JPH0732938A - High mount stop lamp of automobile - Google Patents

Abstract

PURPOSE:To prevent a dazzlement to the drivers of the own car and a following car, in a high mount stop lamp of an automobile using a hologram. CONSTITUTION:A hologram to regenerate a hologram image by diffracting the radiating light is stuck on a rear windshield 1, a regenerating light source 10 to radiate the light to the hologram 2 is provided to radiate the light to the upper side of a rear parcel shelf 3 of the car, and a reflecting means 4 to reflect the light radiated from the regenerating light source 10 to the rear side of the car is provided. By radiating the light in the axial direction of the regenerating light source 10 to the upper side, a dazzlement to the driver of a following car is prevented. And by reflecting the reflected light from the rear windshield 1 by the reflecting means 4, a dazzlement to the driver of the own car is prevented.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art The HMSL of an automobile is effective in clearly confirming a brake to a succeeding vehicle. In recent years, the HMSL has been provided in a passenger compartment of an automobile and is displayed through a rear window glass. Is proposed. Further, in this type of HMSL, in order to enhance the effect of confirming the brake on the following vehicle, a hologram is recently proposed. For example, the one shown in FIG. 5 has been previously proposed by the present applicant, and the hologram 2 on which a hologram image is recorded is installed on the rear window glass 1 of an automobile or the like and faces the hologram 2. By providing the reproduction light source 10 on the rear parcel shelf 3 or the like and irradiating the hologram 2 with the reproduction light emitted from the reproduction light source 10, the hologram image is reproduced toward the rear of the vehicle so that the following vehicle can visually recognize it. It was done. In this HMSL, if the lens step image used in the conventional HMSL is recorded in a hologram and red light is used as the reproduction light, the red lens step image can be visually recognized from the following vehicle, which is effective as the HMSL. Can function.

[0003]

By the way, this HMS
When the present inventor studied in detail about L, a part of the red light emitted from the reproduction light source 10 and applied to the hologram 2 is reflected by the hologram 2 and the rear window glass 1 as shown by a broken line in the figure. Therefore, the reflected red light may enter the eyes of the driver of the own vehicle and may become dazzling light to the driver. Therefore, as shown by a chain line in the figure, a cover 5 is provided on the front side of the reproduction light source 10 to prevent the driver of the own vehicle from being dazzled. However, also in this configuration, as shown by the broken line, a part of the light with which the hologram 2 is irradiated passes through the hologram 2 along the optical axis of the reproduction light source 10, and thus is emitted along this optical axis. If such light (hereinafter, referred to as direct transmitted light) enters the eyes of the driver of the following vehicle, there is a concern that the driver of the following vehicle may be dazzled by the direct transmitted light. An object of the present invention is to prevent the dazzling of the driver of the own vehicle and the following vehicle in the HMSL using such a hologram.
To provide.

[0004]

According to the HMSL of the present invention, a reproduction light source for irradiating a hologram for reproducing a hologram image is irradiated with light toward the upper side of an automobile, and the reproduction light source is Reflecting means is provided for reflecting the emitted light toward the rear of the automobile. The reflecting means is composed of a reflecting mirror that reflects the light emitted from the reproducing light source toward the rear of the vehicle, and is configured to irradiate the reflected light to the hologram arranged along the rear window glass of the vehicle. . The reflecting means is composed of a reflection hologram that diffracts the light emitted from the reproduction light source toward the rear of the automobile.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a rear window glass portion of an automobile equipped with the HMSL of the first embodiment of the present invention as seen from the rear side, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. It is a perspective view. In these figures, a hologram 2 is integrally attached to the inner surface of the rear window glass 1 of an automobile at a position along the lower edge of the central portion. Further, on the rear parcel shelf 3 of the automobile facing the holograms 2, there is arranged a reproduction light source 10 for irradiating light toward the upper side of the automobile, that is, the vertical upper side of the automobile to reproduce a hologram image. Further, at a position directly above the reproduction light source 10, a reflecting mirror 4 having a reflecting surface inclined downward at an angle of approximately 45 degrees is arranged.

Although not described in detail, the hologram 2 has a photosensitive layer formed on a base made of a transparent resin, and a general HMSL lens step is photographed on the photosensitive layer by a holographic technique to obtain a visible image. It has been transformed. This hologram 2 is laterally formed in a strip shape, and is adhered to the inner surface of the rear window glass 1 with a transparent adhesive (not shown). The reflection mirror 4 is a half mirror in which a silver thin film 4b is formed on the surface of a transparent resin plate 4a, and is formed in an elongated shape similar to that of the hologram 2, which will be described in detail later. Thus, it is provided integrally with a part of the reproduction light source 10. Here, the transparent resin plate is selected to have a spectral characteristic that reflects only red light, and is formed so that its reflectance is sufficiently higher than its transmittance.

