JP5898145B2 - Control device that controls color based on temperature of air conditioner - Google Patents

Description

  The present invention relates to a control device for controlling a color displayed on a display unit based on a temperature of an air conditioner such as a set temperature and a blow-out temperature.

  For example, FIG. 4 of Patent Document 1 discloses an auto air conditioner 35 (air conditioner). According to the description of paragraph [0025] of Patent Document 1, the controller 30 (control device) connected to the auto air conditioner 35 is a heating device. The color displayed by the light source 10 (display unit) can be controlled based on the air volume of the auto air conditioner 35 which is the mode. For example, when the air volume is 5 or 4, the controller 30 turns on the amber LED 21 of the light source 10 with the maximum luminance. When the air volume is 3 or 2, the controller 30 turns on the amber LED 21 of the light source 10 with a luminance of 50% and turns on the blue LED 22 of the light source 10 with a luminance of 20%.

  Further, according to paragraph [0028] of Patent Document 1 and the flowchart of FIG. 5, when the air volume of the auto air conditioner 35 in the cooling mode is 5 or 4, the controller 30 causes the blue LED 21 of the light source 10 to have the maximum luminance. Light up. When the air volume is 3 or 2, the controller 30 turns on the blue LED 21 of the light source 10 with a luminance of 50% and turns on the amber LED 22 of the light source 10 with a luminance of 20%.

  Incidentally, in recent years, vehicles such as automobiles have a so-called idling stop function, and when the vehicle stops, the engine of the vehicle can automatically stop. The idling stop function may be called a no idling function or an idle reduction function.

  For example, FIG. 1 of Patent Document 2 discloses an electronic control unit (ECU) 50 that can automatically stop the engine 11. FIG. 3 of Patent Document 2 discloses, for example, steps S1, S4, S5a, S6, S7, S8, S9, and S10 as idling stop permission conditions, and paragraphs [0033] and [0037] to [0037] of Patent Document 2 are disclosed. According to the description of [0042] and the like, the idling stop permission condition is that the state of the non-driving range such as “N” switched from the driving range such as “D” continues for a predetermined period T1 or more when the vehicle speed is zero. That is.

  Similarly, FIG. 3 of Patent Document 2 discloses, for example, steps S1, S4, S5b, S6, and S11 as idling stop prohibiting conditions. According to the description of paragraph [0043] and the like of Patent Document 2, idling stop prohibiting conditions are disclosed. Is that the non-driving range is switched to the driving range in a state where the idling stop permission condition is satisfied when the vehicle speed is zero. When the idling stop prohibition condition is satisfied, the electronic control unit 50 can restart the engine 11 and prohibit the stop of the engine 11.

  A vehicle air conditioner such as the auto air conditioner 35 of Patent Document 1 generally has a compressor driven by an engine. Therefore, when the idling stop permission condition is satisfied and the engine is automatically stopped, the auto air conditioner 35 in the cooling mode of Patent Document 1, for example, can maintain the vehicle room temperature (room temperature) even if the air volume can be continued. The set temperature cannot be maintained.

  In particular, according to the description in paragraph [0015] of Patent Document 1, the controller 30 changes the illuminance of the illumination light of the light source 10 based on the difference between the set temperature and the vehicle room temperature. Therefore, when the idling stop permission condition is satisfied and the engine automatically stops, that is, when the compressor of the auto air conditioner 35 stops, for example, in the auto air conditioner 35 in the cooling mode, for example, the difference between the set temperature and the vehicle room temperature. Increases and the illuminance of the illumination light of the light source 10 changes.

  However, when the engine does not stop, that is, when, for example, the compressor of the auto air conditioner 35 does not stop, the difference between the set temperature and the vehicle room temperature increases due to factors such as an increase in outdoor air temperature and an increase in the amount of solar radiation. The illuminance of the illumination light can change. Therefore, when the difference between the set temperature and the vehicle room temperature increases, the driver or other occupant is the cause of the increase in outdoor air temperature, or the cause of establishment of the idling stop permission condition. I can't understand.

  Further, depending on the occupant, the vehicle room temperature rises when the set temperature is constant, so the set temperature is lowered to lower the vehicle room temperature. In particular, when the idling stop prohibition condition includes that the difference between the set temperature and the vehicle room temperature is equal to or greater than a predetermined value, the occupant lowers the set temperature, whereby the engine is restarted and fuel consumption is reduced.

Japanese Patent Laid-Open No. 2004-237891 Japanese Patent Laid-Open No. 11-270378

  One object of the present invention is to provide a control device that controls the color based on the temperature of the air conditioner and that allows the passenger to easily recognize the operating state of the air conditioner. Other objects of the present invention will become apparent to those skilled in the art by referring to the aspects and best embodiments exemplified below and the accompanying drawings.

