DE202007003819U1 - Luminous plate-shaped furnishing element - Google Patents

Abstract

shining plate-shaped device element with LEDs at the side (18) Irradiated disc, characterized in that the LEDs (18) approximately centrally into one of a reflector (24) deposited Deflecting deflecting disk (16) which, in the viewing direction (14) on the element, distanced behind one in comparison to the deflection plate (16) thin lens (28) is arranged, which rear side, oriented towards the deflection plate (16), roughened.

Description

The The invention relates to an actively illuminating device element, in particular used as a door of a kitchen cabinet, according to the Generic term of the main claim.

An element of this kind is from the WO 02/052191 A1 as a double-pane window element in the design of a heat or soundproof window known. There, while maintaining the function of the double-pane window, a window element acting as a decorative luminous surface is to be created, the light color of which is given by the selection of light-emitting diodes (LEDs). For the LEDs radiate except in the disc space above all, in such a variety of previously known manner, in the visible side of the two glass panes laterally into it. The LEDs themselves are lined up in the window frame hidden. The front pane of glass serves as a plate-shaped light guide, as is customary in floodlight areas. For decoupling light on the viewer to the visible side pane surface is roughened mechanically or by printing or painting optically. When using a glass plate with inner light-scattering inclusions, however, the incident light is radiated from both main planes of the glass plate, that is, facing each other in opposite directions.

One However, such furnishing element has no appeal on the market can find. That may be because the dual function neither of the two requirements "window" and "light" satisfied. Because dominated by the view of the illuminated window for the viewer, what he passes through the window - well strangely recognizable in color; the light impression of the window itself is only limp, especially without room depth and without color saturation. Almost unsightly, this window, with switched off LED radiation, in ambient light, because then the visual disability of the inside or externally scattering front window glass pane not even as a frosted frosted glass in appearance, but only as a poorly transparent window, which disturbs dominantly.

In The daily practice of great disadvantage is at the element after the generic pre-publication too, that a touch with your hands on the roughened front surface of the front windowpane unpleasant as visually disturbing and hardly residue-free Removable grease and sweat marks. Front surfaces of doors to kitchen furniture the higher price category can be with it anyway do not assemble promising; quite apart from that, that such a double-pane light assembly much too heavy and too thick to be as a door leaf about a typical Kitchen wall unit to be accepted.

Not a door leaf or similar furniture element is in the in DE 20 2006 004 865 U1 As a lighting body designated advertising medium in front of the forehead of shelves. In a in the elevation C-shaped, mounted in front of a shelf housing a visible side, about to be inscribed glass front panel with two contrast thick plate-shaped light guides is deposited directly adjacent to each other. Their rearward does not extend to the lower edge of the housing, so that here a front-shaded light source can be operated for irradiation in the lower end edge. This is probably well, not disclosed in detail, scattered light area transferred to the front Lichtleitplatte and be radiated by the inscribed through the front windshield - which, however, can expect no Nutzlichtauskopplung useful intensity through this front glass.

On the other hand is, in recognition of the circumstances described above, present Invention based on the technical problem setting, in particular as light-emitting cabinet doors suitable elements generic To create a way that gives the viewer a color-saturated impression leave with spatial depth - Elements the even then in the ambient brightness are still handsome, when the light irradiation is switched off; and the color-coded Change of mood, as well as possibly even illuminating the Cabinet interior with opened door, open.

Those Task is according to the invention by the main claim specified essential characteristics. After that takes place the end edge side LED radiation no longer in a thin on the visible side and roughened on the visible side, but behind a lens in a comparatively thick, in itself transparent deflecting disc made of transparent and good light-conducting material, such as the lightweight acrylic glass, with embedded scattering particles. This deflector is back with a on Shiny, but preferably a commercial stucco-profiled or PVD-coated mirror surface for diffuse reflection, in particular metal Reflector occupied. On the emission side, the deflecting plate is under light Distance in viewing direction behind a thin, also transparent, only facing away from the Deflector to roughened, diffuser in one of both discs supported receiving flat surrounding housing.

