JPH05424Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device for a vehicle that projects a display image of a display device onto a windshield of a vehicle.

[Problems that the prior art and the device aim to solve]

This type of display device is called a head-up display (hereinafter abbreviated as HUD) device, and while driving the vehicle, it displays speed, time, engine speed, and other information while looking ahead without moving your eyes to the meter etc. It can be visually recognized, and conventionally there was one shown in Fig. 4.

In FIG. 4, 1 is a HUD device consisting of a lens 1a, a fluorescent display 1b and a drive circuit 1c,
By projecting the display image of the fluorescent display 1b onto the windshield 2 through the lens 1a, the driver 3 visually recognizes a virtual image 4 of the display image in front of the windshield 2. In addition, 5 is a dart board, 6 is a handle, and - is a line of sight.

In the conventional display device described above, the projection position of the display image onto the windshield is fixed, such as in front of the driver. Therefore, when the vehicle turns right or left, if the line of sight moves to the right or left, the display disappears from the field of view, making it impossible to obtain necessary information. Furthermore, if the display position overlaps with a bright part of the front scenery caused by direct sunlight at dusk, for example, the display may not be visible.

Therefore, in view of the above-mentioned problems, the present invention attempts to provide a display device for a vehicle that improves visibility by making it possible to move the position of the display projected on the windshield depending on the situation. .

[Means and actions for solving problems]

In order to solve the above problems, in the present invention, a reflecting mirror is provided between the display device and the windshield, and the display image of the display device is projected onto the windshield by being reflected by the reflecting mirror. The reflecting mirror is moved by a moving mechanism and a rotating mechanism along the windshield surface in a direction perpendicular to the traveling direction of the vehicle, and is rotated so that the facing angle with respect to the windshield is changed.

As a result, the position where the display image of the display device is projected onto the windshield is changed, so that the driver can always view the display at an optimal position.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of a vehicle display device according to the present invention, and in the figure, the same parts as those described above with reference to FIG. 4 are given the same reference numerals.

In FIG. 1, a HUD device 1 housed within a dash board 5 is arranged so as to project a display image in the Y-Y direction orthogonal to the direction of travel of the vehicle. 10 is a reflecting device, and the reflecting mirror 10a is
For example, a along the projection direction Y-Y of the HUD device 1.
~c positions, and at each position Y-
It is rotated as shown by arrows A-B about an axis perpendicular to the ground and perpendicular to the Y direction, and set at a predetermined angular position.

FIG. 2 is a block diagram showing an example of the overall configuration of the vehicle display device shown in FIG. and a rotation mechanism 10c that rotates the
These mechanisms are controlled by a HUD drive circuit 1c. In addition, HUD drive circuit 1
A steering angle sensor 12 that detects the steering angle of the steering wheel 6 and a HUD lighting switch 14 installed, for example, on the front surface of the dash board 5 or inside the steering wheel 6 are connected to c.

With the above configuration, when the steering wheel 6 is turned to the right or left, the rotation angle is detected by the steering angle sensor 12, and the HUD drive circuit 1c controls the moving mechanism 10b and the rotating mechanism 10c based on the detected steering angle. Then, the reflector 10a is moved to positions a to c, and at the same time, the angle is rotated in the direction of arrow A-B so that the driver can see the display, and the windshield 2
Move the display position to a' to c'.

In addition, display position a' indicates the display position when the steering wheel 6 is turned fully to the left, b' indicates the display position when driving straight, and c' indicates the display position when the steering wheel 6 is fully turned to the right.
The projected image by the HUD device 1 is displayed for a certain period of time at a display position corresponding to the position of the handle 6 when the HUD lighting switch 14 is operated.

When the vehicle's direction of travel is changed to the right or left by operating the steering wheel, the line of sight also moves to the right or left.
At this time, since the display position of the HUD device 1 moves to the right or left depending on the handle operation, the display is always present in the line of sight direction, improving display visibility.

FIG. 3 shows an example in which a display position moving switch 16 installed inside the steering wheel 6 or on the front of the dash board 5 is used instead of the steering angle sensor 12. In this example, when a visual inconvenience arises, the display normally displayed at position b' on the front can be moved to the reflector 1 by operating the display position movement switch 16.
0a is temporarily moved and rotated to temporarily move the display position and improve visibility.

Furthermore, by operating the display movement switch 16, it is possible to move the display to an optimal display position according to differences in the physique and driving posture of the driver. in this case,
Advantageously, the reflector can also be rotated about an axis parallel to its direction of movement.

〔effect〕

As explained above, according to the present invention, the reflecting mirror is moved along the windshield surface in a direction perpendicular to the traveling direction of the vehicle by the moving mechanism and the rotating mechanism, and the opposing angle with respect to the windshield can be changed. Since the display image of the display device can be projected onto any desired position on the windshield, a highly visible display can be obtained.

[Brief explanation of the drawing]

1 is a plan view showing an embodiment of a vehicle display device according to the present invention, FIG. 2 is a block diagram showing a specific example of the display device shown in FIG. 1, and FIG. 3 is a plan view showing a specific example of the display device shown in FIG. A block diagram showing another specific example and FIG. 4 are a side view of a conventional example. 1...HUD device, 2...Windshield, 1
0...Reflector, 10a...Reflector, 10b...
Moving mechanism, 10c...Rotating mechanism.

Claims (1)

[Claims for Utility Model Registration] In a vehicle display device that projects a display image of the display device onto the windshield of the vehicle, the display device is provided between the display device and the windshield, and reflects the projected image from the display device. a reflecting mirror that enters the windshield; a moving mechanism that moves the reflecting mirror along the windshield surface in a direction intersecting the traveling direction of the vehicle; and a rotating mechanism that changes the facing angle of the reflecting mirror with respect to the windshield surface. A display device for a vehicle, characterized in that the display position on the windshield is changed by moving and rotating a reflecting mirror using the moving mechanism and the rotating mechanism.