KR101533918B1 - Light emitting diode flat luminaires - Google Patents

Abstract

The present invention is to provide an LED lighting fixture capable of improving convenience and efficiency of an installation work on a ceiling. For this, disclosed is the LED flat lighting fixture including: a light panel which induces a path and scattering and diffusion of a light; an LED module which irradiates the light to a side of the light panel by emitting the light when electricity is supplied; an edge frame which supports the light panel by surrounding all side frames of the light panel, and has an installation slot to install the LED module on a side facing the light panel, and has at least one rail groove on the upper plane; a slider holder which is installed on both sides of the upper planes of facing edge frames as being able to be slid, and has a hooking part protruded toward a center of the light panel, and has at least one guide protrusion of a shape corresponding to the rail groove on the bottom; and a bracket which has a hanger part apart from the ceiling at both ends in order for the hooking part of the slider holder to be hooked and supported selectively.

Description

[0001] The present invention relates to a light emitting diode flat luminaires,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light emitting diode flat panel luminaire used for indoor lighting in houses, buildings, and the like, and more particularly, To a flat panel luminaire.

Today, a variety of lighting fixtures are being used to provide light or illuminate objects in night or dark rooms. Especially, the lighting lamp that uses the light emitting diode (light emitting diode) as the light source has a lower power consumption than the incandescent lamp or the fluorescent lamp and saves energy. In addition to the conventional light sources, the solid type point light source has a long life, In terms of characteristics, it is advantageous in terms of maintenance and the like.

However, a light-emitting diode in the form of a simple combination of light-emitting diodes emits optically clear monochromatic light, which causes uncomfortable glare and eye fatigue to the user, so that it can be used as indirect lighting for direct lighting or indoors It is important that an appropriate lens or light guide plate is coupled.

In recent years, by appropriately maintaining the distance between the light emitting diode and the light guide plate for diffusing the light, the light of the point light source generated from the light emitting diode is converted into the light of the planar light source (light source having the light- LED flat panel luminaire has been developed in various forms, replacing existing fluorescent luminaire.

Such LED flat panel luminaire can generally 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 directly and emitted.

In the latter case, it is advantageous to make the product slim due to its relatively thin thickness, but it has disadvantages of reduced luminance and weight due to the light guide plate. In the latter case, when the thickness of the product is reduced, the LED dot (light emitting diode) There is a limit to the slimness because a separate space is required for using the SMPS.

In recent years, a product has been developed in which the power supply circuit is disposed on the same PCB as the light emitting diode (LED), and the thickness is reduced and the installation process is simplified. However, since the entire life of the power supply circuit is required, It has a tendency to maintain a long life characteristic and to have a thin thickness side light emitting type product because it causes a result to reverse the long life characteristic.

Examples of the conventional LED flat panel luminaire are disclosed in Korean Patent Publication No. 10-1221196, Korean Patent Laid-Open Publication No. 10-2011-0035354, Korean Patent Laid-Open Publication No. 10-2011-0066014, Korean Patent Laid- -2011-0113701 and Korean Patent Registration No. 10-1160816.

However, the LED flat panel luminaire uses a switching power supply (SMPS) that converts high-voltage alternating current into a low-voltage direct current due to the structural characteristics of the LED as a light source, A power supply unit (PSU) composed of a constant current circuit for supplying current is necessarily required.

Therefore, when the LED flat panel luminaire is installed on the ceiling, the PSU is fixed on the upper surface of the main body, and the rim of the main body is fixed to the ceiling with screws or the like while being embedded in the ceiling.

As a result, in the process of installing the LED flat panel luminaire on the ceiling, interferences with the background material existing at installation sites such as M-shaped, tee-shaped, and cared are suspended by supporting the ceiling board or plywood There is a problem in that the installation process is difficult and inconvenient because the installation must be constrained, and in some cases, the PSU must be partially damaged in order to be embedded in the ceiling.

In addition, since the screw is fixed to the ceiling of the body of the LED flat panel luminaire, the installation process of the flat panel luminaire is very troublesome and troublesome, and it takes much time and money to work. There is a limitation that the appearance of the hole is reduced due to the exposure of the hole.

