Abstract:
A cosmetic device for improving skin conditions comprises: (i) a fluid-storing portion fluid-tightly storing a fluid therein comprised of a thin material, on a surface of which portion a planar contact surface adapted to contact a skin is formed; and (ii) at least one ultrasonic transducer disposed near or at the fluid-storing portion to propagate ultrasonic waves through the fluid to the skin. The fluid is fluid-tightly stored in the fluid-storing portion and is not in contact with the body. Ultrasonic waves are propagated through the fluid to a skin.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to a cosmetic device for achieving cosmetic effect by giving ultrasonic vibration to the skin. In particular, the present invention relates to a skin care pad provided with a ultrasonic transducer.  
         [0003]     2. Description of the Related Art  
         [0004]     As described in Japanese Patent Laid-open No. 2000-233009, a cosmetic device comprising a pad and an ultrasonic transducer which gives ultrasonic vibration to the pad is known. This cosmetic device is constructed so that ultrasonic waves oscillated from the ultrasonic transducer are propagated to the skin via the pad while sliding the pad on a skin surface. By using the cosmetic device in this manner, cosmetic effects including body metabolism stimulatory effect can be achieved through massaging action and deep thermal action by thermal energy effects, etc.  
         [0005]     Additionally, as described in Japanese Patent Laid-open No. 2002-000684, a cosmetic device having a belt in which multiple probes having ultrasonic transducers built-in are disposed is also known. Because this cosmetic device can be wrapped around the body, ultrasonic waves oscillated from the ultrasonic transducer are propagated to the skin via a pad without sliding the cosmetic device on the skin surface, and the same effects as achieved by the cosmetic device described in Japanese Patent Laid-open No. 2000-233009 can be achieved.  
         [0006]     When the above-mentioned cosmetic devices are used, a gel or a cream is applied to the skin surface or the skin-surface-contact portion of the cosmetic device to improve ultrasonic wave propagation efficiency by contacting the skin-surface-contact portion of the cosmetic device with a skin surface. Subsequently, the skin-surface-contact portion of the cosmetic device is placed onto the skin surface using light pressure and is moved along the skin surface if needed.  
         [0007]     However, when the above-mentioned cosmetic devices are used, it is required not only to apply a gel or a cream on the skin surface or the skin-surface-contact portion of the cosmetic device, but also to wipe out the gel or the cream applied to the skin surface or the skin-surface-contact portion of the cosmetic device. Additionally, the gel or the cream applied to the skin surface or the skin-surface-contact portion of the cosmetic device may get through inside the cosmetic device and shorten the life of the cosmetic device.  
         [0008]     The cosmetic device described in Japanese Patent Laid-open No. 2002-000684 is able to give vibration by ultrasonic waves to a broad surface of skin surface without sliding it on the skin surface. However, the cosmetic device needs to comprise many ultrasonic transducers; hence, it is difficult to reduce manufacturing costs.  
         [0009]     The present invention has been achieved to solve the above-mentioned problems. An object of the present invention is to provide a cosmetic device which is capable of contacting a skin-surface-contact portion of the cosmetic device with a skin surface without applying a gel or a cream and which is capable of improving propagation efficiency of ultrasonic vibration onto a broad surface or a localized surface of skin surface without increasing manufacturing costs.  
       SUMMARY OF THE INVENTION  
       [0010]     In an embodiment, the present invention provides a cosmetic device for improving skin conditions comprising: (i) a fluid-storing portion fluid-tightly storing a fluid therein comprised of a thin material, on a surface of which portion a planar contact surface adapted to contact a skin of the body is formed; and (ii) at least one ultrasonic transducer disposed near or at the fluid-storing portion to propagate ultrasonic waves through the fluid to the skin. According to the above embodiment, the fluid is fluid-tightly stored in the fluid-storing portion, and is not in contact with the body. The outer surface of the planar contact surface is also not in contact with the fluid. Ultrasonic waves are propagated through the fluid to a skin. Thus, a fluid need not be applied on the skin to enhance ultrasonic wave energy, and the skin and the outer surface of the planar contact surface are in dry contact with each other, thereby increasing operability and sanitary conditions.  
