EP4042900A1 - Hair styling device - Google Patents

Hair styling device Download PDF

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Publication number
EP4042900A1
EP4042900A1 EP21157312.6A EP21157312A EP4042900A1 EP 4042900 A1 EP4042900 A1 EP 4042900A1 EP 21157312 A EP21157312 A EP 21157312A EP 4042900 A1 EP4042900 A1 EP 4042900A1
Authority
EP
European Patent Office
Prior art keywords
hair
hair styling
styling
temperature
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21157312.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Chuen Yu Cyrus PANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP21157312.6A priority Critical patent/EP4042900A1/en
Priority to CN202210136662.6A priority patent/CN114938881A/zh
Priority to US18/275,449 priority patent/US20240099439A1/en
Priority to KR1020237031446A priority patent/KR20230145179A/ko
Priority to PCT/EP2022/053564 priority patent/WO2022175213A1/en
Priority to EP22705060.6A priority patent/EP4294232A1/en
Priority to JP2023548649A priority patent/JP2024506654A/ja
Priority to CN202220332513.2U priority patent/CN218790999U/zh
Publication of EP4042900A1 publication Critical patent/EP4042900A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/06—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/28—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D6/00—Details of, or accessories for, hair-curling or hair-waving devices
    • A45D6/20—Devices for controlling the temperature of hair curlers

