KR20160112286A - Omnidirectional LED illumination device - Google Patents

Omnidirectional LED illumination device Download PDF

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Publication number
KR20160112286A
KR20160112286A KR1020150037649A KR20150037649A KR20160112286A KR 20160112286 A KR20160112286 A KR 20160112286A KR 1020150037649 A KR1020150037649 A KR 1020150037649A KR 20150037649 A KR20150037649 A KR 20150037649A KR 20160112286 A KR20160112286 A KR 20160112286A
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KR
South Korea
Prior art keywords
heat sink
led
diffusion cover
converter
diffusion
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Application number
KR1020150037649A
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Korean (ko)
Other versions
KR101666389B1 (en
Inventor
강기태
양승혁
Original Assignee
주식회사 내셔날스테이트코리아
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Priority to KR1020150037649A priority Critical patent/KR101666389B1/en
Publication of KR20160112286A publication Critical patent/KR20160112286A/en
Application granted granted Critical
Publication of KR101666389B1 publication Critical patent/KR101666389B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21Y2101/02—
    • Y02B20/34—

Abstract

The present invention relates to an omnidirectional LED illumination device capable of having light distribution patterns effective in all the directions. The omnidirectional LED illumination device has a structure comprising: a converter body the bottom of which is coupled to a socket and in which a power PCB is accommodated; a heat sink installed while wrapping an outer circumferential surface of the converter body; an LED substrate installed at the outer circumferential edge of an upper end of the heat sink and having multiple LED elements on the surface thereof; a diffusion cover for diffusing lights of the LED elements to the outside by having an upper surface which closes an open upper part of the heat sink and is connected to an upper end of the converter body, and a side surface which extends from the outside of the upper surface to a lower part and is installed facing the LED substrate; and a cover having an inner space with a predetermined size to allow an inner circumferential surface thereof to be spaced from the heat sink including a diffusion cover, wherein the heat sink including the diffusion cover is inserted through an open bottom surface of a lower part, and the lower part is fixed to an outer circumferential edge of the heat sink.

Description

[0001] The present invention relates to an omnidirectional LED illumination device,

The present invention relates to an illumination device using LED, and more particularly, to an omni-directional LED illumination device capable of having an effective light distribution pattern in all directions.

LED is a light emitting diode that emits light from a semiconductor light emitting diode (LED), which converts an electrical signal into light using the characteristics of a semiconductor made of materials such as Ga (gallium), P (phosphorus), and As to be.

Such an LED device has advantages of low power consumption and low power consumption, and is excellent in response speed and impact resistance, and can be made compact and lightweight. Also, depending on the type and composition of the semiconductor used, light of different wavelengths can be generated, and light of various wavelengths can be used.

In recent years, an LED lighting device using an LED device has been widely used instead of an incandescent lamp. A prior art related thereto has been disclosed in Korean Patent No. 10-0920019, "Diffused LED lighting device ".

On the other hand, in the case of the LED device used in the LED illumination device, the LED device does not emit light in all directions at 360 degrees, but differs greatly in light distribution characteristics from the conventional incandescent lamp.

For example, an LED device emits the most amount of light in the forward 0 degree direction, and as the angle increases, the amount of light emission decreases and becomes almost zero at about ± 90 degrees.

On the other hand, a general incandescent lamp maintains a constant amount of light emission with almost no reduction from about 0 to about 130 degrees. As a result, the irradiation angle half width of the LED illumination device is approximately 130 degrees, whereas the irradiation angle half width of a general incandescent lamp is approximately 260 degrees.

This difference arises because the filament used in a typical incandescent lamp emits light in all directions 360 degrees, whereas the LED device emits light in about 120 degrees forward. Accordingly, when the lighting device is constructed using the LED device, there is a problem that the user feels inconvenience in using the lighting device because he or she is significantly different from the conventional light distribution or lighting feeling familiar to the user.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light distribution pattern of an illuminating device provided with an LED element and to provide an omnidirectional LED illumination device.

According to a preferred embodiment of the present invention, there is provided a power converter comprising: a converter body having a socket connected to a lower end thereof and receiving a power PCB therein; a heat sink wrapped around an outer circumference of the converter body; And an upper surface of the LED substrate is connected to an upper end of the converter body while closing an opened upper portion of the heat sink, and a side surface extending downward from the outer surface of the upper surface is installed to face the LED substrate, The heat sink including the diffusion cover is inserted through the diffusion cover for diffusing the light of the device to the outside and the bottom surface of the opened lower portion so that the lower portion of the heat sink is fixed to the outer circumference of the heat sink and the inner circumferential surface is separated from the heat sink including the diffusion cover The cover having a predetermined size of inner space.

