Modular lighting apparatus

1. A modular lighting apparatus for use with a screw-socket light fixture, the lighting apparatus comprising:

a bulb assembly including a body and a light-emitting component mounted to the body;

an adapter including a body, a screw base mounted to the body and receivable in the screw-socket light fixture, and an electronic ballast housed in the body and electrically connected to the screw base; and

a mechanical and electrical connector assembly that removably connects the bulb assembly to the adapter for use, wherein the bulb assembly is replaceable and the electronic ballast is reusable and the light-emitting component includes an omni-directional LED array.

2. The lighting apparatus of claim 1 , wherein the light-emitting component includes a spiral-tube CFL.

3. The lighting apparatus of claim 1 , wherein the light-emitting component includes a CFL tube in transverse arrangement with a low profile.

4. The lighting apparatus of claim 3 , wherein the CFL has a transverse dimension and a longitudinal dimension that is less than the transverse dimension.

5. The lighting apparatus of claim 1 , further comprising a light-sensing control device that is integral to the adapter body.

6. The lighting apparatus of claim 1 , wherein the light-emitting component includes an upright stem and at least a portion of the LED array is arranged in an omni-directional fashion on the stem.

7. The lighting apparatus of claim 6 , wherein the LED array includes LED's radially arranged on the stem in a staggered fashion so that no adjacent LED's are parallel and pointed in the same direction.

8. The lighting apparatus of claim 1 , wherein the light-emitting component includes a first LED array arranged in an omni-directional fashion on an upright stem and a second LED array arranged in an omni-directional fashion annularly around the bulb assembly body.

9. The lighting apparatus of claim 1 , wherein the light-emitting component includes a conventional linear-tube CFL.

10. The lighting apparatus of claim 1 , wherein the screw base includes a sleeve contact, an end contact, and an insulation section therebetween.

11. The lighting apparatus of claim 1 , wherein the connector assembly includes first mechanical and electrical connectors of the bulb assembly body and second mechanical and electrical connectors of the adapter body, wherein the first and second electrical connectors disengageably contact each other to provide a path of electrical continuity for current to flow from the adapter to the bulb assembly, and wherein the first and second mechanical connectors disengageably couple together to securely fasten the bulb assembly to the adapter for use.

12. The lighting apparatus of claim 11 , wherein the first electrical connectors each include a conductive pin with a head defining a contact, the second electrical connectors each include a contact positioned within the adapter body, and the adapter body defines at least one aperture for each of the second electrical connectors through which the heads extend so that the first contacts engage the second contact.

13. The lighting apparatus of claim 12 , wherein the heads each have a larger lateral dimension than the pins, and the apertures are curved slots each having an enlarged portion that the heads can fit through and a narrowed portion that the heads cannot fit through, wherein the bulb assembly and the adapter electrically connect together upon rotation of the bulb assembly relative to the adapter.

14. The lighting apparatus of claim 11 , wherein the first mechanical connectors each include an arm with a head, the second mechanical connectors each include an aperture, the arms extend from the bulb assembly body and through the apertures, the heads have a larger lateral dimension than the arms, and the apertures are curved slots each having an enlarged portion that the heads can fit through and a narrowed portion that the heads cannot fit through, wherein the bulb assembly and the adapter mechanically connect together upon rotation of the bulb assembly relative to the adapter.

15. The lighting apparatus of claim 1 , wherein the mechanical connectors and the electrical connectors are separate structures.

16. A modular lighting apparatus for use with a screw-socket light fixture, the lighting apparatus comprising:

a bulb assembly including a body and a CFL tube mounted to the body;

an adapter including a body, a screw base mounted to the body and receivable in the screw-socket light fixture, and an electronic ballast housed in the body and electrically connected to the screw base, wherein the screw base includes a sleeve contact, an end contact, and an insulation section therebetween;

a mechanical and electrical connector assembly that removably connects the bulb assembly to the adapter for use, wherein the bulb assembly is replaceable and the electronic ballast is reusable, wherein the mechanical connectors are provided by first and second magnetic pieces with the first magnetic piece positioned on the adapter body and the second magnetic piece positioned on the bulb assembly body aligned with and facing the first magnetic piece when the bulb assembly is connected to the adapter body.

17. The lighting apparatus of claim 16 , further comprising a photocell that is integral to the adapter body.

18. The lighting apparatus of claim 16 , wherein the CFL tube is selected from the group consisting of

i a spiral-tube CFL,

ii a low-profile CFL tube in transverse arrangement, and

iii a conventional linear-tube CFL.

19. The lighting apparatus of claim 16 , wherein the connector assembly includes first mechanical and electrical connectors of the bulb assembly body and second mechanical and electrical connectors of the adapter body, wherein the first and second electrical connectors disengageably contact each other to provide a path of electrical continuity for current to flow from the adapter to the bulb assembly, and wherein the first and second mechanical connectors disengageably couple together to securely fasten the bulb assembly to the adapter for use.