KR101902514B1 - LED planar light lamp hanging on the ceiling - Google Patents

Abstract

The present invention relates to an LED planar light lamp for a ceiling, in which four frames consisting of a lighting frame into which a light guide plate is inserted and coupling frames coupled with side covers are connected to each other by an ′L′-shaped side covers and formed in a square frame, an LED module mounted therein with an LED is mounted inside a part of the frame, and the light guide plate is placed in a space portion defined by the square frame. The lamp frame includes upper and lower frames parallel to each other and spaced from each other; inner frames for connecting ends of the upper and lower frames, respectively; an anti-collision protrusion protruding inside the upper frame or the lower frame adjacent to the inner frame and having a module insertion groove into which the LED module is inserted; and a mount protrusion protruding inside the upper frame or the lower frame adjacent to the inner frame, which is absent from the anti-collision protrusion, and offset with the anti-collision protrusion, wherein the height of a collision preventing space from an end of the anti-collision protrusion to an end of the mount protrusion is smaller than the thickness of the light guide plate, so that the light guide plate is prevented from being moved by the anti-collision protrusion even in an external impact, thereby protecting the LED, and the height of the collision preventing space formed by the anti-collision protrusion and the mount protrusion is smaller than the thickness of the light guide plate, so that the light guide plate is prevented from being inserted into the collision preventing space, thereby protecting the LED.

Description

{LED planar light lamp hanging on the ceiling}

The present invention relates to an LED ceiling light fixture, and more particularly, to an anti-collision protrusion for preventing movement of a light guide plate inside a frame so that a light guide plate does not apply an impact to an external impact, And an LED ceiling light which is inserted into a groove formed by the coupling piece coupling projections so that the frame and the corner bracket are firmly engaged and the side cover is prevented from being loosened during transportation.

In recent years, LEDs (Light Emitting Diodes) have attracted a great deal of attention as light sources for various lighting devices. LED lighting using LEDs does not use mercury or discharge gas like fluorescent lamps, While it can be used semi-permanently for about 1,500 hours of incandescent lamps and about 100,000 hours or more for a very long time as compared with 10,000 hours for fluorescent lamps, and power consumption can be reduced by 80% or more as compared with conventional lighting apparatuses.

A variety of LED illumination lamps have been developed and used by using the characteristics of these LEDs. Among them, in the case where the light is irradiated indirectly through a separate light guide plate in a state of being installed in the horizontal direction from the inner side of the frame attached to the ceiling, Ceiling lighting has been developed and used.

In the LED ceiling light of the prior art, the LED ceiling light is composed of four frames 1 connected to each other by a 'A' -shaped side cover to form a 'ㅁ' -shaped or square frame, and LEDs 3, a cover 7, a reflection plate 6, a light guide plate 4, and a diffusion plate 5 are stacked on the space portion of the rectangular frame.

That is, the LED module 2 is installed to irradiate light in the horizontal direction on the inner surface of the frame 1, and the cover 7, the reflection plate 6, the light guide plate 4, Shaped frame and is closely attached to the LED module 2 mounted on the frame 1 in a state where the LED module 3 is integrated with the frame so that the light emitted from the LED module 3 constituting the LED module 2 And the light is indirectly irradiated to the room through the light guide plate.

A supporting bracket 1c for connecting one frame 1 and the other frame facing one frame 1 is formed on the outside of the frame 1 and power is supplied to the LED module 2 on the supporting bracket 1c A converter 9 which is electrically connected to the LED module 30 is mounted.

In the LED ceiling light of the prior art, the cover 7, the reflection plate 6, the light guide plate 4 and the diffusion plate 5 are inserted into the inner surface of the frame 1, The light guide plate 4 is slid in the direction of the LED 3 from the inner surface of the frame 1 by the transportation or external impact and the LED 3 is contacted with the LED 3, There is a problem in that a defective product is generated in the moving process due to damage to the substrate 3.

In addition, in the above-mentioned prior art, the structure for combining the frame 1 and the side cover is simple and the structure like the corner bracket is not suitable, and the side cover coupled to the square frame loosens the coupling during transportation.

