KR102028386B1 - Illuminating device - Google Patents

Illuminating device Download PDF

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Publication number
KR102028386B1
KR102028386B1 KR1020120148240A KR20120148240A KR102028386B1 KR 102028386 B1 KR102028386 B1 KR 102028386B1 KR 1020120148240 A KR1020120148240 A KR 1020120148240A KR 20120148240 A KR20120148240 A KR 20120148240A KR 102028386 B1 KR102028386 B1 KR 102028386B1
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KR
South Korea
Prior art keywords
light
light emitting
emitting units
light source
pattern
Prior art date
Application number
KR1020120148240A
Other languages
Korean (ko)
Other versions
KR20140078930A (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

Abstract

The present invention provides a light guide layer including a protruding optical pattern forming a gap with an adjacent layer, a plurality of light emitting units penetrating the light guide layer, and a resin layer formed on the light guide layer and the plurality of light emitting units; It provides a lighting device that overlaps at least one or more light emitted from the plurality of light emitting units to implement a variety of geometric light pattern to reduce the effect of the shape of the light according to the viewing angle of the light source, reducing the overall thickness According to securing the effect and flexibility that can be achieved, it has the effect of improving the design freedom when designing the product.

Description

Lighting device {ILLUMINATING DEVICE}

The present invention relates to the field of lighting apparatus, and more specifically, to reduce the light guide plate structure to reduce the overall thickness and to ensure the light efficiency, and to form a projection optical pattern and array the light emitting unit so that the outgoing light overlaps the light according to the viewing angle It relates to a lighting device structure that can implement the effect of changing the shape and three-dimensional effect of.

LED (Light Emitted Diode) is a device that converts an electric signal into infrared or light by using compound semiconductor characteristics. Unlike fluorescent lamps, it does not use harmful substances such as mercury, so it causes less environmental pollution. It has the advantage of long life. In addition, it has a low power consumption compared to the conventional light source, and because of the high color temperature has excellent visibility and less glare.

Therefore, the current lighting apparatus has developed from the conventional light source such as incandescent lamps or fluorescent lamps to the light source using the above-described LED element as a light source, in particular, as disclosed in Korean Patent Publication No. 10-2012-0009209 There is provided an illumination device that performs a surface emitting function.

1 and 2 schematically show a conventional lighting device 1 performing a surface light emitting function. 1 and 2, in the conventional lighting device 1, a flat light guide plate 30 is disposed on a substrate 20, and a plurality of side type LEDs 10 (only one) are shown on the side of the light guide plate 30. Is arranged in the form of an array.

The light L incident from the LED 10 to the light guide plate 30 is reflected upward by a minute reflection pattern or a reflective sheet 40 provided on the bottom surface of the light guide plate 30, and exits from the light guide plate 30. 30) the light is emitted to the top to provide light to the outside through the outer housing 50 of the transparent material. As illustrated in FIG. 2, a plurality of diffusion apparatuses 31, prism sheets 32 and 33, and protective sheet 34 may be provided between the lighting apparatus 1 and the light guide plate 30 and the outer housing 50. It can be formed into a structure to further add the optical sheet of.

The above-described lighting device 1 serves to supply light evenly to the outside, and the light guide plate 30 is a component that performs the function of improving the brightness of the lighting device 1 and supplying uniform light in the light source LED. It is one of the plastic molded lenses to uniformly transmit the emitted light. Therefore, the light guide plate 30 is basically used as an essential component of the conventional lighting device 1, but due to the thickness of the light guide plate 30 itself, the thickness of the entire product is limited, and the light guide plate 30 is shown. As its own material is not flexible, it is difficult to apply to the outer housing 50 in which the bend is formed, and thus, the product design and the design deformation are not easy and the problem of implementing the geometrical dimension is difficult.

Korean Patent Publication No. 10-2012-0009209

The present invention has been proposed to solve the above-described problems, and by using the resin layer to guide the light emitted from the light emitting unit to the outside without using a light guide plate, the lighting device structure that can reduce the overall thickness Its purpose is to provide.

In addition, the present invention forms a light guide layer provided with a projecting optical pattern between the resin layer and the reflective member to implement a geometrical three-dimensional effect, by placing a light emitting unit so that the emitted light is superimposed various lighting shapes To provide that purpose.

The lighting apparatus of the present invention for solving the above problems, the light guide layer comprising a projection optical pattern for forming a gap with the adjacent layer; A plurality of light emitting units penetrating 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 overlap.

