JP2012250628A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle, which enables accurate and objective comparison of traveling information relating to vehicle traveling such as a fuel consumption.SOLUTION: The display device for the vehicle is provided for displaying the traveling information relating to own vehicle traveling. The device includes: a traveling information acquisition means P1 for externally acquiring other vehicle traveling information detected in the other vehicle different from the own vehicle; a traveling information storage means P2 for storing the other vehicle traveling information acquired by the traveling information acquisition means P1 in a traveling information storage unit D1; and a comparison display means P3 for arranging the other vehicle traveling information stored in the traveling information storage unit D1 to the traveling information of the own vehicle and for displaying it in the information display unit D2.

Description

  The present invention relates to a vehicular display device such as a combination meter mounted on a vehicle, and more particularly to a vehicular display device that displays travel information relating to travel of the host vehicle such as fuel efficiency.

  A vehicle such as an automobile is equipped with a combination meter as a vehicle display device. Such a combination meter, for example, is for displaying information necessary for driving the host vehicle such as traveling speed, engine speed, and fuel remaining amount to a passenger such as a driver. Against the backdrop of growing interest in the environment and the environment, etc. so that you can be aware of driving with low fuel consumption (instant fuel consumption), fuel consumption related to the distance traveled from the previous refueling to the current refueling (fuel refueling section fuel consumption), Or the thing which displays the fuel consumption (lifetime fuel consumption) etc. which concern on a total travel distance is increasing. FIG. 16 shows a fuel consumption display in the vehicle display device of Patent Document 1 as an example of the fuel consumption display.

JP 2010-107292 A

  However, since the comparison of fuel consumption as described above is generally performed by visually confirming the value displayed on the combination meter, the accuracy and objectivity are lacking, and the fuel consumption with others is also reduced. There is a problem that the comparison cannot be performed in the vehicle.

  The present invention aims to solve the above problems. That is, an object of the present invention is to provide a vehicular display device that can accurately and objectively compare travel information relating to travel of a vehicle such as fuel efficiency.

  In order to achieve the above object, the invention described in claim 1 is a vehicle display device that displays travel information relating to travel of the host vehicle, as shown in the basic configuration diagram of FIG. Travel information acquisition means P1 for acquiring the travel information of the other vehicle detected in another vehicle different from the vehicle from the outside, and the travel information of the other vehicle acquired by the travel information acquisition means P1 is stored in the travel information storage unit D1 Travel information storage means P2 for performing the above-mentioned, and comparison display means P3 for displaying the travel information of the other vehicle stored in the travel information storage section D1 on the information display section D2 along with the travel information of the host vehicle. It is the display apparatus for vehicles characterized by having.

  In the invention described in claim 2, in the invention described in claim 1, as shown in the basic configuration diagram of FIG. 1, the transmission source information indicating the transmission source and the transmission destination transmitted from the outside are shown. Information receiving means P4 for receiving other vehicle information through wireless receiver D3, including address information assigned to the host vehicle as transmission destination information and travel information of the other vehicle, and received by the information receiving means P4 The transmission source information display means P5 for displaying the transmission source information contained in the other vehicle information that has been displayed on the information display unit D2, and reception confirmation for determining whether or not a predetermined reception confirmation operation has been input to the operation unit D4 An operation determination unit P6, and the travel information acquisition unit P1 is configured to acquire the travel information of the other vehicle included in the other vehicle information received by the information reception unit P4. The travel information storage means P2 inputs the reception confirmation operation to the operation section D4 by the reception confirmation operation determination means P6 after the transmission source information is displayed on the information display section D2 by the transmission source information display means P5. When it is determined, the travel information of the other vehicle is stored in the travel information storage unit D1.

  In the invention described in claim 3, in the invention described in claim 1 or 2, as shown in the basic configuration diagram of FIG. 1, the transmission destination information indicating the transmission destination to the outside is stored in advance. By the information storage unit D5, vehicle information generation means P7 for generating vehicle information including the travel information of the host vehicle and the transmission destination information stored in the transmission destination information storage unit D5, and the vehicle information generation means P7 It further has information transmitting means P8 for transmitting the generated vehicle information through a wireless transmission unit D6.

  In the invention described in claim 4, in the invention described in claim 3, as shown in the basic configuration diagram of FIG. 1, the transmission included in the vehicle information generated by the vehicle information generation means P7. Further includes transmission destination information display means P9 for displaying the destination information on the information display section D2, and transmission confirmation operation determination means P10 for determining whether or not a predetermined transmission confirmation operation has been input to the operation section D4. The information transmission means P8 has input the transmission confirmation operation to the operation section D4 by the transmission confirmation operation determination means P10 after the transmission destination information is displayed on the information display section D2 by the transmission destination information display means P9. When it is determined, the vehicle information is configured to be transmitted through the wireless transmission unit D6.

