KR20150092654A - Lighting member and lighting device using same - Google Patents

Abstract

The present invention relates to a lighting member and a lighting device using the same, capable of implementing an optical image with a desired shape by controlling an optical path, an optical width, and luminous intensity through a pattern design. The lighting member includes a light guide unit which includes a first surface and a second surface which is opposite to the first surface and has a preset thickness between the first surface and the second surface, a stereoscopic effect forming unit which is formed on the second surface of the light guide unit, and a light absorption unit which is located on a first lateral surface between the first surface and the second surface. The stereoscopic effect forming unit includes a pattern which includes an inclined surface which is successively arranged on the second surface and has a tilt angle with regard to the second surface. The pattern generates the linear light of a first path which is orthogonal to each pattern extension direction of a plurality of unit patterns of the pattern by inducting incident light in a first surface direction which the first surface faces or a second surface direction which the second surface faces by refraction or reflection on the inclined surface. The light absorption unit absorbs the incident light of a second path which is different from the first path.

Description

TECHNICAL FIELD [0001] The present invention relates to a lighting member and a lighting apparatus using the lighting member.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination member capable of realizing an optical image of a desired shape by controlling a light path, a wide width, and a light intensity through pattern design, and a lighting apparatus using the same.

Generally, an illumination device is a device that brightens a dark place by using various light sources to illuminate the light. Lighting devices are used to illuminate a specific object or place and to express the atmosphere in a desired shape or color.

2. Description of the Related Art In recent years, various types of lighting devices using LEDs have become popular due to the development of LED (Light Emitting Diode) technology. For example, most LED lighting devices include an LED light source and a diffusion plate that diffuses the light emitted from the LED light source and emits uniform light to the outside through the entire light emitting surface.

Further, in order to express the atmosphere in a desired shape or color, some illumination devices of the prior art use a color filter or a filter having a projection port of a desired shape.

However, when an atmosphere is expressed in a desired shape or color by using a lighting apparatus of the prior art, the structure of the apparatus becomes complicated mechanically, thereby limiting the degree of design freedom in a desired shape, . As described above, there is a demand for an illumination member or a lighting device having a simple structure and being simple to install and operate in order to express an atmosphere or a light image by a desired color or shape of illumination.

According to an embodiment of the present invention, there is provided an illumination member capable of realizing various optical images by controlling a light path, a wide width, and a luminance change through pattern design, and a lighting apparatus using the same.

Another embodiment of the present invention provides an illumination member capable of improving contrast in various optical image implementations and a lighting apparatus using the same.

Another embodiment of the present invention is to provide a lighting member having flexibility and a flexibility in product design using a flexible printed circuit board and a resin layer, and a lighting apparatus using the lighting member.

Another embodiment of the present invention is to provide an illumination member having a simple structure capable of realizing various types of optical images having stereoscopic effect in various illumination fields such as general illumination, design illumination, vehicle illumination, and an apparatus using the illumination member.

According to an aspect of the present invention, there is provided an illumination member comprising: a light guide member having a first surface and a second surface opposite to the first surface and having a predetermined thickness between the first surface and the second surface; , A three-dimensional effect forming portion provided on the second surface of the light guide portion, and a light absorbing portion on the first side between the first surface and the second surface. Here, the three-dimensional effect forming portion includes a pattern having an inclined surface sequentially arranged on the second surface and having an inclination angle with respect to the second surface. A pattern is a pattern that is directed to a first surface direction toward a first surface or a second surface direction to which a second surface is directed by refraction or reflection at an inclined surface to form a first surface orthogonal to each pattern extending direction of a plurality of unit patterns of the pattern And generates linear fluorescence of the path. The light absorbing portion absorbs the incident light of the second path different from the first path.

An illumination device according to another aspect of the present invention includes the above-described illumination member and a light source portion that irradiates light within the illumination member.

According to an embodiment of the present invention, there is provided an illumination member and a lighting device that can control a light path, a wide width, and a light intensity through pattern design to generate linear light, and can realize an optical image of a desired shape using the linear light .

According to another embodiment of the present invention, unintentional incident light is prevented from being formed in a lighting member or a lighting apparatus using the lighting member, thereby enhancing the contrast, thereby realizing a bright optical image having a stereoscopic effect.

According to another embodiment of the present invention, a flexible printed circuit board and a resin layer are used to make the device thickness thin and to secure flexibility, so that it can be easily applied to various application products, and lighting Member and a lighting device can be provided.

According to another embodiment of the present invention, it is possible to realize an optical image of various shapes having a stereoscopic effect in various illumination fields such as general illumination, design illumination, and vehicle illumination, Can be provided.

1 is a perspective view of a lighting member according to an embodiment of the present invention;
Fig. 2 is a perspective view for explaining the operation principle of the lighting member of Fig.
3 is a perspective view showing an operating state of the illumination member according to a comparative example;
Figure 4 is a partial enlarged plan view of the illumination member of Figure 2;
Figure 5 is a partially enlarged cross-sectional view of the lighting member of Figure 2
6 is a plan view of a lighting member according to another embodiment of the present invention;
Fig. 7 is a partial enlarged cross-sectional view of the stereoscopic effect forming portion of the illumination member of Fig. 1
8 and 9 are partial enlarged cross-sectional views for explaining a pattern structure adoptable to the three-dimensional effect forming portion of the illumination member of Fig. 1
10 is a cross-sectional view of a lighting member according to another embodiment of the present invention
11 is a plan view of a lighting apparatus according to an embodiment of the present invention.
12 is a plan view for explaining the operation principle of the illumination device of FIG.
13 is a cross-sectional view of a lighting apparatus according to another embodiment of the present invention
14 is a cross-sectional view of a lighting device 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 member according to an embodiment of the present invention.

1, the illumination member 100 according to the present embodiment includes a light guide portion 10, a three-dimensional effect forming portion 20, and a light absorbing portion 30.

