Compact Multi-Function LED Lighthead

摘要

A multifunction lighthead for mounting to a vehicle includes several groups of LEDs arranged to provide distinct light emission patterns. Each group of LEDs and associated optics are selected and positioned to produce light emission patterns needed to meet lighting standards applicable to the vehicle. Such standards may require wide angle light emission, which is enhanced by supporting groups of LEDs that project away from the vehicle body, enhancing visibility of the lighthead from directions close to a plane defined by the body panel. The projecting support for the LEDs and optics for a wide angle light emission pattern may be employed to support LEDs arranged for ground illumination. Other groups of LEDs in the same lighthead may be arranged with optics to provide area illumination in support of arrest, search, triage or other emergency functions.

主权项

1. A lighthead for affixing to a mounting point on a vehicle, the mounting point in a first plane, said lighthead comprising:
a support projecting away from the first plane in a first direction and including at least one support surface not parallel with the first plane; at least one first PC board mounted to said at least one support surface; a first plurality of LEDs mounted to said at least one first PC board, said first plurality of LEDs having optical axes in a second plane perpendicular to the first plane and said first plurality of LEDs combining to emit a continuous band of light being visible over an arc of at least 90°; a second PC board extending perpendicular to the first plane on one side of the second plane; a second plurality of LEDs mounted to said second PC board, said second plurality of LEDs emitting light to one side of and away from the second plane; and a light transmissive lens enclosing said first and second PC boards.