KR20190088953A - Skin therapy device - Google Patents

Abstract

The present invention relates to a skin therapy device comprising: an LED assembly in which a plurality of first LEDs emitting light of a first wavelength, a plurality of second LEDs emitting light of a second wavelength, and a plurality of third LEDs emitting light of a third wavelength are embedded; a battery which supplies power to the first LEDs, the second LEDs, and the third LEDs; and a control module which controls operations of the first LEDs, the second LEDs, and the third LEDs, wherein the control module detects voltages applied to the first LEDs, the second LEDs, and the third LEDs, respectively, from the battery and controls duty ratios of pulse width modulation (PWM) signals applied to the first LEDs, the second LEDs, and the third LEDs, respectively, to correspond to the detected voltages.

Description

Skin Therapy Device {SKIN THERAPY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin therapy apparatus, and more particularly, to a skin therapy apparatus that irradiates light of a specific wavelength onto skin to perform a therapeutic function.

Cosmetics are widely used as a way to keep facial skin from losing elasticity and to maintain youthful beauty.

However, since a skin barrier is formed and protected by a thick protein protective layer under the stratum corneum of the skin epidermis and the epidermis and dermis layer of the skin are separated by the protein protective layer, even if a cosmetic product There is a limit in removing the waste accumulated in the dermis layer, and the effect of skin protection is insufficient because the nutrition of cosmetics can not penetrate deep into the dermis layer.

In order to solve these problems, various kinds of skin aesthetic devices for skin care using light irradiation have recently been put on the market. However, since such skin aesthetic devices are manufactured so as to irradiate only a single wavelength of light, Tissue and subcutaneous fat layer.

However, the beauty devices according to the prior art have a problem in that the skin care effect is remarkably lowered as the voltage supplied from the battery is lowered due to long-term use.

Korean Patent Registration No. 10-1191951

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a skin therapy apparatus, which comprises a plurality of first LEDs for emitting light of a first wavelength, a plurality of second LEDs for emitting light of a second wavelength, A plurality of third LEDs for emitting a light having a third wavelength are mounted on the LED assembly.

The skin therapy apparatus according to the present invention increases the duty ratio of a pulse width modulation (PWM) signal when the voltage applied to the first LED, the second LED and the third LED from the battery is lowered Thereby uniformly irradiating the light source even when the performance of the battery deteriorates, thereby providing a uniform skin treatment effect.

In order to solve the above-mentioned problems, the skin therapy apparatus according to the present embodiment includes a plurality of first LEDs that emit light of a first wavelength, a plurality of second LEDs that emit light of a second wavelength, An LED assembly in which a plurality of diverging third LEDs are mounted; A battery for supplying power to the first LED, the second LED and the third LED; And a control module for controlling operations of the first LED, the second LED and the third LED, wherein the control module controls the first LED, the second LED and the third LED from the battery A duty ratio of a pulse width modulation (PWM) signal applied to the first LED, the second LED and the third LED in accordance with the detected voltage, According to another embodiment of the present invention, as the voltage applied to the first LED, the second LED and the third LED from the battery is gradually lower than the reference voltage, , The duty ratio of a pulse width modulation (PWM) signal applied to the second LED and the third LED may be gradually increased.

According to another embodiment of the present invention, when the voltage applied to the first LED, the second LED and the third LED from the battery is lower than a reference voltage, the control module controls the first LED, The duty ratio of a pulse width modulation (PWM) signal applied to the first LED, the second LED, and the third LED is increased, Values can be kept constant.

According to another embodiment of the present invention, the control module includes a printed circuit board on which circuit elements for controlling lighting of at least one of the first LED, the second LED and the third LED are mounted; And a control module supporter having a battery receiving portion for supporting the battery and a substrate receiving portion for receiving the printed circuit board formed thereon.

According to another embodiment of the present invention, a first switch element for controlling ON / OFF of a power source applied to the first LED, the second LED and the third LED is formed on an upper surface of the PCB, A second switch element for selecting and controlling the light emission pattern mode of the first LED, the second LED and the third LED; And an insertion hole is formed in a region corresponding to the first switch element and the second switch element in a front portion of a lower portion of the body and an insertion hole is formed in the insertion hole, Can be inserted and coupled.

