Air blower

Abstract

To provide a blower capable of preventing deviation of an airflow by a simple structure.SOLUTION: A blower is equipped with an air duct member 21 that forms a blowing passage having an exhaust port 213a, and a blowing fan 22 arranged in the blowing passage. The blower blows air from the blowing fan 22 from the exhaust port 213a in a first direction. The air duct member 21 has a fan case portion 211 of a scroll-shape storing the blowing fan 22, and a duct portion 213 that is provided on a downstream side of the fan case portion 211 and connects a communication port 215 with the fan case portion 211 and the exhaust port 213a. The duct portion 213 bends in the first direction after going from the communication port 215 in a second direction intersecting the first direction. A peripheral wall portion 733 connected to a tongue portion 735 in the duct portion 213 is configured to make an airflow passing through a vicinity part of the tongue portion 735 flow along the peripheral wall portion 733, on a cross-section orthogonal to a rotation axis O of the blowing fan 22.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a blower device including an air passage member and a blower fan.

Background Art

[0002] As a blower device, there has been proposed a blower device "including a suction port and a blowout port that open in a main body housing, a blower passage that is arranged in the main body housing and communicates the suction port and the blowout port, a blower fan that is arranged in the blower passage, and a plurality of wind direction plates that are arranged at the blowout port to change the wind direction and are arranged side by side in one direction" (for example, Patent Document 1). In this blower device, when the blower fan is driven, the indoor air flows into the blower passage from the suction port, and the air flow flowing through the blower passage is sent out from the blowout port in a direction corresponding to the direction of the wind direction plates.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to prevent the deviation of the air flow sent out from the blowout port, the above conventional blower device needs to provide a plurality of wind direction plates in the blower passage, which has the disadvantages that the structure of the blower passage becomes complicated and the manufacturing cost increases. An object of the present invention is to provide a blower device that can prevent the deviation of the air flow with a simple structure.

Means for Solving the Problems

[0005] The blower device according to the present invention includes an air duct member that forms a blower passage having an exhaust port, and a blower fan disposed in the blower passage, and blows air from the blower fan in a first direction from the exhaust port. In the blower device, the air duct member has a scroll-shaped fan case portion that houses the blower fan, and a duct portion provided on the downstream side of the fan case portion and connecting a communication port with the fan case portion and the exhaust port. The duct portion curves so as to face the first direction after facing a second direction intersecting the first direction from the communication port, and a peripheral wall portion connected to a tongue portion in the duct portion is configured such that an air flow passing through a vicinity portion of the tongue portion flows along the peripheral wall portion in a cross section orthogonal to a rotation axis of the blower fan. The blower device according to the present invention includes an air duct member that forms a blower passage having an exhaust port, and a blower fan disposed in the blower passage, and blows air from the blower fan in a first direction from the exhaust port. In the blower device, the air duct member has a scroll-shaped fan case portion that houses the blower fan, and a duct portion provided on the downstream side of the fan case portion and connecting a communication port with the fan case portion and the exhaust port. The duct portion curves so as to face the first direction after facing a second direction intersecting the first direction from the communication port, and a peripheral wall portion connected to a tongue portion in the duct portion has a flat portion extending from a tip of the tongue portion toward the exhaust port, and an angle between a tangent line that contacts an outer periphery of the blower fan and passes through the tip of the tongue portion and the flat portion is smaller than an angle between the flat portion and the second direction.

Effects of the Invention

[0006] According to the above configuration, by forming the peripheral wall portion into a predetermined structure, it is possible to prevent the bias of the air flow.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0008] <Summary> The first blower device according to one aspect of the embodiment includes an air duct member forming an air duct having an exhaust port, and a blower fan disposed in the air duct, and blows air from the blower fan in a first direction from the exhaust port. In the blower device, the air duct member has a scroll-shaped fan case portion that houses the blower fan, and a duct portion provided on the downstream side of the fan case portion and connecting a communication port with the fan case portion and the exhaust port. The duct portion curves so as to face the first direction after facing a second direction intersecting the first direction from the communication port. The peripheral wall portion connected to the tongue portion in the duct portion is configured such that, in a cross section orthogonal to the rotation axis of the blower fan, the airflow passing through the vicinity of the tongue portion flows along the peripheral wall portion. Thereby, it is not necessary to provide a wind direction plate or a guide plate in the air duct, the air duct member can be easily manufactured with a simple structure, and the bias of the air sent out from the exhaust port can be reduced.

[0009] The second blower device according to one aspect of the embodiment includes an air duct member forming an air duct having an exhaust port, and a blower fan disposed in the air duct, and blows air from the blower fan in a first direction from the exhaust port. In the blower device, the air duct member has a scroll-shaped fan case portion that houses the blower fan, and a duct portion provided on the downstream side of the fan case portion and connecting a communication port with the fan case portion and the exhaust port. The duct portion curves so as to face the first direction after facing a second direction intersecting the first direction from the communication port. The peripheral wall portion connected to the tongue portion in the duct portion has a flat portion extending from the tip of the tongue portion toward the exhaust port, and the angle between a tangent line that contacts the outer periphery of the blower fan and passes through the tip of the tongue portion and the flat portion is smaller than the angle between the flat portion and the second direction. Thereby, the airflow from the blower fan is not directly blown against the peripheral wall portion connected to the tongue portion, and the peripheral wall portion attracts the airflow flowing through the vicinity of the tongue portion, and the traveling direction of the airflow can be changed toward the exhaust port.

[0010] The third blower according to another aspect of the embodiment is the second blower, wherein the air duct member has a second flat portion extending in the second direction from the downstream end of the flat portion. Thereby, the traveling direction of the airflow can be changed without separating the airflow flowing along the peripheral wall portion from the peripheral wall portion. The fourth blower according to another aspect of the embodiment is any one of the first to third blowers, wherein in a cross section orthogonal to the rotation axis of the blower fan, the distance between the tip of the tongue portion and an imaginary line passing through the rotation axis and parallel to the second direction is 60 to 75% of the radius of the blower fan. Thereby, the air passage is narrowed by the tongue portion, a deceleration width from the airflow velocity before passing through the tongue portion to the airflow velocity after passing through can be ensured, the airflow easily flows along the peripheral wall portion after passing through the tongue portion, and the traveling direction of the airflow can be changed. The fifth blower according to another aspect of the embodiment is any one of the second to fourth blowers, wherein the peripheral wall portion of the duct portion that is not connected to the tongue portion has an inclined portion approaching the exhaust port in the second direction as it moves away from the end portion on the side opposite to the tongue portion at the communication port in a cross section orthogonal to the rotation axis of the blower fan. Thereby, the traveling direction of the airflow can be changed without separating the airflow flowing along the peripheral wall portion from the peripheral wall portion.

