KR101610318B1

KR101610318B1 - Lighting device

Info

Publication number: KR101610318B1
Application number: KR1020120055594A
Authority: KR
Inventors: 임동녕; 김천주; 최태영; 김도환
Original assignee: 엘지이노텍 주식회사
Priority date: 2012-05-24
Filing date: 2012-05-24
Publication date: 2016-04-07
Also published as: KR20130131778A

Abstract

An embodiment relates to a lighting device.
A lighting device according to an embodiment includes: a cover having an opening; A heat dissipation member including a base portion including an upper surface and a lower surface, and a member extending from the upper surface of the base portion through the opening in an inward direction of the cover and including at least one side surface; A light source module including a substrate disposed on a side surface of the member and a light emitting element disposed on the substrate; A socket for providing external power to the light source module; A power supply provided between the light source module and the socket; And a reflector disposed on an upper surface of the member, wherein the heat discharger has a through hole passing between a lower surface of the base and an upper surface of the member, and the power providing portion is disposed in the through hole.

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 .

The embodiment provides an illumination device capable of improving heat radiation performance.

In addition, the embodiment provides a lighting device that performs optimal backlighting (Omni Direction) performance.

Further, the embodiment provides an illumination device capable of improving workability in assembly.

A lighting device according to an embodiment includes: a cover having an opening; A heat dissipation member including a base portion including an upper surface and a lower surface, and a member extending from the upper surface of the base portion through the opening in an inward direction of the cover and including at least one side surface; A light source module including a substrate disposed on a side surface of the member and a light emitting element disposed on the substrate; A socket for providing external power to the light source module; A power supply provided between the light source module and the socket; And a reflector disposed on an upper surface of the member, wherein the heat discharger has a through hole passing between a lower surface of the base and an upper surface of the member, and the power providing portion is disposed in the through hole.
The power supply unit may include an upper end disposed inside the member and a lower end disposed inside the base.
And a housing in which the power supply unit is disposed.
Wherein the housing includes an upper housing and a lower housing, wherein the power providing portion includes an upper end portion and a lower end portion, the upper housing is disposed between the member and the upper end of the power providing portion, And may be disposed between the lower end of the providing portion.
The member may be integral with the base portion.
The diameter of the through hole at the lower surface of the base portion may be larger than the diameter of the through hole at the upper surface of the member.
Wherein the through hole has a first portion surrounded by the member and a second portion surrounded by the base portion, the shape of the first portion and the shape of the second portion being different, and the volume of the first portion being different from the shape of the second portion The volume of the portion may be less than the volume of the portion.

A lighting device according to an embodiment includes: a cover having an opening; A heat radiator comprising a base portion and a member extending into the cover through an opening of the cover in the base portion, the member including at least one side surface; A light source module including a substrate disposed on a side surface of the member and a light emitting element disposed on the substrate; And a reflector coupled to the member and including a first portion disposed on an upper surface of the member, wherein the base portion and the member are integrally formed, the first portion of the reflector being parallel to an upper surface of the member An upper surface and a lower surface, and a side surface disposed between an upper surface of the first portion and a lower surface of the first portion.
The reflector may include a second portion extending from the first portion toward the base portion.
The second portion may be plural.
The side of the first portion may be curved.
The minimum length from the upper surface of the first portion of the reflector to the uppermost end of the cover may be 15 mm or more.
A second portion of the reflector is disposed on a side of the member, and the second portion may have a placement groove in which the light source module is disposed.
The heat discharging body may have a through hole extending from the base portion to an upper surface of the member, and the lighting device may further include a power supply unit disposed in the through hole.
The member may include an extension extending from the member to the through hole.
The material of the reflector may be a white polycarbonate (PC).
The reflector may be a material having electrical insulation.
The surface of the reflector may be surface treated to scatter light from the light source module.
The angle between the side surface of the member and the central axis may be 0.3 degree or more and 3 degrees or less.
The thickness of the member may be 2.5 mm or more and 5 mm or less.
The plurality of light emitting devices are disposed on one surface of the substrate, and the light emitting devices are chips of a lighting emitting diode emitting red, green, or blue light, or emitting ultraviolet light. Emitting diode chip.
The light source module may further include a lens covering the light emitting device, and the lens may include a phosphor.
Wherein the substrate has a top surface on which the light emitting element is disposed and a bottom surface disposed on a side surface of the member, the area of the side surface of the member is wider than the area of the bottom surface of the substrate, It may not be disposed.
The member may have a polygonal column shape having a plurality of side surfaces, and the number of side surfaces of the member may be equal to or greater than the number of the light source modules.
The light source module may include at least two metal members which are disposed on at least two sides of the member and electrically connect the light source modules.
The metal member may be bent in correspondence with the shape of the member.
The radiator includes radiating fins disposed on the outer surface of the base portion, and the upper end of the radiating fin may be wider from the upper end to the lower end of the base portion.
The upper end of the radiating fin may be disposed below the light distribution area of the light source module.
The thickness of the radiating fin may become thinner from the outer surface of the base portion toward the outer side.
The thickness of the radiating fin may be 0.8 mm or more and 3.0 mm or less.
Wherein the plurality of radiating fins are spaced apart from each other by a predetermined distance and the outermost spacing between the two radiating fins is greater than the innermost spacing between the two radiating fins .
The radiating fin may be powder coated.

