Patent Publication Number: US-2022212634-A1

Title: Viewing device for vehicle

Description:
TECHNICAL FIELD 
     The present disclosure relates to a viewing device for a vehicle. 
     BACKGROUND ART 
     An onboard optical sensor washing device is disclosed in Japanese Patent Application Laid-Open (JP-A) No. 2018-34646 for example. In this device, a movable nozzle is made able to project/retract. When an operation switch is operated, the movable nozzle advances, and a mixed fluid of gas and liquid is jetted toward a lens surface from a jetting port at the distal end of the movable nozzle. Due thereto, dried mud and the like that are stuck on the lens surface are washed-off, and the lens surface is washed. 
     SUMMARY OF INVENTION 
     Technical Problem 
     By the way, there is a structure in which an opening portion is formed so as to penetrate a panel member of a vehicle at the region where a movable nozzle such as that described above is projected/retracted, and a cover covers this opening portion so as to open/close. Such a structure is structured such that, for example, the cover is displaced together with the movable nozzle, and the movable nozzle can be covered by the cover at the time when the cover is closed. 
     However, in such a structure, when the movable nozzle projects-out at the time of washing the main surface side of a viewing assistance portion such as a camera or a mirror or the like for example, the cover also is displaced together with the movable nozzle, and therefore, there is room for improvement with regard to the point of preventing or suppressing the cover being imaged by the viewing assistance portion. 
     Further, in the case of employing a structure that simply moves a nozzle, whose intermediate portion is bent such that the nozzle is L-shaped or the like for example, such that the nozzle advances/withdraws, the space at the periphery of the nozzle storage position must be made to be large in order for the distal end portion side of the nozzle to not interfere with peripheral structures at the time when the nozzle moves so as to advance/withdraw. Namely, in a case in which an attempt is made to avoid interference between the distal end portion side of the nozzle and peripheral structures at further toward the nozzle advancing direction side than the nozzle storage position, the nozzle storage position itself is shifted, but, in such a structure, the space at the periphery of the nozzle storage position must be made to be large. However, there are cases in which it difficult to make the space, which is needed to accommodate and move the nozzle, large. 
     The present disclosure provides a viewing device for a vehicle that can prevent or suppress a cover being imaged by a viewing assistance portion at the time of cleaning the main surface side of the viewing assistance portion. 
     Further, the present disclosure provides a viewing device for a vehicle that can keep the space needed for housing and moving a nozzle small, even in a case in which an intermediate portion of the nozzle is bent. 
     Solution to Problem 
     A viewing device for a vehicle of a first aspect of the present disclosure comprises: a viewing assistance portion provided at a vehicle and configured to assist viewing by an occupant of the vehicle; a panel member configuring a portion of a housing body that houses the viewing assistance portion, and in which an opening portion for nozzle projection/retraction is formed so as to penetrate at a peripheral portion of a main surface side of the viewing assistance portion; a nozzle that is housed in the housing body and is displaced so as to project/retract from the opening portion, and that, in a state of projecting-out from the opening portion, jets washing liquid from a jetting port at a distal end portion side of the nozzle toward a main surface side of the viewing assistance portion; a cover that is displaced between a closing position at which the opening portion is closed and an opening position that is provided at a side that is farther from a main surface of the viewing assistance portion than the closing position, to perform opening and closing; and a mechanism that, using a force of the nozzle being displaced, displaces the cover in a different direction from a direction in which the nozzle is displaced so as to open/close the cover. 
     In accordance with the viewing device for a vehicle of the first aspect of the present disclosure, viewing by an occupant of a vehicle is assisted by the viewing assistance portion. Further, an opening portion is formed in the panel member so as to penetrate; at a peripheral portion of the main surface side of the viewing assistance portion, and the nozzle can project/retract from the opening portion. In a state of projecting-out from the opening portion, the nozzle jets washing liquid out from a jetting port at a distal end portion side of the nozzle toward the main surface side of the viewing assistance portion. Here, the cover can open/close between a closing position at which the opening portion, and an opening position that is provided at a side that is farther from the main surface of the viewing assistance portion than the closing position, to perform opening and closing. The viewing device for a vehicle has a mechanism that, using the force of the nozzle being displaced, displaces the cover in a different direction from the direction in which the nozzle is displaced so as to open/close the cover. In this way, in a case of opening the opening portion, the cover is displaced to the side far from the main surface of the viewing assistance portion, and in a different direction from the direction in which the nozzle is displaced. Therefore, the cover being imaged by the viewing assistance portion is prevented or suppressed, while the degrees of freedom in designing the displacing of the cover are ensured. 
     In a viewing device for a vehicle of a second aspect of the present disclosure, in the viewing device for a vehicle of the first aspect of the present disclosure, the mechanism is an interlocking mechanism configured to slide the cover from the closing position to the opening position by using force of the nozzle advancing to a position projecting out from the opening portion. 
     In accordance with the viewing device for a vehicle of the second aspect of the present disclosure, the interlocking mechanism slides the cover from the closing position to the opening position, by using the force of the nozzle advancing to the position projecting out from the opening portion. In this way, in a case of opening the opening portion, the cover is slid to the side far from the main surface of the viewing assistance portion, and therefore, the cover being imaged by the viewing assistance portion is prevented or suppressed. 
     In a viewing device for a vehicle of a third aspect of the present disclosure, in the viewing device for a vehicle of the second aspect of the present disclosure, the interlocking mechanism connects the nozzle and the cover, and also has a function of sliding the cover from the opening position to the closing position by using force of the nozzle, which is in a state of projecting-out from the opening portion, retracting. 
     In accordance with the viewing device for a vehicle of the third aspect of the present disclosure, the interlocking mechanism connects the nozzle and the cover. In a case in which nozzle, which is in a state of projecting-out from the opening portion, withdraws, the interlocking mechanism, by using this force, can also slide the cover from the opening position to the closing position. Namely, the interlocking mechanism can open/close the cover by using the motive power that projects/retracts the nozzle. 
     In a viewing device for a vehicle of a fourth aspect of the present disclosure, the viewing device for a vehicle of the second aspect of the present disclosure comprises an urging member that urges the cover in a direction of the closing position. 
     In accordance with the viewing device for a vehicle of the fourth aspect of the present disclosure, the cover is urged in the direction of the closing position by the urging member. Therefore, when the nozzle, which is in a state of projecting-out from the opening portion, withdraws, the cover is closed by the urging force of the urging member. 
     In a viewing device for a vehicle of a fifth aspect of the present disclosure, in the viewing device for a vehicle of the third aspect of the present disclosure, the interlocking mechanism comprises: a shaft portion provided at the cover; and a guiding portion provided at the nozzle, and guiding the shaft portion such that the cover slides and is opened/closed in accordance with movement of the nozzle in a projecting/retracting direction. 
     In accordance with the viewing device for a vehicle of the fifth aspect of the present disclosure, the guiding portion that is provided at the nozzle guides the shaft portion that is provided at the cover, such that the cover slides and is opened/closed in accordance with the movement of the nozzle in the projecting/retracting direction. Accordingly, without making the structure complex, the cover can be opened/closed by using the motive power that that projects/retracts the nozzle. 
     In a viewing device for a vehicle of a sixth aspect of the present disclosure, in the viewing device for a vehicle of the third aspect of the present disclosure, the interlocking mechanism comprises: a shaft portion provided at the nozzle; and a guiding portion provided at the cover, and guiding the shaft portion, and is configured to slide and open/close the cover by receiving load from the shaft portion in accordance with movement of the nozzle in a projecting/retracting direction. 
     In accordance with the viewing device for a vehicle of the sixth aspect of the present disclosure, the guiding portion that is provided at the cover guides the shaft portion that is provided at the nozzle, and slides and opens/closes the cover by receiving load from the shaft portion in accordance with the movement of the nozzle in the projecting/retracting direction. Accordingly, without making the structure complex, the cover can be opened/closed by using the motive power that projects/retracts the nozzle. 
     In a viewing device for a vehicle of a seventh aspect of the present disclosure, in the viewing device for a vehicle of the first aspect of the present disclosure, the mechanism is a rotating mechanism configured to rotate and displace the nozzle around an axis of a proximal portion, a bent portion is formed at an intermediate portion of the nozzle, and the nozzle is disposed such that the jetting port faces the main surface side of the viewing assistance portion as a result of the nozzle being rotated and displaced, by the rotating mechanism, around the axis of the proximal portion that is further toward a proximal end side than the bent portion, and the cover is rotated and displaced from the closing position to the opening position by the rotating mechanism by using a force of the nozzle being rotated and displaced. 
     In accordance with the viewing device for a vehicle of the seventh aspect of the present disclosure, a bent portion is formed at an intermediate portion of the nozzle, and the nozzle is rotated and displaced around the axis of the proximal portion by the rotating mechanism. The jetting port is disposed so as to face the main surface side of the viewing assistance portion, as a result of the nozzle being rotated and displaced around the axis of the proximal portion, which is further toward the proximal end side than the bent portion, by the rotating mechanism. Due thereto, for example, even in a case in which it is desired to employ peripheral structures that are interfered with by a portion of the distal end portion side of the nozzle when the nozzle is moved so as to merely advance/withdraw, the nozzle can be projected-out from the opening portion while avoiding peripheral structural portions that will interfere in this way. 
     In a viewing device for a vehicle of an eighth aspect of the present disclosure, in the viewing device for a vehicle of the seventh aspect of the present disclosure, an advancing/withdrawing mechanism that moves the nozzle so as to advance/withdraw along an axial direction of the proximal portion. 
     In accordance with the viewing device for a vehicle of the eighth aspect of the present disclosure, the nozzle is moved so as to advance/withdraw along the axial direction of the proximal portion by the advancing/withdrawing mechanism. Due thereto, the number of variations of the locus of movement of the nozzle can be increased, and therefore, the number of variations for avoiding interference between the nozzle and peripheral structures can be increased. 
     In a viewing device for a vehicle of a ninth aspect of the present disclosure, in the viewing device for a vehicle of the eighth aspect of the present disclosure, the rotating mechanism is an advancing/withdrawing rotating mechanism that also serves as the advancing/withdrawing mechanism and configured to rotate and displace the nozzle around the axis of the proximal portion while moving the nozzle to advance/withdraw along the axial direction of the proximal portion. 
     In accordance with the viewing device for a vehicle of the ninth aspect of the present disclosure, the rotating mechanism is an advancing/withdrawing rotating mechanism that also serves as an advancing/withdrawing mechanism Due to this advancing/withdrawing rotating mechanism, the nozzle is rotated and displaced around the axis of the proximal portion thereof while moving so as to advance/withdraw along the axial direction of the proximal portion. Due thereto, a new variation of the locus of movement of the nozzle can be provided, and a new variation for avoiding interference between the nozzle and peripheral structures can be provided. 
