KR20120132000A - Lighting module - Google Patents

Abstract

An embodiment of the present invention relates to a lighting module.
Illumination module according to the embodiment, the light guide plate having a predetermined pattern; A case covering both side portions of the light guide plate; And a light source unit disposed in the case to emit light to the light guide plate, wherein the light guide plate emits light from the light source unit through upper and lower surfaces.

Description

Lighting module {LIGHTING MODULE}

An embodiment of the present invention relates to a lighting module.

In general, a lot of bulbs or fluorescent lights are used as indoor or outdoor lighting, such a bulb or fluorescent lamp has a short life and has to be replaced frequently. In addition, the conventional fluorescent lamp has a problem that excessively decreases the illuminance due to deterioration over the use time.

In order to solve this problem, a light emitting diode (LED), which has excellent controllability, fast response speed, high electro-optical conversion efficiency, long life, low power consumption, high brightness, and emotional lighting, is used. Various types of lighting modules have been developed.

Embodiments provide an illumination module that simultaneously emits light up and down.

In addition, the embodiment provides an illumination module that can adjust the amount of light emitted upward and the amount of light emitted downward.

Illumination module according to the embodiment, the light guide plate having a predetermined pattern; A case covering both side portions of the light guide plate; And a light source unit disposed in the case to emit light to the light guide plate, wherein the light guide plate emits light from the light source unit through upper and lower surfaces.

Illumination module according to the embodiment, the light guide plate having a predetermined pattern; A first light emitting device on one side of the light guide plate; A second light emitting device on the other side of the light guide plate; A first case surrounding one side of the first light emitting element and the light guide plate; A second case surrounding the second light emitting device and the other side of the light guide plate; .

Using the lighting module according to the embodiment, it is possible to emit light up and down at the same time.

In addition, there is an advantage that can adjust the amount of light emitted up and the amount of light emitted down.

1 is a perspective view of a lighting module according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the lighting module shown in FIG. 1.
3 is a cross-sectional view of the lighting module shown in FIG. 1.
4 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3.
5 is a cross-sectional view of another embodiment of the lighting module shown in FIG.
6 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3.
7 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3.
8 is a cross-sectional view of the lighting module shown in FIG. 1.
9 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 8.
10 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 8.
11 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 8.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. In addition, the size of each component does not necessarily reflect the actual size.

In addition, in the description of the embodiment according to the present invention, when described as being formed on an "on or under" of each substrate, the (top) or (bottom) On or under includes both two same substrates directly contacted with each other or one or more other substrates are formed indirectly between the same substrates. In addition, when expressed as “on” or “under”, it may include the meaning of the downward direction as well as the upward direction based on one substrate.

Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a lighting module according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the lighting module shown in FIG.

1 to 2, the lighting module 100 includes a light guide plate 110, a first light source unit 130a, a second light source unit 130b, a first case 150A, and a second case 150B. .

The first case 150A accommodates the first light source unit 130a, covers one side of the light guide plate 110, and the second case 150B receives the second light source unit 130b, and Cover the other side. Since the second case 150B is the same as the first case 150A, the description of the second case 150B is replaced with the description of the first case 150A.

The first case 150A includes a lower case 150a 'and an upper case 150a' '. The lower case 150a 'and the upper case 150a' 'may be coupled to each other through a plurality of screws S.

The lower case 150a 'has a base portion 151a' and an extension portion 152a '. The first light source 130a is disposed on the inner surface of the base 151a '. The extension part 152a 'extends in a direction perpendicular to the inner surface of the base part 151a'.

The upper case 150a '' has a base portion 151a '' and an extension portion 152a ''. The base portion 151a 'of the lower case 150a' is disposed on an inner surface of the base portion 151a ''. The extension part 152a '' extends perpendicularly to the inner surface of the base part 151a ''.

The base portion 151a 'of the lower case 150a' may have a coupling groove g1, and the base portion 151a '' of the upper case 150a '' may have a coupling hole h1. The coupling hole h1 and the coupling groove g1 are disposed at positions corresponding to each other. Therefore, when the lower case 150a 'and the upper case 150a' 'are coupled to each other, the screw S passes through the coupling hole h1 and is inserted into the coupling groove g1, thereby providing a base of the lower case 150a'. The portion 151a ′ and the base portion 151a ″ of the upper case 150a ″ may be closely coupled to each other. Here, the reason that the base portion 151a 'of the lower case 150a' has the coupling groove g1 instead of the coupling hole prevents damage or breakage of the first light source 130a by the screw S and prevents the screw ( This is to prevent electrical contact between S) and the first light source 130a.

