JPH06321008A - Display of automobile - Google Patents

Abstract

PURPOSE:To decrease dazzle to a driver in a display having the method by which a hologram is attached to a rear window glass, and light from a regenerative light source is radiated to this hologram, so as to regenerate a colored hologram image. CONSTITUTION:A hologram 3 arranged on the rear window glass 2 of an automobile and a regenerative light source 10 for regenerating a hologram image by radiating light to this hologram 3 are provided, and the regenerative light source 10 is so constituted as to radiate white light, and the required colored- light transmitting film (red base) 31 is laminated on the hologram 3. When the white light from the regenerative light source 10 is radiated to the hologram 3, the hologram 3 regenerates the red-colored image by the action of the red base 31. Even through the light from the regenerative light source 10 is reflected toward the driver by the rear window glass 2, the effect of dazzle is little because of the white light, and any problem in regulations may not be generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device used in a vehicle such as an automobile, and more particularly to a display device using a hologram suitable for a high mount stop lamp (hereinafter abbreviated as HMSL).

[0002]

2. Description of the Related Art The HMSL of an automobile is effective in clearly confirming a brake to a succeeding vehicle, and in recent years, an HMSL in which a rear windshield of an automobile is displayed for display is proposed. However, if the HMSL is provided at the rear window position, it may limit the rear view of the driver of the own vehicle. Therefore, recently, a hologram is proposed. For example, the one proposed in Japanese Patent Laid-Open No. 3-65448 by the applicant of the present invention is such that a hologram on which a hologram image is recorded is provided on a rear window glass of an automobile and the hologram is irradiated with reproduction light. Thus, the hologram image is reproduced toward the rear of the automobile so that the following vehicle can visually recognize it.

In this HMSL, if a lens step image used in the conventional HMSL is recorded on a hologram and red light is used as the reproduction light, the red lens step image can be visually recognized from the following vehicle. Can effectively function as. And this HMSL
Then, there is a hologram on the rear window glass of the car, but this hologram is almost transparent,
Since the reproduction light source that emits the reproduction light can be provided at a position apart from the rear window glass, even when the hologram is provided in a wide area of the rear window glass, it is possible to alleviate the limitation of the driver's rear view. There are advantages.

[0004]

By the way, in the HMSL of such a system, in order to reproduce a red image, red light is emitted from a reproduction light source to irradiate a hologram. Therefore, a part of the light emitted from the reproduction light source is applied to the rear window glass around the hologram, and this light is reflected on the surface and the inner surface of the rear window glass and directed toward the front of the automobile, which is It may get in your eyes and dazzle the driver. Usually, the reproduction light source has a structure in which the inner surface of the body is close to a paraboloid of revolution, and the light from the light source is reflected as parallel light to irradiate the hologram, but the filament of the light source bulb is a point light source. It is difficult to make the light from the reproduction light source into perfect parallel light because there is no light and the direct light is emitted from the light bulb.Therefore, even when the reproduction light source and the hologram are correctly positioned, the dazzling is completely eliminated as described above. Difficult to prevent. An object of the present invention is to provide a display device in which dazzling to a driver is reduced by applying the HMSL using a hologram.

[0005]

In the display device of the present invention, the reproduction light source emits white light, and the colored light is emitted to the hologram for reproducing the image toward the rear of the automobile by the light from the reproduction light source. The transparent film is laminated. Also,
The reproduction light source is composed of a plurality of light sources, and a light transmission film of an arbitrary color is laminated on the hologram portion corresponding to each light source.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment in which the present invention is applied to HMSL,
FIG. 2 is a schematic perspective view of the rear window glass portion of the automobile as viewed from the back side, and FIG. 2 is an enlarged sectional view taken along the line AA. In these figures, 1 is HMSL, 2 is a rear window glass attached to the rear opening of the vehicle body of the automobile, and the hologram 3 is integrally formed on the inner surface of the rear window glass 2 along the lower edge of the central portion. Pasted on. As shown in the schematic configuration of FIG. 3, the hologram 3 includes, for example, a red base 31 made of, for example, a red light transmissive resin, and a photosensitive layer 32 integrally formed on the surface of the red base 31. It is composed of an adhesive layer 33 coated on the back surface of the red base 31, and is a visualized image obtained by photographing a general HMSL lens step on the photosensitive layer 32 by a holographic technique. This hologram 3
Is formed laterally in the shape of an elongated strip, and this is formed by the adhesive layer 33.
It is attached to the inner surface of the rear windshield 2.

