Heating device and hair straightening comb

Abstract

The utility model relates to a heating device and a hair straightening comb, the heating device comprises a hair combing module and a heating assembly, the hair combing module comprises a mounting seat and a plurality of comb tooth parts, the comb tooth parts are fixedly mounted on the mounting seat, a heating body is inserted in a mounting groove formed in each comb tooth part, the heating body generates heat after being electrified, and the heating assembly is arranged on the mounting seat. After the heated comb tooth pieces make contact with hair, heat on the comb tooth pieces is conducted to the hair, the heated hair is soft and easy to comb, the shape of the hair is changed through friction force between the comb tooth pieces and the hair, and the hair is straighter; due to the fact that the whole heating body can generate heat, the heating body can evenly transfer heat to the periphery of the comb tooth piece in the installation groove, the heating efficiency of the comb tooth piece is improved, power consumption is reduced, it is guaranteed that the heating temperature of the comb tooth piece is accurate, hair is protected, and the hair straightening effect is improved. And the plurality of heating bodies are electrically connected with the power supply after being connected in series and / or in parallel, so that centralized power supply is realized.

Description

Technical Field

[0001] The present application relates to the technical field of hair straightening combs, and in particular to a heating device and a hair straightening comb. Background Art

[0002] A hair straightening comb is a hairdressing appliance that generates heat through an electric heating device and transfers the heat to the comb teeth to heat the comb teeth, which then use the comb teeth to heat the hair to achieve the effect of straightening hair.

[0003] In the existing hair straightening comb, the comb teeth are placed perpendicular to the heating element, and the heat transfer route of the heating element is from the bottom of the comb teeth to the top of the comb teeth, which is inefficient and consumes a lot of power. Especially when the hair straightening comb is powered by batteries, the heating effect of the comb teeth is not ideal. Utility Model Content

[0004] Based on this, it is necessary to provide a heating device and a hair straightening comb to address the problems of low efficiency and high power consumption when heating the comb teeth of the existing hair straightening comb.

[0005] In a first aspect, the present application provides a heating device, the heating device comprising a hair combing module and a heating component, the heating component being disposed on the hair combing module, and the heating component being used to heat the hair combing module;

[0006] The hair combing module comprises a mounting seat and a comb tooth piece, wherein the comb tooth piece is multiple in number and the multiple comb tooth pieces are spaced apart on the mounting seat, and a mounting groove is arranged inside the comb tooth piece;

[0007] The heating assembly includes a plurality of heating elements, the number of which is the same as the number of the comb teeth, and the plurality of heating elements are respectively inserted into the plurality of mounting grooves, and the plurality of heating elements are electrically connected to a power supply after being connected in series and / or in parallel.

[0008] The heating device provided in the first aspect of the present application includes a hair combing module and a heating assembly. The hair combing module includes a mounting base and a plurality of comb teeth. The plurality of comb teeth are fixedly mounted on the mounting base. A heating element is inserted into the mounting groove formed inside each comb tooth. The heating element generates heat after being energized. After the heated comb teeth come into contact with the hair, the heat on the comb teeth can be transferred to the hair. The heated hair becomes soft and easy to comb. The friction between the comb teeth and the hair can change the shape of the hair to make it straighter. Since the heating element can generate heat by itself as a whole, the heating element can evenly transfer heat to the surroundings of the comb teeth in the mounting groove, which not only improves the heating efficiency of the comb teeth and reduces power consumption, but also ensures that the heating temperature of the comb teeth is accurate, protects the hair and improves the straightening effect. In addition, the plurality of heating elements are electrically connected to the power supply after being connected in series and / or in parallel to realize centralized power supply.

[0009] In one embodiment, the comb tooth member includes an outer shell and an inner shell, the outer shell is connected to the mounting seat, the outer shell is sleeved on the surface of the inner shell, the inner shell and the outer shell are detachably connected, and the mounting groove is formed inside the inner shell.

[0010] The heating device in the above embodiment further defines that the comb-tooth member is composed of at least an outer shell and an inner shell that are detachable from each other, and a mounting groove for mounting the heating element is formed inside the inner shell. When assembling the comb-tooth member and the heating element, the heating element can be first inserted into the mounting groove of the inner shell, and then the outer shell is sleeved on the surface of the inner shell. In this way, even if a single heating element is damaged, it can be replaced independently without replacing the entire body, thereby reducing maintenance costs.

