Hairbrush

Abstract

This hairbrush allows hair to be efficiently caught by the bristles, thereby increasing the hair setting power. A hairbrush having a head portion (81), wherein a setting portion (40, 50, 80) is arranged on a first surface of the head portion (81), the setting portion has a plurality of bristles (20, 21, 22, 41, 41β, 42, 52) extending from the surface of the setting portion (40, 50, 80), the centers of cross sections of the bristles on the surface of the setting portion are geometrically arranged on the first surface, the geometric arrangement follows a portion of a spiral on the first surface, and at least two of the plurality of bristles are first bristles made of a heat conductor that transfers heat to the hair.

Description

Technical Field

[0001] The present invention relates to a hairbrush, particularly an electric hairbrush for setting hair.

Background Art

[0002] In conventional hair styling, various methods have been used, such as hair irons, hairbrushes, and the combined use of brushes and hair dryers. For example, with a hair iron, first the hair is combed, and then the hair is sandwiched and set with the iron.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional technologies as described above, for example, a hairbrush can set hair at once, but there is a problem that if the hair cannot be caught well, heat is difficult to transfer to the hair. On the other hand, if the number of pins of the brush is increased too much, there is a problem that the hair gets tangled or does not fall out, resulting in greater damage to the hair.

[0005] The present invention has been made in view of the above problems, and an object thereof is to efficiently catch hair with bristles and enhance the hair setting power.

Means for Solving the Problems

[0006] In order to solve the above problems, a hairbrush according to one aspect of the present invention is a hairbrush provided with a head portion, and a first surface of the head portion Face side is provided with a plurality of bristles extending therefrom, The above-mentioned bristles Breaking The center of the surface is the Of the head part On the first surface, it is arranged along a part of a spiral that moves away from the center as it rotates, and a part of the spiral is in the y direction in which the head portion extends on the first surface When the direction component of continues to increase The x direction perpendicular to the y direction on the first surface Whether the direction component of continues to increase, or whether the direction component in the y direction continues to increase and the direction component in the x direction continues to decrease is a part. A hairbrush according to an aspect of the present invention includes a grip portion that can be gripped by hand and a head portion connected to one end in the longitudinal direction of the grip portion. The hairbrush includes a plurality of bristles extending from a first surface of the head portion. The centers of the cross-sections of the plurality of bristles on the first surface are arranged along a part of a spiral that moves away from the center as it rotates on the first surface. A part of the spiral is a part that determines whether the direction component in the x direction perpendicular to the y direction on the first surface continues to increase when the direction component in the y direction in which the head portion extends on the first surface continues to increase, or whether the direction component in the x direction continues to decrease when the direction component in the y direction continues to increase. A hairbrush according to an aspect of the present invention is a hairbrush including a head portion. The hairbrush includes a plurality of bristles extending from a first surface of the head portion. The centers of the cross-sections of the bristles are arranged along a part of a spiral that moves away from the center as it rotates on the first surface of the head portion. A part of the spiral is a part that determines whether the direction component in a second direction perpendicular to the direction in which the bristles extend and perpendicular to the first direction continues to increase when the direction component in a first direction perpendicular to the direction in which the bristles extend continues to increase, or whether the direction component in the second direction continues to decrease when the direction component in the first direction continues to increase.

Advantages of the Invention

[0007] According to one aspect of the present invention, hair can be efficiently caught by the bristles, and the setting force of the hair can be increased.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

MODE FOR CARRYING OUT THE INVENTION

[0009] Schematic views of the arrangement modes 100 and 110 of the bristles of a conventional hairbrush are shown in FIG. 1. In FIG. 1, although the appearance of the hairbrush is not shown, only the arrangement of the bristles as seen from the direction (z-axis direction perpendicular to the xy plane) facing the brush surface (xy plane) is schematically shown. As shown in FIG. 1(a), in a general hairbrush, the bristles 10 are arranged in a grid pattern. In this structure, hair slips through in a certain direction 101 in the xy plane. In another prior art, as shown in FIG. 1(b), the bristles 11 are arranged alternately (Patent Document 1).

[0010] In Patent Document 1 (Utility Model No. 3206808), a structure combining a brush and a hair iron has been proposed. In the brush according to Patent Document 1, it is convenient because there is no need to comb the hair once, but the arrangement of the bristles (pins) in the xy plane is in series with respect to the y-axis direction (FIG. 3(a)). Although this invention is for straight hair, with such an arrangement structure, hair will slip through in a certain direction 111 in the xy plane. Therefore, it is necessary to increase the number of bristles or set the size of each bristle to be large. In Patent Document 1, there is almost no gap between the bristles (FIG. 3(a)), and it is considered that the hair may be damaged by strong friction.

