JP2010001023A - Vehicular display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To judge whether a driver satisfies a temporary stopping condition of an engine or not, while suppressing increase in cost. <P>SOLUTION: A mater ECU executes a program including a step S1100 lighting a water temperature warning light when the temperature of cooling water of an engine is not more than an economy running permission water temperature (NO in S1000), and a step S1300 extinguishing the water temperature warning light when the temperature of the cooling water is more than the economy running permission water temperature (YES in S1000), and when idling stop is permitted (YES in S1200). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device for a vehicle, and more particularly to a display device that displays a state of an engine mounted on the vehicle.

  From the viewpoint of global warming prevention and resource saving, when the vehicle stops at a red light at an intersection, etc., the engine is automatically stopped and the driver operates to start again (for example, by depressing the accelerator pedal) Or an operation such as stopping the depression of the brake pedal), an idling stop system (also called an economy running system or an engine automatic stop and start system) that restarts the engine. It is also described as “eco-run system”).

  In a vehicle equipped with such an idling stop system, control for stopping the engine is performed when a predetermined stop condition is satisfied. However, the driver cannot determine whether or not the vehicle is in a state where a predetermined stop condition is satisfied. In view of such a problem, for example, Japanese Patent Application Laid-Open No. 2004-68675 (Patent Document 1) discloses an engine that can more appropriately eliminate a driver's uncomfortable feeling associated with automatic stop or automatic start of the engine. An information notification device for a vehicle with an automatic stop / start function is disclosed. This information notification device is provided in a vehicle having an engine automatic stop start function for temporarily automatically stopping an in-vehicle engine under a predetermined stop condition and restarting the engine under a predetermined restart condition. It is a device for notifying information related to automatic stop and restart of these engines. During operation of the engine, the information notification device estimates a time required for the condition to be satisfied based on a determination parameter used for determining a specific condition among predetermined stop conditions, and notifies the estimated time.

  According to the information notification device disclosed in Patent Document 1, when the engine cannot be automatically stopped due to a factor difficult for the driver to grasp, the time until the factor is resolved, that is, the engine It is possible to notify the driver of the same time after estimating the time until the vehicle is automatically stopped temporarily. As a result, it is possible to notify the driver in advance of the timing at which the engine is automatically stopped temporarily, and to appropriately eliminate the driver's uncomfortable feeling associated with the automatic stop.

JP 2004-68675 A

  Incidentally, a display device for displaying the state of the coolant temperature of the engine is provided in the driver's seat of the vehicle. On the other hand, the predetermined stop condition for permitting the temporary stop of the engine includes a condition for the coolant temperature of the engine. That is, in order to ensure restart performance and exhaust performance, the engine may be controlled so that temporary stop of the engine is not permitted in a state where engine warm-up has not been completed.

  However, there is a problem that the driver cannot determine whether or not the engine coolant temperature satisfies a predetermined condition from the display device. Therefore, if a new display device is provided to indicate whether or not the engine coolant temperature satisfies a predetermined condition, the resulting increase in cost, securing of a new display device mounting space, or display There is a problem that the structure of the apparatus becomes complicated.

  In Patent Document 1, it is necessary to provide a new display device for displaying the time until the idling stop is started, and the above-described problem occurs.

  The present invention has been made to solve the above-described problems, and its object is to determine whether or not the driver satisfies a temporary engine stop condition while suppressing an increase in cost. It is to provide a display device for a vehicle.

  A vehicle display device according to a first aspect of the present invention is a vehicle display device equipped with an idling stop system that temporarily stops the engine when the state of the vehicle satisfies a predetermined condition. The display device is provided at a position facing the driver's seat of the vehicle, the display means for displaying information according to the cooling water temperature of the engine, the cooling water temperature is higher than a predetermined first temperature, and When the condition of the vehicle satisfies a predetermined condition, permission means for permitting a temporary stop of the engine, and information is displayed if the cooling water temperature is lower than a second temperature that is at least a first temperature or higher. Control means for controlling the display means. The control means includes means for controlling the display means to stop the display when the coolant temperature is higher than the second temperature.

