KR200483908Y1 - A plate board type LED lamp - Google Patents

A plate board type LED lamp Download PDF

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Publication number
KR200483908Y1
KR200483908Y1 KR2020160001351U KR20160001351U KR200483908Y1 KR 200483908 Y1 KR200483908 Y1 KR 200483908Y1 KR 2020160001351 U KR2020160001351 U KR 2020160001351U KR 20160001351 U KR20160001351 U KR 20160001351U KR 200483908 Y1 KR200483908 Y1 KR 200483908Y1
Authority
KR
South Korea
Prior art keywords
edge
light guide
frame
guide plate
edge frame
Prior art date
Application number
KR2020160001351U
Other languages
Korean (ko)
Inventor
이범열
Original Assignee
(주)보승전기
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
Application filed by (주)보승전기 filed Critical (주)보승전기
Priority to KR2020160001351U priority Critical patent/KR200483908Y1/en
Application granted granted Critical
Publication of KR200483908Y1 publication Critical patent/KR200483908Y1/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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/03—Ceiling bases, e.g. ceiling roses
    • 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
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • 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
    • F21V19/0055—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by screwing
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • F21V21/041—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates
    • F21V21/042—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates using clamping means, e.g. for clamping with panel or wall
    • F21V21/043—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates using clamping means, e.g. for clamping with panel or wall actuated by screwing
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • F21V21/041—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates
    • F21V21/042—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates using clamping means, e.g. for clamping with panel or wall
    • F21V21/044—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates using clamping means, e.g. for clamping with panel or wall with elastically deformable elements, e.g. spring tongues
    • F21V21/045—Mounting arrangements specially adapted for false ceiling panels or partition walls made of plates using clamping means, e.g. for clamping with panel or wall with elastically deformable elements, e.g. spring tongues being tensioned by translation of parts, e.g. by pushing or pulling
    • 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
    • F21Y2101/00—Point-like light sources

Abstract

The present invention relates to a light guide plate unit (18) including a light guide plate (15) and a diffuser plate (14) disposed on the front surface of the light guide plate (15); A plurality of edge frames (10) surrounding the edge of the light guide plate unit (18) and having a fitting groove (11) extending along the length direction at an end thereof; An LED module 19 disposed on the side of the light guide plate unit 18 and accommodated in the edge frame 10; And a pair of edge frames 10, which are respectively fixed to edge frames 10 extending at right angles to each other at both ends of the central fixing portion 31, A fixing bracket 30 including a frame fixing portion 33; And a finishing cap (40) for finishing corner portions of the adjacent edge frames (10).

Description

A plate board type LED lamp

The present invention relates to an LED flat panel illumination lamp, and more particularly, to an LED flat panel illumination lamp adapted to illuminate an LED point light source with a surface light source.

In recent years, LEDs have been widely used as light sources for lighting apparatuses that replace fluorescent lamps and incandescent lamps. In particular, by maintaining the distance between the LEDs and the light guide plate appropriately, a so-called LED Flat lamps have been developed in various forms, replacing conventional fluorescent lamps.

Such LED flat panel luminaire can be classified into edge-lighting type and direct-lighting type according to the manner in which the LEDs are disposed. In the direct type, there is a limitation in reducing the lifetime and thickness of the power supply circuit Side light emitting type is spotlighted.

1 and 2 illustrate a conventional LED side light emitting type flat panel illumination lamp in which a rectangular diffusion plate 7a, a light guide plate 7b, a reflection plate 7c, and a cover 7d are vertically arranged, Edge frames 1 are combined. The corner portions to which the two adjoining edge frames 1 abut are connected to the corner connector 3. At this time, the LED module 8 is installed in the edge frame 1.

In the conventional edge frame 1, aluminum is extruded and cut to a suitable length, and the corner connector 3 is injection-molded by resin so as to be easily bonded to the metal edge frame 1 without friction. At this time, a coupling groove 2 is formed at the end of the edge frame 1 and a coupling projection 4 is formed at the corner coupling hole 3 to be fitted into the coupling groove 2. In addition, a screw hole 5 is formed in the corner connector 3, to which a screw 6 for fixing is fixed. As described above, in the conventional LED side light emitting type flat panel lamp, four screws 6 are fixedly mounted on the corner connector 3.

