KR20130113029A - Illumination unit and display apparatus for using the same - Google Patents

Abstract

PURPOSE: A lighting unit used in a wide indoor space and a display device using the same are provided to implement even brightness by using a reflector for an air guide. CONSTITUTION: A second reflector (200) is arranged on one side of a first reflector (300). A third reflector is arranged on the other side of the first reflector. A light source module (100) is arranged between the first reflector and the second reflector. The second reflector is faced with the first reflector. The third reflector is faced with the light source module. [Reference numerals] (AA) Air guide

Description

[0001] The present invention relates to a lighting unit and a display apparatus using the same.

The embodiment relates to a lighting unit and a display device using the same.

In general, a down light is a lighting method that drills a hole in a ceiling and embeds a light source therein, and is widely used as an architectural lighting technique for integrating lighting and buildings.

Such a landfill is a structure embedded in a ceiling, and has a merit that the ceiling scene is arranged because there is almost no exposure of the lighting apparatus, and furthermore, the ceiling scene is darkened, which is a suitable method for producing an atmospheric indoor space .

1 is a view showing a general lighting unit.

As shown in Fig. 1, the illumination unit comprises a light source module 1 and a reflector 2 for setting the emission directivity angle of the light emitted from the light source module 1. In Fig.

Here, the light source module 1 may include at least one LED light source 1a provided on a printed circuit board (PCB) 1b.

The reflector 2 collects the light emitted from the LED light source 1a and allows the light to be emitted through the opening with a predetermined directional angle and has a reflecting surface on the inner side.

As described above, the illumination unit can be used as an illumination light for collecting light by collecting a plurality of LED light sources 1a. In particular, the illumination unit is embedded in a ceiling or wall of a building to expose the opening side of the reflector 2 (Down light) to be able to be used.

However, such a lighting unit structure is suitable for a narrow indoor space rather than a wide indoor space, and a large number of LED light sources 1a may be required.

Therefore, in the future, it will be necessary to develop a lighting unit suitable for a large indoor space even with a small number of LED light sources.

Embodiments provide a lighting unit suitable for a large indoor space and a display device using the same using a reflector having some inclined surfaces.

Embodiments include a first reflector, a second reflector disposed on one side of the first reflector, a third reflector disposed on the other side of the first reflector, and a light source disposed between the first reflector and the second reflector. And a module, wherein the second reflector is spaced apart from one end of the first reflector to face the first reflector, and the third reflector is disposed at the other end of the first reflector. Disposed so as to face the module, the third reflector comprising a lower surface disposed adjacent to the first reflector and an upper surface facing the lower surface, wherein the first distance between the lower surface and the upper surface of the third reflector is: It may be narrower than the second distance between the first reflector and the second reflector.

Here, the second distance between the first reflector and the second reflector may increase as the distance from the light source module increases.

In this case, the ratio of the first distance and the second distance may be about 1: 1.01-30.

The reflective surface of the second reflector and the reflective surface of the third reflector may be perpendicular to each other.

Subsequently, the reflectance of the second reflector and the reflector of the third reflector may be different from each other.

Here, the reflective surface of the second reflector may be a specular reflection surface, and the reflective surface of the third reflector may be a regular reflection surface or a diffuse reflection surface.

In addition, the reflective surface of the first reflector and the reflective surface of the second reflector may face each other and may not be parallel to each other.

Next, the first reflector may include at least one inflection point and may include first and second inclined surfaces adjacent to the inflection point.

Here, the first inclined surface of the first reflector may be a curved surface having a first radius of curvature, and the second inclined surface of the first reflector may be a curved surface having a second radius of curvature.

In this case, the first radius of curvature and the second radius of curvature may be different from each other.

The first inclined surface of the first reflector may be a specular reflection surface, and the second inclined surface of the first reflector may be a regular reflection surface or a diffuse reflection surface.

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

Here, one end of the optical member may contact the second reflector, and the other end of the optical member may contact the third reflector.

The lower surface of the optical member and the reflecting surface of the first reflector face each other, and the third distance between the lower surface of the optical member and the reflecting surface of the first reflector is the first passing through any point of the lower surface of the optical member. The distance between the horizontal line and the second horizontal line passing through a point of the reflective surface of the first reflector, which increases and decreases away from the light source module.

Then, the optical member may include a specific point having a maximum distance from the first reflector, and the specific point of the optical member may have a fourth distance from the central point of the optical member. have.

Here, the fourth distance may be wider than the maximum distance between the optical member and the first reflector.

In this case, the ratio between the maximum distance and the fourth distance may be about 1: 1.01-2.

And, a fourth distance between the specific point of the optical member and the central point of the optical member is the first vertical line passing through the specific point of the optical member and the light emitting surface of the light source module. It may be narrower than the fifth distance between the two vertical lines.

Here, the ratio between the fourth distance and the fifth distance may be about 1: 1.1-3.

Further, a fifth distance between the first vertical line passing through a specific point of the optical member and the second vertical line passing through the light emitting surface of the light source module is the third vertical line passing through the central point of the optical member and the light source module. It may be narrower than the sixth distance between the second vertical line passing through the emitting surface of the.

Subsequently, a specific point of the optical member may be located between one end of the optical member adjacent to the light source module and a central point of the optical member.

Next, a seventh distance between the first vertical line passing through a specific point of the optical member and the fourth vertical line passing through one point of one end of the optical member adjacent to the light source module is a specific point of the optical member. It may be wider than the fourth distance between the first vertical line passing through) and the third vertical line passing through the central point of the optical member.

Here, the ratio between the fourth distance and the seventh distance may be about 1: 1.1-3.

The angle between the lower surface of the optical member and the reflective surface of the third reflector may be at right angles or obtuse angles.

Further, the embodiment further includes a cover member covering the end of the optical member, the fifth vertical line passing through one point of one end portion of the cover member adjacent to the third reflector and the half of the third reflector The eighth distance between the sixth vertical line passing through the slope is defined by the seventh vertical line passing through any point of one end portion of the cover member adjacent to the second reflector and the ninth vertical line passing through the side of the second reflector. It can be wider than nine distances.

Here, the ratio between the eighth distance and the ninth distance may be about 1.01-2: 1.

