KR20140106998A - LED Lighting Device - Google Patents

LED Lighting Device Download PDF

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Publication number
KR20140106998A
KR20140106998A KR1020130021431A KR20130021431A KR20140106998A KR 20140106998 A KR20140106998 A KR 20140106998A KR 1020130021431 A KR1020130021431 A KR 1020130021431A KR 20130021431 A KR20130021431 A KR 20130021431A KR 20140106998 A KR20140106998 A KR 20140106998A
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KR
South Korea
Prior art keywords
light source
unit
hole
protrusion
shape
Prior art date
Application number
KR1020130021431A
Other languages
Korean (ko)
Inventor
박태관
Original Assignee
서울반도체 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 서울반도체 주식회사 filed Critical 서울반도체 주식회사
Priority to KR1020130021431A priority Critical patent/KR20140106998A/en
Publication of KR20140106998A publication Critical patent/KR20140106998A/en

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Classifications

    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • 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
    • 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 an LED lighting device which includes a light source part which includes an LED, and a substrate part which the LED is mounted on and has a groove on a lower surface or a through hole; a heat radiation part which provides a light source region where the light source part is arranged in an upper part; and a protrusion part which protrudes from the light source region or is inserted into the groove or the through hole to transmit heat generated from the light source part to the heat radiation part. The heat of the light source part is effectively discharged to the heat radiation part by the medium of the protrusion part. In addition, the assemble convenience of the light source part is improved.

Description

LED Lighting Device}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lighting apparatus, and more particularly, to an LED lighting apparatus in which heat of a light source unit is effectively discharged to a heat dissipation unit and assembly convenience of a light source unit is improved.

In general, the lighting apparatuses include incandescent lamps, fluorescent lamps, halogen lamps, and the like depending on the type of the light source. In recent years, LED lighting apparatuses that replace the light source of a conventional lighting apparatus with LEDs (Light Emitting Diodes) are widely used.

An example of the LED lighting apparatus is the LED lighting apparatus disclosed in Korean Patent Publication No. 10-2011-0140007.

The conventional LED lighting fixture including the above-mentioned patent discloses a heat dissipation unit in which a light source unit and a light source unit are disposed to emit heat generated from a light source unit, and a lens unit provided in an opening formed in the heat release unit.

Here, the light source portion includes an LED and a substrate portion on which the LED is mounted. The base portion is formed with a through hole for mounting the light source portion to the heat dissipating portion, and the light source portion is mounted to the heat dissipating portion while the bolt is inserted through the through hole.

As described above, the conventional LED lighting apparatus uses a bolt to mount the light source unit to the heat dissipation unit. In this case, the bolt is generally made of a material having lower heat conductivity than the heat dissipation unit material (for example, aluminum).

Further, when the bolt is inserted into the through hole formed in the base portion, the contact surface between the bolt and the through hole portion is not wide. Only the edge of the bolt head is generally in contact with the upper surface of the substrate portion.

On the other hand, in relation to the lifetime of the LED lighting apparatus, how efficiently the heat generated from the light source is emitted is a very important problem. If the heat of the light source part is not efficiently discharged, the heat stays inside the LED module, thereby damaging and deforming the LED and the substrate, and shortening the lifetime of the LED lighting fixture.

As described above, the conventional LED lighting apparatus uses a bolt that is made of a material having low thermal conductivity and is fastened to the light source unit so that the contact area with the light source unit is not wide. Therefore, in the conventional LED lighting apparatus, the degree of heat generated in the light source unit is transmitted to the heat dissipation unit via the bolt. Accordingly, in order to further improve the durability of the LED lighting apparatus, it is necessary to provide a structure capable of further improving the heat radiation efficiency in a specific structural part in which the light source unit is mounted on the heat radiation unit.

