WO2010110514A1 - Appareil d'éclairage à diodes électroluminescentes en forme de barre - Google Patents

Appareil d'éclairage à diodes électroluminescentes en forme de barre Download PDF

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Publication number
WO2010110514A1
WO2010110514A1 PCT/KR2009/005836 KR2009005836W WO2010110514A1 WO 2010110514 A1 WO2010110514 A1 WO 2010110514A1 KR 2009005836 W KR2009005836 W KR 2009005836W WO 2010110514 A1 WO2010110514 A1 WO 2010110514A1
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WO
WIPO (PCT)
Prior art keywords
light emitting
module
power
emitting module
power module
Prior art date
Application number
PCT/KR2009/005836
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English (en)
Korean (ko)
Inventor
김규한
Original Assignee
주식회사 포지티브
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Application filed by 주식회사 포지티브 filed Critical 주식회사 포지티브
Publication of WO2010110514A1 publication Critical patent/WO2010110514A1/fr

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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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating 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 rod-like luminaire using a light emitting diode (LED) as a light source, and more specifically, the mechanical coupling and the electrical connection are simultaneously made by fitting each module by modularizing the internal components.
  • the present invention relates to a bar-shaped LED luminaire that is made to improve assembly and facilitates repair.
  • Types of light sources used for illumination include fluorescent lamps, incandescent lamps, neon lamps, and the like. Most of these conventional light sources consist of gas discharge tubes used by injecting gas into glass tubes.
  • the glass tube breaks and the gas inside is leaked, it may cause air pollution and may be harmful to the human body.
  • the present invention is to provide a structure that can be easily A / S even in the event of a defect or failure after installation by modularizing the components of the bar-shaped LED lighting fixture in which a plurality of LEDs are arranged.
  • Another object of the present invention is to provide a bar-shaped LED lighting fixture with improved appearance by placing the power module of the LED lighting fixture in the interior of the outer cap.
  • Another object of the present invention is to provide an LED lighting device that can prevent the discoloration of the floodlight tube due to the ultraviolet light by absorbing the ultraviolet rays emitted from the LED and the external light source.
  • the present invention receives a power supply from the electrode terminal protruding to the outside power supply module for converting and supplying the LED drive power;
  • a light emitting module electrically connected to the power module and having a plurality of LEDs;
  • a heat sink module in close contact with the light emitting module to absorb and release heat emitted from the light emitting module; Slidingly coupled to the heat sink module, ultraviolet light is absorbed or blocked, visible light passes through, the concave-convex portion for light scattering is formed continuously in the inner side, and having a support rib on the inner side to prevent the top departure of the light emitting module Floodlight tube;
  • an outer cap surrounding the outside so that the power module is not exposed and coupled to both sides of the floodlight tube, wherein the power module has a connection socket, and the light emitting module is coupled to the connection socket.
  • a bar-type LED lighting device characterized in that the coupling part is inserted into the connection socket, the power module and the light emitting module is mechanically connected and electrically connected at
  • the light emitting module is divided into a plurality of, each light emitting module is provided with a hydrogen ket and a cowcket on the interconnected surface, the hydrogen ket and the cowcket is mutually coupled and mechanically connected and electrically connected at the same time. desirable.
  • the bar-shaped LED according to the present invention improves the assembly by modularizing each component, it is possible to replace only the module in which the problem occurs even in the event of failure or defects, which brings the effect that the repair can be made quickly and simply.
  • the power module is accommodated in the outer cap so that the power module is not exposed to the outside, the appearance is beautiful, to impart ultraviolet blocking and absorption function to the floodlight tube so that the ultraviolet ray is not emitted and the light tube is not discolored. It also brings effects.
