CN101634426A - Aluminum alloy section LED lamp shade with built-in duck-beak type liquid sealing cavity - Google Patents
Aluminum alloy section LED lamp shade with built-in duck-beak type liquid sealing cavity Download PDFInfo
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- CN101634426A CN101634426A CN200810068571A CN200810068571A CN101634426A CN 101634426 A CN101634426 A CN 101634426A CN 200810068571 A CN200810068571 A CN 200810068571A CN 200810068571 A CN200810068571 A CN 200810068571A CN 101634426 A CN101634426 A CN 101634426A
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Abstract
The invention discloses an aluminum alloy section LED lamp shade with a built-in duck-beak type liquid sealing cavity. An LED lamp source part is closely pressed on one side of the abdomen of the lamp shade; and a sealing cavity is filled with liquid. The invention adopts a preferred scheme that: the aluminum alloy section LED lamp shade comprises flowing anti-icing fluid filled in the sealing cavity and a plurality of radiating fins distributed on the outer surface. The liquid absorbing the heat of the LED lamp source can freely flow in the sealing cavity and bring the heat of the LED lamp source first to all parts of the sealing cavity and then to an aluminum alloy radiating shell outside the sealing cavity, so that the radiating effect of the LED lamp shade is better than that of the aluminum alloy radiating LED lamp shade without the liquid filling sealing cavity. The invention provides an aluminum alloy section LED lamp shade which has the advantages of simple manufacturing process, low cost, small volume, light weight, good radiating effect and long service life of the LED lamp source, and the LED lamp using the lamp shade can be directly used or used as accessories of other lamps, so that the LED lamp shade can help to popularize the green environment friendly illumination of the LED lamp.
Description
[technical field]
The present invention relates to a kind of aluminum alloy section LED lamp shade that adopts extrusion die technology to make, comprise that a kind of built-in duck-beak type is full of the extrusion die aluminum alloy section LED lamp shade of liquid annular seal space, be specifically related to a kind ofly dispose that the led light source power consumption is higher than 30W to 300W and the led light source extrusion die aluminium alloy extrusions lampshade that need not to take active cooling measure.
[background technology]
The LED illumination is emerging green illumination high-tech industry, and the led light source product has environmental protection, efficient energy-saving characteristics, earns widespread respect.Yet in promoting LED green illumination process, being subjected to various obstructions, is exactly that the led light source heat radiation is difficult to solve from himself one of major obstacles.Industry has proposed various technical schemes, set forth from theoretical side, but in the commodity of reality, the application product that can comprehensively solve heat radiation and relevant issues thereof preferably almost is a phoenix feathers and unicorn horns, be difficult to find, itself or do not reach technical indicator and do not have practical value, or cost is too high, volume is excessive, weight exceeds standard etc. makes the user be difficult to accept, and can't promote.For example, by installing electric fan additional is the led light source forced heat radiation, on radiating effect, reach requirement, but the volume and weight that the extra expense that increases of fan, change design increase, the original superiority of LED light fixture is had a greatly reduced quality, besides drive fan increases power consumption, makes the LED light fixture reorganize and outfit light efficiency and obviously reduces, and realizes that electricity saving and energy saving reaches economical target and becomes empty talk; As a result, the increase of light fixture overall complexity causes the reliability of lamp system to reduce, and in a single day the fan part is out of order, will directly cause LED light fixture global failure.Also have the expert to recommend high-tech ' heat pipe ' technical scheme, to conventional LED illumination applied environment, obtain the heat pipe parts of high efficiency and heat radiation, its cost bears for general user institute difficulty; In case and environmental condition exceeds the tolerance range of ' heat pipe ' parts, its radiating effect will be had a greatly reduced quality and be caused led light source to lose efficacy.
