KR20140078930A - Illuminating device - Google Patents

Illuminating device Download PDF

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Publication number
KR20140078930A
KR20140078930A KR1020120148240A KR20120148240A KR20140078930A KR 20140078930 A KR20140078930 A KR 20140078930A KR 1020120148240 A KR1020120148240 A KR 1020120148240A KR 20120148240 A KR20120148240 A KR 20120148240A KR 20140078930 A KR20140078930 A KR 20140078930A
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KR
South Korea
Prior art keywords
light
light emitting
emitting units
pattern
light source
Prior art date
Application number
KR1020120148240A
Other languages
Korean (ko)
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KR102028386B1 (en
Inventor
박광호
박무룡
김진희
양현덕
조민수
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020120148240A priority Critical patent/KR102028386B1/en
Publication of KR20140078930A publication Critical patent/KR20140078930A/en
Application granted granted Critical
Publication of KR102028386B1 publication Critical patent/KR102028386B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The present invention includes an optical guide layer containing a protruded optical pattern which forms an adjacent layer and a gap; a plurality of light emitting units penetrating the optical guide layer; and a resin layer formed on the optical guide layer and the light emitting units, and provides an illuminating device to which at least one of the light emitted from the light emitting units is superposed, thereby affecting the changes of a light form depending on a viewing angle to look at a light source by mounting a variety of geometric optical patterns, affecting the reduction in the entire thickness, and effecting the improvement of the degree of design freedom during the design of a product according to the flexibility.

Description

ILLUMINATING DEVICE

More particularly, the present invention relates to a light emitting device, and more particularly, to a light emitting device having a light guiding plate and a light guiding plate. The light guiding plate is thinned to secure a light efficiency, And an effect of changing the shape and the three-dimensional effect of the lighting device.

The LED (Light Emitted Diode) device is a device that converts electric signals into infrared rays or light using compound semiconductor characteristics. Unlike fluorescent light, unlike harmful substances such as mercury, it does not cause environmental pollution, It has a long lifetime advantage. In addition, it consumes low power compared to conventional light sources, has high visibility due to high color temperature, and has a small glare.

Therefore, the current illumination device has been developed to use a conventional light source such as a conventional incandescent lamp or a fluorescent lamp as a light source. In particular, as disclosed in Korean Patent Laid-Open No. 10-2012-0009209, A light emitting device that performs a surface light emitting function is provided.

1 and 2 schematically show a conventional lighting apparatus 1 which performs a surface light emitting function. 1 and 2, a conventional lighting apparatus 1 includes a substrate 20 on which a planar light guide plate 30 is disposed and a plurality of side-type LEDs 10 (only one is shown) Are arranged in an array form.

The light L incident on the light guide plate 30 from the LED 10 is reflected by the reflective sheet 40 in a fine reflection pattern provided on the bottom surface of the light guide plate 30 and is emitted from the light guide plate 30, 30 to provide light to the outside through the transparent outer housing 50 and the like. 2, a plurality of diffusion sheets 31, prism sheets 32, 33, and a protective sheet 34, etc. are provided between the light guide plate 30 and the outer housing 50, The optical sheet of the present invention may be further added.

The light guide plate 30 functions to improve the brightness of the illumination device 1 and to supply uniform light. The light guide plate 30 is provided with a light source It is one of the plastic molded lenses that uniformly transmits the diverging light. Therefore, although the light guide plate 30 is basically used as an essential part of the conventional lighting apparatus 1, the thickness of the overall product can be reduced due to the thickness of the light guide plate 30 itself, It is difficult to apply it to the outer housing 50 formed by bending due to its inability to be flexible. Therefore, it is not easy to design the product or deform the design, and it is difficult to realize a geometric three-dimensional effect.

Korean Patent Publication No. 10-2012-0009209

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-described problems of the prior art, and it is an object of the present invention to provide a lighting device structure capable of thinning the entire thickness by using a resin layer to guide light emitted from a light- The purpose is to provide.

