Patent Publication Number: US-2023159002-A1

Title: Vehicle windshield wiper

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is based on and claims the benefit of priority from Japanese Patent Application No. 2021-190466, filed on Nov. 24, 2021. The entire disclosure of the above application is incorporated herein by reference. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a vehicle windshield wiper that includes a washer nozzle. 
     Related Art 
     A vehicle windshield wiper that includes a washer nozzle is known. For example, the washer nozzle is mounted in a tip end portion of a wiper arm provided in the vehicle windshield wiper. A washer fluid is supplied by being sprayed onto a wiped surface at each location in a longitudinal direction of a wiper blade provided in the vehicle windshield wiper, from a center portion in the longitudinal direction of the wiper blade. 
     SUMMARY 
     One aspect of the present disclosure provides a vehicle windshield wiper that includes a wiper blade, a wiper arm, and a washer nozzle. The wiper blade wipes a wiped surface. The wiper arm is connected to the wiper blade and transmits driving force for a wiping operation to the wiper blade. The washer nozzle supplies a washer fluid to the wiped surface by spraying and is integrally provided in the wiper arm or the wiper blade. When an end portion in a longitudinal direction of the vehicle windshield wiper on a side that coincides with a tip end portion of the vehicle windshield wiper is a tip end portion of the wiper blade and an end portion on an opposite side is a rear end portion of the wiper blade, the washer nozzle includes a spraying portion that emits a spray of the washer fluid that is oriented downward at an angle towards at least the tip end side of the wiper blade, the spray having a film-like spread in the longitudinal direction of the wiper blade. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the accompanying drawings: 
         FIG.  1    is a configuration diagram illustrating a vehicle windshield wiper that includes a washer nozzle according to an embodiment; 
         FIG.  2    is a front view of the washer nozzle according to the embodiment; 
         FIG.  3    is a perspective view of the washer nozzle according to the embodiment in an assembled state; 
         FIG.  4    is a perspective view of the washer nozzle according to the embodiment in an exploded state; 
         FIG.  5    is a left-side view of the washer nozzle according to the embodiment; 
         FIG.  6    is a right-side view of the washer nozzle according to the embodiment; 
         FIG.  7    is a bottom view of the washer nozzle according to the embodiment; 
         FIG.  8    is a perspective view of a nozzle component of the washer nozzle according to the embodiment; and 
         FIG.  9    is a cross-sectional view of the nozzle component of the washer nozzle according to the embodiment. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     As a vehicle windshield wiper that includes a washer nozzle, a technology that is disclosed in Japanese Patent Publication No. 6755016 and the like are known. For example, the washer nozzle is mounted in a tip end portion of a wiper arm. A washer fluid is supplied by being sprayed onto a wiped surface at each location in a longitudinal direction of a wiper blade, from a center portion in the longitudinal direction of the wiper blade. 
     The washer fluid that is supplied by being sprayed onto the wiped surface from the washer nozzle is preferably supplied without waste within a longitudinal direction range of the wiper blade, if subsequent wiping by the wiper blade is taken into consideration. Whether the supply of the washer fluid in this manner is appropriately performed not only when the vehicle is stopped, but also when the vehicle is traveling is an issue to be examined. 
     That is, vehicle travel wind that is wind that moves from a front side of a vehicle towards a rear side while the vehicle is traveling acts on the vehicle windshield wiper. During a process of a wiping operation by the vehicle windshield wiper, when the longitudinal direction of the wiper blade runs along a longitudinal direction of the vehicle, the vehicle travel wind also runs along the longitudinal direction of the wiper blade. In such a state, when the washer fluid is sprayed in a spray that has linear directionality so that the washer fluid is supplied so as to reach a tip end portion of the wiper blade, propulsion force of the washer fluid is strong in the spray that has linear directionality, and the washer fluid lands in a localized manner. 
     In addition, because an angle of incidence of the washer fluid relative to the wiped surface is small, the washer fluid after landing on the wiped surface greatly spreads toward a tip end side in a spray direction due to the propulsion force. The washer fluid tends to be supplied beyond the tip end portion of the wiper blade. Furthermore, the spreading of the washer fluid is further facilitated due to effects of the travel wind, as well, during high-speed travel, and an area in which the washer fluid is supplied is unstable. The washer fluid is supplied beyond the longitudinal direction range of the wiper blade and is wasted. Moreover, if the spray is oriented towards an inner side in the longitudinal direction of the wiper blade to suppress runoff of the washer fluid beyond the tip end portion of the wiper blade, the washer fluid cannot be sufficiently supplied to the tip end portion during low-speed travel. 
     It is thus desired to provide a vehicle windshield wiper that includes a washer nozzle that is capable of favorably supplying a sprayed washer fluid within a longitudinal direction range of a wiper blade, even in a state of being affected by vehicle travel wind. 