Especially, when replacing old fluorescent lighting fixtures or aged or broken LED flat lighting fixtures, the screws that keep the body fixed on the ceiling are separated and removed, and then the replacement LED flat lighting fixture is brought into close contact with the ceiling The workability and efficiency are significantly lowered because the screws must be tightened with each other and fixed.

Furthermore, because the life span of the PSU is shorter than that of the LED module, it is required to have a structure in which the main body can be coupled and separated quickly and easily due to the necessity of periodical replacement or trouble repair. However, the conventional LED flat panel luminaire Respectively.

Meanwhile, Korean Utility Model Registration No. 20-0447906 proposes a lighting device in which a bracket is first installed on a ceiling and a light emitting diode module is inserted and fixed on the ceiling. However, after fixing the bracket to the ceiling with screws, The light emitting diode module must be fixed with four bolts and nuts, and the hole must be punched in the ceiling with a width of about 200mm so that the PSU can be inserted into the ceiling so that the ceiling is finished with a single plywood The installation process is very complicated and uncomfortable, and the operation time is long.

Korean Registered Patent No. 10-1368254 (Feb. Korean Registered Patent No. 10-1221196 (Apr. 1, 2014) Korean Registered Patent No. 10-1126039 (Mar. 19, 2012) Korean Registered Patent No. 10-1185523 (September 18, 2012) Korean Registered Patent No. 10-0789172 (2008.01.02) Korean Registered Patent No. 10-1086017 (November 22, 2011) Korean Registered Patent No. 10-1019072 (Mar. Korean Registered Patent No. 10-0789172 (2008.01.02) Korean Registered Patent No. 10-1008971 (January 17, 2011) Korean Registered Patent No. 10-1160816 (Jun. 29, 2012) Korean Registered Patent No. 10-0789172 (2008.01.02) Korean Registered Patent No. 10-0996403 (Nov. 24, 2010) Korean Patent Publication No. 10-2010-0001021 (2010.01.06) Korean Patent Publication No. 10-2012-0045244 (2012.05.09) Korean Patent Publication No. 10-2007-0101517 (2007.10.17) Korean Patent Publication No. 10-2009-0017916 (2009.02.19) Korean Registered Utility Model No. 20-0449070 (June 4, 2010) Korean Registered Patent No. 10-1340053 (December 13, 2013) Registered Utility Model No. 20-0469007 (2013.09.11) Korean Registered Utility Model No. 20-0469651 (Nov. 31, 2013) Registered Utility Model No. 20-0469652 of Korea Registered (Oct. 29, 2013) Korean Utility Model Registration No. 20-0468775 (2013.09.06) Korea Registered Utility Model No. 20-0447906 (Mar. 3, 2010) Japanese Unexamined Patent Application Publication No. 2009-32664 (Feb. Japanese Patent Application Laid-Open No. 2009-99316 (2009.05.07)

Accordingly, the present inventors have taken the above-mentioned considerations into consideration comprehensively and solved the problems, and have found that if there is no hole for inserting a power supply unit (PSU) or the like in the ceiling, or if the hole can not be pierced, As a result, the inventors of the present invention invented the present invention as a result of diligent efforts to develop an LED flat panel luminaire capable of enhancing the convenience and efficiency of operation by being able to be installed, .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an LED flat panel luminaire which can be easily and easily installed without having to drill a hole for embedding a power supply unit in a ceiling.

It is another object of the present invention to provide an LED flat panel luminaire capable of firmly holding a ceiling mounted state.

It is still another technical object of the present invention to provide an LED flat panel luminaire capable of quickly and easily replacing and repairing a power supply unit when necessary.

According to a first aspect of the present invention, there is provided a light source device comprising: a light panel for guiding a light path and scattering and diffusing light; And a mounting slot for mounting the LED module on a side opposite to the light panel and supporting at least one side edge of the light panel, the edge frame having at least one rail groove on an upper surface thereof, And a pair of guide protrusions on the lower surface of which protrusions are formed so as to protrude toward the central portion of the light panel and have a shape corresponding to the rail groove, The slider holder and the latching portion of the slider holder are selectively engaged and supported And a bracket fixed to the ceiling, wherein the hanger part is formed at a predetermined height from the ceiling at both ends of the lock.

