A kind of LED down
The present invention relates to a kind of Down lamp, particularly relate to a kind of light reflection structure and radiator structure of LED down.
LED down be a kind of be embedded into light in ceiling vertical under the lighting penetrated.LED down does not occupy the interior space, in indoor location LED down, because the confidentiality of light fixture, the sensation producing compressing can not be used, and warm effect can be produced, but LED down beam angle of the prior art belongs to optically focused, and light is more concentrated, and comparison of light and shade is too strong, range of exposures is limited, therefore, general family or office space just need to install many Down lamps, to increase field of illumination.In addition, when the principle of luminosity of LED result also in human eye direct view led lamp pearl, can feel dazzling, nature.In addition, a large amount of heat can be produced while LED lamp bead luminescence, as in time these heats not given out cylindrical shell rapidly, the light rapid decay causing LED lamp bead to send, energy consumption increase by the heat be deposited in around LED lamp bead and in cylindrical shell, thus affect stability and the service life of LED lamp bead, the radiating fin of radiator of the prior art is only arrange around radiator body, and the hot-air between radiating fin is difficult to flowing, and radiating effect is undesirable.
Summary of the invention
The present invention is intended to solve above-mentioned mentioned technical problem, there is provided a kind of can when not increasing LED lamp bead power, strengthen Down lamp luminosity, expand illumination zone and make light soft, natural, the radiating effect of radiator can be strengthened again, extend the Down lamp in LED lamp bead service life.
The present invention is realized by following technical scheme:
A kind of high-efficiency LED down lamp, comprise cylindrical shell, LED luminescence component, radiator and reflector, described reflector comprises cup and at the integrated connecting portion of bottom of cup, described connecting portion is open cylindrical shape, wherein be provided with by being threaded into fixing aluminium alloy installing rack, described LED luminescence component is fixed on described aluminium alloy installing rack inside bottom and luminous towards described cup, described aluminium alloy installing rack exterior bottom is provided with described radiator, described radiator is arranged in described cylindrical shell, described cylindrical shell is provided with air vent on the described radiator position of correspondence, heat dissipating silicone grease is coated with between described LED luminescence component and aluminium alloy installing rack, described cup is provided with granular male and fomale(M&F), also reflecting cover is provided with between described LED luminescence component and described cup, light-passing board is provided with between described reflecting cover and described cup, described light-passing board is coated with refraction film, described radiator comprises body and arc radiating fin, described body is the cylinder of hollow, the inner round wall of described body is provided with the screw hole carrying out with cylindrical shell and LED luminescence component being connected, the cylindrical wall of described body is densely covered with the described arc radiating fin of divergent shape, the end of dispersing of described arc radiating fin is provided with recess, described recess is all on sustained height or successively and is elevated gradually, thus the groove formed around described body axle center, described body is also provided with radial passage.
Further, described male and fomale(M&F) is coated with reflective membrane.
Further, described reflecting cover is coated with reflective membrane.
Further, described aluminium alloy installing rack is connected by screw with between radiator or the mode of welding is fixed.
Further, heat dissipating silicone grease is coated with between described aluminium alloy installing rack and radiator.
Further, described aluminium alloy installing rack and radiator one-body molded.
Further, described arc radiating fin and described body are formed in one.
Further, described radiator is fixed in the bottom in described cylindrical shell, is connected with described bottom by screw.
The invention has the beneficial effects as follows:
The light that LED luminescence component sends is through after the refraction film that light-passing board applies, radiation direction deflects, by the granular male and fomale(M&F) that cup is arranged, make light, in reflector, multiple reflections occur, and finally light is irradiated to the neighboring area of Down lamp mouth, be reflected to cup then to penetrate to Down lamp surrounding with the angle close to level close to the light of the position at Down lamp mouth edge, thus increasing the range of exposures of Down lamp, the collimated light beam that LED luminescence component sends becomes after diverging light to make light soft, natural through multiple reflections.Reflecting cover is set and on male and fomale(M&F), reflecting cover, sets up reflective membrane and can highlight, thus can realize using the LED down of lesser amt can irradiate larger scope, be conducive to saving electric energy.
