WO2015137697A1 - Équipement d'éclairage à del de type lampe fluorescente, et procédé et dispositif pour sa fabrication - Google Patents

Équipement d'éclairage à del de type lampe fluorescente, et procédé et dispositif pour sa fabrication Download PDF

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Publication number
WO2015137697A1
WO2015137697A1 PCT/KR2015/002295 KR2015002295W WO2015137697A1 WO 2015137697 A1 WO2015137697 A1 WO 2015137697A1 KR 2015002295 W KR2015002295 W KR 2015002295W WO 2015137697 A1 WO2015137697 A1 WO 2015137697A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
substrate
seating surface
led lighting
fluorescent lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/002295
Other languages
English (en)
Korean (ko)
Inventor
이태우
김덕용
한종주
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KMW Inc
Original Assignee
KMW Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020140085325A external-priority patent/KR20150106800A/ko
Application filed by KMW Inc filed Critical KMW Inc
Publication of WO2015137697A1 publication Critical patent/WO2015137697A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/005—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
    • 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
    • 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 fluorescent lamp LED lighting fixture and a method and apparatus for manufacturing the same, and more particularly, to reduce the weight, increase productivity, and improve the heat dissipation and light emission characteristics, and It relates to a manufacturing method and a manufacturing apparatus.
  • LEDs As light sources have been developed in consideration of problems such as high power consumption and short lifespan of conventional light source means.
  • the life span of the lighting fixture is significantly increased compared to the existing light source, and thus the amount of waste emitted is significantly reduced to prevent environmental pollution, and it is expected to contribute to energy saving due to low power consumption. have.
  • fluorescent LED lamps have been proposed to replace existing fluorescent lamps.
  • conventional fluorescent LED lighting fixtures have a problem in that the weight is heavier than conventional fluorescent lamps, including a metal heat sink for heat dissipation, and the manufacturing cost is complicated because the structure is complicated and the assembly process is complicated.
  • Patent No. 10-0907310 registered on July 3, 2009, fluorescent LED lamp
  • Patent No. 10-1300890 registered on August 21, 2013, LED fluorescent lamp with excellent heat emission and light source diffusion
  • Various types of fluorescent LEDs have been proposed.
  • 1 and 2 are cross-sectional views of conventional fluorescent lamps, respectively.
  • a conventional fluorescent lamp type LED having the structure shown in FIG. 1 includes a semi-cylindrical metal heat sink 1, a substrate 2 mounted with an LED 3 fixed to the bottom of the heat sink 1, and It comprises a semi-cylindrical cover portion (4) having both sides coupled to the metal heat sink (1).
  • the metal heat sink 1 In the central portion of the metal heat sink 1 is provided with a coupling hole 5 to which the plug portion coupled to the luminaire is coupled.
  • Such a structure uses a metal heat sink 1 to efficiently dissipate heat generated by the LED 3, but is heavier than conventional fluorescent lamps by using the metal heat sink 1. There is this.
  • Japan where there are many earthquakes, the upper limit of the weight of lighting fixtures installed on the ceiling is strictly limited, and it is stated that the human body is not damaged by the fall of the lighting fixture that can occur.
  • a fluorescent lamp type LED lighting fixture that meets this standard has a problem that is difficult.
  • FIG. 2 is a cross-sectional view of an example of not using a metal heat sink to reduce weight.
  • the tube 2 includes a cylindrical tube part 6 and a substrate 2 mounted with an LED 3 inserted into and fixed to a guide groove 7 provided inside the tube part 6.
  • This configuration is a structure in which the substrate (2) and the LED (3) is fixed by slidingly coupled to the center portion of the tube portion 6, the heat generated from the LED (3) is not easy to discharge the life of the LED (3) There was a problem that can shorten.
  • the conventional fluorescent lamp type LED lighting fixture of the structure shown in Figures 1 and 2 because the LED 3 is located in the center portion of the circular structure in the cross-sectional view, the light emission characteristics are not emitted from the front surface, like conventional fluorescent lamps, Since light is emitted only from the lower side with respect to the position of the substrate 2, the light is emitted only through the lower hemisphere on the cross section, which has a problem of providing awkward light distribution to those who are familiar with existing fluorescent lamps.
  • the problem to be solved by the present invention in view of the above problems is to provide a fluorescent lamp type LED lighting fixture, and a method and a manufacturing apparatus that can innovatively reduce the weight and manufacturing cost.
  • Another problem to be solved by the present invention is to provide a fluorescent lamp type LED lighting fixture and a manufacturing method and a manufacturing apparatus that can increase the productivity by automating the assembly process, and can reduce the manufacturing cost.