Thus, the present invention can be quickly and easily installed by a simple operation even when there is no hole for inserting a PSU or the like in the ceiling or it is not possible to drill a hole, thereby improving convenience and efficiency of the installation work and maintaining a solid installation state .

According to a preferred embodiment of the present invention, a spring member for imparting an elastic force to the rail groove of the edge frame so that the slider holder returns to the original fixed position when the slider holder is moved is installed, .

According to another preferred embodiment of the present invention, since the stopper is provided on the rail groove of the edge frame to restrict the movement of the slider holder within a predetermined range, it is possible to maintain a more rigid mounting state.

In another preferred embodiment of the present invention, the PSU mounting portion for mounting the LED power supply unit to the bracket is formed, thereby stably protecting the LED power supply unit without exposure, and can be installed more easily and easily.

According to another aspect of the present invention, there is provided a rail slider comprising: a plurality of stop grooves formed on a rail groove of the edge frame at regular intervals along a longitudinal direction thereof; A stopper member may be formed to prevent the slider holder from being freely moved while being hooked.

Thus, according to the present invention, the fixing position of the slider holder and the bracket can be easily adjusted and maintained more stably by the coupling force between the stopper member and the stop groove, and furthermore, there is no hole for inserting the PSU or the like in the ceiling, It is possible to install them quickly and easily by simple operation.

According to an aspect of the present invention, there is provided an apparatus for mounting a slider holder on a ceiling, the slider holder comprising: The light fixture consisting of a combination of light panel, LED module, edge frame and power supply unit can be firmly installed at a certain height from the ceiling.

Therefore, the present invention is simple and easy to install on a ceiling, and can be installed without a hole for embedding a power supply unit (PSU) unlike a conventional one in a ceiling installation process. There is no need to drill a separate hole for installation, thereby improving the convenience and efficiency of the installation work and drastically shortening the time required for installation.

Further, the present invention is a simple operation of pushing the slider holder to a position where the slider holder does not cause contact interference with the rack rejection of the bracket when the power supply unit is replaced or repaired, So that the replacement and repair work of the power supply unit can be performed more quickly and easily.

Fig. 1 is a perspective view of a part of an LED flat panel luminaire according to the first embodiment of the present invention.
FIG. 2 is a perspective view showing a state in which the respective components of the LED flat panel luminaire according to the first embodiment of the present invention are combined. FIG.
3 is an enlarged sectional view of the LED flat panel luminaire according to the first embodiment of the present invention.
4 is a perspective view showing only a slider holder, a spring member and a corner cap in the structure of the LED flat panel luminaire according to the first embodiment of the present invention.
5 is a local plan view showing an operating state of the LED flat panel luminaire according to the first embodiment of the present invention.
6 is a local side sectional view showing an LED flat panel luminaire according to a second embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and they are to be construed to mean concepts that are consistent with the technical idea of the present invention and interpretations that are commonly or commonly understood in the technical field.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

Hereinafter, some of the accompanying drawings disclose an exaggerated or simplified illustration of the local part for convenience and clarity of description and understanding of the structure and operation of the technology, and do not precisely match the actual size.

In addition, when a component includes any component, it means that the component may include other components, not excluding other components, unless specifically stated otherwise.

In the following description, when the LED flat panel luminaire according to the present invention is installed on a structure such as a ceiling or a wall surface, the side facing the structure is defined as a top surface, and the side on which light is emitted toward the inside of the top surface is defined as a bottom surface do.

≪ Embodiment 1 >

1 to 5, the LED flat panel luminaire according to the first embodiment of the present invention includes a light panel 10, an LED module 20, an edge frame 30, a slider holder 40, And includes a bracket 50 and a spring member 60.

The light panel 10 has a function of converting a point light source into a surface light source by inducing a light path and scattering and diffusion.

That is, the light panel 10 realizes a light distribution characteristic that uniformly diffuses the light of the point light source, which is emitted to the LED module 20, to the entire surface and emits the light uniformly and stably, Thereby maximizing the efficiency of illumination.

