JPS60226318A - Vehicle ventilating device - Google Patents

Abstract

PURPOSE:To ventilate the inside of a vehicle with the use of solar cells upon parking, by attaching the solar cells to the exterior of the vehicle such that the number of solar cells in series connection is changed in the intensity of the sun light, and electrical power from the solar cells is fed to a ventilating means. CONSTITUTION:Amorphous solar cells 21A through 21F of three cell series connection type, are connected in series for every three to obtain solar cell groups 21A-C, 21D-F which are connected to a motor 11 through a twin-type electromagnetic relay RL1. Further, an amorphous solar cell 22 of seven cell series connection type is connected to a coil in the twin-type electromagnet relay RL1 which is therefore energized by the output of the solar cell 22. This relay RL1 is energized when the voltage applied to the coil exceeds 3.5V. That is, when the intensity of the sun light is about 100W/m<2>, that is, it is low, the relay FL1 is not energized so that the solar cell groups are connected in parallel, and therefore no air is fed, but when it is 200W/m<2>, they are connected in series to feed air. With this arrangement, the solar cell may be effectively used to ventilate the inside of the vehicle during parking.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a vehicle ventilation system that ventilates the interior of a vehicle during parking by utilizing, for example, a solar cell installed in an air spoiler attached to the exterior of the vehicle.

BACKGROUND ART For example, when a vehicle is parked under the hot summer sun, it is desirable to continuously ventilate the interior of the vehicle using an air conditioning blower while the vehicle is parked in order to prevent the interior of the vehicle from becoming too hot. In this case, if an on-vehicle battery is used as a power source for the air conditioning blower, there is a risk of overdischarge of the battery, so it is desirable to use a solar battery.

In this case, in order to effectively utilize the output of solar cells,
The setting should be such that the ventilation system can be operated near the maximum efficiency point of the solar cell output, and -i should be set so that the ventilation system can be operated near the maximum efficiency point when the solar cells produce maximum output under the scorching sun. Set. However, when the sun becomes thinner and the output of the solar cells decreases, the maximum efficiency point of the solar cells and the operating point of the ventilation system differ, making it impossible to operate at the maximum efficiency point by effectively utilizing the solar cell output. There is a problem.

Furthermore, when ventilation is not required in the vehicle interior even when the vehicle is parked, there is no need to use solar cells as a power source for the air conditioning blower, and in this case as well, there is a problem that the solar cell output is not used effectively. .

OBJECTS OF THE INVENTION In view of the above-mentioned problems, one object of the present invention is to make it possible to more effectively utilize the output of a solar cell installed in a vehicle for powering a ventilation system in ventilation of a vehicle interior when parking. There is a particular thing. Another object of the present invention is to enable the output of the solar cell to be effectively used for battery charging even when ventilation inside the vehicle is not required.

Structure of the Invention In one form, the present invention includes a ventilation means for ventilating the interior of a vehicle, a plurality of solar cells attached to the exterior of the vehicle, a detection means for detecting sunlight intensity, and the detection. A ventilation system for a vehicle is provided which includes a switching means for supplying power to the ventilation means by switching the number of solar cells connected in series according to the sunlight intensity detected by the means.

In addition, in the present invention, as another form, a ventilation means for ventilating the interior of a vehicle, a plurality of solar cells attached to the exterior of the vehicle, a detection means for detecting sunlight intensity, and a a switching means for supplying power to the ventilation means by switching the number of cells connected in series of the solar cells according to the intensity of sunlight; A ventilation system for a vehicle is provided that includes a charging switching means for charging a battery.

EXAMPLE A circuit diagram of a vehicle ventilation system as an example of one embodiment of the present invention is shown in FIG. Further, the manner in which the vehicle ventilation system is attached to a vehicle is shown in FIGS. 2 and 3.

The vehicle ventilation system shown in FIG. 1 includes a blower motor 11 of a vehicle air conditioner 10 (FIG. 2), six solar cells 21A to 21F as a power source for the blower motor 11, a solar cell 22 for detecting sunlight intensity, Electromagnetic relay 1? Control circuit consisting of LI
Equipped with ll31. The solar cells 21A to 21F, 22 and the control circuit 31 are incorporated into a rear air spoiler 40 attached to the rear end of the automobile trunk lid shown in FIG.

