In the description of an embodiment, each layer (film), region, pattern, or structure is formed “on” or “under” a substrate, each layer (film), region, pad, or pattern. In the case where it is described as "to", "on" and "under" include both "directly" or "indirectly" formed. Also, the criteria for top, bottom, or bottom of each layer will be described with reference to the drawings.
In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size of each component does not necessarily reflect the actual size.
Hereinafter, lighting apparatuses according to embodiments will be described with reference to FIGS. 1 to 17.
First
Example
1 is a perspective view of a lighting device 1 according to a first embodiment, FIG. 2 is a perspective view showing a cross section of the lighting device 1, and FIG. 3 is an exploded perspective view of the lighting device 1.
1 to 3, the lighting device 1 includes a case body 100, a plurality of light emitting module units 200 and a power control unit 300, and a plurality of light emitting units accommodated in the case body 100. The diffusion plate 400 is included on the module unit 200.
The plurality of light emitting module units 200 and the power control unit 300 may be disposed on the first surface of the case body 100. That is, the plurality of light emitting module units 200 and the power control unit 300 may be arranged such that at least a portion of the light emitting module unit 200 and the power control unit 300 are disposed on the same plane, and thus the thickness of the lighting device 1 may be designed to be thin.
The lighting device 1 may have a rectangular shape extending in the first direction a, but the shape of the lighting device 1 may vary depending on an installation location or an installation environment of the lighting device 1. It can be modified.
The case body 100 may be integrally formed, for example, by injection molding. Since the case body 100 is integrally formed, heat can be effectively transmitted and released through the case body 100, so that the lighting device 1 can have good heat dissipation characteristics.
The case body 100 includes a plurality of accommodating parts 110 and 120 for accommodating the plurality of light emitting module parts 200 and the power control part 300.
The power control unit 300 may be disposed in the second accommodating part 120 formed to extend along the first direction a in the center of the case body 100.
The plurality of light emitting module parts 200 may be disposed in the first accommodating part 110 formed on at least one side of the second accommodating part 120. The first accommodating part 110 may be formed to extend in the first direction a, and the first and second accommodating parts 110 and 120 may be formed in parallel with each other.
The heat dissipation unit 130 may be formed at a side surface of the first accommodating part 110. The heat dissipation unit 130 may improve the heat dissipation characteristics of the lighting device 1 by widening the surface area of the case body 100.
In addition, irregularities are formed on an inner wall of the heat dissipation unit 130, thereby increasing the surface area of the heat dissipation unit 130. In addition, irregularities may be formed on inner walls of the first and second accommodating parts 110 and 120.
In order to emit light emitted from the plurality of light emitting module parts 200 to have a desired light distribution angle and to mitigate glare of the emitted light, the heat radiation on both sides of the plurality of light emitting module parts 200. The part 130 and the second accommodating part 120 may include first inclined surfaces 141a and 141b and a second inclined surface 140.
The first slopes 141a and 141b and the second slopes 140 may have, for example, a first slope or a second slope. Meanwhile, the inclinations of the first and second inclined surfaces 141a, 141b and 140 may be variously modified according to the design of the lighting device 1.
The plurality of light emitting module units 200 provide light to the lighting device 1, a plurality of light emitting elements 210, a substrate 220 on which the plurality of light emitting elements 210 are mounted, and the substrate 220. ) May include a heat dissipation sheet 240 under the reflective sheet 230 and the substrate 220.
The power controller 300 may include a power supply unit (PSU) (not shown) for supplying power to the lighting device 1, and a driver (not shown) for controlling and driving the plurality of light emitting module units 200. It may include.
The diffusion plate 400 may be formed on the plurality of light emitting module units 200, and may be a surface light source so that the emitted light of the plurality of light emitting module units 200 may have uniform luminance with respect to the same plane. .
