JPH11165531A - Ventilator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a rise in temperature effectively by driving the fan of an in-vehicle fan device 2 by electric power of a solar battery, during parking. SOLUTION: An in-vehicle fan device 2 equipped with a fan driven by a motor, a solar battery 18 transducing sunbeams to electric energy, and a ventilation controlling means performing control to drive the motor by output of the solar battery 18 are provided in a vehicle 1. In this ventilation controlling means, the motor is driven when a voltage of the solar battery 18 connected to the motor exceeds a drive set voltage, and stopped at a voltage no more than a downward stop set voltage which is lower than the drive set voltage. By stopping the motor at the voltage of the solar battery 18 not exceeding the downward stop set voltage which is lower than the drive set voltage, the motor is not driven at low voltage with much loss, so that durability of the motor is not impaired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle ventilator for preventing a temperature inside a vehicle from increasing during parking.

[0002]

Conventionally, as this kind, Japanese Patent Publication No. 60-9929 discloses a solar cell mounted on a vehicle body for converting sunlight into electric energy.
Communication means for communicating between the vehicle interior and the trunk room;
A ventilator for an automobile, which is driven by the output of the solar cell and has a blower that exhausts the air in the passenger compartment to the outside of the vehicle through the communication unit and the trunk room, has been proposed. It is provided in the trunk room, and the ventilation means can be driven by the output of the solar cell irrespective of the vehicle-mounted storage battery, so that ventilation in the vehicle interior and the trunk room can be performed. Further, the blowers are fixed to the inside of a blower duct attached to the back surface of the trunk lid of the trunk room by mounting stays (column 5, lines 1 to 4), and a blower opening communicating with the trunk room has a rear side wall in the passenger compartment. (Opening column 4, lines 20-21).

However, in the ventilation system disclosed in Japanese Patent Publication No. 60-9929, the ventilation means is provided in the trunk room, so that the ventilation means is provided in the trunk separately from the ventilation system in the vehicle, and the ventilation duct is provided. It is necessary to modify the trunk in order to provide it, and there is a problem that the space in the trunk is narrowed.

Further, in the above-described Japanese Patent Publication No. 60-9929, a switch is installed in a vehicle room or a trunk room, and is closed when the temperature of the room rises to a predetermined temperature. (Section 6, lines 3-5), and the ventilation air volume can be increased as the sun's rays are stronger (JP 7, column 20-20).
Line), it is described that when the illuminance of the sun is weak, the amount of air blows by the blower decreases (gazette column 7, lines 7 to 8).

As described above, in the above-described vehicle ventilator, since the ventilator is driven by a temperature-sensitive switch provided inside the vehicle or the like, when the temperature inside the vehicle rises, even if the sun is temporarily shaded by clouds or the like, The drive of the blower motor is continued. However, when the illuminance is low, the output of the solar cell is low, and if the motor is forced to continue rotating in such a low output state, not only is the efficiency low, but also the durability is adversely affected. There's a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle ventilator capable of suppressing an increase in the vehicle temperature due to vehicle ventilation during parking and efficiently driving a motor of the vehicle ventilation system. And

[0007]

According to the first aspect of the present invention, there is provided an in-vehicle blower having a blower fan driven by a motor, a solar cell for converting sunlight into electric energy,
A ventilation control unit that controls the motor to be driven by the output of the solar cell, and a vehicle ventilation device provided in a vehicle, wherein the ventilation control unit includes a voltage of the solar cell connected to the motor, The motor is driven at a drive set voltage or higher, and the motor is stopped at a lower stop set voltage lower than the drive set voltage or lower.

According to the first aspect of the present invention, the motor of the blower fan of the in-vehicle air blower of the vehicle is started to be driven under the condition that the voltage of the solar cell is higher than the drive set voltage and the drive efficiency is high, and the drive voltage is reduced to the drive set voltage. By stopping at a lower lower stop set voltage or lower, efficient ventilation is performed, and the motor is not driven at a low voltage with a large loss, so that the durability of the motor is not impaired. Further, the voltage of the solar cell changes due to a change in illuminance, and the voltage may temporarily decrease due to, for example, movement of a cloud. However, by setting the lower stop setting voltage V2 lower than the driving setting voltage V1, the driving is performed. The intermittent operation of the motor due to a voltage change near the set voltage V1 can be prevented.

