KR20150123015A - Lighting device - Google Patents

Abstract

An embodiment relates to a lighting device. The lighting device according to an embodiment comprises: a light source unit which includes a substrate having an upper surface and a lower surface, and a plurality of light emitting devices arranged on the lower surface of the substrate; a cover unit which includes a cover arranged on the upper surface of the substrate, an extended unit extended in a first direction from the cover, and a coupling unit extended in a second direction from the extended unit; a body which stores the light source unit, and is coupled to the cover unit; and an elastic member which is coupled to the coupling unit of the cover unit.

Description

LIGHTING DEVICE

An embodiment relates to a lighting device.

Light emitting diodes (LEDs) are a type of semiconductor devices that convert electrical energy into light. The light emitting diode has advantages of low power consumption, semi-permanent lifetime, fast response speed, safety, and environmental friendliness compared with conventional light sources such as fluorescent lamps and incandescent lamps. Therefore, much research has been conducted to replace conventional light sources with light emitting diodes. Light emitting diodes are increasingly used as light sources for various lamps used in indoor / outdoor, liquid crystal display devices, electric sign boards, streetlights, and the like .

An embodiment provides a lighting device in which the installation position of the elastic member is not changed or changed.

An embodiment provides a lighting device in which a tensile force of an elastic member can be reinforced.

The embodiment provides a lighting apparatus in which the elastic member does not separate from the cover portion even if the cover portion and the body are separated.

Embodiments provide an illumination device capable of improving heat dissipation efficiency.

Embodiments provide a lighting device that is light in weight.

Embodiments provide a lighting device capable of reducing manufacturing cost.

The embodiment provides a lighting device capable of ensuring durability and reliability.

The embodiment provides an illumination device in which light emitted from the light source portion is difficult to transmit through a plastic material body.

Embodiments provide an illumination device resistant to external impact.

Embodiments provide an illumination device capable of preventing shading by a wire connected to a light source portion.

Embodiments provide a lighting apparatus capable of preventing movement of a wire connected to a light source unit.

Embodiments provide an illumination device capable of improving light efficiency.

An embodiment provides a lighting device that can withstand a high voltage.

Embodiments provide a lighting apparatus that is compatible with a variety of substrates having various sizes.

Embodiments provide an illumination device capable of preventing movement and rotation of a substrate of a light source portion.

An embodiment provides an illumination device capable of easily identifying the engagement position of the cover portion when the body is engaged with the cover portion.

Embodiments provide an illumination device capable of preventing movement and rotation of a cover portion when the cover portion is coupled to the body.

Embodiments provide a lighting device that does not require a converter for converting alternating current to direct current.

A lighting apparatus according to an embodiment includes: a light source unit including a substrate including an upper surface and a lower surface; and a plurality of light emitting elements disposed on a lower surface of the substrate; A cover portion including a cover disposed on an upper surface of the substrate, an extension portion extending in the first direction in the cover, and a coupling portion extending in the second direction in the extension portion; A body for receiving the light source unit and engaging with the cover unit; And an elastic member engaged with the engaging portion of the cover portion.

A lighting device according to an embodiment includes a cover portion including a cover disposed on an upper surface of the substrate and an extension extending from the cover, the cover portion having a predetermined space defined by the cover and the extension portion; A body coupled to the light source unit and including a first body received in the space of the cover unit; And an elastic member that engages with the cover portion, wherein an extension of the cover portion has an opening in which the elastic member is disposed, and the cover portion is protruded from at least one surface of the plurality of surfaces defining the opening to the opening, And the elastic member engages with the engaging portion.

Use of the illumination device according to the embodiment has an advantage that the installation position of the elastic member is not changed or changed.

Further, there is an advantage that the tensile force of the elastic member can be reinforced.

Further, even if the cover portion and the body are separated, there is an advantage that the elastic member is not separated from the cover portion.

Further, there is an advantage that the heat radiation efficiency can be improved.

It also has the advantage of being light in weight.

In addition, there is an advantage that the manufacturing cost can be reduced.

Further, there is an advantage that durability and reliability can be ensured.

Further, there is an advantage that light emitted from the light source portion is difficult to transmit through the plastic material body.

In addition, there is an advantage of strong external shock.

Further, there is an advantage that shading due to the wire connected to the light source portion can be prevented.

In addition, there is an advantage that movement of the wire connected to the light source portion can be prevented.

Further, there is an advantage that the light efficiency can be improved.

It also has the advantage of being able to withstand high voltages.

It also has the advantage of being compatible with multiple substrates of various sizes.

Further, there is an advantage that movement and rotation of the substrate of the light source portion can be prevented.

Further, when the body is engaged with the cover portion, there is an advantage that the engagement position of the cover portion can be easily identified.

Further, when the cover portion is engaged with the body, there is an advantage that movement and rotation of the cover portion can be prevented.

Further, there is an advantage that a converter for converting AC into DC is not required.

1 is a perspective view of a lighting apparatus according to a first embodiment viewed from above;
2 is a perspective view of the lighting device shown in Fig. 1 as viewed from below.
3 is an exploded perspective view of the illumination device shown in Fig.
4 is an exploded perspective view of the illumination device shown in Fig.
5 is a cross-sectional view of the illumination device shown in Fig.
6 is a cross-sectional perspective view of the illumination device shown in Fig.
FIG. 7 is a perspective view of the light source unit 300 shown in FIG. 4. FIG.
8 is a perspective view of a light source unit 300 'having a smaller size than the light source unit 300 shown in FIG.
9 is a circuit pattern diagram of the light source unit 300 'shown in FIG.
FIG. 10 is a view for explaining a method of forming the heat conduction member 200 and the substrate 310 of the light source unit 300 shown in FIGS. 1 to 6. FIG.
11 is a top perspective view of the first body 410 shown in FIG.
12 is a bottom perspective view of the first body 410 shown in FIG.
13 is a perspective view when the light source unit 300 shown in FIG. 4 and the body 400 are coupled.
14 is a perspective view for explaining a case where there are a plurality of third guide grooves 411b-5.
15 is a perspective view showing the substrate 310 'shown in FIG. 8 coupled with the first protrusion 414-1.
16 is a perspective view showing that the substrate 310 shown in Fig. 7 is coupled with the second projection 414-3.
17 is a view showing a state in which the reflection portion 500 is disposed on the support portion 415;
18 is a view for explaining a modification of the guide portion 414 shown in Fig.
19 is an exploded perspective view of the cover member 100 and the elastic member 700 shown in Fig.
Fig. 20 is a side view of the illumination device shown in Fig. 1; Fig.
Fig. 21 is a side view of the cover portion of the illumination device shown in Fig. 20 when it is separated from the body. Fig.
22 is a perspective view of the lighting apparatus according to the second embodiment viewed from above;
23 is a perspective view of the illumination device shown in Fig. 22 as viewed from below. Fig.
24 is an exploded perspective view of the illumination device shown in Fig.
25 is an exploded perspective view of the illumination device shown in Fig.

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

In the description of the embodiments according to the present invention, in the case where an element is described as being formed "on or under" another element, the upper (upper) or lower (lower) (On or under) all include that the two elements are in direct contact with each other or that one or more other elements are indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of the lighting apparatus shown in Fig. 1, Fig. 3 is an exploded perspective view of the lighting apparatus shown in Fig. 1, Fig. 3 is an exploded perspective view of the lighting apparatus shown in Fig. 1, 4 is an exploded perspective view of the illumination device shown in Fig. 2, Fig. 5 is a sectional view of the illumination device shown in Fig. 1, and Fig. 6 is a sectional perspective view of the illumination device shown in Fig.

