JP6285656B2 - Display device - Google Patents

Description

  The present invention relates to a display device that can be used for, for example, a vehicle meter unit that displays instruments such as a speedometer and a fuel meter, and more particularly to a display device that can perform graphic display.

  In recent years, an image display type graphic meter that displays an automobile meter on a screen using a display device such as a liquid crystal display is known.

  Further, a technique is known in which a virtual vehicle representing the appearance of a vehicle is displayed on a meter, and a fault location of the host vehicle on which the meter is mounted is presented by indicating a part of the virtual vehicle (for example, (See Patent Document 1).

  Patent Document 1 discloses a display device that displays a virtual vehicle three-dimensionally and indicates an abnormality occurrence location using the virtual vehicle.

Japanese Patent Laid-Open No. 5-112161

  However, in the display device disclosed in Patent Document 1, the failure location is simply displayed on the screen. Therefore, when the failure occurrence is recognized, the failure occurrence location is easily understood, but the failure occurrence itself is operated. It was lacking in impact to make people aware. For this reason, the driver may not be aware that the display state of the display device has transitioned to a state in which the location where the failure has occurred is displayed.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a display device in which a driver can easily notice a transition of a display state.

In order to achieve the above-described object, the display device according to the present invention is characterized by the following points. (1) A display device that includes a display unit that displays various display elements including a virtual vehicle, and is used by being mounted on the host vehicle.
The display unit is at least one during the transition of the display state of the display unit from the first state in which the virtual vehicle is displayed to the second state in which information about the host vehicle is presented using the virtual vehicle. In the time zone, display the virtual vehicle so that the movable part of the virtual vehicle operates,
In the second state, the display unit presents a failure location of the host vehicle using the virtual vehicle .
(2) The display device according to (1) above,
The movable part is a door part capable of opening and closing the virtual vehicle.
(3) The display device according to any one of (1) and (2) above,
The display unit displays the virtual vehicle so that the virtual vehicle rotates in at least one hour during the transition of the display state of the display unit from the first state to the second state .

In the display device having the above configuration (1), the movable part of the virtual vehicle operates in an hour period until the transition from the first state to the second state. Attract attention. For this reason, it is easy for the driver to notice that the display state of the display unit transitions to the second state and information related to the host vehicle is presented. As information about the host vehicle, any information can be adopted as long as it can be presented using a virtual vehicle. For example, it is possible to present a fault location of the host vehicle by pointing to a part of the virtual vehicle , or to notify that the door of the host vehicle remains open by opening and closing the door portion of the virtual vehicle. Can Moreover, as a movable part, the arbitrary places which can operate | move in a virtual vehicle can be utilized. For example, door portions such as a front door, a rear door, and a bonnet may be opened and closed, and a side mirror, a tire, and the like may be operated.
Furthermore, according to the display device having the above configuration (1), the driver can easily notice that the display state of the display unit is changed to the second state and the failure location of the host vehicle is presented.
According to the display device having the configuration (2), the driver's attention can be attracted by opening and closing the door portion of the virtual vehicle.
According to the display device having the configuration (3), the driver's attention can be drawn by rotating the virtual vehicle .

  According to the present invention, it is possible to provide a display device in which the driver can easily notice the transition of the display state.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a diagram illustrating a hardware configuration example of a display device according to the embodiment. FIG. 2A to FIG. 2C are diagrams showing a transition of the graphic display area displayed on the display unit and the display content thereof. FIG. 3D to FIG. 3F are diagrams showing the transition of the graphic display area displayed on the display unit and the display content thereof. FIG. 4 is a flowchart showing a display operation procedure of the display device.

  Hereinafter, the display device according to the present embodiment will be described with reference to the drawings. The display device of this embodiment is applied to a graphic meter installed on an instrument panel in a vehicle compartment.

<Hardware configuration>
FIG. 1 is a diagram illustrating a hardware configuration example of the display device 100 according to the embodiment. As shown in FIG. 1, a display device 100 includes a control unit (microcomputer, CPU: Central Processing Unit) 101, a read-only memory (EEPROM) 102, an interface 103, an interface 104, and a CPU power supply unit. 105, a graphic controller 106, a frame memory 107, an X driver 108, a Y driver 109, an LCD (Liquid Crystal Display) power supply unit 110, and a display unit (liquid crystal display, TFT-LCD: Thin Film Transistor Liquid Crystal Display) 111. ing.

