JP2024031604A - beauty equipment - Google Patents

Abstract

An object of the present invention is to reduce the influence of heat generated by a light emitting element. A beauty device 1 includes a casing 10 having a first surface 110 that is a contact surface that comes into contact with the skin, a metal substrate 200 on which a heat sink 220 that is a heat dissipation member is provided on the back surface, and a surface of the metal substrate 200. It includes a plurality of light emitting elements 210 provided and a window 111 provided on the first surface 110, which is a contact surface, through which light emitted from the plurality of light emitting elements 210 is emitted. [Selection diagram] Figure 1

Description

The present invention relates to a beauty device.

Various beauty devices using LEDs (Light Emitting Diodes) as light sources have been proposed, and examples include the techniques disclosed in Patent Document 1, Patent Document 2, and Patent Document 3. Patent Document 1 describes the invention of a facial hair growth device using monochrome LEDs. Patent Document 2 discloses a technique for removing acne by irradiating light from an LED to a part of the skin where acne is present. Patent Document 3 discloses an invention of a skin beautifying device that achieves sterilization, cleansing, and skin beautification effects by irradiating the skin surface and pores with a light flux emitted from a sterilizing light source including a red LED or a blue LED to cause the natural death of bacteria. is listed.

International Publication No. 2008/084764 Japanese Patent Application Publication No. 7-100219 JP2017-51588A

In a beauty device using LEDs, a plurality of LEDs are arranged side by side in order to irradiate light onto a relatively wide range of the skin surface. When a large number of LEDs are arranged, problems such as deterioration of the LEDs themselves or surrounding components may occur due to the effects of heat generated by the LEDs.

An object of the present invention is to provide a beauty device that can reduce the effects of heat generated by light emitting elements.

A beauty device according to a first aspect of the present invention includes: a housing having a contact surface that contacts the skin; a metal substrate having a heat dissipating member on the back surface; and a plurality of light emitting elements provided on the surface of the metal substrate. , a window portion provided on the contact surface through which light emitted from the plurality of light emitting elements exits.
According to the beauty device of the first aspect, the heat generated from the light emitting element is transmitted to the metal substrate and further transmitted to the heat radiating member, so that the heat is easily dissipated via the heat radiating member.
Further, by changing the characteristics of a plurality of light emitting elements, applications and functions can be appropriately selected or multiplexed. Furthermore, the irradiation energy density and uniformity within the irradiation area of the skin can be increased. Furthermore, since the heat dissipation performance is high, even when the user holds the case in his hand and uses it, he does not feel the heat.

In a preferred embodiment, the metal substrate includes a first metal substrate and a second metal substrate each provided with one or more light emitting elements, and the first metal substrate and the second metal substrate are connected to the contact surface and the second metal substrate. The first metal substrate and the second metal substrate may be arranged such that angles formed with the respective substrate surfaces are different from each other.
According to the beauty device of this aspect, it is possible to simultaneously irradiate light of different powers or light of optical axes.

In a preferred embodiment, the metal substrate includes a first metal substrate and a second metal substrate each provided with one or more light emitting elements, and the first metal substrate and the second metal substrate They may be arranged at different distances from each other.
According to the beauty device of this aspect, it is possible to simultaneously irradiate light of different powers or light of optical axes.

In a preferred embodiment, the first metal substrate and the second metal substrate are arranged substantially parallel to each other, and the distance from the first metal substrate to the contact surface is less than the distance from the second metal substrate to the contact surface. The first metal substrate may be located outside the second metal substrate when viewed from the contact surface.

In a preferred embodiment, one condensing lens may be provided in the window.

In a preferred embodiment, some of the plurality of light emitting elements may be arranged such that their optical axes are inclined inward by a predetermined angle with respect to the contact surface.

In a preferred embodiment, the plurality of light emitting elements are arranged in a predetermined area according to a predetermined rule, and a first area including the center of the predetermined area includes a first light emitting element that emits light of a first wavelength. A second region provided outside the first region may include a second light emitting element that emits light of a second wavelength shorter than the first wavelength.

In a preferred embodiment, the first wavelength may be 800 to 950 nm, and the second wavelength may be 500 to 800 nm.

In a preferred embodiment, the plurality of light emitting elements may be arranged in a matrix, radially, or crosswise.

In a preferred embodiment, the light emitting element may include one surface emitting laser and a plurality of LED elements arranged around the one surface emitting laser.

FIG. 1 is a diagram showing the appearance of a beauty device according to a first embodiment. FIG. 2 is a diagram showing a cross section near the first surface (contact surface) of the beauty device according to the first embodiment, and a diagram showing the arrangement of light emitting elements on the metal substrate. FIG. 3 is a diagram showing an example of light emitting characteristics of a light emitting element of the beauty device according to the first embodiment. FIG. 7 is a diagram showing a cross section near the first surface (contact surface) of the beauty device according to the second embodiment, and a diagram showing the arrangement of light emitting elements on the metal substrate. FIG. 7 is a diagram showing a cross section near the first surface (contact surface) of a beauty device according to a third embodiment, and a diagram showing the arrangement of light emitting elements on a metal substrate. It is a diagram showing a cross section near the first surface (contact surface) of the beauty device according to the fourth embodiment. FIG. 7 is a diagram showing a cross section near the first surface (contact surface) of the beauty device according to the fifth embodiment. FIG. 7 is a diagram showing a cross section near the first surface (contact surface) of a beauty device according to a sixth embodiment, and a diagram showing the arrangement of light emitting elements on a metal substrate. FIG. 7 is a diagram illustrating a cross section near the first surface (contact surface) of a beauty device according to a seventh embodiment and a diagram illustrating the arrangement of light emitting elements on a metal substrate. It is a figure showing arrangement (radial shape, cross shape, rectangular shape) of light emitting elements by a modification. It is a figure showing arrangement of light emitting elements (radial arrangement, criss-cross arrangement, and rectangular arrangement of two types of light emitting elements) according to a modified example. It is a figure showing arrangement of light emitting elements (square shape and rectangular arrangement of two types of light emitting elements) according to a modified example.

