KR20180011431A - lighting source module of optical irradiation for caring a skin - Google Patents

Abstract

The present invention relates to a light source module of a light irradiating device for skin treatment capable of preventing glare of an operator by removing surrounding light excluding a treatment area and shortening a treatment time and increasing efficiency by improving light output. The present invention comprises an LED module and a reflector. The LED module constitutes a combination of a plurality of LEDs. The reflector includes a dual reflecting unit and a vertical blocking unit. The dual reflecting unit includes a first reflecting unit which is formed in a center unit, and a second reflecting unit which is formed in a surrounding unit which surrounds the center unit to be double wrapped; and reflects light emitted in the LED module. The vertical blocking unit is formed to be separated at a predetermined distance from an upper part of the LED module; is formed in the bottom center of the first reflecting unit and the second reflecting unit; is connected in a lower part of the first reflecting unit; and blocks vertical light generated in the LED module. The LED module is positioned in the bottom center of the first reflecting unit and the second reflecting unit.

Description

[0001] The present invention relates to a light source module for skin treatment,

The present invention relates to a light source module for an optical device, and more particularly, to a light source for skin treatment that can reduce peripheral light of a patient other than the treatment area to prevent glare of a practitioner, And a light source module.

In addition to light energy that converts electrical energy into light energy, it can be used to identify objects in the dark, and in recent years, it has also been used to produce indoor decorations and a cozy atmosphere.

Such illumination lamps are manufactured in various forms, and conventionally, a lighting apparatus using an incandescent lamp or a fluorescent lamp has been mainly used. However, incandescent lamps are inexpensive to manufacture, but they have a lot of heat in converting electric energy into light energy. Recently, they are not used. Fluorescent lamps have higher energy conversion efficiency than incandescent lamps, There are problems that take time and short life span.

In order to solve the above-mentioned problems, LED (Light Emitting Diode) has recently been developed which can obtain high illuminance with a semi-permanent lifetime and low power. These LED semiconductors have advantages such as fast processing speed and low power consumption, and are environmentally friendly as well as energy-saving effect, and they are becoming a next-generation strategic product.

In addition, the LED device is made of a junction of p-type and n-type semiconductor. When a voltage is applied, the energy corresponding to the bandgap of the semiconductor is emitted in the form of light by the combination of electron and hole Is a kind of optoelectronic device. Such LED devices have recently been developed in various colors to enable display of natural color and are applied to a variety of applications such as a large outdoor signboard for a outdoor use, a traffic light, an automobile instrument panel, a home appliance, a neon signboard, medical equipment, .

FIG. 1 is an exploded perspective view of an illumination lamp shown in FIG. 1, and FIG. 3 is an exploded perspective view of the illumination lamp shown in FIG. 1. FIG. Sectional view partially showing the illumination lamp shown.

As shown in FIGS. 1 to 3, the illumination lamp using the LED, which is the first preferred embodiment of the present invention, includes a fixing member 11 fixed to a wall such as a ceiling or the like and having a fastening bolt 11a protruded from its other side, (12) having a through hole (12a) having an open inside cavity and a square shape and into which a fastening bolt (11a) is inserted, and a ballast (13) A fixing bracket 13 provided at each of four corners of the frame 12 and formed with a pair of insertion grooves 13a at the side portions facing each other and having a fastening hole 13b penetrating along the center thereof, A spacer 14 that penetrates through four corners of the frame 12 and projects through a fastening hole 13b of the fixing bracket 13; (16a) fastened to the fixing bracket (15) A fixing pin 16 for covering and fixing the spacer 14 and a plurality of LEDs 21 electrically connected to the ballast 13 to emit light are mounted on one side and penetrated through the fastening bolt 11a A printed circuit board 20 on which a hole 20a is formed and a magnet 22 is mounted on four corners of the other side thereof and a printed circuit board 20 attached to one side of the printed circuit board 20 to which the LED 21 is attached, A reflection plate 23 surrounding the LED 21 and having a reflection surface 23a inclined so as to have a rectangular horn shape whose cross section is gradually enlarged around the LED 21 in front projection, A transmission member 25 in which a through hole 25a is formed and the printed circuit board 20 is covered and light is transmitted and a fixing member 25 which is fastened to an end of the fastening bolt 11a to fix the transmission member 25 And a fixing plate 26 having a female screw 26a formed at its central portion.

