CN205402266U - LED lamp - Google Patents
LED lamp Download PDFInfo
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- CN205402266U CN205402266U CN201620155244.1U CN201620155244U CN205402266U CN 205402266 U CN205402266 U CN 205402266U CN 201620155244 U CN201620155244 U CN 201620155244U CN 205402266 U CN205402266 U CN 205402266U
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Abstract
The utility model relates to a LED lamp, including LED chip and heat abstractor, heat abstractor includes the radiating component, be provided with the cavity on the radiating component, get hot core, make by the material with carbon element, get hot core shape with the size with the cavity phase -match of radiating component, it fixes to get the installation of hot core in the cavity, the back of LED chip light emitting source is hugged closely or is imbedded get on the hot core. Since get hot core and make by the material with carbon element, LED lamp light in weight, to get hot core moreover and have higher coefficient of heat conductivity, it gets the heat energy reinforce, the radiating efficiency is high to LED lamp's life has been improved.
Description
Technical field
This utility model belongs to lighting field, is specially a kind of illuminating LED.
Background technology
LED (light-emittingdiode, Light-Emitting Diode) is considered as the new light sources of 21 century most worthy, it has the advantage such as low-work voltage, response time short, energy-efficient, working stability, life-span length, pollution-free, high brightness, just it is being widely used in fields such as urban look, lighting of home, automobile tail light, LED-backlit plates, LED illumination replaces traditional lighting and becomes the major way that the mankind illuminate, and will be trend of the times.
The manufacture of current great power LED is towards high-performance, integrated and miniaturization, and the power density of its chip is up to hundreds of W/cm2.The electro-optical efficiency of great power LED is about 20%, and the electric energy of about 80% is converted to heat and distributes, and therefore the heat flow density at its chip place is high.And the junction temperature rising of LED can cause that luminous efficiency decline, the lost of life, luminescent spectrum produce drift, serious also can burn chip, so heat radiation is to need one of key problems-solving in high-power LED illumination.
The existing various LED in market make cooler frequently with Natural Heat Convection, fan forced heat radiation or heat pipe method.Wherein, Natural Heat Convection and fan forced heat radiation both radiating modes have a simple in construction, and the advantage such as less costly, for the dot matrix LED that lower-powered bulb lamp and heat flow density are relatively low, air-cooled radiating mode is proper.But it is as the increase of LED chip power, above two mode is limited in one's ability due to heat-obtaining, it is difficult to heat-obtaining from the LED chip of high heat flux, and dispel the heat efficiently, seriously constrain LED to develop to high power, and adopting air blast cooling heat radiation to need to install fan, the life-span of current fan, much smaller than the life-span of LED chip, shortens the maintenance period of LED.
But, hot pipe technique is the heat transfer element that the one of George Ge Luofo (GeorgeGrover) utility model of U.S. Los Alamos (LosAlamos) National Laboratory in 1963 is called " heat pipe ", it takes full advantage of the Rapid Thermal hereditary property of heat-conduction principle and refrigeration filling, through heat pipe, the heat of thermal objects is delivered to rapidly outside thermal source, its capacity of heat transmission exceed any oneself know the capacity of heat transmission of metal.
nullPresent heat pipe is widely used in radiator manufacturing，The stem stem of such as, on market emerging high-power LED phase-change radiator just adopts gravity assisted heat pipe technology，Can referring to published Chinese patent，If number of patent application is 200810217336.8，Utility model name is called " a kind of vacuum liquid LED for LED lamp "，Number of patent application is 201010216542.4，Utility model name is called " for cooling down the gravity type flat heat pipe radiator of LED "，Number of patent application is 201010256523.4，Utility model name is called " a kind of heat-pipe radiator and make the high-power LED lamp of radiating element with it "，Number of patent application is 201010543821.1，Utility model name is called that " the high-efficient single direction heat transfer heat pipe for microelectronics heat radiation of a kind of improvement " and number of patent application are 201210006408.0，Utility model name is called patent documentation disclosures such as " the modified model gravity force heat pipe radiators for great power LED ".
