KR101739523B1 - Planar lighting apparatus for ceiling direct installation type - Google Patents

Abstract

The present invention relates to a direct ceiling-attached type flat illumination device which can prevent damage thereto caused by surge voltage in advance while preventing deformation as well as can be installed at a carrying channel or a ceiling board directly or by selectively using a mount bracket. The present invention provides the direct ceiling-attached type flat illumination device includes a plurality of ceiling mount units (75) for being installed at the carrying channel or the ceiling board of the ceiling while fixating a light panel at an edge frame (30), wherein the ceiling mount unit (75) includes: an insulated bush unit (76) made of a cylindrical insulated body to be mounted by a screw via a mount hole (74); a support plate (79) for connecting a lower end of the insulated bush (76) to a mount surface and making a side of the edge frame (30) come into contact with a side of the mount surface; and an insulated plate (78) erected corresponding to the support plate (79) with respect to the insulated bush (76), and the edge frame (30) includes: a pair of screw mount slots (32) having an elbow shape formed by bending a cross section, vertical to a longitudinal direction, toward an inner side and formed to be erected in a longitudinal direction on a bottom; and a panel support plate (33) extended from an edge of the bottom and formed in a longitudinal direction to support the light panel; and a screw insertion hole (15) formed at the insulated bush (76) for fastening the screw.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flat lighting fixture for ceiling,

The present invention relates to a ceiling-mounted flat panel luminaire, and more particularly, to a ceiling-mounted flat panel luminaire which can be mounted directly on a carring channel or a ceiling board constituting a ceiling or by selectively using a mounting bracket, The present invention relates to a ceiling-mounted flat type lighting fixture which can prevent a lighting apparatus from being damaged by a voltage in advance.

In recent years, an illumination light using a light emitting diode (light emitting diode) as a light source has been widely used. Such an illumination light saves energy because it consumes less power than an incandescent lamp or a fluorescent lamp, , Has a long life, and is environmentally friendly.

LED flat-panel luminaire can be classified into edge-lighting type and direct-lighting type depending on the manner in which the light emitting diode is disposed and the direction in which the light is emitted and emitted.

The side-emitting type has a relatively thin structure, which is advantageous for slimming down the product, but has a disadvantage in reducing the luminance and increasing the weight due to the light guide plate. In the direct type, the thickness of the product can be reduced while the light emitting diode dot ) And a separate space for using the power supply unit (SMPS) is required.

In addition, a product in which the power supply circuit is disposed on the same PCB as the light emitting diode (LED) has been developed to reduce the thickness and simplify the installation process. However, when the power supply circuit of short life is to be replaced, Since the unique characteristics of LED lighting can not guarantee a long lifetime, a side-emitting type flat panel luminaire that can guarantee a thin thickness and a long life is getting popular.

As a conventional side-emission type flat panel illuminator, there is a registered patent No. 1533918 (registered date: June 29, 2015).

As shown in FIG. 9, the LED panel 10 includes a light panel 10 for guiding a path of light, scattering and diffusing light, An LED module for irradiating light toward the side surface of the light panel 10 and a mounting part for supporting the side panel of the light panel 10 while supporting the LED module on a side opposite to the light panel 10 An edge frame (30) formed with at least one rail groove on an upper surface thereof, and an edge frame (30) slidably mounted on both sides of the upper edge frame facing each other of the four edge frames (30) , A slider holder (40) having at least one guide protrusion having a shape corresponding to the rail groove and a top surface fixed to the ceiling Only the LED lighting fixture having a flat bracket (50) engaging portions are formed are selectively reject line falls to a predetermined height from the ceiling so as to be supported took 51 of the slider holder disclosed.

Reference numeral 80 denotes a corner cap, and reference numeral 90 denotes a reinforcement bracket.

However, in order to install the conventional side light-emitting type flat panel luminaire as described above on the ceiling, since the bracket 50 must be mounted on the ceiling and then coupled to the slider holder 40, installation work is troublesome and the slider holder 40 And a reinforcing bracket 90 are required, which increases the manufacturing cost of the product.

Further, in order to prevent the shape of the life panel 10 from being deformed, there is a problem that the reinforcing bracket 90 is mounted and the shape of the edge frame 30 or the like is complicated.