The transmissive member 25 may be formed of a translucent body, a variety of colors may be printed, or a rugged surface may be provided so that light may be irregularly reflected. However, the transmissive member 25 may be formed of a flat transparent body, do.

However, in the case of the above-described LED lighting source, since bright points appear in the illumination region by the LED numbers due to the vertical light generated from the LEDs, in the region where it is necessary to form uniform illumination light for a specific point, The uniformity of the irradiated surface is deteriorated and the color separation phenomenon is severe. Also, the conical reflection surface has a problem that the reflection area of a large number of LED lights is widened, and it is difficult to focus on a specific area.

The Applicant has thus greatly improved these problems with the prior art 10-1511664.

However, when applied as a light source for LED lighting for skin treatment, there is a problem that peripheral light may be influenced in areas other than the treatment area, and glare is provided to a practitioner using the LED illumination light source for skin treatment.

Registered Utility Model No. 20-0413523 Patent No. 10-1511664

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for removing a peripheral area other than a treatment area to prevent glare of a practitioner, And an object of the present invention is to provide a therapeutic light source module for treatment.

In order to achieve the above object, the light source module for skin treatment according to the present invention comprises: an LED module comprising a combination of a plurality of LEDs; And a second reflector formed in the center of the LED module and including a first reflector formed at a central portion and a second reflector formed at a periphery surrounding the center portion, the dual reflector reflecting the light generated from the LED module, And a vertical blocking portion formed at a bottom center of the first reflecting portion and the second reflecting portion and connected at a lower portion of the first reflecting portion to block vertical light generated in the LED module And a reflector, wherein the LED module is positioned at the bottom center of the first reflector and the second reflector.

The first and second reflectors may be concentrically formed around the LED module, and may have a predetermined radius of curvature, but may be formed in an empty bowl shape.

Preferably, the vertical blocking portion is fixedly connected to two legs extending from a lower end of the second reflecting portion.

Preferably, the vertical blocking portion is connected to the lower portion of the first reflecting portion, and the vertical blocking portion and the first reflecting portion may be coupled in the form of a groove / projection.

Preferably, a plurality of curved grooves having a plurality of curvature radii in a horizontal and / or vertical direction are formed side by side in a reflecting surface reflecting light at the first and second reflecting portions, And the asymmetric pattern can be formed by forming the vertical section and the horizontal section of each surface differently.

Preferably, a plurality of curved grooves having a plurality of curvature radii in a horizontal and / or vertical direction are formed side by side in a reflecting surface reflecting light at the first and second reflecting portions, And a vertical cross section and a horizontal cross section of each surface are formed to be the same to form a symmetrical pattern.

Preferably, the LED module includes a combination of three LEDs of red, green, and blue, and each LED may be configured to have a triangular shape that forms apexes.

Preferably, the LED module and the reflector are formed as a pair to form a plurality of pairs, and between each pair of adjacent second reflecting portions, a boundary portion in which at least a pair of frames are overlapped is formed, and the boundary portion is concave .

Preferably, a sensor for sensing a distance from the LED module to a light irradiation object, and a light control unit for varying the light output intensity of the LED module according to the distance sensed by the sensor, As shown in FIG.

In the present invention, the light in the vertical direction in the light generated in the LED module is blocked by the vertical blocking portion, and the side light irradiated to the side surface at a certain angle is reflected by the inner reflection surface So that the light is irradiated forward without a leakage of the light irradiated from the LED module.

By this, bright light spot caused by vertical light generated from the LED module is removed, and the focus area is formed at a constant distance. By overlapping the illuminated light through the dual reflection structure, the convergence and straightness It is possible to improve the light efficiency, to increase the uniformity of the illumination light pattern, and to reduce the color separation phenomenon.

For example, when it is used for skin treatment, peripheral ghosts other than the treatment area (pattern) are removed to prevent the glare of the operator, as well as to increase the light output and shorten the treatment time and increase the efficiency.

Also, since the intensity of the LED light source can be controlled by varying the pattern size according to the irradiation distance, the same amount of light can be maintained, so various treatments can be performed according to the operation range. As a result, it is possible to solve the problem that the light output is lowered when the distance is long, and it is possible to treat various areas of the skin. In addition, since it is possible to perform overlap treatment through a plurality of modules, .

