Hot air blower

Abstract

Provided is a hot air blower in which a housing is unlikely to become high-temperature. A hot air blower is provided with: a first main body in which an air passage extending in a first direction is formed; and a second main body having an inner space connected to the downstream side of the air passage, and a blow-out opening provided outside an extended region in the inner space, the extended region being a virtual region for extending the air passage, the second main body including a wall portion located in the extended region, to which the air flowing from the air passage into the inner space blows, and to which the air flowing from the air passage into the inner space blows. The wall portion includes an inner wall portion on the inner space side and an outer wall portion separated from the inner wall portion.

Description

Technical Field

[0001] The invention relates to a hot air blower. Background Art

[0002] Hair dryers are widely used and include a fan and a heater to send warm air to hair to dry the hair.

[0003] For example, Japanese Patent Application Laid-Open No. 8-47415 discloses a hair dryer in which a fan, a heater, and an air outlet are arranged in a straight line. Summary of the invention

[0004] In recent years, in order to improve the operability of the hair dryer, a hair dryer has been proposed in which a motor and / or a heater are stored in a grip portion that is held by the user to reduce the size of the head. In such a hair dryer, the fan, the heater, and the blow-out port are not arranged in a straight line, so the warm air needs to contact the wall inside the housing to change the wind direction, and the housing is prone to become hot.

[0005] An object of one embodiment of the present invention is to realize a hot air blower in which a casing is unlikely to reach a high temperature.

[0006] In order to solve the above-mentioned problem, a hot air blower of one embodiment of the present invention comprises: a first shell, which forms an air path extending along a first direction; and a second shell, which has an internal space connected to the downstream side of the air path, and a blow-off outlet arranged outside an extension area in the internal space, wherein the extension area is a virtual area that extends the air path, and the second shell includes a wall portion, which is located in the extension area, and the wind flowing from the air path to the internal space blows onto the wall portion, and the wall portion includes an inner wall portion on the internal space side and an outer wall portion separated from the inner wall portion.

[0007] In order to solve the above-mentioned technical problems, a hot air blower involved in one aspect of the present invention comprises: a shell, which forms an air path extending in a first direction; and an electric blower, which is accommodated in the air path, and the air path has a blow-out port on its downstream side, and the blow-out port is open in a second direction different from the first direction, and the shell includes a wall portion at the downstream end of the air path, and the wall portion guides the wind toward the blow-out port, and the wall portion includes an inner wall portion on the air path side and an outer wall portion separated from the inner wall portion.

[0008] According to one aspect of the present invention, a hot air blower in which a casing is unlikely to reach a high temperature is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a front view which shows the appearance of the hair dryer of this embodiment. Figure 2 yes Figure 1AA cross-sectional view of a hair dryer in FIG. Figure 3 This is a block diagram showing the configuration of the main parts of the hair dryer. Figure 4 It is a front view showing the details of the blowing part. Figure 5 yes Figure 2 BB cross-sectional view of the second body in FIG. Figure 6 yes Figure 2 CC cross-sectional view of the second body in. DETAILED DESCRIPTION

[0010] [Implementation Method] (Hair dryer) In the present disclosure, a hair dryer whose housing is unlikely to reach a high temperature is realized. First, the hair dryer of the present disclosure is described. In the present invention, "hair dryer" refers to all devices that can dry hair using gas. Therefore, the hair dryer also includes a device that can dry hair and other items (such as pet hair) and a hot air blower used for purposes other than drying hair.

[0011] Hair dryers include, for example, devices that can dry hair and deliver air to the skin for skin care. The temperature of the air supplied by the hair dryer is not particularly limited. The hair dryer can supply, for example, at least warm air of warm air and cold air.

[0012] Here, "cold air" is not defined by absolute temperature, but refers to air supplied without substantially heating the supplied gas by a heating unit such as a heater. In contrast, "warm air" refers to air supplied by substantially heating the supplied gas by a heating unit such as a heater.

[0013] In addition, the type of gas is not particularly limited. An example of a preferred gas is air, nitrogen, oxygen, argon, and carbon dioxide. These gases are preferably gases within the temperature range in which the hair dryer is used.

