JP5720982B2 - Dashboard cooling system - Google Patents

Description

  The present invention relates to a dashboard cooling system mounted on a vehicle.

  Japanese Patent Application Laid-Open No. 9-95124 discloses that an exhaust fan provided in a vent opening that communicates between the interior of a vehicle and the outside of the vehicle is rotated to forcibly replace the air in the vehicle interior with the outside air, so that the interior of the vehicle interior is close to the outside temperature. A ventilation device is described that maintains the condition.

  Japanese Patent Laid-Open No. 2006-27461 discloses an instrument panel that introduces outside air into the inner space of the instrument panel, exhausts the accumulated air in the inner space of the instrument panel to the interior space of the instrument panel, and exhausts the accumulated air in the interior of the instrument panel to the outside. Describes a ventilation device that lowers the temperature of the instrument panel surface by lowering the temperature of the interior space.

JP-A-9-95124 JP 2006-27461 A

  In general, a dashboard disposed immediately below a front window panel of a vehicle is likely to become high temperature due to incidence of sunlight. The high temperature of the dashboard increases the temperature in the passenger compartment. In particular, when the amount of solar radiation is high and the temperature is high in summer, the temperature of the dashboard and the temperature of the passenger compartment become extremely high, which gives the passengers an uncomfortable feeling. For this reason, it is desirable to suppress the temperature rise of a dashboard.

  However, the ventilator described in the above-mentioned JP-A-9-95124 ventilates the passenger compartment and lowers the passenger compartment temperature, and does not directly lower the dashboard temperature.

  Moreover, the ventilation apparatus described in the said Unexamined-Japanese-Patent No. 2006-27461 reduces the temperature of the instrument panel surface by ventilating the internal space of an instrument panel, and is a dashboard which becomes high temperature in response to the incidence of sunlight. It does not directly cool the top surface of the glass. For this reason, there is a possibility that the temperature of the dashboard cannot be lowered sufficiently.

  Therefore, an object of the present invention is to provide a dashboard cooling system capable of effectively suppressing a rise in dashboard temperature.

In order to achieve the above object, a first aspect of the present invention is a dashboard cooling system that suppresses temperature rise of a dashboard of a vehicle, and includes a cooling path, a circulation path, a pump, a ventilation path, a switching means, and a radiator. And air-conditioning operation detection means and switching control means .

The cooling path has an inflow port through which the cooling liquid flows in and an outflow port through which the cooling liquid flows, and circulates in the vicinity of almost the entire area of the upper surface of the dashboard. The circulation path connects the inlet and the outlet. The pump is provided in the circulation path and circulates and supplies the coolant recovered from the outlet to the inlet. The air passage includes a first region that communicates with the first opening that opens to the outside of the vehicle and the branch portion, a second region that communicates with the second opening that opens to the outside of the vehicle and the branch portion, and a third opening that opens into the vehicle interior. And a third region communicating with the branch portion. The switching means can be selectively set to a first communication state that closes the second region and a second communication state that closes the third region. The radiator has a radiator that is provided in the circulation path and is disposed in the first area and through which the coolant flows, and a fan that is provided in the first area and ventilates the radiator, and that circulates in the circulation path. Cool the liquid. The air conditioning operation detection means detects whether or not an air conditioner that is provided in the vehicle and supplies conditioned air to the passenger compartment is operating. The switching control means sets the switching means to the second communication state when the air-conditioning operation detecting means detects that the air-conditioning apparatus is operating, and when the air-conditioning operation detecting means detects that the air-conditioning apparatus is not operating, The switching means is set to the first communication state.

  In the above configuration, when the pump is driven, the coolant flows into the cooling path from the inlet, circulates in the vicinity of almost the entire area of the dashboard, flows out from the outlet, flows through the radiator, and again from the inlet. It flows into the cooling path. When the fan is driven, air passes through the radiator. The upper surface of the dashboard is cooled by the coolant flowing through the cooling path, and the coolant that has been heated by cooling the dashboard is cooled by the air passing through the radiator. The radiator and the fan are provided in the first region of the ventilation path. When the switching means is set to the first communication state, the second region is closed, the air passage communicates with the vehicle interior and the exterior through the third opening and the first opening, and when the fan is driven, Air is exchanged with air outside the vehicle to ventilate the vehicle interior. On the other hand, when the switching means is set to the second communication state, the third region communicating with the vehicle interior through the third opening is closed, the air passage is not communicated with the vehicle interior, and the vehicle interior is not ventilated.

As described above, since the upper surface of the dashboard that is heated by the incidence of sunlight is cooled by circulating the coolant having a relatively large specific heat, an increase in the temperature of the dashboard can be effectively suppressed. Moreover, since the temperature rise of a dashboard is suppressed, the temperature rise in a vehicle interior can also be suppressed indirectly. In addition, since the radiator is provided in the air passage that can communicate with the vehicle interior and the outside of the vehicle, the dashboard can be cooled and the vehicle interior can be ventilated simultaneously by communicating the air passage with the vehicle interior and the outside of the vehicle. it can. Furthermore, since the communication state of the air passage can be arbitrarily changed by the setting of the switching means, it is possible to select whether or not to ventilate the vehicle interior according to environmental conditions, vehicle conditions, and the like.
Further, when the air conditioner is activated, the switching means is set to the second communication state, so that the vehicle interior is not ventilated. Therefore, the conditioned air does not flow out of the vehicle, and power consumption due to excessive use of the air conditioner can be suppressed.

