Underwater lamp

1. An underwater lamp, comprising:

a light generating element for emitting light, the light generating element having a light emitting surface;

a shell;

a lens being received at one end of the shell, wherein the shell and the lens cooperatively define an interior space; the interior space receiving the light generating element therein; the lens facing the light emitting surface; and

at least one opening being defined in one of the shell and the lens of the underwater lamp to intercommunicate the interior space with an exterior of the underwater lamp.

2. The underwater lamp of claim 1 , further comprising a sink base attached to another end of the shell opposite to the lens, wherein the light generating element is fixedly attached to the sink base, forming a heat conduction path.

3. The underwater lamp of claim 2 , further comprising a plurality of fins integrally formed with the sink base and extending away from the sink base.

4. The underwater lamp of claim 2 , wherein the light generating element comprises at least one light emitting diode; the at least one light emitting diode comprising a light emitting diode die and a packaging layer encapsulating the light emitting diode die.

5. The underwater lamp of claim 2 , wherein a waterproof layer is positioned on the sink base and forms a water tight seal around the light generating element to keep water from flowing to the light generating element.

6. The underwater lamp of claim 5 , further comprising a sealing ring positioned between the sink base and the waterproof layer.

7. The underwater lamp of claim 5 , wherein the waterproof layer is made of one of glass, acrylic, and polycarbonate.

8. The underwater lamp of claim 1 , further comprising a convergent lens positioned on the light generating element, and located on the optical path of the light generating element.

9. The underwater lamp of claim 1 , further comprising a filter positioned in the at least one opening to prevent pollutants from flowing into the interior space.

10. The underwater lamp of claim 1 , wherein the at least one opening comprises a pair of openings defined in opposite sides of the shell.

11. An underwater lamp, comprising:

a cylindrical shaped shell with two opposite ends being open;

a lens being arranged at one of the two opposite ends of the shell;

a sink base fixedly attached to the other one of the two opposite ends of the shell; wherein the shell, the sink base, and the lens cooperatively define an interior space;

a light generating element received in the interior space and fixedly attached to the sink base; and

at least one opening being defined in the lamp for fluid flowing into the interior space.

12. The underwater lamp of claim 11 , wherein the at least one opening is defined in one of the shell, the sink base, and the lens.

13. The underwater lamp of claim 11 , further comprising a filter positioned in the at least one opening of the lamp to keep pollutants from flowing into the interior space.

14. The underwater lamp of claim 11 , further comprising a convergent lens positioned on the light generating element and located on the optical path of the light generating element.

15. The underwater lamp of claim 11 , further comprising a waterproof layer positioned on the sink base and a sealing ring being positioned between the waterproof layer and the sink base, wherein the waterproof layer, the sealing ring, and the sink base form a water tight seal around the light generating element to keep water from flowing to the light generating element.

16. The underwater lamp of claim 15 , wherein the waterproof layer is made of one of glass, acrylic, and polycarbonate.

17. The underwater lamp of claim 11 , further comprising a plurality of fins extending away from the sink base.

18. The underwater lamp of claim 11 , wherein the light generating element comprises at least one light emitting diode.

19. The underwater lamp of claim 11 , wherein the light generating element is a bulb or a cold cathode fluorescent lamp.