WO2011004984A2

WO2011004984A2 - Flat illumination device

Info

Publication number: WO2011004984A2
Application number: PCT/KR2010/004315
Authority: WO
Inventors: 강신철
Original assignee: (주)테크자인라이트패널
Priority date: 2009-07-08
Filing date: 2010-07-02
Publication date: 2011-01-13
Also published as: WO2011004984A3; KR101056407B1; KR20110004548A

Abstract

The present invention relates to a flat illumination device which employs light-emitting elements as a light source and which is designed with an optimum configuration to enable high-performance flat illumination devices to be economically produced. The present invention provides a flat illumination device comprising: a light-emitting unit in which light-emitting elements are arranged; a light guide plate, on the side surface of which the light-emitting unit is disposed; a main body frame which is fixed onto a ceiling or a wall, and in which the light-emitting unit and the light guide plate are installed; and a cover unit which covers the main body frame.

Description

Flat lighting devices

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device, and more particularly, to a flat lighting device having a flat plate type employing a light emitting element such as an LED.

Conventional lighting devices use incandescent or fluorescent lamps as a light source, so the luminous intensity is low and the uniformity of the light transmission is reduced, resulting in relatively poor illumination quality.

On the other hand, light emitting devices such as light emitting diodes (LEDs) and organic light emitting diodes (OLEDs) are smaller than conventional light sources, and can be manufactured to be very thin, and, as such, are consumed because their lifespan is extended and electrical energy is directly converted into light energy. Low power and very high efficiency.

For example, LEDs that generate light by recombining electrons injected from n-type semiconductors with a large number of holes in P-type semiconductors consume only 1/3 to 1/10 the power of ordinary fluorescent lamps and have a lifetime of 50,000. More than six times longer than ordinary lamps.

Therefore, there is a need for widespread use of flat panel lighting apparatuses using light emitting elements as light sources in general homes that require interior decoration or industrial sites requiring low power consumption and high brightness.

An object of the present invention is to reflect the latest trends in the field of the lighting device as described above to design a flat-panel lighting device employing a light emitting element as a light source in an optimal structure to economically produce a high-performance flat lighting device .

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

The object of the present invention described above is a light emitting unit in which light emitting elements are arranged; A light guide plate on which the light emitting unit is disposed; A main frame fixed to a ceiling or a wall, on which the light emitting unit and the light guide plate are installed; And a cover unit covering the main body frame.

According to the present invention, the main body frame is formed by joining four main body beams cut at the inclination angle of 45 ° of the both ends of the body frame, the cover frame is four covers cut at the inclination angle of 45 ° both ends of the joint frame Characterized in that the beam is formed by butt coupling to each other.

According to the present invention, the reinforcing beam is connected to at least one of the main body beams forming the main body frame to reinforce the strength of the main body frame; And a reinforcing beam link screw hole for screwing is formed and inserted into a reinforcing beam link groove of the reinforcing beam, wherein the power supply or external attachment for supplying power or driving signal to the light emitting unit is And is fixed by screwing into the reinforcing beam link screw hole.

According to the present invention, the main body beam link further includes a main body beam link inserted into a main body beam link groove provided in two main body beams adjacent to each other to form the main body frame, thereby providing a coupling force between the main body beams. When the screw is fastened to the main body beam link screw hole provided in, the main body beam link is pressed into the main beam link groove, characterized in that the coupling force is provided between the main beams.

According to the present invention, the cover beam link further includes a cover beam link inserted into cover beam link grooves provided in two cover beams adjacent to each other to form the cover frame, thereby providing a coupling force between the cover beams. When a screw is fastened to the cover beam link screw hole provided in the cover beam link, the cover beam link is pressed into the cover beam link groove, thereby providing a coupling force between the cover beams.

