Patent Publication Number: US-2021162951-A1

Title: Defroster structure

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2019-217327, filed on Nov. 29, 2019, the entire contents of which are incorporated herein by reference. 
     FIELD 
     The embodiments discussed herein are related to a defroster structure. 
     Japanese Patent Application Laid-Open (JP-A) No. 2015-3605 discloses an invention related to a front defroster nozzle device. In order to blow air-conditioned air from an air conditioner out toward the windshield glass, this front defroster nozzle device has a front blow-out port that is provided at the vehicle front side of the top surface of the instrument panel, and a rear blow-out port that is provided at the vehicle rear side of the front blow-out port. The front blow-out port and the rear blow-out port blow air out in different directions. Due thereto, even in a case in which the vehicle transverse direction dimension of the defroster nozzle is limited due to another device, such as a head-up display device or the like, being provided at the top surface of the instrument panel, the function of removing fog that is on the windshield glass is ensured. 
     However, in the case of the structure disclosed in JP-A No. 2015-3605, the front blow-out port and the rear blow-out port are adjacent in the vehicle longitudinal direction. Therefore, at the portion where the air-conditioned airs, which are blown out in different directions from the respective blow-out ports, contact one another, there is the possibility that friction loss will arise and pressure loss will arise. In this case, by an amount corresponding to the amount of the pressure loss that arises (i.e., due to the pressure loss arising), it becomes difficult to for the air-conditioned air to reach far, and there is the possibility that fog in the vicinities of the vehicle transverse direction outer side portions of the windshield glass, which are at positions that are far from the front blow-out port and the rear blow-out port, will not be able to be removed efficiently. There is room for improvement over the above-described related art (i.e., the technique disclosed in the above-described publication) with regard to this point. 
     SUMMARY 
     In view of the above-described circumstances, an object of the present disclosure is to provide a defroster structure that can efficiently remove fog that is on a windshield glass. 
     A defroster structure relating to a first aspect includes: a blow-out port that is provided at a position that substantially faces a windshield glass of a vehicle, at a substantially central portion in a vehicle transverse direction of an instrument panel positioned at a front portion of a passenger compartment of a vehicle, and that blows out air-conditioned air that is from an air conditioner; a front-rear partitioning wall that is provided at an interior of the blow-out port, that extends in the vehicle transverse direction, and that partitions at least a portion of the interior of the blow-out port in a vehicle longitudinal direction; a first guide member that is provided further toward a vehicle front side than the front-rear partitioning wall, at a vehicle transverse direction outer side at the interior of the blow-out port, and that is inclined toward a vehicle transverse direction outer side while heading from a vehicle lower side toward a vehicle upper side; and a second guide member that is provided further toward a vehicle rear side than the front-rear partitioning wall, at the vehicle transverse direction outer side at the interior of the blow-out port, that is inclined toward a vehicle transverse direction outer side while heading from the vehicle lower side toward the vehicle upper side, and that has an angle of inclination with respect to a vertical direction which is the same as that of the first guide member. 
     In accordance with the defroster structure relating to the first aspect, the blow-out port is formed at a position that substantially faces the windshield glass, and at a substantially central portion in the vehicle transverse direction, at the instrument panel that is positioned at the front portion of the passenger compartment. The blow-out port blows out air-conditioned air that is from the air conditioner. The front-rear partitioning wall, the first guide member and the second guide member are provided at the interior of the blow-out port. Among these, the front-rear partitioning wall is provided at the interior of the blow-out port and extends along the vehicle transverse direction, and partitions at least a portion of the interior of the blow-out port in the vehicle longitudinal direction. Accordingly, adjustment of the flow of the air-conditioned air that flows through the interior of the blow-out port can be carried out by the front-rear partitioning wall. 
     The first guide member is provided further toward the vehicle front side than the front-rear partitioning wall and at a vehicle transverse direction outer side, at the interior of the blow-out port. On the other hand, the second guide member is provided further toward the vehicle rear side than the front-rear partitioning wall and at the vehicle transverse direction outer side, at the interior of the blow-out port. The first guide member and the second guide member respectively are inclined toward the vehicle transverse direction outer side while heading from the vehicle lower side toward the vehicle upper side, and the angles of inclination thereof with respect to the vertical direction are the same. Accordingly, the air-conditioned air, whose flow is adjusted by the first guide member of the blow-out port, and the air-conditioned air, whose flow is adjusted by the second guide member, are both blown out from the blow-out port toward the vehicle transverse direction outer side in the same direction. Therefore, at the portion where the air-conditioned air whose flow is adjusted by the first guide member and the air-conditioned air whose flow is adjusted by the second guide member contact one another, friction loss that arises due to the blow-out directions being different can be suppressed. Namely, because pressure loss of the air-conditioned air is reduced, the air-conditioned air can be blown out efficiently toward a vicinity of the vehicle transverse direction outer side portion of the windshield glass that is at a position that is relatively far from the blow-out port. 
