JP2014085387A - Information display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display apparatus capable of continuing the display of information when a display unit is out of order.SOLUTION: A multiple display device 200 comprises: a system microcomputer 212 generating display contents of a warning lamp to be a display object; an LCD 220 and an LED 230 having a plurality of multiplexed display units; an LCD control unit 222 displaying the warning lamp of the contents generated by the system microcomputer 212 on the LCD 220 and the LED 230; and an LED driver 232. A warning lamp of the same contents as one displayed on the LED 230 is arranged so as to be superimposed on the warning lamp displayed on the LCD 220.

Description

  The present invention relates to an information display device that is mounted on a vehicle and displays warning information or the like when an abnormality occurs.

  2. Description of the Related Art Conventionally, an in-vehicle electronic device that prevents a warning light from being turned on when a lighting circuit fails is known by using a double lighting circuit for a warning light (see, for example, Patent Document 1). .) In this in-vehicle electronic device, even if a failure such as disconnection occurs in one lighting circuit, the other lighting circuit works, so that the reliability of failure display can be improved.

Japanese Patent Laid-Open No. 1-178068

  By the way, in the vehicle-mounted electronic device disclosed in Patent Document 1 described above, one warning light is controlled to be turned on using two lighting circuits, and the warning light is turned on even if one of the lighting circuits fails. However, if the warning light itself cannot be turned on, there is a problem that necessary information such as warning information cannot be transmitted to the user. This problem also applies to the display unit other than the warning light. Even if the drive unit that controls the display unit is duplicated, even if the display unit itself fails, the display unit is displayed even if the drive unit is normal. Can no longer do.

  The present invention has been created in view of such a point, and an object of the present invention is to provide an information display device capable of continuing to display information when a display unit fails.

In order to solve the above-described problem, an information display device of the present invention includes a notification information generating unit that generates notification information to be displayed, a display unit having a plurality of multiplexed display units,
Display control means for displaying the notification information generated by the notification information generating means on a plurality of display units. Since the display units are multiplexed, the display of the notification information can be continued even when some of the display units break down.

  Moreover, it is desirable that the plurality of display units described above are arranged in an overlapping manner. In particular, it is desirable that some display units arranged on the side closer to the user have a transmissive display surface that does not hinder the display of the remaining display units. Further, it is desirable to display notification information having the same display content on the plurality of display units described above. Thereby, even when a plurality of display units are provided, it is not necessary to increase the display area, and the apparatus can be downsized. In addition, for the user, only a single display unit can be seen as in the conventional configuration, and a sense of incongruity can be eliminated.

  Moreover, it is desirable that the notification information generation means is mounted on the vehicle and generates notification information for notifying that when a vehicle abnormality occurs. This makes it possible to reliably perform a warning operation when an important abnormality occurs.

  Moreover, it is desirable that the plurality of display units described above are mounted on a meter panel of the vehicle. Important warning information is concentrated on the meter panel of the vehicle. By applying the present invention to the display of these warning information, the warning information is surely displayed regardless of the presence or absence of failure of the display section. Display can be performed.

  Further, it is desirable that the notification information generation means is mounted on the vehicle and generates notification information including information essential for traveling of the vehicle. Specifically, it is desirable that the information essential for traveling the vehicle described above is at least one of a speedometer and a gear position. Thereby, it can be avoided that the vehicle immediately becomes poorly maintained when the display unit fails.

  Further, it further includes a half mirror disposed between the screen of some display units and the user's viewpoint and inclined with respect to the user's line of sight, and reflects the screen of the remaining display units to the half mirror. It is desirable to superimpose the virtual image thus made on the image on the screen of a part of the display unit. Thereby, the display of two display parts can be piled up easily.

  In addition, it is desirable that each of the plurality of display units described above display notification information using a different display method. Thereby, when there is a cause of failure in a specific display method, it is possible to continue display using a part of display units adopting another display method.

  Further, it is desirable that the display control means described above alternately displays notification information on a plurality of display units. As a result, when some of the display units fail, the occurrence of the failure can be easily known.

It is a figure which shows the structure of the vehicle-mounted system of one Embodiment. It is a figure which shows the specific example of the display content of LCD. It is a figure which shows the specific example of the display content of LED. It is a figure which shows the display content of the modification of LCD.

  Hereinafter, an in-vehicle system according to an embodiment to which an information display device of the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an in-vehicle system according to an embodiment. As shown in FIG. 1, the in-vehicle system of this embodiment includes a multiple display device 200, an ABS (Antilock Brake System) control ECU (electronic control device) 300, a power steering control ECU 400, which are connected to each other via an in-vehicle BUS 100. An engine control ECU 500 and an airbag control ECU 600 are provided. The in-vehicle BUS 100 is for transmitting and receiving signals to each other in accordance with, for example, a CAN (controller area network) protocol. Note that an in-vehicle BUS corresponding to a protocol other than CAN may be used.

  The multiple display device 200 displays various information necessary for driving on a meter panel arranged in front of the driver's seat of the vehicle. The multiple display device 200 includes an in-vehicle BUS controller 210, a system microcomputer 212, an LCD (liquid crystal display device) 220, an LCD control unit 222, an LED (light emitting diode) 230, an LED driver 232, and a half mirror 240.

