JP3245012U - hair dryer - Google Patents

Abstract

An object of the present invention is to provide a hair dryer that can efficiently radiate far-infrared rays while having a simple structure. [Solution] The hair dryer has a built-in heater and a blower, and integrally has a cylindrical body 10 that serves as a hot air guide path for sending hot air to the outside, and includes a conical hot air guide 30 and a far infrared emitting material. It includes a layer 40 and a heat receiving member. The conical hot air guide body is provided apart from the inner wall surface of the cylinder, and expands in diameter in a conical shape along the flow direction of the hot air, so that the hot air flows in a ring shape along the inner wall surface of the cylinder. I will guide you as follows. The far-infrared emitting material layer is provided on the leeward side of the conical hot air guide. The heat receiving member extends continuously from the far-infrared emitting material layer, is located in the ring-shaped flow of hot air along the inner wall surface of the cylinder, and transmits the heat received from the hot air to the far-infrared emitting material layer. [Selection diagram] Figure 3

Description

The present invention relates to a hair dryer, and more particularly to a hair dryer that can emit far-infrared rays toward hair.

A hair dryer is used to dry and care for wet hair. In a typical hair dryer, air is sucked in from the outside by a fan (blower) that is rotationally driven by a motor, the intake air is heated by a heater, and the heated air is discharged outside as hot air or warm air by the fan. .

In recent years, hair dryers that can emit far-infrared rays have been attracting attention. Far-infrared rays are a type of electromagnetic waves like light and radio waves, and are electromagnetic waves with wavelengths in the range of 3 μm to 1000 μm among infrared rays that have longer wavelengths than visible red light. In particular, far infrared rays with wavelengths in the range of 4 μm to 14 μm resonate with molecules in the human body, expanding capillaries and smoothing blood circulation, promoting metabolism and improving the body's immunity. can be increased.

Since far-infrared rays are electromagnetic waves, they move without being affected by air currents. When electromagnetic waves hit a substance, they cause the molecules of that substance to vibrate. When molecules vibrate, frictional heat is generated, which acts as a heat source to heat or dry substances.

As a hair dryer that focuses on such far infrared rays, for example, Japanese Patent Application Laid-Open No. 07-051121 (Patent Document 1), Japanese Patent Application Laid-Open No. 05-329020 (Patent Document 2), and Japanese Utility Model Application Publication No. 64-55803 ( Patent Document 3) etc. are known.

The hair dryer disclosed in Japanese Unexamined Patent Publication No. 07-051121 (Patent Document 1) uses a far-infrared heater. Specifically, a mica cylindrical body is attached to the outer periphery of a heater board placed inside the dryer body, a heater wire is wound around the outside of this mica cylindrical body to form a heater body, and a heater wire is further attached to the surface of the heater body. A far-infrared heater is constructed by coating with infrared radiation paint.

In the hair dryer disclosed in Japanese Unexamined Patent Publication No. 05-329020 (Patent Document 2), an outlet grill to which far-infrared emitting material is attached is attached to the outlet at the front end of the dryer body case. The outlet grill also serves as a far-infrared radiation plate and has a large number of elongated ventilation holes.

In the hair dryer disclosed in Japanese Utility Model Application Publication No. 64-55803 (Patent Document 3), a far-infrared ray generator is provided at the hot air outlet at the tip of the duct. The far-infrared ray generator includes a cone-shaped metal body whose windward end and leeward end are open, and a far-infrared emissive ceramic layer provided on the leeward surface of the metal body. . In the hair dryer disclosed in this publication, hot air flows through the passage between the outer surface of the metal main body and the inner surface of the duct, and also flows through the windward opening and the leeward opening of the apparatus main body.

Japanese Patent Application Publication No. 07-051121 Japanese Patent Application Publication No. 05-329020 Utility Model Publication No. 64-55803

In the hair dryer disclosed in JP-A-07-051121 (Patent Document 1), a far-infrared heater is provided inside the dryer body in order to emit far-infrared rays, but such a structure is complicated. , leading to higher costs.

In Japanese Unexamined Patent Publication No. 05-329020 (Patent Document 2), a far-infrared emitting substance is attached to the outlet grill attached to the outlet at the front end of the dryer body case, but there are many elongated ventilation holes. Therefore, it is not possible to increase the adhesion area of the far-infrared adhesion substance.