     One exemplary embodiment of the present disclosure provides a vehicle windshield wiper that includes: a wiper blade that wipes a wiped surface; a wiper arm that is connected to the wiper blade and transmits driving force for a wiping operation to the wiper blade; and a washer nozzle that supplies a washer fluid to the wiped surface by spraying and is integrally provided in the wiper arm or the wiper blade. When an end portion in a longitudinal direction of the vehicle windshield wiper on a side that coincides with a tip end portion of the vehicle windshield wiper is a tip end portion of the wiper blade and an end portion on an opposite side is a rear end portion of the wiper blade, the washer nozzle includes a film-like spraying portion that emits a spray of the washer fluid that is oriented downward at an angle towards at least the tip end side of the wiper blade, the spray having a film-like spread in the longitudinal direction of the wiper blade. Here, the film-like spraying portion does not refer to a spraying portion that is formed into a film-like shape, but refers to a spraying portion that emits a spray having a film-like spread. 
     According to the above-described configuration, the washer nozzle that is included in the vehicle windshield wiper emits, from the film-like spraying portion, a spray that has a film-like spread in the longitudinal direction of the wiper blade, in the spray of the washer fluid that is oriented downward at an angle towards the tip end side of the wiper blade. The washer fluid that is sprayed in a film-like manner from the film-like spraying portion can be made to continuously land on the wiped surface within a longitudinal direction range of the wiper blade. For example, compared to intermittent landing such as that when sprays that have linear directionality are emitted at multiple points, the washer fluid that is substantially uniformly continuous in the longitudinal direction can be supplied. 
     In addition, the washer fluid that is sprayed so as to spread in a film-like manner has a weaker propulsion force compared to a spray that has linear directionality. Therefore, the washer fluid after landing on the wiped surface also has a smaller spread in a spray direction resulting from the propulsion force. Therefore, even when the tip end side of the film-like spray is sprayed near the tip end portion of the wiper blade, the washer fluid is suppressed from spreading due to the propulsion force after landing. That is, the sprayed washer fluid can be favorably supplied to the wiped surface within the longitudinal direction range of the wiper blade, without waste. 
     A vehicle windshield wiper according to an embodiment will hereinafter be described. 
     Overall Configuration of a Vehicle Windshield Wiper  10   
     A vehicle windshield wiper  10  according to the present embodiment shown in  FIG.  1    wipes an outer surface of a windshield WS on a front side of a vehicle. The outer surface of the windshield WS serves as a wiped surface WSa. The vehicle windshield wiper  10  includes a wiper arm  11  and a wiper blade  12 . The vehicle windshield wiper  10  is configured such that a tip end portion of the wiper arm  11  and a center portion in a longitudinal direction of the wiper blade  12  are connected. The vehicle windshield wiper  10  reciprocally swings the wiper arm  11  by being driven by a wiper motor (not shown). The wiper blade  12  that receives driving force from the wiper arm  11  reciprocally swings in a direction that is orthogonal to the longitudinal direction thereof. The wiper blade  12  wipes the wiped surface WSa in a circular arc shape and wipes away foreign matter, such as raindrops, that are attached to the wiped surface WSa. In addition, the vehicle windshield wiper  10  according to the present embodiment integrally includes a washer nozzle  20  that supplies a washer fluid W to the wiped surface WSa by spraying. 
     Configurations of the Wiper Arm  11  and the Wiper Blade  12   
     As an example of various configurations, the wiper blade  12  includes a main lever  13 , two yoke levers  14 , two movable covers  15 , and a blade rubber  16 . These components each have a shape that is elongated in one direction and are arranged such that respective longitudinal directions coincide with one another. 
     Respective center portions of the yoke levers  14  are rotatably connected by shaft portions  13   a  to both end portions in the longitudinal direction of the main lever  13 . In a portion of each yoke lever  14  that slightly protrudes outward from the main lever  13  in the longitudinal direction, a base end portion of the movable cover  15  is rotatably connected by a shaft portion  15   a . The movable covers  15  and the main lever  13  that are connected to the yoke levers  14  have an integrated outer shape that is continuous in the longitudinal direction. The movable covers  15  and the main lever  13  are configured such that a length in the longitudinal direction is equal to a length in the longitudinal direction of the blade rubber  16  that is long. 
     Gripping portions  14   a  for gripping the blade rubber  16  are provided in both end portions in the longitudinal direction of each yoke lever  14 . In addition, a gripping portion  15   b  for gripping the blade rubber  16  is provided in a tip end portion of each movable cover  15 . The total of six gripping portions  14   a  and  15   b  that are provided in the yoke levers  14  and the movable covers  15  are positioned at predetermined intervals in the longitudinal direction of the blade rubber  16 , and grip the blade rubber  16  at respective locations in the longitudinal direction. Furthermore, in at least one location of the gripping portions  14   a  and  15   b , the blade rubber  16  is locked so as to be immovable in the longitudinal direction. 
     The wiper blade  12  such as this is rotatably connected to the tip end portion of the wiper arm  11  in a center portion in the longitudinal direction of the main lever  13 . The tip end portion of the wiper arm  11  has a hook portion (not shown) in which an arm material that is fabricated into a long, narrow plate shape is bent into a U shape. The tip end portion of the wiper arm  11  is connected to the main lever  13  of the wiper blade  12  in the hook portion with a connecting member (such as a clip that is not shown) therebetween. A portion of the tip end portion of the wiper arm  11  following the hook portion is a tip-end plate portion  11   a  that is formed into a plate shape of a predetermined length. The tip-end plate portion  11   a  is a portion in which the washer nozzle  20  is mounted. The washer nozzle  20  that is mounted in the tip end portion (a portion that is close to the hook portion and further towards a rear end side than the hook portion is) of the washer arm  11  supplies the washer fluid W by spraying towards the wiped surface WSa, from near an upper portion of the center portion in the longitudinal direction of the wiper blade  12 . 
