CN103574315B - A kind of LED light fixture - Google Patents
A kind of LED light fixture Download PDFInfo
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- CN103574315B CN103574315B CN201210254049.0A CN201210254049A CN103574315B CN 103574315 B CN103574315 B CN 103574315B CN 201210254049 A CN201210254049 A CN 201210254049A CN 103574315 B CN103574315 B CN 103574315B
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- led light
- heat
- led lamp
- led
- shell
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- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 abstract description 6
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 239000012071 phase Substances 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Led Device Packages (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention relates to LED lighting technical field, particularly a kind of LED light fixture, for improving the heat conduction efficiency of LED light fixture, thus the service life of prolongation LED light fixture. The invention discloses a kind of LED light fixture, comprising: the housing with annular seal space; Be positioned at the LED light source of described housing bottom; Be positioned at the deflector on described housing sidewall outer surface; Be arranged in described annular seal space, heat gas phase, meet the liquid of cold liquid phase. The heat that LED light source produces, conducts heat by evaporation and the condensation of the liquid in annular seal space, improves LED light fixture heat conduction efficiency, thereby extends the service life of LED.
Description
Technical Field
The invention relates to the technical field of LED lighting, in particular to an LED lamp.
Background
At present, LED (light emitting diode) lamps are widely used in the illumination field due to their advantages of high lighting efficiency, energy saving, environmental protection, etc. The LED is a photoelectric device, only 25-30% of electric energy is converted into light energy in the working process, and the rest of electric energy is converted into heat energy, so that the temperature of the LED is increased, especially for a high-power LED lamp, a plurality of LED light sources are intensively arranged on one lamp, the LED light sources are often damaged due to overheating, and the service life of the LED lamp is seriously influenced; therefore, heat dissipation becomes an important factor affecting the service life of the LED lamp.
Existing LED light fixtures generally include: the LED light source comprises an aluminum-based circuit board provided with an LED light source, a base, the aluminum-based circuit board arranged on one surface of the base and a radiating fin arranged on the other surface of the base. The heat generated by the LED light source is dissipated through the aluminum-based circuit board, the base and the radiating fins, but the LED lamp is cooled through the multi-stage radiating medium, so that the thermal resistance links are more, a heat sink phenomenon occurs when each radiating medium transmits heat to the next stage, the heat conduction efficiency is low, the heat accumulation of the lamp is caused, and the service life of the LED lamp is influenced.
Disclosure of Invention
The invention provides an LED lamp which is used for improving the heat conduction efficiency of the LED lamp and prolonging the service life of an LED.
The invention provides an LED lamp, which comprises: a housing having a sealed cavity; the LED light source is positioned at the bottom of the shell; a baffle located on an outer surface of the housing sidewall; and the liquid is positioned in the sealed cavity and meets the hot gas phase and the cold liquid phase.
Further, in the LED lamp, a longitudinal section of the side wall of the housing is circular arc; the longitudinal section of the guide plate is arc-shaped.
Preferably, in the LED lamp, an inner surface of the side wall of the housing has a capillary structure.
Preferably, in the LED lamp, the capillary structure is a groove type or a sintered type.
Preferably, in the LED lamp, the sintered metal powder is formed on the inner surface of the side wall of the housing.
Preferably, in the LED lamp, the metal powder particles are copper powder particles.
Preferably, in the LED lamp, the groove is a plurality of V-shaped grooves formed in an up-down direction on an inner surface of the side wall of the housing.
According to the technical scheme, the LED lamp provided by the invention dissipates heat as follows: the heat generated by the LED is firstly conducted to the bottom of the shell and then conducted to the liquid in the sealed cavity of the shell, the liquid is gasified to form steam after absorbing the heat, then the steam rises to the upper part of the sealed cavity and exchanges heat with the outside air through the guide plate, the steam is condensed into liquid after being cooled at the upper part of the sealed cavity and flows back to the bottom of the sealed cavity along the side wall of the shell, and the circulation is repeated until the temperature in the sealed cavity is the same as the outside temperature. Compared with the prior art, the LED lamp provided by the invention can obviously reduce the heat deposition phenomenon and improve the heat conduction efficiency, thereby prolonging the service life of the LED.
Drawings
Fig. 1 is a schematic structural diagram of an LED lamp in an embodiment of the present invention.
Detailed Description
The existing LED lamp generally radiates heat through multi-stage radiating media, but in the radiating process, thermal resistance links are more, heat sink phenomenon occurs when each radiating medium transmits heat to the next stage, the heat conduction efficiency is low, and the heat accumulation of the lamp is caused, so that the service life of the LED lamp is influenced.
