JPH0551144U - Car ventilation sheet - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the comfort of a vehicle ventilation sheet when the temperature inside the vehicle is high. [Configuration] A sensor 20 for detecting the surface temperature of the sheets 1 and 2 is provided, and a switch 1 is provided in a control circuit 17 of the blower 12.
After turning on 9, the blower 12 is reversely rotated until the surface temperature detected by the sensor 20 becomes equal to or lower than the first set temperature, and air is sucked into the seats 1 and 2 from the seating surfaces of the seats 1 and 2, while the surface is After the temperature becomes equal to or lower than the first set temperature, the fan 12 is normally rotated until the temperature becomes equal to or lower than the second set temperature,
A control unit for controlling air to be blown out from the seating surface of the seat 12 is provided. The high-temperature air accumulated in the seats 1 and 2 is discharged from the blower 12 to the outside and does not blow out from the seating surface of the seat 12. When the temperature becomes equal to or lower than the second set temperature, the blowing of air is stopped.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ventilation sheet for an automobile, which improves a feeling of comfort especially when the temperature inside the vehicle is high.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, in a vehicle seat, in order to improve a feeling of comfort, a ventilation sheet has been proposed in which air is blown from a blower into a seat and air is blown out from a seating surface of the seat.

[0003] When the vehicle with the cooler turned off is left for a long time in the hot weather in summer, for example, the interior of the ventilation sheet becomes hot and the surface temperature of the sheet rises. Under these circumstances, when a person sits down on the seat, stuffiness occurs between the seated person and the seating surface of the seat. Therefore, the seated person turns on the blower switch to blow out the air, so It is for preventing.

[0004]

[Problems to be solved by the device]

 However, since hot air accumulates in the seat and in the duct between the seat and the blower, the hot air becomes hot air immediately after the switch is turned on, and this is not possible. There is a problem that pleasant feeling occurs.

Therefore, an object of the present invention is to provide a ventilation sheet for an automobile, which improves a feeling of comfort when the vehicle interior is hot.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention relates to a ventilation sheet for an automobile, in which air is blown from a blower into the seat so that air is blown out from the seating surface of the seat to the outside. A sensor for detecting the surface temperature of the seat is installed, and after the switch is turned on, the control circuit of the fan is rotated backward until the surface temperature detected by the sensor is below the first set temperature, and the seat is seated. While the air is sucked into the sheet from the surface, the blower is rotated forward until the surface temperature falls below the first set temperature and below the second set temperature, and the air is blown from the seating surface of the seat. It is characterized in that a control unit for controlling so as to blow out to the outside is provided.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. As shown in FIG. 1 and FIG. 2, a vehicle ventilation seat includes a seat cushion 1, a seat back 2, and a headrest 3.

The seat cushion 1 is constructed by placing a cushion foam urethane 4 on an upper portion of a frame (not shown) and covering the urethane foam 4 and the frame with a skin 5 having good air permeability. There is. Of the urethane foam 4, only the seating surface of the seated person is replaced with the foam urethane 4, and a fibrous pad material 6 having good air permeability is placed.

Similar to the seat cushion 1, the seat back 2 has a cushion urethane foam 7 placed on a front portion of a frame (not shown), and the urethane foam 7 and the frame are provided with a skin 8 having good air permeability. It is configured by coating with. Of the urethane foam 7, only the seating surface of the seated person is replaced with the urethane foam 7, and a fibrous pad material 9 having good air permeability is placed.

Air diffusion frames 10 and 11 are provided in the lower portion of the seat cushion 1 and the rear portion of the seat back 2, respectively.

On the other hand, a blower 12 is mounted on the automobile, and the blower 12 and the frames 10 and 11 are connected to each other via connectors 13 and 14 and ducts 15 and 16. As shown in FIG. 3, a control circuit (CPU) 17 is connected to the blower 12 described above, and the rotation of the blower 12 is controlled via a driver 18 in accordance with a control signal from the control circuit 17. In the control circuit 17, after the switch 19 is turned on, the blower 12 is rotated in the reverse direction until the surface temperature detected by the sensor 20 described later becomes equal to or lower than the first set temperature A, and the seat cushion 1 and the seat back 2 are seated. Air is sucked into the seat cushion 1 and the seat back 2 from the surface, while the surface temperature becomes equal to or lower than the first set temperature A and then the fan 12 is normally rotated until the temperature becomes equal to or lower than the second set temperature B. A control unit is provided to control so that air is blown out from the seat cushion 1 and the seating surface of the seat back 2. A sensor 20 for detecting the surface temperature of the seat cushion 1 and the seat back 2 is connected to the control circuit 17.