Further, according to a second aspect of the present invention, the motor is stopped at an upper stop set voltage higher than the drive set voltage.

According to this configuration, when the voltage of the solar cell is excessively increased, the current is sharply reduced and the output is decreased. The life of the motor can be improved.

Further, in the invention according to claim 3, the lower stop set voltage and the upper stop set voltage are set above and below an output peak voltage of the solar cell.

According to the third aspect of the present invention, the motor is driven between the upper drive set voltage and the lower drive set voltage, so that the motor can be driven in the upper and lower ranges of the optimum operating voltage.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a solar cell 18 is electrically connected to a motor 12 of a blower fan 10 of an in-vehicle air blower 2, and the blower fan 10 takes in outside air into a vehicle interior 3 for ventilation. At this time, when the voltage V of the solar cell 18 is equal to or higher than the drive set voltage V1, the motor 12 of the blower fan 10 is driven,
When the voltage V becomes equal to or lower than the lower stop set voltage V2 or equal to or higher than the upper stop set voltage V3 after driving, the motor 12 is stopped, and the lower stop set voltage V2 and the upper stop set voltage V3 are set.
Is controlled so as to drive the motor 12.

FIG. 1 to FIG. 8 show a first embodiment of the present invention.
As shown in FIG. 1 to FIG. 3, the in-vehicle air blower 2 includes a defroster-side air outlet 5 and a ventilator-side air outlet 6 in an instrument panel 4 at a front portion of the vehicle interior 3. And a floor-side outlet 7, and each of the outlets 5, 6, 7 is provided with an opening / closing member 5 A, 6 A, 7 A which is opened or closed by an electric or outlet switching unit 37. A heater core 8 having a switching member 8A for switching the flow of air, a cooling heat exchanger 9, and a blower fan 10 are provided inside the air conditioner.
The introduction port 10 is provided with a motor-driven or electric-type switching member 11A for switching the air-conditioning mode between outside air introduction and inside air circulation by an air-conditioning mode operation unit 36. The blower fan 10 is driven by a motor 12.

An electric opening / closing type side window 15 is provided in an opening 14 of the side door 13 of the vehicle 1, and a visor 16 is fixed to the side door 13 above the side window 15. The side window 15 is opened and closed by an electric opening and closing device 15A. A solar cell 18 using an amorphous solar cell is provided on a roof 17 of the vehicle 1. In this example, the illuminance sensor 19 is arranged near the solar cell 18.

A temperature sensor 20 is provided in the interior 3 of the vehicle.
By providing the temperature sensor 20 on the headrest 22 of the seat 21, the temperature sensor 20 is disposed near the roof 17. It is preferable that the temperature sensor 20 be disposed on the center side of the headrest 22 in the vehicle.

The in-vehicle blower 2, the solar cell 18, the illuminance sensor 19, and the temperature sensor 20 are electrically connected to ventilation control means 31 constituted by a microcomputer or the like, and correspond to the illuminance detected by the illuminance sensor 19. The detected signal and the detection signal corresponding to the vehicle interior temperature detected by the temperature sensor are output to the ventilation control means 31, respectively.

The vehicle ventilator of the present invention includes an ignition switch detecting means 23, a voltage detecting means 24 for detecting the voltage of the solar cell 18, an air conditioning mode detecting means 25, and a manual switch 26. The ignition switch detection means 23 is for determining whether the engine is on or off. Generally, a key cylinder switch operated by a key can be used, and the ignition switch operation signal based on the on / off of the switch is transmitted to the ventilation switch. Control means
Output to 31. Further, the voltage detecting means 24 detects the voltage of the solar cell 18 and outputs a detection signal corresponding to this voltage to the ventilation control means 31. Further, the air-conditioning mode detecting means 25 detects the air-conditioning mode of the in-vehicle air blower 2 and the opening / closing of the air outlets 5, 6, and 7, and outputs these detection signals to the ventilation control means 31.

