Drying device

Abstract

Provided is a drying device capable of making the position or orientation of a discharge part disposed between a mattress and a comforter less susceptible to being affected by movement of the mattress or the comforter.　A dryer according to the present invention comprises a body part (1) that generates warm air, and a discharge part that is inserted between a mattress and a comforter and discharges the warm air generated by the body part (1). The discharge part has a nozzle (51) having a discharge port, and a hose (57) connected to the body part (1). The nozzle (51) has a bottom surface part (527) facing the mattress. The hose (57) is connected to one side of the nozzle (51) in a first direction, and the discharge port is provided at the other end on the other side in the first direction. The dimension (L1) of the bottom surface part (527) in a (second) direction orthogonal to the first direction when the nozzle (51) is viewed from above is 1.5 to 2.9 times the diameter (D1) of the hose (57).

Description

drying equipment

[0001] The present invention relates to a drying device that discharges heated air.

[0002] As a drying device, a nozzle body including a nozzle unit having an air outlet for blowing out air and a movable unit that is provided so that the position or posture of the nozzle unit can be changed relative to the nozzle unit has been disclosed (for example, Patent Document 1).

[0003] JP 2018-42885 A

[0004] In the drying device of the above technology, for example, the nozzle body is inserted between the mattress and the comforter when used. In this state, for example, when adjusting the position of the comforter, the nozzle body is moved by the movement of the comforter, which causes a problem that the position and orientation of the nozzle body are easily changed. The object of the present invention is to provide a drying device that can make the position or orientation of the discharge part arranged between the mattress and the comforter less affected by the movement of the comforter.

[0005] The drying device of the present invention comprises a main body portion that generates warm air, and a discharge portion that is inserted between a mattress and a comforter and discharges the warm air generated by the main body portion, the discharge portion having a nozzle with a discharge outlet and a hose connected to the main body portion, the nozzle having a bottom portion facing the mattress, the hose being connected to one side in a first direction and having the discharge outlet at its other end on the other side in the first direction, the dimension of the bottom portion in a direction perpendicular to the first direction when the nozzle is viewed from above being 1.5 to 2.9 times the diameter of the hose. The drying device of the present invention comprises a main body portion that generates warm air, and a discharge portion that is inserted between a mattress and a comforter and discharges the warm air generated by the main body portion, the discharge portion having a nozzle with a discharge outlet and a hose connected to the main body portion, the nozzle having a bottom portion facing the mattress, the hose being connected to one side in a first direction and having the discharge outlet at the other end on the other side in the first direction, the bottom portion of the nozzle being detachable from the back portion of the main body portion, and when the nozzle is attached to the back portion, the bottom portion covers more than 80% of the back portion.

[0006] According to the above configuration, the position or orientation of the discharge portion arranged between the mattress and the comforter can be made less susceptible to the influence of movement of the comforter.

[0007] 1 is a perspective view of the drying device of the embodiment with a nozzle attached to the main body, as viewed from above. FIG. 2 is a perspective view of the drying device of the embodiment with a nozzle separated from the main body, as viewed from above. FIG. 3 is a cross-sectional perspective view of the nozzle attached to the main body. FIG. 4 is a perspective view of the main body disassembled with the housing main body facing downward, as viewed from above. FIG. 5 is a perspective view of the main body disassembled with the housing main body facing downward, as viewed from below. FIG. 6 is a perspective view of the housing main body with a hot air supply unit removed, showing the left wall side of the housing main body with a portion missing. FIG. 7 is a perspective view of the housing main body with a portion missing, as viewed from below. FIG. 8 is a cross-sectional perspective view of the hot air supply unit with one-half missing. FIG. 9 is a cross-sectional view of the hot air supply unit with one-quarter of the casing and one-half of the connector missing. FIG. 10 is a perspective view of the casing in a disassembled state, as viewed from above. FIG. 11 is a cross-sectional view of the hot air supply unit. FIG. 12 is a diagram of the area around the temperature sensor. FIG. 13 is a perspective view of the discharge unit as viewed from below. FIG. 14 is a cross-sectional view of the discharge unit as viewed from the side. FIG. 15 is a cross-sectional view of the discharge unit in a disassembled state, as viewed from below. FIG. 1 is a perspective view of the discharge unit in a disassembled state, as seen from above. FIG. 2 is a side view of the discharge unit with the support member in a closed state. FIG. 3 is a side view of the discharge unit with the support member in an open state. FIG. 4 is an enlarged view of the nozzle engagement portion as seen from the sliding direction (first direction). FIG. 5 is an enlarged view of the nozzle engagement portion as seen from the rear side. FIG. 6 is a view showing how the nozzle is attached to the main body unit. FIG. 7 is a view showing the rear, nozzle, and bottom surface of the main body unit. FIG. 8 is a view of the main body unit with the nozzle attached, as seen from the nozzle side.

[0008] <Embodiment>

[0009] 1. Overview The schematic structure of a drying device X according to an embodiment will be described with reference to FIGS. 1 and 2. For example, when both FIGS. 1A and 1B are included, as in FIG. 1, the term "FIG. 1" will be used to refer to both FIGS. 1A and 1B. The same applies to other figures. The drying device X includes a main body 1 that generates hot air and an outlet 5 that discharges the hot air generated by the main body 1 from an outlet port 511. The main body 1 includes a hot air supply unit 20 that supplies hot air, a circuit unit 30, and an operation unit 40 housed in a housing 10. The outlet 5 includes a nozzle 51 and a hose 57 that can be bent (flexed) and extended / retracted, and is connected to the main body 1 via the hose 57. The nozzle 51 of the outlet 5 is attached (mounted) to the main body 1 by bending the hose 57 into a "U" shape, as shown in FIG. 1A. When in use, the nozzle 51 is detached from the main body 1, as shown in FIG. 1B. The state in which the nozzle 51 is attached to the main body 1 is referred to as an attached state, and the state in which the nozzle 51 is detached from the main body 1 is referred to as a detached state. The drying device X dries items to be dried, such as bedding such as futons, shoes, and laundry. For example, when drying a mattress and a comforter, the nozzle 51 is inserted between the mattress and the comforter. In this case, by spreading the support member 53 of the nozzle 51 (see FIG. 1B ), the hot air discharged from the nozzle 51 can be supplied over a wide area.

[0010] Here, the direction connecting the portion of the nozzle 51 to which the hose 57 is connected and the discharge port 511 is defined as the first direction, the direction in which the nozzle 51 and the main body 1 (housing 10) face (adjacent) in the attached state of FIG. 1A is defined as the third direction, and the direction perpendicular to the first and third directions is defined as the second direction. In the main body 1, the surface and side to which the nozzle 51 is attached are defined as the back (or rear surface) and rear side, and the surface and side facing the back in the third direction are defined as the front and front side. When viewed from the front side, the surface and side located on the right side are defined as the right surface and right side, and the surface and side facing the right surface in the second direction are defined as the left surface and left side, and the surface and side on which the hose 57 is located in the attached state are defined as the top surface and upper side, and the surface and side facing the top surface in the first direction are defined as the bottom surface and lower side. In the nozzle 51, the surface and side attached to the main body 1 are the bottom surface (or lower surface) and bottom side (or lower side), the surface and side facing the bottom surface in the third direction are the top surface and upper side, the surface and side on which the discharge port 511 is located are the front surface and front side, the surface and side on which the hose 57 is located are the rear surface and rear side, the surface and side located on the right side when viewed from the discharge port 511 are the right surface and right side, and the surface and side facing the right surface in the second direction are the left surface and left side. Each part will be described below.