  In the following, in order to easily understand the outline of the present invention, embodiments according to the present invention will be exemplified.

1st aspect WHEREIN: It is a control apparatus which controls the display part of the said air conditioner which displays the color which can be changed based on the setting temperature or blowing temperature of the air conditioner provided in the vehicle as a display color, Comprising: The said vehicle stops When the idling stop permission condition is satisfied, the display section is controlled so that the display section displays a fixed color as the display color, and when the vehicle idling stop prohibition condition is satisfied, the display section Displays the color that can be changed based on the blowing temperature as the display color, and when the predetermined time has elapsed after the idling stop prohibition condition of the vehicle is satisfied, the display unit is based on the blowing temperature. The changeable color is displayed as the display color.

According to the first aspect, the control device causes the display unit to display a fixed color when the vehicle idling stop permission condition is satisfied. Therefore, when the occupant looks at the fixed color displayed on the display unit, the occupant can recognize that the idling stop permission condition is satisfied. Here, when the idling stop permission condition is satisfied, the engine of the vehicle is stopped, for example, the compressor of the air conditioner is also stopped. Thus, for example, when not uncooled air but uncooled air is blown out from the outlet, for example, when a wind that does not have a low set temperature reaches the occupant, the occupant confirms that the operating state of the air conditioner is normal. It can be easily recognized. If the display unit continues to display a color that can change based on the temperature of the air conditioner, and an uncooled wind reaches the passenger, for example, the passenger is in an abnormal operating state of the air conditioner, that is, the air conditioner Will recognize that it is out of order or that the set temperature is high, for example.
In addition, the temperature is a blowing temperature of the air conditioner, and when the control device does not display a fixed color on the display unit, the display unit can display a color that can be changed based on the blowing temperature. In this case, since the color changes based on the blowing temperature, the occupant can recognize the blowing temperature as the operating state of the air conditioner. Further, the blowing temperature may be set according to the set temperature of the air conditioner. In this case, the color displayed by the display unit is based not only on the blowing temperature but also on the set temperature that is the source of the blowing temperature. The occupant can recognize the blowing temperature according to the set temperature as the operating state of the air conditioner.
Further, the control device can cause the display unit to display a color that can be changed based on the blowing temperature instead of a fixed color when the idling stop prohibition condition of the vehicle is satisfied. Therefore, when the occupant sees a color other than the fixed color displayed on the display unit, the occupant confirms that the idling stop prohibition condition is satisfied, that is, the vehicle engine is restarted and the air conditioner is operating. Can be recognized as normal. Moreover, at the time when the idling stop prohibition condition of the vehicle is satisfied, the temperature of the wind blown out from the blowout port of the air conditioner does not coincide with the blowout temperature. In other words, even if the compressor is restarted, for example, the air blown from the air outlet of the air conditioner does not immediately cool. After considering such a time lag, in the fifth aspect, the display unit can display a color that can be changed based on the blowing temperature.

In a second aspect dependent on the first aspect, said predetermined time, the wind having the outlet air temperature may be the air conditioner air outlet is start time blown from.

Since the predetermined time corresponding to the time lag can be set based on, for example, experimental results, when the temperature of the wind blown from the blowout port of the air conditioner matches the blowout temperature, in the second aspect, the display unit A color that can be changed based on the blowing temperature can be displayed.

In a third aspect that depends on the first aspect, the controller, when the state of the startable switch engine of the vehicle is changed from the OFF state to the ON state, the plurality of changes to the predetermined period based on the start mode The display unit may be controlled such that the display unit displays the color as the display color.

In the third aspect, when a switch capable of starting the engine is turned on, the display unit can display a plurality of colors within a predetermined period. Thereby, the passenger | crew can recognize that the power supply was turned on to the air conditioner as an operation state of an air conditioner. In addition, since the display unit displays a plurality of colors when the air conditioner is activated, the occupant can recognize whether or not the display unit is out of order. In other words, the occupant can recognize whether or not the idling stop permission condition is satisfied after recognizing that the display unit has not failed. In addition, the display unit that displays a plurality of colors that change within a predetermined period based on the activation mode can provide a sense of hospitality to the occupant who starts the engine.

  Those skilled in the art will readily understand that the illustrated embodiments according to the present invention can be further modified without departing from the spirit of the present invention.

The structural example of the air conditioner according to this invention is shown. The structural example of the display and operation part of FIG. 1 is shown. The explanatory view of the display color based on the blowing temperature displayed on the display part of Drawing 2 is shown. The explanatory view of the display color based on the vehicle state displayed on the display part of Drawing 2 is shown. The flowchart showing the operation example of the air conditioner of FIG. 1 is shown. The explanatory view of the display color based on the other vehicle state displayed on the display part of Drawing 2 is shown.

  The best mode described below is used to easily understand the present invention. Accordingly, those skilled in the art should note that the present invention is not unduly limited by the embodiments described below.

