CN203364068U - Solid light source radiator and light source engine - Google Patents
Solid light source radiator and light source engine Download PDFInfo
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- CN203364068U CN203364068U CN2013201931849U CN201320193184U CN203364068U CN 203364068 U CN203364068 U CN 203364068U CN 2013201931849 U CN2013201931849 U CN 2013201931849U CN 201320193184 U CN201320193184 U CN 201320193184U CN 203364068 U CN203364068 U CN 203364068U
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Abstract
With the objective to reduce cost of structural parts and increase heat dissipation performance, the utility model puts forward a solid light source radiator and a light source engine, wherein a. a structure (shell) is served as a cooling fin, namely a metal heat dissipation shell (comprising a front metal shell (4), a rear metal shell (7) and a metal side wall (9)), which is made through punching processing of a metal sheet (an aluminium plate), thus processing cost and material cost are reduced; b. wall thickness of the metal shell is optimized, so the material cost is further reduced; c. the metal side wall (9) is formed through being stretched from the metal sheet of the rear metal shell (7), a ventilation window (8) with a shutter type or staggered structure is opened on the rear metal shell (7) and transparent rate is more than 0.20, so smooth air flow in natural convection is ensured and heat dissipation from the convection is obviously increased; and d. a reflecting cover (26) is provided and most of the light sent out from a solid light source (6) is reflected from the light source engine through the reflecting cover, thus glaring is avoided.
Description
Technical field
The utility model belongs to solid state light emitter heat radiation and lighting technical field, specially refers to the employing Natural Heat Convection, utilizes solid state light emitter radiator and the light source engine of shell mechanism part as fin.
technical background
LED (solid state light emitter), due to energy-conserving and environment-protective, be considered to mankind's illumination light source of future generation, but it is universal to hinder the LED illuminating lamp, and the key obstacle that replaces the traditional lighting lamp is: the cost of LED illuminating lamp is too high.The cost of LED illuminating lamp can be divided into three parts: LED light source, power supply and structural member, structural member includes radiator, and the cost of structural member is mainly from radiator.At present the cost of structural member accounted for the LED illuminating lamp totle drilling cost 1/3rd more than, the cost of LED light source is current prime cost, but decline space is at double arranged, thereby reduces structural member (radiator) cost and will become the emphasis of realizing that LED is universal.
Cause the current high reason of LED structure of the lighting lamp part cost to be: structural design and heat dissipation technology problem, crucial problem is to lack correct " thermal conduction study " principle and heat transfer technology, outstanding behaviours exists: 1, the unclear heat loss through convection that improves is crucial; 2, the basic principle of not understanding heat loss through convection is: near the air (by air heat) of fin surface heat is passed to, air is carrying heat (showing as air themperature raises) and is flowing and leave fin, air stream is larger through the amount stream of fin, the heat of taking away is also larger, thereby guarantee that air stream is when fin, flowing unimpeded is the basic demand of heat loss through convection.
Natural Heat Convection is the optimal selection of LED illuminating lamp.But those skilled in the art does not generally know: drive the mobile power of natural convection air to be: the air intensification of being heated, proportion descends and the buoyancy of generation, buoyancy is vertically upward, and very, thereby guarantee that Air Flow is unimpeded, particularly convection current from bottom to top is unimpeded, most critical in Natural Heat Convection.
Current LED lighting utilizes the shell structure part as fin, but due to the problems referred to above, during product design, do not note or pay special attention to guarantee the unimpeded problem of Air Flow, such as: do not open convection current ventilation window on clamshell, both made to have convection current ventilation window, but opening is abundant not; While not considering the axis setting angle difference of light fixture, can affect the upwards mobile unimpeded problem of free convection.Thereby the heat dispersion of light fixture is poor, the surface of lamp casing does not take full advantage of as radiating surface, needs the fin that increase in addition more, causes the cost of structural material of light fixture not low.
summary of the invention
The utility model be the cost, the raising heat dispersion that reduce structural member be purpose, the radiator of a kind of solid state light emitter (LED illuminating lamp) is proposed.Take full advantage of fitting structure (housing) as fin, can adopt the manufacture of thin-walled aluminium sheet, saved material cost; Utilize Sheet Metal Forming Technology to manufacture housing, efficiency is high, has reduced processing cost; Fully take into account on structural design and guarantee that the free convection Air Flow is unimpeded, not only significantly improved heat dispersion, the cost of fitting structure part is also significantly descended.The utility model has also proposed to reduce the light source engine of dazzle, and in conjunction with radiator of the present utility model, the LED lamp of designing not only dazzle is effectively reduced, and holistic cost is also low.
Solid state light emitter heat sink technology scheme of the present utility model is: the solid state light emitter radiator includes the heat radiating metal shell, the heat radiating metal shell includes metal front and metal back cover and metal sidewall, solid state light emitter generally is furnished with heat-conducting plate or heat conduction core, metal front is provided with metal back cover middle part the transmission of heat by contact face directly or indirectly contacted with heat-conducting plate or the heat conduction core of solid state light emitter, and the surface that the heat partly or entirely produced by solid state light emitter passes to the heat radiating metal shell by this transmission of heat by contact face sheds.Feature of the present utility model has: metal front and metal back cover adopt sheet metal through there being punch process to make, and metal sidewall is to form from the sheet metal stretching of metal back cover; The metal back cover has the ventilation window of louvre type structure or staggered structure, and the cut line of this window has adopted and has been radiation shapes; Metal front has adopted stretching structure backward; The penetrating rate of metal back cover is greater than 0.2; When at least will have in the sidewall first half section of heat radiating metal shell ventilation window or metal front and have ventilation window or metal front and have the ventilation window, the sidewall of heat radiating metal shell at least the first half section also to have the ventilation window.
Transmission of heat by contact face described in the utility model refers to specially as guaranteeing the contact-making surface of conduction heat transfer, thereby this contact-making surface wants enough large, and contact is wanted closely, such as employing compression, interference tight fit, add the measures such as heat-conducting glue or welding.
