LED fixture and LED lighting arrangement comprising such LED fixture

• US 10,237,952 B2
• Filed: 03/17/2017
• Issued: 03/19/2019
• Est. Priority Date: 09/10/2012
• Status: Active Grant

• Current Assignee: eldoLAB Holding B.V. (Acuity Brands, Inc.)
• Original Assignee: eldoLAB Holding B.V. (Acuity Brands, Inc.)
• Inventors: Saes, Marc, Welten, Petrus Johannes Maria
• Primary Examiner(s): Le, Don
• Application Number:
  US15/462,171
• Publication Number:
  US 20170339768A1
• Time in Patent Office: 732 Days
• Field of Search: 315129
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/24 using electrical feedback from LEDs or from LED modules
• CPC Class Codes: H05B 45/32 Pulse-control circuits
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 45/58 involving end of life detection of LEDs
• CPC Class Codes: H05B 47/18 via data-bus transmission

Abstract

An LED fixture includes at least one LED; an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to an LED driver, a storage device for storing data in relation to the LED, and a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED.

Claims

1. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED, and

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED;

wherein the data processing device is in a circuit connection with the LED for controlling a light output of the LED.

2. The LED lighting module according to claim 1, wherein the data processing device is electrically connected to the electrical power terminal and being arranged for communication with the driver module via the electrical power terminal.

3. The LED lighting module according to claim 1, wherein the data processing device is arranged for sending data to the LED driver module by:

detecting a LED driver module output voltage decrease; and

sending the data to the LED driver module by modulating an impedance of the electrical power terminal when an LED driver module output voltage decrease has been observed.

4. The LED lighting module according to claim 1, wherein the data processing device is arranged for receiving data from the LED driver module by:

detecting a magnitude of an LED driver module current as provided by the LED driver module;

comparing the magnitude of the detected LED driver module current with a value expressing a nominal LED driver module current; and

deriving a data bit from the detected LED driver module current substantially matching, subceeding or exceeding the nominal LED driver module current.

5. The LED lighting module according to claim 4, wherein the data processing device is arranged for determining the data bit value from whether or not the detected LED driver current exceeds the nominal LED driver module current.

6. The LED lighting module according to claim 4, wherein the data processing device is arranged for determining the data bit value from whether or not the detected LED driver module current substantially matches the nominal LED driver module current.

7. The LED lighting module according to claim 1, wherein the data processing device is arranged for receiving data from the LED driver module by:

detecting the LED driver module output voltage;

detecting if the LED driver module output voltage is in a voltage range above zero and below an LED forward ON voltage; and

comparing, when the LED driver module voltage has been detected to be in the voltage range, the LED driver module voltage to a threshold, and deriving a data bit from the exceeding or not exceeding of the threshold.

8. The LED lighting module according to claim 1, wherein the data processing device is arranged for receiving data from the LED driver module by:

detecting the LED driver module output voltage;

determining a polarity of the LED driver module output voltage; and

deriving data from the LED driver module output voltage if the polarity is inverse to a forward LED driving voltage.

9. The LED lighting module according to claim 1, further comprising a switch, connected in series with the LED, a control input of the switch being electrically connected to the data processing device for enabling the data processing device to control the switch.

10. The LED lighting module according to claim 1, wherein the data processing device is arranged for:

detecting an operating parameter of the LED;

comparing the detected operating parameter to a safe operating rating; and

disconnecting the LED from the electrical power terminal in case a safe operating rating is exceeded.

11. The LED lighting module according to claim 10, wherein the operating parameter comprises at least one of:

LED temperature, LED current, LED voltage, LED power, LED current as a function of temperature.

12. The LED lighting module according to claim 10, wherein the operating parameter comprises at least one of an accumulated number of power-ups, an occurrence of error conditions, an occurrence of LED driver module changes, the processing device being arranged for storing the operating parameter in the storage device.

13. The LED lighting module according to claim 1, wherein the data processing device is arranged for gathering and storing in the storage device at least one of LED operating voltage data, LED operating current data, LED operating temperature data, LED optical output data, LED position data, audio data, video data and for deriving a control signal from the stored data.

14. The LED lighting module according to claim 1, wherein the data processing device is arranged for controlling at least one of a LED intensity and LED color using the data stored in the storage device.

15. The LED lighting module according to claim 14, wherein the data processing device is arranged for controlling the LED intensity using the operating parameter as stored in the storage device, the operating parameter preferably comprising the accumulated operating time of the LED.

16. The LED lighting module according to claim 1, wherein the data processing device is arranged for detecting if an LED of the lighting module is defective, and for controlling the LED intensity on the basis thereof.

