KR101315703B1 - Lighting device - Google Patents

Abstract

An embodiment relates to a lighting device.
In one embodiment, a lighting apparatus includes: a light emitting module having a substrate and a light emitting device disposed on the substrate; A first body disposed under the substrate of the light emitting module; A case disposed under the first body; A driving unit disposed in the case and electrically connected to the light emitting module; And a second body coupled to the first body, wherein the second body has one or more perforations, and a flow path between the case and the second body such that heat generated by the driving unit is discharged through the perforations. Is formed, the first body has one surface having a seating groove in which the light emitting module is disposed, and a side portion extending downward from the one surface, and the second body has a side portion of the first body disposed thereon. It has a stepped portion.

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 .

KR 10-1080700 B1 JP 2008-204671 A

The embodiment provides a lighting device that can improve heat dissipation efficiency.

In addition, the embodiment provides a lighting device that can quickly remove the heat emitted from the driving unit.

In addition, the embodiment provides a lighting device that can reduce the weight and material costs.

In one embodiment, a lighting apparatus includes: a light emitting module having a substrate and a light emitting device disposed on the substrate; A first body disposed under the substrate of the light emitting module; A case disposed under the first body; A driving unit disposed in the case and electrically connected to the light emitting module; And a second body coupled to the first body, wherein the second body has one or more perforations, and a flow path between the case and the second body such that heat generated by the driving unit is discharged through the perforations. Is formed, the first body has one surface having a seating groove in which the light emitting module is disposed, and a side portion extending downward from the one surface, and the second body has a side portion of the first body disposed thereon. It has a stepped portion.

Illumination apparatus according to the embodiment, the light emitting module; A driver supplying a power signal to the light emitting module; A case accommodating the driving unit; A body that receives heat from the light emitting module to radiate heat and has one or more perforations; A cover disposed on the body, the cover including a top having a curved surface and a bottom having an opening; And a member disposed between the body and the cover, the member coupled to the body and the cover and reflecting light from the cover, wherein the body surrounds the case, and the perforation exposes the case. The member has a hole through which the light emitting module is exposed and a groove into which a portion of the lower part of the cover is inserted.

Using the lighting apparatus according to the embodiment, there is an advantage that can improve the heat radiation efficiency.

In addition, there is an advantage that can quickly remove the heat emitted from the drive unit.

In addition, there is an advantage to reduce the weight and material costs.

1 is a perspective view of a lighting apparatus according to an embodiment;
2 is a perspective view of the lighting apparatus shown in FIG. 1 viewed from another angle;
3 is an exploded perspective view of the lighting apparatus shown in FIG.
4 is an exploded perspective view of the lighting device shown in FIG. 3 viewed from another angle;
5 is a sectional perspective view of the lighting apparatus shown in FIG. 1, FIG.
6 is a cross-sectional perspective view of the lighting device shown in FIG. 5 viewed from another angle.

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

In the description of embodiments according to the present invention, it is to be understood that where an element is described as being formed "on or under" another element, On or under includes both the two elements being directly in direct contact with each other or one or more other elements being 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 will be described with reference to the accompanying drawings.

1 is a perspective view of a lighting apparatus according to an embodiment, FIG. 2 is a perspective view of the lighting apparatus illustrated in FIG. 1 from another angle, FIG. 3 is an exploded perspective view of the lighting apparatus illustrated in FIG. 3 is an exploded perspective view of the lighting device shown in FIG. 3, FIG. 5 is a cross-sectional perspective 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. 5 from another angle.

1 to 6, the lighting apparatus according to the embodiment includes a cover 100, a light emitting module 200, a member 300, a body 400, 500, a case 600, a holder 700, and a driving unit. 800 and socket 900.

The cover 100 is disposed on the light emitting module 200 and is coupled to the member 300. The cover 100 protects the light emitting module 200.

The cover 100 may have a hollow hemispherical shape or a bulb shape.

The cover 100 has an outer surface and an inner surface, and the inner surface may be coated with a milky paint. Here, the paint may include a diffusing material to diffuse light from the light emitting module 200.

The material of the cover 100 may be glass. However, since glass has a weak problem in weight or external impact, it is better to use plastic, polypropylene (PP), polyethylene (PE), and the like rather than glass. Here, polycarbonate (PC) or the like having good light resistance, heat resistance, and impact strength characteristics may be used.