The light guide portion 10 has a first surface 11 and a plate or film shape comprising a second surface that is opposite to the first surface 11 and approximately parallel to the first surface. The light guide portion 10 may be formed of a transparent material such as glass or resin. The light transmittance of the transparent material may be at least about 50%, preferably at least about 80%. When the second surface is processed to provide the following pattern 22, the second surface is a virtual plane, and the actual surface of the light guide portion 10 corresponding to the second surface is a concave- And the like.

The thickness t1 of the light guide portion 10 is about 0.1 mm or more and about 10.0 mm or less. When the thickness t1 of the light guide portion 10 is less than 0.1 mm, it is difficult to manufacture the light emitting surface of the LED element smaller than about 100 탆 when the LED element is used as the light source, The durability may be lowered. If the thickness t1 of the light guide portion 10 is larger than 10.0 mm, the thickness and weight of the lighting member 100 increase, which makes it difficult to store, transport, and handle the light, leading to an increase in cost such as material cost.

The thickness t1 of the light guide portion 10 may be about 100 탆 or more and about 250 탆 or less. In this case, the light guide portion 10 may have a degree of flexibility enough to roll on a roll device or the like depending on the material. Also, depending on the implementation, the thickness t1 of the light guide portion 10 may be about 250 탆 or more and about 10.0 mm or less. In this case, the light guide portion 10 can be in the form of a plate because it is difficult to roll on the roll device.

The three-dimensional effect forming portion 20 includes a pattern 22 having an inclined surface 221. The three-dimensional effect forming unit 20 may include a pattern processing surface or a pattern arrangement surface on which a pattern 22 is formed by directly processing one surface of the light guide unit 10. [ In this embodiment, the pattern 22 is formed by directly processing the second surface of the light guide portion 10, but is not limited thereto.

The pattern 22 is a convex portion or a ditch or a ribbed portion whose longitudinal direction extends in the first direction (y direction) in the form of a mound or triangular column, and a concave portion extending in the first direction in the second direction And may have a stripe shape or stripe uneven shape arranged in order. Such a pattern shape includes, but is not limited to, a straight stripe shape in which a plurality of straight lines extend approximately parallel thereto, and may include a curved stripe shape.

The inclined surface 221 is formed in a direction (-z direction) in which the first surface 11 of the light guide portion 10 faces (-z direction) by refraction and reflection of light traveling in total reflection within the light guide portion 10, Direction (z direction). The inclined surface 221 defines the pattern of the three-dimensional effect forming portion 20 by limiting the incident light traveling in the second direction by totally reflecting between the second surface of the light guide portion 10 or the pattern arrangement surface and the first surface 11 22 so as to generate a certain wide linear fluorescent light.

The light absorbing portion 30 has two side surfaces (hereinafter, referred to as a first side surface or a pair of first side surfaces) substantially parallel to the xz plane between the first surface 11 and the second surface of the light guide portion 10, . In the present embodiment, the first aspect is described as being approximately parallel to the x-z plane, but is not limited thereto. The first side surface of the light guide portion 10 in which the light absorbing portion 30 is disposed may be a convex portion of the pattern 22 extending in the y direction or one end or both end surfaces of the concave portion.

The light absorbing part (30) moves inside the light guide part (10) and removes the incident light striking the first side surface. The light absorbing portion 30 absorbs light incident on the first side surface within the light guide portion 10, but may have little property of transmitting or reflecting light.

The light absorbing portion 30 may be formed by coating or printing a light shielding ink on the first side of the light guide portion 10 using a spraying method, a printing method, or the like. In addition, the light absorbing portion 30 may be provided by attaching an adhesive member having a light shielding layer to the first side surface of the light guide portion 10 according to the implementation.

The light absorbing portion 30 may be formed of a material in which the light absorbing material is dispersed in the inside or the surface. As the material of the light absorbing portion 30, a material including a dye of a black series, a transparent material absorbing visible light by a catalyst, and a light absorbing hollow fiber having a center portion of a fiber cross section may be used. As the material of the light absorbing portion 30, a dye including a chromophore, a powder of a carbon ingot, or the like may be used.

According to the present embodiment, it is possible to prevent the generation of unwanted incident light in the illumination member that implements the linear light having the three-dimensional effect by the design of the pattern 22. [ In addition, by preventing the generation of undesired incident light and enhancing the contrast performance between the list portion by the linear fluorescent light and the negative portion around the linear fluorescent light, it is possible to realize a clear optical image in the implementation of various optical images using the linear fluorescent light.

Fig. 2 is a perspective view for explaining the operation principle of the illumination member of Fig. 1;

2, when the incident light BL0 moves inside the light guide portion 10 of the illumination member 100, the solid effect forming portion 20 induces refraction and reflection of the incident light through the pattern 22 design And the linear light BL extending along the sequential arrangement direction of the pattern 22 is implemented by limiting the light path of the incident light to a specific path (first path). In this embodiment, the sequential arrangement direction may be the x-axis direction.

In the implementation of the linear fluorescent light (BL), each unit pattern of the pattern 22 functions as an indirect light source located gradually distantly along the first path. By the action of this pattern 22, (E.g., the second surface) side of the light guide portion 10 located relatively close to the reference point as the position of the indirect light source gradually decreases along the first path and the brightness gradually decreases, so that the light located relatively far from the reference point (For example, the first surface) side of the guide portion 10, as shown in Fig. Here, the reference point may be a point where a user, an observer, a camera, and the like are located. The unit patterns are sequentially arranged in the first direction (x direction) on the second surface of the light guide portion.

The stereoscopic effect described above is obtained when the linear fluorescent light BL generated by the pattern 22 of the stereoscopic effect forming portion 20 is directed in the thickness direction (-z direction) of the light guide portion 10, Refers to a mode of light emission entering the first surface 11 side of the light guide portion 10 through the inside of the light guide portion 10 on the second surface or the pattern arrangement surface.

According to the present embodiment, when the incident light BL0 is totally reflected on the first surface, the second surface, and the pair of first sides in the light guide portion 10 and moves toward the x direction side, Absorbing the light incident on the first side. The illumination member 100 can clearly realize linear light of a specific wide width having a three-dimensional effect in the x direction by the design of the pattern 22.

