Elongated flexible lighting device based on solid-state lighting technology
There is presented a lighting device ( 1 ) comprising: an elongated flexible core ( 2 ) having a polygonal transverse cross section; and a flexible circuit strip ( 3 ) having several solid-state lighting elements ( 4 ) mounted thereon, the flexible circuit strip ( 3 ) being helically wound around the core ( 2 ). There is also presented a method for producing such a lighting device ( 1 ).
1. A lighting device comprising:
an elongated flexible core having a polygonal transverse cross section; and
a flexible circuit strip having several solid-state lighting elements mounted thereon, the flexible circuit strip being helically wound around the core,
further comprising a first set of connectors mounted on the flexible circuit strip, said first set of connectors and the solid-state lighting elements are arranged on different sides of the core, the first set of connectors being adapted for electrically connecting the solid-state lighting elements to a power supply.
2. The lighting device according to claim 1 , wherein the lighting device is bendable in at least two non-parallel directions.
3. The lighting device according to claim 1 , wherein the core has a modulus of elasticity in the range from 0.001 GPa to 1 GPa, alternatively from 0.1 GPa to 1 GPa.
4. The lighting device according to claim 1 , wherein the core has a yield strength in the range from 5 MPa to 50 MPa, alternatively from 25 MPa to 50 MPa.
5. The lighting device according to claim 1 , wherein the core is made of a plastic material.
6. The lighting device according to claim 1 , further comprising a flexible light-transmissive housing, the core and the flexible circuit strip being arranged inside the housing.
7. The lighting device according to claim 5 , further comprising a wire electrically connecting the first set of connectors to each other, said wire extending along a side of the core where the first set of connectors are arranged.
8. The lighting device according to claim 5 , further comprising a second set of connectors mounted on the flexible circuit strip, the second set of connectors being adapted for electrically connecting the solid-state lighting elements to a power supply and arranged on a different side of the core than the first set of connectors and the solid-state lighting elements.
9. The lighting device according to claim 8 , further comprising a wire electrically connecting the second set of connectors to each other, said wire extending along a side of the core where the second set of connectors are arranged.