The light panel 10 includes a light guide plate 13 for uniformly transmitting light emitted to the LED module 20 to the entire surface of the light guide plate 13 and a light guide plate 13 laminated or attached to the upper surface of the light guide plate 13, And a reflecting plate 12 which reflects the light emitted from the LED module 20 to the light guide plate 13 and a light guide plate 13 which is stacked or attached to the lower surface of the light guide plate 13 to scatter and diffuse light incident through the light guide plate 10, A diffusion plate 14 for converting the light of the light source into light of a planar light source and emitting the light evenly toward the outside of the room or the like and the light emitted through the light guide plate 13 laminated or attached to the upper surface of the reflective sheet 12, And a back cover 11 for protecting the upper surface of the light guide plate 13 as well as a heat radiation effect.

That is, the light generated by the LED module 20 located on the side surface of the light guide plate 13 flows into the light guide plate 13 and strikes the reflected paper 12 stacked on the upper surface thereof to scatter or diffuse the light, The light is converted into the surface light source through the diffusion plate 14 laminated on the lower surface of the light guide plate 13 and is emitted to the front surface.

Here, the light guide plate 13 may be formed of a transparent resin such as acrylic resin (PMMA), polycarbonate resin, amorphous polyolefin resin, etc., and a dot printing method or a "V" A certain pattern may be formed.

The diffuser plate 12 and the diffuser plate 14 may be realized in the form of a film. In particular, examples of the diffuser plate 14 may be a combination of a transparent thermoplastic resin and a low molecular liquid crystal or a combination of a polyvinyl alcohol and a low molecular liquid crystal And may be implemented by further including an acrylic diffusing agent or a light absorbing material, or by forming a fine pattern.

In addition, the back cover 11 may be formed of an aluminum plate or the like having a good thermal conductivity to smoothly discharge the heat generated from the LED module 20, and the rim portion of the back cover 11 may include a light guide plate 13, They are held together by the edge frame 30, that is, stably fixed to the support groove 33. [

The LED module 20 is inserted into the mounting slot 31 of the edge frame and emits light when power is supplied to uniformly irradiate the light toward the side of the light guide plate 13 of the light panel 10.

That is, the LED module 20 is mounted on the mounting slot 31 of the edge frame 30 facing at least either one of the edge frames 30 that surround and support the four sides of the light panel 10 in a rectangular frame shape And the light is uniformly incident into the light guide plate 13 when the power is supplied, and the incident light is reflected, refracted and diffused by the reflection paper 12 and the diffusion plate 14 of the light panel, .

Here, the LED module 20 may have a structure in which a plurality of light emitting devices, which are mounted on a strip-shaped PCB circuit board at regular intervals, emit light, and a high-brightness white LED (Light Emitting Diode) Most preferably, organic EL (electroluminescence) or the like may be employed.

The light emitting elements of the LED module 20 are connected by a circuit wiring on a PCB circuit board and the ends of the light emitting elements are connected to a power supply unit by a connector (not shown) to receive power or exchange electric signals, A heat dissipating member for dissipating the heat generated in the heat dissipating unit to the outside may be provided.

The edge frame 30 surrounds the side edges of the light panel 10 and supports the LED module 20 to protect the LED module 20.

In other words, the edge frame 30 is provided in the form of a polygonal frame having an illumination space at the center thereof in a combination of at least three or more. In the embodiment of the present invention, the edges of the rectangular frame 30 are wrapped and supported Four straight lines are assembled in a rectangular frame shape, but the present invention is not limited thereto and various shapes can be used.

A support groove 33 is formed in a side surface of the edge frame 30 opposite to the light panel 10 so that a part of the rim of the light panel 10 is inserted and engaged with the support panel 33, A rail slot 32 for guiding the sliding movement of the slider holder 40 is formed on each of upper surfaces of the mounting slot 31 for mounting the LED module 20 in the width direction of the edge frame 30 And are formed in parallel in parallel at regular intervals.

Here, the mounting slot 31 is formed to insert the circuit board of the LED module 40, and a part of the wall between the mounting slot 31 and the supporting groove 33 is formed by the light emitted from the light emitting device of the LED module 20, And is formed so as to communicate with the support groove 33.

At least one or more rail grooves 32 are formed along the longitudinal direction of the edge frame 30 so that the upper surface of the edge frame 30 in the state where the guide protrusions 42 of the slider holder 40 are inserted therein So that the width of the inner wall surface is narrower than the width of the bottom surface.

