CN102818238A - Liquid container wind-cylinder-type LED (light-emitting diode) lamp - Google Patents
Liquid container wind-cylinder-type LED (light-emitting diode) lamp Download PDFInfo
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- CN102818238A CN102818238A CN2012102473778A CN201210247377A CN102818238A CN 102818238 A CN102818238 A CN 102818238A CN 2012102473778 A CN2012102473778 A CN 2012102473778A CN 201210247377 A CN201210247377 A CN 201210247377A CN 102818238 A CN102818238 A CN 102818238A
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Abstract
The invention discloses an LED (light-emitting diode) lamp; liquid is filled in a sealed inner container cavity formed by an inner hollow cavity of a metal radiator, an LED (light-emitting diode) light source plate and a sealing upper cover; a flexible sealing upper cover is arranged for guaranteeing the sealing effect, and an insertion type sealing upper cover is arranged for reducing the usage of the liquid; a rigid sealing upper cover is arranged and the sealing cavity is pumped to be in a negative pressure state, and the temperature of the LED (light-emitting diode) light source plate is suppressed by phase change energy of the liquid; the energy is absorbed by cooling liquid on the back of the LED (light-emitting diode) light source plate and then transmitted to the metal radiator; a chimney type air draft cylinder with large thermal resistance is packaged/embedded outside the radiator, the air, which is in adequate contact and efficient heat exchange with fins of the radiator, forms ascending air draft flow in the wind cylinder, a build-in conflux hood is arranged to improve the running of the air flow, and a fan is added when necessary. The liquid container wind-cylinder-type LED (light-emitting diode) lamp has the advantages that the transmitted energy is efficiently absorbed by the liquid; the temperature is suppressed by the phase change energy; the self-adaptive air draft radiation is quite, safe and energy-saving; and the small fan is used for assisting, so that the performances of medium-power and large-power LED (light-emitting diode) lighting products are improved.
Description
[technical field]
The present invention relates to a kind of LED lighting, be specifically related to a kind of liquid courage wind cylinder type LED illuminating lamp.The invention belongs to the energy-conserving and environment-protective field of illuminating lamps.
[background technology]
The LED illumination is emerging green illumination high-tech industry, and the led light source product has environmental protection, energy-efficient characteristics, is used widely.Be different from other artificial electric light source, obtain the work of led light source device stability and high efficiency, need the led chip operating temperature be controlled within certain scope.Research shows: every rising 10 degree of LED junction temperature, and its luminous efficiency approximately descends 3%; If surpass the limiting value of LED junction temperature, will cause LED to lose efficacy, even cause led light source device permanent damage.At present, based on the application product of LED lighting source, its main flow heat dissipation design scheme is: rely on thermal conductivity factor material heat that led chip the is sent substrate heat-dissipating casing that leads again that leads as soon as possible preferably.As for the shell radiator portion, adopt the different heat-dissipation lamp housing of the good made of thermal conductivity factor on the one hand, realize heat radiation through its ambient air convection current; On the other hand,, adopt sapecial coating or film, strengthen the thermal radiation capability of the shell that is heated, realize accelerating the purpose of cooling except the conventional art means.In addition, adopt schemes such as heat-pipe apparatus, air blast cooling, also of common occurrence, being that The Eight Immortals cross the sea shows what one's be.
Rely on the LED lamp housing of different materials and various moulding to carry out natural heat dissipation; For lower-powered LED illuminating lamp; As if can satisfy its heat radiation requirement to a certain extent; But high brightness, ultra-high brightness LED light source power consumption are big, and its heat radiation requires unusual severe, even are difficult to satisfy basic heat radiation requirement.For satisfying high-power LED light source heat radiation requirement, common mentality of designing is, strengthens heat sink size and weight, and some then increases electric fan and carries out air blast cooling.