     Here, for use in descriptions below and the like regarding the washer nozzle  20 , an end portion in the longitudinal direction on a side that coincides with the tip end portion of the vehicle windshield wiper  10  is referred to as a tip end portion  12   a  of the wiper blade  12 . An end portion on a side opposite the tip end portion  12   a  is referred to as a rear end portion  12   a  of the wiper blade  12 . In addition, in a state in which the washer nozzle  20  is mounted in the wiper arm  11 , a vertical direction (up/down direction) of the washer nozzle  20  is a direction receding from/approaching the wiped surface WSa to be wiped by the wiper blade  12 . A lateral direction (left/right direction) of the washer nozzle  20  is the longitudinal direction of the wiper blade  12 . A longitudinal direction (depth direction) of the washer nozzle  20  is a transverse direction (lateral direction) that is orthogonal to the longitudinal direction of the wiper blade  12 . 
     Configuration of the Washer Nozzle  20   
     As shown in  FIG.  2    to  FIG.  4    and the like, the washer nozzle  20  includes a nozzle main body  21  and first to third nozzle components  31  to  33 . 
     The nozzle main body  21  has a mounting portion  22  on a back side of an upper portion thereof. The mounting portion  22  is provided to mount the washer nozzle  20  in the tip-end plate portion  11   a  of the wiper arm  11 . The mounting portion  22  has a mounting recessing portion  22   a  that is open towards the back side. The tip-end plate portion  11   a  of the wiper arm  11  is inserted into the mounting recessing portion  22   a  from one side in a lateral direction that is orthogonal to the longitudinal direction of the wiper arm  11 . The mounting portion  22  is mounted to the tip-end plate portion  11   a  by the tip-end plate portion  11   a  being inserted into the mounting recessing portion  22   a . As a result, the washer nozzle  20  is held to the tip-end plate portion  11   a  of the wiper arm  11 . Here, the washer nozzle  20  can be attached and detached to and from the tip-end plate portion  11   a  of the wiper arm  11 . In addition, the tip-end plate portion  11   a  of the wiper arm  11  and the mounting recessing portion  22   a  are engaged in the longitudinal direction. As a result, the washer nozzle  20  is mounted in a state in which movement in the longitudinal direction relative to the wiper arm  11  is restricted. 
     A downward extending portion  23  that extends downward is provided on a front side in the longitudinal direction that is a side opposite the mounting portion  22  of the nozzle main body  21 . The first to third nozzle components  31  to  33  are integrally incorporated into a lower portion of the downward extending portion  23  of the nozzle main body  21 . The first to third nozzle components  31  to  33  are arranged in an array in the lateral direction in the lower portion of the downward extending portion  23  of the nozzle main body  21 . In the state in which the washer nozzle  20  is mounted in the wiper arm  11 , the first to third nozzle components  31  to  33  are arranged in an array in the longitudinal direction of the wiper blade  12 . In addition, in this mounted state of the washer nozzle  20 , the first to third nozzle components  31  to  33  that are positioned on the front side of the nozzle main body  21  are arranged so as to be displaced towards one side (a front side of the wiper blade  12  shown in  FIG.  1   ) in the transverse direction of the wiper blade  12 . That is, the first to third nozzle component  31  to  33  are positioned on a front side of a forward swing in a process of reciprocal wiping of the wiper blade  12 . 
     Furthermore, the first to third nozzle components  31  to  33  respectively configure first to third spraying portions N 1  to N 3  of the washer nozzle  20 . The first spraying portion N 1  emits a spray that is oriented downward at an angle that is further towards the tip end side than the approximately center portion in the longitudinal direction of the wiper blade  12  in which the washer nozzle  20  is positioned. The second spraying portion N 2  emits a spray that is oriented downward at approximately the center in the longitudinal direction of the wiper blade  12 . The third spraying portion N 3  emits a spray that is oriented downward at an angle that is further towards the rear end side than the approximately center portion in the longitudinal direction of the wiper blade  12  is. The first to third spraying portions N 1  to N 3  supply the washer fluid W by spraying onto the wiped surface WSa on one side in the transverse direction of the wiper blade  12 . When the washer fluid W is sprayed towards the forward-swing side of the reciprocal wiping of the wiper blade  12 , the washer fluid W is supplied in advance towards a front side of an advancing direction of the wiper blade  12 , that is, the wiped surface WSa immediately before wiping by the wiper blade  12 . 
     First Spraying Portion N 1   
     The first spraying portion N 1  is configured using the first nozzle component  31  shown in  FIG.  4   ,  FIG.  5   ,  FIG.  7    to  FIG.  9   , and the like. The first nozzle component  31  is assembled on one side in the lateral direction in the lower portion of the downward extending portion  23  of the nozzle main body  21 . That is, in the state in which the washer nozzle  20  is mounted in the wiper arm  11 , the first nozzle component  31  is assembled to a portion that corresponds to the tip end portion  12   a  side of the wiper blade  12 . 
