Hairdressing equipment with cooling electronic modules

Abstract

The present invention relates to a hairdressing device (1), comprising a hair dryer module (2) for generating an airflow, a blow head (3), an electronic module (26) accommodated in the blow head (3), and a bypass channel (30), wherein the bypass channel (30) is designed to capture part of the airflow generated by the hair dryer module (2) to ensure cooling of the electronic module (26).

Description

Technical Field

[0001] The present invention relates to the general field of, for example, home use hairdressing devices, and more particularly to electric hairdressing devices designed to blow air to dry hair and / or facilitate styling hair. Background Art

[0002] For a long time, some hairdressing devices, such as hairdressing devices of the hair dryer type, are known, which are designed to allow a user to dry his hair and / or style his hair by blowing an air flow toward the hair. Usually, such known hairdressing devices include a blower head, to which a motor fan unit supplies air, and generally a heating element for obtaining a hot air flow to facilitate drying the hair.

[0003] Nowadays, a certain technological development can be noticed, the tendency of which is to replace the traditional components of hairdressing equipment with higher performance technical devices, or even to give hairdressing equipment new functions, capable of optimally treating the hair. This technological development also brings with it the need to integrate additional circuit boards and electronic circuits inside the hairdressing equipment, in order to ensure the good functioning of these new components and these new functions.

[0004] It turns out that such an embodiment of a circuit board and an electronic circuit presents some difficulties in the design of a hairdressing device, both in terms of volume, compactness and reliability of the hairdressing device. Summary of the invention

[0005] The object of the present invention is therefore to remedy these drawbacks and to propose a new hairdressing device which is compact and has improved reliability.

[0006] Another object of the invention is to provide a novel hair styling device which has a particularly simple construction.

[0007] Another object of the present invention is to provide a novel hair styling device which is particularly ergonomically designed and practical.

[0008] The object of the present invention is achieved by a hairdressing device, which includes a hair dryer module for generating an airflow, a blow head, an electronic module accommodated in the blow head, and a bypass channel, wherein the bypass channel is designed to capture part of the airflow generated by the hair dryer module to ensure cooling of the electronic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other characteristics and advantages of the invention will become more specific and apparent from a reading of the description given below, with reference to the accompanying drawings, given purely by way of illustrative and non-limiting examples, in which:

[0010] Figure 1A perspective view showing a preferred embodiment of a hairdressing device according to the present invention is shown.

[0011] Figure 2 Shows Figure 1 view of hairdressing equipment.

[0012] Figure 3 Shows Figure 1 Front view of hairdressing equipment.

[0013] Figure 4 Shows Figure 1 view of a hairdressing equipment.

[0014] Figure 5 Shows Figures 1 to 4 A longitudinal sectional side view of a hairdressing device. DETAILED DESCRIPTION

[0015] The hairdressing device 1 according to the invention is generally intended to be used in a home environment by users who lack special professional skills in hairdressing, i.e. in blow-drying and hairdressing, hair styling. As such, the hairdressing device 1 is preferably designed to be grasped and operated by hand, so it is advantageously a manual hairdressing device, preferably portable.

[0016] According to Figures 1 to 5 In the preferred embodiment shown, the hairdressing device 1 forms a hair dryer (or hair dryer), which allows the user to dry his wet or damp hair by blowing a forced airflow (cold or hot airflow) towards the hair, and facilitates hair styling. However, the invention is not limited to this specific embodiment, for example, it is entirely conceivable that the hairdressing device forms a hairbrush or any other hairdressing device with the function of blowing airflow on the user's hair, which can be more specifically used for hairdressing purposes, such as direct contact with the hair (brushing, straightening, etc.).

[0017] The hairdressing device 1 according to the present invention comprises a hair dryer module 2 and a blow head 3 designed to generate a (forced) airflow, wherein the airflow generated by the hair dryer module 2 is guided to the outside of the hairdressing device 1 through the blow head 3 so as to be sprayed toward the hair of the user. To this end, the blow head 3 is usually provided with at least one exhaust port, through which the airflow generated by the hair dryer module 2 is guided to the outside of the hairdressing device 1.

