Skin treatment device

Abstract

The utility model provides a skin treatment device which can effectively cool a light emitting surface. A hair removal device (1) as a skin treatment device is provided with: a xenon lamp tube (11) as a light source for generating light emitted from a light emission surface (15a); a Peltier element (21) for absorbing heat from the light emission surface (15a); a heat sink (22) thermally connected to the Peltier element (21); and a fan (26) as an air blowing device that forms an air flow passing through the heat sink (22).

Description

Technical Field

[0001] The present utility model relates to a skin treatment device for performing hair removal treatment and the like. Background Art

[0002] Conventionally, in order to make the user's body hair inconspicuous on the skin surface (hair removal device), there is known a skin treatment device that performs treatment by irradiating light on the skin (for example, refer to Patent Document 1).

[0003] This kind of skin treatment device can partially burn the body hair and damage the hair roots by using the light emitted by the xenon flash lamp. The burnt body hair becomes brittle and is easily shed from the skin surface. In addition, by damaging the hair roots, the growth rate of body hair can also be inhibited.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2012-239874

[0007] However, in order to improve the comfort of skin treatment for the subject (user), and for the purpose of reducing the pain caused by light irradiation and the like, it is preferable that the temperature of the light exit surface in contact with the subject's (user's) skin is lower than the air temperature. Summary of the Utility Model

[0008] Therefore, in one aspect, an object of the present utility model is to provide a skin treatment device that can effectively cool the light exit surface.

[0009] In one aspect, in order to achieve the above object, the present utility model provides the following solutions.

[0010] (1) The present utility model provides a skin treatment device, which includes: a light source for generating light emitted from a light exit surface; a Peltier element for absorbing the heat of the light exit surface; a radiator thermally connected to the Peltier element; and a blower device for forming an air flow through the radiator.

[0011] (2) In the configuration of the above (1), the radiator is directly or indirectly joined to the Peltier element through a heat conductive material.

[0012] (3) In the configuration of the above (1), the radiator has: a plate-like portion joined to the heat dissipation side of the Peltier element, and a wall portion extending from the plate-like portion, and the blower device generates an air flow that impinges on the wall portion.

[0013] (4) In the structure of (1) above, it further includes a crystal forming the light exit surface, and the wall portion is set at an angle less than 90 degrees with respect to the orthogonal direction of the light exit surface, preferably inclined at about 45 degrees.

[0014] (5) In the structure of (1) above, it has an air flow path which guides the air flow generated by the air supply device from the wall portion around the light source to the exhaust port.

[0015] (6) In the structure of (1) above, the exhaust port is provided on both sides in the short side direction of the light exit surface, on the side opposite to the side where the Peltier element is provided.

[0016] (7) In the structure of (1) above, it further includes a reflector for reflecting the light of the light source towards the light exit surface, and the reflector and the radiator are adjacent to each other through an air layer.

[0017] (8) In the structure of (1) above, it further includes: a crystal forming the light exit surface; a cut-off filter for irradiating the light of the light source onto the crystal, and a light-transmissive adhesive is filled or a light-transmissive sheet material is inserted between the crystal and the cut-off filter.

[0018] The effects of the present utility model are as follows.

[0019] According to the present utility model, since the Peltier element absorbs the heat of the light exit surface, and the heat absorbed by the Peltier element is dissipated to the radiator, and the radiator is cooled by the air supply device, the temperature of the light exit surface is lower than the ambient temperature. Therefore, the subject (user) receives light irradiation treatment in a state of feeling sufficient coldness, thereby improving the treatment comfort of skin treatment. Description of the Drawings

[0020] Figure 1 It is a perspective view of the appearance of the hair removal device of the present embodiment observed from obliquely above.

[0021] Figure 2 It is a perspective view of the appearance of the hair removal device of the present embodiment observed from obliquely below.

[0022] Figure 3 It is a plan view of the hair removal device of the present embodiment.

[0023] Figure 4 It is to remove Figure 3 The upper main body housing and then it is a plan view.

[0024] Figure 5 It is a perspective view of the main structure inside the hair removal device of the present embodiment.

