JP2007240243A - Vehicle-use display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle-use display device capable of almost simultaneously displaying two or more information contents on a liquid crystal display section by using respective colors different from another while preventing its cost from being pushed up. <P>SOLUTION: The vehicle-use display device includes a liquid crystal display unit and a CPU. The liquid crystal display unit includes a transmissive liquid crystal display panel 12 for displaying vehicle-use information and a back light which is disposed on the backside thereof and emits homogeneous light at its lighting timing, and brings the back light to illuminate the liquid crystal display panel 12 in a transmissive state, thereby bringing the liquid crystal display panel 12 to display the vehicle-use information by using the color of light emitted by the back light. The CPU includes a display control means for bringing the liquid crystal display panel to display the vehicle-use information and a light emission control means for turning the back light on. The display control means displays two or more vehicle-information contents alternately on mutually different positions of the liquid crystal display panel 12. The light emission control means turns the back light on so as to emit light having different color at respective timings when the vehicle-use information contents are displayed on the liquid crystal display panel by the display control means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle display device.

Conventionally, a display device for vehicles for displaying information for vehicles, such as information about vehicle equipment, is known (refer to patent documents 1). This vehicle display device includes a transmissive liquid crystal display panel that displays vehicle information, and a backlight provided on the back side of the liquid crystal display panel. The liquid crystal display panel is transmitted and illuminated by the backlight, so that the vehicle information is displayed on the liquid crystal display panel in the light emission color of the backlight.
JP 2003-252079 A

  By the way, in the said vehicle display apparatus, several information for vehicles can also be displayed simultaneously.

  Here, in general, the optimal display colors of the vehicle graphic information and the vehicle character information are different from the viewpoint of visibility. Moreover, the importance may differ between each vehicle information. From the above, when displaying a plurality of vehicle information, there is a demand for displaying them together in different colors.

  However, the backlight cannot emit a plurality of colors at a time. That is, the backlight can emit only monochromatic light at a time. For this reason, as shown in FIG. 15, the vehicle display device can simultaneously display a plurality of pieces of vehicle information only in the same color.

  Here, in order to display a plurality of vehicle information together in different colors, for example, a backlight is provided on the back side of the position where each vehicle information is displayed on the liquid crystal display panel, or the liquid crystal display panel is provided with a so-called TFT ( A thin film transistor) display.

  However, in the former, a plurality of backlights must be prepared, and in the latter, the display itself is very expensive, and in any case, the cost increases.

  The present invention has been made in view of such points, and an object of the present invention is to display a plurality of pieces of vehicle information on a liquid crystal display unit in substantially different colors at the same time while suppressing an increase in cost. The object is to provide a display device for a vehicle.

  A first invention includes a transmissive liquid crystal display unit that displays vehicle information including one or more elements, and a light source unit that is provided on the back side of the liquid crystal display unit and emits a single color when turned on. A vehicle display device that displays the vehicle information on the liquid crystal display unit in the light emission color of the light source unit by transmitting and illuminating the liquid crystal display unit with the light source unit, wherein the light source unit emits a plurality of colors. A display control unit configured to alternately display a plurality of the vehicle information at different positions on the liquid crystal display unit, and each time the vehicle control information is displayed on the liquid crystal display unit by the display control unit. It further comprises light emission control means for lighting the light source unit in different colors.

  Thus, the display control means alternately displays a plurality of vehicle information at different positions on the liquid crystal display section, and the light emission control means changes each time the vehicle information is displayed on the liquid crystal display section by the display control means. Since the light source unit is turned on by color, by adjusting the display time of each vehicle information, a plurality of vehicle information can be apparently displayed on the liquid crystal display unit in different colors substantially simultaneously. Therefore, a plurality of pieces of vehicle information can be displayed on the liquid crystal display unit substantially simultaneously with different colors without using a plurality of light source units or TFT displays, that is, while suppressing an increase in cost.

  In addition, since a plurality of vehicle information is alternately displayed on the liquid crystal display unit, it is possible to alert the occupant that the vehicle information is displayed.

  According to a second aspect, in the first aspect, the light source unit includes a plurality of light emitting elements that emit light in different colors.

  Thereby, the light emission color of a light source unit can be easily switched by controlling each light emitting element.

  According to a third aspect, in the first or second aspect, the liquid crystal display unit is a dot matrix type liquid crystal display panel.

  Thereby, the shape and position of the vehicle information displayed on the liquid crystal display unit can be easily controlled.