[0018] Preferably, the hairdressing device 1 further comprises a handle 4 (or grip) for hand-holding, intended to be grasped by a user to operate the hairdressing device 1, to which the blowing head 3 is advantageously connected. The handle 4 extends between a first end 5 and an opposite second end 6, preferably extending longitudinally along a first axis A-A'. In the preferred embodiment shown in the figures, the handle 4 is formed by a generally tubular portion (e.g., the average cross-section is circular or oval, constant or non-constant), the shape and size of which are designed to ensure a firm grip by the user's hand.

[0019] Advantageously, and preferably as is the case with the preferred embodiment shown in the drawings, the blowing head 3 projects from one of the first end 5 and the second end 6 of the handle 4 and thus preferably forms an end of the hairdressing device 1. Regardless of which arrangement is adopted relative to the handle 4 of the hairdressing device 1, the blowing head 3 is preferably designed to remain permanently attached to the handle 4, so that the blowing head 3 is not arranged to be detachable from the handle 4 of the hairdressing device 1 by a user (in normal use).

[0020] Preferably, the blower module 2 is embedded inside the hairdressing device 1, it can be arranged inside the blower head 3. However, more preferably, the blower module 2 of the hairdressing device 1 is arranged 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. Therefore, in other words, according to the illustrated embodiment, the blower module 2 is not located in the blower head 3. Then, the blower head 3 can be preferably connected to the handle 4 at the second end 6 of the handle 4. Therefore, the blower 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 extend through the power cord (not shown) of the hairdressing device. Therefore, the blower module 2 is advantageously offset from the blower head 3, and preferably also offset from the handle 4 of the hairdressing device 1. Therefore, the size of the blower module 2 can be determined so as to generate a large air flow in an economical way, without affecting the overall volume of the blower head 3 and the handle 4. Furthermore, by arranging the blow dryer module 2 and the blow head 3 at each end 5, 6 of the handle 4, the weight of the hairdressing device 1 can be better balanced by distributing the mass on both sides of the handle 4, which makes the hairdressing device more comfortable to use.

[0021] In the case where the hair dryer module 2 is arranged in 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 guide channel 7 for guiding the airflow generated by the hair dryer module 2 towards the blowing head 3. The guide channel 7 advantageously guides the airflow through the handle 4, generally in a direction along the first end 5 of the handle 4 towards the second end 6 of the handle 4, such as Figure 5 as shown in the example.

[0022] The hair dryer module 2 of the hairdressing device 1 preferably comprises a motor fan group 8, which itself comprises a motor 9. The motor fan group 8 may comprise a blade fan or a spiral conventional axial flow fan. Alternatively, the motor fan group 8 may advantageously comprise a spiral centrifugal or centrifugal fan. Such a spiral centrifugal or centrifugal fan embodiment advantageously enables a very high internal pressure to be obtained with equal volume, while the air flow is substantially similar to that of a blade fan or a spiral fan, but at a lower speed, so that the motor fan group 8 generates less noise. Preferably, the motor 9 of the motor fan group 8 is a brushless motor (a so-called "brushless" motor or a self-controlled synchronous motor with a permanent magnet). Such a brushless motor 9 is generally stronger, more reliable and lighter than a conventional brushed motor. Less noise, more energy-efficient, and provides greater flexibility and better precision when adjusting the speed.

[0023] exist Figures 1 to 5 In a preferred embodiment of the invention, the motor fan unit 8 advantageously comprises a centrifugal fan 10, and its motor 9 is a brushless motor as described above. The hair dryer module 2 further comprises an internal working chamber 11 in the form of a vortex, in which the motor fan unit 8 is accommodated. Figure 5 As shown, the working room 11 can be defined by the inner walls of two half shells 12, 13, which are assembled together (for example, by fixing with screws) and fixed to the handle 4 at the first end 5 of the handle 4. The hair dryer module 2 is provided with an air inlet 14, through which the fan 10 sucks ambient air axially into the working room 11, and an exhaust port, which is advantageously connected to the air guide channel 7 of the handle 4, through which the sucked air is radially discharged outside the working room 11. The hair dryer module 2 also preferably includes a grille 15 (possibly removable and repositionable) for protecting the air inlet 14 of the working room 11.