  According to the first invention, when the cooling water temperature becomes higher than the first predetermined temperature (for example, the eco-run permission water temperature) and the vehicle condition satisfies the predetermined condition, the engine is temporarily stopped. That is, idling stop is permitted. When the cooling water temperature is lower than a second temperature (for example, a temperature indicating completion of warm-up), the control means displays information (for example, information indicating that the cooling water temperature is low) so as to display information (for example, the water temperature). Warning light). The control means controls the display means to stop displaying information when the cooling water temperature becomes higher than the second temperature. Since the display means is provided at a position facing the driver's seat of the vehicle, the driver knows that the warm-up has not been completed when information is displayed on the display means. Further, when the display of the information is stopped on the display means, the driver knows that the idling stop is permitted for the engine coolant temperature, and that the engine has been warmed up. Further, as a display means, for example, a water temperature warning lamp can be used, so that it is not necessary to newly provide a display device, and an increase in cost and mounting space can be suppressed. Therefore, it is possible to provide a vehicle display device that can determine whether or not the driver satisfies a temporary engine stop condition while suppressing an increase in cost.

  In the vehicle display device according to the second invention, in addition to the configuration of the first invention, the first temperature and the second temperature are the same.

  According to the second invention, the first temperature and the second temperature are the same. That is, the control means controls the display means (for example, a water temperature warning light) so as to display information (for example, information indicating that the cooling water temperature is low) when the detected cooling water temperature is lower than the first temperature. To do. The control means is controlled so that the display of information by the display means stops when the detected coolant temperature becomes higher than the first temperature. Since the display means is provided at a position facing the driver's seat of the vehicle, the driver is in a state where idling stop is permitted for the coolant temperature of the engine when the display of information on the display means is stopped, It can also be seen that the engine has been warmed up.

  In the vehicle display device according to the third aspect of the invention, in addition to the configuration of the first aspect of the invention, the display means is means for displaying in at least two modes with respect to one mark for displaying the state of the engine. including. When the cooling water temperature is lower than the first temperature, the control means controls the display means to display in the first mode, and when the temporary stop of the engine is permitted, the first mode And means for controlling the display means to display in a different second mode.

  According to the third aspect of the invention, the display means (for example, a water temperature warning lamp) displays in at least two modes with respect to one mark for displaying the state of the engine. When the detected cooling water temperature is lower than the first temperature, the control means displays information (for example, a water temperature warning lamp mark) in the first mode (for example, a lighting state). When the detected coolant temperature of the engine becomes higher than the first temperature, that is, when idling stop is permitted, the control means displays information in a second mode (for example, blinking state) different from the first mode. To do. The control means stops displaying information when the detected coolant temperature of the engine becomes higher than the second temperature. Since the display means is provided at a position facing the driver's seat of the vehicle, the driver is in a state where idling stop is prohibited when the information is displayed in the first manner on the display means, and It can be seen that the engine has not been warmed up. Further, when the information is displayed in the second mode on the display means, the driver may be in a state where idling stop is permitted and the engine has not been warmed up. Recognize. Further, when the display of the information by the display means is stopped, the driver knows that idling stop is permitted and the engine has been warmed up. By changing the display mode at one mark according to the coolant temperature, it is possible to display whether the engine is warmed up and whether idling stop is permitted. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

  In the vehicle display device according to the fourth aspect of the invention, in addition to the configuration of the first aspect of the invention, the display means emits at least two colors with respect to one mark for displaying the state of the engine. including. The control means includes means for controlling the display means to display in the first color when the coolant temperature is lower than the first temperature, and the first color when the engine is temporarily stopped. And means for controlling the display means to display in a different second color.

  According to the fourth invention, the display means (for example, a water temperature warning light) emits at least two colors with respect to one mark for displaying the state of the engine. When the detected coolant temperature of the engine is lower than the first temperature, the control means displays information (for example, a water temperature warning light mark) in the first color. When the detected coolant temperature of the engine becomes higher than the first temperature, that is, when idling stop is permitted, the control means displays information in a second color different from the first color. The control means stops displaying information when the detected coolant temperature of the engine becomes higher than the second temperature. Since the display means is provided at a position facing the driver's seat of the vehicle, the driver is in a state where idling stop is prohibited when information is displayed in the first color on the display means, and It can be seen that the engine has not been warmed up. Further, when the information is displayed in the second color on the display means, the driver may be in a state where idling stop is permitted and the engine has not been warmed up. Recognize. Further, when the display of the information by the display means is stopped, the driver knows that idling stop is permitted and the engine has been warmed up. By changing the color of light emitted from one mark according to the cooling water temperature, it is possible to display whether the engine is warmed up and whether idling stop is permitted. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

  In the vehicle display device according to the fifth aspect of the invention, in addition to the configuration of any one of the first to fourth aspects of the invention, the display means is a water temperature warning lamp.

