Lamp control unit, lighting device and lighting system
AssigneeTridonic GmbH & Co KG
InventorsRonnie Li, Markus Kuenzli, Tjaco Middel
Life of this patent
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Abstract
A control device comprising at least one input connector (x1, x2) configured to electrically connect an operating device (1) for driving lighting means (3a, 3b), and at least one output connector (x3, x4, x5) configured to electrically connect at least one of the lighting means (3a, 3b), a control means (4) configured to switch the lighting means (3a, 3b) based on a control signal, and a circuit (5) configured to generate voltage for supplying the control means (4) from a constant current that is generated from the operating device (1) for driving the lighting means (3a, 3b).
Claims10
A lighting system comprising:
- light emitting diodes, wherein a first part of the lighting emitting diodes is assigned to indirect lighting and a second part of the lighting emitting diodes is assigned to direct lighting for a given area;
- an LED operating device that includes an isolated safety extra low voltage (SELV) converter and is configured to be electrically connected to mains power and to output safety extra low voltage (SELV) DC power at a constant current through a conductor to drive the light emitting diodes which are physically separated from the operating device and located remotely from the operating device;
- a sensor detecting the presence of a person in the given area for direct lighting;
- and
- a supplemental control device including:
- at least one input connector configured to be electrically connected to receive safety extra low voltage DC power from the conductor connected to the operating device, and connected electrically between the operating device and the light emitting diodes;
- at least two output connectors configured to be electrically connected to the light emitting diodes;
- wherein a first output connector of said pair is configured to be connected electrically before the second part of the lighting emitting diodes and a second output connector of said pair is configured to be connected electrically after the second part of the lighting emitting diodes;
- at least one switch disposed electrically between said pair of the output connectors in order to provide a short circuit between the pair of output connectors when the switch is closed;
- a control circuit configured to operate the switch based on a control signal from the sensor detecting the presence of a person in the given area for direct lighting;
- and
- a power supply circuit electrically connected to the at least one input connector and configured to generate a voltage to supply the control circuit from the constant current SELV DC power that is output by the operating device for driving the lighting emitting diodes;
- wherein the control circuit is configured to control the switch to illuminate the light emitting diodes assigned to direct lighting of the given area based on the control signal from the sensor detecting the presence of a person in the given area.
Dependencies are inferred from the claim text.