JP2014159198A - Vehicular indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular indicator capable of presenting as fresh indication to a driver the fact that a predetermined position on a scale is reached, and helping the driver recognize the fact.SOLUTION: When a travel speed is equal to or higher than a warning speed, a microcomputer changes a belt-like image 46c which is disposed on an indication layer and displayed while overlapping a decorative ring 43. When the travel speed is equal to or higher than the warning speed and falls within a predetermined range from the warning speed (for example, 5 km/h), the belt-like image 46c is changed to a spot image 46d in which a position associated with the warning speed is the darkest as a center and both sides of the position get gradually lighter widely. The color of the spot image 46d is changed to a first color (for example, red). When the travel speed exceeds the predetermined range and largely exceeds the warning speed, the shape of the image is restored to the shape of the belt-like image 46c similar to the one attained before the travel speed reaches the warning speed. The color of the belt-like image 46c is changed to a second color (for example, red or yellow).

Description

  The present invention relates to a vehicle display device mounted on a vehicle.

  2. Description of the Related Art Conventionally, many graphic meters that display automobile meters on a screen using a display device such as a liquid crystal display have appeared as vehicle display devices.

  In general analog meters, a technique for changing the color of the pointer or the color of the dial when the traveling speed exceeds a predetermined speed is known.

  As this type of prior art, Patent Document 1 shows that a pointer afterimage is displayed in a region through which the pointer has passed, and this pointer afterimage is displayed superimposed on a scale or number.

JP 2011-105253 A

  However, the conventional vehicle display device has the following problems. In general automobile meters, alarm functions such as overspeed are realized by a mechanical structure, so there are many restrictions on alarms, and there are difficulties in the degree of alarm recognition to the driver, freshness of display, etc. .

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a vehicle display device capable of presenting and recognizing to a driver that a predetermined position on the scale has been reached. Is to provide.

In order to achieve the above-described object, the vehicle display device according to the present invention is characterized by the following (1) to (4).
(1) a display unit for displaying various information on the display surface;
A control unit for controlling image display of the display unit;
A vehicle display device mounted on a vehicle,
The controller is
A scale having at least one of a scale and a numerical value on the display surface; a pointer indicating a position on the scale based on a signal indicating a state of the vehicle; and a frame body including the scale and the pointer. Display
When the position pointed to by the pointer reaches a predetermined position on the scale, a part of the frame body specified by the pointer is displayed so as to be distinguishable from the other part of the frame body,
about.
(2) The vehicle display device having the configuration of (1) above,
The controller is
An afterimage of the pointer is displayed on the scale on which the pointer has passed so as to overlap at least one of the scale and the numerical value;
about.
(3) A vehicle display device having the configuration of (2) above,
The controller is
Displaying an afterimage on the frame in a region on the frame located outside the region on the scale through which the pointer has passed so as to be aligned with the afterimage of the pointer;
about.
(4) The vehicle display device having the configuration of (3) above,
The controller is
When the position indicated by the pointer reaches a predetermined position on the scale, the afterimage on the frame is changed to an image representing the arrival at the predetermined position,
When the position indicated by the pointer exceeds a predetermined range after reaching a predetermined position on the scale, an afterimage on the frame is displayed again,
Before and after the position indicated by the pointer reaches a predetermined position on the scale and beyond a predetermined range after reaching the predetermined position, an afterimage on the frame is displayed in an identifiable manner;
about.

  According to the vehicle display device having the above-described configurations (1) to (4), when the position indicated by the pointer reaches a predetermined position on the scale, a part of the frame specified by the pointer is replaced with the other part of the frame. Is displayed in an identifiable manner.

  According to the present invention, when the position indicated by the pointer reaches a predetermined position on the scale, a part of the frame body specified by the pointer is displayed so as to be distinguishable from the other part of the frame body. The driver can be presented and recognized as a fresh display that the position has been reached.

