EP2861096B1 - Device for hair fashioning with radiation source - Google Patents

Description

The invention relates to a hair styling device with a number of first and second radiation sources. This can be used for temporary and permanent hair shaping, in particular for hair straightening or curling.

Conventional hair styling devices are, for example, plate-style hair straighteners or round curling irons, in which the hairs are each transformed by the application of heat. When hair is transformed by means of heat, hydrogen bonds are usually dissolved in the hair structure and re-formed after the heat has been released. In this type of hair shaping is called a temporary hair shaping, as this is usually reversible after a short time or little external environmental influences such as heat or moisture.

Alternative conventional hair dressings are also made chemically, e.g. in a conventional permanent wave treatment performed. In chemical hair reshaping, disulfide bonds of keratin are broken and then re-formed with new binding partners, e.g. mechanically held new shape. The chemical process is multi-stage and the shaping of the hair is called durable, because the new hair shape less responsive to environmental influences than a purely hydrogen-bonded temporary hair transfusion.

Another way to break down molecular bonds within the hair is the use of electromagnetic radiation. Such a method is described, for example, in the patent US 5395490 and in the patent WO 2012/012050 described. Here the hair is irradiated directly with long-wave infrared radiation (IR).

In the patent application WO 2010 096598 A2 Are applied to the hair particles, such as tourmaline particles, excited by means of electromagnetic radiation, which in turn emit radiation to the hair.

The object of the invention is to provide a hair styling device with which the hair can optionally be temporarily or permanently reshaped.

This object is achieved by a hair styling device according to the preamble with the features specified in claim 1.

The hair styling device according to the invention for the application for temporary or permanent hair shaping comprises a number of first radiation sources for a temporary hair shaping, i. Radiation sources having a radiation power for breaking up substantially hydrogen bonds in the hair structure. In addition, the hair styling device according to the invention comprises a number of second radiation sources for permanent hair shaping. In this case, essentially disulfide bonds of keratin are split according to the invention. For the purposes of the invention, a radiation source is understood to mean an electromagnetic radiation source which emits radiation, preferably in specific wavelength ranges, to hair strands in a treatment section of the device. The radiation is thereby adapted to the molecular bonds or bonds existing between two molecules, so that a splitting and subsequent rearrangement (i.e., formation with respectively new binding partners) of hydrogen bonds and / or disulfide bonds of the keratin is made possible. The radiation source may e.g. be an electrical resistance that heats up at current flow, or other radiation-emitting sources (e.g., LED, OLED) that provide photons of the desired energy and, if possible, in sufficient quantity for the particular temporary or permanent hair-shaping process. Therefore, by the special adaptation of the device to the respective desired Haarumformungsprozess, the time required for hair shaping, especially for the permanent hair shaping, compared to the conventional devices can be reduced.

In addition, the hair styling device according to the invention comprises a control device for controlling the radiation output of the first radiation source for the temporary hair shaping and the second radiation source for the permanent hair shaping on a hair treatment section in the hair styling device. For the purposes of the invention may be such Control device may be a switch or regulator, with which the radiation output is adjustable so that it can be switched between a temporary and a permanent Haarumformung the hair in a treatment section. For example, a switch may be used to turn on or off one or more radiation sources of the first and / or second radiation sources. For example, a regulator may regulate the power of a radiation source to vary the power, or the type of radiation (ie, wavelength, frequency, emission spectrum, etc.) of the controlled radiation sources. The process of hair-shaping can thus be controlled in a very targeted manner, since the power of the radiation sources can be varied quickly as required (eg rapid switching on / off of the radiation sources or rapid change of the radiation power). This option allows you to correct short-term changes in the taste of the user with a single device.

Furthermore, the hair styling device according to the invention comprises only one type of first or second radiation sources which can be switched over by the control device over a specific treatment period in such a way that they serve as the respective other radiation source. That is, the control device can switch the radiation output of one or more of the first radiation sources over a specific treatment period such that they serve as second radiation sources for permanent hair shaping or vice versa. With the aid of such a control device, the radiation sources can thus be controlled in such a way that they can be switched over from a radiation source with a type of radiation for the temporary hair transformation into a radiation source for a type of radiation for permanent hair reshaping. By such an adaptation of the radiation sources, it is possible that both radiation sources, i. the first and second radiation sources are replaced by a radiation source of variable radiation type. This simplifies the overall structure of the hair styling device.

