CN105485630A - Led street lamp - Google Patents
Led street lamp Download PDFInfo
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- CN105485630A CN105485630A CN201410482282.3A CN201410482282A CN105485630A CN 105485630 A CN105485630 A CN 105485630A CN 201410482282 A CN201410482282 A CN 201410482282A CN 105485630 A CN105485630 A CN 105485630A
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- heat conduction
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- led street
- street lamp
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Abstract
The invention discloses an LED street lamp. The street lamp comprises a lamp body, a lamp pole and a heat dissipation system. The heat dissipation system comprises a heat conduction cavity and a heat conduction transmission ring pipe; an evaporation chamber and a compensation chamber which are communicated are formed in the heat conduction cavity, and the two ends of the heat conduction transmission ring pipe are communicated with the evaporation chamber and the compensation chamber respectively; the evaporation chamber of the heat conduction cavity is in contact with the heating face of the lamp body, and the heat conduction cavity is vacuumized and filled with liquid working media; a capillary structure is arranged in the compensation chamber and provides driving force for the internal circulation of the heat dissipation system; and the liquid working media absorb heat in the evaporation chamber to be gasified to generate steam, the steam enters the heat conduction transmission ring pipe and is condensed when meeting cold in the flowing process to form condensates, and the condensates flow back to the compensation chamber. According to the LED street lamp, the phase change heat transfer technology is utilized for transferring heat generated by the lamp body to the heat conduction transmission ring pipe for radiating, the heat dissipation area and the heat dissipation efficiency are greatly improved, and the good heat dissipation effect is achieved.
Description
Technical field
The present invention relates to LED technology field, relate more specifically to a kind of LED street lamp.
Background technology
LED is a kind of semiconductor devices that electric energy can be converted into luminous energy, and it changes the principle of the luminescence of incandescent lamp tungsten filament and the luminescence of electricity-saving lamp tricolor powder, and adopts electroluminescence.In modern society because LED volume is little, the life-span is long, light efficiency is high, radiationless with advantages such as low-power consumption, be widely used in the fields such as domestic lighting, office lighting and public illumination.
Wherein, modal in public illumination field is LED street lamp.LED street lamp is owing to needing higher brightness, and its Design of Luminaires adopts the mode of high-power LED chip array usually.For ensureing the reliability requirement of LED street lamp, the high-power LED chip of array concentrates the heat of generation, effectively must be discharged in surrounding air at its chip electronic wiring board back side.Method the most frequently used is at present on the light fixture of LED street lamp, arrange metal (mainly aluminium) radiator, if China Patent Publication No. is a kind of modular high-power LED street lamp structure disclosed in CN2012165942U, be then the main sinking path adopting the huge metal heat sink of metal volume to be used as LED chip in its LED street lamp structure.
Although the radiator structure that above-mentioned existing LED street lamp adopts can reach radiating effect, there is following shortcoming: 1, metal heat sink is heavier, metal material consumption is large, and cost is higher and installation is inconvenient; 2, compare with sodium vapor lamp street lamp with conventional electricity-saving lamp street lamp, LED street lamp, due to the restriction of radiator large volume, causes whole light fixture volume larger; 3, only dispel the heat by radiator, area of dissipation is effective, and efficiency is lower.
Given this, a kind of small size, low cost and have the LED street lamp of better heat dispersion are provided to provide.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of small size, low cost and have the LED street lamp of better heat dispersion.
In order to solve the problem, the invention provides a kind of LED street lamp, it lamp stand comprising lamp main body and be connected with this lamp main body, described LED street lamp also comprises a cooling system, described cooling system comprises heat conduction cavity and heat conduction transmission endless tube, described heat conduction inside cavity is formed with the vaporization chamber and compensated chamber that are interconnected, described heat conduction transmission endless tube one end is connected with described vaporization chamber, the other end is connected with described compensated chamber, and the heating face of described lamp main body contacts to conduct heat in vaporization chamber with the vaporization chamber of described heat conduction cavity;
Vacuumize in described heat conduction cavity and be perfused with liquid working substance, capillary structure is provided with in described compensated chamber, the inner loop that the capillary draft that capillary structure produces is cooling system provides driving force, liquid working substance absorbs heat and vaporizes and produce steam in vaporization chamber, steam enters heat conduction transmission endless tube and in flow process, meets cold coagulating and form condensate liquid, and condensate stream goes back to compensated chamber.