[0025] Figure 6 It is a perspective view of the main structure inside the hair removal device of this embodiment.

[0026] Figure 7 It is a side view of the main structure inside the hair removal device of this embodiment.

[0027] Figure 8 It is a perspective view showing the main part of the air inlet.

[0028] Figure 9 It is a perspective view showing the main part of the air outlet.

[0029] Figure 10 For (a), it is a perspective view of the radiator with a 90-degree wall surface of the wall part. (b) shows the diagram when the air supply direction is horizontal with respect to the radiator in (a). (c) is a perspective view of the radiator with a 90-degree wall surface of the wall part. (d) shows the diagram when the air supply direction is vertical with respect to the radiator in (c). (e) shows the diagram of the radiator with a 45-degree wall surface of the wall part. (f) shows the diagram when the air supply direction is horizontal with respect to the radiator in (e).

[0030] Figure 11 Shows Figure 10 The actual measurement results of the sapphire glass surface temperature and the radiator temperature in the cases of (a) and (b), (c) and (d), and (e) and (f).

[0031] Figure 12 It is a perspective view of the appearance of a facial beauty device of another embodiment.

[0032] Figure 13 Shows another embodiment, where (a) is a perspective view of the main structure inside the facial beauty device. Figure 13 (b) is a side view of the main structure inside the facial beauty device.

[0033] Figure 14 It is a side view of the main structure inside the hair removal device of a modification of the embodiment.

[0034] In the figure: 1 - Hair removal device (skin treatment device), 9a - Air inlet, 9b - Air outlet, 10 - Light irradiation part, 11 - Xenon lamp tube (light source), 12 - Reflector, 13 - Cutoff filter, 15 - Sapphire glass (crystal), 15a - Light exit surface, 17 - Air flow path, 18 - Air layer, 20 - Cooling part, 21 - Peltier element, 22 - Radiator, 24 - Plate-like part, 25 - Wall part, 26 - Fan (air supply device), 40 - Beauty device (skin treatment device), 50 - Adhesive. Detailed implementation mode

[0035] Hereinafter, embodiments of the present utility model will be described in detail based on the accompanying drawings.

[0036] In the description of the present utility model, as Figure 1 shown in the figures such as

[0037] shown in Figures 1 to 5 the skin treatment device, i.e., the hair removal device 1 includes: an elongated cylindrical main body housing 2; a light irradiation unit 10 accommodated in the main body housing 2 and emitting light outward; and a cooling unit 20 accommodated in the main body housing 2 and cooling the light irradiation unit 10.

[0038] The main body housing 2 includes: a head 3 having a protrusion 3a with a substantially rectangular shape on one side (the length direction side); and a grip portion 4 located on the other side of the head 3 and having a circular shape. A rectangular head opening 3c is formed on the front end surface 3b of the head 3. Light is emitted to the outside from the head opening 3c.

[0039] The grip portion 4 is formed in a size that is easy for the user to hold. A display / operation unit 5 for controlling power on / off, adjusting light intensity, etc. is provided above the grip portion 4. A through hole 6 penetrating through the center in the width direction in the up-down direction (the short side direction) is formed in the grip portion 4.

[0040] The through hole 6 is elongated in the length direction and extends near the rear end of the grip portion 4.

[0041] Inside the grip portion 4 separated left and right by the through hole 6, electrolytic capacitors 7 (see Figure 4 ) are respectively accommodated. A terminal insertion hole 8 is provided at the rear end of the grip portion 4. All corners of the head 3 and the grip portion 4 are rounded.

[0042] As Figures 5 to 7 shown, the light irradiation unit 10 includes: two xenon lamps 11 as light sources; a reflector 12 arranged to cover the outside of the two xenon lamps 11; a cut-off filter 13; a gasket 14; and a crystal 15 (including sapphire glass, quartz glass, etc., in this embodiment, sapphire glass will be taken as an example hereinafter) forming a light exit surface 15a.

