KR102208333B1 - Lighting device - Google Patents

Abstract

The embodiment relates to a lighting device.
A lighting device 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 the lower surface of the substrate; A cover portion including a cover disposed on an upper surface of the substrate, an extension portion extending from the cover in a first direction, and a coupling portion extending from the extension portion in a second direction; A body accommodating the light source unit and coupled to the cover unit; And an elastic member coupled to the coupling part of the cover part.

Description

Lighting device {LIGHTING DEVICE}

The embodiment relates to a lighting device.

A light emitting diode (LED) is a type of semiconductor device that converts electrical energy into light. Light-emitting diodes have advantages of low power consumption, semi-permanent life, fast response speed, safety, and environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps. Accordingly, many studies are being conducted to replace the conventional light source with light-emitting diodes, and the use of light-emitting diodes is increasing as a light source for lighting devices such as various lamps, liquid crystal displays, electric signs, and street lights used indoors and outdoors. .

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

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

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

The embodiment provides a lighting device capable of improving heat dissipation efficiency.

The embodiment provides a lighting device having a light weight.

The embodiment provides a lighting device in which manufacturing cost can be reduced.

The embodiment provides a lighting device that can ensure durability and reliability.

The embodiment provides a lighting device in which light emitted from a light source unit is difficult to pass through a plastic body.

The embodiment provides a lighting device that is resistant to external impact.

The embodiment provides a lighting device capable of preventing the occurrence of shade due to a wire connected to a light source unit.

The embodiment provides a lighting device capable of preventing movement of a wire connected to a light source unit.

The embodiment provides a lighting device capable of improving light efficiency.

The embodiment provides a lighting device that can well withstand high voltage.

The embodiment provides a lighting device compatible with various substrates having various sizes.

The embodiment provides a lighting device capable of preventing the movement and rotation of the substrate of the light source unit.

The embodiment provides a lighting device capable of easily identifying the engaging position of the cover portion when the body is engaged with the cover portion.

The embodiment provides a lighting device capable of preventing movement and rotation of the cover portion when the cover portion is coupled to the body.

The embodiment provides a lighting device that does not require a converter for converting alternating current to direct current.

A lighting device 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 the lower surface of the substrate; A cover portion including a cover disposed on an upper surface of the substrate, an extension portion extending from the cover in a first direction, and a coupling portion extending from the extension portion in a second direction; A body accommodating the light source unit and coupled to the cover unit; And an elastic member coupled to the coupling portion of the cover portion, wherein the coupling portion of the cover portion has a first hole and a second hole, and is disposed below the first shaft portion and the second hole. And a second torsion spring disposed thereon, and the elastic member includes a first torsion spring, a second torsion spring, and a fixing part connecting the first torsion spring and the second torsion spring, and the first torsion spring , The other end including a first spiral portion fitted into the first shaft portion of the coupling portion, one end connected to the fixing portion, and a first part supported on an outer surface of the coupling portion and a second part inserted into the first hole Including, the second torsion spring, a second spiral portion fitted to the second shaft portion of the coupling portion, one end connected to the fixing portion, and the first part supported on the outer surface of the coupling portion and the first hole The other end including the inserted second part is included, and the end of the second part passes through the first hole and is disposed adjacent to the body.

A lighting device 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 the lower surface of the substrate; A cover portion disposed on an upper surface of the substrate and a cover portion including an extension portion extending from the cover, and 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 accommodated in the space of the cover unit; An elastic member coupled to the cover portion; A reflective unit accommodated in the body and reflecting light from the light source unit; And an optical unit disposed under the reflective unit and coupled to the body, wherein the extended portion of the cover unit has an opening in which the elastic member is disposed, and the cover unit includes, among a plurality of surfaces defining the opening And a coupling portion protruding from at least one side to the opening, the elastic member is coupled to the coupling portion, the cover of the cover portion has a hole, and the first body is on an outer surface of the first body A fastening means is coupled to a fastening part of the first body and a hole of the cover, and the first body has a groove in which the fastening part is inserted on an outer circumferential surface. Have.

If the lighting device according to the embodiment is used, there is an advantage that the installation position of the elastic member is not distorted or changed.

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

In addition, 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.

In addition, there is an advantage of improving the heat dissipation efficiency.

In addition, there is an advantage of being light in weight.

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

In addition, there is an advantage of securing durability and reliability.

In addition, there is an advantage that it is difficult for the light emitted from the light source to pass through the plastic body.

In addition, it has a strong advantage against external impact.

In addition, there is an advantage of preventing the occurrence of shading due to the wire connected to the light source unit.

In addition, there is an advantage of preventing the movement of the wire connected to the light source unit.

In addition, there is an advantage of improving light efficiency.

In addition, there is an advantage of being able to withstand high voltage well.

In addition, there is an advantage of being compatible with various substrates having various sizes.

In addition, there is an advantage of preventing the movement and rotation of the substrate of the light source unit.

In addition, when the body is coupled to the cover portion, there is an advantage of being able to easily identify the coupling position of the cover portion.

In addition, when the cover portion is coupled to the body, there is an advantage of preventing movement and rotation of the cover portion.

In addition, there is an advantage that a converter for converting AC to DC is not required.