Modal in the market LED heat-dissipation lamp housing lampshade product adopts simple relatively technical scheme, it is generous that it is handsome in appearance, make material except adopting fine copper, fine aluminium and stainless steel, modal still aluminium alloy heat-dissipation lamp housing lampshade, its manufacturing process mainly adopts machining, comprises that other technologies such as casting, forging are in conjunction with realizing.The aluminium alloy LED lamp housing or the lampshade of this routine, manufacturing process is ripe moderate, is convenient to produce in enormous quantities, is applicable to that the following led light source of 20W is supporting, but when light source power consumption when 100W is above even above 30W, its radiating effect is worrying.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of reasonable in design, and manufacturing process is simple, and cost is cheap relatively, and performance satisfies the lampshade that the heat radiation of corresponding power led light source requires, and perhaps is called lamp housing.
For addressing the above problem, the technical scheme that the present invention takes is: a kind of aluminum alloy section LED lamp shade, it is a kind of aluminum alloy section LED lamp shade that adopts extrusion die technology to make, the extrusion die aluminum alloy section LED lamp shade that comprises a kind of built-in falling heat-transfer liquid annular seal space is specifically related to a kind ofly dispose that the led light source power consumption is higher than 30W to 300W and the led light source extrusion die aluminium alloy extrusions lampshade that need not to take active cooling measure.
Compare with other solid matter, metal has reasonable thermal conduction characteristic, for example: gold, silver, copper, aluminium, iron and alloy thereof etc.As radiator, its radiating effect is also relevant with multiple other factors, and the designer wishes that certainly the radiating effect of radiator reaches best.Yet,, just must between its radiating effect and cost, accomplish to optimize the choice overall balance particularly as the supporting heat radiation lampshade of the led light source of high volume applications as the heat radiation lampshade of led light source.Adopting aluminium alloy, both considered the thermal conduction characteristic of material, also consider its raw material and processing cost, be included in and adopt some steel under the possible situation, all is the factor of having taken all factors into consideration heat dispersion and having reduced cost.
Any metal material, no matter its moulding how, all has corresponding thermal resistance, cause temperature along heat source-contacting surface to the thermograde that its far-end successively decreases, that is to say:, reduce gradually away from temperature then gradually near thermal source place temperature height.With the reasonable moulding of suitable metal and be attached to and treat source of heat release, the passage of heat that heat can provide from contact-making surface along metal with fast speeds is to the far-end transmission, and gradually with heat diffusion to peripheral medium, thereby realize heat radiation.But because the thermograde that thermal resistance causes, make the radiating effect of radiator far-end have a greatly reduced quality, because it is very limited and cause radiator distal surface temperature far below heat source temperature effectively to be transmitted to the heat of far-end, this just causes calculating is enough area of dissipations, but be difficult to the temperature of thermal source is lowered: the radiating effect that radiator is described is also bad, and entangling its reason is that thermal resistance reduces the far-end radiating efficiency.Therefore have only the cooling surface area that has fully effectively utilized radiator, no matter far-end still is a near-end can both dispel the heat effectively, can address this problem.
Hot pipe technique utilizes its microchannel that the heat ' directly ' of thermal source is delivered to radiator to comprise far-end everywhere, improved the set thermograde of metal heat sink, make that the temperature of far-end and thermal source are approaching, improved the radiator integral radiating effect greatly just.Yet the structure more complicated of hot pipe technique application product, the price comparison costliness, and its working mechanism has determined that its service life is limited, and environment for use is had relatively high expectations relatively, and the scope of just talking about adaptation is narrow, and real large tracts of land is promoted and is not really simple.
