JP2020131778A - Temperature control device - Google Patents

Abstract

To improve mountability to a vehicle and reduce heat loss in a temperature control device which controls a temperature of an electric device mounted on the vehicle rear side.SOLUTION: A temperature control device includes: a front seat air conditioning unit 20; a rear seat air conditioning unit 50; an electric device 70; and a device cooling passage 59. The front seat air conditioning unit 20 is disposed at the vehicle front side and mainly blows conditioned air to the vehicle front seat side. The rear seat air conditioning unit 50 is disposed at the vehicle rear side and mainly blows conditioned air to the vehicle rear seat side. The electric device 70 is disposed at the vehicle rear side and generates heat in conjunction with operation. The device cooling passage 59 supplies conditioned air cooled by the rear seat air conditioning unit to the electric device.SELECTED DRAWING: Figure 1

Description

The present invention relates to a temperature control device that adjusts the temperature of an electric device mounted on a vehicle.

Patent Document 1 describes a temperature control device that adjusts the temperature of a secondary battery, which is an electric device mounted on a vehicle. In the temperature control device of Patent Document 1, the temperature of the electric device is adjusted by blowing air-conditioned air whose temperature has been adjusted by the vehicle air conditioner to the electric device.

Japanese Unexamined Patent Publication No. 2014-151802

However, in the configuration of Patent Document 1, when the electric device is arranged on the rear side of the vehicle, a connecting duct for blowing air conditioning air from the vehicle air conditioner on the front side of the vehicle to the electric device on the rear side of the vehicle is provided. You will need it. Therefore, the mountability of the temperature control device on the vehicle deteriorates. Further, when the distance from the vehicle air conditioner to the electric device to be cooled becomes long, the heat loss becomes large and the temperature adjustment effect is lowered.

In view of the above points, it is an object of the present invention to improve the mountability on a vehicle and reduce heat loss in a temperature control device for adjusting the temperature of an electric device mounted on the rear side of the vehicle.

In order to achieve the above object, in the invention according to claim 1, the front seat air conditioning unit (20), the rear seat air conditioning unit (50), the electrical equipment (70), and the equipment cooling aisle (59) are used. To be equipped. The front seat air conditioning unit is arranged on the front side of the vehicle and mainly blows air conditioning air to the front seat side of the vehicle. The rear seat air conditioning unit is arranged on the rear side of the vehicle and mainly blows air conditioning air to the rear seat side of the vehicle. The electrical equipment is located on the rear side of the vehicle and generates heat as it operates. The equipment cooling passage supplies the conditioned air cooled by the rear seat air conditioning unit to the electric equipment.

According to this, by cooling the electric equipment on the rear side of the vehicle by using the rear seat air conditioning unit, the equipment cooling aisle for supplying the air conditioning air of the rear seat air conditioning unit to the electric equipment is shortened as much as possible. Can be done. Therefore, it is possible to improve the mountability of the temperature control device on the vehicle. Further, since the equipment cooling passage can be shortened, the temperature change of the conditioned air supplied from the rear seat air conditioning unit can be minimized, and the heat loss can be reduced.

The reference numerals in parentheses of each of the above components indicate the correspondence with the specific means described in the embodiments described later.

It is a conceptual diagram which shows the whole structure of the temperature control apparatus of 1st Embodiment. It is a top view of the air conditioning unit for a rear seat. It is a side view seen from the direction III-III of FIG. It is a flowchart which shows the cooling control of an electric device. It is a conceptual diagram which shows the whole structure of the temperature control apparatus of 2nd Embodiment.

(First Embodiment)
Hereinafter, the first embodiment to which the temperature control device 1 of the present invention is applied will be described with reference to the drawings. The temperature control device 1 of the present embodiment is used, for example, in a vehicle such as an automobile using an internal combustion engine as a driving drive source and a hybrid vehicle using an internal combustion engine and a motor as a traveling drive source. In the temperature control device 1 of the present embodiment, the temperature control device 1 adjusts the temperature of the electric device 70 mounted on the vehicle and air-conditions the interior of the vehicle which is the air-conditioning target space.

