KR101859460B1 - Lighting module - Google Patents

Abstract

An embodiment of the present invention relates to a lighting module.
An illumination module according to an embodiment includes: 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 and emitting light to the light guide plate, wherein the light guide plate emits light from the light source unit through the upper surface and the lower surface, the lower surface of the light guide plate includes a protrusion, And has a receiving groove into which the projection is inserted.

Description

Lighting module {LIGHTING MODULE}

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

Generally, bulbs or fluorescent lamps are widely used as indoor or outdoor illumination lamps, and such bulbs or fluorescent lamps have a short life span and therefore frequently have to be replaced. In addition, the conventional fluorescent lamp has a problem that the illuminance gradually decreases due to deterioration over time of its use.

In order to solve such a problem, a light emitting diode (LED) capable of realizing excellent controllability, fast response speed, high electric light conversion efficiency, long life, low power consumption, Various types of lighting modules are being developed.

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

The embodiment also provides an illumination module capable of adjusting the amount of light emitted upward and the amount of light emitted downward.

An illumination module according to an embodiment includes: 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 and emitting light to the light guide plate, wherein the light guide plate emits light from the light source unit through the upper surface and the lower surface, the lower surface of the light guide plate includes a protrusion, And has a receiving groove into which the projection is inserted.

An illumination module according to an embodiment includes: a light guide plate having a predetermined pattern; First and second light emitting elements disposed on both sides of the light guide plate; And first and second cases each enclosing the first and second light emitting devices and both sides of the light guide plate, wherein the first and second light emitting devices are arranged on both sides of the light guide plate, 1 and the second substrate, and the thickness of the light guide plate is smaller than the widths of the first and second substrates.

Using an illumination module according to an embodiment, light can be emitted simultaneously up and down.

Further, there is an advantage that the amount of light emitted upwardly and the amount of light emitted downwardly can be adjusted.

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

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

In the description of the embodiment according to the present invention, in the case of being described as being formed "on or under" of each substrate, the upper (upper) or lower (lower) (on or under) all include that two identical substrates are directly contacted with each other or one or more other substrates are indirectly formed between the same substrates. Also, when expressed as " on or under ", it may include not only an upward direction but also a downward direction with respect to one substrate.

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

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

1 and 2, the lighting module 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 part 130a and covers one side of the light guide plate 110. The second case 150B accommodates the second light source part 130b, And covers the other side portion. 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 part 130a is disposed on the inner surface of the base part 151a '. The extension portion 152a 'extends in a direction perpendicular to the inner surface of the base portion 151a'.

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

The base portion 151a 'of the lower case 150a' has an engagement groove g1 and the base portion 151a '' of the upper case 150a '' may have an engagement hole h1. The engaging hole h1 and the engaging groove g1 are disposed at positions corresponding to each other. Therefore, when the lower case 150a 'and the upper case 150a' 'are engaged, the screw S is inserted into the coupling groove g1 through the coupling hole h1, And the base portion 151a '' of the upper case 150a '' can be closely contacted to each other. The reason why the base portion 151a 'of the lower case 150a' has an engagement groove g1 other than the engagement hole is to prevent damage or breakage of the first light source portion 130a by the screw S, S and the first light source unit 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 opening G2 of the lower case 150a 'and the opening G1 of the upper case 150a' 'are disposed at positions corresponding to each other. Specifically, the opening G2 of the upper case 150a' 'may be disposed at one side of the first light source 130a have. A driving driver 190 is disposed at 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 to the first light source unit 130a from the outside or to control ON / OFF of the first light source unit 130a.

Although not shown in the figure, the extension 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 ' May have a groove into which the other side of the substrate 131a of the first light source part 130a is inserted. Accordingly, the first light source unit 130a can be stably coupled to the first case 150A.

The extending portion 152a 'of the lower case 150a' may have the receiving groove r. The protrusion formed on one surface of the light guide plate 110 is accommodated in the receiving groove r. Accordingly, the coupling force between the extension 152a 'of the lower case 150a' and the light guide plate 110 can be enhanced, and at the same time, the light guide plate 110 can be prevented from moving or departing.

The base portion 151a 'and the extending portion 152a' of the lower case 150a 'are independently formed, and the lower case 150a' can be combined with the lower case 150a '. The base portion 151a '' and the extension portion 152a '' of the upper case 150a '' are also independently formed, and the upper case 150a '' and the upper case 150a '' can be joined together.

The extension 152a 'of the lower case 150a' and the extension 152a '' of the upper case 150a '' are formed such that the first light source 130a is connected to the base 151a ' ', Respectively, on both sides of the substrate 131a of the first light source unit 130a.

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

The first light source unit 130a is accommodated in the first case 150A. Specifically, the first light source part 130a is disposed on the inner surface of the base part 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 devices 132a are arranged in a row 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 PCB (MCPCB), a flexible printed circuit board (FPCB), a ceramic substrate, or the like.

The light emitting element 132a is a light emitting element that emits light having the same color, but can emit light having a different color. Therefore, it is possible to realize emotional illumination by allowing light of various colors by combining two different colors.

