KR20150130809A - Lighting Device - Google Patents

Abstract

The present invention relates to a lighting device, capable of outputting plane light to a surrounding part of linear light while displaying the linear light with a three-dimensional effect by using incident light having directivity. The lighting device includes a light guide part including a first surface and a second surface, the opposite to the first surface, and inducing the incident light; a three-dimensional effect forming part including a pattern on a surface or inside the light guide part; a light source part supplying the incident light into the light guide part; and a spread inducing part generating the plane light, covering a second area of the second surface with the light source by spreading discharge light, coming from the light source part to the second surface. The pattern includes multiple pattern units separately including a slope surface with a slope angle to the first or second surface. The pattern units induce the incident light in a first surface direction, faced by the first surface, or second surface direction, faced by the second surface, by refracting and reflecting the light on the slope surface in order to convert the incident light into linear light of a first path, extended in an orthogonal direction to each pattern extension direction of the pattern units, and then generate the linear light on a first area of the second surface.

Description

[0001]

The present invention relates to a lighting device for outputting plane light around linear fluorescent light while displaying linear fluorescent light having a stereoscopic effect by using incident light having directionality.

LED (Light Emitting Diode) is a kind of compound semiconductor device that emits light by converting current when it is applied to current. A light source using an LED element has advantages such as low power consumption, high color temperature and long life time compared to a conventional light source such as a fluorescent lamp.

Most backlight devices having an LED light source have a side illuminating type structure in which a plurality of LED light sources are disposed on at least one side of a light guide plate and are diffused in the right and left direction by diffusing upward leaked light between a reflection film and a light guide plate, And is configured to minimize the deviation.

However, in the conventional backlight device, the light efficiency of the lighting device is reduced due to the thickness of the light guide plate itself by using the light guide plate, the thickness of the device is limited, and the light guide plate itself is not flexible, It is not easy to modify the product design and design.

In addition, since most of the lighting apparatuses using the conventional LED light source provide flat lighting of a simple form, in order to realize lighting with a stereoscopic effect, a plurality of light sources must be arranged in three dimensions, There is a disadvantage that it is difficult to install and maintain.

According to an embodiment of the present invention, there is provided an illumination device capable of increasing the diversity of optical images and increasing the light efficiency by converting incident light into linear light having a stereoscopic effect through pattern design and displaying the light, and adding plane light around the linear fluorescent light do.

Another embodiment of the present invention is to provide a lighting device that can be easily applied to flexible or curved applications while outputting a combination of linear light and planar light having a stereoscopic effect of a geometrical shape.

According to an aspect of the present invention, there is provided a lighting apparatus including a light guide unit having a first surface and a second surface opposite to the first surface and guiding incident light, A light source section for supplying incident light to the inside of the light guide section, and a second light source section for diffusing light emitted from the light source section to the second surface to generate planar light covering the light source on the second area of the second surface And a diffusion inducing portion. Here, the patterns are sequentially arranged and include a plurality of pattern units each having a sloped surface having an inclination angle with respect to the first surface or the second surface, and the plurality of pattern units are arranged in such a manner that incident light is refracted and reflected by the inclined surface, To a first surface direction facing the first surface or a second surface direction facing the second surface so as to be converted into linear rays of a first path extending in a direction orthogonal to each pattern extending direction of the plurality of pattern units, Area.

In one embodiment, the second region surrounds at least a portion of the first region, and at least a portion of the second region is located above the light source of the light source portion.

In one embodiment, the diffusion inducing portions include a first reflector and a second reflector, which face each other and are disposed with a spacing therebetween.

In one embodiment, the first reflector and the second reflector have one end disposed on the second surface and the other end extending obliquely outwardly on the second surface.

In one embodiment, the first reflector and the second reflector have a hollow shape in which opposite side edges facing each other are connected to each other, and the other ends of the plurality of diffusion inducing portions each having a hollow shape are arranged on a second region of the second surface Dispersed. A diffusion member may be further provided between the first reflector and the second reflector.

In one embodiment, the illumination device may further comprise a first reflector and a diffusing member disposed on the other end of the second reflector. The diffusion member may be arranged to diffuse the light emitted through the space between the first reflector and the second reflector at one end on a plane of a predetermined width parallel to the second surface.

In one embodiment, the diffusion inducing portion may comprise a plurality of pairs of first and second reflectors surrounding a second side edge of the light guide portion. One end of the first reflector and the second reflector of the first pair and one end of the second reflector and the first reflector of the second pair may be integrally disposed on the light source of the light source.

According to the present invention, incident light is converted into linear light having a stereoscopic effect through pattern design and displayed, and planar light is added around the linear fluorescent light by using an unintended light source or a hot spot light source when forming linear light, It is possible to provide a lighting device with improved light efficiency.

Further, according to the present invention, it is possible to implement an illumination device that outputs planar light combined with linear light without using a diffusion plate, a diffusion sheet, or a diffuser using a pattern in an illumination device using stereoscopic effect linear fluorescent light.

Further, according to the present invention, not only the front luminance can be improved by combining the stereoscopic effect linear light and the planar light around the linear fluorescent light, but also the light distribution can be adjusted, and it can be easily applied to a flexible or curved application, It is possible to provide an illumination device having excellent durability and low manufacturing cost.

In addition, according to the present invention, it is possible to provide an illumination device that displays light images of various colors combining a stereoscopic light and a plane light by using an LED (Light Emitting Diode) light source. The above-described lighting apparatus is useful for an indoor / outdoor lighting apparatus, a vehicle lamp, and the like.

1 is a perspective view of a lighting apparatus according to an embodiment of the present invention;
2A is a plan view of the illumination device of FIG.
Fig. 2b is a plan view of a modification of the illumination device of Fig.
Fig. 3 is an operational state diagram of the illumination device of Fig.
Fig. 4 is an exemplary view of the operating state of the illuminating device according to the comparative example
Fig. 5 is a partial plan view of the illumination device of Fig.
6 is a partially enlarged cross-sectional view for explaining the principle of generating stereoscopic effect linear fluorescent light of the illumination device of FIG.
7 is a schematic cross-sectional view of a lighting device according to another embodiment of the present invention
Fig. 8 is an exemplary view showing a modified example of the diffusion inducing portion of the illumination device of Fig. 7
9 is a cross-sectional view of a lighting device according to another embodiment of the present invention
10 is a partially enlarged cross-sectional view of the illumination device of FIG. 9
11 is a partial cross-sectional view of a lighting device according to another embodiment of the present invention
12 is a partial cross-sectional view of a light guide portion of a lighting apparatus according to another embodiment of the present invention
Figs. 13 to 15 illustrate examples of a pattern of a three-dimensional effect forming portion employable in the illumination device of the present embodiment
16 is a schematic plan view for explaining a lighting apparatus according to another embodiment of the present invention
Fig. 17 is an exemplary diagram of an operating state of a comparative example for explaining the operation principle of the illuminating device of Fig. 16
18 is an exemplary diagram of a lighting apparatus according to another embodiment of the present invention

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.