The beauty devices of each embodiment described below are intended to treat acne, reduce wrinkles and sagging, reduce dullness and age spots, remove unwanted hair, promote blood circulation, and achieve various other beauty effects. be able to. Hereinafter, a beauty device used for removing unwanted hair (hair removal) will be described as an example. However, the beauty device of the following embodiments can be applied to any beauty device that irradiates light onto the skin surface.
Furthermore, various technically preferable limitations are attached to each embodiment described below. However, embodiments of the present invention are not limited to the forms described below.

[First embodiment]
FIG. 1 is a perspective view showing the appearance of a beauty device 1 according to the first embodiment. The beauty device 1 is a device that removes so-called unwanted hair (hair removal) by irradiating light onto a skin surface such as a limb or face. As shown in FIG. 1, the beauty device 1 includes a housing 10 and a light emitting section 20 provided in the housing 10. The casing 10 has a first surface 110 formed in a rectangular shape with rounded corners, and a second surface formed in approximately the same shape as the first surface 110 (with respect to the first surface 110 on the front side, side surface) and a side wall 120 provided along the outer periphery of the first surface 110 and the second surface. Note that in FIG. 1, illustration of the second surface is omitted. An example of a constituent material of the housing 10 is resin.

A light emitting unit 20 that emits light for removing unwanted hair or skin care is provided on the side of the housing 10 that is closer to the first surface 110. Near the center of the first surface 110, a window 111 made of a transparent member is provided. The light emitted from the light emitting section 20 passes through the window section 111, is emitted to the outside of the housing 10, and is irradiated onto the skin surface.

The first surface 110 becomes a contact surface that comes into contact with the skin surface of the treatment target site (in the case of hair removal, the hair removal site). At the four corners of the first surface 110, roller members 310 are provided to improve the sliding of the first surface 110 (ie, the contact surface) against the skin surface of the treatment target area. The roller member 310 is formed in a spherical shape, and is supported with respect to the housing 10 so as to rise and fall in the normal direction of the first surface 110, that is, in the Z-axis direction in FIG. Note that the roller member 310 is not an essential component of the beauty device of the present invention and may be omitted.

A power supply circuit that supplies operating power to the light emitting section 20 is built into the housing 10 . In FIG. 1, illustration of the power supply circuit is omitted. The side wall 120 includes a switch 410 for switching electrical connection/disconnection between the light emitting section 20 and the power supply circuit, and a plurality of ventilation holes 510 for introducing outside air into the casing 10 to cool the light emitting section 20A. and is provided.

As shown in FIG. 1, the light emitting section 20 includes, for example, 16 light emitting elements 210. Sixteen light emitting elements 210 are arranged on the surface of metal substrate 200. The plane of the metal substrate 200 on which the light emitting elements 210 are arranged is substantially parallel to the first surface 110 of the housing 10 .

In this embodiment, the 16 light emitting elements 210 included in the light emitting unit 20 are four in the Y-axis direction and four in the X-axis direction so that the light irradiation area on the skin surface of the hair removal area is substantially rectangular. They are arranged in a matrix of four pieces. Hereinafter, the direction along the Y-axis will be referred to as the column direction, and the direction along the X-axis will be referred to as the row direction. That is, in this embodiment, the 16 light emitting elements 210 included in the light emitting section 20A are arranged in 4 rows and 4 columns. In this way, in this embodiment, 16 light emitting elements 210 are arranged on the metal substrate 200, but the number of light emitting elements arranged on the metal substrate 200 may be two or more.

FIG. 2 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1. More specifically, FIG. 2(A) is a partial sectional view showing a part of the cross section of the beauty device 1 taken along the line AA in FIG. 1. Moreover, FIG. 2(B) is a plan view of the metal substrate 200 on which 16 light emitting elements 210 are arranged, viewed from the first surface 110 side.

The light emitting element 210 is a COB (chip on board) LED (Light Emitting Diode). The metal substrate 200 is, for example, an aluminum substrate formed into a substantially rectangular shape. In this embodiment, 16 light emitting elements 210 are mounted directly on one metal substrate 200. That is, no other member is interposed between the metal substrate 200 and the light emitting element 210.

As shown in FIG. 2A, on the back side of the metal substrate 200 on which the plurality of light emitting elements 210 are arranged (the side opposite to the direction of light irradiation from the light emitting elements 210), the entire back side of the metal substrate 200 and A heat sink 220, which is a heat dissipating member, is provided. The light emitting element 210 that emits light when supplied with operating power generates heat, and this heat is transmitted to the heat sink 220 via the metal substrate 200. Although it is preferable that the heat sink 220 be in contact with the entire back surface of the metal substrate 200, there may be a portion that is not in contact with the entire back surface of the metal substrate 200.

In this embodiment, the light emitting element 210 uses a COB LED, which is different from the case where a so-called bullet-shaped LED in which each LED element is provided with a lens or an SMD (surface mount type) LED is used. A heat dissipation member (heat sink 220 in this embodiment) can be provided on the entire back surface of the substrate (metal substrate 200 in this embodiment) on which the LED is mounted. Therefore, the heat generated from the light emitting element 210 and the metal substrate 200 can be efficiently transferred to the heat radiating member. The heat transmitted to the heat radiating member is radiated by heat exchange with the outside air that has flowed into the housing 10 through the plurality of ventilation holes 510.

