KR102679946B1 - Lighting apparatus - Google Patents

Abstract

A lighting device according to an embodiment of the present invention includes a film unit in which a plurality of micro lenses having a three-dimensional pattern are arranged, a light source unit that turns on light irradiated in a plurality of directions, and a light source unit that guides the light irradiated from the light source unit to the film unit. Includes a light source guide unit.
At this time, the light source guide unit includes first and second light guides that are stacked and spaced apart from the film unit and have optical patterns of different shapes.

Description

lighting device{LIGHTING APPARATUS}

The present invention relates to a lighting device that can be applied to the interior of a vehicle and provide a dynamic lighting effect through the implementation of a three-dimensional pattern.

Emotional lighting is being widely used in recent vehicle interiors. General emotional lighting uses an indirect lighting method in which light leaks through gaps between parts, or a direct lighting method that illuminates microscopic holes on the exterior.

Such emotional lighting stimulates the user's emotions and has a positive effect on physiological and cognitive aspects. It also has a function that helps users improve their quality of life and satisfaction through an optimal lighting experience.

As such, the trend these days is for the function of lighting to gradually include aesthetic and emotional functions beyond simply illuminating light.

As part of that trend, recent vehicle interior lighting devices are developing in various ways to apply next-generation slim cockpit designs.

In particular, vehicle interior lighting devices are evolving beyond the existing two-dimensional lighting to point, line, and surface shapes, and research and development on three-dimensional lighting is currently being actively conducted in this field.

However, the conventional three-dimensional lighting has a complicated structure, which has the problem of increasing manufacturing costs. Moreover, there is a problem that complexity increases in order to provide a dynamic effect.

The present invention was proposed to solve the above-mentioned problems, and its purpose is to provide a lighting device that can express a three-dimensional shape with a simple structure.

Furthermore, the aim is to provide a lighting device that can implement a dynamic effect by stacking light guides with various optical patterns and lighting a plurality of lights in various shapes.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

The lighting device according to the first embodiment of the present invention includes a film unit in which a plurality of micro lenses having a three-dimensional pattern are arranged, a light source unit that turns on light irradiated in a plurality of directions, and a light source unit that guides the light irradiated from the light source unit to the film unit. Includes a light source guide unit.

The light source guide unit includes first and second light guides that are stacked and spaced apart from the film unit and have optical patterns of different shapes.

A lighting device according to a modification of the first embodiment of the present invention includes an exterior panel forming an exterior, a film portion spaced apart from the exterior panel, a light source unit that turns on a plurality of lights irradiated toward the film unit, and a light source unit that illuminates a plurality of lights irradiated from the light source unit. It includes a light guide that guides light to the film unit.

Here, the light guide is made of a single layer and has different optical patterns along the length direction.

The lighting device according to the second embodiment of the present invention includes a film unit in which a plurality of micro lenses having a three-dimensional pattern are arranged, a light source unit having first and second light sources, guides the light path of the light source unit, and provides a light source unit between the film unit and the light source unit. A light source guide unit including first and second light guides stacked spaced apart from each other and having optical patterns of different shapes, and disposed on top of the first and second light guides to selectively transmit light from the light source unit. It includes a filter part that reflects.

Here, the filter unit may be an optical filter that transmits only light having a wavelength of a certain band to the film unit.

A lighting device according to a third embodiment of the present invention includes a film unit having a micro lens having a three-dimensional pattern, a light source unit that irradiates a plurality of lights in alternating directions, a light source guide unit that guides the light path of the light source unit, and a film unit. and a position control unit that adjusts the spacing of the light source guide unit and the position of the light source guide unit.

Here, the light source guide unit has a structure in which first and second light guides providing different light paths are stacked with each other spaced apart.

A lighting device according to a fourth embodiment of the present invention includes an exterior panel forming an exterior, a film portion spaced apart from the bottom of the exterior panel, a light source portion including a plurality of light sources that irradiate light at different positions, and a film portion. It includes a light guide disposed between the light source unit and the light source unit to guide the light path of the light source unit. At this time, the light source is disposed on the side and bottom of the light guide, respectively, and can be selectively lit.