The led light source substrate that forms based on the LED die package, with the alap mode of thermal resistance, the overwhelming majority with led chip heat that produces when the electrified light emitting is transmitted to substrate as soon as possible.The design of common radiator structure is that substrate is installed on radiator/shell with the mode of low thermal resistance as far as possible, and the heat that makes LED derived by substrate is passed to radiator/shell as early as possible, by its radiating mode, lowers the temperature for the led light source substrate and then for led chip.Design like this; If not increasing fan; But rely on nature to cool, under identical aluminum alloy materials and similar structures moulding situation, radiating effect just depends on size and weight simply: then the efficiently radiates heat area is more greatly a bit for size; Heavy Weight a bit then thermal capacity more greatly, some big heavier radiating effects maybe be just quite a lot of.Yet as lighting, its size, weight are not hard-core, and the big change of heat-dissipation lamp housing change is heavy, not only vivid deterioration, also certainly will cause totle drilling cost to increase, and especially can cause use inconvenience and round market refusal.
The radiator that is used for the LED lighting at present, generally adopt the aluminium alloy manufacturing: or casting forming, or be squeezed into section bar machined moulding again.This LED lamp housing/radiator based on aluminium alloy, good heat dispersion performance, the machine-shaping degree is high, good product consistency; But simultaneously also have distinct disadvantage, it is higher, particularly when international non-ferrous metal market price fluctuation, bigger to cost impact to comprise that [1] weight lays particular stress on [2] cost.Yet its most fatal shortcoming is: metal material is the good conductor of electricity, makes LED electric light source heat-dissipating casing with metal material, the hidden danger existence that has electric leakage to get an electric shock even be struck by lightning!
From the heat radiation angle analysis, even if take aforementioned various measure, but to the big especially higher LED lighting of power density of power, it is haltingly difficult that its heat dissipating state remains, and is difficult in high efficiency and heat radiation and low-cost two aspects get both fish and the bear's paw made.As for the potential safety hazard of aluminium alloy heat radiator conduction, then also have no time to attend to for the moment, really be " it repaiies Endless Way far ".
To this situation, " I will seek up and down ".The present invention adopts ' liquid courage wind cylinder type LED lamp ' technical scheme, provides reasonable and succinct structural design, lower cost processing and manufacturing, thereby has solved the application difficult problem of this puzzlement industry preferably.
[summary of the invention]
The technical problem that the present invention will solve provide a kind of reasonable in design, manufacturing process ripe, satisfy that high-power/high power density led light source heat radiation requires, the LED lighting radiator structure design of not only safe and reliable but also with low cost, excellent performance.This ' liquid courage wind cylinder type LED lamp ' technical scheme reaches one of approach of this target just.
The LED lighting source generally adopts the aluminium alloy processing component to be used for heat radiation; Heronsbill aluminium section bar for example; Though as one of main thermal component, be close to and be installed in heronsbill aluminium section bar lower end by the led light source plate based on the heronsbill aluminium alloy extrusions for the comment of present design, pack alloy radiator and other metal or nonmetal radiator also possess radiating effect; Processing mode is slightly different with the heronsbill aluminium section bar, but the essence effect is similar.For ease of discussing, some places specifically do not indicate to be based on which kind of material in the text, and are referred to as ' metal heat sink ' or ' radiator '.
Present technique scheme improvements are: [1] cavities in metal heat sink, and promptly said LED lamp inner bag place, the perfusion cooling liquid, heated liquid both capable of using flows, and takes away led light source plate heat in a large number, passes to metal heat sink rapidly; Can annular seal space be pumped into negative pressure again, rely on the liquid phase-change cooling; Realize the low-cost high-efficiency cooling-down effect.[2] according to the chimney draught principle; At the outer parcel/nested wind cylinder type insulation crust of metal heat sink; Electricity consumption is safety but also force ambient air air admission hole gets into metal heat sink radiating fin bottom from shirt rim, air duct bottom not only; The radiating fin surface of upwards flowing through, give full play to the radiating fin surface area greatly, just with air exchange heat characteristics, realize the best radiating effect of air blast cooling/accurate air blast cooling.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: perfusion fluid in LED lamp metal heat sink sealing internal bladder cavity, in the metal heat sink outside chimney draught formula insulation cover---air duct is installed.