  According to a fourth invention, in any one of the first to third inventions, the background color of the liquid crystal display unit is a black color, and the display control means is 1 as the plurality of vehicle information. Alternatively, a plurality of vehicle graphic information and one or more vehicle character information are alternately displayed at different positions on the liquid crystal display unit, and the light emission control means is configured to display the vehicle characters by the display control means. When the information is displayed on the liquid crystal display unit, the light source unit is configured to be lit in a white color.

  Accordingly, when the light emission control means causes the display control means to display the vehicle character information on the liquid crystal display section, the light source unit is lit in the white color, so that the background color of the black liquid crystal display area is reduced. The vehicle character information can be displayed in white color. Therefore, the visibility of the vehicle character information can be improved.

  The black color includes not only black but also a color similar to black (for example, gray), and the white color includes white as well as a color similar to white (for example, Bean bulb color).

  According to a fifth aspect of the invention, in any one of the first to fourth aspects of the invention, when the vehicle is in a predetermined abnormality, the display control means displays a plurality of the vehicle information corresponding to the abnormality in the liquid crystal display. It is configured to be displayed alternately at different positions of the part.

  Thereby, a plurality of vehicle information corresponding to a predetermined abnormality of the vehicle can be displayed substantially simultaneously with different colors.

  According to a sixth aspect of the present invention, in any one of the first to third aspects, the display control means displays each element of the vehicle information including a plurality of elements when the vehicle is normal. Are simultaneously displayed at different positions of the vehicle, and when a predetermined abnormality occurs in the vehicle, the liquid crystal display includes vehicle abnormality information including elements corresponding to the abnormality among the plurality of elements and vehicle normal information including other elements. The light emission control means is configured to alternately display at different positions on the display unit, and the light emission control unit lights the light source unit in a certain color during the normal time, while the display control means performs the above-described operation when the abnormality occurs. Each time the vehicle abnormality information and the vehicle normal information are displayed on the liquid crystal display unit, the light source unit is turned on in a different color.

  Thus, when the vehicle is normal, each element of the vehicle information including a plurality of elements is simultaneously displayed at different positions on the liquid crystal display unit by the display control unit, and the light source unit is fixed in a certain color by the light emission control unit. Therefore, when the vehicle is normal, each element of the vehicle information including a plurality of elements can be simultaneously displayed in the same color.

  On the other hand, at the time of a predetermined abnormality of the vehicle, the display control means displays the vehicle abnormality information including the elements corresponding to the abnormality among the plurality of elements and the vehicle normal information including the other elements at different positions on the liquid crystal display unit. The light source unit is lit in a different color each time the abnormal light information for the vehicle and the normal information for the vehicle are displayed on the liquid crystal display by the light emission control means by the light emission control means. The vehicle abnormality information and the vehicle normal information can be displayed in different colors. Therefore, it is possible to reliably notify the passenger that a predetermined abnormality has occurred in the vehicle.

  In a seventh aspect based on the sixth aspect, each element of the vehicle information including the plurality of elements is a graphic element, and the vehicle abnormality information includes the graphic element corresponding to the abnormality, A character element corresponding to the abnormality is also included.

  Thereby, in addition to the graphic element corresponding to the abnormality, the vehicle abnormality information includes a character element corresponding to the abnormality, so that it is possible to more reliably notify the occupant that a predetermined abnormality has occurred in the vehicle. .

  According to an eighth invention, in any one of the first to fourth inventions, each of the vehicle information is vehicle navigation information.

  As a result, a plurality of vehicle navigation information can be displayed on the liquid crystal display unit substantially simultaneously with different colors.

  According to the present invention, a plurality of vehicle information is alternately displayed at different positions on the liquid crystal display unit, and each time the vehicle information is displayed on the liquid crystal display unit, the light source unit is lit in a different color. By adjusting the display time of the vehicle information, a plurality of vehicle information can be apparently displayed on the liquid crystal display unit with different colors substantially simultaneously. Therefore, it is possible to display a plurality of pieces of vehicle information on the liquid crystal display unit with mutually different colors substantially simultaneously while suppressing an increase in cost.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic front view of an instrument panel on which a liquid crystal display unit according to an embodiment of the present invention is mounted, FIG. 2 is an exploded perspective view of the liquid crystal display unit, and FIG. 3 is a vehicle display device. 4 is a diagram showing vehicle information displayed on the liquid crystal display panel when the seat belt is not attached, and FIG. 5 is a liquid crystal display when the parking brake is not released. FIG. 6 is a diagram showing vehicle information displayed on the panel, FIG. 6 is a diagram showing vehicle information displayed on the liquid crystal display panel when the door of the driver's seat is in a half-door state, and FIG. FIG. 8 is a diagram showing vehicle information displayed on the liquid crystal display panel when the remaining fuel amount in the tank is smaller than a predetermined amount. FIG. 8 shows the liquid crystal when the engine water temperature is higher than the predetermined temperature. Vehicle displayed on the display panel Is a diagram illustrating information.