[0011] 2. Main Body 1 has the nozzle 51 detachably attached to the rear side, i.e., outside the housing 10, as shown in Figures 1 and 2. In other words, the nozzle 51 is attached in an exposed state. This eliminates the need for a space inside the housing 10 to accommodate a portion of the discharge unit 5 (e.g., the nozzle 51), allowing the housing (device) to be made more compact. Furthermore, because the longitudinal direction of the hot air supply unit 20 (described below) is parallel or approximately parallel to the first direction, the dimensions in the second and third directions can be reduced, resulting in a slimmer device.

[0012] (1) Housing: This description will be primarily made with reference to Figures 2 to 5. The housing 10 houses the hot air supply unit 20, the circuit unit 30, and the board 43, with the operation unit 40's operation means 41 and display means 42 exposed to the exterior of the housing 10. The housing 10 is box-shaped. Here, the box shape is elongated in a first direction. Note that the cross-sectional shape perpendicular to the first direction is rectangular or nearly rectangular. The housing 10 is composed of multiple components. Here, the housing 10 is composed of two components: a housing main body 101 having an opening on the front side, and a lid 102 that covers the opening. Note that the lid 102 is primarily composed of a front wall 11, and the housing main body 101 is primarily composed of a rear wall 12, a right wall 13, a left wall 14, an upper wall 15, and a lower wall 16. The rear wall 12 forms the back surface of the main body 1.

[0013] As shown in FIG. 4 , the lid 102 has through-holes 11a in its front wall 11 for the operation means 41 and display means 42 of the operation unit 40. The lid 102 has, on the inner surface of the front wall 11, protrusions 11b for positioning the operation unit 40, boss screws 11c for supporting and fixing the operation unit 40, engaging portions 11d for engaging with the circuit board of the operation unit 40, boss screws 11e for fixing the lid 102 to the housing body 101, and ribs 11f for regulating the position of the hot air supply unit 20 from the front side. As shown in FIG. 5 , the housing body 101 has, on the inner surface of the rear wall 12, bosses 12a for screws for fixing the lid 102, ribbed support portions 12b for supporting the hot air supply unit 20 from the rear side, and fixing portions 12c for fixing the holder 36 for holding the power cord 35. There are four bosses 12a on the top, bottom, left, and right sides. The lower boss 12a is formed on the bottom wall 16 and is provided to connect to the bottom wall 16 and a holding portion 16b that holds the filter 104. The upper boss 12a, which is the left boss 12a (see FIG. 5A), is formed on the left wall 14 and is provided to connect to a holding portion 14b that holds the circuit board 32. This reinforces the boss 12a and the holding portion 14b. As shown in FIG. 5, the support portion 12b is provided so that both left and right ends extend downward to connect to the bottom wall 16 (holding portion 16b). The fixing portion 12c has a U-shaped portion formed on the rear wall 12 and has a screw hole into which a screw for fixing the holder 36 is threaded.

[0014] As shown in Fig. 3, the housing body 101 has a through-hole 13a for the power cord 35 and an air intake 13b, for example, on the right wall 13. As shown in Fig. 5B, the housing body 101 has, for example, a pair of holding portions 13c having grooves for holding upper and lower ends of a filter 103 covering the air intake 13b so that the filter 103 can slide from the front, and a holding portion 13d having a groove into which the rear end of the filter 103 is inserted from the insertion direction (front), for example, on the inner surface of the right wall 13. As shown in Fig. 4, the housing body 101 has an air intake 14a on the left wall 14. As shown in Figs. 3 and 5A, the housing body 101 has holding portions 14b and 14c on the inner surface of the left wall 14 for holding a board 32 of the circuit unit 30. The holding portions 14b and 14c have grooves into which the upper and lower ends of the board 32 can be inserted so that the board 32 can slide from the front.

[0015] As shown in FIGS. 3 and 5 , the housing main body 101 has an air intake port 16a, for example, on the bottom wall 16. The housing main body 101 also has, for example, a pair of retaining portions 16b with grooves for holding both left and right ends of a filter 104 covering the air intake port 16a so that the filter can slide from the front, and a retaining portion 16c with a groove into which the rear end of the filter 104 is inserted from the front, for example, on the inner surface of the bottom wall 16. As shown in FIG. 3 , the housing main body 101 has a pair of legs 16d that protrude downward from positions on both the left and right sides of the air intake port 16a on the bottom wall 16. The legs 16d are formed of protruding portions extending in the front-to-rear direction. This prevents the air intake port 16a from being blocked by the installation surface when the main body 1 is used in an upright position relative to the installation surface (with the bottom wall 16 facing the installation surface). The housing main body 101 has an opening 15a and an air intake 15b for the hose 57 in the upper wall 15, and a support portion 15c on the inner surface of the upper wall 15 that supports a protruding portion 264 (see FIGS. 3 and 4) of the hot air supply unit 20 connected to the hose 57. The support portion 15c is formed as a rib extending downward from the upper wall 15, and has a groove into which the protruding portion 264 is inserted so as to be removable from the front side. There are a pair of support portions 15c on both the left and right sides.

[0016] The following description will be given using FIG. 4 and an enlarged view of FIG. 4 . The housing main body 101 has an attachment portion for attaching the nozzle 51. The attachment portion is provided on the rear side of the main body 1. Here, as the nozzle 51 moves (slides) from above relative to the main body 1, the engaging portion 542 (see FIG. 9 ) of the nozzle 51 engages with the engaged portion 105. The engaged portion 105 is provided on the upper side of the rear wall 12. The engaged portion 105 has a first groove 151 extending in a first direction, i.e., the sliding direction, and the engaging portion 542 is inserted into this first groove 151. The engaged portion 105 has a second groove 153 extending from the rear side of the first groove 151 in the insertion direction (first direction) of the engaging portion 542, i.e., from the lower end of the first groove 151 in a direction perpendicular to the insertion direction. Specifically, housing body 101 has recesses 155 at the upper end and at the corners of both left and right ends, and protruding portions 157 that protrude outward in the left-right direction from the rear end of recess 155 and extend to form a gap with bottom surface 155a of recess 155 (the surface on the far side in the sliding direction). First groove 151 is formed between front surface 155b of recess 155 and protruding portion 157, and second groove 153 is formed between bottom surface 155a of recess 155 and protruding portion 157.

[0017] The housing main body 101 has a support portion 106 that supports the nozzle 51 from below when the nozzle 51 is attached. The support portion 106 is configured with a protrusion 161 that protrudes rearward from the rear wall 12, and the supported portion 544 of the nozzle 51 (see FIG. 9 ) when the nozzle 51 is attached abuts or is adjacent to an upper surface 161a of the protrusion 161. The protrusion 161 extends in a direction (the second direction) perpendicular to the sliding direction of the nozzle 51 when attached. As a result, as shown in FIG. 2 , the protrusion 161 supports the nozzle 51 from below when the nozzle 51 is attached. Note that the protrusion 161 has two protrusions 162 in the second direction, and a groove 163 is formed between the protrusions 162. The protrusion 162 has, for example, an oval frame shape that is long in the second direction.

