JPH10194044A - Rear-view check device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a succeeding car to be sufficiently identified by setting up the radius of curvature of a convex mirror to grow larger in proportion as changing from a part to reflect a nearby place in the rear of a car body to a part to reflect a distant place in the rear of the car body. SOLUTION: The lower part of a convex mirror 1 set in changing the radius of curvature is a neighboring mirror part A reflecting the nearby side of a car body, and at a lower part of this neighboring mirror part A, there is a radius of curvature Ra capable of reflecting a nearby spot between both symmetrical parts of a rear bumper. An upper part of the neighboring mirror part A is a distant mirror part B reflecting a distant side in the rear of the car body, and at an upper end of this distant mirror part B, there is a radius of curvature Rb. In this connection, even in a normal convex mirror 4 being uniform in the radius of curvature has the radius of curvature Ra reflecting the vicinity between both symmetrical parts of the rear bumper 3. Likewise, in proportion as going toward the upper end of the distant mirror part B from the lower end of the neighboring mirror part A, the radius of curvature Rb is set so as to glow larger than the radius of curvature Ra (Ra<Rb), namely so as to make it come close to a yet more plane surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear view confirmation device which allows a driver to confirm a rear blind spot of a vehicle which cannot be confirmed by a side mirror or a room rearview mirror. In the rear distant place, it is possible to enlarge and confirm this rear distant place rather than adopting a regular convex mirror with a uniform radius of curvature,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device that makes it easy to check the distance or size of an object located in a rear blind spot from a vehicle body.

[0002]

2. Description of the Related Art Japanese Patent Application No. 5-101767 discloses a rear view confirmation device for confirming a rear blind spot of a vehicle which cannot be confirmed by a side mirror or a room rearview mirror. The rear confirmation device allows the driver to confirm the rear of the vehicle via the convex mirror and the plane mirror. In this case, a convex mirror is used to expand the field of view in the left and right direction in the immediate vicinity of the rear of the own vehicle and to increase the visibility in the distant rear, but the left and right width of the object (the following vehicle) is reduced. Will be reflected. For example, a normal car can be identified only up to about 30 m behind using a normal convex mirror having a uniform radius of curvature of about 165 mm, and even a car far away from the rear. Can no longer be identified. However, when considering the braking distance on an expressway, it is uneasy that a car cannot be identified at a distance more than about 30 m. There is a risk that the vehicle will collide when the vehicle is stopped in an emergency, and when a following vehicle is recognized near 30 m, it is necessary to avoid the approach by changing lanes.

[0003]

Therefore, in the present invention,
In the far distant direction, the size of the image of the following vehicle in the left-right direction can be checked so that it can be larger than when a convex mirror with a uniform radius of curvature is used. The purpose is to be able to.

[0004]

According to a first aspect of the present invention, there is provided a vehicle body having a rear blind spot which cannot be recognized by a side mirror or a room rearview mirror. And a rear flat mirror 2 mounted near the rear of the vehicle body 3 facing the mirror surface of the convex mirror 1 near the rear of the vehicle body 3, and a rear flat mirror 2 Is a vehicle mounted with a convex mirror 1 and a rear plane mirror 2 so that the driver 5 can look back and look directly at the rear plane mirror 2 so that the driver 5 can see an object behind. Is set such that the radius of curvature of the convex mirror 1 is gradually increased from a portion that reflects the area near the rear of the vehicle body 3 to a part that reflects the distance from the rear of the vehicle body 3. It is characterized in that. As described above, since the radius of curvature of the convex mirror 1 is set so as to gradually increase from a portion reflecting near the rear of the vehicle body 3 to a portion reflecting far away from the vehicle body 3, an object located far away from the rear of the vehicle body 3 The (following vehicle) is enlarged and reflected on the convex mirror 1 having a changed radius of curvature as compared with an image obtained when a normal convex mirror having a uniform radius of curvature is employed, so that the subsequent vehicle located rearward and farther than the normal convex mirror The driver 5 turns around and sees the rear plane mirror 2 clearly.

According to a second aspect of the present invention, a scale 12 is displayed on one of the convex mirror 1 and the rear plane mirror 2 to indicate the distance to the vehicle body 3 of a rear object reflected on the mirror surface. As described above, since the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3 is displayed on the convex mirror 1 or the rear plane mirror 2, the following vehicle positioned at the rear blind spot based on the scale 12 is displayed. The driver 5 turns and looks at the rear plane mirror 2 to see at a glance the distance to the vehicle body 3.

