KR102066611B1 - lighting device - Google Patents

Abstract

A lighting device, comprising: a heat dissipation member including a hollow; a light source module disposed in the hollow of the heat dissipation member; an optical member covering the hollow of the heat dissipation member; and a driving unit disposed under the heat dissipation member; The driving part is electrically connected to the connection terminal by a metal structure, the metal structure is in contact with the driving part to support the driving part, the connection part of which one side contacts the support part and the other side contacts the connection terminal, the driving part, the supporting part and It may include a fastening member for fastening the connection at the same time. Here, the support of the metal structure may include a first contact portion in contact with the heat dissipation member, a third contact portion in contact with the driving unit, and a second contact portion in contact with the first contact portion and the third contact portion. In addition, the connection portion of the metal structure includes a first segment contacting the support of the metal structure, a fourth segment contacting the connection terminal, and a second segment disposed between the first and fourth segments to contact the first segment. And a third segment disposed between the second and fourth segments and contacting the second and fourth segments.

Description

Lighting device

Embodiments relate to a lighting device.

In general, a down light is a lighting method that drills a hole in a ceiling and embeds a light source therein, and is widely used as an architectural lighting technique for integrating lighting and buildings.

Such a buried light is a structure that is embedded in the ceiling, there is almost no exposure of the lighting fixture has the advantage that the ceiling surface looks neat, and furthermore, because the ceiling surface is dark, it is a suitable way to create an atmosphere indoor space. .

1 is a view showing a general lighting device.

As shown in FIG. 1, the lighting apparatus includes a light source module 1 and a reflector 2 for setting an emission directing angle of light emitted from the light source module 1.

Here, the light source module 1 may include at least one LED light source 1a provided on a printed circuit board (PCB) 1b.

The reflector 2 focuses the light emitted from the LED light source 1a so that the reflector 2 can be emitted through the opening with a predetermined directivity angle, and may have a reflective surface on the inner surface.

As described above, the lighting device may be used as an illumination lamp that focuses a plurality of LED light sources 1a to obtain light, and is mounted in the ceiling or wall of the building to expose the opening side of the reflector 2. It can be used as a downlight.

However, the lighting device has a disadvantage in that the electrical connection method between the connection terminal exposed to the outside and the driving unit uses a wire, so that the electrical connection work is not only slow, but also electrically shorted and difficult for heat dissipation.

Therefore, in the future, there will be a need for the development of a lighting device that can simplify the electrical connection work, solve the electrical short-circuit problem and improve the heat dissipation effect.

Embodiments provide a lighting device that can prevent electrical short circuits and improve heat dissipation efficiency by using a metal structure for electrical connection.

The embodiment includes a heat dissipation member including a hollow, a light source module disposed in the hollow of the heat dissipation member, an optical member covering the hollow of the heat dissipation member, and a driving unit disposed under the heat dissipation member, The metal structure is electrically connected to the connecting terminal and the metal structure is in contact with the driving part to support the driving part, the connecting part having one side contacting the supporting part and the other side contacting the connecting terminal, and the driving part, the supporting part and the connecting part at the same time. It may include a fastening member for fastening.

Here, the support of the metal structure may be in contact with the heat dissipation member.

The support part of the metal structure may include a first contact part contacting the heat radiating member, a third contact part contacting the driving part, and a second contact part contacting the first contact part and the third contact part.

Subsequently, the first and second contact portions may be disposed in a first direction, and the third contact portion may be disposed in a second direction perpendicular to the first direction.

Next, the surface of the first and second contacts may be curved, and the surface of the third contact may be flat.

Here, the fastening hole may be disposed in the third contact portion.

The third contact portion may contact the lower surface of the driving portion facing the connection terminal.

In addition, the connecting portion of the metal structure is connected to the first segment (segment) in contact with the support of the metal structure, the fourth segment in contact with the connecting terminal, and the second segment disposed between the first and fourth segments in contact with the first segment And a third segment disposed between the second and fourth segments and contacting the second and fourth segments.

Here, the second and third segments may be disposed in a first direction, and the first and fourth segments may be disposed in a second direction perpendicular to the first direction.

In this case, the fastening hole may be disposed in the first segment.

The surfaces of the first and fourth segments may be flat, and the surfaces of the second and third segments may be curved.

Subsequently, the first and fourth segments may be disposed to face each other.

Next, a fastening hole is disposed in the edge region of the driving unit, and the fastening member may penetrate the fastening hole.

