CN104763957A - Ventilation type led street lamp - Google Patents

Abstract

A ventilation type LED street lamp comprises a base, a first heat radiation plate connected with the base, a second heat radiation plate connected with the base, a first substrate connected with the first heat radiation plate and a second substrate connected with the second heat radiation plate. A heat radiation channel is arranged in the base, the first heat radiation plate is arranged at the position, on one side of the heat radiation channel, of the base, and the second heat radiation plate is arranged at the position, on the other side of the heat radiation channel, of the base. The first substrate is arranged on the side, away from the second heat radiation plate, of the first heat radiation plate, and the second substrate is arranged on the side, away from the first heat radiation plate, of the second heat radiation plate. The side, towards the second heat radiation plate, of the first heat radiation plate and the side, towards the first heat radiation plate, of the second heat radiation plate are provided with a plurality of heat radiation burrs, and the heat radiation burrs are conical. According to the ventilation type LED street lamp, the heat radiation channel is formed in the middle of the base, air ventilation is facilitated, the ventilation performance of the positions around the heat radiation burrs can be improved, and therefore the heat radiation efficiency of the ventilation type LED street lamp is improved.

Description

Aeration type LED street lamp

Technical field

The present invention relates to a kind of lighting, particularly relate to a kind of aeration type LED street lamp.

Background technology

LED street lamp has energy-conservation, that the life-span is long feature, avoids the trouble often needing more to change the bulb, is subject to the favor of increasing user.But the heat dissipation problem of LED street lamp and safety problem are also Important Problems.

Traditional LED street lamp does not even establish radiator because considering that radiator is generally arranged in closed shell by safety issue.Cause the air permeability relative deficiency of LED street lamp like this, affect the radiating efficiency of LED street lamp, thus have influence on its service life.

Summary of the invention

Based on this, be necessary to provide the aeration type LED street lamp that a kind of radiating efficiency is high and safety is good.

This aeration type LED street lamp comprises: lamp holder and the lamp stand be connected with lamp holder.

The second substrate that lamp holder comprises base, the first heat sink be connected with base, the second heat sink be connected with base, the first substrate be connected with the first heat sink and is connected with the second heat sink.

Be provided with heat dissipation channel in base, base is provided with the first heat sink in heat dissipation channel side, and base is provided with the second heat sink at heat dissipation channel opposite side.Base is provided with first opening corresponding with the first heat sink, and base is provided with second opening corresponding with the second heat sink.Be provided with the first reflective surface between first heat sink and the first opening, between the second heat sink and the second opening, be provided with the second reflective surface.

First substrate is located at the one side of the first heat sink away from the second heat sink, and second substrate is located at the one side of the second heat sink away from the first heat sink.First heat sink is equipped with multiple heat radiation burr towards the one side of the second heat sink and the second heat sink towards the one side of the first heat sink.

In an embodiment wherein, heat radiation burr conically.

In an embodiment wherein, the first reflective surface and the second reflective surface are all in circular arc.

In an embodiment wherein, base and heat dissipation channel are all square.Base is towards the first reflective surface while be provided with the first wind guide channel, and base is being provided with the second wind guide channel towards the second reflective surface.First heat sink is provided with the 3rd wind guide channel, and the second heat sink is provided with the 4th wind guide channel.First wind guide channel and the 3rd is with air channel to be communicated with, and the second wind guide channel is communicated with the 4th wind guide channel.First heat sink is provided with the first air outlet away from first wind guide channel one end, and the first air outlet is communicated with the 3rd wind guide channel.Second heat sink is provided with the second air outlet away from second wind guide channel one end, and the second air outlet is communicated with the 4th wind guide channel.First air outlet is all communicated with heat dissipation channel with the second air outlet.

In an embodiment wherein, the first air outlet tilts to away from the first opening direction, and the second air outlet tilts to away from the second opening direction.

In an embodiment wherein, heat radiation burr is provided with multiple branch.

In an embodiment wherein, each branch all conically.

In an embodiment wherein, multiple branch circumferentially arranges, the axis of each branch all with the axis being parallel of heat radiation burr.

In an embodiment wherein, base is equipped with multiple catch at the first wind guide channel and the second wind guide channel place.

In an embodiment wherein, the first reflective surface and the second reflective surface are all in straight plate shape.

Above-mentioned aeration type LED street lamp, the heat of first substrate can be transferred to the first heat sink, the heat of second substrate can be transferred in the second heat sink, first heat sink and the second heat sink can transfer heat to heat radiation burr in and shed, multiple heat radiation burr can provide larger area of dissipation, is conducive to the radiating efficiency improving aeration type LED street lamp.The centre of base offers heat dissipation channel, is conducive to the circulation of air, can improve the air permeability around heat radiation burr, thus improve the radiating efficiency of aeration type LED street lamp.

