Since MAT and Dutch PHILIPS Co. utility model lamp affixed to the ceiling, lamp affixed to the ceiling gets into huge numbers of families already.It is light source that early stage lamp affixed to the ceiling adopts incandescent lamp bulb, and in order to improve brightness of illumination, it is light source that present lamp affixed to the ceiling adopts fluorescent tube mostly.
Traditional fluorescent tube adopts glass round tube and in pipe, inflates, and pipe itself can have multiple shape, for example glass round tube is bent to annular, and glass tube can be straight tube shape, U type and screw type etc. certainly.Because therefore glass tube low price, and sealing easily are the ideal structures of fluorescent lamp.Yet fluorescent tube itself is mercurous, and light efficiency is low, and light utilization efficiency is also low, does not often reach environmental requirement.Fluorescent lamp institute is luminous in addition contains ultraviolet ray, and human eye and skin are had injury, unhealthy, and generally life-span of fluorescent lamp shorter, only 5000 hours.
In addition, the life-span of fluorescent tube, ballast and the lamp affixed to the ceiling outer cover of existing fluorescent lamp differs bigger, for example the life-span of lamp affixed to the ceiling outer cover very long, often can reach 10 years more than ten years to two, then be 1 year the service life of ballast and fluorescent tube.Ballast in the therefore existing fluorescent lamp and fluorescent tube need often to change, and correspondingly, existing fluorescent lamp also all is a package assembly.This has directly caused fluorescent lamp structure complicated, in disassembly process, damages easily.
The utility model content
The technical problem that the utility model will solve is, to above-mentioned fluorescent lamp short, package assembly complicated problems in service life, a kind of integral LED lighting source is provided.
The technical scheme that the utility model solves the problems of the technologies described above is; A kind of integral LED lighting source is provided; It is characterized in that, comprise drain pan, circuit board, optical lens and driving power, wherein said circuit board is attached on the drain pan and this circuit board is provided with the LED illuminator of a plurality of drain pans dorsad; Said optical lens covers said LED illuminator top and the light of each LED illuminator is carried out the secondary optics luminous intensity distribution, and said driving power is electrically connected to circuit board.
In the described integral LED lighting source of the utility model; Said drain pan comprises first plane and the second recessed plane; Said first plane and second plane are step-like; Said circuit board comprises first circuit board and the second circuit board that is separated; First plane and this first circuit board that wherein said first circuit board is positioned at drain pan are provided with the LED illuminator, and second plane and this second circuit board that said second circuit board is positioned at drain pan are provided with driving power, and said first circuit board is electrically connected with second circuit board.
In the described integral LED lighting source of the utility model, said driving power is fixed between second plane of a side and said second circuit board and drain pan of drain pan dorsad of second circuit board and is provided with silicagel pad.
In the described integral LED lighting source of the utility model, said drain pan is a dish, said second plane of said first planar circular.
In the described integral LED lighting source of the utility model; Said first circuit board is an annular; Said a plurality of LED illuminator is evenly distributed on the first circuit board of said annular and forms one or more annulus, and said first circuit board is attached on the drain pan through heat-conducting layer.
In the described integral LED lighting source of the utility model; Said first circuit board comprises that a plurality of independent veneer and each veneer that are distributed in first plane of drain pan ringwise are electrically connected to said second circuit board respectively; Said a plurality of LED illuminator is located on a plurality of veneers respectively and is formed one or more annulus, and said a plurality of veneers are attached on first plane of drain pan through heat-conducting layer.
In the described integral LED lighting source of the utility model, the beam angle of said optical lens is inversely proportional to the diameter of the circumference of being made up of said LED illuminator.
In the described integral LED lighting source of the utility model; Said optical lens comprises a plurality of lenticular bodies that independently have leg; Said circuit board is provided with a plurality of respectively around the draw-in groove of each LED illuminator, and each said lenticular body is installed on the draw-in groove through leg respectively.
In the described integral LED lighting source of the utility model; Also comprise the loam cake that is fixed to drain pan; Said loam cake covering board and driving power and should on cover the position corresponding and be provided with through hole with optical lens, be provided with silicagel pad between the circuit board at said loam cake and LED illuminator place.
In the described integral LED lighting source of the utility model, the lateral surface on second plane of said drain pan posts the thermal conductive silicon rubber cushion of the double-sided belt viscose that is used to be installed to lamp affixed to the ceiling.
The integral LED lighting source of the utility model, luminous evenly soft through the LED illuminator is made as light source and the luminous intensity distribution through secondary optics, not only realize the economize on electricity illumination, and kept the high light efficiency and the effective lighting rate of LED illumination.