In addition, the lighting device 1 may include a side cover 500 at at least one end of the case body 100. The side cover 500 may prevent moisture, dirt, and the like from penetrating into the case body 100, and the plurality of light emitting module units 200 and the power control unit 300 accommodated in the case body 100. ) Can be fixed.
1 to 12, the lighting device 1 will be described with reference to components.
<Case body 100>
4 and 5 are perspective views of the case body 100.
4 and 5, the case body 100 includes a second accommodating part 120 and a first accommodating part 110 on at least one side of the second accommodating part 120. Both sides of the body 100 may include a heat dissipation unit 130.
The first and second accommodating parts 110 and 120 and the heat dissipating part 130 may be disposed on the first surface of the case body 100. That is, the first and second accommodating parts 110 and 120 and the heat dissipating part 130 may be disposed so that at least some regions are disposed on the same plane, and thus, the thickness of the lighting device 1 may be designed to be thin. .
The first accommodating part 110, the second accommodating part 120, and the heat dissipating part 130 may be formed to extend in the first direction a, but are not limited thereto.
The case body 100 may be integrally formed, for example, by injection molding. Since the case body 100 is integrally formed, heat can be effectively transmitted and discharged through the case body 100, as compared with the case in which the case body 100 is not integrally formed, thereby providing the illumination device ( 1) may have good heat dissipation characteristics.
The material of the case body 100 may be a metal material or a resin material having good heat dissipation characteristics. In addition, an aluminum (Al) or silver (Ag) oxide film is formed on the surface of the case body 100 to ensure wear resistance, corrosion resistance, durability, and the like of the case body 100, and the appearance of the lighting device 1 is good. Can be secured.
The power control unit 300 is disposed in the second accommodating unit 120. Therefore, the second accommodating part 120 has a width and a length where the power control part 300 can be disposed, and the second grooves 121a and 121b are formed at the lower end of the second accommodating part 300 so that the power control part 300 can be firmly coupled. It may include.
Referring to FIG. 3, the second grooves 121a and 121b are coupled to the second protrusion 310 formed at the lower end of the power control unit 300 to connect the power control unit 300 to the second accommodating unit 120. It can be arranged to be firmly coupled to.
In detail, the power controller 300 is disposed such that the second protrusion 310 and the second grooves 121a and 121b are disposed on the same line, and then the power controller 300 is disposed on the first line. By inserting the second accommodating part 120 along the direction a, the power control unit 300 may be firmly coupled to the second accommodating part 120.
Meanwhile, although the second grooves 121a and 121b are shown to be formed to extend in the first direction a, the second grooves 121a and 121b are not limited thereto and may be variously modified according to the shape of the power control unit 300. Can be.
The second accommodating part 120 allows the emission light of the plurality of light emitting module parts 200 to be emitted at a desired light distribution angle on the upper side, and to reduce the glare of the emission light, the second inclined surface ( 140). The second inclined surface 140 may include a first surface 140a having a first slope and a second surface 140b having a second slope.
Since the second inclined surface 140 is formed on the second accommodating part 120, the cross section of the second accommodating part 120 may have a pentagonal shape, but is not limited thereto.
The first accommodating part 110 may be formed between the second accommodating part 120 and the heat dissipating part 130 while being spaced apart from each other. That is, the first accommodating part 110 may be formed on at least one side of the second accommodating part 120.
However, the first accommodating part 110 may be formed between two second accommodating parts or between two heat dissipating parts depending on the design of the lighting device 1, but is not limited thereto.
Since the plurality of light emitting module parts 200 that emit light are disposed in the first accommodating part 110, an upper portion of the first accommodating part 110 may be opened. In addition, the second accommodating part 120 and the heat dissipating part 130 include the second inclined surfaces 140 and the first inclined surfaces 141a and 141b, and emit light from the plurality of light emitting module units 200. The light can be emitted at a desired light distribution angle, and the glare of the emitted light can be alleviated.
