WO2018155946A1 - Light emitting module, lens, and tubular lighting apparatus comprising same - Google Patents

Light emitting module, lens, and tubular lighting apparatus comprising same Download PDF

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Publication number
WO2018155946A1
WO2018155946A1 PCT/KR2018/002238 KR2018002238W WO2018155946A1 WO 2018155946 A1 WO2018155946 A1 WO 2018155946A1 KR 2018002238 W KR2018002238 W KR 2018002238W WO 2018155946 A1 WO2018155946 A1 WO 2018155946A1
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WO
WIPO (PCT)
Prior art keywords
light
light emitting
lens
long axis
incident
Prior art date
Application number
PCT/KR2018/002238
Other languages
French (fr)
Korean (ko)
Inventor
왕유안
이도광
Original Assignee
서울반도체주식회사
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Publication of WO2018155946A1 publication Critical patent/WO2018155946A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a light emitting module, a lens and a tubular lighting apparatus including the same, and more particularly, to a light emitting module, a lens and a tubular lighting apparatus including the same that can diffuse the light emitted from the light emitting diode.
  • a light emitting diode is an inorganic semiconductor device that emits light generated through recombination of electrons and holes. Recently, light emitting diodes have been used in various fields such as display devices, vehicle lamps, and general lighting. The light emitting diode has a long lifespan, low power consumption, and fast response speed. The LEDs are rapidly replacing conventional light sources.
  • Shading and hot spots are a phenomenon in which when the plurality of light emitting diodes are spaced apart from each other, the position between the light emitting diodes is dark and the position where the light emitting diodes are arranged is bright.
  • the conventional tubular lighting device can narrow the interval of the plurality of light emitting diodes so that no shadows or hot spots occur.
  • the interval between the light emitting diodes is narrowed, there is a problem that the manufacturing cost can be increased because the number of light emitting diodes used in the tubular lighting device increases.
  • An object of the present invention is to provide a light emitting module, a lens, and a tubular lighting device for preventing shadows or hot spots even when a plurality of light emitting diodes are used in a tubular lighting device or the like, even if the distance between the light emitting diodes is widened.
  • a light emitting module a plurality of light emitting elements disposed on a substrate; A plurality of lenses respectively disposed on the plurality of light emitting devices, the plurality of lenses dispersing light emitted from the light emitting devices, and each of the plurality of lenses includes a light incident part to which light emitted from the light emitting devices is incident; And a light emitting part for emitting the light, wherein the light receiving part and the planar shape of the light exiting part have a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exiting part may be disposed to have a predetermined angle with each other. .
  • the long axis of the light incident part and the long axis of the light exit part may be disposed perpendicular to each other.
  • the lens may have a stepped portion surrounding the light incident portion.
  • the light exit portion may include a boundary portion where two convex portions and the two convex portions overlap, and the boundary portion may be concave in an arc shape in cross section.
  • the light exit portion of the lens may have a ratio of 1.5 to 3: 1 in length of the long axis and short axis.
  • the height from the substrate to the upper surface of the plurality of light emitting devices may be greater than the height from the substrate to the light incident portion of the lens.
  • the lens according to an embodiment of the present invention the light incident portion formed in the lower portion, the light emitted from the light emitting element is incident; And a light exit part for outputting light incident to the light incident part to the outside, wherein the planar shape of the light incident part and the light exit part has a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exit part are predetermined. It may be formed to have an angle of.
  • the long axis of the light incident portion and the long axis of the light exit portion may be formed perpendicular to each other.
  • the light incident portion may have a concave shape
  • the light exit portion may have a boundary portion where two convex portions and the two convex portions overlap
  • the boundary portion may be concave in an arc shape on a cross section.
  • the light exit portion may have a length of 1.5 to 3: 1 in the length of the long axis and the short axis.
  • the apparatus may further include a plurality of legs disposed around the light incident part.
  • It is disposed to surround the light incident portion, it may further include a stepped stepped from the bottom to the top direction.
  • the tubular lighting device having a light emitting surface; And a light emitting module array accommodated in the cover and having a plurality of light emitting modules arranged at regular intervals in a length direction of the cover, wherein each of the plurality of light emitting modules is disposed on the light emitting device and the light emitting device.
  • a lens for dispersing light emitted from the light emitting device wherein the lens includes a light incident part to which light emitted from the light emitting device is incident and a light exit part to emit incident light, and includes a plane of the light incident part and the light exiting part.
  • the shape has a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exit part may be disposed to have a predetermined angle with each other.
  • the interval between the plurality of light emitting modules may be 20mm to 50mm.
  • the light emitting module array may include a substrate; And a plurality of light emitting modules disposed on the substrate, the plurality of light emitting modules including a plurality of light emitting devices and a plurality of lenses, and the cover may be coupled to the substrate.
  • the light emitting module array may include a substrate; And a plurality of light emitting modules disposed on the substrate, the plurality of light emitting modules including a plurality of light emitting elements and a plurality of lenses, wherein the cover has a cylindrical shape, and the substrate is inserted into and coupled to the cylindrical cover. .
  • the light emitted from the light emitting device can emit light in a narrow and long direction through the lens, so that even if the number of light emitting devices used in a lighting device such as a tubular lighting device is reduced, shading or hot spots are reduced. There is an effect that does not occur.
  • the lens of the present invention has a long axis and a short axis in the cross-sectional shape of the light incidence portion like an ellipse shape, and the light emitted from the light emitting diode chip is formed as the long axis direction of the light incidence portion is disposed perpendicular to the length direction of the lens. There is an effect to disperse more widely in the longitudinal direction.
  • FIG. 1 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention.
  • FIG. 2 is a plan view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
  • FIG 3 is a bottom view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view showing a light emitting module having a lens coupled along the cutting line BB 'of FIG.
  • FIG. 5 is a perspective view illustrating a light emitting module according to an embodiment of the present invention, and illustrates a cross section of the lens in order to explain the shape of the lens.
  • FIG. 5 is a perspective view illustrating a light emitting module according to an embodiment of the present invention, and illustrates a cross section of the lens in order to explain the shape of the lens.
  • FIG. 6 is a plan view illustrating a tubular lighting device according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
  • FIG. 8 is a side cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
  • FIG. 9 is a side cross-sectional view showing a tubular lighting device according to another embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention.
  • 2 is a plan view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
  • 3 is a bottom view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
  • 4 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view showing a light emitting module having a lens coupled along the cutting line BB 'of FIG.
  • Figure 5 is a perspective view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view of the lens to explain the shape of the lens.
  • the shape of the lens shown in Figure 1 is a cross-sectional view taken along the cutting line AA 'of FIG.
  • the light emitting module 100 includes a light emitting device 110 and a lens 120.
  • the light emitting device 110 may be disposed on the substrate 200.
  • the substrate 200 may be insulative and a conductive circuit may be formed on the substrate 200. And it serves to support the light emitting device 110 and the lens 120.
  • the substrate 200 may be a printed circuit board and may have a mounting groove in which the light emitting device 110 is mounted.
  • the light emitting device 110 may be disposed in the mounting groove when the mounting groove is formed in the substrate 200.
  • the light emitting device 110 may be a light emitting diode chip having an SMD type, and may have a shape of a chip type light emitting diode package as necessary.
  • the light emitting device 110 may include a package, a light emitting diode chip, and a wavelength conversion layer.
  • the light emitting diode chip may be disposed on the housing, and the wavelength conversion layer may be disposed on the light emitting diode chip.
  • the housing may be formed of a resin or the like and have a cavity in which a light emitting diode chip is mounted.
  • the wavelength conversion layer may be disposed to cover the light emitting diode chip, and may include one or more kinds of phosphors that may convert white light emitted from the light emitting diode chip to emit white light to the outside.
  • the LED chip may include a light emitting structure including an n-type semiconductor layer, an active layer, and a p-type semiconductor layer.
  • the n-type semiconductor layer, the active layer, and the p-type semiconductor layer may each include a III-V group compound semiconductor, and may include, for example, a nitride semiconductor such as (Al, Ga, In) N.