Furthermore, in this embodiment, since the light emitting element 210 is placed directly on the metal substrate 200, heat generated from the light emitting element 210 is easily transmitted to the metal substrate 200. Therefore, heat dissipation is promoted.

As shown in FIG. 2(B), the 16 light emitting elements 210 are arranged substantially adjacent to each other. In FIG. 2B, the four light emitting elements 210 arranged in the X-axis direction (row direction) in the top row are arranged at equal intervals on a substantially straight line along the X-axis direction. Similarly, the four light emitting elements 210 arranged in the X-axis direction in the second row are also arranged at equal intervals on a substantially straight line along the X-axis direction. The same applies to the four light emitting elements 210 arranged in the third and fourth rows.

Also in the Y-axis direction (column direction), the four light emitting elements 210 arranged in the leftmost row are arranged at equal intervals on substantially a straight line along the Y-axis direction. In the other three columns as well, the four light emitting elements 210 arranged in the column direction are arranged at equal intervals on substantially a straight line along the Y-axis direction.

The spacing between the light emitting elements 210 adjacent to each other in the X-axis direction and the spacing between the light emitting elements 210 adjacent to each other in the Y-axis direction are preferably substantially the same, but may be different.
As described above, the 16 light emitting elements 210 are arranged at predetermined rules (at equal intervals) within the rectangular area of the metal substrate 200.

FIG. 3 is a diagram showing an example of light emission characteristics showing the wavelength of light emitted by the light emitting element 210. In FIG. 3, the intensity of each wavelength of light emitted by the light emitting element 210 when receiving operating power from the power supply circuit is shown as a relative intensity with respect to a peak value. The light emitting element 210, which is supplied with operating power from the power supply circuit, emits light with a wavelength of 800 nm to 950 nm, more preferably 808 nm to 860 nm, as shown in FIG. This is because light with wavelengths within these ranges is most effective for unwanted hair care. As shown in FIG. 3, the intensity of light having a wavelength around 850 nm is highest.
Note that in this specification, as described above, when a range is described, for example, "800 nm to 950 nm," it may also indicate "800 nm or more and less than 950 nm."

[Second embodiment]
Next, a beauty device according to a second embodiment will be explained. Although the appearance of the beauty device according to the second embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the second embodiment will be hereinafter referred to as beauty device 1A.

FIG. 4 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1A. More specifically, FIG. 4(A) is a partial sectional view showing a part of the cross section of the beauty device 1A taken along the line AA in FIG. 1, similar to the beauty device 1 in FIG. 1. Moreover, FIG. 4(B) is a perspective view of two metal substrates viewed from the first surface 110 side.

The light emitting section 20A includes two metal substrates 200 and 201. The metal substrate 200 is similar to the first embodiment, and is an aluminum substrate formed into a substantially rectangular shape, on which 16 light emitting elements 210 (COB LEDs) are arranged. When viewed from the first surface 110 side, the metal substrate 201 has a shape that surrounds the metal substrate 200, has a substantially rectangular outer periphery, and has a substantially rectangular opening formed inside. When viewed from the first surface 110 side, the arrangement is such that the metal substrate 200 is provided within the opening of the metal substrate 201. Like the metal substrate 200, the metal substrate 201 is, for example, an aluminum substrate.

The light emitting unit 20A of the beauty device 1A of the second embodiment includes, for example, 16 light emitting elements 210 (same as the first embodiment) arranged on a metal substrate 200 and 20 light emitting elements 210 arranged on a metal substrate 201. A light emitting element 211 is provided. The twenty light emitting elements 211 are arranged in one column (or one row) along each side of the outer periphery of the metal substrate 201. Six pieces are lined up along each side. Like the light emitting element 210, the light emitting element 211 is a COB (chip on board) LED (Light Emitting Diode), and the light emitting element 211 is mounted directly on the metal substrate 201.

Similarly to the first embodiment, on the back side of the metal substrate 200 on which the light emitting element 210 is arranged and the metal substrate 201 on which the light emitting element 211 is arranged (the side opposite to the direction of light irradiation from the light emitting elements 210 and 211). A heat sink 221, which is a heat radiating member, is provided in contact with the entire back surface of the metal substrates 200 and 201.

With the above configuration including the light emitting elements 210 and 211 using COB LEDs, the metal substrates 200 and 201, and the heat sink 221, the same effect as the first embodiment can be obtained regarding heat radiation.

The plane on which the light emitting element 210 of the metal substrate 200 is arranged and the plane on which the light emitting element 211 of the metal substrate 201 is arranged are substantially parallel, and these planes are also substantially parallel to the first surface 110 of the casing 10. It is.

The metal substrate 200 and the metal substrate 201 have different distances from the first surface 110 of the housing 10. In this embodiment, the distance from the metal substrate 201 to the first surface 110 is longer than the distance from the metal substrate 200 to the first surface 110. When viewed from the first surface 110 side, the metal substrate 201 is located on the outside of the metal substrate 200.

The six light emitting elements 211 arranged on both sides of the metal substrate 201 in the X-axis direction are arranged at equal intervals on a substantially straight line along the X-axis. The six light emitting elements 211 arranged on both sides of the metal substrate 201 in the Y-axis direction are arranged at equal intervals on a substantially straight line along the Y-axis.

Similarly to the first embodiment, the light emitting element 210 has a light emitting property in which the intensity of light having a wavelength of 800 nm to 950 nm, preferably 808 nm to 860 nm is highest. The wavelength of the light emitted from the light emitting element 211 is set to be shorter than the wavelength of the light emitted from the light emitting element 210. For example, it is assumed that the light emitting element 211 has a light emitting characteristic in which the intensity of light having a wavelength of 500 nm to 800 nm is highest. This is because light with a wavelength of 500 nm to 800 nm is effective for skin care.