[0011] Also, in Patent Document 2, bristles adapted to the curvature of a human head have been proposed, and it is also conceivable to design a brush following this shape. However, although it may seem to fit well on the head, for example, at a part where the hair is long and away from the head, the usability rather deteriorates. In Patent Document 3, a dryer with an increased grip force by animal hair has been proposed, but the heat cannot be evenly and efficiently transmitted.

[0012] There is a need for a hairbrush for a set that can increase the gripping power of hair and efficiently transfer heat to the hair in a short time.

[0013] 〔Embodiment 1〕 Hereinafter, an embodiment of the present invention will be described in detail.

[0014] The hairbrush according to the present invention is a hairbrush having a head portion for combing hair, and the head portion has a setting portion for setting hair. In a preferred embodiment, the setting portion is disposed on one surface of the head portion. The setting portion is composed of a heat transfer body that transfers heat to the hair, and has a plurality of pin shapes (bristles) that stand upright perpendicular to the surface (xy plane) (brush surface) of the setting portion in the (z-axis direction).

[0015] FIG. 2 is a schematic view showing the geometric arrangement of the bristles of the hairbrush according to the present invention. FIGS. 2(a) to (c) do not show the appearance of the hairbrush, but schematically show only the geometric arrangement of the bristles 20, 21, 22 as viewed from the direction facing the brush surface (z-axis direction perpendicular to the xy plane).

[0016] In a preferred embodiment of the present invention, the centers of each of the pin-shaped bristles 20, 21, 22 in the xy plane (see FIG. 4(b)(i)) are arranged along a certain geometric shape. The preferred geometric shape is a two-dimensional curve, more preferably a spiral. As used herein, a spiral refers to a spiral two-dimensional curve that moves away from the center as it turns. In a preferred embodiment of the present invention, the bristles are provided along a part of the spiral in the xy plane.

[0017] Here, "a part of the spiral" conceptually means a part of the spiral included in the region constituting the set portion in the xy plane that extends. The xy plane coordinates constituting the set portion preferably include a spiral configured with a pitch such that a plurality of tracks of the spiral are generated. For example, in FIG. 2(a), it can be confirmed that at least 11 tracks 202 of the spiral are generated in the xy plane coordinates constituting the set portion. In FIG. 2(b), it can be confirmed that at least 11 tracks 212 of the spiral are generated in the xy plane coordinates constituting the set portion. In FIG. 2(c), it can be confirmed that at least 12 tracks 222 of the spiral are generated in the xy plane coordinates constituting the set portion, and further, at least 16 tracks 223 of the spiral are generated. The mode in which the bristles are arranged along a part of the spiral in the shape of a spiral on the xy plane is also referred to as "spiral arrangement" or "arranged in a spiral shape". The mode of the spiral is not limited to an algebraic spiral such as an Archimedes spiral, and a logarithmic spiral, a Fibonacci spiral, etc. can be adopted. Various parameters such as the initial radius and pitch of the spiral can be arbitrarily set.

[0018] In a preferred embodiment, an Archimedes spiral (algebraic spiral) that can be described as r = aθ in polar coordinates can be adopted. For example, in track 223 of FIG. 2(c), when the parameter a is 0.017 and θ = t×360, 16 tracks where t is from 20 to 35 are generated. In track 222 of FIG. 2(c), when the parameter a is 0.02 and θ = -t×360, 12 tracks where t is from 36 to 47 are generated.

[0019] In the configuration according to the present invention in which the bristles 20, 21, 22 are arranged in a spiral shape in the xy plane, the metal pins (bristles) 20, 21, 22 are evenly arranged. As a result, regardless of the location or direction 201, 211 where the hair enters, the metal pins (bristles) 20, 21, 22 surely contact the hair trying to slip through (see FIGS. 2(a) and (b)). As a result, the hair is caught by the metal pins (bristles) 20, 21, 22, and the setting force of the hair can be increased.

[0020] As shown in FIGS. 2(a) and 2(b), the direction of the spiral may be the direction of track 202 or the direction of track 212. Also, as shown in FIG. 2(c), it is also preferable to arrange the bristles 22 at the intersection formed by the combination of the tracks 222 and 223 of the spirals in two directions. Since the hairbrush is used for the entire hair and right-handed and left-handed users are assumed, the direction in which the hair progresses cannot be specified depending on the usage situation. With the configuration shown in FIG. 2(c), no matter from which direction the hair enters, it can be caught by the bristles 22, and the setting force of the hair can be improved. A plurality of pins may be arranged along the first track in one spiral, and the other plurality of pins may be arranged along the second track (the second track is adjacent to the first track) in the spiral.

