KR102365959B1 - Multi color lighting apparatus - Google Patents

Abstract

A multicolor lighting device according to an exemplary embodiment of the present invention includes: a frame having an inner space and open to expose the inner space; a plurality of light source modules mounted on the bottom of the frame and placed in the inner space, the plurality of light source modules including a substrate and a plurality of LEDs mounted on the substrate and configured to generate light of different colors; a blocking film disposed between the plurality of light source modules to spatially separate the light source modules; and a diffusion plate covering the inner space to protect the light source module and the blocking film, and emitting the light generated by the light source module to the outside, wherein the blocking film protrudes from the light source module toward the diffusion plate, A color crossing space having a separation distance is provided between the protruding front end of the blocking layer and the diffusion plate, and the blocking layer may have a trapezoidal cross-sectional structure in which a cross-sectional thickness decreases toward the front end.

Description

Multicolor lighting device {MULTI COLOR LIGHTING APPARATUS}

The present invention relates to a multicolor lighting device.

A lighting device is installed for lighting not only on the exterior wall of a building but also on the ceiling of an office or home. In such a lighting device, an LED is mounted as a light source, and a diffusion plate made of a light-transmitting material is mounted to diffuse the light.

Recently, in addition to the function of illuminating the room by lighting the LED, the demand for emotional lighting that creates a desired atmosphere and gives an aesthetic feeling by expressing various colors or images such as circles is increasing.

In Korea Patent No. 10-1673570, the shape of the expression filter frame and the light of a single color are randomly scattered and reflected, so that the general monochromatic light is not controlled for separation or fusion of the light provided by the multi-color LED. Disclosed is a lighting device that randomly scatters and reflects a specific image shape on a diffuser plate. This lighting device is characterized in that the shape is expressed by allowing multicolor light scattered and reflected from white to be seen according to the image shape on the diffusion plate according to the shape of the expression filter frame.

However, in the case of the lighting device as described above, the shape is expressed as an uncontrolled multi-color effect that is randomly expressed by scattering and reflecting in white different from the original color of the light source, The condition of accurate separation and control of the source color provided by the LED has not been realized at all. As a result, in the case of the expression filter frame, rather than the interference with the LED light, dark spots occur on the surface of the diffuser plate. It can significantly impair important aesthetic stability. In addition, since white light different from the intrinsic color light of the light source is expressed to express the shape, there is a problem in that it is not possible to implement multi-color lighting through the separation of color light intended by the user, as well as not to create an intended atmosphere.

Korean Patent Registration 10-1673570

The present invention has been devised to solve the above problems, and an object to be solved in the present invention is to provide a multicolor lighting device capable of realizing multicolor lighting by mutually separating and expressing the colors of light emitted from a light source.

However, the object of the present invention is not limited thereto, and even if not explicitly mentioned, it will be said that the object or effect that can be grasped from the solution or embodiment of the problem described below is also included therein.

A multicolor lighting device according to an exemplary embodiment of the present invention includes: a frame having an inner space and open to expose the inner space; a plurality of light source modules mounted on the bottom of the frame and placed in the inner space, the plurality of light source modules including a substrate and a plurality of LEDs mounted on the substrate and configured to generate light of different colors; a blocking film disposed between the plurality of light source modules to spatially separate the light source modules; and a diffusion plate covering the inner space to protect the light source module and the blocking film, and emitting the light generated by the light source module to the outside, wherein the blocking film protrudes from the light source module toward the diffusion plate, A color crossing space having a separation distance is provided between the protruding front end of the blocking layer and the diffusion plate, and the blocking layer may have a trapezoidal cross-sectional structure in which a cross-sectional thickness decreases toward the front end.

The blocking film extends toward the diffusion plate and interconnects a pair of side surfaces disposed opposite to each other, and ends of the pair of side surfaces, and extends outward from an end surface facing the diffusion plate and a rear end of the side surface, respectively It may include a fixing surface fixed to the substrate, and the side surface may be disposed to form an obtuse angle with respect to the bottom surface of the frame on which the light source module is mounted and be inclined.

