JP2659026B2 - Vehicle head-up display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention 1) Field of Industrial Use The present invention relates to a technique in which a pilot of an aircraft, a ship, a land vehicle, or the like operates while looking at a scene in front of the outside world. The present invention relates to a head-up display that superimposes and displays various kinds of information on an external scene in front of the viewer.

The use of such a head-up display eliminates the need for the driver to look away at the instruments from the outside world one by one, thereby preventing an accident that may occur while the driver is looking away from the outside world.

1) Conventional technology The conventional head-up display H is generally the fifth type.
As illustrated in the figure, a combiner C such as a half mirror or a hologram element is arranged in front of the field of view of the pilot P, and the combiner transmits a light beam J emitted from an external scene in the direction of the pilot P and controls the cockpit. The information display light X incident on the combiner C from the information light projecting device K is reflected or diffracted in the direction of the pilot P. The information projection device K for causing the information display light X to enter the combiner C is an optical information display means D (or CR) comprising a transmission type liquid crystal display panel D1 and a light source D2.
T, optical information display means such as a plasma display, a light emitting diode display, etc.), an optical member A for causing light emitted from the optical information display means D to enter the combiner C, and a housing B for accommodating them. ing. And, the optical member A is usually composed of lenses A1 and A2.
And a reflecting mirror A3, etc., so that the information display light X can be visually recognized by the pilot P in the front view.

3) Problems to be Solved by the Invention By the way, since the pilot visually recognizes the external scene, the information displayed on the display surface of the optical information display means is close to the eyes (not far away). ) Greatly changes the focus of the eye when viewing the external scene and display information. Then, it becomes difficult to visually recognize the scene and the information, and the eyes are easily tired. Therefore, when the information displayed on the optical information display means is visually recognized by a driver, a device which is visually recognized by a lens system of the optical member is often used. Such an eye is easy on the eyes, but the position of the eyes where the information displayed on the display surface can be visually recognized is limited to a very narrow range.

On the other hand, pilots have different eye heights due to individual differences such as sitting height. Therefore, in the head-up display in which the position of the eyes from which information can be viewed is limited to a narrow range as described above, when the height of the pilot seat cannot be adjusted, the pilot
There is a problem that the information cannot be sufficiently visually recognized while sitting on the pilot seat.

In addition, when a head-up display mounted on an aircraft, a ship, a land vehicle, or the like is always disposed in front of a cockpit, when the head-up display is not used, it may be an obstacle.

In view of the above-described problem, the present invention enables the information displayed on the display surface to be visually recognized by the driver even when the height position of the driver's eyes is different, and when the head-up display is not used. Aims to store it out of the way.

B. Configuration of the Invention 1) Means for Solving the Problems In order to solve the above problems, a vehicle head-up display according to the present invention includes an optical information display unit having a display surface on which information is displayed, and the display surface. An information projection device having an optical member for projecting information display light emitted from the device in a predetermined direction, and an information projection device housing for accommodating the information display light; Combiner that transmits the light from the outside to the rear so that the driver can visually recognize the scene of the vehicle, and reflects or diffracts the information display light projected from the information light projecting device in a direction that the driver can visually recognize. A head-up display for a vehicle, comprising: a fixed frame detachably attached to the information projection device housing; And a movable frame supported by the movable frame, wherein the combiner is rotatably supported by the movable frame between a use position and a storage position.

2) Operation In the head-up display according to the present invention having the above-described configuration, the operator adjusts the movement of the moving frame in the front-rear direction while rotating the combiner to the use position, thereby emitting the information. The direction of projection of the information display light projected from the device can be directed to the user's eyes.

That is, when the combiner moves in the front-rear direction while maintaining the same posture, the height of the incident position of the information display light to the combiner changes, and the height of the information display light reflected by the combiner and directed to the steering changes. . At that time, the information display light traveling from the combiner to the operator is parallel even if the height changes.

For this reason, even if the front-back position of the combiner changes, the pilots having various eye heights can visually recognize the information display light in the same direction distant from the front.

3) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a view (front view) of the head-up display H arranged in front of the pilot as viewed from the pilot side, and FIG. 2 is a view (side view) of the head-up display H viewed from an arrow II in FIG. . 1 and 2, a housing B of the information light emitting device K is shown.
Although not shown, a conventionally known optical information display means and an optical member for projecting optical information displayed by the optical information display means toward a combiner C described later are arranged therein.

A fixed frame 1 shown in FIG. 3 is detachably mounted on the lower surface of the housing B for information light projecting device through mounting bolt holes 2, 2,. Rails extending forward and backward on both sides of the fixed frame 1
3,3 and positioning plates 4,4 are supported. The positioning plates 4, 4 are provided with a large number of positioning holes 4a, 4a,.