Use of the lighting apparatus according to the embodiment can improve the heat radiation performance.

In addition, it is possible to perform an optimal post-lightning (Omni Direction) performance.

In addition, workability in assembly can be improved.

1 is a perspective view of a lighting apparatus according to an embodiment as viewed from above,
FIG. 2 is a perspective view of the lighting apparatus shown in FIG. 1,
Fig. 3 is an exploded perspective view of the illumination device shown in Fig. 1,
Fig. 4 is an exploded perspective view of the illumination device shown in Fig. 2,
Fig. 5 is a front view of the lighting apparatus shown in Fig. 1 when the cover is removed, Fig.
Fig. 6 is a front view of the illumination device shown in Fig. 1 when the cover and the reflector are removed;
FIG. 7 is a cross-sectional view of only the heat dissipator shown in FIG. 2,
FIG. 8 is a plan view of the heat dissipator shown in FIG. 2,
9 is a perspective view of only the housing shown in Fig.

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

In the description of 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 the lighting apparatus shown in Fig. 1, Fig. 3 is an exploded perspective view of the lighting apparatus shown in Fig. 1, and Fig. 4 is an exploded perspective view of the lighting apparatus shown in Fig. Fig. 5 is a front view of the lighting apparatus shown in Fig. 1, with the cover removed, Fig. 6 is a front view of the lighting apparatus shown in Fig. 1, to be.

1 to 6, an illumination apparatus according to an embodiment includes a cover 100, a light source module 200, a reflector 300, a heat sink 400, a housing 500, a power supply unit 600, Socket 700 as shown in FIG. Hereinafter, each configuration will be described in detail.

&Lt; Cover (100) >

The cover 100 has a bulb shape and has an opening 130 in which the hollow is hollow and a portion is opened.

The cover 100 is optically coupled to the light source module 200. For example, the cover 100 may diffuse, scatter, or excite light emitted from the light source module 200.

The cover 100 is engaged with the heat discharging body 400. To this end, the cover 100 may have a coupling portion 110. The engaging portion 110 may be inserted into the engaging groove 490 of the heat discharging body 400. The engaging portion 110 may have a threaded fastening structure. A threaded groove structure corresponding to the threaded shape is formed in the engaging groove 490 so that the cover 100 and the heat discharging body 400 can be easily engaged with each other. Workability can be improved.

The thickness of the cover 100 may have a value within a range of 1 mm or more and 2 mm or less.

The material of the cover 100 may be a light-diffusing PC (polycarbonate) for preventing the user's glare by the light emitted from the light source module 200. In addition, the cover 100 may be any one of glass, plastic, polypropylene (PP), and polyethylene (PE).

The inner surface of the cover 100 is corroded and a predetermined pattern is applied to the outer surface to scatter light emitted from the light source module 200. Therefore, the user's glare can be prevented.

The cover 100 can be manufactured by blow molding for post-light distribution. In blow molding, the diameter of the opening 130 of the cover 100 may be 3 mm or more and 20 mm or less.