The vehicle air conditioner 10 is of a conventionally known type,
As shown in FIG. 2, the blower motor 11, outside air intake 12, duct 13, blower 14, heat exchanger 15, outlet 16, and other devices not shown in the rear air spoiler 40 part of FIG. is shown in detail in the partially cutaway perspective view of FIG. In FIG. 3, the rear air spoiler 40 has a window formed on the surface of a horizontally long wing-shaped main body 41 made of a strong resin such as dense urethane and having a substantially draft-shaped cross section. It has a structure in which batteries 21 and 22 are fixed and a control circuit 31 is housed inside the main body 41.

That is, the main body 41 is attached to the vehicle body by connecting the portion 42 with the screw 43.
It is attached by being fixed to the trunk lid 44 with a screw. For solar cells 218 to 21F and 22, after housing the battery body 20 in the holder 45, attach it to the body 41 with screws 46.
It is fixed to a window portion formed on the upper surface 47 of. Control circuit 3
1 is fixed inside the main body 41. Solar cells 21/1~
The output lines 51 of 21F and 22 are converged into a control circuit 31, and the output line 52 of the control circuit 31 is connected to the air conditioning pro-ar motor 11 via a grommet 48 fitted into a hole in the trunk lid.

In FIG. 1, solar cells 218 to 21F each have 3
The solar cell 22 is an amorphous solar cell with a cell series connection configuration, and the solar cell 22 is an amorphous solar cell with a cell series connection configuration. Three solar cells 21 are connected in parallel and 2
A set of solar cell groups 21A-C.

210-F wo configuration site. Solar cell group 21A-C,
210-F is connected to supply power to the motor 11 through the two contacts of the double electromagnetic relay RLI, and when the relay RLI is inactive, the solar cell group 21A-C
.

210-F are connected in parallel to each other, while when relay RLI is activated, both are connected to motor 11 in series connection.

The output characteristics of the solar cells 218 to 21F are the fourth. This will be explained below with reference to FIG. Figure 4 shows a solar cell group 21.
The output characteristics when 11-C and 210-F are connected in parallel are shown, and the output characteristics when they are connected in series are shown in FIG. In Figures 4 and 5, the vertical axis represents current I (ampere), and the horizontal axis represents voltage V (volts). The solar cell output characteristics are shown as a solid line using sunlight intensity as a parameter, and sunlight intensity is 200, 300, 400,
The cases of 600, 800, and 1000 wisdom/i are shown.

a4, a5, a6 in Fig. 4, bi in Fig. 5.

b2. ...b3 is the highest efficiency point of each solar cell.

Since the highest efficiency is achieved when the output is approximately 0.5 V per amorphous solar cell, the fourth
In the case of the figure, the highest efficiency point is around 1.5V, and in the case of Figure 5, where 6 cells are connected in series, it is around 3.5V. The highest efficiency point is near OV. In addition, in FIGS. 4 and 5, the operating characteristics of the motor 11 are shown by broken lines.

Next, the output of the solar cell 22 is directly connected to the coil of the relay RLI, and the output of the solar cell 22 operates the relay RLI. The relay 11LI has a characteristic that it operates when the voltage applied to the coil becomes 3.5V or more, and becomes non-operational when the voltage applied to the coil drops to 2.3V or less.

FIG. 6 shows the output characteristics of the solar cell 22 and the power consumption characteristics of the relay RLI. In Figure 6, the vertical axis is current! (ampere), the horizontal axis shows the voltage (volts). The solar cell output characteristic is shown by a solid line using sunlight intensity as a parameter, as in FIGS. 4 and 5, and as can be seen from this characteristic, the output current changes depending on the sunlight intensity and the generated voltage. The characteristic of applied voltage versus current flowing through the coil of relay RLI is shown by a broken line.

As is clear from Figure 6, the sunlight intensity is 600w/r.
When the temperature exceeds rr (point D), relay R is activated from the solar cell 22.
Since the voltage applied to coil 2 of LI exceeds 3.5V, relay RLI is activated. -Relay R activated
LI is when the sunlight intensity is less than 300/rd (point E),
That is, when the output voltage of the solar cell 22 becomes 2.3V or less, it becomes inoperable. In this way, the voltage at the operating point is 3.5V
On the other hand, since the solar cell 22 has a 7-cell series connection configuration, the highest efficiency power generation is performed at approximately 3.5V. Therefore, by matching the number of moles connected in series and the relay operating voltage as in this embodiment, the relay RLI can be operated with the smallest solar cell.