Referring to FIG. 3, the plurality of light emitting module parts 200 are disposed in the first accommodating part 110. The first accommodating part 110 has a width and a length in which the plurality of light emitting module parts 200 may be disposed, and the plurality of light emitting module parts 200 are disposed on both side surfaces of the first accommodating part 110. The first protrusion 111a and 111b may be coupled to the first protruding surfaces 232a and 232b. The first grooves 111a and 111b may extend in the first direction a, but are not limited thereto.
In detail, the plurality of light emitting module parts 200 are disposed such that the first protruding surfaces 232a and 232b and the first grooves 111a and 111b lie on the same line, and then the plurality of light emitting parts. By inserting the module 200 into the first accommodating part 110 along the first direction a, the plurality of light emitting module parts 200 may be firmly coupled to the first accommodating part 110. have.
Meanwhile, referring to FIG. 3, not only the first protruding surfaces 232a and 232b but also the diffusion plate 400 may be coupled to the first grooves 111a and 111b.
The diffusion plate 400 may have a rectangular shape extending in the first direction a, but is not limited thereto. In addition, although the diffusion plate 400 is illustrated in a planar shape, the diffusion plate 400 may have various shapes that may control light distribution of the plurality of light emitting module units 200.
Both side ends of the diffusion plate 400 may be inserted into the first grooves 111a and 111b in the first direction a to be coupled to the case body 100.
That is, the first protrusions 232a and 232b of the plurality of light emitting module units 200 and both side ends of the diffusion plate 400 may be coupled to the first grooves 111a and 111b.
Both sides of the first accommodating part 110 are illustrated as being formed in a direction perpendicular to the lower end of the case body 100, but both sides of the first accommodating part 110 may be formed to have an inclination.
The heat dissipation unit 130 may be formed around both sides of the case body 100. The heat dissipation unit 130 may be formed in plural, and may effectively radiate heat generated from the plurality of light emitting module units 200.
The heat dissipation unit 130 may increase the surface area of the case body 100 to improve heat dissipation characteristics of the lighting device 1. Since the case body 100 may be integrally formed, heat generated from the plurality of light emitting module units 200 may be effectively transmitted to the heat dissipation unit 130.
The heat dissipation unit 130 may include the first inclined surfaces 141a and 141b. The first inclined surfaces 141a and 141b may allow the emitted light of the plurality of light emitting module units 200 to emit at a desired light distribution angle, and may ease glare of the emitted light.
Since the first inclined surfaces 141a and 141b are included, the cross section of the heat dissipation unit 130 may have a trapezoidal shape, but is not limited thereto.
On the other hand, the heat dissipation unit 130 may not be formed according to the design of the case body 100, but is not limited thereto.
In addition, although not shown, irregularities are formed on the lower surface of the case body 100, thereby increasing the surface area of the case body 100, thereby improving heat dissipation characteristics of the lighting device 1.
Referring to FIG. 3, the side cover 500 may be included in at least one end of the case body 100. The side cover 500 may prevent moisture, dirt, and the like from penetrating into the case body 100, and the plurality of light emitting module units 200 and the power control unit 300 accommodated in the case body 100. ) Can be fixed.
The side cover 500 may include a plurality of first holes 510a, 510b, 510c, 510d and 510e, and the case body 100 may also include a plurality of third grooves 123a, 123b, 123c and 123d, 123e).
The plurality of first holes 510 and the plurality of third grooves 123 are disposed on the same line, and then coupled to penetrate the plurality of first holes 510 and the plurality of third grooves 123. By coupling a screw, the side cover 500 may be coupled to the case body 100, but is not limited thereto.
<Multiple light emitting module part 200>
6 is a perspective view of the light emitting module unit 200, and FIG. 7 is an exploded perspective view of the light emitting module unit 200.
6 and 7, the plurality of light emitting module units 200 may include a plurality of light emitting devices 210, a substrate 220 on which the plurality of light emitting devices 210 are mounted, and a plurality of light emitting devices 210. The reflective sheet 230 may include a heat dissipation sheet 240 under the substrate 220.