17. The LED fixture according to claim 1, wherein the data processing device is arranged for detecting if an LED of the lighting module is defective, and for de-activating the defective LED on the basis thereof.

18. The LED lighting module according to claim 1, wherein the data processing device is arranged to read from the memory device an identification of the LED lighting module, and to transmit the identification via at least one of the electrical power terminal and the LED.

19. The LED lighting module according to claim 18, wherein the identification comprises at least one of LED lighting module manufacturer identification, LED lighting module model name/type identification, LED lighting module serial number, LED lighting module configuration data.

20. The LED lighting module according to claim 1, wherein the data processing device is arranged for determining an accumulated operating time of the LED, detecting a dimming level of the LED and correcting the accumulated operating time for the dimming level.

21. The LED lighting module according to claim 1, wherein the data processing device is arranged for accumulating a number of LED current drive pulses provided to the LED, and for determining an accumulated operating time of the LED from the accumulated number of LED drive pulses.

22. The LED lighting module according to claim 20, wherein the data processing device is arranged for determining the accumulated operating time per LED group of the LED lighting module.

23. The LED lighting module according to claim 1, wherein the data processing device is arranged for sending data to the driver module in response to receiving from the driver module a polling signal.

24. The LED lighting module according to claim 23, wherein the data processing device is arranged for sending in response to receiving the polling signal, a response signal for indicating to the LED driver module that the LED lighting module has an event to report, the data processing device further being arranged to send data to the LED driver module concerning the event, in response to receiving from the LED driver module a message comprising an identifier of the LED lighting module.

25. The LED lighting module according to claim 23, wherein the data processing device is arranged to synchronize an operation of the LED lighting module with a rate of the polling signal received.

26. An LED lighting arrangement comprising:

an LED lighting module according to claim 1, and

an LED driver module for driving the LED lighting module.

27. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED,

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED,

wherein the data processing device is arranged to provide optical data transmission by the LED lighting module by;

sending an instruction signal via the electrical power terminal to the driver module, the instruction signal to make the driver module drive the LED accordingly to optically transmit the data.

28. An LED lighting arrangement comprising:

an LED lighting module according to claim 27, and

an LED driver module for driving the LED lighting module.

29. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED,

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED,

wherein the data processing device is arranged to provide optical data transmission by the LED lighting module by;

powering and depowering the LED from the electrical power terminal so as to make the LED optically transmit the data accordingly.

30. An LED lighting arrangement comprising:

an LED lighting module according to claim 29, and

an LED driver module for driving the LED lighting module.

31. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED,

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED, and

further comprising a photo amplifier having an output thereof electrically connected to an input of the data processing device.

32. The LED lighting module according to claim 31, wherein the photo amplifier is formed by the LED and an electronic amplifier having an input thereof connected to the LED, so as to use the LED as a photodiode.

33. An LED lighting arrangement comprising:

an LED lighting module according to claim 31, and

an LED driver module for driving the LED lighting module.

34. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED,

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED,

wherein the data processing device is arranged for activating the LED in case a predetermined operating condition is established.

35. An LED lighting arrangement comprising:

an LED lighting module according to claim 34, and

an LED driver module for driving the LED lighting module.

36. An LED lighting module comprising:

at least one LED;

the LED lighting module being configured to be connected to an LED driver module, the LED driver module comprising a converter for converting a power supply voltage into an LED driver module electrical output power for powering the at least one LED of the LED lighting module and a controller for controlling the converter,

wherein the LED lighting module is configured to be powered by the LED driver module and wherein the LED lighting module does not comprise a converter for powering the at least one LED,

wherein the LED lighting module further comprises;

an electrical power terminal, electrically connected to the LED, the electrical power terminal for electrically connecting the LED to the LED driver module to power the at least one LED from the LED driver module electrical output power as received from the LED driver module;

a storage device for storing data in relation to the LED; and

a data processing device, electrically connected to the storage device for storing data in the storage device and reading data therefrom, the data processing device being arranged and connected for providing data communication via at least one of the electrical power terminal and the LED,

wherein the data processing device is arranged for storing an accumulated operating time of the LED lighting module in the storage device, the data processing device being arranged for generating an end of life signal using the accumulated operating time.

37. The LED lighting module according to claim 36, wherein the data processing device is arranged for transmitting the end of life signal by activating the LED.

38. The LED lighting module according to claim 37, wherein the data processing device is arranged for:

connecting for a signaling time period by means of the switch the LED to a supply for generating a signaling optical pulse.

39. An LED lighting arrangement comprising:

an LED lighting module according to claim 36, and

an LED driver module for driving the LED lighting module.