The surface roughness of the inner surface of the cover 100 may be greater than the surface roughness of the outer surface of the cover 100. If the surface roughness of the inner surface of the cover 100 is larger than the surface roughness of the outer surface of the cover 100, the light from the light emitting module 200 is sufficiently scattered and diffused.

The cover 100 may be manufactured through blow molding to widen the direct angle of light from the light emitting module 200.

The cover 100 and the member 300 are combined. Coupling of the cover 100 and the member 300 may be possible by inserting an end portion of the cover 100 into the groove 350 of the member 300.

The light emitting module 200 includes a substrate 210 and a light emitting device 230 disposed on the substrate.

The substrate 210 has a rectangular plate shape. Here, the substrate 210 is not limited to the rectangular plate shape. For example, the substrate 210 may be a disc, an ellipse, and a polygonal plate.

The substrate 210 is disposed on the first body 400. The substrate 210 may be disposed on one surface 410 of the first body 400.

In addition, the substrate 210 is disposed in the opening 330 of the member 300. Therefore, the substrate 210 and the member 300 are disposed together on one surface 410 of the first body 400.

The substrate 210 may have a fastening hole 215. A fastening means such as a screw is inserted into the fastening hole 215 and the fastening hole 415 of the first body 400. The substrate 210 may be firmly coupled to the first body 400 through the fastening means.

The substrate 210 may be a circuit pattern printed on an insulator, and for example, a general printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, or the like may be used. It may include. Here, the substrate 210 may be a Chips On Board (COB) type that can directly bond an LED chip that is not packaged on a printed circuit board. Since the COB type includes a ceramic material, heat resistance to heat and insulation to electricity are good.

The surface of the substrate 210 may be coated with a material that efficiently reflects light or a color that efficiently reflects light, for example, a white and a silver material.

The light emitting devices 230 may be disposed on the substrate 210.

The light emitting device 230 may be a light emitting diode chip emitting light of blue, red, or green, or a light emitting diode chip emitting UV. In addition, the light emitting device 230 may be a light emitting diode, and may be a horizontal type or a vertical type.

The light emitting device 230 may have a resin part covering the light emitting diode. The resin part may be a hemisphere type and may be filled with a translucent resin such as a silicone resin or an epoxy resin as a whole without void space. The light transmitting resin may include a phosphor dispersed wholly or partially. Here, when the light emitting device 230 is a blue light emitting diode, the phosphor is at least one of Garnet (YAG, TAG), Silicate, Nitride, and Oxynitride. It may include any one or more. In addition, the phosphor may further include not only a yellow phosphor but also a green phosphor or a red phosphor to improve the color rendering index. When various kinds of phosphors are mixed in the light-transmissive resin, the addition ratio according to the color of the phosphor may use more green phosphors than red phosphors and more yellow phosphors than green phosphors.

The resin portion may have a lens function for adjusting the direction of the light or the direction of light emitted from the light emitting element 230.

The member 300 is disposed on the first body 400, the light emitting module 200 is disposed, and is coupled to the cover 100. In addition, the member 300 is accommodated in the second body 500.

The member 300 is disk shaped. However, the present invention is not limited thereto and may have various shapes.

The member 300 may have one surface 310 on which the light emitting module 200 is disposed. An opening 330 in which the substrate 210 of the light emitting module 200 is disposed may be formed on one surface 310. In addition, a groove 350 into which the end of the cover 100 is inserted may be formed in one surface 310, and a through hole 313 through which an electric wire of the driving unit 800 passes, may be formed. Here, the groove 350 is disposed on the outer circumference of the one surface 310. The groove 350 corresponds to the shape of the end of the cover 100.

One surface 310 of the member 300 may have a material or color for reflecting light from the light emitting module 200.

The member 300 may be accommodated in the second body 500. Specifically, the member 300 may be disposed to block the upper opening of the second body 500. That is, the upper portion of the second body 500 surrounds the member 300.

The member 300 may be a material having thermal conductivity. The member 300 may transfer heat from the light emitting module 200 to the first body 400.

The bodies 400 and 500 allow the heat generated from the light emitting module 200 and the driver 800 to be effectively released. Such a body may include a first body 400 and a second body 500. Hereinafter, the first body 400 and the second body 500 will be described in detail.

The light emitting module 200 and the member 300 are disposed on the first body 400. Specifically, the first body 400 has one surface 410, the substrate 210 of the light emitting module 200 is disposed on the central portion of the one surface 410, the central portion of the one surface 410 The member 300 is disposed at the remaining portion except for the above. Here, the one surface 410 may have a fastening hole 415. A fastening means inserted into the fastening hole 215 of the substrate 210 of the light emitting module 200 is inserted into the fastening hole 415. In addition, one surface 410 may have a seating groove 430. The substrate 210 of the light emitting module 200 may be inserted into the mounting groove 430. In addition, one surface 410 may have a through hole 413 through which an electric wire of the driving unit 800 passes.