  According to the fifth invention, it is possible to display the warm-up state of the engine and whether or not the idling stop is permitted by one water temperature warning light. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

  A vehicle display device according to a sixth aspect of the present invention is a vehicle display device equipped with an idling stop system that temporarily stops the engine when the vehicle condition satisfies a predetermined condition. The display device includes a detecting means for detecting a cooling water temperature of the engine, a temporary engine of the engine when the cooling water temperature becomes higher than a predetermined temperature and the vehicle state satisfies a predetermined condition. Permit means for permitting the stop, and display means provided at a position facing the driver's seat of the vehicle and changing so as to indicate a region corresponding to the detected coolant temperature. On the display means, an area lower than a predetermined temperature is highlighted and displayed.

  According to the sixth aspect of the invention, idling stop is permitted when the coolant temperature becomes higher than the first predetermined temperature and the vehicle state satisfies the predetermined condition. The display means (for example, a water temperature gauge for cooling water temperature) is provided at a position facing the driver's seat of the vehicle. The display means changes so as to indicate a region corresponding to the detected cooling water temperature. On the display means, an area lower than a predetermined temperature is highlighted and displayed. Since the display means is provided at a position facing the driver's seat of the vehicle, the driver can emphasize that the area corresponding to the cooling water temperature indicated by the display means is lower than a predetermined temperature. It can be seen that idling stop is prohibited. The driver is in a state where idling stop is permitted for the cooling water temperature when the area corresponding to the cooling water temperature indicated by the display means is higher than a predetermined temperature and is not highlighted. I understand that. Moreover, since a water temperature gauge can be used as the display means, it is not necessary to newly provide a display device, and an increase in cost can be suppressed. Therefore, it is possible to provide a vehicle display device that can determine whether or not the driver satisfies a temporary engine stop condition while suppressing an increase in cost.

  In the vehicle display device according to the seventh aspect of the invention, in addition to the configuration of the sixth aspect of the invention, the display means is a water temperature gauge.

  According to the seventh invention, it is possible to display the engine warm-up state and whether or not idling stop is permitted with one water thermometer. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

It is a figure which shows the structure of the vehicle which concerns on 1st Embodiment. It is a figure which shows the structure of the combination meter which concerns on 1st Embodiment. It is a flowchart which shows the control structure of the program performed by meter ECU of the combination meter which is a display apparatus of the vehicle which concerns on 1st Embodiment. It is a flowchart which shows the control structure of the program performed by meter ECU of the combination meter which is a display apparatus of the vehicle which concerns on the modification of 1st Embodiment. It is a flowchart which shows the control structure of the program performed by meter ECU of the combination meter which is a display apparatus of the vehicle which concerns on 2nd Embodiment. It is a flowchart which shows the control structure of the program performed by meter ECU of the combination meter which is a display apparatus of the vehicle which concerns on 3rd Embodiment. It is a figure which shows the structure of the vehicle which concerns on 4th Embodiment. It is a figure which shows the structure of a water temperature meter.

  Hereinafter, a display device for a vehicle according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
With reference to FIG. 1, an eco-run system in a vehicle on which a combination meter 1000 which is a display device according to an embodiment of the present invention is mounted will be described. In the present embodiment, the transmission of the vehicle on which the eco-run system is mounted may be an automatic transmission or a manual transmission.

  As the hardware system to be controlled in this eco-run system, engine 100 and engine 100 are started and restarted (start operation of engine 100 by an ignition switch is started, and start of operation of engine 100 after a temporary stop by eco-run is restarted. A starter 200 for cranking the engine 100, an alternator 300 connected to the crankshaft pulley of the engine 100 by a belt, an auxiliary load 400 such as a light, audio, and air conditioner compressor, and a starter 200 And a battery (secondary battery) 500 that supplies electric power to the auxiliary load 400. The starter 200 may be a motor generator, and the battery may further include a battery for supplying power when the engine 100 is stopped.

  As a control system for controlling such a hardware system, the eco-run system includes an eco-run ECU (Electronic Control Unit) 2000 and an engine ECU 3000.

