JP2007045308A - Ventilation device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation device for a vehicle capable of efficiently discharging the heat stored inside a cabin at parking outside the cabin with simple structure. <P>SOLUTION: When a start of in-cabin ventilation is determined based on preset conditions, an ECU 30 performs control to open a movable roof panel 14 of a sunroof mechanism 10 to a preset opening position, and sets an air introducing mode into the cabin in an outdoor air introducing mode by control of an inside-outside air changeover damper 25 of an air-conditioning unit 20 to drive a blower motor 24. Thus, the heat stored inside the cabin at parking can be efficiently discharged outside the cabin with a simple structure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle ventilator that scavenges hot air trapped inside a vehicle compartment during parking.

As is well known, when a vehicle is parked for a long time under hot weather in the summer, the vehicle interior temperature rises due to the heat trapped in the vehicle interior, causing great discomfort to the passengers at the time of boarding and the efficiency of the cooling system There is a problem such as lowering. Therefore, for example, in Patent Document 1, a light shielding shade is disposed inside the window glass through a space, and the space between the window glass and the light shielding shade is a space sandwiched between the roof outer plate and the ceiling material. There is disclosed a technique for improving the scavenging efficiency of hot air during parking by connecting and forming a ventilation channel and communicating the ventilation channel with an intake port and an exhaust port (ventilation port) of a defroster.
JP 2002-331822 A

  However, as in the technique disclosed in Patent Document 1 described above, providing the light-shielding shade to form the ventilation channel is a factor that causes the structure to be complicated.

  In addition, it is common for the ventilation port to open below the rear of the vehicle body, and the technology for exhausting hot air from the ventilation port opening below the vehicle body in this way sufficiently improves the scavenging efficiency of the hot air. It's hard to say.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle ventilator that can efficiently exhaust the heat trapped in the vehicle interior during parking to the outside of the vehicle with a simple configuration.

  The present invention relates to a sunroof mechanism that opens and closes a roof opening that opens to a roof panel of a vehicle body with a movable roof panel, an air blowing means that can blow outside air into the vehicle interior, and start of vehicle interior ventilation based on preset conditions. And a ventilating determination means for determining whether or not the vehicle interior ventilation is started by the ventilation determining means, and the movable roof panel is controlled to be opened to a preset open position. The sunroof control means for controlling the movable roof panel to close to the fully closed position when it is determined to end, and the air blowing means are driven when the ventilation determination means determines the start of vehicle interior ventilation, and the ventilation determination means And a ventilation control unit that stops the blowing unit when it is determined that the indoor ventilation has ended.

  According to the vehicle ventilation device of the present invention, the heat trapped in the vehicle compartment during parking can be efficiently discharged outside the vehicle with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The drawings relate to an embodiment of the present invention, FIG. 1 is a schematic configuration diagram of a ventilation device mounted on a vehicle, FIG. 2 is a cross-sectional view showing a main part of a sunroof mechanism, and FIG. 3 is a flowchart showing a ventilation control routine.

  In FIG. 1, reference numeral 1 denotes a vehicle such as an automobile. The roof panel 2 of the vehicle 1 has a roof opening 2a, and a sunroof mechanism 10 that opens and closes the roof opening 2a. In addition, an air conditioning unit 20 as a blower is disposed in the instrument panel 3 of the vehicle 1. The vehicle 1 is also equipped with an electronic control unit (ECU) 30 that performs vehicle interior ventilation control during parking using the sunroof mechanism 10 and the air conditioning unit 20.

  As shown in FIG. 2, the sunroof mechanism 10 has a pair of left and right frame parts 11 extending in the longitudinal direction of the vehicle body along the left and right edges of the roof opening 2 a. Each frame portion 11 is provided with a panel slide groove 12 extending in the longitudinal direction of the vehicle body. A movable roof panel 14 that opens and closes the roof opening 2a is supported by the panel slide groove 12 via a connecting member 13. Has been. Further, a motor 15 (see FIG. 1) is connected to the connecting member 13 via a drive mechanism (not shown). The movable roof panel 14 opens and closes the roof opening 2a by transmitting the driving force of the motor 15 to the connecting member 13 through the drive mechanism.