     In a viewing device for a vehicle of a tenth aspect of the present disclosure, in the viewing device for a vehicle of the eighth aspect of the present disclosure, the advancing/withdrawing mechanism comprises a first mechanism that moves the nozzle so as to advance/withdraw along the axial direction of the proximal portion in a state in which a posture at a stored position is maintained, between the stored position at which the nozzle is stored and an intermediate reference position, which is a position at which the nozzle is advanced further than the stored position and is a position that is set in advance, and a second mechanism that also serves as the rotating mechanism configured to rotate and displace the nozzle around the axis of the proximal portion while moving the nozzle to advance/withdraw along the axial direction of the proximal portion, between the intermediate reference position and a jetting position that is a position at which the nozzle jets-out washing liquid. 
     In accordance with the viewing device for a vehicle of the tenth aspect of the present disclosure, a first mechanism and a second mechanism are provided as the advancing/withdrawing mechanism. The first mechanism moves the nozzle to advance/withdraw along the axial direction of the proximal portion in a state in which the posture of the nozzle at the stored position is maintained, between the stored position and the intermediate reference position. Further, the second mechanism also serves as the rotating mechanism, and rotates and displaces the nozzle around the axis of the proximal portion while moving the nozzle to advance/withdraw along the axial direction of the proximal portion, between the intermediate reference position and the jetting position. Due thereto, a new variation of the locus of movement of the nozzle can be provided, and a new variation for avoiding interference between the nozzle and peripheral structures can be provided. 
     In a viewing device for a vehicle of an eleventh aspect of the present disclosure, in the viewing device for a vehicle of the ninth aspect of the present disclosure, the advancing/withdrawing rotating mechanism comprises: a nozzle case that accommodates a portion of the nozzle and to which washing liquid is supplied; an urging member that urges the nozzle in a direction of the stored position; and a screw structure comprising screw portions provided at an outer peripheral portion of the proximal portion of the nozzle and an inner peripheral portion of the nozzle case respectively, with the screw portions screwed together. 
     In accordance with the viewing device for a vehicle of the eleventh aspect of the present disclosure, the nozzle is urged in the direction of the stored position by the urging member, in a state in which a portion of the nozzle is accommodated in the nozzle case, and washing liquid is supplied to the nozzle case. Here, screw portions are provided at the outer peripheral portion of the proximal portion of the nozzle and the inner peripheral portion of the nozzle case, respectively, and this is a screw structure that screws these together. As a result, when washing liquid is supplied to the nozzle case, and the nozzle is pushed against the urging force of the urging member, the nozzle is rotated and displaced around the axis of the proximal portion thereof while advancing along the axial direction of the proximal portion. Further, when the supply of the washing liquid to the nozzle case is stopped, the nozzle, which receives the urging force of the urging member, is rotated and displaced around the axis of the proximal portion thereof while withdrawing along the axial direction of the proximal portion, and returns to the stored position. Because the nozzle is displaced by the screw structure while the washing liquid is used as motive power, and further, the urging force of the urging member is utilized in this way, an increase in size of the structural portions that displace the nozzle can be suppressed, and the space for housing such structural portions can be kept small. 
     in a viewing device for a vehicle of a twelfth aspect of the present disclosure, in the viewing device for a vehicle of the tenth aspect of the present disclosure, the first mechanism comprises: a nozzle case that accommodates a portion of the nozzle and to which washing liquid is supplied; an urging member that urges the nozzle in a direction of the stored position; a shaft portion that stands erect from an outer peripheral surface of the proximal portion of the nozzle; and a first guiding portion that is formed at the nozzle case, rectilinearly along the axial direction of the proximal portion of the nozzle, and that guides the shaft portion, and the second mechanism comprises: the nozzle case; the urging member; the shaft portion; and a. second guiding portion that is formed at the nozzle case continuously with a distal end of the first guiding portion and so as to form a portion of a spiral, and that guides the shaft portion. 
     In accordance with the viewing device for a vehicle of the twelfth aspect of the present disclosure, the nozzle is urged in the direction of the stored position by the urging member, in a state in which a portion of the nozzle is accommodated in the nozzle case, and washing liquid is supplied to the nozzle case. The shaft portion, which stands erect from the outer peripheral surface of the nozzle, is guided along the axial direction of the proximal portion of the nozzle by the first guiding portion that is formed at the nozzle case. Further, the shaft portion is guided in the guiding direction, which is provided so as to form a portion of a spiral, by the second guiding portion that is formed continuously with the distal end of the first guiding portion at the nozzle case. 
     Due thereto, when washing liquid is supplied to the nozzle case, and the nozzle is pushed against the urging force of the urging member, the nozzle advances along the axial direction of the proximal portion of the nozzle while the posture thereof at the time of storage is maintained, and thereafter, while advancing along the axial direction of the proximal portion, is rotated and displaced around the axis of the proximal portion and is disposed at the jetting position. Further, when the supply of the washing liquid to the nozzle case is stopped, the nozzle, which receives the urging force of the urging member, is rotated and displaced around the axis of the proximal portion thereof while withdrawing along the axial direction of the proximal portion, and thereafter, withdraws along the axial direction of the proximal portion and is disposed at the stored position. The nozzle is displaced by using the shaft portion, the first guiding portion and the second guiding portion while the washing liquid is used as motive power, and further, the urging force of the urging member is utilized in this way. Therefore, an increase in size of the structural portions that displace the nozzle can be suppressed, and the space for housing such structural portions can be kept small. 
     In a viewing device for a vehicle of a thirteenth aspect of the present disclosure, in the viewing device for a vehicle of the seventh aspect of the present disclosure, the rotating mechanism comprises: a first enlarged diameter portion that is tubular, and whose diameter is enlarged via a first step portion from an axial direction intermediate portion of the proximal portion of the nozzle, and that extends at a proximal end side of the nozzle; a tubular body having an inserted tube portion that is inserted in the first enlarged diameter portion of the nozzle, and a second enlarged diameter portion that is tubular, and whose diameter is enlarged via a second step portion from an end portion at an opposite side from an insertion distal end side at the inserted tube portion, and that extends at an opposite side from an outer peripheral space side of the inserted tube portion; a nozzle case to which washing liquid is supplied and that has a case tube portion that is formed in a tubular shape, and houses the first step portion, the first enlarged diameter portion and the tubular body, and that is configured such that an inner peripheral surface thereof contacts an outer peripheral surface of the second enlarged diameter portion, that has a distal end side wall portion that extends toward a radial direction inner side of the case tube portion from a portion of a distal end side of the case tube portion, and that is disposed in a state of being contacted by the first step portion; a restricting portion that restricts movement of the first enlarged diameter portion toward an opposite side from the distal end side wall portion; an urging member that urges the tubular body in a direction of decreasing an inserted amount of the inserted tube portion in the first enlarged diameter portion, and that suppresses rotation of the tubular body around its own axis; a shaft portion that stands erect from an outer peripheral surface of a portion of a distal end portion side of the inserted tube portion; and a guiding portion that is formed at the first enlarged diameter portion of the nozzle so as to form a portion of a spiral, and that guides the shaft portion, and that is configured to, in a case of being pushed in an axial direction of the proximal portion by the shaft portion, rotate and displace the first enlarged diameter portion around the axis of the proximal portion. 
     In accordance with the viewing device for a vehicle of the thirteenth aspect of the present disclosure, the first enlarged diameter portion, which is tubular and whose diameter is enlarged via the first step portion from an axial direction intermediate portion of the proximal portion of the nozzle, extends at the proximal end side of the nozzle. Further, the first step portion of the nozzle is disposed in a state of contacting the distal end side wall portion of the nozzle case, and the restricting portion restricts movement of the first enlarged diameter portion toward the opposite side from the distal end side wall portion side. Accordingly, movement of the first step portion and the first enlarged diameter portion in a direction running along the axial direction of the proximal portion of the nozzle is impossible, and rotation and displacement around the axis of the proximal portion are possible. 
     Further, the inserted tube portion of the tubular body is inserted in the first enlarged diameter portion of the nozzle. At the tubular body, the second enlarged diameter portion, which is tubular and whose diameter is enlarged via the second step portion from the end portion at the opposite side from the inserted distal end side at the inserted tube portion, extends at the opposite side from the outer peripheral space side of the inserted tube portion. Because the outer peripheral surface of the second enlarged diameter portion of the tubular body contacts the inner peripheral surface of the case tube portion of the nozzle case, in a case in which the tubular body advances along the axial direction thereof due to the liquid pressure of the washing liquid, the tubular body can move stably. Further, the tubular body is urged by the urging member in the direction of decreasing the inserted amount of the inserted tube portion in the first enlarged diameter portion, and rotation around the axis of the tubular body is suppressed by the urging member. 
     Moreover, the shaft portion stands erect from the outer peripheral surface of the portion of the distal end portion side of the inserted tube portion. The guiding portion is configured to rotate and displace the first enlarged diameter portion around the axis of the proximal portion, in a case in which the guiding portion, which is formed at the first enlarged diameter portion of the nozzle so as to form a portion of a spiral, is pushed by the shaft portion. Due thereto, when washing liquid is supplied to the nozzle case, and the tubular body advances against the urging force of the urging member, the shaft portion of the tubular body pushes the guiding portion of the nozzle, and the nozzle is rotated and displaced around the axis of the proximal portion thereof without the position in the axial direction of the proximal portion changing. In this way, the space at the periphery of the stored position of the nozzle can be made to be small due to the nozzle not stroking in the axial direction of the proximal portion thereof. Further, when supply of washing liquid to the nozzle case is stopped, the tubular body that receives the urging force of the urging member withdraws. Therefore, the shaft portion of the tubular body pushes the guiding portion of the nozzle, and the nozzle is rotated and displaced around the axis of the proximal portion thereof without the position in the axial direction of the proximal portion changing, and the nozzle returns to the stored position. 
     Advantageous Effects of Invention 
     As described above, in accordance with the viewing device for a vehicle of the present disclosure, there is the excellent effect that a cover being imaged by a viewing assistance portion at the time of cleaning the main surface side of the viewing assistance portion can be prevented or suppressed. 
     Further, in accordance with the viewing device for a vehicle of the present disclosure, there is the excellent effect that, even in a case in which an intermediate portion of a nozzle is bent, the space needed for storing and moving the nozzle can be kept small. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1A  is a side view showing a portion of a vehicle, in which a viewing device for a vehicle relating to a first embodiment is installed, in a state of being seen from a vehicle lateral side. 
         FIG. 1B  is a plan view showing the viewing device for a vehicle of  FIG. 1A  and a peripheral portion thereof, in a state of being seen from a vehicle upper side. 
         FIG. 2A  is a cross-sectional view showing a non-operating state of a washing device of the viewing device for a vehicle relating to the first embodiment, in an enlarged manner in a cross-section along line  2 A- 2 A of  FIG. 1B ; 
         FIG. 2B  is a cross-sectional view showing an operating state of the washing device of  FIG. 2A ; 
         FIG. 3A  is an enlarged sectional view in which the state cut along line  3 A- 3 A of  FIG. 2A  is enlarged. 
         FIG. 3B  is an enlarged sectional view in which the state cut along line  3 B- 3 B of  FIG. 2A  is enlarged. 
