CN208237524U - LED lamp - Google Patents

Abstract

Present disclose provides a kind of LED lamp, the LED lamp includes LED light source and radiator.Radiator, which includes that micro-nano compound structure surface is heat sink, takes hot face and radiating surface, wherein, there is hydrophilic nano coating on micro-nano compound structure surface is heat sink, it takes hot face to connect with radiating surface and surrounds a closed cavity, contain a certain amount of liquid working substance in closed cavity, in the cavity to the heat sink application high voltage electric field in micro-nano compound structure surface, EHD effect can be formed.The LED lamp of the disclosure, the ultra-high surface that hydrophilic nano coating has on micro-nano compound structure surface can enhance surface energy and roughness of the liquid working substance in micro-channel, improve surface wetting characteristic, so that heat sink occur continual high-strength composite phase-change heat-exchange, the exchange capability of heat of heat exchanger in LED lamp is enhanced.

Description

LED lamp

Technical field

The disclosure belongs to LED lamp technical field, and in particular to a kind of LED lamp.

Background technique

LED lamp has short low-work voltage, reaction time, energy-efficient, the operation is stable, service life long, pollution-free etc. excellent Point, the urgent need with national economy project construction to high-power illumination light fixture are needed in civil aviaton, harbour, square, large-scale body Educate the LED lamp of the high-power high power density in the fields such as shop.However the input power of LED chip only has 15-30% to turn at present Luminous energy is turned to, remaining is converted into heat, and the accumulation of golf calorific value will cause the raising of LED chip junction temperature, so that luminescence spectrum floats It moves, light decay is done sth. in advance, the lost of life.Therefore heat dissipation is the critical bottleneck during high-power high power density LED component designs and manufactures Problem.When heat flow density is more than 150W/cm2, the critical heat flux that pool boiling phase-change heat-exchange occurs for stock size surface is alreadyd exceed Density may be defined as superelevation heat flow density, and the heat transfer process carried out at this time is known as superpower heat exchange.

Micro slot group composite phase change heat transfer technology is set with the features such as its coefficient of heat transfer height, the operation is stable in high-power electric and electronic It is used widely in standby, it utilizes three-phase line of contact at the extension meniscus that liquid working substance is formed by capillary force in microflute The nucleate boiling of thickness liquid film region liquid working substance answers at the high-intensitive evaporation in neighbouring evaporation thin film region and intrinsic meniscus Phase-change heat-exchange mechanism is closed, realizes high-intensitive exchange capability of heat, is a kind of novel high-performance minute yardstick phase-change heat-exchange technology.But It is that under the conditions of under superelevation heat flow density, the liquid working substance in microflute group can be from top to bottom by with heat source heat flow density Constantly increase and generate it is dry, if it is dry it is lasting occur, liquid working substance can not be replenished in time, and extend high-strength on meniscus Degree evaporation will be unable to occur, and high-intensitive composite phase-change heat exchange can not also carry out, and the exchange capability of heat that microflute group is heat sink is by very big Deterioration.Therefore, when liquid working substance along microflute flowing institute it is attainable extension meniscus on wet length become restriction it is micro- The key point of slot group's exchange capability of heat.

The micro slot group composite phase change heat exchange skill proposed for technological deficiency existing for existing air-cooled or liquid cooling heat transfer technology Heat dissipation of many researchs that art and technique device in combination carry out to device for high-power power electronic or system is solved Problem has certain effect, but does not obtain obvious achievement.The power suffered by the device is increasing, and the hot-fluid faced is close When spending also higher and higher, situation that is dry too early and leading to heat transfer deterioration easily occurs for the liquid working substance in microflute.When heat source function When rate is increasing, heating power is also increasing, and the heat flow density being applied on microflute group's heating surface is also increasing, micro- Heated liquid evaporation aggravation on extension meniscus in slot, liquid film is gradually thinning, and flow resistance increases, and wet length reduces, heat dissipation Ability decline.

Utility model content

(1) technical problems to be solved

Present disclose provides a kind of LED lamps, at least partly to solve technical problem set forth above.

