CN111374427A

CN111374427A - Hairdressing apparatus with cooling electronic module

Info

Publication number: CN111374427A
Application number: CN201911366191.2A
Authority: CN
Inventors: 马蒂约·皮埃尔·雅克·富因; 杰雷米·德尔霍姆
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2018-12-28
Filing date: 2019-12-26
Publication date: 2020-07-07
Also published as: FR3091152B1; EP3902441B1; EP3902441A1; FR3091152A1; WO2020136228A1

Abstract

The invention relates to a hair styling apparatus (1) comprising a blower module (2) for generating an air flow, a blowing head (3), an electronics module (26) accommodated in the blowing head (3), and a bypass channel (30), the bypass channel (30) being designed to trap a portion of the air flow generated by the blower module (2) in order to ensure cooling of the electronics module (26).

Description

Hairdressing apparatus with cooling electronic module

Technical Field

The present invention relates to the general field of, for example, home hair styling apparatus, and more particularly to an electric hair styling apparatus designed to blow an air stream to dry hair and/or to facilitate styling of the hair.

Background

Hair styling apparatus, such as blower-type hair styling apparatus, designed to allow a user to dry his hair and/or style his hair by blowing an air stream toward the hair have long been known. Generally, such known hair styling apparatus include a blowing head to which a motor-fan set supplies air, and generally a heating element for obtaining a flow of hot air to facilitate drying of the hair.

Nowadays, some technological developments are being noted, the trend being to replace the traditional components of hair styling apparatus with more sophisticated technical devices, even to provide new functions for hair styling apparatus, allowing an optimal treatment of the hair. This development in technology has also created a need to integrate additional circuit boards and electronic circuits within the hair styling apparatus in an effort to ensure that these new components and these new functions function properly.

Such embodiments of circuit boards and electronic circuits have proven to present difficulties in the design of hair styling devices, both in terms of bulk and in terms of compactness and reliability of hair styling devices.

Disclosure of Invention

Therefore, the object of the present invention is to remedy these drawbacks and to propose a new hairdressing apparatus which is compact in construction and improved in reliability.

Another object of the present invention is to propose a new type of hairstyling device which is particularly simple in construction.

Another object of the invention is to propose a new hair styling and hair styling apparatus designed to be particularly ergonomic and practical.

The object of the present invention is achieved by a hair styling apparatus comprising a blower module for generating an air flow, a blowing head, an electronics module housed within said blowing head, and a bypass channel designed to trap a portion of the air flow generated by the blower module to ensure cooling of said electronics module.

Drawings

Other features and advantages of the invention will become more particularly and distinctly apparent from the description given below, by way of illustrative and non-limiting example only, with reference to the accompanying drawings, in which:

fig. 1 shows a perspective view of a preferred embodiment of a hair setting device according to the present invention.

Fig. 2 illustrates a rear view of the hair setting device of fig. 1.

Fig. 3 illustrates a front view of the hair setting device of fig. 1.

Fig. 4 illustrates a side view of the hair setting device of fig. 1.

Fig. 5 illustrates a side view in longitudinal cross-section of the hair setting device of fig. 1-4.

Detailed Description

The hairdressing apparatus 1 according to the invention is generally intended to be used in a domestic environment by users lacking special expertise in hairdressing, i.e. in blow drying and hairdressing, hair styling. Thus, the hair setting device 1 is preferably designed to be grasped and operated by hand, so that it is advantageously a manual hair setting device, preferably portable.

According to the preferred embodiment shown in fig. 1 to 5, the hair setting device 1 forms a hair dryer (or hair dryer) that allows a user to dry his wet or wet hair by blowing a forced air stream (cold or hot) toward the hair and to easily style the hair. However, the invention is not limited to this particular embodiment, for example, it is fully contemplated that the hairdressing apparatus forms a hair-blowing brush or any other hairdressing apparatus with a function of blowing an air flow over the user's hair, which may be used more specifically for hairdressing purposes, such as direct contact with the hair (brushing, straightening, etc.).

