JP2010208632A - Vehicular display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular display device with which the position of a displayed image can be easily adjusted. <P>SOLUTION: A vehicular display (a head-up display) 1 includes: a display 3 for emitting the display light forming the predetermined display image; a reflective member for allowing the display image to be recognized by a driver by reflecting the display light toward the driver; a moving means (a motor) 7 for moving the display position of the display image by changing the applying direction of the display light to be applied to the reflective member; an operating means (a control unit) 14 for permitting the drive of the moving means 7; and a control means 11 for executing the light emission and display of the entire display range of the display image when operating the operating means 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle display device, and more particularly to a vehicle display device in which predetermined information is displayed in a display area on a windshield.

  2. Description of the Related Art Conventionally, in a display device for a vehicle such as an automobile, a so-called head-up display has been known for the purpose of improving visibility when a driver views a display while driving. Such a head-up display is a thin-film combiner (reflecting member) formed on the surface of the windshield or a windshield that has been subjected to a combiner treatment, with display light emitted from a light-emitting display installed at the bottom of the windshield. By reflecting toward the driver with the (reflecting member), the driver recognizes the display image, which is a virtual image, over the front scenery through the windshield.

  By taking such a configuration, the driver can look forward through the windshield and display information as compared with the case of viewing a conventional display device (meter device) fitted in a predetermined position in the instrument panel. Since the amount of movement of the line of sight due to alternately performing the visual recognition of is significantly reduced, the visibility can be improved. Further, the display image projected on the windshield can be recognized without greatly changing the focus of the eyes when the driver looks forward through the windshield, so the time required to recognize the display information is shortened. In addition, the display information can be confirmed while looking at the front view, and safety during driving can be improved.

JP-A-7-266925

  By the way, in such a head-up display, the driver needs to change the position of the display image according to his / her own viewpoint because the driver recognizes the display image that is a virtual image on the front scene through the windshield. There is.

  Generally, the driver moves the display image up and down by operating a control switch for rotationally moving the reflecting mirror in the display, and selects the position of the display image that matches his / her viewpoint. To do.

  However, since the display that is lit when the driver adjusts the position of the display image is a part of the display when the display image is fully lit, the driver can adjust the position of the display image. There is a problem in that it is difficult to accurately adjust the position of the display image because it is necessary to adjust the position of the display image without recognizing the range.

  In order to solve such problems, Patent Document 1 discloses a technique in which the head-up display is set to the full lighting mode and the display brightness is set to the maximum value when the vehicle is stopped immediately after the ignition is turned on. .

  However, in such a head-up display, since the display is set to the full lighting mode only when the ignition is turned on and only when the gear is parked, the position of the display image can be easily adjusted. Opportunities were limited. In addition, there is a problem that visibility cannot be improved even if the display is set to the maximum luminance during the daytime, and a head-up display capable of easily adjusting the position of the display image regardless of day or night is desired. ing.

  The present invention pays attention to such problems, and can easily adjust the display image according to the position that matches the viewpoint of the driver without limiting the opportunity to adjust the position of the display image. The purpose is to provide.

  In order to solve the above problems, the present invention provides a display that emits display light that forms a predetermined display image, and a reflection that reflects the display light toward a driver so that the driver recognizes the display image. A member, a moving unit that moves a display position of the display image by changing an irradiation direction of the display light applied to the reflecting member, an operating unit that permits driving of the moving unit, and an operation of the operating unit And control means for emitting and displaying the entire display range of the display image.

  Further, the control means is characterized in that when the entire display range is lit and displayed, the luminescent brightness is made lower than the luminescent brightness of the display image.

  According to the vehicle display device of the present invention, the display range of the display image can be recognized, and the driver matches the position of the display image with the driver's viewpoint without limiting the opportunity to adjust the position of the display image. It is possible to adjust easily.

BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram which shows the head-up display which is the 1st Embodiment of this invention. The block diagram which shows an electrical structure same as the above. The figure which shows the example of a display image in the same as the above. The figure which shows the example of a display in the same as the above. The figure which shows the example of a display in the head-up display which is the 2nd Embodiment of this invention. The figure which shows the example of a display in the head-up display which is the 3rd Embodiment of this invention.

  Hereinafter, the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the head-up display 1 includes a light source 2, a display 3, a reflecting mirror 4, a windshield 5, a combiner (reflecting member) 6, and a motor (moving means) 7.

  The light source 2 emits light toward the display device 3 described in detail later.

  The display 3 is composed of a dot matrix type liquid crystal display element, and is provided with a predetermined display pattern indicating driving information such as a vehicle speed and an engine speed, and is disposed in front of the light source 2. The display 3 emits the display pattern as the predetermined display light 3a by transmitting the light emitted from the light source 2.

  The reflecting mirror 4 reflects the display light 3a emitted from the display 3 to a combiner 6 which will be described in detail later. The reflecting surface 4a which reflects the display light and a motor which will explain the reflecting mirror 4 in detail later. 7 and a gear portion 4b that meshes with a gear 7a that is mounted on the shaft portion.

