JP2008073234A - Seat heating device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat heating device for vehicles, which saves an energy while taking account of an occupant in the removal of flea, mite and the like. <P>SOLUTION: This seat heating device for vehicles includes a seat temperature-adjustment control part for controlling a heating operation for heating a seat 1 where an occupant sits during parking a vehicle, a thermal load calculation part 4 calculating a thermal load in a cabin, a parking determination part 5 determining the parking based on that no occupant sits therein, and a heating operation determination part 6 determining the start of the heating operation during the parking. When the thermal load found by the thermal load calculation part 4 is smaller than a prescribed thermal load, the heating operation determination part 6 determines a delay time from starting the parking till starting the heating operation longer compared with a case where it is larger than the prescribed thermal load. When elapsing the delay time determined by the heating operation determination part 6, the seat temperature-adjustment control part 3 controls a seat temperature adjustment device 2 to start the heating operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle seat heating apparatus having a function of heating a vehicle seat.

  In general, the interior of a car or the like is a non-residential space and is a space that is narrow and difficult to clean, and therefore tends to be less frequently cleaned than a room in a building. In addition, pests attached to the occupant's clothes and fleas and ticks on animals such as pet dogs and cats may enter the passenger compartment. Because of these factors, fleas, ticks and other pests may multiply in the passenger compartment and sting or bite the occupant. In addition, the living organisms, feces, and carcasses of pests cause problems as allergens that cause allergies. In particular, when seated on a seat, it may come into contact with an occupant, and there is an increasing demand for removing these factors.

  On the other hand, as a conventional device for removing fleas, ticks, etc., for example, as described in Patent Document 1, hot air is blown out, and the heat is transmitted to a futon or clothes through an air mat and dried. Dryers are known. This dryer can suppress the growth of fleas, ticks and the like attached to futons and clothes by warm air reaching a temperature at which fleas, ticks and the like die.

On the other hand, as a device for warming a vehicle seat, for example, as described in Patent Document 2, a vehicle seat air conditioner that supplies temperature-controlled air for passengers seated on a seat of an automobile or the like It has been known. The apparatus described in Patent Document 2 includes a plurality of Peltier modules as heat exchangers, and a blower that sends air temperature-adjusted by the heat exchangers to the surface side through a passage inside the seat. The operation is automatically adjusted by the temperature change control device.
Japanese Patent Laid-Open No. 5-68787 JP 10-504977 gazette

  Regarding the dryer described in Patent Document 1, it is inconvenient and impractical to bring the dryer equipped with technology suitable for drying futons and clothes into the vehicle and supply warm air to the vehicle seat. .

  Further, in the vehicle seat air-conditioning apparatus described in Patent Document 2, even if temperature control is performed to raise the seat temperature to such an extent that fleas, ticks, etc. are killed or stop working, there is a danger to the passenger due to heat. There was a problem that consideration was not made that would not reach.

  In addition, in a vehicle, there is a problem that the electric power that can be used to give heat to the seat is limited, and it is indispensable to reduce power consumption from the viewpoint of fuel saving.

  In view of the above problems, an object of the present invention is to provide a vehicular seat heating device that provides a sanitary space to an occupant, and that takes into consideration the occupant and saves power.

  In order to achieve the above object, the following technical means are adopted. That is, the invention relating to the vehicle seat heating apparatus includes a seat temperature control unit (3) for controlling a heating operation for heating a seat (1) on which an occupant is seated, and a thermal load calculation unit (4 ), And a parking determination unit (5) for determining that the vehicle is parked without being seated, and a thermal operation determination unit (6) for determining the start of the thermal operation while parked. The thermal operation determination unit (6) is configured such that when the thermal load obtained by the thermal load calculation unit (4) is smaller than the predetermined thermal load, the thermal operation determination unit (6) is larger than the predetermined thermal load. The delay time from the start of parking determined by the parking determination unit (5) to the start of thermal operation is determined to be longer, and the seat temperature control unit (3) further determines the determined delay time. It is characterized by starting thermal operation when That.

