CN104165309A - A kind of LED street lamp with good cooling effect - Google Patents

Abstract

The invention discloses an LED street lamp with a good heat dissipation effect, which comprises an installation support, a lamp rod head, a lower end shell, a plurality of radiators, an upper end shell, an LED light source structure and a light-transmitting cover. The lamp rod head is provided with a first radiating gap which is directly communicated to the radiator at the joint of the lower end shell, the front surface of the lower end shell is provided with a plurality of radiating round holes and radiating strip holes, a second radiating gap is arranged between the radiators, the middle of the back surface of the radiator extends out of the first radiating fins, the two sides of the back surface of the radiator are inclined to extend out of the second radiating fins, and the second radiating fins are distributed in a step structure, and the edges of the second radiating fins are inclined downwards. According to the LED street lamp, the ideal heat dissipation effect is achieved by skillfully arranging the heat dissipation gaps and the heat dissipation fins, and meanwhile, the stair structure of the second heat dissipation fins is beneficial to draining and removing dust. The LED street lamp achieves an ideal heat dissipation effect by utilizing the structural design, has the advantages of simple structure, long service life, water and dust prevention and good lighting effect, and is worthy of being widely popularized and applied to road illumination.

Description

A kind of LED street lamp with good cooling effect

technical field

The invention relates to road lighting technology, in particular to an LED street lamp with good heat dissipation effect.

Background technique

In 1879, Shanghai's Ponte 16 Wharf lit up China's first light. Since then, with the advancement of technology, street lights have become an indispensable public facility in every city.

With the continuous innovation of LED technology, LED will replace traditional light sources and become popular, so as to alleviate the increasingly severe energy crisis in the world and improve the living environment of human beings. Traditional street lights are mostly sodium lamps and energy-saving lamps, which are prone to mercury pollution, while high-power LED street lights are green and pollution-free. With the maturity of high-power LED products and the reduction of manufacturing costs, LED products can be more widely used in street lamp products.

Compared with traditional high-pressure sodium lamp street lamps, LED street lamps not only have the characteristics of good chroma, maintenance-free, and long life. But 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 with good heat dissipation effect, aiming to realize an LED street lamp with simple structure, good heat dissipation, long service life, waterproof and dustproof, and ideal light effect.

The invention proposes an LED street lamp with good heat dissipation effect, which includes a mounting bracket, a light pole head arranged at the end of the mounting bracket, and a lower shell, a plurality of radiators, and an upper shell sequentially connected along the mounting bracket from bottom to top. It also includes an LED light source structure closely attached to the front of the radiator, and a light-transmitting cover covered on the LED light source structure. The LED light source structure includes a circuit board closely attached to the front of the radiator, and LED lights evenly arranged on the circuit board. Beads, the lamp pole head and the lower end of the lower shell are connected by screws, and there is a first cooling gap at the connection between the lamp pole head and the lower end of the lower shell, and the first cooling gap is directly connected to the radiator. There are holes for heat dissipation strips. There are second heat dissipation gaps between some radiators. Several first heat dissipation fins extend from the middle of the back of the radiator. The two sides of the back of the radiator are inclined outwards to extend out the second heat dissipation fins. The second heat dissipation fins It is distributed in a cascade structure, and the edge of the second cooling fins is inclined downward.

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

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, both the lower end shell and the upper end shell are made of thermally conductive metal or plastic.

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 with good heat dissipation effect, which includes a mounting bracket, a light pole head arranged at the end of the mounting bracket, a lower shell, a number of radiators, an upper shell, and an LED light source structure closely attached to the front of the radiator, A transparent cover covering the structure of the LED light source. The light pole head and the lower end of the lower shell are connected by screws. There is a first heat dissipation gap at the connection between the light pole head and the lower end of the lower shell. The first heat dissipation gap is directly connected to the radiator, which is conducive to the circulation of air in the lower end shell for heat exchange. , to achieve the ideal heat dissipation effect, the front of the lower shell is provided with a number of heat dissipation round holes and a number of heat dissipation strip holes. A second heat dissipation gap is provided between several radiators, a number of first heat dissipation fins are extended from the middle of the back of the radiator, and second heat dissipation fins are extended outwards from both sides of the back of the radiator, and the second heat dissipation fins are distributed in a cascade structure , the edge of the second cooling fin is inclined downward. In the LED street lamp of the present invention, through the combination of the first heat dissipation gap and the through hole on the lower end shell, the air flows in each other in the horizontal and vertical directions, so as to accelerate the heat exchange speed and achieve a good heat dissipation effect. The entire radiator is made of heat-conducting metal, and the first heat dissipation fin and the second heat dissipation fin greatly increase the contact area with the air, with good heat conduction and fast heat dissipation, ensuring the long-term normal operation of the LED light source structure and extending the LED light source assembly. service life. At the same time, the cascaded structure of the second cooling fin is beneficial to drainage and dust removal, and the water and dust are not easy to accumulate on the radiator, which effectively protects its service life. The downward sloping design at the edge of the second cooling fin further facilitates the drainage of rainwater without accumulation and backflow without being affected by the outside world. The silicone ring at the junction of the light-transmitting cover and the radiator further improves the IP value of the LED street light, and the lens design of the light-transmitting cover makes the LED light more uniform, the luminous angle is more comprehensive, and the luminous 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 diagram of the front structure of an embodiment of an LED street lamp with good heat dissipation effect of the present invention;

