WO2018117494A1

WO2018117494A1 - Lighting device

Info

Publication number: WO2018117494A1
Application number: PCT/KR2017/014267
Authority: WO
Inventors: 김민식; 김진희
Original assignee: (주)코메트; 김민식; 김진희
Priority date: 2016-12-21
Filing date: 2017-12-07
Publication date: 2018-06-28
Also published as: KR101793725B1

Abstract

A lighting device according to an embodiment of the present invention includes: a light source; a reflective plate for reflecting light of the light source; a diffusion plate disposed on the reflective plate to diffuse the light of the light source and the light reflected by the reflective plate; and a patterning part disposed on the diffusion plate and including a plurality of pattern areas, which have patterns that are formed in different directions, and a plane area disposed between the plurality of pattern areas.

Description

Lighting device

The present invention relates to a lighting device.

Lighting devices are used for various purposes such as decorating a space or providing specific information as well as providing a basic function of providing light in a dark place.

As the lighting device is used in various ways as described above, the requirements for the lighting device are also diversified. However, the general lighting device provides only simple patterns or visual feelings to the users.

Accordingly, research is being conducted on lighting devices that can provide various patterns and various visual feelings to people.

The lighting apparatus according to the embodiment of the present invention is to provide various visual feelings to a person.

The problem of the present application is not limited to the above-mentioned problem, another problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

According to one aspect of the invention, the light source; A reflector reflecting light of the light source; A diffusion plate disposed on the reflection plate to diffuse the light of the light source and the light reflected from the reflection plate; And a patterning part disposed on the diffusion plate and including a plurality of pattern areas having a different pattern forming direction and a planar area between the plurality of pattern areas.

The light guide plate may further include a light guide plate disposed between the reflective plate and the diffuser plate, and the light source may be disposed on a side surface of the light guide plate.

The pattern line to which the floor of the pattern is connected or the pattern line to which the valley of the pattern is connected may be curved.

The light blocking part may further include a blue light blocking part disposed between the diffusion plate and the patterning part, and the blue light blocking part may include an adhesive component and a tin component.

The patterning portion may be cured by UV without a Tin component.

The patterning part may include a base part and a pattern layer disposed on the base part, and the pattern layer may include SiO ₂ and TiO ₂ .

The cross section of the pattern may be a triangle, or part of a circle or ellipse.

The cross section of the pattern may include triangles of different shapes or may include portions of circles or ellipses of different curvatures.

Pitches of at least two pattern regions among the plurality of pattern regions may be different from each other.

The lighting apparatus according to the embodiment of the present invention may provide various visual feelings to a person by including a plurality of pattern regions having a different pattern forming direction and a planar region between the plurality of pattern regions.

The effects of the present application are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 and 3 show a lighting device according to an embodiment of the present invention.

2 and 4 show a lighting device according to another embodiment of the present invention.

5 is a view illustrating a patterning unit of a lighting device according to one embodiment and another embodiment of the present invention.

6 shows an embodiment of a lighting device according to embodiments of the present invention.

7 shows a method of manufacturing a lighting device according to embodiments of the present invention.

8 shows pattern lines in the form of straight lines and curves.

9 shows the cross-sectional shape of the pattern.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are only described in order to more easily disclose the contents of the present invention, but the scope of the present invention is not limited to the scope of the accompanying drawings that will be readily available to those of ordinary skill in the art. You will know.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Next, a lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1 and 2 show a lighting device according to one embodiment and another embodiment of the present invention. 1 and 2, the lighting apparatus according to the embodiment of the present invention includes a light source 100, a reflecting plate 200, a diffusion plate 300, and a patterning unit 400.

The light source 100 emits light and may include an LED or a cold cathode lamp (CCFL), but is not limited thereto.

The reflector 200 reflects the light of the light source 100. The light reflected by the reflector 200 may travel toward the diffuser plate 300.

The diffusion plate 300 is disposed on the reflection plate 200 to diffuse the light of the light source 100 and the light reflected from the reflection plate 200. Since light is diffused along the surface of the diffusion plate 300, color and brightness may be uniformly seen on the entire screen. The diffusion plate 300 may be manufactured in the form of maintaining the inclination so as to evenly diffuse using a film form or a high purity acrylic resin.

