CN104390191B - Lighting device - Google Patents

Abstract

The present invention relates to an illuminating device, which includes: a first casing, the first casing includes a first shield and a second shield; a first light emitting part, the first light emitting part is arranged on the first In a casing; a first diffusion plate, the first diffusion plate is arranged in the first casing and above the first light emitting part; a second casing, the second casing includes a third a shroud and a fourth shroud; a second light emitting part provided in the second case; a second diffusion plate provided in the second case in and above the second light emitting portion; and a bracket coupled to the second shutter of the first housing and the third shutter of the second housing.

Description

lighting device

divisional application

This application is a divisional application of the Chinese patent application with the application number 201010242715.X and the title of the invention "lighting device" submitted on July 28, 2010.

technical field

The present invention relates to a lighting device, and specifically relates to an LED surface lighting device in which a plurality of LEDs are arranged.

Background technique

A light emitting diode (LED) is a type of semiconductor element that converts electrical energy into light. In general, there is a problem that the life of the light bulb is not long, and the life becomes shorter as the time of use is increased, and therefore it is necessary to periodically confirm and exchange it, so that light bulb exchange costs and management costs are incurred, which further occurs The question of operating expenses. Compared with existing light sources such as fluorescent lamps and incandescent lamps, light-emitting diodes have the advantages of low power consumption, semi-permanent life, rapid response speed, safety, and environmental benefits. Therefore, light-emitting diodes are used as various lights for indoor and outdoor use. Illumination devices such as liquid crystal display devices, electro-optic panels, street lamps, etc., are tending to replace ordinary light bulbs.

Contents of the invention

As ceiling lamps used indoors, incandescent lamps, fluorescent lamps, or halogen lamps are generally used, among which fluorescent lamps are often used. Usually, depending on the width of the space where the lighting is installed or the height between the ceiling and the floor surface, the size, luminance, and luminosity of the required lighting devices are different, so lighting device manufacturers or installation companies need to combine lighting devices of various sizes with a small amount. produced or possessed. However, in order to meet various needs, it is necessary to produce or possess various lighting devices in small quantities, but generally produce or provide lighting devices of a size that are used in large quantities. In addition, from the manufacturer's point of view, the unit price will be higher when multiple types are produced in small quantities compared to mass production of a small number of types. From the perspective of the installation company, it is necessary to have multiple types in small quantities. Difficulties are encountered, and there is a problem that consumers who need lighting devices are also difficult to obtain products of the desired size.

The object of the present invention is to eliminate all the problems of the above-mentioned prior art, and to provide a lighting device of a desired size at a low price.

According to one aspect of the present invention, a lighting device is provided, comprising:

The first shell, the first shell includes: a first bottom plate; a first wall, the first wall extends from one end of the first bottom plate; a second wall, the second wall extends from the first extending from the other end of the base; a first shutter extending from an end of the first wall; and a second shutter extending from an end of the second wall ;

A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate of the first housing and a plurality of first LEDs disposed on the first substrate;

a first diffuser plate disposed in the first housing and above the first light emitting portion;

The second shell, the second shell includes: a second bottom plate; a third wall, the third wall extends from one end of the second bottom plate; a fourth wall, the fourth wall extends from the second bottom plate extending from the other end of the bottom panel; a third shutter extending from an end of the third wall; and a fourth shutter extending from an end of the fourth wall ;

A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate of the second housing and a plurality of second LEDs disposed on the second substrate;

a second diffuser plate disposed in the second case above the second light emitting portion; and

a bracket coupled to the second shutter of the first housing and the third shutter of the second housing,

wherein each of the first louver and the second louver is inclined at an obtuse angle with respect to the face of the first diffuser plate, and

Wherein, each of the third shroud and the fourth shroud is inclined at an obtuse angle relative to the surface of the second diffusion plate.

According to a second aspect of the present invention, a lighting device is provided, comprising:

The first shell, the first shell includes: a first bottom plate; a first wall, the first wall extends from one end of the first bottom plate; a second wall, the second wall extends from the first extending from the other end of the bottom plate; a first upper plate extending from an end of the first wall; and a second upper plate extending from an end of the second wall ;

A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate of the first housing and a plurality of first LEDs disposed on the first substrate;

a first diffuser plate disposed in the first housing and above the first light emitting portion;

The second shell, the second shell includes: a second bottom plate; a third wall, the third wall extends from one end of the second bottom plate; a fourth wall, the fourth wall extends from the second bottom plate the other end of the bottom plate extends; a third upper plate extending from the end of the third wall; and a fourth upper plate extending from the end of the fourth wall ;

A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate of the second housing and a plurality of second LEDs disposed on the second substrate;

a second diffuser plate disposed in the second case above the second light emitting portion; and

a bracket coupled to the second upper plate of the first housing and the third upper plate of the second housing,

wherein each of the first upper plate and the second upper plate is disposed higher than the surface of the first diffuser plate, and

Wherein, each of the third upper plate and the fourth upper plate is disposed higher than the surface of the second diffuser plate.

According to a third aspect of the present invention, a lighting device is provided, comprising:

A first lighting module, the first lighting module includes:

A first casing, the first casing includes a first bottom plate, a first wall and a second wall, a first shield and a second shield, the first wall and the second wall are combined to the first a base plate, the first shutter is bonded to the first wall, and the second shutter is bonded to the second wall;

a first diffuser plate bonded between the first wall and the second wall; and

a first light emitting part, the first light emitting part including a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate; and

A second lighting module, the second lighting module includes:

The second casing, the second casing includes a second bottom plate, a third wall and a fourth wall, a third shield and a fourth shield, the third wall and the fourth wall are combined to the first two bottom plates, the third shutter is bonded to the third wall, and the fourth shutter is bonded to the fourth wall;

a second diffuser plate bonded between the third wall and the fourth wall; and

a second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate,

Wherein, the second shutter and the third shutter are combined with each other,

wherein each of the first shroud and the second shroud is inclined at an obtuse angle with respect to the face of the first diffuser plate,

wherein each of the third louver and the fourth louver is inclined at an obtuse angle with respect to the face of the second diffuser plate, and

Wherein, the first shroud and the fourth shroud include a support frame for ceiling fixing.

According to a fourth aspect of the present invention, a lighting device is provided, comprising:

A first lighting module, the first lighting module includes:

The first shell, the first shell includes a first bottom plate, a first wall and a second wall, a first upper plate and a second upper plate, the first wall and the second wall are combined to the first a bottom plate, the first upper plate is bonded to the first wall, and the second upper plate is bonded to the second wall;

a first diffuser plate bonded between the first wall and the second wall; and

a first light emitting part, the first light emitting part including a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate; and

A second lighting module, the second lighting module includes:

The second casing, the second casing includes a second bottom plate, a third wall and a fourth wall, a third upper plate and a fourth upper plate, the third wall and the fourth wall are combined to the first two bottom plates, the third upper plate is bonded to the third wall, and the fourth upper plate is bonded to the fourth wall;

a second diffuser plate bonded between the third wall and the fourth wall; and

a second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate,

Wherein, the second upper plate and the third upper plate are combined with each other,

wherein each of the first upper plate and the second upper plate is disposed higher than the surface of the first diffuser plate, and

Wherein, each of the third upper plate and the fourth upper plate is disposed higher than the surface of the second diffuser plate.

According to a fifth aspect of the present invention, a lighting device is provided, comprising:

The first housing, the first housing includes a first bottom plate, a first wall and a first shield, the first wall extends from one end of the first bottom plate, and the first shield extends from the first shield one end of one wall extends;

A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate;

a first diffusion plate, the first diffusion plate is disposed in the first casing, disposed above the first light emitting part and combined with the first wall;

The second housing, the second housing includes a second bottom plate, a second wall and a second shield, the second wall extends from one end of the second bottom plate, the second shield extends from the first one end of the second wall extends, wherein the second shutter is combined with the first shutter;

A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate;

a second diffusion plate disposed in the second housing, disposed on the second light emitting portion and combined with the second wall;

a cover portion disposed between the first bottom plate and the second bottom plate; and

A power control part provided in a space defined by the cover part, the first wall, the second wall, the first shutter, and the second shutter.

The lighting device of the present invention includes: a housing, which includes: a bottom plate, side walls extending substantially vertically from both side ends of the bottom plate, A shroud with an inclined surface; a light-emitting part arranged on the bottom plate; a diffusion plate arranged parallel to the light-emitting part and spaced apart, and its two ends are arranged on the two ends of the side wall.

According to the lighting device of the present invention, a predetermined main lighting module can be used alone.

According to the lighting device of the present invention, a plurality of predetermined main lighting modules can be combined to realize a lighting device of a desired size.

According to the lighting device of the present invention, the specified main lighting modules can be mass-produced to reduce the production unit price of the lighting device.