The present invention has been made in an effort to solve the problems of the prior art described above, and it is an object of the present invention to provide an anti-collision protrusion, which protrudes inside a frame and is positioned between a light guide plate and an LED, The light guide plate is prevented from being brought into contact with the LED to prevent damage to the LED, and the thickness of the anti-collision protrusion is set to 0.6 to 2.0 mm so that light emitted from the LED can be incident on the light guide plate smoothly, A plurality of engaging projections and a plurality of engaging pieces protruding from the side cover are formed in the frame of the portion which is not engaged with the engaging projections and inserted into the grooves constituted by the engaging projections so that the frame and the corner bracket are firmly engaged, And an LED ceiling surface lighting lamp.

In the present invention, four frames each composed of a lighting frame into which the light guide plate is inserted and a coupling frame coupled with the side cover are connected to each other by the 'A' -shaped side cover to constitute a square frame, and an LED And a light guide plate is placed in a space formed by the rectangular frame, wherein the illumination frame includes upper and lower frames that are parallel and spaced apart from each other, and an inner frame that connects one end of the upper frame and the lower frame, And an anti-collision protrusion protruding inside the upper frame or lower frame in the vicinity of the inner frame and constituting a module insertion groove into which the LED module is inserted.

Further, according to the present invention, a protrusion protruding inside the upper frame or lower frame in the vicinity of the inner frame where the anti-collision protrusion is not formed and being configured to be shifted from the anti-collision protrusion is formed; And the height of the collision preventing space from the end of the collision-preventing protrusion to the end of the protrusion is smaller than the thickness of the light guide plate.

Further, in the present invention, the thickness of the collision-preventing projection is 0.6 to 2.0 mm.

Further, in the present invention, the joining frame comprises a horizontal frame extending from the inner frame and a vertical frame extending vertically at the end of the horizontal frame; The vertical frame is constituted by a first engaging projection and a second engaging projection projecting parallel to the horizontal frame and spaced apart from the horizontal frame in the direction of the inner frame; The inner frame includes a third engaging projection and a fourth engaging projection protruding corresponding to the first engaging projection and the second engaging projection in the direction of the vertical frame.

The side cover may include a bottom surface formed in a plate shape, a vertical surface extending perpendicularly to the outer edge of the bottom surface, a plate-shaped protrusion protruding in a direction perpendicular to the inner surface of the vertical surface, spaced apart from the bottom surface, And a second coupling piece projecting in a direction perpendicular to the inner surface of the vertical plane and spaced apart from the first coupling piece.

Further, in the present invention, the inner frame, the horizontal frame, the vertical frame, the first engaging projection, and the third engaging projection form a first engaging piece insertion port which is a space formed by the inner frame, the horizontal frame, the vertical frame, Wherein the inner frame, the vertical frame, the first engaging projection, the third engaging projection, the second engaging projection and the fourth engaging projection form a second engage-piece insertion port which is a space formed by the inner frame, the vertical frame, the first engaging projection, The first engaging piece is inserted into the first engaging piece insertion port and the second engaging piece is inserted into the second engaging piece insertion port so that the four frames constitute a square frame.

In addition, the present invention is constituted by a plate-shaped 'A' protruding in an inward direction integrally at both ends of a vertical surface of the side cover, and constitutes a receiving part for receiving the lower part of the coupling frame.

The present invention has the effect of protecting the LED by preventing the light guide plate from being moved by the collision preventing protrusion even in an external impact.

Further, the height of the collision preventing space formed by the collision preventing protrusions and the protruding protrusions is smaller than the thickness of the light guide plate, so that the light guide plate is not inserted between the collision preventing space heights even in the external impact, thereby protecting the LED.

In addition, according to the present invention, the thickness of the collision preventing protrusion is 0.6 to 2.0 mm, so that the light emitted from the LED is efficiently incident on the light guide plate.

Further, in the present invention, the two engagement pieces of the first engagement piece and the second engagement piece are inserted into the frame, so that the engagement between the side cover and the frame is good and the frame is not easily twisted.

In addition, the present invention has the effect that the lower part of the joint frame is housed in the receiving piece having the 'a' shape formed on the vertical surface of the side cover, thereby enhancing the bonding force between the frame and the side cover.

1 is a cross-sectional view of a prior art LED side surface illumination device;
2 is a perspective view and a partially enlarged view of the present invention;
3 is a top and bottom perspective view of the side cover of the present invention.
Fig. 4: Combination of frame and corner bracket of the present invention. Fig.
5 is a cross-sectional view of another embodiment of the anti-collision protrusion of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2 to 6 attached hereto.

