KR102677157B1 - Light reflection structure having a reflection hole for angle control of light - Google Patents

Abstract

The present invention relates to a light reflecting structure having a reflecting hole structure for controlling the angle of light emission, and specifically, a plate having a plurality of receiving spaces formed through its lower surface to accommodate the upper surface of an LED package; and a first circular open cross-section that protrudes from the upper surface of the receiving space formed in the plate and is formed on a side adjacent to the upper surface of the LED package accommodated in the plate, and is spaced apart from the LED package by a preset distance. A reflection hole including a second circular open cross-section and a pillar-shaped reflector interconnecting the circumferences of the first circular open cross-section and the second circular open cross-section; wherein the reflection hole is configured to emit light from the LED package. The centers of the first circular open cross-section and the centers of the second circular open cross-sections are arranged alternately to have a light distribution angle of 10 to 30 degrees upward and 60 to 80 degrees downward relative to the central axis of light, so that the first circular open cross-section and the The line connecting the center of the second circular open cross-section is characterized in that it has a slope.

Description

Light reflection structure having a reflection hole structure for controlling the angle of light emission {LIGHT REFLECTION STRUCTURE HAVING A REFLECTION HOLE FOR ANGLE CONTROL OF LIGHT}

The present invention is a technology for implementing a reflective structure installed in the LED array of an LED display board to control the angle of light emitted from the LED package. Specifically, the present invention is a technology for implementing a reflective structure to control the angle of light emitted from the LED package, specifically to prevent light pollution and save power. A light reflection structure that implements an asymmetrically structured reflection hole to control the angle of light, but can be installed integrally in the LED array so that the asymmetrically structured reflection hole is applied to each of the multiple LED packages arranged in the LED array. It's about.

LED (light-emitting diode) is a light-emitting device that converts electrical energy into light energy. An LED chip is generally mounted on an LED array corresponding to a substrate or lead frame, and the top of the chip is covered with a dome-shaped lens, etc. A light emitting device package is used. Accordingly, the chip can be protected from contaminants or impacts, and light extraction efficiency can be improved by minimizing the forward radiation of light by the lens.

The light distribution area of the light generated from this general LED package is implemented as an omni-directional light distribution area of about 120 degrees, and there is a problem that the beam angle is too wide. In particular, images, etc. are transmitted through an LED array with multiple LED packages installed. In LED display boards, VMS (road signage), etc., excessively bright light is irradiated to unwanted areas, causing so-called light pollution. In particular, such light pollution occurs severely in densely populated areas such as buildings where many electronic signboards are installed. At the same time, there is a problem that a lot of power consumption is inevitable in order to obtain the desired luminance due to such a wide beam angle.

Accordingly, technologies are being developed to concentrate light into a certain light distribution area through various methods of controlling the LED light distribution area, prevent light pollution, and save power to obtain the same luminance. In particular, this technology requires an asymmetric tilting technology to focus the light distribution area downward.

As such technology, for example, in Korean Patent Application No. 10-2019-0069337, etc., it is a technology related to a lens for controlling light in a specific direction, and is symmetrical through a reflective structure installed adjacent to a light emitting device chip or package. A technology to implement asymmetric tilting of the light distribution area is presented.

However, these technologies can be applied to a single LED package, so in order to apply them to an electronic sign or VMS that includes an LED array with multiple LED packages installed, each reflective structure must be installed one by one, which raises the issue of extreme reduction in efficiency in manufacturing.

The present invention was created to solve the above problems, and its purpose is to provide a light reflection structure having an asymmetric reflection hole for controlling the angle of light emitted from an LED package.

In addition, the present invention allows the LED package to be installed integrally in the LED array so that each of the plurality of LED packages arranged in the LED array has an asymmetrical reflection hole, thereby significantly increasing manufacturing efficiency and reducing cost and manufacturing time. There are different purposes to providing technology.

