WO2018021004A1 - Blind spot assistant device - Google Patents

Blind spot assistant device Download PDF

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Publication number
WO2018021004A1
WO2018021004A1 PCT/JP2017/025192 JP2017025192W WO2018021004A1 WO 2018021004 A1 WO2018021004 A1 WO 2018021004A1 JP 2017025192 W JP2017025192 W JP 2017025192W WO 2018021004 A1 WO2018021004 A1 WO 2018021004A1
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WO
WIPO (PCT)
Prior art keywords
mirror
blind spot
portions
support portions
semi
Prior art date
Application number
PCT/JP2017/025192
Other languages
French (fr)
Japanese (ja)
Inventor
加苗 春山
小幡　雅人
高橋　祐一
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Priority to JP2018529486A priority Critical patent/JP6928881B2/en
Publication of WO2018021004A1 publication Critical patent/WO2018021004A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/10—Front-view mirror arrangements; Periscope arrangements, i.e. optical devices using combinations of mirrors, lenses, prisms or the like ; Other mirror arrangements giving a view from above or under the vehicle

Definitions

  • One of the transflective mirror and the mirror is referred to as one mirror.
  • the other of the semi-transmissive mirror and the mirror is referred to as the other mirror.
  • a plurality of first mirror support portions capable of supporting the first opposing surface of the first case half facing the plate surface of the one mirror partially in contact with the first mirror.
  • a plurality of first fitting holes located in the vicinity of the plurality of first mirror support portions.
  • a plurality of second mirror support portions in the second case half that can be supported by a second facing surface that faces the plate surface of the other mirror in partial contact with the other mirror.
  • a plurality of second fitting holes located in the vicinity of the plurality of second mirror support portions.
  • a plurality of spacers are interposed between the one mirror and the other mirror.
  • the plurality of spacers extend along the edge of the one mirror toward the first opposing surface, and a plurality of first fitting portions that can be fitted into the plurality of first fitting holes, and the other
  • a plurality of second fitting portions extending along the edge of the mirror toward the second facing surface and capable of fitting into the plurality of second fitting holes, and partially on the plate surface of the one mirror
  • a plurality of second contact portions capable of partially contacting the plate surface of the other mirror.
  • a distance and an angle between the one mirror and the other mirror are defined by the plurality of first and second contact portions of the plurality of spacers.
  • the positions of the plurality of first contact portions are viewed from a direction perpendicular to the surface of the one mirror (a direction toward the plate surface of the one mirror; a direction perpendicular to the plate surface).
  • the positions of the plurality of first mirror support portions coincide with each other.
  • the positions of the plurality of second contact portions coincide with the positions of the plurality of second mirror support portions when viewed from the direction perpendicular to the surface of the one mirror.
  • the positions of the plurality of first contact portions and the positions of the plurality of second contact portions coincide with each other when viewed from the direction perpendicular to the surface of the one mirror.
  • each of the plurality of first and second mirror support portions and the plurality of first and second contact portions is three.
  • the shapes of the plurality of first and second mirror support portions are protruding spherical shapes.
  • At least one of the plurality of first mirror support portions and the plurality of second mirror support portions is constituted by an elastic member.
  • the mirror support portion that supports the semi-transmissive mirror is formed by the elastic member. Without being configured, only the mirror support portion that supports the mirror is configured by the elastic member.
  • the elastic member is made of rubber.
  • the plurality of spacers interposed between the pair of mirrors facing each other have a plurality of first contact portions and a plurality of second contact portions.
  • the plurality of first and second contact portions can partially contact the plate surface of each mirror. That is, the plate surfaces of the pair of mirrors are not in contact with the entire plurality of spacers. It is easier to manage the dimensional tolerances of the tips of the multiple first and second contact portions of the multiple spacers than when managing the dimensional tolerances of the first and second case halves. It is. For this reason, the mutual space
  • the distance between the pair of mirrors and the predetermined angle can be accurately ensured.
  • an image in the blind spot region can be projected on the pair of mirrors without distortion. It is possible to improve the so-called visibility that the viewer can clearly see the image in the blind spot area.
  • the second facing surface facing the plate surface of the other mirror in the second case half has a plurality of second mirror support portions.
  • the plurality of second mirror support portions can partially contact the other mirror. That is, the plate surface of the other mirror is not in contact with the entire second facing surface.
  • the other mirror can be supported by the plurality of second contact portions and the plurality of second mirror support portions.
  • the pair of mirrors can be arranged at an accurate position in the case, and supported by increasing the flatness of the pair of mirrors, that is, increasing the flatness (uniformity) of one surface. Can do.
  • the plurality of first fitting portions are along the edge of one mirror.
  • the plurality of second fitting portions are along the edge of the other mirror. For this reason, the positioning of the pair of mirrors with respect to the case in the direction along the plate surfaces of the pair of mirrors can be easily performed by the plurality of first and second fitting portions.
  • each mirror is supported by each mirror support part and each contact part which are in the position which mutually matched (it overlaps) seeing from the surface normal direction of one mirror.
  • the plurality of first and second contact portions and the plurality of first and second mirror support portions are three each.
  • each contact portion and each mirror support portion When there are “two” each contact portion and each mirror support portion, it is not easy to ensure the flatness of the pair of mirrors. Further, when there are “four” each contact portion and each mirror support portion, there are four support points for supporting each mirror. It is not easy to manage each dimensional tolerance so that the flatness of the pair of mirrors is ensured and the pair of mirrors are uniformly supported by the four support points. On the other hand, in the invention according to claim 3, there are “three” each of the contact portions and the mirror support portions. With the three support points, the pair of mirrors can be supported relatively easily, uniformly and stably.
  • the shapes of the plurality of first and second contact portions are protruding spherical shapes. For this reason, the first and second contact portions can be brought into point contact with the plate surfaces of the pair of mirrors.
  • the tips of the plurality of first and second contact portions provided in the spacer are easily set to dimensions as designed.
  • the shapes of the plurality of first and second mirror support portions are protruding spherical shapes. For this reason, the first and second mirror support portions can be brought into point contact with the plate surfaces of the pair of mirrors.
  • the front ends of the plurality of first and second mirror support portions included in the first and second case halves can be easily sized as designed.
  • At least one of the plurality of first mirror support portions and the plurality of second mirror support portions is constituted by an elastic member.
  • the elastic member has sufficient elasticity to prevent backlash between the members due to dimensional errors during assembly. For this reason, rattling can be easily prevented by the elastic member.
  • the mirror support portion that supports the semi-transmissive mirror is not constituted by an elastic member. Only the mirror support portion that supports the mirror is formed of an elastic member. That is, the elastic member is located only on the back surface of the mirror (the surface opposite to the reflecting surface). For this reason, the elastic member cannot be seen from the viewer side. The appearance of the blind spot assisting device can be improved.
  • the elastic member is made of rubber. For this reason, a structure can be simplified compared with the case where an elastic member is comprised by other members, such as a spring.
  • FIG. 4 is a detailed view of the upper part of the blind spot assisting device shown in FIG. 3. It is sectional drawing of the upper part of the blind spot auxiliary
  • the blind spot assisting device is not limited to the configuration adopted for the front pillar of the vehicle.
  • a vehicle 10 such as an automobile includes left and right front pillars 11 and 11 at a front portion of a vehicle body, a windshield glass 12 provided between the left and right front pillars 11 and 11, and left and right front pillars 11 and 11. It has left and right side glasses 13 and 13 provided at the rear ends of the front pillars 11 and 11.
  • a light-shielding black ceramic 14 (commonly known as a black ceramic portion 14) is formed in a band shape by printing.
  • a steering wheel 16 and a seat are disposed in the front portion of the vehicle compartment 15 located behind the windshield glass 12.
  • a right-hand drive vehicle is illustrated, but the present invention is not limited thereto.
  • a viewer Mn (mainly a driver) in the passenger compartment 15 can directly see the scenery outside the vehicle through the windshield glass 12 (excluding the black ceramic portion 14) and the left and right side glasses 13 and 13. Can do. However, in the region of the vehicle 10 where the left and right front pillars 11 and 11 and the black sera portions 14 and 14 are arranged, the visual field of the viewer Mn is blocked and the external scenery can be directly viewed. Can not. That is, a blind spot area Ad (see FIG. 2) is generated. The left and right front pillars 11 and 11 and the black ceramic portions 14 and 14 correspond to obstacles.
  • the vehicle 10 of the present invention includes a blind spot assisting device 20.
  • This blind spot assisting device 20 displays an image of the object Oj in the blind spot area Ad that is blocked by the obstacle 11 (front pillar 11) and cannot be seen by the viewer Mn.
  • the object Oj includes organisms such as humans, animals, and plants.
  • the blind spot assisting device 20 is disposed on the front pillar 11 on the right side (driver side) when viewed from the viewer Mn side, and projects an image of the object Oj in the blind spot area Ad blocked by the front pillar 11 and the black ceramic portion 14. It is.
  • the blind spot assisting device 20 is disposed so as to face the front pillar 11 and the black ceramic portion 14 when viewed from the viewer Mn.
  • the blind spot assisting device 20 will be described in detail.
  • the blind spot assisting device 20 includes a semi-transmissive mirror 21 and a mirror 22.
  • both the semi-transmissive mirror 21 and the mirror 22 are collectively referred to as “a pair of mirrors 21 and 22” as appropriate.
  • one of the semi-transmissive mirror 21 and the mirror 22 is appropriately referred to as “one mirror”, and the other of the semi-transmissive mirror 21 and the mirror 22 is appropriately referred to as “the other mirror”. I will say.
  • the semi-transmission mirror 21 is a so-called magic mirror that is located on the viewer Mn side, is incident on the light La representing the image of the object Oj, partially reflects, and transmits the rest.
  • the semi-transmissive mirror 21 is formed as follows.
  • a transflective layer having a desired reflectance is formed by depositing a metal such as aluminum on the surface of a base material made of a translucent resin material.
  • the surface of the base material is coated with a dielectric multilayer film to form a transflective layer having a desired reflectance.
  • the mirror 22 faces the reflective surface 21a of the semi-transmissive mirror 21 with a gap, and reflects the reflected light toward the semi-transmissive mirror 21.
  • This mirror 22 is an aluminum vapor deposition mirror formed by vapor-depositing a metal such as aluminum on the surface of a base material made of the above-described translucent resin material, for example.
  • the semi-transmissive mirror 21 and the mirror 22 are formed in a plate shape such as a flat plate shape. As described above, the pair of mirrors 21 and 22 are positioned so that the reflecting surfaces 21a and 22a face each other. As shown in FIG. 2, one end surface 21 b of the semi-transmissive mirror 21 and one end surface 22 b of the mirror 22 are close to the glass surface of the windshield glass 12 when the vehicle 10 is viewed from above.
  • the end 21c on the side opposite to the one end face 21b in the semi-transmissive mirror 21 is referred to as “the other end face 21c”.
  • the transflective mirror 21 is displaced with respect to the mirror 22 along the reflection surface 22 a of the mirror 22. That is, when the transflective mirror 21 is viewed from the direction perpendicular to the plane Fa (direction Fa toward the plate surface of the semitransparent mirror 21; direction Fa perpendicular to the plate surface), the one end surface 21b of the semitransparent mirror 21 is reflected by the mirror 22. The position is shifted from the surface 22 a toward the glass surface of the windshield glass 12. In other words, the semi-transmissive mirror 21 and the mirror 22 are positioned in a stepped manner in the horizontal direction.
  • a portion 21d of the semi-transmissive mirror 21 that faces the reflecting surface 22a of the mirror 22 is referred to as an “opposing portion 21d”, and a portion 21e that does not face the reflecting surface 22a of the mirror 22, that is, the semi-transmissive mirror 21.
  • the portion on the one end face 21b side is referred to as a “non-opposing portion 21e”.
  • the reflection surface 21a of the semi-transmissive mirror 21 is not parallel to the reflection surface 22a of the mirror 22, but is inclined by a predetermined inclination angle ⁇ .
  • the inclination direction of the reflection surface 21a of the semi-transmission mirror 21 is a direction in which the interval between the reflection surfaces 21a and 22a increases as it goes from the one end surface 21b of the semi-transmission mirror 21 to the other end surface 21c.
  • the tilt direction is a direction in which the semi-transmissive mirror 21 opens toward the viewer Mn with respect to the mirror 22.
  • the reflective surface 21 a of the semi-transmissive mirror 21 may be parallel to the reflective surface 22 a of the mirror 22.
  • FIG. 2 shows a state in which the viewer Mn is seated in the driver's seat, and the viewpoint Pi shows the viewpoint (eye point) of the viewer Mn.
  • blind spot area Ad a small area on the back side of the front pillar 11 (portion represented by hatching in FIG. 2) cannot allow light from this area to enter the pair of mirrors 21 and 22 and the object Oj. This is a so-called invisible region where an image cannot be projected by the pair of mirrors 21 and 22.
  • the reflection surface 21 a of the semi-transmissive mirror 21 is inclined with respect to the reflection surface 22 a of the mirror 22.
  • the tilt direction is a direction in which the semi-transmissive mirror 21 opens toward the viewer Mn with respect to the mirror 22. That is, the interval between the reflecting surfaces 21a and 22a gradually increases in the traveling direction of the light La that travels while repeating reflection between the reflecting surfaces 21a and 22a.
  • the incident angle at which the light La representing the image is incident on the non-facing portion 21e in the reflecting surface 21a of the semi-transmissive mirror 21 is referred to as "first incident angle”.
  • the emission angle at which the light La representing the image is emitted from the pair of mirrors 21 and 22 toward the viewpoint Pi after being repeatedly reflected between the reflection surfaces 21a and 22a is referred to as a “last emission angle”.
  • the final exit angle is greater than the initial incident angle. For this reason, by arbitrarily setting an arbitrary inclination angle ⁇ in advance, the light La (light ray La) incident on the reflecting surface 21a of the semi-transmissive mirror 21 from the object Oj at the first incident angle is represented by the viewpoint Pi and the object. It intersects with a straight line Lp connecting Oj. Therefore, when the viewer Mn visually recognizes the image of the object Oj, there is no deviation between the image reflected on the mirror 22 and the front scenery that is directly visually recognized.
  • the transflective mirror 21 is referred to as “one mirror 21” and the mirror 22 as “other mirror 22” as appropriate for convenience. .
  • the blind spot assisting device 20 includes a case 23 that houses a semi-transmissive mirror 21 and a mirror 22.
  • the case 23 is a divided case composed of a first case half 30 and a second case half 40.
  • the first and second case halves 30 and 40 are divided in the plate surface direction of the pair of mirrors 21 and 22.
  • the first case half 30 is located on the viewer Mn (see FIG. 2) side.
  • the first case half 30 is a substantially rectangular box that is elongated vertically according to the pair of mirrors 21 and 22, and has a surface facing the second case half 40. It is fully open (that is, it has the first opening 31).
  • the first case half 30 is an integrally molded resin product including a peripheral wall 32 that forms the periphery of the first opening 31 and a front wall 33 that covers the front surface of the peripheral wall 32.
  • the first half of the first case half 30 (that is, the side opposite to the first opening 31) is a large second opening formed by leaving both ends (upper end and lower end) in the longitudinal direction. 34.