1 to 6, a lighting apparatus according to the first embodiment includes a cover unit 100, a heat conduction member 200, a light source unit 300, a body 400, a reflection unit 500, 600, and an elastic member 700.

The cover portion 100 is engaged with the body 400. The appearance of the illumination device according to the first embodiment can be formed by the combination of the cover part 100 and the body 400. [

The light source unit 300 may be disposed under the cover unit 100. The cover 100 may be made of a heat-dissipating material that receives heat from the light source 300 and is easily discharged to the outside. For example, the cover portion 100 may be a metallic material such as aluminum, an aluminum alloy, magnesium, a magnesium alloy, or the like.

The cover portion 100 may include a cover 110, an extension portion 130, and a coupling portion 150. The cover 110, the extension 130, and the engaging portion 150 may be integral or separately formed and connected to each other.

The cover 110 is disposed on the light source unit 300 and can be coupled to the body 400. [

The cover 110 may be in the shape of a plate having an upper surface, a lower surface, and an outer peripheral surface connected between the upper surface and the lower surface. The upper surface of the cover 110 may be exposed to the outside, and the lower surface may contact the light source unit 300 directly or indirectly.

The cover 110 may include a protrusion 111. The protrusion 111 may protrude outward from the outer circumferential surface of the cover 110. The protrusions 111 may be disposed on the outer circumferential surface of the cover 110 or on a plurality of the protrusions 111. The shape of the protrusion 111 may have a shape corresponding to the shape of the first guide groove 411b-1 of the first body 410. The protrusion 111 may be disposed in the first guide groove 411b-1. When the protrusion 111 is disposed in the first guide groove 411b-1, when the cover 100 is coupled to the body 400, movement and rotation of the cover 100 can be prevented.

The lower surface of the cover 110 may include a placement portion 113 in which the heat conduction member 200 is disposed. The arrangement portion 113 may be a cavity capable of accommodating the heat conduction member 200.

The cover 110 may have a hole 115 through which the fastening means S, such as rivets or screws, penetrate. The hole 115 can penetrate the upper surface and the lower surface of the cover 110. The cover portion 100 and the body 400 can be coupled to each other by being coupled to the coupling portion 413 of the body 400 'after the fastening means S is inserted into the hole 115.

The shape of the cover 110 may be circular, but not limited thereto, as shown in the drawings, and may be an oval or polygonal shape.

The extension portion 130 may extend in the first direction on the cover 110. [ For example, the extension portion 130 may extend outward from the outer circumferential surface of the cover 110. Since the area of the cover portion 100 is enlarged by the extension portion 130, the heat radiation efficiency can be further improved. The first direction may be a direction parallel to the upper surface or the lower surface of the cover 110.

The extension portion 130 may be disposed in the second guide groove 411b-3 of the first body 410. [ When the extension part 130 is disposed in the second guide groove 411b-3, movement and rotation of the cover part 100 can be prevented when the cover part 100 is coupled to the body 400. [

The engaging portion 150 may extend from the extending portion 130 in the second direction. For example, the engaging portion 150 may extend in a direction different from the extending direction of the extending portion 130 at the end of the extending portion 130, and may engage with the elastic member 700. The engaging portion 150 may extend from the end of the extending portion 130 in a direction perpendicular to the cover 110 or the extending portion 130. Thus, the second direction may be perpendicular to the first direction and is not limited thereto.

Since the area of the cover portion 100 is widened by the engaging portion 150, the heat radiation efficiency can be further improved. Further, since the elastic member 700 is coupled to the cover portion 100 made of a metal material having a higher strength than the plastic body 400, the lighting device according to the first embodiment can secure durability and reliability .

The light source unit 300 may be disposed below the cover unit 100 and may be disposed on the body 400. That is, the light source unit 300 may be disposed between the cover unit 100 and the body 400.

The light source unit 300 can be fixed inside the illuminating device according to the first embodiment by the combination of the cover unit 100 and the body 400. [

The light source unit 300 may include a substrate 310 and a light emitting device 330.

The substrate 310 may be a circuit pattern printed on an insulator. For example, the substrate 310 may be a printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, .

One surface (upper surface) of the substrate 310 may be in contact with the lower surface of the cover 110 of the cover portion 100 or indirectly with the lower surface of the cover 110. The upper surface of the substrate 310 may indirectly contact the lower surface of the cover 110 when the heat conductive member 200 is disposed between the substrate 310 and the cover 110.

The other surface (bottom surface) of the substrate 310 on which the light emitting device 330 is disposed can reflect light. For example, the lower surface of the substrate 310 may be coated with white or silver.

One or more light emitting devices 330 may be disposed on the lower surface of the substrate 310.

The light emitting device 330 may be a light emitting diode chip that emits red, green, or blue light, or a light emitting diode chip that emits ultraviolet light. Here, the light emitting diode may be a lateral type, a vertical type or a flip chip type, and may be a blue, a red, a yellow or a green. Light can be emitted.

The light emitting device 330 may include a light emitting structure including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer. For example, the light emitting structure may include an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer.

The first conductive semiconductor layer may include an n-type semiconductor layer and may be selected from among GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, An n-type dopant such as Se or Te can be doped.

In the active layer, electrons (or holes) injected through the first conductive type semiconductor layer and holes (or electrons) injected through the second conductive type semiconductor layer meet with each other to form an energy band corresponding to the formation material of the active layer, Is a layer which emits light due to a difference in band gap of the light emitting layer. The active layer may be formed of any one of a single well structure, a multi-well structure, a quantum dot structure, or a quantum wire structure, but is not limited thereto.

The second conductivity type semiconductor layer may be a p-type semiconductor layer and may be selected from GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, A p-type dopant such as Sr, Ba or the like may be doped.

Meanwhile, the first conductivity type semiconductor layer may include a p-type semiconductor layer and the second conductivity type semiconductor layer may include an n-type semiconductor layer. Further, a semiconductor layer including an n-type or p-type semiconductor layer may be further formed under the second conductive type semiconductor layer. Accordingly, the light emitting structure may include at least one of an n-p junction structure, a p-n junction structure, an n-p-n junction structure, and a p-n-p junction structure. The light emitting device 330 can selectively emit light in the range of the visible light band to the ultraviolet light band, and emit light having a color inherent to the semiconductor material.

A lens may be disposed on the light emitting element 330. The lens is arranged to cover the light emitting element 330. Such a lens can adjust the direction of light emitted from the light emitting device 330 or the direction of light. The lens may be formed to include a light transmitting resin such as a silicone resin or an epoxy resin. The light transmitting resin may include a phosphor dispersed wholly or partially. The shape of the lens may be, for example, a hemispherical cross-section, a concaved portion, or the like, but is not limited thereto.

When the light emitting element 330 is a blue light emitting diode, the phosphor included in the light transmitting resin may be a garnet (YAG, TAG), a silicate, a nitride, an oxynitride, Or a combination thereof.

Natural light (white light) can be realized by including only a yellow phosphor in the translucent resin. However, a green phosphor or a red phosphor may be further included to improve the color rendering index and reduce the color temperature.