Meanwhile, another embodiment includes a first reflector, a second reflector disposed on one side of the first reflector, a third reflector disposed on the other side of the first reflector, and a first reflector between the first reflector and the second reflector. And a light source module disposed, and an optical member disposed at a predetermined interval from the first reflector, wherein the optical member includes a transmission area through which light is transmitted and a periphery of the transmission area. And a non-tansmission area through which light is not transmitted, wherein the optical member includes a specific point having a maximum distance from the first reflector, and includes a specific point of the optical member. May have a distance from a central point of the transmission region of the optical member.

Here, a specific point of the optical member may be disposed between the central point of the transmission region of the optical member and the second reflector.

Another embodiment includes a first reflector, a second reflector disposed on one side of the first reflector, a third reflector disposed on the other side of the first reflector, and a gap between the first reflector and the second reflector. One side of a cover member adjacent to the third reflector, including a light source module disposed in the first reflector, an optical member disposed at a predetermined interval from the first reflector, and a cover member covering the end of the optical member; The distance between the vertical line passing through any point of the end portion and the vertical line passing through the reflecting surface of the third reflector is equal to the vertical line passing through any point of one end portion of the cover member adjacent to the second reflector. 2 may be wider than the distance between the vertical lines passing through the side of the reflector.

Here, the optical member includes a transmission area through which light is transmitted and a non-tansmission area disposed around the transmission area and to which light is not transmitted, and the optical member includes a first reflector. It includes a specific point having a maximum distance from, and the specific point of the optical member may have a certain distance from the central point of the transmission region of the optical member.

Embodiments may use a light guide plate and a reflector for an air guide having some inclined surfaces to provide light weight, low manufacturing cost, and uniform luminance.

Therefore, the economics and reliability of the lighting unit are not only improved, but also suitable for a large indoor space.

1 is a cross-sectional view showing a general lighting unit
2 is a cross-sectional view illustrating a lighting unit according to an embodiment.
3A to 3C are cross-sectional views illustrating the arrangement relationship between the first, second and third reflectors of FIG. 2.
4 is a cross-sectional view showing the first reflector of FIG.
5 is a cross-sectional view showing the arrangement of the optical member according to the first embodiment;
6A to 6C are cross-sectional views showing the arrangement of the optical member according to the second embodiment.
7A to 7C are cross-sectional views showing the arrangement of the optical member according to the third embodiment.
8 is a sectional view showing an arrangement of an optical member according to a fourth embodiment;
9 is a sectional view showing an arrangement of an optical member according to a fifth embodiment;
10A to 10C are cross-sectional views showing the arrangement of the optical member according to the sixth embodiment.
11A and 11B are cross-sectional views showing reflective surfaces of the third reflector.
12A to 12C are cross-sectional views showing the arrangement of the cover member.
13 is a sectional view showing an arrangement of an optical member according to a seventh embodiment
14A to 14D are views for explaining an arrangement relationship between the light source module and the first and second reflectors.
15a to 15d show a first reflector having an inclined surface
16A-16D show a first reflector having a reflective pattern
17 is a perspective view showing an optical member
18 shows a display module with a lighting unit according to an embodiment
19 and 20 illustrate a display apparatus 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. In addition, the size of each component does not necessarily reflect the actual size.

2 is a cross-sectional view illustrating a lighting unit according to an embodiment.

As shown in FIG. 2, the embodiment includes a light source module 100, a first reflector 300, a second reflector 200, a third reflector 400 and an optical member 600. ) May be included.

In addition, in the embodiment, a cover member may be further disposed.

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

In some cases, the light source module 100 may be disposed to be spaced apart from the first reflector 300 at the same time as being in contact with the second reflector 200, or at the same time as being in contact with the first reflector 300. 200 may be spaced apart from each other.

Alternatively, the light source module 100 may be disposed apart from the second reflector 200 and the first reflector 300 by a predetermined distance, or may be in contact with the second reflector 200 and the first 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 printed circuit board (PCB) substrate made of any one material selected from polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon (Si), or may be formed in a film form. have.

In addition, the substrate 100b may selectively use 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 any one of a reflective coating film and a reflective coating material layer, and may reflect light generated by the light source 100b to the central region of the first reflector 300.

Subsequently, the light source 100a may be a light emitting diode chip, and the light emitting diode chip may include a blue LED chip or an ultraviolet LED chip, or a red LED chip, a green LED chip, a blue LED chip, and yellow green. ) It may be configured in a package form combining at least one or more of the LED chip, the 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).

Next, the second reflector 200 may be disposed at one edge of the first reflector 300, and the third reflector 400 may be disposed at the other edge of the first reflector 300.

Subsequently, the second reflector 200 may be disposed to be spaced apart from the first reflector 300 so as to be non-contact with an end portion of the first reflector 300.

That is, the second reflector 200 and the first reflector 300 may face each other at a predetermined interval so as to have an air guide in the empty space between the second reflector 200 and the first reflector 300. have.

In addition, the reflective surface 210 of the second reflector 200 may be disposed to face the first reflector 300 and may be formed of any one of a reflective coating film and a reflective coating material layer, generated from the light source module 100. The reflected light may be reflected toward the first reflector 300.

In addition, a sawtooth-shaped reflective pattern is formed on the reflective surface 210 of the second reflector 200, and the surface of the reflective pattern may be flat or curved.

The reason for forming the reflective pattern on the reflecting surface 210 of the second reflector 200 is to reflect the light generated by the light source module 100 to the central region and the edge region of the first reflector 300, thereby This is to increase the luminance in the center region and the edge region.

Subsequently, the third reflector 400 may be disposed at the other edge of the first reflector 300.

Here, the third reflector 400 may be disposed to contact the other end portion of the first reflector and face the light source module 100.

In some cases, the third reflector 400 may be spaced apart from the other end portion of the first reflector.

In addition, the reflective surface 410 of the third reflector 400 may be disposed to face the light source module 100, and may be formed of any one of a reflective coating film and a reflective coating material layer.

In this case, a sawtooth-shaped reflective pattern is formed on the reflective surface 410 of the third reflector 400, and the surface of the reflective pattern may be flat or curved.

