WO2022102369A1

WO2022102369A1 - Hair iron

Info

Publication number: WO2022102369A1
Application number: PCT/JP2021/038996
Authority: WO
Inventors: 将吾井上; 貴史宮口
Original assignee: 京セラ株式会社
Priority date: 2020-11-10
Filing date: 2021-10-21
Publication date: 2022-05-19

Abstract

This hair iron comprises a plurality of heaters and a cylindrical body. The plurality of heaters each have a heating resistive body on a plate-like ceramic base body. The cylindrical body accommodates the plurality of heaters. The plurality of heaters are each located adjacent to the cylinder axis of the cylindrical body.

Description

hair iron

The embodiment of disclosure relates to hair irons.

Conventionally, a hair iron that shapes the hair by using the heat generated by the heater housed inside is known.

Japanese Unexamined Patent Publication No. 2018-33822 Utility Model Registration No. 3190112 Gazette

The hair iron according to one aspect of the embodiment includes a plurality of heaters and a tubular body. The plurality of heaters have a heat generation resistor on a plate-shaped ceramic substrate. The tubular body accommodates the plurality of heaters. Each of the plurality of heaters is located closer to the cylindrical body than the cylindrical shaft of the tubular body.

FIG. 1A is a perspective view showing a hair iron according to an embodiment. FIG. 1B is a cross-sectional view taken along the line AA shown in FIG. 1A. FIG. 2 is a cross-sectional view of the hair iron according to the first modification of the embodiment. FIG. 3 is a cross-sectional view of the hair iron according to the second modification of the embodiment. FIG. 4 is a cross-sectional view of the hair iron according to the modified example 3 of the embodiment. FIG. 5 is a cross-sectional view of the hair iron according to the modified example 4 of the embodiment. FIG. 6 is a cross-sectional view taken along the line BB shown in FIG. FIG. 7 is a cross-sectional view of the hair iron according to the modified example 5 of the embodiment. FIG. 8A is a cross-sectional view of the hair iron according to the modified example 6 of the embodiment. FIG. 8B is a plan view of the temperature sensor and the heater included in the hair iron shown in FIG. 8A. FIG. 9 is a cross-sectional view of the hair iron according to the modified example 7 of the embodiment. FIG. 10 is a cross-sectional view of the hair iron according to the modified example 8 of the embodiment.

Hereinafter, embodiments of the hair iron disclosed in the present application will be described with reference to the attached drawings. The present disclosure is not limited to the embodiments shown below. In addition, it should be noted that the drawings are schematic, and the relationship between the dimensions of each element, the ratio of each element, etc. may differ from the reality. Further, there may be a portion where the relations and ratios of the dimensions of the drawings are different from each other.

<Embodiment>
First, the hair iron according to the embodiment will be described with reference to FIGS. 1A to 1B. 1A is a perspective view showing a hair iron according to an embodiment, and FIG. 1B is a cross-sectional view taken along the line AA shown in FIG. 1A.

As shown in FIGS. 1A and 1B, the hair iron 1 according to the embodiment includes a tubular body 10, a heater 20, a clip 30, a clip lever 35, and a main body 40.

For the sake of clarity, FIGS. 1A and 1B illustrate a three-dimensional Cartesian coordinate system including a Z-axis in which the base end direction of the curling iron 1 is the positive direction and the tip end direction is the negative direction. ing. Such a Cartesian coordinate system is also shown in other drawings used in the later description.

The tubular body 10 accommodates the heater 20. In addition, hair is wrapped around the outside of the tubular body 10. The tubular body 10 is a cylindrical member having a tubular axis in the length direction of the hair iron 1. The material of the tubular body 10 may be a metal such as an aluminum alloy.

The heater 20 is a plate-shaped member that is long in the length direction of the hair iron 1. The heater 20 has a ceramic substrate 201 and a heat generation resistor 202. The heater 20 raises the temperature by transferring heat from the heat generation resistor 202 generated by energization to the ceramic substrate 201.