The base portion 151a 'of the lower case 150a' has an opening G2, and the base portion 151a '' of the upper case 150a '' has an opening G1. The openings G2 of the lower case 150a 'and the openings G1 of the upper case 150a' 'are respectively disposed at positions corresponding to each other. Specifically, the openings G2 of the lower case 150a' may be disposed at one side of the first light source 130a. have. The driving driver 190 is disposed in the opening G2 of the lower case 150a 'and the opening G1 of the upper case 150a' '. The driving driver 190 is electrically connected to the first light source unit 130a to supply power received from the outside to the first light source unit 130a or to control on / off of the first light source unit 130a.

Although not shown in the drawings, the extension part 152a 'of the lower case 150a' may have a groove into which one side of the substrate 131a of the first light source 130a is inserted, and the upper case 150a '' is provided. The extension portion 152a ″ may have a groove into which the other side of the substrate 131a of the first light source 130a is inserted. Therefore, the first light source unit 130a may be stably coupled to the first case 150A.

The extension part 152a 'of the lower case 150a' may have a receiving groove r. As the receiving groove r, a protrusion formed on one surface of the light guide plate 110 is accommodated. Therefore, the bonding force between the extension part 152a 'of the lower case 150a' and the light guide plate 110 may be strengthened, and at the same time, the movement or detachment of the light guide plate 110 may be prevented.

The base part 151a 'and the extension part 152a' of the lower case 150a 'may be independently configured, and both may combine to form the lower case 150a'. The base part 151a '' and the extension part 152a '' of the upper case 150a '' may also be independently configured, and both may combine to form the upper case 150a ''.

The extension portion 152a 'of the lower case 150a' and the extension portion 152a '' of the upper case 150a '' have the first light source 130a having the base portion 151a 'of the upper case 150a' '. When disposed on the inner surface of '), both sides of the substrate 131a of the first light source 130a are respectively supported.

The upper case 150a ″ may have a receiving portion R. The accommodation part R accommodates one side of the first light source 130a and one side of the base 151a 'of the lower case 150a'.

The first light source unit 130a is accommodated in the first case 150A. In detail, the first light source 130a is disposed on an inner surface of the base 151a 'of the lower case 150a' of the first case 150A.

The first light source unit 130a has a substrate 131a and a light emitting element 132a.

A plurality of light emitting elements 132a are arranged in a line on one surface of the substrate 131a. The other surface of the substrate 131a is disposed on the inner surface of the base portion 151a 'of the lower case 150a' of the first case 150A.

The substrate 131a may include a printed circuit board (PCB), a metal core printed circuit board (MCPCB), a flexible printed circuit board (FPCB), or a ceramic substrate.

The light emitting device 132a is a light emitting device that emits light having the same color, but may emit light having a different color. Therefore, a variety of colors can be made of a combination of two different colors can be implemented emotional lighting.

The light emitting device 132a may be a blue light emitting device, but a white light emitting device having a high color rendering index (CRI) may be used if possible. The white light emitting device may be a light emitting device that emits white light by molding a synthetic resin including a phosphor on the blue light emitting chip. Here, the phosphor may include at least one of garnet-based (YAG, TAG), silicate (Silicate), nitride (Nitride) and oxynitride (oxyxyride). Natural light (white light) may be realized by including only a yellow phosphor in a synthetic resin, but may further include a green phosphor or a red phosphor in order to improve color rendering index and reduce color temperature. In addition, when various kinds of phosphors are mixed in the synthetic resin, the addition ratio according to the color of the phosphor may use more green phosphors than red phosphors and more yellow phosphors than green phosphors. YAG, silicate, and oxynitride systems of the garnet system may be used as the yellow phosphor, silicate system and oxynitride system may be used as the green system phosphor, and nitrides may be used as the red system phosphor. have. In addition to mixing various kinds of phosphors in a synthetic resin, a layer having a red phosphor, a layer having a green phosphor, and a layer having a yellow phosphor may be divided separately.

