Vehicle interior temperature transmitter and communication terminal

Abstract

To provide a display control device of a cabin temperature by which a cabin temperature close to user's feeling can be displayed on a communication terminal outside the cabin.SOLUTION: A display control device 1 of a cabin temperature detects and displays a temperature in a cabin R on a communication terminal 3 which is arranged outside the cabin R, and includes an inside air temperature sensor 11, an outside air temperature sensor 12, a water temperature sensor 13, a solar radiation sensor 14, and a controller 15. The controller 15 determines an unattended state of a vehicle 2 on the basis of a temperature Tw of engine cooling water detected by the water temperature sensor 13, corrects an inside air temperature Ti detected by the inside air temperature sensor 11 according to the unattended state which is determined, the outside air temperature To detected by the outside air temperature sensor 12, and an amount of solar radiation As detected by the solar radiation sensor 14, and displays the corrected inside air temperature on the communication terminal 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle interior temperature send Device and communication terminals Regarding. [Background technology]

[0002] Conventionally, there is known a device that uses a connected function installed in a vehicle such as an automobile to control a communication terminal such as a smartphone installed outside the vehicle to display the temperature inside the vehicle. A user can check the temperature inside the vehicle displayed on the communication terminal and remotely operate, for example, an air conditioner installed in the vehicle from outside the vehicle in advance. In such a display control device for the temperature inside the vehicle, an inside air temperature sensor installed in the vehicle may detect the inside air temperature inside the vehicle and display the detected inside air temperature directly on the communication terminal. In this case, the temperature distribution inside the vehicle caused by conditions such as the installation location of the inside air temperature sensor in the vehicle and sunlight may cause the temperature inside the vehicle displayed on the communication terminal to deviate from the temperature actually felt by the user when getting into the vehicle (hereinafter referred to as the "user's perceived temperature").

[0003] Conventional display control devices that address this discrepancy include one that corrects the temperature inside the vehicle cabin displayed on a communications terminal to be higher than the detected value of an interior air temperature sensor, and increases the amount of correction in accordance with an increase in the amount of solar radiation inside the vehicle cabin, thereby reducing the discrepancy between the temperature displayed by the communications terminal and the temperature felt by the user (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-76507 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the conventional display control device as described above, the amount of solar radiation in the vehicle cabin may vary significantly in a relatively short period of time due to changes in weather conditions at the vehicle's current location. In this case, the temperature distribution in the vehicle cabin changes gradually over time compared to the amount of solar radiation. For this reason, it is difficult to bring the display temperature of the communication terminal closer to the user's perceived temperature simply by adjusting the amount of correction for the temperature in the vehicle cabin according to the amount of solar radiation, and there is room for improvement.

[0006] The present invention has been made in consideration of the above points, and provides a vehicle interior temperature display device that can display the vehicle interior temperature close to the user's actual feeling on a communication terminal outside the vehicle interior. send Device and communication terminals The purpose is to provide. [Means for solving the problem]

[0007] In order to achieve the above object, one aspect of the present invention provides a vehicle interior temperature transmitting device that transmits the vehicle interior temperature to a communication terminal capable of displaying the vehicle interior temperature. The vehicle interior temperature transmitting device includes a drive device that drives a vehicle. The drive device acquired when the drive device is stopped Cooling water temperature and the temperature of the cooling water of the drive unit acquired when a request to display the temperature in the vehicle interior is output from the communication terminal, A state in which the vehicle is left unattended is determined, and based on the determined state in which the vehicle is left unattended, The above The inside air temperature in the vehicle compartment is corrected, and the corrected inside air temperature is transmitted to the communication terminal. Effect of the Invention

[0008] The present invention relates to the vehicle interior temperature send According to the device, the interior air temperature is corrected with high accuracy to match the temperature distribution inside the vehicle cabin, so that the interior temperature close to what the user would experience can be displayed on a communication terminal outside the vehicle cabin. [Brief description of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of a display control device for vehicle interior temperature according to an embodiment of the present invention; [Diagram 2]1 is a side cross-sectional view conceptually showing a main part of a vehicle to which a display control device according to the embodiment is applied. [Diagram 3] 5 is a flowchart showing an example of a display control of the vehicle interior temperature in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a block diagram showing the configuration of a display control device for vehicle interior temperature according to one embodiment of the present invention. Fig. 2 is a side cross-sectional view showing an outline of a vehicle to which the display control device according to the embodiment is applied. In Fig. 2, the arrow Fr direction indicates the front in the vehicle longitudinal direction, and the arrow U direction indicates the upward direction in the vehicle vertical direction.

[0011] 1 and 2, a vehicle interior temperature display control device 1 according to this embodiment detects the temperature inside the vehicle interior R of a vehicle 2 such as an automobile, and controls the display of the detected temperature on a communication terminal 3 outside the vehicle interior R. The display control device 1 is configured to include, for example, an inside air temperature sensor 11 as inside air temperature detection means, an outside air temperature sensor 12 as outside air temperature detection means, a water temperature sensor 13 as water temperature detection means, a solar radiation sensor 14 as solar radiation detection means, and a controller 15 as control means. In this embodiment, the controller 15 ( The control means corresponds to the "transmitting device for vehicle interior temperature" of the present invention.

