JP2018023754A - Hair dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair dryer for drying hair using an infrared ray, capable of reducing ventilation resistance while suppressing reduction in reflection efficiency.SOLUTION: A hair dryer comprises in a dry air passage 5: a blowing fan 9; a motor 10; a heat source 11; and a reflector 12. The reflector 12 has a reflection part 20 which is provided so as to surround the periphery of the heat source 11 and reflects an infrared ray radiated from the heat source 11 to an outlet 4 side. The reflection part 20 has at least one ventilation slit 22 through which dry air is made to pass from an upstream side to a downstream side of the dry air passage 5. Accordingly, even when the reflector 12 is increased in size for the purpose of improving the reflection efficiency, the dry air can pass through the ventilation slit 22 to the downstream side of the reflector 12, thereby enabling reduction in ventilation resistance while suppressing reduction in the reflection efficiency.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hair dryer for drying hair or the like using infrared rays emitted from a heat source in addition to drying air heated by a heat source.

  This type of hair dryer is known, for example, from US Pat. The blower of Patent Document 1 includes a heater (heat source) covered with a far-infrared ceramic and a reflecting mirror (reflector) inside a cylindrical housing (dry air passage). A fan for blowing air and a motor for driving the fan are disposed upstream of the heater and the reflecting mirror. The reflecting mirror is formed in a bowl shape surrounding the heater, and the infrared rays radiated from the heater are reflected to the front opening side of the cylindrical housing by the inner surface of the reflecting mirror.

JP-A-5-168518

  In this type of hair dryer, it is preferable to provide a reflector as large as possible in order to efficiently reflect infrared rays toward the outlet. However, in the blower of Patent Document 1, when a large reflecting mirror is provided, the cross-sectional area in the cylindrical housing that can be ventilated is reduced by that amount, and thus the ventilation resistance is increased in the reflecting mirror portion. Moreover, when ventilation resistance increases, it is inevitable that the air volume of the dry wind which blows with a fan and blows off from a front opening part falls. Therefore, although the hair can be accurately dried by infrared rays, the drying by the drying air is not sufficiently performed by the amount of the air volume, and drying takes time. Further, in the blower of Patent Document 1 including a reflecting mirror formed in a bowl shape, since the infrared rays reflected on the extension line at the center of the front opening converge, the hair is locally heated at the time of drying, which is excessive for the user. There is a risk of giving a feeling of heat.

An object of the present invention is to provide a hair dryer that can reduce ventilation resistance while suppressing reduction in reflection efficiency in a hair dryer that uses infrared rays to dry hair and the like.
An object of the present invention is to provide a hair dryer that avoids local convergence of infrared rays reflected by a reflector, eliminates local heating of the hair during drying, and can be used comfortably by the user. It is in.

  The hair dryer of the present invention has a blower fan 9, a motor 10 that drives the blower fan 9, a heat source 11 that emits infrared rays while generating heat, and an infrared ray in a dry air passage 5 from the suction port 3 to the blower outlet 4. And a reflector 12 for reflection. The reflector 12 is provided so as to surround the periphery of the heat source 11, and includes a reflection unit 20 that reflects infrared rays radiated from the heat source 11 toward the outlet 4. The reflecting portion 20 is provided with at least one ventilation slit 22 through which the drying air passes from the upstream side to the downstream side of the drying air passage 5. Note that the ventilation slit 22 in the present invention is a concept including a slit made of one end, a slit having an elongated opening, or a slit made of a continuous annular opening, and the maximum length of the ventilation slit 22 and the ventilation slit. It means a slit having a maximum length / average width of 2 or more, which is a ratio of 22 average widths.

  The reflection unit 20 includes at least two reflection plates 21 that extend outwardly from the base portion 19 of the reflector 12 toward the outlet 4. The adjacent edge portions 24 and 24 in the circumferential direction of the adjacent reflectors 21 and 21 are positioned in a state where they are shifted in the radial direction from the inside or outside in the radial direction or from the inside and outside in the radial direction when viewed from the side facing the reflector 12. By doing so, the ventilation slit 22 is formed between the edge portions 24 and 24.

  When viewed from the side facing the reflector 12, it is possible to adopt a form in which the edge surfaces 25, 25 of the circumferential edges 24, 24 of the adjacent reflectors 21, 21 are located on the same line.

  When viewed from the side facing the reflector 12, it is possible to adopt a form in which the circumferential edges 24, 24 of the adjacent reflectors 21, 21 overlap inside and outside.

  A plurality of reflectors 21 formed in the same shape are arranged at equal angular intervals around the heat source 11 to form the reflector 20 in a windmill shape. The reflector 21 is provided so that the virtual center axis P passing through the center in the circumferential direction of each reflector 21 does not intersect at the center of the dry air passage 5 when viewed from the side facing the reflector 12. The virtual central axis P referred to here is a central axis that passes through the center in the circumferential direction of the reflector 21 and is orthogonal to the reflector 21 when viewed from the side facing the reflector 12, as shown in FIG. Means.

  The reflecting plate 21 is formed in a partially rotating paraboloid shape, and the concave curved surface faces the heat source 11.

  The reflecting portion 20 is configured by an umbrella-shaped reflecting plate 21 that spreads in the direction of the air outlet 4. From the middle portion of the reflecting plate 21 to the leading edge or the base end edge of the reflecting plate 21. It is possible to adopt a form in which a plurality of ventilation slits 22 are formed radially. The “umbrella shape” herein refers to a shape that expands toward the tip, and includes a mortar shape, a bowl shape with a uniform curvature, or a paraboloid shape.

  The reflecting portion 20 is configured by an umbrella-shaped reflecting plate 21 that spreads in the direction of the air outlet 4, and a plurality of ventilation slits 22 penetrating the middle portion of the reflecting plate 21 are formed in the reflecting portion 20 in the circumferential direction. It can take the form which is done.

  The length dimension of the ventilation slit 22 as viewed from the side facing the reflector 12 is preferably formed to be ¼ or more of the diameter dimension of the circle circumscribing the outer shape of the reflecting portion 20.

  The reflecting unit 20 includes a reflecting plate 21 including an umbrella-shaped reflecting umbrella 45 that spreads in the direction of the air outlet 4 and a reflecting ring 46 that is arranged around the reflecting umbrella 45 at a predetermined interval in a circular manner. The reflecting ring 46 is configured such that the majority of the reflecting ring 46 protrudes in the direction of the outlet 4 from the leading edge of the reflector 45. The reflector 45 and the reflector ring 46 are integrally formed by a plurality of bridge walls 47 that bridge the portions where both the opposite sides 45 and 46 are opposed to each other, and a ventilation slit is formed between the reflector 45 and the reflector ring 46. A form in which a plurality of 22 are formed can be employed.

  The projected area S1 of the reflector 12 as viewed from the side facing the reflector 12 is preferably set to 75% or more of the projected area S2 defined by the outer edge of the reflector 12.

  The reflection unit 20 includes an umbrella-shaped first reflector 51 disposed on the upstream side of the dry air passage 5 and a cylindrical second reflector 52 disposed on the downstream side of the dry air passage 5. When viewed from the side facing the reflector 12, the inner edge shape of the second reflector 52 is formed larger than the outer edge shape of the first reflector 51, and the outer edge of the first reflector 51 and the second reflector 52. A form in which a continuous annular ventilation slit 22 is formed between the inner edge and the inner edge can be employed. The outer edge of the first reflector 51 means the outer edge of the downstream end portion of the dry air passage 5, and the inner edge of the second reflector 52 means the inner edge of the upstream end portion of the dry air passage 5. Means.

  A first reflecting surface 55 that reflects incident infrared rays toward the outlet 4 is provided on the inner surface of the first reflector 51 on the upstream side of the dry air passage 5. A second reflecting surface 56 that reflects incident infrared rays toward the first reflecting surface 55 side is provided on the inner surface of the second reflector 52 or the first reflector 51 and the second reflector 52.

  When viewed from the side facing the reflector 12, the inner edge shape of the second reflector 52 is preferably formed to be similar to the outer edge shape of the first reflector 51.

  The second reflector 52 is preferably formed in a tapered tube shape that narrows toward the downstream side of the dry air passage 5.

  An air intake 61 for introducing air from the outside to the inside of the drying air passage 5 is provided. A flow path dividing cylinder 64 is provided in the latter half of the dry air passage 5. An inner primary air flow path 62 for flowing the dry air fed by the blower fan 9 through the dry air passage 5, and an outer secondary air flow path 63 for flowing the secondary air introduced from the air intake 61. Then, the flow is divided by the flow path dividing cylinder 64.

  It is preferable to arrange a light shielding filter 58 that blocks visible light at the downstream end of the first reflector 51 in the dry air passage 5.

  In the hair dryer of the present invention, at least one ventilation slit 22 that allows the drying air to pass from the upstream side to the downstream side of the drying air passage 5 is provided in the reflecting portion 20 of the reflector 12 that reflects infrared rays. Thus, according to the reflector 12 provided with the ventilation slit 22, it is possible to pass the drying air to the downstream side of the reflector 12 through the ventilation slit 22. Thereby, even if the reflector 12 is enlarged for the purpose of improving the reflection efficiency, the ventilation resistance can be reduced, and a sufficient amount of drying air necessary for drying the hair is blown from the outlet 4. Can be put out. As described above, according to the present invention, in a hair dryer that performs drying using infrared rays, it is possible to provide a hair dryer that can reduce ventilation resistance while suppressing reduction in reflection efficiency.