Subsequently, the third reflector 400 may include a lower surface 400a and an upper surface 400b facing each other, and the lower surface 400a of the third reflector 400 may be connected to the first reflector 300. It may be contacted or spaced apart.

Here, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 may be narrower than the second distance D2 between the first reflector 300 and the second reflector 200. Can be.

At this time, the second distance D2 is the first reflector 300 which meets the first point which is one point of the reflective surface 210 of the second reflector 200 and the vertical line passing through the first point of the second reflector 200. As a distance between a second point, which is a point of the reflective surface 310 of, the horizontal line H passing through the second point of the first reflector 300 may be parallel to the reflective surface 210 of the second reflector 200. .

Thus, the ratio of the first distance D1 and the second distance D2 may be about 1: 1.01-30.

For example, the first distance D1 may be about 1-10 mm.

In some cases, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is equal to the second distance D2 between the first reflector 300 and the second reflector 200. May be identical to each other.

As another case, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is the second distance D2 between the first reflector 300 and the second reflector 200. It may be wider than that.

The second distance D2 between the first reflector 300 and the second reflector 200 may increase as the distance from the light source module 100 increases.

In addition, the reflective surface 210 of the second reflector 200 and the reflective surface 410 of the third reflector 400 may be perpendicular to each other.

However, in some cases, since the reflective surface 410 of the third reflector 400 may be inclined, the reflective surface 210 of the second reflector 200 and the reflective surface 410 of the third reflector 400 may be inclined. May not be perpendicular to each other.

In addition, the reflecting surface 210 of the second reflector 200 and the reflecting surface 410 of the third reflector 400 may have different reflectances.

For example, the reflecting surface 210 of the second reflector 200 may be a specular reflecting surface, and the reflecting surface 410 of the third reflector 400 may be a specular reflecting surface or a diffuse reflecting surface.

The reflective surface 310 of the first reflector 300 and the reflective surface 210 of the second reflector 200 are disposed to face each other, but may not be parallel to each other.

Subsequently, the first reflector 300 may include a metal or a metal oxide having high reflectance such as aluminum (Al), silver (Ag), gold (Au), titanium dioxide (TiO ₂ ), or the like.

In addition, the first reflector 300 may have an inclined surface at a portion thereof, and the inclined surface of the first reflector 300 may overlap at least one of the light source module 100 and the second reflector 200. have.

Here, the inclined surface of the first reflector 300 may be a surface inclined at an angle with respect to the surface of the second reflector 200, and the inclined surface may be a concave surface, a convex surface, or a flat surface. It may be at least one of).

In some cases, the first reflector 300 may include at least one inclined surface and at least one flat surface, and the plane of the first reflector 300 may be different from the second reflector 200. It may be a parallel plane.

In addition, the first reflector 300 includes at least two inclined surfaces having at least one inflection point, and the radius of curvature of the first and second inclined surfaces adjacent to the inflection point may be different from each other.

For example, the first inclined surface of the first reflector 300 may be an inclined surface inclined downward, and the second inclined surface of the first reflector 300 may be an inclined surface inclined upward.

Here, the first inclined surface of the first reflector 300 may have a first radius of curvature, the second inclined surface of the first reflector 300 may have a second radius of curvature, and the first radius of curvature and the second radius of curvature may be Can be different.

In addition, the first inclined surface of the first reflector 300 may be a specular reflection surface, and the second inclined surface of the first reflector 300 may be a regular reflection surface or a diffuse reflection surface.

In some cases, the first reflector 300 may have a plurality of inflection points, and the radius of curvature of the inclined surfaces adjacent to each inflection point P may be different from each other.

On the other hand, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in a space between the first reflector 300 and the optical member 600.

Here, the optical member 600 may have an uneven pattern on the upper surface.

The optical member 600 is to diffuse the light emitted from the light source module 100, and may form an uneven 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.

As such, the optical member 600 may be disposed at a predetermined distance from the second reflector 200 and the first reflector 300, and one end of the optical member 600 may be disposed at the second reflector ( 200, the other end of the optical member 600 may contact the third reflector 400.

Here, the lower surface of the optical member 600 and the reflective surface 310 of the first reflector 300 may face each other, and the lower surface of the optical member 600 and the reflective surface 310 of the first reflector 300 may face each other. The distance between) may increase and decrease as the distance from the light source module 100 increases.

At this time, the distance between the lower surface of the optical member 600 and the reflective surface 310 of the first reflector 300 is the first horizontal line and the first reflector 300 passing through any point of the lower surface of the optical member 600. It may mean the distance between the second horizontal line passing through any one point of the reflective surface (310).

In addition, the optical member 600 may include a specific point having a maximum distance from the first reflector 300, and the specific point of the optical member 600 may correspond to the optical member 600. It may be a distance from the central point of.

Here, the distance between the specific point of the optical member 600 and the central point of the optical member 600 may be wider than the maximum distance between the optical member 600 and the first reflector 300. Can be.

In some cases, the distance between a specific point of the optical member 600 and a central point of the optical member 600 is equal to the maximum distance between the optical member 600 and the first reflector 300. It may be the same.

In another case, the distance between a specific point of the optical member 600 and a central point of the optical member 600 is the maximum distance between the optical member 600 and the first reflector 300. It may be narrower than

In addition, in the embodiment, a cover member may be further disposed.

Here, the cover member (not shown) may cover the end of the optical member 600, one end portion and the third reflector 400 of the cover member (not shown) adjacent to the third reflector 400. Distance between the reflecting surface 410 of the cover member 410 may be wider than a distance between an end portion of a cover member (not shown) adjacent to the second reflector 200 and a side surface of the second reflector 200. .

In some cases, the distance between the one end portion of the cover member (not shown) adjacent to the third reflector 400 and the reflective surface 410 of the third reflector 400 is connected to the second reflector 200. It may be narrower than the distance between one side end portion of the adjacent cover member (not shown) and the side surface of the second reflector 200.

As another case, the distance between one side end portion of the cover member (not shown) adjacent to the third reflector 400 and the reflective surface 410 of the third reflector 400 is the second reflector 200. It may be equal to the distance between one side end portion of the cover member (not shown) adjacent to the side surface of the second reflector 200.

As described above, the embodiment can provide a light weight, low manufacturing cost, and uniform luminance by using an air guide reflector having a part of an inclined surface without using a light guide plate.

