Apparatus and method for drying and styling hair

Abstract

An apparatus for drying and / or styling hair is disclosed. The apparatus uses both conduction and convection heating of a user's hair to dry wet or damp hair, or to style the user's hair. The apparatus has a main body portion with a fan and a heater for generating a heated air stream. The heated air stream flows into a head portion having a base and a heat exchanger. During use, the user's hair contacts the outer surface of the base and is heated by conduction. Air vents are also provided in the base so that the heated air can also heat the user's hair by convection.

Description

Technical Field

[0001] This invention relates to an apparatus for styling human (or imaginary animal) hair, for example, after washing or as part of a styling process. That is, the hair may be moistened (or “towel-dried”) before using the invention, and then the invention can be used for drying and styling. Alternatively, the apparatus can be used to style dry hair. This drying and styling of hair can be done by the user on their own hair, or, for example, by a hairstylist. It should also be noted that the term “moistened” as used herein should be interpreted broadly to include not only hair moistened with water, but also hair moistened with liquids other than water. For example, hair may be moistened with solvent-based colorants, and the invention can be used for drying and / or styling. Background Technology

[0002] Traditional handheld hair dryers, incorporating an electric fan to blow out streams of cool or hot air to dry human hair, are well-known. The fan draws ambient air into the body of the hair dryer and directs the airflow towards the hair to be dried. When hot air is blown, an electric heating element, typically integrated into the body of the hair dryer, heats the airflow before it leaves the dryer. Optionally, the hair dryer may be equipped with a concentrator nozzle attachment for enhancing and directing the airflow, or a diffuser attachment for delivering a gentler airflow.

[0003] However, traditional hair dryers can often be noisy, heavy, and bulky. Furthermore, these hair dryers can be inconvenient to use and may not achieve the desired results for users (especially home users who manage their own hair), particularly when it comes to styling hair while it's drying. For example, hair dryers are typically used in conjunction with a hairbrush or comb or another styling tool to style hair during drying. The styling process can be, for example, straightening the hair or giving it "volume and fullness" (by applying styling products such as mousse, gel, wax, hairspray, etc., before or after, if desired). Manipulating a hair dryer and a brush (or comb, etc.) around the head simultaneously can be clumsy for the user and usually requires a certain level of skill to achieve the desired results.

[0004] Therefore, while using a traditional hair dryer is the fastest way to dry hair, achieving the desired styling results can be very difficult and / or time-consuming. For this, users must use brushes and / or additional hair styling tools.

[0005] As an alternative to traditional hair dryers, some people use so-called "wet straighteners." These straighteners dry and straighten hair by pulling damp hair between a pair of heating plates mounted on opposite arms of the device. These devices tend to use conductive heating on damp hair at high temperatures (typically 185°C to 230°C), but they can damage hair and / or may be considered damaging due to cavitation noises ("sizzle") or the high temperatures near the denaturing temperature of damp hair.

[0006] Hot air brushes can also be used to dry and style hair. While this type of product combines drying and styling capabilities in a single handheld device, these devices tend to be relatively slow when drying hair. Users can first dry their hair with a traditional hair dryer before switching to a hot air brush for final drying and styling of damp hair. Therefore, there is a need for a more efficient hair styling device that eliminates or reduces the need for a separate device for drying hair, provides more efficient hair drying and styling, and is easy for the user to operate.

[0007] Another problem with hot air brushes is the uneven temperature distribution on the device's outer surface. For example, the portion of the device loaded with wet or damp hair can cool relatively quickly, while the unloaded portion remains relatively hot. This temperature imbalance leads to reduced drying and styling performance. Therefore, a hair styling device is needed that can more effectively balance the temperature distribution on the device.

[0008] The applicant describes a handheld hot air brush in WO2022 / 13866 that heats hair using hot air and conduction through a heated base. The base is heated by a heat exchanger, which is also heated by hot air. The applicant has further developed this product, and the invention described herein is a result of that development. Summary of the Invention

[0009] The present invention provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; a first heater for heating the hair contact surface of the head portion; and a second heater for heating the plurality of bristles, wherein the second heater includes at least one infrared (IR) heater or induction heater.

[0010] In one aspect, the first heater includes at least one conductive strip configured to generate heat when an electric current flows through it, and wherein the at least one conductive strip is mounted to thermally contact the hair contact surface to heat the hair contact surface by conduction.

[0011] On the other hand, the second heater includes at least one conductive strip configured to generate heat when an electric current flows through it, and wherein the at least one conductive strip is mounted to thermally contact a plurality of bristles to heat the plurality of bristles by conduction.

[0012] In another aspect, the second heater includes at least one coil configured to generate heat when current flows through it, and wherein the at least one coil is wound around a plurality of bristles to heat the bristles by conduction. In another aspect, the second heater includes a plurality of coils, each coil being electrically connected together in series. In yet another aspect, the second heater includes a plurality of coils, each coil being electrically isolated from the other coils to allow independent control of each coil.

[0013] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging a section of hair; and at least one infrared (IR) heater for providing heat energy to heat the base portion, wherein the at least one infrared heater extends along the length of the head portion and has a non-uniform heat distribution along the length of the head portion; and means for improving the heating uniformity of the at least one infrared heater on the head portion along its length.

[0014] In another aspect, the device for improving the heating uniformity of the head along its length includes a head that is selectively anodized or coated. In another aspect, the device for improving the heating uniformity of the head along its length includes multiple IR heaters arranged in series or individually controlled along the length of the head. In another aspect, the device for improving the heating uniformity of the head along its length includes a thermally insulated end of the head to minimize heat loss to the handle portion and the ends of the device.

[0015] On the other hand, each of the multiple IR heaters is independently controllable, and improving the heating uniformity along the length of the head includes adjusting the power of at least one IR heater based on the sensed temperature of the hair contact surface. For example, the heaters can be individually controlled to maintain a specific temperature at the base, which could be a low minimum background temperature (e.g., 100 degrees Celsius). Once hair is detected in certain areas / ranges of the styling apparatus, the IR heaters in those areas / ranges can be controlled to increase the temperature in those areas / ranges.

[0016] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging a section of hair; and at least one infrared (IR) heater for providing heat energy to heat the base portion, wherein the at least one IR heater extends along the length of the head portion, wherein the IR heater includes a heating filament wound along its length, and wherein the winding density of the filament varies along the length of the IR heater to adjust the heating effect of the at least one IR heater on the base portion.

[0017] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a cylinder having a hair contact surface for engaging a section of hair, wherein the cylinder is divided into multiple sections; and multiple infrared (IR) heaters for providing heat energy to heat the cylinder, wherein a corresponding IR heater is provided for each section of the cylinder for heating a corresponding portion of the hair contact surface.

[0018] On the other hand, the cylinder is formed from extruded thermally conductive material. Furthermore, multiple IR heaters are independently controlled.

[0019] On the other hand, a corresponding temperature sensor is provided to sense the temperature of the hair contact surface of each zone, and a controller is provided to control the heating provided by each IR heater based on the sensed temperature of the hair contact surface in the corresponding zone.

[0020] On the other hand, multiple IR heaters are centrally located within the interior space of the cylinder, and thermal shielding is provided between adjacent IR heaters.

[0021] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion coupled to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair; and at least one infrared (IR) heater for providing thermal energy to heat the base portion, wherein the at least one infrared heater includes: at least one filament, the at least one filament generating radiant heat in response to an electric current passing through it; and a glass housing surrounding the filament, wherein the glass housing is formed of tempered glass.

[0022] On the other hand, the glass housing is made of Schott glass. On the other hand, the filament is one of the following: a short-wave tungsten filament, a fast-medium-wave tungsten filament, or a carbon fiber filament.

[0023] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging with a section of hair; and at least one infrared (IR) heater for providing thermal energy to heat the base portion, wherein the at least one infrared heater includes: at least one filament, the at least one filament generating radiant heat in response to an electric current passing through it; and a glass housing surrounding the filament, wherein the glass housing is mounted in the head portion by a multi-spring suspension system that reduces impact forces on the IR heater.

[0024] On the other hand, the IR heater is slender, and a multi-spring suspension system is provided at each end of the IR heater.

[0025] On the other hand, the device includes a plurality of bristles externally mounted to the base. On the other hand, the bristles are spring-loaded to the base to absorb the energy of impact forces on the IR heater. On the other hand, the device also includes a pleated area feature and / or a damper in the handle portion to absorb the energy of impact forces on the IR heater.

[0026] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging a section of hair; at least one infrared (IR) heater for providing heat energy to heat the base portion; a plurality of vents located in the base portion; and means for blocking line of sight through the plurality of vents toward the infrared heater.

[0027] On the other hand, a device for blocking the line of sight toward the IR heater through a plurality of vents includes: a plurality of internal air channels, wherein each internal air channel is formed by a wall configured to block IR radiation from at least one IR heater from propagating through the internal air channel toward at least one of the plurality of vents.

[0028] On the other hand, the means for blocking the line of sight toward the IR heater through the plurality of vents includes: a patterned coating applied to at least one IR heater to selectively block IR radiation emitted from at least one IR heater in a direction toward the plurality of vents.

[0029] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; at least one infrared IR heater for providing heat energy to heat the base portion; and a top surface of the base portion including a plurality of openings corresponding to the plurality of bristles, wherein the plurality of bristles are retractable below the top surface of the base portion.

[0030] On the other hand, multiple bristles can retract below the top surface of the base via a rotational motion of the bristles, the rotational motion of the bristles being actuated by the rotation of the handle. On another side, multiple bristles can retract below the top surface of the base via a rotational motion of the bristles. On yet another side, multiple bristles can retract below the top surface of the base via a radial motion of the bristles, the radial motion of the bristles being actuated by the rotation of the handle. Furthermore, multiple bristles can retract below the top surface of the base via an axial motion of the bristles, the axial motion of the bristles being actuated by either a linear or rotational motion of the handle.

[0031] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; and at least one infrared (IR) heater for providing heat energy to heat the base portion, wherein a subset of the plurality of bristles is mounted on a corresponding plate mounted on the base portion, the base portion being rotatable by 180 degrees, wherein the rotation of each plate is actuated by rotation of the handle portion.

[0032] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a segment of hair and a plurality of bristles for engaging the segment of hair; at least one infrared (IR) heater for providing heat energy to heat the base portion; at least one motion sensor for sensing movement of the apparatus; at least one humidity sensing device for sensing the humidity of the segment of hair; and a controller for processing data received from the at least one motion sensor and the at least one humidity sensing device, wherein in response to determining that the apparatus is stationary for a predetermined period of time and that the segment of hair is dry, the temperature of the hair contact surface and / or the plurality of bristles is increased, wherein in response to determining that the apparatus is in motion, the temperature of the hair contact surface and / or the plurality of bristles is maintained or decreased.

[0033] On the other hand, in response to determining that the device is stationary for a predetermined period of time and that a section of hair is dry, the airflow from the base is reduced, and in response to determining that the device is moving, the airflow from the base is maintained or increased.

[0034] In another aspect, at least one humidity sensing device includes at least one of the following: a humidity sensor, a temperature sensor, a capacitive sensor, and combinations thereof. In another aspect, at least one motion sensor includes at least one of the following: an accelerometer, a gyroscope, and combinations thereof.

[0035] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base portion having a hair contact surface for engaging a section of hair; and at least one infrared (IR) heater for providing thermal energy to heat the base portion, wherein the base portion is made of a porous material.

[0036] In another aspect, the porous material is at least one of the following: sintered bronze, Duocel, aluminum foam, and Alupor. In yet another aspect, the porous material is configured to have a pore size and / or pore density that provides a predetermined back pressure for airflow through the base.

[0037] The present invention also provides an apparatus for drying or styling hair, comprising: a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; at least one infrared (IR) heater for providing heat energy to heat the base portion; and a semiconductor switching device for controlling a surge current supplied to the at least one IR heater during the initial heating process of the at least one IR heater.

[0038] On the other hand, semiconductor switching devices are three-terminal bidirectional thyristor switching circuits.

[0039] The present invention also provides an apparatus for drying or styling hair, comprising a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; and at least one infrared (IR) heater for providing heat energy to heat the base portion, wherein each of the plurality of bristles has a safety device to prevent contact burns.

[0040] On the other hand, safety devices to prevent contact burns include conductive ends inserted into each of the multiple bristles and / or non-conductive coatings applied to each of the multiple bristles.

[0041] On the other hand, safety devices to prevent contact burns include non-conductive ends (e.g., plastic bristle ends) molded onto each of a plurality of bristles, wherein each of the plurality of bristles is a metal bristle.

[0042] The present invention also provides an apparatus for drying or styling hair, comprising a handle portion; a head portion connected to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; at least one IR infrared heater for providing heat energy to heat the base portion; and at least one temperature sensor for sensing the temperature of the hair contact surface of the base portion, wherein the at least one temperature sensor is provided with an IR shielding device to protect the sensor from IR radiation.