Preferably, LED street lamp as claimed in claim 1, is characterized in that: described lamp stand is the heat conduction lamp stand be made up of Heat Conduction Material, and described heat conduction transmission endless tube extends to lamp stand from lamp main body and contacts with the surface of lamp stand.
Preferably, LED street lamp as claimed in claim 2, is characterized in that: described heat conduction transmission endless tube bends dish and is located on a sheet metal, and described sheet metal is fitted in the surface of described lamp stand.
Preferably, described heat conduction transmission endless tube is serpentine coil shape.
Preferably, described sheet metal is globoidal structure or cylindrical structure and is fitted in the periphery of described lamp stand.
Preferably, described sheet metal is the aluminum alloy flake adopting aluminium alloy to make.
Preferably, described lamp stand is hollow structure, and described sheet metal is fitted in the inner surface of described lamp stand.
Preferably, described heat conduction cavity is aluminum cavity.
Preferably, described heat conduction transmission endless tube is aluminum pipe fitting.
Preferably, described liquid working substance is HFC-134a.
Compared with prior art, cooling system set by LED street lamp provided by the present invention utilizes phase-change heat transfer technology the heat that lamp main body produces to be quickly transferred to heat conduction transmission endless tube to dispel the heat, greatly improve area of dissipation and radiating efficiency, realize good radiating effect; Owing to avoiding using large volume and heavy weight metal heat sink, significantly reduce the weight and volume of LED street lamp, both reduce costs also convenient installation; Lamp main body, lamp stand and cooling system three parts are relatively independent, are just combined into an entire system when mounted, both ensured modularization and the productibility of parts, ensure again validity and the feasibility of system, conveniently realize industrialization and produce.
By following description also by reference to the accompanying drawings, the present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of LED street lamp one embodiment of the present invention.
Fig. 2 is the structural representation after the decomposition of LED street lamp shown in Fig. 1.
Fig. 3 is the structural representation of cooling system in LED street lamp of the present invention.
Fig. 4 is the structural representation of another embodiment of heat conduction transmission endless tube in LED street lamp of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in embodiment, reference numerals similar in accompanying drawing represents similar assembly.Obviously, be only the present invention's part embodiment below by the embodiment of description, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 to Fig. 4 illustrates an embodiment of LED street lamp of the present invention.See figures.1.and.2, LED street lamp 10 of the present invention comprises lamp main body 110, lamp stand 120 and cooling system 130, wherein, lamp main body 110 comprise substrate 111 and the high-power LED chip array 112 be located on substrate 111 front to provide base lighting function, lamp stand 120 is connected with lamp main body 110 to support this lamp main body 110, and cooling system 130 contacts to absorb heat that lamp main body produces and utilizes phase-change heat transfer technology to provide good radiating effect with lamp main body 110.
With reference to Fig. 3, in some embodiment, such as, in the present embodiment, cooling system 130 comprises heat conduction cavity 131 and heat conduction transmission endless tube 132, described heat conduction cavity 131 inside is formed with the vaporization chamber 131a and compensated chamber 131b that are interconnected, described heat conduction transmission endless tube 132 one end is connected with described vaporization chamber 131a, and the other end is connected with described compensated chamber 131b, thus heat conduction cavity 131 and heat conduction are transmitted endless tube 132 and is connected and forms confined space.Wherein, the vaporization chamber of heat conduction cavity 131 contacts with the heating face (such as the back side of substrate 111) of described lamp main body 110, thus the heat produced by high-power LED chip array 112 in lamp main body 110 can be transmitted in vaporization chamber, described heat conduction transmission endless tube 132 extends to lamp stand 120 from lamp main body 110 and contacts with the surface of lamp stand 120, in the present embodiment, lamp stand 120 is the heat conduction lamp stands adopting the higher metal material of thermal conductivity factor to make, heat conduction transmission endless tube 132 can conduct heat to by contacting with lamp stand 210 and lamp stand 120 realizes large area dispel the heat.