As shown in FIG. 1, the temperature control device 1 of the present embodiment includes a refrigeration cycle device 10 and two air conditioning units 20 and 50. The temperature control device 1 of the present embodiment is a dual type vehicle air conditioner including a front seat air conditioner 20 arranged on the front side of the vehicle and a rear seat air conditioner 50 arranged on the rear side of the vehicle. .. The front seat air conditioning unit 20 mainly blows air conditioning air to the vehicle front seat side, and the rear seat air conditioning unit 50 mainly blows air conditioning air to the vehicle rear seat side. The air conditioning in the vehicle interior is mainly performed by the front seat air conditioning unit 20, and the rear seat air conditioning unit 50 is used as an auxiliary.

The refrigeration cycle device 10 is a vapor compression refrigerator and has a refrigerant pipe 11 through which a refrigerant circulates. A compressor 12, a condenser 13, expansion valves 14 and 15, and evaporators 16 and 17 are arranged in the refrigerant pipe 11. As the refrigerant flowing through the refrigerant pipe 11, an HFC-based refrigerant (for example, R134a), an HFO-based refrigerant (for example, R1234yf), or the like can be used.

The compressor 12 sucks in the refrigerant, compresses it, and discharges it. The compressor 12 is arranged in the engine room. As the compressor 12, an electric compressor driven by an electric motor or an engine-driven compressor driven by a vehicle traveling engine can be used.

The refrigerant inlet side of the condenser 13 is connected to the discharge port of the compressor 12. The condenser 13 is arranged on the front side of the vehicle in the engine room. The condenser 13 is a heat exchanger for heat dissipation that exchanges heat between the high-pressure refrigerant and the outside air blown from the cooling fan 13a to dissipate the high-pressure refrigerant and condense it. The cooling fan 13a is an electric blower and functions as an outdoor blower. The rotation speed (that is, the blowing capacity) of the cooling fan 13a is controlled by the control voltage output from the air conditioning control device 80 described later.

The expansion valves 14 and 15 are decompression units that depressurize and expand the liquid phase refrigerant flowing out of the condenser 13. The expansion valves 14 and 15 are mechanical temperature expansion valves having a temperature sensitive portion and driving the valve body by a mechanical mechanism such as a diaphragm. The expansion valves 14 and 15 include a front seat expansion valve 14 and a rear seat expansion valve 15.

The evaporators 16 and 17 exchange heat between the low-pressure refrigerant decompressed by the expansion valves 14 and 15 and the blown air blown from the blowers 23 and 53 described later, and evaporate the low-pressure refrigerant to exert an endothermic action. It is a heat exchanger. The evaporators 16 and 17 are arranged in the casings 21 and 51 of the air conditioning units 20 and 50. The evaporators 16 and 17 include a front seat evaporator 16 and a rear seat evaporator 17.

The refrigerant pipe 11 is branched into a front seat refrigerant pipe 11a and a rear seat refrigerant pipe 11b on the downstream side of the refrigerant flow of the condenser 13. The front seat refrigerant pipe 11a is provided with a front seat expansion valve 14 and a front seat evaporator 16. The rear seat refrigerant pipe 11b is provided with a rear seat expansion valve 15 and a rear seat evaporator 17. That is, the front seat expansion valve 14 and the front seat evaporator 16 and the rear seat expansion valve 15 and the rear seat evaporator 17 are provided in parallel. The front-seat refrigerant pipes 11a and the rear-seat refrigerant pipes 11b merge on the downstream side of the refrigerant flow of the front-seat evaporator 16 and the rear-seat evaporator 17.

The rear seat refrigerant pipe 11b is provided with a refrigerant on-off valve 18 on the upstream side of the rear seat expansion valve 14 in the refrigerant flow direction. The refrigerant on-off valve 18 opens and closes the rear-seat refrigerant pipe 11b by the control voltage output from the air conditioning control device 80. When the refrigerant on-off valve 18 is opened, the refrigerant flows to the rear seat evaporator 17, and when the refrigerant on-off valve 18 is closed, the refrigerant does not flow to the rear seat evaporator 17. That is, when the refrigerant on-off valve 18 is opened, the refrigerant flows in parallel to both the front seat evaporator 16 and the rear seat evaporator 17.

The front seat air conditioning unit 20 is arranged inside the instrument panel (instrument panel) at the frontmost part of the vehicle interior. The front seat air conditioning unit 20 has a front seat casing 21 that forms a passage for air conditioning air blown into the vehicle interior. The front seat casing 21 can be made of, for example, a resin material.

On the most upstream side of the air flow of the front seat casing 21, a suction port 22 for introducing conditioned air into the front seat casing 21 is provided. An inside / outside air switching device (not shown) is connected to the suction port 22, and the inside / outside air switching device can switch between the vehicle interior air (inside air) and the vehicle interior / outside air (outside air).

