hairbrush

Abstract

The present disclosure provides a hairbrush that can deliver a large number of charged particles to the hair. [Solution] The hairbrush comprises a brush portion having a plurality of brush bristles protruding from the brush surface, and a charged particle generating unit having a charged particle generating electrode that generates charged particles, and if the tip side of the protruding brush bristles is considered the upper side, the tip of the charged particle generating electrode is positioned above the brush surface.

Description

[Technical Field]

[0001] The following disclosure relates to hairbrushes. [Background technology]

[0002] For example, Patent Document 1 discloses a hairbrush with an ion generator that has an ion generator equipped with needle electrodes that generate ions through corona discharge. Also, Patent Document 2 discloses a hairbrush that prevents static electricity buildup by having a linear electrical conductor exposed in a groove on the surface of the main body that extends from near the tip of the main body to the grip. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3382230 [Patent Document 2] Japanese Patent Application Publication No. 7-327740 Summary of the Invention [Problem to be solved by the invention]

[0004] The hairbrush described in Patent Document 1 has needle electrodes that generate ions positioned lower than the brush surface, making it difficult to deliver many ions to the hair.

[0005] The present disclosure aims to provide a hairbrush that can deliver a large number of charged particles to the hair. [Means for solving the problem]

[0006] A hairbrush according to one aspect of the present disclosure comprises a brush portion having a plurality of brush bristles protruding from a brush surface, and a charged particle generating unit having a charged particle generating electrode that generates charged particles, and if the tip side of the direction in which the brush bristles protrude is considered the upper side, the tip of the charged particle generating electrode is positioned above the brush surface. [Effects of the Invention]

[0007] According to the present disclosure, a hairbrush that can deliver many charged particles to hair can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a hairbrush according to an embodiment. [Figure 2] FIG. 1 is a schematic plan view of a hairbrush according to an embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA' in FIG. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB′ in FIG. 2. [Figure 5] FIG. 2 is a perspective view showing a simplified view of the housing 10. [Figure 6] FIG. 6 is a cross-sectional view taken along line AA' in FIG. 5. [Figure 7] FIG. 6 is a cross-sectional view taken along line BB′ in FIG. 5. [Figure 8] FIG. 2 is a perspective view showing a brush unit 20. [Figure 9] FIG. 2 is a plan view showing a brush unit 20. [Figure 10] 10 is a schematic plan view of a first modified example illustrating a case where the brush part 20 includes a conductive fiber body. FIG. [Figure 11] FIG. 11 is a schematic cross-sectional view showing an enlarged portion of FIG. [Figure 12] 10 is a schematic plan view of a second modified example illustrating a case where the brush part 20 includes a conductive fiber body. FIG. [Figure 13] FIG. 13 is a schematic cross-sectional view showing an enlarged portion of FIG. [Figure 14] 10 is a schematic plan view of a third modification illustrating a case where the brush part 20 includes a conductive fiber body. FIG. [Figure 15] FIG. 15 is a schematic cross-sectional view showing an enlarged portion of FIG. [Figure 16] FIG. 4 is an enlarged perspective view of a fourth modified example of the portion corresponding to the dotted line in FIG. 3. [Figure 17] FIG. 10 is an enlarged perspective view of a portion corresponding to the dotted line in FIG. 3, showing a fifth modified example. [Figure 18] FIG. 2 is a perspective view showing the hairbrush 1 in a closed state. [Figure 19] FIG. 2 is a perspective view showing the hairbrush 1 in an open state. [Figure 20] 20 is a cross-sectional view taken along line AA' in FIG. 19. [Figure 21] 20 is a cross-sectional view taken along line BB' in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of a hairbrush 1 according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the contents described in the following embodiments, and appropriate design changes can be made within the scope of the configuration of the present disclosure. In the drawings, identical or equivalent elements are given the same reference numerals, and duplicate explanations will be omitted. Only the main parts are shown in the drawings. The following description will focus on the main parts and parts related to the present disclosure.

[0010] In this specification, when describing the direction of the brush head 20 and the housing 10 to which the brush head 20 is attached, the tip end of the direction in which the brush bristles 210 protrude is referred to as the upper side (Z1), and the opposite side is referred to as the lower side (Z2). The direction perpendicular to the direction Z in which the brush bristles 210 protrude (also referred to as the up-down direction Z) is referred to as the horizontal direction X. The direction perpendicular to the up-down direction Z and perpendicular to the horizontal direction X is referred to as the front-to-back direction Y. When describing the direction of the cover head 30, the tip end of the direction in which the brush bristles 210 protrude when the brush head 20 is housed in the cover head 30 in a closed state is referred to as the upper side (Z1), and the opposite side is referred to as the lower side (Z2). Note that the upper and lower sides are also referred to as the upper side and the lower side, respectively. In the drawings, in a plan view (plan view from Z1), the upper side is referred to as Y1, and the right side is referred to as X2.

