CN104100951A - Combined radiator - Google Patents

Combined radiator Download PDF

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Publication number
CN104100951A
CN104100951A CN201410385411.7A CN201410385411A CN104100951A CN 104100951 A CN104100951 A CN 104100951A CN 201410385411 A CN201410385411 A CN 201410385411A CN 104100951 A CN104100951 A CN 104100951A
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heat
parts
heat transfer
conducting base
conducting
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CN201410385411.7A
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CN104100951B (en
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叶伟炳
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Dongguan Wenyu Industrial Co Ltd
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Dongguan Wenyu Industrial Co Ltd
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Abstract

The invention relates to a combined radiator. The combined radiator comprises a heat conducting base, a heat dissipating main body and a plurality of heat transfer pieces. The heat conducting base comprises a plurality of heat conducting parts, a plurality of extension parts extending from the heat conducting parts and a plurality of heat conducting branches fixedly connected with the extension parts. First fixing holes are formed in the heat conducting parts. The heat dissipating main body comprises a heat dissipating part and a plurality of radiating fins arranged at one side of the heat dissipating part; second fixing holes are formed at the other side of the heat dissipating part. Each heat transfer piece comprises a heat transfer part, and a first fixed part and a second fixed part which are fixedly arranged at the end portions of the two ends of the heat transfer part, respectively; the first fixed part is embedded in the corresponding first fixing hole, while the second fixed part is embedded in the corresponding second fixing hole. The combined radiator is easy to assemble and repair due to a plurality of detachable or combinable heat transfer pieces arranged between the heat conducting base and the heat dissipating main body. In addition, the heat dissipating path of the combined radiator is optimized so that the radiator is relatively excellent in heat dissipation property and heat conducting property.

Description

Combined radiator
Technical field
The present invention relates to LED lamp radiator field, particularly relate to a kind of combined radiator.
Background technology
LED (Light Emitting Diode, light emitting diode), it can directly become visible ray by electric energy conversion efficiently, and has and reach tens thousand of hours~service life of 100,000 hours.Be widely used in the fields such as view, safety, special type and general lighting, market potential is beyond measure.
LED light fixture is with the advantage such as of fine quality, durable, energy-conservation and be called as the most frequently used lighting.But in current LED light fixture, playing main thermolysis is radiator, the heat that LED lamp produces in the time of work is delivered on radiator, and further by radiator, heat is delivered in extraneous air, and then heat is fallen apart, to ensure that LED lamp can continue normal work.
At present, existing radiator adopts aluminum alloy materials more, but current aluminium alloy is in thermal conductivity or not ideal enough, especially for high-power LED lamp.And existing LED lamp merely adopts aluminium alloy as heat sink material, is difficult to meet its radiating requirements, cause the reliability of LED light fixture work to reduce, thereby affect illumination effect, reduce the service life of LED lamp.
In addition, existing radiator is all one-body molded design, can not realizing self disassembling, assembling and distortion.Especially while carrying out entirety assembling drawn game portion maintenance operation, will and inconvenience.Therefore, some radiators also go out of use because some glitch can not get maintenance, cause great waste.
Patent CN102301021A discloses a kind of yield strength and percentage elongation excellence, and easy-sintering not, replaces compression casting aluminium alloy that ADC 10 and ADC 12 obtain and the high toughness Al-alloy foundry goods with this alloy compression casting.It is characterized in that, this aluminium alloy contains: Si:4.0~9.0 % by weight, Mg:0.5~1.0 % by weight, Fe:0.55 % by weight are following, Mn:0.30~0.6 % by weight and Cr:0.10~0.25 % by weight, and surplus comprises Al and inevitable impurity.
Patent CN101248200A discloses a kind of Birmasil that comprises at least following 5 kinds of alloying components: Si:2.5 % by weight to 3.3 % by weight, preferably 2.7 % by weight to 3.1 % by weight; Mg:0.2 % by weight to 0.7 % by weight, preferably 0.3 % by weight to 0.6 % by weight; Fe:< 0.18 % by weight, preferably 0.05 % by weight to 0.16 % by weight; Mn:< 0.5 % by weight, preferably 0.05 % by weight to 0.4 % by weight; Ti:< 0.1 % by weight, preferably 0.01 % by weight to 0.08 % by weight; Sr:< 0.03 % by weight, preferably 0.01 % by weight to 0.03 % by weight; Other: <0.1 % by weight; Under above-mentioned condition, surplus is Al, and making summation is 100 % by weight.
Patent CN103469034A discloses a kind of LED radiator aluminium alloy and preparation method thereof.It is characterized in that, the each element of this aluminium alloy consists of by mass percentage: Si2.2-2.8, Cu1.5-2.5, Mg1.1-1.6, Zn3.7-4.4, Mn0.6-1.2, Fe0.5-1, Ni0.4-0.8, Cr0.2-0.3, Ti0.15-0.25, Ge0.08-0.12, Th0.04-0.07, Y0.03-0.05, Sm0.02-0.03, Tb0.02-0.03, surplus are aluminium.
Aluminium alloy yield strength and percentage elongation that patent CN102301021A and CN101248200A provide are better, but thermal conductivity is poor, are difficult to meet LED lamp radiating requirements.Although the aluminium alloy thermal conductivity that patent CN103469034A provides is relatively better, merely adopt aluminium alloy also still can not meet the radiating requirements of LED lamp.
Summary of the invention
Based on this, be necessary to provide a kind of and be easy to assembling maintenance, heat conductivility better and the stronger combined radiator of heat dispersion.
