CN101338888A - Street light fitting with luminous diode heat radiating device - Google Patents
Street light fitting with luminous diode heat radiating device Download PDFInfo
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- CN101338888A CN101338888A CNA2008101157527A CN200810115752A CN101338888A CN 101338888 A CN101338888 A CN 101338888A CN A2008101157527 A CNA2008101157527 A CN A2008101157527A CN 200810115752 A CN200810115752 A CN 200810115752A CN 101338888 A CN101338888 A CN 101338888A
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Abstract
The invention relates to a street lamp which is provided with a LED heat radiator, an outdoor illuminating device applied to streets or public squares. The street lamp comprises a lamp box; an illuminating window is arranged on the lower body of the lamp box; a transparent lamp house is mounted on the illuminating window; the lower box body is connected with an upper box body; an arched framework with a vaulted cross-section is arranged at the lower box body; a plurality of luminescent modules are mounted on the lower surface of the arched framework, and radiating members are mounted on the upper surface of the arched framework. The luminescent LED of the luminescent module is connected with a rapid radiating metal-base printed circuit board in a heat-conducting manner. The invention adopts a rapid radiating metal-base printed circuit board; the structure and material ensure that heat produced during the operation of the LED can be transmitted to the heat radiator rapidly and efficiently. The invention also includes a series of heat radiating members made of solid conducting mediums with sound heat-conducting performance which can transmit the heat directly into outdoor air; and the solid medium can protect the electric apparatus inside the lamp box from being eroded by winds, rains and dusts.
Description
Technical field
The present invention relates to a kind of road lamp that has LED radiating device, it is a kind of lighting device that road or square is carried out outdoor lighting, be a kind of be the lighting device of illuminating source by a plurality of light emitting diode combined, be a kind of light emitting diode to be carried out the efficiently radiates heat road lamp under the prerequisite of waterproof and dustproof.
Background technology
Using light emitting diode will become the main flow of street lighting light source as the illumination light of street lamp, how to solve large-power light-emitting diodes heat dissipation problem in use, is the key of popularizing light emitting diode road lamp.Chinese patent " high-power LED street lamp) " (application number: 200710044400.2, July 31 2007 applying date) a kind of powerful light emitting diode road lamp has been proposed, though this patent has been noticed heat dissipation problem, do not address this problem but have special structure, just simple narration uses fin to dispel the heat.The heat radiation of high power LED road lamp is meant that mainly light emitting diode and circuit board interface temperature will be controlled at below 65 ℃, therefore the heat radiation of high power LED road lamp mainly is to solve how to give heat abstractor with the rapid conduction of heat of light emitting diode and circuit board interface generation, so simply using fin is fast and effectively the heat of light emitting diode and circuit board interface to be passed to fin rapidly.In addition, though can play thermolysis in the exposed air in the open air of fin, do not realize in practical application.Because open-air weather conditions are very complicated, the fin of common making adapts to these complicated conditions.At first be the problem of waterproof, expose like this in air that expose to wind and rain, the problem of insulation is with regard to difficult solution.At southern china, the antiseptic property of bare metal must better could be resisted rainy weather, and this certainly will increase the manufacturing cost of fin.Under the weather conditions of the northern rocky dust storm of China, the dust that fin falls above can block the slit between the fin, and fin can't be dispelled the heat.If one deck shell is added in the fin outside, the still problem of whether effectively dispelling the heat.One of reason that the light emitting diode road lamp that also will prevent dust so should dispel the heat, waterproof is prior art can't be popularized.
Summary of the invention
The objective of the invention is to propose a kind of road lamp that has LED radiating device, the heat that produces when described light fixture is effectively worked large-power light-emitting diodes is dispersed in the light fixture air outside fast, the operating temperature of light emitting diode is stabilized in below 65 ℃, the life-span that guarantees light emitting diode reaches tens thousand of hours, and has the effect of waterproof and dustproof.
The object of the present invention is achieved like this: a kind of road lamp that has LED radiating device, a light fixture box is arranged, on the lower box body of light fixture box illuminating window is set, Transparent lamp shade is installed on the illuminating window, described lower box body is installed a upper cartridge body, it is characterized in that, the arched framework that in the described lower box body cross section to be set be arch, a plurality of light emitting modules are installed on the described arched framework lower surface, on the described arched framework upper surface radiating subassembly are installed; Described light emitting module comprises at least one light emitting diode, and this light emitting diode heat conduction is connected on the quick heat radiating metal base printed circuit board.