[0024] Preferably, the hairdressing device 1 further comprises a heating element 16 designed to increase the temperature of the airflow generated by the blower module 2. The heating element 16 is preferably embedded in the hairdressing device 1 and can be arranged in the blow head 3 or in the handle 4 of the hairdressing handle (i.e., inside). More advantageously, as in the preferred embodiment shown in the figures, the heating element 16 is (at least partially) arranged in the handle 4 and is more advantageously located in the guide channel 7 of the handle 4 so as to be inserted into the airflow generated by the blower module 2. This configuration makes it possible in particular to reduce the volume and weight of the blow head 2 and to simplify the design of the blow head.

[0025] It is typically an electric heating element, operating according to the principle of the Joule effect, and its power is preferably greater than 500 W. Preferably, the heating element 16 comprises at least one electric heating resistor formed by a winding of a metal wire (for example, a nickel-chromium alloy) around an insulating core. In the preferred embodiment shown in the accompanying drawings, the heating element 16 is more precisely in the form of a winding of a 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 provided with fixing fins at the ends. Advantageously, the hairdressing device 1 also comprises an insulating body 18, for example a tubular part with a circular base, in which the heating element 16 is mounted, which in particular makes it possible to protect the user from the risk of burns by limiting the heating of the handle 4. As Figure 5 As shown, the inner wall of the tubular insulation body 18 can advantageously define all or part of the above-mentioned airflow guiding channel 7.

[0026] According to a variant (not shown), the blowing head 3 is fixedly mounted relative to the handle 4. In this case, the blowing head 3 is then preferably provided with a single exhaust opening.

[0027] On the contrary, according to another variant, the blowing head 3 is movably mounted relative to the handle 4. Thus, the blowing head 3 can be provided with a single exhaust port, for example. Thus, the movable nature of the blowing head 3 makes it possible to change the flow direction of the air blown out of the hairdressing device 1, for example, depending on the position of the blowing head 3 relative to the handle 4.

[0028] More advantageously, the blowing head 3 is not provided with only a single exhaust port, but is provided with at least a first exhaust port 19 and a second exhaust port 20, which are separate from each other (thus being different and not overlapping). Then, the blowing head 3 can advantageously be mounted relative to the handle 4 so as to be movable between at least a first position and a second position, in which the blowing head 3 blows the airflow generated by the hair dryer module 2 through the first exhaust port 19, and in which the blowing head 3 blows the airflow through its second exhaust port 20. Therefore, the hairdressing device 1 is advantageously designed and constructed to allow the 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 a change in arrangement and positioning), and the blowing head 3 will blow out the airflow through the selected exhaust port.

[0029] Even more preferably, as in the embodiment shown in the drawings, the blowing head 3 can be mounted rotatably and movably about the second rotation axis BB' relative to the handle 4. Thus, the blowing head 3 is mounted relative to the handle 4 in a pivotally connected manner so that it can be rotated relative to the handle 4. Therefore, the hairdressing device 1 can be advantageously designed and constructed to allow the user to alternately select one or the other of the first exhaust port 19 and the second exhaust port 20 of the blowing head 3 by pivoting the blowing head 3 relative to the handle 4, and the blowing head 3 will blow out airflow through the selected exhaust port.

[0030] More preferably, as in the embodiment shown in the figures, the blowing head 3 is mounted for rotation relative to the handle 4 about the second axis BB', which coincides with the first axis of extension A-A' of the handle 4. However, the second axis of rotation BB' may be parallel to the first axis A-A' (and more or less offset relative 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 device 1. Also alternatively, it is conceivable that the second axis BB' intersects the first axis A-A' at an angle typically between 5° and 15°.