  In the invention described in claim 5, in the invention described in claim 3 or 4, as shown in the basic configuration diagram of FIG. 1, registration for receiving registration information including registration transmission destination information through the wireless receiver D3 is performed. Information receiving means P11, pre-registration information display means P12 for displaying the registration destination information included in the registration information received by the registration information receiving means P11 on the information display section D2, and a predetermined registration operation A registration operation determination means P13 for determining whether or not the information has been input to the part D4, and an operation part by the registration operation determination means P13 after the registration destination information is displayed on the information display part D2 by the pre-registration information display means P12. When it is determined that the registration operation is input to D4, the transmission destination information storage unit D5 uses the registration transmission destination information included in the registration information as the transmission destination information. A destination information storage unit P14 for storing, is characterized in that it further comprises a.

  According to the first aspect of the present invention, the travel information of the other vehicle detected in another vehicle different from the vehicle on which the vehicle display device of the present invention is mounted, that is, the own vehicle is acquired from the outside, The travel information of the vehicle is stored in the travel information storage unit and displayed on the information display unit along with the travel information of the host vehicle. Therefore, when comparing the travel information, the travel information that may occur in the visual confirmation is displayed. Confirmation errors and arbitrary information operations can be prevented, and traveling information can be compared accurately and objectively. In addition, as a method for comparing the travel information detected in the vehicle, for example, the travel information is uploaded to a server by using a communication function installed in a car navigation device, and the comparison result is confirmed via the Internet from a personal computer or a mobile phone. The comparison result can be easily confirmed on a vehicle display device mounted on the vehicle without using such a large-scale system.

  According to the second aspect of the present invention, the other vehicle information including the address information assigned to the host vehicle as the destination information is received through the wireless reception unit, and the traveling information of the other vehicle included in the other vehicle information. Therefore, it is possible to avoid erroneous comparison of other vehicle information transmitted to another vehicle that is different from the host vehicle, avoid comparison of incorrect driving information, and allow for memory cards, etc. The travel information of the other vehicle detected in the other vehicle can be easily acquired without performing a complicated operation such as attaching and detaching the portable storage means.

  The other vehicle information further includes transmission source information indicating the transmission source. When the other vehicle information is received, the transmission source information is displayed on the information display unit, and after the information is displayed. When a predetermined reception confirmation operation is input to the operation unit, the travel information of the other vehicle included in the received other vehicle information is stored in the travel information storage unit, so the travel information of the other vehicle is stored in the travel information storage unit. Before, the transmission source of other vehicle information can be confirmed, and therefore it is possible to prevent the traveling information of other vehicles from an undesired partner (transmission source) from being stored in the traveling information storage unit.

  According to the invention described in claim 3, vehicle information including travel information of the own vehicle and transmission destination information indicating a transmission destination to the outside stored in advance in the transmission destination information storage unit is generated, Since this vehicle information is transmitted through the wireless transmission unit, the vehicle information is easily detected by the own vehicle toward the outside of another vehicle or the like without performing complicated operations such as attachment / detachment of a portable storage means such as a memory card. Travel information can be transmitted.

  According to the invention described in claim 4, when the transmission destination information included in the vehicle information is displayed on the information display unit, and when a predetermined transmission confirmation operation is input to the operation unit after the information is displayed, Since the vehicle information is transmitted to the outside through the wireless transmission unit, the transmission destination of the vehicle information can be confirmed before the vehicle information is transmitted, and therefore the vehicle information is transmitted to the wrong transmission destination. Can be prevented.

  According to the fifth aspect of the present invention, the registration information including the registration transmission destination information transmitted from the outside is received through the wireless reception unit, and the registration transmission destination information included in the registration information is displayed as information. When a predetermined registration operation is input to the operation unit after it is displayed, the registered transmission destination information included in the registration information is stored in the transmission destination information storage unit as transmission destination information. The registration destination information included in the registration information transmitted from the outside can be stored in the destination information storage unit, the destination information can be easily registered, and the registration destination information included in the registration information Can be confirmed before the information is stored (that is, registered) in the transmission destination information storage unit, so that it is possible to prevent unintentional registration of transmission destination information that is not desired to be registered. .

It is a figure which shows the basic composition of the display apparatus for vehicles of this invention. It is a front view of meter ECU which is one embodiment of a display for vehicles of the present invention. It is a block diagram of meter ECU of FIG. It is a figure explaining an example of the information stored in the EEPROM of FIG. Information transmitted and received through the wireless communication unit of FIG. 3, (a) is vehicle information including the fuel consumption information of the host vehicle, (b) is other vehicle information including the fuel consumption information of the other vehicle, (C) is registration information including a registered transmission destination address. It is a flowchart which shows an example of the fuel consumption display process which concerns on this invention which CPU of FIG. 3 performs. It is a flowchart which shows an example of the transmission destination registration process which concerns on this invention which CPU of FIG. 3 performs. It is a flowchart which shows an example of the fuel consumption calculation process which concerns on this invention which CPU of FIG. 3 performs. It is a flowchart which shows an example of the vehicle information transmission process which concerns on this invention which CPU of FIG. 3 performs. It is a flowchart which shows an example of the other vehicle information reception process which concerns on this invention which CPU of FIG. 3 performs. It is a figure which shows an example of the standard screen displayed on LCD of FIG. It is a figure which shows an example of the registration confirmation screen displayed on LCD of FIG. It is a figure which shows an example of the transmission confirmation screen displayed on LCD of FIG. It is a figure which shows an example of the reception confirmation screen displayed on LCD of FIG. It is a figure which shows an example of the fuel consumption comparison screen displayed on LCD of FIG. It is a figure which shows an example of the fuel consumption display of the conventional display apparatus for vehicles.