In order to achieve the above object, a light reflection structure having a reflection hole structure for controlling the light emission angle according to an embodiment of the present invention includes: a plate through which a plurality of receiving spaces are formed on the lower surface to accommodate the upper surface of the LED package; and a first circular open cross-section that protrudes from the upper surface of the receiving space formed in the plate and is formed on a side adjacent to the upper surface of the LED package accommodated in the plate, and is spaced apart from the LED package by a preset distance. A reflection hole including a second circular open cross-section and a pillar-shaped reflector interconnecting the circumferences of the first circular open cross-section and the second circular open cross-section; wherein the reflection hole is configured to emit light from the LED package. The centers of the first circular open cross-section and the centers of the second circular open cross-sections are arranged alternately to have a light distribution angle of 10 to 30 degrees upward and 60 to 80 degrees downward relative to the central axis of light, so that the first circular open cross-section and the The line connecting the center of the second circular open cross-section is characterized in that it has a slope.

The first circular open cross-section is preferably formed as a circle with a diameter equal to the length of the cross-section of the receiving space formed in the plate.

The second circular open cross-section has a distance and diameter separated from the first circular open cross-section according to the upward and downward light distribution angles within the range of the light distribution angle for controlling the light emission angle of the light emitted from the LED package. It is desirable to control it.

It is preferable that the height of the column-shaped reflector connecting the first circular open cross section and the second circular open cross section is adjusted according to the distance at which the second circular open cross section is separated from the first circular open cross section.

It is preferable that the slope of the line connecting the centers of the first circular open cross section and the second circular open cross section increases as the angle of the light distribution angle increases.

The reflector is preferably formed in the shape of a hollow pillar with an asymmetric structure based on a line connecting the centers of the first circular open cross-section and the second circular open cross-section.

The reflection hole is formed at a position corresponding to the position of the LED package accommodated in the plate in order to asymmetrically tilt the light distribution area of the light emitted from the LED package in one direction, and is preset from the upper surface of the plate. It is desirable to protrude and extend in height to reflect and distribute light.

The plate further includes a through hole formed in an area excluding the receiving space in which the LED package is accommodated, and in which a thread is formed along the inner peripheral surface, wherein the LED package is arranged by inserting a fixing means into the through hole. It is preferred to be coupled to an array.

It is preferable that a plurality of through holes are formed radially around the central axis of the plate.

The light reflection structure having a reflection hole structure for controlling the emission angle according to the present invention provides a light reflection structure having an asymmetric reflection hole structure for controlling the emission angle of light emitted from an LED package to prevent light pollution. There is an effect of saving power compared to the same luminance by controlling the angle of light emission.

In addition, according to an embodiment of the present invention, a light reflection structure with a plurality of reflection holes is manufactured so that it can be installed integrally in the LED array so that the reflection holes of an asymmetric structure are applied to each of the plurality of LED packages arranged in the LED array. It has the effect of greatly increasing phase efficiency and reducing cost and manufacturing time.

1 is a perspective view of a light reflective structure having a reflective hole structure for controlling the light emission angle according to an embodiment of the present invention.
Figure 2 is a bottom view of a light reflection structure having a reflection hole structure for controlling the light emission angle according to an embodiment of the present invention.
Figure 3 is a plan view of a light reflection structure having a reflection hole structure for controlling the light emission angle according to an embodiment of the present invention.
Figure 4 is a side view and a side cross-sectional view of a light reflection structure having a reflection hole structure for controlling the light emission angle according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating the inclination of a reflection hole and the formation form of the second circular open cross-section according to an embodiment of the present invention.
Figure 6 is a diagram showing the light distribution curve for a conventional LED package.
Figure 7 is a diagram showing a light distribution curve for an LED package applying a light reflection structure according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that this aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain example aspects of one or more aspects. However, these aspects are illustrative and some of the various methods in the principles of the various aspects may be utilized, and the written description is intended to encompass all such aspects and their equivalents.

As used herein, “embodiment,” “example,” “aspect,” “example,” etc. may not be construed to mean that any aspect or design described is better or advantageous than other aspects or designs. .

Additionally, the terms “comprise” and/or “comprising” mean that the feature and/or element is present, but exclude the presence or addition of one or more other features, elements and/or groups thereof. It should be understood as not doing so.