  FIG. 1 shows a configuration example of an air conditioner according to the present invention. As shown in FIG. 1, the air conditioner includes a control unit 10 that controls the display color of the display unit 40 based on the temperature of the air conditioner. Moreover, when the idling stop permission condition of a vehicle is satisfied, the control unit 10 controls the display unit 40 so that the display unit 40 displays a fixed color as a display color. In FIG. 1, the control unit 10 of the air conditioner handles both a color that can be changed based on the temperature of the air conditioner (normal color) and a fixed color, but may handle only a fixed color. In other words, the control unit 10 includes an air conditioner control unit that handles a changeable color (normal color) based on the temperature of the air conditioner and a control unit that handles only a fixed color (a control unit connected to the air conditioner). The control unit 10 may be a control device that handles only a fixed color.

  The control unit 10 (also referred to as the control device 10) according to the present invention causes the display unit 40 to display a fixed color when the idling stop permission condition of the vehicle is satisfied. Therefore, when the occupant looks at the fixed color displayed on the display unit 40, the occupant can recognize that the idling stop permission condition is satisfied. Here, when the idling stop permission condition is satisfied, the engine 20 of the vehicle is stopped, and the temperature control unit 12 such as a compressor of the air conditioner is also stopped. For example, when the temperature control unit 12 generates a cooling source having a low temperature, for example, not cold air, but uncooled air is blown out from the air outlet of the air conditioner, and for example, a low-temperature wind having a set temperature reaches the occupant. Sometimes, the occupant can easily recognize that the operating state of the air conditioner is normal.

  If the display unit 40 continues to display a color that can change based on the temperature of the air conditioner, and the uncooled wind reaches the occupant, for example, the occupant is in an abnormal state of operation of the air conditioner. Recognize that the device has failed or that the set temperature is high, for example.

  In FIG. 1, the control unit 10 or the control device 10 of the air conditioner is connected to, for example, the engine ECU 22 that determines whether or not the idling stop permission condition is satisfied, and controls the air conditioner when the idling stop permission condition is satisfied. The unit 10 or the control device 10 can input an idling stop permission signal from the engine ECU 22. The control unit 10 or the control device 10 of the air conditioner may determine whether or not the idling stop permission condition is satisfied instead of the engine ECU 22.

  The engine ECU 22 in FIG. 1 controls the engine 20. Specifically, the engine ECU 22 can stop the engine 20 when the idling stop permission condition is satisfied, and then restart the engine 20 when the idling stop prohibition condition is satisfied.

  One example of the idling stop permission condition is, for example, that the speed of the vehicle is a predetermined speed (for example, 10 [km / h]) or less. Accordingly, when the driver depresses a brake pedal (not shown) when the vehicle speed is, for example, 20 [km / h], and then the vehicle speed decreases to 10 [km / h], the engine ECU 22 Can be stopped. Thereby, for example, fuel consumption by the engine 20 can be suppressed. Of course, the predetermined speed can be set to 0 [km / h], for example, and the engine 20 can be automatically stopped when the vehicle stops.

  One example of the idling stop prohibition condition is that an accelerator pedal (not shown) is depressed, for example. Therefore, when the driver depresses the accelerator pedal when the vehicle speed is equal to or lower than the predetermined speed, the engine ECU 22 can restart the engine 20. Thereby, the operativity of a vehicle can be improved.

  In FIG. 1, an engine ECU 22 is connected to a sensor unit 24, and the sensor unit 24 includes a vehicle speed sensor (for example, a wheel speed sensor) that detects the speed of the vehicle, for example. The sensor unit 24 may further include an accelerator sensor (for example, a stroke sensor) that detects an operation of an accelerator pedal, for example. Further, the sensor unit 24 can further include, for example, a brake sensor (for example, a pressure sensor) that detects an operation of a brake pedal pedal. As described above, at least one sensor for detecting the physical quantity constituting the idling stop permission condition is provided. Further, the sensor unit 24 can output the detected physical quantity (for example, vehicle speed, accelerator pedal ON state, brake fluid pressure, etc.) to the engine ECU 22.

  The engine ECU 22 may input the operation state of the air conditioner from the control unit 10 of the air conditioner. In other words, the idling stop prohibition condition may be based on the operating state of the air conditioner, and the idling stop prohibition condition may include that the difference between the constant temperature and the room temperature (vehicle room temperature) is a predetermined value or more. Further, the engine ECU 22 considers range positions such as the P range, R range, N range, and D range detected by the shift position sensor (sensor unit 24), for example, and an idling stop permission condition and / or an idling stop prohibition. Conditions may be determined or set.

