KR20140100028A - Lighting apparatus - Google Patents

Lighting apparatus Download PDF

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Publication number
KR20140100028A
KR20140100028A KR1020130012711A KR20130012711A KR20140100028A KR 20140100028 A KR20140100028 A KR 20140100028A KR 1020130012711 A KR1020130012711 A KR 1020130012711A KR 20130012711 A KR20130012711 A KR 20130012711A KR 20140100028 A KR20140100028 A KR 20140100028A
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KR
South Korea
Prior art keywords
opening
heat sink
light emitting
heat
base plate
Prior art date
Application number
KR1020130012711A
Other languages
Korean (ko)
Inventor
홍재표
라인환
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020130012711A priority Critical patent/KR20140100028A/en
Publication of KR20140100028A publication Critical patent/KR20140100028A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The present invention relates to a lighting apparatus, and more particularly, to a lighting apparatus that can increase the heat radiation effect by increasing the weight of the heat sink and increasing the convective heat exchange area, can reduce thermal resistance between components provided on the heat transfer path, To a lighting device capable of performing separate heat dissipation for a light emitting device.

Description

[0001]

The present invention relates to a lighting apparatus, and more particularly, to a lighting apparatus that can increase the heat radiation effect by increasing the weight of the heat sink and increasing the convective heat exchange area, can reduce thermal resistance between components provided on the heat transfer path, To a lighting device capable of performing separate heat dissipation for a light emitting device.

Generally, incandescent lamps, discharge lamps, and fluorescent lamps are mainly used as light sources for lighting, and they are used for various purposes such as home use, landscape use, and industrial use.

In particular, resistive light sources such as incandescent lamps have low efficiency and high heat generation problems. In the case of discharge lamps, there are problems such as high voltage and high voltage. In fluorescent lamps, environmental problems caused by mercury use can be mentioned.

In order to solve the disadvantages of such light sources, there is a growing interest in light emitting diodes (LEDs) having many advantages such as efficiency, color diversity, and design autonomy.

 A light emitting diode is a semiconductor device that emits light when a voltage is applied in a forward direction. It has a long lifetime, low power consumption, electrical, optical and physical characteristics suitable for mass production, and is rapidly replacing incandescent bulbs and fluorescent lamps.

Meanwhile, a structure for effectively dissipating heat generated from the light emitting diodes (LEDs) is required, and a heat sink made of a metal material or a resin material is used to dissipate the heat generated from the light emitting diodes to the outside.

In the conventional heat sink, convection of the outside air occurs only on the outer circumferential surface, so that it is difficult to increase the convective area for heat exchange, and heat exchange is performed only at a point far from the heat source such as the light emitting diode.

In addition, there is a problem that heat dissipation efficiency is deteriorated due to heat resistance due to lifting between components provided on a heat transfer path for dissipating heat generated from the light emitting diode to the outside.

In addition, not only the light emitting diodes but also the electric parts for supplying power to the light emitting diodes are also provided inside the single heat sink, thereby deteriorating the heat dissipation efficiency of the front side.

An object of the present invention is to provide a lighting device which can reduce the weight of the heat sink and increase the convective heat exchange area.

It is another object of the present invention to provide a lighting device capable of reducing thermal resistance between parts provided on a heat transfer path.

It is another object of the present invention to provide a lighting device capable of performing heat dissipation for a plurality of heat sources.

Further, it is an object of the present invention to provide a lighting device capable of producing a beautiful appearance and capable of improving assembling performance.

It is another object of the present invention to provide a lighting device capable of improving the waterproof performance.

According to an aspect of the present invention, there is provided a heat sink comprising: a heat sink having a plurality of heat radiating fins; a heat sink having a first opening and a second opening opposite to the first opening; A base plate provided in a region of the heat sink exposed through the first opening, a circuit board provided on the base plate, and an LED mounted on the circuit board, Emitting module; And an electric field portion electrically connected to the light emitting module through the second opening.

Further, a clad sheet may be provided on the inner circumferential surface of the housing brazed to the radiating fins.

Further, the base plate and the heat sink may be brazed.

Further, a clad sheet may be provided on one surface of the base plate brazed to the heat sink.

Further, external air can be flowed through the space between the first openings and the adjacent heat radiating fins and the second openings.