  Hereinafter, a meter ECU, which is an embodiment of a vehicle display device of the present invention, will be described with reference to FIGS.

  The meter ECU 1 is a well-known combination meter. As shown in FIG. 2, the meter ECU 1 includes a plurality of pointer meters 20 as a display unit for displaying the traveling speed of the vehicle and the engine speed, and a liquid crystal display (LCD) as an information display unit. ) 30 and various indicator lamps 40 such as turn lamps. As is well known, the meter ECU 1 is provided with a facing plate 8 between the plurality of pointer meters 20 and the LCD 30, and in front of the driver's seat of the vehicle in a state where they are covered with a front glass (not shown). Has been placed. Further, a memory card insertion slot 8a into which the memory card 28 is inserted is provided at a position below the LCD 30 of the facing plate 8, and an external recording medium I / F 18 described later is disposed behind the memory card insertion slot 8a. Yes.

  Each of the plurality of pointer meters 20 includes a dial having a scale and indicators such as numerals, characters, symbols, etc. on the surface, a pointer disposed on the front of the dial, and a pointer according to the amount of state information measured. And an internal unit (not shown) for driving. The plurality of pointer meters 20 of the present embodiment includes a speedometer (SPEED) 20a and a tachometer (REV) 20b.

  As shown in FIG. 3, the meter ECU 1 includes a central processing unit (CPU) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, and an EEPROM 14 (Electrically Erasable ROM). The communication unit 15 and the analog-digital conversion unit (A / D unit) 26 are included.

  The CPU 11 controls the entire meter ECU 1 and performs control according to a program stored in the ROM 12. The CPU 11 is operated by electric power supplied from the battery of the vehicle via the power supply circuit 11j. The CPU 11 is activated in response to a change of the vehicle ignition switch (IGN +) from the OFF state to the ON state (that is, power-on) via the interface (I / F) 11i, and the IGN + is switched from the ON state to the OFF state. The operation is terminated according to the change.

  The CPU 11 is configured as a component of the engine ignition system and a travel pulse signal (speed signal) from a travel sensor (not shown) that outputs a travel pulse every time the vehicle travels a unit distance via the I / F 11i. A pulse signal (engine speed signal) proportional to the engine speed is input from an ignition coil (not shown). When the speed signal is input, the CPU 11 acquires the travel speed indicated by the signal as travel speed information. Further, when the engine speed signal is input, the CPU 11 acquires the engine speed indicated by the signal as engine speed information. Further, the CPU 11 acquires the travel distance of the vehicle based on the travel pulse signal (speed signal), and sequentially accumulates the travel distance acquired in the total travel distance and the section travel distance stored in the EEPROM 14 described later.

  The ROM 12 includes a travel information acquisition unit P1, a travel information storage unit P2, a comparison display unit P3, an information reception unit P4, a transmission source information display unit P5, a reception confirmation operation determination unit P6, and vehicle information generation in the claims shown in FIG. Means P7, information transmission means P8, transmission destination information display means P9, transmission confirmation operation determination means P10, registration information reception means P11, pre-registration information display means P12, registration operation determination means P13, and transmission destination information storage means P14, For example, a control program for causing the CPU 11 to function as various means is stored. The CPU 11 functions as the various means and the like by executing the control program. The ROM 12 stores various information used by a control program. The RAM 13 stores various data and has an area necessary for processing operations of the CPU 11.

  The EEPROM 14 is an electrically erasable / rewritable read-only memory, and is electrically connected to the CPU 11. As shown in FIG. 4, the EEPROM 14 includes (1) the total travel distance at the previous refueling, (2) the total travel distance at the present time (ODD), (3) the section travel distance (TRIP) from the previous reset, (4) Total oil supply amount, (5) Own vehicle address that is an IP address assigned to the own vehicle on which the meter ECU 1 is mounted for wireless LAN communication described later, and (6) described later for wireless LAN communication. To a destination address which is an IP address assigned to a destination to which the vehicle information J1 is transmitted, (7) Fuel consumption information of the own vehicle, (8) Other vehicle information J2 described later received from another vehicle different from the own vehicle The fuel consumption information of other vehicles included is stored. The EEPROM 14 corresponds to a transmission destination information storage unit and a travel information storage unit in the claims. The IP address corresponds to the address information in the claims, the own vehicle address corresponds to the source information in the claims, the destination address corresponds to the destination information in the claims, The fuel consumption information of the vehicle corresponds to the traveling information of the own vehicle in the claims, and the fuel consumption information of the other vehicle corresponds to the traveling information of the other vehicle in the claims.