1 is a perspective view as viewed from above of a lighting device according to a first embodiment.
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 lighting device shown in FIG. 1.
4 is an exploded perspective view of the lighting device shown in FIG. 2.
5 is a cross-sectional view of the lighting device shown in FIG. 1.
6 is a cross-sectional perspective view of the lighting device shown in FIG. 1.
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 size smaller than that of the light source unit 300 illustrated in FIG. 7.
9 is a circuit pattern diagram of the light source unit 300 ′ shown in FIG. 8.
10 is a view for explaining one method of forming the substrate 310 of the heat conductive member 200 and the light source unit 300 shown in FIGS. 1 to 6.
11 is a perspective view as viewed from above of the first body 410 shown in FIG. 3.
12 is a perspective view of the first body 410 shown in FIG. 11 as viewed from below.
13 is a perspective view when the light source unit 300 and the body 400 shown in FIG. 4 are combined.
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 that the substrate 310 ′ shown in FIG. 8 is coupled to the first protrusion 414-1.
16 is a perspective view showing that the substrate 310 shown in FIG. 7 is coupled to the second protrusion 414-3.
17 is a view showing a state in which the reflective part 500 is disposed on the support part 415.
18 is a view for explaining a modified example of the guide portion 414 shown in FIG. 11.
19 is an exploded perspective view of the cover part 100 and the elastic member 700 shown in FIG. 3.
Figure 20 is a side view of the lighting device shown in Figure 1;
21 is a side view of the lighting device shown in FIG. 20 when the cover part is separated from the body.
22 is a perspective view as viewed from above of a lighting device according to a second embodiment.
23 is a perspective view of the lighting device shown in FIG. 22 as viewed from below.
FIG. 24 is an exploded perspective view of the lighting device shown in FIG. 22.
FIG. 25 is an exploded perspective view of the lighting device shown in FIG. 23.

In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. Also, the size of each component does not fully reflect the actual size.

In the description of the embodiment according to the present invention, in the case where one element is described as being formed "on or under" of another element, the upper (upper) or lower (Bottom) (on or under) includes both elements in direct contact with each other or in which one or more other elements are indirectly formed between the two elements. In addition, when expressed as “on or under”, it may include not only an upward direction but also a downward direction based on one element.

Hereinafter, a lighting device 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 device according to the first embodiment as viewed from above, FIG. 2 is a perspective view of the lighting device shown in FIG. 1 from below, and FIG. 3 is an exploded perspective view of the lighting device shown in FIG. 4 is an exploded perspective view of the lighting device shown in FIG. 2, FIG. 5 is a cross-sectional view of the lighting device shown in FIG. 1, and FIG. 6 is a cross-sectional perspective view of the lighting device shown in FIG. 1.

1 to 6, the lighting device according to the first embodiment includes a cover part 100, a heat conduction member 200, a light source part 300, a body 400, a reflection part 500, an optical part ( 600) and an elastic member 700 may be included.

The cover part 100 is coupled to the body 400. The exterior of the lighting device according to the first embodiment may 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 part 100 may be made of a heat dissipating material that is easily transferred to the outside by receiving heat from the light source part 300. For example, the cover part 100 may be a metallic material such as aluminum, aluminum alloy, magnesium, and magnesium alloy.

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

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

The cover 110 may have a plate shape 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 is exposed to the outside, and the lower surface may directly or indirectly contact the light source unit 300.

The cover 110 may include a protrusion 111. The protrusion 111 may protrude outward from the outer peripheral surface of the cover 110. One or more protrusions 111 may be disposed on the outer peripheral surface of the cover 110. 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 part 100 is coupled to the body 400, movement and rotation of the cover part 100 may be prevented.

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

The cover 110 may have a hole 115 through which fastening means S such as rivets or screws pass. The hole 115 may penetrate the upper and lower surfaces of the cover 110. The fastening means S is inserted into the hole 115 and then coupled to the fastening portion 413 of the body 400', so that the cover portion 100 and the body 400 may be coupled to each other.

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

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

The extension part 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, when the cover part 100 is coupled to the body 400, movement and rotation of the cover part 100 may be prevented.

The coupling part 150 may extend from the extension part 130 in the second direction. For example, the coupling part 150 may extend from an end of the extension part 130 in a direction different from the extension direction of the extension part 130, and may be combined with the elastic member 700. The coupling part 150 may extend in a direction perpendicular to the cover 110 or the extension part 130 from the end of the extension part 130. Accordingly, the second direction may be perpendicular to the first direction, but is not limited thereto.

Since the area of the cover part 100 is increased by the coupling part 150, the heat dissipation efficiency may be further improved. In addition, since the elastic member 700 is coupled to the cover part 100 made of a metal material having a stronger strength, not the body 400 made of a plastic material, the lighting device according to the first embodiment can secure durability and reliability. .

The light source unit 300 may be disposed under 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 may be fixed inside the lighting device according to the first embodiment by a 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, a general printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, etc. Can include.

One surface (upper surface) of the substrate 310 may contact the lower surface of the cover 110 of the cover part 100 or may indirectly contact the lower surface of the cover 110. When the upper surface of the substrate 310 indirectly contacts the lower surface of the cover 110, the heat conductive member 200 may be disposed between the substrate 310 and the cover 110.

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

One or a plurality of 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, and blue light, or a light emitting diode chip that emits ultraviolet light. Here, the light emitting diode may be a horizontal type, a vertical type, or a flip chip type, and a blue, red, yellow, or green Can emit light.

The light emitting device 330 may include a light emitting structure including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer. For example, the light emitting structure may be provided in a form in which an active layer is disposed between a first conductivity type semiconductor layer and a second conductivity type semiconductor layer.

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

In the active layer, electrons (or holes) injected through the first conductivity type semiconductor layer and holes (or electrons) injected through the second conductivity type semiconductor layer meet each other, and an energy band according to the material forming the active layer It is a layer that emits light by the difference in the band gap of. The active layer may be formed of any one of a single well structure, a multiple well structure, a quantum dot structure, or a quantum wire structure, but is not limited thereto.