[0012] The inside air temperature sensor 11 detects the temperature of air (inside air temperature) Ti inside the passenger compartment R, and outputs a signal indicating the detected inside air temperature Ti to the controller 15 (FIG. 1). The inside air temperature sensor 11 can also serve as an existing temperature sensor used to detect the inside air temperature when performing automatic control or the like in an air conditioner (not shown) mounted on the vehicle 2. Specifically, the inside air temperature sensor 11 is installed on the back side of an air conditioner operation panel 22 (FIG. 2). The air conditioner operation panel 22 is attached to the bottom of an instrument panel 21 located at the front of the passenger compartment R. The air conditioner operation panel 22 is provided with operation switches for the air conditioner and has a slit for the inside air temperature sensor 11, and the inside air temperature sensor 11 is exposed to the air inside the passenger compartment R through the slit.

[0013] The installation location of the inside air temperature sensor 11 is less susceptible to temperature rise due to solar radiation compared to the space above the vehicle interior R. Therefore, when a temperature distribution occurs in the vehicle interior R due to conditions such as solar radiation, the temperature at the installation location of the inside air temperature sensor 11 becomes relatively low. The temperature that the user actually feels when getting into the vehicle interior R (the user's sensible temperature) is usually the temperature of a space located above the installation location of the inside air temperature sensor 11. Therefore, the inside air temperature Ti indicated by the detection value of the inside air temperature sensor 11 is lower than the user's sensible temperature. In other words, when the inside air temperature Ti indicated by the detection value of the inside air temperature sensor 11 is displayed on the communication terminal 3 outside the vehicle interior R, the displayed temperature of the communication terminal 3 may deviate from the user's sensible temperature. In order to suppress such a deviation from the user's sensible temperature, in this embodiment, the controller 15 corrects the inside air temperature Ti detected by the inside air temperature sensor 11.

[0014] The outside air temperature sensor 12 detects the temperature of the air outside the vehicle compartment R (outside air temperature) To, and outputs a signal indicating the detected outside air temperature To to the controller 15 (Fig. 1). The outside air temperature sensor 12 can also serve as an existing temperature sensor used to detect the outside air temperature when performing automatic control or the like in the air conditioning system of the vehicle 2. Specifically, the outside air temperature sensor 12 is disposed on the rear side of the front bumper of the vehicle 2 (Fig. 2). Note that an existing intake air temperature sensor that detects the temperature of the air (intake air) drawn into the engine 23 (drive device) that drives the vehicle 2 may also be used as the outside air temperature sensor 12 of the display control device 1.

[0015] The water temperature sensor 13 detects the temperature Tw of the coolant for the engine 23, and outputs a signal indicating the detected coolant temperature Tw to the controller 15 (FIG. 1). The water temperature sensor 13 can also serve as an existing water temperature sensor used to detect the temperature of the coolant when controlling the operation of the engine 23. Specifically, the water temperature sensor 13 is disposed on a path of the coolant circulating between a water jacket provided around the cylinder of the engine 23 and a radiator (not shown) (FIG. 2). The engine 23 is mounted in an engine room E at the front of the vehicle body. The dashed line in FIG. 2 indicates the position of the dash panel that separates the engine room E from the passenger compartment R.

[0016] The solar radiation sensor 14 detects the amount of solar radiation As in the vehicle interior R and outputs a signal indicating the detected amount of solar radiation As to the controller 15 (FIG. 1). The solar radiation sensor 14 can also serve as an existing solar radiation sensor used to detect the amount of solar radiation entering the vehicle interior R in automatic control of an air conditioner, etc. Specifically, the solar radiation sensor 14 is provided on the upper surface of the instrument panel 21 at a position where it can receive sunlight S entering the vehicle interior R through a window glass 24 such as a windshield (FIG. 2).

[0017] The solar radiation As detected by the solar radiation sensor 14 represents the intensity of the energy of the sunlight S irradiated per unit area per unit time, and is expressed in units of [W / m 2]. This amount of solar radiation As can vary significantly in a relatively short period of time due to changes in weather conditions at the current location of the vehicle 2. The effect of the variation in the amount of solar radiation As on the air temperature inside the vehicle compartment R differs between the air in the upper space near the window glass 24 and roof 25 and the air in the lower space. For this reason, the temperature distribution of the air throughout the vehicle compartment R changes more slowly over time than the variation in the amount of solar radiation As.

[0018] Such a gradual change over time in the temperature distribution inside the passenger compartment R is similar to the change over time in the coolant temperature Tw detected by the water temperature sensor 13. That is, since the specific heat of the engine 23 coolant is greater than the specific heat of air, the change over time in the coolant temperature when the engine 23 is stopped and the vehicle 2 is left unattended is more gradual than the change over time in the air temperature in the engine compartment E. Therefore, in this embodiment, the controller 15 determines whether the vehicle 2 is left unattended using the coolant temperature Tw detected by the water temperature sensor 13 as one parameter.

[0019] The controller 15 determines whether the vehicle 2 is left unattended based on the outside air temperature To detected by the outside air temperature sensor 12 and the coolant temperature Tw detected by the water temperature sensor 13, corrects the inside air temperature Ti detected by the inside air temperature sensor 11 according to the determined left-standing state and the amount of solar radiation As detected by the solar radiation sensor 14, and controls the communication terminal 3 to display the corrected inside air temperature (Ti+Tc) (FIG. 1). The controller 15 is provided inside an instrument panel 21 of the vehicle 2 (FIG. 2). The controller 15 is composed of a well-known microcomputer having a processor such as a CPU, a nonvolatile memory such as a flash memory, a volatile memory such as a RAM, an input / output interface with external devices, and a bus that connects these to each other so that they can communicate with each other.