FIG. 1 is a perspective view showing an illumination lamp using a conventional LED disclosed in a Korean Utility Model '20 -0413523'
FIG. 2 is an exploded perspective view showing the illumination lamp shown in FIG. 1,
Fig. 3 is a sectional view partially showing the illumination lamp shown in Fig. 1,
4A and 4B are a transparent perspective view and a transparent top view showing an optical transmitter module for skin treatment according to a preferred embodiment of the present invention,
5 is a view illustrating a structure of a reflector in a light source module for skin treatment according to a preferred embodiment of the present invention,
FIG. 6 is a schematic view showing various examples of the pattern shape of the inner surface of the reflector in the light source module for skin treatment according to the preferred embodiment of the present invention,
FIG. 7 is a cross-sectional view showing a symmetrical pattern reflecting surface structure and an asymmetrical pattern reflecting surface structure in a pattern shape of an inner side surface of a reflector in the light source module for skin treatment according to a preferred embodiment of the present invention,
FIG. 8 is a view illustrating a pattern size and a light output control method for each distance in the light source module for skin treatment according to a preferred embodiment of the present invention, FIG.
9 is a view illustrating a module structure in which a plurality of light source modules for skin treatment according to a preferred embodiment of the present invention are combined,
FIG. 10 is a schematic view showing an example of a case where two light source modules for skin treatment according to the present invention are combined in FIG. 9, and the concentration of light output and the improvement of light uniformity through the dual reflecting part and the vertical blocking part.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. In addition, like reference numerals designate like elements throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

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

FIGS. 4A and 4B are perspective views of a light source module 100 for skin treatment according to a preferred embodiment of the present invention. FIG. 5 is a view showing a structure of a reflector 160 of a light source module 100 for skin treatment according to a preferred embodiment of the present invention.

As shown in the figure, the light source module 100 for skin treatment according to the present invention includes a LED module 110 having a combination of three LEDs, and a bowl- And a reflector 160 formed of a reflector 160. The LED module 110 may include a single reflector 160 and a combination of three red LEDs, a blue LED, and a green LED.

In more detail, the LED module 110 is formed of a combination of red, green, and blue LEDs, and each LED is formed to have a triangular shape to form apexes to secure uniformity of light emitted from the LEDs, Light efficiency can be improved. Here, three LED combinations are exemplified, but the present invention is not limited thereto, and three LEDs of red, green, and blue must be included, and any one of the three-color LEDs may be further added to form a combination of three or more LEDs And the plurality of LEDs may be configured in a shape having a symmetrical structure at the center with a square or the like to ensure uniformity of light.

The reflector 160 includes a main reflector 120 that reflects light generated by the LED module 110 and a vertical blocking structure 150 that blocks vertical light generated from the LED module do. At this time, in the present invention, the reflector 160 forms a sub reflector 130 not only in the main reflector 120 but also in the vertical cut-off structure 150 formed at the center, and has a dual reflector structure. That is, the first reflecting portion 130 formed at the center portion and the second reflecting portion 120 formed at the peripheral portion surrounding the center portion may be formed in a double layer. The vertical blocking part 140 is formed at a predetermined distance from the upper part of the LED module 110 and is formed at the bottom center of the first reflecting part 130 and the second reflecting part 120, The LED module 110 may be positioned at the bottom center of the first and second reflectors 130 and 120.

The first and second reflectors 130 and 120 may be concentrically formed around the LED module 110 and may have a predetermined radius of curvature and an empty bottom.

The first and second reflectors 130 and 120 are formed of a reflector coated with a reflective material in the form of a concave bowl having an open bottom, And the side surfaces of the portion 120 may be disposed parallel to each other with a predetermined distance therebetween.

The inner surfaces of the reflectors, that is, the first and second reflectors 130 and 120, are preferably formed in a horizontal and / or vertical direction along curved grooves (not shown) having a plurality of curvature radii. This is because when the side light generated by the LED module 110 is reflected by the reflector, the reflection surfaces smoothly become uniform, and the probability that a shadow appears due to the vertical light blocking due to the vertical blocking portion 140 is increased This is because it is preferable to form a plurality of reflection surfaces so that the tilt angle of the reflection surface may be slightly different.