A kind of combined radiator, is characterized in that, comprising: heat-conducting base, heat radiation main body and some heat transfer pieces;
Described heat-conducting base comprises several heat-conducting parts, extends laterally several extensions of setting and several heat conduction branches that end, two ends is fixedly connected with two extensions respectively by the sidewall of described heat-conducting part, each described heat-conducting part forms closing structure by described extension and described heat conduction branch, offers the first fixing hole on described heat-conducting part;
Described heat radiation main body comprises radiating part and is fixedly installed on several radiating fins of described radiating part one side, and described radiating part offers the second fixing hole away from described radiating fin one side;
Described heat transfer piece comprises heat transfer part and is fixedly installed on respectively the first fixed part and second fixed part of end, described heat transfer part two ends, and described the first fixed part is embedded in described the first fixing hole, and described the second fixed part is embedded in described the second fixing hole.
In one of them embodiment, on described radiating part, offer several louvres.
In one of them embodiment, described louvre runs through described radiating part, and two openings of described louvre are all in communication with the outside.
In one of them embodiment, the sidewall of each described heat-conducting part also extends an installation portion is set laterally.
In one of them embodiment, on described installation portion, offer installing hole.
In one of them embodiment, the junction that is positioned at described the first fixed part and described the first fixing hole on described heat transfer part is provided with the first fixing lug boss.
In one of them embodiment, the junction that is positioned at described the second fixed part and described the second fixing hole on described heat transfer part is provided with the second fixing lug boss.
In one of them embodiment, described heat-conducting base comprises each component of following mass parts: 0.1 part~0.3 part of 93 parts~97 parts of copper, 2 parts~4.5 parts, aluminium, 0.1 part~0.3 part, nickel, 0.2 part~1.2 parts of vanadium, 0.1 part~0.4 part, manganese, 0.1 part~0.3 part of titanium, 0.1 part~0.3 part of chromium and vanadium.
In one of them embodiment, described heat transfer piece comprises each component of following mass parts: 0.05 part~0.3 part of 45 parts~52 parts of copper, 47 parts~54 parts, aluminium, 0.3 part~0.7 part, magnesium, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
In one of them embodiment, described heat radiation main body comprises each component of following mass parts: 0.05 part~0.3 part of 88 parts~93 parts, aluminium, 5.5 parts~10.5 parts of silicon, 0.3 part~0.7 part, magnesium, 0.05 part~0.3 part of copper, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
Combinations thereof formula radiator, by several several heat transfer pieces detachable or assembling are set between heat-conducting base and heat radiation main body, is easy to assembling and maintenance.In addition, by the heat-conducting base, heat transfer piece and the heat radiation main body that connect are successively set, and the heat-conductive characteristic of heat-conducting base, heat transfer piece and heat radiation main body successively decreases successively, form heat-conductive characteristic gradient, thereby further optimized the heat dissipation path of combined radiator, heat dispersion is strong and heat conductivility is better.
Brief description of the drawings
Fig. 1 is the structural representation of the combined radiator of an embodiment of the present invention;
Fig. 2 is the structural representation of the heat-conducting base shown in Fig. 1;
Fig. 3 is the structural representation of the heat-conducting base of another embodiment of the present invention;
Fig. 4 is the plan structure schematic diagram of the heat radiation main body shown in Fig. 1;
Fig. 5 is the structural representation of the heat transfer piece shown in Fig. 1;
Fig. 6 is the plan structure schematic diagram of the heat transfer piece shown in Fig. 5;
Fig. 7 is the plan structure schematic diagram at another visual angle of the heat transfer piece shown in Fig. 5.
Detailed description of the invention
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.A lot of details are set forth in the following description so that fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar improvement without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public specific embodiment.
Refer to Fig. 1, the combined radiator 10 of an embodiment comprises heat-conducting base 100, heat radiation main body 200 and several heat transfer pieces 300.The end, two ends of heat transfer piece 300 is arranged at respectively in heat-conducting base 100 and heat radiation main body 200, so that heat-conducting base 100, heat radiation main body 200 and several heat transfer pieces 300 threes fix.Be appreciated that first the heat that LED lamp produces passes to heat-conducting base 100, pass to heat transfer piece 300 by heat-conducting base 100 more afterwards, finally pass to heat radiation main body 200 by heat transfer piece 300 again, and then fallen apart by heat radiation main body 200 again.And in the transmission dispersion process of LED lamp heat, heat-conducting base 100, heat transfer piece 300 and heat radiation main body 200 are all to extraneous air dissipated heat.
Refer to Fig. 2, heat-conducting base 100 comprises several heat-conducting parts 110, several extensions 120 and several heat conduction branches 130.
On heat-conducting part 110, offer the first fixing hole 111.Extension 120 is extended laterally to arrange by the sidewall of heat-conducting part 110 and forms, for example, it has the first extension and the second extension, the angle of described the first extension and described the second extension is 100 degree to 150 degree, to maintain the constitutionally stable while, strengthen cooling surface area, obtain better radiating effect.The end, two ends of heat conduction branch 130 connects respectively an extension 120, so that each heat-conducting part 110 forms closing structure by extension 120 and heat conduction branch 130.That is to say, heat-conducting part 110, extension 120 and heat conduction branch 130 are in turn connected to form a closed figures.
In order to make the terminal with compact integral structure of heat-conducting base 100 well-balanced, there is industrial design sense.For example, heat-conducting part 110 is four, heat conduction branch 130 is four, the sidewall of each heat-conducting part 110 extends laterally two extensions 120 is set, each heat-conducting part 110, each extension 120 and each heat conduction branch 130 are in turn connected to form the rectangular-shaped heat-conducting base 100 of closing structure, like this, can make the terminal with compact integral structure of heat-conducting base 100 well-balanced, there is industrial design sense.And for example, heat-conducting base 100 is integrated cast molding structure, to strengthen the mechanical performance of heat-conducting base 100.
