Method of manufacturing a lamp assembly

• US 20050116650A1
• Filed: 10/29/2004
• Published: 06/02/2005
• Est. Priority Date: 06/21/1999
• Status: Active Grant

• Current Assignee: Philips IP Ventures B.V. (Koninklijke Philips N.V.)
• Original Assignee: Access Business Group International LLC (Alticor Incorporated)
• Inventors: Baarman, David W.
• Granted Patent: US 7,153,178 B2
• Time in Patent Office: Days
• US Class Current: 313/635
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: B01D 2201/301 Details of removable closures, lids, caps, filter heads
• CPC Class Codes: B01D 2201/34 Seals or gaskets for filtering elements for removable closures, lids, caps or filter heads B01D2201/304
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/325 Irradiation devices or lamp constructions
• CPC Class Codes: C02F 2201/006 Cartridges
• CPC Class Codes: C02F 2201/3222 Units using UV-light emitting diodes [LED]
• CPC Class Codes: C02F 2201/3228 Units having reflectors, e.g. coatings, baffles, plates, mirrors
• CPC Class Codes: C02F 2201/326 Lamp control systems
• CPC Class Codes: C02F 9/20 Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01J 5/50 Means forming part of the tube or lamps for the purpose of providing electrical connection to it
• CPC Class Codes: H01J 5/52 directly applied to or forming part of the vessel
• CPC Class Codes: H01J 5/54 supported by a separate part, e.g. base
• CPC Class Codes: H01J 61/56 One or more circuit elements structurally associated with the lamp
• CPC Class Codes: H01K 1/44 directly applied to, or forming part of, the vessel
• CPC Class Codes: H01K 1/46 supported by a separate part, e.g. base, cap
• CPC Class Codes: H05B 39/00 Circuit arrangements or apparatus for operating incandescent light sources structurally associated with the incandescent lamps H01K1/62
• CPC Class Codes: H05B 41/10 : magnetic only
• CPC Class Codes: H05B 41/24 : in which the lamp is fed by high frequency ac, or with separate oscillator frequencyH05B41/26 takes precedence
• CPC Class Codes: H05B 41/295 : with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
• CPC Class Codes: H05B 41/36 : Controlling
• CPC Class Codes: H05B 47/25 : Circuit arrangements for protecting against overcurrent
• CPC Class Codes: Y02B 20/00 : Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

A lamp assembly configured to inductively receive power from a primary coil. The lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in series with the lamp and the secondary to tune the circuit to resonance. The capacitor is preferably selected to have a reactance that is substantially equal to or slightly less than the reactance of the secondary and the impedance of the lamp. In a second aspect, the lamp assembly includes a sealed transparent sleeve that entirely encloses the lamp circuit so that the transparent sleeve is fully closed and unpenetrated. The transparent sleeve is preferably the lamp sleeve itself, with the secondary, capacitor and any desired starter mechanism disposed within its interior.

Claims

1. A method of manufacturing a lamp assembly comprising the steps of:

connecting a lamp to an inductive secondary, the lamp having an impedance and the secondary having a reactance,

connecting a capacitor in series with the lamp and the inductive secondary, the capacitor being selected to have a reactance that is substantially equal to or slightly less than the impedance of the lamp and the reactance of the secondary, whereby the capacitor, the lamp and the secondary operate substantially at resonance.

2. The method of claim 1 wherein said lamp connecting step includes the steps of:

connecting a first end of a filament wire to a first lead of the inductive secondary;

connecting a second end of a filament wire to a first lead of the capacitor; and

connecting a second lead of the capacitor to a second lead of the inductive secondary.

3. The method of claim 1 wherein said lamp connecting step includes the steps of:

connecting a first lamp electrode to a first lead of the inductive secondary;

connecting a second lamp electrode to a first lead of the capacitor; and

connecting a second lead of the capacitor to a second lead of the inductive secondary.

4. A lamp assembly for an inductively powered lamp comprising:

a base;

a lamp mounted to said base;

an outer sleeve mounted to said base about said lamp, said outer sleeve having a flange;

a flexible, resilient seal disposed between said base and said outer sleeve; and

a locking ring fitted over said sleeve and secured to said base, said locking ring entrapping said flange to retain said outer sleeve in place on said base about said lamp.

5. The lamp assembly of claim 4 wherein said base defines an annular channel, said flange seated within said annular channel.

6. The lamp assembly of claim 5 wherein said seal is fitted about said base within said annular channel.

7. The lamp assembly of claim 6 wherein said locking ring includes a radial portion and an axial portion, said radial portion engaging said flange, said axial portion being affixed to said base.

8. The lamp assembly of claim 7 wherein said base includes a generally cylindrical portion having an outer surface, said outer sleeve having a generally cylindrical portion having an inner surface, said seal being disposed between and directly engaging said outer surface of said base and said inner surface of said sleeve.

9. The lamp assembly of claim 8 wherein said seal is an o-ring seal