  The engine ECU 22 in FIG. 1 is connected to an ignition (IGN) switch 50 and can input the state of the ignition switch 50. When the state of the ignition switch 50 changes from the OFF state to the ON state, the engine ECU 22 can start the engine of the vehicle. Similarly, the control unit 10 or the control device 10 of the air conditioner can input the state of the ignition switch 50. The air conditioner can be activated when the state of the ignition switch 50 changes from the OFF state to the ON state.

  The display unit 40 of the air conditioner can display a color that changes based on the set temperature, blow-out temperature, etc. of the air conditioner as a display color, and can also input an occupant's operation on the air conditioner. That is, the display unit 40 may be a display / operation unit. Of course, the air conditioner may include a display unit 40 that simply displays the display color and an operation unit that inputs an occupant's operation.

  The display and operation unit 40 inputs an operation from the passenger, outputs operation information representing the operation to the control unit 10 of the air conditioner, and the control unit 10 of the air conditioner can set the set temperature of the air conditioner. it can. The control unit 10 of the air conditioner can set the blowing temperature according to the set temperature, and can control the blowing temperature so that the room air temperature matches the set temperature. The indoor air temperature is detected by an indoor air temperature sensor 34 provided in the vehicle interior.

  Preferably, the blowing temperature is set according to the set temperature and the room temperature. For example, the control unit 10 of the air conditioner determines the blowing temperature according to the difference between the room temperature and the set temperature. Of course, the blowing temperature may be set according to the set temperature, the room temperature, and the outdoor temperature, and the outdoor temperature is detected by the outdoor temperature sensor 32 provided outside the vehicle. In addition, the blowing temperature may be set according to the set temperature, the room temperature, the outdoor temperature, and the amount of solar radiation, and the air conditioner may further include a solar radiation sensor (not shown).

  The blowing temperature is set according to at least the set temperature, and in order to obtain the blowing temperature (target temperature), the control unit 10 of the air conditioner controls the temperature adjusting unit 12 configured by, for example, a compressor. The air conditioner further includes a blower 14 that controls an amount (air volume) of air (wind) having an actual temperature generated or changed by a cooling source, for example, generated by the temperature adjusting unit 12 from the outlet. Good. The blower 14 is a fan, for example. When the air conditioner includes the blower 14, the control unit 10 of the air conditioner can control the blowing temperature and the air volume so that the room air temperature automatically matches the set temperature. Of course, the air volume may be determined or fixed manually by operation information from the operation unit (display and operation unit 40).

  The temperature control unit 12 in FIG. 1 has, for example, a compressor that depends on the driving state of the engine 20. In other words, when the engine 20 stops, the temperature adjustment unit 12 does not function or generate an original cooling source.

  Specifically, the temperature adjustment unit 12 includes a cooling source generation unit that generates a low-temperature cooling source, and the cooling source generation unit generally includes a condenser and an evaporator in addition to a compressor, for example. The compressor rotates according to the rotation of the engine 20, compresses the refrigerant (air conditioner gas), and can send the compressed refrigerant to the condenser. The condenser cools the refrigerant compressed around with water or compressed around the condenser, and condenses or liquefies the refrigerant. The evaporator evaporates the refrigerant and takes away the heat of the air around the evaporator. In other words, the air around the evaporator is cooled, and the cooled air is sent to the room by the blower 14 through the outlet. The compressor compresses the refrigerant from the evaporator.

  Therefore, when the compressor is stopped, the circulation of the refrigerant is stopped, and the cooling capacity of the temperature adjusting unit 12 is reduced or stopped.

  The blower 14 sends out indoor or outdoor air to the periphery of the evaporator, so that the wind reaches the room from the blower 14 through the evaporator and the outlet. Here, the temperature control part 12 can further have a heater in the path | route between an evaporator and a blower outlet, for example. The heater is a heating source generation unit that generates a high-frequency heating source, and the heater takes in a high-temperature side cooling water warmed by the engine 20 (not a low-temperature side cooling water cooled by a radiator (not shown)). including. The heater core can apply heat to the air around the heater core. In other words, the air around the heater core is warmed, and the warmed air can be mixed with air from the blower 14 (which can include air cooled by an evaporator) through a mix door (not shown). That is, the temperature adjustment unit 12 can set or determine the blowout temperature (target temperature) by controlling the cooling source and the heating source.

  When the water pump that circulates the cooling water between the engine 20 and the radiator is stopped along with the stop of the engine 20, the heating capacity of the temperature control unit 12 is reduced or stopped.

  FIG. 2 shows a configuration example of the display / operation unit 40 of FIG. The air conditioner of FIG. 1 can include a first display unit 41 and a second display / operation unit 42 as the display unit 40, for example. Of course, the air conditioner may include only the first display unit 41 or may include only the second display / operation unit 42. Similarly, the air conditioner of FIG. 1 can include, as the operation unit 40, for example, first to seventh operation units 43, 44, 45, 46, 47, 48, and 49.