More preferably, the converter body includes a converter case to which a socket is coupled at a lower end and a converter upper to which a diffusion cover is coupled through a screw at an upper end, and a lower end of the converter upper is coupled to the upper end of the converter case through a fastener.

More preferably, the heat sink is fixed to the outer circumferential surface of the converter case, the upper portion of the heat sink is fixed to the outer circumferential surface of the converter upper portion, and the connecting portion extending from the lower portion to the upper portion of the heat sink is formed with a stepped portion inside, Side portion is formed to protrude upward facing the outer circumferential surface of the upper portion of the heat sink.

More preferably, the diffusion cover is formed so as to be in contact with the side surface of the LED substrate, and a part of the side surface of the diffusion cover is spaced from the front surface of the LED element so that the projection protrudes outwardly in a range in which the angle of irradiation of the LED element can be accommodated.

More preferably, the diffusion cover is configured such that any one of the protrusions is assembled horizontally in the upper and lower halves.

More preferably, the protruding portion of the diffusion cover has a central portion which is to be brought into contact with an imaginary line extending horizontally from the center of the LED element. The center portion of the diffusion cover is a vertex, and the upper portion and the lower portion, The curvatures are formed as arcs with different asymmetries.

More preferably, the protruding portion of the diffusion cover has a central portion which is to be brought into contact with an imaginary line extending horizontally from the center of the LED element, and the central portion of the diffusion cover is a vertex, and the upper portion and the lower portion are symmetric or asymmetric And a polygon.

More preferably, the protruding portion of the diffusion cover has a center portion that meets an imaginary line extending horizontally from the center of the LED element. The center portion is a vertex, and one of the upper portion and the lower portion, And the other is composed of polygons.

More preferably, the projection of the diffusion cover is provided with one or more diffusion projections or diffusion grooves on either the inner or outer surface.

More preferably, the projection of the diffusion cover is provided with one or more diffusion projections or diffusion grooves on both inner and outer surfaces thereof.

The light distribution pattern of the light emitting device can be approximated to the light distribution pattern of the incandescent lamp as the light emitted from the LED device is effectively diffused through the diffusion cover surrounding the LED device to improve the performance of the lighting device by maximizing the light distribution efficiency, The effective and simple assembly structure of each component has the effect of improving the productivity as well as the maintenance and management efficiency.

In addition, since the effect of the present invention described above is expected to be exerted by the composition of the contents regardless of whether or not the inventor perceives it, the effect described above is only some effects according to the contents described, Should not be recognized.

Further, the effect of the present invention should be grasped further by the entire description of the specification, and even if it is not stated in an explicit sentence, a person having ordinary skill in the art to which the written description belongs, It should be seen as an effect described in this specification.

1 is a perspective view illustrating an LED illumination device according to an embodiment of the present invention.
2 is an exploded perspective view illustrating an LED illumination device according to an embodiment of the present invention.
3 is a cutaway perspective view of an LED illumination apparatus according to an embodiment of the present invention.
4 is a front cross-sectional view of an LED illumination device according to an embodiment of the present invention.
5 is a sectional view taken along line AA in Fig.
6 is a comparative diagram showing a light distribution pattern of an LED illumination device according to an embodiment of the present invention compared with a general incandescent lamp.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the scope of the present invention being indicated by the appended claims rather than by the foregoing description.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the structure and operation of the contents described may vary depending on the intention or custom of the user or the operator And the definitions of these terms should be based on the contents throughout this specification.

The omnidirectional LED lighting device according to the present invention includes a converter body having a socket and a power PCB, a heat sink connected to the outside of the converter body, a LED substrate mounted on an upper portion of the heat sink, And a cover having an inner space such that the diffusion cover is coupled to the heat sink and is accommodated therein. Hereinafter, the components will be described with reference to the drawings exemplified below. same.

The converter body (100)

And has a predetermined size such that a power PCB 600 such as a Switching Mode Power Supply (SMPS) that supplies power to the LED device 310 can be accommodated.

A socket 700 for connection with a power source is coupled to a lower end of the converter body 100, and a socket 700 is electrically connected to a power PCB 600.

The converter body 100 may have a cylindrical shape with a predetermined length in the up-and-down direction. The outer shape of the converter body 100 may be deformed into various shapes having a predetermined- .