In the radiator the utility model proposes, the heat that solid state light emitter produces, by direct or indirect transmission of heat by contact, passes to whole heat radiating metal shell, and the housing of structural member directly is used as fin, and the material of structural member must take full advantage of, and has reduced material cost.The heat radiating metal shell adopts sheet metal (preferably aluminium) to adopt punch machining process to make, and raw material is band, adopts the multistep continuous mould, a stroke just can be produced complete parts, efficiency is very high, and processing cost is far below injection moulding, the technique such as aluminum extruded.Adopt punch machining process, the wall thickness of heat radiating metal shell can drop to below 0.3mm, and the wall thickness of injection moulding technique is wanted more than 2mm, and it is just difficult that the wall thickness of aluminum extruded technique is less than 0.5mm, thereby the special employing Sheet Metal Forming Technology proposed of the utility model, material cost further reduces again.Metal sidewall stretches and forms from the metallic plate of metal back cover, i.e. metal sidewall and metal back cover integrative-structure, and manufacture efficiency is high, and cost is low, can guarantee that again heat is transmitted to metal sidewall smoothly.
Open the transom window mouth on the metal back cover, and it is enough large that the penetrating rate of ventilation window is wanted, make as far as possible the free convection Air Flow unimpeded, the enough large penetrating rates of back cover that the utility model proposes are for being greater than 0.2, the effective ventilation area that the penetrating rate of back cover is defined as all ventilation windows on the metal back cover is divided by the metal back cover in the axial projected area of side (also referred to as the desirable breathing area of back cover), and this paper will have detailed definition later.
The metal back cover has enough large ventilation window, and have enough large ventilation window or have enough large ventilation window or have enough large ventilation window at sidewall and the metal front of heat radiating metal shell at metal front on the sidewall of heat radiating metal shell, the free convection mobile air that makes progress can pass in the heat radiating metal shell, is very beneficial for heat loss through convection.Enough large sidewall ventilation window should be that the penetrating rate of sidewall is greater than 0.2, and enough large metal front ventilation window should be that effective ventilation area on metal front is greater than 0.2 with the ratio of back cover ideal area.
The ventilation window adopts louvre type or staggered structure, and the window of can realizing ventilating is processed without waste material, and stock utilization is high, and area of dissipation is also just high, can also improve structural strength; The cut line of the ventilation window on the metal back cover is radiation shapes, is in order to make the heat conduction distance of heat in the metal back cover short as far as possible, to be conducive to reduce thermal conduction resistance.In order to make the heat conduction distance of heat in metal sidewall short as far as possible, the cut line of the louvre type structure had on metal sidewall or the ventilation window of staggered structure adopts the structure along the draw direction of metal sidewall.In order to improve structural strength, between the edge of the edge of metal sidewall or sidewall extension and metal front or fore shell extension, adopted fastening structure.
While through optimizing analysis, drawing the actual design product, the wall thickness δ of heat radiating metal shell is selected as follows:
When 180mm >=D>150mm, get δ<1.25mm;
When 150mm >=D>130mm, get δ<1.1mm;
When 130mm >=D>115mm, get δ<0.95mm;
When 115mm >=D>100mm, get δ<0.85mm;
When 100mm >=D>90mm, get δ<0.8mm;
When 90mm >=D>80mm, get δ<0.75mm;
When 80mm >=D>70mm, get δ<0.7mm;
When 70mm >=D>60mm, get δ<0.65mm;
When D≤60mm, get δ<0.6mm;
Wherein, D means the equivalent diameter of metal sidewall, and δ means the average wall thickness of heat radiating metal shell.
Utilize above-mentioned heat radiating metal shell, the utility model proposes a kind of solid state light emitter engine, include heat radiating metal shell and heat conduction core, and solid state light emitter, the directly and indirectly transmission of heat by contact face between metal front and rear casing and heat conduction core has adopted sleeve or the turnup structure be drawn into.
the accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiments, the utility model is further illustrated:
Fig. 1 is a kind of feature profile schematic diagram of staggered structure ventilation window, and what wherein b was minute otch 3 is wide, and c is the wide of hinge 1b, and e is the wide of hinge 1a.
Fig. 2 is a kind of schematic diagram of feature profile of louvre type structure ventilation window, and wherein f is two minutes spacings between cut line, and b is wide for minute otch 3.
Fig. 3, Fig. 4 are respectively the feature profile schematic diagrames of two kinds of the utility model solid state light emitter engines, show the basic structural feature of the utility model light source radiator: metal sidewall 9 is to form from the sheet metal stretching of metal back cover 7, metal back cover 7 has ventilation window 8, h means the height of the sidewall of heat radiating metal shell, and h/2 means the first half section of the sidewall of heat radiating metal shell.
Fig. 5, Fig. 6, Fig. 7 are respectively three kinds of feature schematic diagrames that are minute otch of Radiation structure.If cut line 13 is not at grade, Fig. 5～7 are interpreted as projection or schematic top plan view.
Fig. 8, Fig. 9, Figure 10 are respectively the feature profile schematic diagrames of three kinds of the utility model solid state light emitter engines.
Figure 11, Figure 12 are respectively the feature structure schematic diagrames of two kinds of sun fancy fin.
Figure 13 is the three-dimensional cutaway view of a kind of the utility model metal back cover and metal sidewall.
Figure 14, Figure 15 are respectively two kinds of the utility model heat radiating metal shell three-dimensional cutaway views.
Figure 16 is a kind of the utility model solid state light emitter engine three-dimensional cutaway view.
Figure 17 to 20 is respectively four kinds of the utility model solid state light emitter engine feature profile schematic diagrames, and these four kinds of light source engines have adopted the technical scheme that reduces dazzle.
Figure 21, Figure 22 are for the sidewall of definite heat radiating metal shell and the schematic diagram of metal back cover and metal front separation.