Fig. 2 is a schematic diagram of the back structure of an embodiment of an LED street lamp with good heat dissipation effect of the present invention;

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

Fig. 4 is a schematic diagram of the rear view structure of the radiator in an embodiment of an LED street lamp with good heat dissipation effect of the present invention;

Fig. 5 is a side view structure diagram of a radiator in an embodiment of an LED street lamp with good heat dissipation effect according to 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 with good heat dissipation effect of the present invention is proposed, which includes a mounting bracket and a light pole head 100 arranged at the end of the mounting bracket, and the lower end is sequentially connected along the mounting bracket from bottom to top. Shell 200, several radiators 300, upper shell 400. It also includes an LED light source structure 500 that is closely attached to the front of the radiator 300, and a light-transmitting cover 600 that is covered on the LED light source structure 500. The LED light source structure 500 includes a circuit board 501 that is close to the front of the radiator 300. The LED lamp bead 502 on the circuit board 501 is connected with the lower end of the lamp pole head 100 and the lower end shell 200 by screws, and a first heat dissipation gap 101 is provided at the connection between the lamp pole head 100 and the lower end of the lower end shell 200, and the first heat dissipation gap 101 is directly connected To the radiator 300, the front of the lower end shell 200 is provided with a plurality of heat dissipation round holes 201 and a plurality of heat dissipation strip holes 202, a second heat dissipation gap 301 is provided between the plurality of radiators 300, and a plurality of first heat dissipation fins extend from the middle of the back of the radiator 300 The fins 302 and the second heat dissipation fins 303 extend out from both sides of the back of the heat sink 300 obliquely. The second heat dissipation fins 303 are distributed in a cascade structure, and the edges of the second heat dissipation fins 303 are inclined downward.

The mounting bracket, the light pole head 100 located at the end of the mounting bracket and connected with the mounting bracket by screws, and the radiator 300 fixed on the mounting bracket are all made of heat-conducting metal, and the mounting bracket plays the role of support, fixation and heat conduction here. , so that the light pole head 100 and the radiator 300 form an integrated structure, which has good heat dissipation and fast heat conduction. At the same time, the lamp pole head 100 and the lower end of the lower end shell 200 are connected by screws, and the connection between the lamp pole head 100 and the lower end of the lower end shell 200 is provided with a first heat dissipation gap 101, and the first heat dissipation gap 101 is directly connected to the radiator 300. The lamp pole head 100 It has an integrated structure with the radiator 300 and has a first heat dissipation gap 101 to further improve the heat dissipation effect. The driving device electrically connected to the LED light source structure 500 is placed in the lower shell 200, and the first heat dissipation gap 101 allows horizontal air circulation in the lower shell 200, and quickly removes the heat generated by the driving device through heat exchange. The heat does not accumulate, which effectively protects the long-term normal operation of the driving device and prolongs the service life of the driving device. The front of the lower shell 200 is provided with a plurality of heat dissipation circular holes 201 and a plurality of heat dissipation bar holes 202, so that the airflow in the lower end shell 200 not only circulates horizontally but also vertically, further accelerating the heat exchange speed. The perfect combination of the first heat dissipation gap 101, the heat dissipation round hole 201 and the heat dissipation bar hole 202, on the basis of ensuring waterproof, allows the entire lower shell 200 to be ventilated, the heat dissipation speed is extremely fast, the heat dissipation effect is ideal, and the overall structure is simple.

Compared with traditional high-pressure sodium lamp street lamps, LED street lamps not only have the characteristics of good chroma, maintenance-free, and long life. But 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. Some additional auxiliary tools such as fans are added in order to reduce the working temperature of the LED. Although the heat dissipation effect is very good in the short term, the additional device not only increases the production cost, but the life of the added device is affected by the external environment and cannot be durable. If you want to Replacement is very troublesome and wastes manpower and material resources. In line with the use concept of no increase in production cost, durability, and maintenance-free, the LED street lamp of the present invention achieves an ideal heat dissipation effect through its own design.

The LED light source structure 500 includes a circuit board 501 closely attached to the front of the heat sink 300 , and LED lamp beads 502 uniformly arranged on the circuit board 501 . The heat sink 300 is made of heat-conducting metal, and a second heat dissipation gap 301 is provided between several heat sinks 300, so that the heat generated by the LED light source structure 500 will not be accumulated on the entire heat sink 300 at once, and through the second heat dissipation gap 301, the The heat is effectively dissipated into the outside air, and at the same time, the natural law of air flow is used to take away the heat and promote the heat dissipation effect. A number of first cooling fins 302 extend from the middle of the back of the radiator 300, and second cooling fins 303 extend out from both sides of the back of the radiator 300. The entire back of the radiator 300 is covered with cooling fins, which greatly increases the heat dissipation. The surface area in contact with the outside air. The heat generated by the LED light source structure 500 is quickly transferred to each cooling fin and then further dissipated into the external air, thereby achieving an ideal heat dissipation effect, effectively ensuring the long-term normal operation of the LED light source structure 500, and prolonging the service life of the LED light source structure 500 .