1 is a perspective view of a lighting apparatus according to an embodiment of the present invention. Figure 2a is a plan view of the illumination device of Figure 1;

Referring to FIGS. 1 and 2A, the illumination device 100 according to the present embodiment includes a light guide portion 10, a pattern layer 20a, and a diffusion inducing portion 50. [ The lighting apparatus 100 may further include a light source 30, a printed circuit board 31, and a reflective layer 40.

The light guide portion 10 guides the incident light from one side to the other side by internal reflection. The light guide portion 10 has a first surface (or an upper surface) and a second surface (or a lower surface) which is an opposite surface of the first surface and has a predetermined thickness between the first surface and the second surface, When provided, the light guide portion 10 is a medium defined by the first and second surfaces and the sides extending between the edges thereof. In this case, incident light incident into the light guide portion 10 or irradiated inside the light guide portion 10 is totally reflected within the medium and moves from one side (or first side) to the other side (or second side).

The light guide portion 10 is made of a material such as glass or resin. When the light guide portion 10 is provided with a resin, the material of the light guide portion 10 may include a silicone-based resin. For example, the material of the light guide portion 10 made of a silicone-based resin may be selected from the group consisting of vinylated organopolysiloxanes, hydrogen-containing organopolysiloxanes, vinylated silicates, A platinum curing catalyst and an additive. The additives include photoinitiators and antioxidants.

When the light guide portion 10 is formed of a resin layer, the material composition of the light guide portion 10 is 20 to 40 wt% of the organopolysiloxane having a vinyl group, 20 to 40% of the hydrogen-containing organopolysiloxane, 10 to 20 wt% of a silicate having a vinyl group, 1 to 3 wt% of a platinum curing catalyst, and 1 to 3 wt% of an additive. When the light guide portion 10 is implemented with a silicone resin layer, the heat resistance of the lighting device 100 can be increased to 125 캜 or higher, thereby satisfying the heat resistance condition required for the vehicle headlight.

When the light guide portion 10 is formed of a resin layer, the lighting device 100 may have a predetermined flexibility according to the thickness of the resin layer. For example, the light guide portion 10 may be flexible enough to be wound on a roll, in which case the thickness of the resin layer is less than about 250 microns. With this flexibility, the light guide portion 10 can have various shapes depending on the structure and shape of the applications. For example, when the illumination device 100 is used as a vehicle lamp, particularly a rear combination lamp or a headlamp, the light guide portion 10 may have a shape (planar shape) similar to an outer lens of a vehicle lamp. The outer lens may have a shape of a human eye or a substantially parallelogram shape (see Figs. 16 and 17), but is not limited thereto.

The pattern layer 20a is disposed on the first surface of the light guide portion 10. [ The pattern layer 20a can be bonded by the adhesive layer or can be directly bonded to the first surface of the light guide portion 10 by the stress of the material. The pattern layer 20a has a second surface bonded to the first surface of the light guide portion 10 and a first surface opposite to the second surface. The pattern layer 20a has a pattern (refer to reference numeral 22 in Fig. 5) arranged on the first surface.

The pattern constitutes a three-dimensional effect forming section (see reference numeral 20 in Fig. 5), and converts incident light to generate linear light having a three-dimensional effect. The pattern will be described in detail below.

The pattern layer 20a is made of a material capable of securing ease of processing and durability of the pattern. As the material of the pattern layer 20a, a thermoplastic polymer, a photocurable polymer, or the like can be used.

The diffusion inducing portion 50 is arranged on the second surface of the light guide portion 10. The diffusion inducing unit (50) diffuses and guides the outgoing light to the second surface. When the diffusion inducing unit 50 has a predetermined light transmittance, the diffusion inducing unit 50 implements planar light in the second plane direction through which the second plane is directed through the diffusion light. In this embodiment, the diffusion inducing portion 50 is a hexahedron having a hollow portion 52. The diffusion inducing portion 50 has an inclined slot shape in which one end of the diffusion inducing portion 50 exposing one end of the hollow portion 52 is in contact with the second surface But is not limited thereto.

The outgoing light introduced into one end of the bubble inducing unit 50 is light that is incident on the LED element used as a light source either directly or after being reflected by the reflective layer and emerging directly above the LED element. .

According to the above-described diffusion inducing portion 50, the stereoscopic effect linear fluorescent light is realized by the pattern of the pattern layer 20a in the direction of the second surface of the light guide portion 10, And the optical image in which the linear fluorescent light and the plane light are combined can be expressed.

The light source unit 30 supplies incident light to the inside of the light guide unit 10. The light guide unit 10 may be arranged to supply incident light to the inside of the light guide unit 10 from the outside of the light guide unit 10. In this embodiment, And the incident light is supplied.

The light source unit 30 may be an LED package including at least one LED (Light Emitting Diode) device. In this embodiment, the light source unit 30 includes first and second side surfaces facing each other and a second side surface of the light guide unit 10 having a rectangular parallelepiped shape. Twelve LED packages (not shown) are arranged in a staggered manner on the first surface or the second surface, . ≪ / RTI >

The LED device may be a top view type or a side view type. In order to adjust the angle of incidence of incident light on the first surface or the second surface of the light guide portion 10, the LED element may be tilted at a predetermined angle when the side-view LED element is installed. When the upper mold is used, the light source unit 30 may be mounted on the printed circuit board 31 by a soldering process while being laid down sideways.

The printed circuit board 31 is disposed on the first surface of the light guide portion 10. The light source unit 30 can be buried by the light guide unit 10 on the printed circuit board 31. The printed circuit board 31 includes a pad unit on which the light source unit 30 is mounted and a wiring for transmitting power or a signal to the light source unit 30. [

In this embodiment, the printed circuit board 31 may be rigid or flexible. In the case of a rigid printed circuit board, the material of the printed circuit board 20 may be FR4 (Flame Retardant Composition 4). When a rigid printed circuit board is used, the cost can be reduced as compared with the case of using a flexible printed circuit board.

The reflective layer 40 is disposed between the printed circuit board 31 and the light guide portion 10. The reflective layer 40 is formed of a material having a high reflection efficiency so that the light of the light source portion 30 emerging in the direction of the first surface facing the first surface of the light guide portion 10 due to reflection and refraction in the pattern of the pattern layer 20a To the pattern layer 20a and the light guide portion 10 side.