     In a defroster structure relating to a second aspect, in the defroster structure of the first aspect, the second guide member is provided further toward the vehicle rear side than the first guide member. 
     In a defroster structure relating to a third aspect, in the defroster structure of the second aspect, the second guide member is provided further toward the vehicle rear side than the first guide member, with the front-rear partitioning wall located between the second guide member and the first guide member. 
     In a defroster structure relating to a fourth aspect, in the defroster structure of the second aspect, the second guide member is joined to the first guide member in the vehicle longitudinal direction. 
     In a defroster structure relating to a fifth aspect, in the defroster structure of the first aspect, first guide members are provided further toward a vehicle front side than the front-rear partitioning wall, at both respective vehicle transverse direction outer sides of the interior of the blow-out port, and second guide members are provided further toward a vehicle rear side than the front-rear partitioning wall, at both respective vehicle transverse direction outer sides of the interior of the blow-out port. 
     In a defroster structure relating to a sixth aspect, in the defroster structure of the first aspect, a left-right partitioning wall is provided at the interior of the blow-out port, the left-right partitioning wall is provided at a vehicle transverse direction inner side with respect to a vehicle transverse direction outer side edge portion of the blow-out port, and extends along the vehicle longitudinal direction between vehicle longitudinal direction edge portions of the blow-out port, the front-rear partitioning wall is provided at a vehicle transverse direction inner side of the left-right partitioning wall, and a vehicle transverse direction end portion of the front-rear partitioning wall is connected to the left-right partitioning wall, and the first guide member and the second guide member are disposed at a vehicle transverse direction outer side with respect to the left-right partitioning wall. 
     In a defroster structure relating to a seventh aspect, in the defroster structure of the fifth aspect, left-right partitioning walls are provided at the interior of the blow-out port, a pair of the left-right partitioning walls are provided at vehicle transverse direction inner sides with respect to a pair of vehicle transverse direction outer side edge portions of the blow-out port, and extend along the vehicle longitudinal direction between a pair of vehicle longitudinal direction edge portions of the blow-out port, the front-rear partitioning wall is provided between the pair of left-right partitioning walls, and both respective vehicle transverse direction end portions of the front-rear partitioning wall are connected to the left-right partitioning walls, and the first guide members and the second guide members are disposed at vehicle transverse direction outer sides with respect to the left-right partitioning walls. 
     In a defroster structure relating to an eighth aspect, in the defroster structure of the first aspect, a plurality of crosspiece portions, which are formed so as to be elongated along substantially the vehicle longitudinal direction and are lined up at an interval in substantially the vehicle transverse direction, are provided at a passenger compartment side opening of the blow-out port, and cross-sectional shapes, which are orthogonal to length directions, of the crosspiece portions are substantially rectangular, and a crosspiece portion that is positioned in a vicinity of the first guide member and the second guide member, is inclined such that, as seen in a vehicle front view, an angle, with respect to a vertical direction, of a long side of the cross-sectional shape is substantially the same as angles of inclination, with respect to the vertical direction, of the first guide member and the second guide member that are in the vicinity. 
     In a defroster structure relating to a ninth aspect, in the defroster structure of the first aspect, a plurality of crosspiece portions, which are formed so as to be elongated along substantially the vehicle longitudinal direction and are lined up at an interval in substantially the vehicle transverse direction, are provided at a passenger compartment side opening of the blow-out port, and a cross-sectional shape, which is orthogonal to a length direction, of at least a crosspiece portion that is positioned in a vicinity of the first guide member and the second guide member is a shape at which at least a vehicle lower side has a curved portion. 
     The defroster structure relating to the present disclosure can efficiently remove fog on the windshield glass. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic perspective view in which an instrument panel, which has a defroster structure relating to a first embodiment, is seen from a vehicle rear side. 
         FIG. 2  is a schematic perspective view showing a state in which a garnish of a blow-out port is removed in the defroster structure relating to the first embodiment. 
         FIG. 3  is an enlarged sectional view that is cut along line A-A of  FIG. 1  and shows a state in which the garnish is removed. 
         FIG. 4  is an enlarged sectional view that is cut along line B-B of  FIG. 1  and shows a state in which the garnish is removed. 
         FIG. 5  is an enlarged sectional view that is cut along line C-C of  FIG. 1  and shows a state in which the garnish is removed. 
         FIG. 6  is an enlarged sectional view in which portion Z in  FIG. 4  is shown in an enlarged manner. 
         FIG. 7  is a schematic perspective view showing a state in which a garnish of a blow-out port is removed in a defroster structure relating to a second embodiment. 
         FIG. 8  is an enlarged sectional view, corresponding to  FIG. 6 , of the defroster structure relating to the second embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     First Embodiment 
     A defroster structure  10  relating to a first embodiment is described hereinafter on the basis of  FIG. 1  through  FIG. 6 . Note that arrow FR, arrow UP and arrow OUT the are shown appropriately in the respective drawings indicate the forward direction (e.g., the advancing direction), the upward direction, and an outer side in the vehicle transverse direction, respectively, of a vehicle. Hereinafter, when explanation is given by using merely longitudinal, left-right and vertical directions, they refer to the longitudinal of the vehicle longitudinal direction, the left and right of the vehicle left-right direction (the vehicle transverse direction), and upward and downward in the vehicle vertical direction, unless otherwise specified. 
