CN104696761B - LED radiating lamp - Google Patents
LED radiating lamp Download PDFInfo
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- CN104696761B CN104696761B CN201510142301.2A CN201510142301A CN104696761B CN 104696761 B CN104696761 B CN 104696761B CN 201510142301 A CN201510142301 A CN 201510142301A CN 104696761 B CN104696761 B CN 104696761B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2101/00—Point-like light sources
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- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
A kind of LED radiating lamp, including: thermal column, lamp holder, substrate, multiple heat radiation arc sheet and LED.Lamp holder is arranged at the first end of thermal column.Substrate is arranged at the second end of thermal column.Thermal column offers multiple radiating groove, radiating groove and the first end and the second end connects, and offers multiple louvre in each radiating groove.Multiple heat radiation arc sheets are arranged radially the edge in substrate, and the two sides of heat radiation arc sheet are respectively provided with concave curvatures and convex surface, and heat radiation arc sheet is gradually bent near the axle center of thermal column by one end being positioned on substrate to the other end.LED is arranged at convex surface.Above-mentioned LED radiating lamp is by arranging thermal column, substrate and multiple heat radiation arc sheet, and multiple heat radiation arc sheet surrounds a heat dissipation cavity with substrate, can be greatly enhanced radiating effect.Light direction can be made more uniform additionally, LED is arranged on heat radiation arc sheet.
Description
Technical field
The present invention relates to technical field of heat dissipation, particularly relate to a kind of LED radiating lamp.
Background technology
The fast development of LED industry, has significantly pulled the development of upstream materials industry, has also further promoted height
The breakthrough of end Material Field.Wherein, LED lamp can be used substantial amounts of heat sink material, including LED wafer
Potted element, LED light lens, light-scattering component, high efficiency and heat radiation element, luminous reflectance and light diffusing board
Deng.
All the time, bad meeting of dispelling the heat causes the problems such as power supply damage, light decay quickening, reduced lifetime, all the time
It it is the most important thing of LED illumination System performance boost.
Such as, Chinese patent 201110178768.4 discloses a kind of LED radiator and LED lamp, tool
The open present invention of body is applicable to lighting radiator production technical field, it is provided that a kind of LED radiator and
LED lamp.This LED radiator includes a basic body of aluminum, and the basic body of described aluminum has the centre of a hollow bulb
Portion, its surface distributed has multiple radiating ribs；Copper piece also it is embedded with in the basic body of described aluminum.This LED lamp
Including include lamp housing, the LED light source being located in described lamp housing, be provided with LED light source aluminium base and
Fix the radiator being connected with described aluminium base, described radiator is LED radiator described above.This
The LED radiator of bright offer and LED lamp, it is higher that employing is embedded thermal conductivity in traditional aluminum base radiator
Copper piece so that radiator radiating effect in the case of not increasing fin area and volume is carried significantly
Rise, thus the life-span of the LED in ensure that light fixture.
And for example, Chinese patent 201310061315.2 discloses a kind of high heat radiation LED lamp, and concrete disclosure is originally
Disclosure of the invention the invention discloses LED lamp.This LED lamp include trocar sheath, LED light source plate and
Heat radiation heat pipe, trocar sheath is connected with heat radiation heat pipe, and heat radiation heat pipe is connected with the bottom surface of described LED light source plate,
The bottom surface of LED light source plate, towards upwards, makes the bottom surface of the heat absorbing side laminating LED light source plate of heat radiation heat pipe, to
The circuit heat of outer conduction LED light source plate.The LED lamp of the present invention uses the mode of adopting heat pipes for heat transfer heat radiation,
Radiating efficiency is high, effectively reduces the lasting rising of temperature in LED lamp, extends making of LED lamp
Use the life-span.
And for example, Chinese patent 201310215665.X discloses a kind of heat sink and LED lamp, specifically discloses
The present invention relates to the technical field of LED lamp heat radiation, disclose a kind of heat sink and LED lamp.Described
Heat sink is metallic heat radiating plate, and described metallic heat radiating plate has multiple protuberance and spaced heat radiation aperture plate.
The present invention has the beneficial effect that: swelled by employing and LED lamp is shone by spaced multiple heat radiation aperture plate
The heat conduction produced time bright distributes, and increases the area of dissipation of heat sink, reduces the temperature rise of LED,
Thus improve the service life of LED lamp.
But, disclosed in above-mentioned patent still there is the defect that radiating effect is the best in LED lamp, causes LED
Light fixture there will be the problems such as power supply damage, light decay quickening, reduced lifetime.
Summary of the invention
Based on this, it is necessary to provide a kind of radiating effect preferable LED radiating lamp.
A kind of LED radiating lamp, including: thermal column, lamp holder, substrate, multiple heat radiation arc sheet and LED,
Described lamp holder is arranged at the first end of described thermal column；
Described substrate is arranged at the second end of described thermal column；
Described thermal column offers multiple radiating groove, described radiating groove and described first end and described second
End connects, and offers multiple louvre in each described radiating groove；
Multiple described heat radiation arc sheets are arranged radially in the edge of described substrate, the both sides of described heat radiation arc sheet
Face is respectively provided with concave curvatures and convex surface, described heat radiation arc sheet by the one end being positioned on described substrate to another
One end is gradually near the bending of the axle center of described thermal column；
Described LED is arranged at described convex surface.
Wherein in an embodiment, described louvre is circular.
Wherein in an embodiment, described louvre is square.
Wherein in an embodiment, the adjacent distance between two described louvres is equal.
Wherein in an embodiment, described heat radiation arc sheet include being sequentially overlapped the insulating barrier of setting, heat-conducting layer,
Heat transfer layer, heat dissipating layer and protective layer.
Wherein in an embodiment, described insulating barrier includes each component of following mass parts: carborundum 40 parts
～70 parts, aluminium sesquioxide 13 parts～55 parts and silicon dioxide 2 parts～15 parts.
Wherein in an embodiment, described insulating barrier also includes each component of following mass parts: binding agent 3
Part～25 parts, Kaolin 2 parts～20 parts, magnesium oxide 0.5 part～2 parts, Dongyang soil 0.5 part～2 parts, light weight calcium
0.5 part～2 parts and rare earth oxide 0.2 part～0.5 part.
