JP2015112955A - Door mirror device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door mirror device for a vehicle which secures good visibility at the vehicle rear side while improving the visibility at a vehicle exterior side end part of the door mirror device for the vehicle.SOLUTION: A door mirror device 1 includes: a mirror 40 which reflects a sight of the vehicle rear side; a visor 30 which covers a vehicle exterior side end part of the mirror 40 and has brightness lower than the mirror 40; and a reflection tape 50 which is provided at the vehicle exterior side of the visor 30 and has brightness higher than the visor 30.

Description

  The present invention relates to a vehicle door mirror device.

  When passing in a narrow alley or making a right or left turn, the driver checks the width of the vehicle by visually checking the outer edge of the vehicle door mirror device, and checks the oncoming vehicle and obstacles (for example, power poles, walls, etc.) ).

  Patent Document 1 discloses an invention in which a light emitting element is provided in order to make it easier to visually recognize an end portion on the outside of a vehicle door mirror device. The invention of Patent Document 1 includes a mirror and an outer frame attached along the periphery of the mirror, and applies a fluorescent paint to the outer end of the outer frame or a part of the outer end of the outer frame. A light emitter is fitted into a notch formed by cutting out the.

Japanese Utility Model Publication No.59-99839

  However, in the invention of Patent Document 1, since the mirror and the light emitting element are arranged adjacent to each other, when the driver visually recognizes the rear of the vehicle with the mirror, the light of the light emitting element is likely to enter the eyes, There is a risk of hindering visibility behind the vehicle.

  The present invention was devised from such a viewpoint, and provides a vehicle door mirror device that can ensure good visibility at the rear of the vehicle while improving the visibility of the vehicle outer end portion of the vehicle door mirror device. This is the issue.

  In order to solve the above-described problems, the present invention provides a vehicle door mirror device that is attached to an outer surface of a vehicle, covers a mirror that reflects a rear view of the vehicle, and covers an outer end portion of the mirror, A low-luminance member having low luminance, and a position confirmation member provided outside the low-luminance member and having higher luminance than the low-luminance member.

According to the present invention, the position confirmation member is disposed on the vehicle exterior side of the mirror via the mirror and the low-luminance member having a lower luminance than the position confirmation member. Thereby, the boundary between the mirror and the position confirmation member is clarified, and the mirror and the position confirmation member are arranged apart from each other in the vehicle width direction with the low-luminance member interposed therebetween. Therefore, when the driver visually recognizes the rear of the vehicle with the mirror, the light of the position confirmation member is less likely to enter the eyes, and the visibility behind the vehicle can be ensured satisfactorily.
In addition, according to the present invention, since the relatively high-luminance position confirmation member is disposed on the vehicle exterior side of the mirror, the visibility of the vehicle exterior end portion of the vehicle door mirror device can be improved.
Therefore, according to the present invention, it is possible to satisfactorily ensure the visibility behind the vehicle while improving the visibility of the vehicle outer side end portion of the vehicle door mirror device.

  The position confirmation member is preferably a reflecting member.

  According to such a configuration, since the position confirmation member is a reflection member that reflects light like the mirror, it becomes easier to visually recognize (recognize) the position confirmation member as a periodic contrast change.

When a light emitter is used as in Patent Document 1, it is necessary to always emit light from the light emitter, so that the light emitter is conspicuous when viewed from the outside of the vehicle, and the appearance may be deteriorated.
On the other hand, in the present invention, since the position confirmation member is a reflecting member, the position confirmation member is less noticeable when viewed from the outside of the vehicle than the light emitter, and the appearance is good.

  Moreover, it is preferable that the position confirmation member is configured to have a reflectance that is equal to or substantially equal to that of the mirror.

  According to such a configuration, since the position confirmation member is set to have the same or substantially the same reflectance as that of the mirror, it becomes easier to visually recognize the position confirmation member as a periodic contrast change.

The width of the position confirmation member along the vehicle width direction is set so that the spatial frequency F of the position confirmation member obtained by the following equation (1) is 2 to 6 cycles / deg. Is preferred.
F = 1 / {atan (L / T) −atan [(L−X) / T]} × 2 Formula (1)
F: Spatial frequency X of the position confirmation member X: Width along the vehicle width direction of the position confirmation member L: Separation distance T in the vehicle width direction from the driver's eye point to the vehicle outer end of the position confirmation member T: Distance in the vehicle longitudinal direction from the eye point to the position confirmation member

  The position confirmation member is a particularly important component for confirming the vehicle width and grasping the distance from the oncoming vehicle, etc., and it is easy for a person to visually recognize the width of the position confirmation member along the vehicle width direction. The visibility of a position confirmation member can be improved by setting so that it may become spatial frequency F = 2-6cycle / deg.