  The control unit 101 is, for example, a microcomputer, and executes various programs necessary for realizing the functions of the display device 100 by executing a program prepared in advance. For example, the control unit 101 performs the processing shown in the flowchart of FIG.

  The read-only memory 102 includes the contents of a program executed by the control unit 101, image data of each instrument (image data of a speedometer 41, a fuel gauge 52, a tachometer 51, and a water temperature gauge 42, which will be described later), and a virtual vehicle 61. Image data, etc. are stored.

  The interface 103 inputs a signal (IGN +) indicating the state of the ignition switch on the vehicle side to the control unit 101.

  The interface 104 is used for communication according to a CAN (Controller Area Network) standard between the control unit 101 and various control devices (ECU: Electric Control Unit) on the vehicle side. Specifically, data representing various current vehicle states such as the current vehicle running speed, engine rotation speed, cooling water temperature, fuel remaining amount, and whether or not the clutch is connected, is transmitted from the vehicle side to the interface 104 as almost real-time data. Is input to the control unit 101. The interface 104 can also be used to obtain information from an OBD connector, which is an information output unit in an on-board failure diagnosis system (OBD).

  For example, the interface 104 receives a vehicle speed pulse signal output from a speed sensor mounted on the vehicle side every time the vehicle moves by a predetermined amount, and controls the control unit 101 as travel speed information representing the current travel speed value of the vehicle. Output to.

  Further, the interface 104 receives a pulse signal output from an engine speed sensor that detects the engine speed, and outputs the pulse signal to the control unit 101 as engine speed information. Further, the interface 104 receives information on the remaining amount of fuel detected by the fuel sensor and outputs the information to the control unit 101. Further, the interface 104 receives a signal from a water temperature sensor that detects the temperature of the cooling water in the radiator, and outputs the signal to the control unit 101 as cooling water information.

  The interface 104 is also used to accept an operation input from an operation unit (not shown) provided in the vehicle. In the present embodiment, as will be described later, the interface 104 is configured to be able to accept a cancel input for canceling the failure location display state and transitioning to the normal display state.

  The CPU power supply unit 105 receives the DC power supplied from the positive power supply line (+ B) on the vehicle side and generates a DC voltage (Vcc) necessary for the operation of the control unit 101. In addition, the CPU power supply unit 105 generates a reset signal as necessary, and also performs an operation for suppressing power supply in accordance with a sleep signal output from the control unit 101.

  The display unit 111 is, for example, a liquid crystal display, and has a color two-dimensional display screen in which a large number of minute display cells configured by a liquid crystal device are arranged in the X direction and the Y direction. By individually controlling the display states of a large number of minute display cells for each cell, desired information such as graphics, characters, images, etc. can be displayed on the two-dimensional display screen.

  Thus, the display unit 111 displays the graphic display area 111a of the display device 100 by two-dimensional screen display. Control of the display content of the display unit 111 is executed by the control unit 101 as described later.

  The scanning position in the Y direction on the display screen of the display unit 111 is sequentially switched by the output of the Y driver 109. The Y driver 109 sequentially switches the scanning position in the Y direction in synchronization with the vertical synchronization signal output from the graphic controller 106.

  The X driver 108 sequentially switches the scanning position in the X direction on the display screen of the display unit 111 in synchronization with the horizontal synchronization signal output from the graphic controller 106. In addition, the X driver 108 gives RGB color image data output from the graphic controller 106 to the display cell at the scanning position to control the display contents on the screen.

  The graphic controller 106 displays various graphic elements on the screen of the display unit 111 in accordance with various commands input from the control unit 101. Actually, the control unit 101 or the graphic controller 106 writes display data to the frame memory 107 that holds the display contents for each pixel and draws the graphic. Further, the graphic controller 106 generates a vertical synchronization signal and a horizontal synchronization signal for two-dimensional scanning of the screen of the display unit 111, and is stored at a corresponding address on the frame memory 107 at a timing synchronized with these synchronization signals. Display data is given to the display unit 111.

  The LCD power supply unit 110 receives DC power supplied from the positive power supply line (+ B) on the vehicle side, and generates predetermined DC power required for display on the display unit 111.