(2) technical solution

Present disclose provides a kind of LED lamps, including LED light source；Cap casing is provided with many apertures, Built-in light among it Head-shield fixed frame；Lamp cap is connect with LED drive power, is powered to LED light source；And radiator, end face passes through Cap casing thereon Fixed frame is connect with Cap casing, comprising: is taken hot face, is connect by Heat Conduction Material with LED light source, comprising: microflute group is heat sink；With And nano coating, it is created on the heat sink surface of microflute group, it is heat sink with the heat sink composition micro-nano compound structure surface of microflute group；Heat dissipation Face surrounds a closed cavity with hot face is taken, contains liquid working substance in closed cavity；And electrode, it is set to closed cavity It is interior, connect by the aperture of Cap casing with high voltage power supply, it is heat sink to micro-nano compound structure surface on liquid working substance apply electric field.

In some embodiments of the present disclosure, closed cavity both ends are provided with electrode outlet, wherein the electrode of one end with draw Terminal is linked together out, and is drawn electric wire in the upper end of closed cavity and connect with high voltage power supply, and electrode leading-out terminal passes through electricity Polar cushion piece and clamp nut are fixed on the outside of closed cavity, and the line electrode of the other end passes through the lower end electrode exit of cavity Ground connection is drawn after son, electrode pads and clamp nut connection.

In some embodiments of the present disclosure, electrode is line electrode, mesh electrode, plate electrode or needle electrode.

In some embodiments of the present disclosure, the radius of line electrode is 0.001~1mm, and length is 1~500mm, with microflute The axially vertical distance that group is heat sink is 0.1~100mm；Mesh electrode length and width are 1~100mm, netted with a thickness of 0.5~10mm The mesh equivalent diameter of electrode is 0.0001~1mm, is 0.1~100mm with the heat sink axially vertical distance of microflute group；Plate electricity The length and width of pole are 1~100mm, and with a thickness of 0.5~10mm, the positive and negative anodes vertical interval of plate electrode is 10~100mm；Needle-shaped electricity The radius of curvature of pole needle point is 0.01~1mm, is 0.1~100mm with the axially vertical distance of microflute group.

In some embodiments of the present disclosure, the voltage of high voltage power supply is 1~50kV.

In some embodiments of the present disclosure, line electrode, the liquid working substance that the microflute group of mesh electrode is heat sink are insulation work Matter；Plate electrode, the liquid working substance that the microflute group of needle electrode is heat sink are insulation working medium or conductive working medium；Insulation working medium be FC72, R113, R123, R141 or pentane；Conductive working medium is distilled water or ethyl alcohol.

In some embodiments of the present disclosure, nano coating is nanoscale planar structures or nanoscale protrusion；Nanometer applies The material of layer is metal, metal oxide, metal fluoride, semiconductor material or organic polymer coating；The thickness of nano coating Degree is 0~1000nm.

In some embodiments of the present disclosure, the surface texture that microflute group is heat sink is micron grooves channel array structure, nanometer slot Channel array structure or micro-nano composite slot channel array structure；The micro-channel cross section that microflute group is heat sink be rectangle, triangle or trapezoidal, Equivalent diameter is 10^-3~1000 μm, the material that microflute group is heat sink is metal, metal oxide, metal nitride, semiconductor material Material, glass or ceramics.

In some embodiments of the present disclosure, the cross section of closed cavity is rectangle, rectangular, triangle or sector；Closing Cavity is air chamber or vacuum chamber.

In some embodiments of the present disclosure, it is 0 °~180 ° that micro-nano compound structure surface is heat sink with horizontal direction angle.

(3) beneficial effect

It can be seen from the above technical proposal that disclosure LED lamp at least has the advantages that one of them:

(1) ultra-high surface that hydrophilic nano coating has on micro-nano compound structure surface can enhance liquid working substance and exist Surface energy and roughness in micro-channel, improve surface wetting characteristic, so that heat sink occur continual high intensity Composite phase-change heat exchange, enhances the exchange capability of heat of heat exchanger in LED lamp；

(2) liquid working substance is applied directional and is led by Coulomb force, dielectrophoresis force and the electroluminescent convergent force under electric field action The effect of drawing increases the mass flow of liquid working substance, reduces thermal resistance, effectively lifts capillary of the liquid working substance in micro-channel and soaks length Degree enhances the heat-energy transducer of heat exchanger in LED lamp so that heat sink occur continual high-strength composite phase-change heat-exchange Power；