The first body 400 has a side portion 450. The side portion 450 extends downward from the outside of the one surface 410. The side portion 450 is coupled to the upper end portion 510 of the second body 500. The side portion 450 may be disposed on the stepped portion 520 of the second body 500. As the side portion 450 is disposed on the stepped portion 520, the first body 400 may be coupled to the second body 500 without a separate fastening means.

The first body 400 receives heat and radiates heat generated from the light emitting module 200. To this end, the first body 400 may be a material having good thermal conductivity of a material such as a metal such as aluminum.

The first body 400 may have a disc shape. The first body 400 is disposed on the holder 700.

The first body 400 is accommodated in the second body 500. The first body 400 may be disposed together with the member 300 in the upper opening of the second body 500. That is, the first body 400 is surrounded by the upper portion of the second body 500. Here, the first body 400 may be in contact with the second body 500 to transfer heat from the light emitting module 200 to the second body 500.

The second body 500 is disposed under the cover 100. The second body 500 together with the cover 100 forms the appearance of the lighting device according to the embodiment.

The second body 500 accommodates the light emitting module 200, the member 300, the first body 400, the case 600, the holder 700, and the driver 800.

The second body 500 has a hollow cylindrical shape. Therefore, since the second body 500 is hollow, as shown in FIGS. 5 to 6, the second body 500 has a predetermined accommodating part 560 therein. The light emitting module 200, the member 300, the first body 400, the case 600, the holder 700, and the driving unit 800 are disposed in the accommodating part 560.

The second body 500 has an upper end 510 and a lower end 530. Top portion 510 has an upper opening 550, and bottom portion 530 has a lower opening 570. The diameter of the upper opening 550 is larger than the diameter of the lower opening 570.

The upper end portion 510 surrounds the member 300 and the first body 400, and the member 300 and the first body 400 are disposed in the upper opening 550. The upper opening 550 is blocked by the member 300 and the first body 400. Here, the upper end 510 may be in contact with the first body 400 to receive a predetermined heat from the first body 400.

The lower end 530 has a shape extending from the upper end 510. The lower portion 530 accommodates at least a portion of the case 600 in which the driving unit 800 is stored.

Here, the step 520 may be disposed between the upper end 510 and the lower end 530. The side portion 450 of the first body 400 is disposed on the stepped portion 520. The step portion 520 may serve as a locking jaw that the side portion 450 of the first body 400 is caught. By the stepped portion 520, the first body 400 may be coupled to the second body 500 without a separate fastening means.

The lower end 530 has a predetermined distance from the upper end 610 of the case 600. That is, the lower end 530 has a predetermined space formed between the upper end 610 of the case 600. The separation distance from the lower end 530 to the upper end 610 of the case 600 is closer to the lower end 530 from the upper end 510. On the contrary, the distance from the lower end 530 toward the upper end 510 is farther away.

The driving unit 800 is accommodated in the case 600, and the driving unit 800 also emits not much heat. This heat is one cause of damage to the driver 800. In order to solve this, the lower end 530 may have a plurality of perforations 590. Since the heat emitted from the case 600 is discharged to the outside through the plurality of perforations 590, the driving unit 800 may prevent damage due to the heat emitted by the drive unit 800. Here, a flow path for moving the warmed air may be formed between the lower end portion 530 and the case 600.

The shape of the perforations 590 may have various shapes. For example, there may be a rectangular shape, an elliptic shape, a circular shape, and the like.

Perforations 590 may be formed long in one direction. That is, it may be formed long in one direction from the upper portion of the lower portion 530 toward the lower portion. Here, the spacing of the perforations 590 located on the lower side of the lower end 530 may be smaller than the spacing of the perforations 590 located on the upper side of the lower end 530.

The upper end 610 of the case 600 is inserted into the lower opening 570 of the lower end 530. As a result, the lower opening 570 is blocked by the case 600.

Like the first body 400, the second body 500 may be a metal material such as aluminum having good thermal conductivity.

The case 600 may include an upper end 610 and a lower end 630.

The upper end 610 accommodates the driving unit 800 therein and is received in the second body 500. The upper end 610 is spaced apart from the lower end 530 of the second body 500 by a predetermined interval.