Hereinafter, the wavelength of the light emitted from the light emitting element 210, 800 nm to 950 nm (preferably 808 nm to 860 nm), will be referred to as a first wavelength, and the wavelength of the light emitted from the light emitting element 211, 500 nm to 800 nm, will be referred to as a second wavelength. There are cases where

As described above, in this embodiment, the plurality of light emitting elements 210 and 211 are arranged in a predetermined area on the metal substrates 200 and 201 according to a predetermined rule. A light emitting element 210 that emits light of the first wavelength is provided in an area on the metal substrate 200 including the center of a predetermined area to be arranged, and a light emitting element 210 that emits light of the first wavelength is provided in an area on the metal substrate 201 outside the metal substrate 200. The configuration is such that a light emitting element 211 that emits light of a second wavelength shorter than the first wavelength is provided.

Regarding the arrangement of the plurality of light emitting elements 210 and 211, the light emitting element 211 that emits light of the second wavelength is provided in a region on the metal substrate 200 that includes the center of the predetermined region, and A light emitting element 210 that emits light of a first wavelength longer than the second wavelength may be provided in a region on the metal substrate 201.

Further, in this embodiment, the distance from the metal substrate 201 to the first surface 110 is made longer than the distance from the metal substrate 200 to the first surface 110, but the distance from the metal substrate 201 to the first surface 110 is The distance may be shorter than the distance from the metal substrate 200 to the first surface 110. In this case, the distance from the light emitting element 211 to the window part 111 is shorter than the distance from the light emitting element 210 to the window part 111.

In this embodiment, the light emitting element 210 that emits light of a first wavelength that is effective for hair removal is placed at a close distance from the skin and irradiates the skin with high output in a narrow range, thereby increasing the hair removal effect. be able to.
In addition, by arranging the light emitting element 211 that emits light of the second wavelength, which is effective for skin care, at a distance from the skin compared to the light emitting element 210, it is possible to irradiate the skin with low output over a wide range. It can enhance the effectiveness of care.

Note that in this embodiment, 16 light emitting elements 210 are arranged on the metal substrate 200 and 20 light emitting elements 211 are arranged on the metal substrate 201, but the number of light emitting elements arranged on each metal substrate may be one or more.

[Third embodiment]
Next, a beauty device according to a third embodiment will be explained. Although the appearance of the beauty device according to the third embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the third embodiment will be hereinafter referred to as beauty device 1B.

FIG. 5 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1B. More specifically, FIG. 5(A) is a partial sectional view showing a part of the cross section of the beauty device 1A taken along the line AA in FIG. 1, similar to the beauty device 1 in FIG. Further, FIG. 5(B) is a perspective view of the metal substrate viewed from the first surface 110 side.

The light emitting section 20B includes a metal substrate 200 and four metal substrates 202a, 202b, 202c, and 202d provided around the metal substrate 200. The metal substrate 200 is similar to the first embodiment, and is an aluminum substrate formed into a substantially rectangular shape, on which 16 light emitting elements 210 (COB LEDs) are arranged. The metal substrates 202a to 202d are substantially rectangular (rectangular) substrates provided outside each side (four sides) of the outer periphery of the metal substrate 200 along each side. Like the metal substrate 200, the metal substrates 202a to 202d are, for example, aluminum substrates.

The metal substrate 200 is arranged substantially parallel to the first surface 110, but the metal substrates 202a to 202d are arranged at an angle with respect to the first surface 110 so that their surfaces face inward (toward the metal substrate 200 side). Ru. As described above, in this embodiment, the metal substrates 202a to 202d are arranged to be inclined inward, but the angle between the first surface 110 and the substrate surface of the metal substrate 200, and the angle between the first surface 110 and the metal substrate 200 are different from each other. It suffices if they are arranged so that the angles they form with 202a to 202d are different.

The light emitting unit 20B of the beauty device 1B of the third embodiment includes, for example, 16 light emitting elements 210 (same as the first embodiment) arranged on a metal substrate 200, and four light emitting elements 210, for example, arranged on each of metal substrates 202a to 202d. For example, 16 light emitting elements 211 are arranged one by one. The 16 light emitting elements 211 are arranged in one column (or one row) along each side of the outer periphery of the metal substrate 201, and four light emitting elements are arranged on each of the metal substrates 202a to 202d. Like the light emitting element 210, the light emitting element 211 is a COB (chip on board) LED (Light Emitting Diode), and the light emitting element 211 is mounted directly on the metal substrates 202a to 202d.

Similar to the first embodiment, on the back side of the metal substrates 200, 202a to 202d on which the light emitting elements 210 are arranged (the side opposite to the direction of light irradiation from the light emitting elements 210 and 211), the metal substrates 200 and 202a to A heat sink 223, which is a heat dissipation member, is provided in contact with the entire back surface of d.

With the above configuration including the light emitting elements 210, 211 using COB LEDs, the metal substrates 200, 202a to 202d, and the heat sink 223, the same effect as the first embodiment can be obtained regarding heat radiation.

The four light emitting elements 211 arranged on each of the metal substrates 202a to 202d are arranged at equal intervals on a substantially straight line along the side direction of the outer periphery of the metal substrate 200.
The wavelength of the light emitted from the light emitting element 210 may be the first wavelength described above (800 nm to 950 nm, preferably 808 nm to 860 nm), as in the first embodiment. The wavelength of the light emitted from the light emitting element 211 may be shorter than that of the light emitted from the light emitting element 210, for example, the second wavelength (500 nm to 800 nm) described above.