In figure: 1, 1a, the 1b-hinge, the 2-flow line, 3-divides otch, the 4-metal front, the 5-heat-conducting plate, the 6-solid state light emitter, 7-metal back cover, the 8-window of ventilating, the 9-metal sidewall, the 10-window of ventilating, 11a, 11b, 11c-turns over sheet, the 12-heat conduction core, the 13-cut line, the 14-window of ventilating, the 15-fin, the 16-window of ventilating, the 17-sleeve, the 18-heating column, 19-sidewall extension, 20-fore shell extension, 21-power supply lead wire or plug, reinforcing ring in 22-, the 23-window of ventilating, the 24-transparent lamp shade, the 25-light-distribution lens, the 26-reflection shield, 27-means the dotted line of light, 28-flangikng, 29-wick reflector, the 30-panel, the 31-window of ventilating, 32-wick cover, stiffener after 33-, the 34-flanging bore, 35-illuminator pearl, the 36-prefocus cup, the 37-outer annular-stiffer, 38-outer rim stretching wall, the 39-rear casing, the 40-window of ventilating, the 41-window of ventilating.
the specific embodiment
Fig. 1 shows the feature structure of staggered structure ventilation window, grow and strike out a section hinge 1a and hinge 1b for the continuous metal plate slitting of L, hinge 1a and hinge 1b staggered arrangement, the two ends of the punched hinge 1b gone out also should be connected with the virgin metal plate, must not be cut off, the flow line 2 in figure illustrates air and traverses into another side by minute otch 3 from one side.
Fig. 2 shows the feature structure of louvre type structure ventilation window, length is die-cut into for the continuous metal sheet of L 5 sections hinges 1 that spacing is f, the two ends of hinge 1 also should be connected with the virgin metal plate, must not be cut off, and flow line 2 is expressed air and extended through another side by minute otch 3 from one side.
In the utility model solid state light emitter engine shown in Fig. 3, metal sidewall 9 and metal back cover 7 be structure as a whole (same metallic plate manufacture); Metal front 4 adopts backward (direction of the utility model definition solid state light emitter irradiation is the place ahead, otherwise is rear) stretching structure, can form the light source cover of solid state light emitter 6, and thermolysis is not only arranged, and also can be used for protecting the effects such as solid state light emitter 6 and luminous intensity distribution; Metal front 4 middle parts are provided with the transmission of heat by contact face directly contacted with heat-conducting plate 7, heat transfer between metal back cover 7 and solid state light emitter 6 is conducted heat for mediate contact, and the net quantity of heat that solid state light emitter 6 produces passes to metal front 4 and metal back cover 7 and metal sidewall 9 (being the heat radiating metal shell) surface and sheds; Have louvre type structure ventilation window 8 on metal back cover 7; Have ventilation window 10 on the sidewall of heat radiating metal shell.
The utility model solid state light emitter engine shown in Fig. 4, metal back cover 7 has staggered structure ventilation window 8, and metal sidewall 9 has louvre type structure ventilation window 10.In figure, solid state light emitter 6 is arranged on the front end face of heat conduction core 12, metal front 4 adopts stretching structure backward, metal front 4 and metal back cover 7 middle parts have adopted turnup structure, the flange 11b of metal front 4 and the flange 11a of metal back cover 7 are enclosed within on the cylinder of heat conduction core 12, and the contact-making surface between flange 11a, 11b and heat conduction core 12 is exactly the transmission of heat by contact face.
In Fig. 3 and 4, ventilation window 10 is arranged on the first half section of the sidewall of heat radiating metal shell, and the ventilation window 10 in Fig. 3 is that the gap between metal sidewall 9 and metal front 4 forms, and the ventilation window 10 in Fig. 4 is opened on metal sidewall 9, is positioned at the first half section.At least to have louver(-vre) 10 in the first half section of the sidewall of heat radiating metal shell, make when light source engine is erect up and down, the Natural Heat Convection air can enter in shell from the first half section ventilation window 10 of sidewall, upwards the ventilation window from metal back cover 78 is discharged again, as shown in the flow line 2 in figure, the heat radiation cross-ventilation is unimpeded, and the surfaces externally and internally of the whole heat radiating metal shell of can effectively flowing through, be conducive to heat loss through convection.
For the conduction heat transfer in the metal back cover that is conducive to have louvre type or staggered structure ventilation window, the cut line that forms louvre type and staggered structure ventilation window should adopt the structure that is radiation shapes, Fig. 5,6,7 shows respectively three kinds of cut line 13 that are radiation shapes, cut line 13 in Fig. 5 is camber line, and the cut line 13 in Fig. 6 and Fig. 7 is straight line.
In the utility model solid state light emitter engine shown in Fig. 8, the length of the louvre type ventilation window 9 of opening on metal sidewall 9 is almost the whole height (from different shown in Fig. 4) of metal sidewall 9, the sidewall first half section and the second half section that mean the heat radiating metal shell all have the ventilation window, metal back cover 7 middle parts stretch forward, and have a louvre type structure ventilation window 14 on the stretching wall, when the light source engine level is horizontal, the Natural Heat Convection air also can run through the heat radiating metal shell, and the surfaces externally and internally of whole heat radiating metal shell is fully utilized in heat radiation.While guaranteeing that level is horizontal, convection current is unimpeded, and the penetrating rate of sidewall should be greater than 0.2.Metal front 4 adopts stretching structure backward, in the heat radiating metal shell, forms toroidal cavity is arranged, and in toroidal cavity in the drawings, (being in the heat radiating metal shell) is provided with fin, and fin 15 adopts lamination.The feature of lamination fin is: the middle part of fin 15 (rib root place) tightly stacks, between contact-making surface be exactly the transmission of heat by contact face.
In the utility model solid state light emitter engine shown in Fig. 9, metal back cover 7 has adopted stretching structure forward, and on the stretching wall, have the ventilation window 14, metal front 4 stretches backward on wall and also has ventilation window 16, ventilation window 14 in figure and 16 is the louvre type structure, also can adopt the staggered structure.The cut line of ventilation window on the stretching wall 16 and ventilation window 14 should adopt draw direction (being also the axis direction of the heat radiating metal shell) structure along the stretching wall, purpose be for heat conduction smooth.The surrounding shell wall of heat radiating metal shell all has the ventilation window, and no matter level is horizontal for the heat radiating metal shell, still erects up and down, and the free convection mobile air that makes progress can successfully pass the heat radiating metal shell, and this is conducive to heat loss through convection.Have the ventilation window on the sidewall of heat radiating metal shell, the effective ventilation area sum of the effective ventilation area that metal front also has while ventilating window, sidewall is ventilated window and metal front ventilation window should be greater than 0.2 with the ratio of the desirable breathing area of back cover, while erectting up and down with assurance, convection current is unimpeded.