The plurality of light emitting devices 210 may include at least one light emitting diode (LED) emitting color light such as red, green, blue, white, yellow, and the like. For example, the plurality of light emitting devices 210 may include red, green, and blue light emitting diodes (LEDs). However, the plurality of light emitting devices 210 may be formed of a combination of light emitting diodes (LEDs) emitting various color lights, but is not limited thereto.
The plurality of light emitting elements 210 may be mounted on the substrate 220. The substrate 220 may be a printed circuit board (PCB). The printed circuit board is a circuit printed on the insulator, and may include an aluminum substrate, a ceramic substrate, a metal core PCB, a general PCB, and the like.
The surface of the substrate 220 may be coated or painted in white to increase reflection efficiency.
The substrate 220 includes a circuit capable of driving the plurality of light emitting devices 210. The plurality of light emitting devices 210 may be variously disposed on the substrate 220, and may be arranged along rows and columns as illustrated, but is not limited thereto. The number of the plurality of light emitting elements 210 is not limited.
A coupling hole 221 is formed in the substrate 220 to insert the coupling screw into the coupling hole 221 to thereby couple the substrate 220 to the case body 100.
The heat dissipation sheet 240 may receive and release heat generated from the plurality of light emitting devices 210 through the substrate 220. The heat dissipation sheet 240 may be formed on the bottom surface of the substrate 220.
The heat dissipation sheet 240 may be a resin material or a metal material that can effectively release heat, but is not limited thereto. In addition, the heat dissipation sheet 240 is formed of an adhesive material, and can be easily attached to the bottom surface of the substrate 220.
The reflective sheet 230 may be coupled to the substrate 220, and may be a resin material or a metal material having a good reflectance.
The resin material may include, for example, PET, PC, PVC resin, and the like, and the metal material may be, for example, an alloy including silver (Ag), silver (Ag), aluminum (Al), or aluminum (Al). It may include an alloy including, but is not limited thereto.
The reflective sheet 230 may include a plurality of second holes 235, and the plurality of light emitting elements 210 may be inserted and exposed in the plurality of second holes 235. Accordingly, the plurality of second holes 235 may be formed to correspond to the number and arrangement of the plurality of light emitting devices 210. The plurality of second holes 235 may be formed through a punching process, but is not limited thereto.
The reflective sheet 230 may have a third inclined surface 231 on both sides, and the third inclined surface 231 has a third inclination and a fourth inclination, and light generated by the plurality of light emitting devices 210. Can be effectively reflected and emitted.
In addition, the first protruding surfaces 232a and 232b are formed on the third inclined surface 231 of the reflective sheet 230 to couple the plurality of light emitting module parts 200 to the case body 100. have. That is, the first protruding surfaces 232a and 232b may be inserted into and coupled to the first grooves 111a and 111b of the first accommodating part 110 in the first direction a, but are not limited thereto. Do not.
As illustrated, the third inclined surface 231 may be formed to extend from the bottom surface of the first accommodating part 110 to the first grooves 111a and 111b. However, the third inclined surface 231 may further extend onto the first grooves 111a and 111b of the first accommodating part 110 to extend above the first accommodating part 110. It is not limited to.
A first connection hole 237 may be formed at a lower end of the third inclined surface 231 of the reflective sheet 230. The plurality of light emitting module units 200 may be electrically connected to the power control unit 300 through the first connection hole 237 to receive power. Although not shown, a second connection hole is formed at a position corresponding to the power connection hole 237 of the case body 100, and the plurality of light emitting module units may be formed through the first and second connection holes. 200 and the power control unit 300 may be electrically connected.
Meanwhile, the heat dissipation sheet and / or the reflection sheet 230 may not be formed according to the design of the plurality of light emitting module units 200, but is not limited thereto.