The second conductivity type semiconductor layer may be implemented as a p-type semiconductor layer and may be selected from GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, AlGaInP, etc., and Mg, Zn, Ca, A p-type dopant such as Sr or Ba 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. In addition, a semiconductor layer including an n-type or p-type semiconductor layer may be further formed under the second conductivity-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 may selectively emit light from a range of a visible light band to an ultraviolet band, and may emit light having a color unique to a semiconductor material.

A lens may be disposed on the light emitting device 330. The lens is disposed to cover the light emitting element 330. Such a lens may adjust a directivity angle or a direction of light emitted from the light emitting element 330. The lens may be formed of a light-transmitting resin such as a silicone resin or an epoxy resin. The light-transmitting resin may include a wholly or partially dispersed phosphor. The shape of the lens may be, for example, a hemispherical type in cross section or a type in which a concave portion is formed in the center, 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 is Garnet-based (YAG, TAG), silicate-based, nitride-based, and oxynitride. It may include at least one or more of the system.

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

When various types of phosphors are mixed with the light-transmitting resin, the addition ratio according to the color of the phosphor may use a green phosphor rather than a red phosphor, and a yellow phosphor rather than a green phosphor. Garnet-based YAG, silicate, and oxynitride are used as yellow phosphors, silicate and oxynitride are used as green phosphors, and nitrides are used for red phosphors. have. In addition to mixing various types of phosphors in the light-transmitting resin, a layer having a red phosphor, a layer having a green phosphor, and a layer having a yellow phosphor may be formed separately.

The light source unit 300 may be an alternating current module (AC) 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 AC into DC is not required inside the lighting device according to the first embodiment.

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

7 is a perspective view of the light source unit 300 illustrated in FIG. 4, FIG. 8 is a perspective view of a light source unit 300 ′ having a size smaller than that of the light source unit 300 illustrated in FIG. 7, and FIG. 9 is It is a circuit pattern diagram of the light source unit 300'.

The substrate 310 of the light source unit 300 shown in FIG. 7 is larger in size than the substrate 310' of the light source unit 300' shown in FIG. 8. That is, the diameter is larger. In addition, the number of light-emitting elements 330 of the light source unit 300 shown in FIG. 7 is greater than the number of light-emitting elements 330 of the light source unit 300' shown in FIG. 8. Accordingly, the amount of light emitted from the light source unit 300 illustrated in FIG. 7 is greater than the amount of light emitted from the light source unit 300' illustrated in FIG. 8.

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 centers 311 and 311 ′ of the substrates 310 and 310 ′, and the input/output unit 350 is provided at the edge parts 313 and 313 ′ of the substrates 310 and 310 ′. Can be placed. The input/output unit 350 may be electrically connected to the wire w. When the input/output unit 350 is disposed on the edge portions 313 and 313' of the substrates 310 and 310', the input/output unit 350 is disposed at the centers 311 and 311' of the substrates 310 and 310'. It is possible to reduce the occurrence of shading by the wire (w) than the case. When the input/output unit 350 is disposed in the centers 311 and 311 ′ of the substrates 310 and 310 ′, the wire w should be disposed between two adjacent light emitting devices 330, in this case, two adjacent light emitting devices 330 Some of the light emitted from the device 330 may be covered by the wire w, and thus shading may occur. However, in the lighting device according to the first embodiment, since the input/output unit 350 is disposed at the edge of the substrates 310 and 310', there is an advantage of reducing the occurrence of shadows caused by the wire w.

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'.

When the light emitting elements 330 are disposed in the centers 311 and 311' of the substrates 310 and 310', and other electronic elements are disposed at the edges 313 and 313', the light emitting elements 330 emit light. The heat generated can be rapidly diffused to the edge portions 313 and 313 ′ of the substrates 310 and 310 ′, and the heat generated from the electronic elements can be quickly discharged to the outside, so that the lighting device according to the first embodiment There is an advantage in that the heat dissipation efficiency is improved.

The substrates 310 and 310 ′ may have at least one groove 315. The grooves 315 may be disposed on the edge portions 313 and 313' of the substrates 310 and 310'. The grooves 315 may have a predetermined depth from the outer circumferential surface of the substrates 310 and 310' toward the central portions 311 and 311' of the substrates 310 and 310'.

Again, referring to FIGS. 1 to 6, the heat conductive member 200 may be disposed between the cover part 100 and the light source part 300. Specifically, 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 may indirectly contact each other by the heat conduction member 200. The heat conduction member 200 may rapidly transfer heat from the light source unit 300 to the cover unit 100. Accordingly, the lighting device according to the first embodiment may have improved heat dissipation efficiency.

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

10 is a view for explaining one method of forming the substrate 310 of the heat conductive member 200 and 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. When the substrate 310 includes the FR-4 layer 317, there is an advantage in that the insulating performance is further improved than when the substrate 310 is a metal PCB.

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

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 upper 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. The upper surface of the adhesive layer 319 may contact the lower surface of the FR-4 layer 317 and the lower surface may contact the upper surface of the cover 110.

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

The thickness of the adhesive layer 319 may be 40um or more and 60um or less. If the thickness of the adhesive layer 319 is larger than 60um, there is a problem that the heat dissipation performance is deteriorated because the thickness of the adhesive layer 319 is too thick, and if the thickness of the adhesive layer 319 is less than 40um, the thickness of the adhesive layer 319 is too thin to cover There is a problem in that the adhesion between the cover 110 and the FR-4 layer 317 is reduced due to a decrease in the adhesion between the (110) and the FR-4 layer 317. Here, it is preferable that the thickness of the adhesive layer 319 is 50um.

The adhesive layer 319 may be disposed between the cover 110 and the FR-4 layer 317 and then more firmly adhered to the cover 110 and the FR-4 layer 317 through a thermal bonding process. When the adhesive layer 319 undergoes a thermal bonding process, since the cover 110 and the adhesive layer 319 and the FR-4 layer 317 and the adhesive layer 319 are in more firm contact, heat dissipation of the lighting device according to the first embodiment The performance can be further improved. In addition, 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 than when thermal bonding is not performed. Accordingly, there is an advantage in that the amount of the material of the FR-4 constituting the FR-4 layer 317 can be reduced, thereby reducing the manufacturing cost.

