JPH1081177A - Vehicular glare-proof mirror - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce clear visual images of corresponding to areas behind a vehicle with a simple structure. SOLUTION: An inner-mirror body 1 is provided at its front with a front glass 6 and an inner glass 7 having a reflecting film 13 on its back. The inner glass 7 is fitted on a turning member for its swing motion and is turned in a single operation by a selector lever. Since the tip of a positioning edge for fixing the inner glass 7 slightly projects from the front of the inner glass 7, the inner glass 7 is not brought into direct contact with the front glass 6 to thereby prevent circular interference fringes and thus remarkably improve the visibility.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-glare mirror for a vehicle which glares light from a headlight of a rear vehicle during night driving.

[0002]

2. Description of the Related Art When a rear-view mirror such as an inner mirror mounted on a vehicle directly reflects light of a headlight from a following vehicle during night driving, a driver may be dazzled by this light. The use of the anti-glare mirror prevents glare caused by light from the headlights. As a conventional anti-glare mirror, for example, a mirror using a prism mirror is known, and FIG. 6 is an explanatory view schematically showing an example using the prism mirror. 5 mm, and the lower thickness t2 is about 2 mm. FIG. 3A shows a normal state, and FIG.
Indicates a state at the time of anti-glare, and as shown in FIG. 3A, in a normal state, the reflecting surface 101 is oriented substantially in the vertical direction. The light path shown) is reflected and directed into the driver's field of view. Accordingly, the driver can visually recognize the rear image reflected on the reflection surface 101.

[0003] Further, during night driving or the like, if light from headlights from a following vehicle is directly reflected by the reflecting surface 101 and introduced into the driver's field of view, it is dazzled. Tilt backward. Then, as shown in FIG. 2B, the reflection surface 101 is inclined, so that the rear image from the reflection surface 101 does not enter the field of view of the driver.
When 3 is oriented substantially vertically, the light reflected on the inclined surface 103 is guided to the driver's field of view. At this time, since the reflectance of the glass is lower than that of the reflection surface 101, the amount of light guided into the field of view is reduced, and accordingly,
The driver is not dazzled by the light from the headlights of the following vehicle.

[0004] As described above, by using the prism mirror 102 and raising and lowering the same, during daytime operation, FIG.
By setting the state shown in FIG. 2A and setting the state shown in FIG. 2B during night driving, dazzling can be prevented.

As another conventional example, there has been proposed a device which uses an electrochromic element or liquid crystal to change the reflectivity of a mirror to have an antiglare function.

[0006]

However, in the conventional example shown in FIG. 6, the light once reflected by the reflecting surface 101 is reflected by the inclined surface 103 as shown by the dotted line in FIG. There is a disadvantage that an image (secondary image) deviated from the regular reflection image (primary image) due to re-reflection is introduced into the driver's field of view and lacks clearness. In the case of using an electrochromic element, an electrode film is formed on a pair of glass substrates to enclose the electrochromic element, and the manufacturing process is complicated, and a control circuit and a drive circuit are required. Therefore, the cost is high.

Therefore, in order to solve such a problem,
Japanese Patent Application Laid-Open No. 61-241227 has been devised. FIG. 7 is an explanatory view showing the contents described in the official gazette. As shown in FIG. 7, this anti-glare mirror has a mirror surface formed by overlapping two acrylic front plates 104 and mirrors 105. And mirror 105
Can be tilted by magnetic attraction. Normally, the front plate 104 and the mirror 105 are overlapped with each other.
Is tilted so as to face upward, thereby preventing glare.

However, in the contents described in this publication, since the mirror 105 is tilted by using a magnetic attraction force, an electric control / drive circuit is required, and the mirror 105 and the front plate 104 are normally connected to each other. Since direct contact is made, it is difficult to make uniform contact, and an annular interference fringe may be generated in an image obtained by reflection at a portion contacted with a strong pressure, thereby deteriorating rear visibility. Also,
If the angle between the mirror 105 and the front plate 104 is shifted, problems such as generation of a double image occur.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an anti-glare system for a vehicle capable of clearly viewing an image from behind with a simple configuration. To provide a mirror.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an anti-glare mirror for a vehicle which obtains an anti-glare effect by changing the amount of reflected light of the mirror in accordance with the brightness of an image given from a rear view. A stay connected to the vicinity of the vehicle ceiling, a rear body connected to the stay, a mirror body rotatable at an arbitrary angle, a front glass attached to the front side of the mirror body, and an upper surface inside the mirror body. A pivoting member that is pivotally supported and capable of raising and lowering, A a glass mounting frame attached to the front surface of the rotating member and having a glass positioning edge formed in a peripheral portion, attached to the glass mounting frame, An inner glass having a reflective film formed on one side thereof, an upper end locked to a lower portion of the rotating member via an elastic member, and a lower end protruding outside the mirror body; And a switching lever for lowering the rotating member by operating the switching member.