[0018] The housing main body 101 has a guide portion 107 that guides the guided portion 543 (see FIG. 9A ) of the nozzle 51, which slides along the back surface of the main body 1 when the nozzle 51 is attached. Here, the guided portion 543 of the nozzle 51 is configured with a protrusion 543a extending in the sliding direction (see FIG. 9A ), and the housing main body 101 has a guide groove 171 that extends in the sliding direction and into which the protrusion 543a fits. The guide groove 171 is formed between a first protrusion 173 and a second protrusion 175 that protrude rearward from the rear wall 12 of the housing main body 101. The first protrusion 173 and the second protrusion 175 are aligned in the second direction. The first protrusion 173 is formed on the side away from the circuit unit 30 and protrudes in a rectangular, square, or similar frame shape. The second convex portion 175 is formed on the side closer to the circuit unit 30 and includes a second front convex portion 175a that protrudes in a rectangular, square, or similar shape, and a second rear convex portion 175b that protrudes rearward in the third direction in a frame shape from the periphery of the second front convex portion 175a. Note that the second front convex portion 175a is located forward of the second rear convex portion 175b in the third direction, and the second rear convex portion 175b is located rearward of the second front convex portion 175a, and therefore the terms "front" and "rear" are used for convenience. Note that the protrusion 543a fits into and is guided by the guide groove 171 between the first convex portion 173 and the second rear convex portion 175b shown in FIG. 4.

[0019] The housing main body 101 has a second mounting portion for mounting the nozzle 51. The second mounting portion is provided on the rear side of the main body 1. Here, as the nozzle 51 moves (slides) from above relative to the main body 1, the second engaging portion 545 (see FIG. 9 ) of the nozzle 51 engages with the second engaged portion 108. The second engaged portion 108 is provided on the lower side of the rear wall 12. The second engaged portion 108 has a third groove 181 extending in the first direction, i.e., the sliding direction, into which the second engaging portion 545 is inserted. The third groove 181 is formed on the outer side surfaces of the first convex portion 173 and the second convex portion 175 in the left-right direction. Because the left-side third groove 181 and the right-side third groove 181 have a common structure, only the left-side third groove 181 in FIG. 4 will be described. The third groove 181 is formed by a convex portion 183 formed on the left side surface 175c of the second convex portion 175. Specifically, the convex portion 183 has a lower convex portion 183a that protrudes so as to straddle the left side surface 175c of the second convex portion 175 and the rear wall 12, and an upper convex portion 183b that protrudes so as to extend upward from the rear end of the lower convex portion 183a so as to create a gap between the rear wall 12 and the lower convex portion 183a, and the third groove 181 is formed between the upper convex portion 183b and the rear wall 12.

[0020] (2) The hot air supply unit will be described using FIG. 6 . The hot air supply unit 20 includes, in a casing 23, a blower 21 having a fan 211 and a drive unit (motor) 213 for driving the fan 211 housed in a case 214, and a heater 22 for heating the air blown by the blower 21. A plurality of blades serving as the fan 211 are provided around the rotational centerline of the drive unit 213. Note that sound-absorbing or vibration-damping material may be wrapped between the case 214 and the casing 23. The hot air supply unit 20 here includes a temperature sensor 24 (see FIG. 8 ) attached to the casing 23, a connector 25 for connecting to the hose 57, and an attachment 26 for rotatably or fixedly (non-rotatably) attaching the connector 25 to the casing 23. Note that the connector 25 is attached to the casing 23 after being connected to the hose 57, and therefore may be a part of the hose 57.

[0021] (2-1) Casing As shown in FIGS. 6 and 7 , the casing 23 is cylindrical and elongated in the direction in which the rotation axis of the blower 21 extends (hereinafter referred to as the "rotation axis direction"), and includes a semi-cylindrical first member 231A and a semi-cylindrical second member 231B (cut along an imaginary plane including the rotation axis) along the rotation axis direction. The first member 231A and the second member 231B are fixed (coupled) with, for example, screws. The casing 23 has an inlet opening 232 through which air flows into the interior and an outlet opening 233 through which air is exhausted. Here, the inlet opening 232 is located on one side (lower) of the rotation axis direction (first direction), and the outlet opening 233 is located on the other side of the rotation axis direction. 6 and 7, when the casing 23 is configured with the first member 231A, the reference numeral for that component is marked with "A," and when the casing 23 is configured with the second member 231B, the reference numeral for that component is marked with "B." For example, in the inlet-side opening 232, the portion formed by the first member 231A is marked with "232A," and the portion formed by the second member 231B is marked with "232B." The casing 23 integrally supports the blowing means 21 and the heating means 22 inside the casing 23, between the inlet-side opening 232 and the outlet-side opening 233. Here, the heating means 22 is disposed closer to the outlet-side opening 233 than the inlet-side opening 232, and the blowing means 21 is disposed closer to the inlet-side opening 232 than the outlet-side opening 233. Preferably, the heating means 22 is disposed closer to the outlet opening 233 than the inlet opening 232, and the blowing means 21 is disposed closer to the inlet opening 232 than the outlet opening 233. This makes it easier to assemble the casing 23 into the housing 10 in this embodiment than in the conventional art in which a casing housing the blowing means and a casing housing the heating means are separately assembled into the housing. For example, the casing needs to be assembled into the housing so that there are no gaps between the casings to prevent pressure loss. However, with the configuration of this embodiment, this is not necessary when assembling the casing 23 with respect to the blowing means 21 and the heating means 22. The inlet opening 232 is disposed so that a centerline (corresponding to the rotation axis in FIG. 6A ) passing through its center and extending in the direction of the rotation axis intersects with the opening plane of the outlet opening 233.As a result, air flowing in from the inlet opening 232 flows smoothly (linearly) toward the outlet opening 233 and flows out from the outlet opening 233. In this example, the inlet opening 232 and the outlet opening 233 are circular. The opening area (diameter) of the outlet opening 233 is larger than the opening area (diameter) of the inlet opening 232. This makes it easier for the air sent out from the blower means 21 to hit a wide area of ​​the surface of the heating means 22, so that the air is sufficiently heated. Note that the portion of the casing 23 that supports the blower means 21 is cylindrical, and the portion that supports the heating means 22 is rectangular. The casing 23 has an outlet 234 for leading the connection terminal 223 of the heating means 22 to the outside, and a recess 235 for the temperature sensor 24.

[0022] (2-2) Air Blower This will be explained using FIG. 6. The air blower 21 draws air from the air intakes 13b and 16a of the main body 1 and sends it toward the heating means 22. The air blower 21 includes a motor 213, a fan 211 disposed on the outer periphery of the motor 213, and a case 214 housing the motor 213 and fan 211, which are integrated into one unit. The motor 213 can be a DC motor (including brushed and brushless), an AC motor, or the like. Here, a brushless motor (BLDC) is used, which allows for high output and energy savings. The motor 213 is disposed such that its rotation axis coincides with or is close to the central axis of the casing 23. The case 214 is cylindrical and has multiple protrusions 214a protruding radially outward on its outer periphery. The air blower 21 is supported by the casing 23 when the protrusions 214a abut against the inner periphery of the casing 23. This reduces the contact area between the blower 21 and the casing 23, suppressing vibration of the casing 23 and improving quietness. The case 214 may be made of resin or an elastic material. The blower 21 is disposed upstream of the heating means 22 in the direction of its rotation axis. In other words, the heating means 22, the blower 21, the inlet opening 232 of the casing 23, and the air intake 16a of the housing 10 are arranged in this order from downstream to downstream in the direction of the rotation axis. The blower 21 is disposed so that its rotation axis intersects with the opening plane of the outlet opening 233. This allows the blower 21 to draw air through the suction port 213a and discharge the air smoothly (linearly) from the outlet opening 233. The blower 21 is disposed with its suction port 213a facing the inlet opening 232 of the casing 23. As a result, air flowing in from the inlet opening 232 travels a short flow path toward the suction port 213a of the blower 21. The radial width (diameter) of the drive unit (motor) 213 is smaller than the opening area of ​​the outlet opening 233. More specifically, when viewed from the direction of the rotation axis, the outer circumferential edge of the motor 213 is contained within the opening area of ​​the outlet opening 233. As a result, negative pressure is likely to be generated at the inlet opening 232, thereby improving suction performance.