Traditional gravity heat pipe is mainly made up of shell, end cap and working medium three part.In gravity assisted heat pipe, the Temperature of Working of evaporation is higher, density is relatively low, has the trend to the motion of gravity opposite direction.And the vapour volume in condensation process diminishes, density uprises, and has the trend to gravity direction motion.Therefore, gas rises to condensation segment and is condensed into liquid, and the heat-conducting medium of liquid is back to evaporator section by action of gravity, completes thermal cycle, and heat is dispersed in external environment condition by fin.Adopting the type of cooling of phase transformation, its heat-obtaining heat flow density disclosure satisfy that the requirement of LED chip, and can being distributed to even heat in whole radiator, reduce the thermal resistance of whole radiator.But what this mode adopted is working medium be sealed in a closed cavity, therefore process for machining and manufacturing is more complicated, once occur the leakage of working medium can cause the inefficacy of whole heat exchanger, and this radiator has fixing setting angle in the process installed and use, radiator work process can not occur swing, otherwise can have a strong impact on heat-obtaining and radiating effect, therefore limit the use scope of this phase-change heat-exchanger.
Utility model content
The technical problems to be solved in the utility model is: providing a kind of LED, it takes radiating efficiency height, and when using, not by the restriction of setting angle, can arbitrarily swing.
In order to solve above-mentioned technical problem, this utility model provides a kind of LED, and including LED chip and heat abstractor, described heat abstractor includes radiating component, and described radiating component is provided with cavity；Heat-obtaining core, is made up of material with carbon element, and the cavity of described heat-obtaining core shape and size and described radiating component matches, and described heat-obtaining core is fixed in described cavity；The back side of described LED chip luminous source is close to or is embedded on described heat-obtaining core.So, due to heat-obtaining core, it is made up of material with carbon element, therefore there is higher heat conductivity, its heat conductivity general can at 400-600W/ (m K), higher than the radiating component adopting aluminum or aluminum alloy or copper to become, the heat of LED chip can be taken out efficiently and dispel the heat along heat-obtaining mandrel to passing to radiating component.Further, described heat-obtaining core can adopt the material with carbon element of the Graphene composition containing a certain amount of high thermal conductivity to make.And LED chip may be mounted in the different azimuth such as heat-obtaining core top, bottom, the left side or the right, the heat of LED chip can be taken out and along heat-obtaining core transfers by heat-obtaining core efficiently, dispel the heat rapidly again through radiating component, therefore, LED is when installing and using, not by the restriction of setting angle, solve the requirement problem of phase-change heat sink directional.Meanwhile, being fixed in the cavity of radiating component by heat-obtaining core, the cavity wall of heat-obtaining core and radiating component can be fixed either directly through interference fit, reduces thermal contact resistance, improves heat transference efficiency.And, the back side of described LED chip luminous source it is close to or is embedded on described heat-obtaining core, the heat of LED chip can be taken out by heat-obtaining core efficiently and pass to radiating component.Further, since the density of material with carbon element is at 2 × 103/m3Left and right, less than the density of aluminium section bar, more below the density of copper, thus reducing the weight of whole LED, especially reducing compared to the plume formula heatsink weight that centre is copper core and becoming apparent from.Therefore, the heat abstractor heat-obtaining ability of described LED is strong, radiating efficiency is high, and when using, and not by the restriction of setting angle, thus extending the service life of LED, what have also been enlarged described LED can range of application.
Another technical scheme of the present utility model is in that, on above-mentioned basis, described LED includes one or more LED chip.As such, it is possible to install the LED chip of varying number as required, meeting different lighting demands, meanwhile, described LED chip may be mounted in the different azimuth such as heat-obtaining core top, bottom, the left side or the right, meets the lighting demand of different azimuth.
