Cordless brush iron

The compact cordless brush iron addresses the issue of insufficient heat transfer and styling in small devices by using a longitudinal heating element and staggered pins, ensuring effective hair styling and safe handling.

JP2026027774AActive Publication Date: 2026-02-19KOIZUMI SEIKI CORP
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Patent Information

Application Number
JP2024129943
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2026-02-19
Estimated Expiration
2044-08-06

AI Technical Summary

Technical Problem

Conventional cordless hair care devices are not suitable for carrying in a woman's makeup pouch due to their size, and when made compact, they fail to transfer sufficient heat to the hair for styling.

Method used

A compact cordless brush iron with a handle and brush portion, featuring a first heating element extending longitudinally and protruding from the brush surface, multiple second heating elements, and staggered inner and outer pins, allowing for efficient heat transfer and styling even in a compact form.

Benefits of technology

The device transfers sufficient heat to the hair, enabling easy styling, even when compact enough to fit in a makeup pouch, with a unified appearance for easy carrying and safe heating controls.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a cordless brush iron suitable for being carried in a cosmetic pouch or the like.SOLUTION: The cordless brush iron 1 has a handle part 2 and a brush part 3. The brush portion 3 includes a first heating section 6 disposed so as to extend in the longitudinal direction of the brush portion 3 at a central portion in the lateral direction of the brush portion 3 and having a curved surface portion protruding from the surface of the brush portion 3, a plurality of second heating sections 7 erected on the curved surface portion of the first heating section 6 and disposed at intervals so as to be aligned in the longitudinal direction of the brush portion 3, and a plurality of pin sections 8 erected on both sides of the first heating section 6 in the lateral direction of the brush portion 3 and disposed at intervals so as to be aligned in the longitudinal direction of the brush portion 3.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to a compact cordless brush iron. [Background technology]

[0002] Traditionally, even if you style your bangs at home, they can fall apart when you go out due to the weather, humidity, etc., so there has been a demand for a way to style your bangs and part even when you're out and about.

[0003] Portable (cordless) hair care devices have been proposed in the past (see, for example, Patent Document 1). This conventional hair care device is used not only for drying hair while brushing it, but also for massaging the hair and scalp. In other words, this conventional hair care device is both a type of hair dryer and a type of scalp care device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6971157 Summary of the Invention [Problem to be solved by the invention]

[0005] However, while the conventional hair care devices described above are indeed portable (cordless), they are not suitable for carrying around in, for example, a woman's makeup pouch. If a cordless brush iron were made compact enough to fit in a makeup pouch (similar in size to other cosmetics), the size of the heating unit would also be small, resulting in a problem that it would not be able to transfer sufficient heat to the hair, making it difficult to style the hair. However, the conventional hair care devices described above do not take such issues into consideration at all.

[0006] To provide a cordless brush iron that can transfer sufficient heat to hair and easily style hair, even when made compact enough to fit in a cosmetic pouch or the like, and that has been made in consideration of the above-mentioned problems. [Means for solving the problem]

[0007] The cordless brush iron of the present invention is a cordless brush iron having a handle portion and a brush portion, wherein the brush portion is provided with: a first heating portion that is arranged in the central portion of the brush portion in the short side direction so as to extend in the long side direction of the brush portion and has a curved portion that protrudes from the surface of the brush portion; a plurality of second heating portions that are erected on the curved portion of the first heating portion and are spaced apart so as to be aligned in the long side direction of the brush portion; and a plurality of pin portions that are erected on both sides of the first heating portion in the short side direction of the brush portion and are spaced apart so as to be aligned in the long side direction of the brush portion.

[0008] With this configuration, a first heating element extending longitudinally is provided on the surface of the brush unit, allowing the heating element to remain large even when the cordless brush iron is made compact enough to fit in a makeup pouch (similar in size to other cosmetics). This allows sufficient heat to be transferred to hair, making it easy to style. Furthermore, since the first heating element has a curved portion that protrudes from the surface of the brush unit, even with a compact cordless brush iron, this curved portion can be used to easily style hair (for example, to straighten or create beautiful curls in bangs). Furthermore, the heat from the iron evenly straightens the cuticle, allowing you to add shine to your hair even when you're out and about.