[0023] (2-3) Heating Means The heating means 22 will be described with reference to FIG. 6. The heating means 22 includes a heater 221 and a connection terminal 223 for supplying power to the heater 221. When viewed from the direction of the rotation axis, the heater 221 has a rectangular or similar shape. The heater 221 may be a ceramic heater (PTC heater) or the like. As shown in FIG. 8A, the temperature sensor 24 that detects the temperature of the heater 221 is fitted into a recess 235 in the casing 23. The recess 235 is recessed toward the heater 221 to bring the heater 221 and the temperature sensor 24 closer to each other. Instead of the recess 235, the temperature sensor 24 may be exposed inside the casing 23 through a through-hole. In this case, the temperature sensor 24 may be in contact with or spaced apart from the heater 221. The temperature sensor 24 may be, for example, a bimetal, a thermal fuse, a thermistor, or any other suitable sensor. As shown in FIG. 8A , the heating means 22 is biased toward the temperature sensor 24 by an elastic body 27. This allows the temperature sensor 24 to approach the heater 221 more easily, enabling highly accurate temperature detection. The elastic body 27 is formed, for example, by bending a plate material. The elastic body 27 has at least a base portion 271 disposed in the casing 23 and an extension portion 273 that bends at an acute angle from the base portion 271 and extends toward the heater 221. The extension portion 273 is configured to be elastically deformable in the biasing direction. The elastic body 27 is supported and positioned within the recess 236 of the casing 23. Specifically, at least one of one end and the other end in the length direction and one end and the other end in the width direction of the base portion 271 abuts against the inner wall constituting the recess 236, thereby positioning the elastic body 27. The extension portion 273 is housed in contact with the heater 221. The temperature sensor 24 and the elastic body 27 face each other across the heater 221. The casing 23 also functions as a casing that supports the heater 221 by contacting the heater 221 .

[0024] (2-4) Connector As shown in Figures 6 and 7, the connector 25 has a cylindrical shape with a bottom, a spiral ridge 253 formed on the inner circumferential surface of a tubular portion 251, and a through hole 257 formed in a bottom portion 255. The end of the hose 57 is inserted into the tubular portion 251 and supported by the ridge 253. The through hole 257 in the bottom portion 255 provides a filtering function. The hose 57 may be detachable from the connector 25. The tubular portion 251 of the connector 25 is inserted into the tubular portion 237 at the other end (on the outlet opening 233 side) of the casing 23 in the rotational axis direction.

[0025] (2-5) Mounting Body As shown in FIG. 6 , the mounting body 26 has a recess 263 with an opening 262 in a bottom 261, and a protruding portion 264 that protrudes outward from the edge of the recess 263 opposite the bottom 261. The mounting body 26 is fixed to the casing 23 with a screw 269 in a state in which the recess 263 covers the cylindrical portion 251 of the connecting body 25 that protrudes from the casing 23 in the rotation axis direction, and the peripheral portion of the opening 262 in the bottom 261 abuts against the end face of the cylindrical portion 251 of the connecting body 25. The screw 269 is inserted through a fixing portion (through hole) 265 of the protruding portion 264 of the mounting body 26 and threadedly engages with a fixing portion (screw hole or threaded hole) 238 of the casing 23. The protruding portion 264 of the mounting body 26 is supported by the support portion 15c of the housing main body 101.

[0026] (3) Circuit Unit The circuit unit 30 receives power from a commercial power source via a power cord 35 and generates drive power to drive the hot air supply unit 20, the temperature sensor 24, the operation unit 40, etc. As shown in FIGS. 3 to 5 , the circuit unit 30 includes a plurality of electronic components 31 a, 31 b and a circuit board 32 on which the plurality of electronic components 31 a, 31 b are mounted, and is housed within the housing 10. As shown in FIG. 5A , the circuit board 32 is held by holding portions 14 b, 14 c of the left wall 14. The circuit unit 30 is disposed between the hot air supply unit 20 and the left wall 14, and as shown in FIG. 3 , the electronic components 31 a, 31 b are disposed on both ends of the circuit board 32 in the third direction so as not to interfere with the hot air supply unit 20. A large electronic component 31b (e.g., an electrolytic capacitor) is disposed on the rear side of the substrate 32, and a portion (rear portion) of the electronic component 31b protrudes into the second convex portion 175 of the rear wall 12, as shown in FIG. 5 . By utilizing the second convex portion 175 in this manner, the large electronic component 31b can be accommodated without substantially increasing the size of the housing 10. Because the circuit unit 30 is disposed outside the casing 23 that accommodates the heating means 22, it is less susceptible to the heat from the heating means 22. Furthermore, because the circuit unit 30 is disposed on the flow path of air drawn in from the intake ports 14a and 15b by the air blowing means 21, the circuit unit 30 is configured to be cooled by the air flowing through the flow path.

[0027] (4) Operation Unit As shown in Figures 2 to 4, the operation unit 40 has an operation means 41 and a display means 42 on a board 43, and the board 43 is fixed to the front wall 11 with the operation means 41 and the display means 42 fitting into the through-holes 11a in the front wall 11. The operation unit 40 has an operation control unit for controlling the operation of at least the air blowing means 21, in this case the hot air supply unit 20. The operation control unit is composed of electronic components and is mounted on the board 43 or the board 32 of the circuit unit 30. The board 43 is provided parallel to or along the front wall 11.

[0028] 3. Discharge Unit As shown in FIG. 2 , the discharge unit 5 has a hose 57 connected to the main body 1 so as to communicate with the air blowing means 21, and a nozzle 51 connected to the hose 57. The warm air generated by the main body 1 is discharged from the discharge port 511 of the nozzle 51. One end of the hose 57 is connected to the warm air supply unit 20, and the other end of the hose 57 is connected to the nozzle 51. An opening at one end of the hose 57 is an inlet to the hose 57, and an opening at the other end is an outlet from the hose 57. The discharge unit 5 has a bottom surface that faces the mattress. The bottom surface of the discharge unit 5 is detachably attached to the back surface of the main body 1. In other words, the discharge unit 5 is attached to the back surface of the main body 1 with the hose 57 extending to one side (rear side) in the first direction, folding back midway, and bending to extend to the other side. In other words, the hose 57 is bent in a "U" shape, and the nozzle 51, which is long in the first direction, is parallel to the first direction of the main body 1. That is, the nozzle 51 has a cylindrical shape as a whole, and the bottom surface of the nozzle 51 is attached to the back surface of the main body 1 with the cylindrical axis of the nozzle 51 parallel to the first direction (longitudinal direction) of the main body 1. In this state (attached state), the bottom surface of the nozzle 51 faces the back surface (rear wall) of the main body 1.