  The communication unit 15 is communicably connected to an in-vehicle network (not shown) such as a CAN built in the vehicle via the I / F 11i, and communicates with other electronic devices connected to the in-vehicle network using a communication protocol such as CAN. Do. The communication unit 15 sends information input from the CPU 11 to other electronic devices, and receives information sent from the other electronic devices and outputs the information to the CPU 11. For example, the opening / closing information of the fuel filler opening detected by another electronic device is input to the CPU 11 through the communication unit 15, and the start and end of the fueling state are detected based on the opening / closing information.

  The A / D unit 26 is composed of a well-known analog-digital conversion module, which is transmitted from a liquid level sensor (not shown) and becomes an analog voltage proportional to the liquid level in the fuel tank provided in the host vehicle. A liquid level signal is input, the analog voltage is quantized and converted into a digital value, and output to the CPU 11. The CPU 11 detects the remaining amount of fuel in the fuel tank based on this digital value.

  A motor driver 16 and an LCD driver 17 are electrically connected to the CPU 11. The motor driver 16 is electrically connected to two pointer instruments 20 including a speedometer 20a and a tachometer 20b. The motor driver 16 drives the internal unit (motor) of each meter 2 under the control of the CPU 11. Thus, each pointer instrument 20 rotates the pointer to the indicated position corresponding to the drive signal by the drive signal input via the motor driver 16, and cooperates with the dial index to run speed information and the engine. Displays rotation speed information.

  An LCD 30 is electrically connected to the LCD driver 17 and is driven under the control of the CPU 11. The LCD 30 is configured to be able to display various types of information in response to requests from the CPU 11. In the present embodiment, the LCD driver 17 receives various information requested from the CPU 11 (total vehicle travel distance (ODD) and section travel distance (TRIP) 31, warning 32, shift indicator 33, fuel remaining amount information 34, Fuel consumption information 38, carbon dioxide emission information 39, etc.) are displayed on the LCD 30.

  Further, a wireless communication unit 27 capable of wireless communication is connected to the CPU 11 via the I / F 11i. The wireless communication unit 27 transmits / receives various information to / from a wireless communication unit of a meter ECU mounted on another nearby vehicle or a wireless communication terminal such as a personal computer or a mobile phone in accordance with the control of the CPU 11. I do. In the present embodiment, the wireless communication unit 27 conforms to a wireless LAN standard (IEEE802.11 series, etc.), and is configured to enable ad hoc connection with other wireless communication units and wireless communication terminals. Has been. Of course, in addition to this, various types of information may be transmitted and received by short-range wireless communication between wireless communication devices using Bluetooth or infrared rays.

  The CPU 11 transmits and receives vehicle information J1, other vehicle information J2, registration information J3, and the like, which are shown in FIGS. 5A, 5B, and 5C, through the wireless communication unit 27.

  The vehicle information J1 is information that is generated when the fuel consumption information of the host vehicle calculated (detected) by the meter ECU 1 is transmitted to the outside, and is the host vehicle address and the destination address stored in the EEPROM 14 as a source address. The destination address stored in the EEPROM 14 and the fuel efficiency information (lifetime fuel efficiency / fueling section fuel efficiency [km / L]) of the host vehicle are included. Lifetime fuel efficiency is the fuel efficiency calculated from the total distance traveled by the vehicle and the total amount of fuel supplied to the vehicle, and the fueling section fuel efficiency means that the vehicle traveled from the previous fueling to the current fueling. It is the fuel consumption calculated | required from the travel distance and the amount of oil supplied at the time of refueling this time.

  Further, the other vehicle information J2 is the vehicle information J1 generated in another vehicle different from the own vehicle, and is an IP address assigned to an information transmission device such as another vehicle as a transmission source address, and a transmission partner as a transmission destination address. And an IP address assigned to the vehicle (the vehicle address if the vehicle is addressed to the vehicle), and fuel consumption information (lifetime fuel consumption / fueling section fuel consumption [km / L]) of other vehicles.

  Further, the registration information J3 is information including an IP address for which registration is requested as a transmission destination address in the EEPROM 14 (that is, a registration transmission destination address), and an IP assigned to an information communication device such as another vehicle as the transmission source address. This includes an address, an IP address assigned to the transmission partner as the transmission destination address (the own vehicle address in the case of being addressed to the own vehicle), and a registered transmission destination address. The registered transmission destination address corresponds to the registered transmission destination information in the claims.

  In addition, an external recording medium I / F 18 is electrically connected to the CPU 11. The external recording medium I / F 18 is provided with a reader / writer unit to which a memory card 28 which is a portable storage means such as a CF card or an SD card can be attached and detached. The external recording medium I / F 18 records various types of information on the memory card 28 attached to the reader / writer unit and reads various types of information recorded on the memory card 28 under the control of the CPU 2.