3 is a perspective view showing an operating state of the illumination member according to a comparative example.

Referring to FIG. 3, the illumination member 100R according to the comparative example generates main ambient light BLx traveling from the incident light BL0 to the x-direction side by total internal reflection at the first side of the light guide portion 10. Of course, the illumination member 100R of the comparative example can generate the stereoscopic effect linearly polarized light BL guided in the sequential arrangement direction (unit direction) of the unit patterns by the pattern 22 of the stereoscopic effect forming unit 20. [

The main ambient light BLx is incident on the light guide portion 10 as the incident light advances while totally reflecting between the pair of first side surfaces of the light guide portion 10 and when viewed from the predetermined thickness t1 of the light guide portion 10, Refers to a main light flow that passes through a region corresponding to the remaining thickness portion of the light guide portion 10 in which the pattern is not arranged except for the arranged thickness portion.

The main ambient light BLx forms an optical path other than the linear fluorescent light BL in the light guide portion 10 so that the optical image using the linear fluorescent light BL Thereby lowering the sharpness of the optical image of the linear fluorescent light (BL) having a stereoscopic effect.

The illumination member 100R according to this comparative example is different from the illumination member 100 of this embodiment shown in Fig. 2 in that the light absorbing portion 30 disposed on the first side surface of the light guide portion 10 is omitted And is substantially the same as the illumination member of this embodiment.

As described above, the illumination member 100 according to the present embodiment is different from the case of the comparative example in that a light absorbing portion is provided on the first side surface of the light guide portion provided with the three-dimensional effect forming portion, .

Hereinafter, the principle of generating linear fluorescence will be described in more detail with reference to FIGS. 4 to 6. FIG.

Fig. 4 is a partially enlarged plan view of the illumination member of Fig. 2;

4, in the illumination member 100 according to the present embodiment, by designing the pattern 22 extending in the y direction and sequentially arranged in the x direction on the second surface of the light guide portion 10, Most of the incident light (the first incident light) of the unit patterns LS follows the optical path of the first path orthogonal to the pattern extending directions y1, y2, y3, y4 of the unit patterns P1, P2, P3, (BL). In this embodiment, the first path corresponds to the x direction.

In the implementation of the linear fluorescent light BL, the unit patterns P1, P2, P3, and P4 disperse the remaining incident light (second incident light) in directions other than the first path by refraction and reflection at the respective inclined surfaces. Here, the second incident light is incident on the + x direction on the first path on the plane defined by the pattern extending directions (y1, y2, y3, y4) and the x direction axes of light directed from the light source LS to the inclined surface of the pattern (First oblique direction) between the + x direction and the + y direction and a direction (second oblique direction) between the + x direction and the -y direction. That is, the second incident light BLa, BLb, BLc, and BLd are refracted or scattered by a path different from the first path on the inclined plane (hereinafter referred to as ambient light) when they meet the sloped surfaces of the patterns P1 to P4, to be. In other words, since the second incident light BLa, BLb, BLc, BLd is dispersed in a relatively wide range within the light guide part 10, the relative position of the first incident light BLa, (BLa, BLb, BLc, BLd) forming a peripheral portion or a dark portion having a low luminance.

In this embodiment, the pattern extending directions y1 to y4 of the unit patterns P1 to P4 may be a direction in which a specific straight line extends on each slant face of the pattern, or a direction in which a specific tangent line tangent to a curved line on the slant face extends .

That is, when designing the pattern, if the pattern extending directions (y1, y2, y3, y4) are all designed to be parallel to each other, the optical path (first path) of the incident light passing through the pattern is a unit pattern P1 (Y1, y2, y3, y4) in the direction orthogonal to the pattern extending direction (y1, y2, y3, y4). This is because the movement of light is concentrated along the light path of the shortest time on the unit pattern according to Fermat's principle that the light traveling in the medium travels along the movement path of the shortest time.

Further, in the pattern design, the interval Lp between two unit patterns adjacent to each other may be about 10 占 퐉 to about 500 占 퐉. This interval Lp may correspond to the pitch of the pattern or the average interval. This interval (Lp) takes into consideration the minimum interval and the maximum interval for the implementation of the linear fluorescence having a stereoscopic effect. If it is out of this range, it is difficult to realize the indirect light sources which are arranged substantially continuously continuously on the optical path, The implementation of a variety of optical images may be limited.

On the other hand, if the pattern is designed so that the pattern extension directions are not parallel to each other and extend at least at one point or extend in the radial direction according to the implementation, the light path of the incident light passing through the pattern according to the Fermat principle starts from the pattern The distance (or gap) between two adjacent patterns may be curved toward the narrow side (see FIG. 6).

As described above, in the illumination member of the present embodiment, the linear light generated by refraction and reflection in the pattern is limited to a predetermined width and a predetermined length through pattern design for controlling the structure, shape, optical image, . For example, the particular light path and specific light width of the incident light may be implemented to extend by a second width less than the first length, with a width that is either a constant width and a width that is implemented or progressively narrowed by a first length, depending on the design of the pattern width Or may have a width that gradually widens and is similar to the first length or shorter than or longer than the first length.

Fig. 5 is a partially enlarged cross-sectional view of the illumination member of Fig. 2; Fig. 5 corresponds to the case where the second surface of the light guide portion in which the patterns are arranged is located on the upper side of the figure, and the first surface of the light guide portion is located on the lower side of the figure.

5, incident light BL0 traveling from the light source LS and traveling inside the light guide unit 10 is incident on the light guide unit 10 determined by the refractive index of the light guide unit 10 and the refractive index of the external atmosphere, Is reflected between the first surface (11) of the light guide portion (10) and the pattern arrangement surface within the range of incident angles below the critical angle of the surface boundary of the light guide portion (11). When the incident light BL0 meets the pattern 22, the incident light BL0 is refracted and reflected by the inclined surface of the pattern 22 and thereby travels in the first surface direction or the second surface direction, As shown in FIG.

