JP2008014783A - Navigation device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device for a vehicle having excellent handleability. <P>SOLUTION: In this device, a display part 24 displays a guide image by being mounted on a shield 23 of a helmet 2. Hereby, excellent handleability can be achieved by dispensing with a combiner projecting to the front of the helmet. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle navigation apparatus.

Conventionally, a vehicular navigation device that performs a navigation operation for a user of a motorcycle is known. For example, in the device of Patent Document 1, an image display device and a combiner are provided in a helmet worn by a user of a motorcycle. While the motorcycle is traveling, a navigation signal based on the current position of the motorcycle is transmitted to the image display device, and the image display device forms a display image indicated by the navigation signal on the combiner as a virtual image.
Japanese Patent Laid-Open No. 11-148837

  However, in the conventional apparatus, it is necessary to provide a combiner that protrudes forward of the helmet. For this reason, the combiner gets in the way when the helmet is worn or stowed, making it difficult to use.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an easy-to-use vehicle navigation device.

  In order to achieve the above object, in the vehicle navigation device according to claim 1, the vehicle navigation device includes a display unit, and displays a display image by the display unit to perform a navigation operation. The display unit includes: It is mounted on a shield part of a helmet worn by a user of the vehicle.

  As described above, in the vehicle navigation device of the present invention, the display means for displaying the display image is provided in the shield part of the helmet worn by the user of the vehicle, so that it is not necessary to provide a combiner or the like that protrudes forward of the helmet. Is good.

  As described in claim 2, it is desirable that the display means has light transparency. This makes it easier for the user to grasp the situation around the road on which the vehicle is traveling via the display means.

  As described in claim 3, the display means displays two display images for recognizing a stereoscopic image, and recognizes one of the two display images from the left eye position of the user, It is desirable to provide stereoscopic recognition means for recognizing a stereoscopic image by recognizing the other of the two display images from the right eye position of the user. Thereby, this apparatus can make a user recognize even a three-dimensional image.

  As described in claim 4, it is desirable that the image formation position of the stereoscopic image is set to be farther from the shield part. By setting the imaging position of the stereoscopic image farther than the shield part, the user can confirm the stereoscopic image with fewer movements of the viewpoint.

  According to a fifth aspect of the present invention, the display means displays a display image in an area excluding the display prohibition area set on the shield surface of the shield portion. The display prohibition area is in the width direction of the shield surface. In addition, it is desirable to set the central portion in the vertical direction. Usually, the user's line-of-sight direction is directed to the central portion in the width direction and the vertical direction of the shield surface, and the user grasps the situation around the road on which the vehicle is traveling from the central portion. For this reason, it is preferable to set a display prohibition area in the center so as not to display the display image.

  According to a sixth aspect of the present invention, there is provided detection means for detecting an inclination angle in the front-rear direction of the helmet, and the display means is configured to change the inclination angle when the helmet is inclined forward from the inclination angle detected by the detection means. Accordingly, it is desirable to move the display prohibition region vertically upward from the central portion of the shield surface. For example, when the helmet is tilted forward by changing the riding posture, such as when the vehicle is traveling on an expressway, the user's line-of-sight direction is also vertically upward from the central portion of the shield surface. This is to move.

  In addition, as a display image displayed on a display means, the information regarding the direction which the vehicle of Claim 7 should travel, the information regarding the distance to the intersection where the vehicle of Claim 8 is approaching, etc. are mentioned.

  FIG. 1 is a block diagram showing the overall configuration of a vehicle navigation apparatus according to an embodiment of the present invention. The vehicle navigation device of the present embodiment is mounted on a two-wheeled vehicle (hereinafter referred to as a vehicle) and operates. The navigation control unit 1, the angle calculator 21 attached to the helmet 2, the display control unit 22, And a display unit 24 attached to the shield 23 of the helmet 2.

  In FIG. 1, a navigation control unit 1 is composed of a known computer, and is installed on the body of a motorcycle (not shown) to execute various navigation operations. Specifically, the navigation control unit 1 sets a travel route to the destination, and the vehicle is moved to the travel route based on the current position and travel direction of the vehicle detected by a position detector and a travel direction detector (not shown). A guidance image (display image) for guiding the vehicle to travel along is output. The above-described guide image is an image in which a left-eye image (display image) recognized by the user with the left eye and a right-eye image (display image) recognized by the user with the right eye are superimposed, and the vehicle should proceed at the intersection. The direction (for example, an arrow etc.) and the distance (for example, 100 m etc.) until a vehicle arrives at the next intersection are shown.