[0011] In one embodiment, the outer shell includes an insulation part and a frame body, the insulation part, the frame body and the mounting seat are connected in sequence from top to bottom, the frame body is sleeved on the surface of the heating element, the frame body is provided with at least one hollow part, and the inner shell part is exposed to the frame body through the hollow part.

[0012] The heating device in the above embodiment further defines that the outer shell can be divided into at least a heat insulating part and a frame body, the two ends of the frame body are respectively connected to the heat insulating part and the mounting seat, the heat insulating part is far away from the mounting seat, and the heat insulating part has weak thermal conductivity, so that the heat insulating part obtains less heat when the heating element is heated. Therefore, during the combing process, the heat insulating part can directly contact the scalp surface without causing burns. Based on the hollow part on the frame body, the inner shell can be exposed to the outer shell through the hollow part, so that the inner shell can directly contact the hair, the heat transfer efficiency is higher, and the straightening effect is improved.

[0013] In one embodiment, the inner shell includes a first heat conducting carrier and a second heat conducting carrier, and the first heat conducting carrier and the second heat conducting carrier are detachably connected and enclosed to form the installation groove.

[0014] The heating device in the above embodiment further defines that the first heat-conducting carrier and the second heat-conducting carrier of the inner shell are detachably connected. For example, the first heat-conducting carrier and the second heat-conducting carrier can be detachably connected by snapping together. During the assembly of the inner shell and the heating element, the heating element can be first attached to the inner side of the first heat-conducting carrier, and then the second heat-conducting carrier can be snapped onto the first heat-conducting carrier.

[0015] In one of the embodiments, the length direction of the heating element is parallel to the radial direction of the comb teeth, and the heating element is closely attached to the side wall of the mounting groove.

[0016] The heating device in the above embodiment further defines that the length direction of the heating element is parallel to the radial direction of the comb tooth part. Specifically, the inner shell of the comb tooth part is a cylindrical shell, and the length direction of the mounting groove is parallel to the length direction of the inner shell. The heating element is inserted into the mounting groove and fits tightly with the groove wall of the mounting groove, thereby improving the heat transfer efficiency between the heating element and the inner shell, and at the same time allowing the heat generated by the heating element to be evenly transferred to the surroundings of the inner shell.

[0017] In one embodiment, every N heating elements are electrically connected to each other to form a heating group, and a plurality of the heating groups are distributed on the mounting base at intervals, and each heating group extends two electrodes.

[0018] The heating device in the above embodiment further defines that every N heating elements among the multiple heating elements are electrically connected to each other to form a heating group, and each heating group extends two electrodes, which are respectively used to connect to the positive and negative electrodes of the power supply. The heating group is connected to the power supply through the two electrodes, so as to realize centralized power supply and control of N heating elements in a heating component.

[0019] In one of the embodiments, the heating component further includes a wiring circuit board, which is disposed on the mounting base, and the two electrodes of the heating group are electrically connected to the conductive contacts of the wiring circuit board respectively.

[0020] The heating device in the above embodiment further defines that the electrodes of the multiple heating groups are centrally connected on a wiring circuit board, and the wiring circuit board is provided with multiple power supply lines to enable the multiple heating groups to be connected in series and / or in parallel.

[0021] In one embodiment, a plurality of notches are provided on the wiring circuit board, and every two notches correspond to two electrodes of the heating group. The two electrode portions of the heating group pass through the corresponding two notches and are welded to the conductive contacts of the wiring circuit board.

[0022] The heating device in the above embodiment further defines that a plurality of notches are provided on the wiring circuit board. Specifically, the conductive contacts on the wiring circuit board are arranged on the back side, and the two electrodes on the heating group are welded to the conductive contacts after passing through two notches arranged opposite to each other on the left and right sides.

[0023] In one of the embodiments, the heating device further comprises a temperature sensor, and the temperature sensor is disposed on the comb tooth member or the mounting seat, and the temperature sensor is used to obtain the temperature of the comb tooth member.

[0024] The heating device in the above embodiment further defines that a temperature sensor is installed on the comb tooth member or the mounting seat, and the temperature sensor can be used to detect the heating temperature of the comb tooth member in real time, so that the corresponding control module can adjust the working state of the heating element in time.

