KR100937773B1 - Light guide plate lighting apparatus - Google Patents

Abstract

The present invention relates to a light guide plate illuminating device that emits light emitted from a light source through a light guide plate to enable lighting and advertisement functions. Particularly, the light guide plate is partitioned into a plurality of light emitting blocks, so that each block is separately illuminated. The present invention relates to a light guide plate lighting apparatus which can adjust brightness, express various shapes and colors, have brighter illumination than a conventional light guide plate, and is easy to install on a wall or a ceiling without damaging its appearance.

The light guide plate lighting apparatus according to the present invention is directed to a light guide plate having a light transmission preventing groove for partitioning one front surface from which light is emitted into a plurality of blocks by blocking light transmission, and toward a light reflection part of the light guide plate or a side part of the light guide plate. It includes a light source for generating light, the light guide plate partitioned into a plurality of blocks by the light transmission prevention groove is formed with a light reflecting portion that reflects the light generated from the light source portion, or any of color sheets, paper or fabric It is characterized by one attached.

Light guide plate, lighting device, light transmission prevention groove, LED, CCFL

Description

Light guide plate lighting apparatus}

The present invention relates to a light guide plate illumination device for emitting light emitted from a light source through a light guide plate to enable lighting and advertising functions. Particularly, the light guide plate is divided into a plurality of light emission blocks to shine each light separately. Lighting device can be configured with different brightness, and various shapes and colors can be expressed. will be.

In general, a lighting apparatus using a light guide plate is a light source such as a cold cathode lamp (CCFL), a light emitting diode (LED), etc. to project the light to the light guide plate made of a plate-shaped transparent plastic or acrylic resin, such as indoor lighting, interior, And as advertising panels.

For example, as shown in FIG. 1, in the light guide plate illumination device 100, a light source 131, such as a CCFL or LED, fixed on the substrate 132 is provided on the side surface of the light guide plate 110 by a protective cover 133. A plurality of light reflecting grooves 111 are formed on a rear surface of the light guide plate 110 along a predetermined shape, and at the same time, a reflector plate is formed on a rear side of the light guide plate 110 on which the light reflecting grooves 111 are formed. It consists of a structure that 120 is installed.

Therefore, when the light source 131 starts to emit light by the power supplied from the outside, the light emitted into the light guide plate 110 is reflected by the light reflecting groove 111 and is projected to the front surface of the light guide plate 110. Various patterns, characters, and shapes can be expressed, and the projected light can be used to function as indoor lighting, interiors, and advertising panels.

However, the light guide plate illuminating device 100 as described above is configured to be used as one light projection unit as a whole light guide plate only, it is impossible to adjust the brightness for each part using one light guide plate 110, There was a problem in that it is not possible to properly represent various plants, animals, and objects having various shapes and colors for each part.

Since the light source 131 is mounted only at the edge of the light guide plate 110, the light source 131 does not have sufficient illuminance as a lighting device. For this reason, there is a problem in that the light guide plate lighting device 100 having a large size and a thin thickness cannot be manufactured.

In addition, when the light guide plate 110 is fixed to the wall or ceiling, the installation of the light guide plate 110 as described above does not provide a separate fixing means that can be stably fixed without harming the appearance of the light guide plate 110. there was.

Thus, in the present invention to solve the problems as described above, the light emitted from the light source through the light guide plate to enable the illumination and advertising functions, the light guide plate is divided into a plurality of light emitting blocks, respectively, to light separately. According to the present invention, a light guide plate lighting apparatus capable of configuring different brightness for each block and expressing various shapes or colors is provided.

In addition, the light guide plate lighting apparatus is configured to have a bright illuminance to provide a light guide plate lighting apparatus that can manufacture a light guide plate lighting apparatus having a large size and a thin thickness.

In addition, it is to provide a light guide plate lighting device that is easy to install on the wall or ceiling without harming its appearance.