A reproducing light source 10 is arranged on the rear parcel shelf 4 at a position facing the hologram 3. As shown in a partially exploded perspective view of FIG. 4, the reproduction light source 10 includes a funnel-shaped body 11 having a laterally elongated opening in the front side corresponding to the shape of the hologram 3, and the body 11.
The housing is composed of the white transparent plate 12 attached to the front opening. Here, a concave groove 11a is formed over the entire circumference of the opening edge of the body 11, the peripheral edge portion 12a of the white transparent plate is inserted into the concave groove 11a, and the peripheral edge portion 12a of the white transparent plate is projected at a plurality of locations. The lance 12b provided is fitted into the hole 11b formed in the outer surface of the concave groove 11a to integrate them. Further, a light bulb insertion hole 13 is formed on one side surface of the body 11, a socket 15 supporting a light bulb 14 is fitted into the light bulb insertion hole 13, and the light bulb 14 is arranged at a required position in the body. . This light bulb 1
4, a protector 16 made of a metal plate or the like is supported on the inner surface of the body 11 located on the upper side by a guide 17 extending on the inner surface of the body 11, and the heat generated by the light bulb 14 damages the body 11. Prevent receiving.
The back surface of the body 11 has a shape close to a paraboloid, and a metal film such as aluminum is formed on the inner surface of the body 11 to form a reflector 18, which reflects the light from the light bulb 14 toward the front opening. Further, a box-shaped portion 19 having a hollow inside is integrally formed on both outer side surfaces of the body 11 so as to project in both directions, and the outer surface of the box-shaped portion 19 has a predetermined angle with respect to the front opening. The flange 20 is formed by. The flange 20 is provided with a bolt insertion hole 21 for attaching the body 11 to an automobile.

The reproduction light source 10 having the above-described structure is installed inside a rectangular hole formed in the vehicle body panel 5 of the rear parcel shelf 4, and as shown by the broken line in FIG. The flange 20 of the reproduction light source 10 is attached to the vehicle body panel 5 using the bolt 7 screwed into the hole, and the body 11 is attached to the vehicle body panel 5 in a state of being tilted rearward. At this time, the opening portion of the reproduction light source faces the hologram 3 provided on the rear window glass 2 and is separated from the rear window glass 2 by a certain size. A decorative panel 6 for decorating the rear parcel shelf 4 is provided above the vehicle body panel 5.

According to the HMSL 1 having this configuration, the light bulb 14
The light emitted by is directly or reflected by the reflector 18 and transmitted through the white transparent plate 12 in the opening to be emitted from the reproduction light source 10. Then, this light is projected onto the hologram 3, is optically diffracted by the photosensitive layer 32 when passing through the hologram 3, and is colored red by passing through the red base 31. As a result, a red hologram image can be observed from the rear of the rear window glass 2 and it functions as an HMSL. At this time, as shown by the chain line arrow in FIG. 2, a part of the light from the light bulb 14, especially the light emitted from the peripheral portion of the front opening of the reproduction light source 10, is irradiated on the surface of the rear window glass 2 around the hologram. The surface or the inner surface of the vehicle may be reflected toward the front of the vehicle to dazzle the driver. However, since this light is white light, it has little effect on the driver and is not a legal problem.

As shown in the schematic structure of FIG. 5, if a light reflection preventing film 8 made of a black ceramic coating film is formed on the inner surface of the rear window glass around the hologram 3,
The light projected on the rear window glass 2 around the hologram 3 can be absorbed by the light reflection preventing film 8, and the light reflected toward the driver on the surface of the rear window glass can be reduced. Although the structure is somewhat complicated, a light shielding wall or a light shielding plate may be provided on the outer side of the reproduction light source 10 to prevent the rear window glass around the hologram from being irradiated with light. Further, the hologram itself may have the same structure as the conventional one formed on a white transparent resin base, and a red light transmitting film such as a red filter may be integrally formed on the surface thereof.

FIG. 6 is a schematic perspective view of a second embodiment of the present invention,
FIG. 7 is a schematic plan configuration diagram thereof. This embodiment is an example in which a hologram is used to configure an HMSL and a turn signal lamp (hereinafter abbreviated as TSL). That is, the hologram 3A is provided along the lower edge of the rear window glass 2 over substantially the entire width thereof, and the required regions on both sides of the hologram 3A are provided on the right TSL (RTSL) 1R and the left TSL.
(LTSL) 1L and the central portion is defined as HMSL1. And RTSL1R and LT
In SL1L, the base of the photosensitive layer 32 forming the hologra 3A is formed of an amber color base 31U, and the central HMSL is formed.
In 1, the base of the photosensitive layer 32 of the hologram is the red base 3
It is composed of 1R.