[0020] Specifically, the controller 15 has, as its functional blocks, a detection value acquisition unit 15A, an outside air temperature level determination unit 15B, an abandonment level determination unit 15C, a weather information acquisition unit 15D, a solar radiation level determination unit 15E, a memory unit 15F, a correction unit 15G, and a display unit 15H (Figure 1).

[0021] The detection value acquisition unit 15A is provided with each signal output from the inside air temperature sensor 11, the outside air temperature sensor 12, the water temperature sensor 13, and the solar radiation sensor 14 to the controller 15. Specifically, the detection value acquisition unit 15A acquires the detection value of the water temperature sensor 13 when the engine 23 is stopped. In addition, the detection value acquisition unit 15A acquires the detection values ​​of the inside air temperature sensor 11, the outside air temperature sensor 12, the water temperature sensor 13, and the solar radiation sensor 14 when a display request for the temperature inside the vehicle compartment R is output from the communication terminal 3. The detection value of the inside air temperature sensor 11 (inside air temperature Ti) acquired by the detection value acquisition unit 15A is transmitted to the correction unit 15G. The detection value of the outside air temperature sensor 12 (outside air temperature To) acquired by the detection value acquisition unit 15A is transmitted to the outside air temperature level determination unit 15B. The detection value (coolant temperature Tw) of the water temperature sensor 13 acquired by the detection value acquisition unit 15A is transmitted to the neglect level determination unit 15C. The detection value (amount of solar radiation As) of the solar radiation sensor 14 acquired by the detection value acquisition unit 15A is transmitted to the solar radiation level determination unit 15E.

[0022] In the outdoor air temperature level determination unit 15B, a plurality of outdoor air temperature levels are determined by dividing the outdoor air temperature range into levels. In this embodiment, the outdoor air temperature range is divided into three levels, for example, and three outdoor air temperature levels consisting of "low", "medium" and "high" are determined in advance in the outdoor air temperature level determination unit 15B. The outdoor air temperature level determination unit 15B determines which of the three outdoor air temperature levels the detection value (outdoor air temperature To) of the outdoor air temperature sensor 12 acquired by the detection value acquisition unit 15A corresponds to. A specific method of determining the outdoor air temperature level will be described later. The outdoor air temperature level determined by the outdoor air temperature level determination unit 15B is transmitted to the neglect level determination unit 15C and the correction unit 15G, respectively.

[0023] The neglected state of the vehicle 2 is divided into a plurality of neglected levels in the neglected state determination unit 15C. In this embodiment, the neglected state of the vehicle 2 is divided into two levels, for example, and two neglected levels consisting of "low" and "high" are predefined in the neglected state determination unit 15C. The neglected state determination unit 15C determines the neglected state of the vehicle 2 based on the detection value (coolant temperature Tw) of the water temperature sensor 13 acquired by the detection value acquisition unit 15A. In the neglected state determination unit 15C according to this embodiment, the neglected state of the vehicle 2 is determined taking into consideration the outside air temperature level determined by the outside air temperature level determination unit 15B in addition to the coolant temperature Tw detected by the water temperature sensor 13. Then, the neglected state determination unit 15C determines which of the two neglected levels the determined neglected state of the vehicle 2 corresponds to. A specific method of determining the neglected level will be described later. The neglected level determined by the neglected state determination unit 15C is transmitted to the correction unit 15G.

[0024] The weather information acquisition unit 15D acquires weather information corresponding to the current position of the vehicle 2. The weather information acquisition unit 15D has a function of acquiring current position information of the vehicle 2 using, for example, a global positioning system (GPS) or the like, and a function of acquiring weather information corresponding to the current position information by connecting to a communication network such as the Internet. The weather information acquired by the weather information acquisition unit 15D is transmitted to the solar radiation level determination unit 15E.

[0025] The solar radiation level determination unit 15E has a plurality of solar radiation levels that are determined by dividing the range of solar radiation in the vehicle interior R into levels. In this embodiment, the range of solar radiation in the vehicle interior R is divided into, for example, five levels, and five solar radiation levels consisting of "Lv.0", "Lv.1", "Lv.2", "Lv.3", and "Lv.4" are previously determined in the solar radiation level determination unit 15E. The solar radiation level determination unit 15E determines which of the five solar radiation levels the detection value (solar radiation As) of the solar radiation sensor 14 acquired by the detection value acquisition unit 15A corresponds to. Then, the solar radiation level determination unit 15E corrects the determined solar radiation level according to the weather information acquired by the weather information acquisition unit 15D. A specific method of determining and correcting the solar radiation level will be described later. The solar radiation level determined and corrected by the solar radiation level determination unit 15E is transmitted to the correction unit 15G.

[0026] The memory unit 15F stores a map that associates each combination of a plurality of outside air temperature levels, a plurality of left-alone levels, and a plurality of solar radiation levels with a correction value Tc of the detection value (inside air temperature Ti) of the inside air temperature sensor 11. Table 1 below shows an example of the map.

[0027] [Table 1]

[0028] In one example of the map shown in Table 1, the correction value Tc of the inside air temperature is predefined in correspondence with each combination of three outside air temperature levels ("low", "medium", and "high"), two neglected levels ("low" and "high"), and five solar radiation levels ("Lv.0", "Lv.1", "Lv.2", "Lv.3", and "Lv.4"). Each correction value Tc represents an absolute value of temperature to be added to the inside air temperature Ti detected by the inside air temperature sensor 11. For example, when the outside air temperature level is "low", the neglected level is "low", and the solar radiation level is "Lv.0", the correction value Tc is "0". Also, for example, when the outside air temperature level is "high", the neglected level is "high", and the solar radiation level is "Lv.4", the correction value Tc is "20".