     (Overall Structure) 
     As shown in  FIG. 1 , an instrument panel  16  is provided at the front portion of interior of a passenger compartment  14  of a vehicle  12 . The instrument panel  16  is disposed at the upper portion side of the vehicle rear side of a dash panel (not illustrated) that separates (i.e., partitions) the passenger compartment  14  and the vehicle front portion. The lower end portion of the dash panel is connected to the front end portion of an unillustrated floor panel, and the floor panel structures the lower surface of the passenger compartment  14 . An unillustrated cowl is connected to the upper end portion of the dash panel. The cowl supports the lower end portion of a windshield glass  18 . The windshield glass  18  structures the front surface of the upper portion side of the passenger compartment  14 . The lower end portion side of the windshield glass  18  is disposed at a front end portion  16 A side of the instrument panel  16 . 
     Vehicle seats  20  that are the front seats of the vehicle are provided at the vehicle rear side of the instrument panel  16 . In the first embodiment, the vehicle seat  20  at the left side of the front portion of the passenger compartment  14  is the front passenger&#39;s seat, and the vehicle seat  20  at the right side of the front portion of the passenger compartment  14  is the driver&#39;s seat. 
     (Instrument Panel) 
     The instrument panel  16  is structured as an interior panel member that is made of resin and extends along the vehicle transverse direction. An instrument panel reinforcement (not illustrated) that is elongated along the vehicle transverse direction is disposed at the upper portion of the inner portion (e.g., the vehicle front side) of the instrument panel  16 . The instrument panel  16  is supported by the instrument panel reinforcement at a plurality of places. Note that the instrument panel reinforcement is, as an example, a pipe member that is made of metal, and the length direction both end portions thereof are fixed to the vehicle lower sides of a pair of front pillars  22  (e.g., left and right frame portions, the left side front pillar being omitted from  FIG. 1 ) that are provided upright at the left and right vehicle body side portions. 
     (Head-Up Display Device) 
     A head-up display device  28  is provided at the interior of the instrument panel  16  at the driver&#39;s seat side. Concretely, the head-up display device  28  is provided at the interior of an opening portion  16 B that is formed in the front end portion  16 A at a top surface  16 C at the driver&#39;s seat side of the instrument panel  16 . The opening portion  16 B opens toward the vehicle upper side. A display, which emits an emitted light image that serves as emitted light for information display and which is connected to a display control device so as to be able to communicate therewith, and a reflecting mirror, which reflects the emitted light image from the display, are provided within the head-up display device  28  (neither the display nor the reflecting mirror is shown in the drawings). The display is disposed at the vehicle longitudinal direction rear portion of the interior of the head-up display device  28 , and emits the emitted light image toward the vehicle front side. The display has a light source that is formed from light-emitting diodes or the like. 
     The reflecting mirror is disposed at the vehicle longitudinal direction front side, which faces the display, of the interior of the head-up display device  28 . As an example, the reflecting mirror is a concave mirror that is disposed so as to be concave toward the display. As seen in a vehicle side view, the reflecting mirror is disposed at an incline such that the upper portion thereof is at the vehicle front side and the lower portion thereof is at the vehicle rear side. Due thereto, the emitted light image from the display is, at the reflecting mirror, reflected toward an obliquely vehicle upper rear side, and the reflected image is enlarged. 
     The emitted light image that is reflected at the reflecting mirror is projected onto the windshield glass  18  via a transparent cover member  28 A that is mounted to the opening portion  16 B formed in the top surface  16 C of the instrument panel  16 . Due thereto, the emitted light image from the display is guided to the reflecting mirror, and the emitted light image that is reflected and enlarged by the reflecting mirror is projected into projection area S, in which information is displayed and that is demarcated by the two-dot chain line shown in  FIG. 1 , of the windshield glass  18 . Note that, as an example, the head-up display device  28  displays one or more of the traveling speed of the vehicle  12 , a display that guides the vehicle  12  to the destination, the speed limit of the road, and the like, in the projection area S of the windshield glass  18 . 
     (Defroster) 
     A defroster  32  is provided at the substantially central portion in the vehicle transverse direction of the instrument panel  16 . The defroster  32  has a blow-out port  34  and a duct  36  (see  FIG. 3 ). The blow-out port  34  is formed so as to open toward the vehicle upper side, in the front end portion  16 A of the top surface  16 C of the substantially central portion in the vehicle transverse direction of the instrument panel  16 . A garnish  38  that has a plurality of crosspiece portions  38 A is mounted from the vehicle upper side to the blow-out port  34  at a passenger compartment side opening that is described later. 
