JP2018083527A - Dead angle adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently secure a visual field range for viewing a vehicle-outside landscape through a dead angle auxiliary device.SOLUTION: A vehicle 10 mounted with a dead angle auxiliary device 50 includes a window shield 24, and a band-shaped block layer 41 arranged at an entire peripheral edge of the window shield 24. The window shield 24 and the block layer 41 are curved so as to be recessed to a vehicle front side. The dead angle auxiliary device 50 includes a vertical plate-shaped semi-transmissive mirror 51 and a vertical plate-shaped mirror 52 which oppose each other. The semi-transmissive mirror 51 is located at an occupant Mn side rather than the mirror 52. When it is assumed that one end face 51b of the semi-transmissive mirror 51 and one end face 52b of the mirror 52 approximate a face 24a of the window shield 24 at a cabin side and a side edge 41a of the block layer 41, they exhibit contours approximate to a curved shape of the block layer 41.SELECTED DRAWING: Figure 5

Description

  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.

  For example, a driver (viewer) riding in a vehicle such as an automobile cannot see the scenery outside the left and right front pillars of the vehicle body because the front pillars 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.

  The conventional 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. Further, the blind spot assisting device includes a louver that blocks outside light incident on the semi-transmissive mirror from the transmission surface side of the semi-transmissive mirror.

  Some vehicles have a windshield curved so as to be convex toward the front of the vehicle. An example in which the blind spot assisting device is mounted on such a vehicle will be further described with reference to FIGS. 10 and 11. FIG. 10 shows a configuration in which a front portion of a vehicle equipped with a conventional blind spot assisting device is viewed from the side. Fig.11 (a) has shown the cross section along the 11a-11a arrow line of FIG. FIG.11 (b) has shown the cross section along the 11b-11b arrow line of FIG.

  As shown in FIGS. 10 and 11A, the vehicle 100 includes a windshield 101 and a shielding layer 102. The windshield 101 is provided between the left and right front pillars 103 and is curved so as to protrude forward of the vehicle. The shielding layer 102 is a belt-like member that is provided on the entire periphery of the windshield 101 and blocks light transmission, and is curved so as to protrude forward of the vehicle in accordance with the shape of the windshield 101.

  A conventional blind spot assisting device 110 is mounted near the inner side surface of the right front pillar 103 in the vehicle width direction. The blind spot assisting device 110 includes a vertical plate-shaped semi-transmissive mirror 111 and a vertical plate-shaped mirror 112 facing the reflective surface 111a of the semi-transmissive mirror 111 with an interval. The semi-transmissive mirror 111 is located closer to the occupant 120 (viewer 120 side) than the mirror 112, and receives light representing the image of the object, reflects a part thereof, and transmits the rest. The mirror 112 faces the reflecting surface 111 a of the semi-transmissive mirror 111 with a gap, and reflects incident light toward the semi-transmissive mirror 111. One end surfaces 111 b and 112 b (end surfaces 111 b and 112 b on the light incident side) of the semi-transmissive mirror 111 and the mirror 112 are inclined and close to each other along the vehicle interior side surface 101 a of the windshield 101.

  At the upper end portion and the lower end portion of the pair of mirrors 111 and 112, the respective one end surfaces 111b and 112b are located near the side edge 102a of the shielding layer 102. That is, the shielding layer 102 is positioned substantially on the back side of the mirror 112. From the viewpoint 121 of the occupant 120 seated in the driver's seat, the shielding layer 102 cannot be seen through the reflecting surfaces 111a and 112a of the pair of mirrors 111 and 112.

  However, as shown in FIG. 10 and FIG. 11B, the windshield 101 and the shielding layer 102 are curved so as to protrude forward in the vehicle at the center in the vertical direction of the pair of mirrors 111 and 112. . On the other hand, each end surface 111b, 112b of the pair of mirrors 111, 112 has a substantially linear shape inclined forward and downward from the upper end. That is, in the central part, the windshield 101 and the shielding layer 102 are displaced forward of the vehicle with respect to the respective one end surfaces 111b and 112b of the pair of mirrors 111 and 112. As a result, a part of the shielding layer 102 is reflected on the reflecting surfaces 111a and 112a of the pair of mirrors 111 and 112. From the viewpoint 121 of the occupant 120 seated in the driver's seat, a part of the shielding layer 102 can be seen through the reflecting surfaces 111a and 112a of the pair of mirrors 111 and 112. Accordingly, at the center in the vertical direction of the pair of mirrors 111 and 112, the range of viewing the scenery outside the vehicle through the blind spot assisting device 110, that is, the field of view that should be originally visible, becomes narrow.