     In the first nozzle component  31 , a substantially spherical holding portion  31   a  and a nozzle portion  31   b  that sprays the washer fluid W are integrally provided. The holding portion  31   a  is mounted in a fluid-tight state in a holding recessing portion  24   a  that is provided in the downward extending portion  23  of the nozzle main body  21 . The holding portion  31   a  is mounted in the holding recessing portion  24   a . As a result, the first nozzle component  31  is held to the nozzle main body  21  in a rollable manner. In addition, the holding portion  31   a  has a holding configuration that allows three-dimensional movement (rolling) relative to the nozzle main body  21  due to the shape of the holding portion  31   a  itself. That is, in the first nozzle component  31 , an orientation of the nozzle portion  31   b  can be changed. That is, a spray direction of the washer fluid W can be changed. Furthermore, in the holding portion  31   a , an introduction flow path  31   c  for introducing the washer fluid W from the nozzle main body  21  side is provided (see  FIG.  9   ). 
     The nozzle portion  31   b  has a spray opening  31   d  in a center portion and a pair of guide wall portions  31   e . The spray opening  31   d  is formed into a substantially elliptical shape that is elongated in one direction. In addition, a throttle portion  31   f  is provided in a center portion in the longitudinal direction of the spray opening  31   d . The spray opening  31   d  communicates with the introduction flow path  31   c  of the holding portion  31   a . The pair of guide wall portions  31   e  are erected on both sides in the transverse direction of the spray opening  31   d . The guide wall portions  31   e  regulate spreading towards the longitudinal direction of the washer nozzle  21  (the lateral direction of the wiper blade  12 ) of the washer fluid W that is sprayed from the spray opening  31   d . That is, in the state in which the washer nozzle  20  is mounted in the washer arm  11 , the guide wall portions  31  regulate spreading towards the transverse direction of the wiper blade  12  of the washer fluid W that is sprayed from the spray opening  31   d . 
     As shown in  FIG.  1    and  FIG.  2   , a spray of the washer fluid W in a first spray mode A 1  that is oriented downward at an angle towards the tip end side of the wiper blade  12  is emitted from the spray opening  31   d  of the first nozzle component  31 . The first spray mode A 1  is a spray mode that has a film-like spread in the longitudinal direction of the wiper blade  12  (simply referred to as a film-like spray). The first spray mode A 1  assumes continuous landing of the washer fluid W onto the wiped surface WSa in an area, to the approximately center portion, from a point that is approximately one-fourth a length of the wiper blade  12  in the longitudinal direction from the tip end portion  12   a . In addition, of the spray in the first spray mode A 1 , a center portion in the longitudinal direction is set to have a slightly stronger spray momentum than other portions. In other words, the first spray mode A 1  forms a shape that spreads in a film-like manner in reflection of the elliptical shape of the spray opening  31   d . In addition, the spray momentum at the center portion in the spraying mode A 1  is strong in reflection of the throttle portion  31   f  of the spray opening  31   d . 
     Second Spraying Portion N 2   
     The second spraying portion N 2  is configured using the second nozzle component  32  shown in  FIG.  4   ,  FIG.  7   , and the like. The second nozzle component  32  is assembled to the center portion in the lateral direction in the lower portion of the downward extending portion  23  of the nozzle main body  21 . That is, in the state in which the washer nozzle  20  is mounted in the wiper arm  11 , the second nozzle component  32  is assembled to a portion that corresponds to the approximately center portion in the longitudinal direction of the wiper blade  12  in a state in which spray openings  32   c   1  to  32   f   1 , described hereafter, oppose the wiped surface WSa. 
     The second nozzle component  32  is configured to have a substantially rectangular parallelepiped shape. The second nozzle component  32  is held so as to be mounted in a fluid-tight state in a holding recessing portion  24   b  that is provided in the downward extending portion  23  of the nozzle main body  21 . An upper portion of the second nozzle component  32  is an inserting portion  32   a  that has a tapered shape. Insertion of the second nozzle component  32  into the holding recessing portion  24   b  is thereby facilitated. 
     On a surface on a front side of the second nozzle component  32 , an introduction flow path  32   b  for introducing the washer fluid W from the nozzle main body  21  side and spray flow paths  32   c  to  32   f  that branch out into four flow paths from the introduction flow path  32   b  are provided. The spray flow paths  32   c  to  32   f  each have a smaller flow path cross-sectional area than the introduction flow path  32   b . The introduction flow path  32   b  and the spray flow paths  32   c  to  32   f  are formed into linear groove shapes that are surrounded by wall surfaces on three sides and open on one side (the overall front side). That is, the second nozzle component  32  is assembled to the holding recessing portion  24   b  of the nozzle main body  21 , and thus the open portion of the groove shape is sealed by an inner wall surface of the holding recessing portion  24   b . Flow paths in which respective four peripheral sides of the introduction flow path  32   b  and the spray flow paths  32   c  to  32   f  are closed are thereby completed. In other words, because the introduction flow path  32   b  and the spray flow paths  32   c  to  32   f  are formed into groove shapes, fabrication of the flow paths  32   b  to  32   f  in the second nozzle component  32  is facilitated. More specifically, the plurality of flow paths  32   b  to  32   f  and the spray openings  32   c   1  to  32   f   1  can be easily simultaneously fabricated in the second nozzle component  32  without use of a slide mold or the like. When the second nozzle component  32  is assembled to the holding recessing portion  24   b  of the nozzle main body  21 , the four spray openings  32   c   1  to  32   f   1  that are opening portions of the four spray flow paths  32   c  to  32   f  are configured in a lower portion of the washer nozzle  20  (see  FIG.  7   ). The spray openings  32   c   1  to  32   f   1  are each formed into a rectangular shape. 
