Rotationally adjustable lamp and manufacturing method

1. Method for manufacturing a rotationally adjustable lamp, the method comprising:

molding a shell having two guiding slots wherein the guiding slots are arranged in a cylindrical portion of the shell, the guiding slots extending along the circumference of the cylindrical portion and perpendicular to the height of the cylindrical portion, said two guiding slots forming a pair of oppositely arranged guiding slots on the cylindrical portion of the shell,

providing a base configured to receive the shell and connect to a lamp socket;

inserting the shell into the base so as to enclose the guiding slots by the base; and

forming in the base, when the shell is inserted into the base, a notch protruding into each guiding slot, the notch being movable along the guiding slot so as to allow for the shell to be rotated relative to the base.

2. The method according to claim 1 , wherein the guiding slot extends for about 180 degrees.

3. The method according to claim 1 , wherein an additional pair of oppositely arranged guiding slots is arranged on the cylindrical portion of the shell, the two pairs of guiding slots being separated along the height of the cylindrical portion.

4. The method according to claim 1 , wherein the shell is injection molded.

5. The method according to claim 1 , wherein molding the shell comprises molding a first half and a second half of the shell.

6. The method according to claim 5 , further comprising

providing a carrier having at least one light source and

enclosing the carrier between the first and second halves of the shell, before the shell is inserted into the base.

7. The method according to claim 6 , wherein the light source is a solid-state lighting device.

8. The method according to claim 5 , wherein the shell comprises a joint in a plane parallel to a longitudinal axis of the lamp, the first and second halves being attached to each other along the joint.

9. The method according to claim 5 , wherein the carrier has a perimeter including a curved portion, wherein the at least one light source is a plurality of light sources arranged along the curved portion of the perimeter on opposite sides of the carrier, and wherein each half of the shell has a flat central area surrounded by a hollow ridge extending along the curved portion of the perimeter of the carrier.

10. A rotationally adjustable lamp, comprising

a base provided with a notch and configured to connect to a lamp socket; and

a shell supported by the base and provided with two guiding slots,

wherein the guiding slots are arranged in a cylindrical portion of the shell, the guiding slots extending along the circumference of the cylindrical portion and perpendicular to the height of the cylindrical portion, said two guiding slots forming a pair of oppositely arranged guiding slots on the cylindrical portion of the shell,

wherein the notch protrudes into each guiding slot and is movable along the guiding slot so as to allow for the shell to be rotated relative to the base.

11. The lamp according to claim 10 , wherein the shell has four guiding slots arranged in a cylindrical portion of the shell, each one of the guiding slots extending along the circumference of the cylindrical portion and perpendicular to the height of the cylindrical portion, and wherein the four guiding slots form a first and a second pair of oppositely arranged guiding slots, the two pairs being separated along the height of the cylindrical portion.

12. The lamp according to claim 10 , wherein the shell comprises a first half and a second half, the first and second halves enclosing a carrier having a plurality of light sources arranged on opposite sides of the carrier.