[0029] (1) The hose 57 is bendable and extendable. The opening shape and opening area of ​​the inlet of the hose 57 are the same as those of the outlet. The opening shape is circular. The inlet of the hose 57 faces the outlet opening 233 of the hot air supply unit 20, and the rotation axis of the blower 21 intersects with the opening plane of the inlet of the hose 57. Here, an imaginary line extending from the rotation axis passes through the center of the inlet of the hose 57 or its vicinity. This allows the hot air generated by the hot air supply unit 20 to smoothly flow into the hose 57. The inlet (opening area) of the hose 57 is larger than the suction port 213a (opening area) of the hot air supply unit 20 of the blower 21. This allows the hot air to be blown out over a wide area.

[0030] (2) Nozzle The nozzle 51 will be mainly described using Figures 9 to 11. The nozzle 51 has a nozzle main body 52 that has one end, into which hot air flows from the main body 1, on one side (rear side) in the first direction and has an outlet 511 at the other end on the other side (front side) in the first direction, and a support member 53 that is rotatably supported by a support portion 521 of the nozzle main body 52. ​​Here, a state in which the support member 53 is close to the nozzle main body 52 is a closed state (or first state), and a state in which the support member 53 is separated from the nozzle main body 52 is an open state (or second state).

[0031] The nozzle body 52 is cylindrical, and one end of the nozzle body 52 in the first direction is connected to the other end of the hose 57. The extension direction of the cylindrical axis of the nozzle body 52 (also referred to as the "cylinder axis direction") coincides with the first direction.

[0032] As shown in FIG. 10 , the nozzle body 52 has a support portion 521 that rotatably supports the support member 53, a restricting portion 522 that restricts the rotation of the support member 53, a first recess 523 that recesses to fit within the movable range of the support member 53, a second recess 524 into which the support member 53 fits, and a retaining portion 525 that holds (maintains) the closed state of the support member 53. Note that the first recess 523 and the second recess 524 are not essential components. The nozzle body 52 has an engaging portion 542 that engages with the engaged portion 105 (see FIG. 4 ) of the main body 1 and a guided portion 543 that is guided by the guide portion 107 (see FIG. 4 ) of the main body 1 on the bottom wall 527 side. Note that the engaging portion 542 is provided using legs 541. The bottom wall 527 also constitutes a bottom surface. The nozzle body 52 has a supported portion 544 on the bottom wall 527 side that is supported by the support portion 106 (see FIG. 4) of the main body 1. The nozzle body 52 has a second engaging portion 545 on the bottom wall 527 side that engages with the second engaged portion 108 (see FIG. 4) of the main body 1. The nozzle body 52 has legs 528 on the bottom wall 527 that are spaced apart in the second direction. The guided portion 543, the supported portion 544, the second engaging portion 545, and the legs 528 are provided by utilizing two recesses 546 formed in the bottom wall 527 at an interval in the second direction.

[0033] The rotation axis of the support member 53 extends in a second direction (width direction) perpendicular to the first direction (cylinder axis direction) and the third direction (up-down direction), based on the state in which the support member 53 is positioned at the upper side of the nozzle body 52 (e.g., FIG. 9 ). Here, the rotation direction of the support member 53 from the closed state to the open state is referred to as the opening direction, and the rotation direction from the open state to the closed state is referred to as the closing direction. In other words, when the discharge portion 5 is disposed between a mattress (as an example of an object to be dried) and a comforter, the direction away from the mattress is referred to as the opening direction, and the direction toward the mattress is referred to as the closing direction. The support portion 521 is provided on the other end side in the first direction (the discharge port 511 side). The support portion 521 is configured as a fitting hole or fitting hole into which the supported portion (convex portion) 533 of the support member 53 fits. The support portion 521 is provided on a flat portion 523c of a first recess 523 that is a peripheral wall constituting the nozzle body 52 and faces in the second direction.

[0034] As shown in the enlarged view of FIG. 10B , the first recess 523 is composed of a flat portion 523c formed in the rotation region of the extension portion 532 of the support member 53, a closing-side step 523a formed on the edge of the rotation region on the closing side, and an opening-side step 523b formed on the edge of the rotation region on the opening side. That is, in FIG. 11 , the first recess 523 is formed so that at least the region between the closing-side edge 532b on the closing side of the extension portion 532 of the support member 53 in the closed state as shown in FIG. 11A and the opening-side edge 532a on the opening side of the extension portion 532 of the support member 53 in the open state is recessed. The depth of the first recess 523 corresponds to the thickness of the extension portion 532 of the support member 53. The first recess 523 also has one or more discharge holes 523d ​​for discharging a portion of the hot air flowing in from the hose 57 to the outside from the nozzle 51.

[0035] The second recess 524 is formed in a region from a position close to the center of the upper wall 526 in the first direction to one end. The second recess 524 is recessed to correspond to the main body 531 of the support member 53 in the closed state. Both ends of the second recess 524 in the second direction are connected flush with the flat portion 523c of the first recess 523. The depth of the second recess 524 corresponds to the thickness of the main body 531 of the support member 53.

[0036] The restricting portion 522 is provided to protrude on the rotational trajectory of the support member 53 (extension portion 532), protrudes outward in the second direction, and is retractable in the second direction. In this embodiment, the restricting portion 522 is provided on the flat portion 523c of the first recess 523. As shown in the enlarged view of FIG. 10 , the restricting portion 522 is formed, for example, inside a "U"-shaped through groove 522a. The restricting portion 522 has a base end portion 522b and an abutting portion 522c formed on the opposite side of the base end of the base end portion 522b, and is configured to be elastically deformable inward in the second direction. The abutting portion 522c protrudes outward in the second direction beyond the base end portion 522b. As a result, the abutment portion 522c abuts against the open edge 532a of the extension portion 532 of the support member 53 in the closed state as shown in Figure 11A, and against the closed edge 532b of the extension portion 532 of the support member 53 in the open state as shown in Figure 11B, thereby restricting the rotation of the support member 53 and maintaining the closed or open state.

[0037] The holding portion 525 is provided in the second recess 524. The holding portion 525 is configured as a through-hole, and the engaging portion 534 of the support member 53 engages with the through-hole. As shown in FIG. 9 , the leg portion 528 is configured as a protrusion including a side surface 546c on the outer side of the recess 546 in the second direction, and is located on both sides in the second direction. With the bottom surface 546a of the recess 546 as the reference, the leg portion 528 protrudes to one side (downward) in the third direction and extends along the first direction. This prevents the leg portion 528 from coming into contact with the mattress and causing the nozzle 51 to rotate (tip over) even when the nozzle 51 is placed on a soft object to be dried, such as a mattress.