  As shown in FIGS. 1 to 3, the vehicle display device 1 includes a liquid crystal display unit 10 and a CPU 20, and is activated when an ignition switch is turned on.

  As shown in FIG. 1, the liquid crystal display unit 10 is disposed in the center of the instrument panel 2 in the vehicle width direction. As shown in FIG. 2, the liquid crystal display unit 10 includes a glass plate 11 and a transmissive liquid crystal display panel 12 that is disposed on the back side of the glass plate 11 and displays vehicle information including one or more elements. Liquid crystal display unit) and a single backlight unit 13 (corresponding to a light source unit) disposed on the back side of the liquid crystal display panel 12 and emitting light in a single color when lit. Is transmitted and illuminated by the backlight unit 13, so that the vehicle information is displayed on the liquid crystal display panel 12 in the light emission color of the backlight unit 13.

  The liquid crystal display panel 12 is of a dot matrix type composed of a plurality of dots (pixels), and displays desired vehicle information by controlling the voltage applied to each dot. Here, in the pixel corresponding to the vehicle information, light from the backlight unit 13 is transmitted, and the color of the vehicle information becomes the emission color of the backlight unit 13 as described above. The light from the backlight unit 13 is blocked, and the background color of the vehicle information on the liquid crystal display panel 12 becomes black.

  The backlight unit 13 includes a substrate 13a and red, green, and white light emitting diodes 13b to 13d (corresponding to light emitting elements) that are arranged on the front side of the substrate 13a and emit light in red, green, and white, respectively. Thus, one of the light emitting diodes 13b to 13d emits light, or a plurality of light emitting diodes emit light at the same time, so that a plurality of colors can be emitted. For example, when each light emitting diode emits light, the emitted color is emitted, and when the red and green light emitting diodes 13b and 13c emit light together, orange light is emitted.

  As shown in FIG. 3, the CPU 21 includes a liquid crystal display panel 12 and a backlight unit 13, a navigation device 22, a seat belt state detection sensor 23 that detects whether the seat belt is worn or not, and a door open / closed state. A door state detection sensor 24 that detects the vehicle, a power plant control module (hereinafter referred to as PCM) 25 that controls the drive system of the vehicle, a water temperature detection sensor 26 that detects the water temperature of the engine, and a remaining fuel amount in the fuel tank. A remaining fuel amount detection sensor 27 to detect, a fuel consumption detection sensor 28 to detect fuel consumption, an outside air temperature detection sensor 29 to detect outside air temperature, and a timepiece 30 are connected. An output signal from the navigation device 22, an output signal from each of the sensors 23, 24, 26 to 29, an output signal from the PCM 25, and an output signal from the timepiece 30 are input to the CPU 21.

  The CPU 21 controls the liquid crystal display panel 12 and the backlight unit 13 based on signals input from the navigation device 22, the sensors 23, 24, 26 to 29, the PCM 25, and the clock 30. The CPU 21 has display control means 21 a for displaying vehicle information on the liquid crystal display panel 12 and light emission control means 21 b for lighting the backlight unit 13.

  As shown in FIGS. 4 to 8, the display control means 21 a does not display the vehicle information on the liquid crystal display panel 12 when the vehicle is normal, while corresponding to the abnormality when the vehicle is in a predetermined abnormality. The vehicle graphic information composed of one graphic element and the vehicle character information composed of one character element corresponding to the abnormality are alternately displayed at different positions on the liquid crystal display panel 12 every 1 to 2 seconds. Yes. Here, the graphic element is an element mainly composed of a graphic, and the character element is an element composed only of a character.

  The light emission control means 21b lights the backlight unit 13 in a different color each time the display control means 21a alternately displays the vehicle information at different positions on the liquid crystal display panel 12. Specifically, when the display control means 21a displays the vehicle graphic information on the liquid crystal display panel 12, the light emission control means 21b lights the backlight unit 13 in a color other than white while the display control means 21a When the vehicle character information is displayed on the liquid crystal display panel 12, the backlight unit 13 is lit in white.

  From the above, a plurality of pieces of vehicle information are displayed almost simultaneously on the liquid crystal display panel 12 in different colors.