(3) wet length for improving microflute group work, quickly effectively and timely mends the liquid working substance in micro-channel It fills, prevents the constricted flow and dry situation compared with liquid working substance under the conditions of high heat flux density, optimization liquid film distribution is further strong The high-intensitive evaporation and heat-exchange performance for having changed extension meniscus liquid working substance in microflute group, avoid the heat exchange of dry initiation unstable and The generation of deterioration；

(4) due to quickly can effectively and timely be supplemented the liquid working substance in micro-channel, so can solve LED light Liquid working substance fills excessive problem in radiator in tool, so that LED lamp is light, small size, lightweight；

(5) pass through nano coating and electric field action, radiator has the ability of superpower heat exchange in LED lamp, so LED light Tool is relatively energy saving, and consumption power is smaller；

(6) since LED lamp radiator is light, small in size, so having a wide range of application.

Detailed description of the invention

Fig. 1 is the schematic diagram of the LED lamp of superpower heat exchange property in the first embodiment of the present disclosure.

Fig. 2 is the top view of the micro capillary groove evaporator in LED lamp shown in Fig. 1.

Fig. 3 a is the rectangular cross section schematic diagram of radiator closed cavity shown in Fig. 2.

Fig. 3 b is the square cross section schematic diagram of radiator closed cavity shown in Fig. 2.

Fig. 3 c is the triangular cross section schematic diagram of radiator closed cavity shown in Fig. 2.

Fig. 3 d is the fan shaped cross section schematic diagram of radiator closed cavity shown in Fig. 2.

Fig. 4 is the structure and sealing arrangement form of radiator closed cavity shown in Fig. 2.

Fig. 5 is the schematic diagram that microflute group is heat sink in radiator shown in Fig. 2.

Fig. 6 is the microflute group structure figure that nano coating is nanoscale planar structures in radiator shown in Fig. 2.

Fig. 7 is the microflute group structure figure that nano coating is nanoscale protrusion in radiator shown in Fig. 2.

Fig. 8 is first embodiment of the present disclosure central electrode schematic diagram.

Fig. 9 is first embodiment of the present disclosure middle line array electrode schematic diagram.

Figure 10 is that EHD strengthens the heat sink wetting spy in micro-nano compound structure surface in closed cavity in the first embodiment of the present disclosure The effect picture of property and heat exchange property.

Figure 11 be the second embodiment of the present disclosure in superpower heat exchange property LED lamp radiator in microflute group it is heat sink with it is electric The schematic diagram of pole.

Figure 12 be the third embodiment of the present disclosure in superpower heat exchange property LED lamp radiator in microflute group it is heat sink with it is electric The schematic diagram of pole.

Figure 13 be the fourth embodiment of the present disclosure in superpower heat exchange property LED lamp radiator in microflute group it is heat sink with it is electric The schematic diagram of pole.

[embodiment of the present disclosure main element symbol description in attached drawing]

00-LED light source；

10- micro-nano compound structure surface is heat sink to take hot face；

11- microflute group is heat sink；12- nanoscale planar structures；

13- nanoscale protrusion；

20- electrode；

21- line electrode；22- linear array electrode；

23- mesh electrode；24- needle electrode；

25- plate electrode；26- electrode leading-out terminal；

27- clamp nut；28- electrode pads；

30- heat source；

The closed cavity of 40- radiator；

41- radiator closed cavity rectangular section；42- radiator closed cavity square-section；

43- radiator closed cavity triangular-section；44- radiator closed cavity sector crosssection；

45- liquid working substance；

50- high voltage power supply；

51- electric wire；

60- radiator；

70- lamp cap；

80- Cap casing；

81- aperture；82- Cap casing fixed frame；

90- radiating surface；

The fin of 91- radiator.

Specific embodiment

Present disclose provides a kind of LED lamp, the LED lamp includes LED light source and radiator.Radiator includes micro-nano Composite structure surface is heat sink to take hot face and radiating surface, wherein has hydrophilic nano coating on micro-nano compound structure surface is heat sink, takes Hot face is connected with radiating surface surrounds a closed cavity, a certain amount of liquid working substance is contained in closed cavity, in the cavity to micro- Nano compound structure surface is heat sink application high voltage electric field, can form EHD effect.The LED lamp of the disclosure, micro-nano compound structure surface The ultra-high surface that upper hydrophilic nano coating has can enhance surface energy and roughness of the liquid working substance in micro-channel, change It has been apt to surface wetting characteristic, so that heat sink occur continual high-strength composite phase-change heat-exchange, has enhanced in LED lamp The exchange capability of heat of heat exchanger.

