JP6114045B2 - Wind direction changing device and air conditioner having the same - Google Patents

Description

  The present invention relates to a wind direction changing device including a plurality of wind direction plates provided at an air outlet and an air conditioning device including the same.

  2. Description of the Related Art Conventionally, a wind direction changing device for changing a wind direction to the left or right is installed at an air outlet of an indoor unit or the like of an air conditioner. The wind direction changing device is connected to a plurality of wind direction plates that are rotatable about a rotation axis that is substantially orthogonal to the lateral direction of the air outlet and a connecting portion formed at the lower end of the blade portion of each wind direction plate. It is equipped with an interlocking rod that rotates the wind direction plate in an interlocking manner.

  As another form of the wind direction plate, as shown in Patent Document 1, there is known one using a vertical flap including a soft portion and a hard portion without providing a rotation shaft. This vertical flap is a soft part whose middle part is made of a soft material, both end parts are hard parts made of a hard material, one hard part is fixed to the wall surface constituting the outlet, and the other A shaft portion for connecting the connecting member is formed at the side end of the hard portion.

  In the vertical flap described in Patent Document 1, when a force is applied to the hard portion in the left-right direction by the connecting member, the soft portion bends to form a smooth curved surface as the vertical flap. The contacted airflow can smoothly change the direction of the wind along the curved surface of the vertical flap, and the airflow can be efficiently blown from the air outlet to a distance.

JP 09-196457 A

  By the way, in the vertical flap described in Patent Document 1, in order to maintain the wind direction of the vertical flap changed by swinging the knob 47 in the horizontal direction, the bearing 45 with the locking function and the rotating shaft 49 with the locking function. (See paragraphs 0022 and 0023), the vertical flap mounting structure is complicated, and the vertical flap mounting is complicated and takes time.

  Therefore, in the present invention, in order to solve the above problems, the changed direction of the wind direction plate can be held without using a functional member as in Patent Document 1, and the wind direction changing device excellent in assembly workability and productivity. And it aims at providing an air conditioner provided with the same.

  In order to solve the above problems, a wind direction changing device according to the present invention includes a plurality of wind direction plates erected on a substrate at intervals in the left-right direction, an interlocking rod for interlocking the wind direction plates, An engagement piece provided on one member of the substrate and the interlocking rod, a holding portion provided on the other member for engaging and holding the engagement piece movably in the left-right direction, and the holding portion. And a retaining portion that prevents the engagement piece from coming off, and the retaining portion is formed integrally with at least one of the holding portion and the other member.

  According to the present invention, since the retaining portion is integrally formed with respect to at least one of the holding portion and the member provided with the retaining portion, relative displacement between the retaining portion and the retaining portion is prevented, It is possible to prevent the engagement piece from coming out of the holding portion.

The perspective view of the state in which the blower outlet was closed with the indoor unit of the air conditioner which shows embodiment of this invention FIG. 1 is an external perspective view of the indoor unit shown in FIG. Appearance perspective view of louver unit Exploded perspective view of louver unit FIG. 3 is an external perspective view of a louver unit at an angle different from that of FIG. 5 is an exploded perspective view of FIG. AA sectional view in FIG. Perspective view of wind direction change device Exploded perspective view of wind direction change device BB sectional view of FIG. Partial enlarged view of FIG. The figure which shows embodiment different from the holding | maintenance part of FIG. The schematic diagram which shows the connecting rod of 2nd Example

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of an air conditioner indoor unit with a blower outlet closed as viewed from below, and FIG. 2 is an external view of the air conditioner indoor unit with a blower outlet open as viewed from below. FIG. 3 is an external perspective view of the louver unit constituting the air outlet, FIG. 4 is an exploded perspective view of the louver unit, and FIG. 5 is an external perspective view of the louver unit from an angle different from FIG. 6 is an exploded perspective view of FIG. 5, and FIG. 7 is a cross-sectional view taken along line AA of FIG.

  As shown in FIG. 7, the indoor unit includes a heat exchanger 1 and a fan 2, and these are housed in a cabinet 3. A suction port 4 is formed on the top surface of the cabinet 3, and an air outlet 5 is formed on the lower front surface of the cabinet 3. Inside the cabinet 3, an air passage 6 extending from the upstream suction port 4 to the downstream outlet 5 is formed, and the heat exchanger 1 and the fan 2 are disposed in the air passage 6.