Being communicated with of first wind guide channel and the 3rd wind guide channel is beneficial to the more air of guiding and flows through heat dissipation channel, second wind guide channel was also conducive to guiding more air to flow through heat dissipation channel with being communicated with of the 4th wind guide channel, thus accelerate heat radiation burr surrounding air circulation speed, to improve the radiating efficiency of aeration type LED street lamp.Heat radiation burr is provided with multiple branch and is conducive to provide larger area of dissipation.

Accompanying drawing explanation

Fig. 1 is the structural representation of aeration type LED street lamp of the present invention;

Fig. 2 is the top view of the aeration type LED street lamp shown in Fig. 1;

Fig. 3 is the sectional view of the aeration type LED street lamp shown in Fig. 2;

In accompanying drawing, the implication of each label is:

10-aeration type LED street lamp;

110-lamp holder;

120-lamp stand;

130-base, 131-first opening, 132-second opening, 133-first reflective surface, 134-second reflective surface, 135-first wind guide channel, 136-second wind guide channel, 137-catch, 138-heat dissipation channel;

140-first heat sink, 141-the 3rd wind guide channel, 142-first air outlet;

150-second heat sink, 151-the 4th wind guide channel, 152-second air outlet;

160-dispels the heat burr;

170-first substrate;

180-second substrate.

Detailed description of the invention

Shown in figure 1-Fig. 3, wherein Fig. 1 is the structural representation of aeration type LED street lamp 10 of the present invention; Fig. 2 is the top view of the aeration type LED street lamp 10 shown in Fig. 1; Fig. 3 is the sectional view of the aeration type LED street lamp 10 shown in Fig. 2.

This aeration type LED street lamp 10 comprises: lamp holder 110 and the lamp stand 120 be connected with lamp holder 110, and lamp holder 110 and lamp stand 120 removably connect.

Lamp holder 110 is square, the second substrate 180 that lamp holder 110 comprises base 130, the first heat sink 140 be connected with base 130, the second heat sink be connected with base 130, the first substrate 170 be connected with the first heat sink 140 and is connected with the second heat sink.

Be provided with heat dissipation channel 138 in base 130, preferably, heat dissipation channel 138 is located at the centre of base 130 and is square or ellipse.Base 130 is provided with the first heat sink 140 in heat dissipation channel 138 side, and base 130 is provided with the second heat sink at heat dissipation channel 138 opposite side, and the first heat sink 140 and the second heat sink are arranged symmetrically with.Base 130 is being provided with the first installation portion with the first heat sink 140 junction, and the first installation portion is located at by the first heat sink 140.Base 130 is being provided with the second installation portion with the second heat sink junction, and the second installation portion is located at by the second heat sink.

First heat sink 140 is provided with first substrate 170 away from the one side of the second heat sink, and the second heat sink is provided with second substrate 180 away from the one side of the first heat sink 140.Base 130 is provided with first opening 131 corresponding with first substrate 170, and base 130 is provided with second opening 132 corresponding with second substrate 180.Be provided with the first reflective surface 133 between first heat sink 140 and the first opening 131, the one the second are provided with the second reflective surface 134 between heat sink and the second opening 132.First reflective surface 133 and the second reflective surface 134 are all in circular arc.First substrate 170 and second substrate 180 are all packaged with LED lamp bead, and the light that the LED lamp bead of first substrate 170 sends penetrates from the first outlet after the first reflective surface 133.The light that the LED lamp bead of second substrate 180 sends penetrates from the second outlet after the second reflective surface 134.First outlet and the second outlet are equipped with lens.

First heat sink 140 is equipped with multiple heat radiation burr 160 towards the one side of the second heat sink and the second heat sink towards the one side of the first heat sink 140, and heat radiation burr 160 conically.Heat radiation burr 160 is provided with multiple branch, and all conically, multiple branch line centered by the axis of the burr 160 that dispels the heat circumferentially arranges in each branch, and the axis of each branch is all with the axis being parallel of heat radiation burr 160 or in the angle being less than 30 °.