The ventilation control means 31 includes a voltage comparison means 32 for comparing the voltage V of the solar cell 18 with a drive set voltage V1, a lower stop set voltage V2, and an upper stop set voltage V3 (V3>V1> V2). The air conditioning mode switching means 33 for controlling the air conditioning mode to be outside air introduction, opening the ventilating side outlet 5 and closing the defroster side outlet 5 and the floor side outlet 7, and the temperature sensor 20. Temperature comparing means 34 for comparing the in-vehicle temperature T with the set driving and stopping temperatures T1 and T2, the illuminance L based on the illuminance sensor 19 and the set illuminance L
And an illuminance comparison means 35 for comparing the illuminance with the illumination light. Then, the ventilation control means 31 drives the blower fan 10 on condition that the voltage V is equal to or higher than the drive set voltage V1, and the voltage V is equal to or lower than the lower stop set voltage V2 or the upper stop set voltage V3. At this point, the motor 12 of the blower fan 10 is controlled to stop, and the blower fan 10
Before the air conditioner is driven, the air conditioning mode is switched to outside air introduction, and the opening / closing members 5A, 6A, 7A are operated to open the ventilating-side outlet 6 and close the defroster-side outlet 5 and the floor-side outlet 7. Control is performed so that the drive set temperature T1 is lowered if the illuminance L is equal to or greater than the set illuminance L1. In addition, voltage comparison means
Reference numeral 32 denotes a temperature comparison means that can set drive and stop set voltages V1, V2, and V3 arbitrarily and store the set values.
Numeral 34 indicates that the drive and stop set temperatures T1 and T2 can be set arbitrarily and the set values are stored.
The set illuminance L1 can be set arbitrarily and the set value is stored. In the present embodiment, as preferred examples, the drive and stop set temperatures T1 and T2 are set to 35 ° C. and 30 ° C., and the set illuminance L is set to 50,000 lux.

FIG. 8 shows the embodiment in which the motor 12 is connected to the solar cell 18, the current (ampere) and the output (watt) of the solar cell 18 with respect to illuminance are plotted on the vertical axis, and the voltage (volt) is plotted on the horizontal axis. The current I1 and the output W1 are illuminance 25000 lux, the current I2 and the output W2 are illuminance 30000 lux, the current I3 and the output W3 are illuminance 4
000 lux, current I4 and output W4 are illuminance 5000
0 lux, current I5 and output W5 are illuminance of 58,000 lux, current I6 and output W6 are illuminance of 70,000 lux, current I7 and output W7 are illuminance of 80000 lux, current I8
And the output W8 is for the case of an illuminance of 89000 lux. As shown in the graph, the voltage was 12
The output is maximum between 18 volts and 18 volts, and the voltage during this period is considered to be the optimum operating voltage of the motor 12. When the voltage becomes higher than the voltage at the time of the output peak, the current sharply decreases, the output also decreases, and It has been found that when the voltage is lower than the output peak, the output decreases in a manner substantially proportional to the voltage. Therefore, in order to drive the motor 12 under optimum conditions, the drive setting voltage V1, the lower stop setting voltage V2,
The upper stop setting voltage V3 is set to 12 volts, 10 volts, 18
Bolts.