  A filter 7 is disposed between the suction port 4 and the heat exchanger 1 to remove dust from the indoor air sucked from the suction port 4. As shown in FIG.1 and FIG.2, the wind guide panel 8 is attached to the front surface of the blower outlet 5 so that rotation is possible, and the direction of the wind which blows off from the blower outlet 5 can be changed to an up-down direction. A wind direction plate (vertical louver) 9 is provided on the upstream side of the wind guide panel 8. The wind direction plate 9 can change the wind direction in the left-right direction.

  In the air conditioner, an outdoor unit (not shown) is installed outside the indoor unit. The outdoor unit includes a compressor, a heat exchanger, a four-way valve, an outdoor fan, and the like, and these and the indoor heat exchanger 1 form a refrigeration cycle. And the control apparatus which controls a refrigerating cycle is provided in an indoor unit. A control device including a microcomputer controls the refrigeration cycle based on a user instruction and detection signals of various sensors such as a temperature sensor for detecting outdoor or outdoor temperature, and performs an air conditioning operation. At this time, the control device controls driving of the fan motor and opening / closing of the wind guide panel 8 according to the cooling / heating operation.

  As shown in FIGS. 1, 2, and 7, the cabinet 3 is separable into a back plate 10 and a front panel 11 that covers the front side of the back plate 10. An opening 12 for inserting and removing the filter 7 is formed in the upper front portion of the front panel 11, and a front cover 13 covering the opening 12 is detachably attached to the front panel 11.

  As shown in FIGS. 3 to 7, the peripheral member of the air outlet 5 is unitized to constitute a louver unit 16. More specifically, the louver unit 16 is formed in a frame shape, and the wide left and right space surrounded by the louver unit 16 serves as the air outlet 5.

  The upper surface portion of the louver unit 16 is constituted by the drain pan 14, and the lower surface portion 19 of the louver unit is constituted by the distal end portion of the rear guider 15. Two wind direction changing devices 17 are detachably attached to the lower surface portion 19 of the louver unit. The substrate 18 of the wind direction changing device 17 is fitted into the concave substrate accommodating portions 19a and 19a formed on the lower surface portion 19 of the louver unit, so that the surface of the substrate 18 and the surface of the lower surface portion 19 of the louver unit are substantially planes. The tip of the rear guider 15 is configured by both.

  The lower surface portion 19 has a shape such that a resin sheet having a constant thickness is appropriately formed for weight reduction. Specifically, as shown in FIG. 6, when the lower surface portion 19 is viewed from below, the substrate housing portion 19 a has a shape protruding in a convex shape from the other portions. Ribs 20 having the same height as that of the substrate housing portion 19a are formed in a lattice shape at portions other than the substrate housing portion 19a. The reason why the rib 20 is formed in this way is as follows.

  That is, since the lower surface portion 19 is likely to become a low temperature during cooling or the like, a heat insulating material is attached to the back surface of the lower surface portion 19 in order to enhance heat insulation and prevent condensation on the back surface side of the lower surface portion 19. . Conventionally, the shape of the back surface side of the lower surface portion 19 is formed by bending the sheet-like heat insulating material in accordance with the back surface shape of the lower surface portion 19 while leaving the protrusion by the substrate housing portion 19a as it is, and then applying the heat insulating material to the lower surface with an adhesive. It was made to stick on the back surface of the part 19.

  In this case, the heat insulating material at the stepped portion of the back surface of the lower surface portion 19 is easily peeled off. When dew condensation occurs in the gap generated by the delamination, dew condensation water weakens the adhesive strength of the adhesive, and further the delamination of the heat insulating material proceeds. In this way, peeling between the lower surface portion 19 and the heat insulating material progresses, and there is a risk that the occurrence of condensation will increase with time.

  In the present invention, in consideration of the above matters, lattice-like ribs 20 having the same height as the substrate housing portion 19a are provided on the back surface of the lower surface portion 19, and the heat insulating material 36 is attached to the back surface of the lower surface portion 19 with an adhesive. I tried to wear it. Thereby, the back surface of the lower surface part 19 is aligned with the same level, and the heat insulating material 36 can be adhered to the back surface of the lower surface part 19 in a flat sheet shape. It is possible to maintain good adhesion. A locking claw for attaching the louver unit 16 to the cabinet 3 is formed on the back surface of the lower surface portion 19. Therefore, a cut and a through hole are formed in the heat insulating material 36 according to the location where the locking claw is formed.

