High heat dissipation and energy saving led street light

Abstract

The invention provides an energy-saving LED street lamp with high heat dissipation efficiency, comprising a lamp post, wherein a chute extending along the lamp post is formed in the lamp post; a metal sliding block dragged by a stepping motor is arranged in the chute in a matched way; an LED lamp seat is fixed above the metal sliding block; the metal sliding block is in heat conducting contact with a heat dissipation part of the LED lamp seat; the LED lamp seat can produce vertically upward light; a temperature sensor is arranged on the heat dissipation part of the LED lamp seat; the stepping motor drags the metal sliding block according to the following manner: when the temperature of the heat dissipation part of the LED lamp seat is higher than a set value, the metal sliding block slides upwards for a certain distance along the chute, and when sliding to the upmost end of the chute, the metal sliding block slides downwards to the bottommost end of the chute; an arc-shaped reflection board is arranged at the upper end of the lamp post; and the arc-shaped reflection board reflects light vertically projected upwards by the LED lamp seat to the road surface. The LED street lamp can keep an LED wafer at low temperature all the time, so as to sufficiently improve the energy-saving effect.

Description

technical field [0001] The invention relates to the field of lamps, in particular to an LED street lamp. Background technique [0002] Due to the obvious energy-saving effect of LED, it has been widely popularized and applied; however, because the diode chip is a semiconductor, its luminous efficiency is very sensitive to temperature, and as the temperature increases, the luminous efficiency of LED decreases rapidly; It needs to be equipped with a huge metal heat sink. It can be considered that, under other conditions being roughly the same, the better the heat dissipation performance, the higher the luminous efficiency of the LED. On the other hand, for the current street lamps, since they need to be illuminated for a long time, it is more necessary to consider their heat dissipation performance. However, the radiator volume of the current LED street lamps is limited, and the heat dissipation capacity cannot be fully improved, and the energy-saving effect is limited. Con...

AI Technical Summary

Problems solved by technology

On the other hand, for the current street lamps, since they need to be illuminated for a long time, it is more necessary to consider their heat dissipation performance. However, the radiator volume of the current LED street lamps is limited, and the heat dissipation capacity cannot be fully improved, and the energy-saving effect is limited.

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