Abstract: A bicycle light has in one embodiment a mounting base to connect to the bicycle, and an LED light unit for insertion into and removal from the base. The light unit includes a printed circuit board with LED driver and a rechargeable battery, all of which are encapsulated by a direct overmolding that forms a casing for the unit. For charging the light unit is pulled out from the base and plugged into a USB port via an extending USB blade. A motion detector on the PCB shuts off the LED if no motion is detected for several minutes, thus eliminating need for any exterior switch. Another embodiment is without the USB blade, with the battery charged by inductive charging.

Abstract: An LED array and driver design minimizes space requirements and simplifies assembly, while reducing costs. A printed circuit board with LED driver electronics has a central opening through which the LED array is mounted. In one form the LED array is a chip on board (COB) array, the array being circular and fitting closely within the central opening of the PCB. Four integral leaf springs are formed into the flat PCB, in position to push the LED array down when the PCB and LED array are attached against the heat sink. Two of the springs have electrical contacts that make contact with those of the LED array. With the LED array and driver circuit on the face of a light assembly, the space rear of the driver circuit is free to be open to air flow for cooling.

Abstract: An LED array and driver design minimizes space requirements and simplifies assembly, while reducing costs. A printed circuit board with LED driver electronics has a central opening through which the LED array is mounted. In one form the LED array is a chip on board (COB) array, the array being circular and fitting closely within the central opening of the PCB. Four integral leaf springs are formed into the flat PCB, in position to push the LED array down when the PCB and LED array are attached against the heat sink. Two of the springs have electrical contacts that make contact with those of the LED array. With the LED array and driver circuit on the face of a light assembly, the space rear of the driver circuit is free to be open to air flow for cooling.

Abstract: A portable LED light has a series of different LED heads, with different light characteristics, for connection to a lighting device body that includes a battery and LED driver electronics. Each of the different light heads can have specific light color temperatures, maximum intensities and other features. A heat sink with cooling fins dissipates heat from the LEDs, and a fan can be included, either on the housing or on a light head. An alternative light head can be for underwater use, with the internal LEDs and electronics of the light head, as well as the body, being water sealed. Cooling of the underwater form of light is by direct contact of a heat sink with surrounding water.

Abstract: A portable LED light has a series of different LED heads, with different light characteristics, for connection to a lighting device body that includes a battery and LED driver electronics. Each of the different light heads can have specific light color temperatures, maximum intensities and other features. A heat sink with cooling fins dissipates heat from the LEDs, and a fan can be included, either on the housing or on a light head. An alternative light head can be for underwater use, with the internal LEDs and electronics of the light head, as well as the body, being water sealed. Cooling of the underwater form of light is by direct contact of a heat sink with surrounding water.