JP2002254924A - Cooling structure for trunk room of car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure for a trunk room of a car capable of efficiently cooling the inside of the trunk room without impairing the cooling capacity in a cabin. SOLUTION: In the cooling structure for the trunk room of the car having the cabin and the trunk room partitioned from each other, a fan 6 for guiding the air in the cabin 2 into the trunk room 5 is provided on a partition for partitioning the cabin 2 from the trunk room 5, and exhaust means 8 and 9 for exhausting the air in the trunk room 5 outside the cabin are provided on an external wall 7 of the trunk room 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for cooling a trunk room of an automobile.

[0002]

2. Description of the Related Art In a car such as a sedan-type car, in which a cabin is separated from a trunk room, the inside of the independent trunk room has a considerably high temperature when running under the hot summer weather, and the inside is vulnerable to high temperatures. If there is something in it, it can hurt or alter it.

[0003] Conventionally, there is no structure that actively cools a trunk room, but there is an example in which air in a vehicle compartment is passed through the trunk room to discharge the air outside the vehicle (Japanese Patent Application Laid-Open No. 8-142645). In this example, an exhaust port is provided in a rear parcel panel that separates a cabin and a trunk room.

[0004]

However, merely having an opening in the rear parcel panel does not actively introduce the air in the cabin into the trunk room, and has a large opening even if the cabin is cooled. Unless it is difficult to cool down to the trunk room. On the other hand, when the passenger compartment is being heated, heat is easily released and the heating efficiency is reduced.

[0005] It is sufficient to provide a dedicated cooling unit for the trunk room, but it is expensive and the cooling unit occupies a part of the trunk room to reduce the volume. There is also a method of extending the duct from the air conditioner in the passenger compartment to the trunk room for cooling, but the cooling capacity of the passenger compartment is reduced,
It is not easy to secure the space for the duct.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inexpensive trunk trunk cooling structure for an automobile that can efficiently cool the trunk compartment without impairing the cooling capacity of the passenger compartment. On the point.

[0007]

In order to achieve the above object, the invention according to the first aspect of the present invention is directed to a vehicle having a compartment and a trunk room, wherein the partition wall partitions the compartment and the trunk room. The vehicle has a cooling structure in a trunk room of a vehicle, which is provided with a blower for guiding air in a vehicle compartment into a trunk room, and a discharge means for discharging air in the trunk room to the outside of the vehicle on the outer wall of the trunk room.

The air in the passenger compartment is positively guided into the trunk room by driving the air blower, and the air in the trunk room is discharged to the outside of the vehicle by the discharging means to form a smooth air flow. Cooled air after cooling is smoothly introduced into the trunk room to cool the inside of the trunk room, so that the inside of the trunk room can be efficiently cooled without impairing the cooling capacity in the vehicle interior.

A simple structure including a blower for air guide and a discharge means is provided, so that the cost can be suppressed and the capacity in the trunk room is not greatly sacrificed.

According to a second aspect of the present invention, in the cooling structure for a trunk room of an automobile according to the first aspect, the discharge means is a blower for discharging air in the trunk room out of the vehicle by rotation of a fan. Features.

Since the air in the trunk room is positively discharged to the outside of the vehicle by the blower for discharging air, the flow of air becomes smoother, and the weak cold air heated by the body temperature of the occupant in the vehicle room is positively discharged. It is possible to efficiently cool not only the interior of the vehicle but also the interior of the trunk room.

According to a third aspect of the present invention, in the cooling structure for a trunk room of an automobile according to the first aspect, the partition wall provided with the air blower is a rear parcel shelf.

[0013] The cold air in the air conditioning in the passenger compartment is mainly blown out toward the front seat, and the weak cold air deprived of heat from the body temperature of the occupants in the passenger compartment flows to the rear of the passenger compartment. By providing a blower in the rear parcel shelf at the rear end of the passenger compartment, which is a wall, the warm weak air can be efficiently introduced into the trunk room, and the cooling capacity in the passenger compartment can be kept high. At the same time, the inside of the trunk room can be cooled.

According to a fourth aspect of the present invention, in the cooling structure in a trunk room of an automobile according to any one of the first to third aspects, the operation output of at least one of the air blower and the exhaust fan is provided. Is changed according to the vehicle speed.

By changing the operation output of at least one of the air blower and the exhaust blower according to the vehicle speed,
The operation sound of the blower can be prevented from being bothered by the occupant.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS. 1 and 2 show an automobile 1 to which a trunk room cooling structure according to the present embodiment is applied.