According to another embodiment of the present invention, the input module includes a first button and a second button for respectively applying an external force to the first switch element and the second switch element, A button unit formed so that one side is exposed to the outside through the insertion hole; An input module supporter disposed between the button unit and the control module and elastically supporting the button unit; And a coupling member for coupling the button unit and the input module support unit.

According to another embodiment of the present invention, the first LED is a blue LED, the second LED is a red LED, and the third LED is an Infra Red (IR) LED .

A skin therapy apparatus according to an embodiment of the present invention includes a plurality of first LEDs that emit light of a first wavelength, a plurality of second LEDs that emit light of a second wavelength, and a plurality of second LEDs that emit light of a third wavelength, With the LED assembly in which 3 LEDs are mounted, it is possible to treat skin with various effects.

The skin therapy apparatus according to an embodiment of the present invention can reduce the duty ratio of a pulse width modulation (PWM) signal when the voltage applied to the first LED, the second LED, ), It is possible to maintain the value of the current applied to the first, second, and third LEDs constant, and to uniformly illuminate the light source even when battery performance deteriorates, thereby providing a uniform skin treatment effect have.

1 and 2 are a perspective view and an exploded perspective view of a skin therapy device according to an embodiment of the present invention.
3 is a top view of an LED assembly of a configuration of a skin therapy device according to an embodiment of the present invention.
4 is a block diagram of a skin therapy apparatus according to an embodiment of the present invention.
5 and 6 are a perspective view and an exploded perspective view of a control module of the skin therapy apparatus according to an embodiment of the present invention.
FIGS. 7 to 10 are views for explaining a method of maintaining a constant current value applied to each LED by the skin therapy apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention. In addition, the size of each component in the drawings may be exaggerated for the sake of explanation and does not mean a size actually applied.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, throughout the specification, when an element is referred to as being "coupled" or "coupled" to another element, the element may be directly connected or directly coupled to the other element, It should be understood that, unless an opposite substrate is present, it may be connected or coupled via another component in the middle. Also, throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 are a perspective view and an exploded perspective view of a skin therapy apparatus according to an embodiment of the present invention, and FIG. 3 is a plan view of an LED assembly among structures of a skin therapy apparatus according to an embodiment of the present invention.

1 and 2, a skin therapy device according to an embodiment of the present invention includes an LED assembly 100, a body 200, a control module 300, an input module 400, a lid 500 And an LED cover lens 10.

As shown in FIG. 2, the LED assembly 100 is inserted into an upper portion 210 of a body 200, which will be described later, and emits light irradiated to the user's skin.

The front face of this LED assembly 100 is configured to include a substrate 110 and a plurality of LEDs 120, 130, 140 mounted on the substrate 110 as shown in Figure 3 (a) The backside of the LED assembly 100 may also include a motor 160 that provides a massage function through vibration as shown in FIG. 3 (b).

The LED assembly 100 of the skin therapy device according to an exemplary embodiment of the present invention includes a plurality of first LEDs 120 that emit light of a first wavelength, a plurality of second LEDs 120 that emit light of a second wavelength, (130) and a plurality of third LEDs (140) emitting light of a third wavelength.

That is, three kinds of LEDs are mounted on the substrate 110 so that three types of light can be emitted, and the first wavelength, the second wavelength, and the third wavelength can be determined as depths penetrating into the skin, respectively.

More specifically, the first LED 120 is a blue LED, the second LED 130 is a red LED, and the third LED 140 is an Infra Red (IR) LED A blue LED that is a first LED 120 is disposed at a central portion of the substrate 110 and a red LED 130 that is the second LED 130 is disposed around the first LED 120. [ And an infrared (IR) LED, which is the third LED 140, may be alternately arranged.

For example, a blue LED can emit light with a wavelength of 415 nm to penetrate into the skin epithelium, stimulating porphyrin to destroy the bacteria. It is possible to sterilize acne bacterium through this, and to suppress inflammation of acne scars through inflammation-inhibiting action, to suppress sebaceous secretion through sebaceous shrinkage action, and to exert an effect to trim skin texture by epidermal regenerating action .