On the other hand, when the lighting apparatus is mounted on the structured ceiling carrying channel using the bracket 50, a problem that the lighting apparatus is damaged by the surge voltage frequently occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a lighting system which can directly mount a lighting apparatus on a carring channel or a ceiling board constituting a ceiling while preventing deformation of an edge frame, Which is capable of greatly improving the brightness of the flat panel lighting fixture.

It is another object of the present invention to provide a ceiling-mount type flat panel luminaire that can firmly support an edge frame to prevent deformation while electrically shielding a lighting device and a carring channel constituting the ceiling, thereby greatly improving the reliability of the product.

In addition, it is an object of the present invention to provide a ceiling-mount type flat panel luminaire that can simplify a part for selectively mounting and mounting a mounting bracket on a ceiling, a wall surface, or the like, thereby greatly reducing the manufacturing cost of the product.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

In accordance with the present invention, there is provided a ceiling-mounted flat type lighting fixture comprising: a line light source (35) having a plurality of LEDs mounted on a bar-shaped PCB and constituting a light source; And an edge frame (30) for holding and fixing the shape of the light panel mounted on a lateral outer side of the light panel, And a plurality of ceiling mounts (75) for mounting a flat panel luminaire on a ceiling carring channel or a ceiling board while fixing the light panel to the edge frame (30), wherein the ceiling mount ) Has an insulating bushing (76) for mounting the flat-plate luminaire with a screw through a mounting hole (74) penetrated by a cylindrical insulator, and a lower end of the insulating bushing (76) Connected A support plate part 79 for contacting the side surface of the edge frame 30 so as to be in contact with the side surface of the mounting frame and an insulating plate part 76 rising in relation to the support plate part 79 with respect to the insulating bushing part 76, The edge frame 30 includes an elbow shape bent inwardly in a direction perpendicular to the longitudinal direction, a screw mounting slot 32 in which a pair of longitudinally extending bottom faces are formed, A panel support plate 33 extending from the edge to support the light panel in a longitudinal direction is formed and a screw insertion hole 15 for fastening a screw to the insulation bushing 76 may be formed.
The present invention is also directed to a mounting bracket 70 for mounting on a ceiling or a wall surface and a plurality of panel fixing elastic holders 60 mounted on the edge frame 30 to be elastically coupled to the mounting bracket 70. [ Wherein the panel-fixed elastic holder (60) comprises a mounting plate (66) in the form of a rectangular plate and an elastic plate (61) extending to extend from both sides of the mounting plate (66) The elastic member 70 is formed by bending both side surfaces of a quadrangular plate so as to form a claw-shaped resiliently engaging portion 71 and is engaged with the engaging jaw 62 formed on the resilient plate 61 of the panel- Lt; / RTI >

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In this case, it is preferable to further include a loop for respectively coupling to the panel-fixed elastic holder 60 and a fall prevention wire for covering the mounting bracket 70 while connecting the loop.

As described above, according to the present invention, it is possible to directly mount the flat panel luminaire to the ceiling carring channel or the ceiling board, so that the installation work of the luminaire can be performed quickly and conveniently, There is an effect.

In addition, since the mounting bracket can be selectively mounted on a ceiling, a wall surface, or the like, it is possible not only to expand the compatibility of the product, but also to simplify the component, thereby greatly reducing the manufacturing cost of the product, thereby improving productivity.

On the other hand, there is an effect that the edge frame is firmly supported to prevent the deformation and the lighting mechanism and the carring channel constituting the ceiling are electrically interrupted to prevent the damage of the lighting apparatus by the surge voltage in advance, .

1 is a perspective view of a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention,
FIGS. 2A and 2B are exploded perspective views of a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention;
3 is a front view of a ceiling-mounted flat panel luminaire according to an embodiment of the present invention,
FIGS. 4A to 4C illustrate a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention,
5A to 5D are views showing a panel fixing elastic holder in a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention,
FIGS. 6A and 6B are views showing a mounting bracket in a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention,
FIG. 7 is a schematic cross-sectional structural view of the line AA in FIG. 1,
Fig. 8 is a schematic sectional configuration diagram of the BB line in Fig. 1,
FIG. 9 is a conventional general side-emission type flat panel luminaire.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a ceiling-mounted flat type lighting fixture according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of a ceiling-mounted type flat panel luminaire according to an embodiment of the present invention, FIGS. 2a and 2b are exploded perspective views of a ceiling-mounted flat panel luminaire according to an embodiment of the present invention, FIG. 4 is a front view of a ceiling-mounted flat panel luminaire according to an embodiment.