In order further to strengthen radiating effect, for example, the breach of one connection extraneous air is set in described closing structure, described breach can form independently heat-dissipating space and dispel the heat, heat conducting and radiating synergy with heat-conducting base 100 self, in addition, also increase heat radiation specific area, thereby can further strengthen radiating effect.
For the ease of the installation of LED lamp, for example, several installation positions are set on heat conduction branch 130, like this, can be so that the installation of LED lamp, in addition, can also optimize the distribution spatially of LED lamp, to increase the range of exposures of LED lamp emission of light, and the brightness that light irradiates the each region in space is evenly unified, be conducive to obtain better illuminating effect.
For the ease of heat-conducting base 100 is installed, to be easy to assembling, for example, the sidewall of each heat-conducting part 110 also extends an installation portion 140 is set laterally, for heat-conducting base 100 being installed to the installing rack of light fixture, and for example, on described installation portion, offer installing hole 141, installation portion 140 is installed to by installing hole 141 on the installing rack of light fixture, like this, can so that install heat-conducting base 100, be easy to assembling.
For the ease of heat-conducting base 100a is installed, to be easy to assembling, for example, refer to Fig. 3, the structural representation of its heat-conducting base 100a that is another embodiment of the present invention, the both sides of heat-conducting base 100a are provided with buckle 110a, for being arranged in the installing rack of light fixture, like this, can be so that heat-conducting base 100a be installed, to be easy to assembling.
It should be noted that, the described heat-conducting base 100 of the various embodiments described above adopts engraved structure, on the one hand, can guarantee described heat-conducting part, described extension, the heat that described heat conduction branch and described installation portion produce LED lamp passes to described heat transfer piece fast in time, finally pass to described heat radiation main body by described heat transfer piece again, play conductive force, on the other hand, can also be at inner several heat dissipation channels that form of described heat-conducting base, and each described heat dissipation channel all can form independently heat-dissipating space and dispel the heat, play auxiliary heat dissipation effect, further strengthen radiating effect, share the heat radiation load that has born described heat transfer piece and described heat radiation main body.
Refer to Fig. 1, heat radiation main body 200 comprises radiating part 210 and is fixedly installed on the radiating fin 220 of radiating part 210 1 sides.
Refer to Fig. 4, radiating part 210 offers the second fixing hole 211 away from a side of radiating fin 220.Refer to Fig. 1, several radiating fins 220 are arranged at intervals on radiating part 210 successively, for playing main thermolysis.For example, radiating fin 220 is sheet, and for example, radiating fin 220 is cutting-edge structure away from the end of radiating part 210, and for example, the dual-side of radiating fin 220 is respectively at the connection at the dual-side edge of radiating part 210, and the length of radiating fin 220 equals the width of radiating part 210.Like this, can strengthen heat radiation main body 200 radiating effects.
In order further to strengthen the radiating effect of radiating part 210, for example, refer to Fig. 1, on radiating part 210, offer several louvres 212, louvre 212 can increase radiating part 210 specific area of dispelling the heat, thereby can further strengthen the radiating effect of radiating part 210.And for example, louvre 212 runs through radiating part 210, and two openings of louvre 212 are all in communication with the outside, like this, each louvre 212 can form the heat-dissipating space being independently in communication with the outside, and to form air thermal convection current heat radiation, thereby can further strengthen the radiating effect of radiating part 210.The radiator fan of two switched in opposite and for example, is set respectively at two opening parts of louvre 212.
In order to ensure the thermolysis of louvre 212, and avoid louvre 212 to exert an influence during to radiating fin 220 transferring heat to radiating part 210, for example, refer to Fig. 1, louvre 212 is less than other locational densely distributed degree of radiating part 210 in heat transfer piece 300 and the densely distributed degree at the link position place of radiating part 210, like this, both guarantee the thermolysis of louvre 212, and avoided again louvre 212 to exert an influence during to radiating fin 220 transferring heat to radiating part 210.
Refer to Fig. 5, heat transfer piece 300 comprises heat transfer part 310, the first fixed part 320 and the second fixed part 330.The first fixed part 320 and the second fixed part 330 are fixedly installed on respectively the end, two ends of heat transfer part 310.The first fixed part 320 is embedded in the first fixing hole 111, so that heat transfer piece 300 fixes with heat-conducting base 100.The second fixed part 330 is embedded in the second fixing hole 211, so that heat transfer piece 300 fixes with heat radiation main body 200.
In order further to strengthen fixed effect, to prevent that heat transfer piece 300 from separating with heat-conducting base 100 and heat radiation main body 200, for example, the madial wall close contact of the lateral wall of the first fixed part 320 and the first fixing hole 111, the madial wall close contact of the lateral wall of the second fixed part 330 and the second fixing hole 211.Like this, can further strengthen fixed effect, to prevent that heat transfer piece 300 from separating with heat-conducting base 100 and heat radiation main body 200.
In order further to strengthen fixed effect, to prevent that heat transfer piece 300 from separating with heat-conducting base 100 and heat radiation main body 200, for example, refer to Fig. 1 and Fig. 5, the junction that is positioned at the first fixed part 320 and the first fixing hole 111 on heat transfer part 310 is provided with the first fixing lug boss 311, and the junction that is positioned at the second fixed part 330 and the second fixing hole 211 on heat transfer part 310 is provided with the second fixing lug boss 312.