[0014] (Overview of the hair dryer 1) Hereinafter, one embodiment of the present invention will be described in detail. Figure 1 It is a front view which shows the appearance of the hair dryer 1 of this embodiment. Figure 2 yes Figure 1 AA cross-sectional view of the hair dryer 1 in FIG.

[0015] like Figure 1As shown, the hair dryer (hot air blower) 1 includes: a substantially cylindrical first body (first housing) 10 held by a user; and a substantially cylindrical second body (second housing) 20 connected to one end of the first body 10. Furthermore, the shape of the first body 10 is not limited to a substantially cylindrical shape, and may be a polygonal column as long as it is a column, or may be a polygonal column with rounded corners. Furthermore, the shape of the second body 20 is not limited to a substantially cylindrical shape, and may be a polygonal column as long as it is a column, or may be a polygonal column with rounded corners.

[0016] In the drawings, the direction in which the first body 10 extends is referred to as the Z direction, the direction perpendicular to the Z direction is referred to as the X direction, and the direction perpendicular to the X direction and the Z direction is referred to as the Y direction.

[0017] The first body 10 is a shape extending in one direction (Z direction in the figure), and has a grip portion 14 for a user to hold. An operating portion 60 consisting of a plurality of switches is provided on the first body 10. In addition, one end of the first body 10 is connected to the second body 20, and the other end is connected to a power cable 80.

[0018] An air inlet 13 is disposed between the power cable 80 and the grip 14 of the first body 10. The cross-sectional shape of the air inlet 13 may be, for example, an elongated shape or a dot shape.

[0019] The second body 20 is a shape extending in a direction (in the figure, the Y direction) substantially orthogonal to the direction in which the first body 10 extends, and one end of the second body 20 is closed. A blow-out portion 25 is disposed at the other end of the second body 20. The blow-out portion 25 is provided with a plurality of blow-out ports 21. The gas passes through the blow-out portion 25 from the air inlet 13 via the first body 10 and the second body 20. In addition, the blow-out portion 25 is provided with a distance sensor 23, and the distance sensor 23 measures the distance to the object to be dried.

[0020] The distance sensor 23 is, for example, a TOF (Time Of Flight) sensor, and may include a light emitting unit and a light receiving unit formed of a semiconductor laser. However, the distance sensor 23 is not limited to the TOF sensor, and may be of other types. The distance sensor 23 measures the distance from the position where the distance sensor 23 is provided to an object (at least a part of the human body (e.g., scalp or hair) or a part) existing in front of the distance sensor 23. When the hair is dried by the hair dryer 1, the distance sensor 23 measures the distance to the hair. In addition, the distance sensor 23 may not be provided.

[0021] like Figure 2As shown, the hair dryer 1 is provided with at least one ion generating unit 24 and a cylindrical member 40 therein, and the ion generating unit 24 supplies ions to the air to be blown. The ion generating unit 24 is provided on the back side of the blow-out portion 25, and has an electrode 24A protruding into the hollow portion (the internal space 22 described later) inside the second body 20. In addition, the second body 20 has a hole 27 (see FIG. 27 ) for cleaning the electrode 24A of the ion generating unit 24 in the area facing the electrode 24A of the ion generating unit 24. Figure 5 ).

[0022] and, Figure 2 The figure 22 shows the general shape of the internal space with a single-dot chain line. Figure 2 The cross-sectional view schematically shows the overall shape of the internal space, including the space portion that is not originally shown.

[0023] The ion generating unit 24 is a unit that generates ions. The ion generating unit 24 can generate at least one of negative ions and positive ions, or both. For example, the ion generating unit 24 can also include a needle-shaped discharge electrode and a ring-shaped induction electrode surrounding the discharge electrode as the electrode 24A. In this case, a voltage can be applied between the discharge electrode and the induction electrode to generate corona discharge, and H can be generated around the discharge electrode. + (H2O)m and other positive ions and O 2- (H2O)n and other negative ions. The generated positive ions and negative ions are discharged together with the air blown out from the blower outlet 21. In addition, the ion generating unit 24 is not essential and may not be provided.

[0024] The ion generating unit 24 of one embodiment of the present invention is an example of a charged particle supply (generation) mechanism. And, the charged particle supply (generation) mechanism is a mechanism that supplies (generates) charged particles.