  The eco-run ECU 2000 is supplied with a brake signal indicating that the brake interlocked with the brake lamp signal is in operation and a shift signal indicating the shift position of the transmission.

  The engine ECU 3000 includes a signal from an accelerator switch 3100 that detects that the accelerator pedal is depressed, a signal from an EMPS (Electronic Motor Power Steering) sensor 3200 that detects that the steering is being operated, A signal from NE sensor 3300 for detecting the number of revolutions (NE) and a signal from water temperature sensor 3400 for detecting the temperature of cooling water of engine 100 (hereinafter referred to as cooling water temperature) are input.

  In addition, a start command signal and a stop command signal for engine 100 are transmitted from eco-run ECU 2000 to engine ECU 3000, and a sensor signal is transmitted from engine ECU 3000 to eco-run ECU 2000. Engine ECU 3000 transmits a start signal to starter 200 based on the start command signal of engine 100 received from eco-run ECU 2000, starter 200 cranks engine 100, and engine 100 restarts.

  The combination meter 1000 includes a meter ECU 1100 and a water temperature warning lamp 1200. The combination meter 1000 is provided at a position facing the driver's seat. Meter ECU 1100 controls the display of water temperature warning lamp 1200 based on a detection signal corresponding to the coolant temperature received from water temperature sensor 3400 via engine ECU 3000. That is, the meter ECU 1100 turns on or off the mark of the water temperature warning lamp 1200.

  As shown in FIG. 2A, the combination meter 1000 includes a speedometer 1002, a tachometer 1004, and a water temperature warning lamp 1200. In addition to the water temperature warning light 1200, the combination meter 1000 is provided with various warning lights such as a seat belt wearing state and an air bag, but is not particularly limited thereto.

  The water temperature warning lamp 1200 in this embodiment emits at least blue light with respect to one mark as shown in FIG. In the present invention, when the cooling water temperature detected by the water temperature sensor 3400 is equal to or lower than a predetermined temperature that permits idling stop (hereinafter referred to as “eco-run permission water temperature”), light is emitted in blue, and the detected cooling water temperature is detected. When the temperature becomes higher than the eco-run permission water temperature, the water temperature warning lamp 1200 is turned off. Note that the color of light emission is not particularly limited to blue.

  Further, the water temperature warning lamp 1200 may be warned by changing its color by emitting red light or the like when the cooling water temperature detected by the water temperature 3400 is higher than a predetermined warning temperature, or blinking. For example, the warning may be changed by changing the display mode. The warning method when the cooling water temperature is high is not particularly limited to these. The water temperature warning lamp 1200 is configured using, for example, an LED (Light-Emitting Diode) or the like as a light source, but is not particularly limited thereto.

  Hereinafter, with reference to FIG. 3, a control structure of a program executed by meter ECU 1100 of combination meter 1000 which is the display device of the vehicle according to the present embodiment will be described.

  In step (hereinafter, step is referred to as S) 1000, meter ECU 1100 determines whether or not the cooling water temperature detected by water temperature sensor 3400 is higher than a predetermined eco-run permission water temperature. If the coolant temperature of engine 100 is higher than a predetermined eco-run permission water temperature (YES in S1000), the process proceeds to S1200. If not (NO in S1000), the process proceeds to S1100.

  In S1100, meter ECU 1100 controls water temperature warning lamp 1200 so as to display information. That is, the meter ECU 1100 causes the LED to emit light so that the mark of the water temperature warning lamp 1200 is turned on.

  In S1200, meter ECU 1100 determines that idling stop is permitted based on satisfying the idling stop condition for at least the coolant temperature of engine 100. Meter ECU 1100 is in a state where idling stop is permitted based on receiving an permission signal indicating that all predetermined conditions for allowing idling stop are satisfied from eco-run ECU 2000 via engine ECU 3000. You may make it determine with it. “Predetermined conditions” are, for example, the amount of operation of the brake pedal, the amount of operation of the accelerator pedal, the state of the vehicle, etc., and are not particularly limited.

  In S1300, meter ECU 1100 controls water temperature warning lamp 1200 to stop displaying information. That is, meter ECU 1100 stops the light emission of the LED so that the mark of water temperature warning lamp 1200 is turned off.

  The operation of meter ECU 1100 of combination meter 1000 that is the display device for the vehicle according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on an ignition switch (not shown), engine 100 is started. If engine 100 is activated and the coolant temperature detected by water temperature sensor 3400 is not the eco-run permission water temperature (NO in S1000), water temperature warning lamp 1200 is displayed in blue (S1100).