As the material of the reflection layer 40, a synthetic resin containing white pigment having excellent light reflection characteristics can be used. As the white pigment, titanium oxide (TiO ₂ ), aluminum oxide (Al ₂ O ₃ ), zinc oxide (ZnO), barium sulfate (BaSO ₄ ), calcium carbonate (CaCO ₃ ), carbonate and the like can be used. But are not limited to, polyethylene terephthalate, polyethylene naphthalate, acrylic, polycarbonate, polystyrene, polyolefin, cellulose acetate, weather-resistant vinyl chloride, and the like. In addition, the reflective layer 40 may be formed of Ag, Al, stainless steel, or the like according to the implementation. By using the reflective layer 40, the light loss of the illumination device 100 can be reduced, and the linear light having the stereoscopic effect can be expressed more clearly.

 In the above-described configuration, after the side-type or top-type LED element is mounted on the printed circuit board 31 in a tilted manner or tilted, the reflective layer 40 and the light guide portion 10 are formed in order, A part of the incident light of the LED element supplied into the light guide part 10 passes through the second surface of the light guide part 10 according to the light output angle of the emitting surface of the LED element, The light is converted into the outgoing light traveling in the two-plane direction or the outgoing light which is reflected by the pattern immediately before the emitting surface of the LED element or the reflective layer 40 under the pattern, passes through the second surface, . The emitted light is diffused and guided by the diffusion inducing portion 50 and is realized as plane light covering a part of the second surface in the second surface direction.

2B is a plan view of a modification of the illumination device of FIG. 2A.

Referring to FIG. 2B, the illumination device according to the present embodiment includes a light guide unit 10, a three-dimensional effect forming unit, a light source unit 30, and a diffusion inducing unit 50.

The diffusion inducing unit 50 includes a first reflector (see 51a in FIG. 8) and a second reflector (see 51b in FIG. 8). The first reflector and the second reflector have one end disposed on the second surface of the light guide portion 10 and the other end extending obliquely outwardly on the second surface.

For example, in more detail, the first reflector and the second reflector may have a hollow shape with opposite side edges facing each other. The other end portions 52a to 52f of the plurality of diffusion inducing portions 50 each having a hollow shape are dispersedly disposed on the second region of the second surface of the light guide portion 10. [ The spacing, which is the hollow between the first and second reflectors, can be filled with a diffusion member.

According to this embodiment, it is possible to provide an illumination device to which planar light of various optical images is added by adjusting the area and density of the other end of the diffusion inducing unit 50 in the form of a plurality of point light sources.

3 is an operational state diagram of the illumination device of Fig.

3, when power is supplied to the light source unit 30 having twelve LED packages in the illumination device 100 of the present embodiment, the first light source unit 30 disposed near the first side of the light guide unit 10 To 6 < th > LED packages irradiate incident light toward the second side from the first side, and seventh to twelfth LED packages disposed in the vicinity of the second side of the light guide portion 10 emit light from the second side to the first side To irradiate incident light.

At this time, the incident light is guided to a specific optical path (first path) according to the pattern design (pattern pitch, pattern arrangement direction, etc.) of the pattern layer 20a having a refractive index difference of 0.2 or less from the light guide portion 10, And converted into stereoscopic effect fluorescent light BL1 showing a depth sense in the thickness direction of the light guide portion 10 by refraction.

In the present embodiment, the stereoscopic effect linear fluorescent light BL1 is incident on the light guiding portion 10 in the same or different directions or in directions opposite to each other depending on the pattern arrangement directions of the patterns located in different regions of the light guiding portion 10, And is output as twelve stereophonic linear fluorescent lights extending to the light path D1.

Each of the three-dimensional effect linear fluorescent light has two linear fluorescent lights because each LED package uses two LED elements. When the LED package uses one LED element, each stereophonic linear fluorescent light in the same pattern structure forms one line Fluorescence is displayed.

In the illumination device 100 of the present embodiment, when power is supplied to the light source unit 30, light emitted from the LED package in the second surface direction is diffused and guided by the diffusion inducing unit 50, 10 on the second surface of the substrate.

The planar light BL2 may be plane light realized in the vicinity of the hollow portion 52 of the diffusion inducing portion 50 or may be implemented in the entire diffusion inducing portion 50 including the hollow portion 52 according to the structure and transparency of the diffusion inducing portion 50 Lt; / RTI >

1 to 3, for the sake of convenience, the outgoing light emitted to the upper portion of the LED package in which the diffusion inducing portion 50 is not disposed and the hotspots (the upper hot spot portion of the LED package shown in FIG. 4 However, there is actually light emitted from the light source in front of the light source portion, hot light emitted from the light source in front of the light source portion, or outgoing light coming in from the side opposite to the hot spot light or pattern, and a separate diffusion inducing portion is added to utilize such emitted light or hotspot light. Of course. The diffusion inducing portion disposed further may be the same as the diffusion inducing portion 50 described above except that it is disposed symmetrically.

1 to 3 show a lighting device including one diffusion inducing portion disposed on one side edge of the second surface, the present invention is not limited to such a configuration, and the light guide portion of a rectangular parallelepiped shape The illuminating device may be implemented by a planar light enclosing the edge of the second surface in the form of a rectangular frame and a linear fluorescent light within the planar light by providing diffusion guide portions on all four sides of the two surfaces.

In the above-described embodiment, the diffusing inducing portion 50 diffusively guides the outgoing light through the hollow portion 52. However, the present invention is not limited to such a configuration, Or may be implemented with an illumination device in which a member is inserted or filled. In this case, it is possible to realize more uniform plane light than before use of the diffusion member.

4 is an exemplary view showing an operating state of a lighting apparatus according to a comparative example.

As shown in Fig. 4A, when the diffusion inducing portion (refer to reference numeral 50 in Figs. 1 to 3) of this embodiment is omitted, the lighting device of the comparative example generates hot spots in the upper portion of the light source portion (LED package) , Thereby providing an unpleasant glare to a user using the lighting apparatus, and can have disadvantages such as unevenness of illumination, deterioration of luminance, and the like.

In addition, in the lighting apparatus of the comparative example, when the power supply to the light source unit is cut off, the light source unit may be exposed to the outside through the light guide unit, which may not be good.

In this embodiment, the diffusion guide portion on the upper portion of the light guide portion is used to realize plane light by using unwanted emission light or hotspot light in the lighting device, and to prevent the light source portion from being exposed to the outside, .

Figure 5 is a partial plan view of the illumination device of Figure 2a. FIG. 5 corresponds to a plan view of the illumination device of FIG. 2A with the light guide portion 10 and the diffusion inducing portion 50 removed.