[0029] Correction unit 15G refers to a map stored in memory unit 15F and determines a correction value Tc of the inside air temperature corresponding to a combination of the outside air temperature level determined by outside air temperature level determination unit 15B, the neglected level determined by neglected level determination unit 15C, and the solar radiation level determined by solar radiation level determination unit 15E. Correction unit 15G then executes a process of correcting the inside air temperature Ti indicated by the detection value of inside air temperature sensor 11 acquired by detection value acquisition unit 15A using the determined correction value Tc. The inside air temperature (Ti+Tc) corrected by correction unit 15G is transmitted to display unit 15H.

[0030] The display unit 15H generates a control signal for displaying the corrected inside air temperature (Ti+Tc) transmitted from the correction unit 15G on the communication terminal 3 outside the vehicle compartment R. Then, the display unit 15H transmits the generated control signal to the communication terminal by using a communication function such as a connected function mounted on the vehicle 2.

[0031] The communication terminal 3 is, for example, an electronic device owned by a user, such as a smartphone, a tablet terminal, a mobile phone, or a remote controller for remotely operating the vehicle 2. The communication terminal 3 is capable of transmitting and receiving various information to and from the vehicle 2 via wireless communication. Application software compatible with the vehicle 2 is installed in the communication terminal 3. The user can display various information related to the vehicle 2, including the temperature inside the passenger compartment R, on the screen of the communication terminal 3 by activating the application software and operating the communication terminal 3.

[0032] Next, the operation of the display control device 1 according to this embodiment will be described in detail. FIG. 3 is a flowchart showing an example of the display control of the vehicle interior temperature in this embodiment. In the display control device 1 according to this embodiment, first, in step S10 of Fig. 3, the controller 15 determines whether or not the engine 23 of the vehicle 2 has stopped. If it is determined that the engine 23 has stopped (YES), in the following step S20, the detection value acquisition unit 15A acquires the detection value (coolant temperature Tw) of the water temperature sensor 13 when the engine 23 is stopped, and the detection value is held in the detection value acquisition unit 15A.

[0033] In the next step S30, the controller 15 determines whether or not a display request for the temperature inside the vehicle compartment R has been received from the communication terminal 3. This display request is generated when a user outside the vehicle compartment R of the vehicle 2 wants to know the temperature inside the vehicle compartment R by starting up application software on the communication terminal 3 carried by the user and performing a predetermined operation, and the generated display request is transmitted from the communication terminal 3 to the controller 15 of the vehicle 2.

[0034] When the controller 15 determines that a display request has been received from the communication terminal 3 (YES in step S30), in the subsequent step S40, the detection value acquisition unit 15A acquires the detection values ​​of the inside air temperature sensor 11, the outside air temperature sensor 12, the water temperature sensor 13, and the solar radiation sensor 14, and the weather information acquisition unit 15D acquires weather information corresponding to the current position of the vehicle 2.

[0035] In the next step S50, the outdoor air temperature level determination unit 15B determines which of the three outdoor air temperature levels ("low", "medium", or "high") the detection value (outdoor air temperature To) of the outdoor air temperature sensor 12 acquired in the above step S40 corresponds to. This outdoor air temperature level determination is performed, for example, according to the determination criteria shown in Table 2 below.

[0036] [Table 2]

[0037] In one example of the judgment criteria shown in Table 2, when the outside air temperature To detected by the outside air temperature sensor 12 is less than 10° C., it is judged that the outside air temperature level is “low”. When the outside air temperature To is 10° C. or more and less than 30° C., it is judged that the outside air temperature level is “medium”. When the outside air temperature To is 30° C. or more, it is judged that the outside air temperature level is “high”. The outside air temperature level judged according to such judgment criteria is transmitted from the outside air temperature level judgement unit 15B to the neglect level judgement unit 15C and the correction unit 15G, respectively.

[0038] In the next step S60, the abandoned state of the vehicle 2 is determined in the abandoned state level determination unit 15C based on the outside air temperature level determined in the above step S50 and the detection values ​​of the water temperature sensor 13 obtained in the above-mentioned steps S20 and S40, respectively, and a determination is made as to which of the two abandoned state levels ("low" and "high") the determined abandoned state corresponds to.

[0039] Specifically, in determining whether the vehicle 2 is left unattended, first, a temperature difference ΔTw between the detection value of the water temperature sensor 13 acquired in step S20 (the temperature Tw of the coolant when the engine 23 is stopped) and the detection value of the water temperature sensor 13 acquired in step S40 (the temperature Tw of the coolant when the display request is received) is calculated. The longer the time the vehicle 2 is left unattended after the engine 23 is stopped, the greater the temperature difference ΔTw of the coolant that occurs during a predetermined time of being left unattended. In addition, the lower the outside air temperature of the vehicle 2, the greater the temperature difference ΔTw of the coolant that occurs during a predetermined time of being left unattended. In consideration of such characteristics of the temperature difference ΔTw of the coolant, the left-alone level determination unit 15C of this embodiment determines the left-alone level of the vehicle 2 according to, for example, the determination criteria shown in Table 3 below.

[0040] [Table 3]

[0041] In one example of the judgment criteria shown in Table 3, the threshold value for the coolant temperature difference ΔTw used in judging the abandoned level of the vehicle 2 ("low" and "high") is set to a different value for each of the three outside air temperature levels ("low", "medium", and "high"). Specifically, when the outside air temperature level is "low", the threshold value for the coolant temperature difference ΔTw is set to "20°C". In other words, an abandoned state of the vehicle 2 in which the outside air temperature level is "low" and the coolant temperature difference ΔTw is 20°C or more is judged to correspond to the abandoned level of "high". On the other hand, an abandoned state of the vehicle 2 in which the outside air temperature level is "low" and the coolant temperature difference ΔTw is less than 20°C is judged to correspond to the abandoned level of "low".

