Blower

Abstract

To provide a blower that has good workability for maintenance.SOLUTION: A blower module 100 includes an axial flow fan 101 and a fan case 102. The fan case accommodates the axial flow fan. The fan case has a box body 1 and a lid part 2. The box body has a bottomed cylindrical shape having one side end part in a first direction being open. The lid part covers an opening 10 of the one side end part in the first direction of the box body. The box body has a bottom 11 to which the axial flow fan is fastened. The one side end part in the first direction of the axial flow fan faces the first direction at an interval from the lid part. In the first direction, the axial flow fan faces at least one of the lid part and the bottom at an interval.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a blower device. [Background technology]

[0002] Conventionally, there have been known blower devices in which fans are housed in a case. For example, several fans and a control circuit are housed in a fan tray frame. The fans are connected to the bottom plate of the frame with screws (for example, Utility Model Registration No. 3085556).

[0003] In addition, since the blower is sometimes installed outdoors, the board is often sealed with a resin material or the like within a case to prevent dust, water, etc. from adhering to the board. External wiring electrically connected to the board is drawn out from the resin sealing portion and the case to the outside and connected to external equipment, an external power source, etc. of the blower. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3085456 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when the fan is directly connected to the bottom plate, as in Utility Model Registration No. 3085556, external forces and shocks acting on the case (particularly the bottom plate) are easily transmitted to the fan. For example, during maintenance, there is a risk that the worker or a tool may hit the case of the blower. Also, when the blower needs to be moved, there is a risk that the blower may hit a wall or the ground. In these cases, if the external forces and shocks received by the blower are transmitted to the fan, there is a risk that the fan may be damaged.

[0006] Furthermore, when the substrate is sealed, workers must check for cracks and defects in the sealing portion as well as peeling from the case during maintenance. Checking the sealing portion is usually done visually, but checking for peeling from the case can take a long time.

[0007] Furthermore, when performing maintenance on the blower, the external wiring can easily get in the way and be moved, and the portion of the external wiring facing the board is easily subjected to bending, twisting, pulling, and other forces.

[0008] For the reasons mentioned above, workers must perform maintenance carefully, but this makes it difficult to improve the efficiency of maintenance work.

[0009] An object of the present invention is to improve the workability of maintenance of a blower device. [Means for solving the problem]

[0010] An exemplary blower device of the present invention includes an axial fan and a fan case. The fan case houses the axial fan. The fan case has a box body and a lid. The box body is cylindrical and has a bottom that is open at one end in a predetermined first direction. The lid covers the opening at the one end in the first direction of the box body. The box body has a bottom to which the axial fan is fixed. In the first direction, the axial fan faces at least one of the lid body and the bottom body with a gap therebetween.

[0011] Also, an exemplary blower device of the present invention includes an axial fan, a fan case, and a filler. The fan case has a substrate accommodating section that accommodates a substrate. The substrate is electrically connected to the axial fan. The filler is filled into the substrate accommodating section to cover the substrate. An inner surface of the substrate accommodating section that surrounds the substrate and extends in at least a predetermined first direction has a marker portion disposed at the same position in the first direction as one end face of the filler in the first direction.

[0012] Also, an exemplary blower device of the present invention includes a fan case, a connector, a wiring section, and an attachment member. The fan case houses a fan and a circuit board. The connector is disposed outside the fan case. The wiring section is drawn out to the outside of the fan case and electrically connects at least one of the fan and the circuit board to the connector. The attachment member surrounds the wiring section, is disposed on the outer circumferential surface of the wiring section, and is rotatable together with and around the wiring section. The fan case further includes a support portion. The support portion supports the attachment member rotatably around a central axis extending along the wiring section in the extension direction of the wiring section within the fan case. The extension direction is the direction in which the wiring section extends. The attachment member has a first engagement portion, and the support portion has a second engagement portion engageable with the first engagement portion that moves circumferentially. When the mounting member rotates relative to the support portion, the first engaging portion engages with the second engaging portion to limit the range of rotation of the mounting member in the circumferential direction around the central axis.

[0013] Further features and advantages of the present invention will become more apparent from the following embodiments. [Effects of the Invention]

[0014] According to the exemplary blower device of the present invention, the workability of maintenance can be improved. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a cross-sectional view showing an example of the configuration of the blower device as viewed from a third direction. [Figure 2] FIG. 2 is a cross-sectional view of the blower seen from a second direction. [Figure 3] FIG. 3 is an external view of the blower. [Figure 4] FIG. 4 is a perspective view showing an example of the internal structure of the blower. [Figure 5] FIG. 5 is an exploded perspective view of the blower. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0017] In this specification, the direction from one of the bottom 11 and lid 2 of the fan case 102 (described later) of the blower device 100 to the other is referred to as the "first direction Z." Within the first direction Z, the direction from the bottom 11 to the lid 2 is referred to as the "first direction Z1," and the direction from the lid 2 to the bottom 11 is referred to as the "first direction Z2." Furthermore, the direction perpendicular to the first direction Z is referred to as the "second direction X," and the direction perpendicular to the first direction Z and the second direction X is referred to as the "third direction Y."

[0018] The direction of rotation centered on a predetermined axis including the rotation axis J1 and the central axis J2 (described later) is referred to as the "circumferential direction." Furthermore, the direction perpendicular to the predetermined axis including the rotation axis J1 and the central axis J2 and moving toward or away from the axis is referred to as the "radial direction." Within the radial direction, the direction moving toward the predetermined axis is referred to as the "radially inward direction," and the direction moving away from the predetermined axis is referred to as the "radially outward direction."

[0019] In this specification, the term "annular" refers not only to a shape that is continuous and uninterrupted throughout the entire circumferential direction based on a predetermined axis including the rotation axis J1 and the central axis J2, but also to a shape that has one or more interruptions along a portion of the circumferential direction based on the predetermined axis including the rotation axis J1 and the central axis J2. It also refers to a shape that describes a closed curve on a curved surface that intersects with the predetermined axis including the rotation axis J1 and the central axis J2.

[0020] Furthermore, in the positional relationship between one of a direction, a line, and a plane and another, "parallel" includes not only a state in which they do not intersect at all no matter how far they are extended, but also a state in which they are substantially parallel. Furthermore, "perpendicular" and "orthogonal" each include not only a state in which they intersect at 90 degrees, but also a state in which they are substantially perpendicular and a state in which they are substantially orthogonal. In other words, "parallel," "perpendicular," and "orthogonal" each include a state in which there is an angular deviation in the positional relationship between the two to an extent that does not deviate from the spirit of the present invention.