         FIG. 4A  is a cross-sectional view showing a non-operating state of a washing device of a viewing device for a vehicle relating to a second embodiment, in a cross-section corresponding to  FIG. 2A . 
         FIG. 4B  is a cross-sectional view showing an operating state of the washing device of  FIG. 4A . 
         FIG. 5  is an enlarged sectional view in which the state cut along line  5 - 5  of  FIG. 4A  is enlarged. 
         FIG. 6A  is a cross-sectional view showing a non-operating state of a washing device of a viewing device for a vehicle relating to a third embodiment, in a cross-section corresponding to  FIG. 2A . 
         FIG. 6B  is a cross-sectional view showing an operating state of the washing device of  FIG. 6A . 
         FIG. 7A  is a side view showing a portion of a vehicle, in which a viewing device for a vehicle relating to fourth embodiment is installed, in a state of being seen from a vehicle lateral side. 
         FIG. 7B  is a plan view showing the viewing device for a vehicle of  FIG. 7A  and a peripheral portion thereof, in a state of being seen from a vehicle upper side. 
         FIG. 8A  is a cross-sectional view in which a non-operating state of a washing device of the viewing device for a vehicle relating to the fourth embodiment is shown in an enlarged manner in a cross-section along line  8 A- 8 A of  FIG. 7B . 
         FIG. 8B  is a cross-sectional view showing an operating state of the washing device of  FIG. 8A . 
         FIG. 9A  is a cross-sectional view showing a non-operating state of a washing device of a viewing device for a vehicle relating to a fifth embodiment, in a cross-section corresponding to  FIG. 8A . 
         FIG. 9B  is a cross-sectional view showing an operating state of the washing device of  FIG. 9A . 
         FIG. 10  is a cross-sectional view showing the state cut along line D-D of  FIG. 9A  in an enlarged manner. 
         FIG. 11A  is a cross-sectional view showing a non-operating state of a washing device of a viewing device for a vehicle relating to a sixth embodiment, in a cross-section corresponding to  FIG. 8A . 
         FIG. 11B  is a cross-sectional view showing an operating state of the washing device of  FIG. 11A . 
         FIG. 12  is an exploded perspective view showing, in an exploded manner, a nozzle unit of the washing device of  FIG. 11A , wherein illustration of a tension spring is omitted. 
         FIG. 13A  is a drawing showing, in an enlarged manner, the state seen from the direction of arrow  13 A of  FIG. 11A . 
         FIG. 13B  is a cross-sectional view showing the state cut along line  13 B- 13 B of  FIG. 11A  in an enlarged manner. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     First Embodiment 
     A viewing device for a vehicle relating to a first embodiment of the present disclosure is described by using  FIG. 1A  through  FIG. 3B . Note that arrow FR that is shown appropriately in these drawings indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow OUT indicates a vehicle transverse direction outer side. 
     A side view of a state in which a portion of a vehicle  100 , in which a viewing device  10  for a vehicle relating to the present embodiment is installed, is seen from a vehicle lateral side is shown in  FIG. 1A . A plan view of a state in which the viewing device  10  for a vehicle and a peripheral portion thereof are seen from the vehicle upper side is shown in  FIG. 1B . 
     As shown in  FIG. 1A , the viewing device  10  for a vehicle is, as an example, provided at the upper portion and vehicle rear side end portion of a fender panel  104  of a vehicle side portion  102 . As shown in  FIG. 1B , the viewing device  10  for a vehicle has a visor  12 . The visor  12  is made of resin, and the outer peripheral surface of the visor  12  structures the design surface of the viewing device  10  for a vehicle. The visor  12  is supported at the vehicle body side in a fixed state via a supporting mechanism (not shown) that is provided at the interior of the visor  12 . The vehicle rear side portion of the visor  12  is structured by a visor rim  14  that serves as a panel member. Further, the vehicle front side and upper side portion of the visor  12  is structured by an upper visor cover  16 , and the vehicle front side and lower side portion of the visor  12  is structured by a lower visor cover  18 . The visor  12  that is structured in this way houses a camera unit  20  in the interior thereof. 
     A cross-sectional view of a state in which the cross-section along line  2 A- 2 A of  FIG. 1B  is enlarged is shown in  FIG. 2A . This  FIG. 2A  shows a non-operating state of a washing device  40 , which is described later, of the viewing device  10  for a vehicle, and  FIG. 2B  shows an operating state of the washing device  40 . 
     As shown in  FIG. 2A , the camera unit  20  is structured to include a camera  22  that serves as a viewing assistance portion that assists viewing by an occupant of the vehicle. The camera  22  has, at the main surface side thereof, a lens  22 A, and this lens  22 A faces the vehicle rear side. The camera  22  is electrically connected to a control device (not shown) of the vehicle, and can capture images of the vehicle rear side by control of the control device. A monitor (not shown) is electrically connected to the control device, and the monitor can display the images captured by the camera  22 , by control of the control device. The monitor is set within the vehicle cabin, and, due to an occupant of the vehicle (in particular, the driver) viewing the image displayed on the monitor, viewing of the vehicle rear side by the vehicle occupant is assisted. 
     The portion, which is at the opposite side from the lens  22 A side, of the camera  22  is mounted to a first bracket  24  that is box-shaped. The first bracket  24  is fixed to the aforementioned supporting mechanism (not illustrated). A second bracket  26  that is tubular is provided at the vehicle rear side portion of the first bracket  24 , and the camera  22  is disposed at the inner side of the second bracket  26 . The diameter of the vehicle rear side end portion of the inner surface of the second bracket  26  is enlarged via a step. A cover glass  28  that is plate-shaped is fit-together with an opening portion  26 . A of the vehicle rear side end portion of the second bracket  26 . The cover glass  28  can transmit light therethrough, and closes-off the opening portion  26 A of the vehicle rear side end portion of the second bracket  26 . One surface of double-sided tape  27  is affixed to the outer peripheral portion of the vehicle front side of the cover glass  28  over the entire periphery thereof, and the outer peripheral side of another surface of the double-sided tape  27  is affixed to the step surface of the second bracket  26  over the entire periphery thereof. Further, a heater  29  that is sheet-shaped is adhered to the outer peripheral portion of the vehicle rear side of the cover glass  28  over the entire periphery thereof. 
     The visor rim  14  has a rear wall portion  14 A that structures the vehicle rear side portion of the visor rim  14  and faces the vehicle rear side, and has a peripheral wall portion  14 B that extends toward the vehicle front side from the rear wall portion  14 A. The peripheral wall portion  14 B is a substantial U-shape whose vehicle transverse direction inner side is open, as seen from the vehicle rear side (not shown). Further, a window  30  that is circular is formed so as to penetrate the rear wall portion  14 A. An annular wall portion  32 , which is tilted such that the diameter thereof increases from the peripheral end of the window  30  toward the vehicle rear side, is formed at the outer peripheral side of the window  30 . The lens  22 A of the camera  22  is disposed so as to face the exterior from the window  30 , and the camera  22  captures images of the vehicle rear side via the window  30 . 
     The annular wall portion  32  structures the peripheral portion of the main surface side of the camera  22 . and is disposed outside of the range of image angle A of the camera  22 . Moreover, a portion of the above-described cover glass  28  is exposed from the window  30 , and a recessed portion  33 , which is recessed toward the vehicle front side with respect to a general portion  14 A 1  of the rear wall portion  14 A, is formed by the annular wall portion  32  and a portion of the cover glass  28 . An opening portion  34  for projection/retraction of a nozzle  44  that is described later is formed so as to penetrate the annular wall portion  32 . The opening portion  34  is formed further toward the vehicle upper side than the window  30 . 
     A nozzle unit  42  is housed in the interior of the visor  12  at the vehicle upper side with respect to the camera unit  20 . Note that, in the drawings, the nozzle unit  42  is shown in a side view and not in cross-section. The nozzle unit  42  is made of resin, and structures a portion of the washing device  40 , and is provided in order to jet washing liquid toward the cover glass  28  that is the object of washing in the present embodiment (in other words, toward the main surface side of the camera  22 ). A hose  49  is connected to the nozzle unit  42 , and a pump P that is shown schematically in  FIG. 1A  is connected to the hose  49 . The pump P feeds washing liquid that is stored in a tank T (illustrated schematically). Further, due to the pump P operating, washing liquid is supplied from the hose  49  shown in  FIG. 2A  to the nozzle unit  42 . As an example, the nozzle unit  42  is structured to include the nozzle  44  and a nozzle case  46 . 
     The nozzle case  46  is fixed to the interior of the visor  12 . The nozzle case  46  is a case that is shaped as a tube having a bottom. Washing liquid is supplied to the interior of the nozzle case  46  due to the nozzle case  46  being connected to the hose  49  via a connecting tube portion  48 . A portion of the nozzle  44  is accommodated in the nozzle case  46 . 
     As shown in  FIG. 2B , a portion of the distal end portion side of the nozzle  44  is made able to project/retract from the opening portion  34  (details described later). The nozzle  44  has a nozzle main body portion  50  that is shaped as a tube and extends rectilinearly. A jetting port  50 A that jets-out washing liquid is formed in a portion of the distal end portion side of the nozzle main body portion  50  at the nozzle  44 . Further, a check valve V, which opens in a case in which the pressure at the interior of the nozzle main body portion  50  exceeds a predetermined value, is provided at a portion of the distal end portion side of the nozzle main body portion  50 . The nozzle  44  is structured so as to jet washing liquid from the jetting port  50 A toward the exposed portion side of the cover glass  28  (in other words, the main surface side of the camera  22 ), due to the check valve V opening in a state in which the nozzle  44  projects-out from the opening portion  34 . In the drawings, the direction in which the washing liquid is jetted is shown by arrow B. 
     As shown in  FIG. 2A , the nozzle  44  has an enlarged diameter portion  52  Whose diameter is enlarged via a step portion  51  from the proximal end portion of the nozzle main body portion  50 , and that extends-out toward the proximal end side of the nozzle  44 . The enlarged diameter portion  52  is formed in the shape of a short cylindrical tube. The outer peripheral surface of the enlarged diameter portion  52  is disposed along the inner surface of the nozzle case  46 . 
     A tension spring  45  is housed at the interior of the nozzle  44 . One end of this tension spring  45  is connected to the proximal end side of the nozzle case  46 , and another end is connected to the nozzle main body portion  50 . In the non-operating state of the washing device  40 , the nozzle  44  is pulled toward the proximal end side of the nozzle case  46  by the tension of the tension spring  45 . 
     Further, a cover  60  is provided at the opening portion  34  so as to open/close. Note that, in the drawings, the cover  60  is shown in a side view and not in cross-section. The cover  60  is made of resin. The surface of a cover main body portion  62  that is the main body portion of the cover  60  forms a design surface that is continuous with the surface of the annular wall portion  32 . 
