CN104165314A - LED street lamp - Google Patents

Abstract

The invention discloses an LED street lamp which comprises an installation support, a lamp rod head, a lower end shell, a radiator and an upper end shell, wherein the lower end shell, the radiator and the upper end shell are sequentially connected along the installation support from bottom to top. A heat dissipation gap which is directly communicated to the radiator is formed between the lower end of the lower end shell and the lamp post head, a plurality of first heat dissipation through holes are formed in the front end shell of the lower end shell, a plurality of heat dissipation stripes are arranged on the front side of the radiator, heat dissipation fins which are distributed in a plurality of rows and columns are arranged on the back side of the radiator, third heat dissipation through holes are formed among the rows and columns of heat dissipation fins, a hollow cavity is arranged inside the upper end shell, and a plurality of second heat dissipation through holes are formed in. According to the LED street lamp, the parts of the LED street lamp are connected with each other in a clearance mode, the heat dissipation holes of the parts are designed, the heat dissipation fins are arranged, good heat dissipation effects are achieved through transverse and longitudinal air circulation, the structure is simple, the service life is long, the LED street lamp is waterproof and dustproof, the lighting effect is good, and the LED street lamp is worthy of being widely popularized and applied to road lighting.

Description

A kind of LED street light

technical field

The invention relates to road lighting technology, in particular to an LED street lamp.

Background technique

With the aggravation of the world energy crisis, all countries are seeking solutions to the energy crisis. One is to seek the utilization of new energy and renewable energy; the other is to seek new energy-saving technologies to reduce energy consumption and improve energy utilization efficiency.

Compared with traditional high-pressure sodium lamp street lamps, LED street lamps not only have the characteristics of good chromaticity, maintenance-free, and long life, but more importantly, they are more energy-efficient than traditional street lamps, effectively reducing the energy crisis. Generally speaking, street lamps are located outdoors and are affected by factors such as dust and ambient temperature, making heat dissipation an important factor affecting the life of LED street lamps. As we all know, there are three main ways of heat transmission: conduction, radiation, and convection. However, most of the existing LED street lights are snake head lights, and the heat dissipation method is mainly radiation heat dissipation, and the heat dissipation effect is not good. When used for a long time, due to the influence of dust and other external environments, the heat dissipation effect will become worse and worse, so that the heat generated by the LED will continue to accumulate, and the high temperature will lead to a sharp decrease in its life.

Therefore, how to realize an LED street lamp with simple structure, good heat dissipation, long service life, waterproof and dustproof, and ideal light effect is a technical problem to be solved urgently in the industry.

Contents of the invention

The main purpose of the present invention is to provide an LED street lamp, aiming to realize an LED street lamp with simple structure, good heat dissipation, long service life, waterproof and dustproof, and ideal light effect.

The present invention proposes an LED street lamp, which includes a mounting bracket, a light pole head arranged at the end of the mounting bracket, and a lower end shell, a radiator, and an upper end shell are sequentially connected along the mounting bracket from bottom to top. It also includes an LED light source structure that is closely attached to the front of the radiator, and a light-transmitting cover that is covered on the LED light source structure. The LED light source structure includes a circuit board that is close to the front of the radiator, and evenly arranged LED lamp beads, with air holes on the light-transmitting cover. The lower end shell is arranged outside the light pole head, and there is a heat dissipation gap directly leading to the radiator between the lower end of the lower end shell and the light pole head. The rear shell connected by screws, the front of the radiator is provided with a number of heat dissipation stripes, the back of the radiator is provided with heat dissipation fins distributed in multiple rows and columns, and a third heat dissipation through hole is provided between each row and column of heat dissipation fins. The upper shell and the mounting bracket are connected by card insertion, the upper shell is provided with a hollow cavity inside, and a plurality of second heat dissipation through holes are provided on the top of the hollow cavity.

Preferably, the driving device electrically connected to the LED light source structure is placed in the lower end shell.