For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference The disclosure is further described in attached drawing.

Disclosure some embodiments will be done referring to appended attached drawing in rear and more comprehensively describe to property, some of but not complete The embodiment in portion will be shown.In fact, the various embodiments of the disclosure can be realized in many different forms, and should not be construed To be limited to this several illustrated embodiment；Relatively, these embodiments are provided so that the disclosure meets applicable legal requirement.

In first exemplary embodiment of the disclosure, a kind of LED lamp is provided.Fig. 1 is the implementation of the disclosure first The structural schematic diagram of example LED lamp.As shown in Figure 1, disclosure LED lamp includes: LED light source 00；Radiator 60, top are set Set opening, LED light source 00 is pasted on the taking on hot face of radiator 60；Lamp cap 70, electric connecting member and LED drive power connect It connects, powers to LED light source 00；And Cap casing 80, it is connect by Cap casing fixed frame 82 with 60 upper surface of radiator, among it Many apertures 81 are provided with, aperture 81 draws the electric wire 51 at 60 top of radiator, with high-voltage electricity heat sink inside strong radiator Source 50 connects.

Each component part of the present embodiment LED lamp is described in detail individually below.

LED light source 00 is high-power COB integrated LED light source in Fig. 1, on the close side plane for pasting radiator.

Cap casing 80 is the disk that many apertures 81 are provided among one in Fig. 1, and 81 one side of aperture plays hot-air circulation Effect, on the one hand the electric wire 51 on radiator is drawn, is connect with high voltage power supply 50.

Fig. 2 is the top view of the micro capillary groove evaporator in LED lamp shown in Fig. 1.As shown in Fig. 2, its appearance is one too The radiator of positive flower pattern, radiator, which includes that micro-nano compound structure surface is heat sink, takes hot face 10 and radiating surface 90, wherein micro-nano is compound There is hydrophilic nano coating on body structure surface is heat sink；It takes hot face 10 and radiating surface 90 to connect and surrounds a closed cavity 40, close Contain a certain amount of liquid working substance in cavity 40, and in the cavity, it is high by electrode application heat sink to micro-nano compound structure surface Piezoelectric field forms EHD effect；Heat source is connect by high thermal conductivity material heat-conducting silicone grease, heat conductive silica gel or graphite with hot face 10 is taken.

In closed cavity 40, liquid working substance is injected, high voltage electric field is applied to liquid working substance, microflute group is multiple in itself micro-nano Under the driving for closing capillary structure effect, a part of liquid working substance enters in micro-channel and the certain altitude that climbs.In micro-channel face Surface on arrange wired electrodes, liquid working substance is climbed under the electric field force effect of positive very high voltage by drives edge micro-channel in time It is raised to higher moistening height, the composite phase-change heat exchange effect of superhigh intensity evaporation and boiling occurs.After heat source releases heat, take Hot face 30 receives and transmits the heat of heat source generation, and high-intensitive evaporation and boiling composite phase-change heat exchange occur in cavity, releasing Heat is shed by several radiated ribs 91 being connected with radiator to external environment.

Fig. 3 a~3d is the cross-sectional view of radiator closed cavity shown in Fig. 2.As shown in Fig. 3 a~3d, radiator envelope The cross section of closed chamber body 40 be rectangle (as shown in Figure 3a), rectangular (as shown in Figure 3b), triangle (as shown in Figure 3c), sector (as shown in Figure 3d).Closed cavity 40 is air chamber or vacuum chamber.

Fig. 4 is the structure and sealing arrangement form of radiator closed cavity shown in Fig. 2.As shown in figure 4, radiator closing chamber 40 both ends of body are provided with electrode outlet 26, and wherein the electrode with electrode terminal of one end are linked together, and in the upper end of closed cavity Electric wire 51 is drawn, electric wire 51 is connect after drawing with high voltage power supply 50, and electrode leading-out terminal 26 is more than the closed cavity of radiator 40 outsides, are attached and are fixed by electrode pads 28 and clamp nut 27.Closed cavity is metal cavitg, the lower end of cavity The line electrode 21 of the other end is contacted by electric wire one end with inside cavity, and by electrode leading-out terminal 26 and electrode pads 28 and Clamp nut 27 draws ground connection after connecting.