  • Another problem to be solved by the present invention is to provide a fluorescent lamp type LED lighting fixture, a method and a manufacturing apparatus that can completely replace the existing fluorescent lamp by making the light distribution is made in the lateral direction as well as downward.
  • the present invention supplies a light and inexpensive fluorescent type LED lighting fixture to the market, and promotes the commercialization of the LED lighting fixture to activate the market in the LED lighting field, which can help economic development and its fluorescent LED lighting fixture and its manufacture
  • the present invention provides a method and a manufacturing apparatus.
  • the fluorescent lamp type LED lighting device of the present invention for solving the above problems is a cylindrical tube having a flat seating surface, a substrate fused to the seating surface of the tube with an intermediate layer, and in the opposite direction to the seating surface A plurality of LEDs mounted on the substrate and a plug portion coupled to both ends of the tube.
  • the method of manufacturing a fluorescent LED light fixture of the present invention a) preparing a tube having a flat seating surface on a part, b) preparing a substrate on which the LED is mounted, c) the LED of the substrate is not formed Adhering the intermediate layer to an undesired surface, d) inserting the substrate into the tube such that the intermediate layer contacts the seating surface, and then fusion bonding the substrate to the seating surface by ultrasonic welding; e ) Coupling the plugs to both ends of the tube.
  • the apparatus for manufacturing a fluorescent LED light fixture of the present invention is inserted into a tube in which a seating surface is formed in a part, and closes the seating surface and the intermediate layer formed on the substrate inserted into the tube by injection of air during ultrasonic welding.
  • a close contact with the base material, the seat is inserted into the tube and the mounting surface is fixed to the upper surface, the ultrasonic device for generating an ultrasonic wave, and the ultrasonic wave of the ultrasonic device in the outside of the mounting surface of the tube
  • a horn for supplying the seating surface of the tube and the intermediate layer to each other by fusion.
  • the present invention has the effect of increasing the heat dissipation effect while reducing the weight by fusion of the substrate mounted with the LED on the inside of the tube with high adhesion even without using a metal heat radiation fin.
  • the present invention reduces the manufacturing cost by eliminating the use of an assembly process of inserting or fixing the substrate by fusion bonding the substrate to the inside of the tube, and reduces the manufacturing cost because it does not use a relatively expensive metal heat sink. It can be effective.
  • the present invention allows the light emitted through almost the entire tube to prevent users who are familiar with the illumination of the existing fluorescent light to feel visual heterogeneity, and to increase the amount of light upward compared to the conventional fluorescent LED lighting fixtures It can be effective.
  • the present invention has the effect of automating the manufacturing process, by uniformly closely contacting the seating surface of the tube and the substrate to improve the reliability of ultrasonic welding.
  • 1 and 2 is a cross-sectional view of a conventional fluorescent type LED lighting fixture.
  • FIG 3 is a perspective view of a fluorescent lamp LED lighting fixture according to a preferred embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the A-A direction in FIG. 3.
  • FIG. 5 is a cross-sectional view of a fluorescent lamp LED lighting fixture according to another embodiment of the present invention.
  • Figure 6 is a block diagram of a fluorescent type LED lighting device manufacturing apparatus of the present invention.
  • FIG. 7 is a detailed cross-sectional view of a jig unit in FIG. 6.
  • FIG. 8 is a cross-sectional view for explaining the operation of the adhesion substrate of the present invention.
  • FIG. 9 is an exemplary configuration diagram of a horn in FIG. 6.
  • Tube 11 seating surface
  • Substrate 31 LED
  • adhesion base 110 metal rod
  • Figure 3 is a perspective view of a fluorescent type LED lighting fixture according to a preferred embodiment of the present invention
  • Figure 4 is a cross-sectional view of the A-A in FIG.
  • the fluorescent lamp type LED lighting device according to a preferred embodiment of the present invention, the tube 10 of the overall cylindrical structure, having a flat seating surface 11 with a predetermined width, and A substrate 30 that is fused to the seating surface of the tube 10 with an intermediate layer 20 interposed therebetween, and is mounted on the board 30 and opposite to the seating surface 11. It includes a plurality of LEDs 31 for emitting light and a plug portion 40 is connected to both ends of the tube 10 and supplies power to the substrate 30.
  • both ends of the tube 10 are made of polycarbonate (PC) injection molding, and have a tubular (cylindrical) structure.