     An enlarged cross-sectional view, in which the state cut along line  3 B- 3 B of  FIG. 2A  is enlarged, is shown in  FIG. 3B . As shown in  FIG. 3B , a projecting portion  64  that is substantially T-shaped is provided at the reverse surface side of the cover main body portion  62 . The projecting portion  64  has a vertical wall portion  64 A that is formed so as to project-out from an intermediate portion in width direction W of the reverse surface side of the cover main body portion  62 , and has a lateral wall portion  6413  that extends in the width direction W at the projecting direction distal end portion of the vertical wall portion  64 A. As shown in  FIG. 2A , the vertical wall portion  64 A stands erect from a length direction intermediate portion of the cover main body portion  62  as seen in a side view of the cover  60 , and is slightly tilted toward the side of moving away from the nozzle  44  while heading from the reverse surface of the cover main body portion  62  in the standing erect direction. 
     The lateral wall portion  64 B of the projecting portion  64  that is shown in  FIG. 3B  is disposed so as to slide along a guide rail  36 . The guide rail  36  is structured to include a guide groove portion  36 A whose cross-sectional shape orthogonal to the length direction is substantially T-shaped. As shown in  FIG. 2A , the guide rail  36  stands erect from the reverse surface side of a region that is a peripheral portion of the opening portion  34  and is at the side far from the main surface of the camera  22 , and, as seen in the direction of  FIG. 2A , extends in a direction orthogonal to the extending direction of the vertical wall portion  64 A of the projecting portion  64 . Due to the above, the cover  60  is provided so as to slide between a closing position  60 X (see  FIG. 2A ) of closing the opening portion  34 , and an opening position  60 Y (see  FIG. 2B ) that is set further toward the side that is far from the main surface of the camera  22  than the closing position  60 X. As shown in  FIG. 2B , the opening position  60 Y is set outside of the range of image angle A of the camera  22 . Note that the opening position  60 Y can be set appropriately at a position at which imaging by the camera  22  can be prevented or suppressed. 
     An enlarged sectional view, in which the state cut along line  3 A- 3 A of  FIG. 2A  is enlarged, is shown in  FIG. 3A . Note that, in  FIG. 3A , the check valve V is illustrated in a simplified manner. As shown. in  FIG. 3A , a pair of projecting wall portions  66  stand erect at the reverse surface side of the cover main body portion  62 . As shown in  FIG. 2A , the projecting wall portions  66  are formed at further toward the side near to the main surface of the camera  22  than the projecting portion  64 . As shown in  FIG. 3A , shaft portions  68 , which project-out from the facing portions toward the width direction inner sides (sides of approaching one another), are formed at the projecting direction distal end sides of the pair of projecting wall portions  66 . 
     The shaft portions  68  are formed in the shapes of short solid cylinders, and are slidably housed in guiding portions  56  that are provided at the nozzle  44 . As shown in  FIG. 2A , elongated portions  54  that are elongated are formed integrally with side portions of the nozzle main body portion  50 . and the guiding portions  56  are formed in the elongated portions  54 . The elongated portions  54  are formed at the side portions at the both sides of the nozzle main body portion  50  respectively, and the guiding portions  56  are long holes. The elongated portions  54  and the guiding portions  56  extend from the distal end portion of the nozzle main body portion  50 , and are inclined toward the proximal end side of the nozzle main body portion  50  while heading toward the side away from the main surface of the camera  22 . 
     The guiding portions  56  guide the shaft portions  68  such that the cover  60  is slid and opened/closed in accordance with movement of the nozzle  44  in projecting/retracting direction X. Namely, the viewing device TO for a vehicle of the present embodiment has an interlocking mechanism  58  that has the guiding portions  56  and the shaft portions  68 , and this interlocking mechanism  58  connects the nozzle  44  and the cover  60 . Further, by using the force of the nozzle  60  being displaced, the interlocking mechanism  58  displaces the cover  60  in a direction that is different than the direction in which the nozzle  60  is displaced so as to openiclose the cover  60 . Here, the interlocking mechanism  58  has the function of sliding the cover  60  from the closing position  60 X (see  FIG. 2A ) to the opening position  60 Y (see  FIG. 213 ) by using the force of the nozzle  44  advancing to the position projecting out from the opening portion  34  (force in the arrow Fw direction of  FIG. 2B ), and combines function of sliding the cover  60  from the opening position  60 Y (see  FIG. 2B ) to the closing position  60 X (see  FIG. 2A ) by using the force of the nozzle  44 , which is in the state of projecting-out from the opening portion  34 , withdrawing. 
     (Operation/Effects) 
     Operation and effects of the above-described embodiment are described next. 
     in the present embodiment, viewing by an occupant of the vehicle shown in  FIG. 2A  is assisted by the camera  22 . Further, in a case in which the exposed portion of the cover glass  28  of the main surface side of the camera  22  is dirty, the pump P (see  FIG. 1A ) operates automatically or manually, and washing liquid is supplied to the interior of the nozzle case  46 . When the washing liquid flows ftom the nozzle case  46  interior into the nozzle  44 , the nozzle  44  advances against the tension of the tension spring  45 . Then, as shown in  FIG. 2B , when the nozzle  44  projects-out from the opening portion  34 , and the pressure of the washing liquid at the interior of the nozzle  44  exceeds a predetermined value, the check valve V opens, and washing liquid is jetted out from the jetting port  50 A toward the exposed portion side of the cover glass  28  (in other words, the main surface side of the camera  22 ). 
     Here, the cover  60  can slide between the closing position  60 X of closing the opening portion  34  shown in  FIG. 2A , and the opening position  60 Y (see  FIG. 2B ) that is set further toward the side that is far from the main surface of the camera  22  than the closing position  60 X. Further, by using the force of the nozzle  60  being displaced, the interlocking mechanism  58  displaces the cover  60  in a direction that is different than the direction in which the nozzle  60  is displaced so as to open/close the cover  60 . Here, the interlocking mechanism  58  slides the cover  60  from the closing position  60 X to the opening position  60 Y shown in  FIG. 2B  (refer to arrow S 1 ) by using the force of the nozzle  44  advancing to the position projecting out from the opening portion  34  (force in the arrow Fw direction of  FIG. 2B ). In this way, in a case of opening the opening portion  34 , the cover  60  is slid to the side far from the main surface of the camera  22 , and therefore, the cover  60  being imaged by the camera  22  is prevented or suppressed. 
     Further, in the present embodiment, the interlocking mechanism  58  connects the nozzle  44  and the cover  60 , and slides the cover  60  from the opening position  60 Y to the closing position  60 X shown. in  FIG. 2A  by using the force of the nozzle  44 , which is in the state of projecting-out from the opening portion  34 , withdrawing. Namely, the interlocking mechanism  58  can open/close the cover  60  by using the motive power that projects/retracts the nozzle  44 . 
     To describe this more concretely, in the present embodiment, the guiding portions  56  that are provided at the nozzle  44  guide the shaft portions  68  provided at the cover  60 , such that the cover  60  slides and is opened/closed in accordance with movement of the nozzle  44  in the projecting/retracting direction X. Accordingly, in the present embodiment, complexity of the structure also can be suppressed. 
     As described above, in accordance with the viewing device  10  for a vehicle of the present embodiment, the cover  60  being imaged. by the camera  22  at the time of washing the main surface side of the camera  22  can be prevented or suppressed. 
     Second Embodiment 
     A viewing device for a vehicle relating to a second embodiment of the present disclosure is described by using  FIG. 4A  through  FIG. 5 . The non-operating state of a washing device  72  of a viewing device  70  for a vehicle relating to the present embodiment is shown. in  FIG. 4A  in a cross-sectional view of a state that is cut at a similar cutting position as  FIG. 2A . The operating state of the washing device  72  is shown in a cross-sectional view in  FIG. 4B . Further, an enlarged sectional view, in which the state cut along line  5 - 5  of  FIG. 4A  is enlarged, is shown in  FIG. 5 . 
     As shown in these drawings, the viewing device  70  for a vehicle relating to the present embodiment differs from the viewing device  10  for a vehicle relating to the first embodiment (see  FIG. 2A ) with regard to the point of having an interlocking mechanism  80  instead of the interlocking mechanism  58  of the first embodiment (see  FIG. 2A ). The other structures are structures that are substantially similar to those of the first embodiment. Accordingly, structural portions that are substantially similar to those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 
     As shown in  FIG. 4A , a nozzle  74  in the present embodiment has protruding portions  76  at which shaft portions  78  are formed, instead of the elongated portions  54  at which the guiding portions  56  are formed (refer to  FIG. 2A  and the like for both) of the first embodiment. The other points are structures that are substantially similar to those of the nozzle  44  (refer to  FIG. 2A  and the like) of the first embodiment, and are made of resin. Note that the portion, which is at the distal end portion side of the nozzle main body portion  50  of the nozzle  74  in the present embodiment and is at the opposite side from the camera  22  side, is chamfered in order to avoid interference with a cover  82 . Although this point differs from the nozzle main body portion  50  of the first embodiment, the other points are similar to those of the nozzle main body portion  50  of the first embodiment, and therefore are denoted by the same reference numerals for convenience. 
     The pair of protruding portions  76  protrude-out from a portion of the distal end portion side of the nozzle main body portion  50 , at the opposite side from the camera  22  side. As shown in  FIG. 5 , the shaft portions  78 , which project-out toward the width direction outer sides (sides of moving away from one another) respectively, are formed at the projecting direction distal end sides of the pair of protruding portions  76 . 
     The shaft portions  78  are formed in the shapes of short solid cylinders, and are slidably housed in guiding portions  86  that are provided in the cover  82 . The guiding portions  86  are long holes that are formed so as to penetrate projecting wall portions  84  that are formed integrally with the reverse surface side of the cover main body portion  62  at the cover  82 . The projecting wall portions  84  are formed as a pair at an intermediate portion in the width direction W of the reverse surface side of the cover main body portion  62 . As shown in  FIG. 4A , the guiding portions  86  extend from the distal end portions of the projecting wall portions  84 , and are inclined toward sides of approaching the main surface of the camera  22  while heading toward the proximal end sides of the projecting wall portions  84 . 
     Further, as shown in  FIG. 4A , the cover  82  of the present embodiment has the projecting wall portions  84  in which the guiding portions  86  are formed, instead of the projecting wall portions  66  at which the shaft portions  68  of the first embodiment are formed (refer to  FIG. 2A  and the like for both), and the other points are structures that are substantially similar to those of the cover  60  of the first embodiment (refer to  FIG. 2A  and the like), and are made of resin. 
     The guiding portions  86  are configured to guide the shaft portions  78  and so as to slide and open/close the cover  82  by receiving load from the shaft portions  78  in accordance with movement of the nozzle  74  in the projecting/retracting direction X (see  FIG. 4A ). Namely, the viewing device  70  for a vehicle of the present embodiment has the interlocking mechanism  80  that has the shaft portions  78  and the guiding portions  86 , and this interlocking mechanism  80  connects the nozzle  74  and the cover  82 . Further, by using the force of the nozzle  74  being displaced, the interlocking mechanism  80  displaces the cover  82  in a direction that is different than the direction in which the nozzle  74  is displaced so as to open/close the cover  82 . Here, the interlocking mechanism  80  has the function of sliding the cover  82  from a closing position  82 X (see  FIG. 4A ) to an opening position  82 Y (see  FIG. 4B ) by using the force of the nozzle  74  advancing to the position projecting out from the opening portion  34  (force in the arrow Fw direction of  FIG. 413 ), and combines the function of sliding the cover  82  from the opening position  82 Y (see  FIG. 4B ) to the closing position  82 X (see  FIG. 4A ) by using the force of the nozzle  74 , which is in the state of projecting-out from the opening portion  34  shown in  FIG. 4B , withdrawing. 