  In FIG. 2, the first display unit 41 is configured by a liquid crystal display, for example, and can display, for example, a set temperature with a two-digit number. The first display unit 41 in FIG. 2 indicates “88”, but does not indicate 88 degrees Celsius, for example, but includes a plurality of elements that constitute “88” and includes “00” to “99”. Any two-digit number can be displayed. However, the set temperature range has an upper limit and a lower limit, and the first display unit 41 does not show, for example, 00 degrees Celsius lower than the lower limit. Similarly, the first display unit 41 does not indicate, for example, 99 degrees Celsius higher than the upper limit.

  The second display / operation unit 42 in FIG. 2 includes, for example, a rotatable dial-type operation unit. For example, when the occupant rotates the display / operation unit 42 clockwise, the set temperature increases. On the other hand, the set temperature decreases when the occupant rotates the display and operation unit 42 counterclockwise.

  In FIG. 2, the first display unit 41 can display whether or not the automatic mode in which the blowout temperature and the air volume are controlled is effective so that the room temperature automatically matches the set temperature. The first display unit 41 in FIG. 2 shows “AUTO”, but when the automatic mode is invalid, the first display unit 41 can hide “AUTO”.

  The second display / operation unit 42 shown in FIG. 2 includes, for example, a memory-type push button type operation unit. For example, when the passenger pushes the display / operation unit 42, the automatic mode is enabled. When the passenger presses the display / operation unit 42 again, the automatic mode becomes invalid.

  In FIG. 2, the first display unit 41 can display the air volume using, for example, eight levels. The air volume in FIG. 2 shows, for example, seven bars, but the seven bars are not always shown. For example, when the air volume is at the maximum level (eighth level), for example, seven bars are displayed simultaneously. For example, when the air volume is the seventh level, for example, only six bars are displayed at the same time, and when the air volume is the lowest level (for example, the first level) or zero, the first display unit 41 displays, for example, seven bars. Can be hidden at the same time.

  The first operation unit 43 in FIG. 2 is, for example, a non-memory type push button type operation unit. For example, when the occupant continues to press the right side of the first operation unit 43, the air volume or level gradually increases. . On the other hand, as the occupant continues to push the left side of the first operation unit 43, the air volume or level gradually decreases. The occupant may manually control the air volume by operating the first operation unit 43.

  The second operation unit 44 in FIG. 2 is, for example, a memory-type push button type operation unit. For example, when the occupant presses the second operation unit 44 once, the power of the blower 14 is turned on, and the first The air volume determined by the operation unit 43 or the control unit of FIG. 1 is generated. When the passenger presses the second operation unit 44 once again, the power supply of the blower 14 is turned off, and the air volume becomes zero.

  In FIG. 2, the first display unit 41 can display the selected outlet or balloon mode. The air outlets in FIG. 2 show, for example, three air outlets. The three outlets are, for example, a first outlet (FACE outlet) from which wind is blown toward the upper body of the occupant, and a second outlet (FOOT outlet) from which the wind is blown toward the feet of the occupant. ) And a third outlet (DEF outlet) through which wind is blown toward the windshield.

  The third operation unit 45 in FIG. 2 is, for example, a memory-type push button type operation unit. For example, each time the occupant presses the third operation unit 45 once, the blowing mode is switched. For example, when the passenger presses the second third operation unit 45 once, only the first outlet (FACE outlet) is selected (first blowing mode). For example, when the occupant presses the second third operation unit 45 once again, only the first outlet (FACE outlet) and the second outlet (FOOT outlet) are selected (second Callout mode). Again, for example, when the occupant presses the second third operation unit 45 once again, only the second outlet (FOOT outlet) is selected (third outlet mode).

  In FIG. 2, the 1st display part 41 can display whether the temperature control part 12 is act | operating. The first display unit 41 indicates, for example, “A / C ON” and “A / C OFF”, but when the temperature adjustment unit 12 operates, the first display unit 41 in FIG. Only “/ C ON” can be shown, and “A / C OFF” can be hidden.

  The fourth operation unit 46 in FIG. 2 is, for example, a memory-type push button type operation unit. For example, when the passenger pushes the fourth operation unit 46, the temperature adjustment unit 12 is activated. When the passenger presses the fourth operation unit 46 again, the temperature adjustment unit 12 stops.

  In FIG. 2, the 1st display part 41 can display that the ionized wind is sent as another display, for example.

  The second display / operation unit 42 of FIG. 2 includes, for example, a liquid crystal display, and can display a display color, for example, as a background color or backlight of characters such as “PUSH AUTO”. Here, the display color is, for example, the blowing temperature set at least according to the set temperature, but may be the set temperature. Of course, when the second display / operation unit 42 does not include a liquid crystal display, for example, the backlight of the first display unit 41 or a two-digit number of a set temperature may be displayed as a display color. In other words, the display unit 40 in FIG. 1 may display only display colors that can be changed based on the temperature of the air conditioner such as the set temperature and the blow-out temperature.

