JPH07223459A - Head-up display for automobile - Google Patents

Abstract

PURPOSE:To reduce the amount by which a visual line directed forward deviates from that for looking at a display during driving so as to reduce the amounts of movement of the visual lines during driving by enabling a head-up display to be easily installed by effective use of the interior space of the automobile without providing a special storage structure to accommodate an information projector inside the automobile. CONSTITUTION:An information projector K having both an optical information display means D and an optical member A by which a light beam emitted from the display screen of the means D is projected in a predetermined direction, and a combiner C by which the information-displaying beam projected form the information projector K is directed to a viewing position, are both supported by a supporting member 6 which can be attached to and removed from the inside of the automobile, the information projector K overlapping the rear-view mirror of the driver's seat with the combiner C located outside the side edge of the rear-view mirror.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head which, when a driver of a vehicle is driving while looking at the outside scene of the front, displays various information on the outside scene of the front as seen by the driver. Regarding up display. By using such a head-up display, it is not necessary for the driver to deviate from the outside world one by one to look at the instruments, and thus it is possible to prevent an accident that may occur while the eyes are distracted from the outside world.

[0002]

2. Description of the Related Art In the conventional head-up display for an automobile, an optical information display means such as a liquid crystal display, a CRT display, a plasma display or a light emitting diode display and light emitted from the optical information display means are incident on the combiner. And an information projection device having an optical member. Speed information, brake pressure information and the like are displayed on the display surface of the optical information display means. These pieces of display information are configured to be reflected or diffracted in the driver's direction after being incident on a combiner such as a half mirror arranged in front of the driver's visual field through the optical member. The combiner allows light rays emitted from the outside scene to be transmitted toward the driver.

[0003]

As a place for disposing the information projecting device of the conventional head-up display for automobiles, the inside of the dashboard of the automobile or the lower surface of the ceiling is considered. However, in order to arrange the conventional information projector of the automobile head-up display in the vehicle, it is necessary to provide a storage structure suitable for storing the information projector in the vehicle. Also, when using the windshield of an automobile as a combiner, the combiner and the information projection device are separate entities, so it takes time to align the optical axis, and a special coating is applied to the part of the windshield used as a combiner. There was also a problem that it had to be applied. Also, the lower part of the windshield is used as a combiner, and the display is made against the hood of the vehicle body. In this case, there is a problem in that there is a large deviation between the line of sight of the front gaze during driving and the line of sight when viewing the display, and the amount of movement of the line of sight becomes large.

In view of the above circumstances, the present invention provides the following (O0
The subject described in 1) and (O01) is the subject. (O01) A head-up display can be easily installed without effectively providing a special storage structure for storing an information projector in the vehicle by effectively utilizing the space in the vehicle interior. (O02) To reduce the shift between the line of sight of the front gaze while driving and the line of sight when viewing the display to reduce the movement of the line of sight during driving.

[0005]

The present invention devised to solve the above problems will now be described. The elements of the present invention are to facilitate correspondence with the elements of the embodiments described later. Note that the reference numerals of the elements of the embodiments are enclosed in parentheses. The reason why the present invention is described in association with the reference numerals of the embodiments described later is to facilitate the understanding of the present invention and not to limit the scope of the present invention to the embodiments.

(Invention) In order to solve the above-mentioned problems, an automobile head-up display (H) of the present invention comprises an optical information display means (D) having a display surface for displaying information and the display surface. An information projecting device (K) including an optical member (A) that projects the emitted information display light (L) in a predetermined direction, and a driver provided in front of the driver to see the outside scene in front. And a combiner (C) for transmitting the light rays from the outside from the front to the rear so that the information can be visually recognized and for directing the information display light (L) projected from the information projecting device (K) to the visual recognition position. An automotive head-up display (H) provided with the following requirements: (Y01) The information projecting device (K)
And that the combiner (C) is supported by the same support member (6), (Y02) the information projecting device (K) is arranged to overlap with the rearview mirror (2) of the driver's seat in the front-rear direction, and Room mirror (C) (2)
Placed outside the outer edge of.

(Embodiment 1 of the present invention) The embodiment 1 of the present invention is characterized in that the head up display (H) for an automobile of the present invention has the following requirement (Y001), (Y001 ) A smoke is placed on the front windshield in front of the combiner (C) to limit the transmission of external scene light.