     In accordance with the structure of the present embodiment as well, operation and effects that are similar to those of the above-described first embodiment are obtained. 
     Third Embodiment 
     A viewing device for a vehicle relating. to a third embodiment of the present disclosure is described by using  FIG. 6A  and  FIG. 6B . The non-operating state of a washing device  92  of a viewing device  90  for a vehicle relating to the present embodiment is shown in  FIG. 6A  in a cross-sectional view of a state that is cut at a similar cutting position as  FIG. 2A . The operating state of the washing device  92  is shown in a cross-sectional view in  FIG. 6B . 
     As shown in these drawings, the viewing device  90  for a vehicle relating to the present embodiment differs from the viewing device  10  for a vehicle relating to the first embodiment (see  FIG. 2A ) with regard to the points of having an interlocking mechanism  98  and having an urging member  110  within the guide rail  36 , instead of the interlocking mechanism  58  of the first embodiment (see  FIG. 2A ). The other structures are structures that are substantially similar to those of the first embodiment. Accordingly, structural portions that are substantially similar to those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 
     A nozzle  94  in the present embodiment has a pushing inclined portion  94 A that structures a portion of the interlocking mechanism  98 , instead of the elongated portions  54  at Which the guiding portions  56  are formed (refer to  FIG. 2A  and the like for both) of the first embodiment. The other points are structures that are substantially similar to those of the nozzle  44  (refer to  FIG. 2A ) of the first embodiment, and are made of resin. The pushing inclined portion  94 A is a portion that is inclined toward the opposite side from the camera  22  side, while heading from the distal end toward the proximal end side of a nozzle main body portion  94 A. The proximal end portion of the pushing inclined portion  94 A is positioned at a portion, which protrudes-out toward the opposite side from the camera  22  side, at the nozzle main body portion  94 H. Note that the nozzle main body portion  94 H is structured similarly to the nozzle main body portion  50  of the first embodiment, except for the above-described points. 
     Further, a cover  96  in the present embodiment has a pushed inclined portion  96 A that structures a portion of the interlocking mechanism  98 , instead of the projecting wall portions  66  at which the shaft portions  68  are formed (refer to  FIG. 2A  and the like for both) of the first embodiment. The other points are structures that are substantially similar to those of the cover  60  (see  FIG. 2A ) of the first embodiment, and are made of resin. 
     The pushed inclined portion  96 A is formed at a portion of the end surface at the camera  22  side of the cover  96 , and is disposed further toward the nozzle  94  side than the reverse surface of the annular wall portion  32  in the state in which the cover  96  is at a closing position  96 X shown in  FIG. 6A , and is inclined so as to planarly contact the distal end side of the pushing inclined portion  94 A of the nozzle  94 . Further, in a case in which the nozzle  94  advances, the pushed inclined portion  96 A of the cover  96  is pushed by the pushing inclined portion  94 A of the nozzle  94 , and the cover  96  slides from the closing position  96 X to an opening position  96 Y shown in  FIG. 6B . Namely, by using the force of the nozzle  94  being displaced, the interlocking mechanism  98  of the present embodiment displaces the cover  96  in a direction that is different than the direction in which the nozzle  94  is displaced so as to open/close the cover  96 . Here, the interlocking mechanism  98  has the pushing inclined portion  94 A and the pushed inclined portion  96 A, and is structured so as to slide the cover  96  from the closing position  96 X (see  FIG. 6A ) to the opening position  96 Y by using the force of the nozzle  94  advancing to the position projecting out from the opening portion  34  (force in the arrow Fw direction of  FIG. 6B ). 
     On the other hand, the urging member  110  that is provided within the guide rail  36  is a compression coil spring, and is disposed between the general portion  14 A 1  of the rear wall portion  14 A of the visor rim  14  and the lateral wall portion  64 B of the projecting portion  64  provided at the cover  96 . The urging member  110  is structured so as to urge the cover  96  in the direction of the closing position  96 X shown in  FIG. 6A . 
     In accordance with the present embodiment, in a case in which the nozzle  94  that is shown in  FIG. 6A  advances as shown in  FIG. 6B , due to the pushed inclined portion  96 A of the cover  96  being pushed by the pushing inclined portion  94 A of the nozzle  94 , the cover  96  slides from the closing position  96 X shown in  FIG. 6A  to the opening position  96 Y shown in  FIG. 6B . On the other hand, because the cover  96  is urged in the direction of the closing position  96 X (see  FIG. 6A ) by the urging member  110 , when the nozzle  94 , which is in the state of projecting-out from the opening portion  34  shown in  FIG. 6B , withdrawing as shown in  FIG. 6A , the cover  96  is closed by the urging force of the urging member  110 . 
     As described above, in accordance with the present embodiment as well, the cover  96  being imaged by the camera  22  at the time of washing the main surface side of the camera  22  can be prevented or suppressed. 
     Modified Example of Embodiment 
     Note that, as a modified example of the above-described third embodiment, there may be a structure in which a tension coil spring is used as the urging member for urging the cover ( 96 ) in the direction of the closing position. 
     Further, although the viewing assistance portion in the above-described first through third embodiments is the camera  22 , the viewing assistance portion may be another viewing assistance portion such as a mirror or the like for example. 
     Fourth Embodiment 
     A viewing device for a vehicle relating to a fourth embodiment of the present invention is described next by using  FIG. 7A  through  FIG. 8B . Note that arrow FR that is shown appropriately in these drawings indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow OUT indicates a vehicle transverse direction outer side. 
     A side view of a state in which a portion of a vehicle  1100 , in which a viewing device  111  for a vehicle relating to the present embodiment is installed, is seen from a vehicle lateral side is shown in  FIG. 7A . A plan view of a state in which the viewing device  111  for a vehicle and a peripheral portion thereof are seen from the vehicle upper side is shown in  FIG. 7B . 
     As shown in  FIG. 7A , the viewing device  111  for a vehicle is, as an example, provided at the upper portion and vehicle rear side end portion of a fender panel  1104  of a vehicle side portion  1102 . As shown in  FIG. 7B , the viewing device  111  for a vehicle has a visor  112  that serves as a housing body. The visor  112  is made of resin, and the outer peripheral surface of the visor  112  structures the design surface of the viewing device  111  for a vehicle. The visor  112  is supported at the vehicle body side in a fixed state via a supporting mechanism (not shown) that is provided at the interior of the visor  112 . The vehicle rear side portion of the visor  112  is structured by a visor rim  114  that serves as a panel member. Further, the vehicle front side and upper side portion of the visor  112  is structured by an upper visor cover  116 , and the vehicle front side and lower side portion of the visor  112  is structured by a lower visor cover  118 . The visor  112  that is structured in this way houses a camera unit  120  in the interior thereof. 
     A cross-sectional view of a state in which the cross-section along line  8 A- 8 A of  FIG. 7B  is enlarged is shown in  FIG. 8A . This  FIG. 8A  shows a non-operating state of a washing device  140 , which is described later, of the viewing device  111  for a vehicle, and  FIG. 8B  shows an operating state of the washing device  140 . 
     As shown in  FIG. 8A , the camera unit  120  is structured to include a camera  122  that serves as a viewing assistance portion that assists viewing by an occupant of the vehicle. The camera  122  has, at the main surface side thereof, a lens  122 A, and this lens  122 A faces the vehicle rear side. The camera  122  is electrically connected to a control device (not shown) of the vehicle, and can capture images of the vehicle rear side by control of the control device. A monitor (not shown) is electrically connected to the control device, and the monitor can display the images captured by the camera  122 , by control of the control device. The monitor is set within the vehicle cabin, and, due to an occupant of the vehicle (in particular, the driver) viewing the image displayed on the monitor, viewing of the vehicle rear side by the vehicle occupant is assisted. 
     The portion, which is at the opposite side from the lens  122 A side, of the camera  122  is mounted to a first bracket  124  that is box-shaped. The first bracket  124  is fixed to the aforementioned supporting mechanism (not illustrated). A second bracket  126  that is tubular is provided at the vehicle rear side portion of the first bracket  124 , and the camera  122  is disposed at the inner side of the second bracket  126 . The diameter of the vehicle rear side end portion of the inner surface of the second bracket  126  is enlarged via a step. A cover glass  128  that is plate-shaped is fit-together with an opening portion  126 A of the vehicle rear side end portion of the second bracket  126 . The cover glass  128  can transmit light therethrough, and closes-off the opening portion  126 A of the vehicle rear side end portion of the second bracket  126 . One surface of double-sided tape  127  is affixed to the outer peripheral portion of the vehicle front side of the cover glass  128  over the entire periphery thereof, and the outer peripheral side of another surface of the double-sided tape  127  is affixed to the step surface of the second bracket  126  over the entire periphery thereof. Further, a heater  129  that is sheet-shaped is adhered to the outer peripheral portion of the vehicle rear side of the cover glass  128  over the entire periphery thereof. 
     The visor rim  114  has a rear wall portion  114 A that structures the vehicle rear side portion of the visor rim  114  and faces the vehicle rear side, and has a peripheral wall portion  114 B that extends toward the vehicle front side from the rear wall portion  114 A. The peripheral wall portion  114 B is a substantial U-shape whose vehicle transverse direction inner side is open, as seen from the vehicle rear side (not shown). Further, a window  130  that is circular is formed so as to penetrate the rear wall portion  114 A. An annular wall portion  132 , which is tilted such that the diameter thereof increases from the peripheral end of the window  130  toward the vehicle rear side, is formed at the outer peripheral side of the window  130 . The lens  122 A of the camera  122  is disposed so as to face the exterior from the window  130 , and the camera  122  captures images of the vehicle rear side via the window  130 . The annular wall portion  132  structures the peripheral portion of the main surface side of the camera  122 , and is disposed outside of the range of image angle A of the camera  122 . Moreover, a portion of the above-described cover glass  128  is exposed from the window  130 , and a recessed portion  133 , which is recessed toward the vehicle front side with respect to a general portion  114 A 1  of the rear wall portion  114 A, is formed by the annular wall portion  132  and the cover glass  128 . 