Description of drawings

FIG. 1 is a cross-sectional view of a first single lighting module 10A;

FIG. 2 is a cross-sectional view of a second single lighting module 10B;

FIG. 3 is a cross-sectional view of a third single lighting module 10C;

Fig. 4 is a perspective view of the lighting device 1A according to the first embodiment;

5 is a perspective view showing a section of the lighting device 1A according to the first embodiment;

6 is a cross-sectional view of the lighting device 1A according to the first embodiment;

7 is an exploded perspective view of the lighting device 1A according to the first embodiment;

8 is a cross-sectional view of two housings 100 of the lighting device 1A according to the first embodiment;

FIG. 9 is a perspective view of the combination of the light emitting part 200 and the reflector 400;

FIG. 10 is an exploded perspective view of the light emitting unit 200 and the reflector 400;

Fig. 11 is a cross-sectional view of a lighting device 1B according to a second embodiment;

Fig. 12 is another example of the lighting device 1B according to the second embodiment;

13 is a perspective view of a lighting device 1C according to a third embodiment;

14 is a cross-sectional view of a lighting device 1C according to a third embodiment;

15 is a cross-sectional view of a lighting device 1D according to a fourth embodiment;

16 is a cross-sectional view of a lighting device 1E according to a fifth embodiment;

Fig. 17 is another example of the housing 100 of the lighting device 1E according to the fifth embodiment;

Fig. 18 is another example of the housing 100 of the lighting device 1E according to the fifth embodiment;

Fig. 19 is an exploded perspective view of a lighting device 1F according to a sixth embodiment;

Fig. 20 is a perspective view of a lighting device 1F according to a sixth embodiment;

21 is a cross-sectional view of a lighting device 1F according to a sixth embodiment;

FIG. 22 is another embodiment of a reflector 400;

FIG. 23 is a perspective view of the power control unit 20;

FIG. 24 is a front view of the power control unit 20;

FIG. 25 is a diagram illustrating an embodiment 300A of a diffuser plate 300;

FIG. 26 is a diagram showing another embodiment 300B of the diffuser plate 300;

FIG. 27 is a diagram showing yet another embodiment 300C of the diffuser plate 300;

FIG. 28 is a diagram showing yet another embodiment 300D of the diffuser plate 300;

Figure 29 is an embodiment of the side cover 40;

Figure 30 is another embodiment of the side cover 40;

FIG. 31 is a perspective view showing an embodiment 30A of the bracket 30;

FIG. 32 is a perspective view showing another embodiment 30B of the bracket 30;

FIG. 33 is a cross-sectional view of another embodiment of a lighting device using a bracket 30A combined with a single lighting module;

Fig. 34 is a cross-sectional view of another embodiment of a lighting device combined with a single lighting module using a bracket 30A;

FIG. 35 is a cross-sectional view of another embodiment of a lighting device combined with a single lighting module using a bracket 30B;

Fig. 36 is a cross-sectional view of another embodiment of a lighting device combined with a single lighting module using a bracket 30B;

Fig. 37 is another example 30C of bracket 30;

FIG. 38 is a diagram showing a structure in which a bracket 30C connects single lighting modules 10 to each other;

FIG. 39 is a cross-sectional view of a lighting module with another shaped shutter 130;

FIG. 40 is a cross-sectional view of a lighting module having a shutter 130 of another shape;

41 is an explanatory diagram of a shading definition angle θ and a shading angle α of a lighting device according to an embodiment;

FIG. 42 is a perspective view of the support frame 50;

FIG. 43 is a cross-sectional view of the support frame 50;

FIG. 44 is a cross-sectional view showing the coupling state between the support frame 50 and the M-shaped bar of the ceiling;

FIG. 45 is a cross-sectional view showing the coupling state between the support frame 50 and the T-bar of the ceiling.

Explanation of reference numbers

1 Lighting device

10 single lighting modules

20 Power control unit

30 bays

40 side cover

50 surface cover

100 shell

200 Luminous Department

300 diffuser plate

400 reflector

detailed description

In the description of the embodiments, if there is no special description, the top or bottom of each layer is based on the drawings. When the drawings are used as a reference, the bottom plate side of the housing is usually set as the bottom, and the diffuser plate side is set as the bottom. Set to up. However, in FIG. 7 , FIG. 13 , FIG. 19 , and FIG. 41 , when the drawings are used as a reference, the bottom plate side of the casing is set as the upper side, and the diffuser plate side is set as the lower side.

In addition, the reference|standard of upper or lower of each layer is demonstrated based on drawing.

In the drawings, for the convenience and clarity of description, the thickness of each layer is exaggerated, omitted or schematically shown. In addition, the size of each component does not fully represent the actual size. In addition, when no reference symbol is attached to the term "illumination device", it means that the illumination devices 1 , 2 , 3 , 4 , 5 , and 6 according to the first to sixth embodiments are included.

Next, referring to FIG. 1 to FIG. 41 , the first single lighting module, the second single lighting module, the third single lighting module and the lighting device according to the embodiment will be described.

Single Lighting Module

The lighting device 1 according to the embodiment to be described later is uniquely configured unlike a general lighting device. That is, a lighting device 1 is formed by including a single lighting module 10 and a power control part 20 , or a lighting device 1 is formed by including a plurality of single lighting modules 10 and at least one power control part 20 . Since one or more single lighting modules 10 are combined to form lighting devices 1 of various sizes, there is no limitation in forming the lighting device 1 of required size.

About the single lighting module 10, although the 1st single lighting module 10A, the 2nd single lighting module 10B, and the 3rd single lighting module 10C are mentioned and demonstrated below, the single lighting module of other shapes may exist other than these.

FIG. 1 is a cross-sectional view of a first single lighting module 10A, FIG. 2 is a cross-sectional view of a second single lighting module 10B, and FIG. 3 is a cross-sectional view of a third single lighting module 10C. Referring to FIG. 1 to FIG. 3 and FIG. 8, a single lighting module 10 may include: a housing 100; a light emitting part 200 installed on the bottom plate 110 of the housing 100; a reflector 400 arranged in contact with the upper surface of the light emitting part 200; The board 300 is spaced apart from the light emitting unit 200 and provided on the upper portion of the light emitting unit 200 .

The first single lighting module 10A is used when two are combined in a direction perpendicular to the direction a in FIG. 7 to form the lighting device of the first embodiment. Alternatively, three first single lighting modules 10 including one light emitting part 200 are used on both sides when three are combined in a direction perpendicular to the direction a of FIG. 13 to form the lighting device of the third embodiment. Alternatively, four or more first single lighting modules 10 including one light emitting part 200 are combined in a direction perpendicular to the direction a to form the lighting device of the embodiment (not shown) and used on both sides.

1, FIG. 5, FIG. 6 and FIG. 8, the housing 100 of the first single lighting module 10A includes: a bottom plate 110; side walls 120 extending vertically from both sides of the bottom plate 110; shutters 130 extending from the side walls The ends of 120 extend to form an obtuse angle with respect to diffuser plate 300 . The second embodiment 1B shown in FIGS. 11 and 12 may include an upper plate 140 instead of the shutter 130 .

In addition, a first bracket connecting portion 151 is formed at the end of one side of the shield 130 of the casing 100 of the first single lighting module 10A, and is used to combine the single lighting modules 10 with each other. A support frame 160 for ceiling fixing is formed at the end. However, the first bracket coupling portion 151 must be formed at the end of one side of the shutter 130 of the casing 100 of the first single lighting module 10A, and the end of the other side of the shutter 130 may not form a ceiling fixing support. frame 160. As a result, the first single lighting module 10A is different from the second single lighting module described later in that the first bracket coupling portion 151 is formed only at the end of the one side shutter 130 .

The second single lighting module 10B is used when forming the lighting device of the fourth embodiment using one single lighting module having one light emitting portion 200 . Alternatively, when three single lighting modules with one light-emitting part 200 are combined in a direction perpendicular to the direction a in FIG. lighting module to be used. Or, when combining four or more single lighting modules with one light emitting part 200 in the direction perpendicular to direction a to form the lighting device of the embodiment (not shown), it can be used as a single lighting module in the middle or as a single lighting module on both sides. A single lighting module is used.

Referring to FIG. 2 , FIG. 13 and FIG. 14 , the housing 100 of the second single lighting module 10B includes: a bottom plate 110 ; side walls 120 extending vertically from both sides of the bottom plate 110 ; The portion extends to form an obtuse angle with respect to the face of the diffuser plate. An upper plate 140 may be included instead of the shutter 130 . In addition, a first bracket connecting portion 151 is formed at the ends of the cover plates 130 on both sides of the housing 100 of the second single lighting module 10A for combining the single lighting modules 10 with each other.

The third single lighting module 10C is used when a single lighting module having two light emitting parts 200 is used to form the lighting device of the fifth embodiment shown in FIG. 16 . Alternatively, it is used when two single lighting modules having two light emitting parts 200 are combined in a direction perpendicular to the direction a in FIG. 19 to form the lighting device of the sixth embodiment. Alternatively, it is used when three or more single lighting modules having two light emitting units 200 are combined in a direction perpendicular to the direction a to form a lighting device of an embodiment (not shown).

The casing 100 of the third single lighting module 10C will be described in the fifth embodiment described later.

first embodiment

4 is a perspective view of the lighting device 1A according to the first embodiment, FIG. 5 is a perspective view showing a cross section of the lighting device 1A according to the first embodiment, and FIG. 6 is a cross-sectional view of the lighting device 1A according to the first embodiment. 7 is an exploded perspective view of the lighting device 1A according to the first embodiment, FIG. 8 is a cross-sectional view of two casings 100 of the lighting device 1A according to the first embodiment, and FIG. 9 is a combination of the light emitting part 200 and the reflector 400 Perspective view, FIG. 10 is an exploded perspective view of the light emitting unit 200 and the reflection plate 400 .

4 to 8, the lighting device 1 includes: two first single lighting modules 10A; two power control parts 20, located in the space 170 between the two first single lighting modules 10A; In combination with the first single lighting module 10A, it may further include a side cover 40 . Referring to FIG. 1 , the first single lighting module 10A used in the first embodiment includes: a housing 100; a light emitting part accommodated in the housing 100; Plate 400.

Referring to FIGS. 4 to 8 , in the first embodiment two first single lighting modules 10A are included, however, the first embodiment may also be formed using two second single lighting modules 10B differently therefrom. Since the second single lighting module 10B has the first bracket combining portion 151 at the ends of the shutters 130 on both sides, even if the two second single lighting modules 10B are combined to form the overall appearance of the first embodiment, the same There is not much difference in the appearance and function of the combination of the two first single lighting modules 10A.

Referring to FIGS. 5 and 6 , the light emitting part 200 may be disposed on the bottom plate 110 of the housing 100 . The power control part 20 may be disposed in the space 170 formed by the shutter 130 formed with the first bracket joint part 151 and the side wall 120 connected thereto in the two first single lighting modules 10A. At this time, since the power control unit 20 is stacked under the base plate 110 instead of vertically, but horizontally on the base plate 110, the thickness of the lighting device 1 is thinner than that of a normal lighting device.

