DE102013012481A1 - Motor vehicle roof window element with a lighting arrangement - Google Patents

Abstract

The present invention relates to a roof window element for a motor vehicle, in particular a passenger car, with a pane (1) and a lighting arrangement (1.1, 1.11), which has an irregular pattern.

Description

The present invention relates to a roof window element for a motor vehicle with a pane and a lighting arrangement, a motor vehicle, in particular a passenger car, with such a roof window element and a method for producing such a roof window element.

From the DE 10 2010 049 355 A1 is a cover sheet for a panoramic window of a motor vehicle having a free end portion is known, on which a light source is arranged, which acts in a solid position of the cover sheet as a reading lamp and in a retracted position of the cover sheet as ambient interior lighting.

An object of an embodiment of the present invention is to provide an improved motor vehicle.

This object is achieved by a roof window element with the features of claim 1. Claims 13 and 14 provide a motor vehicle with a corresponding roof window element or a method for producing a corresponding roof window element under protection. Advantageous embodiments of the invention are the subject of the dependent claims.

A roof window element for a motor vehicle according to one aspect of the present invention comprises a disk. The disc can be formed in one or more parts. In one embodiment, the pane is only partially or at least substantially, transparent or translucent over the entire surface, preferably for one or more, in particular at least substantially all wavelengths of the visible light spectrum. The disc may be permanently or only temporarily transparent, especially off, preferably darkened, especially self-tinting. In one embodiment, the disc is made of glass and / or plastic. The disc can be constructed in one or more layers. In one embodiment, the disc forms, at least substantially, the roof area of the motor vehicle or is designed as a so-called Dachpanoramascheibe. Preferably, the disc occupies at least 50%, in particular at least 75% of the roof surface of the motor vehicle.

According to one aspect of the present invention, on, and / or in the pane, a lighting arrangement is arranged which has an irregular pattern. In the present case, an irregular pattern is understood in particular to mean a pattern which is not purely functional and / or design-conditioned, for example for targeted local illumination of predetermined functional illumination areas, such as reading light. In one embodiment, the pattern is stationary or stationary, in another, its position and / or orientation relative to the motor vehicle is variable or changeable. In particular, an irregular pattern may have one or more characters, numbers, logos, pictograms, and / or other symbols.

The irregular pattern can in particular be individualized for the respective motor vehicle or be. As a result, in one embodiment, the identification of the own vehicle can be facilitated and / or this can be adapted individually to the needs of the respective user. In particular, an individualized irregular pattern can be given in one embodiment completely or at least partially manually or freehand.

Additionally or alternatively, the pattern may include an irregular array of luminous dots. In the present case, a luminous spot is understood to mean, in particular, a photographic image which appears at least 5 cm from the viewer at least at a distance and / or which has a diameter of at most 5 mm, in particular at most 2 mm. The luminous dot arrangement can in particular be stochastic or randomly distributed. In this way, in one embodiment, an advantageous illumination of the disc can be represented, in particular with the least possible stray light whose contour can be identified. In one embodiment, the illuminated dot arrangement can be starry-like or, at least approximately, correspond to a section of a nocturnal starry sky, preferably in number, arrangement and / or size of the luminous dots. As a result, an open roof can additionally be suggested in one embodiment and thus be made easier for claustrophobic vehicle occupants.

In one embodiment, the luminous means arrangement has one or more active illuminants, which - alone or in part - form the irregular pattern. In the present case, an active luminous means is understood in particular to be a luminous means which emits visible light of one or more wavelengths or colors, preferably with charging or supply of electric current. In one development, an active light source is an LED, mini-LED or the like.

In addition or as an alternative, the luminous means arrangement can have one or more passive luminous means which-alone or in part-form the irregular pattern. In the present case, a passive illuminant is understood in particular to be a luminous means which reflects radiated light, preferably directed or non-directional. In a A further development comprises a passive illuminant, in particular at least substantially punctiform, reflective substrate, which is arranged in a further development in the interior of the disc, in particular in the disc is or is formed. Additionally or alternatively, a passive luminous means may comprise an empty, or at least substantially punctiform, empty or filled with a fluid, in particular a gas and / or a liquid cavity, which is arranged in a development in the interior of the disc, in particular in the disc is formed or . becomes. Due to the different refractive indices of disc material and cavity (filling) light is reflected in the interior of the disc at the interface of the cavity, preferably at least half.

In one embodiment, the roof window element has a one-part or multi-part illumination means for irradiating passive illuminants of the illuminant arrangement. The illumination means may be (de) activatable. In a development, the light emitted by it, in particular its color or wavelength (s) and / or strength, adjustable, preferably by regulating an energy, in particular power supply of the lighting means.