  Next, the angle calculator 21 and display control unit 22 attached to the helmet 2 and the display unit 24 attached to the shield 23 of the helmet 2 will be described.

  The angle calculator 21 includes, for example, a gyro having a crystal resonator, and is based on the horizontal direction based on the amount of angle change detected from vibration based on Coriolis force generated when the resonator is vibrated. An inclination angle θ [rad] in the front-rear direction of the helmet 2 is calculated (FIG. 2).

  The display unit 24 is, for example, a light-transmitting organic EL display, and is displayed on the entire surface of the shield 23 of the helmet 2 to display a guide image (FIGS. 3 and 4). Further, the display unit 24 is provided with slits 25 having a large number of gaps parallel to the vertical direction of the shield 23. Due to the effect of the slit 25, only the left-eye image in the guide image is recognized by the user's left eye, and only the right-eye image in the guide image is recognized by the user's right eye (FIG. 5). As a result, the user can recognize the guide image as a stereoscopic video (FIG. 6). The image formation position of this stereoscopic image is set far from the shield 23 (that is, outside the helmet 2) (FIG. 6). In addition, since the display unit 24 is light transmissive and the slit 25 has a large number of gaps parallel to the vertical direction of the shield 23, the user can drive the vehicle through the display unit 24 and the slit 25. It becomes easier to grasp the situation around the road.

  The display control unit 22 acquires the guide image output from the navigation control unit 1 and displays it in an area other than the display prohibited area in the display unit 24. Specifically, when the display control unit 22 acquires the guide image from the navigation control unit 1, the display control unit 22 acquires the inclination angle θ [rad] of the helmet 2 calculated by the angle calculator 21 with respect to the horizontal direction. When the acquired inclination angle θ [rad] of the helmet 2 is equal to or greater than zero, that is, when the helmet is inclined forward (FIG. 2), the display control unit 22 displays the display prohibited area by the amount of the inclination angle. Is moved upward from the central portion of the display unit 24 (that is, the central portion in the width direction and the vertical direction of the shield 23), and a guide image is displayed in a region other than the display prohibited region. The above-mentioned display prohibition area (area surrounded by a broken line in FIGS. 3 and 4) is an area where the display of the guide image on the display unit 24 is prohibited, and the helmet 2 based on the horizontal direction. When the inclination angle θ [rad] of the vehicle is zero, that is, when the user is riding in a normal posture, the display prohibited area is set at the center of the display unit 24.

  The display unit 24 and the display control unit 22 constitute display means, and the slit 25 constitutes three-dimensional recognition means.

  Next, each of FIGS. 3 to 6 will be described in detail.

  FIG. 3 is a diagram illustrating an example of a guide image displayed on the display unit 24 when the user is in a normal posture in the vehicle navigation device of the present embodiment. Since the user is riding in a normal posture, the inclination angle θ [rad] of the helmet 2 with respect to the horizontal direction is substantially zero, and the display prohibited area is set at the center of the display unit 24. The guide image is formed as a stereoscopic image farther than the shield 23 at a position vertically above the center of the display unit 24. When the user is riding in a normal posture, the user's line-of-sight direction faces the center of the shield 23. For this reason, it is preferable to set a display-prohibited area at the center of the display unit 24 (that is, the center of the shield 23) so that no guide image is displayed in the area. Further, the above-described guide image is a traveling direction (for example, an arrow or the like) that the vehicle should travel at the intersection, and a distance (for example, 100 m or the like) until the vehicle reaches the next intersection.

  FIG. 4 is a diagram illustrating an example of a guide image displayed on the display unit 24 when the user is in a forward leaning posture in the vehicle navigation device of the present embodiment. In this case, since the user is riding in a forward leaning posture, the helmet 2 is inclined forward with respect to the horizontal direction, and the display prohibition area is moved upward in the vertical direction from the center of the display unit 24. Therefore, the guide image is formed as a stereoscopic image farther than the shield 23 at the lower center of the display unit 24. For example, when the helmet is tilted forward by the user changing the riding posture, such as when the vehicle is traveling on an expressway, the user's line-of-sight direction is also vertically upward from the central portion of the shield 23 described above. Moving. For this reason, it is preferable that the display prohibition region is also moved vertically upward from the central portion of the display portion 24 (that is, the central portion of the shield 23).

