Heating plate for hair iron

Abstract

Proposed is a heating plate for a hair iron. The heating plate is provided with a heat diffusion plate positioned between a ceramic heating plate and a ceramic heater, so that there is an effect that a thermal equilibrium state of the ceramic heating plate and the heat diffusion plate is achieved within a short time as heat of the ceramic heater is conducted overa wide region on the ceramic heating plate.

Description

Technical Field

[0001] The present disclosure relates to a heating plate for a hair iron. More particularly, the present disclosure relates to a heating plate for a hair iron, the heating plate being configured such that a flat portion is formed at a center portion of a ceramic heating plate that is configured to be brought into contact with hair directly and rounded spaced portions are formed on both side portions of the flat portion so that creasemarksare prevented from remaining on hair during use of the hair iron, and the heating plate being configured such that a ceramic heater which is a heat source is provided inside the ceramic heating plate and a heat diffusion plate configured to disperse and transfer heat from the ceramic heater is coupled to the ceramic heater.Background Art

[0002] Generally, a hair iron is used to straighten or roll hair into a desired shape. An electric heater is embedded inside heating plates facing each other vertically and the heating plates generate heat when power is supplied to the electric heater.

[0003] Accordingly, various technologies have been proposed to allow efficient deformation of hair shape while preventing heat of the electric heater from being transferred to the outside of the heating plates or preventing heat from being concentrated on specific regions of the heating plates so as to avoid damage to hair.

[0004] As related conventional technology, Korean Utility Model No. 20-0491139 (February 19, 2020) discloses a "HEATING PLATE STRUCTURE FOR HAIR IRON".

[0005] As illustrated in FIG. 1, the related art relates to a heating plate 100 of a hair iron, the heating plate 100 being mounted respectively at a front lower portion of an upper body 10 and a front upper portion of a lower body 20 and being configured to be in contact with each other during hair straightening.

[0006] The heating plate 100 includes: a rectangular heating member 110 which is formed of one material selected from a ceramic material, a mineral material having excellent thermal conductivity, and a carbon material and which has an outer surface 111 contacting the opposing heating plate 100 formed as a curved surface protruding convexly toward a center thereof and has an inner surface 112 formed as a flat surface; and a supporting means S provided at both sides of the inner surface 112 of the heating member 110 and configured to support a plate spring 40 and a cover 50 that are configured to bring a heater 30 into close contact with the inner surface 112.

[0007] The supporting means S has a "T"-shaped configuration integrally including a vertical piece S1 arranged along a longitudinal direction of the inner surface 112 of the heating member 110 and locking pieces S2 and S3 bent at right angles inward and outward, respectively, at a first end of the vertical piece S1. Furthermore, a fixing groove 112a into which a second end of the vertical piece S1 is inserted and fixed by adhesion or interference fitting is formed along the longitudinal direction in both sides of the inner surface 112 of the heating member 110.

[0008] However, in the related art described above, the curved surface that protrudes toward the center of the heating plate fails to prevent curling of hair ends during hair straightening.

[0009] In addition, in the related art, although the curved structure of the heating plate 100 allows smooth sliding of hair, heat of the heating member 110 is not uniformly transferred during an initial heating stage.Disclosure Technical Problem

[0010] Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and an objective of the present disclosure is to provide a heating plate for a hair iron, the heating plate being configured such that a ceramic heating plate having a center portion provided with a flat portion and having rounded spaced portions provided on both left and right sides of the flat portion, a heat diffusion plate provided on an upper inner surface of the ceramic heating plate, and a ceramic heater provided on an upper portion of the heat diffusion plate are arranged in a stacked configuration, and the heating plate being configured such that an entire surface of the ceramic heating plate is heated to a predetermined temperature so that forming hair curls is facilitated while preventing crease marks from being left on the hair ends according to the configuration of the flat portion and the spaced portions.Technical Solution

[0011] In order to achieve the above objectives, according to the present disclosure, there is provided a heating plate for a hair iron used to form curls in hair by using a heated plate, the heating plate including: a ceramic heating plate having a lower surface provided with a contact end configured to be brought into contact with the hair directly and having an upper surface which corresponds to the contact end and which has both side walls that protrude upward so that a coupling end is provided; a heat diffusion plate fitted onto an upper surface of the coupling end; and a ceramic heater in close contact with an upper portion of the heat diffusion plate.