The switching can be controlled by a change in the emitted wavelength or the emission spectrum of the radiation source, for example an LED, OLED, laser. Alternatively, one can also switch the radiation output by a change in intensity (energy, power, quantum efficiency, etc.). Optionally, these can Switches are also combined with an upstream circuit of one or more filter elements (frequency doubler, notch filters, etc.) which allow additional variation of the transmitted wavelength spectrum. By using one or two such filter elements, the corresponding wavelength band for a temporary or permanent hair transformation can then be changed without changing the radiation source. In this case, the control device controls the corresponding selection of the filter elements.

According to a further embodiment of the hair shaping device according to the invention, the control device can adapt the power of one or more first and / or second radiation sources to the desired hair shaping. The power variation of the radiation can be done in different ways. For example, instead of one, several equivalent or differently powered radiation sources may be used. Depending on the performance required for operation, different numbers of these radiation sources can be activated. In a further alternative embodiment of this embodiment, the radiation power is varied by clocking one or more radiation sources the same or different. Depending on the type of radiation source, the applied voltage can be varied to adjust the emission power of the radiation source accordingly.

The precise values with which a hair styling device according to the invention is operated are inter alia geometry-dependent and can be determined by the person skilled in the art on the basis of the information described herein, possibly with the aid of experimental results. For example, determine the length and width of the treatment section in which an interaction of the radiation with the hair structure, the appropriate power output to this treatment section. The person skilled in the art can likewise determine the optimum ranges of the wavelengths used and the services provided for hair shaping for the amount of hair treatable in the treatment section. These predetermined values can either be predetermined or variably adjustable for the user in a certain application area on the hair styling device during use.

Since the hair structure, e.g. Hair color and hair thickness, varies widely, it is preferred that the radiation power and possibly also the wavelength ranges can be tailored to the hair type and the desired forming result in the application. Thus, e.g. strong curly hair can be transformed into straight hair or slightly curly hair. In determining the type of hair, it is also possible to distinguish what condition the hair is in (for example, healthy or very stressed). This allows conclusions to be drawn on the number of existing bonds in the hair and thus the necessary power for the desired degree of deformation can be provided.

Depending on the photon energy differentially stable chemical bonds in the hair structure can be broken up. For permanent hair reshaping the disulfide bonds (S-S bonds) of keratin must be broken up. Covalent disulfide bonds have a binding energy of about 268 kJ / mol. According to the invention, this bond is preferably cleaved with a single photon. For a wavelength of about 440 nm is appropriate. It is inventively used in the selection of the applicable wavelength range advantageously that the disulfide bonds are the weakest covalent bonds within the keratin.

The radiation necessary to break down the second weakest binding of keratin, namely the SC bond, is about 413 nm. Therefore, it can be achieved that the keratin, with the exception of the disulfide bonds, remains substantially intact when the minimum wavelength of the radiation is about 413 nm is limited.

From the foregoing considerations and calculations, it will be seen that another embodiment of the hair styling device of the present invention comprises a radiation source for permanent hair styling with a radiation emitter for radiation having a wavelength in the range of about 415 to 440 nm. This is called visible radiation (VIS), which lies in an optical spectral range of about 380 to 780 nm wavelength. The advantage of this wavelength range is that selectively the weakest bonds of the hair structure, namely the disulfide bonds, can be split and re-formed after a restructuring of the hair. This leaves the hair structure in tact, but the hairstyle, ie the Hair itself, get a permanently changed outer shape or shape. The limitation of the wavelength range can be carried out, for example, with the aid of radiation sources with a single wavelength or with a narrow emission spectrum or additionally with optical filters (eg so-called blocking filters). This reduces or eliminates keratin damage as compared with conventional hair remover hair styling devices. The selection of the appropriate radiation source and the appropriate emission spectrum leads to improved protection with constant or improved efficiency.

According to reliable studies, there are on average about 10 ²⁰ disulfide bonds / gram in the hair, although exact values are difficult to specify here, since hair is a rather heterogeneous natural product. When starting from an average strand of hair in hair straightening with a two-platen hair straightener (as with conventional hair straighteners), about 0.3 g of hair would interact with the radiation occurring in the treatment section between the two opposing hairs every second Smoothing plates is discharged. In order to break up all disulfide bonds, a theoretical power (at 100% efficiency) of the radiation source of about 15 W would be required.