As described above, in this embodiment, the plurality of light emitting elements 210 and 211 are arranged in a predetermined area on the metal substrates 200 and 202a to 202d according to a predetermined rule. A light emitting element 210 that emits light of the first wavelength is provided in a region on the metal substrate 200 including the center of a predetermined region to be arranged, and The region is provided with a light emitting element 211 that emits light of a second wavelength shorter than the first wavelength.

Regarding the arrangement of the plurality of light emitting elements 210 and 211, the light emitting element 211 that emits light of the second wavelength is provided in a region on the metal substrate 200 that includes the center of the predetermined region, and A light emitting element 210 that emits light of a first wavelength longer than the second wavelength may be provided in a region on the metal substrates 202a to 202d.

Furthermore, in this embodiment, 16 light emitting elements 210 are arranged on the metal substrate 200, and four light emitting elements 211 are arranged on each of the metal substrates 202a to 202d. The number of elements may be one or more.

Furthermore, in this embodiment, the optical axis of the light emitted from the light emitting elements 210 arranged on the metal substrate 200 is substantially perpendicular to the first surface 110, but The optical axis of the light emitted from the light emitting element 211 is arranged so as to be inclined inward by a predetermined angle with respect to the first surface 110. Therefore, according to this embodiment, the light from the light emitting element 211 provided on the outer peripheral side of the light emitting section 20B can be emitted toward the center.

[Fourth embodiment]
Next, a beauty device according to a fourth embodiment will be explained. Although the appearance of the beauty device according to the fourth embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the fourth embodiment will be hereinafter referred to as beauty device 1C.

FIG. 6 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1C. More specifically, like the beauty device 1 in FIG. 1, FIG. 6 is a partial sectional view showing a part of the cross section of the beauty device 1C taken along the line AA in FIG.

In FIG. 6, 16 light emitting elements 210 are arranged on the metal substrate 204 of the light emitting section 20C, as in the first embodiment. The metal substrate 204 has a curved surface that is convex with respect to the light emission direction of the 16 light emitting elements 210. More specifically, the cross section of the metal substrate 204 along the X-axis direction (or the Y-axis direction) has a curved shape with the central portion convex in the first surface 110 direction. That is, it has an arch-like curved surface.
Note that in this embodiment, 16 light emitting elements 210 are arranged on the metal substrate 204, but the number of light emitting elements arranged on the metal substrate 204 may be two or more.

Similar to the first embodiment, a heat sink 224 that is in contact with the entire back surface of the metal substrate 204 is provided on the back side of the metal substrate 204 on which the light emitting element 210 is arranged (the side opposite to the direction of light irradiation from the light emitting element 210). It is being Since the metal substrate 204 has a curved surface that is convex in the direction of the first surface 110, the surface of the heat sink 224 that contacts the metal substrate 204 has a curved surface that is convex in the direction of the first surface 110, similar to the metal substrate 204. It has a curved surface.

With the above configuration including the light emitting element 210 using a COB LED, the metal substrate 204, and the heat sink 224, the same effects as in the first embodiment can be obtained regarding heat radiation.

As described above, by providing the metal substrate 204 having a convex curved surface with respect to the light emitting direction of the light emitting element 210, the emitted light from the light emitting element 210 can be spread over a wide range of the skin surface compared to the first embodiment. can be irradiated to achieve hair removal effects over a wider range of areas.

[Fifth embodiment]
Next, a beauty device according to a fifth embodiment will be explained. Although the appearance of the beauty device according to the fifth embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the fifth embodiment will be hereinafter referred to as beauty device 1D.

FIG. 7 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1D. More specifically, like the beauty device 1 in FIG. 1, FIG. 7 is a partial sectional view showing a part of the cross section of the beauty device 1D taken along the line AA in FIG.

The light emitting unit 20D includes a metal substrate 200 on which a plurality of (for example, 16) light emitting elements 210 are provided, and a condenser lens 601 provided in the window 111 of the first surface 110 of the housing 10. The metal substrate 200 and the light emitting element 210 are the same as those in the first embodiment.

The condensing lens 601 is provided in the window 111 of the housing 10. That is, in place of the transparent member forming the window portion 111 in the first embodiment described above, a condenser lens 601 is provided in this embodiment. The condensing lens 601 is for condensing light emitted from a plurality of light emitting elements and irradiating it onto the skin surface. Although the condensing lens 601 is shown as one convex lens in FIG. 7, it may be one condensing optical system composed of a plurality of lenses.

A heat sink 220 that is a heat dissipation member that is in contact with the entire back surface of the metal substrate 200 is provided on the back side of the metal substrate 200 (the side opposite to the direction of light irradiation from the light emitting element 210). The heat sink 220 is similar to that in the first embodiment. With the above configuration including the light emitting element 210 using a COB LED, the metal substrate 200, and the heat sink 220, the same effect as the first embodiment can be obtained regarding heat radiation.

In this embodiment, the light from the plurality of light emitting elements 210 can be condensed by the condenser lens 601 and irradiated onto the skin surface. The energy to be irradiated can be increased.

[Sixth embodiment]
Next, a beauty device according to a sixth embodiment will be explained. Although the appearance of the beauty device according to the sixth embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the sixth embodiment will be hereinafter referred to as beauty device 1E.

FIG. 8 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1E. More specifically, FIG. 8(A) is a partial sectional view showing a part of the cross section of the beauty device 1E taken along the line AA in FIG. 1, similar to the beauty device 1 in FIG. Further, FIG. 8(B) is a perspective view of the metal substrate viewed from the first surface 110 side.