According to the third aspect of the present invention, a vehicle having a rear blind spot which cannot be recognized by a side mirror or a room rearview mirror is mounted near the rear portion of the vehicle body 3 toward the rear near the rear left and right portions of the vehicle body 3. A convex mirror 4 having a uniform radius of curvature, and a rear concave mirror 10 mounted near the rear of the vehicle body 3 relative to the mirror surface of the convex mirror 4, and the rear concave mirror 10 is located at a position where the driver 5 can look back and look straight. In a rear-viewing device for a vehicle in which the convex mirror 4 and the rear concave mirror 10 are mounted so that the driver 5 can see the mirror surface of the rear concave mirror 10 and check a rear object, the radius of curvature of the rear concave mirror 10 is mounted. Is set so as to be gradually reduced from a portion that reflects the area near the rear of the vehicle body 3 to a part that reflects the area far away from the vehicle body 3. As described above, the radius of curvature of the rear concave mirror 10 is set so as to gradually decrease from a portion that reflects the vicinity of the rear of the vehicle body 3 to a portion that reflects the rear of the vehicle body 3. The following car located at
Compared to the image when a normal concave mirror having a uniform radius of curvature is adopted, the rear vehicle 10 is enlarged and greatly reflected on the rear concave mirror 10 having the changed radius of curvature. 5 is a rear concave mirror 10
You can see clearly.

According to the invention of claim 4, the rear concave mirror 10
Alternatively, a scale 12 is displayed on one of the convex mirrors 4 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3. In this way, the rear concave mirror 10 or the convex mirror 4 displays the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3, so that the following vehicle positioned at the rear blind spot based on the scale 12 is displayed. The driver 5 can turn and look at the rear concave mirror 10 to see at a glance the distance to the vehicle body 3.

According to the fifth aspect of the present invention, a vehicle having a rear blind spot which cannot be recognized by the side mirror or the rear view mirror is mounted near the rear portion of the vehicle body 3 toward the rear near the rear left and right portions of the vehicle body 3. Convex mirror 1;
A rear flat mirror 2 mounted near the rear of the vehicle body 3 relative to the mirror surface of the convex mirror 1 and a front flat mirror 9 mounted near the front of the vehicle body 3 with the mirror surface facing the driver 5 while facing the rear flat mirror 2 In order to allow the driver 5 to check the object behind by directly looking at the front plane mirror 9, the convex mirror 1, the rear plane mirror 2, and the rear plane confirmation apparatus for a vehicle to which the front plane mirror 9 is attached. 1 is characterized in that the radius of curvature is set so as to gradually increase from a portion of the vehicle body 3 near the rear to a portion of the vehicle body 3 far away from the rear. As described above, the radius of curvature of the convex mirror 1 is set so as to gradually increase from a portion reflecting near the rear of the vehicle body 3 to a portion reflecting far away from the vehicle body 3. The located object (the following vehicle) is enlarged and reflected on the convex mirror 1 having the changed radius of curvature as compared with an image obtained when a normal convex mirror having a uniform radius of curvature is adopted, so that it is farther rearward than the normal convex mirror. The driver 5 can clearly see the following vehicle located at the front flat mirror 9 while looking at the front plane mirror 9 in the normal driving posture.

According to a sixth aspect of the present invention, a scale 12 is displayed on one of the convex mirror 1 and the rear flat mirror 2 to indicate the distance to the vehicle body 3 of a rear object reflected on the mirror surface. As described above, since the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3 is displayed on the convex mirror 1 or the rear plane mirror 2, the following vehicle positioned at the rear blind spot based on the scale 12 is displayed. The driver 5 can see at a glance the distance to the vehicle body 3 by looking at the front plane mirror 9 while keeping the normal driving posture.

According to the seventh aspect of the present invention, a vehicle having a rear blind spot which cannot be recognized by a side mirror or a room rearview mirror is mounted near a rear portion of the vehicle body 3 toward a rear portion between rear right and left portions of the vehicle body 3. A convex mirror 4 having a uniform radius of curvature, a rear concave mirror 10 mounted near the rear of the vehicle body 3 relative to the mirror surface of the convex mirror 4, and a mirror 5 facing the driver 5 side with the mirror surface facing the rear concave mirror 10. The convex mirror 4, the rear concave mirror 10, and the front flat mirror 9 are mounted so that the driver 5 can confirm an object behind by directly looking at the front flat mirror 9. In the apparatus for checking the rear of a vehicle, the radius of curvature of the rear concave mirror 10 is gradually reduced from a portion that reflects the area near the rear of the vehicle body 3 to a part that reflects the distance from the rear of the vehicle body 3. It is characterized in that the set. As described above, the radius of curvature of the rear concave mirror 10 is set so as to gradually decrease from a portion that reflects the vicinity of the rear of the vehicle body 3 to a portion that reflects the rear of the vehicle body 3. Is larger than the image when a normal concave mirror having a uniform radius of curvature is adopted, and is enlarged and reflected on the rear concave mirror 10 having a changed radius of curvature, so that the following vehicle is located farther rearward than the normal concave mirror. The driver 5 can clearly see the located following vehicle by looking at the front plane mirror 9 in the normal driving posture.

