CN102367954A - Radiator of LED (light emitting diode) lamp - Google Patents
Radiator of LED (light emitting diode) lamp Download PDFInfo
- Publication number
- CN102367954A CN102367954A CN2011103221549A CN201110322154A CN102367954A CN 102367954 A CN102367954 A CN 102367954A CN 2011103221549 A CN2011103221549 A CN 2011103221549A CN 201110322154 A CN201110322154 A CN 201110322154A CN 102367954 A CN102367954 A CN 102367954A
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- radiator
- light fixture
- led light
- copper post
- led
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention belongs to the technical field of lighting, and in particular discloses a radiator of an LED (light emitting diode) lamp. The radiator comprises a heat radiating body, wherein the middle of the heat radiating body is provided with a heat-conducting copper pillar, the upper end of the heat radiating body is a light source assembly, the light source assembly is fixed on the upper end of the heat radiating body, and the heat radiating body is made of a flexible graphite material. The radiator of the LED lamp provided by the invention has the characteristics of light weight, low cost, and good heat dissipation effect.
Description
Technical field
The present invention relates to lighting technical field, more particularly, the present invention relates to a kind of radiator of LED light fixture.
Background technology
Owing to LED (Light Emitting Diode, light emitting diode) is a kind of solid-state cold light source, compare with conventional fluorescent, incandescent lamp, gas-discharge lamp etc. to have environmental protection; Pollution-free, little power consumption, light efficiency is high; Characteristics such as the life-span is long are therefore by the increasing lighting field that is applied to.But LED is a kind of electroluminescent device, and under the effect of extra electric field, the energy of 10-20% is converted into luminous energy, and the energy of 80-90% is converted into heat energy.When the inner energy of LED can not effectively discharge at very little chip internal, chip temperature will raise, and causes the non-uniform Distribution of thermal stress, thereby caused luminous efficiency to reduce, corresponding reduction of life-span simultaneously.LED light fixture in the market adopts passive heat radiation mode the most widely, and this mode mainly is to rely on the radiator of light fixture and the free convection of air, and the heat that LED is produced distributes.Mostly this radiator is that aluminium alloy manufacturing face becomes, and needs area of dissipation big, thereby causes weight big, and cost is high, and radiating effect is undesirable.
Summary of the invention
To above-mentioned technical problem, the technical problem that the present invention need solve provide a kind of in light weight, cost is low, the radiator of the LED light fixture of good heat dissipation effect.
Technical scheme of the present invention is achieved in that a kind of radiator of LED light fixture; Comprise radiator, be provided with heat conduction copper post in the middle of the radiator, the radiator upper end is a light source assembly; Light source assembly is fixed in the upper end of radiator, and said radiator is that flexible graphite material is made.
Further: in the radiator of above-mentioned LED light fixture, in flexible graphite material, also add polypropylene, the part by weight of polypropylene and soft graphite is (0.15-0.35): 1.Described radiator surface is provided with radiating fin.Radiating fin becomes even number to arrange.Described radiator surface is provided with nickel coating, and nickel coating thickness is 15-25nm.Scribbles silver-gray heat conductive silica gel in the middle of described light source assembly and the radiator, the thermal conductivity factor of this heat conductive silica gel is 2.5W/MK, thermal resistance be 0.015 (℃-in
2/ W).The surface roughness of the upper surface of described radiator upper surface and copper post is less than or equal to 1.0.The copper post is a kind of in cylinder table, cylinder, square column platform, the square body, and the copper post takes shape in the radiator, and is concordant on copper post upper end and the radiator.