In order further to strengthen fixed effect, to prevent that heat transfer piece 300 from separating with heat-conducting base 100 and heat radiation main body 200, and make combined radiator 10 entirety be easy to assembling maintenance, for example, refer to Fig. 2, on the first fixing hole 111 madial walls, offer several first holddown grooves 111a, several first holddown grooves 111a radially distributes along the circumferential edge of the first fixing hole 111, the two side of the first holddown groove 111a all offers the first chamfering 111b, so that the A/F of the first holddown groove 111a is less than the bottom width of the first holddown groove 111a.Refer to Fig. 4, on the second fixing hole 211 madial walls, offer several second holddown grooves 211a, several second holddown grooves 211a radially distributes along the circumferential edge of the second fixing hole 211, the two side of the second holddown groove 211a all offers the second chamfering 211b, so that the A/F of the second holddown groove 211a is less than the bottom width of the second holddown groove 211a.Refer to Fig. 2 and Fig. 6, the first fixed part 320 is radial several the first fixed blocks 321 that arranges along circumferential edge, and the two side of the first fixed block 321 offers respectively two the first lead angle 321a that coordinate with two the first chamfering 111b of the first holddown groove 111a, the first lead angle 321a and the first chamfering 111b connect, like this, can make to prevent that the relative heat-conducting base 100 of heat transfer piece 300 from rotating, to prevent that heat transfer piece 300 from separating with heat-conducting base 100, thereby heat transfer piece 300 and heat-conducting base 100 are fixed more securely, in addition, the first lead angle 321a matches and also plays installation guide effect with the first chamfering 111b, be convenient to assembling maintenance.Refer to Fig. 4 and Fig. 7, the second fixed part 330 is radial several the second fixed parts 331 that arranges along circumferential edge, and the two side of the second fixed part 331 offers respectively two the second lead angle 331a that coordinate with two the second chamfering 211b of the second holddown groove 211a, the second lead angle 331a and the second chamfering 211b connect, like this, can make to prevent that the relative heat radiation main body 200 of heat transfer piece 300 from rotating, to prevent that heat transfer piece 300 from separating with heat radiation main body 200, thereby heat transfer piece 300 and heat radiation main body 200 are fixed more securely, in addition, the second lead angle 331a matches and also plays installation guide effect with the second chamfering 211b, be convenient to assembling maintenance.
Combinations thereof formula radiator 10, by several several heat transfer pieces 300 detachable or assembling are set between heat-conducting base 100 and heat radiation main body 200, is easy to assembling and maintenance.In addition, by the heat-conducting base 100, heat transfer piece 300 and the heat radiation main body 200 that connect are successively set, and the heat-conductive characteristic of heat-conducting base 100, heat transfer piece 300 and heat radiation main body 200 successively decreases successively, form heat-conductive characteristic gradient, thereby further optimized the heat dissipation path of combined radiator 10, heat dispersion is strong and heat conductivility is better.
For example, the thickness of heat-conducting base 100 is 1mm~2mm, and the length of heat transfer piece 300 is 5mm~10mm, and the height of heat radiation main body 200 is 20mm~30mm, like this, can make radiating effect better.
For example, in described combined radiator, heat-conducting base, identical or the different setting of material of heat transfer piece and heat radiation main body, for example, by the heat-conducting base connecting is successively set, heat transfer piece and heat radiation main body, and, heat-conducting base, the heat-conductive characteristic of heat transfer piece and heat radiation main body successively decreases successively, form heat-conductive characteristic gradient, thereby further optimize the heat dissipation path of described combined radiator, greatly improve the heat dispersion of described combined radiator, can meet the radiating requirements of the LED lamp that caloric value is large, there is the market value basis of extensive use.
For example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
0.1 part~0.3 part of 93 parts~97 parts of copper, 2 parts~4.5 parts, aluminium, 0.1 part~0.3 part, nickel, 0.2 part~1.2 parts of vanadium, 0.1 part~0.4 part, manganese, 0.1 part~0.3 part of titanium, 0.1 part~0.3 part of chromium and vanadium.
Above-mentioned heat-conducting base contains copper (Cu) can make the heat conductivility of heat-conducting base remain on a higher level.In the time that the mass parts of copper is 93 parts~97 parts, more than the coefficient of heat conduction of heat-conducting base can reach 380W/mK, the heat that can rapidly LED lamp be produced siphons away, and then be evenly dispersed in the structure of heat-conducting base entirety, to prevent that heat from accumulating on the contact position between LED lamp and heat-conducting base, causes the generation of hot-spot phenomenon.And the density of heat-conducting base but only has 8.0kg/m 3~8.1kg/m 3, be far smaller than the density of fine copper, can effectively alleviate like this weight of heat-conducting base, be more conducive to install and manufacture, also greatly reduce cost simultaneously.Wherein, the coefficient of heat conduction is defined as: per unit length, every K, can transmit the energy of how many W, unit is W/mK, and wherein " W " refers to thermal power unit, and " m " represents long measure rice, and " K " is absolute temperature unit, the larger explanation heat conductivility of this numerical value is better.
