LED lighting apparatus and heat dissipation module

Provided is an LED light which may include a base plate, an LED module disposed under the base plate, a plurality of heat pipes provided over the base plate, and a plurality of heat dissipation fins provided over the base plate. The plurality of heat pipes may include a first portion thermally coupled to the base plate and a second portion that extends from the first portion. The plurality of heat dissipation fins may be spaced apart from each other and thermally coupled to the second portion of the heat pipes to dissipate heat from the LED module. The LED light may include an upper bracket provided over the plurality of heat dissipation fins and fastened to a hanger, and a plurality of studs that connect the base plate to the upper bracket.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims priority under 35 U.S.C. §119 to Korean Application Nos. 10-2013-0079647 filed on Jul. 8, 2013 and 10-2013-0079648 filed on Jul. 8, 2013, whose entire disclosures are hereby incorporated by reference.

BACKGROUND

The present disclosure relates to an LED light, particularly an LED light with a plurality of heat dissipation fins.

LED lights that include heat dissipation modules are known. However, they suffer from various disadvantages.

DETAILED DESCRIPTION

Hereinafter, embodiments of an LED light according to the present disclosure are described with reference to the accompanying drawings. In general, LED lights are lights using LEDs (Light Emitting Diode) as the sources of light. LED lights are being used increasingly more because of the long lifespan and high energy efficiency.

The LED lights may generate intense heat in use, and may require a heat dissipation module for dissipating the intense heat. The heat dissipation module may include heat dissipation fins. A plurality of heat dissipation fins may be disposed in one LED light. Moreover, the heat dissipation capacity of a heat dissipation module may depend on the number of LEDs and the brightness of the LEDs. Hence, there is a need for heat dissipation modules having optimal heat dissipation capacity.

FIG. 1is a perspective view showing an embodiment of an LED light according to the present disclosure,FIG. 2is an exploded perspective view showing the embodiment of an LED light according to the present disclosure,FIG. 3is a side view of the embodiment of an LED light according to the present disclosure with a small number of heat dissipation fins, andFIG. 4is a side view of the embodiment of an LED light according to the present disclosure with a large number of heat dissipation fins.

The LED light may include a base plate2, an LED module4, a heat dissipation module6, and a hanger8. The LED module4may be disposed on the base plate2. The heat dissipation module6may be mounted on the base plate2. The heat generated from the LED module4may transfer to the base plate2and the heat transferred to the base plate2may be transferred to the heat dissipation module6to be dissipated by the heat dissipation module6. The weight of the LED module4and the weight of the heat dissipation module6may be supported by the base plate2, and the load of the base plate2may be supported by the hanger8.

The LED module4may be disposed beneath the base plate2. The LED module4may be disposed to be able to radiate light downward. The LED module4may be fastened to the base plate2by fasteners. The fasteners stated herein may include bolts and nuts that are thread-fastened to the bolts. The fastener may also be screws that are thread-fastened to threads formed in a base material. The LED module4may be supported on the base plate2, and the load of the LED module4may be applied to the base plate2. The LED module4may include a metallic top plate, a PCB on the bottom of the top plate, and a plurality of LEDs arranged in a dot formation on the PCB. The top plate of the LED module4can function as a heat dissipation plate that absorbs and transmits the heat of the PCB to the heat dissipation module6. The top plate of the LED module4may be formed in a plate shape. The top plate of the LED module4may be fastened to the base plate2by fasteners.

The LED light may further include a light transmission window41and a gasket42surrounding the light transmission window41. The LED light may further include a front cover44detachably attached to the base plate2. The light transmission window41may be a lens that transmits the light radiated from LEDs. The light transmission window41may be fixed around the gasket42. The gasket42may be formed in a ring shape. The gasket42may be sized to surround the edge of the LED module4and can prevent water or foreign substances from flowing into the LED module4. The gasket42may be seated and supported on the front cover44.