Described heat conduction cavity 131 and heat conduction are transmitted the confined space inside that endless tube 132 formed and are vacuumized and be perfused with liquid working substance, preferably, described liquid working substance selects HFC-134a, also be R134a, R134a boiling point is lower, colourless nontoxic, chemical stability is fine, adopt R134a not only good heat conduction effect, but also there is low cost, security comparatively advantages of higher.Understandably, according to specific needs, liquid that other boiling point is lower also can be selected as described liquid working substance, such as, select water, ammoniacal liquor, acetone or methyl alcohol etc.Described heat conduction cavity 131 is aluminum cavity, and heat conduction transmission endless tube 132 be aluminum pipe fitting, adopts the heat conduction cavity of aluminum and heat conduction to transmit endless tube 132 and can realize good heat-conducting effect and cost is lower.Certainly, other also can be selected to have better heat conductivility and not with the material such as metallic copper of liquid working substance generation chemical reaction to make described heat conduction cavity 131 and endless tube 132 is transmitted in heat conduction.In the present embodiment, be provided with capillary structure (not shown) in described compensated chamber 131b, the capillary draft that capillary structure produces provides driving force for the inner loop of cooling system 130.
In some embodiment, such as, in the present embodiment, heat conduction transmission endless tube 132 bends dish and is located on a sheet metal 132a, and preferably, described sheet metal 132a is the aluminum alloy flake adopting aluminium alloy to make, and certainly, other materials such as magnesium alloy also can be adopted to make.In the preferred embodiment, described heat conduction transmission endless tube 132 in serpentine coil shape, and the structure (as shown in Figure 3) that can be designed in genesis analysis on sheet metal 132a or laterally distributed structure (as Fig. 4 indicate 133).Based on said structure design, greatly can increase heat exchange area, improve radiating efficiency and improve radiating effect.
In some embodiment, such as, in the present embodiment, the bottom surface of described heat conduction cavity 131 is flat surfaces, this flat surfaces is fitted on the heating face of lamp main body 110 by welding or the mode such as bonding, and the sheet metal 132a with heat conduction transmission endless tube 132 be globoidal structure or cylindrical structure and equally to weld or bonding mode is fitted on the periphery of described lamp stand 120.In the present embodiment, the bottom surface of heat conduction cavity 131 is fitted in the back side of substrate 111, and described heat conduction transmission endless tube 132 is fitted in the inner surface of described lamp stand 120.
Continue with reference to Fig. 3, when LED street lamp is in running order, high-power LED chip array in lamp main body 110 will produce amount of heat, these heats produced by absorb by the liquid working substance in vaporization chamber 131a, thus steam is produced in vaporization chamber 131a, steam enters heat conduction transmission endless tube 132 and in the process flowing through lamp stand 120 surface, meets cold coagulating and form condensate liquid, owing to being provided with capillary structure in compensated chamber 131b, under the effect of capillary draft, condensate stream returns compensated chamber 131b, and now, negative pressure is produced due to the evaporation of liquid working substance in vaporization chamber 131a, liquid working substance in compensated chamber 131b will be inhaled into vaporization chamber 131a, circulation like this, realize good heat conduction and heat radiation effect.
As mentioned above, cooling system set by LED street lamp provided by the present invention utilizes phase-change heat transfer technology the heat that lamp main body produces to be quickly transferred to heat conduction transmission endless tube to dispel the heat, greatly improve area of dissipation and radiating efficiency, realize good radiating effect; Owing to avoiding using large volume and heavy weight metal heat sink, significantly reduce the weight and volume of LED street lamp, both reduce costs also convenient installation; Lamp main body, lamp stand and cooling system three parts are relatively independent, are just combined into an entire system when mounted, both ensured modularization and the productibility of parts, ensure again validity and the feasibility of system, conveniently realize industrialization and produce.
It should be noted that, the capillary structure in the present invention in other structure of lamp main body and cooling system is well known to those skilled in the art, and does not repeat them here.
More than in conjunction with most preferred embodiment, invention has been described, but the present invention is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present invention amendment, equivalent combinations.
Claims (10)
1. a LED street lamp, the lamp stand comprising lamp main body and be connected with this lamp main body, it is characterized in that: described LED street lamp also comprises a cooling system, described cooling system comprises heat conduction cavity and heat conduction transmission endless tube, described heat conduction inside cavity is formed with the vaporization chamber and compensated chamber that are interconnected, described heat conduction transmission endless tube one end is connected with described vaporization chamber, the other end is connected with described compensated chamber, and the heating face of described lamp main body contacts to conduct heat in vaporization chamber with the vaporization chamber of described heat conduction cavity;
Vacuumize in described heat conduction cavity and be perfused with liquid working substance, capillary structure is provided with in described compensated chamber, the inner loop that the capillary draft that capillary structure produces is cooling system provides driving force, liquid working substance absorbs heat and vaporizes and produce steam in vaporization chamber, steam enters heat conduction transmission endless tube and in flow process, meets cold coagulating and form condensate liquid, and condensate stream goes back to compensated chamber.