Definitions

  • the invention relates to a hair styling device comprising at least one hair styling component configured to face hair to be subjected to a styling action by means of the hair styling device, and a heating mechanism configured to heat the hair styling component.
  • a hair straightener comprises an arrangement of two hair styling components, which arrangement can be put to an opened position in which a distance between at least a portion of the hair styling surfaces of the hair styling components is sufficient to allow for insertion of hair between the hair styling surfaces, and to a closed position in which the distance between at least the portion of the hair styling surfaces of the hair styling components is minimal.
  • the hair styling components are hingably connected to each other. Further, it is practical if the hair styling components have a generally plate-like appearance and if the hair styling surfaces of the hair styling components have a generally flat appearance.
  • a hair straightener When a hair straightener is put to an activated state, the hair styling components are put to a heated state. Carrying out a hair straightening action by means of the hair straightener in the activated state involves making sure that the arrangement is in the opened position, placing the hair straightener with respect to the hair such that a strand of hair is received in the arrangement at a position close to the scalp, putting the arrangement to the closed position as a result of which the strand of hair is caught between the hair styling surfaces of the hair styling components, and pulling the hair straightener downwards on the strand of hair. In this way, it is achieved that the strand of hair is subjected to a heating action while the hair straightener is moved to glide along the hair, as a result of which the strand of hair is straightened.
  • a component temperature sensor that is configured to detect a temperature of a hair styling component, which is not accurate due to unknown factors such as the clamping pressure prevailing between the hair styling surfaces, the stroking speed, and the ambient temperature. For example, when a hair straightener is used on a strand of hair with a normal amount of moisture, the component temperature sensor will observe a certain temperature drop after the straightening stroke has been performed.
  • the invention provides a hair styling device comprising at least one hair styling component having a hair styling surface configured to face hair to be subjected to a styling action by means of the hair styling device, a heating mechanism configured to heat the hair styling component, a component temperature sensor configured to detect a temperature of the hair styling component, a hair temperature sensor configured to detect a temperature of hair faced by the hair styling surface during operation of the hair styling device, and a controller configured to receive inputs from at least both the component temperature sensor and the hair temperature sensor, and to process the inputs to control operation of the heating mechanism.
  • the hair styling device does not only comprise a component temperature sensor, but also a hair temperature sensor.
  • the controller of the hair styling device is configured to receive inputs from at least both the component temperature sensor and the hair temperature sensor, and to process the inputs to control operation of the heating mechanism. In this way, it is achieved that a temperature setting of the hair styling component that is appropriate in view of the moisture content of the hair can automatically be chosen and realized, so that a user of the hair styling device does not need to think about the temperature setting.
  • the invention also covers the option that the hair styling device comprises an indicator configured to provide a person with information including information related to the moisture content of the hair based on the inputs, and/or the option that the temperature setting can be manually adjusted.
  • the hair styling device comprises an indicator configured to provide a person with information including information related to the moisture content of the hair based on the inputs, and/or the option that the temperature setting can be manually adjusted.
  • controller is configured to involve a look-up table in generating the output that is indicative of the moisture content of the hair.
  • a look-up table as mentioned may reflect results from representative experiments performed in the context of the designing process of the hair styling device and aimed at linking detected values of parameters and/or calculated values of related parameters to a moisture content of hair under various circumstances, for example, for various known moisture levels of hair.
  • Detecting the hair temperature involves an interesting option of finding the start and the ending of a styling action, and to thereby find the duration of the styling action, assuming that sensible hair temperature values are only found during the time that hair is actually present on or in the vicinity of the hair styling surface of the hair styling component.
  • the controller may be configured to derive from the input from the hair temperature sensor a value that is representative of the time duration of a styling action, and to involve the value to control operation of the heating mechanism.
  • the controller may be configured to derive from the input from the component temperature sensor and the hair temperature sensor one or more of i) a value that is representative of the temperature of the hair styling component at the start of a styling action, ii) a value that is representative of a drop of the temperature of the hair styling component in the styling action, iii) a value that is representative of a drop of the temperature of the hair in the styling action, iv) a value that is representative of a peak temperature of the hair in the styling action, v) a value that is representative of a peak temperature of the hair styling component in the styling action, and vi) a difference between a value that is representative of a peak temperature of the hair in the styling action and a value that is representative of a peak temperature of the hair styling component in the styling action, and to involve the one or more of the values to control operation of the heating mechanism.