The hair setting device 1 according to the present invention includes a blower module 2 and a blowing head 3 designed to generate (forced) air flow, and the air flow generated by the blower module 2 is guided to the outside of the hair setting device 1 through the blowing head 3 so as to be jetted toward the hair of the user. For this purpose, the blowing head 3 is usually provided with at least one air outlet opening through which the air flow generated by the blower module 2 is guided out of the hairdressing apparatus 1.

Preferably, the hairdressing apparatus 1 further comprises a handle 4 (or grip) for hand holding, intended to be gripped by a user to operate the hairdressing apparatus 1, to which handle the blowing head 3 is advantageously connected. The handle 4 extends between a first end 5 and an opposite second end 6, preferably longitudinally along a first axis a-a'. In the preferred embodiment shown in the drawings, the handle 4 is formed by a substantially tubular portion (for example, circular or elliptical, constant or not, in average section), shaped and dimensioned to ensure a firm grip by the hand of the user.

Advantageously, the blowing head 3 protrudes from the handle 4 from one of the first end 5 and the second end 6 of the handle 4, preferably as is the case for the preferred embodiment shown in the figures, and thus preferably forms the end of the hair styling apparatus 1. Whichever arrangement is adopted with respect to the handle 4 of the hair setting device 1, the blowing head 3 is preferably designed to remain permanently attached to the handle 4, and therefore the blowing head 3 is not provided so that it can be removed from the handle 4 of the hair setting device 1 by a user (in normal use).

Preferably, the blower module 2 is embedded inside the hairdressing apparatus 1, which can be arranged inside the blowing head 3. More preferably, however, the blower module 2 of the hair styling apparatus 1 is disposed inside the handle 4, or even more preferably it is assembled to the handle 4 at the first end 5 of the handle 4, as shown. Thus, in other words, according to the illustrated embodiment, the blower module 2 is not located in the blowing head 3. The blowing head 3 may then preferably be connected to the handle 4 at the second end 6 of the handle 4. Thus, the blowing head 3 preferably extends from the second end 6 of the handle 4, while the blower module 2 extends from the first end 5 of the handle 4. In addition, the blower module 2 can then itself be extended by a power cord (not shown) of the hair styling apparatus. Thus, the blower module 2 is advantageously offset from the blowing head 3 and preferably also from the handle 4 of the hairdressing apparatus 1. The blower module 2 can therefore be dimensioned to produce a large flow of air in an economical manner, without affecting the overall volume of the blowing head 3 and the handle 4. In addition, by arranging the blower module 2 and the blowing head 3 at each end 5, 6 of the handle 4, it is advantageously possible to better balance the weight of the hairdressing apparatus 1 by distributing mass on both sides of the handle 4, which makes the hairdressing apparatus more comfortable to use.

In case the blower module 2 is arranged within the handle 4 or assembled to the handle 4 at the first end 5 of the handle 4, the handle 4 may advantageously comprise a guiding channel 7 for guiding the air flow generated by the blower module 2 towards the blowing head 3. The guide channel 7 advantageously guides the air flow through the handle 4, generally in the direction of the first end 5 of the handle 4 towards the second end 6 of the handle 4, as shown in the example of fig. 5.

The blower module 2 of the hair styling apparatus 1 preferably includes a motor-fan set 8, which itself includes an electric motor 9. The motor-fan set 8 may comprise a bladed fan or a conventional axial fan of the screw type. Alternatively, the motor-fan set 8 may advantageously comprise a spiral centrifugal or centrifugal fan. Such an embodiment of a fan of the helical centrifugal or centrifugal type advantageously makes it possible to obtain a very high internal pressure with an equal volume, at the same time as the flow of air is substantially similar to that of a bladed fan or a helical fan, but at a lower speed, and therefore with less noise generated by the motor-fan group 8. Preferably, the motor 9 of the motor-fan set 8 is a brushless motor (a so-called "brushless" motor or a self-controlled synchronous motor with permanent magnets). Such brushless motors 9 are generally stronger, more reliable and lighter than conventional brushed motors. Less noise, more energy saving, and provides greater flexibility and better accuracy in adjusting the speed.