The front cover44may have a bottom plate with a light hole at the center, on which the gasket42is seated. The front cover44may have an edge bending from the bottom plate and surrounding the gasket42. The front cover44may be attachable/detachable to/from the base plate2. For example, a hook46may be formed at one of the front cover44and the base plate2and a hook hole47where the hook46is elastically attached/detached may be formed at the other one.

The LED module6may be disposed on the base plate2. The load of the heat dissipation module6may be applied to the base plate2. The heat dissipation module6can absorb the heat of the base plate2and dissipate it to the atmosphere. The heat dissipation module6may include heat pipes62receiving the heat of the base plate2and heat dissipation fins64receiving heat from the heat pipes62and dissipating it to the atmosphere. In the heat dissipation module62, the heat pipes62may be disposed at the base plate2and the heat dissipation fins64may be disposed at the heat pipes62.

The heat pipes62may have a heat absorbing portion66that is in contact with the base plate2and a heat dissipating portion68that is in contact with the heat dissipation fins64. The heat absorbing portion66and the heat dissipating portion68may be integrally formed. The heat dissipating portion68may be bent relative to the heat absorbing portion66. For example, the heat dissipating portion68may be perpendicular to the heat absorbing portion66. The heat absorbing portion66may be horizontally disposed on the base plate2and the heat dissipating portion68may be vertically disposed over the base plate2.

The heat pipe62may have a space in which a working fluid flows. The working fluid may rise to the heat dissipating portion68by vaporizing in the heat absorbing portion66and may descend to the heat absorbing portion66by cooling in the heat dissipating portion68. The heat pipe62may be rounded at the joint of the heat absorbing portion66and the heat dissipating portion68.

The heat dissipation module6may include a plurality of heat pipes62. The heat pipes62may be spaced from each other. The heat pipes62may be spaced horizontally over the base plate2. The heat pipes62may be fixed with the heat dissipation fins64. The heat dissipation fins64may be fixed with the heat dissipating portions68of the heat pipes62.

The higher a weight of the heat dissipating portion68, a greater number of the heat pipes62in the heat dissipation module6. The height of the heat dissipating portion68may be proportionate to the number of the heat dissipation fins64on the heat pipes62. The larger the number of the heat dissipation fins64, the larger the height of the heat dissipating portions68may be, and the lower the number of the heat dissipation fins64on the heat dissipating portions68, the smaller the height may be.

In the heat absorbing portion66and the heat dissipating portion68of the heat pipe62, the heat absorbing portion66may be fastened to the base plate2. The heat absorbing portion66can be installed on the base plate2by an adhesive material such as an adhesive. The heat absorbing portion66can be installed on the base plate2by a heat pipe holder70. The heat pipe holder70may cover at least a portion of the heat absorbing portion66, and the heat pipe62may be fixed with at least a portion of the heat absorbing portion66between the base plate2and the heat pipe holder70. The heat absorbing portion66may be inserted and fixed between the heat pipe holder70and the base plate2. The heat absorbing portion66may extend out from between the heat pipe holder70and the base plate2. The heat pipe holder70may surround a portion of the heat absorbing portion66of the heat pipe holder70. The heat pipe holder70may be fastened to the base plate by fasteners. The heat pipe holder70may be fastened to a fastening portion integrally protruding from the base plate2.

The heat dissipation fin64may be disposed on the heat pipe62and thermally coupled thereto. The heat dissipation fin64may be disposed on the heat dissipating portion68of the heat pipe62. The heat dissipation fins64may be disposed and supported on a plurality of heat pipes62. The heat dissipation module6may include a plurality of heat dissipation fins64. The heat dissipation fins64may be arranged on the heat dissipating portions68. The heat dissipation fins64may be arranged as an assembly of plurality of heat dissipation fins stacked over each other. Each of the heat dissipation fins64may have a disk or ring shape, or another appropriate shape based on the desired application and shape of the LED light.

