A look inside a 24 LED street light.

Yet another street light to take to bits. This time it's the bigger brother of the last one, with double the LED power and beam shaping lenses.
This light was donated for teardown by www.banggood.com and you can find it listed here:- http://bit.ly/1HVMS8B
There are a lot of things I like about this light. It has a good robust case with a glass front and thick seal. The LEDs are plain 1W beads on a well spread out mounting panel with plenty of heatsink compound between it and a chunky finned exterior heatsink. The temperature on the heatsink only rose about 20C above ambient, which is very good. The LEDs are also driven in a continuous series string at 300mA, which is preferable to the series/parallel arrays of the multi-chip array LEDs as it ensures that each LED is run at 300mA.
The lenses shape the light from a general wash into a long wide beam that is designed to illuminate roads or paths. If desired the lenses can be removed to give a wash of light. The central intensity with and without the lenses was comparable, with just a different beam shape.