[0009] In addition, in the cordless brush iron of the present invention, the pin portion may include a plurality of inner pin portions arranged near the first heating portion and a plurality of outer pin portions arranged outside the inner pin portions, and the tips of the inner pins may be arranged at a higher position than the tips of the outer pins, and the tips of the outer pins may be arranged at a higher position than the tips of the second heating portion.

[0010] According to this configuration, the pin sections are arranged in two rows (one for the inner pin sections and one for the outer pin sections), and the tips of the inner pins are positioned higher than the tips of the outer pins, which in turn are positioned higher than the tips of the second heating sections. Therefore, when moving the brush section to style bangs, etc., the hair (bangs, etc.) is less likely to come off the brush section, and sufficient heat can be transferred to the hair, making it easy to style hair (bangs, etc.) even with a compact cordless brush iron.

[0011] In the cordless brush iron of the present invention, the inner pin portions and the outer pin portions may be arranged alternately in a plan view.

[0012] With this configuration, the two rows of pins (inner pins and outer pins) are arranged so that they are staggered when viewed in a plane, so that hair (such as bangs) is less likely to come off the brush part while the brush part is being moved to style bangs, etc., making it easy to style hair (such as bangs) even with a compact cordless brush iron.

[0013] In addition, the cordless brush iron of the present invention may include a cap portion that can be removably attached to the handle portion so as to cover the brush portion, and when the cap portion is attached to the handle portion, there is no step between the handle portion and the cap portion, and the handle portion and the cap portion may have a stick-like, integrated appearance.

[0014] With this configuration, when the cap is attached to the handle, the cordless brush iron has a unified stick-like appearance, so it does not look out of place when placed in a makeup pouch like other cosmetics. Furthermore, by attaching the cap after heating has stopped, the cordless brush iron can be easily carried in a makeup pouch like other cosmetics.

[0015] In addition, in the cordless brush iron of the present invention, a power switch, a first light source, and a second light source may be provided on the bottom surface of the handle, and when the power switch is pressed and held down while the first light source and the second light source are off, the first light source is turned on without the first heating unit and the second heating unit starting to heat up; when the power switch is pressed and held down while the first light source is on, heating of the first heating unit and the second heating unit starts and the first light source and the second light source are turned on; and when the power switch is pressed and held down while the first light source and the second light source are on, heating of the first heating unit and the second heating unit is stopped and the first light source and the second light source are turned off.

[0016] With this configuration, the first and second heating units will not start heating unless the power switch is pressed and held down and then briefly pressed again. In other words, the first and second heating units will not start heating just by briefly pressing the power switch. This prevents the first and second heating units from accidentally starting heating when the cordless brush iron is carried in a cosmetic pouch or similar with other cosmetics. [Effects of the Invention]

[0017] According to the present invention, even if the cordless brush iron is made compact enough to fit in a cosmetic pouch or the like, the size of the heating part can be secured large, so that sufficient heat can be transmitted to the hair, making it easy to style the hair. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a cordless brush iron (with a cap removed) according to an embodiment of the present invention. [Figure 2] 1 is a perspective view of a cordless brush iron (with a cap attached) according to an embodiment of the present invention. [Figure 3] 1 is an explanatory diagram (plan view) of a brush part of a cordless brush iron according to an embodiment of the present invention. [Figure 4] 1 is an explanatory diagram of a brush part of a cordless brush iron according to an embodiment of the present invention (as viewed from the direction A in FIG. 1). [Figure 5] 1 is an explanatory diagram of a brush part of a cordless brush iron according to an embodiment of the present invention (as viewed from the direction A in FIG. 1). [Figure 6] 1 is an explanatory diagram (a cross-sectional view showing the internal structure) of a brush part of a cordless brush iron according to an embodiment of the present invention. [Figure 7] 2 is a view showing a handle portion of the cordless brush iron according to the embodiment of the present invention (viewed from the direction B in FIG. 1). FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, a cordless brush iron according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, a compact cordless brush iron that can be carried in a makeup pouch or the like by a woman will be described as an example.