A kind of built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade of the present invention utilizes the reasonable aluminium alloy of thermal conductivity to make LED heat radiation lampshade, and lampshade and air contact-making surface are heat-delivery surface.Key point of the present invention is:
1. the opposite side near the aluminium alloy lampshade wall of led light source installation position is a closed cavity, and perfusion is used to transmit the liquid of heat.Because it is very thin to be close to the aluminium alloy wall that led light source is installed, in cavity one side near light source, its temperature almost equates with the temperature of led light source installed surface, is easy to the heat transmission of led light source is gone over.Liquid in the annular seal space has good flowability, be easy to be heated near the light source place, fluid temperature rising proportion behind the draw heat reduces upwards unsteady, abdicating the space replenishes for not heated liquid, so the liquid in the annular seal space flows gradually in order, carry the heat that led light source sends and be delivered to whole seal chamber, be delivered to each surface of radiator then.This structure has clearly been optimized the thermograde of radiator, improves the integral heat sink effect effectively;
2. the moulding of duck-beak type annular seal space and physical dimension, take into account the effective flowability of heated liquid and the weight of radiator integral: should improve radiating efficiency by good fluidity, volume is little in light weight as far as possible again, and the two can not be laid particular stress on or attach undue importance to one thing to the neglect of the other;
The manufacturing process of LED heat radiation lampshade aluminium alloy part 3. of the present invention, it is the section bar manufacturing process that adopts the punching block extrusion stretching, need not cast and forge, both can reduce machining amount, save energy consumption, but one module multiple usages also: the aluminium alloy extrusions in same cross section, can determine the length of cutting section bar according to the size of led light source caloric value, can also adjust arbitrarily according to actual operating position, length is random, obviously reduces the manufacturing cost of lampshade.
The design of conventional extrusion die aluminium alloy extrusions radiator structure all is ready fin is installed in the back side one side, corresponds in the example of the present invention, is exactly along the parallel and side of protuberance upwards of axis.Design is more reasonable from Utopian angle like this, but many drawbacks are arranged in actual use: compile leaf dust on the lampshade easily, the very strong mordant again birds droppings of adhesive force particularly, these rubbish can seriously influence radiating effect, increase the extra weight of lamp housing simultaneously, even regularly cleaning is also very difficult, its workload is very heavy.Here fin being placed on the both sides, bottom, is because the light of most of occasions is to shine from the top down, so light fixture is fixed in eminence more, and the gas in the surrounding enviroment passes through lamp housing from bottom to top, and the downward radiating effect of lampshade fin is better.
The annular seal space structure Design will be noted overall volume and the weight of overall balance lampshade when paying close attention to the heat transmission effect, will pay close attention to its appearance and modeling simultaneously.The seal cavity that surrounds between extrusion die aluminium alloy extrusions and its two ends plug material and baffle plate will provide the liquid that carries heat free and mobile in an orderly manner passage, so its structure must meet thermodynamics and hydromechanical basic principle.Fig. 4 is the glide path schematic diagram behind the heated liquid of aluminium alloy extrusions longitudinal section, as can be seen, rise along route 5 after the middle and lower part is near the heated liquid at led light source place from the figure, 6 move to periphery to the annular seal space top along route, cover Original Departure Point along the bottom after touching the limit, form closed loop.When reality is used the present invention's ' a kind of extrusion die aluminum alloy section LED lamp shade of built-in falling heat-transfer liquid annular seal space ', its longitudinal axis often forms an angle with level under many circumstances, have influence on heated liquid and produce bigger vertical components of flow, about this point, only make literal explanation, no longer accompanying drawing at this.
In order further to improve the liquid flow effect of carrying heat, can increase some annular seal space spaces along axis at the lampshade top, bump as duckbilled, its longitudinal section moulding schematic diagram such as Fig. 5 are shown in Figure 6, the design of Fig. 5 is risen to heated liquid provides bigger space, and Fig. 6 has also considered to increase the slot of installation component, has also increased the efficiently radiates heat area simultaneously.
The liquid that pours in the annular seal space should have generally that the viscosity lazy flow is good, chemical physical property is stable, fundamental characteristics such as freeze to being difficult for solidifying under lampshade non-corrosiveness, the low temperature.The most frequently used liquid is exactly pure water, and the source is enriched with low cost, and more facultative matter is reliable and stable, and especially at low latitudes, temperature above zero can not freeze all the year round, and the back volumetric expansion that need not to consider to freeze brings the problem of harm; In the higher area of latitude, work the mischief for preventing freezed in winter, should prepare the antifreezing liquid perfusion, for example according to the minimum temperature data, in water, mix an amount of ethanol, be mixed with various criterion anti-icing fluid, effect is fine; Other is aided with other for example measure such as structural design better effects if then.