Additionally, terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. It has the same meaning. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

The present invention is a technology for implementing a reflective structure installed in the LED array of an LED signboard to control the emission angle of light emitted from an LED package, and specifically for controlling the emission angle of light emitted from an LED package. It provides a light reflecting structure having an asymmetrically structured reflection hole, and allows it to be installed integrally in the LED array so that the asymmetrically structured reflecting hole is applied to each of a plurality of LED packages arranged in the LED array, thereby significantly increasing manufacturing efficiency. The purpose is to provide technology that can reduce cost and manufacturing time.

For a more detailed description, the present invention will be described below with reference to the accompanying drawings, and multiple drawings may be referred to simultaneously to explain one technical feature and the components constituting the invention.

Meanwhile, in the following description, some of the elements depicted in the drawings are omitted or excessively enlarged or reduced in order to explain the function of each element of the present invention, but the relevant drawings do not explain the technical features and rights of the present invention. It would be natural to understand that the scope is not limited.

Additionally, in the following description, multiple drawings will be simultaneously referred to and described in order to explain components constituting one technical feature or invention.

Looking schematically at the drawings attached as a description of the present invention, Figure 1 shows a perspective view of a light reflection structure having a reflection hole structure for controlling the light emission angle, and Figure 2 shows a perspective view of a light reflection structure having a reflection hole structure for controlling the light emission angle. A bottom view of the light reflection structure is shown, and Figure 3 is a top view of the light reflection structure having a reflection hole structure for controlling the light emission angle, and Figure 4 is a side view of the light reflection structure having a reflection hole structure for controlling the light emission angle, and A side cross-sectional view is shown. In addition, Figure 5 shows a diagram for explaining the inclination of the reflection hole and the formation form of the second circular open cross-section according to an embodiment of the present invention.

First, referring to Figure 1, which shows a perspective view of a light reflection structure having a reflection hole structure for controlling the light emission angle according to an embodiment of the present invention, the light having a reflection hole structure for controlling the light emission angle in the present invention is shown. The reflective structure (hereinafter referred to as 'light reflective structure of the present invention') may largely include a plate 10 and a reflective hole 20.

The light reflection structure of the present invention can be installed in an LED array in which a plurality of LED packages are arranged, and can perform the function of controlling the light distribution area of the light emitted from the LED package to be tilted asymmetrically downward.

Meanwhile, the LED package in the present invention is self-inserted into an LED array, and performs the function of emitting light by receiving power through a power supply line configured in the LED array. At this time, the LED package includes an LED chip and a wide 120-degree forward angle. It can be understood that a general LED package product that includes a symmetrical lens to have a light distribution area is included.

As shown in FIG. 2, the plate 10 has a plurality of receiving spaces 11 formed through its lower surface to accommodate the upper surface of the LED package as described above, and reflection holes, which will be described later, are formed protruding from the upper surface. It can be understood as serving as a base.

Meanwhile, as shown in FIGS. 1 and 3, the reflection hole 20 is formed to protrude from the upper surface of the receiving space 11 formed in the plate 10, and is formed to protrude from the LED package accommodated in the plate 10. A first circular open cross-section 21 formed on a side adjacent to the upper surface, a second circular open cross-section 22 formed at a preset distance from the LED package, and a first circular open cross-section 21 and a second circular open cross-section It may include a pillar-shaped reflector 23 that interconnects the circumference of the cross-section 22.

In other words, the reflection hole 20 having the above-described configuration is located at a position corresponding to the position of the LED package accommodated in the plate 10 in order to asymmetrically tilt the light distribution area of the light emitted from the LED package in one direction. It can be understood as being formed to protrude and extend from the upper surface of the plate 10 to a preset height to reflect and distribute light.

At this time, as shown in FIG. 5, the reflection hole 30 extends upward by 10 degrees relative to the central axis C ₁ of the light emitted from the LED package 1 inserted into the receiving space 11 of the plate 10. The center (C ₂₁ ) of the first circular open cross-section 21 and the center (C ₂₂ ) of the second circular open cross-section 22 have a light distribution angle of 30 to 30 degrees (θ ₁ ) and downward 60 to 80 degrees (θ ₂ ). ) are arranged alternately so that a line (C _21- C ₂₂ ) connecting the center (C ₂₁ ) of the first circular open cross-section 21 and the center (C ₂₂ ) of the second circular open cross-section 22 emits light from the LED package. It may have a constant angle of inclination (θ ₃ ) based on the central axis of light (C ₁ ).