Preferably, the position of the opening of the first heat dissipation through hole on the front end shell is correspondingly adapted to that of the driving device.

Preferably, the mounting bracket, lamp pole head, and radiator are all made of heat-conducting metal, and the heat-conducting metal is selected from iron, aluminum or copper.

Preferably, the lower shell and the upper shell are made of heat-conducting metal or plastic.

Preferably, gaps are provided between the lower end shell, the radiator and the upper end shell.

Preferably, the transparent cover and the radiator are connected by screw connection.

Preferably, a silicon ring is provided at the joint between the side of the transparent cover and the radiator.

Preferably, the transparent cover is made of glass or plastic.

The present invention proposes an LED street lamp, which includes a mounting bracket and a light pole head, along which a lower shell, a radiator, and an upper shell are sequentially connected from bottom to top along the mounting bracket, and also includes an LED light source structure and a device covering the LED light source structure. Light-transmitting cover with ventilation holes. The lower end shell is set outside the light pole head, and there is a heat dissipation gap directly leading to the radiator between the lower end of the lower end shell and the light pole head. The lower end shell includes a front end shell and a rear end shell with a plurality of first heat dissipation through holes on the shell surface. There are several heat dissipation stripes on the front of the radiator, and multiple rows and columns of heat dissipation fins on the back of the radiator. There is a third heat dissipation through hole between each row and column of heat dissipation fins, and the inside of the upper shell is set as a hollow cavity. , the top of the hollow cavity is provided with a number of second heat dissipation through holes. The LED street lamp of the present invention is connected with gaps between its parts, so that the whole can perform heat exchange through air circulation under the condition of ensuring waterproof and dustproof, so as to achieve a good heat dissipation effect. At the same time, the design of the heat dissipation holes allows the LED street lamps to dissipate heat through airflow, regardless of whether they are vertical or horizontal. The structure is simple and the cooling effect is good. At the same time, there are some heat dissipation stripes and heat dissipation fins on the main components, which increase the contact area with the air, greatly speed up the heat dissipation, effectively ensure the long-term normal operation of the LED light source structure, and prolong the service life of the LED light source components. The heat dissipation holes on the light-transmitting cover allow the heat generated by the LED lamp beads to spread outward in time, and the heat does not accumulate. At the same time, the light transmission cover can make the light more uniform, the light angle is more comprehensive, and the light effect is more ideal. The LED street lamp of the present invention uses its own structural design to achieve an ideal heat dissipation effect, and has a simple structure, long service life, waterproof and dustproof, and good light efficiency, and is worthy of being widely used in road lighting.

Description of drawings

Fig. 1 is a schematic view of the front structure of an embodiment of an LED street lamp of the present invention;

Fig. 2 is a schematic diagram of the rear structure of an embodiment of an LED street lamp of the present invention;

Fig. 3 is a schematic diagram of a side view structure of a light pole head in an embodiment of an LED street lamp of the present invention;

Fig. 4 is a schematic diagram of the front structure of an embodiment of an LED street lamp according to the present invention, showing the internal structure of the lower shell;

Fig. 5 is a three-dimensional structural schematic diagram of main components in an embodiment of an LED street lamp of the present invention.

the

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Fig. 1 to Fig. 5, an embodiment of an LED street lamp of the present invention is proposed, which includes a mounting bracket 200, a light pole head 100 arranged at the end of the mounting bracket 200, and a lower end shell is sequentially connected along the mounting bracket 200 from bottom to top. , radiator 500, upper shell 600. It also includes an LED light source structure close to the front of the radiator 500, a light-transmitting cover 800 covering the LED light source structure, the LED light source structure includes a circuit board 700 close to the front of the radiator 500, and evenly arranged on the The LED lamp bead 701 on the circuit board 700 is provided with a ventilation hole 801 on the transparent cover 800 . The lower end shell is arranged outside the light pole head 100, and there is a heat dissipation gap 101 directly leading to the radiator 500 between the lower end of the lower end shell and the light pole head 100. The lower end shell includes a front end shell with a plurality of first heat dissipation through holes 301 on the shell surface 300, the rear shell 400 connected with the front shell 300 by screws, the front of the radiator 500 is provided with a number of heat dissipation stripes 501, and the back of the radiator 500 is provided with heat dissipation fins 503 distributed in multiple rows and columns, each row and column dissipate heat Third heat dissipation through holes 502 are provided between the fins 503 . The upper shell 600 is connected with the mounting bracket 200 by means of card insertion, and the upper shell 600 is provided with a hollow cavity inside, and a plurality of second heat dissipation through holes 601 are provided on the top of the hollow cavity.