     As shown in  FIG. 3 , the duct  36  extends toward the vehicle lower side from the blow-out port  34 , and is formed in a hollow shape and in a shape in which, when seen in a vehicle side view, the substantially central portion thereof in the vehicle vertical direction is curved toward the vehicle front side. Concretely, the duct  36  has a front wall portion  36 A and a rear wall portion  36 B that are disposed so as to face one another in the vehicle longitudinal direction. Moreover, the duct  36  has a pair of side wall portions  36 C,  36 D that face one another and connect the vehicle transverse direction end portions of the front wall portion  36 A and the rear wall portion  36 B together (see  FIG. 4 ). The pair of side wall portions  36 C,  36 D are inclined (i.e., tilted) in directions of moving apart from one another while heading toward the vehicle upper side. The air blowing path of the duct  36  is structured by the side wall portions  36 C,  36 D, the front wall portion  36 A and the rear wall portion  36 B. Due thereto, at the front wall portion  36 A and the rear wall portion  36 B of the duct  36 , the regions thereof from the substantially central portions in the vehicle vertical direction toward the vehicle upper side are inclined toward the vehicle rear side while heading toward the vehicle upper side, and the regions thereof from the substantially central portions in the vehicle vertical direction toward the vehicle lower side are inclined toward the vehicle rear side while heading toward the vehicle lower side. 
     A front-rear partitioning wall  36 E is provided at the duct  36  at the substantially central portion thereof in the vehicle longitudinal direction. The front-rear partitioning wall  36 E extends along the vehicle transverse direction, with the plate thickness direction thereof being the substantially vehicle longitudinal direction. Namely, the front-rear partitioning wall  36 E is a structure that partitions the duct  36  into a front portion and a rear portion in the vehicle longitudinal direction. The unillustrated vehicle transverse direction end portions of the front-rear partitioning wall  36 E are connected to the side wall portion  36 C and the side wall portion  36 D, respectively. As seen in a vehicle side view, the front-rear partitioning wall  36 E is formed in a shape that is similar to those of the front wall portion  36 A and the rear wall portion  36 B. Namely, the front-rear partitioning wall  36 E is formed in a shape in which, as seen in a vehicle side view, the substantially central portion thereof in the vehicle vertical direction is bent toward the vehicle front side, and the front-rear partitioning wall  36 E is disposed parallel to the front wall portion  36 A and the rear wall portion  36 B. Due thereto, there is a structure in which the interior of the duct  36  is divided into a front side flow path  37  that is at the vehicle front side and a rear side flow path  39  that is at the vehicle rear side. 
     The duct  36  is connected to an air conditioner  40  that is shown in  FIG. 1 . As an example, the air conditioner  40  is disposed at the vehicle front side and lower side of the instrument panel  16  of the vehicle  12 . The air conditioner  40  has an unillustrated blower. An air flow is formed due to the blower being operated. For example, an evaporator, a heater core (neither of which is illustrated) and the like are provided at the downstream side of the airflow with respect to the blower, such that conditioned air, in which the temperature, the humidity and the like of the airflow have been adjusted, is generated. This airflow passes-through the interior of the duct  36 , which is connected to a defroster mode exit  40 A of the air conditioner  40  shown in  FIG. 3 , and is blown out from the blow-out port  34  to the exterior as air-conditioned air. Note that the air-conditioned air from the air conditioner  40  flows through the front side flow path  37  and the rear side flow path  39 , respectively, at the interior of the duct  36 . Further, in addition to the blow-out port  34 , air conditioning ducts, which are connected to unillustrated blow-out ports that are provided at various positions within the passenger compartment  14 , also are connected to the air conditioner  40 . The air conditioner  40  is connected to an unillustrated control device so as to be able to communicate therewith. The air conditioner  40  can blow air-conditioned air of different temperatures and volumes to each of the blow-out port  34  and the other blow-out ports in accordance with instructions from the control device. 
     (First Guide Members) 
     As shown in  FIG. 2  and  FIG. 4 , a pair of left and right first guide members  42  is provided at the vehicle upper side of the interior of the blow-out port  34 . The first guide members  42  are provided further toward the vehicle front side than the front-rear partitioning wall  36 E at the interior of the blow-out port  34 , and at the vehicle transverse direction outer sides of the interior of the blow-out port  34 . As an example, the first guide members  42  are structured by one first guide fin  42 A at the left and the right respectively. 
     The first guide fins  42 A are structured by plate-shaped members whose length directions are the vehicle longitudinal direction and whose plate-thickness directions are the substantially vehicle transverse direction, and are inclined toward the vehicle transverse direction outer sides from the vehicle lower side toward the vehicle upper side. Further, the unillustrated front end portions in the vehicle longitudinal direction of the first guide fins  42 A are connected (i.e., joined) to a front wall portion  36 A of the duct  36 , and the rear end portions are connected (i.e., joined) to the front-rear partitioning wall  36 E. 