[0025] Charged particles refer to particles that are not electrically neutral, or active materials that are activated to a non-electrically neutral state. Charged particles are not limited to particles that have an electric charge, but also include particles such as atoms and molecules that have no electric charge but have unpaired electrons. Specifically, charged particles include, for example, ions with positive or negative charges, complexes of ions with positive or negative charges, free radicals, electrons, cations, and the like.

[0026] The charged particle supply (generation) mechanism may be, for example, a mechanism that supplies (generates) only one type of charged particles, or a mechanism that supplies (generates) multiple types of charged particles. The charged particle supply (generation) mechanism may, for example, supply (generate) both positive ions or complexes of positive ions (for example, complexes in which polar molecules such as water molecules are coordinated to positive ions) and negative ions or complexes of negative ions (for example, complexes in which polar molecules such as water molecules are coordinated to negative ions). The charged particle supply (generation) mechanism may, for example, supply (generate) only one of the complexes of positive and negative ions.

[0027] The tubular component 40 is a tubular component that is connected from the air passage 12 of the first main body 10 to the internal space 22 of the second main body 20. The tubular component 40 is formed of a flame retardant material. A heater 41 is accommodated in the tubular component 40. In addition, a tubular sheet not shown in the figure is provided between the tubular component 40 and the heater 41, and the tubular sheet is formed with flame retardant mica as the main raw material. In the present embodiment, the lengths of the first direction 15 (Z direction) of the tubular component 40, the heater 41 and the tubular sheet are substantially the same. In addition, the tubular component 40 and the tubular sheet are preferably longer than the heater 41. In addition, in the tubular component 40 and the heater 41, more than half of the total length (total length) of the first direction 15 of the tubular component 40 and the heater 41 is located in the internal space 22. The front end of the internal space 22 side of the tubular component 40 and the heater 41 is located at a position closer to the upper part than the midpoint of the Z direction of the internal space 22.

[0028] The area inside the first body 10 is referred to as an air passage 12. The air passage 12 may be formed from the position of the fan 11 (electric blower) housed in the first body 10, or may be formed from the air intake port 13. The air passage 12 is formed to extend along the first direction (Z direction) 15. In addition, the space formed inside the second body 20 is referred to as an internal space 22. The internal space 22 is connected to the downstream side of the air passage 12.

[0029] The cylindrical member 40 is accommodated in the partition wall portion 28 ( Figure 5 , 6 ). The partition wall 28 is formed in the second body 20 to match the outer shape of the tubular component 40. That is, the partition wall 28 is formed in a substantially cylindrical shape with openings at both ends. That is, the heater 41 is located between the air path 12 and the internal space 22 across the tubular component 40. In addition, as a result, the partition wall 28 is arranged around the heater 41 in the second body 20 in a manner extending the air path 12. Due to the presence of the tubular component 40, wind passes through the inside of the tubular component 40, and therefore, wind does not leak from the joint between the first body 10 and the second body 20 when air is supplied.

[0030] In the hair dryer 1, the air sucked from the air inlet 13 is blown by the fan 11, passes through the air passage 12, is heated by the heater 41, and then blows warm or cold air to the dried object from the blow-out port 21. A substrate is arranged inside the first body 10 between the fan 11 and the air inlet 13, and the substrate is cooled by the airflow generated by the rotation of the fan 11.

[0031] Figure 3 : is a block diagram showing the configuration of the main parts of the hair dryer 1. The operating unit 60 includes an on / off switch 61, a single-shot cold air switch 62, a mode change switch 63, and an air volume change switch 64. When the on / off switch 61 is turned on, power from the power cable 80 is supplied to each part of the hair dryer 1. When the on / off switch 61 is turned off, power supply to each part of the hair dryer 1 is stopped. In addition, the single-shot cold air switch 62 sends a signal notifying that it is operated to the control unit 50 each time it is operated. The control unit 50 alternately controls the heater 41 to be turned on / off each time it receives a signal from the single-shot cold air switch 62. In addition, it is also possible to alternately connect and disconnect the power from the power cable 80 to the heater 41 each time the single-shot cold air switch 62 is pressed without going through the control unit 50. The mode change switch 63 and the air volume change switch 64 send a signal notifying that they are operated to the control unit 50 each time they are operated. The control unit 50 controls the rotation speed of the fan 11, the heating value of the heater 41, the on / off of the ion generating unit 24, etc. according to the signals from the mode change switch 63 and the air volume change switch 64. In addition, each switch may be constituted by a button, for example. That is, the control unit 50 controls each part of the hair dryer 1 in a unified manner.