The beneficial effect that the present invention produces is: because will guarantee the heat radiation of light emitting diode when work, so the present invention has used the quick heat radiating metal base printed circuit board.The heat that the nano material assurance of the metallic based structures of this quick heat radiating metal base printed circuit board and each layer quick heat radiating is sent light emitting diode at work effectively conducts rapidly gives heat abstractor, guarantee that light emitting diode and circuit board interface temperature are controlled at below 65 ℃, really solved the technical barrier of large-power light-emitting diodes heat radiation.The present invention also by comprising that the radiating subassembly that the splendid solid conduction medium of a series of thermal conductivity is formed directly propagates into heat in the outer air of light fixture, remains on below 65 ℃ the working environment of Light-Emitting Diode, has guaranteed the life-span of Light-Emitting Diode.Comprise that simultaneously these solid conductive heat media of light fixture box also play the effect of electrical installation in the protection light fixture box, make the interior electrical equipment of light fixture box avoid the erosion of wind and rain and dust, guaranteed that light emitting diode can replace existing lighting source in outdoor use.The use of light fixture of the present invention can be played the positive effect of energy-saving and environmental protection.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the shape assumption diagram of the road lamp of the embodiment of the invention one;
Fig. 2 is the inner structure intention of the road lamp of the embodiment of the invention one, is the A-A profile of Fig. 1;
Fig. 3 is the Copper Foil distribution schematic diagram on the circuit board in the road lamp of the embodiment of the invention one;
Fig. 4 is the cross section structure schematic diagram of the embodiment of the invention two described quick heat radiating metal base printed circuit boards;
Fig. 5 is the schematic diagram of the embodiment of the invention five described light emitting diodes orthogonal arrangement on printed circuit board (PCB);
Fig. 6 is the embodiment of the invention six described light emitting diodes staggered schematic diagrames on printed circuit board (PCB);
Fig. 7 is the structure chart of the embodiment of the invention seven described arched frameworks;
The air circulation structure schematic diagram of Fig. 8 embodiment of the invention ten described radiating subassemblies;
The liquid loop structure schematic diagram of Fig. 9 embodiment of the invention 11 described radiating subassemblies.
The specific embodiment
Embodiment one:
Present embodiment is a kind of road lamp that has LED radiating device, the light fixture profile as shown in Figure 1, internal structure is as shown in Figure 2.Present embodiment has a light fixture box, on the lower box body 2 of light fixture box illuminating window 3 is set, and Transparent lamp shade is installed on the illuminating window.Lower box body is installed a upper cartridge body 1, and upper cartridge body and lower box body can link together with hinge, down with a locking device locking, also can tighten together with screw in off position, perhaps uses resilient clip, is stuck.Upper cartridge body and lower box body use heat conductivility good metal material, and for example aluminium alloy, stainless steel, brass or the like can effectively reject heat to outside the box with the heat in the Bedpan.The arched framework 5 that a cross section is set in the lower box body is arch, this arched framework is the center of whole light fixture, all parts all are installed on this arched framework.There are two baffle plate sealings on the both sides of arched framework, and the part that makes baffle plate, arched framework, lower box body that Transparent lamp shade is installed forms the space of a relative closure.The effect that baffle plate is set is on the one hand for attractive in appearance, also other parts of this segment space and light fixture box separated on the other hand, for the heat radiation of other parts of light fixture box provides condition.Arched framework uses heat conductivility good metal material equally.A plurality of light emitting modules 4 are installed on the arched framework lower surface, and these light emitting modules are that the light emitting diode 42 by quick heat radiating metal base printed circuit board 41 and top proper alignment constitutes.Described light emitting module has been installed a light emitting diode at least.This light emitting diode heat conduction is connected on the Copper Foil of quick heat radiating metal base printed circuit board.The arched framework upper surface is installed radiating subassembly 6, and this radiating subassembly can have many kinds of forms, and its main purpose is effective heat radiation.