[0038] The leg portions 541 are formed on one end side (rear end side) of the bottom wall 527 in the first direction. The leg portions 541 are formed on both end sides (left and right end sides) in the second direction, and two of them are provided at a distance in the second direction. This allows each leg portion 541 to be provided with an engagement portion 542. The leg portions 541 protrude from the bottom wall 527 to one side (downward) in the third direction. This allows the nozzle 51 to be stably installed on the installation surface. As shown in FIG. 12 , the engagement portion 542 includes an extension portion 542a extending inward in the second direction from an inner surface 541a of the leg portion 541 in the second direction, the extension portion 542a having a first end (rear end) of the extension portion 542a that connects to the leg portion 541, and a protruding portion (claw portion) 542c that protrudes from the other end (front end) of the extension portion 542a in the first direction toward the other side (upper side) in the third direction. The upper surface 542d of the extension portion 542a is an inclined surface that slopes upward toward the engagement side (the other side in the first direction) in the sliding direction. Furthermore, because the extension portion 542a connects to the connecting portion 542b at the one side (rear side) in the first direction, the protruding portion 542c side of the extension portion 542a is elastically deformable in the third direction.

[0039] The guided portion 543 is formed between two recesses 546 spaced apart in the second direction and is configured by a protrusion 543a extending in the first direction relative to the bottom surface 546a of the recess 546. The dimension of the recess 546 in the second direction matches the dimension of the first convex portion 173 and the second convex portion 175 of the main body 1 in the second direction. This allows the nozzle 51 to slide in the first direction with the first convex portion 173 and the second convex portion 175 fitted into the recess 546. The supported portion 544 is configured by a rear side surface 546b of the recess 546. The bottom surface 546a of the recess 546 is higher than the protrusion 543a. The second engaging portion 545 is formed on the other end side (front end side) of the bottom wall 527 in the first direction. The second engaging portions 545 are formed on both ends in the second direction. The second engaging portion 545 here is provided by utilizing the leg portion 528, and is provided downward at a distance from the bottom surface 546a of the recess 546. In other words, a groove 545b (see FIG. 9) is formed between the recess 546 and the second engaging portion 545.

[0040] 10, the nozzle main body 52 is configured by combining a cylindrical body 551, a connector 553 that is provided on the inlet side of the cylindrical body 551 and that connects to the hose 57, an attachment 555 for attaching the connector 553 to the cylindrical body 551, and a discharge port body 557 that has an opening that forms the discharge port 511. Note that the connector 553 is disposed inside the cylindrical body 551 after being connected to the hose 57, and therefore may be configured as part of the hose 57.

[0041] 4. Attaching the Discharge Portion to the Main Body (1) With the connection side of the main body 1 with the hose 57 facing upward (one side in the first direction) and the discharge port 511 of the nozzle 51 facing downward (the other side in the first direction), the protrusion 543a of the guided portion 543 of the nozzle 51 is fitted into the guide groove 171 of the guiding portion 107 of the main body 1. In other words, the first convex portion 173 and the second convex portion 175 of the main body 1 are fitted into the two recesses 546 of the nozzle 51 aligned in the second direction. This completes the alignment of the nozzle 51 with the main body 1. In this case, since the protrusion portion 543a of the nozzle 51 is arranged in a straight line over almost the entire length of the nozzle 51, the protrusion portion 543a of the nozzle 51 can be easily inserted into the guide groove portion 171 between the first convex portion 173 and the second convex portion 175 simply by fitting the protrusion portion 543a of the nozzle 51 into the groove portion 163 of the support portion 106 on the upper side of the main body portion 1 and moving the nozzle 51 downward.

[0042] (2) With the guided portion 543 of the nozzle 51 engaged with the guiding portion 107 of the main body 1, the nozzle 51 is further moved downward. At this time, the lower portion of the nozzle 51 is supported by the first convex portion 173 and the second convex portion 175, and the upper portion is supported by the two convex portions 162. This allows the downward movement of the nozzle 51 to occur approximately parallel to the rear wall 12 of the main body 1, preventing the engaging portion 542 of the nozzle 51, described below, from entering the first groove 151 of the main body 1 at an angle or the second engaging portion 545 of the nozzle 51 from coming off the third groove 181 of the main body 1.

[0043] (3) When the engaging portion 542 approaches the first groove 151 and the second engaging portion 545 approaches the third groove 181 from above (first states A and B in FIG. 13 , where the engaging portion 542 side is labeled “A” and the engaging portion 545 side is labeled “B”), and the nozzle 51 is further moved downward in a state where the guided portion 543 of the nozzle 51 is guided by (engaged with) the guiding portion 107 of the main body 1, the engaging portion 542 enters the first groove 151 and the second engaging portion 545 enters the third groove 181, as shown in second states A and B in FIG. 13 . At this time, the convex portion 542 c on the lower end side of the engaging portion 542 of the nozzle 51 elastically deforms forward, and the protruding portion 157 in the recess 155 of the main body 1 elastically deforms rearward.

[0044] (4) Furthermore, when the nozzle 51 is further moved downward while the guided portion 543 of the nozzle 51 is guided (engaged) by the guiding portion 107 of the main body 1, as shown in third states A and B in FIG. 13 , the moving end (lower end) of the engaging portion 542 abuts against the bottom surface 151 a of the recess 155 of the main body 1, or the rear side surface 546 b (supported portion 544) of the recess 546 of the nozzle 51 abuts against the protruding portion 161 b (supporting portion 106) of the main body 1. As a result, with the extended portion 542 a of the engaging portion 542 of the nozzle 51 inserted into the first groove 151 of the main body 1, the protruding portion 542 c of the engaging portion 542 of the nozzle 51 recovers from elastic deformation and fits into the second groove 153, making it difficult for the nozzle 51 to move upward relative to the main body 1. In this way, the nozzle 51 is attached to the main body 1 in a manner that makes it difficult for it to come off. In this state, the engaging portion 542 engages with the engaged portion 105 at the top of the nozzle 51, and the second engaging portion 545 engages with the second engaged portion (the convex portion 183) at the bottom of the nozzle 51. Therefore, the nozzle 51 is attached to the main body 1 in a stable state.

[0045] 5. Dimensions: The nozzle 51 has a trapezoidal or trapezoid-like shape in a cross section perpendicular to the first direction, with the upper base smaller than the lower base. This improves stability when the nozzle 51 is placed on, for example, a mattress. The dimension L1 in the second direction of the bottom surface (bottom wall 527) of the nozzle 51 facing the mattress, as shown in FIG. 14A, is within the range of 1.5 to 2.9 times, and preferably 1.7 to 2.7 times, the diameter D1 of the hose 57, when viewed from the bottom side. This reduces the impact of movement of the comforter. In this example, the dimension L1 in the second direction is 84 mm, and the diameter D1 of the hose 57 is 38 mm, but these dimensions are not necessarily required. When the nozzle 51 is attached to the rear surface (rear wall 12) of the main body 1, the bottom surface covers more than 80% of the rear surface, as shown in FIG. 14B. In other words, the projected area of ​​the bottom surface (bottom wall 527) is 80% or more of the projected area of ​​the back surface of the main body 1. This allows the bottom surface of the nozzle 51 to be larger than the back surface of the main body 1, making it less susceptible to the effects of moving the comforter.

[0046] <Modifications> Although an embodiment has been described, the present invention is not limited to this embodiment, and may be modified as follows, for example. Also, the present invention may be a combination of an embodiment and a modification, or a combination of modifications. Also, examples not described in the embodiment or modification, and design changes within the scope of the gist, are included in the present invention.