Compared with prior art, the radiator of LED light fixture of the present invention, its radiator are that flexible graphite material is made.Graphite is to belong to the crystal that mixes of bonding.Carbon atom in the graphite combines with the σ key with three adjacent carbon atoms with the sp2 hybridized orbit, form the honey comb like plane of regular hexagon layer structure, and each carbon atom also has a 2p track, and a 2p electronics is wherein arranged.These p tracks are all parallel to each other again, and perpendicular to the plane that carbon atom sp2 hybridized orbit constitutes, formed big π key.Thereby these pi-electrons are can be on whole carbon atom plane movable, the character of metalloid key.Then rely on intermolecular force (Van der Waals force) to combine between the layer of planar structure and the layer, form graphite crystal.Graphite has good heat-conducting; The single facet thermal conductivity factor can reach 2200W/MK; And the thermal conductivity factor of aluminium is 237W/MK, copper be 401W/MK, the thermal conductivity factor that this shows graphite is nearly 10 times of aluminium; Therefore manufacture the radiator of light fixture with graphite, can the temperature that LED lamp pearl produces have been loose rapidly and go out.This graphite material is a soft graphite, and the inside is added with a certain proportion of polypropylene, at 5-6 ten thousand atmospheric pressure (5-6) * 10
3MPa) and under 1500 ± 50 degree high temperature Celsius polypropylene molecule is dissolved in the graphite, thereby make its intensity and toughness increase, overcome its frangible shortcoming.This graphite radiating surface is provided with radiating fin, thereby strengthens area of dissipation, reduces heatsink weight, reduces cost.Nickel Plating Treatment is carried out on the diffusing body surface of graphite in addition, and its purpose is to increase intensity of radiator, also makes simultaneously to have metal-like.So that the radiator of this LED light fixture possesses is in light weight, cost is low and the characteristics of good heat dissipation effect.
Description of drawings
Fig. 1 is the explosive view of LED lamp radiator of the present invention;
Fig. 2 is the lamp pearl heat sink temperature test comparison figure of LED lamp;
Wherein, 1 radiator, 2 heat conduction copper posts, 3 light source assemblies, 4 radiating fins.
The specific embodiment
The present invention is for solving the bottleneck that existing LED light fixture heat radiation is undesirable, cost is high, special invention this radiator and structure based on graphite material.Below in conjunction with accompanying drawing the present invention is further explained.
Like accompanying drawing 1, a kind of radiator of LED light fixture comprises radiator 1, is provided with heat conduction copper post 2 in the middle of the radiator, and radiator 1 upper end is a light source assembly 3, and light source assembly 3 is fixed in the upper end of radiator 1, and said radiator 1 is made for flexible graphite material.In flexible graphite material, also add polypropylene, the part by weight of polypropylene and soft graphite is (0.15-0.35): 1, and the part by weight of the best of polypropylene and soft graphite is (0.15-0.35): 1.Described radiator 1 surface is provided with radiating fin 4.Radiating fin becomes even number to arrange.Described radiator 1 surface is provided with nickel coating, and nickel coating thickness is 15-25nm.Scribble silver-gray heat conductive silica gel in the middle of described light source assembly 3 and the radiator 1, the thermal conductivity factor of this heat conductive silica gel is 2.5W/MK, thermal resistance be 0.015 (℃-in
2/ W).The surface roughness of the upper surface of described radiator upper surface and copper post is less than or equal to 1.0.Copper post 2 is a kind of in cylinder table, cylinder, square column platform, the square body, and the copper post takes shape in the radiator 1, and is concordant on copper post upper end and the radiator.After the radiator of the heat radiator of same structure and aluminum alloy materials assembled light source assembly the lamp pearl heat sink temperature of LED lamp is tested, with the heat sink temperature rise process of thermocouple monitoring LED lamp pearl.
Method of testing: below two kinds of radiator temperature-uniforming plates, respectively bore the aperture that a diameter is 2mm,, light lamp with thermocouple difference testing bore holes place corresponding lamp pearl heat sink temperature in the closed room of 20 ℃ of constant temperature.Testing time is 70 minutes, writes down once in preceding 10 minutes per 20 seconds, and back 60 minutes per minute records once.
Test result is as shown in Figure 2, and the top mark curve of Fig. 2 is the heat sink temperature rise curve of aluminium alloy heat radiator lamp pearl, and below mark curve is the heat sink temperature rise curve of heat radiator lamp pearl.The heat sink temperature rise that can find out the employing heat radiator from figure is obviously slower, and is former because the graphite heat conducting coefficient high, in the identical time, can more heat be passed through heat sink in air, so lamp pearl heat sink temperature is controlled on the low relatively value.So that the radiator that graphite material is made possesses is in light weight, cost is low, the characteristics of good heat dissipation effect.