In addition, the red LED emits light having a wavelength of 630 nm, allowing penetration into the dermal tissue of the skin, enabling cell conduction and surface circulation, and releasing hemorrhagic inflammation. Through this, it is possible to expect the effect of inhibiting inflammation such as alleviating the red spot of acne mark, improving the keratin / shade burden, enhancing skin elasticity through promoting collagen production, improving the fine lines, and promoting blood circulation.

In addition, Infrared LED emits near-infrared light with a wavelength of 830nm and penetrates into the subcutaneous fat layer, thereby improving skin sagging, lifting, strengthening skin elasticity, improving pores / regulation lines, promoting skin metabolism, You can expect. That is, the first LED 120, the second LED 130, and the third LED 140, which emit light of different wavelengths, respectively, can illuminate the user with light of a wavelength suitable for the situation, The first LED 120, the second LED 130 and the third LED 140 are controlled by the control module 300, which will be described later.

The first LED 120, the second LED 130 and the third LED 140 may be mounted radially as shown in Figure 3 and may be optimized for other arrangements for efficient skin therapy .

3, a plurality of grooves 150 are formed on the outer periphery of the substrate 100 of the LED assembly 100. The plurality of grooves 150 are formed on the inner peripheral surface of the upper portion of the body 200 And the grooves 151 are coupled to the guide protrusions.

The LED cover lens 10 is preferably formed of a transparent material because the first LED 120, the second LED 130 and the third LED 140 must emit light to the outside. Further, It is also possible to form various patterns for light diffusion.

In addition, the skin therapy apparatus according to an embodiment of the present invention provides a massage function using the motor 160 in addition to the skin treatment using the light as described above, thereby providing more improved skin treatment and cosmetic effects.

FIG. 4 is a configuration diagram of a skin therapy apparatus according to an embodiment of the present invention, and FIGS. 5 and 6 are a perspective view and an exploded perspective view of a control module of the skin therapy apparatus according to an embodiment of the present invention.

4 to 6, the skin therapy apparatus according to an exemplary embodiment of the present invention includes an LED assembly 100, a control module 300, and a battery 320.

As described above, the LED assembly 100 includes a plurality of first LEDs 120 that emit light of a first wavelength, a plurality of second LEDs 130 that emit light of a second wavelength, A plurality of third LEDs 140 that emit light are mounted.

The control module 300 controls the operation of the first LED 120, the second LED 130 and the third LED 140 mounted on the LED assembly 100. [

The control module 300 controls the operation of the first LED 120, the second LED 130 and the third LED 140 by supplying power from the battery 320. [

More specifically, the control module 300 detects voltages applied to the first LED 120, the second LED 130 and the third LED 140 from the battery 320, respectively, A duty ratio of a pulse width modulation (PWM) signal applied to the first LED 120, the second LED 130 and the third LED 140 corresponding to the detected voltage, Respectively.

The control module 300 controls the voltage applied to the first LED 120, the second LED 130 and the third LED 140 from the battery 320 according to an embodiment of the present invention. The duty ratio of a pulse width modulation (PWM) signal applied to the first LED 120, the second LED 130, and the third LED 140, Respectively.

Accordingly, current values applied to the first LED, the second LED and the third LED are kept constant, respectively.

That is, according to the present invention, when the voltage applied from the battery 320 to the first LED 120, the second LED 130, and the third LED 140 is lowered, the pulse width modulation The voltage of the battery 320 is maintained at a constant value by increasing the duty ratio of the PWM signal to the first, second and third LEDs 120, 130 and 140, It is possible to irradiate a uniform light source even if it is weakened.

The control module 300 may control the first, second, and third LEDs 120, 130, and 140 in response to a change in the voltage drop of the battery 320, And a pulse width modulation unit for increasing the duty of the pulse width modulation signal applied to the pulse width modulation signal and controlling the variation of the duty value of the pulse width modulation signal.

5 and 6, the control module 300 may include at least one of the first LED 120, the second LED 130, and the third LED 140 on the printed circuit board 310, May be implemented by mounting various circuit elements.

The first LED 120, the second LED 130 and the third LED 140 are connected to the front surface of the PCB 310 by a first switch element 311 A second switch element 312 for controlling the light emission pattern mode of the first LED 120, the second LED 130 and the third LED 140 and a light emitting element 314 may be mounted.