Therefore, the economics and reliability of the lighting unit are not only improved, but also suitable for a large indoor space.

3A to 3C are cross-sectional views illustrating the arrangement relationship between the first, second and third reflectors of FIG. 2.

As shown in FIGS. 3A-3C, an embodiment may include a first reflector 300, a second reflector 200, and a third reflector 400.

Here, the second reflector 200 may be disposed on one side of the first reflector 300, and the third reflector 400 may be disposed on the other side of the first reflector 300.

In this case, the second reflector 200 may be spaced apart from an end portion of the first reflector 300 to face the first reflector 300.

The third reflector 400 may be disposed on the other end portion of the first reflector 300 so as to face the light source module 100 of FIG. 2.

That is, the reflecting surface 210 of the second reflector 200 is disposed to face the reflecting surface 310 of the first reflector 300, and is not in contact with the reflecting surface 310 of the first reflector 300. The reflective surface 310 of the first reflector 300 may be spaced apart from the predetermined distance.

In addition, the reflecting surface 410 of the third reflector 400 is disposed to face the light source module (100 in FIG. 2), and the lower surface 400a of the third reflector 400 is disposed on the first reflector 300. Can be arranged adjacently.

Here, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 may be about 1-10 mm.

For example, the first distance D1 may be about 4-6 mm.

3A, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is the reflecting surface 310 and the second reflector of the first reflector 300. It may be narrower than the second distance D2 between the reflecting surfaces 210 of 200.

At this time, the second distance D2 is the first reflector 300 which meets the first point which is one point of the reflective surface 210 of the second reflector 200 and the vertical line passing through the first point of the second reflector 200. As a distance between a second point, which is a point of the reflective surface 310 of, the horizontal line H passing through the second point of the first reflector 300 may be parallel to the reflective surface 210 of the second reflector 200. .

In addition, the second distance D2 may include a second distance Min D2 of the minimum value and a second distance Max D2 of the maximum value.

As such, the reason why the second distance D2 includes the second distance Min D2 of the minimum value and the second distance Max D2 of the maximum value is because of the reflection surface 310 and the second surface of the first reflector 300. This is because the reflecting surfaces 210 of the reflector 200 are not parallel to each other.

That is, the reflective surface 310 of the first reflector 300 may have an inclined surface that is inclined downward with respect to the reflective surface 210 of the second reflector 200.

Therefore, the second distance D2 between the first reflector 300 and the second reflector 200 may increase as the distance from the light source module 100 in FIG. 2 increases.

Therefore, the distance between one point of one end of the second reflector 200 and one point of the third reflector 300 corresponding to the point may be the second distance Min D2 of the minimum value, The distance between one point of the other end of the second reflector 200 and any one point of the third reflector 300 corresponding to the point may be a second distance Max D2 of the maximum value.

Here, as shown in FIG. 3A, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is the reflective surface 310 of the first reflector 300 and the second reflector ( It may be narrower than the second distance D2 between the reflective surfaces 210 of the 200, where the second distance D2 may be a second distance Min D2 of a minimum value.

In this case, the ratio of the first distance D1 and the second distance D2 may be about 1: 1.01-30.

In some cases, as shown in FIG. 3B, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is between the first reflector 300 and the second reflector 200. It may be the same as the second distance D2.

As another example, as shown in FIG. 3C, the first distance D1 between the lower surface 400a and the upper surface 400b of the third reflector 400 is between the first reflector 300 and the second reflector 200. May be wider than the second distance D2.

In addition, the reflective surface 210 of the second reflector 200 and the reflective surface 410 of the third reflector 400 may be perpendicular to each other.

However, in some cases, since the reflective surface 410 of the third reflector 400 may be inclined, the reflective surface 210 of the second reflector 200 and the reflective surface 410 of the third reflector 400 may be inclined. May not be perpendicular to each other.

In addition, the reflecting surface 210 of the second reflector 200 and the reflecting surface 410 of the third reflector 400 may have different reflectances.

For example, the reflecting surface 210 of the second reflector 200 may be a specular reflecting surface, and the reflecting surface 410 of the third reflector 400 may be a specular reflecting surface or a diffuse reflecting surface.

As such, the reason for arranging the third reflector 400 is to reinforce the luminance even in a region far from the light source module 100 in FIG. 2 and to prevent light loss, thereby providing a uniform luminance as a whole.

The second reflector 200 reflects the central region of the first reflector 300 to increase the luminance in the central region of the lighting unit.

4 is a cross-sectional view illustrating the first reflector of FIG. 2.

As shown in FIG. 4, the embodiment may include a light source module 100, a first reflector 300, a second reflector 200, and a third reflector 400.

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

The second reflector 200 may be disposed on one side of the first reflector 300, and the third reflector 400 may be disposed on the other side of the first reflector 300.

That is, the second reflector 200 may be spaced apart from one end portion of the first reflector 300 to face the first reflector 300.

In addition, the third reflector 400 may be disposed to face the light source module 100 at the other end portion of the first reflector 300.

Subsequently, the first reflector 300 may include at least two inclined surfaces having at least one inflection point IP. The radius of curvature of the first and second inclined surfaces adjacent to the inflection point IP may be determined. These can be different from each other.

As shown in FIG. 4, the first reflector 300 may include first and second inclined surfaces on both sides of the inflection point IP.

Here, the first inclined surface of the first reflector 300 may be an inclined surface inclined downward, and the second inclined surface of the first reflector 300 may be an inclined surface inclined upward.

In this case, the first inclined surface of the first reflector 300 may have a first radius of curvature R1, the second inclined surface of the first reflector 300 may have a second radius of curvature R2, and the first radius of curvature R1 and the second The radius of curvature R2 may be different.

In addition, the first inclined surface of the first reflector 300 may be a specular reflection surface, and the second inclined surface of the first reflector 300 may be a regular reflection surface or a diffuse reflection surface.

In some cases, the first reflector 300 may have a plurality of inflection points, and the radius of curvature of the inclined surfaces adjacent to each inflection point P may be different from each other.

As another example, the first reflector 300 may include at least one inclined surface and at least one flat surface, wherein the plane of the first reflector 300 is the second reflector 200. May be parallel to the plane.

