CN104864286A - LED light - Google Patents
LED light Download PDFInfo
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- CN104864286A CN104864286A CN201510206130.5A CN201510206130A CN104864286A CN 104864286 A CN104864286 A CN 104864286A CN 201510206130 A CN201510206130 A CN 201510206130A CN 104864286 A CN104864286 A CN 104864286A
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- parts
- rete
- heat
- fin
- membrane layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
Abstract
A LED light comprises a baseplate, a control panel electrically connected with the baseplate, a lampshade connected with the baseplate and a radiator, wherein the radiator comprises a base, heat transferring tubes connected with the base and cooling fins connected with the heat transferring tubes; a binding head is arranged at one end of the base with the end away from the baseplate; a groove is formed in one side of the base with heat transferring tubes connected on the side; a rotating loop is arranged in the groove; bumping posts bulging towards cooling fins are arranged on the rotating loop; an electric motor is arranged in the base; the electric motor is connected with the rotating loop to drive the rotating loop to rotate; straight sliding grooves are formed in the outer edges of the heat transferring tubes; the cooling fins adopt elastic sheetmetal and are provided with first clamping parts; the first clamping parts are arranged in the sliding grooves and can slide along the sliding grooves. According to the LED light, when the cooling fins are at the opening state due to elasticity a plurality of cooling fins facilitate heat dissipation; the electric motor can cause the cooling fins to bend, so as to shrink the LED light to decrease the size.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of LED.
Background technology
LED 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 and safety problem are also Important Problems.Traditional LED, has good radiating effect because its radiator has large area of dissipation, contribute to the service life of improving LED, but large-area radiator is unfavorable for the transport of LED and deposits.
Summary of the invention
Based on this, be necessary to provide a kind of radiating efficiency higher, be convenient to the LED deposited.
This LED comprises: substrate, the control panel be electrically connected with substrate and the radiator be connected with substrate.
The fin that radiator comprises base, the heat-transfer pipe be connected with base and is connected with heat-transfer pipe.
Base is connected one side and is provided with groove with heat-transfer pipe, be provided with swivel becket in groove, swivel becket is provided with the bumping post to fin direction projection.Be provided with motor in base, motor is connected with swivel becket and for driving swivel becket to rotate, motor is electrically connected with control panel.
Fin is elastic sheet metal.
In an embodiment wherein, groove is circular.
In an embodiment wherein, the cross section of chute and the cross section of the first holding section all in T shape.
In an embodiment wherein, between chute and the first holding section, scribble heat-conducting silicone grease.
In an embodiment wherein, the length of chute is less than the length of heat-transfer pipe.
In an embodiment wherein, the length of fin is less than the length of heat-transfer pipe.
In an embodiment wherein, bumping post edge is provided with the second holding section in circular arc, and fin is provided with the 3rd holding section in circular arc away from one end of heat-transfer pipe.
In an embodiment wherein, the opening direction of the 3rd holding section is contrary with the opening direction of the second holding section.
In an embodiment wherein, be provided with installation portion in groove, motor is located in installation portion.Swivel becket inward flange is provided with the first gear, and motor is connected with the second gear, the second gear and the first gears meshing.
In an embodiment wherein, motor is stepper motor.
Above-mentioned LED, one end that fin is provided with the first holding section can be inserted in the chute of heat-transfer pipe, thus fin and heat-transfer pipe are removably connected.When fin is in open configuration because of elasticity, this LED is in radiating state, has wider gap, be conducive to shedding of heat between multi-disc fin at this moment.Motor can drive swivel becket to rotate, and swivel becket rotates and makes bumping post to the strong effect of fin, fin is produced bending, thus LED is shunk, to reduce volume.When the fin of this LED is in contraction state, motor can rotate toward driving in the other direction swivel becket, and swivel becket rotates and the active force of bumping post to fin is reduced gradually, makes fin recover the shape of straight plate shape gradually, thus LED is opened, to improve radiating efficiency.
Chute and the first holding section all in T shape, be conducive to the engaging of chute and holding section.Scribble heat-conducting silicone grease between chute and the first holding section, be conducive to compared with the thermal resistance between small heat dissipating plate and heat-transfer pipe.The wrap direction of the 3rd holding section on fin is contrary with the wrap direction of second holding section at bumping post edge, makes both can mutually engage after fin shrinks, fin can be made to fix away from heat-transfer pipe one end.