According to the invention of claim 8, the rear concave mirror 10
Alternatively, a scale 12 is displayed on one of the convex mirrors 4 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3. In this way, the rear concave mirror 10 or the convex mirror 4 displays the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3, so that the following vehicle positioned at the rear blind spot based on the scale 12 is displayed. The driver 5 moves the distance to the vehicle body 3 with the front plane mirror 9 in the normal driving posture.
You can see at a glance.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment in which a convex mirror 1 set by changing a radius of curvature and a rear plane mirror 2 are attached to a vehicle body 3 having no window provided on the rear surface. It is a rear view. In the figure, 3a is a rear bumper, 5 is a driver, and 6 and 6 are side mirrors in FIG. The convex mirror 1 set by changing the radius of curvature is
The mirror is tilted slightly downward so that the rear bumper 3a is reflected at the lower end of the mirror surface, and is directed toward the rear flat mirror 2 while being directed rearward near the rear left and right portions of the vehicle body 3, and toward the rear upper right portion as viewed from the rear surface of the vehicle body 3. Attached near the corner. The rear plane mirror 2 was mounted on the upper outside rear side of the right side when viewed from the rear of the vehicle body 3 while facing this mirror surface to the front surface of the vehicle body 3 while facing the mirror surface of the convex mirror 1 set by changing the radius of curvature. In FIG. 1, two optical paths hit the mirror surface of the convex mirror 1 set by changing the radius of curvature. The optical path hitting the lower end of this mirror surface is a nearby optical path La which is an optical path from the rear bumper 3a of the vehicle body 3. The optical path hitting the upper end of the mirror surface is a distant optical path Lb which is an optical path of a portion farther rearward than the vehicle body 3. Near optical path La
The distant optical path Lb is reflected from the convex mirror 1 having a different radius of curvature to the rear plane mirror 2, and the driver 5 turns backward and checks the rear plane mirror 2.

FIG. 3 is a longitudinal sectional view of the convex mirror 1 in which the radius of curvature is set to be different from that of the first embodiment shown in FIG. 1, and also a sectional view of a normal convex mirror 4 having a uniform radius of curvature. . In the figure, below the mirror surface of the convex mirror 1 set by changing the radius of curvature is a nearby mirror surface portion A that reflects the vicinity of the vehicle body, and a lower portion of the nearby mirror surface portion A is a curvature that can show the vicinity between the left and right portions of the rear bumper 3a. It has a radius Ra. Near mirror surface A
Above is a far mirror surface portion B that reflects the rear far side of the vehicle body 3, and the upper end portion of the far mirror surface portion B has a radius of curvature Rb. Note that the ordinary convex mirror 4 having a uniform radius of curvature also has a radius of curvature Ra that reflects the vicinity between the left and right portions of the rear bumper 3a. In addition, as the radius of curvature Rb gradually becomes larger than the radius of curvature Ra from the lower end portion of the near mirror surface portion A toward the upper end portion of the far mirror surface portion B, (Ra <Rb), that is, it is set to be closer to a flat surface. Have been. The larger the radius of curvature is, the larger the object farther from the rear is projected, but the smaller the area reflected is. The degree of increase in the radius of curvature in this embodiment is, for example, a radius of curvature that allows a small car behind 80 m to be clearly recognized.

FIG. 4 is a front view of the convex mirror 1 of the first embodiment shown in FIG. 1, which is set by changing the radius of curvature, when viewed from the rear flat mirror 2 attached to the vehicle body 3, and shows a front view of the mirror. The figure also shows an ordinary convex mirror 4 having a uniform radius of curvature. In the figure, the rear surface of the rear plane mirror 2 is shown. In the figure, images 7a, 7a of the left and right traveling lanes are provided on the mirror surface of the convex mirror 1 set by changing the radius of curvature.
Is shown across the image 8a of the following vehicle. The images 7b, 7b of the left and right traveling lanes are also shown on the ordinary convex mirror 4 having a uniform radius of curvature with the image 8b of the following vehicle interposed therebetween.
In this case, the convex mirror 1 having a different radius of curvature and the ordinary convex mirror 4 having a uniform radius of curvature are provided with a rear bumper 3a because the radius of curvature does not change much below each mirror surface.
The size reflected on each mirror surface of the image 3b is almost the same. However, in the convex mirror 1 set by changing the radius of curvature, the image 8a of the following vehicle has a smaller inter-vehicle distance between the following vehicle and the vehicle body 3 than the image 8b of the following vehicle reflected on a normal convex mirror 4 having a uniform radius of curvature. Same, but large and clear. Also, the coincidence points above the traveling lane images 7a, 7a reflected on the mirror surface of the convex mirror 1 set by changing the radius of curvature are the same as those of the traveling lane images 7b, 7b reflected on the mirror surface of the ordinary convex mirror 4 having a uniform radius of curvature. The mirror surface is reflected more upward than the upper coincidence point. That is, the convex mirror 1 having a constant outer dimension and having a different radius of curvature has almost the same outer dimensions as the normal convex mirror 4 having a uniform radius of curvature, but is located farther rearward from the rear bumper 3a. The rear blind spot is projected. The driver 5 can turn around and check the image of the rear blind spot reflected on the rear plane mirror 2 and reflected from the convex mirror 1 set by changing the radius of curvature.