In addition, heat-conducting base contain mass parts be 2 parts~4.5 parts aluminium, 0.1 part~0.3 part nickel, 0.2 part~1.2 parts vanadium, 0.1 part~0.4 part manganese, 0.1 part~0.3 part titanium, 0.1 part~0.3 part chromium and the vanadium of 0.1 part~0.3 part of vanadium.With respect to fine copper, the ductility of heat-conducting base, toughness, intensity and resistance to elevated temperatures all improve greatly, and easy-sintering not; Like this, in the time that LED lamp is installed on heat-conducting base, just can prevent that the high temperature that LED lamp produces from causing damage to heat-conducting base, and, there is good ductility, toughness and intensity and also can prevent that heat-conducting base is subject to excessive stresses and causes distortion in the time of mounted LED lamp.For example, it is the nickel (Ni) of 0.1 part~0.3 part that heat-conducting base contains mass parts, can improve the resistance to elevated temperatures of heat-conducting base.And for example, it is that the vanadium (V) of 0.2 part~1.2 parts can suppress heat-conducting base grain growth that heat-conducting base contains mass parts, obtains evenly tiny grain structure, to reduce the fragility of heat-conducting base, improve the mechanical property of heat-conducting base entirety, to improve toughness and intensity.And for example, it is the titanium (Ti) of 0.1 part~0.3 part that heat-conducting base contains mass parts, can make the crystal grain miniaturization of heat-conducting base, to improve the ductility of heat-conducting base.
For example, heat-conducting base also comprises that mass parts is the silicon (Si) of 1 part~2.5 parts, in the time that heat-conducting base contains appropriate silicon, can not affect under the prerequisite of heat-conducting base heat conductivility, effectively promotes hardness and the abrasion resistance of heat-conducting base.But, find through theory analysis repeatedly and experiment evidence, when the quality of silicon in heat-conducting base too many, for example, when mass percent exceedes more than 15 parts, can make the appearance distribution black particles of heat-conducting base, and ductility reduction, be unfavorable for the production moulding of heat-conducting base.
For example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
1 part~2.5 parts of 93 parts~97 parts of copper, 2 parts~4.5 parts, aluminium, 0.1 part~0.3 part, nickel, 0.2 part~1.2 parts of vanadium, 0.1 part~0.4 part, manganese, 0.1 part~0.3 part of titanium, 0.1 part~0.3 part of chromium, 0.1 part~0.3 part of vanadium and silicon.
For example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
0.1 part~0.2 part of 95 parts~96.5 parts of copper, 2 parts~3.2 parts, aluminium, 0.2 part~0.25 part, magnesium, 0.4 part~0.9 part of iron, 0.2 part~0.3 part, manganese, 0.2 part~0.3 part of titanium, 0.1 part~0.2 part of chromium and vanadium.
For example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
1 part~2.5 parts of 95 parts~96.5 parts of copper, 2 parts~3.2 parts, aluminium, 0.2 part~0.25 part, magnesium, 0.4 part~0.9 part of iron, 0.2 part~0.3 part, manganese, 0.2 part~0.3 part of titanium, 0.1 part~0.2 part of chromium, 0.1 part~0.2 part of vanadium and silicon.
For example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
0.1 part of 93 parts of copper, 2 parts, aluminium, 0.1 part, nickel, 0.2 part of vanadium, 0.1 part, manganese, 0.1 part of titanium, 0.1 part of chromium and vanadium.
And for example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
0.2 part of 95 parts of copper, 3.5 parts, aluminium, 0.2 part, nickel, 0.8 part of vanadium, 0.3 part, manganese, 0.2 part, 0.2 part of titanium and vanadium.
And for example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
0.3 part of 97 parts of copper, 4.5 parts, aluminium, 0.3 part, nickel, 1.2 parts of vanadium, 0.4 part, manganese, 0.3 part of titanium, 0.3 part of chromium and vanadium.
And for example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
1 part of 93 parts of copper, 2 parts, aluminium, 0.1 part, nickel, 0.2 part of vanadium, 0.1 part, manganese, 0.1 part of titanium, 0.1 part of chromium, 0.1 part of vanadium and silicon.
And for example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
2 parts of 95 parts of copper, 3.5 parts, aluminium, 0.2 part, nickel, 0.8 part of vanadium, 0.3 part, manganese, 0.2 part of titanium, 0.2 part of chromium, 0.2 part of vanadium and silicon.
And for example, the heat-conducting base of an embodiment, it comprises each component of following mass parts:
2.5 parts of 97 parts of copper, 4.5 parts, aluminium, 0.3 part, nickel, 1.2 parts of vanadium, 0.4 part, manganese, 0.3 part of titanium, 0.3 part of chromium, 0.3 part of vanadium and silicon.
For example, the heat transfer piece of an embodiment, it comprises each component of following mass parts:
0.05 part~0.3 part of 45 parts~52 parts of copper, 47 parts~54 parts, aluminium, 0.3 part~0.7 part, magnesium, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
It is the copper of 45 parts~52 parts and the aluminium of 47 parts~54 parts that above-mentioned heat transfer piece contains mass parts, can make the coefficient of heat conduction of heat transfer piece remain on 300W/mK~350W/mK, to ensure that the heat that heat transfer piece can produce the LED lamp being absorbed by heat-conducting base passes to heat radiation main body rapidly, and then prevent that heat from piling up on heat transfer piece, cause hot-spot phenomenon to produce.With respect to prior art, merely adopt price is more expensive and quality is larger copper or copper alloy, above-mentioned heat transfer piece both can ensure fast the heat of heat-conducting base to be passed to heat radiation main body, had advantages of again lighter weight, was convenient to that casting is installed, price is cheaper.Meanwhile, with respect to prior art, merely adopt the poor aluminium alloy of radiating effect, above-mentioned heat transfer piece has better heat transfer property.