Here, the inclined surface of the first reflector 300 may be a surface inclined at an angle with respect to the surface of the second reflector 200, and the inclined surface may be a concave surface, a convex surface, or a flat surface. It may be at least one of).

Thus, the reason for forming the inclined surface on the first reflector 300 is that it is possible to provide uniform luminance as a whole without a light guide plate.

5 is a cross-sectional view showing the arrangement of the optical member according to the first embodiment.

As shown in FIG. 5, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the lower surface 600b of the optical member 600 and the reflective surface 310 of the first reflector 300 may face each other, and the lower surface 300b and the first reflector 300 of the optical member 600 may face each other. The third distance D3 between the reflecting surfaces 310 of) may increase and decrease as the distance from the light source module 100 increases.

At this time, the third distance D3 between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 may indicate any point of the lower surface 600b of the optical member 600. The distance between the first horizontal line H1 passing through and the second horizontal line H2 passing through any point of the reflective surface 310 of the first reflector 300 may be referred to.

For example, the reflective surface 310 of the first reflector 300 may include a first point P1 adjacent to the light source module 100, a third point P3 far from the light source module 100, and a first point P1 and a third point. When including the second point P2 between the points P3, the distance between the first point P1 and the lower surface 600b of the optical member 600 is equal to the lower surface 600b of the second point P2 and the optical member 600. It may be narrower than the distance between and larger than the distance between the third point P3 and the lower surface 600b of the optical member 600.

Therefore, the third distance D3 between the lower surface 300b of the optical member 600 and the reflective surface 310 of the first reflector 300 may increase and decrease as the distance from the light source module 100 increases.

This is because the reflecting surface 310 of the first reflector 300 is inclined with respect to the lower surface 300b of the optical member 600.

As such, the third distance D3 between the lower surface 300b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is one of the important factors in manufacturing the lighting unit having uniform luminance. Can be.

6A to 6C are cross-sectional views showing the arrangement of the optical member according to the second embodiment.

As illustrated in FIGS. 6A to 6C, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical. The fourth point D4 may be spaced apart from the central point CP of the member 600.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

6A, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is the optical member 600 and the first. It may be wider than the maximum distance Max D between the reflectors 300.

In this case, the ratio between the maximum distance Max D and the fourth distance D4 may be about 1: 1.01 −2.

For example, when the maximum distance Max D between the optical member 600 and the first reflector 300 is about 30-33 mm, between the specific point SP of the optical member 600 and the center point CP of the optical member 600. The fourth distance D4 may be 33.01-40 mm.

In some cases, as shown in FIG. 6B, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is equal to the optical member 600. The maximum distance Max D between the first reflectors 300 may be equal to each other.

As another example, as shown in FIG. 6C, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is the optical member 600. And may be narrower than the maximum distance Max D between the first reflector 300.

As such, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is an important factor in producing an illumination unit having uniform luminance. It may be one of the.

7A to 7C are cross-sectional views showing the arrangement of the optical member according to the third embodiment.

As shown in FIGS. 7A to 7C, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical. The fourth point D4 may be spaced apart from the central point CP of the member 600.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

Here, as shown in FIG. 7A, the fourth distance D4 between a specific point SP of the optical member 600 and a central point CP of the optical member 600 is a specific point of the optical member 600. The specific distance may be narrower than the fifth distance D5 between the first vertical line V1 passing through the SP and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100.

In this case, the ratio between the fourth distance D4 and the fifth distance D5 may be about 1: 1.1-3.

For example, when the fourth distance D4 between the specific point SP of the optical member 600 and the center point CP of the optical member 600 is about 33.01-40 mm, the first passing through the specific point SP of the optical member 600 The fifth distance D5 between the vertical line V1 and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100 may be about 60 mm to about 90 mm.

In some cases, as shown in FIG. 7B, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is equal to that of the optical member 600. The fifth distance D5 between the first vertical line V1 passing through the specific point SP and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100 may be the same.

As another example, as shown in FIG. 7C, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 is the optical member 600. It may be wider than a fifth distance D5 between the first vertical line V1 passing through the specific point SP of the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100.

As such, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 and the specific point of the optical member 600. The fifth distance D5 between the first vertical line V1 passing through the SP and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100 is important for producing an illumination unit having uniform luminance. It can be one of the elements.

8 is a cross-sectional view showing the arrangement of the optical member according to the fourth embodiment.

As shown in FIG. 8, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical. The central point CP of the member 600 may be separated by a distance.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

Here, a fifth distance D5 between the first vertical line V1 passing through a specific point SP of the optical member 600 and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100. Is a sixth distance D6 between the third vertical line V3 passing through the central point CP of the optical member 600 and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100. It may be narrower than

As such, the fifth distance between the first vertical line V1 passing through the specific point SP of the optical member 600 and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100. A sixth distance between D5 and a second vertical line V3 passing through the central point CP of the optical member 600 and the second vertical line V2 passing through the light emitting surface 110 of the light source 100a of the light source module 100. D6 may be one of the important factors in manufacturing an illumination unit having a uniform brightness.

9 is a cross-sectional view showing the arrangement of the optical member according to the fifth embodiment.

As shown in FIG. 9, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical. The central point CP of the member 600 may be separated by a distance.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

Here, the optical member 600 may be divided into a first region and a second region based on a center line passing through a central point CP of the optical member 600.

In this case, the first region of the optical member 600 may be adjacent to the light source module 100 and the second reflector 200, and the second region of the optical member 600 may be adjacent to the third reflector 400. have.

As shown in FIG. 9, the first region of the optical member 600 passes through one point of one end 610 of the optical member 600 adjacent to the light source module 100 and the second reflector 200. Between the vertical line and the third vertical line passing through the central point CP of the optical member 600, the second region of the optical member 600 is the other side of the optical member 600 adjacent to the third reflector 400. It may be between the tenth vertical line passing through any one point of the end 620 and the third vertical line passing through the central point CP of the optical member 600.

Subsequently, a specific point SP of the optical member 600 may be located in the first area of the optical member 600.

That is, the specific point SP of the optical member 600 includes a fourth vertical line passing through one point of one end 610 of the optical member 600 adjacent to the light source module 100 and the optical member 600. It may be located in the first region between the third vertical line passing through the central point CP of the center.