The ceramic substrate 201 is, for example, a plate-shaped member having a rectangular main surface and a predetermined thickness. The material of the ceramic substrate 201 is, for example, a ceramic having an insulating property. As the material of the ceramic substrate 201, for example, alumina, silicon nitride, or aluminum nitride can be used. Further, the heat generation resistor 202 may be a heater pattern including a high resistance conductor including, for example, tungsten, molybdenum and the like. The heat generation resistor 202 may be located, for example, on the main surface of the ceramic substrate 201 facing the tubular body 10. Further, the heat generation resistor 202 may be located on the main surface of the ceramic substrate 201 located on the opposite side of the tubular body 10, or may be located inside the ceramic substrate 201.

The hair iron 1 according to the embodiment has a plurality of heaters 20. Although FIG. 1B shows an example having four heaters 20, the hair iron 1 may have two or more heaters 20, and the number of heaters 20 is not limited.

The plurality of heaters 20 are located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10. In other words, the heater 20 extends from the cylinder axis of the cylinder 10 extending along the Z axis to the cylinder 10 rather than the distance from the cylinder 10 to the cylinder 10 in the cross section perpendicular to the cylinder axis of the cylinder 10. The distance is small. Since the plurality of heaters 20 are located closer to the cylindrical body 10 than the cylindrical shaft of the tubular body 10, the heat generated by each of the plurality of heaters 20 is easily transferred to the tubular body 10, so that the temperature rises. Performance can be improved.

Further, the plurality of heaters 20 are fixed to, for example, the fixing member 11. The fixing member 11 is located inside the tubular body 10. The fixing member 11 is attached to the inner peripheral surface 10a of the tubular body 10, and fixes the plurality of heaters 20 closer to the tubular body 10 than to the plurality of heaters 20. The fixing member 11 is a plate-shaped member made of a metal such as stainless steel. The plurality of heaters 20 are fixed to the inner surface side of the fixing member 11. The fixing member 11 may be a plurality of members for fixing the plurality of heaters 20 respectively. For example, the plurality of heaters 20 may be fixed so as to be sandwiched between the fixing member 11 and a support member (not shown).

The clip 30 is located on the negative side of the X-axis of the tubular body 10. The clip 30 is used to pinch the hair in the gap with the tubular body 10.

The clip lever 35 is located on the base end side of the clip 30. The clip 30 moves according to the operation of the clip lever 35, and the distance from the tubular body 10 changes. Therefore, the user holding the curling iron 1 can pinch the hair between the clip 30 and the tubular body 10 or remove the pinched hair by operating the clip lever 35.

The main body 40 is a handle that the user picks up when using the curling iron 1. Inside the main body 40, electronic components such as a control board and a power fuse are housed.

<Modification 1>
FIG. 2 is a cross-sectional view of the hair iron according to the first modification of the embodiment. The curling iron 1 shown in FIG. 2 is different from the curling iron 1 according to the embodiment in that it has a tubular body 13 instead of the fixing member 11. The tubular body 13 is a holding portion that holds a plurality of heaters 20. The tubular body 13 is mounted inside the tubular body 10, for example, so that the tube shaft overlaps the tubular shaft of the tubular body 10. The material of the tubular body 13 may be, for example, a metal such as stainless steel or a heat-resistant resin. The plurality of heaters 20 are held on the outer peripheral surface of the tubular body 13 via an adhesive member or an adhesive material (not shown) such as double-sided tape.

Further, since the plurality of heaters 20 are located on the outer peripheral surface of the tubular body 13, the plurality of heaters 20 are located closer to the tubular body 10 than the tubular shaft of the tubular body 10. As a result, the heat generated by each of the plurality of heaters 20 is easily transferred to the tubular body 10, so that the temperature rising performance can be improved.

<Modification 2>
FIG. 3 is a cross-sectional view of the hair iron according to the second modification of the embodiment. The hair iron 1 shown in FIG. 3 has a plurality of heaters 20 located closer to the tubular body 10 than the tubular body 10's tubular shaft. The plurality of heaters 20 may have heaters 21 located facing the clips 30 with the tubular body 10 interposed therebetween.