In the above-described case, the pattern 22 of the light guide portion 10 operates as indirect light sources that refract or reflect the incident light through the inclined surfaces of the unit patterns and emit incident light in the first surface direction or the second surface direction. That is, the unit patterns of the pattern 22 are arranged such that as the distance from the light source LS becomes longer as viewed from a predetermined reference point outside the light guide unit 10, the unit patterns of the dummy light sources LS1 , LS2, and LS3, respectively.

For example, the first unit pattern P1 of the first area A1, the second unit pattern P2 of the second area A2 among the patterns 22 sequentially arranged in one direction on the basis of the light source LS, And the third unit pattern P3 of the third area A3 in the first unit pattern P3 is a light source LS which is a moving distance of the incident light BL0 arriving at the second unit pattern P2 from the light source LS The second optical path from the light source LS to the third unit pattern P3 is longer than the first optical path from the light source LS to the first unit pattern P1, 3 is smaller than the optical path. That is, the second distance L2 from the second dummy light source LS2 to the second unit pattern P2 generated by the second unit pattern P2 is equal to the second distance L2 from the first dummy light source LS1 of the light source LS, Is shorter than the first distance L1 from the first unit pattern P1 to the third unit pattern P3 and shorter than the third distance L3 from the third dummy light source LS3 to the third unit pattern P3 of the light source LS. Here, the first distance L1, the second distance L2 and the third distance L3 correspond to the light path from the light source LS to each unit pattern P1, P2, and P3.

As such, the pattern 22 has a line-shaped beam having a three-dimensional effect (hereinafter referred to as " three-dimensional effect ") in which the dummy light sources on the first path are progressively farther on the first path, ).

The above-mentioned stereoscopic effect linear fluorescent light is emitted from the first surface of the light guide portion 10, which is defined by an optical path (first path) predetermined by the pattern design when viewed from the first surface direction or the second surface direction, May refer to a light image having a depth sense that progressively enters the light guide portion 10 toward the second surface (or vice versa). In addition, the stereoscopic effect ray fluorescent or stereoscopic effect light may be a name of a specific type of optical image of linear fluorescent light as an example of linear fluorescent light.

On the other hand, in the first through third unit patterns P1, P2, and P3 of the above-described pattern, the second unit pattern P2 is formed on the second surface of the light guide portion 10, Or may be a pattern located immediately after the first unit pattern P1 or between the first unit pattern P1 and a predetermined number of other unit patterns. Similarly, the third unit pattern P3 may be a pattern positioned immediately after the second unit pattern P2 as viewed from the light source side, or may include a second unit pattern P2 and a predetermined number of other unit patterns, Pattern.

6 is a plan view of a lighting member according to another embodiment of the present invention.

Referring to FIG. 6, the illumination member 100A according to the present embodiment includes a plurality of unit patterns provided on a second surface of the light guide unit 10, the pattern arrangement directions of which intersect with each other. The plurality of unit patterns may include a first unit pattern C1, a second unit pattern C2, a third unit pattern C3, an n-2 unit pattern Cn-2, an n-th unit pattern Cn- -1 unit pattern Cn-1 and an n-th unit pattern Cn. Here, n is a natural number of 6 or more.

In this embodiment, the plurality of unit patterns extend in directions not parallel to each other. That is, the virtual extension lines of the pattern extension directions of the plurality of unit patterns can meet with each other at one intersection (C).

When the incident light passes through the three-dimensional effect forming portion 20, the plurality of unit patterns are arranged such that the side where the pattern extending directions intersect each other, that is, the interval between adjacent unit patterns is narrow, And the linearly polarized light BL1 of the first path is bent.

On the other hand, in the illumination member 100A of the present embodiment, an observer (user, camera, or the like) observing the linear beam BL1 of the first path moves at a predetermined reference point in the first surface direction or the second surface direction When the reference point is changed from the first point Pa to the second point Pb, the plurality of unit patterns implement the linear fluorescent light BL2 moving along the different optical path instead of the first path. This is because the position on the unit patterns orthogonal to the line of sight (vector component by height and direction) at the second point Pb moves in the direction opposite to the movement direction of the reference point according to the change of the reference point for viewing the linear fluorescent light.

According to the present embodiment, not only a desired optical image such as a straight line or a curved line can be realized as a clear stereoscopic effect linear fluorescent light through pattern design, but also various optical images (straight line, Curves, or combinations of these, etc.).

Although not shown in the drawing, the optical image expressed by different optical paths in accordance with the movement of the reference point can be implemented in a pattern structure having a pattern extending direction parallel to each other like the unit patterns P1 to P4 in FIG. Of course.

7 is a partially enlarged sectional view of a stereoscopic effect forming portion of the illumination member of Fig.

Referring to FIG. 7, the pattern 22 of the three-dimensional effect forming portion 20 according to the present embodiment has a pattern structure of a triangular cross-sectional shape. If the pattern 22 has a triangular sectional structure, the inclined surface 221 formed on the triangular sectional structure has a predetermined inclination angle with respect to the x direction. In other words, the inclined surface 221 can be designed to be inclined at a predetermined inclination angle? With respect to the direction (z direction) orthogonal to the first surface or the second surface 12 of the 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 may have a range of from about 5 to about 85 considering basically the minimum and maximum angles of 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 or the stereoscopic effect forming portion 20 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 pattern 22 is provided by utilizing the high refractive index polymer used for manufacturing a high-intensity LED, the inclination angle of the inclined surface 221 of the pattern 22 is greater than about 23.6 degrees And may have a range of less than about 56.3 degrees.

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 illumination member of the present embodiment, the inclined surface of the pattern constituting the three-dimensional effect forming portion is an inclination angle capable of appropriately reflecting or refracting the incident light, such as about 5 deg. .

Further, in the present embodiment, the pattern 22 may define the width (w) to the height (h) between adjacent unit patterns at a predetermined ratio for convenience of the manufacturing process or the like. The width w may be a constant interval between adjacent two unit patterns, that is, a pitch. For example, when the pattern of the illumination member is designed such 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.

The width w of the pattern 22 described above may be between about 10 탆 and about 500 탆. The width w may be an average spacing between two unit patterns 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.