The reproduction light source 10A has a main light source 10 at the center.
0, and the sub-light sources 200 and 300 are arranged on the left and right sides thereof, respectively, to constitute a plurality of light sources. The main light source 100 has a large central body 101 in which a light bulb 102 is arranged, and the sub light sources 200 and 300 have small right bodies 201 and left bodies 301 integrally formed on both sides of the central body 101. Are installed. A white transparent plate 400 is integrally attached to the opening of each body 101, 201, 301 over the width of the entire body. Here, the reflector 103 formed on the inner surface of the central body 101 reflects the light of the light bulb 102 into the HMS of the hologram 3A.
The light distribution characteristic is set so as to illuminate L1. Further, the reflectors 203 and 303 formed on the inner surfaces of the left and right hoodies 201 and 301 are respectively the light bulbs 202 and 3 respectively.
The light distribution characteristic is set such that the light of 02 is applied to the corresponding RTSL1R, LTSL1L. The main light source 1
Needless to say, the light bulb 102 of 00 is turned on during braking, and the light bulbs 202 and 302 of the left and right auxiliary light sources 200 and 300 are individually turned on by the turn signal switches of the automobile.

According to this embodiment, during braking, the main light source 100 is turned on and the HMSL1 of the hologram 3A is illuminated with white light. Then, the image is reproduced by the HMSL1, and at this time, the red base 31 provided on the HMSL1.
Since the light is colored red by R, the red reproduced image functions as HMSL. On the other hand, the turn signal switches turn on the light bulbs 202 and 302 of either of the sub light sources 200 and 300, and the white light is emitted to either the left or right TSL of the hologram 3A, that is, RTSL1R or LTSL1L. As a result, the image is reproduced on the RTSL1R or LTSL1L, at which time it is colored in amber by the amber color base 31U, and the reproduced image of this amber color functions as a TSL.

Even in this case, even if a part of the light from the reproduction light source 10A is applied to the rear window glass 2 around the hologram 3A and reflected on the surface or the like to be directed to the driver, the light is white. Since it is light, it has little effect on the driver's dazzling, and it does not pose a problem in terms of regulations.
Here, in the above-described embodiment, the example in which the present invention is applied to HMSL and TSL is shown, but it may be applied to a backup lamp or to a display device including other indicator lights. Also in this case, if a filter of the required color is laminated on the hologram, the reproduction light source can display the required color by merely emitting white light, and the driver is not dazzled by the colored light. Can be reduced.

[0015]

As described above, according to the present invention, the colored light transmitting film is laminated on the hologram, and the reproducing light source emits white light to irradiate the hologram. While the image colored in the color is reproduced, even if part of the light from the light source is reflected by the rear windshield and enters the driver's eyes, the white light reduces the effect of dazzling. Moreover, there is an effect that there is no problem in terms of regulations. Further, if the hologram is divided into a plurality of parts and a plurality of colored light-transmitting films of different colors are laminated on each part, it can be configured as a lamp having different functions or as an arbitrary display device. It can be applied to applications.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an automobile of an embodiment in which the present invention is applied to HMSL, as viewed from the back side.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a partially exploded perspective view showing a schematic configuration of a hologram.

FIG. 4 is a partially exploded perspective view in which a reproduction light source is partially broken.

FIG. 5 is a perspective view of an example in which a light reflection preventing film is provided around a hologram.

FIG. 6 is a schematic perspective view of another embodiment of the present invention.

7 is a conceptual cross-sectional view showing the plane configuration of FIG.

[Explanation of symbols]

1 HMSL (High Mount Stop Lamp) 1R RTSL (Right Turn Signal Lamp) 1L LTSL (Left Turn Signal Lamp) 2 Rear Window Glass 3,3A Hologram 4 Rear Parcel Shelf 10,10A Playback Light Source 11 Body 14 Light Bulb 31 Red Base, 31R Red base, 31U Amber color base 32 Photosensitive layer 100 Main light source 200,300 Sub light source

Claims (3)

[Claims] 1. A display device for an automobile, comprising: a hologram provided on a rear window glass of the automobile; and a reproduction light source for irradiating the hologram with light to reproduce an image toward the rear of the automobile. A display device for an automobile, which is configured to emit white light and has a colored light transmission film laminated on the hologram. 2. A display device for an automobile according to claim 1, wherein a red light transmitting film is laminated on the hologram to reproduce a red image as a high mount stop lamp for the automobile. 3. A reproduction light source is constituted by a plurality of light sources, a hologram is divided into a plurality of portions corresponding to the respective light sources, and a red light transmitting film is laminated on one portion to constitute a high mount stop lamp, The display device for an automobile according to claim 1, wherein an amber-color light-transmitting film is laminated on another portion to constitute a turn signal lamp.