WO2009157686A2

WO2009157686A2 - A frame for a light guide plate type led lighting device

Info

Publication number: WO2009157686A2
Application number: PCT/KR2009/003358
Authority: WO
Inventors: 오정환; 김대현; 김용범; 김지형; 양순모
Original assignee: 주식회사 자화라이텍
Priority date: 2008-06-26
Filing date: 2009-06-23
Publication date: 2009-12-30
Also published as: KR20100001021A; WO2009157686A3

Abstract

The present invention relates to a frame for a light guide plate type LED lighting device, more particularly to a frame for a light guide plate type LED lighting device, having a modified profile structure to be able to improve the bond strength of the frame and to facilitate LED heat dissipation. The frame for a light guide plate type LED lighting device according to the present invention is a frame having a multiplicity of profiles bonded together, wherein each of the profiles has a hole formed inside and fixing clip means including at least two overlaid fixing clips so that the fixing clip means is inserted into the hole to interconnect adjacent profiles and that the fixing clip means and the profiles are secured by clamping means. Therefore, by having the improved profile structure, the present invention can substantially increase the bond strength of the frame, facilitate LED adhesion and carry out LED heat dissipation more effectively.

Description

Frame of LED lighting device of LGP

The present invention relates to a frame of a light guide plate type LED lighting device, and more particularly, to change the structure of the profile constituting the frame of the light guide plate type LED lighting device to improve the bonding strength of the frame and smooth the heat dissipation of the LED. It relates to a frame of a light guide plate type LED lighting device.

1 is a perspective view of a typical light guide plate type LED lighting device.

A light guide plate type LED lighting device is a lighting device that emits light to the outside while the LED element is used as a light source and light emitted from the LED element is spread through the light guide plate. In FIG. 1, only the frame 100 for maintaining the appearance of a light guide plate type LED lighting device and a diffuser plate 101 for diffusing light of an LED element are shown, but below the diffuser plate 101 is illustrated in FIG. 2. The light guide plate 102, the reflective sheet 103, and the back plate 104 are provided in this order.

2 is an exploded perspective view of a conventional LED lighting apparatus of the light guide plate type.

FIG. 2 is a view illustrating a light guide plate type LED lighting device shown in FIG. 1 separated from below, and a light guide plate type LED lighting device maintains an appearance and an LED installed inside the frame 100. A strip 120, a diffuser plate 101 that diffuses light emitted from the light guide plate 102 to the outside, and a light guide plate 102 that guides the light emitted from the LED strip 120 to the entire surface. ), A reflecting sheet 103 reflecting light emitted downward to the lower part of the light guide plate 102, and a diffuser plate 101, a light guide plate 102, and a reflecting sheet 103 in close contact with the reflecting sheet 103. It is composed of a back plate 104 for fixing the frame 100.

3 shows a perspective view of the profile constituting the frame.

One profile 108 is shown in FIG. 3, wherein the same four profiles combine to form a frame 100. As shown in FIG. 3, inside the profile 108, a supporting plate 111 is provided to hold the diffusion plate 101, the light guide plate 102, and the reflective sheet 103 in order to be stacked, and the inner wall ( A first guide 109 is formed on the inner wall 112 and a second guide 110 is formed on the support plate 111 to guide the sliding of the LED strip 120 along the 112.

Looking at the manufacturing process of the LED lighting apparatus of the conventional light guide plate structure configured as described above, first, by inserting the LED strip 120 to the inside of the profile 108 to prepare the four profiles in which the LED strip 120 is installed. Subsequently, after arranging the profiles to form the shape of the frame 100, the fixing clips 106 are placed on the four corners of the frame 100, and the adjacent profiles are fixedly coupled using the fixing screws 107. Next, after the diffusion plate 101, the light guide plate 102, and the reflective sheet 103 are stacked in this order, the back plate 104 is placed on the reflective sheet 103, and the back plate 104 and the frame 100 are fixed with screws. Combined to 105 to complete the manufacture of a light guide plate type LED lighting device.

However, when a frame of a conventional light guide plate-type LED lighting device is made, the adjacent profile is fixedly coupled by a fixing clip attached to the outside, so that the coupling strength is weak and there is a problem in that the twist of the frame occurs even when a slight impact is applied.