The converter body 100 may be formed as a single unit or a plurality of components may be assembled to each other. In a case where the converter body 100 is assembled, as shown in FIGS. 2 and 3, the lower converter case 120 and the upper converter upper And a lower end of the converter upper 110 may be assembled to the upper end of the converter case 120 through a fastener 130. [

A flange portion 111 having a fastening hole 112 is formed at the lower end of the converter upper 110 and a converter housing 120 is provided at the upper end of the upper portion of the converter case 120 facing the lower end of the converter upper 110, A flange portion 111 of the upper flange 111 is mounted on the flange portion 111 and the flange portion 111 of the flange portion 111 is aligned with the flange portion 112 of the flange portion 111, The converter case 120 and the converter upper 110 can be coupled to each other through the fastener 130 fastened to the upper case 130.

 The converter case 120 and the converter upper 110 need not be limited to the coupling type through the fastener 130 described above. Although not shown in the drawings, the coupling case 120 and the coupling upper 110 may be combined by a hook- Or a coupling type in which the upper end of the converter case 120 and the lower end of the converter upper 110 are screwed together.

The heat sink (200)

The heat sink 200 is formed into a cylindrical shape having a space therein without using the converter body 100 as described above to dissipate heat generated from the LED device 310 to the outside, And a socket 700 connected to the power PCB 600 may be coupled to the lower end of the converter body 100. It is preferable that the socket body 700 is formed in a cylindrical shape having a predetermined length, ≪ / RTI >

2 and 3, the inner circumference of the lower portion 230 of the heat sink 200 is coupled to the outer circumference of the converter case 120 and is connected to the heat sink 200. In the heat sink 200, 200 may be coupled to the outer periphery of the converter upper 110 and coupled thereto.

The connecting portion 220 between the lower portion 230 of the heat sink 200 and the upper portion 210 of the heat sink 200 is bent into the inside and stays in the flange portion 111 of the converter upper portion 110, A protrusion 221 extending from the lower portion 230 of the heat sink 200 is formed on the outer side of the heat sink 220 so as to face the surface of the upper portion 210 of the heat sink 200.

An outer edge of the upper end 210 of the heat sink 200 is connected to an LED substrate 300, which will be described later, on which a plurality of LED elements 310 are mounted.

Here, the outer periphery of the upper end of the heat sink 200 is vertical, and the LED substrate 300 mounted on the outer periphery of the heat sink 200 and the LED element 310 mounted on the LED substrate 300 are also in a vertical state.

The heat sink 200 may be provided with a plurality of heat radiating fins on its outer periphery as required or may be formed continuously in a plurality of steps in a stepped shape for heat radiation around the outer periphery.

In the LED substrate 300,

The heat sink 200 may be configured so as to be wrapped around the outer periphery of the upper end of the upper end 210 of the heat sink 200 and correspond to the shape of the outer periphery of the upper end 210 of the heat sink 200, 2, the LED substrate 300 is also formed in the shape of a hexagon.

One or more LED elements 310 are mounted on the surface of the LED substrate 300, and the array and the number of the LED elements 310 mounted on the LED substrate 300 may be variously changed according to the specifications of the lighting apparatus.

Terminal portions (not shown) are formed on either side of the LED substrate 300 and are electrically connected to the power PCB 600 described above.

The LED substrate 300 may be formed of a flexible PCB having flexibility as required. When the LED substrate 300 is formed of a flexible PCB and has a degree of freedom in shape, the shape of the upper end of the heat sink The heat sink 200 can be manufactured with ease and the light distribution pattern can be variously configured by effectively arranging the LED elements 310. [

3 and 4, when the LED substrate 300 is coupled to the outer periphery of the upper end 210 of the heat sink 200, the LED substrate 300 is embedded in the upper portion 210 of the heat sink 200, And the lower end of the LED substrate 300 may be seated and fixed to the step 211. In this case,

The diffusion cover (400)

The light emitted from the LED element 310 of the LED substrate 300 is diffused to the outside.

In an embodiment of the diffuser cover 400, the bottom surface is open, as illustrated in FIGS. 2-4, and includes a closed top surface 410 and a side surface 420 that extends vertically downwardly from such top surface 410 It has a shape like a cap.

The upper surface 410 of the diffusion cover 400 closes the open top of the heat sink 200 when the diffusion cover 400 is inserted into the upper portion of the above described heat sink 200 using the opened bottom surface, And is located on the surface of the LED substrate 300 described above.

The diffusion cover 400 forms a screw hole 411 at the center of the upper surface 410 and protrudes upwards from the upper surface 410 of the converter upper 110 to coincide with the screw hole 411 of the diffusion cover 400. [ It is possible to prevent the diffusion cover 400 from being separated from the top of the heat sink 200 through the screw 500 which is fastened to the screw hole 411 and the screw groove 113 have.

