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1. ES2683918 - Dispositivo de iluminación que combina un led blanco y una lámina difusora

Office Spain
Application Number 06742563
Application Date 23.03.2006
Publication Number 2683918
Publication Date 28.09.2018
Publication Kind T3
IPC
G09F 13/04
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
13Illuminated signs; Luminous advertising
04Signs, boards, or panels, illuminated from behind the insignia
F21V 7/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
7Reflectors for light sources
G02B 5/02
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
02Diffusing elements; Afocal elements
B60R 13/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
13Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
C08F 265/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
265Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/181
04on to polymers of esters
06Polymerisation of acrylate or methacrylate esters on to polymers thereof
C08F 279/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
279Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/183
02on to polymers of conjugated dienes
CPC
G09F 13/22
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
13Illuminated signs; Luminous advertising
20with luminescent surfaces or parts
22electroluminescent
G09F 13/0409
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
13Illuminated signs; Luminous advertising
04Signs, boards or panels, illuminated from behind the insignia
0409Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency
Applicants ARKEMA FRANCE
Inventors
Agents ELZABURU, S.L.P ELZABURU, S.L.P
Priority Data 0502985 25.03.2005 FR
686841 P 02.06.2005 US
Title
(ES) Dispositivo de iluminación que combina un led blanco y una lámina difusora
Abstract
(ES)

Dispositivo luminoso que comprende, por lo menos, un LED blanco que tiene un flujo luminoso mayor de 3 Lm y una cubierta realizada de un plástico transparente en la que se dispersan partículas de dispersión con un contenido del 0,3% al 5%, y dicha cubierta tiene, cuando el LED está apagado, una luminosidad L menor de 40 y, cuando el LED está iluminado, una luminosidad L mayor de 55, un valor a* de entre -5 y +5 y un valor b* de entre -5 y +5, caracterizado por que la diferencia entre los índices de refracción, medidos de acuerdo con el estándar ASTM D- 542, de las partículas de dispersión y del plástico transparente es mayor de 0,02, y los tres valores L, a*, b* se utilizan para caracterizar el color principal en el sistema CIELAB, y por que la cubierta es en forma de una sola capa, y por que el plástico transparente está elegida de entre poliestireno cristalino, tereftalato de polietileno, una poliolefina transparente, especialmente clarificada, un polipropileno clarificado, PMMA, una poliamida transparente o policarbonato, y por que las partículas de dispersión están elegidas de entre partículas de poliamida, partículas de PTFE, partículas reticuladas a base de estireno, partículas reticuladas a base de metacrilato de metilo o partículas de silicona, o están elegidas de entre partículas de BaSO4, TiO2, ZnO, CaCO3, MgO o Al2O3, o microesferas de vidrio huecas.

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