When various kinds of phosphors are mixed in the light transmitting resin, the addition ratio of the phosphors may be more green series phosphors than red series phosphors, and yellow series phosphors may be used more than green series phosphors. YAG, silicate, and oxynitride systems of the garnet system may be used as the yellow phosphor, silicate system and oxynitride system may be used as the green system phosphor, and nitrides may be used as the red system phosphor. have. A layer having a red-based phosphor, a layer having a green-based phosphor, and a layer having a yellow-based phosphor may be separately formed in addition to a mixture of various kinds of phosphors in the translucent resin.

The light source unit 300 may be an alternating current module that can be driven by alternating current. If the light source unit 300 is an AC module, there is an advantage that a converter for converting an alternating current into a direct current is not necessary inside the illuminating apparatus according to the first embodiment.

7 to 9, the light source unit 300, which is an AC module, will be described in more detail.

FIG. 7 is a perspective view of the light source unit 300 shown in FIG. 4, FIG. 8 is a perspective view of the light source unit 300 'having a smaller size than the light source unit 300 shown in FIG. 7, And a circuit pattern of the light source unit 300 '.

The substrate 310 of the light source unit 300 shown in FIG. 7 is larger than the substrate 310 'of the light source unit 300' shown in FIG. That is, the diameter is larger. In addition, the number of the light emitting devices 330 of the light source unit 300 shown in FIG. 7 is larger than the number of the light emitting devices 330 of the light source unit 300 'shown in FIG. Therefore, the amount of light emitted from the light source unit 300 shown in FIG. 7 is larger than the amount of light emitted from the light source unit 300 'shown in FIG.

Referring to FIGS. 7 and 8, the substrates 310 and 310 'include central portions 311 and 311' and edge portions 313 and 313 '. A plurality of light emitting devices 330 are disposed in the central portions 311 and 311 'of the substrates 310 and 310' and input / output portions 350 are formed in the edge portions 313 and 313 'of the substrates 310 and 310' . The input / output unit 350 may be electrically connected to the wire w. When the input / output unit 350 is disposed at the edge portions 313 and 313 'of the substrates 310 and 310', the input / output unit 350 is disposed at the center portions 311 and 311 'of the substrates 310 and 310' The occurrence of shading due to the wire w can be reduced. When the input / output unit 350 is disposed at the center portions 311 and 311 'of the substrates 310 and 310', the wire w must be disposed between two adjacent light emitting devices 330. In this case, Some of the light emitted from the device 330 may be shaded by the wire w and shaded. However, in the illumination device according to the first embodiment, since the input / output unit 350 is disposed at the edge portions of the substrates 310 and 310 ', there is an advantage that shading due to the wire w can be reduced.

A fuse, a varistor, a bridge diode, an IC, and a plurality of resistors and capacitors may be disposed on the edge portions 313 and 313 'of the substrates 310 and 310'.

The light emitting devices 330 are disposed at the center portions 311 and 311 'of the substrates 310 and 310' and other electronic devices are disposed at the edge portions 313 and 313 ' The heat generated by the electronic devices can be rapidly diffused to the edge portions 313 and 313 'of the substrates 310 and 310' and the heat generated from the electronic devices can be quickly emitted to the outside. The heat dissipation efficiency of the heat sink is improved.

The substrate 310, 310 'may have at least one groove 315. The grooves 315 may be disposed at the edge portions 313 and 313 'of the substrates 310 and 310'. The grooves 315 may have a predetermined depth in the direction of the central portions 311 and 311 'of the substrates 310 and 310' from the outer peripheral surface of the substrates 310 and 310 '.

1 to 6, the heat conduction member 200 may be disposed between the cover portion 100 and the light source portion 300. As shown in FIG. The heat conduction member 200 may be disposed between the lower surface of the cover 110 of the cover unit 100 and one surface of the substrate 310 of the light source unit 300. The substrate 310 and the cover 110 can be indirectly contacted by the heat conduction member 200. [ The heat conduction member 200 can rapidly transfer heat from the light source unit 300 to the cover unit 100. [ Therefore, the lighting apparatus according to the first embodiment can improve the heat radiation efficiency.

On the other hand, the heat conduction member 200 is an optional component and may not be required. In this case, the cover 110 and the substrate 310 can be in direct contact with each other.

FIG. 10 is a view for explaining a method of forming the heat conduction member 200 and the substrate 310 of the light source unit 300 shown in FIGS. 1 to 6.

Referring to FIG. 10, the substrate 310 may include an FR-4 layer 317, a copper foil layer 318, and an adhesive layer 319. If the substrate 310 includes the FR-4 layer 317, the insulating performance is advantageous over that of the case where the substrate 310 is a metal PCB.

The FR-4 layer 317 may be a layer containing an epoxy resin and glass fiber. The copper foil layer 318 may be disposed on the upper surface of the FR-4 layer 317, and the adhesive layer 319 may be disposed on the lower surface thereof.

The copper foil layer 318 is disposed on the FR-4 layer 317 and may be a circuit pattern layer of the substrate 310. [

The light emitting device 330 shown in FIG. 4 may be disposed on the top surface of the copper foil layer 318.

The adhesive layer 319 is a layer for bonding the cover 110 and the FR-4 layer 317 to each other. The upper surface of the adhesive layer 319 is in contact with the lower surface of the FR-4 layer 317, and the lower surface thereof is in contact with the upper surface of the cover 110.

The material of the adhesive layer 319 may be acrylic resin.

The thickness of the adhesive layer 319 may be 40um or more and 60um or less. When the thickness of the adhesive layer 319 is less than 40um, the thickness of the adhesive layer 319 is too thin, so that the thickness of the adhesive layer 319 is too small, There is a problem that the adhesive force between the cover 110 and the FR-4 layer 317 is reduced and the cover 110 and the FR-4 layer 317 are easily separated from each other. Here, the thickness of the adhesive layer 319 is preferably 50 mu m.

The adhesive layer 319 is disposed between the cover 110 and the FR-4 layer 317 and can be adhered more firmly to the cover 110 and the FR-4 layer 317 through a thermal bonding process. The cover 110 and the adhesive layer 319 and the FR-4 layer 317 are more firmly in contact with the adhesive layer 319 when the adhesive layer 319 is subjected to the heat bonding process, Performance can be further improved. Further, when the adhesive layer 319 is formed by thermal bonding, there is an advantage that the thickness of the FR-4 layer 317 can be further reduced as compared with the case where the heat bonding is not performed. Therefore, it is possible to reduce the amount of FR-4 material constituting the FR-4 layer 317, thereby reducing the manufacturing cost.

Meanwhile, the cover 110 may include a plurality of pins 119. The plurality of pins 119 may protrude outward from the outer surface of the cover 110. The plurality of fins 119 can increase the surface area of the cover 110 to improve the heat radiation efficiency of the lighting apparatus according to the first embodiment. The plurality of fins 119 may be formed to have a predetermined length, or may be formed to have a larger length as shown, but the present invention is not limited thereto.

1 to 6, the body 400 is coupled to the cover unit 100, the light source unit 300, and the optical unit 600, and includes a light source unit 300 and a reflection unit 500 Can be stored.

Unlike the metal cover part 100, the body 400 may be made of a plastic material. For example, the body 400 may be a polycarbonate (PC). If the body 400 is made of a plastic material, the weight of the body 400 is lighter than that of a metal material, and the manufacturing cost can be reduced.

The body 400 may include a first body 410, a second body 430, and a third body 450. Here, the first body 410, the second body 430, and the third body 450 may be integrally formed, but the present invention is not limited thereto. The first body 410, the second body 430, The third bodies 450 may be separately manufactured and coupled to each other.