         [0011]     The present invention further includes, but is not limited to, the following embodiments:  
         [0012]     The fluid-storing portion may be configured to form a fluid layer therein having a thickness of about 1 mm to about 10 mm, preferably in the range of about 5 mm to about 10 mm, in view of propagation efficiency (in an embodiment, about 6 mm to about 8 mm). The thin material constituting the fluid-storing portion may be made of any soft resin which preferably has affinity with the skin, does not interfere with ultrasonic wave propagation, exhibits elasticity in wide temperature ranges, and has resistance to weather, heat, and chemicals such as acids, alkaline, and alcohol. Such a material includes, but is not limited to, vinyl chloride resin, styrene base thermoplastic elastomer, and a mixture of such an elastomer and an olefin resin (e.g., PP and PE).  
         [0013]     In the above, the fluid-storing portion may be configured to give the planar contact surface in an area of about 1 cm 2  to about 2,000 cm 2 , preferably in the range of about 5 cm 2  to about 500 cm 2 , depending on the target area of the body. The target area includes, but is not limited to, the face, the neck, the back, the shoulders, the arms, the thighs, the calves, the abdomen, the chest, the feet, the knees, the elbows, etc. The skin can be improved by massaging effect and thermal action effect.  
         [0014]     The fluid may be any suitable fluid which propagates ultrasonic waves such as a gel or cream. In an embodiment, the gel or cream designed for direct application to the skin can be used. In an embodiment, the gel or cream may have a viscosity of 1,000-25,000 cP at room temperature (if it is liquid) or have a gel strength of 10-100 g/cm 2  at room temperature (if it is gelatinous). The gel or cream may contain water, glycerin, amino acid salts, etc.  
         [0015]     In an embodiment, each transducer may be disposed on a surface of the fluid-storing portion opposite to the planar contact surface. In this case, ultrasonic waves are propagated through the fluid in a vertical direction. The at least one transducer may be multiple transducers, and the fluid-storing portion may be divided into multiple compartments by isolation walls, wherein each compartment corresponds to each transducer. This depends on the size of the fluid-storing portion and the size of the transducer. The isolation walls may have through holes through which the fluid passes. Additionally, in the above, the device may further comprise a controller which transmits ultrasonic wave signals to each transducer in sequence so as to prevent isolating ultrasonic energy in one spot and to cover a wide area, thereby increasing massaging and thermal effect.  
         [0016]     In the above, when propagation of ultrasonic waves is accomplished in a vertical direction, preferably, the transducer is capable of emitting ultrasonic waves at a frequency of about 500 kHz to about 10 MHz, preferably in the range of about 1 MHz to about 5 MHz. In an embodiment, the transducer is capable of transmitting ultrasonic waves having multiple frequencies, and a frequency can be selected by a switch (e.g., 1 MHz, 1.5 MHz, 2 MHz, 3 MHz). The frequency may be selected depending on the target location and the skin conditions.  
         [0017]     In another embodiment, each transducer may be disposed at one longitudinal end of the fluid-storing portion at an acute angle with respect to an exposed surface of the fluid stored in the fluid-storing portion to generate surface waves in the fluid. In this embodiment, ultrasonic waves are propagated in a horizontal direction, i.e., a longitudinal direction of the fluid-storing portion. The transducer and the fluid-storing portion may be configured to provide a propagation depth of about 35 mm in the fluid, so that ultrasonic waves can be propagated as surface waves through the fluid. Such surface waves are effective in treating the skin. Additionally, in this embodiment, the transducer is preferably capable of emitting ultrasonic waves at a frequency of about 40 kHz to about 1 MHz, more preferably in the range of about 60 kHz to about 200 kHz. In order to provide a propagation depth of about 35 mm, a frequency of about 80 kHz may be effective.  
         [0018]     In the above, the device may further comprise a vibration stop layer disposed on a side opposite to the planar contact surface of the fluid-storing portion.  