The LED side light emitting type flat panel illumination lamp of the related art has four edge frames 1 made of metal as described above and a diffusion plate 7a, a light guide plate 7b, and a reflection plate 7c And the cover 7d, and the weight is considerably large. Therefore, it is difficult to support the entire weight of the flat panel lamp with only the corner connector 3 made of a small plastic, which causes a problem of poor safety. That is, the corner connecting hole 3 can not support the weight of the flat lamp, and the screw hole 5 is broken, which may cause the flat lamp to fall off the ceiling. Further, since the head of the screw 6 is directly exposed to the outer surface of the corner connector 3, there is a problem that the appearance is deteriorated.

Korean Patent Registration No. 10-0948397

The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a screwdriver capable of more stably and stably installing the screwdriver, which improves safety and the head of the screw fixed to the fixture is concealed from the outside, The main thing is to provide LED flat panel lights.

According to a feature of the present invention, a light guide plate unit (18) including a light guide plate (15) and a diffuser plate (14) disposed on the entire surface of the light guide plate (15); A plurality of edge frames (10) surrounding the edge of the light guide plate unit (18) and having a fitting groove (11) extending along the length direction at an end thereof; An LED module 19 disposed on the side of the light guide plate unit 18 and accommodated in the edge frame 10; And a pair of edge frames 10, which are respectively fixed to edge frames 10 extending at right angles to each other at both ends of the central fixing portion 31, A fixing bracket 30 including a frame fixing portion 33; And a finishing cap (40) for finishing corner portions of the adjacent edge frames (10).

According to another aspect of the present invention, there is further provided a connecting member 20 connecting end portions of the adjacent edge frames 10 and coupling the finishing cap 40. The connecting member 20 is made of a synthetic resin material A concave groove 22 is formed in the corner portion of the adjacent edge frame 10 and the concave groove 22 is recessed inwardly so that the screw hole 32 of the fixing bracket 30 is exposed forward, A pair of fitting projections 24 respectively fitted in the fitting grooves 11 of the adjacent edge frames 10 extending perpendicularly to each other at the central connecting portion 21, And an engagement protrusion 23 formed on the inner wall of the through hole so as to be elastically engaged with the engagement protrusion 23 of the connection member 20. [ And an engaging piece (43) protruding rearward. do.

According to another aspect of the present invention, a blocking plate 13 protrudes rearward from an outer end of the edge frame 10, an insertion groove 13a is formed at an end of the blocking plate 13 in the longitudinal direction, A slit 12 communicating with the fitting groove 11 extends along the longitudinal direction and protrudes rearward from the central engaging portion 21 of the engaging member 20 and extends in directions perpendicular to each other, The insertion protrusions 25 are inserted into the slits 12 of the edge frame 10 on the back surface of the fitting protrusions 24, A screw groove 26 is formed in a distal end surface of the insertion protrusion 25 and the frame fixing portion 33 of the fixing bracket 30 is provided with a screw groove 26), and an assembly hole (34) through which the screw (51) passes is formed.

As described above, according to the present invention, the screw 50 is not stuck in the connecting member 20 of the synthetic resin material connecting the end portions of the adjacent edge frames 10, but the metal 50 is fixed to the fixing bracket 30, ), So that the weight of the entire large-sized LED flat panel lamp is supported by the metal fixing bracket (30), so that the structure is more robust and improved in stability, so that there is no fear of falling from the ceiling or the wall, do.

A finishing cap 40 for hiding the screw 50 from the outside can be further provided while achieving the above-mentioned effect, so that it is possible to prevent the appearance of the screw 50 from being deteriorated as the screw 50 is exposed. At this time, the engaging jaw 23 is formed on the connecting member 20 for fixing the finishing cap 40 to the edge frame 10, and the engaging jaw 23 is elastically engaged with the engaging jaw 23 It is possible to easily attach and detach the finishing cap 40, thereby simplifying the installation and maintenance of the LED flat panel lamp.