[0011] The sixth blower according to another aspect of the embodiment is any one of the first to fifth blowers, wherein a heating portion is provided on the upstream side or the downstream side of the exhaust port of the duct portion. Thereby, the bias of the air passing through the heating portion is reduced, and temperature unevenness of the warm air sent out can be suppressed. A seventh air blower according to another aspect of the embodiment includes, in any one of the first to sixth air blowers, a housing that houses the air duct member and the air blower fan. The housing includes an air outlet facing the exhaust port of the air duct member and a louver provided at the air outlet. The louver includes a plurality of air direction plates rotatably provided around a rotation axis orthogonal to the first direction, and a connecting plate that connects the plurality of air direction plates at intervals in a direction orthogonal to the first direction and the rotation axis and is supported so as to be movable in the orthogonal direction. When the connecting plate moves in the orthogonal direction, the plurality of air direction plates rotate. Thereby, the traveling direction of the air blown out from the air outlet can be adjusted.

[0012] <Embodiment> 1. Overall Configuration In the embodiment, as an example of the air blower, a heating device as shown in FIG. 1 will be described. As shown in FIGS. 1 to 3, the heating device X includes a heating unit 3 in addition to the air blowing unit 2 in the housing 1. The air blowing unit 2 mainly blows out the air sucked from the suction port 12a of the housing 1 from the air outlet 11a of the housing 1. The heating unit 3 heats the air sent out by the air blowing unit 2 before it is blown out from the air outlet 11a of the housing 1. The heating device X further includes an operation unit, a display unit, and a control unit. The operation unit receives the user's operation at the operation unit 41 and outputs it to the control unit. The display unit displays the content received by the operation unit 41 and the like on the display unit 43 by the control unit. The control unit controls the display unit 43, the air blowing unit 2, and the heating unit 3 according to the content received by the operation unit 41. Here, the operation unit 41 and the display unit 43 are mounted on a single substrate 45, and the operation unit and the display unit are provided as one operation display unit 4. The heating device X includes a human presence sensor 5 and a louver 8 for adjusting the direction of the air blown out from the air outlet 11a. The heating device X includes a power supply unit that supplies power to each unit and the like. Here, the electronic components constituting the power supply unit and the electronic components constituting the control unit are mounted on a single substrate 65, and the power supply unit and the control unit are provided as a single power control unit 6. In addition, with the side of the housing 1 where the air outlet 11a is located being the front side, when looking directly at the air outlet 11a, the side located on the right side in the left - right direction is, for the sake of convenience, referred to as the right side. Hereinafter, the housing 1, the blower unit 2, the heating unit 3, and the louver 8 will be described.

[0013] 2. Housing As shown in FIG. 1, the housing 1 is box - shaped (rectangular parallelepiped - shaped). Here, for example, it is vertically long and box - shaped. The housing 1 has an air outlet 11a on the front wall 11. A human presence sensor 5 is provided at the center of the front wall 11, and in FIG. 1, a cover 55 for protecting the human presence sensor 5 is shown. Thereby, a person can be detected with high precision. The housing 1 has a suction port 12a on the rear wall 12. A filter 19 is detachably attached to the rear wall 12 corresponding to the suction port 12a. As shown in FIGS. 2 and 3, an operation display unit 4 is provided on the upper wall 13 of the housing 1. Inside the housing 1, a blower unit 2, a heating unit 3, and a power control unit 6 are accommodated and supported. Here, as shown in FIG. 2 or FIG. 3, the air outlet 11a is provided on the upper side, the suction port 12a is provided on the lower side, the blower unit 2 is arranged on the lower side and the rear side, the heating unit 3 is arranged on the upper front side, and the power control unit 6 is arranged on the side (right side) where the drive motor of the blower unit 2 is arranged in the left - right direction. Thereby, the heating device X can be miniaturized.

[0014] 3. Blower Unit As shown in Fig. 4, the air supply unit 2 includes at least an air duct member 21 having an air inlet 211a and an air outlet 213a, and a blower fan 22. Here, a drive motor 23 is also included. Thus, air can be sucked in from the air inlet 211a and exhausted from the air outlet 213a. The air passage from the air inlet 211a to the air outlet 213a is defined as the air supply passage. Hereinafter, each part will be described.

[0015] (1) Air duct member As shown in Fig. 4, the air duct member 21 has a fan case portion 211 that houses the blower fan 22, and a duct portion 213 provided on the downstream side of the fan case portion 211. The fan case portion 211 here has a scroll shape. The air duct member 21 has an air inlet 211a for the blower fan 22 in the fan case portion 211. As shown in Fig. 3, the air duct member 21 has an air outlet 213a in the duct portion 213 for exhausting the air from the blower fan 22. Here, as shown in Fig. 9, the opening at the connection portion between the fan case portion 211 and the duct portion 213 is defined as the communication port 215. The fan case portion 211 has a tongue portion (735) connected to one end of the communication port 215. As shown in Fig. 3, a heating unit 3 is provided inside the duct portion 213 on the downstream side, and an air outlet 213a is formed at the downstream end of the duct portion 213. As shown in Figs. 5 and 6, the air duct member 21 is composed of a first member 7A and a second member 7B, and the first member 7A constitutes most of the fan case portion 211 and the duct portion 213.

[0016] (1-1) First member Mainly, it will be described with reference to Figs. 5 and 6. The first member 7A has an end wall 71A and a peripheral wall 73A. Here, the end wall 71A is orthogonal to the rotation axis O (see Fig. 9) of the blower fan 22, and the peripheral wall 73A is parallel to the rotation axis O. The direction parallel to the rotation axis O is also referred to as the rotation axis direction. (1-1-1) End wall The end wall 71A has a case portion 711A that constitutes a part of the fan case portion 211, and a duct portion 712A that constitutes a part of the duct portion 213. (1-1-2) Peripheral wall The peripheral wall 73A has a case portion 731A that forms part of the fan case portion 211 and a duct portion 732A that forms part of the duct portion 213. The duct portion 732A of the peripheral wall 73A faces (is connected to) an inner peripheral wall portion 733A that faces the end portion 215a located on the rotation direction side (the direction of the arrow in FIG. 9) of the blower fan 22 at the communication port 215, and an outer peripheral wall portion 734A that faces (is connected to) the end portion 215b located on the reverse rotation direction side at the communication port 215. In other words, at the angle between the case portion 731A and the duct portion 732A connected via the communication port 215, the side larger than 90 degrees is the outer peripheral wall portion 734A, and the side smaller than 90 degrees is the inner peripheral wall portion 733A. That is, the side connected to the tongue portion 735A is the inner peripheral wall portion 733A, and the side not connected to the tongue portion 735A is the outer peripheral wall portion 734A. In order to distinguish between the end portions 215a and 215b, for the sake of convenience, the end portion located on the rotation direction side is referred to as the "rotation side end portion", and the end portion located on the reverse rotation direction side is referred to as the "reverse rotation side end portion".

[0017] The first member 7A has a mounting portion 75A for mounting the heating unit 3 at the downstream end of the duct portion 213. As shown in FIG. 5, the mounting portion 75A has a notch portion 751A, a groove portion 752A, a through portion 753A, etc. The notch portion 751A and the groove portion 752A are adjacent in the front-rear direction and are provided on the outer peripheral wall portion 734A of the duct portion 732A. The through portion 753A is provided on the inner peripheral wall portion 733A of the duct portion 732A. The heating unit 3 is accommodated or held so as to be sandwiched from the rotation axis direction by the first member 7A and the second member 7B. For this reason, the notch portion 751A, the groove portion 752A, and the through portion 753A are open on the side of the second member 7B in the rotation axis direction. On the outer surface of the peripheral wall 73A of the first member 7A, there is a mounting portion 77A to which a substrate 53 on which a human sensor 5 is mounted as shown in FIG. 4 is attached. The substrate 53 is attached using screws, resin rivets, adhesives, engagement structures, etc. Here, screws are used, and the mounting portion 77A is constituted by screw holes formed in the boss portion 771A.