  In the above configuration, a space is generated inside the rib, but is not sealed by the heat insulating material 36 with an adhesive. Further, the space surrounded by the ribs has an effect of improving the heat insulation of the lower surface portion 19 together with the heat insulating material 36. What is important here is that a non-breathable material is used as the heat insulating material 36. Specifically, any material that is substantially non-breathable under normal pressure may be used, and examples of such a material include foamed materials (foamed plastic, foamed elastomer, foamed rubber, etc.) mainly composed of closed cells. it can.

  The shape of the rib is not limited to the lattice shape, and any rib can be used as long as it can form a large number of independent sealed chambers by covering the heat insulating material 36. Specifically, the rib shape may be a polygonal shape such as a honeycomb shape in plan view, or a combination of different shapes.

  The louver unit 16 is also equipped with a wind guide panel 8. The louver unit 16 to which the wind direction changing device 17 is attached is inserted into the cabinet 3 through an opening formed in the lower portion of the front panel 11 and fixed.

  As shown in FIGS. 8 and 9, the wind direction changing device 17 includes the wind direction plate 9, the substrate 18, and the interlocking rod 21 (first embodiment). The substrate 18 is formed in an elongated plate shape, and five wind direction plates 9 arranged upright and spaced apart in the left-right direction are erected on the surface. In the present embodiment, the longitudinal direction of the substrate 18 is the left-right direction X of the wind direction changing device, the short direction of the substrate 18 is the front-rear direction Y of the wind direction changing device, and the standing direction of the wind direction plate 9 is the up and down direction of the wind direction changing device. Direction Z. The wind direction plates 9 are swung in the left-right direction in conjunction with the interlocking rod 21.

  As shown in FIGS. 8 and 9, the wind direction plate 9 is formed in a plate shape and is erected on the substrate 18 along the front-rear direction Y. A support portion 22 is formed at the rear end portion (windward end portion) of the wind direction plate 9, a low rigidity portion 23 is formed at the intermediate portion, and a high rigidity portion 24 is formed at the front end portion (leeward side end portion). The The wind direction plate 9 is fixed to the substrate 18 at the support portion 22. A blade portion of the wind direction plate 9 is formed by the low rigidity portion 23 and the high rigidity portion 24.

  The low-rigidity portion 23 is formed to be thinner than the high-rigidity portion 24 and the support portion 22 and has flexibility. When a force is applied to the high-rigidity portion 24 in the left-right direction X, the low-rigidity portion 23 is elastic. The wind direction can be changed by deforming and curving. The support portion 22 and the high-rigidity portion 24 have the same thickness and are thicker than the low-rigidity portion 23, have higher rigidity than the low-rigidity portion 23, and do not bend like the low-rigidity portion 23.

  The wind direction plate 9 and the substrate 18 are integrally formed of the same synthetic resin. In this embodiment, polypropylene having a small dimensional change is used as the raw synthetic resin, but the present invention is not limited to this.

  In order to facilitate molding, the wind direction plate 9 is formed such that one of the left and right surfaces is a smooth surface, and the thickness is increased by the support portion 22, the low-rigidity portion 23, and the high-rigidity portion 24 on the other surface. It is formed as an uneven surface by changing. In the present embodiment, among the five wind direction plates 9 erected on the substrate 18, the left three are warped by making the right surface a smooth surface, and the right two are warped by making the left surface a smooth surface. To offset the effects of.

  As shown in FIGS. 8 and 9, the shaft portion 25 extends along the vertical direction Z at the lower end portion of the high rigidity portion 24 at the downstream end portion when the support portion 22 is the upstream end portion as the blade portion. It is suspended. As shown in FIG. 9, a locking piece 26 is provided at the front end of the shaft portion 25 in the front-rear direction so as to follow the high-rigidity portion 24. On the other hand, the interlocking rod 21 is formed in an elongated flat bar shape as a separate body from the wind direction plate 9 and the substrate 18. The interlocking rod 21 is formed with five through holes 27 as bearing portions of the shaft portion 25. A groove portion 28 through which the locking piece 26 can pass is formed in the hole wall of the through hole 27. The width in the short direction of the groove portion 28 is set to be smaller than the diameter of the shaft portion 25.