Another technical scheme of the present utility model is in that on above-mentioned basis, the cavity wall interference fit of described heat-obtaining core and described radiating component.As such, it is possible to the thermal contact resistance reduced between heat-obtaining core and radiating component, improve the heat transference efficiency between heat-obtaining core and radiating component, heat-obtaining core and radiating component can directly assemble simultaneously, by other connectors or fixing device, need not so also allow for installing, saved cost.
Another technical scheme of the present utility model is in that on above-mentioned basis, and the cross section of described cavity is other various different shapes such as semicircle circular or oval or polygon.So, described heat-obtaining core can also be arranged to other various different shapes such as semi-cylindrical, cylinder, elliptical cylinder-shape or prism, corresponding with the shape of described cavity, to be suitable for different heat abstractor shape and structure demands.
Another technical scheme of the present utility model is in that on above-mentioned basis, and the heat conductivity of described material with carbon element is at least 400W/ (m K).So, adopt the material with carbon element having high thermal conductivity as the heat-obtaining core of LED lamp heat sink, its capacity of heat transmission will be high than the heat exchanger core that aluminum or copper are made, and overcomes the bottleneck problem that cause heat cannot shed owing to the axial thermal resistance of aluminium section bar or copper section bar is excessive from LED chip.Further, described heat-obtaining core can adopt the material with carbon element containing a certain amount of graphite content to make, to improve heat-obtaining and the radiating effect of heat-obtaining core.
Another technical scheme of the present utility model is in that on above-mentioned basis, and described LED chip is pasted and fixed on described heat-obtaining core, is provided with heat-conducting silicone grease or heat conductive silica gel between described LED chip and described heat-obtaining core.So, described LED chip is pasted and fixed on described heat-obtaining core, it is provided with heat-conducting silicone grease or heat conductive silica gel between described LED chip and described heat-obtaining core, reduce the thermal contact resistance between LED chip and described heat-obtaining core, improve the heat transference efficiency between LED chip and described heat-obtaining core, the heat of LED chip can be taken out by heat-obtaining core efficiently and pass to radiating component.
Another technical scheme of the present utility model is in that on above-mentioned basis, and the substrate of described LED chip is fixed on by connector on radiating component and/or heat-obtaining core, and the back side of described substrate is close to or is embedded on described heat-obtaining core.So, the substrate of LED chip is fixed on by connector on radiating component and/or heat-obtaining core, so in advance installation fixing hole can be set on radiating component and/or heat-obtaining core, being connected by screw or bolt etc. is directly fixed on radiating component and/or heat-obtaining core by the substrate of LED chip, firmly install, facilitate, less costly.And the back side of described substrate is close to or is embedded on described heat-obtaining core, reduce the thermal contact resistance between LED chip and described heat-obtaining core, improve the heat transference efficiency between LED chip and described heat-obtaining core, so the heat of LED chip can be taken out by heat-obtaining core efficiently and pass to radiating component.
Another technical scheme of the present utility model is in that on above-mentioned basis, and the surface configuration of described heat-obtaining core has Gold plated Layer or silver coating.So, the heat conductivity of heat-obtaining core can be improved further, strengthen its capacity of heat transmission.
Another technical scheme of the present utility model is in that, on above-mentioned basis, described radiating component is made up of aluminum or aluminum alloy.So, owing to aluminum or aluminum alloy is common materials, plasticity is strong, and less costly, radiating component is made up of aluminum or aluminum alloy, and cost is relatively low, and processing and fabricating is simple.
Another technical scheme of the present utility model is in that on above-mentioned basis, and described radiating component is the sun fancy structure including skeleton and fin composition.So, radiating component adopts sun fancy structure, is made up of skeleton and fin, its good heat dissipation effect, and processing and fabricating is convenient.
Another technical scheme of the present utility model is in that on above-mentioned basis, the cross section of described fin be polygon, crescent, sickleshaped and arch-shaped in one or more combination；The longitudinal section of described fin is rectangle, S shape or spiral type.So, the shape of fin, version are various, it is possible to use different workplaces, meet different cooling requirements.