In order to achieve the above object, the light guide plate lighting apparatus of the present invention includes: a light guide plate having a light transmission prevention groove for partitioning one front surface into which a light is emitted into a plurality of blocks by blocking light transmission; and light reflection of the light guide plate The light guide plate is configured to include a light source for generating light toward the side or the side of the light guide plate, the light guide plate partitioned into a plurality of blocks by the light transmission preventing groove is a block formed with a light reflecting portion for reflecting the light generated from the light source portion in the rear portion, It is composed of a block attached to any one of the color sheet, paper, cloth or printed layer on the rear portion, and the reflection plate for reflecting the light emitted from the light source to the front side is coupled to the rear portion of the block formed with the light reflection portion .

In this case, the light reflector is characterized in that any one of the light reflecting groove or the printed layer.

The light source unit may be inserted into the light transmission preventing groove.

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At this time, the rear side of the light source unit is characterized in that the protective cover for protecting the light source unit from the external environment, the heat dissipation heat generated from the light source unit is inserted into the light transmission preventing groove.

In addition, the light transmission prevention groove is characterized in that the perforated portion perforated the light guide plate.

According to the light guide plate lighting apparatus of the present invention as described above, the light emitted from the light source can be projected through the light guide plate to enable illumination and advertising functions, and the light guide plate is divided into a plurality of light emitting blocks to separately light each other. Each block can be configured with different brightness, and various shapes and colors can be expressed.

In addition, the light guide plate illuminating device is configured to have bright illuminance, so that the light guide plate illuminating device having a large size and a thin thickness can be manufactured, and it is very easy to install on a wall or a ceiling without damaging the appearance.

Hereinafter, a light guide plate lighting apparatus according to a preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

Figure 2 is an exploded perspective view of the light guide plate lighting apparatus according to the present invention, Figure 3 is a cross-sectional view of the light guide plate lighting apparatus according to the present invention, Figure 4 (a) to (c) is a plurality of light transmission preventing grooves of the light guide plate lighting apparatus. 5 is a view showing a light source unit embedded in an edge portion of the light guide plate, FIG. 6 is a view showing an embodiment of a light guide plate lighting apparatus according to the present invention, and FIGS. d) is a view showing various embodiments in which the light source unit is installed in the light transmission preventing groove of the light guide plate illuminating device, Figure 8 is a view showing a state in which the cover member is attached to the light transmission preventing groove, Figure 9 is a sheet member in the light guide plate Is a view showing a state in which is attached, Figure 10 is a view showing a perforation portion for installing the light source portion of the light guide plate.

First, as shown in FIG. 2, the light guide plate lighting apparatus 200 according to the present invention is a light guide plate 210 made of a light-transmitting plastic or an acrylic resin having a high light transmittance while being easily processed to form grooves on a surface thereof, and A light source unit 233 formed with a light source 232 such as a cold cathode ray lamp (CCFL) or a light emitting diode (LED) is provided on a substrate 231 on which an electric circuit of a pattern is formed and for protecting the light source unit 233. The light source portion formed of the protective cover 234 has a main configuration.

In addition, the reflector 220 is coupled to the light guide plate 210 in parallel to the rear side of the light guide plate 210, if necessary, is configured to increase the light reflection efficiency.

In this case, as shown in FIG. 3, a light transmission preventing groove 211 is formed on the rear surface of the light guide plate 210 so that the light guide plate 210 may be partitioned into a plurality of blocks having a boundary surface having a predetermined shape. The light guide plate 210 may be used to express various shapes, and light sources having different characteristics may be installed in the partitioned portions to represent different colors, brightness, illuminance, and saturation.

In addition, as described above, the light guide plate 210 is partitioned into a plurality of blocks, and light reflecting grooves 212 are formed in each of the partitioned portions along a predetermined shape of the light source unit 233 as in the prior art. The light emitted from the light reflecting groove 212 is configured to be projected through the front surface of the light guide plate 210.

In addition, one or both sides of the substrate 231 on which the light source 232 is installed are provided with reflectors 235 to increase light reflectance by attaching or applying a mirror or silver paste. It is preferable.