In addition, the conventional profile has a structure in which the LED strip is slidingly inserted into the inside of the profile, so that the inner space needs to be somewhat larger than the thickness of the LED strip so that the LED strip can be smoothly inserted. This results in a slight gap between the LED strip and the frame. Because of this gap, heat transfer to the frame is not complete and heat generated from the LED strip is transferred to the inside rather than to the outside through the frame, resulting in greater torsion of the frame due to temperature differences between the frame and the center. There was a problem.

The present invention has been made to solve the above problems, the light guide plate type of LED lighting device that can prevent the twist of the frame by changing the structure of the profile to improve the bonding strength of the frame and at the same time smooth the heat dissipation of the LED The purpose is to provide a frame.

To this end, in the frame of the light guide plate type LED lighting apparatus according to the present invention, in a frame formed by combining a plurality of profiles, a fixing clip means in which a hole is formed inside the profile, and at least two fixing clips are overlapped. The fixing clip means is inserted into the hole so that adjacent profiles are mutually coupled, and the fixing clip means and the profile are fixed by the fastening means.

In addition, the method of manufacturing a light guide plate-type LED lighting apparatus according to the present invention, the first step of forming a frame by combining a plurality of profiles, and the first step of attaching the LED strip to the inside of the profile in the frame formed state A second step of sequentially stacking a diffuser plate, a light guide plate, a reflective sheet, and a back plate inside the frame; and a second profile coupling a back profile to the profile such that the back plate is fixed to the frame. It is characterized by including four steps.

As described above, the present invention has an effect that the bonding strength of the frame can be very increased by inserting the fixing clip means into the holes formed inside the profile to couple the adjacent profiles to each other.

In addition, by providing a back profile separately from the profile constituting the frame, it is possible to provide a more robust lighting device by final fixing using the back profile instead of fixing internal components only with the back plate.

In addition, the present invention can be easily attached to the LED strip without the process of sliding inserting the LED strip by improving the inner structure of the profile, LED heat radiation can be carried out more effectively because the LED strip is in close contact with the inside of the profile. .

Figure 2 is an exploded perspective view of a conventional light guide plate type LED lighting device.

Figure 3 is a view showing the frame structure of a conventional light guide plate type LED lighting device.

4 is a perspective view of the frame according to an embodiment of the present invention.

5 is an exploded perspective view showing the coupling of the frame according to an embodiment of the present invention.

6 is a cross-sectional view of the frame according to the embodiment of the present invention.

7 is a perspective view of a frame coupled to the back profile according to an embodiment of the present invention.

8 is a cross-sectional view of a light guide plate type LED lighting apparatus according to an embodiment of the present invention.

4 is a perspective view of a frame of a light guide plate type LED lighting apparatus according to an embodiment of the present invention. The frame 50 illustrated in FIG. 4 is configured by combining four

profiles

10, 20, 30, and 40, and shows the bottom of the frame 50.

One end of the first profile 10 is connected to the second profile 20 and the other end of the first profile 10 is connected to the third profile 30, while one end of the fourth profile 40 is connected. It is connected to the second profile 20 and the other end of the fourth profile 40 is connected to the third profile 30 to form one frame 50.

5 is an exploded perspective view showing the connection structure of the frame. The connection structure between the first profile 10 and the second profile 20 shown in FIG. 5 applies equally to other profiles. In addition, the structure of the profile will be described based on the first profile 10, but the same applies to other profiles.

The first profile 10 has a groove 14 into which one end of the fixing clip means 60 is inserted, and a flat inner wall 11 to which the LED strip 70 is attached, a diffusion plate, etc. are formed inside the first profile 10. A boundary jaw 12 protruding from the support plate 13 is provided to separate the support plate 13, the LED strip 70, the diffusion plate, etc., which extend along the inner wall 11 so as to be maintained. The planar inner wall 11 provided inside the first profile 10 allows the LED strip 70 to be directly attached from the upper side without the sliding insertion, thereby providing convenience of manufacturing a light guide plate type LED lighting device.

The fixing clip means 60 for connecting the first profile 10 and the second profile 20 consists of a first fixing clip 61, a second fixing clip 62 and a third fixing clip 63. have. The first fixing clip 61 is provided with a fastening hole 64 for fixing the first profile 10 and the second profile 20, while the second fixing clip 62 and the third fixing clip 63 are provided. ) Does not have a fastening hole.