[0021] FIG. 3 shows a comparison of the arrangement modes of the bristles between the prior art and the present invention. FIG. 3(a) schematically shows the intervals between the bristles of the prior art disclosed in Patent Document 1. FIG. 3(b) schematically shows the intervals between the bristles according to the present invention. The cross-sectional shape of the bristles shown in FIG. 3(b) in the xy plane is preferably an elliptical shape (see FIG. 4(b)(i)). In FIG. 4(b)(i), the axis parallel to the x-axis passing through the center is the major axis, and the axis parallel to the y-axis passing through the center is the minor axis. When the major axis and the minor axis are equal (see FIG. 4(b)(ii)), the cross-sectional shape of the bristles becomes circular. In this specification, the circular shape is one aspect of the elliptical shape.

[0022] When brushing with a hairbrush, hair tries to pass through the gaps as much as possible. For example, in Patent Document 1 and the like, when the hairbrush moves in a certain direction (opposite to 111), most of the hair may slip through. In such a situation, the bristles 11 of the hairbrush cannot catch the hair, and heat cannot be transferred to the hair through the bristles 11, so the hair cannot be set in the desired style. In order to suppress the slipping of the hair, Patent Document 1 has made improvements such as setting the thickness of the heat transfer pins thicker or increasing the number of heat transfer pins, and increasing the density of the bristles 11. However, if the density of the metal bristles is increased arbitrarily, as shown in Fig. 3(a), the gap in the y-axis direction between the bristles 31(a) and 31(b) becomes narrower. As a result, the friction with the hair becomes stronger, the hair is damaged, and it becomes difficult for the hair to enter between the pins.

[0023] On the other hand, it can be confirmed that the gap in the y-axis direction between the spirally arranged bristles 41(a) and 41(b) according to the present invention does not become as narrow as the gap in the y-axis direction between 31(a) and 31(b) (Fig. 3(b)). With such a configuration, compared with the conventional bristle arrangement, it is possible to surely set the hair while reducing the damage to the hair.

[0024] 〔Embodiment 2〕 Another embodiment of the present invention will be described below. For the sake of convenience of explanation, members having the same functions as the members described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.

[0025] FIG. 4 schematically shows the arrangement of bristles according to Embodiment 2. FIG. 4(a) shows a front view of the set portion in which the bristles 41 and 42 are arranged on the spiral track 202 on the set portion 40 (xy plane). FIG. 4(b)(i) shows the cross-sectional shape of the bristle 41 in the xy plane, and FIG. 4(b)(ii) shows the cross-sectional shape of the bristle 42 in the xy plane. The bristles 41 and 42 are preferably both heat transfer pins made of a heat transfer body. FIG. 4(c) shows a perspective view of the set portion shown in FIG. 4(a).

[0026] In the hairbrush according to Embodiment 2, the set portion 40 has a bristle 42 that is narrower than the bristle 41, and the bristle 42 is also preferably provided along a part of the spiral. In a preferred embodiment, the cross-sectional shape of the bristle 42 in the xy plane is preferably circular. In a preferred embodiment, each center (see FIG. 4(b)(ii)) of the bristle 42 in the xy plane is provided along a part of the spiral (see FIG. 4(a)).

[0027] As shown in FIGS. 4(a) and 4(c), the bristle 42 is preferably arranged along the y-axis direction at the short-side end of the set portion 40. With such a configuration, at the short-side end of the set portion 40, the interval in the y-axis direction between the bristles can be narrowed. Since hair has the property of trying to pass through gaps, such a configuration can provide a location where hair easily enters between the bristles.

[0028] With such a configuration, it is possible to improve the setting force by the spiral arrangement, improve the ease of hair entry, and improve the balance of the effects.

[0029] A specific example of attaching the set portion made of a heat transfer body to the hairbrush body will be described below.

[0030] Fig. 8(b) shows an external schematic view of an example of a hairbrush with a built-in heater (also referred to as a hairbrush iron) according to the present invention. The hairbrush 810 includes a gripping portion 84 as a portion that a user holds by hand, a head portion 81 connected to a first end of the gripping portion 84, and a heat transfer body disposed within the head portion 81. In a preferred embodiment, the gripping portion 84 and the head portion 81 exhibit a substantially linear appearance during use. In other preferred embodiments, the gripping portion 84 and the head portion 81 may exhibit an appearance in which they are connected at a predetermined angle. The head portion 81 has a heat transfer body that transfers heat to hair, and the heat transfer body has a plurality of rising pin shapes (bristles). Also in a preferred embodiment, the head portion 81 includes a rectifying plate 85. It is preferable that the rectifying plate 85 can align the traveling direction of hair. The heat transfer body preferably has a heater (not shown) mounted inside. The material of the heat transfer body may be any material with good thermal conductivity. For example, it is preferably a metal such as stainless steel or an aluminum alloy. Other metals can also form the heat transfer body, and it is not limited to the above metal materials.