[0021] It should be noted that these are used merely for the purpose of explanation and are not intended to limit the actual positional relationship, direction, names, etc.

[0022] <1. Embodiment> An example of the configuration of the blower device 100 of this embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a cross-sectional view showing an example of the configuration of the blower device 100 as viewed from the third direction Y. FIG. 2 is a cross-sectional view of the blower device 100 as viewed from the second direction X. FIG. 3 is an external view of the blower device 100. FIG. 4 is a perspective view showing an example of the internal structure of the blower device 100. FIG. 5 is an exploded perspective view of the blower device 100. Note that FIG. 1 shows a cross-sectional structure of the blower device 100 when it is virtually cut along the two-dot chain line II in FIG. 3 and a plane parallel to the first direction Z. FIG. 2 shows a cross-sectional structure of the blower device 100 when it is virtually cut along the two-dot chain line II-II in FIG. 3 and a plane parallel to the first direction Z. The cover portion 2 is not shown in FIG. 4.

[0023] The blower device 100 includes multiple axial fans 101, a fan case 102, a male screw 103, and a substrate 104. The axial fan 101, for example, draws air in one first direction Z1 and sends it out in the other first direction Z2. The fan case 102 houses the axial fan 101, the substrate 104, and the like. In this embodiment, the fan case 102 has a rectangular parallelepiped shape extending in the first direction Z, with the second direction X as its longitudinal direction, for example. However, without being limited to the example of this embodiment, the fan case 102 may be a rectangular parallelepiped with at least one of the first direction Z and the third direction Y as its longitudinal direction. Alternatively, the fan case 102 may be a cube or a shape other than a rectangular parallelepiped. The male screw 103 secures the axial fan 101 inside the fan case 102. The substrate 104 is electrically connected to the axial fan 101. The substrate 104 also has a drive circuit for the axial flow fan 101 mounted thereon, and is electrically connected to an external device of the blower device 100 via external wiring (not shown).

[0024] <1-1. Axial Fan 101> As shown in FIG. 1 , the axial fan 101 includes an impeller 1011, a motor unit 1012, and a housing 1013. The impeller 1011 is rotatable around a rotation axis J1 parallel to the first direction Z. The motor unit 1012 drives the impeller 1011 to rotate. The housing 1013 houses the impeller 1011 and the motor unit 1012. An intake port (reference numeral omitted) for drawing in airflow is disposed at an end of the housing 1013 on one side of the first direction Z1. An outlet port (reference numeral omitted) for discharging airflow is disposed at an end of the housing 1013 on the other side of the first direction Z2. The axial fan 101 is disposed inside the fan case 102. In this embodiment, there are multiple axial fans 101, and they are lined up in the second direction X. However, the present invention is not limited to this example, and the axial fans 101 may be arranged two-dimensionally within the fan case 102, and for example, a row of axial fans 101 aligned in the second direction X may be arranged in multiple rows in the third direction Y. Alternatively, a plurality of axial fans 101 may be aligned in the third direction Y, or there may be only one axial fan 101.

[0025] <1-2. Fan Case 102> Fan case 102 has a box body 1 and a lid portion 2. Box body 1 is a cylindrical body with a bottom that is open at one end in one side in the first direction Z1. Lid portion 2 covers the opening at the end of box body 1 on one side in the first direction Z1.

[0026] The lid 2 has a top panel 21 and an opening 22. The top panel 21 is plate-shaped and extends in the second direction X and the third direction Y, and is disposed on the first direction Z1 side of the box 1. The opening 22 is disposed on the top panel 21 and penetrates the top panel 21 in a thickness direction (for example, the first direction Z). The opening 22 faces an end (airflow suction port) of the axial fan 101 on the first direction Z1 side in the first direction Z. In this embodiment, the planar shape of the opening 22 as viewed from the first direction Z is circular, as shown in FIGS. 3 and 5 . However, the planar shape is not limited to the example shown in this embodiment, and may be a shape other than a circle, such as a polygon (m-sided shape; m is a positive integer greater than or equal to 3).

[0027] Next, the box body 1 has an opening 10 (see FIG. 5, etc.). The opening 10 is located at the end of the box body 1 on one side in the first direction Z1, and opens toward one side in the first direction Z1. The opening 10 is covered by the lid part 2 (top panel part 21 thereof).

[0028] The box 1 also has a bottom 11. The bottom 11 is plate-shaped and extends in the second direction X and the third direction Y. In this embodiment, the bottom 11 is rectangular when viewed from the first direction Z, with the second direction X as its longitudinal direction and the third direction Y as its lateral direction. An axial fan 101 is fixed to (the end face of) the bottom 11 on the one side of the first direction Z1. In other words, the fan case 102 has the bottom 11 to which the axial fan 101 is fixed. In the first direction Z, the axial fan 101 faces at least one of the lid 2 (top panel portion 21) and the bottom 11 with a gap therebetween. For example, in this embodiment, the end of the axial fan 101 on the other side of the first direction Z2 faces the bottom 11 with a gap therebetween in the first direction Z. In addition, the end of the axial fan 101 on the one side of the first direction Z1 faces the lid 2 with a gap therebetween in the first direction Z. However, the example of this embodiment does not exclude a configuration in which there is no gap between the axial fan 101 and either the top plate portion 21 of the lid portion 2 or the bottom portion 11 in the first direction Z.

[0029] According to the blower device 100 of this embodiment, by providing a gap between the axial fan 101 and the fan case 102 (at least one of the bottom 11 and the lid 2) in the first direction Z, the axial fan 101 inside can be protected from external forces acting on the fan case 102 (particularly the bottom 11 and the lid 2) during maintenance work, for example. This improves the workability of maintenance of the blower device 100.

[0030] The bottom portion 11 has a hole portion 111 , a boss 112 , and a female thread portion 113 .

[0031] The hole portion 111 is composed of a plurality of holes 1111 arranged two-dimensionally and faces the end portion (i.e., the exhaust port) of the axial fan 101 in the first direction Z2. In this embodiment, the holes 1111 are through-holes having a rectangular planar shape when viewed from the first direction Z and extend in the first direction Z. The hole portion 111 is composed of these holes 1111. Note that, without being limited to the example of this embodiment, the planar shape of the holes 1111 may be hexagonal. In this way, the hole portion 111 can have a honeycomb structure, so even if a plurality of through-holes are arranged in the bottom portion 11, a decrease in the strength of the bottom portion 11 can be suppressed. However, this example does not exclude a configuration in which the planar shape of the holes 1111 is other than rectangular or hexagonal. For example, the planar shape may be circular.