4A to 4C are perspective views of a ceiling mount type flat panel luminaire according to an exemplary embodiment of the present invention. FIGS. 5A to 5D are views showing a ceiling mount type flat panel luminaire according to an embodiment of the present invention. 6A and 6B are mounting brackets in a ceiling-mounted flat type lighting fixture according to an embodiment of the present invention, FIG. 7 is a schematic cross-sectional structural view of the line AA in FIG. 1, Fig. 3 is a schematic cross-sectional view of the BB line of Fig.

In the drawings, the same reference numerals are given to the same elements even when they are shown in different drawings. In the drawings, the same reference numerals as used in the accompanying drawings are used to designate the same or similar elements. And detailed description of the configuration will be omitted. Also, directional terms such as "top", "bottom", "front", "back", "front", "forward", "rear", etc. are used in connection with the orientation of the disclosed drawing (s). Since the elements of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for illustrative purposes, not limitation.

As shown in FIGS. 1 to 8, the ceiling-mount type flat panel luminaire according to the present invention includes a line light source 35 in which a plurality of LEDs are mounted on a PCB in the form of a line, A light panel that induces scattering and diffusion of light irradiated through the line light source 35 to convert the point light source into a planar light source and an edge coupled to a side outer edge of the light panel to maintain and fix the shape of the flat light fixture, A frame 30 and a plurality of ceiling mounts 75 for fixing the light panel to the edge frame 30 and installing a flat light fixture on the ceiling carring channel or ceiling board.

Here, the ceiling mount 75 may include an insulating bus portion 76 for mounting the flat panel luminaire to a mounting position with a screw through a mounting hole 74 penetrated by a cylindrical insulator. The edge frame 30 is formed with a screw insertion hole 15 for fastening a screw to the insulating bushing 76.

The mounting bracket 70 is mounted on a ceiling or a wall depending on the place where the flat panel luminaire according to the present invention is installed. The mounting bracket 70 is mounted on the edge frame 30 and is elastically fastened to the mounting bracket 70 And a plurality of panel-fixed elastic holders 60 for holding the panel.

Therefore, the ceiling-mounted flat-panel luminaire according to the present invention can be directly mounted on a carrying channel or a ceiling board that is slim and constitutes a ceiling, thereby facilitating installation work and preventing damage to the luminaire due to surge voltage .

In addition, the number of parts of the product can be reduced, and the manufacturing cost is reduced.

The line light source 35 may have a structure in which a plurality of light emitting devices are mounted on a PCB circuit board of a bar shape at predetermined intervals to emit light.

As the light emitting device, it is most preferable to use a high-brightness LED (Light Emitting Diode) chip. Alternatively, an organic EL (electroluminescence) may be employed. In addition, the light emitting devices are connected by a circuit wiring on a PCB circuit board, and the ends of the light emitting devices are connected to a power supply unit by a connector (not shown) to receive power or exchange electrical signals. Further, it is preferable that a separate heat dissipating member for dissipating the heat generated from the light emitting device to the outside is provided.

The light panel uniformly diffuses the light of the point light source emitted from the line light source 35 onto the entire surface to uniformly and reliably emit light as the light of the surface light source, as shown in FIG. 2B, FIG. 6, Thereby maximizing the efficiency of illumination by minimizing the loss of light generated from the LED.

The light panel includes a light guide plate 12 that receives the light emitted from the line light source 35 and transmits the light uniformly to the entire light emitting surface and a light guide plate 12 that is stacked or attached to the lower surface of the light guide plate 12, A diffusing plate 11 for scattering and diffusing light emitted through the light guide plate 12 and emitting the light through the light guide plate 12 uniformly to the outside, And a reflecting sheet 13 laminated on or attached to the upper surface of the reflective sheet 13 to prevent light emitted through the light guide plate 12 from being lost to the upper surface of the light guide plate 12 And a back cover 14 for protecting the upper surface of the back cover 14. That is, the light generated from the line light source 35 located on one side of the light guide plate 12 is incident on the light guide plate 12, is scattered or diffusedly reflected while being reflected through the reflective sheet 13 stacked on the light guide plate 12, And the light is emitted to the front surface through the diffuser plate 11 stacked on the lower surface of the light guide plate 12.