The light emitting section 20E includes a metal substrate 206. The metal substrate 206 is, for example, an aluminum substrate, and the center portion has a substantially rectangular planar shape, and the peripheral portion has a shape that is inclined inward with respect to the plane of the center portion. Sixteen light emitting elements 210 are arranged in the central portion. Four light emitting elements 211 (total 16 pieces) are arranged in each of the four inclined peripheral parts.

That is, the surface on which the light emitting element 210 in the central part of the metal substrate 206 is arranged is a plane substantially parallel to the first surface 110 of the casing 10, and the surface on which the light emitting element 211 in the peripheral part is arranged is a plane parallel to the first surface 110 of the casing 10. The surface is inclined with respect to the first surface 110 of 10. The light emitting elements 210 and 211 are similar to those in the second embodiment.

Similar to the first embodiment and the second embodiment, the metal substrate 206 is provided on the back side of the metal substrate 206 on which the light emitting elements 210 and 211 are arranged (the side opposite to the direction of light irradiation from the light emitting elements 210 and 211). A heat sink 226, which is a heat radiating member, is provided to be in contact with the entire back surface of the camera.

As described above, in this embodiment, the plurality of light emitting elements 210 and 211 are arranged in a predetermined area on the metal substrate 206 according to a predetermined rule. A light emitting element 210 that emits light of the first wavelength is provided in an area on the metal substrate 206 including the center of a predetermined area to be arranged, and an area outside the area where the light emitting element 210 is provided is provided with a light emitting element 210 that emits light of the first wavelength. , a light emitting element 211 that emits light of a second wavelength shorter than the first wavelength is provided.

Regarding the arrangement of the plurality of light emitting elements 210 and 211, the light emitting element 211 that emits light of the second wavelength is provided in an area on the metal substrate 206 including the center of the predetermined area, and the area in which the light emitting element 211 is provided is A light emitting element 210 that emits light of a first wavelength longer than the second wavelength may be provided in a region outside of the second wavelength.

With the above configuration including the light emitting element 210 using a COB LED, the metal substrate 206, and the heat sink 226, the same effect as the first embodiment can be obtained regarding heat radiation.
Furthermore, in this embodiment, the optical axis of the light emitted from the light emitting element 210 disposed at the center of the metal substrate 206 is substantially perpendicular to the first surface 110, but The optical axis of the light emitted from the light emitting element 211 arranged in the first surface 110 is arranged so as to be inclined inward by a predetermined angle with respect to the first surface 110. Therefore, according to this embodiment, light from the light emitting element 211 provided on the outer peripheral side of the metal substrate 206 can be emitted toward the center.

[Seventh embodiment]
Next, a beauty device according to a seventh embodiment will be explained. Although the appearance of the beauty device according to the seventh embodiment is similar to the beauty device 1 according to the first embodiment shown in FIG. 1, the beauty device according to the seventh embodiment will be hereinafter referred to as beauty device 1F.

FIG. 9 is a diagram showing an example of a cross section near the first surface 110 of the beauty device 1F. More specifically, FIG. 9(A) is a partial sectional view showing a part of the cross section of the beauty device 1F taken along the line AA in FIG. 1, similar to the beauty device 1 in FIG. Further, FIG. 9(B) is a perspective view of the metal substrate viewed from the first surface 110 side.

The light emitting section 20F includes two metal substrates 207 and 201. The metal substrate 207 is a substantially rectangular aluminum substrate, for example. The metal substrate 201 is similar to that in the second embodiment. When viewed from the first surface 110 side, the metal substrate 201 has a shape that surrounds the metal substrate 207, has a substantially rectangular outer periphery, and has a substantially rectangular opening formed inside. When viewed from the first surface 110 side, the arrangement is such that the metal substrate 207 is provided within the opening of the metal substrate 201. Like the metal substrate 200, the metal substrate 201 is, for example, an aluminum substrate.

One surface emitting laser 215 is provided as a light emitting element on the surface of the metal substrate 207 on the first surface 110 side. On the metal substrate 201, for example, 28 light emitting elements 211 are arranged in one column (or one row) along each side of the outer periphery of the metal substrate 201. Eight pieces are lined up along each side. The light emitting element 211 is similar to that in the second embodiment. In this embodiment, the light emitted from the surface emitting laser 215 and the light emitted from the light emitting element 211 are irradiated onto the skin surface through the window portion 111.

Similarly to the second embodiment, the back side of the metal substrate 207 on which the surface emitting laser 215 is disposed and the metal substrate 201 on which the light emitting element 211 is disposed (the direction of light irradiation from the surface emitting laser 215 and the light emitting element 211 is A heat sink 227, which is a heat dissipation member, is provided on the opposite side) and is in contact with the entire back surface of the metal substrates 207, 201.

With the above configuration including the surface emitting laser 215, the light emitting element 211 using a COB LED, the metal substrates 207, 201, and the heat sink 227, the same effect as the first embodiment can be obtained regarding heat radiation.

The plane on which the surface emitting laser 215 of the metal substrate 207 is arranged and the plane on which the light emitting element 211 of the metal substrate 201 is arranged are substantially parallel, and these planes are also approximately parallel to the first surface 110 of the housing 10. parallel.

The metal substrate 207 and the metal substrate 201 have different distances from the first surface 110 of the housing 10. In this embodiment, the distance from the metal substrate 201 to the first surface 110 is longer than the distance from the metal substrate 207 to the first surface 110. When viewed from the first surface 110 side, the metal substrate 201 is located outside the metal substrate 207. With this arrangement, the same effects as in the second embodiment can be obtained.

The eight light emitting elements 211 arranged on both sides of the metal substrate 201 in the X-axis direction are arranged at equal intervals on substantially a straight line along the X-axis. The eight light emitting elements 211 arranged on both sides of the metal substrate 201 in the Y-axis direction are arranged at equal intervals on a substantially straight line along the Y-axis.