On the other hand, in the edge frame 10, the fitting groove 11 and the insertion groove 13a are doubly formed in the front and rear directions, and the fitting projection 20, which is fitted into the fitting groove 11 and the insertion groove 13a, The connecting member 20 is more rigidly coupled to the edge frame 10 and thus is structurally more stable. A slit 12 communicating with the fitting groove 11 is formed in the edge frame 10 and an insertion protrusion 25 inserted into the slit 12 is formed in the fitting protrusion 24 of the connecting member 20 And the frame fixing portion 33 of the fixing bracket 30 is screwed to the insertion protrusion 25 of the fitting projection 24 of the connecting member 20, And the fixing bracket 30 are more rigidly coupled to the edge frame 10 and are structurally more stable.

1 is a perspective view showing an example of a conventional LED flat panel illumination lamp,
Fig. 2 is an exploded view of the corner connecting portion in Fig. 1
Fig. 3 is an installation state diagram showing an embodiment of an LED flat panel illumination lamp according to the present invention
FIG. 4 is a cross-
5 is a cross-sectional view taken along line A-A '
6 is a cross-sectional view taken along line B-B '

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

3 to 6 are views showing an LED flat panel illumination lamp according to an embodiment of the present invention. As shown in the drawings, the LED flat panel illumination lamp according to one embodiment of the present invention includes a light guide plate unit 18, an edge frame 10 surrounding the edge of the light guide plate unit 18, An LED module 19 accommodated in the edge frame 10 and a fixing bracket 30 connecting the adjacent edge frames 10 and fixing the fixture 9 to each other; And a finishing cap 40 coupled to the connecting member 20. The finishing cap 40 may be formed of a synthetic resin.

The light guide plate unit 18 includes a light guide plate 15, a diffusion plate 14 disposed on the front surface of the light guide plate 15, a reflection plate 16 and a cover 17 disposed on the back surface of the light guide plate 15 Included is a well-known configuration used in flat-panel lights.

The edge frame 10 is formed by extruding a metal material and then cutting it to a predetermined length. The edge frame 10 is formed along the longitudinal direction at the end thereof. The edge frame 10 has a slit (not shown) 12 are formed along the longitudinal direction.

5 and 6, a circuit component such as an unillustrated converter provided on the back surface of the flat panel lamp is prevented from interfering with the workpiece 9 such as a ceiling, And a blocking plate 13 for blocking the cover 13 is provided. At this time, an insertion groove 13a is formed at an end portion of the blocking plate 13 in the longitudinal direction. The insertion groove 13a is inwardly bent into a translator shape at the widthwise end of the blocking plate 13 as shown in FIG. .

The LED module 19 is disposed on the side surface of the light guide plate unit 18 and is housed in the inner surface of the edge frame 10 as is well known.

The fixing bracket 30 includes a central fixing portion 31 fixed to the fixture 9 and a frame fixing portion 33 extending in a direction perpendicular to the central fixing portion 31 and fixed to the edge frame 10, And a reinforcing portion 36 connecting the pair of frame fixing portions 31 to reinforce the strength.

A screw hole 32 is formed in the central fixing part 31 to receive a screw 50 which is inserted into the fixture 9. At this time, the central fixing part 31 is folded in the shape of a tongue in the frame fixing part 33 and the reinforcing part 36 as shown in Fig.

On the other hand, the frame fixing portion 33 is formed with a screw hole 35 through which a screw 52 fixed to the slit 12 of the edge frame 10 passes. An auxiliary screw hole (34) is formed in the frame fixing part (33) between the central fixing part (31) and the screw hole (35). The fixing bracket 30 thus formed is made of a metal material, which can be manufactured by bending and punching a metal plate.

The connecting member 20 connects end portions of the adjacent edge frames 10 and fixes the finishing cap 40 to the edge frame 10. The connecting member 20 includes a central connecting portion 21 disposed at a corner portion of the edge frame 10 and a connecting portion 21 extending at right angles to each other at both ends of the central connecting portion 21, And a pair of fitting protrusions 24 which are fitted in the fitting holes.