  The in-vehicle BUS controller 210 is connected to the in-vehicle BUS 100, and performs physical signal input / output control according to the CAN protocol. The system microcomputer 212 controls the entire multiplex display device 200, and various kinds of operations are performed between the ABS control ECU 300, the power steering control ECU 400, the engine control ECU 500, and the airbag control ECU 600 via the in-vehicle BUS controller 210 and the in-vehicle BUS 100. Performs data input / output control.

  The LCD 220 is arranged so as to cover the entire surface of the meter panel, and the LCD controller 222 drives the LCD 220 to display a speedometer, an engine tachometer, and various warning lights. The LED 230 is disposed at the lower part of the meter panel, and by driving the LED 230 by the LED driver 232, these various warning lights are displayed. In this embodiment, various warning lights (all or a part) displayed on the LCD 220 are multiplexed (duplicated), and the same contents are lit in parallel using the LED 230. A specific example of duplexing will be described later.

  The half mirror 240 is disposed between the screen of the LCD 220 and the user's viewpoint, and is inclined with respect to the user's line of sight. The LED 230 is disposed below the half mirror 240. By appropriately adjusting the position and angle of such a half mirror 240, the display position of the virtual image (transmission display surface) 242 of the LED 230 is set so as to overlap a part of the display screen of the LCD 220.

  The ABS control ECU 300 detects the brake pedal state, the wheel state, and the like to control the hydraulic pressure for braking so that the wheel does not slip, and outputs an ABS abnormality signal when an abnormality related to this control is detected. The power steering control ECU 400 detects the steering angle, performs control to change the wheel angle by operating the hydraulic pump or the motor based on the detected angle, and detects an abnormality related to this control, and a power steering abnormality signal Is output.

  The engine control ECU 500 controls an engine (not shown) according to the state of the accelerator pedal, the running load state of the vehicle, and the like. The engine control ECU 500 outputs data indicating the engine speed and the traveling speed of the vehicle. These data are sent to the multiple display device 200 via the in-vehicle BUS100. In the present embodiment, images representing a speedometer and an engine tachometer displayed when the vehicle is traveling are displayed on the LCD 220 in the multiple display device 200. When the data indicating the engine speed and the vehicle traveling speed sent from the engine control ECU 500 is received, the system microcomputer 212 generates an image representing the speedometer and the engine tachometer based on these data. These images are displayed on the screen of the LCD 220 under the control of the LCD control unit 222.

  The airbag control ECU 600 performs control to open the airbag when a large impact applied to the vehicle is detected, and outputs an airbag abnormality signal when an abnormality related to this control is detected. The airbag abnormality signal, the ABS abnormality signal, and the power steering abnormality signal (these abnormality signals correspond to the notification information) are sent to the multiple display device 200 via the in-vehicle BUS100.

  The ABS control ECU 300, the power steering control ECU 400, the airbag control ECU 600, and the system microcomputer 212, which are described above, notify the notification information generating means of an ABS abnormality signal, a power steering abnormality signal, an airbag abnormality signal, and a warning that lights in response to these abnormality signals. The content of the lamp corresponds to the notification information, the LCD 220 and the LED 230 correspond to the display unit and the display unit, and the LCD control unit 222 and the LED driver 232 correspond to the display control unit.

  The in-vehicle system of this embodiment has such a configuration. Next, display using the LCD 220 and the LED 230 of the multiple display device 200 will be described. FIG. 2 is a diagram showing a specific example of display contents on the LCD 220. In FIG. 2, A is a display screen of the LCD 220, A1 shows an engine tachometer image, A2 shows a speedometer image, and A3 and A4 show warning light images. One warning light image A3 includes a plurality of warning lights. For example, it includes a power steering abnormality warning lamp A31 that is turned on when a power steering abnormality signal is output during traveling. Similarly, the other warning light image A4 includes a plurality of warning lights. For example, it includes an ABS abnormality warning lamp A41 that is lit and displayed when an ABS abnormality signal is output during traveling.

  FIG. 3 is a diagram illustrating a specific example of display contents of the LED 230. In FIG. 3, B is a display screen of the LED 230, and B3 and B4 respectively show warning light images. The contents and lighting timing of these warning lamp images B3 and B4 are the same as the warning lamp images A3 and A4 included in the display screen of the LCD 220, and the warning lamps having the same contents are displayed so as to overlap when displayed. The position of the virtual image 242 of the LED 230 is set.

  Accordingly, when a power steering abnormality signal is output while the vehicle is running, an operation in which the power steering abnormality warning lamp B31 is simultaneously turned on in the LED 230 is performed in parallel with the operation in which the power steering abnormality warning lamp A31 is turned on in the LCD 220. Similarly, when an ABS abnormality signal is output while the vehicle is running, an operation of simultaneously turning on the ABS abnormality warning lamp B41 in the LED 230 is performed in parallel with the operation of turning on the ABS abnormality warning lamp A41 in the LCD 220. These lighting operations are controlled by the system microcomputer 212.