In the lighting apparatus of the present invention, the plurality of light emitting units may be arranged in a line at a predetermined interval.

In the lighting apparatus of the present invention, the plurality of light emitting units may include a first light source array to an Nth light source array.

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

In the lighting apparatus of the present invention, the light emitting units included in at least one of the light source arrays of the first to Nth light source arrays may be arranged at equal intervals.

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

In the lighting 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 + 1th light source array may be arranged in a zigzag.

In the lighting 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 + 1th light source array may be arranged in a one-to-one correspondence.

In the lighting 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 + 1th light source array may have the same light emission direction.

In the lighting 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 + 1th light source array may have opposite light emitting directions.

In the lighting apparatus of the present invention, the light guide layer may be any one or a combination of a prism sheet having a plurality of unit prism lens patterns, a microlens array sheet, and a lenticular lens sheet.

In the lighting apparatus of the present invention, the projecting optical pattern may be formed on the other surface of the light guide layer in contact with the resin layer.

In the lighting apparatus of the present invention, it may further include a printed circuit board formed under the light guide layer.

In the lighting apparatus of the present invention, it may further include a reflective member formed between the printed circuit board and the light guide layer.

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

In the lighting apparatus of the present invention, a reflective pattern may be formed on the reflective member.

In the lighting apparatus of the present invention, the reflective 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).

In the lighting apparatus of the present invention, it may further include a first optical sheet formed on the upper surface of the resin layer to disperse the light emitted.

In the lighting apparatus of the present invention, it may further include a second optical sheet formed on the first optical sheet.

In the lighting apparatus of the present invention, an optical pattern for shielding or reflecting 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 illumination unit of the invention, the optical pattern is, of TiO 2, CaCO 3, BaSO 4, diffusion formed using a light-shielding ink containing one or more substances selected from Silicon pattern, Al or Al and TiO 2 The light shielding pattern formed by using the light shielding ink including the mixture may have an overlapping structure.

In the lighting apparatus of the present invention, it may further include a transparent lens disposed on the second optical sheet.

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

In the lighting apparatus of the present invention, the cross section of the transparent pattern may be any one or a combination of polygonal, circular, elliptical, convex, concave lens shapes.

In the lighting apparatus of the present invention, a separation portion may be formed between the second optical sheet and the transparent lens.

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

In the lighting apparatus of the present invention, the oligomer may include any one material selected from urethane acrylate, epoxy epoxy, polyester acrylic, and acrylic acrylic.

In the lighting device of the present invention, the resin layer is silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , acrylic It may further comprise a bead consisting of any one selected from among.

In the lighting apparatus of the present invention, the light emitting unit may be formed of a side view type light emitting diode.

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

According to the present invention, the light guide layer is provided with a protruding optical pattern and the light emitting units are arranged so that the emitted light overlaps, thereby changing the shape and three-dimensionality of the light according to the viewing angle, and forming an adhesive pattern between the light guide layer and the reflective member. Therefore, the shape of the geometric light pattern can be modified, the aesthetics can be provided with improved lighting device, and has the advantage that can be applied to various kinds of lighting devices.

In addition, by removing the light guide plate to guide the light using the resin layer, the number of light emitting units can be reduced, and the overall thickness of the lighting device can be reduced.

In addition, according to the present invention, it is possible to secure flexibility by forming a lighting device using a flexible printed circuit board and a resin layer has the effect of increasing the degree of freedom of product design.

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

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it is to be understood that the embodiments shown in the specification and the drawings shown in the drawings are only exemplary embodiments of the present invention, and that various equivalents and modifications may be substituted for them at the time of the present application. In addition, in describing the operating principle of the preferred embodiment of the present invention in detail, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are terms defined in consideration of functions in the present invention, and the meaning of each term should be interpreted based on the contents throughout the present specification. The same reference numerals are used for parts having similar functions and functions throughout the drawings.

The present invention relates to a lighting apparatus, wherein the light guide plate is removed and replaced with a resin layer, but a protruding optical pattern further forms a light guide layer between the reflective sheet and the resin layer, and the light emitted from the light emitting unit overlaps the light. It is an object of the present invention to provide a lighting device structure that can be applied to various applications by implementing geometric shapes instead of simple surface emission by arraying units.