Said liquid is cooling fluid, first-selected light water/aqueous solution, and drawing materials makes things convenient for cost low.For reducing its condensation temperature, can suitably mix antifreezing agent such as methyl alcohol, ethanol or other.Optional other liquid such as methyl alcohol, ethanol and other liquid or its solution also can in addition.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: said liquid main component preferred water, can mix an amount of antifreezing agent by reducing the setting of condensation point temperature; Other also can be selected for use like methyl alcohol or ethanol.
Constitute inner bag annular seal space critical piece and have three: [1] hollow type radiator, like heronsbill aluminium section bar [2] bottom led light source plate, rigidity conductive sole plate [3] the top seal loam cake of led light source plate can be installed maybe.Consider [1] coolant temperature changeable volume along with change, the rigid structure annular seal space is difficult to bear significantly the temperature difference and produces big stress and possibly cause seal failure.Radiator and base plate are rigid elements; Have only the sealing loam cake to possess flexibility and could absorb warm varying stress, the simplest sealing loam cake is plate, for ease of process monitoring; Preferably by the transparent or semitransparent rubber manufacturing and the injection allocation mouth of a river, loam cake is transparent to help to observe the liquid situation.[2] though the many thermal capacitances of liquid are big, help stabilizing the light source board temperature gradient, can influence the light fixture whole structure.For realize positiver sealing and guarantee that high-efficiency heat conduction uses liquid again less that we are with the flexible seal member of likeness in form baby bottles nipple as far as possible.Its shape is made with rubber or other flexible sealing material also as old-fashioned carnival hat or other moulding.For narrating conveniently general designation ' sealing loam cake '.
The head of sealing loam cake shape such as baby nipple is inserted in the cooling fluid, its end seal shirt rim is compressed with rigid seal packing ring or seal cover board be installed in radiator such as heronsbill section bar upper end, cover tightly similar again as feeding bottle that nipple is packed into conversely.Insert nipple type sealing loam cake and occupy the sealing cavity space, the liquid consumption reduces light fixture weight and descends.As long as the moulding of sealing loam cake is reasonable, heated liquid flows smooth and easy, just can guarantee high efficiency transmission heat, helps led light source plate fast cooling.Simultaneously, for the stress that cooling fluid causes Volume Changes to produce because of variations in temperature, then deformation is dissolved with defeating a force with a tenderness by the sealing cover unit, guarantees that sealing effectiveness is perfectly safe.
The shape of sealing cover unit can have multiple design, except the simple flat plate type, both can be as old-fashioned carnival hat, and straight stupefied right angle, edge, or the corner suitable chamfering of part that it is too stiff becomes slick and sly; Also can look like baby nipple, corner is slick and sly, and the lines flow smoothly.In addition, can also axially or laterally bear fold, be easy to folded deformation, so that absorption liquid temperature changeable volume changes the stress that is produced better as ' bellows ' along it.As the extension of sealing loam cake flexible design, these parts also can be used rigid material, for example metal material or plastics etc.But the rigid material parts must be considered when design and manufacturing and dissolve the stress that the warm sell of one's property is given birth to, can increase folding or irrigation canals and ditches on the structure.Also can hard and softly combine: become the part of parts to adopt rigid material, mounting flange and go up the pipe part for example, the flexible material that another part seals again with good springiness is for example with rubber fingerstall replacement baby nipple type compliant member top nipple head part.Shape is various in a word, and major function is: [1] sealing [2] absorbs warm varying stress; Auxiliary function is: reduce the liquid consumption to reduce light fixture weight.