As a general theory, a means for improving the visibility of the position confirmation member by adjusting the position of the door mirror device (position of the position confirmation member) can be considered. However, with such means, if the visibility of the position confirmation member is to be increased, the position of the door mirror device is restricted, and the design of the vehicle body is impaired.
On the other hand, in the present invention, the visibility of the position confirmation member is set by setting the width of the position confirmation member in the vehicle width direction so as to be a spatial frequency F = 2 to 6 cycles / deg that is easy for humans to visually recognize. Therefore, the position of the door mirror device can be freely selected. That is, the visibility of the position confirmation member can be improved while minimizing the influence on the design of the vehicle body.

  Further, the vehicle door mirror device is attached to the outer side surfaces of the vehicle on the driver seat side and the passenger seat side, respectively, and the width along the vehicle width direction of the position confirmation member on the driver seat side and the passenger seat side. Are preferably set equal to each other, and the spatial frequency F of the position confirmation member on the passenger seat side is preferably set to 2 to 6 cycles / deg.

  According to such a configuration, the widths along the vehicle width direction of the position confirmation members on the driver seat side and the passenger seat side are set to be equal, so that it is possible to suppress a sense of discomfort on the left and right when viewed from the outside of the vehicle.

Since the position confirmation member on the passenger seat side is farther from the driver than the position confirmation member on the driver seat side, there is a problem that it is difficult to visually recognize. Therefore, in the present invention, the visibility of the position confirmation member on the passenger seat side can be enhanced by setting the spatial frequency F of the position confirmation member on the passenger seat side to 2 to 6 cycles / deg. Thereby, since the visual recognition time until visual recognition of the vehicle outer side edge part of the vehicle door mirror device on the passenger seat side can be shortened, it becomes easy to check the vehicle width and to grasp the sense of distance from the oncoming vehicle or the like.
If the spatial frequency F of the position confirmation member on the passenger seat side is set to 2 to 6 cycles / deg, the spatial frequency F of the position confirmation member on the driver seat side may be outside the range of 2 to 6 cycles / deg. Even in such a case, the position confirmation member on the driver's seat side is closer to the driver than the position confirmation member on the passenger seat side, so that there is no hindrance in confirming the vehicle width and grasping the sense of distance from the oncoming vehicle etc. Sex can be secured.

  The width of the position confirmation member along the vehicle width direction is preferably shorter than the width of the low brightness member along the vehicle width direction.

  According to such a configuration, the width of the position confirmation member along the vehicle width direction is shorter than the width of the low-luminance member along the vehicle width direction. The member becomes less conspicuous than the low-luminance member, and visibility behind the vehicle can be improved.

  According to the present invention, it is possible to provide a vehicle door mirror device that can ensure good visibility of the rear side of the vehicle while improving the visibility of the vehicle outer end portion of the vehicle door mirror device.

1 is a partial side view of a vehicle to which a door mirror device according to an embodiment of the present invention is applied. It is the front view which looked at the door mirror device shown in Drawing 1 from back. FIG. 3 is an end view taken along line III-III in FIG. 2. It is explanatory drawing for demonstrating the calculation method of the spatial frequency of a reflective tape.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. Note that “front and rear” indicated by arrows in each figure indicates the vehicle longitudinal direction, “up and down” indicates the vehicle vertical direction, and “left and right” indicates the left and right direction (vehicle width direction) as viewed from the driver's seat. Show.

  As shown in FIG. 1, a door mirror device 1 according to an embodiment of the present invention is applied to a door mirror that allows a driver to visually recognize the rear (rear side) of a vehicle.

  The door mirror device 1 is attached to the outer surface 61 of the front door 60 on the driver's seat side and the passenger seat side of the vehicle body. In the present embodiment, one door mirror device 1 attached to the outer side surface 61 of the right front door 60 will be described in detail below, and the description of the other door mirror device 1 attached to the outer side surface 61 of the left front door 60 will be omitted.

  As shown in FIGS. 1 and 2, the door mirror device 1 includes a mirror base 10 attached to an outer surface 61 of a right front door 60 on the driver's seat side of a vehicle body, a mirror housing 20 attached to the mirror base 10, and a mirror housing. The visor 30 attached to the rear part of the visor 20, the mirror 40 provided inside the visor 30 to reflect the scene behind the vehicle, and the reflective tape 50 provided outside the visor 30.