  In addition, an operation switch 5 that is operated when switching information to be displayed on the LCD 30 is provided. The operation switch 5 is connected to the CPU 11. The CPU 11 detects various operations input to the operation switch 5, switches the display on the LCD 30 in response to these various operations, or resets the section travel distance. Or transmit vehicle information J1.

  In addition, a predetermined reception confirmation operation or cancel operation is input to the operation switch 5 at the time of reception confirmation of other vehicle information, which will be described later, and a predetermined transmission confirmation operation or cancel operation is input at the time of vehicle information transmission confirmation. Then, at the time of confirming registration of the registered transmission destination address, a predetermined registration operation or cancel operation is input, and the CPU 11 detects these operations and performs an operation according to the input operation.

  Hereinafter, an example of processing (fuel consumption display processing, transmission destination registration processing, fuel consumption calculation processing, vehicle information transmission processing, other vehicle information reception processing) according to the present invention in the CPU 11 provided in the meter ECU 1 described above will be described with reference to FIGS. This will be described with reference to a flowchart. The host vehicle on which the meter ECU 1 is mounted is assigned “192.168.1.1” as an IP address for wireless LAN communication, that is, the host vehicle address. “192.168.1.2” is assigned as the IP address to the other vehicle.

  When the meter ECU 1 is powered on, the CPU 11 executes a predetermined initialization process, and then displays the traveling speed and the engine speed on the speedometer 20a and the speedometer 20b based on the various signals input. As shown in FIG. 11, a process for displaying a standard screen for displaying the total travel distance (ODD) and section travel distance (TRIP) 31, warning 32, shift indicator 33, etc. of the vehicle on the LCD 30 is executed. In parallel with the process, the fuel consumption display process shown in FIG. 6 is executed.

  In the fuel consumption display process, first, a transmission destination registration process (S100, S110 to S150 in FIG. 7) is executed.

  In the transmission destination registration process, in the state where the standard screen shown in FIG. 11 is displayed on the LCD 30, for example, as shown in FIG. 5C, the registration information J3 including the own vehicle address as the transmission destination address is stored in the wireless communication unit. 27 (S110), if the registration information J3 is not received (N in S110), the destination registration process is terminated, and if it is received (Y in S110), the corresponding The registration transmission destination address included in the registration information J3 is acquired (S120), and this registration transmission destination address is displayed on the LCD 30 together with the registration confirmation message (S130, reference numeral 35 on the registration confirmation screen in FIG. 12). In this state, that is, when confirming registration of the registered transmission destination address, if a long press operation (for example, a continuous press operation for 3 seconds or more) is input to the operation switch 5, it is assumed that a predetermined registration operation is input ( In S140, the registered transmission destination address is stored in the EEPROM 14 as a transmission destination address (S150), or when a short press operation (for example, a press operation for less than 3 seconds) is input to the operation switch 5, a cancel operation is performed. Is entered (N in S140), the registered transmission destination address is not stored in the EEPROM 14 but discarded. Then, the display of the registered transmission destination address is deleted and the standard screen (FIG. 11) is restored, and the transmission destination registration process is terminated.

  When the transmission destination registration process ends, next, a fuel consumption calculation process (S200, S210 to S270 in FIG. 8) is executed.

  In the fuel consumption calculation process, it is determined whether or not the fuel filler opening information is input to the CPU 11 through the communication unit 15 (S210). If the opening information is not input (N in S210), the fuel consumption calculation process is performed. If it has been input and input (Y in S210), it is assumed that the fuel supply state has been reached, and the remaining fuel amount before refueling is detected based on the liquid level signal, and then the refueling port is closed through the communication unit 15. After waiting for the information to be input, when the closing information is input, the remaining amount of fuel after refueling is detected again based on the liquid level signal, and the fuel refueling amount is acquired from these differences (S220). . Then, the total travel distance and the total travel distance at the previous refueling are acquired from the EEPROM 14 (S230, S240), the travel distance from the previous refueling is acquired from these differences, and the refueling is performed from the travel distance and the fuel supply amount. The section fuel consumption is calculated (S250). Then, the fuel supply amount is added to the total fuel supply amount of the EEPROM 14, and the lifetime fuel consumption is calculated from the total travel distance and the total fuel supply amount (S260). Then, the fueling section fuel consumption and the lifetime fuel consumption are stored in the EEPROM 14 as the fuel consumption information of the host vehicle (S270). Then, the fuel consumption calculation process ends.

  When the fuel consumption calculation process is finished, a vehicle information transmission process (S300, S310 to S360 in FIG. 9) is executed.