In addition, the lighting device according to the present invention can be applied to various lamp devices, such as a vehicle lamp, home lighting device, industrial lighting device that requires lighting. For example, when applied to a vehicle lamp, it is also applicable to headlights, vehicle interior lighting, doorscar, rear lights and the like. In addition, the lighting apparatus of the present invention can be applied to the field of the backlight unit applied to the liquid crystal display device, and can be applied to all the lighting related fields that are currently developed and commercialized or can be implemented according to future technology development.

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

Referring to FIG. 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. The light guide layer 210 having the reflective member 120 formed on the printed circuit board 110 and the protruding optical pattern is sequentially formed, and the light emitting unit 130 is buried, and the emitted light is emitted. It may be configured to include a resin layer 150 leading to the front.

The printed circuit board 110 refers to a substrate having a circuit pattern formed on the substrate, that is, a PCB. In particular, the printed circuit board 110 may be formed of a flexible printed circuit board (FPCB) in order to secure a certain flexibility.

The light emitting unit 130 is a portion in which a plurality of light sources are arranged to emit light on the printed circuit board 110, and the light emitting unit 130 of the present invention may be formed as a side view type light emitting diode. That is, a light emitting diode having a structure in which the direction of emitted light does not go straight to the upper portion but emits toward the side can be used as the light emitting unit 130 of the present invention. Accordingly, the lighting device of the present invention is to arrange the light emitting unit 130 made of a side-type light emitting diode in a direct type, using the resin layer to be described below to implement the light diffusion and reflection function to direct the light in the upper direction By diffusing and inducing, it is possible to reduce the total number of light sources and to innovatively reduce the overall weight and thickness of the lighting device. In addition, the present invention implements a variety of condensing shape by arranging a plurality of light emitting units 130 so that at least one of the light emitted from the light emitting unit 130 overlaps, thereby exhibiting a variety of geometric light design shape to be described below Will be. An arrangement structure of the light emitting unit 130 will be described in detail with reference to FIGS. 7 to 12.

The resin layer 150 is formed on the reflective member 120 and the light emitting unit 130, and the resin layer 150 diffuses the light emitted from the light emitting unit 130 to the front. That is, the resin layer 150 is formed to bury the light emitting unit 130, thereby performing a function of dispersing the light emitted from the light emitting unit 130 in the lateral direction. That is, the resin layer 150 may perform the function of the conventional light guide plate.

The resin layer 150 of the present invention may be basically made of a resin of a material capable of diffusing light. For example, the resin layer 150 of the present invention may be made of an ultraviolet curable resin including an oligomer, and more specifically, the resin layer 150 may be formed using a resin mainly containing a urethane acrylate oligomer. For example, the resin which mixed the urethane acrylate oligomer which is a synthetic oligomer, and the polymer type which is polyacryl can be used. Of course, the low-boiling dilution-type reactive monomer IBOA (isobornyl acrylate), HPA (Hydroxylpropyl acrylate), 2-HEA (2-hydroxyethyl acrylate) and the like may further include a monomer, and photoinitiator (such as, 1-hydroxycyclohexyl phenyl-ketone, etc.) or antioxidants can be mixed. However, the above description is just one example, and in addition to that, the resin layer 150 of the present invention may be formed of any resin capable of performing a light diffusing function that is currently developed and commercialized or may be implemented according to future technological developments. something to do.

According to the present invention, due to the presence of the resin layer 150 it is possible to innovatively reduce the thickness occupied by the conventional light guide plate, it is possible to realize the thinning of the entire product, and to have a flexible material bar curved surface Benefits include ease of application, design freedom, and 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 formed through. The reflective member 120 of the present invention is formed of a material having a high reflection efficiency to serve to reduce light loss by reflecting the light emitted from the light emitting unit 130 upward. The reflective member 120 may be formed in the form of a film, and may include a synthetic resin containing dispersion of a white pigment in order to realize a property of promoting light reflection and light dispersion. For example, titanium oxide, aluminum oxide, zinc oxide, lead carbonate, barium sulfate, calcium carbonate may be used as the white pigment, and polyethylene terephthalate, polyethylene naphthalate, acrylic resin, colicarbonate, polystyrene, polyolefin may be used as the synthetic resin. , Cellulose source acetate, weather resistant vinyl chloride, etc. may be used, but is not limited thereto.

