Nozzle for scalp washer and scalp washer

Abstract

The invention provides a nozzle for a scalp washer and a scalp washer, which can effectively remove sebum dirt and the like clogged in pores and can expose hair roots. A nozzle (1) is provided with: a first flat plate section (11); a second flat plate section (21); a first peripheral wall part (12) and a second peripheral wall part (22) forming a storage space (S) between the first flat plate part and the second flat plate part; a joint part (13) protruding in a cylindrical shape from the first flat plate part; an introduction hole (15) penetrating a part of a part of the first flat plate part forming a base part of the joint part; a plurality of protrusions (23) protruding in a cylindrical shape from the second flat plate section; and ejection holes (25) that penetrate through a portion of each of the portions of the second flat plate portion that constitute the base portion of each of the plurality of protrusions, the total cross-sectional area of the plurality of ejection holes being smaller than the cross-sectional area of the introduction hole.

Description

Technical Field

[0001] The present invention relates to a scalp washer nozzle that cleans the scalp and removes sebum and dirt clogged in pores to expose hair roots, and a scalp washer equipped with the scalp washer nozzle. Background Art

[0002] In order to clean the dirt attached to the scalp, a shower head that generates fine bubbles is implemented. The shower head claims that the fine bubbles can penetrate into the pores and remove the sebum dirt and the like that are clogged in the pores.

[0003] However, the hot water sprayed from the shower head collides with the hair and scatters, which significantly reduces the amount of hot water reaching the pores. Furthermore, the hot water sprayed from the shower head collides with the hair, reducing the water pressure. Therefore, even if the hot water does reach the pores, it is less effective in removing sebum and other impurities clogged in the pores.

[0004] Multiple hairs grow from a single pore. The part of each hair that lies deeper than the epidermis is called the "hair root." The hair root is surrounded by a root sheath. At the base of the hair root, hair matrix cells (MCs) within the MCs absorb nutrients from capillaries via the dermal papilla, driving hair growth. Therefore, when the function of MCs decreases, hair growth becomes insufficient, resulting in a reduction in the thickness of individual hairs or a decrease in the number of hairs, leading to what is known as "hair thinning." Hair growth enhancers that activate MCs are commercially available. However, because sebaceous glands open into pores, sebum secreted from these glands can sometimes clog the pores. If pores are clogged with sebum, even with the use of MCs, the ingredients in the MCs will not reach the base of the hair root, preventing them from fully reaching the MCs. It is generally believed that if sebum and dirt clogged in pores can be reliably removed, the hair roots will be exposed to the base, so that ingredients that contribute to hair growth can reach the base of the hair roots and act on the hair matrix cells.

[0005] Therefore, when washing the scalp, there is a demand for a solution that can effectively remove sebum and dirt that are clogged in the pores and expose the hair roots. Summary of the Invention

[0006] Problems to be solved by the invention

[0007] Therefore, in view of the above-mentioned actual situation, the present invention aims to provide a scalp washer nozzle that can effectively remove sebum and dirt clogged in pores and expose hair roots, and to provide a scalp washer equipped with the scalp washer nozzle.

[0008] Solutions to Problems

[0009] In order to solve the above-mentioned problems, the scalp washer nozzle of the present invention is

[0010] "have:

[0011] a flat first flat portion;

[0012] a second flat plate portion having a flat plate shape;

[0013] a peripheral wall portion, forming a storage space between the first flat plate portion and the second flat plate portion;

[0014] a joint portion protruding in a cylindrical shape from the first flat portion in a direction opposite to the second flat portion;

[0015] an introduction hole penetrating a portion of the first flat plate portion constituting a base portion of the joint portion;

[0016] a plurality of protrusions protruding in a cylindrical shape from the second flat plate portion in a direction opposite to the first flat plate portion; and

[0017] The ejection hole penetrates a portion of each of the parts of the second flat plate portion constituting the base of each of the plurality of protrusions,

[0018] The total cross-sectional area of ​​the plurality of ejection holes is smaller than the cross-sectional area of ​​the introduction hole.