         [0019]     In still another embodiment, the present invention provides a cosmetic device for a skin comprising: (a) a fluid-storing portion storing a fluid therein and constituted by a soft pouched material, on a surface of which portion a body-contacting planar surface which can contact the body is formed; (b) at least one ultrasonic transducer having a given angle of gradient with the body-contacting surface of said fluid-storing portion, wherein an oscillating surface of said transducer is disposed facing said fluid-storing portion; and (c) a surface-wave-generating material supporting said ultrasonic transducer and having a contacting surface which contacts the edge of said fluid-storing portion, wherein said contacting surface is disposed to cross the normal line from nearly the center of said ultrasonic transducer. According to the embodiment, it becomes possible to propagate surface waves to the fluid-storing portion by vibration of the ultrasonic transducers via the surface-wave-generating material.  
         [0020]     In the above, the center portion of the contacting surface of said surface-wave-generating material and the normal line from nearly the center of said ultrasonic transducers may be crossed. According to the embodiment, it becomes possible to propagate the surface waves to the fluid-storing portion efficiently.  
         [0021]     Further, the contacting surface of said surface-wave-generating material may be a convex planar surface. According to the embodiment, it becomes possible to propagate the surface waves to the fluid-storing portion further efficiently.  
         [0022]     In an embodiment, the device may further comprise a supporting material which supports said fluid-storing portion and said ultrasonic transducer from the reverse side of said body-contacting surface in said fluid-storing portion, wherein said supporting material comprises a fastening material to be used to attach said supporting material to a part of the body along with said fluid-storing portion and said ultrasonic transducer. According to the embodiment, it becomes possible to attach the cosmetic device around the body.  
         [0023]     In yet another embodiment, the present invention provides a cosmetic device for a skin comprising: (I) a fluid-storing portion storing a fluid therein and comprising a soft pouched material, on a surface of which portion a planar contact surface which can contact the body is formed; and (II) at least one ultrasonic transducer, which are disposed on a surface on the reverse side of said contact surface. According to the embodiment, the cosmetic device is capable of contacting the skin-surface-contact portion of the cosmetic device with the skin surface without applying a gel or a cream to the skin surface or the skin-surface-contact portion of the cosmetic device, and of improving ultrasonic vibration propagation efficiency.  
         [0024]     In an embodiment, on a surface of said fluid-storing portion, multiple ultrasonic transducers may be disposed. According to the embodiment, ultrasonic vibration can be propagated to a local surface of the body.  
         [0025]     The device may further comprise an ultrasonic-transducer drive mechanism which vibrates said multiple ultrasonic transducers sequentially. According to the embodiment, it becomes possible to obtain cosmetic effects efficiently without giving excessive stimulation to the skin.  
         [0026]     In another embodiment, the device may further comprise partition-walls dividing a fluid stored inside said fluid-storing portion into multiple compartments. According to the embodiment, it becomes possible to stabilize a fluid inside divided surfaces by the partition-walls  14 .  
         [0027]     Multiple pores through which said fluid can pass may be formed in said partition-walls. According to the embodiment, it becomes possible to stabilize the fluid inside the surfaces divided by the partition-walls  14 .  
         [0028]     In the aforesaid devices, they may further comprise a supporting material which supports said fluid-storing portion and said ultrasonic transducer from the reverse side of said contact surface in said fluid-storing portion and wherein said supporting material comprises a fastening material which is used for attaching the supporting material to a part of the body along with said fluid-storing portion and said ultrasonic transducer. According to the embodiment, it becomes possible to wrap the cosmetic device around the body.  
         [0029]     For purposes of summarizing the invention and the advantages achieved over the prior art, certain objects and advantages of the invention have been described above. Of course, it is to be understood that not necessarily all such objects or advantages may be achieved in accordance with any particular embodiment of the invention. Thus, for example, those skilled in the art will recognize that the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other objects or advantages as may be taught or suggested herein.  
         [0030]     Further aspects, features and advantages of this invention will become apparent from the detailed description of the preferred embodiments which follow. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0031]     These and other features of this invention will now be described with reference to the drawings of preferred embodiments which are intended to illustrate and not to limit the invention.  
         [0032]      FIG. 1  is a plan view showing a cosmetic device according to an embodiment of the present invention.  
         [0033]      FIG. 2  is a longitudinal cross sectional view showing an A-A cross section in  FIG. 1 .  
         [0034]      FIG. 3  is a cross sectional view showing a peripheral portion of a surface-wave-generating material  60  in a cosmetic device  1  according to an embodiment of the present invention.  
