JPH086591Y2 - Body end indicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention utilizes a head-up display to form a virtual image as an instruction mark at a position in front of the windshield of a vehicle in front of the windshield of the vehicle. The present invention relates to a vehicle body end portion indicating device for instructing a driver about a tip portion or the like.

[Prior Art] Conventionally, a head-up display is used to form a virtual image such as a display pattern in the windshield of a vehicle so that the driver can drive the vehicle at a high speed without removing his or her line of sight from the windshield during driving. There has been proposed a display device capable of visually recognizing information.

By the way, it is necessary to take care so that the vehicle does not come into contact with obstacles when putting the vehicle in the garage or traveling on a narrow road, but in such a case it is easy to visually check the distance between the vehicle and the obstacle. In order to achieve this, as shown in FIG. 6, there has been proposed a technique in which a head-up display technology is used to display a virtual image of a front end mark near the front end of the vehicle (Japanese Patent Laid-Open No. 62-62160). -34824).

In the device shown in the figure, when the driver turns on the switch 5, the lamp 61 (Fig. 7) in the tip mark display body 6 is turned on, and the light from the tip mark display body 6 is at points A, B, and C. After being reflected, it reaches the driver's eye E through point D of the windshield 7. Then, the optical path length of this light and the distance from the driver to the front left end of the vehicle are matched, and the driver sees the front end mark display image 64b in the same distance and in the same direction as the front end of the vehicle. The mark display image 64d and the obstacle in that direction are overlapped so that the distances can be compared.

[Problems to be solved by the device]

The tip mark display 6 in the above conventional device is
As shown in the figure, the lamp 61 is arranged in the case 62, and a tip mark 64a of a semi-transmissive pattern is formed on the display plate 63 on the side of the case 62, and when the lamp 61 is turned on, the tip mark 64a portion emits light. It is a thing. Therefore, the tip mark display image 64b visible to the driver is a virtual image with the plane facing the driver.

However, in the case where the driver visually recognizes the virtual image of the plane as described above, the distance to the tip mark display image 64b cannot be grasped instantly, and the obstacle and the tip mark display image cannot be grasped.
It is difficult to compare the distance with 64b in a short time. For example, when an obstacle comes near the tip mark display image, there is a problem that it is difficult to grasp the front-back relationship. In addition, such problems, as seen in recent vehicles,
This is especially noticeable in vehicles where the hood cannot be seen by the driver.

The present invention uses a virtual image as an instruction mark at a position in front of the windshield within the field of view of the vehicle windshield to indicate to the driver the tip of the vehicle body or the like. It is an object of the present invention to make it easier for the driver to recognize the position of the virtual image of and to easily confirm the tip end portion of the vehicle.

[Means and Actions for Solving the Problems]

The vehicle body end portion pointing device of the present invention made to solve the above-mentioned problems is provided at a predetermined image-forming position on the front side of the vehicle with respect to the windshield of the vehicle, at least in the direction toward the viewpoint position on the driver's side. A vehicle body end portion indicating device configured to indicate an end portion of a vehicle body within a field of view of a windshield seen from a driver's seat by forming a virtual image which is a set of a plurality of images positioned apart from each other. A plurality of light emitters corresponding to the images of the plurality of light emitters, and a virtual image of a part of the plurality of light emitters through an optical magnifying means, and a distance separated in a direction toward the viewpoint position of the plurality of virtual images. The feature is that it is enlarged.

In the vehicle body end pointing device according to the present invention, the virtual image formed at the preset image forming position on the front side of the vehicle body with respect to the windshield is composed of a plurality of images spaced at least in the direction toward the viewpoint position on the driver's seat side. Since it is a set of, the distance can be easily grasped by the parallax between the left and right eyes of the driver.

Further, a plurality of light emitters corresponding to the plurality of images are provided, and a part of the light emitters of the plurality of light emitters is made into a virtual image through an optical enlarging means, and is separated in a direction toward a viewpoint position of the plurality of virtual images. Since the distance is increased, the configuration is suitable for increasing the distance of the virtual image and making it easier to grasp the distance without increasing the space for housing the light emitter.

〔Example〕

FIG. 1 (a) is a side view showing a vehicle body end portion indicating device of an embodiment of the present invention, and FIG. 1 (b) is a top view thereof.

