JPH0653474B2 - Dazzling light alarm display device for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses a hologram capable of recording a display pattern as three-dimensional information to a driver of another vehicle, such as a following vehicle or an oncoming vehicle, in front of the other vehicle. The present invention relates to a vehicle dazzling light warning display device that warns that a lamp (headlight) is in a dazzling light state such as a high beam.

[Conventional technology]

2. Description of the Related Art In a general vehicle, a display lamp indicating a high beam state is provided on a display unit of meters to inform a driver that the headlight of the vehicle is in an upward dazzling state (high beam state).

[Problems to be solved by the invention]

However, even if the host vehicle is in the high beam state, there are cases where the driver may travel without noticing this display,
The high beam may enter the eyes of a driver of another vehicle such as an oncoming vehicle or a vehicle traveling in front, and the driver may be dazzled and the visibility of the front may be significantly reduced, which may hinder driving. In such a case, when the oncoming vehicle has a high beam, this can be notified by passing (an action of temporarily switching the headlight of the own vehicle from a low beam to a high beam to notify the other party).

However, there are many drivers who do not notice that their vehicle is in a high beam state even if they receive passing.
Further, for example, when the following traveling vehicle is in the high beam state, there is a problem that there is no means for informing the following vehicle from the vehicle traveling in front of the fact that the following vehicle is in the high beam state.

The present invention has been made in view of the above problems, and uses the dazzling light of a headlight of another vehicle such as an oncoming vehicle or a following vehicle to notify a driver of the other vehicle that the vehicle is in a dazzling light state. An object of the present invention is to provide a dazzling light alarm display device for a vehicle.

[Means for solving problems]

In order to achieve the above object, the present invention records a display pattern for displaying that a headlight of another vehicle such as a following vehicle is in a dazzling light state as three-dimensional information so as to be reproduced by the headlight light. When the hologram member and the headlight of another vehicle are in the non-dazzling light state, the light of the headlight is not emitted, and when the headlight of the other vehicle is in the dazzling light state, the light of the headlight is emitted. And a vehicle body having the hologram member mounted thereon.

[Operation and effect of the invention]

According to the above configuration of the present invention, when the other vehicle is in the dazzling light state, the dazzling light is emitted to the hologram member. The hologram member reproduces the display pattern previously recorded by using the dazzling light as reproduction light. The display pattern is imaged and reproduced as a three-dimensional virtual image in the field of view of the driver of the other vehicle, so that the driver of the other vehicle recognizes that he or she is driving in the dazzling light state and shifts to the non-dazzling light state. Can be promoted. By using the three-dimensional virtual image reproduced by the hologram member in this way, it is possible to easily warn that the following vehicle or the like is in the dazzling light state.

〔Example〕

An embodiment of the device of the present invention will be described below by applying it to a rear window of a vehicle.

In FIG. 1, reference numeral 1 is a vehicle body, 2 is a rear window glass thereof, 3 is a hologram dry plate mounted on the central upper portion of the rear window glass 2, and 4 is a rear spoiler provided on the upper portion of the trunk. Further, reference numeral 5 in the drawing denotes an irradiation light area of the headlight light when the headlight of the following vehicle is in the high beam state, and reference numeral 6 similarly denotes an irradiation light area of the headlight light in the low beam state.

The hologram dry plate 1 is mounted at a position outside the irradiation light region 6 in the low beam state and in a position included in the irradiation light region 7 in the high beam state. The hologram dry plate 3 is a dry plate made of a photosensitive material such as dichromated gelatin.
As shown in FIG. 4, the emulsion surface 3a is exposed to the ultraviolet cut film 3
It is adhered to the rear window glass 2 from inside the vehicle via b. Here, the adhesive was applied from the inside of the vehicle in consideration of durability and the like, but as shown in FIG. 5, the hologram dry plate 3 was placed so that the ultraviolet cut film 3 was on the outside and the emulsion surface 3a was on the inside.
May be adhered. In this way, the hologram dry plate 3 is protected from ultraviolet rays from the outside of the vehicle by the ultraviolet ray cut film 3b, and the emulsion surface 3a has a closed structure so as not to come into contact with the outside air, so that durability is secured. If necessary, the rear window glass 2 may be provided with a non-reflective coating.

On the hologram plate 3, the three-dimensional information of the display pattern is recorded by the optical system arrangement shown in FIG. A laser beam I from a laser (not shown) is transmitted through the lenses 10 and 11, the transmission scatterer 12, and the pattern plate 13 on which the display pattern of the alarm display content is printed, and the hologram dry plate 3 as object light.
The laser light II is emitted as reference light through the lens 14. The pattern plate 13 is a translucent plate on which a warning display pattern such as "Be careful of high beam!" Is printed. Here, the arrangement angle α of the hologram dry plate 3 with respect to the reference line 1 is set to be substantially equal to the attachment angle with respect to the horizontal plane when the hologram dry plate 3 is attached to the rear window 2, and the light of the laser beam II with respect to the reference line l. The angle β formed by the axis m is set substantially equal to the elevation angle formed by the optical axis of the high beam light with respect to the horizontal plane. Also laser light I
An optical element is adjusted and arranged so that the optical axis n of is along the line-of-sight direction of the driver of the following vehicle.