Therefore, when the light emitted from the light source 232 installed on one side is reflected by the light transmission preventing groove 211 and is returned, the light is provided to be reflected back by the reflector 235 provided on the substrate 231 or the light source installed on one side. When the light emitted from 232 reaches the substrate 231 installed on the other side, the reflected light may be reflected by the reflecting unit 235, so that the light projection efficiency of the light guide plate 210 may be increased. do.

By forming the light transmission prevention groove 211 at a predetermined width and a predetermined depth in the middle of the light guide plate 210 as described above, the light emitted from the light source unit 233 on both sides of the light guide plate 210 is transferred to the light transmission prevention groove ( 211 is not transmitted, and some light of the light source unit 233 passes between the light transmission preventing groove 211 and the front surface of the light guide plate 210, thereby forming a light control panel illumination device 200 having different illuminance for each block. .

That is, as shown in FIG. 3, the light guide plate 210 is formed in the light guide plate 210 so that the light guide plate 210 is divided into three blocks. The light source unit is provided at both edges of the light guide plate 210. Due to the light emitted from 233, the two outer blocks of the light guide plate 210 have bright illuminance, while the center block of the light guide plate 210 prevents light emitted from the light source unit 233 from transmitting light. Light is blocked by the grooves 211 to have a lower illuminance than the two outer blocks.

In this case, as shown in FIG. 3, the roughness of the center block of the light guide plate 210 is determined by the depth of the light transmission preventing groove 211 formed in the light guide plate 210. If the depth is deep, most of the light emitted from the light source unit 233 is blocked by the light transmission preventing groove 211, the illuminance of the center block of the light guide plate 210 is low, the depth of the light transmission preventing groove 211 When is low, the light emitted from the light source unit 233 is less the amount of light blocked by the light transmission preventing groove 211, the brightness of the center block is brighter.

Meanwhile, as illustrated in FIG. 4A, the light transmission preventing groove 211 has a thickness direction of the light guide plate 210 according to a predetermined light transmittance such that the light guide plate 210 is not cut. Since the depth of the groove is controlled and the surface of the processed light transmission preventing groove 211 is rough, the light emitted from the light source unit 233 hardly passes through the light transmission preventing groove 211 alone.

However, as shown in FIG. 4B, a light-transmitting material or a light reflecting material 211 ′ is coated on the surface of the light-transmitting groove 211, or shown in FIG. 4C. As it may be, it is desirable to fill the light transmission preventing groove 211 with the light transmission preventing material or the light reflecting material 211 'to further improve the light blocking property between each partitioned block.

In addition, the light transmission preventing groove 211 may be formed in a cross section as shown in (a) of FIG. 4, but may be made of an oval or as shown in (b) of FIG. As shown in (c) of FIG. 7, it is preferable that the light source 233 be easily inserted into and fixed to the light transmission preventing groove 211 as shown in FIGS. 7A to 7D. will be.

Inserting the light source unit 233 into the light transmission preventing groove 211 to configure the light guide plate illumination device 200 will be described in detail later.

As shown in FIG. 7D, light transmission preventing grooves 211 are processed in front and rear surfaces of the light guide plate 210, respectively, and light transmission prevention grooves 211 in front and rear surfaces of the light guide plate 210 are aligned. It is also possible to block the light of the light source 232 from leaking to the next block by processing it so as to overlap with each other in a predetermined portion without being located on the top.

As illustrated in FIG. 2, the light source unit 233 including the substrate 231 and the light source 232 is supported by both end portions of the light guide plate 210 by a protective cover 234 made of plastic or metal. And although it may be fixed, as shown in Figure 5 to form an insertion groove 213 in the end of the light guide plate 210 and insert the light source unit 233 to emit light toward the inside of the light guide plate 210 Instead of the protective cover 234 of the frame type shown in FIG. 2, it may be possible to finish using a protective cover 234a such as an insulating tape.