In the LED street lamp of the present invention, through the first heat dissipation gap 101 provided at the connection between the light pole head 100 and the lower end of the lower end shell 200, a number of heat dissipation round holes 201 on the front of the lower end shell 200, heat dissipation strip holes 202, and heat sinks 300. The second heat dissipation gap 301, the first heat dissipation fins 302 and the second heat dissipation fins 303 extending from the back of the radiator 300 are all structural design changes, and ideal heat dissipation can be achieved without additional heat dissipation devices. Effect, ensure the long-term normal operation of LED light source components, and prolong the service life of LED light source components. In this way, the structure is simple, the production cost is low, the production assembly procedure is simplified, the maintenance cost is low, and the heat dissipation effect will not be changed due to the influence of the external environment. Most of the existing LED street lamps are snake head lamps, and the heat dissipation method is mainly radiation heat dissipation, and the heat dissipation effect is not good. When used for a long time, affected by the external environment such as dust, the accumulation of dust will affect its radiation heat dissipation effect, and the heat dissipation effect will become worse and worse, so that the heat generated by LED work will continue to accumulate, and the high temperature will lead to a sharp reduction in the life of LED street lights. The LED street lamp of the present invention uses air convection to dissipate heat, and the air convection not only prevents dust from accumulating, but also has a good waterproof effect. The second heat dissipation fins 303 on both sides of the back of the radiator 300 are distributed in a cascade structure, and the rainwater flows outward along the distribution direction of the steps and takes away the dust. In the device 300, the IP value of the product is indirectly improved.

Both the lower shell 200 and the upper shell 400 are made of thermally conductive metal or plastic.

The translucent cover 600 and the radiator 300 are connected by screw connection, the side of the translucent cover 600 and the radiator 300 are connected with a silicone ring 601, the silicone ring 601 effectively plays the role of waterproof and dustproof, which greatly improves the The IP value of the LED street lamp of the present invention. The silicone ring 601 can not only make the transparent cover 600 and the heat sink 300 tightly connected, but also prevent the screws from crushing the transparent cover 600 , and at the same time prevent the screws from loosening during use and cause water ingress to damage the LED light source structure 500 . The light-transmitting cover 600 is made of glass or plastic. The lens design of the light-transmitting cover 600 changes the phenomenon that the LED light source emits light as a point light source, resulting in uneven light and a small light-emitting area. When the light is irradiated, refraction occurs, 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 invention realizes an LED street lamp with simple structure, good heat dissipation, long service life, waterproof and dustproof, and ideal light effect.

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 (7)

1. A LED street lamp with good heat dissipation effect, comprising a mounting bracket, a light pole head located at the end of the mounting bracket, a lower shell, a plurality of radiators, and an upper shell are sequentially connected along the mounting bracket from bottom to top, and its It is characterized in that it also includes an LED light source structure closely attached to the front surface of the heat sink, and a light-transmitting cover covered on the LED light source structure, and the LED light source structure includes a circuit closely attached to the front surface of the heat sink board, the LED lamp beads evenly arranged on the circuit board, the lamp pole head and the lower end of the lower end shell are connected by screws, and a first heat dissipation gap is provided at the connection between the lamp pole head and the lower end of the lower end shell , the first heat dissipation gap is directly connected to the heat sink, the front of the lower end shell is provided with a number of heat dissipation round holes and a number of heat dissipation bar holes, a second heat dissipation gap is provided between the plurality of heat sinks, and the back of the heat sink A number of first heat dissipation fins extend from the middle, and second heat dissipation fins extend out from both sides of the back of the radiator obliquely. The second heat dissipation fins are distributed in a stepped structure, and the edges of the second heat dissipation fins face toward the down slope. 2 . The LED street lamp with good heat dissipation according to claim 1 , wherein a driving device electrically connected to the LED light source structure is placed in the lower shell. 3 . 3. An LED street lamp with good heat dissipation according to claim 1 or 2, characterized in that, the mounting bracket, the pole head, and the heat sink are all made of heat-conducting metal, and the heat-conducting metal Choose iron, aluminum or copper. 4. The LED street lamp with good heat dissipation effect according to claim 3, characterized in that, both the lower end shell and the upper end shell are made of heat-conducting metal or plastic. 5 . The LED street lamp with good heat dissipation effect according to claim 4 , wherein the transparent cover and the radiator are connected by screws. 5 . 6 . The LED street lamp with good heat dissipation according to claim 5 , wherein a silicone ring is provided at the connection between the side of the light-transmitting cover and the heat sink. 7 . 7 . The LED street lamp with good heat dissipation effect according to claim 6 , wherein the transparent cover is made of glass or plastic.