[0031] However, other movements in which the blowing head 3 can be moved 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 so as to be movable in translation relative to the handle 4, for example along a translation axis parallel to or coinciding with the first axis of extension AA' of the handle 4, or even along a translation axis on the contrary orthogonal to said first axis of extension AA' of the handle 4. This can be, for example, a pure translation movement of the blowing head 3 relative to the handle 4 of the sliding link type, or even a helical translation movement.

[0032] In a preferred case, as described above, when the blow head 3 is provided with at least the first exhaust port 19 and the second exhaust port 20, these exhaust ports preferably have openings with different geometric shapes. In other words, the useful air passage section of the opening of the first exhaust port 19 is defined by a contour (or multiple contours), and the shape of the contour is different from the shape of the (one or more) contours of the useful air passage section of the opening of the second exhaust port 20. Therefore, the airflow blown out by the blow head 3 will realize different contours according to the selected exhaust ports 19, 20, so that the user can use the hairdressing device 1 according to at least two different blowing configurations.

[0033] Therefore, the first exhaust port 19 and the second exhaust port 20 are advantageously designed to blow and spray two airflows of different profiles, namely the first airflow and the second airflow, each of which allows the user to perform different operations on his hair. For example, the first airflow may correspond to a blow-drying airflow having a broad and dispersed profile and a high flow rate (e.g., about 70 m / s). 3 / h), so as to allow the user to quickly dry the hair. The second airflow may correspond to a styling airflow having a concentrated and narrow profile and having a lower flow rate (e.g., about 50 m / h). 3 / h), to allow the user to accurately select the position where the second airflow will blow to his hair. In this way, the user can skillfully and easily achieve the styling of his hair, such as wavy, or on the contrary straighten it.

[0034] For example, as shown in the drawings, in a preferred embodiment in which the hairdressing device 1 forms a hair dryer, the first exhaust port 19 has an opening ( Figure 2 ), and the second exhaust port 20 ( Figure 1 and Figure 3 ) has an opening with a generally elongated oval shape. Thus, when the blow head 3 is in the first position relative to the handle 4, the hairdressing device 1 can be used to blow dry wet hair in a conventional manner, and the first airflow blown by the blow head 3 has a substantially cylindrical or conical profile near the first exhaust port 19. When the blow head 3 is in the second position relative to the handle 4, the hairdressing device 1 can then be used to blow dry the hair while facilitating hair styling (e.g., "brushing"), and the second airflow blown by the blow head 3 forms an air strip near the second exhaust port 20, which allows the user to accurately select the position in the hair to be styled with the airflow.

[0035] The hairdressing device 1 thus advantageously allows the user to choose between at least a first mode of use (e.g. for blow-drying) and a second mode of use (e.g. for styling the hair) of the hairdressing device 1 by changing the arrangement or position of the blow-drying head 3 relative to the handle 4 (and preferably by a simple rotation of the blow-drying head 3 relative to the handle 4), which makes it possible to select a suitable air flow profile according to the operation to be performed on the hair in a particularly simple and quick manner.

[0036] Preferably, the blow head 3 comprises a housing 21 (or fairing) which defines the outer shape and contour of the blow head 3 and, advantageously, defines the outer shape and contour of one end of the hairdressing device 1 which is connected to the handle 4 of the hairdressing device 1. The housing 21 may be shaped so as to give the blow head 3 a particularly aesthetic appearance, for example Figures 1 to 5 The roughly cylindrical appearance shown.

[0037] In the preferred embodiment shown in the drawings, the housing 21 is advantageously shaped to allow the user to grasp it by hand, so that the user can directly transmit a pivoting movement about the second rotation axis BB' of the blowing head 3 relative to the handle 4 on the housing 21 (and therefore on the blowing head 3) by hand to select one of the first and second exhaust ports 19 and 20, and the corresponding operating mode of the hairdressing device 1.