  • the n-type semiconductor layer may be a conductive semiconductor layer including n-type impurities (eg, Si), and the p-type semiconductor layer may be a conductive semiconductor layer including p-type impurities (eg, Mg).
  • the active layer may be interposed between the n-type semiconductor layer and the p-type semiconductor layer, and may include a multi quantum well structure (MQW).
  • the composition ratio may be determined to emit light of a desired peak wavelength. In this embodiment, the composition ratio of the light emitting diode chip may be determined so as to emit blue light or ultraviolet light to the outside.
  • the light emitting device 110 will be described as having a shape of a light emitting diode package, but if necessary, the light emitting device 110 may be formed of a light emitting diode chip of the SMD type as described above. .
  • the lens 120 is provided to disperse the light emitted from the light emitting device 110 and is disposed to cover the light emitting device 110.
  • the lens 120 has an incident surface 121a through which light emitted from the light emitting element 110 is incident, and a light exit part 127 through which light is emitted from the lens 120 to the outside.
  • the incident surface 121a is an inner surface of the light incident part 121 having a concave shape formed under the lens 120.
  • the light incident part 121 may be formed under the lens 120 and disposed at the center of the lens 120.
  • the shape of the light incident part 121 may have a concave shape such as a longitudinal shape, as shown in FIG. 1.
  • the cross section of the light incident portion 121 may have an elliptical shape, as shown in FIG. That is, the x-axis width W1 of the light incident part 121 may be smaller than the y-axis width W2 of the light incident part 121 (W1 ⁇ W2).
  • the stepped part 123 is disposed around the light incident part 121.
  • the blocking part may be disposed between the lower surface 125 and the light incident part 121 of the lens 120, and may have a concave shape inward of the lens 120 than the lower surface 125 of the lens 120.
  • An inner upper portion of the stepped portion 123 may have a flat surface, and the planar shape of the stepped portion 123 may have a circular shape, as shown in FIG. 3.
  • the lens 120 when the lens 120 is disposed to cover the light emitting device 110 as the stepped portion 123 is disposed to surround the light incident part 121, the lens 120 may be more freely disposed in the arrangement of the light emitting device 110. Can be installed.
  • the upper surface of the light emitting device 110 may be disposed in the light incident portion 121. That is, the height from the top surface of the substrate 200 to the light emitting device 110 may be greater than the height from the top surface of the substrate 200 to the top surface of the stepped portion 123. Accordingly, the light emitted from the light emitting device 110 may be minimized from entering the lens 120 at a position other than the incident surface 121a of the light incident portion 121.
  • the light exit part 127 of the lens 120 may include a boundary part 127c which is an area where two convex parts 127a and 127b and two convex parts 127a and 127b overlap.
  • the boundary part 127c may have an arc shape in cross section, but is not necessarily limited thereto. Accordingly, light incident on the lens 120 through the incident surface 121a of the light incident part 121 may be more dispersed in the lateral direction through the convex parts 127a and 127b of the light exit part.
  • the planes of the two convex portions 127a and 127b of the light exit portion 127 may have an arc shape, and the two circles may have a shape such as a peanut shape of a partially overlapped shape. .
  • the length of the lens 120 may be different from the length of the x-axis direction and the length of the y-axis direction, and the length of the x-axis direction may be the length of the y-axis direction. It can be longer.
  • the ratio of the length of the lens 120 in the x-axis direction and the length of the y-axis direction may be 1.5 to 3: 1. Accordingly, the amount of light emitted to the outside through the lens 120 may be emitted at a ratio of 1.5 to 3: 1.
  • the length in the x-axis direction and the length in the y-axis direction of the lens 120 are different from each other, as illustrated in FIG. 2, the length B1 of the light-emitting portion 127 of the lens 120 is output. This is because it is longer than the y-axis length B2 of the light section 127, and at this time, the ratio of the x-axis length B1 of the light exit section 127 and the y-axis length B2 of the light exit section 127 is 1.5 to 3: 1 may be.
  • the major axis direction of the light exit part 127 of the lens 120 and the major axis direction of the light incident part 121 are different from each other.
  • the long axis direction of the light exit portion 127 and the long axis direction of the light incident portion 121 are described as being perpendicular to each other, but the present invention is not limited thereto, and the long axis direction of the light exit portion 127 and the light incident portion 121 are described.
  • the long axis direction of may form an angle of greater than 0 degrees and less than 180 degrees.
  • the light emitting part is more than the shorter direction (y-axis direction) of the light output part 127 of the lens 120. More light can be emitted in the long axis direction (x-axis direction) of 127.
  • a plurality of leg parts 129 may be disposed on the bottom surface 125 of the lens 120.
  • the plurality of leg portions 129 are disposed outside the step portion 123 on the lower surface 125 of the lens 120, and in this embodiment, four leg portions 129 will be described.
  • the leg part 129 is provided to separate the lower surface 125 of the lens 120 from the substrate 200 when the lens 120 is installed on the substrate 200, and the lens 120 is disposed on the substrate 200. It can be stably bound to a phase.
  • FIG. 6 is a plan view showing a tubular lighting device according to an embodiment of the present invention
  • Figure 7 is a cross-sectional view showing a tubular lighting device according to an embodiment of the present invention
  • 8 is a side cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
  • the tubular lighting device 300 includes a light emitting module 100 and a cover 310.
  • the cover 310 may have a tube shape having a light emitting surface.
  • the cover 310 may have a predetermined thickness, and as shown in FIG. 8, the cross section may have a tube shape having an arc shape.
  • the plurality of light emitting modules 100 may be disposed in the cover 310 at predetermined intervals.
  • the plurality of light emitting modules 100 may have a long axis of the lens 120 in the same direction as the length direction of the cover 310. Accordingly, the light emitted from the light emitting module 100 may emit more light in the longitudinal direction of the tubular lighting device 300. Accordingly, the number of light emitting modules 100 to be installed may be reduced as compared with the conventional tubular lighting device 300 that does not use the lens 120.
  • the plurality of light emitting modules 100 installed in the tubular lighting device 300 are disposed to maintain a distance that can minimize interference of light emitted from each light emitting module 100. Accordingly, the influence of heat generated by each light emitting module 100 on the adjacent light emitting module 100 can be minimized.
  • the interval between the plurality of light emitting module 100 is installed may be changed by various acceptances such as the purpose and manufacturing method, the interval (T) between the light emitting module 100 may be 20mm ⁇ T ⁇ 50mm.
  • the light emitted from the plurality of light emitting modules 100 can be effectively dispersed, and the light can be uniformly emitted to the outside over the entire cover 310 of the tubular lighting device 300. Accordingly, the viewing angle (that is, the orientation angle) may be secured, the interference between the light emitting modules 100 may be minimized, and the damage of the light emitting device 110 of the light emitting module 100 may be minimized by heat. .
  • the cover 310 is manufactured through a separate process, and the cover 310 may be coupled with the substrate 200 on which the at least one light emitting module 100 is mounted. Can be. In this case, a separate groove or mounting portion for mounting the cover 310 may be formed in the substrate 200.
  • FIG. 9 is a side cross-sectional view showing a tubular lighting device according to another embodiment of the present invention.
  • the tubular lighting device 300 is an example in which a substrate 200 in which a plurality of light emitting modules 100 are installed is installed in a cover 310.
  • the cover 310 has a cylindrical shape, and the substrate 200 in which the plurality of light emitting modules 100 are installed is mounted in the cover 310.
  • the cover 310 may be provided with a groove or a mounting portion that can be coupled to the substrate 200.