     (Second Guide Members) 
     As shown in  FIG. 2  and  FIG. 5 , a pair of left and right second guide members  44  is provided at the vehicle upper side of the interior of the blow-out port  34 . The second guide members  44  are provided further toward the vehicle rear side than the front-rear partitioning wall  36 E at the interior of the blow-out port  34 , and at the vehicle transverse direction outer sides of the interior of the blow-out port  34  (see  FIG. 2 ). As an example, the second guide members  44  are structured by one second guide fin  44 A at the left and the right respectively. 
     In the same way as the above-described first guide fins  42 A, the second guide fins  44 A are structured by plate-shaped members whose length directions are the vehicle longitudinal direction and whose plate-thickness directions are the substantially vehicle transverse direction, and are inclined toward the vehicle transverse direction outer sides from the vehicle lower side toward the vehicle upper side. Further, the unillustrated front end portions in the vehicle longitudinal direction of the second guide fins  44 A are connected (i.e., joined) to the front-rear partitioning wall  36 E of the duct  36 , and the rear end portions are connected (i.e., joined) to the rear wall portion  36 B of the duct  36 . As shown in  FIG. 2 , as seen in a vehicle front view, the angles of inclination of the second guide fins  44 A with respect to the vertical direction are the same as those of the first guide fins  42 A. Here, “the same” of course includes exactly the same, but also is used in the sense of including cases in which there is dispersion in terms of manufacturing and/or machining. The second guide fins  44 A are disposed at the vehicle rear sides of the first guide fins  42 A, with the front-rear partitioning wall  36 E located therebetween. In other words, the first guide fin  42 A and the second guide fin  44 A are disposed continuously with the front-rear partitioning wall  36 E therebetween. 
     A plurality of air direction adjusting fins  46  are provided between the pair of left and right second guide members  44 . In the same way as the second guide fins  44 A, the air direction adjusting fins  46  are structured by plate-shaped members whose length directions are the vehicle longitudinal direction and whose plate-thickness directions are the substantially vehicle transverse direction. The air direction adjusting fins  46  are inclined with the respective angles of inclination thereof, with respect to the vertical direction, being different than those of the second guide fins  44 A of the second guide members  44 . The angles of inclination of the air direction adjusting fins  46  are set by being adjusted appropriately per vehicle. As an example, in the first embodiment, the air direction adjusting fins  46  at the vehicle transverse direction center of the blow-out port  34  are substantially vertical, and the angles of inclination, with respect to the vertical direction, of the air direction adjusting fins  46  become greater the further toward the vehicle transverse direction outer sides. Similarly, the plurality of air direction adjusting fins  46 , whose angles of inclination with respect to the vertical direction are set to respectively different angles, are provided also between the pair of left and right first guide members  42 . 
     (Garnish) 
     As shown in  FIG. 1 , the garnish  38  is formed substantially in the shape of a rectangular frame that has the plurality of crosspiece portions  38 A that are disposed so as to be lined-up at a predetermined interval in the vehicle transverse direction. The crosspiece portions  38 A are formed so as to be elongated in the vehicle longitudinal direction, and, as shown in  FIG. 6 , the cross-sectional shapes thereof orthogonal to the length directions are substantially rectangular. Further, the crosspiece portions  38 A, which are positioned in vicinities of the first guide members  42  and the second guide members  44 , i.e., at the vehicle transverse direction outer sides, are inclined at angles that are different than those of the crosspiece portions  38 A at the other regions in the vehicle transverse direction (see  FIG. 6 ). Concretely, the crosspiece portions  38 A that are positioned at the vehicle transverse direction outer sides (e.g., three of the crosspiece portions  38 A at each of the left side and the right side) are inclined such that the angles, with respect to the vertical direction, of long-side surfaces  38 AA,  38 AB, which correspond to the long sides as seen in cross-section, are substantially the same as the angles, with respect to the vertical direction, of the first guide fins  42 A and the second guide fins  44 A. Namely, short-side surfaces  38 AC,  38 AD, which correspond to the short sides as seen in cross-section, at the crosspiece portions  38 A that are positioned at the vehicle transverse direction outer sides, are oriented orthogonally to the air-conditioned air that flows along the first guide fins  42 A and the second guide fins  44 A. Here, “the same” of course includes exactly the same, but also is used in the sense of including cases in which there is dispersion in terms of manufacturing and/or machining. Further, “substantially the same” also includes cases that are slightly offset from the aforementioned “the same”. For example, “substantially the same” may also include cases in which the difference between the angles of the long-side surfaces  38 AA,  38 AB with respect to the vertical direction, and the angles of the first guide fins  42 A and the second guide fins  44 A with respect to the vertical direction, is within 5°. Further, the crosspiece portions  38 A which are other than the crosspiece portions  38 A that are positioned at the vehicle transverse direction outer sides (i.e., the crosspiece portions  38 A that are at the central portion side in the vehicle transverse direction), are disposed such that the respective long-side surfaces  38 AA,  38 AB thereof are oriented parallel to the vertical direction. 