As such, the position of a specific point SP of the optical member 600 may be one of important factors in manufacturing an illumination unit having a uniform brightness.

10A to 10C are cross-sectional views showing the arrangement of the optical member according to the sixth embodiment.

As shown in FIGS. 10A to 10C, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical. The fourth point D4 may be spaced apart from the central point CP of the member 600.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

Here, as shown in FIG. 10A, one point of one end 610 of the first vertical line V1 passing through a specific point SP of the optical member 600 and the optical member 600 adjacent to the light source module 100. The seventh distance D7 between the fourth vertical line V4 passing through is the first vertical line V1 passing through a specific point SP of the optical member 600 and the central point CP of the optical member 600. It may be wider than the fourth distance D4 between the three vertical lines V3.

In this case, the ratio between the fourth distance D4 and the seventh distance D7 may be about 1: 1.1-3.

For example, when the fourth distance D4 between the specific point SP of the optical member 600 and the center point CP of the optical member 600 is about 33.01-40 mm, the specific point SP of the optical member 600 The seventh distance D7 between the first vertical line V1 passing through and the fourth vertical line V4 passing through one point of one end 610 of the optical member 600 adjacent to the light source module 100 may be about 60-90 mm. have.

In some cases, as shown in FIG. 10B, the first vertical line V1 passing through a specific point SP of the optical member 600 and one end 610 of the optical member 600 adjacent to the light source module 100. The seventh distance D7 between the fourth vertical line V4 passing through one point is defined as the central point CP of the first vertical line V1 passing through the specific point SP of the optical member 600 and the optical member 600. It may be equal to the fourth distance D4 between the passing third vertical lines V3.

As another example, as shown in FIG. 10C, the first vertical line V1 passing through a specific point SP of the optical member 600 and one end 610 of the optical member 600 adjacent to the light source module 100. The seventh distance D7 between the fourth vertical line V4 passing through one point is the central point CP of the first vertical line V1 passing through the specific point SP of the optical member 600 and the optical member 600. It may be narrower than the fourth distance D4 between the third vertical lines V3 passing through.

As such, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the optical member 600 and the specific point of the optical member 600. The seventh distance D7 between the first vertical line V1 passing through the SP and the fourth vertical line V4 passing through one point of one end 610 of the optical member 600 adjacent to the light source module 100 has a uniform luminance. It may be one of the important factors in making the lighting unit.

11A and 11B are sectional views showing the reflecting surface of the third reflector.

As shown in FIGS. 11A and 11B, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the third reflector 400 may be disposed to face the light source module 100 at the other end portion of the first reflector.

In addition, the reflective surface 410 of the third reflector 400 may be disposed to face the light source module 100, and may be formed of any one of a reflective coating film and a reflective coating material layer.

In this case, a sawtooth-shaped reflective pattern is formed on the reflective surface 410 of the third reflector 400, and the surface of the reflective pattern may be flat or curved.

Subsequently, the third reflector 400 may include a lower surface and an upper surface facing each other, and the upper surface of the third reflector 400 is disposed adjacent to the lower surface 600b of the optical member 600. The lower surface 400a of the third reflector 400 may be disposed adjacent to the first reflector 300.

Here, as illustrated in FIG. 11A, an angle θ11 between the lower surface 600b of the optical member 600 and the reflective surface 410 of the third reflector 400 may be perpendicular.

In some cases, as shown in FIG. 11B, the angle θ11 between the lower surface 600b of the optical member 600 and the reflective surface 410 of the third reflector 400 may be an obtuse angle.

As such, the reason for manufacturing the angle θ11 between the lower surface 600b of the optical member 600 and the reflective surface 410 of the third reflector 400 at right angles or obtuse angles is that of the light that may appear in the third reflector region. This is because hot spots can be prevented.

12A to 12C are cross-sectional views showing the arrangement of the cover member.

As shown in FIGS. 12A to 12C, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the cover member 500 may be disposed at an edge region of the optical member 600 to cover the end of the optical member 600.

Here, as shown in FIG. 12A, half of the fifth vertical line V5 and the third reflector 400 passing through one point of one end portion 510a of the cover member 500 adjacent to the third reflector 400. The eighth distance D8 between the sixth vertical line V6 passing through the slope 410 is the seventh passing through one point of one end portion 510b of the cover member 500 adjacent to the second reflector 200. It may be wider than the ninth distance D9 between the vertical line V7 and the ninth vertical line V9 passing through the side 211 of the second reflector 200.

In this case, the ratio between the eighth distance D8 and the ninth distance D9 may be about 1.01-2: 1.

For example, the eighth distance D8 may be about 3-7 mm.

In some cases, as shown in FIG. 12B, the fifth vertical line V5 and the third reflector 400 passing through one point of one end portion 510a of the cover member 500 adjacent to the third reflector 400 may be disposed. The eighth distance D8 between the sixth vertical line V6 passing through the reflective surface 410 of the surface passes through one point of one end portion 510b of the cover member 500 adjacent to the second reflector 200. It may be equal to the ninth distance D9 between the seventh vertical line V7 and the ninth vertical line V9 passing through the side surface 211 of the second reflector 200.

In another case, as shown in FIG. 12C, the fifth vertical line V5 and the third reflector 400 passing through one point of one end portion 510a of the cover member 500 adjacent to the third reflector 400 are shown. The eighth distance D8 between the sixth vertical line V6 passing through the reflecting surface 410 of the () is defined as one end of the one end portion 510b of the cover member 500 adjacent to the second reflector 200. It may be narrower than the ninth distance D9 between the passing seventh vertical line V7 and the ninth vertical line V9 passing through the side 211 of the second reflector 200.

As such, the fifth vertical line V5 passing through one point of one end portion 510a of the cover member 500 adjacent to the third reflector 400 and the reflective surface 410 of the third reflector 400 Eighth distance D8 between the sixth vertical line V6 passing through the second vertical line V7 and the seventh vertical line passing through any one point of one end portion 510b of the cover member 500 adjacent to the second reflector 200. The ninth distance between the ninth vertical lines V9 passing through the side surfaces 211 of the second reflector 200 may be one of important factors in manufacturing an illumination unit having uniform luminance.

