JP2017121841A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that makes it possible to suitably display important information even if malfunction occurs in any of a plurality of displays forming a large screen by their being arranged adjacently.SOLUTION: A display device in which a large screen is formed by adjacently arranging a plurality of displays 111 to 113 for respectively displaying different images, comprises: a detection part 120 that in which priority order of importance for different images are predetermined and that detects occurrence of malfunction in each of the plurality of display parts; and a control part 133 that displays images in high order of importance on a malfunction-free display on the basis of a detection signal of occurrence of malfunction, obtained by the detection part. Thus, even if malfunction occurs in any of the display parts 111 to 113, the control part 133 displays images in high order of importance on the malfunction-free display parts, making it possible to suitably display important information for a user.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display device suitable for use in, for example, a vehicle display device that displays various types of information related to a vehicle.

  As a conventional display device, for example, one disclosed in Patent Document 1 is known. In the display device (multi-display system) of Patent Document 1, a plurality of displays (display panels) are arranged so as to be adjacent to each other so that a pseudo large screen is formed.

International Publication No. 2012/102349

  However, in the display device of Patent Document 1, if any of the plurality of display devices breaks down, if important information is displayed on the failed display device, it is quick and accurate for the user. Information cannot be displayed.

  In view of the above problems, the object of the present invention is to form a large screen by arranging a plurality of displays adjacent to each other, and even if a failure occurs in any of the displays, important information can be appropriately displayed. An object of the present invention is to provide a display device.

  In order to achieve the above object, the present invention employs the following technical means.

In the present invention, in a display device in which a plurality of displays (111 to 113) for displaying different images are arranged adjacent to each other to form a large screen,
Priorities of importance for different images are predetermined,
A detection unit (120) for detecting the occurrence of a failure for each of the plurality of indicators;
And a control unit (133) for displaying images in order of importance on a display without a failure based on a detection signal of the occurrence of a failure by the detection unit.

  According to the present invention, even if a failure occurs in any of the plurality of display devices (111 to 113), the control unit (133) causes the display device without the failure to display images in descending order of importance. Since it is displayed, it becomes possible to display important information appropriately for the user.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.

It is a front view which shows the display part of the display apparatus of 1st Embodiment. It is explanatory drawing which shows a test | inspection pattern image and a sensor part. It is explanatory drawing which shows the whole structure of a display apparatus. It is explanatory drawing which shows the output timing of a test | inspection pattern image. It is explanatory drawing which shows the other output timing of a test | inspection pattern image. It is explanatory drawing which shows the other output timing of a test | inspection pattern image. It is explanatory drawing which shows the display state at the time of the failure generation in 1st Embodiment. It is explanatory drawing which shows the display state at the time of the failure generation in 2nd Embodiment.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly indicate that the combination is possible in each embodiment, but also a combination of the embodiments even if they are not clearly specified unless there is a problem with the combination. It is also possible.

(First embodiment)
A display device 100 according to the first embodiment will be described with reference to FIGS. The display device 100 of the present embodiment is mounted on a vehicle and displays, for example, various information related to the vehicle. The display device 100 includes a display unit 110, a sensor unit 120, a control device 130, and the like. First, the basic configuration of the display device 100 will be described with reference to FIGS.

  The display unit 110 has a plurality of displays 111 to 113, and these displays 111 to 113 are arranged adjacent to each other to form a large screen. The display unit 110 is, for example, arranged in a vehicle instrument panel in which a part facing the driver (user) is opened so that the plurality of indicators 111 to 113 extend in the entire lateral direction (lateral direction) of the vehicle. Has been. And the display image (henceforth, image) by the some indicator 111-113 is visually recognized from the opening part of an instrument panel.

  For example, three displays 111 to 113 forming the display unit 110 are used. Each indicator 111-113 has the same specification, and forms different images on the respective display surfaces 111a, 112a, 113a, and displays these images to the driver.

  As each of the indicators 111 to 113, for example, a TFT (Thin Film Transistor) liquid crystal display using a thin film transistor is used. Here, the display surfaces 111a to 113a of the respective indicators 111 to 113 are horizontally long rectangles (quadrangles). The size of the rectangle is equivalent in each of the indicators 111 to 113.

  Among the displays 111 to 113, an image displayed on the display surface 111a is, for example, a map image (image A in the figure) by a car navigation device. On the map image, the vehicle position, destination guidance information, and the like are displayed.

  The image displayed on the display surface 112a is, for example, various vehicle information images (image B in the figure) created by the control device 130, and is displayed as a digital image to the driver. Yes. Various vehicle information images include, for example, basic information images such as vehicle speed values, engine rotation values, engine water temperature values, and remaining fuel amount, integrated travel distance, travel status (normal, eco, power status, etc.), Vehicle information images such as average fuel consumption and cruising range, and various caution / warning images based on the occurrence of problems. The display on the display surface 112a is in accordance with the display content of a normal combination meter.