The LED ceiling illuminating lamp 1 of the present invention is characterized in that four of the frame 10 composed of the illuminating frame 11 into which the light guide plate 50 is inserted and the engaging frame 12 engaged with the side cover 20 are ' An LED module 30 mounted with the LED 31 is mounted in a part of the frame 10 and the frame 10 is connected to the frame 10 by the side cover 20, And the light guide plate 50 is placed in a space where the light guide plate 50 is placed.

The rectangular frame 10 is constituted by a pair of opposing frames 10-1 and a pair of frames 10-2 formed at right angles to a pair of frames 10-1, Rectangular shape.

In the case of constituting the square frame, the lengths of a pair of frames 10-1 and the pair of frames 10-2 are all the same. In this case, any one pair of frames 10-1, In the case where the LED module 30 in which the LED 31 is mounted is inserted in another pair of frames 10-2 and is configured as a rectangular frame, a pair of frames 10-1 and a pair of frames The length of the LED module 10-2 is different. In this case, the LED module 30, in which the LED 31 is mounted, is inserted in a frame having a long length.

The frame 10 is completed by extruding aluminum using an extrusion die and cutting the length and the shape of the same in the longitudinal direction into an appropriate length.

The LED module 30 is inserted into the frame 10 in the longitudinal direction so that the length thereof is equal to or slightly shorter than the length of the frame 10 so as to electrically connect the LEDs 31. [ And a plurality of LEDs 31 mounted on the LED substrate and electrically connected to each other by an electrode circuit. The LED substrate is formed of a plate-like material of a commonly used resin-based material, .

A plurality of LEDs 31 are mounted on one side of the copper foil pattern of the LED substrate and the LED module 30 is slidably inserted into the module insertion groove c of the frame 10 toward the center of the rectangular frame 10, 31 are guided by the light guide plate 50 to indirectly illuminate the bottom surface of the room.

An aluminum plate 70, a reflection sheet 60, a light guide plate 50 and a diffusion plate 40 are sequentially stacked on a space portion constituted by the rectangular frame 10, -1) and the lower frame 11-2 so as to be accommodated in the rectangular frame 10. [0064] As shown in FIG. In a state where the LED ceiling light 1 is fastened to the ceiling, the diffuser plate 40 is laid in a direction to illuminate the room and the aluminum plate 70 is laid facing the ceiling.

The aluminum plate 70 may be a square or rectangular frame 10 made of a pair of frames 10-1 or another pair of frames 10-2 as a square or rectangular panel of aluminum, And the frame 10 serves as a structure for holding a square or a rectangular mold.

The reflective sheet 60 is positioned on the lower side of the aluminum plate 70 in a state where the LED plate ceiling light 1 is fastened to the ceiling in front of the aluminum plate 70 so that light emitted from the LED 31 is transmitted to the aluminum plate 70 70).

The light guide plate 50 is a square or rectangular panel made of transparent acrylic and positioned at a lower side of the reflective paper 60 in the state where the reflective sheet 60 is in front of the reflective sheet 60, A scratch may be formed on the front surface or both surfaces of the light guide plate 50 to uniformly distribute the light over the entire area of the panel and to scatter light, The thickness of the dendrite can be made smaller than the thickness of the other planes, that is, the cross section in the vicinity of the four-room rim is formed in two stages so that the rim portion has a smaller thickness than the central portion.

The diffuser plate 40 is a square or rectangular panel that is inserted into a BLU (Back Light Unit) serving as a light source of a lighting device such as a general lighting cover, a light panel, a liquid crystal or the like, In a state where the illumination lamp 1 is fastened to the ceiling, light emitted from the LED 31 is incident on the diffusion plate through the light guide plate 50 and diffuses along the surface to illuminate the interior.

A converter (not shown) is formed on the upper surface of the aluminum plate 70 in a state where the external upper surface of the aluminum plate 70, that is, the LED ceiling surface illumination light 1 is fastened to the ceiling, and the converter drives the LED 31 A drive circuit and a semiconductor device are mounted on a resin-based substrate for converting an alternating current inputted through an electrode line into a direct current suitable for the LED 31, and supplies the DC current to the LED module 30. [

The converter and the external electrode are electrically connected to each other by an electrode line and a wire connected to the converter is drawn into the frame 10 to be electrically connected to the LED module 30 through wiring or the like so that the LED ceiling- And is electrically connected to the module 30.