  Note that the heat load in the passenger compartment is obtained by using at least one information of solar radiation, passenger compartment temperature, outside air temperature, and seat temperature, for example. The thermal operation is an operation in which the temperature of the seat can be increased to a temperature at which the proliferation activity of pests such as fleas and ticks can be suppressed or a temperature at which the insect can be killed.

  According to the present invention, when the thermal load of the vehicle is large, the thermal operation after the start of parking is started early, and when the thermal load of the vehicle is small, the thermal operation after the start of parking is delayed and started. Because there is no need to carry out thermal operation in an environment where the temperature inside the vehicle is low, where no pests such as ticks are present or their growth is not active, wasteful thermal operation can be suppressed, and further, pest activity and proliferation can be suppressed. Since the thermal operation after parking is performed after detecting that the heat load is relatively large in an active environment, power saving can be achieved by appropriate operation after confirming the situation.

  Moreover, it is preferable that the said thermal operation determination part (6) determines delay time to a long time, so that the thermal load in a vehicle interior is small. According to the present invention, it is possible to further reduce power consumption by further suppressing unnecessary heat operation in an environment where it is not necessary to perform heat operation.

  Moreover, it is preferable that the said seat temperature control part (3) performs the judgment which prohibits a thermal operation, when the thermal load calculated | required by the thermal load calculation part (4) satisfy | fills the unnecessary condition of a thermal operation. The unnecessary condition of the thermal operation is when the vehicle interior environment can be expected to eliminate harmful insects without carrying out the thermal operation.For example, when parking in hot weather, the vehicle interior is fleas, mites, etc. The condition is such that the heat load of the environment can be killed. According to the present invention, it is possible to suppress useless operation in an environment where it is not necessary to perform thermal operation.

  Moreover, it is preferable that the said thermal operation determination part (6) determines delay time based on the thermal load calculated | required by the thermal load calculation part (4) before parking. According to the present invention, since the thermal load obtained before parking is used, it is not necessary to supply power to the device equipped with the thermal operation determination unit during parking, and power saving can be achieved.

  The seat temperature control unit (3) is configured such that the thermal load obtained by the thermal load calculation unit (4) during parking is greater than the thermal load obtained by the thermal load calculation unit (4) before parking. When it becomes, it is preferable to start the thermal operation. According to this invention, it is possible to carry out a more realistic thermal operation reflecting the thermal load during parking.

  Moreover, it is preferable that the said seat temperature control part (3) shortens the driving | running time of a thermal operation, so that the delay time determined by the thermal operation determination part (6) is short. According to the present invention, if the determined delay time is short, the heat load in the passenger compartment is large. Therefore, by using the amount of heat given to the seat in a state where the heat load is large even for a short time, power can be saved for a short time. Operation can be carried out.

  In order to achieve the above object, the invention relating to the vehicle seat heating apparatus includes a seat temperature control unit (3) for controlling a heating operation for heating a seat (1) on which the occupant is seated, and an occupant seated. A parking determination unit (5) for determining that the vehicle is parked in a non-existing state, and a thermal operation determination unit (6) for determining the operation time of the thermal operation, and the thermal operation determination unit (6) starts parking It is the time from the start to the thermal operation, and the longer the delay time set by the occupant, the shorter the operation time of the thermal operation is determined, and the seat temperature adjustment control unit (3) When the dynamic time has elapsed, the thermal operation is started, and after the thermal operation has started, the thermal operation is stopped when the determined operation time has elapsed.

  According to the present invention, if the delay time set by the occupant is long, the total amount of heat given to the seat during that time becomes large. By using this, a short power saving operation can be performed.