In view of this, the present invention provides an improved technical solution, in which heat is conducted out by evaporation and condensation of liquid in a sealed cavity of a housing, so as to improve heat conduction efficiency of an LED lamp, thereby prolonging the service life of an LED.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1, the LED lamp provided by the present invention includes: a housing 10 having a sealed cavity; an LED light source 20 located at the bottom of the housing 10; a baffle 30 located on the outer surface of the sidewall of the housing 10; a liquid 40 in the sealed chamber that is in a hot gas phase and a cold liquid phase. Wherein,
the shape of the housing 10 can be made into any shape, preferably, the longitudinal section of the side wall of the housing 10 is circular arc; the inside is a sealed cavity, and the sealed cavity is divided into two parts, namely an evaporation heated section 11 and a condensation section 12 for convenience of description and understanding. The inner surface of the side wall is provided with a capillary structure, and the capillary structure comprises a groove type structure and a sintering type structure; wherein, the groove type is a plurality of V-shaped grooves formed on the inner surface of the side wall of the housing 10; the sintered type is a metal powder particle formed on the inner surface of the side wall of the case 10, and preferably, the metal powder particle is a copper powder particle. The capillary structure functions three times: the liquid condensed at the upper part of the sealed cavity of the shell 10 is refluxed to the lower part of the sealed cavity; providing a channel for the heat transfer of the side walls of the housing 10 with the liquid and vapor; pores for generating capillary pressure are provided.
The guide plate 30 covers the outer surface of the side wall of the shell 10, and the shape of the guide plate 30 is the same as that of the side wall of the shell 10, so that the guide plate 30 is completely contacted with the side wall of the shell 10; preferably, the longitudinal cross section of the air deflector 30 is circular arc, when the air deflector 30 exchanges heat with air, the air deflector 30 can make the air around the air deflector 30 flow up and down, that is, the air deflector 30 has the function of guiding air.
The liquid 40 has the characteristics of hot gas phase and cold liquid phase at normal ambient temperature, and can be selected according to the temperature range in which the housing 10 works, namely, according to the heat generated by the LED light source 20. The liquid 40 is positioned in the evaporation heated section 11 of the sealed cavity of the shell 10; the amount of the liquid 40 is not excessive, and the liquid level is preferably within the evaporation heating section A of the sealed cavity and does not exceed the evaporation heating section 11 of the sealed cavity, so that the condensation section 12 does not have enough space and the heat conduction efficiency is not reduced; certainly, the liquid 40 should not be too little so as to prevent the evaporation heated section 11 from being locally dried or the generated heat cannot be dissipated in time, which may cause the LED light source 20 to be overheated and affect the service life of the LED lamp.
When the LED lamp provided by the embodiment is used, heat energy generated by the LED light source 20 is transferred to the liquid 40 through the shell 10, the liquid 40 absorbs heat to be gasified, at the moment, the pressure in the lower space of the sealed cavity is increased, steam flows to the upper space of the sealed cavity under the action of the pressure, the steam is condensed into the liquid 40 to flow back to the lower part of the sealed cavity after reaching the wall of the upper sealed cavity, meanwhile, a large amount of heat is released to the shell 10 and the flow guide plate 30, the temperature of the air in contact with the flow guide plate 30 is increased due to the heat absorption, the density of the air is reduced, so that the air with higher temperature flows upwards, a cyclone effect is generated in the area near the flow guide plate 30, the heat released by the condensation of the steam is rapidly transferred to the air, and the heat; the above steps are repeated until the temperature in the sealed cavity of the shell 10 is the same as the outside temperature.
In summary, the LED lamp provided by the invention utilizes the characteristics of liquid phase when heated and liquid phase when cooled to transfer the heat generated by the LED light source to the flow guide plate, and then the heat exchange is performed between the flow guide plate and the external air, so that the heat deposition phenomenon is reduced; therefore, compared with the prior art, the LED lamp provided by the invention has higher heat conduction efficiency, so that the service life of an LED is prolonged.
In addition, the LED lamp provided by the invention adopts the guide plate with the function of guiding flow in the vertical direction, so that heat exchange can be carried out with air without external power, and the energy is saved; and the LED lamp can be made into various shapes by adopting the heat dissipation mode without considering the installation space of a radiator and the like.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. An LED lamp, comprising:
a housing having a sealed cavity;
the LED light source is positioned at the bottom of the shell;
the guide plate is positioned on the outer surface of the side wall of the shell, and the longitudinal section of the side wall of the shell is arc-shaped; the longitudinal section of the guide plate is arc-shaped, the guide plate covers the outer surface of the side wall of the shell, and the shape of the guide plate is the same as that of the side wall of the shell, so that the guide plate is completely contacted with the side wall of the shell;
and the liquid level of the liquid is positioned in the evaporation heating section of the sealed cavity.