Also be illustrated in the heat radiating metal shell and be provided with fin in Fig. 9, what this fin adopted is the cover chip architecture, so-called cover chip architecture is exactly that the fin root adopts turnup structure, as shown in FIG., the flange 11c of fin 15 is enclosed within on the flange 11b of metal front, and the heat that imports fin 15 into imports into from this flange 11c.
In the utility model solid state light emitter engine shown in Figure 10, be provided with the sun fancy fin that fin 15 stretches out from the heating column cylinder in the heat radiating metal shell, the middle part of metal back cover 7 adopts tube-in-tube structure, sleeve 17 is that the sheet metal stretching of metal back cover 7 forms, and insert in heat conduction core 12, the contact-making surface between sleeve 21 and heat conduction core 12 is exactly the transmission of heat by contact face.Metal front also can adopt the transmission of heat by contact between the simple structure realization of cover and heat conduction core.
The identical feature of tube-in-tube structure and turnup structure is: the transmission of heat by contact face is the face of cylinder of stretch forming, and difference is: tube-in-tube structure can be blind hole, and sleeve 17 as shown in figure 10, and turnup structure must be opening.
Shown in Figure 10, metal front 4 stretches backward on wall and has louvre type structure ventilation window 16, but do not open the transom window mouth on the sidewall of heat radiating metal shell, thereby this solid state light emitter engine is not suitable for the horizontal situation of axis horizontal, and it is enough large that the effective ventilation area of ventilation window 16 is wanted, with the ratio of the desirable breathing area of back cover, should be greater than 0.2.
Figure 11,12 shows respectively two kinds of sun fancy fin, and fin 15 stretches out from the cylinder of heating column 18; The heating column 18 of the sun fancy fin shown in Figure 11 is solid construction, and the heating column 18 in Figure 12 is hollow-core construction; Fin 15 and heating column 18 in Figure 12 are structure as a whole, and can adopt aluminum extruded technique manufacture, and, in Figure 11, fin 15 are embedded on heating column 18.
In order to improve the structural strength of heat radiating metal shell, the edge of metal sidewall or sidewall extension should adopt fastening structure respectively and between the edge of metal front or fore shell extension, this is fastenedly connected and can adopts welding or stickup or snap fastener connection or the connection of interference close-fitting or peripheral hardware annex compression or clamp connection, this is fastenedly connected not only to play and improves the structural strength effect, also conduction of heat should be arranged, heat can be transmitted to metal sidewall from metal front effectively, improve thermolysis, thereby contact area wants enough large.Shown in Fig. 8, the structure that is fastenedly connected employing interference close-fitting between the edge of the edge of metal sidewall 9 and metal front 4, as shown in local A in figure.So-called interference close-fitting connects and is a bit larger tham the edge internal diameter of metal sidewall 9 with regard to the edge external diameter of metal front 4, by force metal sidewall 9 is enclosed within on metal front 4.Being fastenedly connected between the edge of the metal sidewall 9 shown in Fig. 9 and Figure 10 and metal front 4 adopts the snap fastener syndeton, and as shown in Local C in local A and Figure 10 in Fig. 9, the structure in Figure 10 also can increase interference close-fitting structure.
For the light source engine shown in Fig. 8 and Fig. 9, when axis horizontal is horizontal, free convection make progress mobile air can the gap between fin 15 fin of inleakage, but when axis is erect, the free convection air that makes progress mobile just can not inleakage fin, the whole fin surface of can not effectively flowing through, heat dispersion is by severe exacerbation, thereby also should have the ventilation window of staggered or louvre type structure on the fin 15 in nest plate type and stacked fin, the cut line of this window also should adopt the structure that is radiation shapes (as Fig. 5, 6, shown in 7).
The utility model metal back cover shown in Figure 13 7 and metal sidewall 9, be square-section, can also be ellipse, polygon, triangular-section etc. even.Ventilation window 8 on metal back cover 7 adopts the blind window structure, and cut line is camber line.Shown in figure: the ventilation window 10 on metal sidewall 9 adopts the staggered structure, and the cut line of this window is along the draw direction of metal sidewall, identical with the axis direction of heat radiating metal shell.
In the utility model heat radiating metal shell shown in Figure 14, metal front 4 and metal back cover 7 middle parts have adopted turnup structure, flange 11a and 11b; Between the fore shell extension 20 of metal front 4 and the sidewall extension 19 of metal sidewall 9, adopted the interference close-fitting to be connected and the snap fastener syndeton, as shown in local D in figure, it is C or U-shaped structure that the outer rim of sidewall extension 19 is processed into cross section, and the outer rim of fore shell extension 20 is wrapped in the outer rim of sidewall extension 19.
Figure 15 and Figure 14 are similar, and difference has: in Figure 14, metal sidewall 9 only has the first half section to have louvre type ventilation window 10, and, in Figure 15, metal sidewall 9 front and back sections all have ventilation window 10, and is the staggered structure.Attention: the second half section ventilation window at place is not essential, but must guarantee that the first half section has the ventilation window.
In the utility model solid state light emitter engine shown in Figure 16, it is C shape that the outer rim of sidewall extension 19 is processed into cross section, and be provided with interior reinforcing ring 22 (raising structural strength), as shown in local F in figure, due to the first-selected thin aluminum sheet processing of metal front and rear casing, intensity is low, thereby should select the structure of such reinforced structure intensity.
In Figure 14 and 16, one common feature is arranged, the size of the leading portion of metal sidewall 9 (diameter) is greater than back segment, at leading portion and back segment, excessively locate, form the continuous loop configuration that has cross section to be bending, as scheme as shown in local E, such structure is improved the structural strength effect of metal sidewall, thereby is called the ring stiffener structure of cross section for bending.
The light sent from LED lamp pearl, pharosage is very high, produces glare problem is arranged.The utility model proposes simple in structure, the light fixture light efficiency is high, can effectively solve the technical scheme of glare problem: solid state light emitter is furnished with reflection shield, and the light sent from solid state light emitter has the reflective surface that shines reflection shield over half, then reflects the light source engine from reflection shield.It is enough large that the reflective surface of reflection shield is wanted, and pharosage just can effectively reduce, and glare problem is also just solved.Three kinds of schemes are specifically arranged:
Scheme one, as shown in figure 17, solid state light emitter 6 is single lamp pearls, the place ahead is provided with light-distribution lens 25, the light penetrated from solid state light emitter 6 is after light-distribution lens 25, over half shining on reflection shield 26 arranged, again towards light source engine (reflection shield 26) external reflectance, as shown in the dotted line 27 that means light in figure.Reflection shield 26 in figure is to be stretched and form backward by metal front 4.