  In the vehicle information transmission process, in the state where the standard screen shown in FIG. 11 is displayed on the LCD 30, it is determined whether or not the short press operation is continuously input twice to the operation switch 5 (S 310). If the operation has not been input (N in S310), the vehicle information transmission process is terminated. If the operation has been input (Y in S310), the own vehicle address, the transmission destination address, and the own vehicle stored in the EEPROM 14 The fuel consumption information is acquired, and for example, vehicle information J1 including such information as shown in FIG. 5A is generated (S320). And the transmission destination address contained in this vehicle information J1 is acquired (S330), and this transmission destination address is displayed on LCD30 with a transmission confirmation message (S340, code | symbol 36 of the transmission confirmation screen of FIG. 13). In this state, that is, when confirming transmission of the vehicle information J1 to the transmission destination address, if the long press operation is input to the operation switch 5, it is assumed that a predetermined transmission confirmation operation is input (Y in S350). Vehicle information J1 is transmitted to the transmission destination address through the wireless communication unit 27 (S360), or when the short press operation is input to the operation switch 5, it is assumed that a cancel operation is input (N in S360). The vehicle information J1 is discarded without being transmitted. Then, the display of the transmission destination address is deleted, the standard screen (FIG. 11) is restored, and the vehicle information transmission process is terminated.

  When the vehicle information transmission process is completed, another vehicle information reception process (S400, S410 to S470 in FIG. 10) is executed.

  In the other vehicle information reception process, in a state where the standard screen shown in FIG. 11 is displayed on the LCD 30, for example, as shown in FIG. 5B, other vehicle information J2 including the own vehicle address as a transmission destination address is wirelessly transmitted. It is determined whether or not the other vehicle information J2 is received through the communication unit 27 (S410). If the other vehicle information J2 is not received (N in S410), the other vehicle information reception process is terminated and received (S410). Y) The transmission source address included in the other vehicle information J2 is acquired (S420), and this transmission source address is displayed on the LCD 30 together with the reception confirmation message (S430, reference numeral 37 of the reception confirmation screen in FIG. 14). In this state, that is, when confirming reception of other vehicle information from the transmission source address, if the long press operation is input to the operation switch 5, it is assumed that a predetermined reception confirmation operation is input (Y in S440). The fuel consumption information detected in the other vehicle included in the other vehicle information J2 is acquired (S450), and the fuel consumption information of the other vehicle is stored in the EEPROM 14 (S460). Then, as shown in FIG. 15, the other vehicle fuel consumption information (indicated by reference numeral 38b) stored in the EEPROM 14 is displayed along with the own vehicle fuel consumption information (indicated by reference numeral 38a) stored in the EEPROM 14, and the other vehicle fuel consumption information is displayed. A fuel consumption comparison screen for displaying a transmission source address (indicated by reference numeral 38 c) indicating another vehicle is displayed on the LCD 30. When the short press operation is input to the operation switch 5 while the fuel consumption comparison screen is displayed, the lifetime fuel consumption / fuel supply section fuel consumption is toggled and displayed. And when the said long press operation is input in the state which is displaying the fuel-consumption comparison screen, it will return to a standard screen (FIG. 11) and will complete | finish another vehicle reception process. Alternatively, when the short press operation is input to the operation switch 5 when confirming the reception of the other vehicle information from the transmission source address, the cancel operation is input (N in S440), and the other vehicle information J2 Is discarded, the screen returns to the standard screen (FIG. 11), and the other vehicle information reception process ends.

  When the other vehicle information reception process ends, the process returns to the transmission destination registration process, and thereafter the above-described process is repeated. Further, in the processing performed in parallel with the fuel consumption display processing described above, if the short press operation is input once to the operation switch 5 while the standard screen (FIG. 11) is being displayed, it is received before. A process of displaying a fuel consumption comparison screen (FIG. 15) for displaying the fuel consumption information of the other vehicle stored in the EEPROM 14 along with the fuel consumption information of the own vehicle is performed.

  Step S450 described above corresponds to the travel information acquisition means P1 in the claims, step S460 corresponds to the travel information storage means P2 in the claims, and step S470 corresponds to the comparison display means P3 in the claims. Step S410 corresponds to the information receiving means P4 in the claims, step S430 corresponds to the transmission source information display means P5 in the claims, and step S440 corresponds to the reception confirmation operation determining means P6 in the claims. Step S320 corresponds to the vehicle information generation means P7 in the claims, Step S360 corresponds to the information transmission means P8 in the claims, and Step S340 corresponds to the transmission destination information display means in the claims. Step S350 corresponds to the transmission confirmation operation determination means P10 in the claims, and step S110 corresponds to the registration information reception means P11 in the claims. Step S130 corresponds to the pre-registration information display means P12 in the claims, Step S140 corresponds to the registration operation determination means P13 in the claims, and Step S150 corresponds to the transmission destination information storage means in the claims. Corresponds to P14.