[0018] (1-2) Second member Mainly, it will be described with reference to FIGS. 5 and 6. The second member 7B has an end wall 71B and a peripheral wall 73B. Here, the end wall 71B is orthogonal to the rotation axis O of the blower fan 22, and the peripheral wall 73B is parallel to the rotation axis O. (1-2-1) End wall The end wall 71B has a case portion 711B that constitutes a part of the fan case portion 211 and a duct portion 712B that constitutes a part of the duct portion 213. The end wall 71B rotatably supports the rotation shaft portion 221 of the blower fan 22, and the drive motor 23 is attached to the outer side surface (right surface) in the rotation axis direction (here, the left-right direction). A plurality of intake ports 211a (for example, four) are formed at intervals in the circumferential direction around the rotation axis in the case portion 711B of the end wall 71B. The end wall 71B has a plurality of attachment portions 78B for attaching the power control unit 6 above the drive motor 23 on the outer side surface (right surface) in the rotation axis direction (here, the left-right direction). For attachment, screws, resin rivets, adhesives, engagement structures, etc. can be used. Here, as shown in FIG. 4(a), screws are used, and the attachment portion 78B is constituted by screw holes formed in the boss portion 781B.

[0019] (1-2-2) Peripheral wall As shown in FIG. 6, the peripheral wall 73B has a case portion 731B that constitutes a part of the fan case portion 211 and a duct portion 732B that constitutes a part of the duct portion 213. The duct portion 732B of the peripheral wall 73B has an inner peripheral wall portion 733B facing (connected to) the rotating side end portion 215a at the communication port 215 (see FIG. 7) and an outer peripheral wall portion 734B facing (connected to) the non-rotating side end portion 215b at the communication port 215. In other words, at the angle between the case portion 731B and the duct portion 732B connected via the communication port 215, the side larger than 90 degrees is the outer peripheral wall portion 734B, and the side smaller than 90 degrees is the inner peripheral wall portion 733B. That is, the side connected to the tongue portion 735B is the inner peripheral wall portion 733B, and the side not connected to the tongue portion 735B is the outer peripheral wall portion 734B. The second member 7B has an attachment portion 75B for attaching the heating unit 3 to the downstream end of the duct portion 213. As shown in FIG. 6, the attachment portion 75B has a notch portion 751B, a groove portion 752B, a through portion 753B, etc. The notch portion 751B and the groove portion 752A are adjacent to each other in the front-rear direction and are provided on the outer peripheral wall portion 734B of the duct portion 732B. The through portion 753B is provided on the inner peripheral wall portion 733B of the duct portion 732B. Note that the notch portion 751B, the groove portion 752B, and the through portion 753B are open on the side of the first member 7A in the rotation axis direction.

[0020] On the outer surface of the peripheral wall 73B of the second member 7B, as shown in FIG. 5, there is an attachment portion 77B to which a substrate 53 (see FIG. 4) on which a human sensor 5 is mounted is attached. Here, screws are used for attachment, and the attachment portion 77B is constituted by screw holes formed in the boss portion 771B. Note that the opposing ends of the peripheral wall 73A of the first member 7A and the peripheral wall 73B of the second member 7B overlap or fit together to enhance the sealing performance.

[0021] (2) Blower fan and drive motor For example, a sirocco fan is used as the blower fan 22. The rotation axis O of the blower fan 22 is parallel to the left-right direction. For example, an AC motor or a DC motor is used as the drive motor 23. The drive motor 23 is connected to the rotation shaft portion 221 of the blower fan 22. The blower fan 22 and the drive motor 23 are adjacent to each other in the left-right direction and are arranged on the lower side of the housing 1. Thereby, heavy objects are located on the lower side, and the stability can be improved.

[0022] 4. Heating unit As shown in FIG. 3, the heating unit 3 includes at least a heating section. The heating section is constituted by a heater 31. Here, the heating unit 3 is disposed in the duct section 213 of the blower unit 2. The heater 31 may be directly disposed in the duct section 213 of the blower unit 2, but in a state of being supported by a support member 32, the support member 32 is incorporated in the heating unit 3. That is, the heating unit 3 includes a heater 31 and a support (holding) member 32 that supports (holds) the heater 31. Here, the heating unit 3 includes a temperature sensor and a fuse that detect the temperature of the heater 31.

[0023] (1) Heater As the heater 31, for example, a PTC heater is used. The heater 31 has a large number of through holes in the front-rear direction, but in the figure, for the sake of convenience, it is shown in a plate shape. As shown in FIG. 3, the heater 31 is plate-shaped and is supported in a state where its main surface is orthogonal to the front-rear direction. That is, on the downstream side of the duct section 213, air flows forward, and air is discharged forward from the exhaust port 213a.

[0024] (2) Support member As shown in FIGS. 5 and 6, the support member 32 includes a downstream side member 34 located on the downstream side (here, the front side) in the direction in which air flows in the duct section 213 and an upstream side member 35 located on the upstream side (here, the rear side), and holds the heater 31 so as to sandwich it from the upstream side and the downstream side. When the front and rear are used in the description of the heating unit 3, the upstream side where air flows is the rear side, and the downstream side is the front side.

[0025] (2-1) Downstream side member The downstream side member 34 has a frame-shaped portion 341 facing the outer peripheral surface of the heater 31 and a support portion 342 that supports the heater 31. In a state where the heater 31 is incorporated, there is a gap between the heater 31 and the frame-shaped portion 341, suppressing the heat of the heater 31 from being transmitted to the downstream side member 34. Here, the downstream member 34 includes a cover portion 343 for preventing a user's finger or the like from contacting the heater 31, an attachment structure (attachment portion) 344 for attaching the upstream member 35, a contact portion 345 that abuts against the downstream end of the duct portion 213 of the blower unit 2, a sensor housing portion 346 that houses a temperature sensor (not shown) in the upper side portion of the frame-shaped portion 341, a positioning mechanism (positioning portion) 347 with the upstream member 35, and the like.