As described above, the bowl-shaped first and second reflectors 130 and 120, which are open at the bottom of the reflector 160, are formed in a concentric manner around the LED module 110 in a dual manner, The vertical blocking portion 140 blocking the vertical light generated by the LED module 110 located at the second reflective portion 120 is connected to the lower portion of the second reflective portion 120 by two legs to form a '

The vertical cut-off part 140 may be connected to two legs 170a and 170b extending from the lower end of the second reflecting part 120 to be fixedly supported.

The vertical cut-off part 140 is connected to the lower part of the first reflecting part 130. The lower ends of the vertical cut-off part 140 and the first reflecting part 130 are connected to a groove / And the first reflecting part 130 may be fixedly supported by the vertical blocking part 140. The first reflecting part 130 may be fixed and supported by the vertical blocking part 140. [

In this way, the bright point generated in the vertical light of the light source of the LED module 110 is removed through the vertical blocking unit 140.

The dual reflecting part connected to the vertical blocking part 140 may reflect the side light to the first reflecting part 130 at the central part and the second reflecting part 130 surrounding the first reflecting part 130, A light source module having a double structure that reflects side light through the light source unit 311 and improves convergence and straightness in the irradiation direction of the LED module 110 light source, to provide. That is, the light in the vertical direction of the light generated by the LED module 110 is blocked by the vertical cut-off portion 140 through the reflector 160, and the side light irradiated to the side surface at a certain angle is reflected by the first reflection And is reflected by the reflector that is the inner surface of the dual reflector of the first reflector 130 and the second reflector 120 so that the light is forwardly emitted without leakage of the light emitted from the LED module. By this, it is possible to eliminate the ambient light other than the treatment area (pattern), to prevent the operator's glare, and to increase the light output by 30% or more than that of the single reflection structure.

6 is a schematic view showing various examples of the pattern shape of the inner surface of the main reflector, that is, the second reflector 120 in the light source module for skin treatment according to the preferred embodiment of the present invention.

6, the reflector, which is the inner surface of the second reflector 120 that reflects the light generated from the LED module 110 in the light source module 100 for skin treatment according to the present invention, The curved grooves having radii are formed in parallel in the vertical direction (FIG. 6A) or in the horizontal direction (FIG. 6B), or in the horizontal and vertical directions ), And may be formed in a concentric circular direction and intersect one time in the horizontal and vertical directions (Fig. 6 (d)).

6 (a) to 6 (d), it is possible to form a pattern of various shapes as well as the inner surface of the second reflecting portion 120 as well as the inner surface of the first reflecting portion 130 have.

6 (a) to 6 (c) illustrate a structure capable of implementing an asymmetric pattern, and FIG. 6 (d) illustrates a pattern structure of a reflector suitable for implementing a symmetric pattern.

When the curved grooves are formed in various patterns, the reflection surfaces form reflection surfaces having different tilting angles, thereby further increasing the dispersion effect of the reflected light of the LED 200, thereby increasing the uniformity of the pattern and reducing the color separation phenomenon .

That is, when the inner side is formed smoothly, the illumination light is irradiated to the illumination area uniformly according to the angle of the side light irradiated by the LED module 110, so that the illumination light pattern of the illumination area is focused at the center by the vertical interception part 140 The shape of the formed circular shadow is formed, and the possibility that the donut-shaped illumination light is formed becomes higher, the uniformity of the pattern is lowered and the color separation phenomenon occurs.

Accordingly, in order to form a plurality of reflection surfaces having different reflection angles with respect to the reflector, which is the inner surface of the second reflector 120 and / or the first reflector 120, curved grooves having a plurality of curvature counter- And / or in the vertical direction, the effect of dispersing the reflected light is enhanced, shadows are removed at the center, the uniformity of the illumination light pattern is high, and the effect of reducing the color separation phenomenon can be obtained.

FIG. 7 is a view showing a symmetrical pattern reflecting surface structure and an asymmetrical pattern reflecting surface structure in a pattern shape of an inner side surface of a reflector in the light source module for skin treatment according to a preferred embodiment of the present invention.

As shown in FIG. 7, it may be configured as a multi facet type to implement symmetric and asymmetric patterns.

First, as shown in FIG. 7A, a plurality of curved grooves having a plurality of curvature radii in the horizontal and / or vertical directions are formed side by side in the reflective surface reflecting light at the first and / or second reflective portions, It is possible to form a symmetric pattern by forming the reflective surface with a plurality of surfaces and forming the vertical and horizontal sections of each surface to be the same.