  Furthermore, the image displayed on the display surface 113a is, for example, an A / C image (image C in the figure) of the vehicle air conditioner created by the control device 130, and is displayed as a digital image to the driver. It has become so. The A / C image includes, for example, a set temperature of air conditioning, an amount of blown air conditioned air, a blow mode of conditioned air, and a defroster operating state for preventing the fogging of the window. The A / C image is along the display content of the air conditioning display panel.

  Further, as an image displayed on the display surface 113a, there is an image of the rear of the vehicle (hereinafter referred to as a camera image) taken by an in-vehicle camera 114 provided at the rear of the vehicle (image D in the figure). The camera image is displayed in place of the A / C image when the transmission gear is put in the back (R). In other words, the image switching display is performed on the display surface 113a. By looking at the camera image, the driver can easily and surely perform back running or backward parking.

  Frame portions 111b, 112b, and 113b, which are non-display portions, are provided on the outer peripheral portions of the indicators 111 to 113, respectively. In other words, the inner areas of the frame parts 111b to 113b are the display surfaces 111a to 113a. Each of the frame bodies 111b to 113b has a U-shaped cross section, and a belt-like flat plate is disposed along the outer periphery of each of the display surfaces 111a to 113a when viewed from the front of each of the indicators 111 to 113. It is formed to form a square frame. Each frame part 111b-113b is formed with the black metal member or the black resin member etc., for example.

  In each frame part 111b-113b, the mutually adjacent site | parts are spaced apart by predetermined spacing. That is, each indicator 111-113 is arrange | positioned at predetermined intervals in the left-right direction. In addition, the mutually adjacent site | parts of each frame part 111b-113b may contact | abut, and you may make it arrange | position each indicator 111-113 in the left-right direction without a space | interval.

  Each of the displays 111 to 113 is provided with backlights 111c, 112c, and 113c that transmit and illuminate the displays 111 to 113 from the back side. The backlights 111c to 113c have a light emitter such as a light emitting diode and a diffusion plate, and illuminate each of the displays 111 to 113 evenly. Various images are emitted and displayed on the display surfaces 111a to 113a by the light emitted from the backlights 111c to 113c and the light emission of the display surface pixel unit. The ground color of each of the display surfaces 111a to 113a is black, and an image set to a predetermined color is displayed on the black ground.

  Further, each of the displays 111 to 113 is provided with display unit power supply circuits 111d, 112d, and 113d and backlight power supply circuits 111e, 112e, and 113e.

  The display unit power supply circuits 111 d to 113 d are circuits that turn on and off the power of the respective indicators 111 to 113 based on a control signal from the control device 130.

  The backlight power supply circuits 111e to 113e are circuits that turn on and off the power of the backlights 111c to 113c based on a control signal from the control device 130. Further, the backlight power supply circuits 111e to 113e are configured to flash the corresponding backlights (111c to 113c) when any of the displays 111 to 113 fails. By this flashing light emission, the backlights 111c to 113c also function as a notification unit that notifies the driver of the occurrence of a failure in the indicators 111 to 113.

  The sensor unit 120 serves as a detection unit that detects the occurrence of a failure for each of the indicators 111 to 113. For example, a phototransistor, a photodiode, or a CCD camera is used as the sensor unit 120.

  On each of the displays 111 to 113, the control device 130 (control unit 133) displays an inspection pattern image (inspection pattern image) 10 as shown in FIG. 2 at a predetermined timing. . The inspection pattern image 10 is an image for inspecting the presence or absence of a failure of each of the indicators 111 to 113. For example, a white pattern is formed on a predetermined portion of the black background 11 (for example, two corners on the lower corner). Alternatively, the image is provided with a mark portion 12 that is an intermediate color between white and black. The sensor unit 120 is arranged so as to be opposed to each other at two lower corners of each of the indicators 111 to 113 so as to detect the mark unit 12.

  When the inspection pattern image 10 is displayed on each of the indicators 111 to 113 by the control device 130, the sensor unit 120 detects the mark unit 12 and outputs the detected signal to the control device 130. On the other hand, if any (or all) of the respective indicators 111 to 113 is out of order, the inspection pattern image 10 is not displayed on the failed indicator, and therefore the sensor unit 120 does not output a detection signal. . This non-detection state becomes a failure detection signal and is recognized by the control device 130.