As described above, the plurality of light emitting module parts 200 are not formed with respect to the front surface of the lighting device 1, but are disposed only in the first accommodating part 110. Therefore, even when the same number of light emitting devices are used, the pitch of the light emitting devices can be narrower than that of the light emitting devices on the front surface of the lighting device, and the usage of the substrate 220 is reduced. Can be.
On the other hand, when the diffusion plate 400 is disposed on the plurality of light emitting module unit 200, the distance between the plurality of light emitting module unit 200 and the diffusion plate 400 is the pitch of the light emitting elements (pitch) Narrower) can be reduced. This is because the narrower the pitch of the light emitting devices, the shorter the distance to be secured for light diffusion.
In the embodiment, since the pitches of the plurality of light emitting devices 210 are narrowly mounted, the distance between the plurality of light emitting module parts 200 and the diffusion plate 400 may be reduced, so that the thickness is thin and slim. The slim lighting device 1 can be provided.
<Power control unit 300>
8 is a perspective view of the power control unit 300, Figure 9 is a cross-sectional view of the power control unit 300.
8 and 9, the power control unit 300 includes a body 320 and a second protrusion 310 at the bottom of the body 320.
The body part 320 may include a power supply unit (PSU) (not shown) for supplying power to the lighting device 1, and a driving part (not shown) for controlling and driving the plurality of light emitting module parts 200. And it is not limited to the parts accommodated in the body portion 320.
The second protrusion 310 allows the power control unit 300 to be firmly coupled to the second accommodating part 120 of the case body 100. That is, the power control unit 300 is disposed such that the second grooves 121a and 121b formed at the lower end of the second protrusion 310 and the second accommodating unit 120 lie on the same line with each other. By inserting the power control unit 300 into the second accommodating unit 120 along the first direction a, the power control unit 300 may be firmly coupled to the second accommodating unit 120.
In addition, a third coupling hole 315 may be formed in the second protrusion 310. After inserting the power control unit 300 into the second accommodating unit 120, a coupling screw or the like is inserted into the third coupling hole 315 to insert the power control unit 300 into the case body 100. Can be fixed
In addition, the power control unit 300 may include a connection line 330 and is electrically connected to the plurality of light emitting module units 200 to provide power and driving signals to the plurality of light emitting module units 200. have. The connection line 330 may connect the plurality of light emitting module units 200 and the power control unit 300 through the first connection hole 237 and the second connection hole (not shown), but the present invention is not limited thereto. Do not.
The power control unit 300 may be formed of a metal material or a resin material having good heat dissipation characteristics, but is not limited thereto.
Since the power control unit 300 includes various components such as a power supply unit (PSU) and a driving unit in the body 320, the power control unit 300 can effectively protect them from external impact, moisture, and the like. In addition, the power control unit 300 can be easily coupled or separated with the case body 100, there is an advantage that easy replacement.
<Diffusion plate 400>
10 is a diagram illustrating various shapes of the diffusion plate 400.
Referring to FIG. 3, the diffusion plate 400 is formed on the plurality of light emitting module parts 200 so that the emission light of the plurality of light emitting module parts 200 has uniform luminance with respect to the same plane. Surface light source can be made.
Both side ends of the diffusion plate 400 may be inserted into the first grooves 111a and 111b of the case body 100 in the first direction a to be coupled to the case body 100.
The material of the diffusion plate 400 may be, for example, glass, PMMA, PC, and the like, but is not limited thereto.
The diffusion plate 400 is not formed with respect to the front surface of the lighting device 1, but is formed only on the plurality of light emitting module units 200, so that the distance between both side ends of the diffusion plate 400 is increased. Corresponds to the width of the housing 110. Therefore, the usage amount of the diffusion plate 400 may be reduced, and the diffusion plate 400 may not be bent or crushed.
Referring to FIG. 10, the diffusion plate 400 may have various shapes so as to variously control the light distribution of the emission light of the plurality of light emitting module units 200.
