Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
  • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
  • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
  • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
  • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
  • B60Q3/74—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q2500/00—Special features or arrangements of vehicle interior lamps
  • B60Q2500/30—Arrangements for illuminating different zones in the vehicle, e.g. front/rear, different seats

Definitions

• the invention relates to an interior light according to the generic features of claim 1.
• a generic interior light is known for example from the E-Class from Mercedes-Benz.
• An interior light is arranged in the roof control unit, which has a light bulb as a normal lighting function, the light of which is scattered into the vehicle interior through a conventional diffusing screen.
• an ambient luminaire is provided as a second luminaire, which consists of a curved light guide into which the light from a light-emitting diode is introduced laterally. This light is guided through the light guide and emerges as ambient light at the fault points over the entire surface of the light guide.
• DE 100 32 927 AI and DE 101 49 044 AI disclose a lighting device for illuminating the interior of a motor vehicle.
• the lighting device has at least one lamp and at least one plate-shaped or rod-shaped light guide arranged with its light coupling surface in the light-emitting region of the lamp.
• the light guide has a plurality of light coupling points spaced apart from the light coupling surface.
• the light guide In at least one beam path running from the light coupling-in area to one of the light coupling-out points, the light guide has at least one reducing point which forms a diaphragm and is arranged and / or designed such that the light intensity of the light emerging at the individual light coupling-out points is attenuated differently is.
• the reducing point is provided with an opaque cover at least on the light coupling-out side of the light guide.
• the disadvantage is that the two lights in the roof control panel require a lot of installation space. On the one hand, the normal interior lighting and then the ambient lighting on the right and left in the roof control panel, which surrounds the roof control unit as a light ring.
• the object of the invention is therefore to arrange an interior lamp that combines various lighting functions in a small space.
• 1 is a roof control panel with interior lighting
• Fig. 2 is a schematic sectional view of an interior lamp with normal and ambient light function.
• Fig. 3 is a schematic sectional view of an interior light with normal light function with an integrated reading light and ambient light function.
• the 1 shows a roof control part 1 which has an area with control elements 3 for operating the interior lighting and an interior light 2.
• This interior light 2 has a normal and an ambient light function.
• the normal light function has, as normal interior lighting 2, a diffusing screen 12 as a cover which scatters the light from the light bulb 11 arranged below the diffusing screen 12 to the outside.
• the diffusing screen 12 is a light guide 4.
• Light 6 is laterally coupled into this light guide 4 by a light-emitting diode 6, which propagates along the light guide 6 and is coupled out as ambient light at the provided defects 9 in the light guide 6.
• the surface Structuring can, for example, have a regular or irregular roughness, microprisms, grooves, a varnish or the like, which differs from a smooth surface, at which a total reflection of the light guided in the light guide 6 does not occur or only occurs to a limited extent and thus the light decouples from the light guide 6.
• the ambient light function 6 is only active when the normal light function 11 is switched off.
• the normal light function 11 is only active when the ambient light function 6 is switched off.
• the various light functions 6, 11 can be switched on by means of a control element provided for this purpose. However, it can also be switched on automatically, for example when the door is opened, the normal interior lighting 2 is switched on during the day, while the ambient lighting function 4 is activated via a light or rain sensor or when the driving lights are switched on.
• the normal light function 2 is formed by an incandescent lamp 11, the light of which is directed by a reflector 7 in the direction of the lens 12.
• Scattering points 8 are arranged on the inside of this lens 12, which scatter the light into the interior in all directions. These scattering points 8 are usually arranged on the inside of the lens 12 so that the interior lamp 2 has a smooth surface as desired by the design.
• the scattering points 8 can also be located on the surface of the scattering disc 12 and only scatter the light into the interior of the vehicle after the light has passed through the scattering disc 12.
• the normal 2 and the ambient light function 4 are switched on independently of each other.