[0043] The xenon lamps 11 emit light having an intensity and wavelength effective for hair removal within a wide wavelength band from ultraviolet to infrared. The light intensity, etc. of the xenon lamps 11 can be adjusted by the display / operation unit 5. The reflector 12 reflects the light emitted by the xenon lamps 11 toward the light exit surface 15a. The reflector 12 has a cutout formed at an appropriate position for air passage. The cut-off filter 13 filters out the ultraviolet rays harmful to the human body in the light from the xenon lamps 11.

[0044] The light irradiation unit 10 is arranged such that air can flow through it from the lower side to the upper side. Specifically, it is arranged such that air can pass through the space between the cut-off filter 13, the xenon lamp tube 11, and the reflector 12, and also through the outer space outside the outer peripheral surface of the reflector 12. In addition, an air flow path 17 is formed that allows the air flow generated by the fan 26 to pass from the wall portion 25 of the radiator 22, around the xenon lamp tube 11, to the exhaust port 9b (see Figure 9 ), as indicated by the arrow in Figure 7 ).

[0045] The gasket 14 is located between the cut-off filter 13 and the sapphire glass 15. The gasket 14 is an elastic body in the shape of a frame and closely adheres to all the outer edges of the cut-off filter 13 and the sapphire glass 15. Thus, a sealed space 16 is formed between the cut-off filter 13 and the sapphire glass 15 through the gasket 14 (see Figure 7 ).

[0046] The sapphire glass 15 is a material with high thermal conductivity and good light transmittance. The sapphire glass 15 is in the shape of a flat cuboid. A light exit surface 15a is formed on the surface of the sapphire glass 15, and it is arranged at the head opening 3c of the main body housing 2 in a state where only the light exit surface 15a is exposed (see Figure 1 ). Since the light exit surface 15a of the sapphire glass 15 comes into contact with the skin of the subject (user), it is also the skin contact surface. Although the sapphire glass 15 may dew at normal temperature, since the above-mentioned sealed space 16 is formed on the back side of the sapphire glass 15 (see Figure 7 ), dew does not form on the back side of the sapphire glass 15. Accordingly, problems such as moisture infiltration into the interior of the main body housing 2 due to dew formation on the sapphire glass 15 can be prevented.

[0047] The cooling unit 20 includes: a Peltier element 21 (Peltier device) provided on the lower surface of the sapphire glass 15; a radiator 22 thermally connected to the Peltier element 21; and a fan 26, which is a blowing device for forming an air flow through the radiator 22.

[0048] The heat absorption surface of the Peltier element 21 is directly in surface contact connection with the sapphire glass 15. The heat dissipation surface of the Peltier element 21 is directly in surface contact connection with the plate-like portion 24 (described later) of the radiator 22. That is, the Peltier element 21 and the radiator 22 are thermally connected by direct bonding.

[0049] The radiator 22 is made of sheet metal copper material. The thermal conductivity of the sheet metal copper material is 398 (W / m·K), which has better thermal conductivity than aluminum. The radiator 22 includes: a radiator body 23 composed of a plurality of fins arranged in parallel (not marked); a plate-like portion 24 joined to the heat-releasing surface of the Peltier element 21; and a wall portion 25 continuous with the plate-like portion 24 (see Figure 10 ).

[0050] The side view of the radiator body 23 shows that an arc-shaped cutting surface 23a is formed at the upper position of the front end surface, and an inclined straight surface 23b is formed at the lower position of the front. By allowing a part of the light irradiation unit 10 to enter and be arranged in the space formed by the arc-shaped cutting surface 23a. In this way, the radiator 22 and the reflector 12 are arranged adjacent to each other through the air layer 18 (see Figure 7 ). The size of the air layer 18 is set to ensure the insulation distance between the radiator 22 and the reflector 12.

[0051] That is to say, the radiator 22 and the light irradiation unit 10 are arranged to partially overlap in the length direction and the short side direction (see Figures 5 to 7 ). Accordingly, compared with the case where the radiator 22 and the light irradiation unit 10 are arranged in the main body housing 2 without overlapping, the accommodation space for the cooling unit 20 and the light irradiation unit 10 in the main body housing 2 can be made more compact in the length direction and the short side direction.