  • the component temperature sensor may be of any suitable type, and may be arranged at any appropriate location on or in the hair styling device, particularly any appropriate location on or in the hair styling component. In this respect, it is noted that it is possible that the component temperature sensor is arranged to detect a temperature of the hair styling component at the position of the hair styling surface thereof, but that it is also possible that the component temperature sensor is arranged to detect a temperature at the position of another area of the hair styling component.
  • the hair temperature sensor may be of the non-contact type, but the invention also covers the possibility of using a hair temperature sensor that is configured to detect the temperature of hair actually contacting the sensor. Something similar is applicable to the hair styling surface of the hair styling component. It may be practical if the hair styling surface of the hair styling component is configured to actually contact hair in a styling action, but that does not alter the fact that it is also possible that the hair styling surface of the hair styling component is configured to subject hair that is at a small distance from the hair styling surface to a styling action, for example, by radiating heat towards the hair.
  • the hair styling component may be of any suitable design.
  • the hair styling component may have a generally plate-like appearance and the hair styling surface may have a generally flat appearance.
  • the hair styling device comprises an arrangement of two hair styling components, which arrangement can be put to an opened position in which a distance between at least a portion of the hair styling surfaces of the hair styling components is sufficient to allow for insertion of hair between the hair styling surfaces, and to a closed position in which the distance between at least the portion of the hair styling surfaces of the hair styling components is minimal.
  • the arrangement may be configured to realize a styling action aimed at straightening the hair, so that the hair styling device can be used as a hair straightener.
  • the hair styling device comprises the arrangement as mentioned, it is possible that the hair styling device is equipped with a pressure sensor configured to detect a clamping pressure prevailing between the hair styling surfaces in the closed position of the arrangement, that the controller is configured to receive input from the pressure sensor, and that the controller is configured to derive from the input from the pressure sensor at least one value that is representative of at least one pressure parameter in a styling action, and to involve the value in generating the output that is indicative of the moisture content of the hair.
  • the accuracy of the moisture content estimation can be further increased by relying on the clamping pressure as a further factor besides the temperature of the hair styling component and the temperature of the hair, and possibly also the duration/speed of the styling action.
  • the hair styling device it is possible to have a position detector configured to detect the position of the hair styling component.
  • the controller is configured to receive input from the position detector, and to derive from the input from the position detector a value that is representative of the time duration of a styling action, and to involve the value in generating the output that is indicative of the moisture content of the hair.
  • the hair temperature sensor is electrically coupled to the position detector so as to be activated only when the functional arrangement is in the closed position and to be shut off apart from that.
  • the position detector is a detector comprising a switching mechanism configured to be in one of at least two different conditions and to be caused to switch from one condition to another as the position of the arrangement changes.
  • Fig. 1 shows a practical embodiment of a hair styling device 1 according to the invention.
  • the hair styling device 1 comprises an arrangement 10 of a first hair styling component 11 having a first hair styling surface 12 and a second hair styling component 13 having a second hair styling surface 14.
  • the first hair styling component 11 and the second hair styling component 13 are hingably connected to each other to thereby be capable of realizing an opened position of the arrangement 10 for receiving hair between the first hair styling surface 12 and the second hair styling surface 14, and a closed position for styling hair between the first hair styling surface 12 and the second hair styling surface 14.
  • Fig. 1 shows the hair styling device 1 with the arrangement 10 in the opened position.
  • the hair styling device 1 as shown is particularly suitable to be used as a manual hair straightener, which does not alter the fact that the invention is applicable to other types of hair styling device as well.
  • the hair styling device 1 further comprises a heating mechanism 20 configured to heat both the first hair styling component 11 and the second hair styling component 13.
  • the heating mechanism 20 is only diagrammatically indicated in Fig. 1 , as two dashed boxes which are each associated with one of the hair styling components 11, 13. The present description is also applicable in the alternative case of the heating mechanism 20 being configured to heat only one of the hair styling components 11, 13.
  • proper use of the hair styling device 1 as shown involves user's actions of i) picking up a strand of hair at a position near the scalp, which is done with the arrangement 10 in the opened position, ii) putting the arrangement 10 to the closed position with the hair being at a position of being clamped between the hair styling surfaces 12, 14, and iii) pulling the hair styling device 1 down on the strand of hair.
  • the hair styling surfaces 12, 14 are made to glide over the strand of hair while being in a heated state, wherein the strand of hair is sandwiched between the hair styling surfaces 12, 14, as a result of which the hair straightening effect is realized as desired.
  • the hair styling device 1 is equipped with two temperature sensors 21, 22 which are integrated in one of the hair styling components 11, 13.
  • One of those temperature sensors 21, 22 is arranged and configured to detect a temperature of the respective hair styling component 11, 13, and is referred to as component temperature sensor 21.
  • the other of those temperature sensors 21, 22 is arranged and configured to detect a temperature of hair, in a contactless fashion, and is referred to as hair temperature sensor 22.