In addition, the lighting apparatus of the present invention may further include a reflective pattern 121 formed on the surface of the reflective member 120. The reflective pattern 121 serves to uniformly transmit the light by scattering and dispersing the incident light. The reflective pattern 121 may be formed by printing on the surface of the reflective member 120 using a reflective ink including any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and polystyrene (PS). However, it is not limited thereto. In addition, the reflective pattern 121 has a structure having a plurality of protruding patterns, and in order to increase the light scattering effect, a dot pattern shape, a prism shape, a lenticular shape, a lens shape, or a combination thereof It may be made of, but is not limited thereto. In addition, the cross-sectional shape of the reflective pattern 121 may be formed in a structure having a variety of shapes, such as triangular, square, semi-circular, sinusoidal.

The light guide layer 210 may be formed between the reflective member 120 and the resin layer 150, and may have a structure in which a protruding optical pattern is formed on a surface facing the reflective member 120. In this case, the light guide layer 210 may be formed of any one or a combination of a prism sheet having a plurality of unit prism lens patterns, a microlens array sheet, and a lenticular lens sheet. As can be seen in the figure, a gap 230 is formed between the light guide layer 210 and the reflecting member 120 by the protrusion optical pattern, or the adhesive pattern 220 is formed in a shape corresponding to the protrusion optical pattern. Thus, the light guide layer 210 and the reflective member 120 are adhered to each other. The gap 230 is not formed at the portion where the adhesive pattern 220 is formed. As such, by providing a light guide layer 210 such as a prism sheet having a protruding optical pattern instead of simple surface emission, a geometrical optical pattern may be formed to implement an effect of changing the shape and three-dimensionality of light according to the viewing angle. In this case, when the reflective pattern 121 using the reflective ink is formed on the reflective member 120, the intensity of light can be adjusted, and the adhesive pattern 220 between the reflective member 120 and the light guide layer 210 is used. The shape of the geometric light pattern can be modified.

4 illustrates a structure in which beads are added to the lighting apparatus of the present invention shown in FIG. 3.

Referring to FIGS. 3 and 4, the resin layer 150 of the present invention may further include a plurality of beads 151 in which a hollow (or void) is formed therein, in a mixed and diffused form. 151 serves to improve 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, collected and emitted upward. . At this time, the reflectivity and the diffusion rate of the light is increased by the bead 151, thereby improving the amount and uniformity of the emitted light which is supplied to the upper direction later, and as a result, it is possible to achieve the effect of improving the brightness of the lighting device.

The content of the beads 151 may be appropriately adjusted in order to obtain a desired light diffusing effect, and more specifically, the content of the beads 151 may be adjusted in a range of 0.01 to 0.3% based on the total weight of the resin layer 150. . That is, the light emitted from the light emitting unit 130 in the lateral direction is diffused and reflected through the resin layer 150 and the beads 151 so that the light can travel upward. The bead 151 may be composed of any one selected from silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , and acrylic. The particle diameter of the bead 151 may be formed in the range of 1㎛ ~ 20㎛, but is not limited thereto.

FIG. 5 illustrates a structure in which an optical sheet is added to the lighting apparatus of the present invention shown in FIG. 3.

3 to 5, the lighting apparatus of the present invention further includes a first optical sheet 170 formed on the top surface 150 of the resin layer 150 and a second optical sheet 190 formed on the first optical sheet 170. It may be formed to include. In addition, an optical pattern 183 may be further formed on an upper surface of the first optical sheet 170 or a lower surface of the second optical sheet 190, and one or more optical sheets may be further formed on the second optical sheet 190. It is also possible.

The optical pattern 183 formed on the top surface of the first optical sheet 170 or the bottom surface of the second optical sheet 190 may be formed of a light shielding pattern formed to prevent concentration of light emitted from the light emitting unit 130. In order to be aligned to be formed on the upper portion of the light emitting unit (130).

The first optical sheet 170 and the second optical sheet 190 may be formed using a material having excellent light transmittance, and PET may be used as an example.

The optical pattern 183 disposed between the first optical sheet 170 and the second optical sheet 190 basically serves to prevent the light emitted from the light emitting unit 130 from being concentrated. The optical pattern 153 may be formed as a light shielding pattern so that a part of the light shielding effect may be implemented in order to prevent a phenomenon in which the light is excessively strong so that optical characteristics deteriorate or yellowish light is emitted. The pattern may be formed by performing a printing process on the top surface of the first optical sheet 170 or the bottom surface of the second optical sheet 190 using the light shielding ink.