By dividing the light guide plate 210 into a plurality of blocks by the light transmission preventing groove 211 as described above, the light guide plate lighting apparatus 200 can express various patterns and colors, as shown in FIG. 6 as an example. A circular light transmission prevention groove 211a is formed in the center of the seed so that the sunflower seed portion can be expressed, and a petal light transmission prevention groove 211b is formed outside the circular light transmission prevention groove 211a. As a whole, the first block to the third block (BL1 '~ BL3') to form a sunflower shape as a whole, and the first block (BL1 ') in the orthogonal shape light to express the sunflower seed shape in more detail A light source having a light brown color that forms a reflection groove 212a 'and forms a light reflection groove 212b' in the entire block in the second block, and emits toward the inner side of the circular light transmission preventing groove 211a. Insert (232a ') The yellow light source 232b 'is inserted into the petal-shaped light transmission preventing groove 211b to emit light toward the inside thereof.

Therefore, as the brown light emitted toward the first block BL1 'is reflected by the orthogonal light reflecting groove 212a', the brown light having the orthogonal shape is projected through the front surface of the light guide plate 210, As the yellow light emitted toward the second block BL2 'is reflected by the light reflection grooves 212b' forming the petal shape, the yellow light of the petal shape is projected through the front surface of the light guide plate 210, and as a whole, Sunflower flower shape can be a function of lighting, interior and advertising.

However, in the above, the circular light transmission preventing groove 211a partitioning the first block BL1 'and the second block BL2' and partitioning the second block BL2 'and the third block BL3' are divided. The light source 232a 'and the yellow light source 232b' are installed in the light transmission prevention grooves 211b, respectively, but instead of installing the light source 232 in the light transmission prevention grooves 211a and 211b, respectively. It may also be possible to install a light source (232a ', 232b') to the light transmission prevention groove (211a) of the light emitting light in both directions around the boundary.

That is, the light source unit 233 is installed in the circular light transmission preventing groove 211a, but the light source unit 233 is provided with a light source of light brown 232a 'on one side of the substrate 231, and yellow on the other side. The light source 232b 'is configured to be installed, wherein the light source 232a' of the brown color emits light toward the inside and the yellow light source 232b 'emits light toward the outside. It will be possible.

And, as shown in (a) to (d) of Figure 7 by inserting the light source unit 233 into the light transmission prevention groove of the light guide plate 210, the size is larger and brighter than the conventional light guide plate illumination device 100 The light guide plate lighting apparatus 200 may be configured.

Since the light guide plate lighting apparatus 100 of FIG. 1 has a light source 131 installed only at the edge of the light guide plate 100 as shown in FIG. 1, there is a limit in increasing the illuminance of the light guide plate lighting apparatus 100, and the size thereof is large. Although it was not possible to manufacture a large light guide plate illumination device 100, the light guide plate illumination device 200 of the present invention is conventionally provided by inserting the light source unit 233 into the light transmission preventing groove 211 of the light guide plate illumination device 200, It is possible to manufacture the light guide plate lighting device 200 larger and brighter than the light guide plate lighting device 100 of the.

As described above, when the light source unit 233 is inserted into the light transmission preventing groove 211 of the light guide plate 210, the metal protective cover 234a having a “┏” or “┓” shape is fastened to the rear surface of the light source unit 233. By inserting and installing in the light transmission preventing groove 211 of the light guide plate 210, maintenance and repair of the light source unit 233 is easy, and heat generated when light is emitted from the light source unit 233 is applied to the protective cover 234a. By radiating heat to the outside, the life of the light source unit 233 can be extended.

In addition, the light source unit 233 is installed at both sides of the “┳” shaped metal protective cover 234a and inserted into the light transmission preventing groove 211, so that light may be emitted to both blocks of the light transmission preventing groove 211. The illuminance of the lighting device 200 may be increased.

As illustrated in FIG. 7A to 7C, the light source unit 233 is fastened to the metal protective cover 234a to be mounted in the light transmission preventing groove 211 of the light guide plate 210.