The second light source 130b includes a substrate 131b and a light emitting element 132b. Since the substrate 131b and the light emitting element 132b of the second light source unit 130b are the same as the substrate 131a and the light emitting element 132a of the first light source unit 130a, a detailed description thereof will be omitted.

The first light source unit 130a and the second light source unit 130b are disposed to face each other with the light guide plate 110 interposed therebetween. That is, the first light source 130a is disposed on one side of the light guide plate 110, and the second light source 130b is disposed on the other side of the light guide plate 110.

The light emitting device 132a of the first light source unit 130a and the light emitting device 132b of the second light source unit 130b may have different color temperature values. For example, the plurality of light emitting devices 132a included in the first light source unit 130a are warm white LEDs, and the plurality of light emitting devices 132b included in the second light source unit 130b are cool. It may be a cool white LED. The warm white light emitting device and the cool white light emitting device are devices that emit white light. Since the warm white light emitting device and the cool white light emitting device may emit a correlation color temperature, respectively, to emit white light of mixed light, a color rendering index (CRI) indicating closeness to natural sunlight is increased. Therefore, the color of the real object can be prevented from being distorted, and the eye fatigue of the user is reduced.

The light guide plate 110 is disposed between the first light source unit 130a and the second light source unit 130b disposed to face each other. In detail, the first light source unit 130a is disposed on one side of the light guide plate 110, and the second light source unit 130b is disposed on the other side facing one surface of the light guide plate 110.

The light guide plate 110 receives light from the first and second light source units 130a and 130b through both side surfaces and exits through the upper and lower surfaces. The light guide plate 110 guides the light and changes the path of the light.

One side of the light guide plate 110 is inserted into the first case 150A, and the other side is inserted into the second case 150B.

On the upper and lower surfaces of the light guide plate 110, the remaining portions except for the portions inserted into the first and second cases 150A and 150B face the outside. Accordingly, light from the first and second light source units 130a and 130b is emitted to the outside through the upper and lower surfaces of the light guide plate 110.

The light guide plate 110 may be made of acrylic resin such as polymethyl metaacrylate (PMMA), polyethylene terephthlate (PET), polycarbonate (PC), cycloolefin copolymer (COC), polyethylene naphthalate (PEN) resin, etc. Can be.

The light guide plate 110 has a predetermined pattern. The predetermined pattern may be formed inside the light guide plate 110. This will be described in detail with reference to FIGS. 3 to 7.

3 is a cross-sectional view of the lighting module shown in FIG. 1.

Referring to FIG. 3, the light guide plate 110 has predetermined patterns 115 therein.

The predetermined patterns 115 may be formed in the light guide plate 110 to be formed through laser processing. The predetermined patterns 115 may be hollow.

The predetermined patterns 115 change the paths of the light from the first and second light source units 130a and 130b so as to be emitted to the upper and lower surfaces of the light guide plate 110.

The predetermined pattern 115 may have an ellipse shape, and the plurality of patterns 115 may have the same shape and may be arranged in a line at an inner center of the light guide plate 110. In this case, light from the first and second light source units 130a and 130b may be emitted to the upper and lower surfaces of the light guide plate 110 at the same ratio.

The predetermined patterns 115 arranged in a line may be disposed closer to one of the top and bottom surfaces of the light guide plate 110. When the patterns 115 are disposed close to the top or bottom surface, the amount of light emitted to the top and bottom surfaces of the light guide plate 110 may be adjusted differently.

The predetermined pattern 115 may have various shapes as shown in FIGS. 4 to 6 as well as an ellipse shape.

4 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3, FIG. 5 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3, and FIG. 6 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3. It is a cross section.

As illustrated in FIG. 4, the pattern 115 ′ of the LGP 110 may have a circular shape, and as illustrated in FIG. 5, the pattern 115 ′ ′ of the LGP 110 may have a slot shape.

As illustrated in FIG. 6, the pattern 115 ′ ′ ′ of the light guide plate 110 may be a shape in which an ellipse and a circle are combined. That is, the upper portion may be in the form of an ellipse and the lower portion may be in the form of a circle. Here, the predetermined pattern 115 '′ ′ may have an upper portion in a circle shape and an lower portion in an ellipse shape. The patterns 115 ′ ′ ′ may differently control the amount of light emitted to the top and bottom surfaces of the light guide plate 110.