Because there are well-known problem in incandescent lamp, sodium vapor lamp and mercury lamp, people begin to consider to use other electric light sources to replace incandescent lamp, sodium vapor lamp and the mercury lamp illumination light source as street lamp.In recent years, high light efficiency, long-life LED more and more are subject to people's attention.The life-span of traditional electrical light source has only thousands of hours usually, and average life span was at 6000 to 7000 hours by sodium vapor lamp preferably, and the life-span of light emitting diode is on average all more than 50,000 hours.Particularly technological progress in recent years makes light emitting diode that considerable progress arranged on power, and the power of single light emitting diode develops into several watts level by several milliwatts, and brightness is also brought up to more than 100 lumens by several lumens.The combination of a plurality of large-power light-emitting diodes can be competent at large area lighting.Under the situation of equal lighting requirement, the electric energy that large-power light-emitting diodes consumed other electric light sources is relatively wanted much less.Characteristics in addition of large-power light-emitting diodes are colour temperature height, and colour rendering is good, and near natural daylight, human eye is indefatigability under the illumination of light emitting diode, and this is that any traditional electrical light source is incomparable.But, as other large power, electrically light sources, large-power light-emitting diodes the time also can produce unnecessary heat in work, and large-power light-emitting diodes and circuit board interface temperature must be controlled in the working environment below 65 ℃, otherwise the life-span of light emitting diode will have a greatly reduced quality.The price of light emitting diode itself is higher, but its be several times as much as long-life of other light fixtures strong remedied this defective.Just can not guarantee longevity if can not guarantee the working environment LED lamp that light emitting diode and circuit board interface temperature are controlled at below 65 ℃, just can't compete with other light fixtures.Guarantee light emitting diode and the operating temperature of circuit board interface below 65 ℃, it is very important to dispel the heat.
Present embodiment has adopted a kind of special cooling measure for the above-mentioned reasons.This special cooling measure has two keys.One is light emitting module, and another is a radiating subassembly.
The luminous point of large-power light-emitting diodes is the PN joint of diode, and the PN joint has only several millimeters sizes usually, several watts the energy of in the volume of these several millimeters sizes, concentrating, and its caloric value is considerable relatively.Therefore it is first key that guarantees light emitting diode work that the heat that LED P N is saved this heat point source spreads rapidly.The heat of heat point source can to all the winds spread, the speed that can accelerate to spread by good heat-conducting medium.The described light emitting module of present embodiment is to be made of light emitting diode and a kind of solid dielectric with splendid thermal conductivity of being closely linked with it, uses a kind of well-designed printed circuit board (PCB) that can the rapid diffusion heat.This solid dielectric with splendid thermal conductivity is the quick heat radiating metal base printed circuit board, and the some heat temperature field that LED P N joint can be produced enlarges rapidly.Because this solid dielectric has splendid thermal conductivity, hot source point is less with thermograde on every side during work, uniform heat distribution, and heat can very fast diffusion, reaches the requirement that keeps the light emitting diode operating temperature.Light emitting module is the most important parts of present embodiment, has only the good of light emitting module design, keeps the working environment below 65 ℃ between light emitting diode and the printed circuit board interface, just can reach the requirement that guarantees light emitting diode longevity.The light emitting diode heat conduction that present embodiment uses is connected on the Copper Foil of quick heat radiating printed circuit board (PCB).The Copper Foil of quick heat radiating printed circuit board (PCB) promptly can dispel the heat and also can conduct electricity.The good heat conductivity of copper, Copper Foil are directly to apply on the quick heat radiating printed circuit board (PCB), and the heat that spreads out of from light emitting diode can be by very fast the spreading apart of Copper Foil, and be transmitted to very soon on the quick heat radiating printed circuit board (PCB).In the conducting wire of design quick heat radiating printed circuit board (PCB), present embodiment keeps the Copper Foil of any electric current of a large amount of non-conducting on the quick heat radiating printed circuit board (PCB), as shown in Figure 3.Nonconducting heat conduction Copper Foil 4112 contacts with the direct heat conduction of the mode of face with light emitting diode (part of dotted line square is the wafer of light emitting diode among the figure) among the figure, forms good passage of heat.Two narrower Copper Foils about among the figure are copper-foil conducting electricities 4111, are used to connect the positive and negative polarities of light emitting diode and power supply.Heat enters the broad position of Copper Foil along the direction of arrow as shown in the figure, conducts heat in other structure sheafs of quick heat radiating metal base printed circuit board by these broad positions again.