Next, the operation will be described based on the above configuration.

As shown in FIG. 2, when the following vehicle A is in the low beam light 8 state, the headlight light is not applied to the hologram dry plate 3 but is applied to the irradiation light region 6 therebelow. When the hologram dry plate 1 is not irradiated with light, the hologram dry plate 1 has a transmittance similar to that of ordinary transparent glass, and therefore does not hinder the rear view of the driver of the front vehicle B.

Here, when the following vehicle A is in the high beam light 9 state, the headlight light is emitted to the upper irradiation light region 5 including the hologram dry plate 3. When the hologram dry plate 1 is irradiated with the high beam light 9, the display pattern recorded as described above is reproduced as a three-dimensional virtual image in the visual field of the driver of the following vehicle A. FIG. 1 shows a virtual image “Caution of high beam!” 7. Thus, the driver of the following vehicle A can be made aware that the host vehicle is in the high beam state, and the driver can be prompted to switch to the low beam state.

Explaining further with reference to FIG. 3, here, when the high beam light 9 from the following vehicle (A) is applied to the rear window glass 2 of the front vehicle B at an elevation angle β with respect to the horizontal plane, the rear window glass 2 The surface reflection is reflected out of the visual field (upward) of the driver of the following vehicle (A). On the other hand, with respect to the light incident on the hologram dry plate 3, the light in the specific wavelength region is diffracted backward due to the diffracting action, and the virtual image 7 of the specific color is reproduced. The virtual image 7 is preferably a color tone or position such as red or blue that easily attracts the driver's attention.
Optical system layout, recording method,
It can be changed by development processing or the like.

Although the hologram dry plate was used in the above embodiment,
A similar hologram film may be used. Further, it goes without saying that the hologram dry plate can also be mounted on a side window, a front window, a rear spoiler or the like in addition to the rear window to similarly warn a high beam state of a side vehicle, an oncoming vehicle or the like.

An advantage of using a hologram member such as a hologram dry plate is that it is a kind of display plate that can give an alarm display to other vehicles such as following vehicles, but from the driver of the vehicle wearing this, It is like a transparent glass, and it does not reduce the visibility of the driver's back and the like. Further, since the warning display can be directly performed by using the light source of the following vehicle as it is, there is also an advantage that a simple structure that does not require the light detection unit, the display drive unit and the like can be provided. In addition, the brightness of the virtual image reproduced by the hologram dry plate changes according to the inter-vehicle distance as shown in the characteristic diagram of FIG. 7. Therefore, the shorter the inter-vehicle distance and the closer the other vehicle is, the brighter the alarm display is. It can be performed.

Needless to say, the content of the display pattern to be alarm-displayed is not limited to the above-mentioned embodiment and may be other content as long as it can display that the other vehicle is in the high beam state.

[Brief description of drawings]

FIG. 1 is a rear perspective view of a vehicle showing an embodiment of the present invention, FIG. 2 is an explanatory view for explaining the operation of the embodiment shown in FIG. 1, and FIG. 3 is an enlarged schematic view of a rear portion of the vehicle. FIGS. 4 and 5 are partial cross-sectional views of the portion A in FIG. 3, FIG. 5 is a partial cross-sectional view showing another state of mounting the hologram dry plate (3), and FIG. 6 shows a display pattern on the hologram dry plate (3). FIG. 7 is an explanatory diagram for explaining the recording, and FIG. 7 is a characteristic diagram showing the relationship between the inter-vehicle distance and the brightness of the virtual image (7) reproduced by the hologram dry plate (3). 2 ... Rear window, 3 ... Hologram dry plate, 5 ... Irradiation area in high beam state, 6 ... Irradiation area in low beam state.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsukasa Goto 1-1, Showa-cho, Kariya city, Aichi Prefecture Nihon Denso Co., Ltd. Co., Ltd. (56) References Actual development Sho 60-115140 (JP, U) Actual development Sho 61-138598 (JP, U)

Claims (2)

[Claims] 1. A hologram member in which a display pattern for displaying that a headlight of another vehicle such as a following vehicle is in a dazzling light state is recorded as three-dimensional information so as to be reproduced by the headlight light, When the headlight of the other vehicle is in the non-dazzling light state, the light of the headlight is not emitted, and when the headlight of the other vehicle is in the dazzling light state, the light of the headlight is emitted, the hologram member A dazzling light alarm display device for a vehicle, which comprises a vehicle body equipped with the. 2. The dazzling light warning display device for a vehicle according to claim 1, wherein the hologram member is mounted above a rear window of the vehicle body.