A lamp assembly including at least one light source, a housing formed from a first moisture barrier composition and a sealing cap formed from a second moisture barrier composition, wherein the at least one light source is arranged within the housing and the sealing cap is hermetically bonded to the housing and the at least one light source, and the sealing cap is arranged to enclose the at least one light source within a volume formed by the housing and the sealing cap.
1. A lamp assembly comprising:
at least one light source;
a housing formed from a first moisture barrier composition; and,
a sealing cap formed from a second moisture barrier composition, wherein said at least one light source is arranged within said housing and said sealing cap is hermetically bonded to said housing and said at least one light source, and said sealing cap is arranged to enclose said at least one light source within a volume formed by said housing and said sealing cap.
2. The lamp assembly of claim 1 , wherein said first moisture barrier composition comprises a blend of a first resin and a first sorbent and said second moisture barrier composition comprises a blend of a second resin and a second sorbent.
3. The lamp assembly of claim 2 , wherein said first resin and/or said second resin is a thermoplastic resin.
4. The lamp assembly of claim 2 , wherein said first resin and/or said second resin is selected from the group consisting of polyamide, polyolefin, styrenic polymer, polyester and homogeneous mixtures thereof.
5. The lamp assembly of claim 4 , wherein said polyolefin is selected from the group consisting of high density polyethylene, low density polyethylene and polypropylene.
6. The lamp assembly of claim 2 , wherein said first sorbent and/or said second sorbent is selected from the group consisting of a molecular sieve, a silica gel, an ion exchange resin, an activated alumina, a clay, a salt, a zeolite and mixtures thereof.
7. The lamp assembly of claim 1 , wherein said sealing cap is hermetically bonded to said housing and said at least one light source with welding.
8. The lamp assembly of claim 7 , wherein said welding is selected from the group consisting of: sonic welding, ultrasonic welding, spin welding, hot plate welding and vibration welding.
9. The lamp assembly of claim 1 , wherein said sealing cap is hermetically bonded to said housing and said at least one light source with an adhesive or an epoxy.
10. The lamp assembly of claim 1 , wherein said sealing cap is hermetically bonded to said housing and said at least one light source by molding said sealing cap over said housing and said at least one light source.
11. The lamp assembly of claim 1 , wherein said at least one light source comprises at least two electrical connections and said housing comprises at least two openings arranged to receive said at least two electrical connections therethrough, and wherein said at least two electrical connections and said at least two openings are hermetically encapsulated by a third moisture barrier composition.
12. The lamp assembly of claim 11 , wherein said third moisture barrier composition comprises a blend of a third resin and a third sorbent.
13. The lamp assembly of claim 12 , wherein said third resin is a thermoplastic resin.
14. The lamp assembly of claim 12 , wherein said third resin is selected from the group consisting of polyamide, polyolefin, styrenic polymer, polyester and homogeneous mixtures thereof.
15. The lamp assembly of claim 14 , wherein said polyolefin is selected from the group consisting of high density polyethylene, low density polyethylene and polypropylene.
16. The lamp assembly of claim 12 , wherein said third sorbent is selected from the group consisting of a molecular sieve, a silica gel, an ion exchange resin, an activated alumina, a clay, a salt, a zeolite and mixtures thereof.
17. The lamp assembly of claim 11 , wherein said at least two electrical connections and said at least two openings are hermetically encapsulated by said third moisture barrier composition with welding.
18. The lamp assembly of claim 17 , wherein said welding is selected from the group consisting of: sonic welding, ultrasonic welding, spin welding, hot plate welding and vibration welding.
19. The lamp assembly of claim 11 , wherein said at least two electrical connections and said at least two openings are hermetically encapsulated by said third moisture barrier composition with an adhesive or an epoxy.
20. The lamp assembly of claim 11 , wherein said at least two electrical connections and said at least two openings are hermetically encapsulated by said third moisture barrier composition by molding said third moisture barrier composition over said at least two electrical connections and said at least two openings.