[0032] The boss 112 is a base for mounting the axial fan 101. The bosses 112 protrude in one side of the first direction Z1 from the end face of the bottom 11 on the one side of the first direction Z1, and multiple bosses 112 are arranged around the hole 111. The boss 112 has a female thread portion 113. The female thread portion 113 extends from the end of the boss 112 on the one side of the first direction Z1 toward the other side of the first direction Z2, and is capable of threadably engaging with the male screw 103. By threading the male screw 103 into the female thread portion 113, the axial fan 101 is fixed to the bottom 11 of the box 1 with the boss 112 sandwiched between them.

[0033] The end face of the axial fan 101 fixed to the bottom 11 on the other side in the first direction Z2 abuts the end face of the boss 112 on the one side in the first direction Z1. Therefore, the distance between the axial fan 101 and the bottom 11 in the first direction Z is the same as the protruding height of the boss 112, in other words, the distance is the same as the distance between the end face of the boss 112 on the one side in the first direction Z1 and the end face of the bottom 11 on the one side in the first direction Z1. However, this example does not exclude a configuration in which the distance between the axial fan 101 and the bottom 11 in the first direction Z differs from the protruding height of the boss 112.

[0034] For example, the axial fan 101 has a plurality of through holes 1014 extending in the first direction Z. The through holes 1014 are arranged on the outer edge of (the housing 1013 of) the axial fan 101 when viewed from the first direction Z. A headed rod-shaped male screw 103 that screws into the female screw portion 113 is inserted into the through hole 1014 from the side in one direction, Z1, in the first direction. In other words, the male screw 103 is inserted into the through hole 1014 of the axial fan 101 housed in the fan case 102 from the opening 10 side of the box 1 (the side in one direction, Z1), and is screwed into the female screw portion 113 that is arranged in the boss 112 of the bottom 11.

[0035] This makes it easier to arrange (i.e., attach) the axial fan 101 to the bottom 11 than when the headed rod-shaped male screw 103 is inserted into the through-hole 1014 from the other side in the first direction Z2 (i.e., the bottom 11 side). Furthermore, because the axial fan 101 removed from the bottom 11 remains inside the box 1, concerns about the axial fan 101 falling off or the like are reduced. This makes it easier to remove the axial fan 101 from the bottom 11. This improves the workability of maintenance of the blower device 100.

[0036] Preferably, as in this embodiment, the bottom 11 further includes a protrusion 114. The protrusion 114 protrudes in the first direction Z1 from the end face of at least one of the bosses 112 on the first direction Z1 side. In this case, a female thread 113 is disposed at the end of the protrusion 114 on the first direction Z1 side. The protrusion 114 is fitted to the through-hole 1014 of the axial fan 101 on the second first direction Z2 side, i.e., is disposed within the through-hole 1014 of the axial fan 101. This fitting structure protects the axial fan 101 inside from external forces acting on the cover 2 and prevents the attachment position of the axial fan 101 from shifting relative to the bottom 11 (particularly the hole 111). However, this example does not exclude a configuration in which the bottom 11 does not include the protrusion 114. For example, the protrusion 114 may be omitted.

[0037] It should be noted that the present invention is not limited to the example of this embodiment, and the axial fan 101 may be fixed to the lid 2 (on the other side of the first direction Z2). For example, the female thread portion 113 that can be threadedly engaged with the male screw 103 may be disposed on the end face of the top plate 21 on the other side of the first direction Z2 and extend in the one side of the first direction Z1. By threading the two together, the axial fan 101 is fixed to the top plate 21 of the lid 2. For example, a headed rod-shaped male screw 103 that threads into the female thread portion 113 of the top plate 21 is inserted into the through-hole 1014 of the axial fan 101 from the other side of the first direction Z2.

[0038] Next, the box 1 further has a side wall portion 12 and inner walls 13 and 14.

[0039] The side wall 12 is an outer wall of the box 1, and protrudes from the outer edge of the bottom 11 as viewed from the first direction Z at least in the first direction Z1, surrounding the outer edge. In this embodiment, the side wall 12 is composed of four side walls 121, 122, 123, and 124. The side wall 121 on the second direction X1 side protrudes from its end on the second direction X1 side at least in the first direction Z1 and extends in the third direction Y. The side wall 122 on the second direction X2 side protrudes from its end on the second direction X2 side at least in the first direction Z1 and extends in the third direction Y. The side wall 123 on the third direction Y1 side protrudes from its end on the third direction Y1 side at least in the first direction Z1 and extends in the second direction X. The side wall 124 on the other side in the third direction Y2 protrudes from its end on the other side in the third direction Y2 at least in one side in the first direction Z1 and extends in the second direction X. The end on the one side in the first direction Z1 of the side wall portion 12 (i.e., the four side walls 121, 122, 123, 124) forms (the outer edge of) the opening 10 of the box body 1. The opening 10 is covered by the top plate portion 21 of the lid portion 2.

[0040] The inner walls 13, 14 are plates that divide the interior of the box 1, and protrude from the bottom 11 in at least one first direction Z1. In this embodiment, the ends of the inner walls 13, 14 on the one first direction Z1 side are arranged at the same position in the first direction Z as the ends of the side wall 12 on the one first direction Z1 side. However, this is not limiting, and the end of at least either of the inner walls 13, 14 on the one first direction Z1 side may be arranged further in the other first direction Z2 than the end of the side wall 12 on the one first direction Z1 side.

[0041] The inner wall 13 is disposed between the pair of side walls 121, 122 in the second direction X and extends in the second direction X. An end of the inner wall 13 on the one side of the second direction X1 is connected to the inner surface of the side wall 121 on the one side of the second direction X1. An end of the inner wall 13 on the other side of the second direction X2 is connected to the inner surface of the side wall 122 on the other side of the second direction X2.

[0042] The inner wall 14 is disposed between the side wall 123 on one side in the third direction Y1 and the inner wall 13, and extends in the third direction Y. An end of the inner wall 14 on one side in the third direction Y1 is connected to the inner surface of the side wall 123 on one side in the third direction Y1. An end of the inner wall 14 on the other side in the third direction Y2 is connected to the inner wall 13.

[0043] The interior of the box 1 is divided into a plurality of spaces by the inner walls 13 and 14. The interior space of the box 1 includes a fan housing section 3, a board housing section 5, and a lead wire housing section 6.