Fig. 5 is the schematic diagram that microflute group is heat sink in radiator shown in Fig. 2.As shown in figure 5, micro-nano compound structure surface is heat sink Including microflute group heat sink 11 and nano coating 12, wherein nano coating 12 is created on the surface of microflute group heat sink 11, with microflute group Heat sink 11 constitute micro-nano compound structure surface heat sink 10；Electrode 20 is line electrode, high voltage power supply is connected, to micro-nano compound structure The liquid working substance that surface is heat sink on 10 applies electric field.

As shown in figure 5, the surface texture of microflute group heat sink 11 be micron grooves channel array structure, nanometer conduit array structure or Micro-nano composite slot channel array structure.

Microflute group is heat sink 11 micro-channel cross section be rectangle, triangle or trapezoidal；Microflute group is heat sink 11 micro-channel it is horizontal The equivalent diameter in section is 10^-3~1000 μm；Microflute group is heat sink 11 surfacing be metal, metal oxide, nitride metal Object, semiconductor material, glass or ceramics.

A length of 80~the 150mm of the apparent size that microflute group is heat sink, width are 20~50mm；The size of conduit be groove depth 0.05~ 1mm, 0.05~1mm of groove width, 0.05~1mm of separation；

Nano coating 12 be nanoscale planar structures or nanoscale protrusion, wherein；Nano coating is nanometer-level plane knot The microflute group structure figure of structure is as shown in fig. 6, nano coating is as shown in Figure 7 for the microflute group structure figure of nanoscale protrusion.Nanometer Coating is to increase micro-structure surface surface energy for strengthening micro-structure surface hydrophily, roughness.

The material of nano coating 12 is that metal, metal oxide, metal fluoride, semiconductor material or organic polymer apply Material；Hydrophilic coating is aluminium oxide, titanium oxide or zinc oxide；Nano coating 12 with a thickness of 0~1000nm.

Electrode 20 is line electrode in the present embodiment, and line electrode includes single line electrode shown in Fig. 8 and line shown in Fig. 9 Array electrode.

And liquid working substance line electrode arrangement is characterized in line electrode as anode, and one end is in the upper surface of liquid working substance, i.e., It does not contact, the other end is immersed in liquid working substance.Cathode is the array frid or other charged metal structures of micro-nano compound structure Shell.

Fig. 8 is please referred to, line electrode radius is 0.3~1mm, and length is 50~150mm, and liquid working substance did not had line electrode height 5~20mm is adjusted with heat sink axially vertical distance in 1~20mm.

In the present embodiment, high voltage control is adjusted within the scope of 2~20kV.

Liquid working substance is insulating liquid working medium, including FC72, R113, R123, R141, pentane etc..

It is vacuum condition or condition of normal pressure in closed cavity.

It should be noted that electrode 20 can also be mesh electrode, plate electrode and needle electrode.

Figure 10 is the effect that EHD strengthens the heat sink wetting characteristics in micro-nano compound structure surface and heat exchange property in closed cavity Figure.As shown in Figure 10, microflute group is heat sink by realizing superpower heat exchange in terms of following two in the embodiment of the present disclosure:

(1) nano coating is prepared on microflute group is heat sink, forms micro-nano compound structure surface heat sink 10.Nano coating has Hydrophily, stability, nano coating effect are the wetabilitys by strengthening microflute group heat sink surface, improve the capillary profit of microflute group Wet ability keeps micro-nano compound structure heat sink in tilt angle even vertical placement, and capillary moistening height is higher, realizes effect As shown in Figure 10.

