KR20150108212A - Illuminating Member and Lighting Device Using the Same - Google Patents

Abstract

The present invention relates to a lighting device which displays line fluorescence with a 3D effect by using an incident beam having directivity, and a lighting member used in the lighting device. The lighting device includes: a base member of guiding the incident beam; a 3D effect forming part on a first surface or in the base member; and a light source which supplies the incident beam to the base member. Here, the 3D effect forming part has a pattern which includes pattern units. The pattern includes second regions and a first region between the second regions in a pattern arrangement direction. The pattern units have an inclined surface to a first surface. And, the pattern guides the incident beam to a first surface direction which face a first surface or a second surface direction which faces a second surface opposite to the first surface by the reflection and refraction on the inclined surface, generates the line fluorescence with the 3D effect in a first path according to the pattern arrangement direction. Here, the first brightness in the first region of the line fluorescence is lower than the second brightness of the second regions.

Description

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

The present invention relates to an illumination device for displaying linear light having a stereoscopic effect by using incident light having directionality, and a lighting member used for the illumination device.

An LED (Light Emitting Diode) is an element that converts an electric signal into light using a compound semiconductor. 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.

An example of a conventional lighting apparatus using an LED light source is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0009209. The illumination device of this publication is a side illumination type backlight device in which a plurality of LED light sources are disposed on one side of a light guide plate, and is disposed between the reflection film and the light guide plate to diffuse the upwardly leaked light in the left and right directions to minimize the luminance deviation in the light modulation plane.

However, in the prior art of the above publication, it is difficult to apply to a lighting apparatus having a flexible or curved surface because the thickness of the lighting apparatus is limited by the thickness of the light guide plate itself by using the light guide plate and the light guide plate itself is not flexible. And design distortion is not easy.

In addition, most illumination devices using a conventional LED light source are devices that provide simple flat illumination, and have not evolved appropriately with new functions such as the effect of changing the shape of the light and the stereoscopic effect according to the viewing angle. That is, in today's lighting device market, there is a considerable increase in demand for lighting products with new functions under various demands and competitive environments of manufacturers, but the results of research and development on such products are not yet available.

Accordingly, an embodiment of the present invention provides an illumination device capable of converting incident light having directionality into linear light having a stereoscopic effect through a pattern design, and using the same to realize various optical images, and a lighting member used therein.

In another embodiment of the present invention, there is provided an illumination device capable of being applied at high efficiency and low cost to applications such as indoor and outdoor illumination lamps, vehicle lamps, etc., which are flexible or curved while displaying optical images of geometrical shapes, and illumination members used therein.

According to an aspect of the present invention, there is provided a lighting apparatus including a base substrate for guiding incident light, a stereoscopic effect forming unit on an inner side or a first side of the base substrate, and a light source for supplying incident light to the base substrate do. Here, the three-dimensional effect forming portion has a pattern including a plurality of pattern units, and the pattern unit has an inclined surface having an inclination angle with respect to the first surface. The pattern induces the incident light in the first surface direction toward the first surface or the second surface direction toward the second surface opposite to the first surface due to the refraction or reflection at the inclined surface, Thereby generating linear fluorescence having an effect. The linear fluorescence extends in the pattern arrangement direction and has a second lightness in the second region of the pattern and a first lightness in the first region between the second regions that is lower than the second lightness.

In one embodiment, when the first lightness and the second lightness have values between 0 and 100, the first lightness is less than or equal to half of the second lightness.

In one embodiment, the first region of the pattern is a pattern non-pattern portion in which the pattern unit is omitted in the pattern.

In one embodiment, the illumination device further comprises a color pattern layer disposed on the base substrate to correspond to the first area of the pattern in the first or second surface direction.

An illumination member according to another aspect of the present invention includes a base substrate for guiding incident light and a stereoscopic effect forming portion on an inner or first surface of the base substrate. Here, the three-dimensional effect forming section has a pattern including a plurality of pattern units, and the pattern has a first region between the second region and the second region in the pattern arrangement direction, And an inclined surface having an inclination angle. Then, the pattern induces incident light in the first surface direction or the second surface direction by refraction or reflection on the inclined plane to generate linear light having the three-dimensional effect in the first path along the pattern arrangement direction. At this time, the first lightness in the first region of linear fluorescent light is lower than the second lightness in the second region.

