KR102468322B1 - Lighting module and lighting apparatus - Google Patents

Abstract

The lighting module disclosed in the embodiment includes a light emitting diode; and a light guide unit in which the light emitting diode is disposed on an incident surface. The light guide unit may include: a first stereoscopic image reflector including a first pattern having a plurality of pieces arranged in a first direction on a lower surface and having a long length in a second direction; and a second 3D image reflector including a first reflection area including a second pattern having a convex curved surface on the lower surface and a second reflection area including a flat portion.

Description

Lighting module and lighting device having the same {LIGHTING MODULE AND LIGHTING APPARATUS}

The embodiment relates to a lighting module having light emitting diodes.

The embodiment relates to a lighting module having a plurality of stereoscopic image reflectors.

Embodiments relate to lighting modules providing different three-dimensional images.

The embodiment relates to a backlight unit having a lighting module, a liquid crystal display, or a vehicle lamp.

Typical lighting applications include backlights for displays and signage as well as automotive lights.

Light emitting diodes, for example, light emitting diodes (LEDs) have advantages over existing light sources such as fluorescent lights and incandescent lights, such as low power consumption, semi-permanent lifespan, fast response speed, safety, and environmental friendliness. Such light emitting diodes are applied to various lighting devices such as various display devices and indoor or outdoor lights.

Recently, a lamp employing a light emitting diode has been proposed as a light source for vehicles. Compared with incandescent lamps, light emitting diodes are advantageous in that power consumption is small. However, since the emission angle of light emitted from the light emitting diode is small, when the light emitting diode is used as a vehicle lamp, there is a demand for increasing the light emitting area of the lamp using the light emitting diode.

Since the size of the light emitting diode is small, it can increase the degree of freedom in the design of the lamp, and it is also economical due to its semi-permanent lifespan.

An embodiment of the present invention provides lighting modules having three-dimensional images of different types or shapes.

An embodiment of the present invention provides a lighting module having a light guide unit capable of giving a three-dimensional effect having different shapes by different pattern shapes.

An embodiment of the present invention may provide a lighting module having a light guide including a first stereoscopic image reflector providing a 3D image and a second stereoscopic image reflector providing a 2D image on one surface.

An embodiment of the present invention may provide a lighting module having a light guide unit for providing a first stereoscopic image to a first stereoscopic image reflector and providing a second stereoscopic image to a second stereoscopic image reflector using light emitted from a light emitting diode. .

An embodiment of the invention provides a lighting module in which the first stereo image reflector and the second stereo image reflector are provided on the first surface of the light guide unit and provide first and second stereo images through the opposite second surface. can

An embodiment of the present invention provides a lighting module for irradiating a line light source and an image light source having a predetermined shape, and a lighting device having the same.

An embodiment of the present invention may provide a backlight unit having a lighting module, a liquid crystal display device, or a vehicle lamp.

A lighting module according to an embodiment includes a light emitting diode; and a light guide unit in which the light emitting diode is disposed on an incident surface. The light guide unit may include: a first stereoscopic image reflector including a first pattern having a plurality of pieces arranged in a first direction on a lower surface and having a long length in a second direction; and a second 3D image reflector including a first reflection area including a second pattern having a convex curved surface on the lower surface and a second reflection area including a flat portion.

According to an embodiment of the present invention, at least one or a plurality of second stereo image reflectors may be disposed within an area of the first stereo image reflector.

According to an embodiment of the present invention, a plurality of second patterns having a hemispherical shape are arranged in the first reflection area, and the flat portion may be an area without the first and second patterns.

According to an embodiment of the invention, the side cross-section of the first pattern may have a triangular shape, and the side cross-section of the second pattern may have a hemispherical shape.

According to an embodiment of the present invention, the first stereoscopic image reflector reflects the incident light to provide a 3D line light source, and the second stereoscopic image reflector reflects the incident light to form the first stereoscopic image reflector. A two-dimensional image different from the image may be provided.

According to an embodiment of the present invention, the light emitting diode is disposed on at least one or both sides of the light guide unit, and a circuit board may be included under the light emitting diode.