  In accordance with the operation of the engine 100, the coolant temperature of the engine 100 increases. When the coolant temperature detected by water temperature sensor 3400 is higher than the eco-run permission water temperature (YES in S1000), it is determined that idling stop is permitted (S1200), and display of water temperature warning lamp 1200 stops (S1300). ).

  As described above, according to the display device for a vehicle according to the present embodiment, the water temperature warning light is provided at a position facing the driver's seat of the vehicle, so that the driver displays information on the water temperature warning light. If it is, it can be seen that idling stop is prohibited, and that warm-up has not been completed. In addition, when the display of information is stopped in the water temperature warning light, the driver knows that idling stop is permitted at least for the cooling water temperature of the engine. Further, since it is not necessary to provide a new display device that indicates whether or not idling stop is permitted, an increase in cost and mounting space can be suppressed. Therefore, it is possible to provide a vehicle display device that can determine whether or not the driver satisfies a temporary engine stop condition while suppressing an increase in cost.

  Preferably, the eco-run permission water temperature is set to a temperature that also serves as the cooling water temperature of engine 100 indicating completion of warm-up. In this way, the driver confirms that the display of the water temperature warning lamp 1200 is stopped, so that the idling stop is permitted at least for the cooling water temperature of the engine, and the warm-up is completed. I know that there is.

<Modification of First Embodiment>
Hereinafter, a display device for a vehicle according to a modification of the first embodiment will be described. The vehicle display device according to this modification is different from the configuration of the vehicle display device according to the first embodiment described above in that the program executed by the meter ECU 1100 is different. About another structure, it is the same as the structure of the display apparatus of the vehicle which concerns on 1st Embodiment mentioned above. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  In this modified example, if the coolant temperature detected by the coolant temperature sensor 3400 is equal to or lower than the eco-run permission water temperature, light is emitted in blue, the detected coolant temperature is higher than the eco-run permission water temperature, and the engine warm-up is completed. It is characterized in that the water temperature warning light 1200 is turned off when the temperature is higher than the indicated temperature. The temperature indicating completion of engine warm-up is higher than the eco-run permission water temperature. Therefore, by turning off the water temperature warning light 1200, the driver knows that idling stop is permitted and that the engine has been warmed up.

  Hereinafter, with reference to FIG. 4, a control structure of a program executed by meter ECU 1100 of combination meter 1000 that is the display device of the vehicle according to the present embodiment will be described.

  In the flowchart shown in FIG. 4, the same steps as those in the flowchart shown in FIG. 3 are given the same step numbers. The processing is the same for them. Therefore, detailed description thereof will not be repeated here.

  In S1250, meter ECU 1100 determines whether or not the engine cooling water temperature detected by water temperature sensor 3400 is greater than a predetermined water temperature warning lamp extinguishing temperature. Here, the “water temperature warning lamp turn-off temperature” is, for example, a temperature indicating completion of warm-up. If the coolant temperature of engine 100 is greater than the water temperature warning lamp extinguishing temperature (YES in S1250), the process proceeds to S1300. If not (NO in S1250), the process returns to S1250.

  The operation of meter ECU 1100 of combination meter 1000 that is the display device for the vehicle according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on an ignition switch (not shown), engine 100 is started. If engine 100 is activated and the coolant temperature detected by water temperature sensor 3400 is not the eco-run permission water temperature (NO in S1000), water temperature warning lamp 1200 is displayed in blue (S1100).

  In accordance with the operation of the engine 100, the coolant temperature of the engine 100 increases. If the cooling water temperature detected by water temperature sensor 3400 is higher than the eco-run permission water temperature (YES in S1000), it is determined that idling stop is permitted (S1200). Then, when the cooling water temperature further rises and the cooling water temperature becomes higher than the water temperature warning lamp extinguishing temperature (YES in S1250), display of water temperature warning lamp 1200 is stopped (S1300).

  As described above, according to the vehicle display device according to the present modification, in addition to the effects of the vehicle display device according to the first embodiment described above, the driver stops the display of the water temperature warning lamp 1200. By confirming this, it can be seen that idling stop is permitted for the cooling water temperature of the engine, and that the engine has been warmed up.