Scheme two, as shown in figure 18, be provided with wick reflector 29 in solid state light emitter 6 the place aheads, this wick reflector 29 reflexes to the light sent from solid state light emitter 6 over half on reflection shield 26, then towards light source engine (reflection shield) external reflectance, as shown in the dotted line 27 that means light in figure.Reflection shield 26 in figure is to be stretched and form backward by metal front 4.
Scheme three, as shown in figure 19, be provided with wick cover 32 and wick reflector 29 before solid state light emitter 6, wick cover 32 is provided with towards the sidewall of reflection shield 26, this sidewall has adopted diffusing structure or diffusion material, shine the light on the sidewall of wick cover 32, no matter be directly from solid state light emitter 6, or come through 29 reflections of wick reflector, after diffusing structure or diffusion material on wick cover sidewall, produce diffuse scattering, shine on reflection shield 26, then reflect reflection shield 26, as shown in the dotted line 27 that means light in figure.
In the utility model solid state light emitter engine shown in Figure 20, be provided with wick cover 32, and illuminator pearl 35 is furnished with prefocus cup 36, the effect of prefocus cup 36 is the range of exposures angles that reduce illuminator pearl 35, light is concentrated forward, so just can reduce the size of wick reflector 29, more light is reflexed on reflection shield 26 by wick reflector 29, is conducive to reduce dazzle intensity; The effect of wick cover 32 has the solid state light emitter in protection wick cover 32, and wick reflector 29 devices such as grade, such as preventing dust, the damage of the pernicious gases such as moisture.
In Figure 17, be provided with nest plate type fin 15 in the heat radiating metal shell, the flange of fin 15 directly is enclosed within on heat conduction core 12, has louvre type ventilation window 23 on fin 15 limits; Being fastenedly connected between metal front 4 and metal sidewall 9 adopts the snap fastener syndeton, as shown in local G in figure, similar with Figure 15, but the metal sidewall edge is wrapped in the edge of metal front, and is provided with transparent lamp shade 24.
In Figure 18, the outer rim border of the fin 15 in the heat radiating metal shell has adopted turnup structure, and the flangikng 28 of formation has not only improved the mechanical strength of fin 15, with the inwall of metal sidewall 9, contacts, and has strengthened again the mechanical strength of metal sidewall 9.Shown in figure, do not offer the ventilation window with flangikng 28 touching positions on metal sidewall 9, between flangikng 28 and metal sidewall 9, contact-making surface just can become the transmission of heat by contact face, such structure, be conducive to improve heat dispersion, the machine sunykatuib analysis can obtain the heat radiation raising that can have 10% more than as calculated.Fin 13 shown in figure is the cover chip architecture, and the flangikng structure is equally applicable to the lamination fin.Also illustrate in figure and be provided with panel 30, be generally decoration function, as the panel on present Down lamp, being fastenedly connected between the edge of the edge of metal sidewall 9 and metal front 4 adopts peripheral hardware annex compact connecting structure, the peripheral hardware annex is just on panel 30, as shown in local H in figure.
In the utility model solid state light emitter engine shown in Figure 19, metal front 4 stretches backward, forms with cavity, and the solid state light emitter 6 of being furnished with reflection shield 26 just can be arranged in this cavity, can make whole light source engine compact clean and tidy.Reflection shield 26 in figure has adopted turnup structure, forms the transmission of heat by contact face between reflection shield 26 and heat conduction core 12 is arranged, and reflection shield 26 is used in again heat radiation, and reflection shield 26 should adopt metal material, preferably adopts aluminium sheet to make.Metal front 4 not only has ventilation window 31, also has ventilation window 16 on the stretching wall, and ventilation window 31 should adopt louvre type or staggered structure, and the cut line of window should be radiation shapes.
Figure 19 also illustrates: be processed with flanging bore 34 on metal back cover 7 metal wooden partitions, this flanging bore 34 can be used for bearing the hole that is connected and fixed use of light source engine and external device, and such as screw, adopting turnup structure is for improving intensity.In figure, also illustrate: panel 30 forms for fore shell extension 20, and sidewall extension 19 extends to panel 30 behind, forms the rear stiffener 33 of panel 30, and panel 30 also can be designed to consist of sidewall extension 19; In figure, local N shows the fastening structure between the edge of the edge of metal front and metal sidewall, should belong to the snap fastener syndeton; In figure, local H illustrates, and it is concave structure that the ring stiffener on metal sidewall 9 has adopted a kind of cross section, in figure, is convex, also can oppositely concave.
In Figure 20, in the back of metal back cover (7), be provided with rear casing 39, rear casing 39 should adopt sheet metal (preferably selecting aluminium sheet) to make through punch process is arranged; The outer rim stretching wall 38 of rear casing 39 is to stretch and make from the sheet metal of rear casing 39, can also open louvre type or staggered ventilation window at the outer rim wall 38 that stretches; Have the ventilation window 40 of louvre type structure (also can adopt the staggered structure) on rear casing 39, the tangent line of this window should be radiation shapes; The rear casing middle part has adopted stretching structure forward, and has the ventilation window 41 of louvre type structure (also can adopt the staggered structure) on this stretching wall, and the cut line of this window should be along draw direction; Rear casing 39 adopts the transmission of heat by contact between turnup structure realization and heat conduction core 12, in figure, is direct contact heat transfer, also can be designed to mediate contact and conduct heat.The purpose of setting up rear casing 39 increases area of dissipation exactly.For guaranteeing that cross-ventilation is unimpeded, louver(-vre) 40 and 41 penetrating rate should be enough large.In figure, also illustrate, being fastenedly connected between sidewall extension 19 and fore shell extension 20 adopted peripheral hardware accessory clamp stressed joint structure, outer annular-stiffer 37 in figure is exactly this peripheral hardware annex, outer annular-stiffer 37 not only plays realizes being fastenedly connected effect by sidewall extension 19 and 20 clampings of fore shell extension, also play the raising structural strength, therefore claim outer annular-stiffer.