For example, referring to FIG. 10A, the diffusion plate 400 may have a planar shape. Referring to FIG. 10B, the diffusion plate 400A may have a parabolic shape having two parabolic surfaces. Referring to FIG. 10C, the diffusion plate 400B may have a convex parabolic surface and may have a concave surface. Referring to FIG. 10D, the incidence surface of the diffusion plate 400C may be flat and the emission surface may be convex. However, the shape of the diffusion plate 400 is not limited.
<Side cover 500>
11 is a view illustrating the side cover 500.
3 and 11, the side cover 500 may be formed at at least one end of the case body 100. The side cover 500 may prevent moisture, dirt, and the like from penetrating into the case body 100, and the plurality of light emitting module units 200 and the power control unit 300 accommodated in the case body 100. ) Can be fixed.
The side cover 500 may include a plurality of first holes 510a, 510b, 510c, 510d and 510e, and the case body 100 may also include a plurality of third grooves 123a, 123b, 123c and 123d, 123e).
The plurality of first holes 510 and the plurality of third grooves 123 are disposed on the same line, and then coupled to penetrate the plurality of first holes 510 and the plurality of third grooves 123. By coupling a screw, the side cover 500 may be coupled to the case body 100, but is not limited thereto.
The height and width of the side cover 500 may be formed to correspond to the case body 100.
In addition, the material of the side cover 500 may be the same as the material of the case body 100, detailed description thereof will be omitted.
<First Bracket 600>
12 is a diagram illustrating an example of a first bracket 600 which couples and fixes the lighting device 1 to an external support member.
12, a plurality of first brackets 600 may be formed on the outer surface of the lighting device 1, that is, the case body 100.
The first bracket 600 may include a first surface 610 coupled to an outer surface of the case body 100 and a second surface 620 coupled to an external support member such as a ceiling or a wall surface. . The first coupling hole 611 and the second coupling hole 621 may be formed in the first surface 610 and the second surface 620, and the coupling screws in the first and second coupling holes 611 and 621. It is inserted, it is possible to couple the lighting device 1 to the external support member.
However, the size and shape of the first bracket 600 may be variously modified according to the installation position or the installation environment of the lighting device 1, but is not limited thereto.
In addition, the first bracket 600 may be integrally formed with the case body 100.
FIG. 17 is a view showing a light distribution area of the lighting device 1 according to the first embodiment.
Referring to FIG. 17, it can be seen that the light distribution area of the lighting device 1 has a rectangular shape so as to correspond to the shape of the lighting device 1.
The brightness of the lighting device 1 is distributed relatively uniformly over the entire light distribution area. That is, the illumination device 1 has a relatively uniform luminance by the light emitted from the plurality of light emitting module units 200 by the first and second inclined surfaces 141a, 141b, 140, and the reflective sheet 230. Can be light distribution.
However, the light distribution area of the lighting device 1 may be adjusted in various ways, but is not limited thereto.
2nd
Example
Hereinafter, the lighting apparatus 1A according to the second embodiment will be described in detail with reference to the components. In the description of the second embodiment, the same parts as those of the first embodiment will be referred to the first embodiment, and redundant description thereof will be omitted.
FIG. 13 is a perspective view of the lighting apparatus 1A according to the second embodiment, and FIG. 14 is a view showing a coupling state of the rear surface of the lighting apparatus 1A according to the second embodiment.
13 and 14, the lighting device 1A may be formed by combining a plurality of lighting devices 1 according to the first embodiment. That is, the lighting device 1 according to the first embodiment may be variously coupled according to an installation environment or an installation location.
A second bracket 650 may be formed on the rear surface of the lighting device 1A, and the second bracket 650 may couple the lighting devices 1 according to the plurality of adjacent first embodiments to each other.
On the other hand, the lighting device 1A may be integrally formed without combining a plurality of lighting devices 1 according to the first embodiment. That is, the case body of the lighting device 1A is integrally formed, and a plurality of light emitting module units, a plurality of power control units, a plurality of heat radiating units, etc. may be formed in the lighting device 1A, but embodiments of the present invention are not limited thereto. Do not.
