Lamp

• US 5,291,380 A
• Filed: 08/14/1992
• Issued: 03/01/1994
• Est. Priority Date: 08/17/1991
• Status: Expired due to Fees

• Current Assignee: Wilhelm Koch GmbH
• Original Assignee: Wilhelm Koch GmbH
• Inventors: Behr, Wolfgang
• Primary Examiner(s): Cole, Richard R.
• Assistant Examiner(s): Cariaso, Alan B.
• Application Number:
  US07/929,417
• Time in Patent Office: 564 Days
• Field of Search: 362/310, 362/226, 362/455, 362/267, 362/351, 313/113, 313/318
• US Class Current: 362/310
• CPC Class Codes: F21S 8/02 of recess-mounted type, e.g. downlighters specially adapted for vehicle exteriors F21S41/00-F21S45/00
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: H01J 61/36 Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
• CPC Class Codes: H01K 1/28 Envelopes; Vessels
• CPC Class Codes: H01K 1/44 directly applied to, or forming part of, the vessel
• CPC Class Codes: H01K 5/00 Lamps for general lighting H01K9/00 - H01K13/00 take precedence

Abstract

The invention concerns a lamp having a reflector, a glass lid and a filament which is supported by supply wires. The supply wires pass from the interior of the lamp to the outside through the connecting area between the reflector and the glass lid. The reflector is thus almost 100 percent effective because there is no space required for a material collection marking a passage of supply wires or a socket for receiving a bulb. The light performance of the lamp is thus an optimum.

Claims

1. A lamp for use in an enclosed room, said lamp comprising:

a reflector having a peripheral rim, an interior reflector surface and an exterior reflector surface;

a glass lid having a peripheral flange extending over said reflector peripheral rim;

a filament supported by at least two supply leads;

said reflector peripheral rim and said glass lid peripheral flange being sealingly interconnected by a sealant along a fixing seam to thereby define an interior region of said lamp;

each said supply lead being guided from a position adjacent said reflector exterior surface through a peripheral connection point between said reflector rim and said glass lid flange into said lamp interior region; and

wherein said two supply leads are positioned parallel and juxtaposed to one another and secured in a clip-like formation over said reflector rim, said clip-like formation including said parallel, juxtaposed leads being held by an electrically insulated connecting element adjacent said reflector exterior surface, extending over said reflector rim, and along said reflector interior surface.

2. The lamp according to claim 1 wherein each said supply lead has a reduced cross-sectional area where said supply lead passes through the peripheral connection point between said reflector rim and said glass lid flange.

3. The lamp according to claim 1 wherein said glass lid flange extends downwards over said reflector rim and includes a circumferential groove.

4. The lamp according to claim 3 wherein said glass lid further includes a nipple protruding outwards from a front side of said glass lid.

5. The lamp according to claim 1 wherein said glass lid flange extends downwards over said reflector rim and includes a circumferential protrusion for use in securing said lamp within a holder.

6. The lamp according to claim 5 wherein said glass lid further includes a nipple protruding outwards from a front side of said glass lid.

7. The lamp according to claim 1 wherein said reflector is a cold light reflector.

8. The lamp according to claim 1 wherein said reflector exterior surface includes a mirrored surface.

9. The lamp according to claim 8 wherein said reflector further includes a protective layer disposed over said mirrored surface.

10. The lamp according to claim 1 wherein said reflector is a stepped reflector.

11. The lamp according to claim 1 wherein said supply leads run parallel to a middle plane of said glass lid and are spaced relative to each other such that said supply leads are positioned for making electrical contact with contact tongues of a frame when said lamp is received therein.

12. The lamp according to claim 1 wherein said supply leads run substantially perpendicular to a middle plane of said glass lid and are spaced relative to each other such that said supply leads are positioned for making electrical contact with contact tongues of a common socket for halogen bulbs.

13. The lamp according to claim 1 wherein said glass lid further includes a nipple protruding outwards from a front side of said glass lid.

14. The lamp according to claim 1 wherein said reflector is made from glass and said peripheral connection point is a fused seal.

15. The lamp according to claim 1 wherein said peripheral connection point is formed from a sealing material.

16. The lamp according to claim 1 wherein said sealant connecting said reflector peripheral rim and said glass lid peripheral flange includes direct melting of said glass lid and said reflector to one another.