  The dashboard cooling system may include a vehicle interior temperature detection sensor and a switching control unit. The vehicle interior temperature detection sensor detects the temperature in the vehicle interior. The switching control means sets the switching means to the first communication state when the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is equal to or higher than the predetermined temperature, and switches the switching means when the detected temperature in the vehicle interior is lower than the predetermined temperature. Is set to the second communication state.

  In the above configuration, when the temperature in the vehicle interior is equal to or higher than the predetermined temperature, the switching means is set to the first communication state by the switching control means, so that the cooling of the dashboard and the ventilation of the vehicle interior are performed simultaneously. On the other hand, when the temperature in the passenger compartment is lower than the predetermined temperature, the switching means is set to the second communication state, so that only the dashboard is cooled. For this reason, for example, when the vehicle interior becomes hot after parking in the midsummer sun, the dashboard is cooled and the vehicle interior is ventilated at the same time. Only the dashboard can be cooled.

A second aspect of the present invention, the cooling path of the first aspect, the circulation path, a pump, a dashboard cooling system with ventilation channel, switching means, and a radiator, car for detecting the temperature in the passenger compartment When the temperature of the vehicle interior detected by the vehicle interior temperature detection sensor and the vehicle interior temperature detection sensor is equal to or higher than the predetermined temperature, the switching means is set to the first communication state, and the temperature of the vehicle interior detected by the vehicle interior temperature detection sensor is predetermined. A switching control means for setting the switching means to the second communication state when the temperature is lower, and an air conditioning operation detecting means for detecting whether or not the air conditioner for supplying the conditioned air to the passenger compartment provided in the vehicle is operating. with Ru. The switching control means sets the switching means to the second communication state when the air conditioning operation detecting means detects that the air conditioner is operating, regardless of the temperature in the passenger compartment.

  In the above configuration, when the air conditioner is activated, the switching means is set to the second communication state even if the temperature in the passenger compartment is equal to or higher than the predetermined temperature, so that the passenger compartment is not ventilated. Therefore, the conditioned air does not flow out of the vehicle, and power consumption due to excessive use of the air conditioner can be suppressed.

The dashboard cooling system according to the first aspect may include fan control means for controlling the fan. The fan can be selectively set to a forward rotation state in which air flows from the branching portion toward the first opening and a reverse rotation state in which air flows from the first opening toward the branching portion. The fan is selectively set to at least one of a forward rotation state and a reverse rotation state.

  In the above configuration, when the switching unit is set to the first communication state by the switching control unit and the fan is set to the normal rotation state by the fan control unit, the air in the vehicle interior passes through the radiator and is discharged outside the vehicle. In other words, the interior of the vehicle is ventilated by the exhaust system simultaneously with the cooling of the dashboard, and the heated coolant flowing through the radiator is mainly cooled by the air in the vehicle. Further, when the switching means is set to the first communication state and the fan is set to the reverse rotation state, air outside the vehicle passes through the radiator and is supplied into the vehicle interior. In other words, the interior of the vehicle is ventilated by the air supply method simultaneously with the cooling of the dashboard, and the raised coolant is mainly cooled by the air outside the vehicle. On the other hand, when the switching means is set to the second communication state, only the dashboard is cooled regardless of whether the fan is set to the forward rotation state or the reverse rotation state, Cooled by outside air. As described above, since the air flow direction in the air passage can be arbitrarily changed by the setting of the fan, it is possible to select the air that cools the raised coolant according to the environmental conditions, the state of the vehicle, and the like.

In addition, the dashboard cooling system according to the first aspect may include an outside temperature detection sensor that detects a temperature outside the vehicle and a vehicle interior temperature detection sensor that detects the temperature inside the vehicle . The fan control means is configured such that the temperature outside the vehicle detected by the vehicle outside temperature detection sensor is equal to or higher than the first predetermined temperature, and the difference between the temperature inside the vehicle detected by the vehicle interior temperature detection sensor and the temperature outside the vehicle detected by the vehicle outside temperature detection sensor. Is equal to or higher than the second predetermined temperature, the fan is set in the reverse rotation state.

  In the above configuration, when the temperature outside the vehicle is equal to or higher than the first predetermined temperature and the difference between the temperature inside the vehicle interior and the temperature outside the vehicle is equal to or higher than the second predetermined temperature, the fan is set in the reverse rotation state and the coolant is heated Is mainly cooled by air outside the vehicle. For this reason, for example, when the vehicle interior is parked for a long time under the hot summer heat and the interior of the vehicle becomes considerably hotter than the outside of the vehicle, the heated coolant is cooled by the air outside the vehicle that is cooler than the air inside the vehicle. Therefore, the cooling effect of the dashboard can be improved.

According to a third aspect of the present invention , there is provided a dashboard cooling system including the cooling path, the circulation path, the pump, the ventilation path, the switching means, and the radiator of the first aspect, and a fan control means for controlling a fan; , Ru comprising a switching control means for controlling the switching means, the vehicle interior temperature sensor for detecting the temperature of the passenger compartment, the radiator exhaust gas temperature sensor for detecting the temperature of air passing through the radiator. The switching control means is configured to switch the switching means when the temperature of the passenger compartment detected by the passenger compartment temperature detection sensor is equal to or higher than the temperature of the air passing through the radiator detected by the radiator exhaust temperature sensor. When the temperature in the vehicle compartment detected by the vehicle interior temperature detection sensor is lower than the temperature of the air that has passed through the radiator detected by the radiator exhaust temperature sensor , the switching means is set in the second communication state. To do.