A control IC for controlling the current applied to the first LED 120, the second LED 130 and the third LED 140 and a power source for the battery 320 are connected to the rear surface of the printed circuit board 310 And a power module for stabilizing the power can be mounted.

In particular, in the light emission pattern mode that can be selected by the second switch device 312, only one of the first LED 120, the second LED 130 and the third LED 140 may be set to be lit , And may be set to simultaneously light a plurality of kinds of LEDs.

For example, a first mode for simultaneously turning on the first LED 120 and the third LED 140 that emit light of a first wavelength of 415 nm and a wavelength of 830 nm, respectively, A second mode for simultaneously turning on the second LED 130 and the third LED 140 that emit light of a second wavelength and a third wavelength that is a wavelength of 830 nm and a second mode for simultaneously turning on the first LED 120, And the third mode in which both the first LED 130 and the third LED 140 are turned on at the same time.

Through this, it is possible to simultaneously obtain the therapeutic effect expressed at different skin depths.

Meanwhile, the battery 320 is configured to supply power to at least one of the first LED 120, the second LED 130, and the third LED 140.

The battery 320 is preferably a chargeable battery. Further, by disposing an external power supply terminal under the lid unit 500, the user can easily charge the battery have.

The control module supporter 330 is configured to support and receive the printed circuit board 310 and the battery 320. Specifically, the control module supporter 330 includes a substrate supporter 330 for accommodating the printed circuit board 310, And a battery receiving portion 332 for supporting the battery 320 is formed at a lower portion thereof.

In particular, a plurality of protrusions may be formed on the control module supporter 330 to firmly connect the printed circuit board 310 to the substrate accommodating portion 331.

For example, as shown in FIG. 6, the printed circuit board 310 is formed in a rectangular shape, and a first alignment groove 315a and a second alignment groove 315b are formed on the left upper end and the right upper end of the printed circuit board 310, The first fixing protrusions 334a and the second fixing protrusions 334b are formed on the control module supporter 330 so that the lower left and lower right corners of the printed circuit board 310 can be respectively inserted into the control module supporter 330, And a first alignment protrusion 333a and a second alignment protrusion 333b provided at positions corresponding to the first alignment groove 315a and the second alignment groove 315b of the printed circuit board 310 .

The lower left and lower right ends of the printed circuit board 310 are connected to the first and second ends of the control module supporter 330. In this case, Into the grooves formed on the inner side of the fixing projections 334a and the second fixing projections 334b.

The first alignment groove 315a and the second alignment groove 315b of the printed circuit board 310 are supported by the first fixing protrusions 334a and the second fixing protrusions 334b of the control module supporter 330, The circuit board 310 is fixed to the control module supporter 330 so that the printed circuit board 310 can be stably fixed to the control module supporter 330.

The printed circuit board 310 and the battery 320 are mounted on the board receiving portion 331 and the battery receiving portion 332 of the control module supporting portion 330 and are then coupled to the body 200.

In this case, the control module support part 330 includes an upper locking part 335 for firm and easy coupling of the control module 300 in the body 200, .

This allows the control module 300 to be firmly coupled to the body 200 and accurately assembled.

When the control module 300 slides inside the body 200 to accurately align the control module 300 when the control module 300 is assembled in the body 200, The outer surface of the first fixing protrusion 334a and the second fixing protrusion 334b may be in contact with the inner surface of the body 200.

When the voltage applied to the first LED 120, the second LED 130 and the third LED 140 is lowered while the control module 300 is stably fixed, the pulse width modulation The duty ratio of the pulse width modulation (PWM) signal is increased, so that the value of the current applied to the first, second and third LEDs 120, 130 and 140 can be kept constant , The light source can be stably and uniformly irradiated.

7 to 10 are diagrams for explaining a method of maintaining a constant current value applied to each LED by the skin therapy apparatus according to an embodiment of the present invention. More specifically, FIG. 8 is a diagram for explaining a method of maintaining a current value applied to an LED through control of a pulse width modulation signal of a blue LED, 9 is a view for explaining a method of maintaining a current value applied to an LED through control of a pulse width modulation signal of a red LED and FIG. 10 is a diagram for explaining a method of maintaining a current value applied to an infrared LED Fig. 2 is a diagram for explaining a method for maintaining the same.