  Here, in the present embodiment, the movable roof panel 14 has an opening / closing operation (so-called tilt-up) by rotation in the vicinity of the front end portion of the panel slide groove 12 according to the driving amount of the motor 15, and the panel slide. An opening / closing operation by sliding in the longitudinal direction of the vehicle body along the groove 12 is performed. The driving amount of the motor 15 is controlled by an ECU 30 described later through the driving circuit 19. That is, the vehicle-mounted battery 5 is connected to the drive circuit 19, and the ECU 30 controls the drive amount of the motor 15 by performing power feeding control from the battery 5 to the motor 15 via the drive circuit 19.

  Each of the left and right frame portions 11 is provided with shade slide grooves 16 extending in the longitudinal direction of the vehicle body. A sunshade 17 for shielding the roof opening 2a is slidably held in the shade slide grooves 16. Has been. The sunshade 17 can be integrated with the movable roof panel 14 when the movable roof panel 14 slides along the panel slide groove 12 to open and close the roof opening 2a. Furthermore, the roof opening 2a can be opened and closed independently of the movable roof panel 14 by the operation of the occupant.

  In addition, a slit-shaped air vent 17 a is opened at an appropriate position of the sunshade 17. The ventilation opening 17a is opened in the sunshade 17 so that the vehicle interior and the exterior communicate with each other when the movable roof panel 14 is in a predetermined open state even when the sunshade 17 is fully closed. It has become.

  In the present embodiment, the solar cell 18 is fixed on the upper surface of the sunshade 17. When the sunshade 17 is in the fully closed position, the solar cell 18 is disposed so that the entire incident surface faces the roof opening 2a, and generates power by sunlight incident through the roof opening 2a. .

  The air conditioning unit 20 includes a blower duct 21 that communicates with the defroster outlet 22a, the vent outlet 22b, and the foot outlet 22c. In the air duct 21, an air outlet switching damper 23 for selecting air flow to the air outlets 22a, 22b, and 22c is disposed. A blower motor 24 for adjusting the amount of blown air is disposed in the blower duct 21. In the air duct 21, an evaporator that cools the air in the air duct 21 by heat exchange and a heater core that heats the air in the air duct 21 are disposed on the downstream side of the blower motor 24 ( Neither is shown). Further, on the upstream side of the blower motor 24, an inside / outside air switching damper 25 that selectively switches between an inside air circulation mode that circulates air in the vehicle interior and an outside air introduction mode that introduces air outside the vehicle is disposed.

  Here, the air conditioning unit 20 is controlled by the ECU 30 through the drive circuit 26 and the power supply switching circuit 27. In other words, the battery 5 or the solar cell 18 can be selectively connected to the drive circuit 26 via the power supply switching circuit 27, and the ECU 30 passes through the power supply switching circuit 27 and the drive circuit 26. The air conditioning unit 20 is controlled by controlling the power supply to the dampers 23 and 25, the blower motor 24 and the like.

  The ECU 30 is composed of a microcomputer or the like to which a CPU, ROM, RAM, I / O interface and the like are connected via a bus. The ECU 30 includes a ventilation switch 31 for turning on and off the ventilation function at the time of parking, a solar radiation sensor 32 as a solar radiation amount detecting means for detecting the amount of solar radiation incident on the vehicle interior through the windshield 4, and raindrops on the windshield 4. A rain sensor 33 as a rain detecting means for detecting a change in the refractive index by detecting a change in refractive index when adhering, a key sensor 34 for detecting that the key is inserted into the ignition key cylinder, and detecting that the door is locked. The door lock sensor 35 and a fully closed switch 36 that is turned on when the sunshade 17 is substantially fully closed are connected.

  Then, based on the input signals from these switches and sensors, the ECU 30 determines the start and end of vehicle interior ventilation based on preset conditions.

  When the start of the vehicle interior ventilation is determined, the ECU 30 controls the opening of the movable roof panel 14 to a preset open position. Here, the open position of the movable roof panel 14 is preferably set to a position where the roof opening 2a is opened about several centimeters from the viewpoint of crime prevention. Is preferably a position to be tilted up by several centimeters.

  Further, the ECU 30 sets the air introduction mode into the vehicle interior to the outside air introduction mode under the control of the inside / outside air switching damper 25 and then connects the solar cell 18 to the drive circuit 26 through the power supply switching circuit 27 to drive the blower motor 24. To do. Thus, the air conditioning unit 20 introduces (blows) outside air into the vehicle interior using the generated power of the solar battery 18. At this time, the ECU 30 desirably opens the foot outlet 22 c under the control of the outlet switching damper 23.