In a development, the illumination means for irradiating passive bulbs is set up by the disc. In particular for this purpose, the illumination means can couple light into the interior of the pane, in particular into an end face or a cross section of the pane.

The illumination means may be arranged in one embodiment on one or more end faces of the disc, in particular on one or both lateral end faces and / or on the vehicle front longitudinal direction and / or rear end side. Additionally or alternatively, the illumination means may be arranged completely or partially in a recess of the disc. In one embodiment, the lighting means is detachably connectable or connected to the pane. As a result, in one embodiment, the lighting means in a simple manner (de) mounted, in particular exchanged and / or maintained. In another embodiment, the illumination means is permanently, in particular materially bonded, connected to the disc. In this way, the attachment and / or light coupling of the lighting means can be improved.

In one embodiment, the lighting arrangement has one or more, in particular one or more active and / or one or more passive lighting means for emitting light into a vehicle interior and / or the environment. By illuminants that are adapted to emit light into a vehicle interior, in particular, as explained above, an advantageous illumination of the interior facing the vehicle interior pane can be displayed, in particular adapted individually to the needs of the user, with minimal disturbance light whose contour indicated and / or an open roof can be suggested.

By illuminants which are adapted to emit light in a vehicle environment, in particular, as explained above, an advantageous exterior lighting of the vehicle can be represented, in particular facilitates the identification of the own vehicle and / or their contour can be identified with the least possible disturbance light.

One or more, preferably all lamps of the lamp arrangement can be arranged in an embodiment in the pane or between a vehicle interior facing the disk inside and an opposite, the vehicle environment facing the outside of the window or be. As a result, in one embodiment, these bulbs can be accommodated compactly and / or protected against environmental influences. Arranged in the disk bulbs and / or lighting means can be formed in the original forms of the disc in this, in particular cast or be. Likewise, they can also be arranged between two layers of a multilayer pane and, in a further development, be joined to one or both layers, in particular by material bonding. In one embodiment, a plurality of active illuminants, in particular active illuminants arranged in the pane, are connected to one another and / or to a power supply by lines, which are preferably at least substantially invisible from a distance of at least 5 cm. Additionally or alternatively, active and / or passive bulbs can be arranged on a foil which, in a further development, is arranged on a disc inside and / or outside and / or between at least two layers of a multilayer disc, in particular connected to it materially. Likewise, illuminants can also be arranged in the disk and / or on a disk inside and / or outside and / or between at least two layers of a multi-layer disk, in particular in a materially connected manner to it.

In one embodiment, at least one unipartite or multi-part free surface area of a surface of the pane, in particular a pane inside facing the vehicle interior, an opposite, the vehicle environment facing the outside of the pane or a surface of a layer of a multi-layered disc, designed such that visible light of one or more wavelengths at this free surface area injected by an illuminating means into the pane, in particular at least predominantly or at least 50%, preferably at least 85%, into the surface Interior of the disc is reflected back, wherein the coupled by the illumination means in the interior of the disc light through one or more arranged on or on the surface of the disc bulbs of the lamp assembly, in particular at least predominantly or at least 50%, preferably at least 85%, can escape from the interior of the disc.

In the present case, a free surface area is understood to mean, in particular, an area of a surface of the pane on which no illuminant is arranged, which is therefore luminous means. Accordingly, in one embodiment, the disk has a surface, in particular a disk inside, a disk outside or a surface of a layer of a multi-layered disc, on or locally arranged on the one or more lamps in an irregular pattern, and in the Incidentally, or next to the light source (s) forms a (surface) free surface area, wherein the disc and the one or more bulbs are formed such that light, which is coupled by an illumination means in the disc, at the free surface area, at least in Substantially, is reflected back into the interior of the disc through which the bulbs on the other hand can escape from the interior of the disc.

Preferably, the preferably thin-layer, arranged on this surface, illuminant has a refractive index, which allows a corresponding light emission, while the disc has a refractive index, the total refelected light at the surface of the lens light inside the disc of the illumination means, at least substantially, in particular a Refractive index, which is smaller than the refractive index of the illuminant.

Accordingly, in one embodiment, a lighting means of a roof window member according to an aspect of the present invention may be configured or adapted to couple light in a certain angular range in the interior of the disc. In the present case, this is understood to mean, in particular, that light from the illumination means strikes a surface of the disc from the inside at a certain angle. The pane can then have a refractive index in which light is reflected in this angular range, in particular at least predominantly, while the illuminant can have a refractive index which diffracts light in this angular range from the interior of the pane or, in particular at least predominantly, exit leaves.