That is, in order to control the angle of light emitted from the LED package 1 and implement an asymmetric light distribution area, a first circular open cross-section 21 on the bottom of the reflection hole 20 and a second circular open cross-section on the upper surface ( The line connecting the centers of 22) (C ₂₁ - C ₂₂ ) is not perpendicular to the plane of the plate 10, but is formed to be inclined toward the direction of the light to be controlled, that is, to have an asymmetric angle (θ ₃ ). It can be understood.

In other words, the inclination (asymmetry angle) in the present invention can be understood as the light emission angle for tilting the light emitted from the LED package 1 asymmetrically in one direction.

Meanwhile, the first circular open cross-section 21 may be formed in a circular shape with a diameter equal to the length of the cross-section of the receiving space 11 formed in the plate 10.

At this time, as an embodiment of the present invention, the length of the cross section of the receiving space 11 may be changed depending on the size of the LED package accommodated in the plate 10, and most preferably, the receiving space 11 of the plate 10 ) It would be desirable to have the same shape as the upper area of the LED package inserted into the LED package and to form it with precision processing so that the light emitted from the LED package does not escape through the gap.

Meanwhile, the second circular open cross-section 22 is the first circular opening according to the angles of the upward light distribution angle (θ ₁ ) and the downward light distribution angle (θ ₂ ) within the light distribution angle range for controlling the light emission angle of the light emitted from the LED package. The distance away from the cross section 21 and the length of the diameter can be adjusted.

Specifically, referring to FIG. 5, as the upward light distribution angle (θ ₁ ) and downward light distribution angle (θ ₂ ) increase based on the central axis (C ₁ ) of the light emitted from the LED package 1, the second circular shape increases. The length of the diameter of the open cross-section 22 increases, and as the sizes of the upward light distribution angle (θ ₁ ) and the downward light distribution angle (θ ₂ ) decrease, the length of the diameter of the second circular open cross-section 22 decreases. It can be understood that

Therefore, as described above, the length of the diameter of the second circular open cross-section 22 is adjustable depending on the size of the upward light distribution angle (θ ₁ ) and the downward light distribution angle (θ ₂ ), and the length of the diameter of the second circular open cross-section 22 is adjustable. It can be understood that the distance between the second circular open cross section 22 and the first circular open cross section 21 can be adjusted depending on the length of the diameter.

Meanwhile, according to the distance at which the second circular open cross-section 22 is separated from the first circular open cross-section 21, a pillar-shaped structure connecting the first circular open cross-section 21 and the second circular open cross-section 22 is formed. The height of the reflector 23 can be adjusted.

That is, it can be understood that the height of the reflector 23 increases as the second circular open cross-section 22 is further away from the first circular open cross-section 21.

Meanwhile, the inclination (θ ₃ ) of the line (C ₂₁ - C ₂₂ ) connecting the centers of the first circular open cross section 21 and the second circular open cross section 22 is the above-mentioned light distribution angles (θ _1, θ ₂ ) can increase as the angle increases.

Specifically, as shown in FIG. 5, the diameter of the second circular open cross-section 22 spaced apart from the first circular open cross-section 21 by a preset distance increases as the size of the light distribution angle (θ _1, θ ₂ ) increases. It increases as time increases, and accordingly, the slope (θ) of the line (C _21- C 22 ) connecting the center (C ₂₁ ) of the first circular open cross-section 21 and the center (C ₂₂ ) of the second circular open cross-section _{22 3} ) can be understood to increase.

Meanwhile, the reflector 23 is formed in the shape of a hollow pillar with an asymmetric structure based on the line (C _{21 -} C ₂₂ ) connecting the centers of the first circular open cross section 21 and the second circular open cross section 22. It can be.

