JPH0712090Y2 - Ventilation system with solar cells - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a ventilation device for ventilating a vehicle compartment by rotating a fan by the output of a solar cell attached to a vehicle body.

(Prior Art) Conventionally, for example, in Japanese Patent Publication No. 59-51451, a solar cell that receives sunlight to generate electric power is attached to the outer surface of a vehicle body, and a fan is output by the output of the solar cell. The concept of rotating the vehicle to ventilate the vehicle interior is disclosed.

(Problems to be solved by the invention) By the way, in this conventional device, since the fan for ventilation is driven by the solar cell, even if the engine of the vehicle is stopped and the generator is in the non-power generation state, it automatically operates. Ventilation can be performed by driving a fan. Therefore, for example, even when the vehicle is parked in the hot sun in summer, hot air in the passenger compartment is discharged and outside air is sucked into the passenger compartment to suppress the temperature rise in the passenger compartment and eliminate discomfort during riding. Is possible.

However, in reality, sunlight may hit around the ventilation inlet of the vehicle body due to a change in the direction of the solar radiation of the vehicle body. In that case, the high temperature air around the outer surface of the vehicle body, which is heated by the solar radiation of the sun, is sucked into the vehicle interior, and the ventilation efficiency in the vehicle interior may be reduced, and the temperature may not be effectively reduced. .

The present invention has been made in view of the above points, and an object thereof is to provide means for exhausting air at an uncomfortable temperature in the vehicle interior and inhaling outside air at a comfortable temperature into the vehicle interior regardless of the direction of sunlight. The purpose of the present invention is to efficiently ventilate the interior of the vehicle by the solar cells even when the vehicle is parked in the hot summer weather so that an uncomfortable temperature change in the vehicle can be effectively suppressed.

(Means for Solving the Problem) To achieve this object, the solution means of the present invention detects the solar radiation direction of the sun and, depending on the solar radiation direction, locates on the sunlit side in the passenger compartment, for example, in the summer hot weather. The fan is driven so that the air to be discharged is discharged to the outside of the vehicle and the outside air on the shaded side is sucked into the vehicle interior.

Specifically, the configuration of the present invention includes a solar cell mounted on a vehicle body and one end of each of which is opened to the vehicle interior through an indoor opening, while the other end is exposed to the outside of the vehicle through an outdoor opening. And a plurality of communication passages formed so as to communicate with the outside of the vehicle interior of the vehicle interior, and the interior-side openings and the exterior-side openings are separated from each other in the vehicle body wall portion around the compartment. , A fan provided in each of the communication passages, capable of rotating in the forward and reverse directions by receiving the output of the solar cell, sucking the air outside the vehicle into the vehicle interior or discharging the air inside the vehicle out of the vehicle, and the direction of solar radiation to the vehicle body. And a communication passage located on the shade side so that intake / exhaust of air to / from the vehicle compartment is different from each other according to the output of the sunlight direction detection means. And a control means for controlling the operation of the fan Obtain.

(Operation) With the above configuration, in the present invention, the solar cells mounted on the vehicle body drive the fans in the middle of the plurality of communication paths,
Due to the drive rotation of the fan, the air outside the vehicle is sucked into the vehicle interior or the air inside the vehicle interior is discharged to the outside of the vehicle, and the air inside the vehicle interior is ventilated through the communication passage.

In that case, since the plurality of communication passages are formed in a state in which the indoor-side openings and the outdoor-side openings are separated from each other, even if the direction of insolation with respect to the vehicle body changes, the one communication passage is formed. The indoor side opening and the outdoor side opening are located on the sunlit side, and the indoor side opening and the outdoor side opening of the other communication passage are located on the shade side. Then, the solar radiation direction with respect to the vehicle body is detected by the solar radiation direction detecting means, and the control means that inputs the output of this detecting means controls the air flow in the passenger compartment between the sunlit side communication path and the shaded side communication path. The operation of the fan is controlled so that the intake and the exhaust are different from each other. For example, in the summer,
In order for the fan in the communicating passage corresponding to the shade side to suck the outside air on the shade side into the vehicle interior, and for the fan in the communicating passage corresponding to the shade side to discharge the air in the vehicle interior on the shade side to the outside of the vehicle. Each is controlled in operation. Therefore, relatively cool outside air on the shade side is sucked into the vehicle compartment, and air inside the vehicle compartment on the sunlit side whose temperature has risen is discharged to the outside of the vehicle, and the flow of this air can effectively suppress the temperature rise inside the vehicle compartment. become.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a car body, 2 is a passenger compartment formed in the car body 1, and the roof 1a of the car body 1 is
A large number of solar cells 3, 3, ... Which receive sunlight and generate electric power are attached.