[0042] Furthermore, when the outside air temperature level is "medium", the threshold value for the coolant temperature difference ΔTw is set to "10°C". In other words, when the outside air temperature level is "medium" and the coolant temperature difference ΔTw is 10°C or more, the vehicle 2 is determined to be left unattended at a "high" level. On the other hand, when the outside air temperature level is "medium" and the coolant temperature difference ΔTw is less than 10°C, the vehicle 2 is determined to be left unattended at a "low" level.

[0043] Furthermore, when the outside air temperature level is "high", the threshold value of the coolant temperature difference ΔTw is set to "5°C". In other words, an abandoned state of the vehicle 2 in which the outside air temperature level is "high" and the coolant temperature difference ΔTw is 5°C or more is determined to correspond to the "high" abandoned state level. On the other hand, an abandoned state of the vehicle 2 in which the outside air temperature level is "high" and the coolant temperature difference ΔTw is less than 5°C is determined to correspond to the "low" abandoned state level. The abandoned level of the vehicle 2 determined according to the above-mentioned determination criteria is transmitted from the abandoned level determination unit 15C to the correction unit 15G.

[0044] In the next step S70, the solar radiation level determination unit 15E determines which of the five outside air temperature levels ("Lv.0", "Lv.1", "Lv.2", "Lv.3", and "Lv.4") the detection value (solar radiation As) of the solar radiation sensor 14 acquired in the above-mentioned step S40 corresponds to. This solar radiation level determination is performed, for example, according to the determination criteria shown in Table 4 below.

[0045] [Table 4]

[0046] In one example of the criteria shown in Table 4, the amount of solar radiation As detected by the solar radiation sensor 14 is 50 W / m 2 If the solar radiation As is less than 50 W / m, it is determined that the solar radiation level is "Lv.0". 2 or more, and 300W / m 2 If the solar radiation As is less than 300 W / m, it is determined that the solar radiation level is "Lv.1". 2 or more, and 550W / m 2 If the solar radiation As is less than 550 W / m, it is determined to be in the solar radiation level "Lv.2". 2 or more, and 800W / m 2 If the solar radiation As is less than 800 W / m, it is determined to be in the solar radiation level "Lv.3". 2 If it is equal to or higher, it is determined that the solar radiation level corresponds to "Lv. 4."

[0047] In the next step S80, the solar radiation level determination unit 15E corrects the solar radiation level determined in the above step S70 according to the weather information corresponding to the current position of the vehicle 2 acquired in the above step S40. In this correction of the solar radiation level, for example, when the weather information corresponding to the current position of the vehicle 2 is "sunny", if the solar radiation level determined in step S70 satisfies a condition of "Lv.2" or lower, the determination result is corrected to a level one step higher than the solar radiation level. That is, even if the weather information is "sunny", if the solar radiation level determined from the detection value of the solar radiation sensor 14 is at a relatively low level (Lv.0 to Lv.2), there is a possibility that the sunlight S did not happen to hit the light receiving surface of the solar radiation sensor 14 at the timing when the detection value of the solar radiation sensor 14 was acquired. Assuming such a situation, in this embodiment, when the above condition is satisfied, the determination result of the solar radiation level is corrected to a level one step higher. In this case, "sunny" refers to weather in which clouds cover 80% or less of the sky (cloud cover), and includes "clear skies" in which cloud cover is less than 10%.

[0048] In addition, when the weather information corresponding to the current position of the vehicle 2 is other than "sunny" (for example, "cloudy" or "rainy" where the cloud cover is 90% or more), if the solar radiation level determined in step S70 satisfies the condition of "Lv.3" or higher, the solar radiation level determination unit 15E corrects the determination result to a level one step lower than the solar radiation level. That is, when the solar radiation level determined from the detection value of the solar radiation sensor 14 is at a relatively high level (Lv.3 or Lv.4) even though the weather information is "cloudy" or "rainy", there is a possibility that sunlight S happened to hit the light receiving surface of the solar radiation sensor 14 at the timing when the detection value of the solar radiation sensor 14 was acquired. Assuming such a situation, in this embodiment, when the above condition is satisfied, the determination result of the solar radiation level is corrected to a level one step lower. The solar radiation level corrected in accordance with the weather information in this manner is transmitted from the solar radiation level determination unit 15E to the correction unit 15G.

[0049] In the next step S90, correction unit 15G refers to the map (Table 1) stored in memory unit 15F to determine a correction value Tc of the inside air temperature corresponding to the combination of the outside air temperature level determined by outside air temperature level determination unit 15B, the neglected level determined by neglected level determination unit 15C, and the solar radiation level determined and corrected by solar radiation level determination unit 15E. In the following step S100, correction unit 15G corrects the inside air temperature Ti indicated by the detection value of inside air temperature sensor 11 acquired in the above-mentioned step S40, using the correction value Tc determined in the above step S90.