Referring to FIG. 3 again, the distance between the predetermined patterns 115 may be constant. In other words, the density of the predetermined patterns 115 may be constant.

In addition, the interval between the predetermined patterns 115 may not be constant. In other words, the density of the predetermined patterns 115 may not be constant. This will be described with reference to FIG. 7.

7 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 3.

Referring to FIG. 7, the distance between the predetermined patterns 115 is not constant. In other words, the density of the patterns 115 is not constant. In detail, the densities of the patterns 115 become greater from both sides of the light guide plate 110 toward the center portion. That is, the distance between the neighboring patterns 115 becomes narrower toward the center of the light guide plate 110. The lighting module having the patterns 115 may have a constant light distribution characteristic on the upper or lower surface of the light guide plate 110.

Although not shown in the drawings, the patterns illustrated in FIGS. 4 to 6 may also have an arrangement structure as illustrated in FIG. 7.

Referring back to FIG. 2, the light guide plate 110 may have a predetermined pattern. Here, the predetermined pattern may be formed on the upper or lower surface of the light guide plate 110. Specifically, this will be described with reference to FIGS. 8 to 11.

FIG. 8 is a cross-sectional view of the lighting module shown in FIG. 1, a cross-sectional view of another embodiment of the lighting module shown in FIG. 8, FIG. 10 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 8, and FIG. 8 is a cross-sectional view of another embodiment of the lighting module shown in FIG.

Referring to FIG. 8, a predetermined pattern 117 may be formed on the top and bottom surfaces of the light guide plate 110. Here, the pattern 117 may be formed on only one surface of the upper surface and the lower surface of the light guide plate 110.

The predetermined pattern 117 may have a semi-elliptic shape as shown in FIG. 8. In addition, as shown in FIG. 9, the predetermined pattern 117 ′ may have a semi-circular shape.

In addition, as shown in FIG. 10, the predetermined pattern may have a half ellipse pattern 117 and a half circle pattern 117 ′ together. That is, a plurality of semi-circle patterns 117 may be formed on the upper surface of the light guide plate 110, and a plurality of semi-elliptic patterns 117 may be formed on the lower surface of the light guide plate 110. These patterns may control the amount of light emitted to the upper and lower surfaces of the light guide plate 110 differently.

Referring to FIG. 8 again, the predetermined patterns 117 may not only be formed on the upper or lower surface of the light guide plate 110 at regular intervals but may not have a predetermined interval. This will be described with reference to FIG. 11.

11 is a cross-sectional view of another embodiment of the lighting module shown in FIG. 8.

Referring to FIG. 11, an interval between predetermined patterns 117 is not constant. In other words, the density of the patterns 117 is not constant. In detail, the densities of the patterns 117 become greater from both sides of the light guide plate 110 toward the center portion. That is, the distance between the neighboring patterns 117 becomes narrower toward the center of the light guide plate 110. The lighting module having the patterns 117 may have a constant light distribution characteristic on the upper or lower surface of the light guide plate 110.

Although not shown in the drawings, the patterns shown in FIGS. 9 to 10 may have an arrangement structure as shown in FIG. 11.

Referring back to FIG. 2, the lighting module according to the embodiment may further include first and second photoexcited films 170a and 170b.

The first light excitation film 170a is disposed between the light guide plate 110 and the first light source unit 130a, and the second light excitation film 170b is disposed between the light guide plate 110 and the second light source unit 130b.

The first and second light excitation films 170a and 170b may convert a color of light by converting a part of wavelengths of the light emitted from the first light source 130a and the second light source 130b.

The first and second photoexcited films 170a and 170b may include a transparent resin and a fluorescent material contained in the transparent resin. The fluorescent materials of the first photoexcitation film 170a and the second photoexcitation film 170b may be identical to each other, but may be different from each other so as to convert the light into different color to realize the emotional illumination light. Meanwhile, a curing agent or an additive may be included in the transparent resin of the first and second photoexcited films 170a and 170b, the curing agent cures the transparent resin, and the additive evenly disperses the fluorescent material in the transparent resin. In addition, a diffusion material may be included in the transparent resin, and the diffusion material improves the refractive index of the light source to increase the excitation rate of the fluorescent material.