  As shown in FIG. 1, the mirror housing 20 is a member constituting the outer surface of the door mirror device 1. The mirror housing 20 includes a base member 21 and a cover member 22 attached to the upper portion of the base member 21. The base member 21 and the cover member 22 are made of, for example, a resin material.

  As shown in FIG. 2, the visor 30 is a member that covers the periphery of the mirror 40 from the top, bottom, left, and right and accommodates and holds the mirror 40. The visor 30 is made of, for example, a resin material. The visor 30 has a lower brightness than the mirror 40 and the reflective tape 50. The visor 30 has a substantially rectangular opening 31 that opens rearward. At the opening edge of the visor 30, a peripheral wall portion 32 protrudes toward the front of the vehicle. The peripheral wall portion 32 has a substantially square ring shape when viewed from the front. As shown in FIG. 3, an accommodation space 33 for accommodating the mirror 40 is formed inside the peripheral wall portion 32. The vehicle exterior part 30A of the visor 30 is a part located on the vehicle exterior side of the mirror 40, and constitutes a “low brightness member” in the claims.

  As shown in FIG. 2, the mirror 40 is a reflecting member that has a substantially rectangular shape when viewed from the front. As shown in FIG. 3, the mirror 40 is housed in the housing space 33 and is located in front of the vehicle from the opening 31. The vehicle outer end portion 40A of the mirror 40 is covered with a vehicle outer side portion 30A of the visor 30 from the vehicle outer side.

  As shown in FIG. 2, the reflective tape 50 is a reflective member having a strip shape that is long in the vertical direction. The reflective tape 50 is set to have a reflectance and luminance equivalent or substantially equivalent to those of the mirror 40. The reflective tape 50 has a higher brightness than the visor 30. The reflective tape 50 is provided on the outer side of the vehicle exterior portion 30 </ b> A of the visor 30. The reflective tape 50 is disposed outside the mirror 40 via the visor 30. That is, the reflective tape 50 is disposed away from the vehicle outer end 40A of the mirror 40 to the vehicle outer side with a part of the vehicle outer portion 30A of the visor 30 interposed therebetween. The reflection tape 50 enhances the visibility of the vehicle outer end portion of the door mirror device 1 by reflecting light. The reflective tape 50 constitutes a “position confirmation member” in the claims.

  The width X along the vehicle width direction of the reflective tape 50 is shorter than the width Y along the vehicle width direction of the vehicle exterior portion 30 </ b> A of the visor 30. The width X along the vehicle width direction of the reflective tape 50 is preferably set so that the spatial frequency F of the reflective tape 50 obtained by the following formula (1) is 2 to 6 cycles / deg.

F = 1 / {atan (L / T) −atan [(L−X) / T]} × 2 (1)
F: Spatial frequency X of the reflective tape 50: Width along the vehicle width direction of the reflective tape 50: Distance T in the vehicle width direction from the eye point E of the driver D to the outer end of the reflective tape 50: Driving Distance in the vehicle longitudinal direction from the eye point E of the person D to the reflective tape 50

  Here, with reference to FIG. 4, the calculation method of the spatial frequency F of the reflective tape 50 on the right side (driver's seat side) will be described in detail.

The angle θ1 from the eye point E (for example, the right eye) E of the driver D to the vehicle outer end of the reflective tape 50 is L1, which is the distance in the vehicle width direction from the eye point E to the vehicle outer end of the reflective tape 50, If the distance in the vehicle longitudinal direction from the eye point E to the reflective tape 50 is T,
θ1 = atan (L1 / T) (2)
Is required.
The angle θ1 is an angle formed by a line M passing through the eye point E along the vehicle front-rear direction and a line N1 connecting the eye point E and the vehicle outer end of the reflective tape 50.

On the other hand, the angle θ2 from the eye point E to the inner side edge of the reflective tape 50 is defined as L2 in the vehicle width direction from the eye point E to the inner side edge of the reflective tape 50, and from the eye point E to the reflective tape. If the separation distance in the vehicle longitudinal direction up to 50 is T,
θ2 = atan (L2 / T) (3)
Is required.
The angle θ <b> 2 is an angle formed by a line M passing along the vehicle front-rear direction passing through the eye point E and a line N <b> 2 connecting the eye point E and the inner end of the reflective tape 50.

The distance L2 in the vehicle width direction is a value obtained by subtracting the width X1 along the vehicle width direction of the reflective tape 50 from the distance L1 in the vehicle width direction, that is,
L2 = L1-X1 Formula (4)
It becomes.

Therefore, the angle θ2 is obtained from the equations (3) and (4).
θ2 = atan [(L1-X1) / T] (5)
Is required.

