Spot/Flood Light with LEDS

摘要

A low voltage spot light for use as substitute for a mains voltage PAR38 reflector lamp which comprises a chamber for LED dusters with reflectors and an enclosure for an electronic power supply to step down the incoming mains voltage. The LED clusters are mounted in the central area of the heat sink within the chamber and are accessible via a removable window. The LED chamber is weatherproof ventilated to prevent condensation. The spotlight is designed for outdoor use in conjunction with the PAR38 style weather proof lamp holder but can be operated indoors from any standard E 27 lamp holder.

主权项

1. A spotlight for outdoor use, the spotlight comprising:
a base having an electrical contact area at a proximal side of the housing, the electrical contact being configured for connecting to an electrical socket; a weatherproof housing joined to a distal side of the base and shaped for sealing engagement with a mains voltage outdoor lamp holder to protect the electrical contact area of the base and the socket from contamination; a step-down device for reducing an incoming mains voltage to an LED voltage, the step-down device being contained in the housing and protected against weather by the weatherproof housing; an LED chamber having a proximal side thereof facing a distal side of the housing, the LED chamber containing one or more LEDs powered by the LED voltage, spacers extending from the housing to the LED chamber, so as to define an air gap separating the housing from the LED chamber, the air gap allowing free-flowing ambient cooling air to flow between the step-down device and the LED chamber, the spacers being integral with a lid of the housing located over the step-down device and facing the proximal side of the LED chamber and containing passages which provide paths for electrical leads from the step-down device to the one or more LEDs; and one or more heat-sink elements in contact with the LED chamber and the air gap, the heat sink being configured for conducting heat away from the one or more LEDs to air flowing over exposed surfaces of the heat sink; wherein the distal and proximal sides of the air gap are flat so as to ensure drainage of the air gap.