[0052] The angle of the inclined straight surface 23b is set to be less than 90 degrees with respect to the orthogonal direction of the light-emitting surface 15a (i.e., the air flow direction in the radiator body 23), and is approximately 45 degrees in this embodiment. The wall portion 25 is arranged along this inclined surface 23b of about 45 degrees. That is to say, the wall portion 25 is joined to the front end surfaces of the plurality of fins of the radiator body 23 and closes the front gap between the fins. Therefore, the air in the radiator body 23 is forced to change direction and face the light irradiation unit 10 arranged above the radiator body 23 after hitting the wall portion 25.

[0053] The fan 26 is of the impeller type and is continuously arranged at the rear end of the radiator body 23. The fan 26 sucks external air from the air inlet 9a of the main body housing 2 (see Figure 8 ) into the interior of the main body housing 2, and discharges the sucked air from the rear end of the radiator body 23 to the interior. The discharged air passes through the radiator 22 and the light irradiation unit 10 in sequence, and is then discharged to the outside through the air outlet 9b of the main body housing 2 (see Figure 9 ).

[0054] As Figure 8As shown in detail in [reference], the suction port 9a is provided on the circumferential surface of the through-hole 6 of the main body housing 2. The suction port 9a is formed by a slit-shaped hole that extends around the entire circumference of the circumferential surface of the through-hole 6.

[0055] As Figure 9 shown in detail in [reference], the exhaust port 9b is provided at the position of the head 3 of the main body housing 2. The exhaust port 9b is formed by a slit-shaped hole that extends along the periphery (circumference) of the convex portion 3a of the head 3. That is, the exhaust port 9b is provided on the opposite side of the side where the Peltier element 21 is located, out of the two sides in the short side direction of the light exit surface 15a.

[0056] The main body housing 2 is equipped with a pair of main rollers 30 and a sub-roller 31. The pair of main rollers 30 are rotatably provided in a state where a part thereof protrudes, on the upper surface connected to the front end surface 3b at the outer position of the sapphire glass 15. The pair of main rollers 30 are spaced apart at symmetric positions on the left and right in the width direction. The sub-roller 31 is rotatably provided in a state where a part thereof protrudes, at a position opposite to the pair of main rollers 30 on the front end surface 3b at the outer position of the sapphire glass 15. And the sub-roller 31 is provided at the center position in the width direction.

[0057] When the subject (user) presses the front end surface 3b of the main body housing 2 against the facial skin, the pair of main rollers 30 and the sub-roller 31 come into contact with the skin. In this state, if a force is applied to move the front end surface 3b of the main body housing 2 in the short side direction, the front end surface 3b of the main body housing 2, that is, the light exit surface 15a, can be smoothly moved along the facial skin by the rotation of the pair of main rollers 30 and the sub-roller 31.

[0058] Next, the operation process of the hair removal device 1 will be described. When the subject (user) instructs to turn on the power through the display / operation unit 5, a voltage is applied to the Peltier element 21. At this time, the Peltier element 21 absorbs the heat of the sapphire glass 15, causing the sapphire glass 15 to be cooled. The heat absorption of the Peltier element 21 causes heat to be transferred to its heat dissipation side. Furthermore, this heat is conducted sequentially through the plate-like portion 24, the wall portion 25, and the radiator main body 23 of the radiator 22, and is dissipated by the radiator 22.

[0059] On the other hand, when the subject (user) instructs to turn on the power through the display / operation unit 5, the fan 26 starts. At this time, due to the suction of the fan 26, outside air is sucked into the main body housing 2 from the air inlet 9a. The air sucked into the main body housing 2 first bypasses the periphery of the electrolytic capacitor 7, and then is sucked into the interior of the fan 26 from above the fan 26. The air sucked into the fan 26 is discharged from the side of the fan 26 toward a direction in front of the rear end of the radiator main body 23. The air flow discharged by the fan 26 passes through the fin gaps of the radiator main body 23, cooling the radiator 22. Thus, by cooling the radiator 22, the heating side of the Peltier element 21 is also indirectly cooled, thereby maintaining the cooling state of the sapphire glass 15.