End of dispersing on radiating fin is provided with recess, and all recesses are all on sustained height or be successively elevated, thus the groove formed around radiator outline, when indoor are free air-flow to move, air flows into from the air vent of cylinder lateral wall windward side, portion of air wherein carries out heat exchange along groove and radiating fin, and flows out from the leeward side air vent of cylinder lateral wall; Heat exchange is carried out with radiating fin between another part then enters into radiating fin radiating surface by groove, and along the radiating surface of radiating fin from the air vent outflow tube of cylinder body bottom.Although the body of radiator is the cylinder of hollow, its one end and LED luminescence component Joint, cause this end to be closed, form blind hole in the middle part of cylindrical shell body, hot-air is difficult to discharge, by arranging radial direction through hole on radiator body, air can be flow in body, accelerate heat radiation.In addition, radiating fin is designed to the area of dissipation that arc can increase radiating fin, strengthens the heat-sinking capability of radiator.
Accompanying drawing explanation
Fig. 1 is the generalized section of LED down;
Fig. 2 is the radiator A-A sectional view in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, reflector 1, LED luminescence component 4, radiator 3 is mainly provided with in the cylindrical shell 8 of mounting bracket 7.Reflector 1 comprises cup 11 and connecting portion 12, and cup 11 and connecting portion 12 are formed in one.Connecting portion 12 is in open cylindrical shape, and the mode that connecting portion 12 and aluminium alloy installing rack 2 are threaded connection is connected and fixed.LED luminescence component 4 is fixed by screws in the inside bottom of aluminium alloy installing rack 2 and luminous towards cup 11, and is coated with heat dissipating silicone grease between the two.Radiator 3 is fixed on the exterior bottom of aluminium alloy installing rack 2 by the mode that screw connects, and be coated with heat dissipating silicone grease between the two, the heat that LED luminescence component 4 sends first is delivered to and aluminium alloy installing rack 2 is delivered to radiator 3 again dispels the heat, aluminium alloy installing rack 2 also can be connected with radiator 3 in a welding manner or integrally casting shaping.Cup 11 is horn-like structure, its medial surface is provided with granular male and fomale(M&F) 13, and male and fomale(M&F) 13 makes the light generation diffuse reflection be mapped on it, not only can strengthen the brightness of light, expansion range of exposures can also make light soft.Reflecting cover 5 is also provided with between LED luminescence component 4 and cup 11, light-passing board 6 is provided with between reflecting cover 5 and cup 11, the lower surface of light-passing board 6 is coated with refraction film, refraction film changes the direction of the light that LED luminescence component 4 sends, make on its directive cup 11, and part is reflected from the light on reflected back toward refractive film male and fomale(M&F) 13, avoid light again through light-passing board 6, reduce the decay of light.For improving the luminous efficiency of LED luminescence component 4, can male and fomale(M&F) 13 on cup 11, reflecting cover 5 applies reflective membrane.Reflecting cover 5, light-passing board 6, by the crimping on aluminium alloy installing rack 2 top, are fixedly arranged in connecting portion 12.
As shown in Figure 1 and Figure 2, the sidewall of cylindrical shell 8 and bottom are all provided with air vent 81 on corresponding radiator 3 position.Body 30 and arc radiating fin 32 is comprised by the radiator 3 of aluminum alloy materials casting, the body 30 of radiator 3 is the cylinder of hollow, the inner round wall of body 30 is provided with the screw hole 34 paralleled with the axis of radiator 3, screw hole 34 is through hole, its one end is connected by the bottom of screw with cylindrical shell 8, and the other end is connected with LED luminescence component 4 by screw.The cylindrical wall of body 30 is densely covered with the arc radiating fin 32 of divergent shape, dispersing in end outer rim of arc radiating fin 32 is provided with recess 33 and all recesses 33 are on sustained height, thus forms the groove around radiator 3 outline.See Fig. 1, the cross section of recess 33 is trapezoidal, can also be semicircle, arc, rectangle, stairstepping etc.Certainly, recess 33 on adjacent radiating fin 32 also can rise gradually successively around the axle center of body 30 or decline gradually, the structure risen gradually can drive the hot-air spiral escalation on arc radiating fin 32, and radiating effect is best, but processing inconvenience relatively.For making the air circulation in the hollow region of body 30, the heat accelerating this region sheds, can also radial passage 31 be set on body 30, air vent 81 leaked-in air from cylindrical shell 8 sidewall be guided into this region, and discharges from the air vent 81 of the bottom of cylindrical shell 8.
Above embodiment is only not limited in order to technical scheme of the present invention to be described, all do not depart from spirit and scope of the invention any amendment or equivalently to replace, it all should be encompassed in the scope of technical solution of the present invention.