LIGHT EMITTING STRIP

• US 20200132263A1
• Filed: 07/03/2018
• Published: 04/30/2020
• Est. Priority Date: 07/13/2017
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Signify Holding B.V. (Signify N.V.)
• Inventors: ANSEMS, JOHANNES PETRUS MARIA, VISSENBERG, MICHEL CORNELIS JOSEPHUS
• Granted Patent: US 11,204,139 B2
• Time in Patent Office: Days
• CPC Class Codes: F21K 9/90 Methods of manufacture
• CPC Class Codes: F21S 4/26 of rope form, e.g. LED lighting ropes, or of tubular form
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present invention relates to a light emitting strip (10), comprising: an elongate body (12); at least one light source (16) adapted to emit light into the elongate body; and a gap (24) in the elongate body, which gap is arranged in front of the at least one light source, wherein the gap is adapted to omnidirectionally distribute, in a plane (26) perpendicular to a longitudinal direction of the light emitting strip, light emitted by the at least one light source. The present invention also relates to a method of manufacturing a light emitting strip (10).

Claims

1. A light emitting strip, comprising:

an elongate body;

at least one light source adapted to emit light into the elongate body; and

a gap in the elongate body, which gap is arranged in front of the at least one light source, wherein the gap is adapted to omnidirectionally distribute, in a plane perpendicular to a longitudinal direction of the light emitting strip, light emitted by the at least one light source and,

wherein said light emitting strip is having a first interface between the elongate body and the gap, which first interface is proximal to the at least one light source and dual arches-shaped, and a second interface between the elongate body and the gap, which second interface is distal to the at least one light source.

2. A light emitting strip according to claim 1, wherein the gap is arranged such that a first part of the light emitted by the at least one light source passes the gap and such that a second part of the light emitted by the at least one light source is reflected back towards a plane in which the at least one light source is situated but preferably not towards the at least one light source itself or towards any support for the at least one light source.

3. A light emitting strip according to claim 1, wherein the second interface is single arch-shaped.

4. A light emitting strip according to claim 2, wherein the second part is reflected back by at least two internal reflections at an interface between the elongate body and the gap.

5. A light emitting strip according to claim 1, wherein the at least one light source together with any support for the at least one light source is arranged in the elongate body.

6. A light emitting strip according to claim 1, wherein the elongate body has a circular cross-section.

7. A light emitting strip according to claim 1, further comprising an elongate diffuse outer part at least partly encircling the elongate body.

8. A light emitting strip according to claim 7, wherein the thickness of the elongate diffuse outer part varies along the circumferential direction of the elongate diffuse outer part.

9. A light emitting strip according to claim 7, wherein the elongate diffuse outer part comprises scattering particles, and wherein the density of scattering particles varies along the circumferential direction of the elongate diffuse outer part.

10. A light emitting strip according to claim 7, wherein the elongate body and the elongate diffuse outer part are co-extruded.

11. A method of manufacturing a light emitting strip, which method comprises:

co-extruding a central elongate body and an elongate diffuse outer part; and

providing at least one light source adapted to emit light into the elongate body,

wherein a gap in the elongate body is arranged in front of the at least one light source, and wherein the gap is adapted to omnidirectionally distribute, in a plane perpendicular to a longitudinal direction of the light emitting strip, light emitted by the at least one light source and wherein the light emitting strip is having a first interface between the elongate body and the gap, which first interface is proximal to the at least one light source and dual arches-shaped, and a second interface between the elongate body and the gap, which second interface is distal to the at least one light source.