Though in light emitting module, if these heats can not be distributed, the heat accumulation in the light emitting module is too much with heat diffusion for light emitting module, can influence the service life of light emitting diode equally.How to be dispersed into the heat in the light emitting module in the outer air of light fixture is another key of present embodiment.What present embodiment was taked is a cover radiating subassembly, and this cover radiating subassembly is installed on the arched framework that connects light emitting module, and the heat on the light emitting module is transmitted to upper cartridge body by various media, and upper cartridge body is transmitted to these heats in the open-air air.Light emitting module is the template of straight shape, and the profile of upper cartridge body is perfectly round, attractive in appearance, is difficult for the precipitation dust, will produce the critical component radiating subassembly that effective heat conduction just must be used present embodiment between the two.The described radiating subassembly of present embodiment can adopt a plurality of conducting paths: one is the rigidity fin.The rigidity fin is installed on the arched framework in groups side by side normally approximately perpendicular to the arched framework plane, and many as much as possible contact arched frameworks plane, the bottom of rigidity fin is so that heat conduction is good.Use the rigidity fin that heat is dispersed in the light fixture space that upper cartridge body and arched framework surround, utilize the air transmitted heat in this part space, heat is passed to the inner surface of upper cartridge body.Only using air is far from being enough as the heat-transferring method of medium, so present embodiment has also adopted the heat-conducting method of another approach simultaneously: the flexible heat sink sheet.The flexible heat sink sheet is a kind of wire netting by metal wire knitted.Wire netting is stacked as several layers, the flexible heat sink sheet is vertically mounted on the arched framework as the rigidity fin.The upwardly extending length of flexible heat sink sheet is longer, and when the upper cartridge body lid was tight, the flexible heat sink sheet had produced face with the inner face of upper cartridge body and contacted.Heat can very be transmitted on the upper cartridge body by the flexible heat sink sheet smoothly.Upper cartridge body itself also is to have the heat conduction good metal to make, and its roomy smooth surface is with very fast being dispersed in the open-air air of heat.Present embodiment can also use the method for artificial circulation that rigidity fin and flexible heat sink sheet ambient air are flowed fast, accelerates heat radiation.Perhaps, wherein be full of liquid cooling medium, and use circulating pump that liquid medium is wherein circulated by force, obtain better radiating effect further with carrying out watertight between arched framework and the upper cartridge body.
Embodiment two:
Present embodiment is the improvement of embodiment one described quick heat radiating printed circuit board (PCB).The schematic cross-section of the described quick heat radiating metal base printed circuit board of present embodiment as shown in Figure 4.The described quick heat radiating metal base printed circuit board 41 of present embodiment comprises: having of being connected with light emitting diode 42 heat conduction promptly can the dispel the heat copper foil layer 411 that the Copper Foil that also can conduct electricity forms, the heat absorption nano coating 412 that combines with described copper foil layer, the insulating barrier 413 that combines with described heat absorption nano coating, the metal-based layer 414 as the substrate of printed circuit board (PCB) that combines with described insulating barrier, the heat radiation nano coating 415 that combines with metal-based layer.