In the hair dryer disclosed in Japanese Utility Model Application Publication No. 64-55803 (Patent Document 3), a cone-shaped metal body is disposed inside the duct, and a ceramic layer is provided on the leeward surface of this metal body. This is not desirable from a safety standpoint, since the large-volume metal body and electric heating components such as heaters are in close proximity. Further, although the metal body has openings or through holes through which hot air passes, a ceramic layer cannot be provided in these openings or through holes. Therefore, the area in which the ceramic layer is formed is reduced, and the far-infrared radiation efficiency is reduced accordingly.

An object of the present invention is to provide a hair dryer that has a simple structure and can efficiently radiate far-infrared rays.

Another object of the present invention is to provide a hair dryer that can enhance the far-infrared ray emission effect by providing far-infrared ray emitting material over a wide area.

The hair dryer according to the present invention has a built-in heater and blower, and integrally has a cylindrical body that serves as a hot air guide path for sending hot air to the outside, and includes a conical hot air guide and a far-infrared emitting material layer. and a heat receiving member.

The conical hot air guide body is provided apart from the inner wall surface of the cylinder, and expands in diameter in a conical shape along the flow direction of the hot air, so that the hot air flows in a ring shape along the inner wall surface of the cylinder. I will guide you as follows. The far-infrared emitting material layer is provided on the leeward side of the conical hot air guide. The heat receiving member extends continuously from the far-infrared emitting material layer, is located in the ring-shaped flow of hot air along the inner wall surface of the cylinder, and transfers the heat received from the hot air to the far-infrared emitting material layer.

In one embodiment, the layer of far-infrared emitting material includes a thin metal sheet and a far-infrared emitting material attached to a leeward surface of the thin metal sheet. The conical hot air guide is preferably made of resin in consideration of safety.

Preferably, the heat receiving member is a metal band projecting and extending from the thin metal plate. This metal strip extends, for example, onto the windward conical surface of the conical hot air guide.

The conical hot air guide preferably has a cylindrical wall with a closed windward end and an open leeward end.

In one embodiment, the layer of infrared emitting material is in the form of a flat disc covering the leeward end opening of the cylinder wall. In another embodiment, the far-infrared emitting material layer is provided along substantially the entire leeward wall surface of the cylinder wall.

In one embodiment, the heat receiving member is a metal band that protrudes from the periphery of the far-infrared emitting material layer, extends beyond the leeward end surface of the cylindrical wall, and extends toward the windward side along the outer surface of the cylindrical wall. be. In another embodiment, the heat receiving member is a metal band protruding from the far infrared emitting material layer and extending upwind through the conical hot air guide. In yet another embodiment, the heat-receiving member is a ring-shaped portion that extends from the peripheral edge of the thin metal plate toward the inner wall surface of the cylindrical body with its diameter continuously increasing. In this case, the ring-shaped portion preferably extends at an angle toward the leeward side.

The hair dryer according to a preferred embodiment further includes a ring-shaped far-infrared emitting material layer that extends in a ring shape, sandwiching the leeward end of the wall of the cylinder surrounding the conical hot air guide.

According to the present invention, it is possible to provide a hair dryer that has a simple structure and can efficiently radiate far-infrared rays.

1 is a perspective view showing a hair dryer according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a main part of the hair dryer shown in FIG. 1. FIG. FIG. 3 is a diagram illustrating a longitudinal section taken along the center of the main part of FIG. 2; FIG. 3 is a perspective view showing a far-infrared emitting material layer with a protruding metal band. FIG. 3 is an illustrative view of the main part of FIG. 2 viewed from the windward side. FIG. 7 is a diagram illustrating a longitudinal section taken along the center of a main part of a hair dryer according to another embodiment of the present invention. FIG. 7 is a diagram illustrating a centrally cut vertical section of a main part of a hair dryer according to still another embodiment of the present invention. FIG. 3 is a diagram showing a far-infrared emitting material layer with a protruding metal band. It is an illustrative view showing the main part of the hair dryer concerning yet another embodiment of the present invention. It is an illustrative view showing the main part of the hair dryer concerning yet another embodiment of the present invention.

Embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same or corresponding parts are given the same reference numerals and their description will not be repeated.

The hair dryer shown in FIG. 1 has a built-in heater and blower, and includes a cylindrical body 10 that serves as a hot air guide path that sends air heated by the heater to the outside as hot air, and a grip part 20 that can be held by a person's hand. It has an integrated structure.

