Tubular LED lamp with flexible circuit board

Patent metadata

Field	Value
Publication number	US-9551480-B2
Application number	US-201514835266-A
Country	US
Kind code	B2
Filing date	Aug 25, 2015
Priority date	Sep 23, 2014
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

There is herein described an LED lamp suitable for replacing conventional fluorescent lamps. The LED lamp has a tubular body and a flexible circuit board as compared to the rigid circuit boards used in other similar lamps. The flexible circuit board has a plurality of LEDs, electric circuitry for powering the LEDs, and a curvature that is maintained by a retention means. The curvature of the flexible circuit board substantially corresponds to the curvature of the tubular body which places the LEDs further away from the front surface of the lamp thereby allowing for improved diffusion and light distribution.

First claim

What is claimed is:

1. An LED lamp having a tubular body and a flexible circuit board, the flexible circuit board having a plurality of LEDs, electric circuitry for powering the LEDs, and a curvature that is maintained by a retention means, the curvature of the flexible circuit board substantially corresponding to a curvature of the tubular body, and wherein the retention means comprises two longitudinal ridges that extend along the length of the tubular body; the longitudinal ridges engaging and retaining the flexible circuit board.

2. An LED lamp having a tubular body and a flexible circuit board, the flexible circuit board having a plurality of LEDs, electric circuitry for powering the LEDs, and a curvature that is maintained by a retention means, the curvature of the flexible circuit board substantially corresponding to a curvature of the tubular body, wherein the retention means comprises at least one clip, the at least one clip comprising first and second retention members having arcuate shapes, the first retention member having opposed retention edges that extend inwardly, the second retention member having opposed ends that engage the opposed retention ends of the first retention member whereby the second retention member fits tightly within the first retention member, the circuit board being disposed between the first and second retention members.

3. The LED lamp of claim 2 wherein the at least one clip is maintained in position within the tubular body by an elastic force.

4. The LED lamp of claim 1 wherein the tubular body is a translucent plastic tube and the longitudinal ridges are integrally formed with the tube.

5. The LED lamp of claim 2 wherein the clip is formed of a resilient plastic material.

6. The LED lamp of claim 2 wherein a plurality of clips are attached to the flexible circuit board.

7. The LED lamp of claim 6 wherein the tubular body comprises a glass tube.

8. The LED lamp of claim 7 wherein the tubular body is transparent.

9. The LED lamp of claim 1 wherein the flexible circuit board comprises thermoformed polyethylene terephthalate (PET).

Assignees

• Speer Richard
• Grossman Kenneth
• Osram Sylvania Inc

Inventors

• Speer Richard
• Grossman Kenneth

Classifications

• F21V3/02

  characterised by the shape · CPC title

• F21V19/004 Primary

  by deformation of parts or snap action mountings, e.g. using clips · CPC title

• F21K9/275

  Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence) · CPC title

• F21K9/66

  Details of globes or covers forming part of the light source · CPC title

• F21V23/00 Primary

  Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)} · CPC title