[0044] <1-2-1. Fan housing section 3> The fan housing 3 houses the axial fan 101. The fan housing 3 is composed of a bottom 11, a sidewall 121 on the side in the second direction X1, a sidewall 123 on the side in the third direction Y1, and inner walls 13 and 14 (see FIGS. 4 and 5, etc.). In other words, the fan housing 3 is a space surrounded by these components and opens toward the side in the first direction Z1. In other words, the end of the fan housing 3 on the side in the first direction Z1 is part of the opening 10 and is covered by the lid 2 (top panel 21). In this embodiment, there is one fan housing 3 arranged in the box 1, but this is not limited to this example and there may be multiple fan housings 3.

[0045] <1-2-2. Substrate accommodating section 5> The substrate accommodating section 5 is composed of a bottom 11, a side wall 121 on the one side in the second direction X1, a side wall 122 on the other side in the second direction X2, a side wall 124 on the other side in the third direction Y2, and an inner wall 13. In other words, the substrate accommodating section 5 is a space surrounded by these components and opens toward one side in the first direction Z1. In other words, the end of the substrate accommodating section 5 on the one side in the first direction Z1 is another part of the opening 10, and is covered by the lid 2 (top panel 21 thereof).

[0046] The substrate accommodating section 5 accommodates a substrate 104 electrically connected to the axial fan 101. That is, the blower device 100 includes a fan case 102 having the substrate accommodating section 5. A substrate holder (not shown) that supports the substrate 104 is disposed within the substrate accommodating section 5. For example, the substrate holder protrudes from the bottom 11 in one first direction Z1 and extends in the second direction X. A groove that holds the substrate 104 in the third direction Y is disposed at the end of the substrate holder on the one first direction Z1 side. The groove is recessed in the other first direction Z2 and extends in the second direction X. In this embodiment, the substrate 104 is plate-shaped and expands in the first direction Z and the second direction X when held by the substrate holder. However, the arrangement of the substrate 104 is not limited to this example. For example, the substrate 104 may be disposed so as to expand in the second direction X and the third direction Y.

[0047] The substrate accommodating portion 5 is filled with a filling member 51. That is, the blower device 100 further includes the filling member 51. The filling member 51 covers the substrate 104 (and its substrate holder) and adheres to the bottom 11, the side wall 121 on the one side in the second direction X1, the side wall 122 on the other side in the second direction X2, the side wall 124 on the other side in the third direction Y2, and the inner wall 13. The filling member 51 is made of, for example, a resin material, and prevents water, dust, and the like from adhering to the substrate 104.

[0048] A marker portion 52 is disposed on an inner surface of the substrate accommodating portion 5, which surrounds the substrate 104 and extends at least in the first direction Z, at the same position in the first direction Z as the end face of the filling member 51 on one side in the first direction Z1. The marker portion 52 is a component for checking whether or not the filling member 51 has peeled off from the inner surface of the substrate accommodating portion 5, and in this embodiment, is disposed on the inner surface of the side wall 124 on the other side in the third direction Y2. However, without being limited to this example, the marker portion 52 may be disposed on the inner surface (the surface on the filling member 51 side) of at least one of the other side walls 121, 122 and the inner wall 13. By disposing the marker portion 52 at the same position in the first direction Z as the end face of the filling member 51 on one side in the first direction Z1, it becomes easier to visually check whether or not the filling member 51 has peeled off from the inner surface of the substrate accommodating portion 5. This improves the ease of maintenance of the air blower device 100.

[0049] Preferably, the mark portion 52 includes at least a surface facing the first direction Z1. For example, a step portion 53 is arranged on the inner surface of the substrate accommodating portion 5 that surrounds the substrate 104. The fan case has the step portion 53. In this embodiment, the step portion 53 is arranged on the inner surface of the side wall 124 on the other third direction Y2 side. Specifically, the inner surface of the side wall 124 includes a first surface, a second surface, and a third surface. The first surface extends in the first direction Z and the second direction X. The second surface is arranged further in the first direction Z1 and the other third direction Y2 than the first surface, and extends in the first direction Z and the second direction X. The third surface connects an end of the first surface on the one first direction Z1 side and an end of the second surface on the other first direction Z2 side, and extends in a direction intersecting the first direction Z (for example, the second direction X and the third direction Y). The third surface is a surface whose normal direction faces at least one side of the first direction Z1, and serves as the mark portion 52 in this embodiment.

[0050] In other words, the marker portion 52 is a surface of the stepped portion 53 facing at least one side of the first direction Z1. In this way, when molding the fan case 102 having the stepped portion 53, the marker portion 52 can be easily arranged without having to form the marker portion 52 in a separate process. However, this example does not exclude a configuration in which the marker portion 52 is not a surface of the stepped portion 53 facing at least one side of the first direction Z1. For example, the marker portion 52 may be a recess, a groove, a protrusion, or the like.

[0051] Preferably, the mark portion 52 extends in the second direction X perpendicular to the first direction Z. For example, in this embodiment, the mark portion 52 (i.e., the above-mentioned third surface of the step portion 53) extends from the end of the board accommodating portion 5 on one side X1 of the second direction to the end on the other side X2 of the second direction. By extending the mark portion 52 in the second direction X (i.e., the longitudinal direction of the fan case 102), the length of the mark portion 52 can be increased. This makes it easier to visually check whether the filler member 51 has peeled off from the inner surface of the board accommodating portion 5. This improves the workability of maintenance of the blower device 100.

[0052] <1-2-3. Lead wire housing section 6> Next, a configuration example of the lead wire housing 6 will be described with reference to Figures 1 and 2 and Figures 4 and 5. The lead wire housing 6 houses a part of the lead wire portion 7.

[0053] The lead wire housing 6 is composed of a bottom 11, a side wall 122 on the other side in the second direction X2, a side wall 123 on the one side in the third direction Y1, and inner walls 13 and 14. In other words, the lead wire housing 6 is a space surrounded by these components and opens toward one side in the first direction Z1. In other words, the end of the lead wire housing 6 on the one side in the first direction Z1 is another part of the opening 10 and is covered by (the top panel 21 of) the lid 2.

[0054] An opening 60 is arranged in the side wall 123 that constitutes the lead wire housing 6. The opening 60 penetrates the side wall 123 in the third direction Y. In this embodiment, the opening 60 is a recess that is recessed from the end of the side wall 123 on one side in the first direction Z1 toward the other side in the first direction Z2. The lead wire portion 7 is drawn out to the outside of the fan case 102 through the opening 60. The lead wire portion 7 is slidable in and out of the lead wire housing 6 within a predetermined length range. In other words, the lead wire portion 7 can be drawn out of the lead wire housing 6 and can also be pushed into and housed in the lead wire housing 6.