-Operation of display device for vehicle-
Hereinafter, the operation of the vehicle display device 1 will be described.

  As shown in FIG. 4, when the seat belt is not attached (corresponding to a predetermined abnormality of the vehicle), the vehicle graphic information corresponding to the seat belt not attached (see FIG. 4A), In addition, the vehicle character information (refer to FIG. 4B) corresponding to the state where the seat belt is not attached is displayed in place of the liquid crystal display panel 12 at different positions. When displaying the vehicle graphic information corresponding to the seat belt not worn state, the light emission color of the backlight unit 13 is changed to red, while the vehicle character information corresponding to the seat belt unmounted state is displayed. When displaying, the emission color of the backlight unit 13 is set to white. That is, every time the vehicle information is displayed, the light emission color of the backlight unit 13 is switched. From the above, the vehicle graphic information and the vehicle character information corresponding to the unmounted state of the seat belt are displayed substantially simultaneously in red and white, respectively.

  Further, as shown in FIG. 5, when the parking brake is not released (corresponding to a predetermined abnormality of the vehicle), the vehicle graphic information corresponding to the parking brake not released (see FIG. 5A). ), And the character information for the vehicle (see FIG. 5B) corresponding to the unreleased state of the parking brake is displayed instead of different positions on the liquid crystal display panel 12. . When displaying the vehicle graphic information corresponding to the parking brake unreleased state, the light emission color of the backlight unit 13 is changed to red, while the vehicle character information corresponding to the parking brake unreleased state is displayed. When displaying, the emission color of the backlight unit 13 is set to white. From the above, the vehicle graphic information and the vehicle character information corresponding to the unreleased state of the parking brake are displayed substantially simultaneously in red and white, respectively.

  As shown in FIG. 6, when the driver's seat door is in a half-door state (corresponding to a predetermined abnormality of the vehicle), the vehicle graphic information (FIG. 6 (a)) corresponding to the driver's seat half-door state is displayed. And the character information for the vehicle (see FIG. 6B) corresponding to the driver's seat half door state is displayed in place of different positions on the liquid crystal display panel 12. . And when displaying the graphic information for vehicles corresponding to the driver's seat half door state, while making the light emission color of the backlight unit 13 red, the vehicle character information corresponding to the driver's seat half door state is displayed. At that time, the emission color of the backlight unit 13 is set to white. From the above, the vehicle graphic information and the vehicle character information corresponding to the driver's half door state are displayed substantially simultaneously in red and white, respectively.

  Further, as shown in FIG. 7, when the remaining fuel amount in the fuel tank becomes smaller than a predetermined amount (corresponding to a predetermined abnormality of the vehicle), the vehicle graphic information corresponding to the fuel-out state (FIG. 7). (See (a)), and the character information for the vehicle (see FIG. 7B) corresponding to the out-of-fuel state is displayed in place of the liquid crystal display panel 12 at different positions. When displaying vehicle graphic information corresponding to the out-of-fuel state, the light emission color of the backlight unit 13 is set to orange, while when displaying vehicle character information corresponding to the out-of-fuel state, The light emission color of the light unit 13 is changed to white. From the above, the vehicle graphic information and the vehicle character information corresponding to the out-of-fuel state are displayed substantially simultaneously in orange and white, respectively. In the present embodiment, the vehicle graphic information displayed in orange has a lower degree of abnormality than the vehicle graphic information displayed in red (hereinafter the same).

  Further, as shown in FIG. 8, when the engine water temperature becomes higher than a predetermined temperature (corresponding to a predetermined abnormality of the vehicle), the vehicle graphic information corresponding to the engine water temperature abnormality state (FIG. 8 (a)). And the character information for the vehicle (refer to FIG. 8B) corresponding to the abnormal engine water temperature state is displayed in different positions on the liquid crystal display panel 12. When displaying vehicle graphic information corresponding to the engine water temperature abnormal state, the emission color of the backlight unit 13 is set to red, while displaying vehicle character information corresponding to the engine water temperature abnormal state. The emission color of the backlight unit 13 is set to white. From the above, the vehicle graphic information and the vehicle character information corresponding to the engine water temperature abnormal state are displayed substantially simultaneously in red and white, respectively.