  In order to make the processing configuration simpler, in the transmission destination registration process described above, steps S130 and S140 may be deleted to omit the registration confirmation process. In the vehicle information transmission process described above, steps S330 to S350 may be performed. May be deleted and the transmission confirmation process may be omitted. In the other vehicle information reception process described above, steps S420 to S440 may be deleted and the reception confirmation process may be omitted. In step S320, vehicle information including the transmission destination address and fuel consumption information and not including the own vehicle address may be generated. The fuel consumption display process only needs to include at least other vehicle information reception processing, and the fuel consumption information of the host vehicle is received through the communication unit 15 as detected by another electronic control unit (ECU). Also good.

  As described above, according to the present invention, fuel consumption information of another vehicle detected in a vehicle on which the meter ECU 1 is mounted, that is, another vehicle different from the host vehicle is acquired from the outside, and the fuel consumption information of this other vehicle is stored in the EEPROM 14. Since it is stored and displayed on the LCD 30 side by side with the fuel consumption information of the host vehicle, it is possible to prevent erroneous confirmation of fuel consumption information or arbitrary information manipulation that may occur in visual confirmation when comparing fuel consumption information. It is possible to compare fuel consumption information accurately and objectively. In addition, as a method of comparing fuel consumption information detected in a vehicle, for example, the fuel consumption information is uploaded to a server using a communication function installed in a car navigation device or the like, and the comparison result is confirmed via the Internet from a personal computer or a mobile phone. The comparison result can be easily confirmed on the meter ECU 1 mounted on the vehicle without using such a large-scale system.

  In addition, since the other vehicle information J2 including the own vehicle address assigned to the own vehicle as the transmission destination address is received through the wireless communication unit 27, the fuel consumption information of the other vehicle included in the other vehicle information J2 is acquired. Other vehicle information J2 transmitted to another vehicle different from the vehicle is not erroneously received, and erroneous comparison of fuel consumption information can be avoided, and portable storage means such as a memory card can be used. The fuel consumption information of the other vehicle detected in the other vehicle can be easily acquired without performing a complicated operation such as attachment / detachment.

  Further, the other vehicle information J2 further includes a transmission source address indicating the transmission source. When the other vehicle information J2 is received, the transmission source address is displayed on the LCD 30, and after that is displayed. When a predetermined reception confirmation operation is input to the operation switch 5, the fuel consumption information of the other vehicle included in the received other vehicle information J2 is stored in the EEPROM 14, so that before the fuel consumption information of the other vehicle is stored in the EEPROM 14, the other The transmission source of the vehicle information J2 can be confirmed. Therefore, it is possible to prevent the fuel consumption information of other vehicles from an undesired partner (transmission source) from being stored in the EEPROM 14.

  In addition, since the vehicle information J1 including the fuel consumption information of the own vehicle and the transmission destination address indicating the transmission destination to the outside stored in advance in the EEPROM 14 is generated, the vehicle information J1 is transmitted through the wireless communication unit 27. The fuel consumption information detected by the own vehicle can be easily transmitted to the outside of another vehicle or the like without performing a complicated operation such as attachment / detachment of a portable storage means such as a memory card.

  Further, the transmission destination address included in the vehicle information J1 is displayed on the LCD 30, and when the predetermined transmission confirmation operation is input to the operation switch 5 after the display, the vehicle information J1 is externally transmitted through the wireless communication unit 27. Therefore, it is possible to confirm the transmission destination of the vehicle information J1 before transmitting the vehicle information J1, and therefore it is possible to prevent the vehicle information J1 from being transmitted to the wrong transmission destination.

  Further, since the vehicle information J1 is generated by including the own vehicle address assigned to the own vehicle stored in advance in the EEPROM 14 as the transmission source address, the transmission source of the vehicle information J1 can be clarified. In another vehicle different from the host vehicle that received the information J1 as the other vehicle information J2, the fuel consumption information comparison partner can be clearly grasped by referring to the transmission source, and the fuel consumption information comparison with an undesired partner can be performed. Can be avoided.

  In addition, the registration information J3 including the registered transmission destination address transmitted from the outside is received through the wireless communication unit 27, and the registered transmission destination address included in the registration information J3 is displayed on the LCD 30 and displayed. After that, when a predetermined registration operation is input to the operation switch 5, the registered transmission destination address included in the registration information J3 is stored in the EEPROM 14 as the transmission destination address, so that it is included in the registration information J3 transmitted from the outside. The registered transmission destination address can be stored in the EEPROM 14, so that the transmission destination address can be easily registered, and before the registered transmission destination address included in the registration information J3 is stored (that is, registered) in the EEPROM 14. You can check the registered destination address, so there are destination addresses that you do not want to register. Possible to prevent registered without FIG.

  In the above-described embodiment, the CPU 11 transmits / receives the vehicle information J1, the other vehicle information J2, and the registration information J3 to / from the outside through the wireless communication unit. However, the present invention is not limited to this. For example, the CPU 11 writes the vehicle information J1 to the memory card 28 through the external recording medium I / F 18, or reads the other vehicle information J2 and the registration information J3 from the memory card 28, and uses the memory card 28. Such information may be exchanged with the outside.