The frame 10 is composed of an illumination frame 11 into which the light guide plate 50 is inserted and an engagement frame 12 which is engaged with the side cover 20. The illumination frame 11 is divided into an upper frame 11-1 and the lower frame 11-2 are constituted and an inner frame 11-3 connecting one end of the upper frame 11-1 and the lower frame 11-2 is constituted and the inner frame 11 13-1 and 13-2 constituting the module insertion groove c protruding into the upper frame 11-1 or the lower frame 11-2 in the vicinity of the module insertion groove c in which the LED module 30 is inserted, , 13-2).

The upper frame 11-1 has a length equal to the length of the frame 10 and has a strip shape parallel to the ceiling surface in a state where the LED ceiling light 1 is installed on the ceiling, 2 is configured to have a length equal to the length of the frame 10 and is configured in a strip shape parallel to the ceiling surface and spaced apart from the upper frame 11-1 by a predetermined distance in a state where the LED ceiling light 1 is installed on the ceiling And the upper frame 11-1 and the lower frame 11-2 are spaced apart from each other at regular intervals to form a space portion.

The inner frame 11-3 has a length equal to the length of the frame 10 and connects one end of the upper frame 11-1 to one end of the lower frame 11-2, -3), the sectional shape of the upper frame 11-1 and the lower frame 11-2 is 'c'. The lower frame 11-2 has a straight strip shape or a bent strip shape depending on the thickness of the aluminum plate 70, the reflection sheet 60, the light guide plate 50 and the diffusion plate 40, The sectional shape of the LED 11-1 may be a straight band or a bent band depending on the thickness of the aluminum plate 70, the reflection sheet 60, the light guide plate 50 and the diffusion plate 40, It is preferable that the lighting lamp 1 is formed in a straight strip in consideration of aesthetic appearance in a state where the lighting lamp 1 is installed on the ceiling.

When the pair of frames 10-1 and 10-2 are coupled to the side cover 20 to constitute the rectangular frame 10, the rectangular frame 10 is fixed to the upper frame 11- 1) and the lower frame 11-2 are opposed to each other so that the LEDs 31 are also opposed to each other.

The collision preventing protrusions 13-1 and 13-2 are provided at positions spaced apart from each other in the forward direction of the inner frame 11-3, that is, the center of the rectangular frame 10, When the upper frame 11-1 is constituted by the lower frame 11-2 and the lower frame 11-2 is formed integrally with the lower frame 11-2, 11-1 and the height thereof is slightly higher than the height of the diffusion plate 40 or is slightly higher than the height of the aluminum plate 70 and the reflection sheet 60 stacked.

The collision prevention protrusions 13, 13-1 and 13-2 are formed in the upper frame 11-1 or the lower frame 11-2, The illumination frame 11 is formed in a state in which the module insertion groove c in which the LED module 30 is slidably inserted and the aluminum plate 70, the reflection sheet 60, the light guide plate 50 and the diffusion plate 40 are sequentially stacked And a space portion to be inserted is formed.

A space formed in the direction of the inner frame 11-3 with respect to the collision preventing protrusions 13, 13-1 and 13-2 is inserted into the module insertion groove c and the space formed toward the center of the direction frame is made of aluminum The plate 70, the reflection sheet 60, the light guide plate 50, and the diffusion plate 40 are accommodated.

When the collision preventing protrusions 13, 13-1 and 13-2 are formed in the upper frame 11-1, the height of the diffusion plate 40 is slightly higher than the height of the diffusion plate 40, The light guide plate 50 and the diffusion plate 40 are sequentially stacked and placed in the space portion constituted by the upper frame 11-1 and the lower frame 11-2, the collision preventing protrusions 13, 13-1 and 13-2, the diffusion plate 40 is prevented from moving in the direction of the module insertion groove c.

When the collision preventing protrusions 13, 13-1 and 13-2 are formed in the lower frame 11-2, the height of the aluminum plate 70 and the reflecting sheet 60 is slightly higher than the height of the aluminum plate 70 and the reflecting sheet 60, 70, the reflection sheet 60, the light guide plate 50 and the diffusion plate 40 are sequentially stacked and placed in a space portion constituted by the upper frame 11-1 and the lower frame 11-2, The movement of the aluminum plate 70 and the reflection paper 60 in the direction of the module insertion groove c is prevented by the collision preventing protrusions 13, 13-1, 13-2.

When the LED ceiling light 1 is moved in a state where the LGP ceiling light 1 is inserted into a space defined by upper and lower frames, when the LGP ceiling light 1 collides with an object or receives an external impact, 13-1 of the frame 10 constituted by a pair of the frame 10-1 and the pair of the other frame 10-2 and the side cover 20, And 13-2 so that the light guide plate 50 is moved in the space defined by the upper frame 11-1 and the lower frame 11-2 in the direction of the module insertion groove c Movement is blocked.