[0020] The configuration of a cordless brush iron according to an embodiment of the present invention will be described with reference to the drawings. Figures 1 and 2 are perspective views showing the cordless brush iron according to the present embodiment. As shown in Figures 1 and 2, the cordless brush iron 1 includes a main body 4 having a handle 2 and a brush 3, and a cap 5 detachably attached to the handle 2.

[0021] The cap portion 5 is configured to cover the brush portion 3 when attached to the handle portion 2 (see FIG. 1). When the cap portion 5 is attached to the handle portion 2, there is no step between the handle portion 2 and the cap portion 5, and the handle portion 2 and the cap portion 5 have an integrated stick-like appearance (see FIG. 2). Note that, as an example of the external size of the cordless brush iron 1 of the present application with the cap portion 5 attached, the length of the long side is less than 14 cm and the short side is also less than 2.5 cm. This is smaller than the size of a typical cordless brush iron, and therefore can be carried in a cosmetic pouch or the like.

[0022] Here, the main components of the brush unit 3 will be described with reference to FIGS. 3 to 6. FIGS. 3 to 6 are explanatory diagrams of the brush unit 3 of the cordless brush iron 1. As shown in FIG. 3, the brush unit 3 includes a first heating unit 6 arranged in the center of the brush unit 3 in the short direction so as to extend in the longitudinal direction of the brush unit 3, and a plurality of second heating units 7 arranged at intervals in the longitudinal direction of the brush unit 3. As shown in FIGS. 4 to 6, the first heating unit 6 has a curved portion protruding from the surface of the brush unit 3, and the second heating units 7 are erected on the curved portion of the first heating unit 6. The first heating unit 6 and the second heating unit 7 are made of a material that efficiently transfers heat, such as aluminum or an aluminum alloy with high thermal conductivity, but are not limited to aluminum or an aluminum alloy. The first heating unit 6 and the second heating unit 7 can also be ceramic-coated. The maximum temperature of the heating units is, for example, 180°C.

[0023] Also, as shown in FIGS. 3 to 6, the brush portion 3 is provided with a plurality of pin portions 8. The plurality of pin portions 8 are erected on both sides of the first heating portion 6 in the short side direction of the brush portion 3 and are arranged at intervals so as to be aligned in the longitudinal direction of the brush portion 3. The pin portion 8 includes a plurality of inner pin portions 9 disposed near the first heating portion 6 and a plurality of outer pin portions 10 disposed outside the inner pin portions 9. In other words, the first heating portion 6 is provided at the center in the longitudinal direction of the brush portion, and two rows of pins (inner pins 9 and outer pins 10) are arranged on both sides of the heating portion, respectively. Among the two rows of pins, the pins closer to the heating portion are the inner pins 9, and the outer pins 10 are arranged adjacent to the inner pins and at a position farther from the heating portion. The inner pins 9 and the outer pins 10 are arranged alternately so as to be staggered in a plan view with the heating portion as the center. The pin portion 8 (inner pin portion 9 and outer pin portion 10) is, for example, made of resin. The pin portion 8 (inner pin portion 9 and outer pin portion 10) can also be said to be a non-heating portion.

[0024] FIG. 4 is a view of the cordless brush iron 1 as seen from the A direction in FIG. 1. Further, FIG. 4 is a view showing the heights (Hi, Ho, Hh) of the respective pins and the second heating portion 7 with reference to C. As shown in FIG. 4, the tip Hi of the inner pin is arranged at a position higher than the tip Ho of the outer pin, and the tip Ho of the outer pin is arranged at a position higher than the tip Hh of the second heating portion 7. That is, it is set so that Hi>Ho>Hh. Also, the length L1 of the first heating portion 6 is smaller than the length L2 of the second heating portion 7. That is, it is set so that L1<L2.