According to the present invention, a lighting device can implement a three-dimensional shape with a simple structure, and can also implement a dynamic effect by stacking light guides with optical patterns of various shapes and turning on a plurality of lights in various orders.

In addition, the present invention can help users (including drivers, passengers, etc.) feel a sense of psychological stability as well as aesthetics, thereby enabling safe driving when driving a vehicle (especially when driving at night).

1 is a diagram showing a three-dimensional lighting effect applied through a lighting device according to an embodiment of the present invention.
Figure 2 is a diagram for explaining the setting of an influence factor of an optical prism sheet in a lighting device according to an embodiment of the present invention.
FIG. 3 is a diagram showing a pattern image for each influencing factor of the optical prism sheet shown in FIG. 2.
Figure 4 is a cross-sectional view schematically showing a lighting device according to a first embodiment of the present invention.
Figure 5 is a cross-sectional view schematically showing the lighting of the first light source in the lighting device according to the first embodiment of the present invention.
Figure 6 is a cross-sectional view schematically showing the lighting of the second light source in the lighting device according to the first embodiment of the present invention.
7 to 9 are cross-sectional views schematically showing a modified example of the lighting device according to the first embodiment.
10 and 11 are cross-sectional views schematically showing a lighting device according to a second embodiment of the present invention.
12 to 15 are cross-sectional views schematically showing a modified example of a lighting device according to a second embodiment of the present invention.
Figure 16 is a cross-sectional view schematically showing a lighting device according to a third embodiment of the present invention.
17 to 25 are cross-sectional views schematically showing a modified example of a lighting device according to a third embodiment of the present invention.
26 and 27 are cross-sectional views schematically showing a lighting device according to a fourth embodiment of the present invention.
28 to 30 are cross-sectional views schematically showing a modified example of a lighting device according to a fourth embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the invention is defined by the claims. Meanwhile, the terms used in this specification are for describing embodiments and are not intended to limit the present invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises” or “comprising” means the presence or presence of one or more other components, steps, operations and/or elements other than the mentioned elements, steps, operations and/or elements. Addition is not ruled out.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a diagram showing a three-dimensional lighting effect applied through a lighting device according to an embodiment of the present invention.

The lighting device 100 in FIG. 1 can be installed inside a vehicle to implement various three-dimensional patterns.

The recent vehicle market is making efforts to slim down each structure in order to apply the next-generation slim cockpit design. This is not simply an effort to improve the design, but a part of reducing the unit cost of the product and creating a better environment. In line with this, the patterns of lighting devices in vehicle interiors that provide drivers with psychological stability are becoming more diverse.

The lighting device 100 according to various embodiments of the present invention can deviate from the existing two-dimensional form and implement a three-dimensional pattern that provides a sense of depth.

This allows users (including drivers, passengers, etc.) to feel a sense of psychological stability as well as aesthetics, and can assist in safe driving when driving the vehicle (especially when driving at night).

Figure 2 is a diagram for explaining the setting of influence factors of an optical prism sheet in a vehicle interior lighting device according to an embodiment of the present invention, and Figure 3 is a pattern image for each influence factor of the optical prism sheet shown in Figure 2. This is a drawing showing .

As shown in Figures 2 and 3, the influencing factors of the optical prism sheet (film part; 110) are the 3D lighting pattern image length (A), the horizontal width of the lighting area (light source part; 120) (B), and the vertical width of the lighting area. (C), air gap (D) and 3D pattern image depth (E) are shown.

The 3D lighting pattern image length (A) refers to the left and right lengths of the light source 3D design image that passed through the film unit 110.

The horizontal width (B) of the light source unit 120 refers to the horizontal width of the lighting area projected onto the film unit 110.

The vertical width (C) of the light source unit 120 refers to the vertical width of the lighting area projected onto the film unit 110.

The air gap (D) refers to the distance between the light source unit 120 and the film unit 110, and refers to the distance from the end of the light projected on the film unit 110 to the light source unit 120.

As can be seen in FIG. 3, the larger the horizontal width (B) and air gap (D) of the light source unit 120, the larger the 3D lighting pattern image length (A). At this time, the vertical width (C) of the light source unit 120 does not have a significant effect on the clarity of lighting.