Is projected inside the upper frame (11-1) or lower frame (11-2) near the inner frame (11-3) in which the collision preventing projections (13, 13-1, 13-2) And the pawl 14 is configured to be displaced from the projections 13, 13-1, 13-2.

The protrusion 14 is formed at a position shifted in the center direction of the rectangular frame 10 at the position of the collision prevention protrusions 13, 13-1, 13-2, and has a length equal to the length of the frame 10 When the upper frame 11-1 is constituted by the upper frame 11-1 or the lower frame 11-2 and the upper frame 11-1 is formed integrally with the lower frame 11-2 in the direction of the lower frame 11-2, The height of the diffusion plate 40 may be the same as the height of the aluminum plate 70 and the reflection sheet 60, Height.

When the protrusion 14 is formed on the lower frame 11-2, the protrusion 14 is formed to have the same height as the lamination of the aluminum plate 70 and the reflection sheet 60. The aluminum plate 70, the reflection sheet 60, The upper frame 11-1 and the lower frame 11-2 are stacked in this order and the lower frame 11 and the lower frame 11-2 are stacked in this order, The plate 70 and the reflection sheet 60 are prevented from moving in the direction of the module insertion groove c.

The reflective plate 60, the light guide plate 50, and the diffuser plate 40 (see FIG. 1) are formed to have the same height as the height of the diffuser plate 40 when the protrusions 14 are formed in the upper frame 11-1. And the diffuser plate 40 is fixed to the module insertion groove 12 by the protruding protrusion 14 even when the protrusion 14 is collided or shocked in a state where it is placed in the space portion constituted by the upper frame 11-1 and the lower frame 11-2, the movement in the direction (c) is blocked.

The collision prevention protrusions 13, 13-1 and 13-2 and the protrusion 14 are formed in the upper frame 11-1 or the lower frame 11-2, 13-2 and the protrusion 14 of the light guide frame 50. The illumination frame 11 includes a module insertion groove c in which the LED module 30 is slidably inserted, an aluminum plate 70, a reflection sheet 60, a light guide plate 50, And a diffusion plate 40 are stacked in this order.

A space formed in the direction of the inner frame 11-3 with respect to the collision prevention protrusions 13, 13-1 and 13-2 and the inner protrusion 14 is inserted into the module insertion groove c, The reflective plate 60, the light guide plate 50, and the diffusion plate 40 are accommodated.

The height g of the collision preventing space from the end of the collision preventing protrusion 13 to the end of the protrusion 14 is smaller than the thickness y of the light guide plate, The reflection plate 60, the light guide plate 50 and the diffusion plate 40 are sequentially stacked and placed in the space defined by the upper frame 11-1 and the lower frame 11-2, Is not inserted between the collision preventing space heights g, and the movement in the direction of the module insertion groove c is prevented.

In the case where the collision preventing protrusions 13, 13-1, 13-2 are formed in the upper frame 11-1, they are in close contact with the end faces of the four side edges of the light guide plate 50 and the diffuser plate 40, The reflective plate 60 and the light guide plate 50 are attached to the end face of the four side edges of the aluminum plate 70, the reflective sheet 60 and the light guide plate 50, and the protrusion 14 is attached to the bottom frame 11-2 When the upper plate 11 is formed in the upper frame 11-1 in close contact with the end surface of the four edges of the aluminum plate 70 and the reflection sheet 60, do.

Therefore, the aluminum plate 70, the reflection paper 60 and the diffusion plate 40 are brought into close contact with the collision-preventing protrusions 13, 13-1, 13-2 or the protrusion 14, and the light guide plate 50 is brought into close contact with only the collision preventing protrusions 13, 13-1, 13-2 so as to be prevented from moving in the direction of the module insertion groove c even in an external impact, The thickness of the light guide plate 50 is configured to be larger than the collision preventing space height g which is the distance between the end of the collision preventing protrusions 13, 13-1, 13-2 and the end of the landing protrusion 14, (50) is not inserted between the collision preventing space height (g), and the movement in the direction of the module insertion groove (c) is blocked to protect the LED (31). The present invention improves the phenomenon that the lifetime of the LED 31 is shortened by applying an impact to the LED 31 by the light guide plate 50 due to an external impact.

