Electrodeless neon light module for vehicle lighting systems

• US 6,118,226 A
• Filed: 07/31/1998
• Issued: 09/12/2000
• Est. Priority Date: 07/31/1998
• Status: Expired due to Fees

• Current Assignee: Federal-Mogul Worldwide Incorporated (Apollo Global Management, Inc.)
• Original Assignee: Federal-Mogul Worldwide Incorporated (Apollo Global Management, Inc.)
• Inventors: Bodem, Jack D. Jr., Kohne, Robert L.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): Lee, Wilson
• Application Number:
  US09/127,240
• Time in Patent Office: 774 Days
• Field of Search: 315/248, 315/80, 315/82, 313/160, 313/161, 313/318.01, 362/226, 362/265, 362/263
• US Class Current: 315/248
• CPC Class Codes: B60Q 1/0094 Arrangement of electronic circuits separated from the light source, e.g. mounting of housings for starter circuits for discharge lamps arrangements being part of the light source holder F21V17/06, F21S43/195
• CPC Class Codes: B60Q 1/26 the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
• CPC Class Codes: H01J 65/048 the field being produced by using an excitation coil

Abstract

A light assembly (10) for a vehicle includes a housing (12) having a light-transmissive cover (18) and an RF emission gas discharge light source (22) provided as a self-contained module mountable in the housing (12). The module (22) includes an envelope (24) filled with an RF excitable gas (27) and an RF induction coil (28). The envelope (24) and coil (28) are fixed in working relation to one another in a common base (40). The base (40) also supports an electrical connector (32) that leads to the coil (28) and that mates with a corresponding connector (34) leading from the vehicle power supply (38). The module (22) and housing (12) have mutually connectable mounting portions (48, 50) for mounting the module (22) on the housing (12).

Claims

1. A vehicle light assembly comprising:

a light housing having a light-transmissive cover for closing said housing; and

a self-contained electrodeless gas discharge light source module including a sealed envelope that is at least partly light transmissive, an excitable gas sealed within said envelope, an RF induction coil external to said sealed envelope, and a base supporting said sealed envelope and said RF induction coil in operative relation to one another independently of said housing, with said module being mounted to said housing by said base such that said envelope and said induction coil are mounted on said housing via said base.

2. The assembly of claim 1 further characterized by said base supporting said RF induction coil in surrounding relation to said envelope.

3. The assembly of claim 2 further characterized by said envelope and said RF induction coil being inseparable from said base.

4. The assembly of claim 1 further characterized by said base including a mounting portion attachable to said housing.

5. The assembly of claim 1 further characterized by said housing and said base including cooperating mounting portions that, when engaged, connect said module to said housing.

6. The assembly of claim 1 further characterized by said gas comprising primarily at least one gas selected from the group consisting of neon and xenon.

7. The assembly of claim 1 further characterized by said module including an electrical connector supported by said base and operatively coupled to said RF induction coil.

8. The assembly of claim 1 further characterized by a portion of said envelope being exposed by said base and said module including an RF emission shield supported on said base independently of said housing in covering relation to said exposed portion of said envelope.

9. The assembly of claim 1 further characterized by said assembly including a plurality of said housings and a corresponding plurality of said modules mounted on said housings.

10. The assembly of claim 9 further characterized by said assembly including an RF generating electronic circuit coupled to said induction coil.

11. The assembly of claim 10 further characterized by said circuit being supported by said base.

12. The assembly of claim 10 further characterized by said circuit being external to said base.

13. The assembly of claim 12 further characterized by said assembly including a plurality of said housings and a plurality of said modules and wherein said circuit is external to said modules and operatively coupled to at least two of said modules.

14. The assembly of claim 1 further characterized by said module and said housing having mutually connectable mounting portions.

15. The assembly of claim 1 further characterized by said module having a predetermined overall length measuring about 2.5 inches or less.

16. An integrated electrodeless gas discharge lighting module for use with a light housing having a connecting portion for mounting of the lighting module on the housing, said lighting module comprising a sealed envelope that is at least partly light transmissive, an excitable gas sealed within said envelope, an RF induction coil external to said sealed envelope, an electrical power transmission connector associated with said RF induction coil, and a base mounting said electrical power transmission connector and supporting said sealed envelope and said RF induction coil in operative working relation to one another with said RF induction coil surrounding said envelope, said base including a connecting portion that is mutually engagable with the connecting portion of the light light housing, whereby said envelope, induction coil, and connector can be mounted on the light housing by connecting said base to the housing via said connecting portions.

17. A method of manufacturing a vehicle lighting system having an electrodeless gas discharge illumination source, comprising:

preparing a housing having a light-transmissive cover closing the housing and including a mounting portion for mounting an illumination source within the housing;

preparing a sealed envelope that is at least partially light transmissive and that contains an excitable gas;

disposing an RF induction coil in operative working relation to the envelope;

supporting the coil and envelope in a common base formed separately from the housing to provide a self-contained illumination module;

providing mounting portions on the module connectable with the mounting portion of the housing; and

assembling the module with the housing by connecting their mounting portions such that the induction coil and envelope are mounted on the housing via the common base.

18. The method of claim 17 further characterized by integrating an electrical connector into the base of the module associated with the RF induction coil.

19. The method of claim 17 further characterized by integrating an electrical drive circuit into the base of the module coupled electrically with the RF induction coil.

20. The method of claim 17 further characterized by constructing and arranging the components of the module in such manner as to limit the overall length of the module to about 2.5 inches or less and a width of about 1.5 inches or less.