[0019] Here, "the portion of the first flat plate portion constituting the base of the joint portion" refers to the portion of the first flat plate portion surrounded by the connection portion connected to the side circumference of the cylindrical joint portion. Furthermore, "the portion of the second flat plate portion constituting the base of each of the plurality of protrusions" refers to the portion of the second flat plate portion surrounded by the connection portion connected to the side circumference of the cylindrical protrusion for each of the plurality of protrusions.

[0020] When hot water is introduced into the connector, it circulates within the connector and flows into the reservoir through an inlet hole extending through the portion of the first flat plate that forms the base of the connector. When the reservoir is filled with hot water, it is ejected from the multiple ejection holes and then, through the distal end of the cylindrical protrusion, is ejected. Therefore, by bringing the distal end of the protrusion close to or contacting the scalp and moving the scalp washer nozzle along the scalp, the scalp can be cleansed using the hot water ejected from the protrusion.

[0021] At this time, the combined cross-sectional area of ​​the multiple ejection holes that eject hot water from the storage space is smaller than the cross-sectional area of ​​the inlet hole that introduces hot water into the storage space. This cross-sectional area relationship allows the hot water ejected from the ejection holes to be pressurized, becoming high-pressure hot water before being ejected from the ejection holes. This allows the scalp to be cleansed with high-pressure hot water, effectively removing even sebum and other impurities clogged in pores.

[0022] Furthermore, if the hot water ejected from the spray holes penetrating the second flat plate were to be used to directly clean the scalp, it would be difficult for individuals with a thick hair mass to bring the spray holes close to the scalp, significantly reducing the effectiveness of cleaning the scalp and pores. In contrast, in the present invention, multiple cylindrical protrusions protrude from the second flat plate, each with a spray hole formed at its base. Therefore, hot water ejected from the spray holes is ejected from the distal ends of the protrusions. Consequently, when the scalp washer nozzle is moved along the scalp, the multiple protrusions act like comb teeth, parting the hair while the distal ends of the protrusions approach or contact the scalp. Thus, the scalp washer nozzle of the present invention allows even individuals with a thick hair mass to effectively cleanse their scalp and pores by ejecting high-pressure hot water. Furthermore, the high-pressure hot water ejected from the protrusions, or by the protrusions themselves, acting like comb teeth, contacting the scalp and moving, can also provide a scalp massage effect.

[0023] The scalp washing nozzle of the present invention can be formed into the following structures based on the above structure:

[0024] "A plurality of said protrusions are arranged on the circumference,

[0025] The thickness of the portion of the second flat plate portion that connects the base portions of each of the plurality of protrusions into a circle is smaller than the thickness of the other portions of the second flat plate portion.

[0026] If the thickness of the portion of the second flat plate portion through which the ejection hole passes were large, then when hot water circulates inside the ejection hole, it is possible that the hot water would come into contact with the inner circumferential surface of the ejection hole, thereby reducing the water pressure. In contrast, in this structure, the plurality of protrusions are arranged on the circumference, and the thickness of the portion of the second flat plate portion that connects the bases of the plurality of protrusions to form a circle is set to be smaller than the thickness of the other portions. In other words, the ejection hole is formed in the portion of the second flat plate portion that has a smaller thickness. Therefore, the mechanical strength of the second flat plate portion can be borne by the portion with a larger thickness, and the thickness of the portion where the ejection hole is provided can be reduced, thereby suppressing the reduction in water pressure when passing through the ejection hole and allowing high-pressure hot water to be ejected from the ejection hole.

[0027] The scalp washing nozzle of the present invention can be formed into the following structures based on the above structure:

[0028] The scalp cleaning nozzle further comprises:

[0029] a cleaning opening extending through the second flat plate portion; and

[0030] The cover body opens and closes the opening for cleaning.

[0031] When using hot water from a bathtub as the hot water for the inlet port, for example, tiny foreign matter contained in the hot water may be carried into the storage space. Because the cross-sectional area of ​​the ejection port is smaller than that of the inlet port, such foreign matter is difficult to discharge to the outside through the ejection port and may remain in the storage space. In this structure, a cleaning opening is formed in the second flat plate portion, which can be opened and closed by a lid. Therefore, the scalp washer nozzle is typically used with the cleaning opening closed by the lid. However, simply removing the lid and opening the cleaning opening allows for easy cleaning of the interior of the storage space.