7B, a plurality of curved grooves having a plurality of curvature radii in the horizontal and / or vertical directions are formed side by side in the reflective surface for reflecting light in the first and / or second reflective portions, The asymmetric pattern can be formed by differently forming the vertical section and the horizontal section of each surface.

FIG. 8 is a diagram illustrating a pattern size and a light output control method for each distance in the light source module for skin treatment according to a preferred embodiment of the present invention.

As shown in Fig. 8, since the pattern size varies depending on the focal distance as the distance from the LED light source to the treatment region, it is necessary to maintain the light uniformity.

Accordingly, in order to maintain the same light amount, the light source module 100 for skin treatment according to the present invention includes an optical output control module for maintaining the same light amount by a method of varying the LED output current for each distance in the LED module 110 . The light output control module may be arranged in the form of a microprocessor chip or the like in the LED module 110.

The light output control module includes a sensor for sensing a distance from the LED module 11 to a light irradiation object (treatment area), and a light output intensity control module for varying the light output intensity of the LED module according to the distance sensed through the sensor And a light control unit for maintaining the same light amount.

Table 1 is a table showing the pattern size and optical power intensity variable designing method for each distance detected by the sensor.

Pattern size  10cm 20cm 30cm Survey distance  30cm 50cm 70cm LED Output Current (If) 150mA 300mA 500mA

Referring to Table 1, a predetermined threshold current is set according to the detection distance through the distance detection sensor, so that the current can be varied for each distance, thereby maintaining the same light amount.

For example, when the focal length (irradiation distance) is 30 cm, the LED output current intensity is set to 150 mA when the pattern size is 10 cm, and when the pattern size is 20 cm when the focal distance (irradiation distance) Is set to 300 mA and the pattern size is 30 cm when the focal distance (irradiation distance) is 70 cm, the intensity of the LED output current can be set to 500 mA.

 Therefore, various treatments according to the range of treatment are possible. In other words, there is a problem that the light output is lowered when the distance is long since the proximity inspection can be performed only in the conventional case. However, as in the present invention, since the same amount of light can be maintained by varying the pattern size according to the irradiation distance, Is possible. For example, it is possible to treat various areas of the skin and it is possible to perform superimposition inspection through a plurality of modularization, so that a decrease in light output can be prevented.

9 is a view showing a module structure in which a plurality of light irradiator light source modules for skin treatment according to a preferred embodiment of the present invention are connected.

The light source module 100 for skin treatment according to the present invention comprises a reflector 160 formed of a single module in the form of a dual reflective structure on top of an LED module 110 in which three LEDs are combined, The LED module 110 may be composed of one reflector 160 and three LED modules 110 including a red LED, a blue LED, and a green LED.

9, the light source module body 200 according to the present invention includes a pair of the LED module and the reflector so that four pairs of the light source modules 100a, 100b, 100c, And shows a modular combination structure.

In addition, each of the light source modules 100a, 100b, 100c, and 100d may be coupled to the upper portion of the substrate of the light source module 200 to be united.

FIG. 10 is a schematic view showing an example of a case where two light source modules for skin treatment according to the present invention are combined in FIG. 9, and the concentration of light output and the improvement of light uniformity through the dual reflection part and the vertical isolation part.

As shown in FIG. 10, the LED module and the reflector are formed as a pair, and two pairs of the light source modules 100a and 100b are connected on the substrate 210 to form an example of a combined structure.

At this time, the vertical cut-off portions 140a and 140b formed above the respective LED modules 110a and 110b may have a disk shape (FIG. 10A) or a hemispherical shape (FIG. 10B) have.

In addition, a boundary portion 220 in which at least a pair of rim portions overlap each other is formed between each pair of adjacent second reflection portions, and the boundary portion 220 may have a concave shape. That is, the second reflection part 120 preferably has a structure in which a pair of reflection parts 120a or 120b with the boundary part 220 formed adjacent to each other are arranged side by side in the horizontal direction, and the boundary part 220 has a concave shape. The boundary between the two reflectors 120a and 120b is lowered so that the light of each LED module 110a and 110b is overlapped with each illumination area to increase the uniformity of the pattern and reduce the color separation phenomenon.

In the case where the two light sources are adjacent to each other, the reflector 120 partially overlaps each other to form an illumination pattern formed by a pair of light source modules having a boundary portion. And a light efficiency improvement of 30% or more can be expected over a single reflection structure.