The copper foil layer of the described copper foil layer of present embodiment and common printed circuit board (PCB) is basic identical, but except the function with conduction, the described copper foil layer of present embodiment also has the effect of heat radiation.Copper material itself is the good material of a kind of heat conductivility, and light emitting diode is directly installed on this layer copper foil layer in the present embodiment, closely is connected with copper foil layer, forms good thermally conductive pathways, and the heat that light emitting diode produces at first passes on the copper foil layer.Copper foil layer can conduct heat rapidly.It below the copper foil layer heat absorption nano coating.The development of modern nanometer technology can produce inconceivable material of many past.This heat absorption nano coating is actual to be a kind of coating that can fast heat absorption also be conducted to other structure sheafs.This coating can adopt prior art, can buy on market.Below the heat absorption nano coating is insulating barrier, because Copper Foil will conduct electricity, is the approach of connecting LED power source.As quick heat radiating metal base printed circuit board substrate in the present embodiment is metal-based layer, it is a kind of metallic plate that can conduct electricity, rather than general printed circuit board (PCB) uses the epoxy resin fiber plate that can insulate, so must copper foil layer and metal-based layer be kept apart with insulating barrier, to guarantee the unimpeded of circuit.This insulating barrier also must have good heat-conducting.It below insulating barrier metal-based layer.The described metal-based layer of present embodiment is a kind of heat conductivility good metal plate, and metal-based layer is the substrate of printed circuit board (PCB).It is the epoxy resin fiber plate that the substrate of common printed circuit board uses, and this epoxy resin fiber plate is the non-conductor of heat.If use the substrate of epoxy resin fiber plate, be difficult to the heat diffusion that light emitting diode sends at work be come and distribute as the light emitting module printed circuit board (PCB).So present embodiment adopts the substrate of metallic plate as printed circuit board (PCB), adopt the good conductor of this heat of metal can guarantee the heat that light emitting diode produces is conducted rapidly.The described metal-based layer of present embodiment can adopt steel plate, alloy aluminium sheet, copper coin, and other alloy sheets or the like, condition are that heat conductivility is good.It below the metal-based layer heat radiation nanometer layer.This heat radiation nanometer layer is that a kind of heat can the absorption rapidly also is transmitted in the air or the nano coating in other solid dielectrics fast.This heat radiation nanometer layer also can adopt prior art, can buy the coating products of this heat radiation nanometer layer on market.Select the good printed circuit board base board of heat dispersion meticulously and smear the nano heat-conductive layer, make the thermal conductivity of the described printed circuit board (PCB) of present embodiment can reach 29W/m
2K.And the thermal conductivity of common printed circuit board can only reach 15W/m usually
2K increases nearly one times, has guaranteed that effectively light emitting diode is at the working environment below 65 ℃.
Embodiment three:
Present embodiment is the improvement of embodiment two described light emitting modules, the improvement of the metal-based layer of the quick heat radiating metal base printed circuit board on the described light emitting module.What the metal of the metal-based layer of the described quick heat radiating metal base printed circuit board of present embodiment used is with the steel sheet material of iron as main component.
Embodiment four:
Present embodiment is the improvement of embodiment two described light emitting modules, the improvement of the metal-based layer of the quick heat radiating metal base printed circuit board on the described light emitting module.The metal that the metal-based layer of described quick heat radiating metal base printed circuit board uses is an aluminum alloy plate materials.The metal of the metal-based layer of quick heat radiating metal base printed circuit board also can use copper sheet material.Aluminium alloy and copper material all are good Heat Conduction Materials, but price is higher.
Embodiment five:
Present embodiment is the improvement of embodiment two described light emitting modules, the arrangement mode of a plurality of light emitting diodes on the described light emitting module, and the arrangement of the described a plurality of light emitting diodes of present embodiment on the quick heat radiating metal base printed circuit board is the mode of quadrature.The arrangement that is a plurality of light emitting diodes is horizontal flat vertical being arranged on the quick heat radiating metal base printed circuit board, as shown in Figure 5.Such arrangement makes the distance between each light emitting diode equal fully, and is very favourable to the heat radiation of light emitting diode on the quick heat radiating metal base printed circuit board.This arrangement is more suitable than the road lamp of large space to having.
Embodiment six:
Present embodiment is the improvement of embodiment two described light emitting modules, and a plurality of Light-Emitting Diodes on the described light emitting module become vertically staggered being arranged on the quick heat radiating metal base printed circuit board, as shown in Figure 6 of lateral alignment.Such arrangement is dwindled the distance between two row's light emitting diodes, but does not dwindle two distances between the light emitting diode.This arrangement is more suitable to having the limited road lamp in space.