A lighting module according to an embodiment of the invention includes a light emitting diode; and a light guide part on which the light emitting diode is disposed on an incident surface, wherein the light guide part includes: a first stereo image reflector configured to emit a first stereo image by reflecting light incident from the light emitting diode; and a second stereo image reflector that reflects the second stereo image and emits a second stereo image, wherein the first stereo image reflector includes a first pattern in which a plurality of convex portions and concave portions are alternately arranged, and reflects the second stereo image. The portion includes a first reflection region having a second pattern in which a plurality of convex portions having a convex curved surface are disposed, and a second reflection region having a flat flat portion, the first and second reflection regions being the second stereoscopic image reflector. Depending on the degree of reflection of light within, it can be emitted into illumination and sound.

According to an embodiment of the present invention, a 3D image and a 2D image may be provided to emphasize a three-dimensional effect and a sense of space in lighting.

According to an embodiment of the present invention, by providing a dynamic image and a static image, it is possible to provide a complex image of various shapes in lighting.

According to an embodiment of the present invention, the manufacturing process can be facilitated by forming the first stereo image reflector and the second stereo image reflector on one surface of the light guide unit.

Optical reliability of a lighting module and a lighting device having the lighting module according to the embodiment may be improved.

Reliability of a lighting device for a vehicle having a lighting module according to an embodiment may be improved.

The embodiment may be applied to a backlight unit having a lighting module, various types of display devices, a surface light source lighting device, or a vehicle lamp.

1 is a perspective view illustrating a lighting device according to an embodiment of the present invention.
FIG. 2 is a plan view of the lighting module in FIG. 1 .
FIG. 3 is a partial side cross-sectional view of the lighting module in FIG. 2 .
FIG. 4 is a view for showing a second stereo image reflection part of the light guide part in the lighting module of FIG. 2 .
FIG. 5 is an example of a second pattern of the second stereoscopic image reflector of FIG. 4 .
FIG. 6 is another example of a first pattern of a first stereoscopic image reflector of the light guide unit of the lighting module of FIG. 3 .
FIG. 7 is an example of first and second stereoscopic images by the lighting module of FIG. 4 .
8 is an example of an image according to an observer's observation angle of a lighting module according to an embodiment of the present invention.

Hereinafter, a preferred embodiment in which a person skilled in the art can easily practice the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are only one preferred embodiment of the present invention, and there may be various equivalents and modifications that can replace them at the time of this application.

In describing the operating principle of the preferred embodiment of the present invention in detail, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and the meaning of each term should be interpreted based on the contents throughout this specification. The same reference numerals are used throughout the drawings for parts having similar functions and actions.

The lighting device according to the present invention can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. For example, when applied to vehicle lamps, head lamps, side lights, side mirror lights, fog lights, tail lights, brake lights, daytime running lights, vehicle interior lights, door scars, rear combination lamps, backup lamps etc. can be applied. The lighting device of the present invention can be applied to indoor and outdoor advertising devices, display devices, and various electric vehicle fields, and can be applied to all lighting-related fields or advertising-related fields that are currently developed and commercialized or can be implemented according to future technological development. will say that

Hereinafter, embodiments will be clearly revealed through the accompanying drawings and description of the embodiments. In the description of the embodiments, each layer (film), region, pattern or structure is formed "on" or "under" the substrate, each layer (film), region, pad or pattern. In the case of being described as, "on" and "under" include both "directly" or "indirectly" formed through another layer. In addition, the criterion for the top or bottom of each floor will be described based on the drawings.

<Light module>

1 is a perspective view showing a lighting device according to an embodiment of the present invention, FIG. 2 is a plan view of the lighting module in FIG. 1, FIG. 3 is a partial side cross-sectional view of the lighting module in FIG. 2, and FIG. 4 is the lighting module of FIG. 2 , FIG. 5 is another example of the first pattern of FIG. 3 , FIG. 6 is an example of the second pattern of the second stereo image reflector of FIG. 4 , and FIG. 7 is an example of first and second stereoscopic images by the lighting module of FIG. 2 .

Referring to FIGS. 1 to 7 , the lighting device may include a lighting module 100 and a cover 50 on the lighting module 100 . The cover 50 may have an opening 55 with an open interior, and may cover an outer circumference of the lighting module 100 on an outer circumference. The opening 55 of the cover 50 may open an inner area where an image is provided in the top surface of the lighting module 100 . The cover 50 may be formed of resin, plastic material or metal material.