According to the present invention, the reinforcing beam is connected to at least one of the main body beams forming the main body frame to reinforce the strength of the main body frame; And a reinforcing beam link clasp provided in the main body beam and a reinforcing beam link having one end and the other end inserted into the reinforcing beam link groove provided in the reinforcing beam, the screw being provided in the reinforcing beam link screw hole provided in the reinforcing beam link. Is coupled, the reinforcing beam link is pressed into the reinforcing beam link clasp and the reinforcing beam link groove to provide a coupling force between the main body beam and the reinforcing beam.

In addition, according to the present invention, by fastening to the main body beam forming the main body frame, characterized in that it further comprises a fixing clip for tightly fixing the light guide plate to the main body beam.

In addition, according to the present invention, the fixing clip is a hook that extends over the hook fixing groove formed in the main body beam, a fixing clip screw through hole through which the fixing clip screw passes, and a fixing clip screw opening extending from the fixing clip screw through hole. And the fixing clip screw penetrates the fixing clip screw through hole and is fastened to the fixing clip screw hole of the body beam, and the fixing clip presses the light guide plate to closely fix the light guide plate to the body beam. It is done.

Further, according to the present invention, even when the fixing clip screw is at least partially fastened to the fixing clip screw hole of the main body beam, the side portion of the fixing clip screw passes through the fixing clip screw opening so that the fixing clip passes through the main body beam. Characterized in that configured to be separated from.

In addition, according to the present invention, the body frame and the cover frame are coupled by fastening a frame coupling screw to a frame coupling screw hole respectively formed on the side of the body frame and the cover frame.

In addition, according to the present invention, a wall fixing screw hole is formed in the main body frame so as to fix the main body frame to the ceiling or wall.

According to the present invention, the light emitting unit includes a PCB to which a light emitting element is soldered, a heat dissipation frame attached to a rear surface of the PCB, and a leaf spring fitted into a spring groove on a rear surface of the heat dissipation frame, wherein the body frame And the leaf spring pressurizes the rear surface of the light emitting unit so that the light emitting unit is elastically supported in the light emitting unit groove of the main body beam.

The above object of the present invention also includes a light emitting unit in which light emitting elements are arranged; A light guide plate on which the light emitting unit is disposed; A main frame fixed to a ceiling or a wall and to which a plurality of main beams to which the light emitting unit is fitted are connected; A cover unit covering the body frame and having a plurality of cover beams screwed to the body beam; And it is also achieved by a flat lighting device comprising a fixing clip for tightly fixing the light guide plate to the body frame.

In addition, according to the present invention, by inserting the bent in the flat plate shape or 'L' shape in the groove formed in the main body beam or the cover beam, fastening the screw in the screw hole formed in the link, the screw is generated The main body beams or the cover beams are connected to each other by a pressing force between the link and the groove.

According to the flat lighting device of the present invention, since a plurality of beams can be cut to a suitable length to correspond to various dimensions of the main frame and the cover frame, it is necessary to manufacture a separate mold to cope with the change in the dimensions of the main frame and the cover frame. There is no advantage.

In addition, according to the flat lighting device of the present invention, the main frame of the flat lighting device is exposed when the cover frame is separated by screwing, there is an advantage that the entire flat lighting device does not need to be lifted from the wall during maintenance of the device.

In addition, according to the flat lighting device of the present invention, such convenience is ensured even when the light emitting unit is replaced, the appearance of the frame is beautiful and effective in the interior interior, there is an advantage that the ease of mass production and maintenance is significantly improved. .

1 is an external perspective view of a flat lighting apparatus according to an embodiment of the present invention.

2 is a rear view of the flat lighting apparatus according to the embodiment of the present invention.

3 is a side cross-sectional view of an essential part of a flat lighting device according to an embodiment of the present invention.

4 is an exploded perspective view of a main part of a flat lighting device according to an embodiment of the present invention.

5 is a plan view and a front view showing a main body beam constituting the main body frame according to an embodiment of the present invention.

6 is a plan view and a front view showing a cover beam constituting the cover frame according to an embodiment of the present invention.

7 is a plan view of a fixing clip according to an embodiment of the present invention.

