JP2024045690A - hair iron - Google Patents

Abstract

To provide a hair iron capable of suppressing a damage on the hair.SOLUTION: In a hair iron 30 provided with a heating element 38 for warming a human body, a casing 40 is provided on the heating element 38, and the upper surface of the casing 40 is coated with a cover sheet 41 having a small frictional coefficient.SELECTED DRAWING: Figure 9

Description

The present invention relates to a hair iron that heats hair, scalp, and other parts of the body for beauty purposes.

Hair dryers are commonly used to dry hair and the scalp, straightening irons are commonly used to straighten hair, and curling irons are commonly used to curl hair.

Registered Utility Model No. 3011964 Japanese Patent Application Publication No. 2018-15539

The object of the present invention is to provide a hair iron that can reduce damage to hair.

In order to achieve the above object, in the present invention, in a hair iron provided with a heat source for warming the human body, a casing is provided on the heat source, and the upper surface of the casing is covered with a cover sheet having a small coefficient of friction. did.

The cover sheet was made of polytetrafluoroethylene.
A far-infrared ray generating body is attached to the heat source and is housed in the casing, and a far-infrared ray passing portion is provided in the casing.

As described above, according to the present invention, the effect of suppressing hair damage is exhibited.

Side view of a hair dryer. Cross-sectional view of the blower tube portion. FIG. FIG. FIG. 3 is a sectional view showing a molded body unit. FIG. A side view showing a straightening iron. FIG. 3 is a plan view showing a portion of a far-infrared ray generating unit. A cross-sectional view of the iron piece. A side view showing a curling iron. The perspective view which shows a curling iron. Cross-sectional view of the heating section.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments embodying the present invention will be described based on the drawings.
(First embodiment)
A first embodiment in which the present invention is embodied in a hair dryer (hereinafter referred to as a dryer) 10 will be described based on FIGS. 1 to 5.

As shown in FIG. 1, a motor chamber 13 that houses a motor (not shown) and a sirocco fan (not shown) rotated by the motor is located at the base end of a housing 12 having a handle 11 of the dryer 10. The handle 11 is provided with an adjustment switch 15 for starting and stopping the motor and a heating element 18 (described below) and for adjusting the heat temperature of the heating element 18. A changeover switch 14 is provided near the adjustment switch 15 for switching the dryer 10 between a hot air supply state and a cold air supply state.

A blower tube 16 is formed in the housing 12 and extends forward from the motor chamber 13. As shown in FIGS. 2 and 3, a support member 17 having a cross-shaped cross section and made of mica or the like and having nonflammability, heat resistance, and electrical insulation properties is fixedly arranged inside the blower tube 16. A heating element 18 made of nichrome wire is spirally wound around the outer periphery of the support member 17 so as to enclose the support member 17 . When the motor is driven, external air is sucked into the motor chamber 13 from the intake port 19 on the side surface of the motor chamber 13, and the air is sent into the blower tube 16. This air is heated within the blast tube 16 by a heating element 18 and is sent out from the front end opening of the blast tube 16.

A stay 21 is attached to the center of the front end of the support member 17, at the axial center of the wound region of the heating element 18, and a temperature sensor 22, which is a human sensor, is supported on the front end of this stay 21. This temperature sensor 22 faces forward and detects the temperature of the user's scalp or hair located in front of the temperature sensor 22 when the dryer 10 is in use. The heating temperature of the heating element 18 is then automatically adjusted according to the detection result. Therefore, even if hot air is continuously supplied to one spot such as the scalp or hair, overheating of that spot can be prevented, and if high and low temperatures are alternately supplied in accordance with the temperature detection, the cuticle can be tightened to ensure the cuticle's gloss effect and promote appropriate blood circulation in the scalp.