In one embodiment, the linear fluorescence exhibits a shape that is disconnected in the first region.

According to the present invention, it is possible to provide an illumination device for converting a directional incident light into a linear light having a three-dimensional effect through a pattern design, particularly a pattern design having a pattern unformed portion, have.

Further, according to the present invention, it is possible to provide an illuminating device and its lighting member which can be applied at high efficiency and low cost to applications such as indoor and outdoor lighting devices and vehicle lamps which are flexible or curved while displaying optical images of geometrical shapes. In addition, it is possible to provide a lighting apparatus and its lighting member having advantages of durability, life span, maintenance, and trouble-shooting, as well as being capable of reducing the manufacturing cost by a simple structure.

1 is a plan view of a lighting device according to an embodiment of the present invention;
Fig. 2 is a partial plan view of the illumination device of Fig.
Fig. 3 is a cross-sectional view taken along the line III-III of Fig. 2;
FIG. 4 is an exemplary diagram of stereoscopic effect linear fluorescent light that can be implemented using the illumination device of FIG.
Fig. 5 is a partially enlarged cross-sectional view for explaining the operation principle of the illumination device of Fig. 1
6 is a cross-sectional view of a modification of the illumination device of Fig. 1
Fig. 7 is a cross-sectional view of an illumination member usable in the illumination device of Fig. 1
8 is a partial cross-sectional view of a lighting apparatus according to another embodiment of the present invention
Fig. 9 is a cross-sectional view of an illumination member usable in the illumination device of Fig. 8
FIGS. 10 and 11 illustrate examples of stereoscopic effect linear fluorescent light that can be implemented using the illumination device of FIG.
Figs. 12 to 13 illustrate examples of a pattern of a three-dimensional effect forming portion employable in the illuminating device of Fig. 8

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 plan view of a lighting apparatus according to an embodiment of the present invention.

Referring to Fig. 1, a lighting apparatus 100 according to the present embodiment includes a base member 10, a three-dimensional effect forming unit 20, and a light source 30. The illumination device 100 may further include a transmissive lens 110.

The base member 10 transmits incident light. The base substrate 10 can move incident light from one side to the other side by internal reflection. The base substrate 10 may be provided in the form of a streamlined plate or film by glass, resin or the like. The base substrate 10 has a first surface and a second surface opposite to the first surface.

The three-dimensional effect forming portion 20 has a pattern 22 formed by a plurality of concave portions or convex portions. The three-dimensional effect forming portion 20 may be formed by a separate pattern layer (see 20a in FIG. 3) provided with a pattern 22 on one surface, but is not limited thereto. In this case, the pattern layer may be made of a thermoplastic, thermosetting or photocurable resin, and may be bonded to the first surface of the base substrate 10 by a condensing force or by a bonding member.

The pattern 22 has a plurality of subpatterns disposed in different regions of the base member 10. The direction of pattern arrangement of the subpatterns may be different from each other, and the pattern extending directions may also be different. However, in the present embodiment, most of the subpatterns may have a form in which subpatterns in different regions are connected to each other and extend in a stripe form. Here, pattern bending portions (refer to reference numeral 23 in Fig. 2) may be provided at the boundaries of adjacent sub patterns according to different pattern extending directions.

Further, the pattern 22 has a plurality of pattern units formed by concave portions or convex portions. The pattern unit has a sloped surface (see reference numeral 221 in Fig. 3) having an inclination angle with respect to the first surface or the second surface. The inclined surface is provided as a mirror-finished surface or a precision machined surface. It is preferable that the roughness of the inclined surface has an arithmetic mean roughness (Ra) of 0.02 or less and a maximum height roughness (Ry) of 0.30 or less.

The light source 30 is embedded in the base substrate 10 to supply incident light into the base substrate 10. The light source 30 may be provided to irradiate light into the base substrate 10 from the first side of the base substrate 10 (hereinafter referred to as an incident surface) according to an implementation (see FIG. 8).