 Since the collision preventing protrusions 13, 13-1 and 13-2 are positioned in the edge direction of the rectangular frame 10 relative to the position detecting protrusions 14, the aluminum plate 70, the reflecting sheet 60, the light guide plate 50, The planar area of the diffusion plate 40 is configured to be larger than the area of the structure in which the area of the structure that is in close contact with the collision prevention protrusions 13, 13-1, 13-2 is in close contact with the positioning protrusion 14.

In order for the light emitted from the LED 31 to enter the light guide plate 50 well, the collision preventing protrusions 13, 13-1, 13-2 are provided on the upper frame 11-1 or the lower frame 11- 2), it is necessary to maintain the strength not to be broken by the external impact, so that the thickness (t) of the anti-collision protrusion is 0.6 to 2.0 mm.

When the thickness of the collision preventing protrusions 13, 13-1 and 13-2 is 0.6 mm or less, the distance between the LED 31 and the light guide plate 50 is short, The protrusions 13, 13-1 and 13-2 are damaged due to an external impact. When the thickness of the protrusions 13, 13-1 and 13-2 is 2.0 mm or more, -1 and 13-2 are strong against the external impact but the distance between the LED 31 and the light guide plate 50 is distant so that the light emitted from the LED 31 does not enter into the light guide plate 50 well.

The coupling frame 12 is constituted by a horizontal frame 12-2 extending integrally from the inner frame and a vertical frame 12-1 extending vertically at the end of the horizontal frame 12-2 When the pair of frames 10-1 and 10-2 are combined with each other to form the rectangular frame 10, the vertical frame 12-1 is arranged at a position corresponding to the four sides of the rectangular frame 10 Respectively.

The first engaging protrusion 15-1, the second engaging protrusion 15-2, the third engaging protrusion 15-3 and the fourth engaging protrusion 15-2 are formed on the horizontal frame 12-2 of the vertical frame 10, 15-4 which are arranged in parallel with the horizontal frame 12-2 and spaced apart from the horizontal frame 12-2 in the direction of the inner frame 11-3, 1 which is constituted by the first engaging projection 15-1 and is projected in parallel with the first engaging projection 15-1 and is spaced apart from the first engaging projection 15-1 in the direction of the inner frame 11-3, The engaging projection 15-2 is formed and the first engaging projection 15-1 is formed between the second engaging projection 15-2 and the inner frame 11-3.

The inner frame 11-3 includes a third engaging projection 15-3 and a third engaging projection 15-3 projecting corresponding to the first engaging projection 15-1 and the second engaging projection 15-2 in the direction of the vertical frame 12-1. And the fourth engaging projection 15-4 are formed. The third engaging projection 15-3 is protruded parallel to the horizontal frame 12-2 and spaced apart from the horizontal frame 12-2 in the direction of the vertical frame 12-1, The first engaging protrusion 15-4 is protruded in parallel with the third engaging protrusion 15-3 and is spaced apart from the first engaging protrusion 15-1 in the direction of the vertical frame 12-1. 4, and a third engaging projection 15-3 is formed between the fourth engaging projection 15-4 and the inner frame 11-3.

The first engaging projection 15-1 and the third engaging projection 15-3 have the same sectional shape and the ends of the first engaging projection 15-1 and the third engaging projection 15-3 are in contact with each other And the sectional shapes of the second engaging protrusions 15-2 and the fourth engaging protrusions 15-4 are the same and the sectional shapes of the second engaging protrusions 15-2 and the fourth engaging protrusions 15-4 are the same The ends are configured not to contact each other.

The inner frame 11-3, the horizontal frame 12-2, the vertical frame 12-1, the first engaging projection 15-1 and the third engaging projection 15-3 are constituted by these A first coupling piece insertion port (a) is formed. The inner frame 11-3, the vertical frame 12-1, the first engaging projection 15-1, the third engaging projection 15-3, the second engaging projection 15-2, The projections 15-4 constitute a second engagement piece insertion port b which is a space formed by these projections.

The horizontal frame 12-2 and the first engaging projection 15-1 are configured in parallel and the horizontal frame 12-2 and the third engaging projection 15-3 are configured in parallel and the vertical frame 12- The upper part of the inner frame 11-3 and the upper part of the inner frame 11-3 are formed in parallel so that the upper part of the inner frame 11-3, the horizontal frame 12-2, the upper part of the vertical frame 12-1, 15-1 and the third engaging protrusions 15-3 is a square in which the first engaging protrusions 15-1 and the third engaging protrusions 15-3 are opened, (A).

