KR20090106276A - Heat sink and lighting apparatus therewith - Google Patents

Abstract

PURPOSE: A heat sink and a light device including the same are provided to increase the life of the light device by dispersing the heat in the light emitting unit. CONSTITUTION: A heat sink(120) includes a radiating plate and a radiating discharging unit. The heat discharging unit is formed in the heat discharging plate. The radiating unit passes through the heat discharging plate. The heat discharging unit includes a first radiating unit and a second radiating unit. A plurality of radiating plates are stacked to arrange the first radiating unit and the second radiating unit alternatively. The lighting device(100) includes a light emitting unit, the heat sink, and a body(130). The heat sink radiates the heat from the light emitting unit. The protrusion is formed in the body to supply the external air to the heat sink.

Description

Heat sink and lighting device having same {HEAT SINK AND LIGHTING APPARATUS THEREWITH}

The present invention relates to a lighting device, and more particularly, to a heat sink for dissipating heat of a light emitter and a lighting device having the same.

In addition to simply identifying objects, lights are used to create a décor or a cozy atmosphere. Such lighting is generally incandescent or fluorescent.

Incandescent lamps are simple to attach to lighting and easy to combine with other lighting fixtures, despite the widespread use of fluorescent lamps, the demand is still high. Fluorescent lamps are widely used with incandescent lamps because of their relatively high efficiency and long life compared to incandescent lamps that use filaments.

Recently, iodine bulbs, high-efficiency halide lamps, solar lamps, etc. using halogen cycles have been developed and used as lamps. The EL lamp, which is a crystal light emitting device, is spotlighted as a next-generation light source as a surface light source, but has not yet reached the practical stage due to problems such as efficiency and light source device.

In recent years, light emitting diodes (“LEDs”), which are optoelectronic devices, have been used as lamps. This LED is applied to various places such as outdoor large billboards, traffic signals, automobile dashboards, medical equipment, and warning lights. I am in the limelight.

According to the prior art using the light emitter as described above, there is a problem that the panel is broken or the life of the light emitter itself is reduced due to the high heat emitted from the light emitter, and thus a mechanism for heat dissipation must be additionally provided. There is a problem. Therefore, there is a need for improvement.

The present invention was devised to improve the above problems, and an object thereof is to provide a heat sink having an improved structure so as to reduce the effect of heat emitted from a light emitter and a lighting device having the same.

Heat sink according to an aspect of the present invention comprises: a heat sink; And a heat dissipation unit formed on the heat dissipation plate.

Here, the heat dissipation unit is preferably formed to penetrate the heat dissipation plate.

In addition, the heat dissipation unit preferably includes a first heat dissipation unit and a second heat dissipation unit having different shapes.

In addition, it is preferable that a plurality of heat sinks are stacked so that the first heat dissipation part and the second heat dissipation part are alternately arranged.

The first heat dissipation part may have a quadrangular shape, and the second heat dissipation part may have a * shape.

In addition, the outer periphery of the heat dissipation unit is preferably formed in a circular shape.

In addition, the heat sink is characterized in that the heat radiation fin is formed.

In addition, the lighting apparatus according to another aspect of the present invention includes: a light emitting unit; A heat sink dissipating heat generated by the light emitting unit; And a main body having a stepped portion formed to supply external air to the heat sink.

Here, the heat sink, the heat sink; And a heat dissipation unit formed on the heat dissipation plate.

In addition, the heat dissipation unit is preferably formed to penetrate the heat dissipation plate.

In addition, the heat dissipation unit preferably includes a first heat dissipation unit and a second heat dissipation unit having different shapes.

The heat sink may be formed by stacking a plurality of heat sinks such that the first heat dissipation part and the second heat dissipation part are alternately arranged.

The first heat dissipation part may have a quadrangular shape, and the second heat dissipation part may have a * shape.

In addition, the outer periphery of the heat dissipation unit is preferably formed in a circular shape.

In addition, it is preferable that a heat radiation fin is formed in the heat radiation portion.

In addition, a cover portion surrounding the light emitting portion; And a cover coupled to the cover part and coupled to the heat sink to support the light emitting part toward the heat sink side.

