Theftproof lamp
AssigneeKoninklijke Philips N.V.
InventorYunfei Xu
Life of this patent
Estimating the term…
Abstract
A theftproof lamp (100), including a lamp body (110) and a lamp cap (120). A spring member (140) and a ratchet wheel mechanism (130) are provided inside the lamp for cooperating with each other and enabling theftproof effect. When turning the lamp clockwise, the lamp can be screwed down to a lamp socket. When turning the lamp counter-clockwise, the lamp can only make repetitive circular motions around the ratchet wheel and therefore achieve the theftproof effect. When a user needs to remove the lamp in a safe way, a bolt (170) can be moved inwardly to block the spring member from moving upward, so that the lamp body, ratchet wheel and lamp cap form a whole, without any movement in relation to each other, and therefore allowing easy removal of the lamp.
Claims5
A lamp comprising:
- a lamp body including a spring member;
- and
- a lamp base including a ratchet wheel and an exterior surface configured to mechanically engage with a lamp socket, wherein the spring member is configured to mechanically engage with the ratchet wheel to allow the lamp body and the lamp base to rotate only in one direction with respect to one another, wherein the spring member is configured so as to be constrained from axial movement.
Dependencies are inferred from the claim text.