FIG. 1 is a perspective view of the vehicle 1 as viewed obliquely from the rear. The trunk lid is removed so that the interior of the trunk room 5 can be seen. The rear parcel shelf 4 behind the rear seat 3 behind the cabin 2 is a trunk room 5
And the cabin 2.

The rear parcel shelf 4 has openings at two places on the left and right sides, and each opening has a ventilation fan 6 as a blower.
6 are fitted and mounted. As shown in FIG. 4, the fan 6c for the wind guide is configured such that the fan 6c rotates in a flat cylindrical body 6b having rectangular mounting frames 6a, 6a provided on both sides.

An exhaust fan 9 which is also a blower is mounted on an opening 8 (see FIG. 3) provided on the left side wall 7 of the trunk room 5. The exhaust fan 9 has a structure in which two fans are arranged side by side in a long rectangular mounting frame.

The lower part of the side wall 7 is covered from the outside by a part which goes around the left side of the rear bumper 10, but has a space between the side wall 7 and the rear bumper 10 as shown in FIG. It is open.

The side wall 7 is a side wall that separates the trunk room 5 from the outside of the vehicle, and an exhaust fan 9 is attached to an opening 8 of the side wall 7 from the side of the trunk room 5. As shown in FIG. 3, a rubber plate 11 is provided on the outside opposite to the exhaust fan 9 across the opening 8 so as to cover the opening 8. Rubber plate
The upper end 11 is fixed to the upper opening edge of the opening 8 with a screw 12, and the lower end is a free end. The upper edge of the rubber plate 11 may be locked by a clip or the like, or may be bonded by an adhesive.

Therefore, when the exhaust fan 9 is not driven, the rubber plate 11 is screwed on the upper end edge and extends downward to cover the opening 8 as shown by the solid line in FIG. When the exhaust fan 9 is driven to exhaust the air in the trunk room 5, the exhaust gas is pushed by the exhaust air to elastically deform the rubber plate 11 into an arc shape as shown by a two-dot chain line in FIG.
Can be released and the air can be exhausted to the outside.

Although the exhaust fan 9 is attached to the opening 8 of the side wall 7 from the trunk room 5 side, it may be attached from the outside. In this case, the rubber plate is provided on the downstream side of the exhaust fan 9. The upper edge is fixed to the surface. Since the exhaust fan 9 does not protrude into the trunk room 5, it can be widely used without sacrificing the volume of the trunk room 5.

The trunk room 5 is provided with a temperature sensor 15 for detecting an internal atmosphere temperature. The air guide fan 6 and the exhaust fan 9 are provided by an electronic control unit ECU.
The drive is controlled by 20 and a schematic block diagram of the control system is shown in FIG. The temperature information in the trunk room 5 detected by the temperature sensor 15 and the vehicle speed information detected by the vehicle speed sensor 16 are input to the ECU 20.

The input temperature information and vehicle speed information are stored in an ECU.
The control signal is processed by 20 to output a control signal to the motor driver 17, and the motor driver 17 drives the wind guide fan 6 and the exhaust fan 9.

FIG. 6 shows a control flowchart of the air guide fan 6 and the exhaust fan 9 in the above control system. First, the temperature information in the trunk room 5 detected by the temperature sensor 15 is taken (step 1), and then the vehicle speed information detected by the vehicle speed sensor 16 is taken (step 2). When the process proceeds to step 3, the temperature in the trunk room 5 becomes 35 degrees. It is determined whether or not the temperature is equal to or higher than C, and if it is equal to or more than 35 degrees C, the process proceeds to step 4;

When the process proceeds to step 4 at 35 ° C. or more, the drive of the wind guide fan 6 and the exhaust fan 9 is controlled so as to change the rotation speed of the fan according to the vehicle speed. When the vehicle is running at a low speed, the fan is rotated at a low speed, and the rotation speed of the fan is controlled to increase as the vehicle speed increases. When the process proceeds to step 5 at a temperature lower than 35 degrees C, the driving of the fan is stopped.

The trunk room cooling structure is structured as described above, and the ambient temperature in the trunk room 5 is 35 ° C. while the vehicle 2 is running while being cooled by an air conditioner.
When this is done, the fan 6 and the fan 9 are driven.

The rear parcel shelf 4 at the rear end of the cabin 2
The cooling air in the cabin 2 is introduced into the trunk room 5 by the driving of the wind guide fans 6 and 6 provided in the vehicle room to cool the trunk room 5.