[0050] Specifically, for example, when the outdoor air temperature level is "low", the neglected level is "low", and the solar radiation level is "Lv.0", the correction unit 15G determines the correction value Tc of the inside air temperature to be "0" (Tc=0) in accordance with the map association shown in Table 1 above. Then, when the inside air temperature Ti detected by the inside air temperature sensor 11 is, for example, "25°C" (Ti=25), the correction unit 15G calculates the corrected inside air temperature to be "25°C" (Ti+Tc=25+0=25). Also, for example, when the neglected level is "high", the outdoor air temperature level is "high", and the solar radiation level is "Lv.4", the correction unit 15G determines the correction value Tc of the inside air temperature to be "20" (Tc=20) in accordance with the map association in Table 1. When the inside air temperature Ti detected by the inside air temperature sensor 11 is, for example, "25°C" (Ti=25), the correction unit 15G calculates the corrected inside air temperature to be "45°C" (Ti+Tc=25+20=45). The corrected inside air temperature (Ti+Tc) calculated by the correction unit 15G in the above manner is transmitted to the display unit 15H.

[0051] In the next step S110, a control signal is generated in the display unit 15H for displaying the corrected inside air temperature (Ti+Tc) transmitted from the correction unit 15G on the communication terminal 3 outside the vehicle compartment R. The control signal generated in the display unit 15H is transmitted to the communication terminal 3 by using a connected function of the vehicle 2 or the like. In the communication terminal 3, the corrected inside air temperature (Ti+Tc) is displayed on the screen by receiving the control signal from the vehicle 2 side.

[0052] By executing a series of processes from step S10 to step S110 as described above in the display control device 1, the inside air temperature Ti is corrected with high accuracy in accordance with the temperature distribution in the vehicle cabin, so that the temperature in the vehicle cabin that is close to the temperature felt by the user outside the vehicle when he or she gets into the vehicle cabin R can be displayed on the screen of the communication terminal 3 carried by the user. After checking the temperature in the vehicle cabin R displayed on the communication terminal 3, the user can, for example, remotely control an air conditioning device of the vehicle 2 before getting in the vehicle, thereby adjusting the temperature in the vehicle cabin R to a comfortable level in advance.

[0053] Specifically, if the vehicle 2 is left in a place exposed to sunlight S during the day, a temperature distribution occurs in the vehicle interior R, causing a deviation between the inside air temperature Ti detected by the inside air temperature sensor 11 and the user's perceived temperature. In response to this state, the display control device 1 determines whether the vehicle 2 is left unattended based on the coolant temperature Tw detected by the water temperature sensor 13, and corrects the inside air temperature Ti detected by the inside air temperature sensor 11 according to the determined left-standing state, the outside air temperature To detected by the outside air temperature sensor 12, and the amount of solar radiation detected by the solar radiation sensor 14. The corrected inside air temperature (Ti+Tc) takes into account the temperature distribution in the vehicle interior R, and is displayed on the screen of the communication terminal 3 outside the vehicle interior R. As a result, the user can accurately grasp the temperature in the vehicle interior R through the screen display of the communication terminal 3, even if a temperature distribution occurs in the vehicle interior R. Then, if the user performs remote control or pre-control of the air conditioning system of the vehicle 2 based on the detected temperature inside the passenger compartment R, it is possible to prevent the user from feeling uncomfortable while riding due to insufficient temperature adjustment caused by the control, or to prevent the control from being performed more than necessary, resulting in unnecessary consumption of fuel and electricity.

[0054] In addition, in the display control device 1 of this embodiment, the correction value Tc of the inside air temperature is not directly obtained from the detection values ​​of the outside air temperature sensor 12, the water temperature sensor 13, and the solar radiation sensor 14 acquired by the detection value acquisition unit 15A, but the outside air temperature level determination unit 15B, the neglected level determination unit 15C, and the solar radiation level determination unit 15E determine the levels of the parameters of the outside air temperature To, the neglected state of the vehicle 2, and the solar radiation As, and the correction value Tc of the inside air temperature is determined by referring to the map based on the results of each level determination. This makes it possible to simply and quickly perform the correction process of the inside air temperature Ti detected by the inside air temperature sensor 11. In addition, since the ranges of the outside air temperature level, the neglected level, and the solar radiation level are each set to a required width, the error of the detection value by each sensor can be absorbed by the level determination. Therefore, the display control device 1 of the vehicle interior temperature can be easily and inexpensively realized by effectively using various sensors already installed in the vehicle 2. In particular, by dividing the range of outside air temperature into three levels and making a judgment based on that level, as in this embodiment, it is possible to effectively absorb errors in the detection value by the outside air temperature sensor 12, and to correct the inside air temperature to be closer to what the user experiences.

[0055] In addition, in the display control device 1 of this embodiment, the difference ΔTw between the coolant temperature acquired when the engine 23 is stopped and the coolant temperature acquired when the display request is received is obtained, and the abandoned state of the vehicle 2 is determined according to the outside air temperature level and the coolant temperature difference ΔTw. As described above, the specific heat of the engine 23 coolant is greater than the specific heat of air, so that the time change in the coolant temperature when the engine 23 is stopped and the vehicle 2 is left abandoned is more gradual than the time change in the air temperature in the engine room E. Such a gradual time change in the coolant temperature is similar to the time change in the temperature distribution in the passenger compartment R. Therefore, by determining the abandoned state of the vehicle 2 according to the change in the coolant temperature, it is possible to correct the inside air temperature in the passenger compartment R in a state closer to the user's sensible temperature than when the abandoned state of the vehicle 2 is determined by simply measuring the elapsed time since the engine 23 is stopped. In addition, in this embodiment, as shown in Table 3, the abandoned level of the vehicle 2 is determined taking into account not only the coolant temperature difference ΔTw but also the outside air temperature level. This makes it possible to determine the neglect level while taking into account factors such as seasonal fluctuations in cooling water temperature.