A pair of fitting projections 24 are concaved inwardly at an obtuse outer side of the central connecting portion 21 so that the concave groove 22 aligned with the screw hole 32 of the fixing bracket 30 is engaged with the front- . In some cases, the through holes may extend back and forth. At this time, the screw hole 32 of the fixing bracket 30 is positioned inside the concave groove 22 or the through hole.

On the other hand, the central connecting portion 21 is provided with the attaching / detaching groove 27 on both sides of the concave groove 22 in which the finishing cap 40 is inserted. In addition, a locking protrusion 23 is formed on the inner wall of the concave groove 22 of the central connection part 21, to which the finishing cap 40 is coupled. The pair of wings 23a and 23b are inserted into the insertion grooves 13a of the barrier plate 13 of the edge frame 10 so as to protrude rearward from both sides of the latching jaw 23, (28).

On the other hand, an insertion protrusion 25 inserted into the slit 12 of the edge frame 10 protrudes and extends along the longitudinal direction on the back surface of the insertion protrusion 24, and the insertion protrusion 25 is provided with a screw groove 26 Is formed. The connecting member 20 thus formed may be formed of a metal material, but is preferably injection-molded with a synthetic resin.

The finishing cap 40 is detachably coupled to the front surface of the connecting member 20 to conceal the screw 50 which is inserted into the screw hole 32 of the central fixing portion 31 of the fixing bracket 30 from the outside. The finishing cap 40 includes a front plate 41 covering the central connecting portion 31 of the connecting member 30 and a side wall 41 extending rearward from the outer end of the front plate 41, And an elastic latching piece 43 provided on the front plate 41 and elastically hooked on the latching jaw 23 of the concave groove 22 of the connecting member 20 .

At this time, the resilient latching piece 43 is formed in a pin shape protruding rearward from the back surface of the front plate 41 and is formed with a convex protrusion laterally at the front end thereof, so that the engagement protrusion 43 of the concave groove 22 of the connecting member 20 23). As shown in FIG. 3, engaging fins 44 that are fitted to the attaching / detaching grooves 27 of the connecting member 20 are formed on both sides of the elastic engaging piece 43, respectively. The finishing cap 40 thus formed may be made of a metal material, but is preferably injection-molded with a synthetic resin.

The assembling process of the LED flat panel lamp according to one embodiment of the present invention will be described as follows.

The edge frame 10 is wrapped around the light guide plate unit 18 and the LED module 19 while a pair of fitting protrusions 21 of the connecting member 20 are fitted to the pair of adjacent edge frames 10 Respectively. After the auxiliary screw hole 34 of the frame fixing portion 33 of the fixing bracket 30 is aligned with the screw groove 26 of the connecting member 20, the auxiliary screw 51 is engaged. Thus, the connecting member 20 and the fixing bracket 30 are engaged with each other. At this time, the coupling member 20 may be coupled to the edge frame 10 in a state where the auxiliary screw 51 is assembled, and then the auxiliary screw 51 may be further tightened. Further, the fixing bracket 30 is fixed to the edge frame 10 by using screws 52.

Then, the screw 50 is inserted into the fixture 9 so as to pass through the screw hole 32 of the fixing bracket 30. Thus, the LED flat panel illumination lamp is fixed to the fixture 9. When the finishing cap 40 is coupled to the front surface of the engaging member 20, the screw 50 is concealed from the outside.

