JPH0715789Y2 - Vehicle display - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is called a head-up display (HUD) and is a projector for a HUD that is formed by mounting a projector main body through a support mechanism in a dashboard of a vehicle. The present invention relates to a vehicular display device in which a display image of a display unit in a projector body is projected on a sticker so that a driver can visually recognize a reflection image by a wind sticker.

[Conventional technology]

As a conventional device of this type, as shown in FIG. 5, a HUD projector 2 is attached to a lower part of a dashboard 1 in front of a driver's seat, and a projection light 3 from the HUD projector 2 is reflected on an inner surface of a wind seal 4. , A display image is formed in the front position of the driver 5, and the HUD projector 2
There is a device in which the position of the display image can be moved up and down at the front position according to the physique of the driver 5 and the like by moving the direction of the projection light from the vehicle in a vertical plane as shown in the figure.

[Problems to be solved by the device]

In the above-described conventional device, since the display can be moved in the vertical direction, when the line-of-sight position changes due to individual differences in physique, it is possible to move the display position up and down so that the display can be performed at a position suitable for each person. Yes, but because the display position cannot be moved to the left or right, there is a feature in the driving posture, and in the case of a driver who shifts his body to the right or left when driving, be sure to fully see all the displayed images. There was also a problem that I could not do it.

Therefore, an object of the present invention is to provide a vehicular display device capable of changing the display position according to not only the physique of the driver but also the driving posture of the driver.

[Means for Solving the Problems]

In order to solve the above problems, the vehicular display device according to the present invention includes a projector for a HUD in which a projector body is mounted in a dashboard of a vehicle through a support mechanism, and a window seal is used to display a display device in the projector body. In a configuration in which a display image is projected so that a driver can visually recognize a reflection image by the windshield, the support mechanism rotates the projector main body about a first axis intersecting a projection optical axis of the projector main body. The support frame is rotatable about a second shaft that is freely supported and orthogonal to the first shaft. One of the first and second shafts is in the traveling direction of the vehicle, and the other is orthogonal to the traveling direction of the vehicle. The projector for HUD is attached so as to match with the right and left direction of the vehicle.

The vehicle display device according to the present invention also mounts the HUD projector in the dashboard between the driver's seat and the passenger seat of the vehicle and projects the display image of the display unit in the projector body from a diagonal direction on the windshield. It is also characterized.

[Action]

In the above structure, the support mechanism that mounts the projector main body of the HUD projector inside the dashboard of the vehicle is configured to support the projector main body rotatably about a first axis intersecting the projection direction of the projector main body. 1 is a support frame that is rotatable about a second axis that is orthogonal to the first axis, and one of the first and second axes is in the traveling direction of the vehicle, and the other is in the vehicle that is orthogonal to the traveling direction. Matched to the left and right respectively. Therefore, by rotating about an axis that coincides with the traveling direction of the vehicle, the direction of the projection optical axis of the projector main body is parallel to the left and right, and about the axis that coincides with the left and right direction of the vehicle orthogonal to the traveling direction of the vehicle. By rotating, the direction of the projection optical axis of the projector main body can be changed vertically, and the desired display position can be freely moved according to not only the physique of the driver but also the driving posture. .

In addition, the projector main body of the HUD projector is mounted on the dashboard between the driver's seat and the passenger seat of the vehicle via the support mechanism, and the display image on the display inside the projector main body is projected diagonally on the windshield. Therefore, the reflected image by the wind seal that can be visually recognized by the driver in the driver's seat is formed diagonally in front of the driver.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a vehicle display device according to the present invention, in which the same parts as those described above with reference to FIG. 5 are designated by the same reference numerals.

In FIG. 1, the HUD projector 2 is mounted in a dashboard (not shown) between the driver's seat and the passenger seat so that the projection direction is oblique to the surface of the wind seal 4. As a result, the HUD projector 2 projects the display image of the display (not shown) inside the projector main body obliquely on the wind seal 4 and reflects it on the surface of the wind seal 4 to the driver's 5 eye position. Let
By seeing the reflected light from the windshield 4, the driver 5 sees the display image diagonally ahead of the driver 5.

The HUD projector 2 moves the display image up and down,
In order to be able to move in the left-right direction, the projector main body in a first direction x intersecting the direction z of the projection optical axis and a second direction y intersecting the direction z and orthogonal to the direction x. A rotatably adjustable support mechanism for rotatably supporting is provided as shown in FIG.

In FIG. 2, reference numeral 21 denotes a projector main body having a rectangular parallelepiped shape, and a rectangular opening of the projector main body 21.
An optical lens 21b for projecting a display image of a display device (not shown) inside is fitted into 21a. Reference numeral 22 denotes a rectangular support frame that supports the projector main body 21 so as to be rotatable in two directions. The support frame 22 has long side facing portions 22a and 22b.
Rotation shafts 23a and 23b are fixed to the outer end surface of the shaft by aligning them in a straight line. The rotating shafts 23a and 23b are rotatably supported by a vehicle-side fixing member (not shown). On the other hand, rotating shafts 23c and 23d are aligned and fixed to the opposite outer walls 21c and 21d along the short side of the opening 21a of the projector body 21. The rotary shafts 23c and 23d are short side facing portions of the support frame 22.
It is rotatably supported by the inner end faces of 22c and 22d.

Gears 23e and 23f are fixed to the rotary shafts 23a and 23d, respectively, and motors 24a and 2f are attached to these gears 23e and 23f.
The pinion gears of the rotating shaft of 4b are meshed with each other.
The motors 24a and 24b are driven by motor drive circuits 25a and 25b, respectively, and the motor drive circuits 25a and 25b are controlled by adjustment switches 25a and 25b that adjust the display image position in the left-right direction and the up-down direction, respectively. The adjustment switches 25a and 25b may be provided on the instrument panel of the dashboard 1.