[0055] In the following, the direction in which the lead-out portion 7 (the wiring portion 72 described later) extends is referred to as the extension direction De. The extension direction De intersects with the second direction X. In this embodiment, at least within the lead-out housing portion 6 of the fan case 102, the extension direction De is perpendicular to the second direction X and parallel to the third direction Y. Outside the lead-out housing portion 6 of the fan case 102, the extension direction De may be parallel to the third direction Y, or may be a direction different from the third direction Y and not parallel to the third direction Y.

[0056] In this embodiment, the lead wire housing 6 is arranged on the other side of the second direction X2 of the fan housing 3. However, this example does not exclude a configuration in which the lead wire housing 6 is arranged on the one side of the second direction X1 of the fan housing 3.

[0057] Alternatively, the lead wire housing 6 may be disposed between two housings 3 adjacent to each other in the second direction X. The routing of the lead wire portion 7 differs depending on the installation environment of the blower device 100. Therefore, by disposing the lead wire housing 6 between adjacent fan housings 3, the lead wire portion 7 can be easily routed.

[0058] The lead wire housing 6 has a support portion 61. The support portion 61 supports the lead wire portion 7 in the lead wire housing 6 so that the lead wire portion 7 can slide and rotate.

[0059] The support portion 61 has a wall portion 611. The wall portion 611 protrudes from the bottom portion 11 in at least one first direction Z1 and extends in a direction intersecting with the extension direction De of the lead-out portion 7. In this embodiment, the wall portion 611 protruding in one first direction Z1 extends in the second direction X.

[0060] A recess 612 is arranged at the end of the wall 611 on one side in the first direction Z1. The recess 612 is recessed in the other side in the first direction Z2 and penetrates the wall 611. In other words, the recess 612 extends in the extension direction De (the third direction Y in this embodiment) and is open at both ends in the extension direction De.

[0061] In this embodiment, due to the arrangement of the recess 612, a pair of protrusions 613 are arranged in the second direction X on both sides of the recess 612 in the second direction X at the end of the wall 611 on one side in the first direction Z1.

[0062] The protrusion 613 protrudes in the first direction Z1 from an end of the wall 611 on the first direction Z1 side. In the first direction Z, the position of the end of the protrusion 613 on the first direction Z1 side is the same as the end of the side wall 122 and the inner wall 14 on the first direction Z1 side. However, this is not limited to this example, and the end of at least one protrusion 613 on the first direction Z1 side may be located further in the first direction Z2 than the end of at least one of the side wall 122 and the inner wall 14 on the first direction Z1 side. In other words, the at least one protrusion 613 may be a step portion formed by a bottom surface of the recess 612 facing in the first direction Z1, an inner side surface of the recess 612 facing in the second direction X, and a surface extending outward from the end of the recess 612 on the first direction Z1 side.

[0063] Furthermore, the examples of this embodiment do not exclude a configuration in which the protrusions 613 are not a pair, and do not exclude a configuration in which the support portion 61 does not have a protrusion 613. For example, at least one of the pair of protrusions 613 in the second direction X may be omitted.

[0064] <1-2-4. Other storage areas> In addition, the box 1 may include spaces (other accommodation sections) other than the fan accommodation section 3, the board accommodation section 5, and the lead wire accommodation section 6, and may include, for example, a notification section accommodation section (not shown). The notification section accommodates a notification section (not shown) for providing notification to the outside of the blower device 100. For example, the notification section has a light-emitting section, a display, a speaker, and the like. The light-emitting section has a green LED for providing notification of normal operation and a red LED for providing notification of the occurrence of an abnormality, and the like. The display provides notification by displaying on the screen. The speaker provides notification by outputting audio.

[0065] <1-3. Lead wire section 7> 1 and 2 and 4 and 5, a configuration example of the lead-out section 7 will be described. The lead-out section 7 is a wiring member electrically connected to at least one of the axial flow fan 101 and the substrate 104.

[0066] The lead-out portion 7 includes a connector 71, a wiring portion 72, a flat plate portion 73, a sealing member 74, and an attachment member 75. The blower device 100 further includes the lead-out portion 7, that is, the connector 71, the wiring portion 72, the flat plate portion 73, the sealing member 74, and the attachment member 75.

[0067] <1-3-1. Connector 71> Connector 71 is a connection terminal disposed on the outside of fan case 102, and is capable of electrically connecting to an external device or its wiring terminal relative to fan case 102.

[0068] <1-3-2. Wiring section 72> The wiring section 72 is drawn out from the inside to the outside of the fan case 102 and electrically connects at least one of the axial fan 101 and the board 104 to the connector 71. For example, the wiring section 72 is composed of a single insulating-coated conductor wire or a cable formed by bundling multiple insulating-coated conductor wires together, and a tubular member that surrounds the cable and extends in the extension direction De (third direction Y). The cable electrically connects the axial fan 101 or the board 104 to the connector 71. In this embodiment, the tubular member is made of a metal such as stainless steel, but it may also be made of resin. The wiring section 72 (the tubular member described above) is supported by the seal member 74 so as to be slidable in the extension direction De (third direction Y).

[0069] Within the fan case 102, the wiring part 72 is arranged on the other side of the second direction X2 relative to the multiple axial fans 101 in this embodiment, but is not limited to this example and may also be arranged on the one side of the second direction X1 relative to the multiple axial fans 101.

[0070] Alternatively, the wiring portion 72 may be disposed between two adjacent axial fans 101 in the second direction X. Normally, the arrangement of the connector 71 and the wiring portion 72 differs depending on the installation environment of the blower device 100. Therefore, by disposing the wiring portion 72 between adjacent axial fans 101, the arrangement of the connector 71 and the wiring portion 72 becomes easier.

[0071] <1-3-3. Flat plate part 73> The flat plate portions 73 are arranged on the outer circumferential surface of the wiring portion 72 (the above-mentioned cylindrical member) and extend in the extension direction De. In this embodiment, the flat plate portions 73 are rectangular and arranged in multiple numbers in the circumferential direction. For example, in a cross-sectional view of the wiring portion 72 and the flat plate portions 73 seen from the extension direction De, the six flat plate portions 73 attached to the outer circumferential surface of the wiring portion 72 are arranged in a hexagonal shape (see FIG. 1). More specifically, each flat plate portion 73 is arranged on each side of a hexagon circumscribing the wiring portion 72. However, the number and arrangement of the flat plate portions 73 are not limited to the example of this embodiment. For example, the multiple flat plate portions 73 may be arranged on the outer circumferential surface of the wiring portion 72 (the above-mentioned cylindrical member) and arranged at equal or different intervals in the circumferential direction based on the central axis J2 described later. Furthermore, in the above-mentioned cross-sectional view, two flat plate portions 73 may be arranged opposite each other with the wiring portion 72 interposed therebetween. Alternatively, in the above-described cross-sectional view, n (n is a natural number equal to or greater than 3) flat plate portions 73 may be arranged on each side of an n-sided polygon. Furthermore, adjacent flat plate portions 73 in the circumferential direction based on the central axis J2 may be in contact with or connected to each other, or may be spaced apart.