The clip 30 is in contact with or close to the outer circumference of the tubular body 10. When the temperature of the cylindrical body 10 is high due to the heat generated by the plurality of heaters 20, a part of the heat of the tubular body 10 in contact with or close to the clip 30 having a temperature lower than that of the tubular body 10 is transferred to the clip 30. do. For this reason, the temperature of the tubular body 10 that is in contact with or close to the clip 30 tends to decrease as compared with other parts of the tubular body 10.

In the hair iron 1 shown in FIG. 3, as described above, the plurality of heaters 20 have the heaters 21 located facing the clips 30. This makes it possible to accurately heat the tubular body 10 close to the clip 30 which is more likely to dissipate heat than other parts. Therefore, according to the hair iron 1 according to the present modification, for example, the heat equalizing property of the tubular body 10 can be improved.

Further, among the plurality of heaters 20, the heater facing the clip 30 may have a larger width direction intersecting the cylinder axis than the other heaters 20. As shown in FIG. 3, among the plurality of heaters 20, the width L1 of the heater 21 facing the clip 30 may be larger than the width L2 of the other heaters 20.

In this way, by making the width L1 of the heater 21 facing the clip 30 larger than the width L2 of the other heater 20, the amount of heat generated from the heater 21 can be made larger than the amount of heat generated by the other heater 20. can. Therefore, according to the hair iron 1 according to the present modification, for example, the heat equalizing property of the tubular body 10 can be further improved.

<Modification 3>
FIG. 4 is a cross-sectional view of the hair iron according to the modified example 3 of the embodiment. As shown in FIG. 4, the hair iron 1 is positioned so as to face the clip 30 with the tubular body 10 sandwiched between the plurality of heaters 20 located closer to the tubular body 10 than the tubular body 10's tubular axis. It may have a plurality of

heaters

22 and 23.

In this way, by facing the plurality of

heaters

22 and 23 with the clip 30, it is possible to accurately heat the tubular body 10 close to the clip 30 which is more likely to dissipate heat than other parts. Therefore, according to the hair iron 1 according to the present modification, for example, the heat equalizing property of the tubular body 10 can be improved.

<Modification example 4>
FIG. 5 is a cross-sectional view of the hair iron according to the modified example 4 of the embodiment. FIG. 6 is a cross-sectional view taken along the line BB shown in FIG. As shown in FIGS. 5 and 6, a plurality of heaters 20 located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10 have a heater 24 facing the clip 30. The heater 24 may have a shorter distance from the inner peripheral surface 10a of the tubular body 10 than the other heaters 20. As shown in FIGS. 5 and 6, the hair iron 1 includes a heater 24 facing the clip 30 among a plurality of heaters 20 located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10. The distance L3 from the peripheral surface 10a may be shorter than the distance L4 between the other heater 20 and the inner peripheral surface 10a.

In this way, by moving the heater 24 facing the clip 30 closer to the tubular body 10 than the other heater 20, the tubular body 10 close to the clip 30 which is more easily dissipated than other parts is heated accurately. can do. Therefore, according to the hair iron 1 according to the present modification, for example, the heat equalizing property of the tubular body 10 can be improved.

In FIG. 5, the heater 24 facing the clip 30 is positioned between the fixing member 11 and the tubular body 10 to reduce the distance from the tubular body 10, but the distance is not limited to this and is fixed in advance. The distance between the

heaters

20 and 24 and the tubular body 10 may be restricted by changing the shape of the member 11.

Further, as shown in FIG. 6, among the plurality of heaters 20, the heater 24 facing the clip 30 has a tubular body 10 from the clip lever 35 to the tubular body 10 more than the other heaters 20 in the cylindrical axial direction. It may be located near. As shown in FIG. 6, among the plurality of heaters 20, the distance L5 between the rear end 24b of the heater 24 facing the clip 30 and the clip lever 35 along the tubular axis direction (Z-axis direction) is the other heater 20. The distance between the rear end 20b and the clip lever 35 along the cylinder axis direction (Z axis direction) may be larger than the distance L6.

In this way, by making the distance L5 between the heater 24 and the clip lever 35 larger than the distance L6 between the other heater 20 and the clip lever 35, the clip lever 35 and / or the main body 40 can be affected by the heat from the heater 24. It is possible to reduce the problem of overheating.