[0043] On the other hand, IR shielding devices include materials with low emissivity. In other words, IR shielding devices include reflective materials capable of reflecting IR radiation.

[0044] The present invention also provides an apparatus for drying or styling hair, comprising a handle portion; a head portion coupled to the handle portion, the head portion including a base having a hair contact surface for engaging a section of hair and a plurality of bristles for engaging the section of hair; at least one infrared (IR) heater for providing heat energy to heat the base portion; at least one motion sensor for sensing movement of the apparatus; and a controller for processing data received from the at least one motion sensor to determine movement of the apparatus, wherein in response to determining that the apparatus has been stationary for a predetermined period of time, the apparatus is switched from an active mode to an idle mode, and wherein in response to determining that the apparatus is in motion, the apparatus is either kept in an active mode or switched to an active mode.

[0045] On the other hand, in idle mode, the controller controls the electrical energy supplied to at least one IR heater to reduce the heat energy supplied to the base. Alternatively, in idle mode, the controller controls the electrical energy supplied to at least one IR heater to stop supplying heat energy to the base.

[0046] On the other hand, in idle mode, the controller controls the fan and / or air heater of the device used for hair styling. For example, the controller may control the electrical energy supplied to the fan and / or air heater. Alternatively, the controller may be configured to reduce the fan and / or air heater when the device is switched to its idle mode (e.g., when the device is placed on a table). Furthermore, the controller may be configured to increase the fan and / or air heater when the device is switched to its active mode (e.g., when the device is picked up and used).

[0047] On the other hand, at least one motion sensor includes at least one of the following: an accelerometer, a gyroscope, and a combination thereof. Attached Figure Description

[0048] Embodiments of the invention will now be described by way of example only and with reference to the accompanying drawings, wherein:

[0049] Figure 1a A perspective view of a combined hair drying / styling device (“styling device”) is shown;

[0050] Figure 1b It shows Figure 1a The equipment used when drying and / or styling hair;

[0051] Figure 2a It shows Figure 1a A cross-sectional view of the base configuration of the shaping equipment;

[0052] Figure 2b It shows Figure 1a A cross-sectional view of another configuration of the base of the shaping equipment;

[0053] Figure 3 It shows Figure 1a A perspective sectional view of the base of the shaping equipment;

[0054] Figure 4 It shows Figure 1a Another perspective sectional view of the base of the shaping device;

[0055] Figure 5 It shows Figure 1a Another perspective sectional view of the base of the shaping device;

[0056] Figure 6a shows Figure 1a Another perspective sectional view of the base of the shaping device;

[0057] Figure 6b shows an enlarged portion of the base shown in Figure 6a;

[0058] Figure 7a It shows Figure 1a A cross-sectional view of the configuration of the IR heat source in the base of the molding device;

[0059] Figure 7b It shows Figure 1a A cross-sectional view of another configuration of the IR heat source in the base of the shaping device;

[0060] Figure 7c It shows Figure 1a A cross-sectional view of another configuration of the IR heat source in the base of the shaping device;

[0061] Figure 8aA cross-sectional view of the base is shown, which illustrates the spring suspension system used to support the IR heat source;

[0062] Figure 8b It shows Figure 8a The longitudinal sectional view of the base shown presents another view of the spring suspension system;

[0063] Figure 9 It shows Figure 1a A cross-sectional view of another configuration of the base of the shaped device, showing the internal air passage;

[0064] Figure 10 It shows the use of Figure 1a A row of heat-conducting brushes in the molding equipment;

[0065] Figure 11a A cross-sectional perspective view of the base with a first retractable bristle mechanism is shown, in which the bristles are exposed;

[0066] Figure 11b A cross-sectional perspective view of the base with a first retractable bristle mechanism is shown, wherein the bristles are retracted;

[0067] Figure 12a A cross-sectional perspective view of the base with a second retractable bristle mechanism is shown, in which the bristles are exposed;

[0068] Figure 12b A cross-sectional perspective view of the base with a second retractable bristle mechanism is shown, wherein the bristles are retracted;

[0069] Figure 13a A cross-sectional perspective view of the base with a third retractable bristle mechanism is shown, in which the bristles are exposed;

[0070] Figure 13b A cross-sectional perspective view of the base with a third retractable bristle mechanism is shown, wherein the bristles are retracted.

[0071] Figure 13c A cross-sectional perspective view of the axial mechanism for the third retractable bristle mechanism is shown.

[0072] Figure 14a A cross-sectional perspective view of the base with a fourth retractable bristle mechanism is shown, in which the bristles are exposed;

[0073] Figure 14b A cross-sectional perspective view of the base with a fourth retractable bristle mechanism is shown, wherein the bristles are retracted; and

[0074] Figure 15 It is used for control Figure 1a The diagram shows the power supply and control circuitry of the hair drying / styling equipment. Detailed Implementation

[0075] Overview

[0076] Now refer to Figure 1a and Figure 1b This section describes exemplary combined hair drying / styling devices in a general manner, by way of example only.

[0077] Figure 1a A perspective view of a combined hair drying / styling device 10 is shown. This device 10 is operable to dry wet or damp hair while simultaneously styling it. The styling process may, for example, provide the hair with "volume and fullness" (by applying styling products such as mousse, gel, wax, hairspray, etc., before or after, if desired).

[0078] The device includes a main body (handle) 12 and a head 16. A control button or switch 14 may be provided on the device 10 so that the device 10 can be turned on or off along with an indicator light to indicate whether the power is on. When the device 10 is turned on and ready for use, a sound generator (not shown) may also play a sound.

[0079] The head 16 includes a base 22 that can be heated, thereby heating the hair in contact with the outer surface of the base 22 for styling. The head 16 also has a relatively high thermal mass so that it can accommodate a high-energy source (e.g., an IR bulb, a tube heater, etc.) to transfer heat to the hair when it comes into contact with the user's hair. The thermal mass of the head is typically between 50 J / K and 220 J / K (e.g., 59 J / K for a head made of metal (e.g., an aluminum alloy such as ADC12) with a length of 32 mm and a wall thickness of 2 mm).

[0080] The head 16 also includes a plurality of bristles 20 extending through an opening in the base 22.

[0081] The bristles 20 guide the hair as it passes the head 16, allowing the user better control over styling. Furthermore, the combination of heat transfer from the base 22 and the use of the bristles enables the user to style the hair and facilitates the use of a wider range of styling techniques. The bristles 20 also prevent the user from contacting the heated surface of the base 22. Ventilation holes 40 can also be provided in the base 22. These ventilation holes 40 can be configured to allow air to flow through and out of the base 22.

[0082] Figure 1b The device 10 is shown for use in drying and / or styling hair. (Example) Figure 1b As shown, the device is a handheld and portable device.

[0083] During use, as hair passes over the surface of the head 16, the outer surface of the base 22 conducts heat to the user's hair, allowing the user to dry wet or damp hair more quickly. Typically, the temperature of the outer surface of the base 22 can be approximately 120°C. This temperature enables the effective drying of wet or damp hair while avoiding audible hissing sounds and damage to the hair.

[0084] Traditionally, such as Figure 2a As shown, in order to heat the base 22, a conductive heater 24 (e.g., a ceramic heater or a cylindrical heater) is typically provided inside the base 22. For example, the conductive heater may be located at the center inside the base 22, and the conductive heater is in contact with or connected to the inner surface 26 of the base 22 via fins 28 made of a thermally conductive material (e.g., metal).

[0085] In use, the conductive heater in contact with the fins heats the fins through conduction, and the fins in turn heat the inner surface of the base 22 (also through conduction).

[0086] Or, such as Figure 2b As shown, the conductive heater can contact or connect to the inner surface of the base 22 via multiple fins 28a to 28e made of a thermally conductive material (e.g., metal). Similarly, in the case of only one fin, in use, the conductive heater in contact with the fin heats the fin via conduction, and the fin in turn heats the inner surface of the base 22 (also via conduction). However, advantageously, by providing multiple fins, the heat supplied to the base 22 can be more evenly distributed around the surface of the base 22, thereby improving the overall heating of the base 22.

[0087] It should be understood that the multiple fins 28 are typically arranged to extend radially from the conductive heater to the surface of the base 22; however, this does not preclude other possible arrangements of fins in which the conductive heater is not centrally located within the base 22.

[0088] Furthermore, it should be understood that, although Figure 2b Only one conductive heater and a set of fins are depicted in the figure, but multiple heaters with multiple fins corresponding to themselves can be arranged along the length of the base 22 to advantageously ensure a more uniform heating effect along the entire length of the base 22.

[0089] As an alternative to a conductive heater, one (or more) infrared (IR) heat sources 42 (e.g., IR bulbs) can be provided. The IR heat source provides heat in the form of electromagnetic radiation (also known as thermal radiation) with wavelengths ranging from 700 nanometers (nm) to 1 millimeter (mm).

[0090] It should be understood that several different possible configurations of such an IR bulb can be used in the molding device 10, each with its own unique advantages. For example, an IR heat source, such as a single IR bulb extending along the length of the base 22, can be provided. Advantageously, unlike conventional heat sources that transfer heat through thermal conduction or convection, a single IR bulb extending along the length of the base 22 will transfer its heat via thermal radiation, which can propagate through a vacuum. Thus, the IR bulb does not need to physically contact the surface of the base 22 to heat the base 22, and it does not need to include... Figure 2a and Figure 2b The fins shown simplify the manufacturing of the base 22.

[0091] Alternatively, multiple IR bulbs can be arranged along the length of the base 22, each of which provides its own heat to heat the base 22. For example, one or more rows of IR bulbs can be arranged along the length of the base 22. Additionally or alternatively, IR bulbs can be arranged off-center from the central axis extending along the length of the base 22 to allow different levels of heating to be provided to different sides of the base 22. Advantageously, by arranging multiple IR bulbs as described above, each individual IR bulb will transfer its own heat via thermal radiation to heat the base 22, thereby providing a more uniform distribution of heat along the length of the base 22 and / or across all sides of the base 22.

[0092] Alternatively, instead of arranging multiple IR bulbs along the length of base 22, a single IR bulb can be used, but this single IR bulb is configured such that the filaments (e.g., coil windings) within the IR bulb are arranged in a non-uniform manner along the length of the IR bulb. For example, a greater density (concentrated) of coil windings can be provided in a specific region of the IR bulb (e.g., the end of the IR bulb) compared to the density of coil windings (winding) in other regions of the IR bulb, thereby forming an IR bulb that radiates heat non-uniformly. Advantageously, these filaments can be designed to control the power output of the IR bulb along a specific region of base 22, resulting in a more uniform heat distribution along the length of base 22.

[0093] Alternatively or additionally, the inner surface of the base 22 (e.g., the surface adjacent to the IR bulb) can be configured (e.g., by anodizing) to adjust the heat absorption capacity of specific areas of the base 22. Advantageously, this adjustment of the heat absorption capacity of specific areas of the base 22 can help ensure a more uniform distribution of heat along the length of the base 22.

[0094] Alternatively or additionally, instead of arranging multiple IR bulbs concentrically along the length of the base 22, the IR bulbs can be arranged non-concentrically along the length of the base 22 to allow independent heating control of different sides of the base 22. For example, two rows of IR bulbs can be arranged facing two opposite sides of the base 22 to allow selective control of heating of one side of the base 22 and the other side. For example, different rows of IR bulbs (or individual IR bulbs) can be controllable to allow different heating effects, such that different sides of the base receive more heat than other sides. Advantageously, this individual control of the IR bulbs can allow compensation for overcooling of one side of the base relative to the other side due to one side of the base having a larger amount of hair, wetter hair, etc.

[0095] In addition to the IR bulb arrangement described above, an IR bulb suspension system can also be provided to secure and suspend one or more IR bulbs in the base 22. It should be understood that several different possible configurations of such a suspension system exist, one of which is described in more detail below. Advantageously, by securing the IR bulbs to the suspension system, the durability of the IR bulbs is enhanced because such a suspension system helps absorb vibrations and reduces the possibility of IR bulb breakage.

[0096] In addition to the aforementioned IR bulb device and IR bulb system, the styling device 10 may be equipped with retractable bristles, which advantageously allows the device to be used like a conventional curling iron. It is understood that several different configurations are possible for implementing the retractable bristles in the styling device 10. For example, the bristles may be retracted using a rotary mechanism, wherein the bristles of the styling device 10 extend from the base 22 through an opening in its top surface in response to rotation of an element of the styling device 10 (such as its handle). In this case, the bristles may be arranged on a set of guide rails that allow the entire set of bristles to rotate in response to rotation of the handle of the styling device 10.

[0097] Alternatively, the bristles can be extended and retracted using a radial mechanism, wherein the bristles of the shaping device 10 extend from the base 22 through an opening in its top surface in response to rotation of an element of the shaping device 10 (such as its handle). In this case, the bristles can also be arranged on a set of guide rails that allow the entire set of bristles to move radially in response to rotation of the handle of the shaping device 10.