A kind of liquid courage wind cylinder type LED lamp; It is characterized in that: the position is corresponding to sealing mounted LEDs light source board, at the other end of the metal heat sink inner bag annular seal space that is surrounded; With tiling or inserted mode the sealing cover unit is installed; These parts are flexibility, rigidity or hard and soft be combined into, and component shape is plate or shape such as baby nipple and distortion thereof.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: said sealing cover unit by just, gentle two parts or a few part form: rigid element mainly is used as parts-moulding, and flexible portion is mainly used in absorption stress.
The manufactured materials of said sealing loam cake compliant member should have elasticity/flexibility, can select rubber, plastics, nylon and other raw material for use, for example selects EPDM for use, dependable performance, raw material abundance, with low cost.In order further to reduce manufacturing cost, can also select for use the moulding of flexible fiber aggregate to apply with the encapsulant manufacturing again.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: said sealing loam cake compliant member, its manufactured materials tool elasticity or flexibility can be transparent, first-selected rubber such as EPDM, inferior plastics, nylon, the silica gel etc. of selecting.
In this design, the sealing cover unit plays good double effects: [1] fluid temperature changes and to cause stress changes and sealing effectiveness is constant; [2] reduce the cooling fluid use amount, reduce light fixture weight.
Another liquid courage wind cylinder type LED lamp cooling scheme is according to negative pressure Refrigeration Technique principle.The sealing loam cake that constitutes liquid courage annular seal space in the application of sub-atmospheric pressure scheme is a rigidity, is shaped as plate or goes up convex for example steel helmet or circular tower top, and the mouth of bleeding is installed above.Forms such as bleeding mouth can similar bicycle tyre valve mouth, auto-tire valve, steel ball sealing valve, the permanent closure of also can once bleeding.It is less to inject coolant in the annular seal space, needs only the led light source plate when work, and the cooling fluid power effectively covers it all the time and gets final product.Used cooling liquid preferred water can be mixed methyl alcohol or ethanol, and is not only antifreeze but also reduce vapourizing temperature.With being pumped into negative pressure in the annular seal space, as be initially atmospheric pressure 1/10th through the mouth of bleeding, water base cooling fluid just begins vaporization and carries and wait 5224 times of heats effusions of quantity of fluid to leave for about 50 ℃.Along with vaporizing liquid, negative pressure weakens gradually in the annular seal space, and vapourizing temperature point raises gradually; The steam release heat is taken away rapidly by metal heat sink simultaneously; Steam liquefaction refluxes in led light source plate place, inner bag bottom again after the heat exchange; Circulation replenishes the cooling liquid that vaporization is escaped, and can reach dynamic equilibrium eventually, and realizes ' pincers temperature ' effect: the led light source plate temperature is clamped at specific vapourizing temperature point when work; As long as led light source plate place has remained cooling liquid, its temperature just can not raise again.This programme key principle is ' phase-change energy ': phase transition energy is thousands of times of specific heat of liquid capacity!
A kind of liquid courage wind cylinder type LED lamp is characterized in that: metal heat sink inner bag annular seal space upper end install plate or on convex rigid seal loam cake; Seal an amount of phase transformation cooling fluid of intra-bladder instillation, and annular seal space is pumped into required negative pressure according to the vapourizing temperature parameter.
This scheme must consider to constitute the ability, particularly led light source plate that each parts of annular seal space bear negative pressure; Its area is big; Pressure acts on the front of its most fragile, therefore on light source substrate selection and manufacturing process, must fully prove, and confirms rational technical indicator; If led light source substrate insufficient strength can be assisted to install and strengthened support or liner plate.More directly scheme is: make the negative pressure cooling device according to aforementioned main points earlier, again the led light source plate directly is attached to the refrigeration place and gets final product.