Meanwhile, the cover 110 may include a plurality of pins 119. The plurality of pins 119 may protrude out from the outer surface of the cover 110. The plurality of fins 119 may increase the surface area of the cover 110 to improve heat dissipation efficiency of the lighting device 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 toward the center, as illustrated, but is not limited thereto.

Again, referring to FIGS. 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 reflective unit 500 therein. Can be stored.

Unlike the cover part 100 made of a metal material, the body 400 may be made of a plastic material. For example, the body 400 may be polycarbonate (PC). When the body 400 is made of a plastic material, the weight is lighter than that of the case where the body 400 is made of a metal material, and 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 are not limited thereto, and the first body 410, the second body 430 and the The third bodies 450 may be manufactured separately and combined with each other.

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

The first body 410 may be coupled to each other by a fastening means (S) such as rivets or screws with the cover 110 of the cover portion 100, as shown in FIG. 6. The fastening means (S) penetrates the hole 115 of the cover 110 shown in FIG. 3 and is inserted into the fastening part 413 of the first body 410, so that the first body 410 and the cover 110 Can be combined. The coupling method of the first body 410 and the cover 110 is not limited thereto, and may be coupled by another structure such as a hook structure.

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

FIG. 11 is a perspective view of the first body 410 shown in FIG. 3 from above, FIG. 12 is a perspective view of the first body 410 shown in FIG. 11 from below, and FIG. 13 is a light source unit shown in FIG. 4 It is a perspective view when the 300 and the body 400 are combined.

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 an oval or polygonal shape.

The first body 410 may have a multi-wall structure, as also shown in FIG. 5. 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 light from the plurality of light emitting elements 330 passes, and the outer wall 411b is disposed to surround the inner wall 411a, and the inner wall 411a and the outer wall 411b Are arranged to be spaced apart from each other at a predetermined interval. A predetermined space 411c may be formed between the outer wall 411b and the inner wall 411a. When the first body 410 made of plastic includes the inner wall 411a and the outer wall 411b, there is an advantage that it is difficult for light emitted from the light source unit 300 to pass through the first body 410. In addition, there is an advantage in that the weight of the first body 410 can be further reduced than when the first body 410 has a single-walled structure, thereby reducing material cost.

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 is exposed to the inner surface facing the inner wall 411a and the outside. It may include an outer surface.

The thickness 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 1 T, the light emitted from the light source unit 300 can easily pass through the inner wall 411a and the outer wall 411b, and processing is difficult. If the thickness of the 411a and the outer wall 411b is greater than 2T, it is difficult to secure a space between the inner wall 411a and the outer wall 411b. It is preferable that each of the inner wall 411a and the outer wall 411b has a thickness of 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 may pass through the outer wall 411b, and if it is greater than 12T, the first body 410 There is a problem that the strength of) weakens. For example, the interval between the inner wall 411a and the outer wall 411b may be formed to 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 illustrated in FIG. 12 may connect the inner wall 411a and the outer wall 411b to each other. The lower wall 411d of the first body 410 may stably fix 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 may define the predetermined space 411c.

The lower wall 411d may have a fastening hole 411d-1 in which the connection part 630 of the optical part 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 may be coupled to each other.

The outer wall 411b may include a locking projection 412. The locking projection 412 may be disposed on the inner surface of the outer wall 411b. The locking projection 412 may be coupled to the connection portion 630 of the optical unit 600. The hook formed on the upper end of the connection part 630 may be caught and fixed by the locking protrusion 412. Here, although not shown in the drawing, the locking projection 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 may maintain a constant gap between the inner wall 411a and the outer wall 411b, and may protect the first body 410 from external impact.

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

The inner wall 411a may define an opening 400h. For example, the inner surface of the inner wall 411a may define the opening 400h. Light emitted from the light source unit 300 may be emitted outside the lighting device according to the first embodiment through the opening 400h.

The outer wall 411b may have a first guide groove 411b-1 and a second guide groove 411b-3, as shown in FIG. 3. The first guide groove 411b-1 and the second guide groove 411b-3 may 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 extension part 130. When the first guide groove 411b-1 and the second guide groove 411b-3 are coupled to the cover portion 100, the first body 410 easily identifies the coupling position of the cover portion 100 Can provide convenience on the manufacturing process.

The outer wall 411b may have a third guide groove 411b-5, as shown in FIG. 3. The third guide groove 411b-5 may be formed to have a predetermined depth on 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 formed smaller than the thickness of the wire w. When 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, thereby preventing the movement of the wire w. Can be prevented. For example, when the wire (w) includes a conductor wire and a covering portion surrounding the conductor wire, the width of the third guide groove (411b-5) is smaller than the thickness of the wire (w), It can be larger than the thickness of the conductor wire. In this case, since the covering portion of the wire w is fitted into the third guide groove 411b-5, the movement of the wire w may be restricted.

Since the first guide groove 411b-1 is disposed on the third guide groove 411b-5, after the wire w is fitted into the third guide groove 411b-5, the first guide groove 411b-1 ), since the protrusion 111 of the cover 110 blocks the third guide groove 411b-5, the wire w can be stably fixed to the third guide groove 411b-5.

The third guide groove 411b-5 may correspond to the number of wires w. That is, if there are a plurality of wires w, there may be a plurality of third guide grooves 411b-5. This will be described with reference to FIG. 14.