[0012] The contact end may include a flat portion configured to be brought into contact with the hair directly and a pair of spaced portions that extends upward in a rounded shape from both left and right end portions of the flat portion.

[0013] A thermistor sensor configured to detect a temperature of the ceramic heater and a Kapton tape fixing the thermistor sensor may be provided on a lower surface of one of insulating plates, a locking protrusion that protrudes inward and outward may be provided on each upper end portion of both side walls of the coupling end, and the coupling end may be provided with the plurality of insulating plates configured to prevent heat of the ceramic heater from being conducted upward and may be provided with plate springs configured to be locked on the locking protrusion so that the plate springs are brought into close contact with each upper surface of the insulating plates.

[0014] An upper cover coupled such that the upper cover covers an upper portion of each of the plate springs may be further provided at an upper end portion of the coupling end.

[0015] The heat diffusion plate may be formed of one material selected from an aluminum material or a magnesium material.

[0016] Each of the plate springs may have a pressing surface which is provided at a center thereof and which is in close contact with an upper portion of each of the insulating plates, and may have a fitting surface bent upward at both sides of the pressing surface. Furthermore, inclined ends which areobliquely cut so as to be rotated and coupled when the fitting surface is coupled to the coupling end and which face each other may be provided on the fitting surface.Advantageous Effects

[0017] As described above, the heating plate for the hair iron according to the present disclosure provides the following effects.

[0018] First, since the contact end of the ceramic heating plate configured to be brought into contact with hair directly and to transfer heat is formed as the flat portion and the spaced portions, formation of crease marks on hair during curl forming may be prevented.

[0019] Second, since heat of the ceramic heater is transferred to the heat diffusion plate formed of an aluminum material or a magnesium material having high thermal conductivity, heat rapidly generated at only a specific region of the ceramic heater is dispersed over a wide region by the heat diffusion plate, so that heat is effectively transferred.

[0020] Third, since the heat diffusion plate is coupled to the coupling end of the ceramic heating plate and the ceramic heater is seated on the upper portion of the heat diffusion plate, partial heating of the ceramic heating plate is prevented, and hair may be heated by the ceramic heating plate having uniformly conducted heat, thereby forming excellent curls.

[0021] Fourth, since the plurality of insulating plates and plate springs coupled to the upper portion of the ceramic heating plate are in close contact with the rear surface of the ceramic heater, heat release toward the rear surface of the ceramic heater is prevented, and heat may be uniformly transferred to the heat diffusion plate.Description of Drawings

[0022] FIG. 1 is a view illustrating a heating plate of a hair iron according to the prior art. FIG. 2 is a view illustrating a heating plate for a hair iron according to the present disclosure. FIG. 3 shows a ceramic heating plate according to the present disclosure. FIG. 4 is a view illustrating a heat diffusion plate and a ceramic heater according to the present disclosure. FIG. 5 is a view illustrating insulating plates and plate springs according to the present disclosure. Mode for Invention

[0023] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024] As illustrated in FIG. 2 to FIG. 5, a heating plate for a hair iron according to the present disclosure is a heating plate used for forming curls of hair by using a heated plate, and includes: a ceramic heating plate 10 having a lower surface provided with a contact end 11 configured to be brought into contact with hair directly and having an upper surfacewhich corresponds to the contact end 11 that is provided with a coupling end 12 having both side walls that protrude upward; a heat diffusion plate 20 fitted onto an upper surface of the coupling end 12; and a ceramic heater 30 in close contact with an upper portion of the heat diffusion plate 20.

[0025] Here, the hair iron includes a pair of ceramic heating plates 10 which is coupled to a handle of the hair iron and which is arranged at upper and lower positions. Furthermore, when the hair iron is used, hair is inserted between the contact ends 11 of the ceramic heating plates 10, the ceramic heating plates 10 are brought into close contact with an outer surface of hair, and then the ceramic heating plates 10 are slid while a user holds the handle, thereby forming curls in the hair. In the ceramic heater 30, when external power is applied to the ceramic heater 30, a specific region of the ceramic heater 30 is heated, and there is a limitation in expanding heat over a wide area, so that the heat diffusion plate 20 is used for transferring heat through the heat diffusion plate 20 to the ceramic heating plate 10.

[0026] Meanwhile, the contact end 11 includes a flat portion 11a configured to be brought into contact with hair directly and a pair of spaced portions 11b which extends upward in rounded shapes from both left and right ends of the flat portion 11a, so that crease marksare prevented from remaining on hair during curl formation.