The operation of the embodiment apparatus of FIG. 1 will now be described.

First, when the sunlight intensity is weak, for example about 100 W/RL, the voltage applied to the coil of the relay RLI by the solar cell 22 is at point D (3.5 V), as can be understood from FIG. ), so relay RLI is inactive. Therefore, solar cell groups 21A-C.

210-F are connected in parallel and supply power to the blower motor 11 with the output characteristics shown in FIG. 4, but as is clear from FIG. 4, the blower motor 11 is in a stopped state below the zero point. Sunlight intensity is 1001m/c
In d, the blower motor 11 does not operate and does not blow air.

Next, when the sunlight intensity increases to 200 y/rd, the blower motor 11 operates and starts blowing air, and the operating point at this time is A6. Furthermore, the sunlight intensity increases to 300W
/nr, 400w/n (Then, the operating point moves to A5 and A4, respectively, and the blower increases the air flow.

When the sunlight intensity further increases to 600 y/rd, the voltage applied to the coil of relay RLI exceeds 3.5V, so relay RLI is activated and solar cell groups 21A-C are activated.

210-F are connected in series, and power is supplied to the blower motor 11 with the output characteristics shown in FIG. At this time, the operating point of the blower motor 11 becomes B3 in FIG. 5, and the amount of air blown further increases. When the sunlight intensity is 8.00w/rd, the operating point is B2.When the sunlight intensity is 1000w/rd, it is B1, and the air flow rate increases further. When the sunlight intensity decreases, the operating points are Bl +, B2, B3, B4
Then, at sunlight intensity of 300 & 4/rd, it moves to A5 in Fig. 4, then moves to A6, and stops.

In the above explanation of the operation, the following points should be noted. That is, the operating points Bl and B2 of the blower motor 11.

B3 is the highest efficiency point bl and B of the solar cell output, respectively.
2.

Very close to B3, and the operating points A4, A5, A6
are very close to the maximum efficiency points a4, B5, and B6, respectively, so according to the device of this embodiment, the output of the solar cell 21 is always effectively used near the maximum efficiency points even when the sunlight intensity changes, and the blower blows air. It means being able to do the following.

To explain this in more detail, for example, the solar cell group 21A
-C, 210-F fixedly connected in series, that is, in the case of the characteristics shown in Fig. 5, the sunlight intensity 3
The blower cannot blow air below 00h/rd, and the
Although it is possible to blow air with -1, it is clear that the efficiency is poor. On the other hand, solar cell groups 21A-C.

210-F are fixedly connected in parallel, that is, the fourth
In the case shown in the figure, even when the sunlight intensity exceeds 600 y/rd, the amount of air blown does not increase much, and it is clear that the battery output is not used efficiently.

The required total output of solar cells and the number of cells connected in series in order to effectively ventilate the vehicle interior when the vehicle is parked will be explained below. First, the power required for the air conditioning blower motor that is driven during normal vehicle operation is 12
The V rating is 100-140-1 and the required current is about 8-12A.

On the other hand, research by the present inventors has revealed the following. That is, using the above air conditioning blower, under the scorching summer sun, for example, when the sunlight intensity is 1000 w/r
In order to suppress the temperature rise inside the vehicle when the vehicle is parked when the vehicle is parked at about It will be done. Further increase the power by 6 to 1 OW (applied voltage 3.5
〜4.5ν), 10 to 16 W (4.5 to 5.5 V), the effect becomes even greater as the power increases, but even if power of 16 W or more is supplied, the effect is still large. I don't expect much improvement. Note that the values of the above-mentioned supplied power (W) and applied voltage (V) are approximately the same values for any type of passenger car.

In the device of this embodiment, the total output of the solar cells 218 to 21F is 5.5 W when the sunlight intensity is 1000 W/rd. This is determined by the area of the outer surface of the spoiler, therefore the area of the solar cells to be attached, and the power generation efficiency of the solar cells. When the solar cell output is 5.5W, the voltage to be applied to the blower motor 11 is about 3V as described above.