[0032] Next, the scalp cleanser of the present invention

[0033] "have:

[0034] The scalp cleaner nozzle;

[0035] an introduction tube connected to the joint portion of the scalp washer nozzle; and

[0036] The pump discharges the hot water drawn from the outside into the inlet pipe.

[0037] This is a scalp washer having the above-mentioned scalp washer nozzle, and is equipped with a pump capable of introducing hot water into the scalp washer nozzle. If a small pump is used as the pump, a portable scalp washer can be made that can be moved to various locations such as a bathroom or toilet, or can be carried on the go.

[0038] Effects of the Invention

[0039] As described above, the present invention can provide a scalp washer nozzle that can effectively remove sebum and dirt clogged in pores and expose hair roots, and a scalp washer equipped with the scalp washer nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a perspective view of a nozzle for a scalp washer as one embodiment of the present invention.

[0041] Figure 2 yes Figure 1 The right side of the scalp cleanser nozzle.

[0042] Figure 3 yes Figure 2 AA line section view.

[0043] Figure 4 Yes Figure 1 Schematic diagram of a scalp cleanser with a nozzle. DETAILED DESCRIPTION

[0044] Hereinafter, a scalp washer nozzle 1 and a scalp washer D including the scalp washer nozzle 1 according to one embodiment of the present invention will be described with reference to the drawings.

[0045] like Figures 1 to 3 As shown, the scalp washer nozzle 1 (hereinafter referred to as "nozzle 1") comprises: a nozzle body including a first member 10 and a second member 20; and a grip 40. Figure 4 As shown, in addition to the nozzle 1 , a pump 5 , an introduction pipe 6 , and a water suction pipe 7 are also provided.

[0046] In the nozzle 1, the first member 10 includes a first flat plate portion 11, a first peripheral wall portion 12, a joint portion 13, and an introduction hole 15. The first flat plate portion 11 is a flat disk (a circular flat plate). The first peripheral wall portion 12 is erected in one direction from the periphery of the first flat plate portion 11.

[0047] The joint portion 13 is cylindrical and stands upright in the center of the first flat plate portion 11, facing in the opposite direction from the direction in which the first peripheral wall portion 12 stands upright. An introduction hole 15 extends through a portion of the first flat plate portion 11 that forms the base of the joint portion 13. The inner diameter of the cylindrical joint portion 13 is approximately the same as the diameter of the introduction hole 15. In this embodiment, the outer diameter of the joint portion 13 changes discontinuously, with a step 13c formed between a large-diameter portion 13a at the base and a small-diameter portion 13b located closer to the distal end.

[0048] The second member 20 includes a second flat plate portion 21, a second peripheral wall portion 22, a flange portion 24, a plurality of protrusions 23, a spray hole 25, a discharge hole 27, a cleaning opening 31, and a cover 32. The second flat plate portion 21 is flat, disc-shaped, and the second peripheral wall portion 22 extends in one direction from the periphery of the second flat plate portion 21. The direction in which the second peripheral wall portion 22 extends from the second flat plate portion 21 is opposite to the direction in which the first peripheral wall portion 12 extends from the first flat plate portion 11. Furthermore, the flange portion 24 extends outside the second peripheral wall portion 22 in a direction extending from the second flat plate portion 21.

[0049] Each of the multiple protrusions 23 is cylindrical and extends vertically from the second flat plate portion 21 in a direction opposite to the direction in which the second peripheral wall portion 22 is provided. The ejection holes 25 extend through a portion of the second flat plate portion 21 that forms the base of each of the multiple protrusions 23. The inner diameter and the diameter of the distal opening 23h of the cylindrical protrusion 23 are larger than the diameter of the ejection hole 25, specifically, 3 to 10 times larger. Furthermore, the distal end of the protrusion 23 is formed into a curved surface with no corners and a rounded shape.