  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 shows an example of the hardware configuration of the graphic meter 100 according to the present embodiment. FIG. 2 is a diagram showing a graphic display screen 111 a displayed on the liquid crystal display 111 of the graphic meter 100. FIG. 3A to FIG. 3C are diagrams showing images arranged for each layer and constituting the speedometer 41. FIG. 4 is a flowchart showing a display operation procedure. FIG. 5A to FIG. 5C are diagrams showing changes in the speedometer 41.

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

  FIG. 1 is a diagram illustrating a hardware configuration example of the graphic meter 100 according to the present embodiment. As shown in FIG. 1, the graphic meter 100 includes a microcomputer (CPU: Central Processing Unit) 101, a read-only memory (EEPROM) 102, an interface 103, an interface 104, a CPU power supply unit 105, a graphic A 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 liquid crystal display (TFT-LCD: Thin Film Transistor Liquid Crystal Display) 111 are provided.

  The microcomputer (CPU) 101 executes a program prepared in advance and performs various processes such as image display in order to realize the function of the graphic meter 100. For example, the microcomputer 101 (control unit) performs the process shown in the flowchart of FIG.

  The read-only memory 102 holds the contents of programs executed by the microcomputer 101 and various image data and fixed data prepared in advance.

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

  The interface 104 is used to perform communication according to a CAN (Controller Area Network) standard between the microcomputer 101 and various control devices (ECU: Electric Control Unit) on the vehicle side. Specifically, data representing various current vehicle conditions such as the current vehicle running speed, engine rotation speed, cooling water temperature, fuel amount, and whether or not the clutch is connected is transmitted from the vehicle side to the interface 104 as almost real-time data. To the microcomputer 101.

  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 the microcomputer 101 as travel speed information indicating the current travel speed value of the vehicle. Output to.

  The interface 104 receives a pulse signal output from an engine speed (NE) sensor that detects the engine speed, and outputs the pulse signal as engine speed information to the microcomputer 101. The interface 104 receives information on the fuel amount detected by the fuel sensor and outputs the information to the microcomputer 101. 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 microcomputer 101 as cooling water temperature information.

  The CPU power supply unit 105 inputs DC power supplied from the vehicle-side plus-side power supply line (+ B) and generates a DC voltage (Vcc) necessary for the operation of the microcomputer 101. Further, a reset signal is generated as necessary, and an operation for suppressing power supply is performed in accordance with a sleep signal output from the microcomputer 101.

  The liquid crystal display 111 has a color two-dimensional display screen in which a large number of minute display cells constituted by liquid crystal devices 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.

  The liquid crystal display 111 (display unit) displays a graphic display screen (display surface) 111a of a graphic meter (also simply referred to as a meter) 100 by two-dimensional screen display.

  The scanning position in the Y direction on the display screen of the liquid crystal display 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 liquid crystal display 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 liquid crystal display 111 according to various instructions input from the microcomputer 101. Actually, the microcomputer 101 or the graphic controller 106 writes the display data to the frame memory 107 that holds the display contents for each pixel and draws the graphic. In addition, a vertical synchronizing signal and a horizontal synchronizing signal for two-dimensionally scanning the screen of the liquid crystal display 111 are generated, and display data stored at a corresponding address on the frame memory 107 at a timing synchronized with these synchronizing signals. Is applied to the liquid crystal display 111.

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

  FIG. 2 is a diagram showing a graphic display screen 111 a displayed on the liquid crystal display 111 of the graphic meter 100. The graphic display screen 111a includes a first display area (left area in the figure) 31, a second display area (center area in the figure) 32, and a third display area, which are displayed in different areas. (Right area in the figure) 33.

  In the first display area 31, a speedometer 41 that displays the current traveling speed of the vehicle and a fuel gauge 42 that displays the current fuel amount are displayed so as to partially overlap. The speedometer 41 includes images representing a decorative ring 43 (frame body), a speed scale 45, a pointer 46, and a distance meter 44.