[0025] In a second aspect, the present application provides a hair straightening comb, the hair straightening comb comprising:

[0026] The heating device described in any one of the above items;

[0027] A shell assembly, the mounting seat is arranged on the shell assembly, and a first cavity is opened in the shell assembly;

[0028] A battery module and a control module, wherein the battery module and the control module are both installed in the first cavity, the battery module and the plurality of heating elements are electrically connected to the control module respectively, the battery module serves as a power supply to supply power to the plurality of heating elements, and the control module is used to control the working state of the heating elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is one of the structural schematic diagrams of a heating device in one embodiment;

[0030] Figure 2 It is a schematic diagram of the assembly of a heating device in one embodiment;

[0031] Figure 3 is a schematic structural diagram of an inner shell group in one embodiment;

[0032] Figure 4 It is a schematic diagram of assembling the heating element and the inner shell in one embodiment;

[0033] Figure 5 The second structural schematic diagram of a heating device in one embodiment (hidden wiring circuit board);

[0034] Figure 6 This is a third structural schematic diagram of a heating device in an embodiment;

[0035] Figure 7 It is a schematic diagram of the structure of a mounting base and an outer shell in one embodiment.

[0036] Reference numerals:

[0037] 1 hair combing module, 11 mounting seat, 12 combing tooth member, 121 outer shell, 1211 heat insulation part, 1212 frame body, 122 inner shell, 1221 first heat conducting carrier, 1222 second heat conducting carrier, 120 inner shell group, 102 hollow part;

[0038] 21 heating element, 210 heating group, 211 electrode, 22 wiring circuit board, 201 notch;

[0039] 3 Temperature sensors. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0042] In one embodiment, Figures 1 to 3 As shown, a heating device is provided, comprising a hair combing module 1 and a heating component, wherein the heating component is arranged on the hair combing module 1, and the heating component is used to heat the hair combing module 1;

[0043] The hair combing module 1 comprises a mounting seat 11 and a comb tooth member 12. There are a plurality of comb tooth members 12, which are spaced apart on the mounting seat 11. A mounting groove is provided inside the comb tooth member 12.

[0044] The heating assembly includes a plurality of heating elements 21, the number of the heating elements 21 is the same as the number of the comb teeth 12, the plurality of heating elements 21 are respectively inserted into a plurality of mounting grooves, and the plurality of heating elements 21 are electrically connected to a power supply after being connected in series and / or in parallel.

[0045] The mounting base 11 may be, but is not limited to, a metal shell or a non-metal shell. For example, the mounting base 11 is a plastic shell. The mounting base 11 may be in a plate-like structure. A plurality of comb teeth 12 may be fixedly mounted on the mounting base 11. The mounting base 11 is provided with a plurality of through slots, each of which corresponds to the installation of one or more heating elements 21. The comb teeth 12 are mounted on the front of the mounting base 11. The electrodes 211 extending from the heating element 21 in the comb teeth 12 pass through the through slots and are then led to the back of the mounting base 11, so that the electrodes 211 of the heating element 21 are electrically connected to the power supply.

[0046] The comb teeth 12 can be used to straighten the hair. Specifically, after the heated comb teeth 12 contacts the hair, the heat on the comb teeth 12 can be transferred to the hair, and the heated hair becomes soft and easy to comb. The friction between the comb teeth 12 and the hair can change the shape of the hair and make it straighter. It should be noted that the spacing between two adjacent comb teeth 12 will affect the magnitude of the friction between the comb teeth 12 and the hair. The smaller the spacing between the comb teeth 12, the larger the contact area between the hair and the comb teeth 12, the greater the friction, and the better the hair straightening effect. The multiple comb teeth 12 can be divided into M comb tooth groups, and the M comb tooth groups can be distributed side by side and in the same direction on the mounting base 11.

[0047] The heating element 21 can be used to heat the comb tooth part 12. Specifically, the heating element 21 is inserted into the installation groove formed inside the comb tooth part 12. The heating element 21 generates heat after being energized. Since the heating element 21 as a whole can generate heat by itself, the heating element 21 can evenly transfer heat to the surroundings of the comb tooth part 12 in the installation groove, which not only improves the heating efficiency of the comb tooth part 12 and reduces power consumption, but also ensures that the heating temperature of the comb tooth part 12 is accurate, protects the hair and improves the straight hair effect. Multiple heating elements 21 can be electrically connected in series and / or in parallel. For example, each heating element 21 is electrically connected to the power supply after being connected in series by a wire. It should be noted that in other embodiments, each heating element 21 is electrically connected to the power supply after being connected in parallel by a wire, or some heating elements 21 are connected in series and in parallel with other heating elements 21. In addition, the power supply can be but is limited to a lithium battery or a 220V mains electricity.