The heat dissipation fins64may be spaced from each other on the heat dissipating portions68. The heat dissipation fins64may be spaced vertically from each other on the heat dissipating portions68. In the heat dissipation module6, the heat dissipation fins64may be spaced vertically from each other on the heat pipes62horizontally spaced from each other. The heat dissipation fins64may be fitted on the heat dissipating portions68. A heat pipe-fixing hole65may be formed at the heat dissipation fins64. A plurality of heat pipe-fixing holes65may be formed at each of the heat dissipation fins64and the number may correspond to the number of the heat pipes62on the base plate2. In the heat pipe62, the heat dissipating portions68may be combined with the heat dissipation fins63by being sequentially fitted in the heat pipe-fixing holes65at the heat dissipation fins64.

The hanger8may be a member for installing an LED light which is provided for mounting an LED light on the ceiling or a wall in a room. The hanger8may be fastened to at least one of the base plate2, the heat dissipation module6, and an upper bracket90, which is described below, and can support the load of the LED light. The hanger8may protect at least a portion of a converter110to be described below. The hanger8may also be referred to herein as a mounting assembly, bracket, or the like.

The hanger8may include a ring82and a converter protector84. The converter protector84may have a top plate86A, a first side plate86B bending from the top plate86A to a side of the converter110, and a second side plate86C bending from the top plate86A to another side of the converter110. The ring82may be disposed on the top plate86A.

A wire holder87that is rounded to surround a portion of a wire112connecting the converter110and the LED module4may be formed at the converter protector84. The wire holder87may be formed at least one of the first side plate86B and the second side plate86C. A portion of the wire112may be fixed and arranged between the wire holder87and the converter110.

The hanger8may include a bottom plate fixed to the upper bracket90by fasteners88, which is described below. The bottom plate may include a first bottom plate89A horizontally bending from the first side plate86B and fixed to the upper bracket90by the fasteners88and a second bottom plate89B horizontally bending from the second side plate86C and fixed to the upper bracket90by the fasteners88.

The LED light1may include the upper bracket90. The LED light may include lower brackets100fastened to the base plate2and the upper bracket90. The lower bracket100may be fastened to the upper bracket90where the height being adjustable. Through-holes94through which fasteners92pass may be formed at any one of the upper bracket90and the lower bracket100. Oblong holes96, through which fasteners92may pass and which are vertically longer than the through-holes94, may be formed on the other one of the upper or lower bracket90,100.

In the LED light, at least one of the upper bracket90and the lower bracket100may be disposed to surround a portion of the edge of the heat dissipation module6. In the LED light, at least one of the upper bracket90and the lower bracket100may function as a handle that allows a person to hold the LED light during installation or servicing. In the LED light, at least one of the upper bracket90and the lower bracket100may function as a heat dissipation module housing that protects of the heat dissipation module6.

The upper bracket90may have a top plate101and side plates102which is bent down from the top plate101. The upper bracket90may be fastened to the hanger8. The top plate101of the upper bracket90may be fastened to the hanger8. At least one heat dissipation hole105may be formed through the top plate101. A wire through-hole106through which the wire112passes may be formed at the upper bracket90. The wire through-hole106may be formed at the top plate101of the upper bracket90. The upper bracket90may have a plurality of side plates102.

A number of lower brackets100may correspond to a number of side plates102of the upper bracket90. The lower bracket100may have a bottom plate103and a side plate104that is bent up from the bottom plate103. The bottom plate103of the lower bracket100may be fastened to the base plate2by fasteners108. The side plate104of the lower bracket100may be fastened to the upper bracket90where the height being adjustable.

The positions of the fastening members92passing through the oblong holes96may depend on the number of the heat dissipation fins64disposed the LED light, as illustrated inFIGS. 3 and 4. The distance between the upper end96′ of the oblong hole96and the fastening member92may be proportionate to the number of the heat dissipation fins64. The larger the number of the heat dissipation fins64, the closer to the lower end96″ of the oblong hole96the fastening members92may be disposed, and the smaller the number of the heat dissipation fins64, the closer to the upper end96′ of the oblong hole96the fastening members92may be disposed. One of the oblong holes96and the through-hole94may be formed at the side plate102of the upper bracket90and the other one may be formed at the side plate104of the lower bracket100.