  On the other hand, it is conceivable to bring the pair of mirrors 111 and 112 as close as possible to the surface 101a of the windshield 101 on the passenger compartment side. As a result, the shielding layer 102 cannot be seen from the viewpoint 121 of the occupant 120 at the center in the vertical direction of the pair of mirrors 111 and 112. However, at the upper end portion and the lower end portion of the pair of mirrors 111 and 112, the one end surfaces 111b and 112b are positioned in front of the shielding layer 102 by the amount of displacement of the pair of mirrors 111 and 112 forward of the vehicle. . Originally, from the viewpoint 121 of the occupant 120, although the shielding layer 102 cannot be seen through the reflecting surfaces 111a and 112a of the pair of mirrors 111 and 112, the respective end surfaces 111b and 112b are positioned in front of the shielding layer 102. Therefore, the range in which the scenery outside the vehicle can be seen through the blind spot assisting device 110, that is, the visual field range that should be seen, becomes narrow.

JP2015-120477A

  It is an object of the present invention to provide a technique capable of sufficiently ensuring a visual field range for viewing a scenery outside a vehicle through a blind spot assisting device.

  According to the first aspect of the present invention, the windshield is provided between the left and right front pillars and is curved so as to be convex toward the front of the vehicle, and provided on the entire periphery of the windshield, and the shape of the windshield Can be mounted inside a vehicle that has a belt-like shielding layer that is curved so as to protrude toward the front of the vehicle and blocks light transmission, and is blocked by one of the left and right front pillars. This is a blind spot assisting device capable of projecting an image of an object outside the vehicle in a blind spot area that cannot be seen.

  The blind spot assisting device is a vertical plate-shaped semi-transmissive mirror that receives the light representing the image and reflects a part thereof and transmits the rest, and the reflective surface of the semi-transmissive mirror is opposed to each other with an interval therebetween, and And a vertical plate-like mirror that reflects the reflected light toward the semi-transmissive mirror. When the blind spot assisting device is mounted on the vehicle, the semi-transmissive mirror is positioned closer to the passenger than the mirror.

  When it is assumed that the one end surface of the semi-transmissive mirror and the one end surface of the mirror are close to the vehicle-facing surface of the windshield and the side edge of the shielding layer, the shielding layer has a curved shape. It is characterized by an approximate contour.

  As described in claim 2, it preferably further includes a louver that blocks external light incident on the semi-transmission mirror from the transmission surface side of the semi-transmission mirror. The louver is located on the transmission surface of the semi-transmissive mirror. The contour of the louver approximates the contours of the semi-transmissive mirror and the mirror.

  In the invention according to claim 1, the blind spot that can be mounted inside the vehicle, wherein the windshield and the belt-like shielding layer provided on the entire periphery of the windshield are curved so as to protrude forward of the vehicle. An auxiliary device is assumed. In this blind spot assisting device, the contour of each end face (end face on the incident light side) of the pair of mirrors approximates the curved shape of the shielding layer curved so as to be convex forward of the vehicle. For this reason, the space | interval with a shielding layer can be made substantially constant over the whole each end surface of a pair of mirror. Therefore, in a state where the blind spot assisting device is mounted inside the vehicle, the range in which the scenery outside the vehicle can be seen through the blind spot assisting device from the viewpoint of the occupant at any part of the pair of mirrors in the vertical direction (view range). ) Can be secured sufficiently.

  In the invention according to claim 2, the contour of the louver that blocks external light approximates the contour of the pair of mirrors. For this reason, the contour line formed by the louver substantially matches the curved contour line formed by the pair of mirrors. Accordingly, it is possible to reduce the troublesomeness in the sight of the occupant.

It is the perspective view which looked at the vehicle carrying the blind spot auxiliary device by this invention from the front. FIG. 2 is a schematic view of the vicinity of a driver's seat of a vehicle on which the blind spot assisting device shown in FIG. 1 is mounted. It is a typical top view explaining the principle of the blind spot auxiliary | assistance apparatus shown by FIG. It is the typical side view which looked at the front part of the vehicle carrying the blind spot auxiliary | assistance apparatus shown by FIG. 2 from the vehicle width center side. It is explanatory drawing which looked at the relationship between the vehicle shown by FIG. 4, and a blind spot auxiliary | assistance apparatus from the top. FIG. 4 is an enlarged view of a pair of mirrors and louvers shown in FIG. 3. It is the typical side view seen from the vehicle width center side of the front part of the vehicle carrying the blind spot auxiliary | assistance apparatus shown by FIG. FIG. 8 is an exploded view of a pair of mirrors and louvers shown in FIG. 7. It is explanatory drawing of the relationship between a pair of mirror shown by FIG. 6, and louvers. It is the typical side view which looked at the front part of the vehicle carrying the conventional blind spot auxiliary device from the vehicle width center side. It is explanatory drawing which looked at the relationship between the vehicle shown by FIG. 10, and a blind spot auxiliary | assistance apparatus from the top.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  A blind spot assisting device according to an embodiment and a vehicle equipped with the blind spot assisting device will be described. In the description, left and right refer to the left and right based on the vehicle occupant, and front and rear refer to the front and rear based on the forward direction of the vehicle. In the figure, Fr is the front, Rr is the rear, Le is the left when viewed from the occupant, Ri is the right when viewed from the occupant, and CL is the center in the vehicle width direction.