In the preferred embodiment of fig. 1 to 5, the motor-fan set 8 advantageously comprises a centrifugal fan 10 and, as mentioned above, its motor 9 is a brushless motor. The blower module 2 also comprises an internal working chamber 11 in the form of a scroll, the motor-fan set 8 being housed in this internal working chamber 11. As shown in fig. 5, said working chamber 11 may be defined by the inner walls of two half-

shells

12, 13, said two half-

shells

12, 13 being assembled together (for example, by being screwed) and fixed to the handle 4 at the first end 5 of the handle 4. The blower module 2 is provided with an air inlet 14, through which the fan 10 draws ambient air axially into the working chamber 11, and an air outlet, advantageously connected to the air-guiding channel 7 of the handle 4, through which the drawn air is discharged radially outside the working chamber 11. The blower module 2 also preferably includes a grille 15 (which may be removable and replaceable) for protecting the air inlet 14 of the working chamber 11.

Preferably, the hair setting device 1 further comprises a heating element 16, the heating element 16 being designed to raise the temperature of the air flow generated by the blower module 2. The heating element 16 is preferably embedded within the hair setting device 1, and can be disposed within the blow head 3 or within (i.e., inside) the handle 4 of the hair setting handle. More advantageously, as in the preferred embodiment shown in the figures, the heating element 16 is arranged (at least partially) inside the handle 4 and more advantageously inside the guide channel 7 of the handle 4, so as to be inserted into the air flow generated by the blower module 2. This configuration makes it possible in particular to reduce the volume and weight of the blowing head 2 and to simplify the design of the blowing head.

It is generally an electric heating element, operating according to the joule effect principle, whose power is preferably greater than 500W. Preferably, the heating element 16 comprises at least one electrical heating resistor formed by a winding of metal wire (e.g., nichrome) around an insulating core. In the preferred embodiment shown in the figures, the heating element 16 is more precisely in the form of a winding of metal wire (not shown) around an insulating core 17 (for example made of mica), the insulating core 17 having a cross-shaped cross-section and ending with fixing fins. Advantageously, the hair styling apparatus 1 further comprises an insulator 18, for example a tubular member with a circular base, inside which insulator 18 the heating element 16 is mounted, which insulator makes it possible, inter alia, to protect the user from the risk of burns by limiting the heating of the handle 4. As shown in fig. 5, the inner wall of the pipe-shaped insulator 18 may advantageously define all or a part of the above-described airflow guide passage 7.

According to a variant (not shown), the blowing head 3 is fixedly mounted with respect to the handle 4. In this case, then, the blowing head 3 is preferably provided with a single exhaust port.

Instead, according to another variant, the blowing head 3 is mounted movably relative to the handle 4. The blowing head 3 may then, for example, be provided with a single exhaust port. Thus, the movable characteristic of the blowing head 3 makes it possible to change the flow direction of the air blown out by the hair setting device 1, for example, in accordance with the position of the blowing head 3 with respect to the handle 4.

More advantageously, the blowing head 3 is not provided with only a single exhaust opening, but with at least a first exhaust opening 19 and a second exhaust opening 20, which are separate from each other (and therefore different, not coinciding). The blowing head 3 may then advantageously be mounted movable with respect to the handle 4 between at least a first position in which the blowing head 3 blows an air flow generated by the blower module 2 through the first exhaust opening 19 and a second position in which the blowing head 3 blows said air flow through its second exhaust opening 20. Thus, the hair setting device 1 is advantageously designed and constructed to allow alternate selection of one or the other of the first exhaust port 19 and the second exhaust port 20 of the blowing head 3 by displacement of the blowing head 3 relative to the handle 4 (i.e., by change in arrangement and positioning), through which the blowing head 3 will blow an air flow.

Even more preferably, the blowing head 3 is mounted with respect to the handle 4 with a rotational movement about a second axis of rotation B-B', as in the embodiment shown in the drawings. The blowing head 3 is then mounted in a pivotal connection relative to the handle 4 so that it can be rotated relative to the handle 4. Thus, the hair setting device 1 can be advantageously designed and constructed to allow a user to alternately select one or the other of the first exhaust port 19 and the second exhaust port 20 of the blow head 3 through which the blow head 3 will blow an air flow by pivoting the blow head 3 relative to the handle 4.