The fixing surface may be fixed to the substrate through a fixing means, and the fixing means may pass through the substrate and be connected to the bottom of the frame.

The substrate may be provided with a guide groove for guiding a position where the fixing surface is placed on the surface.

The blocking film may have a receiving groove recessed toward the end surface along the pair of side surfaces therein.

The blocking film may include a reflective film accommodated in the accommodating groove, and the reflective film may be disposed perpendicularly to the surface of the substrate in a structure that divides the accommodating groove into left and right.

Fine irregularities may be formed on the surface of the receiving groove.

The blocking film may have a structure in which the distance between the pair of side surfaces from the end surface and the separation distance correspond to 1:1.

The blocking layer may have a single closed curve or polygonal structure on a plane.

The blocking layer may be made of milky white acrylic.

According to one embodiment of the present invention, a multi-color lighting device capable of implementing multi-color lighting by allowing the colors of light emitted from a light source to be displayed separately from each other can be provided.

Various and advantageous advantages and effects of the present invention are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 is an exploded perspective view schematically showing a multicolor lighting device according to an exemplary embodiment of the present invention;
FIG. 2 is a cross-sectional view schematically illustrating the multi-color lighting device of FIG. 1 ;
3 is a schematic diagram showing an enlarged area "A" of FIG.
4A and 4B are schematic views each showing that the blocking film is fixed to the substrate;
5 is a schematic diagram illustrating a phenomenon in which light is reflected and refracted in a blocking film;
6 is a photograph showing that multi-color lighting is realized by separately expressing only the color of the light emitting region on the surface of the diffusion plate.
7A to 7C are schematic views showing a modified example of a blocking film;
8A and 8B are schematic views showing a cross-section of a lighting device according to a comparative example, and an illumination photograph showing a light emitting region;
9A and 9B are schematic views showing a cross-section of a lighting device according to a comparative example, and an illumination photograph showing a light emitting region;
10A and 10B are schematic views showing a cross-section of a lighting device according to a comparative example, and an illumination photograph showing a light emitting region;

Hereinafter, preferred embodiments will be described in detail so that those of ordinary skill in the art can easily practice the present invention with reference to the accompanying drawings. However, in describing 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 gist of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions. In addition, in this specification, terms such as 'upper', 'upper', 'upper surface', 'lower', 'lower', 'lower surface', 'side', etc. are based on the drawings, and in fact, elements or components It may vary depending on the direction in which the is placed.

In addition, throughout the specification, when a part is 'connected' with another part, it is not only 'directly connected' but also 'indirectly connected' with another element interposed therebetween. include In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

A lighting device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 5 .

Referring to the drawings, a lighting device 1 according to an exemplary embodiment of the present invention may include a frame 10 , a diffusion plate 20 , a light source module 30 , and a blocking film 40 .

The frame 10 may have an internal space 11 for accommodating and mounting the light source module 30 and the blocking film 40 therein. The frame 10 may be recessed inward from a side end that implements a shape such as a rectangle or a circle to form an inner space 11 , and may be opened forward to expose the inner space 11 to the outside.

The frame 10 supports and protects the light source module 30 and the blocking film 40 while dissipating heat generated from the light source module 30 to the outside, and may be made of, for example, a metal material such as stainless steel. However, the material of the frame 10 is not limited thereto.

The frame 10 may be detachably installed on an exterior wall of a building or an indoor ceiling using screws or brackets.

The diffusion plate 20 may be mounted on the frame 10 to cover the inner space 11 . The diffusion plate 20 can protect the light source module 30 and the blocking film 40 from the external environment and diffuse the light generated from the light source module 30 to the outside.

In one embodiment, the diffusion plate 20 may be made of milky white acrylic. However, the material of the diffusion plate 20 is not limited thereto.

The light source module 30 may be mounted on the bottom of the frame 10 and placed in the inner space 11 . The light source module 30 may include a substrate 31 and a plurality of LEDs 32 mounted on the substrate 31 .