  As shown in FIGS. 1 and 2, the vehicle 10 is an automobile such as a passenger car. The front portion of the vehicle body 11 of the vehicle 10 includes standing left and right front pillars 21 and 21, a roof 22 extending rearward from the upper ends of the left and right front pillars 21 and 21, and the lower half of the left and right front pillars 21 and 21. Left and right front fenders 23 extending forward from the front and covering the front part of the vehicle body 11.

  A windshield 24 is provided between the left and right front pillars 21 and 21. A cowl top panel 25 extending in the vehicle width direction along the lower edge of the windshield 24 is positioned in front of the windshield 24. In front of the cowl top panel 25, a front hood 26 that can be opened and closed is positioned.

  Door openings 31 and 31 on the side surface of the vehicle body 11 are opened and closed by left and right side doors 32 and 32. The left and right side doors 32, 32 have left and right side glasses 33, 33 at the top. The left and right side glasses 33, 33 are adjacent to the rear ends of the left and right front pillars 21, 21.

  A steering wheel 35 and a seat (not shown) are arranged in the front part of the passenger compartment 34 (see FIG. 2) located behind the windshield 24. Hereinafter, as an example of the vehicle 10, a right-hand drive vehicle is illustrated, but the present invention is not limited thereto.

  The windshield 24 is constituted by a plate-like transparent base made of glass or resin. Here, the windshield 24 assembled in the vehicle body 11 is defined as follows. The inner surface 24a (back surface 24a) of the windshield 24 is appropriately rephrased as “the surface 24a on the vehicle compartment 34 side”.

  A strip-shaped shielding layer 41 that blocks light transmission is provided on the entire periphery of the windshield 24. The shielding layer 41 is made of, for example, a well-known black ceramic layer formed in a strip shape having a predetermined width by printing on the entire edge of the back surface 24a of the windshield 24. This black ceramic layer is formed integrally with the windshield 24 by applying a black ceramic paste containing a black pigment to the back surface 24a of the windshield 24, and is commonly referred to as a black ceramic portion.

  An adhesive layer and a dam seal (not shown) interposed between the back surface 24 a of the windshield 24 and the vehicle body 11 are protected from ultraviolet rays by the shielding layer 41. As a result, deterioration with time of the adhesive layer and the dam seal can be suppressed. In addition, the adhesive layer and the dam seal can be blinded by the shielding layer 41 from the front of the vehicle 10.

  As shown in FIGS. 2 and 3, the viewer Mn in the passenger compartment 34 directly views the scenery outside the vehicle through the windshield 24 (excluding the portion of the shielding layer 41) and the left and right side glasses 33, 33. It can be visually recognized. Here, the viewer Mn is an occupant Mn (mainly a driver Mn).

  However, in the region of the vehicle 10 where the left and right front pillars 21 and 21 and the shielding layer 41 are disposed, the visual field of the viewer Mn is blocked and the external scenery cannot be directly viewed. That is, a blind spot area Ad is generated. The left and right front pillars 21 and 21 and the shielding layer 41 correspond to obstacles.

  On the other hand, the blind spot assisting device 50 of the present invention can be mounted inside the vehicle 10, for example, in the passenger compartment 34. That is, the vehicle 10 is a vehicle equipped with a blind spot assisting device 50 that is equipped with a blind spot assisting device 50. The blind spot assisting device 50 projects an image of the object Oj in the blind spot area Ad that is blocked by one of the left and right front pillars 21 and 21 and is not visible to the viewer Mn (occupant Mn). Here, the object Oj includes organisms such as humans, animals, and plants.

  As described above, the blind spot assisting device 50 is disposed on the right (driver's side) front pillar 21 and projects an image of the object Oj in the blind spot area Ad blocked by the front pillar 21 and the shielding layer 41. The blind spot assisting device 50 is disposed so as to face the front pillar 21 and the shielding layer 41 when viewed from the viewer Mn. Hereinafter, the blind spot assisting device 50 will be described in detail.

  As shown in FIG. 3, the blind spot assisting device 50 includes a semi-transmissive mirror 51 and a mirror 52. Hereinafter, both the semi-transmissive mirror 51 and the mirror 52 are collectively referred to as “a pair of mirrors 51 and 52” as appropriate.

  The semi-transmissive mirror 51 is a so-called magic mirror that is located on the viewer Mn side, and receives a light La that represents an image of the object Oj, reflects a part thereof, and transmits the rest. When the blind spot assisting device 50 is mounted on the vehicle 10, the semi-transmissive mirror 51 is located closer to the occupant Mn than the mirror 52. The semi-transmissive mirror 51 is formed as follows, for example. 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.