     An opening portion  134  for projection/retraction of a nozzle  144  that is described later is formed so as to penetrate the annular wall portion  132 . The opening portion  134  is formed further toward the vehicle upper side than the window  130 . Further, a cover  136  that is made of resin is provided at the opening portion  134 . The surface of the cover  136  forms a design surface that is continuous with the surface of the annular wall portion  132 . A hinge shaft  137  is provided at the end portion, which is at the side far from the window  130 , at the cover  136 . The hinge shaft  137  extends substantially along the vehicle transverse direction, and the length direction both side regions of the hinge shaft  137  protrude-out from the cover  136 . The hinge shaft  137  is supported so as to rotate freely at shaft supporting portions (not illustrated) that are provided at peripheral portions of the opening portion  134  of the visor rim  114 . Due thereto, the cover  136  can rotate around the hinge shaft  137 , and is disposed so as to cover the opening portion  134  so as to open/close the opening portion  134 . 
     A spring mounting portion  114 S is formed at the general portion  114 A 1  of the rear wall portion  114 A at the reverse surface side of a peripheral portion of the Opening portion  134 . One end of a plate spring  138  is mounted to this spring mounting portion  114 S. The other end of the plate spring  138  is mounted to a spring mounting portion  136 S that is formed at the reverse surface side of the cover  136 . The plate spring  138  urges the cover  136  toward the closing position (the position shown in  FIG. 8A ). 
     A nozzle unit  142  is housed in the interior of the visor  112  at the vehicle upper side with respect to the camera unit  120 . The nozzle unit  142  structures a portion of the washing device  140  and is provided in order to jet washing liquid toward the exposed portion of the cover glass  128  that is the object of washing in the present embodiment (in other words, toward the main surface side of the camera  122 ). A hose  149  is connected to the nozzle unit  142 , and the pump P that is shown schematically in  FIG. 7A  is connected to the hose  149 . The pump P feeds washing liquid that is stored in the tank T (illustrated schematically). Further, due to the pump P operating, washing liquid is supplied from the hose  149  shown in  FIG. 8A  to the nozzle unit  142 . As an example, the nozzle unit  142  is structured to include the nozzle  144 , a nozzle case  146 , and a cover  148  for the nozzle case. Note that, in the drawings, the nozzle  144  is shown in a side view and not in cross-section. 
     The nozzle case  146  is fixed to the interior of the visor  112 . The nozzle case  146  has a first tube portion  146 A that is cylindrical tube shaped and structures the proximal portion side of the nozzle case  146 , and a second tube portion  146 B that structures the distal end portion side of the nozzle case  146  and whose inner diameter is smaller than that of the first tube portion  146 A. The distal end portion of the first tube portion  146 A and the proximal end portion of the second tube portion  14613  are connected via a step over the entire periphery. A cover main body  148 A, which is a portion of the cover  148  for the nozzle case, is fixed so as to cover the proximal end side opening of the first tube portion  146 A of the nozzle case  146 . The cover main body portion  148 A of the cover  148  for the nozzle case is formed in the shape of a short cylindrical tube having a bottom. A connecting tube portion  148 B, which projects-out from the bottom portion of the cover main body  148 A toward the opposite side from the nozzle case  146  side, is formed at the cover  148  for the nozzle case. One end portion of the hose  149  is connected to this connecting tube portion  148 B, and, due thereto, washing liquid is supplied to the interior of the nozzle case  146 . 
     The nozzle case  146  houses a portion of the nozzle  144 . As shown in  FIG. 8B , a bent portion  152  is formed at an intermediate portion of the nozzle  144 , and the nozzle  144  is formed in a substantial L-shape on the whole. A portion  150  at the distal end portion side of the nozzle  144  is made able to project retract from the opening portion  134  (details described later). A jetting port  150 A that jets-out the washing liquid is formed in the portion  150  at the distal end portion side of the nozzle  144 . The check valve V, which opens in a case in which the pressure at the interior of the nozzle  144  exceeds a predetermined value, is provided at the portion  150  at the distal end portion side of the nozzle  144 , and, due to the check valve V opening, washing liquid is jetted-out from the jetting port  150 A. In the drawings, the direction in which the washing liquid is jetted-out is shown by arrow B. 
     A proximal portion  154 , which is further toward the proximal end side than the bent portion  152  at the nozzle  144 , has a proximal portion elongated tube portion  154 A that is continuous with the bent portion  152  and whose inner diameter is set to be equal to that of the portion  150  at the distal end portion side. As shown in  FIG. 8A , a tension spring  145  that serves as an urging member is housed at the interior of the proximal portion elongated tube portion  154 A. One end of this tension spring  145  is connected to the proximal end side of the nozzle case  146 , and another end is connected to the proximal portion elongated tube portion  154 A. The tension spring  145  urges the nozzle  144  in the direction of a stored position  144 X. Namely, in the non-operating state of the washing device  140 , the nozzle  144  is pulled toward the proximal end side of the nozzle case  146  by the tension of the tension spring  145 . 
     Further, as shown in  FIG. 8B , the proximal portion  154  of the nozzle  144  has an enlarged diameter portion  154 C whose diameter is enlarged from the proximal end side of the proximal portion elongated tube portion  154 A via a step portion  154 B, and that extends-out toward the proximal end side of the nozzle  144 . The enlarged diameter portion  154 C is formed in the shape of a short cylindrical tube, and the inner diameter thereof is larger than that of the proximal portion elongated tube portion  154 A. The outer peripheral surface of the enlarged diameter portion  154 C is disposed along the inner surface of the first tube portion  146 A of the nozzle case  146 . Further, as a result of the nozzle  144  being rotated and displaced around the axis of the proximal portion  154  from the state shown in  FIG. 8A  (the non-operating state of the washing device  140 ), as shown in  FIG. 8B , the jetting port  150 A is disposed so as to face the exposed portion side of the cover glass  128  (in other words, the main surface side of the camera  122 ). 
     The washing device  140  has an advancing/withdrawing rotating mechanism  158  that serves as both a rotating mechanism configured to rotate and displace the nozzle  144  around the axis of the proximal portion  154 , and an advancing/withdrawing mechanism that moves the nozzle  144  to advance/withdraw along the axial direction of the proximal portion  154 . The advancing/withdrawing rotating mechanism  158  in the present embodiment has a screw structure  158 S that screws-together a male screw portion  154 S, which is provided at the outer peripheral portion of the proximal portion  154  of the nozzle  144  (more concretely, at a portion of the proximal end side of the proximal portion elongated tube portion  154 A), and a female screw portion  146 S, which is provided at the inner peripheral portion of the nozzle case  146 , and the advancing/withdrawing rotating mechanism  158  is structured to include the nozzle case  146  and the tension spring  145  (see  FIG. 8A ). Due thereto, the advancing/withdrawing rotating mechanism  158  is structured so as to rotate and displace the nozzle  144  around the axis of the proximal portion  154 , while moving the nozzle  144  to advance/withdraw along the axial direction of the proximal portion  154 . Further, by using the force of the nozzle  144  being displaced, the advancing/withdrawing rotating mechanism  158  displaces the cover  136  in a direction that is different than the direction in which the nozzle  144  is displaced so as to open/close the cover  136 . Here, the advancing/withdrawing rotating mechanism  158  opens/closes the cover  136  by using the force of the nozzle  144  being rotated and displaced. 
     (Operation/Effects) 
     Operation and effects of the present embodiment are described next. 
     In the present embodiment, viewing by an occupant of the vehicle is assisted by the camera  122  that is housed in the visor  112  shown in  FIG. 8A . Further, in a case in which the exposed portion of the cover glass  128  of the main surface side of the camera  122  is dirty, due to the pump P (see  FIG. 1 ) operating automatically or manually, the washing device  140  that washes the exposed portion of the cover glass  128  operates. Then, the washing liquid is jetted-out from the nozzle  144  toward the exposed portion of the cover glass  128  of the main surface side of the camera  122 . Here, the nozzle  144  is disposed such that, by being rotated and displaced from the state shown in  FIG. 8A  around the axis of the proximal portion  154  as is shown in  FIG. 8B , the jelling port  150 A faces the exposed portion side of the cover glass  128 . Due thereto, the nozzle  144  is rotated and displaced around the axis of the proximal portion  154  by the advancing/withdrawing rotating mechanism  158 . Further, by using the force of the nozzle  144  being displaced, the advancing/withdrawing rotating mechanism  158  displaces the cover  136  in a direction that is different from the direction in which the nozzle  144  is displaced so as to open/close the cover  136 . Here, the advancing/withdrawing rotating mechanism  158  opens/closes the cover  136  by using the force of the nozzle  144  being rotated and displaced. Therefore, enlarging of the space at the periphery of the stored position  144 X of the nozzle  144  (see  FIG. 8A ) is suppressed. 
     To describe this further, for example, in a comparative structure in which a nozzle is simply moved so as to advance/withdraw in a posture that is similar to that of the nozzle  144  (without being rotated and displaced), when the nozzle, which is at a similar position as the nozzle  144  shown in  FIG. 8B , merely withdraws, a portion of the distal end portion side of the nozzle interferes with peripheral structures. Therefore, in the case of the above-described comparative structure, the position of the nozzle must be shifted in a direction of moving away from the camera unit ( 120 ), and the upper wall portion position of the peripheral wall portion ( 114 B) of the visor rim ( 114 ) must be shifted toward the upper side. In such a structure, the space at the periphery of the nozzle storage position is enlarged. In contrast, in the present embodiment, as a result of the nozzle  144  being rotated and displaced around the axis of the proximal portion  154 , interference with peripheral structures is avoided, and enlarging of the space at the periphery of the stored position  144 X of the nozzle  144  (see  FIG. 8A ) is suppressed. 
     Further, in the present embodiment, the advancing/withdrawing rotating mechanism  158  serves as both a rotating mechanism and an advancing/withdrawing mechanism, and the nozzle  144  is rotated and displaced around the axis of the proximal portion  154  while being moved so as to advance/withdraw along the axial direction of the proximal portion  154 , by the advancing/withdrawing rotating mechanism  158 . Due thereto, a new variation of the locus of movement of the nozzle  144  can be provided, and a new variation for avoiding interference between the nozzle  144  and peripheral structures can be provided. 
     Further, in the present embodiment, as shown in  FIG. 8A , in a state in which a portion of the nozzle  144  is accommodated in the nozzle case  146 , the nozzle  144  is urged in the direction of the stored position  144 X by the tension spring  145 , and washing liquid is supplied to the nozzle case  146 . Here, the male screw portion  154 S is provided at the outer peripheral portion of the proximal portion  154  of the nozzle  144 , and the female screw portion  146 S is provided at the inner peripheral portion of the nozzle case  146 , and the screw structure  158 S that screws these together is provided. Due thereto, when washing liquid is supplied to the nozzle case  146 , and the nozzle  144  is pushed against the urging force of the tension spring  145 , as shown in  FIG. 8B , the nozzle  144  is rotated and displaced around the axis of the proximal portion  154  while advancing along the axial direction of the proximal portion  154 . Further, when  1  supply of the washing liquid to the nozzle case  146  is stopped, the nozzle  144  that receives the urging force of the tension spring  145  is rotated and displaced around the axis of the proximal portion  154  while withdrawing along the axial direction of the proximal portion  54 , and returns to the stored position  144 X shown in  FIG. 8A . 