[0056] Furthermore, in the display control device 1 of this embodiment, the solar radiation level is determined by dividing the range of solar radiation into five levels, so that fluctuations in solar radiation due to changes in weather conditions can be accurately reflected in the correction of the inside air temperature. In addition, the determination result of the solar radiation level is corrected according to weather information corresponding to the current position of the vehicle 2, so that the inside air temperature can be corrected based on an appropriate solar radiation level suited to the weather conditions.

[0057] Furthermore, in the display control device 1 of this embodiment, the controller 15 is provided in the vehicle 2, and a signal indicating the corrected inside air temperature is transmitted from the controller 15 to the communication terminal 3. As a result, processing related to display control of the vehicle interior temperature is executed on the vehicle 2 side, making it possible to support various types of communication terminals possessed by users and improving user convenience.

[0058] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes are possible based on the technical concept of the present invention. For example, in the above-described embodiment, an example in which the temperature of the cooling water for the engine 23 is detected by the water temperature sensor 13 has been described, but the same effect as in the above-described embodiment can be obtained even if the temperature of the cooling water for cooling a drive device of the vehicle other than the engine (for example, an electric motor, etc.) is detected.

[0059] In the above-described embodiment, an example has been described in which the levels of the outside air temperature To, the abandoned state of the vehicle 2, and the amount of solar radiation As are determined, and the correction value Tc of the inside air temperature is determined according to the map. However, it is also possible to correct the detection value of the inside air temperature sensor 11 in accordance with the abandoned state of the vehicle 2 determined based on the detection value of the water temperature sensor 13 and the detection values ​​of the outside air temperature sensor 12 and the solar radiation sensor 14, without determining the levels of each.

[0060] Furthermore, in the above-described embodiment, an example has been described in which the controller 15 (control means) is provided in the vehicle 2, but a function equivalent to the controller 15 may be provided in the communication terminal 3. In this case, the vehicle 2 is provided with a communication function for transmitting signals indicating the detection values ​​of the inside air temperature sensor 11, the outside air temperature sensor 12, the water temperature sensor 13, and the solar radiation sensor 14 to the communication terminal 3. R Dedicated application software capable of executing a series of processes corresponding to the correction of the inside air temperature as described in the above embodiment is installed on the communication terminal 3. By allowing the communication terminal 3 to perform the correction process of the inside air temperature in this way, the user can individually adjust (tune) the settings for the outside air temperature, the state in which the vehicle 2 is left standing, and the amount of solar radiation, as well as the correction value settings. This allows for more accurate display control of the inside vehicle temperature in accordance with the user's preferences. Regarding the above embodiment and modified examples, the following supplementary notes are further disclosed. (Appendix 1) A vehicle interior temperature sensor that detects the temperature inside the vehicle and displays the detected temperature on a communication terminal outside the vehicle. In the display control device, An inside air temperature detection means for detecting an inside air temperature in a vehicle compartment; an outside air temperature detection means for detecting an outside air temperature outside the vehicle compartment; a water temperature detection means for detecting a temperature of a cooling water for a drive device that drives a vehicle; A solar radiation detection means for detecting the amount of solar radiation in a vehicle interior; determining whether the vehicle is left unattended based on the temperature of the cooling water detected by the water temperature detection means; The determined unused state, the outside air temperature detected by the outside air temperature detection means, and the amount of solar radiation detected by the The inside air temperature detected by the inside air temperature detection means is corrected according to the amount of solar radiation detected by the output means. a control means for displaying the corrected inside air temperature on the communication terminal; A display control device for vehicle interior temperature, comprising: (Appendix 2) The control means When a request for displaying the temperature inside the vehicle compartment is output from the communication terminal, the inside air temperature detection means , the outside air temperature detection means, the water temperature detection means, and the solar radiation detection means A detection value acquisition unit that acquires an output value; A plurality of outdoor air temperature levels are defined by dividing the range of outdoor air temperature into levels, and the detection value The detection value of the outside air temperature detection means acquired by the acquisition unit is any one of the plurality of outside air temperature levels. An outside air temperature level determination unit that determines whether the outside air temperature level corresponds to the above; A plurality of vehicle abandonment levels are defined according to the abandoned state of the vehicle, and the outside temperature the outside air temperature level determined by the temperature level determination unit and the detected value acquired by the detection value acquisition unit A state in which the vehicle has been left unattended is determined in accordance with a value detected by the water temperature detection means, and the determined state in which the vehicle has been left unattended is determined. a neglect level determination unit that determines which of the plurality of neglect levels the A plurality of solar radiation levels are set according to the range of solar radiation in the vehicle interior, The detection value of the solar radiation detection means acquired by the detection value acquisition unit is one of the plurality of solar radiation levels. a solar radiation level determination unit that determines whether the solar radiation level corresponds to a deviation; The plurality of outdoor temperature levels, the plurality of standing levels, and the plurality of solar radiation levels A storage unit that stores a map that associates each combination with a correction value of the inside air temperature; The map stored in the storage unit is referred to and the outdoor air temperature level determination unit determines the outdoor air temperature level, the neglected level determined by the neglected level determination unit, and the solar radiation level A correction value for the inside air temperature corresponding to the combination of the solar radiation levels determined by the bell determination unit is determined, and the correction value is The correction value thus determined is used to obtain the detection value of the inside air temperature detection means acquired by the detection value acquisition unit. A correction unit that corrects the inside air temperature indicated by a display unit that displays the inside air temperature corrected by the correction unit on the communication terminal; 2. A vehicle interior temperature display control device as described in claim 1, comprising: (Appendix 3) The outdoor temperature level determination unit is configured to determine the outdoor temperature range by dividing the outdoor temperature range into three levels. A temperature level is set, and the detection value acquisition unit acquires the detection value of the outside air temperature detection means. The present invention is characterized in that it determines which of the three outdoor temperature levels the value corresponds to. 3. A display control device for vehicle interior temperature as described in 2. (Appendix 4) The detection value acquisition unit acquires the detection value of the water temperature detection means when the drive device is stopped. Get The abandoned vehicle level determination unit classifies the abandoned state of the vehicle into two levels. The outdoor air temperature level determined by the outdoor air temperature level determination unit is set. The detection value acquisition unit acquires the detection value of the water temperature detection means when the drive device is stopped. and a temperature difference between the detected values ​​of the water temperature detection means obtained when the display request for the value is output. In response, the vehicle is judged to be in an abandoned state, and the judged abandoned state is one of the two abandoned levels. Determine which applies to you, 4. A display control device for vehicle interior temperature according to claim 2 or 3. (Appendix 5) The solar radiation level determination unit is configured to determine the range of solar radiation by dividing the range into five levels. The detection value of the solar radiation detection means acquired by the detection value acquisition unit is Any one of claims 2 to 4, characterized in that it is determined which of the five solar radiation levels corresponds to. A display control device for vehicle interior temperature described in any one of the above. (Appendix 6) The control means includes a weather information acquisition unit that acquires weather information corresponding to a current position of the vehicle. Has The solar radiation amount level determination unit determines a solar radiation amount level according to the weather information acquired by the weather information acquisition unit. Modify the quantity level determination results; 6. A vehicle interior temperature display control device according to claim 5. (Appendix 7) The control means is provided in the vehicle and transmits a signal indicating the corrected inside air temperature to the The present invention relates to a communication device and a communication terminal. A display control device for the vehicle interior temperature. (Appendix 8) The control means is provided in the communication terminal, The vehicle includes the inside air temperature detection means, the outside air temperature detection means, the water temperature detection means, and and a signal indicating each of the detection values ​​of the solar radiation detection means to the control means of the communication terminal. Having a communication function capable of transmitting 7. The display control device for vehicle interior temperature according to any one of claims 1 to 6. [Explanation of symbols]