Wherein in an embodiment, described heat transfer layer includes each component of following mass parts: copper 93 parts～97
Part, 2 parts～4.5 parts of aluminum and 0.1 part～0.3 part of nickel.
Wherein in an embodiment, described heat transfer layer also includes each component of following mass parts: vanadium 0.2 part～1.2
Part, 0.1 part～0.4 part of manganese, titanium 0.1 part～0.3 part, chromium 0.1 part～0.3 part and niobium 0.1 part～0.3 part.
Wherein in an embodiment, described protective layer includes each component of following mass parts: 20 parts of graphite～40
Part, 20 parts～30 parts of carbon fiber and polyamide 40 parts～60 parts, water-soluble silicate 10 parts～20 parts.
Above-mentioned LED radiating lamp is by arranging thermal column, substrate and multiple heat radiation arc sheet, and multiple heat radiation arc
Sheet and substrate surround a heat dissipation cavity, can be greatly enhanced radiating effect.Additionally, LED is arranged on heat radiation
Light direction can be made on arc sheet more uniform.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED radiating lamp of an embodiment of the present invention；
Fig. 2 is the structural representation of another angle of the LED radiating lamp shown in Fig. 1；
Fig. 3 is the structural representation of the LED radiating lamp of another embodiment of the present invention；
Fig. 4 is the structural representation of the LED radiating lamp of another embodiment of the present invention；
Fig. 5 is the structural representation of the LED radiating lamp of another embodiment of the present invention；
Fig. 6 is the structural representation of the LED radiating lamp of another embodiment of the present invention；
Fig. 7 is the structural representation of the heat radiation arc sheet of the LED radiating lamp of an embodiment of the present invention；
Fig. 8 is the structural representation of the heat radiation arc sheet of the LED radiating lamp of another embodiment of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, the most right
The detailed description of the invention of the present invention is described in detail.Elaborate in the following description a lot of detail with
It is easy to fully understand the present invention.But the present invention can come real to be a lot different from alternate manner described here
Executing, those skilled in the art can do similar improvement in the case of intension of the present invention, therefore this
Bright do not limited by following public specific embodiment.
Such as, a kind of LED radiating lamp, including: thermal column, lamp holder, substrate, multiple heat radiation arc sheet and
LED, described lamp holder is arranged at the first end of described thermal column；Described substrate is arranged at described thermal column
Second end；Described thermal column offers multiple radiating groove, described radiating groove and described first end and described
Second end connects, and offers multiple louvre in each described radiating groove；Multiple described heat radiation arc sheets are in putting
Penetrating shape and be arranged at the edge of described substrate, the two sides of described heat radiation arc sheet are respectively provided with concave curvatures and convex
Curved surface, described heat radiation arc sheet by one end being positioned on described substrate to the other end gradually near described thermal column
Axle center bending, and gentle transition；Described LED is arranged at described convex surface.
Referring to Fig. 1, it is the structural representation of LED radiating lamp 10 of an embodiment of the present invention.
LED radiating lamp 10 includes: thermal column 100, lamp holder 200, substrate 300, multiple heat radiation arc sheet
400 and LED 500.Lamp holder 200 and substrate 300 may be contained within thermal column 100, multiple heat radiation arc sheets
400 are arranged at substrate 300, and LED 500 is arranged at heat radiation arc sheet 400.
Referring to Fig. 1, thermal column 100 is cylindrical-shaped structure, and thermal column 100 has small in ends, middle thick
Structure.Thermal column 100 also has the first end 110 and the second end 120, and the first end 110 and the second end
The end face of 120 is set to plane, to improve planarization, so, can preferably install lamp holder 200 and substrate
300。
Referring to Fig. 1, lamp holder 200 is arranged at the first end 110 of thermal column 100.Such as, lamp holder 200 can
To be mounted on ceiling or wall in lamp socket, thus give the normal work of LED radiating lamp 10
Electric energy is provided.
Referring to Fig. 1, substrate 300 is arranged at the second end 120 of thermal column 100.Such as, substrate 300 is
Disc-shaped structure.
Seeing also Fig. 1 and Fig. 2, multiple heat radiation arc sheets 400 are arranged radially in the edge of substrate 300,
So, multiple heat radiation arc sheets 400 just can surround a heat dissipation cavity 600 with substrate 300, and this heat dissipation cavity 600 can
So that heat radiation arc sheet 400 preferably transfers heat in the air dielectric in this heat dissipation cavity 600, it is right to improve
Spread heat degree.Such as, heat radiation arc sheet 400 is four, and certainly, heat radiation arc sheet 400 is not limited to four
Individual, according to practical situation, heat radiation arc sheet 400 can be adjusted according to the load of the quantity of LED and heat radiation
Whole.
In order to preferably optimize the mounting structure of heat radiation arc sheet 400, improve radiating effect, refer to Fig. 2, example
As, multiple heat radiation arc sheets 400 are radially uniformly arranged on the edge of substrate 300, and for example, adjacent two
It is provided with interval between individual heat radiation arc sheet 400, so, can preferably optimize the installation of heat radiation arc sheet 400
Structure, improves radiating effect.
Referring to Fig. 1, the two sides of heat radiation arc sheet 400 are respectively provided with concave curvatures 410 and convex surface 420,
Heat radiation arc sheet 400 by one end being positioned on substrate 300 to the other end gradually to the axle center of close thermal column 100
Bending, and gentle transition.
In order to preferably improve the heat dispersion of heat radiation arc sheet 400, such as, refer to Fig. 2, be located close to base
The cross-sectional area of the heat radiation arc sheet 400 of plate 300 is more than the heat radiation arc sheet 400 being located remotely from substrate 300
Cross-sectional area.It is to say, the heat transfer area of section being located close to the heat radiation arc sheet 400 of substrate 300 is big
In the heat transfer area of section of the heat radiation arc sheet 400 being located remotely from substrate 300, according to conduction of heat formula:
Wherein, definition Q is the heat output in the unit time, and definition k is heat conductivity, and definition A is heat transfer
Area of section, definition T is temperature, and definition D is heat-conducting layer thickness.