Here, the spatial frequency F of the reflective tape 50 is obtained by the following equation (6).
F = 1 / [(θ1-θ2) × 2] (6)

Therefore, the spatial frequency F of the reflective tape 50 is obtained from the equations (2), (5), (6),
F = 1 / {atan (L1 / T) −atan [(L1−X1) / T]} × 2 (7)
Is required.

  In the present embodiment, it is preferable to set the width X1 of the reflective tape 50 along the vehicle width direction so that the spatial frequency F of the reflective tape 50 obtained by the above formula (7) is 2 to 6 cycles / deg. The range of 2 to 6 cycles / deg of the spatial frequency F is based on the technical knowledge shown in the “spatial frequency characteristics of the visual system” recorded in the knowledge base of the Institute of Electronics, Information and Communication Engineers. It is known that this numerical range is the range where the contrast sensitivity is maximized and is most easily visible to humans. This embodiment has technical significance in that this technical knowledge is applied to the reflective tape 50 of the door mirror device 1.

Note that the spatial frequency F of the reflective tape 50 on the left side (passenger seat side) can also be calculated using substantially the same formula as the formulas (2) to (7). That is, the spatial frequency F of the left reflective tape 50 is obtained by the following equation (8) (see FIG. 4 for L3, X2, etc.).
F = 1 / {atan (L3 / T) -atan [(L3-X2) / T]} × 2 Formula (8)

  It is preferable to set the width X2 along the vehicle width direction of the reflective tape 50 so that the spatial frequency F of the reflective tape 50 determined by the above formula (8) is 2 to 6 cycles / deg.

  Incidentally, when the widths X1, X2 along the vehicle width direction of the left and right reflecting tapes 50 are the same, the left reflecting tape 50 has a higher spatial frequency F than the right reflecting tape 50. Therefore, by making the width X1 along the vehicle width direction of the right reflective tape 50 shorter than the width X2 along the vehicle width direction of the left reflective tape 50, the spatial frequencies F of the left and right reflective tapes 50 are equal. Or substantially the same, and the left and right spatial frequencies F can be balanced.

  The door mirror device 1 according to the present embodiment is basically configured as described above. Next, the function and effect will be described.

According to the present embodiment, the reflective tape 50 is disposed outside the mirror 40 via the mirror 40 and the visor 30 having a lower luminance than the reflective tape 50. As a result, the boundary between the mirror 40 and the reflective tape 50 becomes clear, and the mirror 40 and the reflective tape 50 are separated from each other in the vehicle width direction with a part of the vehicle exterior portion 30A interposed therebetween. Arranged. For this reason, when the driver D visually recognizes the rear of the vehicle with the mirror 40, the light of the reflective tape 50 does not easily enter the eyes, and the visibility behind the vehicle can be ensured satisfactorily.
Moreover, according to this embodiment, since the comparatively high-intensity reflective tape 50 is arrange | positioned at the vehicle outer side of the mirror 40, the visibility of the vehicle outer side edge part of the door mirror apparatus 1 can be improved.
Therefore, according to this embodiment, the visibility of the vehicle rear side can be ensured satisfactorily while improving the visibility of the vehicle outer end portion of the door mirror device 1.

  According to the present embodiment, since the reflective tape 50 is a reflective member that reflects light like the mirror 40, the reflective tape 50 is easily visually recognized as a periodic contrast change.

  According to the present embodiment, since the reflective tape 50 is set to have the same or substantially the same reflectance as that of the mirror 40, the reflective tape 50 can be more easily visually recognized as a periodic contrast change.

  According to the present embodiment, the visibility X of the reflective tape 50 is set by setting the width X along the vehicle width direction of the reflective tape 50 so as to be a spatial frequency F = 2 to 6 cycles / deg that is easy for humans to visually recognize. Can be increased.

As a general theory, a means for improving the visibility of the reflective tape 50 by adjusting the position of the door mirror device 1 (the position of the reflective tape 50) can be considered. However, in such a means, if the visibility of the reflective tape 50 is to be improved, the position of the door mirror device 1 is restricted, and the design of the vehicle body is impaired.
On the other hand, in this embodiment, the width X along the vehicle width direction of the reflective tape 50 is set so that the spatial frequency F is easily visible to humans by 2 to 6 cycles / deg. Since the visibility is enhanced, the position of the door mirror device 1 can be freely selected. That is, the visibility of the reflective tape 50 can be enhanced while minimizing the influence on the design of the vehicle body.

  According to the present embodiment, the width X along the vehicle width direction of the reflective tape 50 is shorter than the width Y along the vehicle width direction of the vehicle exterior portion 30A of the visor 30, so When the rear is visually recognized, the reflective tape 50 becomes less conspicuous than the visor 30 and the visibility behind the vehicle can be enhanced.

