CN201407564Y

CN201407564Y - LED street lamp

Info

Publication number: CN201407564Y
Application number: CN200920185166XU
Authority: CN
Inventors: 裘国江
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-02-17
Anticipated expiration: 2019-05-22

Abstract

The utility model relates to an LED (light emitting diode) street lamp belonging to the technical field of street lamps. An independent driving power supply that is in the shape of a tube is internally arranged in each LED street lamp unit; in addition, the street lamps with different powers are assembled according to the combination requirement for designing the integral lamp, so as to satisfy the design requirement. According to the requirements of illuminating brightness and luminous spots, the corresponding quantity of the units in corresponding length can be selected to combine with brackets so as to form integral street lamps in various specifications, wherein, the brackets can lead the angle of each unit to rotate freely and enable each unit to be fastened at a proper angle. The LEDstreet lamp has the advantages as follows: the LED street lamp unit adopts the independent power supply, an independent radiating fin and an independent sealing structure, and leads the luminous intensity distribution angle to be adjustable; the power can be combined freely, the radiating area is large, and the service life is long; in addition, a peculiar blowhole is formed so as to balance thepressure difference between the inner part and the outer part of a lighting tube, so that the lighting tube can be prevented from rupturing caused by expanding with heat and contracting with cold.

Description

A kind of LED street lamp

Technical field:

The utility model relates to the street lamp technical field, refers in particular to a kind of LED street lamp.

Background technology:

The heat that LED produces during because of its work is less, and luminous efficiency is higher, has efficient low-consume, energy-conserving and environment-protective, long characteristics of life-span, so be subjected to the attention of various countries.China is used for the electric power of street lighting present every year near 2,500 hundred million degree, and wherein if can have 1/3 to adopt the LED street lighting, annual just can the economize on electricity about 80,000,000,000 degree is equivalent to the annual electricity generating capacity in power station, Three Gorges basically.

Referring to Fig. 1: the structure of common LED street lamp unit is: in the front of substrate 4 LED lamp 6 is set, the back side is provided with fin 3, the front portion is covered with translucent cover 2, and the rear portion is provided with housing 1, forms the relatively-stationary LED street lamp of structure.

Though the heat that produces during the work of single LEDs is considerably less, still can produce certain heat during a large amount of LED intensive work.The operating temperature of LED generally should be less than 50 ℃.There is data to show that when the operating temperature of LED reaches 55 ℃, its life-span will reduce half.The heat radiation system of present LED street lamp is imperfection very, has become it and has applied stumbling-block in the process, and is even more serious for middle this kind of high-capacity LED street lamp situation.Because street lamp is in outdoor environment for a long time, requires waterproof and dustproof, protection against insect on the structure, its lampshade must be the cavity of a sealing.The LED of LED street lamp will work in the environment of sealing equally, and this just means that it can't can only outwards dispel the heat by lampshade by cross-ventilation directly to external world's heat radiation.

Traditional fin generally is that aluminium die casting forms, and only its Mold Making is exactly a no small investment, and the fin weight of aluminium die casting is very big, is difficult to the weight standard that reaches relevant.

Also there is the luminous intensity distribution fixed angle in tradition LED street lamp, and the hot spot standard that the hot spot that is incident upon the road surface is difficult to reach relevant more can't be made different adjustment according to different road conditions.

The utility model content:

The purpose of this utility model provides that a kind of thermal diffusivity is good, adjustable, the energy-saving LED street lamp of luminous intensity distribution angle freedom.

The purpose of this utility model is achieved in that

A kind of LED street lamp, it comprises housing, LED lamp pearl, driving power and fin, LED lamp pearl and substrate, driving power and fin are connected to form has independently-powered, independent fin and independent sealed tubulose LED street lamp unit, each LED street lamp unit adjustable angle in housing.

The bottom blister pack sealing cover of above-mentioned LED street lamp unit, the independent extracting power supply cord of each LED lamp unit pipes is connected with electrical network.