  In the reflector 12 including at least two reflectors 21, the adjacent circumferential edges 24 and 24 are viewed from the side facing the reflector 12 in the radial direction or in the radial direction and in the circumferential direction. The ventilation slit 22 was formed between the edge parts 24 and 24 by making it position in the state shifted | deviated. According to this, when the drying air passes through the ventilation slit 22, it is possible to cause the drying air to flow in the swirl direction. Thereby, the straightness of the drying air blown out from the blower outlet 4 is improved and the drying air is prevented from diffusing, and the drying air can be accurately fed to the hair.

  When the edge surfaces 25 and 25 of the circumferential edge portions 24 and 24 of the adjacent reflectors 21 and 21 are located on the same line as viewed from the side facing the reflector 12, the heat source 11 faces the reflector 20. The infrared rays radiated in this manner can be prevented from leaking to the outer surface side of the reflecting plate 21 through the ventilation slit 22. Thereby, the fall of the infrared reflective efficiency by providing the ventilation slit 22 in the reflection part 20 can be prevented, and all the infrared rays radiated | emitted toward the reflection part 20 can be reflected to the blower outlet 4 side. Further, since the inner wall surface of the drying air passage 5 is not heated by the infrared rays leaking to the outer surface side of the reflecting plate 21, it is possible to prevent abnormal overheating and thermal damage of the hair dryer. Furthermore, since it is not necessary to provide a separate member for preventing leakage of infrared rays, the structure of the reflecting portion 20 can be simplified, so that an increase in ventilation resistance due to a complicated structure can be eliminated.

  When the circumferential edges 24 and 24 of the adjacent reflectors 21 and 21 overlap with each other when viewed from the side facing the reflector 12, infrared rays are transmitted through the ventilation slit 22 in the same manner as described above. It is possible to prevent leakage to the outer surface side, and it is possible to eliminate an increase in ventilation resistance due to a complicated structure. In addition, the adjacent edges 24 and 24 are overlapped on the inside and outside, so that the drying air is guided at the overlapping portion, and the flow in the swirling direction can be surely generated in the drying air that has passed through the ventilation slit 22. Thereby, the straightness of the drying air blown from the outlet 4 is further improved, and the drying air is prevented from diffusing, so that the drying air can be more accurately supplied to the hair.

  When a plurality of reflecting plates 21 formed in the same shape are arranged at equiangular intervals around the heat source 11 and the reflecting part 20 is formed in a windmill shape, the circumferential direction of the drying air passage 5 is changed to dry air that has passed through the ventilation slit 22 Thus, the flow in the uniform swirling direction can be generated, so that the straightness of the drying air blown from the outlet 4 can be further improved, and the drying air can be supplied to the hair more accurately. Further, the reflection plate 21 is provided so that the virtual center axis P passing through the center in the circumferential direction of each reflection plate 21 does not intersect at the center of the dry air passage 5 when viewed from the side facing the reflector 12. According to this, far-infrared rays reflected by each reflecting plate 21 can be reflected in a wide range toward the space outside the blower outlet 4, so that the hair is locally heated when the hair is dried, The user can comfortably use the hair dryer without feeling excessive heat.

  When the reflecting plate 21 is formed in a partially rotating paraboloid shape and its concave curved surface faces the heat source 11, infrared rays reflected on the edge 24 side in the circumferential direction of the reflecting plate 21 are reflected at the outlet 4. Infrared light can be efficiently reflected to the space outside the air outlet 4 while suppressing reflection in a state of diffusing to the outside space. Therefore, when the hair is dried, the infrared rays can be accurately reflected toward the hair to shorten the drying time.

  The reflecting part 20 is configured by an umbrella-like reflecting plate 21 that spreads in the direction of the air outlet 4, and a plurality of ventilating slits 22 that extend from the middle part of the reflecting plate 21 to the leading edge or the base end edge of the reflecting plate 21 are radially provided. Individually formed. According to this, for example, when the reflector 12 is made of a metal material such as aluminum, the metal plate material is subjected to press work to obtain an umbrella-shaped blank material, and then the blank material is further subjected to press work. The reflector 12 can be manufactured by forming the ventilation slit 22. Moreover, since the ventilation slit 22 has reached the edge of the reflector 21, the reflector 12 can be formed by forming a ventilation slit 22 by cutting a blank material having an umbrella-like appearance using a milling cutter or an end mill. Can be manufactured. Therefore, coupled with the fact that the reflector 21 is formed in a simple shape, the reflector 12 can be manufactured easily and inexpensively, so that the manufacturing cost of the hair dryer can be reduced.

  The reflection part 20 was comprised with the umbrella-shaped reflecting plate 21 extended toward the direction of the blower outlet 4, and the several ventilation slit 22 which penetrates the middle part of the reflecting plate 21 was formed in the reflection part 20 in the circumferential direction. According to this, for example, when the reflector 12 is made of a metal material such as aluminum, the metal plate material is subjected to press work to obtain an umbrella-shaped blank material, and then the blank material is further subjected to press work. The reflector 12 can be manufactured by forming the ventilation slit 22. Moreover, since the ventilation slit 22 is penetrating, the reflector 12 can also be manufactured by forming a ventilation slit 22 by cutting a blank material having an umbrella-like appearance using a milling cutter or an end mill. Therefore, coupled with the fact that the reflector 21 is formed in a simple shape, the reflector 12 can be manufactured easily and inexpensively, so that the manufacturing cost of the hair dryer can be reduced. In addition, when one end of the ventilation slit 22 reaches the leading edge or the base edge of the reflecting plate 21 as described above, the structural strength of the reflecting portion 20 may be reduced. However, in the case of the ventilation slit 22 penetrating the midway part, there is an advantage that a reduction in the structural strength of the reflection part 20 can be avoided.

  When viewed from the side facing the reflector 12, the length of the ventilation slit 22 is formed to be 1/4 or more of the diameter of the circle circumscribing the outer shape of the reflecting portion 20, which is necessary to reduce the ventilation resistance. A ventilation slit 22 having a large size can be formed, and a sufficient amount of drying air is passed through the ventilation slit 22 to the downstream side of the reflector 12 to ensure that the drying air having an air volume necessary for drying is blown out. 4 can be blown out.

  The reflecting portion 20 includes a reflecting plate 21 including a reflecting umbrella 45 and a reflecting ring 46, and the majority of the reflecting ring 46 on the tip side protrudes in the direction of the outlet 4 from the tip edge of the reflecting umbrella 45. . According to this, since the reflecting portion 20 is configured by discontinuously forming the reflector 45 and the reflecting ring 46, the infrared reflection modes of both 45 and 46 are individually set with a relatively high degree of freedom. it can. In addition, the portion where the reflecting umbrella 45 and the reflecting ring 46 are opposed to each other is integrated by a plurality of bridging walls 47, so that the ventilation defined by the bridging wall 47 is between the reflecting umbrella 45 and the reflecting ring 46. A slit 22 can be provided. Accordingly, it is possible to provide a hair dryer including the reflector 12 in which the ventilation slit 22 can be easily provided while freely setting the convergence or diffusion state of the reflected infrared rays.

  When viewed from the side facing the reflector 12, the projected area S1 of the reflector 12 is set to 75% or more of the projected area S2 defined by the outer edge of the reflector 12, which is large enough to improve the infrared reflection efficiency. The reflective part 20 can be formed. Moreover, since the freedom degree of the shape of the reflecting plate 21 improves, the reflecting plate 21 of the shape which can reflect infrared rays more efficiently can be provided easily.

  The reflector 20 is configured by an umbrella-shaped first reflector 51 and a cylindrical second reflector 52, and viewed from the side facing the reflector 12, the outer edge of the first reflector 51 and the second reflector When the continuous annular ventilation slit 22 is formed between the inner edge and the inner edge, the infrared reflection modes of the first and second reflectors 51 and 52 can be individually set with a relatively high degree of freedom. Therefore, the reflector 12 can freely set the reflecting direction of the infrared rays, the convergence of the reflected infrared rays, or the diffusion state.

  Provided on the inner surface of the first reflector 51 is a first reflecting surface 55 that reflects incident infrared rays toward the blower outlet 4, and the second reflector 52, or the first reflector 51 and the second reflector 52. A second reflection surface 56 that reflects incident infrared rays toward the first reflection surface 55 is provided on the inner surface. According to such a reflection part 20, the illuminance of infrared rays in the irradiation range defined by the first reflection surface 55 can be improved. Specifically, when the first reflecting surface 55 and the second reflecting surface 56 are provided in the reflecting portion 20 as in the present invention, in addition to the infrared rays reflected by the first reflecting surface 55, the second reflecting surface 56 The infrared rays reflected toward the first reflecting surface 55 and reflected again by the first reflecting surface 55 are applied to the irradiation range defined by the first reflecting surface 55. As a result, the illuminance of infrared rays in the irradiation range of the first reflecting surface 55 can be improved, and therefore the infrared rays having sufficient illuminance necessary for drying can be applied to the hair even at a position away from the hair dryer. Can do.