The first engaging projection 15-1 and the second engaging projection 15-2 are formed in parallel and the third engaging projection 15-3 and the fourth engaging projection 15-4 are formed in parallel, The lower part of the frame 12-1 and the lower part of the inner frame 11-3 are formed in parallel so that the lower part of the inner frame 11-3, the lower part of the vertical frame 12-1, the first engaging projection 15-1, The third engaging projection 15-3 and the second engaging projection 15-2 and the fourth engaging projection 15-4 are formed by the first engaging projection 15-1 and the third engaging projection 15 3 is opened and the space between the second engaging protrusions 15-2 and the fourth engaging protrusions 15-4 is opened so that the square space becomes the second engaging member inserting opening b.

The side cover 20 includes a bottom surface 21 formed in a plate shape and has a vertical surface 25 extending vertically to the edge of the bottom surface 21 and protruding in a direction perpendicular to the inner surface of the vertical surface 25 Shaped first engagement piece 22 spaced apart from the bottom surface 21 and projecting beyond the end of the bottom surface 21 and protruding in a direction perpendicular to the inner surface of the vertical surface 25 and spaced apart from the first engagement piece 22 Shaped second coupling piece 23 is formed.

The bottom surface 21 of the side cover 20 has a substantially quadrangular plate shape and has one side joined to a pair of frames 10-1 and a pair of frames 10-2 having different sides from each other, The bottom surface 21 is coupled to the frame 10 with the light emitted from the LED 31 illuminated, that is, toward the floor of the room, in a state where the ceiling surface illumination lamp 1 is installed on the ceiling. .

The vertical surface 25 is formed integrally vertically at the outer edge of the bottom surface 21, that is, at an edge of two sides positioned on the outer side of four edges of the bottom surface 21, And is formed into a flange shape protruding integrally perpendicular to the edge of the face.

The first engagement piece 22 is formed in a space constituted by the bottom surface 21 and the vertical surface 25 and protrudes integrally with the vertical surface 25 at a right angle to the inner surface direction and is spaced apart from the bottom surface 21, And is protruded beyond the end of the plate.

The second engaging piece 23 is formed in a space constituted by the bottom surface 21 and the vertical surface 25 and protrudes from the vertical surface 25 in a direction perpendicular to the inner surface direction and is spaced apart from the first engaging piece 22 The first engaging piece 22 is formed between the second engaging piece 23 and the bottom surface 21 and the length of the first engaging piece 22 is made longer than the second engaging piece 23. [ Is longer than the length of the piece (23).

The first engaging piece 22 is inserted into the first engaging part inserting opening a and the second engaging piece 23 is inserted into the second engaging piece inserting opening b so that the four frames 10 are inserted into the rectangular frame 10).

When the frame and the side cover 20 are coupled by any one of the first and second coupling pieces 22 and 23, the coupling support point is connected to the frame 10 and the side cover 20, The frame 10 can be easily twisted and the side cover 20 can be easily separated from the frame 10 and the side cover 20 by the two engaging pieces of the first engaging piece 22 and the second engaging piece 23, It is difficult to separate the frame 10 and the side cover 20 from each other by the plurality of coupling supporting points and the frame 10 is not easily twisted.

The first engaging piece 22 is inserted into the first engage part inserting port a and the second engaging piece 23 is inserted into the second engaging part inserting port b, 3 coupling protrusions 15-3 are positioned between the first coupling piece 22 and the second coupling piece 23 and the horizontal frame 12-2 is fixed, 1 coupling projection 15-1 and the third coupling projection 15-3 while the second coupling piece 23 presses the first coupling projection 15-1 and the third coupling projection 15-3 The first engaging protrusion 15-1 and the third engaging protrusion 15-3 press the second engaging protrusion 15-2 and the fourth engaging protrusion 15-4 so that the first engaging protrusion 15-1 and the third engaging protrusion 15-3 are engaged with each other, The side cover 20 is tightly coupled with the frame 10 and the frame 10 and the side cover 20 are not easily separated from each other.