  In addition, the code | symbol in the parenthesis of each said means is an example which shows a corresponding relationship with the specific means of embodiment mentioned later.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 5, 7, and 8. FIG. 1 is a conceptual diagram illustrating a configuration of a vehicle seat heating apparatus that can warm a seat of an automobile or the like to a high temperature equal to or higher than a predetermined temperature. The configuration of the vehicle seat heating apparatus shown in FIG. 1 can be applied to the vehicle seat heating apparatus described in the second embodiment and the third embodiment in addition to the present embodiment.

  As shown in FIG. 1, a vehicle seat heating device is a device that performs a heating operation in which a passenger is seated and warms a seat 1 having a seating portion and a backrest portion during parking. ), A thermal load calculation unit 4 for determining the thermal load in the passenger compartment, a parking determination unit 5 for determining that the occupant is not seated and the vehicle is parked, And a thermal operation determination unit 6 that determines the start of the internal thermal operation.

  The seat temperature adjustment control unit 3 includes a thermal load calculation unit 4, a parking determination unit 5, and a thermal operation determination unit 6, and is a control device that controls the seat temperature adjustment device 2, and also controls normal seat air conditioning. There may be a configuration integrated with the air conditioner air conditioning control device. Information related to the heat load in the passenger compartment and information that can be used to determine whether the vehicle is in a parking state are input to the seat temperature control unit 3.

  The information on the thermal load is various information indicating the temperature environment of the seat 1 such as a thermal factor entering the vehicle interior from the outside. For example, the solar radiation information detected in the vehicle interior detected by the solar radiation sensor, the vehicle interior temperature information, The outside temperature information detected by the outside temperature sensor, the temperature of the sheet 1 detected by the infrared sensor, and the like. Information related to parking determination is information that can determine whether or not a person is present, and includes, for example, whether an ignition switch is in an OFF state, whether it is in a key lock state, a detection result of a seating sensor, or the like.

  The heat load calculation unit 4 is input with at least one information of solar radiation information, vehicle interior temperature, outside air temperature, and seat temperature, and uses a pre-stored control characteristic map (see FIG. 3) for determining the vehicle heat load. Thus, the heat load TL is obtained. The state of the ignition switch, the detection result of the seating sensor, and the like are input to the parking determination unit 5, and it is determined whether or not the vehicle is in the parking state when no passenger is seated on the seat 1.

  When the thermal load calculated by the thermal load calculation unit 4 is smaller than the predetermined thermal load, the thermal operation determination unit 6 compares the parking determined by the parking determination unit 5 with a case where the thermal load is larger than the predetermined thermal load. The delay time from the start to the start of the thermal operation is determined to be long. The seat temperature adjustment control unit 3 executes control for starting the thermal operation on the seat temperature adjustment device 2 when the delay time determined by the thermal operation determination unit 6 has elapsed.

  The heat operation is an operation in which the seat temperature control device 2 provides heat to the seat 1. This operation is different from a normal seat air conditioning operation in which conditioned air is supplied to an occupant seated in the seat 1 through an air passage formed in the seat 1, and the seat 1 itself is in a relatively high temperature state when the occupant is absent. Then, it is carried out in order to remove harmful insects such as fleas, mites, etc. present on the sheet 1 by heat. Generally, it is said that an environment of 25 ° C. to 30 ° C. and 60% to 85% is suitable for breeding ticks and the like, and the thermal operation can exclude this environment.

  In this thermal operation, heat is provided so that the temperature of the interior or surface of the sheet 1 is 50 ° C. or higher, and preferably heat in the range of 50 ° C. to 60 ° C. is provided. When the seat 1 is brought to such a temperature, fleas, ticks and the like existing in the seat 1 can be killed by entering the vehicle interior together with the occupants and pets. By killing these pests, the occupant can be prevented from being stabbed or bitten, and the living organisms and feces of the pests that become allergens can be suppressed. In particular, the passenger compartment is a narrow space, and allergens are likely to float due to outside winds or air-conditioning winds entering through the windows. Has no effect on sexual damage or other discomfort.