Preferably, a lying behind the reflector, supporting bottom, possibly with sufficient stability, the reflector plate itself, forward bent to the front-side LEDs encompassing surrounding housing. At its attributable to the viewer circumferential end edge of the lens is attached, preferably, the LEDs on the visible side, by means of stored angle bars. The surface dimensions of the diffuser thus exceed those of the deflection disc in any case by the application of the LEDs along the end edges of the deflection plate.

control and operation of the LEDs are expediently carried out wirelessly remotely, via a connection and Circuit box rearward at the edge of the Umgehäuses mounted, about glued on. Where the with the LEDs populated wiring vehicle strips themselves not completely along the circumference of the surrounding housing extend around this, there is an electrical bridge by glued into the housing side walls laid multi-core flat cable.

The Irradiation of the switched LEDs results over the entire Surface of the element a uniform color impression in the radiation of this flat box-shaped luminaire, brilliantly metallic and with impressive depth of high color saturation. The color of the radiation is about the choice of LEDs fixed. Preferably, however, RGB LEDs are used to as known as such, by means of their electrical control not only optionally have these three primary colors, but also between any mixed colors - static selected or in sliding change - vary to be able to.

at turned off LEDs still gives the impression of a brilliant, over their entire surface evenly toned, opaque frosted glass, because that usually already diffuse incident ambient light when passing through the two Slices additionally scattered and then from the reflector, again scattered, thrown back; whereupon this already many times scattered reflected light again in the deflection pulley and then still once fanned out at the back of the lens before it opposes the direction of observation via a soft milky white radiant surface forward again exit.

In any case is a flachbauendes, impressive according to the invention Full-surface radiating plate-shaped furnishing element created as architectural as well as local can use decorative room element, as well as about as a furniture element in the form of a wall unit, a cabinet floor or, with glued to the back Hinges, as a door light.

additional Further developments and other alternatives to the invention Solution result from the subclaims and, also taking into account their advantages, from the following Description of a not quite to scale in the drawing enlarged and abstracted to the functional essence sketched preferred implementation example of the invention Solution. The sole figure of the drawing shows as designed according to the invention plate-shaped luminous furnishing element with broken off Representation in horizontal cross-section a to the side wall of the body a cabinet hinged, designed as an extremely flat light box, front side of the entire surface illuminated door leaf in his unfolded position.

One, also indicated in horizontal section, side wall 11 The body of a kitchen wall unit, for example, typically has the thickness of just under twenty millimeters. By means of vertically mounted inside the corpus one above the other mounted (not realistic in the drawing, but only symbolically sketched) turn-pivot fittings 12 is on the side wall 11 a, acting as a large-scale light due to full-surface light emission, door leaf 13 ansgelenkt. This is as shown right-angle opening position in a side wall 11 slightly offset parallel plane.

The door leaf 13 should not be thicker than the sidewall 13 but still a deep, metallically clear and over the entire visible surface uniformly bright color impression, the viewing direction 14 against, radiate.

This is done in a transparent but with internal scattering articles 15 equipped, relatively thick deflection pulley 16 approximately in the center and parallel to its main plane from its front edges 17 forth by means of LEDs 18 (colored light-emitting semiconductor diodes) light 19 irradiated therein, that in the scattering particles 15 varied fanned out. A certain proportion of it passes directly over a fanning thin disc 28 for diffuse radiation; the other part is previously still on a reflector 24 mirrored and then in the deflection pulley 16 fanned out again before he even under further fanning on the back surface 29 in the diffuser 28 through, through them and as a result very evenly diffuse colored light of the viewing direction 14 against the entire surface of the door leaf 13 exit.

With LEDs off 18 there is still the impressive impression of a brilliant, evenly tinted, opaque frosted glass over its entire surface, because the viewing direction 14 incident, often already diffuse ambient light when passing through the two panes 28 - 16 additionally scattered and then from the uneven reflector 24 fanned back further is thrown, whereupon this reflected light in addition to the renewed passage through the deflection 16 and then again behind the lens 28 is diffused before it is the viewing direction 14 towards the outside over a soft light surface.

This is the back 23 the deflection pulley 16 directly with the reflector 24 deposited. The can be designed as a high-gloss light metal mirror; but in the interest of increased brilliance of the full color distribution is his, against the deflection plate 16 fitting, mirror surface preferably with a stucco topography to the diffuse reflector 24 mechanically processed or coated. In the interest of overall stability of the door leaf 13 is the reflector 24 preferably over the entire surface directly against the back 23 the deflection pulley 16 glued.