The lighting module 100 is provided in one or a plurality, and can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. For example, in the case of lighting modules applied to vehicle lamps, head lamps, side lights, side mirror lights, fog lights, tail lights, turn signal lamps, back up lamps, stop lamps ), daytime running right, vehicle interior lighting, door scarf, rear combination lamp, etc.

1 and 2, the lighting module 400 includes a light guide part 30 and light emitting modules 10A and 20A disposed on at least one side or at least both sides of the light guide part 30. can include The light emitting modules 10A and 20A may be disposed on one side of the light guide part 30, on opposite sides of the light guide unit 30, or on adjacent sides of the light guide unit 30. For convenience of explanation, the light emitting modules 10A and 20A will be described as being disposed in directions opposite to each other of the light guide part 30 . The light guide part 30 reflects the light incident on at least one side toward the exit side. The light emitted from the light guide part 30 in the direction of the emission side may be provided as light having a three-dimensional image.

<light emitting module>

The light emitting modules 10A and 20A include a first light emitting module 10A disposed on the first incident surface S2 of the light guide part 30 and a second incident surface S3 of the light guide part 30. ) may include a second light emitting module 20A disposed in the The first and second incident surfaces S2 and S3 may be surfaces opposite to each other.

The first light emitting module 10A may include a first circuit board 10 and a first light emitting diode 11 disposed on the first circuit board 10 . The second light emitting module 20A may include a second circuit board 20 and a second light emitting diode 21 on the second circuit board 20 .

The first circuit board 10 of the first light emitting module 10A is disposed under the first incident surface S2 of the light guide part 30, and one or a plurality of first light emitting diodes 11 are provided. They are arranged in the second direction and may be disposed to face the first incident surface S2 of the light guide part 30 .

The second circuit board 20 of the second light emitting module 20A is disposed under the second incident surface S3 of the light guide part 30, and one or a plurality of second light emitting diodes 21 are provided. They are arranged in a second direction and may be disposed to face the second incident surface S3 of the light guide part 30 .

The circuit boards 10 and 20 include a printed circuit board (PCB), for example, a resin-based printed circuit board (PCB), a metal core PCB, and a flexible PCB, non-flexible PCB, ceramic PCB, or FR-4 substrate. The circuit boards 10 and 20 may have one or two or more layers having a circuit pattern, and may include a single-sided PCB or a double-sided PCB.

The first and second light emitting diodes 11 and 21 may be disposed on each circuit board 10 and 20 in a side view type package.

3 or 5 , the first light emitting diode 11 may include a light exit surface S1 facing the first incident surface S2 of the light guide part 30 .

The lengths of the circuit boards 10 and 20 in the X direction and the Y direction may be equal to or different from each other. The thickness of the circuit boards 10 and 20 may be 1 mm or less, for example, in the range of 0.3 mm to 1 mm. The thickness of the lighting module 100 may be 5.5 mm or less, for example, in the range of 4.5 mm to 5.5 mm or in the range of 4.5 mm to 5 mm from the lower surface of the circuit boards 10 and 20 .

The light emitting diodes 11 and 21 are disposed on the circuit boards 10 and 20 and may be electrically connected to the circuit boards 10 and 20 . The light emitting diodes 11 and 21 may be connected in series or parallel on each circuit board 10 and 20 .

Since the first light emitting diode 11 and the second light emitting diode 21 do not face each other and may be displaced, light can be uniformly provided to the entire area of the light guide part 30 . The distance between the first light emitting diodes 11 may be the same as the distance between the second light emitting diodes 21 . By disposing the first and second light emitting diodes 11 and 21 in a zigzag pattern on the circuit board 10 and 20, the luminous intensity of the entire area can be improved.

As shown in FIG. 3 , the light emitting diodes 11 and 21 may have a light exit surface S1 from which light is emitted, and the light exit surface S1 is, for example, horizontal to the circuit boards 10 and 20. It may be perpendicular to the Z-axis direction with respect to the plane. The light exit surface S1 may face the first incident surface S2 of the light guide part 30 .