  In addition, in the heat operation, heat in which the temperature inside or the surface of the sheet 1 is in a range of 40 ° C to 50 ° C may be provided. By setting the sheet 1 to such a temperature, it is possible to suppress the growth of fleas, ticks and the like and to expect a growth suppressing effect.

  The seat temperature adjusting device 2 may be provided in the seat 1 or in the vicinity thereof, or may be arranged away from the seat 1 so that warm air can be blown into the seat 1 via a duct or the like. The sheet temperature control device 2 includes heat generation means for supplying heat to the air and air blowing means such as a blower for sending warm air into the seat 1. In this way, when the heat generated by the heat generating means is supplied to the inside of the sheet 1 as hot air, the pests such as ticks are allowed to escape from the back side of the sheet 1 by flowing the hot air toward the front side where the solar radiation hits. Because it loses, a greater effect of pest removal is obtained.

  As the heat generating means, a heat exchanger constituted by a Peltier module, a PTC heater, or the like, or a planar heating element such as a planar heater can be adopted. When a planar heating element is employed, heat can be supplied to the inside of the sheet 1 in combination with the air blowing means, and the sheet 1 can be directly disposed by appropriately arranging the inside of the sheet 1. It can be heated, or a blowing means can be dispensed with.

  The sheet 1 includes a main pad and a cover pad, which are cushioning materials such as urethane, and a skin member covering the main pad and a predetermined thickness having air permeability. The main pad is formed in a predetermined shape, and an air passage communicating with the blowing means is formed in the main pad. The main pad mainly holds the shape of the seating portion and the backrest portion, and has a function of a buffer member that absorbs vibration to the occupant.

  A large number of small holes are formed in the skin member, and the air passage communicates with the vehicle interior space via the skin member and the cover pad. In addition, the skin member may be formed of a breathable fabric so as to form a large number of small holes communicating with the air passage.

  The air blowing means of the seat temperature control device 2 may use the air blowing means of a normal seat air conditioner. The heat generating means of the seat temperature adjusting device 2 may be configured by the seat temperature adjusting control unit 3 controlling a Peltier module used in a normal seat air conditioner. Thereby, it is not necessary to separately provide a heat generating means, and the number of parts can be reduced.

  Next, the thermal operation (operation during parking) of the vehicle seat heating apparatus will be described. FIG. 2 is a flowchart showing a processing procedure of a thermal operation (operation during parking) by the seat temperature control device 2. As shown in FIG. 2, the parking determination unit 5 of the control device first determines whether or not the current time is parked in step S <b> 10. This determination is performed when information indicating the state of the ignition switch, the detection result of the seating sensor, or the like is input to the parking determination unit 5, for example, when the seating sensor detects that no occupant is seated. Is OFF, it is determined that the vehicle is parked, for example, in a key lock state.

  First, when the occupant is driving the vehicle, the ignition switch is ON, and the seating sensor detects the occupant's seating. Therefore, the parking determination unit 5 determines that the vehicle is not parked, and the seat temperature control unit 3 initializes the parking time (step S12). Next, the seat temperature control unit 3 acquires information related to the thermal load in the passenger compartment in step S13. For example, at least one information of solar radiation, vehicle interior temperature, outside air temperature, and seat temperature is read. The reading of the heat load information in step S13 is acquisition of the heat load information in the pre-parking state.

  Then, the thermal load calculation unit 4 calculates the thermal load TL of the vehicle from the thermal load information read in step S13 and the control characteristic map shown in FIG. 3 (step S14). This map is stored in advance in the control device, and is a map showing the relationship between the heat load and at least one of the information on solar radiation, vehicle interior temperature, and outside air temperature. Values such as solar radiation can be increased. The more the heat load is calculated, the more the value is calculated.

This control characteristic map is
Thermal load = K x Solar radiation + L x Car interior temperature + M x Outside air temperature + N
(K, L, M, and N are constants) is a map reflecting a calculation formula stored in advance. Alternatively, when the calculation is performed using the map of FIG. 3, the same result as that obtained when the calculation formula is used can be obtained.