As shown in FIGS. 2 and 3, the cylinder 10 has an inner cylinder 11 that directly surrounds the hot air guide path, and an outer cylinder 12 that is spaced apart from the inner cylinder 11 in the radial direction. Hot air does not flow into the space between the inner cylinder 11 and the outer cylinder 12. Therefore, the inner cylinder 11 is heated to a high temperature by the heat from the hot air, but the outer cylinder 12 is kept at a relatively low temperature, so that the user can safely use the hair dryer.

The material of the outer shell of the hair dryer body including the outer cylinder 12 and the inner cylinder 11 is typically resin. As shown in FIGS. 1 to 3, a conical hot air guide body 30 made of resin is disposed within the end region of the hot air blowing side of the inner cylinder 11. As shown in FIGS. The conical hot air guide body 30 is connected to the inner cylindrical body 11 via three resin connecting bands 33 arranged at intervals of 120 degrees in the circumferential direction. The outer peripheral surface of the conical hot air guide 30 and the inner peripheral surface of the inner cylinder 11 are separated from each other, and the hot air passes between them.

The conical hot air guide 30 has a conical surface 31 on the outer surface closer to the heater, that is, on the windward side, and a cylindrical surface 32 on the outer surface on the hot air outlet side, that is, on the leeward side. The conical surface 31 of the conical hot air guide 30 is spaced apart from the inner wall surface of the inner cylindrical body 11, and expands in diameter in a conical shape along the hot air flow direction (direction from the heater to the outlet). . Therefore, the flow of hot air sent through the heater is guided so as to form a ring-shaped flow along the inner wall surface of the inner cylindrical body 11. By arranging the conical hot air guide body 30 having the above-mentioned shape within the inner cylinder 11, the wind speed at the tip outlet of the cylinder 10 increases, making it possible to efficiently dry and care for hair.

In the illustrated embodiment, the conical hot air guide body 30 made of resin is a cylindrical wall that is hollow inside, closed at the windward end, and open at the leeward end.

As shown in FIGS. 1 to 3, a far-infrared emitting material layer 40 is provided on the leeward side of the conical hot air guide 30. In the illustrated embodiment, the far-infrared emitting material layer 40 is in the form of a flat disk that covers the leeward opening of the cylindrical wall of the inner cylindrical body 11 . Preferably, the far-infrared emitting material layer 40 includes a thin metal plate 41 and a far-infrared emitting material 42 attached to the leeward surface of the thin metal plate 41.

As is clear from FIGS. 4 and 5 together with FIGS. 1 to 3, a plurality of bands 43 continuously extend from the upper surface (downwind surface) of the far-infrared emitting material layer 40. In the illustrated embodiment, three bands 43 protrude from the periphery of the far-infrared emitting material layer 40 and extend beyond the leeward end surface of the cylindrical wall of the conical hot air guide 30 and along the outer surface of the cylindrical wall. It extends towards the top. This band 43 is located in the ring-shaped flow of hot air along the inner wall surface of the inner cylinder 11 and functions as a heat receiving member that transfers the heat received from the hot air to the far-infrared emitting material layer 40. The band 43 extends up to the conical surface 31 upwind of the conical hot air guide 30 .

In order for the band 43 to function as a heat receiving member, a material with good thermal conductivity is selected for the band 43.

The material of the thin metal plate 41 supporting the far-infrared emitting material 42 is a metal with good thermal conductivity, such as stainless steel or copper, but it is preferable to use copper with good thermal conductivity. In order to efficiently transfer heat from the band 43 functioning as a heat receiving member to the thin metal plate 41, it is preferable that the band 43 is also made of copper, which is the same material as the thin metal plate 41. From the viewpoint of smooth heat transfer, it is preferable that the band 43 and the thin metal plate 41 are provided integrally.

The far-infrared emitting material 42 deposited on the leeward surface of the thin metal plate 41 is a material that emits far-infrared rays when heated, such as carbon, ceramic, diatomaceous earth, tourmaline, china clay, mullite, and cordierite. Far-infrared emitting material powder containing one or more of these materials and an adhesive are mixed in a ratio of, for example, 8:2 to form a far-infrared paint, which is coated on the surface of the thin metal plate 41. The adhesive is, for example, a synthetic resin that can withstand high temperatures, silicone rubber, oil-based paint, or the like.

Another example for obtaining a far-infrared emitting material is a water-based or oil-based solution paint containing far-infrared emitting material powder at a concentration of about 10 to 50% without using an adhesive.

