Device for operating LEDs
First Claim
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1. A device for operating light emitting diodes (LEDs), comprisinga driver module (10), wherein the driver module comprises:
- a switching regulator, an active power factor correction circuit, potential isolation and/or an interface for user control andan LED module (11) having at least one LED, said LED module being driven by the driver module (10),wherein the LED module (11) is fed with a current by the driver module (10) via a first terminal (1), and a second terminal (2) is present, as a ground connection (GND),and the LED module (11) is connected to the driver module (10) via a third terminal (3), which is embodied as a data channel, wherein a voltage fed by the driver module (10) is present on the data channel, wherein the LED module (11) is designed to short circuit the voltage at the data channel (3) for the transmission of information and wherein the information transmitted by the LED module (11) contains an indication about a parameter of the LED module (11) or the status of the LED module (11);
and wherein the driver module (10) feeds the data channel (3) with a voltage only after switch-on of the LED module (11) to read out information from the LED module (11) via the data channel (3) within a start phase, and, after the start phase has elapsed or after the information has been read-out, the voltage at the third terminal (3) is switched off thereby deactivating the data channel (3);
or the data channel (3) is repeatedly reactivated momentarily after a specific time period in order to again read-out information from the LED module (11).
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Abstract
The invention relates to a device for operating LEDs, comprising a driver module and an LED module (11), which is controlled by the driver module (10) and has at least one LED. The LED module (11) is fed a current by the driver module (10) via a first connection (1), and a second connection (2) is present, preferably as a ground connection (GND). The device is characterized in that the LED module (11) is connected to the driver module (10) by means of a third connection (3), which is designed as a data channel, a voltage fed by the driver module (10) being applied to the data channel.
16 Citations
23 Claims
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1. A device for operating light emitting diodes (LEDs), comprising
a driver module (10), wherein the driver module comprises: - a switching regulator, an active power factor correction circuit, potential isolation and/or an interface for user control and
an LED module (11) having at least one LED, said LED module being driven by the driver module (10), wherein the LED module (11) is fed with a current by the driver module (10) via a first terminal (1), and a second terminal (2) is present, as a ground connection (GND), and the LED module (11) is connected to the driver module (10) via a third terminal (3), which is embodied as a data channel, wherein a voltage fed by the driver module (10) is present on the data channel, wherein the LED module (11) is designed to short circuit the voltage at the data channel (3) for the transmission of information and wherein the information transmitted by the LED module (11) contains an indication about a parameter of the LED module (11) or the status of the LED module (11); and wherein the driver module (10) feeds the data channel (3) with a voltage only after switch-on of the LED module (11) to read out information from the LED module (11) via the data channel (3) within a start phase, and, after the start phase has elapsed or after the information has been read-out, the voltage at the third terminal (3) is switched off thereby deactivating the data channel (3);
or the data channel (3) is repeatedly reactivated momentarily after a specific time period in order to again read-out information from the LED module (11). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- a switching regulator, an active power factor correction circuit, potential isolation and/or an interface for user control and
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21. A method for operating LEDs, wherein an LED module (11) having at least one LED is driven by a driver module (10), and a data channel for transferring information about the LED module (11) is present, wherein the driver module (10) comprises:
- a switching regulator, an active power factor correction circuit, potential isolation and/or an interface for user control; and
wherein the LED module (11) is fed with a current by the driver module (10) via a first terminal (1), and a second terminal (2) is present, as a ground connection (GND); and
the LED module (11) is connected to the driver module (10) via a third terminal (3), which is embodied as a data channel, wherein a voltage fed by the driver module (10) is present on the data channel,the method comprising; feeding the data channel, permanently, with a voltage by the driver module (10) and using the LED module (11) to change, by short circuiting or reducing by loading, the voltage at the data channel for the transmission of information, wherein the information transmitted by the LED module (11) contains an indication about a parameter of the LED module (11) or the status of the LED module (11); and
wherein the driver module (10) feeds the data channel (3) with a voltage only after switch-on of the LED module (11) to read out information from the LED module (11) via the data channel (3) within a start phase, and, after the start phase has elapsed or after the information has been read-out, the voltage at the third terminal (3) is switched off thereby deactivating the data channel (3);
or the data channel (3) is repeatedly reactivated momentarily after a specific time period in order to again read-out information from the LED module (11). - View Dependent Claims (22, 23)
- a switching regulator, an active power factor correction circuit, potential isolation and/or an interface for user control; and
Specification