Approximately 3■ For a solar cell to generate electricity at its highest efficiency point during output,
It is best to connect 6 cells in series.

The reason for this is that amorphous silicon solar cells reach their highest efficiency at a specific output of about 0.5V per cell. This also applies to single-crystal silicon solar cells, polycrystal silicon solar cells, and the like.

As mentioned above, when the sunlight is weak, it is better to divide the 6 cells into 2 and connect 3 cells in series.

If the total output of the solar cells is 6 to 10W, the voltage to be applied to the blower motor I is about 4V, and it is preferable to connect 8 cells (or 9 cells) in series in the case of strong sunlight, and 4V in the case of weak sunlight. Cells (or three cells) may be connected in series. Further, if the total output is 10 to 16 W, a voltage of about 5y is similarly required, and it is preferable to connect 10 cells in series, and it is sufficient to connect 5 cells in series when sunlight is bright. The above results are tabulated as shown below.

As shown in the table, the number of -C connected cells is determined based on the total output of the solar cells, and the number of cells connected in series during daylight hours is determined by 2.
By dividing and connecting them in parallel, it becomes possible to efficiently use the output of the solar cells to blow air.

Regarding the optimal value of sunlight intensity for switching the number of solar cells connected in series, in this example, the switching point between parallel and series was set to 600 w/m of sunlight intensity.
As is clear from comparing Figure 5, 500~600w
/I+(). For example, if you switch when the sunlight intensity is 400 W/m, the operating point will shift from Δ4 to 134, and the air flow rate will decrease.

This trend shows that the total output of solar cells is 6 to IOW or l
The same applies even when the power is 0 to 16 W, and it is most preferable to set the switching point to 500 to 600 w/rtf.

As explained above, in this example device, the number of connected solar cells can be switched between 3 cells in series and 6 cells in series depending on the sunlight intensity, thereby effectively utilizing the solar cell output to control air conditioning. You can use a commercial blower to blow air. As a result, when the automobile is parked in the hot summer sun, the temperature inside the vehicle can be effectively suppressed. Also, switching between light sunlight and strong sunlight can be done by using solar cell 22 and relay 1. This can be easily performed using L1.

Furthermore, in the device of this embodiment, existing devices that have been used in the past can be used as they are for the blower, motor, air passage, etc., so the cost of the device can be reduced. It is also possible to install a dedicated blower, motor, and air passage, but changing the structure of the vehicle body or drilling holes is labor-intensive.
Furthermore, in view of the rising price due to the increase in the number of parts, it is desirable to use existing equipment.

Furthermore, in this example device, by integrating the solar cells and the control circuit into the air spoiler, the air spoiler can be installed only once without changing the car body structure, and the air spoiler can improve aerodynamic characteristics and the solar cells can be used to ventilate the vehicle interior when parking. You can get multiple functions.

Various modifications are possible in implementing the vehicle ventilation system of the present invention. For example, the total output of solar cells is approximately 10W.
A circuit diagram of another embodiment of the device is shown in FIG.

In FIG. 7, six solar cells 238 to 23F constitute. Each solar cell group 23All, 23CI),
The output line from 23HF' is a quadruple electromagnetic relay R1,
The solar cell groups 23AB, 23CI3, and 23EF are connected in parallel to each other when relays R1 and R2 are not activated. Also, when relay 2 is activated, they are connected in series to supply power to the floor motor. Note that the other components are the same as those of the embodiment shown in FIG.

To explain the operation of this embodiment device, when the sunlight is weak, relays R1 and R2 do not operate, so the solar cell group 23A
B, 23CD, and 23HF are connected in parallel to form a 3-cell series connection. On the other hand, when the sunlight is strong, relay 1? +
, 2 are activated, and solar cell groups 23^B, 23CD, 2
The 3RPs are connected in series, resulting in 9 cells connected in series. Other operations and effects are similar to those of the apparatus of the embodiment shown in FIG. 1, but according to the apparatus of this embodiment, the blower starts blowing air when sunlight is weaker, so that blowing air is more powerful under the scorching sun.