     In this way, in the present embodiment, the nozzle  144  is displaced by the screw structure  158 S while the washing liquid is used as motive power, and further, the urging force of the tension spring  145  shown in  FIG. 8A  is utilized. Therefore, an increase in the size of the structural portions that displace the nozzle  144  can be suppressed, and the space for housing such structural portions can be kept small. 
     As described above, in accordance with the viewing device  111  for a vehicle of the present embodiment, the space that is needed in order to house and move the nozzle  144  can be kept small even if the intermediate portion of the nozzle  144  is bent. 
     Fifth Embodiment 
     A viewing device for a vehicle relating to a fifth embodiment of the present invention is described by using  FIG. 3A  through  FIG. 9B . The non-operating state of a washing device  162  of a viewing device  160  for a vehicle relating to the present embodiment is shown in  FIG. 9A  in a cross-sectional view of a state that is cut at a similar cutting position as  FIG. 8A . The operating state of the washing device  162  is shown in a cross-sectional view in  FIG. 9B . Note that, in  FIG. 9A  and  FIG. 9B , the washing device  162  is shown in a side view and not in cross-section. Further, an enlarged sectional view, in which the state cut along line D-D of  FIG. 9A  is enlarged, is shown in  FIG. 10 . 
     As shown in these drawings, the viewing device  160  for a vehicle relating to the present embodiment differs from the viewing device  111  for a vehicle relating to the fourth embodiment (see  FIG. 8A ) with regard to the point of having a first mechanism  176  that serves as an advancing/withdrawing mechanism and a second mechanism  178  that serves as a rotating mechanism and advancing/withdrawing mechanism, instead of the advancing/withdrawing rotating mechanism  158  of the fourth embodiment (see  FIG. 8A ). The other structures are structures that are substantially similar to those of the fourth embodiment. Accordingly, structural portions that are substantially similar to those of the fourth embodiment are denoted by the same reference numerals, and description thereof is omitted. 
     A nozzle  166  in the present embodiment is structured similarly to the nozzle  144  of the fourth embodiment (see  FIG. 8A ) except for the point of not having the male screw portion  154 S of the fourth embodiment (see  FIG. 8A ), and the point of having a portion that structures a portion of the first mechanism  176  and a portion of the second mechanism  178 . The nozzle  166  is made of resin. Further, a nozzle case  168  in the present embodiment is structured similarly to the nozzle case  146  of the fourth embodiment (see  FIG. 8A ) except for the point of not having the female screw portion  146 S of the fourth embodiment (see  FIG. 8A ). and the point of having a portion that structures a portion of the first mechanism  176  and a portion of the second mechanism  178 . The nozzle case  168  is made of resin. 
     As shown in  FIG. 9B , a proximal portion  170 , which is further toward the proximal end side than the bent portion  152  at the nozzle  166 , has, instead of the proximal portion elongated tube portion  154 A of the fourth embodiment (see  FIG. 8B ), a proximal portion elongated tube portion  170 A that does not have the male screw portion  154 S (see  FIG. 8B ). A shaft portion  170 P stands erect from the outer peripheral surface of a length direction intermediate portion of the proximal portion elongated tube portion  170 A of the present embodiment. 
     In contrast, a first guiding portion  172 A and a second guiding portion  172 B are provided, instead of the female screw portion  146 S of the fourth embodiment (see  FIG. 8B ), at the nozzle case  168  that accommodates a portion of the nozzle  166 . The first guiding portion  172 A is a guide rail portion that is formed at the nozzle case  168 , rectilinearly along the axial direction of the proximal portion  170  of the nozzle  166 , and guides the shaft portion  170 P of the nozzle  166 . Further, the second guiding portion  172 B is a guide rail portion that is formed at the nozzle case  168  continuously with the distal end of the first guiding portion  172 A so as to form a portion of a spiral, and guides the shaft portion  170 P of the nozzle  166 . 
     In the present embodiment, the first mechanism  176  has the above-described shaft portion  170 P and first guiding portion  172 A, and is structured to include the nozzle case  168  and the tension spring  145  (see  FIG. 9A ). Due thereto, the first mechanism  176  is structured so as to move the nozzle  166  to advance/withdraw along the axial direction of the proximal portion  170  and in a state in which the posture thereof at a stored position  166 X is maintained, between the stored position  166 X (see  FIG. 9A ) at which the nozzle  166  is stored and an intermediate reference position that is a position that is advanced further than the stored position  166 X and is a position that is set in advance (a position that is advanced further than the stored position  166 X by an amount corresponding to the length of the first guiding portion  172  in the guiding direction). 
     The second mechanism  178  of the present embodiment has the above-described shaft portion  170 P and second guiding portion  172 B, and is structured to include the nozzle case  168  and the tension spring  145  (see  FIG. 9A ). Due thereto, the second mechanism  178  serves as both a rotating mechanism configured to rotate and displace the nozzle  166  around the axis of the proximal portion  170 , and an advancing/withdrawing mechanism that moves the nozzle  166  so as to advance/withdraw along the axial direction of the proximal portion  170 . Further, the second mechanism  178  is structured so as to rotate and displace the nozzle  166  around the axis of the proximal portion  170  while moving the nozzle  166  to advance/withdraw along the axial direction of the proximal portion  170 , between the aforementioned intermediate reference position and a jetting position  166 Y (see  FIG. 9B ) that is the position at which the nozzle  166  jets-out the washing liquid. Further, by using the force of the nozzle  166  being displaced, the second mechanism  178  displaces the cover  136  in a direction that is different than the direction in which the nozzle  166  is displaced so as to open/close the cover  136 . Here, the second mechanism  178  opens/closes the cover  136  by using the force of the nozzle  166  being rotated and displaced. 
     In accordance with the present embodiment, as shown in  FIG. 9A , the nozzle  166  is urged in the direction of the stored position  166 X by the tension spring  145  in a state in which a portion of the nozzle  166  is accommodated in the nozzle case  168 , and washing liquid is supplied to the nozzle case  168 . The shaft portion  170 P, which stands erect from the outer peripheral surface of the proximal portion  170  of the nozzle  166 , is guided along the axial direction of the proximal portion  170  of the nozzle  166  by the first guiding portion  172 A that is formed at the nozzle case  168 . Further, the shaft portion  170 P is guided by the second guiding portion  172 B that is continuous with the distal end of the first guiding portion  172 A at the nozzle case  168  and that is formed so as to form a portion of a spiral. 
     Due thereto, when washing liquid is supplied to the nozzle case  168 , and the nozzle  166  is pushed, the nozzle  166  advances along the axial direction of the proximal portion  170  due to the first mechanism  176  in a state in which the posture of the nozzle  166  at the time of storage is maintained, and thereafter, is rotated and displaced around the axis of the proximal portion  170  while advancing along the axial direction of the proximal portion  170  due to the second mechanism  178 , and is disposed at the jetting position  166 Y shown in  FIG. 9B . Further, when the supply of washing liquid to the nozzle case  168  is stopped, the nozzle  166  that receives the urging force of the tension spring  145  (see  FIG. 9A ) is rotated and displaced around the axis of the proximal portion  170  while withdrawing along the axial direction of the proximal portion  170  due to the second mechanism  178 , and thereafter, withdraws along the axial direction of the proximal portion  170  due to the first mechanism  176 , and is disposed at the stored position  166 X shown in  FIG. 9A . In this way, in the present embodiment, a new variation of the locus of movement of the nozzle  166  can be provided, and a new variation for avoiding interference between the nozzle  166  and peripheral structures can be provided. Further, as a result of the nozzle  166  being rotated and displaced around the axis of the proximal portion  170  by the second mechanism  178 , enlargement of the space at the periphery of the stored position  166 X of the nozzle  166  is suppressed. 
     Further, in the present embodiment, the nozzle  166  is displaced by using the shaft portion  170 P, the first guiding portion  172 A and the second guiding portion  172 B, while the washing liquid is used as motive power, and further, the urging force of the tension spring  145  is utilized. Therefore, an increase in size of the structural portions that displace the nozzle  166  can be suppressed, and the space for housing such structural portions can be kept small. 
     In accordance with the viewing device  160  for a vehicle of the present embodiment that is described above, the space that is needed in order to house and move the nozzle  166  can be kept small even if an intermediate portion of the nozzle  166  is bent. 
     Sixth Embodiment 
     A viewing device for a vehicle relating to a sixth embodiment of the present invention is described by using  FIG. 11A  through  FIG. 13B . The non-operating state of a washing device  182  of a viewing device  180  for a vehicle relating to the present embodiment is shown in  FIG. 1A  in a cross-sectional view of a state that is cut at a similar cutting position as  FIG. 8A . The operating state of the washing device  182  is shown in a cross-sectional view in  FIG. 11B . Note that, in  FIG. 11A  and  FIG. 11B , portions of the washing device  182  (concretely, a nozzle  186  and a part  190  for nozzle rotation that serves as a tubular body) are shown in a side view and not in cross-section. 
     As shown in these drawings, the viewing device  180  for a vehicle relating to the present embodiment differs from the viewing device  111  for a vehicle relating to the fourth embodiment (see  FIG. 8A ) with regard to the point of having a rotating mechanism  194 , instead of the advancing/withdrawing rotating mechanism  158  of the fourth embodiment (see Fiu.  8 A). The other structures are structures that are substantially similar to those of the fourth embodiment. Accordingly, structural portions that are substantially similar to those of the fourth embodiment are denoted by the same reference numerals, and description thereof is omitted. 
     In  FIG. 12 , an exploded perspective view in which a nozzle unit  184  of the present embodiment is exploded is shown (a tension spring  196  (see  FIG. 13B ) that serves as an uruing member and is described later is not illustrated). A drawing of state that is enlarged and seen from the direction of arrow  13 A of  FIG. 11A  is shown in  FIG. 13A , and a cross-sectional view of a state that is enlarged and is cut along line  13 B- 13 B of  FIG. 11A  is shown in  FIG. 13B . The check valve V is illustrated in a simplified manner in  FIG. 13B . Further, the nozzle unit  184  is made of resin. As shown in  FIG. 12  through  FIG. 13B , the nozzle  186  has the bent portion  152  and the portion  150  at the distal end side that are substantially similar to those of the fourth embodiment. Further, instead of the proximal portion elongated tube portion  154 A of the nozzle  144  (refer to  FIG. 8B  for both) of the fourth embodiment, the nozzle  186  has a proximal portion elongated tube portion  188 A that does not have the male screw portion  154 S (see  FIG. 8B ). The inner diameter and the outer diameter of the proximal portion elongated tube portion  188 A are set to be equal to those of the portion  150  at the distal end side of the nozzle  186 . 
     Further, as shown in  FIG. 13B , a first enlarged diameter portion  188 C, which is tubular and whose diameter is enlarged via a first step portion  188 B, extends at the proximal end side of the nozzle  186  from an axial direction intermediate portion of a proximal portion  188  of the nozzle  186  (more concretely, the proximal end of the proximal portion elongated tube portion  188 A). 