In the exemplary embodiment of the present invention, the fixing clip means 60 in which the first fixing clip 61, the second fixing clip 62, and the third fixing clip 63 are overlapped is described. The number of fastening clips constituting may be two or four or more. Of course, the fixing clip means 60 may be composed of only one fixing clip, but two or more fixing so that the coupling force by the fixing screw 65 in the inner lower side of the profile (10, 20, 30, 40) can be dispersed It is preferable to use a clip. At least one of the plurality of securing clips should have a fastening hole for securing the profile.

The

fixing clips

61, 62, 63 constituting the fixing clip means 60 are preferably made of a material of a material higher than the strength of the profile. That is, the profile can be made of aluminum and the

securing clips

61, 62, 63 can be made of steel. By doing so, the bonding strength of the frame can be increased by the increased strength. Moreover, it is preferable that the 1st fixing clip 61 provided with the fastening hole is larger in thickness than the

other fixing clips

62 and 63. FIG. This is because the thickness must be secured so that a screw line can be formed on the inner wall of the fastening hole.

After inserting one end of the fixing clip means 60 into the groove 14 of the first profile 10, the other end of the fixing clip means 60 is inserted into the groove (not shown) of the second profile 20. Thus, the first profile 10 and the second profile 20 are combined. Subsequently, when the fixing screw 65 is inserted and tightened through the fastening hole 15 provided in the first profile 10, the fixing screw 65 is fastened to the fastening hole 15 of the first profile 10 as shown in FIG. 6. ) And the fastening holes 64 of the first fastening clip 61, the first fastening clip 61 is brought into close contact with the inner upper side of the first profile 10, and the second fastening clip 62 and the third are fastened to each other. The fixing clip 63 is pushed by the fixing screw 65 to be in close contact with the inner lower side of the first profile 10.

6 shows a combined cross sectional view of the frame. When the fixing screw 65 is tightened, the first fixing clip 61 is in close contact with the inner upper side of the first profile 10, and the second fixing clip 62 and the third fixing clip 63 are fixed with the fixing screw 65. It is pushed by) and is in close contact with the inner lower side of the first profile 10. The same coupling scheme is applied to the second profile 20 as a result of which the first profile 10 and the second profile 20 can be very strongly coupled by the fixing clip means 60.

7 is a perspective view showing a structure in which a back profile is coupled to a frame. When the adjacent profiles are combined with each other in the same manner as in FIG. 5, a frame 50 as in FIG. 4 is formed. After attaching the LED strip 70 to the inside of the frame 50 formed as shown in FIG. 4 (that is, after attaching the LED strip 70 to the inside of each

profile

10, 20, 30, 40), In turn, the diffusion plate 90, the light guide plate 91, and the reflection sheet 92 are stacked, and the back plate 93 is attached to fix the diffusion plate 90. Subsequently, the back profile 80 is fixedly coupled to the frame 60 so that the back plate 93 can be further fixed.

8 is a sectional view of a light guide plate type LED lighting apparatus according to an embodiment of the present invention. As shown in FIG. 8, the LED strip 70 is installed inside the frame 50 formed by the mutual coupling of the

profiles

10, 20, 30, and 40, and the diffusion plate from the front of the frame 50. 90, the light guide plate 91, the reflective sheet 91, and the back plate 93 are positioned in this order. Finally, the back profile 80 is coupled to each profile by the fixing screw 81 to firmly fix the back plate 93.

Frame of the light guide plate type LED lighting apparatus according to an embodiment of the present invention has been described taking an example of a rectangular shape, but may be equally applied to various types of frames such as a circle or a triangle. That is, the shape of the profile can be changed according to the shape of the frame while maintaining the basic structure and coupling manner of the profile, and thus the shape of the fixing clip means and the back profile can be changed. Therefore, the embodiments described with reference to the drawings should not be construed as limiting the technical idea of the present invention, and the protection scope of the present invention is limited only by the matters described in the claims.