8 is a plan view illustrating a light emitting unit according to an exemplary embodiment of the present invention.

10: wall 102: support plate

104: reflective sheet 106: light guide plate

108: diffuser plate 110: body frame

112: main body beam 120: cover frame

122: cover beam 130: reinforcement beam

140: joint 190: power supply

210: main body beam link 221: first cover beam link

222: second cover beam link 230: reinforcing beam link

250: fixing clip 251: hook

300: light emitting unit 310: light emitting element

320: PCB 330: heat dissipation frame

334: spring groove 340: leaf spring

410: wall fixing screw 420: frame coupling screw

430: fixing clip screw 500: screw

A: Link depression B: Screw depression

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, there is shown an appearance in which a flat lighting device is attached to a ceiling or a wall. A cover frame 120 formed of a plurality of cover beams 122 forms an appearance of a flat lighting device, and a cover frame 120. ) Is fastened by the frame coupling screw 420. A diffuser plate 108 is positioned inside the cover frame 120, and the diffuser plate 108 diffuses light emitted from the light guide plate 106 in a random direction.

2 is a rear view of the flat lighting apparatus according to the embodiment of the present invention. 3 is a side cross-sectional view of an essential part of a flat lighting device according to an embodiment of the present invention. 4 is an exploded perspective view of a main part of a flat lighting device according to an embodiment of the present invention. 5 is a plan view and a front view showing a main body beam constituting the main body frame according to an embodiment of the present invention. 6 is a plan view and a front view showing a cover beam constituting the cover frame according to an embodiment of the present invention. 7 is a plan view of a fixing clip according to an embodiment of the present invention. 8 is a plan view illustrating a light emitting unit according to an exemplary embodiment of the present invention. Hereinafter, the configuration and operation of the flat lighting device of the present invention will be described in detail with reference to FIGS. 1 to 8.

The flat lighting device of the present invention is basically a light emitting unit 300, a support plate 102, a reflective sheet 104, a light guide plate 106, a body frame 110, a cover frame 120, a reinforcement beam 130 and And a fixing clip 250.

The main frame 110 is covered with the cover frame 120 to complete the basic skeleton of the flat lighting device. The body frame 110 is fixed by a wall fixing screw 410 fastened to the ceiling or the wall 10 through the wall fixing screw hole 419. The frame coupling screw 420 is fastened to the frame coupling screw holes 429 respectively formed at the sides of the main frame 110 and the cover frame 120 to attach or detach the main frame 110 and the cover frame 120.

Body frame 110 is a combination of a plurality of body beams 112, the cover frame 120 is a plurality of cover beams 122 are connected. Four main body beams 112 are usually provided, and the joints 140 at each end are cut at an inclination angle of 45 °, and the joints 140 adjacent to each other of the four main body beams 112 are coupled to each other. The body frame 110 is completed.

An embodiment of a connection structure between the main body beams 112 will be described. The main body beam link 210 is inserted into the main body beam link groove 2100 provided in the two main body beams 112 adjacent to each other. The body beam link 210 provides a coupling force between neighboring body beams 112. When the screw 500 is fastened to the main beam link screw hole 219 provided in the main beam link 210, the main beam link 210 is squeezed into the main beam link groove 2100 so that the main beam 112 between the main beams 112 can be compressed. Cohesion is provided.

Four cover beams 122 are also generally provided, and the joints 140 at each end are cut at an inclination angle of 45 °, and when the joints 140 adjacent to each other of the four cover beams 122 are mutually coupled to each other, The cover frame 120 is completed.

An embodiment of a connection structure between the cover beams 122 will be described. Cover beam links 221 and 222 are inserted into cover

beam link grooves

2210 and 2220 respectively provided in two cover beams 122 adjacent to each other to provide a coupling force between the cover beams 122. When the screw 500 is fastened to the cover beam

link screw holes

2219 and 2229 provided in the

cover beam links

221 and 222, the

cover beam links

221 and 222 are compressed to the cover

beam link grooves

2210 and 2220, thereby covering the cover beam 122. The coupling force between the two is provided.