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 each of 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 formed smaller than the thickness of the wires w1 and w2. When the width of the third guide groove 411b-5 is smaller than the thickness of the wires w1 and w2, movement of the wires w1 and w2 can be prevented.

Again, referring to FIGS. 11 to 13, the first body 410 may include a guide part 414. The guide part 414 may extend from the inner surface of the inner wall 411a to the opening 400h. Here, the guide part 414 may be disposed not only on the first body 410 formed of a double wall, but also on the inner surface of the first body formed of a single wall.

The guide portion 414 is disposed under the edge portion 313 of the substrate 310 shown in FIG. 7 so that the substrate 310 does not come out through the opening 400h, as shown in FIGS. 6 and 13. The substrate 310 may be supported.

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

As shown in FIG. 6, the guide part 414 supports the substrate 310, and the fastening means S penetrates the hole 115 of the cover 110 shown in FIG. 3, and the fastening part 413 Because it is fastened to, the lighting device according to the first embodiment has the advantage of being able to withstand high voltage well. Specifically, in the conventional lighting device, the substrate of the light source unit is directly coupled to the radiator by fastening means such as screws. In this way, when the substrate is directly coupled to the radiator by means of a screw, a short-circuit phenomenon occurs when a high voltage is applied to a conventional lighting device, thereby damaging the light source. However, in the lighting apparatus according to the first embodiment, since the guide portion 414 supports the substrate 310 and the inner side surface of the inner wall 411a protects the side surface of the substrate 310, the substrate 310 is There is no need for a separate fastening means for fixing to the cover 110. Therefore, the lighting device according to the first embodiment has an advantage that a short-circuit 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 4KV or higher.

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 part 414. The protrusions 414-1 and 414-3 may protrude upward from the upper surface of the guide part 414. The protrusions 414-1 and 414-3 may be coupled to the grooves 315 of the substrates 310 and 310' shown in FIGS. 7 to 8. The protrusions 414-1 and 414-3 may be coupled to the grooves 315 of the substrates 310 and 310' to prevent movement and rotation of the substrates 310 and 310'.

The protrusions 414-1 and 414-3 are plural, and may include a first protrusion 414-1 and a second protrusion 414-3. The first protrusion 414-1 may be disposed farther from the inner wall 411a than the second protrusion 414-3. Also, the second protrusion 414-3 may be disposed between the first protrusion 414-1 and the inner wall 411a.

By the first protrusion 414-1 and the second protrusion 414-3, the lighting device according to the first embodiment may be compatible with various substrates having various sizes. Specifically, it will be described with reference to FIGS. 15 to 16.

FIG. 15 is a perspective view showing that the substrate 310 ′ shown in FIG. 8 is coupled to the first protrusion 414-1, and FIG. 16 is a view showing the substrate 310 shown in FIG. 7 being a second protrusion 414-3. ) Is a perspective view showing the combination.

Referring to FIG. 15, a first protrusion 414-1 is disposed in a groove 315 of a substrate 310 ′ shown in FIG. 8. Referring to FIG. 16, the substrate 310 shown in FIG. 7 A second protrusion 414-3 may be disposed in the groove 315.

Here, the height of the second protrusion 414-3 based on the upper surface of the guide part 414 may be formed 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 portion of the substrate 310 shown in FIG. 7 may be disposed on the first protrusion 414-1, and , The groove 315 of the substrate 310 may be coupled to the second protrusion 414-3.

Meanwhile, the heights of the second protrusion 414-3 and the first protrusion 414-1 may be the same. In this case, the groove 315 of the first substrate 310 illustrated in FIG. 7 may have a shape capable of accommodating the first protrusion 414-1 and the second protrusion 414-3 together.

The lighting device according to the first embodiment including the first protrusion 414-1 and the second protrusion 414-3 includes the substrate 310 illustrated in FIG. 7 and the substrate illustrated in FIG. 8 having different sizes. (310') can be optionally used. Accordingly, the lighting apparatus according to the first embodiment has an advantage that it is not necessary to manufacture the body 400 corresponding to each light amount of the light source unit 300 or each substrate.

On the other hand, the guide part 414 of the first body 410 does not have the first protrusion 414-1 and the second protrusion 414-3, and the substrate 310 shown in FIG. 7 having different sizes and The substrate 310 ′ shown in FIG. 8 may be selectively used. With reference to FIG. 18, it will be described in detail.

18 is a view for explaining a modified example of the guide portion 414 shown in FIG. 11.

Referring to FIG. 18, the guide portion 414 ′ protruding from the inner surface of the inner wall 411a may selectively guide the substrate 310 ′ illustrated in FIG. 7 and the substrate 310 ′ illustrated 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 a first surface 414'-1 supporting the substrate 310' shown in FIG. 8 and a second surface 414 supporting the substrate 310 shown in FIG. 7 '-2) may be included. The first surface 414'-1 and the second surface 414'-2 are not 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. Accordingly, 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 part 414 ′, the edge portion of the substrate 310 ′ is disposed on the first surface 414 ′-1, and the stepped surface 414 ′- 3) Since this guides the substrate 310', the substrate 310' can be stably fixed to the first body 410.

Meanwhile, 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 wall 411a is Since the side surface guides the substrate 310, the substrate 310 can be stably fixed to the first body 410.

As shown in FIG. 18, the first surface 414'-1, the second surface 414'-2, and the stepped surface 414'-3, and the guide portion 414' have different sizes. The substrate 310 shown in and the substrate 310' shown in FIG. 8 may be selectively used.

In FIG. 18, the side surface of the substrate 310 and the side surface of the substrate 310' are spaced apart from the inner side surface of the inner wall 411a by a predetermined distance, which is a design that may appear when the lighting device according to the embodiment is actually manufactured. It is an error in the image. There may be no errors in the design. That is, the side surface of the substrate 310 and the side surface of the substrate 310' may contact the inner side surface of the inner wall 411a.