[0008]

[Action]

(Operation of the present invention) Next, the operation of the present invention having the above-mentioned features will be described. In the automobile head-up display (H) of the present invention having the above-mentioned features, the information projector (K) supported by the support member (6) is arranged in the front-rear direction with the rearview mirror (2) of the driver's seat. They are placed one on top of the other. A combiner (C) supported by the support member (6)
Are arranged outside the outer edge of the rearview mirror (2). The position (space) adjacent to the room mirror (2) and overlapping with the room mirror (2) in the front-rear direction does not narrow the visual field necessary for driving even if the information projecting device (K) is arranged. The information display light (L) emitted from the display surface of the optical information display means (D) of the information projector (K) is projected in a predetermined direction by the optical member (A) of the information projector (K). To be done. The information display light (L) is incident on the combiner (C) provided outside the outer edge of the room mirror (2) in front of the driver.

The combiner (C) transmits light rays from the outside world from the front side to the rear side so that the driver can visually recognize the outside scene in front of the combiner (C), and the combiner (C) emits light from the information projecting device (K). The information display light (L) is directed to the visual recognition position. The driver can visually recognize the display information by looking in the direction of the combiner (C) arranged outside the outer edge of the room mirror (2). The position of the combiner (C) substantially coincides with the direction of the rearview mirror (2), and the deviation from the direction of the line of sight that gazes ahead while driving is small. Therefore, the scene in front of the vehicle and the display information can be visually recognized with a slight movement of the line of sight. Therefore, when visually recognizing the display information during driving, the time for which the line of sight is deviated from the scene in front is shortened, so that driving safety can be improved. The information projecting device (K)
Since the combiner (C) is supported by the same support member (6), the optical axis can be easily adjusted.

(Operation of Embodiment 1 of the Present Invention) In Embodiment 1 of the automobile head-up display (H) of the present invention, the external scene light incident on the upper part of the windshield in front of the combiner (C) is transmitted. Is limited, it is possible to prevent the display information from being difficult to visually recognize due to the brightness of the external scene light being too high.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the head-up display of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following embodiments. (Embodiment 1) FIG. 1 is an overall explanatory view of an automobile equipped with an automobile head-up display of Embodiment 1 of the present invention. FIG. 2 is a view showing an arrangement state inside the vehicle body of the first embodiment. FIG. 3 is an explanatory diagram of a method of mounting the head-up display for automobile of the first embodiment inside the vehicle body. Figure 4
FIG. 3 is an explanatory diagram of an internal structure of the first embodiment.

1, 2 and 3, an automobile head-up display H is arranged on the rear surface side (front side with respect to the vehicle body) of the rearview mirror 2 of the automobile 1. As can be seen from FIG. 3, a head-up display H for automobiles
Has a case 6, a connection connector 6a is provided on the upper surface of the case 6, and an opening 6b is provided on the right end surface. Further, locking tools 7, 7 are provided along the outer edge of the upper front side of the case 6. The locks 7, 7 are locked to the upper edge of the room mirror 2 from the back side of the room mirror 2.

In FIG. 4, inside the case 6 of the automobile head-up display H, a liquid crystal display panel 11 and a light source (not shown) are arranged on the back side thereof. The liquid crystal display panel 11 and a light source (not shown)
The optical information display means D is constituted by. Also,
On the rear surface side of the liquid crystal display panel 11, a display circuit 12 including a liquid crystal display panel 11 and a circuit board for driving a light source (not shown) is arranged. The display circuit 12 includes a signal transmission cable (not shown) in which signals from a vehicle speed sensor, an oil sensor, etc. (not shown) arranged on the vehicle body side of the vehicle are routed to a side wall and a ceiling of the vehicle body, and They are connected via a connecting connector 6a provided on the case 6. On the front side of the liquid crystal display panel 11, a lens system (optical member) A including a concave lens A1 and a convex lens A2 is arranged. An information projecting device K is composed of the optical information display means D and the lens system A. In addition, in FIG.
A transparent glass (not shown) is arranged in the opening 6b provided on the right end surface of the.

On the outside of the right end of the case 6, there is provided a combiner C for reflecting the information display light emitted from the opening 6b toward the driver and transmitting the external scene light incident from the outside. The combiner C is rotatably supported by the outer edge on the front side of the right end of the case 6 so that the rotational position can be adjusted. The case 6, the locking device 7,
7, the information projecting device K and the combiner C constitute a head-up display H.