[0098] Alternatively, the bristles can be extended and retracted using an axial mechanism, wherein the bristles of the shaping device 10 extend from the base 22 through an opening in its top surface in response to pushing / pulling an element of the shaping device 10 (such as its handle). In this case, the bristles can also be arranged on a set of guide rails that allow the entire set of bristles to move axially in response to rotating the handle of the shaping device 10.

[0099] Alternatively, the bristles can be extended and retracted using a planetary gear mechanism, wherein the bristles of the shaping device 10 are arranged along the length of multiple panels, which are then arranged in an elevated manner on top of the base 22.

[0100] Advantageously, by providing one of the aforementioned bristle retraction mechanisms, the bristles of the styling device 10 can be retracted when not in use. This further reduces the amount of space occupied by the styling device 10 during storage. In addition, since the bristles can be retracted as described above, users can use the styling device 10 to style their hair without using the bristles, for example, when the base 22 is used as a curling iron.

[0101] Detailed description

[0102] Now refer to Figures 3 to 15 Let’s discuss each configuration and arrangement outlined above in more detail.

[0103] Figure 3 It shows Figure 1a A cross-sectional view of the base of the combined hair drying / styling equipment shown.

[0104] like Figure 3 As shown, by way of example only, an IR heat source (bulb) 42 is provided concentrically within the base 22 of the hair drying / styling device 10 (hereinafter referred to as "styling device 10" for simplicity). The IR heat source 42 is fixedly positioned at both ends of the base 22 by fixing devices 44a and 44b, which ensure that the IR bulb 42 remains concentrically positioned within the base 22. The fixing devices can be any suitable type of ridge structure that rigidly fixes the IR bulb in place. Alternatively, the fixing devices can be spring-loaded fixing devices that allow lateral movement of the IR bulb 42 within the base. Regardless of the fixing devices used, the fixing devices are also configured to allow an electrical connection of the IR bulb 42 to a power source.

[0105] Advantageously, such as Figure 3 As shown, since the IR heat source 42 provides heating through thermal radiation that can propagate through a vacuum, the IR heat source (e.g., an IR bulb) does not need to physically contact the inner surface 26 of the base 22 to heat the inner surface. Instead, radiation is emitted uniformly from the IR heat source 42 in all directions, which then propagates toward the curved surface of the base (as indicated by the arrows) and heats the inner surface 26. Because the inner surface 26 is heated by thermal radiation emitted from the IR heat source 42 rather than via thermal conduction, there is no need to install features such as... Figure 2a and Figure 2b The diagram shows conductive elements such as fins 28 that physically connect the heat source to the inner surface 26 of the base 22. This advantageously reduces the amount of material used and simplifies the manufacturing process of the base 22.

[0106] Furthermore, compared to a conductive heater, the IR heat source 42 is able to apply high-power radiant energy (e.g., 500 watts (W)) to the curved inner surface 26 of the base 22 within a few seconds (e.g., 1 to 2 seconds), thereby providing improved heating time for the base 22.

[0107] It should be understood that the use of an IR heat source 42 is also superior to a conductive heater, because a curved conductive heater would be required to heat the curved inner surface 26 of the base 22 using a conductive heater. However, such curved heaters tend to have a high thermal mass, meaning they heat and cool slowly. In contrast, the thermal mass of the IR heat source 42 can be kept to a minimum, provided they have a high emissivity surface, where emissivity is a measure of the effectiveness of a material surface in emitting energy as thermal radiation.

[0108] However, as Figure 3 As shown, while the heating of the curved inner surface 26 is improved as described above by using a single IR heat source 42 concentrically located in the base 22, it may be uneven along the length of the base (shown by the gradient shading of the inner surface 26 of the base 22). Specifically, the length of the actively heated portion of a typical IR bulb 42 is usually shorter than the corresponding length of the base 22 being heated. This means that the central section 26a of the base 22 becomes hotter than the end section 26b of the base 22. This can again cause problems when using the base 22 to style hair and may result in uneven styling results. Furthermore, the uneven distribution of heat along the length of the base 22 may be exacerbated by the connection of the base 22 to the handle portion 12 and the end of the styling device 10, which will be cooler than the base. In particular, if the handle portion 12 and / or the end of the hair styling device are made of a material that facilitates heat conduction, heat from the base 22 can dissipate through these portions of the hair styling device 10, resulting in heat loss from the base 22. However, this uneven heating problem can be solved in several different ways, as described below.

[0109] For example, such as Figure 4As shown, multiple IR heat sources 42a to 42c can be arranged concentrically within the base 22 and sequentially distributed along the length of the base 22. The multiple IR heat sources 42a to 42c are fixed in place by a corresponding set of fixing devices 44a to 44b, 44c to 44d, 44e to 44f, which ensure that the IR heat sources 42a to 42c remain concentrically located within the base 22. The fixing devices 44a to 44b, 44c to 44d, 44e to 44f can be any suitable type of ridge structure that rigidly fixes the IR bulbs in place. Alternatively, the fixing devices 44a to 44b, 44c to 44d, 44e to 44f can be spring-loaded fixing devices that allow lateral movement of the IR bulbs 42a to 42c within the base 22. Regardless of the fixing devices used, the fixing devices are also configured to allow electrical connection of the IR heat sources 42a to 42c to a power source.

[0110] Each of the multiple heat sources, IR heat sources 42a to 42c, can be configured to be controlled independently of each other, wherein a corresponding temperature / thermal sensor (not shown) is disposed along the base 22 adjacent to the corresponding IR heat source 42a, 42b, 42c. For example, a temperature sensor (not shown) can be disposed along the length of the base 22, and the temperature sensor is operable to sense the temperature of the base 22 opposite to each of the IR heat sources 42a to 42c. In the example of the IR heat sources, the temperature sensor can be an infrared temperature sensor. However, it should be understood that other types of sensors are possible. For example, the sensor can be a negative temperature coefficient (NTC) sensor (not shown). However, it should be understood that any other suitable type of temperature sensor can be used.

[0111] It should be understood that if temperature sensors are exposed to significant amounts of IR radiation and / or IR radiation within line of sight of the IR heater, some temperature sensors may be damaged and / or may fail to provide accurate readings. Therefore, it may be necessary to configure such temperature sensors with IR shielding. For example, the temperature sensor can be shielded (and / or enclosed) by a material with low emissivity or a highly reflective material capable of reflecting IR radiation away from the temperature sensor.

[0112] The electrical energy supplied to one or more of the plurality of IR heat sources 42a to 42c can be controlled by a controller (e.g., a microcontroller) based on temperature readings from one or more temperature sensors positioned along the length of the base 22 to regulate the temperature of the base 22. Advantageously, the plurality of temperature sensors can be disposed in the head 16 to detect uneven temperature drops occurring on the base 22 when the head 16 is unevenly loaded with wet or damp hair, and the controller then uses this information to change the electrical energy supplied to each IR heat source 42 so that the hair-loaded portions of the base 22 are heated more than the hairless portions.

[0113] Alternatively or additionally, each of the multiple heat sources IR heat sources 42a, 42b, 42c can be configured as a unit that is controllable, such that the electrical energy supplied to the multiple IR heat sources is uniformly increased / decreased by the controller based on temperature readings from temperature sensors located along the length of the base 22 to regulate the temperature of the base 22.

[0114] For example, when the hair styling device is initially turned on, it is beneficial to control multiple IR heat sources 42a to 42c as a unit to uniformly increase the electrical energy supplied to the multiple IR heat sources, thereby providing uniform heating of the base 22. Furthermore, when the hair styling device is turned on but not in use, the IR heat sources 42a to 42c can be uniformly controlled to maintain the temperature of the base 22. During the shutdown period of the hair styling device, it is beneficial to control multiple IR heat sources 42a to 42c as a unit to uniformly reduce the electrical energy supplied to the multiple IR heat sources.

[0115] Figure 5 It shows Figure 1a A cross-sectional view of the alternative base 22 of the modular modeling device. (See figure) Figure 5 As shown, by way of example only, a single IR bulb 42 can be concentrically arranged within the base 22. The IR bulb is secured in the base by a set of fixing devices 44a, 44b and is shown as having a filament 49 comprising multiple windings. The windings of the filament 49 are shown to have a greater winding density (i.e., a greater number of windings) at the ends of the IR bulb 42 than at the center of the IR bulb 42. By arranging the IR bulb 42 in this way, more heat will be provided in the end section 26b of the base 22 than before, contributing to more uniform heating of the base 22 along its length.

[0116] Advantageously, by arranging the IR bulb 42 as described above, the heat distribution along the length of the base 22 can be passively (rather than actively) controlled. That is, it is not necessary for each of the multiple bulbs along the length of the base 22 to be controlled independently to ensure uniform heating along the length of the base 22.

[0117] Figure 6a shows Figure 1a Another cross-sectional view of the base 22 of the combined molding device. As shown in FIG6a, a single IR heat source 42 (or multiple IR heat sources 42, not shown) with a filament uniformly wound along the length of the base 22 can be provided, wherein the inner surface 26 of the base is adapted / configured to increase the uniformity of heating from the IR heat source 42.

[0118] For example, at least one inner surface 26a, 26b of the base 22 may be selectively anodized or coated with an anodized layer or coating layer 62a, 62b (in Figure 6a, both inner surfaces are shown as anodized; however, it should be understood that this is merely exemplary, and in other cases only one inner surface may be anodized). Anodizing is an electrolytic passivation process used to create and / or increase the thickness of a natural oxide layer on a metal (e.g., aluminum) surface, i.e., on the surface of the base 22. By providing a natural oxide layer on selected portions of the surface of the base 22, the ability of that portion of the base 22 to absorb IR heat is increased compared to portions of the base 22 that are not so coated / anodized. Therefore, the natural non-uniform distribution of heating of the IR bulb 42 (see above) is improved. Figure 3 The description of the base 22 can be compensated for by selectively anodizing the base 22. In particular, by anodizing the end section 26b of the base 22 and not anodizing the central section 26a of the base 22 (as shown by different dots in Figure 6b), more uniform heating of the base 22 can be achieved.

[0119] Therefore, although the central section 26a will typically be heated to a higher temperature than the end section 26b of the base 22, the end section 26b of the base 22 will absorb more IR heat from the IR heat source 42 than the end section without the anodic oxide layer due to the location of the IR heat source 28 and the higher IR absorption rate of the end section 26b of the base 22 compared to the central section 26a. This contributes to achieving more uniform heating of the base 22 along its length.

[0120] Selective anodizing of the curved surface of the base 22 can be achieved by any suitable anodizing process known to those skilled in the art. By way of example only, anodizing can be performed by immersing each corresponding end of the base 22 in an anodizing bath while leaving the central section 26a un-anodized in the anodizing solution, thereby forming two consecutive anodized sections on the surface of the base 22, separated by the un-anodized central section 26a.

[0121] Alternatively, anodizing can be performed using a mask pattern. For example, a patterned mask can be applied to the inside of the base of the inner surface of the base 22. The mask pattern can be configured to cover / protect the central segment 26a of the inner surface while exposing all other segments of the inner surface. Once the mask is applied, the base 22 can be placed in an anodizing bath to anodize those segments of the inner surface of the base 22 that are not covered / protected by the mask. Once the anodizing process is complete, the mask can be peeled off from the inner surface, leaving the unanodized central segment 26a of the inner surface, with anodized segments on both sides.

[0122] Advantageously, by using the masking process described above, the mask pattern can be configured such that the level of anodizing gradually changes from the unanodized central section 26a to the end sections 26b. For example, the mask pattern can be configured such that the ends of the inner surfaces on both sides of the central section 26a are increasingly anodized according to their distance from the central section 26a. Advantageously, using a mask thus allows for finer control of the anodizing of the inner surface of the base 22, which in turn ensures a more uniform temperature along the length of the base 22.

[0123] Figure 6b shows an enlarged portion of the base 22 shown in Figure 6a. As shown in Figure 6b, by way of example only, during the selective anodizing process of the inner surface 26a of the base 22, an anodized layer or coating 62a is formed or deposited on the inner surface 26a. As shown in Figure 6b, the anodizing or coating 62a can be a patterned layer such that the level of anodizing gradually changes from the central segment 26a of the inner surface 26a to the end segment 26b of the inner surface 26a.

[0124] Additionally, to help ensure that there is no significant temperature difference between the end section 26b and the central section 26a of the base 22, it is advantageous to thermally insulate the base 22 from the handle 12 and the end of the hair styling device, so that heat is not lost through the handle 12 or the end. Those skilled in the art will understand that such thermal insulation can be achieved by any suitable thermal insulation device. For example, a heat-insulating layer / material (e.g., fiberglass, aerogel, etc.) can be provided at each end of the base 22 to insulate it from the handle 12 or the end.

[0125] Base material

[0126] All the examples above describe a concentric arrangement of one or more IR heat sources 42 along the length of the base 22. This described arrangement advantageously provides uniform heating / temperature along the length of the base 22. This heating can then be used, for example, to style and / or dry a user's hair by passing the head 16 of the styling device through the hair.