[0047] 1. Main Body (1) The dimension of the main body 1 in the first direction is approximately the same as the dimension of the nozzle 51 in the first direction (within a range of 0.9 to 1.1 times). However, if the design of the nozzle 51 when attached is not a consideration, the dimensions do not need to be approximately the same, and the dimension of the nozzle 51 may be longer than 1.1 times that of the main body 1. This allows the hose 57 to be longer. Furthermore, if the stability of the nozzle 51 during use is not a consideration, the bottom surface may cover less than 80% of the back surface when the nozzle 51 is attached to the main body 1. While the back surface of the main body 1 serves as the attachment portion for the nozzle 51, in the state shown in FIG. 1A , one side in the second direction (the right or left surface) may also serve as the attachment portion for the nozzle 51. In this case, the direction in which the main body 1 and the nozzle 51 are adjacent to each other is the third direction, and the operation unit 40 is provided on the right or left surface.

[0048] (2) The operation unit 40 was provided on the front wall 11, but may be provided on the right wall 13, the left wall 14, straddling the front wall 11 and the left wall 14, or straddling the front wall 11 and the right wall 13. The operation unit 40 has an operation control unit, but the operation control unit may be provided in the circuit unit 30. (3) The hot air supply unit 20 is provided with the air blowing means 21 on the upstream side and the heating means 22 on the downstream side, but the reverse is also possible. However, considering the heat resistance of the air blowing means 21, it is preferable that the air blowing means 21 is on the upstream side. In the hot air supply unit 20, the inlet opening 232 of the casing 23 and the air intake 16a of the housing 10 are arranged close to each other in the first direction, but they may be arranged apart. However, when air outside the housing 10 is directly drawn into the hot air supply unit 20, the distance between the inlet opening 232 and the air intake 16a is preferably equal to or less than the maximum dimension of the suction port 213a to ensure smooth suction. (4) The hot air supply unit 20 has the inlet opening 232 of the casing 23, the suction port 213a of the air blower 21, the heating means 22, and the outlet opening 233 on the rotation axis (straight line) of the air blower 21. However, these may be arranged in this order on a gently curved line. This also allows for smooth air suction and delivery. (5) The hot air supply unit 20 includes a connector 25 for connecting to the hose 57. However, the connector 25 may be rotatably fixed directly to the housing 10. Considering assembly efficiency, a structure in which the hot air supply unit 20 and the discharge unit 5 are connected by the hose 57 and then assembled into the housing 10 is preferred. (6) The electronic components 31 of the circuit unit 30 may be mounted on the board 43 of the operation unit 40 to form a single circuit section (single board). The board 32 of the circuit unit 30 is disposed close to the left wall 14 and substantially parallel to the left wall 14, but may be disposed close to the rear wall 12 and parallel to the rear wall 12, for example. However, in consideration of assembly efficiency, it is preferable to provide the board 32 on the housing main body 101 side.

[0049] (7) The guide groove 171 of the guide portion 107 is formed between the first convex portion 173 and the second convex portion 175 and has a groove shape based on the protruding tips of the first convex portion 173 and the second convex portion 175 (the rear wall 12 itself is not recessed). However, the guide groove may be formed in the rear wall 12 as a groove recessed on the front side in the third direction without providing the first convex portion 173 and the second convex portion 175, or the first convex portion 173 and the second convex portion 175 may be provided and a groove may also be provided in the rear wall 12. (8) The first convex portion 173 protrudes in a frame-like shape (the interior of the frame does not protrude), but the entire first convex portion 173 may protrude (the interior of the frame also protrudes in the same way). (9) The second convex portion 175 has a second front convex portion 175a and a second rear convex portion 175b. However, it may be configured with only the second front convex portion 175a (which needs to protrude more by the amount of protrusion of the second rear convex portion 175b) without providing the second rear convex portion 175b, or conversely, it may be configured with only the second rear convex portion 175b (which needs to protrude more by the amount of protrusion of the second front convex portion 175a) that protrudes in a frame shape like the first convex portion 173 without providing the second front convex portion 175a.

[0050] 2. Discharge Portion (1) The nozzle 51 has the support portion 521 on the other side of the center of the nozzle body 52 in the first direction. However, the support portion 521 may be located at the center in the first direction or on one side of the center in the first direction. Note that if the longitudinal length of the support member 53 (the length in the first direction in the closed state) is to be increased, the support portion 521 should be located on the other side of the first direction. (2) In the embodiment, the angle A (see FIG. 11 ) between the first direction and the third direction, which defines the rotation range of the support member 53, is 110°. However, if this angle is 90° or greater, the weight load of the material to be dried (e.g., a comforter) acts in the opening direction of the support member 53, preventing the support member 53 from closing. The angle A between the first direction and the third direction is preferably 130° or less, and preferably 120° or less. By setting the angle A within this range, the load (torque) of the material to be dried acting on the support portion 521 and the supported portion 533 can be reduced. The angle A between the first direction and the third direction may be 90° or less. In this case, this can be achieved by providing a restricting portion (a first auxiliary support portion that supports from the closing side in the rotation direction) that restricts rotation toward the closing direction. (3) The support member 53 is rotatably supported by the support portion 521, but may be configured to be detachable between the open state and the closed state. For example, this can be achieved by providing a closing support groove along the first direction and an opening groove along the third direction in the nozzle body 52, and inserting and removing the support member. (4) In the closed state (a state in which the support member 53 is supported by the support portion 521 so as to extend in the first direction), one end (rear end) of the support member 53 in the first direction is located on the other side of one end of the nozzle body 52 in the first direction. However, one end (rear end) of the support member 53 may be configured to protrude further in the first direction than one end of the nozzle body 52. This allows the support member 53 to be longer in the first direction, and for example, the space between the mattress and the comforter can be increased.

[0051] 3. Regarding Attachment of the Nozzle (1) In the embodiment, the main body 1 includes the engaged portion 105, and the nozzle 51 includes the engaging portion 542. However, the engaging relationship may be reversed. That is, the main body 1 may include the extension portion (562a) or the claw portion (542c), and the nozzle 51 may include the first groove (151) or the second groove (155). (2) In the embodiment, the main body 1 includes the second engaged portion 108, and the nozzle 51 includes the second engaging portion 545. However, the engaging relationship may be reversed. That is, the main body 1 may include the protrusion portion (545), and the nozzle 51 may include the third groove (181). (3) In the embodiment, the nozzle 51 includes the protrusion portion 543a, and the main body 1 includes the guide groove portion 171. However, the nozzle 51 may include the guide groove portion (171), and the main body 1 may include the protrusion portion (543a). (4) In the embodiment, the engaging portion 542 has a claw portion (542c), but the second engaging portion 545 may have a claw portion, or both the engaging portion 542 and the second engaging portion 545 may have claw portions. (5) In the embodiment, the nozzle 51 is attached to the main body 1 using two engagement structures, the engaging portion 542 and the second engaging portion 545. However, for example, the nozzle 51 may be attached using only the engaging portion 542. In other words, the engaging portion 542 may be provided so that the nozzle 51 is attached to the main body 1 in a cantilevered state. Furthermore, when the nozzle 51 is attached using the engaging portion 542, the engaging portion 542 and the engaged portion 105 may be provided midway in the first direction. (6) In the embodiment, by moving the nozzle 51 in a first direction relative to the main body 1, the protrusion 543a of the nozzle 51 is guided by the guide groove 171 of the main body 1, the engaging portion 542 engages with the engaged portion 105, and the second engaging portion 545 engages with the second engaged portion 108. However, for example, the nozzle 51 may be guided and engaged with the main body by moving the nozzle 51 in a second direction perpendicular to the first direction. 4. In other embodiments, the nozzle 51 is disposed between the mattress and the comforter, but it can also be disposed between the mattress and a blanket, the comforter and a blanket, etc. In other words, the nozzle may be disposed between the first object to be dried and the second object to be dried disposed above the first object to be dried. In other words, an example of the first object to be dried may be a mattress, and an example of the second object to be dried may be a comforter.