  • the second opening 34 is greatly opened across the peripheral wall 32 and the front wall 33.
  • the light La (see FIG. 2) emitted from the pair of mirrors 21 and 22 to the viewer Mn side can reach the viewer Mn through the second opening 34.
  • the semi-transmissive mirror 21 is located on the second opening 34 side in the first case half 30.
  • the reflecting surface 21 a of the semi-transmissive mirror 21 faces the opposite side with respect to the second opening 34.
  • the second opening 34 is provided with a louver 35 extending vertically.
  • the louver 35 is constituted by a plurality of vertical plates arranged at a predetermined pitch in the width direction of the first case half 30. As shown in FIGS. 2 and 3, the louver 35 is located on the viewer Mn side with respect to the semi-transmissive mirror 21, and is placed on the pair of mirrors 21 and 22 at a predetermined entry angle from the viewer Mn side. It functions as a light shielding unit that blocks incident external light.
  • the first opening 31 of the first case half 30 is detachably closed by the second case half 40.
  • the second case half 40 has a substantially flat lid shape elongated vertically. Both ends (upper end and lower end) in the longitudinal direction of the second case half 40 have a plurality of fitting pieces 41 and 41 and a plurality of coupling flanges 42.
  • the plurality of fitting pieces 41, 41 extend from both longitudinal ends of the second case half 40 toward the first opening 31 of the first case half 30 and can be fitted into the first opening 31. It is.
  • Each of the plurality of coupling flanges 42 has a plurality of screw insertion holes 42a and a plurality of positioning holes 42b penetrating therethrough.
  • the first case half 30 has a plurality of coupling protrusions 36 bulging from the outer surface of the peripheral wall 32.
  • the plurality of coupling protrusions 36 have a plurality of female screws 36a and a plurality of positioning projections 36b.
  • the procedure for assembling the second case half 40 to the first case half 30 is as follows. First, the plurality of fitting pieces 41 and 41 are fitted into the first opening 31. Next, the second case half 40 is overlaid on the first case half 30 and the plurality of positioning holes 42b and the plurality of positioning projections 36b are fitted to align both. Finally, the plurality of screws 43 inserted from the plurality of screw insertion holes 42a are screwed into the plurality of female screws 36a. Thus, the assembly work of the case 23 is completed.
  • the first facing surface 37 (the inner surface 37 of the front wall 33) facing the plate surface of one of the mirrors 21 in the first case half 30 is a plurality of first mirror support portions 38 and a plurality of first fittings. And a hole 39.
  • the plurality of first mirror support portions 38 can be supported by partially contacting one of the mirrors 21.
  • the plurality of first mirror support portions 38 have a spherical shape protruding from the first facing surface 37 toward the plate surface of the one mirror 21.
  • the plurality of first fitting holes 39 are located in the vicinity of the plurality of first mirror support portions 38.
  • the second facing surface 44 that faces the plate surface of the other mirror 22 in the second case half 40 has a plurality of second mirror support portions 45 and a plurality of second fitting holes 46.
  • the plurality of second mirror support portions 45 can be supported by partially contacting the other mirror 22.
  • the plurality of second mirror support portions 45 may have a spherical shape (not shown) protruding from the second facing surface 44 toward the plate surface of the other mirror 22.
  • the plurality of second fitting holes 46 are located in the vicinity of the plurality of second mirror support portions 45.
  • At least one of the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 is constituted by an elastic member. More preferably, only the plurality of second mirror support portions 45 that support the mirror 22 facing the reflecting surface 21a of the semi-transmissive mirror 21 among the plurality of first and second mirror support portions 38 and 45 are elastic members. It is constituted by.
  • This elastic member is preferably made of rubber. The rubber is attached to the second facing surface 44 of the second case half 40 by, for example, pasting.
  • the tip surface may be a flat surface as shown in FIG. 5 instead of a spherical shape.
  • the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 are preferably three each.
  • the plurality of first fitting holes 39 and the plurality of second fitting holes 46 are also preferably three each.
  • a plurality of spacers 50 are interposed between one mirror 21 and the other mirror 22.
  • the plurality of spacers 50 include a plurality of first fitting portions 51, a plurality of second fitting portions 52, a plurality of first contact portions 53, and a plurality of second contact portions 54. That is, one spacer 50 has the 1st fitting part 51, the 2nd fitting part 52, the 1st contact part 53, and the 2nd contact part 54 one each.
  • the plurality of first fitting portions 51 extend from the plurality of spacers 50 toward the first facing surface 37 along the edge 21f of the one mirror 21, and can be fitted into the plurality of first fitting holes 39. is there.
  • the plurality of second fitting portions 52 extend from the plurality of spacers 50 toward the second facing surface 44 along the edge 22c of the other mirror 22, and can be fitted into the plurality of second fitting holes 46. is there.
  • the plurality of first contact portions 53 are formed on each end surface of the plurality of spacers 50 facing the reflection surface 21 a of one mirror 21. The plurality of first contact portions 53 can partially contact the plate surface (reflection surface 21a) of one mirror 21.
  • the plurality of second contact portions 54 are formed on each other end surface of the plurality of spacers 50 facing the reflection surface 22 a of the other mirror 22.
  • the plurality of second contact portions 54 can partially contact the plate surface (reflection surface 22a) of the other mirror 22.
  • the positions of the plurality of first and second mirror support portions 38 and 45 and the plurality of first and second contact portions 53 and 54 are in the direction perpendicular to the plane Fa of one mirror 21 (on the plate surface of the one mirror 21).
  • Direction Fa which coincides (overlaps) as seen from direction Fa) perpendicular to the plate surface.
  • the positions of the plurality of second mirror support portions 45 coincide with the positions of the plurality of first mirror support portions 38 when viewed from the plane direction Fa of the one mirror 21.
  • the positions of the plurality of first contact portions 53 coincide with the positions of the plurality of first mirror support portions 38 when viewed from the plane direction Fa of the one mirror 21.
  • the positions of the plurality of second contact portions 54 coincide with the positions of the plurality of second mirror support portions 45 when viewed from the plane direction Fa of the one mirror 21.
  • the distance and angle between the one mirror 21 and the other mirror 22 are defined by the plurality of first and second contact portions 53 and 54 of the plurality of spacers 50.
  • the number of the first and second mirror support portions 38 and 45, the number of the spacers 50, and the number of the first and second contact portions 53 and 54 are three each.
  • the three spacers 50 are located at the end of the semi-transparent mirror 21 and the mirror 22 as much as possible in the portion where the mirror 22 and the mirror 22 overlap each other, and at a triangular position.
  • FIG. 7A schematically shows the disassembled state of the blind spot assisting device 20 in an exploded manner.
  • FIG. 7B schematically shows the assembled state of the blind spot assisting device 20 in a developed state.
  • the protruding heights from the first facing surface 37 to the tips of the plurality of first mirror support portions 38 are all the same.
  • the protruding heights from the second facing surface 44 to the tips of the plurality of second mirror support portions 45 are all the same.
  • the lengths of the plurality of spacers 50 from the tip of the first contact portion 53 to the tip of the second contact portion 54 are all the same. Therefore, as shown in FIG.
  • the contact pressures of the first and second contact portions 53 and 54 are substantially uniform.
  • the plurality of spacers 50 interposed between the pair of mirrors 21 and 22 facing each other have a plurality of first contact portions 53 and a plurality of second contact portions 54.
  • the plurality of first and second contact portions 53 and 54 can partially contact the plate surfaces of the mirrors 21 and 22. That is, the plate surfaces of the pair of mirrors 21 and 22 are not in contact with the entirety of the plurality of spacers 50.
  • Managing the dimensional tolerances at the tips of the plurality of first and second contact portions 53, 54 of the plurality of spacers 50 manages the dimensional tolerances of the first and second case halves 30, 40. Compared to the case, it is easier. Therefore, the distance between the pair of mirrors 21 and 22 and the predetermined angle can be easily defined by the plurality of first and second contact portions 53 and 54. Without being affected by the case 23, the distance between the pair of mirrors 21 and 22 and a predetermined angle can be accurately ensured. As a result, an image in the blind spot region can be projected on the pair of mirrors 21 and 22 without distortion. The so-called visibility in which the viewer Mn clearly sees the image in the blind spot area Ad shown in FIG. 2 can be improved.
  • the first facing surface 37 facing the plate surface of one mirror 21 in the first case half 30 is a plurality of first mirrors.
  • a support portion 38 is provided.
  • the plurality of first mirror support portions 38 can partially contact one of the mirrors 21. That is, the plate surface of one mirror 21 does not contact the entire first facing surface 37.
  • One mirror 21 can be supported by the plurality of first contact portions 53 and the plurality of first mirror support portions 38.
  • the second facing surface 44 that faces the plate surface of the other mirror 22 in the second case half 40 has a plurality of second mirror support portions 45.
  • the plurality of second mirror support portions 45 can partially contact the other mirror 22. That is, the plate surface of the other mirror 22 is not in contact with the entire second facing surface 44.
  • the other mirror 22 can be supported by the plurality of second contact portions 54 and the plurality of second mirror support portions 45.
  • the pair of mirrors 21 and 22 can be arranged at an accurate position in the case 23, and the flatness of the pair of mirrors 21 and 22 is increased and supported, that is, the flatness of one surface. (Uniformity) can be improved.
  • the plurality of first fitting holes 39 of the first case half 30 are located in the vicinity of the plurality of first mirror support portions 38.
  • the plurality of second fitting holes 46 of the second case half 40 are located in the vicinity of the plurality of second mirror support portions 45.
  • the plurality of spacers 50 include a plurality of first fitting portions 51 that can be fitted into the plurality of first fitting holes 39 and a plurality of second fitting portions 52 that can be fitted into the plurality of second fitting holes 46. And have. Therefore, a plurality of first and second contact portions for the plurality of first and second mirror support portions 38 and 45 only by the fitting structure of the fitting holes 39 and 46 and the fitting portions 51 and 52.
  • Positioning 53 and 54 can be performed accurately and easily. Since accurate positioning can be performed, the angles of the pair of mirrors 21 and 22 can be ensured with higher accuracy.
  • the plurality of first fitting portions 51 are along the edge 21 f of one mirror 21.
  • the plurality of second fitting portions 52 are along the edge 22 c of the other mirror 22. For this reason, positioning of the pair of mirrors 22 with respect to the case 23 in the direction along the plate surfaces of the pair of mirrors 21 and 22 can be easily performed by the plurality of first and second fitting portions 51 and 52.
  • the positions of the plurality of first contact portions 53 are the plurality of first mirror support portions 38 as viewed from the direction perpendicular to the face Fa of the one mirror 21. It matches the position of.
  • the positions of the plurality of second contact portions 54 coincide with the positions of the plurality of second mirror support portions 45 when viewed from the plane direction Fa of the one mirror 21.
  • the positions of the plurality of first contact portions 53 and the positions of the plurality of second contact portions 54 are in agreement (overlapping) with each other when viewed from the direction perpendicular to the face Fa of one mirror 21.
  • the positions of the plurality of first and second mirror support portions 38 and 45 and the plurality of first and second contact portions 53 and 54 coincide with each other when viewed from the plane direction Fa of one mirror 21.
  • one each of the first and second mirror support portions 38 and 45 and the first and second contact portions 53 and 54 are arranged in a straight line in the perpendicular direction Fa of one mirror 21 ( overlapping).
  • the mirrors 21 and 22 are in positions that coincide with each other when viewed from the plane direction Fa of the one mirror 21 (overlapping), by the mirror support portions 38 and 45 and the contact portions 53 and 54. Supported.
  • the plurality of first and second contact portions 53 and 54 and the plurality of first and second mirror support portions 38 and 45 are respectively three.
  • the contact portions 53 and 54 and the mirror support portions 38 and 45 are “two” respectively, it is not easy to ensure the flatness of the pair of mirrors 21 and 22. Further, when there are “four” each of the contact portions 53 and 54 and the mirror support portions 38 and 45, there are four support points. It is not easy to manage each dimensional tolerance so that the pair of mirrors 21 and 22 is uniformly supported by four support points while ensuring the flatness of the pair of mirrors 21 and 22. On the other hand, in this embodiment, there are “three” each of the contact portions 53 and 54 and the mirror support portions 38 and 45, respectively. With the three support points, the pair of mirrors 21 and 22 can be supported relatively easily and uniformly and stably.
  • the shape of the plurality of first and second contact portions 53, 54 is a protruding spherical shape. For this reason, the plurality of first and second contact portions 53, 54 can be brought into point contact with the plate surfaces of the pair of mirrors 21, 22. The tips of the plurality of first and second contact portions 53 and 54 included in the plurality of spacers 50 can be easily set to dimensions as designed.
  • the shapes of the plurality of first and second mirror support portions 38 and 45 can be protruding spherical shapes. For this reason, the plurality of first and second mirror support portions 38 and 45 can be brought into point contact with the plate surfaces of the pair of mirrors 21 and 22.
  • the front ends of the plurality of first and second mirror support portions 38 and 45 included in the first and second case halves 30 and 40 can be easily sized as designed.
  • At least one of the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 is constituted by an elastic member.
  • the elastic member has sufficient elasticity to prevent backlash between the members due to dimensional errors during assembly. For this reason, rattling can be easily prevented by the elastic member.
  • the mirror support portion 38 that supports the semi-transmissive mirror 21 is not constituted by an elastic member. Only the mirror support portion 45 that supports the mirror 22 is formed of an elastic member. That is, the elastic member is located only on the back surface of the mirror 22 (the surface opposite to the reflecting surface 22a). For this reason, the elastic member cannot be seen from the viewer Mn side (see FIG. 2). The appearance of the blind spot assisting device 20 can be improved.
  • the elastic member (second mirror support portion 45) is made of rubber. For this reason, a structure can be simplified compared with the case where an elastic member is comprised by other members, such as a spring.
  • blind spot assisting device 20 has been described as an example provided in the vehicle 10, it can be applied to other vehicles and is not limited to these types. That is, the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.
  • the blind spot assisting device 20 of the present embodiment is disposed on the right front pillar 11 when viewed from the driver's seat side of the vehicle 10, but a similar blind spot assisting device is also disposed on the left front pillar 11. Also good.
  • a blind spot assisting device that displays an image of a blind spot area that is disposed on a center pillar, a rear pillar, or the like and is blocked by these may be used.
  • the present invention can be widely applied to fields other than the vehicle 10 as the blind spot assisting device 20 that projects the image of the object Oj in the blind spot area Ad blocked by the obstacle.
  • the blind spot assisting device 20 according to the present invention when used in a house, the blind spot assisting device 20 of the ceiling is attached to the ceiling and only the incident part is taken out of the wall etc. You can see the sky and direct sunlight from the ceiling indoors. It is particularly suitable for densely populated houses and houses with circumstances where ordinary windows cannot be attached.
  • a blind spot assisting device 20 having a large area is embedded under the floor of a higher floor, and only the light incident portion is exposed to the outside. It is possible to feel under the feet and emphasize the height of the building. In order to obtain the same effect, conventionally, it was necessary to provide a space under the floor, but the blind spot assisting device 20 of the present invention is suitable because it can be easily arranged in an existing building.