Further, a right-side communication passage 4 that extends in the up-down direction and communicates with the outside of the vehicle interior 2 is formed through the inside of the right-side center pillar 1b of the vehicle body 1, and the interior side opening 4a of the communication passage 4 is inside the vehicle interior 2. On the upper right side of the vehicle, and the outdoor side opening 4b is opened to the outside of the vehicle body at the lower end of the right side surface of the vehicle body 1. Further, in the communication passage 4, a right and left fan 5 capable of rotating in the forward direction and the reverse direction, which receives the output of the solar cells 3, 3, ... Is disposed near the outdoor opening 4b. Also, the indoor side opening of the communication passage 4
As shown in enlarged detail in FIG. 4, an inclined fin 6 that is inclined forward (upward) toward the inside (left side in the figure) of the vehicle compartment 2 is attached to 4a.

On the other hand, similarly, in the left center pillar 1c of the vehicle body 1 which is distant from the right side communication passage 4 in the left-right direction of the vehicle body, a left side communication passage 7 that communicates with the inside and outside of the vehicle compartment 2 is formed so as to penetrate therethrough. The opening 7a is located on the upper left side in the passenger compartment 2, and also on the outdoor side.
7b are open to the outside of the vehicle body at the lower ends of the left side surfaces of the vehicle body 1. In the communication passage 7, a left and right fan 8 capable of rotating in response to the output of the solar cells 3, 3, ... Is disposed in the vicinity of the outdoor side opening 7b, and the indoor opening of the communication passage 7 is provided.
An inclined fin (not shown) that is inclined rearward toward the inside of the vehicle compartment 2 is attached to the 7a.

FIG. 5 shows a circuit configuration of a control system for controlling the operation of the left and right fans 5,8. The drive motors 5a, 8a of the fans 5,8 are parallel to the solar cells 3,3, ... It is connected so that it has the polarity of. Also, drive motor 5 for both fans 5,8
The circuit 10 that connects the solar cells a, 8a and the solar cells 3, 3, ... Includes a keyless switch 11 that detects when an occupant is away from the vehicle (parking state) and conducts the circuit, and a polarity conversion switching relay 12
2 of the changeover switches 12a, 12b are provided, and the drive motors 5a, 8b are driven by the changeover operations of the changeover switches 12a, 12b.
a, that is, the fan 5 (or 8) during exhaust operation that reverses the rotation direction of the fans 5 and 8 that determine the flow direction of the air flowing through the communication passages 4 and 7 and discharges the air inside the passenger compartment 2 to the outside of the vehicle The intake operation is performed so that the outside air outside the vehicle is drawn into the vehicle interior 2, and the fan 8 (or 5) during the intake operation is switched to the exhaust operation.

The solenoid 12c of the relay 12 is a controller with a built-in CPU
13 connected to the controller 13 to the solenoid 12
When a switching signal (excitation signal) is output to c, switches 12a, 1
2b is switched. The output signals of the left and right solar radiation sensors 14 and 15 for detecting the amount of solar radiation are input to the controller 13, and the left and right solar radiation sensors 14 and 15 are respectively connected to the rear pillars 1d on the left and right sides of the vehicle body 1 as shown in FIG. It is installed near 1e.

The signal processing in the controller 13 is performed according to the flow shown in FIG. That is, in step S ₁ after the start, the left and right insolation sensors 14 and 15 detect the insolation amount, respectively, and in the next step S ₂ , the left and right insolation sensors 14 and 15 are compared in output amount (insolation amount). To do. Therefore, in this embodiment, the solar radiation direction detecting means 16 is adapted to detect the solar radiation direction with respect to the left and right sides of the vehicle body 1 by steps S ₁ and S ₂ of the processing procedure in the both solar radiation sensors 14 and 15 and the controller 13. Is configured.

When YES is determined in step S _{2 where} the right side solar radiation amount is greater than or equal to the left side solar radiation amount, the sun s is located on the right side of the vehicle body 1 as shown in FIGS. 1 on the right side is regarded as the left side in the sun is in the shade, the process proceeds to step S _3, whereas for exhaust operation the right fan 5,
The left fan 8 is operated for intake air, and then the process returns to step S ₁ .