<Specific examples of display screen>
2 (A) to 2 (C) (hereinafter, these may be collectively referred to as FIG. 2) and FIGS. 3 (D) to 3 (F) (hereinafter, these will be collectively referred to as FIG. 3). Is a diagram showing a graphic display area 111a displayed on the display unit 111 of the display device 100 and a transition of the display contents, which are shown in FIG. 2 (A), FIG. 2 (B), FIG. The display content changes in the order of 2 (C), FIG. 3 (D), FIG. 3 (E), and FIG. 3 (F). In the graphic display area 111a, generally, in the normal display state (first state) shown in FIG. 2A, the speedometer 41, the fuel gauge 52, the tachometer 51, the water temperature gauge 42, the turn indicator 71. , 72 and the virtual vehicle 61 are respectively displayed. In the failure location display state (second state) shown in FIG. 3F, the failure location is presented using the virtual vehicle 61. Each of these display elements is realized as a graphic display element expressed by a set of a large number of display pixels. Details of the display state transition will be described later.

  The speedometer 41 is a circular display element for presenting the current traveling speed (vehicle speed: km / h) as information relating to the state of the vehicle. In the present embodiment, the speedometer 41 is disposed in the vicinity of the annular speed scale 45 and the center of the speed scale 45 as in a general analog instrument, and indicates a part of the speed scale 45 to indicate the current vehicle speed. And a pointer 46 to be presented. The speedometer 41 is arranged on one end side (the right end side in FIGS. 2 and 3) in the graphic display area 111a.

  The water temperature gauge 42 is a circular display element for presenting the current temperature of the cooling water of the vehicle as information relating to the state of the vehicle. In this embodiment, the water temperature gauge 42 is arranged in the vicinity of the center of the water temperature scale 47 and the annular water temperature scale 47 having a diameter smaller than that of the speed scale 45, similar to a general analog instrument. And a pointer 48 for indicating a current temperature of the cooling water. The water temperature meter 42 is arranged closer to the tachometer 51 than the speedometer 41 so as to have a portion overlapping the speedometer 41 in the graphic display area 111a. Moreover, the water temperature meter 42 is not displayed in the said overlap part, but the speedometer 41 is displayed.

  The tachometer 51 is a circular display element for presenting the current engine speed (x1000 rpm) as information on the state of the vehicle. In the present embodiment, like a general analog instrument, the tachometer 51 is disposed in the vicinity of the center of the rotation speed scale 55 and the rotation speed scale 55 having the same shape as the speed scale 45 and the rotation speed scale 55. A pointer 56 indicating a part of the speed scale 55 and presenting the current rotation speed is included. The tachometer 51 is disposed opposite to the speedometer 41 on the other end side (the left end side in FIGS. 2 and 3) opposite to the one end side where the speedometer 41 is disposed in the graphic display area 111a. Yes.

  The fuel gauge 52 is a circular display element for presenting the current fuel remaining amount of the vehicle as information relating to the state of the vehicle. In this embodiment, the fuel gauge 52 is disposed in the vicinity of the center of the fuel scale 57 and the annular fuel scale 57 having substantially the same shape as the fuel scale 57 in the same manner as a general analog instrument. And a pointer 58 that indicates a part and presents the remaining amount of fuel. The fuel gauge 52 has a smaller display area than the speedometer 41. In addition, the fuel gauge 52 is arranged closer to the speedometer 41 than the tachometer 51 so as to have a portion overlapping the tachometer 51 in the graphic display area 111a. In addition, the fuel gauge 52 is not displayed in the overlapping portion, and the tachometer 51 is displayed.

  The tachometer 51 and the fuel gauge 52 are displayed in the normal display state, and are erased when the failure location is displayed as will be described later. That is, the area in which the tachometer 51 and the fuel gauge 52 are displayed in the normal display state is used as a failure display area for enlarging and displaying the virtual vehicle 61 in the failure location display state.

  The virtual vehicle 61 is a display element that represents the appearance of the vehicle, and is arranged in the center of the screen as a central decoration image in the graphic display area 111a. That is, the virtual vehicle 61 is normally disposed between the speedometer 41 and the water temperature meter 42 disposed on one end side, and the tachometer 51 and the fuel meter 52 disposed on the other end side. The virtual vehicle 61 is three-dimensionally expressed as a three-dimensional image.

  The virtual vehicle 61 that is a three-dimensional image is drawn so as to operate continuously. That is, the virtual vehicle 61 may be displayed so that the virtual vehicle 61 operates continuously by preparing a plurality of vehicle images drawn in two dimensions, and appropriately replacing these images. Alternatively, it may be drawn by storing 3D data of the virtual vehicle 61 and sequentially calculating a display angle or the like.