The light guide plate 12 may be formed of a transmissive resin such as acrylic resin (PMMA), polycarbonate resin, or amorphous polyolefin resin, and may be formed by dot printing or a "V" A pattern of a pattern may be formed.

The reflection sheet 13 and the diffusion plate 11 may be formed in the form of a film and the diffusion plate 11 may be a combination of a transparent thermoplastic resin and a low molecular liquid crystal or a combination of polyvinyl alcohol and a low molecular liquid crystal And may further include an acrylic diffusing agent or a light absorbing material, or may be formed by forming a fine pattern.

The back cover 14 may be formed of an aluminum plate or the like having excellent thermal conductivity to smoothly discharge the heat generated from the line light source 35. The back cover 14 may also function as a heat sink, It is preferable to mount it on the frame 30 so as to maintain a firmly fixed state.

The line light source 35 is mounted on the edge frame and emits light when power is supplied to uniformly irradiate the light toward the side of the light guide plate 12 of the light panel. That is, the line light source 35 is inserted into and mounted on at least one or both of the edge frames 30 facing each other of the edge frames 30 that support the side panel of the light panel in a rectangular frame shape, The incident light is reflected, refracted and diffused by the reflection sheet 13 and the diffuser plate 11 of the light panel and is uniformly emitted toward the room.

As shown in FIGS. 1 to 3, the edge frame 30 surrounds and supports the side edges of the light panel. In addition, the edge frame constituting one side receives the line light source 35.

The edge frame 30 is formed in an elbow shape in which a cross section perpendicular to the longitudinal direction is inwardly bent and a bottom is formed with a pair of screw mounting slots 32 extending in the longitudinal direction, And a panel support plate 33 for supporting the plate 11 is formed in the longitudinal direction. A substrate mounting groove 31 is formed between the panel supporting plate 33 and the screw mounting slot 32 so that the line light source 35 can be seated.

Accordingly, the line light source 35 is seated in the substrate mounting groove 31 and the diffusion plate 11, the light guide plate 12, the reflection sheet 13, the back cover 14, The back cover 14 preferably has an area that can be covered up to the upper end of the screw mounting slot 32. [

The diffuser plate 11, the light guide plate 12, the reflection sheet 13 and the back cover 14 mounted on the panel support plate 33 are screwed into the screw mounting slot 32 and is firmly coupled to the edge frame 30.

4A to 4C, the ceiling mount 75 includes a cylindrical insulating bushing 76 having a through-hole mounting hole 74, and an insulating bushing 76 having the insulating bushing 76 A supporting plate portion 79 connected to the mounting surface and in contact with the side surface of the edge frame 30 so as to be in contact with the supporting plate portion 79, And a insulating plate portion 78. [ In addition, the ceiling mount 75 may be integrally formed of an insulator.

A fastening hole 77 for screwing the ceiling mount 75 to the edge frame 30 is formed on the mounting surface between the support plate 79 and the insulating plate 78. The fastening hole 77 is fastened to the screw mounting slot 32 formed in the edge frame 30 so that the diffusion plate 11, the light guide plate 12, the reflection sheet 13, the back cover 14, So that it is firmly fixed to the edge frame 30.

The support plate 79 is disposed to face the inside of the side surface of the edge frame 30 to prevent the shape of the edge frame 30 from being distorted and the insulation plate portion 78 is connected to the insulation bushing 76 To electrically insulate the flat panel luminaire of the present invention from the ceiling conductor.

3, a screw insertion hole 15 is formed in the edge frame 30 on which the ceiling mount 75 is located, and a screw is inserted through the screw insertion hole 15, The flat lighting apparatus according to the present invention is mounted on a ceiling carring channel or a ceiling board through a mounting hole 74 formed in an insulating bushing 76 of the ceiling board 75.

