KR101160816B1 - Edge type led lighting apparatus - Google Patents

Abstract

The present invention relates to an edge type light emitting diode lighting apparatus, the edge type light emitting diode lighting apparatus according to the present invention comprises a frame which is installed on the ceiling to form an illumination space between the frames through a combination of at least two frames; LEDs disposed on the substrate and disposed on the inner surface of the frame, respectively; and a light guide plate having an outer periphery supported by the frame and disposed in an illumination space of the frame, for inducing and diffusing light of the light emitting means; And a cover plate disposed on a rear side of the light guide plate to fix the light guide plate to the frame, wherein the cover plate is fixed to the frame body, wherein each of the two or more frames is fixed by friction stir welding (FSW). It is characterized by being configured integrally.

Description

Edge-type LED Lighting Apparatus {Edge Type LED Lighting Apparatus}

The present invention relates to an edge type light emitting diode illumination device, and more particularly, to an edge type light emitting diode illumination device that is provided buried in the ceiling to provide surface lighting.

In recent years, LED elements have been spotlighted as light sources of various lighting devices. The LED device has advantages of low heat generation, low power consumption, excellent durability, and long life compared to light sources of conventional lighting devices such as incandescent and fluorescent lamps. LED lamps do not use mercury or discharge gas like fluorescent lamps, so they do not cause environmental pollution.

The LED device can last about 100,000 hours if provided with proper power supply and heat dissipation means. However, all light sources gradually decrease in light output. Since up to 80% of the initial brightness is not well felt by humans, according to this criterion, the lifetime of the LED lamp is expected to be about 40,000 to 50,000 hours. Therefore, the relative lifetime of an LED lamp is estimated to be very long compared with 1500 hours of an incandescent lamp and 10,000 hours of a fluorescent lamp.

1 is a partially exploded perspective view schematically showing the configuration of the LED lighting apparatus according to the prior art, Figure 2 is a front view schematically showing a part of the front surface of FIG.

1 to 2, in the LED lighting apparatus according to the related art, four linear side frames 10 having a predetermined length are connected by a 'b' shaped corner bracket, a diffusion plate 20, and a light guide plate 30. ), The reflecting plate 40 is sequentially stacked, and the LED lighting means 50 is disposed on the inner surface of the frame 10, and the cover plate 60 disposed on the rear surface of the reflecting plate 40 is fixed to the frame 10. do.

In the LED lighting apparatus according to the related art, in the combination of the frames 10, the end of the straight row frame is cut at an angle of 45 degrees, and the four frames 10 are combined to form a rectangular frame, each of these frames 10 Both ends of the '-' shaped corner bracket 70 are fastened to each frame 10 adjacent to each other, thereby fixing the frames 10.

By the way, when the frame 10 is fixed by the 'b' shaped corner bracket 70, as shown in Figure 2, a gap (G) is likely to occur in the assembly portion of the frame 10, such a gap (G) There is a problem that the quality of the product is degraded because the light leaks through).

In addition, the conventional lighting device as described above is different in the fixing method according to the construction state of the ceiling in the process of installing the lighting device on the ceiling.

In other words, the lightweight steel structure constituting the ceiling structure is mainly used to fix the ceiling finishing member using the M-shaped bar or T-shaped bar. There is a problem that must be manufactured and sold, respectively.

Accordingly, an object of the present invention is to solve such a conventional problem, to provide an edge type LED lighting device that can prevent light leakage through the assembly portion of the frame.

In addition, since the frame formed by the combination of the frame is made integral, to provide an edge-type LED lighting apparatus that can prevent the shape of the frame to be arbitrarily deformed.

In addition, the present invention provides an edge type LED lighting apparatus capable of preventing some members from being randomly moved at an assembly position by keeping a plurality of members stacked in the frame in close contact with each other.

In addition, an edge type light emitting diode lighting apparatus capable of improving heat dissipation performance by allowing the fixing part and the heat dissipating part to be spaced apart from each other and arranged side by side on the outer surface of the frame.

In addition, the frame is to provide an edge-type LED lighting device that can be fixed fixed regardless of the type of M-type and T-type bar.