On the downstream side of the air flow of the suction port 22 in the front seat casing 21, a front seat blower 23 that blows the air sucked from the suction port 22 toward the vehicle interior is arranged. The front seat blower 23 is, for example, a centrifugal multi-blade fan (sirocco fan), and is rotationally driven by a blower motor 24. The rotation speed of the blower motor 24 is controlled by the control voltage output from the air conditioning control device 80.

A front seat evaporator 16 is arranged on the downstream side of the air flow of the front seat blower 23 in the front seat casing 21. The front seat evaporator 16 cools the conditioned air with a low-temperature refrigerant. A heater core 25 is arranged on the downstream side of the air flow of the front seat evaporator 16 in the front seat casing 21.

The heater core 25 is a heating heat exchanger that heats the blown air. Further, in the casing 21, an air mix door 26 is arranged on the downstream side of the air flow of the front seat evaporator 16 and on the upstream side of the air flow of the heater core 25. The air mix door 26 adjusts the amount of air (cold air) that has passed through the front seat evaporator 16 and that passes through the heater core 25 to adjust the heat exchange capacity of the heater core 25. The opening degree of the air mix door 26 is controlled by the control voltage output from the air conditioning control device 80.

Front seat openings 27, 28, and 29 for blowing conditioned air into the vehicle interior are provided at the most downstream portion of the air flow of the front seat casing 21. The front seat openings 27, 28, 29 have a defroster opening 27 that blows conditioned air toward the inner surface of the front window glass of the vehicle, a face opening 28 that blows conditioned air toward the upper body of the occupant in the vehicle interior, and an occupant. Includes a foot opening 29 that blows conditioned air toward the feet of the vehicle. The air flow downstream sides of the front seat openings 27, 28, and 29 are connected to outlets (not shown) provided in the passenger compartment via ducts forming air passages, respectively.

Front air conditioning doors 30, 31, and 32 are arranged on the upstream side of the air flow of the front seat openings 27, 28, and 29, respectively. The front seat air conditioning doors 30, 31, 32 open and close the corresponding front seat openings 27, 28, 29. These front seat air conditioning doors 30, 31, and 32 are driven by an electric actuator (not shown) whose operation is controlled by a control signal output from the air conditioning control device 80.

Next, the rear seat air conditioning unit 50 will be described with reference to FIGS. 1 to 3. The vertical direction in FIG. 2 is the vehicle front-rear direction. Further, the left-right direction in FIGS. 2 and 3 is the vehicle width direction.

The rear seat air conditioning unit 50 is arranged in, for example, a trunk room on the rear side of the vehicle. The rear seat air conditioning unit 50 has a rear seat casing 51 that forms a passage for air conditioning air blown into the vehicle interior. The rear seat casing 51 can be made of, for example, a resin material.

On the most upstream side of the air flow of the rear seat casing 51, a suction port 52 for introducing conditioned air into the rear seat casing 51 is provided. A connecting duct (suction duct) (not shown) is connected to the suction port 52 to take in vehicle interior air (inside air).

On the downstream side of the air flow of the suction port 52 in the rear seat casing 51, a rear seat blower 53 that blows the air sucked from the suction port 52 toward the vehicle interior is arranged. The rear seat blower 53 is, for example, a centrifugal multi-blade fan (sirocco fan), and is rotationally driven by a blower motor 54. The rotation speed of the blower motor 54 is controlled by the control voltage output from the air conditioning control device 80.

A rear seat evaporator 17 is arranged on the downstream side of the air flow of the rear seat blower 53 in the rear seat casing 51. The rear seat evaporator 17 cools the conditioned air with a low-temperature refrigerant.

Rear seat openings 55 and 56 for blowing conditioned air into the vehicle interior are provided at the most downstream portion of the air flow of the rear seat casing 51. The rear seat openings 55 and 56 include a first opening 55 for blowing out conditioned air from the left side of the vehicle interior and a second opening 56 for blowing out conditioned air from the right side of the vehicle interior. The downstream sides of the air flow of these openings 55 and 56 are connected to air outlets (not shown) provided in the vehicle interior via ducts forming air passages, respectively.

Rear air conditioning doors 57 and 58 are arranged on the upstream side of the air flow of the rear seat openings 55 and 56, respectively. The rear seat air conditioning doors 57, 58 open and close the corresponding rear seat openings 55, 56. These rear seat air conditioning doors 57 and 58 are driven by an electric actuator (not shown) whose operation is controlled by a control signal output from the air conditioning control device 80.