The LEDs 18 are mounted centrally along one of the mounting and the electrical control serving wiring carrier strip 39 , commercially available. Such a carrier strip 39 but is regularly wider than the thickness of the deflection plate 16 , Thus it would not come to the desired approximately central radiation in the front edge 17 if this, how backward the deflector 16 itself, to ensure a reproducible placement on strike against the ground 26 a Umgehäuses 22 fitting would be installed. Therefore, for the implementation of the present invention, the LEDs 18 so eccentric with respect to its central longitudinal axis on a carrier strip 20 mounted so that the spaced apart adjacent LEDs 18 all just as midway between the front and the rear plane of the deflection 16 in front of the front edge 17 come to rest - by this so eccentric stocked carrier strip 20 as sketched with its then shorter limb longitudinal boundary in the inner corner 21 of the enclosure 22 against its bottom 26 inserted and there on the inner surface of the side wall 25 fixed, about glued. This ensures that, in the course of the assembly, then in turn between the LEDs 18 sunk into the ground 26 set deflecting disk 16 the LEDs 18 over the entire length of the front edge 17 irradiate well in the center plane and thus their volume uniform with the light only symbolically represented in the sketch 19 flood, without it actually for the formation of individual pronounced light rays in the deflection 16 would.

It can be the circumferentially rectangular consecutive four margins 17 the thick deflecting disc 16 all so with LEDs 18 be equipped; in any case, there are two opposite edges 17 thus oriented towards radiating rows of LEDs 18 occupied - preferably then, usually vertically oriented, two longer of the four side edges 17 of the door leaf 13 , With a narrow door leaf 13 On the other hand, it may well be sufficient in the context of the present invention, only one of the longitudinal edges 17 with LEDs 18 for irradiation in the deflection pulley 16 to equip and mirror their opposite longitudinal edge train or occupy.

If the reflector 24 mechanically stable enough, it can also directly as a housing 22 serve; then he is over the front edges 17 the deflection pulley 16 , if necessary together with the LEDs in front of it 18 , widened out and to, then the front edges 17 outstanding, housing side walls 25 folded.

Preferably, however, as outlined a separate, flat tub-shaped housing 22 provided on the ground 26 , after edge insertion of the LED strips 20 , the mirror surface opposite the back of the with the deflection plate 16 fitted reflector 24 fixed, preferably also flat adhered in the interest of stable but flat structure.

At a clear distance in front of the deflection pulley 16 closes with the outer surface of the enclosure side wall 25 the face 27 the to the deflection pulley 16 parallel held diffuser 28 flush off. This diffuser 28 is transparent in itself, but with an approximately by etching or printing optically roughened and thus as sketched incident light scattering rear surface 29 fitted. The view direction 14 ent against located outer, so user side light exit surface 30 of the door leaf 13 On the other hand, it is glass-smooth and therefore easy to clean over its entire surface, especially since it has no edge-side mud flaps in the form of the edges of surrounding frames.

For mounting the lens 28 on the side walls 25 of the enclosure 22 can the free front ends 31 the enclosure side walls 25 towards each other, ie inwards, be folded to support legs 32 for sufficiently wide peripheral adhesive surfaces to achieve. In the interest of simpler placement possibility and greater torsional stiffness of the housing 22 But it is preferred for a particular frame of cross-section L-shaped angle bars 33 - with the free front ends 31 the enclosure side walls 25 in alignment - into the enclosure 22 inserted, glued in place, for example, or mounted in a form-fitting manner as outlined. The one from the side wall 25 towards the inside of the enclosure 22 projecting support leg 32 is designed so wide that the LEDs 18 in orthogonal viewing direction 14 of it in the We are considerably laminated. At the same time, this provides the sufficiently wide circumferential surface for reliable, rear-side, strip-shaped gluing of the diffusing screen 28 on the support leg 32 , But it can also be the frame with its support legs first 32 behind the lens 28 be glued and this configuration then under their projecting faces 27 as a kind of cover, between the front ends 31 in the, previously with the LED carrier strip 20 and then the reflector-backed deflector 16 equipped, enclosure 22 be sunk.

The diffuser 28 is about 30% of the thickness of the contrast, thick, held parallel to her diverter pulley 16 comparatively thin. The thickness of the deflection pulley 16 in turn, the depth of its margin 17 , is on the order of one third of the total thickness of this luminous door leaf 13 and at the same time measures at least the emission-side cross-section of the LEDs 18 , preferably a multiple (about three times) of this cross section. In the interests of a uniformly brilliant, deep color impression over the entire front-side emission surface, the clear distance between deflecting and scattering disk should be kept 16 - 28 not too small, preferably at least the thickness of the deflection plate 16 and thus have an order of magnitude of 50% of the thickness of the overall structure. With this interpretation can be a large uniformly shining door 13 in the total thickness of at most the thickness of a conventional body side wall 11 create just under twenty millimeters.