[0026] (2-1-1) Frame-shaped portion The frame-shaped portion 341 has a rectangular shape that is long in the vertical direction when viewed from the front-rear direction, and each side extends in a plate shape in the front-rear direction. In other words, the frame-shaped portion 341 has a rectangular tube shape. Note that the frame-shaped portion 341 houses the heater 31 inside. Since the heater 31 is arranged inside the frame-shaped portion 341, as shown in the enlarged view of FIG. 6, it has a through hole 341a for leading out the terminal 31a of the heater 31 to the outside. The through hole 341a is provided in the lower plate portion of the frame-shaped portion 341. Further, the frame-shaped portion 341 here has rib portions 341b that extend downward on both sides in the left-right direction with respect to the through hole 341a. Thereby, the terminal 31a is protected by the rib portions 341b. Note that the space between adjacent rib portions 341b and the space between the rib portion 341b and the positioning portion 347 can also be said to be insertion grooves through which the terminal 31a is inserted. (2-1-2) Support portion The support portion 342 protrudes in the thickness direction from the inner surface of the frame-shaped portion 341. The support portion 342 is constituted by ribs. The support portion 342 has at least a front support portion 342a that abuts against the front surface of the heater 31. The front support portion 342a is provided on the left and right plate portions of the frame-shaped portion 341. Thereby, the forward movement of the heater 31 is restricted. The rib-shaped front support portion 342a extends in the front-rear direction, and its front side has a stepped shape that protrudes more inward in the left-right direction, and at the portion where the protruding amount is small, it abuts against or is close to the left and right surfaces of the heater 31. Thereby, the left-right movement of the heater 31 is restricted. The support portion 342 may include at least one of a lower support portion 342b (see the enlarged view of FIG. 6) that abuts against the lower surface of the heater 31 and an upper support portion 342c that abuts against the upper surface of the heater 31. Here, it includes the lower support portion 342b and the upper support portion 342c. Thereby, the vertical movement of the heater 31 is restricted. Also, thereby, a gap can be provided between the frame-shaped portion 341 and the heater 31 with a simple structure. At the upper corner portion of the frame-shaped portion 341, the tips of the front support portion 342a and the upper support portion 342c are connected in an "L" shape. By this connection, the frame-shaped portion 341 can be reinforced.

[0027] (2-1-3) Cover portion The cover portion 343 is provided at the front side portion of the frame-shaped portion 341. The cover portion 343 is composed of a plurality of plate-like portions and a plurality of rod-like portions. Here, it is formed in a lattice shape by the upper and lower and left and right plate-like portions. When a protective cover is provided at the air outlet 11a of the housing 1, the cover portion 343 may not be provided. (2-1-4) Mounting structure (mounting portion) For attaching the upstream member 35 to the downstream member 34, screws, resin rivets, adhesives, engagement structures, etc. can be used. Here, an engagement structure is used, and the mounting portion 344 is composed of a downstream engagement portion for engaging with the upstream member 35. The mounting portion 344 is in a bridge shape that projects outward in the left-right direction from the outer surfaces of the left and right plate portions of the frame-shaped portion 341. The mounting portion 344 is provided above and below each of the left and right plate portions, and there are a total of four.

[0028] (2-1-5) Contact portion The contact portion 345 projects stepwise outward in the vertical and horizontal directions from the front end of the frame-shaped portion 341. When the heating unit 3 is attached to the blower unit 2, the frame-shaped portion 341 fits into the exhaust port 213a of the duct portion 213, and the contact portion 345 contacts the end surface of the duct portion 213. Thereby, the airtightness in the air supply passage can be improved. Also, the rattling in the front-rear direction between the blower unit 2 and the heating unit 3 can be reduced. The downstream member 34 has an attachment portion 345a for attaching the louver 8 at the contact portion 345. For attachment, screws, resin rivets, adhesion, engagement structures, etc. can be used. Here, screws are used, and the attachment portion 345a is constituted by through-holes for screws. (2-1-6) Sensor housing portion The sensor housing portion 346 is provided on the upper surface of the upper plate portion of the frame-shaped portion 341 and the extending portion 348 that extends from the upper plate portion of the frame-shaped portion 341 to one side in the left-right direction (here, the side where the power control unit 6 is located, which is the right side). As a result, the temperature sensor is positioned above the heater 31, and the temperature of the heater 31 or the temperature corresponding to the temperature can be detected. Also, it gets closer to the power control unit 6, and the wiring can be shortened. The sensor housing portion 346 is configured in a box shape with an open upper side, and its opening is covered by a lid member 36. Note that the extending portion 348 is on the side where the second member 7B of the air passage member 21 exists, and is supported by the bent flat portion 713Ba at the upper end of the end wall 71B of the second member 7B.

[0029] (2-1-7) Positioning portion The positioning portion 347 is positioned with the positioning portion 358 (see FIG. 5) of the upstream member 35. Here, the positioning portion 347 fits with the positioning portion 358 of the upstream member 35. In other words, the positioning portion 347 is a fitting portion that fits with the positioning portion (fitting portion) 358 of the upstream member 35 in the front-rear direction. The positioning portion 347 is provided so as to have the outer peripheral shape of the positioning portion 358 of the upstream member 35 as its inner peripheral shape. Here, the positioning portion 347 protrudes downward in a "U" shape from the lower plate portion of the frame-shaped portion 341. The positioning portion 347 is provided between the through-holes 341a adjacent in the left-right direction, and also has a function of protecting the terminal 31a of the heater 31 that passes through the through-hole 341a.

[0030] (2-2) Upstream member The upstream member 35 has a frame-shaped portion 351 that fits or abuts against the frame-shaped portion 341 of the downstream member 34, a rear support portion 353 provided on the frame-shaped portion 351 and supporting the heater 31 from the rear side, a wiring portion 355 for passing a wiring connected to the terminal 31a of the heater 31, an attachment structure (attachment portion 357) for attaching to the downstream member 34, a positioning mechanism (positioning portion) 358 with respect to the downstream member 34, and the like.

[0031] (2-2-1) Frame-shaped portion The frame-shaped portion 351 has a rectangular frame shape and is plate-shaped with each side extending in the front-rear direction. The end face of the frame-shaped portion 351 abuts against the end face (rear end face) of the frame-shaped portion 341 of the downstream member 34. Note that the upper plate portion of the frame-shaped portion 351 abuts against the lower surface of the upper plate portion of the downstream member 34. (2-2-2) Rear support portion The rear support portion 353 is constituted by ribs protruding in the thickness direction from the inner surface of the frame-shaped portion 351. Thereby, the backward movement of the heater 31 is restricted. Note that at the corner portions of the frame-shaped portion 351, the tips of the ribs are connected in an "L" shape. (2-2-3) Wiring portion The wiring portion 355 is provided in a box shape with an open front side. The wiring portion 355 has a through groove 355a for the terminal 31a of the heater 31 on its upper plate portion. Thereby, the terminal 31a of the heater 31 extends into the wiring portion 355, and a cable connected to the extended portion is led out from the front opening 355b. The wiring portion 355 is connected to the frame-shaped portion 351 by a rear plate portion 354 (see FIG. 6) and left and right side plate portions 356. The rear plate portion 354 has a stepped shape toward the front as shown in FIG. 9. The side plate portion 356 faces or abuts against the outer surfaces of rib portions 341b that extend downward from the frame-shaped portion 341 of the downstream member 34 and are located at both the left and right ends when the upstream member 35 is attached to the downstream member 34. Thereby, the terminal 31a of the heater 31 can be protected. (2-2-4) Attachment structure (attachment portion) As described above, the upstream member 35 is attached by using the engagement structure. The upstream member 35 has an upstream engagement portion 357 on the outer surface of the frame portion 351 for engaging with the downstream engagement portion 344 of the downstream member 34. The upstream engagement portion 357 here extends forward and engages with the front end surface by inserting through the bridge-shaped downstream engagement portion 344.