Owing to the heat output Q in the unit interval is directly proportional to heat transfer area of section A, therefore, it is located close to base
The heat transfer area of section A of the heat radiation arc sheet 400 of plate 300 is the biggest, then heat output within a certain period of time is also
The biggest, can preferably transfer heat to substrate 300, and then pass to thermal column 100, so, heat radiation
Performance is the best.So, by optimizing the structure of heat radiation arc sheet 400, make to be located close to dissipating of substrate 300
The cross-sectional area of hot arc sheet 400 is more than the cross-sectional area of the heat radiation arc sheet 400 being located remotely from substrate 300,
Can preferably improve heat dispersion.
Seeing also Fig. 1 and Fig. 2, LED 500 is arranged at the convex surface 420 of heat radiation arc sheet 400
On.Be appreciated that due to heat radiation arc sheet 400 by one end being positioned on substrate 300 to the other end gradually to leaning on
The axle center bending of nearly thermal column 100, therefore, the LED 500 being arranged on convex surface 420 sends
Light, can avoid the interference of miscellaneous part largely, and reflection based on convex surface 420 and dissipating
Penetrating effect, can make the light direction of LED 500 evenly, brightness is higher.
In order to improve the heat dispersion of described LED radiating lamp further, such as, refer to Fig. 3, LED
Radiating lamp 10 is additionally provided with heat radiation bubble 700, and heat radiation bubble 700 is hemispherical dome structure, heat radiation bubble 700 setting
In substrate 300, and the outer surface of heat radiation bubble 700 supports with concave curvatures 410；And for example, in heat radiation bubble 700
Fill coolant；And for example, the material of described coolant is light water, heavy water, liquefied ammonia or Chlorofluorocarbons (CFCs), so,
The heat assembled on heat radiation arc sheet 400 can be made to be transferred to the bubble 700 that dispels the heat rapidly by arranging heat radiation bubble 700
In, thus further increase the heat dispersion of described LED radiating lamp.
In order to improve the heat dispersion of described LED radiating lamp further, such as, refer to Fig. 4, LED
Radiating lamp 10 is additionally provided with thermal column 800, and the two ends of thermal column 800 are respectively arranged at concave curvatures 410
And substrate 300；And for example, thermal column 800 offers multiple air vent 810, can by arranging thermal column 800
So that the heat assembled on heat radiation arc sheet 400 is transferred in thermal column 800 rapidly, and air vent 810 is also
The degree of convection heat transfer' heat-transfer by convection can be improved, so, the thermal diffusivity of described LED radiating lamp can be improved further
Energy.
In order to improve the heat dispersion of described LED radiating lamp further, such as, refer to Fig. 5, heat radiation
Post 100 offers multiple radiating groove 130, and radiating groove 130 is connected with the first end 110 and the second end 120；
And for example, in each radiating groove 130, offer multiple louvre 131, when the heat of LED 500 transmits
During to thermal column 100, radiating groove 130 and louvre 131 can improve cooling surface area, such that it is able to
Improve the heat dispersion of described LED radiating lamp further.And for example, described louvre is circular；And for example,
Described louvre is square；And for example, the adjacent distance between two described louvres is equal.
In order to make described LED radiating lamp can be installed on the relatively low positions such as desk, cupboard and workbench,
And do not affect the described normal light direction of LED radiating lamp, and such as, refer to Fig. 6, dispel the heat arc sheet 400
Gradually bent to the axle center away from thermal column 100 by one end being positioned on substrate 300 to the other end, and gently
Transition, LED 500 is arranged at concave curvatures 410, and so, concave curvatures 410 can be by LED 500
The light beam sent reflexes to the lower section of heat radiation arc sheet 400, such that it is able to make described LED radiating lamp to pacify
It is loaded on the relatively low positions such as desk, cupboard and workbench, and it is normal not affect described LED radiating lamp
Light direction.
Above-mentioned LED radiating lamp 10 by arranging thermal column 100, substrate 300 and multiple heat radiation arc sheet 400,
And multiple heat radiation arc sheet 400 surrounds a heat dissipation cavity 600 with substrate 300, radiating effect can be greatly enhanced.
Light direction can be made more uniform additionally, LED 500 is arranged on heat radiation arc sheet 400.
In order to make further the heat radiation arc sheet of described LED radiating lamp have good insulating, the coefficient of expansion low,
Heat conductivity is big, good heat dissipation effect and the advantage of light weight.
Another example is to refer to Fig. 7, and it is the described LED radiating lamp of an embodiment of the present invention
The structural representation of heat radiation arc sheet 10a.Such as, heat radiation arc sheet 10a includes: be sequentially overlapped the insulation of setting
Layer 100a, heat-conducting layer 200a, heat transfer layer 300a, heat dissipating layer 400a and protective layer 500a, i.e. insulating barrier 100a,
Heat-conducting layer 200a, heat transfer layer 300a, heat dissipating layer 400a and protective layer 500a are sequentially overlapped attaching, namely
Saying, heat-conducting layer 200a is attached on insulating barrier 100a, and heat transfer layer 300a is attached on heat-conducting layer 200a, dissipates
Thermosphere 400a is attached on heat transfer layer 300a, and protective layer 500a is attached on heat dissipating layer 400a.
It should be noted that described insulating barrier directly contacts with pyrotoxin, such as, described insulating barrier is with described
LED contacts, and the most described LED is directly installed on described insulating barrier, to guarantee that described LED is sent out
The heat that light produces can be transferred directly to described insulating barrier.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet exhausted
Edge layer, has insulation effect good, and the advantage that heat conductivity is big and thermal coefficient of expansion is low, so, as described LED
When the heat of lamp is directly delivered to described insulating barrier, described insulating barrier can quickly and in time be led away described
The heat that LED near zone is assembled, to guarantee the normal work of described LED.Secondly as it is described
Closest between insulating barrier and described LED, the heat conduction load that it undertakes is maximum, when described insulating barrier
Thermal coefficient of expansion low time, it is possible to avoid producing between described insulating barrier and described heat-conducting layer gap, and keep away
Exempt from described insulating barrier self and produce gap, and then leading of producing after this gap and gap filling air can be avoided
The problem that hot coefficient reduces.Finally, due to described LED is mounted directly on the insulating layer, it is susceptible to electricity
The problem that device element directly contacts with described insulating barrier, when the insulation effect of described insulating barrier is good, it is possible to
Avoiding insulating barrier to be energized, thus improve the security performance of described heat radiation arc sheet, safety standard is higher.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet exhausted
Edge layer, it includes each component of following mass parts: carborundum 40 parts～70 parts, aluminium sesquioxide 13 parts～55
Part, silicon dioxide 2 parts～15 parts, binding agent 3 parts～25 parts, Kaolin 2 parts～20 parts, magnesium oxide 0.5
Part～2 parts, 0.5 part～2 parts of Dongyang soil, light weight calcium 0.5 part～2 parts and rare earth oxide 0.2 part～0.5 part.