         [0035]      FIG. 4  is a front view showing a position in which the surface-wave-generating material  60  in the cosmetic device  1  according to the embodiment of the present invention supports a ultrasonic transducers  20 .  
         [0036]      FIG. 5  is a lateral view showing the ultrasonic transducers  20  and the surface-wave-generating material  60  in the cosmetic device  1  according to the embodiment of the present invention.  
         [0037]      FIG. 6  is a front view showing a cosmetic device according to an embodiment of the present invention.  
         [0038]      FIG. 7  is a longitudinal cross sectional view showing an A-A cross section in  FIG. 6 .  
         [0039]      FIG. 8  is a backside view of a cosmetic device  1 ′ according to an embodiment of the present invention with the belt  50 ′ removed.  
         [0040]      FIG. 9  is an explanation drawing of the cosmetic device  1 ′ according to another embodiment of the present invention.  
         [0041]      FIG. 10  is a longitudinal cross sectional view showing an A-A cross section in  FIG. 9 .  
         [0042]      FIG. 11  is a longitudinal cross sectional view showing the relevant part of the fluid-storing portion  10 ′ of the cosmetic device  1 ′ according to the embodiment of the present invention.  
         [0043]      FIG. 12  is a longitudinal cross sectional showing a B-B cross section in  FIG. 9 .  
         [0044]      FIG. 13  is a block diagram showing a main electrical configuration of the cosmetic device  1 ′ according to an embodiment of the present invention.  
         [0045]      FIG. 14  is a time chart showing timing in which respective ultrasonic transducers of the cosmetic device  1 ′ according to an embodiment of the present invention vibrate. 
     
    
       [0046]     Explanation of symbols used is as follows:  1 : Cosmetic device;  10 : Fluid-storing portion;  11 : Body-contacting surface;  12 : Backside surface;  13 : Fluid;  20 : Ultrasonic transducer;  21 : Vibration surface;  30 : Vibration-prevention layer;  50 : Belt;  51 : Ring material;  60 : Surface-wave-generating material;  61 : Contact surface (incidence plane);  62 : Supporting surface;  70 : Surface wave;  1 ′: Cosmetic device;  10 ′: Fluid-storing portion;  11 ′: Contact area;  12 ′: Surface:  13 ′: Fluid;  14 ′: Partition-wall;  15 ′: Pore;  20 ′: Ultrasonic transducer;  31 ′: Input portion;  32 ′: Ultrasonic-wave-generating portion;  33 ′: Controller;  34 ′: Oscillator;  35 ′: Ring counter;  36 ′: FET switch;  50 ′: Belt;  51 ′: Ring material.  
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0047]     The present invention is described in detail with referent to the drawings.  FIG. 1  shows a plan view of the cosmetic device  1  according to the present invention.  FIG. 2  is an A-A cross section of  FIG. 1 . The present invention should not be limited to these embodiments.  
         [0048]     The cosmetic device  1  compresses a fluid-storing portion  10 , four ultrasonic transducers  20   a ,  20   b ,  20   c  and  20   d  (hereinafter referred to as “ultrasonic transducers  20 ” if these are referred to generically) and a surface-wave-generating material  60 .  
         [0049]     As shown in  FIG. 1  and  FIG. 2 , the ultrasonic transducers  20  are supported by the surface-wave-generating material  60 . Additionally, the surface-wave-generating material  60  is disposed so as to contact an edge of the fluid-storing portion  10 . By this construction, when vibration generated by the ultrasonic transducers  20  is propagated to the surface-wave-generating material  60  as described later, the vibration is propagated to the fluid-storing portion  10  as surface waves.  
         [0050]     Additionally, the cosmetic device  1  compresses a rubber vibration-prevention layer  30  along a backside surface  12  of the fluid-storing portion  10 . By this vibration-prevention layer, vibration of a surface on the opposite side of the body-contacting surface  11  of the cosmetic device  1  is prevented, and at the same time, the body-contacting surface  11  of the cosmetic device  1  can be vibrated efficiently. For this vibration-prevention layer, any material which can absorb an impact given by the vibration can be used in addition to rubber.  