With the above configuration, when the occupant turns on the switch 19 of the blower 12, referring to FIG. 4, the process starts at step S1 and is initialized at step S2, and the sensor 20 is set at step S3. Determines whether or not the surface temperature detected is equal to or higher than the first set temperature (for example, 30 ° C.), and if YES, a suction ON signal is sent from the control unit of the control circuit 17 to the driver 18 in step S4 and the blower 12 Reversely rotates, and air is sucked into the seat cushion 1 and the seat back 2 from the seating surfaces of the seat cushion 1 and the seat back 2. As a result, the high-temperature air accumulated in the seat cushion 1 and the seat back 2 and the ducts 15 and 16 is discharged from the blower 12 to the outside.

Next, in step S5, it is determined whether or not the surface temperature detected by the sensor 20 is lower than or equal to the first set temperature, and if YES, the controller 18 of the control circuit 17 controls the driver 18 in step S6. A suction OFF signal is sent to the fan 12, and the reverse rotation of the blower 12 is stopped.

Subsequently, in step S7, a blow-on ON signal is sent from the control unit of the control circuit 17 to the driver 18, the blower 12 rotates forward, and each of the seat cushion 1 and the seat back 2 passes through the ducts 15 and 16. Air will come out from the seating surface to the outside. Then, in step S8, it is determined whether or not the surface temperature detected by the sensor 20 is equal to or lower than the second set temperature (for example, 25 ° C.), and if YES, it is blown from the control unit of the control circuit 17 to the driver bar 18 in step S9. The OFF signal is sent, the forward rotation of the blower 12 is stopped, and the process ends at step S10.

As described above, immediately after the switch 19 is turned on, high-temperature air accumulated in the seat cushion 1 and the seat back 2 and the ducts 15 and 16 is discharged from the seat cushion 1 and the seat back 2 respectively. Since the air does not blow out, the comfort in the early stage of sitting is improved, and if the surface temperature of the seat cushion 1 and seat back 2 becomes below the second preset temperature after the start of air blowing, the air blowing stops. Therefore, the feeling of comfort while sitting is improved.

[0016]

[Effect of the device]

 As is clear from the above description, the automotive ventilation sheet of the present invention is provided with a sensor for detecting the surface temperature of the seat, and the control circuit of the blower has the first surface temperature detected by the sensor after the switch is turned on. The blower is rotated in reverse until the temperature falls below the set temperature, and air is sucked into the seat from the seating surface of the seat, while the blower blows until the surface temperature falls below the first set temperature and below the second set temperature. It is provided with a control unit that controls the air to be normally rotated to blow out air from the seating surface of the seat. Therefore, when the switch is turned on, if the surface temperature of the seat is higher than the first set temperature, the blower rotates in the reverse direction, air is sucked into the seat from the seating surface of the seat, and the high temperature accumulated in the seat Air is discharged from the blower to the outside so that it does not blow out from the seating surface of the seat, which improves the comfort at the beginning of seating. Further, when the surface temperature of the seat becomes equal to or lower than the second preset temperature after the air is blown, the air blow is stopped, and the comfort feeling while sitting is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of the ventilation sheet of the present invention.

FIG. 2 is a perspective view of the ventilation sheet of FIG.

[Fig. 3] Control circuit diagram

[Fig. 4] Control flowchart

[Explanation of symbols]

1 ... Seat cushion, 2 ... Seat back, 6, 9 ... Pad material, 12 ... Blower, 15, 16 ... Duct, 17 ... Control circuit, 19 ... Switch, 20 ... Sensor.

Claims (1)

[Scope of utility model registration request] 1. A ventilating sheet for an automobile, in which air is blown from a blower into the seat so that air is blown out from the seating surface of the seat to the outside, the sensor being provided with a sensor for detecting the surface temperature of the seat. In the blower control circuit, after the switch is turned on, the blower is reversely rotated until the surface temperature detected by the sensor becomes equal to or lower than the first set temperature, and air is sucked into the seat from the seating surface of the seat. A control unit is provided that controls the blower to rotate normally until the surface temperature becomes equal to or lower than the first preset temperature and then equal to or lower than the second preset temperature to blow air from the seating surface of the seat to the outside. A ventilation sheet for automobiles, which is characterized in that