[0032] (2-2-5) Positioning mechanism (positioning portion) The positioning portion 358 is positioned with the positioning portion 347 of the downstream member 34. Here, the positioning portion 358 fits with the positioning portion 347 of the downstream member 34. In other words, the positioning portion 358 is a fitting portion that fits in the front-rear direction with the positioning portion (fitting portion) of the downstream member 34. The positioning portion 358 here projects downward in a "U" shape from the lower plate portion of the frame portion 351 and extends in the front-rear direction. Thereby, the downstream member 34 and the upstream member 35 are positioned. Note that the positioning portions 347 and 358 are provided so as to be located between the terminals 31a of the heater 31, and the downstream member 34 and the upstream member 35 can be positioned without causing an increase in the size of the support member 32.

[0033] 5. Louver As shown in FIG. 4, the louver 8 is assembled integrally with the blower unit 2 and the heating unit 3. As shown in FIG. 8, the louver 8 includes a plurality of (here, seven) wind direction plates 81 and a connecting plate 83 that rotatably connects the plurality of wind direction plates 81. The wind direction plate 81 is rotatably supported by a frame 85. That is, the louver 8 includes a plurality of wind direction plates 81 provided rotatably around a rotation axis orthogonal to the front-rear direction (which is also the first direction), and a connecting plate 83 that connects the plurality of wind direction plates 81 at intervals in the vertical direction orthogonal to the front-rear direction and the rotation axis and is supported movably in the vertical direction. When the connecting plate 83 moves in the vertical direction, the wind direction plates 81 rotate.

[0034] (1) Wind direction plate The wind direction plate 81 includes a plate portion 811, a protruding portion 813 that protrudes outward in the longitudinal direction, and a rotation shaft portion 815 that extends outward in the longitudinal direction. The plate portion 811 has a rectangular shape that is long in the left - right direction or a shape similar to a rectangle. Here, in the rear long - side portion, it has a notch portion 811a that is recessed forward in the intermediate region excluding both ends. The protruding portion 813 is provided at the intermediate portion of each short - side portion of the plate portion 811. The protruding portion 813 has a small - diameter portion 813a on the base side, a large - diameter portion 813b on the tip side, and a groove portion 813c that extends in the protruding direction. Due to the groove portion 813c, the protruding portion 813 can be elastically deformed so that its diameter becomes smaller. Note that the protruding portion 813 fits into the through - hole 833 of the connecting plate 83. The rotation shaft portion 815 is provided at the rear - end portion of each short - side portion of the plate portion 811. The rotation shaft portion 815 fits into the notch portion 854 of the frame 85.

[0035] (2) Connecting plate A pair of connecting plates 83 are provided in the longitudinal direction of the wind - direction plate 81. The connecting plate 83 has a plate portion 831 that is long in the up - down direction, a plurality of through - holes 833 formed at intervals in the plate portion 831, a convex portion 835 formed in the plate portion 831 and protruding in the thickness direction, and a groove portion 837 that enables the convex portion 835 to be elastically deformed in the thickness direction. Note that the convex portion 835 and the groove portion 837 are provided as a set and are provided vertically at intervals. The through - hole 833 has a small - diameter portion 833a located on the other - plate - portion 831 side in the through - direction and a large - diameter portion 833b located on the side opposite to the other - plate - portion 831. The small - diameter portion 813a of the protruding portion 813 of the wind - direction plate 81 fits rotatably into the small - diameter portion 833a, and the large - diameter portion 813b of the protruding portion 813 fits rotatably into the large - diameter portion 833b. The convex portion 835 is provided inside the groove portion 837 formed in a "U" shape when the plate portion 831 is viewed from the thickness direction. Thereby, the elastic deformation of the convex portion 835 becomes possible. The convex portion 835 fits between a plurality of ridge portions 851a of the side - plate portion 851 of the frame 85, and the up - down movement of the connecting plate 83 is restricted.

[0036] (3) Frame The frame 85 has a rectangular shape including a pair of side plate portions 851 arranged on both left and right sides in the lateral direction in which the rotation shaft portion 815 of the wind vane 81 extends, and an upper plate portion 852 and a lower plate portion 853 that connect both ends of the pair of side plate portions 851. Note that the main surfaces of the side plate portion 851, the upper plate portion 852, and the lower plate portion 853 are parallel to the front-rear direction. The frame 85 has groove portions or ridge portions (here, ridge portions) 851a for restricting the vertical movement of the pair of connecting plates 83, and notch portions or through holes (here, notch portions) 854 for rotatably supporting the wind vane 81 around the rotation axis of the rotation shaft portion 815. The ridge portions 851a extend in the front-rear direction and are provided in a plurality at intervals in the vertical direction. The notch portion 854 has a shape in which the columnar rotation shaft portion 815 can rotate and has at least an arcuate portion. Note that since the frame 85 is attached to the blower unit 2 in a state of abutting against the peripheral edge of the abutting portion 345 of the downstream member 34, the wind vane 81 does not come off from the notch portion 854. Note that the frame 85 has a mounting portion 855 for mounting to the blower unit 2. For mounting, screws, resin rivets, adhesives, and engagement structures can be used. Here, screws are used, and the mounting portion 855 is constituted by screw holes provided in the boss portion 856. (4) With the above configuration, the plurality of wind vanes 81 are rotatably supported by the frame 85 with their rotation shaft portions 815, and the protruding portions 813 of the plurality of wind vanes 81 are rotatably fitted into the through holes 833 of the connecting plate 83. Thereby, the plurality of wind vanes 81 rotate simultaneously around the rotation shaft portion 815, and the connecting plate 83 moves up and down.

[0037] 6. Assembly This will be mainly described with reference to FIG. 7. (1) Insertion of the heating unit into the first member As shown in Fig. 7(a), the convex portion 351b on the upper plate portion of the frame portion 351 of the holding member (upstream member 35) 32 of the heating unit 3 is inserted into the groove portion 752A of the mounting portion 75A of the first member 7A of the blower unit 2, and the wiring portion 355 of the holding member (upstream member 35) 32 of the heating unit 3 is inserted into the through portion 753A of the mounting portion 75A of the first member 7A of the blower unit 2, respectively, from the right side (the second member 7B side) in the left - right direction. By this insertion, the following state is achieved.

[0038] The upper plate portion 341d of the frame portion 341 of the holding member (downstream member 34) 32 of the heating unit 3 fits into the notch portion 751A of the mounting portion 75A of the blower unit 2. The left plate portion 341e of the frame portion 341 of the heating unit 3 abuts or is close to the left - end wall portion 754A of the mounting portion 75A in the duct portion 712A of the blower unit 2. At this time, the downstream engaging portion 344 and the rib portion 341f fit into the groove portion 754Aa and the concave portion 754Ab of the left - end wall portion 754A. The stepped portion 354a of the rear plate portion 354 of the heating unit 3 abuts against the stepped portion 755A of the mounting portion 75A of the first member 7A of the blower unit 2, and the overhanging portion 351c that projects outward in the left - right direction from the rear end of the frame portion 351 of the upstream member 35 fits into the groove portion 756A that extends above the mounting portion 75A of the first member 7A. Both left - and right - hand side portions 351d in the left - right direction of the rear plate portion 354 in the frame portion 351 of the heating unit 3 abut against (are supported by) the left - hand side portion 757A of the through portion 753A in the mounting portion 75A of the blower unit 2. The left - and right - hand rear end faces 345b of the contact portion 345 of the heating unit 3 abut against the end face 712Ab of the duct portion 712A of the first member 7A. The lower end face 345c of the contact portion 345 abuts against the lower face 758A of the duct portion 712A. In this way, when the heating unit 3 is inserted into the mounting portion 75A of the first member 7A of the blower unit 2, support and positioning are simultaneously performed while maintaining high sealing performance.