  • the blind spot assisting device 20 of the present invention is arranged at the corner of the saddle at an intersection where the fence is standing close to the road and the line of sight is bad, thereby walking the blind spot area Ad. Can quickly recognize the presence of people and vehicles, and contribute to the prevention of accidents at the beginning of encounters.
  • the pair of mirrors 21 and 22 of the present invention may be a plate-like configuration disposed so as to face each other, and may be a curved mirror in addition to the flat plate mirror.
  • the pair of mirrors 21 and 22 can have a curved configuration when the vehicle 10 is viewed from above (see Japanese Patent Application Laid-Open No. 2016-094117).
  • the reflecting surface 21a of the semi-transmissive mirror 21 has a concave curved shape.
  • the reflection surface 22 a of the mirror 22 has a curved surface shape that is convex toward the reflection surface 21 a of the semi-transmissive mirror 21.
  • the blind spot assisting device 20 of the present invention is suitable for use in the left and right front pillars 11 of the vehicle 10.

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Abstract

In order to achieve a distance and an angle between a pair of mirrors without being affected by a casing, this blind spot assistant device 20 includes: a semi-transparent mirror 21; a mirror 22 facing a reflective surface 21a of the semi-transparent mirror 21 with a distance therebetween; and first and second half casing bodies 30, 40 accommodating the pair of mirrors 21, 22. A first facing surface 37 of the first half casing body 30 has a plurality of first mirror supporting parts 38 supporting the semi-transparent mirror 21. A second facing surface 44 of the second half casing body 40 has a plurality of second mirror supporting parts 45 supporting the mirror 22. A plurality of spacers interposed between the pair of mirrors 21, 22 each have: a first contact part 53 partially contacting the plate surface of the semi-transparent mirror 21; and a second contact part 54 partially contacting the plate surface of the mirror 22. The distance and angle between the pair of mirrors 21, 22 are determined by the plurality of first and second contact parts 53, 54 of the spacers 50.

Description

死角補助装置Blind spot assist device
　本発明は、障害物により遮られて視認者から見えない死角領域にある像を映す死角補助装置に関する。 The present invention relates to a blind spot assisting device that projects an image in a blind spot area that is blocked by an obstacle and cannot be seen by a viewer.
　例えば、自動車に乗っている運転者（視認者）からは、車体の左右のフロントピラーよりも外方の風景が、これらのフロントピラーに遮られて見えない。つまり、左右のフロントピラーは障害物の一種である。これに対し、障害物により遮られて視認者から見えない、いわゆる死角領域にある像を映す死角補助装置が、特許文献１から知られている。 For example, a driver (viewer) riding in a car cannot see the scenery outside the front pillars on the left and right of the vehicle body because they are blocked by these front pillars. That is, the left and right front pillars are a kind of obstacle. On the other hand, Patent Document 1 discloses a blind spot assisting device that projects an image in a so-called blind spot area that is blocked by an obstacle and cannot be seen by a viewer.
　特許文献１で知られている死角補助装置は、互いに平行に配置された、板状（平面状）の半透過ミラーと板状のミラーとの組合せを、基本構成としている。半透過ミラーは、ミラーよりも視認者側に位置し、物体の像を表す光を入射して一部を反射し残りを透過する。ミラーは、半透過ミラーの反射面に間隔を有して対面し、入射した光を半透過ミラーへ向かって反射する。これらの一対のミラーは、ケースに収納されている。このケースは、第１ケース半体と第２ケース半体とからなる、二分割ケースである。 The blind spot assisting device known from Patent Document 1 has a basic configuration of a combination of a plate-like (planar) semi-transmissive mirror and a plate-like mirror arranged in parallel to each other. The semi-transmissive mirror is positioned closer to the viewer than the mirror, and receives light representing the image of the object, reflects a part thereof, and transmits the rest. The mirror faces the reflective surface of the semi-transmissive mirror with a gap, and reflects incident light toward the semi-transmissive mirror. The pair of mirrors are housed in a case. This case is a two-part case composed of a first case half and a second case half.
　第１ケース半体の開放端と第２ケース半体の開放端とは、互いに向かい合っている。各開放端が組み合わされることによって、１つのケースが構成される。第１ケース半体は、第２ケース半体よりも視認者側に位置している。第２ケース半体は、第１ケース半体の中に嵌め込み可能である。一対のミラーは、第１ケース半体と第２ケース半体とに挟み込まれることによって、ケース内に固定される。 The open end of the first case half and the open end of the second case half face each other. One case is formed by combining the open ends. The first case half is located closer to the viewer than the second case half. The second case half can be fitted into the first case half. The pair of mirrors is fixed in the case by being sandwiched between the first case half and the second case half.
　この死角補助装置では、死角領域にある物体の像を視認者が明確に視認する、いわゆる視認性を高めることが好ましい。視認性を高めるには、死角領域にある像を、一対のミラーに歪みなく映すことが求められる。そのためには、一対のミラー同士の間隔や所定の角度を精度よく確保する必要がある。従って、第１及び第２ケース半体のなかの、一対のミラーを直接に挟み込む、挟み込み面の平面度を十分に管理することが重要である。しかし、挟み込み面の平面度の公差は、第１及び第２ケース半体全体の寸法公差の影響を受けやすい。しかも、過大な外力がケースに作用した場合には、このケースの歪みによって、挟み込み面の平面度が変化し得る。 In this blind spot assisting device, it is preferable to improve the so-called visibility in which the viewer can clearly see the image of the object in the blind spot area. In order to improve the visibility, it is required to project an image in the blind spot area on a pair of mirrors without distortion. For this purpose, it is necessary to ensure a gap between the pair of mirrors and a predetermined angle with high accuracy. Therefore, it is important to sufficiently manage the flatness of the sandwiching surface that directly sandwiches the pair of mirrors in the first and second case halves. However, the tolerance of the flatness of the sandwiching surface is easily affected by the dimensional tolerance of the entire first and second case halves. In addition, when an excessive external force is applied to the case, the flatness of the sandwiching surface can change due to the distortion of the case.
特開２０１６－１０１８１４号公報JP 2016-101814 A
　本発明は、ケースの影響を受けることなく、一対のミラー同士の間隔や所定の角度を精度よく確保できる技術を提供することを課題とする。 This invention makes it a subject to provide the technique which can ensure the space | interval of a pair of mirrors, and a predetermined angle accurately, without being influenced by a case.
　請求項１による発明によれば、障害物により遮られて視認者から見えない死角領域にある物体の像を映す死角補助装置は、前記視認者側に位置し、前記像を表す光を入射して一部を反射し残りを透過する平板状の半透過ミラーと、この半透過ミラーの反射面に間隔を有して対面し、前記反射された光を前記半透過ミラーへ向かって反射する平板状のミラーと、これらの半透過ミラー及びミラーを収納するケースとを含む。このケースは、第１ケース半体と第２ケース半体とからなる、分割ケースである。 According to the invention of claim 1, a blind spot assisting device that projects an image of an object in a blind spot area that is obstructed by an obstacle and cannot be seen by a viewer is located on the viewer side and receives light representing the image. A flat plate-shaped semi-transmissive mirror that reflects a part of the light and transmits the remainder, and a flat plate that faces the reflective surface of the semi-transmissive mirror with a gap and reflects the reflected light toward the semi-transmissive mirror And a semi-transparent mirror and a case for housing the mirror. This case is a divided case composed of a first case half and a second case half.
　前記半透過ミラーと前記ミラーとのいずれか一方のことを、一方のミラーと言う。前記半透過ミラーと前記ミラーとのいずれか他方のことを、他方のミラーと言う。前記第１ケース半体のなかの、前記一方のミラーの板面に対向する第１対向面は、前記一方のミラーに部分的に接触して支持することが可能な複数の第１ミラー支持部と、この複数の第１ミラー支持部の近傍に位置した複数の第１嵌合孔とを有する。前記第２ケース半体のなかの、前記他方のミラーの板面に対向する第２対向面は、前記他方のミラーに部分的に接触して支持することが可能な複数の第２ミラー支持部と、この複数の第２ミラー支持部の近傍に位置した複数の第２嵌合孔とを有する。 One of the transflective mirror and the mirror is referred to as one mirror. The other of the semi-transmissive mirror and the mirror is referred to as the other mirror. A plurality of first mirror support portions capable of supporting the first opposing surface of the first case half facing the plate surface of the one mirror partially in contact with the first mirror. And a plurality of first fitting holes located in the vicinity of the plurality of first mirror support portions. A plurality of second mirror support portions in the second case half that can be supported by a second facing surface that faces the plate surface of the other mirror in partial contact with the other mirror. And a plurality of second fitting holes located in the vicinity of the plurality of second mirror support portions.
　前記一方のミラーと前記他方のミラーとの間には、複数のスペーサーが介在している。この複数のスペーサーは、前記一方のミラーの縁に沿いつつ前記第１対向面へ向かって延びて、前記複数の第１嵌合孔に嵌合可能な複数の第１嵌合部と、前記他方のミラーの縁に沿いつつ前記第２対向面へ向かって延びて、前記複数の第２嵌合孔に嵌合可能な複数の第２嵌合部と、前記一方のミラーの板面に部分的に接触することが可能な複数の第１接触部と、前記他方のミラーの板面に部分的に接触することが可能な複数の第２接触部とを有する。 A plurality of spacers are interposed between the one mirror and the other mirror. The plurality of spacers extend along the edge of the one mirror toward the first opposing surface, and a plurality of first fitting portions that can be fitted into the plurality of first fitting holes, and the other A plurality of second fitting portions extending along the edge of the mirror toward the second facing surface and capable of fitting into the plurality of second fitting holes, and partially on the plate surface of the one mirror And a plurality of second contact portions capable of partially contacting the plate surface of the other mirror.
　前記一方のミラーと前記他方のミラーとの、互いの間隔及び角度は、前記複数のスペーサーの前記複数の第１及び第２接触部によって規定されていることを特徴とする。 A distance and an angle between the one mirror and the other mirror are defined by the plurality of first and second contact portions of the plurality of spacers.
　請求項２に記載のごとく、好ましくは、前記複数の第１接触部の位置は、前記一方のミラーの面直方向（一方のミラーの板面に向かう方向。板面に垂直な方向）から見て、前記複数の第１ミラー支持部の位置と合致している。前記複数の第２接触部の位置は、前記一方のミラーの面直方向から見て、前記複数の第２ミラー支持部の位置と合致している。前記複数の第１接触部の位置と前記複数の第２接触部の位置とは、前記一方のミラーの面直方向から見て、互いに合致している。 According to a second aspect of the present invention, preferably, the positions of the plurality of first contact portions are viewed from a direction perpendicular to the surface of the one mirror (a direction toward the plate surface of the one mirror; a direction perpendicular to the plate surface). The positions of the plurality of first mirror support portions coincide with each other. The positions of the plurality of second contact portions coincide with the positions of the plurality of second mirror support portions when viewed from the direction perpendicular to the surface of the one mirror. The positions of the plurality of first contact portions and the positions of the plurality of second contact portions coincide with each other when viewed from the direction perpendicular to the surface of the one mirror.
　請求項３に記載のごとく、好ましくは、前記複数の第１及び第２ミラー支持部と、前記複数の第１及び第２接触部とは、それぞれ３個ずつである。 As described in claim 3, preferably, each of the plurality of first and second mirror support portions and the plurality of first and second contact portions is three.
　請求項４に記載のごとく、好ましくは、前記複数の第１及び第２接触部の形状は、突出した球面状である。 As described in claim 4, preferably, the shapes of the plurality of first and second contact portions are protruding spherical shapes.
　請求項５に記載のごとく、好ましくは、前記複数の第１及び第２ミラー支持部の形状は、突出した球面状である。 As described in claim 5, it is preferable that the shapes of the plurality of first and second mirror support portions are protruding spherical shapes.
　請求項６に記載のごとく、好ましくは、前記複数の第１ミラー支持部と前記複数の第２ミラー支持部との、少なくとも一方は、弾性部材によって構成されている。 As described in claim 6, preferably, at least one of the plurality of first mirror support portions and the plurality of second mirror support portions is constituted by an elastic member.
　請求項７に記載のごとく、さらに好ましくは、前記複数の第１ミラー支持部と前記複数の第２ミラー支持部のうち、前記半透過ミラーを支持する方のミラー支持部は、前記弾性部材によって構成されることなく、前記ミラーを支持する方のミラー支持部のみが、前記弾性部材によって構成されている。 As described in claim 7, more preferably, of the plurality of first mirror support portions and the plurality of second mirror support portions, the mirror support portion that supports the semi-transmissive mirror is formed by the elastic member. Without being configured, only the mirror support portion that supports the mirror is configured by the elastic member.
　請求項８に記載のごとく、好ましくは、前記弾性部材は、ラバーによって構成されている。 As described in claim 8, preferably, the elastic member is made of rubber.
　請求項１に係る発明では、互いに向かい合う一対のミラー間に介在した複数のスペーサーは、複数の第１接触部及び複数の第２接触部を有する。複数の第１及び第２接触部は、各ミラーの板面に対して部分的に接触をすることが可能である。つまり、一対のミラーの各板面は、複数のスペーサーの全体に接触しているわけではない。複数のスペーサーに有している複数の第１及び第２接触部の、先端の寸法公差を管理することは、第１及び第２ケース半体の各寸法公差を管理する場合に比べて、容易である。このため、一対のミラーの互いの間隔及び所定の角度を、複数の第１及び第２接触部によって、容易に規定することができる。ケースの影響を受けることなく、一対のミラー同士の間隔や所定の角度を精度よく確保することができる。この結果、死角領域にある像を、一対のミラーに歪みなく映すことができる。死角領域にある像を視認者が明確に視認する、いわゆる視認性を高めることができる。 In the invention according to claim 1, the plurality of spacers interposed between the pair of mirrors facing each other have a plurality of first contact portions and a plurality of second contact portions. The plurality of first and second contact portions can partially contact the plate surface of each mirror. That is, the plate surfaces of the pair of mirrors are not in contact with the entire plurality of spacers. It is easier to manage the dimensional tolerances of the tips of the multiple first and second contact portions of the multiple spacers than when managing the dimensional tolerances of the first and second case halves. It is. For this reason, the mutual space | interval and predetermined angle of a pair of mirror can be easily prescribed | regulated by the some 1st and 2nd contact part. Without being affected by the case, the distance between the pair of mirrors and the predetermined angle can be accurately ensured. As a result, an image in the blind spot region can be projected on the pair of mirrors without distortion. It is possible to improve the so-called visibility that the viewer can clearly see the image in the blind spot area.
　さらに、請求項１に係る発明では、第１ケース半体のなかの、一方のミラーの板面に対向する第１対向面は、複数の第１ミラー支持部を有する。この複数の第１ミラー支持部は、一方のミラーに部分的に接触をすることが可能である。つまり、一方のミラーの板面は、第１対向面の全体に接触しているわけではない。複数の第１接触部と複数の第１ミラー支持部とによって、一方のミラーを支持することができる。 Furthermore, in the invention according to claim 1, the first facing surface facing the plate surface of one of the mirrors in the first case half has a plurality of first mirror support portions. The plurality of first mirror support portions can partially contact one of the mirrors. That is, the plate surface of one mirror is not in contact with the entire first facing surface. One mirror can be supported by the plurality of first contact portions and the plurality of first mirror support portions.