A far-infrared generating unit 23 is installed behind the temperature sensor 22. As shown in Figures 2 to 5, this far-infrared generating unit 23 comprises a rectangular cylindrical casing 26 that is open at both the front and rear ends, and a molded body unit 24 housed within the casing 26. Note that in Figure 2, the cross section of the far-infrared generating unit 23 is shown without showing the temperature sensor 22. The casing 26 is made of phenolic resin that contains carbon components, and is rectangular cylindrical with both the front and rear open. The front opening of the casing 26 forms the passage for far-infrared rays.

The molded body unit 24 is composed of a rectangular parallelepiped carbon molded body (hereinafter simply referred to as the molded body) 25 and a cover sheet 27 that covers the periphery of the molded body 25. The molded body 25 is made of high-purity graphite. The cover sheet 27 is made of polytetrafluoroethylene (hereinafter referred to as Teflon, a trademark), which is a compound of fluorine and carbon, and is wound around the outer periphery of the molded body 25 so as to cover both the upper and lower surfaces and both the front and rear surfaces of the molded body 25. Therefore, the sides of the molded body 25 at the front and rear openings of the casing 26 are covered by the cover sheet 27, and the cover sheet 27 is interposed between the outer periphery of the molded body 25 and the inner periphery of the casing 26.

The dryer 10 of this embodiment operates as follows.
When the dryer 10 is in use, the heating element 18 generates heat, and hot air heated by the heating element 18 is discharged forward from the tip opening of the blower tube 16. This hot air can be used to dry and style hair. At this time, the molded body 25 is surrounded on all four sides by the heating element 18 and heated by the heating element 18, so that far infrared rays are generated from the molded body 25. These far infrared rays are then transmitted through the cover sheet 27 and supplied to the outside from the front opening of the casing 26. In addition, since the cover sheet 27 contains a carbon component, it is heated by the heat of the heating element 18 and the far infrared rays from the molded body 25, and generates far infrared rays.

In this way, far infrared rays are supplied to the user from the opening of the casing 26. Furthermore, since the casing 26 is made of phenolic resin containing carbon components, the casing 26 also generates far infrared rays due to the heat from the heating element 18. Therefore, these far infrared rays can be used, together with the heat of the warm air, to dry and style the hair.

Therefore, the dryer 10 of this embodiment has the following effects.
(1) In the dryer 10 of this embodiment, when heating by the heating element 18, the far infrared rays generated from the molded body 25 can support hair drying, hair style setting, etc. Therefore, the amount of heat generated by the heating element 18 can be reduced, power consumption can be saved, and damage to the scalp and hair can be reduced. That is, when far infrared rays, which are a type of electromagnetic waves, are supplied to the hair and scalp, the moisture inside the hair and scalp is heated by micro-vibration resonance, so the heating element 18 is not heated to a very high temperature. However, it can effectively dry the skin and promote blood circulation. In this way, when hair is dried or set, excessive heating of the hair and scalp by the heating element 18 is prevented, and low-temperature drying and low-temperature setting are possible, thereby avoiding heat damage to the hair and scalp and improving the skin. and can promote hair care. Moreover, since far-infrared rays support the temperature of the hot air, even if the hot air is at a low temperature, drying and setting can be performed efficiently in a short time. Furthermore, far infrared rays can easily reach the scalp even from a distance, warm the scalp appropriately, and are useful for promoting blood circulation.

(2) Even if the molded body 25 is made of graphite, which is a brittle material, physical external force acts on the molded body 25 because the molded body 25 is housed in the hard casing 26 made of phenolic resin. This makes it possible to protect the molded body 25 and prevent brittle fracture of the molded body 25. Therefore, the far-infrared ray generation function is not impaired, and it is possible to prevent the skin from being contaminated by the broken graphite powder or granules. In addition, since the front surface of the molded body 25, that is, the portion located at the front open portion of the casing 26, is covered with the cover sheet 27, some of the carbon particles constituting the molded body 25 become soot-like and scatter. This can prevent stains on the skin and the like as described above.

