Replaceable LED street lamp module

摘要

The invention discloses a replaceable LED street lamp module, including at least one module portion and a clamping sheet set. The module portion includes an LED module, a lens, an inner radiator, an outer radiator and a heat pipe set, the inner radiator and the outer radiator are sleeved with each other, the heat pipe set is bent and located between the inner radiator and the outer radiator and supports and fixes the LED module, the lens protects the LED module and allows light to be emitted from the LED module, notches are arranged on the outer circle of the outer radiator, and the clamping sheet set is clamped in the notch via two clamping sheets in order to clamp and fix the module portion, thereby being assembled on the opening of the street lamp housing.

主权项

1. A replaceable LED street lamp module, comprising at least one module portion and a clamping sheet set;
the module portion comprising:
an LED module, formed by encapsulating plural LED chips in an aluminum nitride ceramic substrate;a lens, serving as the secondary optics of an LED light source and protecting the LED module;an inner radiator, comprising an inner cylinder and an outer cylinder that are concentric and are sleeved with each other, a plurality of fins being connected between the inner cylinder and the outer cylinder, and an airflow channel formed between the adjacent fins that can produce a chimney effect by a received heat energy;an outer radiator comprising a through hole, and a plurality of radiating fins being formed on the periphery of the through hole in an axial direction, the outer radiator being sleeved outside the inner radiator via the through hole, a circle of notches pitching into the radiating fins being arranged on the periphery of the plural radiating fins;a heat pipe set, consisting of a plurality of U-shaped bent heat pipes, wherein U-shaped middle sections of the heat pipes are spliced to form a flat face in order to support and fix the LED module, U-shaped ends of the heat pipes are sleeved outside the inner radiator and fit between an outer wall of the outer cylinder of the inner radiator and an inner wall of the through hole of the outer radiator; the clamping sheet set comprising at least two clamping sheets, wherein inner edges of the at least two clamping sheets are clamped in the notches of the radiating fins, thereby clamping and fixing at least one module portion, and outer edges of the at least two clamping sheets serve as fixing portions used for locking and fixing a street lamp housing; wherein the total radiation power of the heat pipe set is larger than or equal to the power to be radiated by the LED module; wherein the heat conduction path is as follows; the LED module directly transfers heat to the aluminum nitride ceramic substrate, then directly to the heat pipes, then to the inner radiator, and then lastly to the outer radiator, wherein the aluminum nitride ceramic substrate and the heat pipes are heat conduction media with low thermal resistance.