　また、第２ケース半体のなかの、他方のミラーの板面に対向する第２対向面は、複数の第２ミラー支持部を有する。この複数の第２ミラー支持部は、他方のミラーに部分的に接触をすることが可能である。つまり、他方のミラーの板面は、第２対向面の全体に接触しているわけではない。複数の第２接触部と複数の第２ミラー支持部とによって、他方のミラーを支持することができる。 Also, the second facing surface facing the plate surface of the other mirror in the second case half has a plurality of second mirror support portions. The plurality of second mirror support portions can partially contact the other mirror. That is, the plate surface of the other mirror is not in contact with the entire second facing surface. The other mirror can be supported by the plurality of second contact portions and the plurality of second mirror support portions.
　このように、一対のミラーを、ケース内の正確な位置に配置することができるとともに、一対のミラーの平面度を高めて支持する、つまり１つの面の平らな度合い（均一性）を高めることができる。 In this way, the pair of mirrors can be arranged at an accurate position in the case, and supported by increasing the flatness of the pair of mirrors, that is, increasing the flatness (uniformity) of one surface. Can do.
　さらに、請求項１に係る発明では、第１ケース半体の複数の第１嵌合孔は、複数の第１ミラー支持部の近傍に位置している。第２ケース半体の複数の第２嵌合孔は、複数の第２ミラー支持部の近傍に位置している。複数のスペーサーは、複数の第１嵌合孔に嵌合可能な複数の第１嵌合部と、複数の第２嵌合孔に嵌合可能な複数の第２嵌合部とを有する。このため、各嵌合孔と各嵌合部との嵌合構造だけによって、複数の第１及び第２ミラー支持部に対する、複数の第１及び第２接触部の位置決めを、正確に且つ容易に行うことができる。正確な位置決めができるので、一対のミラーの角度を、より一層精度よく確保することができる。 Further, in the invention according to claim 1, the plurality of first fitting holes of the first case half are located in the vicinity of the plurality of first mirror support portions. The plurality of second fitting holes of the second case half are located in the vicinity of the plurality of second mirror support portions. The plurality of spacers include a plurality of first fitting portions that can be fitted into the plurality of first fitting holes, and a plurality of second fitting portions that can be fitted into the plurality of second fitting holes. Therefore, the positioning of the plurality of first and second contact portions with respect to the plurality of first and second mirror support portions can be accurately and easily performed only by the fitting structure of each fitting hole and each fitting portion. It can be carried out. Since accurate positioning can be performed, the angle between the pair of mirrors can be ensured with higher accuracy.
　しかも、複数の第１嵌合部は、一方のミラーの縁に沿っている。複数の第２嵌合部は、他方のミラーの縁に沿っている。このため、一対のミラーの板面に沿った方向の、ケースに対する一対のミラーの位置決めを、複数の第１及び第２嵌合部によって容易に行うことができる。 Moreover, the plurality of first fitting portions are along the edge of one mirror. The plurality of second fitting portions are along the edge of the other mirror. For this reason, the positioning of the pair of mirrors with respect to the case in the direction along the plate surfaces of the pair of mirrors can be easily performed by the plurality of first and second fitting portions.
　請求項２に係る発明では、複数の第１接触部の位置は、一方のミラーの面直方向（一方のミラーの板面に向かう方向。板面に垂直な方向）から見て、複数の第１ミラー支持部の位置と合致している。複数の第２接触部の位置は、一方のミラーの面直方向から見て、複数の第２ミラー支持部の位置と合致している。複数の第１接触部の位置と複数の第２接触部の位置とは、一方のミラーの面直方向から見て、互いに合致している（重なっている）。この結果、一方のミラーの面直方向から見て、複数の第１及び第２ミラー支持部と複数の第１及び第２接触部の、各位置はそれぞれ合致している。このため、各ミラーは、一方のミラーの面直方向から見て互いに合致した位置にある（重なり合っている）各ミラー支持部と各接触部とによって、支持される。 In the invention according to claim 2, the positions of the plurality of first contact portions are the plurality of first contact portions when viewed from the direction perpendicular to the surface of one mirror (the direction toward the plate surface of one mirror; the direction perpendicular to the plate surface). Matches the position of one mirror support. The positions of the plurality of second contact portions coincide with the positions of the plurality of second mirror support portions when viewed from the direction perpendicular to the surface of one of the mirrors. The positions of the plurality of first contact portions and the positions of the plurality of second contact portions coincide with each other (overlap) when viewed from the direction perpendicular to the surface of one mirror. As a result, the positions of the plurality of first and second mirror support portions and the plurality of first and second contact portions coincide with each other when viewed from the direction perpendicular to the surface of one of the mirrors. For this reason, each mirror is supported by each mirror support part and each contact part which are in the position which mutually matched (it overlaps) seeing from the surface normal direction of one mirror.
　例えば、第１ケース半体の複数の第１ミラー支持部から、一方のミラーの板面へ、力が作用した場合を考える。この力は、一方のミラーの面直方向から見て互いに合致した位置にある各ミラー支持部と各接触部とを通って、第２ケース半体に、そのまま伝わる。このため、一対のミラーには、過大な曲げ力の集中が発生しない。従って、作用した力によって一対のミラーに発生する歪みを、より一層防止することができる。 For example, let us consider a case where a force is applied from the plurality of first mirror support portions of the first case half to the plate surface of one of the mirrors. This force is transmitted as it is to the second case half through the respective mirror support portions and the respective contact portions that are in a mutually coincident position when viewed from the direction perpendicular to the surface of one of the mirrors. For this reason, excessive concentration of bending force does not occur in the pair of mirrors. Therefore, distortion generated in the pair of mirrors due to the applied force can be further prevented.
　請求項３に係る発明では、複数の第１及び第２接触部と、複数の第１及び第２ミラー支持部とは、それぞれ３個ずつである。 In the invention according to claim 3, the plurality of first and second contact portions and the plurality of first and second mirror support portions are three each.
　各接触部と各ミラー支持部とが、それぞれ「２個」ずつの場合には、一対のミラーの平面度を確保することは、容易ではない。また、各接触部と各ミラー支持部とが、それぞれ「４個」ずつの場合には、各ミラーを支持する支持点が、４箇所ずつになる。一対のミラーの平面度を確保しつつ、これら一対のミラーを４つの支持点で均一に支持するように、各寸法公差を管理することは、容易ではない。これに対し、請求項３に係る発明では、各接触部と各ミラー支持部とが、それぞれ「３個」ずつである。３つの支持点により、一対のミラーを比較的容易に均一に、且つ安定して支持することができる。 When there are “two” each contact portion and each mirror support portion, it is not easy to ensure the flatness of the pair of mirrors. Further, when there are “four” each contact portion and each mirror support portion, there are four support points for supporting each mirror. It is not easy to manage each dimensional tolerance so that the flatness of the pair of mirrors is ensured and the pair of mirrors are uniformly supported by the four support points. On the other hand, in the invention according to claim 3, there are “three” each of the contact portions and the mirror support portions. With the three support points, the pair of mirrors can be supported relatively easily, uniformly and stably.
　請求項４に係る発明では、複数の第１及び第２接触部の形状は、突出した球面状である。このため、第１及び第２接触部を一対のミラーの各板面に点接触させることができる。スペーサーに有している複数の第１及び第２接触部の先端を設計通りの寸法としやすい。 In the invention according to claim 4, the shapes of the plurality of first and second contact portions are protruding spherical shapes. For this reason, the first and second contact portions can be brought into point contact with the plate surfaces of the pair of mirrors. The tips of the plurality of first and second contact portions provided in the spacer are easily set to dimensions as designed.
　請求項５に係る発明では、複数の第１及び第２ミラー支持部の形状は、突出した球面状である。このため、第１及び第２ミラー支持部を一対のミラーの各板面に点接触させることができる。第１及び第２ケース半体に有している複数の第１及び第２ミラー支持部の先端を設計通りの寸法としやすい。 In the invention according to claim 5, the shapes of the plurality of first and second mirror support portions are protruding spherical shapes. For this reason, the first and second mirror support portions can be brought into point contact with the plate surfaces of the pair of mirrors. The front ends of the plurality of first and second mirror support portions included in the first and second case halves can be easily sized as designed.
　請求項６に係る発明では、複数の第１ミラー支持部と複数の第２ミラー支持部との、少なくとも一方は、弾性部材によって構成されている。ケースに一対のミラーとスペーサーとを組み付け時に、一対のミラーの板厚方向の寸法公差がある。弾性部材は、組み付け時に、寸法誤差による各部材同士のガタツキを防止可能な程度の、弾性を有する。このため、弾性部材によってガタツキを容易に防止することができる。 In the invention according to claim 6, at least one of the plurality of first mirror support portions and the plurality of second mirror support portions is constituted by an elastic member. When the pair of mirrors and the spacer are assembled to the case, there is a dimensional tolerance in the thickness direction of the pair of mirrors. The elastic member has sufficient elasticity to prevent backlash between the members due to dimensional errors during assembly. For this reason, rattling can be easily prevented by the elastic member.
　請求項７に係る発明では、半透過ミラーを支持する方のミラー支持部は、弾性部材によって構成されない。ミラーを支持する方のミラー支持部のみが、弾性部材によって構成されている。つまり、弾性部材は、ミラーの背面（反射面とは反対側の面）のみに位置する。このため、視認者側から弾性部材が見えない。死角補助装置の外観性を高めることができる。 In the invention according to claim 7, the mirror support portion that supports the semi-transmissive mirror is not constituted by an elastic member. Only the mirror support portion that supports the mirror is formed of an elastic member. That is, the elastic member is located only on the back surface of the mirror (the surface opposite to the reflecting surface). For this reason, the elastic member cannot be seen from the viewer side. The appearance of the blind spot assisting device can be improved.
　請求項８に係る発明では、弾性部材はラバーによって構成されている。このため、弾性部材をバネ等の他の部材によって構成した場合に比べて、構成をシンプルにできる。 In the invention according to claim 8, the elastic member is made of rubber. For this reason, a structure can be simplified compared with the case where an elastic member is comprised by other members, such as a spring.
本発明による死角補助装置が搭載された車両の運転席付近の模式図である。It is a schematic diagram near the driver's seat of a vehicle equipped with a blind spot assisting device according to the present invention. 図１に示される死角補助装置の原理を説明する説明図である。It is explanatory drawing explaining the principle of the blind spot auxiliary | assistance apparatus shown by FIG. 図２に示される死角補助装置の一対のミラーとこの一対のミラーを収納するケースとを分解した斜視図である。It is the perspective view which decomposed | disassembled the pair of mirror of the blind spot auxiliary | assistance apparatus shown by FIG. 2, and the case which accommodates this pair of mirror. 図３に示される死角補助装置の上部の詳細図である。FIG. 4 is a detailed view of the upper part of the blind spot assisting device shown in FIG. 3. 図４に示される死角補助装置の上部の断面図である。It is sectional drawing of the upper part of the blind spot auxiliary | assistance apparatus shown by FIG. 図５に示される死角補助装置の上部の組立構成の断面図である。It is sectional drawing of the assembly structure of the upper part of the blind spot auxiliary | assistance apparatus shown by FIG. 図３に示される死角補助装置の要部を展開した模式的な展開図である。It is the typical expanded view which expand | deployed the principal part of the blind spot auxiliary | assistance apparatus shown by FIG.
　本発明の実施の形態を添付図に基づいて以下に説明する。本実施の形態では、車両のフロントピラーによって遮られる死角領域の像を、死角補助装置により映す例について説明する。但し、この死角補助装置は、車両のフロントピラーに採用した構成に限定されるものではない。 Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment, an example in which an image of a blind spot area that is blocked by the front pillar of the vehicle is projected by a blind spot assisting device will be described. However, the blind spot assisting device is not limited to the configuration adopted for the front pillar of the vehicle.
　実施例に係る死角補助装置について図面に基づき説明する。 The blind spot assisting device according to the embodiment will be described with reference to the drawings.
　図１に示されるように、自動車等の車両１０は、車体の前部に左右のフロントピラー１１，１１と、この左右のフロントピラー１１，１１間に設けられたウインドシールドガラス１２と、左右のフロントピラー１１，１１の後端に設けられた左右のサイドガラス１３，１３とを有する。ウインドシールドガラス１２の周縁部には、遮光性の黒セラミック１４（通称、黒セラ部１４）が印刷によって帯状に形成されている。ウインドシールドガラス１２の後方に位置している車室１５の前部には、ステアリングホイール１６と図示せぬ座席とが配置されている。以下、車両１０の一例として、右ハンドル車を例示するが、これに限定されない。 As shown in FIG. 1, a vehicle 10 such as an automobile includes left and right front pillars 11 and 11 at a front portion of a vehicle body, a windshield glass 12 provided between the left and right front pillars 11 and 11, and left and right front pillars 11 and 11. It has left and right side glasses 13 and 13 provided at the rear ends of the front pillars 11 and 11. On the periphery of the windshield glass 12, a light-shielding black ceramic 14 (commonly known as a black ceramic portion 14) is formed in a band shape by printing. A steering wheel 16 and a seat (not shown) are disposed in the front portion of the vehicle compartment 15 located behind the windshield glass 12. Hereinafter, as an example of the vehicle 10, a right-hand drive vehicle is illustrated, but the present invention is not limited thereto.
　車室１５にいる視認者Ｍｎ（主に運転者）は、ウインドシールドガラス１２（黒セラ部１４の部分を除く）と左右のサイドガラス１３，１３を透して車外の風景を直接に視認することができる。しかし、車両１０のなかの、左右のフロントピラー１１，１１と黒セラ部１４，１４が配置される領域では、前記視認者Ｍｎの視界が遮られて、外部の風景を直接に視認することができない。つまり、死角領域Ａｄ（図２参照）が生じる。左右のフロントピラー１１，１１と黒セラ部１４，１４は、障害物に該当する。 A viewer Mn (mainly a driver) in the passenger compartment 15 can directly see the scenery outside the vehicle through the windshield glass 12 (excluding the black ceramic portion 14) and the left and right side glasses 13 and 13. Can do. However, in the region of the vehicle 10 where the left and right front pillars 11 and 11 and the black sera portions 14 and 14 are arranged, the visual field of the viewer Mn is blocked and the external scenery can be directly viewed. Can not. That is, a blind spot area Ad (see FIG. 2) is generated. The left and right front pillars 11 and 11 and the black ceramic portions 14 and 14 correspond to obstacles.
　これに対し、図１及び図２に示されるように、本発明の車両１０は死角補助装置２０を備えている。この死角補助装置２０は、障害物１１（フロントピラー１１）により遮られて視認者Ｍｎから見えない死角領域Ａｄにある物体Ｏｊの像を映す。ここで、物体Ｏｊは、人間、動物、植物等の生物を含む。 On the other hand, as shown in FIGS. 1 and 2, the vehicle 10 of the present invention includes a blind spot assisting device 20. This blind spot assisting device 20 displays an image of the object Oj in the blind spot area Ad that is blocked by the obstacle 11 (front pillar 11) and cannot be seen by the viewer Mn. Here, the object Oj includes organisms such as humans, animals, and plants.