5, the illumination apparatus 100 according to the present embodiment includes a light guide portion 10, a three-dimensional effect forming portion 20, and a light source portion 30. As shown in FIG. The three-dimensional effect forming portion 20 is formed of a pattern 22 provided on the first surface of the pattern layer 20a.

The stereoscopic effect forming portion 20 is embodied as a pattern 22 arranged on one side of the light guide portion 10 having a predetermined width direction W0 between the first side and the second side. The pattern 22 is designed according to the shape or shape of the stereoscopic effect ray to be implemented. The pattern design refers to controlling or manufacturing the pitch or the width of the pattern or the arrangement direction of the pattern, the pattern extending structure (linear, curved, or a combination thereof) to a desired value or range.

In the present embodiment, the three-dimensional effect forming portion 20 includes a plurality of patterns arranged on different regions on one surface of the light guide portion 10. [ The two patterns adjacent to each other may have different arranging directions or different extending directions, and the pattern bending portion 24 may be positioned at a boundary between two adjacent patterns.

According to the present embodiment, the illumination device 100 irradiates incident light, which is irradiated from each of a plurality of LED packages, to different light paths (light emitting diodes) in each region through a pattern 22 arranged on different regions of the light guide portion 10 D1, and the like) (see Fig. 3).

6 is a partially enlarged cross-sectional view for explaining the principle of generating stereoscopic effect linear fluorescent light of the illumination device of FIG. In Fig. 6, only a part of the cross section of the pattern layer 20a is shown enlarged.

Referring to FIG. 6, incident light BL0 supplied from a specific light source LS of the light source unit is reflected by the light guide part (see reference numeral 10 in FIG. 1) and the refractive index of the pattern layer 20a, The light is guided in the laminated body of the light guide portion and the pattern layer 20a at a critical angle or less determined by the refractive index of the pattern layer 20a and moves from one side to the other side.

When the incident light BL0 meets the inclined surface 221 of the pattern unit of the three-dimensional effect forming unit 20, the incident light BL0 is refracted or reflected by the inclined surface 221, thereby having an internal angle of incidence larger than the critical angle, (Z direction) or the first surface direction (-z direction) to the outside of the laminated body.

In the case described above, the pattern unit of the three-dimensional effect forming unit 20 functions as indirect light sources that refract or reflect the incident light BL0 on the inclined surface 221 and emit incident light in the first surface direction or the second surface direction. Here, the indirect light sources formed by the respective pattern units appear to be located gradually farther from the reference point along the first path on the pattern when viewed from a predetermined reference point outside the illuminator. The reference point may be a point where a user, a camera or the like is located at a distance from the illuminating device in the second plane direction.

In other words, the pattern units are sequentially arranged in the pattern arrangement direction (x direction) with respect to the light source LS, and the first pattern unit (first pattern unit) When the second pattern unit P12 of the second area a2 and the third pattern unit P13 of the third area a3 are included in the second pattern unit P12, The second light path of the incident light is longer than the first light path from the light source LS to the first pattern unit P11 and smaller than the third light path from the light source LS to the third pattern unit P13.

That is, the second distance L2 from the second indirect light source LS2 to the second pattern unit P12 formed by the reflection and refraction of the second pattern unit P12 is equal to the second distance L2 from the first pattern unit P11 Formed by reflection and refraction of the third pattern unit P13 is longer than the first distance L1 from the first indirect light source LS1 formed by reflection and refraction to the first pattern unit P11, Is shorter than the third distance L3 from the indirect light source LS3 to the third pattern unit P13.

It is a depth sense that the linear fluorescent light enters inward from the second surface in the thickness direction of the light guide portion by the indirect light sources located gradually further from the reference point along the first path on the pattern as viewed from the reference point outside the illuminator ).

In other words, when the stereoscopic effect forming unit 20 is viewed from the side of the second surface, the linearly polarized light, which is guided by a specific width limited in the first path predetermined by the pattern design, It is possible to realize a light image having a depth feeling gradually entering the inside of the light guide portion on the opposite surface. The optical image may have a shape gradually decreasing in brightness along the first path.

As described above, the plurality of pattern units of the stereoscopic effect forming unit 20 are successively arranged along the first path of the linear fluorescent light when viewed from a predetermined external reference point, and indirectly arranged with the indirect light sources located gradually further from the reference point Whereby the three-dimensional effect forming unit 20 realizes a linear-shaped beam having three-dimensional effect on the first path, that is, a three-dimensional effect having a line-shaped beam.

On the other hand, in the above-described first through third pattern units P11, P12 and P13, the second pattern unit P12 includes a first pattern unit P11 in the pattern layer 20a when viewed from the light source LS side Or may be a pattern unit located between the first pattern unit P11 and a predetermined number of other pattern units. Similarly, the third pattern unit P13 may be a pattern unit positioned immediately after the second pattern unit P12 as viewed from the light source LS side, or a second pattern unit P12 and a predetermined number of other pattern units P12, The pattern unit may be a pattern unit positioned between the first and second substrates.

7 is a schematic cross-sectional view of a lighting apparatus according to another embodiment of the present invention.

7, the lighting apparatus 200 according to the present embodiment includes a light guide portion 10, a pattern layer 20a that forms a three-dimensional effect forming portion by a pattern, a light source portion 30, a reflective layer 40, And a diffusion inducing portion 50. The illumination device 200 may include a reflective pattern 120, an adhesive pattern 130, and a spaced-apart region 140 between the pattern layer 20a and the reflective layer 40. [ The lighting apparatus 200 includes a printed circuit board 31 on which the light source unit 30 is mounted, a support portion 160 such as a frame for supporting the printed circuit board 31, and a light source portion 30 And a power supply unit 180 for supplying power to the power supply unit 180.

In this embodiment, the light guide portion 10, the pattern layer 20a, the light source portion 30, and the reflective layer 40 are substantially the same as the corresponding constituent means of the illumination device described above with reference to Figs.

The diffusion inducing portion 50 includes an inclined hollow portion 52 provided on the base substrate and a light diffusion layer 51 on the inner wall of the hollow portion 52. The base substrate is arranged on the second surface of the light guide portion 10 and is made of a transparent material such as glass or resin.

The hollow portion 52 is arranged to direct the light emitted from the light source unit 30 or the hot spot light directly above the light source unit 30 embedded in the light guide unit 10. One end of the hollow portion 52 is aligned on the light source portion 30. The inner wall that passes through the base substrate and connects one end of the hollow portion 52 and the other end can be extended straight on a straight line inclined outwardly of the second surface on the second surface of the light guide portion 10.

