Lightbulb and bulb cap therefor
A lightbulb comprising a bulb portion ( 10 ) in which is housed an illuminating component configured to selectively emit visible light, the lightbulb having a cap portion ( 16 ) configured to mount the lightbulb in a light fitting or lamp holder, the cap portion incorporating a adaptor element configured to selectively alter the configuration of the cap portion between a screw fitting and a bayonet fitting.
1. A lightbulb comprising a bulb portion in which is housed an illuminating component, said illuminating component emitting light when powered;
wherein the lightbulb has having a cap portion configured to mount the lightbulb in a light fitting or lamp holder;
wherein the bulb cap portion comprises first and second cylindrical mounts, the second cylindrical mount being concentrically mounted within the first cylindrical mount;
wherein the second cylindrical mount has a smaller diameter than that of the first cylindrical mount;
wherein each of the first and the second cylindrical mounts is provided with a screw thread, the screw thread of the first mount having a different diameter than that of the screw thread of the second mount;
wherein said cap portion further comprises a collar around the second cylindrical mount, said collar having inwardly extending radial pins which slide into and along channels of the second cylindrical mount, so that said collar is mounted on said cap portion for selective longitudinal retraction and extension relative thereto; and
wherein the collar further has a pair of radially outwardly extending pins for a bayonet fitting.
2. The lightbulb according to claim 1 , wherein said second screw threaded mount is mounted on said cap portion for selective longitudinal extension and retraction relative thereto.
3. The lightbulb according to claim 1 , wherein the first mount is generally tubular having a distal open end, and the second mount is mounted within said open end, for longitudinal movement relative thereto so as to enable the second mount to be selectively extended from and retracted into said first mount.
4. The lightbulb according to claim 1 , wherein said first screw threaded mount has a diameter and screw thread configuration conforming to the E27 standard.
5. The lightbulb according to claim 1 , wherein said collar has a diameter and configuration conforming to the B22 standard.
6. The lightbulb according to claim 1 , wherein said second screw threaded mount has a diameter and screw thread configuration conforming to the E14 standard.
7. The lightbulb according to claim 1 , wherein said illuminating component comprises one or more LEDs.
8. The lightbulb according to claim 7 , comprising a bulb portion, a housing including one or more batteries, and a top cap.
9. The lightbulb according to claim 8 , wherein said one or more LEDs are selectively wirelessly operable, and wherein an antenna is mounted in said top cap.