[0127] Furthermore, since heating of the base 22 is provided by one or more IR heat sources 42 in the above example, the materials that can be used to manufacture the base 22 can differ from those typically used in conventional molding equipment previously available on the market. The ability of IR to heat any surface within the line of sight of an IR heat source means that some materials that are otherwise difficult to heat can be used.

[0128] For example, when the IR heat source 42 is used as a heat source, the base 22 can be made of a porous medium, such as sintered bronze, Duocel®, aluminum foam, or Alupor. TMEtc. It should be understood that the porous materials mentioned herein are merely exemplary, and any suitable porous material can be used for base 22. This porous material advantageously possesses capillary action capabilities, so that water from the user's hair, which is wetted, can be drawn into the surface of the porous material via capillary action and then evaporated by the heat experienced by the porous material from the IR bulb 42. This further improves the drying speed of the user's hair. Furthermore, this porous material can also be treated to prevent hair from tangling on the material. For example, the porous material can be treated with a low-friction coating. Alternatively or additionally, the porous material can also be sanded during manufacturing to smooth the rough edges on the surface of the porous material.

[0129] Additionally, the pore size of such porous materials can be selected to provide the required airflow back pressure, thereby ensuring a more uniform diffused airflow along the length of the porous material, regardless of whether the user's hair is present on the surface of the base 22.

[0130] IR heating in use

[0131] It should be understood that the arrangement of the aforementioned IR heat source 42 provides uniform heating / temperature along the length of the base 22 under independent operating conditions (i.e., when no load is applied to the base). However, during use of the styling device 10, applying a load (e.g., hair) to one side of the base 22 of the styling device 10 may cause that side to cool while the other side of the base remains at a high temperature.

[0132] like Figure 7a As shown, during use, the user may repeatedly use only one side of the head 16 of the styling device (therefore one side of the base 22) to styling the device. Figure 7a The hair is dried and / or styled on the side marked "used side" (in the center). This reuse of only one side of the head 16 means that the load across the head 16 (and thus the base 22) is uneven, and therefore the reused side of the base 22 will be more uniform than the unused side (in the center). Figure 7a (Shown in shaded area) Cools considerably. Even with continuous IR heating, one side of the reusable base 22 will cool down, while the other sides (one or more) of the base 22 will remain at a constant temperature. This is because the concentrically positioned IR bulbs 42, as described above, result in heat being applied to the base 22 in a uniform manner, without taking into account the fact that more heat is dissipated from one side of the base 22 than from the other due to the specific way the end user uses the device.

[0133] like Figure 7b and Figure 7c As shown, two or more IR heat sources 42a to 42d can be provided, these IR heat sources are positioned adjacent to each other and eccentrically arranged within the base 22. Figure 7bIn the middle, two IR heat sources 42a and 42b are arranged adjacent to each other along the minor axis of the elliptical cross-section of the base 22, while... Figure 7c In the base 22, four IR heat sources 42a, 42b, 42c, and 42d are arranged adjacent to each other, with two IR heat sources arranged along the minor axis of the elliptical cross-section of the base 22 and two IR heat sources arranged along the major axis of the elliptical cross-section of the base 22. It should be understood that other possible numbers and arrangements of the IR heat sources 42 in the base 22 are possible, and... Figure 7b and Figure 7c This is given as an example only.

[0134] exist Figure 7b and Figure 7c Of the two, the IR heat sources 42 are separated from each other by a thermal shield 94, such that each IR heat source 42 heats one side / section of the base 22. Each of the IR heat sources 42 can be independently controlled by a controller (e.g., a microcontroller) based on the sensed temperature of the side / section of the base 22 heated by the IR heat source 42 to achieve a uniform temperature of the base 22, regardless of which side of the device 10 is being actively used by the user.

[0135] For example, such as Figure 7b As shown, in response to using only one side of the styling device 10 to comb hair, that side of the base 22 will dissipate heat faster than any other side of the base 22. To prevent uneven temperature distribution around the curved surface of the base 22, the IR heat source 42a can be controlled independently of the IR source 42b (e.g., the IR heat source 42a can be turned on, or a greater amount of electrical energy can be supplied to it than to the IR heat source 42b) to heat that side of the base 22 during use and compensate for any heat loss that may occur on that side due to the user applying hair to it. This, in turn, ensures a uniform temperature of the base 22 and thus improves the user experience.

[0136] Similarly, for example, such as Figure 7c As shown, to prevent uneven temperatures around the curved surface of the base 22, the IR heat source 42a can be controlled independently of the IR sources 42b, 42c, and 42d (e.g., the IR heat source 42a can be turned on, or a greater amount of electrical energy can be supplied to it than to other IR heat sources) to heat the side of the base 22 during use and compensate for any heat loss that may occur on that side of the base 22 due to the user applying their hair to it. This, in turn, ensures a uniform temperature of the base 22 and thus improves the user experience.

[0137] Furthermore, to aid in controlling the IR heat source 42, temperature sensors 92a and 92b, such as those described previously, can be positioned around the base 22 to detect temperature variations in different sections of the base 22 during use of the hair styling device. Based on the detected temperature variations, a controller (to which the sensors are attached) can control one or more of the IR heat sources 42a and 42b as previously described to ensure temperature uniformity of the base 22.

[0138] It should be understood that, Figure 7b and Figure 7c The number and arrangement of the IR heat source 42 and temperature sensor 92 shown are merely examples, and other possible arrangements are also possible.

[0139] Based on the above references Figure 3 As described in Figure 7, it should be understood that the IR heat source 42 can be any suitable IR heat source 42. By way of example only, the IR heat source 42 can be an IR bulb. An IR bulb (also called an IR lamp) can take the form, for example, an incandescent bulb that emits IR radiation or a solid-state light-emitting diode (which typically produces near-monochromatic infrared light). In the case of an incandescent IR bulb, a filament (typically a tungsten filament) can be arranged within a glass bulb, which produces IR radiation when heated to a high temperature. Such a filament typically comprises a different number of windings, and these different numbers of windings can also be concentrated at different locations along the length of the filament. Such an IR bulb will now be described in more detail.

[0140] IR bulbs

[0141] IR bulb materials

[0142] In the above description, it should be understood that any suitable IR heat source (one or more) 42 can be used. However, the following sections pertain to scenarios where the IR heat source (one or more) is specifically an IR bulb.

[0143] As already described, the incandescent IR bulb 42 typically consists of a metal filament (e.g., a tungsten filament) that heats up and emits IR radiation when an electric current passes through it. The filament is usually encased in glass. The bulb also includes electrical connections to connect the filament to a power source. Quartz glass is typically used, but other possible glass forms are not excluded.

[0144] IR bulbs using quartz glass are generally fragile and can easily break under stress. For example, if a user accidentally drops the hair styling device 10, the force of the impact could cause damage to, for example, any end caps of the IR bulb, the glass encasing the filament of the IR bulb, and / or the filament of the IR bulb itself.

[0145] The potential breakage of any component that makes up an IR bulb can pose health and safety problems for the user. For example, a broken glass could result in many small glass shards that could come into contact with the user and potentially cause cuts. Furthermore, even when the glass breaks, the bulb filament may remain electrically connected, which could be dangerous if the user were to come into contact with it (the filament could be very hot if the molding equipment has been used recently).

[0146] To mitigate the risk of breakage from IR bulbs, they can be specially manufactured to increase the durability of the glass and filament used, thereby improving their ability to withstand drops from hair styling devices. For example, the glass used could be a glass-ceramic composite material (e.g., Schott). TM Glass-ceramic composites are polycrystalline materials produced through the controlled crystallization of a base glass, resulting in a fine and uniform dispersion of crystals throughout the bulk material. These composites typically possess high strength and toughness. They can also exhibit other beneficial properties for IR bulbs, such as low thermal expansion and high-temperature stability. It should be understood that the use of glass-ceramic composites instead of quartz glass is given only as an example, and any suitable material with high strength and toughness, as well as good emissivity, can be used.

[0147] To prevent breakage of the filament in an IR bulb, the filament can be configured to have high strength and toughness. Typically, the filament in an IR bulb is a short-wavelength tungsten filament. These types of filaments typically emit IR radiation in the wavelength range of 750 nm to 1.4 μm and are capable of providing very high power densities (e.g., 500 W) in small spaces such as the interior of the base 22 described above. These types of filaments can also have very fast heating times and responsiveness, which advantageously allows for precise control and regulation of the temperature of the base 22. However, short-wavelength tungsten filaments are brittle and therefore prone to breakage if dropped by a hair styling device. Therefore, other filaments can be used to address these issues.

[0148] For example, as an alternative to short-wave tungsten filaments, IR bulbs can be designed with fast-response mid-wave tungsten (FRMW) filaments. FRMW filaments have a unique helical winding designed to allow more energy distribution in the mid-wavelength range (e.g., between 1.4 μm and 3 μm). The helical winding in such a filament can provide a lower power density than that of a short-wave tungsten filament in a small space, such as the interior of the base 22 described above. Furthermore, FRMW filaments have a much slower heating time and response compared to short-wave tungsten filaments. However, advantageously, due to the star shape of the filament, it has significantly greater durability than a short-wave tungsten filament, and therefore its ability to withstand drops from hair styling devices is significantly improved.

[0149] Alternatively, as an alternative to short-wave tungsten filaments, IR bulbs can be designed with carbon fiber filaments. IR bulbs made with carbon fiber filaments can provide a lower power density than those with short-wave tungsten filaments in small spaces, such as the interior of the base 22 described above. Due to the low specific heat capacity of carbon fiber filaments, they have heating times and responsiveness that are quite similar to those of short-wave tungsten filaments. Advantageously, due to the material properties and weave of carbon fiber filaments, they have much greater durability than short-wave tungsten filaments, and therefore their ability to withstand drops from hair styling devices is significantly improved.

[0150] It should be understood that the selection of filaments in IR bulbs for hair styling equipment is a trade-off between the durability requirements of the filaments and the power levels and heating response times required to ensure the proper and efficient operation of the hair styling equipment.

[0151] As can be seen from the above description, short-wave tungsten filaments are the best filaments for ensuring the normal and efficient operation of hair styling equipment. However, the lack of durability of short-wave tungsten filaments means that they are prone to breakage when the equipment is dropped. Therefore, it may be advantageous to provide a support system within the base 22, which supports the IR bulb and absorbs / compensates for any impact that may occur when the hair styling equipment is dropped.

[0152] IR bulb suspension system

[0153] Alternatively, the filament of the IR bulb may be selected to prevent (or at least reduce) the possibility of filament breakage in the IR bulb, thereby improving the lifespan of the IR bulb. The IR bulb may be fixed in the base 22 of the molding device 10 using a suspension system as described below.

[0154] Figure 8a This is a cross-sectional view of an optional base 22, which has a spring suspension system 82 for supporting an IR heat source (e.g., an IR bulb) 42 within the base 22. The spring suspension system can reduce the effects of forces experienced by the IR bulb 42 in the molding device 10. Figure 8a As shown, the spring suspension system 82 can be a multi-spring suspension system having multiple springs 84, which are oriented and positioned differently relative to the IR bulb 42 and the base 22. This is merely an example. Figure 8a As shown, the IR bulb 42 within the base 22 can be supported within the base 22 between two springs 84a and 84b. These springs are connected at one end to bulb holders 86a, 86b (which in turn hold the neck of the IR bulb 42) and at the other end to corresponding feet 90a, 90b located on the inner surface of the base 22. In the event of an impact to the base 22 (such as when the hair styling device 10 is dropped), the springs 84a and 84b allow lateral movement of the IR bulb 42. Figure 8aIn the example, the IR bulb 42 is concentrically held within the base 22 by the bulb holder 86 and the spring 84. However, it should be understood that when multiple IR bulbs are provided as described above, the IR bulbs may not be concentrically fixed within the base 22. In this case, springs of different lengths will be provided to hold the IR bulbs in the correct position within the base.

[0155] Figure 8b yes Figure 8a The longitudinal cross-sectional view of the base shown illustrates the spring suspension system 82, which is used to support... Figure 1a The IR heat source 42 is located in the base 22 of the combined hair drying / styling device 10 shown. Figure 8b As shown, the IR bulb 42 is supported within the base 22 by two pairs of springs 84a, 84b and 84c, 84d, which support opposite ends of the IR bulb 42 within the base 22. The four springs 84 can provide a spring stiffness (a measure of spring rigidity) between 5 N / mm and 25 N / mm. Spring stiffness is also referred to as the spring constant. It should be understood that the spring stiffness of the springs 84 used in the spring suspension system will vary and depends on the number of springs used in the system. In cases where many springs can compensate for the impact forces acting on the IR bulb, the spring stiffness of the springs used may be less than, for example, if only two springs are used.

