Radiator of LED (light emitting diode)

Abstract

The invention discloses a radiator of an LED (light emitting diode). The radiator comprises a heat sink and a rib, wherein the heat sink is of a hollow cylindrical structure; the rib is arranged on the outer side wall of the heat sink; the heat sink and the rib are integrated structurally; the rib is arranged longitudinally along a sink cylinder; the length of the rib is greater than the height of the heat sink cylinder; and the end surface of the rib exposed to the heat sink is also provided with a radiating fan. The back part of the heat sink of the radiator for the LED is difficult to collect dust, and the radiation efficiency is improved effectively.

Description

Technical field: [0001] The invention relates to a light-emitting diode (LED) radiator. Background technique: [0002] When semiconductor lighting enters the field of practical high-power lighting fixtures, the biggest constraint is conduction and heat dissipation. At present, in order to meet the lighting design requirements of semiconductor lighting lamps, multiple high-power chips must be installed in the lamp body. Sometimes multiple light sources are set in a lamp, and each single light source is packaged by multiple high-power chips. The problem caused by multiple high-power chip structures is that the junction temperature of the LED rises, which affects the luminous rate and life of the LED, and even burns the LED chip. Prior art heat sinks include heat sinks and fins. Both the heat sink and the spine of the airfoil are planar. In actual use, the substrate on which the LED chip is installed is fixed on the belly of the radiator, and the ridge of the radiator is pa...

AI Technical Summary

Problems solved by technology

The heat sink with this structure accumulates dust very much on the ridge, especially the ridge of the heat sink is more likely to accumulate dust

Accumulated dust hinders the heat exchange between the radiator and the air, affecting heat dissipation

In open spaces (such as street lamps, square lighting fixtures, etc.), especially in the environment with a lot of sand and dust in the north, the surface of the radiator is very dusty, which leads to a sharp drop in the efficiency of the radiator, heat accumulation of LED chips, temperature rise, and light decay. , which greatly shortens the service life of the LED

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