In addition, it is the magnesium of 0.3 part~0.7 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 the vanadium of 0.05 part~0.3 part that heat transfer piece contains mass parts, has improved yield strength, tensile strength and the resistance to elevated temperatures of heat transfer piece.For example, find through many experiments evidence and theory analysis, it is the magnesium of 0.3 part~0.7 part that heat transfer piece contains mass parts, can give to a certain extent heat transfer piece yield strength and tensile strength, because combinations thereof formula radiator is in manufacture process, need to be by one-body molded to heat-conducting base, heat transfer piece and the punching press of heat radiation main body entirety, this main body of just need to dispelling the heat has stronger yield strength, in process, be subject to excessive punching press stress with the main body that prevents from dispelling the heat and produce non-reversible deformation, and then guarantee the normal heat dispersion of combinations thereof formula radiator.In the time that the relative mass of magnesium is too low, for example, when mass parts is less than 0.3 part, can not fully guarantee that the yield strength of heat transfer piece meets the demands, but, in the time that the relative mass of magnesium is too high, for example, when mass parts is greater than 0.7 part, can make again the ductility of heat transfer piece and heat conductivility decline rapidly.For example, it is the iron of 0.2 part~0.8 part that heat transfer piece contains mass parts, can give resistance to elevated temperatures and high temperature resistant mechanical performance that heat transfer piece is higher, is beneficial to the processing casting of heat transfer piece.
For example, the heat transfer piece of an embodiment, it comprises each component of following mass parts:
0.1 part~0.3 part of 47 parts~50 parts of copper, 49 parts~52 parts, aluminium, 0.2 part~0.7 part, magnesium, 0.2 part~0.7 part of iron, 0.2 part~0.5 part, manganese, 0.1 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
For example, the heat transfer piece of an embodiment, it comprises each component of following mass parts:
0.05 part of 45 parts of copper, 47 parts, aluminium, 0.3 part, magnesium, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium and vanadium.
And for example, the heat transfer piece of an embodiment, it comprises each component of following mass parts:
0.2 part of 50 parts of copper, 48 parts, aluminium, 0.5 part, magnesium, 0.6 part of iron, 0.4 part, manganese, 0.2 part of titanium, 0.08 part of chromium and vanadium.
And for example, the heat transfer piece of an embodiment, it comprises each component of following mass parts:
0.3 part of 52 parts of copper, 54 parts, aluminium, 0.7 part, magnesium, 0.8 part of iron, 0.5 part, manganese, 0.3 part of titanium, 0.1 part of chromium and vanadium.
For example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.05 part~0.3 part of 88 parts~93 parts, aluminium, 5.5 parts~10.5 parts of silicon, 0.3 part~0.7 part, magnesium, 0.05 part~0.3 part of copper, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
It is the aluminium of 88 parts~93 parts that above-mentioned heat radiation main body contains mass parts, the coefficient of heat conduction of main body of can making to dispel the heat remains on 200W/mK~220W/mK, when heat that LED lamp produces is after the heat radiation of heat-conducting base and heat transfer piece part, when remaining heat passes to heat radiation main body by heat transfer piece again, heat radiation main body can guarantee these remaining heats evenly to be fallen apart constantly, and then prevent that heat from piling up in main body in heat radiation, cause hot-spot phenomenon.
In addition, it 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 the vanadium of 0.05 part~0.3 part that heat radiation main body contains mass parts, can greatly improve the heat dispersion of heat radiation main body.For example, it is the silicon of 5.5 parts~10.5 parts and the copper of 0.05 part~0.3 part that heat radiation main body contains mass parts, the main body of can guaranteeing to dispel the heat has advantages of good mechanical properties and lighter weight, simultaneously, can also further improve the heat-conductive characteristic of heat radiation main body, the main body of further guaranteeing to dispel the heat can will evenly fall apart via the after-heat after heat-conducting base and heat transfer piece transmission constantly, and then prevents that heat from piling up in main body in heat radiation, causes hot-spot phenomenon.
For example, heat radiation main body also comprises that mass parts is the lead (Pb) of 0.3 part~0.6 part, when the heat radiation main body lead that contains 0.3 part~0.6 part can improve the tensile strength of heat radiation main body, like this, can prevent when heat radiation main body is cast and strikes out radiating fin, while being laminated structure, pullling stress and rupture owing to being subject to excessive punching press.
For example, heat radiation main body also comprises that mass parts is the niobium (Nb) of 0.02 part~0.04 part, find through many experiments evidence and theory analysis, in the time that the mass parts of niobium is greater than 0.02 part, can greatly improve the antioxygenic property of heat radiation main body, be appreciated that heat radiation main body as in combined radiator with the parts of outside air contact area maximum, it is had relatively high expectations to high temperature oxidation resistance.But in the time that the mass parts of niobium is greater than 0.04 part, the magnetic of the main body that can cause dispelling the heat sharply increases, and can exert an influence to the miscellaneous part in LED light fixture.
For example, heat radiation main body also comprises that mass parts is the germanium (Ge) of 0.02 part~0.03 part, find through many experiments evidence and theory analysis, in the time that the mass parts of germanium is greater than 0.02 part, can play beyond thought effect to the raising of heat dispersion of heat radiation main body, but, when the quality accounting of germanium too much, for example, when the mass parts of germanium is greater than 2 parts, the brittleness of the main body that can make again to dispel the heat increases.