The light diffusion layer 51 is arranged on the inner surface of the hollow portion 52. The light diffusion layer 51 may be provided by coating or coating the light diffusion material on the hollow portion 52. The light diffusion layer 51 may be formed of at least one selected from the group consisting of sillicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al ₂ O ₃ , The material may be implemented so as to be dispersedly disposed inside or on the surface of the base material. When the light-diffusing layer 51 includes a light diffusing material in the form of a bead, the particle diameter of the bead may range from about 1 m to about 20 m, but is not limited thereto.

In the present embodiment, the pattern layer 20a is disposed such that the pattern of the three-dimensional effect forming portion faces the reflective layer 40. [ This arrangement prevents the pattern covered by the resin layer from losing its inherent function (reflection and refraction function of incident light) when the resin is applied on the pattern layer 20a to form the light guide portion 10 do. That is, the pattern (see P11, P12, and P13 in Fig. 6) should function to refract and reflect the incident light on the inclined surface and guide the light to the outside of the illuminator. However, the resin layer having a refractive index similar to that of the pattern layer 20a When the pattern is covered, the inclined surface of the pattern substantially disappears and the pattern can not perform its function. However, in the present embodiment, the problem described above can be prevented by disposing the pattern layer 20a such that the pattern faces the reflective layer 40 without facing the light guide portion 10. [

The reflective pattern 120 is disposed on the reflective layer 40. The reflective pattern 120 is arranged between the reflective layer 40 and the pattern layer 20a. The reflection pattern 120 may be provided by printing an ink material containing the same material as the reflection layer 40 on the reflection layer 40. [ By using the reflection pattern 120, the reflection efficiency and the reflection area of the reflection layer 40 can be controlled.

When the pattern layer 20a and the reflective layer 40 are laminated, an adhesive pattern 130 may be used. In this case, the bonding pattern 130 may have a predetermined pattern (honeycomb, etc.) and be used to define the reflectance or the reflection area of the reflection layer 40. Such an adhesion pattern 130 may be integrally implemented by a reflection pattern 120 containing an adhesive material according to an implementation.

When the pattern layer 20a and the reflective layer 40 are laminated to each other, the illumination device 200 of the present embodiment is provided with the pattern layer 20a by the pattern of the pattern layer 20a and the adhesive pattern 130 therebetween. And the reflective layer 40, as shown in FIG. The spacing region 140 may be formed as an air layer or a vacuum layer. By using the spacing region 140, it is possible to induce fine scattering of the stereoscopic effect linear fluorescent light itself or its surrounding light, have.

In the illumination device 200 of the present embodiment, the light source unit 30 mounted on the printed circuit board 31 is disposed inside the light guide unit 10 through the opening of the reflection layer 40 and the opening of the pattern layer 20a. As shown in FIG.

The supporting part 160 may be provided to support not only the printed circuit board 31 on which the light source part 30 is mounted but also the light guide part 10, the reflective layer 40, and the like. The support portion 160 may be prepared from a metallic material such as stainless steel.

The power supply unit 180 is connected to the light source unit 30 to supply power to the light source unit 30. [ The power supply unit 180 may include a commercial power supply connected through wiring and a connector, but may be provided as a vehicle battery according to an implementation. When provided as a vehicle battery, the light source unit 30 may be connected to the vehicle battery and driven by the power source of the vehicle battery.

According to this embodiment, it is possible to provide a lighting device having flexibility, high heat resistance, excellent adhesion, high efficiency, and high reliability. In addition, it is possible to provide a lighting device capable of changing a light image by using a reflection pattern 80, an adhesive pattern 130, or a spacing region 140 in the realization of stereoscopic effect linear light by pattern design, The device can be effectively applied to various applications such as a vehicle instrument panel.

The diffusion inducing portion 50 may include a hollow portion 52 passing through the transparent base material and a light diffusing layer 51 arranged on the inner wall of the hollow portion 52 according to the implementation. In this case, the hollow portion 52 may have a curved shape whose inner wall is not linear. The light diffusing layer 51 may be a reflector arranged on the inner wall of the hollow portion 52, but is not limited thereto.

Further, when one end of the hollow portion 52 is aligned on the light source on the second surface of the light guide portion, the second cross-sectional area of the second opening at the other end opposite to the one end of the hollow portion 52, The second cross-sectional area of the second cross- Here, the second opening may have a second cross-sectional area corresponding to a region where planar light is to be formed. The first surface of the diffusion inducing portion 50 where the one end of the hollow portion 52 is positioned is a surface that is in contact with or adjacent to the second surface of the light guide portion and the second surface of the diffusion inducing portion 50 is a surface And may be a surface that is relatively far from the second surface of the light guide portion as the opposite surface of the surface.

According to the present embodiment, outgoing light or hotspot light flowing into one end of the hollow portion 52 located on the first surface of the diffusion inducing portion 50 is diffused and guided in the hollow portion 52, Plane light of a desired size or shape can be realized at the end portion. In other words, by using the light diffusion layer 51, various surface light source images can be realized by using the shape, thickness, material, and color of the light diffusion layer 51. Particularly, when the base substrate of the diffusion inducing portion 50 has a slight light guiding function, the emitted light passes through the light diffusion layer 51 of the inner wall of the hollow portion and is converted into the plane light diffusing and dispersed to a predetermined portion of the base substrate .

8 is an exemplary view of a modification of the diffusion inducing portion of the illumination device of FIG.

8, the illumination device according to the present embodiment includes a first reflector 51a surrounding a second side edge of a light guide portion and a diffusion inducing portion 50 having a second reflector 51b arranged in a plurality of pairs .

The diffusion inducing unit 50 includes a first pair of first reflectors 51a and a pair of first reflectors 51a and a pair of second reflectors 51b at one end of the second pair of reflectors 51b, And may be disposed integrally on the light source.

More specifically, the first reflector 51a and the second reflector 51b of the first pair include one end portion 51c and the other end portion 51d opposite to the one end portion 51c, When the first reflector 51a and the second reflector 51b have one end 51c and the other end 51e opposite to the one end 51c, one end of the first pair of reflectors and the second pair One end of the reflectors of the light source unit is integrally located on the light source of the light source unit. And the other end of the first pair of reflectors and the other end of the second pair of reflectors represent a plurality of plane lights. At this time, the plurality of planar light may be planar light that surrounds the linear light in the first region of the light guide portion in the form of a double band in the second region of the light guide portion, as in the illumination device of Fig.

9 is a cross-sectional view of a lighting apparatus according to another embodiment of the present invention. 10 is a partially enlarged cross-sectional view of a portion A1 of the diffusion inducing portion of the illumination device of Fig.

9, the illumination device according to the present embodiment includes a light guide portion 10, a pattern layer 20a, a light source portion 30, a printed circuit board 31, a pattern layer 40, diffusion inducing portions 50a, 50b, a reflective pattern 120, an adhesive pattern 130, and a spaced-apart region 140.