(Operation of First Embodiment) Next, the operation of the first embodiment having the above-described structure will be described. Since the vehicle head-up display H is arranged so as to overlap the rearview mirror of the driver's seat in the front-rear direction, it does not narrow the field of view necessary for driving. The information display light L emitted from the display surface of the optical information display means D of the information projecting device K is projected in a predetermined direction by the lens system (optical member) A of the information projecting device K. The information display light L is incident on the combiner C provided outside the outer edge of the rearview mirror 2 in front of the driver.

The combiner C transmits the light rays from the outside from the front to the rear so that the driver can visually recognize the outside scene in front of the combiner C, and the information display light L emitted from the information projecting device K. To the visible position (driver's eye position). The driver can visually recognize the display information by looking at the direction of the combiner C arranged outside the outer edge of the room mirror 2. The position of the combiner C seen from the driver substantially coincides with the direction of the room mirror 2, and the deviation from the direction of the line of sight of the driver looking ahead while driving is small. Therefore, the scene in front of the vehicle and the display information can be visually recognized with a slight movement of the line of sight.
Therefore, when visually recognizing the display information during driving, the time for which the line of sight is deviated from the scene in front is shortened, so that driving safety can be improved. Further, since the room mirror 2 is close to the driver's eyes, the combiner C arranged near the room mirror 2 allows the driver to visually recognize a relatively large display image even if the combiner C has a small area.

(Embodiment 2) Next, Embodiment 2 of the head-up display for automobiles of the present invention will be described with reference to FIG. In the description of the second embodiment, constituent elements corresponding to those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The second embodiment differs from the first embodiment in the following points, but is configured similarly to the first embodiment in other points. (S01) In the first embodiment, the head-up display H for an automobile is provided with the fasteners 7, 7 along the outer edge of the upper front side of the case 6, so that the rear side of the rear-view mirror 2 is positioned above the rear-view mirror 2. While the vehicle head-up display H of the second embodiment is locked to the edge, the locking tools 7 and 7 are provided along the outer edge of the upper rear side of the case 6.
Is provided and is locked to the upper edge of the room mirror 2 from the front surface side of the room mirror 2. (S02) The side of the case 6 facing the driver is a mirror surface so that it can be used as a rearview mirror. The second embodiment also has the same operation as the first embodiment.

(Modifications) Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, but is within the scope of the gist of the present invention described in the claims. Thus, various changes can be made. A modified embodiment of the present invention is illustrated below.

(H01) As shown in FIG. 6, it is possible to make the displayed information easy to see by putting smoke on the upper part of the windshield to reduce the external light brightness on the upper part of the windshield.

[0020]

The X of the present invention described above can exert the following effects. (E01) The head-up display can be easily installed by effectively utilizing the space in the vehicle compartment and without providing a special storage structure for storing the information projector in the vehicle. (E02) The shift between the line of sight of the front gaze during driving and the line of sight when viewing the display can be reduced to reduce the movement of the line of sight during driving.

[Brief description of drawings]

FIG. 1 is an overall explanatory diagram of an automobile equipped with an automobile head-up display according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an arrangement state inside a vehicle body according to the first embodiment.

FIG. 3 is an explanatory diagram of a method of mounting the automobile head-up display of the first embodiment inside a vehicle body.

FIG. 4 is an explanatory diagram of an internal structure of the first embodiment.

FIG. 5 is an explanatory diagram of an automobile head-up display according to a second embodiment of the present invention.

FIG. 6 is an explanatory view of a modified embodiment of the automobile head-up display of the present invention.

[Explanation of symbols]

A ... Optical member, C ... Combiner, D ... Optical information display means, H ... Automotive head-up display, K ... Information projector, L ... Information display light, 2 ... Room mirror,

Claims (1)

[Claims] 1. An information projecting device comprising: an optical information display means having a display surface for displaying information; and an optical member for projecting information display light emitted from the display surface in a predetermined direction. It is provided in front of the hand and transmits the light rays from the outside from the front to the rear so that the driver can visually recognize the scene of the outside world in the front, and the information display light projected from the information projecting device is visible. In a head-up display for automobiles that has a combiner that directs
An automotive head-up display characterized by having the following requirements: (Y01) The information projecting device and the combiner are supported by the same supporting member.
02) The information projecting device is arranged to overlap with the rearview mirror of the driver's seat in the front-rear direction, and the combiner is arranged outside the outer edge of the rearview mirror.