The thickness of the light emitting diodes 11 and 21 may be, for example, 2 mm or less, for example, 1 mm or less. The length of the light emitting diodes 11 and 21 in the X-axis direction may be 1.5 times or more than the thickness of the light emitting diodes 11 and 21, and the width in the Y-axis direction may be smaller than the length in the X-axis direction. Looking at the spread angle distribution of the light emitting diodes 11 and 21, the light spread angle in the ±X-axis direction may be wider than the light spread angle in the ±Z-axis direction based on the horizontal straight line Y0. The light directing angle of the light emitting diodes 11 and 21 in the ±X-axis direction may have a range of 110 degrees or more, for example, 120 degrees to 160 degrees or 140 degrees or more. A light directing angle of the light emitting diodes 11 and 21 in the ±Z-axis direction may be greater than or equal to 110 degrees, for example, in the range of 110 degrees to 160 degrees.

The light emitting diodes 11 and 21 may be arranged in one row or two or more rows on the circuit boards 10 and 20 . The light emitting diodes 11 and 21 may be arranged in the X-axis direction.

The light emitting diodes 11 and 21 are devices having a light emitting chip 15, for example, a light emitting diode (LED) chip (hereinafter referred to as a light emitting chip), and may include a package in which the light emitting chip is packaged. The light emitting chip 15 may emit at least one of blue, red, green, ultraviolet (UV), and infrared light. The light emitting diodes 11 and 21 may emit at least one of white, blue, red, green, and infrared light. The light emitting diodes 11 and 21 may be of a side view type electrically connected to the circuit boards 10 and 20, but are not limited thereto. As another example, the light emitting diodes 11 and 21 may be implemented as a light emitting chip, for example, in the form of a chip on board (COB), but is not limited thereto.

<Light guide unit 30>

As shown in FIGS. 2 and 3 , the length of the light guide part 30 in the first direction (Y) and the length in the second direction (X) may be equal to or different from each other. The light guide unit 30 may include a pattern on at least one or both of the upper and lower surfaces to improve light extraction efficiency. Different types of patterns may be included on the lower surface of the light guide part 30 . The lower surface of the light guide part 30 may include a pattern realized with different images, a reflection pattern, or an image reflection part. The lower surface of the light guide part 30 may include a pattern providing a 3D image effect and a pattern providing a 2D image effect.

The light guide unit 30 has a plate or film structure made of a transparent material, and guides incident light supplied from the light emitting modules 10A and 20A and emits the incident light through internal reflection. The material of the light guide part 30 may include resin or glass. When the light guide part 30 is formed of a resin layer, the resin layer may be provided using a thermoplastic polymer or a photocurable polymer. When the light guide part 30 is a resin layer, it may include at least one of polycarbonate, polymethylmethacrylate, polystyrene, or polyethylene terephthalate.

The thickness of the light guide part 30 is about 0.1 mm or more and about 10.0 mm or less. If the thickness of the light guide part 30 is less than about 0.1 mm, when using a light emitting diode as a light source, the height of the light emitting surface of the light emitting diodes 11 and 21 must be made smaller than about 100 μm, so manufacturing is difficult and costly. this may increase In addition, when the thickness of the light guide unit 30 is greater than about 10.0 mm, the thickness and weight of the lighting device may increase and material cost may increase. Also, the light guide unit 30 may have a thickness of about 100 μm or more and about 250 μm or less. In this case, the light guide unit 30 may have flexibility enough to be properly wound on a roll device or the like. Also, depending on implementation, the light guide unit 30 may have a thickness of about 250 μm or more and about 10.0 mm or less. In that case, since the light guide part 30 is difficult to wind on a roll device, it has a plate shape and can be applied to applications. In the light guide part 30, the thickness or height of the first incident surface S2 and the thickness or height of the opposite second incident surface S3 may be the same.

Different three-dimensional image reflecting parts 32 and 35 may be included on the first surface, which is the lower surface of the light guide part 30 . The stereoscopic image reflectors 32 and 35 may include a first stereoscopic image reflector 32 and a second stereo image reflector 35 .

The first stereoscopic image reflector 32 may include a first pattern P1 disposed on a first surface. The first pattern P1 has a shape in which a portion of the first surface of the light guide part 30 is removed, and a plurality of convex parts and a plurality of concave parts may be alternately arranged. A direction in which the plurality of convex portions and the plurality of concave portions are arranged may be a direction in which light is emitted or a first direction (Y), or may be a direction orthogonal to the direction in which the light emitting diodes 11 and 21 are arranged.