The light source module 200 emits a predetermined light.

The light source module 200 may be plural. Specifically, the light source module 200 may include a first light source module 200a, a second light source module 200b, and a third light source module 200c.

Each of the first to third light source modules 200a, 200b and 200c may include a substrate 210a and a light emitting device 230a disposed on the substrate 210a.

The substrate 210a may be a printed circuit pattern on an insulator. For example, a printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, . The surface of the substrate 210a may be a material that efficiently reflects light, or may be coated with a color in which light is efficiently reflected, for example, white, silver, or the like.

The substrate 210a may have a predetermined hole 215a at the center thereof. The hole 215a may be a reference point for arranging the light emitting devices 230a and a screw for fixing the substrate 210a to the heat sink 400 may be inserted.

The plurality of light emitting devices 230a may be disposed on one surface of the substrate 210a. The light emitting device 230a may be a light emitting diode chip that emits red, green, or blue light, or a light emitting diode chip that emits ultraviolet light. Here, the light emitting diode may be a lateral type or a vertical type, and may emit blue, red, yellow, or green.

A lens may be disposed on the light emitting element 230a. The lens is arranged to cover the light emitting element 230a. Such a lens can adjust the directional angle and the direction of light emitted from the light emitting device 230a. The lens is a hemispherical type and can be a light transmitting resin such as a silicone resin or an epoxy resin without an empty space. The light transmitting resin may include a phosphor dispersed wholly or partially.

When the light emitting element 230a is a blue light emitting diode, the phosphor included in the light transmitting resin may be a garnet (YAG, TAG), a silicate, a nitride, an oxynitride, Or a combination thereof.

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

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

The light source module 200 may include a terminal plate 250. The first, second, and third light source modules 200a, 200b, 200c may be electrically connected through the terminal plate 250. For example, the first to third light source modules 200a, 200b, and 200c may be electrically connected in series using two terminal plates 250. FIG.

The terminal plate 250 may be made of a conductive metal. For example, the terminal plate 250 can be any of copper, nickel, and zinc plating. The terminal plate 250 may be a metal material that can be easily bent to fabricate the light source module 200. The thickness of the terminal plate 250 may be 0.1 mm or more and 0.5 mm or less.

The light source module 200 is disposed in the heat sink 400. Specifically, the substrates 210a of the first through third light source modules 200a, 200b, and 200c may be disposed on the outer surface 411 of the member 410 of the heat discharging body 400.

The reflector 300 is coupled to the heat discharging body 400. Specifically, the reflector 300 can engage with the member 410 of the heat discharging body 400.

The reflector 300 has a shape corresponding to the shape of the member 410 of the heat discharging body 400. In addition, the reflector 300 may have a shape capable of covering the member 410 of the heat discharging body 400. Specifically, the reflector 300 includes an upper portion 310 disposed on the upper surface of the member 410 of the heat radiator 400, a lower portion 330 disposed on the side surface of the member 410 of the heat radiator 400, Lt; / RTI >

The upper portion 310 of the reflector 300 may include a flat surface and may include a convex surface in the direction of the cover 100. When the upper portion 310 of the reflector 300 includes a curved surface, there is an advantage that the dark portion that can be generated at the uppermost portion of the cover 100 can be reduced.

The minimum length from the upper portion 310 of the reflector 300 to the uppermost end of the cover 100 may be 15 mm or more. If the length from the upper portion 310 of the reflector 300 to the inner surface of the cover 100 is less than 15 mm, a dark portion may be generated at the uppermost end of the cover 100. When the minimum length from the upper portion 310 of the reflector 300 to the inner surface of the cover 100 is 15 mm or more, the occurrence of dark portions can be remarkably reduced and the dark portions can be further reduced in density.

The reflector 300 may have a disposition groove 335. The placement groove 335 may be formed in the lower portion 330 of the reflector 300. The placement groove 335 may be a groove in which the light source module 200 mounted on the member 410 of the heat discharging body 400 is disposed. Specifically, the substrate 210a of the light source module 200 may be disposed in the placement groove 335. [ The reflector 300 is disposed on the member 410 of the heat sink 400 but the reflector 300 is not disposed on the light source module 200 by the placement groove 335. [

The material of the reflector 300 may be a white PC (polycarbonate) which easily reflects the light emitted from the light source module 200 and also has a heat resistance characteristic. This reflector 300 can increase the light extraction efficiency of the illumination device according to the embodiment.