More preferably, as in the embodiment shown in the drawings, the blowing head 3 is mounted rotatably with respect to the handle 4 about said second axis B-B 'which coincides with the first axis of extension A-A' of the handle 4. However, the second axis of rotation B-B ' may be parallel to said first axis A-A ' (and more or less offset with respect to the first axis A-A '). Thus, the kinematics of the blowing head 3 are simple and reliable, and allow the user to intuitively operate the hairdressing apparatus 1. Also alternatively, it is conceivable for the second axis B-B 'to intersect said first axis a-a' at an angle typically between 5 ° and 15 °.

However, other movements of the blowing head 3 which are movable relative to the sleeve 4 are obviously also possible. For example, according to an alternative variant not shown in the figures, the blowing head 3 can be mounted with a translational movement with respect to the handle 4, for example along a translational axis parallel to or coinciding with the first axis of extension a-a 'of the handle 4, or even along an axis of translation opposite orthogonal to said first axis of extension a-a' of the handle 4. This may be, for example, a pure translational movement of the type of sliding linkage of the blowing head 3 with respect to the handle 4, or even a helical translational movement.

In a preferred case, as mentioned above, when the blowing head 3 is provided with at least a first 19 and a second 20 exhaust opening, these exhaust openings preferably have openings of different geometries. In other words, the useful air passage section of the opening of the first exhaust port 19 is then defined by a contour (or contours) having a shape different from the shape of the contour(s) that respectively define the useful air passage section of the opening of the second exhaust port 20. Thus, the air flow blown by the blowing head 3 will achieve different profiles according to the selected

air outlet

19, 20, so that the user can use the hair setting device 1 according to at least two different blowing configurations.

The first 19 and second 20 exhaust ports are therefore advantageously designed to blow, emit two air flows of different profile, respectively a first and a second air flow, each allowing the user to perform different operations on his hair. For example, the first air flow may correspond to a blow-dry air flow having a broad and dispersed profile and having a high flow velocity (e.g., about 70 m)³H) to allow the user to quickly dry the hair. The second air flow may correspond to a shaping air flow having a concentrated and narrow profile and having a relatively low flow velocity (e.g., about 50 m)³H) to allow the user to precisely select the location at which the second air stream will be blown to his hair. In this way, the user can proficiently and easily achieve styling, e.g. waving, or otherwise straightening of his hair.

For example, in the preferred embodiment in which the hair setting device 1 forms a hair dryer, as shown in the drawings, the first air outlet 19 has an opening having a generally circular shape (fig. 2), and the second air outlet 20 (fig. 1 and 3) has an opening having a generally elongated oval shape. Thus, the hair styling apparatus 1 can be used in a conventional manner for drying wet hair when the blowing head 3 is in said first position relative to the handle 4, the first air flow blown by the blowing head 3 having a substantially cylindrical or conical profile in the vicinity of the first exhaust opening 19. When the blow head 3 is in the second position relative to the handle 4, the hair styling apparatus 1 can then be used to dry hair while facilitating styling of the hair (e.g., to "brush"), the second air stream blown by the blow head 3 forming an air strip near the second air outlet 20 that allows the user to precisely select the location in the hair where the air stream is to be used for styling.

Thus, the hair styling apparatus 1 advantageously allows a user to select between at least a first mode of use (for example for blow drying) and a second mode of use (for example for styling hair) of the hair styling apparatus 1 by changing the arrangement or position of the blowing head 3 relative to the handle 4 (and preferably by simple rotation of the blowing head 3 relative to the handle 4), which makes it possible to select a suitable air flow profile depending on the operation to be performed on the hair in a particularly simple and quick manner.

Preferably, the blowing head 3 comprises a housing 21 (or fairing), the housing 21 defining the external shape and contour of the blowing head 3 and, advantageously, of an end of the hair styling device 1 connected to the handle 4 of said hair styling device 1. The housing 21 may be shaped to give the blowing head 3 a particular aesthetic appearance, for example a generally cylindrical appearance as shown in figures 1 to 5.

In the preferred embodiment shown in the drawings, the housing 21 is advantageously shaped to allow a user to grasp it by hand, so that the user can transmit a pivoting movement by hand directly on the housing 21 (and thus on the blowing head 3) about the second axis of rotation B-B' of the blowing head 3 with respect to the handle 4 to select one of the first and

second air outlets

19 and 20, and the corresponding operating mode of the hair setting device 1.