  The combiner 6 is a thin film-like reflecting member formed on the indoor side surface of the windshield 5 and reflects the display light 3a toward the driver.

  The motor 7 is a moving means for moving the reflection direction of the display light 3a up and down by rotating the reflecting mirror 4 to change the angle of the reflecting surface 4a. For example, when the viewpoint of the driver is at the position of the viewpoint 8, the angle of the reflecting mirror 4 is adjusted via the motor 7 so that the reflection direction of the display light 3a set in the direction matching the viewpoint 9 is adjusted. The reflected light 3a is directed to the driver by adjusting the reflection direction to match the viewpoint 8. The driver to whom the display light 3 a is directed recognizes the display image 10 that is a virtual image superimposed on the front scenery through the windshield 5. Accordingly, the driver can recognize the display image 10 at a position where the driver can easily see.

  Next, the electrical configuration of the head-up display 1 will be described with reference to FIG.

  The head-up display 1 is mainly composed of a microcomputer 12 that is a control means 11, a sensor 13 such as a speed sensor, a control unit 14 that is an operation means, and a motor 7 provided in the reflecting mirror 4.

  The control means 11 is a microcomputer 12 which is a calculation means for executing a predetermined program. When a running signal corresponding to the running state of the vehicle, such as a vehicle speed, is input via the sensor 13, the control means 11 responds to the vehicle signal. A predetermined calculation is performed, and a control signal corresponding to the calculation result is output to the display device 3 via a drive circuit (not shown), thereby obtaining a display pattern which is a speed display corresponding to the traveling state of the vehicle. It is.

  Further, the control means 11 executes processing related to the position adjustment of the display image 10 on the display device 3 to be described in detail later and a mark display to be described later, based on the input of the operation signal from the control unit 14.

  The control unit 14 has a plurality of switch groups composed of push button switches and the like, adjusts the display position of the display image 10, and adjusts the on / off of the head-up display 1 itself and the display brightness according to the driver's preference. To adjust.

  Next, with reference to FIG. 3 and FIG. 4, a method for adjusting the position of the display image 10 and displaying a mark indicating the display range of the display image 10 according to the first embodiment of the present invention will be described.

  First, the position adjustment of the display image 10 will be described. As shown in FIG. 1, when the display image 10 is adjusted to match the viewpoint 9, the display image 10 is recognized as shown in FIG. 3C from the viewpoint 8, and the entire display range A of the display image 10 is recognized. (The shaded area indicates the outside of the driver's recognition range). Here, the display range A indicates a region including the entire range in which the liquid crystal display element is formed in the display 3, and is a range in which a display can be performed in the entire lighting state. When the driver's own viewpoint is at the position of the viewpoint 8, the driver drives the motor 7 by operating the control unit 14 so that the angle of the reflecting surface 4a of the reflecting mirror 4 is adjusted so that the state shown in FIG. The position of the display image 10 is adjusted by changing the position. However, it is difficult for the driver to grasp the display range A of the display image 10 during normal lighting as compared to FIG.

  Therefore, in the head-up display 1, when the driver operates the control unit 14 and the input signal of the control unit 14 is input to the control means 11, the display on the display 3 is performed at the same time as the motor 7 is activated. A control signal is output to the display 3 so that the display range A of the image 10 can be recognized, and the mark B is displayed. As shown in FIG. 4, the mark B is a frame mark indicating the display range A (FIG. 4A). In addition, the shape of the frame mark may be an intermittent frame (FIG. 4 (b)) that is located only at the top and bottom surrounding the display range A and not at the left or right, or parentheses (FIG. 4) located at the corner of the display range A. (C)).

  Further, when the input signal of the control unit 14 input to the control means 11 is to move the display image 10 upward, the control means 11 displays the mark B, and the display image 10 is displayed as shown in FIG. The first display unit B1 corresponding to the moving direction is blinked to be displayed differently from the second display unit B2 which is another display unit. When the input signal of the control unit 14 input to the control means 11 is to move the display image 10 downward, the first display unit located below the mark B corresponds to the moving direction of the display image 10. It becomes a display part and blinks.

  As a display method for displaying the first display unit B1 differently from the second display unit B2, which is another display unit, the first display unit B1 is displayed in a color different from that of the second display unit B2. It may be a display or a combination of display in a color different from the blinking display.

  The head-up display 1 has an opportunity to adjust the position of the display image 10 by causing the control means 11 to display the mark B indicating the display range A of the display image 10 at the same time when the driver operates the control unit 14. Without limitation, it is possible to easily adjust to a position that matches the viewpoint of the driver.

  Further, the display means 11 displays the first display portion B1 of the mark B corresponding to the moving direction of the display image 10 by the operation of the control unit 14 differently from the second display portion B2, thereby allowing the driver to display the mark B. On the other hand, the moving direction of the display image 10 can be clearly recognized, and the position of the display image can be more easily adjusted to a position that matches the viewpoint of the driver.