A plurality of light source modules 30 may be provided, and each light source module 30 may be configured in various ways to generate light of different colors. In this embodiment, the light source module 30 is composed of a first light source module 30a that emits light L1 of a first color and a second light source module 30b that emits light L2 of a second color. It is exemplified, but not limited thereto. It is also possible to consist of three or more light source modules 30 according to the embodiment.

Of course, the plurality of light source modules 30 may be configured to generate light of the same color with each other, and may be configured to generate light of various colors through a combination of colors according to division driving.

The substrate 31 may be provided with a guide groove 33 on the surface for guiding a position in which the blocking film 40 to be described later is mounted.

The blocking film 40 may be mounted on the frame 10 and placed in the inner space 11 . The blocking film 40 may be disposed between the plurality of light source modules 30 to spatially separate the light source modules 30 . The blocking film 40 is disposed between the light source modules 30 to separate the light from the light source module 30 disposed on the left and right sides, respectively, to realize multi-color lighting.

As shown in the drawing, the blocking film 40 is disposed between the first light source module 30a and the second light source module 30b to form a first light emitting area LA1 and a second light source module 30a implemented by the first light source module 30a. It can be separated into the second light emitting area LA2 implemented by the light source module 30b. In this embodiment, it is illustrated that the light source module 30 is composed of two and the blocking film 40 is provided singly, but the present invention is not limited thereto. When the light source module 30 is provided in three or more, a plurality of blocking films 40 may also be built in accordingly, so that even when divided into continuous color separation or multi-color divisions, the blocking film 40 is positioned between them. Various applications are possible.

In one embodiment, the blocking film 40 may be made of milky white acrylic. However, the material of the blocking film 40 is not limited thereto.

In one embodiment, the blocking film 40 may have a single closed curve or polygonal structure on a plane. In other words, it is possible to realize multi-color lighting that can satisfy users' tastes by separating light in various forms through various structures. In this embodiment, the blocking film 40 is exemplified as having a gentle rectangular structure, but is not limited thereto.

Referring to the drawings, the blocking film 40 is provided in a structure that protrudes from the light source module 30 toward the diffusion plate 20 , and there is a predetermined separation distance between the protruding tip of the blocking film 40 and the diffusion plate 20 . A color intersection space (MA) with (SD) can be provided. That is, the front end of the blocking film 40 does not come into contact with the diffusion plate 20 and is spaced apart from each other by a predetermined distance, so that a color crossing space MA may be formed between the blocking film 40 and the diffusion plate 20 .

The blocking film 40 extends from the substrate 31 toward the diffusion plate 20 and interconnects the ends of the pair of side surfaces 42 and the pair of side surfaces 42 disposed to face each other, and the diffusion plate 20 . It may include a fixing surface 44 extending outward from the rear end of the end surface 43 and the pair of side surfaces 42 facing each other and fixed to the substrate 31 .

In addition, the blocking film 40 may have a receiving groove 41 recessed toward the end surface 43 along the pair of side surfaces 42 therein. Fine concavities and convexities 45 having various sizes and shapes may be formed on the surface of the receiving groove 41 corresponding to the inner surface of the side surface 42 . Here, the fine concavities and convexities 45 are formed by physical or chemical corrosive processing on the surface in injection molding production, not only in the form visible as shown in the drawing, and include fine concavities and convexities 45 at a level that affects the reflection of light. can

Each side surface 42 of the blocking film 40 may be disposed to face the first light source module 30a and the second light source module 30b, and to form an obtuse angle with respect to the surface of the substrate 31 and be inclined. Accordingly, the blocking film 40 may have a substantially trapezoidal cross-sectional structure in which a cross-sectional shape between the pair of side surfaces 42 becomes smaller toward the end surface 43 .

4A and 4B , the fixing surface 44 may be fixed to the substrate 31 through the fixing means FM. In an embodiment, the fixing means FM may include a bolt and a nut or a snap-fit joint, and may be connected to the bottom of the frame 10 through the substrate 31 . Of course, the fixing means (FM) is also possible to be configured in a different configuration.