  • the part facing the ceiling at the time of installation is a flat surface with respect to the whole longitudinal direction by a predetermined width, and the inside of this flat surface becomes the seating surface 11 by which the board
  • the width of the seating surface 11 is preferably the same as the width of the substrate 30.
  • a projection 12 is provided at the boundary between the flat surface, which is the seating surface 11, and the tube 10, which is circular in cross section other than the seating surface 11, and the protrusion 12 is provided on the side surface of the substrate 30. In close contact with each other, a structure for stably supporting the substrate 30 may be considered.
  • the intermediate layer 20 is fused between the seating surface 11 and the substrate 30.
  • Tube 10 made of PC material and substrate 30 made of FR4 have difficulty in ultrasonic welding, and an ultrasonic layer is disposed between the substrate 30 and the seating surface 11 of the tube 10. Ultrasonic fusion of the substrate 30 to the seating surface 11 of the tube 10 through fusion.
  • Ultrasonic fusion forms a bonding relationship at the molecular level, and the heterogeneous materials separated from each other can be processed to have a higher degree of adhesion than bonding or fastening.
  • the substrate 30 and the tube 10 are not separated from each other, and when a force is applied, a portion of the substrate 30 is broken or torn so that a phenomenon occurs.
  • the intermediate layer of solid epoxy is formed on the surface of the substrate 30 on which the LED 31 is not formed.
  • the intermediate layer 20 is first bonded to the substrate 30 by heating in the heat treatment furnace while the 20 is in contact.
  • the substrate 30 to which the intermediate layer 20 is bonded is transferred to the ultrasonic fusion apparatus, and then bonded to the tube 10 that is injection molded in advance. At this time, the intermediate layer 20 adhered to the substrate 30 comes into contact with the seating surface 11 of the tube 10.
  • the boundary between the substrate 30 and the intermediate layer 20 and the boundary between the intermediate layer 20 and the seating surface 11 are fused by ultrasonic welding, and the substrate 30 is fused and fixed to the seating surface 11. Let's do it.
  • Ultrasonic welding can be performed under the conditions of 5656kpa pneumatic pressure, Trigger Force 120N, Weld Time 0.15sec, Hold Time 0.5sec, Amplitude 100%.
  • the optimum welding condition can be made by varying each condition such as 30kpa, welding time 0.7sec, frequency 16,000 times / min.
  • the present invention can omit a bonding process such as bonding of a heat sink and a substrate and bonding of a cover.
  • the plug portion 40 separately manufactured is inserted into both ends of the tube 10, so that a wire for supplying power to the substrate 30 is connected to one side of the plug portion 40.
  • the plug portion 40 and the tube 10 may be mutually coupled to each other using bolts, and the plug portion 40 and the tube 10 may be reattached.
  • Ultrasonic fusion enables firm bonding.
  • the plug portion 40 and the tube 10 may be fused in a state in which an intermediate layer such as a solid epoxy is provided between the plug portion 40 and the tube 10.
  • the fluorescent lamp type LED lighting device of the present invention configured as described above has a width of the seating portion 11 smaller than the maximum diameter of the tube 10, and the LEDs 31 mounted on the substrate 30 may include a tube ( 10) is configured not to be in the center.
  • the light emitted from the LED 31 by such a configuration may be emitted through the surface of all other tubes 10 except for a part of the rear side tube 10 of the substrate 30, and the light distribution similar to a conventional fluorescent lamp Will have
  • This light distribution characteristic unlike the form of the conventional fluorescent LED lighting fixtures emit light through the lower hemisphere of the cylindrical tube can emit light from the side and upwards, more users who are familiar with the conventional light distribution of fluorescent lamps It is possible to provide natural lighting.
  • FIG. 5 is a cross-sectional view of a fluorescent lamp LED lighting fixture according to another embodiment of the present invention.
  • the fluorescent type LED lighting fixture according to another embodiment of the present invention further includes a reflector plate 50 in the example of the configuration described in detail with reference to FIG. 4.
  • the reflecting plate 50 is fixed to the opposite sides of the substrate 30 by bonding or the like, and the material may be metal or synthetic resin.
  • the reflector 50 prevents the light emission angle of one LED 31 from about 120 degrees, and prevents the light emitted from the side or upward light described above, and condenses the light to the lower side, so that it is brighter in the direct direction as needed. Can provide light of illuminance.
  • the reflective plate 50 may be inserted into a tube after the substrate 30 is fused to the seating surface 11, or the reflective plate 50 may be inserted into the tube after fixing the reflective plate 50 along the longitudinal edge of the substrate 30. 30) and the mounting surface 11 can be manufactured by fusion.