The constituent elements of the illumination device according to the present embodiment are substantially the same as the corresponding constituent means of the illuminator described above with reference to Fig. 7, except for the diffusion inducing portions 50a and 50b.

The diffusion inducing portions 50a and 50b according to the present embodiment include a light guiding portion 50a and a light diffusion portion 50b as shown in FIG.

The light guide portion 50a has a shape of a hollow pipe or a hollow plate. The light guiding portion 50a may have a structure in which the first plate 51 and the second plate 53 are disposed to face each other with a hollow portion 52 therebetween. The first plate 51 and the second plate 53 may correspond to the first reflector and the second reflector, respectively, on at least one surface thereof.

The first surface of the light guide portion 50a having one end of the hollow portion 50 is aligned on the second surface of the light guide portion directly above the light source portion so as to cover the light exit surface front side of the light source portion over the light guide portion.

The light diffusion portion 50b is coupled to the second surface of the light guide portion 50a. The other end of the hollow portion 52 is exposed on the second surface of the light guide portion 50a and the other end of the hollow portion is covered by the light diffusion portion 50b. The light diffusion portion 50b may be disposed as a plate-shaped member at a predetermined distance from the second surface of the light guide portion and has a width or length corresponding to the width or length of the flat light to be implemented.

The light diffusion unit 50b diffuses the light introduced into the light diffusion unit 50b through the light guide unit 50a. Material of the light diffusing section (50b) for this purpose can be of glass or resin, and silicon (sillicon), silica (silica), class bubbles (glass bubble), PMMA, PU (urethane), Zn, Zr, Al ₂ O ₃ , And acryl can be dispersed and disposed inside or on the surface of a base material (glass, resin, or the like). When the light diffusing portion 50b comprises a light diffusing material in the form of a bead, the particle size of the bead may range from about 1 [mu] m to about 20 [mu] m.

11 is a partial cross-sectional view of a lighting apparatus according to another embodiment of the present invention.

Referring to FIG. 11, the illumination device according to the present embodiment includes a light guide portion 10, a pattern layer 20a, a reflection layer 40, and a separation layer 80.

The illumination device according to the present embodiment is substantially the same as any one of the embodiments described above with reference to Figs. 1 to 10 except for the arrangement direction of the pattern layer 20a and the separation layer 80 . That is, the arrangement structure of the pattern layer 20a and the separation layer 80 described in this embodiment can be applied to any of the above-described embodiments.

The pattern layer 20a is filled with the pattern 22 of the three-dimensional effect forming portion 20 by the resin layer forming the light guide portion 10. In this case, if the refractive index difference between the pattern layer 20a and the resin layer is small, the reflection and refraction functions of the pattern 22 can be almost lost. In order to prevent this, a separation layer 80 is disposed between the pattern 22 of the pattern layer 20a and the light guide portion 10 in this embodiment.

In other words, when the difference between the refractive index of the light guide portion 10 and the refractive index difference of the pattern layer 20a is 0.2 or less, the inclined surface of the pattern 22 located therebetween does not properly perform refraction and reflection of the incident light. In such a case, incident light from the light source portion can not be guided to the outside of the illumination device in the pattern 22 of the three-dimensional effect forming portion 20, and it is difficult to realize the stereoscopic effect linear fluorescent light. Therefore, in the illumination apparatus according to the present embodiment, the separation layer 80 is provided between the pattern 22 and the light guide portion 10 to separate the light guide portion 10 formed from the resin layer and the pattern 22, So that reflection and refraction of the incident light can be performed smoothly on the inclined surface of the substrate 22.

The separation layer 80 may be a metallic coating layer disposed between the light guide portion 10 and the pattern layer 20a to prevent a difference in refractive index between the light guide portion 10 and the pattern layer 20a from becoming a predetermined value or less.

According to the present embodiment, it is possible to embed the pattern 22 of the three-dimensional effect forming portion 20 into the resin layer or to arrange it in the light guide portion made of the resin layer. That is, the pattern layer 20a is formed as the first resin layer, the separation layer 80 is formed, and then the light guide part 10 is formed as the second resin layer so that the pattern 22 is embedded in the light guide part It is possible to do.

12 is a partial sectional view of a light guide portion of a lighting apparatus according to another embodiment of the present invention.

12, the illumination device according to the present embodiment includes a laminated body of the light guide portion 10 and the pattern layer 20a of the embodiments described above with reference to FIGS. 1 to 11 as a single structure And a light guide portion 10a.

A pattern 22 is integrally provided on the first surface of the light guide portion 10a. The pattern 22 implements a stereoscopic effect forming part 20. [ The light guide portion 10a may be formed by cutting a part of the first face of the glass with a cutter to form the pattern 22. [

According to the present embodiment, the number of parts can be reduced, and the effect of simplifying the illumination device and reducing the cost can be obtained.

Figs. 13 to 15 are exemplary views of a pattern of a three-dimensional effect forming portion that can be employed in the lighting apparatus of this embodiment.

Referring to FIG. 13, the pattern 22 of the three-dimensional effect forming unit 20 according to the present embodiment has a pattern structure of a prism or a triangular cross-sectional shape. When the pattern 22 has a prism shape, the inclined surface 221 of the pattern 22 has a predetermined inclination angle with respect to the pattern arrangement surface extending in the x direction. That is, the inclined surface 221 may be designed to be inclined by a predetermined inclination angle? With respect to the direction orthogonal to the first surface 12 of the pattern layer or the light guide portion (z direction). The pattern layer in the laminated body of the light guide portion and the pattern layer with respect to the first surface 12 is simply referred to as a light guide portion.

The inclination angle? Of the inclined surface 221 may be about 5 degrees or more and about 85 degrees or less. The inclination angle? May be limited in consideration of the refractive index of the light guide portion, but basically has a range of about 5 to about 85 in consideration of the minimum and maximum angles capable of properly performing reflection and refraction at the inclined surface 221 .

As an example, when the refractive index of the light-guiding portion is in the range of about 1.30 to about 1.80, the inclination angle of the inclined surface 221 has a range of about 33.7 degrees to about 50.3 degrees in the reference direction (z direction or x direction) Greater than about 49.7 degrees and less than about 56.3 degrees.