Further, the radiating fins of the heat sink may be radially extruded, and the housing and the base plate may be formed by drawing or pressing.

In addition, the base plate may have a cross sectional area smaller than the cross sectional area of the heat sink.

In addition, the illumination device may further include a case surrounding the electric field part, and a plurality of connection rods connecting the case and the housing.

Also, the flow of the external air may be performed through the space between the first openings and the adjacent heat radiating fins, and the space between the second openings and the connection rods.

The illumination device may further include a lens unit disposed on the light emitting module, a first waterproof ring disposed between the lens unit and the light emitting module, and a second waterproof ring surrounding the periphery of the lens unit .

According to another aspect of the present invention, there is provided a heat sink comprising: a heat sink having a plurality of radially arranged heat radiating fins; a housing having a first opening and a second opening opposite to the first opening, the housing surrounding the heat sink; A base plate brazed to a region of the heat sink exposed through the first opening, a light emitting module including a circuit board provided on the base plate and an LED mounted on the circuit board, A power module including a front cover electrically connected to the light emitting module through an opening and a case surrounding the front cover; And a plurality of connection rods connecting the case and the housing.

Here, external air flows through a space between the first openings and adjacent heat radiating fins, a space between the second openings and the connection rods, and external air flowing into the case through the space between the connection rods Heat exchange between the air and the electric field can be performed.

In addition, the power module may include a connector for connecting the light emitting module to the electrical part, and the connector may be located inside the heat sink.

As described above, according to the lighting apparatus according to one embodiment of the present invention, the heat sink can be lightened and the convection heat exchange area can be increased to enhance the heat radiation effect.

Further, according to the illuminating device related to one embodiment of the present invention, the present invention can increase the heat radiation effect by reducing the thermal resistance between parts provided on the heat transfer path.

In addition, according to the lighting apparatus relating to an embodiment of the present invention, the heat radiation effect can be enhanced by performing separate heat radiation for a plurality of heat sources.

Further, according to the illumination device related to the embodiment of the present invention, a beautiful appearance can be produced and the assembling property can be improved.

Further, according to the lighting device related to the embodiment of the present invention, the waterproof performance can be enhanced.

1 is a perspective view of a lighting apparatus according to an embodiment of the present invention.
2 is an exploded perspective view showing essential components of a lighting device according to an embodiment of the present invention.
3 is a perspective view showing a state where each component shown in FIG. 2 is engaged.
4 is an exploded perspective view showing essential components of a lighting apparatus according to an embodiment of the present invention.
5 is an exploded perspective view of the illumination device shown in Fig.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

On the other hand, terms including an ordinal number such as a first or a second may be used to describe various elements, but the constituent elements are not limited by the terms, and the terms may refer to a constituent element from another constituent element It is used only for the purpose of discrimination.

FIG. 2 is a perspective view showing the main components of a lighting apparatus according to an embodiment of the present invention, and FIG. 3 is a perspective view showing a main part of the lighting apparatus according to an embodiment of the present invention, Is a perspective view in which elements are combined.

4 is an exploded perspective view showing essential components of an illumination apparatus according to an embodiment of the present invention, and Fig. 5 is an exploded perspective view of the illumination apparatus shown in Fig.

The lighting apparatus 100 according to an exemplary embodiment of the present invention includes a heat sink 120, a light emitting module 140 mounted on the heat sink 120, a power module 170 for supplying power to the light emitting module 140 ).

Specifically, the lighting apparatus 100 has a heat sink 120 having a plurality of heat radiating fins 121, a first opening 111, and a second opening 112 opposite to the first opening 111 And a housing 110 surrounding the heat sink 120 and brazed to the radiating fins 121.

The illumination device 100 includes a base plate 130 provided in a region of the heat sink 120 exposed through the first opening 111 and a circuit board 141 provided on the base plate 130. [ And a light emitting module 140 including an LED 142 mounted on the circuit board 141.

The lighting apparatus 100 includes a front portion 171 electrically connected to the light emitting module 140 through a second opening 112 of the heat sink 120.

Hereinafter, each component constituting the illumination device 100 will be described in detail with reference to the accompanying drawings.

As described above, when power is supplied to the light emitting module 140, the light emitting module 140 irradiates light to the outside, and at the same time, the temperature increases due to heat generated during the operation.