In this embodiment, the distances from the first surface 110 of the metal substrate 207 and the metal substrate 201 are configured to be different from each other, but these distances may be substantially the same. That is, the surface of the metal substrate 207 and the surface of the metal substrate 201 may be substantially on the same plane. In this case, the surface emitting laser 215 and the light emitting element 211 may be arranged on one metal substrate.

Further, in this embodiment, the distance from the metal substrate 201 to the first surface 110 is made longer than the distance from the metal substrate 207 to the first surface 110; The distance may be longer than the distance from the metal substrate 201 to the first surface 110. In this case, the distance from the surface emitting laser 215 to the window 111 is longer than the distance from the light emitting element 211 to the window 111.

[Modified example]
The embodiments described above can be modified in various ways. Examples of those modifications are shown below. Note that the embodiments described above and the modifications shown below may be combined as appropriate.

(1) In each of the embodiments described above, a metal substrate is used as the substrate on which the light emitting element is mounted, but a resin substrate such as a flexible substrate may also be used.

(2) In each of the above embodiments, the beauty device is primarily a device for hair removal, but it may also be a device that primarily performs skin care other than hair removal. For example, it may be a device that uses wavelengths that act on melanin to care for dullness and age spots, as in the case of hair removal, or a device that cares for beautiful skin using a beauty serum. In either case, the light emitting elements may be appropriately selected and arranged so that the wavelength of light emitted from the light emitting elements is suitable for desired skin care.

(3) In the first embodiment, fourth embodiment, and fifth embodiment described above, only the plurality of light emitting elements 210 whose wavelength of light emitted from the metal substrate is the first wavelength are provided. However, light emitting elements that emit light of different wavelengths may be provided on the same metal substrate.

For example, as shown in the first embodiment, the fourth embodiment, and the fifth embodiment, a plurality of light emitting elements are arranged in a predetermined area on a metal substrate according to a predetermined rule, and the center of the arranged predetermined area is A light emitting element 210 that emits light of a first wavelength is provided in the area including the light emitting element 210, and a light emitting element 210 that emits light of a second wavelength shorter than the first wavelength is provided in the area outside the area where the light emitting element 210 is provided. The element 211 may also be provided.

(4) In the above embodiment, the light emitting elements are arranged on the metal substrate in a matrix, for example, 4 rows and 4 columns, but the arrangement is not limited to the matrix and can be arranged in other shapes. You may.

FIG. 10 is a diagram showing the arrangement (radial, cross-shaped, rectangular) of light-emitting elements according to a modified example. FIG. 10A shows an example in which a plurality of light emitting elements (here referred to as light emitting elements 210) are arranged radially on a metal substrate. FIG. 10B shows an example in which a plurality of light emitting elements 210 are arranged in a cross shape on a metal substrate. FIG. 10C shows an example in which a plurality of light emitting elements 210 are arranged in a rectangular shape on a metal substrate.

In addition, the light emitting elements 210 (which emit light of the first wavelength) are arranged in a radial, cross-shaped, or rectangular shape as described above, and a light emitting element having a wavelength shorter than the first wavelength is placed outside the area where the light emitting elements 210 are arranged. A light emitting element 211 that emits light of the second wavelength may be arranged.

FIG. 11 is a diagram showing another arrangement of light emitting elements according to a modified example (radial, crisscross, and rectangular arrangement of two types of light emitting elements).
In FIG. 11A, a plurality of light emitting elements 210 are arranged radially within a circular region indicated by a broken line on a metal substrate, similar to FIG. This shows an example in which they are arranged in a circular shape and arranged radially as a whole.
In FIG. 11(B), a plurality of light emitting elements 210 are arranged in a cross shape in a cross-shaped area indicated by a broken line on a metal substrate, similar to FIG. An example is shown in which the elements 211 are arranged in a cross shape as a whole.
In FIG. 11C, a plurality of light emitting elements 210 are arranged in a rectangular shape within a rectangular area indicated by a broken line on a metal substrate, similar to FIG. An example is shown in which the elements 211 are arranged in a rectangular shape as a whole. Note that in the example of FIG. 11C, the light emitting element 211 does not entirely surround the rectangular area in which the light emitting element 210 is arranged, but only the upper and lower sides of the rectangular area. It is arranged to surround the

In the arrangement in FIGS. 11(A), 11(B), and 11(C), the light emitting element 210 and the light emitting element 211 may be arranged on the same metal substrate, or may be arranged on different metal substrates. may be done. When disposed on different metal substrates, the distances from the first surface 110 of the housing 10 to each metal substrate may be different, as in the second embodiment. When arranged on the same metal substrate, the region where the light emitting elements 211 are arranged on the outer peripheral side of the metal substrate may be inclined toward the center of the metal substrate, as in the sixth embodiment.

In addition, in each example of FIG. 11, the light emitting element 210 is placed inside the area where the light emitting elements on the metal substrate are placed, and the light emitting element 211 is placed outside, but it is assumed that the light emitting element 211 is placed inside the area where the light emitting elements are placed on the metal substrate. However, the light emitting element 210 may be placed outside.

FIG. 12 is a diagram showing another example of the arrangement of light emitting elements (square and rectangular arrangement of two types of light emitting elements) according to a modified example.

FIG. 12(A) is an example in which a plurality of light emitting elements are arranged in a matrix like FIG. 2(B) within a square area on a metal substrate in which light emitting elements are arranged. In FIG. 12A, a plurality of light emitting elements 210 (four each) are arranged in the area indicated by the broken line (the first column and the third column from the left), and An example is shown in which a plurality of (four each) light emitting elements 211 are arranged in the fourth column. That is, light emitting elements 210 and 211 having different wavelengths are arranged alternately in the column direction.