In the first pattern P1, the convex part protrudes in the direction of the first surface or the lower surface of the light guide part 30, and the concave part may be disposed concavely between the convex parts. The convex portion and the concave portion of the first pattern P1 may have a long length in the second direction. Convex and concave portions of the first pattern P1 may be provided in a stripe shape. The side sectional shape of the convex portion of the first sine pattern P1 may include a hemispherical or triangular shape. The top view shape of each convex portion of the first pattern P1 may be a polygonal shape, for example, a quadrangular shape. One pair of convex and concave portions of the first pattern P1 may be a unit pattern. The convex portion and the concave portion may be provided in a line shape or bar shape having a predetermined width in the second direction. Here, the first direction may be a direction in which the first pattern P1 is arranged, and the second direction may be an extension direction of the first pattern P1.

In an embodiment of the invention, the first pattern P1 may limit the width to height (or depth) between adjacent convex portions at a predetermined ratio. The width may be the pitch of the first pattern P1. For example, when the first pattern P1 of the light guide part 30 is designed to emphasize the three-dimensional effect light, the width may be equal to or smaller than the height. Alternatively, when a relatively long image is expressed in light of a stereoscopic image, the width of the first pattern P1 may be greater than the height. The width may be 10 μm to 500 μm. The width may be an average interval between first patterns P1 adjacent to each other in the first direction Y, and may be adjusted according to a design or arrangement structure of the first patterns P1 or a desired optical image shape. As another example, when the first pattern P1 has a lenticular shape, the ratio of the width to the height of the first pattern P1 is about 1/2 or less, or It may be designed such that the inclination angle is about 60° or less. Alternatively, if the ratio of the width to the height of the first pattern P1 is designed to be less than 1, it may be easier to manufacture the pattern than when the ratio of the width to the height of the first pattern P1 is 1 or more.

Here, as shown in FIG. 3 , first patterns P1 having convex portions may be arranged at predetermined intervals, or as shown in FIG. 5 , first patterns P1 having convex portions may be continuously arranged. The concave portion of FIG. 3 may have a flat upper surface between the convex portions, and the concave portion of FIG. 5 may have an inclined surface without a flat upper surface between the convex portions. The first pattern P1 may have the structure of FIG. 3 or FIG. 5 .

As shown in FIGS. 3 and 5 , the convex portion of the first pattern P1 may have an inclined angle with respect to the first surface. The inclination angle may be in the range of 5 degrees to 85 degrees, so that incident light may be reflected or refracted to radiate light L0 toward the emission surface. The inclined surface refracts and reflects the incident light and guides it in the direction of the second surface opposite to the first surface, thereby creating a three-dimensional effect or depth on the first optical path orthogonal to the extension direction of each pattern of the first pattern P1. Generates a line shaped beam with a sense. Linear light having such a three-dimensional effect or a sense of depth may appear as shown in FIGS. 7 and 8 . The image of the linear light may have a first stereo image shape implemented by the first stereo image reflector 32 . The first stereoscopic image shape may be a linear light having a 3D stereoscopic image. The linear light may be implemented as an image having a plurality of linear lights according to the number of the convex portions. A line width of the linear light may correspond to a width of the convex part, and an interval between the linear lights may correspond to a width of the concave part.

Referring to FIGS. 2 to 4 , the light guide unit 30 according to the embodiment of the present invention may include a second stereoscopic image reflector 35 on the lower surface. The second stereo image reflector 35 may be disposed between the first stereo image reflector 32 . The second stereo image reflector 35 may be disposed in an area that does not overlap with the first stereo image reflector 32 in a vertical direction. The second stereo image reflector 35 may have a pattern shape different from that of the first stereo image reflector 32 .

The second stereoscopic image reflector 35 may include a second pattern P2. The second pattern P2 may include a lens pattern convex in the lower surface direction. The second pattern P2 may have a curved shape, or may include a hemispherical shape or a semi-elliptical shape. A plurality of second patterns P2 may be disposed in the second stereoscopic image reflector 35 . The second stereoscopic image reflector 35 has been described as an example of implementing one on the lower surface of the light guide part 30, but may be provided in plural. The plurality of second stereoscopic image reflectors 35 may be disposed in different areas. The plurality of second stereo image reflectors 35 may have the same shape or different shapes.