-Effect-
As described above, according to the present embodiment, two pieces of vehicle information are alternately displayed at different positions on the liquid crystal display panel 12 by the display control unit 21a, and each vehicle is displayed by the display control unit 21a by the light emission control unit 21b. Each time information is displayed on the liquid crystal display panel 12, the backlight unit 13 is turned on with a different color. Therefore, by adjusting the display time of the information for each vehicle, the two pieces of vehicle information are apparently displayed on the liquid crystal display panel 12. Can be displayed almost simultaneously in different colors. Therefore, the two pieces of vehicle information can be displayed on the liquid crystal display panel 12 in substantially different colors substantially simultaneously without using a plurality of backlight units 13 and TFT displays, that is, while suppressing an increase in cost.

  In addition, since the two vehicle information is alternately displayed on the liquid crystal display panel 12, it is possible to alert the passenger that the vehicle information is displayed.

  Moreover, the light emission color of the backlight unit 13 can be easily switched by controlling each light emitting diode.

  Further, since the liquid crystal display panel 12 is of a dot matrix type, the shape and position of the vehicle information displayed on the liquid crystal display panel 12 can be easily controlled.

  When the display control means 21a displays the vehicle character information on the liquid crystal display panel 12 by the light emission control means 21b, the backlight unit 13 is lit in white color, so that the black color liquid crystal display panel 12 The vehicle character information can be displayed in a white color with respect to the background color. Therefore, the visibility of the vehicle character information can be improved.

  Also, two pieces of vehicle information corresponding to a predetermined abnormality of the vehicle can be displayed substantially simultaneously with different colors.

  In this embodiment, one vehicle graphic information and one vehicle character information are alternately displayed at different positions on the liquid crystal display panel 12, but a plurality of vehicle graphic information and one or a plurality of vehicles are displayed. The character information, or one or a plurality of vehicle graphic information and a plurality of vehicle character information may be alternately displayed at different positions on the liquid crystal display panel 12.

  In this embodiment, the background color of the liquid crystal display panel 12 is black, but it may be a black color other than black.

  In the present embodiment, when displaying the vehicle character information, the backlight unit 13 is lit in white, but may be lit in a white color other than white.

(Embodiment 2)
FIG. 9 is a diagram illustrating vehicle information displayed on the liquid crystal display panel when the vehicle is normal, and FIG. 10 is a vehicle information displayed on the liquid crystal display panel when the boost pressure is greater than a predetermined value. FIG. 11 is a diagram showing vehicle information displayed on the liquid crystal display panel when the remaining fuel amount in the fuel tank becomes smaller than a predetermined amount. FIG. 12 shows the engine water temperature. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when becomes higher than predetermined temperature.

  In the present embodiment, vehicle information is displayed on the liquid crystal display panel 12 when the vehicle is normal, in addition to when the vehicle is in a specified abnormality. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 9, when the vehicle is normal, the display control means 21a displays each graphic element of the vehicle information composed of three graphic elements at different positions on the liquid crystal display panel 12 at the same time. Yes. These graphic elements are composed of a graphic element indicating a boost gauge for displaying the boost pressure of the turbo, a graphic element indicating a fuel gauge, and a graphic element indicating a water temperature gauge. The boost pressure is read from the PCM 25.

  On the other hand, as shown in FIGS. 10 to 12, the display control means 21 a, when a predetermined abnormality occurs in the vehicle, includes vehicle abnormality information including graphic elements corresponding to the abnormality among the above three graphic elements, and other information. The normal vehicle information including graphic elements is alternately displayed at different positions on the liquid crystal display panel 12 for 1 to 2 seconds. The vehicle abnormality information includes a graphic element corresponding to the abnormality and a character element corresponding to the abnormality. Each graphic element is displayed at the same position on the liquid crystal display panel 12 when the vehicle is normal and when the vehicle is in a predetermined abnormality.

  When the vehicle is normal, the light emission control unit 21b lights the backlight unit 13 in white. When the vehicle is abnormal, the display control unit 21a transmits the vehicle abnormality information and the vehicle normal information to each other on the liquid crystal display panel 12. The backlight unit 13 is lit in a different color each time it is alternately displayed at different positions.

  As described above, the vehicle abnormality information and the vehicle normal information are displayed on the liquid crystal display panel 12 in substantially different colors substantially simultaneously.

-Operation of display device for vehicle-
Hereinafter, the operation of the vehicle display device 1 will be described.

  As shown in FIG. 9, when the vehicle is normal, vehicle information including graphic elements indicating a boost gauge, graphic elements indicating a fuel gauge, and graphic elements indicating a water temperature gauge are put together at different positions on the liquid crystal display panel 12. To display. And when displaying the information for vehicles, the luminescent color of the backlight unit 13 is made white. From the above, the vehicle information is displayed in white.