In an exemplary embodiment in which a plurality of

cover beam links

221 and 222 are provided, a first cover beam link 221 and a second cover beam link 222 may be provided. The first cover beam link 221 is bent in an 'L' shape, and the second cover beam link 222 is in a flat plate shape.

The first shroud beam link 221 fits into the first shroud beam link groove 2210 and engages the first shroud beam link screw hole 2219 to the first shroud beam link groove 2210. The pressing force of the cover beam link 221 is generated.

The second cover beam link 222 is fitted into the second cover beam link groove 2220, and is fastened to the second cover beam link groove 2220 by fastening the screw 500 to the second cover beam link screw hole 2229. A pressing force of the second cover beam link 222 occurs.

The reinforcement beam 130 is connected to at least one of the body beams 112 to reinforce the strength of the body frame 110. The reinforcement beam link 230 is provided to connect the reinforcement beams 130 to each other or to connect the reinforcement beam 130 and the main body beam 112.

The reinforcement beam link 230 is inserted into the reinforcement beam link groove 2300b when the reinforcement beams 130 are connected to each other. On the other hand, when the reinforcing beam 130 and the main body beam 112 is connected, one end of the reinforcing beam link 230 spans the reinforcing beam link clasp 2300a, and the other end of the reinforcing beam link 230 is a reinforcing beam link groove. It is inserted at 2300b. At this time, a reinforcing beam link screw hole 239 for screwing is formed in the reinforcing beam link 230. When the screw 500 is fastened to the reinforcing beam link screw hole 239 provided in the reinforcing beam link 230, the reinforcing beam link 230 is compressed to the reinforcing beam link clasp 2300a or the reinforcing beam link groove 2300b. Coupling force of the reinforcement beam 130 is generated.

Here, the power supply 190 or other various kinds of external attachments for supplying power or driving signals to the light emitting unit 300 may be screwed into the reinforcing beam link screw hole 239. The power supply 190 is a device for rectifying several hundred volts of AC power supplied to a home into a 12V DC power supply for driving the light emitting device 310.

As described above, the present invention utilizes the pressing force of the main beam link 210 when the main beams 112 are connected to each other, and uses the pressing force of the

cover beam links

221 and 222 when the cover beams 122 are connected to each other. The pressing force of the reinforcing beam link 230 is used when the beam 112 and the reinforcing beam 130 are connected, and the pressing force of the reinforcing beam link 230 is also used when the reinforcing beams 130 are connected to each other.

Referring to Fig. 3, the link pressing portion is denoted by reference numeral A and the screw pressing portion is denoted by reference numeral B. A link bent into a flat plate or 'L' shape is inserted into a groove formed in the main beam 112, the cover beam 122, and the reinforcement beam 130, and the screw is screwed into the screw hole formed in the link. The structure in which the clamping force is generated by the pressing force between the link and the groove generated by tightening is one of the great features of the present invention.

The light guide plate 106 is installed on the main frame 110 and covered with a cover frame 120. The light guide plate 106 has a thickness of 3 to 8 mm, for example, may be made of glass or acrylic, has a light transmittance of about 98%, a tensile strength of 760 kgf, and a deformation temperature of 90 ° C. or more. The pattern formed in the light guide plate 106 is uniformly radiated over the entire area of the light guide plate 106. The pattern may be formed by printing dots or forming grooves having a 'V' shape. In the present invention, the light guide plate 106 is a pattern designed to have a uniform brightness of more than 85% over the entire area in a distribution function control method by computer simulation, and a two-dimensional pattern design for non-uniform light amount correction.

In an exemplary embodiment, the support plate 102, the reflective sheet 104, the light guide plate 106, and the diffusion plate 108 are stacked on the main body frame 110 to form a light generating area.