In the technical scheme of negative pressure refrigeration is used; Except water base cooling fluid; Can also choose such as isopentane (27.9 ℃), ether (34.6 ℃), pentane (36.1 ℃), acetone (56.2 ℃), methyl alcohol (64.9 ℃), pentane organic solvents such as (68.9 ℃) making in heptan cooling fluid; Though cost is high, negative pressure requires not harsh, and technology is easy to realize.The material that has is poisonous, and use is noted that and the combination engineering practice efficiently is as the criterion so that safety and environmental protection is cheap that detail is not given unnecessary details at this.
Another innovation of present technique scheme is: the air duct that steering current is installed outside metal heat sink such as heronsbill section bar; Force the planning thermal field to optimize heat dissipation channel; Forcing light fixture periphery cold air to get into air duct along setting path flows; Fully contact efficient heat exchange with heronsbill radiator fins surface, take away the entrained heat of heronsbill aluminium section bar.In fact; Air duct is exactly ' exhausting chimney ' or title ' fire poking barrel '; Utilize metal heat sink to transmit the heat air and make its volumetric expansion, at the inner ascending air that forms of air duct, air-flow produces draft; Form negative pressure in air duct bottom and force ambient air to reserve air gap from shirt rim, air duct bottom to get into air duct continually, walk heat along the heronsbill spreader surface fluxion strap that makes progress again.Air velocity and air duct sectional area are inversely proportional to, and along with air duct top bore tightens up gradually, the expanded by heating air forms the rate of climb of air-flow and accelerates gradually, and kinetic energy increases gradually, and inertia strengthens thereupon, and the exhausting effect is more obvious.The energy that ascending air obtained is finally from the led light source chip, and when chip temperature raise, the ascending air temperature also uprised, and heat energy increases flowing velocity and accelerates, and the heat of taking away just increases, thereby the containment chip temperature further rises; Otherwise when the decline of led chip temperature, ascending air speed is slowed down, and takes away heat and reduces.As a result between led chip temperature and exhausting air velocity, reach dynamic equilibrium very naturally, have typical self adaptation temperature control effect.During outdoor utility, consider factors such as wind and frost sleet dirt acid poison, should do safeguard procedures, comprise that the air outlet place adds a cover rain cover or changes air outlet moulding etc.Precise design and the accurate air duct structure of making can adapt to the LED variable power, and peace and quiet guarantee that for a long time led light source plate operating temperature is within safe range.
Because the ascending air energy is the basic of air-flow inertia and air duct draft, therefore for ensureing ascending air exhausting effect, must reduce its energy deadweight loss, reduces it and dissipates in the air duct self-energy as far as possible.Accomplish this point; Except noting aspect the air duct structural design that air-flow is not produced or few turbulization; One of method installs shape additional at sealing loam cake place such as upwards tighten up outside the convex ' cover confluxes ' gradually at circular pagoda top, when selecting the air duct manufactured materials, must select the big heat-barrier material of thermal resistance; Reduce the air-flow thermal losses, preferred material is plastics.Plastics are easy to machine-shaping, and are with low cost, possess insulation characterisitic simultaneously, also have rich colors concurrently, are beneficial to marketing.For safety, should add fire retardant in the raw material during injection moulding of air duct parts, guaranteeing can breaking out of fire danger.Aspect structural design, also can take addition thereto, as adopting the sandwich effect of heat insulation better.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: sealing loam cake place install that shape such as circular pagoda top upwards tighten up gradually additional on the convex cover that confluxes.
