Abstract: An air blower includes an impeller rotatable about a central axis extending vertically, a motor to rotate the impeller, and a holder to hold the motor. The air blower is a centrifugal air blower which generates a radial airflow perpendicular to the central axis. The holder includes a base supporting the motor, attachments on a radial directional-outer side of the impeller, arms connecting the base and each of the attachments, and a wall surface on a side of the impeller, between the base and each attachment, and opposing a radial-directional inner side. An axial lower end of the impeller is located below an axial upper end of the wall surface.

Abstract: In an array substrate, a plurality of wiring lines include a first wiring line located between a first pixel electrode and a second pixel electrode in a first direction, and a second wiring line located between a third pixel electrode and a fourth pixel electrode in the first direction. A plurality of switching elements include a first switching element and a second switching element. A plurality of common electrodes include a first common electrode overlapping the first pixel electrode, the second pixel electrode, the third pixel electrode, the first wiring line, and a first semiconductor portion, and a second common electrode overlapping the fourth pixel electrode and the second wiring line. Further, there is provided a first overlapping portion that is disposed overlapping a second semiconductor portion and has the same potential as that of any of the plurality of common electrodes.

Abstract: A centrifugal fan includes an impeller with a base expanded radially, vanes arranged circumferentially, extending from a radially inner side to a radially outer side, and ends thereof at one axial side being connected to the base, and a ring portion connecting ends of the vanes at the other axial side. The vanes include first vanes and second vanes, when viewed axially, the lengths of the second vanes are larger than the lengths of the first vanes, the first vanes and the second vanes are circumferentially arranged alternatingly. Gaps are provided between radially outer ends of the first vanes and the second vanes that are circumferentially adjacent to each other, and sizes of circumferentially adjacent ones of the gaps are different from each other.

Abstract: A hand dryer includes a drying chamber, a blowing chamber, a duct, and a hose. The blowing chamber is below the drying chamber in a first direction along an up-down direction. The duct is cylindrical or substantially cylindrical, and connects a lower portion of the drying chamber with the blowing chamber. At least one hose is provided to connect an upper portion of the drying chamber with the blowing chamber. The upper portion of the drying chamber includes a drying-chamber opening, open in the first direction and communicating with an outside. In the drying chamber includes a blower, producing an airflow passing from bottom up through the hose. The duct includes a duct upper portion, a duct connection portion, and a duct lower portion. The duct upper portion, wider in the second direction, communicates with the lower portion of the drying chamber.

Abstract: A centrifugal fan includes an impeller with a base expanded radially, vanes arranged circumferentially, extending from a radially inner side to a radially outer side, and ends thereof at one axial side being connected to the base, and a ring portion connecting ends of the vanes at the other axial side. The vanes include first vanes and second vanes, when viewed axially, the lengths of the second vanes are larger than the lengths of the first vanes, the first vanes and the second vanes are circumferentially arranged alternatingly. Gaps are provided between radially outer ends of the first vanes and the second vanes that are circumferentially adjacent to each other, and sizes of circumferentially adjacent ones of the gaps are different from each other.

Abstract: Provided is a holding member that holds a motor. The holding member includes a base and multiple attachment parts. The base has the motor disposed on an upper surface thereof with a center axis of rotation of the motor arranged in an up-down direction. The attachment part is disposed radially outside the base. The attachment part includes a frame, a pair of grippers, a first projecting part, and a second projecting part. The frame surrounds an insertion hole penetrating in an axial direction and is connected to the base. The pair of grippers is disposed inside the insertion hole and extends radially outward from the base. The first projecting part is disposed between the pair of grippers and projects radially outward from the base. The second projecting part projects from the frame into the insertion hole.

Abstract: An air blower includes an impeller rotatable about a central axis extending vertically, a motor to rotate the impeller, and a holder to hold the motor. The air blower is a centrifugal air blower which generates a radial airflow perpendicular to the central axis. The holder includes a base supporting the motor, attachments on a radial directional-outer side of the impeller, arms connecting the base and each of the attachments, and a wall surface on a side of the impeller, between the base and each attachment, and opposing a radial-directional inner side. An axial lower end of the impeller is located below an axial upper end of the wall surface.

Abstract: An air blower includes an impeller rotatable about a central axis extending vertically, a motor to rotate the impeller, and a holder to hold the motor. The holder includes a base on which the motor is provided, attachments on a radial directional-outer side of the impeller, arms connecting the base and the attachments, and a wall surface on a side where the impeller is disposed, between the base and each attachment, and facing a radial-directional inner side. The wall surface includes a first surface extending outwardly in the radial direction and directed towards the front in the rotational direction of the impeller.

Abstract: A blower includes an impeller rotatable about a central axis and a motor driving the impeller. The impeller includes a first impeller, and a second impeller connected to the first impeller. The first impeller includes a base and first blades arranged in a circumferential direction. The base includes a cup portion of which an axially upper end is closed and a flange extending radially outward from an axially lower end of the cup portion. The second impeller includes a shroud with an annular or substantially annular shape about the central axis and axially opposes an upper surface of the flange, and second blades arranged in the circumferential direction. Each first blade protrudes axially upward from the flange. Each second blade protrudes axially downward from the shroud.