  The mirror 52 faces the reflective surface 51 a of the semi-transmissive mirror 51 with an interval, and reflects the reflected light toward the semi-transmissive mirror 51. This mirror 52 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 51 and the mirror 52 are formed in a vertical plate shape such as a flat plate shape. As described above, the pair of mirrors 51 and 52 are positioned such that the reflecting surfaces 51a and 52a face each other, and the reflecting surfaces 51a and 52a substantially face the vehicle width direction. That is, the pair of mirrors 51 and 52 are aligned in a vertical plate shape when mounted on the vehicle 10. When the vehicle 10 is viewed from above, the one end surface 51b of the semi-transmissive mirror 51 and the one end surface 52b of the mirror 52 are close to the back surface 24a of the windshield 24 (the surface 24a on the vehicle compartment 34 side). The end 51c on the side opposite to the one end face 51b in the semi-transmissive mirror 51 is referred to as “the other end face 51c”. The end 52c of the mirror 52 opposite to the one end face 52b is referred to as the “other end face 52c”.

  The transflective mirror 51 is displaced with respect to the mirror 52 along the reflecting surface 52 a of the mirror 52. That is, when the transflective mirror 51 is viewed from the plane direction Fa, the one end surface 51 b of the transflective mirror 51 is displaced from the reflective surface 52 a of the mirror 52 toward the back surface 24 a of the windshield 24. The perpendicular direction Fa is a direction Fa toward the plate surface of the semi-transmissive mirror 51 (direction Fa perpendicular to the plate surface). In other words, the semi-transmissive mirror 51 and the mirror 52 are positioned in a stepped manner in the horizontal direction.

  Hereinafter, a portion 51d of the semi-transmissive mirror 51 facing the reflecting surface 52a of the mirror 52 is referred to as an “opposing portion 51d”, and a portion 51e not facing the reflecting surface 52a of the mirror 52, that is, the semi-transmissive mirror 51. The part on the one end face 51b side is referred to as a “non-opposing part 51e”.

  The opening 53 between the one end surface 51 b of the semi-transmissive mirror 51 and the one end surface 52 b of the mirror 52 is referred to as a “light receiving portion 53”. The light receiving portion 53 can introduce light outside the vehicle through the windshield 24 to the pair of mirrors 51 and 52, that is, can receive light. The light receiving portion 53 is adjacent to the side surface 21 a on the inner side in the vehicle width direction in one of the front pillars 21.

  As described above, when the vehicle 10 is viewed from above, the pair of mirrors 51 and 52 are substantially in the shape of a vertical plate. Compared with this, the one end surface 51b of the semi-transmissive mirror 51 and the one end surface 52b of the mirror 52 are The interval between is small. For this reason, the light receiving portion 53 is elongated in the vertical direction.

  The reflection surface 51a of the semi-transmissive mirror 51 is not parallel to the reflection surface 52a of the mirror 52, but is inclined by a predetermined inclination angle θ. The inclination direction of the reflection surface 51a of the semi-transmission mirror 51 is a direction in which the interval between the reflection surfaces 51a and 52a increases as it goes from the one end surface 51b of the semi-transmission mirror 51 to the other end surface 51c. In other words, the tilt direction is a direction in which the semi-transmissive mirror 51 opens toward the viewer Mn with respect to the mirror 52. The reflective surface 51a of the semi-transmissive mirror 51 may be parallel to the reflective surface 52a of the mirror 52.

  Next, the principle of the blind spot assisting device 50 will be described with reference to FIG. FIG. 3 shows a state in which the viewer Mn is seated in the driver's seat, and the viewpoint Pi indicates the viewpoint (eye point, reference viewpoint position) of the viewer Mn.

  In the front field of view of the viewer Mn (viewpoint Pi), a blind spot area Ad that is blocked by the front pillar 21 (including the shielding layer 41) is generated. Therefore, the object Oj existing in the blind spot area Ad cannot be directly viewed from the viewpoint Pi.

  On the other hand, the light La (light La representing the image) directed from the object Oj to the pair of mirrors 51 and 52 is incident on the non-facing portion 51e in the reflecting surface 51a of the semi-transmissive mirror 51. For this reason, the light La from the object Oj is repeatedly reflected between the pair of mirrors 51 and 52, and a part of the light is emitted from the pair of mirrors 51 and 52 (that is, a part of the light La is half). The light passes through the transmission mirror 51). Part of the light La emitted from the pair of mirrors 51 and 52 reaches the viewpoint Pi. Therefore, the image of the object Oj reflected on the mirror 52 can be viewed through the semi-transmissive mirror 51 continuously with the scenery that can be directly viewed from the viewpoint Pi.

  Of the blind spot area Ad, a small area on the back side of the front pillar 21 (the portion represented by hatching in FIG. 3) cannot be incident on the pair of mirrors 51 and 52, and the object Oj This is a so-called invisible region in which an image cannot be projected by the pair of mirrors 51 and 52.