The light source 30 may be an LED package including at least one LED element. When an LED element is used, incident light having strong direct-current of various colors can be used, thereby realizing three-dimensional effect linearly fluorescent light more effectively.

In the present embodiment, the light source 30 has a plurality of LED packages 31 arranged at the edges of the streamlined base member 10 in the shape of an oval dotted line.

The light source 30 is mounted on a printed circuit board that provides a signal for controlling the operation of the LED device or a driving power source. In the present embodiment and the following embodiments, for the sake of convenience, it is assumed that the light source 30 includes a printed circuit board The illustration and description of the printed circuit board of Fig.

The lens 110 is disposed on the base member 10 and protects the base member 10 and the light source 30. The lens 110 may be of various shapes depending on the application using the illumination device. For example, when the illumination device 100 is used as a vehicle lamp, the lens 110 may be an outer lens of a vehicle lamp.

Fig. 2 is a partial plan view of the illumination device of Fig. 1, and Fig. 3 is a sectional view of the illumination device of Fig. 2 taken along line III-III. 4 is an exemplary view of stereoscopic effect linear fluorescent light that can be implemented using the illumination device of FIG. The illumination device of FIG. 2 has a structure in which the lens 110 is removed from the illumination device of FIG.

2 and 3, when power is supplied to a plurality of LED packages 31 of the light source 30, the illumination device 100 may include a pattern 22 designed in a predetermined width and shape, (Hereinafter referred to as a pattern region) that is flat due to refraction and reflection on the inclined plane 221 of the liquid crystal layer 22, as shown in Fig.

The first paths D1, D2, D3, D4, D5, D6, and D7 extend in the direction of arrangement of the patterns 22 in the respective pattern areas Ax indicated by dotted lines . The width and length of each stereoscopic effect linear fluorescent light can also be controlled according to the pattern design in each pattern area Ax.

Such a plurality of stereoscopic effect linear fluorescent lights can be implemented in the illumination device 100A as shown in Fig. In Fig. 4, the LED package 31 has two or three LED elements, and outputs two or three incident light beams. Of course, it is of course possible to arrange two or three LED packages 31 including one LED device in the lighting device 100A according to the implementation. Each incident light is converted into a stereoscopic effect linear fluorescent light of the first path by the pattern 22 and displayed. The illumination device 100A of FIG. 4 is substantially the same as the illumination device 100 of FIG. 1, except that the number of LED packages is greater.

5 is a partially enlarged cross-sectional view for explaining the operation principle of the illumination device of FIG.

5, the incident light BL0 traveling in the base substrate 10 as light supplied from the light source 30 has a refractive index of the base substrate 10 or the pattern layer 20a and a refractive index of the external medium The light is reflected within the laminate of the base substrate 10 and the pattern layer 20a at a critical angle or less determined by the patterning layer 20a and moves from one side to the other.

The incident light BL0 is refracted or reflected by the inclined surface 221 so that the incident light BL0 has an internal incident angle larger than the critical angle and is incident on the second surface direction of the base substrate 10 (z direction) or in the first plane direction (-z direction).

In the case described above, each pattern unit of the pattern 22 functions as indirect light sources that refract or reflect the incident light by 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 of the pattern 22 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.

In other words, the pattern units are sequentially arranged in the pattern arrangement direction (x direction) with respect to the light source 30, and the first pattern units P11, When the second pattern unit P12 of the second area a2 and the third pattern unit P13 of the third area a3 are present, the amount of incident light from the light source 30 to the second pattern unit P12 The two light paths are longer than the first light path from the light source 30 to the first pattern unit P11 and smaller than the third light path from the light source 30 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 is the first distance L1 from the first indirect light source LS1 to the first pattern unit P11, And is shorter than the third distance L3 from the third indirect light source LS3 to the third pattern unit P13. It has a depth sense (stereoscopic effect) going inward in the thickness direction of the base substrate by indirect light sources whose linear fluorescence is located gradually further from the reference point along the first path on the pattern as viewed from the reference point outside the illuminator .

As described above, the plurality of pattern units of the pattern 22 are successively arranged sequentially along the first path of the linear fluorescent light when viewed from a predetermined external reference point, and each acts as indirect light sources located gradually further from the reference point Thereby, the pattern 22 implements a linear beam having a three-dimensional effect on the first path, that is, a three-dimensional effect having a linear shape.