For the air duct exhausting is stronger, radiating effect is better, the exhaust column part that just must increase air duct makes air-flow obtain more kinetic energy and inertia.But long inconvenience packing of air duct and transportation.Solution is: adopts the ring set structure with its cavity ring that is decomposed into the similar truncated conical shape of multistage, encircles in the big ring sleeve, and the little ring of middle ring sleeve, the littler ring of cyclotella sleeve, so the ring ring shrinks and is nested, and reduces packaging volume.Upwards carry from minimum ring during use and form air duct, assembly unit is accomplished in buckle locking layer by layer again, and each encircles the platform tapering and matches, closely nested guarantee to seal air tight.The design reference instance is a kind of plastics traveling glass, gos out and presses ' flat ' when carrying, and upwards one draws ' change ' to become cup during use, and each encircles the platform tapered configuration and guarantees that cup is firmly water-tight.For making nested good whole air duct safety firm, can encircle the nested interface place at each and reserve the snap close position, utilize elasticity of plastics deformation screens to pin no longer positioning.Also can adopt the screw thread turn-knob that the fastening mode is installed.Under the pendent lamp applicable cases, can be installed in air duct upper end minimum ring to suspension hook and put, light fixture gravity just can guarantee that air duct can ' not fall apart ', need not snap close and also can ensure air duct safety, and lifting is simpler.
A kind of liquid courage wind cylinder type LED lamp, it is characterized in that: said air duct is an integral body, and sectional manufacturing, ring ring are nested, integral installation, and the ring set number is N, N >=1, the ring set interface can stay snap close or screw thread spinner.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: said air duct adopts the heat-barrier material manufacturing, and preferred material is engineering plastics; Add fire retardant for well.
In some lighting application scenarios, when being not suitable for installing too high exhausting tube, can mini-fan air blast cooling be installed in that air duct outlet or its are inner.Electric fan increases power consumption, but can ensure led light source plate safe working temperature, and is because selected mini-fan power consumption is very little, tens thousand of hours life-span, not too big to whole light efficiency of LED lighting and influence in service life.
A kind of liquid courage wind cylinder type LED lamp is characterized in that: the mini-fan air blast cooling is installed in the said air duct or its air outlet place.
For the light source irradiation direction is not honest downward application, can adjust led light source plate normal direction, and expansion rigidity conductive sole plate and suitable the distortion so that keep good heat conduction with the led light source plate can change part-structure like this but design principle is constant.
Key point of the present invention and superior point are:
1. liquid cools is one of key point, also is one of superior point
1.1. normal pressure scheme
1.1.1. liquid has, and specific heat capacity is big, being heated is easy to flow behavior, a large amount of heat efficient transfer of portability are given metal heat sink.
1.1.2. liquid directly contacts led light source backboard face, and is best to the led chip cooling-down effect; If the led light source base board adopts ceramic then better effects if.
1.1.3. adopt baby nipple type compliant member, both reduced coolant, reduce the light fixture gross weight, more perfectly solved the sealing risk that thermal (temperature difference) stress causes.The baby nipple type sealing upper cover design of hard and soft combination also has practical value.
1.2. negative pressure scheme
1.2.1. thousands of times of phase-change energies that utilize cooling fluid vaporization are clamped down on the led light source plate and are worked in lower temperature to the principle of specific heat of liquid capacity, guarantee its safe and reliable long-life operation.
1.2.2. use liquid few, in light weight.
1.2.3. applicable to high-power/super-high-power LED lighting.
2. overcoat exhausting tube is one of key point, also is one of superior point
Distribute 2.1. the air duct construction forces has changed the LED lamp interior passage of heat, optimized the cooling blast path, make its with the metal heat sink fin between effective contact-making surface greatly increase, fully improved heat exchanger effectiveness, improved cooling effect.
2.2. the sleeve structure that exhausting tube ring ring shrinks helps and reduces packaging volume and freight, helps reducing overall cost.
2.3. the natural air exhaust structure changes harmful to treasure the LED heat, and has self adaptation exhausting cooling effect, noiseless, and ' strike ' is not safe and reliable, and be with low cost.
2.4. install the application of mini-fan additional, be adapted at installing and using the harsh occasion of space requirement.Advantage is a good cooling results, compact conformation, and shortcoming: increase energy consumption and crash rate, audio-frequency noise is arranged, parameter and type selecting appropriately can reduce defective.
[description of drawings]
The presents attached drawings is not a project blue print, dimensioning not, and the part parts that the scheme of introduction does not relate to omit in the drawings.