Further, depending on the implementation, the light guide portion may be provided using a high refractive index material. For example, in the case of manufacturing a high light LED (Light Emitting Diode), when a light having a specific incident angle passes through a die and passes through a capsule material, a die (n = 2.50 to 3.50) and a conventional polymer capsule material (n = 1.40 to 1.60 (N = 1.80 to 2.50) is used to appropriately solve the problem. The refractive index of the high refractive index polymer (n = 1.80 to 2.50) is used for the total internal reflection. That is, in the present embodiment, when the light guide portion is provided by using the high refractive index polymer used for manufacturing the high-intensity LED, the inclination angle of the inclined surface 221 of the pattern 22 is greater than about 23.6 degrees and about 56.3 Lt; RTI ID = 0.0 > °. ≪ / RTI >

The inclination angle according to the above-described refractive index is in accordance with Snell's law, which can be expressed by the following equation (1).

In Equation 1, sin? ₁ may be an incident angle or a refraction angle of light in the first medium having the first refractive index n1, and sin? ₂ may be a refraction angle or an incident angle of light at the second refractive index n2.

As described above, in the light guide portion of the stereoscopic display apparatus of the present embodiment, the inclined surface of the pattern of the three-dimensional effect forming portion is inclined at an angle of inclination capable of appropriately reflecting or refracting incident light of about 5 deg. °.

Further, in the present embodiment, the pattern 22 can define the width (w) to the height (h) between adjacent pattern units at a predetermined ratio. The width w may be a constant pitch or pitch between two adjacent pattern units. For example, when the pattern is designed so that the depth of the linear fluorescent light is emphasized, the width w is set to be equal to or smaller than the height h. Also, when the pattern is designed so that a relatively long image is expressed in the linear fluorescent light, the width w may be set to be larger than the height h.

If the ratio (h / w) of the width to height of the pattern 22 is designed to be smaller than 1, the depth of the recesses is lower than that of the width (h / w) It can be easy.

The width w of the pattern 22 described above may be between about 10 탆 and about 500 탆. This width w may be an average spacing between two pattern units adjacent to each other in the x direction and may be adjusted according to the pattern design, the arrangement structure, or the desired optical image shape.

According to this embodiment, by designing the pattern 22 by using the width w and the height h of the pattern 22 as factors for controlling the characteristics, various optical images by the stereoscopic effect linear fluorescent light to be implemented can be efficiently It can be easily controlled.

Referring to Fig. 14, in the optical member of this embodiment, the pattern 22 of the three-dimensional effect forming portion 20 has a pattern structure of a polygonal cross-sectional shape. That is, the inclined surface 221 of the pattern 22 has a line graph shape.

The inclined surface 221 of the pattern 22 has a plurality of inclination angles? 1 and? 2 according to the thickness direction of the light guide portion or the number of line segments in the curve line in the direction (z direction) perpendicular to the first surface 12 of the light guide portion. Lt; / RTI > The second inclination angle [theta] 2 may be larger than the first inclination angle [theta] 1. The first or second inclination angles? 1,? 2 can be designed within a range of greater than about 5 ° and less than about 85 °.

The three-dimensional effect forming portion 20 of this embodiment may include a spacing portion 222 provided between two adjacent pattern units. For example, when the pattern 22 includes the first pattern unit Cm-1, the second pattern unit Cm, and the third pattern unit Cm + 1 (where m is a natural number of 2 or more) , The stereoscopic effect forming unit 20 is provided between the first pattern unit Cm-1 and the second pattern unit Cm and between the second pattern unit Cm and the third pattern unit Cm + 1 And may include a portion 222.

The width w1 of the spacing part 222 is smaller than the width w of the pattern 22. [ The width w1 of the spacing portion 222 can be designed to be less than several micrometers or less than about one fifth of the width w of the pattern for realizing natural linear light on the stereoscopic effect forming portion 20. [

In addition, the three-dimensional effect forming portion 20 of the present embodiment can have the cut surface 223 on the pattern 22 substantially parallel to the first surface 12 of the light guide portion. The cut surface 223 is a portion which does not act to cause light to be emitted to the outside due to reflection or refraction of incident light, and the linear fluorescence realized by the pattern 22 has a cut portion corresponding to the cut surface 223 The width w2 of the cut surface 223 can be appropriately designed to be several μm or less for realizing stereoscopic effect linear fluorescent light having a natural and continuous shape.

Referring to Fig. 15, in the stereoscopic displaying apparatus according to the present embodiment, the pattern 22 of the stereoscopic effect forming unit 20 has a lenticular, semicircular or semi-elliptical cross-sectional shape. The pattern 22 has an inclined surface 221 inclined at a predetermined angle in the thickness direction of the light guide portion or in a direction (z direction) perpendicular to the first surface 12 of the light guide portion. The pattern 22 may have a symmetrical shape with respect to the pattern center line (not shown) in the z direction.

The inclined surface 221 of the pattern 22 may have a structure in which the position on the inclined surface where the incident light BL0 meets due to the semicircular sectional structure changes according to the incident position of the incident light BL0. The tangent line 221 contacting the arbitrary point on the pattern 22 is perpendicular to the first surface 12 of the light guide portion 22 because the inclined surface 221 of the pattern 22 in this embodiment is a surface tangent to an arbitrary point on the arc. (Z direction) at a predetermined inclination angle [theta]. The inclination angle? May be larger than 0 ° and smaller than 90 ° depending on the position on the slope surface where the incident light BL0 strikes.

In the present embodiment, the pattern 22 of the three-dimensional effect forming portion 20 may further include a spacing portion 222 provided between two adjacent pattern units. The spacing portion 222 is a pattern-free portion between two adjacent pattern units of a concave shape on the first side 12 of the pattern layer or light-guiding portion as a portion of the first side 12, As shown in Fig. The spacing portion 222 may be omitted depending on the material of the light guide portion, the manufacturing process, or the pattern design as a clearance between the pattern units provided for convenience of pattern design and manufacturing process.

On the other hand, when the spacing portion 222 is disposed, the width w1 of the spacing portion 222 is designed to be smaller than the width w of the pattern unit of the pattern 22. The width w1 of the spacing portion 222 may be about 1/5 or less of the width w of the pattern 22 or may be several 탆 or less. If the width w1 of the spacing portion 222 is equal to or greater than the width w of the pattern 22, linear light having a cut-off portion in the pattern 22 can be realized.

Particularly, when the pattern 22 is of the lenticular form, the ratio (h / w) of the width w (or diameter) to the height of the pattern 22 for easy implementation of the linear fluorescent light is about 1/2 or less The inclination angle &thetas; of the inclined surface can be designed to be about 60 DEG or less.

However, the present invention is not limited to such a structure. Alternatively, the pattern may be formed by refracting or reflecting light proceeding inside the light guide portion, If it is a structure which emits in one plane direction or in a second plane direction, it is possible to apply any combination structure or any other structure in addition to the above-described sectional structure of a straight line, a curved line and a line graph shape.

16 is a schematic plan view for explaining a lighting apparatus according to another embodiment of the present invention.