In application, heat source is by the high thermal conductivity materials connection such as heat-conducting silicone grease, heat conductive silica gel, graphene, heat conduct to Microflute group is heat sink, and the vertical micro-nano compound structure heat sink 10 for placing application is first in the capillarity of its own micro-nano compound structure Under, liquid working substance 45 climbs along its array micro-channel to certain moistening height, when the superelevation heat flow density that heat source distributes is hung down Directly when heat sink direction inputs, heat sink heat exchange surface major part region is wetted, occurs in microflute on extension meniscus at this time The high-strength composite phase-change heat-exchange of the nucleate boiling of the evaporation in thin liquid film region and thick liquid film, strengthens the heat-exchange performance of liquid working substance 45 Energy.The spreader surface that heat is delivered to outside closed cavity 40 simultaneously radiates.In closed cavity 40, composite phase-change occurs The steam of heat exchange encounters peripheral wall surface and condenses, and condensing droplet, which reenters, realizes circulation in liquid working substance.

(2) EHD effect is generated in the electric field that micro-nano compound structure heat sink surface applies liquid working substance, the effect realized Fruit is as shown in Figure 10.

In application, EHD effect is by the Coulomb force of electric field, the collective effect of dielectrophoretic force and electroluminescent convergent force, once Occur under superelevation heat flow density, in micro-channel part it is dry when, the various different forms arranged on the surface that conduit faces Electrode 20 on micro-nano compound structure surface 10 45 generation of liquid working substance act on, liquid working substance is on the one hand generated Existing moistening height, hydrophilic nano coating on another aspect micro-nano compound structure surface are lifted in time under electric field force effect The ultra-high surface having also can further strengthen the wetting characteristics of microflute, so that heat sink occur continual high intensity Composite phase-change heat exchange not only enhances heat sink exchange capability of heat, but also improves heat sink be resistant to critical heat flux density, finally makes The heat sink heating problem that can solve high-power, superelevation heat flow density power electric component, further, the heat quilt of releasing It is transmitted to outside closed cavity and carries out cooling.Heat sink timely fluid infusion ability ensure that the reliable of heat sink superpower heat exchange property Property.

The calorific value of LED light source is compound by the EHD reinforcing micro-nano that radiator is occurred in micro-channel using liquid working substance The composite phase-change heat transfer process of the evaporation of structure high intensity and boiling is taken away, and is discharged into ambient enviroment via the fin of radiator again In；The LED light source issues the stable light of luminous flux and meets using necessary requirement while guaranteeing good heat radiating.

So far, the introduction of first embodiment of the present disclosure LED lamp finishes.

In second exemplary embodiment of the disclosure, a kind of LED lamp is provided.

Figure 11 is the heat sink schematic diagram with electrode of microflute group in second embodiment of the present disclosure LED lamp.As shown in figure 11, with The LED lamp of first embodiment is compared, and the difference of the present embodiment radiator is:

Electrode is mesh electrode 23.The form of this electrode arrangement is electrode as anode, and one end is in liquid working substance Above, i.e., it is not contacted with liquid working substance, the other end is immersed in liquid working substance.Cathode be micro-nano compound structure array frid or The shell of other charged metal structures.

A length of 80~the 150mm of the apparent size of mesh electrode, width be 20~50mm, then the equivalent diameter of mesh be 0.5~ 1mm, liquid working substance did not had mesh electrode 5~20mm of height, adjusted within the scope of 1~20mm with heat sink axially vertical distance.

In closed cavity, liquid working substance is injected, high voltage electric field is applied to liquid working substance, microflute group is compound in itself micro-nano Under the driving of capillary structure effect, a part of liquid working substance enters in micro-channel and the certain altitude that climbs.It is faced in micro-channel Surface on be disposed with Figure 11 mesh electrode, liquid working substance under the electric field force effect of positive very high voltage by drives edge micro-channel and When climb to higher moistening height, the composite phase-change heat exchange effect of superhigh intensity evaporation and boiling occurs.

In order to achieve the purpose that brief description, any technical characteristic for making same application is described all in above-described embodiment one And in this, without repeating identical narration.

So far, a kind of LED lamp introduction of the second embodiment of the present disclosure finishes.

In the third exemplary embodiment of the disclosure, a kind of LED lamp is provided.

Figure 12 is the heat sink schematic diagram with electrode of microflute group in third embodiment of the present disclosure LED lamp.As shown in figure 12, with The LED lamp of first embodiment is compared, and the difference of the present embodiment radiator is:

Electrode is needle electrode 24, this kind of electrode arrangement form is electrode as the hanging arrangement of anode, and cathode is multiple for micro-nano Close the array frid of structure or the shell of other charged metal structures.