FIG. 8 shows a circuit diagram of another embodiment in which the sunlight intensity for switching the number of connected solar cells is set at two points to achieve more detailed control. In FIG. 8, four solar cells 24A to 24D each have a 2-cell series connection configuration, and the total output is about 8W. 4 solar cells 2
48 to 241] supply power to the pro-armotor 11 through the contacts of the quadruple relay RL2 and the double relay RLI, and when both relays RLI and RL2 are inactive, the four solar cells 24 ^~ When 24D are connected in parallel and only relay +1LI is activated, solar cells 248 and 24B, and solar cells 24G and 24
0 are connected in parallel and then connected in series, and when relays +1Ll and RL2 are both activated, solar cells 248 to 24D are connected in series to the floor motor 11.

The solar cell 28) and the resistor 5 generate a voltage Vv depending on the intensity of sunlight. +JL--Rt, 1 operating circuit includes a voltage dividing resistor R1, which generates a predetermined reference voltage Vr+;
R2, a comparator Q1 that compares the output voltage 7 of the solar cell 25 and the voltage rI, which is turned on by the comparator Q1.

It consists of a transistor T1 that is turned off and a diode D1 for IF to prevent back electromotive force generation. The operating circuit of relay RL2 has the same configuration, and the voltage dividing resistance of the reference voltage ■1 and 2 generation river! 1
It consists of iR3, R4, comparator Q2, t transistor T2, and diode D2. Note that the relay P port and RL2 are operated by being supplied with electric power from the vehicle-mounted battery 6°, unlike the previous embodiment.

The operation of this embodiment device will be explained below. solar cell 25
The sunlight intensity is detected by zl. The output of the solar cell 25 is converted into a detection voltage by a resistor R5, and is supplied to one input terminal of the comparator Q1, respectively.
When the detection voltage V is higher than the reference voltage Vrl from the voltage dividing resistors R1 and R2, an output of 1-1" level is applied to the base of the transistor TI, and the transistor 1 is Turn it on and apply voltage from the battery 60 to the coil of relay RLI to activate relay RLI.

At this time, the values of the voltage dividing resistors R1 and R2 are the reference voltage Vr
Detection voltage when 1 is sunlight intensity 300%l/%■,
is selected to be equal to

In the case of comparator Q2, relays R1 and R2 are activated in the same way, but the values of voltage dividing resistors R3 and R4 are set so that the values of voltage dividing resistors R3 and R4 are equal to the detection voltage 8 when the reference voltage Vr2 is 600 w/% sunlight intensity. selected. Therefore, the sunlight intensity is 3
Below 00y/rd, relays R1-, 1, and RL2 are inactive, and the solar cells are connected in series with 2 cells, and the sunlight intensity is 300 to 600 w/n? So relay
RLI is activated, relays R1 and R2 are deactivated, 4 cells are connected in series, and the sunlight intensity is 600w/n? In this case, relays RLI and RL2 are activated and 8 cells are connected in series.

In this way, according to the device of this embodiment, even more fine-grained switching control is possible. That is, since the cell connection can be switched in three stages, the operation of the driver near the binding efficiency point of the solar cell output can be performed more accurately. In addition, since the comparator 02 is used, it becomes possible to perform switching based on sunlight intensity more precisely. Other operations and effects are similar to those of the two embodiments described above. In addition, in this embodiment device, relays R1,,1,I?
L2 is operated by power supplied from the battery [i0, but it is also possible to replace this with a dedicated solar cell, for example.

FIG. 9 shows the circuits of yet another embodiment of the apparatus. This embodiment of the device detects the activation force generation state of the solar cell every time the voltage applied to the blower motor 11 is observed, and thereby switches the cell connection according to the intensity of sunlight.

The basic configuration of this embodiment device is similar to that of the device shown in FIG. 1, but the circuit for operating relay RL'l is different. That is, instead of the solar cell 22 in FIG.
4,1 operation control section 7o is provided, and the control section 70
A storage section 71 in which the voltage applied to the blower motor is manually input, an upper shaft section 72 that compares data in the storage section 71, and a drive section 73 that operates the relay RLI in accordance with the output of the comparison section 72.
, is provided with a timer section 74 that switches the relay between activation and deactivation at appropriate time intervals.

The operation of this embodiment device will be explained below. Timer section 74
Accordingly, the relay RLI is forcibly activated by the drive unit 73 at appropriate time intervals, for example, every minute. The applied voltage to the blower motor 11 changes due to the activation of the relay RLI, but the applied voltage before the relay RLI is activated is stored in the storage unit 7.
1.