  • 127 light exit portion 127a
  • 127b convex portion

Abstract

The present invention relates to a light emitting module, a lens, and a tubular lighting apparatus comprising the same. A light emitting module according to an embodiment of the present invention may comprise: a plurality of light emitting elements disposed on a substrate; and a plurality of lenses disposed above the plurality of light emitting elements, respectively, so as to diffuse light emitted from the light emitting elements, wherein: each of the plurality of lenses includes a light entrance part to which light emitted from each of the light emitting elements is incident and a light exit part from which the incident light is output; when viewed in the plane view thereof, each of the light entrance part and the light exit part has a major axis and a minor axis; and the major axis of the light entrance part and the major axis of the light exit part are arranged to form a predetermined angle with each other. According to the present invention, light emitted from a light emitting element can be diffused in a narrow and long direction through a lens, and thus a shadow or a hotspot does not occur even when a reduced number of light emitting elements are used in a lighting apparatus such as a tubular lighting apparatus.

Description

발광모듈, 렌즈 및 이를 포함하는 튜브형 조명 장치Light emitting module, lens and tubular lighting device including the same
본 발명은 발광모듈, 렌즈 및 이를 포함하는 튜브형 조명 장치에 관한 것으로, 더욱 상세하게는 발광 다이오드에서 방출된 광을 확산할 수 있는 발광모듈, 렌즈 및 이를 포함하는 튜브형 조명 장치에 관한 것이다.The present invention relates to a light emitting module, a lens and a tubular lighting apparatus including the same, and more particularly, to a light emitting module, a lens and a tubular lighting apparatus including the same that can diffuse the light emitted from the light emitting diode.
발광 다이오드는 전자와 정공의 재결합을 통해 발생하는 광을 방출하는 무기반도체 소자이다. 최근, 발광 다이오드는 디스플레이 장치, 차량용 램프, 일반 조명 등과 같은 여러 분야에 다양하게 이용되고 있다. 발광 다이오드는 수명이 길고, 소비 전력이 낮으며, 응답속도가 빠른 장점이 있으며, 이러한 장점으로 인해 기존 광원을 빠르게 대치해 가고 있다.A light emitting diode is an inorganic semiconductor device that emits light generated through recombination of electrons and holes. Recently, light emitting diodes have been used in various fields such as display devices, vehicle lamps, and general lighting. The light emitting diode has a long lifespan, low power consumption, and fast response speed. The LEDs are rapidly replacing conventional light sources.
이러한 발광 다이오드를 이용하여 튜브형 조명 장치를 제조하는 경우, 수 개 내지 수십 개의 발광 다이오드가 이용될 수 있다. 그런데, 발광 다이오드가 갖는 지향각으로 인해 튜브형 조명 장치를 이용할 때, 외부에 음영 및 핫스팟이 발생할 수 있다. 음영 및 핫스팟은 복수의 발광 다이오드가 서로 이격 배치되었을 때, 발광 다이오드들 사이의 위치가 어둡고 발광 다이오드가 배치된 위치가 밝게 보이는 현상이다.When manufacturing the tubular lighting device using such a light emitting diode, several to several dozen light emitting diodes may be used. However, when the tubular lighting device is used due to the directivity angle of the light emitting diode, shading and hot spots may occur outside. Shading and hot spots are a phenomenon in which when the plurality of light emitting diodes are spaced apart from each other, the position between the light emitting diodes is dark and the position where the light emitting diodes are arranged is bright.
그에 따라 종래의 튜브형 조명 장치는 복수의 발광 다이오드의 간격을 좁혀 음영이나 핫스팟이 발생하지 않도록 할 수 있다. 하지만, 이렇게 발광 다이오드들의 간격을 좁히면, 튜브형 조명 장치에 이용되는 발광 다이오드의 수가 증가하기 때문에 제조 단가가 높아질 수 있는 문제가 있다.Accordingly, the conventional tubular lighting device can narrow the interval of the plurality of light emitting diodes so that no shadows or hot spots occur. However, if the interval between the light emitting diodes is narrowed, there is a problem that the manufacturing cost can be increased because the number of light emitting diodes used in the tubular lighting device increases.
또한, 발광 다이오드들 간의 거리가 좁아짐에 따라 각 발광 다이오드에서 방출된 광들 간의 간섭이 발생할 수 있으며, 발광 다이오드에서 발생된 열로 인해 발광 다이오드가 손상되는 등의 문제가 발생할 수 있다.In addition, as the distance between the light emitting diodes decreases, interference between the light emitted from each light emitting diode may occur, and a problem such as damage to the light emitting diode may occur due to heat generated from the light emitting diodes.
본 발명이 해결하고자 하는 과제는, 튜브형 조명 장치 등에 복수의 발광 다이오드를 이용하더라도 발광 다이오드들 간의 간격이 넓히더라도 음영이나 핫스팟이 발생하지 않기 위한 발광모듈, 렌즈 및 튜브형 조명 장치를 제공하는 것이다.An object of the present invention is to provide a light emitting module, a lens, and a tubular lighting device for preventing shadows or hot spots even when a plurality of light emitting diodes are used in a tubular lighting device or the like, even if the distance between the light emitting diodes is widened.
본 발명의 일 실시예에 따른 발광모듈은, 기판 상에 배치된 복수의 발광소자; 상기 복수의 발광소자의 상부에 각각 배치되며, 상기 발광소자에서 방출된 광을 분산시키는 복수의 렌즈를 포함하고, 상기 복수의 렌즈 각각은, 상기 발광소자에서 방출된 광이 입사되는 입광부와 입사된 광을 출광하는 출광부를 포함하며, 상기 입광부 및 출광부의 평면 형상은 각각 장축과 단축을 가지고, 상기 입광부의 장축과 상기 출광부의 장축은 서로 소정의 각도를 가지게 배치될 수 있다.A light emitting module according to an embodiment of the present invention, a plurality of light emitting elements disposed on a substrate; A plurality of lenses respectively disposed on the plurality of light emitting devices, the plurality of lenses dispersing light emitted from the light emitting devices, and each of the plurality of lenses includes a light incident part to which light emitted from the light emitting devices is incident; And a light emitting part for emitting the light, wherein the light receiving part and the planar shape of the light exiting part have a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exiting part may be disposed to have a predetermined angle with each other. .
이때, 상기 입광부의 장축과 상기 출광부의 장축은 서로 수직하게 배치될 수 있다.In this case, the long axis of the light incident part and the long axis of the light exit part may be disposed perpendicular to each other.
그리고 상기 렌즈는 하면에 상기 입광부를 둘러싸는 단차부가 형성될 수 있다.The lens may have a stepped portion surrounding the light incident portion.
또한, 상기 출광부는 두 개의 볼록부와 상기 두 개의 볼록부가 중첩되는 경계부를 포함할 수 있고, 상기 경계부는 단면 상 원호 형상으로 오목할 수 있다.In addition, the light exit portion may include a boundary portion where two convex portions and the two convex portions overlap, and the boundary portion may be concave in an arc shape in cross section.
이때, 상기 렌즈의 출광부는 장축과 단축의 길이가 1.5 내지 3 : 1의 비율을 가질 수 있다.In this case, the light exit portion of the lens may have a ratio of 1.5 to 3: 1 in length of the long axis and short axis.
또한, 상기 기판에서 상기 복수의 발광소자의 상면까지의 높이는 상기 기판에서 상기 렌즈의 입광부까지의 높이보다 클 수 있다.In addition, the height from the substrate to the upper surface of the plurality of light emitting devices may be greater than the height from the substrate to the light incident portion of the lens.
한편, 본 발명의 일 실시예에 따른 렌즈는, 하부에 형성되고, 발광소자에서 방출된 광이 입사되는 입광부; 및 상기 입광부로 입사된 광을 외부로 출광하는 출광부를 포함하고, 상기 입광부와 출광부의 평면 형상은 각각 장축과 단축을 가지며, 상기 입광부의 장축과 상기 출광부의 장축은 서로 소정의 각도를 가지도록 형성될 수 있다.On the other hand, the lens according to an embodiment of the present invention, the light incident portion formed in the lower portion, the light emitted from the light emitting element is incident; And a light exit part for outputting light incident to the light incident part to the outside, wherein the planar shape of the light incident part and the light exit part has a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exit part are predetermined. It may be formed to have an angle of.