On the other hand, when the pattern 22 has a lenticular shape, the ratio (h / w) of the width w (or diameter) to the height of the pattern 22 for implementing the linear fluorescent light is about 1/2 Or the inclination angle [theta] of the inclined surface may be designed to be about 60 DEG or less.

If the ratio (h / w) of the width to height of the pattern 22 is designed to be smaller than 1, the depth (h / w) of the width 22 of the pattern 22 is 1 or more, It may be easy to manufacture.

According to this embodiment, by designing the optical member by using the width (w) and the height (h) of the pattern 22 as factors for controlling the characteristics, it is possible to efficiently and easily perform various optical images by the three- Can be controlled.

8 and 9 are partially enlarged cross-sectional views for explaining a pattern structure adoptable in the three-dimensional effect forming portion of the illumination member of Fig.

Referring to Fig. 8, in the illumination member of this embodiment, the pattern 22 of the three-dimensional effect forming portion 20 has a semi-circular cross section, a semi-elliptical cross section, or a lenticular 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) orthogonal to the second surface 12 which is the opposite surface of the first surface 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 varies with the position of the incident light BL0. That is, since the inclined surface 221 of the pattern 22 according to the present embodiment is a surface tangent to an arbitrary point on the arc, the tangent line contacting the arbitrary point on the pattern 22 is perpendicular to the second surface 12 of the light guide portion (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 semicircular cross section where the incident light BL0 strikes.

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

The spacing portion 222 may be a portion of the second surface 12 that is located between two adjacent unit patterns as a portion where the concave unit pattern is not formed on the second surface 12 of the light guide portion. In addition, the spacing part 222 may be provided as a clearance between two unit patterns adjacent to each other for convenience of the manufacturing process. The spacing portion 222 may be omitted depending on the pattern design.

The width w1 of the spacing portion 222 is designed to be smaller than the width w of the unit pattern 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 greater than the width w of the pattern 22, it may be difficult to realize natural linear light in the pattern 22. [

Referring to Fig. 9, in the illumination member of the present embodiment, the pattern 20 of the three-dimensional effect formation portion 20 has a pattern structure of a polygonal cross-sectional shape. The inclined surface 221 of the pattern 22 has a shape of a bent line graph.

The inclined surface 221 of the pattern 22 has a plurality of inclination angles? 1 and? 2 along the thickness direction of the light guide portion or in the direction (z direction) perpendicular to the second 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 and second inclination angles? 1 and? 2 can be designed within a range of greater than about 5 ° and less than about 85 °, depending on the position at which the incident light BL0 meets.

In addition, the three-dimensional effect forming unit 20 of the present embodiment may include a separation unit 222 provided between two adjacent unit patterns. The width w1 of the spacing portion 222 is smaller than the width w of the pattern for realizing natural linear light on the stereoscopic effect forming portion 20. [ The width w1 of the spacing part 222 can be designed to be several μm or less or about 1/5 or less of the width w of the pattern.

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 or second 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 disconnecting surface 223 can be appropriately designed to be several μm or less for a linear shape light beam of a continuous shape. On the other hand, in the case of continuous linear fluorescent light, the disconnection surface 223 may be omitted, but it is needless to say that the disconnection surface 223 can be used in the case of discontinuous linear fluorescent light.

10 is a cross-sectional view of a lighting member according to another embodiment of the present invention.

10, the illumination member 200 according to the present embodiment includes a light guide portion 10, a three-dimensional effect formation portion 20, a light absorption portion 30, a support portion 40, and a reflection portion 42, .

The light guide portion 10 may be provided as a resin layer. The light guide portion 10 embeds the three-dimensional effect forming portion 20 on the reflecting portion 42. In this case, the lighting member 200 may have flexibility to bend at a predetermined curvature through the support 40 provided with a flexible printed circuit board and a resin layer provided with a predetermined thickness.

The stereoscopic effect forming portion 20 is provided with a separate transparent pattern layer 20a bonded to the first surface of the light guide portion 10. [ The pattern layer 20a has a pattern 22 on one side.

The light absorbing portion 30 is disposed on the first side surface of the light guide portion 10. The light absorbing portion 30 may extend from the light guide portion 10 to the reflecting portion 42 so as to surround the pattern layer 20a. 10, the light absorbing portions 30 are disposed on the first side in the direction (y direction) perpendicular to the arrangement direction (x direction) of the pattern 22, And it can be seen that it extends a little from the first side face of the light guide portion 10 to the side edge (second side face) in the x direction. The light absorbing portion 30 may be formed by forming a liquid material including a light absorbing material on the first side surface of the light guide portion 10 by a spraying process, an immersion process, a printing process, or the like.

The support 40 includes a rigid or flexible support member or housing. The support 40 may be a rigid printed circuit board or a flexible printed circuit board.

The reflecting portion 42 may be a reflecting film or a reflecting layer provided on the supporting portion 40. The reflective portion 42 reflects light emitted from the light guide portion 10 through the pattern layer 20a and sends the light back to the pattern layer 20a. The reflection pattern 140 may be provided on the reflection portion 42 for the reflection efficiency of the reflection portion 42 and the control of the reflection region.

The reflection pattern 140 may be provided as an ink pattern on one surface of the reflective portion 42 facing the pattern layer 20a. As the material of the reflection pattern 140, the same material as that of the reflection portion 42 may be used. When the reflection pattern 140 is used, the intensity of light reflected on the reflection portion 42 can be adjusted, thereby contributing to the realization of optical images of various shapes.

In the three-dimensional effect forming portion 20 of the present embodiment, the pattern 22 is disposed so as to face the reflecting portion 42. In this case, when the resin layer is coated on the pattern layer 20a to form the optical guide layer 10, the pattern 22 covered by the resin layer is prevented from losing its inherent function. That is, the pattern 22 guides the incident light traveling in the light guide portion 10 toward the second surface 12 of the light guide portion 10 while guiding the incident light to the light guide portion 10 by the refraction and reflection on the inclined surface, The inclined plane may disappear and the function may not be performed. However, in this embodiment, the pattern arrangement surface may be a reflecting portion 42 on the opposite side of the light guide portion 10 The occurrence of the above-described problem can be prevented by disposing the pattern layer 20a so as to face the pattern layer 20a.