     (Operation/Effects of First Embodiment) 
     Operation and effects of the first embodiment are described next. 
     In the first embodiment, as shown in  FIG. 1 , the blow-out port  34  is formed at the substantially central portion in the vehicle transverse direction and at a position that substantially faces the windshield glass  18 , of the instrument panel  16  that is positioned at the front portion of the passenger compartment  14 . This blow-out port  34  blows out air-conditioned air that is from the air conditioner  40 . Further, the front-rear partitioning wall  36 E, the first guide members  42  and the second guide members  44  are provided at the interior of the blow-out port  34 . Among these, the front-rear partitioning wall  36 E is provided at the substantially central portion in the vehicle longitudinal direction at the interior of the blow-out port  34 , and extends in the vehicle transverse direction. Accordingly, by the front-rear partitioning wall  36 E, it is easy to adjust the flow of air-conditioned air that flows through the substantially central portion in the vehicle longitudinal direction of the blow-out port  34 . 
     Further, as shown in  FIG. 2 , the first guide members  42  are respectively provided at the interior of the blow-out port  34 , at further toward the vehicle front side than the front-rear partitioning wall  36 E and at the vehicle transverse direction outer sides. On the other hand, the second guide members  44  are respectively provided at the interior of the blow-out port  34 , at further toward the vehicle rear side than the front-rear partitioning wall  36 E and at the vehicle transverse direction outer sides. The first guide members  42  and the second guide members  44  are respectively inclined toward the vehicle transverse direction outer sides while heading from the vehicle lower side toward the vehicle upper side, and the angles of inclination thereof with respect to the vertical direction are the same. Accordingly, the air-conditioned air whose flow is adjusted by the first guide member  42  of the blow-out port  34  and the air-conditioned air whose flow is adjusted by the second guide member  44  are blown out from the blow-out port  34  toward the vehicle transverse direction outer side in the same direction. Therefore, at the portion where the air-conditioned air whose flow is adjusted by the first guide member  42  and the air-conditioned air whose flow is adjusted by the second guide member  44  contact one another, friction loss that arises due to the blow-out directions being different can be suppressed. Namely, because pressure loss of the air-conditioned air is reduced, the air-conditioned air can be blown out efficiently toward vicinities of the vehicle transverse direction outer side portions of the windshield glass  18  that are at positions that are relatively far from the blow-out port  34 . Due thereto, fog on the windshield glass  18  can be removed efficiently. 
     Moreover, at the passenger compartment side opening thereof, the blow-out port  34  has the plurality of crosspiece portions  38 A. The plurality of crosspiece portions  38 A are formed so as to be elongated in the vehicle longitudinal direction, and are lined-up substantially in the vehicle transverse direction. Accordingly, entry of foreign matter from the exterior into the interior of the blow-out port  34  can be suppressed. Further, as shown in  FIG. 6 , the cross-sectional shapes, orthogonal to the length directions, of the crosspiece portions  38 A are substantially rectangular. Moreover, the crosspiece portions  38 A, which are positioned in a vicinity of the first guide member  42  and the second guide member  44 , are inclined such that, as seen in a vehicle front view, the angles, with respect to the vertical direction, of the long sides of the cross-sectional shapes thereof are substantially the same as the angles of inclination, with respect to the vertical direction, of the first guide member  42  and the second guide member  44  that are in the vicinity thereof. In other words, the crosspiece portions  38 A, which are positioned in a vicinity of the first guide member  42  and the second guide member  44 , are tilted such that, as seen in a vehicle front view, the long sides of the cross-sectional shapes thereof are substantially parallel to the directions of extension of the first guide member  42  and second guide member  44  that are in the vicinity thereof. Namely, the long sides of the cross-sectional shapes of the crosspiece portions  38 A are substantially parallel to the direction of the flow of the air-conditioned air that is blown out along the first guide member  42  and the second guide member  44 . Therefore, the crosspiece portions  38 A impeding the flow of air-conditioned air can be suppressed. Due thereto, the efficient removal of fog on the windshield glass  18 , and a suppression of foreign matter falling into the blow-out port  34 , can both be realized. 
     Second Embodiment 
     A defroster structure relating to a second embodiment of the present disclosure is described next by using  FIG. 7  and  FIG. 8 . Note that structural portions that are the same as those of the above-described first embodiment and the like are denoted by the same reference numerals, and description thereof is omitted. 
     The basic structure of the defroster structure relating to the second embodiment is similar to that of the first embodiment. However, the defroster structure relating to the second embodiment has the feature that left-right partitioning walls  60  are provided in addition to a front-rear partitioning wall  62  at the interior of the blow-out port  34 . 