  In the above configuration, when the temperature of the vehicle interior is equal to or higher than the temperature of the air that has passed through the radiator (radiator exhaust) in a state where the cooling liquid heated by the fan set in the reverse rotation state is cooled by air outside the vehicle When the switching means is set to the first communication state, the interior of the vehicle is ventilated by the air supply method simultaneously with the cooling of the dashboard, and the switching means is in the second communication state when the temperature in the vehicle interior is lower than the temperature of the radiator exhaust. And only the dashboard is cooled. For this reason, when the radiator exhaust is at a lower temperature than the air in the passenger compartment, the radiator exhaust can be supplied into the passenger compartment to directly suppress the temperature rise in the passenger compartment.

The dashboard cooling system according to the third aspect may include vehicle start detection means for detecting start of the vehicle. The switching control means sets the switching means in the second communication state when the fan control means sets the fan in the reverse rotation state and the vehicle start detection means detects the start of the vehicle regardless of the temperature of the air that has passed through the radiator. Set to.

  In the above configuration, when the vehicle is started, even if the temperature of the radiator exhaust is lower than the temperature in the vehicle interior, the switching means is set to the second communication state, and the vehicle interior is not ventilated. Accordingly, since the radiator exhaust that is relatively hot is not supplied to the vehicle interior, the occupant can ride comfortably without feeling discomfort due to the convection of the radiator exhaust in the vehicle interior.

  The dashboard cooling system may include a solar cell that converts sunlight into electric power. In this case, the pump and fan are directly driven by power from the solar cell.

  In the above configuration, the pump and the fan are driven by being directly supplied with electric power from the solar cell that generates power in proportion to the amount of solar radiation. For this reason, the drive of the pump and fan changes in proportion to the amount of solar radiation. When the amount of solar radiation is large, the flow rate of the coolant supplied to the cooling path and the air volume of the air passing through the radiator increase. The effect and the ventilation effect in the passenger compartment are improved. Therefore, the dashboard can be cooled and the vehicle interior can be ventilated in accordance with the environmental conditions without controlling the driving of the pump and the fan. In addition, since a sensor and a control device for controlling the driving of the pump and the fan are unnecessary, an increase in the number of parts can be suppressed and the system can be simplified.

  According to the present invention, since the upper surface of the dashboard is cooled by the coolant, the temperature rise of the dashboard can be effectively suppressed.

It is the schematic of the vehicle 2 carrying the dashboard cooling system 1 of 1st Embodiment. 1 is a configuration diagram of a dashboard cooling system 1. FIG. It is the top view and sectional drawing of the cooling panel 6. It is a block diagram of the dashboard cooling system of 2nd Embodiment.

  Hereinafter, the dashboard cooling system 1 of 1st Embodiment of this invention is demonstrated with reference to drawings. FIG. 1 is a schematic view of a vehicle 2 on which a dashboard cooling system 1 is mounted. FIG. 2 is a configuration diagram of the dashboard cooling system 1. Fig.3 (a) is a top view of the cooling panel 6, and FIG.3 (b) is AA arrow sectional drawing of Fig.3 (a).

  As shown in FIGS. 1 and 2, the dashboard cooling system 1 includes a cooling panel 6, a circulation pipe 10, a solar cell 11, a ventilation duct 13, a pump 27, a radiator 29, a vehicle interior temperature detection sensor 33, and a controller 34. And is mounted on the vehicle 2. The heat radiator 29 includes a radiator 30 and a fan 31. The vehicle 2 is equipped with an air conditioner device (hereinafter simply referred to as an air conditioner) for supplying conditioned air into the passenger compartment 3, and the air conditioner is operated and stopped in the passenger compartment 3 in accordance with an operation from a passenger. An air conditioner switch 35 is arranged.

  As shown in FIGS. 3A and 3B, the cooling panel 6 includes a cooling pipe 7 and a cover 8. The cover 8 is a thin rectangular box having a first cooling plate 9 a and a second cooling plate 9 b facing each other, and covers the outer periphery of the cooling pipe 7. The first cooling plate 9a is formed of a resin material or the like having desired flexibility and low thermal conductivity (insulating property), and the second cooling plate 9b has desired flexibility and high thermal conductivity (high It is made of a heat conductive resin material or the like.

  The cooling pipe 7 is formed of a resin material having desired flexibility and high thermal conductivity (high heat conductivity), and is held by the cover 8. The inner peripheral surface of the cooling pipe 7 forms a coolant flow path (cooling path). The total length of the cooling pipe 7 is set to be several times the length in the longitudinal direction of the cover 8 (first and second cooling plates 9a, 9b), and the cooling pipe 7 has a plurality of extending along the longitudinal direction of the cover 8. It is arranged inside the cover 8 in a meandering manner so as to have a straight line portion, and circulates almost the entire area inside the cover 8. An inflow side connector (not shown) is fixed to one end (inlet) 7a of the cooling pipe 7, and an outflow side connector (not shown) is fixed to the other end (outlet) 7b. The peripheral edge of the first cooling plate 9a and the peripheral edge of the second cooling plate 9b are joined to each other in a region excluding the opening portions exposing both ends 7a and 7b of the cooling pipe 7.

  As shown in FIGS. 1 and 2, the cooling panel 6 is placed and fixed on the upper surface of the dashboard 4. In this state, the second cooling plate 9 b covers the upper surface of the dashboard 4 over almost the entire area and is in close contact with the upper surface of the dashboard 4. The structure of the cooling panel 6 is not limited to the above. For example, the cooling pipe 7 may be arranged in another shape (for example, a spiral shape) that circulates almost the entire area inside the cover 8. Further, the cooling pipe 7 may be omitted, and the flow path of the cooling liquid may be formed by the inner surfaces of the first and second cooling plates 9a and 9b.