[0027] Here, the flat portion 11a is formed such that a left-right width of the flat portion 11a is at least twice larger than a left-right width of each of the spaced portions 11b. That is, the left-right width of the flat portion 11a is larger than a sum of widths of both spaced portions 11b.

[0028] In addition, a locking protrusion 12a that protrudes inward and outward is provided at each upper end of both side walls of the coupling end 12. Furthermore, the coupling end 12 includes a plurality of insulating plates 13 preventing heat of the ceramic heater 30 from being conducted upward, and includes a plurality of plate springs 14 locked on the locking protrusion 12a so that the plurality of plate springs 14 is in close contact with upper surfaces of the plurality of insulating plates 13, so that the ceramic heater 30 is in close contact with a rear surface of the heat diffusion plate 20 with uniform pressure. Here, the plurality of insulating plates 13 is formed of a silicone material.

[0029] In addition, a thermistor sensor (not illustrated) configured to detect a temperature of the ceramic heater 30 and a Kapton tape fixing the thermistor sensor are provided on a lower surface of one of the insulating plates 13. Here, a silicone grease may be additionally applied on an upper surface of the thermistor sensor, the silicone grease increases heat transfer characteristics such that heat conducted from the ceramic heater 30 is efficiently transferred to the thermistor sensor, and the Kapton tape has excellent heat resistance characteristic stable at a high temperature.

[0030] An upper cover 15 coupled to surround upper portions of the plate springs 14 is further provided at an upper end portion of the coupling end 12, so that heat is prevented from being transferred upward of the coupling end 12.

[0031] Meanwhile, the heat diffusion plate 20 is formed of one material selected from an aluminum material or a magnesium material having high thermal conductivity, so that heat transferred from the ceramic heater 30 is uniformly conducted and transferred to the ceramic heating plate 10 over an entire area.

[0032] Meanwhile, each plate spring 14 includes a pressing surface 14a which is provided at a center of the plate spring 14 and which is in close contact with the upper surface of the insulating plate 13, and includes a fitting surface 14b bent upward at both sides of the pressing surface 14a. Furthermore, inclined ends 141 which areobliquely cut so as to be rotated and coupled when the fitting surface 14b is coupled to the coupling end 12 and which face each other are provided on the fitting surface 14b, thereby facilitating assembly of the heating plate.

[0033] An operation of the heating plate for the hair iron according to the present disclosure having the configuration described above will be described below.

[0034] As illustrated in FIG. 2 to FIG. 5, the heating plate for the hair iron according to the present disclosure is assembled such that the heat diffusion plate 20 and the ceramic heater 30 are sequentially coupled to the coupling end 12 provided at the upper portion of the ceramic heating plate 10 so that heat is uniformly transferred to the ceramic heating plate 10. In addition, the contact end 11 that is the lower surface of the ceramic heating plate 10 is a surface configured to be brought into contact with hair and to transfer heat. In order to prevent crease marks caused by the shape of the ceramic heating plate 10 from remaining on hair, the flat portion 11a is provided at the center of the contact end 11 and the rounded spaced portions 11b are provided at both sides of the flat portion 11a, thereby preventing unintended marks from being left by the contact end 11 of the ceramic heating plate 10 during formation of hair curls.

[0035] In addition, the locking protrusion 12a of the coupling end 12 extends in a longitudinal direction so that the plate springs 14 are locked and secured in the locking protrusion 12a.

[0036] That is, when the plate springs 14 are coupled to the locking protrusions 12a, each upper portion of the plurality of insulating plates 13 provided on the upper portion of the ceramic heater 30 is in close contact with the plurality of plate springs 14.

[0037] Here, the inclined ends 141 of each plate spring 14 slide along each distal end of the coupling end 12 and are introduced inward so that the fitting surfaces 14b are locked onto each inner lower surface of the coupling end 12.

[0038] Meanwhile, since the heat diffusion plate 20 is formed of one material selected from an aluminum material or a magnesium material having high thermal conductivity, the heat diffusion plate 20 receives and transfers heat of the ceramic heater 30 while being in close contact with an entire area of the ceramic heating plate 10, thereby maintaining a temperature of the ceramic heating plate 10 that is in close contact with hair uniformly across the entire area.