In this way, the present invention can implement 3D lighting of a predetermined pattern with a relatively simple structure, and can further provide a dynamic effect to the projected three-dimensional pattern. Hereinafter, each embodiment of a 3D lighting device that exerts a dynamic effect will be described in detail.

Embodiment 1

Figure 4 is a cross-sectional view schematically showing a lighting device according to a first embodiment of the present invention, and Figures 5 and 6 are diagrams for explaining how the first light source and the second light source alternately light up to exert a dynamic effect. am.

As shown in FIGS. 4 to 6 , the lighting device 100 includes a film unit 110, a light source unit 120, a light source guide unit 130, and an exterior panel 140.

The film unit 110 is an optical prism sheet and is composed of a plurality of micro lenses 111 having a three-dimensional pattern arranged in a plurality. At this time, the microlens 111 may have a different three-dimensional pattern for each section of the film unit 110. A photosensitive emulsion may be formed on the base surface of the film unit 110.

The light source unit 120 is made of an LED that irradiates light in multiple directions. This light source unit 120 sequentially turns on light irradiated in multiple directions. As another example, the light source unit 120 may turn on light irradiated in a plurality of directions simultaneously or at different times.

The light source unit 120 is disposed on the side of the light source guide unit 130 and irradiates light toward the exterior panel 140 via the film unit 110. Here, the film unit 110 may be partially made of an optical prism sheet only in a specific section through which light emitted from the light source unit 120 is transmitted. The light source unit 120 includes a first light source 121 and a second light source 122 that emit light from different positions.

The light source guide unit 130 guides the light path of the light source unit 120 so that the light emitted from the light source unit 120 passes through the film unit 110 to the exterior panel 140. This light source guide unit 130 includes a first light guide 131 and a second light guide 132 that are stacked spaced apart between the film unit 110 and the light source unit 120.

The first light guide 131 has a first optical pattern 131a at its bottom, and the second light guide 132 has a second optical pattern 132a at its bottom. Here, the first optical pattern 131a and the second optical pattern 132a may have the same shape or different shapes, and may also have an irregular structural pattern.

The first optical pattern 131a and the second optical pattern 132a guide the light emitted from the light source unit 120 to the top of the first light guide 131 and the second light guide 132.

At this time, the first optical pattern 131a and the second optical pattern 132a have upper surfaces divided into multiple angles, so that the angle of light emitted from the light source unit 120 can be shifted.

The first optical pattern 131a and the second optical pattern 132a are formed in a section where light paths do not overlap each other. The reason is that a plurality of lights must be reflected by the first optical pattern 131a and the second optical pattern 132a and implemented at different positions to exert a dynamic effect.

For example, when light emitted from the first light source 121 is reflected by the first optical pattern 131a and then passes through the film unit 110, a first shape (star, semicircle, etc.) is three-dimensionally expressed at a predetermined position. At the same time, when the light irradiated from the second light source 122 is reflected by the second optical pattern 132a and then passes through the film unit 110, a second shape (star, semicircle, etc.) is three-dimensionally formed at a position different from the first shape. It is expressed.

Here, the film unit 110 directs multicolor light irradiated from the first and second light sources 121 and 122 of the light source unit 120 and passing through the first light guide 131 and the second light guide 132 from a specific section to the top. It can be transmitted and split into each monochromatic light.

Meanwhile, when the first light source 121 and the second light source 122 light up alternately, the first shape (e.g., a star) and the second shape (e.g., a semicircle) alternate as shown in FIGS. 5 and 6. Because it is expressed, the present invention can provide a dynamic visual effect to the user. The lighting patterns of the first light source 121 and the second light source 122 may be various arbitrary patterns other than alternating.

Here, the first shape and the second shape may be different as shown in FIGS. 4 and 5, or may be the same shape.

In the case of the same shape, the user can see the effect of the shape flowing to the left or right according to the lighting pattern of the first light source 121 and the second light source 122, or feel the flow of irregular waves or waves. .

The first and second light sources 121 and 122 may be surface light sources using an organic electro luminescence display (EL).