A comparator 72 compares the applied voltage value before switching stored in the storage section 71 and the applied voltage after switching input via the human power line 75 . As a result of the comparison, if the voltage value after switching is high, relay RLI is maintained as it is, and if it is low, it is immediately returned to non-operation.

- = On the other hand, after relays R1 and 1 are activated, relay RLI is deactivated at appropriate time intervals, and the input voltages before and after switching are compared in the same manner as above, and the switching state of the relay is determined depending on the higher input voltage. maintain. By doing this, ゛Roroa 111 can always use the output of the easy-to-use battery with high efficiency.

According to the device of this embodiment, the blower motor 11 and the solar cell 2
1 or the performance variations of the solar cells 22 in the apparatus of the embodiment shown in FIG. 1, stable feed hack control is always possible.

In a vehicle ventilation system according to another embodiment of the present invention, a control circuit 35 and a triple electromagnetic relay RL are used.
3. It is composed of diodes D3 to D5. The switch box 80 is composed of six manual switches 81, and is installed near the driver's seat of the automobile as shown in FIG. The manual switch 81 is used to connect the solar cell to the blower motor 11 or to the battery 60, depending on whether the manual switch 81 is switched to the ``vehicle ventilation'' or the battery charge mode. The structure of the solar cell 22 is the same as that of the embodiment shown in FIG.

The solar cells 268 to 26F each have five cells connected in series, and the total output is about 12W.

The operation of this embodiment device will be explained below. When the movable contact of the main switch 81 is switched to the solid line side, the vehicle interior is ventilated, and the outputs of the solar cells 26^ to 26F are supplied to the blower motor 11.

At this time, as in the device shown in FIG. 1, the solar cell 22 and the relay 11LI are connected to
All cells 8 to 26F are connected in parallel to each other to form a 5-cell series connection. When the sunlight is strong, solar cells 26^ and 261
After 26C and 26D and 26E and 26F are connected in series, each series-connected set is mutually connected in parallel, so that the solar cell has 10 cells connected in series.

Therefore, as described above, the output of the solar cell can always be used efficiently depending on the intensity of sunlight.

When the movable contact of manual switch 81 is on the dotted line side, it is in the battery charging mode, and regardless of whether relay RL3 is activated, solar cells 268 to 26F are all connected in series and charging battery 60-\. Provides power supply. At this time, 30 cells are connected in series, and the highest efficiency point is 1.
The voltage is around 5 V, allowing efficient battery charging.

Regarding the number of cells connected in series for battery charging, if 26 cells or more are connected in series, it is possible to charge efficiently even in moonlight.On the other hand, if 34 cells or more are connected in series, the charging voltage becomes too high, so if Research by the present inventors has revealed that, depending on the situation, the battery 60 may not be adversely affected. Therefore, it is desirable to use 26 to 34 cells connected in series for battery charging.

In addition, in the embodiment device of FIG. 10, the relay R
Although the solar cell 22 is used as a means for operating L3, as an alternative means, the control section 7 shown in FIG.
It is also possible to use 0.

In each of the embodiments described above, the part of the vehicle from which the solar cells can be removed is the air spoiler 40.
Although only the case where the spoiler is outside has been explained, for example, as shown in Fig. 2, the front air spoiler 40' installed on the hood in front of the windshield, or the rear end of the roof of the passenger compartment. It is also possible to use the attached leaf air spoiler 40'', etc., and it is also possible to attach it to other parts such as the roof of the vehicle. Well-known methods may be used.

Moreover, although the description has been made using an amorphous silicon solar cell as the solar cell, other types of solar cells such as a single crystal silicon solar cell and a polycrystalline silicon solar cell may be used. Furthermore, regarding the method of switching the series-parallel connection of the solar cells, in addition to the electromagnetic relay used in the above embodiment, other conventionally known methods may be used, such as non-contact switching methods such as transistors. .

