LED module with integrated current control

Patent metadata

Field	Value
Publication number	US-10057953-B2
Application number	US-201515128814-A
Country	US
Kind code	B2
Filing date	Mar 18, 2015
Priority date	Mar 27, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

The present application relates to a LED module (10) for being connected to a DC power supply (11), the LED module comprising a multilayer board (2) comprising a metal surface (2a) and a dielectric layer (2b) arranged thereon, at least one LED chip (1) arranged on the metal surface (2a) of the multilayer board, an encapsulation layer (3) arranged above the at least one LED chip (1), and current regulator means (4) arranged on the multilayer board, wherein the current regulator means (4) are designed to convert a DC input provided to the module (10) to a predefined DC output for being provided to the at least one LED chip (1).

First claim

What is claimed is:

1. A LED module which is supplied with DC power, the LED module comprising
a multilayer board comprising a metal surface and a dielectric layer arranged thereon,
at least one LED chip arranged on the metal surface of the multilayer board,
an encapsulation layer arranged above the at least one LED chip, and
a current regulator arranged on the multilayer board, wherein the current regulator converts the DC power supplied to the LED module to a predefined DC output provided to the at least one LED chip wherein the metal surface is a metal substrate, a metal layer or a metal foil and is a plated or coated aluminum substrate having a reflective surface and the dielectric layer is a printed circuit board and wherein the current regulator is arranged exclusively on the dielectric layer of the multilayer board.

2. The LED module according to claim 1 ,
wherein the current regulator is a DC/DC converter designed for receiving a DC input of below 60 Volts.

3. The LED module according to claim 1 ,
wherein the current regulator is a DC/DC converter or an analog current/voltage regulator.

4. The LED module according to claim 3 ,
wherein the DC/DC converter comprises a buck topology, a boost topology, a buck-boost or a split-pi topology.

5. The LED module according to claim 1 ,
wherein the module comprises a reflector selectively connectable to the module and arranged to surround the at least one LED chip.

6. The LED module according to claim 5 ,
wherein the reflector is positioned on at least one of: the dielectric layer or on the metal surface of the multilayer board.

7. The LED module according to claim 1 ,
wherein the current regulator is arranged exclusively on the dielectric layer of the multilayer board.

8. The LED module according to claim 1 ,
wherein the encapsulation layer comprises color conversion particles for converting at least part of the primary light emitted by the at least one LED chip to light of another wavelength.

9. The LED module according to claim 1 ,
wherein the encapsulation layer is provided within an outer dam arranged on at least one of: a surface of the dielectric layer or a surface of the metal surface.

10. The LED module according to claim 1 ,
wherein the LED module is designed for emitting white light.

11. A LED spotlight device comprising the LED module according to claim 1 .

12. A system comprising at least two LED modules according to claim 1 ,
wherein the system comprises a central AC/DC power converter designed to provide direct current or direct voltage to the respective LED modules.

13. The system according to claim 12 ,
wherein the at least two LED modules are arranged in series or parallel with regards to the AC/DC power converter or are connected to a DC bus system.

14. The system according to claim 13 ,
wherein the at least two LED modules or the central AC/DC power converter and at least one LED module are designed to communicate through the DC bus system to adjust the intensity, color or radiation pattern of the emitted light.

15. The system according to claim 12 ,
wherein the AC/DC power converter is designed for converting an AC input current of a power supply to a DC output voltage of below 60 Volts.

Assignees

• Tridonic Jennersdorf Gmbh
• Tridonic Gmbh & Co Kg

Inventors

• Wimmer Florian
• Riemer Steffen
• Bakk Istvan
• Pereira Eduardo
• Schonberger John

Classifications

• F21V5/00

  Refractors for light sources (characterised by cooling arrangements F21V29/504) · CPC title

• H10W90/753

  between laterally-adjacent chips · CPC title

• H10W90/00

  Package configurations · CPC title

• F21V23/005

  the substrate is supporting also the light source · CPC title

• H05B45/00

  Circuit arrangements for operating light-emitting diodes [LED] · CPC title