The pattern layer 20a can be fixed on the reflective portion 42 by the adhesive pattern layer 130. [ The adhesion pattern layer 130 may have a predetermined pattern (honeycomb shape or the like) and may be used to define the reflectance or the reflection area of the reflection portion 42. When the pattern layer 20a can be supported or fixed by bonding or adhering the resin layer on the reflective portion 42 with respect to the adhesive function of the adhesive pattern layer 130, The adhesive function can be omitted. The adhesive pattern layer 130 may be provided integrally with the reflective pattern 140 containing an adhesive material according to an implementation.

On the other hand, the pattern layer 20a is not fixed by the adhesive pattern layer 130 and can be embedded in the middle of the resin layer according to the implementation. According to this structure, the pattern layer 20a can be disposed and placed between the reflective portion 42 and the resin layer.

The pattern layer 20a is provided on the first surface 10 of the light guide portion 10 while serving as a resin layer while the pattern layer 20a is provided between the light guide portion 10 (See reference numeral 22 in FIG. 1) that directly processes the first surface 10 of the light guide portion 10 and a pattern layer (not shown in FIG. 1) that is bonded on the first surface 11 As shown in FIG.

Also, depending on the implementation, a spacing region 120 may be provided between the pattern layer 20a and the reflective portion 42. [ The spacing region 120 may be an air layer or a vacuum layer.

The present embodiment is not only capable of realizing a flexible lighting member but also capable of realizing the stereoscopic effect by the pattern 22 in the flexible lighting member in the spacing region 120, the adhesive pattern layer 130, the reflection pattern 140, Or a combination thereof, it is possible to realize more various optical images by controlling the performance or the area for reflection, scattering, or dispersion of light.

In addition, the above-described illumination member can be implemented as an illumination device that combines with various light sources (halogen lamp, LED lamp) to generate stereoscopic effect linear fluorescent light. For convenience of explanation, the following description will focus on the case where an LED light source is used as a light source, but the present invention is not limited thereto.

11 is a plan view of a lighting apparatus according to an embodiment of the present invention. 12 is a plan view for explaining the operation principle of the illumination device of FIG.

Referring to FIG. 11, the illumination device 300 according to the present embodiment includes a light guide portion 10, a three-dimensional effect forming portion 20, a light absorbing portion 30, and a light source portion 50. The light source part 50 may be embedded on the support part together with the three-dimensional effect forming part 20 by the light guide part 10 provided as a resin layer.

The three-dimensional effect forming portion 20 includes a pattern 22 disposed on one surface of the light guide portion 10 having a predetermined widthwise length L. The three-dimensional effect forming portion 20 includes a plurality of patterns arranged in 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 21 may be formed at the boundary between two adjacent patterns.

When the three-dimensional effect forming portion 20 includes the first pattern and the second pattern provided in different regions of the light guide portion 10, the first sequential arrangement direction of the first pattern and the second sequential arrangement of the second pattern The directions can be arranged to be opposite to each other or to intersect with each other.

The light absorbing portion 30 is disposed on the first side surface of the light guide portion 10 and absorbs incident light coming from the first side surface to thereby be reflected from the first side surface to block an incident light flow of the undesired light path.

The illumination device 300 irradiates the incident light, which is respectively irradiated from the plurality of light sources, to the light guide unit 10 through the patterns 22 of the stereoscopic effect forming unit 20 arranged in different regions of the light guide unit 10, . Each light source of the light source unit 50 may be an LED package that includes two LED devices as an LED (Light Emitting Diode) light source and emits two lights.

The illumination device 300 generates linear beams Beam extending in different optical paths D1 in the respective regions of the light guide portion 10 as shown in Fig. The two lines of light emitted from each of the twelve LED light sources of the light source unit 50 progressively travel from the respective LED light sources in the width direction of the predetermined length L of the light guide unit 10 by the pattern 22, And is converted into a light image disappearing in the widthwise intermediate portion A0 of the light guide portion 10. [

That is, the illumination device 300 is configured such that light emitted from the twelve light sources of the light source unit 50 is emitted from the light source unit 50 at a specific width, So as to realize a linear light having a depth in the thickness direction of the light guide part 10.

Here, the depth sense of the linear fluorescent light is such that when the linear fluorescent light is extended from the root of the light source to the distal end of the middle area A0 of the light guide part 10, And the end portion is positioned near the first surface of the light guiding portion 10, which is located on the opposite side of the second surface, so that the linear light can be inclined from the second surface of the light guiding portion 10 toward the first surface .

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

13, a lighting apparatus 400 according to the present embodiment includes a light guide portion 10, a three-dimensional effect forming portion 20, a light absorbing portion 30, a supporting portion 40, a reflecting portion 42, A separating unit 44, a light source unit 50, and a multi-effect forming unit 60. The light source part 50 may be embedded on the support part 40 together with the three-dimensional effect forming part 20 by the light guide part 10 provided as a resin layer.

The illumination device 400 of the present embodiment is configured such that the pattern 22 of the stereoscopic effect forming portion 20 faces the light guide portion 10 and the shape of the coating layer 10 and the multi-effect forming portion 60 are arranged, as shown in Fig. 10, except that the separating portion 44 of the lighting member 200 is provided.

When the pattern layer 20a is laminated on the reflective portion 42, the pattern layer 20a is disposed such that the other face opposite to the one face thereof lies on the reflective portion 42. [ When the light guide portion 10 is formed of resin on the pattern layer 20a, the pattern 22a of the pattern layer 20a is formed in order to prevent the function of the pattern 22 from being lost due to the small refractive index difference therebetween. The light guide part 10 may be formed on the upper part of the separating part 44 after the predetermined part of the material is thinly coated. The separating portion 44 is provided to clarify the boundary between the pattern 22 of the pattern layer 20a and the light guide portion 10. The separating portion 44 is formed of a metal material such as silver (Ag), aluminum (Al), stainless steel, Deposited on the substrate. The separating portion 44 may be made of the same or similar material as the reflecting portion 42.