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

The reflective part 500 shown in FIGS. 3 to 4 may be disposed on the support part 415. A state in which the reflective part 500 is disposed on the support part 415 is shown in FIG. 17.

As shown in FIG. 17, the support part 415 may support the reflective part 500 on the light source part 300. To this end, the support part 415 may include a support surface for supporting the reflective part 500 as shown in FIGS. 11 to 13. The support 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 reflector 500.

Again, referring to FIGS. 11 to 13, the first body 410 may include a cover part 416. The cover part 416 may protrude from the inner surface of the inner wall 411a to the opening 400h. Here, in the drawing, the cover part 416 is shown to be disposed on the inner side of the inner wall 411a of the first body 410 composed of a double wall, but the cover part 416 is of the first body composed of a single wall. It may be disposed on the inner side. That is, it should be noted that when the first body 410 has a single wall structure including an inner side and an outer side, the cover portion 416 may be disposed on the inner side of the first body 410.

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

The cover portion 416 may be disposed on the edge portions 313 and 313' of the light source portions 300 and 300' shown in FIGS. 7 to 8.

The cover part 416, as shown in FIG. 13, is disposed on the input/output unit 350 of the light source units 300 and 300' shown in FIGS. 7 to 8 to provide the input/output unit 350 and the wire w Covers. When light is emitted from the light emitting element 330 of the light source unit 300, the cover unit 416 may prevent the occurrence of shadow by the wire w connected to the input/output unit 350. That is, if there is no cover part 416, shadows by wires w may appear on the diffusion plate 610 of the optical part 600, but since the cover part 416 is present, the occurrence of shadows can be prevented in advance. There is. Accordingly, the lighting device according to the first embodiment including the cover portion 416 has an advantage of preventing the occurrence of shadows caused by wires and improving light efficiency.

The cover part 416 may support the reflective part 500 together with the support part 415. To this end, the cover part 416 may include a support surface that supports the reflective part 500.

The support surface may have a shape corresponding to the reflective part 500. For example, when the outer surface of the reflector 500 is flat, the support surface may be flat corresponding thereto. In addition, when the outer surface of the reflector 500 is bent, the support surface may be bent correspondingly.

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

Again, referring to FIGS. 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. I can.

The second body 430 may have a cylindrical shape.

As shown in FIG. 5, the second body 430 may extend from the lower wall 411d of the first body 410 in a direction in which the diameter thereof increases.

The second body 430 may include an outer surface and an inner surface. The outer surface is exposed to the outside, and the inner surface may include unevenness 435 for diffusing or scattering light emitted from the diffusion plate 610 of the optical unit 600.

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

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

The reflective part 500 is disposed under the light source part 300.

The reflector 500 may be disposed inside the body 400. For example, the reflective part 500 may be disposed in the opening 400h of the body 400.

The reflective part 500 is supported by the support part 415 and the cover part 416 of the first body 410, and by the combination of the optical part 600 and the body 400, the inside of the body 400 Can be fixed.

The reflecting part 500 may include an inner surface that reflects light from the plurality of light emitting devices 330 and an outer surface disposed on the cover part 416 and the support part 415.

The reflector 500 may reflect light emitted from the light emitting device 330 to the diffuser plate 610, and reflect light returned from the diffuser plate 610 to the diffuser plate 610 again.

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

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

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

The optical part 600 may be combined with the body 400 and disposed under the reflective part 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 with the body 400.

The diffusion plate 610 may include a diffusion agent therein to diffuse incident light. The diffusion plate 610 may have a convex downward shape to facilitate diffusion of incident light.

The connection part 630 may protrude upward from the edge of the diffusion plate 610. The connection part 630 may be coupled to the fastening hole 411d-1 of the body 400. The connection part 630 may be inserted into the fastening hole 411d-1.

The connection part 630 may have a hook at the upper end. After the hook of the connection part 630 passes through the fastening hole 411d-1 of the body 400, it may be coupled with the locking projection 412 of the body 400. Since the hook of the connection part 630 is caught on the upper surface of the locking projection 412, the optical part 600 and the body 400 can be firmly coupled to each other.

The number of connection parts 630 may be one or more, and the number of connection parts 630 may correspond to the number of fastening holes 411d-1 of the body 400.

The elastic member 700 is coupled to the cover portion 100. The elastic member 700 may be coupled to the coupling portion 150 of the cover portion 100.

The elastic member 700 presses the upper surface of the ceiling on which the lighting device 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 has an elastic force acting toward the third body 450, the lighting device according to the first embodiment may 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 portion 100 and the elastic member 700 shown in FIG. 3.

Referring to FIG. 19, the elastic member 700 may include a first torsion spring 710, a second torsion spring 730, and a fixing part 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 a single wire rolled in a spiral direction. The first spiral portion 711 may be fitted into the first shaft portion 151-1 of the coupling portion 150 of the cover portion 100.

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 portion 715 is connected to the first spiral portion 711 and the first part 715-1 disposed on the outer surface of the coupling part 150, and the first part 715-1 at the end of the first part 715-1. A second part 715-2 extending in a direction different from the length direction of the part 715-1 and coupled to the first hole 153-1 of the coupling part 150 may be included. The length of the second part 715-2 is greater than the thickness of the coupling 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. Can be arranged. 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, one end portion 733 and the other end portion 735 of the second spiral portion 731.

The second spiral portion 731 may be a single wire wound in a spiral direction. The second spiral portion 731 may be fitted into the second shaft portion 151-2 of the coupling portion 150 of the cover portion 100.

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 integrated.

