JPH10993A - Spectular structure of rearview mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a specular structure of a rearview mirror that is less in a sense of incompatibility as securing sightability. SOLUTION: This is a specular structure of a rearview mirror provided with a sight angle magnifying part 12 magnifying a sight angle after being bent or curved, in a part of a specular section. This sight angle magnifying part 12 makes its reflectance go down as compared with a normal sight part 11 or the other specular part. This sight angle magnifying part 12 is provided with an electrochromic (gel) layer 18 as a reflectance changing layer varying transmittance by means of current-energization, as being interposed between a compound curved surface part 15 and a glass surface part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror structure of a rearview mirror such as a rearview mirror and a door mirror of a vehicle.

[0002]

2. Description of the Related Art As a mirror structure of a conventional rearview mirror of this type, for example, a mirror structure described in Japanese Patent Application Laid-Open No. 2-144240 as shown in FIG. 5 is known.

[0005] In FIG. 5, reference numeral 1 denotes a rearview mirror provided on the opposite side of the driver's seat for mainly viewing the rear and periphery of the vehicle.

In this rearview mirror 1, a resin mirror holder 2 has a normal view portion 3 mainly showing the rear of the vehicle and a convex curved surface, so that a front view angle is enlarged by enlarging the front portion of the vehicle. The front lower viewing angle magnifying portion 5 which enlarges and photographs a lower corner portion of the front of the vehicle by having a portion 4 and a convex curved surface, and enlarges and photographs the lower portion of the vehicle side by having a convex curved surface. The compound curved surface portion 7 is configured by attaching the side lower viewing angle expanding portion 6 to the side surface.

In the mirror structure of the conventional rear-view mirror configured as described above, a plurality of view sections 3 to 6 having different viewing ranges are provided.
Are stored in one mirror holder 2, so that the driver of the vehicle can check in all directions by looking at the rearview mirror 1.

[0006]

However, in such a mirror structure of the conventional rearview mirror, each view angle having another convex curved surface is provided adjacent to the normal view portion 3 mainly showing the rear of the vehicle. Since the magnifying parts 4 to 6 are provided, even if the line of sight is slightly shifted from the normal view part 3, the magnified image is distorted and gives a feeling of strangeness to the driver. In particular, when the vehicle is running, the ground shown in the side lower visual field enlarging unit 6 and the front lower visual field angle enlarging unit 5 flows at a high speed, so that the driver tends to feel discomfort.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mirror structure of a rear-view mirror which is less uncomfortable while ensuring visibility.

[0008]

According to a first aspect of the present invention, there is provided a view angle enlarging portion which is bent or curved to enlarge a view angle in a part of a mirror surface. In the mirror structure of the rear-view mirror, the view angle enlarging portion is characterized by a mirror surface structure of the rear-view mirror in which the reflectance is reduced as compared with other mirror portions.

[0010] In the above-described device according to the first aspect, the viewing angle enlarging portion is configured to have a lower reflectance than other mirror surfaces.

For this reason, even if the line of sight shifts in the viewing angle enlargement portion, the image that is enlarged and distorted appears to be dark and appears less unnatural. In particular, when the vehicle is running, the background such as the ground flowing at a high speed in the viewing angle widening portion becomes difficult to see, so that the driver does not feel discomfort. Further, since the viewing angle enlarged portion and the other mirror surface portion are clearly separated and seen, it is not necessary to provide a separate boundary line for distinguishing the viewing angle enlarged portion.

According to a second aspect of the present invention, the mirror surface structure of the rear-view mirror according to the first aspect, wherein the viewing angle enlarging portion is provided with a reflectance changing layer for changing a transmittance by energization. It is characterized by.

According to the second aspect of the present invention, when a current is applied to the reflectance changing layer provided in the viewing angle expanding portion, the transmittance changes.

For this reason, if necessary, the transmittance of the viewing angle magnifying portion is increased to increase the reflectivity of the viewing angle magnifying portion so that the magnified image can be clearly seen and viewed. I can do it.