The LED light may further include the converter110. The converter110may be a rectifier that converts AC into DC. The converter110may be connected with the LED module4by the wire112. The converter110can apply DC power to the LED module4through the wire112. The converter110may be mounted on the upper bracket90. The hanger110may have a bottom plate fastened to the upper bracket90by fasteners113. The bottom plate may include a first bottom plate114A horizontally protruding from a side of the lower portion of the converter110and fixed to the upper bracket90by the fasteners113, and a second bottom plate114B horizontally protruding from the other side of the lower portion and fixed to the upper bracket90by the fasteners113. For the converter110, converters having different capacities may be selectively provided, depending on the heat dissipation capacity of the heat dissipation module6.

The LED light may further include studs120that connect the base plate2and the upper bracket90. The stud120may be formed in a hollow cylindrical shape. The studs120can function as supports that support the base plate2to the upper bracket90. The studs120can function as may supports by connecting the base plate2and the upper bracket90, such that the load of the heat dissipation module6and the load of the LED module4may be applied to the base plate2, and the studs120can support the base plate2to the upper bracket90together with the heat dissipation module6and the LED module4.

The studs120may be arranged vertically between the upper bracket90and the base plate2. The lower portion of the studs120may be fixed to the base plate2and the upper portion may be fixed to the upper bracket90. The lower portion of the studs120may be fastened to the base plate2by fasteners. The fasteners may be connected to the lower portion of the studs120through through-holes formed at the base plate2. The upper portion of the studs120may be fastened to the upper bracket90by fasteners124. The fasteners124may be connected to the upper portion of the studs120through through-holes formed at the top plate101of the upper bracket90. The studs120may be disposed between the base plate2and the upper bracket90and they may distribute the load on the base plate2. The heights H2and H4of the studs120may be proportionate to the number of the heat dissipation fins64on the heat pipes62. The larger the number of the heat dissipation fins64on the heat pipes62, the larger the height of the studs120may be, and the smaller the number of the heat dissipation fins64on the heat pipes62, the lower the height may be.

Hereinafter, the operation of the LED light of the present disclosure is described. In the LED light, as an example, the LED module4and the heat dissipation module6are fastened to the base plate2, the base plate2is fastened to the upper bracket90by the lower brackets100, and the upper bracket90may be fastened to the hanger8, in which the load of all of the LED module4, the heat dissipation module6, and the base plate2may be applied to the hanger8through the lower brackets100and the upper bracket90.

In the LED light, as another example, the LED module4and the heat dissipation module6are fastened to the base plate2, the base plate2is fastened to the upper bracket90by the studs120, and the upper bracket90may be fastened to the hanger8, in which the load of the LED module4, the heat dissipation module6, and the base plate2may be applied to the hanger8through the studs120and the upper bracket90.

In the LED light, as another example, the LED module4and the heat dissipation module6are fastened to the base plate2, the base plate2is fastened to the upper bracket90by the studs120and the lower brackets100, and the upper bracket90may be fastened to the hanger8, in which the load of all of the LED module4, the heat dissipation module6, and the base plate2may be applied to the upper bracket90and the hanger8through the studs120and the lower brackets100.

The heat dissipation capacity of the LED light may depend on the number of the heat dissipation fins64. The larger the number of the heat dissipation fins64, the larger the heat dissipation capacity of the LED light, and the smaller the number of the heat dissipation fins64, the smaller the heat dissipation capacity. In the LED light, referring toFIGS. 3 and 4, the distance between the base plate2and the upper bracket90may be small when the number of the heat dissipation fins64is small, and the distance between the base plate2and the upper bracket90may be large, when the number of the heat dissipation fins64is large. Four heat dissipation fins64are disposed on the LED light shown inFIG. 3, while six heat dissipation fins64are disposed in the LED light shown inFIG. 4. The heat dissipation capacity of the LED light ofFIG. 4with more heat dissipation fins may be greater than the heat dissipation capacity of the LED light ofFIG. 3with less heat dissipation fins.