The first body 410 may be disposed under the light source unit 300 and may be coupled to the cover unit 100 and the light source unit 300.

The first body 410 may be disposed below the substrate 310 of the light source unit 300 and surround the plurality of light emitting devices 330 of the light source unit 300.

The first body 410 may be coupled to the cover 110 of the cover portion 100 by fastening means S such as rivets or screws, as shown in Fig. The fastening means S is inserted into the fastening portion 413 of the first body 410 through the hole 115 of the cover 110 shown in Figure 3 so that the first body 410 and the cover 110, Can be combined. The method of joining the first body 410 and the cover 110 is not limited thereto, but may be combined with another structure such as a hook structure.

The first body 410 will be described in detail with reference to FIGS. 11 to 13. FIG.

FIG. 11 is a perspective view of the first body 410 shown in FIG. 3, and FIG. 12 is a perspective view of the first body 410 shown in FIG. 11, (300) and the body (400) are combined with each other.

11 to 13, the first body 410 may have a cylindrical shape. However, the present invention is not limited thereto, and the first body 410 may have a shape of a polygonal cylinder or a polygonal cylinder.

The first body 410 may be a multi-walled structure, as shown in Fig. Specifically, the first body 410 may include an inner wall 411a and an outer wall 411b.

The inner wall 411a defines an opening 400h through which the light from the plurality of light emitting devices 330 passes and the outer wall 411b is disposed so as to surround the inner wall 411a and the inner wall 411a and the outer wall 411b, Are spaced apart from each other by a predetermined distance. A predetermined space 411c may be formed between the outer wall 411b and the inner wall 411a. The light emitted from the light source unit 300 is difficult to transmit through the first body 410 if the first body 410 made of plastic includes the inner wall 411a and the outer wall 411b. Further, the weight of the first body 410 can be further reduced as compared with the case where the first body 410 has a single-wall structure, which is advantageous in that the material cost can be reduced.

The inner wall 411a includes an outer surface facing the inner surface of the outer wall 411b and an inner surface defining the opening 400h and the outer wall 411b includes an inner surface facing the inner wall 411a and an inner surface And an outer surface.

The thicknesses of the inner wall 411a and the outer wall 411b may be 1 to 2 T (mm), respectively. If the thickness of the inner wall 411a and the outer wall 411b is less than 1T, the light emitted from the light source 300 can easily pass through the inner wall 411a and the outer wall 411b, If the thickness of the outer wall 411a and the outer wall 411b is larger than 2T, there is a problem that it is difficult to secure a space between the inner wall 411a and the outer wall 411b. Each of the thickness of the inner wall 411a and the outer wall 411b is preferably 1.5T.

The interval between the inner wall 411a and the outer wall 411b may be 8 to 12 T (mm). If the distance between the inner wall 411a and the outer wall 411b is less than 8T, there is a problem that the light emitted from the light source 300 can transmit through the outer wall 411b. ) Is weakened. For example, the interval between the inner wall 411a and the outer wall 411b may be 10T.

The inner wall 411a and the outer wall 411b may be connected to each other. The lower wall 411d of the first body 410 shown in Fig. 12 can connect the inner wall 411a and the outer wall 411b to each other. The lower wall 411d of the first body 410 can securely support or support the inner wall 411a and the outer wall 411b by connecting the inner wall 411a and the outer wall 411b to each other. Here, the inner wall 411a, the outer wall 411b, and the lower wall 411d define the predetermined space 411c.

The lower wall 411d may have a fastening hole 411d-1 in which the connecting portion 630 of the optical portion 600 is disposed. The connection part 630 is inserted into the fastening hole 411d-1 so that the body 400 and the optical part 600 can be coupled to each other.

The outer wall 411b may include a locking protrusion 412. The latching jaw 412 may be disposed on the inner surface of the outer wall 411b. The latching jaw 412 can engage with the connecting portion 630 of the optical unit 600. The hook formed at the upper end of the connecting portion 630 can be caught and fixed to the hooking jaw 412. [ Here, although not shown in the drawings, the latching jaw 412 may be disposed on the outer surface of the inner wall 411a.

An auxiliary wall 411e may be disposed between the inner wall 411a and the outer wall 411b. One end of the auxiliary wall 411e may be connected to the inner wall 411a and the other end may be connected to the outer wall 411b. The auxiliary wall 411e can maintain a constant distance between the inner wall 411a and the outer wall 411b and protect the first body 410 from an external impact.

A fastening portion 413 may be disposed between the inner wall 411a and the outer wall 411b. The fastening portion 413 has a groove to be engaged with the fastening means S and one end can be connected to the inner wall 411a and the other end can be connected to the outer wall 411b. The fastening part 413 can maintain a constant distance between the inner wall 411a and the outer wall 411b and protect the first body 410 from an external impact.

The inner wall 411a can define an opening 400h. For example, the inner surface of the inner wall 411a may define an opening 400h. Through the opening 400h, the light emitted from the light source portion 300 can be emitted to the outside of the illuminating device according to the first embodiment.

The outer wall 411b may have a first guide groove 411b-1 and a second guide groove 411b-3 as shown in Fig. The first guide groove 411b-1 and the second guide groove 411b-3 have different shapes. The first guide groove 411b-1 may have a shape corresponding to the protrusion 111 and the second guide groove 411b-3 may have a shape corresponding to the extending portion 130. The first guide groove 411b-1 and the second guide groove 411b-3 can easily identify the engagement position of the cover portion 100 when the first body 410 is engaged with the cover portion 100 And it is possible to provide convenience in the manufacturing process.

The outer wall 411b may have a third guide groove 411b-5 as shown in Fig. The third guide groove 411b-5 may be formed at a predetermined depth from one surface of the outer wall 411b defining the first guide groove 411b-1.

The wire (w) shown in Figs. 7 to 8 may be disposed in the third guide groove 411b-5. The width of the third guide groove 411b-5 may be smaller than the thickness of the wire w. If the width of the third guide groove 411b-5 is smaller than the thickness of the wire w, the wire w can be fitted and fixed in the third guide groove 411b-5, . The width of the third guide groove 411b-5 is smaller than the thickness of the wire w and the width of the wire w is smaller than the thickness of the wire w when the wire w includes the conductor line and the covering portion surrounding the conductor line. May be greater than the thickness of the conductor line. In this case, since the cover portion of the wire w is fitted in the third guide groove 411b-5, the movement of the wire w can be restricted.

Since the first guide groove 411b-1 is disposed on the third guide groove 411b-5, the wire w is inserted into the third guide groove 411b-5, and then the first guide groove 411b-1 The wire w can be stably fixed to the third guide groove 411b-5 because the protrusion 111 of the cover 110 disposed in the first guide groove 411b-5 blocks the third guide groove 411b-5.

The third guide groove 411b-5 may correspond to the number of the wires w. That is, if the number of the wires w is plural, the number of the third guide grooves 411b-5 may be plural. This will be described with reference to Fig.

Fig. 14 is a perspective view for explaining a case where there are a plurality of third guide grooves 411b-5.

Referring to FIG. 14, two third guide grooves 411b-5 corresponding to the first and second wires w1 and w2 may be disposed on the outer wall 411b. Here, the width of the third guide groove 411b-5 may be smaller than the thickness of the wires w1 and w2. If the width of the third guide groove 411b-5 is formed smaller than the thickness of the wires w1 and w2, the movement of the wires w1 and w2 can be prevented.