The optical pattern 183 may not be a function of completely blocking the light, but may be implemented to adjust the light shielding degree or the diffusivity of the light with one optical pattern to perform a function of blocking and diffusing the light. Furthermore, more specifically, the optical pattern 183 according to the present invention may be implemented as a superimposed printed structure of a complex pattern. The superimposed printing structure refers to a structure that forms one pattern and prints another pattern shape on the upper portion thereof.

For example, in implementing the optical pattern 183, at least one selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , and Silicon on the lower surface of the polymer film (eg, the second optical sheet) in the light emitting direction. The light emitting pattern may include a diffusion pattern formed using a light shielding ink including a material and a light shielding pattern formed using a light shielding ink including Al or a mixture of Al and TiO 2 . That is, after the diffusion pattern is formed by white printing on the surface of the polymer film, a light shielding pattern may be formed thereon, or a double structure may be formed in the reverse order. Of course, it will be apparent that the patterned design of the pattern may be variously modified in consideration of light efficiency, intensity, and light blocking rate. Alternatively, the light-shielding pattern, which is a metal pattern, may be formed on the middle layer in the sequentially stacked structure, and a triple structure may be formed on the upper and lower portions thereof to implement the diffusion pattern. In such a triple structure, it is possible to select and implement the above-described materials. As a preferred example, one of the diffusion patterns is implemented using TiO 2 having excellent refractive index, and CaCO 3 having excellent light stability and color sense is used together with TiO 2. It is possible to realize different diffusion patterns, and to secure light efficiency and uniformity through the triple structure of the structure implementing the light shielding pattern using Al having excellent concealment. In particular, CaCO 3 functions to subtract the exposure of yellow light to finally implement white light, thereby realizing more stable light. In addition to CaCO 3 , particles such as BaSO 4 , Al 2 O 3 , and silicon beads Larger, similarly structured inorganic materials may be used. In addition, the optical pattern 183 is preferably formed by adjusting the pattern density so that the pattern density is lowered farther from the emission direction of the light emitting unit 130 in terms of light efficiency.

In addition, although not shown in the drawing, one or more optical sheets may be further formed on the second optical sheet 190 as necessary, and beads may be included in the resin layer as shown in FIG. 4.

FIG. 6 illustrates a structure in which a transparent lens is added to the lighting apparatus of the present invention shown in FIG. 5.

3 to 6, the lighting 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 a material such as acrylic, PMMA, PC, etc., and a three-dimensional optical shape formed by the protruding optical pattern by forming a transparent pattern 275 on a surface facing the second optical sheet 190. Can be maximized. At this time, the cross-section of the transparent pattern 275 may be made of any one or a combination of polygonal, circular, elliptical, convex lens shape, concave lens shape, such as triangle, square, and the like, but may be formed in various shapes without being limited thereto. . In addition, the separation unit 280 may be further formed between the transparent lens 270 and the second optical sheet 190, thereby maximizing the three-dimensional optical shape implemented.

7 to 12 illustrate a plan view and an actual operating state image of an embodiment of a structure in which a light emitting unit is disposed.

Referring to FIG. 7, the plurality of light emitting units 130 may be formed of one light source array X1. In this case, the plurality of light emitting units 130 included in the light source array X1 may be arranged in a line at the same distance as shown in FIG. 7A, and the light emitting units 130 included in the light source array X1. The light emitting directions of the plurality of light emitting diodes may be formed in the lateral direction of the substrate 110 so that the emitted light may overlap. However, this is just one example, and a plurality of light emitting units may be arranged at different distances from each other, unlike the drawings, and the plurality of light emitting units emit light in different directions, but at least one of the light emitted may overlap. In addition, the plurality of light emitting units 130 included in the light source array X1 may be driven at the same time, or may be driven separately by being electrically insulated, and between the light emitting units 130 according to the amount of light emitted from the light emitting unit 130. You can adjust the interval. In the case where only one light source array X1 is formed as shown in FIG. 7, it is preferably used for a narrow light source or a substrate.