As a preferred embodiment of a second radiation source for permanent hair shaping, according to the invention, a small radiation source, for example a heat source with a temperature of approximately 5800 K, can be used in comparison with the conventional hair styling devices. This improves the efficiency of the hair styling device according to the invention with constant or even improved protection of the hair structure. Since the actually required power of such a second radiation source for permanent hair reshaping is relatively small, the radiation source can be made correspondingly compact. Exemplary radiation sources are heat sources based on the principle of the incandescent filament, LEDs, OLEDs, lasers, as long as they emit radiation of the required range with sufficient power for the desired hair transformation. For the breaking up of all disulfide bonds, the second radiation source preferably has a power in the range of at least 15 watts. In order to achieve as gentle as possible hair shaping, the power is preferably at a maximum of about 200 watts, more preferably about 100 watts and in particular at about 15 to 50 watts. However, since not all disulfide bonds have to be broken up for a hair shaping, the radiation sources are more preferably further regulatable in their performance, so that they can also be operated in power ranges below 15 watts, for example in a range of about 1 watt to 15 watts ,

If the transformation of the hair is only temporary, it is sufficient to break the hydrogen bonds of the keratin. Hydrogen bonds in proteins have binding energies of about 12 to 38 kJ / mol. In order to break up these bonds by means of individual photons, radiation having wavelengths greater than 440 nm to 10 μm is used according to the invention. Therefore, a further embodiment of the hair styling device according to the invention comprises a radiation source for temporary hair shaping with a radiation emitter for radiation having a wavelength in the range of greater than 440 nm to about 10 microns, which also larger wavelength components may be present. More preferably, the radiation is about 3 to 10 microns. The radiation in this wavelength range is generated for example by a black body radiator with a temperature of about 500 K. Damage to the hair structure or disruption of the disulfide bonds in the hair structure is thereby virtually excluded. Therefore, the relatively easy-to-split hydrogen bonds are selectively cleaved and after restructuring the hair structure, i. H. after recombining hydrogen bonds, the hairstyle appears in a new shape or form (smoothed or curled).

The preferably used radiation is classified in the so-called "IR-C" wavelength range of infrared radiation. However, the division into the different regions of infrared radiation is not clearly defined in the literature and is sometimes used inconsistently. Therefore, here the IR range is subdivided into "medium infrared radiation" (about 3-50 μm) and "far infrared radiation" (about 50-1000 μm) so that, according to the invention, medium infrared radiation is preferably used for the temporary hair shaping.

In a 1 cm long hair are on average about 2.5 x 10 ¹⁶ hydrogen bonds. For a temporary hair shaping of it approx. 10 ^{13 are} opened (see also J. Soc. Cosmetic Chemists 20, p. 321-331, 1969 ). Extrapolated to 0.3 g of hair per second in the treatment section (interaction zone), a power of about 10 mW for the breaking of hydrogen bonds is required (at a theoretical efficiency of 100%). Therefore, the power of the first radiation sources for temporary hair-shaping is preferably set in a range of at least 10 mW. However, also performances of less than 10 mW, for example performances in a range of about 1-10 mW, preferably 5-10 mW, are applicable, especially if a gentler hair transformation is desired or a hair shaping with the breaking of less hydrogen bonds already for the desired effect sufficient. The upper functional performance limits are approximately 1 watt, preferably about 500 mW and more preferably about 100 mW, in order to obtain as gentle a hair as possible. Accordingly, lower power levels are generally sufficient than with conventional devices.

With a hair styling device according to the invention, it is possible for the user to decide individually with each treatment whether he wishes a temporary or permanent hair shaping. For this purpose, the hair styling device is equipped with a control device (selector switch or similar device). If the user selects the temporary hair transformation, only the first radiation source is activated, which emits, for example, radiation in a wavelength range of approximately 3 to 10 μm. If, on the other hand, a permanent shaping of the hair is desired, either the second radiation source, which emits, for example, radiation in a wavelength range from about 415 to 440 nm, can be used alone or in conjunction with the first radiation source. The user needs instead of two different devices only a single, universally applicable device. By selectively switchable or switchable radiation sources, the device is also operable with a low energy consumption. As a result of the technique used according to the invention, the hair styling device can optionally be operated independently of the mains (eg in battery operation). Wireless devices are thus easy to implement. In addition, the selective bond breaking allows a gentler hair transformation compared to the conventional heat-based or chemical forming methods

In addition to breaking the bonds in the hair, i. Of course, because of the change in the chemical structure of the hair, the shaping of the hair (i.e., the shape of the hair) for the applicability of the hair styling device of the invention naturally plays an essential role in smoothing. Here, a distinction is basically made between a hair straightening and a curl or wave formation of the hair strands. In both applications, the hair styling device includes a device to transfer the necessary tensile force to the hair during forming. When smoothing usually a long pulling the hair strands. In curling or wave shaping, the hair strands are generally pulled over a design element that produces the desired shape or held in tension by the latter in the desired shape, so that the predetermined hair shape is transferred to the hair structure. Basically, a breakup of the previous, the hair structure forming bonds before the broken bonds are reconnected again with the aid of the tension, namely to form the new hair shape.