[0048] The heating device in each of the above embodiments includes a combing module 1 and a heating assembly. The combing module 1 includes a mounting seat 11 and a plurality of comb teeth 12. The plurality of comb teeth 12 are fixedly mounted on the mounting seat 11. A heating element 21 is inserted into the mounting groove formed inside each comb tooth 12. The heating element 21 generates heat after being energized. After the heated comb teeth 12 come into contact with the hair, the heat on the comb teeth 12 can be transferred to the hair. The heated hair becomes soft and easy to comb. The friction between the comb teeth 12 and the hair can change the shape of the hair and make it straighter. Since the heating element 21 can generate heat by itself as a whole, the heating element 21 can evenly transfer heat to the surroundings of the comb teeth 12 in the mounting groove, which not only improves the heating efficiency of the comb teeth 12 and reduces power consumption, but also ensures that the heating temperature of the comb teeth 12 is accurate, protects the hair and improves the straightening effect. In addition, the plurality of heating elements 21 are electrically connected to the power supply after being connected in series and / or in parallel to realize centralized power supply.

[0049] In some embodiments, Figure 2As shown, the comb tooth member 12 includes an outer shell 121 and an inner shell 122. The outer shell 121 is connected to the mounting seat 11. The outer shell 121 is sleeved on the surface of the inner shell 122. The inner shell 122 and the outer shell 121 are detachably connected, and a mounting groove is formed inside the inner shell 122.

[0050] The heating device in the above embodiment further defines that the comb-tooth member 12 is at least composed of an outer shell 121 and an inner shell 122 which are detachable from each other, and a mounting groove for mounting the heating element 21 is formed inside the inner shell 122. When assembling the comb-tooth member 12 and the heating element 21, the heating element 21 can be first inserted into the mounting groove of the inner shell 122, and then the outer shell 121 is sleeved on the surface of the inner shell 122. In this way, even if a single heating element 21 is damaged, it can be replaced independently without replacing the entire body, thereby reducing maintenance costs.

[0051] Among them, the thermal conductivity of the inner shell 122 is higher than that of the outer shell 121. Since the end of the outer shell 121 can directly contact the scalp surface, if the temperature of the end of the outer shell 121 is too high, it is easy to burn the scalp.

[0052] In some embodiments, Figure 2 As shown, the outer shell 121 includes a heat insulating part 1211 and a frame body 1212. The heat insulating part 1211, the frame body 1212 and the mounting seat 11 are connected in sequence from top to bottom. The frame body 1212 is sleeved on the surface of the heating element 21. The frame body 1212 has at least one hollow part 102, and a part of the inner shell 122 is exposed to the frame body 1212 through the hollow part 102.

[0053] The heating device in the above embodiment further defines that the outer shell 121 can be divided into at least a heat insulating portion 1211 and a frame body 1212. The two ends of the frame body 1212 are respectively connected to the heat insulating portion 1211 and the mounting seat 11. The heat insulating portion 1211 is far away from the mounting seat 11. The heat insulating portion 1211 has a weak thermal conductivity, so that the heat insulating portion 1211 obtains less heat when the heating element 21 is heated. Therefore, during the combing process, the heat insulating portion 1211 of the comb tooth 12 can directly contact the scalp surface without causing burns. Based on the hollow portion 102 provided on the frame body 1212, the inner shell 122 can be exposed to the outer shell 121 through the hollow portion 102, so that the inner shell 122 can directly contact the hair, which has a higher heat transfer efficiency and improves the straightening effect.

[0054] In some embodiments, Figure 2 and Figure 3 As shown, the inner shell 122 includes a first heat conducting carrier 1221 and a second heat conducting carrier 1222 , and the first heat conducting carrier 1221 and the second heat conducting carrier 1222 are detachably connected and enclosed to form a mounting groove.

[0055] The heating device in the above embodiment further defines that the first heat conductive carrier 1221 and the second heat conductive carrier 1222 of the inner shell 122 are detachably connected. For example, the first heat conductive carrier 1221 and the second heat conductive carrier 1222 can be detachably connected by snapping together. During the assembly of the inner shell 122 and the heating element 21, the heating element 21 can be first attached to the inner side of the first heat conductive carrier 1221, and then the second heat conductive carrier 1222 can be snapped onto the first heat conductive carrier 1221.

[0056] The first heat conducting carrier 1221 and the second heat conducting carrier 1222 may be but are not limited to metal shells or non-metal shells. For example, the first heat conducting carrier 1221 and the second heat conducting carrier 1222 are metal shells, and the metal material is copper, aluminum, iron, steel, etc. with strong thermal conductivity.