The present invention also provides an illumination device capable of realizing a variety of condensed shapes by arranging a light guide unit in which a light guide layer having a protruding optical pattern is formed between a resin layer and a reflective member to realize a geometric dimensional sense, And the like.

According to an aspect of the present invention, there is provided an illumination device comprising: a light guide layer including a protruding optical pattern for forming an adjacent layer and a gap; A plurality of light emitting units passing through the light guide layer; And a resin layer formed on the light guide layer and the plurality of light emitting units, and at least one light emitted from the plurality of light emitting units may be superimposed.

In the illuminating device of the present invention, the plurality of light emitting units may be arrayed in a line at a predetermined interval.

In the illumination apparatus of the present invention, the plurality of light emitting units may be composed of the first light source array to the Nth light source array.

In the illumination apparatus of the present invention, the first to Nth light source arrays may be electrically insulated and driven individually.

In the illumination apparatus of the present invention, the light emitting units included in at least one of the first to Nth light source arrays may be disposed at the same interval.

In the illuminating device of the present invention, light emitting units included in at least one of the first to Nth light source arrays may have the same light emitting direction.

In the illumination apparatus of the present invention, the light emitting units included in the Mth light source array and the light emitting units included in the (M + 1) th light source array may be arranged in a zigzag manner.

In the illumination apparatus of the present invention, the light emitting units included in the Mth light source array and the light emitting units included in the (M + 1) th light source array may be arranged in a one-to-one correspondence.

In the illumination apparatus of the present invention, light emitting units included in the Mth light source array and light emitting units included in the (M + 1) th light source array may have the same light emitting direction.

In the illumination apparatus of the present invention, light emitting units included in the Mth light source array and light emitting units included in the (M + 1) th light source array may have opposite light emitting directions.

In the illuminating device of the present invention, the optical guide layer may be a prism sheet having a plurality of unit prism lens patterns, a microlens array sheet, or a lenticular lens sheet, or a combination thereof.

In the illuminating device of the present invention, the protruding optical pattern may be formed on the other surface of the light guide layer in contact with the resin layer.

The illumination device of the present invention may further include a printed circuit board formed under the light guide layer.

In the illuminating device of the present invention, the light emitting device may further include a reflecting member formed between the printed circuit board and the light guide layer.

In the illumination apparatus of the present invention, an adhesive pattern may be formed between the light guide layer and the reflective member.

In the illumination device of the present invention, a reflection pattern may be formed on the reflection member.

In the illuminating device of the present invention, the reflection pattern may be formed of a reflective ink containing any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , silicon and PS (Poly Stylen).

The illumination device of the present invention may further comprise a first optical sheet formed on the upper surface of the resin layer and dispersing light emitted therefrom.

In the illuminating device of the present invention, it may further comprise a second optical sheet formed on the first optical sheet.

In the illuminating device of the present invention, an optical pattern that shields or reflects light emitted from the upper surface of the first optical sheet or the lower surface of the second optical sheet may be formed.

In the illuminating device of the present invention, the optical pattern may be a pattern formed by using a light-shielding ink containing at least one selected from TiO 2 , CaCO 3 , BaSO 4 and Silicon, and a diffusion pattern formed of Al or Al and TiO 2 The light-shielding pattern formed using the light-shielding ink including the mixture can be made into a superimposed structure.

The illuminating device of the present invention may further include a transparent lens disposed on the second optical sheet.

In the illuminating device of the present invention, the transparent lens may be formed with a transparent pattern on one surface facing the second optical sheet.

In the illuminating device of the present invention, the cross section of the transparent pattern may be any one of a polygonal shape, a circular shape, an elliptical shape, a convex lens, and a concave lens shape, or a combination thereof.

In the illuminating device of the present invention, the spacing portion may be formed between the second optical sheet and the transparent lens.

In the illuminating device of the present invention, the resin layer may be made of an ultraviolet curable resin containing an oligomer.

In the illuminating device of the present invention, the oligomer may include any material selected from Urethane Acrylate, Epoxy Acrylate, Polyester Acrylate, and Acrylic Acrylate.