A rotating member 6 is supported on the upper surface of the front portion of the fixed frame 1 so as to be rotatable around a shaft 5. A weight support shaft 7 is fixed to the rotating member 6. A weight 8 is fixed to the weight support shaft 7 so that the position can be adjusted. This weight 8 is a head-up display H
When the vehicle on which the vehicle is mounted suddenly stops, for example, when a sudden deceleration is applied, the vehicle moves forward to move the rotating member 6 and the weight support shaft support shaft 7 counterclockwise around the shaft 5 (third direction). (In the figure). At this time, the weight supporting shaft 7 has an appropriate resistance only at the start of rotation, and slides without resistance after the start of rotation.
It is configured to be guided to. Such a guide 9 is obtained, for example, by forming a friction surface or a projection at the rotation start position of the weight support shaft so as to provide resistance to the slide when it slides.

The rails 3, 3 support a moving frame 10 that is adjusted to move back and forth along the rails 3, 3. Moving frame
The handle 10 supports a moving operation handle 11, a positioning lever 12 rotatably supported by the moving operation handle 11, and a pair of positioning pin units 13, 13.
As shown in FIGS. 3 and 4, the positioning pin unit 13 includes a cylindrical member 13a, a positioning pin 13b slidably supported in the cylindrical member 13a, and a tip of the positioning pin 13b. A spring 13c pressing toward the positioning hole 4a, the cylindrical member 13a and the positioning pin
A plate-like cam member 1 inserted into a slit formed in 13b
3d. A rod 14 is connected to the cam member 13d, and the rod 14 is always held at a position shown in FIG. And
In the lock position shown in FIG.
The tip of b is fitted in the positioning hole 4a, and the moving frame 10 is fixed to the fixed frame 1.

As shown in FIG. 4, the positioning pin units 13, 1
The rod 14 connected to one of the three (upper in FIG. 4) cam members 13d is directly connected to the positioning lever 12, and is connected to the other (lower in FIG. 4) cam member 13d. The rod 14 is connected to the positioning lever 12 via a wire 16.
It is connected to. Then, when the positioning lever 12 is operated to pull the rods 14, 14 against the spring 15,
The cam members 13d, 13d move to move the positioning pins 13b, 1
3b comes off from the positioning holes 4a, 4a. In this detached state, the operator can move the moving frame 10 along the rods 3, 3 by holding the moving operation handle 11. When the positioning lever 12 is released at an appropriate position, the positioning pin 13b is released at that position.
Are fitted in the positioning holes 4a, and the moving frame 10 is fixed at that position.

At the front end (the left end in FIGS. 2 and 3) of the moving frame 10, left and right (up and down in FIG. 3) guide rotating members 17, 17 are supported so as to be rotatable around the axis L. ing. The guide rotating member 17 includes an arm 18 and the arm
An arc-shaped guide support portion 19 provided at the tip of 18, and an arc-shaped guide portion provided along the guide support portion 19
20 and. A locking groove 19a is formed in the guide support portion 19, and a locking groove 20a for a combiner use position and a lock groove 20b for a combiner storage position are formed in the guide portion 20. As shown in FIG. 2, a locking piece 22 at the distal end of a rod 21 supported movably back and forth by the moving frame 10 is normally engaged with the locking groove 19a. The rod 21 is constantly pressed by a spring 23 in a direction in which the locking piece 22 is engaged with the locking groove 19a. Therefore, the guide rotating member 17 is normally held at the position shown by the solid line in FIG. The rod 21 is connected to a wire 24
When the weight 8 moves forward and the rotating member 6 is rotated, the rod 21 is pulled via the wire 24 and the locking piece is 22 is configured to be detached from the locking groove 19a. Further, between the guide rotating member 17 and the moving member 10, a compression spring 25 for flipping up is arranged. The flip-up compression spring 25 acts to hold the guide rotating member 17 at the position shown by the solid line in FIG. 2 in the state shown by the solid line in FIG. However, a sudden deceleration occurs in the vehicle, the locking piece 22 is disengaged from the locking groove, and the guide rotating member 6 is slightly rotated clockwise in FIG. 2 due to its own inertia and the like. When moved, the spring 23
Acts to further rotate the guide rotation member 17.

As shown in FIG. 3, the movable frame 10 is rotatable around the axis L outside the guide rotating members 17, 17 supported on the left and right sides (up and down in FIG. 3) of the front end. A combiner support member 26 is supported. The combiner support member 26 holds the combiner C and has an engagement member 27 that is guided by the arc-shaped guide portion 20 of the guide rotation member 17. The engagement member 27 is provided with a rotation position regulating rod 29 constantly pressed in the direction of the axis L by a compression spring 28. The rotation position regulation rod 29 is provided with the guide member 20. Locking grooves 20a, 20
A locking piece (not shown) is provided to be selectively engaged with any one of b. The engaging piece (not shown) is engaged with the engaging groove 20a for the combiner use position in the solid line state of FIG. 2, that is, in the use position of the combiner C, and in the storage position of the combiner C, It is designed to engage with the stop groove 20b. These engagements can be released by pushing the rotation position regulating rod 29 against the compression spring 28.

Next, the operation of the embodiment having the above configuration will be described.