(3) Since the cover sheet 27, which is more flexible than the casing 26, is interposed between the molded body 25 and the casing 26, the physical external force applied to the molded body 25 is buffered by the cover sheet 27. Therefore, the protective function for the molded body 25 can be further enhanced. Moreover, since the cover sheet 27 covers the molded body 25 at the opening of the casing 26, the molded body 25 can be protected more reliably. Therefore, even if the dryer 10 is dropped on a hard floor surface, the molded body 25 can be effectively protected without cracking.

(4) The cover sheet 27 is made of Teflon containing carbon components, so not only does it transmit far-infrared rays, but as described above, the heat from the heating element 18 also causes far-infrared rays to be generated from the cover sheet 27. In addition, the cover sheet 27 is heated by the far-infrared rays from the molded body 25, and generates further far-infrared rays. Also, the casing 26 is made of phenolic resin containing carbon components, so the heat from the heating element 18 also causes far-infrared rays to be generated from the casing 26. Therefore, the far-infrared rays can provide appropriate support for drying and styling hair.

(5) Since the cover sheet 27 is made of heat-resistant Teflon, it has excellent durability.
(6) Since the molded body unit 24 having the molded body 25 is located at the center of the winding area of the heat generating element 18, the molded body unit 24 does not obstruct the air flow passing over the heat generating body 18, and the air flow is smooth. You can get a flow of warm air. Moreover, since the molded body unit 24 can obtain effective radiant heat almost uniformly from around the 360 degree range, a sufficient amount of far infrared rays can be generated.

(7) The molded body 25 is lighter than a ceramic having the same volume that generates far-infrared rays, and therefore can contribute to reducing the weight of the dryer 10.
Second Embodiment
Next, a second embodiment of the present invention, in which the present invention is embodied in a straightening iron 30 that is a hair iron, will be described with reference to FIGS.

As shown in Figures 6 and 7, in the straightening iron 30, a pair of iron pieces 31 are connected at the base end so that they can be opened and closed. One of the iron pieces 31 is provided with a start switch 32 and an adjustment switch 33 for adjusting the heating temperature of the heating element 38 described below.

As shown in FIGS. 8 and 9, recesses 34 are formed in the opposing surfaces of the tips of both ironing pieces 31, and a far-infrared ray generating unit 35 is housed and fixed in these recesses 34. The far-infrared generating unit 35 includes a bottom member 36 located on the inner bottom side of the recess 34, a leaf spring 37 located inside the bottom member 36, and a heating element 38 made of a ceramic heater located on the leaf spring 37. , and a molded body unit 24 located above the heating element 38. The molded body unit 24 constitutes a part of the far-infrared ray generation unit 35. The molded body unit 24 includes a plate-shaped molded body 39 and a casing 40 that covers the molded body 39 and has a heat sink function.A cover sheet 41 made of Teflon is pasted on the upper surface of the casing 40. It is worn. An elastic mass 46 made of silicone rubber is interposed between the inner bottom surface of the recess 34 and the far-infrared ray generating unit 35.

The molded body 39 is made of high-purity graphite as in the previous embodiment, and the casing 40 is made of a metal with good thermal conductivity, such as aluminum or an aluminum alloy. Fixed side stoppers 42 are formed on both sides of the bottom member 36, and movable side stoppers 43 are formed on both sides of the casing 40, facing the inner surface of the fixed side stoppers 42. The plate spring 37 presses the heating element 38 against the molded body 39 without any gaps, and the molded body 39 is pressed against the seating surface 45 on the inner surface of the casing 40 without any gaps, and the casing 40 is urged toward the protruding side until its position is restricted by the fixed side stopper 42. The casing 40 has a plurality of through holes 44 formed opposite the heating element 38. These through holes 44 form a passage for far infrared rays.

When the straightening iron 30 is in use, the casing 40 is heated by the heat of the heating element 38, and the cover sheet 41 is also heated. At this time, far-infrared rays are generated from the molded body 39, which pass through the through holes 44 of the casing 40, penetrate the cover sheet 41, and are released to the outside. The cover sheet 41 is heated by the far-infrared rays and the heating element 38, and generates far-infrared rays.