  The circulation pipe 10 includes a first conduit 10 a that connects the outlet 27 b of the pump 27 and one end (inflow side connector) 7 a of the cooling pipe 7, the other end (outflow side connector) 7 b of the cooling pipe 7, and the radiator 30. It has the 2nd pipe line 10b which connects the inflow port 30a, and the 3rd pipe line 10c which connects the outflow port 30b of the radiator 30 and the inflow port 27a of the pump 27. The circulation pipe 10 is formed of a metal material, a resin material, or the like with high heat insulation. The inner peripheral surface of the circulation pipe 10 forms a flow path (circulation path) for the cooling liquid, and flows through the flow path in a state where the cooling liquid is sealed. The coolant in the circulation pipe 10 flows into the cooling pipe 7 from one end 7a and flows out to the circulation pipe 10 from the other end 7b.

  The solar cell 11 is provided on the roof 5 of the vehicle 2 and converts solar rays into electric power. The power supply line 12 of the solar battery 11 is connected to a later-described valve drive motor 26, pump motor 28, and fan motor 32 via a controller 34. The controller 34 directly supplies the electric power generated by the solar cell 11 to the motors 26, 28, 32 in a state where the vehicle-mounted battery (not shown) mounted on the vehicle 2 and the motors 26, 28, 32 are disconnected. . The amount of power generated by the solar cell 11 changes in proportion to the amount of solar radiation, and increases or decreases according to the increase or decrease of the amount of solar radiation.

  The ventilation duct 13 includes a first duct 14, a second duct 17, a third duct 20, and a branch connection pipe 23, and is provided in the interior space of the rear portion of the vehicle 2. One end of the first duct 14, one end of the second duct 17, and one end of the third duct 20 are connected to the branch connection pipe 23 in a state of communicating with each other. A first opening 15 that opens to the outside of the vehicle is provided at the other end of the first duct 14, and a second opening 18 that opens to the outside of the vehicle is provided to the other end of the second duct 17. A third opening 21 that opens into the passenger compartment 3 behind the rear seat is provided at the other end of the rear seat. The inner peripheral surfaces of the first to third ducts 14, 17, 20 and the branch connection pipe 23 form an air passage. The inner peripheral surface of the branch connection pipe 23 defines a branch portion 24, and the inner peripheral surface of the first duct 14 defines a first region 16 that communicates the first opening 15 and the branch portion 24, and the second duct. The inner peripheral surface of 17 defines a second region 19 that communicates the second opening 18 and the branching portion 24, and the inner peripheral surface of the third duct 20 communicates the third opening 21 and the branching portion 24. Three areas 22 are defined. The first region 16 and the third region 22 are continuous in a straight line via the branch portion 24.

  The branching section 24 is provided with a switching valve (switching means) 25. The switching valve 25 is rotatably supported by the branch connection pipe 23 and is selectively set to the first position and the second position by the valve drive motor 26. The switching valve 25 at the first position closes the second region 19 at one end of the second duct 17, and the switching valve 25 at the second position closes the third region 22 at one end of the third duct 20. In the first communication state in which the switching valve 25 is set to the first position, the air passage communicates the interior of the passenger compartment 3 with the outside of the vehicle through the first opening 15 and the third opening 21. On the other hand, in the second communication state in which the switching valve 25 is set to the second position, the air passage does not communicate with the outside of the vehicle compartment 3 via the first opening 15 and the second opening 18. Communicate. The valve drive motor 26 is driven by power supply from the solar cell 11. 1 shows a state where the switching valve 25 is set to the first position, and FIG. 2 shows a state where the switching valve 25 is set to the second position. Moreover, you may use the duct for ventilation etc. provided in the vehicle 2 for uses other than this system as the ventilation duct 13 of this system.

  The pump 27 is a centrifugal pump having an impeller that rotates following the rotation shaft of the pump motor 28, and the coolant sucked from the inlet 27 a is boosted by the rotation of the impeller and discharged from the outlet 27 b. The pump motor 28 is driven by the electric power directly supplied from the solar cell 11, and the amount of power generated by the solar cell 11 changes in proportion to the amount of solar radiation. Therefore, the amount of water discharged from the pump 27 changes in proportion to the amount of solar radiation. To do.

  The radiator 29 is disposed in the first region 16 inside the first duct 14 and is supported on the inner peripheral surface of the first duct 14 via a bracket (not shown). The radiator 30 has a core part composed of tubes and fins, and two tanks located at both ends of the core part. One and the other of the two tanks are respectively provided with an inlet 30a and an outlet 30b, and the coolant flows from the inlet 30a of one tank, passes through the tube of the core portion, and passes through the other tank. It flows out from the outlet 30b of the tank.

  The fan 31 rotates following the rotation shaft of the fan motor 32. When the fan 31 rotates, air flows into the air passage from the second opening 18 or the third opening 21, and the air that has flowed in passes through the radiator 30 and flows out of the vehicle from the first opening 15. The fan motor 32 is driven by the electric power directly supplied from the solar battery 11, and the amount of power generated by the solar battery 11 changes in proportion to the amount of solar radiation. Therefore, the amount of air blown by the fan 31 changes in proportion to the amount of solar radiation. To do.

  The vehicle interior temperature detection sensor 33 is provided in the vehicle interior 3, detects the temperature in the vehicle interior 3 every predetermined time, and outputs it to the controller 34.