The heat dissipation capacity of the LED light may be changed by replacing the heat pipes62, the converter110, and the studs120. When the converter110is a variable resistance, control type, the heat dissipation capacity of the LED light may be changed by replacing the heat pipes62and the studs120.

In the LED light, the base plate2, the heat dissipation fins64, and the upper bracket90may be used in common, except the heat pipes62, the converter110, and the studs120. In the LED light, as shown inFIG. 3, when the number of the heat dissipation fins4is small, the heat pipes62having the small height H1and the studs120having the small height H2may be provided. In contrast, in the LED light, as shown inFIG. 4, when the number of the heat dissipation fins6is large, the heat pipes62′ having the height H3(H3>H1) larger than the height of the heat pipes62of the LED light shown inFIG. 3may be provided and the studs120′ having the height H4(H4>H2) larger than the height of the studs120of the LED light shown inFIG. 3may be provided.

In the LED light, as shown inFIG. 3, when the number of the heat dissipation fins4is small, the heat pipes62having the small height H1may be provided and the lower brackets100may be fastened at higher positions on the upper bracket90. In contrast, in the LED light, as shown inFIG. 4, when the number of the heat dissipation fins6is large, the heat pipes62′ having the height H3(H3>H1) larger than the height of the heat pipes62of the LED light shown inFIG. 3may be provided and the lower brackets100may be fastened at lower positions on the upper bracket90.

In the LED light, as shown inFIG. 3, when the number of the heat dissipation fins4is small, the heat pipes62having the small height H1and the studs120having the small height H2may be provided, and the lower brackets100may be fastened at higher positions on the upper bracket90. In contrast, in the LED light, as shown inFIG. 4, when the number of the heat dissipation fins6is large, the heat pipes62′ having the height H3(H3>H1) larger than the height of the heat pipes62of the LED light shown inFIG. 3may be provided, the studs120′ having the height H4(H4>H2) larger than the height of the studs120of the LED light shown inFIG. 3may be provided, and the lower brackets100may be fastened at lower positions on the upper bracket90.

FIG. 5is an enlarged cross-sectional view showing a heat pipe and heat dissipation fins of another embodiment of an LED light according to the present disclosure. In the LED light, spacers130may be provided that space multiple heat dissipation fins64from each other at the heat dissipating portions68. The embodiment is the same or similar in configuration and operation, except the spacers130, to the previous embodiment, so the same reference numerals are used and the detailed description is not provided.

The spacers130may be positioned between the heat dissipation fins64on the outer side of the heat dissipating portion68. The spacers130may have a ring shape. The spacers130may be acryl-coated portions. The heat dissipating portion68may have a heat dissipation fin contact area A that is in contact with the heat dissipation fin64and a spacer-forming area B where the spacer130is formed without being in contact with the heat dissipation fin64.

FIG. 6is an enlarged plan view showing a heat pipe holder of an LED light according to the present disclosure,FIG. 7is a cross-sectional view taken along line C-C shown inFIG. 6, andFIGS. 8A to 8Care views illustrating a process of combining a base plate and a heat pipe holder according to one embodiment.

In the LED light, heat pipe holders70may be fastened to fastening portions22which may be integrally formed on the base plate2. The heat pipe holder70may be fastened to the base plate only by the fastening portions22without fasteners such as bolts or nuts. The heat pipe holders70may be directly fastened to the base plate2by the fastening portions22. When the heat pipe holder70is fastened to the base plate2, the fastening portions22may hold the heat pipe holder70to the base plate2while being positioned through the heat pipe holder70. The fastening portion22may be provided around outer edges of the heat pipe holder to press the heat pipe holder70to the base plate2around the heat pipe holder70, without passing through the heat pipe holder70.

In the following description, it is assumed that the fastening portion22passes through the heat pipe holder70and a through-hole72for passing the fastening portion22is formed at the heat pipe holder70. The fastening portion22can fix the heat pipe holder70to the base plate70, passing through the through-hole72of the heat pipe holder70.

