KR101948144B1 - backlight unit and illumination system using the same - Google Patents

Abstract

The present invention relates to a backlight unit and an illumination system using the same, and more particularly, to a backlight unit and a lighting system using the same, which includes a first reflector, a second reflector, a light source module disposed between the first reflector and the second reflector, wherein the bracket includes a body portion including first, second, third, and fourth sections, a first support portion protruding in a first direction from the first section of the body portion, And a second support portion protruding from the second section in a first direction, and a distance value between the first support portion and the second support portion may be greater than a thickness value of the first support portion or the second support portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight unit and an illumination system using the same,

An embodiment relates to a backlight unit and an illumination system using the same.

Typically, typical large-sized display devices include a liquid crystal display (LCD), a plasma display panel (PDP), and the like.

Unlike a self-luminous PDP, a backlight unit is indispensable because of the absence of its own light emitting device.

The backlight unit used in the LCD is divided into an edge type backlight unit and a direct-type backlight unit according to the position of the light source. In the edge type, a light source is disposed on the right and left sides or upper and lower sides of the LCD panel, Since the light is uniformly distributed over the surface, uniformity of light is good and the thickness of the panel can be made very thin.

The direct-type method is generally used for a display of 20 inches or more, and since the light source is arranged at a lower portion of the panel, the light efficiency is higher than that of the edge method. Thus, it is mainly used for a large display requiring high brightness.

CCFL (Cold Cathode Fluorescent Lamp) is used as a light source of the backlight unit of the conventional edge method or direct-down type.

However, since the backlight unit using CCFL is always supplied with power to the CCFL, a considerable amount of power is consumed, and a color reproduction ratio of about 70% as compared with CRT and environmental pollution problems caused by the addition of mercury are pointed out as disadvantages.

BACKGROUND ART [0002] As a substitute product for solving the above problem, researches on a backlight unit using an LED (Light Emitting Diode) have been actively conducted.

When the LED is used as a backlight unit, it is possible to partially turn on / off the LED array, thereby drastically reducing the power consumption. In the case of the RGB LED, the color reproduction range specification exceeding 100% of the National Television System Committee (NTSC) So that a more vivid image quality can be provided to the consumer.

1 is a sectional view showing a general backlight unit.

1, the backlight unit includes a light guide plate 2, a reflector 3, an optical member 4, a light source module 5, .

The backlight unit may further include a top chassis 6, a bottom chassis 7, and a panel guide module 8.

Here, the panel guide module 8 can support the display panel 9, and the top chassis 6 can be connected to the panel guide module 8 and the bottom chassis 7.

Next, the light guide plate 2 has a reflector 3 disposed on a lower surface thereof, and an optical member 4 disposed on an upper surface thereof.

Next, the light source module 5 includes a substrate 5b and a light source 5a arranged on the substrate 5b. The light source module 5 may be disposed on both sides of the light guide plate 2.

The backlight unit having such a structure can uniformly diffuse the light using the light guide plate 2, but the whole backlight unit is not only heavy because of the light guide plate 2, but also causes a rise in price.

Therefore, it will be necessary to develop a backlight unit capable of uniformly diffusing light even without the light guide plate 2 in the future.

Embodiments provide a backlight unit capable of reducing the size of a bezel by disposing a bracket capable of simultaneously supporting a panel and an optical member, and an illumination system using the same.

In addition, the embodiment is intended to provide a backlight unit having an air guide by disposing a bottom cover having an inclined surface without a light guide plate, and an illumination system using the backlight unit.

An embodiment includes a first reflector, a second reflector, a light source module disposed between the first reflector and the second reflector, and a bracket disposed in the first reflector and the light source module, A body portion including a first, a second, a third, and a fourth section; a first support portion protruding from the first section of the body portion in a first direction; and a second support portion extending from the second section of the body portion in the first direction And the distance between the first and second supports may be greater than the thickness of the first or second support.

Here, the distance between the first and second supports may be about 1.01 - 5 times greater than the thickness of the first or second support.

Also, the distance between the first and second supports may be two to three times greater than the thickness of the first or second support.

The distance between the first and second support portions may be about 1.5 - 2.5 mm.

Then, the thickness value of the first support portion and the thickness value of the second support portion may be equal to each other.

Next, the length between the opposite ends of the first support portion and the length between the opposite ends of the second support portion may be equal to each other.

The first support portion may include a projection bar projecting from a lower surface facing the second support portion.

Here, the first projection bar is disposed in the edge region of the first support portion, and the surface of the projection bar may be curved.

The first support portion may have a groove on the upper surface thereof, and the groove may correspond to the projection bar.

Next, a first hole and a second hole are disposed on the upper surface of the first support portion, and the first hole and the second hole may be adjacent to each other.

Next, the second support portion may include a second stopper protruding from the upper surface facing the first support portion.

The second stopper may be disposed in a central region of the second support portion, and the surface of the second stopper may be curved.

Next, a second reflector may be disposed on the lower surface of the second support portion.

Further, the light source module may be disposed in the third section of the body section, and the second reflector may be disposed in the fourth section of the body section.

And, the thickness of the fourth section of the body portion may be greater than the thickness of the first, second, and third sections of the body portion.

The bracket may then include a fastening portion projecting from the second section of the body portion in a second direction opposite to the first direction and the bracket may include a fastening portion projecting in a first direction from a fourth section of the body portion have.

Here, the fastening portion may include at least one fastening hole.

The bracket may include a first stopper disposed on the upper surface of the first support portion. The first stopper includes a third hole and a fastening protrusion on the lower surface facing the first support portion And the third hole and the fastening protrusion may be adjacent to each other.

Here, the thickness of the first stopper may be thicker than the thickness of the first support portion or the second support portion.

At this time, the thickness of the first stopper may be about 1 to 3 mm.

Further, the embodiment includes a first reflector, a second reflector, a light source module disposed between the first reflector and the second reflector, and a bracket disposed in the first reflector and the light source module, The bracket includes a body portion including first, second, third, and fourth sections, a first support portion projecting in a first direction from a first section of the body portion and including a first stopper, Wherein the first stopper is detachably attached to the first support by at least one fastening member and the second stopper is detachably attached to the first support by the at least one fastening member, Protrudes from the upper surface of the second support portion and is integrally fixed to the second support portion, and the thickness of the first stopper may be thicker than the thickness of the second stopper.