Next, a second embodiment in which a front flat mirror 9 is provided in addition to the device configuration of the convex mirror 1 and the rear flat mirror 2 which are set by changing the radius of curvature in the first embodiment of FIG. A description will be given based on FIGS. FIG. 5 is a right side view of the vehicle body 3 in the second embodiment in which the convex mirror 1, the rear plane mirror 2, and the front plane mirror 9 are set to have different radii of curvature. The front flat mirror 9 was mounted on the upper part of the driver's side mirror 6 with the mirror surface facing the driver 5 while facing the rear flat mirror 2. As shown in the figure,
The convex mirror 1, the rear flat mirror 2, and the front flat mirror 9, which are set by changing the radius of curvature, are mounted in parallel with the driver 5 at substantially the same height.

FIG. 6 is a front view of the front flat mirror 9 of the second embodiment of FIG. 5 as seen from the driver 5 side. In the figure, the rear plane mirror 2 and the convex mirror 1 set by changing the radius of curvature are reflected on the mirror surface of the front plane mirror 9, and the rear bumper 3a at the rear blind spot and the following vehicle are reflected across the traveling lane. I have. In the figure, 2a is an image of the rear plane mirror 2, 1a is an image of the convex mirror 1 set by changing the radius of curvature, 3c is an image of the rear bumper 3a, 8c is an image of the following vehicle, and 7c and 7c are images of the traveling lane. Convex mirror 1 with different radius of curvature
In the case of the device configuration including the rear flat mirror 2 and the front flat mirror 9, the driver 5 can check the rear blind spot by directly looking at the mirror surface of the front flat mirror 9 in a normal driving posture.

Next, instead of employing the rear flat mirror 2 in the first embodiment of FIG. 1, a rear concave mirror 10 having a different radius of curvature is employed, and the convex mirror 1 having a different radius of curvature is employed. Next, a third embodiment in which the apparatus is configured using a normal convex mirror 4 having a uniform radius of curvature will be described with reference to FIGS.
It will be described based on. FIG. 7 is a front view of the rear concave mirror 10 having a different radius of curvature and attached to the vehicle body 3 when viewed from the driver 5 side, and also shows a normal concave mirror 11 having a uniform curvature. ing. The ordinary convex mirror 4 having a uniform radius of curvature reflects the rear bumper 3a, and has a smaller outer dimension than the rear concave mirror 10. Further, the rear convex mirror 10 having a different radius of curvature is used. Within the minimum focal length of the mirror surface, it is mounted near this minimum focal length point. Therefore, the image of the ordinary convex mirror 4 having a uniform radius of curvature is enlarged and reflected on the rear concave mirror 10 set by changing the radius of curvature. In this case,
The external dimensions of the ordinary convex mirror 4 having a uniform radius of curvature are formed smaller than the rear concave mirror 10, so that it does not require much space for mounting on the vehicle body 3.