  Further, as shown in FIG. 10, when the boost pressure is greater than a predetermined value (corresponding to a predetermined abnormality of the vehicle), the vehicle normal consisting of a graphic element indicating a fuel gauge and a graphic element indicating a water temperature gauge Information (see FIG. 10 (a)) and a graphic element indicating a boost meter corresponding to the boost pressure abnormal state and a character element "boost pressure abnormal" corresponding to the boost pressure abnormal state Abnormal information (see FIG. 10B) is displayed in different positions on the liquid crystal display panel 12. When displaying normal information for the vehicle, the emission color of the backlight unit 13 is set to white, while when displaying abnormal information for the vehicle, the emission color of the backlight unit 13 is set to red. From the above, the vehicle normal information and the vehicle abnormality information are displayed substantially simultaneously in white and red, respectively.

  Further, as shown in FIG. 11, when the amount of remaining fuel in the fuel tank becomes smaller than a predetermined amount (corresponding to a predetermined abnormality of the vehicle), a graphic element indicating a boost meter and a graphic element indicating a water temperature meter Vehicle normal information (see FIG. 11 (a)), and a graphic element indicating a fuel gauge corresponding to the out-of-fuel state and a character element “please refuel” corresponding to the out-of-fuel state; The vehicle abnormality information (see FIG. 11 (b)) is displayed in place of the liquid crystal display panel 12 at different positions. When displaying the normal information for the vehicle, the emission color of the backlight unit 13 is set to white, while when displaying the abnormal information for the vehicle, the emission color of the backlight unit 13 is set to orange. From the above, the normal information for the vehicle and the abnormal information for the vehicle are displayed substantially simultaneously in white and orange, respectively.

  Also, as shown in FIG. 12, when the engine water temperature is higher than a predetermined temperature (corresponding to a predetermined abnormality of the vehicle), the vehicle is composed of a graphic element indicating a boost meter and a graphic element indicating a fuel meter. Vehicle comprising normal information (see FIG. 12 (a)), a graphic element indicating a water temperature meter corresponding to the abnormal engine water temperature state, and a character element "abnormal engine water temperature" corresponding to the abnormal engine water temperature state The abnormal information for use (see FIG. 12B) is displayed at different positions on the liquid crystal display panel 12. When the normal information for the vehicle is displayed, the emission color of the backlight unit 13 is set to white, while when the abnormal information for the vehicle is displayed, the emission color of the backlight unit 13 is set to red. From the above, the vehicle normal information and the vehicle abnormality information are displayed substantially simultaneously in white and red, respectively.

-Effect-
As described above, according to the present embodiment, when the vehicle is normal, the display control unit 21a simultaneously displays each element of the vehicle information including the three elements at different positions on the liquid crystal display panel 12, thereby controlling the light emission. Since the backlight unit 13 is lit in a certain color by the means 21b, when the vehicle is normal, each element of the vehicle information including the three elements can be simultaneously displayed in the same color.

  On the other hand, when the vehicle is in a predetermined abnormality, the liquid crystal display panel 12 displays the vehicle abnormality information including the elements corresponding to the abnormality among the three elements and the vehicle normal information including the other elements among the three elements. Since the backlight unit 13 is lit in a different color each time the abnormal light information for vehicles and the normal information for vehicles are displayed on the liquid crystal display panel 12 by the light emission control means 21b by the light emission control means 21b. When a predetermined abnormality occurs in the vehicle, the vehicle abnormality information and the vehicle normal information can be displayed in different colors. Therefore, it is possible to reliably notify the passenger that a predetermined abnormality has occurred in the vehicle.

  Further, since the vehicle abnormality information includes a character element corresponding to the abnormality in addition to the graphic element corresponding to the abnormality, the vehicle abnormality information can be more reliably notified to the occupant that the predetermined abnormality has occurred.

  In the present embodiment, the vehicle information displayed when the vehicle is normal is composed of three graphic elements, but may be composed of two or four or more graphic elements.

  In the present embodiment, the vehicle information displayed when the vehicle is normal is composed of three graphic elements, but may be composed of elements other than graphic elements, for example, character elements.

  Further, in the present embodiment, the vehicle abnormality information is composed of a graphic element corresponding to the abnormality and a character element corresponding to the abnormality, but the vehicle abnormality information is a graphic element corresponding to the abnormality. It may be composed of only the graphic elements and character elements corresponding to the abnormality and other elements.

  Further, in the present embodiment, the vehicle normal information is configured by only graphic elements other than the graphic elements corresponding to the abnormality, but may be configured by these graphic elements and other elements.