The first light source 121 is capable of irradiating light in multiple directions toward the first optical pattern 131a, and the second light source 122 is capable of irradiating light in multiple directions toward the second optical pattern 132a. do.

Here, the light reflected by the first optical pattern 131a and the second optical pattern 132a passes through the first light guide 131 and the second light guide 132 and is split by the film unit 110. At this time, the first light guide 131 transmits light that has passed through the second light guide 132 to the film unit 110.

The exterior panel 140 is a panel that forms the exterior exposed on the front of the front seat in the vehicle.

Since this exterior panel 140 is a part that the user actually touches, it may be made of a transparent or translucent material. At this time, the exterior panel 140 is made of a material that gradually transmits light from one side to the other along the length direction, and can create more diverse and aesthetic dynamic effects.

Modification of the first embodiment

7 to 9 are cross-sectional views schematically showing a modified example of the lighting device according to the first embodiment.

Referring to FIGS. 7 to 9 in parallel, the lighting device 100 includes one light guide 180 disposed below the film unit 110, and first light sources 121 at both sides of the light guide 180. and a second light source 122 are disposed.

The light guide 180 is made of a single layer and has optical patterns 181 and 182 of different shapes along the length direction. The optical patterns 181 and 182 are arranged at intervals and are formed at the bottom of the light guide 180.

The first light source 121 and the second light source 122 radiate light in a plurality of directions at a time difference so as to pass through the optical patterns 181 and 182 at both ends of the side of the light guide 180.

The first light source 121 and the second light source 122 are reflected from the top of the light guide 180, and the bending angle of the light irradiated to the optical patterns 181 and 182 is an obtuse angle.

Second embodiment

10 and 11 are cross-sectional views schematically showing a lighting device according to a second embodiment of the present invention.

Referring to FIGS. 10 and 11 in parallel, the lighting device 100 in the second embodiment is configured to include a filter unit 170.

The filter unit 170 selectively transmits or reflects light from the light source unit 120 toward the film unit 110 through the first light guide 131 and the second light guide 132.

Here, the filter unit 170 is an optical filter that transmits only light having a wavelength of a certain band, and includes a first optical filter 171 and a second optical filter 172.

The first optical filter 171 is placed at the top of the first light guide 131, and the second optical filter 172 is placed at the top of the second light guide 132.

The first optical filter 171 and the second optical filter 172 selectively transmit or reflect only light having a wavelength in a certain band.

The light source unit 120 in the second embodiment implements a dynamic effect by selectively turning on light. In particular, the light source unit 120 can produce a dynamic effect by alternately lighting light irradiated in a plurality of directions. This light source unit 120 includes a first light source 121 and a second light source 122 having different wavelengths.

At this time, the first light source 121 of the light source unit 120 is placed on the side of the first light guide 131, and the second light source 122 is placed on the side of the second light guide 132.

Here, the first light source 121 and the second light source 122 may irradiate light alternately with a time difference.

The light source unit 120 has bending angles (a, b) of light reflected from the first and second light filters 171 and 172 determined according to the thickness of the first and second light guides 131 and 132.

Here, the first light guide 131 and the second light guide 132 have a thickness such that the bending angles (a, b) of the light reflected from the first optical filter 171 and the second optical filter 172 are obtuse angles. It is desirable to have it.

If the bending angles (a, b) of light are acute, the thickness of the first and second light guides 131 and 312 cannot help but become thicker. This is also undesirable in terms of manufacturing cost. Therefore, it is better for the bending angles (a, b) of light to be obtuse angles.

The exterior panel 140 forms the exterior and may have micro holes (not shown) of different shapes along the length direction. This exterior panel 140 may be made of a material that gradually transmits light from one side to the other along the length direction.

The exterior panel 140 may be surface-treated with a non-transmissive material around the microholes.

A cover member (not shown) may be disposed on the surface of the exterior panel 140 to cover the micro holes. At this time, it is good for the cover member to have a micro hole and a predetermined gap.

The exterior panel 140 may be formed by alternating transparent and translucent materials along the length direction. Additionally, the exterior panel 140 may be made of a light-transmissive material that has different colors for each section.