The embodiment uses a metal structure for the electrical connection, the electrical connection operation is simple, and can prevent the electrical short, the reliability can be improved.

In addition, the heat dissipation efficiency of the driving unit may be improved by contacting the metal structure for electrical connection with the heat dissipation member.

1 is a cross-sectional view showing a general lighting device
2 is a view for explaining a lighting apparatus according to an embodiment;
3 shows a metal structure and a drive part separated from the housing;
4 is a view showing a metal structure and a driving unit fastened to a housing;
5a to 5c are views showing the support of the metal structure, Figure 5a is a perspective view
6a to 6c are views showing the connection of the metal structure, Figure 6a is a perspective view
7 is a cross-sectional view showing the connection between the drive unit and the support and the connection of the metal structure

Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings.

In the description of the embodiments, each layer, region, pattern, or structure is formed “on” or “under” of a substrate, each layer (film), region, pad, or pattern. In the case where it is described as, “on” and “under” include both “directly” or “indirectly” formed through another layer. In addition, the criteria for the top or bottom of each layer will be described with reference to the drawings.

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

2 is a view for explaining a lighting apparatus according to an embodiment.

As shown in FIG. 2, the embodiment includes a housing 100, a light source module (not shown), a metal structure 300, a driver (not shown), and an optical member ( an optical member 500 and a radiation member 400.

Here, the housing 100 may include an upper opening and a lower opening, and the driving unit and the metal structure 300 may be disposed in the housing 100.

The light source module may be disposed above the heat dissipation member 400, and the driving unit may be disposed below the heat dissipation member 400 to be electrically connected to the light source module.

Next, the driving unit (not shown) may be disposed in the housing 100 disposed under the heat dissipation member 400, and may include a connection terminal 140 exposed to the outside.

Here, the driving unit may include a circuit element for driving a light source of the light source module, and a circuit board and a metal structure 300 connected to the connection terminal 140 may be disposed.

The circuit elements of the driving unit may include a DC converter for converting AC power provided from an external power source into a DC power source, a driving chip for controlling the driving of the light source, an ESD protection element for protecting the light source, and the like. It may be.

Subsequently, the driving unit may be electrically connected to the connection terminal 140 by the metal structure 300.

Here, the metal structure 300 includes a support part which contacts the driving part to support the driving part, a connection part where one side contacts the support part and the other side contacts the connection terminal 140, and a fastening member which simultaneously couples the driving part, the support part and the connection part. It may include.

In this case, the support of the metal structure 300 may contact the heat dissipation member 400.

The support part of the metal structure 300 may include a first contact part contacting the heat dissipation member 400, a third contact part contacting the driving part, and a second contact part contacting the first contact part and the third contact part. .

Here, the first and second contact portions may be disposed in a first direction, and the third contact portion may be disposed in a second direction perpendicular to the first direction.

Subsequently, the third contact portion may be provided with a fastening hole and may contact the lower surface of the driving portion facing the connection terminal.

In addition, the connection portion of the metal structure 300 is disposed between the first segment in contact with the support of the metal structure 300, the fourth segment in contact with the connection terminal, and the first and fourth segments, and thus, the first segment may be disposed. The second segment may be in contact with the segment, and the third segment may be disposed between the second and fourth segments to be in contact with the second and fourth segments.

Here, the second and third segments may be disposed in a first direction, and the first and fourth segments may be disposed in a second direction perpendicular to the first direction.

In this case, the fastening hole may be disposed in the first segment.

Subsequently, the heat dissipation member 400 may include a hollow having an upper portion.

The light source module including the light source and the substrate and the optical member 500 may be accommodated in the hollow of the heat dissipation member 400.

At this time, the heat dissipation member 400 may have a cylindrical shape or a polygonal column shape, but is not limited thereto.

Subsequently, the upper portion of the hollow of the heat dissipation member 400 may be covered by the optical member 500. The diameter of the hollow of the heat dissipation member 400 may be smaller than the diameter of the optical member 500. Accordingly, the diameter of the hollow of the heat dissipation member 400 may be larger than the diameter of the optical member 500.

In addition, the heat dissipation member 400 may include a plurality of openings that expose the side surface 504 of the optical member 500.

In addition, a plurality of heat dissipation fins may be disposed on the outer surface of the heat dissipation member 400.

In addition, the heat dissipation member 400 may be formed of a metal material or a resin material, but is not limited thereto.

For example, the heat dissipation member 400 may be any material selected from aluminum, nickel, copper, silver, tin, and the like.