  In the present embodiment, the CPU 11 stores the fuel consumption information of the other vehicle included in the received other vehicle information J2 in the EEPROM 14, but displays the fuel consumption information side by side only when the other vehicle information J2 is received. In this case, the fuel consumption information of the other vehicle may be temporarily stored in the RAM 13.

  In the present embodiment, the IP address used for wireless LAN communication is displayed as it is for the host vehicle address, the transmission source address, the transmission destination address, and the registered transmission destination address. However, the present invention is not limited to this. Instead, for example, nickname information corresponding to the IP address is provided and stored in the EEPROM 14 together with the IP address, and as this nickname information, for example, the registration number of the vehicle and the name of the vehicle owner are set, and the nickname information is By displaying the host vehicle address, the transmission source address, the transmission destination address, and the registered transmission destination address, it is possible to make the communication partner and the like easier to understand.

  In the present embodiment, the IP address used for wireless LAN communication is used as address information for identifying the own vehicle or the like. However, the present invention is not limited to this. As long as it is information that can identify a vehicle in communication, such as a number, the type used as address information is arbitrary.

  Further, in the present embodiment, the fuel consumption information is compared as the travel information related to the travel of the vehicle. However, the present invention is not limited to this. For example, the total travel distance, the rapid acceleration / deceleration of the vehicle, and the like. Further, a dangerous traveling index obtained by quantifying dangerous traveling such as a sudden steering wheel may be compared as traveling information, and the type of traveling information to be compared is arbitrary as long as it does not contradict the purpose of the present invention.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

1 Meter ECU (Vehicle display device)
5 Operation switch (operation unit)
11 CPU (travel information acquisition means P1, travel information storage means P2, comparison display means P3, information reception means P4, transmission source information display means P5, reception confirmation operation determination means P6, vehicle information generation means P7, information transmission means P8, (Transmission destination information display means P9, transmission confirmation operation determination means P10, registration information reception means P11, pre-registration information display means P12, registration operation determination means P13, transmission destination information storage means P14)
14 EEPROM (destination information storage unit, travel information storage unit)
30 Liquid crystal display (information display part)
27 Wireless communication unit (wireless receiver, wireless transmitter)
J1 Vehicle information J2 Other vehicle information J3 Registration information

Claims (5)

A vehicle display device that displays travel information relating to travel of the host vehicle,
Travel information acquisition means for acquiring travel information of another vehicle detected in another vehicle different from the host vehicle from the outside;
Travel information storage means for storing travel information of the other vehicle acquired by the travel information acquisition means in a travel information storage unit;
A vehicle display device, comprising: a comparison display unit that displays the travel information of the other vehicle stored in the travel information storage unit on the information display unit along with the travel information of the host vehicle. Wirelessly transmits other vehicle information including externally transmitted source information indicating a transmission source, address information assigned to the host vehicle as transmission destination information indicating a transmission destination, and travel information of the other vehicle. Information receiving means for receiving through the receiving unit;
Transmission source information display means for displaying the transmission source information included in the other vehicle information received by the information reception means on an information display unit;
A reception confirmation operation determination means for determining whether or not a predetermined reception confirmation operation is input to the operation unit;
The travel information acquisition unit is configured to acquire the travel information of the other vehicle included in the other vehicle information received by the information reception unit,
The travel information storage means determines that the reception confirmation operation has been input to the operation section by the reception confirmation operation determination means after the transmission source information is displayed on the information display section by the transmission source information display means. The vehicle display device according to claim 1, wherein travel information of the other vehicle is stored in the travel information storage unit. A transmission destination information storage unit in which transmission destination information indicating a transmission destination to the outside is stored in advance;
Vehicle information generation means for generating vehicle information including travel information of the host vehicle and the transmission destination information stored in the transmission destination information storage unit;
The vehicle display device according to claim 1, further comprising: an information transmission unit that transmits the vehicle information generated by the vehicle information generation unit through a wireless transmission unit. Transmission destination information display means for displaying the transmission destination information included in the vehicle information generated by the vehicle information generation means on an information display unit;
Transmission confirmation operation determination means for determining whether or not a predetermined transmission confirmation operation has been input to the operation unit,
When the information transmission unit determines that the transmission confirmation operation is input to the operation unit by the transmission confirmation operation determination unit after the transmission destination information is displayed on the information display unit by the transmission destination information display unit The vehicle display device according to claim 3, wherein the vehicle information is transmitted through a wireless transmission unit. Registration information receiving means for receiving registration information including registration destination information through a wireless receiver;
Pre-registration information display means for displaying the registration transmission destination information included in the registration information received by the registration information receiving means on an information display section;
Registration operation determination means for determining whether or not a predetermined registration operation has been input to the operation unit;
Included in the registration information when the registration operation determining means determines that the registration operation has been input to the operation section after the registration destination information is displayed on the information display section by the pre-registration information display means. The vehicle display according to claim 3 or 4, further comprising transmission destination information storage means for storing the registered transmission destination information as the transmission destination information in the transmission destination information storage unit. apparatus.

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