FIG. 8 is a longitudinal sectional view of the rear concave mirror 10 having a different radius of curvature and a longitudinal sectional view of the rear concave mirror 11 having a uniform radius of curvature. In the figure, below the mirror surface of the rear concave mirror 10 which is set by changing the radius of curvature is a nearby mirror surface portion C which reflects the vicinity of the vehicle body, and below this near mirror surface portion C, a rear bumper which is reflected on the convex mirror 4 having a uniform radius of curvature. 3a has a radius of curvature Rc for projecting an image between the left and right portions. The lower portion of the mirror surface of the rear concave mirror 11 having a uniform radius of curvature also has a radius of curvature Rc for displaying an image between the left and right portions of the rear bumper 3a reflected on the convex mirror 4 having a uniform radius of curvature. Above the near mirror portion C is a far mirror portion D that reflects the far rear side of the vehicle body 3, and the upper end portion of the far mirror portion D has a radius of curvature Rd. In addition, (Rc> Rd) is set so that the radius of curvature Rd becomes smaller gradually than the radius of curvature Rc toward the upper end of the distant mirror surface portion D as it approaches a flat surface at the lower end portion of the near mirror surface portion C. The smaller the radius of curvature is, the more the object farther to the rear is projected, but the smaller the area reflected is. The degree of decrease in the radius of curvature in this embodiment is, for example, a radius of curvature that allows a small car behind 80 m to be clearly recognized. In FIG. 7, on the mirror surface of the rear concave mirror 10 set by changing the radius of curvature, images 7d, 7
d is shown across the image 8d of the following vehicle. In addition, images 7e, 7e of the driving lanes on the left and right of the vehicle width are also shown on the concave mirror 11 having a uniform radius of curvature with the image 8e of the following vehicle interposed therebetween. In this case, the rear concave mirror 10 having a uniform radius of curvature and the rear concave mirror 11 having a different radius of curvature are provided in the rear bumper 3b since the radius of curvature does not change much below each mirror surface.
The image 3d is shown with almost the same size. However, in the rear concave mirror 10 set by changing the radius of curvature, the image 8d of the following vehicle is the same as the image 8e of the following vehicle reflected on the concave mirror 11 having a uniform radius of curvature. There is, but it is big and clear. Further, a rear concave mirror 1 having a constant outer dimension and having a different radius of curvature is set.
0, a rear blind spot that is farther rearward is projected from the rear bumper 3a regardless of the size of the external dimensions is not much different from that of the ordinary concave mirror 11 having a uniform radius of curvature. The driver 5 has a convex mirror 4 having a uniform radius of curvature.
Thus, the image of the rear blind spot reflected on the rear concave mirror 10 set by changing the radius of curvature and reflected in this manner can be checked by looking back.

As shown in the third embodiment of FIG. 7, the apparatus may be constituted by a combination of a concave mirror 11 having a uniform radius of curvature and a convex mirror 4 having a uniform radius of curvature. Is enlarged and larger than when a flat mirror is used instead of the concave mirror 11 having a uniform radius of curvature. In the first embodiment, a convex mirror 1 having a changed radius of curvature and a rear flat mirror 2 are used. In the third embodiment, a convex mirror 4 having a uniform radius of curvature and a rear concave mirror 1 having a changed radius of curvature are used.
0, but instead of this, the illustration is omitted, but the rear plane mirror 2 is not used, and the convex mirror whose curvature radius is changed,
The device may be constituted by a combination of rear concave mirrors having different radii of curvature. In this case, the smaller the degree of increase of the radius of curvature of the convex mirror toward the part that reflects the far rear is smaller, the smaller the degree of reduction of the mirror surface of the rear concave mirror corresponding thereto is set smaller. The effect is similar to that of the first and third embodiments, and the driver 5 can confirm an object farther rearward.

In addition to the arrangement of the convex mirror 4 having a uniform radius of curvature and the rear concave mirror 10 having a different radius of curvature in the third embodiment shown in FIG. Is provided, the driver can directly check the front plane mirror 9 and check the rear blind spot in the normal driving posture.

In the foregoing, the apparatus configuration has been described in which the driver can enlarge and confirm an object located far behind the rear blind spot. Next, the confirmed object (subsequent vehicle) will be described.
The display of the scale for understanding the distance and size to the vehicle body 3 will be described. FIG. 9 shows a rear plane mirror 2 of this mirror surface in which the graduation 12 is displayed on a convex mirror 1 set by changing the radius of curvature.
It is the front view seen from the side. In the figure, the image 7a of the driving lane,
7a is shown, and the image 8a of the following vehicle and the image 3b of the rear bumper 3a are shown inside the left and right sides of the images 7a and 7a of the traveling lane. In this embodiment, the scale 12 is sequentially displayed from below the mirror surface in correspondence with the image of the rear blind spot (inside the traveling lane images 7a, 7a) reflected on the convex mirror 1 set by changing the radius of curvature. Minute scales 12a, 12b, 12
c,. Here, the partial scales 12a and 12b
, The interval between the partial scales 12b and 12c,.
Is written on the mirror surface of the convex mirror 1 so that, for example, the rear distance every 20 m from the rear surface of the vehicle body 3 is displayed as the actual distance. Also, the partial scales 12a, 12b, 12
The horizontal length in which c,... are written is an image 7 of the left and right traveling lanes reflected on the convex mirror 1 set by changing the radius of curvature.
The data is written so as to be included in the space between the left and right of a and 7a.
That is, the length in the horizontal direction is the width in the horizontal direction of the rear blind spot reflected on the convex mirror 1 set by changing the radius of curvature. The driver can confirm the object at the rear blind spot based on the scale 12 displayed in this manner. As shown in FIG. 9, for example, by confirming that the front surface of the image 8a of the following vehicle is located at the partial scale 12b, the state in which the following vehicle is traveling at a distance of 20 m from the rear surface of the vehicle body 3 can be obtained. You can see at a glance. At the same time, the vehicle width of the following vehicle is compared with the vehicle width of the vehicle body 3 by checking the ratio of the front surface length of the image 8a of the following vehicle to the length between the left and right of the partial scale 12b. It can be seen at a glance that the vehicle has a left-right width that is about one-half the width of the vehicle. Further, since the driver can check the rear blind spot on the basis of the scale 12, even when traveling on a road where the driving lane is not displayed, for example,
Objects located in the rear part other than the rear blind spot can be distinguished and confirmed. Further, the steering operation at the time of backing is surprisingly difficult as compared with the case of forward movement, but can be easily performed when the backing operation is performed using the scale 12 as a guide. In addition, scale 12
May be displayed on an ordinary convex mirror 4 having a uniform curvature, although not shown.