The side surface 420 of the diffusion cover 400 may have a vertical shape and may be spaced apart from the LED substrate 300 by a predetermined distance. A portion of the side surface 420 opposed to the LED element 310 may protrude outward so that an inner portion of the side surface 420 may be spaced apart from the LED element 310 by a predetermined distance while being in contact with the LED substrate 300 .

The protrusion 430 formed on the side surface of the diffusion cover 400 has a predetermined width in the vertical direction so as to include the angle of irradiation of the LED element 310 mounted on the LED substrate 300.

As shown in FIGS. 3 and 4, the protrusion 430 of the diffusion cover 400 has an arcuate shape such as a semi-ellipse when viewed in cross section, and a point extending horizontally from the center of the LED element 310 corresponds to a long axis of the ellipse It becomes a vertex.

The projecting portion 430 of the diffusion cover 400 may be formed as a single body through a molding method such as blow molding, or may be a vertically divided assembly form as shown in FIG. 3 and FIG.

In the case where the protrusions 430 are formed in an assembled configuration, the protrusions 430 can be assembled to each other in the up-and-down direction horizontally with the center portion 432 forming the vertex as a center, The upper portion 431 and the lower portion 433 may be divided into an upper portion 431 and a lower portion 433 which are located at the center of the central portion 432 and the upper portion of the central portion 432, respectively.

The lower surface of the upper portion 431 and the upper surface of the lower portion 433 may be in contact with each other in a horizontal state so that the contact portions of the upper portion 431 and the lower portion 433 are in contact with each other, May be coupled to each other in a concave-convex form, or may be combined in an opposed-stepped manner staggered with each other.

The inner and outer surface thicknesses of the protrusion 430 including the central portion 432 and the upper portion 431 and the lower portion 433 may be the same or different from each other.

The protrusion 430 includes a central portion 432 at a vertex so that the upper portion 431 and the lower portion 433 are formed into an arcuate shape so that the curvature of the upper portion 431 and the curvature of the lower portion 433 are different from each other, Symmetrical with respect to each other, or asymmetric with respect to each other.

The protruding portion 430 includes a central portion 432 which is a vertex so that the upper portion 431 and the lower portion 433 are generally polygonal while the upper portion 431 and the lower portion 433 are symmetrical with respect to the center portion 432 Or may be asymmetric.

The protruding portion 430 includes a central portion 432 which is a vertex so that the upper portion 431 is arc-shaped and the lower portion 433 is polygonal or the upper portion 431 is polygonal and the lower portion 433 is arc- .

Although not illustrated in the drawing, one or more convex diffusion projections or one or more concave diffusion grooves may be provided on the inner or outer surface of the protrusion 430 in order to scatter light generated from the LED element 310, One or more diffusion protrusions may be formed on both the inner and outer surfaces, or one or more diffusion grooves may be provided.

The cover 800,

The upper portion 210 of the heat sink 200, the LED substrate 300, and the diffusion cover 400 may be coupled to the outer periphery of the heat sink 200, as shown in FIGS. 1 to 5, .

Although the cover 800 is illustrated as a sphere having a predetermined space in the illustrated example, the shape of the cover 800 may be variously configured, and the LED 800 mounted on the LED substrate 300 And compensates for the straightness of the light emitted from the light source 310 and diffuses the light at various angles.

The material of the cover 800 may be transparent or semitransparent glass or resin, and the material of the cover 800 may be variously modified in consideration of light transmittance and diffusibility.

An embodiment of the combination of the cover 800 and the heat sink 200 will be described with reference to FIGS. 3 and 4. FIG.

It is preferable that the lower end of the cover 800 is coupled to the inner circumference of the protrusion 221 formed on the outer side of the connection portion 220 of the heat sink 200 in the open state, 221 may be formed by forming a female screw part and a male screw part on the outer peripheral edge of the lower end of the cover 800 and screwing the male screw part and the male screw part in the outer peripheral edge of the lower end of the cover 800, The outer peripheral edge of the lower end of the cover 800 and the protruding portion 221 may be coupled to each other in a coupling manner using protrusions and protruding grooves.

In the omnidirectional LED lighting device thus constructed, light generated from the LED device 310 mounted on the LED substrate 300 is diffused through the diffusion cover 400, so that an effective omni-directional light distribution pattern And it can be approximated to a light distribution pattern such as an incandescent lamp using a general filament, thereby enhancing the efficiency of light distribution and further including a technical idea capable of doubling the utilization efficiency of the user.

Although the present invention has been fully described by way of example with reference to the accompanying drawings, it is to be noted that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of the disclosed contents should not be limited to the described embodiments, but should be determined by the appended claims and equivalents thereof.