Base 130 and heat dissipation channel 138 are all square.Base 130 is towards the first reflective surface 133 while be provided with the first wind guide channel 135, and base 130 is being provided with the second wind guide channel 136 towards the second reflective surface 134.First heat sink 140 is provided with the 3rd wind guide channel 141, second heat sink and is provided with the 4th wind guide channel 151.First wind guide channel 135 and the 3rd is with air channel to be communicated with, and the second wind guide channel 136 is communicated with the 4th wind guide channel 151.First heat sink 140 is provided with the first air outlet 142, first air outlet 142 away from first wind guide channel 135 one end and is communicated with the 3rd wind guide channel 141.Second heat sink is provided with the second air outlet 152, second air outlet 152 away from second wind guide channel 136 one end and is communicated with the 4th wind guide channel 151.First air outlet 142 tilts to away from the first opening 131 direction, and the second air outlet 152 tilts to away from the second opening 132 direction, enough in blowing up to be conducive to from the wind energy of the first air outlet 142 and the blowout of the second air outlet 152.First air outlet 142 is all communicated with heat dissipation channel 138 with the second air outlet 152.Base 130 is equipped with multi-disc catch 137 away from second wind guide channel 136 one end and the second wind guide channel 136 away from first wind guide channel 135 one end at the first wind guide channel 135.

Above-mentioned aeration type LED street lamp 10, the heat of first substrate 170 can be transferred in the first heat sink 140, the heat of second substrate 180 can be transferred in the second heat sink 150, first heat sink 140 and the second heat sink 150 can transfer heat to heat radiation burr 160 in and shed, multiple heat radiation burr 160 can provide larger area of dissipation, is conducive to the radiating efficiency improving aeration type LED street lamp 10.The centre of base 130 offers heat dissipation channel 138, is conducive to the circulation of air, can improve the air permeability around heat radiation burr 160, thus improve the radiating efficiency of aeration type LED street lamp 10.

Being communicated with of first wind guide channel 135 and the 3rd wind guide channel 141 is beneficial to the more air of guiding and flows through heat dissipation channel 138, second wind guide channel 136 was also conducive to guiding more air to flow through heat dissipation channel 138 with being communicated with of the 4th wind guide channel 151, thus accelerate heat radiation burr 160 surrounding air circulation speed, to improve the radiating efficiency of aeration type LED street lamp 10.Heat radiation burr 160 is provided with multiple branch and is conducive to provide larger area of dissipation.Such as, heat radiation burr arranges multiple heat radiation branch, and and for example, described heat radiation branches into sheet, and such as, described heat radiation branches into fin.

In order to the radiating effect of further heat radiation sheet, increased thermal conductivity energy, such as, described fin arranges radiating area, it superposes successively and arranges the first rete, second rete, third membrane layer, 4th rete and the 5th rete, i.e. the first rete, second rete, third membrane layer, 4th rete and the 5th rete superpose successively and are attached on described fin as radiating area, that is, first rete is attached on described fin, second rete is attached on the first rete, third membrane layer is attached on the second rete, 4th rete is attached in third membrane layer, 5th rete is attached on the 4th rete.And for example, described radiating area is arranged at a side or the two sides of described fin; And for example, described radiating area is arranged on all surfaces of described fin.And for example, described heat radiation burr projection arranges some radiating fins, the surface of radiating fin described in each all covers and arranges described radiating area; And for example, described heat radiation burr is symmetrical arranged some radiating fins.

Such as, the first rete wherein, has insulation effect good, the advantage that thermal conductivity factor is large and thermal coefficient of expansion is low, so, when the heat of fin is directly delivered to described first rete, described first rete can lead away the heat that fin near zone is assembled fast and in time.Secondly, nearest due between described first rete and fin, its heat conduction load born is maximum, when the thermal coefficient of expansion of described first rete is low, just can avoid producing gap between described first rete and described second rete, with avoid described first rete self to produce gap, and then the problem that the thermal conductivity factor that produces after can avoiding this gap and gap filling air reduces.Finally, nearest due between described first rete and fin, the problem that easy generation electric elements directly contact with described first rete, when the insulation effect of described first rete is good, just can avoid the first rete energising, thus improve the security performance of described Novel heat dissipation material, safety standard is higher.

Such as, first rete comprises each component of following mass parts: 40 parts ~ 70 parts, carborundum, alundum (Al2O3) 13 parts ~ 55 parts, silica 2 parts ~ 15 parts, binding agent 3 parts ~ 25 parts, kaolin 2 parts ~ 20 parts, 0.5 part ~ 2 parts, magnesia, 0.5 part ~ 2 parts, Dongyang soil, light weight calcium 0.5 part ~ 2 parts and rare earth oxide 0.2 part ~ 0.5% part.

Above-mentioned first rete utilizes carborundum as primary raw material, and mix the raw material that remaining may be used for preparing pottery, thus thermal conductivity factor is high, good insulation preformance, thermal coefficient of expansion are low and the good advantage of heat resistance to make above-mentioned first rete possess simultaneously, in addition, above-mentioned first rete also has the advantage being easy to the manufacturing and low cost of manufacture.