16, the illumination device 300 according to the present embodiment includes a light guide portion for guiding incident light, a three-dimensional effect forming portion 20 disposed on a first surface of the light guide portion, And a diffusion inducing portion 50 disposed on the diffusion inducing portion.

The three-dimensional effect forming portion 20 has a pattern 22 disposed on different regions of the light guide portion 10 and extending integrally therewith, and the pattern 22 is formed in a direction for defining an optical path of linear light A plurality of pattern units sequentially arranged, each pattern unit having an inclined surface having an inclination angle with respect to the first surface.

The diffusion inducing portion 50 is arranged so as to cover the plurality of LED packages of the light source portion disposed at the edge of the pattern 22 so as not to be seen from the front surface.

When power is supplied to the light source unit, the LED package is shielded by the diffusion inducing unit 50 arranged on the upper side of the LED package, and the diffusion inducing unit 50 emits hot spot light by the LED package or emitted light from an undesired position And diffusing induces a planar light. Of course, in the center portion of the annular planar light, a plurality of stereoscopic effect linear fluorescent lights converted from the incident light of each LED package can be displayed (see Fig. 17).

On the other hand, when the illuminating device according to the present embodiment is used as a headlamp that is a lamp for a vehicle, the illuminating device 300 may be implemented to further include an outer lens 310. [ In this case, the outer lens 310 may be disposed to cover the light guide portion and the diffusion inducing portion 50, and may be provided integrally with the diffusion inducing portion 50 according to an embodiment.

Fig. 17 is an exemplary view showing an operating state of a comparative example for explaining the operation principle of the illuminating device of Fig. 16; Fig.

As shown in Fig. 17, in the illuminating device of the comparative example, each LED package has two or three LED elements, and outputs two or three incident light, and the incident light is converted into three- And displayed.

On the other hand, the lighting apparatus 300A of the comparative example does not include the diffusion inducing unit (refer to reference numeral 50 in Fig. 16), and hot spots of emitted light by the LED package are observed on the upper side of the LED package. The hot spot of the outgoing light can be converted into the plane light using the diffusion inducing unit of any of the embodiments of the present invention described above and displayed.

18 is an exemplary view of a lighting apparatus according to another embodiment of the present invention.

Referring to Fig. 18, the illumination device 300B according to the present embodiment implements the double ring-shaped planar light at the edge portion of the illumination device using the laminated structure of the three ring-shaped reflectors.

In addition, in the present embodiment, each LED package has two LED elements and outputs two incident light, and the incident light is converted into a stereoscopic effect linear fluorescent light by a pattern and displayed.

According to the present embodiment, an optical image having a plurality of surface light source bands can be implemented using a plurality of diffusion inducing portions or reflector shapes. In addition, the planar light can be divided into strips by adjusting the thickness, color, and material of the diffusion inducing unit or the reflector. In addition, a separate shielding band may be provided in a structure other than the three- It is possible to realize a planar light of one multi-band shape.

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.

10: Light guide portion
20: Stereoscopic effect forming part
20a: pattern layer
22: Pattern
221: slope
30: Light source
40: reflective layer
50:
80: separation layer

Claims (17)

A light guide part having a first surface and a second surface which is an opposite surface of the first surface and guiding incident light;
A three-dimensional effect forming unit having a pattern in or on the light guide unit;
A light source unit for supplying the incident light into the light guide unit; And
A diffusion inducing unit that diffuses outgoing light from the light source unit to the second surface to generate planar light covering the light source on the second area of the second surface;
/ RTI >
Wherein the pattern units are sequentially arranged and include a plurality of pattern units each having an inclined surface having an inclination angle with respect to the first surface or the second surface, wherein the plurality of pattern units are arranged in a direction in which the incident light is refracted and reflected on the inclined surface Into a linear path of a first path extending in a first plane direction toward the first plane or in a second plane direction toward the second plane and extending in a direction orthogonal to each pattern extending direction of the plurality of pattern units On the first area of the second surface. The method according to claim 1,
Wherein the second region surrounds at least a part of the first region and at least a part of the second region is located above the light source of the light source portion. The method according to claim 1,
Wherein the diffusion inducing portion includes a first reflector and a second reflector which are opposed to each other and are disposed with a spacing region therebetween. The method of claim 3,
Wherein the first reflector and the second reflector have one end disposed on the second surface and the other end extending obliquely outward on the second surface. The method of claim 4,
Wherein the first reflector and the second reflector have a hollow shape in which opposite side edges facing each other are connected to each other, and the other ends of the plurality of diffusion inducing portions each having the hollow shape are dispersed on a second region of the second surface Lighting device to be placed The method of claim 4,
And a diffusion member between the first reflector and the second reflector. The method of claim 4,
And a diffusing member disposed on the other end of the first reflector and the second reflector, wherein the diffusing member reflects light, which is emitted from the first reflector and the second reflector at the one end, To a plane of a predetermined width parallel to the plane of the substrate. The method of claim 4,
Wherein the diffusion inducing portion includes a plurality of pairs of the first reflector and the second reflector surrounding the second side edge of the light guide portion. The method of claim 8,
Wherein one end of the first reflector and the second reflector of the first pair and the one end of the first reflector and the second reflector of the second pair are disposed integrally on the light source of the light source unit. The method of claim 4,
Wherein the first reflector or the second reflector comprises aluminum (Al), silver (Ag), or a white pigment. The method according to claim 1,
Wherein the inclined surface is a specular surface or the surface roughness of the inclined surface is not more than 0.02 and not more than 0.30. The method of claim 11,
Wherein a repetition length or a pitch of the plurality of pattern units is from 10 mu m to 500 mu m. The method according to claim 1,
And a reflective layer on the first side of the pattern layer. The method according to claim 1,
Further comprising a separation layer between the pattern and the light guide portion,
Wherein the light guide portion is a resin layer, the stereoscopic effect forming portion is provided as a pattern layer joined to a first surface of the light guide portion, the pattern is provided on a first surface of the pattern layer, Wherein said separating layer is embedded and embedded in said resin layer. The method according to claim 1,
Wherein the light guide portion and the stereoscopic effect forming portion are provided as a single substrate, and the pattern is integrally formed by processing one surface of the single substrate. The method according to claim 1,
Wherein the pattern is formed in a different area and includes a first pattern for converting a first incident light from the first light source into a first linear light and a second pattern for converting a first incident light from the first light source into a second linear light, And the other first incident light is converted into another first linear fluorescent light and the traveling direction of the first linear fluorescent light and the traveling direction of the other first linear fluorescent light are different from each other. 18. The method of claim 16,
Wherein the light source unit is connected to a vehicle battery and is operated by a power source of the vehicle battery.

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