The above stereoscopic effect linear fluorescent light is defined by a predetermined width in a first path predetermined by the pattern design when viewed from the first surface direction or the second surface direction, and the linear light is guided to the first surface of the base substrate 10 Refers to a light image having a depth sense that progressively enters the base substrate 10 on the second surface (or pattern arrangement surface). The stereoscopic effect linear fluorescent light may have a shape gradually decreasing in luminance along the first path.

On the other hand, in the above-described first through third pattern units P11, P12 and P13, the second pattern unit P12 is arranged on the second surface of the base substrate 10 as viewed from the light source 30 side, A pattern unit immediately next to the pattern unit P11 or a pattern unit positioned 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 located immediately after the second pattern unit P12, 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.

Fig. 6 is a cross-sectional view of a modification of the illumination device of Fig. 1;

6, the illumination device 100B according to the present embodiment includes a base substrate 10, a pattern layer 20a forming a three-dimensional effect forming portion by a pattern, a light source 30, and a reflective layer 40 do. The illumination device 100B may include a reflective pattern 120, an adhesive pattern 130, and a spaced-apart area 140 between the pattern layer 20a and the reflective layer 40. [ The lighting apparatus 100B includes a printed circuit board 150 on which the light source 30 is mounted, a support 160 such as a frame for supporting the printed circuit board 150, And a power supply 180 for supplying the power.

The reflective layer 40 is disposed to face the pattern 22 on the pattern layer 20a. At least a portion of the reflective layer 40 may be disposed between the printed circuit board 150 and the pattern layer 20a.

The reflective layer 40 is made of a material having a high reflection efficiency and reflects the light passing through the pattern layer 20a from the light source 30 and returns it to the pattern layer 20a. By using the reflective layer 40, the light loss of the illumination device can be reduced, and the linear light having a stereoscopic effect can be expressed more clearly.

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, aluminum oxide, zinc oxide, carbonate, barium sulfate, calcium carbonate and the like can be used. As the synthetic resin raw material, polyethylene terephthalate, polyethylene naphthalate, acrylic, polycarbonate, polystyrene, polyolefin, Ozone acetate, ozone acetate, weather-resistant vinyl chloride, and the like may be used, but the present invention is not limited thereto. In addition, the reflective layer 40 may be formed of silver (Ag), aluminum (Al), stainless steel (304SS), or the like.

A reflection pattern 120 may be provided on the reflection layer 40 to control the reflection efficiency of the reflection layer 40 and the reflection area. The reflection pattern 120 may be embodied as a pattern printed with an ink material on one side of the reflective layer 40 facing the pattern layer 20a. The reflection pattern 120 may have a pattern in which hexagon pattern units are arranged in a honeycomb pattern.

As the material of the reflection pattern 120, the material of the reflection layer 40 may be used, but it is not limited thereto. As the material of the reflection pattern 120, TiO ₂ , CaCO ₃ , BaSO ₄ , Al ₂ O ₃ , Silicon, PS (Poly Stylen) and the like can be used.

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. [ Such an arrangement prevents the pattern covered by the resin layer from losing its inherent function (reflection and refraction function) when the resin layer is applied on the pattern layer 20a to form the base substrate 10. [ That is, the pattern should function to refract and reflect the incident light on the inclined plane and to guide the incident light out of the device. When the pattern is covered with the resin layer having the refractive index similar to the refractive index of the pattern layer 20a, the inclined plane of the pattern substantially disappears, Can not be performed. However, in this embodiment, the occurrence of the above-described problem is prevented by disposing the pattern layer 20a such that the pattern does not face the first surface of the base substrate 10 and faces the reflective layer 40. [

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, a pattern is formed between the pattern layer 20a and the reflective layer 40 by a pattern of the pattern layer 20a or an adhesive pattern 130 therebetween, (140) may be formed. It is possible to prevent the formation of the spacing region by disposing the adhesion pattern 130 on the entire pattern arrangement surface of the pattern layer 20a. However, when the spacing region 140 is disposed without doing so, It is possible to induce fine scattering of the linear fluorescent light itself and the surrounding light so that the stereoscopic effect linear fluorescent light can function to express a still another light image. The spacing region 140 may be an air layer or a vacuum layer.