     In addition, as shown in  FIG.  1    and  FIG.  2   , a spray of the washer fluid W in a second spray mode A 2  that is oriented downward at the center of the wiper blade  12  is emitted from each of the spray openings  32   c   1  to  32   f   1  of the second nozzle component  32 . The second spray mode A 2  is configured by two spray modes that are oriented downward at angles that are slightly towards the tip end side and two spray modes that are oriented downward at angles that are slightly towards the rear end side. In other words, the spray flow paths  32   c  to  32   f  that determine the second spray mode A 2  have tilted configurations in which the sprays are emitted at respective orientations. The second spray mode A 2  is a spray mode in which the four spray modes each have linear directionality (simply referred to as a linear spray). The second spray mode A 2  is set such that landing positions of the washer fluid W from the spray openings  32   c   1  to  32   f   1  are arrayed in the longitudinal direction so as to follow the landing position in the first spray mode A 1  in the longitudinal direction of the wiper blade  12 , and the washer fluid W is supplied to the wiped surface WSa near the approximately center portion of the wiper blade  12 . 
     In particular, in the two spray modes that are oriented downward at angles that are slightly towards the rear end side of the wiper blade  12 , the sprays are emitted from the spray openings  32   e   1  and  32   f   1  of the flow paths  32   e  and  32   f  of the second nozzle component  32 . Respective directions in the two spray modes are set such that the orientation of the spray from the spray opening  32   f   1  is further towards the rear end side than the orientation of the spray from the spray opening  32   e   1  is. 
     Third Spraying Portion N 3   
     The third spraying portion N 2  is configured using the third nozzle component  33  shown in  FIG.  4   ,  FIG.  6   ,  FIG.  7   , and the like. The third nozzle component  33  is assembled on the other side in the lateral direction in the lower portion of the downward extending portion  23  of the nozzle main body  21 . That is, in the state in which the washer nozzle  20  is mounted in the wiper arm  11 , the third nozzle component  33  is assembled in a rollable manner to a portion that corresponds to the rear end portion  12   b  side of the wiper blade  12 . 
     The third nozzle component  33  is configured to have a substantially spherical shape. The third nozzle component  33  is mounted in a fluid-tight state in a holding recessing portion  24   c  that is provided in the downward extending portion  23  of the nozzle main body  21 . The third nozzle component  33  has a holding configuration that allows three-dimensional movement (rolling) relative to the nozzle main body  21  due to the shape of the third nozzle component  33  itself. That is, the orientation of the third nozzle component  33  can be changed. That is, the spray direction of the washer fluid W can be changed. The third nozzle component  33  has a spray opening  33   a  in a center portion (see  FIG.  6   ). The spray opening  33   a  has a circular shape. 
     In addition, as shown in  FIG.  1    and  FIG.  2   , a spray of the washer fluid W in a third spray mode A 3  that is oriented downward at an angle towards the rear end side of the wiper blade  12  is emitted from the spray opening  33   a  of the third nozzle component  33 . The third spray mode A 3  is a spray mode that has linear directionality (simply referred to as a linear spray). The third spray mode A 3  is set such that a landing position of the washer fluid W from the spray opening  33   a  is arrayed in the longitudinal direction so as to follow the landing positions of the second spray mode A 2  in the longitudinal direction of the wiper blade  12 , and the washer fluid W is supplied to the wiped surface WSa that lies in a position of approximately one-fourth a length of the wiper blade  12  in the longitudinal direction from the rear end portion  12   b . As indicated by broken-line arrows Wx in  FIG.  1   , the orientation of the spray of the spray opening  32   f   1  in the above-described second spray mode A 2  is set closer to the rear end side. Thus, the landing of the washer fluid W can be set based on an assumption that the washer fluid W lands further towards the rear end side in the longitudinal direction of the wiper blade  12  in the third spray mode A 3 . Consequently, for example, the supply of the washer fluid W in the third spray mode A 3  that is oriented towards the rear end portion  12   b  of the wiper blade  12  during high-speed travel of the vehicle can be effectively performed. 
     Supply of the Washer Fluid W to the First to Third Spraying Portions N 1  to N 3   
     As shown in  FIG.  2    to  FIG.  4    and the like, an introduction cylinder portion  25  that protrudes towards the rear end portion  12   b  of the wiper blade  12  is provided on a lower side of the mounting portion  22  of the nozzle main body  21 . The introduction cylinder portion  25  protrudes towards the base-end-portion side of the wiper arm  11 . The introduction cylinder portion  25  is connected to a feeding hose (not shown) that is routed along the wiper arm  11  and is provided to receive the washer fluid W that is fed from the vehicle-body side. An introduction flow path  26   a  on an inner side of the introduction cylinder portion  25  of the nozzle main body  21  extends to a center portion in the lateral direction inside the nozzle main body  21  and, at the end, communicates with a center flow path  26   b  that extends in a substantially orthogonal direction on a front side. The center flow path  26   b  communicates with a downward flow path  26   c  that extends downward within the downward extending portion  23  on the front side of the nozzle main body  21 . 