  The controller 34 receives a vehicle interior temperature signal from the vehicle interior temperature detection sensor 33 and an on / off signal from the air conditioner switch 35. The controller 34 drives the valve drive motor 26 based on the temperature in the passenger compartment 3 detected by the passenger compartment temperature detection sensor 33 and the operating state of the air conditioner (the state of the on / off signal input from the air conditioner switch 35). To change the state of the switching valve 25 as appropriate. The drive control of the valve drive motor 26 by the controller 34 includes turning on / off the operation of the valve drive motor 26 and changing the rotation direction. The controller 34 sets the switching valve 25 to the first position when the temperature in the passenger compartment 3 is equal to or higher than the predetermined temperature and the air conditioner is off, and when the temperature in the passenger compartment 3 is lower than the predetermined temperature, When it is on, the switching valve 25 is set to the second position. That is, the controller 34 functions as switching control means for setting the switching valve 25 to the first position or the second position according to the temperature in the passenger compartment 3 and the operating state of the air conditioner, and the air conditioner switch 35 operates the air conditioner. It functions as air-conditioning operation detection means for detecting whether or not it is.

  In the dashboard cooling system 1 configured as described above, the coolant discharged from the pump 27 being driven flows from the first pipe 10a → the cooling pipe 7 of the cooling panel 6 → the second pipe 10b → the radiator 30 → It circulates in order of the 3rd pipe line 10c-> pump 27, and the upper surface of the dashboard 4 is cooled by the cooling fluid which distribute | circulates the cooling pipe 7. FIG.

  Further, when the temperature in the passenger compartment 3 is equal to or higher than the predetermined temperature and the air conditioner is off, the switching valve 25 is set to the first position. The air flows into the air passage from the opening 21 and is discharged out of the vehicle through the first opening 15. As a result, the coolant that has been heated by cooling the dashboard 4 is mainly cooled by the air in the passenger compartment 3, and the interior of the passenger compartment 3 is ventilated by an exhaust system. On the other hand, when the temperature in the passenger compartment 3 is lower than the predetermined temperature or when the air conditioner is on, the switching valve 25 is set to the second position. From the first opening 15 to the outside of the vehicle. Thus, the heated coolant is always cooled by the air outside the vehicle, and the interior of the passenger compartment 3 is not ventilated.

  Moreover, the pump motor 28 and the fan motor 32 are each driven by the electric power directly supplied from the solar battery 11, and the water discharge amount of the pump 27 and the air blowing amount of the fan 31 change in proportion to the amount of solar radiation. For this reason, the more the solar radiation is and the greater the amount of solar radiation is, the more the flow rate of the coolant flowing into the cooling pipe 7 and the air volume of the air passing through the radiator 30 are increased. The ventilation effect is improved.

  As described above, according to the dashboard cooling system 1 of the present embodiment, the upper surface of the dashboard 4 that is heated by the incidence of sunlight is cooled by circulating the coolant having a relatively large specific heat. The temperature increase of the board 4 can be effectively suppressed, and the temperature increase in the passenger compartment 3 accompanying the high temperature of the dashboard 4 can be suppressed.

  Further, since the cooling panel 6 is provided on the upper surface of the dashboard 4 without changing the internal structure of the dashboard 4, the present system can be easily applied to an existing vehicle.

  In addition, since the radiator 29 is disposed in the air passage that can be set in the first communication state that allows the inside of the passenger compartment 3 to communicate with the outside of the vehicle, in the first communication state, simultaneously with the cooling of the dashboard 4, the passenger compartment. The inside of the vehicle compartment 3 can be ventilated by discharging the air in the vehicle 3 to the outside of the vehicle.

  Further, when the interior of the passenger compartment 3 is above a predetermined temperature and the air conditioner is off, the interior of the passenger compartment 3 is ventilated, and when the temperature inside the passenger compartment 3 is lower than the predetermined temperature or the air conditioner is on, The room 3 is not ventilated. Therefore, for example, when the vehicle interior 3 is parked under the hot summer sun and the interior of the passenger compartment 3 becomes hot, the dashboard 4 is cooled and the interior of the passenger compartment 3 is ventilated at the same time. Therefore, it is possible to reduce the discomfort of the passengers at the time of boarding and to suppress power consumption due to excessive use of the air conditioner immediately after the start of driving. On the other hand, when the interior of the passenger compartment 3 is at a suitable temperature or when the occupant operates the air conditioner, only the dashboard 4 is cooled and the air in the passenger compartment 3 does not flow out of the passenger compartment. It can be maintained in a state, and power consumption due to excessive use of the air conditioner can be suppressed.

  The pump 27 and the fan 31 are driven by the pump motor 28 and the fan motor 32 that are driven by being directly supplied with power from the solar battery 11 that generates power in proportion to the amount of solar radiation. Without control, the dashboard 4 can be cooled and the interior of the passenger compartment 3 can be ventilated in accordance with environmental conditions. In addition, since a sensor and a control device for controlling the driving of the pump 27 and the fan 31 are not required, an increase in the number of parts can be suppressed and the system can be simplified.

  Moreover, since the switching valve 25, the pump 27, and the fan 31 are driven only by the electric power from the solar cell 11, the operation of the dashboard cooling system 1 does not affect the in-vehicle battery.

  The method for cooling the dashboard 4 is not limited to the above. For example, a pipe through which the coolant flows may be directly attached to the inside of the upper panel of the dashboard 4. A cooling channel may be formed in the upper panel of the dashboard 4 by forming a flow path through which the coolant flows. A liquid may be circulated.