[0039] Accordingly, in the heating plate for the hair iron according to the present disclosure, the flat portion 11a and the spaced portions 11b of the ceramic heating plate 10 in which heat is uniformly conducted are brought into contact with hair, so that the user can form curls without leaving marks on hair.

[0040] The present disclosure is not limited to the specific preferred embodiments described above, and any person of ordinary skill in the art to which the present disclosure pertains may implement various modifications without departing from the gist of the present disclosure claimed in the claims. Furthermore, it is obvious that such modifications will fall within the scope of the description of the claims.

Examples

Embodiment Construction

[0023]Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024]As illustrated in FIG. 2 to FIG. 5, a heating plate for a hair iron according to the present disclosure is a heating plate used for forming curls of hair by using a heated plate, and includes: a ceramic heating plate 10 having a lower surface provided with a contact end 11 configured to be brought into contact with hair directly and having an upper surfacewhich corresponds to the contact end 11 that is provided with a coupling end 12 having both side walls that protrude upward; a heat diffusion plate 20 fitted onto an upper surface of the coupling end 12; and a ceramic heater 30 in close contact with an upper portion of the heat diffusion plate 20.

[0025]Here, the hair iron includes a pair of ceramic heating plates 10 which is coupled to a handle of the hair iron and which is arranged at upper and lower positions. Furthermore, when the hair iron is ...

Technical Field

[0001] The present disclosure relates to a heating plate for a hair iron. More particularly, the present disclosure relates to a heating plate for a hair iron, the heating plate being configured such that a flat portion is formed at a center portion of a ceramic heating plate that is configured to be brought into contact with hair directly and rounded spaced portions are formed on both side portions of the flat portion so that creasemarksare prevented from remaining on hair during use of the hair iron, and the heating plate being configured such that a ceramic heater which is a heat source is provided inside the ceramic heating plate and a heat diffusion plate configured to disperse and transfer heat from the ceramic heater is coupled to the ceramic heater.Background Art

[0002] Generally, a hair iron is used to straighten or roll hair into a desired shape. An electric heater is embedded inside heating plates facing each other vertically and the heating plates generate heat when power is supplied to the electric heater.

[0003] Accordingly, various technologies have been proposed to allow efficient deformation of hair shape while preventing heat of the electric heater from being transferred to the outside of the heating plates or preventing heat from being concentrated on specific regions of the heating plates so as to avoid damage to hair.

[0004] As related conventional technology, Korean Utility Model No. 20-0491139 (February 19, 2020) discloses a "HEATING PLATE STRUCTURE FOR HAIR IRON".

[0005] As illustrated in FIG. 1, the related art relates to a heating plate 100 of a hair iron, the heating plate 100 being mounted respectively at a front lower portion of an upper body 10 and a front upper portion of a lower body 20 and being configured to be in contact with each other during hair straightening.

[0006] The heating plate 100 includes: a rectangular heating member 110 which is formed of one material selected from a ceramic material, a mineral material having excellent thermal conductivity, and a carbon material and which has an outer surface 111 contacting the opposing heating plate 100 formed as a curved surface protruding convexly toward a center thereof and has an inner surface 112 formed as a flat surface; and a supporting means S provided at both sides of the inner surface 112 of the heating member 110 and configured to support a plate spring 40 and a cover 50 that are configured to bring a heater 30 into close contact with the inner surface 112.

[0007] The supporting means S has a "T"-shaped configuration integrally including a vertical piece S1 arranged along a longitudinal direction of the inner surface 112 of the heating member 110 and locking pieces S2 and S3 bent at right angles inward and outward, respectively, at a first end of the vertical piece S1. Furthermore, a fixing groove 112a into which a second end of the vertical piece S1 is inserted and fixed by adhesion or interference fitting is formed along the longitudinal direction in both sides of the inner surface 112 of the heating member 110.

[0008] However, in the related art described above, the curved surface that protrudes toward the center of the heating plate fails to prevent curling of hair ends during hair straightening.