In order to solve such a problem, the heat generated in the light emitting module 140 is transmitted to the outside through the heat sink 120. In order to solve this problem, It is diverted.

The plurality of radiating fins 121 may have a radial structure spaced apart at predetermined intervals along the circumferential direction. The heat sink 120 may be provided with a through hole 123 by the radially formed heat dissipating fins 122 .

The through hole 123 may serve as a passageway for electrically connecting the front portion 171 and the light emitting module 140 to each other.

The radiating fins 121 may have a trapezoidal shape, a polygonal shape such as a rectangle, or an arc shape. Each of the heat radiating fins 121 may have a predetermined convective heat exchange area and perform heat exchange through convection with external air.

In the lighting apparatus 100, when the light emitting module 140 operates, a temperature difference is partially generated as the temperature of a certain region rises. As a result, natural convection of outside air occurs, And the space between the first and second passages 121 functions as a flow path through which the external air can flow.

That is, when the number of the heat dissipation fins 121 increases, the convection heat exchange area increases to increase the heat dissipation effect, but the volume and weight of the entire heat sink 120 increase.

Accordingly, there is a need for a structure that can reduce the weight of the heat sink 120 and lighten the lighting device 100 and increase the heat radiation effect.

The heat sink 120 may be exposed to allow the outside air to contact with the radiating fin 121 in an omnidirectional manner. However, in order to improve the appearance quality of the product, the illuminating device 100 may surround the heat sink 120 And a housing 110.

The housing 110 may have a first opening 111 and a second opening 112 opposite to the first opening 111 to allow external air to flow.

At this time, depending on the installation state of the illumination device 100, the outside air may flow into the first opening 111, may be discharged through the second opening 112 in the opposite direction, may flow into the second opening 112, Direction through the first opening 111 in the direction of the arrow.

In an embodiment, the housing 110 may have a hollow pipe shape, and a ring-shaped support rib 150 may be provided on the second opening 112 side of the housing 110.

In detail, when the housing 110 surrounds the heat sink 120, the outside air flows into the first opening 111, passes through the space between the heat-radiating fins 121, 112). ≪ / RTI >

Alternatively, the outside air may flow into the second opening 112, pass through the space between the radiating fins 121, and then be discharged through the first opening 111 in the opposite direction.

At this time, convection is performed for heat exchange between heat generated from the light emitting module 140 and outside air in the process of passing the space between the radiating fins 121.

Meanwhile, heat generated from the light emitting module 140 may be transmitted through the heat sink 120 in a conduction and convection manner.

Further, a base plate 130 may be used to mount the light emitting module 140 to the heat sink 120.

The light emitting module 140 includes a circuit board 141 and an LED 142 mounted on the circuit board 141. The LED 142 may be a plurality of LEDs.

The process of mounting the circuit board 141 of the light emitting module 140 directly to one side of the heat dissipation fins 121 of the heat sink 120 is difficult.

Therefore, the light emitting module 140 may be mounted on the base plate 130 after the base plate 130 is mounted on the heat sink 120.

In addition, the base plate 130 functions to stably mount the light emitting module 140 to the heat sink 120.

The base plate 130 may be formed of a metal material or a resin material having a high thermal conductivity so that heat generated from the light emitting module 140 may be transmitted to the heat sink 120.

In one embodiment, the base plate 130 may be formed of aluminum having an excellent thermal conductivity, and may preferably be formed of an Al3000 series.

The base plate 130 may have a through hole 132 and the through hole 132 may serve as a passageway for electrically connecting the front portion 171 and the light emitting module 140.

Specifically, electrical connection between the front portion 171 and the light emitting module 140 is made through the through hole 123 of the heat sink 120 and the through hole 132 of the base plate 130 described above.

Further, the base plate 130 may have a diameter smaller than the diameter of the heat sink 120.

The base plate 130 preferably has a cross sectional area smaller than the cross sectional area of the heat sink 120 in order to secure a flow space of the outside air.

In this structure, heat generated from the light emitting module 140 is transmitted to the base plate 130, and heat can be transmitted through the conductive plate.

The illumination device 100 may further include a heat transfer pad 161 disposed between the light emitting module 140 and the base plate 130 in order to increase the heat conduction efficiency.