In the illumination device of the present invention, the resin layer may be formed of silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , acryl, And a bead made of any one selected from among the beads.

In the illuminating device of the present invention, the light emitting unit may be a side view type light emitting diode.

In the lighting apparatus of the present invention, the printed circuit board may be a flexible printed circuit board.

According to the present invention, the shape of the light and the three-dimensional effect are changed according to the viewing angle by arranging the light emitting units so as to overlap the outgoing light with the optical guide layer formed with the protruding optical pattern, The shape of the geometric light pattern can be deformed, the illuminating device with improved aesthetics can be provided, and the present invention can be applied to various types of lighting devices.

Further, by removing the light guide plate and guiding light by using the resin layer, it is possible to reduce the number of light-emitting units and to reduce the overall thickness of the lighting apparatus.

In addition, according to the present invention, flexibility can be ensured by forming a lighting device using a flexible printed circuit board and a resin layer, thereby improving the degree of freedom of product design.

Figures 1 and 2 schematically illustrate a conventional illumination device structure.
3 shows a main part of a lighting apparatus according to the present invention.
Fig. 5 shows a structure in which an optical sheet is added to the illuminating device of the present invention shown in Fig.
FIG. 6 shows a structure in which a transparent lens is added to the illumination apparatus of the present invention shown in FIG.
7 to 9 show a plan view and an actual operating state image of an embodiment of the structure in which the light emitting units are arranged.
10 to 12 are plan views showing various embodiments of the structure in which the light emitting units are arranged.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the embodiments described herein and the configurations shown in the drawings are only a preferred embodiment of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention. The following terms are defined in consideration of the functions of the present invention, and the meaning of each term should be interpreted based on the contents throughout this specification. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

A light guiding layer is formed between a reflective sheet and a resin layer. The light guiding layer is formed between the reflective sheet and the resin layer. The light guiding layer is formed between the reflective sheet and the resin layer. It is an object of the present invention to provide a lighting device structure capable of applying various applications by realizing a geometric shape rather than a simple surface light emission by arraying units.

In addition, the lighting device according to the present invention is applicable to various lamp devices requiring illumination, such as a vehicle lamp, a domestic lighting device, and an industrial lighting device. For example, when it is applied to a vehicle lamp, it can be applied to a headlight, a vehicle interior light, a door scarf, a rear light, and the like. In addition, the illumination device of the present invention can be applied to a backlight unit field applied to a liquid crystal display device, and can be applied to all lighting-related fields that are currently developed, commercialized, or can be implemented according to future technology development.

3 shows a main part of a lighting apparatus according to the present invention.

3, the lighting apparatus according to the present invention includes a printed circuit board 110, a plurality of light emitting units 130 formed on the printed circuit board 110, and a plurality of light emitting units 130 A reflective member 120 formed on the printed circuit board 110 and a light guiding layer 210 provided with a protruding optical pattern are sequentially formed on the printed circuit board 110. The light emitting unit 130 is embedded, And a resin layer 150 leading to the front.

The printed circuit board 110 may be a flexible printed circuit board (FPCB) to secure certain flexibility in the present invention.

The light emitting unit 130 includes a plurality of light sources arranged on the printed circuit board 110 to emit light. The light emitting unit 130 may be a side view type light emitting diode. That is, a light emitting diode having a structure in which the direction of light to be emitted is not directed straight up directly but is emitted toward the side, can be used as the light emitting unit 130 of the present invention. According to the illumination apparatus of the present invention, the light emitting unit 130 including the side-type light emitting diode is disposed directly underneath, and the light is diffused and reflected by utilizing the resin layer, which will be described below, It is possible to reduce the total number of light sources and to innovatively reduce the total weight and thickness of the lighting apparatus. In addition, the present invention can realize various condensing shapes by arranging a plurality of light emitting units 130 so that at least one light emitted from the light emitting unit 130 is superimposed, thereby achieving various geometric light design shapes to be described below . The arrangement structure of the light-emitting unit 130 will be described later in detail with reference to FIG. 7 to FIG.