  The pointer 46 indicates the current traveling speed of the vehicle by pointing to the scale position on the speed scale 45, and includes a pointer image 46a and belt-like images 46b and 46c that represent the movement of the pointer image 46a as an afterimage. . The pointer image 46 a is expressed in a band shape that is darker as it is closer to the speed scale 45 and thinner as it is closer to the center of the speedometer 41. Further, the belt-like image 46b (an afterimage of the pointer) is arranged inside the speed scale 45 and is expressed as an afterimage in a region on the speed scale 45 through which the pointer 46 has passed. That is, the belt-like image 46b is expressed in a belt-like shape along the speed scale 45 such that the closer to the position on the speed scale 45 indicated by the pointer image 46a, the darker the color is, and the farther the distance is.

  The band-shaped image 46c (afterimage on the frame) overlaps with the decoration ring 43 so as to be aligned with the band-shaped image 46b in an area on the decoration ring 43 located outside the area on the speed scale 45 through which the pointer 46 has passed. Arranged (superimposed). The belt-like image 46c is expressed in a belt-like shape as an afterimage representing the movement of the pointer image 46a. The change in the strip-like image 46c drawn on the decoration ring 43 will be described later.

  The decoration ring 43 is a frame body that includes the speed scale 45, the hands 46, and the distance meter 44, and includes an annular image 43 a that represents the outer shape of the speedometer 41. The speed scale 45 includes a ring 45a, a scale 45b disposed on the ring 45a, and images representing a numerical value 45c attached to each scale 45b.

  The distance meter 44 is expressed by a numerical image representing an ODO (Odometer) meter 44a that is an integrated odometer and a TRIP (Tripmeter) meter 44b that is an odometer.

  On the other hand, the fuel gauge 42 has a fuel amount scale 47 and a pointer 48, and the pointer 48 indicates a position on the fuel amount scale 47 to indicate the current remaining fuel amount. The pointer 48 is expressed by a pointer image 48a. The pointer image 48a is drawn in a strip shape that is darker as it is closer to the fuel amount scale 47 and thinner as it is closer to the center of the fuel gauge 42.

  The second display area 32 is an area where the decoration image 61 is displayed. This decoration image 61 is an image (vehicle image) imitating a vehicle viewed from the front upper part.

  In the third display area 33, a tachometer 51 that displays the current engine speed and a water temperature meter 52 that displays the current cooling water temperature are displayed so as to partially overlap. The tachometer 51 includes images representing the decorative ring 53, the rotation speed scale 55, and the pointer 56, and the pointer 56 indicates the scale position on the rotation speed scale 55, thereby displaying the current rotation speed of the engine.

  The pointer 56 indicates the current engine rotation speed by pointing to the scale position on the rotation speed scale 55, and includes a pointer image 56a and a belt-like image 56b that represents the movement of the pointer image 56a as an afterimage. The pointer image 56 a is expressed in a band shape that is darker as it is closer to the rotation speed scale 55 and thinner as it is closer to the center of the tachometer 51. Further, the belt-like image 56b is expressed in a belt-like shape along the rotational speed scale 55 so that the closer to the position on the rotational speed scale 55 indicated by the pointer image 56a, the darker the color is, and the farther away the position is.

  The decoration ring 53 is composed of an annular image representing the outer shape of the tachometer 51. The rotation speed scale 55 includes a ring 55a, a scale 55b arranged on the ring, and a numerical value 55c attached to each scale.

  On the other hand, the water temperature meter 52 displays a temperature scale 57 and a pointer 58, and the pointer 58 indicates the position on the temperature scale 57 to indicate the current cooling water temperature. The pointer 58 is expressed by a pointer image 58a. The pointer image 58 a is drawn in a band shape that is darker as it is closer to the temperature scale 57 and thinner as it is closer to the center of the water temperature meter 52.

  In the present embodiment, a plurality of layers (layers) are provided, and each image displayed on the graphic display screen 111a is drawn separately for each layer. Of course, all images may be drawn in one layer.