2. The LED light fixture of claim 1 wherein the inner surface of the housing sidewall has a capillary structure.
3. The LED lamp of claim 2 wherein the capillary structure is grooved or sintered.
4. The LED lamp of claim 3 wherein the sintered form is a metal powder particle formed on the inner surface of the housing sidewall.
5. The LED lamp of claim 4 wherein the metal powder particles are copper powder particles.
6. The LED light fixture of claim 3 wherein the grooves are a plurality of V-shaped grooves formed in an up-down direction on the inner surface of the side wall of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254049.0A CN103574315B (en) | 2012-07-20 | 2012-07-20 | A kind of LED light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254049.0A CN103574315B (en) | 2012-07-20 | 2012-07-20 | A kind of LED light fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103574315A CN103574315A (en) | 2014-02-12 |
| CN103574315B true CN103574315B (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210254049.0A Active CN103574315B (en) | 2012-07-20 | 2012-07-20 | A kind of LED light fixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN103574315B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654980B (en) * | 2017-08-29 | 2019-11-29 | 江苏浦亚照明科技股份有限公司 | High-power LED chip radiator structure |
Citations (9)
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|---|---|---|---|---|
| CN101202270A (en) * | 2006-12-15 | 2008-06-18 | 富准精密工业(深圳)有限公司 | LED module set and method of manufacture |
| CN101457918A (en) * | 2008-12-25 | 2009-06-17 | 英飞特电子（杭州）有限公司 | Liquid cooling LED lamp |
| CN201368348Y (en) * | 2009-01-20 | 2009-12-23 | 环宇中华集成电路设计股份有限公司 | High power led lighting lamp and heat dissipation structure thereof |
| CN201412804Y (en) * | 2009-05-27 | 2010-02-24 | 王治效 | Super-power semiconductor lighting source base plate direct-cooling radiator |
| CN101852358A (en) * | 2010-06-25 | 2010-10-06 | 湖南佑立医疗科技有限公司 | LED lamp |
| CN101900313A (en) * | 2010-08-12 | 2010-12-01 | 华南理工大学 | Annular steam cavity radiating module for high-power LED |
| CN201898127U (en) * | 2010-10-27 | 2011-07-13 | 俞仁企业股份有限公司 | Radiator |
| CN202002060U (en) * | 2011-03-17 | 2011-10-05 | 林勇 | LED lamp and heat dissipation structure |
| CN202708721U (en) * | 2012-07-20 | 2013-01-30 | 湖北凯美能源技术有限公司 | Light-emitting diode (LED) lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120080022A (en) * | 2011-01-06 | 2012-07-16 | 삼성엘이디 주식회사 | Illuminating device |
-
2012
- 2012-07-20 CN CN201210254049.0A patent/CN103574315B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202270A (en) * | 2006-12-15 | 2008-06-18 | 富准精密工业(深圳)有限公司 | LED module set and method of manufacture |
| CN101457918A (en) * | 2008-12-25 | 2009-06-17 | 英飞特电子（杭州）有限公司 | Liquid cooling LED lamp |
| CN201368348Y (en) * | 2009-01-20 | 2009-12-23 | 环宇中华集成电路设计股份有限公司 | High power led lighting lamp and heat dissipation structure thereof |
| CN201412804Y (en) * | 2009-05-27 | 2010-02-24 | 王治效 | Super-power semiconductor lighting source base plate direct-cooling radiator |
| CN101852358A (en) * | 2010-06-25 | 2010-10-06 | 湖南佑立医疗科技有限公司 | LED lamp |
| CN101900313A (en) * | 2010-08-12 | 2010-12-01 | 华南理工大学 | Annular steam cavity radiating module for high-power LED |
| CN201898127U (en) * | 2010-10-27 | 2011-07-13 | 俞仁企业股份有限公司 | Radiator |
| CN202002060U (en) * | 2011-03-17 | 2011-10-05 | 林勇 | LED lamp and heat dissipation structure |
| CN202708721U (en) * | 2012-07-20 | 2013-01-30 | 湖北凯美能源技术有限公司 | Light-emitting diode (LED) lamp |
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| Publication number | Publication date |
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| CN103574315A (en) | 2014-02-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 430033, 20 B06, No. 7 South Central Road, Wuchang District, Hubei, Wuhan, China Patentee after: Changjiang intelligent control technology (Wuhan) Co.,Ltd. Address before: 430033, 20 B06, No. 7 South Central Road, Wuchang District, Hubei, Wuhan, China Patentee before: HUBEI KAIMEI ENERGY TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An LED lamp Effective date of registration: 20230206 Granted publication date: 20160511 Pledgee: Bank of China Limited Wuhan Jianghan sub branch Pledgor: Changjiang intelligent control technology (Wuhan) Co.,Ltd. Registration number: Y2023420000020 |