[0009] In addition, in the related art, although the curved structure of the heating plate 100 allows smooth sliding of hair, heat of the heating member 110 is not uniformly transferred during an initial heating stage.Disclosure Technical Problem

[0010] Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and an objective of the present disclosure is to provide a heating plate for a hair iron, the heating plate being configured such that a ceramic heating plate having a center portion provided with a flat portion and having rounded spaced portions provided on both left and right sides of the flat portion, a heat diffusion plate provided on an upper inner surface of the ceramic heating plate, and a ceramic heater provided on an upper portion of the heat diffusion plate are arranged in a stacked configuration, and the heating plate being configured such that an entire surface of the ceramic heating plate is heated to a predetermined temperature so that forming hair curls is facilitated while preventing crease marks from being left on the hair ends according to the configuration of the flat portion and the spaced portions.Technical Solution

[0011] In order to achieve the above objectives, according to the present disclosure, there is provided a heating plate for a hair iron used to form curls in hair by using a heated plate, the heating plate including: a ceramic heating plate having a lower surface provided with a contact end configured to be brought into contact with the hair directly and having an upper surface which corresponds to the contact end and which has both side walls that protrude upward so that a coupling end is provided; a heat diffusion plate fitted onto an upper surface of the coupling end; and a ceramic heater in close contact with an upper portion of the heat diffusion plate.

[0012] The contact end may include a flat portion configured to be brought into contact with the hair directly and a pair of spaced portions that extends upward in a rounded shape from both left and right end portions of the flat portion.

[0013] A thermistor sensor configured to detect a temperature of the ceramic heater and a Kapton tape fixing the thermistor sensor may be provided on a lower surface of one of insulating plates, a locking protrusion that protrudes inward and outward may be provided on each upper end portion of both side walls of the coupling end, and the coupling end may be provided with the plurality of insulating plates configured to prevent heat of the ceramic heater from being conducted upward and may be provided with plate springs configured to be locked on the locking protrusion so that the plate springs are brought into close contact with each upper surface of the insulating plates.

[0014] An upper cover coupled such that the upper cover covers an upper portion of each of the plate springs may be further provided at an upper end portion of the coupling end.

[0015] The heat diffusion plate may be formed of one material selected from an aluminum material or a magnesium material.

[0016] Each of the plate springs may have a pressing surface which is provided at a center thereof and which is in close contact with an upper portion of each of the insulating plates, and may have a fitting surface bent upward at both sides of the pressing surface. Furthermore, inclined ends which areobliquely cut so as to be rotated and coupled when the fitting surface is coupled to the coupling end and which face each other may be provided on the fitting surface.Advantageous Effects

[0017] As described above, the heating plate for the hair iron according to the present disclosure provides the following effects.

[0018] First, since the contact end of the ceramic heating plate configured to be brought into contact with hair directly and to transfer heat is formed as the flat portion and the spaced portions, formation of crease marks on hair during curl forming may be prevented.

[0019] Second, since heat of the ceramic heater is transferred to the heat diffusion plate formed of an aluminum material or a magnesium material having high thermal conductivity, heat rapidly generated at only a specific region of the ceramic heater is dispersed over a wide region by the heat diffusion plate, so that heat is effectively transferred.

[0020] Third, since the heat diffusion plate is coupled to the coupling end of the ceramic heating plate and the ceramic heater is seated on the upper portion of the heat diffusion plate, partial heating of the ceramic heating plate is prevented, and hair may be heated by the ceramic heating plate having uniformly conducted heat, thereby forming excellent curls.

[0021] Fourth, since the plurality of insulating plates and plate springs coupled to the upper portion of the ceramic heating plate are in close contact with the rear surface of the ceramic heater, heat release toward the rear surface of the ceramic heater is prevented, and heat may be uniformly transferred to the heat diffusion plate.Description of Drawings

[0022] FIG. 1 is a view illustrating a heating plate of a hair iron according to the prior art. FIG. 2 is a view illustrating a heating plate for a hair iron according to the present disclosure. FIG. 3 shows a ceramic heating plate according to the present disclosure. FIG. 4 is a view illustrating a heat diffusion plate and a ceramic heater according to the present disclosure. FIG. 5 is a view illustrating insulating plates and plate springs according to the present disclosure. Mode for Invention

[0023] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024] As illustrated in FIG. 2 to FIG. 5, a heating plate for a hair iron according to the present disclosure is a heating plate used for forming curls of hair by using a heated plate, and includes: a ceramic heating plate 10 having a lower surface provided with a contact end 11 configured to be brought into contact with hair directly and having an upper surfacewhich corresponds to the contact end 11 that is provided with a coupling end 12 having both side walls that protrude upward; a heat diffusion plate 20 fitted onto an upper surface of the coupling end 12; and a ceramic heater 30 in close contact with an upper portion of the heat diffusion plate 20.