　死角補助装置２０は、視認者Ｍｎ側から見て右側（運転者側）のフロントピラー１１に配置され、このフロントピラー１１及び黒セラ部１４によって遮られる死角領域Ａｄの物体Ｏｊの像を映すものである。この死角補助装置２０は、視認者Ｍｎから見てフロントピラー１１及び黒セラ部１４と対向するように配置されている。以下、死角補助装置２０について詳しく説明する。 The blind spot assisting device 20 is disposed on the front pillar 11 on the right side (driver side) when viewed from the viewer Mn side, and projects an image of the object Oj in the blind spot area Ad blocked by the front pillar 11 and the black ceramic portion 14. It is. The blind spot assisting device 20 is disposed so as to face the front pillar 11 and the black ceramic portion 14 when viewed from the viewer Mn. Hereinafter, the blind spot assisting device 20 will be described in detail.
　前記死角補助装置２０は、半透過ミラー２１とミラー２２とを含む。以下、半透過ミラー２１とミラー２２の両方をまとめて、適宜「一対のミラー２１，２２」と言う。また、半透過ミラー２１とミラー２２とのいずれか一方のことを、適宜「一方のミラー」と言い、半透過ミラー２１とミラー２２とのいずれか他方のことを、適宜「他方のミラー」と言うことにする。 The blind spot assisting device 20 includes a semi-transmissive mirror 21 and a mirror 22. Hereinafter, both the semi-transmissive mirror 21 and the mirror 22 are collectively referred to as “a pair of mirrors 21 and 22” as appropriate. In addition, one of the semi-transmissive mirror 21 and the mirror 22 is appropriately referred to as “one mirror”, and the other of the semi-transmissive mirror 21 and the mirror 22 is appropriately referred to as “the other mirror”. I will say.
　半透過ミラー２１は、視認者Ｍｎ側に位置し、物体Ｏｊの像を表す光Ｌａを入射して一部を反射し残りを透過する、いわゆるマジックミラーである。この半透過ミラー２１は、例えば次のように形成される。第１例は、透光性の樹脂材料からなる基材の表面に、アルミニウムなどの金属を蒸着させることにより、所望の反射率を有した半透過反射層を形成してなる。第２例は、前記基材の表面に誘電体多層膜をコーティングすることにより、所望の反射率を有した半透過反射層を形成してなる。 The semi-transmission mirror 21 is a so-called magic mirror that is located on the viewer Mn side, is incident on the light La representing the image of the object Oj, partially reflects, and transmits the rest. For example, the semi-transmissive mirror 21 is formed as follows. In the first example, a transflective layer having a desired reflectance is formed by depositing a metal such as aluminum on the surface of a base material made of a translucent resin material. In the second example, the surface of the base material is coated with a dielectric multilayer film to form a transflective layer having a desired reflectance.
　ミラー２２は、半透過ミラー２１の反射面２１ａに間隔を有して対面し、前記反射された光を半透過ミラー２１へ向かって反射する。このミラー２２は、例えば上述の透光性樹脂材料からなる基材の表面に、アルミニウムなどの金属を蒸着させてなる、アルミニウム蒸着ミラーである。 The mirror 22 faces the reflective surface 21a of the semi-transmissive mirror 21 with a gap, and reflects the reflected light toward the semi-transmissive mirror 21. This mirror 22 is an aluminum vapor deposition mirror formed by vapor-depositing a metal such as aluminum on the surface of a base material made of the above-described translucent resin material, for example.
　半透過ミラー２１とミラー２２は、平板状などの板状に形成されている。上述のように、一対のミラー２１，２２は、反射面２１ａ，２２ａ同士が互いに対向し合うように位置している。図２に示されるように、車両１０を上から見て、半透過ミラー２１の一端面２１ｂとミラー２２の一端面２２ｂは、ウインドシールドガラス１２のガラス面に近接している。半透過ミラー２１のなかの、一端面２１ｂとは反対側の端２１ｃのことを、「他端面２１ｃ」と言う。 The semi-transmissive mirror 21 and the mirror 22 are formed in a plate shape such as a flat plate shape. As described above, the pair of mirrors 21 and 22 are positioned so that the reflecting surfaces 21a and 22a face each other. As shown in FIG. 2, one end surface 21 b of the semi-transmissive mirror 21 and one end surface 22 b of the mirror 22 are close to the glass surface of the windshield glass 12 when the vehicle 10 is viewed from above. The end 21c on the side opposite to the one end face 21b in the semi-transmissive mirror 21 is referred to as “the other end face 21c”.
　半透過ミラー２１は、ミラー２２に対し、このミラー２２の反射面２２ａに沿って位置ずれしている。つまり、半透過ミラー２１を面直方向Ｆａ（半透過ミラー２１の板面に向かう方向Ｆａ。板面に垂直な方向Ｆａ）から見て、半透過ミラー２１の一端面２１ｂは、ミラー２２の反射面２２ａからウインドシールドガラス１２のガラス面へ向かって位置ずれしている。言い換えると、半透過ミラー２１とミラー２２とは、水平方向へ段違い状に位置している。以下、この半透過ミラー２１のなかの、ミラー２２の反射面２２ａに向かい合う部分２１ｄのことを「対向部２１ｄ」と言い、ミラー２２の反射面２２ａに向かい合っていない部分２１ｅ、つまり半透過ミラー２１の一端面２１ｂ側の部分のことを「非対向部２１ｅ」と言う。 The transflective mirror 21 is displaced with respect to the mirror 22 along the reflection surface 22 a of the mirror 22. That is, when the transflective mirror 21 is viewed from the direction perpendicular to the plane Fa (direction Fa toward the plate surface of the semitransparent mirror 21; direction Fa perpendicular to the plate surface), the one end surface 21b of the semitransparent mirror 21 is reflected by the mirror 22. The position is shifted from the surface 22 a toward the glass surface of the windshield glass 12. In other words, the semi-transmissive mirror 21 and the mirror 22 are positioned in a stepped manner in the horizontal direction. Hereinafter, a portion 21d of the semi-transmissive mirror 21 that faces the reflecting surface 22a of the mirror 22 is referred to as an “opposing portion 21d”, and a portion 21e that does not face the reflecting surface 22a of the mirror 22, that is, the semi-transmissive mirror 21. The portion on the one end face 21b side is referred to as a “non-opposing portion 21e”.
　半透過ミラー２１の反射面２１ａは、ミラー２２の反射面２２ａに対して平行ではなく、所定の傾斜角θだけ傾いている。半透過ミラー２１の反射面２１ａの傾き方向は、半透過ミラー２１の一端面２１ｂから他端面２１ｃへ向かうにつれて、反射面２１ａ，２２ａ間の間隔が大きくなる方向である。言い換えると、前記傾き方向は、ミラー２２に対して半透過ミラー２１が視認者Ｍｎ側へ開く方向である。なお、半透過ミラー２１の反射面２１ａを、ミラー２２の反射面２２ａに対して平行としてもよい。 The reflection surface 21a of the semi-transmissive mirror 21 is not parallel to the reflection surface 22a of the mirror 22, but is inclined by a predetermined inclination angle θ. The inclination direction of the reflection surface 21a of the semi-transmission mirror 21 is a direction in which the interval between the reflection surfaces 21a and 22a increases as it goes from the one end surface 21b of the semi-transmission mirror 21 to the other end surface 21c. In other words, the tilt direction is a direction in which the semi-transmissive mirror 21 opens toward the viewer Mn with respect to the mirror 22. Note that the reflective surface 21 a of the semi-transmissive mirror 21 may be parallel to the reflective surface 22 a of the mirror 22.
　次に、図２を参照しつつ、死角補助装置２０の原理を説明する。なお、図２は、視認者Ｍｎが運転席に着座した状態を示しており、視点Ｐｉは視認者Ｍｎの視点（アイポイント）を示している。 Next, the principle of the blind spot assisting device 20 will be described with reference to FIG. FIG. 2 shows a state in which the viewer Mn is seated in the driver's seat, and the viewpoint Pi shows the viewpoint (eye point) of the viewer Mn.
　視認者Ｍｎ（視点Ｐｉ）の前方視界には、フロントピラー１１（図２では図示しないが、図１の黒セラ部１４も含む）によって遮られる死角領域Ａｄが生じる。従って、視点Ｐｉからは、死角領域Ａｄに存在する物体Ｏｊを直接に視認することはできない。 In the front view of the viewer Mn (viewpoint Pi), there is a blind spot area Ad that is blocked by the front pillar 11 (not shown in FIG. 2, but also including the black ceramic portion 14 in FIG. 1). Therefore, the object Oj existing in the blind spot area Ad cannot be directly viewed from the viewpoint Pi.
　一方、物体Ｏｊから一対のミラー２１，２２へ向かった光Ｌａ（像を表す光Ｌａ）は、半透過ミラー２１の反射面２１ａのなかの非対向部２１ｅへ入射する。このため、物体Ｏｊからの光Ｌａは、一対のミラー２１，２２の間で反射を繰り返しつつ、そのなかの一部が一対のミラー２１，２２から出射する（つまり、光Ｌａの一部が半透過ミラー２１を透過する）。一対のミラー２１，２２から出射する光Ｌａの一部は、視点Ｐｉに達する。従って、視点Ｐｉからは直接に視認できる風景と連続して、ミラー２２に映る物体Ｏｊの像を、半透過ミラー２１越しに視認することができる。 On the other hand, light La (light La representing an image) directed from the object Oj to the pair of mirrors 21 and 22 is incident on the non-facing portion 21e in the reflecting surface 21a of the semi-transmissive mirror 21. For this reason, the light La from the object Oj is repeatedly reflected between the pair of mirrors 21 and 22, and a part of the light is emitted from the pair of mirrors 21 and 22 (that is, a part of the light La is half). The light passes through the transmission mirror 21). A part of the light La emitted from the pair of mirrors 21 and 22 reaches the viewpoint Pi. Therefore, the image of the object Oj reflected on the mirror 22 can be seen through the semi-transmissive mirror 21 continuously with the scenery that can be seen directly from the viewpoint Pi.
　なお、死角領域Ａｄのうち、フロントピラー１１の背面側の僅かな領域（図２にハッチングによって表した部分）は、この領域からの光が一対のミラー２１，２２に入射できず、物体Ｏｊの像を一対のミラー２１，２２によって映すことができない、いわゆる視認不能な領域である。 Of the blind spot area Ad, a small area on the back side of the front pillar 11 (portion represented by hatching in FIG. 2) cannot allow light from this area to enter the pair of mirrors 21 and 22 and the object Oj. This is a so-called invisible region where an image cannot be projected by the pair of mirrors 21 and 22.
　ところで、上述のように、半透過ミラー２１の反射面２１ａは、ミラー２２の反射面２２ａに対して傾いている。傾き方向は、ミラー２２に対して半透過ミラー２１が視認者Ｍｎ側へ開く方向である。つまり、反射面２１ａ，２２ａ間の間隔は、この反射面２１ａ，２２ａ間で反射を繰り返しつつ進行する光Ｌａの進行方向に向かって徐々に大きくなる。 Incidentally, as described above, the reflection surface 21 a of the semi-transmissive mirror 21 is inclined with respect to the reflection surface 22 a of the mirror 22. The tilt direction is a direction in which the semi-transmissive mirror 21 opens toward the viewer Mn with respect to the mirror 22. That is, the interval between the reflecting surfaces 21a and 22a gradually increases in the traveling direction of the light La that travels while repeating reflection between the reflecting surfaces 21a and 22a.
　像を表す光Ｌａが、半透過ミラー２１の反射面２１ａのなかの非対向部２１ｅへ入射する入射角のことを、「最初の入射角」と言う。像を表す光Ｌａが、反射面２１ａ，２２ａ間で反射を繰り返した後に、一対のミラー２１，２２から視点Ｐｉへ向かって出射する出射角のことを、「最後の出射角」という。最後の出射角は、最初の入射角よりも大きい。このため、任意の傾斜角θを予め適宜設定しておくことにより、物体Ｏｊから半透過ミラー２１の反射面２１ａへ、最初の入射角で入射する光Ｌａ（光線Ｌａ）は、視点Ｐｉと物体Ｏｊとを結ぶ直線Ｌｐに交差する。従って、視認者Ｍｎが物体Ｏｊの像を視認する際に、ミラー２２に映る像と直接に視認する前方の風景との間にズレを生じることはない。 The incident angle at which the light La representing the image is incident on the non-facing portion 21e in the reflecting surface 21a of the semi-transmissive mirror 21 is referred to as "first incident angle". The emission angle at which the light La representing the image is emitted from the pair of mirrors 21 and 22 toward the viewpoint Pi after being repeatedly reflected between the reflection surfaces 21a and 22a is referred to as a “last emission angle”. The final exit angle is greater than the initial incident angle. For this reason, by arbitrarily setting an arbitrary inclination angle θ in advance, the light La (light ray La) incident on the reflecting surface 21a of the semi-transmissive mirror 21 from the object Oj at the first incident angle is represented by the viewpoint Pi and the object. It intersects with a straight line Lp connecting Oj. Therefore, when the viewer Mn visually recognizes the image of the object Oj, there is no deviation between the image reflected on the mirror 22 and the front scenery that is directly visually recognized.
　次に、死角補助装置２０の外装構造について説明する。なお、以下の説明では、理解を容易にするために便宜的に、半透過ミラー２１のことを「一方のミラー２１」、ミラー２２のことを「他方のミラー２２」と、適宜言い換えることにする。 Next, the exterior structure of the blind spot assisting device 20 will be described. In the following description, for ease of understanding, the transflective mirror 21 is referred to as “one mirror 21” and the mirror 22 as “other mirror 22” as appropriate for convenience. .
　図３に示されるように、一対のミラー２１，２２は、フロントピラー１１（図１参照）に沿って上下方向に細長い。死角補助装置２０は、半透過ミラー２１及びミラー２２を収納するケース２３を含む。このケース２３は、第１ケース半体３０と第２ケース半体４０とからなる、分割ケースである。第１及び第２ケース半体３０，４０同士は、一対のミラー２１，２２の板面方向に分割されている。第１ケース半体３０は、視認者Ｍｎ（図２参照）側に位置している。 As shown in FIG. 3, the pair of mirrors 21 and 22 are elongated in the vertical direction along the front pillar 11 (see FIG. 1). The blind spot assisting device 20 includes a case 23 that houses a semi-transmissive mirror 21 and a mirror 22. The case 23 is a divided case composed of a first case half 30 and a second case half 40. The first and second case halves 30 and 40 are divided in the plate surface direction of the pair of mirrors 21 and 22. The first case half 30 is located on the viewer Mn (see FIG. 2) side.
　図３～図６に示されるように、第１ケース半体３０は、一対のミラー２１，２２に合わせて上下に細長い略矩形状のボックスであり、第２ケース半体４０に対向する面を全面的に開放している（つまり、第１の開口３１を有する）。この第１ケース半体３０は、第１の開口３１の周縁を形成している周壁３２と、この周壁３２の前面を覆う前壁３３とからなる、樹脂の一体成型品である。 As shown in FIGS. 3 to 6, the first case half 30 is a substantially rectangular box that is elongated vertically according to the pair of mirrors 21 and 22, and has a surface facing the second case half 40. It is fully open (that is, it has the first opening 31). The first case half 30 is an integrally molded resin product including a peripheral wall 32 that forms the periphery of the first opening 31 and a front wall 33 that covers the front surface of the peripheral wall 32.