  The groove portion 28 is formed so as to be inclined with respect to the width direction of the interlocking rod 21 (corresponding to the front-rear direction Y) with the through hole 27 as the center. That is, the wind direction plate 9 is based on a direction parallel to the front-rear direction Y around the through hole 27 together with the locking piece 26 as the interlocking rod 21 moves in the left-right direction when the wind direction is changed by the wind direction changing device. Rotate left and right within a predetermined angle range. The groove portion 28 is formed so as to be inclined at a position that exceeds the movable range when the wind direction of the wind direction plate 9 is changed.

  Accordingly, it is possible to reliably prevent the shaft portion 25 from falling out of the through hole 27 when the wind direction changing device 17 is used. On the other hand, in order to connect the interlocking rod 21 to the shaft portion 25, the wind direction plate 9 is bent by hand so that the locking piece 26 passes through the groove portion 28, and the shaft portion 25 is inserted into the through hole 27 in that posture, Then, it can be done easily by releasing the hand. That is, even if the interlocking rod 21 is not integrally formed with the wind direction plate 9, the assembly work of the wind direction changing device 17 is easy, and good productivity can be maintained.

  The board 18 is provided with an engagement piece 29 protruding forward along the front-rear direction Y. A convex portion 30 is formed upward at the tip of the engagement piece 29. On the other hand, a flat cylindrical portion 31 is formed on the interlocking rod 21. In other words, the cylindrical portion 31 is formed so that the axial direction C of the cylindrical portion 31 is parallel to the front-rear direction Y so as to go rearward from the end portion on the upstream side in the width direction of the interlocking rod 21. Further, the cylindrical portion 31 is provided so that the longitudinal direction orthogonal to the axial direction C is parallel to the left-right direction X of the wind direction changing device 17.

  As shown in FIGS. 10 and 11, in the cylindrical portion 31, a holding portion 32 that engages and holds the engagement piece 29 so as to be movable in the left-right direction is formed on the upper surface portion of the plane portions facing in the up-down direction. In addition, a retaining portion 33 for preventing the engagement piece 29 from coming out of the holding portion 32 is formed on the lower surface portion. The holding | maintenance part 32 may be directly connected to the connecting rod 21, and may be connected to the connecting rod 21 through another member. In the present embodiment, the holding part 32 is connected to the connecting rod 21 via the retaining part 33. In other words, the retaining portion 33 is formed integrally with both the holding portion 32 and the connecting rod 21.

  In the holding portion 32, stepped or recessed receiving portions 34a, 34b and 34c are formed at intervals in the left-right direction X. The receiving portions 34a, 34b, and 34c will be described in detail. A concave receiving portion 34a is formed at the central portion in the left-right direction X of the holding portion, and the receiving portions 34b that are concave on both outer sides in the left-right direction X around the receiving portion 34a. , 34b are formed, and both end portions of the holding portion 32 formed in a step shape that exists outside the receiving portions 34b, 34b in the left-right direction X are the receiving portions 34c, 34c.

  As shown in FIG. 11, the stepped portion 34a is formed to have a depth D, and the other receiving portions 34b and 34c have the same depth. When the thickness of the connecting rod 21 is T and the height of the convex portion 30 is H, the gap G between the holding portion 32 and the retaining portion 33 is set to satisfy T <G <(T + H). The In addition, the depth D of the receiving portions 34a, 34b, and 34c is set to a depth that can accommodate the convex portion 30.

  In a state where the connecting rod 21 is connected to the wind direction plate 9, the engaging piece 29 is inserted into the holding portion 32 at the tip portion, and the convex portion 30 is engaged with one of the receiving portions 34a, 34b, and 34c. Held in a state. Next, the case where the wind direction is changed in the wind direction changing device 17 will be described. In a posture (neutral posture) in which the blade portion of the wind direction plate 9 is parallel to the front-rear direction Y, the convex portion 30 engages with the receiving portion 34a.