Embodiment seven:
Present embodiment is embodiment five or six improvement, is the improvement of embodiment five or six described arched frameworks, the sectional view of arched framework as shown in Figure 7.A upper plate 51 is arranged on the described arched framework, respectively connect the side plate 53 that 52, two blocks of middle plates of plate in the inclination respectively connect an inclination in the both sides of upper plate, the angle between upper plate and the middle plate is 145 °～155 °; The angle of angle is 115 °～125 ° between upper plate and the side plate.Arrange like this arched framework be for illumination even.The light that light emitting diode sent is similar to shot-light, and directive property is stronger, and the angle of the light beam diffusion that irradiates is less.For this reason, arrange several light emitting modules in the light fixture usually, to external exposure, as shown in FIG., the result who is obtained illuminates a slice area to each module with different angles.
Embodiment eight:
Present embodiment is the improvement of embodiment two, and Fig. 2 is seen in the improvement of embodiment two described radiating subassemblies.Described radiating subassembly comprises the rigidity groups of fins 61 that is made of sheet metal that multi-disc and described arched framework upper surface are vertical substantially, described radiating subassembly also comprises the flexible heat sink sheet group 61 that multi-disc is made of woven wire, described flexible heat sink sheet one end is fixedly mounted on the arched framework, and the other end extends upward with the upper cartridge body inner surface and contacts.
The rigidity groups of fins is made up of the sheet metal of multi-disc and arched framework perpendicular, the root of these sheet metals is connected on the arched framework closely, make the heat on the arched framework can be transmitted on these sheet metals rapidly, the air interior owing to these sheet metals and light fixture contacts, and heat can propagate in the air in space in the light fixture rapidly.Air in the light fixture conducts heat on the upper cartridge body that covers on radiating subassembly.On the other hand, flexible heat sink sheet group also is installed on arched framework.Flexible heat sink sheet group is the metal window screening that uses on some similar and screen windows by metal wire knitted.But the material that weaves flexible heat sink sheet group with not being both of window screening maximum is a heat conductivility good metal material.Thermal conductive network is to be formed by stacking by multiple layer metal silk braid, forms sheet, relative vertical being installed on the arched framework of the flexible heat sink sheet group of sheet with arched framework, and the bottom of flexible heat sink sheet group closely contacts with arched framework, so that heat conduction.The upwardly extending length of flexible heat sink sheet group surpasses the height of rigidity groups of fins, also surpass the height of arched framework to upper cartridge body, (referring to Fig. 2) is because flexible heat sink sheet group is flexible, when upper cartridge body puts down when combining with lower box body, flexible heat sink sheet group is depressed, and the part of elongation contacts a paths that forms heat conduction with the inwall of upper cartridge body.Because flexible heat sink sheet group is solid and is good heat-conducting medium, most heat on the arched framework can be transmitted on the upper cartridge body, effectively distributed the heat that light emitting diode produces.The structure of flexible heat sink sheet group can not influence the circulation of air in the light fixture, better heat-radiation effect.
Embodiment nine:
Present embodiment is the improvement of embodiment eight, is the improvement of the material of embodiment eight described arched frameworks and radiating subassembly.
The rigidity groups of fins of the arched framework of present embodiment and radiating subassembly and flexible heat sink sheet group are used stainless steel material, and perhaps described skeleton and rigidity groups of fins are used stainless steel material or aluminum alloy materials, and flexible heat sink sheet group is used copper product.Perhaps can be used in combination the good material of other heat conductivilitys, key is that heat conduction is good, considers the factor of price simultaneously.
Embodiment ten:
Present embodiment is the improvement of embodiment one, is the improvement of embodiment one described radiating subassembly.For further improving the method that radiating condition present embodiment in the light fixture box has used artificial air circulation, radiating subassembly also comprises heat radiation air admission hole 64 that is arranged on the lower box body front portion and the heat radiation steam vent 63 that is arranged on the lower box body rear portion, as shown in Figure 8.For efficiently radiates heat is arranged on rigidity groups of fins and flexible heat sink sheet group between heat radiation air admission hole and the heat radiation steam vent, for promoting air to be flowing in the heat radiation air admission hole or heat radiation steam vent place is provided with fan 65.For avoiding into water, will dispel the heat air admission hole and heat radiation steam vent all are arranged on the lower box body, at heat radiation air admission hole and heat radiation steam vent air filter are installed preferably, prevent that too much dust from entering in the light fixture.
