECU 150 causes the flap 46 to open the communication port 44 of the duct member 42 when the automatic driving travel control unit 52 is actuated by the automatic driving changeover switch 68. Is closed, and the air conditioning unit 10 blows air from the outside of the vehicle compartment 3 by the air conditioner unit 10 when the reduction degree of the air pressure in the vehicle compartment 3 estimated by the altimeter 164 or the vehicle outside pressure sensor 262 is equal to or higher than the set degree.

Therefore, since the air is blown to the vehicle interior 3 from the outside of the vehicle interior when the degree of decrease in the air pressure in the vehicle interior 3 rises, the pressure in the vehicle interior 3 can be increased.
Then, the ECU 150 adjusts the closing degree of the communication port 44 of the rear ventilation duct 40 by the flap 46 according to the reduction degree of the air pressure in the vehicle compartment 3 estimated by the altimeter 164 and the vehicle outside pressure sensor 262. The barometric pressure of can be adjusted.

This completes the description of the ventilating apparatus for a vehicle according to the present invention, but the present invention is not limited to the above embodiment, and can be changed without departing from the scope of the invention.
For example, the shape and mode of the rear ventilation duct 40 in the present embodiment is an example, as long as the air in the passenger compartment 3 can be controlled and discharged outside the vehicle.
In addition, the automatic driving travel control executed by the automatic driving travel control unit 52 in the present embodiment may be control executed only on a specific road such as a highway, etc., and the automatic driving travel control may be performed regardless of the driver's operation. It should just be possible to carry out.

1 vehicle 3 cabin 10 air conditioner unit (air blower)
42 Duct member (exhaust duct)
44 communication port 46 flap (opening and closing part)
50, 150 ECU (control unit)
52 Automatic driving travel control unit 68 Automatic driving switching switch (automatic driving travel control selection unit)
164 Altimeter (altitude detection unit, pressure drop degree estimation unit)
262 Vehicle outside pressure sensor (pressure detection unit, pressure reduction degree estimation unit)

Claims (7)

An exhaust duct mounted on a vehicle and having a communication port communicating the vehicle interior with the vehicle exterior;
An opening / closing unit for opening / closing the communication port of the exhaust duct;
An automatic driving travel control selection unit that operates an automatic driving travel control unit that drives the vehicle without depending on the driver's operation;
A control unit that controls the opening / closing unit;
The control unit is a vehicle ventilation device that closes the communication port of the exhaust duct by the opening / closing unit when the automatic driving travel control unit is operated by the automatic driving travel control selection unit.   2. The vehicle ventilating apparatus according to claim 1, wherein the opening / closing unit is a flat plate member rotatably attached to the exhaust duct and opening and closing the communication port by turning. 3. A pressure reduction degree estimation unit configured to estimate the reduction degree of the air pressure in the vehicle compartment;
The control unit opens the communication port of the exhaust duct regardless of the operation of the automatic driving travel control unit when the decrease degree of the air pressure in the vehicle compartment estimated by the air pressure decrease degree estimation unit is less than the set degree. The ventilator of the vehicle according to claim 1 or 2. The vehicle includes an air blower for blowing air from the outside of the vehicle,
When the automatic driving travel control unit is operated by the automatic driving travel control selection unit, the control unit closes the communication port of the exhaust duct by the opening / closing unit, and the vehicle estimated by the air pressure reduction degree estimation unit The vehicle ventilating apparatus according to claim 3, wherein the air blowing device blows air into the vehicle compartment from the outside of the vehicle when the degree of decrease in air pressure in the room is equal to or higher than a set degree. The air pressure reduction degree estimation unit is an altitude detection unit that detects the altitude of the vehicle,
The vehicle ventilation according to claim 3 or 4, wherein the decrease degree of the air pressure in the vehicle compartment estimated by the air pressure decrease degree estimation unit rises as the altitude of the vehicle detected by the altitude detection unit rises. apparatus. The air pressure reduction degree estimation unit is an air pressure detection unit that detects the air pressure outside the vehicle,
The vehicle ventilation system according to claim 3 or 4, wherein the decrease degree of the air pressure estimated by the air pressure decrease degree estimation unit increases as the air pressure outside the vehicle detected by the air pressure detection unit decreases.   The control unit adjusts the closing degree of the communication port of the exhaust duct by the opening / closing unit according to the reduction degree of the air pressure in the vehicle compartment estimated by the air pressure reduction degree estimation unit. Vehicle ventilation system according to any one of the preceding claims.

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