The LED module 110a or 110b may be connected to the LED module 110a or 110b through two 'a' shaped legs 170a or 170b connected to the opened lower edge of the second reflecting portion 120a or 120b, as shown in FIG. 10 (a) A vertical discontinuous portion 140a or 140b is formed on the upper portion of the LED module 110a or 110b to block the vertical light generated from the LED module 110a or 110b, The bright spot of the center is removed. In addition, the formation of the shadow due to the removal of the bright light spot can be achieved by allowing the side light to be fused to each other in the focal length range by the reflectors of the first and second reflectors 130a or 130b (120a or 120b) .

The LED module 110a or 110b may be connected to the LED module 110a or 110b through two legs 170a or 170b of 'a' shape connected to the open bottom edge of the second reflecting portion 120a or 120b, as shown in FIG. 10 (b) The vertical blocking portion 140a or 140b having a downwardly convex hemispherical shape positioned at the upper portion is formed to reflect the vertical light generated from the LED module 110a or 110b to the side through the convex surface coated with the reflective material , And is irradiated forward by the reflector on the side surface again.

The embodiment shown in FIG. 10 (b) differs from the embodiment shown in FIG. 10 (a) in that the vertical blocking portion 140a or 140b originally blocks the vertical light generated in the LED module 110a or 110b The LED module 110a or 120b may be formed by reflecting a light beam reflected by the inner surface of the first and second reflecting portions 130a or 130b (120a or 120b) through a convex reflecting surface, The light reflected by the vertical light of the LED module 110a or 110b can be used as a light source as well as the reflected light L reflected and irradiated through the side light of the LED module 110b. An effect of raising the illuminance can be obtained.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100, 100a, 100b, 100c, 100d: light source module for skin treatment
110: LED module
120: main reflecting portion (second reflecting portion)
130: sub-reflecting portion (first reflecting portion)
140: Vertical block
160: Reflector

Claims (9)

An LED module comprising a combination of a plurality of LEDs; And
A dual reflector for reflecting light generated by the LED module, the dual reflector including a first reflector formed at a center portion and a second reflector formed at a peripheral portion surrounding the center portion,
A second reflector formed at a bottom center of the first reflector and the second reflector and connected at a lower portion of the first reflector to cut off vertical light generated from the LED module; The vertical cut-
And a reflector,
And the LED module is located at the bottom center of the first and second reflectors.
The method according to claim 1,
Wherein the first and second reflecting portions are formed on the first substrate,
The LED module having a concentric circle centering on the LED module and having a predetermined radius of curvature,
Wherein the light source module is formed in a shape of an empty bottom.
The method according to claim 1,
Wherein the vertical blocking unit is fixedly connected to two legs extending from a lower end of the second reflecting unit.
The method according to claim 1,
Wherein the vertical blocking portion is connected to the lower portion of the first reflecting portion, wherein the vertical blocking portion and the first reflecting portion are coupled in the form of grooves / protrusions.
The method according to claim 1,
Wherein a plurality of curved grooves having a plurality of curvature radii in a horizontal and / or vertical direction are formed side by side in a reflective surface for reflecting light in the first and second reflective portions, the reflective surface is composed of a plurality of surfaces, Wherein the asymmetric pattern is formed by differently forming the vertical section and the horizontal section of the light source module.
The method according to claim 1,
Wherein a plurality of curved grooves having a plurality of curvature radii in a horizontal and / or vertical direction are formed side by side in a reflective surface for reflecting light in the first and second reflective portions, the reflective surface is composed of a plurality of surfaces, Wherein a vertical cross section and a horizontal cross section of the light source module are formed in the same shape to form a symmetrical pattern.
The method according to claim 1,
Wherein the LED module comprises a combination of three LEDs of red, green, and blue, and each LED has a triangular shape that forms a vertex.
The method according to claim 1,
Wherein the LED module and the reflector are formed as a pair to form a plurality of pairs,
Wherein a boundary portion between at least a pair of adjacent rim portions of each pair of adjacent second reflecting portions is formed, and the boundary portion is concave.
The method according to claim 1,
A sensor for sensing a distance from the LED module to the light irradiation object,
Further comprising a control module configured to vary the light output intensity of the LED module according to a distance sensed by the sensor and maintain the same light amount.

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