  Further, in step S15, the thermal operation determination unit 6 determines a delay time TD from the start of parking until the start of thermal operation. This delay time is determined from the control characteristic map of any of FIGS. 4 and 5 and the heat load TL obtained in step S14. These maps are stored in the control device in advance, and are maps representing the relationship between the thermal load TL and the delay time TD.

These control characteristic maps are
Delay time = S x Thermal load + T
It is a map reflecting a calculation formula stored in advance such as (S and T are constants). Alternatively, when the calculation is performed using the map of FIG. 4 or FIG. 5, the same result as that obtained when the calculation formula is used is obtained.

  The map of FIG. 4 has a characteristic that the delay time TD is calculated to be shorter when the heat load TL is larger than the threshold value TL1 than when the heat load TL is smaller than the threshold value TL1. The longer the heat load TL, the shorter the delay time TD is calculated.

  On the other hand, the map of FIG. 5 shows that the delay time calculated when the thermal load TL is larger than this range with respect to the delay time calculated when the thermal load TL is within a certain range, for example, the range of TL2 to TL3. The time TD is calculated as a shorter time, and conversely, if the calculated heat load TL is smaller than this range, the delay time TD is calculated as a longer time. In other words, the map of FIG. 5 is a map that is determined so that the delay time TD decreases stepwise as the heat load TL increases. As described above, when the calculated heat load TL is smaller than the predetermined heat load, the delay time TD is determined to be longer than that when the calculated heat load TL is larger than the predetermined heat load.

  The seat temperature adjustment control unit 3 repeats steps S12 to S15 until the parking determination unit 5 determines in step S10 that the parking determination unit 5 is parking. And if the parking judgment part 5 judges that it is parking, the seat temperature control part 3 will start the count of parking time (step S20). Next, the seat temperature control unit 3 determines whether or not the delay time TD determined in step S15 has elapsed since the counting of the parking time was started (step S30). If the delay time TD has not yet elapsed, the process returns to step S10.

  On the other hand, when it is determined that the delay time TD has elapsed, the seat temperature adjustment control unit 3 controls the seat temperature adjustment device 2 to start the thermal operation, that is, the parking operation (step S40). ). When the parking operation is started, the seat temperature control unit 3 determines whether or not the time from the start of the parking operation has reached the operation setting time TO of the parking operation (step S50). The operation set time TO is a predetermined set time stored in advance in the seat temperature adjustment control unit 3 and is, for example, 30 minutes.

  Further, the operation set time TO can be a value that varies based on the delay time TD obtained in step S15. In this case, the control characteristic map shown in FIG. 7 or FIG. 8 is stored in the seat temperature adjustment control unit 3, and the operation setting time TO is determined using any one of the maps.

  The map of FIG. 7 has a characteristic that the operation setting time TO is calculated longer when the value of the obtained delay time TD is shorter than when the value of the delay time TD is shorter than a certain delay time. The longer the moving time TD, the longer the operation set time TO is calculated.

  On the other hand, the map of FIG. 8 has a characteristic of calculating the operation setting time TO shorter when the value of the obtained delay time TD is shorter than when the value of the delay time TD is shorter than a certain delay time. The longer the delay time TD, the shorter the operation set time TO is calculated.

  Note that the map of FIG. 7 may be a map that is determined so that the operation set time TO increases stepwise as the delay time TD increases. Further, the map of FIG. 8 may be a map that is determined so that the operation set time TO decreases stepwise as the delay time TD increases.

  If it is determined in step S50 that the set time TO has not been reached after the parking operation has started, the parking operation is continued (step S55), and the process returns to the determination in step S10. If the parking state is canceled, the parking operation is stopped in step S12. If the parking state is continued, the parking operation is continued until the set time TO is reached after the parking operation is started.