  Further, the state of the switching valve 25 is not limited to being set based on both the temperature in the passenger compartment 3 and the operating state of the air conditioner, and may be set based on any one or other criteria. Well, it may be set according to the will of the passenger. When setting the state of the switching valve 25 according to the occupant's intention, a method of providing a dedicated switch for receiving an operation from the occupant in the passenger compartment 3 or the like, and the controller 34 switching the state of the switching valve 25 according to the operation of the switch. Alternatively, a method of switching the state of the switching valve 25 by attaching a mechanical lever to the switching valve 25 and directly operating the lever by an occupant can be applied.

  Further, instead of the vehicle interior temperature detection sensor 33 and the controller 34, a thermostat is provided in the vehicle interior 3, and the direction of rotation of the valve drive motor 26 is controlled in accordance with an on / off signal from the thermostat, and the switching valve 25. The state may be switched.

  Moreover, the arrangement | positioning location of the solar cell 11 is not limited above, For example, the upper surface of the cooling panel 6 on the dashboard 4 may be sufficient. Since the solar cell 11 improves the power generation efficiency as its own temperature is lower, the solar cell 11 is placed on the upper surface of the first cooling plate 9a of the cooling panel 6, and the first cooling plate 9a is replaced with the second cooling plate. As with 9b, the power generation efficiency of the solar cell 11 can be improved by forming it with a resin having a high thermal conductivity.

  Further, the state of the switching valve 25 may be changed by an air cylinder, a hydraulic cylinder, or the like.

  Next, a dashboard cooling system according to a second embodiment of the present invention will be described with reference to the drawings. The present embodiment is different from the first embodiment in that the rotation direction of the fan 31 is controlled to change the air flow direction in the air passage. In addition, the same code | symbol is attached | subjected to the structure similar to the said 1st Embodiment, and the detailed description is abbreviate | omitted. FIG. 4 is a configuration diagram of the dashboard cooling system of the present embodiment.

  As shown in FIG. 4, the dashboard cooling system of the present embodiment includes an outside temperature detection sensor 36 and a radiator exhaust temperature detection sensor 37. An ignition switch 38 for starting and stopping the vehicle 2 in accordance with an operation from a passenger is disposed in the passenger compartment 3.

  The vehicle outside temperature detection sensor 36 is provided outside the vehicle 2, detects the temperature outside the vehicle every predetermined time, and outputs it to the controller 34.

  The radiator exhaust temperature detection sensor 37 is provided between the radiator 30 and the switching valve 25 in the air passage, detects the temperature of the air (radiator exhaust) that has passed through the radiator 30 every predetermined time, and outputs the detected temperature to the controller 34. .

  The fan 31 is selectively set to a normal rotation state and a reverse rotation state by a fan motor 32. When the fan 31 rotates in the forward rotation state, air flows into the air passage from the second opening 18 or the third opening 21, and the air that has flowed in passes through the radiator 30 and flows out of the vehicle from the first opening 15. On the other hand, when the fan 31 rotates in the reverse rotation state, air outside the vehicle flows into the air passage from the first opening 15, and the air that has flowed in passes through the radiator 30 and flows out from the second opening 18 or the third opening 21. .

  The controller 34 receives temperature signals from the vehicle interior temperature detection sensor 33, the vehicle exterior temperature detection sensor 36 and the radiator exhaust temperature sensor 37, and ON / OFF signals from the ignition switch 38 and the air conditioner switch 35. The controller 34 controls the rotation direction of the fan motor 32 based on the temperature inside the vehicle compartment 3 detected by the vehicle interior temperature detection sensor 33 and the temperature outside the vehicle detected by the vehicle outside temperature detection sensor 36 to control the fan 31. Change the rotation state as appropriate. Further, the temperature in the vehicle compartment 3 detected by the vehicle interior temperature detection sensor 33, the temperature of the radiator exhaust detected by the radiator exhaust temperature detection sensor 37, and the start state of the vehicle 2 (ON / OFF signal input from the ignition switch 38) ) And the operating state of the air conditioner (the state of the on / off signal input from the air conditioner switch 35), the drive of the valve drive motor 26 is controlled to change the state of the switching valve 25 as appropriate.

  When the temperature outside the vehicle is lower than the first predetermined temperature or when the difference between the temperature inside the passenger compartment 3 and the temperature outside the vehicle is lower than the second predetermined temperature, the controller 34 sets the fan 31 in the normal rotation state. When the temperature outside the vehicle is equal to or higher than the first predetermined temperature and the difference between the temperature inside the passenger compartment 3 and the temperature outside the vehicle is equal to or higher than the second predetermined temperature, the fan 31 is set in the reverse rotation state. When the fan 31 is set in the forward rotation state, the controller 34 sets the switching valve 25 to the first position when the temperature in the passenger compartment 3 is equal to or higher than a predetermined temperature and the air conditioner is off. When the temperature is lower than the predetermined temperature or when the air conditioner is on, the switching valve 25 is set to the second position. On the other hand, when the fan 31 is set in the reverse rotation state, the controller 34 sets the switching valve 25 to the first position when the temperature in the passenger compartment 3 is equal to or higher than the temperature of the radiator exhaust and the vehicle 2 is not started. When the temperature inside the passenger compartment 3 is lower than the temperature of the radiator exhaust or when the vehicle 2 is started, the switching valve 25 is set to the second position. That is, the controller 34 sets fan control means for setting the fan 31 to the forward rotation state or the reverse rotation state according to the temperature inside the vehicle compartment 3 and the temperature outside the vehicle, and the temperature inside the vehicle compartment 3, the radiator exhaust temperature, and the vehicle The switching valve 25 functions as switching control means for setting the switching valve 25 to the first position or the second position in accordance with the starting state 2 and the operating state of the air conditioner. Further, the ignition switch 38 functions as a vehicle start detection unit that detects the start of the vehicle 2.

