JPH05338494A - Back mirror, head lamp, window for vehicle and vehicle - Google Patents

Abstract

PURPOSE:To provide a vehicle including a new back mirror excellent in its glare-proof effect, a new head lamp capable of effectively reducing 'glare' for a back mirror having no glare-proof function, and a window for a vehicle which is excellent in glare-proof property. CONSTITUTION:Polarizing layers 10C, 12C are provided on mirror surfaces in back mirrors 10, 12, A polarizing means 20D for linearly polarizing the emitted light is provided on a head lamp 20. The polarizing directions of the polarizing means 20D and the polarizing layers 10C, 12C are set in such a manner that the polarizing direction of emitted light beam emitted from the head lamp 20 intersects the polarizing directions of the polarizing layers 10C, 12C of the back mirrors 10, 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rearview mirror, a headlight, a vehicle window and a vehicle.

[0002]

2. Description of the Related Art While driving an automobile or a motorcycle, the light of the headlight of an oncoming vehicle or the light of the headlight of a following vehicle reflected by a rearview mirror directly hits the eyes of a vehicle driver, Interfering with vehicle driving is often experienced while driving a vehicle.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel rearview mirror having excellent anti-glare effect, a headlight, a vehicle window, and a vehicle equipped with these.

[0004]

The "rear-view mirror" of the present invention is a rear-view mirror used in a vehicle, and is characterized in that "a polarizing layer is provided on the mirror surface" (claim 1).
A "vehicle" is an automobile, a motorcycle, or the like. "Rearview mirror" is a generic term for a rearview mirror and a side mirror (door mirror and fender mirror) when the vehicle is an automobile. The rearview mirror may be a front surface mirror or a rear surface mirror.
Further, the “polarizing layer” may be in any form of a plate, a film, or a thin film, and when the rearview mirror is a surface mirror, the polarizing layer may also serve as a protective layer for the mirror surface.

The "headlight" of the present invention is a headlight used for vehicles such as the above-mentioned automobiles and motorcycles, and is characterized by "having a polarizing means for linearly radiating emitted light" (claim 2). ). The headlight is a general term for headlights, auxiliary lights, fog lamps, etc., and the polarization means is provided in one or more or all of them. The “polarizing means” may be in the form of a plate, a film, or a thin film, like the polarizing layer according to claim 1, and its deployment position is a position of the lamp structure as long as it can linearly polarize the emitted light. Any position may be used. The polarization means in this headlight can be set so that "the polarization direction of the emitted light is substantially horizontal" (claim 3).

The vehicle window of the present invention is characterized in that "a polarizing layer is provided on at least a part of the window" (claim 4). This vehicle window is
It can be used for railroad vehicles such as trains. The “polarizing layer” is a plate-like member, like the polarizing layer in the rear-view mirror according to claim 1.
It may be in the form of a film or a thin film. In the case of a film-like polarizing layer, it may be adhered to one side of a vehicle window, or when forming a window with laminated glass, it may be sandwiched between the laminated glass film-like polarizing layer, In the case of a thin-film polarizing layer, it may be formed on the window surface by sputtering or the like.

The polarizing layer provided with the window is
Since it is mainly for the purpose of preventing glare from the headlights of other vehicles, it is not always necessary to provide it on the entire surface of the window, and it is sufficient to provide it only on the necessary parts for antiglare.

A vehicle according to a fifth aspect is an automobile, a motorcycle, or the like, and has the rearview mirror according to the first aspect and the headlight according to the second or third aspect. The polarization directions of the polarization means and the polarization layer are set so that the polarization direction of the emitted light flux intersects with the polarization direction of the polarization layer in the rearview mirror. " The crossing angle of the polarization directions can be set to various angles including “right angle”.

A vehicle according to claim 6 is an automobile or a railroad vehicle, and the front window is the vehicle window according to claim 4.

In the vehicle according to claim 6, the rearview mirror can be the rearview mirror according to claim 1 (claim 7). When the vehicle according to claim 6 is an automobile, the front window and the rear window are the vehicle windows according to claim 4, and among the rearview mirrors, the side mirrors are the rearview mirrors according to claim 1. (Claim 8). Further, the above-mentioned claim 6
Alternatively, the vehicle described in 7 or 8 may have a headlight according to claim 2 or 3.

The linear polarization efficiency (ratio of the intensity of the linearly polarized light beam to the intensity of the transmitted light) in the "polarizing layer / polarizing means" does not need to be high, and is 30 to 60. % Is sufficient. Further, the polarization effect may be applied only to light in a wavelength range in which the human eye has a particularly strong sensitivity.