Therefore, by closing the iron pieces 31 and gripping the hair, the straightening iron 30 can be slid along the length of the hair in a combing motion to straighten the hair. In this case, the far-infrared generating unit 35 is raised and lowered like a suspension, utilizing the elastic deformation and repulsive force of the leaf spring 37 and the elastic mass 46, so that excessive force is not applied to the hair.

In addition to the heating temperature from the heating element 38, a large amount of far infrared rays is supplied to the hair, so that the hair can be effectively heated from the inside by the far infrared rays, which are electromagnetic waves, and set straight without having to raise the heating temperature too much, i.e., even if the heating temperature is low. This prevents the hair from carbonizing, minimizing damage to the hair.

Therefore, in this embodiment, the following effects can be obtained.
(1) Since the far infrared rays from the molded body 39 and the cover sheet 41 can be used to set the hair, the hair can be set appropriately without increasing the heating temperature, as described above. This allows the setting to be done in a short time, and the hair can be kept at an appropriate moisture content by reducing the evaporation of moisture from the hair, greatly reducing damage to the hair. This allows the hair to retain its luster, and prevents split ends and discoloration as much as possible.

(2) Since the surface of the casing 40 is covered with the cover sheet 41 made of Teflon, which has a small coefficient of friction, the hair can be stretched smoothly with little resistance. Therefore, as mentioned above, damage to the hair can be suppressed, the gloss of the hair can be maintained, split ends and discoloration can be avoided as much as possible, and the resistance to the ironing operation is reduced, making it possible to set the hair smoothly and easily. Can be done.

(3) Since the through hole 44 is formed in the casing 40, the far infrared rays generated from the molded body 39 easily reach the cover sheet 41 through the through hole 44. Therefore, far-infrared rays are not only transmitted through the cover sheet 41 and emitted, but the far-infrared rays promote heat generation in the cover sheet 41, and a large amount of far-infrared rays are generated to be used for ironing.

(4) Since the through hole 44 of the casing 40 is blocked by the cover sheet 41, water droplets and moisture are prevented from entering the straightening iron 30 through the through hole 44 even when ironing wet hair. As a result, the electrical components inside the straightening iron 30 can be protected.

(5) The molded body 39 is housed in the casing 40 via the leaf spring 37, and the casing 40 is covered with a flexible cover sheet 41. Furthermore, the far-infrared ray generating unit 35 having the molded body 39 is received by the ironing piece 31 by an elastic mass 46 made of silicone rubber. Therefore, even if the ironing pieces 31 are handled roughly, for example, even if the ironing pieces 31 are forcefully closed and the ironing pieces 31 collide with each other, the impact will be applied to the cover sheet 41, the leaf spring 37, and the elastic mass 46. Since the particles are absorbed at a plurality of locations, cracks in the molded body 39 can be appropriately avoided.

Third Embodiment
Next, a third embodiment of the present invention, in which the present invention is embodied in a curling iron 50 as a hair iron, will be described with reference to FIGS.

As shown in Figures 10 and 11, the curling iron 50 comprises a rod-shaped iron body 51 with a cylindrical circumferential surface, and a presser lever 53 connected to the iron body 51 at its base end by a shaft 52 so as to be able to open and close. The iron body 51 comprises a handle portion 54 and a heating portion 55 constituting a far-infrared radiation generating unit, and the handle portion 54 is provided with a start switch 56 and an adjustment switch 57 for adjusting the temperature of the heating element 67 described below. The presser lever 53 comprises an operating portion 58 and a presser portion 59 with an arc-shaped cross section that fits along the outer circumferential surface of the heating portion 55 of the iron body 51.