The ceiling of a building that can be equipped with ceiling-embedded lighting usually has a concrete structure ceiling, and an M-shaped or T-shaped structure is arranged on the ceiling toward the roof surface, and the M-shaped or T-shaped structure A TEX board etc. are attached to the strip. Usually, the power control unit 20 of a vertical lighting device installed on the ceiling of a building is stacked under the bottom plate 110 and installed in the vertical direction, so its thickness usually exceeds 70 mm. However, wires, air-conditioning pipes, etc. are usually placed between the ceiling of the concrete structure and the M-shaped bar or T-shaped bar, so the space where the lighting device can be installed is often narrow. Therefore, due to space constraints, when installing a normal vertical lighting device buried in the ceiling, some M-shaped strips will be cut off and the installation will be difficult, or the lighting position will be set in an unintended position. .

Compared with this, the lighting device 1A according to the first embodiment preferably has a thickness of about 45mm, so even if the installation space is relatively narrow, the lighting device can be freely arranged on the ceiling, which has the advantage of easy installation. Of course, the so-called size of 45mm is an example compared with the existing lighting device, so the size of the lighting device 1A according to the first embodiment can be adjusted according to the thickness of the power control unit 20 and/or the size of the housing 100 and the like. Variations take many forms.

The lighting device 1 may have a rectangular shape extending along the first direction a, however, the shape of the lighting device 1 may be changed in various forms according to the installation location or installation environment of the lighting device 1 .

The shutters 130 on both sides of the light emitting unit 200 are inclined at an obtuse angle with respect to the surface of the diffuser plate 300 in order to emit light emitted from the light emitting unit 200 at a desired light distribution angle and to alleviate glare. If the angle based on the diffuser plate 300 cannot be determined without including the diffuser plate, the shutter 130 may be determined by an inclination extending from the end of the side wall 120 and expanding outward of the side wall 120 .

The inclination of the shutter 130 can be deformed into various forms according to the design of the lighting device 1 .

Referring to FIGS. 9 and 10 , the light emitting unit 200 may include an LED 210 , a substrate 220 on which the LED 210 is mounted, and a heat radiation sheet 240 disposed on the substrate 220 . In addition, the substrate 220 may have a coupling hole 230 for coupling with the case 100 .

In addition, the lighting device may further include a reflector 400 disposed around the inner surface of the side wall of the casing 100 for reflecting the light emitted from the LED 210 toward the outside of the lighting device 1 . The reflective plate 400 surrounds not only the inner surface of the side wall 120 but also preferably surrounds the surface of the substrate 220 of the light emitting unit 200 except for the area where the LED 210 is arranged.

The power control unit 20 may include a power supply unit (PSU) (not shown) that supplies power to the lighting device 1 and a drive unit (not shown) that controls and drives the light emitting unit 200 .

Referring to FIG. 5 , the diffusion plate 300 is spaced apart from the light emitting unit 200 in the direction in which light is emitted from the LEDs 210, and the light emitted from the LEDs 210 corresponding to each point light source passes through the diffusion plate 300 to realize a surface light source, thereby making the light emitting unit The emitted light of 200 has uniform luminance on the surface of the diffusion plate 300 .

The light emitting part 200 is not formed on the front of the lighting device 1 , but is formed on the bottom plate 110 of the casing 100 . Therefore, even when the same number of LEDs 210 is used, the space between LEDs 210 can be narrowed and the usage-amount of the board 220 can be reduced compared to the case where LEDs 210 are arranged in front of the lighting device.

On the other hand, the light emitted from the LED 210 as a point light source passes through the diffusion plate 300 to form a surface light source, and the light emitted from adjacent LEDs 210 needs to have an overlapping area on the surface of the diffusion plate 300. For this reason, the LED 210 and The diffuser plates 300 need to be sufficiently spaced apart. However, if the separation distance becomes larger, it means that the thickness of the lighting device 1 becomes larger, which is not preferable. In order to reduce the separation distance, it is necessary to reduce the distance between LEDs 210 . As mentioned above, the light emitting unit 200 is not formed on the front of the lighting device 1 but is disposed on the bottom plate 110 of the housing 100 , so the substrate 220 of the light emitting unit 200 is also limited by the width of the bottom plate 110 of the housing 100 . As a result, the intervals between the LEDs 210 arranged on the substrate 220 are naturally reduced, and the intervals between the LEDs 210 and the diffusion plate 300 required to form a surface light source are also reduced.

Thereby, a slim lighting device 1 can be provided due to the structural advantages as described above.

In addition, if the light emitted from each LED is irradiated toward the irradiation surface without the diffusion plate 300 , hot spots will occur. If the shape of the light source itself directly shines on the illuminated surface, the area illuminated by the light is obviously different from the area not illuminated by the light. At this time, the area illuminated by the light is called a hot spot to form a clear contrast with the surrounding darker parts. limit. In the case of general indoor lighting or outdoor lighting such as street lamps that do not require concentrated lighting, it is not preferable because hot spots occur because uniformity of the irradiated surface will be lowered. Using a surface lighting device as in the embodiment can reduce the occurrence of hot spots compared with a normal point lighting device, so that the illuminance distribution on the irradiated surface can be made uniform, and there is an advantage of reducing eye fatigue.

second embodiment

Next, the lighting device 1B according to the second embodiment will be described in detail centering on the constituent elements. In the description of the second embodiment, please refer to the first embodiment for the parts that are the same as those of the first embodiment, and the description of this part is omitted here, and the description will not be repeated.

FIG. 11 is a cross-sectional view of a lighting device 1B according to the second embodiment, and FIG. 12 is another example of the lighting device 1B according to the second embodiment.

Compared with the first embodiment, the biggest difference of the second embodiment is that the casing 100 has an upper plate 140 instead of the shutter 130 .

Referring to FIGS. 11 and 12 , in the second embodiment, two first single lighting modules 10A are included, but the first embodiment may be formed using two second single lighting modules 10B differently therefrom. Since the second single lighting module 10B has the first bracket combining portion 151 at the ends of the upper plates 140 on both sides, even if the two second single lighting modules 10B are combined to form the overall appearance of the first embodiment, the There is not much difference in the appearance and function of the combination of the two first single lighting modules 10A.

Referring to FIG. 12 , when the distance between the diffuser plate 300 and the light emitting unit 200 is maintained approximately the same as in FIG. 11 , if the height of the side wall 120 is increased compared to FIG. In the middle part of the side wall 120 .

In this case, glare is more effectively prevented than in the first exemplary embodiment by the side walls 120 extending perpendicular to the base plate 110 and/or the diffuser plate 300 and extending higher than in the first exemplary embodiment. However, the width of the light-irradiated area on the bottom surface will be reduced compared with the first embodiment, or the uniformity of the illuminance distribution on the illuminated surface will be lower than that of the first embodiment. Therefore, use of the second embodiment is preferable in the case where prevention of glare is preferably considered with respect to the width of the area irradiated with light and the distribution of illuminance on the irradiated surface.

third embodiment

Next, the lighting device 1C according to the third embodiment will be described in detail centering on the constituent elements. In the description of the third embodiment, please refer to the first embodiment for the parts that are the same as those of the first embodiment, and the description of this part is omitted here and will not be repeated.

FIG. 11 is a cross-sectional view of a lighting device 1B according to the second embodiment, and FIG. 12 is another example of the lighting device 1B according to the second embodiment.

Compared with the first embodiment, the biggest difference of the second embodiment is that the casing 100 has an upper plate 140 instead of the shutter 130 .

FIG. 13 is a perspective view of a lighting device 1C according to the third embodiment, and FIG. 14 is a cross-sectional view of the lighting device 1C according to the third embodiment.

13 and 14, the lighting device 1C includes two first single lighting modules 10A, and includes a second single lighting module 10B between the two first single lighting modules 10A, and includes a The power control part 20 of at least one of the two spaces 170 between the module 10A and the second single lighting module 10B may further include a side cover 40 . Here, a single lighting module 11 , 12 includes a housing 100 , a light emitting part 200 accommodated in the housing 100 and a diffuser plate 300 spaced apart from the light emitting part, and may further include a reflective plate 400 .

Since the casing 100 of the first single lighting module 10A has been described in the first embodiment, further description thereof is omitted here.

Referring to FIG. 13 and FIG. 14 , in the third embodiment, two first single lighting modules 10A and one second single lighting module 10B are included, but differently, three second single lighting modules 10B can be used to form a third implementation example. Since the first single lighting module 10A has a first bracket joint portion 151, it is only used on both sides when a plurality of single lighting modules are combined to form a lighting device, but the second single lighting module 10B is used on both sides. The end portion of the side shield 130 has the first bracket coupling portion 151, so it can be used regardless of the middle portion or both sides of the lighting device. In addition, even if three second single lighting modules 10B are combined, there is not much difference in appearance and function compared with the combination of two first single lighting modules 10A and one second single lighting module.

In the third embodiment, in order to drive a total of three light emitting units 200, at least one power control unit is required. Although two power control units 20 are shown in the drawings, one power control unit can control three light emitting units. 200 for control. The positions of one or more power supply control units 20 have been described above.

Although not shown in FIGS. 13 and 14 , it is possible to have an upper plate 140 instead of the shutter 130 as in the second embodiment. For an embodiment including the upper plate 140 instead of the shutter 130 , since it is different from the second embodiment The content of the description in the example is repeated, so the description is omitted.

Fourth embodiment

Next, the lighting device 1D according to the fifth embodiment will be described in detail centering on the constituent elements. In the description of the fourth embodiment, please refer to the first embodiment for the same part as the first embodiment, and the description of this part is omitted here, and the description will not be repeated.

Fig. 15 is a cross-sectional view of an illumination device 1D according to a fourth embodiment.