The heat transfer pad 161 may be formed of a thermal interface material (TIM), which is a heat dissipation material.

Accordingly, the heat generated from the light emitting module 140 is transmitted to the base plate 130 through the heat transfer pad 161, and heat can be transmitted through the heat transmission pad 161 in detail.

The heat transferred to the base plate 130 is transmitted to the heat sink 120 and is diverted to the outside by the convection of the outside air with the plurality of the heat dissipation fins 121.

Meanwhile, heat is dissipated by natural convection through the outside air in the heat sink 120, and heat exchange can be performed between the housing 110 surrounding the heat sink 120 and the radiating fins.

At this time, it is preferable that heat conduction is performed between the heat radiating fins 121 of the heat sink 120 and the housing 110.

It is preferable that the inner circumferential surface 113 of the housing 110 and the outer circumferential surface 121a of the radiating fin 121 facing the inner circumferential surface of the housing 110 are in close contact with each other.

When a space is formed between the inner circumferential surface 113 of the housing 110 and the outer circumferential surface 121a of the radiating fin 121 due to assembly tolerance and manufacturing tolerance, thermal resistance on the heat transfer path, .

For this, the housing 110 and the radiating fins 121 are preferably brazed.

The inner circumferential surface of the housing 110 and the outer circumferential surface 121a of the heat radiating fin 121 facing the inner circumferential surface 113 of the housing 100 are brazed.

Brazing is a technique of joining two base materials by applying heat to a base material at a temperature not lower than a melting point of a base material to be bonded at a predetermined temperature (for example, 450 ° C) to be.

Such a brazing joint can secure a wide bonding area, can secure an excellent stress distribution and heat transfer performance, and has an advantage of easy bonding between dissimilar metals.

Since the brazing operation is performed at a predetermined temperature or higher, it is difficult to apply to the heat sink 120 and the housing 110 manufactured by a die-casting method.

Therefore, it is preferable that the housing 110 is formed by drawing or press working so that brazing can be performed. In one embodiment, the housing 110 may be formed by AL3000 series pressing.

The radiating fins 121 of the heat sink 110 having a radial structure may be integrally formed through extrusion. In one embodiment, the radiating fins 121 may be formed of AL1000 series.

Specifically, the plurality of radiating fins 121 are formed by extrusion molding, so that the thickness of the radiating fins 121 can be reduced and the gap between the radiating fins 121 can be narrowed.

Therefore, since the air contact area for convective heat exchange increases compared to the conventional heat sink for the same area, the heat radiation effect of the heat generated from the light emitting module 140 can be greatly improved, manufacturing cost can be reduced, Can be reduced.

Further, if the thickness of the heat dissipation fin is made thin and the interval between the heat dissipation fins is narrowed to form a large number of heat dissipation fins by die casting, there is a problem that the dissipation factor is increased and the dissipation fin is not formed in the die casting process.

A clad sheet may be provided on the inner circumferential surface 113 of the housing 110, which is brazed to the heat dissipation fins 121, to improve heat dissipation characteristics.

In one embodiment, the housing 110 may be formed of a clad sheet. The clad sheet is used as a bonding material for brazing and has an advantage of having excellent thermal conductivity, strength and molding characteristics.

The heat generated from the light emitting module 140 is transmitted to the inner circumferential surface 113 of the housing 110 through the outer circumferential surface 121a of the heat dissipation fins 121 in a conductive manner, 114) and the convection heat exchange of the outside air.

The heat generated from the light emitting module 140 is transmitted to the heat sink 120 via the base plate 130 and is transmitted to the heat sink 120 through the base plate 130 ≪ / RTI >

Here, the base plate 130 and the heat sink 120 may be brazed to enhance heat transfer efficiency.

As described above, a clad sheet may be provided on one surface 131 of the base plate 130 brazed to the heat sink 120 to improve thermal conductivity.

In an embodiment, the base plate 130 may be formed of a clad sheet.

In addition, the base plate 130 may be formed by an AL3000 series punching method rather than a die casting method for brazing.

Specifically, the lighting apparatus 100 has a heat sink 120 having a plurality of heat radiation fins 121, a first opening 111, and a second opening 112 opposite to the first opening 111 And a housing 110 surrounding the heat sink 120.