For example, since the eighth distance D8 and the ninth distance D9 can prevent a hot spot phenomenon of light that may appear in the edge region of the optical member 600, the illumination unit having uniform luminance. It can be one of the important factors in the production.

13 is a sectional view showing the arrangement of the optical member according to the seventh embodiment.

As shown in FIG. 13, the optical member 600 may be disposed at a predetermined interval from the first reflector 300.

In addition, an air guide region may be formed in the space between the first reflector 300 and the optical member 600.

Here, one end of the optical member 600 may contact the second reflector 200, and the other end of the optical member 600 may contact the third reflector 400.

Subsequently, the cover member 500 may be disposed at an edge region of the optical member 600 to cover the end of the optical member 600.

In addition, the optical member 600 may include a transmission area through which light is transmitted and a non-tansmission area through which light is not transmitted.

Here, the transmission region of the optical member 600 may be disposed in the central region of the optical member 600, and the non-transmissive region of the optical member 600 may be disposed in the peripheral region of the optical member 600.

That is, the transmission region of the optical member 600 includes a seventh vertical line V7 passing through one point of one end portion of the cover member 500 adjacent to the second reflector 200, and the third reflector 400. It may be located between the fifth vertical line V5 passing through any point of one end portion (end portion) of the cover member 500 adjacent to the ().

The non-transmissive region of the optical member 600 includes the fourth vertical line V4 passing through one point of one end 610 of the optical member 600 and the cover member 500 adjacent to the second reflector 200. It may be located between the seventh vertical line V7 passing through any one point of one end portion (end portion).

In addition, the non-transmissive area of the optical member 600 is a portion of the cover member 500 adjacent to the tenth vertical line V10 passing through one point of the other end 620 of the optical member 600 and the third reflector 400. It may be located between the fifth vertical line V5 passing through any one point of one end portion.

Next, the optical member 600 may include a specific point SP having a maximum distance Max D from the first reflector 300, wherein the specific point SP of the optical member 600 is optical The fourth point D4 may be spaced apart from the central point CP of the transmission region of the member 600.

That is, the maximum distance Max D between the lower surface 600b of the optical member 600 and the reflecting surface 310 of the first reflector 300 is a specific point SP of the optical member 600 and the optical The distance between any one point of the reflective surface 310 of the first reflector 300 that meets the vertical line passing through the specific point SP of the member 600.

Here, the fourth distance D4 between the first vertical line V1 passing through the specific point SP of the optical member 600 and the third vertical line V3 passing through the central point CP of the transmission region of the optical member 600. May be wider than the maximum distance Max D between the optical member 600 and the first reflector 300.

In this case, the ratio between the maximum distance Max D and the fourth distance D4 may be about 1: 1.01 −2.

For example, when the maximum distance Max D between the optical member 600 and the first reflector 300 is about 30-33 mm, the specific point SP of the optical member 600 and the center of the transmission region of the optical member 600 The fourth distance D4 between the points CP may be 33.01-40 mm.

In some cases, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the transmission region of the optical member 600 is the optical member 600 and the first. The maximum distance Max D between the reflectors 300 may be equal to each other.

As another case, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the transmission region of the optical member 600 is defined by the optical member 600 and It may be narrower than the maximum distance Max D between one reflector 300.

As such, the specific point SP of the optical member 600 has a certain distance from the central point of the transmission region of the optical member 600, the specific point of the optical member 600 The SP may be disposed between the central point CP of the transmission region of the optical member 600 and the second reflector 200.

As such, the fourth distance D4 between the specific point SP of the optical member 600 and the central point CP of the transmission region of the optical member 600 produces a lighting unit having a uniform brightness. It may be one of the important factors.

14A to 14D are views for explaining an arrangement relationship between the light source module and the first and second reflectors.

FIG. 14A illustrates a light source module 100 spaced apart from the second reflector 200 and the first reflector 300 by a predetermined distance, and FIG. 14B simultaneously shows the second reflector 200 and the first reflector 300. FIG. 14C is a view showing the light source module 100 in contact with each other, and FIG. 14C is a view showing the light source module 100 contacting the second reflector 200 and being spaced apart from the first reflector 300 by a predetermined distance. The light source module 100 disposed at a predetermined distance from the second reflector 200 and in contact with the first reflector 300 is shown.

As shown in FIG. 14A, the light source module 100 may be spaced apart from the second reflector 200 by a first distance d31 and spaced apart from the first reflector 300 by a second distance d32.

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

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

The reason is that when the first distance d31 is greater than the second distance d32, a hot spot may occur.

Subsequently, as shown in FIG. 14B, the light source module 100 may contact the second reflector 200 and the first reflector 300.

Here, the light source module 100 is in contact with the first and second reflectors 200 and 300, thereby preventing hot spots and transmitting light to an area far from the light source module 100, and also the thickness of the entire backlight unit. You can also reduce the

As illustrated in FIG. 14C, the light source module 100 may be in contact with the second reflector 200 and may be spaced apart from the first reflector 300 by a distance d.

Here, the light source module 100 may be in contact with the second reflector 200 to prevent hot spots and transmit light to an area far from the light source module 100.

Next, as shown in FIG. 14D, the light source module 100 may contact the first reflector 300 and may be spaced apart from the second reflector 200 by a distance d.

15A to 15D are diagrams illustrating a first reflector having an inclined surface, in which FIG. 15A is a case in which the inclined surface is flat, and FIGS. 15B, 15C and 15D are cases in which the inclined surface is curved.

15A to 15D, one surface of the second reflector 200 facing the first reflector 300 may have an inclined surface that is inclined at an angle with respect to the other surface of the second reflector 200. have.

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

Therefore, the thickness of the second reflector 200 may decrease gradually or increase gradually away from the light source module 100.

That is, in the second reflector 200, the thickness t1 of the region 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. 15A and 15B, the light source module 100 The thickness t1 of the region adjacent to) may be greater than the thickness t2 of the region far from the light source module 100.

In some cases, as shown in FIGS. 15C and 15D, 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.

In addition, as shown in FIG. 15D, the second reflector 200 may include both an inclined surface and a plane.

That is, in the second 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 surface may be the same as the length L2 of the plane, or may be different from each other in some cases.