The light emitting unit 300 includes a PCB 320 to which the light emitting element 310 is soldered, a heat dissipation frame 330 attached to the rear surface of the PCB 320, and a spring groove 334 on the back side of the heat dissipation frame 330. The leaf spring 340 is fitted to the. The PCB 320 or the heat dissipation frame 330 reflects the light of the light emitting device 310 in the direction of the light guide plate 106 so that the light is not disturbed backward. Various embodiments are possible, such as when the light emitting unit 300 is installed on one side surface of the light guide plate 106 having a rectangular flat plate shape, when it is installed on two side surfaces, or when it is installed on all four side surfaces. Do.

The light emitting unit 300 is disposed in the side surface of the light guide plate 106 by being fitted into the light emitting unit groove 3000 formed in the main body beam 112. At the entrance of the light emitting unit groove 3000, a light emitting unit inlet 3000r having a round shape is formed to prevent the light emitting unit 300 from being separated. The leaf spring 340 presses the rear surface of the light emitting unit 300 so as to elastically support the light emitting unit groove 3000 in the light emitting unit groove 3000 to closely contact the side surface of the light guide plate 106.

The light guide plate 106 is tightly fixed to the main body beam 112 by the fixing clip 250. As an example, the fixing clip 250 may include a hook 251 spanning the hook fixing groove 1125 formed in the body beam 112, and a fixing clip screw through hole 438 through which the fixing clip screw 430 passes. And a fixing clip screw opening 436 extending from the fixing clip screw through hole 438.

When the fixing clip screw 430 penetrates the fixing clip screw through hole 438 to the fixing clip screw hole 439 of the main body beam 112, the fixing clip 250 presses the light guide plate 106 to guide the light guide plate 106. To the main body beam 112 in close contact. Here, even if the fixing clip screw 430 is at least partially fastened to the fixing clip screw hole 439 of the body beam 112, the side of the fixing clip screw 430 may pass through the fixing clip screw opening 436. Accordingly, even if the fixing clip screw 430 is not completely loosened, the fixing clip 250 may be separated from the main body beam 112, or the light guide plate 106 may be detached from the main body beam 112.

On the other hand, when the life of the light emitting device 310 is completed or a failure occurs, it is necessary to replace with a new one. At this time, it is necessary to simply replace the light emitting unit 300 structure, in the embodiment of the present invention is to maintain the light emitting unit 300 even if the flat lighting device is not completely separated from the wall (10). That is, the main body frame 110 is fixed to the wall 10, and the cover frame 120 and the fixing clip 250 are separated from the main body beam 112. In this case, since the light emitting unit 300 is only in the state in which the light emitting unit 300 is in close contact with the light emitting unit groove 3000 by the leaf spring 340, the light emitting unit 300 may be easily separated.

As the light emitting device 310, a light emitting diode (LED), an organic light emitting diode (OLED), or the like may be employed. The light emitting device 310 consumes only about 1/3 to 1/10 the power of a general fluorescent lamp, Long life of over 50,000 hours is guaranteed. The light emitting device 310 is an environment-friendly light source because it does not contain a heavy metal such as mercury, unlike ordinary fluorescent light.

In order to increase the lifespan of the light emitting device 310, the heat dissipation unit provided in the light emitting unit 300 primarily dissipates heat of the light emitting device 310, and the heat transferred to the heat dissipation unit is transferred to the body beam 112 or the cover beam. Since it diffuses to 122, the light emitting device 310 is not damaged by heat.

The flat lighting device of the present invention can be manufactured in a very slim, ultra-light weight of about 15 ~ 30mm, and the main frame 110 and the cover frame 120 is provided with a high gloss aluminum material or stainless steel, so the finishing treatment is neat It is also effective for interior.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the claims described below.