Next, the light source module including the light source and the substrate may be disposed in the hollow of the heat dissipation member 400.

Here, the light source module may include a substrate having an electrode pattern and a light source disposed on the substrate.

In this case, the substrate may be any one of a printed circuit board (PCB), a multilayer PCB, a metal PCB (MPCB), a metal core PCB (MCPCB), a flexible PCB (FPCB), and a ceramic PCB. Can be.

The substrate may be formed of a material that efficiently reflects light, or may be formed of a color that reflects light efficiently, for example, white, silver, or the like.

In addition, the substrate may include any one of a reflective coating film and a reflective coating material layer, and may reflect light generated from the light source toward the optical member 500.

Subsequently, the light source of the light source module may be disposed on the substrate.

The light source may be a top view type light emitting diode.

In some cases, the light source may be a side view type light emitting diode.

The light source may be a light emitting diode chip, and the light emitting diode chip may include a blue LED chip or an ultraviolet LED chip, or a red LED chip, a green LED chip, a blue LED chip, and a yellow green LED chip. In addition, the package may be configured by combining at least one or more of the white LED chip.

In addition, the light emitting diode chip may have a phosphor.

The phosphor may be at least one of a garnet-based (YAG, TAG), a silicate, a nitride, and an oxynitride.

Subsequently, the phosphor may be one or more of a yellow phosphor, a green phosphor, and a red phosphor.

In addition, the white LED may be implemented by combining yellow phosphor on the blue LED, or simultaneously using red phosphor and green phosphor on the blue LED, and yellow phosphor on the blue LED. Yellow phosphor, red phosphor, and green phosphor may be simultaneously used.

In addition, the light source of the light source module may be bonded to the LED package on the substrate, the LED chip not packaged on the substrate may be directly bonded.

In addition, the substrate of the light source module may directly contact the heat dissipation member 400.

In some cases, a heat radiation pad may be disposed between the substrate of the light source module and the heat radiation member 400.

Subsequently, the optical member 500 may cover the hollow of the heat dissipation member 400.

Here, the milky white paint may be coated on the lower surface of the optical member 500, and the milky white paint may include a diffusion agent capable of diffusing light passing through the optical member 500.

Next, the material of the optical member 500 may be glass, plastic, polypropylene, polyethylene, polycarbonite, or the like, but is not limited thereto.

In addition, the optical member 500 may include an inner surface facing the light source and an outer surface exposed to the outside, and the roughness of the inner surface of the optical member 500 may be greater than the roughness of the outer surface of the optical member 500.

This is because when the roughness of the inner surface of the optical member 500 is larger than the roughness of the outer surface of the optical member 500, scattering and diffusion of light emitted from the light source can be increased.

The optical member 500 may include a phosphor so as to excite light emitted from the light source.

Here, the phosphor may include at least one of a Garnet-based (YAG, TAG), a silicate (Silicate), a nitride (Nitride), an oxynitride (oxyxyride) system.

In addition, the side surface of the optical member 500 may be inclined with respect to the lower surface or the upper surface of the optical member 500, and may be vertical in some cases.

Here, the side surface of the optical member 500 may have an uneven pattern.

In this case, the uneven pattern may be any one of a concave curved surface, a convex curved surface, and a step shape.

In addition, a plurality of sub lenses may be disposed inside the optical member 500, and each sub lens may be disposed corresponding to the light source of the light source module.

As described above, the embodiment having the structure uses a metal structure for electrical connection, so that the electrical connection work is simple and electrical short can be prevented, so that reliability can be improved.

In addition, the heat dissipation efficiency of the driving unit may be improved by contacting the metal structure for electrical connection with the heat dissipation member.

3 is a view showing a metal structure and the drive unit separated from the housing, Figure 4 is a view showing a metal structure and the drive unit fastened to the housing.

3 and 4, the driving unit 220 and the metal structure 300 may be mounted in the housing 100, and the driving unit 220 may be connected to the connection terminal 140 by the metal structure 300. ) Can be electrically connected.

Here, the metal structure 300 is in contact with the driving unit 220 to support the driving unit 310, the connection portion 320 in which one side is in contact with the support 310 and the other side in contact with the connection terminal 140. ), And a fastening member for fastening the driving unit 220, the supporting unit 310, and the connecting unit at the same time.

In this case, the support of the metal structure 300 may contact the heat dissipation member 400.

The support part of the metal structure 300 may include a first contact part contacting the heat dissipation member 400, a third contact part contacting the driving part, and a second contact part contacting the first contact part and the third contact part. .