[0011] In this specification, when two lines or planes are "parallel," it means that the angle (absolute value) they form is within the range of 0°±3°. When two lines or planes are "orthogonal" (and "perpendicular"), it means that the angle (absolute value) they form is within the range of 90°±3°.

[0012] Fig. 1 is a perspective view of a hairbrush according to an embodiment. Fig. 2 is a schematic plan view of a hairbrush according to an embodiment. Fig. 3 is a cross-sectional view taken along line A-A' in Fig. 2. Fig. 4 is a cross-sectional view taken along line B-B' in Fig. 2. Fig. 5 is a perspective view showing a simplified version of the housing 10. Fig. 6 is a cross-sectional view taken along line A-A' in Fig. 5. Fig. 7 is a cross-sectional view taken along line B-B' in Fig. 5. Fig. 8 is a perspective view showing a simplified version of the brush unit 20. Fig. 9 is a plan view showing a simplified version of the brush unit 20.

[0013] As shown in Fig. 1, the hairbrush 1 of this embodiment includes a housing 10 and a brush unit 20. In this embodiment, the housing 10 and the brush unit 20 are separate, independent members that are detachably connected to each other (see Figs. 5 and 8), but the housing 10 and the brush unit 20 may also be integrally molded.

[0014] The housing 10 is a member capable of housing various structures such as electrical components inside. In this embodiment, a case will be described in which a charged particle generating unit 130 is used as the electrical component. The hairbrush 1 equipped with the charged particle generating unit 130 can apply charged particles to the hair, etc., when the user combs the hair, etc., to remove static electricity and untangle the hair, making it easier for the user to style (set) the hair, etc.

[0015] Charged particles refer to particles that are not electrically neutral or active species that have been activated to a non-electrically neutral state. Charged particles are not limited to particles with an electric charge, but also include, for example, particles such as atoms and molecules that have no electric charge but have unpaired electrons. Specifically, charged particles include, for example, positively charged ions (referred to as positive ions), negatively charged ions (referred to as negative ions), positive ion complexes, negative ion complexes, radicals, electrons, and protons. Among these, the charged particles are preferably at least one of positive ions or their complexes and negative ions or their complexes. The charged particle generating unit 130 may generate one type of charged particle or multiple types of charged particles.

[0016] The charged particle generating unit 130 includes charged particle generating electrodes that generate charged particles. The number of charged particle generating electrodes included in the charged particle generating unit 130 may be one or more. However, for example, the charged particle generating unit 130 preferably includes a first charged particle generating electrode 111 that generates positive ions or complexes thereof and a second charged particle generating electrode 112 that generates negative ions or complexes thereof (see FIG. 3, etc.). The charged particle generating unit 130 can moisturize hair by emitting negative ions or complexes of negative ions, as well as positive ions or complexes of positive ions, more than by emitting only positive or negative ions. Note that the first charged particle generating electrode 111 may be an electrode that generates negative ions or complexes thereof, and the second charged particle generating electrode 112 may be an electrode that generates negative ions or complexes thereof. In this specification, when there is no need to distinguish between the first charged particle generating electrode 111 and the second charged particle generating electrode 112, they are simply referred to as charged particle generating electrodes.

[0017] The charged particle generating unit 130 includes, for example, a transformer driving circuit board (not shown), a high-voltage transformer (not shown) driven by the high-voltage transformer driving circuit to boost an input voltage, and a substrate 113 having first and second charged particle generating electrodes 111, 112 for generating charged particles. The transformer driving circuit board is a driving circuit board for driving the high-voltage transformer with an external input voltage, and the high-voltage transformer (high-voltage circuit) is a circuit driven by the high-voltage transformer driving circuit to boost the input voltage. The substrate 113 is provided with the first and second charged particle generating electrodes 111, 112 and a dielectric electrode (not shown) for forming an electric field between the first charged particle generating electrode 111 and the second charged particle generating electrode 112. The dielectric electrode is formed, for example, in a ring shape around the mounting positions of the first and second charged particle generating electrodes 111, 112 and is at ground potential. A voltage boosted by a high-voltage transformer is applied to the first and second charged particle generating electrodes 111 and 112, thereby generating charged particles.

[0018] The charged particle generating electrode may be needle-shaped (see FIG. 3) or may be formed in a brush shape using a plurality of linear conductors. The charged particle generating electrode is formed from a conductive material such as metal, carbon fiber, conductive fiber, or conductive resin. The charged particle generating electrode is provided perpendicular to the surface of the substrate 113 and protrudes from the surface of the housing 10 toward the brush surface 201. The brush part 20 is provided with an opening 23 for exposing the first and second charged particle generating electrodes 111 and 112 to the user side.