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Claims

A light emitting unit in which light emitting elements are arranged;

A light guide plate on which the light emitting unit is disposed;

A main frame fixed to a ceiling or a wall, on which the light emitting unit and the light guide plate are installed; And

And a cover unit covering the main body frame.
The method of claim 1,

The main body frame is formed by abutting the four main body beams cut at the inclination angle of 45 ° joints of both ends,

The cover frame is a flat lighting device, characterized in that the four cover beams cut at the inclination angle of 45 ° joints of both ends are formed by abutting each other.
The method of claim 1,

A reinforcing beam connected to at least one of the main beams forming the main frame to reinforce the strength of the main frame; And

A reinforcing beam link threaded hole for screwing is formed and is inserted into a reinforcing beam link groove of the reinforcing beam, further comprising:

And a power supply or external attachment for supplying power or drive signal to said light emitting unit is fixed by screwing into said reinforcing beam link screw hole.
The method of claim 1,

A main body beam link inserted into a main body beam link groove provided in two main body beams adjacent to each other to form the main body frame, and providing a coupling force between the main body beams,

And when the screw is fastened to the main beam link screw hole provided in the main beam link, the main beam link is compressed to the main beam link groove to provide a coupling force between the main beams.
The method of claim 1,

And a cover beam link inserted into cover beam link grooves provided in two cover beams adjacent to each other to form the cover frame, thereby providing a coupling force between the cover beams.

And when the screw is fastened to the cover beam link screw hole provided in the cover beam link, the cover beam link is pressed into the cover beam link groove to provide a coupling force between the cover beams.
The method of claim 1,

A reinforcing beam connected to at least one of the main beams forming the main frame to reinforce the strength of the main frame; And

Further comprising a reinforcing beam link clasp provided in the main body beam and a reinforcing beam link having one end and the other end inserted into the reinforcing beam link groove provided in the reinforcing beam,

When a screw is fastened to a reinforcing beam link screw hole provided in the reinforcing beam link, the reinforcing beam link is compressed to the reinforcing beam link clasp and the reinforcing beam link groove to provide a coupling force between the main body beam and the reinforcing beam. Flat lighting device.
The method of claim 1,

And a fixing clip which is fastened to the main body beam forming the main body frame, thereby closely fixing the light guide plate to the main body beam.
The method of claim 7, wherein

The fixing clip has a hook that spans the hook fixing groove formed in the main beam, a fixing clip screw through hole through which the fixing clip screw passes, and a fixing clip screw opening extending from the fixing clip screw through hole,

And when the fixing clip screw penetrates the fixing clip screw through hole and is fastened to the fixing clip screw hole of the main body beam, the fixing clip presses the light guide plate to closely fix the light guide plate to the main body beam. Device.
The method of claim 8,

Even when the fixing clip screw is at least partially fastened to the fixing clip screw hole of the body beam, the side of the fixing clip screw is passed through the fixing clip screw opening so that the fixing clip can be separated from the body beam. Flat lighting device, characterized in that.
The method of claim 1,

And a frame coupling screw is fastened to a frame coupling screw hole respectively formed at the side of the main frame and the cover frame to engage the main frame and the cover frame.
The method of claim 1,

And a wall fixing screw hole is formed in the main body frame to fix the main body frame to the ceiling or wall.
The method of claim 1,

The light emitting unit includes a PCB on which a light emitting element is soldered, a heat dissipation frame attached to a rear surface of the PCB, and a leaf spring fitted into a spring groove on a rear surface of the heat dissipation frame,

And the leaf spring pressurizes the rear surface of the light emitting unit so that the light emitting unit is elastically supported in the light emitting unit groove of the main body beam constituting the main body frame.
A light emitting unit in which light emitting elements are arranged;

A light guide plate on which the light emitting unit is disposed;

A main frame fixed to a ceiling or a wall and to which a plurality of main beams to which the light emitting unit is fitted are connected;

A cover unit covering the body frame and having a plurality of cover beams screwed to the body beam; And

And a fixing clip for tightly fixing the light guide plate to the main body frame.
The method of claim 13,

The link and the groove formed by inserting a link bent in a flat plate shape or an 'L' shape into a groove formed in the main beam or the cover beam, fastening a screw in a screw hole formed in the link, and tightening the screw. The flat lighting device, characterized in that configured to be connected to the main body beams or the cover beams by the pressing force between.