  In the present embodiment, the backlight unit 13 is lit in white when the vehicle is normal, but may be lit in a color other than white as long as the color is constant.

(Embodiment 3)
FIG. 13 is a diagram showing vehicle navigation information displayed on the liquid crystal display panel.

  In the present embodiment, vehicle navigation information is displayed on the liquid crystal display panel 12. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 13, the display control means 21a includes first vehicle navigation information (see FIG. 13 (a)) consisting of one graphic element, and second vehicle navigation information (see FIG. 13). 13 (b)) are alternately displayed at different positions on the liquid crystal display panel 12 for 1 to 2 seconds. As shown in FIG. 13 (a), the graphic element of the first vehicle navigation information is an arrow indicating the direction of turning at the next right / left turn point, and as shown in FIG. 13 (b), the second vehicle navigation is performed. The character element of the information is composed of, in order from the top, the estimated arrival time at the destination, the distance to the destination, the distance to the next right / left turn point, and the current travel location.

  When the display control unit 21a displays the first vehicle navigation information on the liquid crystal display panel 12, the light emission control unit 21b lights the backlight unit 13 in green, while the display control unit 21a displays the second vehicle navigation information. Is displayed on the liquid crystal display panel 12, the backlight unit 13 is lit in white.

  From the above, the first and second vehicle navigation information is displayed substantially simultaneously in green and white, respectively.

  In the present embodiment, the first vehicle navigation information is composed of one graphic element, and the second vehicle navigation information is composed of four character elements. However, the first and second vehicle navigation information is You may comprise by elements other than this.

  In this embodiment, the background color of the liquid crystal display panel 12 is black, but it may be a black color other than black.

  In the present embodiment, when displaying the second vehicle navigation information, the backlight unit 13 is lit in white, but may be lit in a white color other than white.

(Embodiment 4)
FIG. 14 is a diagram showing first and second vehicle information displayed on the liquid crystal display panel.

  In the present embodiment, two pieces of vehicle information having different properties are displayed on the liquid crystal display panel 12. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 14, the display control means 21a includes information for the first vehicle made up of two character elements and one graphic element (see FIG. 14A), and for the second vehicle made up of two character elements. Information (see FIG. 14B) is alternately displayed at different positions on the liquid crystal display panel 12 for 1 to 2 seconds. As shown in FIG. 14 (a), the character elements of the first vehicle information are composed of the instantaneous fuel consumption and the average fuel consumption, and the graphic element shows the fuel gauge, as shown in FIG. 14 (b). The character element of the second vehicle information includes the current time and the current outside temperature.

  When the display control means 21a displays the first vehicle information on the liquid crystal display panel 12, the light emission control means 21b turns on the backlight unit 13 in white while the display control means 21a displays the second vehicle information on the liquid crystal. When displaying on the display panel 12, the backlight unit 13 is lit in orange.

  From the above, the first and second vehicle information are displayed substantially simultaneously in white and orange, respectively.

(Other embodiments)
In the above embodiments, two pieces of vehicle information are alternately displayed at different positions on the liquid crystal display panel 12, but three or more pieces of vehicle information are alternately displayed at different positions on the liquid crystal display panel 12. Also good.

  In each of the above embodiments, the backlight unit 13 is composed of red, green, and white light emitting diodes 13b to 13d. However, the backlight unit 13 is not limited as long as it can emit a plurality of colors. Also good. For example, the backlight unit 13 having a color filter may be used.

  Further, in each of the above embodiments, the light emitting element is composed of the red, green, and white light emitting diodes 13b to 13d. However, any light emitting element may be used as long as it emits light with different colors.

  Moreover, in each said embodiment, although the light emitting element is comprised by the three light emitting diodes 13b-13d, you may comprise by 2 or 4 or more light emitting diodes.

  Moreover, in each said embodiment, although the background color of the liquid crystal display panel 12 is set to black, unless the vehicle information becomes difficult to see, you may make it a color other than black.

  In each of the above embodiments, the liquid crystal display unit is configured by the dot matrix type liquid crystal display panel 12. However, the present invention is not limited to this. For example, the vehicle character information display part of the liquid crystal display unit is a dot matrix type liquid crystal. The display panel 12 may be used, and vehicle graphic information may be baked in advance on other parts.

  In the above embodiments, two pieces of vehicle information are alternately displayed at different positions on the liquid crystal display panel 12 for 1 to 2 seconds, but this display time may be an arbitrary value. As the display time becomes shorter, it seems that two pieces of vehicle information are displayed on the liquid crystal display panel 12 at the same time.