이때, 상기 입광부의 장축과 상기 출광부의 장축은 서로 수직하게 형성될 수 있다.In this case, the long axis of the light incident portion and the long axis of the light exit portion may be formed perpendicular to each other.
또한, 상기 입광부는 오목한 형상을 가지고, 상기 출광부는 두 개의 볼록부와 상기 두 개의 볼록부가 중첩되는 경계부를 가질 수 있으며, 상기 경계부는 단면 상 원호 형상으로 오목할 수 있다.In addition, the light incident portion may have a concave shape, the light exit portion may have a boundary portion where two convex portions and the two convex portions overlap, and the boundary portion may be concave in an arc shape on a cross section.
그리고 상기 출광부는 장축과 단축의 길이가 1.5 내지 3 : 1의 비율을 가질 수 있다.The light exit portion may have a length of 1.5 to 3: 1 in the length of the long axis and the short axis.
또, 상기 입광부의 주변에 배치되는 복수의 다리를 더 포함할 수 있다.The apparatus may further include a plurality of legs disposed around the light incident part.
그리고 상기 입광부를 둘러싸도록 배치되며, 상기 하부에서 상부 방향으로 단차진 단차부를 더 포함할 수 있다.And it is disposed to surround the light incident portion, it may further include a stepped stepped from the bottom to the top direction.
또 한편, 본 발명의 일 실시예에 따른 튜브형 조명 장치는, 광방출면을 갖는 튜브 형상의 커버; 및 상기 커버 내에 수용되고, 복수의 발광모듈이 상기 커버의 길이 방향으로 일정한 간격으로 배치된 발광모듈 어레이를 포함하고, 상기 복수의 발광모듈 각각은, 발광소자 및 상기 발광소자의 상부에 배치되어 상기 발광소자에서 방출된 광을 분산시키는 렌즈를 포함하며, 상기 렌즈는 상기 발광소자에서 방출된 광이 입사되는 입광부와 입사된 광을 출광하는 출광부를 포함하고, 상기 입광부 및 출광부의 평면 형상은 각각 장축과 단축을 가지며, 상기 입광부의 장축과 출광부의 장축은 서로 소정의 각도를 가지게 배치될 수 있다.On the other hand, the tubular lighting device according to an embodiment of the present invention, the tubular cover having a light emitting surface; And a light emitting module array accommodated in the cover and having a plurality of light emitting modules arranged at regular intervals in a length direction of the cover, wherein each of the plurality of light emitting modules is disposed on the light emitting device and the light emitting device. And a lens for dispersing light emitted from the light emitting device, wherein the lens includes a light incident part to which light emitted from the light emitting device is incident and a light exit part to emit incident light, and includes a plane of the light incident part and the light exiting part. The shape has a long axis and a short axis, respectively, and the long axis of the light incident part and the long axis of the light exit part may be disposed to have a predetermined angle with each other.
이때, 상기 복수의 발광모듈 간의 간격은 20mm 내지 50mm일 수 있다.At this time, the interval between the plurality of light emitting modules may be 20mm to 50mm.
그리고 상기 발광모듈 어레이는, 기판; 및 상기 기판 상에 배치되며, 복수의 발광소자 및 복수의 렌즈를 포함하는 복수의 발광모듈을 포함하고, 상기 커버는 상기 기판 상에 결합될 수 있다.The light emitting module array may include a substrate; And a plurality of light emitting modules disposed on the substrate, the plurality of light emitting modules including a plurality of light emitting devices and a plurality of lenses, and the cover may be coupled to the substrate.
또는, 상기 발광모듈 어레이는, 기판; 및 상기 기판 상에 배치되며, 복수의 발광소자 및 복수의 렌즈를 포함하는 복수의 발광모듈을 포함하고, 상기 커버는 원통 형상을 가지며, 상기 기판이 상기 원통 형상의 커버에 삽입되어 결합될 수 있다.Alternatively, the light emitting module array may include a substrate; And a plurality of light emitting modules disposed on the substrate, the plurality of light emitting modules including a plurality of light emitting elements and a plurality of lenses, wherein the cover has a cylindrical shape, and the substrate is inserted into and coupled to the cylindrical cover. .
본 발명에 의하면, 발광소자에서 방출된 광이 렌즈를 통해 폭이 좁고 길이가 긴 방향으로 광을 방출할 수 있어, 튜브형 조명 장치와 같은 조명 장치에 이용하는 발광소자의 개수를 줄이더라도 음영이나 핫스팟이 발생하지 않는 효과가 있다.According to the present invention, the light emitted from the light emitting device can emit light in a narrow and long direction through the lens, so that even if the number of light emitting devices used in a lighting device such as a tubular lighting device is reduced, shading or hot spots are reduced. There is an effect that does not occur.
특히, 본 발명의 렌즈는 입광부의 단면 형상이 타원 형상과 같이, 장축과 단축을 가지고, 입광부의 장축 방향이 렌즈의 길이 방향에 수직하게 배치됨에 따라 발광 다이오드 칩에서 방출된 광을 렌즈의 길이 방향으로 보다 넓게 분산시키는 효과가 있다.In particular, the lens of the present invention has a long axis and a short axis in the cross-sectional shape of the light incidence portion like an ellipse shape, and the light emitted from the light emitting diode chip is formed as the long axis direction of the light incidence portion is disposed perpendicular to the length direction of the lens. There is an effect to disperse more widely in the longitudinal direction.
도 1은 본 발명의 일 실시예에 따른 발광모듈을 도시한 단면도이다.1 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 발광모듈에 포함된 렌즈를 도시한 평면도이다.2 is a plan view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따른 발광모듈에 포함된 렌즈를 도시한 저면도이다.3 is a bottom view illustrating a lens included in a light emitting module according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 발광모듈을 도시한 단면도로, 렌즈가 결합된 발광모듈을 도 3의 절취선 BB'를 따라 취한 것을 도시한 단면도이다.4 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view showing a light emitting module having a lens coupled along the cutting line BB 'of FIG.
도 5는 본 발명의 일 실시예에 따른 발광모듈을 도시한 사시도로, 렌즈의 형상을 설명하기 위해 렌즈의 단면을 도시한 도면이다.FIG. 5 is a perspective view illustrating a light emitting module according to an embodiment of the present invention, and illustrates a cross section of the lens in order to explain the shape of the lens. FIG.
도 6은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 평면도이다.6 is a plan view illustrating a tubular lighting device according to an embodiment of the present invention.
도 7은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 단면도이다.7 is a cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
도 8은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 측단면도이다.8 is a side cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
도 9는 본 발명의 다른 실시예에 따른 튜브형 조명 장치를 도시한 측단면도이다.9 is a side cross-sectional view showing a tubular lighting device according to another embodiment of the present invention.
본 발명의 바람직한 실시예에 대하여 첨부된 도면을 참조하여 더 구체적으로 설명한다.Preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
도 1은 본 발명의 일 실시예에 따른 발광모듈을 도시한 단면도이다. 도 2는 본 발명의 일 실시예에 따른 발광모듈에 포함된 렌즈를 도시한 평면도이다. 도 3은 본 발명의 일 실시예에 따른 발광모듈에 포함된 렌즈를 도시한 저면도이다. 도 4는 본 발명의 일 실시예에 따른 발광모듈을 도시한 단면도로, 렌즈가 결합된 발광모듈을 도 3의 절취선 BB'를 따라 취한 것을 도시한 단면도이다. 또한, 도 5는 본 발명의 일 실시예에 따른 발광모듈을 도시한 사시도로, 렌즈의 형상을 설명하기 위해 렌즈의 단면을 도시한 도면이다.1 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention. 2 is a plan view illustrating a lens included in a light emitting module according to an embodiment of the present invention. 3 is a bottom view illustrating a lens included in a light emitting module according to an embodiment of the present invention. 4 is a cross-sectional view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view showing a light emitting module having a lens coupled along the cutting line BB 'of FIG. In addition, Figure 5 is a perspective view showing a light emitting module according to an embodiment of the present invention, a cross-sectional view of the lens to explain the shape of the lens.
