JP2011134816A - Heat sink device for high-power led streetlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat sink device for a high-power LED streetlight. <P>SOLUTION: The heat sink device for the high-power LED streetlight has a base, heat sink columnar bodies are provided on the upper surface of the base, and air courses are formed between the heat sink columnar bodies. The heat sink columnar bodies are each molded such that the cross section thereof is formed into a polygon, such as a rhombus, a triangle and a pentagon, the upright ridge thereof is opposed to the side line of an upper edge of the base, and surfaces adjacent to each other on both sides of the upright ridge form a slope opposite to the side line of the upper edge of the base. Heat of an LED is quickly conducted to the heat sink columnar body through a heat conductor and a heat conductive tube to achieve heat sink operation. Outside air is introduced through the slope of the heat sink columnar body to flow in an air course and to flow around the heat sink columnar body, and consequently the heat sink columnar body receives the air from 360° to quickly carry and discharge the heat, thereby obtaining excellent heat sink effect. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a heat sink device, and more particularly, to a heat sink device of a high power LED street lamp that can improve a circulation rate of an air heat sink device, increase an opportunity of contact between the heat sink and the air, and improve a heat sink effect.

  Light emitting diodes (LEDs) have the advantages of high luminous intensity, power saving, long service life, etc., so they are used extensively in each electronic device and have gradually replaced traditional light bulbs in recent years. , And other lighting fixtures, such as street lamps.

Light emitting diodes have energy saving advantages, but there are still many improvements to consider when currently applied to street lighting, especially the heat sink problem after high power operation of light emitting diodes, as follows: is there:
1. The light source member that the light emitting diode constitutes, after lighting, the center of the light emitting diode instantaneously generates a very high temperature, and if the high temperature and the amount of heat cannot be quickly derived within a short time, there is a risk of burning. There is.
2. A known method is to install a metal lamp shell outside the lamp and dissipate heat from the lamp source member by contacting the lamp shell and the outside air, but the space with the lamp source member is still sealed. The amount of heat is accumulated in the lamp shell, and the lamp source member does not directly contact the lamp shell, so that the amount of heat is difficult to conduct and the heat sink efficiency is not good.
3. A known and more preferable method is to add a fin-type heat sink on the light source member and transmit the heat amount of the light-emitting diode to the outside. Air can only enter and flow between the fins via two directions, and the air in the other directions is blocked by the fins installed sideways, and the heat exchange efficiency of the heat sink and air is reduced. It is not good and the heat sink effect is limited.
4). The effect of the heat sink when the fin type heat sink is installed outside is relatively good, but it affects the aesthetics of the surface of the lamp, so it is rarely implemented in this way, and the heat sink is completely effective Can not demonstrate.
5. Considering the cost, the lamp shell and the heat sink are mostly made of aluminum or other alloys, but the heat conduction effect of aluminum is far from copper.

JP 2007-214472 A

  A main object of the present invention is to provide a heat sink device for a high power LED street lamp that improves the air flow rate in the heat sink device and achieves an optimum heat sink effect within a short time.

  Based on the above object, the heat sink of the high power LED street lamp provided by the present invention has a base, a heat sink pillar is provided on the top surface of the base, and an air path is formed between the heat sink pillars. Among them, the cross section of the heat sink column body is molded into a polygon such as a rhombus, a triangle, a pentagon, etc. Adjacent surfaces form slopes relative to the base top edge line.

  The base bottom side has an insertion groove extending inside the heat sink column, and the heat sink device further includes one or more heat transfer tubes and a heat transfer member combined with the heat transfer tubes, the heat transfer tubes being upright. The two ends are connected to the insertion grooves, the heat conductor is fixedly installed at the bottom end of the heat conductor, the plurality of heat conductors are connected, and the heat conductor is a heating object ( For example, it is localized on a light emitting diode lamp.