[0031] A power cord 83 is connected to the other end of the gripping portion 84 that faces the first end. It is preferable that there is a heater (not shown) inside the head portion 81. In another embodiment, a configuration in which the heater is included in the gripping portion 84 may be adopted. In a preferred embodiment, the heat transfer body preferably has a heater mounted inside. The material of the heat transfer body only needs to have good thermal conductivity. The shape of the brush surface is preferably planar in the xy plane. In other preferred embodiments, it may be convex or concave in the xz plane.

[0032] In a preferred embodiment, it is preferable that the gripping part 84 is provided with a switch (not shown) and an operation part (not shown). After inserting a plug (not shown) provided at the tip of the power cord 83 into an outlet, the switch (not shown) provided on the gripping part 84 can be pressed. The desired temperature can be set with the operation part (not shown). The operation part is preferably configured such that the temperature of the heater (not shown) can be selected from, for example, 100, 120, 140, 160, 180, and 200°C. Without being limited to these temperatures, in another preferred embodiment, it is preferable that other combinations of set temperatures can be selected.

[0033] After the heater reaches the desired temperature, the gripping part 84 can be held by hand and the head part 81 can be applied to the hair. The heat transfer pins come into contact with the hair and heat is transferred to the hair. When the hair cools naturally, the hair set is completed.

[0034] When the hairbrush iron of the present invention is used with the hair wet, it is also possible to set the hair while drying it with the heated heat transfer pins. After the operation is completed, when the switch is turned off and the power supply is disconnected, the heat generation of the heater stops, and if left alone, the head part 81 cools down to room temperature.

[0035] 〔Embodiment 3〕 Another embodiment of the present invention will be described below. For the sake of convenience of explanation, members having the same functions as those described in the above embodiments are denoted by the same reference numerals, and the description thereof will not be repeated.

[0036] Figs. 5 and 6 schematically show the bristle arrangements according to Embodiment 3. Fig. 5(a) shows a front view of a brush surface in which bristles 41, 42 and holes 51 are arranged on a spiral track 501 on a set part 50 (xy plane). Fig. 5(b) is a front view showing a state in which, in addition to Fig. 5(a), bristles 52 are arranged so as to stand up perpendicular to the xy plane (z-axis direction) in a part of the holes 51. The bristles 52 are preferably made of a resin having a lower thermal conductivity than the heat transfer body.

[0037] In a preferred embodiment, the set portion 50 has a shape that is convexly curved in the z-axis direction in the xz plane. The bristles 41, 42, 52 preferably extend so as to stand vertically in the z-axis direction. In another preferred embodiment, among the cross-sections of the set portion 50 that are convexly curved in the xz plane, the bristles 41, 42, 52 are preferably arranged so as to stand vertically with respect to the tangential direction on the curved surface. It is preferable that the center of the cross-sectional area of the root portions of the bristles 41, 42, 52 on the surface of the curved set portion is arranged on the spiral track 501.

[0038] FIG. 6(a) shows a perspective view of the base portion 53 to which the bristle 52 is connected, together with a perspective view of the set portion 50 shown in FIG. 5(a). FIG. 6(b) shows a perspective view in which the bristle 52 connected to the base portion 53 is attached through the hole 51 from the back surface of the set portion 50.

[0039] The bristle 52 in Embodiment 3 preferably has a circular cross-sectional shape in the xy plane, similar to the bristle 42 in Embodiment 2.

[0040] The resin pins (bristles 52) can prevent the hair that has entered the gap from falling out. For example, by making the tip of the bristle 52 spherical, it becomes a catching portion, and the effect is further enhanced. By making the resin pins (bristles 52) part of a spiral arrangement, the effect can be further enhanced. Also, since it is resin, processing is easy, and the grip force can be adjusted using the surface roughness and the like. The resin pins (bristles 52) may be one, or each may be a tuft of hair.

[0041] 〔Embodiment 4〕 Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as the members described in the above embodiments are given the same reference numerals, and the description thereof will not be repeated.

[0042] FIG. 7 is a schematic side view (yz plane) of the set portion 50 of Embodiment 3. The height of the bristles 41 (heat transfer pins) is preferably set lower than the height of the bristles 52 (resin pins). Similar to Embodiment 3 described above, the bristles 52 (resin pins) are preferably made of a resin having a lower thermal conductivity than the heat transfer pins. The heat transfer pins (bristles 41) are assumed to become overly heat resistant, and if the heat transfer pins come into direct contact with the scalp, the user may feel hot. As shown in FIG. 7, if the resin pins (bristles 52) protrude more than the heat transfer pins (bristles 41), the resin pins (bristles 52) will come into contact with the scalp before the heat transfer pins (bristles 41). Therefore, it is possible to prevent the heat transfer pins (bristles 41) from directly contacting the scalp.