[0050] The discharge hole 27 penetrates the side peripheral surface near the terminal opening 23h of each of the plurality of protrusions 23. The discharge hole 27 is not continuous with the terminal opening 23h.

[0051] The outer diameter of the second peripheral wall portion 22 is slightly smaller than the inner diameter of the first peripheral wall portion 12. Therefore, by fitting the second peripheral wall portion 22 into the interior of the first peripheral wall portion 12, the first member 10 and the second member 20 can be watertightly integrated. At this time, the flange portion 24 of the second member 20 abuts against the end of the first peripheral wall portion 12 of the first member 10.

[0052] By fitting the second peripheral wall portion 22 into the interior of the first peripheral wall portion 12, the first member 10 and the second member 20 are integrated, thereby forming a storage space S between the first flat plate portion 11 and the second flat plate portion 21. Furthermore, the single inlet hole 15 and the plurality of ejection holes 25 are each connected to the storage space S. The first peripheral wall portion 12 and the second peripheral wall portion 22 correspond to the "peripheral wall portion" of the present invention.

[0053] The total cross-sectional area of ​​each of the multiple ejection holes 25 (the area of ​​the portion surrounded by the opening edge in a plane perpendicular to the axial direction of the ejection hole 25) is smaller than the cross-sectional area of ​​one inlet hole 15 (the area of ​​the portion surrounded by the opening edge in a plane perpendicular to the axial direction of the inlet hole 15), specifically 1 / 3 to 1 / 2.

[0054] In this embodiment, the number of the ejection holes 25 is an odd number, and the disc-shaped second flat plate portion 21 is provided with an odd number of ejection holes 25 at equal angular intervals on a single circumference concentric with the second flat plate portion 21. The number of the ejection holes 25 is preferably 3 to 9, and here, 5 are exemplified.

[0055] The thickness of the circular portion of the second flat plate portion 21, where the bases of the plurality of protrusions 23 are connected, is set to be smaller than the thickness of the remaining portion. In other words, the ejection holes 25 penetrate the thinner portion of the second flat plate portion 21. Since the plurality of ejection holes 25 are arranged on a single circle concentric with the second flat plate portion 21, the thickness of the portion penetrated by the ejection holes 25 can be easily reduced by rotating the cutting tool or workpiece.

[0056] The cleaning opening 31 is located in the second flat plate portion 21 and extends through the second flat plate portion 21 at a position that does not interfere with the plurality of ejection holes 25 and in a portion having a thickness greater than that of the portion through which the ejection holes 25 extend. In this embodiment, the cleaning opening 31 is circular and is located concentrically with the imaginary circle in which the ejection holes 25 are arranged in the second flat plate portion 21. An internal thread is formed on the inner circumferential surface of the cleaning opening 31.

[0057] The lid 32 opens and closes the cleaning opening 31 and is disc-shaped. Its outer circumference has external threads that engage with the internal threads of the cleaning opening 31. A rotational operation groove 32r is formed in the lid 32 for rotating the lid 32. While the rotational operation groove 32r is illustrated here as a groove that can be rotated using a coin without a tool, it can also be a groove that can be rotated using a tool such as a positive or negative screwdriver.

[0058] The grip portion 40 is generally cylindrical, with a continuously curved outer peripheral surface that is recessed at the center in a cross-section taken along a plane parallel to the axial direction and passing through the center, making it easy to grasp with the fingers. The grip portion 40 can be integrated with the first member 10, that is, with the nozzle body, by inserting the small-diameter portion 13b of the connector 13 into one end of the inlet tube 6 and abutting the end of the inlet tube 6 against the stepped portion 13c.

[0059] Next, the method of using and the effects of the scalp washer nozzle 1 and the scalp washer D will be described. When the scalp washer D is used, the washing opening 31 provided in the second flat plate portion 21 is closed by the cover 32 .