It is preferable that the screw insertion opening 15 formed in the edge frame 30 is closed after inserting the silicone finishing member after the installation of the flat panel luminaire is completed.

The support plate 79 of the ceiling mount 75 has a height lower than that of the insulation plate 78 so that a gap is formed between the ceiling and the edge frame when the flat panel luminaire according to the present invention is installed ≪ / RTI > The mounting hole 74 formed in the insulating bushing 76 and the fastening hole 77 are formed at different distances from the side surface of the edge frame 30 to assemble the flat lighting apparatus according to the present invention The direction in which the ceiling mount 75 is installed is preferably made uniform.

The flat panel luminaire according to the present invention includes a mounting bracket 70 for mounting on a ceiling or a wall in accordance with a location where the flat panel luminaire is installed as described above and a mounting bracket 70 mounted on the edge frame 30 to elastically contact the mounting bracket 70 And a plurality of panel-fixing elastic holders 60 to be fastened.

5A to 5D, the panel-fixed elastic holder 60 includes a mounting plate 66 having a rectangular plate shape and an elastic plate 61 extending upright from both sides of the mounting plate 66, May be formed. A fastening hole 65 is formed in the mounting plate 66 so as to be screwed into the screw mounting slot 32 of the edge frame 30.

The panel fixing elastic holder 60 is screwed to the edge frame 30 so as to correspond to the outer wall of the mounting bracket 70 and then the mounting bracket 70 is fixed to the panel fixing elastic holder 60. [ And is mounted on one side elastic plate 61. At this time, the mounting bracket 70 to be coupled is not released by the latching protrusion 62 formed on the elastic plate 61.

The panel-fixing elastic holder 60 may be independently formed on both sides of the mounting bracket 70, but is not limited thereto. That is, the mounting plates 66 may be connected to each other so as to be positioned on both sides of the mounting bracket 70.

As shown in FIGS. 6A and 6B, the mounting bracket 70 is for mounting the flat panel luminaire according to the present invention on a ceiling or a wall surface. The mounting bracket 70 is formed by bending both sides of a quadrangular plate, (71).

The elastic fastening portions 71 are engaged with the elastic plate 61 of the panel fixing elastic holder 60 so that the hook portions are prevented from being separated by the fastening protrusions 62 formed on the elastic plate 61 do. That is, the mounting bracket 70 is coupled to the panel-fixing elastic holder 60 at both ends of the elastic grip portion 71 formed on both side walls to mount the flat panel lighting apparatus according to the present invention on a ceiling or a wall.

On the other hand, the mounting bracket 70 is provided with a power line inserting hole 72 for inserting electric wires in the central part of the main body, and a long hole is formed at both sides of the inserting bracket 70 so as to be mounted on a ceiling or a wall surface by using screws desirable.

Further, it may further comprise a fall prevention wire which is coupled to the panel-fixed elastic holder 60 in a ring-like manner on both sides. That is, although not shown, a ring formed on both sides is fastened to the panel-fixed elastic holder 60, and a wire connecting the ring is configured to wrap the mounting bracket 70, Is detached from the mounting surface, the flat panel lighting apparatus according to the present invention is prevented from falling down to the ground.

The assembling and mounting state of the ceiling-mounted flat type lighting fixture according to the present invention constructed as described above will be described.

First, the diffusion plate 11, the light guide plate 12, the reflection sheet 13, and the back cover 14 are seated on the edge frame 30 of the frame. At this time, the diffusion plate 11, the light guide plate 12, the reflection sheet 13, and the back cover 14 are supported by the panel support plate 33 formed on the edge frame 30, The line light source 35 is positioned in the substrate mounting groove 31 of the edge frame 30 located at the center of the edge frame 30.

The ceiling mount 75 is positioned at the edge of the back cover 14 located at the upper end of the screw mounting slot 32 formed in the edge frame 30 and the fastening holes 77 ). That is, the ceiling mount 75 is fastened to the screw mounting slot 32 formed in the edge frame 30 by using a screw so that the diffusion plate 11, the light guide plate 12, the reflection sheet 13, (14) is firmly fixed, thereby completing the assembly of the ceiling-mount type flat panel luminaire of the present invention.

Meanwhile, it is assumed that a carring channel is formed on a ceiling where a ceiling-mounted flat type lighting fixture according to the present invention is to be installed.