　この第１ケース半体３０の前半部（つまり、第１の開口３１とは反対側）は、長手方向の両端部（上端部と下端部）を残して形成されてなる、大きい第２の開口３４を有している。この第２の開口３４は、周壁３２と前壁３３とにわたって、大きく開口している。一対のミラー２１，２２から視認者Ｍｎ側へ出射された光Ｌａ（図２参照）は、この第２の開口３４を通って視認者Ｍｎに到達することが可能である。半透過ミラー２１は、第１ケース半体３０のなかの、第２の開口３４側に位置している。半透過ミラー２１の反射面２１ａは、第２の開口３４に対して反対側を向いている。 The first half of the first case half 30 (that is, the side opposite to the first opening 31) is a large second opening formed by leaving both ends (upper end and lower end) in the longitudinal direction. 34. The second opening 34 is greatly opened across the peripheral wall 32 and the front wall 33. The light La (see FIG. 2) emitted from the pair of mirrors 21 and 22 to the viewer Mn side can reach the viewer Mn through the second opening 34. The semi-transmissive mirror 21 is located on the second opening 34 side in the first case half 30. The reflecting surface 21 a of the semi-transmissive mirror 21 faces the opposite side with respect to the second opening 34.
　この第２の開口３４には、上下に延びたルーバー３５が設けられている。このルーバー３５は、第１ケース半体３０の幅方向に所定のピッチに配列された複数の縦板によって構成されている。図２及び図３に示されるように、このルーバー３５は、半透過ミラー２１よりも視認者Ｍｎ側に位置しており、視認者Ｍｎ側から所定の進入角で、一対のミラー２１，２２に入射する外光を遮る遮光部として機能する。 The second opening 34 is provided with a louver 35 extending vertically. The louver 35 is constituted by a plurality of vertical plates arranged at a predetermined pitch in the width direction of the first case half 30. As shown in FIGS. 2 and 3, the louver 35 is located on the viewer Mn side with respect to the semi-transmissive mirror 21, and is placed on the pair of mirrors 21 and 22 at a predetermined entry angle from the viewer Mn side. It functions as a light shielding unit that blocks incident external light.
　図３～図６に示されるように、第１ケース半体３０の第１の開口３１は、第２ケース半体４０によって取り外し可能に塞がれている。この第２ケース半体４０は、上下に細長い略平板状のリッドの構成である。この第２ケース半体４０の長手方向の両端部（上端部と下端部）は、複数の嵌合片４１，４１と複数の結合フランジ４２とを有する。複数の嵌合片４１，４１は、第２ケース半体４０の長手方向の両端部から第１ケース半体３０の第１の開口３１へ向かって延びて、この第１の開口３１に嵌め込み可能である。複数の結合フランジ４２は、それぞれ貫通した、複数のビス挿入孔４２ａと複数の位置決め用孔４２ｂとを有する。 3 to 6, the first opening 31 of the first case half 30 is detachably closed by the second case half 40. The second case half 40 has a substantially flat lid shape elongated vertically. Both ends (upper end and lower end) in the longitudinal direction of the second case half 40 have a plurality of fitting pieces 41 and 41 and a plurality of coupling flanges 42. The plurality of fitting pieces 41, 41 extend from both longitudinal ends of the second case half 40 toward the first opening 31 of the first case half 30 and can be fitted into the first opening 31. It is. Each of the plurality of coupling flanges 42 has a plurality of screw insertion holes 42a and a plurality of positioning holes 42b penetrating therethrough.
　第１ケース半体３０は、周壁３２の外面から膨出した複数の結合凸部３６を有する。この複数の結合凸部３６は、複数の雌ネジ３６ａと複数の位置決め用突起３６ｂとを有する。 The first case half 30 has a plurality of coupling protrusions 36 bulging from the outer surface of the peripheral wall 32. The plurality of coupling protrusions 36 have a plurality of female screws 36a and a plurality of positioning projections 36b.
　第１ケース半体３０に第２ケース半体４０を組み付ける手順は、次の通りである。先ず、複数の嵌合片４１，４１を第１の開口３１に嵌め込む。次に、第１ケース半体３０に第２ケース半体４０を重ね合わせ、複数の位置決め用孔４２ｂと複数の位置決め用突起３６ｂとを嵌合することによって双方の位置合わせをする。最後に、複数のビス挿入孔４２ａから挿入した複数のビス４３を、複数の雌ネジ３６ａにネジ込む。これでケース２３の組立作業を完了する。 The procedure for assembling the second case half 40 to the first case half 30 is as follows. First, the plurality of fitting pieces 41 and 41 are fitted into the first opening 31. Next, the second case half 40 is overlaid on the first case half 30 and the plurality of positioning holes 42b and the plurality of positioning projections 36b are fitted to align both. Finally, the plurality of screws 43 inserted from the plurality of screw insertion holes 42a are screwed into the plurality of female screws 36a. Thus, the assembly work of the case 23 is completed.
　第１ケース半体３０のなかの、一方のミラー２１の板面に対向する第１対向面３７（前壁３３の内面３７）は、複数の第１ミラー支持部３８と複数の第１嵌合孔３９とを有する。複数の第１ミラー支持部３８は、一方のミラー２１に部分的に接触して支持することが可能である。この複数の第１ミラー支持部３８の形状は、第１対向面３７から一方のミラー２１の板面に向かって突出した、球面状である。複数の第１嵌合孔３９は、複数の第１ミラー支持部３８の近傍に位置している。 The first facing surface 37 (the inner surface 37 of the front wall 33) facing the plate surface of one of the mirrors 21 in the first case half 30 is a plurality of first mirror support portions 38 and a plurality of first fittings. And a hole 39. The plurality of first mirror support portions 38 can be supported by partially contacting one of the mirrors 21. The plurality of first mirror support portions 38 have a spherical shape protruding from the first facing surface 37 toward the plate surface of the one mirror 21. The plurality of first fitting holes 39 are located in the vicinity of the plurality of first mirror support portions 38.
　第２ケース半体４０のなかの、他方のミラー２２の板面に対向する第２対向面４４は、複数の第２ミラー支持部４５と複数の第２嵌合孔４６とを有する。複数の第２ミラー支持部４５は、他方のミラー２２に部分的に接触して支持することが可能である。この複数の第２ミラー支持部４５の形状は、第２対向面４４から他方のミラー２２の板面に向かって突出した、球面状（図示せず）とすることができる。複数の第２嵌合孔４６は、複数の第２ミラー支持部４５の近傍に位置している。 The second facing surface 44 that faces the plate surface of the other mirror 22 in the second case half 40 has a plurality of second mirror support portions 45 and a plurality of second fitting holes 46. The plurality of second mirror support portions 45 can be supported by partially contacting the other mirror 22. The plurality of second mirror support portions 45 may have a spherical shape (not shown) protruding from the second facing surface 44 toward the plate surface of the other mirror 22. The plurality of second fitting holes 46 are located in the vicinity of the plurality of second mirror support portions 45.
　複数の第１ミラー支持部３８と複数の第２ミラー支持部４５との、少なくとも一方は、弾性部材によって構成されている。より好ましくは、複数の第１及び第２ミラー支持部３８，４５のなかの、半透過ミラー２１の反射面２１ａに対面したミラー２２を支持する複数の第２ミラー支持部４５のみが、弾性部材によって構成されている。この弾性部材は、好ましくはラバーによって構成されている。このラバーは、第２ケース半体４０の第２対向面４４に、例えば貼り付けによって取り付けられる。なお、複数の第２ミラー支持部４５が、ラバーによって構成された場合には、先端面を球面状ではなく、図５に示されるように平坦面としてもよい。 At least one of the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 is constituted by an elastic member. More preferably, only the plurality of second mirror support portions 45 that support the mirror 22 facing the reflecting surface 21a of the semi-transmissive mirror 21 among the plurality of first and second mirror support portions 38 and 45 are elastic members. It is constituted by. This elastic member is preferably made of rubber. The rubber is attached to the second facing surface 44 of the second case half 40 by, for example, pasting. When the plurality of second mirror support portions 45 are made of rubber, the tip surface may be a flat surface as shown in FIG. 5 instead of a spherical shape.
　図３に示されるように、複数の第１ミラー支持部３８及び複数の第２ミラー支持部４５は、好ましくは、それぞれ３個ずつである。複数の第１嵌合孔３９及び複数の第２嵌合孔４６も、好ましくは、それぞれ３個ずつである。 As shown in FIG. 3, the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 are preferably three each. The plurality of first fitting holes 39 and the plurality of second fitting holes 46 are also preferably three each.
　図３～図６に示されるように、一方のミラー２１と他方のミラー２２との間には、複数のスペーサー５０が介在している。この複数のスペーサー５０は、複数の第１嵌合部５１と複数の第２嵌合部５２と複数の第１接触部５３と複数の第２接触部５４とを有している。つまり、１個のスペーサー５０は、第１嵌合部５１と第２嵌合部５２と第１接触部５３と第２接触部５４とを、１個ずつ有する。 As shown in FIG. 3 to FIG. 6, a plurality of spacers 50 are interposed between one mirror 21 and the other mirror 22. The plurality of spacers 50 include a plurality of first fitting portions 51, a plurality of second fitting portions 52, a plurality of first contact portions 53, and a plurality of second contact portions 54. That is, one spacer 50 has the 1st fitting part 51, the 2nd fitting part 52, the 1st contact part 53, and the 2nd contact part 54 one each.
　複数の第１嵌合部５１は、複数のスペーサー５０から、一方のミラー２１の縁２１ｆに沿いつつ第１対向面３７へ向かって延びて、複数の第１嵌合孔３９に嵌合可能である。複数の第２嵌合部５２は、複数のスペーサー５０から、他方のミラー２２の縁２２ｃに沿いつつ第２対向面４４へ向かって延びて、複数の第２嵌合孔４６に嵌合可能である。複数の第１接触部５３は、複数のスペーサー５０のなかの、一方のミラー２１の反射面２１ａに対向する各一端面に、形成されている。この複数の第１接触部５３は、一方のミラー２１の板面（反射面２１ａ）に部分的に接触することが可能である。複数の第２接触部５４は、複数のスペーサー５０のなかの、他方のミラー２２の反射面２２ａに対向する各他端面に、形成されている。この複数の第２接触部５４は、他方のミラー２２の板面（反射面２２ａ）に部分的に接触することが可能である。 The plurality of first fitting portions 51 extend from the plurality of spacers 50 toward the first facing surface 37 along the edge 21f of the one mirror 21, and can be fitted into the plurality of first fitting holes 39. is there. The plurality of second fitting portions 52 extend from the plurality of spacers 50 toward the second facing surface 44 along the edge 22c of the other mirror 22, and can be fitted into the plurality of second fitting holes 46. is there. The plurality of first contact portions 53 are formed on each end surface of the plurality of spacers 50 facing the reflection surface 21 a of one mirror 21. The plurality of first contact portions 53 can partially contact the plate surface (reflection surface 21a) of one mirror 21. The plurality of second contact portions 54 are formed on each other end surface of the plurality of spacers 50 facing the reflection surface 22 a of the other mirror 22. The plurality of second contact portions 54 can partially contact the plate surface (reflection surface 22a) of the other mirror 22.
　複数の第１及び第２ミラー支持部３８，４５と複数の第１及び第２接触部５３，５４の、各位置は、一方のミラー２１の面直方向Ｆａ（一方のミラー２１の板面に向かう方向Ｆａ。板面に垂直な方向Ｆａ）から見て、それぞれ合致している（重なっている）。詳しく述べると、複数の第２ミラー支持部４５の位置は、一方のミラー２１の面直方向Ｆａから見て、複数の第１ミラー支持部３８の位置と合致している。複数の第１接触部５３の位置は、一方のミラー２１の面直方向Ｆａから見て、複数の第１ミラー支持部３８の位置と合致している。複数の第２接触部５４の位置は、一方のミラー２１の面直方向Ｆａから見て、複数の第２ミラー支持部４５の位置と合致している。 The positions of the plurality of first and second mirror support portions 38 and 45 and the plurality of first and second contact portions 53 and 54 are in the direction perpendicular to the plane Fa of one mirror 21 (on the plate surface of the one mirror 21). Direction Fa, which coincides (overlaps) as seen from direction Fa) perpendicular to the plate surface. More specifically, the positions of the plurality of second mirror support portions 45 coincide with the positions of the plurality of first mirror support portions 38 when viewed from the plane direction Fa of the one mirror 21. The positions of the plurality of first contact portions 53 coincide with the positions of the plurality of first mirror support portions 38 when viewed from the plane direction Fa of the one mirror 21. The positions of the plurality of second contact portions 54 coincide with the positions of the plurality of second mirror support portions 45 when viewed from the plane direction Fa of the one mirror 21.
　一方のミラー２１と他方のミラー２２との、互いの間隔及び角度は、複数のスペーサー５０の複数の第１及び第２接触部５３，５４によって、規定されている。 The distance and angle between the one mirror 21 and the other mirror 22 are defined by the plurality of first and second contact portions 53 and 54 of the plurality of spacers 50.
　複数の第１及び第２ミラー支持部３８，４５、複数のスペーサー５０、複数の第１及び第２接触部５３，５４は、それぞれ３個ずつである。３個のスペーサー５０は、半透過ミラー２１とミラー２２とが互いに重なり合っている部分の中の、できるだけ端で、しかも三角形位置に位置している。 The number of the first and second mirror support portions 38 and 45, the number of the spacers 50, and the number of the first and second contact portions 53 and 54 are three each. The three spacers 50 are located at the end of the semi-transparent mirror 21 and the mirror 22 as much as possible in the portion where the mirror 22 and the mirror 22 overlap each other, and at a triangular position.
　図７（ａ）は、死角補助装置２０の分解した状態を、展開して模式的に表している。図７（ｂ）は、死角補助装置２０の組立状態を、展開して模式的に表している。図７（ａ）に示されるように、第１対向面３７から複数の第１ミラー支持部３８の先端までの突出高さは、全て同一である。第２対向面４４から複数の第２ミラー支持部４５の先端までの突出高さは、全て同一である。複数のスペーサー５０の、第１接触部５３の先端から第２接触部５４の先端までの長さは、全て同一である。従って、図７（ｂ）に示されるように、死角補助装置２０の組立状態において、一対のミラー２１，２２の各板面に対する、複数の第１及び第２ミラー支持部３８，４５と複数の第１及び第２接触部５３，５４の、接触圧は実質的に均一である。 FIG. 7A schematically shows the disassembled state of the blind spot assisting device 20 in an exploded manner. FIG. 7B schematically shows the assembled state of the blind spot assisting device 20 in a developed state. As shown in FIG. 7A, the protruding heights from the first facing surface 37 to the tips of the plurality of first mirror support portions 38 are all the same. The protruding heights from the second facing surface 44 to the tips of the plurality of second mirror support portions 45 are all the same. The lengths of the plurality of spacers 50 from the tip of the first contact portion 53 to the tip of the second contact portion 54 are all the same. Therefore, as shown in FIG. 7B, in the assembled state of the blind spot assisting device 20, the plurality of first and second mirror support portions 38 and 45 and the plurality of mirrors on the respective plate surfaces of the pair of mirrors 21 and 22. The contact pressures of the first and second contact portions 53 and 54 are substantially uniform.