Referring to FIG. 15 , the lighting device 1 includes: a second single lighting module 10B; a power control unit 20 located on the outer side of one side wall 120 of the two side walls 120 of the casing 100 of the second single lighting module 10B, which can A side cover 40 is additionally included. Here, the housing 100 of the second single lighting module 10B includes: a bottom plate 110; a side wall 120 extending vertically from both ends of the bottom plate 110; The faces of the plate form an obtuse angle. Moreover, a first bracket coupling portion 151 for coupling the single lighting modules 10 to each other is formed at the ends of the shields 130 on both sides of the casing 100 of the second lighting module 10B.

Different from the first, second and third embodiments, the fourth embodiment only has a single lighting module 10 , so there is no space 170 divided by the two shutters 150 and the side walls 120 connected thereto. Thus, the power control unit 20 is located on the outer surface of one side wall 110 of the two side walls 120 of the casing 100 of the second single lighting module 10B. Unlike the first, second and third embodiments, the power control unit 20 The fixing may be unstable. For this reason, holes can be drilled in the side wall 110, and holes can be drilled in the power control part 20 at the same time, and these holes can be placed oppositely. Combined with the power control unit 20. In addition, even if no hole is drilled on the side wall 120 of the housing 100, another bracket (not shown) that can be combined with the power control unit 20 can be formed on the side wall 120 so that the housing 100 and The power control unit 20 is combined.

However, although not shown in FIG. 15 , it is possible to have an upper plate 140 instead of the shutter 130 as in the second embodiment, and for an embodiment including the upper plate 140 instead of the shutter 130, since it is different from the second embodiment The content of the description in is repeated, so its description is omitted.

fifth embodiment

Next, the lighting device 1E according to the fifth embodiment will be described in detail centering on the constituent elements. In the description of the fifth embodiment, please refer to the first embodiment for the parts that are the same as those of the first embodiment, and the description of this part is omitted here and will not be repeated.

Fig. 16 is a cross-sectional view of the lighting device 1 according to the fifth embodiment; Fig. 17 is another example of the housing 100 of the lighting device 1 according to the fifth embodiment; Fig. 18 is a housing of the lighting device 1 according to the fifth embodiment Yet another example of body 100.

The biggest difference between the lighting device according to the fifth embodiment and the lighting devices in the aforementioned first to third embodiments is that the single lighting module used is not the first and second single lighting modules including only one light emitting part 11, 12, but a third lighting module 10C including two light emitting parts. 16 to 18, the third single lighting module 10C used in the lighting device of the fifth embodiment and the first and second single lighting modules 11 used in the lighting device of the first to fourth embodiments , 12, the width of the third single lighting module 10C is about twice the width of the first and second single lighting modules 11, 12. In addition, in the fifth embodiment, there is only one single lighting module, and even if it is not combined with other single lighting modules, the space 170 capable of accommodating the power control unit 20 is formed.

Comparing Fig. 18 and Fig. 17, a cover part can be additionally formed on the casing 100 in Fig. 18 to cover the space 170 for accommodating the power control part 20. Since the power control part 20 is surrounded by the casing 100, it can When viewing the housing 100 from above and below the housing 100 , the power control unit 20 cannot be seen.

Referring to FIG. 16 , although the first bracket joints 151 for combining the single lighting modules 10 are formed on the ends of the shields 130 on both sides of the casing 100 of the third single lighting module 10C, it is also possible to only A first bracket coupling portion 151 is formed on an end portion of one of the two outer shutters 130 .

17 and 18, different from the housing 100 used in FIG. 16, the housing 100 in FIG. 17 and FIG. The enclosed space formed by the division of additional parts. In this way, if an additional part is formed, the heat generated by the driving of the lighting device, etc. is transferred to the additional part, and the entire case can function as a heat radiator. As a result, the surface area of the heat radiator is increased, which can improve Exothermic effect. In order to further enhance the heat radiation effect generated by these additional parts, it is preferable to form the housing 100 by extrusion molding.

Referring to FIG. 16 , the lighting device 1E includes: a third single lighting module 10C; a power control unit 20 located in a space 170 divided by two side walls 120 and two shutters 130 inside the third single lighting module 10C Inside, a side cover 40 may be additionally included. Here, the third single lighting module 10C includes: a casing 100; two light-emitting parts 200 accommodated in the casing 100; two diffusion plates 300 spaced apart from the two light-emitting parts 200, and two reflective plate 400 .

The housing 100 of the third single lighting module 10C includes: two bottom plates 110; four side walls 120 extending vertically from both side ends of the bottom plate 110; The plates 300 form an obtuse angle, and the ends of the two shutters 130 on the inside are connected. Without the diffuser plate 300 , the shutter 130 extends from both ends of the side wall 120 in such a way that it inclines outward more than the side wall 120 , and it does not hurt to determine the position of the shutter 130 in this way. Although not shown in FIGS. 16 to 18 , an upper plate 140 may be used instead of the shutter 130 as in the second embodiment.

Sixth embodiment

Next, the lighting device 1F according to the sixth embodiment will be described in detail centering on the constituent elements. In the description of the sixth embodiment, please refer to the fifth embodiment for the parts that are the same as those of the fifth embodiment, and the description of this part is omitted here, and the description will not be repeated.

19 is an exploded perspective view of the lighting device 1F according to the sixth embodiment; FIG. 20 is a perspective view of the lighting device 1F according to the sixth embodiment; FIG. 21 is a cross-sectional view of the lighting device 1F according to the sixth embodiment.

The lighting device 1F of the sixth embodiment also uses the third single lighting module 10C including the two light emitting parts 120 in the same manner as the lighting device 1E of the fifth embodiment. Therefore, the lighting device 1F according to the sixth embodiment can use the housing 100 of FIGS. 17 and 18 .

Referring to FIG. 19 to FIG. 21 , the lighting device 1F includes: two third single lighting modules 10C; power control parts 20 , each of which is divided by two side walls 120 and two shrouds 130 inside the third single lighting module 10C In the space 170 formed; a side cover 40 may be additionally included. However, unlike those shown in FIGS. 19 to 21 , the power control unit 20 can also be used in a lighting device that does not include two third lighting modules but only includes one third lighting module. In this case, one power control unit 20 to control all four light-emitting parts 200, the power control part 20 can also be located in the space 170 formed by the two shutters 130 and the side wall 120 on the inside of the third single lighting module 10C. In FIG. 21, the power The control part 20 may also be located in a space formed by combining two third single lighting modules through the bracket 30 .

Like the fifth embodiment, it may include an upper plate 140 instead of the shutter 130. For the embodiment including the upper plate 140 used to replace the shutter 130, it is partially repeated with the description of Embodiment 5, so the description of this part is omitted. .

Different from the housing 100 of the third single lighting module shown in FIGS. Only two third single lighting modules 10C can be combined, and more than three modules cannot be combined. Therefore, at this time, there is no problem in embodying the sixth embodiment, but it is impossible to embody a lighting device having a size larger than that of the sixth embodiment.

Next, the lighting device 1 will be described centering on the constituent elements.

<Shell 100>

The structure of the housing 100 has already been described in the first to sixth embodiments, and thus the description of this part is omitted.

Refer to FIG. 6 and FIG. 8 . If a single lighting module is combined in an adjacent manner, the power control unit 20 is disposed in the space 170 divided by the shutter 130 and the side wall 120 , and the second protruding portion formed at the lower end of the power control unit 20 22 is slidably inserted into the power control part combining groove 152 formed at the interface between the side wall 120 of the housing 100 and the floor 110, so that the housing 100 and the power control part 20 can be firmly combined.

On the other hand, the extension length of the power supply control part connecting groove 152 extending along the first direction a shown in FIG. Thin plate having the shape of the letter "C" or "0". In addition, it is also possible not to form the power supply control part coupling groove 152, but to drill holes on the side wall of the housing 100 and to drill holes in the position of the power control part 20 opposite to the hole of the side wall 120, and use Screws or positioning pins are used to combine the housing 100 and the power control unit 20 . In addition, since the power control part coupling groove 152 is formed on the casing 100 by extrusion, it is convenient for production and the casing 100 and the power control part 20 can be combined even without additional screws or positioning pins. Can be called a simple way of combining methods.

There are two types of bracket joints: a first bracket joint 151 and a second bracket joint 153 . The first and second bracket joints 151 and 153 can be formed on the housing 100, and the first bracket joint 151 and the second bracket joint 152 are connected to the bracket 30 so that a single lighting module can able to hold together firmly. In addition, a side cover coupling groove 154 may also be formed on the casing 100 . The side cover combination groove 154 is used for combination with the side cover 40 , and the combination method will be described in another part.

The material of the casing 100 can be metal material or resin material with good heat dissipation characteristics. In addition, an aluminum or silver oxide film is formed on the surface of the housing 100 , whereby the wear resistance, corrosion resistance, and durability of the housing 100 can be ensured, and a good appearance of the lighting device 1 can be ensured.

In addition, although the shutter 130 is mainly used to shield glare, in addition to treating the surface of the shutter 130 for good reflection and attaching a reflective member to the surface to prevent glare, it also plays a reflective role. The role of the plate, so it can improve the light efficiency.

The casing 100 can be formed by separately manufacturing the bottom plate 110 , the side wall 120 , and the shutter 130 and then assembling them, or by integrally forming the entire casing 100 , such as by extrusion. When the casing 100 is integrally formed, it is preferable not only to integrally form the bottom plate 110, the side wall 120, the shutter 130, but also the diffusion plate coupling groove 180, the first and second bracket coupling parts 151, 153, and the power control part coupling groove 152. , The side cover coupling groove 154 can also be integrally formed at one time. The casing 100 is integrally formed in an elongated manner along the length direction as a whole. In addition, if the housing 100 is integrally formed by extrusion or the like, the vertical section of the housing 100 in the length direction has the same shape in this direction. For example, a cross section cut through the middle portion of the housing 100 has the same shape as a cross section cut through a portion closer to the end surface. If the casing 100 is integrally formed, the trouble of assembling various parts can be reduced, and the manufacturing process can also be reduced.