The illumination device 100 includes a base plate 130 brazed to a region of the heat sink 120 exposed through the first opening 110, a circuit board 141 provided on the base plate 130, And a light emitting module 140 including an LED 142 mounted on the circuit board 141.

The illumination device 100 may include a front portion 171 electrically connected to the light emitting module 140 through the second opening 112.

4, the lighting apparatus 100 includes a lens unit 163 disposed on the light emitting module 140, and a first light emitting module 163 disposed between the lens unit 163 and the light emitting module 140. [ A waterproof ring 162 and a second waterproof ring 164 surrounding the periphery of the lens unit 163.

Here, the illumination device 100 can improve the waterproof performance through the first waterproof ring 162 and the second waterproof ring 164.

The illumination device 100 further includes a first waterproof ring 164, a lens unit 163, a first waterproof ring 162, and a first waterproof ring 162 for mounting the light emitting module 140 to the base plate 130. [ And may include a fastening member (S).

At this time, a plurality of parts are integrally fastened through the first fastening member (S), thereby simplifying the manufacturing process and improving the assembling property.

The illumination device 100 may further include a case 174 surrounding the front portion 171 and a plurality of connecting rods 175 connecting the case 174 and the housing 110 have.

The plurality of connecting rods 175 may be formed integrally with the case 174. [

The first heat radiation path formed by the light emitting module 140 and the heat sink 120 and the first heat radiation path formed by the electric part 172 and the case 174 are separated by separating the housing 110 from the case 174 through the connection rod 175. [ 174 can be separated from each other.

The external air can flow through the space between the first opening 111 and the adjacent cooling fins 121 and the space between the second opening 112 and the connection rod 175, Such a flow of the outside air can be referred to as a first heat radiation path.

Also, heat exchange between the external air introduced into the case 174 and the electric parts 171 can be performed through the space between the connection rods 175, and the flow of the external air can be referred to as a second heat radiation path .

As described above, by separating the heat radiation paths of the plurality of heat generating light emitting modules 140 and the front portion 171, heat radiation efficiency can be increased.

The power module 170 may include a front portion 171 for supplying power to the light emitting module 140, a case 170 surrounding the front portion 171, A connector 173 for electrically connecting the module 140 and a cable 172 for connecting the connector 173 and the electric terminal 171. [

The connector 173 may be inserted into the through hole 123 of the heat sink 120 such that a portion of the connector 173 is positioned within the through hole 123 of the heat sink 120. [

In this structure, the light emitting module 140 can be protected from rainwater or the like that has flowed into the space between the connection rods 175.

The illumination device 100 may include a second fastening member B for fastening the connection rod 175 to the housing 110. [

The second fastening member B may be fastened to the housing 110 through the connecting rod 175.

A lighting apparatus 100 according to another embodiment of the present invention includes a heat sink 120 having a plurality of radiating fins 121 arranged in a radial direction, a first opening 111, and a second opening 111 in a direction opposite to the first opening 111 And a housing 110 surrounding the heat sink 120. The heat sink 120 has a second opening 112 therein.

The illumination device 100 includes a base plate 130 brazed to an area of the heat sink 120 exposed through the first opening 111 and a base plate 130 provided on the base plate 130. [ And a light emitting module 140 including a substrate 141 and an LED 142 mounted on the circuit board 141.

The lighting device 100 includes a front portion 171 electrically connected to the light emitting module 140 through the second opening portion 112 and a case 174 surrounding the front portion 171 And a plurality of connection rods 175 connecting the case 174 and the housing 110. The power module 170 includes:

In this structure, the flow of the external air can be made through the space between the first opening 111 and the adjacent radiating fins 121, and the space between the second opening 112 and the connecting rod 175.

Also, heat exchange between the external air introduced into the case 174 and the electric parts 171 can be performed through the space between the connection rods 174.

That is, by separating the heat radiation paths of the plurality of heat generation light emitting modules 140 and the front portion 171, the heat radiation efficiency can be increased.

The illumination device 100 may further include a mounting bracket 180. [

The illumination device 100 may be mounted on the mounting bracket 180 after the mounting bracket 180 is first installed in the installation space and the illumination device 100 may be installed in the illumination direction The mounting bracket 180 can be mounted rotatably.