[0060] In addition, the air flow passing through the fin gaps of the radiator main body 23 impacts the wall portion 25 at the front end of the radiator main body 23, and the air flow is forced to change direction upward. The air flow after changing direction passes through the air layer 18 (see Figure 7 ), and flows into the light irradiation unit 10.

[0061] The air flowing into the light irradiation unit 10 bypasses the periphery of the xenon lamp tube 11. Specifically, it passes through the periphery of the xenon lamp tube 11, near the outer peripheral side of the reflector 12, and near the back surface of the cut-off filter 13, cooling these components.

[0062] The air flowing upward from below through the light irradiation unit 10 is discharged to the outside of the main body housing 2 through the exhaust port 9b located above the light irradiation unit 10.

[0063] The subject (user) holds the holding portion 4 of the hair removal device 1, presses the sapphire glass 15 against the skin, and while pressing and moving the position, performs an instruction operation for light irradiation at a predetermined position. At this time, light is emitted from the sapphire glass 15 to the skin. In this way, the subject (user) can perform hair removal while feeling the cold sensation on the skin.

[0064] Next, as Figure 10 shown, the angle of the wall surface of the wall portion 25 of the radiator 22 and the air supply direction (air flow direction) will be described. In the cases of (a) and (b), the radiator 22 with the wall surface of the wall portion 25 being 90 degrees is shown, and the air supply direction is horizontal with respect to the radiator 22. In the cases of (c) and (d), the radiator 22 with the wall surface of the wall portion 25 also being 90 degrees is shown, but the air supply direction is vertical with respect to the radiator 22. In the cases of (e) and (f), the radiator 22 with the wall surface of the wall portion 25 being 45 degrees is shown, and the air supply direction is horizontal with respect to the radiator 22. When the wall surface of the wall portion 25 is 45 degrees, the area of the wall surface of the wall portion 25 is about 1.4 times that in the 90-degree case.

[0065] When measuring these situations, the surface temperature of the sapphire glass 15 and the temperature of the radiator 22 were found as Figure 11 shown. Accordingly, when the wall surface of the wall portion 25 is the radiator 22 at 45 degrees and the air supply direction is horizontal with respect to the radiator 22 (cases (e) and (f)), the surface temperature of the sapphire glass 15 decreases the most. This indicates that there is a correlation between the surface area of the wall surface of the wall portion 25 and the cooling of the sapphire glass 15.

[0066] As described above, the hair removal device 1 includes: a xenon lamp tube 11 as a light source for generating light emitted from the light emitting surface 15a; a Peltier element 21 that absorbs the heat of the light emitting surface 15a; a radiator 22 thermally connected to the Peltier element 21; and a blower device, i.e., a fan 26, that forms an air flow passing through the radiator 22. Therefore, the heat of the light emitting surface 15a is absorbed by the Peltier element 21, the heat absorbed by the Peltier element 21 is dissipated to the radiator 22, and the radiator 22 is air-cooled by the fan 26 as the blower device, so that the temperature of the light emitting surface 15a is lower than the ambient temperature. Accordingly, the subject (user) receives light irradiation treatment when feeling sufficient coldness, thereby improving the comfort of skin treatment.

[0067] The radiator 22 is directly joined to the Peltier element 21. Therefore, the heat of the Peltier element 21 is reliably and effectively dissipated by the radiator 22. However, in some modified examples, the radiator 22 may be joined to the Peltier element 21 through a medium material, and the medium material may be a thermal grease (such as thermal grease or heat sink silicone grease, etc.) or a heat conducting sheet (such as a heat conducting pad or a phase change sheet, etc.) or a similar material. In this case, the heat conductivity from the Peltier element 21 to the radiator 22 can be improved.

[0068] The radiator 22 includes a plate-like portion 24 joined to the heat dissipation side of the Peltier element 21 and a wall portion 25 continuous from the plate-like portion 24, and an air flow generated by the fan 26 as a blower device that impinges on the wall portion 25 is formed. Therefore, since the radiator 22 is directly connected to the Peltier element 21, its cooling performance is improved. The wall portion 25 is air-cooled, thereby enhancing the cooling effect. At the same time, the wall portion 25 can forcibly change the direction of the air flow.

