The LED street lamp of built-in heat abstractor
Technical field
The utility model relates to a kind of light fixture that is used for road lighting, says it is a kind of LED street lamp of built-in heat abstractor definitely.
Background technology
Along with the energy-saving and emission-reduction situation needs, agenda has been mentioned in the reducing energy consumption of urban road, and country has listed lighting energy saving in " one of ten big energy conservation projects ".The city street lamp of China is more, change the light emitting source of these conventional lamp into energy-conservation LED light emitting source, just can reach energy-conservation 50% the above object.But because present most of street lamp is the sodium vapor lamp light source with light fixture, be the circular arc type structure, the reflection shield radian is very dark, and is not with heat abstractor, and the led module light source is a plate armature, and need have radiator.Therefore, it is complicated to be adapted as led module light-emitting lamp structure to the high-pressure mercury lamp light fixture, installs inconvenient.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of LED street lamp of built-in heat abstractor, the LED street lamp of this built-in heat abstractor is easy for installation, simple in structure, cost is low, any traditional sodium vapor lamp lamp installation can be become the LED light fixture of built-in heat abstractor.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of LED street lamp of built-in heat abstractor, form by lamp housing, power-supply controller of electric, radiator, led light source module, reflection shield, light-distribution lens, sealing ring and lampshade, described lamp housing is made up of last lamp housing and following lamp housing, reflection shield is fixedly mounted on down on the lamp housing by the flanging clamp, and radiator lower surface (by screw) is fixed on above the reflection shield; The heat-conducting substrate of led light source module is fixed on the radiator lower surface, the led light source module is in the centre bore of reflection shield, be filled with heat-conducting glue between the heat-conducting substrate of led light source module and radiator lower surface, the centre bore interior (forming sealing with glue) of reflection shield is located in the light-distribution lens sealing; Be provided with sealing ring between reflection shield and the radiator lower surface, central hole is in sealing ring, and so radiator, reflection shield, sealing ring and light-distribution lens constitute the light-source chamber of a waterproof and dustproof; The peripheral closed set of lampshade is in the flange of reflection shield, for sealing with glass cement; Power-supply controller of electric (by screw) is fixed on down on the lamp housing.
Described radiator adopts aluminium to stretch or die casting forms, form by heat transfer substrate and some fin, some fin are fixedly installed on the heat transfer substrate upper surface, the radiator lower surface is a heat transfer substrate, the heat transfer substrate of radiator lower surface (by screw) is fixed on above the reflection shield, sealing ring is on reflection shield and between the heat transfer substrate lower surface, be connected above the heat-conducting substrate of led light source module heat transfer substrate lower surface and heat-conducting glue is located between the two, heat transfer substrate is the plane towards the lower surface of lampshade, heat transfer substrate thickness is set between 0.5~1 centimetre, the thickness of fin is 1~3 millimeter, highly be 5~10 centimetres, spacing is 0.5~2 centimetre, and entire radiator is done the anodic oxidation preservative treatment.
Described led light source module is flat rectangle or arc structure, form by the integrated encapsulation of LED wafer, and be provided with two faces, one flat luminous and a plane thermal conductive surface, led light source module upper surface is plane thermal conductive surface (being heat-conducting substrate), and flat luminous towards light-distribution lens.
Described reflection shield is made moulding by aluminium book plate or stainless steel mirror board, and does anticorrosion and reflective processing, and the periphery of reflection shield centre bore is provided with circular groove, and described sealing ring places circular groove.
Described light-distribution lens is the lens that glass is made, and requires the different planform of design according to different hot spots.
Described sealing ring is circular, and it is material that sealing ring adopts resistant to elevated temperatures rubber or fluoroplastics.
Described power-supply controller of electric is provided with power supply constant-current circuit, constant current control apparatus and holding circuit.
The beneficial effects of the utility model are: adopt high-power LED light source module to replace conventional light source to can save energy 80%, owing to built-in radiator, the heat that the led light source module can be sent dissipates again, guarantees that the led light source module is operated in the allowable temperature scope, guarantee light efficiency, reduced light decay; This example adopts the lamp housing and the lampshade of conventional road lamp, and the street lamp shell of all conventional light source all can be provided with and be mounted to the led light source light fixture, and is simple in structure, the cost cost is low.
Description of drawings:
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the utility model reflection shield schematic diagram;
Fig. 3 is the A-A face profile of this Fig. 2;
Fig. 4 is the utility model radiator schematic diagram;
Fig. 5 is the upward view of Fig. 4;
Fig. 6 is the utility model led light source module diagram;
Fig. 7 is the utility model power controller circuit module diagram.