<Second Embodiment>
Hereinafter, a display device for a vehicle according to the second embodiment will be described. The vehicle display device according to the present embodiment is different from the configuration of the vehicle display device according to the first embodiment described above in that the program executed by the meter ECU 1100 is different from that of the water temperature warning light 1200. The configuration of is different. About another structure, it is the same as the structure of the display apparatus of the vehicle which concerns on 1st Embodiment mentioned above. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  In the present embodiment, the water temperature warning lamp 1200 emits light in at least two display modes with respect to one mark as shown in FIG. The “display mode” indicates, for example, a blinking state or a lighting state in which lighting and extinguishing are repeated at predetermined intervals.

  Hereinafter, with reference to FIG. 5, a control structure of a program executed by meter ECU 1100 of combination meter 1000 that is the display device of the vehicle according to the present embodiment will be described.

  In the flowchart shown in FIG. 5, the same steps as those in the flowchart shown in FIG. 3 are given the same step numbers. The processing is the same for them. Therefore, detailed description thereof will not be repeated here.

  In S2000, meter ECU 1100 causes water temperature warning lamp 1200 to blink. The turn-on time and the turn-off time in the blinking state may be set to the same time, may be set at a predetermined rate, and are not particularly limited.

  In S2100, meter ECU 1100 determines whether or not the cooling water temperature of engine 100 detected by water temperature sensor 3400 is greater than a predetermined water temperature warning lamp extinguishing temperature. Here, the “water temperature warning lamp turn-off temperature” is, for example, a temperature indicating completion of warm-up. If the coolant temperature of engine 100 is greater than the water temperature warning lamp extinguishing temperature (YES in S2100), the process proceeds to S1300. If not (NO in S2100), the process returns to S2100.

  The operation of meter ECU 1100 of combination meter 1000 that is the display device for the vehicle according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on an ignition switch (not shown), engine 100 is started. If engine 100 is activated and the coolant temperature detected by water temperature sensor 3400 is not the eco-run permission water temperature (NO in S1000), water temperature warning lamp 1200 is displayed in blue (S1100).

  In accordance with the operation of the engine 100, the coolant temperature of the engine 100 increases. When the cooling water temperature detected by water temperature sensor 3400 is higher than the eco-run permission water temperature (YES in S1000), it is determined that idling stop is permitted (S1200), and the display of water temperature warning lamp 1200 blinks. (S2000). When the coolant temperature detected by water temperature sensor 3400 is higher than the water temperature warning lamp extinguishing temperature (YES in S2100), water temperature warning lamp 1200 is extinguished (S1300).

  As described above, according to the display device for a vehicle according to the present embodiment, the water temperature warning light is displayed in at least two modes with respect to one mark for displaying the state of the engine. When the detected cooling water temperature is lower than the eco-run permission water temperature, the meter ECU displays a water temperature warning light mark in a lighting state. When the detected coolant temperature of the engine becomes higher than the eco-run permission water temperature, that is, when the idling stop is permitted, the meter ECU displays information in a blinking state. The meter ECU stops displaying information when the detected coolant temperature of the engine becomes higher than the water temperature warning lamp extinguishing temperature. Since the water temperature warning light is provided at a position facing the driver's seat of the vehicle, the driver is in a state where idling stop is prohibited when the water temperature warning light is on and information is displayed, and It can be seen that the engine has not been warmed up. Further, when the information is displayed in a blinking state in the water temperature warning light, the driver knows that idling stop is permitted and the engine has not been warmed up. . Further, when the display of the information by the water temperature warning light is stopped, the driver knows that idling stop is permitted and the engine has been warmed up. By changing the display mode at one mark according to the coolant temperature, it is possible to display whether the engine is warmed up and whether idling stop is permitted. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

<Third Embodiment>
A vehicle display device according to the third embodiment will be described below. The vehicle display device according to the present embodiment is different from the configuration of the vehicle display device according to the first embodiment described above in that the program executed by the meter ECU 1100 is different from that of the water temperature warning light 1200. The configuration of is different. About another structure, it is the same as the structure of the display apparatus of the vehicle which concerns on 1st Embodiment mentioned above. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  In the present embodiment, the water temperature warning lamp 1200 emits light in at least two colors with respect to one mark. The water temperature warning lamp 1200 may include, for example, two LEDs that emit different colors with respect to one mark as a light source, or a combination of three colors (red, blue, and green) that emits a plurality of colors 3 One LED may be included as a light source. In addition, the light source in this Embodiment is not specifically limited to LED. In the water temperature warning lamp 1200 according to the present embodiment, the color emitted for one mark is not particularly limited to dark blue and light blue.