[0072] <1-3-4. Sealing member 74> The sealing member 74 is disposed in the opening 60 of the lead wire accommodating portion 6 and seals the opening 60. The sealing member 74 is sandwiched between the edge of the side wall 123 that follows the outer edge of the opening 60 in the first direction Z and the top plate 21 of the lid 2. In this embodiment, the sealing member 74 is made of an elastic resin material such as natural rubber or silicone rubber.

[0073] The sealing member 74 has a through hole 741. The through hole 741 is arranged on the end surface on the third direction Y side and extends in the third direction Y. The wiring portion 72 is inserted through the through hole 741.

[0074] Preferably, the wiring portion 72 is inserted through the through-hole 741 so as to be slidable in the third direction Y. In other words, the wiring portion 72 is preferably movable in the extension direction De (third direction Y) relative to the fan case 102. This makes it easier to handle the lead-out wire portion 7 (particularly the connector 71 and the wiring portion 72). This further improves the ease of maintenance and other work on the blower device 100. However, this example does not exclude a configuration in which the wiring portion 72 is immovable in the extension direction De (third direction Y) relative to the fan case 102.

[0075] Furthermore, the outer edge of the sealing member 74 disposed at the opening 60, as viewed from the third direction Y, is in close contact with the edge of the sidewall 123 that runs along the outer edge of the opening 60 and the end face of the top plate 21 of the lid 2 on the other side of the first direction Z2. Furthermore, the inner edge of the sealing member 74 that runs along the through hole 741 is in close contact with the outer peripheral surface of the wiring portion 72. In other words, the sealing member 74 seals the gap between the edge of the fan case 102 that runs along the opening 60 of the lead wire housing 6, the top plate 21 of the lid 2, and the outer peripheral surface of the wiring portion 72. The placement of the sealing member 74 prevents water, dust, and the like from entering the lead wire housing 6 at the openings 60 and 741.

[0076] <1-3-5. Mounting Part 75> The mounting member 75 surrounds the wiring portion 72 and is disposed on the outer peripheral surface of the wiring portion 72 inside the main drawer portion 6. The mounting member 75 is rotatable together with the wiring portion 72 in the circumferential direction based on a central axis J2 that extends in the third direction Y along the wiring portion 72. The support portion 61 supports the mounting member 75 (particularly the main body member 751 described below) so that the mounting member 75 is rotatable about the central axis J2. As described above, the central axis J2 extends along the wiring portion 72 in the extension direction De of the wiring portion 72 within the fan case 102 (the third direction Y).

[0077] The mounting member 75 has a main body member 751 and a flat portion 752 .

[0078] The main body member 751 has a cylindrical shape that extends in the extension direction De and surrounds the wiring portion 72 and the flat portion 73. When viewed from the third direction Y, at least a portion of the main body member 751 is accommodated in the recess 612 and is slidably and rotatably held relative to the inner surface of the recess 612 (the end surface of the wall portion 611 on the one side of the third direction Y1 and the end surface of the protrusion 613 on the side of the lead-out portion 7). In this embodiment, the main body member 751 has a shape that is continuous and uninterrupted over the entire circumferential area centered on the central axis J2 (see FIG. 1 , etc.). However, this is not limiting, and the main body member 751 may have a shape that has a slit in part of the entire circumferential area centered on the central axis J2. For example, when viewed from the third direction Y, the main body member 751 may be formed into a so-called C-shape, so that the slit in the C-shape can be elastically widened in the circumferential direction. Furthermore, by inserting the wiring portion 72 into the slit in this state, the wiring portion 72 can be fitted inside the radially inner end portion of the main body member 751. Therefore, the mounting member 75 can be easily disposed on the outer peripheral surface of the wiring portion 72 and on the radially outer side of the flat plate portion 73.

[0079] Preferably, the length of the main body member 751 in the extension direction De inside the lead-out accommodating portion 6 is longer than the distance between the end of the wall portion 611 (particularly its end on the side in the first direction Z1) on the side in the extension direction De1 and the end face of the sealing member 74 on the side in the other extension direction De2 (particularly the end on the side in the third direction Y2 of the through-hole 741). This allows the main body member 751 to maintain its hold by the support portion 61 even when the lead-out portion 7 is drawn out in the one extension direction De1. However, this example does not exclude a configuration in which the length of the main body member 751 in the extension direction De inside the lead-out accommodating portion 6 is equal to or shorter than the above-mentioned distance between the wall portion 611 and the sealing member 74 (particularly the through-hole 741).

[0080] Furthermore, the main body member 751 is positioned closer to the one side of the third direction Y1 than the end of the wiring portion 72 on the other side of the extension direction De2. Preferably, the length of the main body member 751 in the extension direction De inside the lead-out accommodating portion 6 is longer than the distance between the end of the wiring portion 72 on the other side of the extension direction De2 and the inner wall 13 (the end face on the one side of the third direction Y1). In this way, even if the lead-out portion 7 is pushed in the other side of the extension direction De2, the main body member 751 can maintain its hold by the support portion 61. However, this example does not exclude a configuration in which the length of the main body member 751 in the extension direction De inside the lead-out accommodating portion 6 is equal to or shorter than the above-mentioned distance between the wiring portion 72 and the inner wall 13.

[0081] The flat surface portion 752 is disposed on the radially inner side of the main body member 751 of the mounting member 75. The flat surface portion 752 faces and abuts against the outer surface (radially outer end surface) of the flat plate portion 73 in the radial direction based on a central axis J2 that extends in the extension direction De along the wiring portion 72 within the lead-out wire accommodating portion 6. This surface contact between the two prevents movement of the mounting member 75 relative to the outer peripheral surface of the wiring portion 72 in the circumferential direction based on the central axis J2. In other words, the mounting member 75 can rotate circumferentially together with the wiring portion 72.