On the other hand, when the amount of solar radiation right is determined to less NO than the insolation left in step S _2, the sun s is located to the left of the vehicle body 1, the left side of the vehicle body 1 to shade the right in the sun going on when regarded, the process proceeds to step S _4, the changeover switch 12a by energizing the solenoid 12c of the switching relay 12, 12b
And in the next step S ₅ , the right side fan 5 is operated for intake while the left side fan 8 is operated for exhaust.
Then, it returns to step S ₁ .

Therefore, the above steps S ₃ to S _5, in accordance with the output of the solar radiation direction detecting unit 16, de communicating passage 4 located in the sun side (or 7) and communicating passage 7 that is located in the shade side (or 4) The intake and discharge of air to and from the passenger compartment 2 are different from each other, and the outside air on the shade side is sucked into the passenger compartment 2 via the communication passage 7 (or 4) and the air on the sunlit side in the passenger compartment 2 is connected to the communication passage 4 ( Alternatively, the control means 17 for controlling the operation of the fans 5 and 8 is configured to be discharged to the outside of the vehicle via 7).

Therefore, in the above embodiment, when the vehicle is parked outdoors, etc., when the sunlight from the sun s is applied to the solar cells 3, 3, ... Attached to the roof 1a of the vehicle body 1,
Electric power is generated in the solar cells 3, 3, ..., The fans 5 and 8 in the communication passages 4 and 7 are driven by the electric power, and the air in the passenger compartment 2 is ventilated through the communication passages 4 and 7. .

That is, the insolation direction with respect to the vehicle body 1 is detected by the difference in the insolation amount on the left and right sides of the vehicle body 1 detected by the left and right insolation sensors 14, 15, and the insolation direction of the vehicle body 1 is, for example, as shown in FIGS. 2 and 3. When the right side is in the sun and the right side is in the shade, and the left side is in the shade, the fan 8 of the left-side communication passage 7 corresponding to the shade side detects the outside air in the cabin 2 based on the detection result. And the fan 5 of the right side communication passage 4 corresponding to the sunlit side is installed in the passenger compartment 2 on the sunlit side.
The operation is controlled so that the air inside is discharged to the outside of the vehicle. Therefore, the cold outside air on the shade side is sucked into the passenger compartment 2 and the air on the sunny side inside the passenger compartment 2 is discharged to the outside of the vehicle. Due to the flow of the air, the vehicle is parked under the hot summer weather. Even at this time, the temperature rise in the vehicle interior 2 can be effectively suppressed.

At this time, the inclined fins 6 that incline forward toward the inside of the vehicle compartment 2 are provided in the interior side opening 4a of the right side communication passage 4, and the interior side opening 7a of the left side communication passage 7 faces the inside of the vehicle compartment 2. Since inclined fins that incline backward are arranged respectively,
The air (outside air) blown into the vehicle interior 2 from the indoor side opening 7a of the left communication passage 7 is directed rearward by the guide of the inclined fins. On the other hand, the air in the vehicle compartment 2 that is sucked into the indoor side opening 4a of the right side communication passage 4 is guided from the front toward the opening 4a by the guide of the inclined fins 6. That is, since the blowing direction of the outside air sucked into the vehicle compartment 2 and the suction direction of the air discharged from the vehicle compartment 2 are different from each other, the inside of the vehicle compartment 2 is opened from the opening 7a of the left-side communication passage 7. The cold outside air blown to the air passes through the shortest distance and remains as it is at the opening 4a of the right communication passage 4.
Therefore, the temperature in the vehicle interior 2 can be efficiently lowered.

FIGS. 7 and 8 show another embodiment of the present invention (note that the same parts as those in FIGS. 5 and 6 are designated by the same reference numerals and their detailed description will be omitted). The in-vehicle battery is charged by the output power of 3, 3, ....

That is, in the present embodiment, as shown in FIG. 7, the solar cells 3, 3, ... And the motors 5a, 8a for driving the fans 5, 8 are directly connected to the controller 13 '. Also the controller 1
A battery 18 mounted on the vehicle is connected to 3 '.

Then, in the controller 13 ', the signal processing procedure is performed as shown in FIG. First, in step S ₁ after the start, the left and right solar radiation sensors 14 and 15 detect the amount of solar radiation respectively, and then in step S ′ ₁ , the left and right solar radiation sensors 1 and 15 are detected.
It is determined whether the output values of 4, 15 are greater than or equal to the set value, that is, whether the amount of solar radiation is large. If this determination is NO, step S ″ ₁
, And connects the solar cells 3, 3, ... To the battery 18 to bring the battery 18 into a charged state, and returns to step S ₁ .