  Hereinafter, with reference to FIG. 6, a control structure of a program executed by meter ECU 1100 of combination meter 1000 that is the display device of the vehicle according to the present embodiment will be described.

  In the flowchart shown in FIG. 6, the same processes as those in the flowchart shown in FIG. The processing is the same for them. Therefore, detailed description thereof will not be repeated here.

  In S3000, meter ECU 1100 controls water temperature warning lamp 1200 so that it is lit in dark blue.

  In S3100, meter ECU 1100 changes the mark color of water temperature warning lamp 1200 from dark blue to light blue. At this time, the meter ECU 1100 may turn off the light source that emits dark blue and turn on the light source that emits light blue.

  The operation of meter ECU 1100 of combination meter 1000 that is the display device for the vehicle according to the present embodiment based on the above-described structure and flowchart will be described.

  When the driver turns on an ignition switch (not shown), engine 100 is started. If engine 100 is activated and the cooling water temperature detected by water temperature sensor 3400 is not the eco-run permission water temperature (NO in S1000), water temperature warning lamp 1200 is displayed in dark blue (S3000).

  In accordance with the operation of the engine 100, the coolant temperature of the engine 100 increases. If the cooling water temperature detected by water temperature sensor 3400 is higher than the eco-run permission water temperature (YES in S1000), it is determined that idling stop is permitted (S1200), and display of water temperature warning light 1200 is dark blue to light blue. (S3100). When the coolant temperature detected by water temperature sensor 3400 is higher than the water temperature warning lamp extinguishing temperature (YES in S2100), water temperature warning lamp 1200 is extinguished (S1300).

  As described above, according to the display device for a vehicle according to the present embodiment, the water temperature warning light emits at least two colors for one mark that displays the state of the engine. When the detected coolant temperature of the engine is lower than the eco-run permission water temperature, the meter ECU displays a water temperature warning light mark in dark blue. When the detected coolant temperature of the engine becomes higher than the eco-run permission water temperature, that is, when idling stop is permitted, the meter ECU displays a water temperature warning light mark in light blue. The meter ECU stops displaying the mark when the detected coolant temperature of the engine becomes higher than the water temperature warning lamp extinguishing temperature. Since the water temperature warning light is provided at a position facing the driver's seat of the vehicle, the driver is in a state where idling stop is prohibited when the mark is displayed in dark blue in the water temperature warning light, and It can be seen that the engine has not been warmed up. Further, when the mark is displayed in light blue on the water temperature warning light, the driver knows that idling stop is permitted and engine warm-up is not completed. In addition, when the display of the mark by the water temperature warning light is stopped, the driver knows that idling stop is permitted and the engine has been warmed up. By changing the color of light emitted from one mark according to the cooling water temperature, it is possible to display whether the engine is warmed up and whether idling stop is permitted. Therefore, since it is not necessary to provide a new display device, it is not necessary to suppress an increase in cost and secure a space for mounting a new display device.

<Fourth embodiment>
Hereinafter, a display device for a vehicle according to a fourth embodiment will be described. The vehicle display device according to the present embodiment is different from the configuration of the vehicle display device according to the first embodiment described above in that the program executed by meter ECU 1100 is different from that of combination meter 1000. The difference is that a water temperature meter 1300 is included instead of the water temperature warning lamp 1200. About another structure, it is the same as the structure of the display apparatus of the vehicle which concerns on 1st Embodiment mentioned above. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  In the present embodiment, combination meter 1000 includes a meter ECU 1100 and a water temperature meter 1300 as shown in FIG. The water temperature meter 1300 changes so as to indicate a region corresponding to the cooling water temperature detected by the water temperature sensor 3400. That is, as shown in FIG. 8, water temperature meter 1300 includes a scale 1304 indicating a predetermined area and a rotation pointer 1302 that changes so as to indicate the predetermined area. The “predetermined region” is a region from the vicinity of “C” indicating the low temperature side to the vicinity of “H” indicating the high temperature side in the drawing, but is not particularly limited. The water temperature meter 1300 receives the cooling water temperature detection signal detected by the water temperature sensor 3400 from the meter ECU 1100, and changes so that the rotation pointer 1302 indicates a region corresponding to the detected cooling water temperature.