The lower end shell is set outside the light pole head 100, and there is a heat dissipation gap 101 directly leading to the radiator 500 between the lower end of the lower end shell and the light pole head 100. The upper end shell 600 and the mounting bracket 200 are connected by a card insertion method. The interior is set as a hollow cavity, and the top of the hollow cavity is provided with a plurality of second heat dissipation through holes 601 . Through the ingenious combination of the heat dissipation gap 101 and the second heat dissipation through hole 601, it is obvious that the air of the LED street lamp can circulate from bottom to top, and the heat exchange can be carried out through the air flow, which can achieve a good heat dissipation effect and not accumulate heat. , Effectively ensure the long-term normal operation of the LED light source structure and prolong the service life of the LED light source components.

At the same time, the front end shell 300 of the lower end shell is provided with a first heat dissipation through hole 301, and the driving device 900 electrically connected to the LED light source structure is placed in the lower end shell and is adapted to the opening position of the first heat dissipation through hole 301. The third heat dissipation through hole 502 is provided between the heat dissipation fins 503 on the back of the 500 . It can be seen that the air flow not only circulates vertically, but also can smoothly exchange heat horizontally, the entire housing is ventilated and dissipated, and the external dust will not stay and accumulate in the lamp housing through the action of wind. The heat generated when the driving device 900 is in operation can not only dissipate heat through the heat dissipation gap 101, but also immediately pass through the first heat dissipation through hole 301 and be directly dissipated into the outside air, effectively protecting the normal operation of the driving device 900 and prolonging its use. life. The third radiating through hole 502 can also play a drainage role. When it rains, the rainwater can directly pass through the third radiating through hole 502 and be discharged to the natural world. Rainwater and dust do not accumulate between the cooling fins 503 on the back side of the radiator 500, and the circulation of air and the discharge of rainwater make the radiator 500 not accumulate dust, effectively protecting its cooling effect. The LED street lamp of the present invention achieves a very good heat dissipation effect through its own design, unlike traditional street lamps that use radiation as the main heat dissipation method, which has a poor heat dissipation effect. When used for a long time, affected by the external environment such as dust, the dust covers the street lamp, the radiation is seriously affected, and the heat dissipation effect will become worse and worse, so that the heat generated by the LED will continue to accumulate, and the high temperature will lead to a sharp reduction in the life of the LED light source component. .

The front of the radiator 500 is provided with a plurality of heat dissipation stripes 501 , and the back of the radiator 500 is provided with heat dissipation fins 503 distributed in multiple rows and columns. The heat generated by the LED light source structure that is closely attached to the front of the radiator 500 is quickly transferred to the radiator 500. The design of the heat dissipation stripes 501 and the heat dissipation fins 503 greatly increases the contact area between the heat dissipation surface and the external air, and quickly and timely The heat is dissipated to further ensure the long-term normal operation of the LED light source structure.

The mounting bracket 200, the light pole head 100, and the radiator 500 are all made of heat-conducting metal, and the heat-conducting metal is selected from iron, aluminum or copper. The lower shell and the upper shell 600 are made of thermally conductive metal or plastic. Heat-conducting metal has good heat-conducting effect, and the heat generated by the LED street lamp does not accumulate when it is working, and the heat dissipation is good and the heat conduction is fast. There is a gap between the lower shell, the radiator 500 and the upper shell 600, so that the working parts of the LED street lamp can communicate with the outside air at 360 degrees without dead ends, further promoting heat exchange, and at the same time, the through holes and gaps can prevent rainwater and dust from accumulating in the The connection part is dustproof and waterproof.