Referring to FIG. 8, the plurality of light emitting units may include 1 to N light source arrays (N is a natural number of 2 or more). In FIG. 8, the plurality of light emitting units 130 may include a first light source array X1 and a first light source array. It is assumed that it consists of two light source array (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 may 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 may be individually driven. For example, the light emitting units 130 included in the first light source array X1 are electrically connected to each other and simultaneously driven, but the light emitting units 130 included in the second light source array X2 are electrically insulated from each other. The light emitting units 130 included in the second light source array X2 are electrically connected to each other and driven at the same time. However, the light emitting units 130 included in the first light source array X1 may be driven. The light emitting units included in the first and second light source arrays X1 and X2 may be driven at the same time or may be driven separately.

The plurality of light emitting units 130 included in the first and second light source arrays X1 and X2 are arranged in a zigzag pattern on the substrate 110 at equal intervals, respectively, and the first light source array X1. ) And the light emitting units 130 included in the second light source array X2 may emit light toward the center of the substrate 110 such that the light emission directions face each other, that is, the opposite directions. However, this is only one example, and although not shown in the drawings, the plurality of light emitting units 130 may be disposed at different intervals or may have the same light emission direction of the light emitting unit included in the first and second light source arrays. Rather, if at least one of the light emitted as described above in FIG. 7 overlaps, the plurality of light emitting units may emit light in different directions. In addition, unlike FIG. 8, the light emitting units included in the first and second light source arrays may be disposed to correspond to each other one-to-one.

The amount 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 amount of the light emitting units 130 included in the first light source array X1 and the light amount of the light emitting units 130 included in the second light source array X2 may be the same but may be different from each other. In addition, the light amounts of the light emitting units 130 included in the first light source array X1 may all be the same, but may be different. The light amounts of the light emitting units 130 included in the second light source array X2 are also the same. You can, but they can be different.

Referring to FIG. 9, the plurality of light emitting units 130 may be configured as light source arrays 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 are mutually different. The light emitting units 130 included in the zigzag and included in the third light source array X3 and the fourth light source array X4 may be arranged in a zigzag pattern. In addition, the light exit 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 are included in the second and fourth light source arrays X2 and X4. The light emitting direction of the light emitting units 130 may be the same in the right direction of the substrate.

At this time, the arrangement of the light source may be changed by being deflected from side to side according to the amount of light of the light emitting unit 130, and may be arranged in a one-to-one correspondence instead of zigzag, as described with reference to FIG. 8.

It can be seen that the shape and three-dimensionality of the light change according to the viewing angle through the actual image of the lighting device in FIG. 7 (b), 8 (b) and 9 (b) applying the above-described arrangement of the light emitting unit. have.

Referring to FIG. 10, similar to FIG. 9, the light emitting unit includes four light source arrays X1, X2, X3, and X4, and emits light included in the first light source array X1 and the second light source array X2. Although the units 130 are arranged in a zigzag pattern with each other, 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 pattern with each other, the light emitting unit 130 is different from FIG. 9. The light exit direction of these is directed toward the bottom or top of the substrate.

Unlike in FIGS. 7 to 10, when one or more lights emitted from the light emitting unit overlap, the plurality of light emitting units 130 may be irregularly arranged as shown in FIG. 11.

In addition, as shown in FIG. 12, the circular printed circuit board 110 may be used, and the structure of the lighting apparatus is not limited. The present invention can be easily applied to the curved surface to have a flexible material by the resin layer and the flexible printed circuit board. Therefore, the lighting apparatus according to the present invention can be variously arranged the light emitting unit in any shape without structural limitations to improve the degree of freedom of design.

Various light condensing is possible through the light guide layer having the arrangement structure of the light emitting unit and the protruding optical pattern, thereby realizing the deformation of the geometric light shape.

As described above and described with reference to a preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described as such, without departing from the scope of the technical idea It will be appreciated by those skilled in the art that many suitable modifications and variations of the present invention are possible. Accordingly, all such suitable modifications and variations and equivalents should be considered to be within the scope of the present invention.

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: spacer

Claims (30)