  The control device 130 controls the display state of the image on each of the display devices 111 to 113, and uses a display device without a failure based on a failure detection signal (recognition of occurrence of failure) from the sensor unit 120. High priority images are displayed preferentially. The control device 130 includes a video processing unit 131, a video output unit 132, a control unit 133, and the like.

  The video processing unit 131 is, for example, map data stored in advance for a car navigation device, image data for forming a vehicle information image, image data for forming an A / C image, video of the in-vehicle camera 114, and the like. Is a part to be processed so as to become an output image.

  The video output unit 132 is a part that outputs the output image processed by the video processing unit 131 to each of the displays 111 to 113 as a video signal.

  The control unit 133 is a part that controls which display device displays which image among the display devices 111 to 113. In addition, the control unit 133 causes the display units 111 to 113 to display the inspection pattern image 10 on the video output unit 132, so that the display units 111 to 113 are based on the failure detection signal from the sensor unit 120. It is a part that grasps the presence or absence of a failure and preferentially displays an image with high importance using a display device that does not have a failure when a failure occurs in the display device. (Details will be described later).

  In the present embodiment, priority order of importance is determined in advance for various images, and the order data is stored in the control unit 133. The importance of various images is associated with how the driver can lead to safe and secure driving by using the information (image). In the present embodiment, the priority order of importance of various images is, for example, camera image (image D)> vehicle information image (image B)> A / C image (image C)> map image (image A).

  The camera image can accurately grasp the situation around the host vehicle (particularly, the viewing angle region), is useful for safe and safe driving, and has the highest importance. The vehicle information image is basic information to be noted in driving the vehicle, and is set to the next highest importance. In addition, the A / C image has a portion for displaying a defroster operating state for preventing the fogging of the window, which is important for safe driving on rainy days. Further, the map image is additional information for guiding to an unknown destination, and the importance is low.

  The display device 100 according to the present embodiment has the above-described configuration, and the operation and effect will be described below with reference to FIGS.

  The control device 130 (control unit 133) outputs a video signal (digital) to each of the displays 111 to 113, and as described above, the map image is displayed on the display 111 and various vehicle information is displayed on the display 112. The image is also displayed on the display 113 as an A / C image or a camera image during back travel. Further, when a failure occurs in the display unit 133, the control unit 133 performs priority display in the order of the images having the highest importance using the display unit in which no failure occurs.

  That is, as shown in FIG. 4, for example, when the display device 100 is activated, the control unit 133 causes each of the indicators 111 to 113 to display the inspection pattern image 10 within a predetermined time. The time point when the display device 100 is activated is, for example, when an accessory switch (ACC) of the vehicle is turned on, or when an ignition switch (IG) of the vehicle is turned on. Moreover, the predetermined time when displaying the inspection pattern image 10 is, for example, a time for inserting and displaying the inspection pattern image 10 for one frame after activation.

  After inserting the inspection pattern image 10, the control unit 133 inserts a mute frame (for example, two frames) and shifts to the original image display.

  Note that the number of inserted frames of the test pattern image 10 is not limited to one frame and may be a plurality of frames. By increasing the number of inserted frames of the test pattern image 10, the detection accuracy by the sensor unit 120 can be increased. On the other hand, if the number of inserted frames of the test pattern image 10 is increased too much, the test pattern image 10 may be seen by the driver, which may cause a sense of incongruity. Therefore, it is preferable to appropriately set the number of inserted frames of the inspection pattern image 10 in view of the balance between the two.

  Further, the display of the inspection pattern image 10 is not limited to the above-described activation, but may be a timing before the end of the operation of the display device 100 as shown in FIG. Alternatively, as shown in FIG. 6, for example, the display 113 may be switched to display the A / C image and the camera image.

  When the inspection pattern image 10 is displayed on each of the indicators 111 to 113, the sensor unit 120 detects the mark part 12 of the inspection pattern image 10 and outputs a detection signal to the control unit 133. Upon receiving the detection signal, the control unit 133 determines that the inspection pattern image 10 is correctly displayed on each of the displays 111 to 113, that is, determines that each of the displays 111 to 113 is operating normally. . And the control part 133 displays the various images with respect to each indicator 111-113 (normal display control).

  On the other hand, if any of the indicators 111 to 113 is out of order, the display of the image becomes impossible, and the inspection pattern image 10 is not displayed on the indicator with the failure. In this case, as a matter of course, the sensor unit 120 cannot detect the mark unit 12 and does not output a detection signal. When the control unit 133 displays the inspection pattern image 10 (sends a display signal) and there is no detection signal from the sensor unit 120, the absence of the detection signal is used as a failure detection signal. It is determined that the display corresponding to the sensor unit 120 has failed.