• the normal light function 11 When the normal light function 11 is activated, the ambient lighting tion 6 issued and the ambient light function 6, the normal light function 11 is issued.
• a light-emitting diode 6 is activated, the light of which is directed into the light guide 12, which serves as a diffuser 12 in the normal light function 2.
• This light is coupled into the light guide from below into the light guide at the coupling point a.
• the coupling can also take place from the side or from above. This depends on the direction in which the coupling point a is formed.
• This light is guided in the light guide 12 from its entry point a to the other end of the light guide n. However, there are also a plurality of coupling points a to n for the light.
• the light can then be introduced into the light guide at a, b and / or n.
• a mirroring can also be arranged at the coupling point n, so that the light is directed back to the entry point a.
• the defect 9 can be arranged on the surface of the light guide 12 and can have a regular or irregular roughness, microprisms, grooves and / or a coating or similar coating which deviates from a smooth surface and on which a total reflection of the light guided in the light guide 6 does not or occurs only to a limited extent.
• the fault point 9 is preferably arranged in the interior of the light guide 12 and is formed, for example, by scattering bodies, microparticles located there or by points at which the light guide resistance is increased compared to an area adjacent to it.
• the at least one fault location 9 thus represents a control element which enables the developer to adapt the light distribution on the light coupling surface of the light guide 12 to a light distribution desired for the respective lighting task by appropriately arranging and / or designing the fault locations 9. to fit.
• the defects 9 it is possible, in particular, for the defects 9 to be arranged and / or designed in such a way that the light coupling surface of the light guide 12 is adapted to a light distribution desired for the respective lighting task.
• the defects 8 are arranged and / or configured in such a way that a uniform light emission or light intensity distribution for the human eye is achieved on the light coupling surface of the light guide 12.
• the light scattered from the interference points 8 into the interior light 2 is scattered back by the reflector 7 to the light guide 12 and from there it reaches the interior of the vehicle in analogy to the normal light function 2.
• This reflector 7 brings about a greater light yield of the ambient light function 4 due to the back reflection of the light.
• the light guide 12 is preferably made of transparent plastic, so that it is flexible and allows the light emitted in the normal lighting function 2 to pass directly into the interior.
• the inside of the lens 12 is corrugated for the uniform scattering of the light into the vehicle interior.
• the lens 12 can be adapted to any surface, so that there are no limits to the design in terms of arrangement and configuration.
• the defects 8 can also take over the function of the defects 9 if a light guide is used which has the property of coupling out the light at these defects 8 from the light guide.
• the interior light 2 with a normal lighting function 2 and an ambient lighting function 4 for ambient lighting of the interior can also be realized using OLED technology.
• OLEDs are transparent plastic disks that emit light when a voltage is applied. It is then an incandescent lamp 11 for the normal lighting function 2 provided that shines through a disc arranged as a diffuser 12 and the disc 12 for the ambient lighting function lights up by applying a voltage.
• a reading light 5 can be arranged under the light guide 6 designed as a diffuser 12 in addition to the normal interior light 2.
• This reading light 5 then has its own illuminant 11a.
• the reading lamp 5 assigned part of the lens 12 other scattering.
• Impurities 10 as part of the normal interior light 2, so that the light from the reading light source 11a is more directionally scattered into the vehicle interior due to the impurities 10 of the lens 12 in accordance with a good reading light.
• the interference points 8, 9 are designed in such a way that the light outcoupling points, which are preferably connected to one another to form a continuous light decoupling surface, have essentially the same light intensity.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

Family

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Family Applications (1)

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Cited By (11)

Families Citing this family (13)

Citations (8)

• 2003
  • 2003-07-15 DE DE10332158A patent/DE10332158A1/de not_active Withdrawn
• 2004
  • 2004-07-08 JP JP2005518217A patent/JP2006510547A/ja not_active Abandoned
  • 2004-07-08 WO PCT/EP2004/007499 patent/WO2005007450A1/de active Application Filing
  • 2004-07-08 EP EP04740802A patent/EP1578643A1/de not_active Withdrawn

Patent Citations (8)

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