LED street lamp

Abstract

The invention belongs to the technical field of street lamps, and relates to an LED street lamp; an LED street lamp unit is internally provided with an independent drive and has a tubular power supply; street lamps with different power are assembled according to the combined need of the design of whole lamp so as to meet design requirements. According to the illuminating brightness and light spot needs, units with corresponding quantity and length can be selected and combine brackets which can lead each unit to rotate freely and can be fixed tightly at proper angle, so as to combine the whole street lamps with various specifications. The invention has the advantages that the LED street lamp units adopt structure with independent power supply, independent radiating fins and independent sealing, so that the light distribution angle can be adjusted, the power can combine freely, the radiating area is large, the service life is long; and the arrangement of a special air hole can balance the pressure difference in the lamp tube, thus preventing the lamp tube from broken due to expansion on heating and contraction on cooling.

Description

Technical field: [0001] The invention relates to the technical field of street lamps, in particular to an LED street lamp. Background technique: [0002] Due to the fact that LEDs generate less heat during work, have higher luminous efficiency, and have the characteristics of high efficiency, low consumption, energy saving, environmental protection, and long life, they are more and more valued by countries all over the world. At present, the electricity used for street lighting in my country is close to 250 billion kWh every year. If 1 / 3 of them can be illuminated by LED street lighting, about 80 billion kWh of electricity can be saved every year, which is basically equivalent to the annual power generation of the Three Gorges Power Station. [0003] see figure 1 The structure of the common LED street lamp unit is: the front of the substrate 4 is provided with an LED lamp 6, the back is provided with a heat sink 3, the front is covered with a transparent cover 2, and the re...

AI Technical Summary

Problems solved by technology

[0005] Traditional heat sinks are generally made of aluminum die-casting, and the mold making alone is not a small investment, and the weight of aluminum die-casting heat sinks is very large, and it is difficult to meet the relevant weight standards

[0006] Traditional LED street lights still have a fixed light distribution angle, and it is difficult for the light spots projected on the road to meet the relevant light spot standards, and it is impossible to make different adjustments according to different road conditions.

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