[0043] The set portion 50 is not limited to a flat surface, and may be convex or concave in the xz plane. The material of the resin pins preferably has good moldability and heat resistance.

[0044] In a preferred embodiment, it is preferable to project only the spherical portion of the bristles 52 higher than the height of the heat transfer pins (bristles 41). In such a mode, it is possible to prevent hair from falling out easily and to suppress the heat transfer portion from touching the user.

[0045] 〔Embodiment 5〕 Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiments are denoted by the same reference numerals, and their descriptions will not be repeated.

[0046] FIG. 8(a) is a perspective view of the set portion 80. In FIG. 8, for the sake of clarity, the resin pins (bristles 52) are omitted, and only the heat transfer pins (bristles 41) protruding in the vertical direction (z-axis direction) from the xy plane of the set portion 80 are shown. FIG. 8(b) shows a front view of the hairbrush 810 including the set portion 80, the head portion 81 connected to the head portion 81, the grip portion 84 connected to the grip portion 84, and the power cord 83 connected to the grip portion 84.

[0047] It is preferable that the center of the bristles 41 in the xy plane is provided along a part of a spiral in the xy plane of the setting portion 80. The resin pins (bristles 52) omitted in Fig. 8(a) are preferably arranged to project in the vertical direction (z-axis direction) from the xy plane through the holes 51 of the setting portion 80. In a preferred embodiment, as shown in Fig. 8(b), the bristles 52 are preferably arranged along the y-axis direction at the short-side end of the brush surface.

[0048] In another preferred embodiment, the setting portion 80 has a shape that is convexly curved in the z-axis direction in the xz plane. The bristles 41 and 52 are preferably arranged so as to stand vertically with respect to the tangential direction on the curved surface in the cross section of the convexly curved setting portion 80 in the xz plane. It is preferable that the center of the cross-sectional area of the root portions of the bristles 41 and 52 on the surface of the curved setting portion is arranged on the spiral track.

[0049] In the hairbrush according to Embodiment 5, the bristles 41 (heat transfer pins) preferably consist of two or more types of pins having different heights. Also, in a preferred embodiment, the bristles 41 (heat transfer pins) preferably consist of two or more types of pins having different cross-sectional areas in the xy plane. Here, the height of the bristle refers to the value in the z-axis direction, not the length of the pin itself. Regarding the height of the bristles 41 (heat transfer pins), a lower height makes it easier for hair to enter between the pins. Also, a smaller cross-sectional area of the pins in the xy plane makes it easier for hair to enter between the pins. On the other hand, since the surface area of the heat transfer pin becomes the area that can contact the hair, it is preferable that the surface area of the heat transfer pin is as large as possible.

[0050] In a preferred embodiment, as shown in Fig. 8(a), it is preferable that the heights of the heat transfer pins (bristles 41) are different for each spiral-arranged track. In the embodiment shown in Fig. 8(a), tracks with high and low heat transfer pins (bristles 41) are alternately arranged.

[0051] With such a configuration, it is possible to improve the setting force by the spiral arrangement, improve the ease of hair penetration while ensuring the contact area of the hair, and improve the balance of the effects.

[0052] 〔Embodiment 6〕 Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiments are denoted by the same reference numerals, and the description thereof will not be repeated.

[0053] FIG. 9(b) is a schematic view showing the arrangement of the bristles of the hairbrush according to Embodiment 6. FIG. 9(a) is a schematic view for comparison for explaining the characteristics of the arrangement of the bristles of the hairbrush according to Embodiment 6. In FIG. 9, the appearance of the hairbrush is not shown, and only the arrangement of the bristles 41, 41β as viewed from the direction facing the brush surface (the z-axis direction perpendicular to the xy plane) is schematically shown.

[0054] The bristles 41 arranged on the spiral track 202 shown in FIGS. 9(a) and 9(b) have a circular cross-section in the xy plane having a first axis and a second axis. In a preferred embodiment, it preferably has an elliptical shape having a major axis and a minor axis. The minor axis of each bristle 41 shown in FIG. 9(a) is parallel to the axis (y-axis) in the longitudinal direction of the setting surface.

[0055] Regarding FIG. 9(b), the region along the y-axis at the end in the short direction of the setting surface and the other region (inner region) will be described separately. First, in the inner region other than the end in the short direction, the axes of each bristle 41β are not parallel to each other at least in relation to the adjacent bristles 41β, and the second axes are not parallel to each other either. Overall, the arrangement angles of the bristles 41β are random.