When forming the casing 100, the above-described diffusion plate coupling groove 180, the first and second bracket coupling parts 151, 153, the power control part coupling groove 152, the side cover body coupling groove 154, etc. do not necessarily have to be formed at one time. , at least one part may be integrally formed with the case 100 when forming it. For example, according to needs, it can be shaped as the housing 100 formed only with the bottom plate 110, the side wall 120, the shroud 130 and the diffusion plate coupling groove 180, or it can be formed with only the bottom plate 110, the side wall 120, the shroud 130 and The housing 100 of the first and second bracket joints 151 and 153 .

Referring to FIG. 8 , a diffuser plate combining groove 180 may be formed on an interface of an inner surface of the side wall 120 and an upper surface of the shutter 130 . Referring to FIGS. 11 and 12 , in the case of including an upper plate 140 instead of the shutter 130 , a diffuser can be formed in the middle portion of the inner side of the side wall 120 or on the inner side of the side wall 120 close to the upper plate 140 . The plate engages the groove 180 .

Referring to FIG. 8 , on the outer surface of the side wall 120 of the housing 100 or on the lower surface of the shutter 130, first and second bracket joints 151, 153, a power control unit joint groove 152, and a side cover joint can be formed. at least one of the slots 154 . Referring to FIGS. 11 and 12 , in the case of including an upper plate 140 used to replace the shield 130 , the outer side of the side wall 120 of the housing 100 or the lower surface of the upper plate 140 are formed with first and second bracket joints. At least one of the parts 151, 153, the power control part connecting groove 152, and the side cover body connecting groove 154.

Since the housing 100 is integrally formed, heat can be efficiently transferred and released to the entire housing 100 , and thus the lighting device can have good heat dissipation characteristics. Of course, the upper plate 140 may replace the shutter 130 according to an embodiment.

In further detail, when the components constituting the casing 100 are manufactured separately and combined, complete surface contact between the components cannot be achieved, but partial point contact. Therefore, the heat transferred from the light-emitting part 200 to the bottom plate 110 cannot be sufficiently transferred to the side wall 120, and the hot liquid in the side wall 120 cannot be transferred to the shroud 130 sufficiently, so that the components of the entire housing 100 cannot be sufficiently used as heat radiation. body to use. In contrast, when the housing 100 is integrally molded by extrusion, since the entire housing is a single part, the heat generated from the light emitting unit 200 or the power control unit 20 passes through the side wall 120 from the bottom plate 110 and reaches the housing. The process of the shroud 130 is uniformly transferred, thus having an excellent heat release effect.

An additional explanation will be given on the exothermic effect. As described in the fifth embodiment, an additional part constituting the shell 100 can be formed at the lower end of the outermost shield 130. The purpose of forming the additional part is to increase the surface area of the shell 100 to improve the heat dissipation effect, so it can be adopted to increase the shell The surface area of the body 100 can be any shape to enhance the heat release effect. Therefore, the additional parts can form a closed curved surface together with the shutter 130 and the side wall 120, and can also form a heat release hole while forming a closed curved surface, and can form concavities and convexities on the shutter 130 or the side wall 120 to play the role of a heat release pin. effect.

FIG. 39 is a cross-sectional view of a lighting module with a shutter 130 of another shape; FIG. 40 is a cross-sectional view of a lighting module with a shutter 130 of another shape. Referring to FIG. 39 and FIG. 40 , the cross section of the shutter 130 can be in various shapes such as a straight line, a parabola, or an arc. But more important than the shape of the shutter 130 itself is what kind of shutter defines the angle θ.

The lighting device formed with the shutter 130 has a specific shutter angle θ, so the diffuser plate 300 will not directly enter the field of view within the shutter defined angle θ, and since shielding glare is its main purpose, it has a suitable shielding effect. It is very important that the plate defines the angle θ.

Fig. 41 is an explanatory view of the shading definition angle θ and the shading angle α of the lighting device according to the embodiment. Referring to FIG. 41 , different from the shutter 130 in FIG. 41 , in order to reduce glare, the shutter 130 is formed in a manner that is almost in line with the side wall 120 , so that the defined angle θ of the shutter will decrease and the shielding angle α will increase. Means that there is no glare within angles greater than the shutter defined angle θ. Therefore, eye fatigue caused by glare can be reduced by simply stepping away from the lighting device slightly.

On the contrary, unlike the shutter 130 of FIG. 41, if the shutter 130 is formed almost parallel to the side wall 120, the shutter definition angle θ increases and the shadow angle α decreases. There is no glare within the angle θ defined by the board, but because the angle θ defined by the shutter is too large, even if it is far away from the lighting device, glare will be generated and the eyes will be tired. However, since the diffusion range of light can be sufficiently widened, there is an advantage of widening the irradiation surface.

Therefore, it is necessary to increase the defined angle θ of the baffle around the lighting device that increases the area of the light irradiation area, while it is necessary to decrease the limited angle θ of the baffle around the lighting device that prevents glare.

Preferably, the baffle-limited angle θ has a value between 0° and 90°. If the baffle-limited angle θ has a value within the above-mentioned range, then the diffusion plate 300 cannot be seen from one side of the diffusion plate 300 to the other side. of the direct light from the diffuser plate.

The light emitting part 200 must be arranged on the bottom plate 110 of the housing 100, so the bottom plate 100 has a width and a length capable of arranging the light emitting part 20, and a diffusion plate coupling groove 180 can be formed at the position where the side wall 120 and the shroud 130 are in contact. The fixing protrusion 430 of the diffusion plate 300 and/or the reflection plate 400 may be sandwiched in the diffusion plate combination groove 180 . The diffusion plate combining groove 180 may be a shape extending along the first direction a as shown in FIG. 7 , FIG. 13 and FIG. 19 .

Insert the fixing protrusion 430 of the diffusion plate 300 and/or the reflection plate 400 in a sliding manner into the diffusion plate coupling groove 180. If the side cover 40 is combined at least one end of the housing 100, the diffusion plate 300 and/or reflection plate The board 400 is sufficiently firmly fixed. Therefore, after the lighting device is installed, there is no worry that the diffusion plate 300 and/or the reflection plate 400 will be detached from the lighting device no matter in use or in transportation.

In FIGS. 1 to 3 , the side wall 120 of the housing 100 extends in a vertical direction to the bottom plate 110 , but it is not required to be vertical, and it is impossible to extend in a substantially vertical manner, and it can also be separated from the bottom plate 110 . It is formed in a way that spreads out as far as it goes.

In addition, although not shown, the bottom surface of the housing 100 is formed with irregularities, so that the surface area of the housing 100 can be increased to improve the heat radiation characteristics of the lighting device.

<Multiple Light Emitting Units 200>

FIG. 9 is a perspective view of the combination of the light emitting part 200 and the reflective plate 400 ; FIG. 10 is an exploded perspective view of the light emitting part 200 and the reflective plate 400 .

Referring to FIGS. 9 and 10 , the light emitting unit 200 may include: a plurality of LEDs 210 ; a substrate 220 mounted with a plurality of LEDs 210 ;

The plurality of LEDs 210 includes at least one LED emitting red, green, blue, white, yellow and other colors. For example, plurality of LEDs 210 may include red, green, and blue light emitting diodes LEDs. In addition, a plurality of LEDs 210 may be formed by combining light emitting diodes LEDs emitting various colors.

A plurality of LEDs 210 may be mounted on the substrate 220 . The substrate 220 may be a printed circuit board (PCB, Printed Circuit Board). Printed circuit boards have circuits printed on insulators, which can include aluminum substrates, ceramic substrates, metal core PCBs, ordinary PCBs, etc.

The surface of the substrate 220 may be coated in white or silver, or painted to improve reflection efficiency.

The substrate 220 includes a circuit capable of driving a plurality of LEDs 210 . As shown in FIG. 9 and FIG. 10 , a plurality of LEDs 210 can be neatly arranged on the substrate 220 in rows and columns, and can also be arranged in various ways. In addition, the number of objects of some LED210 may be more or less than the number of objects shown in figure. However, if the number of LEDs 210 arranged is too small, it will be difficult for the lighting device to function as surface lighting. In consideration of the function of surface lighting, it is preferable to arrange LEDs 210 in an appropriate number.

A coupling groove 230 may be formed on the base plate 220 , and a screw, a pin, or the like is inserted into the coupling groove 230 , thereby coupling the base plate 220 to the housing 100 .

The heat radiation sheet 240 is arranged so as to be in contact with the substrate 220 at the lower portion of the substrate 220 , and receives the heat generated from the plurality of LEDs 210 transmitted through the substrate 220 , and releases the heat or transfers the heat to the entire housing 100 .

The heat radiation sheet 240 may be formed of a resin material or a metal material capable of effectively releasing heat. In addition, since the heat radiation sheet 240 is formed of an adhesive material, it can be easily attached to the lower surface of the substrate 220 .

<Reflector 400>

FIG. 22 is another embodiment of the reflection plate 400 . Description will be given with reference to FIG. 9 , FIG. 10 and FIG. 22 .

The reflection plate 400 can be formed of a resin material or a metal material with good reflectivity, and the reflection plate is located on the substrate 220 and surrounds the side wall 120 of the casing 100 . The resin material may include resins such as PET, PC, PVC, etc., and the metal material may include silver (Ag), alloys containing silver (Ag), aluminum (Al) or alloys containing (Al), stainless steel, and the like.

The reflector 400 includes: a bottom reflector 410 ; a side reflector 420 extending from both sides of the bottom reflector 410 ; and a fixing protrusion 430 extending from the end of the side reflector 420 toward the outside.