As shown in FIG. 4 , the second stereoscopic image reflection part 35 has first reflection regions Ra and Rb having the second pattern P2 and a flat part P0 without the second pattern P2. It may include a second reflection region (Rc, Rd) having a. The first reflection regions Ra and Rb in the first stereoscopic image reflector 35 are regions for reflecting light, and may be disposed singly or in plurality.

The plurality of first reflection regions Ra and Rb may be spaced apart from each other or connected to each other. The second reflection regions Rc and Rd in the first stereoscopic image reflector 35 are regions for reflecting light, and may be disposed singly or in plurality. The plurality of second reflection regions Rc and Rd may be spaced apart from each other, adjacent to each other, or connected to each other. The second stereoscopic image reflector 35 includes first reflection regions Ra and Rb to provide illumination and second reflection regions Rc and Rd having shadows based on the outline of the image having a predetermined shape. , and can be placed in each separated location. The first reflective regions Ra and Rb and the second reflective regions Rc and Rd may be mixed and disposed within a predetermined image. Also, one of the first reflective regions Ra and Rb may be disposed closer to the first light emitting diode 11 than the second reflective regions Rc and Rd. Also, the second reflective regions Rc and Rd may be disposed at a position opposite to a direction in which light is incident than any one of the first reflective regions Ra and Rb. That is, it is possible to distinguish between an illuminated area where light is reflected and a shaded area.

A plurality of second patterns P2 may be arranged at regular intervals in the first reflection regions Ra and Rb. The first reflective regions Ra and Rb and the second reflective regions Rc and Rd are disposed within a predetermined image area, and the first reflective regions Ra and Rb and the second reflective regions Rc and Rd ), it is possible to implement a two-dimensional stereoscopic image.

The first reflection regions Ra and Rb reflect the light L1 incident by the second pattern P2 toward the second surface, and the second reflection regions Rc and Rd reflect the incident light L1 in the direction of the second surface. Light may be refracted in a direction other than the direction of the second surface. The second pattern P2 totally reflects the incident light and sends it to the emission side. In this case, a straight line connecting an arbitrary point of the second pattern P2 and the first light emitting diode 11 may be disposed in a range of 30 degrees to 60 degrees with respect to the vertical light L0. Accordingly, the second pattern P2 totally reflects the incident light L1 toward the emission side, and the total reflected light L2 may be an illumination area of a predetermined image.

Since the angles of refraction or reflection of incident light are different from the first reflection regions Ra and Rb and the second reflection regions Rc and Rd, a stereoscopic image may be provided. That is, when viewed from the light guide part 30, the area to which the light reflected by the second reflection areas Rc and Rd is irradiated becomes an illumination area, and the light is emitted through the second reflection areas Rc and Rd. The shaded area may be a shaded area. Accordingly, the light reflected by the second stereo image reflector 35 may be provided as a different image within the area of the first stereo image reflector 32 as shown in FIGS. 7 and 8 .

Referring to FIG. 6 , the second pattern P2 is provided in a lens shape having a convex curved surface, and may have a circular shape or an elliptical shape in a top view. The width (w) of the second pattern (P2) may be in the range of 10 μm to 500 μm, and the depth (h) may be equal to or less than 1/2 of the width (w). The lens pattern may include a rotating body having a two-dimensional curvature.

When the light emitted from the first and second light emitting diodes 11 and 21 of the first and second light emitting modules 10A and 20A is incident, the light guide unit 30 according to an embodiment of the present invention generates a first stereoscopic image. The reflector 32 may provide a three-dimensional image having a linear light source by means of the first pattern P1, and the second stereoscopic image reflector 35 may provide a three-dimensional image with the second pattern P2 and the flat portion. A two-dimensional image having a predetermined image shape may be provided by (P0).

Referring to FIG. 8, HV is the first and second stereoscopic images when the light guide unit 30 is viewed from the front, R30 is the first and second stereoscopic images when viewed from the right 30 degrees, and L30 is the left 30 degrees. The first and second stereoscopic images when viewed from the direction, U20 may be the first and second stereoscopic images when viewed from an upward direction of 20 degrees, and D20 may be the first and second stereoscopic images when viewed from a downward direction of 20 degrees. When viewed from these various positions, the line fluorescence position of the first stereoscopic image is changed, and the shape of the second stereoscopic image can be viewed at a fixed position without change. That is, the first stereoscopic image may be provided as a dynamic image, and the second stereoscopic image may be provided as a static image. The first stereoscopic image may be provided as a 3D image, and the second stereoscopic image may be provided as a 2D image.