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) can be used if possible. The white light emitting device may be a light emitting device that emits white light by molding a synthetic resin containing a phosphor on a blue light emitting chip. Here, the phosphor may include at least one of a garnet (YAG, TAG), a silicate, a nitride, and an oxynitride. Natural light (white light) can be realized by including only a yellow fluorescent substance in a synthetic resin. However, a green fluorescent substance or a red fluorescent substance may be further included to improve the color rendering index and reduce the color temperature. In addition, when various kinds of phosphors are mixed in the synthetic resin, the addition ratio of the phosphors may be more than that of the red phosphors, and the phosphors of the yellow phosphors may be used more than the phosphors of the 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. A layer having a red phosphor, a layer having a green phosphor, and a layer having a yellow phosphor can be separately formed in addition to mixing a plurality of phosphors in a synthetic resin.

The second light source unit 130b has a substrate 131b and a light emitting element 132b. The substrate 131b and the light emitting device 132b of the second light source unit 130b are the same as the substrate 131a and the light emitting device 132a of the first light source unit 130a.

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 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 of the light guide plate 110. [

The light emitting element 132a of the first light source unit 130a and the light emitting element 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 is a warm white LED, and the plurality of light emitting devices 132b included in the second light source unit 130b are cool May be a white light emitting device (Cool white LED). The warm white light emitting element and the cool white light emitting element emit white light. The warm white light emitting element and the cool white light emitting element can emit the white light of the mixed light by radiating the correlated color temperature, respectively, so that the color rendering index (CRI) indicating the close proximity to the natural sunlight becomes high. Therefore, it is possible to prevent the color of the actual object from being distorted and to reduce the fatigue of the user's eyes.

The light guide plate 110 is disposed between the first light source unit 130a and the second light source unit 130b arranged to face each other. Specifically, 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 another side of the light guide plate 110 opposite to the one side.

The light guide plate 110 receives light from the first and second light sources 130a and 130b through both sides and emits light through the upper surface and the lower surface. The light guide plate 110 guides the light and changes the light path.

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.

The remaining portions of the upper surface and the lower surface of the light guide plate 110 except for the portions inserted into the first and second cases 150A and 150B are directed to the outside. Therefore, the light from the first and second light sources 130a and 130b is emitted to the outside through the upper surface and the lower surface of the light guide plate 110. [

The light guide plate 110 may be made of an acrylic resin such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), cycloolefin copolymer (COC) and polyethylene naphthalate .

The light guide plate 110 has a predetermined pattern. The predetermined pattern may be formed inside the light guide plate 110. Will be described in detail with reference to Figs. 3 to 7. Fig.

3 is a cross-sectional view of the illumination module shown in Fig.

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

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

The predetermined patterns 115 change the path of the light from the first and second light sources 130a and 130b to be emitted to the upper surface and the lower surface of the light guide plate 110. [

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

The predetermined patterns 115 arranged in a row may be disposed closer to either one of the upper surface and the lower surface of the light guide plate 110. [ When the patterns 115 are arranged close to the upper surface or the lower surface, the amount of light emitted to the upper surface of the light guide plate 110 and the amount of light emitted to the lower surface can be controlled differently.

The predetermined pattern 115 may have various shapes, as shown in Figs. 4 to 6, as well as an elliptical shape.

FIG. 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, Sectional view.

As shown in FIG. 4, the pattern 115 'of the light guide plate 110 may be circular, and the pattern 115' 'of the light guide plate 110 may be in a slot shape, as shown in FIG.

As shown in FIG. 6, the pattern 115 '' 'of the light guide plate 110 may be formed by combining an ellipse and a circle. That is, the upper portion may be an elliptical shape, and the lower portion may be a circular shape. Here, the predetermined pattern 115 '' 'may have an upper circular shape and a lower circular shape. These patterns 115 '' 'can control the amount of light emitted to the upper and lower surfaces of the light guide plate 110 differently.

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

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

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

Referring to FIG. 7, the interval between predetermined patterns 115 is not constant. In other words, the density of the patterns 115 is not constant. Specifically, the density of the patterns 115 increases from both side portions of the light guide plate 110 toward the central portion. That is, the distance between the neighboring patterns 115 becomes narrower toward the center of the light guide plate 110. The illumination module having such patterns 115 may have a constant light distribution characteristic on the upper surface or lower surface of the light guide plate 110. [

Meanwhile, although not shown in the drawing, the patterns shown in FIGS. 4 to 6 may have an arrangement structure as shown in FIG.

Referring again to FIG. 2, the light guide plate 110 may have a predetermined pattern. Here, the predetermined pattern may be formed on the upper surface or the lower surface of the light guide plate 110. This will be described in detail with reference to Figs. 8 to 11. Fig.

Fig. 8 is a cross-sectional view of the lighting module shown in Fig. 1, which is 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. Sectional view of another embodiment of the lighting module shown in Figure 8

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

The predetermined pattern 117 may be semi-elliptical in shape as shown in Fig. In addition, as shown in FIG. 9, the predetermined pattern 117 'may be in a semicircular shape.