The bottom reflector 410 of the reflector 400 has an LED hole 411 through which a plurality of LEDs 210 are inserted and exposed. Thereby, the LED hole 411 can be formed so that it may correspond to the number of objects of the arrangement of some LED210. LED hole 411 The LED hole 411 can be formed by a punching process, and it can also be manufactured by various methods of forming holes, such as etching. The side reflector 420 may be formed perpendicular to the bottom reflector 410 , but as shown in FIGS. 1 to 3 , it is preferable that the side reflector 420 has an inclination toward the outside along the extending direction. When there is an inclination, the light generated from the plurality of LEDs 210 can be effectively reflected and emitted.

The thickness of the fixing protrusion 430 of the reflection plate 400 is smaller than the width of the diffusion plate coupling groove 180 of the casing, so the fixing protrusion 430 can be inserted into the diffusion plate coupling groove 180 in a sliding manner, thereby the reflection plate 400 can be fixed on the housing. body 100.

The side reflector 420 may be formed in such a manner as to extend from the bottom reflector 410 to the diffusion plate combining groove 180 of the housing 100 . On the other hand, according to FIG. 22 , the side reflector 420 extends longer than the diffuser coupling groove 180 of the casing 100 , and thus can extend beyond the side wall 120 of the casing 100 .

Referring to FIGS. 9 and 10 , a first electrical connector 421 may be formed at a lower end of the side reflective plate 420 of the reflective plate 400 . The light emitting unit 200 is electrically connected to the power control unit 20 through the first electrical connector 421 to receive the provided power. On the other hand, a second electrical connector (not shown) is formed on the lower end portion of the side wall 120 of the housing 100 at a position corresponding to the first electrical connector 421 of the reflector 400, so the second electrical connector (not shown) The first electrical connector 421 and the second electrical connector can be electrically connected to the light emitting unit 200 and the power control unit 20 .

<Power Control Unit 20>

FIG. 23 is a perspective view of the power control unit 20 ; FIG. 24 is a front view of the power control unit 20 .

Referring to FIG. 23 and FIG. 24 , the power control part includes a main body part 21 and a second protruding part 22 located at the lower end of the main body part 21 .

The main body part 21 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 light emitting part 200 .

The connection between the second protruding portion 22 of the power control unit 20 and the power control unit coupling groove 152 of the casing 100 has been described in the above description, so this part is omitted.

On the other hand, a third coupling hole 23 may be formed in the second protrusion 22 . After the second protruding portion 22 is inserted into the power control unit coupling groove 152 , a coupling screw or pin is inserted into the third coupling hole 23 , thereby fixing the power control unit 20 to the casing 100 . On the same day, even if there is no third bonding hole 23, bonding can be performed by shrink fit.

In addition, the power control unit 20 includes a connecting wire 24 and is electrically connected to the light emitting unit 200 , so it can provide power and driving signals to the light emitting unit 200 . The connection wire 24 connects the light emitting unit 200 and the power control unit 20 through the first electrical connector 421 and the second electrical connector 121 .

The power control unit 20 can be made of metal material or resin material with good heat dissipation characteristics.

The main body 21 of the power control unit 20 includes various components such as a power supply unit (PSU) and a drive unit, so these components can be effectively protected from external shocks, moisture, and the like. In addition, since the power supply control unit 20 can be easily combined with or separated from the casing 100, there is an advantage of easy replacement.

<Diffuser 300>

Referring to FIGS. 1 to 3 and 5 , a diffusion plate 300 is formed on the light-emitting portion 200 so that the light emitted from the point light source LED 210 is emitted through the diffusion plate 300 , and can achieve a surface light source so that the light diffuses through the diffusion plate 300 . has a uniform luminance on the surface.

Both ends of the diffuser plate 300 are slidably inserted into the diffuser plate combining groove 180 along the first direction a shown in FIG. 5 , thereby being able to be combined with the housing 100 .

The material of the diffusion plate 300 may be, for example, glass, PMMA and PC.

Since the diffusion plate 300 is not formed on all surfaces of the lighting device 1 but only on the light emitting portion 200 , the usage amount of the diffusion plate 300 can be reduced. The width of the diffusion plate 300 is extremely narrow compared to its length, and the two sides of the diffusion plate 300 are supported by the housing 100 in the longitudinal direction, so that the bending or sagging of the diffusion plate 300 hardly occurs. There is no problem in using it.

FIG. 25 is a diagram showing an embodiment 300A of the diffuser plate 300; FIG. 26 is a diagram showing another embodiment 300B of the diffuser plate 300; FIG. 27 is a diagram showing another embodiment 300C of the diffuser plate 300; FIG. 28 is A diagram showing yet another embodiment 300D of a diffuser plate 300 .

Referring to FIGS. 25 to 28 , the diffuser plate 300 may have various shapes so as to variously adjust the backlight of the emitted light of the light emitting part 200 . For example, referring to FIG. 25 , the diffusion plate 300A may have a planar shape. Referring to FIG. 26 , the diffusion plate 300B may have a shape having two paraboloids. Referring to FIG. 27 , the diffuser plate 300C may have a convex paraboloid or a concave surface. Referring to FIG. 28 , the diffuser 300D is formed such that the incident surface is flat and the outgoing surface is convex.

The diffuser plate 300 preferably has a rectangular shape extending along the first direction a, but does not necessarily have to take such a shape. In addition, the diffuser plate 300 usually takes a mostly planar shape, but may have various shapes capable of adjusting the backlight of the light emitting unit 200 .

<Side Cover 40>

FIG. 29 is an embodiment of the side cover 40 ; FIG. 30 is another embodiment of the side cover 40 .

Referring to FIG. 4 , FIG. 7 , FIG. 13 and FIG. 19 , at least one end of the housing 100 may include a side cover 40 , preferably, side covers 40 are formed at both ends of the housing 100 . The side cover 40 can prevent moisture and dirt from penetrating into the housing 100 , improve the rigidity of the lighting device, and can fix the light emitting unit 200 and the power control unit 20 accommodated in the housing 100 . The side cover 40 may include a plurality of coupling holes 41 , and the housing 100 may also include a plurality of side cover coupling grooves 154 .

After the side cover combining groove 154 of the housing 100 is placed opposite to the combining hole 41 of the side cover 40, fasten the screws or positioning pins communicating with the side cover combining groove 154 and the combining hole 41, so that the housing 100 and the combining hole 41 are connected. The side cover body 40 is combined. The side cover 40 can prevent dust or dirt from flowing into the housing 100 , and can further improve the rigidity of the housing 100 .

After a plurality of coupling holes 41 are arranged in such a way that a plurality of side cover body coupling grooves 154 can be seen, combine screws or position them a little so that they all pass through the multiple coupling holes 41 and the multiple side cover body coupling grooves 154 , so that the side cover 40 can be combined with the casing 100 . The coupling hole 41 of the side cover 40 does not have to be drilled at a position corresponding to the coupling groove 154 of the side cover, but can also correspond to the first bracket coupling part 151 of the housing 100 and the power control part coupling groove 152. Drill a hole at the position of the joint part 153 with the second bracket. At this time, more screws or pins are inserted into the first bracket coupling part 151 , the power control part coupling groove 152 and the second bracket coupling part 153 , thereby combining the side cover 40 and the housing 100 .

The height and width of the side cover 40 can be formed to correspond to the housing 100 , so as shown in FIGS. 29 and 30 , there may be a difference in shape between them.

In addition, the material of the side cover body 40 may be the same as that of the casing 100 , so detailed description of this part is omitted.

<Bracket 30>

31 is a perspective view showing an embodiment 30A of the bracket 30, FIG. 32 is a perspective view showing another embodiment 30B of the bracket 30, and FIG. 33 is another example of a lighting device using a bracket 30A combined with a single lighting module. The sectional view of the embodiment, Fig. 34 is a sectional view of another embodiment of a lighting device using a bracket 30A combined with a single lighting module, and Fig. 35 is another example of a lighting device using a bracket 30B combined with a single lighting module The cross-sectional view of the embodiment, FIG. 36 is a cross-sectional view of another embodiment of the illuminating device combined with a single illuminating module using a bracket 30B.

31 and 32 , the brackets 30A and 30B include a fixing plate 31 , an illumination module coupling part 32 extending from one end of the fixing plate 31 to combine with the first bracket coupling part 151 of the housing 100 , and a lighting module combining part 32 extending from the fixing plate 31 A safety ring 38 extending from one end.

The lighting module combining part 32 and/or the safety ring 38 may be formed not only at one end of the fixing plate 31 but also at the other end thereof.

Referring to FIG. 6 and FIG. 11 , the combination of the housing 100 and the bracket 30 can be known in the first embodiment and the second embodiment. The fixing plate 31 is pushed into the second bracket coupling part 153 of the casing 100 in a sliding manner. Since the lighting module coupling part 32 has a through hole, the lighting module coupling part 32 and the housing are connected by means of screws or pins passing through the through hole. body 100 in combination with the first bracket coupling portion 151.

Referring to FIG. 33 and FIG. 34 , compared with FIG. 6 and FIG. 11 , the shape of the first bracket coupling portion 151 of the casing 100 is different. However, the combination method is the same. The fixing plate 31 is pushed into the second bracket joint part 153 of the housing 100 in a sliding manner. Since the lighting module joint part 32 has a through hole, the lighting can be activated by means of a screw or a pin passing through the through hole. The module combining part 32 is combined with the first bracket combining part 151 of the housing 100 .

Referring to FIG. 35 and FIG. 36 , compared with FIG. 33 and FIG. 34 , there is no difference between the fixing plate 31 and the safety ring 38 . way of combining. The lighting module coupling member 32 does not have a through hole through which a screw or a pin can be coupled. Instead, the lighting module coupling member 32 may have a shape of a suspension member capable of suspending and supporting the first bracket coupling portion 151 of the casing 100 . Of course, at this time, the first bracket coupling portion 151 used has a different shape from the first bracket coupling portion 151 shown in FIGS. 6 and 11 , and FIGS. 33 and 34 . The bracket 30B shown in FIG. 32, FIG. 35 and FIG. 36 is different from the bracket 30A shown in FIG. 31, FIG. 33 and FIG. way combined.