     Further, as shown in  FIG. 12  and  FIG. 13B , the nozzle unit  184  has the part  190  for nozzle rotation. As shown in  FIG. 13B , the tension spring  196  is housed in the interior of the part  190  for nozzle rotation. One end of this tension spring  196  is anchored on a spring anchoring portion  148 K that is hook-shaped and is formed at the proximal end side of the cover  148  for the nozzle case. The another end of the tension spring  196  is anchored on a spring anchoring portion  190 K that spans across the inner side of the part  190  for nozzle rotation. In the non-operating state of the washing device  182  (see  FIG. 11A ), the part  190  for nozzle rotation is pulled toward the proximal end side of the cover  148  for the nozzle case by the tension of the tension spring  196 . Further, the tension spring  196  also has the function of suppressing rotation of the part  190  for nozzle rotation around its own axis. 
     The part  190  for nozzle rotation has an inserted tube portion  190 A that is inserted in the first enlarged diameter portion  188 C of the nozzle  186 . The above-described tension spring  196  urges the part  190  for nozzle rotation in the direction of decreasing the inserted amount of the inserted tube portion  190 A in the first enlarged diameter portion  188 C of the nozzle  186 . A pressure receiving wall portion  190 X, which extends-out toward the radial direction inner side of the inserted tube portion  190 A from a region at the insertion distal end side, is formed at the inserted tube portion  190 A. The pressure receiving wall portion  190 X is the region that receives the liquid pressure of the washing liquid, and a through-hole  190 H is formed therein. The through-hole  190 H is, as an example, formed in the central portion of the pressure receiving wall portion  190 X, and the inner diameter of the through-hole  190 H is, as an example, set to be smaller than the inner diameter of the proximal portion elongated tube portion  188 A. Further, the part  190  for nozzle rotation has a second enlarged diameter portion  190 C that is tubular, and whose diameter is enlarged via a second step portion  190 B from the end portion, which is at the opposite side from the insertion distal end side, at the inserted tube portion  190 A, and that extends at the opposite side from the outer peripheral space side of the inserted tube portion  190 A (in other words, at the bottom portion side of the cover main body  148 A of the cover  148  for the nozzle case). The second enlarged diameter portion  190 C is formed in the shape of a short cylindrical tube, and the inner diameter thereof is larger than that of the inserted tube portion  190 A, and the outer diameter thereof is larger than that of the first enlarged diameter portion  1880  of the nozzle  186 . 
     Further, the nozzle unit  184  has a nozzle case  192  to which washing liquid is supplied. Note that the nozzle case  192  is, as an example, structured by plural structural parts  192 X,  192 Y that are shown in  FIG. 12  being joined. As shown in  FIG. 13A , the nozzle case  192  has a case tube portion  192 A that is formed in a tubular shape. The case tube portion  192 A houses the first step portion  188 B and the first enlarged diameter portion  188 C of the nozzle  186 , and the part  190  for nozzle rotation, which are shown in  FIG. 13B . Inner peripheral surface  192 N of the case tube portion  192 A is configured to not contact the outer peripheral surface of the first enlarged diameter portion  188 C of the nozzle  186 , and contact the outer peripheral surface of the second enlarged diameter portion  190 C of the part  190  for nozzle rotation. 
     The nozzle case  192  has a distal end wall portion  192 B that serves as a distal end side wall portion and extends-out toward the radial direction inner side of the case tube portion  192 A from a portion of the distal end side of the case tube portion  192 . A The proximal portion elongated tube portion  188 A passes-through this distal end wall portion  192 B, and the inner diameter of the distal end wall portion  192 B is set to be equal to (strictly speaking, very slightly larger than) the outer diameter of the proximal portion elongated tube portion  188 A of the nozzle  186 . The first step portion  188 B of the nozzle  186  is disposed in a state of contacting the distal end wall portion  192 B. Further, the nozzle case  192  has a restricting wall portion  192 C that serves as a restricting portion that extends-out toward the radial direction inner side of the case tube portion  192 A from an axial direction intermediate portion of the case tube portion  192 A. The restricting wall portion  192 C is formed in an annular shape as seen from the axial direction of the case tube portion  192 A, and the inner diameter of the restricting wall portion  192 C is set to be equal to the inner diameter of the first enlarged diameter portion  188 C of the nozzle  186 . The proximal end surface of the first enlarged diameter portion  188 C of the nozzle  186  is disposed in a state of contacting the restricting wall portion  192 C. Namely, the restricting wall portion  192 C is configured to restrict the movement of the first enlarged diameter portion  188 C of the nozzle  186  toward the opposite side from the distal end wall portion  192 B side. 
     On the other hand, as shown in  FIG. 12 , a shaft portion  190 P stands erect from the outer peripheral surface of a portion of the distal end portion side of the inserted tube portion  190 A. Further, a guiding portion  188 G that accommodates and guides the shaft portion  190 P is formed so as to penetrate the first enlarged diameter portion  188 C of the nozzle  186 , so as to form a portion of a spiral. The guiding portion  188 G is configured to rotate and displace the first enlarged diameter portion  188 C around the axis of the proximal portion  188 , in a case in which the guiding portion  188 G is pushed by the shaft portion  190 P in the axial direction of the proximal portion  188 . Further, the rotating mechanism  194  of the present embodiment has the above-described shaft portion  190 P and guiding portion  188 G, and is structured to include the first step portion  188 B and the first enlarged diameter portion  188 C of the nozzle  186 , the part  190  for nozzle rotation, the nozzle case  192  and the tension spring  196  that are shown in  FIG. 13A . Further, by using the force of the nozzle  186  being displaced, the rotating mechanism  194  displaces the cover  136  in a direction that is different from the direction in which the nozzle  186  is displaced so as to open/close the cover  136 . Here, the rotating mechanism  194  opens/closes the cover  136  by using the force of the nozzle  186  being rotated and displaced. 
     Operation and effects of the present embodiment are described next. 
     In the present embodiment, as shown in  FIG. 13B , the first step portion  188 B of the nozzle  186  is disposed in a state of contacting the distal end wall portion  192 B of the nozzle case  192 , and the restricting wall portion  192 C restricts movement of the first enlarged diameter portion  188 C of the nozzle  186  toward the opposite side from the distal end wall portion  192 B side. Accordingly, movement of the first step portion  186 B and the first enlarged diameter portion  188 C in a direction running along the axial direction of the proximal portion  188  is not possible, and rotation and displacement thereof around the axis of the proximal portion  188  are possible. 
     Further, in the present embodiment, the inserted tube portion  190 A of the part  190  for nozzle rotation is inserted in the first enlarged diameter portion  188 C of the nozzle  186 . Further, because the outer peripheral surface of the second enlarged diameter portion  190 C of the part  190  for nozzle rotation contacts the inner peripheral surface of the case tube portion  192 . A of the nozzle case  192 , in a case in which the part  190  for nozzle rotation advances along the axial direction thereof due to the liquid force of the washing liquid, the part  190  for nozzle rotation can move stably. Further, the part  190  for nozzle rotation is urged by the tension spring  196  in the direction of decreasing the inserted amount of the inserted tube portion  190 A in the first enlarged diameter portion  188 C, and rotation around the axis of the part  190  for nozzle rotation is suppressed by the tension spring  196 . 
     Further, as shown in  FIG. 11A , the shaft portion  190 P stands erect from the outer peripheral surface of a portion of the distal end portion side of the inserted tube portion  190 A. The guiding portion  188 G is configured to rotate and displace the first enlarged diameter portion  188 C around the axis of the proximal portion  188  in a case in which the guiding portion  188 C, which is formed so as to form a portion of a spiral at the first enlarged diameter portion  188 C of the nozzle  186 , is pushed by the shaft portion  190 P. Due thereto, when washing liquid is supplied to the nozzle case  192 , and the part  190  for nozzle rotation advances against the urging force of the tension spring  196  (see  FIG. 13B ), the shaft portion  190 P of the part  190  for nozzle rotation pushes the guiding portion  188 C of the nozzle  186 , and, as shown in  FIG. 11B , the nozzle  186  is rotated and displaced around the axis of the proximal portion  188 , without the position in the axial direction of the proximal portion  188  changing. Further, by using the force of the nozzle  186  being displaced, the rotating mechanism  194  displaces the cover  136  in a direction that is different than the direction in which the nozzle  186  is displaced so as to open/close the cover  136 . Here, the rotating mechanism opens/closes the cover  136  by using the force of the nozzle  186  being rotated and displaced. At this time, the cover  136  is pushed by the portion  150  at the distal end side of the nozzle  186  and is opened. In accordance with the present embodiment, the space at the periphery of the stored position  186 X of the nozzle  186  can be made to be small due to the nozzle  186  not stroking. 
     Further, when supply of washing liquid to the nozzle case  192  is stopped, the part  190  for nozzle rotation that receives the urging force of the tension spring  196  withdraws. Therefore, the shaft portion  190 P of the part  190  for nozzle rotation pushes the guiding portion  188 G of the nozzle  186 , and the nozzle  186  is rotated and displaced around the axis of the proximal portion  188  without the position in the axial direction of the proximal portion  188  changing, and the nozzle  186  returns to the stored position  186 X shown in  FIG. 11A . At this time, the cover  136  is closed by the urging force of the plate spring  138 . 
     In this way, in the present embodiment, the nozzle  186  is displaced by using the above-described rotating mechanism  194 , while the washing liquid is used as motive power, and further, the urging force of the tension spring  196  is utilized. Therefore, an increase in the size of the structural portions that displace the nozzle  186  can be suppressed, and the space for housing such structural portions can be kept small. 
     As described above, in accordance with the present embodiment, the space that is needed in order to house and move the nozzle  186  can be kept small even if an intermediate portion of the nozzle  186  is bent. 
     Modified Examples of Embodiments 
     Note that, aithouch the viewing assistance portion is the camera  122  in the above-described embodiments, the viewing assistance portion may be another viewing assistance portion such as a mirror or the like for example. 
     As a modified example of the above-described fourth and fifth embodiments, there may be a structure in which a compression spring is used as the urging member for urging the nozzle ( 144 ,  166 ) in the direction of the stored position thereof ( 144 X,  166 X). Further, as a modified example of the above-described sixth embodiment, there may be a structure in which a compression spring is used as an urging member that urges the part ( 190 ) for nozzle rotation in the direction of decreasing the inserted amount of the inserted tube portion ( 190 A) of the part ( 190 ) for nozzle rotation in the first enlarged diameter portion ( 188 C) of the nozzle ( 186 ), and that is for suppressing rotation of the part ( 190 ) for nozzle rotation around the axis thereof. 
     Although examples of the present disclosure have been described above, the present disclosure is not limited to the above, and can, of course, be implemented by being modified various ways other than the above, within a scope that does not depart from the gist thereof. 
     Note that the disclosures of Japanese Patent Application No. 2019-094678 filed on May 20, 2019 and Japanese Patent Application No. 2019-094673 filed on May 20, 2019 are, in their entireties, incorporated by reference into the present specification. All publications, patent applications, and technical standards mentioned in the present specification are incorporated by reference into the present specification to the same extent as if such individual publication, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.