  In step S50, if it is determined that the set time TO has been reached after the parking operation has started, the parking operation is stopped (step S60), the process returns to the determination in step S10, and the parking operation is continued. The above processing procedure will be executed.

  As described above, in the present embodiment, the thermal operation determination unit 6 has a smaller thermal load than the predetermined thermal load when the thermal load obtained by the thermal load calculation unit 4 is smaller than the predetermined thermal load. The delay time from the start of parking determined by the parking determination unit 5 to the start of thermal operation is determined to be longer. Further, the seat temperature adjustment control unit 3 starts the heating operation when the determined delay time TD has elapsed.

  According to this control, when the thermal load is small, the thermal operation after the start of parking is started late so that the thermal operation is performed in an environment where the pests are not present or the propagation is not active and the interior temperature is low. Since there is no need, it is possible to save power by suppressing unnecessary heating operation. In addition, if the thermal load is large, the thermal operation after parking is started early, so that it is detected that the thermal load is relatively large in an environment where pest activity and multiplication is active, and then the thermal operation after parking is performed. Therefore, it is possible to save power by appropriate operation after confirming the situation.

  Moreover, it is preferable that the thermal operation determination unit 6 determines the delay time TD to be longer as the thermal load in the vehicle compartment is smaller. When this control is adopted, the thermal operation in an environment where it is not necessary to perform the thermal operation can be suppressed.

  Moreover, it is preferable that the thermal operation determination unit 6 determines the delay time TD based on the thermal load obtained by the thermal load calculation unit 4 before parking. When this control is adopted, it is not necessary to supply electric power for obtaining a heat load at the time of parking, so that power saving can be achieved.

  Further, it is preferable that the seat temperature adjustment control unit 3 shortens the operation setting time TO of the thermal operation as the determined delay time TD is shorter. When this control is adopted, if the delay time TD is short, the heat load in the passenger compartment is large, so that a short time operation using the amount of heat given to the seat 1 can be performed even in a short time in a situation where the heat load is large. .

(Second Embodiment)
A heating operation (operation during parking) of the vehicle seat heating apparatus according to the second embodiment will be described with reference to FIG. FIG. 6 is a flowchart showing a processing procedure of a thermal operation (operation during parking) by the seat temperature control device 2.

  As shown in FIG. 6, the parking determination unit 5 of the control device first determines whether or not the current time is parked in step S <b> 10. When the occupant is driving the vehicle, the ignition switch is ON and the occupant's seating is detected by the seating sensor. Therefore, the parking determination unit 5 determines that the vehicle is not parked, and the seat temperature control unit 3 initializes the parking time (step S12). Thereafter, each process from step S13 to S15 is executed in the same manner as in the first embodiment.

  Next, it is determined whether or not the thermal load obtained in step S14 is smaller than a predetermined thermal load stored in advance (step S16). When the obtained heat load is equal to or greater than the predetermined heat load, it is considered that the thermal operation (parking operation) unnecessary condition is satisfied, the parking operation is prohibited, and the process returns to step S10.

  When this thermal driving (parking driving) unnecessary condition is satisfied, the vehicle interior is an environment that can suppress the growth and activity against pests such as ticks without carrying out thermal driving. This is an environment where fleas, ticks, etc. can be killed, such as when parking in the city, and priority is given to prohibiting thermal operation from the viewpoint of power saving. On the other hand, when it is determined that the obtained heat load is smaller than the predetermined heat load, the seat temperature adjustment control unit 3 permits the parking operation (step S17), and returns to the process of step S10.

  The seat temperature adjustment control unit 3 repeats steps S12 to S17 until the parking determination unit 5 determines in step S10 that the parking determination unit 5 is parking. And if the parking judgment part 5 judges that it is parking, it will be judged whether permission of driving | running | working at the time of parking was performed next (step S11). When the parking operation is permitted, the seat temperature control unit 3 starts counting the parking time (step S20). Thereafter, each process from step S30 to S60 is executed as in the first embodiment. And it returns to judgment of step S10, and the said process sequence for the driving | operation at the time of parking will be continued.