[0019] The tip of the charged particle generating electrode is located above the brush surface 201. The hairbrush described in Patent Document 1 has a needle electrode that generates ions located below the brush surface 201, making it difficult to deliver many ions to the hair. On the other hand, the hairbrush 1 according to this embodiment has the tip of the charged particle generating electrode located above the brush surface 201, making it possible to deliver many ions and other charged particles to the hair. Reaching many charged particles to the hair reduces the generation of static electricity when the user combs their hair. If the charged particle generating electrode is needle-shaped, the tip of the needle needs to be located above the brush surface 201. If the charged particle generating electrode is brush-shaped, the uppermost linear conductor needs to be located above the brush surface 201.

[0020] When the charged particle generating unit 130 is equipped with a first charged particle generating electrode 111 and a second charged particle generating electrode 112, it is preferable that the tip of at least one of the electrodes is located above the brush surface 201, and it is more preferable that the tip of both the first charged particle generating electrode 111 and the tip of the second charged particle generating electrode 112 are located above the brush surface 201.

[0021] The tip of the charged particle generating electrode is preferably located lower than the tips of the multiple brush bristles. This configuration prevents the charged particle generating electrode from coming into contact with human body parts such as hair. It is more preferable that the tip of the charged particle generating electrode is located lower than the tip of the lowest bristles among the multiple brush bristles when the multiple brush bristles are curved. This configuration prevents the charged particle generating electrode from coming into contact with human body parts such as hair even during use.

[0022] When the charged particle generating unit 130 is equipped with a first charged particle generating electrode 111 and a second charged particle generating electrode 112, it is preferable that the tip of at least one of the electrodes is located lower than the tips of the multiple brush bristles, and it is more preferable that the tip of at least one of the electrodes is located lower than the tip of the lowest brush bristles when the multiple brush bristles are curved, but it is even more preferable that the tips of both electrodes are located lower than the tips of the multiple brush bristles, and it is particularly preferable that the tip of both electrodes is located lower than the tip of the lowest brush bristles when the multiple brush bristles are curved.

[0023] The brush unit 20 may include two or more types of bristles of different lengths. By including bristles of different lengths, it is possible to easily untangle tangled hair. When including bristles of different lengths, it is preferable that the tip of the charged particle generating electrode is positioned below the tip of the shortest bristles.

[0024] When the charged particle generating unit 130 is equipped with a first charged particle generating electrode 111 and a second charged particle generating electrode 112, it is preferable that the tip of at least one of the electrodes is located below the tip of the shortest brush bristles, and it is more preferable that the tips of both electrodes are located below the tip of the shortest brush bristles.

[0025] In order to protect the scalp and the like from the charged particle generating electrode, the hairbrush 1 preferably further includes a surrounding wall 120 that surrounds the charged particle generating electrode and is located above the brush surface 201. It is more preferable that the tip of the charged particle generating electrode is located below the upper end of the surrounding wall 120. In this embodiment, the surrounding wall 120 is provided in the housing 10 and is exposed from the opening 23 provided in the brush head 20, but the surrounding wall 120 may also be provided in the brush head 20.

[0026] When the charged particle generating unit 130 includes the first charged particle generating electrode 111 and the second charged particle generating electrode 112, it is preferable to surround at least one of the electrodes, and more preferably to surround both electrodes. In addition, it is preferable that the tip of at least one of the electrodes is located below the upper end of the surrounding wall 120, and more preferably that the tips of both electrodes are located below the upper end of the surrounding wall 120.

[0027] Although not shown, the surrounding wall 120 may have through-holes on its side surface. When a user combs their hair, charged particles such as ions pass through the through-holes along with the air, allowing the charged particles to be distributed over a wider area. The number and arrangement of the through-holes are not particularly limited, but for example, one or more through-holes may be provided that penetrate the surrounding wall 120 in the horizontal direction.

[0028] The hairbrush 1 may have a sealing member 240 arranged around the charged particle generating electrode. By arranging the sealing member 240 around the charged particle generating electrode, it is possible to prevent dust and the like from entering the inside of the housing from the outside. An example of the sealing member is a ring-shaped rubber packing. Since the charged particles are generated from the tip of the charged particle generating electrode, it is preferable that the sealing member 240 be arranged below the charged particle generating electrode, specifically below the brush surface 201, so as not to interfere with the generation of the charged particles.

[0029] When the charged particle generating unit 130 includes a first charged particle generating electrode 111 and a second charged particle generating electrode 112, it is preferable that the sealing member 240 be arranged around at least one of the first charged particle generating electrode 111 and the second charged particle generating electrode 112, and it is more preferable that the sealing member 240 be arranged around the first charged particle generating electrode 111 and the second charged particle generating electrode 112.