The printed circuit board 150 is connected to the light source 30 and supplies a power source or a driving signal to the light source 30. The printed circuit board 150 may include a Rigid type or a Flexible type. The light source 30 mounted on the printed circuit board 150 can be disposed on the incident surface 101 of the base substrate 10 through the opening 41 of the reflective layer 40 and the opening of the pattern layer 20a .

The supporting portion 160 may be provided to support the base substrate 10, the reflective layer 40, and the like as well as the printed circuit board 150 on which the light source 30 is mounted. The support portion 160 may be made of a metallic material such as stainless steel.

The power supply unit 180 is connected to the light source 30 to supply power. 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 30 may be connected to the vehicle battery and driven by the power source of the vehicle battery.

According to the present embodiment, it is possible to provide a lighting device capable of changing a light image by using a reflection pattern 120, an adhesive pattern 130, or a spacing region 140 when realizing stereoscopic effect linear light by pattern design And these lighting devices can be effectively applied to various applications such as vehicle dashboards.

7 is a cross-sectional view of an illumination member usable in the illumination device of Fig.

7, the illumination member 100C according to the present embodiment includes a base substrate 10, a pattern layer 20a, a reflection layer 40, and a separation layer 50. [

The illumination device using the illumination member 100C of the present embodiment is different from the illumination device of the embodiment described above with reference to Figs. 3 and 6, except for the arrangement direction of the pattern layer 20a described above and the separation layer 50 Can be the same.

In this embodiment, the pattern layer 20a is arranged so that the pattern 22 of the three-dimensional effect forming portion 20 is embedded by the resin layer forming the base substrate 10. [ In the above case, if the refractive index difference between the pattern layer 20a and the resin layer is small, the reflection and refraction function of the pattern 22 can be almost lost. In order to prevent this, the separating layer 50 is disposed between the pattern 22 of the pattern layer 20a and the base substrate 10 in this embodiment.

In other words, when the difference between the refractive index of the base substrate 10 and the refractive index 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, the incident light of the light source 30 can not be guided to the outside of the apparatus from the pattern 22 of the three-dimensional effect forming section 20, and it is difficult to realize stereoscopic effect linear fluorescent light. Therefore, in the illumination member 100C according to the present embodiment, the separation layer 50 is provided between the pattern 22 and the base substrate 10 to clearly define the base substrate 10 and the pattern 22 formed of the resin layer So that reflection and refraction of the incident light can be smoothly performed on the inclined surface of the pattern 22. [

The separation layer 50 may be a metallic coating layer disposed between the base substrate 10 and the pattern layer 20a to prevent the refractive index difference between the base substrate 10 and the pattern layer 20a from becoming below a certain value.

According to the present embodiment, it is possible to embed the pattern 22 of the three-dimensional effect forming section 20 by the base substrate made of the resin layer or to arrange it in the light guide section made of the resin layer. The light guide portion corresponds to a laminate of a base substrate and a pattern layer each made of a resin layer.

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

8, the illumination device 200 according to the present embodiment includes a base substrate 10 for guiding incident light, a three-dimensional effect forming unit 20 on the inside or the first surface of the base substrate, And a light source 30 for supplying the light.

The three-dimensional effect forming section 20 has a pattern 22 including a plurality of pattern units. The pattern 22 has a first region E in which some pattern units are omitted in the pattern arranging direction (see D1 to D7) And the pattern unit has an inclined surface having an inclination angle with respect to the first surface.

The lighting apparatus 200 of the present embodiment is similar to the lighting apparatus 200 of the first embodiment except that the pattern non-forming portion, that is, the first region E and the LED package 31 are arranged so as to surround the outer surface of the base substrate 10 having a flat elliptical shape. And may be substantially the same as at least one of the embodiments described above with reference to FIG.