  As described above, in the present embodiment, the seat temperature adjustment control unit 3 determines that the thermal operation (parking operation) is prohibited when the thermal operation unnecessary condition that the thermal load in the passenger compartment is equal to or higher than the predetermined thermal load is satisfied. Do. According to this control, it is possible to suppress useless driving in an environment where the environment in the vehicle compartment is a severe condition for pests and it is not necessary to perform driving during parking.

(Third embodiment)
A thermal operation (operation during parking) of the vehicle seat heating apparatus according to the third embodiment will be described with reference to FIG. FIG. 9 is a flowchart illustrating a processing procedure of a thermal operation (operation during parking) by the seat temperature adjustment device 2.

  As shown in FIG. 9, the parking determination unit 5 of the control device first determines whether or not the current time is parked in step S10. When the occupant is driving the vehicle, the ignition switch is ON and the occupant's seating is detected by the seating sensor. Therefore, the parking determination unit 5 determines that the vehicle is not parked, and the seat temperature control unit 3 initializes the parking time (step S12). Subsequently, each process from step S13 to S15 is executed in the same manner as in the first embodiment, and the process returns to step S10.

  The seat temperature adjustment control unit 3 repeats steps S12 to S15 until the parking determination unit 5 determines in step S10 that the parking determination unit 5 is parking. And if the parking judgment part 5 judges that it is parking, it will carry out in order, S21 which will perform the process similar to step S13, and S22 which will perform the process similar to step S14 will be carried out in order. Calculate the thermal load in the room.

  Next, the seat temperature control unit 3 determines whether or not the parking time from the start of parking has reached the delay time TD determined in step S15 (step S23). If the delay time TD has not yet elapsed, the process returns to step S21.

  On the other hand, if it is determined that the delay time TD has elapsed, the seat temperature adjustment control unit 3 determines that the heat load during parking obtained in step S22 is the heat immediately before parking obtained in step S14. It is determined whether or not it is larger than the load (step S24). This step S24 is repeatedly executed while continuing to read the vehicle heat load information until the heat load during parking becomes larger than the heat load before parking. And if the thermal load during parking becomes larger than the thermal load immediately before parking, the seat temperature control unit 3 starts a thermal operation (operation during parking) (step S40).

  Thereafter, each processing from step S50 to S60 is executed as in the first embodiment. And it returns to judgment of step S10, and the said process sequence for the driving | operation at the time of parking will be continued.

  As described above, in the present embodiment, the seat temperature control unit 3 performs the thermal operation (operating during parking) when the thermal load obtained during parking becomes larger than the thermal load obtained before parking. To start. According to this control, it is possible to carry out a more realistic thermal operation reflecting the thermal load during parking.

(Fourth embodiment)
The vehicle seat heating apparatus according to the fourth embodiment can set a delay time until the occupant starts the heating operation from the start of parking with respect to the vehicle seat heating apparatus according to the first to third embodiments. The point is different.

  That is, the seat temperature adjustment control unit 3 that controls the thermal operation for heating the seat 1, the parking determination unit 5 that determines that the vehicle is parked in a state where no occupant is seated, and the thermal operation that determines the operation time of the thermal operation And a determination unit 6. Further, unlike the configuration shown in FIG. 1, a delay time setting unit is provided instead of the thermal load calculation unit 4.

  For example, when the occupant operates the delay time setting volume provided on the instrument panel, the delay time from the start of parking to the start of the thermal operation is set by the delay time setting unit. Then, the thermal operation determination unit 6 determines that the operation time of the thermal operation becomes shorter as the set delay time is longer. When the determined delay time has elapsed, the seat temperature adjustment control unit 3 starts the thermal operation (operating at the time of parking), and stops the thermal operation when the determined operation time has elapsed after the start of the thermal operation.