Referring again to FIGS. 11-13, the first body 410 may include a guide portion 414. The guide portion 414 may extend from the inner surface of the inner wall 411a to the opening 400h. Here, the guide portion 414 may be disposed on the inner surface of the first body 410 formed of a single wall as well as the first body 410 formed of a double wall.

The guide portion 414 is disposed below the edge portion 313 of the substrate 310 shown in Fig. 7 so that the substrate 310 does not fall through the opening 400h, as shown in Figs. 6 and 13 The substrate 310 can be supported.

The guide portion 414 may include an upper surface and a lower surface. Here, the upper surface of the guide portion 414 can contact the lower surface of the substrate 310.

6, the guide portion 414 supports the substrate 310, and the fastening means S penetrates the hole 115 of the cover 110 shown in Fig. 3 to engage with the fastening portion 413, The lighting apparatus according to the first embodiment is advantageous in that it can withstand a high voltage. Specifically, in the conventional lighting apparatus, the substrate of the light source unit is directly coupled to the heat discharging body by fastening means such as screws. As described above, when the substrate is directly coupled to the heat discharging body by screws, there is a problem that a short-circuit phenomenon occurs when a high voltage is applied to a conventional lighting apparatus, and the light source unit is damaged. However, in the illuminating device according to the first embodiment, since the guide portion 414 supports the substrate 310 and the inner surface of the inner wall 411a protects the side surface of the substrate 310, A separate fastening means for fixing to the cover 110 is not required. Therefore, the lighting apparatus according to the first embodiment has an advantage that a short phenomenon does not occur even at a high voltage. Specifically, when the substrate 310 is a metal PCB, a short circuit phenomenon may not occur even at a high voltage of 4 KV or more.

The guide portion 414 of the first body 410 may include protrusions 414-1 and 414-3. The protrusions 414-1 and 414-3 may be disposed on the upper surface of the guide portion 414. [ The protrusions 414-1 and 414-3 may protrude upward from the upper surface of the guide portion 414. [ The protrusions 414-1 and 414-3 may be engaged with the grooves 315 of the substrates 310 and 310 'shown in FIGS. The protrusions 414-1 and 414-3 are coupled to the grooves 315 of the substrates 310 and 310 'to prevent movement and rotation of the substrates 310 and 310'.

The projections 414-1 and 414-3 may include a plurality of first projections 414-1 and second projections 414-3. The first protrusion 414-1 may be arranged farther from the inner wall 411a than the second protrusion 414-3. Further, the second protrusion 414-3 may be disposed between the first protrusion 414-1 and the inner wall 411a.

By the first projections 414-1 and the second projections 414-3, the illumination apparatus according to the first embodiment can be compatible with various substrates having various sizes. More specifically, the description will be made with reference to Figs. 15 to 16. Fig.

FIG. 15 is a perspective view showing the substrate 310 'shown in FIG. 8 coupled with the first protrusion 414-1, FIG. 16 is a perspective view showing the substrate 310 shown in FIG. 7 protruding from the second protrusion 414-3 ). ≪ / RTI >

Referring to FIG. 15, a first protrusion 414-1 is disposed in a groove 315 of the substrate 310 'shown in FIG. 8, and FIG. 16 is a plan view of the substrate 310 shown in FIG. And the second projection 414-3 may be disposed in the groove 315. [

Here, the height of the second protrusion 414-3 with respect to the upper surface of the guide portion 414 may be higher than the height of the first protrusion 414-1. If the height of the second protrusion 414-3 is higher than the height of the first protrusion 414-1, the edge of the substrate 310 shown in Fig. 7 can be disposed on the first protrusion 414-1 , The groove 315 of the substrate 310 can engage with the second projection 414-3.

On the other hand, the heights of the second projections 414-3 and the first projections 414-1 may be the same. In this case, the grooves 315 of the first substrate 310 shown in FIG. 7 may have a shape capable of accommodating the first projections 414-1 and the second projections 414-3 together.

The illuminating device according to the first embodiment including the first protrusion 414-1 and the second protrusion 414-3 has a structure in which the substrate 310 shown in Fig. 7 and the substrate 310 shown in Fig. Lt; RTI ID = 0.0 > 310 '. ≪ / RTI > Therefore, the illumination apparatus according to the first embodiment has an advantage that it is not necessary to fabricate the body 400 corresponding to each light quantity of the light source unit 300 or each substrate.

Meanwhile, the guide portion 414 of the first body 410 may include the substrate 310 shown in FIG. 7 having no first protrusion 414-1 and the second protrusion 414-3, The substrate 310 'shown in FIG. 8 may be selectively used. This will be described in detail with reference to FIG.

FIG. 18 is a view for explaining a modification of the guide portion 414 shown in FIG.

Referring to FIG. 18, a guide portion 414 'protruding from the inner surface of the inner wall 411a can selectively guide the substrate 310 shown in FIG. 7 and the substrate 310' shown in FIG. 8 . Here, it is assumed that the thickness of the substrate 310 shown in FIG. 7 is thinner than the thickness of the substrate 310 'shown in FIG. 8, but the thickness of the substrates 310 and 310' is not limited thereto.

The upper surface of the guide portion 414 'is divided into a first surface 414'-1 for supporting the substrate 310' shown in FIG. 8 and a second surface 414'-1 for supporting the substrate 310 shown in FIG. '-2). The first surface 414'-1 and the second surface 414'-2 may not be disposed on the same plane but may be disposed on different planes. For example, the second surface 414'-2 may be disposed at a higher position than the first surface 414'-1. Therefore, a predetermined stepped surface 414'-3 may be disposed between the first surface 414'-1 and the second surface 414'-2.

When the substrate 310 'shown in FIG. 8 is disposed on the guide portion 414', the edge portion of the substrate 310 'is disposed on the first surface 414'-1 and the edge portion 414'- 3) guides the substrate 310 ', the substrate 310' can be stably fixed to the first body 410.

On the other hand, when the substrate 310 shown in FIG. 7 is disposed on the guide portion 414 ', the edge portion of the substrate 310 is disposed on the second surface 414'-2 and the inner portion of the inner wall 411a Since the side surface guides the substrate 310, the substrate 310 can be stably fixed to the first body 410.

18, the first surface 414'-1, the second surface 414'-2, and the stepped surface 414'-3 of the guide portion 414 ' The substrate 310 shown in FIG. 8 and the substrate 310 'shown in FIG. 8 can be selectively used.

18, the side surface of the substrate 310 and the side surface of the substrate 310 'are spaced a predetermined distance from the inner surface of the inner wall 411a, which is a design that can be exhibited when the illumination device according to the embodiment is actually manufactured . There may be no error in the design. That is, the side surface of the substrate 310 and the side surface of the substrate 310 'can contact the inner surface of the inner wall 411a.

Referring again to FIGS. 11-13, the first body 410 may include a support 415. The support portion 415 may protrude from the inner surface of the inner wall 411a to the opening 400h. The support portion 415 may be disposed on the edge portion of the substrate 310.

The reflector 500 shown in FIGS. 3 to 4 may be disposed on the support portion 415. A state in which the reflecting portion 500 is disposed on the supporting portion 415 is shown in Fig.