Abstract: A motor includes a rotor, a stator, and a circuit board below the stator. The stator includes an insulator to cover at least a portion of each of an upper surface, a lower surface, and circumferential side surfaces of each of teeth of the stator, coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween, and a drawn-out wire drawn out from the coils and electrically connected to the circuit board. A lower portion of the insulator includes a guide radially outward of the coils and including a wall extending downward from a lower surface of the insulator and a bend extending radially outward from a lower end of the wall. At least a portion of the drawn-out wire extends in a circumferential direction along a radially outer surface of the wall.

Abstract: An air blower includes an impeller rotatable about a central axis extending vertically, a motor to rotate the impeller, and a holder to hold the motor. The holder includes a base on which the motor is provided, attachments on a radial directional-outer side of the impeller, arms connecting the base and the attachments, and a wall surface on a side where the impeller is disposed, between the base and each attachment, and facing a radial-directional inner side. The wall surface includes a first surface extending outwardly in the radial direction and directed towards the front in the rotational direction of the impeller.

Abstract: A cooling system includes a radiator, a compressor that compresses a refrigerant to send the refrigerant to the radiator, and a blower that sends out an airflow suctioned from an intake port that is directed to a first direction from an exhaust port to a second direction by a rotation of an impeller around a rotation axis extending in the first direction. The first direction is parallel or substantially parallel to a direction normal to an installation surface on which the compressor is installed. The second direction is orthogonal or substantially orthogonal to the first direction. The radiator is in the first direction relative to the blower. The compressor is in the second direction relative to the radiator and the blower.

Abstract: A motor includes a rotor, a stator, and a circuit board below the stator. The stator includes an insulator to cover at least a portion of each of an upper surface, a lower surface, and circumferential side surfaces of each of teeth of the stator, coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween, and a drawn-out wire drawn out from the coils and electrically connected to the circuit board. A lower portion of the insulator includes a guide radially outward of the coils and including a wall extending downward from a lower surface of the insulator and a bend extending radially outward from a lower end of the wall. At least a portion of the drawn-out wire extends in a circumferential direction along a radially outer surface of the wall.

Abstract: A blower includes an impeller rotatable about a central axis extending in a vertical direction, a motor on a lower side of the impeller that rotates the impeller about the central axis, and a duct including an airflow passage in an inner space, a suction port through which a fluid flows in the inner space, and an air outlet through which the fluid is discharged from the inner space, the impeller being accommodated in the duct. The impeller includes blades arranged in a circumferential direction, an annular shroud that connects upper portions of the blades and includes an opening opposing the suction port in an axial direction, and a base plate that connects lower portions of the blades and extends in a radial direction. The duct includes a cover covering at least a portion of the blade and an upper portion of the shroud. An inner diameter of the shroud is equal to or larger than an outer diameter of the base plate.

Abstract: A motor includes a rotary portion including a shaft having a center on a vertically extending central axis. A bearing portion rotatably supports the shaft. A stationary portion includes a stator. The bearing portion is radially outward of the shaft and includes a sleeve bearing that contains a lubricating oil; and a housing radially outward of the sleeve bearing. The stator includes a stator core that is radially outward of the housing; and an insulator that covers at least part of the stator core. The insulator includes an upper insulating portion that covers an upper face of the stator core; a connecting portion that extends radially inward from the upper insulating portion; and an insulator inclined portion that is inclined in a direction away from the central axis, away from the connecting portion.

Abstract: A motor includes a rotary portion including a shaft with a central axis. A bearing portion is radially outward of and rotatably supporting the shaft. A stationary portion includes a stator including a stator core radially outward of the housing; and an insulator at least partially covering the stator core. The bearing portion includes a sleeve bearing containing a lubricating oil; and a housing radially outward of the sleeve bearing. The shaft holds a first member above the sleeve bearing and extending radially outward from the shaft. The housing holds a second member above the sleeve bearing and below the first member and extending radially inward from the housing. The first and second members face each other with a gap therebetween. The second member includes a first hole surrounding the shaft; and at least one second hole radially outward of the first hole.

Abstract: A dryer includes a body portion arranged to hold a motor, a first tubular portion arranged to at least partially cover an outer circumferential portion of the body portion, and a second tubular portion arranged axially behind the first tubular portion, and arranged to at least partially cover the outer circumferential portion of the body portion. An outer circumferential joining portion included in the body portion is held between an axial rear edge portion of the first tubular portion and an axial front edge portion of the second tubular portion.

Abstract: A dryer includes a body portion arranged to hold a motor, a first tubular portion arranged to at least partially cover an outer circumferential portion of the body portion, and a second tubular portion arranged axially behind the first tubular portion, and arranged to at least partially cover the outer circumferential portion of the body portion. An outer circumferential joining portion included in the body portion is held between an axial rear edge portion of the first tubular portion and an axial front edge portion of the second tubular portion.