According to the invention, the hair styling device for this purpose comprises, in a preferred embodiment, a traction transfer device arranged in or substantially adjacent to the treatment section with a contact surface for transmitting tensile forces to the hair to be reshaped in the treatment section during the intended use. Exemplary tensile forces between Haaröberfläche and a traction transfer device are between about 2 to 5 N, preferably between about 2 to 3 N.

This tensile force transmission can, for example, via clamping lips (eg made of silicone, a high temperature resistant plastic, a spring-mounted metal rail), which are preferably attached to one side of the device and between which the hair strand is trapped while pulling through. So that the hair section to be treated can be kept in tension during the treatment, these are preferably arranged in the pulling direction (usually away from the head) of the device on the side of the treatment section facing away from the head. For example, in a forceps construction of the hair styling device having a treatment portion formed of two forceps ends, they may be disposed on the side of the forceps ends which is held away from the head.

Alternatively, in a forceps-type basic construction of the device, the forceps ends themselves, e.g. be designed as a traction transfer device analogous to conventional hair straightener with Glättplatten. In addition, the contact surface may be formed of a material that increases the tensile force (plastic, rubberized surface, etc.) or in the form of a tension-increasing, structured surface (for example, grooves).

In an alternative embodiment, the traction transmission device can be configured separately from the hair shaping device with the treatment section. An example of this is a pull-in or styling element (e.g., a cylindrical curler) that is insertable into the hair and used in combination with the hair styling device of the present invention for temporary and / or permanent hair re-shaping by electromagnetic radiation. For this purpose, the radiation could be applied to the hair provided with the tension elements or shaping elements, for example via a type of radiation gun or a type of radiation hood.

Optionally, the traction transfer devices, e.g. the leveling plates or clamping lips, be heated to a temperature above room temperature, to additionally support the Haarumformprozess. The temperature is preferably more than 50 ° C, more preferably more than 80 ° C, in particular about 90 to 180 ° C. The temperature should preferably be no higher than 200 ° C to avoid damage to the hair structure.

When screed plates are used as the tensile force transmission devices provided in the treatment section of the hair styling device, they are preferably formed of a radiation-transmissive material (e.g., translucent plastic, etc.) or provided with through-holes for the radiation. Optionally, the screed plates may simultaneously serve as optical filters (e.g., blocking filters for radiation of a particular wavelength), which may also be designed to be interchangeable depending on the desired application.

The hair shaping device according to the invention with a tensile force transmission device can preferably be equipped with a passage speed measuring device. Such devices are known in the art. The Pulling speed determines the interaction time of the hair with the radiation source. If, therefore, the speed of the passage is known, the power required for the particular hair transformation (temporary or permanent) can be determined or calculated by a corresponding power determination device and used accordingly during operation. In the event that the hair is moved too quickly through the treatment section of the device and despite full load not enough radiation is brought into the hair, for example, a warning signal (eg, acoustically, optically or haptically) from a signaling device (eg, speech, lamp, Diode, vibrating element, etc.). Thus, it is signaled to the user that if the application is too rapid, the forming result may no longer be satisfactory.

In a further preferred embodiment of the hair styling device according to the invention, the treatment section is delimited by two radiation areas situated opposite one another for emitting radiation of the first and second radiation sources. An example of this are pincers. Such tong-like housing forms are known to those skilled in the field of conventional hair straighteners. The advantage of such an embodiment lies in the fact that the two radiation areas located opposite one another act on the hair from two sides of the hair strand guided therebetween. This increases the efficiency of the interaction of the radiation with the hair, so that the power of the individual radiation sources can be set lower. This makes it possible, with a smaller footprint, to reduce the power so far that, for example, a battery-independent battery operation is possible.

An exemplary variant for this embodiment is the combination of a conventional hair straightener with a conventional hot plate as the first radiation source for the temporary forming (preferably in the power range described above) in combination with a switchable or usable second radiation source (preferably 415-440 nm) for the permanent deformation of the hair. In this case, one or both plates can be heated or provided with the second radiation sources.