[0057] In some embodiments, the length direction of the heating element 21 is parallel to the radial direction of the comb-tooth member 12 , and the heating element 21 is closely attached to the side wall of the installation groove.

[0058] The heating device in the above embodiment further defines that the length direction of the heating element 21 is parallel to the radial direction of the comb tooth part 12. Specifically, the inner shell 122 of the comb tooth part 12 is a cylindrical shell, and the length direction of the mounting groove is parallel to the length direction of the inner shell 122. The heating element 21 is inserted into the mounting groove and fits tightly with the groove wall of the mounting groove, thereby improving the heat transfer efficiency between the heating element 21 and the inner shell 122, and at the same time allowing the heat generated by the heating element 21 to be evenly transferred to the surrounding areas of the inner shell 122.

[0059] In some embodiments, Figure 1 and Figure 2 As shown, every N heating elements 21 are electrically connected to each other to form a heating group 210 . The plurality of heating groups 210 are distributed on the mounting base 11 at intervals, and each heating group 210 extends two electrodes 211 .

[0060] The heating device in the above embodiment further defines that each N heating elements 21 in the plurality of heating elements 21 are electrically connected to each other to form a heating group 210, and each heating group 210 extends two electrodes 211, which are respectively used to connect the positive electrode and the negative electrode of the power supply, and the heating group 210 is connected to the power supply through the two electrodes 211, so that the N heating elements 21 in a heating group 210 are centrally powered and controlled. In addition, N inner shells 122 can be connected together to form an inner shell group 120, and one inner shell group 120 is correspondingly installed with one heating group 210.

[0061] It should be noted that the number N can be 1, 2, 3, 4, 5, etc. In this embodiment, N is 3, and every three heating elements 21 are electrically connected to each other to form a heating group 210 , and every three inner shells 122 form an inner shell group 120 .

[0062] In some embodiments, Figure 1 and Figure 3 As shown, the heating assembly further includes a wiring circuit board 22 , which is disposed on the mounting seat 11 , and the two electrodes 211 of the heating group 210 are electrically connected to the conductive contacts of the wiring circuit board 22 , respectively.

[0063] The heating device in the above embodiment further defines that the electrodes 211 of the multiple heating groups 210 are centrally connected to the wiring circuit board 22, and the wiring circuit board 22 is provided with multiple power supply lines to enable the multiple heating groups 210 to be connected in series and / or in parallel.

[0064] Specifically, the wiring circuit board 22 is mounted on the back of the mounting seat 11, and the electrodes 211 drawn from the heating element 21 can be connected to the wiring circuit board 22 on the back of the mounting seat 11. In addition, the wiring circuit board 22 can also be used to fix the heating element 21.

[0065] In some embodiments, Figure 3 As shown, a plurality of notches 201 are provided on the wiring circuit board 22 , and each two notches 201 correspond to two electrodes 211 of a heating group 210 . The two electrodes 211 of the heating group 210 partially penetrate the corresponding two notches 201 and are welded to the conductive contacts of the wiring circuit board 22 .

[0066] In the above embodiment, the heating device further defines that a plurality of notches 201 are provided on the wiring circuit board 22. Specifically, the conductive contacts on the wiring circuit board 22 are arranged on the back, and the two electrodes 211 on the heating group 210 pass through the two notches 201 arranged opposite to each other on the left and right sides and are welded to the conductive contacts. The electrodes 211 leading out of the heating group 210 may be a sheet metal structure, and the electrodes 211 are bent after passing through the notches 201, so that the bent portion of the electrodes 211 fits the conductive contacts on the wiring circuit board 22.

[0067] In some embodiments, Figure 4 As shown, the heating device further comprises a temperature sensor 3 , which is disposed on the comb-tooth member 12 or the mounting seat 11 , and is used to obtain the temperature of the comb-tooth member 12 .

[0068] In the above embodiment, the heating device further defines that a temperature sensor 3 is installed on the comb tooth member 12 or the mounting seat 11, and the temperature sensor 3 can be used to detect the heating temperature of the comb tooth member 12 in real time, so that the corresponding control module can adjust the working state of the heating element 21 in time.

[0069] In one embodiment, a hair straightening comb is provided, the hair straightening comb comprising:

[0070] A heating device according to any of the above;

[0071] A housing assembly, wherein the mounting seat 11 is arranged on the housing assembly, and a first cavity is provided in the housing assembly;

[0072] The battery module and the control module are both installed in the first cavity. The battery module and the multiple heating elements 21 are electrically connected to the control module respectively. The battery module serves as a power supply to power the multiple heating elements 21. The control module is used to control the working state of the heating element 21.