이때, 도 1에 도시된 렌즈의 형상은 도 3의 절취선 AA'를 따라 취한 것을 도시한 단면이다.At this time, the shape of the lens shown in Figure 1 is a cross-sectional view taken along the cutting line AA 'of FIG.
도 1 내지 도 5를 참조하면, 본 발명의 일 실시예에 따른 발광모듈(100)은, 발광소자(110) 및 렌즈(120)를 포함한다.1 to 5, the light emitting module 100 according to an embodiment of the present invention includes a light emitting device 110 and a lens 120.
발광소자(110)는 기판(200) 상에 배치될 수 있다. 이때, 기판(200)은 절연성을 가지고, 도전회로가 상부에 형성될 수 있다. 그리고 발광소자(110) 및 렌즈(120)를 지지하는 역할을 한다. 본 실시예에서 기판(200)은 인쇄회로기판일 수 있고, 발광소자(110)가 실장되는 실장 홈을 가질 수 있다.The light emitting device 110 may be disposed on the substrate 200. In this case, the substrate 200 may be insulative and a conductive circuit may be formed on the substrate 200. And it serves to support the light emitting device 110 and the lens 120. In this embodiment, the substrate 200 may be a printed circuit board and may have a mounting groove in which the light emitting device 110 is mounted.
여기서, 발광소자(110)는 기판(200)에 실장 홈이 형성된 경우 실장 홈 내에 배치될 수 있다. 발광소자(110)는 SMD 형태의 발광 다이오드 칩일 수 있고, 필요에 따라 칩형 발광 다이오드 패키지의 형태를 가질 수 있다.Here, the light emitting device 110 may be disposed in the mounting groove when the mounting groove is formed in the substrate 200. The light emitting device 110 may be a light emitting diode chip having an SMD type, and may have a shape of a chip type light emitting diode package as necessary.
본 실시예에서 발광소자(110)는 패키지, 발광 다이오드 칩 및 파장변환층을 포함할 수 있다. 발광 다이오드 칩은 하우징 상에 배치되고, 발광 다이오드 칩 상부에 파장변환층이 배치될 수 있다. 하우징은 수지 등으로 형성되어, 내부에 발광 다이오드 칩이 실장되는 캐비티를 가질 수 있다. 그리고 파장변환층은 발광 다이오드 칩을 덮도록 배치되며, 내부에 발광 다이오드 칩에서 방출된 광을 파장 변환하여 외부로 백색광을 방출할 수 있는 한 종류 이상의 형광체를 포함할 수 있다.In the present embodiment, the light emitting device 110 may include a package, a light emitting diode chip, and a wavelength conversion layer. The light emitting diode chip may be disposed on the housing, and the wavelength conversion layer may be disposed on the light emitting diode chip. The housing may be formed of a resin or the like and have a cavity in which a light emitting diode chip is mounted. The wavelength conversion layer may be disposed to cover the light emitting diode chip, and may include one or more kinds of phosphors that may convert white light emitted from the light emitting diode chip to emit white light to the outside.
발광 다이오드 칩은 n형 반도체층, 활성층 및 p형 반도체층을 포함하는 발광구조체를 포함할 수 있다.The LED chip may include a light emitting structure including an n-type semiconductor layer, an active layer, and a p-type semiconductor layer.
n형 반도체층, 활성층 및 p형 반도체층은 각각 III-V족 계열의 화합물 반도체를 포함할 수 있고, 일례로, (Al, Ga, In)N과 같은 질화물 반도체를 포함할 수 있다.The n-type semiconductor layer, the active layer, and the p-type semiconductor layer may each include a III-V group compound semiconductor, and may include, for example, a nitride semiconductor such as (Al, Ga, In) N.
n형 반도체층은 n형 불순물(예컨대, Si)을 포함하는 도전형 반도체층일 수 있고, p형 반도체층은 p형 불순물(예컨대, Mg)을 포함하는 도전형 반도체층일 수 있다. 그리고 활성층은 n형 반도체층 및 p형 반도체층 사이에 개재될 수 있으며, 다중 양자우물 구조(MQW)를 포함할 수 있다. 그리고 원하는 피크 파장의 광을 방출할 수 있게 조성비가 결정될 수 있다. 본 실시예에서, 발광 다이오드 칩은 청색광 또는 자외선을 외부로 방출하도록 조성비가 결정될 수 있다.The n-type semiconductor layer may be a conductive semiconductor layer including n-type impurities (eg, Si), and the p-type semiconductor layer may be a conductive semiconductor layer including p-type impurities (eg, Mg). The active layer may be interposed between the n-type semiconductor layer and the p-type semiconductor layer, and may include a multi quantum well structure (MQW). The composition ratio may be determined to emit light of a desired peak wavelength. In this embodiment, the composition ratio of the light emitting diode chip may be determined so as to emit blue light or ultraviolet light to the outside.
또한, 본 실시예에서, 발광소자(110)는 발광 다이오드 패키지의 형상을 가지는 것에 대해 설명하지만, 필요에 따라 발광소자(110)는 앞서 설명한 바와 같이, SMD 형태의 발광 다이오드 칩으로 형성될 수도 있다.In addition, in the present embodiment, the light emitting device 110 will be described as having a shape of a light emitting diode package, but if necessary, the light emitting device 110 may be formed of a light emitting diode chip of the SMD type as described above. .
렌즈(120)는 발광소자(110)에서 방출된 광을 분산하기 위해 구비되며, 발광소자(110)를 덮도록 배치된다. 그리고 렌즈(120)는 발광소자(110)에서 방출된 광이 입사하는 입사면(121a)과 렌즈(120)에서 외부로 광이 출사하는 출광부(127)을 갖는다. 이때, 입사면(121a)은 렌즈(120)의 하부에 형성된 오목한 형상을 갖는 입광부(121)의 내면이다.The lens 120 is provided to disperse the light emitted from the light emitting device 110 and is disposed to cover the light emitting device 110. The lens 120 has an incident surface 121a through which light emitted from the light emitting element 110 is incident, and a light exit part 127 through which light is emitted from the lens 120 to the outside. In this case, the incident surface 121a is an inner surface of the light incident part 121 having a concave shape formed under the lens 120.
입광부(121)는 렌즈(120)의 하부에 형성되며, 렌즈(120)의 중앙에 배치될 수 있다. 그리고 입광부(121)의 형상은 종단면이 도 1에 도시된 바와 같이, 종 형상과 같은 오목한 형상을 가질 수 있다. 그리고 입광부(121)의 횡단면이 도 3에 도시된 바와 같이, 타원형상을 가질 수 있다. 즉, 입광부(121)의 x축 방향 너비(W1)는 입광부(121)의 y축 방향 너비(W2)보다 작을 수 있다(W1<W2).The light incident part 121 may be formed under the lens 120 and disposed at the center of the lens 120. In addition, the shape of the light incident part 121 may have a concave shape such as a longitudinal shape, as shown in FIG. 1. And the cross section of the light incident portion 121 may have an elliptical shape, as shown in FIG. That is, the x-axis width W1 of the light incident part 121 may be smaller than the y-axis width W2 of the light incident part 121 (W1 <W2).
그리고 입광부(121)의 주변에는 단차부(123)가 배치된다. 차단부는 렌즈(120)의 하면(125)과 입광부(121) 사이에 배치되며, 렌즈(120)의 하면(125)보다 렌즈(120)의 내측으로 오목한 형상을 가질 수 있다. 단차부(123)의 내측 상부는 평평한 면을 가질 수 있으며, 단차부(123)의 평면 형상은 도 3에 도시된 바와 같이, 원 형상을 가질 수 있다.The stepped part 123 is disposed around the light incident part 121. The blocking part may be disposed between the lower surface 125 and the light incident part 121 of the lens 120, and may have a concave shape inward of the lens 120 than the lower surface 125 of the lens 120. An inner upper portion of the stepped portion 123 may have a flat surface, and the planar shape of the stepped portion 123 may have a circular shape, as shown in FIG. 3.