Above-mentioned insulating barrier utilizes carborundum as primary raw material, and mixes remaining and may be used for preparation pottery
Raw material, so that above-mentioned insulating barrier has been provided simultaneously with heat conductivity height, good insulation preformance, thermal coefficient of expansion
Low and the preferable advantage of heat resistance, additionally, above-mentioned insulating barrier also has is readily produced manufacture and manufacturing cost
Low advantage.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Insulating barrier includes each component of following mass parts: carborundum 50 parts～60 parts, aluminium sesquioxide 30 parts～50 parts,
Silica 10 part～15 parts, binding agent 10 parts～20 parts, Kaolin 15 parts～20 parts, magnesium oxide 1 part～1.5
Part, 1 part～1.5 parts of Dongyang soil, light weight calcium 1 part～1.5 parts and rare earth oxide 0.3 part～0.4 part.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Insulating barrier includes each component of following mass parts: carborundum 55 parts, aluminium sesquioxide 40 parts, silicon dioxide
13 parts, binding agent 15 parts, Kaolin 18 parts, magnesium oxide 1.5 parts, 1.5 parts of Dongyang soil, light weight calcium 1.5
Part and rare earth oxide 0.3 part.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet exhausted
The preparation method of edge layer, it comprises the steps: carborundum, aluminium sesquioxide, dioxy by said ratio
SiClx, binding agent, Kaolin, magnesium oxide, Dongyang soil, light weight calcium and rare earth oxide mixing；Through plastifying,
Above-mentioned insulating barrier is obtained after extrusion forming, cooling and the demoulding.
It should be noted that because above-mentioned heat-conducting layer is directly fitted with described insulating barrier, then described insulating barrier meeting
The heat absorbed from described LED is directly passed to described heat-conducting layer, and this just requires that described heat-conducting layer has
There is high heat conductivity, the heat absorbed from described insulating barrier can be delivered to rapidly described heat-conducting layer
On, additionally, also require that described heat-conducting layer has preferable heat dispersion, and relatively low thermal expansion system simultaneously
Number.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, leading of described heat radiation arc sheet
Thermosphere, it is high that it has heat conductivity, perfect heat-dissipating and the advantage of good mechanical property, so, when described absolutely
The heat absorbed from described LED is directly passed to described heat-conducting layer by edge layer, then described insulating barrier is inhaled
The heat received just can be delivered to rapidly on described heat-conducting layer, and during heat conduction, leads based on described
The heat dispersion that thermosphere is excellent, it is also possible to the heat on described heat-conducting layer is lost in the air in the external world.Its
Secondary, owing to described heat-conducting layer also can also in the distance with described LED relative close, the temperature of itself
Higher, but, based on the thermal coefficient of expansion that described heat-conducting layer is relatively low, it is possible to avoid described heat-conducting layer and institute
State generation gap between heat transfer layer, it is ensured that the compactness of both laminatings.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, leading of described heat radiation arc sheet
Thermosphere, it includes each component of following mass parts: Graphene 80 parts～95 parts, CNT 0.1 part～20
Part and carbon nano-fiber 0.1 part～20 parts.
Above-mentioned heat-conducting layer is primary raw material by using Graphene so that its heat conductivity has obtained greatly carrying
Height, heat-conducting effect is preferable.Additionally, again by adding CNT and carbon fiber, heat dissipation channel can be formed,
Heat dispersion is the most preferable.
It is emphasized that at this owing to above-mentioned heat-conducting layer have employed the Graphene preferable material of this conductive effect
Material, therefore, described conductive layer is fitted by the present invention with described insulating barrier, to isolate described LED radiating lamp
Internal component, thus avoid described heat-conducting layer the most charged, and then improve described heat radiation arc sheet
Security performance, safety standard is higher.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Heat-conducting layer includes each component of following mass parts: Graphene 85 parts～90 parts, CNT 5 parts～15 parts and
Carbon nano-fiber 5 parts～15 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Heat-conducting layer includes each component of following mass parts: Graphene 90 parts, CNT 10 parts and carbon nano-fiber
10 parts.
It should be noted that because of described LED luminescence produce heat through front two-layer, i.e. through described absolutely
After edge layer and described heat-conducting layer, the heat some is lost in the air in the external world.Additionally, due to institute
Stating the relatively costly of heat-conducting layer, it main reason is that, the primary raw material of described heat-conducting layer be preparation cost relatively
High Graphene, therefore, heat transfer based on described heat transfer layer and heat radiation burden relatively small in the case of, institute
State heat transfer layer and can use the most frequently used heat dissipation metal material in current market, to reduce cost and to obtain relatively
The effect of good heat transfer property.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the biography of described heat radiation arc sheet
Thermosphere, it is high that it has heat conductivity, perfect heat-dissipating, good mechanical property and lower-cost advantage, as
This, when the heat of described heat-conducting layer passes to described heat transfer layer, then the heat that described heat-conducting layer absorbs
Just can relatively rapidly be delivered on described heat transfer layer, and during heat transfer, described heat transfer layer can also
The heat of part is directly delivered in the air in the external world.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the biography of described heat radiation arc sheet
Thermosphere, it includes each component of following mass parts: copper 93 parts～97 parts, 2 parts～4.5 parts of aluminum, 0.1 part of nickel
～0.3 part, vanadium 0.2 part～1.2 parts, 0.1 part～0.4 part of manganese, titanium 0.1 part～0.3 part, chromium 0.1 part～0.3 part
With niobium 0.1 part～0.3 part.
