EP3524087A1 - Dispositif de coiffure - Google Patents

Dispositif de coiffure Download PDF

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Publication number
EP3524087A1
EP3524087A1 EP18155698.6A EP18155698A EP3524087A1 EP 3524087 A1 EP3524087 A1 EP 3524087A1 EP 18155698 A EP18155698 A EP 18155698A EP 3524087 A1 EP3524087 A1 EP 3524087A1
Authority
EP
European Patent Office
Prior art keywords
hair
styling device
treatment compartments
hair styling
light
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Withdrawn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
EP18155698.6A
Other languages
German (de)
English (en)
Inventor
Wouter Hendrik Cornelis SPOORENDONK
Ype Bernardus Brada
Nikolaj Vasiljevitsj ZJIROECHA
Rieko Verhagen
James Howard Coombs
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 EP18155698.6A priority Critical patent/EP3524087A1/fr
Publication of EP3524087A1 publication Critical patent/EP3524087A1/fr
Withdrawn legal-status Critical Current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
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A45D2/002—Hair straightening appliances with combs
    • 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
    • A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
    • A45D19/0041—Processes for treating the hair of the scalp
    • A45D19/0066—Coloring or bleaching
    • 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
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/20—Additional enhancing means
    • A45D2200/205—Radiation, e.g. UV, infrared