  In each of the above embodiments, for example, when one vehicle information is displayed on the liquid crystal display panel 12, the backlight unit 13 is lit in red, and the other vehicle information is displayed on the liquid crystal display panel 12. The backlight unit 13 is lit in white, but as long as the backlight unit 13 is lit in a different color each time two pieces of vehicle information are displayed on the liquid crystal display panel 12, the color is any. Also good.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the vehicular display device according to the present invention can be applied to a use in which a plurality of vehicular information is displayed substantially simultaneously in different colors on the liquid crystal display unit while suppressing an increase in cost.

It is a schematic front view of the instrument panel in which the liquid crystal display unit which concerns on embodiment of this invention is mounted. It is a disassembled perspective view of a liquid crystal display unit. It is a system diagram of a display device for vehicles. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when a seatbelt is a non-wearing state. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when a parking brake is an unreleased state. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when the door of a driver's seat is a half door state. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel, when the amount of remaining fuel in a fuel tank becomes smaller than predetermined amount. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when the water temperature of an engine becomes higher than predetermined temperature. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel at the time of normal of a vehicle. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when boost pressure becomes larger than a predetermined value. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel, when the amount of remaining fuel in a fuel tank becomes smaller than predetermined amount. It is a figure which shows the information for vehicles displayed on a liquid crystal display panel when the water temperature of an engine becomes higher than predetermined temperature. It is a figure which shows the navigation information for vehicles displayed on a liquid crystal display panel. It is a figure which shows the information for 1st and 2nd vehicles displayed on a liquid crystal display panel. It is a figure which shows the conventional 2 information for vehicles displayed on the liquid crystal display panel simultaneously.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 12 for vehicles Liquid crystal display panel (liquid crystal display part)
13 Backlight unit (light source unit)
13b Red light emitting diode (light emitting element)
13c Green light emitting diode (light emitting element)
13d White light emitting diode (light emitting element)
21 CPU
21a Display control means 21b Light emission control means

Claims (8)

A transmissive liquid crystal display unit that displays vehicle information including one or more elements, and a light source unit that is provided on the back side of the liquid crystal display unit and emits a single color when lit, and the liquid crystal display unit includes the light source A vehicle display device that displays the vehicle information on the liquid crystal display unit in a light emission color of the light source unit by transmitting and illuminating with a unit,
The light source unit is configured to emit a plurality of colors,
Display control means for alternately displaying a plurality of the vehicle information at different positions of the liquid crystal display unit;
The vehicle display device further comprising: light emission control means for lighting the light source unit in a different color each time the vehicle information is displayed on the liquid crystal display by the display control means. The vehicle display device according to claim 1,
The display device for a vehicle, wherein the light source unit includes a plurality of light emitting elements that emit light in different colors. The vehicle display device according to claim 1 or 2,
The vehicle display device, wherein the liquid crystal display unit is a dot matrix type liquid crystal display panel. In the vehicle display device according to any one of claims 1 to 3,
The background color of the liquid crystal display is a black color,
The display control means is configured to alternately display one or more vehicle graphic information and one or more vehicle character information as the plurality of vehicle information at different positions on the liquid crystal display unit,
The light emission control means is configured to light up the light source unit in a white color when the vehicle character information is displayed on the liquid crystal display by the display control means. Display device. In the vehicle display device according to any one of claims 1 to 4,
The display control means is configured to display a plurality of vehicle information corresponding to the abnormality alternately at different positions on the liquid crystal display unit when a predetermined abnormality occurs in the vehicle. Vehicle display device. In the vehicle display device according to any one of claims 1 to 3,
The display control means simultaneously displays each element of the vehicle information including a plurality of elements at different positions on the liquid crystal display unit when the vehicle is normal, while The vehicle abnormality information including the element corresponding to the abnormality among the elements and the vehicle normal information including the other elements are alternately displayed at different positions on the liquid crystal display unit,
The light emission control means lights the light source unit in a certain color during the normal time, while the display control means sends the vehicle abnormality information and the vehicle normal information to the liquid crystal display unit during the abnormality. A vehicle display device configured to light up the light source unit with a different color each time it is displayed. The vehicle display device according to claim 6,
Each element of the vehicle information including the plurality of elements is a graphic element,
The vehicular abnormality information includes a character element corresponding to the abnormality in addition to a graphic element corresponding to the abnormality. In the vehicle display device according to any one of claims 1 to 4,
The vehicle display device, wherein each of the vehicle information is vehicle navigation information.