According to the present invention, the frame body is installed on the ceiling by forming a lighting space between the frame through the combination of at least two frames; And, the LED is continuously arranged on the circuit board, respectively on the inner surface of the frame A light guide plate disposed at an illumination space of the frame supported by the frame, and having an outer circumferential part provided therein; And a cover plate disposed on a rear side of the light guide plate to fix the light guide plate to the frame, wherein the cover plate is fixed to the frame body, wherein each of the two or more frames is fixed by friction stir welding (FSW). It is achieved by an edge type light emitting diode illumination device, characterized in that it is configured integrally.

Here, the frame has a side wall portion disposed in a vertical direction, a support portion formed in a horizontal direction inside the lower end portion of the side wall portion to seat the edge of the light guide plate, and formed in a horizontal direction outside the upper end portion of the side wall portion so that the edge of the cover plate is formed. It is preferable that a fixing part to be fixed is formed.

In addition, the frame is preferably a welded portion formed by friction stir welding on the inner surface of the support portion of the connecting portion between the two frames.

In addition, the frame preferably forms at least one heat dissipation part formed in a horizontal direction so as to be disposed side by side with the fixing part on the outer side of the side wall portion.

In addition, a reflective plate disposed on the rear side of the light guide plate to reflect light, an elastic cushion plate interposed between the reflective plate and the cover plate, and a light diffuser plate disposed on the front side of the light guide plate to diffuse the light; It is preferable to further include.

In addition, the frame body preferably forms a guide block formed with a guide groove for guiding the position of the light guide plate at each corner of the illumination space.

According to the present invention, there is provided an edge type LED lighting device that can prevent light leakage through the assembly portion of the frame.

In addition, since the frame body constituted by the combination of the frames is integrally provided, an edge type LED lighting apparatus capable of preventing the shape of the frame body from being arbitrarily deformed is provided.

In addition, an edge type LED lighting apparatus capable of preventing some members from being randomly moved at an assembly position by maintaining a plurality of members stacked in the frame in close contact with each other is provided.

In addition, an edge type light emitting diode lighting apparatus capable of improving heat dissipation performance is provided by allowing the fixing part and the heat dissipating part to be spaced apart from each other in parallel to the outer surface of the frame.

In addition, there is provided an edge type light emitting diode illuminating device in which the frame can be fixedly installed regardless of the type of the M-type bar and the T-type bar.

1 is a partially exploded perspective view schematically showing the configuration of the LED lighting apparatus according to the prior art,
FIG. 2 is a front view schematically showing a part of the front surface of FIG. 1;
3 is a perspective view of an edge type LED lighting apparatus of the present invention;
4 is an exploded perspective view of the edge type LED lighting apparatus of the present invention;
5 is a side cross-sectional view of the edge type LED lighting apparatus of the present invention;
6 is a plan sectional view of an edge type LED lighting apparatus of the present invention;
7 is a plan view showing the assembled state of the corner portion of the frame of the edge type LED lighting device of the present invention;
8 is a cross-sectional view showing a state in which the edge-type LED lighting apparatus of the present invention is installed on the M-shaped bar that is the ceiling structure,
9 is a cross-sectional view showing a state in which the edge-type LED lighting apparatus of the present invention is installed on a T-shaped bar that is a ceiling structure.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, an edge type LED lighting apparatus according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of the edge type LED lighting apparatus of the present invention, and FIG. 4 is an exploded perspective view of the edge type LED lighting apparatus of the present invention.

Edge type LED lighting apparatus of the present invention as shown in the drawing is installed on the ceiling, the frame 110, the guide block 120, the light emitting means 130, the light diffusion plate 140, the light guide plate 150 , And a reflecting plate 160, a cushion plate 170, and a cover plate 180.

The frame 110 constitutes an illumination space between the frames 111 through a combination of at least two frames 111. In this embodiment, four linear frames 111 are assembled to form a rectangular frame. It demonstrates as an example.

Here, the frame 111 is made of a metal material, the side wall portion 112 is disposed in the vertical direction, and formed in the horizontal direction inside the lower end of the side wall portion 112 is the edge of the light guide plate 150 is seated The support part 113, the fixing part 114 is formed in the horizontal direction outside the upper end of the side wall portion 112, the edge of the cover plate 180 is fixed, and the high side from the outer side of the side wall portion 112 At least one heat dissipation part 115 is formed to be horizontally spaced apart from the government part 114.