  The fifth operation unit 47 in FIG. 2 is, for example, a memory-type push button type operation unit. For example, when the occupant pushes the fifth operation unit 47, the blower 14 sends indoor air. When the occupant presses the fifth operation unit 47 again, the blower 14 sends outdoor air. The blower 14 has, for example, an inside / outside air door (not shown), the inside / outside air door is moved according to operation information from the fifth operation unit 47, and indoor air or outdoor air is selected. Note that when indoor air is selected, the fifth operation unit 47 can light a light emitting unit, which is an LED, for example.

  Each of the sixth operation unit 48 and the seventh operation unit 49 in FIG. 2 is, for example, a memory-type push button type operation unit. For example, when the occupant pushes the sixth operation unit 48, the rear glass and the door mirror The glass defogger is activated. For example, when the occupant pushes the seventh operation unit 49, the windshield defogger is activated. The control unit 10 in FIG. 1 may control these defoggers similarly to the blower 14. Of course, not the control unit 10 of the air conditioner but another control unit (not shown) may control these defoggers. In other words, the air conditioner or the display / operation unit 40 includes, for example, a sixth operation unit. 48 and the seventh operation unit 49 may not be provided.

FIG. 3 is an explanatory diagram of display colors based on the blowing temperature displayed on the display unit 42 of FIG.
In FIG. 3, for example, seven display colors are shown. For example, the display color of the leftmost display unit 42 corresponds to, for example, the highest temperature of the blowing temperature, and the display color of the leftmost display unit 42 is a warm color system. For example, the color is red. For example, the display color of the rightmost display unit 42 corresponds to, for example, the lowest blowing temperature, and the display color of the rightmost display unit 42 is, for example, blue, which is a cool color. For example, the display color of the middle display unit 42 corresponds to, for example, the center temperature of the blowing temperature, and the display color of the middle display unit 42 is, for example, white, which is a neutral color. For example, the higher the blowing temperature, the higher the lightness and / or saturation of red, for example. Similarly, for example, the lightness and / or saturation of blue is set higher as the blowing temperature becomes lower.

  Thus, for example, the occupant can understand the control status (cooling capacity and / or heating capacity) of the control unit 10 by changing the display color displayed on the display unit 42 based on the blowing temperature. The display color may change based on the set temperature or may change based on the room temperature. Of course, the display color may change based on the air volume as well as the temperature of the air conditioner.

  FIG. 4 is an explanatory diagram of display colors based on the vehicle state displayed on the display unit 42 of FIG. In FIG. 4, for example, three vehicle states are shown, for example, the leftmost vehicle state means that the speed of the vehicle is greater than zero. The rightmost vehicle condition also means that the vehicle speed is greater than zero. The middle vehicle state means that the vehicle speed is zero. Here, the vehicle state is specifically the driving state of the engine 12, and one example of the idling stop permission condition is that, for example, the vehicle speed is a predetermined speed (for example, 0 [km / h]) or less. is there. One example of the idling stop prohibition condition is that the idling stop permission condition is not satisfied or the accelerator pedal is depressed.

  When the vehicle stops, that is, at time t1, an idling stop permission condition is satisfied. Further, when the vehicle travels again, that is, at time t2, the idling stop permission condition is not satisfied. Alternatively, the idling stop prohibition condition is satisfied when the accelerator pedal is depressed, that is, at time t2.

  Until the idling stop permission condition is satisfied, that is, until time t1, the control unit 10 of the air conditioner displays the color that can be changed based on the temperature of the air conditioner as the display color. 42 is controlled. When the idling stop permission condition is satisfied, that is, at time t1, the control unit 10 or the control device 10 of the air conditioner controls the display unit 42 so that the display unit 42 displays a fixed color as the display color. be able to. The fixed color is, for example, green, which is a green color that makes it easy for the passenger to imagine an environmentally friendly color. Here, the fixed color is preferably not included in the color that can change based on the temperature of the air conditioner.

  At the time when a predetermined time (first predetermined time) has elapsed after the idling stop permission condition is satisfied, that is, at time t1 ′, the control unit 10 or the control device 10 of the air conditioner displays the fixed color in the display unit 42. The display unit 42 may be controlled to display the display color. Immediately after the vehicle idling stop permission condition is satisfied, the temperature of the air blown out from the blowout port of the air conditioner is close to the blowout temperature. In other words, even if the compressor is stopped, for example, the air blown from the air outlet of the air conditioner does not immediately warm. After considering such a time lag, the display unit 42 can display a fixed color at time t1 ′. The predetermined time (first predetermined time) may be a time (for example, a time of about 2 seconds to 3 seconds) when the wind having the blowing temperature (for example, the last cold wind) is blown out from the blowing port of the air conditioner. .