     (Left-Right Partitioning Walls) 
     Namely, as shown in  FIG. 7 , the pair of left and right left-right partitioning walls  60  are provided at the vehicle transverse direction outer sides of the interior of the duct  36 . The plate-thickness directions of the left-right partitioning walls  60  are the vehicle transverse direction, and the left-right partitioning walls  60  extend substantially along the vehicle longitudinal direction. Namely, the left-right partitioning walls  60  are structures that partition the duct  36  into a left portion and a right portion in the vehicle transverse direction. Unillustrated vehicle longitudinal direction end portions of the left-right partitioning walls  60  are connected (i.e., joined) to the front wall portion  36 A and the rear wall portion  36 B (see  FIG. 3 ), respectively. The left-right partitioning walls  60  are disposed at the vehicle transverse direction inner sides of vehicle transverse direction outer side edge portions  34 A of the blow-out port  34 , respectively. Moreover, although not illustrated, as seen in a vehicle front view, the left-right partitioning walls  60  extend substantially parallel to the side wall portion  36 C or the side wall portion  36 D of the duct  36  (see  FIG. 4  and  FIG. 5 ). 
     (Front-Rear Partitioning Wall) 
     The front-rear partitioning wall  62  is provided at the substantially central portion in the vehicle longitudinal direction of the duct  36 . The front-rear partitioning wall  62  extends along the vehicle transverse direction, with the plate thickness direction thereof being the substantially vehicle longitudinal direction. Namely, the front-rear partitioning wall  62  is a structure that partitions the duct  36  into a front portion and a rear portion in the vehicle longitudinal direction. The unillustrated vehicle transverse direction end portions of the front-rear partitioning wall  62  are connected (i.e., joined) to the left-right partitioning walls  60 , respectively. As seen in a vehicle side view, the front-rear partitioning wall  62  is formed in a shape that is similar to the front wall portion  36 A and the rear wall portion  36 B. Namely, the front-rear partitioning wall  62  is formed in a shape in which the substantially central portion in the vehicle vertical direction is bent toward the vehicle front side as seen in a vehicle side view, and the front-rear partitioning wall  62  is disposed parallel to the front wall portion  36 A and the rear wall portion  36 B as seen in a vehicle side view. Due to the above-described structure, the front-rear partitioning wall  62  and the left-right partitioning walls  60  are formed integrally, and the shape thereof is a substantial H-shape as seen in a vehicle plan view. Therefore, there is a structure in which the interior of the duct  36  is divided into a pair of left and right side flow paths  64  at the vehicle transverse direction outer sides, and a front flow path  66  that is provided between the pair of side flow paths  64  and is disposed at the vehicle front side, and a rear flow path  68  that is provided between the pair of side flow paths  64  and is disposed at the vehicle rear side. In other words, this is a structure in which the front-rear partitioning wall  62  does not exist at the side flow paths  64 . 
     (First Guide Members and Second Guide Members) 
     First guide members  70  and second guide members  72  that are provided as pairs at the left and the right are provided at the vehicle upper side of the interior of the blow-out port  34 . In the second embodiment, as an example, regions, which are further toward the vehicle front side than imaginary line B shown by the two-dot chain line in  FIG. 7 , are the first guide members  70 , and regions, which are further toward the vehicle rear side than the imaginary line B, are the second guide members  72 . In other words, the second guide members  72  are provided further toward the vehicle rear side than the first guide members  70 , and the second guide members  72  and the first guide members  70  are structured so as to be continuous. Further, the basic structures of the first guide members  70  and the second guide members  72  are similar to those of the first guide members  42  and the second guide members  44  of the first embodiment. The first guide members  70  and the second guide members  72  are provided respectively within the pair of left and right side flow paths  64  that are within the duct  36 . Further, the first guide member  70  and the second guide member  72  are joined in the vehicle longitudinal direction. Note that the first guide member  70  and the second guide member  72  are structured by an integral member. 
     Note that the plurality of air direction adjusting fins  46  are provided respectively at the front flow path  66  and the rear flow path  68  that are between the pairs of left and right first guide members  70  and second guide members  72 . 
     (Garnish) 
     In the same way as the garnish  38  of the first embodiment, a garnish  74  is formed in a substantially rectangular frame shape that has the plurality of crosspiece portions  74 A that are disposed so as to be lined-up in the vehicle transverse direction at a predetermined interval (see  FIG. 1 ). The crosspiece portions  74 A are formed so as to be elongated in the vehicle longitudinal direction, and, as shown in  FIG. 8 , the cross-sectional shapes thereof, which are orthogonal to the length directions, are formed to be substantially rectangular. Further, curved portions  74 AA are formed at the crosspiece portions  74 A at the vehicle lower side regions thereof as seen in cross-section. For example, at the crosspiece portions  74 A that are at the vehicle transverse direction outer sides, the curved portions  74 AA are curved toward the vehicle transverse direction inner side. Although not illustrated, at the crosspiece portions  74 A that are disposed at other than the vehicle transverse direction outer sides (i.e., that are disposed at the vehicle transverse direction central side), for example, the curved portions  74 AA may be curved toward the vehicle transverse inner side, or may be curved toward the vehicle rear side. 
     (Operation/Effects of Second Embodiment) 
     Operation and effects of the second embodiment are described next. 