The other end portion 735 is connected to the second spiral portion 731 and the first part 735-1 disposed on the outer surface of the coupling part 150, and the first part 735-1 at the end of the first part 735-1. A second part 735-2 extending in a direction different from the length direction of the part 735-1 and coupled to the second hole 153-2 of the coupling part 150 may be included. The second part 735-2 has a length that is thicker than the thickness of the coupling part 150, and the end of the second part 735-2 passes through the second hole 153-2 to the body 400. Can be arranged adjacent. Here, the length direction of the second part 735-2 may be perpendicular to the length direction of the first part 735-1, but is not limited thereto.

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

The fixing unit 750 may press the upper surface of the ceiling on which the lighting device according to the first embodiment is installed, and fix the lighting device according to the first embodiment to the ceiling.

The fixing part 750 may have a'U' shape. However, the present invention is not limited thereto, and includes any shape that can press the ceiling.

Meanwhile, the coupling unit 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 coupling portion 150 and is coupled to the first spiral portion 711 of the first torsion spring 710. By the first shaft portion 151-1, the first spiral portion 711 may be coupled to the coupling portion 150 and rotate with the first shaft portion 151-1 as a rotation axis.

The second shaft portion 151-2 is disposed at the lower end of the coupling portion 150 and is coupled with the second spiral portion 731 of the second torsion spring 730. By the second shaft part 151-2, the second spiral part 731 may be coupled to the coupling part 150, and may rotate using the second shaft part 151-2 as a rotation axis.

An end of the first shaft portion 151-1 and an end of the second shaft portion 151-2 may be disposed to face each other. When the ends of the first shaft part 151-1 and the ends of the second shaft part 151-2 are arranged to face each other, the first torsion spring 710 and the second torsion spring 730 may be formed of the first shaft part 151-1 1) After being coupled to the second shaft portion (151-2), there is an advantage that it is difficult to come off.

The first hole 153-1 may be disposed on the first shaft part 151-1, and the second hole 153-2 may be disposed on the second shaft part 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. Can be.

With reference to FIGS. 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 device shown in FIG. 1, and FIG. 21 is a side view when the cover part of the lighting device 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 coupling part 150 of the cover part 100, and the second part Since the 715-2 is inserted into the first hole 153-1 of the coupling portion 150 of the cover portion 100, there is an advantage that the tensile force of the elastic member 700 can be reinforced, and the elastic member ( Installation of the elastic member 700 because it is difficult for the second part 715-2 of the elastic member 700 to come out from the first hole 153-1 of the coupling part 150 even when a very strong tensile force is applied to the 700). It has the advantage of not being distorted or changed.

Referring to FIGS. 19 and 21, when the cover part 100 is separated from the body 400, the first spiral part 711 of the elastic member 700 becomes the first shaft part 151-1 of the connection part 150. Is rotated about the axis, but because the other end 715 of the elastic member 700 is caught in the first hole 153-1 of the coupling portion 150 of the cover unit 100, the other end of the elastic member 700 There is an advantage that the end 715 does not come out of the first hole 153-1 of the coupling part 150 of the cover part 100.

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

22 to 25, the lighting device according to the second embodiment includes a cover part 100 ′, a heat conduction member 200, a light source part 300, a body 400 ′, a reflective part 500, and an optical device. It may include a portion 600 and an elastic member 700'. Here, the heat conduction member 200, the light source unit 300, the reflective unit 500, and the optical unit 600 are the heat conduction member 200 and the light source unit of the lighting apparatus according to the first embodiment shown in FIGS. 300), since the reflective unit 500 and the optical unit 600 are the same, a description thereof will be omitted.

The cover unit 100 ′ may accommodate the light source unit 300 therein and may 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 coupling 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 ′ is exposed to the outside, and the lower surface may directly or indirectly contact the light source unit 300.

The cover 110 ′ may have a hole 115 through which fastening means S such as rivets or screws pass. The hole 115 may penetrate the upper and lower surfaces of the cover 110 ′. The fastening means S is inserted into the hole 115 and then coupled to the fastening portion 413' of the body 400', so that the cover portion 100' and the body 400' may be coupled to each other.

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

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

The shape of the extension part 130' may be a cylindrical shape. Accordingly, the extension part 130 ′ may have a space 170 ′ capable of accommodating the light source unit 300 and a part of the body 400 ′ by being combined with the cover 110 ′.

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

The coupling part 150 ′ may be coupled with the elastic member 700 ′ to stably fix the elastic member 700 ′ to the cover part 100 ′.

The coupling part 150 ′ may protrude from at least one surface of the plurality of surfaces defining the opening 135 ′ of the extension part 130 ′ to the opening 135 ′.

The coupling portion 150 ′ may be one, or, as shown in the drawing, may extend on two surfaces facing each other among a plurality of surfaces defining the opening 135 ′ and may be disposed to face each other.

Since the area of the cover part 100 ′ is widened by the coupling part 150 ′, the heat dissipation efficiency may be further improved. In addition, since the elastic member 700 ′ is coupled to the cover part 100 ′ made of a metal material rather than the body 400 ′ made of a plastic material, the lighting device according to the second embodiment can secure durability and reliability.

The body 400 ′ may be combined with the cover part 100 ′, the light source part 300 and the optical part 600, and may accommodate the reflective part 500 therein.

The body 400' may be made of a plastic material, unlike the cover part 100' made of a metal material. For example, the body 400 ′ may be polycarbonate (PC). When the body 400 ′ is made of a plastic material, the body 400 ′ is lighter in weight than when the body 400 ′ is made of a metal material, and manufacturing cost may 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 are not limited thereto, and the first body 410 ′ and the second body Each of the 430 ′ and the third body 450 ′ may be separately manufactured and combined with each other.

The first body 410 ′ is disposed under the light source unit 300 and may be combined with the cover unit 100 ′ and the light source unit 300.