  As described above, when the idling stop permission condition for the vehicle is satisfied, for example, at time t1, t1 ′, the control unit 10 or the control device 10 of the air conditioner displays the fixed color as the display color, for example, on the display unit 42. Thus, the display unit 42 is controlled.

  For example, from the time t1 or the time t1 ′ until the idling stop prohibition condition is satisfied, that is, until the time t2, the control unit 10 of the air conditioner displays the fixed color as the display color. The display unit 42 is controlled. At the time when the idling stop prohibition condition is satisfied, that is, at time t2, the control unit 10 or the control device 10 of the air conditioner controls the display unit 42 so that the display unit 42 does not display the fixed color as the display color. be able to. That is, the display unit 42 again displays a color that can change based on the temperature of the air conditioner as a display color.

  When the predetermined time (second predetermined time) has elapsed after the idling stop prohibition condition is satisfied, that is, at time t2 ′, the control unit 10 or the control device 10 of the air conditioner displays the fixed color in the display unit 42. You may control the display part 42 so that it may not display as a display color. Immediately after the vehicle idling stop prohibition condition is satisfied, the temperature of the air blown from the air outlet of the air conditioner does not match the blowout temperature. In other words, even if the compressor is restarted, for example, the air blown from the air outlet of the air conditioner does not immediately cool. After considering such a time lag, at time t2 ′, the display unit 42 can display a color that can change based on the temperature of the air conditioner. The predetermined time (second predetermined time) may be a time (for example, a time of about 2 seconds to 3 seconds) at which the wind having the blowing temperature (for example, the first cold wind) starts to be blown out from the blowing port of the air conditioner. .

  FIG. 5 is a flowchart showing an operation example of the air conditioner of FIG. The control unit 10 or the control device 10 of the air conditioner determines whether or not the ignition switch 50 is in the ON state (step S1 in FIG. 5). When the passenger turns on the ignition switch 50, the engine ECU 22 can start the engine 20. Further, when the ignition switch 50 is turned on, electric power from a vehicle battery (not shown) is supplied to the air conditioner or control device 10, and the air conditioner or control device 10 can be activated.

  When the air conditioner or the control device 10 is activated, the control unit 10 or the control device 10 of the air conditioner controls the display unit 42 of the display and operation unit 40, whereby the display unit 42 in FIG. Based on this, a plurality of colors that change within a predetermined period can be displayed as display colors (step S2 in FIG. 5). When the ignition switch 50 that can start the engine 20 is turned on, the display unit 42 can display a plurality of colors within a predetermined period. It is possible to recognize that it has been input. Moreover, since the display part 42 displays a several color when an air conditioner starts, the passenger | crew can recognize whether the display part 42 is out of order. In other words, the occupant can recognize whether the idling stop permission condition is satisfied after recognizing that the display unit 42 has not failed.

  Here, it is preferable that the fixed color (for example, green) displayed by the display unit 42 when the vehicle idling stop permission condition is satisfied is included in a plurality of colors that can be changed based on the activation mode. In addition, the display unit 42 that displays a plurality of colors that change within a predetermined period based on the activation mode can give a sense of hospitality to the occupant who starts the engine 20.

  FIG. 6 is an explanatory diagram of display colors based on other vehicle states (startup modes) displayed on the display unit 42 of FIG. In FIG. 6, another vehicle state means that the engine 20 has started. In FIG. 6, for example, seven display colors are shown. For example, the middle display color is, for example, a fixed color (for example, green) displayed by the display unit 42 when the vehicle idling stop permission condition is satisfied. When the air conditioner or the control device 10 is activated, the occupant can check whether the display unit 42 can display, for example, green.

  For example, the display color next to the right side of the middle display color (third display color of the left display unit 42) corresponds to, for example, the lowest temperature of the blowout temperature, and the display color of the rightmost display unit 42 is For example, it is blue which is a cool color. Thereby, when the air conditioner or the control device 10 is activated, the occupant can check whether the display unit 42 can display, for example, blue (color that can be displayed by the display unit 42 when the vehicle is traveling). it can.

  For example, the display color of the leftmost display unit 42 corresponds to, for example, the highest temperature of the blowout temperature, and the display color of the leftmost display unit 42 is, for example, red, which is a warm color. Thus, when the air conditioner or the control device 10 is activated, the occupant can check whether the display unit 42 can display, for example, red (color that the display unit 42 can display when the vehicle is traveling). it can.

  The plurality of colors (display colors of the display unit 42) that change within a predetermined period based on the activation mode include not only the above-described green, blue, and red, but also, for example, orange, yellow, light blue, and purple. The two display colors are switched sequentially. Specifically, the display unit 42 first displays, for example, red, then changes from red to orange, and then displays yellow. Thereafter, the display unit 42 displays, for example, green, then changes from green to blue, and then displays red. The display unit 42 finally displays, for example, purple. The display unit 42 may display seven display colors from red to purple again.

