Method for mounting an LED module on a support

1. A method for mounting an LED module on a support, comprising

1) providing an LED module having a printed circuit board and a plurality of LEDs mounted thereon, a support, and an electrically conductive fastener, the printed circuit board having a metal substrate and an insulating layer formed on a top face of the substrate;

2) removing a corresponding part of the insulating layer from the substrate to expose the top face of the substrate; and

3) extending the fastener through the printed circuit board into the support, wherein an end of the fastener establishes electrical communication with a top face of the insulating layer and the top face of the substrate, static electricity generated on the top face of the insulating layer being conducted via the fastener to the substrate which has been grounded beforehand.

2. The method for mounting an LED module on a support as claimed in claim 1 , wherein step 2) is implemented by milling the corresponding part of the insulating layer off the substrate.

3. The method for mounting an LED module on a support as claimed in claim 1 , wherein step 2) is simultaneously implemented with step 3) by scraping the corresponding part of the insulating layer off the substrate with the fastener when the fastener is extended through the printed circuit board into the support.

4. The method for mounting an LED module on a support as claimed in claim 3 , wherein the fastener comprises a head, a pole extending downwardly from the head, and a plurality of teeth protruding downwardly toward the support, the plurality of teeth scraping the corresponding part of the insulating layer from the substrate in step 2).

5. The method for mounting an LED module on a support as claimed in claim 4 further comprising step 4) continuously scraping the substrate with the plurality of teeth of the fastener after step 3).

6. The method for mounting an LED module on a support as claimed in claim 5 , wherein a substrate portion scraped off by the plurality of teeth of the fastener has a thickness of 0.2 mm.

7. The method for mounting an LED module on a support as claimed in claim 4 , wherein the fastener is made integrally.

8. The method for mounting an LED module on a support as claimed in claim 4 , wherein the fastener comprises a screw and an annulus detachably sleeved on the screw, the head and the pole together constituting the screw, and the teeth being formed from the annulus.

9. The method for mounting an LED module on a support as claimed in claim 4 , wherein each of the plurality of teeth is triangular.

10. The method for mounting an LED module on a support as claimed in claim 1 , wherein a through hole is defined through the printed circuit board, the corresponding removed part of the insulating layer being annular and surrounding the through hole.

11. A method for mounting an LED module on a support, comprising

1) providing an LED module comprising a printed circuit board and a plurality of LEDs mounted on the printed circuit board, the printed circuit board comprising a metal substrate and an insulating layer formed on a top face of the substrate;

2) providing a support which is grounded;

3) providing a plurality of electrically conductive fasteners each comprising a head, a pole extending downwardly from a bottom of the head, and a plurality of teeth extending downwardly and surrounding the pole;

4) extending the plurality of fasteners through the printed circuit board and into the support; and

5) rotating the plurality of fasteners such that the plurality of teeth thereof scrape portions of the insulating layer off the top face of the substrate of the printed circuit board, whereby the plurality of fasteners electrically connects with a top face of the remaining insulating layer and the top face of the substrate , static electricity generated on the top face of the remaining insulating layer being conducted via the fasteners to the substrate which has been grounded beforehand.

12. The method for mounting an LED module on a support as claimed in claim 11 , wherein the plurality of teeth continues to scrape the top face of the substrate after step 5) to reach a lower level 0.2 mm from the top face of the substrate of the printed circuit board.

13. The method for mounting an LED module on a support as claimed in claim 11 , wherein each of the plurality of fasteners is made integrally.

14. The method for mounting an LED module on a support as claimed in claim 11 , wherein each of the plurality of fasteners comprises two mutually detachable parts, one comprising the head and the pole, and the other comprising a ring and the plurality of teeth formed from the ring.

15. The method for mounting an LED module on a support as claimed in claim 11 , wherein each of the plurality of teeth has a sharp extremity end projecting toward the support.

16. The method for mounting an LED module on a support as claimed in claim 1 , wherein the insulating layer has a thickness less than 0.1 mm.

17. The method for mounting an LED module on a support as claimed in claim 11 , wherein the insulating layer has a thickness less than 0.1 mm.

18. The method for mounting an LED module on a support as claimed in claim 1 , wherein the printed circuit board further comprises another insulating layer below the insulating layer and an electrically conductive layer between the insulating layer and the another insulating layer.

19. The method for mounting an LED module on a support as claimed in claim 11 , wherein the printed circuit board further comprises another insulating layer below the insulating layer and an electrically conductive layer between the insulating layer and the another insulating layer.