On the other hand, the reproduction light source 10 includes a funnel-shaped body 11 having a horizontally elongated opening on the front side corresponding to the shape of the hologram 2, and a red filter 12 attached to the front opening of the body 11. The housing is composed of. Here, the peripheral portion 12a of the red filter is inserted into the concave groove 11a formed over the entire circumference of the opening edge of the body 11, and the lances 12b projecting at a plurality of positions of the filter peripheral portion 12a are provided on the outer surface of the concave groove 11a. The two are integrated by being fitted into the opened hole 11b. Also, the body 1
A light bulb insertion hole 13 is formed on the back surface of 1, and a socket 15 supporting a light bulb 14 is fitted into the light bulb insertion hole 13.
The light bulb 14 is arranged at a required position in the body. Also,
This back surface has a shape close to a paraboloid of revolution, and a metal film such as aluminum is formed on the inner surface of the back surface of the reflector 16.
And reflects the light from the light bulb 14 toward the front opening. Further, on both outer side surfaces of the body 11, there are provided flanges 17 each having a bolt insertion hole 17a so as to project in both directions. The lower edge 4a of the reflecting mirror 4 is integrally attached to one side of the front opening of the body 11 with the lower edge 4a being tilted at an angle of about 45 degrees with respect to the front opening. Has been done.

As shown in FIG. 2, the reproducing light source 10 has a bolt 18 inserted into a bolt insertion hole 17a of the flange 17 in which substantially the entire housing is embedded in an elongated opening provided in the rear parcel shelf 3. To fix it to the panel 3a of the rear parcel shelf 3. At this time, the reproducing light source 10 is installed such that the front opening is directed vertically upward and the reflecting mirror 4 integrated with the front opening is horizontally opposed to the hologram 2.

According to this structure, the light emitted from the electric bulb 14 is transmitted directly or after being reflected by the reflector 16 and transmitted through the red filter 12 attached to the front opening, and emitted from the reproducing light source 10 as red light. Then, most of this red light is reflected by the reflecting mirror 4 and then projected from the front direction to the hologram 2, and is diffracted toward the rear of the rear window glass 1 in this hologram 2, and as a result, A red holographic image can be observed by the driver of the car, and the holographic image functions as HMSL.

At this time, a part of the red light applied to the hologram 2 is a part of the hologram 2 as shown by a chain line in FIG.
And is reflected by the rear window glass 1 toward the driver of the own vehicle, but this reflected light is again projected to the reflecting mirror 4, so that it is reflected downward here, and There is no dazzling. At this time, a part of the reflected red light tries to pass through the reflecting mirror 4, but since the transparent resin plate forming the reflecting mirror 4 has a spectral characteristic of not transmitting the red light, the red light is blocked here. The red light never reaches the driver's eyes.

On the other hand, when a part of the light from the reproduction light source 10 is projected on the reflecting mirror 4, a part of the light is directly transmitted as shown by a chain double-dashed line in FIG. Since the transmitted light passes through the rear window glass 1 toward the upper part of the automobile, it does not enter the eyes of the driver of the following vehicle and dazzle the driver of the following vehicle. Further, since red light is reflected and does not pass when passing through the reflecting mirror 4, even if a part of the red light is reflected toward the front of the own vehicle when passing through the rear window glass, as described above, the driver does not. Never dazzle you. Since the reflecting mirror 4 is composed of a half mirror, it is needless to say that the driver of the vehicle can secure the rear view through the reflecting mirror 4 and the hologram 2. here,
Although the hologram 2 is adhered to the rear window glass 1 in this embodiment, it may be arranged so as to be separated for a predetermined period. Alternatively, the reflecting mirror 4, the opening of the reproduction light source 10, and the hologram 2 may be integrated to form a triangle. With this configuration, the HMSL can be configured as an independent component, and the vehicle can be more easily equipped.

FIG. 4 is a sectional view of another embodiment of the present invention. In this embodiment, a reflection type hologram is used. That is, the reflection-type hologram 2A is configured to diffract by irradiating the irradiated light, and for example, a photosensitive layer is formed on the surface of a base made of a transparent resin, and this is a typical photosensitive layer. The lens step of HMSL is photographed by the holography technique and visualized.
Further, a thin film of silver or the like is formed on the back surface of the base to form the reflecting surface 4A of the half mirror. The reflection type hologram 2A having such a structure is integrally formed on one side of the front opening of the body 11 instead of the reflection mirror provided in the reproduction light source 10 of the above-mentioned embodiment, and is close to about 45 degrees with respect to this opening. It is integrated by inclining downward at a predetermined angle. In this embodiment, the reproduction light source 10 is not provided with a red filter, but a white filter (white lens) 1
2A is provided and white light is emitted from the reproduction light source 10.