Preferably, first rete comprises each component of following mass parts: 50 parts ~ 60 parts, carborundum, alundum (Al2O3) 30 parts ~ 50 parts, silica 10 part ~ 15 parts, binding agent 10 parts ~ 20 parts, kaolin 15 parts ~ 20 parts, 1 part ~ 1.5 parts, magnesia, 1 part ~ 1.5 parts, Dongyang soil, light weight calcium 1 part ~ 1.5 parts and rare earth oxide 0.3 part ~ 0.4% part.Preferably, the first rete comprises each component of following mass parts: 55 parts, carborundum, alundum (Al2O3) 40 parts, silica 13 parts, binding agent 15 parts, kaolin 18 parts, 1.5 parts, magnesia, 1.5 parts, Dongyang soil, light weight calcium 1.5 parts and rare earth oxide 0.3 part.

Such as, the present invention also provides a kind of preparation method of described first rete of above-mentioned arbitrary embodiment, and it comprises the steps: by said ratio by carborundum, alundum (Al2O3), silica, binding agent, kaolin, magnesia, Dongyang soil, light weight calcium and rare earth oxide mixing; Above-mentioned first rete is obtained after plasticizing, extrusion forming, cooling and the demoulding.It should be noted that, because above-mentioned second rete is directly fitted with described first rete, the heat absorbed from fin can be directly passed to described second rete by so described first rete, this just requires that described second rete has high thermal conductivity factor, can the heat absorbed from described first rete be delivered to rapidly on described second rete, in addition, also require that described second rete has good heat dispersion simultaneously, and lower thermal coefficient of expansion.

Such as, a kind of second rete, it is high that it has thermal conductivity factor, the advantage of perfect heat-dissipating and good mechanical property, so, when the heat absorbed from fin is directly passed to described second rete by described first rete, the heat that so described first rete absorbs just can be delivered to rapidly on described second rete, and in the process of heat conduction, based on the heat dispersion that described second rete is excellent, can also by the heat loss on described second rete in the air in the external world.Secondly, because described second rete is also in the distance relatively near with fin, the temperature of itself also can be higher, but, based on the thermal coefficient of expansion that described second rete is lower, just can avoid producing gap between described second rete and described third membrane layer, ensure that the compactness of both laminatings.Such as, second rete of an embodiment of the present invention, it comprises 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.Above-mentioned second rete is by adopting Graphene to be primary raw material, and its thermal conductivity factor is greatly improved, and heat-conducting effect is better.In addition, then pass through to add CNT and carbon fiber, can form heat dissipation channel, heat dispersion is also better.

Preferably, the second rete comprises 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, Graphene 90 parts, CNT 10 parts and carbon nano-fiber 10 parts.

It should be noted that, because the heat of fin is through front two-layer, namely after described first rete and described second rete, understand the heat loss of some in the air in the external world.In addition, because the cost of described second rete is higher, its main cause is, the primary raw material of described second rete is the Graphene that preparation cost is higher, therefore, based on described third membrane layer heat transfer and heat radiation burden relatively little when, the heat dissipation metal material that described third membrane layer can use current market the most frequently used, to reach the effect reducing costs and obtain better heat transfer property.

Such as, a kind of third membrane layer, it is high that it has thermal conductivity factor, perfect heat-dissipating, good mechanical property and lower-cost advantage, so, when the heat of described second rete passes to described third membrane layer, the heat that so described second rete absorbs just can more promptly be delivered in described third membrane layer, and in the process of heat transfer, the heat of part also can be directly delivered in extraneous air by described third membrane layer.Such as, the third membrane layer of an embodiment of the present invention, it comprises each component of following mass parts: copper 93 parts ~ 97 parts, 2 parts ~ 4.5 parts, aluminium, 0.1 part ~ 0.3 part, nickel, vanadium 0.2 part ~ 1.2 parts, 0.1 part ~ 0.4 part, manganese, titanium 0.1 part ~ 0.3 part, chromium 0.1 part ~ 0.3 part and vanadium 0.1 part ~ 0.3 part.

Above-mentioned third membrane layer contains copper (Cu) can make the heat conductivility of third membrane layer remain on a higher level.When the mass parts of copper is 93 parts ~ 97 parts, the coefficient of heat conduction of described third membrane layer can reach more than 380W/mK, the heat that can come described second rete transmits more quickly passes, and then be evenly dispersed in the structure of described third membrane layer entirety, to prevent from the contact position of heat between described second rete and described third membrane layer accumulates, cause the generation of hot-spot phenomenon.And the density of described third membrane layer but only has 8.0kg/m3 ~ 8.1kg/m3, be far smaller than the density of fine copper, effectively can alleviate the weight of described third membrane layer like this, be more conducive to manufacture is installed, also greatly reduce cost simultaneously.In addition, described third membrane layer contain mass parts be the aluminium of 2 parts ~ 4.5 parts, the nickel of 0.1 part ~ 0.3 part, the vanadium of 0.2 part ~ 1.2 parts, the manganese of 0.1 part ~ 0.4 part, the titanium of 0.1 part ~ 0.3 part, the chromium of 0.1 part ~ 0.3 part and the vanadium of vanadium 0.1 part ~ 0.3 part.Relative to fine copper, the ductility of third membrane layer, toughness, intensity and resistance to elevated temperatures improve all greatly, and not easy-sintering.