In other words, when the pattern 22 of the three-dimensional effect forming portion 20 is laminated so as to face the resin layer, the inclined face of the pattern 22 due to the resin layer forming the light guide portion 10, You may not be able to do it. Particularly, when the refractive index of the light guide portion 10 is similar to that of the pattern layer 20a, for example, when the refractive index difference is 0.2 or less, the inclined surface of the pattern 22 located therebetween is not properly reflected I can not do it. The incident light of the light source section 50 can not be guided to the upper side of the light guide section 10 by the refraction and reflection in the pattern 22 of the three-dimensional effect forming section 20, You may not be able to implement it.

Therefore, in the illumination device 400 according to the present embodiment, the separation portion 44 is provided between the pattern 22 and the light guide portion 10 to clearly separate the pattern 22 and the light guide portion 10, So that reflection and refraction of the incident light can be smoothly performed on the inclined surface of the light guide plate 22.

Unlike the light absorbing portion of the illuminating member 200 of Fig. 10, the light absorbing portion 30 is a member having a bracket type member having a light absorbing function at least at one side of the illuminating device including the first side of the light guiding portion 10. [ As shown in FIG. In this case, the light absorbing portion 30 may be formed as a rigid member having a light absorbing function, or may be formed by coating a light absorbing material on a rigid member such as a metal or plastic.

The reflective portion 42 is disposed between the support member 40 and the first pattern layer 20a. The reflective portion 42 may be provided in a film form on one side of the support portion 40. The reflector 42 is formed of a material having a high reflection efficiency so that the light emitted from the light source unit 50 toward the first surface of the light guide unit 10 via the pattern 22 of the three- And reflects it back. According to such a reflection portion 42, the light loss of the illumination device 400 can be reduced, and the linear light having a stereoscopic effect can be expressed more clearly.

As the material of the reflecting portion 42, a synthetic resin containing dispersed white pigment may be used in order to increase the reflection characteristic of light and the characteristic of promoting dispersion of light. Examples of the white pigment include titanium oxide, aluminum oxide, zinc oxide, carbonate, barium sulfate, and calcium carbonate. The synthetic resin raw materials include polyethylene terephthalate, polyethylene naphthalate, acrylic, polycarbonate, polystyrene, Polyolefin, cellulose acetate, weather-resistant vinyl chloride, and the like may be used, but the present invention is not limited thereto. In another embodiment, the reflective portion 42 may be embodied as silver (Ag), aluminum (Al), stainless steel (304SS), or the like.

The light source of the light source unit 50 is connected to the support unit 40 through the pattern layer 20a and the reflection unit 42 when viewed in section. When the supporting part 40 is a flexible printed circuit board, the light source part 50 may be driven to emit light from the light source by a power supply and a control signal supplied through the flexible printed circuit board.

The multi-effect forming part 60 includes an optical pattern provided on the light guide part 60. The optical pattern may have an extending direction orthogonal to the extending direction of the pattern 22 of the three-dimensional effect forming portion 20. [ The optical pattern may have a triangular cross-sectional shape or a prism shape, whereby a single linear fluorescent light emitted in the direction of the first surface or the second surface of the light guide portion 10 is divided into two linear fluorescent lights (BL2, BL3). The multi-effect forming part 60 may be formed by directly processing the first surface of the light guide part 10 in the form of a concavo-convex pattern or by bonding separate pattern layers.

The thickness t2 of the illumination device 400 may be about 100 탆 to about 250 탆. If the thickness of the illumination device 400 is less than 100 占 퐉, it is difficult to realize a structure for embedding the LED light source into the resin layer and the durability may be deteriorated. Further, if the thickness of the illumination device 500 is greater than 250 μm, it is difficult to roll the roll due to the thick thickness, which increases the cost of handling, transportation, storage and installation, Uneasy.

According to the present embodiment, the illumination device 400 includes the reflective portion 42, the pattern layer 20a, the separation layer 44, and the light source portion 40 on the support portion 40 by the light guide portion 10 provided as a resin layer. The light source of the light source unit 50 irradiated in the light guide unit 10 is reflected and refracted by the pattern 22 of the solid effect forming unit 20, It can be converted into fluorescence and displayed. Here, the illumination device 400 can increase the contrast of the linear fluorescent light by the light extracting unit 340. [

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

14, the illumination device 500 according to the present embodiment includes a light guide portion 10, a three-dimensional effect forming portion 20, a light absorbing portion 30, a light source portion 50, and an outer lens , 510). In addition, the illumination device 500 may further include a multiple effect formation unit 60. [

The light guide portion 10 may be substantially the same as the light guide portion of the illumination device of the above-described embodiment, except that the shape of the light guide portion 10 in the plan view is streamlined and has a curvature at a predetermined portion in the thickness direction.

The stereoscopic effect forming unit 20 includes a plurality of patterns 22 provided in different areas of the second surface of the light guide unit 10. [ The plurality of patterns 22 are provided in different regions of the streamlined light guide portion 10 to generate linear light of different light paths. The plurality of patterns 22 may be embodied as a concavo-convex pattern provided on the second surface of the light guide portion 10 and having an inclined surface inclined with respect to the second surface. The stereoscopic effect forming portion 20 may be substantially the same as the stereoscopic effect forming portion of Fig. 11 except that it has a plurality of patterns 22 arranged in different regions of the streamlined light guide portion 10. [

The light absorbing portion 30 is disposed along the edge of the streamlined light guide portion 10. The light absorbing portion 30 may have an opening portion 32 corresponding to the light emitting surface of the light source. The opening portion 32 is a portion where the light absorbing portion 30 itself or the light absorbing material is not disposed and the light emitted from the LED light source passes through the light absorbing portion 30 to form the pattern 22 .

Although not shown in the drawing, the lighting apparatus of this embodiment can include the supporting portion or the reflecting portion of Fig. 10 or Fig.