         [0051]     Additionally, as shown in  FIG. 1  and  FIG. 2 , the cosmetic device  1  compresses the fluid-storing portion  10 , ultrasonic transducers  20  and a belt  50  which supports the surface-wave-generating material  50  from the reverse side of the body-contacting surface  11  in the fluid-storing portion  10 . At one end of the belt  50 , a ring material  51  used for attaching the belt to a part of the body along with the fluid-storing portion  10 , the ultrasonic transducers  20 , and the surface-wave-generating material  60  is provided. With this ring material  51 , after the cosmetic device  1  is placed with the body-contacting surface  11  of the fluid-storing portion  10  facing the body, attaching the cosmetic device  1  around the body becomes possible by winding an end of the belt  50  around the ring material  51  and fixing it with a flat fastener not shown.  
         [0052]     The fluid-storing portion  10  is formed using, e.g. a soft vinyl chloride resin. The fluid-storing portion  10  comprises a pouched material, on whose surface the body contact surface  11  and the backside surface  12  are formed. The body-contacting surface  11  is planate, which allows contacting the body. Additionally, at the edge of the backside surface  12 , the surface-wave-generating material  60  is installed.  
         [0053]     Furthermore, inside the fluid-storing portion  10 , a fluid  13  is housed. With this construction, it becomes possible to contact the body-contacting surface  11  with the body in accordance with a shape of the body. Additionally, in this specification, gels that sol solidifies to a jelly, creams, etc. are all referred to as fluids.  
         [0054]      FIG. 3  is an enlarged cross section showing a peripheral portion of the surface-wave-generating material  60  in the cosmetic device  1  according to the present invention.  FIG. 4  is a front view showing a position in which the surface-wave-generating material  60  in the cosmetic device  1  according to the present invention supports the ultrasonic transducers  20 .  
         [0055]     The ultrasonic transducers  20 , as shown in  FIG. 3 , has a given angle of gradient with the body-contacting surface  11  of the fluid-storing portion  10  and is supported by the surface-wave-generating material  60  in a manner that the sliding surface  21  of the ultrasonic transducers  20  is positioned facing the fluid-storing portion  10 . Consequently, surface waves  70  propagated to the fluid-storing portion  10  via the surface-wave-generating material  60  are propagated parallel to the body-contacting surface  11  of the fluid-storing portion  10 . Thus, it becomes possible to propagate the surface waves  70  to the entire surface of the fluid-storing portion  10 .  
         [0056]     Additionally, as shown in  FIG. 4 , four ultrasonic transducers  20   a ,  20   b ,  20   c  and  20   d  are disposed side by side and parallel to a contacting surface (incidence plane)  61  in the surface-wave-generating material  50 . Consequently, it becomes possible to give ultrasonic vibration to the entire surface of the contacting surface  61  in the surface-wave-generating material  60 .  
         [0057]      FIG. 5  is a lateral view of the ultra transducers  20  and the surface-wave-generating material  60  in the cosmetic device  1  according to the present invention.  
         [0058]     The surface-wave-generating material  60 , as shown in  FIG. 5 , has the contacting surface  61  which contacts the backside surface  12  of the fluid-storing portion  10  and a supporting surface  62  which supports the ultrasonic transducers  20 . The contacting surface  61  and the supporting surface  62  have a given angle. Vibration generated by the ultrasonic transducers  20  proceeds inside the surface-wave-generating material  60  as longitudinal waves. These longitudinal waves change to transversal waves by colliding with the contacting surface  61 , and are propagated along the fluid-storing portion  10  as surface waves  70 . At this time, the center of the contacting surface  61  and the normal line from nearly the center of the ultrasonic transducers cross. By this, it becomes possible to effectively propagate the surface waves  70  to the fluid-storing portion  10 .  
         [0059]     As mentioned above, on the backside surface  12  of the fluid-storing portion  10 , a rubber vibration-prevention layer  30  is provided. By this vibration-prevention layer, vibration of the backside surface of the body-contacting surface  11  of the cosmetic device  1  is prevented, and at the same time, it becomes possible to vibrate the body-contacting surface  11  of the cosmetic device  1  efficiently using the above-mentioned surface waves  70 .  