The pane of the roof window element, in particular a so-called panoramic window, of a motor vehicle, in particular passenger car, according to one aspect of the present invention may be connected to a front and / or rear window of the motor vehicle, in particular into this, or thereof, in particular by a Dachstruktur- or . Body member of the vehicle to be separated or spaced. In particular, a panorama window which merges into a front and / or rear window can advantageously be visually delimited by the irregular pattern.

Further advantageous developments of the present invention will become apparent from the dependent claims and the following description of preferred embodiments. This shows, partially schematized:

1 a roof window element of a passenger car according to an embodiment of the present invention in a cross section; and

2 a roof window element of a passenger car according to another embodiment of the present invention in 1 corresponding representation.

1 shows a roof window element of a passenger car, not otherwise shown, according to an embodiment of the present invention in a cross section.

The roof window element has a transparent Dachpanoramaspibeibe 1 on. In this disc 1 a lamp arrangement is arranged which has an irregular, star-like pattern.

For this purpose, the luminous means arrangement has a multiplicity of passive, punctiform luminous means 1.1 which are fixed in the irregular pattern and thus form this pattern. The bulbs 1.1 are or are formed in one embodiment as reflective substrates or cavities and formed in the original shapes of the disc in this.

The roof window element further has a lighting means 2 . 2 ' for irradiating these passive bulbs 1.1 on. The lighting means 2 . 2 ' has one or more incandescent lamps, LEDs or the like which are (de) activatable and whose light color and / or intensity can be adjustable (not shown).

The lighting means 2 . 2 ' is for irradiating the passive bulbs 1.1 through the glass 1 set up. For this purpose, a lighting means 2 ' in an embodiment on a front side (right in 1 ) of the disc and arranged by means of a diaphragm 2.2 be optically coupled. Additionally or alternatively, the illumination means 2 in a recess of the disc 1 arranged and through a cover 2.1 against the vehicle interior (below in 1 ) be optically shielded.

This allows the lighting means 2 . 2 ' Light in the interior of the disc 1 couple in, as in 1 indicated by light beam arrows. For compact presentation is a multi-part lighting means 2 . 2 ' shown, whose parts on the front side (see. 2 ' ) or in a recess (see. 2 ) of the disc 1 and thus on or in the disc 1 are arranged. In variations not shown, also one of these parts 2 . 2 ' the lighting means omitted, in particular the lighting means only in a recess of the disc 1 or only on one or more, in particular opposite end faces of the disc 1 be arranged.

In a modification, also not shown, one or more of the point-shaped bulbs 1.1 also be designed as an active light source, in particular mini-LEDs. Then, in a development, the illumination means for coupling light into the interior of the disc 1 also omitted.

These active and / or passive bulbs 1.1 are for radiating light into the vehicle interior (below in 1 ) and equally in the environment (above in 1 ) set up. This can at the same time an advantageous interior and exterior lighting of the disc 1 being represented.

2 shows in 1 corresponding representation of a roof window element of a passenger car, otherwise not shown, according to an embodiment of the present invention. Corresponding elements are denoted by identical reference numerals, so that only the differences are discussed below and, moreover, reference is made to the remainder of the description.

In the execution of 2 the irregular pattern is or is given by the user manually or freehand and so individualized for the respective motor vehicle.

For this purpose, a thin-layer light source 1.1 ' on the inner side facing the vehicle interior (bottom in 2 ) of the disc 1 cohesively arranged. This thin-layer illuminant 1.1 ' can be applied in one embodiment by the user directly, for example by means of a pen, brush, stamp or the like, on the disk inside. Similarly, the freehand specified bulbs 1.1 ' also applied to a thin film, in particular painted or printed, which in turn on or in the disc 1 is or is.

Through this light source 1.1 ' can from the lighting means 2 coupled light locally from the disk 1 escape.

For this purpose, the disk inside and outside (bottom, top in 2 ) formed by the illumination means 2 coupled light inside the disc 1 is totally reflected: as in 2 dash-dotted and hatched hint, radiates the means of illumination 2 Light in a predetermined angular range α ≥ α _min (relative to the solder to the disk inside and outside) in the interior of the disc 1 , The refractive index n _{1 of} the disc 1 is chosen so that light that falls in this angular range from the inside to the inside or outside of the disk, is predominantly reflected or that applies: sin (α _min ) = 1 / n. ₁

The arranged on the inside of the disk bulbs 1.1 ' On the other hand, it has a refractive index n _{1.1 '} , which results in an exit of at least 50% of the light incident here from the illumination means 2 allows. This is in 2 the course of a light beam distorts the illumination means 2 drawn, which occurs at this point from the inside to the inside of the disk and would be totally reflected inside, if no light source 1.1 ' would be present. Extracted, however, is the course of the same light beam from the illumination means 2 drawn, which occurs at this point from the inside at the angle α (relative to the solder to the disk inside) on the inside of the disk and there by the light source 1.1 ' at the angle β from the inside of the disk 1 in the vehicle interior exits (sin (α) / (sin (β) = n _{1.1 '} / n ₁ ) and there is perceived by the user as part of the pattern.