In addition, in the conventional LED lighting fixture, in attaching the light source portion to the heat dissipation portion, a process of inserting the bolt into the through hole is accompanied. In this case, when an opening is formed in the heat dissipating unit such as the LED lighting apparatus disclosed in the above-mentioned patent and the bolt is to be fastened while the light source unit is housed in the opening, the bolt is pulled and fastened in a narrow opening space Bolt fastening work is not inconvenient. Therefore, the conventional LED lighting apparatus needs to be improved in operability even in the assembling process of mounting the light source unit to the heat dissipating unit.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an LED lighting apparatus in which heat transfer efficiency from a light source unit to a heat dissipation unit is improved and an operation of mounting a light source unit in a heat dissipation unit can be easily performed .

The LED lighting apparatus according to an embodiment of the present invention includes a light source unit including LEDs, a substrate unit on which the LEDs are mounted, grooves formed on the bottom surface thereof or through holes formed therein, a heat radiating unit And protrusions protruding from the light source region and inserted into the grooves or the through holes to allow the heat generated in the light source unit to be transmitted to the heat dissipation unit.

In the LED lighting apparatus according to the embodiment of the present invention, the projecting portion may be integrally formed of the same material as the heat dissipating portion.

In the LED lighting apparatus according to the embodiment of the present invention, the grooves or the through holes are formed in at least two or more places of the substrate portion, and the protrusions are formed at positions corresponding to the grooves or the through holes on the light source region .

In the LED lighting apparatus according to the embodiment of the present invention, the grooves or the through holes may be formed at equal intervals on a virtual circumference on the substrate portion.

In the LED lighting apparatus according to the embodiment of the present invention, the grooves or the through holes and the protrusions may be formed in a shape corresponding to each other such that the inner surfaces of the grooves or the through holes and the outer surface of the protrusions are in contact with each other have.

In the LED lighting apparatus according to the embodiment of the present invention, the protruding portion may have any one of a cylindrical shape, a polygonal columnar shape, a conical shape with a vertex facing upward, a polygonal pyramid or a hemispherical shape.

In the LED lighting apparatus according to the embodiment of the present invention, a nut or a cap may be coupled to the upper end of the protrusion inserted into the through hole and protruding upward from the light source unit.

In the LED lighting apparatus according to the embodiment of the present invention, the protrusions may be formed in a linear shape, a curved shape, a curved shape, or a zigzag shape on the light source area.

In the LED lighting apparatus according to an embodiment of the present invention, the upper end of the protruding portion may be a wedge-shaped clip portion which is elastically deformed, and may be engaged with the substrate portion through the through hole.

The LED lighting apparatus according to an embodiment of the present invention may further include a light source lid portion coupled to the upper side of the heat dissipating portion to cover the light source portion and a support portion for pressing the upper surface of the base portion may be formed on a bottom surface of the light source lid portion .

According to the present invention, since the projecting portion is formed integrally with the heat dissipating portion as the same material as the heat dissipating portion material having excellent thermal conductivity, heat transfer efficiency from the light source portion to the heat dissipating portion is improved through the projecting portion.

Also, the light source unit is easily attached to the heat dissipating unit by the process of inserting the protruding unit into the through hole or the groove of the substrate, so that the convenience of the operation in the assembling process of the light source unit is improved.

1 is an exploded perspective view of an LED lighting apparatus according to an embodiment of the present invention,
Fig. 2 is a perspective view of the heat dissipation unit shown in Fig. 1,
FIG. 3 is a perspective view illustrating an assembled state of the heat dissipation unit and the light source unit shown in FIG. 1;
Fig. 4 is a perspective view of a heat dissipation unit showing another example of the protrusion shown in Fig. 2,
Fig. 5 is a sectional view of the main part showing another example of the protrusion shown in Fig. 2,
6 is a cross-sectional view of the main part showing a state in which the light source unit is supported by the support part of the lens unit shown in FIG.

Hereinafter, an LED lighting apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of an LED lighting apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of the heat dissipating unit shown in FIG. 1, and FIG. 3 is a perspective view showing an assembled state of the heat dissipating unit and the light unit shown in FIG.

The LED lighting apparatus 1 according to an embodiment of the present invention may include a light source unit 200, a heat sink unit 300 and a protrusion 330 protruding from the light source area 312 have.