         [0060]     Furthermore, this contacting surface  61  is constructed to be a convex planar surface. With this construction, only vibration generated at the contacting surface  61  is propagated to the fluid-storing portion  10 . Consequently, it becomes difficult for other surface waves having different phases to interfere the surface waves propagated to the fluid-storing portion, enabling the surface waves  70  to be further efficiently propagated to the fluid-storing portion  10 .  
         [0061]     As a material for the surface-wave-generating material  60 , acrylic resin is one example; various materials including metals such as iron and aluminum, which can propagate ultrasonic vibration, can be used.  
         [0062]     To obtain a propagation depth of the surface waves  70  of approximately 35 mm against the fluid-storing portion  10 , which is effective to get cosmetic effects, setting a frequency of the ultrasonic transducer  20  at approximately 80 KHz is preferable.  
         [0063]     The cosmetic device  1  according to the above-mentioned embodiment compresses the belt  50  which supports the fluid-storing portion  10  and the ultrasonic transducers  20  from the reverse side of the body-contacting surface  11  in the fluid-storing portion  10 . The belt  50  can be omitted.  
         [0064]     Additionally, the cosmetic device  1  according to the above-mentioned embodiment compresses four ultrasonic transducers  20   a ,  20   b ,  20   c  and  20   d . The number of the ultrasonic transducers is not limited to four and can be one or more.  
         [0065]     In another embodiment of the present invention, the transducers can be disposed differently to use vertical propagation of ultrasonic waves. This type of embodiment is described in detail with referent to the drawings.  FIG. 6  shows a front view of the cosmetic device  1 ′ according to the present invention.  FIG. 7  is a longitudinal cross section showing an A-A cross section in  FIG. 6 .  FIG. 8  is a backside view of a cosmetic device  1 ′ according to the present invention with the belt  50 ′ removed.  
         [0066]     The cosmetic device  1 ′ compresses a fluid-storing portion  10 ′, ultrasonic transducers  20 ′. The fluid-storing portion  10 ′ comprises a pouched material on whose surface a contact surface is formed. This contact surface is planate so as to be able to contact the body. The ultrasonic transducers are disposed on a surface  12 ′ on the reverse side of the contact surface  11 ′ in the fluid-storing portion  10 ′.  
         [0067]     Additionally, the cosmetic device  1 ′ compresses a belt  50  which supports the fluid-storing portion  10 ′ and the ultrasonic transducers  20 ′ from the reverse side of the contact surface  11 ′ in the fluid-storing portion  10 ′. At one end of the belt  50 ′, a planar fastener  52 ′ used for attaching the belt  50 ′ to a part of the body along with the fluid-storing portion  10 ′ and the ultrasonic transducers  20 ′ is provided. With this fastener provided, after the cosmetic device  1  is placed with the contact surface  11 ′ of the fluid-storing portion  10 ′ facing the body, the cosmetic device  1 ′ can be attached around the body by fixing the end of the belt  50 ′ using the planar fastener  52 ′.  
         [0068]     The fluid-storing portion  10 ′ is formed using, e.g. a soft vinyl chloride resin. Inside the fluid-storing portion  10 ′, a fluid  13 ′ is housed. This construction enables the contact surface  11 ′ to contact a part of the body in accordance with a body shape. Additionally, in this specification, high-viscosity liquids, semifluids, or gels that sol solidifies to a jelly, creams and regular liquids are all referred to as fluids.  
         [0069]     The cosmetic device  1  according to the above-mentioned second embodiment comprises the belt  50 ′ which supports the fluid-storing portion  10 ′ and the ultrasonic transducers  20 ′ from the reverse side of the body contact are  11 ′ in the fluid-storing portion  10 ′. The belt  50 ′ can be omitted.  
         [0070]     Another embodiment of the present invention is described with referent to the drawings.  FIG. 9  is an explanation drawing of the cosmetic device  1 ′ according to the third embodiment of the present invention.  FIG. 10  is a longitudinal cross section showing an A-A cross section in  FIG. 9 .  
         [0071]     The cosmetic device  1 ′ compresses a fluid-storing portion  10 ′, ten ultrasonic transducers  20 ′ a ,  20 ′ b ,  20 ′ c ,  20 ′ d ,  20 ′ e ,  20 ′ f ,  20 ′ h ,  20 ′ i  and  20 ′ j  (hereinafter referred to as “ultrasonic transducers  20 ′” if these are referred to generically). The fluid-storing portion  10 ′ comprises a pouched material on whose surface a contact surface which can contact the body is formed. This contact surface is planate so as to be able to contact the body. The ultrasonic transducers  20 ′ are disposed on the surface  12 ′ on the reverse side of the contact surface  11 ′ in the fluid-storing portion  10 ′.  