In FIG. 6, the tip 24a of the heater 24 is the hair iron 1 more than the tip 20a of the other heater 20 so that the lengths of the heater 24 and the other heater 20 along the cylindrical axis direction of the tubular body 10 are the same. Although an example of projecting to the tip side (Z-axis negative direction side) of the above is shown, the present invention is not limited to this. For example, the length of the heater 24 along the cylindrical axis direction of the tubular body 10 is shortened so that the positions of the tip 24a of the heater 24 and the tip 20a of the other heater 20 in the cylindrical axis direction (Z-axis direction) are the same. You may.

<Modification 5>
FIG. 7 is a cross-sectional view of the hair iron according to the modified example 5 of the embodiment. As shown in FIG. 7, in the hair iron 1, among a plurality of heaters 20 located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10, the heater 25 facing the clip 30 is another heater. The output per unit volume may be larger than 20.

In this way, by increasing the output per unit volume of the heater 25 facing the clip 30 as compared with the other heater 20, the tubular body 10 closer to the clip 30 is more likely to dissipate heat than other parts. The amount of heat transferred to can be increased. Therefore, according to the hair iron 1 according to the present modification, for example, the heat equalizing property of the tubular body 10 can be improved.

For example, by making the resistance value of the heat generation resistor of the heater 25 smaller than the resistance value of the heat generation resistor of the other heater 20, the output per unit volume of the heater 25 is per unit volume of the other heater 20. Can be larger than the output. Further, the output per unit volume of the heater 25 may be larger than the output per unit volume of the other heater 20 by making the applied voltage different between the heater 25 and the other heater 20.

<Modification 6>
FIG. 8A is a cross-sectional view of the hair iron according to the modified example 6 of the embodiment. The curling iron 1 may include a temperature sensor 18 in contact with at least one of the plurality of heaters 20. The temperature sensor 18 detects the temperature of the heater 20 in contact with the temperature sensor 18. The hair iron 1 is controlled to supply power to the heater 20 from the outside according to the temperature of the heater 20 detected by the temperature sensor 18. As a result, the overheating of the heater 20 is reduced, and for example, the temperature of the tubular body 10 of the hair iron 1 in contact with the hair can be controlled accurately.

As shown in FIG. 8A, the temperature sensor 18 may be in contact with the heater 26 located away from the clip 30. As a result, overheating of the heater 26 located away from the clip 30 is reduced, and the tubular body 10 of the curling iron 1 in contact with the hair can be kept at an appropriate temperature. The temperature sensor 18 may be in contact with a heater 20 different from the heater 26.

Further, the temperature sensor 18 may be attached to the urging member 15. The urging member 15 is a holding portion that holds a plurality of heaters 20 at predetermined positions. The urging member 15 is located inside the tubular body 10, and the plurality of heaters 20 are held so as to be sandwiched between the fixing member 11 and the urging member 15. The urging member 15 holds the plurality of heaters 20 by urging the plurality of heaters 20 so as to press them against the fixing member 11. The material of the urging member 15 may be, for example, a metal such as stainless steel or a heat-resistant resin.

The urging member 15 may have a first portion 151 facing the heater 26 and to which the temperature sensor 18 is mounted. The temperature sensor 18 is urged so as to be pressed against the heater 26 by the urging member 15. As a result, for example, the heater 26 and the temperature sensor 18 can be brought into contact with each other without using an adhesive or the like, so that the temperature sensor 18 can be easily positioned.

FIG. 8B is a plan view of a temperature sensor and a heater included in the hair iron shown in FIG. 8A. In FIG. 8B, among the hair irons 1 shown in FIG. 8A, the heater 20 different from the fixing member 11, the clip 30, and the heater 26 is not shown.

As shown in FIG. 8B, the temperature sensor 18 is mounted on the mounting portion 151a located in the first portion 151 of the urging member 15. The mounting portion 151a may be, for example, an opening penetrating the first portion 151.