The resin layer 150 is formed on the reflective member 120 and the light emitting unit 130 so that the resin layer 150 diffuses light emitted from the light emitting unit 130 forward. That is, the resin layer 150 is formed to embed the light emitting unit 130, thereby performing the function of dispersing the light emitted laterally in the light emitting unit 130. That is, the function of the conventional light guide plate can be performed in the resin layer 150.

The resin layer 150 of the present invention can be basically made of a resin capable of diffusing light. For example, the resin layer 150 of the present invention may be formed of an ultraviolet curable resin including an oligomer. More specifically, the resin layer 150 may be formed using a resin having a urethane acrylate oligomer as a main material. For example, a resin obtained by mixing a synthetic oligomer, a urethane acrylate oligomer and a polyacrylic polymer type, may be used. Of course, it may further comprise a monomer mixed with an isobornyl acrylate (IBOA), hydroxypropyl acrylate (HPA), 2-hydroxyethyl acrylate, or the like, which is a low boiling point diluent type reactive monomer. 1-hydroxycyclohexyl phenyl-ketone, etc.) or an antioxidant. However, the resin layer 150 of the present invention can be formed of any resin capable of performing a light diffusion function, which is currently being developed and commercialized or can be implemented according to future technological developments something to do.

According to the present invention, since the thickness of the conventional light guide plate can be reduced by the presence of the resin layer 150, the entire product can be thinned, and a flexible material can be obtained. The advantage of being easily applied, the advantage of improving the degree of freedom of design, and the advantage of being applicable to other flexible displays.

The reflective member 120 is formed on the upper surface of the printed circuit board 110 and has a structure in which the light emitting unit 130 is penetrated. The reflective member 120 of the present invention is formed of a material having a high reflection efficiency, thereby reflecting the light emitted from the light emitting unit 130 upward to reduce light loss. The reflective member 120 may be formed in a film form, and may include a synthetic resin dispersedly containing a white pigment in order to realize a property of reflecting light and promoting dispersion of light. Examples of the white pigment include titanium oxide, aluminum oxide, zinc oxide, lead carbonate, barium sulfate, calcium carbonate and the like. As the synthetic resin, polyethyleneterephthalate, polyethylene naphthalate, acrylic resin, colicarbonate, polystyrene, polyolefin , Cellulosic acid acetate, weather-resistant vinyl chloride, and the like can be used, but the present invention is not limited thereto.

Further, the illumination apparatus of the present invention may further include a reflection pattern 121 formed on the surface of the reflection member 120. The reflection pattern 121 serves to uniformly transmit light to the upper part by scattering and dispersing the incident light. The reflection pattern 121 may be formed by printing on the surface of the reflective member 120 using reflective ink containing any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and Polystyrene But is not limited thereto. In addition, the structure of the reflection pattern 121 has a structure including a plurality of protruding patterns. In order to increase the scattering effect of light, a dot pattern shape, a prism shape, a lenticular shape, a lens shape, However, the present invention is not limited thereto. In addition, the cross-sectional shape of the reflection pattern 121 may have a structure having various shapes such as a triangle, a quadrangle, a semicircle, and a sine wave.

The optical guide layer 210 may be formed between the reflective member 120 and the resin layer 150 and may have a protruding optical pattern formed on a surface thereof facing the reflective member 120. At this time, the optical guide layer 210 may be a prism sheet having a plurality of unit prism lens patterns, a microlens array sheet, or a lenticular lens sheet, or a combination thereof. A gap 230 is formed between the optical guide layer 210 and the reflective member 120 by a protruding optical pattern or an adhesive pattern 220 is formed in a shape corresponding to the protruding optical pattern And the optical guide layer 210 and the reflecting member 120 are bonded. The gap 230 is not formed at the portion where the adhesive pattern 220 is formed. By providing the optical guide layer 210 such as a prism sheet on which the protruding optical pattern is formed, the geometrical light pattern can be formed so that the shape of the light and the three-dimensional effect can be changed according to the viewing angle. In this case, if the reflective pattern 121 using the reflective ink is formed on the reflective member 120, the intensity of the light can be controlled. By using the adhesive pattern 220 between the reflective member 120 and the optical guide layer 210, The shape of the geometric light pattern can be deformed.