Claims (8)
1. the radiator of a LED light fixture; Comprise radiator (1); Be provided with heat conduction copper post (2) in the middle of the radiator; Radiator (1) upper end is light source assembly (3), and light source assembly (3) is fixed in the upper end of radiator (1), it is characterized in that: said radiator (1) is made for flexible graphite material.
2. the radiator of LED light fixture according to claim 1 is characterized in that: in flexible graphite material, also add polypropylene, the part by weight of polypropylene and soft graphite is (0.15-0.35): 1.
3. the radiator of LED light fixture according to claim 2 is characterized in that: described radiator (1) surface is provided with radiating fin (4).
4. the radiator of LED light fixture according to claim 3 is characterized in that: radiating fin becomes even number to arrange.
5. the radiator of LED light fixture according to claim 3 is characterized in that: described radiator (1) surface is provided with nickel coating, and nickel coating thickness is 15-25nm.
6. the radiator of LED light fixture according to claim 5 is characterized in that: scribbles silver-gray heat conductive silica gel in the middle of described light source assembly (3) and the radiator (1), the thermal conductivity factor of this heat conductive silica gel is 2.5W/MK, thermal resistance be 0.015 (℃-in
2/ W).
7. the radiator of LED light fixture according to claim 5 is characterized in that: the surface roughness of the upper surface of described radiator upper surface and copper post is less than or equal to 1.0.
8. according to the radiator of any described LED light fixture among the claim 1-7; It is characterized in that: copper post (2) is a kind of in cylinder table, cylinder, square column platform, the square body; The copper post takes shape in the radiator (1), and copper post upper end is concordant with the radiator upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103221549A CN102367954A (en) | 2011-10-21 | 2011-10-21 | Radiator of LED (light emitting diode) lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103221549A CN102367954A (en) | 2011-10-21 | 2011-10-21 | Radiator of LED (light emitting diode) lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102367954A true CN102367954A (en) | 2012-03-07 |
Family
ID=45760541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103221549A Pending CN102367954A (en) | 2011-10-21 | 2011-10-21 | Radiator of LED (light emitting diode) lamp |
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| Country | Link |
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| CN (1) | CN102367954A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620269A (en) * | 2012-04-17 | 2012-08-01 | 林荣炽 | High-power LED (Light Emitting Diode) combined heat radiator |
| CN103968344A (en) * | 2013-01-30 | 2014-08-06 | 海洋王（东莞）照明科技有限公司 | Radiating device and testing device with radiating device |
| CN104864293A (en) * | 2015-05-28 | 2015-08-26 | 成都斯科泰科技有限公司 | Large-power LED lamp with high heat conduction performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615862Y (en) * | 2003-02-19 | 2004-05-12 | 诺亚公司 | Central geometrical changing heat radiator |
| CN101136445A (en) * | 2006-08-30 | 2008-03-05 | 牟小波 | Ultra-high power illumination LED metallic packaging structure |
| CN201232984Y (en) * | 2008-07-22 | 2009-05-06 | 梁进义 | Radiating module for LED lamp |
| CN201916764U (en) * | 2011-01-06 | 2011-08-03 | 黄柱联 | LED illuminating device |
-
2011
- 2011-10-21 CN CN2011103221549A patent/CN102367954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2615862Y (en) * | 2003-02-19 | 2004-05-12 | 诺亚公司 | Central geometrical changing heat radiator |
| CN101136445A (en) * | 2006-08-30 | 2008-03-05 | 牟小波 | Ultra-high power illumination LED metallic packaging structure |
| CN201232984Y (en) * | 2008-07-22 | 2009-05-06 | 梁进义 | Radiating module for LED lamp |
| CN201916764U (en) * | 2011-01-06 | 2011-08-03 | 黄柱联 | LED illuminating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620269A (en) * | 2012-04-17 | 2012-08-01 | 林荣炽 | High-power LED (Light Emitting Diode) combined heat radiator |
| CN103968344A (en) * | 2013-01-30 | 2014-08-06 | 海洋王（东莞）照明科技有限公司 | Radiating device and testing device with radiating device |
| CN104864293A (en) * | 2015-05-28 | 2015-08-26 | 成都斯科泰科技有限公司 | Large-power LED lamp with high heat conduction performance |
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Application publication date: 20120307 |