For example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.05 part~0.2 part of 90 parts~93 parts, aluminium, 5.5 parts~8.5 parts of silicon, 0.3 part~0.7 part, magnesium, 0.05 part~0.3 part of copper, 0.2 part~0.7 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
For example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.05 part of 88 parts, aluminium, 5.5 parts of silicon, 0.3 part, magnesium, 0.05 part of copper, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium and vanadium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.25 part of 90 parts, aluminium, 8 parts of silicon, 0.5 part, magnesium, 0.2 part of copper, 0.6 part of iron, 0.4 part, manganese, 0.1 part, 0.08 part of titanium and vanadium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.3 part of 93 parts, aluminium, 10.5 parts of silicon, 0.7 part, magnesium, 0.3 part of copper, 0.8 part of iron, 0.5 part, manganese, 0.3 part of titanium, 0.1 part of chromium and vanadium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
88 parts, aluminium, 5.5 parts of silicon, 0.3 part, magnesium, 0.05 part of copper, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium, 0.05 part of vanadium and plumbous 0.3 part.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
88 parts, aluminium, 5.5 parts of silicon, 0.3 part, magnesium, 0.05 part of copper, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium, 0.05 part of vanadium and plumbous 0.5 part.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
88 parts, aluminium, 5.5 parts of silicon, 0.3 part, magnesium, 0.05 part of copper, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium, 0.05 part of vanadium and plumbous 0.6 part.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.02 part of 90 parts, aluminium, 8 parts of silicon, 0.5 part, magnesium, 0.2 part of copper, 0.6 part of iron, 0.4 part, manganese, 0.1 part of titanium, 0.08 part of chromium, 0.25 part of vanadium and niobium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.03 part of 90 parts, aluminium, 8 parts of silicon, 0.5 part, magnesium, 0.2 part of copper, 0.6 part of iron, 0.4 part, manganese, 0.1 part of titanium, 0.08 part of chromium, 0.25 part of vanadium and niobium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.04 part of 90 parts, aluminium, 8 parts of silicon, 0.5 part, magnesium, 0.2 part of copper, 0.6 part of iron, 0.4 part, manganese, 0.1 part of titanium, 0.08 part of chromium, 0.25 part of vanadium and niobium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.02 part, 93 parts, aluminium, 10.5 parts of silicon, 0.7 part, magnesium, 0.3 part of copper, 0.8 part of iron, 0.5 part, manganese, 0.3 part of titanium, 0.1 part of chromium, 0.3 part of vanadium and germanium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.025 part, 93 parts, aluminium, 10.5 parts of silicon, 0.7 part, magnesium, 0.3 part of copper, 0.8 part of iron, 0.5 part, manganese, 0.3 part of titanium, 0.1 part of chromium, 0.3 part of vanadium and germanium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.03 part, 93 parts, aluminium, 10.5 parts of silicon, 0.7 part, magnesium, 0.3 part of copper, 0.8 part of iron, 0.5 part, manganese, 0.3 part of titanium, 0.1 part of chromium, 0.3 part of vanadium and germanium.
And for example, the heat radiation main body of an embodiment, it comprises each component of following mass parts:
0.025 part, 88 parts, aluminium, 5.5 parts of silicon, 0.3 part, magnesium, 0.05 part of copper, 0.2 part of iron, 0.2 part, manganese, 0.05 part of titanium, 0.05 part of chromium, 0.05 part of vanadium, plumbous 0.5 part, 0.03 part of niobium and germanium.
It should be noted that, existing radiator, merely adopt aluminium alloy to manufacture raw material as radiator, because existing aluminium alloy radiating effect is not ideal enough, cause radiator heat-dissipation load excessive, radiating effect is not ideal enough, especially for high-power LED lamp, is difficult to especially meet its heat radiation needs.
Combinations thereof formula radiator is by arranging the heat-conducting base, heat transfer piece and the heat radiation main body that connect successively, and, the heat-conductive characteristic of heat-conducting base, heat transfer piece and heat radiation main body successively decreases successively, form heat-conductive characteristic gradient, thereby further optimize the heat dissipation path of combined radiator, greatly improve the heat dispersion of combined radiator, can meet the radiating requirements of the LED lamp that caloric value is large.With respect to simple copper alloy, combinations thereof formula heatsink mass is lighter, and cost is lower.With respect to simple aluminium alloy, the heat dispersion of combinations thereof formula radiator is more excellent.In addition, the not same-action that the present invention also plays in combined radiator for heat-conducting base, heat transfer piece and heat radiation main body, by improved quality proportioning, resistance to elevated temperatures, toughness and the intensity of heat-conducting base are improved, improve yield strength, tensile strength and the resistance to elevated temperatures of heat transfer piece, improved heat-conductive characteristic and the antioxygenic property of heat radiation main body.
Provide some specific embodiments below, the present invention will be described in continuation again.
Embodiment 1
The vanadium of the chromium of the titanium of the manganese of the vanadium of the nickel of the aluminium of the copper of 950g, 35g, 2g, 8g, 3g, 2g, 2g and 2g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat-conducting base.
The vanadium of the chromium of the titanium of the manganese of the iron of the magnesium of the aluminium of the copper of 500g, 480g, 5g, 6g, 4g, 2g, 0.8g and 2g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat transfer piece.
The vanadium of the chromium of the titanium of the manganese of the iron of the copper of the magnesium of the silicon of the aluminium of 900g, 80g, 5g, 2g, 6g, 4g, 1g, 0.8g and 0.5g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain the main body of dispelling the heat.
Heat-conducting base, heat transfer piece and the assembling of heat radiation main body are obtained to combined radiator.
Embodiment 2
The vanadium of the chromium of the titanium of the manganese of the vanadium of the nickel of the aluminium of the copper of 930g, 20g, 1g, 2g, 1g, 1g, 1g and 1g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat-conducting base.
The vanadium of the chromium of the titanium of the manganese of the iron of the magnesium of the aluminium of the copper of 450g, 470g, 3g, 2g, 2g, 0.5g, 0.5g and 0.5g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat transfer piece.
The vanadium of the chromium of the titanium of the manganese of the iron of the copper of the magnesium of the silicon of the aluminium of 930g, 105g, 7g, 3g, 8g, 5g, 3g, 1g and 3g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain the main body of dispelling the heat.
Heat-conducting base, heat transfer piece and the assembling of heat radiation main body are obtained to combined radiator.