[0032] (Blowout part 25) Figure 4 1 is a front view showing details of the blow-out section 25. The blow-out section 25 is provided at the downstream front end portion facing the internal space 22 and blowing out the wind flowing through the air path 12. The blow-out section 25 is provided with three or more blow-out ports 21, and the blow-out ports 21 are connected to the internal space 22. Specifically, in the present embodiment, four blow-out ports 21 are provided. The centroids of each blow-out port 21 on the plane where the blow-out section 25 is arranged are indicated by centroids P1 to P4. In addition, the centroids are connected by straight lines. The four sides formed form a square, and the centroid of the square is set as the centroid C. The plane where the blowing part 25 is arranged is perpendicular to the flow direction of the gas in the blowing part 25. In addition, the area where the blowing port 21 does not exist in the blowing part 25 is a closed area where no gas is blown.

[0033] In addition, the blow-out port 21 opens toward a second direction 21a (Y direction) different from the first direction 15. The angle formed by the first direction 15 and the second direction 21a may also be 90°, but is not limited thereto. Therefore, the wind flowing in the wind path 12 in the first direction needs to bend toward the second direction. The structure used for this purpose is described below.

[0034] (Structure of the internal space 22) Figure 5 yes Figure 2 BB cross-sectional view of the second body 20 in FIG. Figure 6 yes Figure 2 The CC cross-sectional view of the second body 20 in FIG. A hollow portion, i.e., an internal space 22, is formed on the second body 20. The internal space 22 includes a curved surface having a gentle curvature change. This is to allow the flow of wind to change smoothly. In addition, as a result, air can be supplied with less pressure loss.

[0035] In addition, the air outlet 21 is provided outside the extended region 16 which is a virtual region formed by extending the air passage 12 in the internal space 22 .

[0036] The second body 20 has a wall portion 26 located in the extension area 16, and the extension area 16 is located on the extension line of the air path 12. The wind flowing from the air path 12 to the internal space 22 blows to the wall portion 26, and the wall portion 26 has an inner wall portion 26a and an outer wall portion 26b. In addition, it is not necessary for all the wind flowing from the air path 12 to the internal space 22 to blow to the wall portion 26, and the wall portion 26 guides the wind that does not blow to the wall portion 26 in a manner along the wall portion 26. The inner wall portion 26a is a wall facing the internal space 22. The outer wall portion 26b is a wall separated from the inner wall portion 26a toward the outside of the second body 20.

[0037] The inner wall portion 26a has an inclined portion 26e inclined toward a third direction 26d, and the angle of the third direction 26d is different from that of the first direction 15. That is, the inner wall portion 26a has an inclined portion 26e inclined at an angle relative to the first direction 15. Furthermore, an angle θ formed by the first direction 15 and the third direction 26d is an acute angle (θ<90°).

[0038] The inner wall portion 26a has an inclined portion 26e (first inclined portion) located on one side and an inclined portion 26e (second inclined portion) located on the other side across a plane 43 passing through the flow path center of the air path 12. The plane 43 is a YZ plane passing through the flow path center of the air path 12, and may be a plane on which the blow-out port 21 is symmetrically arranged with respect to the plane 43. In addition, on the inner wall portion 26a, a peak 26g is formed on the ridgeline where the two inclined portions 26e intersect. That is, the inclined portion 26e (first inclined portion) located on one side and the inclined portion 26e (second inclined portion) located on the other side form a peak 26g protruding toward the air path 12 side. In addition, the distance between the front end of the heater 41 on the internal space 22 side of the first direction 15 and the peak 26g is shorter than the distance between the front end and the joint between the first body 10 and the second body 20. Therefore, the hot air coming through the air path 12 is blown to the inner wall portion 26a where the peak 26g is formed without dissipating heat.