[0069] The sapphire glass 15 constituting the light emitting surface 15a is further included, and the wall portion 25 is provided at an angle less than 90 degrees with respect to the orthogonal direction of the light emitting surface 15a, preferably provided at an inclination of about 45 degrees. Therefore, when the wall portion 25 is provided at an angle less than 90 degrees, compared with the case where it is provided at 90 degrees, the area of the wall portion 25, that is, the area receiving air, becomes larger, thereby improving the cooling performance. If the wall portion 25 is provided at about 45 degrees, the surface area of the wall surface of the wall portion 25, that is, the area receiving air, increases, thereby further improving the cooling performance.

[0070] There is an air flow path 17 through which the air flow generated by the fan 26 as a blower device flows from the wall portion 25 around the xenon lamp tube 11 as a light source toward the exhaust port 9b. Therefore, the air flow reliably passes around the xenon lamp tube 11, enabling the cooling of the xenon lamp tube 11 and the like.

[0071] The exhaust port 9b is provided on the opposite side of the side where the Peltier element 21 is provided, on both sides in the short side direction of the light emitting surface 15a. Therefore, the hot air before entering the exhaust port 9b does not interfere with the heat absorption effect of the Peltier element 21.

[0072] It further includes a reflector 12 for reflecting the light from the xenon lamp tube 11 as a light source toward the light emitting surface 15a, and the reflector 12 and the radiator 22 are isolated and arranged through an air layer 18 (see Figure 7 ). The reflector 12 is usually in contact with the trigger and at the same potential when the xenon lamp tube 11 emits light. Because a voltage of several thousand volts needs to be applied instantaneously, it has the characteristic of potentially leaking electricity to surrounding conductive components. Therefore, although the metal radiator 22 also has a risk of electric leakage, when there is no partition provided between the reflector 12 and the radiator 22, the air layer 18 can prevent electric leakage (see Figure 7 ). In addition, due to the simple structure, the reflector 12 can be easily cooled by the air used to cool the radiator 22 without reducing the wind speed. That is, since there is no obstacle (partition) blocking the heat source, the wind speed of the fan 26 is not reduced.

[0073] Next, other embodiments will be described. As shown in Figure 12 and Figure 13 , the beauty instrument 40 as a skin treatment device has: an elongated cylindrical main body grip 41; a head 42 protruding obliquely forward from the front end of the main body grip 41. The light irradiation unit 10 and the cooling unit 20 are accommodated inside the main body grip 41 and the head 42. In the above embodiment, the light irradiation unit 10 is arranged at a position overlapping with the radiator 22 of the cooling unit 20, but in this other embodiment, the light irradiation unit 10 and the radiator 22 are arranged in a straight line connection position without overlap.

[0074] The front end surface of the radiator main body 23 of the radiator 22 does not form an arc-shaped cut surface 23a, but only forms an inclined straight surface 23b. The wall portion 25 having a wall surface inclined at 45 degrees is arranged to block the inclined straight surface 23b. The air flow passing through the radiator main body 23 flows into the light irradiation unit 10 through the front end surface of the radiator main body 23 (the part where the arc-shaped cut surface 23a is not formed) not blocked by the wall portion 25.

[0075] Other configurations are basically the same as those in the foregoing embodiments. To avoid redundant description, the same components in the figures are labeled with the same reference signs, and the description thereof is omitted.

[0076] In this other embodiment, similar to the foregoing embodiment, the Peltier element 21 absorbs the heat from the light exit surface 15a, then transfers the absorbed heat to the radiator 22 for heat dissipation, and the radiator 22 is air-cooled by the fan 26 serving as a blowing device, so that the temperature of the light exit surface 15a is lower than the surrounding environment. Therefore, the subject (user) can receive light irradiation treatment while feeling sufficient coldness, thereby improving the comfort of skin treatment.