[0039] (2) Attachment of the second member As shown in Fig. 7(b), the convex portion 351b of the upper plate portion of the frame portion 351 of the holding member (upstream member 35) 32 of the heating unit 3 is fitted into the groove portion 752B of the mounting portion 75B of the second member 7B of the blower unit 2, and the wiring portion 355 of the holding member (upstream member 35) 32 of the heating unit 3 is fitted into the through portion 753B of the mounting portion 75B of the second member 7B of the blower unit 2, respectively. By this fitting, the following state is achieved.

[0040] The upper plate portion 341d of the frame portion 341 of the holding member (downstream member 34) 32 of the heating unit 3 is fitted into the notch portion 751B of the mounting portion 75B of the blower unit 2. The right plate portion 341g of the frame portion 341 of the heating unit 3 abuts or is close to the right end wall portion 754B of the mounting portion 75B in the duct portion 712B of the blower unit 2. At this time, the downstream engaging portion 344 and the rib portion 341f are fitted into the groove portion 754Ba and the concave portion 754Bb of the right end wall portion 754B. The stepped portion 354a of the rear plate portion 354 of the heating unit 3 abuts against the stepped portion 755B of the mounting portion 75B of the second member 7B of the blower unit 2, and the overhanging portion 351c of the frame portion 351 of the upstream member 35 is fitted into the groove portion 756B extending upward of the mounting portion 75B of the second member 7B. Both left and right side portions 351d in the lateral direction of the rear plate portion 354 in the frame portion 351 of the heating unit 3 abut against (are supported by) the right side portion 757B of the through portion 753B in the mounting portion 75B of the blower unit 2. The left and right rear end faces 345b of the contact portion 345 of the heating unit 3 abut against the end face 712Bb of the duct portion 712B of the second member 7B. The lower end face 345c of the contact portion 345 abuts against the lower face 758B of the duct portion 712B. The extending portion 348 on the upper side of the heating unit 3 abuts against (is supported by) the bent flat portion 713Ba of the second member 7B. In this way, by inserting the heating unit 3 into the mounting portion 75B of the second member 7B of the blower unit 2, high sealing performance is maintained while support and positioning are simultaneously performed.

[0041] (3) Connection With the heating unit 3 sandwiched between the first member 7A and the second member 7B from the left and right directions, the first member 7A and the second member 7B are coupled by screws 29 (see (a) of FIG. 4). Thereby, the blower unit 2 and the heating unit 3 can be assembled. In addition, since the louver 8 is attached to the heating unit 3, the functional part of the heating device X can be unitized. Note that the functionally unitized part is supported by the housing 1 and can be easily assembled.

[0042] 7. Air duct The air duct member 21 of the blower unit 2 is configured with inner peripheral wall portions 733A and 733B so as to prevent the air sent out from the blower fan 22 from being deflected. By reducing the deflection of the air, for example, the air can be evenly supplied to the heater 31, and warm air with little temperature unevenness can be blown out from the air outlet 11a. Hereinafter, it will be described with reference to FIG. 9.

[0043] The duct portion 213 is composed of the first member 7A and the second member 7B. When explaining the duct portion 213, it will be described as if the first member 7A and the second member 7B are integrated, and no "A" or "B" is attached to the reference numerals. For example, the inner peripheral wall portion of the duct portion 213 is composed of the inner peripheral wall portion 733A of the first member 7A and the inner peripheral wall portion 733B of the second member 7B, and the tongue portions are respectively composed of the tongue portion 735A of the first member 7A and the tongue portion 735B of the second member 7B, but it will be simply described as the inner peripheral wall portion 733 and the tongue portion 735, and no "A" or "B" is attached in FIG. 9 either. Also, the rotating side end 215a of the communication port 215 is also the upstream end of the inner peripheral wall portion 733 and the tip of the tongue portion 735. Note that the reference numerals of the ends of the communication port 215 are also 215a and 215b. The inner peripheral wall portion 733 is configured such that, in a cross-section orthogonal to the rotation axis O of the blower fan 22, the airflow passing through the vicinity of the tongue portion 735 or the upstream end portions in the tongue portion 735 and the inner peripheral wall portion 733 flows along the inner surface of the inner peripheral wall portion 733. At this time, the duct portion 213 is configured to flow along the inner peripheral wall portion 733 without including a guide portion for guiding the flow of air from the blower fan 22. Note that the air flows along the inner peripheral wall portion 733 without a guide portion by utilizing the Coandă effect.

[0044] Here, air is exhausted forward (in the first direction) from the exhaust port 213a of the duct portion 213. The duct portion 213 curves so as to go forward after going upward from the communication port 215. The inner peripheral wall portion 733 has a flat portion 733a extending from the rotating side end 215a of the communication port 215 toward the exhaust port 213a. For the sake of convenience, the flat portion 733a is referred to as the first flat portion 733a in order to distinguish it from the (second) flat portion 733b described later. The first flat portion 733a is configured to be substantially linear in a cross-section orthogonal to the rotation axis O. The angle A between the tangent line that contacts the outer periphery of the blower fan 22 and passes through the rotating side end 215a and the first flat portion 733a is smaller than the angle B between the first flat portion 733a and the upward direction (the virtual line L2 extending upward). Note that the angle B between the upward direction and the first flat portion 733a is set to 40 to 50 degrees. Thereby, the airflow in the vicinity of the inner peripheral wall portion 733 can be effectively attracted. The length D2 of the first flat portion 733a is set to 40 to 60 mm in a cross-section orthogonal to the rotation axis O. This length is 40 to 60% of the length of the communication port 215. Thereby, air flows smoothly along the inner peripheral wall portion 733 and flows toward the exhaust port 213a.

[0045] The end portion of the inner peripheral wall portion 733 on the side of the communication port 215, that is, the upstream end portion of the first flat portion 733a, is located in the front-rear direction on the front side of the rear end of the outer periphery of the blower fan 22. The distance D1 between the upstream end of the first flat portion 733a (the tip of the tongue portion 735) and the virtual line L3 passing through the rotation axis O and parallel to the upward direction is 60 to 75% of the radius r of the outer periphery of the blower fan 22 in a cross section orthogonal to the rotation axis O. Thereby, the communication port 215 of the air supply passage can be narrowed, a velocity width from the air flow velocity before passing through the communication port 215 to the air flow velocity after passing through the communication port 215 can be ensured, the air flow can easily flow along the inner peripheral wall portion 733 after passing through the communication port 215, and the advancing direction of the air flow can be changed. The tip end portion side of the tongue portion 735 and the upstream end portion side of the inner peripheral wall portion 733 are rounded, and the radius of curvature is set within the range of 2 to 5 mm. Thereby, the air flow can be attracted from the tongue portion 735 to the upstream side of the inner peripheral wall portion 733, and the advancing direction of the air flow can be changed toward the exhaust port 213a. Further, air can smoothly flow in the vicinity of the tip of the tongue portion 735, that is, the rotating side end portion 215a of the communication port 215.