The upper end 610 has a hollow cylindrical shape. The upper end 610 seals the driving part 800 to protect the driving part 800. By the upper end 610, the withstand voltage of the lighting apparatus according to the embodiment may be enhanced.

The upper end 610 may have a molding part (not shown) therein. The molding part (not shown) fixes the driving part 800 disposed inside the upper part 610 to the inside of the upper part 610, and transfers heat generated from the driving part 800 to the case 600. Here, the molding part (not shown) may be formed by curing the molding liquid.

The lower end 630 is coupled to the socket 900. The lower end 630 may have a thread or screw groove structure corresponding to the shape of the socket 900 for coupling with the socket 900.

The case 600 may be formed of a material having excellent insulation and durability. For example, the case 600 may be formed of a resin material.

The holder 700 seals the driving unit 800 together with the case 600. Specifically, the holder 700 is coupled to the upper end 610 of the case 600 to seal the driving unit 800. The holder 700 may have a disc shape, and may have a hook 710 for tight coupling with the upper end 610 of the case 600.

The holder 700 has a through hole 730 through which an electric wire of the driving unit 800 passes.

The driving unit 800 may include a support substrate 810 and a plurality of components 830 mounted on the support substrate 810. The plurality of components 830 may include, for example, a DC converter for converting AC power provided from an external power source into DC power, a driving chip for controlling driving of the light emitting module 200, and protecting the light emitting module 200. An electrostatic discharge (ESD) protection element may be included, but is not limited thereto.

The driver 800 may have a wire connected to the socket 900 and a wire connected to the light emitting module 200. Here, the driving unit 800 may have electrode pins other than wires. The wires or electrode pins are electrically connected to the light emitting module 200 through the through holes 730 of the holder 700, the through holes 413 of the first body 400, and the through holes 313 of the member 300. Connected.

The driver 800 receives a power signal from an external power source through a wire or an electrode pin, and provides a power control signal converted into the light emitting module 200.

The socket 900 is coupled to the lower end 630 of the case 600, and is electrically connected to an external power source. The socket 900 is electrically connected to a wire or an electrode pin of the driving unit 800.

The socket 900 may have a screw thread or screw groove structure for coupling with the lower end 630 of the case 600.

Although the above description has been made with reference to the embodiments, these are only examples and are not intended to limit the present invention, and those of ordinary skill in the art to which the present invention pertains should not be exemplified above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations 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: cover
200: light emitting module
300: absence
400: first body
500: second body
600: Case
700: Holder
800: drive unit
900: socket

Claims (11)

A light emitting module having a substrate and a light emitting element disposed on the substrate;
A first body disposed under the substrate of the light emitting module;
A case disposed under the first body;
A driving unit disposed in the case and electrically connected to the light emitting module; And
And a second body coupled to the first body.
The second body has one or more perforations,
A flow path is formed between the case and the second body so that heat generated by the driving unit is discharged through the perforations.
The first body has one surface having a mounting groove in which the light emitting module is disposed, and a side portion extending downward from the one surface,
And the second body has a stepped portion on which side portions of the first body are disposed. The method of claim 1,
The second body has an upper end with an upper opening and a lower end with a lower opening,
The first body is disposed in the upper opening, the lighting device is disposed in the lower opening. 3. The method of claim 2,
The lower end portion has the perforations and is spaced apart from the case by a predetermined distance. The method of claim 1,
A member disposed on the first body and having a hole in which a substrate of the light emitting module is disposed; And
And a cover coupled to the member and disposed on the light emitting module. delete Light emitting module;
A driver supplying a power signal to the light emitting module;
A case accommodating the driving unit;
A body that receives heat from the light emitting module to radiate heat and has one or more perforations;
A cover disposed on the body, the cover including a top having a curved surface and a bottom having an opening; And
A member disposed between the body and the cover, coupled to the body and the cover, and reflecting light from the cover;
The body surrounds the case, the perforation exposes the case,
And the member has a hole through which the light emitting module is exposed and a groove into which a portion of the lower part of the cover is inserted. The method according to claim 6,
The case is a lighting device spaced apart from the body at a predetermined interval. 7. The method according to claim 1 or 6,
And a holder disposed on the case to seal the driving part. 7. The method according to claim 1 or 6,
And a socket coupled to the case and electrically connected to the driving unit. delete 7. The method according to claim 1 or 6,
The perforation is formed long in one direction, the perforation interval of one side is smaller than the perforation interval of the other side lighting device.

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