According to the third aspect of the present invention,
The mirror structure of the rearview mirror according to claim 2, wherein the reflectance changing layer is energized when the vehicle moves backward to improve the transmittance.

According to the third aspect of the present invention, the reflectance changing layer is energized when the vehicle moves backward to improve the transmittance.

Therefore, when the vehicle is moving backward, the reflectance of the viewing angle expanding portion is automatically increased, and the image of the viewing angle expanding portion can be clearly captured and visually recognized.

In a normal state other than when the vehicle is moving backward, since no current is supplied, the transmittance of the reflectance changing layer is low, the reflectance of the viewing angle magnifying portion is reduced, and the image of the viewing angle magnifying portion is darkened. By taking a picture, discomfort and discomfort during traveling of the vehicle are reduced.

[0018]

Embodiment 1 Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings. The same or equivalent parts as those in the conventional example are denoted by the same reference numerals and described.

FIGS. 1 and 2 show a first embodiment of the present invention.
The reference numeral 8 is a door mirror as a rear-view mirror provided on the side of the vehicle.

This door mirror 8 is provided with a mirror surface portion 10 on the side surface of the resin-made mirror holder 9 on the vehicle interior side, and mainly captures an image of the rear of the vehicle, and provides the driver of the vehicle with the rear and rear periphery of the vehicle. Is visually recognized.

The mirror 10 has a normal field of view 11 for capturing an image of the rear of the vehicle in a normal size, and is positioned below and adjacent to the normal field of view 11.
And a viewing angle expanding section 12 having an area of.

As shown in FIG. 1, the normal view portion 11 is formed on a glass surface portion 13 that covers substantially the entire surface of the mirror surface portion 10 and, on the glass surface portion 13, approximately 2/3 of the rear surface side. And a normal visibility portion deposited layer 14.

The view angle enlarging portion 12 has a concave portion 9 formed approximately one-third below the mirror holder 9.
a, a compound curved surface portion 15 having a curved surface that is convexly curved to enlarge the viewing angle of the rear field of view is provided.

The composite curved surface portion 15 is mainly composed of a glass surface portion 16 and a composite curved surface portion deposited layer 17 formed on the back surface side of the glass surface portion 16.

An electrochromic (gel) layer 18 serving as a reflectance changing layer for changing the transmittance by energization is interposed between the composite curved surface portion 15 and the glass surface portion 13 in the viewing angle expanding portion 12. Is provided.

The electrochromic layer 18 is surrounded by a sealing member 19 at its periphery, and in a normal state,
The transmittance is reduced, and the reflectance of the viewing angle widening portion 12 is reduced as compared with other mirror surfaces. Then, when a predetermined amount of voltage is applied, the electrochromic layer 18 improves the transmittance to improve the reflectivity of the viewing angle widening portion 12.

The electrochromic layer 18 has + and-electrodes on the front surface 18a and the rear surface 18b, and as shown in FIG. These front part 18a and rear part 18
b are connected to the respective electrodes.

The power supply control section 20 is connected to a shift lever section 22 of the automatic transmission, and when the shift lever section 22 is selected to the R range (reverse), the front section 18a and the rear section are provided. A predetermined amount of voltage is applied to the electrode 18b.

Next, the operation of the first embodiment will be described.

In the mirror structure of the rear-view mirror according to the first embodiment, in a normal state in which the driver selects the shift lever section 22 in the driver's seat and selects a range other than the R range, such as a vehicle forward state, The viewing angle enlarging unit 12 is configured to have a lower reflectance than the normal viewing unit 11 which is another mirror surface.

In a normal state other than when the vehicle is moving backward, since no current is supplied, the transmissivity of the electrochromic layer 18 is low, and the reflectance of the viewing angle magnifying portion 12 is reduced, and an enlarged image behind the vehicle is enlarged. Is darkened.