The light-transmitting cover 800 is made of glass or plastic, and the light-transmitting cover 800 and the heat sink 500 are connected by screws, and a silicone ring is provided at the joint. The silicone ring effectively plays the role of waterproof and dustproof, greatly improving the IP value of the LED street lamp of the present invention. The silicone ring can not only make the transparent cover 800 and the radiator 500 tightly connected, but also prevent the screws from crushing the transparent cover 800, and prevent the screws from loosening during use and causing water ingress to damage the structure of the LED light source. The light-transmitting cover 800 is provided with a vent hole 801, under the condition of ensuring that the water is not infiltrated, the heat generated by the operation of the LED lamp bead 701 is discharged to the outside air, thereby reducing the temperature inside the light-transmitting cover 800, effectively ensuring that the LED lights Bead 701 works fine for a long time. The way that the LED light source emits light with a point light source leads to uneven distribution of light intensity, narrow luminous range, small light emitting surface of the LED light source, and excessive concentration of light intensity distribution to cause light spots on the ground. The lens design of the LED street lamp light-transmitting cover 800 of the present invention, Refraction occurs when the light is irradiated, so that the light is more uniform, the lighting angle is more comprehensive, the lighting effect is more ideal, and the lighting is more in line with the technical requirements of road lighting.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, are all The same reasoning is included in the patent protection scope of the present invention.

Claims (9)

1. a LED street lamp, comprise mounting bracket, be located at the lamp stand head of described mounting bracket end, along described mounting bracket, be connected with from the bottom to top lower end housing in turn, radiator, upper end housing, it is characterized in that, also comprise the LED light source structure of being close on described radiator front, be covered on the structural diffuser of described LED light source, described LED light source structure comprises the circuit board of being close on described radiator front, evenly be laid in the LED lamp pearl on described circuit board, described diffuser is provided with air-vent, described lower end clamshell is located at outside described lamp stand head, between described lower end housing lower end and described lamp stand head, be provided with the heat radiation space that passes straight through to described radiator, described lower end housing comprises that shell face is provided with the front end housing of some the first heat radiation through holes, the rear end housing being connected by screw with described front end housing, described radiator front is provided with some heat radiation stripeds, the described radiator back side is provided with and is the radiating fin that many row's multiple rows distribute, described respectively row is provided with the 3rd heat radiation through hole between each row radiating fin, described upper end housing is connected by blocking the mode of inserting with described mounting bracket, described upper end housing inside is set to hollow cavity, described hollow cavity top is provided with some the second heat radiation through holes.

2. a kind of LED street lamp according to claim 1, is characterized in that, the drive unit being electrically connected to described LED light source structure is placed in described lower end housing.

3. a kind of LED street lamp according to claim 1 and 2, is characterized in that, the heat radiation of first on described front end housing vias position is corresponding with described drive unit adaptive.

4. a kind of LED street lamp according to claim 3, is characterized in that, described mounting bracket, described lamp stand head, described radiator are made by heat-conducting metal, and described heat-conducting metal is selected iron, aluminium or copper.

5. a kind of LED street lamp according to claim 4, is characterized in that, described lower end housing and described upper end housing are made by heat-conducting metal or plastics.

6. a kind of LED street lamp according to claim 5, is characterized in that, between described lower end housing, described radiator and described upper end housing, is provided with gap.

7. a kind of LED street lamp according to claim 6, is characterized in that, described diffuser is connected by screw mode with described radiator and is connected.

8. a kind of LED street lamp according to claim 7, is characterized in that, the junction of described diffuser side and described radiator is provided with silica gel ring.

9. a kind of LED street lamp according to claim 8, is characterized in that, described diffuser is made by glass or plastics.