[0156] The exemplary spring suspension system described above includes four springs arranged to compensate for the impact of forces on the IR bulb 42. However, it should be understood that... Figure 8a and Figure 8b By way of example only, and any number of springs 84 can be provided depending on, for example, the number of IR bulbs used and the position and orientation of these IR bulbs within the base 22. For example, the spring suspension system may include two, three, four or more springs as needed to help compensate for the impact of forces exerted by the IR bulb(s) in the base 22.

[0157] It should also be understood that the described spring suspension system is only one possible mechanism for reducing the impact of forces on the IR bulb in the styling device 10. For example, alternatively or additionally, a crease feature can be provided to reduce the impact of forces on the IR bulb. The crease feature can be any type of structural feature that increases the time for a change in velocity (and therefore momentum) in the material in response to an impact (e.g., the impact with the floor when the hair styling device is dropped). In other words, the crease is designed to absorb the impact energy experienced during the impact, such that most of the energy is dissipated in the crease. Therefore, a crease feature can be provided in the styling device 10 such that when the hair styling device is dropped, the energy transmitted to the device during an impact with, for example, the floor is dissipated in the crease feature rather than in the base 22 and therefore not in the IR bulb therein.

[0158] Alternatively, a damper may be provided in the handle 12 of the hair styling device to absorb some of the impact force when the device is dropped.

[0159] IR bulb safety

[0160] The improvements to the styling device 10 described above include (but are not limited to) using an IR heat source 42 to improve the heat distribution at the base 22 of the styling device 10. However, incorporating such an IR heat source 42 into the styling device 10 may require consideration of user safety and adaptive modifications.

[0161] In the case of heating the base 22 through radiation generated by the IR bulb 42, it should be understood that consideration needs to be given to protecting the user, especially their eyes. One of the most common eye diseases associated with near-infrared radiation is cataracts, and prolonged exposure to IR radiation can cause gradual and irreversible clouding of the lens of the eye. Other forms of damage to the eye from IR exposure include scotomas, which are vision loss caused by retinal damage. Even low levels of IR absorption can cause symptoms such as redness, swelling, or bleeding of the eyes. Therefore, it is important to ensure that the IR radiation from any IR bulbs incorporated into the base 22 of the modeling device 10 is not arranged such that it is within the user's line of sight when using the modeling device 10.

[0162] The base 22 of the hair styling device has a vent 40 (such as...). Figure 1a As shown, to allow air to flow in and out of the base 22, the vents 40a to 40d may be provided with openings through which IR radiation from the IR source can pass. Furthermore, if the molding device 10 has a plurality of bristles 20 and these bristles protrude through openings in the base 22, IR radiation from the IR source can also pass through those openings for the bristles 20.

[0163] Figure 9 It shows Figure 1a A cross-sectional view of the alternative base 22 of the modeling device 10, which has an arrangement to prevent obstruction within the line of sight of the IR bulb 42. (See image below.) Figure 9 As shown, a plurality of internal air channels 920a to 920d are provided, each formed by one or more walls that surround an internal region of the base 22 and separate that region from the IR heat source 42. By way of example only, each of the internal air channels 920a to 920d may be formed by a first wall and a second wall. The first wall of the internal air channel 920 may be adjacent to the IR heat source 42 and may be made of a material that reflects incident IR radiation. Alternatively or additionally, the first wall may be made of a highly polished material to reflect incident IR radiation from the IR heat source 42. The second walls 926a to 926d of the internal air channels 920 may be made of a material that allows air to pass through the air channels toward vents 40 formed in the base 22. For example, the second walls 926a to 926d of the internal air channels 920a to 920d may be made of a perforated material through which air can pass. Upon passing through the second wall 926, air may subsequently exit the base 22 through the vents 20 formed in the base 22. It should be understood that although the internal air passage 920 described above has a first wall and a second wall, the passage 920 may also be formed by a single wall, wherein the side of the wall near the IR heat source 42 includes a material that reflects IR radiation.

[0164] Advantageously, by providing the internal air passage 920 as described above, air can flow along and through the surface of the base 22, while preventing IR radiation from the IR heat source 42 from escaping through the vent 40 formed in the base 22. This, in turn, advantageously prevents IR radiation from being within the end user's line of sight.

[0165] Additionally, to prevent IR radiation from passing through the openings in the base 22 through which the multiple bristles 20 protrude, each bristle 20 may be configured / manufactured to have a collar feature 935 at the base of each bristle (i.e., the bristle end that remains within the base 22 when the bristle protrudes from the base 22). This collar feature 935 may be configured to provide a barrier between the opening through which the bristle 20 protrudes and the IR heat source 45. For example, the collar feature 935 may be larger than (e.g., wider than) the opening in the base 22 through which the bristle protrudes, thereby blocking IR radiation from the IR heat source 42 from passing through the opening. Furthermore, the collar feature 935 may be made of a material that reflects incident IR radiation from the material to further prevent IR radiation from escaping from the interior of the base 22. Alternatively or additionally, the collar feature 935 may be made of a highly polished material to reflect incident IR radiation from the IR heat source.

[0166] Alternatively or additionally, the line-of-sight path of IR radiation from the IR heater source can be blocked by patterning the housing of the IR heat source 45. By way of example only, if the IR heat source is an IR bulb, the glass housing of the IR bulb can be patterned to block the line-of-sight path of IR radiation from the IR heater source. For example, the glass housing of the IR bulb can be patterned with a material that reflects IR radiation. The material pattern on the glass housing will be selected such that the material reflecting IR radiation is located on the surface of the glass housing at positions corresponding to the locations of the vent holes 40 and / or the openings in the base 22 through which the bristles extend, thereby blocking IR radiation through the glass housing at these locations. This, in turn, will prevent IR radiation from passing through the glass housing and exiting from the openings in the base 22 through which the bristles extend.

[0167] The material used to create patterns on the glass housing of an IR bulb can be deposited on the glass using any suitable material deposition process. As an example only, known physical vapor deposition (PVD) processes can be used to deposit the material. Possible deposition techniques could include spin coating, electroplating, spraying, and vacuum deposition processes. When depositing material on the glass housing, a mask is first applied to the glass housing to mark the locations where the material will be deposited. Once the material has been deposited, the mask can be removed, leaving the deposited material with the desired pattern on the glass housing.

[0168] It should be understood that the above-described device for blocking the line of sight of IR radiation is provided only as an example, and other suitable devices may be used to block IR radiation from reaching the human eye or other parts of the body along the line of sight.

[0169] bristle configuration

[0170] As previously described, the bristles 20 of the styling device 10 are configured to guide the hair as it passes the head 16 (and thus the base 22), allowing the user to better control the styling of the hair.

[0171] Typically, the bristles 20a to 20g are made of insulating material, such as plastic with low thermal conductivity. Sometimes, multiple heat-conducting surface elements are provided, extending from the outer surface of the base 22, to increase the outer surface area of ​​the head 16 for heating the user's hair. However, it should be understood that the arrangement of these surface elements increases the complexity of manufacturing the hair styling device. Therefore, it may be advantageous to provide heat-conducting bristles 20 as an alternative. Such heat-conducting bristles 20 can serve as both bristles and heat-conducting elements, thereby maximizing the heat applied to the user's hair during use of the styling device 10 while reducing the number of parts used in the device.

[0172] Thermally conductive bristles—heating and safety

[0173] Figure 10An array of thermally conductive bristles is shown, which can be attached to, formed on, or integrated with the base 22 of the molding device 10. For example, bristles 20a to 20g can be formed on a metal substrate, which is in turn attached to the base 22. Alternatively, if the thermally conductive bristles 20 are configured to be retractable, they can be formed on a guide rail (not shown), which is in turn attached to or formed on the base 22 of the molding device 10. It should be understood that when the thermally conductive bristles 20a to 20g are formed on a guide rail, the guide rail will be made of a thermally conductive material to facilitate heat conduction from the base 22 to the guide rail (not shown).

[0174] Each bristle 20 can be made of a thermally conductive material (e.g., metal) capable of absorbing heat from a base that is in turn heated by an IR heat source 42. For example, when the bristles are attached to, formed on, or integral with the base 22 of the shaping device 10, the bristles 20 can be heated by heat conduction from the base 22, which in turn is heated by IR radiation from the IR heat source 42. Alternatively, when the bristles 20 are retractable and thus formed on a guide rail as described above, the bristles 20 can be heated by heat conduction from the base 22 via the guide rail, which in turn is heated by heat conduction from the base 22. Advantageously, such heated bristles 20 improve the drying or shaping operation of the shaping device 10.

[0175] However, it should be understood that the above-described mechanism for heating the bristles 20 is merely an example, and other suitable devices for heating the bristles 20 can be used. The described mechanism requires the bristles 20 to be thermally connected to the base 22 so that heat can be conducted between them. However, the bristles 20 can be thermally separated / isolated from the base 22. In this case, separate heating strips can be provided to heat the bristles. For example, conductive strips can be provided, configured to generate heat when current flows through them. These conductive strips can be mounted to make thermal contact with the bristles to heat the bristles 20.

[0176] Alternatively, the bristles 20 can be heated using an induction heating mechanism. For example, heating coils can be arranged around and / or inside the rows of bristles 20 on the shaping device 10. When current flows through the heating coils, the coils are heated via induction heating. This heat then heats the bristles 20 through thermal conduction from the coils. In the case of multiple coils, it should be understood that it is advantageous for these coils to be connected in series to minimize the complexity of the required circuitry. Alternatively, these coils can be wired separately so that each coil can be controlled independently. Advantageously, individual control of the coils allows for higher precision in temperature control and sensing processes using temperature measurements.

[0177] However, regardless of the method of heating the bristles, some considerations are needed if the bristles 20 are formed of a thermally conductive material. For example, the bristles 20 may become dangerously hot and could cause burns to the user's hair and / or scalp. Therefore, an outer covering layer can be provided to cover each bristle to reduce (but not prevent) the heat reaching the user's hair / head during use. For example, a plastic outer covering layer can be provided to limit the heat that can radiate from the bristles 20 to the user's hair. The insulating outer covering layer can, for example, include a material with low emissivity. That is, the material should be translucent to IR radiation or reflective to IR radiation in order to reduce or prevent the risk of the user coming into contact with the hot ends of the bristles 20. Additionally, insulating ends 1010a to 1010g can be provided at the ends of each of the bristles 20a to 20g to prevent the hottest part of each bristle from coming into contact with the user's head during use. By way of example only, materials that can be used for such an insulating outer covering layer may include silicon, glass, and polytetrafluoroethylene (PTFE). However, it should be understood that any material with an appropriate emissivity level can be used to prevent or reduce the possibility of the user being burned by the ends of the thermally conductive bristles 20.

[0178] Thermally conductive bristles - stretchable

[0179] Typically, materials with high thermal conductivity (such as the thermally conductive bristles 20 described above) are rigid and inflexible. However, this rigidity and inflexibility can cause problems if the bristles 20 are designed to be retractable (e.g., capable of retracting into the head 16 by mechanical movement, by using the device 10, or by the electronic controller of the device 10). Therefore, a new mechanism is needed that allows for the retractability of the thermally conductive bristles.

[0180] Rotation

[0181] Figure 11a A partial cross-sectional perspective view of the base 22 with a first retractable bristle mechanism (referred to as the "rotation" mechanism) is shown, which can be used in conjunction with thermally conductive bristles 20. Figure 11a In the middle, the hot brush bristles extend through the base 22.

[0182] Figure 11b Another partial cross-sectional perspective view of the base 22 with a “rotation” mechanism is shown, in which the thermal bristles are retracted below the top surface 1115 of the base 22.

[0183] like Figure 11aAs shown, a plurality of guide rails 1110 can be provided on the inner surface 1105 of the base 22, and these guide rails are arranged circumferentially around the outer surface 1105. Each of these guide rails 1110 can extend along the length of the base 22 and can support a row of bristles along the said length of the base 22. For example, six guide rails can be provided around the base 22, each guide rail supporting 12 bristles, so that a total of 72 bristles are provided on the device 10. It should be understood that other numbers of guide rails and bristles can be provided as appropriate. For example, as Figure 11a As shown, three guide rails 1110a to 1110c are present around the base 22, each guide rail 1110 supporting 26 bristles. For clarity, Figure 11a Not all features are labeled; for example, not all bristles are labeled, but only one bristle in each of the guide rails shown is labeled.

[0184] The guide rail 1110 can then be secured to the base 22 at both ends using any suitable fixing device. It should be understood that such fixing device still allows rotation of the guide rail. The end of the guide rail 1110 near the handle portion 16 of the molding device 10 can also be connected to the handle portion 16 of the molding device 10 to allow rotation of both the handle portion and the guide rail 1110. For example, rotation of the handle portion 16 can actuate rotation of the guide rail 1110 on the outer surface of the base 22.

[0185] The top surface 1115 of the base 22 is located above the guide rail 1110 and the bristles, and has a plurality of openings 11120 corresponding to the bristles 20. When in the retracted state, the bristles 20 retract from the openings 1120 of the base 20 and are oriented at an acute angle relative to the inner surface 1105 of the base 22. When in the extended state, the bristles 20 extend from the openings 1120 of the base 20 and are oriented perpendicular to the top surface 1105 of the base 20.