Here, the first and second contact portions may be disposed in a first direction, and the third contact portion may be disposed in a second direction perpendicular to the first direction.

Subsequently, the third contact portion may be provided with a fastening hole and may contact the lower surface of the driving portion facing the connection terminal.

In addition, the connection part 320 of the metal structure 300 may include a first segment contacting the support 310 of the metal structure 300, a fourth segment contacting the connection terminal 140, and a first segment. And a second segment disposed between the fourth segments and contacting the first segment, and a third segment disposed between the second and fourth segments and contacting the second and fourth segments.

Here, the second and third segments may be disposed in a first direction, and the first and fourth segments may be disposed in a second direction perpendicular to the first direction.

In this case, the fastening hole may be disposed in the first segment.

5a to 5c show a support of a metal structure, FIG. 5a is a perspective view, FIG. 5b is a plan view, and FIG. 5c is a front view.

As shown in FIGS. 5A-5C, the support 310 of the metal structure may include first, second, and third contacts 311, 312, and 313.

Here, the first contact portion 311 may be in contact with the heat radiation member.

In this case, since the first contact portion 311 is disposed along the inner surface of the housing, the surface may have a curved shape.

In addition, a part of the first contact part 311 may be in contact with the heat dissipation member, and the other part may be in contact with the housing.

That is, the outer surface 310b of the first contact portion 311 may be in contact with the heat dissipation member.

This is because the heat dissipation efficiency of the drive unit can be improved by bringing the metal structure for electrical connection into contact with the heat dissipation member.

Subsequently, the second contact portion 312 extends in the downward direction of the first contact portion 311, and the width of the second contact portion 312 may be narrower than the width of the first contact portion 311.

The reason is to increase the heat dissipation efficiency by increasing the contact area between the first contact portion 311 and the heat dissipation member.

In addition, since the second contact portion 312 is also disposed along the inner side surface of the housing similarly to the first contact portion 311, the surface may have a curved shape.

The third contact portion 313 may be bent from the second contact portion 312 to be in contact with the driving portion.

That is, the first and second contact parts 311 and 312 may be disposed in the first direction, and the third contact part 313 may be bent and disposed in a second direction perpendicular to the first direction.

Here, the surface of the third contact portion 313 may be a plane.

The reason is that the lower surface of the drive section must be supported.

In addition, the first contact hole 315 may be disposed in the third contact portion 313.

Here, a fastening screw may be inserted into the first fastening hole 315 to fasten the connection between the driving unit and the metal structure.

Accordingly, the upper surface of the third contact portion 313 may contact the lower surface of the driving unit facing the connection terminal, and the lower surface of the third contact portion 313 may contact the connection portion of the metal structure.

6a to 6c show the connection of the metal structure, FIG. 6a is a perspective view, FIG. 6b is a plan view, and FIG. 6c is a front view.

6A through 6C, the connection part 320 of the metal structure may include first, second, third, and fourth segments 321, 322, 323, and 324.

Here, the first segment 321 may contact the support of the metal structure.

In this case, the second fastening hole 325 may be disposed in the first segment 321.

Here, a fastening screw may be inserted into the second fastening hole 325 to fasten the support part of the metal structure.

Thus, the surface of the first segment may be planar.

This is because it must be contacted and fastened to the lower surface of the support of the metal structure.

Subsequently, the second segment 322 may be bent vertically from the first segment 321.

That is, when the first segment 321 is disposed in the second direction, the second segment 322 may be disposed in the first direction perpendicular to the second direction.

Here, the surface of the second segment 322 may be curved.

This is because it is disposed along the inner surface of the housing having a curved surface.

Thus, the outer surface of the second segment 322 may contact the housing.

This is because the heat dissipation efficiency of the drive unit can be improved by bringing the metal structure for electrical connection into contact with the housing.

However, in some cases, the outer surface of the second segment 322 may be disposed away from the housing.

Subsequently, the third segment 323 may be disposed between the second and fourth segments 322 and 324 to contact the second and fourth segments 322 and 324.

Here, the third segment 323 may be disposed to be inclined with respect to the surface of the fourth segment 324.

This is because the third segment 323 is inclined to the inside of the housing, whereby the fourth segment 324 can be brought into contact with the connection terminal 140 located inside the housing.

Thus, the surface of the third segment 323 may be planar, and the outer surface of the third segment 323 may be in contact with the housing.