The integral LED lighting source of the utility model not only economizes on electricity and surpasses 50%, and the life-span up to 50000 hours, be 10 times of fluorescent lamp; The light radiation of the more important LED of being does not contain ultraviolet and infrared, is healthy light source; And colour rendering is strong, and illuminating effect is better; Institute is luminous to be continuous spectrum, more comfortable, is particularly suitable for room lighting.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in Fig. 1-4, be the sketch map of the integral LED lighting source embodiment of the utility model.In the present embodiment; The LED lighting source comprises drain pan 11, circuit board 16, optical lens 13 and driving power 17; Wherein circuit board 16 is attached on the drain pan 11 and this circuit board 16 is provided with the LED illuminator 14 of a plurality of drain pans dorsad 11; Optical lens 13 covers the top of LED illuminator 14 and the light of each LED illuminator is carried out secondary light-distribution, and driving power 17 is electrically connected to circuit board 16.Above-mentioned drain pan 11 can be processed through punch forming with the metal material that stainless steel, aluminium alloy etc. has a better heat conductivility.
Above-mentioned LED illuminator 14 can adopt any form or structure (such as the SMD TOP structure of PLCC, the imitative high-power structure of lumen or ceramic substrate compression-molded structures etc.), and is fixed on the circuit board 16 through welding manner.14 caloric values of LED illuminator are transmitted on the drain pan 11 through the extraordinary circuit board 16 of heat conduction, and are radiated the space through the bigger drain pan 11 of area.
Drain pan 11 in the above-mentioned LED lighting source can be tabular, and circuit board 16 and driving power 17 are positioned at the same side of drain pan 11.At this moment, this LED lighting source can be directly installed on ceiling, uses as family or the illumination of other places.
Especially, above-mentioned LED lighting source also can be used for lamp affixed to the ceiling.
In order to raise the position of LED illuminator 14; Make its luminous block (because the volume of driving power is bigger usually) that does not receive middle driving power; Drain pan 11 comprises that first plane 111 and recessed 112, the first planes 111, second plane and second plane 112 are step-like.Correspondingly; Circuit board 16 comprises the first circuit board 161 and second circuit board 162 that is separated; Wherein first circuit board 161 first plane 111 and this first circuit board that are positioned at drain pan 11 is provided with LED illuminator 14; Second plane 112 and this second circuit board 162 that second circuit board 162 is positioned at drain pan 11 are provided with driving power 17, and first circuit board 161 is electrically connected with second circuit board 162.It is (not shown that outer surface (being another surface of second circuit board 162) on second plane 112 posts the thermal conductive silicon rubber cushion of double-sided belt viscose; This silicagel pad possesses good binding function and heat conduction function; The LED lighting source can be bonded on the shell drain pan of lamp affixed to the ceiling through this silicagel pad; Thereby the part heat is dispersed on the drain pan), only need during use to take the wax light paper that hides off, just can be attached to the LED lighting source in the chassis of lamp affixed to the ceiling easily; And, just can switch on and use being connected on prepositioned electric wire underedge the lamp affixed to the ceiling light fixture from 18 li power lines of drawing of waterproof apron.
Certainly, in practical application, drain pan 11 also can be planar shaped, for example driving power 7 is placed the back side of drain pan 11 or adopts highly less driving power etc.
Above-mentioned drain pan 11 can be dish (disc), and first plane 111 is around second plane 112, and promptly second plane 112 is positioned at the central authorities of dish-shaped drain pan 11, first plane be positioned at dish-shaped drain pan 11 around.Correspondingly; First circuit board 161 can be annular; The first circuit board 161 of this annular is attached on first plane 111 of drain pan 11 through heat-conducting layer; A plurality of LED illuminators are evenly distributed on the first circuit board 161 of annular and form one or more annulus (when the diameter of drain pan 11 surpassed 40cm, the LED illuminator was formed two circles or many circles).In addition, first circuit board 161 also can be made up of a plurality of independently veneers (for example arc or square), and a plurality of LED illuminators are located on these a plurality of veneers respectively and are formed one or more annulus.Above-mentioned veneer is uniformly distributed on first plane 111 of drain pan 11 and is attached to the surface on first plane 111 through heat-conducting layer, and each veneer is electrically connected to second circuit board 162 respectively.
Driving power 17 is fixed between second plane 112 of a side and second circuit board 162 and drain pan 11 of drain pan dorsad 11 of second circuit board 162 and is provided with silicagel pad 19, is beneficial to the heat that second circuit board 162 produces is transmitted to drain pan 11, is convenient to heat radiation.