Another embodiment of the above-described hair styling device with two opposing radiation areas each comprises a radiation area with a convex and a concave surface. Here, the portion of the device with the radiation area with the convex surface, for example, with respect to the handle may be formed fixed. For example, the portion having the radiation area with the concave surface may be made movable with respect to the fixed part. If he e.g. Similar to a curling iron is foldable formed, you can place the strands of hair between them easier before the strand of hair is subjected to a forming process with a pulling movement away from the head with the help of the desired radiation in the zusammengezwickten state. Optionally, a pull on the hair strand can be exercised to support the forming process. This variant allows the production of hair curls, because the hair strand is guided around the fixed portion of the device during the treatment and thereby the strand is held in a curved shape during the hair shaping.

In an alternative embodiment of this embodiment or in combination therewith, the treatment section may comprise a structured surface for producing curly and / or wavy hair transformations. As a result, in a smooth hair shape, depending on the type of radiation, temporarily or permanently waves or curls are introduced into the hair.

In a further alternative embodiment, the hair styling device may comprise plate-shaped radiation areas with a flat surface. A smoothing plate for hair straightening is preferably provided on each side of the treatment section. These may be formed as in conventional tongs in forceps shape, so that a part of a strand of hair can be easily introduced by folding into the treatment section and then in the folded state, the treatment of the entire tress can be performed.

Another application of such a hair straightener is the production of hair curls. Depending on the kinetics of the process, in principle two ways are conceivable, which are listed here by way of example. An application variant corresponds to the "normal" curling with a hair straightener. The hair will be under train through the Treatment section and then pulled over a rounded structure (eg the hair straightener housing itself). The hair gets a curl shape when reorganizing the bindings. Therefore, a preferred embodiment of the hair styling device according to the invention provides a housing section with a convex surface following the treatment section in the hair treatment direction for producing curly and / or wavy hair transformations.

In a further variant of the application, the interaction zone is already formed with a structured surface and supports the creation of curls or waves. After leaving the treatment section (for example in the form of flat or convex surfaces), the hairs can optionally additionally be guided over structured surfaces in order to possibly assist the forming process. The structured surfaces can be e.g. via a corresponding shaping of the housing, of accessories or optionally provided optical filters. If no optical filters are used or their shaping would be too costly, shaped gratings, which on the one hand lay the hair in the desired shape during the process and besides allow sufficient radiation to the hair, can be used in the region of the radiation areas of the treatment section.

A further preferred embodiment of the hair styling device according to the invention comprises radiation areas with at least one exchangeable hair shaping device with a flat or structured surface. An exchangeable Haarumformeinrichtung can be a herausziehbares or in the radiation range plugging or attachable design element (eg a plate with a textured surface, a grid with a special surface, a filter element with a textured surface, etc.). Thus, depending on the desired application, for example, temporary or permanent or smooth hair shape or curl shape, the result can be additionally influenced by the respective design element. This increases the variability of the hair styling device because the user can individually determine which application to use each time he or she uses it. Through these exchangeable attachments for the device, the user can decide, for example, whether he just wants to use the device for smoothing or curling / wave making.

Optionally, the replaceable hair styling device may trigger automatic control of the performance of the first and second radiation sources. For example, upon insertion, an optical or mechanical sensor can detect the selected interchangeable hair styling device and emit a corresponding signal to the control device which controls the radiation output of the first and second radiation sources in accordance with the mode dictated by the replaceable hair styling device, e.g. temporary or permanent hair shaping.

Since it is known that intense electromagnetic radiation (here, for example, in the UV or UV-near range or also in the IR range) can cause health damage, the radiation sources are housed in a preferred embodiment of the hair styling device according to the invention. Accordingly, such a hair styling device preferably comprises an opaque housing or a radiation-tightly closed treatment section during operation. The opaque housing or the completed treatment section essentially serves to avoid direct eye contact. Alternatively, particularly in the case of a non-opaque radiation area, a circuit breaker for activating the radiation source at the conclusion of the radiation source can be used either by closing the housing or by touching the radiation area with the scalp. For example, touch sensors or optical sensors can be used to ensure that substantially no radiation can escape from the treatment section. Preferably, no or only slightly uncritical radiation can escape from the treatment section in order to prevent damage to the user or other persons present. As an additional protection mechanism, optionally, a controller that controls can be used. that the radiation sources can only be activated when the device is closed. This avoids damage to the skin or eyes, for example.