Here, the distance between the first and second supports may be about 1.01 - 5 times greater than the thickness of the first or second support.

The first support portion includes a first hole and a second hole. The first stopper includes a third hole and a fastening protrusion. The first hole of the first support portion and the first stopper, And the fastening protrusion of the first stopper may be inserted into the second hole of the first support portion.

The light source module may be disposed in the third section of the body part, and the second reflector may be disposed in the fourth section of the body part.

Further, the thickness of the first stopper may be thicker than the thickness of the first support portion or the second support portion.

Further, the embodiment may further include an optical member disposed at a predetermined interval from the first reflector, and an air guide may be formed in a space between the first reflector and the optical member.

Embodiments can reduce the size of the bezel and the thickness of the backlight unit without an additional panel guide module by disposing a bracket capable of simultaneously supporting the display panel and the optical member.

Further, in the embodiment, by disposing the air guide bottom cover having the inclined surface without using the light guide plate, the weight is light, the manufacturing cost is low, and the uniform brightness can be provided.

Therefore, the economical and reliability of the backlight unit can be improved.

1 is a cross-sectional view showing a typical backlight unit
2 is a sectional view for explaining a backlight unit of a two-edge type according to the embodiment
3 is a sectional view showing a bracket according to the first embodiment
4A to 4C are cross-sectional views showing the thicknesses of the first and second support portions of the bracket
5A to 5C are cross-sectional views showing the lengths of the first and second support portions of the bracket
6A and 6B are views showing a protruding bar of the first support portion of the bracket;
7 is a perspective view showing a groove of the first support portion of the bracket;
8 is a perspective view showing a hole of the first support portion of the bracket;
9 is a sectional view showing the second stopper of the second support portion of the bracket
10 and 11 are cross-sectional views showing the body portion of the bracket
12 is a sectional view showing the bracket according to the second embodiment
13 is a sectional view showing the bracket according to the third embodiment
14 is a sectional view showing a bracket having a first stopper
Figs. 15A and 15B are perspective views showing the first stopper of Fig. 14
Fig. 16 is a perspective view showing the fastening of the first stopper of Fig. 14
17 is a perspective view showing the fastening of the bracket having the first stopper and the bottom cover
18 is a sectional view showing the thicknesses of the first stopper and the second stopper of the bracket
19A to 19D are views for explaining the arrangement relationship between the light source module and the first and second reflectors
20A to 20D are views showing a first reflector having an inclined plane
Figs. 21A to 21D are views showing a first reflector having a reflection pattern
22 is a sectional view showing a reflecting surface of the second reflector
23 is a perspective view showing the optical member
24 is a view showing a display module having a backlight unit according to an embodiment
25 and 26 are views showing a display device according to an embodiment

Hereinafter, embodiments will be described with reference to the accompanying drawings.

In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure is formed "on" or "under" a substrate, each layer The terms " on "and " under " encompass both being formed" directly "or" indirectly " In addition, the criteria for above or below each layer will be described with reference to the drawings.

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.

2 is a cross-sectional view illustrating a backlight unit of a two-edge type according to an embodiment.

2, the backlight unit includes a light source module 100, first and second reflectors 200 and 300, a bottom cover 400, a bracket 500, an optical member (not shown) 600).

Here, the light source module 100 may be disposed between the first reflector 200 and the second reflector 300 and adjacent to the first reflector 200 or the second reflector 300.

In some cases, the light source module 100 may be spaced apart from the second reflector 300 at the same time that the light source module 100 contacts the first reflector 200, or may be disposed at a distance from the first reflector 300 200 at regular intervals.

Alternatively, the light source module 100 may be spaced apart from the first reflector 200 and the second reflector 300, or may be in contact with the first reflector 200 and the second reflector 300 at the same time .

The light source module 100 may include a substrate 100b having an electrode pattern and at least one light source 100a disposed on the substrate 100b.

Here, the light source 100a of the light source module 100 may be a top view type light emitting diode.

In some cases, the light source 100a may be a side view type light emitting diode.

The substrate 100b may be a PCB (Printed Circuit Board) substrate made of any one material selected from the group consisting of polyethylene terephthalate (PET), glass, polycarbonate (PC) and silicon (Si) have.

In addition, the substrate 100b may be a single layer PCB, a multilayer PCB, a ceramic substrate, a metal-core PCB, or the like.

Here, the substrate 100b may be formed of a reflective coating film and a layer of a reflective coating material, and may reflect the light generated by the light source 100b to the central region of the second reflector 300. [

The light source 100a may be a light emitting diode (LED) chip. The light emitting diode chip may be a blue LED chip or an ultraviolet LED chip, or may be a red LED chip, a green LED chip, a blue LED chip, ) LED chip, or a white LED chip.

The white LED may be realized by combining a yellow phosphor on a blue LED or by simultaneously using a red phosphor and a green phosphor on a blue LED, (Yellow phosphor), Red phosphor (Phosphor) and Green phosphor (Phosphor).

The first reflector 200 and the second reflector 300 are spaced apart from each other by a predetermined distance so as to have an air guide in an empty space between the first reflector 200 and the second reflector 300, have.

The first reflector 200 may be formed of one of a reflective coating film and a reflective coating material layer to reflect light generated from the light source module 100 toward the second reflector 300.

In addition, a sawtooth-shaped reflection pattern may be formed on the surface of the first reflector 200 facing the light source module 100, and the surface of the reflection pattern may be flat or curved.

The reason for forming the reflection pattern on the surface of the first reflector 200 is to reflect the light generated by the light source module 100 to the central region of the second reflector 300 so as to increase the brightness in the central region of the backlight unit to be.

The second reflector 300 may be supported by the bottom cover 400 and may be a metal having a high reflectance such as aluminum (Al), silver (Ag), gold (Au), titanium dioxide (TiO ₂ ) And may include a metal oxide.

The inclined surface of the second reflector 300 may be overlapped with at least one of the light source module 100 and the first reflector 200. The second reflector 300 may have an inclined surface, have.