[0082] In the extension direction De within the lead-out accommodating section 6, the length of the flat plate portion 73 is longer than the length of the planar portion 752 of the mounting member 75, and preferably longer than the length of the range in which the wiring portion 72 can be drawn out. According to the latter, even if the mounting member 75 moves relative to the wiring portion 72 in the extension direction De within the lead-out accommodating section 6, the surface contact between the flat plate portion 73 and the planar portion 752 can be maintained. As a result, even if the wiring portion 72 is pulled out of or pushed into the opening 60, the mounting member 75 can rotate in the circumferential direction together with the wiring portion 72.

[0083] There are six flat surface portions 752 arranged in the circumferential direction. Each flat surface portion 752 is in surface contact with a respective flat plate portion 73. However, this is not limiting, and the number of flat surface portions 752 may be one or a plurality other than six. Preferably, the number of flat surface portions 752 arranged in the circumferential direction is the same as the number of flat plate portions 73 arranged in the circumferential direction on the outer peripheral surface of the wiring portion 72.

[0084] The mounting member 75 also has a first engagement portion 753. The first engagement portion 753 engages with a part of the support portion 61 when the mounting member 75 rotates about the central axis J2 to the end of its rotatable range. For example, the support portion 61 has a second engagement portion 614 that can engage with the first engagement portion, which moves in the circumferential direction. When the mounting member 75 (and the wiring portion 72) rotates relative to the support portion 61, the first engagement portion 753 engages with the second engagement portion 614, thereby limiting the rotation range of the mounting member 75 in the circumferential direction around the central axis J2.

[0085] During maintenance of the blower device 100, the wiring part 72 is likely to rotate together with the mounting member 75 due to changes in the orientation of the connector 71, and this rotation may result in a disconnection. Therefore, by limiting the rotation range of the mounting member 75, it is possible to prevent the wiring part 72 from rotating beyond the allowable amount, thereby suppressing or preventing problems such as disconnection. This allows workers to perform maintenance with peace of mind. In other words, the workability of maintenance of the blower device 100 can be improved.

[0086] In this embodiment, the first engagement portion 753 includes a protrusion 754 of the mounting member 75. The protrusion 754 protrudes radially outward from the outer peripheral surface of the mounting member 75, with the central axis J2 as the reference. The mounting member 75 has the protrusion 754. In this embodiment, the protrusion 754 protrudes radially outward from the radially outer surface of the main body member 751, with the central axis J2 as the reference. In FIG. 1 , the protrusion 754 is on one side Y1 of the third direction of the mounting member 75, and is disposed between the pair of convex portions 613 in the second direction X.

[0087] Furthermore, the second engagement portion 614 engageable with the first engagement portion 753 includes the opposing portion 615 of the support portion 61. In other words, the support portion 61 has the opposing portion 615. The opposing portion 615 faces the protruding portion 754 of the mounting member 75 in the circumferential direction based on the central axis J2, and can come into contact with the protruding portion 754 when the mounting member 75 rotates in the circumferential direction based on the central axis J2.

[0088] In this embodiment, the facing portion 615 is an end surface of the convex portion 613 on the mounting member 75 side in the second direction X. However, if the end portion of the convex portion 613 on the one side in the third direction Y1 is located further in the other side in the third direction Y2 than the end portion of the side wall 121 on the one side in the third direction Y1 and the end portion of the inner wall 13 on the one side in the third direction Y1, the facing portion 615 may be the end surface of the convex portion 613 on the one side in the third direction Y1.

[0089] Furthermore, when the convex portion 613 on the one side of the second direction X1 is omitted, the end face of the inner wall 14 on the other side of the second direction X2 functions as the opposing portion 615 on the one side of the second direction X1. Furthermore, when the convex portion 613 on the other side of the second direction X2 is omitted, the end face of the side wall 121 on the one side of the second direction X1 functions as the opposing portion 615 on the other side of the second direction X2.

[0090] When the mounting member 75 rotates relative to the support portion 61, the abutment between the protruding portion 754 and the opposing portion 615 limits the range of rotation of the mounting member 75 in the circumferential direction around the center axis J2.

[0091] For example, when the protruding portion 754 moves in one circumferential direction, it abuts against the opposing portion 615 on one side of the circumferential direction, thereby preventing the protruding portion 754 from moving on that side in the circumferential direction. When the protruding portion 754 moves in the other circumferential direction, it abuts against the opposing portion 615 on the other side of the circumferential direction, thereby preventing the protruding portion 754 from moving on the other side in the circumferential direction.

[0092] This makes it possible to more reliably limit the range of rotation of mounting member 75. This also makes it possible to more reliably prevent mounting member 75 (particularly wiring portion 72) from rotating beyond the allowable amount. This further improves the workability of maintenance of blower device 100.

[0093] The rotation range of the mounting member 75 is adjusted by the circumferential position range between the other circumferential end of the opposing portion 615 on one circumferential side and the one circumferential end of the opposing portion 615 on the other circumferential side.

[0094] <2. Notes> The above describes an embodiment of the present invention. Note that the above embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component and each process, and that these modifications are within the scope of the present invention.

[0095] <3. Summary> The following will provide an overview of the embodiments described so far.

[0096] For example, the blower device disclosed herein may An axial fan, a fan case that houses the axial flow fan; Equipped with The fan case includes: a cylindrical box body with a bottom that is open at one end in a predetermined first direction; a lid portion for covering an opening at one end of the box body in the first direction; and the box body has a bottom to which the axial flow fan is fixed, In the first direction, the axial flow fan is configured to face at least one of the lid portion and the bottom portion with a gap therebetween (first configuration).

[0097] The blower device of the first configuration is The bottom portion is a boss protruding in one of the first directions; a female thread portion extending from one end of the boss in the first direction to the other end in the first direction; and the axial flow fan has a through hole extending in the first direction, A headed rod-shaped male screw that is screwed into the female threaded portion may be inserted into the through hole from one side in the first direction (second configuration).

[0098] The blower device disclosed in this specification is An axial fan, a fan case having a board accommodating portion for accommodating a board electrically connected to the axial flow fan; a filling member filled in the substrate accommodating portion to cover the substrate; Equipped with The inner surface of the substrate accommodating portion, which surrounds the substrate and extends in at least a predetermined first direction, is configured (third configuration) so that a marker portion is arranged at a position in the first direction that is the same as one side end face of the filling member in the first direction.

[0099] The blower device of the third configuration is the fan case further includes a stepped portion disposed on an inner surface of the board accommodating portion that surrounds the board, The mark portion may be a surface of the step portion facing at least one side in the first direction (fourth configuration).

[0100] Furthermore, the blower device of the third or fourth configuration is The mark portion may be configured to extend in a second direction perpendicular to the first direction (fifth configuration).