The patterning unit 400 is disposed on the diffusion plate 300 and includes a planar region between a plurality of pattern regions and a plurality of pattern regions having different patterns forming directions. The patterning unit 400 will be described in more detail later with reference to the drawings.

At this time, as shown in Figure 2, the lighting apparatus according to another embodiment of the present invention may further include a light guide plate (500). In this case, the light guide plate 500 may be disposed between the reflective plate 200 and the diffusion plate 300.

The light source 100 may be disposed on the side surface of the light guide plate 500. Since the light path is changed by the light guide plate 500, the light incident through the side surface of the light guide plate 500 is directed toward the front of the lighting apparatus. Can be.

In this case, as shown in FIG. 1, since the light source 100 is between the reflecting plate 200 and the diffusion plate 300, the light path does not need to be changed, and thus the lighting apparatus according to the exemplary embodiment of the present invention is a light guide plate. It may not include 500.

On the other hand, as shown in Figure 3 and 4, the lighting device according to an embodiment of the present invention and another embodiment of the blue light blocking unit 600 disposed between the diffusion plate 300 and the patterning unit 400. It may further include.

Since blue light has more energy than red or green light, the blue light may adversely affect the human eye. Accordingly, the blue light blocking unit 600 may reduce the effect of blue light on the eyes by removing some or all of the blue light. have.

To this end, the blue light blocking unit 600 may include an adhesive component and a tin component. The tin component may block blue light by absorbing light having a wavelength corresponding to blue from light. The adhesive may allow the diffusion plate 300 and the patterning unit 400 of FIGS. 3 and 4 to be attached to each other. In this case, the adhesive may be an acrylic adhesive, but is not limited thereto.

Next, the patterning unit 400 of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the patterning unit 400 may include a pattern layer 410 disposed on the diffusion plate 300.

As mentioned above, the patterning unit 400 may include a planar region disposed on the diffusion plate 300 and disposed between a plurality of pattern regions having a different pattern formation direction and a plurality of pattern regions.

For example, as illustrated in FIG. 5, a pattern corresponding to an alphabet letter A may be formed, and the pattern corresponding to A may include three

pattern regions

450, 470, and 490. In this case, it can be seen that the directions of the three

pattern regions

450, 470, and 490 are different from each other.

The

pattern regions

450, 470, and 490 may be regions of protruding or recessed surfaces of the pattern layer 410, and may include planar regions having flat surfaces between the

pattern regions

450, 470, and 490.

In FIG. 5, the pattern may be letters or other numbers, symbols, figures, or a combination thereof, but is not limited thereto.

As such, since planar regions exist between the

pattern regions

450, 470, and 490 having different pattern directions, various shapes of patterns may be implemented. Since the pattern directions are different, the patterns may look different depending on the direction in which the person views the patterns. .

That is, the direction in which light is refracted may be different because the pattern formation direction is different, and thus, when a person views the same pattern in different directions, the pattern may be changed.

For example, as illustrated in FIG. 6, when the same pattern is viewed from different directions, when the person is seen from one side and the other side, the person may obtain a visual feeling of seeing different patterns.

Meanwhile, in FIG. 1 and FIG. 2, the pattern portion of the patterning portion 400 is formed on the diffusion plate 300, but as shown in FIGS. 3 and 4, the patterning portion 400 is formed of the base portion 430 and the substrate portion 430. The substrate layer 430 may include a pattern layer 410.

3 and 4, the substrate 430 may be required to form the pattern layer 410 due to the blue light blocking unit 600 including an adhesive.

That is, referring to the process of manufacturing the lighting apparatus according to the embodiment of the present invention of Figure 7, the mold 710 for forming a pattern may be wound on the roller 730. In this case, the mold 710 may have a recessed pattern for forming a protruding pattern or may have a protruding pattern for forming a recessed pattern.

The mold 710 that has been wound as the roller 730 rotates also moves, and the UV curable resin may be supplied onto the multilayer film 750. In this case, the multilayer film 750 may include the remaining portions except for the pattern layer 410 of FIGS. 1 to 4.

When the multilayer film 750 includes the blue light blocking part 600, and the mold 710 presses the UV curable resin injected onto the multilayer film 750 in the absence of the base part 430, an adhesive component is included. The blue light blocking unit 600 may withdraw and the pattern may not be formed accurately.