[0052] <<Inventions>> The above-described embodiments and modifications include at least the following inventions. Each of the following inventions is not bound by the specific features or configurations of the embodiments of other inventions.

[0053] <Invention 1> 1. Prior art drying devices have been disclosed that include a nozzle unit with an air outlet for blowing air and a movable unit whose position or orientation can be changed relative to the nozzle unit (e.g., Reference 1: JP 2018-42885 A). 2. Problems to be Solved by Invention 1: In the drying devices of the above technology, the nozzle unit is inserted between the mattress and the comforter during use. Adjusting the position of the comforter in this state causes the nozzle unit to move with the movement of the comforter, resulting in a problem that the position and orientation of the nozzle unit are easily changed. Invention 1 aims to provide a drying device that can reduce the influence of the movement of the comforter on the position or orientation of the discharge unit placed between the mattress and the comforter. The terms "nozzle unit," "nozzle unit," and "movable unit" in Reference 1 correspond to "nozzle," "nozzle unit," and "support member" in this specification.

[0054] 3. Invention 1 A first drying device according to Invention 1 comprises a main body that generates hot air, and a discharge section that is inserted between a mattress and a comforter and discharges the hot air generated by the main body, the discharge section having a nozzle with a discharge outlet and a hose connected to the main body, the nozzle having a bottom that faces the mattress, the hose connected to one end of the nozzle in a first direction, and the discharge outlet at the other end on the other side of the first direction, the dimension of the bottom in a direction perpendicular to the first direction when viewed from above being 1.5 to 2.9 times the diameter of the hose. This makes it possible to make the position or orientation of the nozzle placed between the mattress and the comforter less susceptible to the movement of the comforter.

[0055] A second drying device according to the first aspect of the present invention comprises a main body that generates hot air, and a discharge section that is inserted between a mattress and a comforter and discharges the hot air generated by the main body, the discharge section having a nozzle with a discharge port and a hose connected to the main body, the nozzle having a bottom that faces the mattress, the hose connected to one end in a first direction, and the discharge port at the other end on the other side in the first direction, the bottom of the nozzle being detachable from the back of the main body, and when the nozzle is attached to the back, the bottom covers 80% or more of the back. This makes it possible to reduce the influence of the movement of the comforter on the position or orientation of the nozzle placed between the mattress and the comforter.

[0056] A third drying device according to the present invention is the first or second drying device, wherein a direction perpendicular to the first direction when the nozzle is viewed from above is a second direction, and the bottom surface portion has legs on both sides in the second direction, thereby allowing the nozzle to be arranged stably in the second direction when it is arranged.

[0057] A fourth drying device according to the present invention is the third drying device, wherein the legs extend along the first direction, whereby the nozzle can be stably arranged in the first direction when the nozzle is arranged.

[0058] <Invention 2> 1. Prior art drying devices include an air intake, a heating means for heating air drawn in through the air intake, and a discharge means for discharging the air heated by the heating means onto the object to be dried. The nozzle body of the discharge means is accommodated in a recess in the housing while the hose is bent (see, for example, JP 2018-42885 A). 2. Problems to be Solved by Invention 2: The drying devices of the above technology have a problem in that the nozzle body tends to come out of the recess due to the flexibility and flexibility of the hose. Invention 2 aims to provide a drying device that can improve the stability of the nozzle unit when stored. Note that the "discharge means" and "nozzle body" in Document 1 correspond to the "discharge unit" and "nozzle" in this specification.

[0059] 3. Invention 2 A first drying device according to invention 2 includes a main body that generates hot air and a discharge unit that discharges the hot air generated by the main body. The discharge unit has a nozzle having an outlet and a hose connected to the main body. The nozzle is detachably attached to the rear surface of the main body so that, when the hose is bent, the bottom surface of the nozzle faces the rear surface of the main body. The nozzle has a nozzle main body having the outlet and an engaging portion that engages with the engaged portion of the main body. One side of the nozzle and the rear surface of the main body has a protrusion, and the other side has a guide groove that guides the protrusion, the guide groove extending in a sliding direction perpendicular to the facing direction. This improves the stability of the nozzle when stored.

[0060] A second drying device according to a second aspect of the present invention is the first drying device, wherein the engaged portion has a first groove extending in the sliding direction, and the engaging portion is inserted into the first groove, thereby allowing the nozzle to be attached to the main body.

[0061] A third drying device according to a second aspect of the present invention is the drying device according to the first or second aspect, wherein the engaging portion has an extending portion extending along the sliding direction and a claw portion protruding from the extending portion in a direction intersecting the sliding direction, the engaged portion has a second groove extending in a direction intersecting the sliding direction, and the claw portion fits into the second groove when the extending portion is inserted into the first groove. This makes it difficult for the nozzle attached to the main body to come off the main body.

[0062] A fourth drying device according to a second aspect of the present invention is any one of the first to third drying devices, wherein the engaging portion is provided so that the nozzle is attached to the main body in a cantilevered state, thereby enabling the nozzle to be attached to the main body with a simple structure.

[0063] A fifth drying device according to a second aspect of the present invention is any one of the first to fourth drying devices, wherein the main body has a second engaged portion, the nozzle has a second engaging portion that engages with the second engaged portion of the main body, the second engaged portion has a third groove extending in the sliding direction, and the second engaging portion is inserted into the third groove. This makes it difficult for the nozzle attached to the main body to come off from the main body.

[0064] X Drying device 1 Main body 5 Discharge section 10 Housing 20 Warm air supply unit 21 Air blowing means 22 Heating means 30 Circuit unit 40 Operation unit 51 Nozzle 52 Nozzle main body 53 First support member 54 Second support member 57 Hose

Claims

1. A drying device comprising: a main body portion that generates warm air; and a discharge portion that is inserted between a mattress and a comforter and discharges the warm air generated by the main body portion, wherein the discharge portion has a nozzle having a discharge outlet, and a hose connected to the main body portion, wherein the nozzle has a bottom portion that faces the mattress, and the hose is connected to one end of the nozzle in a first direction, and the nozzle has the discharge outlet at its other end on the other side of the first direction, and the dimension of the bottom portion in a direction perpendicular to the first direction when the nozzle is viewed from above is 1.5 to 2.9 times the diameter of the hose.

2. A drying device comprising: a main body portion that generates warm air; and a discharge portion that is inserted between a mattress and a comforter and discharges the warm air generated by the main body portion, wherein the discharge portion has a nozzle having an outlet, and a hose connected to the main body portion, wherein the nozzle has a bottom portion facing the mattress, and the hose is connected to one side in a first direction and has the outlet at the other end on the other side in the first direction, wherein the bottom portion of the nozzle is detachable from the back portion of the main body portion, and when the nozzle is attached to the back portion, the bottom portion covers 80% or more of the back portion.

3. The drying device according to claim 1 or 2, wherein a direction perpendicular to the first direction when the nozzle is viewed from above is defined as a second direction, and the bottom portion has legs on both sides in the second direction.

4. The drying device according to claim 3, wherein the legs extend along the first direction.

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