         [0072]     Additionally, the cosmetic device  1 ′ compresses a belt  50 ′ which supports the fluid-storing portion  10 ′ and ultrasonic transducers  20 ′ from the reverse side of the body contact surface  11 ′ in the fluid-storing portion  10 ′. At one end of the belt  50 ′, a ring material  51 ′ used for attaching the belt  50 ′ to a part of the body along with the fluid-storing portion  10 ′ and the ultrasonic transducers  20 ′ is provided. With this ring material  51 ′ provided, after the cosmetic device  1 ′ is placed with the contact surface  11 ′ of the fluid-storing portion  10 ′ facing the body, attaching the cosmetic device  1 ′ around the body becomes possible by winding an end portion of the belt  50 ′ around the ring material  51 ′ and fixing it by a flat fastener not shown.  
         [0073]     The fluid-storing portion  10 ′ is formed using, e.g. a soft vinyl chloride resin. Inside the fluid-storing portion  10 ′, a fluid  13 ′ is housed. This construction enables the contact surface  11 ′ to contact a part of the body in accordance with a body shape.  
         [0074]      FIG. 11  is a longitudinal cross section showing the relevant part of the fluid-storing portion  10 ′ of the cosmetic device  1 ′ according to the third embodiment of the present invention.  FIG. 12  is a longitudinal cross section showing a B-B cross section in  FIG. 9 .  
         [0075]     As shown in  FIG. 11  and  FIG. 12 , the fluid-storing portion  10 ′ compresses partition-walls  14 ′ dividing a fluid housed inside the fluid-storing portion into five surfaces. In respective surfaces divided by the partition-walls  14 ′, two ultrasonic transducers each are arranged. With this construction, it becomes possible to stabilize the fluid housed inside the surfaces divided by the partition-walls  14 ′.  
         [0076]     Additionally, as shown in  FIG. 11  and  FIG. 12 , multiple pores  15 ′ through which the fluid  13 ′ can pass are formed in the partition-walls  14 ′. With this construction, it becomes possible that the fluid  13 ′ moves inside the fluid-storing portion according to shape change in the cosmetic device  1 ′ due to concavity and convexity of the body and the cosmetic device  1 ′ is contacted with the body.  
         [0077]      FIG. 13  is a block diagram showing a main electrical configuration of the cosmetic device  1 ′ according to the third embodiment of the present invention.  
         [0078]     The cosmetic device  1  compresses an ultrasonic-wave-generating portion  32 ′ which generates ultrasonic signals, and an input portion  31 ′ connected to a controller  33 ′ which functions as a control unit for the ultrasonic-wave-generating portion  32 ′.  
         [0079]     Additionally, this cosmetic device  1  compresses a FET switch  36 ′ and a oscillator  34 ′ which feeds clock signals of approximately 5 Hz indicating a switching timing to a ring counter  35 ′ used for switching the FET switch  36 ′.  
         [0080]     The ultrasonic-wave-generating portion  32 ′ generates two types of ultrasonic signals with 3 MHz frequency and 2 MHz frequency. Ultrasonic waves with 3 MHz ultrasonic frequency reaches the FET switch  36 ′ via wiring  43 ′ and a switch  38 ′, and is fed to five ultrasonic transducers  20 ′ a ,  20 ′ c ,  20 ′ e ,  20 ′ g  and  20 ′ i  via wiring  41  from the FET switch  36 ′. Ultrasonic waves with 2 MHz ultrasonic frequency reaches the FET switch  36 ′ via wiring  45 ′ and a switch  49 ′, and is fed to five ultrasonic transducers  20 ′ b ,  20 ′ d ,  20 ′ f ,  20 ′ h  and  20 ′ j  via the wiring  41 ′ from the FET switch  36 ′.  