As described above, three light blocking plate grooves 211 are formed in the light guide plate 210, and three blocks are formed. In FIG. 7A, the light source of the light source unit 233 is moved to the outer block of the light guide plate 210. By radiating, the outer two blocks are brighter than the center block of the light guide plate 210. In addition, in FIG. 7B, light is emitted from the light source unit 233 to the center block of the light guide plate 210 so that the center block is brighter than the outer block of the light guide plate 210. FIG. 7C shows a light guide plate illuminator that is brighter than the light guide plate 210 of FIGS. 7A and 7B by inserting the light source unit 233 having light sources on both sides into the light transmission preventing groove 211. 210 is configured.

In addition, the fixing plate 236 couples the reflecting plate 220 to the light guide plate 210 by coupling the fixing plate 236 to the rear surface of the reflecting plate 220 to emit light emitted from the light source unit 233 only to the front portion of the light guide plate 210. ) So that it can reflect light better. More preferably, the fixing plate 236 is formed of a metal material to be in close contact with the protective cover 234a of the light source unit 233 inserted into the light transmission preventing groove 211 of the light guide plate 210 so as to be in close contact with the light source unit 233. Since heat generated from the heat dissipation through the protective cover 234a is transferred to the fixing plate 236, the heat dissipation area is increased to increase the cooling efficiency.

Furthermore, as illustrated in FIGS. 7A to 7C, a strip-shaped cover sheet 237 is attached to the front side of the light guide plate 210 of the light transmission preventing groove 211 into which the light source unit 233 is inserted. Alternatively, the light transmission prevention groove 211 into which the light source unit 233 is inserted at the front surface of the light guide plate 210 by printing in a band shape on the front side of the light guide plate 210 of the light transmission prevention groove 211 into which the light source unit 233 is inserted. It is preferable to make it not visible.

In addition, the light transmission prevention groove 211 is processed in the front surface of the light guide plate 210 instead of the rear surface of the light guide plate 210, and the protective cover 234 is formed in the light transmission prevention groove 211 formed in the front surface of the light guide plate 210. The light guide plate lighting apparatus 200 may be configured by inserting the fastened light source unit 233 and finishing the entrance of the light transmission preventing groove 211 into which the light source unit 233 is inserted with a tape.

As described above, the light guide plate illumination device 200 having the light source unit 233 inserted into the front surface of the light guide plate 210 removes the tape without removing the light guide plate 210 from the wall when the light source unit 233 is broken or maintained. Maintenance may be very easy because the light source unit 233 inserted into the light transmission preventing groove 211 on the front surface may be replaced or repaired.

When the light source unit 233 is inserted into the light transmission preventing groove 211 formed on the rear surface of the light guide plate 210, the light source unit 233 is not visible as shown in FIGS. 7A to 7C. Although the cover sheet 237 is attached to the front surface of the light guide plate 210, as shown in FIG. 8, the cover member 241 is formed at the bottom of the light transmission preventing groove 211 into which the light source unit 233 is inserted. The light source 233 is not visible from the front of the 210 so that the appearance is beautiful.

In this case, when the reflecting plate 220 having the same material as the reflecting plate 220 attached to the rear surface of the light guide plate 210 is used as the cover member 241, the light transmission preventing groove 211 when viewed from the front surface of the light guide plate 210. The reflecting plate 220 attached to the bottom of the) and the reflecting plate 220 attached to the back of the light guide plate 210 may feel a sense of unity due to the same material and color.

As shown in FIG. 9, the light guide plate is attached by attaching a sheet member 242 such as a color sheet, paper, or cloth to the rear of a specific block of the light guide plate 210 divided into several blocks by the light transmission preventing groove 211. By configuring the device 200, different colors and different textures may be expressed for each block of the LGP lighting device 200.

In addition, as shown in FIG. 10, the light guide plate 210 is drilled to form a punching unit 243 for installing the light source unit 233 of a predetermined width and a predetermined length, and a light source such as an LED or a DDFL is formed on the punching unit 243. 232 may be inserted and installed, and a light source 232 such as a large LED or a CCFL may be easily inserted into the perforation portion 243 through which the light guide plate 210 is drilled.