Solid state light emitter is arranged on heat conduction core, heat conduction core adopts column structure, the middle part of heat radiating metal shell (metal front, metal back cover) adopts sleeve or turnup structure, this sleeve or flange and heat conduction core are provided with direct or indirect transmission of heat by contact face, such structural advantages has: by adopting the interference tight fit between heat conduction core and sleeve or flanging bore, easily guarantee transmission of heat by contact face close contact, can effectively control the transmission of heat by contact thermal resistance, and manufacture simple, easily realize the mechanical automation assembling, efficiency is high.Shown in Figure 16 to 20, metal front 4 and metal back cover 9 middle part shells adopt turnup structure, and flange directly is enclosed within on heat conduction core 12.Shown in Figure 16 and Figure 18～20, the power lead of solid state light emitter 6 or plug 21, through heat conduction core 12, stretch out backward, and compact conformation is succinct.
In the utility model, the available ventilation area of blind window ventilation window is defined as: with reference to figure 2, the wide b that the available ventilation area of single minute otch equals minute otch 3 is multiplied by the length of minute otch 3, and the available ventilation area sums of all minute otch are exactly the available ventilation area of whole louvre type ventilation window.
In the utility model, the available ventilation area of staggered ventilation window is defined as: with reference to figure 1, when the wide b of minute otch 3 is less than or equal to the wide c of 1/2nd hinge 1b, the available ventilation area that single hinge 1b forms equals the length that 2b is multiplied by minute otch 3, and the available ventilation area sum that all hinge 1b form is exactly the available ventilation area of whole staggered ventilation window; When the wide b of minute otch 3 is greater than the wide c of 1/2nd hinge 1b, if the wide c of page leaf 1b is less than or equal to page wide e of leaf 1a, the available ventilation area that single hinge 1b forms equals the length that c is multiplied by minute otch 3, and the available ventilation area sum that all hinge 1b form is exactly the available ventilation area of whole staggered ventilation window; When if c is greater than e, by hinge 1a, calculate, the available ventilation area of single hinge 1a equals the length that e is multiplied by minute otch 3, and the available ventilation area sum of all hinge 1a is exactly the available ventilation area of whole staggered ventilation window.According to above definition, the penetrating rate maximum theoretical of staggered ventilation window is 0.5, the utility model proposes the penetrating rate of back cover and should reach 0.2, and be 40% of maximum theoretical, illustrate and reach enough large.
The penetrating rate of back cover of the utility model metal back cover is defined as, and the effective ventilation area of all ventilation windows on the metal back cover is the projected area (also referred to as the desirable breathing area of back cover) in axial side divided by the metal back cover.The effective ventilation area of louvre type and staggered ventilation window calculates by above-mentioned [0058] [0059] calculating that defines.The desirable breathing area of back cover (the metal back cover is in axially square projected area) calculates definition: when metal sidewall 9 is connected for circular arc with metal back cover 5, take circular arc tangential line and the axis angle point of contact during as 40 °, as the point of the P in Figure 21, determine the separation of metal sidewall 9 and metal back cover 7, the external diameter that D is the metal back cover, the area (area that heat conduction core or heat-conducting plate are shared) that the desirable breathing area of back cover is deducted diameter d again by the area of diameter D calculates; If metal sidewall 9 and metal back cover 7 are inclined-planes while being connected, as shown in figure 22, if the β angle is greater than 40 °, the area that the desirable breathing area of back cover is deducted diameter d again by the area of diameter D1 calculates; If the β angle is less than or equal to 40 °, the area that the desirable breathing area side of back cover is pressed diameter D2 calculates at the area of deduction diameter d.
The penetrating rate of the utility model sidewall is defined as the available ventilation area of sidewall ventilation window of heat radiating metal shell divided by the area of sidewall, and the available ventilation area of louvre type and staggered ventilation window calculates by the definition of above [0058] [0059] and calculates; The reference area of sidewall: in Figure 21, the external surface area in h is exactly the area of sidewall, and in figure, the Q point means the binding site of sidewall and metal front 4.In Figure 22, when β is greater than 40 °, the external surface area that the area of sidewall is pressed in h1 calculates, and when β is less than or equal to 40 °, the external surface area that the area of sidewall is pressed in h2 calculates.
The theoretical limit of the penetrating rate of louvre type ventilation window is 1.0, but owing to considering heat conduction, wall thickness, the factor such as intensity and processing, the actual penetrating rate that can realize is very low, heat radiating metal shell shown in Figure 13～16, the percent opening of the ventilation window 8 of metal back cover 7 is very high, but the penetrating rate of back cover also only has 0.4 left and right.Through experiment and theory analysis, the difference of the heat dispersion between the penetrating rate 0.2 of back cover and 0.4 can reach 50%, the penetrating rate of back cover can reach one times less than the difference of the heat dispersion between 0.1 and 0.4, and the heat dispersion of the penetrating rate 0.2 of back cover is that 0 (without the ventilation window) improved nearly one times than the penetrating rate of back cover.The utility model proposes the penetrating rate of back cover be greater than 0.2 just be based on the experiment and theory analysis.During the actual design product, the penetrating rate minimum of back cover should reach 0.3, because consider from the processing aspect, the penetrating rate of 0.3 back cover easily realizes, heat dispersion is also very high.
On rear casing, the ventilation window opened on nest plate type and stacked fin equally also should be enough large, penetrating rate at least also will reach 0.2, unimpeded to guarantee the heat loss through convection Air Flow, during the actual design product, penetrating rate should reach more than 0.3.The same penetrating rate of sidewall also should be enough large, at least also will reach 0.2, preferably should reach more than 0.3.The definition of the penetrating rate of rear casing, nest plate type and stacked fin is consistent with the penetrating rate of calculating and back cover.