Modification of the second embodiment

12 to 15 are cross-sectional views schematically showing a modified example of a lighting device according to a second embodiment of the present invention.

First, referring to FIG. 12, the filter unit 170 is disposed at the bottom of the film unit 110. At this time, the filter unit 170 selectively selects the light irradiated from the first light source 121 and passed through the first light guide 131, and the light irradiated from the second light source 122 and passed through the second light guide 132. It can be transmitted through.

Here, the filter unit 170 may be configured to be detachable from the bottom of the film unit 110. It is preferable that the filter unit 170 is spaced apart from the first light guide 131 by a certain distance.

Next, referring to FIGS. 13 to 15 in parallel, the lighting device 100 includes one light guide 180 spaced apart from the lower portion of the film unit 110, and first light sources at both sides of the light guide 180. (121) and the second light source 122 are disposed.

The light guide 180 is made of a single layer and has optical patterns 181 and 182 of different shapes along the length direction. The optical patterns 181 and 182 are arranged at intervals and are formed at the bottom of the light guide 180.

The first light source 121 and the second light source 122 radiate light in a plurality of directions at a time difference so as to pass through the optical patterns 181 and 182 at both ends of the side of the light guide 180.

The filter unit 170 is disposed at the top of the light guide 180 and selectively transmits light that has passed through the optical patterns 181 and 182 of the light guide 180.

At this time, the filter unit 170 may transmit the light emitted from the first light source 121 and the second light source 122 with a constant transmittance regardless of the wavelength.

As another example, the filter unit 170 may be used as a correction filter that adjusts the intensity of light emitted from the first light source 121 and the second light source 122 to a specific wavelength region.

Third embodiment

Figure 16 is a cross-sectional view schematically showing a lighting device according to a third embodiment of the present invention.

As shown in FIG. 16, the lighting device 100 in the third embodiment includes a film unit 110, a light source unit 120, a light source guide unit 130, an exterior panel 140, and a position adjusting unit 150. Includes.

Among the above configurations, content that overlaps with the first and second embodiments will be omitted.

The light source unit 120 in the third embodiment is disposed on the side of the first light guide 131 and the second light guide 132, respectively, and includes the first light source 121 and the second light source 120 that irradiate light in a plurality of directions. Includes a light source 122.

The first light source 121 and the second light source 122 are disposed on one side of the first light guide 131 and the second light guide 132, respectively. The first light source 121 and the second light source 122 alternately emit light toward the first and second optical patterns 131a and 132a provided in the first and second light guides 131 and 132, thereby realizing a dynamic effect. do.

At this time, the first light source 121 and the second light source 122 have a rotatable structure, so that more diverse dynamic effects can be realized by adjusting the light irradiation angle.

A gap L1 between the film unit 110 and the first light guide 131, a gap L2 between the film unit 110 and the second light guide 132, and the first light guide 131 and the second light guide. The spacing (L3) between (132) is spaced apart from each other.

As the distance between the second light source 122 and the film unit 110 increases, the light irradiation angle of the second light source 122 widens. Accordingly, various dynamic effects can be realized by varying the irradiation angle of light simply by adjusting the distance between the light source unit 120 and the film unit 110.

The position adjusting unit 150 can adjust the distance between the film unit 110 and the light source guide unit 130 and the left and right positions of the light source guide unit 130.

This position control unit 150 can adjust the distance between the light source unit 120 and the film unit 110 to preset conditions by raising and lowering the light source guide unit 130. In addition, the position adjusting unit 150 may selectively raise and lower the first light guide 131 and the second light guide 132 to adjust the distance between the light source unit 120 and the film unit 110 to preset conditions. there is. Here, the preset condition refers to a preset interval that can provide a dynamic effect projected on the film unit 110.

The position adjusting unit 150 can simultaneously move the first light guide 131 and the second light guide 132 left and right, or cross them and move them left and right.

The position adjusting unit 150 adjusts the distance between the film unit 110 and the light source guide unit 130 to satisfy the preset light irradiation range condition of the light source unit 120.