According to the embodiment shown in FIGS. 1 to 5, the hot air heated by the heater and sent out by the blower is transmitted to the outer peripheral surface (conical surface 31 and cylindrical surface 32) of the conical hot air guide 30 and the inner wall surface of the inner cylinder 11. When passing between the two, the metal band 43, which functions as a heat receiving member, is heated. Since the metal band 43 having good thermal conductivity transfers the received heat to the thin metal plate 41, the thin metal plate 41 is also appropriately heated. The far-infrared emitting material 42 provided on the leeward surface of the thin metal plate 41 is heated by heat conduction from the thin metal plate 41, and stably emits far-infrared rays.

In the hair dryer disclosed in Japanese Utility Model Application Publication No. 64-55803 cited as Patent Document 3, a cone-shaped metal main body is placed close to an electric heating component such as a heater, but in the embodiment of the present invention, The material of the conical hot air guide body 30 is resin, and the only parts that receive heat are the plurality of metal bands 43, which is preferable from a safety standpoint.

Further, the effect of far-infrared radiation is higher as the distance between the far-infrared radiation material 42 and the hair is shorter. In the illustrated embodiment, the far-infrared material 42 is spread planarly at the end face of the outlet of the cylinder 10, so the distance from the hair is relatively short, and the effect of far-infrared rays can be enhanced. Further, since the far-infrared emitting material layer 40 does not have any openings or through-holes that allow hot air to pass through, far-infrared rays can be emitted over a large area.

FIG. 6 shows a hair dryer according to another embodiment of the present invention. In the illustrated embodiment, a far-infrared emitting material layer 50 is provided on the leeward side of the conical hot air guide 30, and a metal band 51 functioning as a heat receiving member is further provided on the far-infrared emitting material layer 50, similar to the embodiment described above. It extends continuously from. The far-infrared emitting material layer 50 preferably includes a thin metal plate and a far-infrared emitting material attached to the leeward surface of the thin metal plate.

The embodiment shown in FIG. 6 differs from the embodiment shown in FIGS. It extends upwind through the conical wall of the pipe. The tip of the metal band 51 is located on the windward conical surface of the conical hot air guide 30.

7 and 8 show a hair dryer according to yet another embodiment of the present invention. In the illustrated embodiment as well, a far-infrared emitting material layer 60 is provided on the leeward side of the conical hot air guide 30, and a plurality of (for example, three) metal bands 61 functioning as heat receiving members are provided on the far-infrared emitting material layer 60. It extends continuously from. Similar to the embodiment of FIG. 6, the metal band 61 extends through the conical cylinder wall of the conical hot air guide 30 toward the windward side.

The embodiment shown in FIG. 7 differs from the previously described embodiments in that the far-infrared emitting material layer 60 is provided over the entire leeward side wall surface of the hollow conical hot air guide 30. It is. According to this embodiment, the area of the far-infrared emitting material layer 60 can be significantly increased, so that the far-infrared emitting effect is enhanced. The far-infrared emitting material layer 60 preferably includes a thin metal plate or metal foil provided over the entire leeward side wall surface of the conical hot air guide 30, and a thin metal plate or metal foil coated on the entire surface of the thin metal plate or metal foil. and a far-infrared emitting material.

FIG. 9 shows an illustrative view of a hair dryer according to yet another embodiment of the present invention. In the illustrated embodiment, the heat receiving member 71 extends continuously from the outer peripheral edge of the far-infrared emitting material layer 70 attached planarly to the leeward side of the conical hot air guide 30 toward the inner wall surface of the inner cylinder 11. The diameter expands and extends to form a ring-shaped portion. The far-infrared emitting material layer 70 preferably includes a thin metal plate and a far-infrared emitting material attached to the leeward surface of the thin metal plate. Preferably, the ring-shaped heat receiving member 71 also includes a thin metal plate and a far-infrared emitting material attached to the leeward surface of the thin metal plate. In a preferred embodiment, the two-layer structure of the far-infrared emitting material layer 70 and the two-layer structure of the heat receiving member 71 are the same, and both are continuous without boundaries.

The ring-shaped portion 71 is configured to extend slanted toward the leeward side so as not to create a large resistance to the flow of hot air passing between the conical hot air guide 30 and the inner wall surface of the inner cylinder 11. is preferable.

FIG. 10 shows an illustration of a hair dryer according to yet another embodiment of the present invention. The far-infrared emitting material layer 50 and metal strip 51 in the illustrated embodiment are the same as the embodiment shown in FIG.