이렇게 입광부(121)를 둘러싸도록 단차부(123)가 배치됨에 따라 발광소자(110)를 덮도록 렌즈(120)가 배치될 때, 발광소자(110)의 배치에 보다 자유롭게 렌즈(120)를 설치할 수 있다.Thus, when the lens 120 is disposed to cover the light emitting device 110 as the stepped portion 123 is disposed to surround the light incident part 121, the lens 120 may be more freely disposed in the arrangement of the light emitting device 110. Can be installed.
여기서, 상기와 같이, 단차부(123)가 형성되더라도 도 1에 도시된 바와 같이, 발광소자(110)의 상면은 입광부(121) 내에 배치될 수 있다. 즉, 기판(200)의 상면에서 발광소자(110)까지의 높이는 기판(200)의 상면에서 단차부(123)의 상면까지의 높이보다 클 수 있다. 그에 따라 발광소자(110)에서 방출된 광이 입광부(121)의 입사면(121a)이 아닌 위치에서 렌즈(120)로 입사되는 것을 최소화할 수 있다.Here, as described above, even if the stepped portion 123 is formed, as shown in FIG. 1, the upper surface of the light emitting device 110 may be disposed in the light incident portion 121. That is, the height from the top surface of the substrate 200 to the light emitting device 110 may be greater than the height from the top surface of the substrate 200 to the top surface of the stepped portion 123. Accordingly, the light emitted from the light emitting device 110 may be minimized from entering the lens 120 at a position other than the incident surface 121a of the light incident portion 121.
또한, 렌즈(120)의 출광부(127)은 두 개의 볼록부(127a, 127b)와 두 개의 볼록부(127a, 127b)가 중첩되는 영역인 경계부(127c)를 포함할 수 있다. 경계부(127c)는 도 4에 도시된 바와 같이, 단면이 원호 형태를 가질 수 있지만, 반드시 이에 한정되는 것은 아니다. 그에 따라 입광부(121)의 입사면(121a)을 통해 렌즈(120)로 입사된 광이 출광부의 볼록부(127a, 127b)를 통해 측면 방향으로 보다 분산될 수 있다.In addition, the light exit part 127 of the lens 120 may include a boundary part 127c which is an area where two convex parts 127a and 127b and two convex parts 127a and 127b overlap. As shown in FIG. 4, the boundary part 127c may have an arc shape in cross section, but is not necessarily limited thereto. Accordingly, light incident on the lens 120 through the incident surface 121a of the light incident part 121 may be more dispersed in the lateral direction through the convex parts 127a and 127b of the light exit part.
다시 도 2를 참조하면, 출광부(127)의 두 개의 볼록부(127a, 127b)의 평면은 원호 형상을 가질 수 있으며, 두 개의 원이 일부 중첩된 형상의 땅콩 형상과 같은 형상을 가질 수 있다.Referring back to FIG. 2, the planes of the two convex portions 127a and 127b of the light exit portion 127 may have an arc shape, and the two circles may have a shape such as a peanut shape of a partially overlapped shape. .
본 발명의 일 실시예에서 렌즈(120)는 도 2 및 도 3에 도시된 바와 같이, x축 방향의 길이와 y축 방향의 길이가 다를 수 있으며, x축 방향의 길이가 y축 방향의 길이보다 길 수 있다. 이때, 본 실시예에서, 렌즈(120)의 x축 방향의 길이와 y축 방향의 길이의 비율은 1.5 내지 3 : 1일 수 있다. 그에 따라 렌즈(120)를 통해 외부로 방출되는 광량은 1.5 내지 3 : 1의 비율로 방출될 될 수 있다.2 and 3, the length of the lens 120 may be different from the length of the x-axis direction and the length of the y-axis direction, and the length of the x-axis direction may be the length of the y-axis direction. It can be longer. At this time, in the present embodiment, the ratio of the length of the lens 120 in the x-axis direction and the length of the y-axis direction may be 1.5 to 3: 1. Accordingly, the amount of light emitted to the outside through the lens 120 may be emitted at a ratio of 1.5 to 3: 1.
상기와 같이, 렌즈(120)의 x축 방향의 길이와 y축 방향의 길이가 다른 것은 도 2에 도시된 바와 같이, 렌즈(120) 출광부(127)의 x축 방향 길이(B1)가 출광부(127)의 y축 방향 길이(B2)보다 길기 때문이며, 이때, 출광부(127)의 x축 방향 길이(B1)와 출광부(127)의 y축 방향 길이(B2)의 비율은 1.5 내지 3 : 1일 수 있다.As described above, the length in the x-axis direction and the length in the y-axis direction of the lens 120 are different from each other, as illustrated in FIG. 2, the length B1 of the light-emitting portion 127 of the lens 120 is output. This is because it is longer than the y-axis length B2 of the light section 127, and at this time, the ratio of the x-axis length B1 of the light exit section 127 and the y-axis length B2 of the light exit section 127 is 1.5 to 3: 1 may be.
또한, 도 2 및 도 3을 참조하면, 렌즈(120)의 출광부(127)의 장축 방향과 입광부(121)의 장축 방향이 서로 다른 것을 확인할 수 있다. 본 실시예에서, 출광부(127)의 장축 방향과 입광부(121)의 장축 방향은 서로 수직한 것에 대해 설명하지만, 이에 한정되지 않고, 출광부(127)의 장축 방향과 입광부(121)의 장축 방향은 0도 초과 180도 미만의 각도를 이룰 수 있다.2 and 3, it can be seen that the major axis direction of the light exit part 127 of the lens 120 and the major axis direction of the light incident part 121 are different from each other. In the present embodiment, the long axis direction of the light exit portion 127 and the long axis direction of the light incident portion 121 are described as being perpendicular to each other, but the present invention is not limited thereto, and the long axis direction of the light exit portion 127 and the light incident portion 121 are described. The long axis direction of may form an angle of greater than 0 degrees and less than 180 degrees.
그에 따라 발광소자(110)에서 렌즈(120)의 입광부(121)를 통해 입사된 광이 외부로 출사될 때, 렌즈(120) 출광부(127)의 단축 방향(y축 방향)보다 출광부(127)의 장축 방향(x축 방향)으로 보다 많은 광이 방출될 수 있다.Accordingly, when light incident from the light emitting device 110 through the light incidence part 121 of the lens 120 is emitted to the outside, the light emitting part is more than the shorter direction (y-axis direction) of the light output part 127 of the lens 120. More light can be emitted in the long axis direction (x-axis direction) of 127.
또한, 렌즈(120)의 하면(125)에 복수의 다리부(129)가 배치될 수 있다. 복수의 다리부(129)는 렌즈(120)의 하면(125)에서 단차부(123)의 외측에 배치되며, 본 실시예에서, 네 개의 다리부(129)가 배치된 것에 대해 설명한다. 다리부(129)는 렌즈(120)가 기판(200)에 설치될 때, 기판(200)에서 렌즈(120)의 하면(125)을 이격시키기 위해 구비되며, 렌즈(120)를 기판(200) 상에 안정적으로 결합시킬 수 있다.In addition, a plurality of leg parts 129 may be disposed on the bottom surface 125 of the lens 120. The plurality of leg portions 129 are disposed outside the step portion 123 on the lower surface 125 of the lens 120, and in this embodiment, four leg portions 129 will be described. The leg part 129 is provided to separate the lower surface 125 of the lens 120 from the substrate 200 when the lens 120 is installed on the substrate 200, and the lens 120 is disposed on the substrate 200. It can be stably bound to a phase.
도 6은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 평면도이고, 도 7은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 단면도이다. 그리고 도 8은 본 발명의 일 실시예에 따른 튜브형 조명 장치를 도시한 측단면도이다.6 is a plan view showing a tubular lighting device according to an embodiment of the present invention, Figure 7 is a cross-sectional view showing a tubular lighting device according to an embodiment of the present invention. 8 is a side cross-sectional view showing a tubular lighting device according to an embodiment of the present invention.