The glass positioning edge protrudes from the front surface of the inner glass, and the protruding glass positioning edge is provided when the inner glass is positioned parallel to the front glass. Contacting the back surface of the vehicle. Further, the inner glass is generally oriented in a substantially vertical direction at normal times, and is lowered downward during anti-glare. Further, the inner glass is a surface mirror.

According to the present invention constructed as described above, the front glass and the inner glass are arranged in parallel on the front side of the mirror body, and the inner glass is fixed to the rotating member so that it can be raised and lowered. Have been. Therefore, by operating the switching lever, the rotating member can be easily rotated to incline the inner glass, thereby easily switching between the normal state and the anti-glare state. Further, since the positioning edge of the glass mounting frame projects more than the inner glass, the inner glass and the front glass do not directly contact each other, thereby preventing the occurrence of annular interference fringes. Furthermore, since the inner glass operates so as to face downward during antiglare, the driver does not have to see the end face of the inner glass and does not need to worry about the beauty of this part. Can be done.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are explanatory views showing an embodiment of an anti-glare mirror for a vehicle to which the present invention is applied. FIG. 1 is a front view, FIG. 2 is a cross-sectional view in a normal state, and FIG. Respectively show cross-sectional views. As shown in FIG. 2, the anti-glare mirror has a mirror body 1 serving as a housing for molding the entire anti-glare mirror, and a spherical pivot engaging with a spherical concave portion 2 formed on the back surface of the mirror body 1. 3 and a cover 5 covering a spherical joint portion composed of a spherical concave portion 2 and a spherical pivot 3. Further, a front glass 6 is fixed to a front side inside the mirror body 1, and a rear side thereof. Is provided with an inner glass 7 fixed to a mounting frame 8 of a rotating member 9. The rotating member is connected to a switching lever 10 via a spring 11 (see FIG. 1), and an upper end is pivotally supported by a rotating shaft 14 on the top end of the mirror body 1 so as to be able to move up and down. The lower end of the switching lever 10 projects outside the mirror body 1 so that the driver can easily operate it.

FIG. 4 is an explanatory view showing the details of the joint between the front glass 6 and the inner glass 7. As shown in FIG. 4, a reflective film 13 is formed on the front surface of the inner glass 7 by vapor deposition, sputtering, or the like. , And light can be reflected on this surface. A mounting frame 8 is formed on the front side of the rotating member. A positioning edge 12 protrudes around the mounting frame 8, and the inner glass 7 is fixed. At this time, the positioning edge 12 slightly protrudes from the surface of the inner glass 7. Therefore, the front glass 6 and the inner glass 7 do not come into direct contact with each other, and there is a slight gap as much as the positioning edge 12 protrudes.

Next, the operation of the present embodiment configured as described above will be described. During normal driving such as during the daytime, the headlights and the like from the following vehicle do not dazzle, so that the normal state shown in FIG. 1 is set. That is, the front glass 6 and the inner glass 7 are arranged in parallel at a distance corresponding to the protrusion of the positioning edge 12. Therefore, the visual field light incident on the inner mirror is reflected on the reflective film 13 on the front surface of the inner glass 7 and is introduced into the driver's visual field, so that the driver can visually recognize the rear visual field. As shown in FIG. 5, the front glass 6 and the inner glass 7 are both formed to have a thickness of about 2 mm, so that the deviation between the primary image and the secondary image is very small, so that a clear image is obtained. Can be obtained.

On the other hand, when the light from the headlights of the following vehicle is dazzling or dazzling, such as at night, when the switching lever 10 is pulled forward, as shown in FIG. As a result, the inner glass 7 also tilts downward.
Therefore, the image from the rear view is reflected not by the inner glass 7 but by the front glass 6 and guided into the driver's view.
Accordingly, the amount of reflected light is smaller than when the light is reflected by the reflective film 13, so that glare can be reduced and an antiglare effect can be obtained.

As described above, according to the present embodiment, the normal state and the anti-glare state can be changed by switching the elevation angle of the inner glass 7 disposed on the back side of the front glass 6. Since each of the glasses 6 and 7 has a thickness of about 2 [mm], the difference between the re-reflection image and the regular reflection image is small, and clear visibility without a double image can be obtained.
Further, since it is possible to easily switch between the normal state and the anti-glare state only by operating the switching lever 10 in the front-rear direction, the operation can be performed in the same manner as when a conventional prism mirror is used. Is good. Further, since the anti-glare effect can be obtained without requiring a complicated electric circuit such as a control circuit, the configuration is simple and the reliability is high.

The positioning edge 12 of the mounting frame 8 is also provided.
Is slightly protruded from the inner glass surface, so that the front glass 6 and the inner glass 7 do not come into direct contact with each other, thereby preventing the occurrence of annular interference fringes, and thus visual recognition. Performance can be improved. In addition, since the inner glass 7 on which the reflective film 13 is formed tilts so as to face downward during anti-glare, the end face of the inner glass 7 is not visible to the driver, and the beauty of this part is not considered. This eliminates the need for a fine finishing process. Further, the spherical concave portion 2 and the spherical pivot 3
Is arranged outside the mirror body and is covered by the cover 5, and the inner glass 7 is tilted downward, so that dirt and dust enter the inside of the mirror body 1. Since there is no dust and no dust or dust adheres to the inner glass 7 surface, the visibility is good.