Above-mentioned heat transfer layer contains copper (Cu) can make the heat conductivility of heat transfer layer be maintained at the high water of comparison
Accurate.When the mass parts of copper is 93 parts～97 parts, the coefficient of heat conduction of described heat transfer layer can reach 380W/mK
Above, can pass by the heat being transmitted on described heat-conducting layer more quickly, and then be evenly dispersed in
In the structure that described heat transfer layer is overall, to prevent heat contacting between described heat-conducting layer with described heat transfer layer
Accumulate on position, cause the generation of hot-spot phenomenon.And, the density of described heat transfer layer but only has
8.0kg/m3～8.1kg/m3, it is far smaller than the density of fine copper, so can effectively alleviate the weight of described heat transfer layer
Amount, is more conducive to install manufacture, also greatly reduces cost simultaneously.Additionally, described heat transfer layer contains quality
Part be 2 parts～the aluminum of 4.5 parts, 0.1 part～the nickel of 0.3 part, 0.2 part～the vanadium of 1.2 parts, 0.1 part～the manganese of 0.4 part,
0.1 part～the titanium of 0.3 part, 0.1 part～the chromium of 0.3 part and niobium 0.1 part～the vanadium of 0.3 part.Relative to fine copper,
The ductility of heat transfer layer, toughness, intensity and resistance to elevated temperatures are improved the most significantly, and not easy-sintering.
In order to make described heat transfer layer have preferably performance, such as, it is 0.1 part that described heat transfer layer contains mass parts
～the nickel (Ni) of 0.3 part, the resistance to elevated temperatures of heat transfer layer can be improved.And for example, heat transfer layer contains mass parts and is
The vanadium (V) of 0.2 part～1.2 parts can suppress heat transfer layer crystal grain to grow up, it is thus achieved that more uniform tiny grain structure,
To reduce the fragility of described heat transfer layer, improve the mechanical property that described heat transfer layer is overall, to improve toughness with strong
Degree.And for example, described heat transfer layer contains the titanium (Ti) that mass parts is 0.1 part～0.3 part, so that described biography
The crystal grain miniaturization of thermosphere, to improve the ductility of described heat transfer layer；And for example, described heat transfer layer also includes
Mass parts is the silicon (Si) of 1 part～2.5 parts, when described heat transfer layer contains appropriate silicon, can not affect
On the premise of described heat transfer layer heat conductivility, effectively promote hardness and the abrasion resistance of described heat transfer layer.But,
Find through repeatedly theory analysis and experiment evidence, when in heat transfer layer, the quality of silicon is too many, such as mass percent
During more than more than 15 parts, the appearance distribution black particles of heat transfer layer can be made, and ductility reduces, and is unfavorable for
The production molding of described heat transfer layer.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described heat transfer layer includes each component of following mass parts: copper 94 parts～96 parts, 3 parts～4 parts of aluminum, 0.2 part of nickel
～0.3 part, vanadium 0.5 part～1 part, 0.2 part～0.3 part of manganese, titanium 0.2 part～0.3 part, chromium 0.2 part～0.3 part and
Niobium 0.2 part～0.3 part.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described heat transfer layer includes each component of following mass parts: copper 95 parts, 3.5 parts of aluminum, 0.3 part of nickel, vanadium 0.8 part,
0.2 part～0.3 part of manganese, titanium 0.2 part～0.3 part, chromium 0.2 part～0.3 part and niobium 0.2 part～0.3 part.
It should be noted that when the heat of described LED generation is through three first layers, the most described insulation
Layer, after described heat-conducting layer and described heat transfer layer, has relatively large a part of heat and is dissipated in sky in transmission
In gas medium, additionally, due to the primary raw material of described heat transfer layer is copper, its heavier mass, therefore, based on
In the case of described heat dissipating layer heat radiation burden is relatively small, described heat dissipating layer can use radiating effect preferable,
Lighter in weight, lower-cost material, to reduce cost and weight, and obtain preferable heat dispersion
Effect.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, dissipating of described heat radiation arc sheet
Thermosphere, it is preferable that it has radiating effect, and lighter in weight and lower-cost advantage, so, when described heat transfer
When the heat of layer transmits described heat dissipating layer, then the heat of the overwhelming majority can be dissipated in sky by described heat dissipating layer
In gas medium, to coordinate described insulating barrier, described heat-conducting layer and described heat transfer layer to complete the effect of gradient heat transfer,
As such, it is possible to for different heat regions, i.e. measure with the distance with described LED distance, it is achieved
The gradient transmission of heat and lost effect, solve traditional heat sinks insulated with material poor, and cost is high, matter
Amount weight, heat conduction and the problem of radiating effect difference.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, dissipating of described heat radiation arc sheet
Thermosphere, it includes each component of following mass parts: copper 47 parts～50 parts, 49 parts～52 parts of aluminum, 0.2 part of magnesium
～0.7 part, ferrum 0.2 part～0.7 part, 0.2 part～0.5 part of manganese, titanium 0.1 part～0.3 part, chromium 0.05 part～0.1 part
With vanadium 0.1 part～0.3 part.