2. LED street lamp as claimed in claim 1, is characterized in that: described lamp stand is the heat conduction lamp stand be made up of Heat Conduction Material, and described heat conduction transmission endless tube extends to lamp stand from lamp main body and contacts with the surface of lamp stand.
3. LED street lamp as claimed in claim 2, is characterized in that: described heat conduction transmission endless tube bends dish and is located on a sheet metal, and described sheet metal is fitted in the surface of described lamp stand.
4. LED street lamp as claimed in claim 3, is characterized in that: described heat conduction transmission endless tube is serpentine coil shape.
5. LED street lamp as claimed in claim 3, is characterized in that: described sheet metal is globoidal structure or cylindrical structure and is fitted in the periphery of described lamp stand.
6. LED street lamp as claimed in claim 3, is characterized in that: described sheet metal is the aluminum alloy flake adopting aluminium alloy to make.
7. the LED street lamp as described in any one of claim 2-6, is characterized in that: described lamp stand is hollow structure, and described sheet metal is fitted in the inner surface of described lamp stand.
8. LED street lamp as claimed in claim 1, is characterized in that: described heat conduction cavity is aluminum cavity.
9. LED street lamp as claimed in claim 1, is characterized in that: described heat conduction transmission endless tube is aluminum pipe fitting.
10. LED street lamp as claimed in claim 1, is characterized in that: described liquid working substance is HFC-134a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482282.3A CN105485630A (en) | 2014-09-19 | 2014-09-19 | Led street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482282.3A CN105485630A (en) | 2014-09-19 | 2014-09-19 | Led street lamp |
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| Publication Number | Publication Date |
|---|---|
| CN105485630A true CN105485630A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410482282.3A Pending CN105485630A (en) | 2014-09-19 | 2014-09-19 | Led street lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471693A (en) * | 2018-03-20 | 2018-08-31 | 联想(北京)有限公司 | A kind of vaporation-type cooling system |
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| CN101598320A (en) * | 2009-07-14 | 2009-12-09 | 史杰 | The LED lamp adopts the heat-pipe radiating apparatus of enhanced evaporation section |
| CN101608788A (en) * | 2009-07-21 | 2009-12-23 | 史杰 | The LED lamp adopts the heat radiation device for loop heat pipe of enhanced evaporation section |
| CN101650016A (en) * | 2009-08-07 | 2010-02-17 | 雷霆 | High heat lamp for separating lamp body from radiator |
| CN102454970A (en) * | 2010-10-20 | 2012-05-16 | 湖南明和灯光设备有限公司 | Heat pipe heat radiator of high-power LED street lamp |
| CN103133955A (en) * | 2011-12-05 | 2013-06-05 | 常熟卓辉光电科技有限公司 | Integral light-emitting diode (LED) street lamp using circulating heat dissipation system |
| CN204153576U (en) * | 2014-09-19 | 2015-02-11 | 苏州皓璟兄弟照明设计工程有限公司 | Led street lamp |
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2014
- 2014-09-19 CN CN201410482282.3A patent/CN105485630A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598320A (en) * | 2009-07-14 | 2009-12-09 | 史杰 | The LED lamp adopts the heat-pipe radiating apparatus of enhanced evaporation section |
| CN101608788A (en) * | 2009-07-21 | 2009-12-23 | 史杰 | The LED lamp adopts the heat radiation device for loop heat pipe of enhanced evaporation section |
| CN101650016A (en) * | 2009-08-07 | 2010-02-17 | 雷霆 | High heat lamp for separating lamp body from radiator |
| CN102454970A (en) * | 2010-10-20 | 2012-05-16 | 湖南明和灯光设备有限公司 | Heat pipe heat radiator of high-power LED street lamp |
| CN103133955A (en) * | 2011-12-05 | 2013-06-05 | 常熟卓辉光电科技有限公司 | Integral light-emitting diode (LED) street lamp using circulating heat dissipation system |
| CN204153576U (en) * | 2014-09-19 | 2015-02-11 | 苏州皓璟兄弟照明设计工程有限公司 | Led street lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471693A (en) * | 2018-03-20 | 2018-08-31 | 联想(北京)有限公司 | A kind of vaporation-type cooling system |
| US11441847B2 (en) | 2018-03-20 | 2022-09-13 | Lenovo (Beijing) Co., Ltd. | Evaporative cooling system |
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Application publication date: 20160413 |
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