Fig. 4 shows a structure in which a bead is added to the illumination apparatus of the present invention shown in Fig.

Referring to FIGS. 3 and 4, the resin layer 150 of the present invention may further include a plurality of beads 151 having hollow (or voids) formed therein. The beads 151 may be mixed and diffused. 151 serve to improve the reflection and diffusion characteristics of light. For example, when the light emitted from the light emitting unit 130 is incident on the bead 151 inside the resin layer 150, the light is reflected and transmitted by the hollow of the bead 151 to be diffused and condensed, . At this time, the reflectance and diffusivity of light are increased by the beads 151, so that the light quantity and the uniformity of the outgoing light to be supplied later in the upward direction are improved, and as a result, the luminance of the illumination device can be improved.

The bead 151 may be appropriately adjusted to obtain a desired light diffusion effect. More specifically, the bead 151 may be adjusted in a range of 0.01 to 0.3% based on the weight of the entire resin layer 150, but is not limited thereto . That is, the light emitted laterally from the light emitting unit 130 is diffused and reflected through the resin layer 150 and the bead 151, and can proceed in the upward direction. The beads 151 may be made of any one selected from the group consisting of sillicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , And the diameter of the beads 151 may be in the range of 1 占 퐉 to 20 占 퐉, but the present invention is not limited thereto.

Fig. 5 shows a structure in which an optical sheet is added to the illuminating device of the present invention shown in Fig.

3 to 5, the illumination apparatus of the present invention further includes a first optical sheet 170 formed on the resin layer upper surface 150 and a second optical sheet 190 formed on the first optical sheet 170 As shown in FIG. Further, an optical pattern 183 may be further formed on the upper surface of the first optical sheet 170 or on the lower surface of the second optical sheet 190, and one or more additional optical sheets may be additionally formed on the second optical sheet 190 It is also possible to do.

The optical pattern 183 formed on the upper surface of the first optical sheet 170 or the lower surface of the second optical sheet 190 may be a light shielding pattern formed to prevent the light emitted from the light emitting unit 130 from concentrating, It is necessary to be aligned so as to be formed on the upper portion of the light emitting unit 130.

The first optical sheet 170 and the second optical sheet 190 can be formed using a material having a high light transmittance. For example, PET can be used.

The optical pattern 183 disposed between the first optical sheet 170 and the second optical sheet 190 basically functions to prevent the light emitted from the light emitting unit 130 from being concentrated. The optical pattern 153 may be formed in a light-shielding pattern so that a light-shielding effect can be realized in order to prevent the phenomenon that the light is excessively strong in strength and the optical characteristics are deteriorated or the yellow light is yellowish. The pattern may be formed by performing a printing process on the upper surface of the first optical sheet 170 or the lower surface of the second optical sheet 190 using light shielding ink.

The optical pattern 183 is not a function to completely block the light, but can be implemented so that the light shielding degree and the diffusing degree of the light can be controlled by one optical pattern so as to perform a function of partial shielding and diffusion of light. Furthermore, more particularly, the optical pattern 183 according to the present invention may be implemented with a superimposed printing structure of a complex pattern. The structure of superimposed printing refers to a structure in which one pattern is formed and another pattern is printed on the pattern.