Embodiment 11:
Present embodiment is the improvement of embodiment six described radiating subassemblies.For further improving the heat radiation in the light fixture box, present embodiment seals between arched framework and upper cartridge body, makes both form the liquid heat dissipation chamber of watertight, and liquid heat dissipation chamber and part lamp stand 7 link together, and uses a pipeline 71 to form circulation canal.In liquid heat dissipation chamber and part lamp stand thereof, be filled with liquid cooling medium 69, for the circulation that promotes liquid cooling medium can also be provided with circulating pump 68, as shown in Figure 9.Circulating pump is got back to cooling medium in the described enclosure space from described liquid heat dissipation chamber propulsive units lamp stand and by cycling through.Because the adding of part lamp stand is arranged, the contact area of cooling medium and extraneous air is increased, cooling effect is more obvious.
Embodiment 12:
Present embodiment is embodiment ten, 11 improvement, is the improvement of radiating subassembly.Present embodiment is provided with temperature sensor 67 in the light fixture box body, sensor is electrically connected with fan or circulating pump by controller 66.Temperature in the accurate effectively control light fixture box is provided with the temperature in the temperature sensor measurement light fixture, opens or close fan or circulating pump by controller, and that controls heat transfer medium flows energy-conserving and environment-protective.Temperature sensor can be installed on the light emitting module, also can be installed on the arched framework, perhaps is installed in the rigidity groups of fins.Or a plurality of sensors are set, and measure the temperature of each point respectively, obtain more accurate control.Sensor can be general temperature sensors such as common thermocouple, or bimetal leaf temperature inductor.Under the not high situation of single-sensor and control accuracy, can not use controller.Under the situation of a plurality of sensors, or require using controller under the control accuracy condition with higher.Controller can use the controller of general discrete component, also can use the controller of large scale integrated circuits such as single-chip microcomputer.
Claims (10)
1. road lamp that has LED radiating device, a light fixture box is arranged, on the lower box body of light fixture box illuminating window is set, Transparent lamp shade is installed on the illuminating window, described lower box body is installed a upper cartridge body, it is characterized in that, the arched framework that in the described lower box body cross section to be set be arch, a plurality of light emitting modules are installed on the described arched framework lower surface, on the described arched framework upper surface radiating subassembly are installed; Described light emitting module comprises at least one light emitting diode, and this light emitting diode heat conduction is connected on the quick heat radiating metal base printed circuit board.
2. road lamp according to claim 1, it is characterized in that described quick heat radiating metal base printed circuit board sets gradually from top to bottom: the copper foil layer that is connected with Light-Emitting Diode heat conduction, the heat absorption nano coating that combines with described copper foil layer, the insulating barrier that combines with described heat absorption nano coating, the metal substrate layer that combines with described insulating barrier, the heat radiation nano coating that combines with metal substrate layer.
3. road lamp according to claim 2 is characterized in that, described metal substrate layer is used steel sheet material.
4. road lamp according to claim 2 is characterized in that, described metal substrate layer is used a kind of in aluminum alloy plate materials, the copper sheet material.
5. road lamp according to claim 2 is characterized in that, the arrangement that is orthogonal on the quick heat radiating metal base printed circuit board of a plurality of Light-Emitting Diodes in the described light emitting module.
6. road lamp according to claim 2 is characterized in that, a plurality of Light-Emitting Diodes in the described light emitting module become staggered arrangement on the quick heat radiating metal base printed circuit board.
7. road lamp according to claim 2, it is characterized in that described arched framework has a upper plate, respectively connect plate in the inclination in the both sides of described upper plate, described two blocks of middle plates respectively connect the side plate of an inclination, and the angle between described upper plate and the middle plate is 145 °～155 °; Angle degree between described upper plate and the side plate is 115 °～125 °.
8. road lamp according to claim 2, it is characterized in that, described radiating subassembly comprises the rigidity groups of fins that is made of sheet metal that multi-disc and described arched framework upper surface are vertical substantially, the bottom of the sheet metal of described rigidity groups of fins is installed on the skeleton, described radiating subassembly also comprises the flexible heat sink sheet group that multi-disc is made of woven wire, described flexible heat sink sheet bottom is installed on the arched framework, and the other end extends upward with the heat conduction of described upper cartridge body inner surface and is connected.