The temperature sensor 18 has a sensor unit 18a and a case 18b. The sensor unit 18a is, for example, a thermistor. The thermistor may be, for example, an NTC (Negative Temperature Coefficient) thermistor or a PTC (Positive Temperature Coefficient) thermistor.

The case 18b accommodates the sensor unit 18a. The material of the case 18b may be, for example, a silicone resin. Further, the case 18b may be made of a rubber material such as silicone rubber. As a result, the sensor portion 18a is protected by the case 18b, so that the strength of the temperature sensor 18 is improved.

In the temperature sensor 18, for example, the sensor portion 18a may come into contact with the heater 26, or the case 18b covering the sensor portion 18a may come into contact with the heater 26.

Further, the temperature sensor 18 may be in contact with the heater 26 closer to the base end 102 of the cylindrical body 10 in the tubular axial direction than the center 10c of the tubular body 10. The center 10c of the tubular body 10 is located between the tip end 101 and the base end 102 of the tubular body 10, and refers to an intersection of a plane (XY plane) perpendicular to the cylinder axis direction and the cylinder axis. Thereby, the tubular body 10 of the hair iron 1 can be kept at an appropriate temperature by controlling the temperature of the heater 26.

Further, among the plurality of heaters 20, the center 26c of the heater 26 located away from the clip 30 may be located closer to the tip 101 of the cylindrical body 10 in the cylindrical axial direction than the center 10c of the tubular body 10. good. The center 26c of the heater 26 is located between the front end 261 and the rear end 262 of the heater 26, and refers to an intersection of a plane (XY plane) perpendicular to the cylinder axis direction of the cylindrical body 10 and the cylinder shaft. Thereby, the tubular body 10 of the hair iron 1 can be kept at an appropriate temperature by controlling the temperature of the heater 26.

Further, the heater 26 has a heat generating region 26a. The heat generation region 26a may be located, for example, on the tip 101 side of the tubular body 10 in the cylindrical axial direction. This makes it easier to keep the tubular body 10 of the hair iron 1, for example, at an appropriate temperature. As for the other heater 20, the heat generating region can be positioned on the tip 101 side of the cylindrical body 10 in the cylindrical axial direction, similarly to the heater 26.

<Modifications 7 and 8>
FIG. 9 is a cross-sectional view of the hair iron according to the modified example 7 of the embodiment. FIG. 10 is a cross-sectional view of the hair iron according to the modified example 8 of the embodiment. The hair iron 1A shown in FIGS. 9 and 10 is different from the hair iron 1 shown in FIGS. 1B and 2, respectively, in that the hair iron 1A shown in FIGS. 9 and 10 is provided with a tubular heater 20A instead of the plurality of heaters 20.

The heater 20A is a tubular member that is long in the length direction of the hair iron 1. As shown in FIG. 9, the heater 20A has a cylindrical ceramic substrate 201 and a heat generation resistor 202. The heater 20A raises the temperature by transferring the heat generated from the heat generation resistor 202 generated by energization to the ceramic substrate 201. The heater 20A can be manufactured by using the same materials as the ceramic substrate 201 and the heat generation resistor 202 described as the heater 20. The heat generation resistor 202 may be located, for example, on the outer peripheral surface of the ceramic substrate 201 facing the cylindrical body 10. Further, the heat generation resistor 202 may be located on the inner peripheral surface of the ceramic substrate 201 or may be located inside the ceramic substrate 201, for example.

The heater 20A is located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10. By locating the heater 20A closer to the cylindrical body 10 than the cylindrical body 10 of the tubular body 10, the heat generated by the heater 20A is easily transferred to the tubular body 10, so that the temperature rising performance can be improved. can.

The heater 20A may be fixed to, for example, the fixing member 11 (see FIG. 9) or may be held by the tubular body 13 (see FIG. 10). This facilitates the positioning of the heater 20A housed inside the tubular body 10.

In FIGS. 9 and 10, the tubular body 10 and the heater 20A are located concentrically cylindrically, but the tubular body 10 and the heater 20A are not limited to this, and the tubular body 10 and the heater 20A extending in the Z-axis direction may be, for example. It may be positioned offset in the Y-axis direction and / or the X-axis direction. The shape of the heater 20A is not limited to a cylinder, and may be, for example, an elliptical cylinder or a square cylinder.