The edge frame 30 may be formed using an extrusion process such as an aluminum profile so as to stably incorporate the LED module 20 and protect it from the external environment.

However, the present invention is not limited thereto. For example, when the edge frames 30 are arranged in such a manner that both ends of the edge frames 30 are vertically abutted with each other, the friction stir welding (friction stir welding) or the like.

In addition, the edge frame 30 may be integrally formed with a radiating fin (not shown) for increasing the contact area with the air so as to radiate the heat generated from the LED module 20 to the outside .

On the upper surface of the edge frame 30, a reinforcing bracket 90 may be fixed on the upper surface of the edge frame 30 to reinforce the bonding strength and to prevent the edge frame 30 from being firmly fixed by preventing warpage or distortion. have.

The slider holder 40 is slidably mounted on both sides of the upper surface of the pair of edge frames 30 facing each other among the four edge frames 30.

On one side surface of the slider holder 40, a latching portion 41 having a predetermined width is protruded toward the central portion of the light panel 10 so as to be stably in surface contact with the row rejection 51 of the bracket, At least one guide protrusion 42 having a shape corresponding to the groove 32 is formed.

That is, the slider holder 40 is slidable along the rail groove 320 of the edge frame by the guide protrusion 42 formed so as to correspond to the rail groove 320 of the edge frame as shown in FIG. 3, And the engaging portions 41 are formed on the upper surface of the light panel 10 so as to be spaced apart from each other by a predetermined distance.

Here, the guide protrusion 42 may be formed to be coupled to any one of the plurality of rail grooves 320, but may be formed in parallel with the rail grooves 320 at a predetermined interval, It is possible to more effectively and stably support the overall weight received in the state of being attached to the body.

The outer side surface and the upper surface of the slider holder 40 are formed in the form of a plurality of grooves or protrusions arranged at regular intervals so as to prevent sliding during sliding operation to enable stable sliding movement .

It is preferable that the thickness of the outer side surface of the slider holder 40 is minimized so that the lower surface of the slider holder 40 does not obscure the lower surface of the edge frame 30. The lower edge portions of both ends of the slider holder 40, It is preferable to form the inclined surface inclined obliquely to slip while being in contact with the side surface of the row rejection 51 of the visual bracket.

The upper surface of the bracket 50 is tightly fixed to the ceiling so that an illumination lamp composed of the edge frame 30 and the power supply unit on which the light panel 10 and the LED module 20 are mounted is combined with the slider holder 40, And it functions to maintain the state of being installed safely at a predetermined height.

That is, the bracket 50 is formed in an 'H' shape when seen in a plan view, and the left and right ends of the bracket 50 are provided with latching portions 41 corresponding to the latching portions 41, (Not shown) and a wire wiring hole (not marked) are provided on the upper surface of the central portion of the ceiling so as to be easily fixed by screws to the reinforcing neck of the ceiling or the like Respectively.

Here, the row rejection unit 51 secures a space in which the LED power supply unit (PSU) can be mounted between the bracket 50 and the edge frame 30 while facilitating the engagement of the slider holder with the engagement portion 41 The LED power supply unit (PSU) 51 is provided between the row rejection 51 and the central part, that is, between the row rejections 51 at both ends, The PSU mounting portion 52 may have a width and a height that can accommodate the power supply unit (PSU) in the up, down, left, and right directions.

5, the bracket 50 is connected to both sides of the edge frame 30, which face each other, in the vertical direction when seen in plan view, as shown in Fig. 5 The lengths of the widthwise lateral widths of the slider holders 40 are set to correspond to the intervals between the slider holders 40. That is, The engagement with the slider holder 40 can be smoothly and stably performed.

Here, the bracket 50 can be formed by aluminum extrusion or bending molding of a thin metal plate by plastic working.

The spring member 60 serves to provide elastic force to quickly return to the original fixed position when the slider holder 40 is moved along the longitudinal direction of the edge frame 30. [

4, the spring member 60 is embedded in the rail groove 32 of the support frame so as to be positioned between the guide protrusion 42 of the slider holder and the corner cap 80 described later, When the slider holder 41 is pushed toward the corner cap 80, the pushing force is always applied to the original fixed position while being compressed and deformed. It is possible to stably maintain the state of being hooked on.