According to a further preferred embodiment, the hair styling device is equipped with a container that can be applied in or on the housing for the hair-shaping process and a number of substance application elements for applying the substance to the hair before, during or after the irradiation. The container may also be firmly integrated in the housing or on the housing or can be retrofitted as an accessory. The container can be designed for the storage of liquids, gels or easily abradable solids. The substances which are preferably used are chemical or organic compounds which assist the forming process, preferably compounds which intervene in one stage of the hair-shaping process described in more detail above. Exemplary substances are compounds which assist in the re-bond formation of the disulfide bonds previously broken by the action of the radiation. Such compounds are, for example, oxidative chemicals or substances having a functional thiol group. These compounds can also be used in combination, optionally with other functionally similar substances.

Figur 1

eine schematische Draufsicht auf eine erfindungsgemäße Haargestaltungsvorrichtung gemäß einer ersten Ausführungsform,

Figur 2

eine schematische Seitenansicht einer erfindungsgemäßen Haargestaltungsvorrichtung gemäß der ersten Ausführungsform,

Figur 3

eine Schnittansicht entlang der Linie A-A' der erfindungsgemäßen Haargestaltungsvorrichtung aus Figur 1,

Figur 4

eine Schnittansicht der erfindungsgemäßen Haargestaltungsvorrichtung aus Figur 3 bei der Anwendung,

Figur 5

eine Schnittansicht einer erfindungsgemäßen Haargestaltungsvorrichtung gemäß einer zweiten Ausführungsform bei der Anwendung.

The principle of the invention is explained in more detail below with reference to drawings by way of example, the figures show:

FIG. 1

a schematic plan view of a hair styling device according to the invention according to a first embodiment,

FIG. 2

a schematic side view of a hair shaping device according to the invention according to the first embodiment,

FIG. 3

a sectional view taken along the line AA 'of the hair styling device according to the invention FIG. 1 .

FIG. 4

a sectional view of the hair styling device according to the invention FIG. 3 in the application,

FIG. 5

a sectional view of a hair styling device according to the invention according to a second embodiment in the application.

In the FIG. 1 is a plan view of a hair styling device 1 according to a first embodiment shown. The hair styling device 1 has a substantially rectangular upper nipper portion 5 with rounded corners and edges. At the rear end of the upper tong portion, a hinge (not shown) is formed. In this rear section is a power cable 2 for the Permanent power supply and optionally in the form of a charging cable with connector out of the device out. In the upper nipper portion 5 of the power switch 3 (on / off) is housed integrated in the housing. In this embodiment, it is designed, for example, as a slide switch, in addition to the on / off function also to serve as a control device for switching between temporary and permanent hair shaping. Optionally, several power levels can be set by this switch.

In the FIG. 2 the hair styling device 1 is off FIG. 1 shown in the side view. Here, one can clearly see the conventional pliers principle known with conventional hair straighteners with a hinge 4, an upper pliers section 5 with an upper treatment section and a lower pliers section 6 with a lower treatment section. At the upper nipper portion 5 and the lower nipper portion 6 a rubber lip 15 is mounted at the edge of the housing in each case in the front region (approximately in the front third).

Both the upper tong portion 5 and the lower tong portion 6 are designed to be movable with respect to the hinge 4, so that they can be moved from the open position shown here to a closed position. In the open position, the opening angle α is typically about 8 ° to 45 °. Preferred opening angles α are about 12 ° to 30 ° and more preferably about 15 ° to 25 °. Alternatively, one of the two tong portions could be fixed to the hinge 4 or even formed integrally therewith. The hinge then allows a relative movement to the respective other tong section.

In the closed position, the two rubber lips 15 touch approximately over their entire edge length. The rubber lips 15 are made of a flexible material, so that they can flexibly adapt to the interposed hair strands. They serve to hold the strands of hair, so that a tensile force can be exerted on the hair strands. In the area behind the rubber lips shown here are the radiation sections (not shown).

The radiation sections 10, 11 are in the sectional view of the hair styling device in FIG FIG. 3 shown. FIG. 3 shows the hair styling device according to the invention FIG. 1 in a schematic representation along the sectional plane AA 'in the direction of the hinge (not shown here). In the upper tong section 5, the upper radiation section 10 is accommodated with the first radiation sources 20 for the temporary hair shaping and the second radiation sources 30 for the permanent hair shaping. In addition to the upper radiation section 10, the rubber lip 15 is arranged on one side of the upper tong section 5 as a tensile force amplifying means. The upper pliers section 5 forms a housing around the upper radiation section, so that the radiation sources 20, 30 emit radiation to the treatment section 8 only through the section 12. Otherwise, the upper tong portion 5 is formed of a radiation-proof material. The section 12 is here designed as an optical filter for limiting the emissions of the radiated wavelength spectrum.