Embodiment 3
The vanadium of the chromium of the titanium of the manganese of the vanadium of the nickel of the aluminium of the copper of 970g, 45g, 3g, 12g, 4g, 3g, 3g and 3g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat-conducting base.
The vanadium of the chromium of the titanium of the manganese of the iron of the magnesium of the aluminium of the copper of 520g, 540g, 7g, 8g, 5g, 3g, 1g and 3g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain heat transfer piece.
The vanadium of the chromium of the titanium of the manganese of the iron of the copper of the magnesium of the silicon of the aluminium of 880g, 55g, 3g, 0.5g, 2g, 2g, 0.5g, 0.5g and 0.5g is mixed, then drop in melting furnace, after fusing, obtain solution, then carry out the refinement treatment such as dehydrogenation processing and removing impurities processing, follow solution-cast after treatment in predetermined mould, after solidifying, obtain the main body of dispelling the heat.
Heat-conducting base, heat transfer piece and the assembling of heat radiation main body are obtained to combined radiator.
Combined radiator to embodiment 1~3 preparation carries out heat-conductive characteristic test, the results are shown in Table 1.
Table 1
As can be seen from Table 1, the heat-conductive characteristic of heat-conducting base, heat transfer piece and the heat radiation main body of the combined radiator of embodiment 1~3 preparation successively decreases successively, form heat-conductive characteristic gradient, and, by having compared with bigger serface heat radiation main body dissipation of heat in external environment condition, compared to fine copper combined radiator, under the prerequisite of guaranteeing heat dispersion, weight greatly reduces; Compared to a large amount of aluminum alloy combination formula radiators that exist on market, from upper table 1, heat dispersion greatly strengthens.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore 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 (10)

1. a combined radiator, is characterized in that, comprising: heat-conducting base, heat radiation main body and some heat transfer pieces;
Described heat-conducting base comprises several heat-conducting parts, extends laterally several extensions of setting and several heat conduction branches that end, two ends is fixedly connected with two extensions respectively by the sidewall of described heat-conducting part, each described heat-conducting part forms closing structure by described extension and described heat conduction branch, offers the first fixing hole on described heat-conducting part;
Described heat radiation main body comprises radiating part and is fixedly installed on several radiating fins of described radiating part one side, and described radiating part offers the second fixing hole away from described radiating fin one side;
Described heat transfer piece comprises heat transfer part and is fixedly installed on respectively the first fixed part and second fixed part of end, described heat transfer part two ends, and described the first fixed part is embedded in described the first fixing hole, and described the second fixed part is embedded in described the second fixing hole.
2. combined radiator according to claim 1, is characterized in that, offers several louvres on described radiating part.
3. combined radiator according to claim 2, is characterized in that, described louvre runs through described radiating part, and two openings of described louvre are all in communication with the outside.
4. combined radiator according to claim 1, is characterized in that, the sidewall of each described heat-conducting part also extends an installation portion is set laterally.
5. combined radiator according to claim 4, is characterized in that, on described installation portion, offers installing hole.
6. combined radiator according to claim 1, is characterized in that, the junction that is positioned at described the first fixed part and described the first fixing hole on described heat transfer part is provided with the first fixing lug boss.
7. combined radiator according to claim 1, is characterized in that, the junction that is positioned at described the second fixed part and described the second fixing hole on described heat transfer part is provided with the second fixing lug boss.
8. according to the arbitrary described combined radiator of claim 1 to 7, it is characterized in that, described heat-conducting base comprises each component of following mass parts: 0.1 part~0.3 part of 93 parts~97 parts of copper, 2 parts~4.5 parts, aluminium, 0.1 part~0.3 part, nickel, 0.2 part~1.2 parts of vanadium, 0.1 part~0.4 part, manganese, 0.1 part~0.3 part of titanium, 0.1 part~0.3 part of chromium and vanadium.
9. combined radiator according to claim 8, it is characterized in that, described heat transfer piece comprises each component of following mass parts: 0.05 part~0.3 part of 45 parts~52 parts of copper, 47 parts~54 parts, aluminium, 0.3 part~0.7 part, magnesium, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
10. combined radiator according to claim 9, it is characterized in that, described heat radiation main body comprises each component of following mass parts: 0.05 part~0.3 part of 88 parts~93 parts, aluminium, 5.5 parts~10.5 parts of silicon, 0.3 part~0.7 part, magnesium, 0.05 part~0.3 part of copper, 0.2 part~0.8 part of iron, 0.2 part~0.5 part, manganese, 0.05 part~0.3 part of titanium, 0.05 part~0.1 part of chromium and vanadium.
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CN104913220A (en) * 2015-06-18 2015-09-16 东莞市闻誉实业有限公司 Lighting lamp
CN106224919A (en) * 2016-08-18 2016-12-14 东莞市闻誉实业有限公司 Led lamp
CN106338011A (en) * 2016-08-31 2017-01-18 长兴友畅电子有限公司 LED with heat and electricity separation
CN111534727A (en) * 2020-05-07 2020-08-14 江苏兆铝金属制品有限公司 Special aluminum alloy material for high-strength car lamp and preparation method thereof

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CN2426179Y (en) * 2000-05-29 2001-04-04 超级台风科技有限公司 Improved CPU heat sink
CN201251749Y (en) * 2008-06-20 2009-06-03 刘雪 Novel refrigerating and heat-dissipating device of CPU semiconductor
US20110155351A1 (en) * 2009-12-30 2011-06-30 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Heat dissipation device with heat pipe
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CN104848065A (en) * 2015-05-15 2015-08-19 东莞市闻誉实业有限公司 Led lamp
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