A light guide layer including a protruding optical pattern forming a gap with an adjacent layer;
A plurality of light emitting units penetrating the light guide layer;
A resin layer formed on the light guide layer and the plurality of light emitting units;
A first optical sheet formed on an upper surface of the resin layer to disperse the emitted light;
A second optical sheet formed on the first optical sheet; And
It includes a transparent lens disposed on the second optical sheet,
At least one light emitted from each of the plurality of light emitting units is overlapped,
The transparent lens,
Illumination device formed with a transparent pattern on one surface facing the second optical sheet.
A light guide layer including a protruding optical pattern forming a gap with an adjacent layer;
A plurality of light emitting units penetrating the light guide layer;
A resin layer formed on the light guide layer and the plurality of light emitting units;
A first optical sheet formed on an upper surface of the resin layer to disperse the emitted light;
A second optical sheet formed on the first optical sheet; And
It includes a transparent lens disposed on the second optical sheet,
At least one light emitted from each of the plurality of light emitting units is overlapped,
Illumination device is formed between the transparent lens and the second optical sheet separation.
The method according to claim 1 or 2,
The plurality of light emitting units,
An illumination device comprising the first to Nth light source arrays.
(N is a natural number of 2 or more)
The method of claim 3, wherein
The first light source array to the Nth light source array,
Electrically isolated and individually driven lighting devices.
The method of claim 3, wherein
The light emitting units included in at least one light source array of the first to Nth light source arrays may include:
Lighting devices arranged at equal intervals.
The method of claim 3, wherein
The light emitting units included in at least one light source array of the first to Nth light source arrays may include:
Lighting device with the same light exit direction.
The method of claim 3, wherein
The light emitting units included in the Mth light source array and the light emitting units included in the M + 1th light source array include:
Lighting device arranged in a zigzag.
(However, M is more than 1 natural number less than N)
The method of claim 3, wherein
The light emitting units included in the Mth light source array and the light emitting units included in the M + 1th light source array include:
Lighting device is arranged one-to-one correspondence.
(However, M is more than 1 natural number less than N)
The method of claim 3, wherein
The light emitting units included in the Mth light source array and the light emitting units included in the M + 1th light source array include:
Lighting device with the same light exit direction.
(However, M is more than 1 natural number less than N)
The method of claim 3, wherein
The light emitting units included in the Mth light source array and the light emitting units included in the M + 1th light source array include:
Illumination device with the opposite direction of light output.
(However, M is more than 1 natural number less than N)
The method according to claim 1 or 2,
The light guide layer,
An illumination device comprising any one or a combination of a prism sheet, a microlens array sheet, and a lenticular lens sheet having a plurality of unit prism lens patterns.
The method according to claim 1 or 2,
The projecting optical pattern,
Illumination device formed on the other surface of the light guide layer in contact with the resin layer.
The method according to claim 1 or 2,
And a printed circuit board formed under the light guide layer.
The method of claim 13,
And a reflecting member formed between the printed circuit board and the light guide layer.
The method of claim 14,
Illumination device formed with an adhesive pattern between the light guide layer and the reflective member.
The method of claim 14,
Illumination device formed with a reflective pattern on the reflective member.
The method of claim 16,
The reflection pattern,
Illumination apparatus formed with a reflective ink comprising any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , silicon, PS.
delete delete The method according to claim 1 or 2,
And an optical pattern for shielding or reflecting light emitted from an upper surface of the first optical sheet or a lower surface of the second optical sheet.
The method of claim 20,
The optical pattern is,
A diffusion pattern formed using a light shielding ink including at least one material selected from TiO 2 , CaCO 3 , BaSO 4 , and Silicon,
An illumination device in which a light shielding pattern formed by using a light shielding ink containing Al or a mixture of Al and TiO 2 has an overlapping structure.
delete delete The method of claim 1,
The cross section of the transparent pattern,
Illumination device of any one or a combination of polygonal, circular, oval, convex, concave lens shape.
delete The method according to claim 1 or 2,
The resin layer,
Lighting apparatus consisting of an ultraviolet curable resin containing an oligomer.
The method of claim 26,
The oligomer,
Lighting device comprising any one selected from Urethane Acrylate, Epoxy Acrylate, Polyester Acrylate, and Acrylic Acrylate.
The method according to claim 1 or 2,
The resin layer,
Lighting device further comprises a bead made of any one selected from silicon (silica), silica (silica), glass bubble (glass bubble), PMMA, urethane (urethane), Zn, Zr, Al 2 O 3 , acrylic (acryl) .
The method according to claim 1 or 2,
The light emitting unit,
Lighting device consisting of side view type light emitting diode.
The method of claim 13,
The printed circuit board,
Lighting device consisting of flexible printed circuit board.
KR1020120148240A 2012-12-18 2012-12-18 Illuminating device KR102028386B1 (en)

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KR101192275B1 (en) * 2010-03-16 2012-10-17 엘지이노텍 주식회사 Back light umit within resin layer for light-guide and LCD using the same
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