  Incidentally, as described above, the reflective surface 51 a of the semi-transmissive mirror 51 is inclined with respect to the reflective surface 52 a of the mirror 52. The tilt direction is a direction in which the semi-transmissive mirror 51 opens toward the viewer Mn with respect to the mirror 52. That is, the interval between the reflecting surfaces 51a and 52a gradually increases in the traveling direction of the light La that travels while repeating reflection between the reflecting surfaces 51a and 52a.

  The incident angle at which the light La representing the image is incident on the non-opposing portion 51e in the reflecting surface 51a of the semi-transmissive mirror 51 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 51 and 52 toward the viewpoint Pi after being repeatedly reflected between the reflection surfaces 51a and 52a is referred to as a “last emission angle”. The final exit angle is greater than the initial incident angle. Therefore, by appropriately setting an arbitrary inclination angle θ in advance, the light La (light ray La) incident at the first incident angle from the object Oj to the reflecting surface 51a of the semi-transmissive mirror 51 is 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 52 and the front scenery directly visible.

  Next, the relationship between the windshield 24 and the shielding layer 41 and the blind spot assisting device 50 will be further described with reference to FIGS. 4 and 5. FIG. 4 shows a configuration in which the front portion of the vehicle 10 on which the blind spot assisting device 50 is mounted is viewed from the vehicle width center side. Fig.5 (a) has shown the cross section along the 5a-5a arrow line of FIG. FIG. 5B shows an enlarged view around the side edge 41a of the shielding layer 41 in FIG. FIG.5 (c) has shown the cross section along the 5c-5c arrow line of FIG.

  As shown in FIGS. 4, 5 (a), and 5 (b), the windshield 24 is curved so as to protrude forward of the vehicle. The strip-shaped shielding layer 41 is curved so as to protrude forward of the vehicle in accordance with the shape of the windshield 24.

  One end surface 51b (incident light side end surface 51b) of the semi-transmissive mirror 51 and one end surface 52b (incident light side end surface 52b) of the mirror 52 are the vehicle interior side surface 24a of the windshield 24 and the shielding layer 41 side. When it is assumed that the edge 41a is close to the edge 41a, the contour approximates the curved shape of the shielding layer 41. Therefore, as shown in FIGS. 4, 5 (a), and 5 (c), the distance between the pair of mirrors 51, 52 and the shielding layer 41 is substantially constant over the entire one end surfaces 51 b, 52 b. can do. Therefore, in any part of the pair of mirrors 51 and 52 in the vertical direction, it is possible to ensure a sufficient range (view range) for viewing the scenery outside the vehicle through the blind spot assisting device 50.

In order to set the one end surfaces 51b and 52b and the other end surfaces 51c and 52c of the pair of mirrors 51 and 52 in a curved shape (curved shape), for example, the following may be performed (see FIGS. 4 and 5).
(1) On the plane passing through the upper ends of the pair of mirrors 51, 52, the position P1u of the one end face 51b of the semi-transmissive mirror 51 and the position P2u of the one end face 52b of the mirror 52 are The point is set close to the surface 24 a and the side edge 41 a of the shielding layer 41.
(2) The position P1m of the one end surface 51b of the semi-transmissive mirror 51 and the position P2m of the one end surface 52b of the mirror 52 on the plane passing through the center of the height of the pair of mirrors 51 and 52 are The point is set close to the side surface 24 a and the side edge 41 a of the shielding layer 41.
(3) On the plane passing through the lower ends of the pair of mirrors 51 and 52, the position P1d of the one end surface 51b of the semi-transmissive mirror 51 and the position P2d of the one end surface 52b of the mirror 52 are The point is set close to the surface 24 a and the side edge 41 a of the shielding layer 41.
(4) The positions P6u, P6m, and P6d of the other end surface 52c of the mirror 52 are made to correspond to the one end surface 52b of the mirror 52.
(5) By setting a curve connecting the upper, middle, and lower three points, the one end surfaces 51b and 52b and the other end surfaces 51c and 52c of the pair of mirrors 51 and 52 are connected to the surface 24a on the passenger compartment side of the windshield 24. And the side edge 41a of the shielding layer 41 can be curved.

  As shown in FIGS. 3 and 6, in the semi-transmissive mirror 51, the surface 51f opposite to the reflective surface 51a is referred to as a “transmissive surface 51f”. The blind spot assisting device 50 has a louver 60 located on the transmission surface 51 f of the semi-transmissive mirror 51. The louver 60 blocks the external light SL incident from the transmission surface 51f side toward the semi-transmission mirror 51.

  6 to 8, the louver 60 includes a plurality of, for example, six panels 61 to 66, and a frame 67 (see FIG. 8) connecting these panels 61 to 66. Each of the panels 61 to 66 and the frame 67 are made of a non-translucent material such as black resin. 6 and 7, the frame 67 is omitted.