According to this structure, the light emitted from the reproduction light source 10 is applied to the reflection hologram 2A, where it is reflected toward the rear of the automobile and diffracted. The hologram image can be reproduced through the rear of the car. At this time, since the reflection hologram 2A has wavelength selectivity, if the hologram is configured to select only red light, the reflected and diffracted light becomes red light, and this red light forms a hologram image. Will be played. At this time, as shown by the alternate long and short dash line, the light reflected by the rear window glass 1 and reflected toward the driver of the own vehicle is again irradiated on the reflection hologram 2A, so that it is reflected downward here. . At this time, the light is reflected by the reflection surface 4A formed on the back surface of the reflection hologram.

Further, the light that is emitted from the reproduction light source 10 to the reflection hologram 2A and is not reflected here is transmitted to directly above the automobile while leaving the reddish light, so that the following vehicle is driven. It does not get in your eyes and prevents dazzling. Further, at this time, even if the light transmitted through the reflection hologram 2A is reflected by the rear window 1 toward the front of the own vehicle, this light is not red light, so that the driver of the own vehicle is not dazzled. . Here, in this embodiment, the reflection surface of the half mirror is formed on the back surface of the hologram, but it is not always necessary if the reflection efficiency of the hologram is high. Also in this embodiment, since the reflection hologram 2A is formed based on the transparent resin, it is possible to secure the rear view of the driver of the own vehicle. Also in this embodiment, since the HMSL can be constructed without adhering the hologram to the rear window glass, the HMSL can be constructed as an independent component as in the case of the above-described embodiment, so that the vehicle can be easily equipped.

[0015]

As described above, the HMSL of the present invention is used.
Is configured so that a reproduction light source for irradiating a hologram with light is directed toward the upper side of the automobile, and a reflecting means for reflecting the light emitted from the reproduction light source toward the rear of the automobile is provided. As a result, the light emitted from the reproduction light source along the optical axis to the outside of the car is directed upward to prevent the driver of the following vehicle from being dazzled, and the light that is directed to the driver of the own vehicle is reflected by the reflection means. Therefore, there is an effect that the dazzling can be prevented and, on the other hand, the rear view in the own vehicle can be secured through the reflecting means. Here, as the reflection means, a reflection mirror configured to reflect the light emitted from the reproduction light source toward the rear of the automobile,
If the reflected light is applied to the hologram arranged along the rear window glass of the automobile, the present invention can be configured by simply adding a reflecting mirror to the already proposed HMSL. It is effective when improving. Further, by configuring the reflection means as a reflection hologram that diffracts the light emitted from the reproduction light source toward the rear of the automobile, the present invention can be configured without using a reflecting mirror, and the configuration of the HMSL can be simplified. It will be possible.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an automobile equipped with the HMSL of the present invention as viewed from the rear side.

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

3 is a partially exploded perspective view of the HMSL of FIG.

FIG. 4 is a sectional view of another embodiment of the present invention.

FIG. 5 is a cross-sectional view of an example of HMSL proposed by the present applicant so far.

[Explanation of symbols]

 1 Rear window glass 2 Hologram 2A Reflective hologram 3 Rear parcel shelf 4 Reflector 4A Reflective surface 10 Reproduction light source

Claims (3)

[Claims] 1. A high mount stop lamp for an automobile, comprising: a hologram for diffracting irradiated light to reproduce a hologram image; and a reproducing light source for irradiating the hologram with light, wherein the reproducing light source is directed upward from the automobile. A high mount stop lamp for an automobile, characterized in that it is configured to irradiate light from the reproduction light source, and is provided with a reflecting means for reflecting the light emitted from the reproduction light source toward the rear of the automobile. 2. The reflecting means is composed of a reflecting mirror that reflects the light emitted from the reproducing light source toward the rear of the automobile, and irradiates the reflected light onto a hologram arranged along the rear window glass of the automobile. The high mount stop lamp for an automobile according to claim 1, wherein 3. The high mount stop lamp for an automobile according to claim 1, wherein the reflecting means is constituted by a reflection hologram that diffracts the light emitted from the reproducing light source toward the rear of the automobile.