Another technical scheme of the present utility model is in that, on above-mentioned basis, described radiating component is column, and the outer surface of described radiating component is provided with some fins in the axial direction, and the surface configuration of described fin has some continuous print circular arcs.So, surface configuration at described fin has some continuous print circular arcs, the outer surface of described radiating component forms curved surface rib, add the surface area of straight rib, and enhance the disturbance of radiating component surrounding air, by the natural convection air on curved surface rib surface, the heat of LED chip is discharged in environment, improves the radiating efficiency of radiating component.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED involved by a kind of embodiment of present patent application；
Fig. 2 is a kind of topology view of heat abstractor in LED shown in Fig. 1；
Fig. 3 is a kind of topology view of heat-obtaining core in LED shown in Fig. 1；
Fig. 4 is a kind of front view of radiating component in LED shown in Fig. 1.
In figure:
1LED chip 2 radiating component 21 fin 22 circular arc
3 heat-obtaining core 4 fixtures
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model being described in detail, the description of this part is only exemplary and explanatory, and protection domain of the present utility model should not have any restriction effect.Additionally, the description that those skilled in the art are according to presents, it is possible to the feature in embodiment in presents and in different embodiment is carried out respective combination.
This utility model embodiment is as follows, and as shown in Figures 1 to 4, a kind of LED, including LED chip 1 and heat abstractor, described heat abstractor includes radiating component 2, and described radiating component is provided with cavity；Heat-obtaining core 3, is made up of material with carbon element, and the cavity of described heat-obtaining core 3 shape and size and described radiating component 2 matches, and described heat-obtaining core 3 is fixed in described cavity；The back side of described LED chip 1 luminous source is close to or is embedded on described heat-obtaining core 3.So, due to heat-obtaining core 3, it is made up of material with carbon element, therefore there is higher heat conductivity, its heat conductivity general can at 400-600W/ (m K), higher than the radiator adopting aluminum or aluminum alloy or copper to become, the heat of LED chip 1 can be taken out efficiently and dispels the heat to radiating component 2 along heat-obtaining core 3 transfers.Further, described heat-obtaining core 3 can adopt the material with carbon element of the Graphene composition containing a certain amount of high thermal conductivity to make, and LED chip 1 may be mounted in the different azimuth such as heat-obtaining core 3 top, bottom, the left side or the right, the heat of LED chip 1 can be taken out and along heat-obtaining core 3 transfers by heat-obtaining core 3 efficiently, dispel the heat rapidly again through radiating component 2, therefore, LED is when installing and using, not by the restriction of setting angle, solve the requirement problem of phase-change heat sink directional, can arbitrarily swing.Meanwhile, being fixed in the cavity of radiating component 2 by heat-obtaining core 3, the cavity wall of heat-obtaining core 3 and radiating component 2 can be fixed either directly through interference fit, reduces thermal contact resistance, improves heat transference efficiency.And, the back side of described LED chip 1 luminous source it is close to or is embedded on described heat-obtaining core 3, the heat of LED chip 1 can be taken out and pass to radiating component 2 by heat-obtaining core 3 efficiently.Further, since the density of material with carbon element is at 2 × 103/m3Left and right, less than the density of aluminium section bar, more below the density of copper, thus reducing the weight of whole LED, especially reducing compared to the plume formula heatsink weight that centre is copper core and becoming apparent from.Therefore, the heat abstractor heat-obtaining ability of described LED is strong, radiating efficiency is high, and when using, and not by the restriction of setting angle, can arbitrarily swing, thus extending the service life of LED, what have also been enlarged described LED can range of application.Meanwhile, according to installing needs, it is also possible to arranging some fixtures 4 in described LED, described fixture 4 can be retainer ring or fixing buckle etc., described fixture 4, for the fixing of LED or hanging, facilitates installation and the use of LED.
On the basis of above-described embodiment, in another embodiment of this utility model, described LED can include one or more LED chip 1.As such, it is possible to install the LED chip 1 of varying number as required, meeting different lighting demands, meanwhile, described LED chip may be mounted in the different azimuth such as heat-obtaining core top, bottom, the left side or the right, meets the lighting demand of different azimuth.