[0025] Here, the hair iron includes a pair of ceramic heating plates 10 which is coupled to a handle of the hair iron and which is arranged at upper and lower positions. Furthermore, when the hair iron is used, hair is inserted between the contact ends 11 of the ceramic heating plates 10, the ceramic heating plates 10 are brought into close contact with an outer surface of hair, and then the ceramic heating plates 10 are slid while a user holds the handle, thereby forming curls in the hair. In the ceramic heater 30, when external power is applied to the ceramic heater 30, a specific region of the ceramic heater 30 is heated, and there is a limitation in expanding heat over a wide area, so that the heat diffusion plate 20 is used for transferring heat through the heat diffusion plate 20 to the ceramic heating plate 10.

[0026] Meanwhile, the contact end 11 includes a flat portion 11a configured to be brought into contact with hair directly and a pair of spaced portions 11b which extends upward in rounded shapes from both left and right ends of the flat portion 11a, so that crease marksare prevented from remaining on hair during curl formation.

[0027] Here, the flat portion 11a is formed such that a left-right width of the flat portion 11a is at least twice larger than a left-right width of each of the spaced portions 11b. That is, the left-right width of the flat portion 11a is larger than a sum of widths of both spaced portions 11b.

[0028] In addition, a locking protrusion 12a that protrudes inward and outward is provided at each upper end of both side walls of the coupling end 12. Furthermore, the coupling end 12 includes a plurality of insulating plates 13 preventing heat of the ceramic heater 30 from being conducted upward, and includes a plurality of plate springs 14 locked on the locking protrusion 12a so that the plurality of plate springs 14 is in close contact with upper surfaces of the plurality of insulating plates 13, so that the ceramic heater 30 is in close contact with a rear surface of the heat diffusion plate 20 with uniform pressure. Here, the plurality of insulating plates 13 is formed of a silicone material.

[0029] In addition, a thermistor sensor (not illustrated) configured to detect a temperature of the ceramic heater 30 and a Kapton tape fixing the thermistor sensor are provided on a lower surface of one of the insulating plates 13. Here, a silicone grease may be additionally applied on an upper surface of the thermistor sensor, the silicone grease increases heat transfer characteristics such that heat conducted from the ceramic heater 30 is efficiently transferred to the thermistor sensor, and the Kapton tape has excellent heat resistance characteristic stable at a high temperature.

[0030] An upper cover 15 coupled to surround upper portions of the plate springs 14 is further provided at an upper end portion of the coupling end 12, so that heat is prevented from being transferred upward of the coupling end 12.

[0031] Meanwhile, the heat diffusion plate 20 is formed of one material selected from an aluminum material or a magnesium material having high thermal conductivity, so that heat transferred from the ceramic heater 30 is uniformly conducted and transferred to the ceramic heating plate 10 over an entire area.

[0032] Meanwhile, each plate spring 14 includes a pressing surface 14a which is provided at a center of the plate spring 14 and which is in close contact with the upper surface of the insulating plate 13, and includes a fitting surface 14b bent upward at both sides of the pressing surface 14a. Furthermore, inclined ends 141 which areobliquely cut so as to be rotated and coupled when the fitting surface 14b is coupled to the coupling end 12 and which face each other are provided on the fitting surface 14b, thereby facilitating assembly of the heating plate.

[0033] An operation of the heating plate for the hair iron according to the present disclosure having the configuration described above will be described below.

[0034] As illustrated in FIG. 2 to FIG. 5, the heating plate for the hair iron according to the present disclosure is assembled such that the heat diffusion plate 20 and the ceramic heater 30 are sequentially coupled to the coupling end 12 provided at the upper portion of the ceramic heating plate 10 so that heat is uniformly transferred to the ceramic heating plate 10. In addition, the contact end 11 that is the lower surface of the ceramic heating plate 10 is a surface configured to be brought into contact with hair and to transfer heat. In order to prevent crease marks caused by the shape of the ceramic heating plate 10 from remaining on hair, the flat portion 11a is provided at the center of the contact end 11 and the rounded spaced portions 11b are provided at both sides of the flat portion 11a, thereby preventing unintended marks from being left by the contact end 11 of the ceramic heating plate 10 during formation of hair curls.