The first bracket joint part 151 is formed at the end of the shutter 130 of the housing 100 , and the second bracket joint 153 is formed on the shutter 130 or the side wall 120 of the housing 100 . On the other hand, in the second embodiment shown in FIGS. 11 and 12 , in the case where the upper plate 140 is included instead of the shutter 130 , the first bracket coupling portion 151 is formed at the end of the upper plate 140 of the housing 100 , The second bracket coupling part 153 is formed on the side wall 120 .

The safety ring 38 is used to prevent the installed lighting device 1 from being disengaged from the installation position or falling on the floor to be damaged due to earthquake or other impact force, or falling on people under the lighting device 1 to cause injury. If the rope is passed on the safety ring 38 and the rope is fixed inside the ceiling, even if the lighting device 1 is detached from the installation position due to the impact force, the safety ring 38 can be pulled by the rope fixed inside the ceiling and can Prevent the lighting device 1 from falling to the floor. Therefore, the bracket 30 formed with the safety ring 38 further has a function of ensuring safety in addition to the original function of connecting single lighting modules.

Not only one bracket 30 is combined along the length direction of the housing 100 , in order to improve the bonding strength between single lighting modules or to ensure safety, multiple brackets can be combined.

FIG. 37 is another example 30C of the bracket 30 , and FIG. 38 is a view showing a structure in which the bracket 30C connects single lighting modules 10 to each other.

Referring to FIG. 38 , a plurality of brackets 30C may be formed on the outer surface of the lighting device 1 , that is, the housing 100 . The bracket 30C of this shape can be used in the housing 100 shown in FIG. 17 and FIG. 18 or the housing 100 shown in FIG. Used when combining.

The bracket 30C has two surfaces bent at right angles, and may include a first surface 33 combined with the outer surface of the housing 100 and a second surface 35 combined with an external supporting member such as a ceiling or a wall or the outer surface of the housing 100 . The first surface 33 has a first coupling hole 34, and the second surface 35 has a second coupling hole 36. By inserting coupling screws into the first coupling hole 34 and the second coupling hole 36, the single lighting modules can be combined with each other. , or combine the lighting device 1 with an external support component. In addition, the bracket 30C may be integrally formed on the bracket 100 .

<Support frame 50>

Fig. 42 is a perspective view of the support frame 50, Fig. 43 is a cross-sectional view of the support frame 50, Fig. 44 is a cross-sectional view showing the joint state between the support frame 50 and the M-shaped bar of the ceiling, and Fig. 45 is a cross-sectional view showing the support frame 50 and the ceiling Cross-sectional view of the bonded state between the T-bars.

42 to 45, the support frame 50 includes: a frame body 51 surrounding the outer side of the housing 100; a housing support portion 53 extending from the inner side of the frame body 51 to support the housing 100 A load: a ceiling fixing part 52 extending from the outer surface of the frame main body 51, and the ceiling fixing part is fixed on the ceiling. As shown in FIG. 43 , the frame main body 51 may have a space inside for weight reduction.

The housing support portion 53 is in contact with the end of the shutter 130 of the housing 100 to support the load of other components constituting the lighting device including the housing 100 . In addition, in order to prevent components of the lighting device other than the supporting frame 50 from being disengaged from the opening of the supporting frame 50, it is preferable that the length between the outermost end shutters 130 of the lighting device be located at the side cover The length between the housing support parts 53 at the corresponding positions of the body 40 is slightly shortened. However, if the length between the housing support parts 53 is too short, the inclined surface of the shutter 130 will be blocked, so this is not preferable. Therefore, it is preferable to form the length between the housing support portions 53 to such an extent that the inclined surface of the shutter 130 is not blocked.

The ceiling fixing part 52 not only fixes the lighting device to the ceiling, but also can cover the gap if there is any gap between the housing 100 and the ceiling on which the housing is installed, so that the appearance can be improved. In addition, the ceiling fixing portion 52 may have a ceiling coupling hole 54 .

Referring to Fig. 43 and Fig. 44, the lighting device can be fixed on the ceiling by screws passing through the ceiling joint hole 54, the TEX board and the M-shaped strip.

Referring to FIG. 43 and FIG. 45 , due to the load of the lighting device itself, the lighting device is fixed on the ceiling in a state where the lower surface of the ceiling fixing part 52 is in contact with the T-shaped bar. At this time, the ceiling fixing part 52 does not necessarily have the ceiling joint hole 54, but considering not only being arranged on the T-bar, but also considering the situation of being arranged on the M-shaped bar, the ceiling fixing part 52 preferably has the ceiling joint hole. 54.

The support frame 50 is particularly useful in that it is resilient to this setting. Depending on the country or the ceiling structure, the area of the ceiling where the lighting device is installed varies. In the various embodiments mentioned so far, lighting devices of various sizes are embodied by a combination of a single lighting module 10 . However, if the lighting device is fixed with a space formed between the lighting device and the ceiling, the appearance will be affected, and the fixing of the lighting device will also become unstable. In this case, it is actually difficult to form dozens or hundreds of specifications of a single lighting module 10 for the sake of aesthetics and stability, which increases the manufacturing unit cost. Therefore, in the above-mentioned embodiment, with a single lighting module 10 of a specified size, various sizes of support frames 50 can be used for the space between the lighting device and the ceiling to solve both aesthetics and fixability. For the part forming the support frame 50, if it is formed elongatedly in one direction, and the cross-sectional shape cut on a plane parallel to the one direction forms the same shape, the part is cut into four, and the ends thereof are If they are connected to form a rectangle, a support frame 50 of required size can be formed. Therefore, there is an advantage that the manufacturing process is very simple and it can correspond to various ceilings. In particular, if only the length of the ceiling fixing portion 52 is different, and other members for forming the support frame 50 having the same size are produced, it is possible to almost perfectly correspond to ceilings of various sizes.

The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to a certain embodiment. Moreover, the features, structures, effects, etc. listed in each embodiment can be combined or modified in other embodiments by those who have ordinary knowledge in the technical field to which the embodiment belongs. Therefore, the contents involved in such combinations and modifications should be construed as included within the scope of the present invention.

In addition, although the said description was demonstrated around an Example, this is only an example, and does not limit this invention. Those having ordinary knowledge in the field to which the present invention pertains can make various modifications and applications other than the above examples without departing from the essential characteristics of the present embodiment. For example, various constituent elements specifically shown in the embodiments can be modified and implemented. In addition, the difference concerning such a modification and application can be construed as being included in the scope of the present invention described in the claims.

Claims (37)

