Illuminating panel integrated into a traversable surface
AssigneesColas, Commissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsEric Coquelle, Issam Hasnaoui, Rémi De Bettignies
Life of this patent
Estimating the term…
Abstract
Disclosed is an illuminating panel, in particular integrated into a traversable surface, including, in succession, a first protective film arranged on the front face of the device, a first exterior encapsulating film, an interior encapsulating film, a second exterior encapsulating film, and a second protective film arranged on the rear face of the device, one of the films chosen from among the first exterior encapsulating film, the interior encapsulating film and the second exterior encapsulating film coating at least one active element suitable for emitting light. Also disclosed is a method for producing such a panel and a functional traversable surface with such a panel.
Claims20
A light slab able to be integrated into a trafficable pavement, comprising in succession:
- a first protective film, arranged on a front face of the slab, made of a first material;
- a first external encapsulating film, made of a second material;
- an internal encapsulating film, made of a third material;
- a second external encapsulating film, made of a fourth material;
- and
- a second protective film, arranged on a rear face of the slab, made of a fifth material,
- one of the films, chosen among the first external encapsulating film, the internal encapsulating film and the second external encapsulating film, coating at least one active element adapted to emit light,
- each active element comprising at least one light element on a support allowing the at least one light element to be powered, and
- the first material, the second material, the third material, the fourth material, and the fifth material having Young's moduli E1, E2, E3, E4, and E5, respectively, and coefficients of thermal expansion CTE1, CTE2, CTE3, CTE4, and CTE5, respectively,
- values of E1 and E5 differing by no more than 30%,
- values of E2 and E4 differing by no more than 30%,
- E1>E2 and E4<E5,
- CTE1 and CTE5 differing by no more than 30%,
- CTE2 and CTE4 differing by no more than 30%,
- CTE1<CTE2 and CTE4>CTE5.
A method for manufacturing a light slab that has, successively, a first protective film arranged on a front face of the slab and made of a first material, a first external encapsulating film made of a second material, an internal encapsulating film made of a third material, a second external encapsulating film made of a fourth material, and a second protective film arranged on a rear face of the slab and made of a fifth material, one of the films, chosen among the first external encapsulating film, the internal encapsulating film and the second external encapsulating film, coating at least one active element adapted to emit light, and each active element having at least one light element on a support allowing the at least one light element to be powered,
- the method comprising the following steps:
- (a) providing at least one active element adapted to emit light comprising at least one light element on a support allowing the at least one light element to be powered;
- (b) positioning the at least one active element adapted to emit light on a stack comprising the second protective film and the second external encapsulating film;
- (c) laminating the internal encapsulating film on the at least one active element in such a way as to fill at least in part the spaces between the active elements with the material of the internal encapsulating film, and to cover at least partially the at least one active element with the material of the internal encapsulating film;
- and
- (d) laminating on the internal encapsulating film a stack comprising the first external encapsulating film and the first protective film.
Dependencies are inferred from the claim text.