[0046] The inner peripheral wall portion 733 has a first flat portion 733a and a second flat portion 733b extending forward from the downstream end portion of the first flat portion 733a. The second flat portion 733b here is constituted by the lower plate portions 351a and 341c of the frame-shaped portions 351 and 341 of the upstream side member 35 and the downstream side member 34 of the heating unit 3. The second flat portion 733b may extend parallel to the forward direction or may be inclined with respect to the forward direction within the range of -10 to 10 degrees. Further, the angle C between the first flat portion 733a and the second flat portion 733b is set within the range of 120 to 150 degrees. Thereby, the advancing direction of the air flow can be changed toward the exhaust port 213a side without separating the air flow flowing along the inner peripheral wall portion 733 from the inner peripheral wall portion 733.

[0047] The outer peripheral wall portion 734 has, in a cross-section orthogonal to the rotation axis O, a first outer peripheral wall portion 734a extending upward from the anti-rotation side end portion 215b of the communication port 215, a second outer peripheral wall portion 734b extending upward from the upper end of the first outer peripheral wall portion 734a, a third outer peripheral wall portion 734c curving forward from the upper end of the second outer peripheral wall portion 734b, and a fourth outer peripheral wall portion 734d extending forward from the front end of the third outer peripheral wall portion 734c. The first outer peripheral wall portion 734a is inclined toward the inner peripheral wall portion 733 within a range of 0 to 3 degrees with respect to the vertical direction. The boundary portion 734e between the first outer peripheral wall portion 734a and the second outer peripheral wall portion 734b is located above the end portion of the inner peripheral wall portion 733, that is, above the rotation side end portion 215a of the communication port 215. Note that the inclination angle of the first outer peripheral wall portion 734a and the second outer peripheral wall portion 734b with respect to the vertical direction is smaller than the angle of the inner peripheral wall portion 733 (the first flat portion 733a) with respect to the vertical direction (which is the angle "B" in FIG. 9). Further, at least one of the first outer peripheral wall portion 734a and the second outer peripheral wall portion 734b constitutes an inclined portion that approaches the exhaust port 213a as it moves away from the anti-rotation side end portion 215b of the communication port 215 in the vertical direction. The second outer peripheral wall portion 734b is inclined at an angle larger than the inclination angle of the first outer peripheral wall portion 734a with respect to the vertical direction. Here, it is inclined within a range of 8 to 15 degrees. The boundary portion 734f between the third outer peripheral wall portion 734c and the fourth outer peripheral wall portion 734d is located at substantially the same position as the end portion of the inner peripheral wall portion 733 on the communication port 215 side, or in front of the end portion. Thereby, air smoothly flows along the outer peripheral wall portion 734.

[0048] The embodiments have been described above, but the present invention is not limited to these embodiments. For example, the following modification examples may be applicable. Also, combinations of an embodiment, modification examples, and modification examples may be possible. In addition, examples not described in the embodiments or modification examples, as well as design changes within the scope not departing from the gist, are also included in the present invention.

[0049] <Modification Example> 1. Air Supply Passage (1) The air supply unit 2 includes at least an air duct member 21 and an air supply fan 22, and a heating unit 3 (heater 31) is disposed inside thereof. For this reason, the downstream end portion of the air supply passage was constituted by the air duct member 21 and the support member 32 of the heating unit 3. However, when the heater 31 is outside the air supply passage and disposed on the downstream side of the exhaust port, the air duct member may constitute the air supply passage, or it may be constituted by the air duct member 21 in the embodiment and a member other than the air duct member 21. For example, when it is constituted only by the air duct member, the outer peripheral wall portions 734A and 734B of the first member 7A and the second member 7B can be made flat and extend in the front-rear direction by eliminating the missing portions 751A and 751B and the through portions 753A and 753B. Also, for example, when using other members, a member having no heater holding function (for example, support portions 342 and 353) in the support member 32 described in the embodiment may be used, or the downstream member 34 of the support member 32 may be used. When using the downstream member 34, it can be implemented by not having the front support portion 342 and bringing the upstream end of the frame-shaped portion 341 into contact with or close to the first flat portion 733a.

[0050] (2) The downstream end of the air supply passage corresponded to the downstream end of the second flat portion (which is "733b" in FIG. 9) of the duct portion 213. However, for example, it may correspond to the downstream end of the first flat portion 733a. That is, the duct portion only needs to have at least the first flat portion 733a, and may or may not have the second flat portion 733b. When not having the second flat portion 733b, in the embodiment shown in FIG. 9, the heater 31 is located outside the air supply passage and on the downstream side of the exhaust port.

[0051] (3) The first member 7A and the second member 7B constituting the air duct member 21 were configured such that the first member 7A was larger than the second member 7B in the rotation axis direction. However, they may be of the same size, or the second member may be larger. Also, a third member or a fourth member may be provided between the first member 7A and the second member 7B. (4) Although the virtual plane including the exhaust port 213a of the air supply unit 2 is orthogonal to the front-rear direction, the exhaust from the exhaust port 213a may be directed forward (the first direction). The virtual plane including the exhaust port may be inclined with respect to the front-rear direction (the first direction), the peripheral edge of the exhaust port may not be included in one virtual plane, or it may have a missing portion with a part missing. Note that the member constituting the peripheral edge of the exhaust port may be one or a plurality. (5) When the opening of the louver 8 (the gap between the wind direction plates) is used as the exhaust port, the air supply passage may be constituted by the air passage member 21, the support member 32 that supports the heater 31, and the frame 85 of the louver 8. (6) Although the front-rear direction, which is an example of the first direction, and the up-down direction, which is an example of the second direction, are in an orthogonal relationship, it is sufficient that the first direction and the second direction are in an intersecting relationship. Specifically, the angle between the first direction and the second direction may be within the range of 70 to 110 degrees. The first direction may be, as an example, the front-rear direction, the up-down direction (upward), the left-right direction, or a direction intersecting the front-rear direction, the up-down direction, or the left-right direction. (7) Although the air supply fan 22 is provided with the rotation axis O parallel to the left-right direction, the rotation axis O may be provided in the front-rear direction or the up-down direction, or may be provided in a state inclined with respect to the left-right direction, the front-rear direction, and the up-down direction. The air supply fan 22 is located on the lower side, but may be provided on the front side, the rear side, or the upper side.

[0052] 2. Heating Unit The heating unit 3 may include at least the heater 31, and may be attached to the air supply unit 2 or the louver 8 without being held by the support member 32. Note that the support member 32 may constitute the air supply unit. The cover portion 343 of the support member 32 may be attached to the frame 85 of the louver 8.