On the basis of above-described embodiment, in another embodiment of this utility model, as depicted in figs. 1 and 2, the cavity wall interference fit of described heat-obtaining core 3 and described radiating component 2.As such, it is possible to the thermal contact resistance reduced between heat-obtaining core 3 and radiating component 2, improve the heat transference efficiency between heat-obtaining core 3 and radiating component 2, heat-obtaining core 3 and radiating component 2 can directly assemble simultaneously, by other connectors or fixing device, need not so also allow for installing, saved cost.Adding lubricant it is of course also possible to be coated with on the outer surface of heat-obtaining core or the cavity wall of radiating component, auxiliary is installed and fixing.
On the basis of above-described embodiment, in another embodiment of this utility model, the cross section of described cavity can be other various different shapes such as semicircle circular or oval or polygon.So, as it is shown on figure 3, described heat-obtaining core can also be arranged to other various different shapes such as semi-cylindrical, cylinder, elliptical cylinder-shape or prism, corresponding with the shape of described cavity, to be suitable for different radiating component shape and structure demands.
On the basis of above-described embodiment, in another embodiment of this utility model, the heat conductivity of described material with carbon element is at least 400W/ (m K).So, adopt the material with carbon element having high thermal conductivity as the heat-obtaining core 3 of heat abstractor in LED, its capacity of heat transmission will be high than the heat exchanger core that aluminum or copper are made, and overcomes the bottleneck problem that cause heat cannot shed owing to the axial thermal resistance of aluminium section bar or copper section bar is excessive from LED chip 1.Further, described heat-obtaining core can adopt the material with carbon element containing a certain amount of graphite content to make, to improve heat-obtaining and the radiating effect of heat-obtaining core.
On the basis of above-described embodiment, in another embodiment of this utility model, described LED chip 1 can be pasted and fixed on described heat-obtaining core 3, is provided with heat-conducting silicone grease or heat conductive silica gel between described LED chip 1 and described heat-obtaining core 3.So, described LED chip 1 is pasted and fixed on described heat-obtaining core 3, it is provided with heat-conducting silicone grease or heat conductive silica gel between described LED chip 1 and described heat-obtaining core 3, reduce the thermal contact resistance between LED chip 1 and described heat-obtaining core 3, improve the heat transference efficiency between LED chip 1 and described heat-obtaining core 3, the heat of LED chip 1 can be taken out and pass to radiating component 2 by heat-obtaining core 3 efficiently.
On the basis of above-described embodiment, in another embodiment of this utility model, the substrate of described LED chip 1 can be fixed on radiating component 2 and/or heat-obtaining core 3 by connector, and the back side of described substrate is close to or is embedded on described heat-obtaining core 3.So, the substrate of LED chip 1 is fixed on by connector on radiating component 2 and/or heat-obtaining core 3, so in advance installation fixing hole can be set on radiating component 2 and/or heat-obtaining core 3, being connected by screw or bolt etc. is directly fixed on radiating component 2 and/or heat-obtaining core 3 by the substrate of LED chip 1, firmly install, facilitate, less costly.And the back side of described substrate is close to or is embedded on described heat-obtaining core 3, reduce the thermal contact resistance between LED chip 1 and described heat-obtaining core 3, improve the heat transference efficiency between LED chip 1 and described heat-obtaining core 3, so the heat of LED chip 1 can be taken out and pass to radiating component 2 by heat-obtaining core 3 efficiently.
On the basis of above-described embodiment, in another embodiment of this utility model, the surface of described heat-obtaining core 3 is also provided with Gold plated Layer or silver coating.So, the heat conductivity of heat-obtaining core 3 can be improved further, strengthen its capacity of heat transmission.
On the basis of above-described embodiment, in another embodiment of this utility model, described radiating component 2 can be made up of aluminum or aluminum alloy.So, owing to aluminum or aluminum alloy is common materials, plasticity is strong, and less costly, radiating component 2 is made up of aluminum or aluminum alloy, and cost is relatively low, and processing and fabricating is simple.