Further, the curling iron 1A may include a temperature sensor 18 (see FIG. 8A) in contact with the heater 20A. The temperature sensor 18 detects the temperature of the heater 20A. The hair iron 1A is controlled to supply power to the heater 20A from the outside according to the temperature of the heater 20A detected by the temperature sensor 18. As a result, the overheating of the heater 20A is reduced, and for example, the temperature of the tubular body 10 of the hair iron 1A in contact with the hair can be controlled accurately.

Although the embodiments and modifications of the present disclosure have been described above, the present disclosure is not limited to the above embodiments and modifications, and various changes can be made as long as the purpose is not deviated. For example, the plurality of heaters 20 shown in FIGS. 3 to 7 may be held by the tubular body 13 shown in FIG. Further, the arrangement of the heater 24 shown in FIG. 6 may be applied to the heater 20 (heaters 21 to 23, 25) according to other embodiments and modifications. Further, the arrangement of the temperature sensor 18 shown in FIGS. 8A and 8B may be applied to the heater 20 (heaters 21 to 25) according to other embodiments and modifications. Further, the above-described embodiment and other configurations described in each modification can be appropriately combined as long as there is no contradiction.

As described above, the hair iron 1 according to the embodiment includes a plurality of heaters 20 and a tubular body 10. The plurality of heaters 20 have a heat generation resistor 202 on a plate-shaped ceramic substrate 201. The tubular body 10 accommodates a plurality of heaters 20. Each of the plurality of heaters 20 is located closer to the tubular body 10 than the cylindrical shaft of the tubular body 10. Thereby, the temperature raising performance can be improved.

Further, the hair iron 1 according to the embodiment includes a fixing member 11. The fixing member 11 is located inside the tubular body 10, and fixes the plurality of heaters 20 closer to the tubular body 10 than to the plurality of heaters 20. Thereby, the temperature raising performance can be improved.

Further, the hair iron 1 according to the embodiment includes a holding portion. The holding portion is a tubular body 13 located inside the tubular body 10 and having an outer peripheral surface for holding a plurality of heaters 20. Thereby, the temperature raising performance can be improved.

Further, the hair iron 1 according to the embodiment includes a temperature sensor 18. The temperature sensor 18 is in contact with at least one of the plurality of heaters 20. Thereby, the temperature raising performance can be improved.

Further, in the hair iron 1 according to the embodiment, the temperature sensor 18 has a sensor unit 18a and a case 18b accommodating the sensor unit 18a. Thereby, the strength of the temperature sensor 18 can be improved.

Further, the hair iron 1 according to the embodiment includes a clip 30 that sandwiches the hair between the hair iron 1 and the tubular body 10, and at least one of the plurality of heaters 20 is located near the clip 30 and is attached to the clip 30. They are located facing each other. Thereby, the heat equalizing property of the tubular body 10 can be improved.

Further, in the hair iron 1 according to the embodiment, the heater 21 facing the clip 30 has a larger size in the width direction intersecting the cylinder axis than the other heaters 20. Thereby, the heat equalizing property of the tubular body 10 can be further improved.

Further, in the hair iron 1 according to the embodiment, the heater 25 facing the clip 30 has a larger output per unit volume than the other heaters 20. Thereby, the heat equalizing property of the tubular body 10 can be further improved.

Further, in the hair iron 1 according to the embodiment, the heater 24 facing the clip 30 has a shorter distance from the inner peripheral surface 10a of the tubular body 10 than the other heaters 20. Thereby, the heat equalizing property of the tubular body 10 can be further improved.

Further, the hair iron 1 according to the embodiment includes a clip lever 35 for operating the clip 30. The heater 24 facing the clip 30 is located farther from the clip lever 35 in the cylindrical axial direction of the tubular body 10 than the other heaters 20. This makes it possible to reduce the overheating of the clip lever 35.

Further, the hair iron 1 according to the embodiment includes a temperature sensor 18. The temperature sensor 18 is in contact with the heater 26 located away from the clip 30 among the plurality of heaters 20. Thereby, the temperature of the hair iron 1 can be controlled accurately.