도 6 내지 도 8을 참조하면, 본 발명의 일 실시예에 따른 튜브형 조명 장치(300)는, 발광모듈(100) 및 커버(310)를 포함한다.6 to 8, the tubular lighting device 300 according to an embodiment of the present invention includes a light emitting module 100 and a cover 310.
커버(310)는 광방출면을 갖는 튜브형상을 가질 수 있다. 커버(310)의 소정의 두께를 가지며, 도 8에 도시된 바와 같이, 단면이 원호 형상을 갖는 튜브 형상을 가질 수 있다.The cover 310 may have a tube shape having a light emitting surface. The cover 310 may have a predetermined thickness, and as shown in FIG. 8, the cross section may have a tube shape having an arc shape.
그리고 커버(310) 내에 복수의 발광모듈(100)이 일정 간격으로 배치될 수 있다. 이때, 복수의 발광모듈(100)은 렌즈(120)의 장축이 커버(310)의 길이 방향과 동일한 방향으로 배치될 수 있다. 그에 따라 발광모듈(100)에서 방출된 광은 튜브형 조명 장치(300)의 길이 방향으로 보다 많은 광량을 방출할 수 있다. 그에 따라 렌즈(120)를 사용하지 않는 종래의 튜브형 조명 장치(300)에 비해 설치하는 발광모듈(100)의 수를 줄일 수 있다.In addition, the plurality of light emitting modules 100 may be disposed in the cover 310 at predetermined intervals. In this case, the plurality of light emitting modules 100 may have a long axis of the lens 120 in the same direction as the length direction of the cover 310. Accordingly, the light emitted from the light emitting module 100 may emit more light in the longitudinal direction of the tubular lighting device 300. Accordingly, the number of light emitting modules 100 to be installed may be reduced as compared with the conventional tubular lighting device 300 that does not use the lens 120.
그리고 튜브형 조명 장치(300)에 설치되는 복수의 발광모듈(100)은 각 발광모듈(100)에서 방출된 광의 간섭을 최소화할 수 있는 거리가 유지되도록 배치된다. 그에 따라 각 발광모듈(100)에서 발생된 열이 인접한 발광모듈(100)에 주는 영향을 최소화할 수 있다. 여기서, 복수의 발광모듈(100)이 설치되는 간격은 목적 및 제작 방법 등과 같은 다양한 용인에 의해 바뀔 수 있으며, 발광모듈(100) 간의 간격(T)은 20mm≤T≤50mm일 수 있다.In addition, the plurality of light emitting modules 100 installed in the tubular lighting device 300 are disposed to maintain a distance that can minimize interference of light emitted from each light emitting module 100. Accordingly, the influence of heat generated by each light emitting module 100 on the adjacent light emitting module 100 can be minimized. Here, the interval between the plurality of light emitting module 100 is installed may be changed by various acceptances such as the purpose and manufacturing method, the interval (T) between the light emitting module 100 may be 20mm≤T≤50mm.
그에 따라 복수의 발광모듈(100)에서 방출되는 광을 효과적으로 분산시킬 수 있고, 튜브형 조명 장치(300)의 커버(310) 전체에 걸쳐 광이 균일하게 외부로 방출될 수 있다. 그에 따라 가시각도(즉, 지향각)를 확보할 수 있으며, 발광모듈(100) 간의 간섭을 최소화할 수 있고, 열에 의해 발광모듈(100)의 발광소자(110)가 손상되는 것을 최소화할 수 있다.Accordingly, the light emitted from the plurality of light emitting modules 100 can be effectively dispersed, and the light can be uniformly emitted to the outside over the entire cover 310 of the tubular lighting device 300. Accordingly, the viewing angle (that is, the orientation angle) may be secured, the interference between the light emitting modules 100 may be minimized, and the damage of the light emitting device 110 of the light emitting module 100 may be minimized by heat. .
그리고 본 실시예에서, 도 8에 도시된 바와 같이, 커버(310)는 별도의 공정을 통해 제작하고, 커버(310)를 적어도 하나 이상의 발광모듈(100)이 실장된 기판(200)과 결합할 수 있다. 이때, 기판(200)에는 커버(310)를 장착할 수 있는 별도의 홈이나 장착부가 형성될 수 있다.In this embodiment, as shown in FIG. 8, the cover 310 is manufactured through a separate process, and the cover 310 may be coupled with the substrate 200 on which the at least one light emitting module 100 is mounted. Can be. In this case, a separate groove or mounting portion for mounting the cover 310 may be formed in the substrate 200.
도 9는 본 발명의 다른 실시예에 따른 튜브형 조명 장치를 도시한 측단면도이다.9 is a side cross-sectional view showing a tubular lighting device according to another embodiment of the present invention.
도 9를 참조하면, 본 발명의 다른 실시예에 따른 튜브형 조명 장치(300)는 커버(310) 내에 복수의 발광모듈(100)이 설치된 기판(200)이 설치된 일례이다. 본 실시예에서 커버(310)는 원통 형상을 가지며, 커버(310) 내에 복수의 발광모듈(100)이 설치된 기판(200)이 장착된다. 이때, 커버(310)는 기판(200)과 결합할 수 있는 홈이나 장착부가 설치될 수 있다.Referring to FIG. 9, the tubular lighting device 300 according to another embodiment of the present invention is an example in which a substrate 200 in which a plurality of light emitting modules 100 are installed is installed in a cover 310. In the present embodiment, the cover 310 has a cylindrical shape, and the substrate 200 in which the plurality of light emitting modules 100 are installed is mounted in the cover 310. In this case, the cover 310 may be provided with a groove or a mounting portion that can be coupled to the substrate 200.
위에서 설명한 바와 같이 본 발명에 대한 구체적인 설명은 첨부된 도면을 참조한 실시예에 의해서 이루어졌지만, 상술한 실시예는 본 발명의 바람직한 예를 들어 설명하였을 뿐이므로, 본 발명이 상기 실시예에만 국한되는 것으로 이해돼서는 안 되며, 본 발명의 권리범위는 후술하는 청구범위 및 그 등가개념으로 이해되어야 할 것이다.As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings. However, since the above-described embodiments have only been described by way of example, the present invention is limited to the above embodiments. It should not be understood, the scope of the present invention will be understood by the claims and equivalent concepts described below.
*/ 부호의 설명* / Explanation of the sign
100: 발광모듈100: light emitting module
110: 발광소자 120: 렌즈110: light emitting element 120: lens
121: 입광부 121a: 입사면121: light incident part 121a: incident surface
123: 단차부 125: 하면123: stepped portion 125:
127: 출광부 127a, 127b: 볼록부127: light exit portion 127a, 127b: convex portion
127c: 경계부 129: 다리부127c: boundary 129: leg
200: 기판200: substrate
300: 튜브형 조명 장치 310: 커버300: tube type lighting device 310: cover

Claims (18)

  1. 기판 상에 배치된 복수의 발광소자;A plurality of light emitting elements disposed on the substrate;
    상기 복수의 발광소자의 상부에 각각 배치되며, 상기 발광소자에서 방출된 광을 분산시키는 복수의 렌즈를 포함하고,It is disposed on top of the plurality of light emitting elements, and includes a plurality of lenses for dispersing the light emitted from the light emitting element,
    상기 복수의 렌즈 각각은, 상기 발광소자에서 방출된 광이 입사되는 입광부와 입사된 광이 출광되는 출광부를 포함하며,Each of the plurality of lenses includes a light incident portion to which light emitted from the light emitting element is incident and a light exit portion to which incident light is emitted,
    상기 입광부 및 출광부의 평면 형상은 각각 장축과 단축을 가지고,The planar shape of the light incident portion and the light exit portion has a long axis and a short axis, respectively.
    상기 입광부의 장축과 상기 출광부의 장축은 서로 소정의 각도를 가지게 배치된 발광모듈.The long axis of the light incident part and the long axis of the light exit part is disposed to have a predetermined angle to each other.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 입광부의 장축과 상기 출광부의 장축은 서로 수직하게 배치된 발광모듈.The long axis of the light incident part and the long axis of the light exit part is disposed perpendicular to each other.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 렌즈는 하면에 상기 입광부를 둘러싸는 단차부가 형성된 발광모듈.The lens has a light emitting module having a stepped portion surrounding the light incident portion.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 출광부는 두 개의 볼록부와 상기 두 개의 볼록부가 중첩되는 경계부를 포함하는 발광모듈.The light emitting module includes a convex portion and a boundary portion where the two convex portions overlap.