Based on this design, when the light emitting diode is in operation, the amount of heat is conducted to the heat conductor, and the heat conductor is conducted uniformly to each heat conduction tube, and is quickly conducted to the heat sink column of the base by the heat conduction tube. Diversify, quickly reduce the temperature of the whole light emitting diode, improve the service life of the light emitting diode.
At the same time, the cross section of the heat sink column of the present invention has a rhombus shape, so that external air is drawn to the adjacent slopes of any two heat sink columns and easily flows into the air path, Since the pillars are upright, the air that has entered the air path can flow around each heat sink pillar, and the heat sink pillar receives 360 degrees of wind and heat exchange between the heat sink pillar and air Efficiency can be improved and a quick heat sink effect can be achieved.

The present invention has the following features.
(1)
A base is provided, a heat sink pillar is provided on the top surface of the base, an air passage is formed between the heat sink pillars,
The cross section of the heat sink column is molded into a polygonal shape, the upright ridge line of the heat sink column is opposed to the base upper edge line, and the surfaces adjacent to both sides of the upright ridge line are the base upper edge A heat sink device for a high power LED street lamp, characterized in that a slope is formed relative to the wire.
(2) The heat sink device for a high power LED street light according to (1), wherein a cross section of the heat sink column is preferably a rhombus.
(3) The heat sink device for a high power LED street light according to (1), wherein an insertion groove extending to the inside of the heat sink column is opened on the base bottom side.
(4) The heat sink device further includes one or more heat-conducting tubes, and the heat-conducting tubes are U-shaped tubes having an upright shape, and are provided with insertion grooves at both ends thereof, respectively. Street heat sink device.
(5) The heat sink device for a high power LED streetlight according to (4), wherein liquid heat is incorporated in the heat conducting tube, and a capillary structure is attached to the inner wall of the heat conducting tube.
(6) The heat sink device further includes a heat conducting body, and the heat conducting body is installed at a bottom end of the heat conducting tube and connected to a plurality of adjacent heat conducting tubes (4).

As described above, the present invention has the following effects:
1. Since the cross section of the heat sink column of the present invention has a rhombus, external air is drawn to the adjacent slopes of any two heat sink columns and easily flows into the air path, while the heat sink columns are upright. Since it is columnar, the air that has entered the air passage can flow around each heat sink column, and the heat sink column receives 360 degrees of wind, improving the heat exchange efficiency of the heat sink column and air. A rapid heat sink effect can be achieved.
2. The amount of heat at the center of the light-emitting diode is directly conducted to the heat conducting body of the heat conducting section through contact at the bottom end, but is conducted to the heat conducting body through the heat conducting medium, and the heat conducting body conducts the amount of heat uniformly to the heat conducting tube. Quickly conduct heat through the heat conducting tube, quickly conduct the heat amount at the center of the light emitting diode to the heat sink pillar of the base, heat sink, reduce the temperature of the light emitting diode, improve the service life of the light emitting diode .
3. In the present invention, since the heat sink tube, the heat sink body, and the substrate are made of a copper material, the manufacturing cost can be reduced, and a suitable heat sink efficiency can be exhibited.

It is decomposition | disassembly explanatory drawing of this invention. FIG. 6 is an exploded explanatory view of another viewing angle of the present invention. It is decomposition | disassembly explanatory drawing applied to the LED street of this invention. It is sectional explanatory drawing applied to the LED street of this invention.

  In order to make the objects, effects, and structural features of the present invention easier to understand, embodiments of the present invention will be described in detail with reference to the drawings.

  Please refer to FIG. 1 and FIG.