[0012]

In the rear-view mirror according to the first aspect, a considerable portion of the reflected light is linearly polarized by the polarizing layer provided on the mirror surface. Since the luminous flux emitted from the headlight used in a normal vehicle is in a random polarization state, when a considerable part is linearly polarized by being reflected by the rearview mirror of the present invention, the reflected luminous flux has its light amount. Will be removed from the corresponding part of.

In the headlight according to the second aspect, the light quantity itself of the headlight is reduced by the polarization means. Further, in the headlight of claim 3, the emitted light beam is polarized in a substantially horizontal direction. Generally, the mirror surface of the rearview mirror has a small inclination with respect to the vertical axis. Therefore, the “P-polarized component” occupies most of the incident component of the headlamp light beam polarized in the horizontal direction on the rear-view mirror. Rearview mirrors usually have a reflection angle of 30-40
As is well known, the reflectance of P-polarized light has a characteristic of "monotonically decreasing" in the region of a reflection angle of 0 to 60 degrees. If so, the reflected light intensity can be effectively reduced even in the rear-view mirror having no polarizing layer.

In the vehicle window according to the fourth aspect, the amount of light that enters the vehicle through the window is reduced by the action of the polarizing layer.

In the vehicle according to the fifth aspect, since the rearview mirror is the one according to the first aspect, the intensity of light reflected by the rearview mirror of the headlight from the following vehicle is reduced and the headlight is claimed. According to the item 2 or 3, the reflected light intensity of the rearview mirror light in the preceding vehicle is reduced.

In the vehicle according to the sixth aspect, since the front window is the one according to the fourth aspect, the light intensity of the oncoming vehicle is effectively reduced. In the vehicle according to claim 7, the front window is the one according to claim 4,
Further, since the rearview mirror is the rearview mirror according to the first aspect, both the light of the oncoming vehicle headlight and the intensity of the light of the following vehicle headlight reflected by the rearview mirror are reduced. In the vehicle according to claim 8, the front window and the rear window are the vehicle windows according to claim 4, and among the rearview mirrors, the side mirrors are the rearview mirrors according to claim 1. The light of the lantern,
Both the intensity of the light of the following vehicle headlight reflected by the rearview mirror is reduced. In the vehicle according to claim 9, in addition to the effect of the vehicle according to claims 6, 7, and 8, the irradiation light amount of the headlight to another vehicle is reduced.

The operation of the vehicle headlight has been mainly described above. However, if the present invention is carried out, the light intensity reducing effect of the polarizing layer / polarizing means can of course be applied to natural light (in a natural polarized state). It works effectively.

[0018]

EXAMPLES Specific examples will be described below. Figure 1
(A) shows an embodiment in which the vehicle of the invention of claim 5 is applied to an automobile. Reference numeral 1 is an automobile, reference numeral 10 is a door mirror, reference numeral 12 is a rearview mirror, and reference numeral 20 is a headlight (headlight / auxiliary light).

As shown in FIG. 1B, the door mirror 10 is a surface mirror formed by vapor-depositing an aluminum thin film 10B on a glass substrate 10A, and a polaroid film 10C as a polarizing layer adhered on the mirror surface. Has been done.

As shown in FIG. 1 (B), the room mirror 12 has an aluminum thin film 12B on a glass substrate 12A.
Is a surface mirror formed by vapor deposition, and a polaroid film 12C is adhered as a polarizing layer on the mirror surface.

As shown in FIG. 1C, the headlight 200 integrally includes a light source 20A, a reflector 20B and a face lens 20C, and a polaroid film 20D as a polarizing means is provided on the surface side of the face lens 20C. It is glued. Auxiliary lights are similarly formed.

Since this embodiment has the above-described structure, in the case where the vehicle headlight or natural light (direct light from the sun, reflected sunlight, etc.) directly hits the driver through the rearview mirror. In addition, the intensity of the reflected light is effectively reduced by the action of the polarizing layer, so you do not feel a strong glare.

FIG. 2 shows an automobile 2 in which the invention of claim 7 is implemented. Reference numeral 21 is a headlight, reference numeral 11 is a door mirror, reference numeral 13 is a rearview mirror, reference numeral 15 is a front window, reference numeral 17 is a rear window, and reference numeral 19 is a side window. The door mirror 11 and the room mirror 13 are the same as those in the embodiment of FIG. 1, and are provided with a polarizing layer.