  • FIG. 1 is a perspective view showing the appearance of a bar-shaped LED lighting fixture according to the present invention
  • FIG. 2 is an exploded perspective view of a bar-shaped LED lighting device according to a first embodiment of the present invention
  • FIG. 3 is a partially enlarged view showing a connection structure of a power module and a light emitting module according to a first embodiment of the present invention
  • FIG. 4 is a partially enlarged view showing a connection structure between light emitting modules according to a first embodiment of the present invention
  • FIG. 5 is a cross-sectional view showing a coupling structure of a flood tube and a heat sink module according to a first embodiment of the present invention
  • FIG. 6 is a perspective view showing a connection structure of a light emitting module according to a second embodiment of the present invention.
  • FIG. 1 is a perspective view showing the appearance of a bar-shaped LED lighting device according to the present invention.
  • the appearance of the bar-shaped LED lighting fixture has a form similar to that of a conventional fluorescent lamp.
  • the purpose is to reduce the objection to the completely new shape by having an appearance familiar to the eyes, and also to share the auxiliary parts used in the conventional fluorescent lamps, such as cases, reflectors, and sockets. will be.
  • the bar-shaped LED lighting device 10 has a circular cross section and is formed in a long bar shape.
  • the length may have sizes corresponding to the length of a conventional fluorescent lamp and may be manufactured to an arbitrary length as needed.
  • the bar-shaped LED lighting device 10 has an outer cap 12 formed of an opaque material at both ends thereof, and is formed of a material capable of diffusing and transmitting light in a central portion between the outer caps 12.
  • a light transmitting tube 14 is formed.
  • the outer cap 12 and the floodlight tube 14 are preferably coupled by sealing with epoxy molding.
  • a pair of electrode terminals 12a are formed in the outer cap 12.
  • the electrode terminal 12a is preferably formed to have the same specifications as the electrode terminal of a fluorescent lamp, and has a structure that can be connected to a conventional fluorescent lamp socket.
  • the electrode terminal 12a is connected to a socket, and is formed as a conductor to receive AC power.
  • the electrode terminal 12a is connected to a power module accommodated in the outer cap 12 through the outer cap 12.
  • the LED is a light source is not disposed inside the outer cap 12, the power module is disposed, it is preferable that the outer cap 12 is formed of an opaque material so that the internal parts are not visible from the outside.
  • the outer cap 12 is formed in a short form so that the power module protrudes to the outside of the outer cap 12, the present invention, the power module is completely accommodated inside the outer cap 12, the power module is It characterized in that to form a long length of the outer cap 12 so as not to be exposed or visible to the outside.
  • the outer cap 12 may be formed of a metallic material as in a conventional fluorescent lamp, but may be made of an opaque synthetic resin material.
  • the light emitting module in which a plurality of LEDs as light sources are arranged is disposed inside the light transmitting tube 14, and the light transmitting tube 14 is preferably made of a transparent or translucent material having light transmitting properties. In addition, it is more preferable that a concave-convex shape is provided inside the floodlight tube 14 to diffuse and scatter light.
  • FIG. 2 is an exploded perspective view of a bar-shaped LED lighting device according to a first embodiment of the present invention.
  • the rod-shaped LED lighting device is a power module 20 which is sealed with epoxy in the interior of the outer cap 12, a plurality of LED (L) on the surface of the substrate
  • a heat sink module 24 corresponding to the lengths of the light emitting modules 22a and 22b and the light emitting modules 22a and 22b and arranged in close contact with the light emitting modules 22a and 22b to absorb and dissipate heat; Sliding coupled to the heat sink module 24 to accommodate the modules (22a, 22b), and includes a light-emitting tube 14 coupled to the outer cap 12 in a state coupled to the heat sink module 24.
  • the power module 20 converts the power supplied from the electrode terminal 12a into a power suitable for driving the LED L provided in the light emitting modules 22a and 22b.
  • the first method is to convert the power passed through the ballast into a power suitable for driving the LED so that it can be used as it is in the fluorescent lamp case with the conventional ballast.
  • the second is a power supply suitable for driving the LED by directly receiving AC power without the ballast. This is how you convert it.