  If the outer edge of the 1st reflector 51 and the inner edge of the 2nd reflector 52 are formed in a similar shape, the width dimension of the ventilation slit 22 formed between both 51 * 52 may be formed equally in the circumferential direction. it can. Thereby, since the drying air can be passed in a uniform state from the upstream side to the downstream side of the drying air passage 5, it is possible to blow out the drying air from the air outlet 4 with no uneven flow rate. Accordingly, it is possible to improve the straightness of the drying air blown from the blower outlet 4 and accurately feed the drying air to the hair.

  The second reflector 52 was formed in a tapered tube shape that narrows toward the downstream side of the dry air passage 5. According to such a second reflector 52, the outlet-side cross-sectional area inside the second reflector 52 is smaller than the inlet-side cross-sectional area, so that the flow velocity of the drying air that has passed through the inside of the second reflector 52 is increased on the outlet side. it can. Therefore, the straightness of the drying air blown from the outlet 4 can be further improved, and the drying air can be accurately fed to the hair.

  An inner primary air flow path 62 for flowing the primary air fed by the blower fan 9 through the dry air passage 5, and an outer secondary air flow path 63 for flowing the secondary air introduced from the air intake 61. Then, it was divided by a flow path dividing cylinder 64. According to this, since a layer of secondary air can be formed on the outer periphery of the primary air and two layers of dry air can be blown out from the blower outlet 4, the primary air diffuses outward in the layer of secondary air. It is possible to further improve the straightness of the drying air blown from the blower outlet 4.

  If a light blocking filter 58 that blocks visible light is disposed at the downstream end of the drying air passage 5 of the first reflector 51, for example, even when the heat source 11 is a halogen lamp that emits a large amount of visible light. The visible light emitted from the heat source 11 can be prevented from being directly observed. Therefore, the user can comfortably use the hair dryer without feeling dazzling due to the heat source 11.

It is a vertical side view of the hair dryer which concerns on Example 1 of this invention. It is a side view of the hair dryer which concerns on Example 1 of this invention. It is a perspective view of the reflector of the hair dryer which concerns on Example 1 of this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is explanatory drawing which shows the projection area of a reflector seen from the side facing a reflector. It is a figure for demonstrating the simulation of the infrared irradiation range using commercially available analysis software, (a) is explanatory drawing of the measuring method assumed in simulation, (b) and (c) show a simulation result. FIG. It is a vertical front view which shows the modification of the reflector which concerns on Example 1. FIG. It is CC sectional view taken on the line in FIG. It is explanatory drawing which shows the projection area of a reflector seen from the side facing a reflector. It is a vertical front view which shows the reflector of the hair dryer which concerns on Example 2 of this invention. It is the DD sectional view taken on the line in FIG. It is principal part sectional drawing which shows the modification of the reflector in Example 2. FIG. It is a vertical front view which shows another modification of the reflector in Example 2. FIG. It is the EE sectional view taken on the line in FIG. It is a vertical front view which shows the reflector of the hair dryer which concerns on Example 3 of this invention. It is an FF line end view in FIG. It is a vertical front view which shows the reflector of the hair dryer which concerns on Example 4 of this invention. It is a vertical front view which shows the reflector of the hair dryer which concerns on Example 5 of this invention. It is a vertical side view which shows the reflector of the hair dryer which concerns on Example 6 of this invention. It is the GG sectional view taken on the line in FIG. The reflector of the hair dryer which concerns on Example 7 of this invention is shown, (a) is a front view of a reflector, (b) is a vertical side view of a reflector. It is a front view which shows the modification of the reflector in Example 7. FIG. The reflector of the hair dryer which concerns on Example 8 of this invention is shown, (a) is a front view of a reflector, (b) is a vertical side view of a reflector. It is a front view which shows the modification of the reflector in Example 8. FIG. It is a front view which shows the reflector of the hair dryer which concerns on Example 9 of this invention. It is a vertical side view of the reflector which concerns on Example 9. FIG. It is a vertical side view of the hair dryer which concerns on Example 10 of this invention. It is a vertical side view which shows the reflector which concerns on Example 10. FIG. It is the HH sectional view taken on the line in FIG. It is explanatory drawing which shows the flow of the drying wind in the blower outlet vicinity of the hair dryer which concerns on Example 10. FIG. It is a vertical side view which shows the modification of the reflector in Example 10. FIG. It is a vertical side view which shows another modification of the reflector in Example 10. FIG.

Example 1 FIGS. 1 to 7 show Example 1 of a hair dryer according to the present invention. In the present embodiment, front and rear, left and right, and up and down follow the cross arrows shown in FIG. 2 and FIG. As shown in FIG. 2, the hair dryer includes a horizontally long main body case 1 and a grip 2 that is foldably connected to the lower back surface of the main body case 1. On the front surface of the grip 2, there is provided a slide type switch knob 102 for starting or stopping the operation of the hair dryer and for switching the hot / cold air mode.

  As shown in FIG. 1, a suction port 3 is provided at the rear end of the main body case 1, and an air outlet 4 is provided at the front end, and drying from the suction port 3 to the air outlet 4 is performed inside the main body case 1. An air passage 5 is formed. The passage cross section of the dry air passage 5 is formed in a perfect circle shape (see FIG. 4), and is set to have substantially the same diameter dimension from the inlet 3 to the outlet 4. A suction grill 6 made of punching metal is attached to the suction port 3 to prevent a part of hair or clothes from being sucked into the dry air passage 5. Further, a blow grill 7 made of a metal mesh is provided at the blow outlet 4 to prevent fingers and the like from entering the dry air passage 5.

  On the upstream side of the drying air passage 5, there are an axial flow fan 9, a motor 10 that drives the fan 9, a halogen lamp (heat source) 11 that emits infrared rays while generating heat, and the like from the upstream side to the downstream side. Arranged in the order of description. In addition, the halogen lamp 11 is equipped with a reflector 12 that reflects infrared rays emitted from the lamp 11. The motor 10 is assembled to a motor case 13 supported on the inner wall surface of the main body case 1, and a blower fan 9 is fixed to the output shaft of the motor 10. The motor case 13 is composed of an upstream rear case 14 and a downstream front case 15, both cases 14, 15 are both formed in a bottomed cylindrical shape, and cover the motor 10 so as to enclose the motor 10. It is integrated into a shape. A stepped shaft-shaped lamp socket 16 is fixed to the front wall of the front case 15, and the halogen lamp 11 is screwed into the lamp socket 16. Infrared rays refer to all electromagnetic waves having a wavelength longer than that of red light and shorter than that of millimeter-wave radio waves, and include those in the near infrared to far infrared wavelength region. The reflector 12 also reflects electromagnetic waves in the visible light region in addition to infrared rays.

  As shown in FIGS. 3 and 5, the reflector 12 is formed of an aluminum molded product that integrally includes a base portion 19 and a reflecting portion 20 that are formed in a ring shape. The reflector 12 is fixed between the motor 10 and the halogen lamp 11 with the base portion 19 being externally fitted to the small-diameter shaft portion of the lamp socket 16. The reflection unit 20 is provided so as to surround the halogen lamp 11, and includes a reflection plate 21 that reflects infrared rays radiated from the halogen lamp 11 toward the outlet 4 side on the inner surface thereof. Further, the reflecting portion 20 is provided with at least one ventilation slit 22 that allows the drying air to pass from the upstream side to the downstream side of the drying air passage 5.

  Specifically, the reflecting portion 20 includes four reflecting plates 21 extending from the base portion 19. The reflectors 21 are formed in the same shape, and are provided at equiangular intervals around the halogen lamp 11 from the front edge of the base portion 19. As shown in FIGS. 4 and 5, the circumferential edges 24 and 24 of the adjacent reflectors 21 and 21 are adjacent to each other, and the adjacent edges 24 and 24 are viewed from the side facing the reflector 12. The ventilation slit 22 is formed between the edge portions 24 and 24 by being positioned in a state of being shifted inward and outward in the radial direction. The ventilation slit 22 is provided from the middle part on the base end side of the reflection plate 21 and is formed so that the slit width dimension gradually increases from the upstream side to the downstream side of the drying air passage 5 to reflect the slit. Opened on the front end side of the portion 20. When viewed from the side facing the reflector 12, the ventilation slits 22 are formed linearly, and the four ventilation slits 22 are provided radially from the center side of the drying air passage 5 toward the inner wall surface side. ing. Moreover, the edge surface 25 * 25 of the circumferential edge part 24 * 24 of the adjacent reflecting plates 21 * 21 is provided so that it may be located on the same line. As shown in FIG. 5, the curvatures of the adjacent edges 24, 24 of each reflector 21 are substantially the same, and the front edge of each reflector 21 is on the same plane orthogonal to the dry air passage 5. Is located.