[0030] The housing 10 may have electrical components such as a blower fan (not shown) that blows air toward the brush head 20, an electric heater (not shown), etc. In the hairbrush 1 according to this embodiment, the tip of the charged particle generating electrode is positioned above the brush surface 201, so that the charged particles can be delivered to the hair without a blower fan. However, by blowing air with a blower fan while generating charged particles, the charged particles can be delivered over a wider range. The air generated by the blower fan is discharged toward the user from, for example, openings 23 or through-holes provided in the brush head.

[0031] The hairbrush 1, which includes electrical components, is also provided with a control unit that controls the electrical components, and a power supply unit 140 that supplies power to the electrical components. The control unit and power supply unit 140 are arranged, for example, in the housing 10. The control unit includes a substrate 113. While the drawings show an embodiment in which the power supply unit 140 includes a battery and a power supply circuit, the hairbrush 1 may also include, as the power supply unit 140, a rechargeable battery and a battery charging power receiving terminal (for example, a USB female connector) that can be electrically connected to an external charging power supply terminal.

[0032] The housing 10 preferably has a power switch section 170 that switches the current path to the charged particle generation unit 130 between an on state and an off state. FIG. 4 and other figures illustrate an example in which the power switch section 170 includes a push button 171 and a physical switch 172 (e.g., a tactile switch) that moves in response to the movement of the push button 171. When the user presses the push button 171, the push button 171 moves toward the tactile switch 172, and when the tactile switch 172 is pressed in response to this, the current path to electrical components such as the charged particle generation unit 130 is turned on. The control section starts driving the charged particle generation unit 130 when the charged particle generation unit 130 is turned on, and stops driving the charged particle generation unit 130 when the charged particle generation unit 130 is turned off.

[0033] The hairbrush 1 may be provided with a light 173 (for example, an LED light), which lights up when the electrical path to the electrical component is turned on and goes out when the electrical path is turned off. When the hairbrush 1 is provided with the light 173, the user can easily recognize the on or off state.

[0034] The housing 10 is provided with, for example, a removal switch 174 for attaching or detaching the brush head 20 to or from the housing 10, a locking portion 175 for locking the brush head attached to the housing 10, and a biasing member 176 for biasing the brush head 20 upward on the housing 10 (see FIGS. 5 and 7, etc.). The removal switch 174 is, for example, a slide switch, and is normally biased so that the brush head 20 is fixed to the housing 10 (locked state). When the user slides the removal switch 174, the locked state is released and the brush head 20 is removed from the housing 10. The biasing member 176 is, for example, composed of a coil spring and a pressing member.

[0035] The housing 10 has a rounded rectangular shape in a plan view. For example, the housing 10 may have a rectangular, elliptical, trapezoidal, diamond-shaped, semicircular, semi-elliptical, or any combination of various shapes in a plan view. The housing 10 may also have a shape whose area in a plan view decreases toward the bottom surface 160 (see FIGS. 6 and 7). The housing 10 may be made of a metal material or a resin material, but if the housing 10 or a cover unit 30 (described later) is equipped with a magnet, it is preferable that the housing 10 be made of a resin material.

[0036] The hairbrush 1 may have a handle such as a rod-shaped handle that is provided on conventional hairbrushes, but from the viewpoint of storability and portability, the handle may be omitted.

[0037] As shown in FIG. 8, the brush unit 20 includes a plurality of brush bristles 210 protruding from a brush surface 201. More specifically, the brush unit 20 includes a brush surface 201, which is the surface from which the brush bristles 210 protrude, and a plurality of brush bristles 210 protruding from the brush surface 201. The brush bristles 210 protrude on the side opposite the housing 10 (see FIG. 1). The brush surface 201 is a plane perpendicular to the up-down direction Z. The brush surface 201 preferably has substantially the same shape as the housing 10 in a planar view, for example, a rectangular shape with rounded corners in a planar view. A surface 202 of the brush unit 20 opposite the brush surface 201 is also referred to as the back surface or rear surface of the brush unit 20 (see FIGS. 3 and 4). The brush unit is arranged so that the housing 10 is close to or in contact with the back surface 202.

[0038] The brush bristles 210 are bendable and are made of, for example, a resin material, chemical fiber, animal hair, etc. The brush part 20 other than the brush bristles 210 is made of, for example, a resin material.

[0039] As shown in FIGS. 8 and 9 , the brush head 20 may be provided with a plurality of through-holes 220 penetrating the brush head 20. The brush surface 201 may include a bristle region including a plurality of brush bristles 210 and an outer edge region surrounding the bristle region in a plan view. The plurality of through-holes 220 may be provided in either the bristle region or the outer edge region. When the hairbrush 1 includes a conductive fiber body 251 (described below), the plurality of through-holes 220 are preferably provided in the outer edge region. However, since the through-holes 220 are blocked by the conductive fiber body 251, additional through-holes through which charged particles such as ions pass may be provided in the bristle region or the outer edge region. By providing through-holes in the brush head 20, air passes through the charged particle generating unit 130, and charged particles such as ions pass through the through-holes along with the air, allowing the charged particles to be delivered over a wider area.