Fig. 1 is the side-looking scheme of erection of liquid courage wind cylinder type LED lamp normal pressure scheme of the present invention, has omitted such as parts such as transparent lamp shade, power supply driver and power supply lead wires.Identifier 1 is the led light source substrate among the figure, the 2nd, and heronsbill aluminium alloy heat radiator, the 3rd, flexible carnival hat type sealing loam cake, the 4th, rigid seal packing ring, the 5th, air duct.
Fig. 2 is the side-looking scheme of erection of liquid courage wind cylinder type LED lamp negative pressure scheme of the present invention, has omitted such as parts such as transparent lamp shade, power supply driver and power supply lead wires.Identifier 6 is led light source substrates among the figure, the 7th, and heronsbill aluminium alloy heat radiator, the 8th, rigidity steel helmet type epirelief sealing loam cake, the 9th, air extracting seal valve, the 10th, air duct.
Fig. 3 is a kind of air duct moulding, and air inlet slit, shirt rim, its underpart jag is convenient to injection moulding and is added the releasing process in man-hour, raises the efficiency.
Fig. 4 is the moulding of a kind of flexible sealing loam cake, similar carnival hat, and handle through fillet at the top.
Fig. 5 adopts air duct multistage ring set structure, that nested groups is dressed up, and exhausting tube part is suitably downgraded so that observe among the figure.
Fig. 6 is the lamp affixed to the ceiling that adopts negative pressure liquid phase transformation+air-cooled technology, omits parts such as diffuser, Spring Card, driver, lead.
Fig. 7 Fig. 8 is the perspective, cut-away view of Fig. 6, and icon 11 points to the negative pressure space of led light source substrate back, and the led light source substrate back is that the phase transformation cooling liquid retains the place; The 12nd, heronsbill aluminium section bar radiator; The 13rd, the rigid seal loam cake, similar steel helmet of shape or circular temple top of tower cover negative pressure space; The 14th, seal the mouth place of bleeding; The 15th, air duct.
Fig. 9 Figure 10 is the lamp affixed to the ceiling perspective, cut-away view that adopts normal pressure liquid conductive+air-cooled technology, and icon 16 is led light source plate upper coolant body annular seal spaces; The 17th, nipple type flexible sealing loam cake; The 18th, the rigidity cover that confluxes is used to improve the thermal current characteristic.
Figure 11 is the great power LED factories and miness pendent lamp that adopts negative pressure liquid phase transformation cooling+natural air exhaust cooling technology, and brightness is high energy-conservation obvious.
[specific embodiment]
Embodiment one, with the 15W track LED lamp of miniature electric fan air blast cooling
Present embodiment 20W track LED lamp core structure is as shown in Figure 1.The inner bag annular seal space is marked with the 2% methanol solvate aqueous solution and is used for cooling.Because installing space often is exposed in the visual line of sight, the light fixture appearance and modeling is required harshness, long exhaust column is used in inconvenience, airduct is short, built-in miniature electric fan technical scheme so select for use.
Embodiment two, negative pressure phase transformation clamp warm exhausting natural cooling type LED lamp affixed to the ceiling
Present embodiment such as Fig. 2, shown in Figure 6, initial negative pressure 10kPa, 2% methanol aqueous solution, heronsbill height 50mm is according to the exhausting tube accessory of LED power consumption selection differing heights, the LED power consumption scope of application: 10～100W.
Embodiment three, the high-power high-altitude of LED pendent lamp
Present embodiment is selected the natural air exhaust scheme for use, is applicable to 100W and above high-power, super-high-power LED light source, particularly integrated led light source plate.The led light source cooling scheme adopt working fluid cooling and two kinds of schemes of negative pressure freezing by change of state can, the former is heavy slightly, latter's cost is high slightly.All quiet reliable.