  As described above, the ventilation slit 22 is formed between the edge portions 24 and 24 by positioning the adjacent edge portions 24 and 24 in a state of being shifted inward and outward in the radial direction when viewed from the side facing the reflector 12. Then, when the drying air passes through the ventilation slit 22, a flow in the swirling direction can be generated in the drying air. Thereby, the straightness of the drying air blown out from the blower outlet 4 is improved and the drying air is prevented from diffusing, and the drying air can be accurately fed to the hair. Further, when the edge surfaces 25 and 25 of the circumferential edges 24 and 24 of the adjacent reflectors 21 and 21 are located on the same line as viewed from the side facing the reflector 12, the reflector from the halogen lamp 11 is reflected. It is possible to prevent infrared rays radiated toward 20 from leaking to the outer surface side of the reflecting plate 21 through the ventilation slit 22. Thereby, the fall of the infrared reflective efficiency by providing the ventilation slit 22 in the reflection part 20 is prevented, and all the infrared rays radiated | emitted toward the reflection part 20 can be reflected to the blower outlet 4 side. Moreover, since the inner wall surface of the drying air passage 5, that is, the main body case 1, is not heated by the infrared rays leaking to the outer surface side of the reflecting plate 21, abnormal overheating and thermal damage of the hair dryer can be prevented. Furthermore, since it is not necessary to provide a separate member for preventing leakage of infrared rays, the structure of the reflecting portion 20 can be simplified, so that an increase in ventilation resistance due to a complicated structure can be eliminated.

  As shown in FIG. 1, the reflecting plate 21 is formed in a partially rotating paraboloid shape, with its concave curved surface facing the halogen lamp 11, and the inner surface of the reflecting plate 21 is formed in a smooth three-dimensional curved surface shape. ing. Thus, when the reflecting plate 21 is formed in a partially rotating paraboloid shape and the concave curved surface faces the halogen lamp 11, the infrared rays reflected on the peripheral edge 24 side of the reflecting plate 21 are blown out. Infrared rays can be efficiently reflected to the space outside the blower outlet 4 while suppressing reflection in a state of diffusing to the space outside the air outlet 4. Therefore, when the hair is dried, the infrared rays can be accurately reflected toward the hair to shorten the drying time. The inner surface of the reflecting plate 21 is polished into a mirror surface in order to further improve the infrared reflection efficiency.

  The reflector 21 is provided so that the virtual center axis P passing through the center in the circumferential direction of each reflector 21 does not intersect at the center of the dry air passage 5 when viewed from the side facing the reflector 12. As shown in FIG. 4, the virtual center axis P is a center axis that passes through the center in the circumferential direction of the reflecting plate 21 and is orthogonal to the reflecting plate 21 on a plane orthogonal to the drying air passage 5. The central axis P is set so as to intersect at a plurality of points avoiding the center of the dry air passage 5. Thereby, each reflecting plate 21 is given a twist angle to the base portion 19, and the reflecting portion 20 is formed in a windmill shape. As described above, if the virtual center axis P does not intersect at one point, the infrared rays reflected by the respective reflectors 21 are reflected in a wide range toward the space outside the air outlet 4 so that the hair is locally applied when the hair is dried. Therefore, the user can comfortably use the hair dryer without feeling excessive heat. In addition, when the reflecting portion 20 is formed in a windmill shape, the drying air that has passed through the ventilation slit 22 can generate a uniform swirling flow in the circumferential direction of the drying air passage 5. The straightness of the wind is further improved, and the dry wind can be more accurately delivered to the hair.

  When viewed from the side facing the reflector 12, the length dimension of the ventilation slit 22 is preferably formed to be ¼ or more of the diameter dimension of the circle circumscribing the outer shape of the reflecting portion 20 (see FIG. 5). ). This is because if the diameter of the drying air passage 5 is less than ¼, the amount of the drying air passing through the ventilation slit 22 is insufficient. Furthermore, the length dimension of the ventilation slit 22 is preferably set to 1/3 or more of the diameter dimension of the drying air passage 5, and in this embodiment, the ventilation slit 22 is set to the dimension. Thus, when the length dimension of the ventilation slit 22 is formed to be 1/3 of the diameter dimension of the drying air passage 5, the ventilation slit 22 having a size necessary for reducing the ventilation resistance can be formed. A sufficient amount of drying air can be passed to the downstream side of the reflector 12 through the slit 22, and the amount of drying air necessary for drying can be reliably blown out from the outlet 4.

  As shown in FIG. 6, when viewed from the side facing the reflector 12, the projected area S <b> 1 of the reflector 12 with diagonal lattice hatching is 75% or more of the projected area S <b> 2 defined by the outer edge of the reflector 12. It is preferable to set to. This is because it is difficult to form the reflective portion 20 that can obtain sufficient reflection efficiency when the proportion of the projected area S2 is less than 75%. More preferably, it is optimal to be 80% or more. In this embodiment, the projection area S1 is set to 90% of the projection area S2. As described above, when the projected area S1 of the reflector 12 occupies 80% or more of the projected area S2, it is possible to form the reflecting portion 20 having a size sufficient to improve the infrared reflection efficiency. Moreover, since the freedom degree of the shape of the reflecting plate 21 improves, the reflecting plate 21 of the shape which can reflect infrared rays more efficiently can be provided easily.

  In the present embodiment, the projected area S <b> 2 defined by the outer edge of the reflector 12 is set to 80% of the passage sectional area of the dry air passage 5. Thus, a sufficient amount of dry air can be vented to the downstream side of the reflector 12 from between the outer edge of the reflector 12 and the inner surface of the dry air passage 5. When the ratio of the projected area S2 defined by the outer edge of the reflector 12 to the passage cross-sectional area of the dry air passage 5 exceeds 95%, the air flow resistance caused by the reflector 12 is excessively increased. This is because even when the ventilation slit 22 is provided in the portion 20, it is difficult to blow out a sufficient amount of dry air from the outlet 4.

  FIG. 7 shows the result of simulating the infrared irradiation range using commercially available analysis software operating on a personal computer. As shown in FIG. 7A, the irradiation range simulation is performed assuming a measurement method in which a measurement plate T is disposed approximately 30 cm in front of the outlet 4 and the infrared rays irradiated on the measurement plate T are measured. It was. In addition, it set so that the infrared rays irradiated directly on the measurement plate T from the halogen lamp 11 may be excluded, and a portion illuminated with a predetermined or higher illuminance was defined as an irradiation range. In addition to the reflector 12 of the present embodiment, the simulation was performed assuming a bowl-shaped reflector that does not include the ventilation slit 22 as a comparison target. In any reflector, the projected area S1 is set to 80% of the projected area S2, and the curvature of the reflecting plate 21 is set to be the same as much as possible.

  FIGS. 7B and 7C show the results of the simulation, and the range surrounded by the one-dot chain line in FIG. 7B is the irradiation range of the reflector 12 of this embodiment. In addition, the range surrounded by the two-dot chain line in FIG. 7C is the irradiation range of the reflector to be compared, and the range with the grid-like hatching shows the portion where the illuminance is very high compared to the surroundings. Yes. In both figures, the outlet 4 is indicated by a broken line. As can be seen from the simulation results, according to the reflector 12 of the present embodiment, reflection is performed so that the irradiation range is diffused wider than that of the bowl-shaped reflector. Further, it was found that there was no portion where the illuminance was very high, and infrared rays were reflected in a state where the illuminance did not converge locally. In addition, as a result of simulating the irradiation efficiency of the light irradiated to the measuring plate T together with the measurement of the irradiation range, the irradiation efficiency of the reflector 12 of this example and the reflector of the comparison object are both about 61% and almost the same. It was about. Here, “irradiation efficiency” refers to the ratio of the infrared rays emitted from the halogen lamp 11 being reflected by the reflector 12 and being applied to the irradiation range illuminated by a predetermined or higher illuminance.

  8 to 10 show modifications of the reflector 12 in the first embodiment. In this case, as shown in FIG. 8, each reflecting plate 21 is extended from the front end edge of the base portion 19 with the base end portion of the edge portion 24 of the reflecting plate 21 positioned on the outside being away from the base portion 19. did. Accordingly, the width dimension of the ventilation slit 22 is formed to have substantially the same dimension from the upstream side to the downstream side of the drying air passage 5 as shown in FIG. Also, as shown in FIG. 10, the projected area S1 of the reflector 12 is reduced by extending the base end portion of the edge 24 away from the base portion 19, and the projected area S1 of the reflector 12 is It is set to 85% of the projected area S2 defined by the outer edge of the reflector 12. As shown in FIG. 9, the front end edge of each reflector 21 is configured to be inclined with respect to a plane orthogonal to the drying air passage 5. Since others are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted. The same applies to the following description.

  As described above, when the base end portion of the edge portion 24 of the reflector 21 located on the outside is provided in a state separated from the base portion 19, the ventilation slit 22 can be formed larger, and a larger amount of dry air can be generated. It can pass through the ventilation slit 22 to the downstream side of the reflector 12. Therefore, the airflow resistance by the reflector 12 can be further reduced, and a sufficient amount of dry air necessary for drying the hair can be reliably blown out from the outlet 4.

  11 and 12 show Example 2 of the hair dryer according to the present invention. In this case, as shown in FIG. 11, when viewed from the side facing the reflector 12, the circumferential edges 24, 24 of the adjacent reflectors 21, 21 are positioned in a state where they are displaced in the radial direction from the inside and outside. Thus, the point that the reflector 12 is configured so that the reflecting plate 21 is provided so that the edge portions 24 and 24 overlap inside and outside is different from the first embodiment. The width dimensions of the edge portions 24 and 24 that overlap the inside and outside were gradually increased toward the front end side of the reflecting plate 21. Further, as shown in FIG. 12, the ventilation slit 22 is provided from the base end to the tip end of the reflection plate 21, and the dimension of the slit width gradually increases from the upstream side to the downstream side of the drying air passage 5. And is open on the front end side of the reflecting portion 20. As described above, when the adjacent edges 24 and 24 of the reflecting plate 21 are provided so as to overlap inside and outside, the infrared rays leak out to the outer surface side of the reflecting plate 21 through the ventilation slit 22 as in the first embodiment. In addition, the increase in ventilation resistance due to the complicated structure can be eliminated. In the present embodiment, the adjacent edge portions 24 and 24 are overlapped on the inside and outside, so that the drying air can be guided at the overlapping portion and a strong swirling flow can be generated by the drying air passing through the ventilation slit 22. . This further improves the straightness of the drying air blown from the outlet 4 and prevents the drying air from diffusing, so that the drying air can be supplied to the hair more accurately.