When the fixing surface 44 is fixed to the substrate 31 , it may be fixed by being placed in the guide groove 33 provided on the surface of the substrate 31 . The operator can intuitively check the position where the blocking film 40 is to be mounted through the guide groove 33 provided in the substrate 31, and after positioning the fixing surface 44 in the guide groove 33, the fixing means (FM) ) can be used to fix it. Of course, it is also possible to guide the position where the fixing surface 44 is placed by displaying a guide mark on the surface of the substrate 31 .

Meanwhile, the blocking film 40 may have a structure in which the distance WD and the separation distance SD between the pair of side surfaces 42 from the end surface 43 correspond to approximately 1:1. For example, when the distance WD between the side surfaces on the end surface 43 is 5 mm, the separation distance SD is also 5 mm, and if the distance WD between the side surfaces on the end surface 43 is 1 cm, the separation distance SD ) may also have a structure of 1 cm.

Accordingly, a color crossing space MA having a square space ratio may be provided between the front end of the blocking film 40 and the diffusion plate 20 . The color crossing space MA may be provided along the longitudinal direction of the blocking layer 40 .

Most of the light L1 of the first color generated from the LEDs of the first light source module 30a and the light L2 of the second color generated from the LEDs of the second light source module 30b are respectively the diffuser plate 20 The first light emitting area LA1 and the second light emitting area LA2 may be separated from the surface of the light emitting area to be emitted.

In addition, light generated from the LEDs of some of the first light source module 30a and the LEDs of the second light source module 30b close to the blocking film 40 and directed to the opposite light emitting area is blocked by the blocking film 40 to the corresponding light emitting area. can be released as For example, referring to FIG. 5 , of the light L2 of the second color of the LED of the second light source module 30b, the light directed to the first light emitting area LA1 is mostly the side 42 of the blocking film 40 . is reflected from and proceeds back to the second light emitting area LA2, some of which is refracted and proceeds into the blocking film 40, and then undergoes total reflection by the fine concavities and convexities 45 to form the end surface 43 and the color intersecting space MA It may be discharged to the outside through the diffusion plate 20 . This may be equally applied to the light L1 of the first color of the LED of the first light source module 30a.

In addition, since the side surface 42 of the blocking film 40 is inclined at an obtuse angle, the light reflected from the side surface 42 proceeds closer to the color crossing space MA side than the vertically arranged structure.

In addition, the first color light L1 and the second light generated from the LEDs of the first light source module 30a and the LEDs of the second light source module 30b that are slightly spaced apart from the blocking film 40 are directed to the opposite light emitting area, respectively. The light L2 of the two colors is not interfered by the blocking film 40 as the end surface 43 of the blocking film 40 goes down below the diffusion angle of the LED (approximately 120°), so it is partially in the color crossing space MA It may be emitted to the outside through the diffusion plate 20 without crossing or not crossing. In this case, the light L1 of the first color and the light L2 of the second color that intersect in the color intersection space MA are only a small portion, so the color mixing effect according to the intersection is very insignificant, and the blocking film 40 As the light L1 of the first color and the light L2 of the second color that have passed through the end surface 43 are overlapped with each other, the color mixing effect according to the intersection is substantially eliminated.

Accordingly, as shown in FIG. 6 , the first light emitting area LA1 and the second light emitting area LA2 on the surface of the diffuser plate 20 only have the color of each light emitting area based on the center of the color crossing space MA. It can be expressed as being separated from each other, and through this, multi-color lighting can be implemented. This has the effect of realizing more vivid multi-color lighting compared to when a separate color such as a dark area, a non-emission area, or a white light is expressed between the first light-emitting area LA1 and the second light-emitting area LA2 . In addition, it is possible to further increase the difference in aesthetics as well as the intended emotional lighting.

In addition, by forming the shielding film 40 with milky white acrylic like the diffusion plate 20 , the shielding film 40 can be prevented from being reflected or seen through the diffusion plate 20 when the light source module 30 is turned off.