[0073] The housing assembly can be held by a user, and the first cavity formed inside the housing assembly can be used to install a battery module and a control module.

[0074] The battery module includes a rechargeable battery and a charging interface. The heating element 21 is powered by the rechargeable battery, so that the straightening comb of the present application can be convenient to carry and use outside, and can be flexibly adapted to multiple usage scenarios; moreover, based on the above-mentioned heating device, even if it is not connected to the mains power supply, the heating device can heat the comb teeth 12 with good heating effect and low power consumption under the power supply of the rechargeable battery; in addition, the rechargeable battery can be charged with an external power supply through the charging interface.

[0075] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present utility model patent shall be subject to the attached claims.

Claims

1. A heating device, comprising a hair combing module (1) and a heating component, wherein the heating component is arranged on the hair combing module (1), and the heating component is used to heat the hair combing module (1), characterized in that: The hair combing module (1) comprises a mounting seat (11) and a comb tooth piece (12); the comb tooth piece (12) is provided in a plurality and the plurality of comb tooth pieces (12) are distributed on the mounting seat (11) at intervals; and a mounting groove is provided inside the comb tooth piece (12); The heating assembly comprises a plurality of heating elements (21), the number of the heating elements (21) being the same as the number of the comb teeth (12), the plurality of heating elements (21) being respectively inserted into the plurality of mounting grooves, and the plurality of heating elements (21) being electrically connected to a power supply after being connected in series and / or in parallel.

2. The heating device according to claim 1, characterized in that The comb tooth member (12) comprises an outer shell (121) and an inner shell (122); the outer shell (121) is connected to the mounting seat (11); the outer shell (121) is sleeved on the surface of the inner shell (122); the inner shell (122) and the outer shell (121) are detachably connected; and the mounting groove is formed inside the inner shell (122).

3. The heating device according to claim 2, characterized in that: The outer shell (121) comprises a heat insulating portion (1211) and a frame body (1212); the heat insulating portion (1211), the frame body (1212) and the mounting seat (11) are connected in sequence from top to bottom; the frame body (1212) is sleeved on the surface of the heating element (21); the frame body (1212) is provided with at least one hollow portion (102); and a portion of the inner shell (122) is exposed outside the frame body (1212) through the hollow portion (102).

4. The heating device according to claim 2, characterized in that: The inner shell (122) comprises a first heat-conducting carrier (1221) and a second heat-conducting carrier (1222); the first heat-conducting carrier (1221) and the second heat-conducting carrier (1222) are detachably connected and enclosed to form the installation groove.

5. The heating device according to any one of claims 1 to 4, characterized in that: The length direction of the heating element (21) is parallel to the radial direction of the comb tooth member (12), and the heating element (21) is in close contact with the side wall of the installation groove.

6. The heating device according to claim 1, characterized in that: Every N heating elements (21) are electrically connected to each other to form a heating group (210); a plurality of heating groups (210) are distributed on the mounting seat (11) at intervals; and each heating group (210) extends two electrodes (211).

7. The heating device according to claim 6, characterized in that The heating component also includes a wiring circuit board (22), the wiring circuit board (22) being arranged on the mounting seat (11), and the two electrodes (211) of the heating group (210) being electrically connected to the conductive contacts of the wiring circuit board (22) respectively.

8. The heating device according to claim 7, characterized in that: The wiring circuit board (22) is provided with a plurality of notches (201), and each two of the notches (201) correspond to two electrodes (211) of the heating group (210). The two electrodes (211) of the heating group (210) partially penetrate the corresponding two notches (201) and are then welded to the conductive contacts of the wiring circuit board (22).

9. The heating device according to claim 1, characterized in that: It also comprises a temperature sensor (3), wherein the temperature sensor (3) is arranged on the comb tooth piece (12) or the mounting seat (11), and the temperature sensor (3) is used to obtain the temperature of the comb tooth piece (12).

10. A hair straightening comb, characterized in that: include: A heating device as claimed in any one of claims 1 to 9; A housing assembly, the mounting seat (11) being arranged on the housing assembly, and a first cavity being provided in the housing assembly; A battery module and a control module, wherein the battery module and the control module are both installed in the first cavity, the battery module and the plurality of heating elements (21) are electrically connected to the control module respectively, the battery module serves as a power supply to supply power to the plurality of heating elements (21), and the control module is used to control the working state of the heating elements (21).

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