  Thereafter, the control unit 10 of the air conditioner determines whether or not the state of the fourth operation unit 46 in FIG. 2 is the ON state (step S3 in FIG. 5). When the operation unit 46 (A / C) is not in the ON state, the control unit 10 of the air conditioner turns off the display color of the display unit 42 (for example, the background color or the backlight such as “PUSH AUTO” characters). On the other hand, when the operation unit 46 (A / C) is in the ON state, the control unit 10 of the air conditioner can operate the temperature adjustment unit 12 and, for example, set temperature, indoor The blowing temperature (target temperature) is set according to the air temperature, the outdoor air temperature, and the amount of solar radiation.

  In step S4 of FIG. 5, the display unit 42 displays, for example, a color that can be changed based on the blowing temperature (target temperature) as a display color (see FIG. 3). When the display unit 42 displays, as the display color, a color that can be changed based on the blowing temperature, the control unit 10 or the control device 10 of the air conditioner determines whether the idling stop permission condition is satisfied (step in FIG. 5). S5). Specifically, the engine ECU 22 in FIG. 2 stops the engine 20 when the idling stop permission condition is satisfied, and outputs an idling stop permission signal indicating that the idling stop permission condition is satisfied, to the control unit 10 or the control of the air conditioner. Output to the device 10. The control unit 10 or the control device 10 of the air conditioner can determine whether the idling stop permission condition is satisfied based on the idling stop permission signal (step S5 in FIG. 5).

  When the idling stop permission condition is satisfied, the control unit 10 of the air conditioner or the display unit 42 controlled by the control device 10 is a fixed color (for example, a greenish color that makes it easy for an occupant to imagine an environmentally friendly color, for example) Green) is displayed (step S6 in FIG. 5).

  Further, when the idling stop permission condition is satisfied, the control unit 10 or the control device 10 of the air conditioner determines whether the idling stop prohibition condition is satisfied (step S7 in FIG. 5). Specifically, the engine ECU 22 in FIG. 2 restarts the engine 20 when the idling stop prohibiting condition is satisfied, and outputs an idling stop prohibiting signal indicating that the idling stop prohibiting condition is satisfied, Output to the control device 10. Here, the engine ECU 22 in FIG. 2 may stop outputting the idling stop permission signal. The control unit 10 or the control device 10 of the air conditioner can determine whether or not the idling stop prohibition condition is satisfied based on, for example, the idling stop prohibiting signal (step S7 in FIG. 5).

  Thereafter, the control unit 10 of the air conditioner confirms that the state of the fourth operation unit 46 (A / C) in FIG. 2 is ON in step S8 of FIG. Can operate the temperature adjusting unit 12 and the display unit 42 displays, as a display color, a color that can be changed based on, for example, the blowing temperature (target temperature) in step S9 of FIG. 5 (see FIG. 3). .

  When the ignition switch 50 is turned off, the engine ECU 22 in FIG. 2 completely stops the engine 20, and the display unit 42 to which no power is supplied stops displaying the display color (see step S10 in FIG. 5). ).

  The present invention is not limited to the above-described exemplary embodiments, and those skilled in the art will be able to easily modify the above-described exemplary embodiments to the extent included in the claims. .

  DESCRIPTION OF SYMBOLS 10 ... Control part or control apparatus, 12 ... Temperature control part (compressor), 14 ... Blower (fan), 20 ... Engine, 22 ... Engine ECU, 24 ... Sensor part ( Vehicle speed sensor, accelerator sensor, brake sensor, shift position sensor), 32 ... indoor air temperature sensor, 34 ... outdoor air temperature sensor, 40 ... display unit or display and operation unit, 42 ... display unit, 50 ... Ignition switch.

Claims (3)

A control device for controlling a display unit of the air conditioner that displays a changeable color as a display color based on a set temperature or a blowing temperature of an air conditioner provided in a vehicle,
When the vehicle stops and the idling stop permission condition is satisfied, the display unit is controlled so that the display unit displays a fixed color as the display color ,
When the vehicle idling stop prohibition condition is satisfied, the display unit displays the color that can be changed based on the blowing temperature as the display color,
After idling stop prohibition condition of the vehicle is satisfied, when a predetermined time has elapsed, the display unit, control unit and displaying the balloon the color can be changed based on the temperature in said display color . The control device according to claim 1 , wherein the predetermined time is a time when the wind having the blowing temperature starts to be blown out from the blowing port of the air conditioner. When the state of the switch capable of starting the vehicle engine changes from the OFF state to the ON state, the display unit displays a plurality of colors that change within a predetermined period based on the start mode as the display colors. control device according to claim 1 or 2, characterized in that for controlling the parts.

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