Optical lens 13 can be realized the secondary light-distribution of LED illuminator, and the luminous intensity distribution of secondary optics makes the luminous physical efficiency of LED shine bigger area equably.In practical application; Optical lens 13 can comprise independently a plurality of and have the lenticular body of leg; On circuit board 16, be provided with a plurality of draw-in grooves that center on each LED illuminator 14 respectively, each lenticular body is installed on the draw-in groove through leg respectively, thereby covers LED illuminator 14.Through the change of optical lens 13, can the light intensity spatial distribution of 120 ° of cosine-shaped of LED illuminator 14 itself be become 150 ° of herringbones, as shown in Figure 5.The luminous intensity distribution of the big beam angle of herringbone through optical lens 13 can make that the spatial arrangement of LED illuminator 14 is tightr, can reduce the diameter that LED illuminator 14 is arranged circle, makes corresponding the dwindling of volume of integral LED lighting source.
In addition, the luminous intensity distribution of above-mentioned secondary optics can realize in the process of LED illuminator encapsulation that also promptly LED illuminator 14 adopts the LED that has an optics luminous intensity distribution.
In the above-mentioned LED lighting source; 14 one-tenth casts of LED illuminator are arranged; The dimensional structure of spread length and LED lighting source is relevant with the secondary optics luminous intensity distribution of optical lens 13; The beam angle that is optical lens secondary optics luminous intensity distribution is big more, and then the diameter of this LED illuminator circle is more little, thereby the volume of whole integral LED lighting source is more little.If there is not the secondary optics luminous intensity distribution of optical lens, then the LED illuminator of cast arrangement can't be realized uniform illuminating effect, but presents shadow one by one.
In order to prevent dust and good looking appearance, can in above-mentioned LED lighting source, increase a loam cake 12, this loam cake is fixed to drain pan 11, for example through modes such as screw, buckle or viscose glues.Be provided with through hole with optical lens 13 corresponding positions on these loam cake 12 covering boards 16 and driving power 17 and this loam cake 12, thereby make optical lens 13 expose loam cake 12, be convenient to illumination.For the efficient that guarantees to dispel the heat; Loam cake 12 also can adopt heat conduction preferred metal material to make; And stick with heat conductive silica gel 15 between the first circuit board 161 with this loam cake 12 and LED illuminator 14 places; 14 caloric values of LED illuminator also can be transmitted to loam cake 12 through first circuit board 161 and heat conductive silica gel like this, and are dispersed into the space through loam cake.
In addition, loam cake 12 can be provided with perforate between driving power 17 and second circuit board 162, makes blow-by between loam cake 12 and the drain pan 11, and air can flow, to help heat radiation.And the heat radiation of driving power 17, concrete mode can adopt following dual mode: the one, driving power 17 usefulness heat conduction casting glues are embedded in the drain pan 11, through drain pan 11 heat radiations; The 2nd, open pore in the side of the dome of loam cake 12, allowing air flow is to help heat radiation.
When being used for the lamp affixed to the ceiling use, generally speaking, above-mentioned LED illuminator 14 is selected the LED of 1W power for use, and the quantity of LED illuminator 14 can change as required, for example selects 12.Certainly, also can be according to the size Selection design different capacity of traditional lamp affixed to the ceiling and the LED lighting source of size.Through the computer analog simulation, and accurate calculating, for circular lamp affixed to the ceiling, it is best mode that the LED illuminator is lined up annular, wherein the spacing of LED illuminator is optimum in the 3CM left and right sides.In addition, the size of LED circle that illuminator is lined up should be adjusted according to the outer cover size of lamp affixed to the ceiling, and the diameter of LED circle should be than the little 8-16CM of lamp affixed to the ceiling outer cover diameter.
The LED lighting source of design is installed in the lamp affixed to the ceiling according to the method described above, and luminous evenly (being embodied on the lamp affixed to the ceiling lampshade), and also light utilization efficiency is up to more than 95%.Preferably, can use the scheme of following three kinds of different capacities, as shown in the table:
Above-mentioned integral LED lighting source; Through with the LED illuminator as light source, abandoned the tubular structure of original lamp affixed to the ceiling, and made luminous evenly soft through the luminous intensity distribution of secondary optics; Not only realize the economize on electricity illumination, and kept the high light efficiency and the effective lighting rate of LED illumination.In addition; The utility model makes through particular structural and in very little volume, has guaranteed heat radiation efficiently; Make the sump temperature of integral LED lighting source be lower than 60 ℃; The PN junction temperature of LED illuminator is lower than 75 ℃, thereby the integral LED lighting source life-span was reached more than 50000 hours, is 10 times of fluorescent lamp.The integral LED lighting source of the utility model not only economizes on electricity and surpasses 50%; The light radiation of the more important LED of being does not contain ultraviolet and infrared, is healthy light source; And colour rendering is strong, and illuminating effect is better; Institute is luminous to be continuous spectrum, more comfortable, is particularly suitable for room lighting.
The utility model is combined into one LED illuminator and driving power, makes the LED lighting source have characteristics integrated, that be prone to install, and has both light emitting source, power supply, heat radiation, installation, firm all functions such as structure.
The above; Be merely the preferable specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technical staff who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.