  • the lower end of the reflecting plate 50 is horizontal with the ground and the seating surface 11 as shown in FIG. 5 at a maximum, and the distance between the lower ends of both sides of the reflecting plate 50 is the diameter of the inner diameter of the tube 10.
  • the point up to the same length is limited to the longest length in the height direction of the reflecting plate 10.
  • the present invention provides a state in which the substrate 30 and the tube 10 are completely adhered to each other to provide a state in which the heat is easily released, thereby reducing the weight by using a separate metal heat sink and improving the bondability. It becomes possible.
  • the present invention may be manufactured by a method of fusion bonding of the substrate 30 and the tube 10, and a separate manufacturing apparatus is used to improve the reliability of such fabrication.
  • Figure 6 is a block diagram of a manufacturing apparatus of a fluorescent lamp LED lighting fixture according to an embodiment of the present invention.
  • the intermediate layer 20 attached to the rear surface of the substrate 30 in the state in which the substrate 30 is inserted into the tube 10 is formed in the tube 10.
  • the seating surface 200 which is seated so that the seating surface 11 side of the inserted tube 10 is upward, generates an ultrasonic wave, boosts the ultrasonic wave to be suitable for fusion, and the longitudinal direction of the seating table 200.
  • a plurality of ultrasonic device units 300 disposed along the ultrasonic wave unit 300 are coupled to each of the ultrasonic device units 300 to apply ultrasonic waves to the seating surface side of the tube 10 so that the substrate 30 is placed on the seating surface of the tube 10.
  • the intermediate layer 20 is inserted into the tube 10 with the intermediate layer 20 attached to the rear surface of the substrate 30.
  • the insertion of the substrate 30 can be inserted by the robot alone, the insertion direction is such that the intermediate layer 20 is a direction toward the seating surface of the tube 10.
  • the substrate 30 may be inserted into the tube 10 together with the adhesion substrate 100 by the robot in contact with the adhesion substrate 100.
  • the insertion direction is the same.
  • the adhesion substrate 100 is increased in volume up and down by the injection of air, so that the intermediate layer 20 attached to the rear surface of the substrate 30 can be evenly adhered to the seating surface 11 of the tube 10. Can be used.
  • FIG 7 is a cross-sectional configuration diagram of one embodiment of the adhesion substrate 100
  • Figure 8 is a cross-sectional configuration for explaining the operation of the adhesion substrate.
  • the close contact base 100 is a hollow metal rod 110 and the metal rod 110 in a direction opposite to the seating surface 11 when the metal rod 110 is inserted into the tube 10.
  • Slit groove 120 provided along the length of the 110 and the nozzle 131 is provided on the side of the metal rod 110 to inject air into the hollow portion of the metal rod 110, or to discharge the air of the hollow portion
  • the metal rod 110 The substrate 30 is moved upward to be in close contact with the seating surface 11, and when the air of the hollow portion is discharged to the outside through the nozzle unit 130, the elastic plate 140 is restored to its original position.
  • the structure of the close contact substrate 100 can be easily inserted into the tube 10 together with the substrate 30, the substrate 30, the intermediate layer 20 attached to the back of the substrate 30, the tube (10) to be uniformly in close contact with the mounting surface 11 as a whole.
  • the diameter of the close contact base 100 is the diameter of the hollow portion of the tube 10 in order to prevent the occurrence of jams during insertion It should be smaller than that, and in the ultrasonic fusion process to be described later, the diameter of the adhesion substrate 100 should be about the same size as the diameter of the hollow portion of the tube 10 so that the substrate 30 may be closely adhered to the seating surface 11 to be fused. This can happen in all aspects.
  • the adhesion substrate 100 includes an elastic plate 140 protruding or restoring through the slit groove 120 according to the injection or discharge of air, such that the adhesion substrate 100 includes the tube 10. May cause a difference in the diameter at the time of insertion into the diameter and the diameter at the time of welding.
  • FIG. 8 (a) is a state before the air is injected through the nozzle unit 130
  • Figure 8 (b) is the air is injected through the nozzle unit 130
  • the elastic plate 140 is a slit groove
  • the intermediate layer 20 provided on the back surface of the substrate 30 is brought into close contact with the seating surface 11 by expanding the metal rod 110 upward while being inflated to the outside of the 120 and being in contact with the inside of the tube 10. .
  • the tube 10 is seated on the seating table 200, and air is injected through the nozzle part 130 to provide a substrate.
  • the intermediate layer 20 attached to the back of the 30 is brought into close contact with the seating surface 11 of the tube 10.