  FIG. 5 is an enlarged view of the display unit 24 and a part of the slit 25 attached to the display unit 24 in the vehicle navigation device of the present embodiment. Due to the effect of the slit 25, the display position of the display unit 24 recognized by the user's right eye is different from the display position of the display unit 24 recognized by the user's left eye. Therefore, by displaying the left-eye image and the right-eye image so as to correspond to the position recognized by the left eye and the position recognized by the right eye on the display unit 24, the apparatus recognizes the left-eye image to the user's left eye, The right eye image can be recognized by the user's right eye. As a result, the guide image can be recognized by the user as a stereoscopic video.

  FIG. 6 is a diagram illustrating an example in which a guide image is formed as a stereoscopic image from the left-eye image and the right-eye image in the vehicle navigation device of the present embodiment. As shown in FIG. 6, the imaging position of the guide image is set far from the shield 23 (that is, outside the helmet 2). As a result, the user can recognize the guide image as a stereoscopic image by moving the viewpoint less.

  Thus, in the vehicle navigation device of the present embodiment, the display unit 24 is attached to the shield 23 of the helmet 2 and displays a guidance image. Thereby, it is not necessary to provide a combiner protruding forward of the helmet, and it is easy to use.

  In the above-described embodiment, the right-eye image and the left-eye image are displayed on the display unit 24, and the user recognizes the guide image as a stereoscopic video. However, the present invention is not limited to this, and the slit 25 attached to the display unit 24 may be removed, and a single guide image (planar image) may be displayed on the display unit 24 to allow the user to recognize it.

1 is a block diagram illustrating an overall configuration of a vehicle navigation device according to an embodiment of the present invention. In the vehicle navigation apparatus of this embodiment, it is a figure which shows an example when a helmet is not inclined and a helmet is inclined ahead. In the vehicle navigation device of the present embodiment, when the user is in a normal posture, it is an example of a guide image displayed on the display unit. In the vehicle navigation device of this embodiment, when the user is riding in a forward leaning posture, it is an example of a guide image displayed on the display unit. In the vehicle navigation apparatus of this embodiment, it is the figure which expanded a part of slit which was equipped with the display part and the said display part. In the vehicle navigation apparatus of this embodiment, it is a figure which shows an example in which a guide image is imaged as a three-dimensional image from the image for left eyes, and the image for right eyes.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Navigation control part, 2 ... Helmet, 21 ... Angle calculator, 22 ... Display control part, 23 ... Shield, 24 ... Display part, 25 ... Slit

Claims (8)

A vehicle navigation apparatus that includes a display unit and displays a display image by the display unit to perform a navigation operation.
The vehicle navigation apparatus, wherein the display means is provided in a shield part of a helmet worn by a user of the vehicle. The vehicle navigation apparatus according to claim 1, wherein the display means has light permeability. The display means displays the two display images for recognizing a stereoscopic video,
One of the two display images is recognized from the user's left eye position, and the other of the two display images is recognized from the user's right eye position to recognize the stereoscopic image. 3. The vehicle navigation apparatus according to claim 1, further comprising a three-dimensional recognition unit. The vehicle navigation apparatus according to claim 3, wherein an imaging position of the stereoscopic image is set to be farther from the shield part. The display means displays the display image in a region excluding a display prohibition region set on a shield surface of the shield part,
The vehicular navigation device according to any one of claims 1 to 4, wherein the display prohibition region is set at a central portion in a width direction and a vertical direction of the shield surface. Providing a detecting means for detecting an inclination angle in the front-rear direction of the helmet;
When the helmet is inclined forward from the inclination angle detected by the detection means, the display means moves the display prohibited area from the central portion of the shield surface upward in the vertical direction according to the inclination angle. The vehicle navigation device according to claim 5. The vehicle navigation apparatus according to any one of claims 1 to 6, wherein the display unit displays information on a direction in which the vehicle should travel as the display image. The vehicle navigation apparatus according to claim 1, wherein the display unit displays, as the display image, information related to a distance to an intersection where the vehicle is approaching.

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