As described above, since the LED flat plate lamp is fixed to the stationary member 9 by fastening the screw 50 to the stationary bracket 30 made of a metal, the strength of the LED plate flat lamp is higher than that of the corner connector of the conventional synthetic resin material, So that the safety can be improved. At this time, the finishing cap 40 is used to conceal the screw 50 to make the appearance more beautiful.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

10: edge frame 11: fitting groove
20: connecting member 21: central connecting portion
22: concave groove 23:
24: insertion protrusion 30: fixing bracket
31: Central Government Administration 32:
33: frame fixing part 40: finishing cap
50: Screw

Claims (3)

A light guide plate unit (18) including a light guide plate (15) and a diffuser plate (14) disposed on the front surface of the light guide plate (15);
A plurality of edge frames (10) surrounding the edge of the light guide plate unit (18) and having a fitting groove (11) extending along the length direction at an end thereof;
An LED module 19 disposed on the side of the light guide plate unit 18 and accommodated in the edge frame 10;
And a pair of edge frames 10, which are respectively fixed to edge frames 10 extending at right angles to each other at both ends of the central fixing portion 31, A fixing bracket 30 including a frame fixing portion 33;
The edge frame 10 is made of a synthetic resin material and is positioned at the corner of the adjacent edge frame 10 to connect the adjacent edge frames 10 to each other. And a central connecting portion 21 in which a through hole is formed in a front and a rear of which a concave groove 22 is formed and an insertion groove 11 of an adjacent edge frame 10 extending in a direction perpendicular to the central connecting portion 21 A connecting member (20) including a pair of fitting projections (24) to be fitted respectively and an engaging step (23) formed on the inner wall of the concave groove (22) or the through hole; And
An elastic engaging piece 43 elastically engaged with the engaging jaw 23 of the connecting member 20 is engaged with the rear edge of the edge frame 10, And a finishing cap (40) protruding from the flat plate lamp.
delete The end frame according to claim 1, wherein a blocking plate (13) protrudes rearward from an outer end of the edge frame (10), an insertion groove (13a) is formed at a longitudinal end of the blocking plate (13) A slit 12 communicating with the edge 11 of the edge frame 10 extends along the longitudinal direction and protrudes rearward from the central connecting portion 21 of the connecting member 20, The insertion protrusion 25 inserted into the slit 12 of the edge frame 10 is provided on the back surface of the fitting protrusion 24 in the longitudinal direction A screw groove 26 is formed in a front end surface of the insertion protrusion 25 and a threaded groove 26 of the connection member 20 is formed in the frame fixing portion 33 of the fixing bracket 30, And an assembly hole (34) through which the screw (51) is passed is formed.
KR2020160001351U 2016-03-14 2016-03-14 A plate board type LED lamp KR200483908Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020160001351U KR200483908Y1 (en) 2016-03-14 2016-03-14 A plate board type LED lamp

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Application Number Priority Date Filing Date Title
KR2020160001351U KR200483908Y1 (en) 2016-03-14 2016-03-14 A plate board type LED lamp

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KR200483908Y1 true KR200483908Y1 (en) 2017-07-06

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108758470A (en) * 2018-07-16 2018-11-06 嘉兴市德益康光电科技有限公司 A kind of embedded LED panel lamp
KR101953036B1 (en) 2017-11-23 2019-02-27 이년재 A plate board type LED lamp
KR102067194B1 (en) 2019-06-19 2020-01-17 이정호 plate board type led lamp
KR102595582B1 (en) * 2023-07-03 2023-10-30 주식회사 준성테크 The lighting assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948397B1 (en) 2007-07-31 2010-03-19 주식회사 옵토필 Illunmnating apparatus of surface light emitting using light-emitting diode
CN203068428U (en) * 2012-12-21 2013-07-17 厦门博美达照明有限公司 Light emitting diode (LED) flat surface lamp backlight plate fixing structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948397B1 (en) 2007-07-31 2010-03-19 주식회사 옵토필 Illunmnating apparatus of surface light emitting using light-emitting diode
CN203068428U (en) * 2012-12-21 2013-07-17 厦门博美达照明有限公司 Light emitting diode (LED) flat surface lamp backlight plate fixing structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101953036B1 (en) 2017-11-23 2019-02-27 이년재 A plate board type LED lamp
CN108758470A (en) * 2018-07-16 2018-11-06 嘉兴市德益康光电科技有限公司 A kind of embedded LED panel lamp
KR102067194B1 (en) 2019-06-19 2020-01-17 이정호 plate board type led lamp
KR102595582B1 (en) * 2023-07-03 2023-10-30 주식회사 준성테크 The lighting assembly

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