In the rear seat casing 51, the equipment cooling passage 59 branches on the air flow downstream side of the rear seat evaporator 17 and on the air flow upstream side of the rear seat air conditioning doors 57 and 58. The equipment cooling aisle 59 is an air aisle for supplying the conditioned air cooled by the rear seat evaporator 17 to the electric equipment 70. The circumference of the equipment cooling passage 59 is covered with a heat insulating material.

The electric device 70 is a device that generates heat as it operates, and is a device to be cooled by the temperature control device 1. Examples of the electric device 70 include various control devices (ECUs) for vehicles, secondary batteries, electric motors, inverters, and the like. In this embodiment, an automatic driving ECU, which is a control device for performing automatic driving control of a vehicle, is used as the electric device 70.

The electric device 70 is arranged on the rear side of the vehicle and is arranged in the vicinity of the rear seat air conditioning unit 50. The electric device 70 is arranged so as to be in contact with the device cooling passage 59. In this embodiment, two electric devices 70 are arranged on the upper surface of the device cooling passage 59.

An opening 59a is formed in a portion of the equipment cooling passage 59 corresponding to the electric equipment 70. The opening 59a can have any shape, and may be one hole or a plurality of slits. The conditioned air flowing through the equipment cooling passage 59 comes into contact with the electric equipment 70 through the opening 59a and cools the electric equipment 70.

The equipment cooling aisle 59 of the present embodiment circulates the conditioned air after cooling the electric equipment 70 to the rear seat air conditioning unit 50. The device cooling aisle 59 has an end on the downstream side of the air flow connected to the upstream side of the air flow of the rear seat blower 53 in the rear seat casing 51. The conditioned air after cooling the electric device 70 flows into the air flow upstream side of the rear seat blower 53 in the rear seat casing 51 and joins with the air flowing in from the suction port 52.

The equipment cooling passage 59 is provided with a passage opening / closing portion 60. The aisle opening / closing unit 60 switches whether or not to allow conditioned air to flow from the rear seat casing 51 into the equipment cooling passage 59, and switches whether or not to supply conditioned air to the electrical equipment 70.

The passage opening / closing unit 60 is provided with a passage opening / closing door 61 for opening / closing the equipment cooling passage 59. The passage opening / closing door 61 is driven by an electric actuator (not shown) whose operation is controlled by a control signal output from the air conditioning control device 80.

The electric device 70 is provided with a temperature sensor 71 that detects the temperature of the electric device 70. The detection signal of the temperature sensor 71 is input to the air conditioning control device 80.

The air conditioning control device 80 is composed of a well-known microcomputer including a CPU, ROM, RAM, and the like, and peripheral circuits thereof. Then, various calculations and processes are performed based on the control program stored in the ROM, and the operation of various control target devices connected to the output side is controlled. The air conditioning control device 80 of the present embodiment controls the cooling of the electric device 70.

Next, the cooling control of the electric device 70 by the temperature control device 1 of the present embodiment will be described with reference to the flowchart of FIG. It is assumed that the refrigeration cycle device 10 is operated in advance.

First, in S10, it is determined whether or not the electric device 70 needs to be cooled. For example, when the temperature of the electric device 70 detected by the temperature sensor 71 exceeds a predetermined temperature, it can be determined that the electric device 70 needs to be cooled.

If it is determined as a result of the determination process in S10 that the cooling of the electric device 70 is not necessary, the cooling control of the electric device 70 is terminated. On the other hand, when it is determined that the electric device 70 needs to be cooled, it is determined in S11 whether or not the rear seat air conditioning unit 50 is operating.

As a result, when it is determined that the rear seat air conditioning unit 50 is not in operation, the refrigerant on-off valve 18 is opened in S12, and the rear seat blower 53 is started in S13. As a result, the rear seat air conditioning unit 50 starts operating, and the air conditioning air is cooled by the low temperature refrigerant in the rear seat evaporator 17.

If the amount of air blown by the rear seat blower 53 is the minimum amount required for cooling the electrical equipment 70, and the noise caused by the rotation of the rear seat blower 53 is an amount that can be tolerated by the occupants in the passenger compartment. Good. For example, it is desirable that the amount of air blown by the rear-seat blower 53 is about 5 to 10 m ³ / h.