     The downward flow path  26   c  communicates with the introduction flow path  32   b  of the second nozzle component  32  that is held in the holding recessing portion  24   b . From one side in the lateral direction of the downward flow path  26   c , a branching flow path  26   d  extends downward at an angle towards the holding recessing portion  24   a  that holds the first nozzle component  31 . A lower end portion of the branching flow path  26   d  communicates with the introduction flow path  31   c  (see  FIG.  9   ) of the first nozzle component  31  that is held in the holding recessing portion  24   a . In addition, from the other side in the lateral direction of the downward flow path  26   c , a branching flow path  26   e  extends downward at an angle towards the holding recessing portion  24   c  that holds the third nozzle component  33 . A lower end portion of the branching flow path  26   e  communicates with the spray opening  33   a  of the third nozzle component  33  that is held in the holding recessing portion  24   c . 
     Then, the washer fluid W that is fed into the introduction cylinder portion  25  flows through the introduction flow path  26   a , the center flow path  26   b , the downward flow path  26   c . The washer fluid W then branches out in three directions that are the downward flow path  26   c  itself and the two branching flow paths  26   d  and  26   e . The washer fluid W that advances from the branching flow path  26   d  to the introduction flow path  31   c  of the first nozzle component  31  becomes the film-like spray that is the first spray mode A 1  from the spray opening  31   d . The film-like spray is emitted onto the wiped surface WSa near the tip end portion  12   a  of the wiper blade  12  (see  FIG.  1   ). 
     In addition, the washer fluid W that advances from the downward flow path  26   c  to the introduction flow path  32   b  of the second nozzle component  32  becomes the four linear sprays that are the second spray mode A 2  from the spray openings  32   c   1  to  32   f   1 , through the four spray flow paths  32   c  to  32   f . Each linear spray is emitted onto the wiped surface WSa near the center portion of the wiper blade  12  (see  FIG.  1   ). Furthermore, the washer fluid W that advances from the branching flow path  26   e  to the third nozzle component  33  becomes the single linear spray that is the third spray mode A 3  from the spray opening  33   a . The single linear spray is emitted onto the wiped surface WSa near the rear end portion  12   b  of the wiper blade  12  (see  FIG.  1   ). 
     Regarding the sprays described above, a flow-path cross-sectional area S 1  of the branching flow path  26   d  that sends the washer fluid W for the film-like spray in the first spray mode A 1  is greater than a flow-path cross-sectional area S 2  of the branching flow path  26   e  that sends the washer fluid W for the linear spray in the third spray mode A 3 . The film-like spray in the first spray mode A 1  requires a greater flow amount per unit time of the washer fluid W than the linear spray in the third spray mode A 3 . Therefore, the flow-path cross-sectional areas S 1  and S 2  are set to enable a favorable film-like spray to be emitted. 
     Workings According to the Present Embodiment 
     Workings according to the present embodiment will be described. 
     The vehicle windshield wiper  10  according to the present embodiment supplies the washer fluid W by spraying onto the wiped surface WSa in the first to third spray modes A 1  to A 3 , from the first to third spraying portions N 1  to N 3  of the washer nozzle  20 , based on the washer fluid W being fed from the vehicle-body side. The sprays of the washer fluid W from the first to third spraying portions N 1  to N 3  are emitted on one side in the transverse direction of the wiper blade  12 . The film-like spray in the first spray mode A 1  is emitted downward at an angle towards the tip end side of the wiper blade  12 . The four linear sprays in the second spray mode A 2  are emitted downward at the center. The single linear spray in the third spray mode A 3  is emitted downward at an angle towards the rear end side. 
     Here, during the process of the wiping operation of the vehicle windshield wiper  10 , the wiper blade  12  changes attitude from that in which the longitudinal direction of the wiper blade  12  runs along the lateral direction of the vehicle to that in which the longitudinal direction runs along the longitudinal direction of the vehicle. When the longitudinal direction of the wiper blade  12  runs along the longitudinal direction of the vehicle, as shown in  FIG.  1   , vehicle travel wind X such as that which moves from the rear end portion  12   b  of the wiper blade  12  to the tip end portion  12   a  acts on the periphery of the wiper blade  12 . 
     In a state such as this, if a linear spray is used in the first spray mode A 1 , the propulsion force of the washer fluid W by this linear spray is strong and the wiper fluid W lands in a localized manner. In addition, because an angle of incidence of the washer fluid W relative to the wiped surface WSa is small, the washer fluid W after landing on the wiped surface WSa widely spreads towards the tip end side in the spray direction due to the propulsion force. The washer fluid W tends to be supplied beyond the tip end portion  12   a  of the wiper blade  12 . Furthermore, the spreading of the washer fluid W is further facilitated due to effects of the vehicle travel wind X, as well, during high-speed travel, and the area in which the washer fluid W is supplied is unstable. The washer fluid W is supplied beyond the longitudinal direction range of the wiper blade  12 . 