  Each panel 61-66 is comprised by the vertical-plate-shaped light-shielding plate extended to an up-down direction along the windshield 24, when the blind spot auxiliary | assistance apparatus 50 is mounted in the vehicle 10. FIG. The panels 61 to 66 are arranged in a line along the transmission surface 51f of the semi-transmission mirror 51 from the one end surface 51b side to the other end surface 51c side. Furthermore, each panel 61-66 is inclined from the transmission surface 51f of the semi-transmission mirror 51 to the rear of the vehicle 10 and the center of the vehicle width when the louver 60 is viewed from above so that the front ends thereof face the viewer Mn side. Yes.

  Next, the reason why the blind spot assisting device 50 has the louver 60 will be described. As shown in FIG. 6, the pair of mirrors 51 and 52 can receive external light not only from the light beam La from the blind spot region Ad (see FIG. 3) but also from the other. Here, the case where there is no louver 60 is assumed. A perpendicular to the transmission surface 51f of the semi-transmission mirror 51 is VL. Of the external light incident on the transmission surface 51f of the semi-transmission mirror 51, a part of the external light (hereinafter referred to as stray light SL) incident at a certain incident angle α with respect to the vertical line VL from the front of the vehicle is transmitted through the transmission surface 51f. Reflected toward the viewpoint Pi. Further, a part of the stray light SL is transmitted through the semi-transmissive mirror 51 and then reflected by the reflecting surface 52a of the mirror 52, and is again transmitted through the semi-transmissive mirror 51 toward the viewpoint Pi. Such stray light SL is a factor that reduces the visibility of visually recognizing the image of the object Oj (see FIG. 3) reflected on the semi-transmissive mirror 51.

  On the other hand, the blind spot assisting device 50 of the present invention has a louver 60. As a result, it is possible to ensure high visibility by blocking the stray light SL incident on the transmission surface 51f of the semi-transmissive mirror 51. This is the reason why the blind spot assisting device 50 has the louver 60.

  Here, in each of the plurality of panels 61 to 66, the length extending from the base end positioned on the transmission surface 51f toward the viewer Mn side is hereinafter referred to as “the width of the plurality of panels 61 to 66”. . The width and the number of the plurality of panels 61 to 66 are appropriately set so that the stray light SL incident on the transmission surface 51f can be blocked and the view from the viewpoint Pi is not excessively blocked.

  That is, each panel 61-66 can block many stray lights SL by a small number, so that the width | variety is large. However, in the wide panels 61 to 66, the panels 61 to 66 themselves block the view from the viewpoint Pi. On the other hand, the louver 60 of the present invention suppresses the width of each of the panels 61 to 66 by setting the number of the plurality of panels 61 to 66 to six. The outline of the base end face of each panel 61 to 66 is substantially (basically) the same as the curved outline of the one end face 51 b of the semi-transmissive mirror 51. The contour of the front end surface of each panel 61 to 66 is substantially (basically) the same as the curved contour of the other end surface 51 c of the semi-transmissive mirror 51.

  Although all of the stray light SL is preferably blocked by the panels 61 to 66, the effect of improving the visibility can be obtained even when part of the stray light SL is blocked.

  Next, the arrangement and inclination angles of the panels 61 to 66 with respect to the transmission surface 51f of the semi-transmissive mirror 51 will be described with reference to FIG.

  Here, each of the six panels 61 to 66 is defined as follows. The panel 61 adjacent to the one end surface 51b of the semi-transmissive mirror 51 is referred to as a “first panel 61”. The panel 62 positioned immediately behind the first panel 61 is referred to as a “second panel 62”, and sequentially toward the other end surface 51c side of the semi-transmissive mirror 51, the “third panel 63”, the “fourth panel 64”, and the “second panel”. 5 panel 65 ”and“ sixth panel 66 ”.

  Further, the semi-transmissive mirror 51 is defined as follows. An intersection P1 between the transmission surface 51f and the one end surface 51b of the semi-transmission mirror 51 is defined as a “first intersection P1”. An intersection P2 between the reflection surface 52a and the one end surface 52b of the mirror 52 is defined as a “second intersection P2”. Let Di be the distance from the reflecting surface 51a of the semi-transmissive mirror 51 to the second intersection P2. A point P3 when it is assumed that the second intersection P2 is further separated from the reflecting surface 51a of the semi-transmissive mirror 51 by twice the distance Di is defined as a “third intersection P3”. A point P4 when it is assumed that the third intersection point P3 is further separated from the reflecting surface 51a of the semi-transmissive mirror 51 by twice the distance Di is defined as a “fourth intersection point P4”. A point P5 when it is assumed that the fourth intersection point P4 is further separated from the reflecting surface 51a of the semi-transmissive mirror 51 by twice the distance Di is defined as a “fifth intersection point P5”.

  When the transmission surface 51f of the semi-transmission mirror 51 is viewed from the viewpoint Pi determined as the reference viewpoint position, one end surface 52b of the mirror 52 can be seen through the transmission surface 51f. As shown in FIG. 7, the one end face 52b is visually recognized as a curved line in the vertical direction in the front view when viewed from the viewpoint Pi.