[0186] The bristles 20 can have a length of up to 10 mm when extended, and preferably, the bristles 20 can have a length of up to 8.8 mm when extended. However, it should be understood that the length of the bristles 20 can be any suitable length, which means that the bristles 20: a) are fully extended to allow the bristles to guide the hair as the hair passes over the head 16, and b) can be fully or at least partially retracted below the top surface of the base 22.

[0187] In use, starting from the retracted state, the handle portion 16 and therefore the guide rail 1110 can rotate clockwise (or counterclockwise depending on the design) to rotate a plurality of guide rails arranged around the base 22. The rotation of the multiple guide rails causes the bristles 20 attached to those guide rails to rotate. The guide rails 1110 and the bristles 20 rotate until the bristles 20 extend through the opening 1120 in the top surface 1115 of the base 22. For example, the bristles 20 can be spring-loaded and can "pop" out of the opening once the tip of the bristle encounters it. Alternatively, the bristles 20 can be hinged to the guide rails, and the bristles pivot about the hinge when they contact the opening 1120 in the top surface 1115 of the base 22.

[0188] It should be understood that, during use, the bristles 20 of the styling device 10 are configured to guide the hair as it passes the head 16, therefore a mechanism is needed to prevent the bristles 20 from accidentally retracting while brushing the hair. Therefore, a locking mechanism (not shown) can also be provided to lock the guide rail in place and prevent rotation when the guide rail has been rotated to remove the bristles 20 from the opening 1120 of the top surface 1115 of the base 22. For example, a locking mechanism, such as a "key lock" type mechanism, can be provided in the handle portion 16 of the styling device 10.

[0189] Alternatively, where the bristles are spring-loaded and "pop out" of the opening once the ends of the bristles are aligned with the opening 1120, the bristles can be designed such that considerable force may be required when rotating the handle to retract the bristles below the top surface 1115 of the base 22. It should be understood that the spring-loaded bristles, which secure them once withdrawn, are merely described as an example, and any suitable device can be used to secure (or "lock") the bristles in place once they extend through the top surface 1115 of the base 22.

[0190] To retract the bristles 20, the handle portion 16 can rotate counterclockwise (or clockwise depending on the design) to retract the bristles 20 below the top surface 1115 of the base 22. It should be understood that if the locking mechanism in the handle portion 16 of the shaping device 10 is a "key lock" type mechanism, retracting the bristles 20 requires first releasing the "key lock" mechanism. For example, if a portion of the handle portion 16 engages with a corresponding portion of the base 22 to "lock" the handle portion 16 and the guide rail in place while the handle portion 16 is rotating, the user may first have to push / pull the handle portion 16 or press a button on the handle portion 16 to release the portion of the handle portion 16 that engages with the corresponding portion of the base 22, allowing the handle portion 16 and the guide rail to rotate.

[0191] radial

[0192] For example only, Figure 12aAnother retractable brush mechanism (referred to as the "radial" mechanism) is shown, which can be used in conjunction with the thermally conductive brush 20 in the molding device 10. Figure 12a In the middle, the hot brush bristles extend through the top surface 1115 of the base 22.

[0193] Figure 12b Another cross-sectional view of the base 22 with a "radial" mechanism is shown, in which the thermal bristles are retracted below the top surface 1115 of the base 22.

[0194] like Figure 12a As shown, in the "radially" retractable bristle mechanism, similar to a "rotation" mechanism, a plurality of guide rails 1205a to 1205c arranged circumferentially around the outer surface 1105 of the base 22 can be provided on the outer surface 1105. Each of these guide rails 1205 can extend along the length of the base 22 and can support a row of bristles along the said length of the base 22. For example, six guide rails can be provided around the base 22, each supporting 12 bristles, thus providing a total of 72 bristles on the device 10. It should be understood that other numbers of guide rails and bristles can be appropriately provided. For clarity, Figure 12a Not all features are labeled; for example, not all bristles are labeled, but only one bristle in each of the guide rails shown is labeled.

[0195] The guide rail 1205 can then be secured to the base 22 at both ends using any suitable fixing device. It should be understood that such fixing device still allows rotation of the guide rail. The end of the guide rail 1205 near the handle portion 16 of the molding device 10 can also be connected to the handle portion 16 of the molding device 10 to allow rotation of both the handle portion and the guide rail 1205. For example, rotation of the handle portion 16 can actuate rotation of the guide rail 1205 on the outer surface of the base 22.

[0196] like Figure 12a As shown, unlike the aforementioned mechanism, in the rotating mechanism, the guide rail 1205 can be formed on a curved surface, such that the rotation of the guide rail 1205 causes radial movement of the bristles 20. Therefore, in the radial mechanism, the bristles 20 may not rotate, but rather move up and down with the rotation of the guide rail 1205.

[0197] The top surface 1115 of the base 22 above the guide rail 1205 and the bristles 20 has a plurality of openings 1120 corresponding to the bristles 20. When in the retracted state, the bristles 20 retract from the openings 1120 of the top surface 1115 of the base 22; however, the orientation of the bristles does not change, that is, when retracted, the bristles 20 remain perpendicular to the inner surface 1105 of the base 22. When in the extended state, the bristles 20 extend from the openings of the top surface 1115 of the base 22 and are also oriented perpendicular to the inner surface 1105 of the base 22.

[0198] The bristles 20 may preferably have a length of up to 6.9 mm. However, it should be understood that the length of the bristles 20 can be any suitable length, which means that the bristles 20: a) extend sufficiently to allow the bristles to guide the hair as they pass over the head 16, and b) can be fully or at least partially retracted below the top surface 1115 of the base 22 without becoming close to one or more IR heaters 42 (in other words, if the bristles are fully retractable in this design, the bristles can only be as long as the distance between the base 22 and the IR bulb 42).

[0199] In use, starting from the retracted state, the handle and therefore the guide rail 1205 can rotate clockwise (or counterclockwise depending on the design) to rotate the plurality of guide rails arranged around the base 22. The rotation of the plurality of guide rails in turn actuates the bristles to move upward in a straight line toward the opening 1120 in the top surface 1115 of the base. The guide rail 1205 rotates until the bristles 20 extend completely from the opening 1120 in the top surface 1115 of the base.

[0200] It should be understood that, when in use, the bristles 20 of the styling device 10 are configured to guide the hair as it passes the head 16, therefore a mechanism is needed to prevent the bristles 20 from accidentally retracting while brushing the hair. Therefore, a locking mechanism may be provided, for example, in the handle portion. Any suitable device can be used to secure (or “lock”) the bristles in place once they have extended through the top surface 1115 of the base 22.

[0201] To retract the bristles 20, the handle portion 16 can rotate counterclockwise (or clockwise depending on the design) to retract the bristles 20 below the top surface 1115 of the base 22. It should be understood that if the locking mechanism in the handle portion 16 of the shaping device 10 is a "key lock" type mechanism, retracting the bristles 20 requires first releasing the "key lock" mechanism. For example, if a portion of the handle portion 16 engages with a corresponding portion of the base 22 to "lock" the handle portion 16 and the guide rail in place while the handle portion 16 rotates, the user may first have to push / pull the handle portion 16 or press a button on the handle portion 16 to release the portion of the handle portion 16 that engages with the corresponding portion of the base 22, allowing the handle portion 16 and the guide rail to rotate.

[0202] Axial

[0203] For example only, Figure 13a Another retractable brush mechanism (referred to as the "axial" mechanism) is shown, which can be used in conjunction with the thermally conductive brush 20 in the molding device 10. Figure 13a In the middle, the hot brush bristles extend through the top surface 1115 of the base 22.

[0204] Figure 13bAnother cross-sectional perspective view of the base 22 with an "axial" mechanism is shown, in which the thermal bristles are retracted below the top surface 1115 of the base 22.

[0205] like Figure 13a As shown, in the "axially" retractable bristle mechanism, a plurality of guide rails (not shown) arranged circumferentially around the outer surface (not shown) of the base 22 can be provided. Each of these guide rails can extend along the length of the base 22 and can support a row of bristles along said length of the base 22. For example, six guide rails can be provided around the base 22, each supporting 14 bristles, thus providing a total of 84 bristles on the device 10. It should be understood that other numbers of guide rails and bristles can be provided as appropriate. Each bristle 20 is attached to a guide rail via a spring-loaded hinge that allows the bristle to move at an angle of 90 degrees. For clarity, Figure 13a Not all features are labeled; for example, not all bristles are labeled, but only one bristle in each of the guide rails shown is labeled.

[0206] The guide rail can be secured to both ends of the base 22 using any suitable fixing device. It should be understood that such fixing device still allows axial movement of the guide rail. The end of the guide rail near the handle portion 16 of the molding device 10 can also be connected to the handle portion 16 of the molding device 10 to allow pull / push movement of the handle portion and / or the guide rail. For example, pushing / pulling the handle portion 16 can actuate to push / pull the guide rail on the outer surface of the base 22.

[0207] The top surface 1115 of the base is positioned above the guide rail and bristles, and has a plurality of opening slots 1305 corresponding to the bristles 20. In the retracted state, the bristles 20 retract from the opening slots of the top surface 1115 of the base 22 and are flat relative to the outer surface of the base 22; that is, the bristles fold downwards onto the outer surface of the base. In the extended state, the bristles 20 extend from the opening slots of the cover and are oriented perpendicular to the top surface 1115 of the base 22.

[0208] The bristles 20 can have a length of up to 10 mm when extended, and preferably, the bristles 20 can have a length of up to 8.8 mm when extended. However, it should be understood that the length of the bristles 20 can be any suitable length, which means that the bristles 20: a) are fully extended to allow the bristles to guide the hair as the hair passes over the head 16, and b) can be fully or at least partially retracted under the top surface 1115 of the base 22.

[0209] In use, starting from the retracted state, the handle portion and thus the guide rails are axially pulled to axially pull the multiple guide rails arranged around the base 22. As described above, the axial pulling of the guide rails causes the bristles 20 to align with the opening slot 1305 in the top surface 1115 of the base 22, and "pop out" through the opening slot via the spring action of the loading spring that forms part of the hinge of the bristles.

[0210] It should be understood that, when in use, the bristles 20 of the styling device 10 are configured to guide the hair as it passes the head 16, therefore a mechanism is needed to prevent the bristles 20 from accidentally retracting while brushing the hair. Therefore, a locking mechanism is provided, for example, in the handle portion. Any suitable device can be used to secure (or “lock”) the bristles in place once they have extended through the top surface 1115 of the base 22.

[0211] To retract the bristles 20, the handle portion can be pushed, thereby pushing the guide rail and causing the bristles 20 to retract below the top surface 1115 of the base 22. It should be understood that if the locking mechanism provided in the handle portion 16 of the styling device 10 is a "key lock" type mechanism, retracting the bristles 20 requires first releasing the "key lock" mechanism. For example, when pushing / pulling the handle portion 16 to "lock" the handle portion 16 and the guide rail into place, a portion of the handle portion 16 engages with a corresponding portion of the base 22; the user may first have to press a button on the handle portion 16 to release the portion of the handle portion 16 that engages with the corresponding portion of the base 22, thereby allowing the push / pull of the handle portion 16 and the guide rail.

[0212] Figure 13c A perspective view of the axial mechanism below the top surface 1115 of the base 22 is shown. Figure 13c As shown, a plurality of bristles 20 are provided along the length of the axial mechanism 1320. Each of the plurality of bristles 20 can be attached to the axial mechanism via a hinge that allows each bristle 20 to rotate 90 degrees from a vertical position (e.g., when the bristle 20 extends through the slot 1305 in the top surface 1115 of the base 22 of the molding device 10) to a horizontal position (e.g., when the bristle 20 is retracted and laid flat on the outer surface of the base 22, below the top surface 1115 of the base).

[0213] Each axial mechanism 1320 may also include protrusions 1325 that fill slots 1305 in the top surface 1115 of the base 22 when the bristles 20 are in their retracted position below the top surface 1115 of the base 22. Advantageously, by providing the protrusions 1325, the protrusions fill the slots 1305 when the bristles 20 are retracted, and the top surface 1115 of the base 22 is a smooth, continuous surface when the bristles 20 are retracted. This, in turn, prevents the user's hair from being trapped in the slots 1305 when using the hair styling device 10 when the bristles 20 are retracted.

[0214] Planetary gear type

[0215] For example only, Figure 14a Another retractable brush mechanism (referred to as a "planetary gear mechanism") is shown, which can be used in conjunction with the heat-conducting brush 20 in the molding device 10. Figure 14a In the middle, the hot brush bristles extend through the surface of the cover on the base 22.

[0216] Figure 14b Another cross-sectional perspective view of the base 22 with a "planetary gear" mechanism is shown, in which the thermal bristles 20 are retracted below the surface of the cover above the base 22.