[0039] Therefore, the wind flowing through the wind path 12 is divided at the peak 26g and guided along the inclined portion 26e of the inner wall portion 26a to the third direction 26d of the left and right directions sandwiching the peak 26g. As a result, the wind can be guided to a desired direction along the internal space 22. In addition, because the angle formed by the first direction 15 and the third direction 26d is an acute angle, the wind flowing through the wind path 12 is not changed in direction suddenly, but can be changed in direction smoothly. Therefore, the wind can be guided with low pressure loss, and high-efficiency air supply can be achieved.

[0040] Furthermore, the wind guided by the inclined portion 26e passes through the internal space 22 and blows out from the blowout port 21. The internal space 22 is a curved surface that is convexly curved toward the outside. That is, the front end of the internal space 22 is closed, and it is in the shape of a semicircular shape of a tapered tube rolled into a ring. In addition, the blowout port 21 is an opening that is open to the front side of the internal space 22.

[0041] Therefore, the wind can be gently curved and guided by the internal space 22, so that the wind can be supplied to all the outlets 21 formed on the front surface of the second body 20 with low pressure loss. That is, the inner surface of the internal space 22 is formed to change gently on the curved surface, and the wind in the first direction 15 can be curved toward the third direction 26d and the second direction 21a with low pressure loss.

[0042] (Inner Shell Piece 29a and Outer Shell Piece 29b) The second body 20 includes an inner shell piece 29a and an outer shell piece 29b. The inner shell piece 29a is a member that forms the internal space 22 and includes the wall portion 26. As the inner shell piece 29a, a resin with high heat resistance (a flame retardant resin) is preferably used. The outer shell piece 29b is a member that is provided on the outer side of the inner shell piece 29a and constitutes the outer surface of the second body 20. The outer shell piece 29b is preferably made of an inexpensive resin that is easy to decorate, but is not limited thereto. For example, as the outer shell piece 29b, a resin with high heat resistance similar to that of the inner shell piece 29a may be used, an expensive resin that is easy to decorate may be used, or a resin other than these may be used.

[0043] Furthermore, the inner casing piece 29 a includes a curved surface that is connected to the inclined portion 26 e and is curved in a convex shape toward the outside of the internal space 22 .

[0044] (Space 26c) A space 26c may also be formed between the inner wall portion 26a and the outer wall portion 26b. Furthermore, the space 26c may not be hollow but may be filled with a heat insulating material, or may be formed with a protrusion or the like for assembling the second body 20. Furthermore, in consideration of heat insulation, it is preferred that no protrusion or the like is provided, but when a protrusion or the like is provided in the space 26c, it is preferred that the protrusion or the like is separated from the inner wall portion 26a forming the inclined portion 26e. Alternatively, the protrusion or the like may be separated from the outer wall portion 26b.

[0045] The space 26c forms a heat-insulating space in the wall 26. The wind blown by the fan 11 and heated by the heater 41 is blown to the wall 26 through the air path 12. Since the space 26c as a heat-insulating space is formed in the wall 26, the heat of the hot wind is difficult to be transferred to the top of the head of the outer shell sheet 29b in the extension area 16 located on the extension line of the air path 12 (the part of the outer shell sheet 29b that is in contact with the wall 26), so the top of the head can be reduced to a high temperature. Therefore, even if the user touches the top of the head, it can be reduced to feel hot. That is, the housing of the hair dryer 1 is difficult to reach a high temperature.

[0046] Furthermore, a through hole 26f may be formed to connect the space 26c to the outside. Through the through hole 26f, the space 26c is connected to the outside air, so that the temperature is balanced after heat exchange, and the heating in the space 26c can be reduced. As a result, the heating of the top of the head can be reduced. Figure 5 In the figure, the through hole 26f is shown, but when the through hole 26f is not provided, since the through hole 26f disappears, it is possible to realize a hair dryer with excellent design.

[0047] In addition, the area occupied by space 26c is preferably larger than the area occupied by air duct 12 when the hair dryer 1 is viewed from above. This is because if space 26c corresponding to the area directly blown and heated by hot air sent from air duct 12 exists, it is easy to ensure heat insulation.

