Flexible lighting device and support structure

An LED lighting strip comprising:

• a support structure comprising:
• a first support wall having a flat first inner reflective surface and a first outer surface opposite the first flat inner reflective surface,
• a second support wall opposite the first support wall and having a flat second inner reflective surface and a second outer surface opposite the flat first inner reflective surface, the flat first inner reflective surface facing, and parallel to, the flat second inner reflective surface,
• at least one mixing volume comprising a flexible transparent material enclosed by, and in contact with, both the flat first inner reflective surface and the flat second inner reflective surface, and
• a channel formed in the flexible transparent material;
• and
• a lighting device having a tube-shaped outer surface and two end surfaces, the lighting device disposed in the channel such that the mixing volume fully surrounds the tube-shaped outer surface of the lighting device, the lighting device comprising:
• a flexible transparent body that extends along a length direction of the lighting device, the flexible transparent body comprising particles dispersed in a transparent material, wherein the particles comprise both phosphor particles and light-scattering particles,
• a flexible substrate, embedded in the flexible transparent body, and extending along a length direction of the lighting device, wherein:
• the flexible substrate separates the flexible transparent body into a first portion that has a first concentration of the particles and a second portion that has a second concentration of the particles, the first concentration of the particles, including both the phosphor particles and light-scattering particles, is higher than the second concentration of the particles, including both the phosphor particles and the light-scattering particles, a first surface of the flexible substrate faces the first portion, a second surface of the flexible substrate faces the second portion, and the flexible substrate is at least semi-transparent,
• at least two light emitting elements arranged on the first surface of the flexible substrate along the length direction of the lighting device and configured to emit a main portion of its light emission toward the first portion of the flexible transparent body a second portion of its light emission through the flexible substrate such that a color and an intensity of light emitted through an outer surface of the flexible transparent body is uniform, and
• an optical separation member extending from the flat first inner reflective surface and the flat second inner reflective surface and towards the channel, wherein each of the optical separation members has a triangular-shaped cross section.