[0077] Next, a modified example of the embodiment will be described. In the foregoing embodiment, a sealed space 16 is formed between the sapphire glass 15 and the cut-off filter 13 by using the gasket 14 (see Figure 7 ). In contrast, in this modified example, as Figure 14 shown, a highly light-transmissive adhesive 50 is filled between the sapphire glass 15 and the cut-off filter 13. The adhesive 50 is formed to have a substantially uniform thickness over the entire area of the opposing surfaces of the sapphire glass 15 and the cut-off filter 13. The Peltier element 21 is disposed on the lower surface of the sapphire glass 15 with a heat conductive sheet 51 interposed therebetween.

[0078] Other configurations are the same as those in the foregoing embodiment, so the same components in the figures are labeled with the same reference signs, and redundant description will be omitted.

[0079] In this modified example, due to the same effect as that in the foregoing embodiment, the subject (user) can perform hair removal while feeling coldness (coolness) on the skin.

[0080] This modified example has the following effects. Since the back surface of the sapphire glass 15 is filled with the adhesive 50, the low thermal conductivity of the adhesive 50 forms a heat insulation layer, so condensation does not occur on the back surface of the sapphire glass 15.

[0081] Since the adhesive 50 integrates the sapphire glass 15 and the cut-off filter 13, the sapphire glass 15 and the cut-off filter 13 can be treated as a single integral component, thereby improving the assembly efficiency.

[0082] Since the adhesive 50 can act as a buffer material for the sapphire glass 15 and the like, the risk of interference between the glasses due to dropping impact or the like can be reduced.

[0083] Since the light emitted by the xenon lamp tube 11 enters the adhesive 50 after the ultraviolet rays are cut by the cut-off filter 13, the adhesive 50 is not damaged by the ultraviolet rays, which helps to improve the durability of the adhesive 50.

[0084] Although the temperature of the cut-off filter 13 rises due to the light emitted by the xenon lamp tube 11, the adhesive 50 with low thermal conductivity acts as a heat insulation layer, thereby suppressing the temperature rise of the sapphire glass 15, and thus improving the efficiency of the sapphire glass 15 in maintaining a cold feeling.

[0085] Since the gap between the sapphire glass 15 and the cut-off filter 13 is filled with the adhesive 50, dust will not be mixed into the light path, and the occurrence of local blackening after long-term use can be prevented.

[0086] Here, in the above embodiment, although the gap between the sapphire glass 15 and the cut-off filter 13 is filled with the adhesive 50, a thin sheet of a transparent light-transmitting material can be selectively inserted between the sapphire glass 15 and the cut-off filter 13. For example, such a thin sheet material can be a transparent silicone material with heat insulation properties. Or, the gap between the sapphire glass 15 and the cut-off filter 13 can be filled with both a light-transmitting thin sheet material and the adhesive 50 at the same time. In addition, when directly pasting a silicone thin sheet onto the sapphire glass 15 or the cut-off filter 13 and then pasting another component onto the silicone thin sheet, air bubbles may be generated. In this regard, by applying an adhesive with a higher viscosity to the silicone thin sheet and then pasting another component, the generation of air bubbles can be reduced.

[0087] Even in the case of such a modification, substantially similar effects can be obtained compared to the case where the adhesive 50 is filled. That is, since the thin sheet material is in close contact with the sapphire glass 15 and the cut-off filter 13, dust can be prevented from being mixed into the light path, and local blackening during long-term use can be prevented.

[0088] Various embodiments have been described in detail above, but the present utility model is not limited to specific embodiments, and various modifications and changes can be made within the scope of the claims. All or multiple components of the above embodiments can also be combined.

[0089] In the embodiment, a xenon lamp tube 11 such as a flash lamp is used as the light source, but other types of light sources (such as a laser source, an LED light source, an IPL, a halogen lamp) other than the xenon lamp tube 11 can also be used. Since the xenon lamp tube 11 can emit stronger light than other light sources, it is very effective for hair removal treatment, but generates more heat, and effective heat dissipation, heat removal, and cooling are required. As described above, since the hair removal device 1 in the embodiment has good cooling performance of the radiator 22, effective heat dissipation, heat removal, and cooling can be performed.