Next, the rear air conditioning doors 57 and 58 are closed in S14, and the aisle opening / closing door 61 is opened in S15. As a result, the entire amount of the conditioned air cooled by the low temperature refrigerant in the rear seat evaporator 17 flows into the equipment cooling passage 59, and the electric equipment 70 is cooled by the conditioned air.

Next, it is determined in S16 whether or not to finish cooling the electric device 70. For example, when the temperature of the electric device 70 detected by the temperature sensor 71 falls below a predetermined temperature, it can be determined that the cooling of the electric device 70 is completed. The determination process of S16 is repeated until it is determined that the cooling of the electric device 70 is completed. That is, the electric device 70 is continuously cooled by the conditioned air until the temperature of the electric device 70 falls below the predetermined temperature.

When it is determined as a result of the determination process in S16 that the cooling of the electric device 70 is completed, the refrigerant on-off valve 18 is closed in S17, and the operation of the rear-seat blower 53 is stopped in S18. As a result, the refrigerant does not flow to the rear seat expansion valve 15 and the rear seat evaporator 17, the blowing of the conditioned air by the rear seat blower 53 is stopped, and the operation of the rear seat air conditioning unit 50 is stopped. Subsequently, the rear air conditioning doors 57 and 58 are opened in S19, and the aisle opening / closing door 61 is closed in S20. As a result, the inflow of conditioned air into the equipment cooling passage 59 is cut off, and the cooling of the electric equipment 70 is completed.

When it is determined in the determination process of S11 described above that the rear seat air conditioning unit 50 is in operation, the aisle opening / closing door 61 is opened in S21. At this time, the refrigerant on-off valve 18 is open, the rear seat blower 53 is operating, the rear seat air conditioning doors 57 and 58 are open, and the rear seat air conditioning unit 50 is moved to the vehicle rear seat side. Air-conditioned air is being supplied.

Therefore, by opening the aisle opening / closing door 61, a part of the conditioned air cooled by the rear seat evaporator 17 flows into the equipment cooling passage 59. As a result, the electric device 70 is cooled by the conditioned air. The amount of air blown by the rear seat blower 53 depends on the amount of air blown required for air conditioning on the rear seat side of the vehicle.

Next, it is determined in S22 whether or not to finish cooling the electric device 70. The determination process of S22 is repeated until it is determined that the cooling of the electric device 70 is completed. That is, the electric device 70 is continuously cooled by the conditioned air until the temperature of the electric device 70 falls below the predetermined temperature.

When it is determined as a result of the determination process in S22 that the cooling of the electric device 70 is completed, the passage opening / closing door 61 is closed in S23. As a result, the inflow of conditioned air into the equipment cooling passage 59 is cut off, and the cooling of the electric equipment 70 is completed.

In the present embodiment described above, the conditioned air of the rear seat air conditioning unit 50 is used to cool the electric device 70 arranged on the rear side of the vehicle. As a result, the electric device 70 can be maintained at an appropriate temperature, and the durability of the electric device 70 can be improved and the quality can be ensured.

Further, by cooling the electric device 70 arranged on the rear side of the vehicle with the conditioned air of the rear seat air conditioning unit 50, the device cooling passage 59 that supplies the conditioned air of the rear seat air conditioning unit 50 to the electric device 70 is provided as much as possible. Can be shortened. Therefore, the mountability of the temperature control device 1 on the vehicle can be improved. Further, since the equipment cooling passage 59 can be shortened, the temperature change of the conditioned air supplied from the rear seat air conditioning unit 50 can be minimized, and the heat loss can be reduced.

Further, the rear seat air conditioning unit 50 that cools the electric device 70 is used as an auxiliary for air conditioning in the vehicle interior. Therefore, even if a part of the cooling capacity of the rear seat air conditioning unit 50 is used for cooling the electric device 70, the influence on the air conditioning in the vehicle interior can be minimized.

Further, in the present embodiment, the equipment cooling aisle 59 is branched on the downstream side of the air flow of the rear seat evaporator 17 in the rear seat casing 51. Therefore, the conditioned air cooled by the low-temperature refrigerant can be supplied to the electric device 70 by the rear seat evaporator 17, and the electric device 70 can be efficiently cooled.

Further, in the present embodiment, the passage opening / closing portion 60 is provided in the equipment cooling passage 59, and when the electric equipment 70 needs to be cooled, the conditioned air is allowed to flow into the equipment cooling passage 59. Therefore, when it is not necessary to cool the electric device 70, the conditioned air does not flow into the device cooling passage 59, and the influence on the air conditioning in the vehicle interior can be minimized.