  • the power supply module 20 is preferably installed on both exterior caps 12 for the distribution of the symmetrical appearance and weight of the left and right of the entire bar-shaped LED lighting fixtures, respectively.
  • the power module 20 may be formed only on the outer cap 12 of one side.
  • the power module 20 is preferably sealed with an epoxy to the outer cap 12. This is to prevent failure of the power module 20 by preventing external moisture or foreign matter from penetrating into the power module 20 side.
  • Each power module 20, in which the power module 20 is separated and installed on both sides, may be in the form of individually performing power conversion, and as an electrical device, is separated on both sides to perform one power conversion function. It may be formed.
  • the power module 20 on one side is formed in such a manner as to supply power only to the light emitting module 22a on one side, or the power module 20 on both sides to supply power to the entire light emitting modules 22a and 22b. It can be formed as.
  • the LED lighting device is characterized in that the light emitting modules 22a and 22b are formed of a plurality of substrates so that the light emitting modules 22a and 22b are detachable from each other.
  • the first embodiment two light emitting modules 22a and 22b are formed. Three or more may be formed in a combined form.
  • the lifetime of a normal LED is known to reach 10 years, but in the case of a defective product, the lifetime may be extremely short.
  • the entire light emitting module is formed of one substrate, even if a defect occurs in one or two LEDs, the entire substrate needs to be replaced, so excessive cost is required for repair and resources may be wasted.
  • the present invention provides a structure that allows the light emitting modules to be connected to each other to be connected to each other when a bad LED occurs, to separate the connected light emitting module and to replace only the light emitting module having a failure.
  • a plurality of LEDs (L) are arranged on the front surface of the light emitting modules (22a, 22b), the back is in close contact with the heat sink module (24).
  • the light emitting modules 22a and 22b may be directly coupled to the heat sink module 24, or the light emitting modules 22a and 22b may be in close contact with the heat sink module 24 by a light transmitting tube.
  • the heat sink module 24 absorbs and releases the heat generated by the LED (L).
  • the heat sink module 24 closely adheres to the rear surfaces of the light emitting modules 22a and 22b, so that the heat generated by the light emitting modules 22a and 22b is well received. It is formed to be delivered.
  • heat sink module 24 serves to support the entire bar-shaped LED lighting device (10).
  • the heat sink module 24 is preferably made of lightweight aluminum or aluminum alloy so as to satisfy both the function of heat transfer and the function of supporting the whole.
  • One heat sink module 24 may be formed to correspond to the entire length of the bar-shaped LED light source device, or may be formed in a form that is assembled by connecting those formed in a predetermined length such as light emitting modules 22a and 22b in the longitudinal direction. have.
  • the heat sink module 24 does not require electrical connection, the heat sink module 24 is assembled to be mutually mechanically fastened.
  • the heat sink module 24 Since the heat sink module 24 is made of a conductive metal material, but does not play an electrical role, the heat sink module 24 forms or insulates an insulating layer on the contact portion so as not to be energized with the light emitting modules 22a and 22b or the power module 20.
  • the film can be attached.
  • the floodlight tube 14 is slidingly coupled to the heat sink module 24 and accommodates the light emitting modules 22a and 22b therein. And both sides of the light pipe 14 is coupled to the outer cap 12, the light pipe 14 is preferably coupled to the outer cap 12 and the epoxy molding to seal the inside.
  • the floodlight tube 14 optically diffuses visible light emitted from the LED, which is a light source, to realize uniform brightness as a whole, and absorbs or blocks ultraviolet rays emitted from the LED to prevent the ultraviolet rays from leaking to the outside. It is preferable that the light-transmitting tube 14 itself is not discolored by external ultraviolet rays. In addition, it is preferable to give a shape capable of scattering and diffusing light on the inner surface of the light emitting tube 14 so as to uniformly diffuse the light emitted from the LED which is the point light source.