In the figure, 2 is a display unit which is arranged on a vehicle compartment ceiling 50 to display an instruction mark as a virtual image, 10 is a vehicle windshield, 20 is a hood, 30 is a bumper at the tip of the hood 20, and 40 is a dash. The board and E are the viewpoints on the driver's side. Reference numeral 60 denotes a combiner such as a half mirror arranged on the dashboard 40.

The display unit 2 emits light for forming a virtual image as an instruction mark, which will be described later, and this light is reflected by the combiner 60 toward the driver's seat side, and the combiner 60 is viewed from the viewpoint E on the driver's seat side or its vicinity. As a result, the virtual image X of the instruction mark is visually recognized.

2 (a) is an assembly state diagram of the display unit 2, and FIG. 2 (b) is an exploded perspective view thereof. As shown, the case of the display unit 2 is the front case 21 on the side facing the combiner 60, The front case 21 is divided into a central middle case 22 and a rear rear case 23. The front case 21 is formed with a large opening 21a in the center and two narrow openings 21b, 21c on both sides thereof. Inside the case, the first cathode tube 24b and the second cathode tube 24c are housed facing the narrow openings 21b, 21c on both sides of the front case 21, respectively, and behind the lens 25 is an optical magnifying means. Further, third cathode tubes 24a are housed on the rear case 23 side, respectively.

The light from the first cathode tube 24b and the light from the second cathode tube 24c are directed to the combiner 60 via the openings 21b and 21c, respectively, and the light from the third cathode tube 24c is directed to the lens 25 and the opening 21a.
Is directed to combiner 60 via.

Here, as shown in FIGS. 1 (a) and (b), the distance l ₁ ′ from the combiner 60 to the virtual image Xb of the first cathode tube 24b and the virtual image Xc of the second cathode tube 24c is from the combiner 60 to The virtual image Xb, Xc is formed at a position closer to the bonnet 20 than the bumper 30 in accordance with the distance l ₁ between the first cathode tube 24b and the second cathode tube 24c. Meanwhile, from the combiner 60 to the third cathode tube 24
The distance l ₂ ′ from the virtual image Xa of a to the third
The distance l ₂ to the cathode tube 24a is added to the distance corresponding to the enlargement by the lens 25, and the position of this virtual image Xa is formed above the bumper 30 at the left front end of the vehicle.

The position of the virtual image Xa is adjusted by the magnification of the lens 25 so as to be at the vehicle left front end portion.

The virtual image Xb of the first cathode tube 24b and the virtual image Xc of the second cathode tube 24c are the lines L connecting the virtual image Xa of the third cathode tube 24a and the viewpoint E.
Will be located on both sides of.

In this way, the three virtual images Xa, Xb, and Xc form an image with a depth in the direction toward the viewpoint, so that the driver can stereoscopically see the mutual relationship of each virtual image and easily grasp the position of each virtual image. it can.

Also, when the viewpoint moves due to the shake of the driver's head, the positional relationship between the virtual images Xa, Xb, and Xc changes as shown in FIG. That is, when viewed at the midpoint, the same figure (a)
If the virtual image Xa appears in the center of the virtual images Xb and Xc and the viewpoint shifts to the right, the virtual image Xa looks biased to the virtual image Xb side as shown in FIG. , The virtual image Xa looks biased toward the virtual image Xc side as shown in FIG.

Therefore, the position of each virtual image can be more easily grasped by using the shake of the driver's head, and the position of the virtual image Xa formed above the bumper 30 at the front end portion of the vehicle left can be confirmed by checking the position of the vehicle left side. The position of the front end can be easily confirmed.

Further, such an effect becomes more remarkable as the distance between the virtual image Xa and the virtual image Xb (and the virtual image Xc) becomes larger, but since the virtual image of the third cathode tube 24a is formed via the lens 25, Even if the actual distance between the third cathode tube 24a and the first cathode tube 24b (and the second cathode tube 24c) is not increased, this virtual image X
The distance between a and the virtual image Xb (and the virtual image Xc) can be increased.

In the above embodiment, since the cathode tube is used as the light emitter, the cathode tube itself is a three-dimensional light emitter, which makes it easier to grasp the position of the virtual image. Even if a display such as a liquid crystal display (LCD) with a light is used, it may be arranged so that a depth can be formed in the positional relationship of a plurality of virtual imagers such as the cathode tube.