The reflector 300 may be a material having electrical insulation. The reflector 300 may be disposed between the member 410 of the heat sink 400 and the terminal plate 250 of the light source module 200. The reflector 300 may block electrical contact between the terminal plate 250 and the heat discharger 400.

The surface of the reflector 300 is surface-treated to scatter light from the light source module 200 to prevent the user's glare.

&Lt; Heat radiator 400 >

The light source module 200 is disposed in the heat sink 400. The heat sink 400 receives heat from the light source module 200 and dissipates heat. The heat dissipating unit 400 is coupled to the cover 100 and accommodates the power supply unit 600 and the housing 500.

7 is a cross-sectional view of only the heat dissipator shown in Fig.

1 to 7, the heat sink 400 may include a member 410, a base 430, and a radiating fin 450.

The member 410 may extend upward from the top of the base portion 430. The member 410 may be integrally formed with the base portion 430 or may be bonded or bonded to the base portion 430 as a separate component from the base portion 430.

The member 410 may have a cylindrical shape. The light source module 200 is disposed on the outer surface of the cylindrical member 410.

The member 410 has a side surface 411 on which the light source module 200 is disposed. The member 410 may have a side surface 411 as many as the number of the light source modules 200. For example, the member 410 may have three side surfaces 411 on which the first to third light source modules 200a, 200b, and 200c are disposed, respectively. The three side surfaces 411 may be in surface contact with the lower surfaces of the substrates 210a of the first through third light source modules 200a, 200b, and 200c. To this end, the three side surfaces 411 may be flat surfaces. However, the present invention is not limited thereto, and the three side surfaces 411 may be curved surfaces. In this case, the substrates 210a may be flexible substrates.

The side surface 411 may be substantially parallel to the central axis X of the illumination device according to the embodiment, as shown in Fig. Here, the angle between the side surface 411 and the central axis X may be 0.3 degree or more and 3 degrees or less. When the angle between the side surface 411 and the central axis X is 0 degree or more and 0.3 degree or less, there is a problem that the front light distribution characteristic is weakened, and when the angle is 3 degrees or more, there is a problem that the rear light distribution characteristic is weakened.

The area of the side surface 411 is wider than the area of the lower surface of the substrate 210a and the substrate 210a is disposed at a lower end portion which is not the center portion of the side surface 411 as shown in FIG. Therefore, the substrate 210a is not disposed at the upper end of the side surface 411. [ The heat generated from the light source module 200 can be transferred from the member 410 to the upper end side of the member 410 as well as to the side of the base part 430, The temperature of the light source module 200 can be rapidly lowered. Therefore, the heat radiation performance of the lighting apparatus according to the embodiment can be improved.

Here, the length a from the uppermost end of the side surface 411 to the uppermost end of the substrate 210a may be 3 mm or more and 5 mm or less. If a is less than 3 mm, a significant heat dissipation effect can not be obtained, and if it is 5 mm or more, there is a problem that the dark portion generated at the uppermost end of the cover 100 becomes thicker.

The thickness of the member 410 may be 2.5 mm or more and 5 mm or less. If the thickness of the member 410 is less than 2.5 mm, the heat radiation performance is not good. If the thickness of the member 410 is larger than 5 mm, the material cost of the heat discharging body 400 increases, There is a problem to lose.

The member 410 may have an extension 413. The extension portion 413 may extend from the uppermost end of the member 410 toward the storage portion 470. The heat generated from the light source module 200 can be conducted more toward the upper end side of the member 410 by the extension part 413 so that the temperature of the light source module 200 can be rapidly lowered. Therefore, the heat radiation performance of the illumination device according to the embodiment can be further improved. Here, the length of the extended portion 413 may be 10 mm or more and 20 mm or less based on the side surface 411. If it is smaller than 10 mm, the heat radiation performance is not greatly improved. If it is larger than 20 mm, there is a problem that the power supply unit 600 and the light source unit 200 are not easily connected.