Here, the inclined surface of the second reflector 300 may be inclined at an angle with respect to the surface of the first reflector 200, and the inclined surface may be a concave surface, a convex surface, a flat surface, ). ≪ / RTI >

Optionally, the second reflector 300 may include at least one inclined surface and at least one flat surface, wherein the plane of the second reflector 300 is parallel to the first reflector 200, It can be a parallel side.

Also, the second reflector 300 includes at least two inclined surfaces having at least one inflection point, and curvatures of the first and second inclined surfaces adjacent to each other around the inflection point may be different from each other.

Next, the bracket 500 may be disposed to be attached to the first reflector 200 and the light source module 100.

Here, the bracket 500 may include a body portion, a first support portion, and a second support portion. The first support portion and the second support portion of the bracket 500 may protrude from the body portion in a first direction.

The first support part of the bracket 500 supports the display panel 800 and the second support part of the bracket 500 can support the optical member 600. [

The distance value between the first and second support portions of the bracket 500 may be greater than the thickness values of the first support portion or the second support portion.

Here, the distance value between the first and second support portions of the bracket 500 may be about 1.01 - 5 times greater than the thickness values of the first support portion or the second support portion.

In some cases, the distance value between the first and second support portions of the bracket 500 may be about two to three times greater than the thickness values of the first and second support portions.

As another example, the distance value between the first and second support portions of the bracket 500 may be about 1.5 to 2.5 mm.

The thickness values of the first and second support portions of the bracket 500 may be equal to each other.

The length between both ends of the first support portion of the bracket 500 may be the same as the length between both ends of the second support portion of the bracket 500.

In addition, the bottom cover 400 may support the second reflector 300, which may include a conductibility material.

Here, the entire bottom cover 400 may be a conductor, but in some cases, only a part of the bottom cover 400 may be a conductor.

The reason for including the conductive material in the bottom cover 400 is to prevent damage to the external circuit due to static electricity.

In some cases, the bottom cover 400 may have a partially inclined surface and may include a metal having a high reflectance such as aluminum (Al), silver (Ag), gold (Au), titanium dioxide (TiO ₂ ) Or a metal oxide.

The optical member 600 may be disposed at a predetermined interval from the second reflector 300.

An air guide area may be formed in the space between the second reflector 300 and the optical member 600.

Here, the optical member 600 may have a concavo-convex pattern on its upper surface.

The optical member 600 diffuses the light emitted from the light source module 100 and may form a concave-convex pattern on the upper surface to increase the diffusion effect.

That is, the optical member 600 may be formed in several layers, and the concavo-convex pattern may be on the surface of the uppermost layer or any one layer.

The concavo-convex pattern may have a strip shape arranged along the light source module 100.

At this time, the concavo-convex pattern has protrusions on the surface of the optical member 600, and the protrusions are composed of a first surface and a second surface facing each other, and an angle between the first surface and the second surface may be an obtuse angle or an acute angle.

Optionally, the optical member 600 is made of at least one sheet, and may optionally include a diffusion sheet, a prism sheet, a brightness enhancement sheet, and the like.

Here, the diffusion sheet diffuses the light emitted from the light source, and the prism sheet guides the diffused light to the light emitting area, and the brightness diffusion sheet strengthens the brightness.

3 is a cross-sectional view showing a bracket according to the first embodiment.

3, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIG.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections 502a, 502b, 502c, and 502d.

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude from the second section 502b of the body portion 502 in the first direction.

The light source module 100 may be disposed in the third section 502c of the body 502 of the bracket 500 and the fourth section 502d of the body 502 of the bracket 500 may be provided with 2 reflector 300 and the bottom cover 400 may be disposed.

The distance d between the first support 504 and the second support 506 of the bracket 500 is greater than the thickness t1 of the first support 504 or the thickness t2 of the second support 506. [ It can be big.

If the distance d between the first support 504 and the second support 506 of the bracket 500 is greater than the thickness t1 of the first support 504 or the thickness t2 of the second support 506 It may be difficult to dispose the optical member (600 in FIG. 2) between the first support portion 504 and the second support portion 506 of the bracket 500.

This is because a fastening space according to the thickness of the optical member 600 must be ensured.

The distance d between the first support portion 504 and the second support portion 506 of the bracket 500 is set to be equal to the thickness value t1 of the first support portion 504 or the thickness value t2 of the second support portion 506 And can be about 1.01 - 5 times larger than that.

The distance d between the first support portion 504 and the second support portion 506 of the bracket 500 may be equal to the thickness value t1 of the first support portion 504 or the thickness value t2 of the second support portion 506 It can be about 2-3 times bigger than that.

For example, the distance d between the first support portion 504 and the second support portion 506 of the bracket 500 may be about 1.5 - 2.5 mm.

The thickness of the first support portion 504 and the thickness of the second support portion 506 of the bracket 500 may be equal to each other, but they may be different from each other.

The length between the opposite ends of the first support portion 504 of the bracket 500 may be the same as the length between the opposite ends of the second support portion 506, but may differ from case to case.

4A to 4C are cross-sectional views showing the thicknesses of the first and second support portions of the bracket.

4A to 4C, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIGS.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections 502a, 502b, 502c, and 502d.

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude from the second section 502b of the body portion 502 in the first direction.

4A, the thickness t1 of the first support portion 504 of the bracket 500 and the thickness t2 of the second support portion 506 may be equal to each other.

At this time, the thickness t1 of the first support portion 504 and the thickness t2 of the second support portion 506 of the bracket 500 may be about 0.3 - 1.5 mm.

If the thickness t1 of the first support portion 504 of the bracket 500 and the thickness t2 of the second support portion 506 are about 0.3 mm or less, the first support portion 504 supporting the display panel (800 in Fig. 2) And the second support portion 506 for supporting the optical member (600 in Fig. 2) may be warped or broken due to the weight of the display panel (800 in Fig. 2) or the optical member (600 in Fig.

When the thickness t1 of the first supporting portion 504 of the bracket 500 and the thickness t2 of the second supporting portion 506 are about 1.5 mm or more, the overall thickness of the backlight unit becomes thick and the weight of the backlight unit have.

