Lamp with electrical components embedded in an insulation compound

• US 9,343,286 B2
• Filed: 04/12/2013
• Issued: 05/17/2016
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: Lumileds LLC (Apollo Global Management, Inc.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Dabringhauusen, Lars, Mertens, Juergen Gerhard, Duschl, Anton
• Primary Examiner(s): HINES, ANNE M
• Application Number:
  US14/397,331
• Publication Number:
  US 20150145412A1
• Time in Patent Office: 1,131 Days
• US Class Current: 1/1
• CPC Class Codes: F21S 41/172 High-intensity discharge light sources
• CPC Class Codes: F21S 41/19 Attachment of light sources or lamp holders achieving variable light distribution by movable light sources F21S41/657
• CPC Class Codes: H01J 5/54 supported by a separate part, e.g. base
• CPC Class Codes: H01J 5/56 Shape of the separate part
• CPC Class Codes: H01J 61/30 Vessels; Containers
• CPC Class Codes: H01J 61/54 Igniting arrangements, e.g. promoting ionisation for starting
• CPC Class Codes: H01J 61/56 One or more circuit elements structurally associated with the lamp
• CPC Class Codes: H01J 9/30 Manufacture of bases

Abstract

A lamp (10) is described comprising a burner (14) fixed to a lamp base (12). The lamp base (12) includes a top wall oriented towards the burner (14). Within the top wall, an opening (28) is provided. The lamp base (12) further comprises an insulation chamber (42) where an electrical component, e. g. a transformer (54), is embedded within an insulation compound (43). In order to prevent possibly spilled insulation compound from leaking through the opening (28), a raised retention wall (46) is provided around the opening.

Claims

1. Lamp comprising

a burner fixed to a lamp base,

where the lamp base comprises a housing element including a top wall element oriented towards said burner, where said top wall element comprises at least one opening,

where said lamp base further comprises an insulation chamber, where an electrical component is embedded within an insulation compound,

and where a raised retention wall is provided surrounding said opening, said raised retention wall extending from the top wall element into the housing element.

2. Lamp according to claim 1, where

said top wall comprises a plurality of openings,

where each of said openings is provided with a surrounding retention wall.

3. Lamp according to claim 1, where said housing element comprises a holder element comprising side walls of said insulation chamber.

4. Lamp according to claim 3, where said holder element further comprises said raised retention wall provided around said opening.

5. Lamp according to claim 1, where said housing element comprises a holder element made out of an electrically insulating material arranged within an outer metal housing.

6. Lamp according to claim 1, where said insulation compound is a silicone containing insulation compound.

7. Lamp according to claim 1, where said lamp base comprises an electronic operating circuit to supply electrical power to said burner.

8. Lamp according to claim 7, where a metal shield element is provided within said lamp base to shield electrical components or contacts of said electronic operating circuit.

9. Lamp according to claim 8, where said metal shield element is arranged between a transformer and/or coil component and further electronic components of said electronic operating circuit.

10. Lamp according to claim 8, where

said housing element comprises a connector electrically connected to contact path elements extending within said housing element,

where said metal shield element is arranged to at least partly cover said connector and/or said contact path elements.

11. Method of manufacturing a lamp, the method comprising:

providing a lamp base for a burner, said lamp base including a top wall oriented towards said burner, where said top wall comprises at least one opening,

filling at least partially an insulation chamber within said lamp base with an insulation compound, thereby embedding an electrical component arranged within said insulation chamber, and

providing a raised retention wall surrounding said opening, said raised retention wall extending from the top wall element into the housing element, thereby preventing said insulation compound spilled from said insulation chamber from leaking through said opening.

12. Method according to claim 11, further comprising holding the lamp base in an orientation with said top wall below said insulation chamber during said filling at least partially said insulation chamber.

13. Method according to claim 11, where

said filling at least partially said insulation chamber comprises introducing said insulation compound into said insulation chamber in a fluid state, the method further comprising

curing said insulation compound in a curing treatment.