[0060] Furthermore, in the inlet pipe 6, the pump connection portion 6j located at the end on the side opposite to the side connected to the joint portion 13 of the nozzle 1 is connected to the inlet pipe connection port (not shown in the figure) provided at one end of the pump 5. In addition, one end of the suction pipe 7 is connected to the suction pipe connection port 5b provided near the other end of the pump 5. A filter 7s is installed at the other end of the suction pipe 7, so that the end on the filter 7s side is immersed in hot water. The hot water can be hot water drawn up and placed in a container such as a washbasin, or it can be hot water in a bathtub. In addition, if the pump 5 is highly waterproof, the suction pipe 7 can be omitted, and the pump 5 can be immersed in hot water in such a way that the suction pipe connection port 5b is located in the hot water. In this specification, "hot water" means "hot water" or "water".

[0061] When pump 5 is operated in this state, hot water is drawn into pump 5 through suction pipe connection port 5b and discharged into inlet pipe 6 through inlet pipe connection port. Pump 5 can be a "pulsating" type pump 5, in which the flow rate of hot water drawn in and discharged periodically increases and decreases, and the pressure fluctuates accordingly. For example, a pulsating pump can be used that pulsates more than ten times per second.

[0062] Hot water pumped from the pump 5 to the inlet pipe 6 flows through the interior space of the connector 13 connected to the inlet pipe 6, and flows into the reservoir S at the base of the connector 13 through the inlet hole 15 extending through the first flat plate 11. When the reservoir S is filled with hot water, it is ejected from the multiple ejection holes 25 and out of the opening 23h at the distal end of the protrusion 23. Therefore, by grasping the grip 40 with the fingers, bringing the distal end of the protrusion 23 close to the scalp, or bringing the distal end of the protrusion 23 into contact with the scalp, and moving the nozzle 1 along the scalp, the hot water ejected from the ejection holes 25 can be ejected from the protrusion 23 to clean the scalp. The distal end of the protrusion 23 is formed into a curved surface with a rounded shape, so even when the protrusion 23 is moved while in contact with the scalp, it does not damage the scalp.

[0063] The combined cross-sectional area of ​​the plurality of ejection holes 25 through which hot water is ejected from the storage space S is smaller than the cross-sectional area of ​​the single inlet hole 15 through which hot water is introduced into the storage space S. Due to this cross-sectional area relationship, the hot water ejected from the ejection holes 25 is pressurized, becoming high-pressure hot water before being ejected from the ejection holes 25. Therefore, the scalp can be cleansed with high-pressure hot water, and even if sebum and dirt are clogged in the pores, they can be effectively removed by the high-pressure hot water.

[0064] Here, assuming the absence of protrusions 23, the hot water ejected from the spray holes 25 extending through the second flat plate portion 21 would directly cleanse the scalp. However, for people with a thick layer of hair, it would be difficult to get the spray holes 25 close to the scalp, significantly reducing the effectiveness of cleaning the scalp and pores. In contrast, in the nozzle 1, multiple cylindrical protrusions 23 protrude from the second flat plate portion 21, with the spray holes 25 opening at the base of each protrusion 23. Consequently, hot water ejected from the spray holes 25 flows through the interior of the protrusions 23 before being ejected from the distal openings 23h of the protrusions 23. As the nozzle 1 is moved along the scalp, the multiple protrusions 23 act like comb teeth, allowing the protrusions 23 to part the hair before the distal openings 23h of the protrusions 23 contact the scalp. Therefore, the nozzle 1 allows even people with a thick layer of hair to effectively cleanse their scalp and pores by spraying high-pressure hot water.

[0065] Furthermore, if the hot water ejected from the ejection hole 25 located at the base of the protrusion 23 contacts the inner circumferential surface of the protrusion 23 while circulating within the cylindrical protrusion 23, the pressure of the hot water ejected from the ejection hole 25 may decrease. In contrast, in this embodiment, the inner diameter of the protrusion 23 and the diameter of the terminal opening 23h are set larger than the diameter of the ejection hole 25. Therefore, the possibility of the hot water pressure decreasing during the period from circulating within the protrusion 23 until being ejected from the terminal opening 23h is significantly reduced, allowing the scalp to be effectively cleansed with high-pressure hot water, effectively removing sebum and dirt clogged in the pores.