         [0081]     In the cosmetic device  1 ′ having the electrical configuration shown in  FIG. 13 , the ultrasonic-wave-generating portion  32 ′ and the ultrasonic transducers  20 ′ are connected sequentially by the action of the ring counter  35 ′ and the FET switch  36 ′ in a timely manner described later and each of ultrasonic transducers  20 ′ vibrates sequentially. At this time, the switch  38 ′ is closed and the switch  39 ′ is opened when the ultrasonic-wave-generating portion  32 ′ and the ultrasonic transducers  20 ′ a ,  20 ′ c ,  20 ′ e ,  20 ′ g  and  20 ′ i  are connected. When the ultrasonic-wave-generating portion  32 ′ and the ultrasonic transducers  20 ′ b ,  20 ′ d ,  20 ′ f ,  20 ′ h  and  20 ′ j  are connected, the switch  39 ′ is closed and the switch  38 ′ is opened.  
         [0082]      FIG. 14  is a time chart showing timing according to which respective ultrasonic transducers of the cosmetic device  1 ′ according to the third embodiment of the present invention vibrate.  
         [0083]     As shown in  FIG. 14 , the ultrasonic transducer  20 ′ a  first vibrates for time t, which is 0.4 seconds when a frequency of a clock signal given to the ring counter  35 ′ from the oscillator  34 ′ is 2.5 Hz. As soon as the vibration of the ultrasonic transducer  20 ′ a  stops, the ultrasonic transducer  20 ′ b  vibrates. By repeating this sequence, 10 ultrasonic transducers  20 ′ a ,  20 ′ b ,  20 ′ c ,  20 ′ d ,  20 ′ e ,  20 ′ f ,  20 ′ h ,  20 ′ i  and  20 ′ j  vibrate in this order.  
         [0084]     Consequently, even in a configuration in which this cosmetic device contacts the skin at all times, excessive stimulation is not applied to the skin.  
         [0085]     In the above-mentioned embodiment, ultrasonic vibration is given in the order of the ultrasonic transducer  20 ′ a , the ultrasonic transducer  20 ′ b , the ultrasonic transducer  20 ′ c , the ultrasonic transducer  20 ′ d , the ultrasonic transducer  20 ′ e , the ultrasonic transducer  20 ′ f , the ultrasonic transducer  20 ′ g , the ultrasonic transducer  20 ′ h , the ultrasonic transducer  20 ′ i , and the ultrasonic transducer  20 ′ j . Ultrasonic vibration can be given in the order of the ultrasonic transducer  20 ′ a , the ultrasonic transducer  20 ′ b , the ultrasonic transducer  20 ′ d , the ultrasonic transducer  20 ′ f , the ultrasonic transducer  20 ′ h , the ultrasonic transducer  20 ′ j , the ultrasonic transducer  20 ′ i , the ultrasonic transducer  20 ′ g , the ultrasonic transducer  20 ′ e , and the ultrasonic transducer  20 ′ c.    
         [0086]     Additionally, ultrasonic vibration is given to ten ultrasonic transducers  20 ′ a ,  20 ′ b ,  20 ′ c ,  20 ′ d ,  20 ′ e ,  20 ′ f ,  20 ′ h ,  20 ′ i  and  20 ′ j  randomly using a random number, etc.  
         [0087]     Furthermore, although in the above-mentioned embodiment, a configuration in which ultrasonic vibration is given to a single ultrasonic transducer of ten ultrasonic transducers  20 ′ a ,  20 ′ b ,  20 ′ c ,  20 ′ d ,  20 ′ e ,  20 ′ f ,  20 ′ h ,  20 ′ i  and  20   j  sequentially is used, a configuration in which ultrasonic vibration can be given to multiple ultrasonic transducers simultaneously can also be used. For example, ultrasonic vibration is given first to the ultrasonic transducer  20 ′ a , the ultrasonic transducer  20 ′ b , and the ultrasonic transducer  20 ′ c  for time t; subsequently to the ultrasonic transducer  20 ′ g , the ultrasonic transducer  20 ′ h , and the ultrasonic transducer  20 ′ i  for time t; then to the ultrasonic transducer  20 ′ j , the ultrasonic transducer  20 ′ a , and the ultrasonic transducer  20 ′ b ; thereafter, a sequence of giving ultrasonic vibration to three ultrasonic transducers at a time is repeated.