[0101] Furthermore, the blower device disclosed in this specification is a fan case that houses the fan and the board; a connector disposed outside the fan case; a wiring portion that is drawn to the outside of the fan case and electrically connects at least one of the fan and the board to the connector; an attachment member that surrounds the wiring portion, is disposed on an outer peripheral surface of the wiring portion, and is rotatable together with the wiring portion and around the wiring portion; Equipped with the fan case further includes a support portion that supports the mounting member rotatably about a central axis that extends along the wiring portion in an extension direction of the wiring portion within the fan case, the extension direction is a direction in which the wiring portion extends, the mounting member has a first engaging portion, and the support portion has a second engaging portion that can be engaged with the first engaging portion that moves in a circumferential direction, When the mounting member rotates relative to the support portion, the first engagement portion is configured to engage with the second engagement portion to limit the rotation range of the mounting member in the circumferential direction based on the central axis (sixth configuration).

[0102] Furthermore, the blower device of the sixth configuration is the mounting member has a protruding portion that protrudes radially outward from an outer circumferential surface of the mounting member relative to the central axis, the support portion has an opposing portion that opposes the protruding portion in a circumferential direction based on the central axis, A seventh configuration may be adopted in which, when the mounting member rotates relative to the support portion, the range of rotation of the mounting member is limited by the contact between the protruding portion and the opposing portion.

[0103] In addition, the blower device of the sixth or seventh configuration may be a flat plate portion extending in the extension direction is disposed on an outer peripheral surface of the wiring portion; The mounting member may have a configuration (8th configuration) in which a flat portion is arranged at the radial inner end thereof, facing and abutting against the outer surface of the flat portion in a radial direction based on an axis extending in the extension direction along the wiring portion.

[0104] In addition, the blower device having any one of the sixth to eighth configurations described above may be The wiring portion may be configured to be movable in the extension direction relative to the fan case (ninth configuration). [Industrial Applicability]

[0105] The present invention is useful for a blower device in which a fan is housed in a case. [Explanation of symbols]

[0106] 100... Blower device, 101... Axial flow fan, 1011... Impeller, 1012... Motor part, 1013... Housing, 1014... Through hole, 102... Fan case, 103... Male screw, 104... Board, 1... Box body, 10... Opening, 11... Bottom, 111... Hole part, 1111... Hole, 112... Boss, 113... Female thread portion, 114... protrusion portion, 12... side wall portion, 121, 122, 123, 124... side wall, 13, 14... inner wall, 2... lid portion, 21... top plate portion, 22... opening, 3... fan accommodating portion, 5... board accommodating portion, 51... filling member, 52... marking portion, 53... step portion, 6... lead wire accommodating portion, 60... opening, 61... support portion, 611 wall portion, 612 recessed portion, 613 protruding portion, 614 second engaging portion, 615 opposing portion, 7 lead-out portion, 71 connector, 72 wiring portion, 73 flat plate portion, 74 sealing member, 741 through hole, 75 mounting member, 751 main body member, 752 flat portion, 753 first engaging portion, 754 · Protrusion, Z··· First direction, Z1··· One side of the first direction, Z2··· The other side of the first direction, X··· Second direction, X1··· One side of the second direction, X2··· The other side of the second direction, Y··· Third direction, Y1··· One side of the third direction, Y2··· The other side of the third direction, De··· Extension direction, De1··· One side of the extension direction, De2··· The other side of the extension direction, J1··· Rotation axis, J2··· Central axis

Claims

1. An axial fan, a fan case that houses the axial flow fan; Equipped with The fan case includes: a cylindrical box body with a bottom that is open at one end in a predetermined first direction; a lid portion for covering an opening at one end portion of the box body in the first direction; and the box body has a bottom to which the axial flow fan is fixed, In the first direction, the axial fan faces at least one of the lid portion and the bottom portion with a gap therebetween.

2. The bottom portion is a boss protruding in one of the first directions; a female thread portion extending from one end of the boss in the first direction to the other end in the first direction; and the axial flow fan has a through hole extending in the first direction, The blower device according to claim 1 , wherein a headed rod-shaped male screw that is screwed into the female threaded portion is inserted into the through hole from one side in the first direction.

3. An axial fan, a fan case having a board accommodating portion for accommodating a board electrically connected to the axial flow fan; a filling member filled in the substrate accommodating portion to cover the substrate; Equipped with A blower device in which a marker portion is arranged on an inner surface of the substrate accommodating portion that surrounds the substrate and extends in at least a predetermined first direction, at the same position in the first direction as one side end face of the filling member in the first direction.

4. the fan case further includes a stepped portion disposed on an inner surface of the board accommodating portion that surrounds the board, The blower device according to claim 3 , wherein the mark portion is a surface of the step portion facing at least one side of the first direction.

5. The blower device according to claim 3 or 4, wherein the mark portion extends in a second direction perpendicular to the first direction.

6. a fan case that houses the fan and the board; a connector disposed outside the fan case; a wiring portion that is drawn to the outside of the fan case and electrically connects at least one of the fan and the board to the connector; an attachment member that surrounds the wiring portion, is disposed on an outer peripheral surface of the wiring portion, and is rotatable together with the wiring portion and around the wiring portion; Equipped with the fan case further includes a support portion that supports the mounting member rotatably about a central axis that extends along the wiring portion in an extension direction of the wiring portion within the fan case, the extension direction is a direction in which the wiring portion extends, the mounting member has a first engaging portion, and the support portion has a second engaging portion that can be engaged with the first engaging portion that moves in a circumferential direction, A blower device wherein, when the mounting member rotates relative to the support portion, the first engagement portion engages with the second engagement portion to limit the rotation range of the mounting member in the circumferential direction based on the central axis.

7. the mounting member has a protruding portion that protrudes radially outward from an outer circumferential surface of the mounting member relative to the central axis, the support portion has an opposing portion that opposes the protruding portion in a circumferential direction based on the central axis, The air blower device according to claim 6 , wherein when the mounting member rotates relative to the support part, a rotation range of the mounting member is limited by contact between the protruding part and the opposing part.

8. a flat plate portion extending in the extension direction is disposed on an outer peripheral surface of the wiring portion; The blower device according to claim 6 or claim 7, wherein a flat portion is arranged at a radially inner end of the mounting member, the flat portion being opposed to and in contact with an outer surface of the flat portion in a radial direction based on the central axis.

9. The blower device according to claim 6 or 7, wherein the wiring portion is movable in the extension direction relative to the fan case.

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