Halogen incandescent lamp
AssigneeKoninklijke Philips Electronics N.V.
InventorsJacobus Marinus Maria Claassens, Joseph Franciscus Raymond Eijsermans, Wilfried Ludwig Kohlmann
Life of this patent
Estimating the term…
Abstract
A halogen incandescent lamp has a transparent sealed bulb, a gas filling comprising an inert gas and a halogen additive, a luminous element which is attached to a current supply system extending in a pinched portion of the bulb, and a mount extending from at least adjacent the outside of the pinched portion into the bulb and comprising at least one metal support wire which retains the luminous element in the vicinity of the end of the bulb remote from the pinched portion. The mount has a non-conducting part such that the outer end of the part of the mount at or near the outside of the pinched portion and the support wire are electrically insulated from each other.
Claims10
A halogen incandescent lamp comprising a transparent sealed bulb (2), a gas filling comprising an inert gas and a halogen additive, a luminous element (4) which is attached to a current supply system (7, 8, 9) extending in a pinched portion (3) of the bulb, and a mount (5, 9, 10, 11, 12, 13) extending from at least adjacent the outside of the pinched portion (3) into the bulb (2) and comprising at least one metal support wire (5) which retains the luminous element (4) in the vicinity of the end of the bulb (2) remote from the pinched portion (3), characterized in that the mount (5, 9, 10, 11, 12, 13) comprises a non-conducting part (9, 10;
- 12) such that the outer end (11;
- 12) of the mount (5, 9, 10, 11, 12, 13) at or near the outside of the pinched portion (3) and the support wire (5) are electrically insulated from each other.
A method of manufacturing a halogen incandescent lamp, the lamp comprising a transparent sealed bulb (2), a gas filling comprising an inert gas and a halogen additive, a luminous element (4) which is attached to a current supply system (7, 8, 9) extending in a pinched portion (3) of the bulb, and a mount (5, 9, 10, 11, 12, 13) extending from at least adjacent the outside of the pinched portion (3) into the bulb (2) and comprising at least one metal support wire (5) which retains the luminous element (4) in the vicinity of the end of the bulb (2) remote from the pinched portion (3), the mount (5, 9, 10, 11, 12, 13) comprising a non-conducting part (9, 10;
- 12) such that the outer end (11;
- 12) of the mount (5, 9, 10, 11, 12, 13) at or near the outside of the pinched portion (3) and the support wire (5) are electrically insulated from each other, and the nonconducting part comprising a bead (12)
- the method comprising the step of applying the bead to the outside of the pinched portion (3), characterized in that the part of the mount (5, 11, 13) which extends outside the pinched portion (3) is substantially removed before the bead (12) is applied.
Dependencies are inferred from the claim text.