Accompanying drawing explanation
Fig. 1 is the structural representation of LED of the present invention;
Fig. 2 is the decomposing schematic representation of the LED shown in Fig. 1;
The schematic diagram of the fin contraction state that Fig. 3 is the LED shown in Fig. 1;
Fig. 4 is the A portion partial enlarged drawing shown in Fig. 2;
Fig. 5 is the B portion partial enlarged drawing shown in Fig. 2;
Fig. 6 is the C portion partial enlarged drawing shown in Fig. 2;
Fig. 7 is the D portion partial enlarged drawing shown in Fig. 2;
In accompanying drawing, the implication of each label is:
10-LED lamp;
110-substrate, 111-LED lamp pearl;
120-lampshade;
130-radiator, 131-base, 132-groove, 133-installation portion, 134-motor, 135-second gear, 136-heat-transfer pipe, 137-first holding section, 138-fin, 139-the 3rd holding section, 140-swivel becket, 141-bumping post, 142-second holding section, 143-first gear, 144-terminal pad, 145-bulge loop, 146-chute.
Detailed description of the invention
Shown in figure 1-Fig. 3, wherein Fig. 1 is the structural representation of LED 10 of the present invention; Fig. 2 is the decomposing schematic representation of the LED 10 shown in Fig. 1; The schematic diagram of fin 138 contraction state that Fig. 3 is the LED 10 shown in Fig. 1.
This LED 10 comprises: substrate 110, the control panel, the lampshade 120 be connected with substrate 110 and the radiator 130 be connected with substrate 110 that are electrically connected with substrate 110.Substrate 110 one side is provided with LED lamp bead 111, and the one side of substrate 110 away from LED lamp bead 111 be located at by radiator 130, and control panel is located in radiator 130.
The fin 138 that radiator 130 comprises base 131, the heat-transfer pipe 136 be connected with base 131 and is connected with heat-transfer pipe 136.Fin 138 is elastic sheet metal, and the length of fin 138 is less than the length of heat-transfer pipe 136.
Base 131 is provided with connector away from one end of substrate 110, and this connector can be used for being connected with extraneous power supply.Base 131 is connected one side and is provided with in circular groove 132 with heat-transfer pipe 136, be provided with swivel becket 140 in groove 132.Be provided with motor 134 in base 131, motor 134 is connected with swivel becket 140 and for driving swivel becket 140 to rotate.Also be provided with installation portion 133 in groove 132, motor 134 can be located in installation portion 133 and to be fixedly connected with base 131.Swivel becket 140 inward flange is provided with the first gear 143, and motor 134 is connected with the second gear 135, second gear 135 and engages with the first gear 143.The output shaft of motor 134 also can be connected by screw or belt with swivel becket 140, thus drives swivel becket 140 to rotate.
The thickness of swivel becket 140 and the deep equality of groove 132, swivel becket 140 is provided with the bumping post 141 to fin 138 direction projection, and this bumping post 141 can cylindrically also can be square column type.Simultaneously with reference to shown in figure 6 and Fig. 7, it is respectively the C portion partial enlarged drawing shown in Fig. 2 and the D portion partial enlarged drawing shown in Fig. 2.Bumping post 141 edge is provided with the second holding section 142 of bending, and fin 138 is provided with the 3rd holding section 139 of bending away from one end of heat-transfer pipe 136.The wrap direction of the 3rd holding section 139 is contrary with the wrap direction of the second holding section 142.
Motor 134 is electrically connected with control panel.Motor 134 can be decelerating step motor, and decelerating step motor had both been conducive to provide enough driving forces and has rotated to drive swivel becket 140, is conducive to again the step number or the angle that control rotation.Control panel is located in heat-transfer pipe 136, and control panel is provided with microprocessor with drive motors 134.