  • the plurality of ultrasonic device units 300 are operated to fuse the intermediate layer 20 and the seating surface 11 in close contact with each other.
  • the ultrasonic apparatus units 300 operate all at the same time to fusion the entire intermediate layer 20 and the seating surface 11, or sequentially operate in order to closely contact some surfaces of the middle layer 20 and the seating surface 11 in sequence. By fusion, the whole can be fused.
  • the reason why the ultrasonic device unit 300 is used in plural is that the length of the fluorescent LED light fixture according to the present invention is long, and the output of the ultrasonic device 300 is insufficient to fuse the entire fluorescent LED light fixture. Because.
  • the seating stand 200 may be movable, and after the fusion is partially fused, the fused portion may be moved so that the fused portion does not overlap.
  • the horn 400 should have a shape suitable for fusion of the seating surface 11 and the intermediate layer 20 of the tube 10.
  • FIG. 9 is a configuration diagram of a horn 400 applied to the present invention.
  • the horn 400 has a rectangular upper surface 410 mounted to the ultrasonic apparatus 300.
  • the bottom surface 430 has a concave curved surface 440 formed on the lower side of the front surface and the rear surface so as to have a shorter front and rear length than the upper surface 410.
  • a bottom groove 450 is provided in the longitudinal direction at the center of the bottom surface 430.
  • the through hole 420 is provided on the front and rear sides of the horn 400 so as to be vibrated by ultrasonic waves.
  • the horn 400 having such a structure may be considered to be designed in consideration of the size of the booster of the ultrasonic apparatus 300 and the width of the seating surface 11, which is a fusion surface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention porte sur un équipement d'éclairage à DEL de type lampe fluorescente, et sur un procédé et un dispositif de fabrication de ce dernier, et la présente invention comprend : un tube cylindrique ayant une surface de montage plate ; un substrat qui est fixé par fusion sur la surface de montage du tube par positionnement d'une couche intermédiaire entre ces derniers ; une pluralité de DEL montées sur le substrat qui est dans la direction opposée de la surface de montage ; et une unité de fiche couplée aux deux extrémités du tube. La présente invention fournit les avantages de réduire le poids et d'augmenter un effet de rayonnement en permettant à un substrat ayant des DELS montées sur ce dernier d'être fixé par fusion sur le côté interne d'un tube par une adhérence élevée, même sans utiliser une ailette de rayonnement métallique.
PCT/KR2015/002295 2014-03-11 2015-03-10 Équipement d'éclairage à del de type lampe fluorescente, et procédé et dispositif pour sa fabrication Ceased WO2015137697A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20140028449 2014-03-11
KR10-2014-0028449 2014-03-11
KR1020140085325A KR20150106800A (ko) 2014-03-11 2014-07-08 형광등형 엘이디 조명기구와 그 제조방법 및 제조장치
KR10-2014-0085325 2014-07-08

Publications (1)

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WO2015137697A1 true WO2015137697A1 (fr) 2015-09-17

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PCT/KR2015/002295 Ceased WO2015137697A1 (fr) 2014-03-11 2015-03-10 Équipement d'éclairage à del de type lampe fluorescente, et procédé et dispositif pour sa fabrication

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090200950A1 (en) * 2006-06-12 2009-08-13 Akj Inventions V/Allan Krough Jensen Tubular led light source
US20110156591A1 (en) * 2009-12-31 2011-06-30 Unistar Opto Corporation Tubeless light-emitting diode based lighting device
KR20110132198A (ko) * 2010-06-01 2011-12-07 이억기 발광 모듈 및 이를 갖는 조명 장치
KR101129707B1 (ko) * 2011-10-26 2012-03-28 정기석 형광등 타입의 엘이디 조명장치 및 그 제조방법
KR20140011783A (ko) * 2012-07-19 2014-01-29 파워젠 주식회사 Ｌｅｄ조명장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090200950A1 (en) * 2006-06-12 2009-08-13 Akj Inventions V/Allan Krough Jensen Tubular led light source
US20110156591A1 (en) * 2009-12-31 2011-06-30 Unistar Opto Corporation Tubeless light-emitting diode based lighting device
KR20110132198A (ko) * 2010-06-01 2011-12-07 이억기 발광 모듈 및 이를 갖는 조명 장치
KR101129707B1 (ko) * 2011-10-26 2012-03-28 정기석 형광등 타입의 엘이디 조명장치 및 그 제조방법
KR20140011783A (ko) * 2012-07-19 2014-01-29 파워젠 주식회사 Ｌｅｄ조명장치

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