As shown in FIG. 17, the supporting portion 415 can support the reflecting portion 500 on the light source portion 300. To this end, the support portion 415 may include a support surface for supporting the reflection portion 500, as shown in Figs. The supporting surface may be an inclined surface having a predetermined angle with the upper surface of the substrate 310. Here, the angle between the support surface and the upper surface of the substrate 310 may be an obtuse angle. The inclination angle of the support surface may correspond to the inclination angle of the reflective portion 500.

Referring again to FIGS. 11-13, the first body 410 may include a lid 416. The lid portion 416 may protrude from the inner surface of the inner wall 411a to the opening 400h. Although the lid 416 is shown as being disposed on the inner surface of the inner wall 411a of the first body 410 having a double wall structure, the lid 416 is formed of a single body It may be disposed on the inner side. It should be noted that the lid 416 may be disposed on the inner surface of the first body 410 when the first body 410 is a single wall structure including an inner side surface and an outer side surface.

Here, the cover portion 416 may be integral with the inner surface of the inner wall 411a. That is, the lid portion 416 may be a portion of the inner surface of the inner wall 411a. In this case, the distance between the lid part 416 and the outer wall 411b is not constant, and the distance from the lower end of the lid part 416 to the upper end of the lid part 416 can be widened.

The lid portion 416 may be disposed on the edge portions 313 and 313 'of the light source portions 300 and 300' shown in Figs.

13, the lid part 416 is disposed on the input / output part 350 of the light source part 300 or 300 'shown in FIG. 7 to FIG. 8 and includes the input / output part 350 and the wire w, . The lid part 416 can prevent the generation of shading due to the wire w connected to the input / output part 350 when the light is emitted from the light emitting element 330 of the light source part 300. In other words, if there is no lid portion 416, the shade due to the wire w may appear on the diffuser plate 610 of the optical portion 600. Since the lid portion 416 is present, It is. Therefore, the illumination device according to the first embodiment including the lid portion 416 has an advantage that shading by the wire can be prevented, and light efficiency can also be improved.

The lid part 416 can support the reflecting part 500 together with the supporting part 415. [ For this purpose, the lid portion 416 may include a support surface for supporting the reflective portion 500.

The supporting surface may have a shape corresponding to the reflecting portion 500. For example, when the outer surface of the reflecting portion 500 is flat, the supporting surface may be flat corresponding thereto. Further, when the outer surface of the reflecting portion 500 is curved, the supporting surface may be bent correspondingly.

The supporting surface may be an inclined surface having a predetermined angle with the upper surface of the substrate 310. The supporting surface of the lid part 416 may have the same inclination angle with respect to the supporting surface of the supporting part 415 and the lower surface of the substrate 310. If the supporting surface of the lid part 416 has the same inclination angle with respect to the supporting surface of the supporting part 415 and the lower surface of the substrate 310, the reflecting part 500 can be more stably supported. Particularly, when the reflective portion 500 is made of a paper material, it is possible to prevent the reflective portion 500 from being damaged by an external impact.

1 to 6, the second body 430 is disposed under the first body 410 and extends from the lower wall 411d of the first body 410 shown in FIG. 12 .

The second body 430 may have a cylindrical shape.

The second body 430 may extend in a direction in which the diameter of the second body 430 increases in the lower wall 411d of the first body 410, as shown in FIG.

The second body 430 may include an outer surface and an inner surface. The outer surface may be exposed to the outside and the inner surface may include protrusions and depressions 435 for diffusing or scattering the light emitted from the diffuser plate 610 of the optical unit 600.

The third body 450 may be disposed below the second body 430 and may extend from the end of the second body 430. [

The third body 450 can be disposed under the ceiling where the illumination device according to the first embodiment is installed.

The reflective portion 500 is disposed below the light source portion 300.

The reflector 500 may be disposed within the body 400. For example, the reflector 500 may be disposed in the opening 400h of the body 400. [

The reflection part 500 is supported by the support part 415 and the lid part 416 of the first body 410 and is coupled with the body 400 by the optical part 600 and the body 400, Can be fixed.

The reflective portion 500 may include an inner surface that reflects light from the plurality of light emitting devices 330 and an outer surface that is disposed on the lid portion 416 and the support portion 415.

The reflection unit 500 may reflect the light emitted from the light emitting device 330 to the diffusion plate 610 and reflect the light returned from the diffusion plate 610 to the diffusion plate 610 again.

The upper end of the reflector 500 may be disposed on the upper surface of the substrate 310 of the light source unit 300 and the lower end thereof may be disposed on the diffuser plate 610 of the optical unit 600.

The reflective portion 500 may have a cylindrical shape, and the diameter of the opening at the upper end may be a cylindrical shape smaller than the diameter of the opening at the lower end. For example, the reflective portion 500 may have a truncated conical shape.

The reflector 500 may be made of a metal material capable of reflecting light, or may be a sheet of white paper.

The optical unit 600 may be coupled to the body 400 and disposed under the reflection unit 500.

The optical unit 600 may include a diffusion plate 610 for diffusing light incident from the light source unit 300 and the reflection unit 500 and a connection unit 630 for coupling the body 400.

The diffuser plate 610 may include a diffuser in order to diffuse incident light. The diffusion plate 610 may have a downward convex shape in order to facilitate diffusion of incident light.

The connection portion 630 may protrude upward from the edge portion of the diffusion plate 610. The connection portion 630 may be engaged with the fastening hole 411d-1 of the body 400. [ The connecting portion 630 can be inserted into the fastening hole 411d-1.

The connecting portion 630 may have a hook at its upper end. The hook of the connection portion 630 can be engaged with the engagement protrusion 412 of the body 400 after passing through the fastening hole 411d-1 of the body 400. [ By hooking the hook of the connecting portion 630 on the upper surface of the latching jaw 412, the optical portion 600 and the body 400 can be tightly coupled with each other.

One or more connecting portions 630 may be provided and the number of the connecting portions 630 may correspond to the number of the coupling holes 411d-1 of the body 400. [

The elastic member 700 is engaged with the cover portion 100. The elastic member 700 can engage with the engaging portion 150 of the cover portion 100.

The elastic member 700 presses the upper surface of the tent where the lighting apparatus according to the first embodiment is installed. That is, the ceiling is disposed between the elastic member 700 and the third body 450 of the body 400. Since the elastic member 700 is urged toward the third body 450, the lighting apparatus according to the first embodiment can be firmly fixed to the ceiling.

Referring to FIG. 19, the elastic member 700 will be described in detail.

19 is an exploded perspective view of the cover member 100 and the elastic member 700 shown in Fig.

Referring to FIG. 19, the elastic member 700 may include a first torsion spring 710, a second torsion spring 730, and a fixing portion 750.

The first torsion spring 710 may include a first spiral portion 711 and one end portion 713 and the other end portion 715 of the first spiral portion 711.

The first spiral portion 711 may be one wire wound in a spiral direction. The first helical portion 711 can be fitted to the first shaft portion 151-1 of the engaging portion 150 of the cover portion 100. [

The one end portion 713 may be connected to the fixing portion 750. Here, the one end portion 713 and the fixing portion 750 may be integrated.

The other end 715 has a first part 715-1 connected to the first helical part 711 and disposed on the outer surface of the coupling part 150 and a second part 715-1 connected to the first part 715-1 at the end of the first part 715-1. And a second part 715-2 extending in a direction different from the longitudinal direction of the part 715-1 and coupled with the first hole 153-1 of the engaging part 150. [ The length of the second part 715-2 is greater than the thickness of the engaging part 150 and the end of the second part 715-2 passes through the first hole 153-1 and is adjacent to the body 400 . Here, the longitudinal direction of the second part 715-2 may be perpendicular to the longitudinal direction of the first part 715-1, but is not limited thereto.