[0025] FIG. 5 is a view of the cordless brush iron 1 as viewed from direction A in FIG. 1. As shown in FIG. 5, the shape of the brush unit 3 is composed of a combination of multiple curved shapes (a curved shape with curvature R2, a curved shape with curvature R3, a curved shape with curvature R4, and a curved shape with curvature R5). The respective curvatures are, for example, R2 = 3.5 mm, R3 = 5 mm, R4 = 7 mm, and R5 = 3.5 mm. The curved portion of the first heating unit 6 has a curved shape with curvature R1, for example, R1 = 5.8 mm. This R1 is the curved portion that protrudes from the surface of the brush unit 3, and the first heating unit has a height of L1. These multiple curved shapes can further style hair heated by the first heating unit 6 and the second heating unit 7.

[0026] FIG. 6 is a view of the cordless brush iron 1 as viewed from direction A in FIG. 1. Furthermore, FIG. 6 is a cross-sectional view of the central portion of the brush unit 3 in the longitudinal direction in the short direction. Note that FIG. 6 shows only parts necessary for explanation. As shown in FIG. 6, the first heating unit 6 has a curved shape. In this case, the heat source unit 11 of the first heating unit 6 has a curved shape that follows the curved shape of the first heating unit 6, and is disposed inside the brush unit 3 so as to be adjacent to the first heating unit 6 (see FIG. 6).

[0027] Next, referring to FIG. 7, the essential parts of the handle portion 2 will be described. FIG. 7 is a view of the cordless brush iron 1 as seen from direction B in FIG. 1. FIG. 7 is also an explanatory diagram (bottom view) of the handle portion 2 of the cordless brush iron 1. As shown in FIG. 7, the bottom surface of the handle portion 2 is provided with a charging port 12, a power switch 13, a first light source 14, and a second light source 15. The first light source 14 and the second light source 15 can be configured, for example, with LEDs. Furthermore, although not shown, a battery is provided in the handle portion 2, and the cordless brush iron 1 operates using energy stored in this battery. The battery can be charged by connecting a USB rechargeable device, such as USB-Type C, to the charging port 12. Note that the charging method is not limited to USB-Type C, and other methods are also possible.

[0028] When using the cordless brush iron 1 of this embodiment, first, with the first light source 14 and the second light source 15 turned off, pressing and holding the power switch 13 turns on the first light source 14. At this time, the first heating unit 6 and the second heating unit 7 have not yet started heating.

[0029] Next, when the power switch 13 is pressed briefly while the first light source 14 is on, the first heating unit 6 and the second heating unit 7 start heating, and the first light source 14 and the second light source 15 turn on. In this way, the cordless brush iron 1 can be used.

[0030] While the cordless brush iron 1 is heating, the first light source 14 and the second light source 15 are on, and if the power switch 13 is pressed and held down, the heating of the first heating unit 6 and the second heating unit 7 is stopped and the first light source 14 and the second light source 15 are turned off. In this way, the heating of the cordless brush iron 1 is finished.

[0031] According to the cordless brush iron 1 of this embodiment, the first heating element 6 is provided on the surface of the brush unit 3, extending in the longitudinal direction. This allows the cordless brush iron 1 to be compact enough to fit in a makeup pouch (similar in size to other cosmetics), while still maintaining a large heating element. This allows sufficient heat to be transferred to hair, making it easy to style. Furthermore, the first heating element 6 has a curved portion that protrudes from the surface of the brush unit 3. This curved portion can be used to easily style hair (for example, to straighten or create beautiful curls in bangs), even with a compact cordless brush iron 1.

[0032] In addition, in this embodiment, the pin sections 8 are configured in two rows (two rows of inner pin sections 9 and outer pin sections 10), and the tips of the inner pins are positioned higher than the tips of the outer pins, which are positioned higher than the tips of the second heating section 7.Therefore, when moving the brush section 3 to style the bangs, etc., the hair (bangs, etc.) is less likely to come off the brush section 3, and sufficient heat can be transmitted to the hair, making it easy to style the hair (bangs, etc.) even with a compact cordless brush iron 1.