  In FIG. 13, the modification of the reflector 12 in Example 2 is shown. In this case, each reflecting plate 21 is formed so that the curvatures of the edge portions 24 and 24 overlapping inside and outside are different. Specifically, the curvature of the outer edge 24 is reduced and the curvature of the inner edge 24 is increased, so that the width dimension of the ventilation slit 22 is formed on the downstream side of the dry air passage 5. I did it. Accordingly, a larger amount of dry air can be passed through the air slit 22 to the downstream side of the reflector 12. In the present modification, the shape of the ventilation slit 22 can be freely set by simply changing the curvature of the edge 24 without greatly changing the structure of the reflector 12.

  14 and 15 show another modification of the reflector 12 in the second embodiment. In this case, as shown in FIG. 14, the width dimension of the edge portions 24, 24 that overlap the inside and outside is gradually reduced toward the tip of the reflecting plate 21. Further, as shown in FIG. 15, in the same manner as the modified example of the first embodiment, each reflecting plate 21 is in a state where the base end portion of the edge portion 24 of the reflecting plate 21 located on the outside is away from the base portion 19. The base portion 19 was extended from the front edge portion. As described above, the width dimension of the edge portions 24 and 24 that overlap the inside and outside that guide the drying air may change to small or large as it goes to the tip, or may be the same, and can take various forms. By changing the overlapping state of the edge portions 24 and 24, it is possible to change the strength and direction of the flow in the swirl direction generated in the dry wind.

  16 and 17 show Example 3 of the hair dryer according to the present invention. In this case, as shown in FIG. 16, the reflector 12 is configured by forming a partial spherical shell-like reflecting plate 21 by a group of a plurality of flat unit reflecting plates 30. As shown in FIG. 17, four unit reflectors 30 are provided in the radial direction of the dry air passage 5. Thus, the reflecting plate 21 does not have to be a spherical shell having a smooth three-dimensional curved inner surface, and is configured by a group of unit reflecting plates 30 having a flat plate shape, a two-dimensional curved surface shape, or a three-dimensional curved surface shape. You can also.

  FIG. 18 shows a fourth embodiment of the hair dryer according to the present invention. In this case, the reflector 20 is constituted by a single reflector 21, the edges 24 and 24 at both ends in the circumferential direction of the reflector 21 are adjacent to each other, and the ventilation slit 22 is formed to constitute the reflector 12. As described above, even with the single reflecting plate 21, the reflecting portion 20 including the ventilation slit 22 can be configured.

  FIG. 19 shows a fifth embodiment of the hair dryer according to the present invention. There, the reflector 12 was formed by forming the reflecting portion 20 with two reflecting plates 21 having different shapes. Since the curvature of the upper reflection plate 21 is larger than that of the lower reflection plate 21, the infrared rays reflected by the upper reflection plate 21 converge more than the infrared rays reflected by the lower reflection plate 21. Reflected in the state. Thus, by making the shape of the reflecting plate 21 different, it is possible to set various reflection modes instead of reflecting infrared rays uniformly.

  20 and 21 show Example 6 of a hair dryer according to the present invention. In this case, as shown in FIG. 20, the reflecting portion 20 is formed in a bowl shape, and the ventilation slit 22 is opened along the circumferential direction of the reflecting portion 20 in the reflecting portion 20 on the downstream side of the dry air passage 5 from the halogen lamp 11. The reflector 12 was formed by forming. As shown in FIG. 21, four ventilation slits 22 are formed at equal angular intervals. Since the ventilation slit 22 is formed downstream of the halogen lamp 11 in the drying air passage 5, the infrared rays emitted from the halogen lamp 11 are directly applied to the inner wall surface of the drying air passage 5 through the ventilation slit 22. Never happen. Thus, the ventilation slit 22 may be formed along the circumferential direction of the reflection part 20. Note that the ventilation slit 22 can be provided other than the reflection portion 20 on the downstream side of the dry air passage 5 from the halogen lamp 11. In this case, it is preferable to provide a cover for preventing infrared rays from being irradiated to the inner wall surface of the drying air passage 5 through the ventilation slit 22.

  In Examples 3 to 6 described above, the infrared rays radiated from the halogen lamp 11 toward the reflecting portion 20 are prevented from leaking to the outer surface side of the reflecting plate 21 through the ventilation slits 22. As in Examples 1 and 2, it is possible to prevent a reduction in infrared reflection efficiency and reflect all of the infrared rays emitted toward the reflecting portion 20 to the outlet 4 side. In addition, abnormal overheating and thermal damage of the hair dryer can be prevented, and further, the increase in ventilation resistance due to the complicated structure can be eliminated.

  In each of the above-described embodiments, the drying air is passed to the downstream side of the reflector 12 through the ventilation slit 22, and infrared rays are prevented from leaking to the outer surface side of the reflecting plate 21 through the ventilation slit 22. Thereby, even if the reflector 12 is enlarged for the purpose of improving the reflection efficiency, the ventilation resistance can be reduced, and a sufficient amount of drying air necessary for drying the hair is blown from the outlet 4. Can be put out. In addition, it is possible to prevent a reduction in infrared reflection efficiency in the reflection unit 20. Therefore, in a hair dryer that performs drying using infrared rays, it is possible to simultaneously solve the conflicting problems of improving the reflection efficiency and reducing the airflow resistance.

  FIG. 22 shows a seventh embodiment of the hair dryer according to the present invention. In this case, the reflector 12 is formed by pressing an aluminum plate material, and as shown in FIG. 22 (b), the reflecting portion 20 has a mortar shape (umbrella shape) that expands toward the outlet 4. It consists of a reflector 21 and an opening 40 is formed at the center thereof. Moreover, as shown to Fig.22 (a), the four cut slits 22 ventilating from the middle part of the reflecting plate 21 to the front-end edge of the reflecting plate 21 (downstream edge of the dry wind path 5) are radial. Is formed. The width dimension of the ventilation slit 22 is formed so as to gradually increase from the upstream side to the downstream side of the drying air passage 5. In the present embodiment, the peripheral edge of the opening 40 also serves as the base portion 19.

  In FIG. 23, the modification of the reflector 12 in Example 7 is shown. There, four cut slits 22 were formed radially from the middle part of the reflector 21 to the base edge of the reflector 21 (upstream edge of the drying air passage 5). Moreover, the width dimension of the ventilation slit 22 was formed in the substantially same dimension. The slit width may be formed so as to gradually increase or decrease toward the upstream side of the drying air passage 5.

  FIG. 24 shows Example 8 of the hair dryer according to the present invention. In this case, the reflector 12 is formed by pressing an aluminum plate material. As shown in FIG. 24B, the reflecting portion 20 has a mortar shape (umbrella shape) that expands in the direction of the outlet 4. It consists of a reflector 21 and an opening 40 is formed at the center thereof. Moreover, as shown to Fig.24 (a), the eight ventilation slits 22 which penetrate the middle part of the reflecting plate 21 back and forth are intermittently stamped and formed in the circumferential direction. The ventilation slit 22 is formed in an elongated opening extending along the radial direction, and is provided radially at the approximate center of the reflector 21 in the front-rear direction. The width dimension of the ventilation slit 22 is formed in substantially the same dimension. Also in the present embodiment, the periphery of the opening 40 also serves as the base portion 19 as in the seventh embodiment.

  In FIG. 25, the modification of the reflector 12 in Example 8 is shown. There, the ventilation slit 22 was formed in the shape of an elongate opening extending along the circumferential direction, and was provided in a circular shape substantially at the center of the reflection plate 21 in the front-rear direction. The width dimension of the ventilation slit 22 is formed in substantially the same dimension. In this modification, the ventilation slits 22 are formed in a single layer, but may be provided in multiple.

  In the manufacture of the reflectors 12 in Examples 7 and 8 and the respective modifications, first, the aluminum plate is subjected to drawing and punching using a press to obtain a blank having a conical appearance. Next, the blank 12 is punched by a press machine to form the ventilation slit 22 and the opening 40, whereby the reflector 12 can be obtained. Thus, coupled with the fact that the reflector 21 is formed in a simple shape, the reflector 12 can be manufactured easily and inexpensively, so that the manufacturing cost of the hair dryer can be reduced. The reflector 12 may be manufactured by punching an aluminum plate material into an outer shape including the ventilation slit 22 and the opening 40 with a press machine, and then drawing the same. Further, the ventilation slit 22 reaching the edge of the reflecting plate 21 or penetrating the reflecting plate 21 can also be formed by cutting using a milling cutter, an end mill or the like, so that the appearance is cut into a conical blank. The reflector 12 may be manufactured by processing.