  Then, as shown in FIG. 7, for example, if the display 113 is out of order, the camera image (or A / C image) cannot be displayed. Therefore, the control unit 133 performs display based on the priority order of each image using the remaining normal indicators 111 and 112.

  In FIG. 7, the highest priority camera image (image D) is displayed on the display 112, and the next highest priority vehicle information image (image B) is displayed on the display 111. As a result, the display of the map image (image A) having the lowest priority order is omitted. Note that the display unit 112 also performs switching display of A / C images in the same manner as the display unit 113 in the normal case.

  Further, the control unit 133 causes the backlights (111c to 113c) to blink by the backlight power supply circuits (111e to 113e) corresponding to the failed display device.

  As described above, in the present embodiment, the priority order of importance for different images is determined in advance. And the sensor part 120 which detects generation | occurrence | production of a failure is provided with respect to each of the some indicator 111-113, and the control part 133 is a display without a failure occurrence based on the failure detection signal of the display device by the sensor part 120. The image is displayed on the device in descending order of importance. This makes it possible to display important information appropriately for the driver.

  In addition, the control unit 133 causes the display units 111 to 113 to display the inspection pattern image 10 within a predetermined time when the display units 111 to 113 are started, ended, or display switching between different images, and the sensor unit 120. Thus, the presence / absence of a failure in each of the indicators 111 to 113 is determined by detection. Thereby, a failure of the display can be detected easily and reliably.

  In addition, when there is a failure in the display unit, the control unit 133 blinks the backlight corresponding to the failed display unit, so that the driver can be immediately notified of the occurrence of the display unit failure. As a result, the driver can take appropriate measures such as inspection and repair.

(Second Embodiment)
A display device 100A of the second embodiment is shown in FIG. In the second embodiment, in contrast to the first embodiment, two or more of a plurality of images are divided and displayed on any display device in which no failure occurs.

  In the first embodiment, if a failure occurs in the display unit 113, the control unit 133 causes the display unit 112 to display the image D (image C) in order of priority, and the display unit 111 displays the image B. Is displayed, and the display of the image A having a low priority is omitted.

  However, in this embodiment, if a failure occurs in the display device 113, the control unit 133 causes the display device 112 to display the image D (image C) and also causes the display device 111 to divide the image B and the image A. And display it.

  As a result, even if one of the display devices has a failure, all of the different images can be displayed on the display device without the failure.

(Other embodiments)
In each of the above-described embodiments, if any of the indicators 111 to 113 has a failure, the corresponding backlight is caused to blink and emit light. -The driver may be notified by a warning light or the like.

  Moreover, in each said embodiment, it replaced with TFT liquid crystal display as the displays 111-113, and used other types of displays, such as an organic electroluminescent display which consists of a layered structure using an organic compound, for example. It may be a thing. For example, the organic EL display has an excellent display function in a low temperature environment, and is suitable for use in such an environment.

  Moreover, in each said embodiment, although the some indicator 111-113 was arranged in the left-right direction, it is good not only this but in the up-down direction. In this case, for example, a display device in which a plurality of indicators are arranged in the vertical direction is arranged at a position toward the shift lever from the surface facing the driver of the instrument panel in the center of the vehicle, so that A screen display device can be provided.

  Moreover, although each said display surface 111a-113a demonstrated as a rectangle (quadrangle) in each said embodiment, it is not limited to this. For example, a square shape, a square shape of a square, a semicircular shape, a circular shape, or the like may be used.

  In the above embodiments, the three displays 111 to 113 have been described. However, the two displays 111 and 112 may be used as the minimum unit. Alternatively, four or more indicators may be used.

10 Inspection pattern image (pattern image for inspection)
100, 100A Display device 111, 112, 113 Display (multiple displays)
111c, 112c, 113c Backlight (notification unit)
120 Sensor part (detection part)
133 control unit

Claims (4)

In a display device in which a plurality of displays (111 to 113) that display different images are arranged adjacent to each other to form a large screen,
Priorities of importance for the different images are predetermined,
A detector (120) for detecting the occurrence of a failure for each of the plurality of indicators;
A display device comprising: a control unit (133) configured to display the images in order of the importance on a display device without occurrence of failure based on a detection signal of failure occurrence by the detection unit.   The detection unit is a pattern image for inspection (10) displayed on the display by the control unit within a predetermined time when the display is started, when the display is started, or when the display is switched between different images. The display device according to claim 1, which is a sensor unit that detects   The display device according to claim 1, wherein the control unit causes two or more of the plurality of images to be displayed in a divided manner on any of the display devices in which the failure does not occur.   The display device according to any one of claims 1 to 3, further comprising a notification unit (111c to 113c) that is operated by the control unit and notifies a user of the occurrence of a failure of the display.

Images