The embodiment shown in FIG. 10 differs from the previously described embodiments in that the hair dryer further includes a ring-shaped far-infrared emitting material layer 80. The ring-shaped far-infrared emitting material layer 80 extends in a ring shape, sandwiching the leeward end of the wall of the inner cylinder 11 surrounding the conical hot air guide 30 . The leeward end of the inner cylindrical body 11 is heated to a high temperature by the passing hot air. Therefore, the ring-shaped far-infrared emitting material layer 80 sandwiching the leeward end of the wall of the inner cylinder 11 is also heated and emits far-infrared rays. The far-infrared emitting material layer 80 may be formed by directly coating a far-infrared material on the wall surface of the inner cylinder 11, or may have a two-layer structure of a metal foil and a far-infrared material.

According to the embodiment shown in FIG. 10, in addition to the far infrared emitting material layer located at the center of the inner cylinder 11, a ring-shaped far infrared emitting material layer 80 sandwiching the leeward end of the wall of the inner cylinder 11 Since far infrared rays are also emitted from the hair, the amount of far infrared rays emitted increases, and the drying effect on hair can be enhanced.

Although several embodiments have been described above with reference to the drawings, the illustrated embodiments are merely illustrative, and various modifications and changes may be made within the same scope or equivalent scope of the present invention. It is possible.

The present invention can be advantageously used as a hair dryer that has a simple structure and can effectively emit far-infrared rays.

1 Cylindrical body, 11 Inner cylinder body, 12 Outer cylinder body, 20 Grip portion, 30 Conical hot air guide, 31 Conical surface, 32 Cylindrical surface, 33 Connecting band, 40 Far infrared emitting material layer, 41 Thin metal plate, 42 Far infrared rays emitting material, 43 band, 50 far infrared rays emitting material layer, 51 metal band, 60 far infrared rays emitting material layer, 61 metal band, 70 far infrared rays emitting material layer, 71 heat receiving member (ring shaped part), 80 ring shaped far infrared rays Release material layer.

Claims (11)

A hair dryer that has a built-in heater and a blower and has an integral cylindrical body that serves as a hot air guide path for sending hot air to the outside,
A conical shape that is provided at a distance from the inner wall surface of the cylindrical body, expands in diameter in a conical shape along the flow direction of the hot air, and guides the flow of the hot air so that it becomes a ring-shaped flow along the inner wall surface of the cylindrical body. a hot air guide;
a far-infrared emitting material layer provided on the leeward side of the conical hot air guide;
a heat receiving member that extends continuously from the far-infrared emitting material layer, is located in a ring-shaped flow of hot air along the inner wall surface of the cylindrical body, and transmits heat received from the hot air to the far-infrared emitting material layer; , a hair dryer. The hair dryer according to claim 1, wherein the far-infrared emitting material layer includes a thin metal plate and a far-infrared emitting material attached to a leeward surface of the thin metal plate. The heat receiving member is a metal band that protrudes and extends from the thin metal plate,
The hair dryer according to claim 1, wherein the metal band extends onto the windward conical surface of the conical hot air guide. The hair dryer according to claim 1, wherein the conical hot air guide is a cylindrical wall having a closed windward end and an open leeward end. 5. The hair dryer according to claim 4, wherein the infrared emitting material layer is in the form of a flat disk covering a leeward end opening of the cylindrical wall. The hair dryer according to claim 4, wherein the far-infrared emitting material layer is provided along substantially the entire leeward wall surface of the cylinder wall. The heat receiving member is a metal band that protrudes from the periphery of the far-infrared emitting material layer, extends beyond the leeward end surface of the cylindrical wall, and extends toward the windward side along the outer surface of the cylindrical wall. The hair dryer according to item 5 or 6. The hair dryer according to claim 5 or 6, wherein the heat receiving member is a metal band that protrudes from the far-infrared ray emitting material layer and extends upwind through the conical hot air guide. The hair dryer according to claim 2, wherein the heat receiving member is a ring-shaped portion that extends from the peripheral edge of the thin metal plate toward the inner wall surface of the cylindrical body with a diameter continuously increasing. The hair dryer according to claim 9, wherein the ring-shaped portion extends at an angle toward the leeward side. The hair dryer according to claim 1, further comprising a ring-shaped far-infrared emitting material layer extending in a ring shape and sandwiching the leeward end of the wall of the cylindrical body surrounding the conical hot air guide.

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