4B, the thickness t1 of the first support portion 504 of the bracket 500 may be thicker than the thickness t2 of the second support portion 506. As shown in FIG.

4C, the thickness t1 of the first support portion 504 of the bracket 500 may be thinner than the thickness t2 of the second support portion 506. [

As described above, the thickness t1 of the first support portion 504 and the thickness t2 of the second support portion 506 of the bracket 500 are equal to the size and weight of the display panel (800 in Fig. 2) or the optical member (600 in Fig. 2) Accordingly, it can be manufactured in various ways.

5A to 5C are cross-sectional views showing the lengths of the first and second support portions of the bracket.

5A to 5C, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIGS.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections 502a, 502b, 502c, and 502d.

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude from the second section 502b of the body portion 502 in the first direction.

5A, the length L1 of the first support portion 504 of the bracket 500 and the length L2 of the second support portion 506 may be equal to each other.

At this time, the length L1 of the first support portion 504 and the length L2 of the second support portion 506 of the bracket 500 may be about 10-25 mm.

If the length L1 of the first support portion 504 of the bracket 500 and the length L2 of the second support portion 506 are about 10 mm or less, the display panel (800 in Fig. 2) supported by the first support portion 504 The arrangement of the optical member (600 in Fig. 2) supported by the second support portion 506 is unstable, so that the central region thereof may be bent downward.

When the length L1 of the first support portion 504 of the bracket 500 and the length L2 of the second support portion 506 are about 25 mm or more, the bezel area of the display device increases, .

5B, the length L1 of the first support portion 504 of the bracket 500 may be longer than the length L2 of the second support portion 506. [

5C, the length L1 of the first support portion 504 of the bracket 500 may be shorter than the length L2 of the second support portion 506. [

The length L1 of the first support portion 504 and the length L2 of the second support portion 506 of the bracket 500 are determined depending on the area of the display panel (800 in Fig. 2) or the optical member (600 in Fig. 2) Can be manufactured in various ways.

6A and 6B are views showing the projection bar of the first support portion of the bracket, wherein FIG. 6A is a sectional view and FIG. 6B is a perspective view.

6A and 6B, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. [

The first support portion 504 may include a projection bar 550 projecting from a lower surface 504b facing the second support portion 506. [

Here, the protruding bar 550 may be disposed at an edge region of the first support portion 504. [

The surface of the projection bar 550 may have a curved surface shape.

The reason is that when the optical member (600 of FIG. 2) is supported on the second support portion 506, the contact with the first support portion 504 causes damage to the edge region of the optical member (600 of FIG. 2) It is because.

Therefore, by disposing the protrusion bars 550 on the lower surface 504b of the first supporter 504, the protrusion bars 550 serve as a buffer for absorbing impacts due to the contact of the optical member (600 of FIG. 2) can do.

7 is a perspective view showing a groove of the first support portion of the bracket;

7, the first support portion 504 may include a projection bar 550 protruding from a lower surface 504b that faces the second support portion 506. As shown in FIG.

Here, the protrusion bar 550 may be disposed at the edge region of the first support portion 504, and the surface of the protrusion bar 550 may have a curved surface shape.

The first support portion 504 may be provided with a groove 512 on the upper surface 504a.

The grooves 512 of the first support portion 504 may be disposed in correspondence with the protrusion bars 550 disposed on the lower surface 504b of the first support portion 504.

 The reason why the groove 512 is disposed on the upper surface 504a of the first support 504 is that when the display panel 800 is supported by the first support 504, , Damage may occur to the edge region of the display panel (800 in Fig. 2).

Accordingly, by disposing the grooves 512 on the upper surface 504b of the first support portion 504, the grooves 512 can serve as a buffer for absorbing impacts due to the contact of the display panel 800 have.

8 is a perspective view showing a hole of the first support portion of the bracket;

As shown in FIG. 8, the first support portion 504 may include a first hole 521 and a second hole 523 on the upper surface 504a.

Here, the first hole 521 and the second hole 523 of the first support portion 504 may be disposed adjacent to each other.

The diameter of the first hole 521 and the diameter of the second hole 523 of the first support portion 504 may be the same or different from each other.

The reason for disposing the first hole 521 and the second hole 523 on the upper surface 504a of the first support portion 504 is that the display panel 800 of FIG. A stopper (not shown), which can block movement of the display panel (800 in FIG. 2), is disposed on the upper surface 504a of the first support portion 504, ).

The upper surface 504a of the first support portion 504 is provided with the first and second holes 504a so that a first stopper (not shown) may be fastened to the upper surface 504a of the first support portion 504, (521, 523) can be disposed.

The first support portion 504 may include a projection bar 550 protruding from a lower surface 504b facing the second support portion 506. [

Here, the protrusion bar 550 may be disposed at the edge region of the first support portion 504, and the surface of the protrusion bar 550 may have a curved surface shape.

The first support portion 504 may be provided with a groove 512 on the upper surface 504a.

The grooves 512 of the first support portion 504 may be disposed in correspondence with the protrusion bars 550 disposed on the lower surface 504b of the first support portion 504.

8, the second support portion 506 of the bracket 500 may include a second stopper 560 protruding from the upper surface 506a facing the first support portion 504 have.

Here, the second stopper 560 may be disposed in the central region of the second support portion 506, and the surface of the second stopper 560 may be curved.

At this time, the second stopper 560 can block the movement of the optical member (600 in Fig. 2) when the optical member (600 in Fig. 2) is disposed on the upper surface 506a of the second support portion 506 .

9 is a sectional view showing the second stopper of the second support portion of the bracket.

9, the second support portion 506 of the bracket 500 includes a second stopper 560 protruding from an upper surface 506a facing the first support portion 504 .

Here, the second stopper 560 may be disposed in the central region of the second support portion 506, and the surface of the second stopper 560 may be curved.

At this time, the second stopper 560 can block the movement of the optical member (600 in Fig. 2) when the optical member (600 in Fig. 2) is disposed on the upper surface 506a of the second support portion 506 .

The second support portion 506 of the bracket 500 may be provided with the first reflector 200 on the lower surface 506b.