[0061] 1...Vehicle interior temperature display control device 2. Vehicle 3. Communication terminal 11...Inside air temperature sensor (inside air temperature detection means) 12...Outside air temperature sensor (outside air temperature detection means) 13...Water temperature sensor (water temperature detection means) 14...Solar radiation sensor (means for detecting amount of solar radiation) 15...Controller (control means) 15A…Detection value acquisition section 15B…Outside air temperature level determination section 15C…Idle level judgment section 15D…Weather information acquisition section 15E…Solar radiation level judgment section 15F…Storage section 15G…Compensation section 15H…Display section 21…Instrument panel 22…Air conditioning control panel 23…Engine (drive system) As...Solar radiation amount E...Engine room R…Vehicle compartment S…Solar light Tc…Correction value Ti…Inside temperature To…Outside temperature Tw: Cooling water temperature

Claims

1. A vehicle interior temperature transmitting device for transmitting a vehicle interior temperature to a communication terminal capable of displaying the vehicle interior temperature, determining whether the vehicle is left unattended based on a temperature difference between a coolant temperature of a drive unit that drives the vehicle, which is acquired when the drive unit is stopped, and a coolant temperature of the drive unit, which is acquired when a display request for a temperature inside the vehicle compartment is output from the communication terminal; correcting the inside air temperature in the vehicle cabin based on the determined abandoned state of the vehicle; The vehicle interior temperature transmitting device is configured to transmit the corrected inside air temperature to the communication terminal.

2. A vehicle interior temperature transmitting device for transmitting a vehicle interior temperature to a communication terminal capable of displaying the vehicle interior temperature, determining whether the vehicle is left unattended based on a temperature of a cooling water for a drive unit that drives the vehicle; correcting the inside air temperature in the vehicle cabin based on the determined vehicle standing state, the outside air temperature, and the amount of solar radiation; The corrected inside air temperature is transmitted to the communication terminal. A vehicle interior temperature transmitting device characterized in that the correction value for the inside air temperature is determined by referring to a map correlating the outside air temperature, the standing state, the amount of solar radiation, and the inside air temperature.

3. 3. The transmitting device for indicating the temperature inside a vehicle compartment according to claim 2, wherein the amount of solar radiation is corrected in accordance with meteorological information.

4. A communication terminal capable of displaying the temperature inside a vehicle, obtain, from a transmitting device provided in the vehicle, a temperature of a cooling water for the driving device when the driving device is stopped, a temperature of the cooling water for the driving device when a transmission request from the communication terminal is received by the transmitting device, and an inside air temperature in the vehicle cabin; determining whether the vehicle is left unattended based on the acquired temperature difference between the cooling water temperature when the drive device is stopped and the cooling water temperature when the transmission request is received by the transmission device; correcting the inside air temperature in the vehicle cabin based on the determined abandoned state of the vehicle; The communication terminal is configured to display the corrected inside air temperature.

5. Obtaining an outside air temperature and an amount of solar radiation from the transmitting device; correcting the inside air temperature based on the vehicle's abandoned state, the outside air temperature, and the amount of solar radiation; 5. The communication terminal according to claim 4, further comprising: a display unit configured to display the corrected inside air temperature.

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