The scale 12 is not displayed on the convex mirror 1 having a different radius of curvature, but is displayed on the rear flat mirror 2 or on the rear concave mirror 10 having a different radius of curvature. 1, the scale 12 may be displayed. FIG. 10 shows an embodiment in which the scale 12 is displayed on the rear plane mirror 2. In the drawing, an image 1a of the convex mirror 1 set by changing the radius of curvature is shown by a broken line, and a partial scale 12a is indicated by a rear bumper 3 in this image.
The image is displayed at a position that partially overlaps the image 3d of FIG.

FIG. 11 shows an embodiment in which the scale 12 is displayed on the rear concave mirror 10 which is set by changing the radius of curvature. In the figure, an image 4a of the convex mirror 4 having a uniform radius of curvature is shown by a broken line, and the partial scale 12a is displayed at a position partially overlapping the image 3e of the rear bumper 3a in this image. When the portion immediately behind the rear of the vehicle body 3 is confirmed based on the partial scale 12a displayed in this way, the object located here is moved to the rear bumper 3
It can be confirmed by the positional relationship with a.

The scale 12 may be displayed with a fluorescent paint, for example, at nighttime when the amount of light is small.

FIG. 12 is a front view of the front flat mirror 9 attached to the upper end of the driver's seat side side mirror 6 as seen from the driver 5 side. This mirror surface has a rear concave mirror 10 set by changing the radius of curvature on which the scale 12 is displayed, and a rear bumper 3.
a, the driving lane and the following vehicle are shown. In the figure, 10a is an image of the rear concave mirror 10 set by changing the radius of curvature, 3f is an image of the rear bumper 3a, 7f and 7f are images of the traveling lane, and 8f is an image of the following vehicle. The driver 5 looks at the mirror surface of the front flat mirror 9 in the normal driving posture together with the image of the scale 12, and based on the scale 12, the distance to the vehicle body 3 of the following vehicle,
You can check the size.

In the device configuration in which the front flat mirror 9 is not attached, the driver 5 looks back at the rear flat mirror 2 on the scale 12 or the rear concave mirror 10 set by changing the radius of curvature and looks at the display 12. , The distance to the vehicle body 3 and the size of the following vehicle can be confirmed.

The vehicle in the drawings described above describes the case where the device of the present invention is mounted on a van type vehicle.
The device may be attached to a vehicle such as a tank truck or a sedan type passenger car. FIG. 13 shows an embodiment in which the second embodiment described with reference to FIG. 5 is applied to a sedan type passenger car. In this case, even if the room rearview mirror can be normally used, there is a rear blind spot 13 indicated by a cross-hatched portion in the figure. 13a appears. The driver 5 can see any of these rear blind spots 13 and 13 a by looking at the front plane mirror 9. Further, in the case of the first embodiment, in which the front plane mirror 9 is not attached, the back plane mirror 2 is turned around.
, Or in the case of the third embodiment, by looking at the rear concave mirror 10 set by changing the radius of curvature, any of these rear blind spots 13 and 13a can be confirmed.

[0028]

According to the first aspect of the present invention, the radius of curvature of the convex mirror 1 is set so as to gradually increase from a portion reflecting near the rear of the vehicle body 3 to a portion reflecting far away from the vehicle body 3. Therefore, the object (the following vehicle) located far away from the rear is enlarged and projected on the convex mirror 1 having a changed radius of curvature as compared with an image obtained when a normal convex mirror having a uniform radius of curvature is employed. The driver 5 turned around and looked at the rear plane mirror 2 at the rear vehicle located farther rearward than the convex mirror, and was able to clearly confirm.

According to the second aspect of the present invention, since the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3 is displayed on the convex mirror 1 or the rear plane mirror 2, the scale 1
The driver 5 turned and looked at the rear plane mirror 2 to see at a glance the distance and the size of the following vehicle located in the rear blind spot to the vehicle body 3 based on the vehicle 2.

