In an instrument panel (1), a LED backlighting device (10) has at least one LED source (21), the optical axis (22) of which corresponds to the direction in which the intensity of the emitted light is maximum; the light of the LED source (21) is reflected onto a graphic area (5a) by means of a first and a second reflecting surface (16, 25); the first surface (16) defines a first cavity (13) and is aligned with the graphic area (5a) along an illumination axis (17) spaced apart from the optical axis (22), while the second surface (27) is aligned with the LED source (21) along the optical axis (22) and defines a second cavity (25) communicating with the first cavity (13) through an aperture (26); the second surface (27) is a cylindrical surface, defined by an elliptical generatrix and configured so as to block the light rays that would be directed from the LED source (21) onto the graphic area (5a).
Vehicle instrument panel equipped with an LED backlighting device for lighting a graphic area
2015-09-30
Patent
Elektronische Ressource
Englisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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