Here, the spring member 60 is preferably made of a stainless steel compression coil spring. However, the spring member 60 is not limited to this, and any one having the same effect can be used.

On the other hand, at least one stopper 70 may be provided on the rail groove 32 of the edge frame to limit the movement of the slider holder 40 within a certain range.

That is, the stopper 70 restricts the distance that the slider holder 40 slides along the rail groove 32 of the edge frame, thereby preventing unnecessarily large sliding movement of the slider holder 40, It is possible to achieve convenience of the apparatus.

For example, the stopper 70 fixed between the pair of slider holders 40 mounted on the rail groove 32 of the same edge frame can be moved by the repulsive force of the spring member 60 When the stopper 70 is fixed between the slider holder 40 and the corner cap 80, the slider holder 40 is engaged with the bracket 50 It can be prevented from moving unnecessarily or excessively toward the corner cap 80. [

Here, the stopper 70 can be easily and firmly fixed to the rim of the opening of the rail groove 32 by fastening engagement using a screw or the like.

The corner frame 80 may further include a corner cap 80 coupled between both ends of the edge frames 30 so as to maintain a state of engagement between the four edge frames 30.

In other words, the corner cap 80 is formed in a shape of 'A' and is fitted in the rail grooves 32 of neighboring corner portions between the edge frames 30 in a fitting manner, And functions to firmly maintain the shape of the rectangular frame body connected to each other in a state of being perpendicular to each other.

The operation of the LED flat panel luminaire according to the first embodiment of the present invention will now be described.

First, a top surface of a central portion of a bracket 50 is closely attached to a ceiling at a position where the LED flat panel luminaire of the present invention is to be installed, and then a power supply unit (PSU) is inserted into the PSU mounting portion 52 And the engaging portion 41 of the slider holder is moved in the leftward direction, as shown in Fig. 5, in a state in which the slider holder 40 does not cause contact interference with the rack rejection 51 of the bracket, When the slider holder 40 is pushed to the right, that is, to cause contact interference with the row rejection 51 of the bracket, the slider holder 40 is moved to its own weight The light panel 10 and the edge frame 30 are engaged with the guide protrusion 42 of the slider holder and the edge frame 30 of the slider holder by the hooking portion 41 of the slider holder, Of By engagement between ilhom 32 it is stably maintained in the state with the bracket 50.

In the case where the spring member 60 is embedded in the rail groove 32 of the edge frame, when the slider holder 40 is pushed in the left direction, which is a position not causing contact interference with the rack rejection 51 of the bracket, When the user releases the force to push the slider holder 40 in the left direction in this state, when the user, such as an operator, releases the force to push the slider holder 40 in the leftward direction, the accumulated elastic energy action of the spring member 60 Thereby quickly returning to its original position.

That is, the light panel 10, the LED module 20, and the edge frame 30 are assembled with a simple operation of adjusting the position so that the engaging portion 41 of the slider holder comes into contact with the row rejection 51 of the bracket It is possible to obtain a satisfactory fastening property in which the illuminating lamp can be firmly mounted in a state of being separated from the ceiling at a predetermined height.

Therefore, even if there is no hole for inserting the power supply unit (PSU) in the ceiling due to the condition of the installation site such as the general house, or the like, it can be installed easily and conveniently in general purpose. It is possible to reduce the number of work hours and work time significantly, because it is unnecessary to drill a hole for purchasing a power supply unit (PSU) have.

Furthermore, when maintenance such as replacement or repair is required due to a failure of the power supply unit (PSU) in the state of being installed on the ceiling, the slider holder 40 is moved to the rack rejection 51 of the bracket Since the contact interference with the rack rejection 51 of the bracket is released when the slider holder 41 of the slider holder is pushed in the left direction that does not cause the contact interference, the light panel 10, the LED module 20, (PSU) inserted into the PSU mounting portion 52 of the bracket can be quickly and easily replaced or repaired. Therefore, unlike the conventional one, the LED flat plate lighting fixture is fixed to the ceiling and the supporting screws are separated and removed. Then, the power supply unit (PSU) is pulled out from the ceiling and replaced or repaired. It is possible to improve convenience and efficiency of work because there is no need to fix the LED flat panel luminaire closely with the ceiling by fastening it with screws.