The first support portion 504 may include a projection bar 550 protruding from a lower surface of the second support portion 506.

The height h1 of the protrusion bar 550 of the first support portion 504 and the height h2 of the second stopper 560 of the second support portion 506 may be the same or different from each other .

10 and 11 are sectional views showing a body portion of the bracket.

10 and 11, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections 502a, 502b, 502c, and 502d.

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude from the second section 502b of the body portion 502 in the first direction.

The light source module 100 and the first reflector 200 may be disposed on the third section 502c of the body 502 of the bracket 500. The light source module 100 and the first reflector 200 may be disposed on the body 502 of the bracket 500, And the second reflector 300 and the bottom cover 400 may be disposed in the fourth section 502d.

The first section 502a of the body 502 of the bracket 500 has a thickness t11 and the second section 502b of the body 502 of the bracket 500 has a thickness t12.

The third section 502c of the body 502 of the bracket 500 has a thickness t13 and the fourth section 502d of the body 502 of the bracket 500 may have a thickness t14.

10, the thickness t14 of the fourth section 502d of the body section 502 is greater than the thickness t1 of the first, second and third sections 502a, 502b, and 502c of the body section 502. In this case, t11, t12, and t13.

11, the thickness t14 of the fourth section 502d of the body section 502 is greater than the thickness t14 of the first, second, and third sections 502a, 502b, and 502c of the body section 502. [ May be the same as the thicknesses t11, t12, and t13.

As described above, the thickness of the body portion 502 of the bracket 500 can be variously designed according to the design of the bracket 500 according to the fastening shape.

12 is a sectional view showing a bracket according to the second embodiment.

12, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIG.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections (502a, 502b, 502c, and 502d in FIG. 10).

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude in the first direction from the second section of the body portion 502 (502b in FIG. 10).

The bracket 500 may also include a fastening portion 508 projecting from a second section (502b in FIG. 10) of the body portion 502 in a second direction opposite to the first direction.

Here, at least one fastening hole 525 may be formed in the fastening portion 508 of the bracket 500, and the fastening hole 525 may be fastened to the bottom cover 400 (FIG. 2).

The first support portion 504 may have a first hole 521 and a second hole 523 on the upper surface 504a.

The reason for disposing the first hole 521 and the second hole 523 on the upper surface 504a of the first support portion 504 is that the display panel 800 of FIG. A stopper (not shown), which can block movement of the display panel (800 in FIG. 2), is disposed on the upper surface 504a of the first support portion 504, ).

The upper surface 504a of the first support portion 504 is provided with the first and second holes 504a so that a first stopper (not shown) may be fastened to the upper surface 504a of the first support portion 504, (521, 523) can be disposed.

As described above, the first and second holes 521 and 523 of the first support portion 504 and the fastening hole 525 of the fastening portion 508 may have different hole sizes depending on the respective applications.

13 is a cross-sectional view showing a bracket according to the third embodiment.

13, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIG.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections (502a, 502b, 502c, and 502d in FIG. 10).

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude in the first direction from the second section of the body portion 502 (502b in FIG. 10).

In addition, the bracket 500 may include a fastening portion 510 protruding in a first direction from a fourth section (502d in FIG. 10) of the body portion 502.

Here, at least one fastening hole 526 may be formed in the fastening portion 510 of the bracket 500, and the fastening hole 526 may be fastened to the bottom cover 400 (FIG. 2).

The first support portion 504 may have a first hole 521 and a second hole 523 on the upper surface 504a.

The first and second holes 521 and 523 of the first support portion 504 and the fastening hole 526 of the fastening portion 510 may have different hole sizes depending on the respective applications.

14 is a sectional view showing a bracket having a first stopper.

14, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. As shown in FIG.

Here, the body portion 502 of the bracket 500 may include first, second, third, and fourth sections (502a, 502b, 502c, and 502d in FIG. 10).

The first support portion 504 of the bracket 500 may protrude from the first section 502a of the body portion 502 in the first direction.

The second support portion 506 of the bracket 500 may protrude in the first direction from the second section of the body portion 502 (502b in FIG. 10).

Here, a first stopper 570 may be fastened to the upper surface 504a of the first support portion 504.

At this time, the first stopper 570 can block the movement of the display panel (800 in Fig. 2) when the display panel (800 in Fig. 2) is disposed on the upper surface 504a of the first support portion 504 .

The thickness t3 of the first stopper 570 may be greater than the thickness t1 of the first support portion 504 of the bracket 500 or the thickness t2 of the second support portion 506 of the bracket 500. [

The reason for this is that the thickness of the display panel 800 in FIG. 2 is thicker than the thickness t1 of the first support portion 504 of the bracket 500 or the thickness t2 of the second support portion 506 of the bracket 500.

For example, the thickness t3 of the first stopper 570 may be about 1-3 mm.

Figs. 15A and 15B are perspective views showing the first stopper in Fig. 14, Fig. 15A showing the lower surface of the first stopper, and Fig. 15B showing the upper surface of the first stopper.

15A and 15B, the first stopper 570 includes a third hole 571 and a fastening protrusion (not shown) on a lower surface 570b facing the first support portion (504 in FIG. 14) 573 may be disposed.

Here, the first stopper 570 may be disposed such that the third hole 571 and the fastening protrusion 573 are adjacent to each other.

The first stopper 570 may penetrate the third hole 571 from the upper surface 570a of the first stopper 570 to the lower surface 570b of the first stopper 570.

The third hole 571 of the first stopper 570 corresponds to the first hole 521 disposed on the upper surface 504a of the first support portion 504, The protrusion 573 may correspond to the second hole 523 disposed on the upper surface 504a of the first support portion 504. [

Accordingly, the first stopper 570 can be fastened to the upper surface 504a of the first support (504 in Fig. 14).

16 is a perspective view showing the fastening of the first stopper in Fig.

16, a third hole 571 and a fastening protrusion 573 may be disposed on the lower surface of the first stopper 570 facing the first support portion 504. As shown in FIG.