Claims

In a frame formed by combining multiple profiles,

A hole is formed inside the profile,

A fixing clip means is provided in which at least two fixing clips are superimposed,

The fixing clip means is inserted into the hole so that adjacent profiles are mutually coupled;

And the fixing clip means and the profile are fixed by the fastening means.
The method of claim 1,

The fixing clip means is composed of a first fixing clip and a second fixing clip,

The first securing clip includes a fastening hole,

As the fastening means is inserted through the fastening hole, the first fastening clip is in close contact with the upper side of the profile and the second fastening clip is in close contact with the lower side of the profile, so that the fastening clip means and the profile are fixed. Frame.
The method of claim 1,

And said securing clip means is a material of a material of higher strength than said profile.
The method of claim 1,

Insert the insert inside the frame

And a back profile coupled to the profile to secure the insert.
The method of claim 1,

And the thickness of the first fixing clip is greater than the thickness of the second fixing clip.
A frame formed by combining a plurality of profiles, an LED strip installed inside the frame, a light guide plate for guiding the light emitted from the LED strip to the front, and the light emitted to the bottom of the light guide plate is reflected upwards In the light guide plate type LED lighting apparatus comprising a reflective sheet, a diffuser plate for diffusing light irradiated onto the light guide plate, and a back plate for fixing the light guide plate, the reflective sheet and the diffuser plate to the frame,

A hole is formed inside the profile,

A fixing clip means is provided in which at least two fixing clips are superimposed,

The fixing clip means is inserted into the hole so that adjacent profiles are mutually coupled;

Frame of the light guide plate type LED lighting apparatus, characterized in that the fixing clip means and the profile is fixed by the fastening means.
The method of claim 6,

A support plate holding the diffusion plate inside the profile;

It is provided with a planar inner wall to which the LED strip is directly attached from above,

Frame of the light guide plate type LED lighting device, characterized in that the support plate is formed with a boundary jaw separating the LED strip and the diffusion plate.
The method of claim 6,

The fixing clip means is composed of a first fixing clip and a second fixing clip,

The first securing clip includes a fastening hole,

As the fastening means is inserted through the fastening hole, the first fastening clip is in close contact with the upper side of the profile and the second fastening clip is in close contact with the lower side of the profile, so that the fastening clip means and the profile are fixed. Frame of LED lighting apparatus of the light guide plate.
The method of claim 6,

The fixing clip means is a frame of the light guide plate type LED lighting apparatus, characterized in that the material of a higher strength than the profile.
The method of claim 6,

And a back profile coupled to the profile to fix the back plate.
The method of claim 6,

The thickness of the first fixing clip is a frame of the light guide plate type LED lighting apparatus, characterized in that greater than the thickness of the second fixing clip.
A frame formed by combining a plurality of profiles, an LED strip installed inside the frame, a light guide plate for guiding the light emitted from the LED strip to the front, and the light emitted to the bottom of the light guide plate is reflected upwards In the light guide plate type LED lighting apparatus comprising a reflective sheet, a diffuser plate for diffusing light irradiated onto the light guide plate, and a back plate for fixing the light guide plate, the reflective sheet and the diffuser plate to the frame,

A hole is formed inside the profile,

Fixed clip means is inserted into the hole so that adjacent profiles are mutually coupled,

The fixing clip means and the profile are fixed by fastening means,

Frame of a light guide plate type LED lighting device, characterized in that the back profile for fixing the back plate is coupled to the profile.
The method of claim 12,

A support plate holding the diffusion plate inside the profile;

It is provided with a planar inner wall to which the LED strip is directly attached from above,

Frame of the light guide plate type LED lighting device, characterized in that the support plate is formed with a boundary jaw separating the LED strip and the diffusion plate.
The method of claim 12,

The fixing clip means is a frame of the light guide plate type LED lighting apparatus, characterized in that the material of a higher strength than the profile.
A first step of combining a plurality of profiles to form a frame,

A second step of attaching the LED strip to the inside of the profile with the frame formed;

A third step of sequentially laminating a diffusion plate, a light guide plate, a reflection sheet, and a back plate in the frame;

And a fourth step of coupling the back profile to the profile such that the back plate is fixed to the frame.
The method of claim 15,

The first step may include providing a plurality of profiles having holes formed therein;

Interlocking adjacent profiles by inserting a securing clip means in each hole of the adjacent profiles,

Method of manufacturing a light guide plate type LED lighting apparatus comprising the step of fixing the fixing clip means and the profile by a fastening means.
The method of claim 16,

The fixing clip means is a method of manufacturing a light guide plate type LED lighting apparatus characterized in that at least two or more fixing clips are configured to overlap.