According to the third aspect of the present invention, the rear concave mirror 10
The radius of curvature of the vehicle body 3
Is set so that it gradually becomes smaller as it becomes the part that reflects the far away from the rear, so that the following vehicle located far away from the rear of the vehicle body 3 has an image when a normal concave mirror with a uniform radius of curvature is adopted. Rear concave mirror 1 with a changed radius of curvature
The driver 5 turned around and looked at the rear concave mirror 10 to clearly see the rear car located behind and farther than a normal concave mirror because it was magnified and projected to 0.

According to the invention of claim 4, the rear concave mirror 10
Alternatively, the convex mirror 4 has a body 3 of a rear object reflected on the mirror surface.
Since the scale 12 indicating the distance to the vehicle is displayed, the driver 5 turns the rear concave mirror 10 based on the scale 12 to determine the distance and the size of the following vehicle located at the rear blind spot from the vehicle body 3.
At a glance, I was able to confirm at a glance.

According to the fifth aspect of the present invention, the radius of curvature of the convex mirror 1 is set so as to gradually increase from a portion reflecting near the rear of the vehicle body 3 to a portion reflecting far away from the vehicle body 3. Therefore, an object (follower vehicle) located far away from the rear of the vehicle body 3 has a convex mirror 1 having a different radius of curvature as compared with an image obtained when a normal convex mirror having a uniform radius of curvature is employed.
The driver 5 was able to clearly see the following vehicle, which is located farther rearward than the normal convex mirror, while looking at the front plane mirror 9 in the normal driving posture.

According to the sixth aspect of the present invention, the convex mirror 1 or the rear flat mirror 2 displays the scale 12 indicating the distance of the rear object reflected on the mirror surface to the vehicle body 3, so that the scale 1
The driver 5 determines the distance and size of the following vehicle located in the rear blind spot to the vehicle body 3 based on the normal driving posture.
Looking at the front plane mirror 9, it was confirmed at a glance.

According to the invention of claim 7, the rear concave mirror 10
The radius of curvature of the vehicle body 3
Is set so that it gradually becomes smaller as it becomes the part that reflects the far away from the rear, so that the following vehicle located far away from the rear of the vehicle body 3 has an image when a normal concave mirror with a uniform radius of curvature is adopted. Rear concave mirror 1 with a changed radius of curvature
The driver 5 can clearly see the following vehicle located farther rearward than the normal concave mirror by looking at the front plane mirror 9 in the normal driving posture, since it is enlarged to 0 and greatly reflected.

According to the invention of claim 8, the rear concave mirror 10
Alternatively, the convex mirror 4 has a body 3 of a rear object reflected on the mirror surface.
Since the scale 12 indicating the distance to the vehicle is displayed, the driver can determine the distance and the size to the vehicle body 3 of the succeeding vehicle located in the rear blind spot based on the scale 12 by using the normal driving posture. Looking at the external flat mirror 9, it could be confirmed at a glance.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a convex mirror and a rear flat mirror according to the present invention are attached to a vehicle body.

FIG. 2 is a rear view of the vehicle body to which the convex mirror and the rear flat mirror in the first embodiment of FIG. 1 are attached.

FIG. 3 is a longitudinal sectional view of the convex mirror of FIG. 1;

FIG. 4 is a rear view of the vehicle body to which the convex mirror and the rear flat mirror in the first embodiment of FIG. 1 are attached.

FIG. 5 is a right side view of a vehicle body with a convex mirror, a rear plane mirror, and a front plane mirror according to a second embodiment of the present invention.

FIG. 6 is a perspective view of the second embodiment of FIG. 5 in which a front flat mirror is attached to a side mirror;

FIG. 7 is a perspective view of a third embodiment of the present invention in which a rear concave mirror is attached to a vehicle body.

FIG. 8 is a longitudinal sectional view of a rear concave mirror in the third embodiment of FIG. 7;

FIG. 9 is a perspective view showing scales on the convex mirror in the first embodiment of FIG. 1;

FIG. 10 is a perspective view showing scales on a rear flat mirror in the first embodiment of FIG. 1;

FIG. 11 is a perspective view showing scales on a rear concave mirror in the third embodiment of FIG. 7;

12 is a perspective view in which a front flat mirror 9 is added to the third embodiment of FIG. 7 and attached to a side mirror 6. FIG.