Here, the preset light irradiation range condition means an optimal environmental setting value determined according to the distance between them.

Accordingly, the preset light irradiation range conditions may be appropriately changed depending on the shape and structure of the film unit 110 and the light source unit 120.

The exterior panel 140 in the third embodiment may be made of a light-transmitting material with different colors for each section. Accordingly, the light passing through the film unit 110 can be expressed in various colors through different colors for each section, thereby demonstrating a dynamic effect.

Modification of the third embodiment

17 to 25 are cross-sectional views schematically showing a modified example of a lighting device according to a third embodiment of the present invention.

Referring to FIG. 17, the lighting device 100 may implement a dynamic effect by additionally configuring a sensor unit 190 and a control unit 200.

The sensor unit 190 is disposed around the exterior panel 140 and detects the position of the corresponding section of the exterior panel 140 when an external object contacts or approaches the exterior panel 140. Here, the external object includes the user's hand or an object that may be close to or in contact with the exterior panel 140.

The sensor unit 190 may be a contact or non-contact proximity sensor disposed at intervals on the exterior panel 140.

The control unit 200 compares the data value sensed from the sensor unit 190 with a preset reference value and adjusts the irradiation angle of the light source unit 120 according to the result. That is, the control unit 200 can control not only the irradiation angle and driving of the light source unit 120 but also the driving of the position adjusting unit 150 according to a predetermined control logic. Here, the control unit 200 may be an ECU (Electronic Control Unit) that controls all electronic components within the vehicle.

The light source unit 120 and the position control unit 150 may be switched to manual control mode when the data value sensed from the sensor unit 190 is not transmitted to the control unit 200 for a certain period of time. That is, the initial setting of the light source unit 120 and the position control unit 150 is the automatic control mode, and if there is a data value detected by the sensor unit 190 according to the approach of an external object, the data value is used using control logic. Thus, the irradiation angle of the light source unit 120 is automatically adjusted.

For example, when a user touches the exterior panel 140 directly or makes a hand gesture in close proximity, the lighting method of the light source unit 120 can be dynamically implemented by lighting or blinking separately in the corresponding section.

When the rotation angle of the light source unit 120 is adjusted by the control unit 200, the light source unit 120 can produce a dynamic effect by turning on a plurality of lights alternately for a certain period of time.

The lighting device 100 in FIG. 18 has a filter unit 170 added between the gap L1 between the film unit 110 and the first light guide 131.

The filter unit 170 may selectively transmit light irradiated from the light source unit 120 and passing through the light source guide unit 130 only to a certain wavelength or a certain section.

In the lighting device 100 in FIGS. 19 and 20, the first light source 121 is disposed on one side of the light source guide unit 130, and the second light source 122 is disposed on the other side of the light source guide unit 130. . At this time, the directions in which light is emitted from the first light source 121 and the second light source 122 are opposite to each other.

The first light source 121 and the second light source 122 alternately radiate light within a range that does not overlap with each other, or irradiate light in a different predetermined pattern.

The position adjusting unit 150 can adjust the positions of the first light guide 131 and the second light guide 132 in the longitudinal direction (left and right directions).

The lighting device 100 in FIG. 21 is configured so that the sensor unit 190 and the control unit 200 are added, and the first light source 121 and the second light source 122 are disposed at opposite positions. . In this case, the lighting device 100 implements the desired dynamic effect through manual operation, and at the same time, when the user touches the exterior panel 140 or approaches within the setting range, the light source unit 120 turns on at the corresponding position to automatically display the desired effect. You can also add dynamic effects.

The lighting device 100 in FIG. 22 is arranged in a position where the first light source 121 and the second light source 122 face each other with the light source guide part 130 in between, and the film part 110 and the first light source 122 are positioned opposite to each other. It is configured to include a filter unit 170 that selectively filters light between the gaps L1 of the light guide 131.

The lighting device 100 in FIGS. 23 to 25 has a structure in which the light guide 180 made of a single layer has its position adjusted by the position adjusting unit 150, and a sensor unit 190 and a control unit 200 are added. It has a form that can implement dynamic effects. Since the driving mechanism related to this has been described above, detailed description will be omitted.