[0040] The hairbrush 1 includes a conductive fiber body 251, at least a portion of which is exposed on the brush surface 201. The conductive fiber body 251 is preferably fixed to the brush head 20 at a position that overlaps at least one of the through-holes 220 in a plan view. The hairbrush described in Patent Document 2 has an insufficient fixation of the electrical conductor, which can cause the electrical conductor to float or become detached when the user combs their hair. If the electrical conductor cannot contact the hair, static electricity stored on the hair cannot be sufficiently removed (neutralized). In contrast, the hairbrush 1 according to this embodiment can securely fix the conductive fiber body to the brush surface 201, making it less likely to float or become detached, resulting in excellent neutralization effects. Furthermore, the conductive fiber body 251 itself can discharge static electricity, allowing for neutralization without the need for earthing the human body, as in the hairbrush described in Patent Document 2, thereby offering greater design flexibility.

[0041] The conductive fiber body 251 is preferably a string-like member, and more preferably a plurality of fibers twisted together. Because the conductive fiber body 251 is conductive, the conductive fiber body 251 itself becomes charged, and can remove static electricity from statically charged hair. Furthermore, the fuzzy surface of the conductive fiber body 251 is thought to be able to effectively discharge charged static electricity. According to the inventors' investigations, it is difficult to obtain a sufficient static elimination effect with, for example, a wire rope made of twisted metal wires.

[0042] Examples of conductive fibers include iron, chromium, and alloys thereof (stainless steel), with stainless steel being particularly preferred. Specific examples of conductive fibers include Naslon (registered trademark) manufactured by Nippon Seisen Co., Ltd. The conductive fiber body 251 may be a blend of stainless steel fiber and natural or chemical fiber, but is preferably a twisted string made only of stainless steel fiber. Furthermore, in the case of a blend, a blend of stainless steel fiber and natural fiber is preferred from the viewpoint of less static electricity generation. Examples of natural fibers include cotton, silk, linen, and wool. Examples of chemical fibers include polyester, nylon, acetate, rayon, and cupra.

[0043] The thickness (diameter) of the conductive fibrous body 251 is preferably, for example, 0.1 mm or more and 1.5 mm or less.

[0044] The following variations 1 to 3 can be cited as methods for fixing the conductive fiber body 251 to the brush part 20 at a position overlapping at least one of the plurality of through holes 220 in a plan view. The conductive fiber body 251 can be fixed to the brush part 20 by passing the conductive fiber body 251 through the through hole 220 or by entangling the conductive fiber body 251 with other fiber bodies at the position of the through hole 220.

[0045] FIG. 10 is a schematic plan view of Modification Example 1 illustrating a case in which the brush head 20 includes a conductive fiber body. FIG. 11 is a schematic cross-sectional view enlarging a portion of FIG. 10. As shown in FIGS. 10 and 11, the brush surface 201 may include a wide portion d1 in which the distance between two adjacent through holes is wide and a narrow portion d2 in which the distance between two adjacent through holes is narrower than the wide portion d1. The conductive fiber body 251 passes through a first through hole 220a, one of the multiple through holes 220, from the brush surface 201 side to the back surface 202 side of the brush head 20, and then passes through a second through hole 220b, different from the first through hole 220a, from the back surface 202 side of the brush head 20 back to the brush surface 201 side, thereby fixing the conductive fiber body 251 to the brush head 20. In other words, at least another portion of the conductive fiber body 251 is exposed on the back surface 202 side of the brush head 20. The conductive fiber body 251 may be formed into a ring shape, for example, by binding the start point and end point of the conductive fiber body 251 together.

[0046] It is preferable that at least a portion of the conductive fiber body 251 at the wide portion d1 is exposed to the brush surface 201. In this manner, a larger portion of the conductive fiber body 251 can be exposed to the brush surface 201, and a high static elimination effect can be obtained.

[0047] In the first example of the embodiment, the wide portions d1 and the narrow portions d2 are alternately arranged, but the present invention is not limited to this, and the wide portions d1 or the narrow portions d2 may be arranged consecutively. Also, the distance between two adjacent through holes may be equal.

[0048] FIG. 12 is a schematic plan view of Modification 2 illustrating a case where the brush head 20 includes a conductive fiber body. FIG. 13 is a schematic cross-sectional view of an enlarged portion of FIG. 12. As shown in FIGS. 12 and 13, the hairbrush of Modification 2 further includes another fiber body 252, at least a portion of which is exposed on the back surface 202 of the brush head 20. In Modification 2, the other fiber body 252 passes through the first through-hole 220a from the back surface 202 side of the brush head 20 to the brush surface 201 side, and then passes through the second through-hole 220b from the brush surface 201 side to the back surface 202 side again. Modification 2 illustrates a case where the distance between two adjacent through-holes is equal, but is not limited to this. The hairbrush may have a wide portion d1 and a narrow portion d2 as in Modification 1.