[0217] like Figure 14a As shown, in the "planetary gear type" retractable brush mechanism, multiple panels 1405a to 1405d can be arranged circumferentially around the base 22 (i.e., the base 22 is divided into multiple panels 1405a to 1405d). One or more rows of brush bristles are arranged along the length of one side of each panel 1405. For example, ten panels can be provided, each panel 1405 having 20 brush bristles, resulting in a total of 200 brush bristles on the device 10. It should be understood that other numbers of guide rails and brush bristles can be appropriately provided. Each brush bristle is arranged to extend vertically from the surface of the panel 1405, wherein the brush bristle is attached to or integrally formed with the panel.

[0218] Each of these panels 1405a, 1405b, 1405c, and 1405d is connected to the handle portion 16 of the hair styling device 10 via gears / teeth 1410a, 1410b, 1410c, and 1410d, such that rotation of the handle portion 16 of the hair styling device 10 causes rotation of each panel 1405. This rotation of the panels 1405a to 1405d means that the bristles on each panel 1405 can rotate from an "up" position (the bristle-bearing side of each panel 1405 facing outwards towards the user) to a "down" position (the bristle-bearing side of each panel 1405 facing inwards towards the IR source).

[0219] In use, starting from the extended position, the handle and therefore gears 1410a to 1410d can rotate clockwise (or counterclockwise, depending on the design) to rotate multiple panels. The rotation of each of the multiple panels causes panel 1405 to move across a 180-degree angle, so that the bristles move from the "downward" position to the "upward" position as described above.

[0220] To retract the bristles 20, the handle portion 16 and the gears 1410a to 1410d therefrom can rotate counterclockwise (or clockwise, depending on the design) to rotate the plurality of panels. The rotation of each of the plurality of panels causes the panel 1405 to sweep across a 180-degree angle, so that the bristles move from the “up” position to the “down” position as described above.

[0221] It should be understood that, when in use, the bristles 20 of the styling device 10 are configured to guide the hair as it passes the head 16, therefore any suitable mechanism can be employed to prevent accidental rotation of the bristle panel while brushing the hair. For example, if the locking mechanism in the handle portion 16 of the styling device 10 is a "key lock" type mechanism, retraction of the bristles 20 may require first releasing the "key lock" mechanism. For example, if a portion of the handle portion 16 engages with a corresponding portion of the base 22 to "lock" the handle portion 16 and the guide rail in place while the handle portion 16 is rotating, the user may first have to push / pull the handle portion 16, or press a button on the handle portion 16, to release the portion of the handle portion 16 that engages with the corresponding portion of the base 22, allowing the handle portion 16 and the guide rail to rotate.

[0222] It should be understood that although the above-described retractable brush mechanism is based on the use of thermally conductive bristles 20, this does not preclude the use of the retractable brush mechanism with other types of bristles. For example, all described retractable brush mechanisms will also function when used with non-conductive and / or flexible bristles more conventionally used in such hair styling devices.

[0223] control system

[0224] Figure 15 A block diagram of the power supply / control circuit 1500 for the modeling device 10 is shown. Figure 15 As shown, the control circuit 1500 includes a power supply 21 that can obtain power from a battery. An AC mains power input can be provided to charge the battery via an AC-DC converter (not shown), which can be external to or internal to the device 1. Alternatively, the power supply 21 can obtain power from an AC mains power input.

[0225] As an example only, electrical energy is supplied to the IR heat source 42 to heat the base 22, bristles 20, and thus the user's hair. The electrical energy supplied to the IR heat source 42 is controlled by a controller 28 having a microprocessor 29. The electrical energy supplied to the IR heat source 42 is controlled by a drive circuit 23 (which may include one or more power semiconductor switching devices (tri-terminal bidirectional thyristor switching elements)) that controls the application of AC mains voltage, or DC voltage obtained from AC mains or a battery, to the IR heat source 42 according to instructions from the microprocessor 29. The microprocessor 29 is coupled to a memory 30 (which is typically non-volatile memory) that stores processor control code for executing one or more control methods that control the heating of the IR heat source 42 based on the desired operating temperature of the IR heat source 42 and the sensed temperature of the heater obtained from a temperature measurement circuit 25. The temperature measurement circuit 25 may be a temperature sensor, such as a thermistor or other suitable IR temperature sensor.

[0226] A user interface 11 is also provided, connected to the microprocessor 29, for example to provide one or more user controls and / or output indications, such as visual indications, haptic feedback, or auditory alarms. The outputs can be used to indicate to the user whether they are moving the device 1 too quickly along the hair strand.

[0227] The control circuitry may also include communication circuitry 27 to allow the device to communicate with remote sensors, remote servers, or remote applications (e.g., on a mobile phone). Communication circuitry 27 may use, for example, Bluetooth, Wi-Fi, and / or 3GPP communication protocols to communicate with remote devices.

[0228] Control system functions

[0229] Surge current and IR scintillation control

[0230] Those skilled in the art will understand that power supply to the IR heat source 42 may need to be carefully controlled to prevent such high inrush current during initial heating. The IR heat source 42 (e.g., an IR lamp, IR bulb, etc.) typically has very low resistance in its cold state (e.g., before it is switched on). Once switched on, the IR heat source 42 will typically experience large inrush currents due to its low resistance in the cold state. Furthermore, the IR heat source 42, by its very nature, has some of its spectrum in the visible light wavelength range. Since full-power heating is not always required, the electrical energy supplied to the IR heat source 42 will need to be temporarily interrupted (e.g., interrupted for several half-cycles of mains power), which will cause noticeable flickering of the visible light emanating from the IR heat source 42.

[0231] Inrush current and flicker issues can both be addressed using phase modulation. In this case, power is supplied to the IR heat source 42 using appropriate power semiconductor switching devices (tri-terminal triac switching elements). To minimize inrush current, the conduction angle of the tri-terminal triac switch can be modulated so that it turns on near the end of a mains half-cycle. This, in turn, distributes the power supplied to the IR lamp more evenly without the need for AC cycle-hopping techniques. Once the IR heat source 42 reaches a certain temperature, the tri-terminal triac switch can remain on for the entire duration of a mains half-cycle. If a power less than the rated power of the IR lamp is required, the above technique can be used to turn on the IR lamp at different points in the half-cycle (after heating), thus allowing complete control over the power supplied to the IR heat source 42.

[0232] For example only, please refer to the following link for the construction of a triac switching element and an example of how to implement the function of a triac switching element: https: / / eepower.com / technical-articles / alternating-current-ac-load-control-with-triacs / #, the content of which is incorporated here by reference.

[0233] Switching between active and idle modes

[0234] It should be understood that, due to the heating function of the styling device 10, compliance with regulations is necessary to ensure its safety. For example, current regulations require hair styling devices such as those described herein to have an integrated support frame that ensures the surrounding environment of the device 10 is not heated to excessively high temperatures when in use. Therefore, a mechanism is needed to prevent overheating of the surrounding environment when the device 10 is switched on but not in use (i.e., when the user places the device 10 in the support frame).

[0235] For example, one or more accelerometers or gyroscopes (or a combination of accelerometers and gyroscopes) may be provided in device 10 to detect movement of device 10. The accelerometers and gyroscopes may form part of motion sensing circuit 32 of control system 1500, which is connected to microprocessor 29.

[0236] The accelerometer and / or gyroscope in device 10 can be used to determine whether device 10 is in use (i.e., it is moving) or whether it is stationary. If device 10 is detected to be stationary, the device can be switched to an "idle" mode. In idle mode, the electrical energy supplied to the IR heat source 42 can be controlled to reduce the heat of the IR heat source, or alternatively, to turn off the IR heat source. Subsequently, if device 10 is detected to be moving, the device can be switched to an "active" mode. In active mode, the electrical energy supplied to the IR heat source 42 can be controlled to increase the heat of the IR heat source, or alternatively, to turn on the IR heat source. Similarly, the electrical energy supplied to the air heater and / or fan of the device can be adjusted depending on whether the device is in active or idle mode. For example, if the controller determines that the device is not in use and is in idle mode, the power can be reduced to lower the power of the air heater and / or fan (or they can be turned off together).

[0237] Temperature regulation for curling hair

[0238] It should be understood that adjusting the temperature of the styling device 10 to curl hair is beneficial, depending on whether the curling action is performed on wet ("moistened") or dry hair. Therefore, a mechanism is needed that can detect hair moisture based on whether the hair styling device is being used for curling.

[0239] For example, a sensor (humidity sensing circuit 27) can be configured to determine moisture content and / or humidity by combining one or more of the above-mentioned accelerometers or gyroscopes (or a combination of accelerometers and gyroscopes).

[0240] A sensor capable of determining moisture content and / or humidity can be, for example, any suitable sensor or sensor arrangement, and the output from this sensor can be processed to determine the moisture content of the user's hair. For example, when the device is used to dry / style a user's hair, the moisture content of the hair can be determined by measuring the heat load on one or more components of the device. Alternatively, the device can be configured to determine the moisture content of the hair based on a measured temperature (or a measured heat load), for example, using the temperature measurement circuit described above. Alternatively, the moisture content of the hair can be determined by monitoring the change in hair temperature over time when heat is applied to the hair, for example, using the temperature measurement circuit described above.

[0241] Alternatively, the device can be configured to determine the moisture content of hair by measuring capacitance. For example, when moisture from the hair comes into contact with a suitable material, the dielectric properties (and therefore capacitance) of the material change in proportion to the amount of water in contact with the material.

[0242] Alternatively, the device can be configured to use optical sensors to determine the moisture content of the hair. For example, the device can be configured to determine the moisture content of the hair by measuring the amount of light reflected from the hair, by measuring the attenuation of light passing through the hair, and / or by measuring the attenuation of light passing through the air near the hair.

[0243] Alternatively, the device can be configured to use a sensor configured to measure changes in resistance (or resistivity) to determine the moisture content of the hair. Alternatively, the device can be configured to use a sensor comprising multiple electrodes for transmitting electromagnetic waves through the hair to determine its moisture content.

[0244] When microprocessor 29 determines that the user's hair is drying based on data from one or more of the aforementioned possible sensors, microprocessor 29 can send a command to motion detection circuitry to determine the movement of device 10. If the microprocessor determines in response to the command that the device is stationary, it can be assumed that the device is being used to curl the dried hair. In this case, microprocessor can send a command to drive circuitry to control the electrical energy supplied to the IR heat source, thereby adjusting the temperature of the base to a temperature suitable for curling the dried hair. For example, the control system can raise the temperature of base 22 to improve the curling effect (e.g., it can be optimally raised to 185 degrees).

[0245] Furthermore, after the temperature has been maintained at the elevated level for a short period of time (e.g., a few seconds), the microprocessor can subsequently send a command to the drive circuitry to control the electrical energy supplied to the IR heat source to shut it off, thereby facilitating rapid cooling (known as a "cold blast"). The combination of appropriate temperature rise and subsequent cold blast advantageously provides improved curling effects.

[0246] Modify and replace

[0247] Detailed embodiments and some possible substitutions have been described above. As those skilled in the art will understand, many modifications and further substitutions can be made to the above embodiments while still benefiting from the invention embodied therein. Therefore, it should be understood that the invention is not limited to the described embodiments, but covers modifications that are obvious to those skilled in the art and fall within the scope of the appended claims.

[0248] The device 10 can be formed, in part or in whole, from an integral structure, for example, by 3D printing.

[0249] Although in the examples above, such as the example in Figure 8, the head 16 of device 10 is generally symmetrical in cross-section, this is not mandatory. For example, the head 16 could take the shape of a more conventional brush (e.g., a so-called "paddle" brush), with bristles and heating surface elements disposed on the upper surface of the device. In this example, the bristles 20 and heating surface elements 18 could be disposed only on the curved areas of the head 16.

[0250] The head 16 can be reversibly detached from the body 12. For example, the head 16 can be interchanged with other shapes or drying accessories of the device 10.

[0251] In the above example, device 10 may include a single heat source, or alternatively, two or more heat sources. More generally, the device may include any suitable means for transferring heat to the user's hair, such as any suitable conductive heater, thick-film printed heater, steam heater, or radiant heater.

[0252] In the above example, device 10 may include an IR heat source. Advantageously, when the device is powered by AC mains, one or more triac switching circuits can be used to power one or more IR heat sources. The triac switching circuits advantageously achieve phase modulation of the current supplied to the IR heat source, which can advantageously prevent inrush current and flickering problems that may occur during IR heat source power supply. For example, to minimize inrush current, the triac switch can be turned on near the end of a mains half-cycle to partially heat the device. Once the IR heat source is at a certain temperature, the triac switching element can remain on for the entire duration of the mains half-cycle. It should be understood that by configuring the aforementioned triac switch, the IR heat source can be turned on and off at different points in the half-cycle of the AC mains signal.