The third hole 571 of the first stopper 570 corresponds to the first hole 521 disposed on the upper surface 504a of the first support portion 504, The protrusion 573 may correspond to the second hole 523 disposed on the upper surface 504a of the first support portion 504. [

That is, the first hole 521 of the first support portion 504 and the third hole 571 of the first stopper 570 correspond to each other so as to face each other in the second hole 523 of the first support portion 504 The fastening protrusion 573 of the first stopper 570 can be inserted.

Accordingly, the first stopper 570 can be fastened to the upper surface 504a of the first support (504 in Fig. 14).

17 is a perspective view showing the fastening of the bracket having the first stopper and the bottom cover.

17, the bracket 500 may include a body portion 502, a first support portion 504, and a second support portion 506. The bracket 500 may be attached to the bottom cover 400 .

The first stopper 570 may be disposed on the upper surface of the first support portion 504 of the bracket 500.

A third hole 571 is formed in the upper portion of the first stopper 570. The third hole 571 of the first stopper 570 corresponds to the first hole 521 of the first support portion 504 The first stopper 570 can be fastened to the first support portion 504 of the bracket 500 by an external fastening member.

The first stopper 570 fastened in this manner can block the movement of the display panel 800 when the display panel 800 is disposed on the first support portion 504 of the bracket 500.

The second support portion 506 of the bracket 500 may include a second stopper 560 projecting from the upper surface facing the first support portion 504. [

Here, the second stopper 560 may be disposed in a central region of the second support portion 506, and the second stopper 560 may be disposed such that the optical member 600 is disposed on the upper surface of the second support portion 506 The movement of the optical member 600 can be blocked.

18 is a sectional view showing the thicknesses of the first stopper and the second stopper of the bracket.

18, the bottom cover 400 can support the second reflector 300, and the brackets 500 can be disposed on both sides of the bottom cover 400, respectively.

The light source module 100 may be attached to the bracket 500.

Here, the bracket 500 may include a body portion, a first support portion, and a second support portion. The first support portion and the second support portion of the bracket 500 may protrude from the body portion in a first direction.

The first support portion of the bracket 500 supports the display panel 800 and the second support portion of the bracket 500 supports the optical member 600. [

A first stopper 570 is disposed on the first support portion of the bracket 500 to prevent the display panel 800 from moving.

A second stopper 560 is disposed on the second support portion of the bracket 500 to block the movement of the optical member 600. [

Here, the thickness t3 of the first stopper 570 may be thicker than the thickness t4 of the display panel 800. [

In some cases, the thickness t3 of the first stopper 570 may be equal to or thinner than the thickness t4 of the display panel 800. [

For example, the thickness t3 of the first stopper 570 may be about 1-3 mm.

The thickness t5 of the second stopper 560 may be thicker than the thickness t6 of the optical member 600. [

In some cases, the thickness t5 of the second stopper 560 may be equal to or thinner than the thickness t6 of the optical member 600. [

For example, the thickness t5 of the second stopper 560 may be about 1 - 2.2 mm.

The thickness t3 of the first stopper 570 may be thicker than the thickness t5 of the second stopper 560. [

This is because the thickness of the optical member 600 may be thinner than that of the display panel 800.

In addition, the smaller the distance between the first support portion and the second support portion of the bracket 500, the easier it is to reduce the thickness of the backlight unit.

In some cases, the thickness t3 of the first stopper 570 may be equal to or thinner than the thickness t5 of the second stopper 560. [

19A to 19D are views for explaining the arrangement relationship between the light source module and the first and second reflectors.

19A is a view showing a light source module 100 disposed at a certain distance from the first reflector 200 and the second reflector 300 and FIG. FIG. 19C is a view showing a light source module 100 which is in contact with the first reflector 200 and is spaced apart from the second reflector 300 by a predetermined distance, FIG. 19D is a view showing the light source module 100 in contact with the first reflector 200, And a light source module 100 disposed at a predetermined distance from the first reflector 200 and contacting the second reflector 300. As shown in FIG.

19A, the light source module 100 may be spaced apart from the first reflector 200 by a first distance d31 and from the second reflector 300 by a second distance d32.

Here, the first distance d31 and the second distance d32 may be the same or different from each other.

For example, the first distance d31 may be smaller than the second distance d32.

This is because, if the first distance d31 is larger than the second distance d32, a hot spot phenomenon may occur.

19B, the light source module 100 may be in contact with the first reflector 200 and the second reflector 300.

Here, the light source module 100 can prevent hot spots by contacting the first and second reflectors 200 and 300, and can transmit light to a region far from the light source module 100, and the thickness of the entire backlight unit .

19C, the light source module 100 may contact the first reflector 200 and may be spaced apart from the second reflector 300 by a distance d.

Here, the light source module 100 can prevent hot spot by contacting the first reflector 200, and can transmit light to a region far from the light source module 100.

19D, the light source module 100 may contact the second reflector 300 and may be spaced apart from the first reflector 200 by a distance d.

FIGS. 20A to 20D are views showing a first reflector having an inclined surface, wherein FIG. 20A shows a case in which the inclined plane is a plane, and FIGS. 20B, 20C and 20D show a case in which the inclined plane is a curved surface.

20A to 20D, one surface of the first reflector 200 facing the second reflector 300 may have an inclined surface inclined at a predetermined angle with respect to the other surface of the first reflector 200 have.

Here, the inclination angle? Of the inclined plane may be inclined at an angle of 1 to 85 degrees with respect to a horizontal plane parallel to the other surface of the first reflector 200.

Therefore, the thickness of the first reflector 200 may gradually decrease as the distance from the light source module 100 increases, or may gradually increase.

That is, the thickness t1 of the first reflector 200 adjacent to the light source module 100 and the thickness t2 of the region far from the light source module 100 may be different from each other. As shown in FIGS. 20A and 20B, May be greater than the thickness t2 of the region distant from the light source module 100. In this case,

In some cases, the thickness t1 of the region adjacent to the light source module 100 may be smaller than the thickness t2 of the region far from the light source module 100, as shown in Figs. 20C and 20D.

Further, as shown in Fig. 20D, the first reflector 200 may include both the inclined plane and the plane.

That is, in the first reflector 200, an area adjacent to the light source module 100 may have an inclined surface, and an area far from the light source module 100 may have a plane.