<Display operation>
A display operation of the display device 100 having the above configuration will be described. FIG. 4 is a flowchart showing a display operation procedure of the display device 100. This operation program is stored in the read-only memory 102 and is executed by the control unit 101.

  First, the driver turns on the ignition switch. The control unit 101 supplied with the DC voltage (Vcc) starts displaying on the graphic display area 111a.

  When starting the display, the control unit 101 performs meter display processing as a normal display state (first state) (S1). In this process, as shown in FIG. 2A, the control unit 101 performs display control so that the display content of the graphic display area 111a functions as a normal meter unit for automobiles. That is, the control unit 101 acquires the latest vehicle speed information via the interface 104 and updates the display content so that the vehicle speed is reflected in the display position and orientation of the hands 46 of the speedometer 41. Also, the latest information on the engine speed is acquired via the interface 104, and the display content is updated so that the engine speed is reflected in the display position and orientation of the pointer 56 of the tachometer 51. The same applies to other display elements such as the fuel gauge 52 and the water temperature gauge 42. Further, the control unit 101 displays the virtual vehicle 61, which is a decorative image, in a three-dimensional (three-dimensional) manner between the tachometer 51 and the fuel gauge 52, and the speedometer 41 and the water temperature gauge 42.

  In step S <b> 2, the control unit 101 waits until failure information is input via the interface 104. When the failure information is received, the control unit 101 moves the display on the tachometer 51 and the fuel meter 52, which overlaps the failure display area, gradually thinning toward the left side in FIG. ) Is erased from the screen (step S3). The reason why the tachometer 51 and the fuel gauge 52 are deleted here is that the speedometer 41 must always be displayed for legal purposes.

  As shown in FIG. 2C, the control unit 101 moves the virtual vehicle 61 to the failure display area in which the display of the tachometer 51 and the fuel gauge 52 is erased, and then shows the arrow a around the C axis. The virtual vehicle 61 is rotated in the direction by a predetermined first angle (step S4). FIG. 2C shows the virtual vehicle 61 after being rotated by the first angle, and the virtual vehicle 61 is displayed in the graphic display area 111a with the front portion of the virtual vehicle 61 facing substantially leftward in the drawing. Yes. In the example of FIGS. 2 and 3, it is assumed that the tire on the left front (passenger seat) side is punctured. That is, in FIG. 2C described above, the virtual vehicle 61 is displayed so that the left front tire, which is the failure location, is temporarily displayed.

  Subsequently, as shown in FIG. 3D, the control unit 101 temporarily stops the operation in a state where the virtual vehicle 61 is rotated around the C axis by a predetermined second angle, and the front door 65a ( The virtual vehicle 61 is displayed so that the movable part and the door part are opened (step S5). In the state rotated by this second angle, the front portion of the virtual vehicle 61 faces substantially rightward in the drawing. Further, as shown in FIG. 3E, the control unit 101 closes the front door 65a, restarts rotation around the C-axis, temporarily stops the operation in a state where it has rotated a predetermined third angle, and this time Is displayed so that the rear door 65b (movable part, door part) is opened.

  Subsequently, the control unit 101 closes the front door 65a and the rear door 65b, and rotates the virtual vehicle 61 around the C axis, that is, rotated in the direction of the arrow b opposite to the arrow a. Is displayed (step S6).

  And the control part 101 discriminate | determines whether it exists in the position where the failure location of the virtual vehicle 61 is displayed based on the failure information received by step S2 (step S7). When the failure part is not at the position where it is displayed, the control unit 101 returns to the process of step S6.

  On the other hand, when reaching the position where the failure part is displayed, the control unit 101 displays the failure part in the virtual vehicle 61 by coloring or increasing the display density as shown in FIG. 3F (step S8). ). Here, an example in which the tire on the left front (passenger seat) side is punctured based on the failure information is assumed, so the tire 65c on the left front wheel of the virtual vehicle 61 is colored or darkly displayed.

  Thereafter, the control unit 101 waits until a cancel input is input via the interface 104. The control unit 101 repeatedly performs the process of S8 until accepting the release input. When accepting the release input, the control unit 101 changes the display state of the display unit 111 to the normal display state through a process reverse to steps S3 to S8. return. And it returns to the process of step S1 and restarts the display process in normal time.