[0253] In the above example, the base 22 of the device is typically described as being made of a metallic material. However, it should be understood that when the heat source is an IR heat source, the base 22 need not be made of metal. For example, the base 22 can be made of a porous material, which may or may not be a metallic porous material (i.e., a material containing pores). Advantageously, by providing a porous material for the base 22, water in the hair being dried / styled using the device can be drawn into (attracted to) the base through capillary action, thereby greatly increasing the drying rate of the device.

[0254] In some of the above examples, the device need not necessarily include a moisture sensor for sensing hair moisture. Alternatively, for example, device 10 may be configured to heat hair using a predetermined set of operating parameters based on a target moisture content. For example, a table of target moisture content and the corresponding operating temperatures required to achieve that target moisture content may be predetermined and stored in memory. In this configuration, device 10 only needs to identify the operating temperature to be used (and any other relevant operating parameters) from the table and does not need to sense the moisture content of the hair. However, including a moisture sensor for sensing hair moisture is still beneficial for verifying that the hair has reached the expected moisture content and for more precise control of the moisture content.

[0255] In any of the above embodiments, the device may be equipped with a motion sensor (e.g., a motion sensor disposed in the body 12 of the device). The motion sensor may be used to sense whether the user is currently using the device (by sensing movement of the device) or to sense whether the device is idle (e.g., by sensing that the device has not moved for a predetermined period of time). The motion sensor may include a gyroscope, an accelerometer, a switch on a docking station on which the device is placed, and / or may include any other suitable type of sensor. When data from the motion sensor indicates that the device has not been moved for a predetermined period of time (e.g., 1 minute), the device may be placed in an idle mode in which the temperature of the head 16 is reduced (e.g., by turning off the heater 30 or reducing the power output of the heater 30). In the idle mode, the temperature of the base 22 may be reduced to an idle mode temperature, which is higher than the ambient temperature but lower than the normal operating temperature for drying and / or styling hair. For example, the operating temperature may be 120°C and the idle temperature may be 90°C.

[0256] When data from the motion sensor indicates that the user has picked up the device, the heater 30 is then controlled to return the temperature of the base 22 to the operating temperature used for drying and / or styling hair. Advantageously, the use of the idle mode increases the efficiency of the device and can also reduce damage to the surface caused by thermal stress that may occur when the device is left on the surface for an extended period of time. When the device is in idle mode and data from the motion sensor indicates that the user has picked up the device, the heater 30 (or multiple heaters) can operate in a "rise mode" to return the base 22 to the operating temperature (e.g., using the rise mode described above with reference to FIG. 23). More generally, the heater 30 can temporarily operate at a higher power output to increase the temperature of the base 22 from the idle temperature to the operating temperature used for drying and / or styling hair.

[0257] In any of the above embodiments, the base 22 can be formed from one or more cast base components. While using a single cast base 22 provides a more uniform heat distribution around the head of the device (due to the formation of a continuous ring of thermally conductive material around the periphery of the device), assembling two or more base components simplifies the manufacturing process. Similarly, while using a single cast heat exchanger 44 provides more efficient heat transfer, assembling two or more heat exchanger components simplifies the manufacturing process.

[0258] It should be understood that in all the above examples where an IR heat source is provided, electrical components within the device may need to be protected from IR radiation, which could damage the components. Therefore, those skilled in the art will understand that such electrical components can be protected, encapsulated, or sealed in a material that reflects IR radiation to protect them.

[0259] Throughout the description and claims of this specification, the words “comprising” and “including”, as well as variations thereof such as “comprising” and “containing”, mean “including but not limited to” and are not intended to (and will not) exclude other components, wholes or steps.

[0260] Various other modifications will be obvious to those skilled in the art and will not be described in further detail here.

Claims

1. An apparatus for drying or styling hair, comprising: handle part; The head is connected to the handle portion, the head includes a base and a plurality of bristles, the base having a hair contact surface for engaging a section of hair, the plurality of bristles being used to engage the section of hair; A first heater, the first heater being used to heat the hair contact surface of the head; as well as A second heater is used to heat the plurality of bristles, wherein the second heater includes at least one infrared (IR) heater or an induction heater.

2. The apparatus according to claim 1, wherein, The first heater includes at least one conductive strip configured to generate heat when an electric current flows through it, and wherein the at least one conductive strip is mounted to make thermal contact with the hair contact surface to heat the hair contact surface by conduction.

3. The apparatus according to claim 1, wherein, The second heater includes at least one conductive strip configured to generate heat when an electric current flows through it, and wherein the at least one conductive strip is mounted to be in thermal contact with the plurality of bristles to heat the plurality of bristles by conduction.

4. The apparatus according to claim 1, wherein, The second heater includes at least one coil configured to generate heat when an electric current flows through it, and wherein the at least one coil is wound around the plurality of bristles to heat the plurality of bristles by conduction.

5. The apparatus according to claim 4, wherein, The second heater includes multiple coils, each coil being electrically connected together in series.

6. The apparatus according to claim 4, wherein, The second heater includes multiple coils, each of which is electrically isolated from the other coils to allow independent control of each coil.

7. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; as well as At least one infrared (IR) heater is provided to provide thermal energy to heat the base, wherein the at least one infrared heater extends along the length of the head and has a non-uniform heat distribution along the length of the head; as well as A means for improving the heating uniformity of the head along its length by the at least one infrared heater.

8. The apparatus according to claim 7, wherein, Devices for improving the heating uniformity of the head along its length include a head that is selectively anodized or coated.

9. The apparatus according to claim 7, wherein, The apparatus for improving the heating uniformity of the head along its length includes a plurality of IR heaters connected in series along the length of the head.

10. The apparatus according to claim 9, wherein, Each of the plurality of IR heaters is independently controllable, and improving the heating uniformity of the head along its length includes adjusting the power of at least one of the IR heaters based on the sensed temperature of the hair contact surface.

11. The apparatus according to claim 7, wherein, The device for improving the heating uniformity of the head along its length includes a thermally insulated end of the head to minimize heat loss to the handle portion and the end of the device.

12. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; as well as At least one infrared (IR) heater is provided to provide thermal energy to heat the base, wherein the at least one IR heater extends along the length of the head, wherein the IR heater includes a heating filament wound along its length, and wherein the winding density of the filament varies along the length of the IR heater to adjust the heating effect of the at least one IR heater on the base.

13. An apparatus for drying or styling hair, comprising: handle part; The head is connected to the handle portion, and the head includes a barrel having a hair contact surface for engaging a section of hair, wherein the barrel is divided into multiple sections. as well as Multiple infrared (IR) heaters are provided to provide heat energy to heat the cylinder, wherein a corresponding IR heater is provided for each section of the cylinder to heat the corresponding portion of the hair contact surface.

14. The apparatus according to claim 13, wherein, The cylinder is formed from extruded thermally conductive material.

15. The apparatus according to claim 13 or 14, wherein, The multiple IR heaters are controlled independently.

16. The apparatus according to claim 15, wherein, A corresponding temperature sensor is provided to sense the temperature of the hair contact surface in each partition, and a controller is provided to control the heating provided by each IR heater based on the sensed temperature of the hair contact surface in the corresponding partition.

17. The apparatus according to claim 13, wherein, The plurality of IR heaters are centrally disposed within the internal space of the cylinder, and a heat shield is provided between adjacent IR heaters.

18. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; as well as At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base, said at least one infrared heater comprising: At least one filament, the at least one filament generating radiant heat in response to an electric current passing through it; and A glass housing that surrounds the filament; The glass outer shell is made of tempered glass.

19. The apparatus according to claim 18, wherein, The glass housing is made of Schott glass.

20. The apparatus according to claim 18, wherein, The filament is one of the following: short-wave tungsten filament, fast medium-wave tungsten filament, and carbon fiber filament.

21. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; as well as At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base, said at least one infrared heater comprising: At least one filament, the at least one filament generating radiant heat in response to an electric current passing through it; and A glass housing that surrounds the filament; The glass housing is mounted inside the head via a multi-spring suspension system, which reduces the impact force on the IR heater.

22. The apparatus according to claim 21, wherein, The IR heater is elongated, and a multi-spring suspension system is provided at each end of the IR heater.

23. The apparatus of claim 21, comprising a plurality of bristles externally mounted on the base.

24. The apparatus according to claim 23, wherein, The multiple bristles are mounted on the base by springs to absorb the energy of the impact force on the IR heater.

25. The apparatus according to claim 21, wherein, The device also includes a pleated area feature and / or a damper in the handle portion to absorb the energy of the impact force on the IR heater.

26. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base; Multiple vent holes are located in the base; as well as A device for blocking the line of sight toward the IR heater through the plurality of vents.

27. The apparatus according to claim 26, wherein, The device for blocking line of sight toward the IR heater through the plurality of vents includes: Multiple internal air channels, each internal air channel being formed by a wall configured to block IR radiation from the at least one IR heater from propagating through the internal air channel toward at least one of the multiple vents.

28. The apparatus according to claim 26, wherein, The device for blocking line of sight toward the IR heater through the plurality of vents includes: A patterned coating is applied to the at least one IR heater to selectively block IR radiation emitted from the at least one IR heater in a direction toward the plurality of vents.

29. An apparatus for drying or styling hair, comprising: handle part; The head is connected to the handle portion, the head includes a base and a plurality of bristles, the base having a hair contact surface for engaging a section of hair, the plurality of bristles being used to engage the section of hair; At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base; as well as The top surface of the base includes a plurality of openings corresponding to the plurality of bristles, and The plurality of bristles are retractable below the top surface of the base.

30. The apparatus according to claim 29, wherein, The plurality of bristles can be retracted below the top surface of the base by the rotational movement of the bristles, the rotational movement of the bristles being actuated by the rotation of the handle portion.

31. The apparatus according to claim 30, wherein, The plurality of bristles can retract below the top surface of the base via the rotational movement of the bristles.

32. The apparatus according to claim 30, wherein, The plurality of bristles can retract to below the top surface of the base via radial movement of the bristles, the radial movement of the bristles being actuated by rotation of the handle portion.

33. The apparatus according to claim 30, wherein, The plurality of bristles can be retracted below the top surface of the base by axial movement of the bristles, the axial movement of the bristles being actuated by linear or rotational movement of the handle portion.

34. An apparatus for drying or styling hair, comprising: handle part; The head is connected to the handle portion, the head includes a base and a plurality of bristles, the base having a hair contact surface for engaging a section of hair, the plurality of bristles being used to engage the section of hair; as well as At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base; and Each subset of the plurality of bristles is mounted on a corresponding plate, the plate being mounted on the base, the plate being rotatable by 180 degrees, wherein the rotation of each plate is actuated by the rotation of the handle portion.

35. An apparatus for drying or styling hair, comprising: handle part, The head is connected to the handle portion, the head includes a base and a plurality of bristles, the base having a hair contact surface for engaging a section of hair, the plurality of bristles being used to engage the section of hair; At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base; At least one motion sensor, said at least one motion sensor being used to sense the motion of the device; At least one humidity sensing device, the at least one humidity sensing device being used to sense the humidity of the section of hair; as well as A controller, configured to process data received from the at least one motion sensor and the at least one humidity sensing device, In response to determining that the device is stationary for a predetermined period of time and that the section of hair is dry, the temperature of the hair contact surface and / or multiple bristles is increased. In response to determining that the device is moving, the temperature of the hair contact surface and / or the bristles is maintained or the temperature of the hair contact surface and / or the bristles is reduced.

36. The apparatus according to claim 35, wherein, In response to determining that the device is stationary for a predetermined period of time and that the section of hair is dry, the airflow from the base is reduced, and In response to determining that the device is moving, the airflow from the base is maintained or the airflow from the base is increased.

37. The apparatus according to any one of claims 35 and 36, wherein, The at least one humidity sensing device includes at least one of the following: a humidity sensor, a temperature sensor, a capacitive sensor, and a combination thereof.

38. The apparatus according to claims 35 to 37, wherein, The at least one motion sensor includes at least one of the following: an accelerometer, a gyroscope, and a combination thereof.

39. An apparatus for drying or styling hair, comprising: handle part; A head, which is connected to the handle portion, the head including a base having a hair contact surface for engaging a section of hair; as well as At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base, and The base is made of a porous material.

40. The apparatus according to claim 39, wherein, The porous material is at least one of the following: sintered bronze, Duocel, aluminum foam, and Alupor.

41. The apparatus according to claim 40, wherein, The porous material is configured to have a pore size and / or pore density that provides a predetermined back pressure for airflow through the base.

42. An apparatus for drying or styling hair, comprising: handle part; The head is connected to the handle portion, the head includes a base and a plurality of bristles, the base having a hair contact surface for engaging a section of hair, the plurality of bristles being used to engage the section of hair; At least one infrared (IR) heater, said at least one infrared (IR) heater being used to provide thermal energy to heat the base; as well as A semiconductor switching device for controlling the surge current supplied to the at least one IR heater during the initial heating process of the at least one IR heater.

43. The apparatus according to claim 42, wherein, The semiconductor switching device is a three-terminal bidirectional thyristor switch circuit.

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