  On the other hand, as shown in FIG. 9, the base end face 61a of the first panel 61 substantially (basically) matches the first intersection point P1. The first panel 61 is located along a first straight line L1 that connects the viewpoint Pi and the first intersection P1. As a result, when viewed from the viewpoint Pi, the first panel 61 appears to overlap the one end surface 52 b of the mirror 52. The inclination angle of the first panel 61 with respect to the transmission surface 51f is β1.

  The second panel 62 is provided to shorten the length of the first panel 61, and is provided between the first panel 61 and the third panel 63. The inclination angle β2 of the second panel 62 with respect to the transmission surface 51f is the same as the inclination angle β1 of the first panel 61.

  The third panel 63 is located along a second straight line L2 connecting the viewpoint Pi and the second intersection P2. The second straight line L2 is a boundary line between the next first region and the second region. The first area is an area where the background outside the vehicle is visually recognized through the semi-transmissive mirror 51 from the viewpoint Pi. In the second region, a light beam La (see also FIG. 3) representing an image is reflected in the order of the semi-transmissive mirror 51 and the mirror 52 by entering the non-opposing portion 51e (first time), and then (2 The second time is an area where an image is visually recognized by being incident on the semi-transmissive mirror 51. The inclination angle β3 of the third panel 63 with respect to the transmission surface 51f is larger than the inclination angle β2 of the second panel 62.

  The fourth panel 64 is located along a third straight line L3 that connects the viewpoint Pi and the third intersection point P3. An intersection point Q3 between the reflecting surface 52a of the actual mirror 52 indicated by the solid line and the third straight line L3 is defined as a “third straight video point Q3”. When the direction of the third straight line L3 is viewed from the viewpoint Pi, the fourth panel 64 appears to overlap the image of the incident side end portion reflected on the third straight video point Q3. That is, the third straight line L3 is a boundary line between the second region and the next third region. The third region is a region in which the light beam La is further reflected in the order of the semi-transmissive mirror 51 and the mirror 52 and is incident on the semi-transmissive mirror 51 again (third time), thereby visually recognizing the image. The image of the incident side end of the mirror 52 is visually recognized on the third straight line L3. The inclination angle β4 of the fourth panel 64 with respect to the transmission surface 51f is larger than the inclination angle β3 of the third panel 63.

  The fifth panel 65 is located along a fourth straight line L4 connecting the viewpoint Pi and the fourth intersection P4. An intersection point Q4 between the reflecting surface 52a of the actual mirror 52 indicated by the solid line and the fourth straight line L4 is defined as a “fourth straight video point Q4”. When the direction of the fourth straight line L4 is viewed from the viewpoint Pi, the fifth panel 65 appears to overlap the image of the incident side end portion reflected on the fourth straight video point Q4. That is, in the fourth straight line L4, when the light beam La is incident on the semi-transmissive mirror 51 for the third time, the light beam La is reflected in the order of the third region for visually recognizing the image, and further the semi-transmissive mirror 51 and the mirror 52. This is the boundary line with the fourth region where the image incident on the semi-transmissive mirror 51 is viewed again (fourth time). The image of the incident side end of the mirror 52 is visually recognized on the fourth straight line L4. The inclination angle β5 of the fifth panel 65 with respect to the transmission surface 51f is larger than the inclination angle β4 of the fourth panel 64.

  The sixth panel 66 is located along a fifth straight line L5 that connects the viewpoint Pi and the fifth intersection P5. An intersection point Q5 between the reflecting surface 52a of the actual mirror 52 indicated by the solid line and the fifth straight line L5 is defined as a “fifth straight video point Q5”. When the direction of the fifth straight line L5 is viewed from the viewpoint Pi, the sixth panel 66 appears to overlap the image on the incident side end portion reflected in the fifth straight video point Q5. That is, in the fifth straight line L5, when the light beam La is incident on the semi-transmissive mirror 51 for the fourth time, the light beam La is reflected in the order of the fourth region for visually recognizing the image, and further the semi-transmissive mirror 51 and the mirror 52. This is a boundary line with the fifth region where the image incident on the semi-transmissive mirror 51 is viewed again (fifth time). The image of the incident side end of the mirror 52 is visually recognized on the fourth straight line L4. The inclination angle β6 of the sixth panel 66 with respect to the transmission surface 51f is larger than the inclination angle β5 of the fifth panel 65.

  As described above, the inclination angles β1 to β6 of the panels 61 to 66 with respect to the transmission surface 51f increase stepwise from the incident side toward the emission side (in the traveling direction of the light beam La of the pair of mirrors 51 and 52). It is set to be. That is, the relation “β1 = β2 <β3 <β4 <β5 <β6” is established. For this reason, since the front-end | tip of each panel 61-66 faces viewpoint Pi, the width | variety of each panel 61-66 visually recognized from viewpoint Pi is made narrow, and each panel 61-66 is obstruct | occluded among the visual fields of the viewer Mn. The area can be reduced. Therefore, even if it is the structure which provides each panel 61-66, favorable visibility can be ensured.