The heat pipe holder70may have a holding portion74covering a portion of the heat pipe62together with the base plate2and a fixed portion76integrally formed with the holding portion74and fixed to the fastening portion22. The heat pipe holder70may have one holding portion74and one fixed portion76or may have one holding portion74and a plurality of fixed portions76. In the heat pipe holder70, a first fixed portion76A may be formed at a side of the holding portion74and a second fixed portion76B may be formed at the other side of the holding portion74. In the following description, it is assumed that the fixed portion76is described as having a common configuration for the first fixed portion76A and the second fixed portion76B, and when they are separately described, the first fixed portion76A and the second fixed portion76B are discriminated from each other to have different configurations.

The holding portion74can cover a portion of the outer circumference of the heat pipe62. The holding portion74can cover a portion of the heat absorbing portion66of the heat pipe62. The holding portion74may be rounded with a semicircular cross-section or an elliptical cross-section. The fixed portion76may be formed in a plate shape and one side of the fixed portion76may be in surface contact with the base plate2. The surface, which faces the base plate2, of the fixed portion76may be in surface contact with the base plate2. The fixed portion76may be a flange. The surface, which does not face the base plate2, of the fixed portion76may not be in contact with the top of the base plate2. The through-hole72may be formed to correspond to the fixed portion76, not the holding portion74. A plurality of through-holes72may be formed at the fixed portion76and a plurality of fastening portions22may be fastened to the fixed portions76.

Through-hole passing portions24that pass the through-holes72may protrude on the base plate2. Pressing portions26that press the heat pipe holders70to the base plate2may protrude from the through-hole passing portions24. The through-hole passing portion24and the pressing portion26may form the fastening portion22that is integrally formed on the base plate2.

The through-hole passing portion24may protrude opposite to the LED module4. The through-hole passing portion24may protrude opposite to the LED module4, on the top of the base plate2. The through-hole passing portion24may be formed in a cylindrical shape, a polygonal-cylindrical shape or another appropriate shape based on the application.

The pressing portion26may protrude in contact with the top surface70A of the heat pipe holder70. The pressing portion26may protrude in parallel with the top surface2A of the base plate2, over the through-hole passing portion24. The top surface2A of the base plate2may be the portion, except the through-hole passing portion24and the pressing portion26, in the top of the base plate2. The pressing portion26may be a contact portion that the top surface2A of the base plate2is in contact with. The pressing portion26may function as a locking step where the base plate2is vertically locked. The pressing portion26may have a step T from the top surface2A of the base plate2. The pressing portion26may cover a portion of the top surface70A of the heat pipe holder70. The pressing portion26may be larger in size than the through-hole. That is, the size S1(or width) of the pressing portion26may be larger than the size S2(or width) of the through-hole72after the pressing portion26is pressed down.

The pressing portion26of the fastening portion22may be formed by forming a protrusion first on the base plate by pressing a portion of the base plate2and then deforming the protrusion under pressure, in which a space D with the top and the side closed and the bottom open may be formed under the through-hole passing portion24in the base plate2. The base plate2may be divided into the fastening portion22an a plate portion2B by the portion where the through-hole passing portion24protrudes from the base plate2. The plate portion2B may be the portion except the through-hole passing portion24and the pressing portion26in the base plate2and may be a non-protruding portion. The space D may be formed at the plate portion2B and may be formed with the bottom open in the plate portion2B. The pressing portion26may restrict separation of the heat pipe holder70while being spaced from the top2A of the plate portion2B.

The fastening portion22may be formed by riveting, and in the following description, the fastening portion22is referred to as a riveted portion22merely for convenience and the same reference numerals are used. The riveted portions22fixing the heat pipe holders70to the base plate2may be formed on the base plate2. The riveted portion22may protrude opposite to the LED module4. The riveted portion22may protrude with a step T from the top of the base plate2. The riveted portion22may protrude with a step T from the top2A of the plate portion2B. The riveted portion22may cover a portion of the top surface70A of the heat pipe holder70. A plurality of riveted portions22may be spaced in direction L2parallel with the length direction L1of the heat pipe holders70. A space D with the top and the side closed and the bottom open may be formed under the riveted portion22in the base plate2.