In the HUD projector 2 described above with reference to FIG. 2, assuming that the axes of the rotary shafts 23a and 23b are the x-axis and the axes of the rotary shafts 23c and 23d are the y-axis, the x-axis is the traveling direction of the vehicle as shown in FIG. Further, as shown in FIG. 4, the y-axis is mounted in the dashboard 1 through the support frame 22 so that the y-axis is aligned with the left-right direction orthogonal to the traveling direction of the vehicle.

In the above structure, when it is desired to move the reflection direction of the display image projected from the HUD projector 2 on the windshield 4 to the left or right, the adjustment switch 26a is operated by turning it to the desired left or right direction to turn on the motor. Drive circuit 25
The motor 24a is driven in the forward or reverse rotation direction by a. The rotation of the motor 24a causes the gear 23e and the gear 23
The rotation shaft 23a to which e is fixed is driven to rotate, and the support frame 22 is rotated about the x axis. By this rotation of the support frame 22, the projector main body 21 supported by the support frame 22 via the rotation shafts 23c and 23d is also rotated about the x axis. When the projector body 21 is rotated about the x-axis, the reflection point P of the display image projected by the HUD projector 2 becomes the third point.
As shown by the arrow in the figure, it is moved to the desired position in the left-right direction.

On the other hand, when it is desired to move the reflection direction of the wind seal 4 in the vertical direction, the adjustment switch 26b is operated in the desired upward or downward direction to turn it on, and the motor drive circuit 25b causes the motor 24b to rotate in the desired forward or reverse direction. Drive in the direction. The rotation of the motor 24b causes the gear 23f and the gear 23
The rotation shaft 23d to which f is fixed is driven to rotate, and the support frame 22 is rotated about the y axis. By the rotation of the support frame 22, the projector main body 21 is also rotated about the y axis. When the projector main body 21 is rotated about the y-axis, the reflection point P of the display image projected by the HUD projector 2 is vertically moved to a desired position as indicated by an arrow in FIG.

By the way, in general, when the driver visually recognizes the display image of the HUD projector 2 displayed on the line of sight during driving, the driver 5 unconsciously moves the line of sight to the display image. It is said that so-called viewpoint suction development occurs. In this development, not only the viewpoint is frequently attracted in the direction of the display image, but also the gazing point, that is, the focus of the eyes is adjusted to the distant display image, so that the field of view of the driver 5 becomes a narrower range, and an event in front of the vehicle occurs. For example, it is possible to induce the display of a brake lamp, a turn signal, or the like of the immediately preceding vehicle, or a signal at an intersection or an oversight of a passerby or the like. In addition, the display of the HUD projector 2 causes a front view masking phenomenon that blocks the front view of that portion, and this phenomenon is emphasized particularly at night. The various phenomena described above are important problems in which the driving safety of the vehicle is impaired by the display by the HUD projector 2, but in the above-described embodiment, the reflection by the wind seal that can be visually recognized by the driver in the driver's seat. Since the image is formed obliquely in front of the driver, it is possible to eliminate the front field of view masking phenomenon and the viewpoint attraction phenomenon during driving.

In the illustrated embodiment, the adjustment switches are provided separately for up and down and left and right, but one of the four contacts is turned on to select one of the motors 24a and 24b depending on the operating direction of one switch knob. Alternatively, the display position may be moved to a desired position by reversing normally.

〔effect〕

As described above, according to the present invention, the direction of the projection optical axis of the HUD projector can be changed not only in the vertical direction but also in the horizontal direction, and the position of the reflected image that the driver can visually recognize, that is, the display Since the position can be freely moved up, down, left and right, the display position can be adjusted to the optimum position according to the individual difference in the physique of the driver and the driving posture of the driver.

Further, since the reflection image by the wind seal that can be visually recognized by the driver in the driver's seat is formed obliquely in front of the driver, the phenomenon of front view masking and the viewpoint suction phenomenon during driving can be eliminated. You can also

[Brief description of drawings]

1 is a perspective view showing an outline of a state in which a vehicle display device according to the present invention is attached to a vehicle, and FIG. 2 is a partially broken perspective view showing a detailed structure of a part of the vehicle display device of FIG. 3 and 4 are a top view and a side sectional view for explaining how to adjust the display position of the vehicular display device according to the present invention, and FIG. 5 is a side sectional view showing an example of a conventional vehicular display device. is there. 1 ... Dashboard, 2 ... HUD projector, 4 ... Wind seal, 5 ... Driver, 21 ... Projector body,
22 ... Support frame, 24a-24d ... Rotating shafts, 24a, 24b ... Motor.

Claims (2)

[Scope of utility model registration request] 1. A display image of a display unit in the projector body is projected on a wind seal from a projector for HUD which is mounted on the dashboard of a vehicle via a support mechanism, and a reflection image by the wind seal is projected. In a display device for a vehicle, which is made visible to a driver, the support mechanism includes: a first shaft that rotatably supports the projector main body about a first shaft that intersects a projection optical axis of the projector main body; It is composed of a support frame rotatable about an orthogonal second axis, and one of the first and second axes is aligned with the traveling direction of the vehicle, and the other is aligned with the left-right direction of the vehicle orthogonal to the traveling direction. A vehicle display device, characterized in that the HUD projector is attached. 2. The HUD projector is mounted in a dashboard between a driver's seat and a passenger seat of a vehicle, and a display image of a display unit in the projector main body is projected obliquely on a wind seal. The vehicle display device according to claim 1.