In order to move and adjust the moving frame 10 located at the solid line position in FIG. 2 in the front-rear direction (the left-right direction in FIG. 2), the positioning lever 12 is turned to rotate the rod 14 and the cam member.
Move 13d. Then, the positioning pin 13b is separated from the positioning hole 4a, and the moving frame 10 can freely move along the rods 3,3. Therefore,
The operator or the operator holds the moving operation handle 11 to move the moving frame 10 along the rods 3,3. Then, the positioning lever 12 is released at an appropriate position, and the positioning pin 13b is fitted into the positioning hole 4a at that position. By adjusting the movement of the moving frame in this manner, the height of the incident position of the information display hole that is projected from the information light projecting device K and enters the combiner C can be changed.
The vertical position of the information display hole reflected from the projector in the light projection direction can be adjusted. At that time, the inclination posture of the combiner C and the incident direction of the information display light to the combiner C do not change, so that the information display light directed to the operator's eyes is parallel regardless of the eye height.

The guide rotating member 17 and the combiner supporting member 26 indicated by solid lines in FIG. 2 are held at the combiner use position, and the combiner C is moved to the horizontal combiner storage position (see C ′ in FIG. 2). ), The turning position regulating rod 29 is pressed against the compression spring 28, and a locking piece (not shown) provided on the turning position regulating rod 29 is moved to the combiner use position. From the locking groove 20a. Then, the combiner support member 26 is rotated along the guide member 20 to a horizontal combiner storage position (see C 'in FIG. 2). Then, when the pressing of the rotation position regulating rod 29 is released in the combiner storage position, the locking pieces (not shown) of the rotation position restriction rod 29 are engaged with the combiner storage position locking groove 20b. Engage,
The combiner C is held at the storage position. When a large deceleration is generated in the vehicle while the combiner C is held in the storage position, the weight 8 moves forward and the rotating member 6 rotates, and the rod 21 is moved through the wire 24. When pulled, the locking piece 22 is separated from the locking groove 19a. However, since the guide rotation member 17 and the combiner support member 26 are located at the storage positions, these members
2, no clockwise rotation moment is generated in FIGS. Therefore, those members 17, 26 remain held in the storage position, and the compression vane 25 also moves the members 17, 26.
In the storage position.

However, in a state where the guide rotation member 17 and the combiner support member 26 are held at the combiner use position shown by the solid line in FIG. 2, when the vehicle experiences a large deceleration, the weight 8 moves forward. Rotating member 6
Is rotated, the rod 21 is pulled through the wire 24, and the locking piece 22 is separated from the locking groove 19a. At this time, the guide turning member 17 and the combiner support member 26 generate a clockwise turning moment in FIG. 2 due to their own weight and inertia, and the members 17 and 26 turn clockwise. . Then, the compression spring 25 is connected to the member 17,
26 is rotated clockwise about the axis L. Then, the combiner C rotates to the flip-up position C ″ in FIG. 2. As described above, if the combiner C is automatically jumped up when a sudden deceleration occurs in the vehicle, the speed of the vehicle is increased. Even if the pilot's body moves forward (even if it is pulled) during a slow deceleration, the body is less likely to be damaged.

As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

For example, the present invention can omit a mechanism for jumping up the combiner when a sudden deceleration occurs in the vehicle.

C. Effects of the Invention In the head-up display of the present invention having the above-described configuration, the operator adjusts the position of the moving frame in the front-rear direction to adjust the position of the moving frame in the front-rear direction. The direction of light projection can be directed to one's eyes. At this time, even if the heights of the eyes of the pilots are different, the directions of the information display light incident on the eyes of the pilots are parallel. The information display light can be visually recognized.

Further, when the combiner is not used, the posture of the combiner is rotationally adjusted and held at the storage position, so that the combiner is not obstructed.

[Brief description of the drawings]

FIG. 1 is a view (front view) of the head-up display arranged in front of the pilot as seen from the pilot side, and FIG.
FIG. 3 is a plan view of a main part of the embodiment, FIG. 4 is an explanatory view of a moving frame positioning mechanism of the embodiment, and FIG. 5 is the present invention. 1 is a schematic explanatory diagram of a head-up display to which is applied. B: housing for the information projector, C: combiner,
K: information light emitting device, 1: fixed frame, 10: moving frame,

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shozaburo Udatsu 26, Nishinokyo Shimoai-cho, Nakagyo-ku, Kyoto-shi, Kyoto Inside Kyoto Engineering Co., Ltd. (56) References JP-A-62-137236 (JP, A)

Claims (1)

(57) [Claims] An optical information display means having a display surface on which information is displayed, an optical member for projecting information display light emitted from the display surface in a predetermined direction, and a housing for an information light projecting device accommodating them. And an information projection device having an inclination in front of the operator, and transmitting light from the outside to the rear so that the operator can visually recognize the scene of the outside in front of the information projection device. In a vehicle head-up display comprising a combiner for reflecting or diffracting information display light projected from an optical device in a direction in which a driver can visually recognize the information display light, a fixed frame detachably mounted on the information projecting device housing. And a movable frame supported on the fixed frame so as to be movable in the front-rear direction, and the combiner is turned to the movable frame between a use position and a storage position. Adjustably supported vehicle head-up display, characterized in that the.