The light source unit 200 may include a light emitting diode (LED) 210 and a substrate unit 220, wherein the LED 210 is a light source that emits light. The LED 210 is mounted on the substrate 220 to form an LED module. The light source 200 including the LED module is mounted on a heat dissipating unit 300 described later.

The heat dissipation unit 300 rapidly discharges heat generated in the light source unit 200 into the atmosphere, and may be formed of a material having excellent thermal conductivity, such as aluminum.

The heat dissipating unit 300 may include a heat dissipating body 320 and a receiving unit 310 as a specific example. The heat dissipation body 320 may have a shape having a large surface area as shown in the figure so as to increase the heat radiation performance.

On the upper side of the heat dissipating body 320, a light source region 312 in which the light source unit 200 described above is disposed is provided. In the illustrated example, the receiving portion 310 is formed on the upper side of the heat dissipating body 320, and the receiving portion 310 has the receiving space 311 opened upward. In this case, the inner bottom surface of the accommodating portion 310 may be the light source region 312 in which the light source portion 200 is disposed.

However, the light source region 312 is not limited to the bottom of the accommodating portion 310 shown in FIG. Although not shown, the upper side of the heat dissipating body 320, which is the light source region 312, may be formed as needed, for example, the upper side of the heat dissipating body 320 may be simply planar, It goes without saying that it can have various shapes.

In the illustrated example, the light source unit 200 is disposed on the inner bottom surface of the receiving unit 310. At this time, a heat sink grease or the like is provided on the inner bottom surface of the receiving unit 310 so that heat generated from the light source unit 200 can be smoothly discharged. A thermally conductive adhesive layer (not shown) such as silicon or a heat dissipation tape may be formed.

The LED lighting apparatus 1 according to the present embodiment is configured such that the light source unit 200 is restrained from moving or rotating in the lateral direction in a state where the light source unit 200 is disposed in the accommodating unit 310, And a protrusion 330 protruding from the light source region 312 to effectively transmit the light to the heat dissipating unit 300.

The protrusion 330 protrudes upward in the light source region 312. At this time, the protrusion 330 may be formed of the same material as the heat-dissipating body 320 and may be integrally formed with the heat-dissipating body 320. The substrate portion 220 may have a through hole 221 through which the protrusion 330 is inserted.

The protrusion 330 is an example of a specific shape and may have a cylindrical shape as shown in the illustrated example and the substrate portion 220 may be formed with a circular through hole 221 into which the protrusion 330 is inserted. The outer diameter of the protrusion 330 and the inner diameter of the through hole 221 can be designed such that the contact area between the outer surface of the protrusion 330 inserted into the through hole 221 and the inner surface of the through hole 221 is maximized have. In other words, the shape of the protrusion 330 and the through-hole 221 may be formed to correspond to each other.

However, the protrusion 330 and the through hole 221 are not limited to the above-described shapes. The protrusion may be a polygonal prism, but may be a cone, a polygonal pyramid, a hemisphere, or the like having a vertex facing upward. In this case, the through hole may also be formed in a shape corresponding to the shape of the protrusion.

On the other hand, the through holes 221 may be formed in one place on the substrate portion 220, or may be formed in two places as shown in the illustrated example. The protrusion 330 may also be formed at two positions on the light source region 312 corresponding to the position of the through hole 221 when the through hole 221 is formed in two places on the substrate portion 220. [

Alternatively, the through holes 221 may be formed at three or more positions on the substrate portion 220, and the protrusions 330 may also be formed at three or more positions on the light source region 312 corresponding to the through holes 221 have.

The plurality of through holes 221 may be formed at equal intervals on a virtual circumference on the substrate portion 220. The protrusions 330 may be formed at positions corresponding to the through holes 221 And may be spaced equidistantly on a virtual circumference on the light source region 312.

When the light source unit 200 is disposed in the light source area 312, the protrusions 330 are inserted through the through holes 221 of the substrate unit 220 so that the heat generated from the light source unit 200 is transmitted to the protrusions 330 And is transmitted to the heat dissipating unit 300 as an intermediate. Since the protrusion 330 is made of the same material as the heat dissipating unit 300 and is formed integrally with the heat dissipating unit 300, the heat transfer effect from the light source unit 200 to the heat dissipating unit 300 can be greatly improved have.