For example, when the optical pattern 183 is implemented, at least one selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , and Silicon is formed on the lower surface of the polymer film (for example, the second optical sheet) A light-shielding pattern formed by using a light-shielding ink including a diffusion pattern formed using a light-shielding ink containing a substance and a mixed material of Al or Al and TiO 2 . That is, it is also possible to form a diffusion pattern on the surface of the polymer film by white printing, form a light shielding pattern thereon, or form a double structure in the reverse order. Of course, it will be obvious that the formation design of such a pattern can be variously modified in consideration of light efficiency, intensity, and shading ratio. Alternatively, it is also possible to form a light-shielding pattern, which is a metal pattern, in the middle layer in a sequential laminated structure, and to form a triplet in which a diffusion pattern is formed on the upper and lower portions, respectively. In such a triple structure, it is possible to select and implement the above-mentioned materials. As a preferable example, one of the diffusion patterns is realized by using TiO 2 having excellent refractive index, and CaCO 3 excellent in light stability and color is used together with TiO 2 The light diffusing pattern can be realized and the light efficiency and homogeneity can be ensured through the triple structure which realizes a light shielding pattern by using Al which is excellent in concealment. Particularly, CaCO 3 functions to reduce the exposure of yellow light and finally realize white light. Thus, it is possible to realize light with more stable efficiency. In addition to CaCO 3 , particles such as BaSO 4 , Al 2 O 3 , It is also possible to utilize inorganic materials having a large size and a similar structure. In addition, it is preferable that the optical pattern 183 is formed by adjusting the pattern density so that the pattern density becomes lower as the distance from the emitting direction of the light emitting unit 130 increases.

In addition, although not shown in the figure, one or more optical sheets may be additionally formed on the second optical sheet 190 as needed, and beads may be included in the resin layer as shown in FIG.

FIG. 6 shows a structure in which a transparent lens is added to the illumination apparatus of the present invention shown in FIG.

3 to 6, the illumination apparatus according to the present invention may further include a transparent lens 270 formed on the second optical sheet 190. The transparent lens 270 may be made of acrylic, PMMA, PC, or the like, and a transparent pattern 275 may be formed on a surface facing the second optical sheet 190 to form a three- Can be maximized. The cross-section of the transparent pattern 275 may be a polygonal shape such as a triangular shape or a quadrangular shape, a circular shape, an elliptical shape, a convex lens shape, or a concave lens shape, or a combination thereof. . In addition, a spacing portion 280 may be further formed between the transparent lens 270 and the second optical sheet 190, thereby maximizing the stereoscopic light shape realized thereby.

7 to 12 show a plan view and an actual operating state image of an embodiment of the structure in which the light emitting units are arranged.

Referring to FIG. 7, the plurality of light emitting units 130 may include one light source array X1. The plurality of light emitting units 130 included in the light source array X1 may be arranged in a line with equal spacing as shown in FIG. 7A, and the light emitting units 130 included in the light source array X1 Are all disposed in the lateral direction of the substrate 110 so that the outgoing light can be superimposed. However, this is merely an example, and a plurality of light emitting units may be arranged at different spacing intervals different from the drawing, and a plurality of light emitting units may emit light in different directions but may emit at least any one light. The plurality of light emitting units 130 included in the light source array X1 may be simultaneously driven or may be electrically insulated and individually driven and may be driven between the light emitting units 130 according to the amount of light emitted from the light emitting unit 130. [ Can be adjusted. When only one light source array X1 is used as shown in FIG. 7, it is preferable to use the light source array or the substrate for a narrow width.

8, a plurality of light emitting units may be composed of 1 to N (N is a natural number of 2 or more) light source arrays. In FIG. 8, a plurality of light emitting units 130 are arranged in the first light source arrays X1, And two light source arrays X2.

The first light source array X1 and the second light source array X2 which are adjacent to each other are electrically insulated from each other and can be individually driven. In addition, the light emitting units 130 included in the first and second light source arrays X1 and X2 may be electrically insulated from each other and individually driven. For example, although the light emitting units 130 included in the first light source array X1 are electrically connected to each other and driven simultaneously, the light emitting units 130 included in the second light source array X2 are electrically isolated from each other The light emitting units 130 included in the first light source array X1 may be driven separately and the light emitting units 130 included in the second light source array X2 may be driven simultaneously. All of the light emitting units included in the first and second light source arrays X1 and X2 may be simultaneously driven or may be individually driven.