  • the detection range of the hair temperature sensor 22 is depicted as a cone-shaped area in Fig. 1 .
  • the hair styling device 1 is further equipped with a controller 23 that is configured to control operation of the heating mechanism 20 on the basis of input representing a desired temperature setting of the hair styling components 11, 13 and input from the component temperature sensor 21 representing an actual temperature of the hair styling components 11, 13.
  • the controller 23 is only diagrammatically indicated in Fig. 1 , as a dashed box.
  • the controller 23 is also configured to make an analysis of the moisture content of hair that is subjected to a styling action by means of the hair styling device 1, as will be explained in more detail in the following. It is practical if the controller 23 comprises a microprocessor, for example.
  • the hair styling device 1 does not only have a temperature detection functionality, but also a position detection functionality, that is to say, the hair styling device 1 is equipped with a position detector 24 configured to detect the position of the arrangement 10.
  • the controller 23 is configured to receive and process input from both the temperature sensors 21, 22 and input from the position detector 24. When the arrangement 10 is in the opened position, and the position detector 24 is not triggered, the controller 23 will not use input from the temperature sensors 21, 22 for hair moisture analysis. Once the position detector 24 is triggered, the temperature data received from the temperature sensors 21, 22 will be recorded until the position detector 24 is untriggered. The recorded temperature data together with the recorded duration of the styling action/stroke of the hair styling device 1 on a strand of hair can be used for hair moisture analysis, as is now explained with reference to the graphs of Figs. 2 , 3 and 4 .
  • Fig. 2 is a combined graph representing detected values of a hair styling component temperature and a hair temperature, respectively, against time.
  • the values are obtained during a typical straightening stroke on healthy Chinese hair with a normal moisture content, i.e. a moisture content of about 11%, with a temperature setting of 200 °C.
  • the temperature is expressed in degrees Celsius and the time is expressed in seconds.
  • the detected values of the hair styling component temperature are the higher values in the combined graph, and the detected values of the hair temperature are the lower values in the combined graph.
  • the following values as can be used in the hair moisture analysis are indicated: stroke duration t, difference ⁇ T p between the peak values of the hair styling component temperature and the hair temperature, hair styling component temperature drop ⁇ T c over the stroke duration, and hair temperature drop AT h over the stroke duration.
  • FIG. 3 is a combined graph representing detected values of a hair styling component temperature and a hair temperature, respectively, against time, for a straightening stroke performed at normal speed and a temperature setting of 200 °C on hair having a normal moisture content.
  • Fig. 4 is a combined graph representing detected values of a hair styling component temperature and a hair temperature, respectively, against time, for a straightening stroke performed at normal speed and a temperature setting of 200 °C on hair of which the moisture level has been increased by 5%.
  • the temperature is expressed in degrees Celsius and the time is expressed in seconds.
  • the detected values of the hair styling component temperature are the higher values in the combined graphs, and the detected values of the hair temperature are the lower values in the combined graphs.
  • the following table is applicable to a comparison of the combined graph of Fig. 3 and the combined graph of Fig. 4 , wherein the data relating to the situation to which the combined graph of Fig. 3 is applicable are regarded as baseline data.
  • the hair styling component temperature is indicated as T c
  • T h the hair temperature
  • Baseline data Newly collected data Data
  • a characterization of parameters such as listed in the table could first be done in a laboratory with hair having a normal moisture content, hair having a low moisture content, and hair having a high moisture content. Ideally, factors related to user behavior such as difference stroke speeds and clamping pressure should also be considered.
  • a data direction matrix can be obtained and preprogrammed in the controller 23 as a look-up table that is to be used in the process of generating output that is indicative of the moisture content of the hair.
  • This indication can be used for adjusting operation of the heating mechanism 20, for example, despite any temperature setting as may have been initially chosen by the user, and/or can be used for informing the user.
  • the hair styling device 1 may be equipped with a display or another type of indicator, and/or may be configured to communicate the moisture content-related information to an external device such as a smartphone on which a suitable app is installed.
  • the user can be informed by a simple message mentioning the percentage of the moisture content of the hair and/or by a more sophisticated message mentioning details of the best way to treat the hair, the products that may be used in doing so, etc.
  • a reference to “the temperature of the hair styling component” or “the hair styling component temperature” in the present text is to be understood in relation to the temperature detection on or in the hair styling component by means of the component temperature sensor.
  • a reference to “the temperature of (the) hair” or “the hair temperature” in the present text is to be understood in relation to the hair temperature detection by means of the hair temperature sensor.
  • a hair styling device 1 comprises a hair styling component 11, 13, a heating mechanism 20 configured to heat the hair styling component 11, 13, a component temperature sensor 21 configured to detect a temperature of the hair styling component 11, 13, a hair temperature sensor 22 configured to detect a temperature of hair faced by the hair styling component 11, 13 during operation of the hair styling device 1, and a controller 23 configured to receive inputs from at least both temperature sensors 21, 22, and to process the inputs to control operation of the heating mechanism (20).

