LED light emission device with air channel structureTechnical field
The invention belongs to LED field of luminescent technology, and in particular to a kind of LED light emission device with air channel structure.
Background technology
Conventional incandescent energy consumption is high, short life, in today that global resources are in short supply, forbids giving birth to by national governments graduallyProduction, substitute products are electronic energy-saving lamps therewith, although electronic energy-saving lamp improves energy-saving effect, but due to the use of many pollutionsThe heavy metal element of environment, and run counter to the main trend of environmental protection.With LED technology high speed development LED illumination gradually intoFor the only choosing of novel green illumination.LED principle of luminosity, energy-saving and environmental protection level on all be far superior to traditional lighting productionProduct.
One of staple product as LED illumination, LED bulb are truly realized 360 ° of full angles and shine, have it is efficient,No cooling fin, light-weight, shape is similar to traditional incandescent light bulb and is welcome be subject to market.However current LED bulb is mostBig problem is heat dissipation problem, this is also to now result in the reason for LED bulb can not make higher-wattage.In the prior art, LEDThe filament of light bulb is mainly conducted stent and filament by way of heat radiation protection gas heat exchange with radiating, radiating efficiencyLow, heat dissipation effect is poor, influences the working life of LED filament, therefore, how to improve the heat-sinking capability of LED filament be industry urgentlyThe major issue of solution.
The content of the invention
One embodiment of the application provides a kind of LED light emission device with air channel structure, can be in LED enclosure interior shapesInto the thermal convection current of protective gas, so as to cool down LED light-emitting component, the working life of LED light-emitting component is improved, there should be air passage knotThe LED light emission device of structure includes：
It the light-permeable shell of sealing, the LED light-emitting component being arranged in the light-permeable shell and shines member with the LEDThe power transmission part of part connection, interior be full of of the housing have inert protective gas, which is characterized in that are also set up in the housingThere is the diffuser around the LED light-emitting component, the diffuser is provided with return air inlet close to one end of the power transmission part,The one end of the diffuser away from the return air inlet is provided with the first air outlet, and the diffuser is with first air outletOne end be also associated with light transmissive cover, the second air outlet, the opening face of second air outlet are offered in the light transmissive coverProduct is less than the opening area of first air outlet.
In one embodiment, for the light transmissive cover substantially in dome cap-shaped, the light transmissive cover includes one towards described firstThe collection air port of air outlet.
In one embodiment, the opening area in the collection air port of the light transmissive cover is more than or equal to the opening of first air outletArea.
In one embodiment, offer several the second poroid air outlets in the light transmissive cover, it is described several secondAir outlet is around the top for being distributed in the light transmissive cover.
In one embodiment, the open area ratio of second air outlet and first air outlet is 1:8~1:10.
In one embodiment, the open area ratio of second air outlet and first air outlet is 1:8.5~1:9.
In one embodiment, it is fixedly connected between the light transmissive cover and the diffuser by light transmission pillar.
In one embodiment, the LED light-emitting component is either integrally housed in the diffuser, and the diffuser is in straight tubeShape.
In one embodiment, the light-permeable shell includes the opening portion that is passed through for stem, the tail end of the stem with it is describedOpening portion is tightly connected, and the LED light-emitting component is fixedly connected with the stem.
In one embodiment, the LED light-emitting component includes at least one LED filament.
Compared with prior art, the technical solution of the application has the advantages that：
By setting the diffuser around the LED light-emitting component in light-permeable shell, diffuser is passed close to the electric powerOne end of defeated part is provided with return air inlet, and one end away from return air inlet is provided with the first air outlet, and diffuser is with the first outlet airOne end of mouth is also associated with light transmissive cover, and the second air outlet, and the opening area of the second air outlet are offered in the light transmissive coverLess than the opening area of the first air outlet, the protective gas in light-permeable shell by LED light-emitting component heating can be from diffuserOutside air outlet outflow diffuser, and flowed back into after the protective gas relatively low with the temperature outside diffuser progress heat exchange from return air inletIn diffuser, so as to fulfill the cooling to LED light-emitting component；Further, due to the second air outlet opened up in light transmissive coverArea be less than the first air outlet, thus a part from the first air outlet flow out protective gas when by the second air outlet,Can flow-disturbing be generated at the second air outlet due to turbulence effect, so that distance in the protective gas of this part and light-permeable shellThe protective gas of power transmission part farther out generates more fully heat exchange, and further flows back into diffuser by return air inletIt is interior, so as to optimize the cooling-down effect to LED light-emitting component, its working life is improved, and causes higher power LED light emission deviceProduction application become possibility.