Advantageously, the blowing head 3 comprises a nozzle body 22 for directing air to flow out of the hairdressing apparatus 1 towards the hair of the user. In the preferred embodiment shown in the drawings (and as is particularly clear in fig. 5), the nozzle body 22 is advantageously embedded in said casing 21, which is formed for example by half shells assembled by snap fastening or by screw fixing. The user rotates the housing 21 of the blowing head 3 about the second axis B-B 'so that the nozzle body 22 co-rotates about said second axis B-B'.

Advantageously, the housing 21 of the blowing head 3 extends longitudinally substantially along a third axis C-C ' orthogonal to the mid-plane of the blowing head 3, said blowing head 3 being arranged with respect to the handle 4 such that the second axis of rotation B-B ' of the blowing head 3 coincides with the first axis of longitudinal extension A-A ' of the handle 4, and said first and second axes A-A ' and B-B ' are aligned on the mid-plane of the blowing head 3. The housing 21 therefore advantageously extends along said third axis C-C ' which is orthogonal both to the first longitudinally extending axis a-a ' of the handle 4 and to the second axis of rotation B-B ' of the blowing head 3, and has substantially equal average lengths on either side of said first and second axes a-a ' and B-B '. In addition to the symmetrical or quasi-symmetrical aesthetic effect thus obtainable, this particular arrangement advantageously contributes to a good overall balance of the hair setting device 1 and a good operability of the hair setting device 1 by the user.

As shown in particular in the sectional view of fig. 5, the preferably unitary nozzle body 22 preferably extends along a third longitudinal extension axis C-C' of the blowing head 3 between: on the one hand, a first end of the nozzle, forming a first exhaust opening 19 of the blowing head 3 (which, as mentioned above, advantageously has an opening of substantially circular overall shape), and, on the other hand, a second, opposite end of the nozzle, forming a second exhaust opening 20 of the blowing head 3 (which second exhaust opening 20, advantageously, has an opening of substantially elliptical overall shape, which is elongated in a direction perpendicular to the second axis B-B' of the blowing head 3). Thus, the first and

second air outlets

19, 20 of the blowing head 3 are arranged on either side of the second rotational axis B-B' of the blowing head 3 relative to the handle 4. The transition of the blowing head 3 from said first position to said second position then advantageously corresponds to a rotation of said blowing head 3 through an angle of 180 ° about said second axis B-B'. This particular arrangement facilitates a practical and particularly intuitive operation of the hairdressing apparatus 1 by the user.

In the preferred embodiment shown in the drawings, the hair setting device 1 further comprises a deflector 23 for directing the air flow generated by the blower module 2 from the guide channel 7 of the handle 4 alternately to one or the other of said first and second

air outlet openings

19, 20, depending on the position occupied by the blowing head 3 pivotally mounted with respect to the handle 4. As shown in fig. 5, the deflector 23 preferably comprises a curved tubular element 24, which is fixedly mounted with respect to the handle 4 and extends the air guide channel 7 of said handle 4 along a first extension axis a-a' of the handle. Thus, when the blowing head 3 is switched from one to the other of said first and second positions, the blowing head 3 advantageously rotates about the curved tubular element 24 of the deflector 23. As shown in fig. 5, the nozzle body 22 advantageously comprises an air inlet hole 25, the size of which is combined with the size of the curved tubular element 24 of the deflector, and through which hole 25 said curved tubular element 24 enters the nozzle body 22 along the second rotation axis B-B' of the blowing head 3. The curved tubular element 24 and the nozzle body 22 are advantageously configured and arranged with respect to each other such that, when the blowing head 3 occupies said first position, the curved tubular element 24 directs the air flow within the nozzle body 22 towards a first nozzle end forming the first exhaust opening 19 of the blowing head 3, while preferably preventing any air leakage towards a second, opposite nozzle end. Instead, the curved tubular element 24 and the nozzle body 22 are advantageously configured and arranged with respect to each other such that, when the blowing head 3 occupies said second position (in this case, after rotation of the blowing head 3 by an angle of 180 ° about the second axis B-B'), the curved tubular element 24 then directs the air flow inside the nozzle body 22 towards the second nozzle end forming the second air outlet 20 of the blowing head 3, while preferably preventing any air leakage towards the first, opposite nozzle end (fig. 5). As shown, the deflector 23 (and in particular the curved tubular element 24 of the deflector) and the nozzle body 22 are advantageously shaped and arranged to deflect the air flow from the air guide channel 7 of the handle 4 by 90 ° towards one or the other of the first and

second exhaust ports

19, 20.

