CN202065857U

CN202065857U - LED streetlamp

Info

Publication number: CN202065857U
Application number: CN201120069513XU
Authority: CN
Inventors: 霍祺; 王建英; 孟庆梅; 刘飞; 张越胜; 李娟�; 张飞燕
Original assignee: BAODING GUANGPU OPTOELECTRONIC Co Ltd
Current assignee: BAODING GUANGPU OPTOELECTRONIC Co Ltd
Priority date: 2011-03-15
Filing date: 2011-03-15
Publication date: 2011-12-07
Anticipated expiration: 2021-03-15

Abstract

The utility model discloses an LED streetlamp, which includes a streetlamp post, a lamp body, and an LED lamp. The lamp body is arranged on a lamp arm of the streetlamp post, and the LED lamp is arranged in the lamp body. The LED streetlamp further includes a constant current drive device, which is arranged in the lamp body and provided with a circuit connected with a power supply and the LED lamp respectively. The lamp body is a die-casting integral aluminum casing. The lamp body provided by the utility model adopts the heat dissipation mode of an aluminum casing structure which combines stretching aluminum and die-casting aluminum, thereby better solving the LED heat dissipation problem and prolonging the service life. The luminous efficiency is high, the color rendering properties are high, no flicker exists, harm to eyes and skin is avoided, and the design is safer. A light source can be continuously used for 80,000 hours, so that the service life is prolonged for more than 10 years, and the light source is not required to be replaced whole life long; and compared with a high pressure sodium lamp, the LED streetlamp can save more than 70% of electricity under the condition of same illumination intensity. The LED streetlamp is environment-friendly, energy-saving, pollution-free, and high in stability, and truly realizes the green and environment-friendly illumination.

Description

A kind of LED street lamp

Technical field

The utility model relates to the street lamp technical field, more particularly, relates to a kind of LED street lamp.

Background technology

Street lamp is the important component part of city illumination, and at present, what be widely used in city illumination is high-pressure mercury lamp.Along with the high speed development of World Economics, the global energy shortage is serious day by day, energy-saving and emission-reduction, and the cry of seeking the low carbon development pattern grows louder and stronger.According to statistics, outdoor road lighting electricity consumption accounts for 30% of whole world total electricity consumption, and under this overall background, the development of the semiconductor lighting industry of efficient energy-saving is like a raging fire, and especially the illumination of LED aspect road used and received much concern especially.

High-power LED street lamp is different with conventional high-pressure mercury lamp street lamp, and it adopts low-voltage DC supply, and LED is packaged together GaN chip and yellow fluorescent powder to make.(λ p=465nm Wd=30nm), sends sodium yellow after the YAG fluorescent material that contains Ce3+ that high temperature sintering is made is subjected to this blue-light excited and launches peak value 550nm GaN chip blue light-emitting.The blue-ray LED substrate is installed in the bowl-type reflection cavity, covers to be mixed with the thin resin layer of YAG, about 200-500nm.Blue light that the LED substrate sends part is absorbed by fluorescent material, the yellow light mix that another part blue light and fluorescent material send, can obtain white light.The high-power LED street lamp safety and environmental protection does not contain harmful mercury metal, environment is worked the mischief when scrapping unlike high-pressure mercury lamp or Metal halogen lamp.There is not bad dazzle.Eliminate caused dazzling, visual fatigue of the bad dazzle of common street lamp and sight line and disturb, improve the security of driving, reduce the generation of traffic accident.But there is a lot of drawbacks in the LED street lamp at present.

The great power LED heating problem has become the bottleneck of restriction LED illumination development.The long-life of led light source is based on its temperature control basis, and the rising of PN junction temperature can cause device performance to change and decay, and this also is why single LEDs still can't provide big brightness one of the reason of lighting source of deciding.At the heat dissipating method of led light source in illumination, someone advises adopting instrument fan and radiator to dispel the heat, though it is simple, but this method is owing to increased the heat radiation annex, to bring requirements at the higher level to designing and producing of LED light fixture IP degree of protection, and owing to not as good as led light source service life, must increase many maintenances the service life of fan, radiator etc.While, radiating element can influence radiating effect greatly owing to the interference of dust after using a period of time because our lighting field of employment possibility airborne dust is very big sometimes.

In addition, LED power supply is different from conventional light source, use be low-voltage DC.Efficiently, the DC-DC change-over circuit of coupling is to guarantee the LED prerequisite in theoretical life-span, the conversion ratio of power supply and drive circuit is a key factor that influences the LED illumination efficiency.

Tradition led light source lighting angle is little, some area brightness height, and scattering of light has extremely strong directionality, thereby makes light source form luminous point, and the light uniformity is bad, has fettered its application in field of illuminating lamps.

The utility model content

In view of this, the utility model provides a kind of LED street lamp, to improve the radiating effect of LED street lamp, improves service life.

For achieving the above object, the utility model provides following technical scheme:

A kind of LED street lamp comprises light pole, lamp body, LED lamp, and described lamp body is arranged on described light pole arm, described LED lamp is arranged in the described lamp body, also comprise being arranged in the described lamp body, the constant current driving device that links to each other with described LED lamp with power supply respectively, described lamp body is a die casting one aluminum hull.

Preferably, in above-mentioned LED street lamp, described constant current driving device is the booster type constant current driving device.

Preferably, in above-mentioned LED street lamp, also comprise the lens that are arranged on the described lamp body, the LED lamp that is arranged in the described lamp body is contained in described lens, and the described lens position corresponding with described LED lamp is the cambered surface of indent.

Preferably, in above-mentioned LED street lamp, described LED lamp is a plurality of, and is arranged in uniformly on the described circuit board.