  In the dashboard cooling system configured as described above, when the temperature outside the vehicle is lower than the first predetermined temperature or when the difference between the temperature in the passenger compartment 3 and the temperature outside the vehicle is lower than the second predetermined temperature, the fan 31 is set to the forward rotation state. When the fan 31 is set to the normal rotation state, the temperature in the passenger compartment 3 is equal to or higher than the predetermined temperature, and the air conditioner is off, the switching valve 25 is set to the first position. As the fan 31 rotates, it flows into the air passage from the third opening 21 and is discharged out of the vehicle through the first opening 15. As a result, the heated coolant is cooled mainly by the air in the passenger compartment 3, and the passenger compartment 3 is ventilated by an exhaust system. Further, when the fan 31 is set to the normal rotation state and the temperature in the passenger compartment 3 is lower than the predetermined temperature or the air conditioner is on, the switching valve 25 is set to the second position, so that the air outside the vehicle is As the fan 31 rotates, the air flows into the air passage from the second opening 18 and is discharged out of the vehicle through the first opening 15. Thus, the heated coolant is always cooled by the air outside the vehicle, and the interior of the passenger compartment 3 is not ventilated.

  On the other hand, when the temperature outside the vehicle is equal to or higher than the first predetermined temperature and the difference between the temperature inside the passenger compartment 3 and the temperature outside the vehicle is equal to or higher than the second predetermined temperature, the fan 31 is set in the reverse rotation state. When the fan 31 is set in the reverse rotation state, the temperature in the passenger compartment 3 is equal to or higher than the temperature of the radiator exhaust, and the vehicle 2 is not started, the switching valve 25 is set to the first position. The air flows into the air passage from the first opening 15 by the rotation of the fan 31, and is supplied into the passenger compartment 3 from the third opening 21. Thus, the heated coolant is cooled mainly by the air outside the vehicle, and the interior of the passenger compartment 3 is ventilated by the air supply method. Further, when the fan 31 is set in the reverse rotation state and the temperature in the passenger compartment 3 is lower than the temperature of the radiator exhaust or when the vehicle 2 is started, the switching valve 25 is set at the second position, so that the outside of the vehicle This air flows into the air passage from the first opening 15 by the rotation of the fan 31 and is discharged out of the vehicle through the second opening 18. Thus, the heated coolant is always cooled by the air outside the vehicle, and the interior of the passenger compartment 3 is not ventilated.

  As described above, according to the dashboard cooling system of this embodiment, the rotation direction of the fan 31 is controlled to change the flow direction of the air in the air passage, so the air for cooling the heated coolant is selected. be able to.

  When the temperature outside the vehicle is equal to or higher than the first predetermined temperature and the difference between the temperature inside the passenger compartment 3 and the temperature outside the vehicle is equal to or higher than the second predetermined temperature, the raised coolant is cooled by the air outside the vehicle. . For this reason, for example, when the vehicle interior 3 is parked for a long time under the hot summer sun and the interior of the passenger compartment 3 becomes considerably hotter than the exterior of the vehicle, the temperature of the coolant outside the vehicle is lower than the air in the interior of the passenger compartment 3. Therefore, the cooling effect of the dashboard 4 can be improved.

  When the temperature of the interior of the passenger compartment 3 is equal to or higher than the radiator exhaust temperature and the vehicle 2 is not started in a state where the heated coolant is cooled by the air outside the vehicle, the temperature of the coolant is higher than that of the air in the passenger compartment 3. Since the low-temperature radiator exhaust is supplied into the passenger compartment 3, the interior of the passenger compartment 3 can be lowered, and the temperature rise in the passenger compartment 3 can be effectively suppressed.

  Further, when the vehicle 2 is started, the supply of the radiator exhaust into the passenger compartment 3 is stopped, so that the passenger can ride comfortably without feeling uncomfortable due to the convection of the radiator exhaust inside the passenger compartment 3. .

  In addition, the said embodiment is an example of this invention and can be changed in the range which does not deviate from this invention.

  INDUSTRIAL APPLICABILITY The present invention is effective for suppressing a temperature rise in a vehicle dashboard and a passenger compartment.

1: Dashboard cooling system 6: Cooling panel 7: Cooling pipe 8: Cover 9a, 9b: First and second cooling plates 10: Circulation pipe 11: Solar cell 12: Power supply line 13: Ventilation duct 14: First duct 17: 2nd duct 20: 3rd duct 23: Branch connection pipe 25: Switching valve 26: Valve drive motor 27: Pump 28: Pump motor 29: Radiator 30: Radiator 31: Fan 32: Fan motor 33: Vehicle interior temperature Detection sensor 34: Controller 35: Air conditioner switch 36: Outside temperature detection sensor 37: Radiator exhaust temperature detection sensor 38: Ignition switch

Claims (8)