Adopt Sheet Metal Forming Technology, the processing and manufacturing cost is significantly reduced, the shared ratio of the cost of material of sheet metal just rises to remarkable position, thereby reduction sheet metal consumption, reduce sheet metal thickness, the cost of heat radiating metal shell be can effectively reduce, but the wall thickness of heat radiating metal shell, the factor that exists heat dissipation capacity to reduce reduced.Wall thickness is curved line relation on the impact of heat dissipation capacity, and when wall thickness arrives certain value, wall thickness increases half, and the heat dissipation capacity increase may be less than 5%.Adopt fin efficiency concept commonly used in " thermal conduction study " to analyze the impact of wall thickness on heat dissipation capacity, determine the reasonable value that the heat radiating metal shell wall is thick.
The definition of fin efficiency is: the fin true heat gain value is divided by the heat dissipation capacity during without thermal conduction resistance (being the thermal conductivity factor infinity of fin material) in the hypothesis fin.The parameter obtained according to experiment, the appliance computer numerical simulation analysis, draw when following heat radiating metal shell of the present utility model adopts aluminium the impact of wall thickness on fin efficiency.
The metal sidewall diameter is 180mm, and when wall thickness is 1.0mm, fin efficiency is 64%, and wall thickness is added to 1.2mm has increased by 20%, but fin efficiency has just increased by 5.5%, and wall thickness is added to 1.5mm, has increased by 50%, but fin efficiency has just increased by 12%; The metal sidewall diameter is 150mm, and when wall thickness is 0.8mm, fin efficiency is 68%, and wall thickness is added to 1.0mm, has increased by 25%, but fin efficiency has just increased by 6%, and wall thickness is added to 1.3mm, has increased by 62%, but fin efficiency has just increased by 12%; The metal sidewall diameter is 130mm, and when wall thickness is 0.7mm, fin efficiency is 70%, and wall thickness is added to 0.9mm has increased by 28%, but fin efficiency has just increased by 6.5%, and wall thickness is added to 1.15mm, has increased by 64%, but fin efficiency has just increased by 12.5%; The metal sidewall diameter is 115mm, and when wall thickness is 0.6mm, fin efficiency is 68%, and wall thickness is added to 0.8mm, has increased by 33%, but fin efficiency has just increased by 7%, and wall thickness is added to 1.0mm, has increased by 67%, but fin efficiency has just increased by 13%; The metal sidewall diameter is 100mm, and when wall thickness is 6.0mm, fin efficiency is 74%, and wall thickness is added to 0.8mm has increased by 33%, but fin efficiency has just increased by 5.5%, and wall thickness is added to 1.0mm, has increased by 67%, but fin efficiency has just increased by 9.5%; The metal sidewall diameter is 90mm, and when wall thickness is 0.5mm, fin efficiency is 76%, and wall thickness is added to 0.7mm increases by 40%, but fin efficiency has just increased by 6.5%, and wall thickness is added to 0.9mm, has increased by 80%, but fin efficiency has just increased by 9%; The metal sidewall diameter is 80mm, and when wall thickness is 0.5mm, fin efficiency is 78%, and wall thickness is added to 0.6mm has increased by 40%, but fin efficiency has just increased by 6.5%, and wall thickness is added to 0.8mm, has increased by 60%, but fin efficiency has just increased by 9%; The metal sidewall diameter is 70mm, and when wall thickness is 0.4mm, fin efficiency is 77%, and wall thickness is added to 0.6mm has increased by 50%, but fin efficiency has just increased by 7%, and wall thickness is added to 0.7mm, has increased by 75%, but fin efficiency has just increased by 10%; The metal sidewall diameter is 60mm, and when wall thickness is 0.4mm, fin efficiency is 80%, and wall thickness is added to 0.5mm has increased by 25%, but fin efficiency has just increased by 3.5%, and wall thickness is added to 0.6mm, has increased by 50%, but fin efficiency has just increased by 6.5%.
According to above result, and consider other factors, such as: structural strength, material cost and processing cost ratio, the impact of overall dimensions size, analyze while drawing the actual design product, and the wall thickness of heat radiating metal shell is selected as follows:
D means the diameter of metal sidewall, and δ means the wall thickness of heat radiating metal shell.When 180mm >=D>150mm, get δ≤1.5mm, preferably get δ<1.25mm; When 150mm >=D>130mm, get δ≤1.3mm, preferably get δ<1.1mm; When 130mm >=D>115mm, get δ≤1.15mm, preferably get δ<0.95mm; When 115mm >=D>100mm, get δ≤1.0mm, preferably get δ<0.85mm; When 100mm >=D>90mm, get δ≤0.95mm, preferably get δ<0.8mm; When 90mm >=D>80mm, get δ≤0.9mm, preferably get δ<0.75mm; When 80mm >=D>70mm, get δ≤0.85mm, preferably get δ<0.7mm; When 70mm >=D>60mm, get δ≤0.8mm, preferably get δ<0.65mm; When D≤60mm, get δ≤0.7mm, preferably get δ<0.6mm.
When the diameter of metal sidewall is inhomogeneous, get maximum and minimum mean value (average diameter); When the cross section of metal sidewall is not circular, get the equivalent diameter that area is equal, such as, the metal sidewall cross section is the square that the length of side is E, its equivalent diameter
when wall unevenness is even, get the mean value (average wall thickness) of wall thickness.
Fig. 3,4,9 to 10,17 to 22 is schematic diagram, and the wall thickness of the shell of heat radiating metal shown in figure and the fin of fin 13 are thick should not be actual thickness.
Claims (10)
1. a solid state light emitter radiator, include the heat radiating metal shell, the heat radiating metal shell includes metal front (4) and metal back cover (7) and metal sidewall (9), metal front (4) be provided with the transmission of heat by contact face directly or indirectly contacted with heat-conducting plate (5) or the heat conduction core (12) of solid state light emitter (6) in metal back cover (7), it is characterized in that: metal front (4) and metal back cover (7) adopt sheet metal to be processed into, and metal sidewall (9) is to form from the sheet metal stretching of metal back cover (7); Have the ventilation window (8) of louvre type structure or staggered structure on metal back cover (7), the cut line of this window (13) has adopted and has been the radiation shapes structure; Metal front (4) has adopted stretching structure backward; The penetrating rate of the back cover of metal back cover is greater than 0.2;
extremelyfew sidewall first half section at the heat radiating metal shell have ventilation window (10) or
Metal front (4) have the ventilation window (16) or
On the sidewall of heat radiating metal shell and metal front (4) all have the ventilation window;
When 180mm >=D>150mm, get δ<1.5mm;
When 150mm >=D>130mm, get δ<1.3mm;
When 130mm >=D>115mm, get δ<1.15mm;
When 115mm >=D>100mm, get δ<1.0mm;
When 100mm >=D>90mm, get δ<0.95mm;
When 90mm >=D>80mm, get δ<0.9mm;
When 80mm >=D>70mm, get δ<0.85mm;
When 70mm >=D>60mm, get δ<0.8mm;
When D≤60mm, get δ<0.7mm;
Wherein, D means the equivalent diameter of metal sidewall (9), and δ means the average wall thickness of heat radiating metal shell.