FIGS. 8A to 8Care views illustrating a process of combining a base plate and a heat pipe holder according to another embodiment of an LED light according to the present disclosure.FIG. 8Ais a cross-sectional view when a protrusion22′ is formed on the base plate2.FIG. 8Bis a cross-sectional view when the heat pipe holder70is seated on the base plate, in which the protrusion22′ passes through the through-hole72of the heat pipe holder70.FIG. 8Cis a cross-sectional view when the protrusion22′ is deformed by riveting and the pressing portion26presses the heat pipe holder70. The protrusion22′ shown inFIGS. 8A and 8Bmay be deformed into the pressing portion with the top deformed wide.

On the other hand, a method of manufacturing an LED light, as shown inFIG. 8A, may include a pressing step that forming the protrusion22′ by pressing a portion of the base plate2with a press. In the pressing step, the space D pressed for forming the protrusion22′ may be formed in the base plate2. The method of manufacturing an LED light may include a heat pipe holder-seating step that arranges the protrusion22′ through the through-hole72of the heat pipe holder70while seating the heat pipe holder70onto the base plate2. The method of manufacturing an LED light may include a riveting step that rivets the protrusion22′ by pressing it. In the riveting step, the protrusion22′ may be deformed into the pressing portion26covering a portion of the top surface70A of the heat pipe holder70while the top expands, and the heat pipe holder70is restricted in downward movement, vertical movement, and horizontal movement by the plate portion2B, the pressing portion26, and the through-hole passing portion24, respectively.

In the LED light, when the base plate2and the heat pipe holder70are combined, a gap is not formed through which water or foreign substances may flow inside, between the fastening portion22and the plate portion2B. Here, water or foreign substances on the top surface2A of the base plate2are prevented from flowing into the LED module4through the base plate2, such that the waterproof ability of the LED light can be improved.

As can be appreciated in the foregoing disclosure of an LED light as broadly described and embodied herein, an object of the present disclosure is to provide an LED light that can control the heat dissipation capacity of a heat dissipation module. Another object of the present disclosure is to provide an LED light with high reliability.

In one embodiment, an LED light according to the present disclosure may include: a base plate; an LED module disposed beneath the base plate; a plurality of heat pipes having a heat absorbing portion being contact with the base plate and a heat dissipating portion bending from the heat absorbing portion; a plurality of heat dissipation fins spaced from each other on the heat dissipating portions; an upper bracket fastened to a hanger; and studs connecting the base plate and the upper bracket.

The studs may be fastened to the upper bracket by fasteners. The heights of the heat dissipating portion and the stud may be proportionate to the number of the heat dissipation fins. The LED light may further include lower brackets fastened to the base plate and fastened to the upper bracket with the height adjustable. The LED light may further include a converter disposed on the upper bracket and connected with the LED module by a wire. The upper bracket may have a wire through-hole through which the wire passes. Moreover, a spacer that spaces the heat dissipation fins may be formed at the heat dissipating portion.

In one embodiment, an LED light according to the present disclosure may include: a base plate; an LED module disposed beneath the base plate; a plurality of heat pipes having a heat absorbing portion being contact with the base plate and a heat dissipating portion bending from the heat absorbing portion; a plurality of heat dissipation fins spaced from each other on the heat dissipating portions; an upper bracket fastened to a hanger; and lower brackets fastened to the base plate and fastened to the upper bracket with the height adjustable.

Through-holes through which fasteners pass may be formed at any one of the upper brackets and the lower brackets, and oblong holes through which the fasteners pass and which are vertically longer than the through-holes may be formed at the other one. The position of the fasteners passing through the oblong holes may depend on the number of the heat dissipation fins. The distance between the upper end of the oblong hole and the fastener may be proportionate to the number of the heat dissipation fins.

The upper bracket may have a top plate and side plates bending down from the top plate. The lower bracket may have a bottom plate and a side plate bending up from the bottom plate. One of the oblong holes and the through-holes may be formed at the side plates of the upper bracket and the other one may be formed at the side plates of the lower brackets. Moreover, at least one heat dissipation hole may be formed at the top plate. In this embodiment, the upper bracket may have a plurality of side plates and the number of the lower brackets may be the same as the number of the side plates of the upper bracket.