In addition, it is not necessary to form a screw hole in the corner cap 80 or the like, and since the screw or the like is not exposed through the screw hole, the deterioration of the design aesthetic feeling can be prevented.

≪ Embodiment 2 >

Hereinafter, among the constituent elements of the LED flat panel luminaire according to the second embodiment of the present invention, constituent elements having the same or similar operational effects as those of the above-described first embodiment are denoted by the same reference numerals, The description is omitted.

6, in the LED flat panel luminaire according to the second embodiment of the present invention, a plurality of stop grooves 35 are formed on the rail grooves 32 of the edge frame at regular intervals along the longitudinal direction thereof And a stopper member (not shown) for preventing the slider holder 40 'from being freely moved while being resiliently hooked on the stopper groove 35 in the sliding operation on the slider holder 40' at a position corresponding to the stopper groove 35 45 are formed.

That is, the stop groove 35 and the stopper member 45 specifically adjust the position of the slider holder 40 'with respect to the edge frame 30 and can stably maintain the adjusted position, 'Of the slider holder 40' can be prevented from being moved by itself and the feeling of clicking when moving the slider holder 40 'can be sensed step by step, thereby improving convenience and safety of use.

Here, the stop groove 35 can be separately processed and attached to the bottom surface of the rail groove 32, and the stopper member 45 can be formed by injection molding integrally with the slider holder 40 '.

Particularly, the stopper member 45 is formed by forming a groove on the lower surface of the slider holder 40 ', incorporating a compression coil spring in the groove, mounting the spherical ball on the lower end of the compression coil spring, The ball may be elastically lifted and lowered with respect to the slider holder 40 'by the action of the compression coil spring.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be obvious to those skilled in the art that the present invention can be widely applied to other embodiments.

Therefore, it is to be understood that modifications and variations of the features of the present invention are intended to be included within the spirit and scope of the present invention.

10: light panel 11: back cover
12: reflection sheet 13: light guide plate
14: diffusion plate 20: LED module
30: Edge frame 31: Mounting slot
32: rail groove 35: stop groove
40: Slider holder 41:
42: guide projection 43: non-slip part
45: stopper member 50: bracket
51: Deny row 52: PSU mounting part
60: spring member 70: stopper
80: Corner cap 90: Reinforcement bracket

Claims (5)

A light panel 10 for guiding the path of light and scattering and spreading;
An LED module (20) for emitting light toward the side of the light panel (10) when light is supplied thereto;
A mounting slot 31 for mounting the LED module 20 is formed on a side of the light panel 10 which faces the light panel 10 while supporting the side panel of the light panel 10, An edge frame 30 on which at least one edge frame 30 is formed;
(41) is protruded toward the central portion of the light panel (10), and the rail groove (41) is formed on the lower surface of the edge panel A slider holder (40) in which at least one guide protrusion (42) of a shape corresponding to the slider holder (32) is formed. And
A bracket 50 having an upper surface fixed to the ceiling and having a row rejection 51 at a predetermined height from the ceiling so as to selectively hold the latching portion 41 of the slider holder at both ends thereof;
The LED flat panel luminaire comprising:
The method according to claim 1,
And a spring member (60) is provided in the rail groove (32) of the edge frame to apply an elastic force to return the slider holder (40) to a predetermined fixed position when the slider holder (40) is moved.
3. The method of claim 2,
And a stopper (70) for restricting movement of the slider holder (40) within a predetermined range on the rail groove (32) of the edge frame.
The method according to claim 1,
A plurality of stop grooves 35 are formed on the rail groove 32 of the edge frame at regular intervals along the longitudinal direction thereof and the stop groove 35 is formed on the slider holder 40 corresponding to the stop groove 35, And a stopper member (45) for preventing the slider holder (40) from being freely moved while being elastically hooked on the slider holder (35).
5. The method according to any one of claims 1 to 4,
And at least one PSU mounting portion (52) for mounting the LED power supply unit to the bracket (50).

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