In order to make described third membrane layer have performance better, such as, described third membrane layer contains the nickel (Ni) that mass parts is 0.1 part ~ 0.3 part, can improve the resistance to elevated temperatures of third membrane layer.And for example, it is that the vanadium (V) of 0.2 part ~ 1.2 parts can suppress third membrane layer grain growth that third membrane layer contains mass parts, obtains more tiny grain structure, to reduce the fragility of described third membrane layer, improve the mechanical property of described third membrane layer entirety, to improve toughness and intensity.And for example, described third membrane layer contains the titanium (Ti) that mass parts is 0.1 part ~ 0.3 part, can make the crystal grain miniaturization of described third membrane layer, to improve the ductility of described third membrane layer; And for example, described third membrane layer also comprises the silicon (Si) that mass parts is 1 part ~ 2.5 parts, when described third membrane layer contains appropriate silicon, under the prerequisite not affecting described third membrane layer heat conductivility, can effectively promote hardness and the abrasion resistance of described third membrane layer.But, through repeatedly theory analysis and experiment evidence find, when in third membrane layer, the quality of silicon is too many, such as, when mass percent is more than more than 15 parts, can make the appearance distribution black particles of third membrane layer, and ductility reduces, and is unfavorable for the producing shaped of described third membrane layer.

Preferably, described third membrane layer comprises each component of following mass parts: copper 94 parts ~ 96 parts, 3 parts ~ 4 parts, aluminium, 0.2 part ~ 0.3 part, nickel, vanadium 0.5 part ~ 1 part, 0.2 part ~ 0.3 part, manganese, titanium 0.2 part ~ 0.3 part, chromium 0.2 part ~ 0.3 part and vanadium 0.2 part ~ 0.3 part.Preferably, described third membrane layer comprises each component of following mass parts: copper 95 parts, 3.5 parts, aluminium, 0.3 part, nickel, vanadium 0.8 part, 0.2 part ~ 0.3 part, manganese, titanium 0.2 part ~ 0.3 part, chromium 0.2 part ~ 0.3 part and vanadium 0.2 part ~ 0.3 part.

It should be noted that, when the heat of fin is through three first layers, namely described first rete is respectively, after described second rete and described third membrane layer, have relatively large a part of heat to be dissipated in transmission in air dielectric, in addition, primary raw material due to described third membrane layer is copper, its heavier mass, therefore, when relatively little based on described 4th convection burden, described 4th rete can use radiating effect better, lighter in weight, lower-cost material, reduce costs and weight to reach, and obtain the effect of better heat dispersion.

Such as, a kind of 4th rete, it is better that it has radiating effect, lighter in weight and lower-cost advantage, so, when the heat of described third membrane layer transmits described 4th rete, so described 4th rete can by the heat loss of the overwhelming majority in air dielectric, to coordinate described first rete, described second rete and described third membrane layer complete the effect of gradient heat transfer, like this, can for different heat regions, namely with fin pitch from distance measure, realize the gradient transmission of heat and lost effect, solve traditional heat sinks insulated with material poor, cost is high, quality weight, the problem of heat conduction and radiating effect difference.

Such as, the 4th rete comprises each component of following mass parts: copper 47 parts ~ 50 parts, 49 parts ~ 52 parts, aluminium, 0.2 part ~ 0.7 part, magnesium, iron 0.2 part ~ 0.7 part, 0.2 part ~ 0.5 part, manganese, titanium 0.1 part ~ 0.3 part, chromium 0.05 part ~ 0.1 part and vanadium 0.1 part ~ 0.3 part.

It is the copper of 47 parts ~ 50 parts and the aluminium of 49 parts ~ 52 parts that above-mentioned 4th rete contains mass parts, the coefficient of heat conduction of described 4th rete can be made to remain on 300W/mK ~ 350W/mK, to ensure that the heat passed over by described third membrane layer can be dissipated in air dielectric by described 4th rete rapidly, and then prevent heat from piling up on described 4th rete, cause hot-spot phenomenon to produce.Relative to prior art, merely adopt price costly and the larger copper of quality, above-mentioned 4th rete both had good heat dissipation effect, can rapidly by heat loss in air, there is again lighter weight, be convenient to install casting, advantage that price is cheaper.Meanwhile, relative to prior art, merely adopt the aluminium alloy that radiating effect is poor, above-mentioned 4th rete has better heat transfer property.In addition, it is the magnesium of 0.2 part ~ 0.7 part, the iron of 0.2 part ~ 0.7 part, the manganese of 0.2 part ~ 0.5 part, the titanium of 0.1 part ~ 0.3 part, the chromium of 0.05 part ~ 0.1 part and the vanadium of 0.1 part ~ 0.3 that 4th rete contains mass parts, improves the yield strength of the 4th rete, tensile strength and resistance to elevated temperatures.Such as, find through many experiments evidence and theory analysis, the 4th rete contains the magnesium that mass parts is 0.2 part ~ 0.7 part, can give the 4th rete yield strength and tensile strength to a certain extent.