It is 47 parts～the copper of 50 parts and 49 parts～the aluminum of 52 parts that above-mentioned heat dissipating layer contains mass parts, so that
The coefficient of heat conduction of described heat dissipating layer is maintained at 300W/mK～350W/mK, permissible to ensure described heat dissipating layer
The heat passed over by described heat transfer layer is dissipated in air dielectric rapidly, and then prevents heat in institute
State and pile up on heat dissipating layer, cause hot-spot phenomenon to produce.Relative to prior art, merely use price
Costly and the bigger copper of quality, above-mentioned heat dissipating layer had both had good heat dissipation effect, can be scattered and disappeared by heat rapidly
In air, there is again lighter weight, be easily installed the advantage that casting, price are less expensive.Meanwhile, relatively
In prior art, merely using the aluminium alloy that radiating effect is poor, above-mentioned heat dissipating layer has and more preferably conducts heat
Performance.Additionally, heat dissipating layer contain mass parts be 0.2 part～the magnesium of 0.7 part, 0.2 part～the ferrum of 0.7 part, 0.2
Part～the manganese of 0.5 part, 0.1 part～the titanium of 0.3 part, 0.05 part～the chromium of 0.1 part and 0.1 part～the vanadium of 0.3, change
The yield strength of heat dissipating layer, tensile strength and resistance to elevated temperatures are apt to it.Such as, through many experiments evidence and
Theory analysis finds, it is 0.2 part～the magnesium of 0.7 part that heat dissipating layer contains mass parts, can give to a certain extent
Heat dissipating layer yield strength and tensile strength.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described heat dissipating layer includes each component of following mass parts: copper 48 parts～49 parts, 50 parts～52 parts of aluminum, magnesium 0.2
Part～0.5 part, ferrum 0.2 part～0.5 part, 0.3 part～0.5 part of manganese, titanium 0.2 part～0.3 part, chromium 0.05 part～0.08
Part and vanadium 0.2 part～0.3 part.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described heat dissipating layer includes each component of following mass parts: copper 48 parts, 51 parts of aluminum, 0.3 part of magnesium, ferrum 0.3 part,
0.4 part of manganese, titanium 0.4 part, chromium 0.08 part and vanadium 0.3 part.
In order to alleviate the weight of described heat dissipating layer further, and obtain preferable radiating effect, such as, this
The bright auxiliary heat dissipation layer that also provides for, described auxiliary heat dissipation layer is arranged at described heat dissipating layer away from described heat transfer layer one
Side.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet auxiliary
Helping heat dissipating layer, it includes each component of following mass parts: 88 parts～93 parts of aluminum, silicon 5.5 parts～10.5 parts, magnesium
0.3 part～0.7 part, copper 0.05 part～0.3 part, ferrum 0.2 part～0.8 part, 0.2 part～0.5 part of manganese, titanium 0.05 part
～0.3 part, chromium 0.05 part～0.1 part and vanadium 0.05 part～0.3 part.
It is 88 parts～the aluminum of 93 parts that above-mentioned auxiliary heat dissipation layer contains mass parts, so that the heat of auxiliary heat dissipation layer
The coefficient of conductivity is maintained at 200W/mK～220W/mK, and radiating effect is preferable, can meet and be passed by after-heat
The needs being delivered in air dielectric, meanwhile, its quality is lighter, is more conducive to transport.Additionally, auxiliary heat dissipation layer
Containing mass parts be 5.5 parts～the silicon of 10.5 parts, 0.3 part～the magnesium of 0.7 part, 0.05 part～the copper of 0.3 part, 0.2
Part～the ferrum of 0.8 part, 0.2 part～the manganese of 0.5 part, 0.05 part～the titanium of 0.3 part, 0.05 part～the chromium of 0.1 part and
0.05 part～the vanadium of 0.3 part, can significantly improve the heat dispersion of auxiliary heat dissipation layer.Such as, auxiliary heat dissipation
Layer is 5.5 parts～the silicon of 10.5 parts and 0.05 part～the copper of 0.3 part containing mass parts, it can be ensured that auxiliary heat dissipation layer
The advantage with good mechanical properties and lighter weight, at the same time it can also be improve auxiliary heat dissipation layer further
Heat dispersion.And for example, auxiliary heat dissipation layer also includes the lead (Pb) that mass parts is 0.3 part～0.6 part, works as auxiliary
The lead that heat dissipating layer contains 0.3 part～0.6 part can improve the tensile strength of auxiliary heat dissipation layer, as such, it is possible to prevent
When auxiliary heat dissipation layer is cast strike out lamellar or membranaceous structure time, pullled stress by excessive punching press
And rupture.And for example, auxiliary heat dissipation layer also includes the niobium (Nb) that mass parts is 0.02 part～0.04 part, when niobium
When mass parts is more than 0.02 part, the antioxygenic property of auxiliary heat dissipation layer can be greatly enhanced, but, work as niobium
Mass parts more than 0.04 part time, the magnetic of auxiliary heat dissipation layer can be caused to sharply increase, can to described LED dissipate
Miscellaneous part in thermolamp tool produces impact.And for example, auxiliary heat dissipation layer also includes that mass parts is 0.02 part～0.03
The germanium (Ge) of part, when the mass parts of germanium is more than 0.02 part, can be to the raising of the heat dispersion of auxiliary heat dissipation layer
Play beyond thought effect, but, when the quality accounting of germanium is too much, such as the mass parts of germanium is more than 2 parts
Time, the brittleness of auxiliary heat dissipation layer can be made again to increase.
It should be noted that because of described LED luminescence produce heat through first four layers, i.e. through described absolutely
After edge layer, described heat-conducting layer, described heat transfer layer and described heat dissipating layer, the greatly heat of a part is lost to
In extraneous air.Therefore, heat radiation based on described protective layer burden is relatively small, and self-temperature is relatively low
In the case of, in the case of the impact of the bigger generation of thermal coefficient of expansion is minimum, described heat transfer layer can use works as
The plastic material that modern market is the most frequently used, to reduce cost and weight, and obtains preferable surface protective
Energy.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the guarantor of described heat radiation arc sheet
Sheath, it is good that it has surface protection performance, the relatively low advantage of lighter in weight, cost, so, when described protection
When layer is positioned at the outermost layer of described heat radiation arc sheet, can have preferable heat dispersion, preferable surface protection
Performance, lighter weight and relatively low cost.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the guarantor of described heat radiation arc sheet
Sheath, it includes each component of following mass parts: described protective layer includes each component of following mass parts: stone
20 parts～40 parts of ink, 20 parts～30 parts of carbon fiber, polyamide 40 parts～60 parts, water-soluble silicate 10 parts
～20 parts, hexagonal boron nitride 1 part～8 parts, BMI 2 parts～5 parts, silane coupler 0.5 part～2
Part, 0.25 part～1 part of antioxidant.