This is because the heat dissipation efficiency of the drive unit can be improved by bringing the metal structure for electrical connection into contact with the housing.

However, in some cases, an outer surface of the third segment 323 may be disposed away from the housing.

Subsequently, the fourth segment 324 may be in contact with the connection terminal 140, and may be bent from the third segment 323 in the same direction as the first segment 321.

Here, the surface of the fourth segment 324 may be planar.

The reason is that the connection terminal 140 is in contact with and fastened.

That is, the upper surface of the fourth segment 324 may face the lower surface of the first segment 321, and the lower surface of the fourth segment 324 may contact the connection terminal 140.

The widths of the first, second, third, and fourth segments 321, 322, 323, and 324 may be the same.

However, in some cases, the widths of the first, second, third, and fourth segments 321, 322, 323, and 324 may be different from each other.

7 is a cross-sectional view illustrating a connection relationship between a driving unit, a support unit, and a connection unit of a metal structure.

As shown in FIG. 7, the driving part 220, the support part 310 and the connection part 320 of the metal structure may be mounted in the housing 100, and the driving part 220 may include the support part 310 and the metal structure. By the connection unit 320, it may be electrically connected to the connection terminal 140.

Here, the support 310 of the metal structure may support the edge region of the lower surface of the driving unit 220.

At this time, the driving unit 220 may be a fastening hole is disposed in the edge region, the fastening member 330 may pass through the fastening hole.

In addition, the connection part 320 of the metal structure may electrically connect between the support part 310 and the connection terminal 140.

In addition, a portion of the support 310 of the metal structure may be in contact with the housing 100, and the other portion may be in contact with the heat dissipation member (not shown).

Thus, a portion of the support 310 of the metal structure may be exposed outside the housing 100.

Subsequently, the connection part 320 of the metal structure may be electrically connected to the connection terminal 140 exposed to the outside through a hole disposed under the housing 100.

As such, the driving unit, the supporting unit and the connecting unit of the metal structure may be electrically connected to each other through the fastening member 330.

Therefore, the embodiment can be improved by using a metal structure for electrical connection, the electrical connection operation is simple, and can prevent the electrical short.

In addition, the heat dissipation efficiency of the driving unit may be improved by contacting the metal structure for electrical connection with the heat dissipation member.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, the above description has been made with reference to the embodiment, which is merely an example, and is not intended to limit the present invention. Those skilled in the art to which the present invention pertains will be illustrated as above without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will be construed as being included in the scope of the invention defined in the appended claims.

100 housing 220 drive part
300: metal structure 310: support
320: connecting portion 330: fastening member
400: heat dissipation member 500: optical member

Claims (13)

A heat dissipation member including a hollow;
A light source module disposed in the hollow of the heat dissipation member;
An optical member covering the hollow of the heat dissipation member;
A driving unit disposed under the heat dissipation member; And
A metal structure electrically connecting the driving part to a connection terminal;
The metal structure,
A support portion having a first contact portion in contact with the heat radiating member, a third contact portion in contact with the drive portion, a second contact portion in contact with the first contact portion and a third contact portion, and supporting the drive portion;
A connection part having one side contacting the support part and the other side contacting the connection terminal;
Includes a fastening member for fastening the drive unit, the support and the connection at the same time,
The surface of the first and second contacts is curved,
The surface of said third contact is planar. delete delete The lighting device of claim 1, wherein the first and second contact portions are disposed in a first direction, and the third contact portion is disposed in a second direction perpendicular to the first direction. delete The lighting apparatus of claim 4, wherein the third contact portion is provided with a fastening hole. The lighting device of claim 4, wherein the third contact portion contacts a lower surface of the driving portion facing the connection terminal. The method of claim 1, wherein the connection of the metal structure,
A first segment in contact with the support of the metal structure;
A fourth segment in contact with the connection terminal;
A second segment disposed between the first and fourth segments in contact with the first segment;
And a third segment disposed between the second and fourth segments, the third segment being in contact with the second and fourth segments. The lighting device of claim 8, wherein the second and third segments are disposed in a first direction, and the first and fourth segments are disposed in a second direction perpendicular to the first direction. The lighting device of claim 8, wherein the first segment is provided with a fastening hole. 9. The lighting device of claim 8, wherein the surfaces of the first and fourth segments are planar, and the surfaces of the second and third segments are curved. The lighting device of claim 8, wherein the first and fourth segments face each other. The lighting device of claim 1, wherein a fastening hole is disposed in an edge region of the driving part, and the fastening member passes through the fastening hole.

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