The base portion 430 is disposed below the member 410. The base portion 430 and the member 410 may be integrally formed.

A plurality of radiating fins 450 may be disposed on the outer surface of the base 430. The plurality of radiating fins 450 may protrude outward from the outer surface of the base portion 430. The plurality of heat dissipation fins 450 and the base portion 430 may be integrated or may be coupled to each other as a separate structure.

When the radiating fin 450 is divided into an upper portion and a lower portion, the upper end of the radiating fin 450 is wider as it goes from the upper end to the lower end of the base 430. When the width of the upper end of the radiating fin 450 is increased from the upper end portion to the lower end portion of the base portion 430, the rear light distribution characteristic of the illumination device according to the embodiment can be improved. This is because light emitted from the light source module 200 is not blocked by the upper end of the fins 450. This will be described in more detail with reference to FIG.

Referring to FIG. 6, the upper end of the radiating fin 450 may be formed in consideration of light emitted from the light source module 200a. Specifically, the upper end of the radiating fin 450 may be formed in consideration of the light distribution area L of the light emitted from the light source module 200a. That is, the upper end of the radiating fin 450 may be disposed below the light distribution area L of the light source module 200a. Or the upper end of the radiating fin 450 may be formed so as not to overlap with the light distribution area L of the light source module 200a.

The orientation angle of the light source module 200b and the upper end of the heat dissipation fin 450 may have the following relationship. The maximum directivity angle Z of the light emitting device 230b passes through the center of the vertical axis G and the center of the light emitting device 230b with respect to the vertical axis G passing through the center of the light emitting device 230b, And the tangent line C passing through the contact point P at the upper end of the contact portion. When the maximum directivity angle Z of the light emitting element 230b is defined as above, the illumination device according to the embodiment can improve the back light distribution characteristic. Here, the maximum directivity angle Z may be 60 degrees or more and 75 degrees or less.

In defining the maximum directivity angle Z of the light emitting device 230b, the vertical axis G may be the center of the substrate 210b rather than the center of the light emitting device 230b. That is, the vertical axis G may be a shaft passing through the hole 215b of the substrate 210b.

8 is a plan view of the heat dissipator 400 shown in Fig.

Referring to FIG. 8, the radiating fin 450 may protrude in a direction perpendicular to the outer surface of the base 430.

The thickness of the heat dissipation fin 450 may become thinner from the outer surface of the base portion 430 toward the outside. The thickness of the radiating fin 450 may be 0.8 mm or more and 3.0 mm or less.

The plurality of radiating fins 450 may be spaced apart by a predetermined interval. Here, the outermost spacing of the two radiating fins 450 may be 6 mm or more and 7 mm or less, and the innermost spacing may be 4 mm or more and 6 mm or less. If the outermost spaces and the innermost spaces of the two radiating fins 450 are different from each other, the heat radiation performance can be improved and the powder coating operation can be easily performed to the innermost side of the radiating fin 450.

The heat discharging body 400 has a receiving portion 470 for receiving the housing 500 therein. The receiving portion 470 may be a through hole passing through the member 410 of the heat discharging body 400 and the base portion 430. Hereinafter, the storage portion 470 will be replaced with a through hole. The through hole 470 may be defined as a portion surrounded by the member 410 and a portion surrounded by the base portion 430. The upper end portion of the through hole 470 is a portion surrounded by the member 410 and the lower end portion of the through hole 470 is a portion surrounded by the base portion 430. The shape of the upper end of the through hole 470 is different from the shape of the lower end of the through hole 470. Specifically, the volume of the upper end of the through hole 470 may be smaller than the volume of the lower end of the through hole 470. When the volume of the upper end of the through hole 470 is smaller than the volume of the lower end of the through hole 470, even if the housing 500 is housed in the through hole 470 of the heat discharging body 400, The housing 500 can not be separated from the upper end of the through hole 470. Further, there is an advantage that the assembling property of the lighting apparatus according to the embodiment is improved.