[0056] As described in Embodiment 1, in the hairbrush including the bristles 41 disposed on the spiral track 202 shown in FIG. 9(a), the hair travels in the direction of the traveling direction 201. On the other hand, in the hairbrush including the bristles 41β shown in FIG. 9(b), the hair travels like the traveling direction 201β.

[0057] Next, pay attention to the end along the y-axis in the short direction of the set surface. In a preferred embodiment, with respect to the traveling direction of the hair, the bristles 41β adjacent to each other, like the bristles 41β near the entrance, can be arranged at an angle such that the direction of the adjacent bristles 41β is wider in the intrusion direction and narrower in the exit direction. Thereby, it becomes easy to take in the hair between the adjacent bristles 41β, it becomes difficult to come off, and the gripping force is improved. In another preferred embodiment, with respect to the traveling direction of the hair, the bristles 41β adjacent to each other, like the bristles 41β near the exit, can be arranged at an angle such that the direction of the adjacent bristles 41β is narrower in the intrusion direction and wider in the exit direction. Thereby, the effect that the release of the hair becomes smooth is exhibited.

[0058] When geometrically examining the above arrangement mode, any two adjacent bristles 41β among the bristles 41β arranged at the end in the short direction of the set portion are used as the third bristle and the fourth bristle. The adjacent mode is not limited to the adjacency along one track, and may be the adjacency between different tracks. Examine the difference between the first angle formed between the first axis of the third bristle and the longitudinal axis of the set portion and the second angle formed between the first axis of the fourth bristle and the longitudinal axis of the set portion. It is preferable that the third bristle and the fourth bristle are arranged adjacent to each other at the end in the short direction of the set portion so that the absolute value of the difference between the angles is greater than 0 degrees and less than 90 degrees.

[0059] For example, on the entrance side of the hair advancing direction 201, it is preferable that the major axis of the third bristle is arranged at 120 degrees clockwise from the y-axis, and the major axis of the fourth bristle is arranged at 80 degrees clockwise from the y-axis. In this case, the absolute value of the difference in angles is 40 degrees. On the other hand, on the exit side of the hair advancing direction 201, it is preferable that the major axis of the third bristle is arranged at 60 degrees clockwise from the y-axis, and the major axis of the fourth bristle is arranged at 80 degrees clockwise from the y-axis. In this case, the absolute value of the difference in angles is 20 degrees.

[0060] 〔Embodiment 7〕 Another embodiment of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

[0061] FIG. 10 shows a schematic view of a brush according to the present invention. FIG. 10(a) shows an overall perspective view of the brush according to the present invention. FIG. 10(b) shows an enlarged side view of the head portion of the brush according to the present invention.

[0062] The brush according to the present invention includes a head portion 1 and a grip portion 2 connected to the head portion 1. The brush according to Embodiment 7 may not have a heater. The head portion 1 further includes bristles 3 in a direction facing the head portion 1 (z-axis direction perpendicular to the xy plane). The bristles 3 may be composed of only resin pins. In a preferred embodiment, as described with reference to FIG. 2(c), it is preferable to arrange the bristles 3 at the intersections of each track by combining two-direction spirals. With such a configuration, entangled hair can be efficiently combed.

[0063] The cross-sectional shape of the bristles 3 provided in the head portion 1 according to Embodiment 7 in the xy plane may be substantially circular. In other preferred embodiments, the cross-sectional shape of the bristles 3 in the xy plane may be elliptical.

[0064] The brush surface of the head portion 1 is not limited to a planar shape, and may be convex or concave in the xz plane.

[0065] In a preferred embodiment, the head portion 1 has a shape that is convexly curved in the z-axis direction in the xz plane. The bristles 3 preferably extend so as to stand vertically in the z-axis direction. In another preferred embodiment, among the cross-sections of the head portion 1 that is convexly curved in the xz plane, the bristles 3 are preferably arranged so as to stand vertically with respect to the tangential direction on the curved surface. It is preferable that the center of the cross-sectional area of the root portion of the bristles 3 on the surface of the curved head portion 1 is arranged on the spiral track.

[0066] 〔Modification〕 A configuration in which a beast hair brush, which is said to be gentle on hair, is appropriately added, or resin pins are added or thinned out, is within the range where the design can be appropriately changed and does not affect the scope of the present invention. Also, a configuration in which a blower is added to give the hairbrush the function of a dryer is within the range where the design can be appropriately changed and does not affect the scope of the present invention.