Effects of the Invention According to the present invention, the output of the solar cell installed in the vehicle for powering the ventilation system can be used more effectively for ventilation of the vehicle interior during parking. Furthermore, even when ventilation of the interior of the room is not required, the output of the solar cell can be effectively used for battery charging.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a vehicle ventilation system according to one embodiment of the present invention, FIG. 2 is a diagram showing the installation part of the device shown in FIG. 1 to a vehicle, and FIG. Figure 2 shows the mounting condition of the vehicle ventilation system in the rear air spoiler part. Characteristic diagrams showing the operating characteristics, Figure 6 is a characteristic diagram showing the output characteristics of the solar cell for sunlight intensity detection and relay power consumption characteristics, Figures 7 and 8
9 and 9 are respectively circuit diagrams of another embodiment of the vehicle ventilation system of the present invention, and FIG. 10 is an embodiment of the vehicle ventilation system of the present invention. Fig. 11 shows the installation parts of the switch box of the device shown in Fig. 10 in a vehicle. 1. Blower morph, 218-21F", 22.24A-24D, 25.21
8~21F, 268~26F... Solar cell, 3L32, 3.3, 34.35... Control circuit, 40.
40', 40''...air spoiler, k!Ll
, RL2.1lLX (...relay, 80...switch box. Patent applicant: Japan Automotive Parts Research Institute Co., Ltd. Nippon Denso Co., Ltd. Patent application agent: Akira Aoki, patent attorney: Kazuyuki Nishidate, patent attorney: Takao Kobayashi Patent Attorney Akira Yamaguchi Patent Attorney Masaya Nishiyama Part 1 Figure Sunlight 2 Figure Section 3 @ Process 4 Figure Pigeon 5 Figure v - Ichika Price 7 Figure 32 Moth 8 "jl Continuation of Sunlight 1st page @ Inventor Hideaki Sasaya [Partner] Inventor Takao Oshiro

Claims (1)

[Claims] 1. Ventilation means for ventilating the interior of the vehicle, a plurality of solar cells attached to the exterior of the vehicle, a detection means for detecting the intensity of sunlight, and a solar cell detected by the detection means A ventilation system for a vehicle, comprising a switching means for supplying power to the ventilation means by switching the number of solar cells connected in series according to sunlight intensity. 2. The device according to claim 1, wherein the number of solar cells connected in series is gradually increased when the sunlight intensity detected by the detection means exceeds one or two predetermined values. . 3. When the sunlight intensity detected by the detection means exceeds one predetermined value, the number of solar cells connected in series is reduced to 2.
The device according to claim 2, characterized in that the device is doubled or tripled. 4. The device according to claim 3, wherein one predetermined value of sunlight intensity detected by the detection means is a value between 500 and 600 w/r/. 5. Claims 3 or 4, characterized in that the number of cells connected in series during weak light and the number of cells connected in series during strong light are selected according to the total output of the solar cell.
Apparatus described in section. 6. Claim 1, characterized in that the detection means is a solar cell, the switching means is an electromagnetic relay, and the output of the detection solar cell is directly applied to the coil of the electromagnetic relay. The device according to any one of items 5 to 5. 7. The device according to claim 6, wherein the detection solar cell and the electromagnetic relay are integrally attached to an air spoiler of a vehicle. 8. The detection means operates the switching means at predetermined time intervals, detects the voltage applied to the blower motor of the ventilation means, compares the applied voltage before and after switching, and selects the one with the higher applied voltage. 2. The device according to claim 1, wherein the device controls the switching state of the switching means. 9. 9. The device according to claim 1, wherein the solar cell, the detection means, and the switching means are integrally attached to an air spoiler attached to the outer surface of the vehicle body. 10. Ventilation means for ventilating the interior of the vehicle; a plurality of solar cells attached to the exterior of the vehicle; a detection means for detecting sunlight intensity; A switching means that switches the number of battery cells connected in series to supply power to the ventilation means, and a charging switching means that switches the power supply from the solar cell from the ventilation means to the vehicle pantry to charge the vehicle battery. Ventilation system for vehicles equipped with 11. The device according to claim 10, wherein the number of cells connected in series during battery charging by switching the charging switching means is 26 to 34 cells connected in series. 12. The device according to claim 11, wherein the number of cells connected in series during battery charging is three times the number of cells connected in series during strong light. 13. The device according to claim 12, wherein the charging switching means is comprised of a manual switch, or a manual switch and a diode. 14. Claims 10 to 13, characterized in that the solar cell, the detection means, and the switching means are integrally attached to an air spoiler attached to the outer surface of the vehicle body.
Equipment described in any of the paragraphs.