Further, the hair iron 1 according to the embodiment includes a temperature sensor 18. The temperature sensor 18 is in contact with the heater 26 located away from the clip 30 closer to the base end 102 of the cylindrical body 10 in the cylindrical axial direction than the center 10c of the tubular body 10. Thereby, the temperature of the hair iron 1 can be controlled accurately.

Further, in the hair iron 1 according to the embodiment, the center 26c of the heater 26 located away from the clip 30 is located closer to the tip 101 side of the cylindrical body 10 in the cylindrical axial direction than the center 10c of the tubular body 10. There is. Thereby, the temperature of the hair iron 1 can be controlled accurately.

Further, the hair iron 1A according to the embodiment includes a heater 20A and a tubular body 10. The heater 20A has a heat generating resistor 202 on a cylindrical ceramic substrate 201. The tubular body 10 accommodates the heater 20A. The heater 20A is located away from the cylinder axis of the cylindrical body 10. Thereby, the thermal stress can be reduced.

Further effects and other aspects can be easily derived by those skilled in the art. For this reason, the broader aspects of the present disclosure are not limited to the particular details and representative embodiments described and described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents.

1,1A Curling iron 10 Cylindrical body 11 Fixing member 13 Tubular body 15 Energizing member 18 Temperature sensor 20, 21-26, 20A Heater 30 Clip 35 Clip lever 40 Main body

Claims

Multiple heaters with heat-generating resistors on a plate-shaped ceramic substrate,
A cylindrical body for accommodating the plurality of heaters is provided.
Each of the plurality of heaters is a hair iron located closer to the tubular body than the tubular shaft of the tubular body.
Equipped with fixing members
The hair iron according to claim 1, wherein the fixing member is located inside the tubular body and fixes the plurality of heaters closer to the tubular body than the plurality of heaters.
Equipped with a holding part
The hair iron according to claim 1 or 2, wherein the holding portion is a tubular body located inside the tubular body and having an outer peripheral surface for holding the plurality of heaters.
Equipped with a temperature sensor,
The hair iron according to any one of claims 1 to 3, wherein the temperature sensor is in contact with at least one of the plurality of heaters.
The hair iron according to claim 4, wherein the temperature sensor has a sensor unit and a case for accommodating the sensor unit.
A clip for sandwiching the hair with the tubular body is provided.
The hair iron according to any one of claims 1 to 5, wherein at least one of the plurality of heaters is located near the clip and is located facing the clip.
The hair iron according to claim 6, wherein the heater facing the clip has a larger size in the width direction intersecting the cylinder axis than other heaters.
The hair iron according to claim 6 or 7, wherein the heater facing the clip has a larger output per unit volume than other heaters.
The hair iron according to any one of claims 6 to 8, wherein the heater facing the clip has a shorter distance to the inner peripheral surface of the tubular body than the other heaters.
Equipped with a clip lever to operate the clip
The hair iron according to any one of claims 6 to 9, wherein the heater facing the clip is located farther from the clip lever in the cylindrical axial direction of the tubular body than the other heaters.
Equipped with a temperature sensor,
The hair iron according to any one of claims 6 to 10, wherein the temperature sensor is in contact with a heater located away from the clip among the plurality of heaters.
Equipped with a temperature sensor,
The temperature sensor is any one of claims 6 to 11 in which the temperature sensor is in contact with the heater located away from the clip closer to the base end in the cylindrical axis direction of the cylindrical body than the center of the tubular body. Hair irons listed in one.
The hair iron according to claim 11 or 12, wherein the center of the heater located away from the clip is located closer to the tip end side of the tubular body in the tubular axial direction than the center of the tubular body.
A heater with a heat-generating resistor on a cylindrical ceramic substrate,
It is provided with a cylindrical body for accommodating the heater.
The heater is a hair iron located closer to the tubular body than the tubular shaft of the tubular body.
The hair iron according to any one of claims 1 to 14, wherein the heat generating region of the heater is located on the tip end side in the cylindrical axial direction of the tubular body.