In addition, the light guide plate 210 that can be used as lighting, interior and advertisement means as described above, the lighting device 200 can be installed on the wall or ceiling without harming the appearance of the light guide plate 210, the lighting device 200, As shown in FIG. 9, as the through-hole 214 having a predetermined shape is formed in the light guide plate 210, and a fixing frame (not shown) is installed to contact one or both surfaces of the through-hole 214. It is preferable that the fixing frame is configured to be coupled to a supporting rod installed on a wall or a ceiling.

In addition, the light reflection groove 212 is formed on the rear surface of the light guide plate 210 so that the light reflected by the light reflection groove 212 is projected through the front surface of the light guide plate 210 to represent a predetermined shape. Although already described, the print layer (not shown) is attached to the front surface of the light guide plate 210 corresponding to the portion where the light reflecting grooves 212 are not formed by attaching a film on which various shapes are printed or drawing a picture of a predetermined shape. It is preferable to form various shapes, or to engrav, to express various shapes by simultaneously using the light projected by the printed layer, the engraved portion, and the light reflecting groove 212, which are included in the scope of the present invention. .

The light guide plate lighting apparatus according to the present invention has been described above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and equivalent concepts thereof should be construed as being included in the scope of the present invention.

The present invention relates to a light guide plate illumination device for emitting light emitted from a light source through a light guide plate to enable lighting and advertising functions. Particularly, the light guide plate is divided into a plurality of light emission blocks to shine each light separately. The lighting device can be configured with different brightness, and various shapes and colors can be expressed, and the light guide plate lighting device which is brighter than the conventional light guide plate and can be easily installed on the wall or ceiling without damaging the appearance will be.

1 is a cross-sectional view of a conventional light guide plate lighting device.

Figure 2 is an exploded perspective view of the light guide plate lighting apparatus according to the present invention.

3 is a cross-sectional view of a light guide plate lighting apparatus according to the present invention.

Figure 4 (a) to (c) is a view showing various embodiments of the light transmission preventing groove of the light guide plate illumination device.

5 is a view showing a light source unit embedded in an edge portion of the light guide plate;

6 is a view showing an embodiment of a light guide plate lighting apparatus according to the present invention.

7 (a) to 7 (d) illustrate various embodiments in which a light source unit is installed in a light transmission preventing groove of a light guide plate lighting apparatus.

8 is a view showing a state in which the cover member is attached to the light transmission prevention groove.

9 is a view showing a state in which a sheet member is attached to the light guide plate.

10 is a view showing a perforation part for installing a light source unit of a light guide plate;

<Explanation of symbols for the main parts of the drawings>

200: light guide plate lighting device 210: light guide plate

211: light transmission groove 212: light reflection groove

213: insertion groove 214: through hole

220: reflector 231: substrate

232: light source 233: light source

234: protective cover 235: reflector

236: fixing plate 237: cover sheet

240 tape 241 cover member

242 sheet member 243 perforation

Claims (7)

A light guide plate formed with a light transmission preventing groove for partitioning one front surface from which light is emitted by blocking light transmission into a plurality of blocks; It comprises a light source portion for generating light toward the light reflecting portion of the light guide plate or the side portion of the light guide plate, The light guide plate partitioned into a plurality of blocks by the light transmission preventing groove has a block formed with a light reflecting portion reflecting light generated from the light source portion at the rear portion, and a block having any one of a color sheet, paper, cloth or printing layer attached to the rear portion. Consisting of, The light guide plate illumination device, characterized in that coupled to the reflecting plate for reflecting the light emitted from the light source to the front side of the block formed with the light reflecting portion. The method of claim 1, The light reflecting unit is a light guide plate illumination device, characterized in that any one of the light reflecting groove or the printing layer. The method of claim 2, The light guide plate illuminating device, characterized in that the light source is inserted into the light transmission prevention groove. delete delete The method of claim 3, wherein A light guide plate lighting apparatus is fastened to a rear side of the light source unit to protect the light source unit from the external environment, and a protective cover for radiating heat generated from the light source unit is inserted into the light transmission preventing groove. The method according to any one of claims 1 to 3 and 6, The light transmission preventing groove is a light guide plate illumination device, characterized in that the perforated portion of the light guide plate.

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