[0019]

As described above, according to the present invention,
Since the inner glass can be tilted with a simple operation, operability becomes easy, and the tip of the positioning edge of the glass mounting frame for fixing the inner glass is slightly protruded from the front side of the inner glass. Therefore, the front glass and the inner glass do not come into direct contact with each other, and the occurrence of annular interference fringes can be prevented. Furthermore, since the inner glass is configured to face downward during anti-glare, adhesion of dust or the like to the inner glass surface can be prevented, and visibility can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an anti-glare mirror for a vehicle according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the anti-glare mirror for a vehicle according to one embodiment of the present invention, showing a normal state.

FIG. 3 is a side sectional view of the anti-glare mirror for a vehicle according to one embodiment of the present invention, showing a state at the time of anti-glare.

FIG. 4 is an explanatory view showing details of a joint portion between the front glass and the inner glass.

FIG. 5 is an explanatory diagram showing a path of light guided to a driver when the anti-glare mirror of the embodiment is set at a normal time.

FIG. 6 is an explanatory view showing a light path when a prism mirror is used according to a conventional example.

FIG. 7 is an explanatory view showing a configuration of an anti-glare mirror that tilts a mirror surface by an attractive force of a magnet according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mirror body 2 Spherical recess 3 Spherical pivot 4 Stay 5 Cover 6 Front glass 7 Inner glass 8 Mounting frame 9 Rotating member 10 Switching lever 11 Spring 12 Glass positioning edge 13 Reflective film 14 Rotation axis

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[Procedure amendment]

[Submission date] September 20, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an anti-glare mirror for a vehicle which obtains an anti-glare effect by changing the amount of reflected light of the mirror in accordance with the brightness of an image given from a rear view. A stay connected to the vicinity of the vehicle ceiling, a rear body connected to the stay, a mirror body rotatable at an arbitrary angle, a front glass attached to the front side of the mirror body, and an upper surface inside the mirror body. a rotating member that is capable of elevation movement is journalled, before Symbol glass mounting frame glass positioning edge is formed around portion attached to the front surface of the rotating member, mounted on the glass mounting frame, An inner glass having a reflective film formed on one side thereof, an upper end locked to a lower portion of the rotating member via an elastic member, and a lower end protruding outside the mirror body; It is characterized by having a switching lever for elevating said rotating member by operating.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Next, the operation of the present embodiment configured as described above will be described. During normal driving such as in the daytime, since the light of the headlights and the like from the following vehicle does not dazzle, the normal state shown in FIG. 2 is set. That is, the front glass 6 and the inner glass 7 are arranged in parallel with each other by the distance between the protrusions of the positioning edge 12. Therefore, the visual field light incident on the inner mirror is reflected on the reflective film 13 on the front surface of the inner glass 7 and is introduced into the driver's visual field, so that the driver can visually recognize the rear visual field. As shown in FIG. 5, the front glass 6 and the inner glass 7 are both formed to have a thickness of about 2 [mm], so that the deviation between the primary image and the secondary image is very small, so that a clear image is obtained. Can be obtained.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016] On the other hand, the light from the headlights at night or the like following vehicle glare, when such dazzling, as shown in FIG. 3 Pulling the switching lever 10 to the front, around the rotation shaft 14 is fixed member 9 As a result, the inner glass 7 also tilts downward.
Therefore, the image from the rear view is reflected not by the inner glass 7 but by the front glass 6 and guided into the driver's view.
Accordingly, the amount of reflected light is smaller than when the light is reflected by the reflective film 13, so that glare can be reduced and an antiglare effect can be obtained.

Claims (4)

[Claims] 1. An anti-glare mirror for a vehicle, which obtains an anti-glare effect by changing the amount of reflected light of a mirror in accordance with the brightness of an image given from a rear view, comprising: a stay connected to a vicinity of a vehicle ceiling; A mirror body connected to the stay and rotatable at an arbitrary angle; a front glass attached to a front side of the mirror body; and a rotating member pivotally supported on an upper surface in the mirror body and capable of elevating. A glass mounting frame attached to the front surface of the rotating member and having a glass positioning edge formed in a peripheral portion; an inner glass attached to the glass mounting frame and having a reflective film formed on one surface; The lower part of the rotating member is locked via an elastic member, and the lower end portion is configured to protrude outside the mirror body.The lower end portion is operated in the front-rear direction to lower the rotating member. Vehicle anti-glare mirror and having a switching lever, a. 2. The method according to claim 1, wherein the edge portion for positioning the glass projects from the front surface of the inner glass, and contacts the rear surface of the front glass when the inner glass is positioned parallel to the front glass. The anti-glare mirror for a vehicle according to claim 1. 3. The anti-glare mirror for a vehicle according to claim 1, wherein the inner glass is oriented substantially vertically in a normal state, and descends downward during anti-glare. 4. The anti-glare mirror for a vehicle according to claim 1, wherein the inner glass is a surface mirror.