  • the floodlight tube 14 is made of a transparent synthetic resin as a base resin, and a diffusion agent for performing the light diffusion function as described above, and an ultraviolet absorber and a sunscreen agent for absorbing or blocking ultraviolet rays as additives. It is preferably made of a mixed material.
  • the light transmitting tube 14 may be made of a synthetic resin of a transparent material and form a coating layer having a diffusion function and an ultraviolet blocking function on its surface to perform the function as described above.
  • FIG 3 is a partially enlarged view illustrating a connection structure of a power module and a light emitting module according to a first embodiment of the present invention.
  • the power module 20 has a connection socket 34 on the surface that is connected to the light emitting module 22b, the light emitting module 22b is coupled to the connection socket 34 (32) is formed.
  • the LED is arranged on the surface of the light emitting module (22b), the coupling portion 32 is inserted into the connection socket 34 is formed integrally with the substrate and has a narrower width than the other parts. That is, it is part of the narrow board
  • the power supply module 20 and the light emitting module 22b are mechanically coupled and electrically connected by the coupling portion 32 fitted to the connection socket 34.
  • the substrate By inserting the substrate into the socket, it is mechanically fixed and electrically connected.
  • This coupling structure can simplify the assembly process, and easy disassembly and recombination brings excellent workability even during A / S.
  • FIG. 4 is a partially enlarged view illustrating a connection structure between light emitting modules according to a first embodiment of the present invention.
  • the light emitting modules 22a and 22b are provided with hydrogen sockets 42a and 42b and cowckets 44a and 44b at opposite ends to be fitted to the power supply module 20.
  • the hydrogen ketets 42a and 42b and the cowckets 44a and 44b are composed of conductors electrically connected to the LED circuits of the light emitting modules 22a and 22b.
  • Hydroquettes 42a and 42b are formed in the shape of a rod-like protrusion, and the cowckets 44a and 44b are formed in a cylindrical shape that can accommodate the protrusions.
  • FIG. 5 is a cross-sectional view showing a coupling structure of a flood tube and a heat sink module according to a first embodiment of the present invention.
  • the floodlight tube 14 has a cylindrical shape with a part cut out, and has a coupling rib 54 protruding inwardly of a circle at its end, and the coupling rib 54 has a coupling rib 54 at an end thereof.
  • the floodlight tube 14 has an uneven portion 14a for light scattering on the inner side.
  • Concave-convex portion 14a is composed of a peak portion and a valley formed in parallel along the longitudinal direction of the floodlight tube 14 serves to scatter and diffuse the light emitted from the LED.
  • a pair of support ribs 52 are formed inside the floodlight tube 14.
  • the support rib 52 protrudes toward the center of the floodlight tube, and supports the upper surface of the light emitting module 22a to fix the light emitting module 22a in close contact with the heat sink module 24.
  • the light emitting module 22a may be coupled to the heat sink module 24 using a fastening member such as a separate bolt, or may be attached using an adhesive or an adhesive.
  • the coupling rib 54 and the separation prevention protrusion 54a are inserted into the heat sink module 24, and both sides of the heat sink module 24 correspond to the coupling rib 54 having the separation prevention protrusion 54a formed therein.
  • a slit groove 56 having a shape is formed.
  • the separation preventing protrusion 54a is to prevent the coupling rib 54 from falling to both sides.
  • the cylindrical tube is formed.
  • FIG. 6 is a perspective view showing a connection structure of a light emitting module according to a second embodiment of the present invention.
  • three light emitting modules 22a, 22b, and 22c are connected to each other.
  • the coupling portion is formed on one side, and the two light emitting modules 22a and 22b formed by pairing the hydrogen rockets 42a and 42b and the cowckets 44a and 44b on the other side, and both sides of the hydrogen rocket 42c. ) And one light emitting module 22c formed by a pair of cowckets 44c are combined.
  • the light emitting modules 22a and 22b of both sides are coupled to the power module 20 as described above, and each of the light emitting modules 22a, 22b and 22c is coupled to each other by a male and female socket. Mechanical coupling and electrical connection are made.