In one embodiment, an LED light according to the present disclosure may include: a base plate; an LED module disposed beneath the base plate; a plurality of heat dissipation fins; and heat pipes having a heat absorbing portion being contact with the base plate and a heat dissipating portion being in contact with the heat dissipation fins, in which a spacer that spaces the heat dissipation fins is formed at the heat dissipating portion.

The spacer may be disposed between the heat dissipation fins, on the outer side of the heat dissipating portion. The spacer may be a ring. The spacer may be an acryl-coated portion. Moreover, the heat dissipating portion may have a heat dissipation fin contact area being in contact with the heat dissipation fin and a spacer-forming area where the spacer is formed without being in contact with the heat dissipation fin.

In one embodiment, an LED light according to the present disclosure may include: a base plate; an LED module disposed beneath the base plate; heat dissipation fins; heat pipes having a heat absorbing portion being contact with the base plate and a heat dissipating portion being in contact with the heat dissipation fins; and heat pipe holders at least partially covering the heat absorbing portions, in which riveted portions fixing the heat pipe holders to the base plate are integrally formed at the base plate.

The riveted portion may protrude opposite to the LED module. The riveted portion may protrude with a step from the top of the base plate. The riveted portion may cover a portion of the top of the heat pipe holder. The riveted portions may be spaced in the direction parallel with the length direction of the heat pipe holders. Moreover, the base plate may have a space with the top and the side closed and the bottom open, under the riveted portions.

In one embodiment, an LED light according to the present disclosure may include: a base plate; an LED module disposed beneath the base plate; heat dissipation fins; heat pipes having a heat absorbing portion being contact with the base plate and a heat dissipating portion being in contact with the heat dissipation fins; and heat pipe holders at least partially covering the heat absorbing portions and having through-holes, in which through-hole passing portions passing through the through-holes protrude on the base plate and pressing portions pressing the heat pipe holders to the base plate are formed at the through-hole passing portions.

The through-hole passing portion may protrude opposite to the LED module. The pressing portion may protrude in contact with the top of the heat pipe holder. The pressing portion may protrude in parallel with the top of the base plate, above the through-hole passing portion. The riveted portion may have a step from the top of the base plate. The pressing portion may cover a portion of the top of the heat pipe holder. The pressing portion may be larger in size than the through-hole. Moreover, the base plate may have a space with the top and the side closed and the bottom open, under the through-hole passing portion.

In one embodiment, a method of manufacturing an LED light according to the present disclosure may include: forming protrusions by pressing a portion of a base plate with a press; arranging the protrusions through through-holes of heat pipe holders while seating the heat pipe holders onto the base plate; and riveting the protrusions by pressing them.

The LED light as broadly described and embodied herein has the advantage in that it is possible to change the heat dissipation capacity by changing the number of the heat dissipation fins. That is, it is possible to change the heat dissipation capacity in a simple way by changing the number of the heat dissipation fins and replacing the heat pipes and the studs. Moreover, the disclosed LED light has the advantage in that it is possible to manufacture various models with different capacities while using the upper bracket, the base plate, and the hanger in common.

One advantage of the LED light of the present disclosure is that it is easy to control the height of the LED light. Moreover, the disclosed LED light has the advantage in that it is possible to prevent the heat dissipation fins from sagging and keep high heat dissipation performance.

One advantage of the LED light of the present disclosure is that it is possible to prevent water or foreign substances on the top of the base plate from flowing into the LED module through the portion where the heat pipe holders are fastened, and to reduce water flowing into the LED module as less as possible.

One advantage of the LED light of the present disclosure is that it is possible to fasten the heat pipe holders to the base plate in a simple process. It is also possible to minimize vibration by fixing the heat pipes under pressure. Moreover, the LED light of the present disclosure has the advantage in that specific fasteners for fastening the heat pipe holders to the base plate are not required and it is possible to minimize the number of parts.