Specifically, referring to FIGS. 4(B) and 5 simultaneously, due to the second circular open cross-section 22 arranged to be crossed with the first circular open cross-section 21, the center of the first circular open cross-section 21 The line (C ₂₁ - C ₂₂ ) connecting (C ₂₁ ) and the center (C ₂₂ ) of the second circular open cross section 22 has a constant slope (θ ₃ ), and the center of the first circular open cross section 21 A hollow pillar is formed based on a line (C _{21 - C 22 ) connecting (C 21 )} and the center (C ₂₂ ) of the second circular open cross section ₂₂ , and 2 It can be understood that a hollow pillar is formed whose cross-section size gradually increases in the direction of the circular open cross-section 22, and accordingly, the first circular open cross-section 21 and the second circular open cross-section 21 are formed. It can be understood that the reflector 23 is formed in the shape of a hollow pillar with an asymmetric structure based on the line (C _{21 -} C ₂₂ ) connecting the centers of (22).

Meanwhile, a reflective layer may be formed along the inner surface of the reflector 23 having an asymmetric hollow pillar shape, and the light emitted from the LED package 1 is reflected through the reflective layer of the asymmetric structure, thereby causing the LED package 1 ) It is preferable to understand that the angle of light emitted from is controlled.

Meanwhile, as another embodiment of the present invention, the inner surface of the reflector 23 of the reflection hole 20 may have a certain roughness or may be configured to have no roughness, but the present invention is not limited thereto.

In addition, as an embodiment of the present invention, as shown in FIG. 4, a structural layer of a preset thickness may be formed along the outer surface of the reflector 23, and the structural layer may be formed by forming an asymmetric reflector 23. It can be understood as being formed along the outer surface of the above-described reflector 23 in order to stably form it on the plate 10, and in this case, the above-described structural layer is an LED inserted into the receiving space 11 of the plate 10. In order to improve the durability of the LED package by dissipating the heat generated when the package emits light, it is possible to use heat dissipating materials such as metal and ceramic. In addition, it is possible to emit heat generated when the LED package emits light or to improve the durability of the LED package. It is possible to use any material that can stably realize the shape of the reflective hole 20 having the structure, and the present invention is not limited thereto.

Therefore, the reflection hole 20 having the above-described configuration is tilted upward with respect to the central axis (C ₁ ) of the light emitted from the LED package in order to asymmetrically tilt the light distribution area of the light emitted from the LED package in one direction. When the light distribution angle (θ ₁ ) and the downward light distribution angle (θ ₂ ) are set, the size of the second circular open cross-section 22 and the second light distribution angle 22 are determined according to the sizes of the upward light distribution angle (θ ₁ ) and the downward light distribution angle (θ ₂ ). It is possible to set the distance at which the circular open cross-section 22 is separated from the first circular open cross-section 21, and as the inclination θ ₃ of the reflection hole 20 is set accordingly, the light emitted from the LED package It can be understood that the shape of the reflection hole 20 capable of asymmetric tilting by controlling the angle is formed.

In addition, it can be understood that the plurality of reflection holes are formed in a grid structure on the plate to correspond to the arrangement of the LED packages arranged in an M x N grid structure in the LED array.

Accordingly, the light reflection structure with a plurality of reflection holes can be installed integrally in the LED array so that each of the plurality of LED packages arranged in the LED array has an asymmetric reflection hole, thereby significantly increasing manufacturing efficiency and reducing costs. and can have the effect of shortening the manufacturing time.

Meanwhile, according to the light distribution angle set by controlling the light emission angle of the light emitted from the LED package, the height of the reflection hole, the diameter of the bottom and top areas, and their ratio can be set, respectively, even for the same LED array and LED package. By implementing the light reflection structures of the present invention differently, the effect of being able to implement the desired light distribution area specifications can be expected.

Meanwhile, as an embodiment of the present invention, the above-described plate 10 may further include a through hole 12.

The through hole 12 is formed in an area excluding the receiving space where the LED package is accommodated, and may have a thread formed along the inner peripheral surface. Additionally, a plurality of through holes 12 may be formed radially around the central axis of the plate 10.

That is, as shown in FIGS. 3 and 4, in the area excluding the accommodation space 11 of the LED package formed on the plate 10 and the reflection hole 20 protruding from the upper surface of the accommodation space 11, It can be understood that a plurality of plates are formed radially around the central axis of the plate 10.

Accordingly, as described above, a fixing means can be inserted into the plurality of through holes 12 and the LED package can be fixedly coupled to the LED array in which the LED package is arranged.