The first body 410 ′ may be coupled to each other by a fastening means S such as rivets or screws with the cover 110 ′ of the cover part 100 ′. The fastening means (S) penetrates the hole 115 of the cover 110 ′ and is inserted into the fastening part 413 ′ of the first body 410 ′, 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 inside the space 170' inside the cover part 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 part 413'. The fastening part 413 ′ may be disposed on the outer surface of the first body 410 ′.

The fastening part 413 ′ may be coupled to the groove 315 of the substrate 310. The fastening part 413 ′ may be plural corresponding to the number of grooves 315 of the substrate 310.

The bonding position of the substrate 310 and the first body 410 ′ can be easily checked by the fastening part 413 ′.

Since the first body 410 ′ supports the substrate 310 and the fastening means S penetrates the hole 115 of the cover 110 ′ and is fastened to the fastening part 413 ′, the second embodiment According to the lighting device has the advantage of being able to withstand high voltage well. Specifically, in the conventional lighting device, the substrate of the light source unit is directly coupled to the radiator by fastening means such as screws. In this way, when the substrate is directly coupled to the radiator by means of a screw, a short-circuit phenomenon occurs when a high voltage is applied to a conventional lighting device, thereby damaging the light source. However, in the lighting device according to the second embodiment, the first body 410 ′ supports the substrate 310, and the cover part 100 ′ and the first body 410 ′ are coupled to each other to provide the substrate 310. Because this is fixed, there is no need for a separate fastening means for fixing the substrate 310 to the cover 110. Accordingly, the lighting device according to the second embodiment has an advantage that a short-circuit 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 ′ may be coupled to the connection part 630 of the optical part 600.

The second body 430 ′ may be disposed under the first body 410 ′ and may 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 ′ is disposed below the second body 430 ′ and may extend from the second body 430 ′.

The elastic member 700' is coupled to the cover portion 100'. . The elastic member 700' may be coupled to the coupling portion 150' of the cover portion 100'.

The elastic member 700' presses the upper surface of the ceiling on which the lighting 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 ′ has an elastic force acting toward the third body 450 ′, the lighting device according to the second embodiment may 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 a single wire wound in a spiral direction.

The spiral portion 710' may be fitted and coupled to the coupling portion 150' of the cover portion 100'. The spiral portion 710' may rotate about the coupling portion 150' of the cover portion 100' as an axis.

The fixing portion 750' may be connected to each other by extending both ends of the spiral portion 710'.

The fixing part 750 ′ may press the upper surface of the ceiling on which the lighting device according to the second embodiment is installed, and fix the lighting device according to the second embodiment to the ceiling.

The fixing part 750' may have a'U' shape. However, the present invention is not limited thereto, and includes any shape that can press the ceiling.

The embodiments have been described above, but these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention belongs are not illustrated above within the scope not departing from the essential characteristics of the present embodiment. It will be seen that various modifications and applications are possible. For example, each constituent element specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

100: cover
200: heat conduction member
300: light source unit
400: body
500: reflector
600: optical unit
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 devices disposed on the lower surface of the substrate;
A cover portion including a cover disposed on an upper surface of the substrate, an extension portion extending from the cover in a first direction, and a coupling portion extending from the extension portion in a second direction;
A body accommodating the light source unit and coupled to the cover unit; And
Includes; an elastic member coupled to the coupling portion of the cover part,
The coupling part of the cover part has a first hole and a second hole, and includes a first shaft part disposed below the first hole and a second shaft part disposed below the second hole,
The elastic member includes a first torsion spring, a second torsion spring, and a fixing portion connecting the first torsion spring and the second torsion spring,
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 fixing portion, a first part supported on the outer surface of the coupling portion, and a second inserted into the first hole. Including the other end including the part,
The second torsion spring may include a second spiral portion fitted to the second shaft portion of the coupling portion, an end portion connected to the fixing portion, a first part supported on an outer surface of the coupling portion, and a second inserted into the first hole. Including the other end including the part,
An end portion of the second part passes through the first hole and is disposed adjacent to the body. delete delete The method of claim 1,
The ends of the first shaft and the ends of the second shaft are arranged to face each other,
The first direction of the extension part and the second direction of the coupling part are vertical,
The cover part is made of metal, and the body is made of plastic. delete delete A light source unit including a substrate including an upper surface and a lower surface and a plurality of light emitting devices disposed on the lower surface of the substrate;
A cover portion disposed on an upper surface of the substrate and a cover portion including an extension portion extending from the cover, and 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 accommodated in the space of the cover unit;
An elastic member coupled to the cover portion;
A reflective unit accommodated in the body and reflecting light from the light source unit; And
Including; an optical unit disposed under the reflective unit and coupled to the body,
The extended portion of the cover part has an opening in which the elastic member is disposed,
The cover part includes a coupling part protruding from at least one surface of a plurality of surfaces defining the opening to the opening,
The elastic member is coupled to the coupling portion,
The cover of the cover part has a hole,
The first body includes a fastening portion disposed on an outer surface of the first body,
The first body supports the substrate,
A fastening means is coupled to the hole of the cover and the fastening part of the first body,
The substrate, the lighting device having a groove in the outer circumferential surface into which the fastening portion is inserted. The method of claim 7,
The elastic member includes a spiral portion fitted to the coupling portion, and a fixing portion having both ends of the spiral portion connected to each other,
The coupling portion extends from two surfaces facing each other among the plurality of surfaces, and is disposed to face each other,
The cover part is made of metal, and the body is made of plastic. The method of claim 7, wherein the body,
A second body extending from below the first body, having a larger diameter than the first body, and diffusing or scattering light emitted from the optical unit; And
Containing, a third body extending from below the second body and having a larger diameter than the second body. delete

Images