When above-mentioned water-soluble silicate mixes with graphite and carbon fiber, under the high temperature conditions can be with polyamide
It is copolymerized, forms heat dissipation channel, thus improve heat dispersion, and the structure of more fluffy sky, quality is more
Gently.Additionally, due to the addition of carbon fiber, its surface protection performance and mechanical performance are more preferable, such as, more anti-
Oxidation, more resistant to soda acid, more resistant to corrosion.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described protective layer includes each component of following mass parts: 30 parts～35 parts of graphite, 25 parts～30 parts of carbon fiber,
Polyamide 45 parts～50 parts, water-soluble silicate 15 parts～20 parts, hexagonal boron nitride 4 parts～6 parts, span comes
Acid imide 3 parts～4 parts, silane coupler 1 part～1.5 parts, 0.5 part～1 part of antioxidant.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described protective layer includes each component of following mass parts: 35 parts of graphite, 28 parts of carbon fiber, polyamide 45 parts,
Water-soluble silicate 18 parts, hexagonal boron nitride 5 parts, BMI 3.5 parts, silane coupler 1.8
Part, 0.7 part of antioxidant.
In order to preferably make described insulating barrier, described heat-conducting layer, described heat transfer layer, described heat dissipating layer and institute
State protective layer heat conduction and sinking path more optimize, therefore, considering cost, weight, heat conduction and
In the case of radiating effect, and surface protection performance, the described heat-conducting layer of an embodiment of the present invention, institute
Stating heat transfer layer, described heat dissipating layer and described protective layer thickness ratio is 1～1.5:8～12:5～7:6～10:2～2.5,
So, so that described insulating barrier, described heat-conducting layer, described heat transfer layer, described heat dissipating layer and described guarantor
Sheath heat conduction and sinking path more optimize.
In order to further such that described insulating barrier, described heat-conducting layer, described heat transfer layer, described heat dissipating layer and institute
State protective layer to be fixed together, to improve structural stability further, and reduce described LED radiating lamp
Heat radiation arc sheet heat conduction and the impact of heat transfer property.
Such as, refer to Fig. 8, the first filling adhesive layer is set between insulating barrier 100a and heat-conducting layer 200a
600a, arranges the second filling adhesive layer 700a, heat transfer layer 300a between heat-conducting layer 200a and heat transfer layer 300a
And be provided with between heat dissipating layer 400a the 3rd filling adhesive layer 800a, heat dissipating layer 400a and protective layer 500a it
Between arrange the 4th filling adhesive layer 900a.Be appreciated that insulating barrier 100a, heat-conducting layer 200a, heat-conducting layer 200a,
Heat transfer layer 300a, heat dissipating layer 400a and protective layer 500a adjacent interfaces two-by-two between to there is structure micro-
Little and a fairly large number of gap, its reason essentially consists in, due to the binding face defective tightness of above layers material,
And by arranging the first filling adhesive layer 600a, the second filling adhesive layer 700a, the 3rd filling adhesive layer 800a
Fill adhesive layer 900a with the 4th and can preferably fill these gaps, also function to the effect of bonding simultaneously.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the of described heat radiation arc sheet
One fills adhesive layer, and it includes each component of following mass parts: nano alumina particles 300 parts～1000 parts,
Methyl vinyl silicone rubber 5 parts～30 parts, vinyl silicone oil 10 parts～50 parts, dimethicone 10 parts～100
Part and MQ silicones 1 part～20 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described first fills adhesive layer includes each component of following mass parts: nano alumina particles 800 parts～1000 parts,
Methyl vinyl silicone rubber 20 parts～30 parts, vinyl silicone oil 40 parts～50 parts, dimethicone 80 parts～100
Part and MQ silicones 15 parts～20 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described first fills adhesive layer includes each component of following mass parts: nano alumina particles 900 parts, methyl
Vinylsiloxane rubber 25 parts, vinyl silicone oil 45 parts, dimethicone 85 parts and MQ silicones 20 parts.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the of described heat radiation arc sheet
Two fill adhesive layers, and it includes each component of following mass parts: nano alumina particles 200 parts～800 parts,
Methyl vinyl silicone rubber 10 parts～40 parts, vinyl silicone oil 10 parts～50 parts, dimethicone 10 parts～100
Part and MQ silicones 1 part～20 parts；
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described second fills adhesive layer includes each component of following mass parts: nano alumina particles 500 parts～700 parts,
Methyl vinyl silicone rubber 20 parts～30 parts, vinyl silicone oil 30 parts～40 parts, dimethicone 50 parts～80
Part and MQ silicones 10 parts～15 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described second fills adhesive layer includes each component of following mass parts: nano alumina particles 600 parts, methyl
Vinylsiloxane rubber 15 parts, vinyl silicone oil 35 parts, dimethicone 65 parts and MQ silicones 15 parts.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the of described heat radiation arc sheet
Three fill adhesive layers, and it includes each component of following mass parts: nano alumina particles 200 parts～700 parts,
Methyl vinyl silicone rubber 10 parts～40 parts, vinyl silicone oil 10 parts～50 parts, dimethicone 10 parts～100
Part and MQ silicones 1 part～20 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described 3rd fills adhesive layer includes each component of following mass parts: nano alumina particles 200 parts～600 parts,
Methyl vinyl silicone rubber 20 parts～40 parts, vinyl silicone oil 20 parts～50 parts, dimethicone 30 parts～100
Part and MQ silicones 5 parts～10 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described 3rd fills adhesive layer includes each component of following mass parts: nano alumina particles 500 parts, methyl
Vinylsiloxane rubber 25 parts, vinyl silicone oil 25 parts, dimethicone 30 parts and MQ silicones 8 parts.
Such as, the described LED radiating lamp of an embodiment of the present invention, wherein, the of described heat radiation arc sheet
Four fill adhesive layers, and it includes each component of following mass parts: nano alumina particles 150 parts～700 parts,
Methyl vinyl silicone rubber 15 parts～45 parts, vinyl silicone oil 10 parts～50 parts, dimethicone 10 parts～100
Part and MQ silicones 1 part～20 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described 4th fills adhesive layer includes each component of following mass parts: nano alumina particles 150 parts～450 parts,
Methyl vinyl silicone rubber 15 parts～25 parts, vinyl silicone oil 10 parts～25 parts, dimethicone 80 parts～100
Part and MQ silicones 1 part～10 parts.