The weak cold air which has been heated by depriving the occupants of the passenger compartment of the passenger compartment in the passenger compartment 2 of the temperature and flowing to the rear of the passenger compartment 2 is efficiently supplied to the trunk room by the ventilation fans 6, 6 located at the rearmost part of the passenger compartment 2. 5 is introduced. Since the inside of the trunk room 5 is cooled by the weak cold air after the heat is removed from the occupants, the cooling capacity in the passenger compartment 2 is not impaired.

The air that has taken heat in the trunk room 5 is discharged from the vehicle through the opening 8 by the driving of the exhaust fan 9, so that the air flows smoothly without stagnation in the trunk room 5 and efficiently enters the trunk room 5. Can be cooled. When the ambient temperature in the trunk room 5 becomes lower than 35 ° C., the driving of the ventilation fan 6 and the ventilation fan 9 is stopped.

Further, since the air flow in the trunk room 5 is smooth, the weak cold air in the passenger compartment 2 can be smoothly introduced into the trunk room 5, which contributes to the maintenance of the cooling capacity in the passenger compartment 2. .

The fan 6 and the fan 9 change the number of revolutions of the fan according to the vehicle speed, and when the noise accompanying traveling is small, such as when traveling at low speed, the rotational speed of the fan is reduced. When the road operation noise and the engine noise are large, such as during high-speed running, the fan operation noise is reduced to the noise and the occupant does not feel troubled even if the rotation speed of the fan is increased.

The flow of air by the fan 6 for guiding air and the fan 9 for exhausting air is unidirectional and does not flow backward, so that the air warmed in the trunk room 5 does not enter the passenger compartment 2.

When the temperature falls below 35 ° C., the fan 6 for guiding air and the fan 9 for exhausting air stop driving.
Since the opening 8 is closed by the rubber plate 11, it is possible to prevent the cool air in the trunk room 5 from escaping wastefully. At the time of heating, the passenger compartment 2 and the trunk room 5 are appropriately partitioned in a state where the ventilation fan 6 is stopped, so that heat hardly escapes and the heating efficiency does not decrease.

Further, the fan 6 for guiding air and the fan 9 for exhausting air
Has a flat shape as shown in FIG. 4 and is provided along the rear parcel shelf 4 and the side wall 7 of the trunk room 5, so that the volume in the trunk room 5 is not reduced. Fan 6 for exhaust air and fan 9 for exhaust air
It is a simple structure for mounting, and cost can be suppressed.

In the above-described embodiment, the fan 6 for guiding air and the fan 9 for exhausting air are driven when the temperature in the trunk room 5 becomes 35 ° C. or more.
It is not limited to the degree C.

In the above-described embodiment, the exhaust fan 9 is provided to exhaust the air in the trunk room 5 to the outside of the vehicle. However, an appropriate number of exhaust ports are provided at appropriate positions without the fan. By allowing the air introduced into the trunk room 5 to naturally flow out by the ventilation fan 6, the inside of the trunk room 5 can be cooled to some extent without impairing the cooling capacity in the passenger compartment 2.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view of an automobile to which a trunk room cooling structure according to an embodiment of the present invention is applied.

FIG. 2 is a rear side view of the vehicle.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a perspective view of the fan 6 for guiding air.

FIG. 5 is a schematic block diagram of a control system that controls the driving of a fan for guiding air and a fan for exhausting air.

FIG. 6 is a control flowchart in the control system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Cabin, 3 ... Rear seat, 4 ... Rear parcel shelf, 5 ... Trunk room, 6 ... Fan for wind guide,
7 ... side wall, 8 ... opening, 9 ... exhaust fan, 10 ... rear bumper, 11 ... rubber plate, 12 ... screw, 15 ... temperature sensor, 16 ... vehicle speed sensor, 17 ... motor driver, 20 ... ECU.

Claims (4)

[Claims] 1. An automobile in which a cabin and a trunk room are separated, wherein a partition wall separating the cabin and the trunk room is provided with a blower for guiding air in the vehicle room into the trunk room, and air in the trunk room is provided on an outer wall of the trunk room. A cooling means in a trunk room of a motor vehicle, characterized by comprising a discharge means for discharging air from outside the vehicle. 2. The structure according to claim 1, wherein said exhaust means is an air blower for exhausting air in the trunk room to the outside of the vehicle by rotation of a fan. 3. The cooling structure in a trunk room of an automobile according to claim 1, wherein the partition wall provided with the air blower is a rear parcel shelf. 4. The vehicle according to claim 1, wherein an operation output of at least one of the air guide blower and the exhaust blower is changed according to a vehicle speed. Cooling structure in the trunk room.