1. A lighting device, comprising: The first shell, the first shell includes: a first bottom plate; a first wall, the first wall extends from one end of the first bottom plate; a second wall, the second wall extends from the first extending from the other end of the base; a first shutter extending from an end of the first wall; and a second shutter extending from an end of the second wall ; A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate of the first housing and a plurality of first LEDs disposed on the first substrate; a first diffuser plate disposed in the first housing and above the first light emitting portion; The second shell, the second shell includes: a second bottom plate; a third wall, the third wall extends from one end of the second bottom plate; a fourth wall, the fourth wall extends from the second bottom plate extending from the other end of the bottom panel; a third shutter extending from an end of the third wall; and a fourth shutter extending from an end of the fourth wall ; A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate of the second housing and a plurality of second LEDs disposed on the second substrate; a second diffuser plate disposed in the second case above the second light emitting portion; and a bracket coupled to the second shutter of the first housing and the third shutter of the second housing, wherein each of the first louver and the second louver is inclined at an obtuse angle with respect to the face of the first diffuser plate, and Wherein, each of the third shroud and the fourth shroud is inclined at an obtuse angle relative to the surface of the second diffusion plate. 2. The lighting device of claim 1, wherein each of the first housing and the second housing includes a first bracket joint, wherein the first bracket joint is provided At ends of the second shutter and the third shutter, and wherein the bracket is coupled to the first bracket joint. 3. The lighting device of claim 2, wherein each of the first housing and the second housing includes a second bracket joint, wherein the second bracket joint is provided At the second wall and the third wall, and wherein the bracket is combined with the second bracket coupling portion. 4. The lighting device according to claim 3, Wherein said bracket includes: a fixing plate coupled to the second bracket coupling portion; and A coupling member provided on the fixing plate and coupled to the first bracket coupling portion. 5. The lighting device according to claim 4, wherein the coupling member has a through hole, and wherein the coupling member is coupled with the first bracket coupling portion by allowing a screw or a pin to pass through the through hole . 6. The lighting device according to claim 4, wherein the coupling part has a shape capable of being hung on the first bracket coupling part and fixed to the first bracket coupling part. 7. The lighting device according to claim 1 or 3, further comprising a side cover, the side cover is combined with the first casing and the second casing, wherein the first casing and the second casing Each of the second cases includes a side cover coupling groove, and wherein the side cover coupling groove is provided on lower surfaces of the second and third shutters. 8. The lighting device according to claim 1 or 3, further comprising a power control part, the power control part supplies power to the first light emitting part and the second light emitting part, wherein the first casing and the second light emitting part Each of the two housings includes a power control part coupling groove, and wherein the power control part coupling groove is provided on outer surfaces of the second wall and the third wall. 9. The lighting device according to claim 1, further comprising a first reflective plate and a second reflective plate, the first reflective plate is arranged in the first housing, and the second reflective plate is arranged in the in the second housing. 10. The lighting device of claim 9, wherein each of the first wall, the second wall, the third wall and the fourth wall has a diffusion plate coupling groove, wherein the first diffuser plate is inserted into the diffuser plate combining grooves of the first wall and the second wall, and wherein the second diffuser plate is inserted into the diffuser plate combining grooves of the third wall and the fourth wall, Wherein the first reflector comprises: a first bottom reflector disposed on the first substrate and having a plurality of first holes into which the plurality of first LEDs are inserted; a first fixing protrusion inserted into the diffusion plate combining groove of the first wall and the second wall; and a first side reflector disposed between the first bottom reflector and the first fixing protrusion, Wherein the second reflector comprises: a second bottom reflector disposed on the second substrate and having a plurality of second holes into which the plurality of second LEDs are inserted; a second fixing protrusion inserted into the diffusion plate combining groove of the third wall and the fourth wall; and A second side reflector is disposed between the second bottom reflector and the second fixing protrusion. 11. A lighting device as claimed in claim 2 or 4, wherein the bracket comprises a safety ring having a hole through which the cord passes. 12. The lighting device according to claim 2, wherein the first housing includes a first ceiling-fixing support frame, the first ceiling-fixing support frame being provided at an end of the first shutter , and wherein the second housing includes a second ceiling-fixing support frame provided at an end of the fourth shutter. 13. A lighting device comprising: The first shell, the first shell includes: a first bottom plate; a first wall, the first wall extends from one end of the first bottom plate; a second wall, the second wall extends from the first extending from the other end of the bottom plate; a first upper plate extending from an end of the first wall; and a second upper plate extending from an end of the second wall ; A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate of the first housing and a plurality of first LEDs disposed on the first substrate; a first diffuser plate disposed in the first housing and above the first light emitting portion; The second shell, the second shell includes: a second bottom plate; a third wall, the third wall extends from one end of the second bottom plate; a fourth wall, the fourth wall extends from the second bottom plate the other end of the bottom plate extends; a third upper plate extending from the end of the third wall; and a fourth upper plate extending from the end of the fourth wall ; A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate of the second housing and a plurality of second LEDs disposed on the second substrate; a second diffuser plate disposed in the second case above the second light emitting portion; and a bracket coupled to the second upper plate of the first housing and the third upper plate of the second housing, wherein each of the first upper plate and the second upper plate is disposed higher than the surface of the first diffuser plate, and Wherein, each of the third upper plate and the fourth upper plate is disposed higher than the surface of the second diffuser plate. 14. The lighting device of claim 13, wherein each of the first housing and the second housing includes a first bracket joint, wherein the first bracket joint is provided At ends of the second upper plate and the third upper plate, and wherein the bracket is coupled to the first bracket coupling portion. 15. The lighting device of claim 14, wherein each of the first housing and the second housing includes a second bracket joint, wherein the second bracket joint is provided At the second wall and the third wall, and wherein the bracket is combined with the second bracket coupling portion. 16. The lighting device of claim 15, Wherein said bracket includes: a fixing plate combined with the second bracket joint; and A coupling component is disposed on the fixing plate and coupled with the first bracket coupling portion. 17. The lighting device according to claim 16, wherein the coupling member has a through hole, and wherein the coupling member is coupled with the first bracket by allowing a screw or a pin to pass through the through hole. Combine. 18. The lighting device according to claim 16, wherein the coupling part has a shape capable of being hung on and fixed to the first bracket coupling part. 19. The lighting device according to claim 13 or 15, further comprising a side cover, the side cover is combined with the first casing and the second casing, wherein the first casing and the second casing Each of the second cases includes a side cover combining groove, and wherein the side cover combining groove is provided on lower surfaces of the second upper plate and the third upper plate. 20. The lighting device according to claim 13 or 15, further comprising a power control part, the power control part supplies power to the first light emitting part and the second light emitting part, wherein the first housing and the Each of the second housings includes a power control part coupling groove, and wherein the power control part coupling groove is provided on outer surfaces of the second wall and the third wall. 21. The lighting device according to claim 13, further comprising a first reflective plate and a second reflective plate, the first reflective plate is arranged in the first housing, and the second reflective plate is arranged in the in the second housing. 22. The lighting device of claim 21, wherein each of the first wall, the second wall, the third wall and the fourth wall has a diffusion plate coupling groove, wherein the first diffusion plate is inserted into the first wall and the fourth wall The diffuser plate of the second wall incorporates grooves, and wherein the second diffuser plate is inserted into the diffuser plate combining grooves of the third wall and the fourth wall, Wherein the first reflector comprises: a first bottom reflector disposed on the first substrate and having a plurality of first holes into which the plurality of first LEDs are inserted; a first fixing protrusion inserted into the diffusion plate combining groove of the first wall and the second wall; and a first side reflector disposed between the first bottom reflector and the first fixing protrusion, Wherein the second reflector comprises: a second bottom reflector disposed on the second substrate and having a plurality of second holes into which the plurality of second LEDs are inserted; a second fixing protrusion inserted into the diffusion plate combining groove of the third wall and the fourth wall; and A second side reflector is disposed between the second bottom reflector and the second fixing protrusion. 23. A lighting device as claimed in claim 14 or 16, wherein the bracket includes a safety ring having a hole through which a cord is threaded. 24. The lighting device according to claim 14, wherein the first housing includes a first ceiling-fixing support frame, the first ceiling-fixing support frame being provided at an end of the first upper plate , and wherein the second housing includes a second ceiling-fixing support frame provided at an end of the fourth upper plate. 25. A lighting device comprising: A first lighting module, the first lighting module includes: A first casing, the first casing includes a first bottom plate, a first wall and a second wall, a first shield and a second shield, the first wall and the second wall are combined to the first a base plate, the first shutter is bonded to the first wall, and the second shutter is bonded to the second wall; a first diffuser plate bonded between the first wall and the second wall; and a first light emitting part, the first light emitting part including a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate; and A second lighting module, the second lighting module includes: The second casing, the second casing includes a second bottom plate, a third wall and a fourth wall, a third shield and a fourth shield, the third wall and the fourth wall are combined to the first two bottom plates, the third shutter is bonded to the third wall, and the fourth shutter is bonded to the fourth wall; a second diffuser plate bonded between the third wall and the fourth wall; and a second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate, Wherein, the second shutter and the third shutter are combined with each other, wherein each of the first shroud and the second shroud is inclined at an obtuse angle with respect to the face of the first diffuser plate, wherein each of the third louver and the fourth louver is inclined at an obtuse angle with respect to the face of the second diffuser plate, and Wherein, the first shroud and the fourth shroud include a support frame for ceiling fixing. 26. The lighting device according to claim 25, further comprising a power control part, the power control part supplies power to the first lighting module and the second lighting module, Wherein the power control unit is located in the space covered by the second cover and the third cover. 27. The lighting device according to claim 26, wherein the power control part comprises a protrusion, wherein the second wall and the third wall comprise coupling grooves, and the protrusion is inserted into the coupling groove. 28. A lighting device comprising: A first lighting module, the first lighting module includes: The first shell, the first shell includes a first bottom plate, a first wall and a second wall, a first upper plate and a second upper plate, the first wall and the second wall are combined to the first a bottom plate, the first upper plate is bonded to the first wall, and the second upper plate is bonded to the second wall; a first diffuser plate bonded between the first wall and the second wall; and a first light emitting part, the first light emitting part including a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate; and A second lighting module, the second lighting module includes: The second casing, the second casing includes a second bottom plate, a third wall and a fourth wall, a third upper plate and a fourth upper plate, the third wall and the fourth wall are combined to the first two bottom plates, the third upper plate is bonded to the third wall, and the fourth upper plate is bonded to the fourth wall; a second diffuser plate bonded between the third wall and the fourth wall; and a second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate, Wherein, the second upper plate and the third upper plate are combined with each other, wherein each of the first upper plate and the second upper plate is disposed higher than the surface of the first diffuser plate, and Wherein, each of the third upper plate and the fourth upper plate is disposed higher than the surface of the second diffuser plate. 29. The lighting device according to claim 28, further comprising a power control part, the power control part supplies power to the first lighting module and the second lighting module, Wherein the power control part is located in the space covered by the second upper board and the third upper board. 30. The lighting device of claim 29, wherein the power control part includes a protrusion, wherein the second wall and the third wall include a coupling groove, and the protrusion is inserted into the coupling groove. 31. The lighting device of claim 28, wherein the first upper plate and the fourth upper plate comprise ceiling fixing support frames. 32. A lighting device comprising: The first housing, the first housing includes a first bottom plate, a first wall and a first shield, the first wall extends from one end of the first bottom plate, and the first shield extends from the first shield one end of one wall extends; A first light emitting part, the first light emitting part includes a first substrate disposed on the first bottom plate and a plurality of first LEDs disposed on the first substrate; a first diffusion plate, the first diffusion plate is disposed in the first casing, disposed above the first light emitting part and combined with the first wall; The second housing, the second housing includes a second bottom plate, a second wall and a second shield, the second wall extends from one end of the second bottom plate, the second shield extends from the first one end of the second wall extends, wherein the second shutter is combined with the first shutter; A second light emitting part, the second light emitting part includes a second substrate disposed on the second bottom plate and a plurality of second LEDs disposed on the second substrate; a second diffusion plate disposed in the second housing, disposed on the second light emitting portion and combined with the second wall; a cover portion disposed between the first bottom plate and the second bottom plate; and A power control part provided in a space defined by the cover part, the first wall, the second wall, the first shutter, and the second shutter. 33. The lighting device of claim 32, wherein the first base plate and the second base plate are disposed on a plane, and wherein the cover portion is disposed below the plane. 34. The lighting device according to claim 32, further comprising a side cover covering the space so as to seal the power control part. 35. The lighting device according to claim 34, wherein the cover portion has a side cover combining groove, and wherein the side cover is combined with the side cover combining groove. 36. The lighting device according to claim 34, wherein at least one of the first shutter and the second shutter has a side cover coupling groove, and wherein the side cover and the side cover Combine grooves to combine. 37. The lighting device according to claim 32, wherein the cover part has a power control part combining groove, and wherein the power control part is combined with the power control part combining groove.