  The interlocking rod 21 is formed with a knob 35. If the interlocking rod 21 is moved in the left-right direction X by picking it, the thickness (T + H) of the interlocking rod 21 including the convex portion 30 is larger than the gap G. Since the cylindrical portion 31 is elastically deformed and the gap G between the holding portion 32 and the retaining portion 33 is widened, the interlocking rod 21 is in contact with the retaining portion 32 and the retaining portion 33 while the tubular portion 31 is in contact with the retaining portion 32 and the retaining portion 33. It moves relatively in the X direction within 31.

  Accordingly, the convex portion 30 engages with the receiving portion 34b or 34c and takes a posture (tilted posture) in which the blade portion of the wind direction plate is inclined with respect to the front-rear direction Y. When the convex portion 30 is engaged with the receiving portion 34a, 34b, or 34c, the gap between the holding portion 32 and the retaining portion 33 returns to the original gap G. Therefore, when the knob portion 35 of the interlocking rod 21 is not operated, the retaining portion 33 prevents the convex portion 30 from coming out of the receiving portion 34a, 34b or 34c.

  In the above configuration, since the holding portion 32 is formed integrally with the retaining portion 33 and is fixed to the interlocking rod 21, even when the interlocking rod 21 is twisted or warped, the holding portion 32 and the retaining portion 33 The influence on the relative positional relationship is small, and the gap G is unlikely to fluctuate. Accordingly, the engagement piece 29 can be effectively prevented from coming off from the holding portion 32.

  Further, the wind direction plate 9 taking the inclined posture is subjected to a force for the elastically deformed low-rigidity portion 23 to return to the neutral posture. In addition, in the cylindrical portion 31 formed in a flat shape, the central portion is more easily elastically deformed than the both ends in the left-right direction X. Then, if the thickness of the holding portion 32 is constant in the left-right direction X, the engagement piece can be easily pulled out of the holding portion at the center portion than at both ends in the left-right direction X.

  Therefore, in the present invention, as shown in FIG. 12, the holding portion 32 is thicker at the center portion than at both ends in the left-right direction X. Alternatively, the gap G can be narrowed so that the center portion protrudes toward the retaining portion 33 side. In addition, the thickness of the holding | maintenance part 32 means the thickness of the other part except the receiving parts 34a, 34b, and 34c here. As a result, it is possible to more reliably suppress the engagement piece 29 (convex portion 30) from coming out of the holding portion 32 at the center portion in the left-right direction X.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. For example, in the present embodiment, the wind direction plate 9 and the substrate 18 are integrally formed of the same synthetic resin. However, the present invention is not limited to this, and the wind direction plate 9 and the substrate 18 are molded separately to form the wind direction plate 9. You may make it fix to the board | substrate 18. FIG.

  In this embodiment, the holding portion 32 is provided on the connecting rod 21 and the engaging piece 29 is provided on the substrate 18. However, the holding portion 32 may be provided on the substrate 18 and the engaging piece 29 may be provided on the connecting rod 21. Is possible. Moreover, in this embodiment, as shown in FIG.10 and FIG.11, although the holding | maintenance part 32 was formed in the upper surface side of the cylindrical part 31, and the retaining part 33 was formed in the lower surface side, it limited to this. Alternatively, the retaining portion 33 may be formed on the upper surface side of the cylindrical portion 31 and the holding portion 32 may be formed on the lower surface side.

  Furthermore, in this embodiment, the convex part 30 is formed in the engagement piece 29, and the concave or stepped receiving parts 34a, 34b, and 34c are formed in the holding part. For example, a recess may be formed in the engagement piece 29 and a receiving portion may be formed in a convex shape. The wind direction changing device having the above-described configuration may automatically change the wind direction by a known method using a motor.

  In the present embodiment, the holding portion 32 and the retaining portion 33 are integrally formed in a flat cylindrical shape. However, the present invention is not limited thereto, and the retaining portion 32 and the retaining portion 33 are respectively connected to the connecting rod 21. You may make it connect directly.

  Specifically, FIG. 13 is a schematic view showing a connecting rod of the second embodiment. As illustrated, the holding portion 32 and the retaining portion 33 may be branched from one end in the width direction of the connecting rod 21. Even with such a configuration, it is possible to suppress the influence on the relative positional relationship between the holding portion 32 and the retaining portion 33. In any part of the holding portion 32 in the left-right direction X, when the connecting rod 21 is slid in the left-right direction X, the resistance force applied to the connecting rod 21 can be set to the same level.