The plurality of light emitting units 130 included in the first and second light source arrays X1 and X2 are arranged in a zigzag manner on the substrate 110 with the same spacing. And the light emitting units 130 included in the second light source array X2 can emit light toward the center of the substrate 110 such that the light emitting directions are opposite to each other. Although not shown in the drawing, the plurality of light emitting units 130 may be disposed at different intervals or the light emitting directions of the light emitting units included in the first and second light source arrays may be the same 7, the light emitting units may emit light in different directions if at least one of the lights is superimposed. 8, the light emitting units included in the first and second light source arrays may be arranged in a one-to-one correspondence with each other.

The amounts of light emitted from the light emitting units 130 included in the first and second light source arrays X1 and X2 may be the same or different. That is, the light quantity of the light emitting units 130 included in the first light source array X1 and the light quantity of the light emitting units 130 included in the second light source array X2 may be the same or different from each other. The light amounts of the light emitting units 130 included in the first light source array X1 may be the same or may be different from each other and the light amounts of the light emitting units 130 included in the second light source array X2 are all the same It may be, but it can be different.

9, the plurality of light emitting units 130 may include a light source array of X1 to X4, and the light emitting units 130 included in the first light source array X1 and the second light source array X2 may be mutually connected And the light emitting units 130 included in the third light source array X3 and the fourth light source array X4 may be arranged in a zigzag manner. The light emitting directions of the light emitting units 130 included in the first and third light source arrays X1 and X3 are the same in the left direction of the substrate and the light emitting units 130 included in the second and fourth light source arrays X2 and X4 The light emitting directions of the light emitting units 130 may be the same in the right direction of the substrate.

In this case, the arrangement of the light sources according to the light amount of the light emitting unit 130 may be changed to be laterally deflected, and the light sources may be arranged in a one-to-one correspondence instead of the zigzag.

It can be seen from FIG. 7 (b), FIG. 8 (b), and FIG. 9 (b) that the arrangement of the light emitting units described above is applied to change the shape of the light and the three- have.

9, the light emitting unit is composed of four light source arrays X1, X2, X3, and X4, and the first light source array X1 and the second light source array X2 emit light The units 130 are arranged in a zigzag manner and the light emitting units 130 included in the third light source array X3 and the fourth light source array X4 are arranged in a zigzag manner. The direction of light emission is directed toward the lower portion or the upper portion of the substrate.

Unlike FIGS. 7 to 10, if the light emitted from the light emitting unit is overlapped with one or more, the plurality of light emitting units 130 may be irregularly arranged as shown in FIG.

Further, a circular printed circuit board 110 may be used as shown in Fig. 12, and the structure of the lighting apparatus is not limited. The present invention can be easily applied to a curved surface having a flexible material by the resin layer and the flexible printed circuit board. Therefore, the lighting apparatus according to the present invention can variously arrange the light emitting units in any shape without any structural limitation, thereby improving the degree of freedom of design.

Various light condensing is possible through the optical guide layer in which the light emitting unit is arranged and the protruding optical pattern is formed, so that geometric deformation of the optical shape can be realized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that many suitable modifications and variations are possible in light of the present invention. Accordingly, all such modifications and variations as fall within the scope of the present invention should be considered.

110: printed circuit board
120: reflective member
121: reflection pattern
130: Light emitting unit
150: Resin layer
151: Bead
170: first optical sheet
183: Optical pattern
190: second optical sheet
210: light guide layer
220: adhesive pattern
230: gap
270: Transparent lens
275: Transparent pattern
280:

Claims (30)