[0038] Advantageously, the blow-drying head 3 comprises a nozzle body 22 for directing air towards the hair of the user to flow out of the hairdressing device 1. In the preferred embodiment shown in the drawings (and in Figure 5The nozzle body 22 is advantageously embedded in the housing 21, which is formed, for example, by half shells assembled by snap fastening or screw fixing. The user rotates the housing 21 of the blowing head 3 around the second axis BB', thereby rotating the nozzle body 22 around the second axis BB'.

[0039] Advantageously, the housing 21 of the blowing head 3 extends longitudinally substantially along a third axis CC' orthogonal to the mid-plane of the blowing head 3, said blowing head 3 being arranged relative to the handle 4 so that the second axis of rotation BB' of the blowing head 3 coincides with the first axis of longitudinal extension A-A' of the handle 4, and said first axis A-A' and the second axis B-B' are aligned on the mid-plane of the blowing head 3. Thus, the housing 21 advantageously extends along said third axis CC' orthogonal both to the first axis of longitudinal extension A-A' of the handle 4 and to the second axis of rotation B-B' of the blowing head 3, and having substantially equal average lengths on either side of said first axis A-A' and the second axis 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 hairdressing device 1 and to a good operability of the hairdressing device 1 by the user.

[0040] As especially Figure 5 As shown in the cross-sectional view of , the preferably unitary nozzle body 22 preferably extends along the third longitudinal extension axis CC' 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 advantageously has an opening with a generally circular shape, as described above), and, on the other hand, a second opposite end of the nozzle forming a second exhaust opening 20 of the blowing head 3 (advantageously, this second exhaust opening 20 has an opening with a generally elliptical shape, which is elongated in a direction perpendicular to the second axis BB' of the blowing head 3). Thus, the first exhaust opening 19 and the second exhaust opening 20 of the blowing head 3 are arranged on either side of the second rotation axis BB' of the blowing head 3 relative to the handle 4. The conversion of the blowing head 3 from the first position to the second position then advantageously corresponds to a rotation of the blowing head 3 by an angle of 180° about the second axis BB'. This particular arrangement facilitates a practical and particularly intuitive operation of the hairdressing device 1 by the user.

[0041] In the preferred embodiment shown in the drawings, the hairdressing device 1 further comprises a deflector 23 for directing the airflow generated by the hair dryer module 2 from the guide channel 7 of the handle 4 alternately to one or the other of the first exhaust port 19 and the second exhaust port 20, depending on the position occupied by the blow head 3 pivotally mounted relative to the handle 4. Figure 5As shown, the deflector 23 preferably comprises a curved tubular element 24 which is fixedly mounted relative to the handle 4 and extends the air guide channel 7 of the handle 4 along a first extension axis AA' of the handle. Thus, when the blowing head 3 is transferred from one of the first and second positions to the other, the blowing head 3 advantageously rotates around the curved tubular element 24 of the deflector 23. Figure 5 As shown, the nozzle body 22 advantageously comprises an air inlet orifice 25, the dimensions of which are combined with the dimensions of the bent tubular element 24 of the deflector and through which said bent tubular element 24 enters the nozzle body 22 along the second axis of rotation BB' of the blowing head 3. The bent tubular element 24 and the nozzle body 22 are advantageously constructed and arranged relative to each other so that when the blowing head 3 occupies said first position, the bent tubular element 24 directs the air flow inside the nozzle body 22 towards the first nozzle end forming the first exhaust opening 19 of the blowing head 3, while preferably preventing any air leakage towards the second opposite nozzle end. Conversely, the bent tubular element 24 and the nozzle body 22 are advantageously constructed and arranged relative to each other so that when the blowing head 3 occupies said second position (in this case, after the blowing head 3 has been rotated by an angle of 180° about the second axis BB'), the bent tubular element 24 then directs the air flow inside the nozzle body 22 towards the second nozzle end forming the second exhaust opening 20 of the blowing head 3, while preferably preventing any air leakage towards the first opposite nozzle end ( Figure 5 As shown, the deflector 23 (particularly the bent 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 exhaust port 19 and the second exhaust port 20.