In the example of FIG. 12A, the light emitting elements 210 and 211 having different wavelengths are arranged alternately in the column direction, but they may be arranged alternately in the row direction. That is, a plurality of light emitting elements 210 (four each) are arranged in the first row and third row from the top, and a plurality (four each) are arranged in the second and fourth rows from the top. The light emitting elements 211 may be arranged.
Further, in these arrangement examples, the arrangement positions of the light emitting element 210 and the light emitting element 211 may be interchanged.

FIG. 12(B) is an example in which a plurality of light emitting elements are arranged in a matrix like FIG. 11(C) within a rectangular area on a metal substrate in which light emitting elements are arranged. In FIG. 12B, a plurality of light emitting elements 210 (eight each) are arranged in the area indicated by the broken line (the first row from the top, the third row from the top), and the second row from the top, the third row from the top. An example is shown in which a plurality of (eight each) light emitting elements 211 are arranged in the fourth row. That is, light emitting elements 210 and 211 having different wavelengths are arranged alternately in the row direction.

FIG. 12(C) is an example in which a plurality of light emitting elements are arranged in a matrix like in FIGS. 11(C) and 12(B) within a rectangular area in which light emitting elements are arranged on a metal substrate. In FIG. 12C, a plurality of (four each) light emitting elements 210 are placed in the areas indicated by broken lines (first column, third column, fifth column, and seventh column from the left). An example is shown in which a plurality of light emitting elements 211 (four each) are arranged in the second column, fourth column, sixth column, and eighth column from the left. That is, light emitting elements 210 and 211 having different wavelengths are arranged alternately in the column direction.

In the examples shown in FIGS. 12(B) and 12(C), light emitting elements 210 and 211 having different wavelengths are arranged alternately in each row or column. The light emitting elements 210 and 211 having different wavelengths may be arranged alternately.

For example, in FIG. 12C, the light emitting elements 210 are arranged in the first column, second column, fifth column, and sixth column from the left, and the light emitting elements 210 are arranged in the third column from the left, The light emitting elements 211 may be arranged in the fourth column, the seventh column, and the eighth column.
Furthermore, in the arrangement examples shown in FIGS. 12(B) and 12(C), the arrangement positions of the light emitting element 210 and the light emitting element 211 may be interchanged.

(5) In the above-described embodiments and modifications, the second wavelength (for example, 500 nm to 800 nm) that is the wavelength of the light emitted by the light emitting element 211 is the first wavelength (for example, 500 nm to 800 nm) that is the wavelength of the light emitted by the light emitting element 210 ( For example, the second wavelength may be shorter than the first wavelength (for example, 800 nm to 950 nm, preferably 808 nm to 860 nm), but the second wavelength may be longer than the first wavelength.
That is, the first wavelength of the light emitted by the light emitting element 210 is, for example, 500 nm to 800 nm, and the second wavelength of the light emitted by the light emitting element 211 is, for example, 800 nm to 950 nm (preferably 808 nm to 860 nm). Good too.

1, 1A, 1B, 1C, 1D, 1F...Beauty equipment,
DESCRIPTION OF SYMBOLS 10... Housing, 110... First surface, 111... Window part, 120... Side wall,
20, 20A, 20B, 20C, 20D, 20F...light emitting part,
200, 201, 202a to 202d, 204, 206, 207...metal substrate,
210, 211...Light emitting element, 215...Surface emitting laser,
220, 221, 223, 224, 226, 227...heat sink,
310... Roller member, 410... Switch, 510... Ventilation hole, 601... Condensing lens.

Claims (10)

a casing having a contact surface that comes into contact with the skin;
a metal substrate on which a heat dissipation member is provided on the back side;
a plurality of light emitting elements provided on the surface of the metal substrate;
A beauty device comprising: a window provided on the contact surface through which light emitted from the plurality of light emitting elements is emitted. The metal substrate has a first metal substrate and a second metal substrate each provided with one or more light emitting elements,
The first metal substrate and the second metal substrate are arranged such that angles between the contact surface and the respective substrate surfaces of the first metal substrate and the second metal substrate are different from each other. beauty equipment. The metal substrate has a first metal substrate and a second metal substrate each provided with one or more light emitting elements,
The beauty device according to claim 1, wherein the first metal substrate and the second metal substrate are arranged at different distances from the contact surface. the first metal substrate and the second metal substrate are arranged substantially parallel to each other;
The distance from the first metal substrate to the contact surface is longer than the distance from the second metal substrate to the contact surface,
The beauty device according to claim 3, wherein the first metal substrate is located outside the second metal substrate when viewed from the contact surface. The beauty device according to claim 1, wherein the window portion is provided with one condensing lens. The beauty device according to claim 1, wherein some of the plurality of light emitting elements are arranged such that their optical axes are inclined inward by a predetermined angle with respect to the contact surface. The plurality of light emitting elements are arranged in a predetermined area according to a predetermined rule,
A first region including the center of the predetermined region is provided with a first light emitting element that emits light of a first wavelength,
The beauty treatment according to any one of claims 1 to 6, wherein a second region outside the first region is provided with a second light emitting element that emits light of a second wavelength shorter than the first wavelength. Device. The first wavelength is 800 to 950 nm,
The cosmetic device according to claim 7, wherein the second wavelength is 500 to 800 nm. The beauty device according to claim 7, wherein the plurality of light emitting elements are arranged in a matrix, radially, or crisscross pattern. The beauty device according to claim 1, wherein the light emitting element includes one surface emitting laser and a plurality of LEDs arranged around the one surface emitting laser.