FIG. 4 is a perspective view showing another example of the display unit of the above embodiment, in which the case is shown by an imaginary line. In this display unit 2 ', a third cathode tube 24a' is arranged at a right angle to the first cathode tube 24b 'and the second cathode tube 24c', and an optical magnifying means is used instead of the lens 25 in the display unit 2. A spherical mirror 25 'is arranged, and the position of the virtual image Xa is adjusted by the magnification of the spherical mirror 25'.

In the above embodiment, the display unit 2 or 2'is arranged on the vehicle ceiling 50, and the virtual image as the instruction mark by the display unit 2 or 2'is reflected by the combiner 60 to the driver's seat side. For example, as shown in FIG. 5, a display unit 2 ″ is arranged on the dashboard 40, and a virtual image as an instruction mark by the display unit 2 ″ is reflected by the windshield 10 toward the driver's seat side, Viewpoint E
Alternatively, the virtual image X of the instruction mark may be visually recognized by looking at the windshield 10 from the vicinity thereof.

[Effect of device]

As described above, according to the vehicle body end portion pointing device of the present invention, the driver is instructed to the tip portion of the vehicle body or the like by forming a virtual image as an instruction mark at a position in front of the windshield within the windshield of the vehicle. In the vehicle body end pointing device thus configured, a set of a plurality of images located at a predetermined imaging position on the front side of the vehicle from the windshield of the vehicle at a distance at least in the direction toward the viewpoint position on the driver's seat side. Is formed into a virtual image through an optical magnifying means for some of the plurality of light emitters corresponding to the plurality of images, and the plurality of light emitters are separated in the direction toward the viewpoint position of the plurality of virtual images. I tried to increase the distance,
As an instruction mark indicating the end of the vehicle body, the driver can easily recognize the position of the virtual image, and the tip portion of the vehicle body or the like can be easily confirmed. Further, the configuration is suitable for expanding the distance of the virtual image and making it easier to grasp the distance without increasing the space for accommodating the plurality of light emitters corresponding to the plurality of images.

[Brief description of drawings]

FIG. 1 is a side view and a top view showing a vehicle body end pointing device of an embodiment of the present invention, a side view showing a vehicle body end pointing device of a first embodiment of the present invention, and FIG. 2 shows a display unit in the embodiment. FIG. 3 is a diagram showing a change in appearance of a virtual image due to movement of a viewpoint in the embodiment, FIG. 4 is a perspective view showing another example of a display unit in the embodiment, and FIG. 5 is a vehicle body end in the embodiment. FIGS. 6 and 7 are views showing an example in which a windshield is used for a section indicating device, and FIGS. 6 and 7 are views showing a conventional example according to the present invention. 2,2 ', 2 "... Display unit, 24a, 24b, 24c ... Cathode tube, 25 ...
Lens, 25 '... Spherical mirror, 10 ... Windshield, 20 ... Bonnet, 30 ... Bumper, 60 ... Combiner, E ... Viewpoint,
X ... virtual image.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiro Itami 1500 Onjuku, Susono-shi, Shizuoka Prefecture, Yazaki Sogyo Co., Ltd. Kai 63-164038 (JP, U) Special Table 1-502457 (JP, A)

Claims (4)

[Scope of utility model registration request] 1. A virtual image, which is a set of a plurality of images, is formed at a preset imaging position on the front side of the vehicle body with respect to the windshield of the vehicle and is spaced at least in the direction toward the viewpoint position on the driver's seat side. A vehicle body end portion pointing device for pointing the end portion of the vehicle body within the field of view of the windshield as seen from the driver's seat, comprising a plurality of light emitters corresponding to the plurality of images, A body end indicator device characterized in that a part of the luminous bodies is made into a virtual image through an optical magnifying means, and a distance separated in a direction toward a viewpoint position of the plurality of virtual images is enlarged. . 2. The vehicle body according to claim 1, wherein the virtual image is formed by reflecting light from the light emitting body toward a driver seat side by a light transmissive reflective surface in front of the driver seat. Edge pointing device. 3. The vehicle body end portion pointing device according to claim 2, wherein the light transmissive reflective surface is an inner surface of the windshield. 4. The vehicle body end portion pointing device according to claim 2, wherein the light transmissive reflecting surface is a combiner provided in front of the windshield.