[0042] Obviously, completely different designs than the blowing head of the hairdressing device according to the invention are conceivable, in particular if the blowing head comprises only one exhaust opening and is also not mounted movably relative to the handle of the hairdressing device.

[0043] The hairdressing 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 inaccessible to the user, and is advantageously designed to interact (directly or indirectly) with all or part of the various functional components that the hairdressing device 1 may comprise. It is typically a circuit board, an electronic circuit, a printed circuit (“PCB”) or a set of electrical, electronic or electromechanical components inside the hairdressing device 1. The electronic module 26 may be intended to ensure a specific power supply mode (for example, with a filtering, conversion or rectification function of the current) to ensure the control, command or regulation of the operation of one or another of the functional components of the hairdressing device 1. Optionally, the electronic module 26 may comprise components such as a battery, a display, one or more microcontrollers, etc. The electronic module 26 may optionally be connected to a certain number of sensors and sensitive elements distributed in the hairdressing device 1, which are used to measure and monitor physical quantities related to the operation of the hairdressing device 1 (temperature, voltage and current intensity, air speed / flow, rotation speed of the fan 10 of the blower module 2, etc.), so as to optimally control the operation of the various functional components of the hairdressing device 1.

[0044] Preferably, the electronic module 26 is more specifically designed to operate or control the operation of the hairdressing device 1. For example, the electronic module 26 may be designed to operate the operation of the heating element 16 and thus comprise circuits for controlling the power supply and / or specific regulation (power, temperature, etc.) of said heating element 16.

[0045] Preferably, the electronic module 26 is more specifically designed to control the operation of the hairdryer module 2 of the hairdressing device 1. Even more preferably, the electronic module 26 is designed to control the operation of said hairdryer module 2 only.

[0046] For example, in the preferred case where the hair dryer module 5 comprises a brushless electric motor 9 as described above, the control of said brushless electric motor 9 can therefore advantageously be ensured by the electronic module 26. To this end, the electronic module 26 can be designed to ensure the switching of the current in the stator winding of the motor (phase control), automatic speed regulation, etc., based on data from a position sensor (e.g. a Hall effect sensor).

[0047] As shown in the figure, the electronic module 26 is arranged in the blow-drying head 3 of the hairdressing device 1, preferably outside the air flow circulating in the blow-drying head 3. Figure 5 As shown, the blowing head 3 may comprise a dedicated compartment 27 capable of housing said electronic module 26 .

[0048] This arrangement helps to limit the overall volume of the hairdressing device 1 , in particular if the electronic module 26 is designed to control the operation of the hairdryer module 2 and / or the heating element 16 and the hairdryer module 2 and / or the heating element 16 are arranged outside the blowing head 3 .

[0049] According to the preferred embodiment shown in the drawings, in the case where the blowing head 3 is mounted movably relative to the handle 4, in particular in the case where the blowing head 3 is mounted rotatably relative to the handle 4, it may prove difficult to ensure a simple and secure electrical connection between: on the one hand, the heating element 16 and / or the hair dryer module 2 arranged outside the blowing head 3 (or any other functional component of the hairdressing device 1, which will be connected to the electronic module 26 and will be arranged outside the blowing head 3), and on the other hand, the electronic module 26 itself housed in the blowing head 3.

[0050] Therefore, the blowing head 3 is preferably mounted movably relative to the electronic module 26 accommodated therein, so that a displacement or position change of the blowing head 3 relative to the handle 4 does not affect the corresponding position of the electronic module 26 .

[0051] Furthermore, according to an independent aspect, a hairdressing device comprises: a hand-held handle; a blowing head connected to the handle; and an electronic module, the electronic module being housed in the blowing head, the blowing head itself being movably mounted relative to the electronic module, thus constituting a separate complete invention, independent of the other features described herein.

