An LED lamp includes LED chips, an axle, and a lampshade. The LED chips are mounted on surface of the axle. The axle extends across the lampshade. A heat pipe is installed inside the axle for transferring the heat generated by the LED chips to exterior of the lampshade and obtaining a better heat dissipation.
1. An LED lamp, comprising:
a lampshade having a concave surface, a central hole and an opening, said central hole being formed on said lampshade;
an axle passing through said central hole into said lampshade;
a heat dissipating element partially mounted inside said axle, extending across both sides of said lampshade, and being defined with a heat receiving portion and a heat dissipating portion, said heat dissipating portion disposed outside of said lampshade; and
a plurality of LED chips, mounted on surface of said axle and corresponding to said heat receiving portion of said heat dissipating element; and
wherein said plurality of LED chips, said axle and said heat dissipating element are arranged with respect to each other so that heat generated by said LED chips is transferred by said heat dissipating element from said heat receiving portion to said heat dissipating portion.
2. The LED lamp according to claim 1 , wherein surface of said LED chips are covered with a transparent material for preventing said LED chips from reaction with air.
3. The LED lamp according to claim 2 , wherein said transparent material is chosen from one of epoxy and silicone.
4. The LED lamp according to claim 1 , further comprising a transparent plate mounted on said opening of said lampshade for preventing foreign objects entering said lampshade.
5. The LED lamp according to claim 4 , wherein a space enclosed by said transparent plate and said lampshade is filled with a transparent material for preventing said LED chips from reaction with air.
6. The LED lamp according to claim 5 , wherein said transparent material is chosen from one of nitrogen and inert gas.
7. The LED lamp according to claim 5 , wherein said transparent material is chosen from one of epoxy and silicone.
8. The LED lamp according to claim 4 , wherein a space enclosed by said transparent plate and said lampshade is vacuumed for preventing said LED chips from reaction with air.
9. The LED lamp according to claim 1 , wherein said axle is made of an electrically insulation material.
10. The LED lamp according to claim 1 , wherein said axle is a printed circuit board.
11. The LED lamp according to claim 1 , further comprising a printed circuit board covering a surface of said axle.
12. The LED lamp according to claim 1 , wherein said LED chips are bare chips.
13. The LED lamp according to claim 1 , wherein said LED chips emit light of different colors or the same color.
14. The LED lamp according to claim 1 , wherein said heat dissipating element is at least a heat pipe.
15. The LED lamp according to claim 1 wherein said heat dissipating element is composed of at least a thermally conductive rod.
16. The LED lamp of according to claim 1 further comprising at least one radiation fin on said heat dissipating portion of said axle.
17. The LED lamp according to claim 15 wherein each thermally conductive rod is formed with at least a conduit for being filled with a fluid for heat transfer.
18. The LED lamp according to claim 12 , wherein surface of said bare chips are covered with a transparent material for preventing said bare chips from reaction with air.
19. The LED lamp according to claim 12 , further comprising a transparent plate mounted on said opening of said lampshade for preventing foreign objects entering said lampshade.
20. The LED lamp according to claim 19 , wherein a space enclosed by said transparent plate and said lampshade is filled with a transparent material for preventing said bare chips from reaction with air.
21. The LED lamp according to claim 19 , wherein a space enclosed by said transparent plate and said lampshade is vacuumed for preventing said bare chips from reaction with air.