The lower pliers section 6 is constructed analogously to the upper pliers section 5. The lower radiation section 11 having the first radiation sources 21 for temporary hair-shaping and the second radiation sources 31 for permanent hair-shaping is formed opposite to the upper radiation section 10. Here, too, the lower radiation section 11 comprises an optical filter 13 for limiting the treatment section 8. Otherwise, the lower radiation section 11 is surrounded in a radiation-tight manner by the housing of the lower tong section 6. Here too, adjacent to the lower radiation section 11, a rubber lip 15 is arranged on one side of the housing.

Like from the FIG. 3 As can be seen, the rubber lips 15 are adjacent to the side of the upper and lower radiation portion, in which the second radiation sources 30, 31 are arranged for permanent hair shaping. This creates a more opaque housing on the side of the higher-energy radiation sources.

The number of first and second radiation sources may vary and is designed according to the desired performance of the hair styling device. The radiation sources 20, 30, 21, 31 are connected to the control device, for example the switch 3 (cf. FIG. 1 ) in the upper bar section 5.

In FIG. 4 Fig. 1 schematically shows an application of the above-explained hair styling apparatus according to the first embodiment. The strand of hair 50 is guided through the treatment section 8 and held by the two rubber lips 15 to train. The hair sections lying between the two radiation sections 10, 11 are irradiated with the desired radiation either through the first radiation sources 20, 21 and / or the second radiation sources 30, 31 through the optical filters 12, 13. Depending on the set radiation energy, either hydrogen bonds or the disulfide bonds of the keratin are broken up, which recombine with new binding partners during the subsequent forming process. The forming process takes place here through the housing, in this case the rounded lateral edge of the housing of the upper nipper portion 5, instead. The strand of hair is guided around this shaping part after the irradiation and thus brought into a new shape or form. This movement around the housing of the previously irradiated hair strand should be done within a short time, as few tenths of a second to a few seconds, in order to achieve the desired Haarumformungsergebnis. Depending on the type of hair structure, the possible treatment time can vary from person to person. The individual optimum treatment time, however, the user can find out by simply testing.

In FIG. 5 a second embodiment of the hair styling device 1 according to the invention is shown. This embodiment is less suitable for hair smoothing but is adapted for curling. The housing consists of a fixed pliers element 5 with a first radiation section 10. The fixed pliers element 5 has an oval or elliptical cross section, on one side of which has a small radius of curvature, the first radiation section 10 is arranged. The first radiation section 10 has a convex outer surface 16 toward the treatment section 8. In this first radiation section 10, first radiation sources 20 for the temporary hair-shaping and second radiation sources 30 for permanent hair-shaping are provided, which emit radiation with the respective power into the treatment section 8. The radiation sources 20, 30 are controlled accordingly via the control device (not shown).

The hair styling device 1 comprises, opposite the convex outer surface of the radiation section 10, a movable pliers element 6, which is foldably arranged via a hinge or hinge (not shown). This has in the direction of the fixed pliers element 5 a concave surface 17, which has a similar radius of curvature as the outer surface of the radiation section 10. In the area of the treatment section 8, d. H. opposite to the radiation section 10, the second radiation section 11 is arranged, which emits the radiation into the treatment section 8 via the concave surface. In the radiation section 11, first and second radiation sources 21, 31 are provided, which are shielded outwardly by the housing of the tong element 6. As a result, the treatment section 8 is opaque, that is not directly visible from the outside.

In this opaque treatment section 8, which is formed by the convex radiation section 10 and the concave radiation section 11, a strand of hair 50 is passed. For easier insertion of the strand of hair 50 in the treatment section 8, the movable pliers element 6 can be folded away and brought back to the fixed pliers element 5 for treatment. As a result, the hair tress 50 is guided around the stationary pincer element 5 in a certain region, in this case approximately half the circumference. Here it undergoes a new shape that can be introduced either temporarily or permanently into the treated hair strand by breaking the previous hydrogen bonds or disulfide bonds and by forming new bonds depending on the power applied.