Embodiment 4

26 and 27 are cross-sectional views schematically showing a vehicle interior lighting device according to a fourth embodiment of the present invention.

First, the lighting device 100 shown in FIG. 26 includes an exterior panel 140, a film unit 110, a light source unit 120, a holder 160, and a light guide 180.

The exterior panel 140 is made of a material that gradually transmits light from one side to the other along the length direction so that the user can visually experience a colorful and dynamic effect.

The film portion 110 is disposed at a preset distance apart from the lower portion of the exterior panel 140. Here, the preset interval refers to an interval based on a data value that can implement the 3D lighting of the predetermined pattern described above in FIG. 3 and further provide a dynamic effect to the projected three-dimensional pattern.

This film unit 110 has a plurality of micro lenses 111 arranged in different three-dimensional patterns for each section, and is made of an optical prism sheet.

The light source unit 120 includes a plurality of light sources that radiate light from different positions, that is, first, second, third, and fourth light sources 121, 122, 123, and 124. The first, second, third, and fourth light sources 121, 122, 123, and 124 can be selectively lit.

The first and second light sources 121 and 122 are respectively disposed on both sides of the light guide 180 and radiate light toward the ride guide 180. The light irradiation portions of the first and second light sources 121 and 122 are located opposite to each other. Here, the first and second light sources 121 and 122 may be arranged at different heights.

The third and fourth light sources 123 and 124 are spaced apart from the lower part of the light guide 180 and radiate light toward the top.

The holder 160 is spaced apart from the lower part of the light guide 180 and connects the third and fourth light sources 123 and 124 to the upper part. Here, the third and fourth light sources 123 and 124 can be moved on the holder 160 along the longitudinal direction of the holder 160.

At this time, a hinge axis (not shown) connected to the third and fourth light sources 123 and 124 is disposed on the upper surface of the holder 160. Through this hinge axis, the third and fourth light sources 123 and 124 can be rotated left and right, thereby creating a more realistic and dynamic visual effect.

The light guide 180 has a single-layer structure. Optical patterns 181 and 182 of different shapes are provided at the bottom of the light guide 180 at intervals along the length direction.

The light guide 180 is arranged to be spaced apart from the lower part of the film unit 110 by a preset distance. Here, the preset interval refers to the optimal interval that satisfies the light source range and clarity and can be changed depending on the situation.

Modification of the fourth embodiment

28 to 30 are cross-sectional views schematically showing a modified example of a lighting device according to a fourth embodiment of the present invention.

The lighting device 100 in FIGS. 28 to 30 includes a light source unit 120, a film unit 110, and an exterior panel 140.

In a modified example of the fourth embodiment of the present invention, the light source unit 120 is disposed below the film unit 110 and radiates light without light refraction. In other words, this light source unit 120 directly implements the design pattern through the point light source function.

At this time, since the spacing (L) between the light source unit 120 and the film unit 110 is an important factor in determining the light source range and clarity, if it can be adjusted appropriately according to the situation, a three-dimensional pattern can be more effectively implemented. .

The film unit 110 may be configured to be adjustable up and down. At this time, the film unit 110 is connected to a separate transfer device (not shown) and can be operated by a module (not shown) that controls it.

Meanwhile, the light source unit 120 has a preset height difference (gap; L) with the film unit 110 to implement a light irradiation range (light source range) and a dynamic effect.

Here, the preset height difference refers to the optimal height difference that satisfies the light source range and clarity, and can be appropriately changed depending on the shape and structure of the light source unit 120 and the film unit 110.

According to the basic form of the present invention, the light source units 120 are arranged at intervals in the horizontal direction. However, the light source unit 120 may be arranged at different heights depending on the conditions for changing the light source range and clarity as described above.

The lighting device 100 in FIGS. 28 to 30 has a structure in which the film unit 110 is fixed and the holder 160 on which the light source unit 120 is mounted moves up and down.

Here, the holder 160 connects the light source unit 120 so that it can be slidably moved in the horizontal direction.

The lighting device 100 in FIGS. 28 and 29 has a structure in which the holder 160 is raised and lowered, and the irradiation angle of the light source unit 120 is changed. That is, the light source unit 120 may be hinged from the holder 160 and may be configured to rotate left and right.