In addition, the lighting apparatus according to another aspect of the present invention includes: a light emitting unit; A heat sink including a heat dissipation plate for dissipating heat generated by the light emitting unit, and a heat dissipation unit formed to penetrate the heat dissipation plate; And a body coupled with the heat sink.

In addition, the lighting apparatus according to another aspect of the present invention comprises: a light emitting unit having a first light emitting body and a second light emitting body; A heat sink dissipating heat generated by the light emitting unit; A main body coupled with the heat sink; And a control unit for dimming the first light emitter and the second light emitter.

Here, the color temperature of the first light emitter is 2000K ~ 4000K, the color temperature of the second light emitter is preferably 5000K ~ 8000K.

The control unit may further include a dimming controller configured to generate a dimming control signal of at least one of the first light emitting body and the second light emitting body; And a ballast configured to receive a dimming control signal from the dimming controller and to control lighting or illuminance of at least one of the first light emitting body and the second light emitting body.

According to the heat sink of the present invention and the lighting apparatus having the same, it is possible to efficiently disperse high heat generated in the light emitting body to increase the life of the light emitting body, and there is no need to add a mechanism for heat dissipation to reduce the manufacturing cost And there is an advantage that the weight is not increased.

In addition, the present invention has the advantage that the light having a variety of illuminance and color temperature can be freely implemented by only one device by emitting light using a method of mixing two or more light emitters and a method of dimming control.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a heat sink and a lighting device having the same according to the present invention. For convenience of description, the thicknesses of the lines and the size of the elements shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view showing a lighting device according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the lighting device shown in Figure 1, Figure 3 is a perspective view showing the heat sink shown in FIG.

1 to 3, the lighting apparatus 100 according to an embodiment of the present invention includes a light emitting unit 110, a heat sink 120, and a main body 130.

The light emitter 110 includes at least one light emitter 112 that emits light. LED may be applied to the light emitter 112, but is not limited thereto. In the present embodiment, the light emitter 112 is provided on the first printed circuit board 114.

The heat sink 120 emits heat generated by the light emitting unit 110, and as illustrated in FIGS. 1 to 3, the heat sink 120 includes a heat sink 122 and a heat radiating unit 124.

The heat sink 122 is provided between the light emitting unit 110 and the main body 130 to be described later. The heat sink 122 is preferably formed in a circular shape on the outer circumference thereof. In this embodiment, since the outer circumference of the heat sink 122 is formed in a circular shape, it is possible to efficiently perform surface treatment such as coloring, plating, etc. on the surface of the heat sink 122. The through hole 122a is formed at the center of the heat sink 122.

The heat dissipation unit 124 is formed on the heat dissipation plate 122. The heat dissipation unit 124 may be formed to penetrate the heat dissipation plate 122, and a plurality of heat dissipation units 124 may be disposed around the through-hole 122a formed at the center of the heat dissipation plate 122.

In the light emitting unit 110, high heat is generated by lighting of the light emitting body 112 such as an LED. Heat generated in the light emitting unit 110 damages the light emitting unit 110 and reduces the life of the light emitting body 112 such as an LED. Therefore, it is preferable to dissipate the generated heat to the outside of the light emitting unit 110.

According to the lighting device 100 according to the present embodiment, heat generated in the light emitting unit 110 is dissipated to the outside through the heat sink 120. The heat dissipation unit 124 improves heat dissipation efficiency by widening the contact area between the heat dissipation plate 122 and the outside or allowing air to flow.

The heat radiation part 124 is provided with a heat radiation fin 124a. The heat dissipation fin 124a is preferably formed on the inner surface of the heat dissipation unit 124. In the present embodiment, the heat dissipation fin 124a is illustrated as having a plurality of fins spaced apart along the inner surface of the heat dissipation unit 124, but the present invention is not limited thereto. Of pins may be formed in a pleated shape spaced apart, may be formed in a shape in which different sizes of pins are alternately protruding, and may be formed in a shape in which a plurality of protrusions protrude inside. Do.

The uneven portion 122b is formed at the outer circumference of the heat sink 122. The protrusion 122c may be formed on the outer side of the uneven portion 122b. Like the heat dissipation part 124, the heat dissipation fins 124a, the uneven parts 122b, and the protrusions 122c also improve the heat dissipation effect by increasing the contact area between the heat dissipation plate 122 and the outside.