100: converter body 110: converter upper
111: flange portion 112: fastening hole
113: screw groove 120: converter case
121: fastening groove 200: heat sink
210: upper portion 211:
220: connection part 221:
230: lower 300: LED substrate
310: LED element 400: diffusion cover
410: top surface 420: side surface
430: protruding portion 431:
432: center portion 433:
500: Screw 600: Power PCB
700: Socket 800: Cover

Claims (10)

A converter body to which a socket is connected at the lower end and a power PCB is accommodated therein;
A heat sink enclosing the outer circumference of the converter body;
An LED substrate mounted on an outer periphery of an upper end of the heat sink and having a plurality of LED elements mounted on a surface thereof;
An upper surface of the heat sink is coupled to an upper end of the converter body while closing an open upper portion of the heat sink. A side surface of the upper surface extending downward from the outer surface of the heat sink is installed to face the LED substrate, Giving spread cover; And
The lower portion of the heat sink including the diffusion cover is fixed to the outer periphery of the heat sink through the bottom of the opened lower portion and the inner periphery of the heat sink is spaced apart from the heat sink including the diffusion cover And a cover having an inner space is included in the omnidirectional LED illumination device.
The method according to claim 1,
The converter body includes:
A converter case to which the socket is coupled at a lower end; And
And a converter upper in which the diffusion cover is coupled through a screw,
And the lower end of the converter upper is coupled to the upper end of the converter case through a fastener.
3. The method of claim 2,
Wherein a bottom portion of the heat sink is fixed to an outer circumferential surface of the converter case, an upper portion of the heat sink is fixed to an outer circumferential surface of the converter upper portion, a connecting portion extending from a lower portion to a top portion of the heat sink is formed with an inward step, And the outer portion of the connection portion is formed to protrude upward facing the outer circumferential surface of the heat sink.
The method according to claim 1,
The diffusion cover is formed so that its side surface is in contact with the LED substrate and a part of the side surface of the diffusion cover is separated from the front surface of the LED element so that the protrusion is protruded outward in a range in which the irradiation angle of the LED element can be accommodated And a light source for emitting the omni-directional light.
5. The method of claim 4,
Wherein the diffusion cover is configured such that any one of the protrusions is horizontally vertically divided into two parts.
The method according to claim 4 or 5,
The projecting portion of the diffusion cover
A central portion of the center portion is a vertex, and the upper portion and the lower portion of the center portion are symmetrical with respect to the curvature or curvature different from each other Wherein the light emitting diode is formed in an arc shape.
The method according to claim 4 or 5,
The projecting portion of the diffusion cover
A center portion of the center of the LED element is aligned with a virtual line extending horizontally from the center of the LED element. The central portion is a vertex, and the upper portion and the lower portion are symmetrical or asymmetrical with respect to the central portion, The omni-directional LED illumination device.
5. The method according to claim 4 or 5,
The projecting portion of the diffusion cover
When the center portion of the LED element becomes a central portion and the upper portion and the lower portion are formed in arc shapes with respect to the center portion, And a polygon.
The method according to claim 4 or 5,
The projecting portion of the diffusion cover
Wherein one or more diffusion projections or diffusion grooves are provided on one of the inner and outer surfaces of the omnidirectional light source.
The method according to claim 4 or 5,
The projecting portion of the diffusion cover
Wherein at least one diffusion projection or diffusion groove is provided on both the inner and outer surfaces.
KR1020150037649A 2015-03-18 2015-03-18 Omnidirectional LED illumination device KR101666389B1 (en)

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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090072768A (en) * 2007-12-28 2009-07-02 (주)아이씨에프 Led lamp module and assembly using light emitting diode module
JP2011146253A (en) * 2010-01-14 2011-07-28 Toshiba Lighting & Technology Corp Light bulb-shaped lamp and lighting fixture
US20120075854A1 (en) * 2010-09-28 2012-03-29 Lighting Science Group Corporation Led luminaire
KR20130128623A (en) * 2012-05-17 2013-11-27 엘지전자 주식회사 Lighting apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090072768A (en) * 2007-12-28 2009-07-02 (주)아이씨에프 Led lamp module and assembly using light emitting diode module
JP2011146253A (en) * 2010-01-14 2011-07-28 Toshiba Lighting & Technology Corp Light bulb-shaped lamp and lighting fixture
US20120075854A1 (en) * 2010-09-28 2012-03-29 Lighting Science Group Corporation Led luminaire
KR20130128623A (en) * 2012-05-17 2013-11-27 엘지전자 주식회사 Lighting apparatus

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