[0049] The other fibrous material 252 does not have to be a conductive fibrous material, and examples thereof include the above-mentioned natural fibers and chemical fibers, but from the viewpoint of preventing static electricity from being generated on hair, fibers having a similar triboelectric series to hair, such as natural fibers, are preferred. From the viewpoint of more effective static elimination, it is preferable that the other fibrous material 252 is also a conductive fibrous material.

[0050] Fig. 14 is a schematic plan view of Modification 3 illustrating a case where the brush head 20 includes a conductive fiber body. Fig. 15 is a schematic cross-sectional view of an enlarged portion of Fig. 14. As shown in Figs. 14 and 15, the hairbrush of Modification 3 further includes another fiber body 252, at least a portion of which is exposed on the back surface 202 of the brush head 20. The other fiber body 252 may be the same as that illustrated in Modification 2.

[0051] In Modification 3, the conductive fiber body 251 and the other fiber bodies 252 intersect with each other at a position that overlaps one of the multiple through holes 220 in a plan view. The conductive fiber body 251 and the other fiber bodies 252, except for the intersection with the conductive fiber body 251, are disposed on the brush surface 201 side of the brush section 20. The other fiber bodies 252, except for the intersection with the conductive fiber body 251, are disposed on the back surface 202 side of the brush section 20. In Modification 3, like machine sewing, the upper thread (conductive fiber body 251) enters the through hole 220 from the brush surface 201 side, and the lower thread (other fiber body 252) enters the through hole 220 from the back surface 202. The upper thread and lower thread are twisted at the through hole 220, and the upper thread is exposed on the brush surface 201 again, and the lower thread is exposed on the back surface 202 side. By arranging them in this manner, the conductive fiber body 251 and the other fiber bodies 252 are fixed to the brush section 20.

[0052] In Modification 3, the other fibrous body 252 does not have to be a conductive fibrous body and may be, for example, the above-mentioned natural fiber or chemical fiber. However, from the viewpoint of more effective neutralization, it is preferable that the other fibrous body 252 is also a conductive fibrous body. When the tensions of the upper thread and the lower thread are different, the lower thread may be pulled out from the through hole 220 toward the brush surface 201, so it is preferable that both the upper thread and the lower thread are conductive fibrous bodies.

[0053] In the third modification, the distance between two adjacent through holes is equal, but the present invention is not limited to this, and the through holes may have a wide portion d1 and a narrow portion d2 as in the first modification.

[0054] Fig. 16 is a perspective view of Modified Example 4, enlarging a portion corresponding to the dotted line in Fig. 3. Fig. 17 is a perspective view of Modified Example 5, enlarging a portion corresponding to the dotted line in Fig. 3. As shown in Fig. 16, brush surface 201 of brush head 20 may have a first groove 231 disposed between two adjacent through holes 220. First groove 231, and second groove 232 and / or third groove 233, which will be described later, are preferably disposed in a region overlapping the outer edge region of brush head 20 in a plan view.

[0055] 16 does not show the conductive fiber body 251, but when the conductive fiber body 251 is arranged, it is preferable that the portion of the conductive fiber body 251 exposed on the brush surface 201 is arranged along the first groove 231. By arranging the conductive fiber body 251 along the first groove 231, it is possible to more effectively prevent the conductive fiber body 251 from floating or coming off the brush surface 201. It is also possible to prevent the conductive fiber body 251 from getting caught and being damaged during use. The depth of the first groove 231 is preferably greater than the diameter of the conductive fiber body 251, and it is preferable that the conductive fiber body 251 does not protrude from the first groove 231 when the brush surface 201 is observed horizontally.

[0056] As shown in Figures 3, 8, 16, 17, etc., the hairbrush 1 may further include a backing member 21 disposed on the back surface 202 side of the brush head 20. Although the conductive fiber body 251 is not shown in Figure 16, if the conductive fiber body 251 is disposed, it is preferable that the portion of the conductive fiber body 251 exposed on the back surface 202 be disposed between the brush head 20 and the backing member 21. As shown in Figure 17, by sandwiching the conductive fiber body 251 between the brush head 20 and the backing member 21 and squeezing and pressing down the conductive fiber body 251 with both members, the conductive fiber body 251 can be more firmly fixed to the brush head 20. After the conductive fiber body 251 is fixed to the brush head 20 at a position overlapping at least one of the multiple through holes 220 in a plan view, the brush head 20 and the backing member 21 can be formed into a single unit by, for example, fusing them.

[0057] It is preferable that the rear surface member 21 has an opening of the same shape as the opening 23 at a position overlapping the opening 23 in a plan view. On the other hand, the rear surface member 21 does not necessarily have to have a plurality of through holes 220.