In the heat sink 120 of the present embodiment, by efficiently dissipating heat generated from the light emitting unit 110 to the outside, the influence due to high heat generated from the light emitting body 112 such as an LED can be reduced.

Meanwhile, the main body 130 is provided below the heat sink 122. Body 130 is coupled to the power system of the external socket portion is connected to the commercial power line. The main body 130 is formed of a base 132 made of polycarbonate, and an inner socket part 134 electrically connected to the outer socket part is formed under the base 132.

The control unit 140 for driving the light emitting unit 110 is provided in the main body 130. The internal socket part 134 and the first printed circuit board 114 are electrically connected through wires (not shown). Here, the electric wire is electrically connected to the internal socket part 134 and the control unit 140 in the main body 130, and passes through the through hole 122a of the heat sink 120 in the main body 130. The printed circuit board 114 and the second printed circuit board 141 are connected to each other. In the present embodiment, the control unit 140 is provided on the second printed circuit board 141.

4 is a block diagram showing the configuration of the lighting apparatus shown in FIG.

Referring to FIG. 4, the light emitter 112 includes a first light emitter 111 and a second light emitter 113. Here, the second light emitter 113 may emit light having a color temperature different from that of the first light emitter 111. For example, the first light emitter 111 emits light having a color temperature of 2000K to 4000K, and the second light emitter 113 emits light having a color temperature of 5000K to 8000K. In the light emitter 112, the light emitted from the first light emitter 111 and the second light emitter 113 is mixed to emit light. Assuming that the color temperature of light emitted from the first light emitter 111 is 2000K and the color temperature of light emitted from the second light emitter 113 is 8000K, the light emitted from the light emitter 112 is approximately 2000K and 8000K. It has a color temperature of about 5000K. In addition, if the color temperature of light emitted from the first light emitter 111 is 2000K and the second light emitter 113 does not emit light, the light emitted from the light emitter 112 may have a color temperature of about 2000K. Preferably, the light emitter 112 may include five first light emitters 111 and second light emitters 113, respectively.

The control unit 140 includes a dimming controller 142 and a ballast 147.

The dimming controller 142 generates a dimming control signal of at least one of the first light emitter 111 and the second light emitter 113, and includes a power supply unit 143, a main controller 144, an input unit 145, and a dimming control signal. And a signal transmitter 146.

In this embodiment, the power supply unit 143 receives the power through an external power line (not shown) to perform surge removal filtering, and generates a power voltage to a DC constant voltage. The power supply voltage generated by the power supply unit 143 is supplied to the operating power of the main controller 144 and the signal transmitter 146.

The main controller 144 receives operating power from the power supply 143 to generate dimming control data for dimming control of at least one of the first light emitting body 111 and the second light emitting body 113, and the input unit 145. The dimming control data such as pulse width modulation data is controlled by the key input signal inputted from the controller to adjust lighting or illuminance of light emitted from the first light emitting body 111 or the second light emitting body 113. Here, the input unit 145 includes a button for controlling on / off, illuminance up / down, reset, etc. of light emitted from the first light emitter 111 or the second light emitter 113. On the other hand, in the present embodiment has been described with an example having a button for controlling the above functions, the present invention is not limited to this and various modifications are possible.

The signal transmitter 146 amplifies the dimming control data generated by the illuminance control of the main controller 144 as an analog signal, outputs a dimming control signal such as a pulse width modulation signal PWM, and stabilizes the dimming control signal. (147).

The ballast 147 receives the dimming control signal from the dimming controller 142 and controls the lighting or illuminance of at least one of the first light emitting body 111 and the second light emitting body 113, and the signal receiving unit 148 and the eye. Government 149.

The signal receiver 148 receives a dimming control signal from the signal transmitter 146 of the dimming controller 142 and operates the stabilizer 149 according to the dimming control signal. The stabilizer 149 receives a dimming control signal through the signal receiver 148 to control lighting or illuminance of at least one of the first light emitter 111 and the second light emitter 113.

