LED bulb for incandescent bulb replacement with internal heat dissipating structures

1. An LED based light for replacing an incandescent bulb, comprising:

a base having a first end and a second end;

a connector fixed to the first end of the base, the connector adapted to physically connect to an incandescent light fixture;

an open-ended light structure extending from the second end of the base, the light structure having an inner surface defining a cavity in fluid communication with an ambient environment and an opposing outer surface forming an exterior of the LED based light;

at least one LED carried by the second end of the base and positioned between the inner surface and the outer surface of the open-ended light structure; and

a heat dissipating structure for the at least one LED extending into the cavity.

2. The LED based light of claim 1 , wherein the heat dissipating structure includes a plurality of longitudinally extending pins.

3. The LED based light of claim 1 , wherein the heat dissipating structure includes a plurality of longitudinally extending fins.

4. The LED based light of claim 1 , further comprising:

an active heat dissipating device disposed for drawing air across the heat dissipating structure.

5. The LED based light of claim 1 , further comprising:

a thermal insulating shroud disposed about the base.

6. The LED based light of claim 1 , further comprising:

a thermal insulating shroud extending over the open end of the light structure to enclose the heat dissipating structure in the cavity.

7. The LED based light of claim 1 , further comprising:

electronics housed in the base, the electronics configured to supply power to the at least one LED.

8. The LED based light of claim 7 , wherein the base defines a plurality of apertures configured to allow airflow between the electronics and the ambient environment.

9. The LED based light of claim 1 , wherein the at least one LED is arranged to emit light in a predetermined distribution that at least partially replicates that of an incandescent bulb.

10. The LED based light of claim 1 , wherein the base and the heat dissipating structure are integrally formed.

11. The LED based light of claim 1 , wherein the base, the light structure and the heat dissipating structure are integrally formed.

12. The LED based light of claim 1 , wherein the light structure is an annular flange.

13. The LED base light of claim 1 , wherein the outer surface is contoured to form a conical profile.

14. The LED base light of claim 1 , wherein the outer surface is contoured to form a bulbous profile.

15. An LED based light, comprising:

a base;

a connector fixed to the base, the connector adapted to physically connect to an incandescent light fixture;

an open-ended annular flange extending from the base along a longitudinal axis of the light, the flange having an inner surface defining a cavity in fluid communication with an ambient environment and an opposing exterior outer surface;

at least one LED mounted on the base opposite the connector and positioned between the inner surface and the outer surface of the open-ended annular flange; and

a heat dissipating structure for the at least one LED extending into the cavity.

16. The LED based light of claim 15 , wherein the base, the flange and the heat dissipating structure are integrally formed.

17. The LED base light of claim 15 , wherein the outer surface is contoured to form a conical profile.

18. The LED based light of claim 1 , further comprising:

a circuit board positioned on a distal end of the heat dissipating structure; and

at least one additional LED positioned on the circuit board.

19. The LED based light of claim 1 , further comprising:

a disk located at a distal end of the heat dissipating structure, wherein the at least one LED is positioned on the disk.