7A to 7C schematically show a modified example of the blocking film.

As shown in FIG. 7A , the blocking film 40 - 1 may have a structure in which the receiving groove 41 is not provided. For example, the blocking film 40 - 1 may have a solid structure made of the same material.

Also, as shown in FIG. 7B , the blocking layer 40 - 2 may be filled with a material 40a in which the receiving groove 41 has different physical properties from the blocking layer 40 . Here, the physical properties may include, for example, refractive index.

Also, as shown in FIG. 7C , the blocking film 40 - 3 may accommodate the reflective film 46 in the receiving groove 41 . The reflective film 46 may have a thin thickness of, for example, several millimeters or several micrometers, and may be disposed perpendicular to the surface of the substrate 31 in a structure in which the receiving groove 41 is divided into left and right. there is.

8 to 10 each show a lighting device according to a comparative example. The lighting device according to the comparative example may have a structure in which there is no blocking film, a structure in which the blocking film is in contact with the diffusion plate, and a structure in which the protruding length of the blocking film is short. In addition, the state in which the light emitting region of each lighting device is expressed on the surface of the diffusion plate is shown in the photograph.

As in FIGS. 8A and 8B , in the structure in which the blocking film 40 is not inside, it can be seen that the colors of each light emitting region are expressed in a mixed state without being separated from each other. Accordingly, it can be confirmed that multi-color lighting cannot be realized as the colors of each light emitting region cannot be separated from each other.

On the other hand, in the structure in which the internal blocking film 40 is in contact with the diffusion plate 20 as in FIGS. 9A and 9B , a dark region corresponding to the thickness of the blocking film 40 is generated on the surface of the diffusion plate 20 . can check that

And, in the structure far away from the diffusion plate 20 because the protruding length of the inner blocking film 40 is short, as in FIGS. 10A and 10B , each light emitting area (LA1, LA2) overlaps each light emitting area ( It can be seen that a plurality of color layers different from those of LA1 and LA2) are generated.

That is, as in FIG. 6 , the color of each light emitting area LA1 and LA2 is not separated from each other, but a dark area (see FIG. 9b ) or a plurality of color layers interposed in the middle (see FIG. 10b ) is expressed. and multi-color lighting, which is not as clear as the multi-color lighting implemented in the present invention and has the disadvantage of reducing aesthetics.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains will realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1.... lighting devices
10... frame
11... interior space
20... diffuser plate
30... light module
31... board
32... LED
40... barrier
41... accommodation home
42... side
43... the end
44... fixed surface
45... fine irregularities
46... reflective screen

Claims (10)

a frame having an inner space and open to expose the inner space;
a plurality of light source modules mounted on the bottom of the frame and placed in the inner space, the plurality of light source modules including a substrate and a plurality of LEDs mounted on the substrate and configured to generate light of different colors;
a blocking film disposed between the plurality of light source modules to spatially separate the light source modules; and
a diffusion plate covering the inner space to protect the light source module and the blocking film, and for emitting light generated from the light source module to the outside;
includes,
The blocking film protrudes from the light source module toward the diffusion plate, and a color crossing space having a separation distance is provided between the protruding tip of the blocking film and the diffusion plate, and the blocking film has a cross-sectional thickness that decreases toward the tip. It has a trapezoidal cross-sectional structure,
The blocking film extends toward the diffusion plate and interconnects a pair of side surfaces disposed opposite to each other, and ends of the pair of side surfaces, and extends outward from an end surface facing the diffusion plate and a rear end of the side surface, respectively. and a fixing surface fixed to the substrate;
The side surface is disposed obtusely with respect to the surface of the substrate and inclined,
The blocking film is provided with a receiving groove recessed toward the end surface along the pair of side surfaces therein,
The blocking film includes a reflective film accommodated in the accommodating groove, and the reflective film is disposed perpendicular to the surface of the substrate in a structure that divides the accommodating groove into left and right.
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