As the hair styling devices described above are exemplary embodiments, they may be modified in a conventional manner by one skilled in the art to a large extent without departing from the scope of the invention. In particular, these devices can not only be used for straightening the hair as in a hair straightener, but they are also suitable for other design methods such as curling. Accordingly, a hair styling device is not only a device having two screed plates, but may also be a brush having corresponding radiating elements and a hair trimmer holding function, with which a tensile force is also applied while heating the hair. In addition, the hair styling device according to the invention can also in hood form, with a flexible or fixed hood (similar to a drying hood) which is largely adapted to the shape of the head, in which a number of radiation openings or radiation elements are provided towards the head. In such a hood conventional curlers, for example made of a radiation-transparent material, can be used as a design element. In addition, the hair styling device according to the invention can also be used to some extent for the drying or support of a hair drying, especially of wet hair, since the radiation emitted into the hair can to a certain extent also cause an evaporation of the water molecules. Furthermore, the use of the indefinite article "on" or "one" does not exclude that the characteristics in question may also be present multiple times. Also, the use of the terms "medium" and "system" does not exclude that such a component is made up of several components.

LIST OF REFERENCE NUMBERS

1

Hair shaping device

2

power cable

3

power switch

4

hinge

5

upper tongs section

6

lower tongs section

8th

treatment section

10

upper radiation section

11

lower radiation section

12

optical filter

13

optical filter

15

rubber lip

16

convex surface

17

concave surface

20

first radiation sources

21

first radiation sources

30

second radiation sources

31

second radiation sources

50

strand of hair

α

opening angle

Claims (13)

1. Device for hair fashioning (1) for use for hair reshaping, comprising:

   - a plurality of first radiation sources (20, 21) for temporary hair reshaping which is reversible after a short time or after minor external environmental influences,

   - a plurality of second radiation sources (30, 31) for permanent hair reshaping which reacts less to environmental influences than the temporary hair reshaping,

   - a control device (3) for the emission of radiation from the first radiation source (20, 21) for temporary hair reshaping and from the second radiation source (30, 31) for permanent hair reshaping to a treatment section (8) for the hair in the device for hair fashioning, and

   - a type of the first or second radiation sources (20, 30, 21, 31),
   characterised in that the radiation sources (20, 30, 21, 31) can be switched by the control device (3) over a particular treatment period such that they serve as the respective other radiation source (20, 30, 21, 31).
2. Device for hair fashioning according to claim 1, wherein the control device (3) is adapted for controlling the output of one or more first and/or second radiation sources (20,21,30,31).
3. Device for hair fashioning according to one of the preceding claims, wherein the second radiation source (30, 31) for permanent hair reshaping comprises a radiation emitter for radiation having a wavelength in the range between approximately 415 and 440 nm.
4. Device for hair fashioning according to one of the preceding claims, wherein the first radiation source (20, 21) for temporary hair reshaping comprises a radiation emitter for radiation having a wavelength in the range between greater than 440 nm and approximately 10 µm.
5. Device for hair fashioning according to one of the preceding claims, having a tensile force transmission device (15) arranged in or essentially adjacent to the treatment section (8), with a contact surface for the transmission of tensile forces to the hair to be reshaped in the treatment section (8).
6. Device for hair fashioning according to one of the preceding claims, wherein the treatment section (8) is delimited by two opposing radiation regions (10, 11) for the emission of radiation from the first and second radiation sources (20, 21, 30, 31).
7. Device for hair fashioning according to claim 6, comprising in each case a radiation region (10, 11) with a convex and a concave surface.
8. Device for hair fashioning according to claim 6 or 7, wherein the treatment section (8) comprises a structured surface for the production of curly and/or wavy hair reshaping.
9. Device for hair fashioning according to claim 6, comprising plate-shaped radiation regions (10, 11) with a flat surface.
10. Device for hair fashioning according to one of the preceding claims, with a housing section following the treatment section (8) in the direction of the hair treatment, with a convex surface for the production of curly and/or wavy hair reshaping.
11. Device for hair fashioning according to one of the preceding claims, wherein the radiation regions (10, 11) comprise a replaceable hair reshaping device with a flat or structured surface.
12. Device for hair fashioning according to one of the preceding claims, with an opaque housing (5, 6) or a treatment section (8) which is closed so as to be radiation-proof in operation.
13. Device for hair fashioning according to one of the preceding claims, with a container which can be attached in or on the housing for substances supporting the hair reshaping process and a plurality of substance application elements for applying the substance to the hair before, during or after the irradiation.

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