A cooling passage that has an inflow port through which the cooling liquid flows in and an outflow port through which the cooling liquid flows, and circulates in the vicinity of almost the entire area of the upper surface of the dashboard;
A circulation path communicating the inlet and the outlet;
A pump provided in the circulation path, for circulatingly supplying the coolant recovered from the outlet to the inlet;
A first region that communicates with the first opening that opens to the outside of the vehicle and the branch portion, a second region that communicates with the second opening that opens to the outside of the vehicle and the branch portion, a third opening that opens into the vehicle interior, and the branch An air passage having a third region communicating with the portion;
Switching means that can be selectively set between a first communication state that closes the second region and a second communication state that closes the third region;
A radiator provided in the circulation path and disposed in the first region and through which a coolant flows; and a fan provided in the first region and ventilating the radiator, and circulates through the circulation path. A radiator for cooling the coolant,
Air-conditioning operation detecting means for detecting whether or not an air-conditioning device that is provided in a vehicle and supplies conditioned air to the vehicle interior is operating;
When the air-conditioning operation detecting means detects that the air-conditioning apparatus is operating, the switching means is set to the second communication state, and the air-conditioning operation detecting means detects that the air-conditioning apparatus is not operating And a switching control means for setting the switching means to the first communication state . A dashboard cooling system, comprising: The dashboard cooling system of claim 1,
A vehicle interior temperature detection sensor for detecting the temperature in the vehicle interior;
When the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is equal to or higher than a predetermined temperature, the switching means is set in the first communication state, and the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is the predetermined temperature. And a switching control means for setting the switching means to the second communication state when the number is less than 1. A dashboard cooling system, comprising: A cooling passage that has an inflow port through which the cooling liquid flows in and an outflow port through which the cooling liquid flows, and circulates in the vicinity of almost the entire area of the upper surface of the dashboard;
A circulation path communicating the inlet and the outlet;
A pump provided in the circulation path, for circulatingly supplying the coolant recovered from the outlet to the inlet;
A first region that communicates with the first opening that opens to the outside of the vehicle and the branch portion, a second region that communicates with the second opening that opens to the outside of the vehicle and the branch portion, a third opening that opens into the vehicle interior, and the branch An air passage having a third region communicating with the portion;
Switching means that can be selectively set between a first communication state that closes the second region and a second communication state that closes the third region;
A radiator provided in the circulation path and disposed in the first region and through which a coolant flows; and a fan provided in the first region and ventilating the radiator, and circulates through the circulation path. A radiator for cooling the coolant,
A vehicle interior temperature detection sensor for detecting the temperature in the vehicle interior;
When the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is equal to or higher than a predetermined temperature, the switching means is set in the first communication state, and the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is the predetermined temperature. A switching control means for setting the switching means to the second communication state;
And a air-conditioning operation detecting means for air conditioning system for supplying conditioned air provided to the vehicle to the passenger compartment to detect whether operating,
The switching control means sets the switching means to the second communication state when the air conditioning operation detecting means detects that the air conditioner is operating, regardless of the temperature in the passenger compartment. Dashboard cooling system. The dashboard cooling system of claim 1,
Fan control means for controlling the fan,
The fan can be selectively set to a forward rotation state in which air flows from the branch portion toward the first opening and a reverse rotation state in which air flows from the first opening toward the branch portion. ,
The dashboard cooling system, wherein the fan control means selectively sets the fan to at least one of the forward rotation state and the reverse rotation state. A dashboard cooling system according to claim 4,
An outside temperature detection sensor for detecting the temperature outside the vehicle;
A vehicle interior temperature detection sensor for detecting the temperature in the vehicle interior,
The fan control means is configured such that the outside temperature detected by the outside temperature detection sensor is equal to or higher than a first predetermined temperature, and the outside temperature detected by the outside temperature detection sensor and the outside temperature detected by the outside temperature detection sensor are detected. The dashboard cooling system, wherein the fan is set in the reverse rotation state when the difference from the temperature is equal to or higher than a second predetermined temperature. A cooling passage that has an inflow port through which the cooling liquid flows in and an outflow port through which the cooling liquid flows, and circulates in the vicinity of almost the entire area of the upper surface of the dashboard;
A circulation path communicating the inlet and the outlet;
A pump provided in the circulation path, for circulatingly supplying the coolant recovered from the outlet to the inlet;
A first region that communicates with the first opening that opens to the outside of the vehicle and the branch portion, a second region that communicates with the second opening that opens to the outside of the vehicle and the branch portion, a third opening that opens into the vehicle interior, and the branch An air passage having a third region communicating with the portion;
Switching means that can be selectively set between a first communication state that closes the second region and a second communication state that closes the third region;
A radiator provided in the circulation path and disposed in the first region and through which a coolant flows; and a fan provided in the first region and ventilating the radiator, and circulates through the circulation path. A radiator for cooling the coolant,
Fan control means for controlling the fan;
Switching control means for controlling the switching means;
A vehicle interior temperature detection sensor for detecting the temperature in the vehicle interior;
A radiator exhaust temperature sensor for detecting the temperature of the air that has passed through the radiator ,
The fan can be selectively set to a forward rotation state in which air flows from the branch portion toward the first opening and a reverse rotation state in which air flows from the first opening toward the branch portion. ,
The fan control means selectively sets the fan to at least one of the forward rotation state and the reverse rotation state,
When the fan is in the reverse rotation state and the temperature in the passenger compartment detected by the passenger compartment temperature detection sensor is equal to or higher than the temperature of the air that has passed through the radiator detected by the radiator exhaust temperature sensor In the case where the switching means is set to the first communication state and the temperature in the vehicle interior detected by the vehicle interior temperature detection sensor is lower than the temperature of the air passing through the radiator detected by the radiator exhaust temperature sensor. The dashboard cooling system, wherein the switching means is set to the second communication state. The dashboard cooling system of claim 6,
Vehicle start detection means for detecting the start of the vehicle,
The switching control means, when the fan control means sets the fan in the reverse rotation state and the vehicle start detection means detects start of the vehicle, regardless of the temperature of the air that has passed through the radiator, A dashboard cooling system, wherein the switching means is set to the second communication state. The dashboard cooling system according to any one of claims 1 to 7,
It has solar cells that convert solar rays into electricity,
The dashboard cooling system, wherein the pump and the fan are directly driven by electric power from the solar cell.

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