Here, the length L1 of the inclined plane may be the same as the length L2 of the plane, or may be different from each other in some cases.

A predetermined reflection pattern may be formed on the surface of the first reflector 200.

21A to 21D are views showing a first reflector having a reflection pattern.

21A and 21C show that the reflection pattern 220 is a sawtooth shape and the surface of the reflection pattern 220 is a curved surface. .

Here, FIG. 21B is a curved surface in which the surface of the reflection pattern 220 is concave, and FIG. 21C is a curved surface in which the surface of the reflection pattern 220 is convex.

The size of the reflection pattern 220 may gradually increase from the end of the first reflector 200 to the open area as shown in FIG.

The reason why the reflection pattern 220 is formed on the first reflector 200 in this way is not only reflection of the light but also diffusion effect that uniformly spreads the light.

Accordingly, the reflective pattern 220 can be manufactured in various sizes in the corresponding region according to the entire luminance distribution of the backlight.

22 is a cross-sectional view showing a reflecting surface of the second reflector.

22, the backlight unit may include the light source module 100, the first and second reflectors 200 and 300, and the optical member 600.

The second reflector 300 may include a specular reflection region 300a and a diffusive reflection region 300b and the diffusive reflection region 300b may include a first diffusive reflection region 300b1 and a second diffusive reflection region 300b2 .

Here, the regular reflection area 300a serves to regularly reflect the incident light, and the irregular reflection area 300b can diffuse the incident light irregularly. The regular reflection area 300a and the irregular reflection area 300b The light reflectance may be about 50 - 99.99%.

The first and second irregular reflection regions 300b1 and 300b2 may include a first reflection pattern that reflects the incident light to a lambertian distribution and a second reflection pattern that reflects the light to a Gaussian distribution. have.

Here, the first irregular reflection area 300b1 may have a smaller first reflection pattern than the second reflection pattern, and the second irregular reflection area 300b2 may have a larger first reflection pattern than the second reflection pattern.

In addition, the area ratio of the first and second irregular reflection areas 300b1 and 300b2 may be about 1: 1-5.

At this time, the area ratio of the regular reflection area 300a and the first irregular reflection area 300b1 may be about 1: 1 - 4, and the area ratio of the regular reflection area 300a and the second irregular reflection area 300b2 may be about 1: - It can be 20 days.

The reason why the area ratio between the regular reflection area 300a of the second reflector 300 and the first and second irregular reflection areas 300b1 and 300b2 is determined is that the area adjacent to the light source module 100, In order to reduce the difference in luminance between the light source and the light source.

That is, the second reflector 300 can provide a uniform luminance as a whole by appropriately adjusting the area ratio of the regular reflection area 300a and the first and second irregular reflection areas 300b1 and 300b2.

The first irregular reflection area 300b1 may be positioned between the regular reflection area 300a and the second irregular reflection area 300b2.

That is, the regular reflection area 300a of the second reflector 300 is located adjacent to the light source module 100 and the second irregular reflection area 300b2 of the second reflector 300 is located far away from the light source module 100 And the first irregular reflection area 300b1 of the second reflector 300 may be positioned between the regular reflection area 300a and the second irregular reflection area 300b2.

The reason for this arrangement is that in the case of the regular reflection area 300a of the second reflector 300, the light emitted from the light source module 100 is positioned adjacent to the light source module 100, In the case of the irregular reflection region 300b of the second reflector 300, the reflector 300 is located in the central region of the second reflector 300 and diffuses the incident light. to be.

The optical member 600 may be disposed at a predetermined interval from the second reflector 300 and an air guide area may be formed in the space between the second reflector 300 and the optical member 600 .

The concavo-convex pattern 620 may be included in the surface of the optical member 600.

23 is a perspective view showing the optical member.

As shown in FIG. 23, the optical member 600 may be formed in several layers, and the concave-convex pattern 620 may be on the uppermost layer or on the surface of any one layer.

Optionally, the optical member 600 is made of at least one sheet, and may optionally include a diffusion sheet, a prism sheet, a brightness enhancement sheet, and the like.

Here, the diffusion sheet diffuses the light emitted from the light source, and the prism sheet guides the diffused light to the light emitting area, and the brightness diffusion sheet strengthens the brightness.

As described above, the optical member 600 diffuses the light emitted from the light source module 100 and may form a concave-convex pattern 620 on the upper surface of the optical member 600 to increase the diffusion effect.

The concavo-convex pattern 620 may have a strip shape arranged along the light source module 100.

At this time, the concave-convex pattern 620 has a protrusion on the surface of the optical member 600, the protrusion is composed of a first surface and a second surface facing each other, and an angle between the first surface and the second surface is an obtuse angle or an acute angle .

Optionally, the optical member 600 is made of at least one sheet, and may optionally include a diffusion sheet, a prism sheet, a brightness enhancement sheet, and the like.

Here, the diffusion sheet diffuses the light emitted from the light source, the prism sheet guides the diffused light to the light emitting region, and the brightness diffusion sheet can enhance the brightness.

As described above, the embodiments can reduce the size of the bezel and the thickness of the backlight unit without providing an additional panel guide module by disposing a bracket capable of simultaneously supporting the display panel and the optical member.

Further, in the embodiment, by disposing the air guide bottom cover having the inclined surface without using the light guide plate, the weight is light, the manufacturing cost is low, and the uniform brightness can be provided.

Therefore, the economical and reliability of the backlight unit can be improved.

Also, the bracket having the first and second support portions described in the above-described embodiments, the first and second reflectors, and the light source module may be implemented as a display device, a pointing device, and an illumination system including them, The lighting system may include lamps, street lamps.

Such a lighting system can be used as an illumination light for collecting light by focusing a plurality of LEDs. In particular, it can be used as an embedded light (down light) to be embedded in a ceiling or a wall of a building so that the opening side of the shade can be exposed. have.

24 is a view showing a display module having a backlight unit according to an embodiment.

As shown in FIG. 24, the display module 20 may include a display panel 800 and a backlight unit 700.

The display panel 800 includes a color filter substrate 810 and a TFT (Thin Film Transistor) substrate 820 bonded to each other to maintain a uniform cell gap, A liquid crystal layer (not shown) may be interposed.