The light source unit 200 can be easily mounted on the heat dissipating unit 300 only by assembling the protrusion 330 into the through hole 221 and the protrusion 330 inserted into the through hole 221 Since the rotation or movement of the light source unit 200 is restricted on the light source area 312, it is not necessary to provide a separate fixing member for restricting the movement of the light source unit 200. 3, a nut 340 is inserted into the upper end of the protrusion 330 inserted into the through hole 221 and protruding upward from the light source 200, so as to prevent the light source 200 from flowing up and down. Lt; / RTI > Or the cap may be coupled, although not shown. In this case, it is preferable that the nut 340 and the cap come into contact with the protruding portion 330 and the substrate portion 220 at the same time. Therefore, the nut 340 or the cap is preferably made of a material having excellent thermal conductivity to facilitate heat transfer through the nut 340 or the cap.

In the above description, the through hole 221 is formed in the base 220. Alternatively, a groove (not shown) may be formed in the bottom of the base 220 to receive the protrusion 330 have.

Hereinafter, another example of the projecting portion will be described with reference to Figs. 4 and 5. Fig. Fig. 4 is a perspective view of a heat dissipating unit showing another example of the protrusion shown in Fig. 2, and Fig. 5 is a sectional view showing a main part showing another example of the protrusion shown in Fig.

The protrusion 330 may be formed in various shapes such as a shape that maximizes the contact area between the through hole 221 and the groove or the like while the light source 200 is inserted in the through hole 221 or the groove, Lt; / RTI >

Specifically, the protrusion 330 may be formed to have a predetermined length on the light source region 312. Here, as shown in FIG. 4 (a), the protrusion 330 may have a straight shape, a curved shape, 4 (c), or zigzag as shown in Fig. 4 (d). In this case, although not shown, grooves or through-holes 221 formed in the substrate portion 220 may also be formed in a shape corresponding to the shape of the protrusion 330.

The protrusion 330 may be formed in a shape that prevents the light source unit 200 from vertically moving while restricting the lateral movement of the light source unit 200 with the protrusion 330 itself.

For example, the upper end of the protrusion 330 may be formed of a wedge-shaped clip portion 331. As shown in FIG. 5A, the cutout portion 331a, which is cut downward from the upper end of the protrusion 330, And an engaging protrusion 331b protruding outward from the outer surface of the protrusion 330 is formed to form the wedge-shaped clip portion 331. As shown in FIG.

The wedge-shaped clip portion 331 is elastically deformed in the process of passing through the through-hole 221. The wedge-shaped clip portion 331 is returned to the circular shape again after passing through the through-hole 221, (331b) is engaged with the base portion (220). As a result, the base portion 220 can be prevented from vertically moving while the upper surface is supported by the wedge-shaped clip portion 331.

In this case, as compared with the case where the protrusion 330 is simply in the shape of a column, since the contact surface with the substrate portion 220 is formed also in the latching protrusion 331b, the contact area between the protrusion 330 and the substrate portion 220 is widened So that the heat radiation efficiency can be further improved.

Hereinafter, another structure for preventing the upward / downward flow of the light source unit 200 will be described with reference to FIG. 6 is a cross-sectional view of the main part showing the state where the light source unit is supported by the support part of the light source lid part shown in FIG.

The upward and downward flow of the light source 200 can be prevented by the nut 340 or the cap described above or by the upper end of the protrusion 330 being formed of the wedge shaped clip portion 331, Or may be prevented by the support 110 formed on the light source lid part.

Specifically, a light source cover part covering the light source part 200 may be coupled to an upper side of the heat dissipating body 320. The light source cover part may be a transparent protective cover for protecting the light source part 200 from the external environment.

Or the light source cover may be a lens unit 100 as shown in the drawing. Here, the lens unit 100 collects and captures light emitted from the LED 210 and guides the light to a specific direction. In addition, the light emitted from the LED 210 passing through the lens unit 100 may be combined with the unique color of the lens unit 100 to emit light of a different color from that of the LED 210.