When a light emitter is used as in Patent Document 1, it is necessary to always emit light from the light emitter, so that the light emitter is conspicuous when viewed from the outside of the vehicle, and the appearance may be deteriorated.
On the other hand, in this embodiment, since the reflective tape 50 is used, the reflective tape 50 is less noticeable when viewed from the outside of the vehicle than the light emitter, and the appearance is good.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably.

  In the present embodiment, the reflective tape 50 is used as the position confirmation member of the present invention, but the present invention is not limited to this, for example, a member formed of a white resin material may be used, A member formed of the same material as the mirror 40 may be used. Moreover, you may use the reflective surface formed by performing the mirror surface process and the plating process on the surface of the visor 30 as a position confirmation member of this invention.

  Further, in the present invention, the widths X1 and X2 along the vehicle width direction of the reflective tape 50 on the driver seat side and the passenger seat side are set equal, and the spatial frequency F of the reflective tape 50 on the passenger seat side is 2 to 6 cycles. It is good also as a structure set to / deg.

  According to such a configuration, the widths X1 and X2 along the vehicle width direction of the reflective tape 50 on the driver's seat side and the passenger's seat side are set to be equal, so that it is possible to suppress left and right discomfort when viewed from the outside of the vehicle.

The reflective tape 50 on the passenger seat side is farther from the driver D than the reflective tape 50 on the driver seat side, and thus there is a problem that it is difficult to see. Therefore, the visibility of the reflective tape 50 on the passenger seat side can be improved by setting the spatial frequency F of the reflective tape 50 on the passenger seat side to 2 to 6 cycles / deg. Thereby, since the visual recognition time until visually recognizing the vehicle outer side edge part of the door mirror device 1 on the passenger seat side can be shortened, it becomes easy to check the vehicle width and to grasp the sense of distance from the oncoming vehicle or the like.
In addition, if the spatial frequency F of the reflective tape 50 on the passenger seat side is set to 2 to 6 cycles / deg, the spatial frequency F of the reflective tape 50 on the driver seat side may be outside the range of 2 to 6 cycles / deg. Even in such a case, since the reflective tape 50 on the driver's seat is closer to the driver D than the reflective tape 50 on the passenger's seat, there is no problem in confirming the vehicle width or grasping the sense of distance from the oncoming vehicle. Visibility can be ensured.

V Vehicle 1 Door mirror device (Vehicle door mirror device)
10 Mirror base 20 Mirror housing 30 Visor 30A Vehicle exterior part (low brightness member)
40 mirror 40A vehicle outer side end 50 reflective tape (position confirmation member)
61 External side D Driver E Eye point F Spatial frequency X (X1, X2) Width along the vehicle width direction of the reflective tape Y Width along the vehicle width direction of the vehicle outside portion of the visor

Claims (6)

A vehicle door mirror device attached to an outer surface of a vehicle,
A mirror that reflects the scene behind the vehicle,
A low-luminance member that covers the vehicle outer end of the mirror and has a lower luminance than the mirror;
A vehicle door mirror device comprising: a position confirmation member that is provided outside the low-luminance member and has a higher luminance than the low-luminance member.   The vehicle door mirror device according to claim 1, wherein the position confirmation member is a reflection member.   The vehicle door mirror device according to claim 2, wherein the position confirmation member is set to have a reflectance equivalent to or substantially equivalent to that of the mirror. The width along the vehicle width direction of the position confirmation member is set such that the spatial frequency F of the position confirmation member obtained by the following formula (1) is 2 to 6 cycles / deg. The vehicle door mirror device according to any one of claims 1 to 3.
F = 1 / {atan (L / T) −atan [(L−X) / T]} × 2 Formula (1)
F: Spatial frequency X of the position confirmation member X: Width along the vehicle width direction of the position confirmation member L: Separation distance T in the vehicle width direction from the driver's eye point to the vehicle outer end of the position confirmation member T: Distance in the vehicle longitudinal direction from the eye point to the position confirmation member The vehicle door mirror device is attached to each of the outer side surfaces of the driver side and the passenger side of the vehicle,
The width along the vehicle width direction of the position confirmation member on the driver seat side and the passenger seat side is set equal,
5. The vehicle door mirror device according to claim 4, wherein the spatial frequency F of the position confirmation member on the passenger seat side is set to 2 to 6 cycles / deg.   The vehicle according to any one of claims 1 to 4, wherein a width along the vehicle width direction of the position confirmation member is shorter than a width along the vehicle width direction of the low-luminance member. Door mirror device.

Images