　以上の説明をまとめると、次の通りである。図７（ａ）、（ｂ）に示されるように、互いに向かい合う一対のミラー２１，２２間に介在した複数のスペーサー５０は、複数の第１接触部５３及び複数の第２接触部５４を有する。複数の第１及び第２接触部５３，５４は、各ミラー２１，２２の板面に対して部分的に接触をすることが可能である。つまり、一対のミラー２１，２２の各板面は、複数のスペーサー５０の全体に接触しているわけではない。 The above explanation is summarized as follows. As shown in FIGS. 7A and 7B, the plurality of spacers 50 interposed between the pair of mirrors 21 and 22 facing each other have a plurality of first contact portions 53 and a plurality of second contact portions 54. . The plurality of first and second contact portions 53 and 54 can partially contact the plate surfaces of the mirrors 21 and 22. That is, the plate surfaces of the pair of mirrors 21 and 22 are not in contact with the entirety of the plurality of spacers 50.
　複数のスペーサー５０に有している複数の第１及び第２接触部５３，５４の、先端の寸法公差を管理することは、第１及び第２ケース半体３０，４０の各寸法公差を管理する場合に比べて、容易である。このため、一対のミラー２１，２２の互いの間隔及び所定の角度を、複数の第１及び第２接触部５３，５４によって、容易に規定することができる。ケース２３の影響を受けることなく、一対のミラー２１，２２同士の間隔や所定の角度を精度よく確保することができる。この結果、死角領域にある像を、一対のミラー２１，２２に歪みなく映すことができる。図２に示される、死角領域Ａｄにある像を視認者Ｍｎが明確に視認する、いわゆる視認性を高めることができる。 Managing the dimensional tolerances at the tips of the plurality of first and second contact portions 53, 54 of the plurality of spacers 50 manages the dimensional tolerances of the first and second case halves 30, 40. Compared to the case, it is easier. Therefore, the distance between the pair of mirrors 21 and 22 and the predetermined angle can be easily defined by the plurality of first and second contact portions 53 and 54. Without being affected by the case 23, the distance between the pair of mirrors 21 and 22 and a predetermined angle can be accurately ensured. As a result, an image in the blind spot region can be projected on the pair of mirrors 21 and 22 without distortion. The so-called visibility in which the viewer Mn clearly sees the image in the blind spot area Ad shown in FIG. 2 can be improved.
　さらには、図７（ａ）、（ｂ）に示されるように、第１ケース半体３０のなかの、一方のミラー２１の板面に対向する第１対向面３７は、複数の第１ミラー支持部３８を有する。この複数の第１ミラー支持部３８は、一方のミラー２１に部分的に接触をすることが可能である。つまり、一方のミラー２１の板面は、第１対向面３７の全体に接触しているわけではない。複数の第１接触部５３と複数の第１ミラー支持部３８とによって、一方のミラー２１を支持することができる。 Further, as shown in FIGS. 7A and 7B, the first facing surface 37 facing the plate surface of one mirror 21 in the first case half 30 is a plurality of first mirrors. A support portion 38 is provided. The plurality of first mirror support portions 38 can partially contact one of the mirrors 21. That is, the plate surface of one mirror 21 does not contact the entire first facing surface 37. One mirror 21 can be supported by the plurality of first contact portions 53 and the plurality of first mirror support portions 38.
　また、第２ケース半体４０のなかの、他方のミラー２２の板面に対向する第２対向面４４は、複数の第２ミラー支持部４５を有する。この複数の第２ミラー支持部４５は、他方のミラー２２に部分的に接触をすることが可能である。つまり、他方のミラー２２の板面は、第２対向面４４の全体に接触しているわけではない。複数の第２接触部５４と複数の第２ミラー支持部４５とによって、他方のミラー２２を支持することができる。 The second facing surface 44 that faces the plate surface of the other mirror 22 in the second case half 40 has a plurality of second mirror support portions 45. The plurality of second mirror support portions 45 can partially contact the other mirror 22. That is, the plate surface of the other mirror 22 is not in contact with the entire second facing surface 44. The other mirror 22 can be supported by the plurality of second contact portions 54 and the plurality of second mirror support portions 45.
　このように、一対のミラー２１，２２を、ケース２３内の正確な位置に配置することができるとともに、一対のミラー２１，２２の平面度を高めて支持する、つまり１つの面の平らな度合い（均一性）を高めることができる。 As described above, the pair of mirrors 21 and 22 can be arranged at an accurate position in the case 23, and the flatness of the pair of mirrors 21 and 22 is increased and supported, that is, the flatness of one surface. (Uniformity) can be improved.
　さらには、図３～図６に示されるように、第１ケース半体３０の複数の第１嵌合孔３９は、複数の第１ミラー支持部３８の近傍に位置している。第２ケース半体４０の複数の第２嵌合孔４６は、複数の第２ミラー支持部４５の近傍に位置している。複数のスペーサー５０は、複数の第１嵌合孔３９に嵌合可能な複数の第１嵌合部５１と、複数の第２嵌合孔４６に嵌合可能な複数の第２嵌合部５２とを有する。このため、各嵌合孔３９，４６と各嵌合部５１，５２との嵌合構造だけによって、複数の第１及び第２ミラー支持部３８，４５に対する、複数の第１及び第２接触部５３，５４の位置決めを、正確に且つ容易に行うことができる。正確な位置決めができるので、一対のミラー２１，２２の角度を、より一層精度よく確保することができる。 Further, as shown in FIGS. 3 to 6, the plurality of first fitting holes 39 of the first case half 30 are located in the vicinity of the plurality of first mirror support portions 38. The plurality of second fitting holes 46 of the second case half 40 are located in the vicinity of the plurality of second mirror support portions 45. The plurality of spacers 50 include a plurality of first fitting portions 51 that can be fitted into the plurality of first fitting holes 39 and a plurality of second fitting portions 52 that can be fitted into the plurality of second fitting holes 46. And have. Therefore, a plurality of first and second contact portions for the plurality of first and second mirror support portions 38 and 45 only by the fitting structure of the fitting holes 39 and 46 and the fitting portions 51 and 52. Positioning 53 and 54 can be performed accurately and easily. Since accurate positioning can be performed, the angles of the pair of mirrors 21 and 22 can be ensured with higher accuracy.
　しかも、複数の第１嵌合部５１は、一方のミラー２１の縁２１ｆに沿っている。複数の第２嵌合部５２は、他方のミラー２２の縁２２ｃに沿っている。このため、一対のミラー２１，２２の板面に沿った方向の、ケース２３に対する一対のミラー２２の位置決めを、複数の第１及び第２嵌合部５１，５２によって容易に行うことができる。 Moreover, the plurality of first fitting portions 51 are along the edge 21 f of one mirror 21. The plurality of second fitting portions 52 are along the edge 22 c of the other mirror 22. For this reason, positioning of the pair of mirrors 22 with respect to the case 23 in the direction along the plate surfaces of the pair of mirrors 21 and 22 can be easily performed by the plurality of first and second fitting portions 51 and 52.
　さらには、図７（ａ）、（ｂ）に示されるように、複数の第１接触部５３の位置は、一方のミラー２１の面直方向Ｆａから見て、複数の第１ミラー支持部３８の位置と合致している。複数の第２接触部５４の位置は、一方のミラー２１の面直方向Ｆａから見て、複数の第２ミラー支持部４５の位置と合致している。複数の第１接触部５３の位置と複数の第２接触部５４の位置とは、一方のミラー２１の面直方向Ｆａから見て、互いに合致している（重なっている）。この結果、一方のミラー２１の面直方向Ｆａから見て、複数の第１及び第２ミラー支持部３８，４５と複数の第１及び第２接触部５３，５４の、各位置はそれぞれ合致している。例えば、それぞれ１つずつの、第１及び第２ミラー支持部３８，４５と第１及び第２接触部５３，５４は、一方のミラー２１の面直方向Ｆａへ一直線上に配列されている（重なっている）。このため、各ミラー２１，２２は、一方のミラー２１の面直方向Ｆａから見て互いに合致した位置にある（重なり合っている）、各ミラー支持部３８，４５と各接触部５３，５４とによって、支持される。 Furthermore, as shown in FIGS. 7A and 7B, the positions of the plurality of first contact portions 53 are the plurality of first mirror support portions 38 as viewed from the direction perpendicular to the face Fa of the one mirror 21. It matches the position of. The positions of the plurality of second contact portions 54 coincide with the positions of the plurality of second mirror support portions 45 when viewed from the plane direction Fa of the one mirror 21. The positions of the plurality of first contact portions 53 and the positions of the plurality of second contact portions 54 are in agreement (overlapping) with each other when viewed from the direction perpendicular to the face Fa of one mirror 21. As a result, the positions of the plurality of first and second mirror support portions 38 and 45 and the plurality of first and second contact portions 53 and 54 coincide with each other when viewed from the plane direction Fa of one mirror 21. ing. For example, one each of the first and second mirror support portions 38 and 45 and the first and second contact portions 53 and 54 are arranged in a straight line in the perpendicular direction Fa of one mirror 21 ( overlapping). For this reason, the mirrors 21 and 22 are in positions that coincide with each other when viewed from the plane direction Fa of the one mirror 21 (overlapping), by the mirror support portions 38 and 45 and the contact portions 53 and 54. Supported.
　例えば、第１ケース半体３０の複数の第１ミラー支持部３８から、一方のミラー２１の板面へ、力が作用した場合を考える。この力は、一方のミラー２１の面直方向Ｆａから見て互いに合致した位置にある各ミラー支持部３８，４５と各接触部５３，５４とを通って、第２ケース半体４０に、そのまま伝わる。このため、一対のミラー２１，２２には、過大な曲げ力の集中が発生しない。従って、作用した力によって一対のミラー２１，２２に発生する歪みを、より一層防止することができる。 For example, consider a case where a force is applied from the plurality of first mirror support portions 38 of the first case half 30 to the plate surface of one mirror 21. This force passes through the mirror support portions 38 and 45 and the contact portions 53 and 54 that are in a position coincident with each other when viewed from the plane direction Fa of the one mirror 21, and is directly applied to the second case half 40. It is transmitted. For this reason, excessive concentration of bending force does not occur in the pair of mirrors 21 and 22. Therefore, distortion generated in the pair of mirrors 21 and 22 due to the applied force can be further prevented.
　さらには、複数の第１及び第２接触部５３，５４と、複数の第１及び第２ミラー支持部３８，４５とは、それぞれ３個ずつである。 Furthermore, the plurality of first and second contact portions 53 and 54 and the plurality of first and second mirror support portions 38 and 45 are respectively three.
　各接触部５３，５４と各ミラー支持部３８，４５とが、それぞれ「２個」ずつの場合には、一対のミラー２１，２２の平面度を確保することは、容易ではない。また、各接触部５３，５４と各ミラー支持部３８，４５とが、それぞれ「４個」ずつの場合には、支持点が４箇所ずつになる。一対のミラー２１，２２の平面度を確保しつつ、これら一対のミラー２１，２２を４つの支持点で均一に支持するように、各寸法公差を管理することは、容易ではない。これに対し、本実施例では、各接触部５３，５４と各ミラー支持部３８，４５とが、それぞれ「３個」ずつである。３つの支持点により、一対のミラー２１，２２を比較的容易に均一に、且つ安定して支持することができる。 When the contact portions 53 and 54 and the mirror support portions 38 and 45 are “two” respectively, it is not easy to ensure the flatness of the pair of mirrors 21 and 22. Further, when there are “four” each of the contact portions 53 and 54 and the mirror support portions 38 and 45, there are four support points. It is not easy to manage each dimensional tolerance so that the pair of mirrors 21 and 22 is uniformly supported by four support points while ensuring the flatness of the pair of mirrors 21 and 22. On the other hand, in this embodiment, there are “three” each of the contact portions 53 and 54 and the mirror support portions 38 and 45, respectively. With the three support points, the pair of mirrors 21 and 22 can be supported relatively easily and uniformly and stably.
　さらには、複数の第１及び第２接触部５３，５４の形状は、突出した球面状である。このため、複数の第１及び第２接触部５３，５４を一対のミラー２１，２２の各板面に点接触させることができる。複数のスペーサー５０に有している複数の第１及び第２接触部５３，５４の先端を設計通りの寸法としやすい。 Furthermore, the shape of the plurality of first and second contact portions 53, 54 is a protruding spherical shape. For this reason, the plurality of first and second contact portions 53, 54 can be brought into point contact with the plate surfaces of the pair of mirrors 21, 22. The tips of the plurality of first and second contact portions 53 and 54 included in the plurality of spacers 50 can be easily set to dimensions as designed.
　さらには、複数の第１及び第２ミラー支持部３８，４５の形状は、突出した球面状とすることができる。このため、複数の第１及び第２ミラー支持部３８，４５を一対のミラー２１，２２の各板面に点接触させることができる。第１及び第２ケース半体３０，４０に有している複数の第１及び第２ミラー支持部３８，４５の先端を設計通りの寸法としやすい。 Furthermore, the shapes of the plurality of first and second mirror support portions 38 and 45 can be protruding spherical shapes. For this reason, the plurality of first and second mirror support portions 38 and 45 can be brought into point contact with the plate surfaces of the pair of mirrors 21 and 22. The front ends of the plurality of first and second mirror support portions 38 and 45 included in the first and second case halves 30 and 40 can be easily sized as designed.
　さらには、複数の第１ミラー支持部３８と複数の第２ミラー支持部４５との、少なくとも一方は、弾性部材によって構成されている。ケース２３に一対のミラー２１，２２とスペーサー５０とを組み付け時に、一対のミラー２１，２２の板厚方向の寸法公差がある。弾性部材は、組み付け時に、寸法誤差による各部材同士のガタツキを防止可能な程度の、弾性を有する。このため、弾性部材によってガタツキを容易に防止することができる。 Furthermore, at least one of the plurality of first mirror support portions 38 and the plurality of second mirror support portions 45 is constituted by an elastic member. When the pair of mirrors 21 and 22 and the spacer 50 are assembled to the case 23, there is a dimensional tolerance in the thickness direction of the pair of mirrors 21 and 22. The elastic member has sufficient elasticity to prevent backlash between the members due to dimensional errors during assembly. For this reason, rattling can be easily prevented by the elastic member.
　さらには、半透過ミラー２１を支持する方のミラー支持部３８は、弾性部材によって構成されない。ミラー２２を支持する方のミラー支持部４５のみが、弾性部材によって構成されている。つまり、弾性部材は、ミラー２２の背面（反射面２２ａとは反対側の面）のみに位置する。このため、視認者Ｍｎ側（図２参照）から弾性部材が見えない。死角補助装置２０の外観性を高めることができる。 Furthermore, the mirror support portion 38 that supports the semi-transmissive mirror 21 is not constituted by an elastic member. Only the mirror support portion 45 that supports the mirror 22 is formed of an elastic member. That is, the elastic member is located only on the back surface of the mirror 22 (the surface opposite to the reflecting surface 22a). For this reason, the elastic member cannot be seen from the viewer Mn side (see FIG. 2). The appearance of the blind spot assisting device 20 can be improved.