[0048] (Assembly process of hair dryer 1) The steps of assembling the hair dryer 1 will be described. 1: Insert the inner shell piece 29 a into the outer shell piece 29 b to assemble the second body 20 . 2: An opening communicating with the partition 28 of the assembled second body 20 is formed in the outer shell piece 29b on the opposite side of the peak 26g in the Z direction of the second body 20, and a tubular member 40 having a heater 41 and a tubular sheet inserted therein is inserted into the opening. When the insertion of the tubular member 40 is completed, a portion of the tubular member 40 protrudes to the outside of the second body 20. 3: Insert the cylindrical member 40 protruding outside the second body 20 into the first body 10 . In this way, the hair dryer 1 is assembled.

[0049] In addition, the outer shell piece 29b may have a protruding portion that covers the portion of the inserted cylindrical member 40 that protrudes to the outside of the second body 20. In this case, the protruding portion of the outer shell piece 29b that covers the cylindrical member 40 that protrudes to the outside of the second body 20 is inserted into the first body 10.

[0050] Alternatively, the first body 10 may be assembled so as to cover the cylindrical member 40 protruding outside the second body 20 instead of inserting the cylindrical member 40 protruding outside the second body 20 into the first body 10 .

[0051] In addition, instead of inserting the protruding portion of the outer shell piece 29 b into the first body 10 , the first body 10 may be assembled so as to cover the protruding portion of the outer shell piece 29 b .

[0052] [Variation] (Angle θ between the first direction 15 and the third direction 26d) In the embodiment, the angle θ formed by the first direction 15 and the third direction 26d is described as an acute angle, but it is not limited to this. That is, the angle θ formed may also be an obtuse angle (180°>θ>90°). In this case, the wind flowing through the air path 12 is also guided to the direction of the inclined portion 26e (the third direction 26d). In addition, in this case, the peak 26g is not formed by two inclined portions 26e, but instead a valley portion recessed toward the air path 12 side is formed.

[0053] In this case, the space 26c at the portion where the pair of inclined portions 26e intersects is the thinnest. Instead, it is easy to make the volume of the space 26c larger than in the embodiment.

[0054] (Shape of the internal space 22) The internal space 22 is not limited to a shape symmetrical about the flow path center of the air path 12. For example, a flow path that rotates in one direction from the air path 12 in an annular shape may be formed as the internal space 22.

[0055] (Space between the inner shell piece 29a and the outer shell piece 29b) A space may be provided between the inner shell sheet 29a and the outer shell sheet 29b. In this case, the space functions as a space having a heat insulating function. In addition, a through hole for introducing external air may be provided in the space. In addition, the outer wall portion 26b of the wall portion 26 may not be provided, in which case the outer shell sheet 29b functions the same as the outer wall portion 26b.

[0056] [Variation] In the embodiment, the hair dryer 1 is disclosed in which the second body 20 is provided for the first body 10, but in this modification, the hair dryer formed of only a single body (casing) is targeted. The body is, for example, in the shape of a cylinder extending in the longitudinal direction, that is, the first direction, but is not limited to the cylindrical shape and may be in the shape of a polygonal cylinder.

[0057] An opening is formed at a portion of one end of the main body as an air intake port. The other end of the main body is closed. In addition, the main body has an air path in the length direction. The air path can be formed from the position of the fan (electric blower) housed in the main body, or from the air intake port. In addition, the air intake port is arranged on the upstream side relative to the fan.

[0058] In the wind path, there is a blow-out port opening toward a second direction different from the first direction at a position downstream of the fan. In addition, the main body includes a wall portion at the downstream end of the wind path that guides the wind to the blow-out port. The wind flowing along the wall surface constituting the peripheral surface of the wind path passes through the fan, the wall portion, and the blow-out port in sequence. The wall portion may also be a wall surface that is gently curved from the first direction to the second direction and covers the wind path. In addition, the wall portion may also be a plane orthogonal to the first direction, in which case the wall portion blocks the wind advancing in the first direction and discharges the wind from the second direction. In addition, the wind flowing along the wall surface of the wind path can be converted from the first direction to the second direction by blowing onto the wall portion. Similarly, the wind flowing in the wind path is converted from the first direction to the second direction in a manner along the shape of the wall portion. The wall portion includes an inner wall portion on the wind path side and an outer wall portion separated from the inner wall portion. That is, a wall portion is formed at the other end of the main body on which the air inlet is not formed.