Finish the light fixture that uses a kind of built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade design, the plug at design and installation section bar two ends is most important, these parts and mounting process are related to performance, cost, volume weight and the artistic aesthetic of final LED light fixture, should especially pay close attention to.The shape-designing of plug, by the most basic seal junction with modify moulding portion two parts and form, wherein the seal junction both can be the solid slab structure for the part of embedding aluminium alloy extrusions, also suitable hollow out is gone into shown in Fig. 9 right side members; Assembling plug key will accomplish that 1. combination does not closely make liquid spill; 2. with the aluminium alloy extrusions material distortion coupling is preferably arranged, guarantee that in length of life non-leakage liquid fits together perfectly; 3. under the possibility situation, configuration can be tackled the buffer unit of Volume Changes, for example block rubber, cavernous body or expandable plastic bag etc., these additives can be dissolved issuable huge stress when the bigger variation of liquid volume, to guarantee the safe in utilization of annular seal space integral body.
In order to simplify technology and cost, can be according to calculating, in annular seal space, during perfusion fluid, reserve segment space and give gas, comprise noncorrosive gases, normal air etc., the benefit of this technology is: method is simple, with low cost, effect is up to standard; Shortcoming is to have sound to hear when rocking light fixture, and gas takes up space and can reduce the contact rate of heat-conducting liquid and annular seal space metallic walls, thereby radiating effect is had certain harmful effect.
[description of drawings]
Fig. 1, Fig. 2, Fig. 3 are the aluminium alloy extrusions structural representations of aluminum alloy section LED lamp shade of the present invention, and wherein Fig. 1 is a stereogram, and Fig. 2 is an aluminium alloy extrusions longitudinal section front view, and Fig. 3 is a right view.Among the figure: the intercalation of led light source plate in slot 4, the 1st, aluminium alloy extrusions, the 2nd, duck-beak type liquid sealed cavity, the 3rd, the slot of lampshade installation component, the member inserting handle that lampshade will be installed inserts slot 3, slides into the assembling that lock-screw behind the tram is finished member.
Fig. 4 is the path schematic diagram that heated liquid flows in the observable duck-beak type liquid seal chamber of Fig. 1 example longitudinal section, the heat that the led light source plate sends sees through the aluminium alloy wall, temperature rising volumetric expansion proportion alleviated after the liquid at close this place absorbed heat, and nature upwards floats along passage 5.This motive power has been arranged, just form the fluid passage shown in 6, and reach dynamic equilibrium gradually, the heat that makes led light source send is delivered to aluminium alloy lamp housing position far away relatively continuously, thereby can give full play to the heat dispersion of aluminium alloy lamp housing integral body, guarantee that the temperature of led light source is controlled in the permission limit.
Fig. 5 is the distortion of Fig. 1 example, has strengthened duck-beak type annular seal space height, raises near led light source Ban Chu space, reduces the resistance of ascending fluid, accelerates the speed that flows.Wherein the left side is an aluminium alloy extrusions longitudinal section front view, and the right is a stereogram.
Fig. 6 also is the distortion of Fig. 1 example, has strengthened the height of annular seal space near led light source Ban Chu space equally, has increased the draw-in groove of both sides simultaneously, provides lamp installation convenient.Wherein the left side is an aluminium alloy extrusions longitudinal section front view, and the right is a stereogram.
Fig. 7 is a 70W high-power LED light source plate schematic diagram, and this light source board can embeddedly be inserted in the slot of aluminium alloy extrusions.
Fig. 8 is embedded into the built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade and the LED road lamp cap schematic diagram prepared with 70W high-power LED light source plate.
Fig. 9 is the blast expansion schematic diagram that the built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade is installed a side plug.