  When one end of the ventilation slit 22 reaches the leading edge or the base edge of the reflecting plate 21 as in the seventh embodiment, the structural strength of the reflecting portion 20 may be reduced. However, in the case of the ventilation slit 22 penetrating the midway portion as in the eighth embodiment and the modification thereof, there is an advantage that a reduction in the structural strength of the reflecting portion 20 can be avoided.

  In the above-described Examples 7 and 8, and the respective modifications, a part of infrared rays radiated from the halogen lamp 11 toward the reflection unit 20 leaks to the outer surface side of the reflection plate 21 through the ventilation slit 22. Since the ratio of the ventilation slit 22 to the reflection plate 21 is small, the amount of infrared rays that leak out is small. In order to prevent the inner wall surface of the drying air passage 5 from being heated by the leaked infrared rays, for example, a metal heat insulating cylinder or the like may be attached to the inner wall surface of the drying air passage 5 facing the reflector 12. By attaching the heat insulating cylinder, it is possible to prevent the body case 1 from being directly irradiated with infrared rays, thereby preventing abnormal overheating and thermal damage of the hair dryer. In addition, you may form the reflecting plate 21 in said Example 7, 8 and each modification in the shape of a bowl with uniform curvature other than a mortar shape (umbrella shape), or a paraboloid shape.

  26 and 27 show Example 9 of a hair dryer according to the present invention. In this case, the reflecting section 20 includes a reflecting reflector 45 having an umbrella shape that extends in the direction of the air outlet 4, and a reflecting ring 46 that is arranged around the reflecting umbrella 45 at a predetermined interval in a circular manner. A plate 21 is provided. The reflector 45 is formed in a paraboloid shape, and the reflection ring 46 is formed in a ring shape that expands. The majority of the front end side of the reflection ring 46 is configured to protrude in the direction of the outlet 4 from the front end edge of the reflection umbrella 45, and the reflection umbrella 45 and the reflection ring 46 are arranged at equal angular intervals. Thus, the both 45 and 46 are integrally formed by six bridging walls 47 that bridge the portions facing the inside and outside. Thus, six ventilation slits 22 defined by the bridge wall 47 are provided between the reflector 45 and the reflection ring 46. The reflector 12 is made of an aluminum molded product, and a base portion 19 is integrally provided at the base end portion of the reflector 45. In addition, another reflection ring can be arrange | positioned outside the reflection ring 46, and a reflection ring can be provided in multiple numbers. In this case, a plurality of bridging walls 47 can be provided at opposing portions of the inner and outer reflecting rings 46 to integrally form the reflecting plate 21, and the ventilation slit 22 can also be provided between the inner and outer reflecting rings 46. .

  In the above-described embodiment 9, the reflecting portion 20 is configured by discontinuously forming the reflector 45 and the reflecting ring 46, so that the infrared reflection mode of both 45 and 46 is relatively high. Can be set individually. In addition, since the portions where the reflector 45 and the reflector ring 46 are opposed to each other are integrated by a plurality of bridge walls 47, the elongated shape defined by the bridge wall 47 between the reflector 45 and the reflector ring 46. An opening-shaped ventilation slit 22 can be provided. Accordingly, it is possible to provide a hair dryer including the reflector 12 in which the ventilation slit 22 can be easily provided while freely setting the convergence or diffusion state of the reflected infrared rays.

  Among the above-described embodiments, in the ventilation slit 22 opened on the downstream end side of the reflection portion 20, for example, the adjacent reflectors 21 and 21 on the downstream end side may be connected by a rib-like wall, By providing the rib wall, the structural strength of the reflector can be enhanced. The ventilation slit 22 may be formed in a curved shape when viewed from the side facing the reflector 12. The shape of the reflecting plate 21 is not limited to the shape of the above-described embodiment or modification. Further, the front edge portion of each reflecting plate 21 may be formed in a wave shape or a curved shape. The cross-sectional shape of the dry air passage 5 may be an elliptical cross-sectional shape, a polygonal shape having a large number of vertices, or the like.

(Example 10) Figs. 28 to 31 show Example 10 of a hair dryer according to the present invention. In the present embodiment, front and rear, left and right, and up and down follow the cross arrows shown in FIGS. 29 and 30 and the front and rear, left and right, and top and bottom displays shown in the vicinity of each arrow.

  As shown in FIG. 28, the hair dryer includes a horizontally long main body case 1 and a grip 2 that is foldably connected to the rear lower surface of the main body case 1. Although not shown, a slide type switch knob for starting or stopping the operation of the hair dryer and switching between the hot and cold air modes is provided on the front surface of the grip 2. A suction port 3 is provided at the rear end of the main body case 1, and a blower outlet 4 is provided at the front end. A dry air passage 5 extending from the suction port 3 to the blower outlet 4 is provided inside the main body case 1. It is formed in a circular shape. A suction grill 6 made of punching metal is attached to the suction port 3 to prevent a part of hair or clothes from being sucked into the dry air passage 5. Further, a blow grill 7 made of a metal mesh is provided at the blow outlet 4 to prevent fingers and the like from entering the dry air passage 5.

  On the upstream side of the drying air passage 5, there are an axial flow fan 9, a motor 10 that drives the fan 9, a halogen lamp (heat source) 11 that emits infrared rays while generating heat, and the like from the upstream side to the downstream side. Arranged in the order of description. In addition, the halogen lamp 11 is equipped with a reflector 12 that reflects infrared rays emitted from the lamp 11. The motor 10 is assembled to a motor case 13 supported on the inner wall surface of the main body case 1, and a blower fan 9 is fixed to the output shaft of the motor 10. The motor case 13 is composed of an upstream rear case 14 and a downstream front case 15, both cases 14, 15 are both formed in a bottomed cylindrical shape, and cover the motor 10 so as to enclose the motor 10. It is integrated into a shape. A stepped shaft-shaped lamp socket 16 is fixed to the front wall of the front case 15, and the halogen lamp 11 is screwed into the lamp socket 16. Infrared rays refer to all electromagnetic waves having a wavelength longer than that of red light and shorter than that of millimeter-wave radio waves, and include those in the near infrared to far infrared wavelength region. The reflector 12 also reflects electromagnetic waves in the visible light region in addition to infrared rays.

  As shown in FIG. 29, the reflector 12 is made of an aluminum molded product provided with a reflecting portion 20, and the reflecting portion 20 includes an umbrella-shaped first reflector 51 disposed on the upstream side of the drying air passage 5, and a drying air passage. 5 and a cylindrical second reflector 52 disposed in a state of being separated from the first reflector 51. The first reflector 51 is configured by a bowl-like part 53 on the rear side (upstream side of the drying air passage 5) and a cylindrical part 54 that is connected to the front side of the bowl-like part 53. The inner surface of the bowl-shaped portion 53 is provided with a first reflecting surface 55 having a partially rotating paraboloid shape, and the inner surface of the cylindrical portion 54 is divided into eight large and small cross sections oriented in the direction of the first reflecting surface 55. A serrated second reflecting surface 156 (56) is provided in a circular shape. The first reflecting surface 55 reflects incident infrared rays toward the outlet 4 side, and the second reflecting surface 156 reflects incident infrared rays toward the first reflecting surface 55 side. ing. A fixing ring 57 is integrally formed at the rear end of the first reflector 51. By fixing the fixing ring 57 to the small-diameter shaft portion of the lamp socket 16, the hook-shaped portion 53 is attached to the halogen lamp 11. The area is concentrically surrounded.

  The second reflector 52 is formed in a tapered cylindrical shape that narrows toward the front side (downstream side of the drying air passage 5), and the front end thereof is fixed to the blowing grill 7. On the inner surface of the second reflector 52, two second reflecting surfaces 256 (56) having a sawtooth shape in cross section oriented in the direction of the first reflecting surface 55 are provided in a circular shape, and the second reflecting surface 256 is The incident infrared ray is reflected toward the first reflecting surface 55 side. Thus, in the present embodiment, the second reflecting surfaces 56 (156, 256) are provided on the inner surfaces of both the reflectors 51, 52, respectively.

  On the front side of the halogen lamp 11 (downstream side of the drying air passage 5), a light shielding filter 58 that blocks the front opening of the cylindrical portion 54 at the front end of the cylindrical portion 54 of the first reflector 51 (downstream side end of the drying air passage 5). Is arranged. The light shielding filter 58 blocks only the electromagnetic wave (visible light) in the visible light region among the electromagnetic waves radiated from the halogen lamp 11. Thus, by arranging the light shielding filter 58, when the dry air passage 5 is viewed from the outlet 4 (when viewed from the side facing the reflector 12), the visible light emitted from the halogen lamp 11 is directly visually observed. Is prevented. Therefore, the user can comfortably use the hair dryer without feeling dazzling by the halogen lamp 11. The light shielding filter 58 blocks only the electromagnetic wave in the visible light region, and the infrared light is transmitted without being attenuated. Therefore, the light shielding filter 58 does not inhibit the drying of the hair by the infrared light. In the present embodiment, since the halogen lamp 11 is disposed in a space surrounded by the first reflector 51 and the light shielding filter 58, visible light emitted from the halogen lamp 11 is not visually recognized by the user.

