Lamp, method for manufacturing a lamp and use of a holder for such a lamp
AssigneeLumileds LLC
InventorsJuergen Flechsig, Peter Rosenmueller
Life of this patent
Estimating the term…
Abstract
A lamp (10), which is particularly a motor vehicle headlight, comprises a burner (12) for emitting light, which is supported by a holder (16) for mechanically connecting the burner (12) with a socket (14). The holder (16) comprises a metal ring (26) surrounding the burner (12). The metal ring (26) is thermally connected to the burner (12) via a single connecting surface (40), which is in planar contact to the burner (12) over an angle of ≥350° in circumferential direction. Due to the increased heat transfer to the environment the used materials are less subjected to heat, so that the overall lifetime and the shock resistance of the lamp (10) are increased at the same time.
Claims12
Lamp comprising:
- a burner (12) for emitting light,
- a holder (16) for mechanically connecting the burner (12) with a socket (14), the holder (16) comprising a metal ring (26) and at least one leg (28) protruding from the metal ring (26), wherein:
- the holder (16) supports the burner (12),
- the metal ring (26) surrounds the burner (12),
- the metal ring (26) is thermally connected to the burner (12) via a single connecting surface (40) that is in planar contact to the burner (12) at an angle of ≥350° in circumferential direction and abuts against the burner (12), and
- the burner (12) comprises a glass body (22) and a metal bush (24) fixed to the glass body (22), the metal bush (24) being in planar contact to the metal ring (26) of the holder (16).
Method for manufacturing a lamp (10) comprising the steps:
- providing a metal sheet,
- stamping a holder sheet from the metal sheet by a single stamping step,
- forming the holder sheet to a ring (26) and at least one leg (28) protruding from the ring (26), and
- inserting a burner (12) into the ring (26) such, that the ring (26) is in direct contact with and thermally connected to the burner (12) via a single connecting surface (40) that is in planar contact to the burner (12) at an angle of ≥350° in circumferential direction and abuts against the burner (12) wherein:
- the burner (12) comprises a glass body (22) and a metal bush (24) fixed to the glass body (22), and
- inserting the burner (12) into the ring (26) comprises inserting the metal bush (24) into the ring (26), the metal bush (24) being in planar contact to the ring (26).
Dependencies are inferred from the claim text.