Description of the drawings
Fig. 1 is the structure diagram of the LED light emission device with air channel structure in one embodiment of the application；
Fig. 2 is that the flow direction of the LED light emission device internal protection gas with air channel structure in one embodiment of the application is shownIt is intended to.
Specific embodiment
The application is described in detail below with reference to specific embodiment shown in the drawings.But these embodiments are simultaneouslyThe application is not limited, structure that those of ordinary skill in the art are made according to these embodiments, method or functionallyConversion is all contained in the protection domain of the application.
Join Fig. 1, introducing the present invention has a specific embodiment of LED light emission device 100 for air channel structure.In this implementationIn mode, the LED light emission device 100 that should have air channel structure includes light-permeable shell 10, LED light-emitting component 20, power transmission part30th, diffuser 40 and light transmissive cover 60.
10 integral sealing of light-permeable shell is set, and LED light-emitting component 20 is arranged in light-permeable shell 10, specifically, light transmission shellBody 10 includes the opening portion that is passed through for stem 50, and the tail end of the stem 50 and the opening portion, which are tightly connected, (such as passes through welderingConnect, high-temperature molten envelope etc. modes), LED light-emitting component 20 is fixedly connected with stem 50.LED light-emitting component 20 and power transmission part 30Connection, the power transmission part 30 are powered by connecting external power supply to LED light-emitting component 20.In light-permeable shell 10 also be full of have it is lazyProperty protective gas to protect LED light-emitting component 20 not oxidized at high temperature, ensure the steady of 20 physical property of LED light-emitting componentIt is fixed.
Diffuser 40 is set around LED light-emitting component 20, and LED light-emitting component 20 is either integrally housed in the diffuser 40Interior, diffuser 40 is in straight-tube shape, and diffuser 40 is provided with return air inlet 42 close to one end of power transmission part 30, away from the return airOne end of mouth 42 is provided with the first air outlet 41.Light transmissive cover 60, which is connected to diffuser 40, has one end of the first air outlet 41,The second air outlet 61 is further opened in light transmissive cover 60, the opening area of second air outlet 61 is less than opening for the first air outlet 41Open area.
In one embodiment, for light transmissive cover 60 substantially in dome cap-shaped, the light transmissive cover 60 includes one towards the first outlet airThe collection air port of mouth 41, the opening area in the collection air port of light transmissive cover 60 are more than or equal to the opening area of the first air outlet 41.
In one embodiment, several the second poroid air outlets 61 are offered in light transmissive cover 60, this several second go outAir port 61 is around the top for being distributed in light transmissive cover 60.
In one embodiment, the open area ratio of the second air outlet 61 and the first air outlet 41 is 1:8~1:10 preferably, theThe open area ratio of two air outlets 61 and the first air outlet 41 is 1:8.5~1:9.Setting in this way can cause second to go outThe flow-disturbing that turbulence effect at air port 61 generates reaches very big, so that the heat exchange of cold and hot protective gas is more abundant.
In one embodiment, it is fixedly connected between the light transmissive cover 60 and the diffuser 40 by light transmission pillar.
In one embodiment, the LED light-emitting component 20 includes at least one LED filament.
Join Fig. 2, the present invention passes through above-mentioned embodiment, when LED light emission device 100 works, the guarantor in diffuser 40Shield gas can be heated to higher temperature, so as to be flowed out from the first air outlet 41 of diffuser 40 outside diffuser 40.And fromThe protective gas that the temperature of one air outlet 41 outflow is higher can be divided into two parts, and a part is directly relatively low with 40 outer temperature of diffuserProtective gas carry out heat exchange, and flowed back into after temperature reduction in diffuser 40 from the return air inlet 42 of diffuser 40；It is anotherPart then further flows through the second air outlet 61, and so as to form turbulent flow at the second air outlet 61, this can further enhance this portionThe heat exchange effect of the protective gas for dividing temperature higher and protective gas relatively low compared with distal portions temperature in diffuser 40, and thisPart protective gas will be also flowed back into from the return air inlet 42 of diffuser 40 in diffuser 40 after the cooling period, so as to construct LED hairsThe directed flow of protective gas in the light-permeable shell 10 of electro-optical device 100, and when LED light-emitting component 20 works, constantly to itCool down, improve the working life of LED light-emitting component 20, and so that the production of higher power LED light emission device 100 shouldWith becoming possibility.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes oneA independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will sayFor bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art canWith the other embodiment of understanding.
Those listed above it is a series of be described in detail only for the application feasibility embodiment specificallyBright, they are not to limit the protection domain of the application, all equivalent implementations made without departing from the application skill spiritOr change should be included within the protection domain of the application.