On the other hand, if the determination in step S _'1 YES, the step S ₂ as in the above Example, S _3, S ₅ proceeds. That is, step
In S ₂ , the output values of the left and right solar radiation sensors 14 and 15 (solar radiation amount)
Comparing the magnitude, the amount of solar radiation right is determined YES at least the amount of solar radiation left in step S _2, the routine proceeds to step S _3, whereas for exhaust operation the right fan 5, the left side of the fan 8 makes the intake operation, and then returns to step S ₁ , while if it is determined in step S ₂ that the right side solar radiation amount is less than the left side solar radiation amount, the process proceeds to step S ₅ and the right side fan 5 is turned on. The intake operation is performed and the left fan 8 is exhausted, and then the process returns to step S ₁ .

Therefore, in this embodiment, when the amount of solar radiation is small, the ventilation of the vehicle interior 2 by the drive of the fans 5 and 8 is not performed, and the electric power generated by the solar cells 3, 3, ... Is consumed to charge the battery 18. . Therefore, it is advantageous in that the solar energy can be used more effectively.

In the above embodiment, the communication passages 4 and 7 and the solar radiation sensors 14 and 15 are arranged on both the left and right sides of the vehicle body 1 so that ventilation control is performed only in the left and right sides of the vehicle body. You may arrange | position in a direction and it may make it control about the front-back direction. If two pairs of solar radiation sensors are provided on the left and right sides and front and rear sides of the vehicle body 1 in total, the solar radiation direction can be detected more accurately and accurate control can be performed.

Furthermore, without providing the solar radiation sensors 14, 15, the solar cells 3, 3, ...
It is also possible to detect the direction of solar radiation by comparing the distributions of the output intensities.

(Effects of the Invention) As described above, according to the present invention, a plurality of communication passages communicating with the inside and outside of the vehicle body are provided in the vehicle body, and in each of the communication passages, a fan capable of reversing forward and backward by a solar cell attached to the vehicle body. When the vehicle is driven to ventilate the interior of the vehicle, the direction of the sun's sunlight with respect to the vehicle body is detected, and the fan operation control is performed so that the intake and discharge of air into the cabin are different between the sunlit side and the shaded side depending on the sunlit direction. By doing so, for example, in the summer scorching sun, the air located on the sunlit side in the passenger compartment can be discharged to the outside of the vehicle and the outside air on the shaded side can be sucked into the passenger compartment to suppress the temperature rise in the passenger compartment. Even when the vehicle is parked, it is possible to efficiently ventilate the interior of the vehicle by the solar cell and effectively suppress an uncomfortable temperature change in the vehicle.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic perspective view showing the mounting positions of various parts to a vehicle body, FIG. 2 is a front view showing the relationship between the vehicle body and the direction of sunlight, and FIG. The same plan view, FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is an electric circuit diagram showing the configuration of the control system, and FIG. 6 is a flow chart showing the signal processing procedure in the controller. FIGS. 7 and 8 show another embodiment, and FIG. 7 is a view corresponding to FIG.
FIG. 8 is a view corresponding to FIG. 1 ... Body, 2 ... Vehicle compartment, 3 ... Solar cell, 4,7 ... Communication passage, 4a, 7a ... Indoor opening, 4b, 7b ... Outdoor opening, 5,8 ... Fan, 13,13 '... Controller, 14,15
...... Insolation sensor, 16 ... Insolation direction detection means, 17,17 '...
… Control means, s… the sun.

Claims (1)

[Scope of utility model registration request] 1. A solar cell mounted on a vehicle body, one end of each of which is opened to the vehicle interior through an indoor opening, and the other end of which is open to the outside of the vehicle through an outdoor opening. A plurality of communication passages formed so as to communicate with the outside of the vehicle, and the interior-side openings and the exterior-side openings are separated from each other in the vehicle body wall portion around the compartment, and A fan that is installed and can rotate forward and backward in response to the output of the above-mentioned solar cell, and that inhales air outside the vehicle or discharges air inside the vehicle to the outside of the vehicle, and detects the direction of solar radiation with respect to the vehicle body. Means and the output of the solar radiation direction detecting means, the operation of the fan is controlled so that the intake passage and the exhaust air of the air in the vehicle compartment are different between the communication passage located on the sunlit side and the communication passage located on the shade side. Characterized by having a control means Ventilation system using solar cells.