[0067] 〔Summary〕 The hairbrush according to Aspect 1 of the present invention is a hairbrush including a head portion 81, wherein a setting portion (40, 50, 80) is arranged on a first surface of the head portion 81, the setting portion (40, 50, 80) includes a plurality of bristles (20, 21, 22, 41, 41β, 42, 52) extending from the surface of the setting portion, the center of each cross-section of the bristles (20, 21, 22, 41, 41β, 42, 52) on the surface of the setting portion is geometrically arranged on the first surface, the geometric arrangement is an arrangement along a part of a spiral on the first surface, and at least two of the plurality of bristles (20, 21, 22, 41, 41β, 42, 52) are first bristles (heat transfer pins 20, 21, 22, 41, 41β, 42) made of a heat transfer body that transfers heat to the hair.

[0068] According to the above configuration, the hair can be efficiently caught by the bristles, and the setting force of the hair can be increased.

[0069] In the hairbrush according to Aspect 2 of the present invention, in the above Aspect 1, the geometric arrangement may be an arrangement along a part of the intersection of the two spirals on the first surface.

[0070] According to the above configuration, the bristles can efficiently catch the hair from any direction of intrusion, and the setting force of the hair can be enhanced.

[0071] In the hairbrush according to Aspect 3 of the present invention, in the above Aspect 1 or 2, at least one of the plurality of bristles (20, 21, 22, 41, 41β, 42, 52) may be a second bristle (resin pin 52) made of a resin having a lower thermal conductivity than the heat transfer body.

[0072] According to the above configuration, it is possible to prevent the hair that has entered the gap between the bristles from slipping out.

[0073] In the hairbrush according to Aspect 4 of the present invention, in the above Aspect 3, the height of the first bristle (heat transfer pins 20, 21, 22, 41, 41β, 42) may be lower than the height of the second bristle (resin pin 52).

[0074] According to the above configuration, it is possible to prevent the first bristle made of the heat transfer body from directly touching the scalp.

[0075] In the hairbrush according to Aspect 5 of the present invention, in any one of the above Aspects 1 to 4, a part of the spiral on the first surface has a first track and a second track, and a first bristle having a first height is arranged on the first track, and a first bristle having a second height different from the first height is arranged on the second track.

[0076] According to the above configuration, while improving the setting force by the spiral arrangement, it is possible to improve the ease of hair intrusion and improve the balance of the effects.

[0077] In the hairbrush according to aspect 6 of the present invention, in any of the above aspects 1 to 5, adjacent to the first bristles (heat transfer pins 20, 21, 22, 41, 41β) having a first cross-sectional area, a first bristle (heat transfer pin 42) having a second cross-sectional area different from the first cross-sectional area is arranged, the first cross-sectional area is larger than the second cross-sectional area, and the first bristle (heat transfer pin 42) having the second cross-sectional area may be arranged along the longitudinal end of the set portion (40, 50, 80).

[0078] According to the above configuration, while improving the setting force by the spiral arrangement, it is possible to improve the ease of hair penetration and improve the balance of effects.

[0079] In the hairbrush according to aspect 7 of the present invention, in any of the above aspects 1 to 6, the cross-section of the bristles of the first (heat transfer pins 20, 21, 22, 41) has an elliptical shape having a major axis and a minor axis, and the minor axis may be arranged parallel to the longitudinal direction of the set portion (40, 50, 80).

[0080] According to the above configuration, by making the cross-section of the bristles elliptical, heat can be efficiently transferred to the hair.

[0081] In the hairbrush according to aspect 8 of the present invention, in any of the above aspects 1 to 7, the cross-section of the first bristle (heat transfer pin 41β) has an elliptical shape having a major axis and a minor axis, and the first bristle (heat transfer pin 41β) may be arranged at an angle randomly determined such that the angle at which the minor axis intersects the longitudinal axis of the set portion (40, 50, 80).

[0082] According to the above configuration, the grip force of the hair can be improved and heat can be efficiently transferred to the hair.

[0083] The hairbrush according to Aspect 9 of the present invention is, in any of the above Aspects 1 to 8, wherein the cross section of the first bristle (heat transfer pin 41β) has an elliptical shape having a first axis and a second axis, and among the first bristles (heat transfer pins 41β) arranged at the end in the short direction of the set portion (40, 50, 80), the first axis of the third bristle and the first axis of the fourth bristle in the adjacent third bristle and fourth bristle are formed between the first axis of the third bristle and the longitudinal axis of the set portion (40, 50, 80). The third bristle and the fourth bristle may be arranged adjacent to each other at the end in the short direction of the set portion (40, 50, 80) such that the absolute value of the difference between the first angle and the second angle formed between the longitudinal axis of the set portion (40, 50, 80) is an angle greater than 0 degrees and less than or equal to 90 degrees.

[0084] According to the above configuration, it is possible to improve the balance of the effects of improving the ease of hair penetration and improving the hair release mode.