According to the dimming control performed by the control unit 140 as described above, the degree of illuminance of the light when the first light emitter 111 or the second light emitter 113 is emitted at the highest illuminance is 100% or turned off. When the degree of illuminance of light at the time is defined as 0%, the degree of illuminance of light can be adjusted from 0 to 100%.

As such, when the degree of illuminance of the light emitted from the first light emitter 111 or the second light emitter 113 is adjusted, the light emitted from the light emitter 112 changes not only the illuminance but also the color temperature. That is, the light emitted from the light emitter 112 corresponds to the degree of illuminance of at least one of the first light emitter 111 and the second light emitter 113 by the control unit 140, and the illuminance is adjusted. Will have roughness and color temperature.

As described above, the lighting device 100 according to the present embodiment may implement various types of illuminance or color temperature with only one device.

Meanwhile, in the present embodiment, the light emitter 112 is illustrated as having two light emitters having different color temperatures, but is not limited thereto. The light emitter 112 may include three or more light emitters having different color temperatures. By providing a variety of light intensity and color temperature can be implemented.

5 is a cross-sectional view of the lighting apparatus shown in FIG. 1.

2 and 5, a stepped portion 136 is formed in the main body 130. Outside air is supplied to the heat radiating part 124 of the heat sink 120 through the stepped part 136. Since the stepped part 136 is formed stepwise on one side of the base 132 facing the heat sink 120, the outside air is supplied to the heat radiating part 124 while the heat sink 120 and the main body 130 are coupled to each other. . Therefore, since the heat dissipation unit 124 communicates with the outside, heat generated in the light emitting unit 110 may be efficiently dissipated.

The lighting device 100 including the heat sink 120 and the main body 130 as described above can efficiently dissipate heat generated from the light emitting unit 110 through the heat sink 120. In addition, since the stepped portion 136 is formed on the main body 130, the heat dissipation performance may be further improved, and damage due to heat may be reduced. Therefore, the lighting device 100 according to the present embodiment can increase the lifespan of the light emitting body 112, and there is no need to install a mechanism for heat dissipation, thereby reducing manufacturing cost and weight.

Meanwhile, the lighting device 100 according to the present embodiment further includes a cover part 150 and a combination body 160.

The cover part 150 is disposed above the heat sink 120 to surround the light emitting part 110. The cover part 150 protects the light emitting part 110 and is formed of a transparent or translucent material to increase the diffusivity of the light emitted from the light emitter 112. The cover part 150 is coupled to the assembly 160. Since the heat sink 120 has a plurality of heat dissipating parts 124, it is not easy to directly couple the cover part 150 to the heat sink 120. Therefore, in the present embodiment, the hook 152 is formed in the cover part 150, and the fitting hole 162 is formed in the assembly 160 so as to correspond to the cover part 150, thereby coupling the cover part 150 to the assembly 160. The light emitter 110 is disposed between the combiner 160 and the heat sink 120, and the combiner 160 is coupled to the light emitter 110 and the heat sink 120.

6 is an exploded perspective view showing a lighting apparatus according to another embodiment of the present invention, Figure 7 is an exploded perspective view showing a heat sink shown in Figure 6, Figure 8 is a plan view of the heat sink shown in FIG.

For convenience of description, the same or similar elements and configurations with the above embodiments are referred to by the same reference numerals, and detailed description thereof will be omitted.

6 to 8, a lighting device 200 according to another embodiment of the present invention includes a heat sink 220. The heat sink 220 includes a plurality of heat sinks 222 that are stacked, and each heat sink 222 is formed to penetrate the heat sink 224. The heat dissipation part 224 includes a first heat dissipation part 226 and a second heat dissipation part 228 having different shapes. Preferably, the first heat dissipation part 226 may have a cross-section having a square shape, and the second heat dissipation part 228 may have a “*” shape of a cross section. However, the present invention is not limited thereto, and the first heat dissipation part 226 and the second heat dissipation part 228 may be formed in various shapes in consideration of heat dissipation performance of the heat sink 220.

As described above, the heat sink 220 is formed by stacking the heat sink 222. In this case, the heat dissipation plate 222 may be stacked such that the first heat dissipation part 226 and the second heat dissipation part 228 are alternately disposed. 7 illustrates a case in which three heat sinks 222 are stacked, but this is only an embodiment of the present invention. In the heat sink 220 of the present invention, two or four heat sinks 222 are stacked. Can be configured.