  As is clear from the above description of the embodiment, the wind direction changing device 17 of the present invention interlocks the wind direction plates 9 with a plurality of wind direction plates 9 that are erected on the substrate 18 at intervals in the left-right direction X. The interlocking rod 21, the engagement piece 29 provided on any one of the substrate 18 and the interlocking rod 21, and the other member are engaged and held so that the engagement piece 29 is movable in the left-right direction X. A holding portion 32 and a retaining portion 33 that prevents the engagement piece 29 from coming out of the retaining portion 32, and the retaining portion 33 is formed integrally with the retaining portion 32 or the other member. Features.

  According to the above configuration, since the retaining portion 33 is integrally formed with respect to the holding portion 32 or the member provided with the retaining portion 32, relative displacement between the retaining portion 33 and the retaining portion 32 is prevented, The engagement piece 29 can be prevented from coming off from the holding portion 32.

  Specifically, the holding portion 32 and the retaining portion 33 are integrally formed as a flat cylindrical portion 31. In the cylindrical portion 31, the holding portion 32 is formed on one of opposing flat portions, and the other is formed on the other. The retaining portion 33 may be formed, and the engagement piece 29 may be movable between the holding portion 32 and the retaining portion 33.

  The thickness of the holding portion 32 may be configured such that the central portion is thicker than both end portions in the longitudinal direction X perpendicular to the axial direction C of the cylindrical portion 31. Thereby, it becomes possible to more reliably suppress the engagement piece 29 from coming out of the holding portion 32 in the central portion in the left-right direction X.

  Since the wind direction changing device according to the present invention can be formed of a relatively hard synthetic resin, it is possible to suppress dimensional changes. That is, in the air conditioner on which the wind direction changing device 17 is mounted, the installation work of the wind direction changing device 17 can be easily performed. Examples of the air conditioner include an air conditioner, an air purifier, a dehumidifier, a humidifier, an electric heater, an oil stove, a gas heater, and a refrigerator.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Such embodiments are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Fan 3 Cabinet 4 Suction port 5 Air outlet 6 Air passage 7 Filter 8 Wind guide panel 9 Wind direction plate 10 Back plate 11 Front panel 12 Opening 13 Front cover 14 Drain pan 15 Rear guider 16 Louver unit 17 Wind direction change device 18 Substrate 19 louver unit lower surface portion 19a substrate housing portion 20 rib 21 interlocking rod 22 support portion 23 low rigidity portion 24 high rigidity portion 25 shaft portion 26 locking piece 27 through hole 28 groove portion 29 engagement piece 31 cylindrical portion 32 holding portion 33 retaining Part 34a receiving part 34b receiving part 34c receiving part 35 knob part 36 heat insulating material

Claims (4)

A plurality of wind direction plates standing up and down in the left-right direction on the substrate, an interlocking rod for interlocking the wind direction plates, and an engagement piece provided on one of the substrate and the interlocking rod And a holding part provided on the other member for engaging and holding the engaging piece so as to be movable in the left-right direction, and a retaining part for preventing the engaging piece from coming out of the holding part. The wind direction change is characterized in that the portion is formed integrally with at least one of the holding portion and the other member, and is disposed so as to face the holding portion with the engagement piece interposed therebetween. apparatus. A plurality of wind direction plates standing up and down in the left-right direction on the substrate, an interlocking rod for interlocking the wind direction plates, and an engagement piece provided on one of the substrate and the interlocking rod And a holding part provided on the other member for engaging and holding the engagement piece so as to be movable in the left-right direction, and a retaining part for preventing the engagement piece from coming out of the holding part. And the retaining portion are integrally formed as a flat cylindrical portion, and in the tubular portion, the holding portion is formed in one of the opposing flat portions, and the retaining portion is formed in the other, The wind direction changing device characterized in that the engagement piece is movable between the holding portion and the retaining portion. The wind direction changing device according to claim 2, wherein the thickness of the holding portion is formed so that a central portion is thicker than both longitudinal end portions orthogonal to the axial direction of the cylindrical portion. . An air conditioner on which the wind direction changing device according to any one of claims 1 to 3 is mounted.

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