Accordingly, in the embodiment of 2 the lighting means 2 set up to light in a particular, in 2 hatched indicated angle range in the interior of the disc 1 couple. The disc 1 has a refractive index n ₁ , in which light in this angular range, at least predominantly, is reflected, while the illuminant has a refractive index n _{1.1 '} , which diffracts light in this angular range out of the interior of the disc or, at least predominantly, leak ,

Also in the embodiment of 2 is the disc 1 transparent and allows a, at least substantially, undisturbed view from the vehicle interior into the environment. This look will by the local on the bulbs 1.1 ' in the vehicle interior exiting light from the lighting means 2 superimposed on an irregular pattern, such as a signature, a logo or the like.

In the embodiment of 2 are only bulbs 1.1 ' arranged on the disk inside. In variations not shown may additionally or alternatively in the same way bulbs 1.1 ' be arranged on the outside of the disk or be.

Although exemplary embodiments have been explained in the foregoing description, it should be understood that a variety of modifications are possible. It should also be noted that the exemplary embodiments are merely examples that are not intended to limit the scope, applications and construction in any way. Rather, the expert is given by the preceding description, a guide for the implementation of at least one exemplary embodiment, with various changes, in particular with regard to the function and arrangement of the components described, can be made without departing from the scope, as it turns out according to the claims and these equivalent combinations of features.

LIST OF REFERENCE NUMBERS

1

disc

1.1; 1.1 '

Lamp

2; 2 '

lighting means

2.1

cover

2.2

cover

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010049355 A1 [0002]

Claims (14)

Roof window element for a motor vehicle, in particular a passenger car, with a pane ( 1 ) and a lighting arrangement ( 1.1 ; 1.1 ' ), which has an irregular pattern. Roof window element according to the preceding claim, wherein the pattern is an irregular arrangement of luminous dots ( 1.1 ) having. Roof window element according to one of the preceding claims, wherein the pattern is individualized and / or at least partially predetermined manually. Roof window element according to one of the preceding claims, wherein the luminous means arrangement active and / or passive lighting means ( 1.1 ; 1.1 ' ), which form the irregular pattern. Roof window element according to one of the preceding claims, with a lighting means ( 2 ; 2 ' ) for irradiating passive illuminants ( 1.1 ; 1.1 ' ) of the illuminant arrangement, in particular by the disc ( 1 ). Roof window element according to the preceding claim, wherein the lighting means ( 2 ; 2 ' ) at least partially in a recess of the disc ( 1 ) is arranged. Roof window element according to one of the preceding claims, wherein the luminous means arrangement comprises at least one light source ( 1.1 ) for emitting light into a vehicle interior and / or the environment. Roof window element according to one of the preceding claims, wherein the luminous means arrangement comprises at least one light source ( 1.1 ), which in the disc ( 1 ) is arranged. Roof window element according to one of the preceding claims, wherein the luminous means arrangement comprises at least one light source ( 1.1 ' ), which on a surface of the disc ( 1 ) is arranged, in particular cohesively connected thereto. Roof window element according to one of the preceding claims, wherein a free surface area of a surface of the disc ( 1 ) is designed such that by a lighting means ( 2 ) in an interior of the disc ( 1 ) is reflected light at this free surface area, in particular at least predominantly, wherein the illumination of the ( 2 ) in the interior of the disc ( 1 ) coupled light by at least one arranged on this surface lighting means ( 1.1 ' ) of the lamp arrangement, in particular at least predominantly, from the interior of the pane ( 1 ) can escape. Roof window element according to the preceding claim, wherein the lighting means ( 1.1 ' ) has a greater refractive index than the disc ( 1 ). Roof window element according to one of the preceding claims, wherein the illumination means ( 2 ) is adapted to light in an angular range in the interior of the disc ( 1 ), whereby the disc ( 1 ) has a refractive index at which light in this angular range, in particular at least predominantly, is reflected, and wherein the illuminant ( 1.1 ' ) has a refractive index, the light in this angular range from the interior of the disc ( 1 ) bends out. A method for producing a roof window element according to one of the preceding claims, wherein the lamp arrangement is at least partially predetermined manually and / or arranged in the manufacture of the disc in this, in particular molded. Motor vehicle, in particular passenger cars, with a roof window element according to one of the preceding claims.

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