From above-mentioned technical scheme as can be seen, lamp body of the present utility model better solves the led heat dissipation problem by the radiating mode of the aluminum hull structure that adopts stretching aluminium and combine with die casting aluminium, makes its life-span longer.The luminous efficiency height, high-color rendering, flicker free does not have injury to eyes and skin, designs safer.Light source can use 80000 hours continuously, reached service life more than 10 years, need not to change light source all the life, with under the equiluminous than high-pressure mercury lamp economize on electricity more than 70%.Environmental protection and energy saving are pollution-free, and stability is high, realized environmental protection illumination truly.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The structural representation of the LED street lamp that Fig. 1 provides for the utility model embodiment;

The circuit diagram of the booster type constant current driving device that Fig. 2 provides for the utility model embodiment.

The specific embodiment

The utility model discloses a kind of LED street lamp,, improve service life to improve the radiating effect of LED street lamp.

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

See also Fig. 1, the structural representation of the LED street lamp that Fig. 1 provides for the utility model embodiment.

The LED street lamp that the utility model provides comprises light pole, lamp body 1, LED lamp 3, and described lamp body 1 is arranged on described light pole arm, and described LED lamp 3 is arranged in the described lamp body 1.The utility model also comprises and being arranged in the described lamp body 1, the constant current driving device that links to each other with described LED lamp 3 with power supply respectively, and described lamp body 1 is die casting one aluminum hull.Adopt after the constant current driving device power supply, change to be converted into the variation of its forward voltage by the caused electric current of variations in temperature, thereby can not cause the variation of brightness and spectrum.

Lamp body of the present utility model has ensured that fully the high-power LED street lamp heat radiation requires and service life, has fundamentally satisfied the design of high-power LED street lamp fixture structure and moulding, has the distinct characteristic of high-power LED street lamp, and outward appearance is frivolous.The integral LED street lamp effectively reduces windage and weight, alleviates the load of lamp stand, strengthens safety coefficient.Use the high thermal conductivity coefficient aluminium sheet as housing, can adopt the aluminium base surface mounting technology, in the circuit design scheme, thermal diffusion is very effectively handled, reduce the product running temperature, improve product power density and reliability, prolong product service life.The luminous efficiency height, high-color rendering, flicker free does not have injury to eyes and skin, designs safer.Light source can use 80000 hours continuously, reached service life more than 10 years, need not to change light source all the life, with under the equiluminous than high-pressure mercury lamp economize on electricity more than 70%.Environmental protection and energy saving are pollution-free, and stability is high, realized environmental protection illumination truly.

As shown in Figure 2, the circuit diagram of the booster type constant current driving device that provides for the utility model embodiment of Fig. 2.

The constant current driving device that the utility model provides can be the booster type constant current driving device.Shown a basic inductance boost circuit among the figure, its middle controller has provided a pwm switching signal and has controlled high-power switch tube, and to induction charging, and the energy in the inductance just charges to electric capacity the latter when disconnecting when conducting.Later just can rise to higher voltage to input voltage through switch several times, thereby finish the task of boosting, the work that changes pwm signal is than just changing its output voltage.In order to keep the constant of output current, just require to measure output current value, this is to measure by a small resistor with the LED series connection.This ohmically voltage just and a reference voltage compare, relatively the error signal that is drawn is just sent to controller in order to change the work ratio of pwm signal, has so just realized that a closed loop controls automatically, is constant to control its output current.

Electric power system of the present utility model is 12V/24V, adopts 7 strings 4 and circuit (14 strings 2 are also), voltage 3.2*7=22.4V, and step-up ratio 1.8 reduces step-up ratio greatly, utilization of power efficient height.High-accuracy and constant current control, control accuracy be better than ± and 2%, adopt advanced Two-phase Boost circuit, the high efficiency high reliability.By regulating output current, can realize that total power and half-power regulate automatically.Complete full-automatic electronic defencive function is arranged, comprising: input protection to error-polarity connection, output short circuit protection, output open circuit protection.

The utility model also can comprise the lens 2 that are arranged on the described lamp body 1, and the LED lamp 3 that is arranged in the described lamp body 1 embeds described lens 2, and described lens 2 and described LED lamp 3 corresponding positions are the cambered surface of indent.Utilize features such as reflection of light, diffraction, refraction that light is fully integrated by overall lens.Then according to 65 * 125 ° of special angles, optical lens light is arranged in together uniformly light is radiated within the specific scope uniformly, to guarantee the optimum rate of utilization of light.LED lamp 3 is a plurality of, and is arranged in uniformly on the described lens 2, for example can adopt the mode of array to be arranged on the lens 2.The module-integrated design of the utility model can be arbitrarily made with the product of different capacity and brightness, and each module is light source individuality independently, convenient and flexible installation.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. LED street lamp, comprise that light pole, lamp body (1), the described lamp body of LED lamp (3) (1) are arranged on described light pole arm, described LED lamp (3) is arranged in the described lamp body (1), it is characterized in that, also comprise and being arranged in the described lamp body (1), the constant current driving device that links to each other with described LED lamp (3) with power supply respectively, described lamp body (1) is a die casting one aluminum hull.

2. LED street lamp as claimed in claim 1 is characterized in that, described constant current driving device is the booster type constant current driving device.

3. LED street lamp as claimed in claim 1 or 2, it is characterized in that, also comprise the lens (2) that are arranged on the described lamp body (1), the LED lamp (3) that is arranged in the described lamp body (1) is built in lens (2), and described lens (2) position corresponding with described LED lamp (3) is the cambered surface of indent.

4. LED street lamp as claimed in claim 3 is characterized in that, described LED lamp (3) is a plurality of, and is arranged in uniformly on the interior circuit board of described lens (2).