At both ends of the vertical surface 25 of the side cover 20, the receiving piece 24 is formed in the shape of a letter "A" which is integrally protruded in the inward direction. The receiving piece 24 serves to set the position where the frame 10 is engaged and receives the lower portion of the coupling frame 12 to further strengthen the coupling force between the frame 10 and the side cover 20. [

The first engaging piece 22 is inserted into the first engaging part inserting opening a and the second engaging piece 23 is inserted into the second engaging part inserting opening b so that the frame 10 and the side cover 20 and the vertical plane 25 of the side cover 20 is inserted into the receiving piece 24 is related to the binding force of the frame 10 and the side cover 20 in the vertical direction The coupling between the frame 10 and the side cover 20 is further strengthened by the binding force in the horizontal direction and the binding force in the vertical direction.

The collision preventing protrusions 13, 13-1, and 13-2 are configured such that the plane contacting the light guide plate 50 is a vertical plane and the plane adjacent to the LED 31 is an inclined plane or a curved plane. When the surface of the collision preventing protrusion 13, 13-1, 13-2 adjacent to the LED 31 is formed of an inclined surface or a curved surface, the space is enlarged by the inclined surface or the curved surface, The light emitted from the LED 31 is less disturbed by the inclined surface or the curved surface and the light emitted from the LED 31 is drawn into the light guide plate 50 more.

A corner bracket 80 made of a plate metal is further formed on the back surface of the side cover 20 so that the corner bracket 80 and the side cover 20 are fastened with screws (10) are screwed together so that the overall twist of the LED ceiling surface illumination lamp (1) is prevented, the overall bonding strength is increased, and the perpendicularity of the pair of frames (10-1) . ≪ / RTI >

The corner bracket 80 is connected to the bottom surface 21 of the side cover 20 in parallel and is connected to the ceiling when the bottom surface 21 is not formed, that is, when the LED ceiling light 1 is fastened to the ceiling .

When the upper part of the frame 10, that is, the upper ceiling light 1 is fastened to the ceiling, a pair of frames 10-1 or a pair of frames Shaped frame brackets (not shown) for connecting the frame brackets 10-2 to the frame brackets 10-2 so that the rectangular shape of the frame 10 can be maintained by screwing the frame brackets and the frame 10 together.

The terms or words used in the specification and claims of the present invention are not to be construed in a conventional or dictionary sense and the inventor can appropriately define the concept of the term in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

As described above, the embodiments described in the description of the present invention and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. It is possible to make various modifications within the limit.

It is therefore to be understood that within the scope of the appended claims, the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

1: LED backlight 10: Frame
10-1: a pair of frames 10-2: another pair of frames
11: illumination frame 11-1: upper frame
11-2: lower frame 11-3: inner frame
12: Coupling frame 12-1: Vertical frame
12-2: Horizontal frame 13, 13-1, 13-2:
14: antech projection 15: engaging projection
15-1: first engaging projection 15-2: second engaging projection
15-3: Third coupling projection 15-4: Fourth coupling projection
20: side cover 21: bottom
22: first coupling piece 23: second coupling piece
24: Receiving piece 25: Vertical surface
30: LED module 31: LED
40: diffusion plate 50: light guide plate
60: reflection sheet 70: aluminum plate
80: Corner bracket a: First engaging piece insertion port
b: Second coupling piece insertion port c: Module insertion groove
t: Anti-collision protrusion thickness x: Anti-collision space height
y: thickness of light guide plate

Claims (7)

A frame made up of a lighting frame into which the light guide plate is inserted and a coupling frame coupled with the side cover is connected to each other by the 'A' -shaped side cover to constitute a square frame, and an LED module, And a light guide plate is placed in a space portion constituting the rectangular frame,
The illumination frame includes upper and lower frames that are parallel and spaced apart from each other, an inner frame that connects one end of the upper and lower frames, a module insertion protrusion that protrudes inside the upper frame or lower frame near the inner frame, And the diffusion plate is prevented from being moved in the module insertion groove direction, and a collision preventing projection having a thickness of 0.6 to 2.0 mm is formed;
A protrusion protruding inside the upper frame or lower frame in the vicinity of the inner frame where the collision preventing protrusion is not formed and shifted from the collision preventing protrusion at a position shifted inward from the crash preventing protrusion;
Wherein the height of the collision preventing space from the end of the collision-preventing protrusion to the end of the protrusion is smaller than the thickness of the light guide plate;
Wherein the side covers are formed at both ends of the vertical surface in a shape of a letter "A" protruding in an inward direction as a unitary body, and configured to accommodate a lower portion of the coupling frame;
Wherein the receiving member is provided with a position where the frame is coupled and a coupling force between the frame and the side cover is strengthened and collision with the LED is prevented because the light guide plate is not inserted between the collision- .
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