Preferably, described 4th rete comprises each component of following mass parts: copper 48 parts ~ 49 parts, 50 parts ~ 52 parts, aluminium, 0.2 part ~ 0.5 part, magnesium, iron 0.2 part ~ 0.5 part, 0.3 part ~ 0.5 part, manganese, titanium 0.2 part ~ 0.3 part, chromium 0.05 part ~ 0.08 part and vanadium 0.2 part ~ 0.3 part.Preferably, described 4th rete comprises each component of following mass parts: copper 48 parts, 51 parts, aluminium, 0.3 part, magnesium, iron 0.3 part, 0.4 part, manganese, titanium 0.4 part, chromium 0.08 part and vanadium 0.3 part.

In order to alleviate the weight of described 4th rete further, and obtain good radiating effect, such as, the present invention also provides auxiliary 4th rete, and described auxiliary 4th rete is arranged at described 4th rete away from described third membrane layer one side.

Such as, auxiliary 4th rete comprises each component of following mass parts: 88 parts ~ 93 parts, aluminium, silicon 5.5 parts ~ 10.5 parts, 0.3 part ~ 0.7 part, magnesium, copper 0.05 part ~ 0.3 part, iron 0.2 part ~ 0.8 part, 0.2 part ~ 0.5 part, manganese, titanium 0.05 part ~ 0.3 part, chromium 0.05 part ~ 0.1 part and vanadium 0.05 part ~ 0.3 part.Above-mentioned auxiliary 4th rete contains the aluminium that mass parts is 88 parts ~ 93 parts, the coefficient of heat conduction of auxiliary 4th rete can be made to remain on 200W/mK ~ 220W/mK, radiating effect is better, the needs be delivered to by after-heat in air dielectric can be met, simultaneously, its quality is lighter, is more conducive to transport.In addition, auxiliary 4th rete contains the vanadium that mass parts is the silicon of 5.5 parts ~ 10.5 parts, the magnesium of 0.3 part ~ 0.7 part, the copper of 0.05 part ~ 0.3 part, the iron of 0.2 part ~ 0.8 part, the manganese of 0.2 part ~ 0.5 part, the titanium of 0.05 part ~ 0.3 part, the chromium of 0.05 part ~ 0.1 part and 0.05 part ~ 0.3 part, greatly can improve the heat dispersion of auxiliary 4th rete.Such as, it is the silicon of 5.5 parts ~ 10.5 parts and the copper of 0.05 part ~ 0.3 part that auxiliary 4th rete contains mass parts, can guarantee that auxiliary 4th rete has the advantage of good mechanical properties and lighter weight, meanwhile, the heat dispersion of auxiliary 4th rete can also be improved further.And for example, auxiliary 4th rete also comprises the lead (Pb) that mass parts is 0.3 part ~ 0.6 part, when the lead of assisting the 4th rete to contain 0.3 part ~ 0.6 part can improve the tensile strength of auxiliary 4th rete, like this, can prevent when auxiliary 4th rete is cast strike out sheet or membranaceous structure time, be subject to excessive punching press and pull stress and rupture.And for example, auxiliary 4th rete also comprises the niobium (Nb) that mass parts is 0.02 part ~ 0.04 part.

It should be noted that, because the heat of fin is through first four layers, namely after described first rete, described second rete, described third membrane layer and described 4th rete, greatly the heat of a part has been lost in extraneous air.Therefore; heat radiation burden based on described 5th rete is relatively little; and self-temperature lower when; when the impact of the larger generation of thermal coefficient of expansion is minimum; the plastic material that described third membrane layer can use current market the most frequently used; reduce costs and weight to reach, and obtain better surface protection performance.

