Method for producing a tube lamp and corresponding tube lamp

Patent metadata

Field	Value
Publication number	US-11209130-B2
Application number	US-201916654593-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Oct 16, 2018
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A method for producing a tube lamp uses at least one leadframe. A leadframe is a flat structure which has two opposing surfaces extending substantially parallel and spaced apart by the sheet thickness. One or more stabilizing sections are applied to the leadframe. The leadframe is fastened with the stabilizing sections in a tubular housing of the tube lamp.

First claim

The invention claimed is:

1. A method for producing a tube lamp, the method comprising:
providing at least one leadframe, wherein the leadframe is substantially planar in form;
applying one or more stabilizing sections to the leadframe; and
fastening the leadframe in a tubular housing of the tube lamp using the stabilizing sections, wherein the one or more stabilizing sections are structurally distinct from the tubular housing.

2. The method according to claim 1 , wherein the one or more stabilizing sections are made from at least one of a thermoplastic material and a glass.

3. The method according to claim 2 , wherein fastening the leadframe in the tubular housing using the stabilizing sections comprises:
heating the stabilizing sections to a temperature at which the stabilizing sections are molten; and
adhering the leadframe to the tubular housing using the stabilizing sections.

4. The method according to claim 1 , wherein fastening the leadframe in the tubular housing using the stabilizing sections comprises:
applying an adhesive to at least several of the stabilizing sections; and
adhering the stabilizing sections of the leadframe to the tubular housing with the adhesive.

5. The method according to claim 1 , wherein applying one or more stabilizing sections to the leadframe comprises:
providing a material jet for the stabilizing section; and
moving the leadframe through the material jet.

6. The method according to claim 1 , wherein applying one or more stabilizing sections to the leadframe comprises:
positioning a bar or individual bar sections made from a material of the stabilizing section on the leadframe;
heating the bar or the bar sections; and
pressing the bar or the bar sections on the leadframe.

7. The method according to claim 1 , wherein:
providing at least one leadframe comprises providing a panel having a plurality of leadframes which are arranged adjacent to one another; and
applying one or more stabilizing sections to the leadframe comprises applying at least one stabilizing section as a continuous stabilizing section over at least two leadframes arranged adjacent to one another.

8. The method according to claim 7 , wherein applying at least one stabilizing section as a continuous stabilizing section over at least two leadframes arranged adjacent to one another comprises providing at least one continuous stabilizing section with at least one predefined breaking point.

9. A tube lamp comprising:
a tubular housing;
a light engine arranged at least partially inside the tubular housing, the light engine comprising a leadframe, wherein the leadframe is substantially planar in form; and
one or more stabilizing sections mounted on the leadframe, wherein:
the one or more stabilizing sections are structurally distinct from the tubular housing; and
the leadframe is fastened in the tubular housing using the one or more stabilizing sections.

10. The tube lamp according to claim 9 , wherein the one or more stabilizing sections are made from a thermoplastic material.

11. The tube lamp according to claim 9 , wherein the leadframe is adhered to the tubular housing by the one or more stabilizing sections.

12. The tube lamp according to claim 9 , wherein the leadframe is adhered to the tubular housing by an adhesive applied to the one or more stabilizing sections.

13. The tube lamp according to claim 9 , wherein the one or more stabilizing sections are made from a glass.

14. The tube lamp according to claim 9 , wherein the one or more stabilizing sections are made from an electrically insulating material.

15. The tube lamp according to claim 9 , wherein the leadframe is configured as an electrically conductive structure that functions without an electrically insulating substrate or an electrically insulating flexible layer.

16. The tube lamp according to claim 9 , wherein the leadframe is comprised of an electrically conductive metal.

17. The tube lamp according to claim 9 , wherein the light engine further comprises at least one semiconductor light element arranged on and electrically connected to the leadframe.

18. The tube lamp according to claim 9 , further comprising at least one electronic driver component arranged on and electrically connected to the leadframe.

19. The tube lamp according to claim 9 , wherein the one or more stabilizing sections extend over a width of the leadframe, substantially perpendicular to a longitudinal length of the leadframe.

20. The tube lamp according to claim 9 , wherein the one or more stabilizing sections are configured to both:
stabilize the leadframe inside the tubular housing; and
bridge spacing between the leadframe and the tubular housing.

21. The tube lamp according to claim 9 , wherein the one or more stabilizing sections are mounted on at least two opposing sides of the leadframe.

22. The tube lamp according to claim 9 , wherein the one or more stabilizing sections extend through an interior space of the leadframe, contacting at least two opposing sides of the leadframe.

Assignees

• Ledvance Gmbh

Inventors

• Rosenbauer Georg
• Rieder Bernhard
• Streppel Henrike
• Hammer Andreas
• Scheipl Georg
• Eckert Klaus

Classifications

• F21K9/278 Primary

  Arrangement or mounting of circuit elements integrated in the light source · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• B23P21/00 Primary

  Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with program control · CPC title

• F21V19/005

  by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound · CPC title

• F21K9/90

  Methods of manufacture · CPC title