The upper polarizer 830 and the lower polarizer 840 may be disposed on the upper and lower sides of the display panel 800 and more specifically the upper polarizer 830 may be disposed on the upper surface of the color filter substrate 810 And the lower polarizer 840 may be disposed on the lower surface of the TFT substrate 820.

Although not shown, a gate and a data driver for generating a driving signal for driving the panel 800 may be provided on a side of the display panel 800.

25 and 26 are views showing a display device according to an embodiment.

25, the display device 1 includes a display module 20, a front cover 30 and a back cover 35 surrounding the display module 20, a driving unit 55 provided in the back cover 35, And a driving unit cover 40 surrounding the driving unit 55.

The front cover 30 may include a front panel (not shown) made of a transparent material transmitting light. The front panel may protect the display module 20 at regular intervals, and light emitted from the display module 20 So that an image displayed on the display module 20 is displayed from the outside.

The back cover 35 can be coupled with the front cover 30 to protect the display module 20.

A driving unit 55 may be disposed on one side of the back cover 35.

The driving unit 55 may include a driving control unit 55a, a main board 55b, and a power supply unit 55c.

The driving control unit 55a may be a timing controller and is a driving unit for adjusting the operation timing of each driver IC of the display module 20. The main board 55b may include a V-sync, an H- B resolution signal, and the power supply unit 55c is a driving unit for applying power to the display module 20. [

The driving part 55 may be provided on the back cover 35 and may be surrounded by the driving part cover 40.

The back cover 35 may include a plurality of holes to connect the display module 20 and the driving unit 55 and a stand 60 for supporting the display device 1.

26, the driving control unit 55a of the driving unit 55 is provided in the back cover 35, and the main board 55b and the power board 55c may be provided in the stand 60 have.

The driving unit cover 40 may cover only the driving unit 55 provided on the back cover 35.

In the embodiment, the main board 55b and the power board 55c are separately formed. However, the present invention is not limited thereto.

In yet another embodiment, the bracket having the first and second support portions described in the above embodiments, the first and second reflectors, and the light source module can be implemented by a display device, an indicating device, and an illumination system including the bracket, For example, the lighting system may include lamps, street lamps.

Such a lighting system can be used as an illumination light for collecting light by focusing a plurality of LEDs. In particular, it can be used as an embedded light (down light) to be embedded in a ceiling or a wall of a building so that the opening side of the shade can be exposed. have.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100: light source module 200: first reflector
300: Second reflector 400: Bottom cover
500: Bracket 502: Body part
504: first support portion 506: second support portion
600: optical member

Claims (17)

A first reflector;
A second reflector;
A light source module disposed between the first reflector and the second reflector; And,
And a bracket disposed on the first reflector and the light source module,
The bracket
A body portion including first, second, third and fourth sections;
A first support portion protruding in a first direction from a first section of the body portion; And
And a second support portion protruding from the second section of the body portion in the first direction,
The first support portion
And a projection bar protruding from a lower surface of the first support portion facing the second support portion,
Wherein the projection bar is disposed in an edge region of the first support portion, the surface of the projection bar includes a curved surface shape,
A groove is disposed on an upper surface of the first support portion, the groove corresponds to the projection bar,
Wherein a distance value between the first support portion and the second support portion is larger than a thickness value of the first support portion or the second support portion. The backlight unit according to claim 1, wherein a distance value between the first and second support portions is 1.01 - 5 times greater than a thickness value of the first support portion or the second support portion. The backlight unit according to claim 1, wherein a thickness value of the first support portion and a thickness value of the second support portion are equal to each other. delete [2] The apparatus of claim 1,
And a first hole and a second hole in an upper surface. [2] The apparatus of claim 1,
And a second stopper protruding from an upper surface of the second support portion facing the first support portion,
Wherein the second stopper is disposed in a central region of the second support portion, and the surface of the second stopper includes a curved shape. The backlight unit according to claim 1, wherein the first reflector is disposed on a lower surface of the second support portion. The backlight unit according to claim 1, wherein the light source module is disposed in a third section of the body section, and the second reflector is disposed in a fourth section of the body section. The backlight unit according to claim 1, wherein a thickness of the fourth section of the body section is thicker than a thickness of the first, second, and third sections of the body section. The bracket according to claim 1,
And a fastening portion protruding from a second section of the body portion in a second direction opposite to the first direction. The bracket according to claim 1,
And a fastening portion protruding from the fourth section of the body portion in the first direction. 12. The backlight unit according to claim 10 or 11, wherein the fastening portion includes at least one fastening hole. The bracket according to claim 1,
And a first stopper disposed on an upper surface of the first support portion,
Wherein the first stopper comprises:
A third hole and a fastening protrusion are disposed on a lower surface facing the first support portion, the third hole and the fastening protrusion are adjacent to each other,
The thickness of the first stopper is thicker than the thickness of the first support portion or the second support portion,
And the thickness of the first stopper is 1 - 3 mm. A first reflector;
A second reflector;
A light source module disposed between the first reflector and the second reflector; And,
And a bracket disposed on the first reflector and the light source module,
The bracket
A body portion including first, second, third and fourth sections;
A first support portion protruding from a first section of the body portion in a first direction, the first support portion including a first stopper;
And a second support portion protruding from the second section of the body portion in the first direction and including a second stopper,
The first stopper is detachably attached to the first support portion by at least one fastening member,
The second stopper protrudes from the upper surface of the second support portion and is integrally fixed to the second support portion,
Wherein the thickness of the first stopper is thicker than the thickness of the second stopper. 15. The apparatus of claim 14, wherein the first support comprises a first hole and a second hole,
The first stopper includes a third hole and a fastening protrusion,
Wherein the first hole of the first support portion and the third hole of the first stopper correspond to each other and the fastening protrusion of the first stopper is inserted into the second hole of the first support portion. The optical module according to any one of claims 1 to 3, 5 to 11, and 13 to 15, further comprising an optical member arranged at a predetermined interval from the first reflector Wherein an air guide is formed in a space between the first reflector and the optical member. A lighting system comprising the backlight unit according to any one of claims 1 to 3, 5 to 11, and 13 to 15.

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