In this embodiment, the pattern 22 has a first region, which is a pattern forming portion where a pattern unit is provided, and a first region which is located between a second region and a second region and in which a pattern unit is omitted, And the second lightness in the second region has a value between 0 and 100, the first lightness becomes less than or equal to half of the second lightness. According to such a configuration, the first lightness in the first region exhibits a relatively dark hue, the second lightness in the second region exhibits a relatively bright hue, and the linear fluorescent light has a cut-off portion due to the lightness difference described above, Can be expressed as linear fluorescence.

According to this embodiment, when power is supplied to a plurality of LED packages 31, in each pattern area Ax indicated by a dotted line, the pattern 22 is formed so that the incident light is refracted and reflected in the inclined plane, It is possible to generate and display a linear light having a steric effect in the first path (D1 to D7) along the pattern arrangement direction by inducing in the second surface direction and having a disconnected shape.

9 is a cross-sectional view of an illumination member usable in the illumination device of Fig.

Referring to Fig. 9, the illumination member 200A according to the present embodiment includes a light guide portion 10a and a color pattern layer.

The light guide portion 10a is a laminate of the base material and the pattern layer of the above-described embodiment provided in a single structure. A pattern 22 is provided on the first surface 12 of the light guide portion 10a. The pattern 22 implements a stereoscopic effect forming part 20. [

The color pattern layer is intended to emphasize a predetermined color so that the cut portion of the linear fluorescent light appears more intense in the first region (see E in Fig. 8) which is the pattern unformed portion. The color pattern layer has a first film substrate 61, a second film substrate 62, and a color pattern 70 between the first film substrate and the second film substrate. The color pattern 70 is provided so as to correspond to the first region which is the pattern unformed portion of the pattern 22 when viewed from the light emitting surface which is the front face of the illumination member. In this structure, the color pattern 70 is disposed between and protected by the first film substrate 61 and the second film substrate 62, and a first film substrate (not shown) that protects the color pattern 70 in a sandwich form 61 or polyethylene terephthalate (PET) or polyether sulfones (PES) may be used as the material of the second film substrate 62. The color of the above-described color pattern 70 may be black, red, yellow, and the like.

In certain implementations, the color pattern 70 may be provided in an adhesive pattern between the first film substrate 61 and the second film substrate 62. In that case, the adhesive pattern may include a dye dispersed and disposed on the inside or the surface thereof so as to display a predetermined color. In another embodiment, the color pattern 70 may be provided by printing inks of a predetermined color on one surface of the first film substrate 61 or the second film substrate 62. [ In this case, it is possible to omit either the first film base 61 or the second film base 62. When using two film bases, a separate adhesive pattern or an adhesive layer is formed on the first film base 61, And the second film substrate 62. In this case,

FIGS. 10 and 11 are exemplary diagrams of stereoscopic effect linear fluorescent light that can be implemented using the illumination device of FIG.

10 and 11, the illumination device according to the present embodiment includes a pattern unformed portion formed in a stripe shape in the lateral direction in a pattern region of a predetermined shape of the three-dimensional effect forming portion (FIGS. 10 and 11 ) Reference].

The pattern unformed portion has a linear shape, a curved shape, or a combination thereof, and can be arbitrarily adjusted according to the optical image whose thickness and number are to be realized.

When power is supplied to the light source, a plurality of stereoscopic effect linear fluorescent light is realized on the pattern region by the pattern design. At this time, the stereoscopic effect linear fluorescent light is cut off in the pattern non-forming portion (refer to FIG. 10 and FIG. 11 (b)).

In the turn-off state of the above-described illuminating device, the color of the reflection layer, that is, silver due to the silver (Ag) film layer or white due to white PET can be displayed throughout the pattern area. However, in the present embodiment, similar to the turn-on state of the lighting apparatus, the color pattern layer or the color pattern (refer to reference numeral 70 in Fig. 9) is used to indicate the shape or the image including the pattern non- To emphasize the pattern unformed portions (see Figs. 10 and 11 (c)).

Figs. 12 to 14 are exemplary views of a pattern of a three-dimensional effect forming portion employable in the illuminating device of Fig.

Referring to FIG. 12, the pattern 22 of the stereo 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 light guiding portion or the laminate of the base substrate 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 illumination device of this embodiment, the inclined surface of the pattern of the three-dimensional effect forming portion is an inclination angle capable of appropriately reflecting or refracting the incident light, and is approximately 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. 13, 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. 14, in the illumination device of the present embodiment, the pattern 22 of the three-dimensional effect forming portion 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.