[specific embodiment]
Embodiment one, 70W single head LED street lamp
The 70W single head LED street lamp assemble sequence of present embodiment is as follows:
1 physical dimension according to the built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade is determined the mounting structure size of the led light source plate of 70W power consumption: the thickness of light source board, width, and the position of installing;
2 is to embed the predetermined light source board slot of aluminum alloy section LED lamp shade behind the led light source backboard face coating heat conductive silica gel of 70W with power consumption, and installation in position as shown in Figure 8; Back in place closely contacts to obtain best heat-conducting effect, attention light source board and aluminium alloy section surface with the anchor clamps pressurization: the light source board installation site helps the lifting of radiating effect at the middle part of aluminium alloy extrusions on the lower side;
3 energisings detect whether operate as normal of led light sources, and are normal then the plug of lower end is installed, as shown in Figure 9;
After 4 lower end plugs install and take anti-seep measure, detect sealing effectiveness, just can inject liquid as up to standard;
Carry out the installation of upper end plug after 5 liquid are filled with, liquid make-up reaches standard after finishing, and injects antifreezing agent;
6 finish the encapsulation process of upper end plug;
7 install power supply adaptor, connection power line, and the energising detection, fill in examining report;
8 install the appearance modification parts in case of necessity additional;
9 provide the lamp installation member, or directly member are installed;
10 attached operation instructions and other technical data, packing is dispatched from the factory.
Embodiment two, 150W double end LED street lamp
Two 70W single head LED street lamps are parallel side by side, and direction of illumination suitably opens, and forms the batswing tab distribution curve flux easily.
Remaining linkage editor is with reference to embodiment one.
Three LED street lamps of embodiment three, 230W
Three 70W single head LED street lamps are parallel arranged side by side, and the direction of illumination of both sides suitably opens, and forms broom type distribution curve flux easily, and the road hot spot is banded, improves the uniformity of road lighting, eliminates zebra-stripe.
Remaining linkage editor is with reference to embodiment one.
Embodiment four, 300W single head LED hall pendent lamp, furred ceiling lamp
No matter be to be directly installed on the ceiling at hall top, still be suspended on the space, except illuminating effect, what at first consider is exactly radiating effect.The heat that the led light source of 300W sends surpasses the electric furnace of 200W, has great harm for the led light source plate.Arrange heat dissipation channel properly, problem can be readily solved.
Remaining linkage editor is with reference to embodiment one.
Claims (8)
1, a kind of built-in duck-beak type liquid sealing cavity aluminum alloy section LED lamp shade is characterized in that: comprise built-in duck-beak type liquid annular seal space.
2, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: be full of liquid in the built-in annular seal space.
3, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the section bar shell of making lampshade adopts punching block extrusion stretching technology to make, and its longitudinal size length can be cut manufacturing arbitrarily.
4, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the liquid that pours in the built-in annular seal space is common pure water.
5, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the liquid that pours in the built-in annular seal space comprises the ethanol that mixes proper proportion based on common pure water.
6, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the material of the section bar part of lampshade shell is fine aluminium or aluminium alloy.
7, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the fin on the lampshade shell is towards near the side on ground: when light source shines downwards, fin is also towards installing down.
8, aluminum alloy section LED lamp shade according to claim 1 is characterized in that: the sealing of built-in annular seal space, and by its two ends adaptive plug is installed and is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810068571A CN101634426A (en) | 2008-07-22 | 2008-07-22 | Aluminum alloy section LED lamp shade with built-in duck-beak type liquid sealing cavity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810068571A CN101634426A (en) | 2008-07-22 | 2008-07-22 | Aluminum alloy section LED lamp shade with built-in duck-beak type liquid sealing cavity |
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| CN101634426A true CN101634426A (en) | 2010-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197182A (en) * | 2020-09-17 | 2021-01-08 | 广东良友科技有限公司 | Surface-mounted die-bonding high-power LED light source structure and preparation method thereof |
-
2008
- 2008-07-22 CN CN200810068571A patent/CN101634426A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197182A (en) * | 2020-09-17 | 2021-01-08 | 广东良友科技有限公司 | Surface-mounted die-bonding high-power LED light source structure and preparation method thereof |
| CN112197182B (en) * | 2020-09-17 | 2022-08-23 | 广东良友科技有限公司 | SMD solid brilliant high-power LED light source structure |
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