The heat sink 1 of the high power LED street light described in the present invention includes a base 10 and a plurality of sets of heat conducting portions 11, of which
The base 10 is made of a highly heat-conducting material (for example, aluminum, copper, or an alloy thereof), and an accommodation space 100 is provided on the bottom side of the base 10, and a large amount of heat sink pillars 101 are provided on the upper surface of the base 10. An air path 103 is formed between adjacent heat sink pillars 101. The feature is that the heat sink column 101 is installed in an upright column shape, and the cross section of the heat sink column surface 101 is molded into a rhombus (polygon such as a triangle or a pentagon). The upright ridge line 1010 is opposed to the upper edge line of the base 10, and the surfaces adjacent to both sides of the upright ridge line 1010 form a slope 1011 relative to the upper edge line of the base 10. The bottom surface of the housing space 100 is provided with an insertion groove 102 that extends to the inside of the heat sink column 101.

  The heat conducting unit 11 includes a plurality of heat conducting tubes 110 and a heat conducting body 111 combined with the heat conducting tubes 110.

  The heat transfer tube 110 is a U-shaped tube body that is made of a highly heat conductive material (for example, copper or an alloy thereof) and has an upright shape. The heat transfer tube 110 is placed in the accommodation space 100 of the base 10. Both end portions thereof are connected to the insertion groove 102, respectively. Among them, a small amount of liquid water is built in the heat transfer tube 110, a further capillary structure is attached on the inner wall of the heat transfer tube 110, and the bottom end of the U-shaped heat transfer tube 110 is absorbed by the heat transfer principle of the heat pipe. Quickly conducts heat to the edge to obtain a quick heat sink effect.

  The heat conducting tube 110 can be installed in a long straight tube body based on the requirement for attachment, and the same effect can still be obtained.

  The heat conducting body 111 is made of a highly heat conducting material (for example, copper or an alloy thereof) and exhibits an elongated body that is stretched. The heat conducting body 111 is fixedly installed at the bottom end of the heat conducting pipe 110 and includes a plurality of heat conducting pipes. 110, and at the same time, the heat conductor 111 is localized on a heating object (for example, an LED lamp body), and the heat quantity of the heating object is quickly and evenly transferred to each heat conduction tube 110, Heat sink action can be performed.

  Please refer to FIG. 3 and FIG. 4 and refer to FIG. 1 and FIG.

  As shown in the figure, the heat sink 1 of the high power LED street light of the present invention is applied in the structure of the high power LED street light 2, and the high power LED street light 2 mainly includes a lamp shell 20, a globe 22, and a plurality of them. The lamp shell 20 and the globe 22 can form a space in which the lamp source member 21 and the heat sink device 1 can be accommodated. The light source member 21 positions the high power light emitting diode 210 on the long substrate 211 made of a highly heat conductive material (for example, copper or an alloy thereof) by screw joining or adhesive fixing method. The bottom end 2100 is installed through the back side of the substrate 211 to form a lamp body. The light source member 21 is installed inside the globe 22 and projects a light source provided by the light emitting diode 210 downward through the globe 22 to form an illumination effect.

  At the time of implementation, using a welding method, the heat conducting tubes 110 arranged in the same straight line are installed on the heat conducting body 111 at a predetermined interval to constitute the heat conducting unit 11, and a heat conducting medium 112 such as a heat conducting paste or a heat conducting silicon gel. The heat conductor is joined to the back surface side of the substrate 211 of the lamp source member 21. The base 10 of the heat sink device 1 is fixed to the inside of the lamp shell 20, and the end of the heat conducting tube 110 is connected to the insertion groove 102 of the base 10, and in the preferred embodiment of the present invention, the end of the heat conducting tube 110 and the insertion A heat conduction medium 113 such as a heat conduction paste or a heat conduction silicon gel is applied between the grooves 12 to improve heat conduction efficiency between the heat conduction tube 110 and the base 10. The globe 22 and the lamp shell 20 are further combined to constitute the high power LED street light 2.

  When the LED street light 2 is turned on, the amount of heat generated by the light emitting diode 210 is indirectly conducted on the heat conducting body 111 through the heat conducting medium 112, touches the bottom end 2100 of the light emitting diode 210, and then on the heat conducting body 111. Is directly conducted to each heat conducting tube 110 via the heat conducting body 111, and the heat conducting action of the heat conducting tube 110 quickly conducts the heat quantity of the light emitting diode 210 to the heat sink column 101 of the base 10. To do.

