Assembly with control gear for lamps

1. An assembly comprising lamps ( 2 ), control gear ( 1 ) for the lamps ( 2 ) and an electric circuit ( 3 ), wherein the control gear ( 1 ) comprises at least one energy transmission element ( 7 , 37 ) comprising a core, a primary-side input coil and at least one secondary-side output coil, where the primary-side input coil transmits power to the at least one secondary-side output coil through the core, and wherein the electric circuit ( 3 ) comprises:

an inductive coupling element ( 9 , 39 ), which is disposed in a magnetic or electromagnetic stray field of the primary-side input coil of the energy transmission element ( 7 , 37 ) to receive low level power from the primary-side input coil in the stray field when the control gear is transmitting power through the core and the at least one secondary-side output coil to power the lamps;

voltage supply circuit ( 10 , 11 ) configured to generate a low level supply voltage for the electric circuit ( 3 ) from energy absorbed from the stray field;

a motion or brightness sensor that provides data to control the operation of the lamps;

a controller;

a switch in the electric circuit that modifies the load from the primary-side input coil through the stray field only to the inductive coupling element of the electric circuit when activated, wherein the controller emits a signal to pulse the switch and modulate the load to the inductive coupling element and the controller is configured to communicate with the control gear by modulating the load to the inductive coupling element from the primary-side input coil through the stray field only in order to transmit sensor data from the sensor to the control gear.

2. The assembly according to claim 1 , wherein the electric circuit ( 3 ) further comprises a resistor connected between the inductive coupling element and a first side of the switch wherein a second side of the switch is connected to ground.

3. The assembly according to claim 1 wherein the electric circuit ( 3 ) comprises a rectifier and a capacitor ( 11 ) located between the inductive coupling element and the controller.

4. The assembly according to claim 2 wherein the energy transmission element ( 7 , 37 ) is activated in a pulsed operating mode.

5. The assembly according to claim 1 wherein the control gear is integrated in an LED module ( 31 ).

6. An assembly comprising lamps ( 2 ), control gear ( 1 ) for the lamps ( 2 ) and an electric circuit ( 3 ) for a motion or brightness sensor, wherein:

the control gear ( 1 ) comprises an energy transmission element ( 7 , 37 ) comprising a primary-side input coil and at least one secondary-side output coil, and a first housing with a housing lid in which at least the energy transmission element is contained; and

the electric circuit ( 3 ) comprises a main assembly on a printed circuit board, the motion or brightness sensor, sensor lines connecting the sensor to the main assembly and a second housing for the main assembly of the electric circuit, and the main assembly of the electric circuit ( 3 ) on the printed circuit board comprises an inductive coupling element ( 9 , 39 ) which is disposed in a magnetic or electromagnetic stray field of the primary-side input coil of the energy transmission element ( 7 , 37 ) to receive low level power form the primary-side input coil in the stray field, voltage supply circuit ( 10 , 11 ) configured to generate a low level supply voltage for the electric circuit ( 3 ) from energy absorbed from the stray field, a controller, and a switch that modifies the load to the inductive coupling element of the electric circuit when activated, wherein the controller emits a signal to pulse the switch and modulate the load to the inductive coupling element and the controller is further configured to communicate with the control gear by modulating the load to the inductive coupling element from the primary-side input coil through the stray field in order to transmit sensor data from the sensor to the control gear; and

further wherein the electric circuit ( 3 ) comprises a second housing in which the components of the main assembly of the electric circuit on the printed circuit board are contained, the second housing being connected to the housing lid so that the inductive coupling element ( 9 ) of the electric circuit ( 3 ) is disposed on or near the housing lid ( 24 ) of the first housing and is located within the stray power field of the primary-side input coil of the control gear contain in the first housing ( 23 ).