[0085] The hairbrush according to Aspect 10 of the present invention is a hairbrush having a grip portion 2 that can be gripped by hand and a head portion 1 connected to one end in the longitudinal direction of the grip portion 2, and includes a plurality of bristles 3 extending from a first surface of the head portion 1. The center of the cross section perpendicular to the extending direction of each of the plurality of bristles 3 on the first surface is geometrically arranged on the first surface, and the geometric arrangement is arranged at a part of the intersection of two spirals on the first surface.

[0086] According to the above configuration, by arranging the bristles in a spiral arrangement, the efficiency of the bristles catching hair can be improved.

[0087] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, by combining the technical means disclosed in each embodiment, new technical features can be formed.

Explanation of Signs

[0088] 1, 81 Head part 2, 84 Gripping part 3, 10, 11, 20, 21, 22, 31, 41, 41β, 42, 52 Bristles 40, 50, 80 Set part 53 Base part 83 Power cord 85 Rectifying plate 201, 211 Hair advancing direction 202, 212, 222, 222, 223, 223, 501 Track 810 Hairbrush

Claims

1. A hairbrush having a head portion, comprising a plurality of bristles extending from a first surface of the head portion, wherein the centers of the cross-sections of the bristles are arranged along a part of a spiral that moves away from the center as it rotates on the first surface of the head portion, wherein a part of the spiral is a portion where, when the component in the y-direction in which the head portion extends on the first surface continues to increase, the component in the x-direction perpendicular to the y-direction on the first surface either continues to increase or continues to decrease, A hairbrush characterized by the above.

2. The center of the cross-section of the bristle is arranged at the intersection of a part of the two spirals on the first surface, When the part of the two spirals is regarded as a part of a first spiral and a part of a second spiral, the part of the first spiral is a portion where the component in the x-direction continues to decrease when the component in the y-direction continues to increase, and the part of the second spiral is a portion where the component in the x-direction continues to increase when the component in the y-direction continues to increase. The hairbrush according to Claim 1, characterized by the above.

3. At least two of the plurality of bristles are first bristles made of a heat conductor that transfers heat to hair, The hairbrush according to Claim 1 or 2, characterized by the above.

4. At least one of the plurality of bristles is a second bristle made of a resin having a lower thermal conductivity than the heat conductor, The hairbrush according to Claim 3, characterized by the above.

5. The height of the first bristle is lower than the height of the second bristle, The hairbrush according to Claim 4, characterized by the above.

6. A part of the spiral on the first surface has a first track and a second track, a first bristle having a first height is arranged on the first track, and a first bristle having a second height different from the first height is arranged on the second track. The hairbrush according to any one of Claims 3 to 5, characterized by the above.

7. Adjacent to the first bristle having the first cross-sectional area, a first bristle having a second cross-sectional area different from the first cross-sectional area is disposed, the first cross-sectional area being larger than the second cross-sectional area, and the first bristle having the second cross-sectional area is disposed along the end portion in the lateral direction of the head portion. The hairbrush according to any one of claims 3 to 6, characterized in that.

8. The cross-section of the first bristle has an elliptical shape having a major axis and a minor axis. The minor axis is arranged so as to be parallel to the longitudinal direction of the head portion. The hairbrush according to any one of claims 3 to 7, characterized in that.

9. The cross-section of the first bristle has an elliptical shape having a major axis and a minor axis. The first bristle is arranged at an angle at which the angle at which the minor axis intersects the axis in the longitudinal direction of the head portion is randomly determined. The hairbrush according to any one of claims 3 to 7, characterized in that.

10. A handle portion that can be gripped by hand, A head portion connected to one end in the longitudinal direction of the handle portion, A hairbrush having, Comprising a plurality of bristles extending from a first surface of the head portion, The centers of the cross-sections of the plurality of bristles on the first surface are arranged along a part of a spiral that moves away from the center as it rotates on the first surface. A part of the spiral is a part where the component in the x direction perpendicular to the y direction on the first surface continues to increase when the component in the y direction in which the head portion extends on the first surface continues to increase, or the component in the x direction continues to decrease when the component in the y direction continues to increase. A hairbrush characterized in that.

11. A hairbrush having a head portion, Comprising a plurality of bristles extending from a first surface of the head portion, The centers of the cross-sections of the bristles are arranged along a part of a spiral that moves away from the center as it rotates on the first surface of the head portion. A part of the spiral is a part where the component in the second direction orthogonal to the direction in which the bristle extends and orthogonal to the first direction continues to increase when the component in the first direction orthogonal to the direction in which the bristle extends continues to increase, or the component in the second direction continues to decrease when the component in the first direction continues to increase. A hairbrush characterized in that.

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