For this reason, even if the line of sight shifts from the normal field of view 11 to the field of view angle enlarging section 12, an image that is enlarged and distorted appears dark and appears mainly. The image on the rear of the vehicle, which is projected at approximately the same magnification, is visually recognized, and there is little discomfort.

Further, when the driver selects the shift lever portion 22 in the driver's seat and selects the R range in which the vehicle moves backward, the energization control portion 20 controls the wiring 21
Through the electrochromic layer 1
8 are applied to the + and-electrodes on the front surface 18a and the rear surface 18b.

The electrochromic layer 18 provided in the viewing angle expanding section 12 has an increased transmittance when energized.

As a result, the driver can clearly see the image of the lower part of the rear of the vehicle, which is captured by the viewing angle magnifying unit 12, so that the driver can confirm the safety around the vehicle by looking at the viewing angle magnifying unit 12. You can go backwards while doing.

As described above, during normal running of the vehicle, the reflectivity of the viewing angle enlarging unit 12 is reduced, so that the enlarged and distorted image is darkened and the transmittance is improved as necessary. By improving the reflectance of the viewing angle enlargement unit 12, the image captured on the viewing angle enlargement unit can be clearly seen and visually recognized.

Accordingly, the door mirror 8 with less discomfort during normal running of the vehicle can be provided while ensuring visibility over a wide range by the viewing angle expanding section 12. Particularly when the vehicle is running, it is difficult to see the background such as the ground flowing at a high speed, which is captured by the viewing angle expansion unit 12 having the viewing angle expanded to the lower rear of the vehicle, so that it is possible to prevent the driver from feeling uncomfortable. it can.

Further, the viewing angle enlarging section 12 having the lowered transmittance clearly separates the boundary between the normal viewing section 11 and the normal viewing section 11. Therefore, it is not necessary to draw a boundary line for displaying the boundary.

Therefore, it is possible to suppress an increase in manufacturing cost.

Further, in the first embodiment, an electrochromic (gel) layer 18 as a reflectance changing layer for changing the transmittance by applying a current is interposed between the composite curved surface portion 15 and the glass surface portion 13. Therefore, the image behind the vehicle is dimmed twice, when passing through the complex curved surface portion 15 and when passing through the complex curved surface portion 15 before being seen by the driver. . Therefore, the reflectivity is preferably reduced.

[0041]

Second Embodiment FIG. 3 shows a mirror structure of a rear-view mirror according to a second embodiment of the present invention. Note that members that are the same as or equivalent to those in the first embodiment are given the same reference numerals and described.

In the second embodiment, a mirror portion 24 of a door mirror 23 provided as a rear-view mirror provided on a vehicle door panel portion has a normal visibility portion 25 in which a Cl or Al vapor-deposited layer having a high reflectivity is formed on the back surface side. And a viewing angle enlarging section 26 in which a Cl or Al vapor-deposited layer containing impurities is formed on the back side.
And, is mainly composed of.

Next, the operation of the second embodiment will be described.

In the second embodiment, the viewing angle enlarging section 26 lowers the transmittance in the normal state as compared with the normal viewing section 25 which is another part of the mirror surface.

Other structures and operations are substantially the same as those in the first embodiment, and therefore the description thereof is omitted.

[0046]

Third Embodiment FIG. 4 shows a mirror structure of a rear-view mirror according to a third embodiment of the present invention. The same or equivalent members as those in the first and second embodiments will be described with the same reference numerals.

In the third embodiment, a mirror surface portion 28 of a door mirror 27 as a rearview mirror provided on a vehicle door panel portion has a normal visibility portion 25 having a high reflectance and a colored nylon film 30 on the surface side. And a viewing angle expanding section 29 provided.

The other constructions and operations are substantially the same as those in the first or second embodiment, so that the description will be omitted.

As described above, the first to third embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the first to third embodiments, and the design may be changed without departing from the gist of the present invention. Even this is included in the present invention.