Next, the operation of the present apparatus will be described based on the flowchart of FIG. 4 showing the operation procedure of the ventilation control means 31. In the flowchart of FIG. 4, first, the ventilation control unit 31 determines whether the manual switch 26 is on or off (S · 1). If the manual switch 26 is on, based on the operation signal from the ignition switch detection unit 23, It is determined that the engine has stopped (S2). If the engine has stopped, the voltage V of the solar cell 18 is compared with the drive set voltage V1 by the voltage comparison means 32 of the ventilation control means 31 (S · 2).
3) If the voltage V of the solar cell 18 is equal to or higher than the drive voltage V1 (12 volts), then the ventilation control means 31 sets the in-vehicle air blower 2 to the air conditioning mode based on the detection signal from the air conditioning mode detection means 25. Detects the open / closed state of each outlet 5, 6, 7
These are compared with a state in which the outside air is introduced, the vent side outlet 6 is opened, and the other outlets 5 and 7 are closed (S · 4), and the air conditioning mode switching means 33 of the ventilation control means 31 sets the air conditioning mode. The outside air is introduced, the ventilating side outlet 6 is opened, and the other outlets 5, 7 are changed to the closed mode (S5). Next, the illuminance comparison means 35 of the ventilation control means 31 compares whether or not the illuminance L is equal to or more than the set illuminance L1 (50,000 lux) based on the detection signal of the illuminance sensor 19 (S.7). continue,
If the illuminance L is equal to or more than 50,000 lux, the ventilation control means 31 sets the drive set temperature T1 low (S · 7). If the illuminance L is less than 50,000 lux, the ventilation control means 31 sets the drive set temperature T1.
Is set to a preset 35 ° C. (S · 8). That is, in this example, since the temperature to be lowered Δt = 2 ° C., when the illuminance L is equal to or more than 50,000 lux, the drive set temperature T1
Is lowered by 2 ° C from 35 ° C to 33 ° C. next,
The temperature comparison means 34 of the ventilation control means 31 compares whether or not the vehicle interior temperature T based on the detection signal of the temperature sensor 20 is equal to or higher than the drive set temperature T1 (S6).
Is reached, it is determined whether or not the blower fan 10 is driven (S · 10). Since the blower fan 10 is initially stopped, the output of the solar cell 18 causes the blower fan 10 to stop operating. The motor 12 is driven (S · 11). Note that the Δt
Is smaller than the difference between the set drive temperature T1 and the stop drive temperature T2.

When the blower fan 10 is driven, the outside air blows out from the ventilating-side outlet 6 toward the lower area of the roof 17 of the vehicle interior 3, and an air flow is generated there.
Ventilation in the upper space inside the vehicle, which becomes hot, is performed efficiently. Further, when the illuminance L is high, the drive set temperature T1 for driving the blower fan 10 is controlled to be low. Therefore, when the illuminance L is large, the temperature T in the vehicle generally increases quickly.
By starting ventilation early, the heat inside the vehicle can be efficiently discharged.

Next, after the blower fan 10 is driven, the temperature comparison means 34 of the ventilation control means 31 compares the in-vehicle temperature T with the set stop temperature T2 (S12), and the in-vehicle temperature T becomes the set stop temperature T2. If the engine has stopped, it is determined whether or not the engine has stopped (S13). If the engine has stopped, the voltage V of the solar cell 18 and the lower stop set voltage V2 (10 volts) are determined. The voltage V and the upper stop setting voltage V
3 (18 volts) (S.14). While the voltage V is higher than the lower stop set voltage V2 and lower than the upper stop voltage V3, the process returns to (S.10) and the blower fan is stopped. The driving of the ten motors 12 continues.

On the other hand, the voltage V of the solar cell 18, the lower stop set voltage V2 (10 volts), and the upper stop set voltage V3 (1
(S · 14), if the voltage V is lower than the lower stop set voltage V2 or higher than the upper stop set voltage V3, the motor 12 of the blower fan 10 is stopped (S · 1).
5) Return to before the comparison (S · 12).

As described above, by setting the lower stop set voltage V2 of the motor 12 of the blower fan 10 lower than the drive set voltage V1, intermittent operation of the motor 12 due to a voltage change near the drive set voltage V1 is prevented. For example, even if the sun is shaded due to the movement of clouds or the like, the motor 12 does not stop every time if it is temporary, so that the durability of the motor 12 is not impaired. In addition, by stopping the motor 12 at or above the upper stop set voltage V3, which is slightly higher than the output peak voltage, the driving of the motor 12 is stopped under an output condition in which the output voltage suddenly drops above the output peak voltage which is a characteristic of the solar cell 18. be able to.