It is clear that a design completely different from the blowing head of the hair setting device according to the invention can be envisaged, in particular in the case where the blowing head comprises only one air outlet and is also not mounted movably relative to the handle of the hair setting device.

The hair setting device 1 according to the invention further comprises an electronic module 26. The electronic module 26 need not necessarily be directly manipulated by the user, or even be inaccessible to the user, and the electronic module 26 is advantageously designed to interact (directly or indirectly) with all or a portion of the various functional components that the hair styling apparatus 1 may include. Which is typically a circuit board, electronic circuit, printed circuit ("PCB") or a set of electrical, electronic or electromechanical components internal to the hair styling device 1. The electronics module 26 can be intended to ensure a particular manner of powering (e.g., having filtering, transforming, or rectifying functions of the current) to ensure control, command, or regulation of the operation of one or the other of the functional components of the hair styling device 1. Optionally, the electronics module 26 may include components such as a battery, a display, one or more microcontrollers, and the like. The electronic module 26 can optionally be connected to a number of sensors and sensors distributed in the hairdressing apparatus 1 for measuring, monitoring physical quantities related to the operation of the hairdressing apparatus 1 (temperature, voltage and current intensity, air speed/flow, rotational speed of the fan 10 of the blower module 2, etc.) to optimally manipulate the operation of the various functional components of the hairdressing apparatus 1.

Preferably, the electronic module 26 is more specifically designed to manipulate or control the operation of the hairdressing apparatus 1. For example, the electronic module 26 may be designed to command the operation of the heating element 16 and therefore comprise a circuit for controlling the power supply and/or the specific regulation (power, temperature, etc.) of said heating element 16.

Preferably, the electronic module 26 is more specifically designed to manipulate the operation of the blower module 2 of the hair styling apparatus 1. Even more preferably, the electronic module 26 is designed to handle only the operation of said blower module 2.

For example, in the preferred case of a blower module 5 comprising a brushless motor 9 as described above, the control of said brushless motor 9 can therefore be advantageously ensured by the electronic module 26. For this purpose, the electronic module 26 may be designed to ensure switching of the current in the motor stator windings (phase control), automatic speed regulation, etc., on the basis of data from position sensors (e.g., hall effect sensors).

As shown, the electronic module 26 is disposed in the blowing head 3 of the hair setting device 1, preferably outside the air flow circulating within the blowing head 3. As shown in fig. 5, the blowing head 3 may comprise a dedicated compartment 27 capable of housing said electronic module 26.

This arrangement helps to limit the overall volume of the hair setting device 1, particularly if the electronics module 26 is designed to handle the operation of the blower module 2 and/or heating element 16 and the blower module 2 and/or heating element 16 is disposed outside of the blowing head 3.

According to the preferred embodiment shown in the drawings, in the case of a blowing head 3 mounted movably relative to a handle 4, in particular in the case of a blowing head 3 mounted rotatably movably relative to a handle 4, it may therefore prove difficult to ensure a simple and secure electrical connection between: on the one hand, the heating element 16 and/or the blower module 2 arranged outside the blowing head 3 (or any other functional part of the hairdressing apparatus 1 which is to be connected to the electronics module 26 and which is to be arranged outside the blowing head 3), and on the other hand, the electronics module 26 which is itself accommodated in the blowing head 3.

Thus, the blowing head 3 is preferably movably mounted relative to the electronics module 26 housed therein, such that displacement, change in position of the blowing head 3 relative to the handle 4 does not affect the respective position of the electronics module 26.

Further, according to an independent aspect, a hair setting apparatus includes: the handle is held by hand; a blowing head connected to the handle; and an electronic module housed in the blowing head, the blowing head itself being movably mounted with respect to the electronic module, thus constituting a single complete invention, irrespective of the other features described herein.