[0035] In addition, the locking protrusion 12a of the coupling end 12 extends in a longitudinal direction so that the plate springs 14 are locked and secured in the locking protrusion 12a.

[0036] That is, when the plate springs 14 are coupled to the locking protrusions 12a, each upper portion of the plurality of insulating plates 13 provided on the upper portion of the ceramic heater 30 is in close contact with the plurality of plate springs 14.

[0037] Here, the inclined ends 141 of each plate spring 14 slide along each distal end of the coupling end 12 and are introduced inward so that the fitting surfaces 14b are locked onto each inner lower surface of the coupling end 12.

[0038] Meanwhile, since the heat diffusion plate 20 is formed of one material selected from an aluminum material or a magnesium material having high thermal conductivity, the heat diffusion plate 20 receives and transfers heat of the ceramic heater 30 while being in close contact with an entire area of the ceramic heating plate 10, thereby maintaining a temperature of the ceramic heating plate 10 that is in close contact with hair uniformly across the entire area.

[0039] Accordingly, in the heating plate for the hair iron according to the present disclosure, the flat portion 11a and the spaced portions 11b of the ceramic heating plate 10 in which heat is uniformly conducted are brought into contact with hair, so that the user can form curls without leaving marks on hair.

[0040] The present disclosure is not limited to the specific preferred embodiments described above, and any person of ordinary skill in the art to which the present disclosure pertains may implement various modifications without departing from the gist of the present disclosure claimed in the claims. Furthermore, it is obvious that such modifications will fall within the scope of the description of the claims.

Examples

Embodiment Construction

[0023]Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024]As illustrated in FIG. 2 to FIG. 5, a heating plate for a hair iron according to the present disclosure is a heating plate used for forming curls of hair by using a heated plate, and includes: a ceramic heating plate 10 having a lower surface provided with a contact end 11 configured to be brought into contact with hair directly and having an upper surfacewhich corresponds to the contact end 11 that is provided with a coupling end 12 having both side walls that protrude upward; a heat diffusion plate 20 fitted onto an upper surface of the coupling end 12; and a ceramic heater 30 in close contact with an upper portion of the heat diffusion plate 20.

[0025]Here, the hair iron includes a pair of ceramic heating plates 10 which is coupled to a handle of the hair iron and which is arranged at upper and lower positions. Furthermore, when the hair iron is ...

Claims

1. A heating plate for a hair iron used to form curls in hair by using a heated plate, the heating plate comprising: a ceramic heating plate (10) having a lower surface provided with a contact end (11) configured to be brought into contact with the hair directly and having an upper surface which corresponds to the contact end (11) and which has both side walls that protrude upward so that a coupling end 12 is provided; a heat diffusion plate (20) fitted onto an upper surface of the coupling end (12); and a ceramic heater (30) in close contact with an upper portion of the heat diffusion plate (20), wherein the contact end (11) comprises a flat portion (11a) configured to be brought into contact with the hair directly and a pair of spaced portions (11b) that extends upward in a rounded shape from both left and right end portions of the flat portion (11a).

2. The heating plate of claim 1, wherein a locking protrusion (12a) that protrudes inward and outward is provided at each upper end portion of both side walls of the coupling end (12), and wherein the coupling end (12) is provided with a plurality of insulating plates (13) configured to prevent heat of the ceramic heater (30) from being conducted upward, and a plurality of plate springs (14) locked on the locking protrusion (12a) so that the insulating plates (13) are in close contact with an upper surface of the ceramic heater (30).

3. The heating plate of claim 2, wherein a thermistor sensor configured to detect a temperature of the ceramic heater (30) and a Kapton tape fixing the thermistor sensor are provided on a lower surface of one of the insulating plates (13), and wherein an upper cover (15) coupled such that the upper cover (15) covers an upper portion of each of the plate springs (14) is further provided at an upper end portion of the coupling end (12).

4. The heating plate of claim 1, wherein the heat diffusion plate (20) is formed of one material selected from an aluminum material or a magnesium material.

5. The heating plate of claim 2, wherein each of the plate springs (14) has a pressing surface (14a) which is provided at a center thereof and which is in close contact with an upper portion of each of the insulating plates (13), and has a fitting surface (14b) bent upward at both sides of the pressing surface (14a), and wherein inclined ends (141) which are obliquely cut so as to be rotated and coupled when the fitting surface (14b) is coupled to the coupling end (12) and which face each other are provided on the fitting surface (14b).

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