Particularly, the frames 111 are integrally formed with each end fixed by friction stir welding (FSW), by friction stir welding on the inner surface of the support 113 of the connection portion between the two frames 111. While the weld portion W is formed, light leakage is prevented from occurring through the assembly surface between the support portions 113.

Such friction stir welding is a joining method whose basic principle was developed in 1991 by TWI (British Welding Institute). FSW is a solid-state joint that is joined by reverse flow in the material by using frictional heat, so there is no blowhole or solidification cracking and less deformation due to joining compared to melt welding such as arc welding, laser welding, and electron beam welding. Have As a result, it is widely used in the railroad, vehicle, ship, aircraft, aerospace and automotive industries.

In addition, the frame 111 is formed on the upper side of the support portion 113, the first engaging jaw portion 116 for guiding the mounting position of the light diffusion plate 140 is formed, the cover on the upper side of the fixing portion 114 A second locking jaw portion 117 is formed to guide the assembly position of the plate 180.

The guide block 120 is formed on the inner surface of the guide groove for guiding the insertion position of the light guide plate 150 is disposed at each corner of the illumination space of the frame 110.

The light emitting means 130 is spaced apart from the circuit board 131 disposed inside the side wall portion 112 of the frame 111 in the longitudinal direction on the circuit board 131 toward the side portion of the light guide plate 150. It consists of a plurality of LEDs 132 to emit light.

The light diffusion plate 140 induces and diffuses the light provided from the LED 132 to provide a uniform illumination as a whole, and is disposed in the illumination space of the frame 110, the edge portion of the image of the support portion 113 Seated on the side, the outer end is prevented from being moved arbitrarily while interfering with the first locking jaw portion 116 formed on the upper side of the support portion 113.

The light guide plate 150 guides and diffuses the light of the light emitting means 130 provided from the side toward the front part, and is disposed on the rear surface of the light diffusion plate 140 in the illumination space of the frame 110. Each corner portion is inserted into and supported in the guide groove of the guide block 120 disposed at each corner of the illumination space of the frame 110 to prevent the insertion position from being moved at the same time.

The reflective plate 160 reflects light toward the rear surface of the light guide plate 150 toward the front portion of the light guide plate 150, and is disposed on the rear surface of the light guide plate 150 in the illumination space of the frame 110.

The cushion plate 170 is made of an elastic material and is disposed on the rear surface of the reflecting plate 160, and is compressed between the support part 113 of the frame 111 and the cover plate 180 while being pressed during assembly of the cover plate 180. Allow the inserted multiple members to be in close contact.

The cover plate 180 is disposed on the rear side of the cushion plate 170 to fix the light diffusing plate 140, the light guide plate 150, and the reflecting plate 160 to the frame 110, and an outer end thereof is disposed at the high end. The assembly position is guided while interfering with the second locking jaw portion 117 formed on the upper side of the government 114, and the edge portion is fastened to the fixing portion 114 of the frame 111 by a fastening member S such as a screw. It is fixed.

The operation of the first embodiment of the above-described edge type LED lighting apparatus will now be described.

5 is a side cross-sectional view of the edge-type LED lighting apparatus of the present invention, and FIG. 6 is a cross-sectional view of the edge-type LED lighting apparatus of the present invention.

5 and 6, each end of the four frames 111 is cut at 45 degrees, and the cut ends are assembled to abut each other to form a rectangular frame 110 having an illumination space in the center. Fixing method for the connection between the frame 111 will be described later.

The frame 111 constituting the frame 110 is a support portion 113 is formed inside the lower end of the side wall portion 112, the illumination space is formed between the support portion 113 of each frame 111, An edge portion of the diffusion plate 140 inserted into the illumination space of the frame 110 is seated on the support 113 and supported by the frame 110.

At this time, the outer end portion of the diffusion plate 140 is assembled so as to be located in the inner portion of the first catching jaw portion 116 formed on the upper end of the support portion 113, the insertion position of the diffusion plate 140 is guided, The position of 140 is arbitrarily changed.

The light guide plate 150, the reflecting plate 160, and the cushioning plate 170 are sequentially stacked on the diffusion plate 140.