[0052] Therefore, in the preferred embodiment shown in the figures, the electronic module 26 is advantageously housed and arranged in the blowing head 3 so as to remain immobile relative to the blower module 2 and / or relative to the heating element 16 when the blowing head 3 rotates about the second axis BB'. Figure 5 As shown, the nozzle body 22 may be provided with an auxiliary orifice 28, which is opposite to the air inlet orifice through which the curved tubular element 24 of the deflector 23 enters the nozzle body 22. At the auxiliary orifice 28, a portion of the curved tubular element 24 is flush with the nozzle body 22 or protrudes from the nozzle body 22, and the electronic module 26 can be fixed to this portion directly or through a specific support 29. Obviously, other suitable mounting configurations can be envisioned. For example, depending on the volume of the electronic module 26, the electronic module 26 can be mounted on the back of the curved tubular element 24 of the deflector 23.

[0053] In this way, the electrical connection between the heating element 16 and / or the blower module 2 (or any other functional component of the hairdressing device 1 to be connected to the electronic module 26 and 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 conductive wires (not shown), without the risk of damaging the wires due to twisting, or without the need to implement complex mobile electrical connection means (for example, connection type with a swivel joint). As a result, the manufacturing costs of the hairdressing device 1 are limited and its reliability is improved.

[0054] The electronic module 26 is housed inside the blowing head 3 and, although preferably arranged outside the airflow circulating through the blowing head, the temperature of the electronic module 26 may rise significantly when the airflow 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 hairdressing device does not include such a heating element, the electronic module 26 may itself heat up during its normal operation, in particular 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 will lead to a high risk of malfunction or even complete failure of the electronic module 26.

[0055] This is why the hairdressing device 1 according to the invention very advantageously comprises a bypass channel 30 designed to capture a portion of the airflow generated by the blower module 2 in order to ensure cooling of the electronic module 26. The bypass channel 30 is therefore designed and configured to ensure the collection and diversion of a portion of the forced airflow generated by the blower module 2 - before it is reheated, if necessary, by the heating element 16 - in order thus to guide and blow the extracted portion of the airflow as close as possible to the electronic module 26 in order to ensure forced cooling thereof.

[0056] In case the hair dryer module 2 is arranged in the handle 4 or assembled to the handle 4 at the first end 5 of the handle 4, the bypass channel 30 preferably extends at least partially in the handle 4. The bypass channel 30 is thus advantageously incorporated into the handle 4. Even more preferably, the hairdressing device 1 may be designed such that the guide channel 7 and the bypass channel 30 extend in the handle 4, advantageously along the first extension axis AA' of the handle 4, parallel to each other.

[0057] For example, in the preferred embodiment shown in the accompanying drawings, the bypass channel 30 of the hairdressing device 1 is advantageously open on the one hand at the exhaust port of the working chamber 11 of the hair dryer module 2 to capture a portion of the air flow generated by the hair dryer module 2 (fresh, that is, not yet heated by the heating element 16), and on the other hand next to the electronic module 26 accommodated in the blowing head 3.

[0058] like Figure 5 As shown in the example in , the bypass channel 30 can be formed along the entire or partial length of the handle 4 by a free space arranged between the inner wall of the handle 4 and the outer wall of the tubular insulating body 18. This design also advantageously allows the handle 4 to be cooled, which improves the comfort of use of the hairdressing device 1.

[0059] Said bypass channel 30 can advantageously extend at the blowing head 3 in a double wall 31 forming the back side of the curved tubular element 24 and then pass through a support 29 as described above, by means of which the electronic module 26 is advantageously fixed to the curved tubular element 24 .

[0060] Advantageously, the hairdressing device 1 may include a loop for re-injecting a portion of the airflow captured in the airflow (main airflow) blown out by the blow head 3, so that after helping the electronic module 26 to cool down, a portion of the airflow captured by the bypass channel 30 itself can be blown toward the user's hair through the one or more exhaust ports 19, 20 of the blow head 3. In this way, the cooling of the electronic module 26 will not significantly affect the flow rate of the airflow generated by the hair dryer module 2 and blown out by the blow head 3.