[0053] 3. Louver In the louver 8, the rotation axis orthogonal to the front-rear direction (first direction) was parallel to the left-right direction, but the rotation axis may be orthogonal to the front-rear direction and the vertical direction. That is, the rotation axis only needs to be present within a virtual plane orthogonal to the first direction. The plurality of wind direction plates 81 perform the same rotation operation by the connecting plate 83. For example, a plurality of air supply plates on one half (e.g., the upper half) in the connecting direction perform the same rotation operation, and a plurality of air supply plates on the other half (e.g., the lower half) in the connecting direction may be connected so as to perform the same rotation operation independently of the upper half air supply plates.

[0054] <Others> The blower and the heating device described in the embodiment include the following inventions. 1. Assembly 1 In a blower device including a blower unit 2 and a heating unit 3, there is a problem that the assembly of the blower unit 2 and the heating unit 3 is troublesome. The blower device of the embodiment includes a blower unit having a blower fan and an air passage member, and a heating unit having a heater and a holding member. The air passage member includes a first member and a second member coupled in the rotational axis direction of the blower fan. At least one of the first member and the second member has a groove portion (752A, 752B) extending in the rotational axis direction. The holding member has a convex portion (351b) that fits (is inserted) into the groove portion from the rotational axis direction. The first member and the second member are coupled in the rotational axis direction with the convex portion of the heating unit fitted into the groove portion. Thereby, the heating unit can be incorporated into the blower unit without using fixtures such as screws and rivets. In this case, the structure of the air passage is not particularly limited.

[0055] 2. Assembly 2 In a blower device including a blower unit 2, a heating unit 3, and a louver 8 in a housing 1, there is a problem that the incorporation of the blower unit 2, the heating unit 3, and the louver 8 into the housing 1 is troublesome. The blower device according to the embodiment includes a blower unit having a blower fan, a heating unit having a heater, and a louver for adjusting the wind direction, and the blower unit, the heating unit, and the louver are configured to be assembled as one unit, and the assembled one unit is incorporated into the housing. Thereby, it can be incorporated more easily than the case where the blower unit, the heating unit, and the louver are incorporated into the housing separately. In this case, the structure of the air passage is not particularly limited.

[0056] 3. Alignment In a blower device including a blower unit 2, a heating unit 3, and a louver 8 in a housing 1, there is a problem that alignment during incorporation of the blower unit 2, the heating unit 3, and the louver 8 into the housing 1 is troublesome. The blower device according to the embodiment includes a blower unit having a blower fan, a heating unit having a heater, and a louver for adjusting the wind direction, and the blower unit, the heating unit, and the louver are configured to be assembled as one unit in an aligned state, and the assembled one unit is incorporated into the housing. Thereby, by aligning the blower unit, the heating unit, and the louver and unitizing them, the positional relationship among the blower unit, the heating unit, and the louver is maintained even when incorporated into the housing. In this case, the structure of the air passage is not particularly limited.

[0057] 4. Weight balance In a blower device including a blower unit 2 and a heating unit 3, there is a desire to install the device in a stable state. The air blower of the embodiment includes an air blowing unit having a blower fan, an air duct member, and a drive motor, and a heating unit having a heater and a holding member, and is a device that blows warm air from an air outlet in a first direction. The air blowing unit includes the blower fan and the drive motor adjacent to each other on the lower side in a direction intersecting the first direction and the vertical direction. The air duct member has an air blowing passage that passes through the side opposite to the air outlet with respect to the blower fan. The heating unit has a heater on the air outlet side with respect to a virtual plane that passes through the rotation axis of the blower fan and extends upward. As a result, the heavy part is located on the lower side, the heater is located on the air outlet side in the first direction with respect to the virtual plane, and the air duct member having an air blowing passage is located on the side opposite to the air outlet in the first direction, so that the device can be stably installed. In this case, the structure of the air blowing passage is not particularly limited.

[0058] 5. Human presence sensor In a warm air device including a human presence sensor and a heater, there is a desire to reduce the influence of heat received by the human presence sensor from the heater. The warm air device of the embodiment includes a human presence sensor and a heater, and the human presence sensor is disposed below the heater. As a result, the human presence sensor and the substrate on which the sensor is mounted are less likely to be affected by the heat of the heater, and the service life can be extended. In the warm air device of the embodiment, a human presence sensor and a heater are provided, and the housing has an air outlet for blowing out warm air. A flow path member (an example is the support member 32 and the frame 85) for guiding the warm air heated by the heater to the air outlet is provided, and the human presence sensor is provided at a position away from the flow path member. As a result, the detection range of the human presence sensor can be widened, and it is difficult to touch the warm air blown out from the air outlet.

Description of reference numerals

[0059] 1 Housing 2 Air blowing unit 3 Heating unit 21 Air duct member 22 Blower fan 31 Heater 32 Holding member

Claims

1. A blower device comprising: an air duct member forming a blower passage having an exhaust port; a blower fan disposed in the blower passage; and a housing accommodating the air duct member and the blower fan, the blower device blowing air from the blower fan in a first direction from the exhaust port, a blowout port facing the exhaust port is provided on the front side of the upper part of the housing, the blower fan is provided on the lower side of the housing, the air duct member has a scroll-shaped fan case portion accommodating the blower fan, and a duct portion provided on the downstream side of the fan case portion and connecting a communication port with the fan case portion and the exhaust port, the duct portion curves so as to face the first direction which is the forward direction after facing the second direction which is upward from the communication port, the angle between the first direction and the second direction is within a range of 70 to 110 degrees, the peripheral wall portion connecting to the tongue portion in the duct portion has a first flat portion extending from the tip of the tongue portion toward the exhaust port, the angle between a tangent line contacting the outer periphery of the blower fan and passing through the tip of the tongue portion and the first flat portion is smaller than the angle between the first flat portion and the second direction, the air duct member has a second flat portion extending in the first direction from the downstream end portion in the first flat portion, A blower device.

2. The angle between the first flat portion and the second flat portion is 120 to 150 degrees, The blower device according to Claim 1.

3. In a cross section orthogonal to the rotation axis of the blower fan, the distance between the tip of the tongue portion and an imaginary line passing through the rotation axis and parallel to the second direction is 60 to 75% of the radius of the blower fan, The blower device according to Claim 1 or 2.

4. The peripheral wall portion in the duct portion not connected to the tongue portion has an inclined portion approaching the exhaust port as it moves away from the exhaust port in the second direction from the end portion on the side opposite to the tongue portion in the communication port in a cross section orthogonal to the rotation axis of the blower fan, The blower device according to any one of Claims 1 to 3.

5. A heating portion is provided on the upstream side or the downstream side of the exhaust port of the duct portion, The blower device according to any one of Claims 1 to 4.

6. The housing includes a louver provided at the blowout port, The louver includes a plurality of wind direction plates rotatably provided around a rotation axis orthogonal to the first direction, and a connecting plate that connects the plurality of wind direction plates at intervals in a direction orthogonal to the first direction and the rotation axis and is supported so as to be movable in the orthogonal direction. When the connecting plate moves in the orthogonal direction, the plurality of wind direction plates rotate. The air blower according to any one of claims 1 to 5.

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