At this time, although not shown in the accompanying drawings, the above-described fixing means may include means such as a bolt having a thread of a shape corresponding to the thread formed on the inner peripheral surface of the above-described through hole 12, and in addition to the plate (10) ) Any coupling method may be used as long as it can be inserted into the through hole 12 to couple the plate 10 to the LED array, and the present invention is not limited thereto.

A luminous intensity experiment was conducted on an LED package to which the light reflection structure of the embodiment of the present invention configured as described above was applied and a conventional LED package to which the light reflection structure was not applied. As a result, Table 1 and Figures 6 to 7 below and The same results were obtained.

At this time, in the experiment that obtained the results shown in Table 1 below and Figures 6 to 7, an LED package with a beam angle of 120 degrees, which is commonly used in the industry, and a reflection hole with an inclination (asymmetry angle) of 20 degrees were used in a 5 x 4 shape. A light reflection structure with a lattice structure was used, and the experiment was conducted using Pimax's light distribution measurement device.

Direction angle [deg.] Asymmetric angle [deg.] Luminance[cd] Before applying light reflecting structure 120 0 7.9 After applying the light reflection structure 55 20 12.2

In Table 1 above, the beam angle refers to the diffusion angle of light when the light intensity is 1/2, the asymmetry angle refers to the angle at which light is emitted, and the luminance refers to the brightness of the light coming from the light source.

Therefore, it can be seen that the light emitted from the LED package before applying the light reflection structure in the present invention has a beam angle of 120 degrees, a luminous intensity of 7.9 cd, and an asymmetry angle of 0 degrees, and as shown in FIG. 6, 0 degrees It can be seen that the light distribution curves are symmetrical to each other based on .

Meanwhile, it can be seen that the light emitted from the LED package to which the light reflection structure of the present invention is applied has a beam angle of 55 degrees, a luminous intensity of 12.2 cd, and an asymmetry angle of 20 degrees, and as shown in Figure 7, an asymmetry angle of 20 degrees. As a standard, it can be seen that it has an asymmetric light distribution curve.

That is, when the light reflection structure of the present invention is applied, it can be seen that the luminous intensity increases by 54.4% compared to the case without the light reflection structure, and it can be seen that the light is distributed asymmetrically with a decrease in the beam angle.

Therefore, even if the same LED package is used, when the light reflection structure of the present invention is applied, an improvement in luminous intensity of 54.4% can be expected by controlling the angle of light emission.

Meanwhile, a luminance measurement experiment was conducted on an LED signboard using the light reflection structure of the embodiment of the present invention configured as described above and an LED signboard without the light reflection structure, and as a result, the results shown in Table 2 below were obtained.

At this time, in the experiment that obtained the results in Table 2 below, as described above, an LED package with a beam angle of 120 degrees and a light reflection structure in which reflection holes with an inclination (asymmetry angle) of 20 degrees were formed in a 5 x 4 grid structure was used, and the experiment was conducted using a spectroradiometer (CS-2000) manufactured by Konica Minolta.

Luminance before applying light reflection structure [nit] Luminance after applying light reflection structure [nit] Luminance increase rate [%] 3,616 5,020 +38.8

As shown in Table 2 above, the LED display board before applying the light reflection structure has a luminance of 3,616 nits, and the LED display board to which the light reflection structure in the present invention is applied has a luminance of 5,020 nits, so the light in the present invention It can be seen that the luminance of the LED signboard using the reflective structure increases by 38.8%.

In other words, even if it is an LED signboard using the same LED package, an improvement in luminance of approximately 38.8% can be expected by applying the light reflection structure of the present invention.

In general, according to an embodiment of the present invention described above, the light reflection structure having a reflection hole structure for controlling the light emission angle according to the present invention has an asymmetrical reflection hole structure for controlling the light emission angle of the light emitted from the LED package. Light pollution can be prevented by providing a light reflection structure having a , and by controlling the emission angle of light, there is an effect of saving power compared to the same luminance.

In addition, according to an embodiment of the present invention, a light reflection structure with a plurality of reflection holes is manufactured so that it can be installed integrally in the LED array so that the reflection holes of an asymmetric structure are applied to each of the plurality of LED packages arranged in the LED array. It has the effect of greatly increasing phase efficiency and reducing cost and manufacturing time.