The third
Example
Hereinafter, the lighting device 2 according to the third embodiment will be described in detail with reference to components. In the description of the third embodiment, the same parts as those of the first embodiment are referred to the first embodiment, and redundant description thereof will be omitted.
15 is a perspective view of the lighting device 2 according to the third embodiment. The lighting device 2 is similar except for the shape of the lighting device 1 according to the first embodiment and the first and second curved surfaces 141c, 141d and 140c.
Referring to FIG. 15, the lighting device 2 includes a case body 100A, a plurality of light emitting module units 200 and a power control unit (not shown) accommodated in the case body 100A, and the plurality of light emitting module units. The diffusion plate 400 is included on the 200.
The second curved surface 140c may be formed on the second accommodating part of the case body 100A, and the first curved surfaces 141c and 141d may be formed on the heat dissipating part.
That is, the first curved surfaces 141c and 141d may have a quadrant or sector shape cross section, and the second curved surface 140c may have a semicircular cross section, but is not limited thereto.
In addition, the shape of the side cover 500A formed on at least one end of the case body 100A may also be modified to correspond to the shape of both ends of the case body 100A.
Fourth
Example
Hereinafter, the lighting device 3 according to the fourth embodiment will be described in detail with reference to components. In the description of the fourth embodiment, the same parts as in the first embodiment will be described with reference to the first embodiment, and redundant description thereof will be omitted.
16 is a sectional view of the lighting device 3 according to the fourth embodiment. The lighting device 3 is similar to the lighting device 1 of the first embodiment except for the shape of the first and second inclined surfaces 141e, 141f, 140d and 140e and the shape of the reflective sheet 230a.
Referring to FIG. 16, the lighting device 3 includes a case body 100B, a plurality of light emitting module units 200 and a power control unit 300, and a plurality of light emitting module units accommodated in the case body 100B. 200 includes a diffuser plate 400.
The first inclined surfaces 141e and 141f of the case body 100B form one side surface of the heat dissipation unit 130 of the case body 100B and extend from the lower end to the upper end of the case body 100B. The cross section of the heat dissipation unit 130 may have a triangular shape, but is not limited thereto.
In addition, the second inclined surfaces 140d and 140e of the case body 100B form both side surfaces of the second accommodating part 120 and extend from the lower end to the upper end of the case body 100B. A cross section of the second accommodating part 120 may have a triangular shape, but is not limited thereto.
Accordingly, one side of the first accommodating part 110 in which the plurality of light emitting module parts 200 are disposed is formed of the first inclined surfaces 141e and 141f, and the other side thereof is the second inclined surfaces 140d and 140e. It can be formed as.
The first and second inclined surfaces 141e, 141f, 140d, and 140e may emit light emitted from the plurality of light emitting module units 200 at a desired light distribution angle, and may ease glare of the emitted light. .
The third inclined surfaces 231a of the reflective sheets 230a of the plurality of light emitting module units 200 may be formed along the first and second inclined surfaces 141e, 141f, 140d, and 140e. That is, the third inclined surface 231a may extend from the lower end of the reflective sheet 230a onto the first inclined surfaces 141e and 141f and the second inclined surfaces 140d and 140e.
A first protruding surface 232d is inserted into the reflective sheet 230a in the second grooves 111a and 111b in the first inclined surfaces 141e and 141f and the second inclined surfaces 140d and 140e, respectively. 230a) may be coupled to and fixed to the case body 100B.
Meanwhile, not only the reflective sheet 230a but also the diffusion plate 400 may be disposed in the second grooves 111a and 111b.
Features, structures, effects, and the like described in the above 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.
In addition, the above description has been made with reference to the embodiments, which are merely exemplary and are not intended to limit the present invention, and those of ordinary skill in the art to which the present invention pertains may be provided within the scope not departing from the essential characteristics of the present embodiments. It will be appreciated that various modifications and applications are not possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.