Further, the blower fan 10 is stopped (S15).
Even in the case where the vehicle temperature T exceeds the stop set temperature T2 (S · 12) and the engine is stopped (S · 13), the voltage V becomes lower stop set voltage V2 by comparison (S · 14).
Is exceeded and the voltage is lower than the upper stop set voltage V3, the blower fan 10 is driven again (S.11).

After the blower fan 10 is driven, the temperature comparison means 34 of the ventilation control means 31 compares the in-vehicle temperature T with the set stop temperature T2 (S.12). , The ventilation control means 31
Is stopped (S16). After the blower fan 10 is driven, the ventilation control means 31 determines that the in-vehicle temperature T has reached the set stop temperature T2.
If it exceeds, it is determined that the engine has stopped (S.1
3) If the engine is not stopped, blower fan 1
Stop 0 (S16). The case where the engine is driven is, for example, a case where the driver returns to the parked vehicle 1 and starts the engine.

The above flowchart shown in FIG. 4 is repeated repeatedly while the manual switch 26 is on and the engine is stopped.

In order to detect the air conditioning mode of the in-vehicle air blower 2 and the opening / closing of the air outlets 5, 6, and 7, the operation lever, knob, switch, etc. on the front of the instrument panel 4, as shown in FIG. The air conditioning mode operation unit 36 and the air outlet switching operation unit 37 can be used, and the air conditioning mode operation unit 36 drives the switching member 11A to switch between outside air introduction and internal air circulation, and the air outlet switching operation unit 37 Is the opening / closing member 5
A, 6A, and 7A are driven to switch the opening and closing of the outlets 5, 6, and 7. The air conditioning mode operation unit 36
And the mode of the outlet switching operation section 37 is detected by the air-conditioning mode detection means 25, and under the control of the air-conditioning mode switching means 33, the air-conditioning mode operation section 36 and the air outlet switching operation section 37 are detected.
May be switched to the outside air introduction and the ventilation only from the ventilating side outlet 6.

Next, the ventilation in the vehicle according to the present invention will be described with reference to FIGS. As shown in FIG. 6, the temperature is measured at a point C near the roof 17 in the vehicle interior 3, a point F near the floor, and a point S substantially at the center in the height direction. FIG. 7 is a graph showing the relationship between temperature and time when the air conditioner cooling operation is performed using the means 9. As shown in the graph, generally, when the vehicle 1 is parked under the scorching sun, the position C near the roof 17
The temperature at the point is maximum. On the other hand, as shown in FIG. 6, by blowing the outside air from the ventilating-side outlet 6, an air flow is generated at a lower portion of the roof 17, and the temperature rise near the point C can be efficiently suppressed. it can. Also,
Since a rise in the temperature of the roof 17 can be suppressed, a decrease in the output of the solar cell 18 due to the rise in temperature can also be suppressed.

As described above, in the present embodiment, an in-vehicle blower 2 having a blower fan 10 driven by a motor 12, a solar cell 18 for converting sunlight into electric energy, A ventilation control means 31 for controlling the motor 12 to be driven by the output of the battery 18;
The control is performed so that the motor 12 is driven at a voltage V of the solar cell 18 connected to the motor 12 at the drive setting voltage V1 or higher and the motor 12 is stopped at the lower stop setting voltage V2 lower than the drive setting voltage V1. The motor 12 of the blower fan 10 of the air blower 2 in the vehicle 1
Starts driving under the condition of high drive efficiency equal to or higher than the drive set voltage V1, and stops at the lower stop set voltage V2 equal to or lower than the drive set voltage V1, so that efficient ventilation can be performed and low loss with much loss can be achieved. Since the motor is not driven by the voltage, the durability of the motor 12 is not impaired. Further, the voltage V of the solar cell 18 changes due to the change of the illuminance L,
For example, the voltage V may temporarily decrease due to the movement of clouds, etc., but the lower stop set voltage V2 is changed to the drive set voltage V1.
By setting it lower, the intermittent operation of the motor 12 due to a voltage change near the drive set voltage V1 can be prevented, and the durability of the motor 12 is not impaired.