FIG. 13 is a right side view of a sedan type passenger car to which the second embodiment is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Convex mirror 2 Rear plane mirror 3 Car body 4 Convex mirror 5 Driver 9 Front plane mirror 10 Rear concave mirror 12 Scale

Claims (8)

[Claims] 1. A vehicle having a rear blind spot that cannot be recognized by a side mirror or a room rearview mirror.
A convex mirror (1) attached to the rear of the vehicle body (3) in the vicinity of the rear part thereof near the rear of the vehicle body (3), and mounted near the rear part of the vehicle body (3) relative to the mirror surface of the convex mirror (1). Rear mirror (2), and the rear flat mirror (2) is mounted at a position where the driver (5) can look back and look straight, and the driver (5) looks at the mirror surface of the rear flat mirror (2). In a rear view confirmation device for a vehicle, in which a convex mirror (1) and a rear plane mirror (2) are attached so that a rear object can be confirmed, a radius of curvature of the convex mirror (1) is set to a value close to the rear of the vehicle body (3). A rear view confirmation device for a vehicle, wherein the size of the rear view confirmation device is set so as to be gradually increased from a portion to be imaged to a portion to image a distant area behind the vehicle body (3). 2. A scale (12) indicating the distance to the vehicle body (3) of a rear object reflected on the mirror surface is displayed on one of the convex mirror (1) and the rear plane mirror (2). The vehicle rear view confirmation device according to claim 1. 3. A vehicle having a rear blind spot that cannot be recognized by a side mirror or a room rearview mirror,
A convex mirror (4) with a uniform radius of curvature mounted rearward near the rear of the vehicle body (3) near the rear of the vehicle body (3), and the vehicle body (3) facing the mirror surface of the convex mirror (4). Consists of a rear concave mirror (10) attached near the rear,
In addition, the rear concave mirror (10) is mounted at a position where the driver (5) can look back and look directly at the rear, so that the driver (5) can see the rear surface of the rear concave mirror (10) and check an object behind. (4) A rear view confirmation device for a vehicle, to which the rear concave mirror (10) is attached, wherein the radius of curvature of the rear concave mirror (10) is set so that the radius of curvature of the rear concave mirror (10) can be changed from a portion of the vehicle body (3) near the rear. A rear-view confirmation device for a vehicle, characterized in that the rear-view confirmation device is set so as to be gradually reduced as a portion which reflects a distant place. 4. A vehicle body (3) of a rear object reflected on one of the rear concave mirror (10) and the convex mirror (4).
4. A rear view confirmation device for a vehicle according to claim 3, wherein a scale (12) indicating a distance to the vehicle is displayed. 5. A vehicle having a rear blind spot that cannot be recognized by a side mirror or a room rearview mirror,
A convex mirror (1) attached to the rear of the vehicle body (3) in the vicinity of the rear part thereof near the rear of the vehicle body (3), and mounted near the rear part of the vehicle body (3) relative to the mirror surface of the convex mirror (1). A rear flat mirror (2) and a front flat mirror (9) mounted near the front of the vehicle body (3) with the mirror faced toward the driver (5) while facing the rear flat mirror (2). 5) A rear view of a vehicle equipped with a convex mirror (1), a rear flat mirror (2) and a front flat mirror (9) so that an object behind can be checked by directly looking at the front flat mirror (9). The apparatus is characterized in that the radius of curvature of the convex mirror (1) is set to be gradually increased from a portion that reflects the area near the rear of the vehicle body (3) to a part that reflects the distance from the rear of the vehicle body (3). Confirmation device for the rear of the vehicle. 6. A scale (12) indicating the distance to the vehicle body (3) of a rear object reflected on the mirror surface is displayed on one of the convex mirror (1) and the rear plane mirror (2). The vehicle rearward confirmation device according to claim 5. 7. A vehicle having a rear blind spot that cannot be recognized by a side mirror or a room rearview mirror.
A convex mirror (4) with a uniform radius of curvature mounted rearward near the rear of the vehicle body (3) near the rear of the vehicle body (3), and the vehicle body (3) facing the mirror surface of the convex mirror (4). A rear concave mirror (10) mounted near the rear of the vehicle and a front flat mirror (9) mounted near the front of the vehicle body (3) with the mirror surface facing the driver (5) while facing the rear concave mirror (10). The convex mirror (4), the rear concave mirror (10), and the front flat mirror (9) are attached so that the driver (5) can confirm the object behind by directly looking at the front flat mirror (9). In the rear-viewing device for a vehicle, the radius of curvature of the rear concave mirror (10) is gradually reduced from a portion reflecting near the rear of the vehicle body (3) to a portion reflecting far away from the vehicle body (3). A rear confirmation device for a vehicle, wherein the confirmation device is set. 8. A body (3) of a rear object reflected on one of the rear concave mirror (10) and the convex mirror (4).
8. A rear view confirmation device for a vehicle according to claim 7, wherein a scale (12) indicating a distance to the vehicle is displayed.