2. solid state light emitter radiator according to claim 1, it is characterized in that: have the ventilation window (10) of louvre type structure or staggered structure on metal sidewall (9), the cut line of this window has adopted the structure along the draw direction of metal sidewall (9); Adopted fastening structure between the edge of the edge of metal sidewall (9) or sidewall extension (19) and metal front (4) or fore shell extension (20).
3. solid state light emitter radiator according to claim 1 and 2 is characterized in that: metal back cover (7) is provided with the hole with flange (34) for being connected and fixed with external device.
4. solid state light emitter radiator according to claim 1 and 2 is characterized in that:
When 180mm >=D>150mm, get δ<1.25mm;
When 150mm >=D>130mm, get δ<1.1mm;
When 130mm >=D>115mm, get δ<0.95mm;
When 115mm >=D>100mm, get δ<0.85mm;
When 100mm >=D>90mm, get δ<0.8mm;
When 90mm >=D>80mm, get δ<0.75mm;
When 80mm >=D>70mm, get δ<0.7mm;
When 70mm >=D>60mm, get δ<0.65mm;
When D≤60mm, get δ<0.6mm;
Wherein, D means the equivalent diameter of metal sidewall (9), and δ means the average wall thickness of heat radiating metal shell.
5. solid state light emitter radiator according to claim 1 and 2, it is characterized in that: metal back cover (7) middle part has adopted stretching structure forward, have the ventilation window (14) of louvre type structure or staggered structure on the stretching wall, the cut line of this window has adopted along the draw direction structure.
6. solid state light emitter radiator according to claim 1 and 2 is characterized in that: be provided with fin in the heat radiating metal shell, fin has adopted heronsbill structure or cover chip architecture or lamination; Have the ventilation window (23) of louvre type structure or staggered structure on the fin (15) of cover chip architecture and lamination, the cut line of this window (13) has adopted and has been the radiation shapes structure.
7. solid state light emitter radiator according to claim 6, it is characterized in that: when the fin in the heat radiating metal shell adopts cover chip architecture or lamination, the outer rim of fin (15) has adopted turnup structure, and flangikng (28) contacts with the inwall of metal sidewall (9).
8. a solid state light emitter engine, include heat radiating metal shell and solid state light emitter (6), solid state light emitter (6) is arranged on heat conduction core (12), the heat radiating metal shell includes metal front (4) and metal back cover (7) and metal sidewall (9), metal front (4) be provided with the transmission of heat by contact face directly or indirectly contacted with heat conduction core (12) in metal back cover (7), it is characterized in that: metal front (4) and metal back cover (7) adopt sheet metal to be processed into, and metal sidewall (9) is to form from the sheet metal stretching of metal back cover (7); Have the ventilation window (8) of louvre type structure or staggered structure on metal back cover (7), the cut line of this window (13) has adopted and has been the radiation shapes structure; Metal front (4) has adopted stretching structure backward; The penetrating rate of the back cover of metal back cover is greater than 0.2; Adopted fastening structure between the edge of the edge of metal sidewall (9) or sidewall extension (19) and metal front (4) or fore shell extension (20); Metal front (4) and metal back cover (7) have adopted sleeve or turnup structure, and this sleeve (17) or flange (11a, 11b) are provided with the direct or indirect transmission of heat by contact face contacted with heat conduction core (12); The power supply lead wire of solid state light emitter or plug (21) are through heat conduction core (12).
9. solid state light emitter engine according to claim 8, it is characterized in that: solid state light emitter (6) is furnished with reflection shield (26);
At the front light-distribution lens (25) that is provided with of solid state light emitter (6), the light sent from solid state light emitter (6), after light-distribution lens (25), has the reflection shield (26) that shines over half upper, then towards the light source engine external reflectance or
Be provided with wick reflector (29) in solid state light emitter (6) the place ahead, it is upper that this wick reflector (29) reflexes to reflection shield (26) by the light sent from solid state light emitter (6) over half, then towards the light source engine external reflectance or
The front wick cover (32) that is provided with of solid state light emitter (6), wick cover (32) is provided with towards the sidewall of reflection shield (26), and this sidewall has adopted diffusing structure or diffusion material.
10. solid state light emitter engine according to claim 8 or claim 9, it is characterized in that: have the ventilation window (10) of louvre type structure or staggered structure on metal sidewall (9), the cut line of this window has adopted the structure along the draw direction of metal sidewall (9); Have the ventilation window (31) of louvre type structure or staggered structure on metal front (4), the cut line of this window (13) has adopted and has been the radiation shapes structure; Metal front (4) stretches backward on wall and has the ventilation window (16) of louvre type structure or staggered structure, and the cut line of this window has adopted along the draw direction structure; In stretching the cavity formed backward, metal front (4) is provided with the reflection shield (26) of solid state light emitter (6), this reflection shield (26) adopts metallic plate to be processed into, and is provided with the transmission of heat by contact face directly or indirectly contacted with heat conduction core (12).
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| CN2013201931849U CN203364068U (en) | 2013-04-03 | 2013-04-03 | Solid light source radiator and light source engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014134977A1 (en) * | 2013-03-04 | 2014-09-12 | Qin Biao | Solid-state light source heat-radiating metal shell and light source engine, and method and mould for manufacturing same |
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| WO2014134977A1 (en) * | 2013-03-04 | 2014-09-12 | Qin Biao | Solid-state light source heat-radiating metal shell and light source engine, and method and mould for manufacturing same |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20180403 |