　さらには、弾性部材（第２ミラー支持部４５）はラバーによって構成されている。このため、弾性部材をバネ等の他の部材によって構成した場合に比べて、構成をシンプルにできる。 Furthermore, the elastic member (second mirror support portion 45) is made of rubber. For this reason, a structure can be simplified compared with the case where an elastic member is comprised by other members, such as a spring.
　なお、本発明による死角補助装置２０は、車両１０に備えた例に説明したが、その他の乗り物にも適用可能であり、これらの形式のものに限られるものではない。すなわち、本発明の作用及び効果を奏する限りにおいて、本発明は、実施例に限定されるものではない。 Although the blind spot assisting device 20 according to the present invention has been described as an example provided in the vehicle 10, it can be applied to other vehicles and is not limited to these types. That is, the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.
　本実施例の死角補助装置２０は、車両１０の運転席側から見て右側のフロントピラー１１に配置されるものであったが、左側のフロントピラー１１にも同様の死角補助装置が配置されてもよい。また、車両１０内の障害物として、フロントピラー１１の他にもセンターピラーやリアピラーなどに配置され、これらによって遮られる死角領域の像を映す死角補助装置であってもよい。 The blind spot assisting device 20 of the present embodiment is disposed on the right front pillar 11 when viewed from the driver's seat side of the vehicle 10, but a similar blind spot assisting device is also disposed on the left front pillar 11. Also good. In addition to the front pillar 11 as an obstacle in the vehicle 10, a blind spot assisting device that displays an image of a blind spot area that is disposed on a center pillar, a rear pillar, or the like and is blocked by these may be used.
　また、本発明は、車両１０以外の分野にも、障害物によって遮られる死角領域Ａｄの、物体Ｏｊの像を映す死角補助装置２０として広く適用することができる。例えば、本発明の死角補助装置２０を住宅に用いる場合、大面積の死角補助装置２０を天井に取り付けて入射部分のみを壁などから屋外に出すことで屋内に居ながら天井の死角補助装置２０によって空の様子を見ることができ、また、天井から屋内に太陽光を導くことができる。住宅密集地や通常の窓を付けられない事情のある住宅には特に好適である。 Also, the present invention can be widely applied to fields other than the vehicle 10 as the blind spot assisting device 20 that projects the image of the object Oj in the blind spot area Ad blocked by the obstacle. For example, when the blind spot assisting device 20 according to the present invention is used in a house, the blind spot assisting device 20 of the ceiling is attached to the ceiling and only the incident part is taken out of the wall etc. You can see the sky and direct sunlight from the ceiling indoors. It is particularly suitable for densely populated houses and houses with circumstances where ordinary windows cannot be attached.
　また、例えば観光施設等の高層建築物で、高層階の床下に大面積の死角補助装置２０を埋め込み、光入射部分のみを屋外に出すことで、床下の死角補助装置２０によって眼下の風景を直接足下に感じることが可能となり、建築物の高さを強調することができる。同様の効果を得るために、従来は床下に空間を設ける必要があったが、本発明の死角補助装置２０によれば既存の建築物にも容易に配置することができ好適である。 Also, for example, in a high-rise building such as a tourist facility, a blind spot assisting device 20 having a large area is embedded under the floor of a higher floor, and only the light incident portion is exposed to the outside. It is possible to feel under the feet and emphasize the height of the building. In order to obtain the same effect, conventionally, it was necessary to provide a space under the floor, but the blind spot assisting device 20 of the present invention is suitable because it can be easily arranged in an existing building.
　このほか、壁面に用いる例としては、道路に近接して塀が立っている、見通しの悪い交差点などにおいて、塀の角に本発明の死角補助装置２０を配置することで、死角領域Ａｄの歩行者や車両の存在をいち早く認識することができ、出会い頭の事故の防止に貢献することができる。 In addition, as an example used for the wall surface, the blind spot assisting device 20 of the present invention is arranged at the corner of the saddle at an intersection where the fence is standing close to the road and the line of sight is bad, thereby walking the blind spot area Ad. Can quickly recognize the presence of people and vehicles, and contribute to the prevention of accidents at the beginning of encounters.
　また、本発明の一対のミラー２１，２２は、互いに対向するように配置される板状の構成であればよく、平板状ミラーの他に、曲面状ミラーであってもよい。例えば、一対のミラー２１，２２は、車両１０を上から見て曲面状の構成とすることができる（特開２０１６－０９４１１７号参照）。詳しく述べると、半透過ミラー２１の反射面２１ａは凹んだ曲面形状である。ミラー２２の反射面２２ａは、半透過ミラー２１の反射面２１ａへ向かって凸となる曲面形状である。 Also, the pair of mirrors 21 and 22 of the present invention may be a plate-like configuration disposed so as to face each other, and may be a curved mirror in addition to the flat plate mirror. For example, the pair of mirrors 21 and 22 can have a curved configuration when the vehicle 10 is viewed from above (see Japanese Patent Application Laid-Open No. 2016-094117). More specifically, the reflecting surface 21a of the semi-transmissive mirror 21 has a concave curved shape. The reflection surface 22 a of the mirror 22 has a curved surface shape that is convex toward the reflection surface 21 a of the semi-transmissive mirror 21.
　本発明の死角補助装置２０は、車両１０の左右のフロントピラー１１，１１に採用するのに好適である。 The blind spot assisting device 20 of the present invention is suitable for use in the left and right front pillars 11 of the vehicle 10.
　１０　　車両
　１１　　障害物（フロントピラー）
　２０　　死角補助装置
　２１　　半透過ミラー（一方のミラー）
　２１ａ　反射面
　２１ｆ　一方のミラーの縁
　２２　　ミラー（他方のミラー）
　２２ａ　反射面
　２２ｃ　他方のミラーの縁
　２３　　ケース
　３０　　第１ケース半体
　３７　　第１対向面（一方のミラーの板面に対向する面）
　３８　　第１ミラー支持部
　３９　　第１嵌合孔
　４０　　第２ケース半体
　４４　　第２対向面（他方のミラーの板面に対向する面）
　４５　　第２ミラー支持部（弾性部材、ラバー）
　４６　　第２嵌合孔
　５０　　スペーサー
　５１　　第１嵌合部
　５２　　第２嵌合部
　５３　　第１接触部
　５４　　第２接触部
　Ａｄ　　死角領域
　Ｆａ　　一方のミラーの面直方向
　Ｌａ　　像を表す光
　Ｍｎ　　視認者
　Ｏｊ　　死角領域に存在する物体 10 Vehicle 11 Obstacle (front pillar)
20 Blind spot assist device 21 Transflective mirror (one mirror)
21a Reflecting surface 21f Edge of one mirror 22 Mirror (the other mirror)
22a Reflecting surface 22c Edge of the other mirror 23 Case 30 First case half 37 First facing surface (surface facing the plate surface of one mirror)
38 1st mirror support part 39 1st fitting hole 40 2nd case half body 44 2nd opposing surface (surface which opposes the plate surface of the other mirror)
45 Second mirror support (elastic member, rubber)
46 2nd fitting hole 50 Spacer 51 1st fitting part 52 2nd fitting part 53 1st contact part 54 2nd contact part Ad Blind spot area Fa The surface perpendicular direction La surface of one mirror Mn Viewer Oj Objects present in the blind spot area

Claims (8)

  1. 　障害物により遮られて視認者から見えない死角領域にある物体の像を映す死角補助装置であって、
    　前記視認者側に位置し、前記像を表す光を入射して一部を反射し残りを透過する板状の半透過ミラーと、
    　この半透過ミラーの反射面に間隔を有して対面し、前記反射された光を前記半透過ミラーへ向かって反射する板状のミラーと、
    　これらの半透過ミラー及びミラーを収納するケースとを含み、
    　このケースは、第１ケース半体と第２ケース半体とからなる、分割ケースであり、
    　前記半透過ミラーと前記ミラーとのいずれか一方のことを、一方のミラーと言い、
    　前記半透過ミラーと前記ミラーとのいずれか他方のことを、他方のミラーと言い、
    　前記第１ケース半体のなかの、前記一方のミラーの板面に対向する第１対向面は、前記一方のミラーに部分的に接触して支持することが可能な複数の第１ミラー支持部と、この複数の第１ミラー支持部の近傍に位置した複数の第１嵌合孔とを有し、
    　前記第２ケース半体のなかの、前記他方のミラーの板面に対向する第２対向面は、前記他方のミラーに部分的に接触して支持することが可能な複数の第２ミラー支持部と、この複数の第２ミラー支持部の近傍に位置した複数の第２嵌合孔とを有し、
    　前記一方のミラーと前記他方のミラーとの間には、複数のスペーサーが介在しており、
    　この複数のスペーサーは、
    　前記一方のミラーの縁に沿いつつ前記第１対向面へ向かって延びて、前記複数の第１嵌合孔に嵌合可能な複数の第１嵌合部と、
    　前記他方のミラーの縁に沿いつつ前記第２対向面へ向かって延びて、前記複数の第２嵌合孔に嵌合可能な複数の第２嵌合部と、
    　前記一方のミラーの板面に部分的に接触することが可能な複数の第１接触部と、
    　前記他方のミラーの板面に部分的に接触することが可能な複数の第２接触部とを有し、
    　前記一方のミラーと前記他方のミラーとの、互いの間隔及び角度は、前記複数のスペーサーの前記複数の第１及び第２接触部によって規定されていることを特徴とする死角補助装置。     A blind spot assisting device that displays an image of an object in a blind spot area that is blocked by an obstacle and cannot be seen by a viewer,
    A plate-shaped semi-transmissive mirror that is located on the viewer side, is incident on the light representing the image and reflects part of it and transmits the rest;
    A plate-like mirror that faces the reflective surface of the semi-transmissive mirror with a gap and reflects the reflected light toward the semi-transmissive mirror;
    Including a semi-transparent mirror and a case for storing the mirror,
    This case is a split case consisting of a first case half and a second case half,
    One of the semi-transmissive mirror and the mirror is referred to as one mirror,
    The other of the semi-transmissive mirror and the mirror is referred to as the other mirror,
    A plurality of first mirror support portions capable of supporting the first opposing surface of the first case half facing the plate surface of the one mirror partially in contact with the first mirror. And a plurality of first fitting holes located in the vicinity of the plurality of first mirror support portions,
    A plurality of second mirror support portions in the second case half that can be supported by a second facing surface that faces the plate surface of the other mirror in partial contact with the other mirror. And a plurality of second fitting holes located in the vicinity of the plurality of second mirror support portions,
    A plurality of spacers are interposed between the one mirror and the other mirror,
    This plurality of spacers
    A plurality of first fitting portions that extend toward the first facing surface along the edge of the one mirror and can be fitted into the plurality of first fitting holes,
    A plurality of second fitting portions that extend toward the second facing surface along the edge of the other mirror and can be fitted into the plurality of second fitting holes,
    A plurality of first contact portions capable of partially contacting the plate surface of the one mirror;
    A plurality of second contact portions capable of partially contacting the plate surface of the other mirror;
    The blind spot assisting device, wherein a distance and an angle between the one mirror and the other mirror are defined by the plurality of first and second contact portions of the plurality of spacers.
  2. 　前記複数の第１接触部の位置は、前記一方のミラーの面直方向から見て、前記複数の第１ミラー支持部の位置と合致しており、
    　前記複数の第２接触部の位置は、前記一方のミラーの面直方向から見て、前記複数の第２ミラー支持部の位置と合致しており、
    　前記複数の第１接触部の位置と前記複数の第２接触部の位置とは、前記一方のミラーの面直方向から見て、互いに合致していることを特徴とする請求項１記載の死角補助装置。     The positions of the plurality of first contact portions coincide with the positions of the plurality of first mirror support portions when viewed from the direction perpendicular to the surface of the one mirror,
    The positions of the plurality of second contact portions coincide with the positions of the plurality of second mirror support portions when viewed from the direction perpendicular to the surface of the one mirror,
    2. The blind spot according to claim 1, wherein positions of the plurality of first contact portions and positions of the plurality of second contact portions coincide with each other when viewed from a direction perpendicular to the surface of the one mirror. Auxiliary device.
  3. 　前記複数の第１及び第２ミラー支持部と、前記複数の第１及び第２接触部とは、それぞれ３個ずつであることを特徴とする請求項１又は請求項２記載の死角補助装置。 3. The blind spot assisting device according to claim 1, wherein the plurality of first and second mirror support portions and the plurality of first and second contact portions are three each.
  4. 　前記複数の第１及び第２接触部の形状は、突出した球面状であることを特徴とする請求項１～３のいずれか１項記載の死角補助装置。 The blind spot assisting device according to any one of claims 1 to 3, wherein the plurality of first and second contact portions have a protruding spherical shape.
  5. 　前記複数の第１及び第２ミラー支持部の形状は、突出した球面状であることを特徴とする請求項１～４のいずれか１項記載の死角補助装置。 The blind spot assisting device according to any one of claims 1 to 4, wherein the plurality of first and second mirror support portions have protruding spherical shapes.
  6. 　前記複数の第１ミラー支持部と前記複数の第２ミラー支持部との、少なくとも一方は、弾性部材によって構成されていることを特徴とする請求項１～５のいずれか１項記載の死角補助装置。 The blind spot assist according to any one of claims 1 to 5, wherein at least one of the plurality of first mirror support portions and the plurality of second mirror support portions is formed of an elastic member. apparatus.
  7. 　前記複数の第１ミラー支持部と前記複数の第２ミラー支持部のうち、
    　前記半透過ミラーを支持する方のミラー支持部は、前記弾性部材によって構成されることなく、
    　前記ミラーを支持する方のミラー支持部のみが、前記弾性部材によって構成されていることを特徴とする請求項６記載の死角補助装置。     Among the plurality of first mirror support portions and the plurality of second mirror support portions,
    The mirror support portion that supports the transflective mirror is not constituted by the elastic member,
    The blind spot assisting device according to claim 6, wherein only the mirror support portion that supports the mirror is constituted by the elastic member.
  8. 　前記弾性部材は、ラバーによって構成されていることを特徴とする請求項６又は請求項７記載の死角補助装置。 The blind spot assisting device according to claim 6 or 7, wherein the elastic member is made of rubber.
PCT/JP2017/025192 2016-07-25 2017-07-11 Blind spot assistant device WO2018021004A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134950U (en) * 1975-04-22 1976-10-30
JP2001516826A (en) * 1997-09-15 2001-10-02 アンダーセン・コーポレーション Integrated heat-insulating glass unit and method of manufacturing the same
JP2016101814A (en) * 2014-11-27 2016-06-02 日本精機株式会社 Dead angle region assistant device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51134950U (en) * 1975-04-22 1976-10-30
JP2001516826A (en) * 1997-09-15 2001-10-02 アンダーセン・コーポレーション Integrated heat-insulating glass unit and method of manufacturing the same
JP2016101814A (en) * 2014-11-27 2016-06-02 日本精機株式会社 Dead angle region assistant device

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