Definitions

  • the invention relates to a hair styling device for photo-thermal hair reshaping.
  • WO2017153121 (Attorney's ref. 2016PF00294), incorporated herein by reference, discloses a hair styling device which comprises a pulse-driven light emitting diode (LED) or an array of LEDs configured to deliver optical energy to hair, wherein an output wavelength is in the range 400 - 900 nm, with good results in the range 400 - 650 nm, and preferably in the range 450 - 550 nm, a pulse width is in the range 50 - 300 ms, preferably between 50 and 200 ms, such as in the range 100 - 200 ms, or between 50 and 100 ms, a LED pulse driver circuit to drive the LED/s, a control system to control the LED pulse driver, particularly controlling pulse electrical parameters including voltage, pulse duration, and pulse duty cycle, a hair contacting interface configured to contact the hair and hold the hair in a preconfigured shape, e.g. planar, cylindrical, during pulsed light exposure provided by the LED, and an optical shield configured to block stra
  • Embodiments of the invention are based on the recognition that hairs stacked more than about 200 ⁇ m away on top of each other do not receive enough light for photo-thermal reshaping. This results in that in a curler (or straightener) application, only those hairs that were within this about 200 ⁇ m layer, will be curled (or straightened), while the other hairs will retain their original shape.
  • a realistic amount of hairs to be treated at once is a bundle of hair between 3 and 6 mm in diameter, which is about 15 - 30 times the maximum stacked cross-section hair should have in order to be reshaped.
  • one aspect of the invention proposes to divide the hair over multiple treatment compartments, to enable hair to be sufficiently radiated in each treatment compartment by optical radiation, preferably from an LED light source.
  • the hair is radiated from at least three different sides.
  • the hair styling device may comprise at least five treatment compartments, preferably at least ten treatment compartments, and more preferably at least twenty-five treatment compartments, thereby forming an optical comb.
  • the treatment compartments are dimensioned to only allow hair that is not more than ten layers thick, and preferably not more than five layers thick.
  • the treatment compartments are made from a material that can convey light.
  • the material is shaped in such a way that light is directed towards the hair.
  • FIGs. 1-4 show embodiments of the invention.
  • the compartments have fixated dimensions and guide the light from the light source(s) homogeneously toward the hair.
  • An exemplary embodiment is shown below. In this case there is single side illumination and two treatment compartments. The light is guide towards the treatment compartments where the hair is illuminated from at least 2 sides, and preferably from at least 3 sides.
  • the dimensions of the treatment compartments will never allow more hairs than can be illuminated at once.
  • each treatment compartment will only allow hair that is not more than 10 layers thick, but to cope with natural dark hair, more preferably, each treatment compartment will only allow hair that is not more than 5 layers thick.
  • the shape of the treatment compartments' material is preferably developed in such way that light intensity is distributed (on all surfaces of the hair, preferably in a homogeneous way.
  • materials which can guide light, e.g. transparent glass or plastic.
  • the material of the treatment compartments will guide the light of the light source(s) (e.g. LEDs) towards the hair.
  • the light may be coupled into the treatment compartments material from any direction. Due to internal reflections of light in the light guide, the material will be heated ( ⁇ 100°C). In turn the hairs will catch this heat by conduction, lowering the optical specifications.
  • the hair styling device may have at least 5 treatment compartments, preferably at least 10 treatment compartments, more preferably at least 25 treatment compartments. Such embodiments could be called an optical comb.
  • the hair styling device would just be a kind of optical comb in which heating and reshaping is done in the treatment compartments.
  • the treatment compartments could be curved, or the hair can be curled directly afterwards in a subsequent element. For example, after the hair has left the comb, it could be wound around a cylinder so as to set the curled shape while the hair is still above its glass transition temperature.
  • pulsed LEDs are used to style hair.
  • the output wavelength is preferably in the range between 400 and 900 nm, and more preferably in the range between 450 and 550 nm.
  • the pulse width is preferably shorter than or equal to 200 ms, and more 10 preferably shorter than or equal to 100 ms.
  • the output energy fluence on the hair surface is preferably in the range between 1 J/cm 2 and 10 J/cm 2 , more preferably between 3 J/cm 2 and 7 J/cm 2 , and most preferably between 4 and 6 J/cm 2 .
  • optical energy but also heat from the LEDs is used to heat a contact surface that contacts the hair, so that less optical energy from the LEDs in a suitable wavelength band is needed to heat the hair to a temperature above its glass transition temperature needed for hair styling, as described in more detail in the earlier application EP17190265.3 (Attorneys' reference 2017PF02405), incorporated herein by reference.
  • the optical radiation source e.g. one or more LEDs
  • the optical radiation source may be arranged for radiating hairs using at least two radiation flashes, an interval between subsequent flashes being smaller than 5 s, preferably smaller than 1 s, and more preferably smaller than 0.3 s.
  • the hair styling device comprises a sensor unit for measuring effects from radiating hair, and a feedforward control device for controlling the optical radiation source in dependence on a signal from the sensor unit.
  • the optical radiation source e.g. one or more LEDs
  • the sensor unit may include a sensor arranged before the optical radiation source in a hair flow direction.
  • the hair styling device may comprise, along a direction in which the hair is guided, a first sensor, a first LED unit being controlled in dependence on a signal from the first sensor, a second sensor, and a second LED unit being controlled in dependence on a signal from the second sensor.
  • the direction in which hair is guided through the hair styling device may determine which part of the optical radiation source will act as the first LED unit.
  • the hair styling device may comprise a drive mechanism to move the hair along the optical radiation source at a speed controlled by the feedforward control device in dependence on the signal from the sensor unit.
  • the hair styling device comprises a two-dimensional array of elements to bring hair at a styling temperature, the elements produce optical radiation energy.
  • the elements may include one or more LEDs, and preferably a plurality of LEDs, in which case the LEDs are driven in clusters that may be of mutually different shapes and sizes.
  • the hair styling device may comprise sensors to obtain an areal light absorption measurement opposed to the two-dimensional array of elements, and a control unit for individually controlling the elements in dependence of the measurement.
  • the sensors may include LEDs that momentarily do not produce light.
  • Fig. 1 shows a first embodiment of a hair styling device S according to the invention.
  • Hair H is treated in 2 treatment compartments C1, C2, formed from a compartment material M.
  • LEDs L act as light source, and in this embodiment, the LEDs are embedded in the compartment material M.
  • the compartment material ensures that the light from the LEDs is used for treating the hair from multiple sides; in this embodiment, hair would receive light from the left side, from the bottom, and from the right side.
  • Fig. 2 shows a second embodiment of a hair styling device S according to the invention.
  • the embodiment from Fig. 2 differs from that of Fig. 1 in that the LEDs L are not embedded in the compartment material M, and that LEDs L are also present to the left and to the right of the hair styling device.
  • Fig. 3 shows a third embodiment of a hair styling device S according to the invention.
  • LEDs L are also placed between adjacent treatment compartments.
  • Fig. 4 shows a fourth embodiment of a hair styling device S according to the invention.
  • the embodiment from Fig. 4 differs from that of Fig. 3 in that the hair styling device S now also has a cover C having LEDs L so as to also provide light from a fourth side to the hair H.
  • the light source is turned on and off (flash) to form a pulsed wave (PW) to vary the light output so that hair can receive required optical energy to increase temperature required for styling.
  • the light source is turned on (not off) to form a continuous wave (CW), in combination with a suitable light source control to ensure that hairs are not overexposed to light energy by regulating the current flowing through the LEDs during operation to limit the light output.
  • PW pulsed wave
  • CW continuous wave
  • the word “comprising” does not exclude the presence of elements or steps other than those listed in a claim.
  • the word "a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • the invention may be implemented by means of hardware comprising several distinct elements, and/or by means of a suitably programmed processor. In the device claim enumerating several means, several of these means may be embodied by one and the same item of hardware.
  • the mere fact that certain measures are recited in mutually different dependent claims that do not refer to one another does not indicate that a combination of these measures cannot be used to advantage.
EP18155698.6A 2018-02-08 2018-02-08 Dispositif de coiffure Withdrawn EP3524087A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18155698.6A EP3524087A1 (fr) 2018-02-08 2018-02-08 Dispositif de coiffure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18155698.6A EP3524087A1 (fr) 2018-02-08 2018-02-08 Dispositif de coiffure

Publications (1)

Publication Number Publication Date
EP3524087A1 true EP3524087A1 (fr) 2019-08-14

Family

ID=61188651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18155698.6A Withdrawn EP3524087A1 (fr) 2018-02-08 2018-02-08 Dispositif de coiffure

Country Status (1)

Country Link
EP (1) EP3524087A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004159727A (ja) * 2002-11-11 2004-06-10 Seiji Kuwabara 整髪具
WO2013190484A1 (fr) * 2012-06-20 2013-12-27 Koninklijke Philips N.V. Peigne
CN104970534A (zh) * 2015-07-06 2015-10-14 固态照明张家口有限公司 一种梳子
WO2017153121A1 (fr) 2016-03-09 2017-09-14 Koninklijke Philips N.V. Coiffure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004159727A (ja) * 2002-11-11 2004-06-10 Seiji Kuwabara 整髪具
WO2013190484A1 (fr) * 2012-06-20 2013-12-27 Koninklijke Philips N.V. Peigne
CN104970534A (zh) * 2015-07-06 2015-10-14 固态照明张家口有限公司 一种梳子
WO2017153121A1 (fr) 2016-03-09 2017-09-14 Koninklijke Philips N.V. Coiffure

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