Printed circuit board, corresponding lighting module, lighting system and method for implementing lighting modules
The printed circuit board includes metallic zones including: a first, second and third positive terminal, a first and second negative terminal, wherein the second negative terminal is connected to the first negative terminal, and electric contacts for the mounting of one or more LEDs and electric traces such that the LEDs are connected in series forming a LED string. The printed circuit board comprises selection means implemented with electric traces and metallic contacts adapted to be short-circuited via links in order to permit all of the following connections: a connection of the LED string between the first and third positive terminal, a connection of the LED string between the first positive terminal and the first negative terminal, a connection of the LED string between the second and third positive terminal, and a connection of the LED string between the second positive terminal and the first negative terminal.
1. A printed circuit board comprising metallic zones comprising:
a first, a second and a third positive terminal,
a first and a second negative terminal, wherein the second negative terminal is connected to said first negative terminal, and
electric contacts for the mounting of one or more LEDs and electric traces such that said one or more LEDs are connected in series forming a LED string;
wherein said printed circuit board comprises selection means implemented with electric traces and metallic contacts adapted to be short-circuited via links in order to permit all of the following connections:
a connection of said LED string between the first positive terminal and the third positive terminal,
a connection of said LED string between the first positive terminal and the first negative terminal,
a connection of said LED string between the second positive terminal and the third positive terminal, and
a connection of said LED string between the second positive terminal and the first negative terminal.
2. The printed circuit board as claimed in claim 1 , wherein said selection means comprise:
a first set of two contacts connected between said first positive terminal and the positive terminal of said LED string;
a second set of two contacts connected between said second positive terminal and the positive terminal of said LED string;
a third set of two contacts connected between the negative terminal of said LED string and the third positive terminal; and
a fourth set of two contacts connected between the negative terminal of said LED string and the first negative terminal.
3. The printed circuit as claimed in claim 2 , wherein said two contacts of said first, second, third and fourth set are metallic contacts with a SMD format 1H/0201, 1E/0402, 1J/0603, 2A/0805 or 2B/1206.
4. The printed circuit board as claimed in claim 2 , wherein:
either said two contacts of said first set or said two contacts of said second set are closed through a link; and
either said two contacts of said third set or said two contacts of said fourth set are closed through a link.
5. The printed circuit board as claimed in claim 1 , wherein said printed circuit board comprises a fourth positive terminal connected to said first positive terminal.
6. The printed circuit board as claimed in claim 1 , wherein said printed circuit board comprises bypass means implemented with electric traces and/or metallic contacts configured to be short-circuited for selectively bypassing one or more of said LEDs.
7. The printed circuit board as claimed in claim 1 , wherein said printed circuit board comprises:
electric contacts for the mounting or the implementation of a current regulator; and
further bypass means implemented with electric traces and/or metallic contacts configured to be short-circuited for selectively bypassing said current regulator.
8. A lighting system comprising:
an electronic converter configured to provide a regulated voltage or current; and
one or more lighting modules comprising one or more printed circuit boards comprising metallic zones comprising:
a first, a second and a third positive terminal,
a first and a second negative terminal, wherein the second negative terminal is connected to said first negative terminal, and
electric contacts for the mounting of one or more LEDs and electric traces such that said one or more LEDs are connected in series forming a LED string;
wherein said printed circuit board comprises selection means implemented with electric traces and metallic contacts adapted to be short-circuited via links in order to permit all of the following connections:
a connection of said LED string between the first positive terminal and the third positive terminal,
a connection of said LED string between the first positive terminal and the first negative terminal,
a connection of said LED string between the second positive terminal and the third positive terminal, and
a connection of said LED string between the second positive terminal and the first negative terminal; and
a one or more LEDs mounted on said one or more printed circuit boards.
9. A method of implementing lighting modules, comprising the steps of:
implementing a printed circuit board comprising metallic zones comprising:
a first, a second and a third positive terminal,
a first and a second negative terminal, wherein the second negative terminal is connected to said first negative terminal, and
electric contacts for the mounting of one or more LEDs and electric traces such that said one or more LEDs are connected in series forming a LED string;
wherein said printed circuit board comprises selection means implemented with electric traces and metallic contacts adapted to be short-circuited via links in order to permit all of the following connections:
a connection of said LED string between the first positive terminal and the third positive terminal,
a connection of said LED string between the first positive terminal and the first negative terminal,
a connection of said LED string between the second positive terminal and the third positive terminal, and
a connection of said LED string between the second positive terminal and the first negative terminal;
soldering one or more LED on said printed circuit board in order to form a LED string;
determining whether the lighting module is a single lighting module or belongs to a lighting module string;
if said lighting module belongs to a lighting module string, determining whether the lighting module is the first or the last lighting module of the lighting module string, and
if the lighting module is the first lighting module of the lighting module string, setting said selection means such that said LED string is connected between the first positive terminal and the third positive terminal or between the second positive terminal and the third positive terminal; and
if said lighting module is the last lighting module of the lighting module string, setting said selection means such that said LED string is connected between the second positive terminal and the first negative terminal.
10. The method as claimed in claim 9 , comprising:
if said lighting module is a single lighting module, setting said selection means such that said LED string is connected between the first positive terminal and the first negative terminal or between the second positive terminal and the first negative terminal.