A lamp control device comprises a first input terminal, a second input terminal, an output terminal that is configured to be connectable to a lamp via an external switch and outputs a drive current for the lamp, an internal switch provided on a first path connecting the first input terminal and the output terminal, a constant current section provided on a second path connecting the second input terminal and the output terminal, a voltage monitoring section that monitors a voltage applied to the output terminal, and a control section that controls the internal switch on the basis of a monitoring result from the voltage monitoring section.

An electronic device for an automotive lighting device, including a driver and a mixer. The driver includes a power and signal input and has a supply voltage threshold, in such a way that the microcontroller is configured to reset if the voltage value in the power and signal input is lower than the supply voltage threshold. The mixer includes an output connected to the power and signal input of the driver, and is configured to provide an output signal which is related to the highest between the non-permanent signal and the permanent signal inputs.

A lamp control device comprises a first input terminal, a second input terminal, an output terminal that is configured to be connectable to a lamp via an external switch and outputs a drive current for the lamp, an internal switch provided on a first path connecting the first input terminal and the output terminal, a constant current section provided on a second path connecting the second input terminal and the output terminal, a voltage monitoring section that monitors a voltage applied to the output terminal, and a control section that controls the internal switch on the basis of a monitoring result from the voltage monitoring section.

The auxiliary turn light for a tractor-trailer is an illumination system. The tractor-trailer further comprises a left turn control signal and a right turn control signal. The left turn control signal and the right turn control signal generates an electrical signal that operates the left turn signal and the right turn signal respectively. The auxiliary turn light for a tractor-trailer comprises a left illumination circuit and a right illumination circuit. The left illumination circuit operates a left lamp that generates a field of illumination on the left side of the tractor. The right illumination circuit operates a right lamp that generates a field of illumination on the right side of the tractor. The operation of the left illumination circuit is initiated by the left turn control signal. The operation of the right illumination circuit is initiated by the right turn control signal.

A lamp includes a plurality of semiconductor light-emitting elements arrayed linearly, an aluminum substrate on which the plurality of light-emitting elements are mounted, and a linear light wavelength conversion member disposed separated from light-emitting surfaces of the plurality of light-emitting elements. The aluminum substrate includes a circuit formed such as to be able to switch on/off the plurality of light-emitting elements, as grouped into a plurality of sets, on a per-set basis in which the sets are composed of either one or a plurality of the light-emitting elements.

A vehicle illumination system and method for controlling a vehicle light. The method includes receiving an input signal at a controller port; generating a control signal to activate the vehicle light based on both a rising and falling edge of the input signal in which the control signal activates an animation sequence when a falling edge is detected.

Provided is a charge pump including a flying capacitor, an output capacitor, a switch group arranged to switch connection states of the capacitors so as to generate an output voltage from an input voltage, and a feedback control unit arranged to adjust an interterminal voltage of the flying capacitor to a predetermined target value when charging the same. On the basis of a first node voltage applied to a first terminal of the flying capacitor, the feedback control unit adjusts a second node voltage at a second terminal of the flying capacitor. The feedback control unit includes a voltage detection unit arranged to detect the interterminal voltage of the flying capacitor, and a voltage adjustment unit arranged to adjust the second node voltage according to a result of detection by the voltage detection unit.

A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.

A light source lighting circuit comprises a first lighting circuit for receiving current from the electric power supply line and supplying drive current to a first light source and a second lighting circuit for receiving the current from the electric power supply line and supplying drive current to a second light source. When a state of the drive current flowing to the first light source shows an abnormality, or when state of the drive current flowing to the second light source shows an abnormality, the first lighting circuit stops operation. When a state of the drive current flowing to the second light source shows an abnormality, or when a state of the drive current flowing to the first light source shows an abnormality, the second lighting circuit stops operation.

A vehicle illumination apparatus is disclosed. The apparatus comprises at least one light generating layer configured to conform to an outer surface of a panel of the vehicle. The light generating layer comprises a plurality of electrodes having a plurality of LEDs in a semiconductor ink disposed therebetween. The plurality of LEDs is operable to emit a first emission. The apparatus further comprises a controller configured to selectively activate the plurality of LEDs in response to a navigational direction of the vehicle.