[0059] As described above, in a hair dryer having a single cylindrical body, by providing a wall portion including an inner wall portion and an outer wall portion separated from the inner wall portion on the other end side of the body, even if the user touches the other end, it is possible to reduce the feeling of heat. In addition, since the hair dryer according to this modified example does not have the head in the above-mentioned embodiment, the hair dryer can be easily moved, and the effect of being able to easily dry hair is also achieved.

[0060] In addition, the shape of the blowout port may be a longitudinal shape or a circular shape. That is, the shape of the blowout port is not particularly limited. In addition, the number of the blowout ports may be one or more (for example, indivual).

[0061] 〔Summarize〕 The hot air blower involved in method 1 of the present invention comprises: a first shell, which forms an air path extending along a first direction; and a second shell, which has an internal space connected to the downstream side of the air path, and a blow-off outlet arranged outside an extension area in the internal space, wherein the extension area is a virtual area that extends the air path, and the second shell includes a wall portion, which is located in the extension area, and the wind flowing from the air path to the internal space blows onto the wall portion, and the wall portion includes an inner wall portion on the internal space side and an outer wall portion separated from the inner wall portion.

[0062] According to the above configuration, the wind passing through the wind path hits the wall of the second housing. Even if the wind is at a high temperature, since the wall has a double structure of an inner wall and an outer wall separated from the inner wall, a heat insulation effect can be obtained. Therefore, the outer side of the second housing corresponding to the wall is unlikely to reach a high temperature.

[0063] In addition to the above-mentioned aspect 1, the hot air blower according to aspect 2 of the present invention may be configured such that the air outlet opens in a second direction different from the first direction.

[0064] According to the above configuration, since the first direction and the second direction are different from each other, it is necessary to guide the hot air passing through the air passage in different directions.

[0065] Based on the above-mentioned method 1 or 2, the hot air blower of method 3 of the present invention can also be constructed as follows: the second shell has an inner shell piece and an outer shell piece, the inner shell piece forms the internal space and includes the wall portion, and the outer shell piece is arranged on the outside of the inner shell piece to constitute the outer surface of the second shell.

[0066] According to the above configuration, the inner shell sheet that contacts only the internal space at a high temperature is formed of a material with high heat resistance, and the outer shell sheet whose temperature is lower than that of the inner shell sheet can be formed of a material with low heat resistance. Therefore, in addition to reducing costs, a material that is easy to decorate can be used for the outer shell sheet, thereby realizing a hot air blower with excellent design.

[0067] In the above way In addition to any one of the above, the hot air blower according to aspect 4 of the present invention may be configured such that: the inner wall portion has an inclined portion inclined at an angle with respect to the first direction.

[0068] According to the above configuration, the wind flowing through the wind path is guided in the direction of the inclined portion by the inclined portion of the inner wall portion. Therefore, the wind can be guided in a desired direction.

[0069] Based on the above-mentioned method 4, the hot air blower of method 5 of the present invention can also be constructed as follows: the inclined portion includes a first inclined portion and a second inclined portion, the first inclined portion is located on one side of the plane passing through the center of the flow path of the air path, and the second inclined portion is located on the other side.

[0070] According to the above configuration, since the two inclined portions are provided in different directions, the wind flowing through the air passage can be divided into two directions for blowing.

[0071] In accordance with a sixth aspect of the present invention, in addition to the fifth aspect, the hot air blower may be configured such that the first inclined portion and the second inclined portion form a peak that protrudes toward the air passage side.

[0072] According to the above configuration, the wind flowing in the wind path is divided by the peak portion and guided along the two inclined portions. In addition, since the portion formed between the two inclined portions becomes the peak portion, the wind flowing in the wind path does not change direction suddenly, but can change direction smoothly. Therefore, the wind can be guided with low pressure loss, and high-efficiency air supply can be achieved.

[0073] Based on any one of the above-mentioned methods 1 to 6, the hot air blower of method 7 of the present invention can also be constructed as follows: the second shell includes a curved surface, the curved surface is connected to the inclined portion, and is curved in a convex shape toward the outside of the internal space.