On the basis of above-described embodiment, in another embodiment of this utility model, described radiating component 2 can be the sun fancy structure including skeleton and fin composition.So, radiating component 2 adopts sun fancy structure, is made up of skeleton and fin, its good heat dissipation effect, and processing and fabricating is convenient.
On the basis of above-described embodiment, in another embodiment of this utility model, the cross section of described fin can be polygon, crescent, sickleshaped and arch-shaped in one or more combination；The longitudinal section of described fin is rectangle, S shape or spiral type.So, the shape of fin, version are various, it is possible to use different workplaces, meet different cooling requirements.
On the basis of above-described embodiment, in another embodiment of this utility model, shown in as shown in Figure 1, Figure 3 and Figure 4, described radiating component 2 can be column, the outer surface of described radiating component 2 is provided with some fins 21 in the axial direction, and the surface configuration of described fin 21 has some continuous print circular arcs 22.So, surface configuration at described fin 21 has some continuous print circular arcs 22, the outer surface of described radiating component 2 forms curved surface rib, add the surface area of straight rib, and enhance the disturbance of radiating component 2 surrounding air, by the natural convection air on curved surface rib surface, the heat of LED chip 1 is discharged in environment, improves the radiating efficiency of radiating component 2.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a LED, including LED chip and heat abstractor, it is characterised in that: described heat abstractor includes
Radiating component, described radiating component is provided with cavity；
Heat-obtaining core, is made up of material with carbon element, and the cavity of described heat-obtaining core shape and size and described radiating component matches, and described heat-obtaining core is fixed in described cavity；
The back side of described LED chip luminous source is close to or is embedded on described heat-obtaining core.
2. LED according to claim 1, it is characterised in that described LED includes one or more LED chip.
3. LED according to claim 1, it is characterised in that the cavity wall interference fit of described heat-obtaining core and described radiating component.
4. LED according to claim 1, it is characterised in that the cross section of described cavity is semicircle, circular or oval or polygon.
5. LED according to claim 1, it is characterised in that described LED chip is pasted and fixed on described heat-obtaining core, is provided with heat-conducting silicone grease or heat conductive silica gel between described LED chip and described heat-obtaining core.
6. LED according to claim 1, it is characterised in that the substrate of described LED chip is fixed on by connector on radiating component and/or heat-obtaining core, the back side of described substrate is close to or is embedded on described heat-obtaining core.
7. LED according to claim 1, it is characterised in that the surface configuration of described heat-obtaining core has Gold plated Layer or silver coating.
8. LED according to claim 1, it is characterised in that described radiating component is made up of aluminum or aluminum alloy.
9. LED according to claim 8, it is characterised in that described radiating component is the sun fancy structure including skeleton and fin composition；The cross section of described fin be polygon, crescent, sickleshaped and arch-shaped in one or more combination；The longitudinal section of described fin is rectangle, S shape or spiral type.
10. LED according to claim 8, it is characterised in that described radiating component is column, the outer surface of described radiating component is provided with some fins in the axial direction, and the surface configuration of described fin has some continuous print circular arcs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155244.1U CN205402266U (en) | 2016-03-01 | 2016-03-01 | LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155244.1U CN205402266U (en) | 2016-03-01 | 2016-03-01 | LED lamp |
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| CN205402266U true CN205402266U (en) | 2016-07-27 |
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| CN201620155244.1U Expired - Fee Related CN205402266U (en) | 2016-03-01 | 2016-03-01 | LED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795969A (en) * | 2016-08-30 | 2018-03-13 | 通用电气照明解决方案有限责任公司 | Luminaire including radiator structure |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795969A (en) * | 2016-08-30 | 2018-03-13 | 通用电气照明解决方案有限责任公司 | Luminaire including radiator structure |
| US11134618B2 (en) | 2016-08-30 | 2021-10-05 | Current Lighting Solutions, Llc | Luminaire including a heat dissipation structure |
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