* Accordingly, when the multi-layer film 750 includes the blue light blocking unit 600, the base unit 430 is disposed on the blue light blocking unit 600, and the UV curable resin is supplied onto the base unit 430. Mold 710 may form a pattern on the UV curable resin.

Since the UV curable resin hardens when UV is irradiated, the multilayer film 750 in which the pattern portion is formed is separated from the mold 710, and the separated multilayer film 750 is wound on a rewinder 770.

On the other hand, the pattern layer 410 may include SiO ₂ and TiO _2. SiO ₂ and TiO ₂ may be used to control the refractive index of the pattern layer 410. The refractive index of the pattern layer 410 may vary depending on the mixing ratio of SiO ₂ and TiO ₂ , and the mixing ratio may vary depending on design conditions in the manufacturing process.

8 shows pattern lines in the form of straight lines and curves. As shown in FIG. 8, the pattern line connected with the floor of the pattern or the pattern line connected with the valley of the pattern may be curved. When the pattern line is curved, the refraction of light is irregular as compared to the pattern line in a straight line, thereby providing various visual feelings to a person.

As described above, the blue light blocking unit 600 may include a tin component to remove a specific wavelength component of light. Unlike the embodiment of the present invention, when the pattern portion includes a Tin component to block the blue light without the blue light blocking portion 600, the blue portion may be blocked by the pattern portion, but for the curing of the pattern layer 410 in the manufacturing process. Since the Tin component absorbs the irradiated UV, curing of the pattern portion may not be performed smoothly.

Accordingly, in the case of the lighting apparatus according to the embodiment of the present invention, the patterning unit 400 may be cured by UV without the Tin component.

On the other hand, as shown in Figure 9, the cross section of the pattern may be a triangle, or a portion of a circle or ellipse. In this case, a pattern having a cross section or part of an ellipse may perform the function of a lenticular lens.

In this case, the cross-section of the pattern may include triangles of different shapes or may include portions of circles or ellipses having different curvatures. For example, as illustrated in FIG. 9, in the case of a triangular pattern cross section, the inner angles of the triangle may be different, and accordingly, the pitches P1 and P2 of the pattern may vary. In addition, when the cross section of the pattern is part of a circle or ellipse, the curvature of the circle or ellipse may be different, and the distance between the patterns having the cross section of the circle or ellipse shape may also be different.

Accordingly, pitches of at least two pattern regions among the plurality of

pattern regions

450, 470, and 490 may be different from each other. For example, in FIG. 5, the pitches of the pattern region 450 and the pattern region 470 may be different from each other.

As such, since the cross-sectional shape of the pattern may vary, the refraction of the light may also vary, thereby providing various visual effects to the person who views the lighting apparatus according to the embodiment of the present invention.

As described above, the embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope of the present invention can be embodied by those skilled in the art. It is self-evident to. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

Claims

Light source;

A reflector reflecting light of the light source;

A diffusion plate disposed on the reflection plate to diffuse the light of the light source and the light reflected from the reflection plate; And

A patterning part disposed on the diffusion plate, the patterning part including a plurality of pattern areas having a different pattern direction in which a floor of a pattern is connected or a pattern line in which a valley of the pattern is connected, and a planar area between the plurality of pattern areas; ,

Further comprising a blue light blocking unit disposed between the diffusion plate and the patterning unit,

The patterning portion includes a substrate portion disposed on the blue light blocking portion, and a pattern layer disposed on the substrate portion,

The blue light blocking unit comprises an adhesive component and a tin component.
The method of claim 1,

Further comprising a light guide plate disposed between the reflecting plate and the diffusion plate,

And the light source is disposed on a side of the light guide plate.
The method of claim 1,

The pattern line is a lighting device, characterized in that the curve.
The method according to claim 1 or 2,

The patterning unit is a lighting device, characterized in that cured by UV without Tin component.
The method of claim 1,

The patterning layer is a lighting device, characterized in that containing SiO 2 and TiO 2 .
The method of claim 1,

Illumination device, characterized in that the cross section of the pattern is a triangle, or part of a circle or ellipse.
The method of claim 6,

The cross section of the pattern includes a triangle of different shapes, or a lighting device, characterized in that it comprises a portion of a circle or ellipse of different curvature.
The method of claim 1,

And a pitch of at least two pattern regions of the plurality of pattern regions are different from each other.