Integrated LED and sensor device

• US 9,041,295 B2
• Filed: 03/31/2010
• Issued: 05/26/2015
• Est. Priority Date: 04/09/2009
• Status: Active Grant

• Current Assignee: Tridonic Jennersdorf GMBH (Zumtobel Group AG)
• Original Assignee: Tridonic Jennersdorf GMBH (Zumtobel Group AG)
• Inventors: Hartmann, Paul, Hoschopf, Hans, Gianordoli, Stefan, Tasch, Stefan
• Primary Examiner(s): Vu, David H
• Application Number:
  US13/263,709
• Publication Number:
  US 20120068600A1
• Time in Patent Office: 1,882 Days
• Field of Search: 315/149, 315/152, 315/154, 315/155, 315/153, 315/150, 315/151, 315/51, 315/52, 315/291, 315/307, 257/79, 257/84, 257/80, 257/13
• US Class Current: 315/150
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21V 23/0457 the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
• CPC Class Codes: F21V 23/0464 the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G01J 1/4204 with determination of ambient light solar light G01J2001/4266
• CPC Class Codes: G01J 2001/4252 for testing LED's
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H05B 31/50 specially adapted for ac
• CPC Class Codes: H05B 45/3574 Emulating the electrical or functional characteristics of incandescent lamps
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A retrofit light emitting diode (LED) module may include a carrier with at least one LED, a retrofit connection for mechanical and electrical contact-connection to conventional lamp holders, and an electronic system for driving the at least one LED. At least one part of the electronic system is integrated into the carrier, and the electronic system comprises a sensor system. A retrofit LED module system may include at least two retrofit LED modules and at least one control unit which regulates the retrofit LED modules in an adaptive and synchronized manner.

Claims

1. A retrofit light emitting diode (LED) module comprising:

a carrier with at least one LED;

a retrofit connection for mechanical and electrical contact-connection to lamp holders; and

an electronic system for driving the at least one LED, at least one part of the electronic system being integrated into the carrier, and the electronic system including

a first sensor for sensing at least one of an integrated amplitude or a color spectrum of emitted light of the retrofit LED module,

a second sensor for sensing at least one of an ambient brightness or a color spectrum of an ambient light, and

an electronic circuit for signal processing.

2. The retrofit LED module as claimed in claim 1, wherein the carrier, on which the at least one LED is situated, comprises at least one substrate composed of silicon or a silicon compound.

3. The retrofit LED module as claimed in claim 1, wherein the at least one part of the electronic system which is integrated into the carrier is embodied as chip-on-board technology and is fitted on the carrier.

4. The retrofit LED module as claimed in claim 2, wherein the at least one part of the electronic system which is integrated into the carrier is embodied as an integrated circuit in the substrate of the carrier.

5. The retrofit LED module as claimed in claim 1, wherein the at least one part of the electronic system which is integrated into the carrier comprises an application specific integrated circuit (ASIC) or microcontroller for adaptively controlling the retrofit LED module.

6. The retrofit LED module as claimed in claim 1, wherein the electronic system further includes at least one of a temperature sensor system, a motion sensor system, or an acoustic sensor system.

7. The retrofit LED module as claimed in claim 1, wherein the first and second sensors are disposed so as to be at least one of:

within a main emission angle of the at least one LED or shaded from light from other LEDs.

8. The retrofit LED module as claimed in claim 1, wherein the electronic system further includes a driving electronic system that enables the at least one LED to be dimmed.

9. The retrofit LED module as claimed in claim 1, further comprising at least one red LED, one green LED, and one blue LED, each LED being independently drivable via the electronic system.

10. The retrofit LED module as claimed in claim 1, wherein the electronic system further includes a light sensor system and is activated only in time intervals temporally separated from one another, and

wherein the at least one LED is switched off in the time intervals in which the light sensor system is activated.

11. A retrofit light emitting diode (LED) module system comprising:

at least two retrofit LED modules, each retrofit LED module including;

a carrier,

at least one LED situated on the carrier,

an electronic system for driving the at least one LED; and

a retrofit connection for mechanical and electrical contact-connection to lamp holders; and

at least one control unit that regulates the retrofit LED modules in an adaptive and synchronized manner,

wherein the respective electronic system of each retrofit LED module includes

a first sensor for sensing an integrated amplitude of emitted light of the respective retrofit LED module, and

an electronic circuit for signal processing,

wherein the at least one control unit includes a second sensor for sensing at least one of ambient brightness or a color spectrum of ambient light,

wherein the at least one control unit is configured to provide guide values for the brightness and color spectrum to individual retrofit LED modules, and

wherein each retrofit LED module is configured to determine at least one of the brightness or color of the emitted light of the respective retrofit LED module based on the guide values and the respective electronic systems thereof.

12. The retrofit LED module system as claimed in claim 11, wherein, in each retrofit LED module, at least one part of the electronic system is integrated into the carrier.

13. The retrofit LED module system as claimed in claim 11, further comprising at least one light sensor system which is activated only in time intervals temporally separated from one another, and

wherein the LEDs of the retrofit LED modules are switched off in the time intervals in which the light sensor system is activated.

14. The retrofit LED module system as claimed in claim 11, wherein the at least one control unit and the at least two retrofit LED modules intercommunicate.

15. The retrofit LED module system as claimed in claim 11, wherein each retrofit LED module has at least one of a unique address or an assignment to a control unit primarily responsible therefor.

16. The retrofit LED module system as claimed in claim 11, wherein brightness and color spectrum of emitted light from each individual retrofit LED module is adjustable individually.

17. The retrofit LED module system as claimed in claim 11, wherein the retrofit LED module system is configured to compensate for external influences to maintain a constant light or a constant change in the light.