[0066] Furthermore, if the portion of the second flat plate portion 21 through which the spray hole 25 passes is thick, the water pressure could be significantly reduced due to friction with the inner circumferential surface of the spray hole 25 as the hot water flows through it. In contrast, in this embodiment, the thickness of the portion of the second flat plate portion 21 through which the spray hole 25 passes is set to be thinner than the thickness of the other portions. Therefore, by ensuring that the thicker portion provides mechanical strength for the second flat plate portion 21 and that the spray hole 25 passes through the thinner portion, the drop in water pressure when the water passes through the spray hole 25 can be suppressed, allowing high-pressure hot water to be ejected from the spray hole 25.

[0067] The hot water ejected from the distal end opening 23h of the protrusion 23 may sometimes contact the scalp and return to the interior space of the protrusion 23. Since the discharge holes 27 are formed in the side circumference of the protrusion 23, the hot water that contacts the scalp and returns to the interior space of the protrusion 23 is effectively discharged through the discharge holes 27.

[0068] As a possible alternative to this structure for discharging hot water, a configuration in which a notch-like groove is provided around the periphery of the terminal opening 23h is also conceivable. Even with this configuration, hot water that contacts the scalp and returns is discharged through the notch-like groove. However, if a notch-like groove is provided around the periphery of the terminal opening 23h, since the groove is connected to the terminal opening 23h, there is a risk of damaging the scalp at the interface between the groove and the terminal opening 23h if hair gets caught in the groove or the distal end of the protrusion 23 contacts the scalp and moves. To prevent scalp damage, the interface between the groove and the terminal opening 23h would require smoothing, which would be very laborious. In contrast, in this embodiment, the discharge hole 27 is formed to pass through the side surface of the protrusion 23, and the discharge hole 27 is discontinuous with the terminal opening 23h of the protrusion 23. Therefore, hair will not be caught in the discharge hole 27, and the terminal end of the protrusion 23 can be easily processed, so that even if the terminal end of the protrusion 23 is moved in contact with the scalp, the scalp will not be damaged.

[0069] Furthermore, when using hot water from a bathtub as the hot water introduced from the inlet pipe 6, for example, tiny foreign matter contained in the hot water may not be adequately removed by the filter 7s and may flow into the storage space S through the inlet hole 15. Since the cross-sectional area of ​​the discharge hole 25 is smaller than that of the inlet hole 15, foreign matter is less likely to be discharged to the outside through the discharge hole 25 and may remain within the storage space S. In this embodiment, a cleaning opening 31 is formed in the second flat plate portion 21, and this cleaning opening 31 can be opened and closed by a lid 32. Therefore, the nozzle 1 is normally used with the cleaning opening 31 closed by the lid 32. However, by removing the lid 32 and opening the cleaning opening 31, the interior of the storage space S can be easily cleaned.

[0070] Since the cleaning opening 31 is formed in a portion of the second flat plate portion 21 that is thicker than the base of the protrusion 23 through which the ejection hole 25 passes, it is easy to form the cleaning opening 31 in the second flat plate portion 21 to a certain depth (thickness) required to form the internal thread into a spiral shape. In addition, since the thickness of the portion of the second flat plate portion 21 where the cleaning opening 31 is formed is large, it is possible to provide the cleaning opening 31 while suppressing a decrease in the mechanical strength of the second flat plate portion 21.

[0071] Furthermore, the lid 32 that opens and closes the cleaning opening 31 by screwing the male and female threads can be rotated by a coin, and thus can be easily opened and closed even without tools.

[0072] Furthermore, in the nozzle 1, a plurality of protrusions 23 are arranged at equal angular intervals around the circumference of the second flat plate portion 21. If the number of protrusions 23 were even, and the protrusions 23 were arranged at equal angular intervals around the circumference of the second flat plate portion 21, when the nozzle 1 is moved along the scalp, the protrusions 23 located forward and rearward in the direction of movement may sometimes move along the same trajectory, resulting in uneven scalp cleansing and poor efficiency. In contrast, in the present embodiment, since the number of protrusions 23 is odd, and the protrusions 23 are arranged at equal angular intervals around the circumference of the second flat plate portion 21, when the nozzle 1 is moved along the scalp, the protrusions 23 located forward and rearward in the direction of movement are unlikely to move along the same trajectory. Therefore, the hot water ejected from the plurality of protrusions 23 allows for efficient and uniform cleansing of the entire scalp.