For example, in the first embodiment, the reflectivity of the viewing angle enlarging unit 12 is increased when the shift lever unit 22 is selected to the R range. However, a separate switch is provided to arbitrarily adjust the reflectivity. It may be increased or decreased. In the third embodiment, the reflectance of the viewing angle widening portion 29 is reduced by attaching the colored nylon film 30. However, the present invention is not limited to this. For example, a colored vinyl film is attached. As a result, the viewing angle expanding section 29
May be reduced.

In each of the first to third embodiments, the substantially lower third portion of the mirror portions 10, 24, and 28 is used as the viewing angle expanding portion 12, 26, and 29. May be any as long as it is formed on a part of the mirror surface.

The compound curved surface portion 15 such as the viewing angle expanding portion 12 has a curved surface which is convexly curved so as to enlarge the viewing angle in the rear view. The present invention is not limited to this, and may have a configuration in which the viewing angle of the rear view is increased by having a curved surface that is stepwise bent.

[0053]

As described above, according to the first aspect of the present invention, the viewing angle enlarging portion is configured so that the reflectance is reduced as compared with other mirror surfaces. I have.

For this reason, even if the line of sight deviates from the viewing angle enlargement portion, the image that is enlarged and distorted appears to appear dark, so that there is little discomfort. In particular, when the vehicle is running, the background such as the ground flowing at a high speed in the viewing angle widening portion becomes difficult to see, so that the driver does not feel discomfort. Further, since the viewing angle enlarged portion and the other mirror surface portion are clearly separated and seen, it is not necessary to provide a separate boundary line for distinguishing the viewing angle enlarged portion.

According to the second aspect of the present invention, when a current is applied to the reflectance changing layer provided in the viewing angle expanding portion, the transmittance changes.

For this reason, if necessary, the transmittance of the viewing angle magnifying portion is increased to increase the reflectivity of the viewing angle magnifying portion so that the magnified image can be clearly seen and visually recognized. Can be done.

According to the third aspect,
The reflectance changing layer is energized when the vehicle moves backward to improve the transmittance.

Therefore, when the vehicle moves backward, the reflectivity of the viewing angle expanding portion is automatically increased, and the image of the viewing angle expanding portion can be clearly captured and visually recognized.

In a normal state other than when the vehicle is moving backward, since the power is not supplied, the transmittance of the reflectance changing layer is low, the reflectance of the viewing angle magnifying portion is reduced, and the image of the viewing angle magnifying portion is darkened. This reduces discomfort and discomfort during traveling of the vehicle.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a mirror structure of a rearview mirror according to a first embodiment of the present invention, taken along a line AA in FIG. 2;

FIG. 2 is a block diagram illustrating a mirror structure of a rear-view mirror according to the first embodiment and illustrating an overall configuration;

FIG. 3 is a front view of a door mirror, showing a mirror structure of a rear-view mirror according to a second embodiment;

FIG. 4 is a front view of a door mirror, showing a mirror structure of a rear-view mirror according to a third embodiment;

FIG. 5 is a perspective view showing a mirror structure of a conventional rear-view mirror.

[Explanation of symbols]

Reference Signs List 8 door mirror (mirror mirror) 10 mirror surface section 11 normal visibility section 12 viewing angle expanding section 18 electrochromic layer (reflectance changing layer)

Claims (3)

[Claims] 1. A mirror structure of a rear-view mirror, comprising a mirror angle portion provided on a part of a mirror surface to bend or curve so as to increase a viewing angle, wherein the mirror portion has a reflectance which is different from that of another mirror surface. The mirror structure of the rearview mirror, characterized in that it is lowered compared to the part. 2. A mirror structure of a rearview mirror according to claim 1, wherein said viewing angle enlarging portion is provided with a reflectance changing layer for changing a transmittance by applying a current. 3. The mirror structure of a rearview mirror according to claim 2, wherein said reflectance changing layer is energized when the vehicle moves backward to increase the transmittance.