As shown in FIGS. 11 and 12, the heating unit 55 includes a pair of semi-cylindrical casings 61 that are made of a metal with good thermal conductivity, such as aluminum or an aluminum alloy, and that constitute a heat sink. The entire outer periphery of is covered with a cylindrical cover sheet 60 made of Teflon. A bar-shaped sealing material 62 closes the space between both side edges of both casings 61 . A plurality of through holes 63 are arranged in a row in the center portions of both casings 61 in the width direction, which constitute far-infrared rays passing portions. A seating surface 64 is formed inside the area where the through holes 63 are arranged.

A pair of receiving portions 65 are formed inside both casings 61, and a receiving plate 66 is supported between both receiving portions 65 via a leaf spring 69. A plate-shaped heating element 67 made of a ceramic heater is supported on the receiving plate 66, and a plate-shaped molded body 68 made of graphite is supported on the heating element 67. The spring force of the leaf spring 69 presses the heating element 67 against the molded body 68 without any gaps, and the molded body 68 is pressed against the seating surface 64 without any gaps, so that the molded body 68 is seated on the seating surface 64. The casing 61 constitutes a housing for the molded body 68.

When curling hair using the curling iron 50 of this embodiment, the two heating elements 67 arranged 180 degrees apart generate heat, and the entire formed body 68, casing 61, and cover sheet 60, i.e., the entire heating section 55, are heated. Then, the hair is wrapped around the heating section 55 of the iron body 51, and the hair is clamped between the heating section 55 and the presser lever 53. In this way, the hair is heated and set in a curled state. At this time, far-infrared rays are generated from the formed body 68, and the far-infrared rays reach the cover sheet 60 through the through holes 63, pass through the cover sheet 60, and are released to the outside. The cover sheet 60 also generates heat due to the far-infrared rays, and is heated by the heat of the heating elements 67 to release far-infrared rays. Therefore, when setting hair in curls, in addition to direct heating by the heating elements 67, support heating by far-infrared rays can be performed.

Therefore, in this embodiment, it is possible to obtain the same functions and effects as in the second embodiment.
(Example of change)
The present invention is not limited to the configurations of the above-described embodiments, and can also be embodied in the following aspects.

- In the first embodiment, the casing 26 is made of a material that generates far infrared rays, such as Teflon, PPS (polyphenylene sulfide resin), or carbon-reinforced resin, other than phenolic resin.

In the first embodiment, the stay 21 and the temperature sensor 22 at the front end opening of the blower tube 16 may be omitted, and a far-infrared generating unit 23 having a molded body 25 may be provided in that portion.
In the first embodiment, the molded body 25 has a rectangular parallelepiped shape, but the shape of the molded body 25 may be changed to a cube, a sphere, a cylinder, a prism, a polyhedron other than a hexahedron, or the like. In this case, it is preferable to change the shape of the casing 26 in accordance with the shape of the molded body 25.

- In the first embodiment, the casing 26 is shaped like a rectangular tube with the front and rear sides open, but the casing 26 only needs to be open at the front side, and may be closed at the rear side.
- In the third embodiment, the molded body 68 is directed only toward the casing 61 side on the lever side.

- In the third embodiment, the molded body 68 has an arcuate cross section along the inner peripheral surface of the casing 61.
- In each of the first to third embodiments, instead of the cover sheets 27, 41, and 60 made of Teflon, a material that easily transmits far infrared rays, such as a material made of high-density polyethylene, is used.

- As a heating beauty appliance, the present invention is applied to a heating beauty appliance other than the dryer 10, straight iron 30, and curling iron 50 of each of the above embodiments, for example, a hair dryer that has a comb and releases air from the base of the comb teeth. to embody it.

- The molded bodies 25, 39, and 68 should be made of something other than graphite, such as ceramics such as alumina resin, or diatomaceous earth.
The following are descriptions of paragraphs 0001, 0002, 0004-0008 (paragraph 0047 in the specification immediately before division) of the original specification of the original application and the claims of the original application.