The heat discharging body 400 may be made of a metal material or a resin material excellent in heat radiation efficiency. The heat sink 400 may be made of a material having a high thermal conductivity (generally 150 Wm-1 K-1 or higher, and more preferably 200 Wm-1 K-1 or higher). For example, it may be copper (thermal conductivity of about 400 Wm-1 K-1), aluminum (thermal conductivity of about 250 Wm-1 K-1), anodized aluminum, aluminum alloy, magnesium alloy. Also, metal loaded plastic materials such as polymers, such as epoxy or thermally conductive ceramic materials (e.g., aluminum silicon carbide (AlSiC) (having a thermal conductivity of about 170 to 200 Wm-1K-1 ).

9 is a perspective view of only the housing shown in Fig.

Referring to FIGS. 1 to 9, the housing 500 is disposed inside the heat discharging body 400. Specifically, the housing 500 may be disposed in the through hole 470 of the heat discharging body 400.

The outer shape of the housing 500 has a shape corresponding to the shape of the through hole 470 of the heat discharging body 400 and the inside of the housing 500 has a space capable of accommodating the power supplying part 600.

The housing 500 accommodates the power supply unit 600 to protect the power supply unit 600. The housing 500 prevents the heat emitted from the heat discharging body 400 from being conducted to the power supplying part 600, thereby preventing the temperature rise of the various parts 610 of the power supplying part 600.

The housing 500 may include an upper housing 510 and a lower housing 550. The upper housing 510 and the lower housing 550 are coupled to each other to house the power supply unit 600 therein.

The upper housing 510 is disposed between the member 410 of the heat discharging body 400 and the upper end of the power supply unit 600. Since the upper housing 510 is disposed behind the light source module 200 that generates the most heat in the heat sink 400, the temperature rise of the components 610 of the power supply 600 can be reduced.

The lower housing 550 is disposed between the base portion 430 of the heat discharging body 400 and the lower end of the power supply unit 600. Silicon molding may be performed to fix the lower end of the power supply unit 600 in the lower housing 550. The lower housing 550 may be coupled to a socket 700 to which external power is applied.

The housing 500 may be made of a material having good electrical insulation and heat resistance. For example, the housing 500 may be PC (polycarbonate).

&Lt; Power supply unit 600 >

Referring to FIG. 2, the power supply unit 600 may include a support substrate 630 and a plurality of components 610 mounted on the support substrate 630. The plurality of components 610 may include, for example, a DC converter for converting an AC power supplied from an external power source into a DC power source, a driving chip for controlling driving of the light source module 200, An electrostatic discharge (ESD) protection device, and the like, but the present invention is not limited thereto.

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

100: cover
200: Light source module
300: reflector
400:
500: housing
600: Power supply
700: Socket

Claims

A cover having an opening;
A heat dissipation member including a base portion including an upper surface and a lower surface, and a member extending from the upper surface of the base portion through the opening in an inward direction of the cover and including at least one side surface;
A light source module including a substrate disposed on a side surface of the member and a light emitting element disposed on the substrate;
A socket for providing external power to the light source module;
A power supply provided between the light source module and the socket; And
And a reflector disposed on an upper surface of the member,
Wherein the heat discharging body has a through hole penetrating between a lower surface of the base portion and an upper surface of the member,
Wherein the power supply unit is disposed in the through hole,
A side surface of the member is perpendicular to an upper surface of the base portion,
Wherein the member is a polygonal columnar shape having a plurality of the side surfaces,
The number of side surfaces of the member is equal to or greater than the number of the light source modules,
Wherein the light source module includes at least two metal members which are disposed on at least two sides of the member and electrically connect the light source modules.

The method according to claim 1,
Wherein the power supply portion includes an upper portion disposed inside the member and a lower portion disposed inside the base portion.

The method according to claim 1,
And a housing in which the power supply unit is disposed.

The method of claim 3,
The housing includes an upper housing and a lower housing,
Wherein the power supply unit includes an upper end portion and a lower end portion,
Wherein the upper housing is disposed between the member and the upper end of the power providing portion,
And the lower housing is disposed between the base portion and the lower end of the power providing portion.

The method according to claim 1,
Wherein the member is integral with the base portion.

The method according to claim 1,
And the diameter of the through-hole at the lower surface of the base portion is larger than the diameter of the through-hole at the upper surface of the member.