Simultaneously with reference to shown in figure 4 and Fig. 5, it is respectively the A portion partial enlarged drawing shown in Fig. 2 and the B portion partial enlarged drawing shown in Fig. 2.Heat-transfer pipe 136 outward flange is provided with straight chute 146, the glide direction of chute 146 and the axis being parallel of heat-transfer pipe 136.One end that fin 138 is connected with heat-transfer pipe 136 is provided with the first holding section 137, holding section 137, first and is located in chute 146 and can slides along chute 146.Chute 146 and the first holding section 137 all can be in T shape, scribble heat-conducting silicone grease between chute 146 and the first holding section 137, and the length of chute 146 can be equal with the length of heat-transfer pipe 136, and the length of chute 146 also can be less than the length of heat-transfer pipe 136.Heat-transfer pipe 136 and base 131 removably connect.Heat-transfer pipe 136 is provided with terminal pad 144 away from one end of base 131, and terminal pad 144 is provided with bulge loop 145 away from an edge of heat-transfer pipe 136, and terminal pad 144 is connected with substrate 110 away from the one side of heat-transfer pipe 136.
Above-mentioned LED 10, one end that fin 138 is provided with the first holding section 137 can be inserted in the chute 146 of heat-transfer pipe 136, thus fin 138 and heat-transfer pipe 136 are removably connected.When fin 138 is in open configuration because of elasticity, this LED 10 is in radiating state, has wider gap, be conducive to shedding of heat between multi-disc fin 138 at this moment.Motor 134 can drive swivel becket 140 to rotate, and swivel becket 140 rotates and makes bumping post 141 pairs of fin 138 have the effect of rotatory force, fin 138 is produced bending, thus LED 10 is shunk, to reduce volume.When the fin 138 of this LED 10 is in contraction state, motor 134 can rotate toward driving in the other direction swivel becket 140, swivel becket 140 rotates and the active force of bumping post 141 pairs of fin 138 is reduced gradually, fin 138 is made to recover the shape of straight plate shape gradually, thus LED 10 is opened, to improve radiating efficiency.
Chute 146 and the first holding section 137 all in T shape, be conducive to the engaging of chute 146 and holding section.Scribble heat-conducting silicone grease between chute 146 and the first holding section 137, be conducive to compared with the thermal resistance between small heat dissipating plate 138 and heat-transfer pipe 136.The wrap direction of the 3rd holding section 139 on fin 138 is contrary with the wrap direction of second holding section 142 at bumping post 141 edge, makes both can mutually engage after fin 138 shrinks, fin 138 can be made to fix away from heat-transfer pipe 136 one end.
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 fin projection arranges some radiating fins, the surface of radiating fin described in each all covers and arranges described radiating area; And for example, described fin 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.
Require emphasis time, 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 (7)
1. a LED, the control panel comprise substrate (110), being electrically connected with described substrate (110) and the radiator (130) be connected with described substrate (110), is characterized in that:
The fin (138) that described radiator (130) comprises base (131), the heat-transfer pipe (136) be connected with described base (131) and is connected with described heat-transfer pipe (136);
The one side that described base (131) is connected with described heat-transfer pipe (136) is provided with groove (132), swivel becket (140) is provided with in described groove (132), described swivel becket (140) is provided with the bumping post (141) to described fin (138) direction projection, motor (134) is provided with in described base (131), described motor (134) is connected with described swivel becket (140), for driving described swivel becket (140) to rotate, described motor (134) is electrically connected with described control panel;
Described fin (138) is elastic sheet metal.
2. LED according to claim 1, is characterized in that: described groove (132) is in circular.
3. LED according to claim 1, is characterized in that: the length of described fin (138) is less than the length of described heat-transfer pipe (136).
4. LED according to claim 1, it is characterized in that: described bumping post (141) edge is provided with second holding section (142) of bending, described fin (138) is provided with the 3rd holding section (139) of bending away from one end of described heat-transfer pipe (136).
5. LED according to claim 4, is characterized in that: the wrap direction of described 3rd holding section (139) is contrary with the wrap direction of described second holding section (142).
6. LED according to claim 1, it is characterized in that: in described groove (132), be provided with installation portion (133), described motor (134) is located in described installation portion (133), described swivel becket (140) inward flange is provided with the first gear (143), described motor (134) is connected with the second gear (135), and described second gear (135) is engaged with described first gear (143).
7. LED according to claim 1, is characterized in that: described motor (134) is stepper motor (134).
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| CN201510206130.5A CN104864286B (en) | 2015-04-27 | 2015-04-27 | LED light |
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