  • one light emitting module 22c having male and female sockets formed on both sides is added, and in the case of combining more than one light emitting module 22c, a light emitting module 22c of the same type can be implemented. Can be.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

La présente invention a trait à un appareil d'éclairage à diodes électroluminescentes en forme de barre comprenant : un module d'alimentation qui reçoit de l'énergie provenant d'une borne d'électrode faisant saillie vers l'extérieur et qui convertit l'énergie en énergie d'attaque de diode électroluminescente en vue de fournir l'énergie convertie ; un module électroluminescent qui est électriquement connecté au module d'alimentation et qui est constitué de plusieurs diodes électroluminescentes ; un module de dissipateur thermique qui absorbe et libère de la chaleur émise à partir du module électroluminescent et qui est en contact avec le module électroluminescent ; un tube d'éclairage qui est couplé de manière coulissante au module de dissipateur thermique, qui absorbe ou bloque les rayons ultraviolets tout en laissant passer la lumière visible, qui est équipé de parties irrégulières qui sont formées consécutivement sur le côté intérieur pour la diffusion de la lumière et qui est doté d'une nervure d'appui permettant d'éviter toute séparation vers le haut du module électroluminescent en étant disposée sur le côté intérieur ; et un couvercle extérieur qui recouvre la partie extérieure afin d'empêcher que le module d'alimentation ne soit exposé et qui est couplé aux deux côtés du tube d'éclairage ; lequel module d'alimentation est pourvu d'un support pour connexion et lequel module électroluminescent est pourvu d'une partie de combinaison insérée dans le support pour connexion, ce qui permet au module d'alimentation et au module électroluminescent d'être mécaniquement connectés ainsi que d'être électriquement couplés grâce à l'insertion de la partie de combinaison dans le support pour connexion.
PCT/KR2009/005836 2009-03-23 2009-10-12 Appareil d'éclairage à diodes électroluminescentes en forme de barre WO2010110514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090024615A KR100919840B1 (ko) 2009-03-23 2009-03-23 막대형 ｌｅｄ 조명기구
KR10-2009-0024615 2009-03-23

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WO2010110514A1 true WO2010110514A1 (fr) 2010-09-30

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WO2018016918A1 (fr) * 2016-07-22 2018-01-25 서울바이오시스 주식회사 Dispositif d'éclairage à led en forme de tube
CN109506217A (zh) * 2018-12-13 2019-03-22 欧普照明股份有限公司 一种光源转接模组及光源组件及照明灯具
GB2568602A (en) * 2017-10-31 2019-05-22 Rentokil Initial 1927 Plc A lamp for an insect light trap, and an insect light trap
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US10935192B2 (en) 2016-07-22 2021-03-02 Seoul Viosys Co., Ltd. Tube-shaped LED lighting device
CN114650634A (zh) * 2022-03-02 2022-06-21 中国科学院半导体研究所 紫外led模组

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US8360607B2 (en) 2010-02-17 2013-01-29 Next Lighting Corp. Lighting unit with heat-dissipating chimney
KR100973331B1 (ko) * 2010-02-18 2010-07-30 주식회사 명신전자 조명용 등기구 장치
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KR101168684B1 (ko) 2010-04-27 2012-07-30 주식회사 쎄슬 튜브타입 엘이디 조명등 구조
US8454193B2 (en) * 2010-07-08 2013-06-04 Ilumisys, Inc. Independent modules for LED fluorescent light tube replacement
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KR20130037945A (ko) * 2011-10-07 2013-04-17 삼성전자주식회사 조명장치
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KR101231078B1 (ko) 2012-07-26 2013-02-07 주식회사 쓰리에스그룹 메탈 ｐｃｂ 기판을 갖는 ｌｅｄ 형광등
KR101293820B1 (ko) 2012-12-31 2013-08-16 최상교 막대형 엘이디 조명등
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