The method according to claim 1,
Wherein the through hole includes a first portion surrounded by the member and a second portion surrounded by the base portion,
The shape of the first portion and the shape of the second portion are different,
Wherein the volume of the first portion is smaller than the volume of the second portion.

A cover having an opening;
A heat dissipating member including a base and a member extending from the upper surface of the base through the opening of the cover into the cover, the member including at least one side surface;
A light source module including a substrate disposed on a side surface of the member and a light emitting element disposed on the substrate; And
A reflector coupled to the member and including a first portion disposed on an upper surface of the member,
Wherein the base portion and the member are integrally formed,
The first portion of the reflector including an upper surface and a lower surface parallel to an upper surface of the member and a side surface disposed between an upper surface of the first portion and a lower surface of the first portion,
A side surface of the member is perpendicular to an upper surface of the base portion,
The reflector including a second portion extending downward from the base portion in the first portion,
Wherein the heat discharging body has a through hole penetrating between a lower surface of the base portion and an upper surface of the member,
And a power supply unit disposed in the through hole.

delete

9. The method of claim 8,
And the second portion is a plurality.

9. The method of claim 8,
And the side of the first portion is a curved surface.

9. The method of claim 8,
The minimum length from the upper surface of the first portion of the reflector to the uppermost end of the cover is 15 mm or more.

9. The method of claim 8,
A second portion of the reflector is disposed on a side of the member,
And the second portion has a placement groove in which the light source module is disposed.

delete

9. The method of claim 8,
Wherein the member includes an extension extending from the member to the through hole.

The method according to claim 1 or 8,
Wherein the reflector is made of white polycarbonate (PC).

The method according to claim 1 or 8,
Wherein the reflector is made of an electrically insulating material.

The method according to claim 1 or 8,
Wherein the surface of the reflector is surface treated to scatter light from the light source module.

The method according to claim 1 or 8,
Wherein the angle between the side surface of the member and the central axis is 0.3 degrees or more and 3 degrees or less.

The method according to claim 1 or 8,
Wherein the thickness of the member is not less than 2.5 mm and not more than 5 mm.

The method according to claim 1 or 8,
A plurality of the light emitting elements are disposed on one surface of the substrate,
Wherein the light emitting device is a light emitting diode chip that emits red, green, or blue light, or a light emitting diode chip that emits ultraviolet light.

The method according to claim 1 or 8,
Wherein the light source module further comprises a lens covering the light emitting element,
Wherein the lens comprises a phosphor.

The method according to claim 1 or 8,
Wherein the substrate includes a top surface on which the light emitting element is disposed and a bottom surface disposed on a side surface of the member,
Wherein an area of a side surface of the member is wider than an area of a bottom surface of the substrate,
Wherein the substrate is not disposed at a central portion of a side surface of the member.

9. The method of claim 8,
Wherein the member is a polygonal columnar shape having a plurality of the side surfaces,
Wherein the number of side surfaces of the member is equal to or greater than the number of the light source modules.

25. The method of claim 24,
Wherein the light source module is disposed on at least two of side faces of the member,
And a metal member electrically connecting each of the light source modules.

26. The method of claim 1 or 25,
Wherein the metal member is bent corresponding to the shape of the member.

The method according to claim 1 or 8,
Wherein the heat discharging body includes a heat radiating fin disposed on an outer surface of the base portion,
Wherein an upper end of the radiating fin is wider from an upper end to a lower end of the base.

28. The method of claim 27,
And an upper end of the radiating fin is disposed below the light distribution area of the light source module.

28. The method of claim 27,
Wherein the thickness of the radiating fin is thinned from the outer surface of the base portion toward the outer side.

28. The method of claim 27,
Wherein the thickness of the radiating fin is 0.8 mm or more and 3.0 mm or less.

28. The method of claim 27,
Wherein the heat radiating fins are provided in plural,
Wherein the two radiating fins of the plurality of radiating fins are spaced apart by a predetermined interval and the outermost spacing between the two radiating fins is greater than the innermost spacing between the two radiating fins.

28. The method of claim 27,
Wherein the radiating fin is powder coated.