Although not shown in the drawings, the lighting module according to the embodiment may further include a diffusion plate.

The diffusion plate diffuses the light emitted from the light guide plate 110. By using a diffusion plate, spots of light can be eliminated. In this case, the diffusion plate may be disposed on at least one or both surfaces of the upper and lower surfaces of the light guide plate 110, and both sides of the diffusion plate may be inserted into the first case 150A and the second case 150B, respectively. have.

Table 1 below is a specification of the lighting module according to the embodiment shown in FIG. 1. For reference, the lighting module illustrated in FIGS. 2 to 11 is an upside down representation of the lighting module illustrated in FIG. 1.

Product Item Value Strip Spce.
(13S * 5P)

Voltage (V) 39
Current (mA) 350
Power (W) 13.65
Module Spec.




Total Lumen output (lm) Up Lumen Output 2,500
500 Down Lumen Output 2,000 Module Power (W)
27.3
Efficacy (lm / W)
90
CCT (K)
4,000
CRI
80
Fixture Spec.
Lumen Output (lm)
10,000 (Up: 2,000, Down: 8,000)
DC Power Consumption (W)
110

Referring to Table 1, in the lighting module illustrated in FIG. 1, the lumen value emitted upward is smaller than the lumen value emitted downward. Conversely, however, the lumens emitted upwards may be greater than the lumens emitted downwards.

Meanwhile, the width (W (mm)) * height (H (mm)) * length (L (mm)) of the lighting module shown in FIG. 1 may be either 80 * 12 * 560 or 45 * 12 * 560. have.

Although described above with reference to the embodiment is only an example and is not intended to limit the invention, those of ordinary skill in the art to which the present invention belongs without departing from the essential characteristics of the embodiment, not illustrated It will be appreciated that many variations and applications are possible. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110: light guide plate
130a: first light source unit
130b: second light source unit
150A: first case
150B: second case
170a: first optical excitation film
170b: second optical excitation film

Claims (16)

A light guide plate having a predetermined pattern;
A case covering both side portions of the light guide plate; And
A light source unit disposed in the case to emit light to the light guide plate;
Including,
The light guide plate emits light from the light source through the upper and lower surfaces. The method of claim 1,
The pattern is an illumination module formed inside the light guide plate. The method of claim 2,
The light source unit includes a first light source unit disposed on one side of the light guide plate and a second light source unit disposed on the other side of the light guide plate,
The plurality of patterns, the illumination module is arranged in a line between the first light source and the second light source. The method of claim 3, wherein
The plurality of patterns is a lighting module disposed in the center of the light guide plate. The method of claim 3, wherein
The plurality of patterns are disposed closer to any one of the top or bottom surface of the light guide plate. The method of claim 1,
The plurality of patterns, the plurality of patterns is an illumination module formed on at least one of the upper surface and the lower surface of the light guide plate. The method according to claim 2 or 6,
And a density of the plurality of patterns increases from both sides of the light guide plate toward the center of the light guide plate. The method according to claim 2 or 6,
The plurality of patterns includes at least one of the shape of a circle, ellipse and slot. The method of claim 2,
The first light source unit includes a warm white light emitting device, and the second light source unit comprises a cool white light emitting device. The method of claim 1,
And an optical excitation film disposed between the light guide plate and the light source unit for converting a wavelength of light from the light source unit. The method of claim 1,
And a diffuser plate disposed on at least one of an upper surface and a lower surface of the light guide plate. A light guide plate having a predetermined pattern;
A first light emitting device on one side of the light guide plate;
A second light emitting device on the other side of the light guide plate;
A first case surrounding one side of the first light emitting element and the light guide plate; And
A second case surrounding the second light emitting element and the other side of the light guide plate;
Lighting module comprising a. 13. The method of claim 12,
The pattern is an illumination module formed inside the light guide plate. 13. The method of claim 12,
The lighting module is formed on at least one of the upper surface and the lower surface of the light guide plate. The method according to claim 13 or 14,
The pattern is a plurality, the plurality of patterns are arranged in a line. The method of claim 15,
An interval between the plurality of patterns is narrowed toward the center at both sides of the light guide plate.

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