[0058] The back surface 202 of the brush head 20 may have a second groove 232 arranged between two adjacent through holes 200 (see FIG. 3). The portion of the conductive fiber body 251 exposed on the back surface 202 is preferably arranged along the second groove 232. By providing grooves on both the brush surface 201 and the back surface 202 of the brush head 20, the conductive fiber body 251 can be made less likely to shift. The depth of the second groove 232 is preferably shallower than the diameter of the conductive fiber body 251.

[0059] 16, the back member 21 may have a third groove 233 in a plan view on the surface facing the brush head 20. The third groove 233 is arranged to overlap the first groove 231 in a plan view. From the viewpoint of more firmly fixing the conductive fiber body 251, it is preferable that the depth of the second groove 232 is shallower than the diameter of the conductive fiber body 251, and when the second groove 232 is provided in the brush head 20, it is preferable that the third groove 233 is not provided.

[0060] The hairbrush 1 may further include a cover portion 30. The cover portion 30 is a separate member independent of the housing 10 and the brush head 20. FIG. 18 is a perspective view schematically illustrating the hairbrush 1 in a closed state. FIG. 19 is a perspective view schematically illustrating the hairbrush 1 in an open state. FIG. 20 is a cross-sectional view taken along line A-A' in FIG. 19. FIG. 21 is a cross-sectional view taken along line B-B' in FIG. 19. The cover portion is detachably attached to the housing 10, allowing the position to be changed between a closed state in which the brush head 20 is stored (see FIG. 18) and an open state in which the brush head 20 is open (see FIG. 19). The closed state is achieved when the cover portion 30 is attached to the housing 10 to which the brush head 20 is attached so that the brush bristles 210 are stored inside the cover portion 30. The inner surface 32 of the cover portion 30 and the outer surface 150 of the housing 10 are adjacent to or in contact with each other. When the cover part 30 is removed in the closed state to release the brush bristles 210, the open state is realized (see FIGS. 20 and 21).

[0061] With the tip end of the protruding brush bristles 210 facing upward, the cover 30 is removably attached to the bottom of the housing 10 in the open state. The user can use the hairbrush 1 while holding the cover 30 attached to the bottom of the housing 10. This makes it easier for the user to hold the hairbrush 1 and also prevents the cover 30 from being lost.

[0062] Furthermore, it is preferable that the outer surface 31 of the cover part 30 has a curved concave portion that forms a recess on the housing 10 side in the closed state (see Figs. 18 to 21). This makes it easier for the user to grip the cover part 30, improving the usability of the hairbrush 1. Note that a part of the outer surface 31 of the cover part 30 may be the concave portion, or as shown in Fig. 18 etc., the entire outer surface 31 of the cover part 30 may form the concave portion.

[0063] The cover 30 is made of, for example, a resin material. The cover 30 preferably has substantially the same shape as the housing 10 in plan view, for example, a rectangular shape with rounded corners in plan view.

[0064] It is preferable that the cover unit 30 covers the above-mentioned power switch unit 170 in the closed state, and exposes the power switch unit 170 in the open state with the cover unit 30 attached to the bottom of the housing 10. The closed state prevents malfunction when not in use, and the user can operate the power switch unit 170 with the cover unit 30 attached to the bottom of the housing 10 when in use.

[0065] A magnet 40 may be provided on one of the inner surface of the cover unit 30 and the outer surface of the housing 10, and a magnetic body 41 may be provided on the other. While FIGS. 20 and 21 illustrate an example in which the magnetic body 41 is provided on the outer surface of the housing 10 and the magnet 40 is provided on the inner surface of the cover unit 30, the magnetic body 41 may be provided on the inner surface of the cover unit 30 and the magnet 40 may be provided on the outer surface of the housing 10. When a user brings the cover unit 30 close to the housing 10 from above in order to achieve the closed state, the magnetic body 41 provided on the housing 10 and the magnet 40 provided on the cover unit 30 attempt to magnetically connect. This allows the user to easily achieve the closed state without exerting force.

[0066] The magnet 40 is disposed on the inner surface 32 of the cover part 30. The magnet 40 may be disposed in one or more locations on the inner surface 32 of the cover part 30, or may be provided along the inner periphery of the inner surface of the cover part 30, covering more than half the entire length of the inner periphery.

[0067] The magnetic body 41 is disposed on a portion of the outer surface 150 of the housing 10 that is close to or in contact with the magnet 40 of the cover part 30 in the closed state. In particular, it is preferable that the magnetic body 41 be provided along the outer periphery of the outer surface 150 of the housing 10 for at least half of the entire length of the periphery. The magnetic body 41 is, for example, a metal plate made of a magnetic metal. Examples of materials for the magnetic body 41 include iron, cobalt, nickel, or alloys thereof (such as stainless steel).