The mounting bracket 180 may include a first member 181 that is seated on a mounting surface and a second member 183 that extends from the first member 181. The second member 183 may include a plurality As shown in FIG.

The first member 181 may be provided with a through hole 182 through which the fastening member is inserted and the second member 183 may be provided with a fastening member 180 for fastening the fastening member 180 to the case 174. [ A through hole 184 for inserting the three fastening members C may be provided.

The illumination device 100 may include a fixing bracket 185 disposed between the third fastening member C and the through hole 184 of the second member 183.

As described above, according to the lighting apparatus according to one embodiment of the present invention, the heat sink can be lightened and the convection heat exchange area can be increased to enhance the heat radiation effect.

Further, according to the illuminating device related to one embodiment of the present invention, the present invention can increase the heat radiation effect by reducing the thermal resistance between parts provided on the heat transfer path.

In addition, according to the lighting apparatus relating to an embodiment of the present invention, the heat radiation effect can be enhanced by performing separate heat radiation for a plurality of heat sources.

Further, according to the illumination device related to the embodiment of the present invention, a beautiful appearance can be produced and the assembling property can be improved.

Further, according to the lighting device related to the embodiment of the present invention, the waterproof performance can be enhanced.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

100: Lighting device
110: Housing
120: Heat sink
121: heat sink fin
130: Base plate
140: Light emitting module

Claims (13)

A heat sink having a plurality of radiating fins;
A housing having a first opening and a second opening opposite to the first opening, the housing surrounding the heat sink and brazed to the radiating fins;
A base plate provided in a region of the heat sink exposed through the first opening;
A light emitting module including a circuit board provided on the base plate and an LED mounted on the circuit board; And
And an electrical part electrically connected to the light emitting module through the second opening. The method according to claim 1,
And a clad sheet is provided on an inner peripheral surface of the housing brazed to the radiating fins. The method according to claim 1,
Wherein the base plate and the heat sink are brazed. The method of claim 3,
And a clad sheet is provided on one surface of the base plate brazed to the heat sink. The method according to claim 1,
Wherein a flow of outside air is made through the space between the first opening and the adjacent heat radiating fins and through the second opening. The method according to claim 1,
The radiating fins of the heat sink are radially extruded,
Wherein the housing and the base plate are formed by drawing or pressing. The method according to claim 1,
Wherein the base plate has a cross sectional area smaller than the cross sectional area of the heat sink. The method according to claim 1,
A case surrounding the electric field portion and
Further comprising a plurality of connecting rods connecting the case and the housing. 9. The method of claim 8,
Wherein external air flows through a space between the radiating fins adjacent to the first opening and a space between the second opening and the connecting rods. The method according to claim 1,
A lens unit disposed on the light emitting module;
A first waterproof ring disposed between the lens unit and the light emitting module; And
And a second waterproof ring surrounding the periphery of the lens unit. A heat sink having a plurality of radiating fins radially arranged;
A housing having a first opening and a second opening opposite to the first opening, the housing surrounding the heat sink;
A base plate brazed to an area of the heat sink exposed through the first opening;
A light emitting module including a circuit board provided on the base plate and an LED mounted on the circuit board;
A power module including a front cover electrically connected to the light emitting module through the second opening and a case surrounding the front cover; And
And a plurality of connecting rods connecting the case and the housing. 12. The method of claim 11,
The flow of the external air is made through the space between the radiating fins adjacent to the first opening and the space between the second opening and the connecting rods,
And heat exchange is performed between the external air and the electric field introduced into the case through the space between the connecting rods. 12. The method of claim 11,
Wherein the power module includes a connector for connecting the light emitting module to the electrical part,
Wherein the connector is located inside the heat sink.
KR1020130012711A 2013-02-05 2013-02-05 Lighting apparatus KR20140100028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130012711A KR20140100028A (en) 2013-02-05 2013-02-05 Lighting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130012711A KR20140100028A (en) 2013-02-05 2013-02-05 Lighting apparatus

Publications (1)

Publication Number Publication Date
KR20140100028A true KR20140100028A (en) 2014-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130012711A KR20140100028A (en) 2013-02-05 2013-02-05 Lighting apparatus

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