The light source part 50 is arranged on the edge of one side in accordance with the streamlined shape of the light guide part 10. The light source unit 50 may include a plurality of LED light sources. The light source unit 50 may be substantially the same as the light source unit of Fig. 13 except that it is disposed outside the stereoscopic effect forming unit 20. Fig.

The multi-effect forming portion 60 includes a plurality of optical patterns provided in different areas of the first surface, which is the opposite side of the second surface of the light guide portion 10. The plurality of optical patterns separate the single-ray fluorescent light to generate the plurality of linear fluorescent light (BL2, BL3). The multiple effect forming portion 60 may be substantially the same as the multiple effect forming portion of FIG.

The outer lens 510 refers to a lens-shaped cover which is disposed on the outer surface of the illuminating device in a vehicle lighting device (headlight, rear light, etc.), an outdoor lighting device and the like. The outer lens 510 may be formed of a transparent plastic material such as an engineering plastic. At this time, the outer lens 510 may have a light transmittance or transparency of a predetermined level or higher from the outside.

When used as a vehicle, the outer lens 510 may be provided on one surface of the light guide unit 10 so as to have a curvature following the curved surface of the vehicle body. Further, when the illumination device 500 is used as vehicle illumination, the light source of the light source unit 50 can be operated by receiving power from the vehicle battery 520. [

The light guide portion 10, the three-dimensional effect forming portion 20, the light absorbing portion 30, the multiple effect forming portion 60, and the light source portion 50 are disposed on one surface of the outer lens 510. The light guide portion 10 may be bonded to one surface of the outer lens 510 or may be disposed at a predetermined distance. The light source unit 50 may be embedded in the light guide unit 10 on one side of the outer lens 510, but the present invention is not limited thereto.

According to the present embodiment, the pattern design of the three-dimensional effect forming portion can be applied to a vehicle lighting device such as a headlight, a rear light, a vehicle interior light, a fog light, a door scarf, etc., . That is, according to the present embodiment, a new lighting device advantageous from the viewpoints of volume, thickness, weight, price, lifetime, stability, freedom of design, and ease of installation can be provided as compared with the existing vehicle lamp.

On the other hand, the lighting apparatus of the present embodiment is not limited to a vehicle lighting apparatus, and can be easily applied to inner and outer curved surfaces and curved portions of a building, a facility, furniture, In this case, the outer lens 510 may correspond to a support or a housing that supports the light source unit, or supports the light source unit, including the light guide unit, the stereoscopic effect creation unit, and the light absorption unit.

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
12: Second side
20: Stereoscopic effect forming part
21: pattern bending part
22: Pattern
30: light absorbing portion
40: Support
42:
44:
50:
100, 100A, 200: illumination member
120:
130: Adhesion pattern layer
140: reflection pattern
300, 400, 500: Lighting device
221: slope

Claims (18)

A light guide portion having a first surface and a second surface opposite to the first surface and having a predetermined thickness between the first surface and the second surface;
A three-dimensional effect forming unit provided on a second surface of the light guide unit; And
A light absorbing portion on a first side between the first surface and the second surface;
/ RTI >
Wherein the stereoscopic effect forming portion includes a pattern sequentially arranged on the second surface and having an inclined surface having an inclination angle with respect to the second surface, wherein the pattern is formed by the refraction or reflection of the incident light on the inclined surface, Guiding a first surface direction facing one side or a second surface direction facing the second surface to generate linear light of a first path orthogonal to each pattern extending direction of a plurality of unit patterns of the pattern,
And the light absorbing portion absorbs incident light of a second path different from the first path. The method according to claim 1,
Wherein the first side surface of the light guide portion extends along the sequential arrangement direction of the first path or the pattern. The method according to claim 1,
Wherein the light absorbing portion includes a coating layer, a pad layer, or a bracket in which a light absorbing material is dispersed on a surface or inside. The method according to claim 1,
Wherein the inclined surface of the pattern is a mirror-finished surface. The method of claim 4,
Wherein the roughness of the inclined surface has an arithmetic average roughness (Ra) of 0.02 or less and a maximum height roughness (Ry) of 0.30 or less. The method according to claim 1,
Wherein the cross section of the inclined surface of the pattern is a straight line, a curved line, a bent line graph, or a combination thereof. The method according to claim 1,
Wherein the three-dimensional effect forming portion includes a pattern processing surface directly processed with the first surface or the second surface of the light guide portion, or a separate pattern layer joined to the first surface or the second surface. The method of claim 7,
And a reflecting portion on the pattern layer or the light guide portion. The method of claim 8,
A pattern layer, or a reflection pattern between the light guide portion and the reflection portion, an adhesive pattern layer, a spacing region, or a combination thereof. The method of claim 8,
And a separating portion disposed between the light guiding portion and the pattern layer so that a difference in refractive index between the light guiding portion and the pattern layer is equal to or greater than a predetermined value. The method according to claim 1,
Wherein the material of the light guide portion comprises glass or resin, and the resin comprises a thermoplastic polymer or a photocurable polymer. The method of claim 11,
Wherein the light guide member comprises a material selected from the group consisting of polycarbonate, polymethylmethacrylate, polystyrene, and polyethylene terephthalate. The method according to claim 1,
Wherein the light guide portion has a thickness of 0.1 mm or more and 10.0 mm or less. An illumination member according to any one of claims 1 to 13; And
A light source unit for irradiating light within the illumination member;
≪ / RTI > 15. The method of claim 14,
Wherein the light source is disposed outside or embedded in the light guide member. 16. The method of claim 15,
Wherein the light source unit includes a printed circuit board that is mounted on one surface of the lighting member, and the light source is mounted on the printed circuit board. 18. The method of claim 16,
Wherein the light source includes a first light source and a second light source that emit light in the same direction or in different directions,
Wherein the light guide portion includes a first pattern for converting incident light of the first light source into linear fluorescent light and a second pattern for converting linear fluorescent light to incident light of the second light source,
Wherein the first pattern and the second pattern are arranged in different directions. 18. The method of claim 17,
Further comprising a support portion or an outer lens for supporting the illumination member or the light source portion,
Wherein the light source is connected to a power source of the vehicle battery.

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