Further, as described above, in this embodiment, claim 2
In response to the above, the motor 12 is stopped at an upper stop set voltage V3 or higher that is higher than the drive set voltage V. Therefore, when the voltage increases excessively, the current suddenly decreases and the output decreases. Therefore, the life of the motor 12 can be improved by stopping the motor 12 at the upper stop set voltage V3 or higher.

Furthermore, in this embodiment, the lower stop set voltage V2 and the upper stop set voltage V3 are set to be above and below the output peak voltage of the solar cell 18 according to the third aspect. Set voltage V3 and lower drive set voltage V2
By driving the motor 12 between the two, the motor 12 can be driven in the upper and lower ranges of the optimum operating voltage, and the motor 12 can be efficiently driven by the solar cell 18.

FIGS. 9 to 12 show a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. If the illuminance L is less than the set illuminance L1, the ventilation control means 31 opens the side window 15 by a predetermined amount H1, and
Is greater than or equal to the set illuminance L1, the side window 15 is controlled to be opened and closed by a predetermined amount H2 larger than the predetermined amount H1. Further, an intrusion detection sensor 42 such as an optical sensor for detecting intrusion into the opening / closing portion of the side window 15 is provided on a pillar 41 of the vehicle 1 or the like.
The alarm control means 43 drives the alarm means 44 in response to the detection signal, and the alarm sound is notified.
Under the control of 43, the electric opening / closing device 15A is driven to close the side window 15. For example, if the warning means 44 is the horn of the vehicle 1, the warning sound is used for notification, and if the warning means 44 is the light of the vehicle 1, the notification is made by lighting or blinking. A raindrop sensor 45 is provided on the inner surface of the visor 16 and the like. When rain enters the opening of the side window 15, the ventilation control means 31 is electrically opened and closed by a detection signal from the raindrop sensor 45. Device 15
A is driven to close the side window 15. The mounting position of the raindrop sensor 45 is
Although it is not limited to the inner surface of the vehicle 16, since the raindrop sensor 45 on the inner surface of the visor 16 detects rain in a situation involving wind, etc., by closing the side window 15 by the detection, the inside of the vehicle is detected. 3 can be prevented from penetrating rain. Further, when the visor 16 is provided in another place, the side window 15 is closed when rainfall exceeding a predetermined value at which rain enters the inside of the visor 16 is detected by an experiment or the like. I just need.

Next, the operation of the present apparatus will be described with reference to the flowchart of FIG. 12 showing the operation procedure of the ventilation control means 31 of the present embodiment. In the flowchart of FIG.
First, the ventilation control means 31 determines whether the manual switch 26 is on or off (S · 1), and if the manual switch 26 is on, determines whether to stop the engine based on an operation signal from the ignition switch detection means 23 ( S ・ 2),
If the engine is stopped, the voltage V of the solar cell 18 and the drive setting voltage V1 are determined by the voltage comparison means 32 of the ventilation control means 31.
(S3), and if the voltage V of the solar cell 18 is equal to or higher than the driving voltage V1 (12 volts), then the ventilation control means
In 31, the in-vehicle air blower 2 detects the air-conditioning mode and the open / closed state of each of the air outlets 5, 6, 7 based on the detection signal from the air-conditioning mode detecting means 25, introduces these into the outside air, and opens the ventilated air outlet 6. The other outlets 5 and 7 are compared with the closed state (S · 4), and the air-conditioning mode switching unit 33 of the ventilation control unit 31 is compared.
However, the air conditioning mode is changed to a mode in which the outside air is introduced, the ventilating side outlet 6 is opened, and the other outlets 5 and 7 are closed (S
・ 5). Next, the temperature comparison means 34 of the ventilation control means 31 compares whether or not the vehicle interior temperature T based on the detection signal of the temperature sensor 20 is equal to or higher than the drive set temperature T1 (35 ° C.) (S ·
6) If the drive set temperature T1 has been reached, the illuminance comparison means 35 of the ventilation control means 31 determines whether or not the illuminance L is equal to or greater than the set illuminance L1 (50,000 lux) based on the detection signal of the illuminance sensor 19. Compare (S7). Ventilation control means 31
If the illuminance L is equal to or more than 50,000 lux, the electric opening / closing device 15A is driven to open the side window 15 by H2 (50 mm) (S · 8), and if the illuminance L is less than 50,000 lux, the side window 15 Is opened by H1 (20 mm), and then it is determined whether or not the blower fan 10 is driven (S
After the step 10), since the blower fan 10 is initially stopped, the motor 12 of the blower fan 10 is driven by the output of the solar cell 18 (S · 11).