  As shown in FIG. 30, when viewed from the side facing the reflector 12, the outer edge shape of the first reflector 51 is formed in a perfect circle shape, and the inner edge shape of the second reflector 52 is formed in a perfect circle shape, Both are formed concentrically (similar). Thus, a continuous annular ventilation slit 22 having an equal width in the circumferential direction is formed in the reflector 12 between the outer edge of the first reflector 51 and the inner edge of the second reflector. In this way, by forming the continuous annular ventilation slit 22 with the same width, the drying air is passed in a uniform state in the circumferential direction from the upstream side to the downstream side of the drying air passage 5 through the ventilation slit 22. be able to. The first and second reflectors 51 and 52 are arranged in the dry air passage 5 so that the outer edge of the first reflector 51 and the inner edge of the second reflector are concentric with the inner wall surface of the dry air passage 5. Yes.

  As shown in FIGS. 28 and 31, an air intake 61 is provided in the cylindrical wall of the main body case 1 near the air outlet 4, and the outside of the main body case 1 (dry air passage 5 is provided via the air intake 61. Air can be introduced into the interior from the outside. A plurality of air intake ports 61 are provided around the body case 1 at regular intervals. A cylindrical channel section cylinder 64 is provided in the rear half of the dry air passage 5 with the tip facing the ventilation slit 22. The flow path division cylinder 64 is disposed in the in-cylinder space facing the ventilation slit 22, and has an inner primary air flow path 62 for flowing the dry air fed from the blower fan 9 and two air pipes introduced from the air intake 61. It is divided into an outer secondary air flow path 63 through which the secondary air flows. The flow path dividing cylinder 64 is configured by a rear-side front-restricted cylindrical reduced diameter cylindrical portion 65 and a linear cylindrical round cylindrical portion 66 continuous to the front side of the reduced diameter cylindrical portion 65. Fixing ribs 67 are integrally formed at four locations on the outer peripheral surface of the flow path classification cylinder 64, and by fixing the fixing ribs 67 to the inner wall surface of the dry air passage 5, the flow path classification cylinder 64 is in the cylinder. It arrange | positions in space (refer FIG. 30). The previous air intake 61 is provided so as to face the secondary air flow path 63, and the front end of the secondary air flow path 63 opens toward the second reflector 52. Note that a dustproof filter 68 that prevents dust and the like from entering the secondary air flow path 63 is attached to the air intake 61.

  When the hair dryer is used, when the switch knob is switched to the warm air mode, the halogen lamp 11 is turned on. When the halogen lamp 11 is turned on, infrared rays radiated from the halogen lamp 11 toward the outlet 4 are irradiated so as to spread in a conical shape toward the front side of the outlet 4 without being reflected. Further, infrared rays emitted from the halogen lamp 11 toward the first reflecting surface 55 of the first reflector 51 are reflected by the first reflecting surface 55 and irradiated forward of the air outlet 4. Infrared rays radiated from the halogen lamp 11 toward the second reflecting surface 156 of the first reflector 51 and the second reflecting surface 256 of the second reflector 52 are first transmitted from both the second reflecting surfaces 156 and 256. The light is reflected toward the reflecting surface 55, reflected again by the first reflecting surface 55, and irradiated forward of the outlet 4. Accordingly, in the irradiation range defined by the first reflecting surface 55, infrared rays emitted from the halogen lamp 11 in the forward direction, the first reflecting surface 55 direction, and both the second reflecting surfaces 156 and 256 are irradiated.

  In conjunction with the lighting of the halogen lamp 11, the motor 10 is activated and the blower fan 9 is driven. The air sucked from the suction port 3 by the blower fan 9 is fed toward the blower outlet 4 as primary air, passes between the first reflector 51 and the flow channel section cylinder 64, and passes through the primary air flow channel 62. Is blown out. At this time, since the first reflector 51 is heated by the halogen lamp 11, the primary air flowing through the primary air flow path 62 is heated by the first reflector 51. When the air flows through the primary air flow path 62, a negative pressure is applied to the secondary air flow path 63 by a venturi action due to the flowing air flow, and this negative pressure causes the outside of the main body case 1 (outside the dry air passage 5). Air is introduced into the secondary air flow path 63 through the air intake 61. The air introduced into the secondary air flow path 63 is blown out along the flow of primary air from the front end of the flow path 63, and thereby, the inner and outer two layers of the primary air and the secondary air are discharged from the outlet 4. Dry air is blown out. At this time, when the drying air passes through the inside of the second reflector 52, the flow rate on the outlet side becomes larger than the inlet side due to the tapered second cylindrical reflector 52, and the dry air blows out from the outlet 4. Is done.

  As described above, in the hair dryer of the present embodiment, since the continuous annular ventilation slit 22 is formed between the outer edge of the first reflector 51 and the inner edge of the second reflector, the first and second reflectors are formed. Infrared reflection modes 51 and 52 can be individually set with a relatively high degree of freedom. Therefore, the reflector 12 can freely set the reflecting direction of the infrared rays, the convergence of the reflected infrared rays, or the diffusion state.

  Since the first reflecting surface 55 is provided on the inner surface of the first reflector 51 and the second reflecting surfaces 156 and 256 (56) are provided on the inner surfaces of the first reflector 51 and the second reflector 52, the first reflecting surface is provided. The illuminance of infrared rays in the irradiation range defined by 55 can be improved. Specifically, when the first reflecting surface 55 and the second reflecting surfaces 156 and 256 are provided in the reflecting portion 20 as in the present embodiment, the infrared rays reflected by the first reflecting surface 55 as described above. In addition, the infrared rays reflected by the second reflecting surfaces 156 and 256 toward the first reflecting surface 55 and reflected again by the first reflecting surface 55 are irradiated to the irradiation range defined by the first reflecting surface 55. . As a result, the illuminance of infrared rays in the irradiation range of the first reflecting surface 55 can be improved, and therefore the infrared rays having sufficient illuminance necessary for drying can be applied to the hair even at a position away from the hair dryer. Can do.

  Since the outer edge of the first reflector 51 and the inner edge of the second reflector 52 are formed concentrically (similar), the width dimension of the ventilation slit 22 formed between the two 51 and 52 is the same in the circumferential direction. Can be formed. Thereby, since the drying air can be passed in a uniform state from the upstream side to the downstream side of the drying air passage 5, it is possible to blow out the drying air from the air outlet 4 with no uneven flow rate. Accordingly, it is possible to improve the straightness of the drying air blown from the blower outlet 4 and accurately feed the drying air to the hair.

  Since the second reflector 52 is formed in a tapered tube shape that narrows toward the downstream side of the dry air passage 5, the outlet-side cross-sectional area inside the second reflector 52 becomes smaller than the inlet-side cross-sectional area, The flow rate of the drying air that has passed through the inside of the second reflector 52 can be increased on the outlet side. Therefore, the straightness of the drying air blown from the outlet 4 can be further improved, and the drying air can be accurately fed to the hair.

  The ventilation slit 22 is divided into an inner primary air flow path 62 for flowing the primary air and an outer secondary air flow path 63 for flowing the secondary air by the cylindrical flow path dividing cylinder 64. By forming a secondary air layer on the outer periphery of the air, two layers of dry air can be blown out from the outlet 4. Therefore, it is possible to suppress the primary air from diffusing outside in the secondary air layer, and to further improve the straightness of the dry air blown from the outlet 4.

  In FIG. 32, the modification of the reflector 12 in Example 10 is shown. In this case, the first reflector 51 is configured by only the bowl-shaped portion 53 without the cylindrical portion 54, and accordingly, the second reflecting surface 156 is omitted and only the first reflecting surface 55 is provided. . The second reflector 52 is formed in a cylindrical shape having a length in the front-rear direction larger than that of the tenth embodiment, and ten second reflecting surfaces 256 are provided on the inner surface thereof. The first and second reflectors 51 and 52 are disposed in the dry air passage 5 with the front end of the first reflector 51 and the rear end of the second reflector 52 being close to each other. The light blocking filter 58 is formed in a front projection shape, and a gap is provided between the light blocking filter 58 and the tip of the halogen lamp 11 to prevent damage to the light blocking filter 58 due to the heat of the halogen lamp 11. The air intake 61 and the flow path dividing cylinder 64 of the main body case 1 are omitted. Since others are the same as those of the tenth embodiment, the same members are denoted by the same reference numerals and description thereof is omitted. The same applies to the following description.

  When the second reflecting surface 156 is provided on the first reflector 51 as in the previous embodiment, it is necessary to determine the shape of the bowl-shaped portion 53 in consideration of the shape of the cylindrical portion 54 on which the second reflecting surface 56 is provided. As described above, by omitting the cylindrical portion 54 of the first reflector 51, the design restrictions can be eliminated, and the degree of freedom in designing the bowl-shaped portion 53 can be expanded. In addition, by increasing the length of the second reflector 52 in the front-rear direction, the area where the second reflecting surface 256 can be provided is enlarged, and the illuminance in the irradiation range of the first reflecting surface 55 is improved. Can do.

  FIG. 33 shows another modification of the reflector 12 in the tenth embodiment. There, the first reflector 51 and the second reflector 52 are formed in a partially rotating paraboloid shape, and the inner surfaces of both 51 and 52 are the first reflecting surface 55. Thus, the reflector 12 can take a form in which the second reflecting surfaces 156 and 256 (56) are omitted from the reflecting portion 20. Further, in the present modified example, a pre-expanded tubular lamp housing cylinder portion 71 in which the halogen lamp 11 is housed is provided between the flange portion 53 of the first reflector 51 and the fixing ring 57, and the inner surface thereof. Is configured as a first reflecting surface 55. The lamp housing cylinder 71 may be formed in a straight cylindrical shape or a tapered cylindrical shape, and the inner surface thereof does not need to be configured as the first reflecting surface 55.