  5. 청구항 4에 있어서,The method according to claim 4,
    상기 경계부는 단면 상 원호 형상으로 오목한 발광모듈.The boundary portion is a light emitting module concave in the shape of an arc in cross section.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 렌즈의 출광부는 장축과 단축의 길이가 1.5 내지 3 : 1의 비율을 갖는 발광모듈.The light emitting module of the lens has a long axis and a short length of 1.5 to 3: 1 ratio.
  7. 청구항 1에 있어서,The method according to claim 1,
    상기 기판에서 상기 복수의 발광소자의 상면까지의 높이는 상기 기판에서 상기 렌즈의 입광부까지의 높이보다 큰 발광모듈.And a height from the substrate to an upper surface of the plurality of light emitting devices is greater than a height from the substrate to the light incident portion of the lens.
  8. 하부에 형성되고, 발광소자에서 방출된 광이 입사되는 입광부; 및A light incident part formed at a lower side and to which light emitted from the light emitting device is incident; And
    상기 입광부로 입사된 광을 외부로 출광하는 출광부를 포함하고,It includes a light exit unit for emitting the light incident to the light incident unit to the outside,
    상기 입광부와 출광부의 평면 형상은 각각 장축과 단축을 가지며,The planar shape of the light incident part and the light exit part has a long axis and a short axis, respectively.
    상기 입광부의 장축과 상기 출광부의 장축은 서로 소정의 각도를 가지도록 형성된 렌즈.The long axis of the light incident part and the long axis of the light exit part are formed to have a predetermined angle to each other.
  9. 청구항 8에 있어서,The method according to claim 8,
    상기 입광부의 장축과 상기 출광부의 장축은 서로 수직하게 형성된 렌즈.The long axis of the light incident portion and the long axis of the light exit portion are formed perpendicular to each other.
  10. 청구항 8에 있어서,The method according to claim 8,
    상기 입광부는 오목한 형상을 가지고,The light incident portion has a concave shape,
    상기 출광부는 두 개의 볼록부와 상기 두 개의 볼록부가 중첩되는 경계부를 가지는 렌즈.And the light exit portion has a boundary portion where two convex portions and the two convex portions overlap.
  11. 청구항 10에 있어서,The method according to claim 10,
    상기 경계부는 단면 상 원호 형상으로 오목한 렌즈.And the boundary portion is concave in an arc shape in cross section.
  12. 청구항 8에 있어서,The method according to claim 8,
    상기 출광부는 장축과 단축의 길이가 1.5 내지 3 : 1의 비율을 갖는 렌즈.The light output unit has a length of 1.5 to 3: 1 in length of the long axis and short axis.
  13. 청구항 8에 있어서,The method according to claim 8,
    상기 입광부의 주변에 배치되는 복수의 다리를 더 포함하는 렌즈.The lens further comprises a plurality of legs disposed around the light incident portion.
  14. 청구항 8에 있어서,The method according to claim 8,
    상기 입광부를 둘러싸도록 배치되며, 상기 하부에서 상부 방향으로 단차진 단차부를 더 포함하는 렌즈.The lens is arranged to surround the light incident portion, and further comprises a stepped stepped from the bottom to the upper direction.
  15. 광방출면을 갖는 튜브 형상의 커버; 및A tube-shaped cover having a light emitting surface; And
    상기 커버 내에 수용되고, 복수의 발광모듈이 상기 커버의 길이 방향으로 일정한 간격으로 배치된 발광모듈 어레이를 포함하고,A light emitting module array accommodated in the cover and having a plurality of light emitting modules arranged at regular intervals in a length direction of the cover;
    상기 복수의 발광모듈 각각은,Each of the plurality of light emitting modules,
    발광소자 및 상기 발광소자의 상부에 배치되어 상기 발광소자에서 방출된 광을 분산시키는 렌즈를 포함하며,A light emitting device and a lens disposed on the light emitting device to disperse the light emitted from the light emitting device,
    상기 렌즈는 상기 발광소자에서 방출된 광이 입사되는 입광부와 입사된 광을 출광하는 출광부를 포함하고,The lens includes a light incident part to which light emitted from the light emitting device is incident and a light exit part to emit incident light,
    상기 입광부 및 출광부의 평면 형상은 각각 장축과 단축을 가지며,The planar shape of the light incident portion and the light exit portion have a long axis and a short axis, respectively.
    상기 입광부의 장축과 출광부의 장축은 서로 소정의 각도를 가지게 배치된 튜브형 조명 장치.The long axis of the light incident part and the long axis of the light exit part is disposed to have a predetermined angle to each other.
  16. 청구항 15에 있어서,The method according to claim 15,
    상기 복수의 발광모듈 간의 간격은 20mm 내지 50mm인 튜브형 조명 장치.The interval between the plurality of light emitting modules is a tubular lighting device of 20mm to 50mm.
  17. 청구항 15에 있어서, 상기 발광모듈 어레이는,The method of claim 15, wherein the light emitting module array,
    기판; 및Board; And
    상기 기판 상에 배치되며, 복수의 발광소자 및 복수의 렌즈를 포함하는 복수의 발광모듈을 포함하고,A plurality of light emitting modules disposed on the substrate and including a plurality of light emitting devices and a plurality of lenses;
    상기 커버는 상기 기판 상에 결합된 튜브형 조명 장치.And the cover is coupled onto the substrate.
  18. 청구항 15에 있어서, 상기 발광모듈 어레이는,The method of claim 15, wherein the light emitting module array,
    기판; 및Board; And
    상기 기판 상에 배치되며, 복수의 발광소자 및 복수의 렌즈를 포함하는 복수의 발광모듈을 포함하고,A plurality of light emitting modules disposed on the substrate and including a plurality of light emitting devices and a plurality of lenses;
    상기 커버는 원통 형상을 가지며, 상기 기판이 상기 원통 형상의 커버에 삽입되어 결합된 튜브형 조명 장치.And the cover has a cylindrical shape, and the substrate is inserted into and coupled to the cylindrical cover.
PCT/KR2018/002238 2017-02-24 2018-02-23 Light emitting module, lens, and tubular lighting apparatus comprising same WO2018155946A1 (en)

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US20080239722A1 (en) * 2007-04-02 2008-10-02 Ruud Lighting, Inc. Light-Directing LED Apparatus
KR20120133264A (en) * 2011-05-31 2012-12-10 삼성전자주식회사 Lens for light emitting diode, light emitting diode module comprising the same and method for manufacturing light emitting diode module using the same
KR20150012342A (en) * 2013-07-25 2015-02-04 현대중공업 주식회사 System which manages a relevant information about a ship accessory device
KR101573437B1 (en) * 2014-12-24 2015-12-01 주식회사 루멘스 Lens for light emitting device package and backlight unit
KR20160002057U (en) * 2014-12-05 2016-06-15 서울반도체 주식회사 Light emitting device and tube type lighting device in cluding the same

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US20080239722A1 (en) * 2007-04-02 2008-10-02 Ruud Lighting, Inc. Light-Directing LED Apparatus
KR20120133264A (en) * 2011-05-31 2012-12-10 삼성전자주식회사 Lens for light emitting diode, light emitting diode module comprising the same and method for manufacturing light emitting diode module using the same
KR20150012342A (en) * 2013-07-25 2015-02-04 현대중공업 주식회사 System which manages a relevant information about a ship accessory device
KR20160002057U (en) * 2014-12-05 2016-06-15 서울반도체 주식회사 Light emitting device and tube type lighting device in cluding the same
KR101573437B1 (en) * 2014-12-24 2015-12-01 주식회사 루멘스 Lens for light emitting device package and backlight unit

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