Further, in the present embodiment, the downstream end of the air flow of the equipment cooling passage 59 is connected to the rear seat casing 51, and the conditioned air after cooling the electric equipment 70 is circulated to the rear seat air conditioning unit 50. It has become like. As a result, it is possible to prevent the conditioned air after cooling the electric device 70 from being blown out to the rear side of the vehicle (for example, in the trunk room).

(Second Embodiment)
Next, the second embodiment of the present invention will be described. The same parts as those in the first embodiment will be omitted, and only the different parts will be described.

As shown in FIG. 5, in the second embodiment, the equipment cooling aisle 59 branches on the air flow downstream side of the rear seat blower 53 and on the air flow upstream side of the rear seat evaporator 17 in the rear seat casing 51. ing. Therefore, in the second embodiment, the conditioned air before being cooled by the rear seat evaporator 17 is supplied to the electric device 70. That is, the electric device 70 is simply blown.

Further, in the second embodiment, the passage opening / closing portion 60 is not provided. Therefore, if the rear seat blower 53 is operating, conditioned air is always supplied to the electric device 70 from the rear seat air conditioning unit 50. If the amount of air blown to the electric device 70 is about 5 m ³ / h or less, the influence of the rear seat air conditioning unit 50 on the air conditioning in the vehicle interior is small.

According to the second embodiment described above, if the electric device 70 does not become so hot, the electric device 70 can be sufficiently cooled by the conditioned air before passing through the rear seat evaporator 17. it can.

Further, in the second embodiment, it is only necessary to operate the rear seat blower 53 to cool the electric device 70, and when the rear seat air conditioning unit 50 does not air-condition the vehicle interior, the electric device It is not necessary to supply the refrigerant to the rear seat evaporator 17 when the 70 is cooled.

Further, in the second embodiment, the passage opening / closing portion 60 is not provided. Therefore, it is not necessary to control the opening / closing of the passage opening / closing unit 60 by the air conditioning control device 80, and the configuration of the temperature control device 1 can be simplified.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be variously modified as follows without departing from the spirit of the present invention. In addition, the means disclosed in each of the above embodiments may be appropriately combined to the extent feasible.

For example, in the above embodiment, the conditioned air after cooling the electric device 70 is circulated to the rear seat air conditioning unit 50, but the conditioned air after cooling the electric device 70 is circulated to the rear seat air conditioning unit 50. It may not be circulated.

Further, in the above embodiment, the example in which two electric devices 70 are provided has been described, but the number of electric devices 70 may be one or three or more.

10 Refrigeration cycle device 17 Rear seat evaporator 20 Front seat air conditioning unit 50 Rear seat air conditioning unit 59 Equipment cooling aisle 60 Aisle opening / closing part 70 Electrical equipment

Claims (6)

The front seat air conditioning unit (20), which is located on the front side of the vehicle and mainly blows air conditioning air to the front seat side of the vehicle,
The rear seat air conditioning unit (50), which is located on the rear side of the vehicle and mainly blows air conditioning air to the rear seat side of the vehicle,
An electric device (70) that is located on the rear side of the vehicle and generates heat as it operates.
An equipment cooling aisle (59) for supplying the conditioned air cooled by the rear seat air conditioning unit to the electric equipment, and
A temperature control device equipped with. The rear seat air conditioning unit is provided with an evaporator (17) of the refrigeration cycle device (10).
The temperature control device according to claim 1, wherein the equipment cooling passage is branched on the downstream side of the air flow of the evaporator in the rear seat air conditioning unit. The temperature control according to claim 1 or 2, wherein the equipment cooling passage is provided with a passage opening / closing portion (60) that opens and closes the equipment cooling passage and switches whether or not to supply conditioned air to the electric equipment. apparatus. The rear seat air conditioning unit is provided with an evaporator (17) of the refrigeration cycle device (10).
The temperature control device according to claim 1, wherein the equipment cooling passage is branched and provided on the upstream side of the air flow of the evaporator in the rear seat air conditioning unit. The temperature control device according to any one of claims 1 to 4, wherein the equipment cooling passage circulates the conditioned air after cooling the electric equipment to the rear seat air conditioning unit. The temperature control device according to any one of claims 1 to 5, wherein the electric device is a control device that performs automatic driving control of the vehicle.

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