When the blower fan 10 is driven, outside air is blown out from the ventilating side outlet 6 into the vehicle interior 3 and discharged outside through the openings of the left and right side windows 15, 15 to ventilate the vehicle interior 3. Will be In this case, the illuminance L
A predetermined amount H for opening the side window 15 based on the size of
1 and H2 are adjusted, and when the illuminance L is large, the temperature inside the vehicle T generally rises quickly. Therefore, by widening the side window 15, the ventilation inside the vehicle can be performed quickly.
In the vehicle 1 having the front and rear side windows 15 as shown in FIG. 2, it is preferable to control the rear side windows 15 to be opened from the viewpoint of air flow. 15 may be opened, but at least one side window 15 on the right side and one side window on the left side are opened.

Next, after the blower fan 10 is driven, the temperature comparing means 34 of the ventilation control means 31 compares the in-vehicle temperature T with the set stop temperature T2 (S · 12), and the in-vehicle temperature T becomes the set stop temperature T2. If the engine has stopped, it is determined whether the engine has stopped (S.13).
The voltage V of the solar cell 18 and the stop setting voltage V2 (10 volts)
And the voltage V and the upper stop setting voltage V3
(18 volts) (S.14). While the voltage V is lower than the lower stop set voltage V2 and lower than the upper stop voltage V3, the process returns to (S.7) to return to the illuminance L. The opening amount of the side window 15 is adjusted based on the above, and the same control is performed thereafter.

On the other hand, the voltage V of the solar cell 18, the lower stop set voltage V2 (10 volts), and the upper stop set voltage V3 (1
When the voltage V is lower than the lower stop set voltage V2 or higher than the upper stop set voltage V3, the blower fan 10 is stopped (S15), and the comparison (S14) is performed. Return to step 12). Further, even when the blower fan 10 is stopped (S · 15), the vehicle interior temperature T is maintained at the stop set temperature T.
If the engine is stopped (S · 13) at 2 or more (S · 12), the voltage V is determined to be the stop set voltage V by comparison (S · 14).
If it exceeds 2 and is lower than the upper stop set voltage V3, after the determination regarding the illuminance L (S.7) is performed, the blower fan 10 is driven again (S.11).

After the blower fan 10 is driven, the temperature comparing means 34 of the ventilation control means 31 compares the in-vehicle temperature T with the set stop temperature T2 (S.12). , The ventilation control means 31
Is stopped (S.16), and then the electric window 15A is driven to close the side window 15 (S.17).