Thus, in the preferred embodiment shown in the drawings, the electronic module 26 is advantageously housed and arranged within the blowing head 3 so as to remain stationary with respect to the blower module 2 and/or with respect to the heating element 16, when the blowing head 3 rotates about the second axis B-B'. Thus, as shown in fig. 5, the nozzle body 22 may be provided with an auxiliary orifice 28 opposite the air intake orifice through which the curved tubular element 24 of the deflector 23 enters the nozzle body 22. At said auxiliary orifice 28, a portion of the curved tubular element 24, to which the electronic module 26 can be fixed directly or by means of a specific support 29, is flush with the nozzle body 22 or protrudes from the nozzle body 22. Obviously, other suitable mounting configurations are contemplated. For example, depending on the volume of the electronic module 26, the electronic module 26 may be mounted on the back of the curved tubular element 24 of the deflector 23.

In this way, the electrical connection between the heating element 16 and/or the blower module 2 (or any other functional part of the hairdressing apparatus 1 that is to be connected to the electronic module 26 and that is to be arranged outside the blowing head 3) and the electronic module 26 housed in the blowing head 3 can advantageously be made very simply, for example using conventional electrical wires (not shown), without the risk of damaging the wires by twisting, or without the need to implement complex moving electrical connection means (for example, connection types with rotary joints). Therefore, the manufacturing cost of the hairdressing apparatus 1 is limited and the reliability thereof is improved.

The electronics module 26 is housed within the blowing head 3 and although preferably arranged outside the air flow circulating through the blowing head, the temperature of the electronics module 26 may rise significantly when the air flow generated by the blower module 3 is heated by the heating element 16 before being blown out of the device 1 by the blowing head 3. In addition, even if the heating element 16 is not activated or the hair setting device does not include such a heating element, the electronic module 26 may heat up itself during its normal operation, particularly under the influence of the current flowing through it. In all cases, if the temperature of the electronic module 26 is not controlled and exceeds a certain tolerance threshold, this may result in a high risk of malfunction or even complete failure of the electronic module 26.

This is why the hair styling apparatus 1 according to the invention very advantageously comprises a bypass channel 30, which bypass channel 30 is designed to trap a part of the air flow generated by the blower module 2 to ensure cooling of the electronics module 26. The bypass channel 30 is therefore designed and configured to ensure that a portion of the forced airflow generated by said blower module 2 is collected and diverted-before it is reheated, if necessary, by the heating element 16-in order to thus direct and blow the extracted portion of the airflow as close as possible to the electronic module 26 to ensure forced cooling thereof.

In the case of a blower module 2 arranged within the handle 4 or assembled to the handle 4 at the first end 5 of the handle 4, the bypass passage 30 preferably extends at least partially within the handle 4. The bypass channel 30 is thus advantageously incorporated in the handle 4. Even more preferably, the hair setting device 1 can be designed such that the guide channel 7 and the bypass channel 30 advantageously extend parallel to each other within the handle 4 along the first axis of extension a-a' of the handle 4.

For example, in the preferred embodiment shown in the figures, the bypass channel 30 of the hair-styling apparatus 1 advantageously opens on the one hand at the air outlet of the working chamber 11 of the blower module 2, in order to trap a part of the air flow generated by the blower module 2 there (fresh, that is to say not yet heated by the heating element 16), and on the other hand at the side of the electronics module 26 accommodated in the blowing head 3.

As shown in the example of fig. 5, the bypass passage 30 may be formed along all or part of the length of the handle 4 by a free space provided between the inner wall of the handle 4 and the outer wall of the pipe-shaped insulator 18. This design also advantageously makes it possible to cool the handle 4, which improves the comfort of use of the hairdressing apparatus 1.

Said bypass channel 30 can advantageously extend inside a double wall 31 forming the back of the curved tubular element 24 at the blowing head 3 and then pass through a support 29 as described above, by means of which support 29 the electronic module 26 is advantageously fixed to the curved tubular element 24.