The second torsion spring 730 may include a second spiral portion 731 and one end portion 733 and the other end portion 735 of the second spiral portion 731.

The second spiral portion 731 may be a wire wound in a spiral direction. The second spiral portion 731 can be fitted to the second shaft portion 151-2 of the engaging portion 150 of the cover portion 100. [

The one end portion 733 may be connected to the fixing portion 750. Here, the one end portion 733 and the fixing portion 750 may be integral.

The other end 735 has a first part 735-1 connected to the second spiral part 731 and disposed on the outer surface of the coupling part 150 and a second part 735-1 connected to the first part 735-1 at the end of the first part 735-1. And a second part 735-2 extending in a direction different from the longitudinal direction of the part 735-1 and coupled with the second hole 153-2 of the engaging part 150. [ The second part 735-2 has a length greater than the thickness of the coupling part 150 and the end of the second part 735-2 passes through the second hole 153-2 and is inserted into the body 400 Can be disposed adjacent to each other. Here, the longitudinal direction of the second part 735-2 may be perpendicular to the longitudinal direction of the first part 735-1, but is not limited thereto.

The fixing portion 750 is disposed between the first torsion spring 710 and the second torsion spring 730. Specifically, one end of the fixing portion 750 may be connected to one end 713 of the first torsion spring 710, and the other end may be connected to the one end 733 of the second torsion spring 730.

The fixing portion 750 can press the upper surface of the ceiling where the lighting apparatus according to the first embodiment is installed to fix the lighting apparatus according to the first embodiment to the ceiling.

The fixing portion 750 may have a " U " shape. However, the present invention is not limited thereto and includes any shape capable of pressing the ceiling.

The coupling portion 150 may include first and second shaft portions 151-1 and 151-2 and first and second holes 153-1 and 153-2.

The first and second holes 153-1 and 153-2 may be disposed on the first and second shaft portions 151-1 and 151-2.

The first shaft portion 151-1 is disposed at the lower end of the engaging portion 150 and engages with the first helical portion 711 of the first torsion spring 710. [ The first spiral part 711 can be coupled to the coupling part 150 by the first shaft part 151-1 and can rotate with the first shaft part 151-1 as the rotation axis.

The second shaft portion 151-2 is disposed at the lower end of the engaging portion 150 and engages with the second spiral portion 731 of the second torsion spring 730. The second spiral portion 731 can be coupled to the engaging portion 150 by the second shaft portion 151-2 and can rotate with the second shaft portion 151-2 as the rotation axis.

The end of the first shaft portion 151-1 and the end of the second shaft portion 151-2 may be disposed to face each other. The first torsion spring 710 and the second torsion spring 730 are disposed on the first axis 151-1 and the second axis 151-2 so that the first axis 151- 1 and the second shaft portion 151-2.

The first hole 153-1 may be disposed on the first shaft portion 151-1 and the second hole 153-2 may be disposed on the second shaft portion 151-2. The other end 715 of the first torsion spring 710 is inserted into the first hole 153-1 and the other end 735 of the second torsion spring 730 is inserted into the second hole 153-2. .

20 and 21, the effects of the cover portion and the elastic member shown in Fig. 19 will be described.

Fig. 20 is a side view of the lighting apparatus shown in Fig. 1, and Fig. 21 is a side view when the cover portion of the lighting apparatus shown in Fig. 20 is separated from the body.

19 and 20, the first part 715-1 of the other end 715 of the elastic member 700 is supported on the outer surface of the engaging part 150 of the cover part 100, Since the elastic member 715-2 is inserted into the first hole 153-1 of the engaging portion 150 of the cover portion 100, the tensile force of the elastic member 700 can be reinforced, Since the second part 715-2 of the elastic member 700 is difficult to escape from the first hole 153-1 of the engaging part 150 even if a very strong tensile force is applied to the elastic member 700, There is an advantage that the position is not changed or changed.

19 and 21, when the cover part 100 is separated from the body 400, the first spiral part 711 of the elastic member 700 contacts the first shaft part 151-1 of the connection part 150, The other end portion 715 of the elastic member 700 is caught in the first hole 153-1 of the engaging portion 150 of the cover portion 100. Therefore, There is an advantage that the end portion 715 does not come off from the first hole 153-1 of the engaging portion 150 of the cover portion 100. [

FIG. 22 is a perspective view of the illumination apparatus according to the second embodiment viewed from above, FIG. 23 is a perspective view of the illumination apparatus shown in FIG. 22 viewed from below, FIG. 24 is an exploded perspective view of the illumination apparatus shown in FIG. 22, 25 is an exploded perspective view of the illumination device shown in Fig.

22 to 25, a lighting apparatus according to the second embodiment includes a cover unit 100 ', a heat conduction member 200, a light source unit 300, a body 400', a reflection unit 500, A portion 600 and an elastic member 700 '. Here, the heat conduction member 200, the light source unit 300, the reflection unit 500, and the optical unit 600 include the heat conduction member 200, the light source unit (not shown) of the illumination apparatus according to the first embodiment shown in Figs. 300, the reflection unit 500, and the optical unit 600, the description thereof will be omitted.

The cover part 100 'accommodates the light source part 300 and can be coupled to the body 400'.

The cover portion 100 'may include a cover 110', an extension portion 130 ', and a coupling portion 150'.

The material of the cover part 100 'is the same as that of the cover part 100 shown in FIGS. 1 to 6.

The cover 110 ', the extension 130' and the engaging portion 150 'may be integrally formed.

The cover 110 'may have a plate shape including an upper surface, a lower surface, and an outer peripheral surface connected between the upper surface and the lower surface. The upper surface of the cover 110 'may be exposed to the outside, and the lower surface may contact the light source unit 300 directly or indirectly.

The cover 110 'may have a hole 115 through which the fastening means S, such as rivets or screws, penetrate. The hole 115 can penetrate the upper surface and the lower surface of the cover 110 '. The cover unit 100 'and the body 400' can be coupled to each other by being coupled to the fastening unit 413 'of the body 400' after the fastening means S is inserted into the hole 115.

The shape of the cover 110 'viewed from above may be circular, but not limited thereto, as shown in the figure, and may be elliptical or polygonal.

The extension 130 'may extend from the outer circumferential surface of the cover 110'. Since the area of the cover portion 100 'is enlarged by the extension portion 130', the heat radiation efficiency can be further improved. The extending direction of the extension portion 130 'may be a direction perpendicular to the upper surface or the lower surface of the cover 110', but is not limited thereto.

The shape of the extension 130 'may be cylindrical. Accordingly, the extension part 130 'may have a space 170' in which the light source part 300 and a part of the body 400 'can be housed therein in combination with the cover 110'.

The extension 130 'may have an opening 135'. The engaging portion 150 'and the elastic member 700' may be disposed in the opening 135 '. The opening 135 'corresponds to the number of the elastic members 700', and may be at least two or more.

The engaging portion 150 'can be engaged with the elastic member 700' to stably fix the elastic member 700 'to the cover portion 100'.

The engaging portion 150 'may protrude into the opening 135' on at least one of the plurality of faces defining the opening 135 'of the extension 130'.