Such as, a kind of 5th rete, it is good that it has surface protection performance; the lower advantage of lighter in weight, cost, so, when described 5th rete is positioned at the outermost layer of described Novel heat dissipation material; good heat dispersion can be had, good surface protection performance, lighter weight and lower cost.Such as, 5th rete comprises each component of following mass parts: described 5th rete comprises each component of following mass parts: 20 parts ~ 40 parts, graphite, 20 parts ~ 30 parts, 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, antioxidant.When above-mentioned water-soluble silicate mixes with graphite and carbon fiber, under the high temperature conditions can with the generation copolyreaction of polyamide, form heat dissipation channel, thus improve heat dispersion, and the structure of more fluffy sky, quality is lighter.In addition, owing to the addition of carbon fiber, its surface protection performance and mechanical performance are better, such as, more anti-oxidant, and more acid and alkali-resistance is more corrosion-resistant.

Preferably, described 5th rete comprises each component of following mass parts: 30 parts ~ 35 parts, graphite, 25 parts ~ 30 parts, carbon fiber, polyamide 45 parts ~ 50 parts, water-soluble silicate 15 parts ~ 20 parts, hexagonal boron nitride 4 parts ~ 6 parts, BMI 3 parts ~ 4 parts, silane coupler 1 part ~ 1.5 parts, 0.5 part ~ 1 part, antioxidant.Preferably, described 5th rete comprises each component of following mass parts: 35 parts, graphite, 28 parts, carbon fiber, polyamide 45 parts, water-soluble silicate 18 parts, hexagonal boron nitride 5 parts, BMI 3.5 parts, silane coupler 1.8 parts, 0.7 part, antioxidant.

In order to make described first rete better, described second rete, described third membrane layer, heat conduction and the sinking path of described 4th rete and described 5th rete are optimized more, therefore, considering cost, weight, heat conduction and radiating effect, and when surface protection performance, described second rete of an embodiment of the present invention, described third membrane layer, described 4th rete and described 5th thicknesses of layers ratio are 1 ~ 1.5:8 ~ 12:5 ~ 7:6 ~ 10:2 ~ 2.5, so, described first rete can be made, described second rete, described third membrane layer, heat conduction and the sinking path of described 4th rete and described 5th rete are optimized more.

In order to make each Rotating fields of described Novel heat dissipation material, i.e. described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete are fixed together better, to improve Stability Analysis of Structures performance, such as, described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete be provided with inserted tooth and caulking groove between adjacent interfaces between two, when adjacent two layers structure is fitted, inserted tooth is embedded in caulking groove, each Rotating fields of described Novel heat dissipation material can be made like this, i.e. described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete are fixed together better, to improve Stability Analysis of Structures performance.And for example, described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete be provided with buckle and draw-in groove between adjacent interfaces between two, when adjacent two layers structure is fitted, buckle is embedded in draw-in groove, each Rotating fields of described Novel heat dissipation material can be made like this, namely described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete are fixed together, better to improve Stability Analysis of Structures performance further.

Be fixed together to make described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete further, to improve structural stability further, and reduce the impact on described Novel heat dissipation material heat conduction and heat transfer property.

Such as, first filling adhesive layer is set between the first rete and the second rete, second filling adhesive layer is set between the second rete and third membrane layer, is provided with the 3rd between third membrane layer and the 4th rete and fills adhesive layer, arrange the 4th between the 4th rete and the 5th rete and fill adhesive layer.Be appreciated that, first rete, the second rete, the second rete, third membrane layer, the 4th rete and the 5th rete there is the small and a fairly large number of gap of structure between two between adjacent interfaces, its reason is mainly, due to the binding face defective tightness of above-mentioned layers of material, and the first filling adhesive layer, second fills adhesive layer by arranging, the 3rd filling adhesive layer and the 4th is filled adhesive layer and can be filled these gaps preferably, also play the effect of bonding simultaneously.

Such as, described first fills adhesive layer, and it comprises 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 parts and MQ silicones 1 part ~ 20 parts.Preferably, described first filling adhesive layer comprises 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 parts and MQ silicones 15 parts ~ 20 parts.Preferably, described first filling adhesive layer comprises each component of following mass parts: nano alumina particles 900 parts, methyl vinyl silicone rubber 25 parts, vinyl silicone oil 45 parts, dimethicone 85 parts and MQ silicones 20 parts.

Such as, described second fills adhesive layer, and it comprises 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 parts and MQ silicones 1 part ~ 20 parts;

Preferably, described second filling adhesive layer comprises 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 parts and MQ silicones 10 parts ~ 15 parts.

Preferably, described second filling adhesive layer comprises each component of following mass parts: nano alumina particles 600 parts, methyl vinyl silicone rubber 15 parts, vinyl silicone oil 35 parts, dimethicone 65 parts and MQ silicones 15 parts.

Such as, described 3rd fills adhesive layer, and it comprises 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 parts and MQ silicones 1 part ~ 20 parts.

Preferably, described 3rd filling adhesive layer comprises 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 parts and MQ silicones 5 parts ~ 10 parts.