More specifically, the lens unit 100 is inserted into the receiving space 311 of the receiving unit 310 and covers the light source unit 200 while being coupled with the lens unit 100.

The supporting part 110 may be extended to a length that allows the end of the supporting part 110 to support the upper surface of the substrate part 220, .

When the lens unit 100 is coupled to the heat dissipating body 320 so that the lens unit 100 covers the light unit 200 by forming the support unit 110 on the bottom surface of the lens unit 100, So that the substrate portion 220 can be supported by the support portion 110 to prevent upward and downward flow.

The nut 340, the cap, or the wedge-shaped clip portion 331 are not required in the structure in which the support portion 110 prevents the substrate portion 220 from flowing up and down, thereby simplifying the components and simplifying the component shape Longitudinal and lateral flow of the light source unit 200 can be prevented by merely assembling the protrusion 330 into the through hole 221 or groove and assembling the lens unit 100 to the heat dissipation unit 300 .

In FIG. 1, reference numeral 400 denotes a connector portion. The connector unit 400 may receive power from the outside and supply the power to the light source unit 200. The connector unit 400 may be accommodated in a receiving groove formed on the lower side of the heat dissipating body 320.

In FIG. 1, reference numeral 500 denotes a lower housing 500 which can be coupled to the heat dissipating body 320 while covering the connector 400.

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 embodiments, but, on the contrary, It is obvious that the modification or the modification is possible by the person.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

1: LED lighting device 100: lens part
110: Support part 200: Light source part
210: LED 220:
221: Through hole 300: Heat dissipating part
310: accommodating portion 311: accommodating space
312: light source area 320: heat sink body
330: protruding portion 331: wedge-shaped clip portion
331a: incision part 331b:
340: nut 400:
500: housing

Claims (10)

A light source part including a LED, a substrate part on which the LED is mounted and a groove is formed on a bottom surface or a through hole is formed;
A heat dissipation unit for providing a light source region in which the light source unit is disposed on an upper side; And
And protrusions protruding from the light source region and inserted into the grooves or the through holes to allow heat generated in the light source unit to be transmitted to the heat dissipation unit.
The method according to claim 1,
Wherein the protruding portion is formed integrally with the same material as the heat dissipating portion.
The method according to claim 1,
Wherein the groove or the through hole is formed in at least two places of the substrate portion,
And the protruding portion is formed at a position corresponding to the groove or the through hole on the light source region.
The method of claim 3,
Wherein the grooves or the through-holes are formed at equal intervals on a virtual circumference on the substrate.
The method according to claim 1,
Wherein the groove or the through hole and the protrusion have a shape corresponding to each other such that the inner surface of the groove or the through hole and the outer surface of the protrusion are in contact with each other.
The method according to claim 1,
Wherein the protruding portion has a shape of a cylinder, a polygonal column, a cone facing upward, a polygonal pyramid or a hemispherical shape.
The method according to claim 1,
And a nut or a cap is coupled to an upper end of the protrusion inserted into the through hole and protruding upward from the light source unit.
The method according to claim 1,
Wherein the protrusions are formed in a linear shape, a curved shape, a curved shape, or a zigzag shape on the light source area.
The method according to claim 1,
And the upper end of the protrusion is composed of a wedge-shaped clip portion that is elastically deformed, and is engaged with the substrate portion through the through hole.
The method according to claim 1,
And a light source cover unit coupled to an upper side of the heat dissipation unit to cover the light source unit,
And a support portion for pressing an upper surface of the base plate is formed on a bottom surface of the light source lid.
KR1020130021431A 2013-02-27 2013-02-27 LED Lighting Device KR20140106998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130021431A KR20140106998A (en) 2013-02-27 2013-02-27 LED Lighting Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130021431A KR20140106998A (en) 2013-02-27 2013-02-27 LED Lighting Device

Publications (1)

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KR20140106998A true KR20140106998A (en) 2014-09-04

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KR1020130021431A KR20140106998A (en) 2013-02-27 2013-02-27 LED Lighting Device

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