  The present invention is characterized in that the water temperature meter 1300 highlights and displays a region lower than a predetermined eco-run permission temperature. In the present embodiment, a region 1306 having a temperature lower than the eco-run permission water temperature on the scale 1304 is highlighted in blue.

  The operation of combination meter 1000, which is a vehicle display device according to the present embodiment, based on the structure and flowchart as described above will be described.

  When the driver turns on an ignition switch (not shown), engine 100 is started. When engine 100 is started, the rotation pointer of water temperature meter 1300 changes according to the coolant temperature detected by water temperature sensor 3400. For example, assuming that the engine 100 is started in the cold state, the rotation pointer 1302 indicates the vicinity of “C” on the scale 1304. That is, according to the operation (warm-up) of engine 100, rotation pointer 1302 changes to the “H” side as the coolant temperature increases. At this time, when the water temperature detected by the water temperature sensor 3400 is lower than the eco-run permission water temperature, the rotation pointer 1302 indicates the region 1306 highlighted in blue on the scale 1304. When the water temperature detected by the water temperature sensor 3400 becomes higher than the eco-run permission water temperature, the rotation pointer 132 points to a region on the “H” side of the region 1306 highlighted in blue on the scale 1304.

  As described above, according to the display device for a vehicle according to the present embodiment, when the cooling water temperature becomes higher than the predetermined first temperature and the condition of the vehicle satisfies the predetermined condition, the engine Is allowed to be temporarily stopped. A water temperature meter for the cooling water temperature is provided at a position facing the driver's seat of the vehicle. The water temperature meter changes so as to indicate a region corresponding to the detected cooling water temperature. On the water temperature meter, a region lower than a predetermined temperature is highlighted and displayed. Since the water temperature meter is provided at a position facing the driver's seat of the vehicle, the driver can emphasize the region corresponding to the cooling water temperature indicated by the rotation pointer of the water temperature meter in an emphasized region that is lower than a predetermined temperature. If so, it can be seen that idling stop is prohibited. The driver is allowed to stop idling for the cooling water temperature when the area corresponding to the cooling water temperature indicated by the rotation pointer of the water temperature meter is higher than a predetermined temperature and is not emphasized. It turns out that it is in a state. Further, since a conventional water temperature meter can be used, it is not necessary to newly provide a display device, and an increase in cost and mounting space can be suppressed. Therefore, it is possible to provide a vehicle display device that can determine whether or not the driver satisfies a temporary engine stop condition while suppressing an increase in cost.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  100 engine, 200 starter, 300 alternator, 400 auxiliary load, 500 battery, 1000 combination meter, 1100 meter ECU, 1200 water temperature warning light, 1300 water temperature meter, 2000 eco-run ECU, 3000 engine ECU, 3100 accelerator switch, 3200 EMPS sensor, 3300 NE sensor, 3400 Water temperature sensor.

Claims (5)

A vehicle display device equipped with an idling stop system that temporarily stops the engine when the vehicle condition satisfies a predetermined condition,
Display means provided at a position facing the driver's seat of the vehicle, for displaying information according to the coolant temperature of the engine;
Permission means for permitting temporary stop of the engine when the cooling water temperature is higher than a predetermined first temperature and the state of the vehicle satisfies the predetermined condition;
Control means for controlling the display means to display the information when the cooling water temperature is lower than at least a second temperature equal to or higher than the first temperature;
The display device for a vehicle, wherein the control means includes means for controlling the display means to stop the display when the cooling water temperature is higher than the second temperature.   The vehicle display device according to claim 1, wherein the first temperature and the second temperature are the same. The display means includes means for displaying in at least two modes with respect to one mark for displaying the state of the engine,
The control means includes
Means for controlling the display means to display in a first manner when the cooling water temperature is lower than the first temperature;
2. The vehicle according to claim 1, further comprising: a unit configured to control the display unit to display in a second mode different from the first mode when the engine is temporarily stopped. Display device. The display means includes means for emitting at least two colors for one mark that displays the state of the engine,
The control means includes
Means for controlling the display means to display in a first color when the cooling water temperature is lower than the first temperature;
2. The vehicle according to claim 1, further comprising means for controlling the display means to display in a second color different from the first color when the engine is temporarily stopped. Display device.   The vehicle display device according to claim 1, wherein the display means is a water temperature warning light.

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