The radius of curvature of needle electrode needle point is 0.05~0.5mm, can be in 1~20mm range with heat sink axially vertical distance Interior adjusting.

Liquid working substance be can be insulating liquid working medium, including FC72, R113, R123, R141, pentane etc.；It can also be with For conductive working medium, including distilled water, ethyl alcohol etc..

It is condition of normal pressure in closed cavity.

In closed cavity, liquid working substance is injected, high voltage electric field is applied to liquid working substance, microflute group is compound in itself micro-nano Under the driving of capillary structure effect, a part of liquid working substance enters in micro-channel and the certain altitude that climbs.It is faced in micro-channel Surface on be disposed with needle electrode shown in Figure 12, needle electrode generates suction force, lifting is in battle array in time by ionized air It with the liquid working substance of certain altitude in column channel structure, promotes moistening height further, superhigh intensity evaporation and boiling occurs The composite phase-change heat exchange effect risen.

In order to achieve the purpose that brief description, any technical characteristic for making same application is described all in above-described embodiment one And in this, without repeating identical narration.

So far, a kind of LED lamp introduction of the third embodiment of the present disclosure finishes.

In the 4th exemplary embodiment of the disclosure, a kind of LED lamp is provided.

Figure 13 is the heat sink schematic diagram with electrode of microflute group in fourth embodiment of the present disclosure LED lamp.As shown in figure 13, with The LED lamp of first embodiment is compared, and the difference of the present embodiment radiator is:

Electrode is plate electrode 25, this kind of electrode arrangement is characterized in that electrode did not had liquid as anode in closed cavity Working medium, cathode are fixed on vertical frid upper end.

The size length and width of plate electrode positive and negative anodes are 10~30mm, and anode is immersed in liquid working substance, positive electrode and negative electrode Axial distance is 40~100mm.

Liquid working substance can be insulating liquid working medium, including FC72, R113, R123, R141, pentane；Or it leads Electrician's matter, including distilled water, ethyl alcohol.

It is vacuum condition or condition of normal pressure in closed cavity.

In closed cavity, liquid working substance is injected, high voltage electric field is applied to liquid working substance, microflute group is compound in itself micro-nano Under the driving of capillary structure effect, a part of liquid working substance enters in micro-channel and the certain altitude that climbs.It is faced in micro-channel Surface on be disposed with plate electrode shown in Figure 12, since positive plate is placed in liquid working substance, liquid working substance is just high Under the electric field force effect of voltage by drives edge micro-channel climb in time to certain moistening height, occur superhigh intensity evaporation and The composite phase-change heat exchange of boiling acts on.

So far, the introduction of fourth embodiment of the present disclosure LED lamp finishes.

So far, attached drawing is had been combined the embodiment of the present disclosure is described in detail.According to above description, art technology Personnel should be provided with clear understanding to the LED light of the superpower heat exchange property of the present invention.

It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously It is not limited only to various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out letter to it It singly changes or replaces.

In conclusion the LED lamp includes LED light source and radiator present disclose provides a kind of LED lamp.Heat dissipation Device, which includes that micro-nano compound structure surface is heat sink, takes hot face and radiating surface, wherein has hydrophily on micro-nano compound structure surface is heat sink Nano coating takes hot face to connect with radiating surface and surrounds a closed cavity, and a certain amount of liquid working substance is contained in closed cavity, To the heat sink application high voltage electric field in micro-nano compound structure surface in cavity, EHD effect can be formed.The LED lamp of the disclosure, micro-nano are multiple Surface energy of the liquid working substance in micro-channel can be enhanced by closing the ultra-high surface that hydrophilic nano coating has on body structure surface And roughness, surface wetting characteristic is improved, so that heat sink occur continual high-strength composite phase-change heat-exchange, is strengthened The exchange capability of heat of heat exchanger in LED lamp.

It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ", " right side " etc. is only the direction with reference to attached drawing, not is used to limit the protection scope of the disclosure.Through attached drawing, identical element by Same or similar appended drawing reference indicates.When may cause understanding of this disclosure and cause to obscure, conventional structure will be omitted Or construction.

Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.It is located in front of the element Word "a" or "an" does not exclude the presence of multiple such elements.

Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect, Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect The disclosure of shield requires features more more than feature expressly recited in each claim.More precisely, as following Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore, Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself All as the separate embodiments of the disclosure.

Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure Within the scope of shield.

Claims (10)

1. a kind of LED lamp characterized by comprising

LED light source (00)；

Cap casing (80) is provided with many apertures (81) among it, built-in Cap casing fixed frame (82)；

Lamp cap (70), connect with LED drive power, powers to the LED light source (00)；And

Radiator (60), end face is connect by the Cap casing fixed frame (82) with the Cap casing (80) thereon, comprising:

Hot face (10) are taken, are connect by Heat Conduction Material with the LED light source (00), comprising:

Microflute group is heat sink (11)；And

Nano coating (12) is created on the surface of the microflute group heat sink (11), constitutes with the microflute group heat sink (11) micro- Nano compound structure surface is heat sink；

Radiating surface (90) takes hot face (10) to surround a closed cavity (40), contains liquid in the closed cavity (40) with described Body working medium；And

Electrode (20) is set in the closed cavity (40), passes through the aperture (81) and high-voltage electricity of the Cap casing (80) Source (50) connection, it is heat sink to the micro-nano compound structure surface on liquid working substance apply electric field.

2. LED lamp according to claim 1, which is characterized in that

Closed cavity (40) both ends are provided with electrode outlet, and wherein the electrode Yu electrode leading-out terminal (26) of one end are linked as one Body, and electric wire (51) are drawn in the upper end of closed cavity and are connect with high voltage power supply (50), the electrode leading-out terminal (26) is logical It crosses electrode pads (28) and clamp nut (27) is fixed on the outside of closed cavity, the lower end that the line electrode of the other end passes through cavity Ground connection is drawn after electrode leading-out terminal (26), electrode pads (28) and clamp nut (27) connection.

3. LED lamp according to claim 1, which is characterized in that

The electrode (20) is line electrode, mesh electrode, plate electrode or needle electrode.

4. LED lamp according to claim 3, which is characterized in that

The radius of the line electrode is 0.001~1mm, and length is 1~500mm, is hung down with the axial direction of the microflute group heat sink (11) Straight distance is 0.1~100mm；

The mesh electrode length and width are 1~100mm, and with a thickness of 0.5~10mm, the mesh equivalent diameter of the mesh electrode is 0.0001~1mm, the axially vertical distance with the microflute group heat sink (11) are 0.1~100mm；

The length and width of the plate electrode are 1~100mm, and with a thickness of 0.5~10mm, the positive and negative anodes vertical interval of plate electrode is 10 ~100mm；

The radius of curvature of the needle electrode needle point is 0.01~1mm, is 0.1~100mm with the axially vertical distance of microflute group.

5. LED lamp according to claim 1, which is characterized in that

The voltage of the high voltage power supply is 1~50kV.

6. LED lamp according to claim 3, which is characterized in that

The line electrode, the liquid working substance that the microflute group of mesh electrode is heat sink are insulation working medium；

The plate electrode, the liquid working substance that the microflute group of needle electrode is heat sink are insulation working medium or conductive working medium；

The insulation working medium is FC72, R113, R123, R141 or pentane；

The conduction working medium is distilled water or ethyl alcohol.

7. LED lamp according to claim 1, which is characterized in that

The nano coating (12) is nanoscale planar structures or nanoscale protrusion；

The material of the nano coating (12) is metal, metal oxide, metal fluoride, semiconductor material or organic polymer Coating；

The nano coating (12) with a thickness of 0~1000nm.

8. LED lamp according to claim 1, which is characterized in that

The surface texture of the microflute group heat sink (11) is that micron grooves channel array structure, nanometer conduit array structure or micro-nano are compound Conduit array structure；

The micro-channel cross section of the microflute group heat sink (11) is rectangle, triangle or trapezoidal, equivalent diameter 10^-3~1000 μ m；

The material of the microflute group heat sink (11) is metal, metal oxide, metal nitride, semiconductor material, glass or pottery Porcelain.

9. LED lamp according to claim 1, which is characterized in that

The cross section of the closed cavity (40) is rectangle, rectangular, triangle or sector；

The closed cavity (40) is air chamber or vacuum chamber.

10. LED lamp according to claim 1, which is characterized in that

It is 0 °~180 ° that the micro-nano compound structure surface is heat sink with horizontal direction angle.