In the heat sink 220 according to the present embodiment having the structure as described above, irregularities and the like may be formed in the heat dissipation unit 224 to improve the heat dissipation effect.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view showing a lighting apparatus according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the lighting apparatus shown in FIG. 1.

3 is a perspective view illustrating the heat sink illustrated in FIG. 1.

4 is a block diagram showing the configuration of the lighting apparatus shown in FIG.

5 is a cross-sectional view of the lighting apparatus shown in FIG. 1.

6 is an exploded perspective view showing a lighting apparatus according to another embodiment of the present invention.

FIG. 7 is an exploded perspective view illustrating the heat sink shown in FIG. 6.

FIG. 8 is a plan view of the heat sink shown in FIG. 6.

Explanation of symbols on the main parts of the drawings

100,200: lighting device 110: light emitting unit

112: light emitter 114: first printed circuit board

120,220: heat sink 122,222: heat sink

124,224: heat dissipation unit 130: main body

132: base 134: internal socket

136: step 140: control unit

141: second printed circuit board 150: cover

160: binder 226: first heat dissipation unit

228: second heat dissipation unit

Claims (20)

Heat sink; And A heat sink comprising a heat dissipation unit formed on the heat sink. The method of claim 1, The heat sink is characterized in that the heat sink is formed to penetrate through the heat sink. The method of claim 2, The heat dissipating unit includes a first heat dissipating unit and a second heat dissipating unit having a different shape. The method of claim 3, The heat sink is characterized in that a plurality of the heat sink is laminated so that the first heat dissipating portion and the second heat dissipating portion are arranged alternately. The method of claim 3, The first heat dissipation portion is a square shape, the second heat dissipation portion, characterized in that the * shape. The method according to any one of claims 1 to 5, The outer circumference of the heat dissipation unit is a heat sink, characterized in that formed in a circular shape. The method according to any one of claims 1 to 5, The heat sink is characterized in that the heat radiation fin is formed on the heat radiating portion. Light emitting unit; A heat sink dissipating heat generated by the light emitting unit; And Lighting device including a main body is formed with a stepped portion so that the outside air is supplied to the heat sink. The method of claim 8, wherein the heat sink, Heat sink; And Lighting device comprising a heat dissipation unit formed on the heat sink. The method of claim 9, The heat dissipation unit is a lighting device, characterized in that formed through the heat sink. The method of claim 10, The heat dissipation unit includes a first heat dissipation unit and a second heat dissipation unit having a different shape. The method of claim 11, The heat sink is a lighting device, characterized in that a plurality of the heat sink is laminated so that the first heat dissipating portion and the second heat dissipating portion are arranged alternately. The method of claim 11, The first heat dissipating unit is a rectangular shape, the second heat dissipating unit characterized in that the * shape. The method according to any one of claims 9 to 13, Illumination device, characterized in that the outer periphery of the heat dissipation unit is formed in a circular shape. The method according to any one of claims 9 to 13, Illumination device, characterized in that the radiating fin is formed on the radiating portion. The method of claim 8, A cover part surrounding the light emitting part; And And a cover coupled to the cover part and coupled to the heat sink to support the light emitting part toward the heat sink. Light emitting unit; A heat sink including a heat dissipation plate for dissipating heat generated by the light emitting unit, and a heat dissipation unit formed to penetrate the heat dissipation plate; And And a body coupled to the heat sink. A light emitting unit including a first light emitting body and a second light emitting body; A heat sink dissipating heat generated by the light emitting unit; A main body coupled with the heat sink; And And a control unit for dimming the first light emitter and the second light emitter. The method of claim 18, The color temperature of the first light emitter is 2000K ~ 4000K, the color temperature of the second light emitter is 5000K ~ 8000K, characterized in that. The method of claim 18, wherein the control unit, A dimming controller configured to generate a dimming control signal of at least one of the first light emitter and the second light emitter; And And a ballast configured to receive a dimming control signal from the dimming controller and to control lighting or illuminance of at least one of the first light emitting body and the second light emitting body.

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