[0033] In addition, in this embodiment, the two rows of pin portions 8 (inner pin portions 9 and outer pin portions 10) are arranged so that they are staggered in a planar view, so that hair (bangs, etc.) is less likely to come off the brush portion 3 while moving the brush portion 3 to style bangs, etc., making it easy to style hair (bangs, etc.) even with a compact cordless brush iron 1.

[0034] Furthermore, in this embodiment, when the cap 5 is attached to the handle 2, the cordless brush iron 1 has a stick-like, integrated appearance, so it does not look out of place when placed in a makeup pouch or the like along with other cosmetics. This makes the cordless brush iron 1 easy to carry around in a makeup pouch or the like along with other cosmetics.

[0035] Furthermore, in this embodiment, the first heating unit 6 and the second heating unit 7 will not start heating unless the power switch 13 is pressed and held down and then briefly pressed again. In other words, the first heating unit 6 and the second heating unit 7 will not start heating simply by briefly pressing the power switch 13. This prevents the first heating unit 6 and the second heating unit 7 from starting heating by mistake when the cordless brush iron 1 is carried in a cosmetic pouch or the like like other cosmetics.

[0036] Although the embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these, and can be modified and changed according to the purpose within the scope of the claims. [Industrial Applicability]

[0037] As described above, the cordless brush iron according to the present invention has the effect of being suitable for carrying in a cosmetic pouch or the like by women, and is useful as a compact cordless brush iron or the like. [Explanation of symbols]

[0038] 1 Cordless Brush Iron 2 Handle 3 Brush section 4 Main unit 5 Cap part 6 1st heating section 7 Second heating section 8-pin section 9 Inner pin 10 Outer pin part 11 Heat source part 12 Charging port 13 Power switch 14 1st light source 15 Second light source

Claims

1. A cordless brush iron having a handle and a brush, The brush part is a first heating section disposed in a central portion of the brush section in a lateral direction thereof so as to extend in a longitudinal direction of the brush section, the first heating section having a curved surface portion protruding from a surface of the brush section; a plurality of second heating sections provided upright on the curved surface of the first heating section and arranged at intervals so as to be aligned in the longitudinal direction of the brush section; a plurality of pin portions provided upright on both sides of the first heating portion in a short-side direction of the brush portion and arranged at intervals so as to be aligned in a longitudinal direction of the brush portion; A cordless brush iron.

2. the pin portions include a plurality of inner pin portions disposed near the first heating portion and a plurality of outer pin portions disposed outside the inner pin portions, The tip of the inner pin is positioned higher than the tip of the outer pin, A tip of the outer pin is positioned higher than a tip of the second heating unit. The cordless brush iron according to claim 1.

3. The cordless brush iron according to claim 2 , wherein the inner pin portions and the outer pin portions are arranged alternately in a plan view.

4. a cap portion detachably attached to the handle portion so as to cover the brush portion; 2. The cordless brush iron according to claim 1, wherein when the cap portion is attached to the handle portion, there is no step between the handle portion and the cap portion, and the handle portion and the cap portion have a stick-like, integrated appearance.

5. A power switch, a first light source, and a second light source are provided on the bottom surface of the handle, When the power switch is pressed and held down while the first light source and the second light source are turned off, the first light source is turned on without the first heating unit and the second heating unit starting to heat, When the power switch is pressed briefly while the first light source is turned on, heating of the first heating unit and the second heating unit is started, and the first light source and the second light source are turned on; 2. The cordless brush iron according to claim 1, wherein when the power switch is pressed and held down while the first light source and the second light source are turned on, heating of the first heating unit and the second heating unit is stopped and the first light source and the second light source are turned off.

Citation Information

Patent Citations

  • Hair Care Devices

    JP6971157B2