In the above, the light reflection structure having a reflection hole structure for controlling the light emission angle proposed in the present invention has been described. However, the spirit of the present invention is not limited to the embodiments presented herein, and the spirit of the present invention should be understood. A person skilled in the art will be able to easily suggest other embodiments by adding, changing, deleting, or adding components within the scope of the same idea, but it will be said that this is also within the scope of the present invention.

In addition, terms such as “include,” “comprise,” or “have” as used above mean that the corresponding component may be included, unless specifically stated to the contrary, and thus do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the meaning in the context of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

Claims (9)

A plate through which a plurality of receiving spaces are formed on the lower surface to accommodate the upper surface of the LED package; and
A first circular open cross-section that protrudes from the upper surface of the receiving space formed in the plate and is formed on a side adjacent to the upper surface of the LED package accommodated in the plate, and a second circular cross-section that is spaced apart from the LED package by a preset distance. A reflection hole including two circular open cross-sections and a pillar-shaped reflector interconnecting the circumferences of the first circular open cross-section and the second circular open cross-section,
The reflection hole is
In order to implement an asymmetric light distribution area by controlling the angle of light emitted from the LED package, the light distribution angle is 10 to 30 degrees upward and 60 to 80 degrees downward based on the central axis of the light emitted from the LED package. The center of the first circular open cross-section and the center of the second circular open cross-section are arranged so that the line connecting the centers of the first circular open cross-section and the second circular open cross-section is not perpendicular to the plane of the plate, and to control It is formed to have an inclination toward the direction of the light,
The reflector is,
It is formed in the shape of a hollow pillar with an asymmetric structure with respect to a line connecting the centers of the first circular open cross-section and the second circular open cross-section, and is formed in the direction from the first circular open cross-section to the second circular open cross-section. It is formed in a form where the size of the cross-section gradually increases.
In order to stably form the reflector with an asymmetric structure on the plate, a structural layer of a preset thickness is formed along the outer surface of the reflector,
The structural layer is,
Light reflection having a reflection hole structure for controlling the light emission angle, characterized in that any heat dissipation material of metal or ceramic is used to emit heat generated when the LED package inserted into the receiving space of the plate emits light. struct.
According to paragraph 1,
The first circular open cross-section is,
A light reflecting structure having a reflection hole structure for controlling the light emission angle, characterized in that it is formed in a circular shape with a diameter equal to the length of the cross section of the receiving space formed in the plate.
According to paragraph 1,
The second circular open cross-section is,
The light emission angle, characterized in that the distance and diameter separated from the first circular open cross-section are adjusted according to the upward and downward light distribution angles within the range of the light distribution angle for controlling the light emission angle of the light emitted from the LED package. A light reflective structure having a reflective hole structure for control.
According to paragraph 3,
Characterized in that the height of the pillar-shaped reflector interconnecting the first circular open cross section and the second circular open cross section is adjusted according to the distance at which the second circular open cross section is separated from the first circular open cross section. A light reflective structure having a reflective hole structure for controlling the light emission angle.
According to paragraph 1,
The slope of the line connecting the centers of the first circular open cross section and the second circular open cross section is,
A light reflective structure having a reflective hole structure for controlling the light emission angle, wherein the light distribution angle increases as the angle of the light distribution increases.
delete According to paragraph 1,
The reflection hole is
In order to asymmetrically tilt the light distribution area emitted from the LED package in one direction, it is formed at a position corresponding to the position of the LED package accommodated in the plate, and is formed to protrude and extend from the upper surface of the plate to a preset height. A light reflective structure having a reflective hole structure for controlling the angle of light emission, characterized in that it reflects and distributes light.
According to paragraph 1,
The plate is,
It further includes a through hole formed in an area excluding the receiving space in which the LED package is accommodated, and having a thread formed along the inner peripheral surface,
A light reflecting structure having a reflecting hole structure for controlling the light emission angle, characterized in that it is coupled to the LED array in which the LED package is arranged by inserting a fixing means into the through hole.
According to clause 8,
The through hole is,
A light reflecting structure having a reflection hole structure for controlling the light emission angle, characterized in that a plurality of reflection holes are formed radially around the central axis of the plate.

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