On the other hand, a circuit board 131 of the light emitting means 130 in which a plurality of LEDs 132 are continuously arranged in the longitudinal direction is disposed on the inner surface of the side wall portion 112 of the frame 111. The LED 132 of the light emitting means 130 is turned on by receiving power through a separate power supply means, the LED 132 is installed to emit light toward the side end of the light guide plate 150.

In addition, a guide block 120 is interposed between each corner of the light guide plate 150 and the side wall portion 112 of the frame 111 at a portion corresponding to each corner of the illumination space of the frame 110. Guide the insertion position. In addition, as the corners of the light guide plate 150 are respectively inserted into the insertion grooves 121 formed on the inner surface of the guide block 120, the insertion position of the light guide plate 150 may be arbitrarily changed or moved by an external force.

In addition, in a state in which the diffusion plate 140, the light guide plate 150, the reflecting plate 160, and the cushioning plate 170 are sequentially stacked in the illumination space of the frame 110, a cover plate (back plate) is formed on the rear surface of the cushioning plate 170. 180 is disposed, and each edge of the cover plate 180 is fixed between the fixing portion 114 of the frame 111, respectively, between the support portion 113 and the cover plate 180 of the frame 110 Secure the members.

The cover plate 180 is guided to the assembly position of the cover plate 180 by the second locking jaw portion 117 formed on the fixing portion 114, the fastening member such as a screw penetrating the edge portion ( The cover plate 180 is fixed to the frame 110 while S) is fastened to the fixing part 114 of the frame 111.

In the coupling process of the cover plate 180, the cushion plate 170 interposed between the cover plate 180 and the reflective plate 160 is coupled to be compressed. In the state in which the cushion plate 170 is compressed, each member disposed between the cover plate 180 and the support part 113 is elastically pressed, so that the members are in close contact with each other.

On the other hand, the frame 111 is formed in the convection by forming a heat dissipating portion 115 arranged in parallel with the fixing portion 114 at a position spaced apart from the fixing portion 114 formed on the outer surface of the side wall portion 112, Improve the cooling efficiency.

That is, a space spaced apart between the heat dissipation fin and the fixing part 114 is provided, and the heat dissipating part 115 protrudes parallel to the fixing part 114 at a position spaced apart from the fixing part 114 in a wing shape. By forming, the space between the fixing part 114 and the outer surface of the heat dissipating part 115 are subjected to heat exchange by contact with external air. As described above, by allowing external air to contact the space between the fixing part 114 and the heat dissipation part 115, the heat dissipation effect is improved.

7 is a plan view showing the assembled state of the corner portion of the frame 110 of the edge type LED lighting device of the present invention.

As shown in FIG. 7, each of the frames 111 constituting the frame 110 is cut at each end at a 45 degree angle, and is coupled in a state where each end is in contact with each other such that adjacent pairs of frames 111 are assembled in a vertical direction.

Here, since the coupling portions of the respective frames 111 are coupled by friction stir welding, they are not coupled using a separate fastening member S as in the prior art, so that the coupling between the members is solid and the frames 111 are separated. Compared with assembling using the bracket of the self stiffness is increased, it is possible to prevent the occurrence of play in the assembly portion between the frame (111).

In particular, as shown in the drawings, the welded portion (W) is formed by friction stir welding at the connection portion of the support portion 113 of the frame 111, so that both sides of the support portion 113 are integrally connected and the assembled surface therebetween is welded ( Since it is filled by W), light leakage is prevented from occurring through the assembly portion as in the prior art.

8 is a cross-sectional view showing a state in which the edge-type LED lighting apparatus of the present invention is installed on the M-shaped bar which is a ceiling structure, and FIG. 9 is a cross-sectional view showing a state in which the edge-type LED lighting apparatus of the present invention is installed in a T-shaped bar of the ceiling structure. to be.

First, when the edge type LED lighting apparatus of the present invention is installed in the M-shaped bar (M) of the ceiling structure, as shown in Figure 8, the end of the ceiling finishing material is fixed to the lower side of the M-shaped bar (M), the illumination The end of the device is fixed to the other bottom of the M-shaped bar (M).