     In contrast, according to the present embodiment in which the film-like spray that has a film-like spread is used in the first spray mode A 1  that sprays towards the tip end side of the wiper blade  12 , the washer fluid W that is sprayed so as to spread in a film like manner from the first spraying portion N 1  has a weaker propulsion force than the linear spray. Therefore, the washer fluid W of the film-like spray after landing on the wiped surface WSa has a smaller spread in the spraying direction resulting from the propulsion force, compared to that of the linear spray. The washer fluid W can be suppressed from being supplied beyond the tip end portion  12   a  of the wiper blade  12  on the tip end side in the longitudinal direction of the film-like spray. 
     In addition, unlike when the washer fluid W is supplied within the longitudinal direction range of the wiper blade  12 , or specifically, in the longitudinal direction with the expectation of the washer fluid W spreading upon landing, the film-like spray can enable the washer fluid W to land on the wiped surface WSa continuously in an area from near the center in the longitudinal direction to the tip end side. A supply of washer fluid W that is substantially uniform in the longitudinal direction can be achieved. That is, because, unlike the linear spray, a large amount of washer fluid W is not supplied in a localized manner on the tip end side, an amount of washer fluid W that is spread in the longitudinal direction of the wiper blade  12  is small even when tailwind from the vehicle travel wind X is received. 
     Consequently, the area in which the washer fluid W is supplied is stabilized and the washer fluid W is suppressed from being supplied beyond the longitudinal direction range of the wiper blade  12 . Therefore, the washer fluid W can be favorably supplied without waste. Here, the film-like spray can be considered to be a continuous spray of which the angle of incidence relative to the wiped surface WSa gradually increases from the tip end side in the longitudinal direction of the wiper blade  12  towards the center portion. The washer fluid W can be further suppressed from spreading after landing due to the propulsion force near the center in the longitudinal direction. 
     Here, in a vehicle that is designed for cold weather, the wiper blade  12  is replaced with a wiper blade that is taller compared to standard specifications. In this case, a height of the washer nozzle  20  from the wiped surface WSa (that is, a height of each spray opening) is higher than that in the standard specifications. As a result, the washer fluid W being supplied beyond the tip end portion  12   a  of the wiper blade  12 , that is, a so-called spray out easily occurs. However, because the film-like spray has a weak propulsion force, changes in the landing position of the washer fluid W relative to the changes in the height of the washer nozzle  20  can be suppressed. The washer fluid W can be more easily supplied to remain within the tip end portion  12   a  of the wiper blade  12 . 
     In addition, the spray of the washer fluid W that is oriented downward at an angle towards the rear end side of the wiper blade  12  is a spray in a headwind that is oriented in a direction opposite the vehicle travel wind X. Therefore, the spray is easily pushed back by the vehicle travel wind X. Taking this into consideration, according to the present embodiment, the linear spray that has directionality and in which the propulsion force of the washer fluid W is strong is used in the third spray mode A 3 . As a result, an influence caused by the vehicle travel wind X that becomes the headwind can be suppressed. Consequently, the landing position of the washer fluid W on the wiped surface WSa by the linear spray is not significantly shifted from an expected landing position, and the washer fluid W can be favorably supplied. 
     Here, because the washer nozzle  20  according to the present embodiment is such that the orientation of the first nozzle component  31  that generates the film-like spray can be three-dimensionally changed, the spray direction can be adjusted to a desired direction. In addition, in a similar manner, regarding the third nozzle component  33  that generates the linear spray, the spray direction can be adjusted by the orientation of the third nozzle component  33  being changed. Consequently, individual differences, changes in specifications, and the like of the wiper blade  12  can be easily addressed. 
     Furthermore, the second spraying portion N 2  of the washer nozzle  20  according to the present embodiment is configured such that the second nozzle component  32  is mounted in the holding recessing portion  24   b  that is provided in the downward extending portion  23  of the nozzle main body  21 . Therefore, the second nozzle components  32  that have the spray flow paths  32   c  to  32   f  and the spray openings  32   c   1  to  32   f   1  that differ in quantity and orientation are mounted in the holding recessing portion  24   b . Thus, the second spray nozzle portions N 2  of differing settings can be easily configured while sharing the same nozzle main body  21 . 
     Effects According to the Present Embodiment 
     Effects according to the present embodiment will be described. 
     The washer nozzle  20  that is included in the vehicle windshield wiper  10  according to the present embodiment includes the first spraying portion N 1  that serves as a film-like spraying portion for the spray of the washer fluid W that is oriented downward at an angle towards the tip end side of the wiper blade  12 . From the first spraying portion N 1 , the spray of the washer fluid W that has a film-like spread in the longitudinal direction of the wiper blade  12  is emitted. The washer fluid W that is sprayed so as to spread in a film-like manner from the first spraying portion N 1  can be made to continuously land on the wiped surface WSa within the longitudinal direction range of the wiper blade  12 . For example, compared to intermittent landing such as that when sprays that have linear directionality are emitted at multiple points (from a plurality of spray openings), the washer fluid W that is substantially uniformly continuous in the longitudinal direction can be supplied. 