As described above, also in the present embodiment, the motor 12 of the blower fan 10 is driven when the voltage V of the solar cell 18 is equal to or higher than the drive set voltage V1, and after the drive, the voltage V becomes the lower stop set voltage V
2 or less than the upper stop voltage V3, the motor 12 is stopped, and the lower stop set voltage V2 and the upper stop voltage V3
Since the motor 12 is controlled so as to be driven between the third embodiment and the third embodiment, the same operation and effect as those of the first embodiment can be obtained.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, voltages V1, V2, V3
Can be appropriately set within the gist of the present invention by a combination of a solar cell to be used and a motor connected to the solar cell. Further, the mounting position of the illuminance sensor can be appropriately selected. Furthermore, using the second set illuminance L2 (L2 <L1), when the illuminance L is equal to or less than the second set illuminance L2, the control may be performed so that the set temperature is T1 + Δt. Also,
The temperature sensor is not limited to the inside of the vehicle, and may be provided outside the vehicle. Further, by comparing the set illuminance of the large, medium and small lights with the illuminance L, the opening degree of the side window may be controlled to be large, medium and small.

[0042]

According to the first aspect of the present invention, there is provided an in-vehicle blower provided with a blower fan driven by a motor, a solar cell for converting sunlight into electric energy, and an output of the solar cell for driving the motor. Ventilation control means provided in the vehicle with ventilation control means to control the, the ventilation control means, the voltage of the solar cell connected to the motor, while driving the motor at a drive set voltage or more, The motor is controlled so as to stop at a lower stop set voltage lower than the drive set voltage or lower, and during parking, it is possible to suppress a rise in the temperature of the vehicle due to the ventilation inside the vehicle, and to efficiently use the motor of the vehicle ventilation device. A vehicle ventilator that can be driven well can be provided.

According to a second aspect of the present invention, the motor is stopped at an upper stop set voltage which is higher than the drive set voltage, and it is possible to suppress an increase in the temperature inside the vehicle due to ventilation in the vehicle during parking. Thus, it is possible to provide a vehicle ventilation device that can efficiently drive a motor of a vehicle ventilation device.

Furthermore, the invention according to claim 3 is characterized in that the lower stop set voltage and the upper stop set voltage are set above and below the output peak voltage of the solar cell. It is possible to provide a vehicle ventilator that can suppress a rise and efficiently drive a motor of an in-car ventilator.

[Brief description of the drawings]

FIG. 1 is a block diagram of ventilation control means showing a first embodiment of the present invention.

FIG. 2 is a side view of the vehicle showing the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the in-vehicle air blower according to the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a ventilation control unit according to the first embodiment of the present invention.

FIG. 5 is a block diagram related to an air-conditioning mode operation unit and an air outlet switching operation unit according to the first embodiment of the present invention.

FIG. 6 is a sectional view of a vehicle showing the first embodiment of the present invention.

FIG. 7 is a graph showing a relationship between an in-vehicle temperature and an air-conditioner cooling time according to the first embodiment of the present invention.

FIG. 8 is a graph showing current and output of the solar cell according to the first embodiment of the present invention.

FIG. 9 is a block diagram of ventilation control means according to a second embodiment of the present invention.

FIG. 10 is a sectional view of a side door according to a second embodiment of the present invention.

FIG. 11 is a block diagram of alarm control means according to a second embodiment of the present invention.

FIG. 12 is a flowchart illustrating the operation of ventilation control means according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 In-vehicle blower 3 In-vehicle 10 Blower fan 12 Motor 18 Solar cell 31 Ventilation control means V voltage V1 Drive set voltage V2 Lower stop set voltage V3 Upper stop set voltage

Claims (3)

[Claims] An in-vehicle blower having a blower fan driven by a motor, a solar cell for converting sunlight into electric energy, and ventilation control means for controlling the output of the solar cell to drive the motor. Is provided in the vehicle, the ventilation control means, the voltage of the solar cell connected to the motor, while driving the motor at a drive set voltage or more, the lower than the drive set voltage lower A vehicle ventilator, which controls the motor to stop at a stop set voltage or less. 2. The vehicle ventilator according to claim 1, wherein the motor is stopped at an upper stop set voltage higher than the drive set voltage. 3. The vehicle ventilator according to claim 2, wherein the lower stop set voltage and the upper stop set voltage are set above and below an output peak voltage of the solar cell.