Above-mentioned LED street lamp unit is provided with the inner chamber that makes the LED fluorescent tube and the spiracle of extraneous intercommunication, is inserted with conduit on the spiracle.

The outstanding compared to existing technology advantage of the utility model is:

1, LED street lamp of the present utility model unit adopts independently-powered pattern, can make up street lamp power, satisfies the illumination requirement of different highway sections;

2, LED street lamp of the present utility model unit fin is separate, and area of dissipation is big, as long as common section bar just can be made, not only cost of manufacture is low, and in light weight, assurance safety;

3, LED lamp unit can arbitrarily rotate and adjust the luminous intensity distribution angle, satisfies the light distribution requirements in different light zone;

4, spiracle can be discharged the steam of fluorescent tube inside, and the pressure reduction that balanced fluorescent tube is inside and outside prevents that fluorescent tube from breaking owing to expanding with heat and contract with cold.

5, of the present utility model rational in infrastructure, easy to manufacture, with low cost, long service life.

Description of drawings:

The LED lamp post structure schematic diagram of the prior art that Fig. 1 is;

Fig. 2 is a transverse sectional view of the present utility model;

Fig. 3 is longitudinal sectional view of the present utility model part.

The specific embodiment:

With specific embodiment the utility model is further described below, referring to Fig. 2-3:

A kind of LED street lamp, it comprises housing 10, LED lamp pearl 40 and fin 20, each LED street lamp unit 30 includes pcb board 41 and connects LED lamp pearl on it, driving power, at LED street lamp unit 30 downsides blister pack 31 sealing covers, wherein pcb board 41 is connected on the substrate 50, substrate 50 is fitted on the fin 20, a plurality of LED street lamps unit 30 and housing 10 are combined into the LED street lamp, street lamp is in the use of reality, consider concrete road conditions, there is different luminous intensity distribution angles to require and the intensity of illumination requirement, for example: the LED street lamp unit 30 on right side can be around rotating shaft 61 rotating certain angle among Fig. 2, rotating shaft 61 is connected on the housing, and the brace 60 at 30 two, LED street lamp unit is fixed on the interface fin 20 of support, reaches the purpose of adjusting the light area; Because each LED street lamp unit 30 is independently-powered, therefore can select to be combined into satisfactory whole lamp as required in addition.The subject matter that the LED street lamp in use runs into is heat radiation, and above-mentioned independently fin 20 can effectively solve heat dissipation problem, and independently fin 20 is not only simple for production, save cost, and the more traditional fin of area of dissipation will increase a lot.

The bottom of above-mentioned LED street lamp unit 30 is sealed with blister pack 31 covers, and each LED street lamp unit 30 is drawn the power line that can directly be connected with electrical network separately.

LED street lamp unit 30 in the course of the work, be easy to cause the fluorescent tube blister pack to break owing to expand with heat and contract with cold, therefore above-mentioned LED street lamp unit 30 is provided with the inner chamber that makes LED street lamp unit 30 and the spiracle 64 of extraneous intercommunication, outside conduit 63 lead-out lights by grafting on the spiracle 64, can discharge the steam of 30 inside, LED street lamp unit, pre-anti-electricity device and mechanical breakdown.

The foregoing description only is one of preferred embodiment of the present utility model; be not to limit practical range of the present utility model with this; so: all equivalences of doing according to shape of the present utility model, structure, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1, a kind of LED street lamp, it comprises housing, LED lamp pearl, driving power and fin, it is characterized in that: LED lamp pearl and substrate, driving power and fin are connected to form has independently-powered, independent fin and independent sealed tubulose LED street lamp unit, each LED street lamp unit adjustable angle in housing.

2, a kind of LED street lamp according to claim 1 is characterized in that: the bottom blister pack sealing cover of described LED street lamp unit, the independent extracting power supply cord of each LED lamp unit pipes is connected with electrical network.

3, a kind of LED street lamp according to claim 1 is characterized in that: described LED street lamp unit is provided with the inner chamber that makes the LED fluorescent tube and the spiracle of extraneous intercommunication, is inserted with conduit on the spiracle.