[0068] The housing 10 and the cover part 30 may each have a first fitting portion 151 and a second fitting portion 34 that fit together. This allows the closed state to be firmly maintained, further improving usability. As shown in Figures 20 and 21, a rib is formed around the entire periphery of the outer surface 150 of the housing 10, and this rib is an example of the first fitting portion 151. The first fitting portion 151 may be provided on a portion of the outer surface 150, rather than the entire periphery. A second fitting portion 34 that fits into the first fitting portion 151 is provided on a portion or the entire periphery of the inner surface 32 of the cover part 30 (see Figures 20 and 21).

[0069] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments and can be implemented in various forms without departing from the spirit of the present disclosure. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0070] Furthermore, the drawings mainly show each component in a schematic manner to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a scope that does not substantially deviate from the effects of the present disclosure. [Explanation of symbols]

[0071] 1: Hairbrush 10: Housing 20: Brush section 21: Back member 23:Aperture 30: Cover part 31: Outer surface of cover 32: Inner surface of cover 34: Second fitting part 40: Magnet 41:Magnetic material 111: First charged particle generating electrode 112: Second charged particle generating electrode 113: Substrate 120: Surrounding wall 130: Charged particle generation unit 140: Power supply unit 150: Outer surface of the housing 151: First fitting part 160: Bottom of the case 170: Power switch section 171: Push button 172: Physical switch (tactile switch) 173: Lighting 174:Removal switch 175: Locking part 176: biasing member 200:Through hole 201: Brush surface 202: Back side 210:Brush hair 220:Through hole 220a: First through hole 220b: Second through hole 231: First Groove 232: Second Groove 233: The Third Groove 240: Sealing member 251: Conductive fiber 252: Other fibrous bodies

Claims

1. a brush portion having a plurality of brush bristles protruding from a brush surface; a charged particle generating unit having a charged particle generating electrode for generating charged particles; Equipped with When the tip side of the brush bristles in the direction in which they protrude is defined as the upper side, the tip of the charged particle generating electrode is located above the brush surface.

2. The hairbrush according to claim 1 , wherein the tip of the charged particle generating electrode is located below the tips of the plurality of brush bristles.

3. the plurality of brush bristles are bendable; 3. The hairbrush according to claim 2, wherein the tip of the charged particle generating electrode is located lower than the tip of a lowermost bristles of the plurality of bristles when the plurality of bristles are curved.

4. 4. The hairbrush of claim 3, further comprising a peripheral wall surrounding the charged particle generating electrode and positioned above the brush surface.

5. The hairbrush according to claim 4 , wherein the tip of the charged particle generating electrode is located below an upper end of the peripheral wall.

6. 6. The hairbrush according to claim 5, wherein the upper end of the peripheral wall is located lower than the tip of the lowest bristles of the plurality of bristles when the plurality of bristles are curved.

7. The hairbrush of claim 4 , wherein the peripheral wall has through holes on the side surfaces.

8. The hairbrush according to claim 7 , wherein the brush head has a through-hole extending therethrough.

9. The charged particle generating electrode includes a first charged particle generating electrode that emits negative ions or complexes of negative ions; a second charged particle generating electrode that emits positive ions or complexes of positive ions; The hairbrush according to any one of claims 1 to 8, wherein both the tip of the first charged particle generating electrode and the tip of the second charged particle generating electrode are positioned above the brush surface.

10. a housing including the charged particle generating unit; a cover part that is detachably attached to the housing and that enables the position to be changed between a closed state in which the brush part is stored and an open state in which the brush part is opened, The hairbrush according to any one of claims 1 to 8, wherein a magnet is provided on one of the inner surface of the cover portion and the outer surface of the housing, and a magnetic body is provided on the other.

11. a housing including the charged particle generating unit; a cover part that is detachably attached to the housing and that enables the position to be changed between a closed state in which the brush part is stored and an open state in which the brush part is opened, The hairbrush according to any one of claims 1 to 8, wherein the outer surface of the cover has a concave portion that is curved so as to form a recess on the housing side in the closed state.

12. a housing including the charged particle generating unit; a cover part that is detachably attached to the housing and that enables the position to be changed between a closed state in which the brush part is stored and an open state in which the brush part is opened, The hairbrush of any one of claims 1 to 8, wherein the cover portion is removably attached to the lower part of the housing in the open state, with the tip side of the brush bristles protruding being considered as the upper side.

13. the housing has a power switch section that switches a current path to the charged particle generation unit between an on state and an off state, the cover covers the power switch in the closed state; The hairbrush according to claim 12, wherein in the open state where the cover is attached to the lower part of the housing, the power switch is exposed.

14. The hairbrush of claim 1 or 2, further comprising a peripheral wall surrounding the charged particle generating electrode and positioned above the brush surface.

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