[0073] Furthermore, when a "pulsation type" pump 5 is used as the pump 5, the hot water ejected from the protrusion 23 can massage the scalp, thereby promoting blood circulation. Furthermore, when the protrusion 23 itself is moved in contact with the scalp, a massage effect based on the contact with the protrusion 23 can also be achieved.

[0074] As described above, the nozzle 1 and the scalp washer D equipped with the nozzle 1 can thoroughly cleanse the scalp using high-pressure hot water, effectively removing sebum and other impurities clogged in the pores. The hair roots are exposed in the pores from which sebum and other impurities have been removed. Therefore, by drying the scalp after washing to remove moisture from the pores and then applying a hair growth enhancer or the like to the scalp, ingredients that contribute to hair growth can effectively act on the hair matrix cells located at the base of the exposed hair roots.

[0075] While the present invention has been described above by way of preferred embodiments, the present invention is not limited to the above-described embodiments, and various improvements and design changes are possible without departing from the spirit of the present invention as described below.

[0076] For example, in the above embodiment, the number of protrusions 23 (the number of ejection holes 25) is five. However, the number of protrusions 23 is not limited to this and may be more or less than five. For example, the number of protrusions 23 may be three. The surface of the scalp is a curved surface that is close to a sphere, but when there are three protrusions 23, the tips of all protrusions 23 can most stably contact the scalp.

[0077] In the above description, the case where the plurality of protrusions 23 are arranged on a single circumference is exemplified. However, the virtual circle where some of the plurality of protrusions are arranged and the virtual circle where the other plurality of protrusions are arranged may be concentric circles having different diameters.

[0078] Description of Reference Signs

[0079] 1 nozzle (for scalp cleaner)

[0080] 5 pumps

[0081] 6Introduction tube

[0082] 11 first flat plate portion

[0083] 12 first peripheral wall portion (peripheral wall portion)

[0084] 13 joints

[0085] 15 import holes

[0086] 21 second flat plate portion

[0087] 22 Second peripheral wall portion (peripheral wall portion)

[0088] 23 protrusion

[0089] 25 ejection holes

[0090] 31 opening for cleaning

[0091] 32 cover

[0092] Storage Space

Claims

1. A nozzle for a scalp cleaner, characterized in that: The scalp cleaning nozzle includes: a flat first flat portion; a second flat plate portion having a flat plate shape; a peripheral wall portion, forming a storage space between the first flat plate portion and the second flat plate portion; a joint portion protruding in a cylindrical shape from the first flat portion in a direction opposite to the second flat portion; an introduction hole penetrating a portion of the first flat plate portion constituting a base portion of the joint portion; a plurality of protrusions protruding from the second flat plate portion in a cylindrical shape in a direction opposite to the first flat plate portion; as well as The ejection hole penetrates a portion of each of the parts of the second flat plate portion constituting the base of each of the plurality of protrusions, The total cross-sectional area of ​​the plurality of ejection holes is smaller than the cross-sectional area of ​​the introduction hole.

2. The scalp washer nozzle according to claim 1, wherein The plurality of protrusions are arranged on the circumference, The thickness of a portion of the second flat plate portion that connects portions of the second flat plate portion that form bases of the plurality of protrusions into a circular shape is smaller than the thickness of other portions of the second flat plate portion.

3. The scalp washer nozzle according to claim 1 or 2, wherein: The scalp cleaning nozzle further comprises: a cleaning opening extending through the second flat plate portion; and The cover opens and closes the opening for cleaning.

4. A scalp cleaner, characterized in that: The scalp cleaner comprises: The scalp cleanser nozzle according to claim 1; an introduction tube connected to the joint portion of the scalp washer nozzle; and The pump discharges hot water sucked from the outside into the introduction pipe.

Images