The engaging portion 150 'may be one, and may be disposed to face each other and extend to two facing surfaces of a plurality of surfaces defining the opening 135', as shown in the figure.

Since the cover portion 100 'is widened by the engaging portion 150', the heat radiation efficiency can be further improved. In addition, since the elastic member 700 'is coupled to the cover 100' made of metal rather than the plastic body 400 ', the lighting apparatus according to the second embodiment can secure durability and reliability.

The body 400 'may be combined with the cover 100', the light source 300 and the optical unit 600 and may house the reflector 500 therein.

Unlike the metal cover 100 ', the body 400' may be made of a plastic material. For example, the body 400 'may be a polycarbonate (PC). If the body 400 'is made of a plastic material, the weight of the body 400' is lighter than that of a metal material, and the manufacturing cost can be reduced.

The body 400 'may include a first body 410', a second body 430 ', and a third body 450'. Here, the first body 410 ', the second body 430', and the third body 450 'may be integrally formed, but the present invention is not limited thereto. The first body 410', the second body 410 ' The first body 430 'and the third body 450' may be separately manufactured and coupled to each other.

The first body 410 'is disposed below the light source unit 300 and can be coupled to the cover unit 100' and the light source unit 300.

The first body 410 'may be coupled to the cover 110' of the cover portion 100 'by fastening means S such as rivets or screws. The fastening means S is inserted into the fastening portion 413 'of the first body 410' through the hole 115 of the cover 110 'so that the first body 410' and the cover 110 ' Can be combined.

The first body 410 'has a cylindrical shape and may have a single wall structure.

The first body 410 'may be disposed within the space 170' within the cover portion 100 '.

The first body 410 'may support the substrate 310 of the light source unit 300. For example, the upper end of the first body 410 'may support the edge of the substrate 310.

The first body 410 'may include a fastening portion 413'. The fastening portion 413 'may be disposed on the outer surface of the first body 410'.

The fastening portion 413 'may engage with the groove 315 of the substrate 310. The fastening portion 413 'may be a plurality of fastening portions 413' corresponding to the number of the grooves 315 of the substrate 310.

The coupling position of the substrate 310 and the first body 410 'can be easily confirmed by the coupling part 413'.

Since the first body 410 'supports the substrate 310 and the fastening means S is fastened to the fastening portion 413' through the hole 115 of the cover 110 ' Has the advantage of being able to withstand high voltages. Specifically, in the conventional lighting apparatus, the substrate of the light source unit is directly coupled to the heat discharging body by fastening means such as screws. As described above, when the substrate is directly coupled to the heat discharging body by screws, there is a problem that a short-circuit phenomenon occurs when a high voltage is applied to a conventional lighting apparatus, and the light source unit is damaged. However, in the illumination device according to the second embodiment, the first body 410 'supports the substrate 310 and the substrate 310 is fixed by the engagement of the cover part 100' and the first body 410 ' A separate fastening means for fixing the substrate 310 to the cover 110 is not necessary. Therefore, the lighting apparatus according to the second embodiment has an advantage that a short phenomenon does not occur even at a high voltage.

The first body 410 'may include a fastening hole 411d-1'. The fastening hole 411d-1 'can be engaged with the connection part 630 of the optical part 600. [

The second body 430 'may be disposed below the first body 410' and extend from the first body 410 '. The second body 430 'may diffuse or scatter light emitted from the optical unit 600.

The third body 450 'may be disposed below the second body 430' and extend from the second body 430 '.

The elastic member 700 'is engaged with the cover portion 100'. . The elastic member 700 'can engage with the engaging portion 150' of the cover portion 100 '.

The elastic member 700 'presses the upper surface of the tent where the illumination device according to the second embodiment is installed. That is, the ceiling is disposed between the elastic member 700 'and the third body 450' of the body 400 '. Since the elastic member 700 'is urged toward the third body 450', the lighting apparatus according to the second embodiment can be firmly fixed to the ceiling.

The elastic member 700 'may include a spiral portion 710' and a fixing portion 750 '.

The spiral portion 710 'may be one wire wound in a spiral direction.

The helical portion 710 'may be fitted to the coupling portion 150' of the cover portion 100 '. The helical portion 710 'can be rotated about the coupling portion 150' of the cover portion 100 '.

The fixing portion 750 'may be such that both ends of the spiral portion 710' are extended and connected to each other.

The fixing portion 750 'can press the upper surface of the ceiling where the lighting apparatus according to the second embodiment is installed, thereby fixing the lighting apparatus according to the second embodiment to the ceiling.

The fixing portion 750 'may have a "U" shape. However, the present invention is not limited thereto and includes any shape capable of pressing the ceiling.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100:
200: heat conduction member
300: light source
400: Body
500:
600: optical part
700: elastic member

Claims (10)

A light source unit including a substrate including an upper surface and a lower surface and a plurality of light emitting elements disposed on a lower surface of the substrate;
A cover portion including a cover disposed on an upper surface of the substrate, an extension portion extending in the first direction in the cover, and a coupling portion extending in the second direction in the extension portion;
A body for receiving the light source unit and engaging with the cover unit; And
An elastic member engaging with an engaging portion of the cover portion;
. The method according to claim 1,
Wherein the engaging portion of the cover portion includes first and second holes and first and second shaft portions,
Wherein the elastic member includes a first torsion spring, a second torsion spring, and a fixing portion connected to the first torsion spring and the second torsion spring,
Wherein the first torsion spring includes a first spiral portion fitted to the first shaft portion of the coupling portion, an end portion connected to the fixed portion, and the other end portion coupled to the first hole of the coupling portion,
Wherein the second torsion spring includes a second spiral portion fitted to the second shaft portion of the engagement portion, one end connected to the fixed portion, and the other end coupled to the second hole of the engagement portion. 3. The method of claim 2,
Wherein the other end of the first torsion spring includes a first part supported by an outer surface of the engaging part and a second part inserted into the first hole,
And an end of the second part is disposed adjacent to the body through the first hole. 3. The method of claim 2,
And an end of the first shaft portion and an end of the second shaft portion are disposed to face each other. The method according to claim 1,
The first direction of the extension portion and the second direction of the engagement portion being perpendicular to each other. The method according to claim 1,
Wherein the cover portion is made of a metal material, and the body is made of a plastic material. A light source unit including a substrate including an upper surface and a lower surface and a plurality of light emitting elements disposed on a lower surface of the substrate;
A cover including a cover disposed on an upper surface of the substrate and an extension extending from the cover, the cover having a predetermined space defined by the cover and the extension;
A body coupled to the light source unit and including a first body received in the space of the cover unit;
And an elastic member engaged with the cover portion,
Wherein the extension of the cover portion has an opening in which the elastic member is disposed,
Wherein the cover portion includes a coupling portion protruding from the at least one surface among the plurality of surfaces defining the opening,
And the elastic member engages with the engagement portion. 8. The method of claim 7,
Wherein the elastic member includes a helical portion fitted to the coupling portion and a fixing portion connected to both ends of the helical portion. 8. The method of claim 7,
Wherein the engaging portion extends from two surfaces of the plurality of surfaces facing each other, and is arranged to face each other. 8. The method of claim 7,
The cover of the cover portion has a hole,
Wherein the first body includes a fastening portion disposed on an outer surface of the first body,
The fastening means is coupled to the hole of the cover and the fastening portion of the first body,
Wherein the substrate has a groove that engages with the fastening portion.

Images