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: base substrate
10a: light guide portion
20: Stereoscopic effect forming part
20a: pattern layer
22: Pattern
221: slope
30: Light source
40: reflective layer
50: separation layer
70: Color pattern
E: first region

Claims (20)

A base substrate for guiding incident light;
A three-dimensional effect forming unit on the inside or the first surface of the base substrate; And
A light source for supplying the incident light to the base substrate;
/ RTI >
Wherein the three-dimensional effect forming portion has a pattern including a plurality of pattern units, the pattern unit has an inclined surface having an inclination angle with respect to the first surface,
Wherein the pattern is formed by directing the incident light to a first surface direction toward the first surface or a second surface direction toward a second surface opposite to the first surface by refraction or reflection on the inclined surface, Generating a linear fluorescent light having a three-dimensional effect in a first path,
Wherein the linear light extends in the pattern arrangement direction and has a second lightness in a second region of the pattern and a first lightness in a first region between the second regions that is lower than the second lightness. The method according to claim 1,
Wherein when the first lightness and the second lightness have values between 0 and 100, the first lightness is not more than half of the second lightness. The method according to claim 1,
Wherein the first area of the pattern is a non-patterned part in which the pattern unit is omitted in the pattern. 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 4,
Wherein a width or a pitch between pattern units adjacent to each other of the pattern is 10 to 500 mu m. The method according to claim 1,
And a color pattern layer disposed on the base substrate corresponding to the first area of the pattern in the first surface direction or the second surface direction. The method according to claim 1,
Wherein the base substrate is a resin layer and the stereoscopic effect forming portion is provided as a pattern layer bonded to a first surface of the base substrate. The method of claim 7,
Wherein the pattern is provided on the first surface of the pattern layer and the second surface opposite to the first surface of the pattern layer is bonded to the first surface of the base substrate. The method of claim 8,
And a reflective layer on the first side of the pattern layer. The method of claim 9,
A spacing between the pattern and the reflective layer, an adhesive pattern, a reflective pattern, or a combination thereof. The method according to claim 1,
Further comprising a separation layer between the pattern and the base substrate,
Wherein the base substrate is a resin layer, the steric effect forming portion is provided as a pattern layer bonded to a first surface of the base substrate, 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 pattern comprises a first pattern disposed on a first region of the base substrate and a second pattern disposed on a second pattern region of the base substrate different from the first pattern region,
Wherein the light source includes a first light source unit for irradiating the first pattern with the first incident light and a second light source unit for irradiating the second pattern with a second incident light in a direction different from the first incident light. The method according to claim 1,
Wherein the base substrate and the stereoscopic effect forming portion are provided as a single substrate, and the stereoscopic effect forming portion is arranged inside or on the surface of the single substrate. The method according to claim 1,
And an outer lens in which the base substrate is disposed on one surface. 15. The method of claim 14,
Wherein the light source is connected to a vehicle battery and is operated by a power source of the vehicle battery. A base substrate for guiding incident light; And
A steric effect forming portion on the inside or the first surface of the base substrate;
/ RTI >
Wherein the three-dimensional effect forming portion has a pattern including a plurality of pattern units, the pattern has a first region between a second region and the second region, and the pattern unit has an inclination angle with respect to the first face And an inclined surface,
The pattern is formed by guiding the incident light in the direction of the first surface facing the first surface or the direction of the second surface facing the second surface opposite to the first surface by refraction or reflection on the inclined surface, Wherein the first lightness in the first region of the linear fluorescent light is lower than the second lightness in the second region. 18. The method of claim 16,
Wherein when the first lightness and the second lightness have values between 0 and 100, the first lightness is not more than half of the second lightness. 18. The method of claim 17,
And the linear fluorescent light shows a shape disconnected from the first region. 18. The method of claim 16,
And a color pattern layer disposed on the base substrate corresponding to the first area of the pattern in the first surface direction or the second surface direction. 18. The method of claim 16,
And an outer lens in which the base substrate is disposed on one surface.

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