Preferably, described 3rd filling adhesive layer comprises each component of following mass parts: nano alumina particles 500 parts, methyl vinyl silicone rubber 25 parts, vinyl silicone oil 25 parts, dimethicone 30 parts and MQ silicones 8 parts.

Such as, described 4th fills adhesive layer, and it comprises 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 parts and MQ silicones 1 part ~ 20 parts.

Preferably, described 4th filling adhesive layer comprises 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 parts and MQ silicones 1 part ~ 10 parts.

Preferably, described 4th filling adhesive layer comprises each component of following mass parts: nano alumina particles 250 parts, methyl vinyl silicone rubber 18 parts, vinyl silicone oil 20 parts, dimethicone 95 parts and MQ silicones 5 parts.

Above-mentioned first fills adhesive layer, the second filling adhesive layer, the 3rd fills adhesive layer and the 4th filling adhesive layer is all matrix material with organic siliconresin, and adds the nano alumina particles with better heat-conducting effect.By adding conduction powder nano aluminium oxide in organic siliconresin matrix, thus it is stronger to prepare bonding force, thermal conductivity factor height fills jointing material, and then described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete can be made better to be fixed together, to improve structural stability further.

It is emphasized that, first fills adhesive layer, the second filling adhesive layer, the 3rd fills adhesive layer and the 4th content of filling nano alumina particles in adhesive layer successively decreases successively, because heat load is also successively decrease successively from the first rete, the second rete, third membrane layer, the 4th rete to described 5th rete, like this, the effect of gradient heat conduction and heat radiation can be got better.

Described first rete, described second rete, described third membrane layer, described 4th rete and described 5th rete is held in order to sticky better, avoid increasing excessive thickness simultaneously, and the impact reduced heat conduction and heat dispersion, such as, described first fills adhesive layer, described second filling adhesive layer, the described 3rd fills adhesive layer and the 4th Thickness Ratio of filling adhesive layer is 1 ~ 1.5:2 ~ 2.5:3 ~ 3.5:4 ~ 4.5, and for example, the described first Thickness Ratio of filling adhesive layer and described first rete is 1:50 ~ 80.

Above-mentioned Novel heat dissipation material arranges the first rete, the second rete, third membrane layer, the 4th rete and the 5th rete by superposition successively, can obtain good insulating, the coefficient of expansion is low, thermal conductivity factor is large, the advantage of good heat dissipation effect and light weight.

The above embodiment only have expressed preferred embodiment of the present invention, and it describes comparatively 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 the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (8)

1. an aeration type LED street lamp, the lamp stand (120) comprising lamp holder (110) and be connected with described lamp holder (110), is characterized in that:

The second substrate (180) that described lamp holder (110) comprises base (130), the first heat sink (140) be connected with described base (130), the second heat sink (150) be connected with described base (130), the first substrate (170) be connected with described first heat sink (140) and is connected with described second heat sink (150);

Heat dissipation channel (138) is provided with in described base (130), described base (130) is provided with described first heat sink (140) in described heat dissipation channel (138) side, described base (130) is provided with described second heat sink (150) at described heat dissipation channel (138) opposite side, described base (130) is provided with first opening (131) corresponding with described first heat sink (140), described base (130) is provided with second opening (132) corresponding with described second heat sink (150), the first reflective surface (133) is provided with between described first heat sink (140) and described first opening (131), the second reflective surface (134) is provided with between described second heat sink (150) and described second opening (132),

Described first substrate (170) is located at the one side of described first heat sink (140) away from described second heat sink (150), described second substrate (180) is located at the one side of described second heat sink (150) away from described first heat sink (140), and described first heat sink (140) is equipped with multiple heat radiation burr (160) towards the one side of described second heat sink (150) and described second heat sink (150) towards the one side of described first heat sink (140).

2. aeration type LED street lamp according to claim 1, is characterized in that: described first reflective surface (133) and described second reflective surface (134) are all in circular arc.

3. aeration type LED street lamp according to claim 1, is characterized in that: described base (130) and described heat dissipation channel (138) are all square.

4. aeration type LED street lamp according to claim 1, is characterized in that: described heat radiation burr (160) is provided with multiple branch.

5. aeration type LED street lamp according to claim 4, is characterized in that: each described branch all conically.

6. aeration type LED street lamp according to claim 4, is characterized in that: multiple described branch circumferentially arranges, the axis of each described branch all with the axis being parallel of described heat radiation burr (160).

7. aeration type LED street lamp according to claim 1, is characterized in that: described base (130) is equipped with multi-disc catch (137) described first wind guide channel (135) and the second wind guide channel (136) place.

8. aeration type LED street lamp according to claim 1, is characterized in that: described first reflective surface (133) and described second reflective surface (134) are all in circular arc.