That is, the upper side of the fixing portion 114 formed in the horizontal direction on the outer upper end portion of the side wall portion 112 of the frame 111 is in close contact with the other side of the lower side of the M-shaped bar (M), As the fastening member S penetrating the heat generating part and the fixing part 114 is fastened to the M-shaped bar M, the frame 111 is fixed to the M-shaped bar M.

Similarly, the ceiling finishing member B fixed to one lower side of the M-shaped bar M is also fastened to the lower one side of the M-shaped bar M by fastening the member S penetrating the end of the finishing member B. (114) The material is fixed to the M-shaped bar (M).

At this time, the frame 111 is made of a metal material, the heat generated from the light emitting means 130 in close contact with the M-shaped bar (M) M-shaped bar (M) of the light steel structure through the frame 111 Because it is transmitted to, heat generated from the light emitting means 130 is easily cooled.

When the edge type LED lighting apparatus of the present invention is installed in the T-shaped bar (T) of the ceiling structure, as shown in Figure 9, the end of the ceiling finishing material is mounted on the lower side of the T-shaped bar (T) and mounted, The end of the device is mounted on the other side of the lower portion of the T-shaped bar (T).

That is, the lower side surface of the heat dissipation unit 115 formed in the horizontal direction at the outer center portion of the side wall portion 112 of the frame 111 is seated on the other lower side of the T-shaped bar (T).

Here, since the frame 111 made of the metal material is kept in contact with the T-shaped bar T, heat generated from the light emitting unit 130 is transmitted through the frame 111 to form the T-shaped bar of the lightweight steel structure ( Since it is transmitted to T), heat generated from the light emitting means 130 is easily cooled.

As described above, in the edge type LED lighting apparatus according to the present invention, the frame 111 may be assembled to the M-shaped bar M and the T-shaped bar T, respectively. There is an advantage that the cross-sectional structure of 111 does not have to be provided respectively.

In addition, since the frame 111 made of a metal material is in close contact with the M-shaped bar M and the T-shaped bar T, heat generated from the light emitting device is transferred to the lightweight steel structure and is easily cooled, so that the LED 132 is heated by heat. The life can be prevented from being shortened.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described in the present invention to various extents which can be modified.

110: frame, 111: frame, 112: side wall portion, 113: support portion, 114: fixed part,
115: heat dissipation unit, 116: first locking jaw portion, 117: second locking jaw portion, 120: guide block,
121: insertion groove, 130: light emitting means, 131: circuit board, 132: LED, 140: diffusion plate,
150: light guide plate, 160: reflection plate, 170: cushion plate, 180: cover plate, W: welding part,
S: Fastening member, M: M bar, T: T bar, B: Finish member

Claims (6)

delete delete A frame installed on the ceiling by configuring an illumination space between the frames through a combination of at least two frames;
LEDs are continuously arranged on the circuit board, the light emitting means is installed on the inner surface of the frame;
A light guide plate having an outer periphery supported by the frame and disposed in an illumination space of the frame, for inducing and diffusing light of the light emitting means; And,
And a cover plate disposed at a rear side of the light guide plate to fix the light guide plate to the frame and fixed to the frame body.
The frame has a side wall portion arranged in a vertical direction, a support portion formed in a horizontal direction inside the lower end portion of the side wall portion to seat the edge of the light guide plate, and formed in a horizontal direction outside the upper end portion of the side wall portion to fix the edge of the cover plate. The fixing part is formed,
The frame is an edge type light emitting diode illumination device, characterized in that the welding portion is formed by friction stir welding on the inner surface of the support portion of the connection between the two frames. The method of claim 3, wherein
The frame is an edge type light emitting diode illumination device, characterized in that for forming at least one heat dissipation portion formed in a horizontal direction so as to be arranged side by side spaced apart from the fixing portion on the outer side of the side wall portion. The method of claim 4, wherein
A reflection plate disposed on a rear side of the light guide plate to reflect light, an elastic cushion plate interposed between the reflection plate and a cover plate, and a light diffusion plate disposed on a front side of the light guide plate to diffuse light; Edge type LED lighting apparatus, characterized in that. 6. The method of claim 5,
The frame is an edge type light emitting diode illumination device, characterized in that for forming a guide block formed with a guide groove for guiding the position of the light guide plate at each corner of the illumination space.

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