  On the other hand, when determining the end of the vehicle interior ventilation, the ECU 30 controls the movable roof panel 14 to the fully closed position and stops the blower motor 24.

  That is, in this embodiment, ECU30 has each function as a ventilation determination means, a sunroof control means, and a ventilation control means.

  Next, the ventilation control executed by the ECU 30 will be described according to the flowchart of the ventilation control routine shown in FIG. This routine is executed as a trigger when the ventilation switch 31 is turned on by an occupant. First, in step S101, the ECU 30 removes the key from the ignition key cylinder based on the signal from the key sensor 34. Check whether there is any. If the ECU 30 determines that the key has not yet been removed from the ignition key cylinder, the ECU 30 waits as it is. If it determines that the key has been removed, the ECU 30 proceeds to step S102.

  When the process proceeds from step S101 to step S102, the ECU 30 checks whether the door lock is turned on (locked) based on the signal from the door lock sensor 35. If the ECU 30 determines that the door lock is not yet turned on, the ECU 30 waits as it is. If the ECU 30 determines that the door lock is turned on, the ECU 30 proceeds to step S103.

  When the process proceeds from step S102 to step S103, the ECU 30 checks whether the sunshade 17 is in a substantially fully closed state based on a signal from the fully closed switch 36. If the ECU 30 determines that the sunshade 17 is in a substantially fully closed state, the ECU 30 determines the start of vehicle interior ventilation and proceeds to step S104. That is, if the ECU 30 determines that the vehicle 1 is parked in step S101 and step S102 and determines that a suitable power generation environment of the solar cell 18 is secured in step 103, the vehicle interior ventilation Is determined to proceed to step S104. On the other hand, if it is determined in step S103 that the sunshade 17 is not in a substantially fully closed state (that is, the sunshade 17 is in an open position that is greater than or equal to a predetermined value), the process proceeds to step S109.

  When the process proceeds from step S103 to step 104, the ECU 30 controls the opening of the movable roof panel 14 to a preset open position, and then proceeds to step S105.

  In step S105, the ECU 30 sets the air introduction mode to the vehicle interior to the outside air introduction mode by the control of the inside / outside air switching damper 25, and the air outlet to the vehicle interior by the control of the air outlet switching damper 23. After setting the foot outlet 22c, driving of the blower motor 24 using the solar cell 18 as a power source is started. Thereby, in the vehicle 1, vehicle interior ventilation is realized by scavenging hot air in the vehicle interior from the roof opening 2 a using the outside air blown from the air conditioning unit 20.

  Then, when the process proceeds from step S105 to step S106, the ECU 30 checks whether the amount of solar radiation is equal to or greater than a set value based on the signal from the solar radiation sensor 32. If it is determined in step S106 that the amount of solar radiation is equal to or greater than the set value, the ECU 30 proceeds to step S107.

  When the process proceeds from step S106 to step S107, the ECU 30 checks whether or not rain has been detected based on the signal from the rain sensor 33. If it is determined in step S107 that no rain has been detected, the ECU 30 proceeds to step S108.

  When the process proceeds from step S107 to step S108, the ECU 30 checks whether the door lock is turned off (unlocked) based on the signal from the door lock sensor 35. If it is determined in step S108 that the door lock is not turned off, the process returns to step S106.

  On the other hand, if it is determined in step S106 that the amount of solar radiation is less than or equal to the set value, if rain is detected in step S107, or if it is determined in step S108 that the door lock has been turned off, the ECU 30 performs vehicle interior ventilation. The process proceeds to step S109 to end the process.

  That is, when the amount of solar radiation is less than or equal to the set value, it is difficult to control the air flow by driving the blower motor 24 using the power generated by the solar battery 18 as a power source, and the vehicle interior temperature is not expected to rise so much. . Accordingly, the ECU 30 proceeds to step S109 to end the vehicle interior ventilation.

  Further, when rain is detected, it is necessary to prevent rainwater from entering the passenger compartment, and the passenger compartment temperature is predicted not to increase so much. Accordingly, the ECU 30 proceeds to step S109 to end the vehicle interior ventilation.

  When the door lock is turned off, it can be determined that the occupant has returned to the parked vehicle 1. Accordingly, the ECU 30 proceeds to step S109 to end the vehicle interior ventilation.

