Backlighting device, particularly for head-up display, and head-up display for motor vehicle
AssigneeValeo Comfort and Driving Assistance
InventorLenaic Pierre
Life of this patent
Estimating the term…
Abstract
The invention relates to a backlighting device (14), particularly for head-up display. Said device includes: at least one light-emitting diode (16), emitting light beams; an optical system (20) for shaping light beams; and a light diffuser (22), receiving the shaped light beams and said diffuser also comprises a heat sink (18) formed of at least two parts including a base plate (50) and at least one strip (52) that is attached onto said base plate. The strip comprises at least one fold (90) for forming at least one cooling fin (80) and at least one area (60) intended for thermal contact with said base plate (50).
Claims18
A head-up display, comprising:
- a head-up display housing;
- an image generation device;
- and
- at least one reflecting mirror,
- wherein the image generation device is held in the head-up display housing and comprises a liquid crystal screen and a backlighting device for the liquid crystal screen;
- wherein the backlighting device comprises:
- at least one light-emitting diode which emits light beams;
- an optical system for shaping the light beams;
- a light diffuser receiving the shaped light beams;
- and
- a heat sink made in at least two parts, comprising a base plate and at least one strip fastened to said base plate, the strip comprising at least one bend to form at least one cooling fin and at least one area that comes into thermal contact with said base plate,
- wherein the heat sink projects outside the head-up display housing, and
- wherein a distance between the at least one light-emitting diode and the optical system is less than 0.7 mm.
Dependencies are inferred from the claim text.