Claims (10)
1. a liquid courage wind cylinder type LED lamp is characterized in that: perfusion fluid in LED lamp metal heat sink sealing internal bladder cavity, installation chimney draught formula insulation cover---air duct outside metal heat sink.
2. a kind of liquid courage wind cylinder type LED lamp according to claim 1 is characterized in that: said liquid main component preferred water, can mix an amount of antifreezing agent by reducing the setting of condensation point temperature; Other also can be selected for use like methyl alcohol or ethanol.
3. a kind of liquid courage wind cylinder type LED lamp according to claim 1; It is characterized in that: the position is corresponding to sealing mounted LEDs light source board, at the other end of the metal heat sink inner bag annular seal space that is surrounded; With tiling or inserted mode the sealing cover unit is installed; These parts are flexibility, rigidity or hard and soft combination, and component shape is plate or shape such as baby nipple and distortion thereof.
4. a kind of liquid courage wind cylinder type LED lamp according to claim 3 is characterized in that: said sealing cover unit by just, gentle two parts or a few part form: rigid element mainly is used as parts-moulding, and flexible portion is mainly used in absorption stress.
5. a kind of liquid courage wind cylinder type LED lamp according to claim 3 is characterized in that: said sealing loam cake compliant member, its manufactured materials tool elasticity or flexibility can be transparent, first-selected rubber such as EPDM, inferior plastics, nylon, the silica gel etc. of selecting.
6. a kind of liquid courage wind cylinder type LED lamp according to claim 1 is characterized in that: metal heat sink inner bag annular seal space upper end install plate or on convex rigid seal loam cake; Seal an amount of phase transformation cooling fluid of intra-bladder instillation, and annular seal space is pumped into required negative pressure according to the vapourizing temperature parameter.
7. a kind of liquid courage wind cylinder type LED lamp according to claim 1, it is characterized in that: said air duct is an integral body, and sectional manufacturing, ring ring are nested, integral installation, and the ring set number is N, N >=1, the ring set interface can stay snap close or screw thread spinner.
8. a kind of liquid courage wind cylinder type LED lamp according to claim 7 is characterized in that: said air duct adopts the heat-barrier material manufacturing, and preferred material is engineering plastics; Add fire retardant for well.
9. a kind of liquid courage wind cylinder type LED lamp according to claim 1 is characterized in that: the mini-fan air blast cooling is installed in the said air duct or its air outlet place.
10. a kind of liquid courage wind cylinder type LED lamp according to claim 1 is characterized in that: sealing loam cake place install that shape such as circular pagoda top upwards tighten up gradually additional on the convex cover that confluxes.
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| CN2012102473778A CN102818238A (en) | 2012-07-17 | 2012-07-17 | Liquid container wind-cylinder-type LED (light-emitting diode) lamp |
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| CN2012102473778A CN102818238A (en) | 2012-07-17 | 2012-07-17 | Liquid container wind-cylinder-type LED (light-emitting diode) lamp |
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| CN106641794A (en) * | 2016-11-04 | 2017-05-10 | 嘉兴市正大照明有限公司 | Production process of LED lamp |
| CN109469857A (en) * | 2018-11-16 | 2019-03-15 | 陈广焕 | A kind of LED bay light |
| CN110425456A (en) * | 2019-08-01 | 2019-11-08 | 广州市莱帝亚照明股份有限公司 | A kind of high-power heat dissipation type high LED street lamp and its manufacturing method |
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| CN113284708A (en) * | 2021-04-09 | 2021-08-20 | 国网四川省电力公司电力科学研究院 | Power transformer oil heat dissipation system with three-dimensional discrete extended surface |
| CN118391652A (en) * | 2024-06-25 | 2024-07-26 | 湖南省鑫普阳光照明科技有限公司 | Clean type LED flat lamp with explosion-proof function |
| CN118391652B (en) * | 2024-06-25 | 2024-09-03 | 湖南省鑫普阳光照明科技有限公司 | Clean type LED flat lamp with explosion-proof function |
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