[0061] For example, the nozzle body 22 of the blowing head 3 may be provided with orifices (not shown) for reinjecting a portion of the air flow captured directly inside the nozzle body 22 , preferably downstream of the curved tubular element 24 of the deflector 23 .

[0062] Alternatively (or additionally), the housing 21 of the blow-drying head 3 may be provided with an opening (or equivalent) through which all or part of the captured airflow portion may escape outside the blow-drying head 3 and, therefore, outside the hairdressing device 1. Thus, a part of the airflow for cooling the electronic module 26 may be discharged towards the outside of the hairdressing device 1 without affecting (or at least without significantly affecting) the temperature of the (main) airflow blown by the blow-drying head 3 towards the hair of the user.

[0063] The bypass passage 30 is advantageously sized according to the desired cooling level, depending on the temperature that the electronic module 26 can effectively withstand. Typically, the bypass passage 30 may be sized to allow 1 to 10 m 3 An air flow of between 100 Å / h passes therethrough to allow effective cooling of the electronic module 26 .

[0064] Obviously, the present invention is not limited to the preferred embodiments shown in the figures, and the bypass channel 30 for the air flow may have a design and construction different from those described above, in particular depending on the relative holding arrangement of the various components of the hairdressing device (hair dryer module, electronic module, heating element, etc.), and depending on whether the blow-drying head has a movable characteristic relative to the handle.

[0065] Such a bypass channel 30 thus allows a particularly simple, effective and very cheap cooling of the electronic module 26 , without the need to use bulky auxiliary cooling means, whether passive (for example of the heat sink type) and / or active (for example of the fan type).

[0066] The hairdressing device 1 thus has a high operational reliability and is at the same time simple, compact and inexpensive in design.

Claims

1. A hairdressing device (1), comprising a hair dryer module (2) for generating an airflow, a blow head (3), an electronic module (26) accommodated in the blow head (3), and a bypass channel (30), wherein the bypass channel (30) is designed to capture part of the airflow generated by the hair dryer module (2) to ensure cooling of the electronic module (26), characterized in that: The hairdressing device (1) comprises a handle (4) for holding by hand, the handle extending between a first end (5) and an opposite second end (6), the hair dryer module (2) being arranged in the handle (4) or assembled to the handle (4) at the first end (5), The blowing head (3) is connected to the handle (4) at the second end (6), The bypass channel (30) extends at least partially in the handle (4).

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

3. The device (1) according to claim 2, wherein: The electronic module (26) is designed to control the operation of the blower module (2).

4. The device (1) according to claim 3, wherein: The blower module (2) comprises a brushless electric motor (9), the control of which is ensured by the electronic module (26).

5. The device (1) according to any one of claims 1 to 4, comprising a circuit for reinjecting the part of the air flow captured by the bypass channel (30) into the air flow blown by the blowing head (3).

6. The device (1) according to any one of claims 1 to 4, wherein: The handle (4) comprises a guide channel (7), and the guide channel (7) is used to guide the airflow generated by the hair dryer module (2) towards the direction of the blowing head (3).

7. The device (1) according to claim 6, wherein: The guide channel (7) and the bypass channel (30) extend parallel to each other in the handle (4).

8. The device (1) according to any one of claims 1 to 4, comprising a heating element (16) for increasing the temperature of the air flow generated by the hair dryer module (2), the heating element (16) being arranged in the handle (4).

9. The device (1) according to any one of claims 1 to 4, wherein: The blowing head (3) is movably mounted relative to the handle (4).

10. The device (1) according to claim 9, wherein: The blowing head (3) is mounted in a rotatable manner relative to the handle (4).

11. The device (1) according to claim 9, wherein: The blowing head (3) is movably mounted relative to the electronic module (26).

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