[0074] According to the above configuration, the internal space is formed as a curved surface that curves convexly toward the outside, so that the wind flowing smoothly in the internal space can be bent and guided. Therefore, the wind can be easily guided to the plurality of outlets.

[0075] Based on any one of the above-mentioned aspects 1 to 7, the hot air blower of aspect 8 of the present invention may be configured such that: the wall portion has a through hole, and the through hole connects the space formed by the inner wall portion and the outer wall portion to the outside.

[0076] According to the above configuration, the space in the wall portion communicates with the outside of the hot air blower through the through hole, so that the air in the space exchanges heat with the low-temperature air outside. Therefore, it is possible to suppress the temperature rise in the space and exert high heat insulation performance.

[0077] The hot air blower of method 9 of the present invention comprises: a shell, which forms an air path extending in a first direction; and an electric blower, which is accommodated in the air path, and the air path has a blow-out port on its downstream side, and the blow-out port opens in a second direction different from the first direction, and the shell includes a wall portion at the downstream end of the air path, and the wall portion guides the wind toward the blow-out port, and the wall portion includes an inner wall portion on the air path side and an outer wall portion separated from the inner wall portion.

[0078] According to the above configuration, the wind blows against the wall of the housing. Even if the wind is at a high temperature, since the wall has a double structure of an inner wall and an outer wall separated from the inner wall, a heat insulation effect can be obtained. Therefore, the outer side of the housing corresponding to the wall is unlikely to reach a high temperature.

[0079] [Additional Notes] The present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope of the claims. The embodiments obtained by appropriately combining the technical solutions disclosed in the embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in the embodiments.

Claims

1. A hot air blower, characterized in that: have: A first housing is formed with an air passage extending along a first direction; and a second housing having an inner space connected to a downstream side of the air passage, and a blow-out port provided in the inner space outside an extended area, wherein the extended area is a virtual area extending the air passage, The second housing includes a wall portion, the wall portion is located in the extension area, and the wind flowing from the wind path into the internal space blows onto the wall portion. The wall portion includes an inner wall portion on the inner space side and an outer wall portion separated from the inner wall portion.

2. The hot air blower according to claim 1, characterized in that: The air outlet opens toward a second direction different from the first direction.

3. The hot air blower according to claim 2, characterized in that: The second shell includes an inner shell piece that forms the internal space and includes the wall portion, and an outer shell piece that is provided outside the inner shell piece and constitutes an outer surface of the second shell.

4. The hot air blower according to any one of claims 1 to 3, characterized in that: The inner wall portion has an inclined portion, and the inclined portion is inclined at an angle with respect to the first direction.

5. The hot air blower according to claim 4, characterized in that: The inclined portion includes a first inclined portion and a second inclined portion, the first inclined portion being located on one side across a plane passing through the flow path center of the air path, and the second inclined portion being located on the other side.

6. The hot air blower according to claim 5, characterized in that: The first inclined portion and the second inclined portion form a peak portion protruding toward the air passage side.

7. The hot air blower according to claim 6, characterized in that: The second shell includes a curved surface, which is connected to the inclined portion and is curved into a convex shape toward the outside of the internal space.

8. The hot air blower according to claim 1 or 2, characterized in that: The wall portion has a through hole that allows a space formed by the inner wall portion and the outer wall portion to communicate with the outside.

9. The hot air blower according to claim 1, characterized in that: The second shell includes an inner shell piece that forms the internal space and includes the wall portion, and an outer shell piece that is provided outside the inner shell piece and constitutes an outer surface of the second shell.

10. The hot air blower according to claim 4, characterized in that: The second shell includes a curved surface, which is connected to the inclined portion and is curved into a convex shape toward the outside of the internal space.

11. A hot air blower, characterized in that: have: a housing formed with an air path extending along a first direction; and an electric blower housed in the wind path, The air passage has a blowout port on its downstream side, the blowout port opening toward a second direction different from the first direction, The housing includes a wall portion at a downstream end of the air passage, the wall portion guiding the wind toward the blowout port, The wall portion includes an inner wall portion on the air passage side and an outer wall portion separated from the inner wall portion.

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