This technical concept relates to a heating beauty appliance such as a hair dryer or a hair iron that heats a part of the body such as the hair or scalp for beauty purposes.
Hair dryers are commonly used to dry hair and the scalp, straightening irons to straighten hair, and curling irons to curl hair. However, for example, the scalp secretes less with age and loses moisture. Therefore, if the scalp is exposed to high-temperature hot air from a dryer, the scalp becomes too dry, causing itching and other problems. In addition, hair becomes less moist and thinner with age, and as a result, it becomes discolored and split ends occur when heated to a high temperature. To prevent this, in Patent Documents 1 and 2, a carbon molded body for generating far-infrared rays is provided in a hair dryer, so that the heating effect is supported by the far-infrared rays even when the heating temperature is low.

However, carbon molded bodies are fragile and vulnerable to impacts and abrasions. Therefore, when subjected to external forces, the carbon molded body may be subject to brittle fracture, cracking, or part of the carbon may break into powder or granules and separate. In such cases, there is a risk that the user's skin may be stained black. In Patent Document 1, the carbon molded body is covered with a coating agent to address this issue, but the coating agent is not strong enough and the above-mentioned concerns cannot be eliminated. Furthermore, depending on the material of the coating agent, it may block far infrared rays, resulting in a significant reduction in the heating support effect of far infrared rays.

The purpose of this technical concept is to provide a warming beauty device that can prevent damage to far-infrared ray generators such as carbon molded bodies, while also providing the appropriate heating support effect of far-infrared rays.

In order to achieve the above object, the present technical idea provides a heating beauty appliance that is provided with a heat source for warming the human body and has a far-infrared ray generator attached to the heat source, in which the far-infrared ray generator is placed in a casing. The casing is characterized by having a far-infrared ray passage section.

In the above configuration, when the heat source generates heat, the human body is heated by that heat, and the temperature is used for beauty treatment. At this time, far-infrared rays are generated from the far-infrared ray generator by the heat of the heat source. The far-infrared rays then reach the human body through the far-infrared ray passage. Therefore, the heating is supported by the far-infrared ray. Moreover, since the far-infrared ray is radiated directly to the human body without using air as a medium, heating can be performed without causing losses such as heating the medium air or diffusing heat through the medium air, improving heating efficiency. And, since the far-infrared ray generator is housed in a casing, damage is avoided.

As described above, according to the present technical idea, it is possible to prevent the far-infrared ray generator from being damaged, and at the same time, it is possible to appropriately obtain the heating effect of the far-infrared rays.
Claim 1 originally filed in the original application is a heating beauty appliance which is provided with a heat source for warming a human body and has a far-infrared ray generator attached to the heat source, wherein the far-infrared ray generator is accommodated in a casing, This is a heating beauty device that has a far-infrared ray passage section in its casing.

Claim 2 of the original application is the warming beauty device according to claim 1, in which the far-infrared ray generator is made of a carbon molded body, and the carbon molded body is covered with a cover sheet through which far-infrared rays are transmitted.

Claim 3 of the original application is a warming beauty device as described in claim 1, in which a through hole is formed in the casing and the outer surface of the casing is covered with a cover sheet that transmits far infrared rays so as to cover the through hole.

10...hair dryer, 18...heat source, 23...heating element, 25...carbon molded body, 26...casing, 27...cover sheet, 30...straightening iron, 38...heating element, 39...molded body, 40...casing, 41...cover sheet, 44...through hole, 50...curling iron, 60...cover sheet, 61...casing, 63...through hole, 67...heating element, 68...molded body.

Claims (3)

In a hair iron equipped with a heat source to warm the human body,
A hair iron, wherein a casing is provided on the heat source, and the upper surface of the casing is covered with a cover sheet having a small coefficient of friction. The hair iron according to claim 1, wherein the cover sheet is made of polytetrafluoroethylene. 3. The hair iron according to claim 1, wherein a far-infrared ray generator is attached to the heat source, the far-infrared ray generator is housed in the casing, and the casing is provided with a far-infrared ray passage section.