Interior lamp, especially for a vehicle

• US 20060215414A1
• Filed: 07/08/2004
• Published: 09/28/2006
• Est. Priority Date: 07/15/2003
• Status: Abandoned Application

• Current Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Original Assignee: Daimler AG (Mercedes-Benz Group AG)
• Inventors: Lauber, Carsten
• Application Number:
  US10/534,693
• Publication Number:
  US 20060215414A1
• Time in Patent Office: Days
• US Class Current: 362/511
• CPC Class Codes: B60Q 3/62 using light guides
• CPC Class Codes: B60Q 3/74 for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps general lighting mounted on specific fittings B60Q3/20; general lighting for mass transit vehicles B60Q3/43

Abstract

An interior lamp, especially for a vehicle, which has a normal illuminating function and an ambient illuminating function for the purpose of providing ambient illumination for the interior. An incandescent lamp provides the normal illuminating function. Light from the lamp radiates through an optical waveguide arranged as a diffusing screen.

Claims

1. An interior lamp for a vehicle, which has a normal illuminating function and an ambient illuminating function for the purpose of providing ambient illumination for the interior,

said lamp comprising;

an incandescent lamp providing normal illuminating function; and

an optical waveguide arranged as a diffusing screen wherein light from said lamp radiates through said diffusing screen.

2. The interior lamp as claimed in claim 1, further comprising at least one light-emitting diode for providing said ambient illumination, wherein light from said light-emitting diode is injected into the optical waveguide and said light is output at a plurality of interference points.

3. The interior lamp as claimed in claim 1, further comprising

a further luminous device arranged as a reading lamp below the diffusing screen to provide a further illuminating function in addition to said normal illuminating function.

4. The interior lamp as claimed in claim 3,

wherein the diffusing screen is associated with the incandescent lamp by first diffusing points, and the further luminous device is associated with the diffusing screen by second diffusing points.

5. The interior lamp as claimed in claim 2, further comprising:

in that a reflector arranged such that light diffused by the interference points into the lamp is reflected back to the optical waveguide (12) such that it passes into the vehicle interior in the same manner as the normal light function.

6. The interior lamp as claimed in claim 2, wherein

the interference points are formed to provide light output points in order to form a continuous light output area, have essentially a constant light intensity.

7. The interior lamp as claimed in claim 1 wherein

the normal and the ambient light function are switched on independently of one another, the ambient illumination being switched off when the normal light function (11) is activated, and the normal light function being switched off during activation of the ambient light function.

8. An interior lamp for a vehicle, which has a normal illuminating function and an ambient illuminating function for the purpose of providing ambient illumination for the interior, said lamp comprising

an incandescent lamp for providing the normal illuminating function;

and

a disk arranged as a diffusing screen for light from said lamp wherein said disk emits light for the ambient illuminating function by a voltage being applied.