After the ceiling fitting type flat panel lighting apparatus according to the present invention assembled as described above is placed at the installation site, the screw is inserted through the screw insertion opening 15 formed in the front surface of the edge frame 30, Through the mounting hole (74) of the insulating bushing (76).

At this time, it is preferable that the screw insertion opening 15 formed on the front surface of the edge frame 30 is finished with a silicone finishing member.

If a carring channel is not provided at the installation site, it may be installed directly on the ceiling board.

On the other hand, when it is not suitable to attach to the caring channel or the ceiling board, the panel fixing elastic holder 60 should be further fastened to the edge frame 30. In other words, the panel fixing elastic holder 60 is fastened to the edge frame 30 so as to be engaged with the mounting bracket 70.

Then, the mounting bracket 70 is first mounted on the installation site, and then the panel fixing elastic holder 60 is coupled to the mounted mounting bracket 70, thereby completing the installation of the flat panel luminaire.

As described above, since the ceiling-mounted flat type lighting fixture according to the present invention can be directly mounted on the ceiling or the ceiling, it is possible to quickly and conveniently install the lighting fixtures.

In addition, the mounting bracket can be selectively mounted on a ceiling, a wall surface, or the like, so that the compatibility of the product can be expanded, and the manufacturing cost of the product can be greatly reduced by simplifying the components.

In addition, since the ceiling is mounted on the ceiling using the ceiling mount 75 formed of an insulator, the ceiling can be completely insulated from the flat lighting fixture, and the damage of the lighting fixture due to the surge voltage can be prevented in advance.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention if they are apparent to those skilled in the art.

11: diffusion plate 12: light guide plate
13: reflective sheet 14: back cover
15: screw insertion port 30: edge frame
31: substrate mounting groove 32: screw mounting slot
33: panel support plate 35: line light source
60: panel fixing elastic holder 61: elastic plate
62: stopper 65: fastening hole
66: mounting plate 70: mounting bracket
71: Elastic locking portion 72: Power line insertion port
73: incision section 74: mounting hole
75: ceiling mount 76: insulating bushing
77: fastening hole 78: insulating plate part
79: support plate

Claims (4)

A line light source 35 constituting a light source in which a plurality of LEDs are mounted on a PCB in the form of a bar and a point light source converted into a surface light source by inducing scattering and diffusion of light emitted through the line light source 35 And an edge frame (30) mounted on a lateral outer surface of the light panel for holding and fixing the shape thereof,
And a plurality of ceiling mounts (75) for mounting a flat light fixture on a ceiling carring channel or ceiling board while fixing the light panel to the edge frame (30)
The ceiling mount 75 includes an insulating bushing 76 for mounting the flat panel luminaire to a mounting position with screws through a mounting hole 74 penetrated by a cylindrical insulator, A support plate portion 79 connected to the mounting surface and adapted to come into contact with a side surface of the edge frame 30 to one side of the mounting surface and a support plate portion 79 And an insulating plate portion 78 rising in correspondence with the insulating plate portion 78,
The edge frame (30) has an elbow shape in which a cross section perpendicular to the longitudinal direction is bent inward, a screw mounting slot (32) in which a pair of the bottom side is formed by standing in the longitudinal direction, And a screw insertion hole (15) for fastening a screw to the insulation bushing (76) is formed in the panel support plate (33).
delete The method according to claim 1,
A mounting bracket 70 for mounting on a ceiling or a wall surface and a plurality of panel fixing elastic holders 60 mounted on the edge frame 30 to be elastically coupled to the mounting bracket 70,
The panel fixing elastic holder 60 includes a mounting plate 66 in the form of a rectangular plate and an elastic plate 61 extended to extend from both sides of the mounting plate 66,
The mounting bracket 70 is formed by bending both sides of a square plate so as to form a claw-shaped elastic latching portion 71 and fixing the latching claws 62 to the latching claws 62 formed on the elastic plate 61 of the panel- Wherein the ceiling-mounted flat-type lighting fixture comprises:
The method of claim 3,
Further comprising: a ring for being coupled to the panel-fixing elastic holder (60), and a fall prevention wire for covering the mounting bracket (70) while connecting the loop.

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