In addition, as shown in FIG. 10, a predetermined pattern may have a semi-elliptic pattern 117 and a semi-circular pattern 117 '. That is, a semi-circular pattern 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. These patterns can control the amount of light emitted to the upper surface and the lower surface of the light guide plate 110 differently.

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

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

Referring to FIG. 11, the interval between predetermined patterns 117 is not constant. In other words, the density of the patterns 117 is not constant. Specifically, the density of the patterns 117 increases from both side portions of the light guide plate 110 to the central portion thereof. That is, the distance between the neighboring patterns 117 becomes narrower toward the center of the light guide plate 110. The light module having such patterns 117 may have a uniform light distribution characteristic on the upper surface or the lower surface of the light guide plate 110. [

Meanwhile, although not shown in the drawing, the patterns shown in FIGS. 9 to 10 may have the arrangement structure as shown in FIG.

Referring again to FIG. 2, the illumination module according to the embodiment may further include first and second light excitation films 170a and 170b.

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

The first and second photoexcitation films 170a and 170b can convert a part of the wavelength of the light emitted from the first light source unit 130a and the second light source unit 130b to change the color of light.

The first and second photo-excited 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 that emit light can be realized by converting the color to another light. On the other hand, the transparent resin of the first and second photo-excited films 170a and 170b may contain a curing agent or an additive, the curing agent cures the transparent resin, and the additives disperse the fluorescent material evenly inside the transparent resin. In addition, a diffusion material may be included in the transparent resin, and the diffusion material improves the refraction of the light source to increase the excitation ratio of the fluorescent material.

Although not shown in the drawings, the illumination 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, spot of light can be eliminated. In this case, the diffusion plate is disposed on at least one or both surfaces of the upper surface and the lower surface of the light guide plate 110, and both side portions of the diffusion plate can be inserted into the first case 150A and the second case 150B, respectively have.

Table 1 below is a specification of a lighting module according to the embodiment shown in FIG. For reference, the illumination module shown in Figs. 2 to 11 is an inverse representation of the illumination module shown in Fig.

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 shown in FIG. 1, the lumen value emitted upward is smaller than the lumen value emitted downward. Conversely, the lumen value emitted upward may be greater than the lumen value emitted downward.

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications 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:
130b:
150A: first case
150B: the second case
170a: first light excitation film
170b: second light 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 on both sides of the case and emitting light to the light guide plate;
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The light guide plate emits light from the light source unit through the upper surface and the lower surface,
The amount of light emitted through the upper surface of the light guide plate and the amount of light emitted through the lower surface of the light guide plate are different from each other,
Wherein the lower surface of the light guide plate includes a protrusion,
Wherein the case has a receiving groove into which the projection is inserted. The method according to claim 1,
And the case includes a first case and a second case each of which surrounds the light source part and both sides of the light guide plate. The method according to claim 1,
Wherein 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 another side of the light guide plate,
Wherein the pattern is a plurality of patterns arranged in a line between the first light source part and the second light source part. The method of claim 3,
Wherein the plurality of patterns are disposed at the center of the light guide plate. The method of claim 3,
Wherein the plurality of patterns are disposed closer to either the upper surface or the lower surface of the light guide plate. 3. The method of claim 2,
Wherein each of the first case and the second case includes an upper case disposed on an upper portion of the light guide plate and a lower case disposed on a lower portion of the light guide plate,
Wherein each of the upper case and the lower case includes a base portion and an extended portion extending in a direction perpendicular to an inner surface of the base portion,
Wherein the length of the extension of the upper case is different from the length of the extension of the lower case. The method according to claim 4 or 5,
Wherein the 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 4 or 5,
Wherein the plurality of patterns comprises at least one of a circle, an ellipse, and a slot shape. The method of claim 3,
Wherein the first light source portion includes a warm white light emitting element and the second light source portion includes a cool white light emitting element. The method according to claim 1,
And a light 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 according to claim 1,
And a diffusion plate disposed on at least one of the upper surface and the lower surface of the light guide plate. A light guide plate having a predetermined pattern;
First and second light emitting devices disposed on both sides of the light guide plate;
First and second cases surrounding the first and second light emitting devices and both sides of the light guide plate, respectively; And
And a photo excitation film disposed between the light guide plate and the first and second light emitting elements for converting the wavelength of light from the first and second light emitting elements,
The light guide plate emits light from the first and second light emitting elements through the upper surface and the lower surface,
The amount of light emitted through the upper surface of the light guide plate and the amount of light emitted through the lower surface of the light guide plate are different from each other,
Wherein the first and second light emitting devices are disposed on first and second substrates respectively disposed on both sides of the light guide plate,
Wherein a thickness of the light guide plate is smaller than a width of the first and second substrates. 13. The method of claim 12,
Wherein the pattern is formed on upper and lower surfaces of the light guide plate. 13. The method of claim 12,
The pattern has semi-elliptical or semi-circular shapes,
Wherein the pattern is disposed such that a flat portion in the form of a half ellipse or a half circle is parallel to the upper surface and the lower surface of the light guide plate. delete delete

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