  Then, when the process proceeds from step S103, step S106, step S107, or step S108 to step S109, the ECU 30 controls the movable roof panel 14 to the fully closed position, stops the blower motor 24 in step S110, and then performs a routine. Exit.

  According to such an embodiment, when the ECU 30 determines the start of vehicle interior ventilation based on a preset condition, the ECU 30 controls the movable roof panel 14 of the sunroof mechanism 10 to open to a preset open position, By controlling the inside / outside air switching damper 25 of the air conditioning unit 20, the air introduction mode into the vehicle interior is set to the outside air introduction mode, the solar cell 18 is connected to the drive circuit 26 through the power supply switching circuit 27, and the blower motor 24 is driven. Thus, the heat trapped inside the vehicle compartment during parking can be efficiently discharged outside the vehicle with a simple configuration.

  That is, since the ECU 30 performs ventilation control at the time of parking using the sunroof mechanism 10 and the air conditioning unit 20 which are existing configurations, ventilation at the time of parking can be realized with a simple configuration without complicating the structure. it can. Moreover, by opening the movable roof panel 14 to open the roof opening 2a, hot air can be efficiently discharged from the upper part of the vehicle interior where the hot air is most likely to be trapped.

  At that time, by controlling the air outlet switching damper 23, the air outlet vented from the air conditioning unit 20 to the vehicle interior is set in the foot air outlet 22c, and the air in the vehicle interior is guided from the lower side to the upper side, The hot air in the passenger compartment can be discharged from the roof opening 2a to the outside of the vehicle more efficiently.

  Moreover, ventilation control can be performed without imposing a big burden on the battery 5 by driving the blower motor 24 at the time of parking using the generated electric power of the solar cell 18.

  On the other hand, when the ECU 30 determines the end of the vehicle interior ventilation by detecting a decrease in the amount of solar radiation or rain, etc., the ECU 30 controls the movable roof panel 14 to the fully closed position and stops the blower motor 24. Accordingly, the roof opening 2a can be accurately closed, and rainwater can be accurately prevented from entering the passenger compartment.

Schematic configuration diagram of a ventilation device mounted on a vehicle Sectional drawing which shows the principal part of a sunroof mechanism Flow chart showing ventilation control routine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2a ... Roof opening part 10 ... Sunroof mechanism 14 ... Movable roof panel 18 ... Solar cell 20 ... Air-conditioning unit (blowing means)
DESCRIPTION OF SYMBOLS 23 ... Air outlet switching damper 24 ... Blower motor 25 ... Inside / outside air switching damper 30 ... Electronic control unit (ventilation judgment means, sunroof control means, ventilation control means)
32 ... Solar radiation sensor (irradiance detection means)
33 ... Rainfall sensor (rainfall detection means)
34… Key sensor 35… Door lock sensor 36… Fully closed switch

Claims (4)

A sunroof mechanism that opens and closes a roof opening that opens to the roof panel of the vehicle body with a movable roof panel;
A blowing means capable of blowing outside air into the vehicle interior;
Ventilation determination means for determining the start and end of vehicle interior ventilation based on preset conditions;
When the ventilation determining means determines the start of vehicle interior ventilation, the movable roof panel is opened to a preset open position, and when the ventilation determining means determines the end of vehicle interior ventilation, the movable roof panel is opened. Sunroof control means for closing control to the fully closed position;
The ventilation means is driven when the ventilation determining means determines the start of vehicle interior ventilation, and the ventilation control means stops the air blowing means when the ventilation determining means determines the end of the vehicle interior ventilation. Ventilation device for vehicles characterized by this. It has a solar cell that generates electricity with incident sunlight,
The blowing means is driven using the generated power of the solar cell,
2. The vehicle ventilation device according to claim 1, wherein the air blowing control means drives the air blowing means using the generated power of the solar cell. Having rain detection means for detecting the rain condition;
The vehicle ventilation device according to claim 1 or 2, wherein the ventilation determination means determines the end of the vehicle interior ventilation when the rain detection means detects rain. Having a solar radiation amount detecting means for detecting the solar radiation amount;
4. The ventilation determination unit according to claim 1, wherein when the amount of solar radiation detected by the solar radiation amount detection unit is equal to or less than a set value, the end of the vehicle interior ventilation is determined. A vehicle ventilator as described in 1.

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