  Due to the structural design, the cross section of the heat sink column 101 is installed in a diamond shape, and the air of the LED street lamp 2 is made to enter through the vent hole 200 of the lamp shell 20, so that any two heat sink columns 101 can be formed. It can be made easy to flow into the air passage 103 by guiding the slopes 1011 adjacent to each other. In addition, since the heat sink column 101 is an upright column, the air in the air passage 103 can be drawn in and flown so as to surround each heat sink column 101, and the heat sink column 101 is subjected to 360 degrees of wind. The heat exchange efficiency between the heat sink column 101 and the air can be improved, and a quicker heat sink effect can be achieved.

  Further, in order to enhance the localization effect of the heat conducting part 11, a plurality of connecting columns 104 can be formed in the accommodating space 100 of the base 10 of the heat sink device 1, and the end of the connecting column 104 has a fixing hole 1040. The fixing hole 1110 corresponding to a predetermined position on the heat conductor 111 is opened. Further, a metal localization body 114 is provided on the heat conducting body 111, and the localization body 114 and the heat conducting body 111 are orthogonal to each other, and a fixing hole 1140 is opened at a predetermined position on the localization body 114.

  At the time of implementation, the fixing member 115, for example, a screw or a nail, is used to penetrate the fixing holes 1110 and 1140 of the heat conducting body 111 and the localization body 114, and further joined to the fixing holes 1040 of the connection pillar 104 to And by connecting the heat conducting section 11, the heat conducting tube 110 can be prevented from dropping out of the insertion groove 102, and the effect of stabilizing the localization can be achieved.

In the present invention, the preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way, and anyone who is familiar with the technology can make an equivalent scope without departing from the spirit and scope of the present invention. Of course, various fluctuations and hydration colors can be added.

1 heat sink device 10 base 100 accommodation space 101 heat sink column 1010
1011 Slope 102 Insertion groove 103 Air passage 104 Connection pillar 1040 Fixing hole 11 Heat conduction part 110 Heat conduction tube 111 Heat conduction body 1110 Fixing hole 112 Heat conduction medium 113 Heat conduction medium 114 Localization body 1140 Fixing hole 115 Fixing member 2 LED street lamp 20 Lamp shell 200 Vent hole 21 Light source member 210 Light emitting diode 2100 Bottom end 211 Substrate 22 Globe

Claims (6)

A base is provided, a heat sink pillar is provided on the top surface of the base, an air passage is formed between the heat sink pillars,
The cross section of the heat sink column is molded into a polygonal shape, the upright ridge line of the heat sink column is opposed to the base upper edge line, and the surfaces adjacent to both sides of the upright ridge line are the base upper edge A heat sink device for a high power LED street lamp, characterized in that a slope is formed relative to the wire. 2. The heat sink device for a high power LED street lamp according to claim 1, wherein a cross section of the heat sink pillar is preferably a rhombus. The heat sink device for a high power LED street light according to claim 1, wherein an insertion groove extending to the inside of the heat sink column is opened on the bottom side of the base. 4. The heat sink of a high power LED street light according to claim 3, wherein the heat sink device further includes one or more heat guide tubes, and the heat guide tubes are U-shaped tubes having an upright shape, and insertion grooves are provided at both ends thereof. apparatus. The heat sink device for a high power LED street lamp according to claim 4, wherein liquid heat is built in the heat guide tube and a capillary structure is attached to an inner wall of the heat guide tube. The heat sink device for a high power LED street light according to claim 4, wherein the heat sink device further includes a heat conductor, and the heat conductor is installed at a bottom end of the heat guide tube and connected to a plurality of adjacent heat guide tubes.

Images