     In addition, the washer fluid W that is sprayed so as to spread in a film-like manner from the first spraying portion N 1  has a weaker propulsion force compared to the spray that has linear directionality. Therefore, the washer fluid W after landing on the wiped surface W also has a smaller spread in the spray direction resulting from the propulsion force. Therefore, even when the tip end side of the film-like spray is sprayed near the tip end portion  12   a  of the wiper blade  12 , the washer fluid W can be suppressed from spreading due to the propulsion force after landing. In this manner, according to the present embodiment, the sprayed washer fluid W can be favorably supplied to the wiped surface WSa within the longitudinal direction range of the wiper blade  12 , without waste. 
     The washer nozzle  20  according to the present embodiment further includes the third spraying portion N 3  as a linear spraying portion for the spray of the washer fluid W that is oriented downward at an angle towards the rear end side of the wiper blade  12 . From the third spraying portion N 3 , the spray of the washer fluid W that has linear directionality, unlike the spray that has the film-like spread of the first spray portion N 1 , is emitted. The washer fluid W that is linearly sprayed from the third spraying portion N 3  has a strong propulsion force. Even when the washer fluid W is sprayed towards the rear end side that is a headwind state in which the washer fluid W is easily pushed back by the vehicle travel wind X, an influence caused by the vehicle travel wind X can be suppressed. Consequently, the landing of the washer fluid W onto the wiped surface WSa by this spray is not significantly shifted from the expected landing, and the washer fluid W can be favorably supplied. 
     The washer nozzle  20  includes the branching flow paths  26   d  and  26   e  that branch out to the first and third spraying portions N 1  and N 3  from the downward flow path  26   c , as internal flow paths through which the washer fluid W flows. The flow-path cross-sectional area S 1  of the branching flow path  26   d  that branches out towards the first spraying portion N 1  is set to be greater than the flow-path cross-sectional area S 2  of the branching flow path  26   e  that branches out towards the third spraying portion N 3 . That is, the film-like spray of the first spraying portion N 1  requires a greater flow amount (fluid amount) per unit time of the washer fluid W than the linear spray of the third spraying portion N 3 . Consequently, the flow-path cross-sectional areas S 1  and S 2  are set as described above. Thus, a favorable film-like spray can be emitted. 
     In the first spraying portion N 1  that performs the film-like spray, the spray opening  31   d  has an opening shape that is elongated in one direction. In addition, the throttle portion 3 1f is provided in the center portion in the longitudinal direction of the spray opening  31   d . The shape of the throttle portion  31   f  is changed. As a result, a film-like spray in which the spray momentum of the washer fluid W is adjusted between both end portions and the center portion can be emitted. 
     In the first spraying portion N 1  that emits the film-like spray, the pair of guide wall portions  31   e  are provided in a protruding manner on both sides in the transverse direction of the spray opening  31   d  that has an opening shape that is elongated in one direction. As a result, the film-like spray of which the spread of the washer fluid W in the transverse direction is regulated can be emitted. 
     The washer nozzle  20  is configured such that the nozzle main body  21  and the first to third nozzle components  31  to  33  are fabricated as separate components, and the nozzle components  31  to  33  are integrally incorporated into the nozzle main body  21 . The nozzle main body  21  and the first to third nozzle components  31  to  33  are separate components. Thus, the nozzle main body  21  and the first to third nozzle components  31  to  33  can be easily fabricated. In addition, the first and third nozzle components  31  and  33  are incorporated to be held in such a manner as to allow rolling relative to the nozzle main body  21 , and thus the spray directions of the washer fluid W can be adjusted. 
     The flow paths  32   b  to  32   f  of the washer fluid W that are fabricated in the second nozzle component  32  are each formed into a groove shape. Then, the second nozzle component  32  is incorporated into the nozzle main body  21 , and thus the open portions of the groove shapes are sealed and configured as the flow paths  32   b  to  32   f  of which the peripheries are closed. Consequently, the flow paths  32   b  to  32   f  and the spray openings  32   c   1  to  32   f   1  are grooves rather than holes, and thus a mold structure for resin molding can be easily fabricated without use of an additional mold, such as a slide mold. 
     Modifications 
     The present embodiment can be modified in the following manner. The present embodiment and modifications below can be combined as long as technical contradictions do not occur. 
     The film-like spray is set as the spray that is oriented downward at an angle towards the tip end side of the wiper blade  12 . The four linear sprays are set as the spray that is oriented downward at the center. The single linear spray is set as the spray that is oriented downward at an angle towards the rear end side. However, this combination of spray modes is merely an example and may be modified as appropriate. In addition, the number of linear sprays may also be modified as appropriate. 
     The washer nozzle  20  is configured such that the first to third nozzle components  31  to  33  are incorporated into the nozzle main body  21  and the first to third nozzle portions N 1  to N 3  are configured. However, this configuration is merely an example. A number of spray portions, a number of components, and the like may be modified as appropriate. 
     The washer nozzle  20  is mounted in the wiper arm  11 . However, the washer nozzle  20  may be mounted in the wiper blade  12 . The washer nozzle  20  is mounted in a detachable manner. However, the washer nozzle  20  may be integrally provided in the vehicle windshield wiper  10 . 
     The configuration of the wiper blade  12  that is described in particular detail in the configuration of the vehicle windshield wiper  10  is merely an example and may be modified as appropriate. For example, the wiper blade  12  may be changed to a wiper blade that is configured using a lever assembly that has a tournament structure, a wiper blade that is configured by a single lever, or a lever-less wiper blade.