  As described above, the display device 100 according to the present embodiment displays the virtual vehicle 61 by moving the virtual vehicle 61 to the area where the tachometer 51 and the like have been deleted when notifying the driver that a failure has occurred. The vehicle 61 is rotated, and a display for opening and closing the front door 65a and the rear door 65b on the side of the driver's seat is performed during the rotation, and then the failure location is displayed. Thereby, the virtual vehicle 61 can be made conspicuous, and the driver can be notified of the occurrence of the failure with an impact display. Therefore, it is easy for the driver to notice that the display state of the display unit 111 is changed to the failure part display state and information related to the host vehicle is presented.

  Moreover, since it displays so that two door parts which consist of the front door 65a and the rear door 65b may be opened and closed, a driver | operator's attention can be attracted. Furthermore, the driver's attention can also be drawn by displaying the virtual vehicle 61 so as to rotate.

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

  For example, in the above-described embodiment, an example of the display when the tire is punctured is displayed as the display of the failure location. However, the display is not limited to this, and various failures such as battery exhaustion and wiper failure can be displayed.

  Moreover, in the said embodiment, it was set as the structure which shows a failure location as information regarding a vehicle, However As information regarding a vehicle, arbitrary information can be employ | adopted as long as it can be shown using the virtual vehicle 61. FIG. For example, the virtual vehicle 61 can also be used to notify that the vehicle-mounted device has received emergency information, or that gasoline is running out (out of gas).

  Moreover, although the case where the door part of the front door 65a and the rear door 65b was used as a movable part was demonstrated in the said embodiment, if a movable part is a site | part which can operate | move in the virtual vehicle 61, arbitrary locations can be utilized. . For example, other door portions such as a bonnet may be opened and closed, and side mirrors, tires, and the like may be operated.

  In the above embodiment, the virtual vehicle 61 is configured to display the failure location after rotating in both directions of the arrow a direction and the arrow b direction around the C axis in FIGS. 2 and 3. The failure location may be displayed after rotating in only one direction, or may be rotated in a different direction.

  In the above-described embodiment, the virtual vehicle 61 is configured to be displayed three-dimensionally (three-dimensionally). However, the virtual vehicle obtained by planarly viewing the vehicle is displayed and displayed two-dimensionally on the display screen (two-dimensionally). It is also possible to use a configuration expressed as above.

  In the above-described embodiment, the display of the tachometer 51 and the fuel gauge 52 is gradually thinned, and the display is moved to the outside of the screen and erased. However, the display of the tachometer 51 and the fuel gauge 52 is gradually displayed. It may be erased as it is thinned, or it may be erased by moving it without thinning it.

Below, it summarizes about the display apparatus 100 which concerns on this embodiment.
(1) The display device 100 is a display device that includes a display unit 111 that displays various display elements including the virtual vehicle 61 and is used by being mounted on the host vehicle. The display unit 111 presents information related to the host vehicle using the virtual vehicle 61 from the first state (normal display state) in which the display state of the display unit 111 displays the virtual vehicle 61. The virtual vehicle 61 is displayed so that the movable part (65a, 65b) of the virtual vehicle 61 operates in at least one hour during the transition to the state (failure location display state).
(2) In the display device 100, the movable part is a door part (front door 65 a, rear door 65 b) that can open and close the virtual vehicle 61.
(3) In the display device 100, the display unit 111 causes the virtual vehicle 61 to rotate during at least one hour during the transition of the display state of the display unit 111 from the first state to the second state. Then, the virtual vehicle 61 is displayed.
(4) In the display device 100, the display unit 111 presents a failure location of the host vehicle using the virtual vehicle 61 in the second state.

61 Virtual vehicle 65a Front door (movable part)
65b Rear door (movable part)
100 Display Device 101 Control Unit 111 Display Unit

Claims (3)

A display device that includes a display unit that displays various display elements including a virtual vehicle and is used by being mounted on the host vehicle,
The display unit is at least one during the transition of the display state of the display unit from the first state in which the virtual vehicle is displayed to the second state in which information about the host vehicle is presented using the virtual vehicle. In the time zone, display the virtual vehicle so that the movable part of the virtual vehicle operates,
In the second state, the display unit presents a failure location of the host vehicle using the virtual vehicle.
A display device characterized by that. The movable part is a door part capable of opening and closing the virtual vehicle;
The display device according to claim 1. The display unit displays the virtual vehicle so that the virtual vehicle rotates in at least one hour during the transition of the display state of the display unit from the first state to the second state.
The display device according to any one of claims 1 and 2.

Images