The specific embodiment
Embodiment: a kind of LED street lamp of built-in heat abstractor, form by lamp housing 1, power-supply controller of electric 2, radiator 3, led light source module 4, reflection shield 5, light-distribution lens 6, sealing ring 7 and lampshade 8, described lamp housing is made up of last lamp housing and following lamp housing, reflection shield 5 is fixedly mounted on down on the lamp housing by the flanging clamp, and radiator 3 lower surfaces (by screw) are fixed on above the reflection shield 5; The heat-conducting substrate 16 of led light source module 4 is fixed on radiator 3 lower surfaces, led light source module 4 is in the centre bore 11 of reflection shield 5, be filled with heat-conducting glue between the heat-conducting substrate 16 of led light source module 4 and radiator 3 lower surfaces, the centre bore 11 interior (forming sealing with glue) of reflection shield 5 is located in light-distribution lens 6 sealings; Be provided with sealing ring 7 between reflection shield 5 and radiator 3 lower surfaces, centre bore 11 is in the sealing ring 7, and so radiator 3, reflection shield 5, sealing ring 7 and light-distribution lens 6 constitute the light-source chamber of a waterproof and dustproof; The peripheral closed set of lampshade 8 is in the flange of reflection shield 5, for sealing with glass cement; Power-supply controller of electric 2 (by screw) is fixed on down on the lamp housing.
Described radiator 3 adopts aluminium to stretch or die casting forms, form by heat transfer substrate 13 and some fin 14, some fin 14 are fixedly installed on heat transfer substrate 13 upper surfaces, radiator 3 lower surfaces are heat transfer substrate 13, the heat transfer substrate 13 (by screw) of radiator 3 lower surfaces is fixed on above the reflection shield 5, sealing ring 7 is on reflection shield 5 and between heat transfer substrate 13 lower surfaces, be connected above the heat-conducting substrate 16 of led light source module 4 heat transfer substrate 13 lower surfaces and heat-conducting glue is located between the two, heat transfer substrate 13 is the plane towards the lower surface of lampshade, heat transfer substrate 13 thickness are set between 0.5~1 centimetre, the thickness of fin 14 is 1~3 millimeter, highly be 5~10 centimetres, spacing is 0.5~2 centimetre, and entire radiator 3 is done the anodic oxidation preservative treatment.
Described led light source module 4 is flat rectangle or arc structure, form by the integrated encapsulation of LED wafer, and be provided with two faces, one flat luminous 15 and plane thermal conductive surfaces, led light source module upper surface is plane thermal conductive surface (being heat-conducting substrate 16), and flat luminous 15 towards light-distribution lens 6.
Described reflection shield 5 is made moulding by aluminium book plate or stainless steel mirror board, and does anticorrosion and reflective processing, and the periphery of reflection shield 5 centre bores 11 is provided with circular groove 12, and described sealing ring 7 places circular groove 12.
The lens that described light-distribution lens 6 is made for glass require the different planform of design according to different hot spots.
Described sealing ring 7 is circular, and it is material that sealing ring 7 adopts resistant to elevated temperatures rubber or fluoroplastics.
Described power-supply controller of electric 2 is provided with power supply constant-current circuit, constant current control apparatus and holding circuit.
The beneficial effects of the utility model are: adopt high-power LED light source module 2 to replace conventional light source to can save energy 80%, again because built-in radiator 3, the heat that led light source module 4 is sent can be dissipated, guarantee that led light source module 4 is operated in the allowable temperature scope, guarantee light efficiency, reduced light decay; This example adopts the lamp housing 1 and the lampshade 8 of conventional road lamp, and the street lamp shell of all conventional light source all can be provided with and be mounted to the led light source light fixture, and is simple in structure, the cost cost is low.
This example can be set to the light fixture of single light source structure, also can be arranged to double-light-source structured light fixture.
Operation principle of the present utility model is:
Heat transfer radiating principle:, therefore rational heat abstractor need be set make the temperature of led chip be controlled in its operating temperature that is fit to because the existence of resistance in the LED produces a large amount of heat when led chip is luminous.Led light source module 4 plane thermal conductive surfaces (heat-conducting substrate 16) are close to and are installed on radiator 3 heat transfer substrates 13 in the native system, heat can very fast plane thermal conductive surface 16 by led light source module 4 passes to the heat transfer substrate 13 of radiator 3 and is sent on each fin 14 of radiator 3 and dissipates like this, guaranteed that led chip is operated in the temperature allowed range, realized the function that to dispel the heat when LED is luminous.Led light source module 4 plane thermal conductive surfaces 16 and 13 of radiator 3 heat transfer substrates can be aided with certain heat-conducting glue during installation, so can reduce the heat transmission resistance that does not closely cause because of both contacts.
Luminous luminous intensity distribution principle: the luminescent ligand photosystem mainly is made up of flat luminous 15 of led light source module 4, reflection shield 5, light-distribution lens 6, lampshade 8.Reflection shield 5 upper center are provided with centre bore 11, led light source module 4 is in the centre bore 11 of reflection shield upper center, light-distribution lens 6 is sealingly fastened in the centre bore 11 of reflection shield, lampshade 8 peripheral sealed cards are formed in 5 times side periphery in-flanges of reflection shield, reflection shield 5 couplings are fixed in the lamp housing 1, so reflection shield 5, light-distribution lens 6 and sealing are fixed on 3 light-source chamber that form sealing of radiator of reflection shield upside, reach the requirement of rain-proof dust-proof and reach the sealing grade of IP65.The plane directional light that led light source module flat light-emitting area 15 is sent can change its rising angle behind light-distribution lens 6, thereby change the spot size and the illumination uniformity, can adjust the length-width ratio of hot spot by the shape that changes light-distribution lens 6, and reflection shield 5 also plays the effect of fixedly light-distribution lens 6 and radiator 3 and reaches certain beauty function when playing auxiliary luminous intensity distribution.