LED street lamp

Abstract

An LED street lamp comprises a lamp pole and a lamp cap arranged on the lamp pole. The lamp cap comprises a first connecting plate connected with a substrate and a second connecting plate connected with the first connecting plate, the second connecting plate is opposite to the first connecting plate, and a clearance layer exists between the first connecting plate and the second connecting plate. A plurality of cooling fins are connected with the face, away from the substrate, of the second connecting plate. Heat transfer shafts are arranged at the connecting positions of the second connecting plate and the cooling fins, and heat pipes are inserted in the middles of the heat transfer shafts. The cooling fins are rotatably connected with the heat transfer shafts. Springs are connected between the ends, away from circular rings, of the cooling fins and the second connecting plate. An acute included angle is formed by each cooling fin and the second connecting plate, and vent holes are formed in the acute included angle positions of the second connecting plate and the cooling fins. According to the LED street lamp, when the LED street lamp is turned on, heat generated by the substrate can be emitted out through the cooling fins, meanwhile, the cooling fins can guide more air to enter the clearance layer, and cooling is facilitated. The springs can limit the cooling fins, and can protect the cooling fins and the LED street lamp.

Description

technical field [0001] The invention relates to an LED lamp, in particular to an LED street lamp. Background technique [0002] LED (Light Emitting Diode), that is, semiconductor electric light source, light-emitting diode, also known as semiconductor lamp, is a kind of electric light source without filament, which directly converts electrical energy into light energy. [0003] LED street lamps have the characteristics of energy saving and long life, avoiding the trouble of changing bulbs frequently, and are favored by more and more users. However, the heat dissipation and safety issues of LED street lamps are also key issues. The heat dissipation problem seriously affects the light efficiency and life of LED light sources. In order to improve safety, traditional LED street lights use radiators with small heat dissipation areas, or even do not use radiators, resulting in low heat dissipation efficiency of LED street lights, resulting in high temperature of LED light sources...

AI Technical Summary

Problems solved by technology

However, the heat dissipation and safety issues of LED street lamps are also key issues. The heat dissipation problem seriously affects the light efficiency and life of LED light sources.

In order to improve safety, traditional LED street lights use radiators with a small heat dissipation area, or even do not use radiators, resulting in low heat dissipation efficiency of LED street lights, resulting in high temperature of LED light sources, which affects the light efficiency and life of LED street lights

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