Radiating LED (Light Emitting Diode) module and LED down lamp

Abstract

The invention relates to the technical field of LED (Light Emitting DeviceDiode) lighting lamps and, in particularly relates to a radiating LED module and an LED down lamp. A radiator of the radiating LED module is provided with an internally closed type convection radiating channel and an open type external convection radiating channel, and the internally closed type convection radiating channel is communicated with a module lens through hole and an aluminum substrate through hole in an optical engine. With the radiator in the structure, the radiating effect of the LED module is enhanced, the self weight is reduced, and the cost on materials for manufacturing the radiator is lowered. The radiating LED module is directly arranged between a power supply module and a lamp shade, an annular hole is formed between an upper opening of the lamp shade and the optical engine, and the annular hole is communicated with the open type external convection radiating channel. Heat produced by the circumferential part of the optical engine enters the open type external convection radiating channel through the annular hole and is directly convected to the air. Through internal and external convection radiation, the radiating balance and the radiating efficiency are largely improved, and a heat island effect produced by partial overheating is avoided.

Description

technical field [0001] The invention relates to the technical field of LED lighting fixtures, in particular to a heat dissipation LED module and an LED downlight. Background technique [0002] With the continuous development of lighting technology, various lamps are constantly being introduced. LED downlights have been widely used in many occasions due to their advantages of energy saving and environmental protection. However, how to better dissipate heat from LED downlights has become a difficult point in LED downlight lighting technology. [0003] In the prior art, a single heat sink or a heat sink plus a fan are used in the LED downlights of the prior art. The heat sink plus the fan will increase the cost and require additional power supply. However, the existing single heat sink usually adopts heat conduction and heat dissipation, and enhances heat dissipation by increasing the contact area between the heat sink and the external air. However, this heat dissipation meth...

AI Technical Summary

Problems solved by technology

However, this heat dissipation method cannot solve the heat island effect of local heat dissipation and high temperature in contact with the heat source, which may easily cause poor heat dissipation

Also have the structure that adopts convection heat dissipation to dissipate heat through air convection, but the radiator of existing convection heat dissipation structure adopts several closed heat dissipation channels, and the heat needs to be dissipated outward through the shell of the radiator, and the heat is easy to gather in the closed heat dissipation area. It is difficult to quickly dissipate into the air in the channel

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