At this time, the light source unit 120 can irradiate light at various angles toward the film unit 110, allowing the user to feel more diverse three-dimensional patterns of lighting.

In the lighting device 100 shown in FIG. 30, the height of the holder 160 is adjusted up and down around the center, so that the height of both ends can be adjusted. In addition, a filter unit 170 that selectively transmits or reflects light emitted from the light source unit 120 may be additionally provided at the lower portion of the film unit 110.

At this time, the filter unit 170 may transmit only light having a wavelength in a certain band, or may transmit light emitted from the light source unit 120 with a constant transmittance regardless of the wavelength.

The present invention is not limited to the above-described embodiments, and can be implemented with various modifications within the scope permitted by the technical idea of the present invention.

100: lighting device
110: film unit 111: micro lens
120: light source unit 121: first light source
122: second light source 123: third light source
124: fourth light source 130: light source guide unit
131: first light guide 131a: first optical pattern
132: second light guide 132a: second optical pattern
140: Exterior panel 150: Position control unit
160: Holder 170: Filter unit
171: first optical filter 172: second optical filter
180: Light guide 181, 182: Optical pattern
190: sensor unit 200: control unit

Claims (15)

a film unit in which a plurality of micro lenses having a three-dimensional pattern are arranged;
a light source unit including first and second light sources that selectively irradiate light in a plurality of directions at positions spaced apart from each other on a vertical line; and
A light source guide unit that guides light emitted from the first and second light sources of the light source unit to the film unit,
The light source guide part
It includes first and second light guides that are stacked in a state spaced apart from the film unit and have first and second optical patterns of different shapes so that the light emitted from the first and second light sources is reflected in sections that do not overlap each other. A lighting device that does this.
According to paragraph 1,
The first light guide is
A lighting device that transmits light that has passed through the second light guide to the film portion.
According to paragraph 1,
The first and second light sources are
A lighting device that irradiates light toward the first and second optical patterns, respectively.
According to paragraph 3,
The film section
A lighting device wherein when the light irradiated from the first and second light sources and reflected by the first and second optical patterns, respectively, passes through the first and second light guides, the light is split.
According to paragraph 1,
The first and second light sources are
A lighting device disposed on each side of the first and second light guides to irradiate light in a plurality of directions.
According to paragraph 1,
The first and second light sources are
A lighting device capable of irradiating light in a plurality of directions toward the first and second light guides, and lighting the light sequentially with a time difference.
According to paragraph 1,
The film section
A lighting device that is partially made of an optical prism sheet only in a specific section through which light emitted from the first and second light sources is transmitted.
According to paragraph 3,
The first and second optical patterns are
A lighting device whose top is made of a surface divided into multiple angles to shift the angle of light emitted from the first and second light sources.
According to paragraph 1,
The light source unit irradiates multicolor light toward the first and second light guides,
The film section
A lighting device comprising an optical prism sheet that splits multicolor light emitted from the light source unit in a specific section into individual monochromatic lights.
Facade panels forming the exterior;
a film portion spaced apart from the exterior panel;
a light source unit including first and second light sources that rotate at a specific angle at positions spaced apart from each other and selectively irradiate light in a plurality of directions; and
It includes a light guide that guides the light emitted from the first and second light sources to the film unit,
A lighting device wherein the light guide is made of a single layer and has optical patterns of different shapes along the length direction.
According to clause 10,
The film section
A lighting device consisting of a plurality of fine lenses having different three-dimensional patterns for each section.
According to clause 10,
The film section
A lighting device comprising optical prism sheets having different three-dimensional patterns.
According to clause 10,
The exterior panel is
A lighting device made of a material that emits light in stages from one side to the other along the length direction.
According to clause 10,
The first and second light sources are
A lighting device that irradiates light in a plurality of directions with time differences so that it passes through the optical pattern from both side ends of the light guide.
According to clause 14,
The first and second light sources are
A lighting device wherein the bending angle of the light reflected from the top of the light guide and irradiated to the optical pattern is an obtuse angle.