The front window 15 has a polaroid film adhered to its rear surface (inside the room). In this example, the polaroid film is provided on the entire front window.

Therefore, in this embodiment, the intensity of the "light entering the vehicle through the front window 15" is reduced by the polarizing layer (polaroid film) provided on the front window 15 and is shown in FIG. In addition to the effect of the embodiment (anti-glare effect on the headlight of the following vehicle), an anti-glare effect on the oncoming vehicle headlight is obtained. It goes without saying that an antiglare effect against natural light can also be obtained.

If a polarizing layer is provided not only on the front window 15 but also on the rear window 17, the embodiment of the invention described in claim 8 is achieved. At this time, the intensity of the light from the headlight of the following vehicle is reduced by the rear window 17 and the rearview mirror 1
Since it is incident on the room mirror 3, the room mirror 13 does not need to be provided with a polarizing layer. Similarly, if the side window 19 is also provided with a polarizing layer, the installation of the polarizing layer on the door mirror 11 can be omitted.

It should be noted that in the case of the polaroid film exemplified above as the polarizing layer and the polarizing means, the color in the transmitted light does not substantially change, and therefore the rear-view mirror image and the external color seen through the window are natural. It is the color itself, which does not interfere with the perception of the outside world.

[0028]

As described above, according to the present invention, a novel rearview mirror, headlight, vehicle window, and vehicle can be provided. The rearview mirror according to the present invention reduces the reflected light intensity with the above-described configuration, so that the glare of the rearview mirror reflected light can be effectively reduced. The headlight of the present invention can effectively reduce the glare of the reflected light from the rearview mirror even if the rearview mirror of the preceding vehicle does not have the dazzling function because the amount of emitted light is reduced. With the headlight, the reflectance of the light emitted from the headlight can be effectively reduced, and the glare can be further reduced.

Further, in the vehicle according to claim 5, the rearview mirror thereof has the excellent anti-glare effect of the rearview mirror according to claim 1, and the headlight is effective for the glare of the rearview mirror reflected light in the preceding vehicle. To reduce.

Further, since the window for a vehicle according to claim 4 exerts an excellent anti-glare effect by itself, when the vehicle according to any one of claims 6 to 9 is implemented by using the window, an oncoming vehicle headlight can be obtained. The vehicle has an excellent anti-glare effect against.

If the vehicles according to claims 5, 6 to 9 become widespread, the effect of dimming the headlights between the vehicles effectively works, and the frontlights of the oncoming vehicle and the following vehicle at the time of night driving are effective. Generally, the problem of glare caused by lights can be solved. In particular, it is possible to eliminate the headlight light of the following vehicle from the rearview mirror image by making the polarization direction of the emitted light from the headlight orthogonal to the polarization direction of the polarization layer of the rearview mirror.

The polarizing layer / polarizing means may be formed as a thin film as described above, and in this case, it is possible to have a polarizing effect only on light in a specific wavelength region. In such a case, By setting the wavelength region of polarized light in accordance with the wavelength region in which humans strongly feel glare, an effective antiglare effect can be realized without significantly lowering the intensity of transmitted light / reflected light.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention.

FIG. 2 is a diagram for explaining another embodiment.

[Explanation of symbols]

 1 Car as a vehicle 10 Door mirror 12 Room mirror 20 Headlight

Claims (9)

[Claims] 1. A rearview mirror used in a vehicle, wherein a polarizing layer is provided on a mirror surface. 2. A headlight used in a vehicle, comprising a polarizing means for linearly radiating emitted light. 3. The headlight according to claim 2, wherein the polarizing means is set so that the polarization direction of the emitted light is substantially horizontal. 4. A vehicle window characterized in that a polarizing layer is provided on at least a part of the window. 5. A rearview mirror according to claim 1, and 2.
Or the headlight according to 3 above, and the polarization means and the polarization direction of the polarization layer are set such that the polarization direction of the radiant flux emitted by the headlight intersects the polarization direction of the polarization layer in the rearview mirror. A vehicle characterized by the following. 6. A vehicle, wherein the front window is the vehicle window according to claim 4. 7. The vehicle according to claim 6, wherein the rearview mirror is the rearview mirror according to claim 1. 8. The vehicle according to claim 6, wherein the front window and the rear window are the vehicle windows according to claim 4, and among the rearview mirrors, the side mirrors are the rearview mirrors according to claim 1. A vehicle characterized by. 9. A vehicle according to claim 6 or 7 or 8, characterized by comprising the headlight according to claim 2 or 3.