In addition, a predetermined reflection pattern may be formed on the surface of the second reflector 200.

16A-16D show a first reflector having a reflective pattern.

16A shows that the reflective pattern 220 is serrated, the surface of the reflective pattern 220 is flat, and FIGS. 16B and 16C show that the reflective pattern 220 is serrated, and the surface of the reflective pattern 220 is curved. Can be.

Here, FIG. 16B is a curved surface of which the surface of the reflective pattern 220 is concave, and FIG. 16C is a curved surface of which the surface of the reflective pattern 220 is convex.

In some cases, as shown in FIG. 16D, the size of the reflective pattern 220 may gradually increase from the end of the second reflector 200 toward the open area.

As described above, the reason why the reflective pattern 220 is formed on the second reflector 200 is because not only the reflection of the light but also the diffusion effect of uniformly spreading the light may be provided.

Therefore, the reflective pattern 220 may be manufactured in various sizes in the corresponding area according to the overall luminance distribution of the backlight.

17 is a perspective view showing an optical member.

As illustrated in FIG. 17, the optical member 600 may be formed of various layers, and the uneven pattern 620 may be formed on the top surface or the surface of 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 such, the embodiments may provide a light weight, a low manufacturing cost, and a uniform brightness by using a reflector for an air guide having some inclined surfaces without using a light guide plate.

Therefore, the economics and reliability of the lighting unit are not only improved, but also suitable for a large indoor space.

In addition, the first, second, third reflector and the light source module described in the above embodiments may be implemented as a display device, an indicator device, and a lighting system including the same. It may include.

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.

18 is a view showing a display module having a lighting unit according to an embodiment.

As shown in FIG. 18, 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.

19 and 20 illustrate a display apparatus according to an embodiment.

Referring to FIG. 19, the display apparatus 1 includes a display module 20, a front cover 30 surrounding the display module 20, a back cover 35, and a driver 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.

On the other hand, as shown in FIG. 20, the driving controller 55a of the driving unit 55 may be 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.

Although the main board 55b and the power board 55c are separately formed in the present embodiment, they may be formed as one integrated board, but are not limited thereto.

In yet another embodiment, the first, second, third reflector and light source modules described in the above-described embodiments may be implemented as a display device, an indicator device, and a lighting system including the same. It may include a lamp, a street lamp.

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 may be combined or modified with respect to other embodiments by those 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: second reflector
300: first reflector 400: third reflector
500: cover member 600: optical member

Claims (18)

A first reflector;
A second reflector disposed at one side of the first reflector;
A third reflector disposed on the other side of the first reflector; And,
A light source module disposed between the first reflector and the second reflector,
The second reflector is spaced apart from an end portion of the first reflector to face the first reflector,
The third reflector is disposed at the other end portion of the first reflector so as to face the light source module.
The third reflector,
A lower surface disposed adjacent to the first reflector, and an upper surface facing the lower surface,
And a first distance between the lower surface and the upper surface of the third reflector is narrower than the second distance between the first reflector and the second reflector. The lighting unit of claim 1, wherein a second distance between the first reflector and the second reflector increases as the distance from the light source module increases. The lighting unit according to claim 1, wherein a ratio of the first distance and the second distance is 1: 1.01-30. The lighting unit of claim 1, wherein the first distance is 1-10 mm. The illumination unit of claim 1, wherein the reflective surface of the second reflector and the reflective surface of the third reflector are perpendicular to each other. The illumination unit of claim 1, wherein the reflecting surface of the second reflector and the reflecting surface of the third reflector have different reflectances. The illumination unit according to claim 1, wherein the reflecting surface of the second reflector is a specular reflecting surface, and the reflecting surface of the third reflector is a specular reflecting surface or a diffuse reflecting surface. The illumination unit according to claim 1, wherein the reflecting surface of the first reflector and the reflecting surface of the second reflector face each other and are not parallel to each other. The method according to claim 1 or 2, wherein the first reflector,
At least one inflection point,
And a first and second inclined surfaces adjacent to the inflection point. The optical device of claim 1 or 2, further comprising an optical member disposed at a predetermined interval from the first reflector.
And an air guide region is formed in a space between the first reflector and the optical member. The lower surface of the optical member and the reflective surface of the first reflector face each other, and a third distance between the lower surface of the optical member and the reflective surface of the first reflector is lower than the lower surface of the optical member. And a distance between the first horizontal line passing through any one point of the surface and the second horizontal line passing through any one point of the reflective surface of the first reflector, wherein the illumination unit increases and decreases away from the light source module. The method of claim 10, wherein the optical member,
A specific point having a maximum distance from the first reflector,
A specific point of the optical member has a fourth distance from a central point of the optical member. The lighting unit of claim 12, wherein the fourth distance is wider than a maximum distance between the optical member and the first reflector. 13. The method of claim 12, wherein a fourth distance between a specific point of the optical member and a central point of the optical member is determined by the first vertical line passing through a specific point of the optical member and the Lighting unit narrower than a fifth distance between second vertical lines passing through the light emitting surface of the light source module. The illumination unit of claim 10, wherein an angle between the lower surface of the optical member and the reflective surface of the third reflector is at right angles or obtuse angles. The method of claim 10, further comprising a cover member for covering the end of the optical member,
An eighth distance between a fifth vertical line passing through a point of one end portion of the cover member adjacent to the third reflector and a sixth vertical line passing through the reflective surface of the third reflector is adjacent to the second reflector. Lighting unit wider than a ninth distance between a seventh vertical line passing through one point of an end portion of the cover member and a ninth vertical line passing through the side of the second reflector. A first reflector;
A second reflector disposed at one side of the first reflector;
A third reflector disposed on the other side of the first reflector;
A light source module disposed between the first reflector and the second reflector; And,
An optical member disposed at a predetermined interval from the first reflector,
Wherein the optical member comprises:
A transmission area through which light is transmitted,
A non-tansmission area disposed around the transmission area, wherein the light is not transmitted;
Wherein the optical member comprises:
A specific point having a maximum distance from the first reflector,
A specific point of the optical member has a distance from a central point of a transmission region of the optical member. A display device using the illumination unit according to any one of claims 1 to 8 or 11 to 17.

Images