According to the present invention, as shown in FIG. 7 to FIG. 10, the duty of a pulse width modulation (PWM) signal applied to each LED corresponds to the voltage applied to each LED from the battery becomes lower than the reference voltage, The duty ratio is increased to keep the current values applied to the LEDs constant.

That is, when the voltage applied to the blue LED is lowered from 4.2 V to 3.9 V as shown in FIG. 8, the current applied to the blue LED gradually decreases to provide a uniform light source. However, According to the invention, by increasing the duty ratio of the Pulse Width Modulation (PWM) signal corresponding to the voltage applied to the blue LED from 4.2 V to 3.9 V, So that only a reduction of less than about 1% can be achieved with little or no change in current so that a very uniform light source can be provided.

Similarly, when the voltage applied to the red LED is lowered from 4.2 V to 3.9 V as shown in FIG. 9, conventionally, the current applied to the red LED gradually decreases to provide a uniform light source However, according to the present invention, by increasing the duty ratio of a pulse width modulation (PWM) signal corresponding to a decrease in the voltage applied to the red LED from 4.2 V to 3.9 V, It is possible to provide a uniform light source without changing the current applied to the light source.

10, when the voltage applied to the infrared LED is lowered from 4.2 V to 3.9 V, the current applied to the Infra Red (IR) LED conventionally decreases gradually, The duty ratio of the pulse width modulation (PWM) signal (corresponding to the decrease in the voltage applied to the infrared LED from 4.2 V to 3.9 V according to the present invention) duty ratio, it is possible to provide a uniform light source without changing the current applied to the Infra Red (IR) LED.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical spirit of the present invention should not be limited to the above-described embodiments of the present invention, but should be determined by the claims and equivalents thereof.

10: LED cover lens
100: LED assembly
200: Body
300: control module
400: input module
500:

Claims (6)

A plurality of first LEDs for emitting a first wavelength of light, a plurality of second LEDs for emitting a second wavelength of light, and a plurality of third LEDs for emitting a third wavelength of light are mounted on the substrate, An LED assembly in which a first LED is disposed in the center of the first LED and the second LED and the third LED are disposed in the vicinity of the first LED in an alternating arrangement;
A battery for supplying power to the first LED, the second LED and the third LED; And
And a control module for controlling operations of the first LED, the second LED and the third LED,
The control module includes:
Detecting a voltage applied to the first LED, the second LED and the third LED from the battery, respectively, and detecting a voltage applied to the first LED, the second LED and the third LED from the battery, The duty ratio of a pulse width modulation (PWM) signal applied to the first LED, the second LED and the third LED is increased to increase the duty ratio of the first LED, The first LED, the second LED, and the third LED.
The method according to claim 1,
The control module includes:
A printed circuit board on which circuit elements for controlling lighting of at least one of the first LED, the second LED and the third LED are mounted;
A control module supporter having a substrate accommodating portion for accommodating the printed circuit board and a battery accommodating portion for supporting the battery;
. ≪ / RTI >
The method of claim 2,
A first switch element for controlling ON / OFF of a power source applied to the first LED, the second LED and the third LED on an upper surface of the printed circuit board; A second switch element for selecting and controlling the light emission pattern mode of the first LED, the second LED and the third LED; And a light emitting element for indicating a state of charge of the battery,
Wherein an insertion hole is formed in a region corresponding to the first switch element and the second switch element in a front portion of a body to which the control module is coupled, and an input module is inserted into the insertion hole.
The method of claim 3,
Wherein the input module comprises:
A first button and a second button for applying an external force to the first switch element and the second switch element, respectively, and one side of the first button and the second button are exposed through the insertion hole, unit;
An input module supporter disposed between the button unit and the control module and elastically supporting the button unit; And
An engaging member for engaging the button unit and the input module support unit;
. ≪ / RTI >
The method according to claim 1,
Wherein the first LED is a blue LED, the second LED is a red LED, and the third LED is an Infra Red (IR) LED.
The method according to claim 1,
An LED cover lens formed of a transparent material and including a pattern for diffusing light on a surface thereof and emitting light from the first, second and third LEDs; And
The LED assembly includes a light source
Further comprising: a light source;

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