9. road lamp according to claim 8 is characterized in that, the rigidity groups of fins of described arched framework, radiating subassembly and flexible heat sink sheet group are used a kind of in stainless steel material, aluminum alloy materials, the copper material.
10. road lamp according to claim 8, it is characterized in that, described radiating subassembly also comprises the heat radiation air admission hole that is arranged on the lower box body front portion and is arranged on the heat radiation steam vent at lower box body rear portion, described rigidity groups of fins and flexible heat sink sheet group are arranged between heat radiation air admission hole and the heat radiation steam vent, are provided with the fan that promotes that air flows at described heat radiation air admission hole or heat radiation steam vent place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101157527A CN101338888A (en) | 2008-06-27 | 2008-06-27 | Street light fitting with luminous diode heat radiating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101157527A CN101338888A (en) | 2008-06-27 | 2008-06-27 | Street light fitting with luminous diode heat radiating device |
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| CN101338888A true CN101338888A (en) | 2009-01-07 |
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| CNA2008101157527A Pending CN101338888A (en) | 2008-06-27 | 2008-06-27 | Street light fitting with luminous diode heat radiating device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865544A (en) * | 2012-08-31 | 2013-01-09 | 无锡莱吉特信息科技有限公司 | Road lamp |
| CN102889566A (en) * | 2011-07-19 | 2013-01-23 | 宁波福民照明科技有限公司 | Cooling and thermal protection device of light-emitting diode (LED) lamp |
| CN105465736A (en) * | 2016-01-29 | 2016-04-06 | 湖州巨力铝型材有限公司 | Cooling street lamp cover |
| CN105953194A (en) * | 2016-06-22 | 2016-09-21 | 东莞市闻誉实业有限公司 | LED heat-dissipation illuminating device |
| CN106051647A (en) * | 2016-06-22 | 2016-10-26 | 东莞市闻誉实业有限公司 | Lamp |
| CN108603655A (en) * | 2015-12-28 | 2018-09-28 | 伊顿智能动力有限公司 | LED light device with single pressure cavities |
| CN111578243A (en) * | 2020-06-11 | 2020-08-25 | 海宁市天翼龙电器有限公司 | LED street lamp heat dissipation device with multistage heat dissipation function |
| WO2022120704A1 (en) * | 2020-12-10 | 2022-06-16 | 深圳市艾比森光电股份有限公司 | Printed circuit board, led display module, and led display screen |
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2008
- 2008-06-27 CN CNA2008101157527A patent/CN101338888A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889566A (en) * | 2011-07-19 | 2013-01-23 | 宁波福民照明科技有限公司 | Cooling and thermal protection device of light-emitting diode (LED) lamp |
| CN102865544A (en) * | 2012-08-31 | 2013-01-09 | 无锡莱吉特信息科技有限公司 | Road lamp |
| CN108603655A (en) * | 2015-12-28 | 2018-09-28 | 伊顿智能动力有限公司 | LED light device with single pressure cavities |
| US10502400B2 (en) | 2015-12-28 | 2019-12-10 | Eaton Intelligent Power Limited | LED illumination device with single pressure cavity |
| CN108603655B (en) * | 2015-12-28 | 2021-01-05 | 昕诺飞控股有限公司 | LED lighting device with single pressure cavity |
| CN105465736A (en) * | 2016-01-29 | 2016-04-06 | 湖州巨力铝型材有限公司 | Cooling street lamp cover |
| CN105953194A (en) * | 2016-06-22 | 2016-09-21 | 东莞市闻誉实业有限公司 | LED heat-dissipation illuminating device |
| CN106051647A (en) * | 2016-06-22 | 2016-10-26 | 东莞市闻誉实业有限公司 | Lamp |
| CN111578243A (en) * | 2020-06-11 | 2020-08-25 | 海宁市天翼龙电器有限公司 | LED street lamp heat dissipation device with multistage heat dissipation function |
| CN111578243B (en) * | 2020-06-11 | 2022-01-04 | 海宁市天翼龙电器有限公司 | LED street lamp heat dissipation device with multistage heat dissipation function |
| WO2022120704A1 (en) * | 2020-12-10 | 2022-06-16 | 深圳市艾比森光电股份有限公司 | Printed circuit board, led display module, and led display screen |
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Open date: 20090107 |