     In accordance with the above-described structure as well, effects that are similar to those of the first embodiment are achieved because the structure is similar to that of the defroster structure  10  of the first embodiment other than the point that the left-right partitioning walls  60  are provided at the interior of the blow-out port  34 . Further, the pair of left and right left-right partitioning walls  60  is provided at the interior of the blow-out port  34 . The left-right partitioning walls  60  are respectively provided at the vehicle transverse direction inner sides of the vehicle transverse direction outer side edge portions  34 A of the blow-out port  34 , and extend along the vehicle longitudinal direction between the vehicle longitudinal direction edge portions of the blow-out port  34  that face one another. The front-rear partitioning wall  62  is provided between the pair of left and right left-right partitioning walls  60 . The vehicle transverse direction both end portions of the front-rear partitioning wall  62  are connected to the left-right partitioning walls  60 , respectively. Further, the first guide members  70  and the second guide members  72  are disposed at the vehicle transverse direction outer sides of the left-right partitioning walls  60 . Namely, there is a structure in which the front-rear partitioning wall  62  is not provided between the vehicle transverse direction outer side edge portions  34 A of the blow-out port  34  and the left-right partitioning walls  60 . Accordingly, it is possible to prevent an increase in pressure loss that is due to the air-conditioned air, which is blown out from between the vehicle transverse direction outer side edge portions  34 A of the blow-out port  34  and the left-right partitioning walls  60 , contacting the front-rear partitioning wall  62 . Due thereto, fog on, in particular, the vehicle transverse direction outer side portions of the windshield glass  18  can be removed efficiently. 
     Moreover, at the passenger compartment side opening thereof, the blow-out port  34  has the plurality of crosspiece portions  74 A. The plurality of crosspiece portions  74 A are formed in shapes that are elongated in the vehicle longitudinal direction, and are lined-up substantially in the vehicle transverse direction. Accordingly, entry of foreign matter from the exterior into the interior of the blow-out port  34  can be suppressed. Further, the cross-sectional shapes, which are orthogonal to the length directions, of the crosspiece portions  74 A are shapes in which at least the vehicle lower sides thereof have the curved portions  74 AA. Accordingly, the air-conditioned air that is blown out along the first guide members  70  and the second guide members  72  flows along the curved portions  74 AA, and therefore, the crosspiece portions  74 A impeding the flow of air-conditioned air can be suppressed. Due thereto, the efficient removal of fog on the windshield glass  18 , and a suppression of falling of foreign matter into the blow-out port, can both be realized. 
     Note that, although the second embodiment is structured such that the curved portions  74 AA are provided at the vehicle lower sides of all of the crosspiece portions  74 A of the garnish  74 , the present disclosure is not limited to this. For example, there may be a structure in which the curved portions  74 AA are provided only at the crosspiece portions  74 A that are disposed in vicinities of the first guide members  70  and the second guide members  72 . Further, although there is a structure in which the curved portions  74 AA are provided at the vehicle lower sides of the crosspiece portions  74 A, the present disclosure is not limited to this, and there may be a structure in which the curved portions  74 AA are provided also at regions that are other than the vehicle lower sides of the crosspiece portions. Moreover, in the second embodiment, the left-right partitioning walls  60  are provided at both vehicle transverse direction outer sides (i.e., the left and right both sides), but the present disclosure is not limited to this, and may be a structure in which, for example, the left-right partitioning wall is provided at either one of the vehicle transverse direction outer sides. 
     Further, in the above-described first and second embodiments, there is a structure in which one of each of the first guide members  42 ,  70  and the second guide members  44 ,  72  is provided at each of the left and the right. However, the present disclosure is not limited to this. For example, there may be a structure in which one of the first guide members is provided and one of the second guide members is provided at either one of the vehicle transverse direction outer sides. Further, for example, there may be a structure in which a plurality of the first guide members  42 ,  70  and the second guide members  44 ,  72  are provided respectively at the left and the right at the vehicle transverse direction outer sides. 
     Moreover, although there is a structure in which the garnish  38 ,  74  is provided at the blow-out port  34 , the present disclosure is not limited to this. For example, there may be a structure in which the garnish  38 ,  74  is not provided, and the falling of foreign matter into the blow-out port  34  is suppressed by the first guide members  42 ,  70 , the second guide members  44 ,  72  and the air direction adjusting fins  46 . Further, in the structure of the first embodiment, the plurality of crosspiece portions  74 A may be provided instead of the plurality of crosspiece portions  38 A. Moreover, in the structure of the second embodiment, the plurality of crosspiece portions  38 A may be provided instead of the plurality of crosspiece portions  74 A. 
     Although embodiments of the present disclosure have been described above, the present disclosure is not limited to the above, and, of course, may be implemented by being modified in various ways other than the above, within a scope that does not depart from the gist thereof. 
     Note that the disclosure of Japanese Patent Application No. 2019-217327 filed on Nov. 29, 2019 is, in its entirety, 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.