According to an embodiment of the invention, through the design of the first pattern (P1) of the stereoscopic image reflecting unit and the second pattern (P2) of the second stereoscopic image reflecting unit (35), headlights, rear lights, vehicle interior lighting, fog lights, It is easy to apply to a vehicle lighting device such as a door scarf, and it is possible to provide a lighting device that is easy to implement a new optical image and inexpensive. That is, according to an embodiment of the present invention, it is possible to provide a new lighting device that is advantageous in terms of volume, thickness, weight, price, lifespan, stability, design freedom, and ease of installation compared to existing vehicle lamps.

Meanwhile, the lighting device according to the embodiment of the present invention is not limited to a vehicle lighting device, and as a flexible lighting device in the form of a film, it can be easily applied to internal and external curved parts or bent parts of lighting installation objects such as buildings, facilities, and furniture. In that case, the outer lens may be disposed on the light guide unit.

In addition, an inner lens and/or an outer lens are disposed on the light guide unit, so that the direct distribution of light or the irradiation direction can be adjusted. An optical member such as a phosphor layer and/or a diffusion layer may be disposed on the light guide unit. The phosphor layer may be a resin layer having a red, green, blue or yellow phosphor, and the diffusion layer may be a resin layer having a diffusion agent for diffusing light.

Features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, and effects illustrated in each embodiment can be combined or modified with respect to other embodiments by those skilled in the art in the field to which the embodiments belong. Therefore, contents related to these combinations and variations should be construed as being included in the scope of the present invention.

In addition, although the above has been described with a focus on the embodiments, these are only examples and do not limit the present invention, and those skilled in the art to which the present invention belongs can exemplify the above to the extent that does not deviate from the essential characteristics of the present embodiment. It will be seen that various variations and applications that have not been made are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention as defined in the appended claims.

10,20: circuit board
10A, 201: light emitting module
11,21: light emitting diode
30: light guide unit
32: first stereoscopic image reflector
35: second stereoscopic image reflector
P1: first pattern
P2: second pattern
P0: flat part

Claims (7)

light emitting diode; and
a light guide unit in which the light emitting diode is disposed on an incident surface;
The light guide part,
a first stereoscopic image reflector including a first pattern on a lower surface of which a plurality of patterns are arranged in a first direction and have a long length in a second direction; and
A lighting module comprising: a first reflective region including a second pattern having a convex curved surface on the lower surface; and a second 3D image reflector including a second reflective region having a flat portion. According to claim 1,
At least one or a plurality of second stereo image reflectors are disposed within an area of the first stereo image reflector. According to claim 1,
A plurality of second patterns having a hemispherical shape are arranged in the first reflection area;
The lighting module is a region in which the first and second patterns are not present in the flat portion. According to claim 1,
The side cross section of the first pattern has a triangular shape,
The side cross-sectional shape of the second pattern is a hemispherical lighting module. According to claim 1,
The first stereoscopic image reflector reflects the incident light to provide a 3D line light source;
The second stereo image reflector reflects the incident light to provide a two-dimensional image different from the image of the first stereo image reflector. According to any one of claims 1 to 4,
The light emitting diode is disposed on at least one or both sides of the light guide part,
A lighting module comprising a circuit board under the light emitting diode. light emitting diode; and
The light emitting diode includes a light guide part disposed on an incident surface,
The light guide part,
a first stereo image reflector for reflecting light incident from the light emitting diode to emit a first stereo image; and a second stereo image reflector for reflecting the incident light to emit a second stereo image;
The first stereoscopic image reflector includes a first pattern in which a plurality of convex portions and concave portions are alternately disposed,
The second stereoscopic image reflector includes a first reflection region having a second pattern in which a plurality of convex portions having a convex curved surface are disposed, and a second reflection region having a flat flat portion,
The first and second reflection areas emit light and sound according to the degree of reflection of light in the second stereoscopic image reflector.

Images