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  • Cleaning And Drying Hair (AREA)
  • Cosmetics (AREA)
EP21157312.6A 2021-02-16 2021-02-16 Hair styling device Withdrawn EP4042900A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP21157312.6A EP4042900A1 (en) 2021-02-16 2021-02-16 Hair styling device
CN202210136662.6A CN114938881A (zh) 2021-02-16 2022-02-15 毛发造型设备
US18/275,449 US20240099439A1 (en) 2021-02-16 2022-02-15 Hair styling device
KR1020237031446A KR20230145179A (ko) 2021-02-16 2022-02-15 헤어 스타일링 장치
PCT/EP2022/053564 WO2022175213A1 (en) 2021-02-16 2022-02-15 Hair styling device
EP22705060.6A EP4294232A1 (en) 2021-02-16 2022-02-15 Hair styling device
JP2023548649A JP2024506654A (ja) 2021-02-16 2022-02-15 ヘアスタイリングデバイス
CN202220332513.2U CN218790999U (zh) 2021-02-16 2022-02-15 毛发造型设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21157312.6A EP4042900A1 (en) 2021-02-16 2021-02-16 Hair styling device

Publications (1)

Publication Number Publication Date
EP4042900A1 true EP4042900A1 (en) 2022-08-17

Family

ID=74661282

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21157312.6A Withdrawn EP4042900A1 (en) 2021-02-16 2021-02-16 Hair styling device
EP22705060.6A Pending EP4294232A1 (en) 2021-02-16 2022-02-15 Hair styling device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22705060.6A Pending EP4294232A1 (en) 2021-02-16 2022-02-15 Hair styling device

Country Status (6)

Country Link
US (1) US20240099439A1 (ja)
EP (2) EP4042900A1 (ja)
JP (1) JP2024506654A (ja)
KR (1) KR20230145179A (ja)
CN (2) CN218790999U (ja)
WO (1) WO2022175213A1 (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101385220B1 (ko) * 2012-12-27 2014-04-15 한국생산기술연구원 헤어 아이론의 온도 조절 시스템 및 온도 조절 방법
US20180075776A1 (en) * 2016-09-13 2018-03-15 L'oreal Systems, devices, and methods including connected styling tools
CN108065562A (zh) * 2016-11-07 2018-05-25 建福实业有限公司 一种头发造型器及其温度控制系统及其方法
WO2020120348A1 (en) * 2018-12-10 2020-06-18 Koninklijke Philips N.V. Hair stylying device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014516742A (ja) * 2011-06-13 2014-07-17 クールウェイ・インコーポレイテッド 動的及び最適ヘアスタイリング温度制御のための方法及びヘアケアツール
RU2674457C1 (ru) * 2015-11-25 2018-12-10 Конинклейке Филипс Н.В. Приспособление для укладки волос
GB2569655B (en) * 2017-12-22 2022-05-11 Jemella Ltd Training system and device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101385220B1 (ko) * 2012-12-27 2014-04-15 한국생산기술연구원 헤어 아이론의 온도 조절 시스템 및 온도 조절 방법
US20180075776A1 (en) * 2016-09-13 2018-03-15 L'oreal Systems, devices, and methods including connected styling tools
CN108065562A (zh) * 2016-11-07 2018-05-25 建福实业有限公司 一种头发造型器及其温度控制系统及其方法
WO2020120348A1 (en) * 2018-12-10 2020-06-18 Koninklijke Philips N.V. Hair stylying device

Also Published As

Publication number Publication date
JP2024506654A (ja) 2024-02-14
CN218790999U (zh) 2023-04-07
US20240099439A1 (en) 2024-03-28
EP4294232A1 (en) 2023-12-27
KR20230145179A (ko) 2023-10-17
WO2022175213A1 (en) 2022-08-25
CN114938881A (zh) 2022-08-26

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