Abstract: Disclosed is a light bar having improved weather resistance, aerodynamics, antenna performance, and platform versatility by accommodating user-selectable antenna modules.

Abstract: An array (166, 184, 194, 230, 256) of multiple light heads (170, 186, 194, 236) for a vehicle (100) has a primary Controller Area Network (CAN) serial data bus (108, 224) to carry first serial communications among spaced-apart CAN nodes (112, 118, 130, 136, 140, 154, 220, 260, 288) communicatively coupled thereto. The first serial communications initiate a flash sequence from the array via second serial communications provided to the multiple light heads communicatively coupled to a nested CAN serial data bus (180, 190, 200, 238). An array controller (130, 136, 140, 220, 260) segregates the nested CAN serial data bus from the primary CAN serial data bus while providing a communications bridge between nodes of the two buses. Accordingly, light heads on the nested bus provide self-identification and diagnostic information to other nodes such as a computer (288) configuration utility (290) featuring a graphical user interface (292).

Abstract: In connection with a ground transportation vehicle light head (86) powered by a battery-based voltage source (20) supplying positive (76) and reference (i.e., ground) (78) voltages that define a voltage difference (22) applied across a number of multiple series-connected high-power light-emitting diodes (HP LEDs) (12) and current regulator circuitry (80) electrically connected to them, ultra-low dropout circuit techniques are disclosed for increasing a portion of the voltage difference available from the battery-based voltage source to forward bias and thereby maximize the number of the multiple series-connected HP LEDs emitting light by maintaining a low voltage drop (82) across the current regulator circuitry.

Abstract: Disclosed are techniques for installing an exterior-mounted light bar accessory underneath a factory-installed rear spoiler on a liftgate of a vehicle while leaving intact the rear spoiler and a liftgate spoiler sealing system fitted and mounting components used during factory installation of the rear spoiler by attachment to the liftgate, the liftgate having a top side margin and the vehicle having a roof with a rear end, the rear spoiler mounted at the top side margin of the liftgate and at the rear end of the roof, and the liftgate having an outer surface with first and second curved distal ends.

Abstract: A light head includes a heat sink, a circuit board in heat transfer communication with the heat sink, a light source mounted on the circuit board such that heat generated by the light source when energized is transferred to via the circuit board to the heat sink, a collimating base having a cavity for receiving the light source, and a collimating lens structure on the outer surface of the base projecting outward from the outer surface of the base for transmitting substantially collimated light from the base. A light bar including one or more such light heads is also described.

Abstract: A signal lighting beacon for a vehicle has a base and a plurality of LED arrays mounted on the base. the LED arrays are arranged to direct light signals outward in multiple different radial directions. Each LED array has an LED array circuit board having plurality of LEDs and an electrical connector mounted thereon. A common circuit board is connected to each of the plurality of LED arrays by electrical connectors on the common circuit board. The electrical connectors of single-sided LED circuit boards can be substantially identical to the electrical connectors on a single-sided common circuit board disposed at an angle relative to the LED circuit boards. The connectors can be connected to one another by inserting spade terminals into corresponding sockets from the sides of the sockets. The LED arrays can be pivoted relative to the common circuit board without withdrawing the spade terminals from the sockets.

Abstract: A signal lighting system for a vehicle includes a housing having an open front end. A bottom and top of the housing each have an arcuate front edge. The bottom extends farther forward than the top so the front edge of the bottom is in front of the front edge of the top. The system includes a plurality of lights between the bottom and top and positioned for directing light generally forward. Gaskets are at the front edges of the top and bottom of the housing for conforming the lighting system to a windshield of the vehicle. The lighting system is adjustable to facilitate mounting the lighting system in a wide range of different makes and models of vehicle notwithstanding differences that may exist between their windshield geometries. The lights may be included in light modules that can be rotationally adjusted while the system is mounted on the vehicle.

Abstract: A bezel for a light fixture appears illuminated when a bezel light source is energized and the bezel appears opaque when the bezel lights source is not energized. The bezel has a metalized coating which reflects light transmitted from a location remote from and external to the bezel and which transmits light emitted by the bezel light source.

Abstract: A light fixture includes a light source and inner and outer trough reflectors. The inner and outer trough reflectors may have coaxial imaginary linear focal axes. Each of the inner and outer trough reflectors may be configured to collimate light emitted from the light source.

Abstract: A wireless interface module is used with at least one of a light bar, a control head, and/or a siren so that a mobile device can wirelessly control the light bar and/or siren via a user interface.

Abstract: A signal lighting system for a vehicle includes a housing having an open front end. A bottom and top of the housing each have an arcuate front edge. The bottom extends farther forward than the top so the front edge of the bottom is in front of the front edge of the top. The system includes a plurality of lights between the bottom and top and positioned for directing light generally forward. Gaskets are at the front edges of the top and bottom of the housing for conforming the lighting system to a windshield of the vehicle. The lighting system is adjustable to facilitate mounting the lighting system in a wide range of different makes and models of vehicle notwithstanding differences that may exist between their windshield geometries. The lights may be included in light modules that can be rotationally adjusted while the system is mounted on the vehicle.

Abstract: A light head includes a heat sink, a circuit board in heat transfer communication with the heat sink, a light source mounted on the circuit board such that heat generated by the light source when energized is transferred to via the circuit board to the heat sink, a collimating base having a cavity for receiving the light source, and a collimating lens structure on the outer surface of the base projecting outward from the outer surface of the base for transmitting substantially collimated light from the base. A light bar including one or more such light heads is also described.

Abstract: A touch pad sensor is configured for use by an operator to detect gestures of the operator and for providing a gesture signal indicative of a detected gesture. The detected gesture corresponds to a mode of operation of an electronic safety device. A controller detects the gesture signals indicative of the detected gesture, and converts the gesture signals into control signals to control the operation of the electronic safety device such as lighting or audio devices.

Abstract: A signal lighting beacon for a vehicle has a base and a plurality of LED arrays mounted on the base. the LED arrays are arranged to direct light signals outward in multiple different radial directions. Each LED array has an LED array circuit board having plurality of LEDs and an electrical connector mounted thereon. A common circuit board is connected to each of the plurality of LED arrays by electrical connectors on the common circuit board. The electrical connectors of single-sided LED circuit boards can be substantially identical to the electrical connectors on a single-sided common circuit board disposed at an angle relative to the LED circuit boards. The connectors can be connected to one another by inserting spade terminals into corresponding sockets from the sides of the sockets. The LED arrays can be pivoted relative to the common circuit board without withdrawing the spade terminals from the sockets.

Abstract: A system comprising a power supply, an emergency warning light and a speaker, in combination with a control head. One or more processors controls operation of the system in response to received user input and provides system status for display. Storage media encoded with emergency warning light system instructions for execution by one or more of the processors controls the actuation of the emergency warning light system and controls light patterns generated by the emergency warning light system. The storage media is further encoded with siren system instructions for execution by one or more of the processors for controlling the actuation of the siren system and for controlling audible sounds generated by the siren system.

Abstract: A beacon configured for mounting on a vehicle having an array of LEDs providing a flashing light signal to observers and having an array of LEDs providing scene illumination to a portion of the vehicle.