  As described above, according to the reflection unit 20 in which the second reflection surfaces 156 and 256 are omitted and the first and second reflectors 51 and 52 are formed in a partial paraboloid shape, the shape of the reflection unit 20 Therefore, the reflector 12 can be manufactured easily and inexpensively by subjecting the aluminum plate material to drawing and punching with a press.

  In the tenth embodiment and the modification thereof, in addition to the continuous annular ventilation slit 22, the first embodiment has a slit-like or elongated opening ventilation slit 22 in which one end according to the first to ninth embodiments is released. Further, the second reflectors 51 and 52 can be provided. Each of the first and second reflectors 51 and 52 of the reflection unit 20 may be configured as a single molded product, or may be configured by joining two parts divided into left and right, for example. According to the first and second reflectors 51 and 52 formed by joining two parts, the first reflecting surface 55 and the second reflecting surface 56 having a complicated shape as compared with the case where the first reflecting member 51 and the second reflecting member 56 are configured by one molded product. Even so, since the reflecting portion 20 can be easily formed, the manufacturing cost of the reflector 12 can be reduced.

  Further, the cylindrical portion 54 of the first reflector 51 can be formed into a tapered cylindrical shape or a forwardly expanding cylindrical shape. The second reflector 52 can be formed in a pre-expanded cylindrical shape. The cross-sectional shape of the dry air passage 5, the cylindrical portion 54 of the first reflector 51, and the second reflector 52 may be elliptical, polygonal with a large number of vertices, or the like. The light-shielding filter 58 may be a filter that slightly transmits electromagnetic waves in the visible light region. In this case, visible light emitted from the halogen lamp 11 can be observed, so that the lighting state of the halogen lamp 11 can be confirmed. .

  As described above, in the hair dryer of each of the embodiments described above, at least one ventilation slit 22 that allows the drying air to pass from the upstream side to the downstream side of the drying air passage 5 is provided in the reflecting portion 20 of the reflector 12. Therefore, the drying air can be passed to the downstream side of the reflector 12 through the ventilation slit 22. Thereby, even if the reflector 12 is enlarged for the purpose of improving the reflection efficiency, the ventilation resistance can be reduced, and a sufficient amount of drying air necessary for drying the hair is blown from the outlet 4. Can be put out. Therefore, according to the hair dryer of each said Example, the hair dryer which can reduce ventilation resistance can be provided, suppressing the reduction | decrease in reflection efficiency.

  In each of the above embodiments, the heat source 11 is constituted by a halogen lamp. However, the heat source 11 may be constituted by, for example, a halogen heater, a ceramic heater, or a carbon heater that emits infrared rays while generating heat. The material of the reflector 12 is not limited to aluminum.

3 Inlet 4 Outlet 5 Drying air passage 9 Blower fan 10 Motor 11 Heat source (halogen lamp)
DESCRIPTION OF SYMBOLS 12 Reflector 19 Base part 20 Reflecting part 21 Reflecting plate 22 Ventilation slit 24 Edge part 25 Edge end surface 45 Reflecting umbrella 46 Reflecting ring 47 Bridge wall 51 First reflector 52 Second reflector 55 First reflecting surface 56 Second reflecting surface 58 light-shielding filter 61 air intake 62 primary air flow path 63 secondary air flow path 64 flow path division cylinder P virtual center axis S1 projected area S2 of reflector projected area defined by outer edge of reflector

Claims (17)

A blower fan (9), a motor (10) that drives the blower fan (9), and a heat source that emits infrared rays while generating heat in a dry air passage (5) from the suction port (3) to the blower outlet (4) A hair dryer comprising (11) and a reflector (12) for reflecting infrared rays,
The reflector (12) is provided so as to surround the periphery of the heat source (11), and includes a reflection section (20) that reflects infrared rays radiated from the heat source (11) toward the outlet (4). ,
A hair dryer characterized in that the reflection section (20) is provided with at least one ventilation slit (22) for allowing the drying air to pass from the upstream side to the downstream side of the drying air passage (5). The reflection portion (20) includes at least two reflection plates (21) extending outwardly from the base portion (19) of the reflector (12) toward the blowout port (4).
Edges (24, 24) adjacent to each other in the circumferential direction of the adjacent reflectors (21, 21) are viewed from the side facing the reflector (12) in the radial direction, or in the radial direction and in the circumferential direction. The hair dryer according to claim 1, wherein a ventilation slit (22) is formed between the edges (24, 24) by being positioned in a state of being displaced.   The edge surfaces (25, 25) of the circumferential edges (24, 24) of adjacent reflectors (21, 21) are located on the same line as viewed from the side facing the reflector (12). 2. A hair dryer according to 2.   The hair dryer according to claim 2, wherein the edge portions (24, 24) in the circumferential direction of the adjacent reflectors (21, 21) overlap with each other when viewed from the side facing the reflector (12). A plurality of reflectors (21) formed in the same shape are arranged at equiangular intervals around the heat source (11), and the reflector (20) is formed in a windmill shape,
When viewed from the side facing the reflector (12), the reflector (21) is arranged so that the virtual center axis (P) passing through the center in the circumferential direction of each reflector (21) does not intersect at the center of the dry air passage (5). The hair dryer as described in any one of Claim 2 to 4 provided.   The hair dryer according to any one of claims 2 to 5, wherein the reflecting plate (21) is formed in a partially rotating paraboloid shape, and the concave curved surface faces the heat source (11). The reflection part (20) is composed of an umbrella-shaped reflection plate (21) that expands in the direction of the air outlet (4).
The ventilation slit (22) from the middle part of a reflecting plate (21) to the front-end edge or base end edge of a reflecting plate (21) is formed in the reflection part (20) in multiple numbers radially. Hair dryer. The reflection part (20) is composed of an umbrella-shaped reflection plate (21) that expands in the direction of the air outlet (4).
The hair dryer according to claim 1, wherein a plurality of ventilation slits (22) penetrating the midway part of the reflection plate (21) are formed in the reflection part (20) in the circumferential direction.   The length dimension of the ventilation slit (22), as viewed from the side facing the reflector (12), is formed to be ¼ or more of the diameter dimension of a circle circumscribing the outer shape of the reflecting portion (20). The hair dryer according to any one of 1 to 8. The reflecting portion (20) includes an umbrella-shaped reflecting umbrella (45) that expands in the direction of the air outlet (4), and a reflecting ring that is arranged around the reflecting umbrella (45) at predetermined intervals. A reflective plate (21) including (46), the majority of the reflective ring (46) on the tip side protrudes in the direction of the outlet (4) from the tip edge of the reflector (45),
The reflecting umbrella (45) and the reflecting ring (46) are integrally formed with a plurality of bridging walls (47) that bridge the portions facing both inside and outside, and the reflecting umbrella (45). The hair dryer according to claim 1, wherein a plurality of ventilation slits (22) are formed between the reflection ring (46) and the reflection ring (46).   The projected area (S1) of the reflector (12) as viewed from the side facing the reflector (12) is set to 75% or more of the projected area (S2) defined by the outer edge of the reflector (12). Item 11. A hair dryer according to any one of Items 1 to 10. The reflector (20) includes an umbrella-shaped first reflector (51) disposed on the upstream side of the dry air passage (5) and a cylindrical second disposed on the downstream side of the dry air passage (5). And a reflector (52),
When viewed from the side facing the reflector (12), the inner edge shape of the second reflector (52) is formed larger than the outer edge shape of the first reflector (51), and the outer edge of the first reflector (51). The hair dryer according to claim 1, wherein a continuous annular ventilation slit (22) is formed between the second reflector (52) and the inner edge of the second reflector (52). A first reflecting surface (55) that reflects incident infrared rays toward the outlet (4) side is provided on the upstream side of the dry air passage (5) on the inner surface of the first reflector (51),
The second reflecting surface for reflecting the incident infrared rays toward the first reflecting surface (55) side on the inner surface of the second reflecting body (52) or the first reflecting body (51) and the second reflecting body (52). The hair dryer according to claim 12, wherein (56) is provided.   The inner edge shape of the second reflector (52) is formed to be similar to the outer edge shape of the first reflector (51) when viewed from the side facing the reflector (12). Hair dryer.   The hair dryer according to claim 14, wherein the second reflector (52) is formed in a tapered tube shape that narrows toward the downstream side of the dry air passage (5). An air intake (61) for introducing air from the outside to the inside of the dry air passage (5) is provided;
A flow path section cylinder (64) is provided in the latter half of the dry air passage (5),
An inner primary air flow path (62) through which the dry air passage (5) flows the dry air fed by the blower fan (9) and an outer side through which the secondary air introduced from the air intake port (61) flows. The hair dryer according to claim 15, wherein the secondary air flow path (63) is divided by a flow path dividing cylinder (64).   The hair dryer according to any one of claims 12 to 16, wherein a light shielding filter (58) for blocking visible light is disposed at a downstream end of the drying air passage (5) of the first reflector (51).

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