  In particular, when the mark B, which is a frame-like mark provided so as to surround the display range A, is used as a mark indicating the display range A of the display image 10, the display image 10 can be displayed with a simple design with respect to the display image 10. It is possible to make the driver recognize the display range A without disturbing.

  Next, a display method for indicating the display range A of the display image 10 in the second embodiment of the present invention will be described with reference to FIG. 5, which is the same as or equivalent to the above-described first embodiment of the present invention. Parts are denoted by the same reference numerals and detailed description thereof is omitted.

  The head-up display 1 according to the second embodiment of the present invention is different from the above-described first embodiment of the present invention in that the driver operates the control unit 14 to input the control unit 14. When the signal is input to the control means 11, the display range 10 of the display image 10 on the display 3 can be recognized simultaneously with the operation of the motor 7. A control signal is output to the display 3 so that a certain light emitting portion and a non-light emitting portion other than the display image 10 are reversed and displayed.

  In FIG. 5, during normal lighting, the display range A displays the display image 10 by a positive display in which the inner portion of the display image 10 is a light emitting portion and the background portion which is the outer portion of the display image 10 is a non-light emitting portion. (FIG. 5 (a)). When the driver operates the control unit 14 and an input signal of the control unit 14 is input to the control means 11, the control means 11 displays the display range A of the display image 10 at the same time as the motor 7 operates. The display image 10 is displayed by inverting the negative display with the inner portion as a non-light emitting portion and the background portion as the outer portion of the display image 10 as the light emitting portion (FIG. 5B). In the negative display in the display image 10, considering the visibility to the driver, it is desirable to reduce the light emission luminance of the background portion in the display range A to the light emission luminance at the time of normal lighting in the display image 10.

  In such a head-up display 1, when the control unit 14 is operated, the light emitting portion and the non-light emitting portion in the display range A are reversed and displayed, so that the display range A can be displayed without providing a special display indicating the display range A. The driver can be made aware and the position of the display image 10 can be easily adjusted to a position that matches the viewpoint of the driver with a simpler configuration.

  In addition, the light emission luminance when the light emission portion and the non-light emission portion in the display range A are reversed and displayed is decreased from the light emission luminance in the display before the reversal. Even if it is enlarged, it becomes possible to suppress the brightness of the display recognized by the driver from being excessive, and the visibility to the driver can be improved.

  Next, a display method for displaying the display range A of the display image 10 according to the third embodiment of the present invention will be described with reference to FIG. 6, and the first and second embodiments of the present invention described above will be described. The same or corresponding portions are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 6, during normal lighting, the display range A displays the display image 10 by a positive display in which the inner portion of the display image 10 is a light emitting portion and the background portion which is the outer portion of the display image 10 is a non-light emitting portion (FIG. a)). When the driver operates the control unit 14 and an input signal of the control unit 14 is input to the control means 11, the control means 11 emits light in all areas of the display range A at the same time as the motor 7 operates. It is displayed (FIG. 6B). In the light emission display of all the areas of the display range A, it is desirable to reduce the light emission luminance of the light emission display in the display range A from the light emission luminance at the time of normal lighting in the display image 10 in consideration of visibility to the driver.

  In such a head-up display 1, the display range A can be recognized by the driver without providing a special display indicating the display range A by displaying the entire display range A by light emission when operating the control unit 14. With a simpler configuration, the position of the display image 10 can be easily adjusted to a position that matches the viewpoint of the driver.

  In addition, the light emission luminance when the entire display range A is lit and displayed is reduced compared to the light emission luminance in the display during normal lighting. It becomes possible to suppress that the brightness of the display recognized by the driver is excessive, and it is possible to improve the visibility for the driver.

  In the present invention, the display 3 may be a self-luminous element such as an electroluminescent element (ELD) or a light emitting diode (LED). In this case, the light source 2 can be omitted.

1 Head-up display (vehicle display device)
2 Light source 3 Display 3a Display light 4 Reflective mirror 5 Windshield 6 Combiner (reflective member)
7 Motor (moving means)
8 viewpoint 9 viewpoint 10 display image 11 control means 12 microcomputer 13 sensor 14 control unit (operation means)
A Display range B Frame mark (mark)
B1 1st light emission part B2 2nd light emission part

Claims (2)

A display that emits display light that forms a predetermined display image, a reflective member that reflects the display light toward the driver and causes the driver to recognize the display image, and the display that is applied to the reflective member Moving means for moving the display position of the display image by changing the direction of light irradiation, operating means for permitting driving of the moving means, and displaying the entire display range of the display image when the operating means is operated A vehicle display device comprising a control means. The vehicle display device according to claim 1, wherein the control unit is configured to reduce the light emission luminance from the light emission luminance of the display image when performing light emission display of the entire display range.

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