A light guide layer comprising a protruding optical pattern forming a gap with an adjacent layer;
A plurality of light emitting units passing through the light guide layer;
And a resin layer formed on the light guide layer and the plurality of light emitting units,
Wherein at least one or more lights emitted from the plurality of light emitting units are superimposed.
The method according to claim 1,
Wherein the plurality of light-
And arranged in a line at a predetermined interval.
The method according to claim 1,
Wherein the plurality of light-
And a first light source array to an Nth light source array.
(Where N is a natural number of 2 or more)
The method of claim 3,
The first light source array to the Nth light source array may include:
A lighting device electrically insulated and driven separately.
The method of claim 3,
Emitting units included in at least one of the first to Nth light source arrays,
The lighting device is arranged at the same spacing.
The method of claim 3,
Emitting units included in at least one of the first to Nth light source arrays,
And the light output direction is the same.
The method of claim 3,
The light emitting units included in the Mth light source array and the light emitting units included in the (M + 1)
A lighting device arranged in a zigzag.
(Where M is a natural number of 1 or more and less than N)
The method of claim 3,
The light emitting units included in the Mth light source array and the light emitting units included in the (M + 1)
The illumination device being arranged in a one-to-one correspondence manner.
(Where M is a natural number of 1 or more and less than N)
The method of claim 3,
The light emitting units included in the Mth light source array and the light emitting units included in the (M + 1)
And the light output direction is the same.
(Where M is a natural number of 1 or more and less than N)
The method of claim 3,
The light emitting units included in the Mth light source array and the light emitting units included in the (M + 1)
Wherein the light output directions are opposite to each other.
(Where M is a natural number of 1 or more and less than N)
The method according to claim 1,
The optical waveguide layer comprises:
A prism sheet having a plurality of unit prism lens patterns, a microlens array sheet or a lenticular lens sheet, or a combination thereof.
The method according to claim 1,
The protruding optical pattern is formed,
And is formed on the other surface of the light guide layer in contact with the resin layer.
The method according to claim 1,
And a printed circuit board formed below the light guide layer.
14. The method of claim 13,
And a reflective member formed between the printed circuit board and the optical guide layer.
15. The method of claim 14,
And an adhesive pattern is formed between the light guide layer and the reflective member.
15. The method of claim 14,
And a reflection pattern is formed on the reflection member.
17. The method of claim 16,
The reflection pattern
Wherein the reflective ink comprises any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , silicon, and PS.
The method according to claim 1,
And a first optical sheet formed on an upper surface of the resin layer and dispersing light emitted therefrom.
19. The method of claim 18,
And a second optical sheet formed on the first optical sheet.
20. The method of claim 19,
And an optical pattern for shielding or reflecting light emitted to the upper surface of the first optical sheet or the lower surface of the second optical sheet.
21. The method of claim 20,
In the optical pattern,
A diffusion pattern formed using a light shielding ink containing at least one material selected from TiO 2 , CaCO 3 , BaSO 4 , and Silicon,
Wherein the light-shielding pattern formed by using a light-shielding ink containing Al or a mixture of Al and TiO 2 has an overlapping structure.
20. The method of claim 19,
And a transparent lens disposed on the second optical sheet.
23. The method of claim 22,
The transparent lens includes:
And a transparent pattern is formed on one surface facing the second optical sheet.
24. The method of claim 23,
In the cross-section of the transparent pattern,
A polygon, a circle, an ellipse, a convex lens, or a concave lens shape, or a combination thereof.
23. The method of claim 22,
And a spacing portion is formed between the second optical sheet and the transparent lens.
The method according to claim 1,
Wherein the resin layer comprises:
An illuminator comprising an ultraviolet curable resin comprising an oligomer.
27. The method of claim 26,
The oligomer,
And a material selected from the group consisting of Urethane Acrylate, Epoxy Acrylate, Polyester Acrylate and Acrylic Acrylate.
The method according to claim 1,
Wherein the resin layer comprises:
And further comprising a bead made of any one selected from the group consisting of silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , .
The method according to claim 1,
The light-
A lighting device comprising a side view type light emitting diode.
14. The method of claim 13,
Wherein the printed circuit board includes:
A lighting device comprising a flexible printed circuit board.
KR1020120148240A 2012-12-18 2012-12-18 Illuminating device KR102028386B1 (en)

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