  FIG. 3A to FIG. 3C are diagrams showing each image that is arranged for each layer and constitutes the speedometer 41. As shown in FIG. 3A, a pointer image 46a and strip images 46b and 46c are arranged in the pointer layer. Further, as shown in FIG. 3B, images representing the ring 45a, the scale 45b, the numerical value 45c, and the decoration ring 43 are arranged in the instrument layer. As shown in FIG. 3C, numerical images representing the ODO meter 44a and the TRIP meter 44b are arranged in the ODO layer.

  The display operation of the graphic meter 100 having the above configuration will be described. FIG. 4 is a flowchart showing a display operation procedure. This operation program is stored in the read-only memory 102 and is executed by the microcomputer (CPU) 101.

  When the ignition switch is turned on by the driver, the microcomputer 101 supplied with the DC voltage (Vcc) starts displaying various information in the first display area 31 to the third display area 33. Here, the display control of the speedometer 41 in the first display area 31 will be mainly described. FIG. 5A to FIG. 5C are diagrams showing changes in the speedometer 41.

  The microcomputer 101 acquires vehicle data, such as travel speed, engine speed, fuel amount, cooling water temperature, etc., input from the interface 104 (step S1). The microcomputer 101 sets the rotation angle of the pointer 46 around the center of the speedometer 41 based on these vehicle data (step S2). Similarly, the microcomputer 101 sets the rotation angles of the hands 48, 56, and 58 with the centers of the fuel gauge 42, the tachometer 51, and the water temperature gauge 52 as rotation axes.

  The microcomputer 101 sets values of the accumulated travel distance (ODO) and the travel distance (TRIP) using the travel distance calculated from the travel speed (step S3).

  The microcomputer 101 changes the positions of the pointer image 46a, the band-shaped image 46b, and the band-shaped image 46c arranged in the pointer layer based on the rotation angle of the pointer 46 set in step S2 (step S4). As shown in FIG. 5A, a pointer image 46a is drawn so as to rotate about the center of the speedometer 41, and a band-like image 46b is formed so as to follow the pointer image 46a as an afterimage of the pointer 46. , 46c. As a result, the traveling speed can be presented to the driver with a fresh display.

  The microcomputer 101 draws an image representing the ring 45a, the scale 45b, and the numerical value 45c as the image of the decoration ring 43 arranged in the instrument layer and the image of the speed scale 45. (Step S5). Finally, the microcomputer 101 draws an image representing the ODO meter 44a and the TRIP meter 44b as an image of the distance meter 44 arranged in the ODO layer (step S6).

  Here, steps S4, S5, and S6 are processed in time series, but are actually processed almost simultaneously, and batch display is performed.

  The microcomputer 101 determines whether or not the traveling speed acquired in step S1 is equal to or higher than a warning speed (for example, 100 km / h) that is a speed that requires a warning (step S7). That is, it is determined whether or not the position indicated by the pointer 46 has reached a predetermined position on the speed scale 45 (a position corresponding to the warning speed).

  If the warning speed is not exceeded, the microcomputer 101 returns to the process of step S1. On the other hand, when the speed is equal to or higher than the warning speed, the microcomputer 101 changes the belt-like image 46c that is arranged on the pointer layer and displayed on the decoration ring 43 (step S8). The pointer image 46a and the strip image 46b are the same as before.

  When the speed is equal to or higher than the warning speed and within a predetermined range (for example, 5 km / h) from the warning speed, the speedometer 41 is displayed as shown in FIG. That is, the belt-like image 46 c is changed to a spot image 46 d that is darkest centering on the position corresponding to the warning speed and gradually spreads thinly toward both sides thereof, and is displayed on the decoration ring 43 so as to overlap. Further, at this time, the color of the spot image 46d is changed to a first color (for example, red) different from the color of the belt-like image 46c. In this way, a part corresponding to the warning speed of the decorative ring 43 specified by the pointer 46 is displayed so as to be distinguishable from other parts, thereby realizing a display that makes it easy for the driver to recognize that the warning speed has been reached. can do.