  Further, at least a part of the plurality of panels 61 to 66 (panels 63 to 66) is an intersection P2 between the reflection surface 52a and the one end surface 52b of the mirror 52 as viewed from a predetermined reference viewpoint position (viewpoint Pi). (Second intersection point P2), or arranged so as to overlap each of the straight video points Q3 to Q5. According to this, even if it is the structure which reduces the line of the up-down direction in a front view, and provides the panels 61-66, favorable visibility can be ensured.

  As is clear from the above description, the contour of the louver 60 approximates the contours of the semi-transmissive mirror 51 and the mirror 52. For this reason, the contour line formed by the louver 60 substantially matches the curved contour line formed by the pair of mirrors 51 and 52. Therefore, troublesomeness in the field of view of the occupant Mn can be reduced.

  The pair of mirrors 51 and 52 and the louver 60 are housed in a case 70 as shown in FIG. The case 70 may be configured to be curved in accordance with the shape of the pair of mirrors 51 and 52 and the louver 60, or may be a linear configuration. That is, it is preferable to set the outer shape of the case 70 with an emphasis on the influence on the appearance around the front pillar 21.

  In order to set the louver 60 in a curved shape (curved shape), for example, the following may be used. One end surface 51b of the semi-transmissive mirror 51, which is the base end of the first panel 61, is set in a curved shape, that is, a curved shape as described above (see FIGS. 4 and 5). Therefore, as shown in FIG. 7, the curved surfaces of the panels 61 to 66 are set in accordance with the curved surface of the one end surface 51 b of the semi-transmissive mirror 51. And as FIG. 9 shows, each panel 61-66 is extended toward the viewpoint P1. As a result, it is possible to obtain each of the panels 61 to 66 curved (curved) so as to be convex toward the surface 24a of the windshield 24 on the passenger compartment side.

  The blind spot assisting device 50 according to the present invention is not limited to the embodiment as long as the functions and effects of the present invention are exhibited.

  The blind spot assisting device 50 of the present embodiment is disposed on the right front pillar 21 when viewed from the driver's seat side of the vehicle 10, but a similar blind spot assisting device 50 is also disposed on the left front pillar 21. May be.

  In addition, the pair of mirrors 51 and 52 of the blind spot assisting device 50 may have a plate-like configuration arranged 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 51 and 52 can have a curved configuration when the vehicle 10 is viewed from above (see Japanese Patent Application Laid-Open No. 2006-094117). More specifically, the reflective surface 51a of the semi-transmissive mirror 51 has a concave curved shape. The reflecting surface 52 a of the mirror 52 has a curved surface shape that is convex toward the reflecting surface 51 a of the semi-transmissive mirror 51.

  The blind spot assisting device 50 of the present invention is provided inside a vehicle 10 having a windshield 24 that is curved so as to be convex forward of the vehicle, and a belt-like shielding layer 41 provided on the entire periphery of the windshield 24. Suitable for mounting.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Car body 21 Front pillar 21a Inner side surface 24 Windshield 24a Vehicle side surface 34 Vehicle room 41 Shielding layer 41a Side edge 50 Blind spot auxiliary device 51 Semi-transmissive mirror 51a Reflective surface 51b One end surface 51c The other end surface 51f Transmission surface 52 Mirror 52a Reflection surface 52b One end surface 52c Other end surface 60 Louver Ad Blind spot area Mn Crew (viewer)
Oj object

Claims (2)

A windshield that is provided between the left and right front pillars and is curved so as to protrude forward of the vehicle,
A belt-like shielding layer that is provided on the entire periphery of the windshield, curves so as to protrude forward of the vehicle in accordance with the shape of the windshield, and blocks light transmission,
A blind spot assisting device capable of projecting an image of an object outside the vehicle in a blind spot area that is blocked by one of the left and right front pillars and is not visible to the occupant. ,
A vertical plate-shaped semi-transmissive mirror that receives light representing the image and reflects a part thereof and transmits the rest; and
A vertical plate-like mirror that faces the reflecting surface of the semi-transmissive mirror with a gap and reflects the reflected light toward the semi-transmissive mirror;
When the blind spot assisting device is mounted on the vehicle, the transflective mirror is positioned on the occupant side of the mirror,
When it is assumed that the one end surface of the semi-transmissive mirror and the one end surface of the mirror are close to the vehicle-facing surface of the windshield and the side edge of the shielding layer, the shielding layer has a curved shape. A blind spot assisting device having an approximate contour. A louver that blocks outside light incident on the transflective mirror from the translucent surface side of the transflective mirror;
The louver is located on the transmission surface of the semi-transmissive mirror,
The blind spot assisting device according to claim 1, wherein a contour of the louver approximates each contour of the semi-transmissive mirror and the mirror.

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