  As described above, in the vehicle seat heating apparatus of the present embodiment, the lag time from the start of parking until the start of the thermal operation is set by the occupant, and the thermal operation determination unit 6 increases as the set delay time increases. Decide to shorten the operation time of the thermal operation.

  According to this control, if the delay time set by the passenger is long, the total amount of heat given to the seat 1 during that time increases. By utilizing this, a short-time power-saving thermal operation can be achieved.

It is the conceptual diagram which showed the structure of the vehicle seat heating apparatus of 1st Embodiment to 3rd Embodiment. It is the flowchart which showed the control process of the thermal driving | operation in the vehicle seat heating apparatus of 1st Embodiment. It is a map which calculates | requires the thermal load of the vehicle in each embodiment. It is a map which calculates | requires the delay time of the thermal driving | operation in each embodiment. It is another example of the map which calculates | requires the delay time of the thermal driving | operation in each embodiment. It is the flowchart which showed the control process of the thermal driving | operation in the vehicle seat heating apparatus of 2nd Embodiment. It is a map which calculates | requires the driving | running time of the thermal driving | operation in each embodiment. It is another example of the map which calculates | requires the driving | running time of the thermal operation in each embodiment. It is the flowchart which showed the control process of the thermal driving | operation in the vehicle seat heating apparatus of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seat 3 ... Seat temperature control part 4 ... Thermal load calculation part 5 ... Parking judgment part 6 ... Thermal operation judgment part

Claims (7)

A seat temperature control unit (3) for controlling a thermal operation for heating the seat (1) on which a passenger in the passenger compartment is seated;
A heat load calculation unit (4) for obtaining a heat load in the vehicle interior;
A parking determination section (5) for determining that the passenger is parked without being seated;
A thermal operation determination unit (6) for determining a start time of the thermal operation during parking, and
When the thermal load determined by the thermal load calculation unit (4) is smaller than the predetermined thermal load, the thermal operation determination unit (6) compares the parking with the larger than the predetermined thermal load. The delay time from the start of parking determined by the determination unit (5) to the start of the thermal operation is determined to be long,
The vehicle seat heating apparatus according to claim 1, wherein the seat temperature control unit (3) starts the heating operation when the determined delay time has elapsed.   2. The vehicle seat heating apparatus according to claim 1, wherein the thermal operation determination unit (6) determines the delay time to be longer as the thermal load in the vehicle compartment is smaller.   The seat temperature adjustment control unit (3) makes a determination of prohibiting the thermal operation when the thermal load obtained by the thermal load calculation unit (4) satisfies an unnecessary condition of the thermal operation. Item 3. The vehicle seat heating apparatus according to Item 1 or 2.   The thermal operation determination unit (6) determines the delay time based on the thermal load obtained by the thermal load calculation unit (4) before parking. The vehicle seat heating apparatus according to one item.   In the seat temperature control unit (3), the thermal load obtained by the thermal load calculation unit (4) during parking is larger than the thermal load obtained by the thermal load calculation unit (4) before parking. 5. The vehicle seat heating apparatus according to claim 1, wherein the heating operation is started when the vehicle temperature becomes.   The said seat temperature control part (3) shortens the operation time of the said thermal operation, so that the delay time determined by the said thermal operation judgment part (6) is short. The vehicle seat heating apparatus according to claim 1. A seat temperature control unit (3) for controlling a thermal operation for heating the seat (1) on which the occupant is seated;
A parking determination section (5) for determining that the passenger is parked without being seated;
A thermal operation determination unit (6) for determining an operation time of the thermal operation,
The thermal operation determination unit (6) is a time from the start of parking determined by the parking determination unit (5) to the start of the thermal operation, and the longer the delay time set by the occupant, the longer the thermal operation To shorten the operation time of
The seat temperature control unit (3) starts the thermal operation when the determined delay time elapses, and stops the thermal operation when the determined operation time elapses after the thermal operation starts. A vehicle seat heating apparatus.

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