[0090] In the present embodiment, the fan 26 used is a centrifugal type, but other types of fans (such as a propeller type) can also be used.

[0091] In this embodiment, the skin treatment device is a hair removal device 1 and a beauty device 40. However, the present utility model is not limited thereto, and it is also applicable to devices that come into contact with the skin for skin treatment (such as wrinkles, skin laxity, age spots, freckles, acne, skin diseases, etc.).

[0092] In addition, regarding the above embodiments, the following additional information is further disclosed.

[0093] (Supplementary Note 1)

[0094] (1) A skin treatment device is disclosed, including: a light source for generating light emitted from a light exit surface; a Peltier element for absorbing the heat of the light exit surface; a radiator thermally connected to the Peltier element; and a blower device for forming an air flow through the radiator.

[0095] (2) In the configuration of the above (1), it is characterized in that the radiator is directly or indirectly joined to the Peltier element through a heat conductive material.

[0096] (3) In the configuration of the above (1), it is characterized in that the radiator has: a plate-like portion joined to the heat dissipation side of the Peltier element, and a wall portion extending from the plate-like portion, and the blower device generates an air flow that impacts the wall portion.

[0097] (4) In the configuration of the above (1), it is characterized in that it further includes a crystal forming the light exit surface, and the wall portion is set at an angle less than 90 degrees with respect to the orthogonal direction of the light exit surface, preferably inclined at about 45 degrees.

[0098] (5) In the configuration of the above (1), it is characterized in that it has an air flow path, and the air flow path guides the air flow generated by the blower device from the wall portion through the periphery of the light source to an exhaust port.

[0099] (6) In the configuration of the above (1), it is characterized in that the exhaust port is provided on both sides in the short side direction of the light exit surface, on the opposite side of the side where the Peltier element is provided.

[0100] (7) In the configuration of the above (1), it is characterized in that it further includes a reflector for reflecting the light of the light source towards the light exit surface, and the reflector and the radiator are adjacent to each other through an air layer.

[0101] (8) In the configuration of the above (1), it is characterized in that it further includes: a crystal forming the light exit surface; a cut-off filter for irradiating the light of the light source onto the crystal, and a light-transmissive adhesive is filled or a light-transmissive sheet material is inserted between the crystal and the cut-off filter.

Claims

1. A skin treatment device, characterized in that, Comprising: A light source for generating light emitted from a light emitting surface; A Peltier element for absorbing heat from the light emitting surface; A heat sink thermally connected to the Peltier element; and A blower device for forming an air flow through the heat sink.

2. The skin treatment device according to claim 1, wherein The heat sink is directly or indirectly joined to the Peltier element through a heat conductive material.

3. The skin treatment device according to claim 1, wherein The heat sink has: a plate-like portion joined to the heat-releasing side of the Peltier element; and a wall portion extending from the plate-like portion, The blower device generates an air flow that impinges on the wall portion.

4. The skin treatment device according to claim 3, wherein Further comprising a crystal forming the light emitting surface, The wall portion is set to be inclined at an angle less than 90 degrees with respect to the orthogonal direction of the light emitting surface.

5. The skin treatment device according to claim 4, wherein The wall portion is set to be inclined at an angle of about 45 degrees with respect to the orthogonal direction of the light emitting surface.

6. The skin treatment device according to claim 3, wherein There is an air flow path that guides the air flow generated by the blower device from the wall portion around the light source to an exhaust port.

7. The skin treatment device according to claim 6, wherein The exhaust port is provided on both sides in the short side direction of the light emitting surface, on the side opposite to the side where the Peltier element is provided.

8. The skin treatment device according to claim 1, wherein Further comprising a reflector for reflecting the light of the light source towards the light emitting surface, the reflector and the heat sink being adjacent to each other through an air layer.

9. The skin treatment device according to claim 1, wherein Further comprising: a crystal forming the light emitting surface; a cut-off filter for directing the light of the light source towards the crystal, A light-transmissive adhesive is filled or a light-transmissive sheet material is inserted between the crystal and the cut-off filter.

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