  On the other hand, when the traveling speed exceeds the predetermined range and greatly exceeds the warning speed, the shape of the image returns to the shape of the belt-like image 46c similar to that before reaching the warning speed, as shown in FIG. However, the color of the belt-like image 46c is changed to a second color (for example, red or yellow) different from the color of the belt-like image 46c. The first color and the second color may be the same or different. Thereby, it is possible to realize a display that allows the driver to easily recognize that the warning speed has been exceeded.

  According to the graphic meter 100 of the present embodiment, when the warning speed is reached, the belt-like image 46c representing the movement of the pointer image 46a displayed on the decoration ring 43 is greatly changed. Therefore, the driver can be presented and recognized as a fresh display that the warning speed has been reached or the warning speed has been exceeded.

  The present invention is not limited to the configuration of the above-described embodiment, and any configuration that can achieve the function of the configuration of the present embodiment is applicable.

  For example, in the above-described embodiment, the case where the belt-like image 46c is changed to the spot image 46d when the warning speed is reached is shown. However, the emphasis display indicating that the warning speed has been reached is not limited to this. It may be changed to an external image or blinking display.

  In the above-described embodiment, the case where the traveling speed reaches the warning speed that requires a warning has been described. However, the embodiment may be applied when the engine speed reaches a warning speed. . As a result, the driver can be presented and recognized as a fresh display that the engine speed has increased to a speed that requires a warning.

  Further, the present invention may be applied when the traveling speed or the engine speed reaches a value suitable for eco driving, and the driver can be presented and recognized as a fresh display that the vehicle is in eco driving.

  INDUSTRIAL APPLICABILITY The present invention is useful because it allows a driver to present and recognize that a predetermined position on a scale has been reached as a fresh display when displaying an image.

31 1st display area 32 2nd display area 33 3rd display area 41 Speedometer 42 Fuel gauge 43 Decoration ring 44 Distance meter 44a ODO meter 44b TRIP meter 45 Speed scale 45a, 55a Ring 45b, 55b Scale 45c, 55c Numerical value 46, 48, 56, 58 Pointer 46a, 48a, 56a, 58a Pointer image 46b, 46c, 56b Band-shaped image 46d Spot image 47 Fuel amount scale 51 Tachometer 52 Water temperature meter 55 Rotational speed scale 57 Temperature scale 61 Vehicle image (decoration) image)
DESCRIPTION OF SYMBOLS 100 Graphic meter 101 Microcomputer 102 Read-only memory 103, 104 Interface 105 CPU power supply part 106 Graphic controller 107 Frame memory 108 X driver 109 Y driver 110 LCD power supply part 111 Liquid crystal display 111a Graphic display screen

Claims (4)

A display unit for displaying various information on the display surface;
A control unit for controlling image display of the display unit;
A vehicle display device mounted on a vehicle,
The controller is
A scale having at least one of a scale and a numerical value on the display surface; a pointer indicating a position on the scale based on a signal indicating a state of the vehicle; and a frame body including the scale and the pointer. Display
When the position pointed to by the pointer reaches a predetermined position on the scale, a part of the frame body specified by the pointer is displayed so as to be distinguishable from the other part of the frame body,
A display device for a vehicle. The controller is
An afterimage of the pointer is displayed on the scale on which the pointer has passed so as to overlap at least one of the scale and the numerical value;
The vehicular display device according to claim 1. The controller is
Displaying an afterimage on the frame in a region on the frame located outside the region on the scale through which the pointer has passed so as to be aligned with the afterimage of the pointer;
The vehicular display device according to claim 2. The controller is
When the position indicated by the pointer reaches a predetermined position on the scale, the afterimage on the frame is changed to an image representing the arrival at the predetermined position,
When the position indicated by the pointer exceeds a predetermined range after reaching a predetermined position on the scale, an afterimage on the frame is displayed again,
Before and after the position indicated by the pointer reaches a predetermined position on the scale and beyond a predetermined range after reaching the predetermined position, an afterimage on the frame is displayed in an identifiable manner;
The vehicular display device according to claim 3.