Advantageously, the hair styling apparatus 1 can comprise a circuit for re-injecting a portion of the air flow trapped in the air flow blown by the blowing head 3 (primary air flow), so that after assisting the cooling of the electronic module 26, a portion of the air flow trapped by the bypass channel 30 can itself be blown towards the hair of the user through the one or

more air outlets

19, 20 of the blowing head 3. In this way, the cooling of the electronic module 26 does not significantly affect the flow rate of the air flow generated by the blower module 2 and blown by the blowing head 3.

For example, the nozzle body 22 of the blowing head 3 may be provided with an orifice (not shown) for re-injecting the portion of the gas flow trapped directly inside the nozzle body 22, preferably downstream of the curved tubular element 24 of the deflector 23.

Alternatively (or additionally), the housing 21 of the blowing head 3 may be provided with an opening (or equivalent) through which all or part of the trapped portion of the air flow can escape out of the blowing head 3, and thus out of the hair styling device 1. Therefore, a part of the air flow for cooling the electronic module 26 can be discharged toward the outside of the hair setting device 1 without affecting (or at least without significantly affecting) the temperature of the (main) air flow blown by the blowing head 3 toward the user's hair.

Depending on the temperatures that the electronic module 26 can effectively withstand, the bypass passage 30 is advantageously sized according to the desired level of cooling. In general, the bypass passage 30 may be sized to allow 1 to 10m³The air flow between/h passes therein to allow for efficient cooling of the electronics module 26.

It is clear that the invention is not limited to the preferred embodiment shown in the figures and that the bypass channel 30 for the air flow can have a design and construction different from those described above, in particular according to the relative maintenance arrangement of the various components of the hairdressing apparatus (blower module, electronics module, heating element, etc.) and according to whether the blowing head has a movable characteristic with respect to the handle.

Such a bypass channel 30 therefore allows a particularly simple, effective and very cheap cooling of the electronic module 26, without the use of cumbersome auxiliary cooling means, whether passive (for example of the radiator type) and/or active (for example of the fan type).

Therefore, the hairdressing apparatus 1 is highly reliable in operation, while being simple, compact, and inexpensive in design.

Claims

1. A hair styling apparatus (1) comprising a blower module (2) for generating an air flow, a blowing head (3), an electronics module (26) housed in the blowing head (3), and a bypass channel (30), the bypass channel (30) being designed to trap part of the air flow generated by the blower module (2) to ensure cooling of the electronics module (26), characterized in that the hair styling apparatus (1) comprises a handle (4) for hand gripping, which extends between a first end (5) and an opposite second end (6), the blower module (2) being arranged in the handle (4) or being assembled to the handle (4) at the first end (5).

2. Device (1) according to the preceding claim, wherein the electronic module (26) is designed to ensure the manipulation or control of the operation of the hairdressing device (1).

3. Device (1) according to the preceding claim, wherein the electronic module (26) is designed to command the operation of the blower module (2).

4. Device (1) according to the preceding claim, wherein said blower module (2) comprises a brushless motor (9), the operation of which is ensured by said electronic module (26).

5. The apparatus (1) according to any one of the preceding claims, comprising a circuit for re-injecting the portion of the air flow trapped in the air flow blown out by the blowing head (3).

6. The device (1) according to any one of the preceding claims, wherein the blowing head (3) is connected to the handle (4) at the second end (6).

7. Device (1) according to the preceding claim, wherein the handle (4) comprises a guide channel (7), the guide channel (7) being intended to guide the air flow generated by the blower module (2) towards the blowing head (3).

8. Device (1) according to any one of claims 6 and 7, wherein the bypass channel (30) extends at least partially in the handle (4).

9. Device (1) according to claims 7 and 8, wherein the guide channel (7) and the bypass channel (30) extend parallel to each other within the handle (4).

10. Device (1) according to any one of claims 6 to 9, comprising a heating element (16), said heating element (16) being intended to raise the temperature of the air flow generated by the blower module (2), said heating element (16) being arranged inside the handle (4).

11. An apparatus (1) according to any of claims 6 to 10, wherein the blowing head (3) is movably mounted with respect to the handle (4).

12. Apparatus (1) according to the preceding claim, wherein the blowing head (3) is mounted rotatably movable with respect to the handle (4).

13. The device (1) according to any one of claims 11 and 12, wherein the blowing head (3) is movably mounted with respect to the electronics module (26).