Preferably, the described LED radiating lamp of an embodiment of the present invention, wherein, described heat radiation arc sheet
Described 4th fills adhesive layer includes each component of following mass parts: nano alumina particles 250 parts, methyl
Vinylsiloxane rubber 18 parts, vinyl silicone oil 20 parts, dimethicone 95 parts and MQ silicones 5 parts.
Above-mentioned first fill adhesive layer 600a, second fill adhesive layer 700a, the 3rd fill adhesive layer 800a and
4th filling adhesive layer 900a is all with organic siliconresin as matrix material, and interpolation has preferable heat-conducting effect
Nano alumina particles.By at organic silicon resin-based internal addition conduction powder nano aluminium oxide, thus can
Relatively strong to prepare bonding force, heat conductivity height fills jointing material, so can preferably make described absolutely
Edge layer, described heat-conducting layer, described heat transfer layer, described heat dissipating layer and described protective layer are fixed together, to enter
One step improves structural stability.
Require emphasis time, first fill adhesive layer 600a, second fill adhesive layer 700a, the 3rd fill viscous
Close the content of nano alumina particles in layer 800a and the 4th filling adhesive layer 900a to successively decrease successively, be because heat
Amount load is also to successively decrease successively to described protective layer from insulating barrier, heat-conducting layer, heat transfer layer, heat dissipating layer, so,
Can preferably get the effect of gradient heat conduction and heat radiation.
Described insulating barrier, described heat-conducting layer, described heat transfer layer, described heat dissipating layer and institute is held in order to preferably viscous
State protective layer, avoid increasing excessive thickness simultaneously, and reduce heat conduction and the impact of heat dispersion, such as,
Described first fills adhesive layer, described second filling adhesive layer, described 3rd filling adhesive layer and the 4th filling
The thickness ratio of adhesive layer is 1～1.5:2～2.5:3～3.5:4～4.5, and for example, described first fill adhesive layer with
The thickness of described insulating barrier is than for 1:50～80.
The heat radiation arc sheet 10a of described LED radiating lamp arranges insulating barrier 100a, heat-conducting layer by being sequentially overlapped
200a, heat transfer layer 300a, heat dissipating layer 400a and protective layer 500a, it is possible to obtain good insulating, the coefficient of expansion
Low, heat conductivity is big, good heat dissipation effect and the advantage of light weight, additionally, heat radiation arc sheet 10a is applied to institute
When stating in LED radiating lamp, it is possible to so that described LED radiating lamp acquisition good insulating, the coefficient of expansion are low,
Heat conductivity is big, good heat dissipation effect and the advantage of light weight.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (4)
1. a LED radiating lamp, it is characterised in that including: thermal column, lamp holder, substrate, multiple heat radiation arc sheet and LED,
Described lamp holder is arranged at the first end of described thermal column；
Described substrate is arranged at the second end of described thermal column；
Described thermal column offers multiple radiating groove, and described radiating groove is connected with described first end and described second end, offers multiple louvre in each described radiating groove；
Multiple described heat radiation arc sheets are arranged radially in the edge of described substrate, the two sides of described heat radiation arc sheet are respectively provided with concave curvatures and convex surface, and described heat radiation arc sheet is gradually bent near the axle center of described thermal column by one end being positioned on described substrate to the other end；
Described LED is arranged at described convex surface；
Wherein, described heat radiation arc sheet includes being sequentially overlapped the insulating barrier of setting, heat-conducting layer, heat transfer layer, heat dissipating layer and protective layer; described heat-conducting layer is attached on described insulating barrier; described heat transfer layer is attached on described heat-conducting layer; described heat dissipating layer is attached on described heat transfer layer, and described protective layer is attached on described heat dissipating layer；
Described insulating barrier includes each component of following mass parts: carborundum 40 parts～70 parts, aluminium sesquioxide 13 parts～55 parts, silicon dioxide 2 parts～15 parts, binding agent 3 parts～25 parts, Kaolin 2 parts～20 parts, magnesium oxide 0.5 part～2 parts, 0.5 part～2 parts of Dongyang soil, light weight calcium 0.5 part～2 parts and rare earth oxide 0.2 part～0.5 part；
Described heat-conducting layer includes each component of following mass parts: Graphene 80 parts～95 parts, CNT 0.1 part～20 parts and carbon nano-fiber 0.1 part～20 parts；
Described heat transfer layer includes each component of following mass parts: copper 93 parts～97 parts, 2 parts～4.5 parts of aluminum, 0.1 part～0.3 part of nickel, vanadium 0.2 part～1.2 parts, 0.1 part～0.4 part of manganese, titanium 0.1 part～0.3 part, chromium 0.1 part～0.3 part and niobium 0.1 part～0.3 part；
Described heat dissipating layer includes each component of following mass parts: copper 47 parts～50 parts, 49 parts～52 parts of aluminum, 0.2 part～0.7 part of magnesium, ferrum 0.2 part～0.7 part, 0.2 part～0.5 part of manganese, titanium 0.1 part～0.3 part, chromium 0.05 part～0.1 part and vanadium 0.1 part～0.3 part；
Also include an auxiliary heat dissipation layer, described auxiliary heat dissipation layer is arranged at described heat dissipating layer away from described heat transfer layer one side, described auxiliary heat dissipation layer, it includes each component of following mass parts: 88 parts～93 parts of aluminum, silicon 5.5 parts～10.5 parts, 0.3 part～0.7 part of magnesium, copper 0.05 part～0.3 part, ferrum 0.2 part～0.8 part, 0.2 part～0.5 part of manganese, titanium 0.05 part～0.3 part, chromium 0.05 part～0.1 part and vanadium 0.05 part～0.3 part；
Described protective layer includes each component of following mass parts: 20 parts～40 parts of graphite; 20 parts～30 parts of carbon fiber; polyamide 40 parts～60 parts; water-soluble silicate 10 parts～20 parts; hexagonal boron nitride 1 part～8 parts; BMI 2 parts～5 parts, silane coupler 0.5 part～2 parts, 0.25 part～1 part of antioxidant.
LED radiating lamp the most according to claim 1, it is characterised in that described louvre is circular.
LED radiating lamp the most according to claim 1, it is characterised in that described louvre is square.
LED radiating lamp the most according to claim 1, it is characterised in that the adjacent distance between two described louvres is equal.
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