  As described above, in the multiplex display device 200 of the present embodiment, the display unit is multiplexed using the LCD 220 and the LED 230 for the warning lamp display, and therefore, one of the display units (the LCD 220 or the LED 230) has failed. However, the display of the notification information can be continued using the other display unit.

  Further, even when a plurality of display units are provided for warning light display, it is not necessary to increase the display area for the plurality of display units, and the apparatus can be miniaturized. In addition, for the user, only a single display unit can be seen as in the conventional configuration, and a sense of incongruity can be eliminated.

  In the present embodiment, the multiple display device 200 is mounted on the meter panel of the vehicle. Important warning information is concentrated on the vehicle's meter panel. By displaying these warning information in duplicate, the warning information can be displayed reliably regardless of whether there is a failure in the display. Can be performed.

  Further, by performing a warning light display by the LED 230 using a virtual image generated through the half mirror 240, the LED 230 can be disposed at a position away from the LCD 220, and the detailed configuration of the multiple display device 200 is complicated. In addition, the display of the LCD 220 and the LED 230 can be easily overlapped.

  One warning lamp display is performed using the LCD 220, and the other warning lamp display is performed using the LED 230. In this way, by performing warning light display using different display methods, when there is a cause of failure in a specific display method, display using some display units that adopt other display methods is continued. can do.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the case where the warning light displayed based on various abnormal signals is duplicated has been described, but the present invention can be applied to display other information. For example, you may make it apply this invention, when generating and displaying the notification information containing information essential for driving | running | working of a vehicle.

  FIG. 4 is a diagram illustrating display contents of a modification example of the LCD 220. In the display example shown in FIG. 4, the speedometer C1 and the gear position C2 indicated by numerals are the targets of duplication compared to the display example shown in FIG. That is, the same contents are displayed using the LED 230 for the speedometer C1 and the gear position C2. As a result, even if the LCD 220 breaks down, these displays can be continued by the LED 230, and it is possible to prevent the vehicle from immediately becoming poorly maintained.

  In the above-described embodiment, the warning light display by the LCD 220 and the warning light display by the LED 230 are performed at the same time, but they may be alternately performed at a predetermined time interval. Thereby, when one side breaks down, it is possible to easily know the occurrence of this failure (the warning light is blinking). Further, the position of the warning light display by the LCD 220 and the position of the warning light display by the LED 230 may be shifted. Even in this case, when one fails, the other can know the occurrence of abnormality.

  In the above-described embodiment, the warning lamp image generated by the LED 230 is superimposed on the screen of the LCD 220 by using the half mirror 240, but two types of warning lamp displays are superimposed by other methods. Also good. For example, two LCDs may be arranged to overlap each other so that the display image of one LCD is superimposed on the display image of the other LCD. Further, instead of using the half mirror 240, the image of the LED 230 may be directly projected on the screen of the LCD 220.

  In the above-described embodiment, the LCD 220 and the LED 230 are combined, but both may be LCDs or both may be LEDs. Moreover, you may make it use another kind of display part (for example, organic EL etc.).

  As described above, according to the present invention, since the display units are multiplexed, it is possible to continue displaying the notification information even when some of the display units break down.

100 Car BUS
200 Multiple display device 210 In-vehicle BUS controller 212 System microcomputer 220 LCD
222 LCD controller 230 LED
232 LED driver 240 Half mirror 242 Virtual image 300 ABS control ECU
400 Power steering control ECU
500 Engine control ECU
600 Airbag control ECU

Claims (11)

Notification information generating means for generating notification information to be displayed;
Display means having a plurality of multiplexed display units;
Display control means for displaying the notification information generated by the notification information generating means on the plurality of display units;
An information display device comprising: In claim 1,
The information display device, wherein the plurality of display units are arranged to overlap each other. In claim 2,
A part of said display part arrange | positioned at the side close | similar to a user has the transmissive display surface which does not inhibit the display of the remaining said display part, The information display apparatus characterized by the above-mentioned. In any one of Claims 1-3,
The information display device, wherein the notification information having the same display content is displayed on the plurality of display units. In any one of Claims 1-4,
Mounted on the vehicle,
The information display device is characterized in that the notification information generation means generates the notification information for notifying that when a vehicle abnormality occurs. In claim 5,
The information display device, wherein the plurality of display units are mounted on a meter panel of a vehicle. In any one of Claims 1-6,
Mounted on the vehicle,
The information display device is characterized in that the notification information generating means generates the notification information including information essential for driving the vehicle. In claim 7,
Information essential to travel of the vehicle is at least one of a speedometer and a gear position. In claim 3,
A half mirror disposed between the screen of some of the display units and the viewpoint of the user and inclined with respect to the user's line of sight;
An information display device, wherein a virtual image obtained by reflecting the remaining screen of the display unit on the half mirror is superimposed on an image on a screen of a part of the display unit. In any one of Claims 1-9,
Each of the plurality of display units displays the notification information using a different display method. In any one of Claims 1-10,
The display control means displays the notification information alternately on the plurality of display units.

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