So that with opening of the outside radiant door leaf 13 not that between the side walls 11 - 11 The interior of the cabinet then appears darker, which is also considered to be worthy of protection - behind the door leaf 13 an interior light 34 mounted, glued about, which then parallel to the door leaf floor 26 radiates into the cabinet body. This light 34 may be L-shaped; better but as outlined the shape of a U-shaped profile, whose transverse to the door leaf 13 oriented yoke 35 inside, between a mounting leg 36 and a visor leg 37 , with LEDs that are not necessarily color-changeable, but monochrome shining 38 is equipped. The can now in the usual way in the middle on a carrier strip 39 be mounted. They are powered by a standard door switch as soon as the door leaf 13 stands out from the edge of the furniture body, then at as sketched open position of the door leaf 13 in the opening direction of the U-profile, that is substantially parallel to the ground 26 of the door leaf 13 , towards the door hinges 12 to and past these in the interior of the carcass between its side walls 11 - 11 irradiate.

11

Furniture carcass-side wall

12

Door hinge fitting (between 11 and 13 )

13

Door leaf (front 11 ) as inventively designed furnishing article

14

Viewing direction (against 13 )

15

Scattering particles (in 16 )

16

thick deflection pulley (in 13 )

17

Forehead edge (from 16 )

18

LED (in the middle of 17 )

19

Light (from 18 above 17 to 16 in)

20

Off-center equipped carrier strip (for 18 - 18 - 18 )

21

Corner (from 22 , for recording 20 )

22

Enclosure (from 13 )

23

Back side (from 16 )

24

diffuse metallic reflector (behind 16 , on 26 )

25

Sidewall (as part of 22 , if necessary from 24 )

26

Ground (from 22 ; optionally as 24 )

27

End face (from 28 , on 31 )

28

thin diffuser (before 25 )

29

optically roughened back surface (from 28 , to 16 located)

30

glassy light exit surface (from 28 , to 14 located)

31

Forehead (from 25 )

32

Support leg (for 28 )

33

Angle bar (within 31 , With 32 )

34

Light (behind 13 / 26 , For 11 )

35

Yoke (from 34 )

36

Mounting leg (mounted behind 26 )

37

Aperture (on 35 , across from 36 )

38

LEDs (up 39 )

39

centered carrier strip (for 38 , between 36 and 37 )

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 02/052191 A1 [0002]
• - DE 202006004865 U1 [0005]

Claims (16)

Luminous plate-shaped device element with LEDs ( 18 ) irradiated disc, characterized in that the LEDs ( 18 ) approximately in the middle of one of a reflector ( 24 ) deposited deflecting disc ( 16 ), which, in the direction of observation ( 14 ) on the element, distanced behind one in comparison to the deflection plate ( 16 ) thin diffuser ( 28 ), which at the rear, to the deflection disc ( 16 ) oriented, roughened. Element according to the preceding claim, characterized in that against the back of the deflection plate ( 16 ) adjoining mirror surface of the reflector ( 24 ) is equipped with a diffusely reflecting topography or coating. Element according to one of the preceding claims, characterized in that a flat-trough-shaped surrounding housing ( 22 ) is provided, in which the deflection disc ( 16 ) is installed at the rear, while the diffuser ( 28 ) viewing side in front of the front of the housing ( 22 ) is located. Element according to one of the preceding claims, characterized in that the thickness of the rearward deflecting plate ( 16 ) in the order of 30%, the thickness of the visible lens ( 28 ) is only in the order of 10% of the total thickness of the element. Element according to one of the preceding claims, characterized in that the clear distance between the deflecting plate ( 16 ) and the diffuser ( 28 ) is on the order of 50% of the thickness of the element as a whole. Element according to one of the preceding claims, characterized in that the thickness of the lens ( 16 ) at least the diameter of one of the LEDs ( 18 ). Element according to one of the preceding claims, characterized in that the center in the front edge ( 17 ) of the deflection disk ( 16 ) incoming LEDs ( 18 ) off-center along a carrier strip ( 20 ) are arranged for their electrical control. Element according to the preceding claim, characterized in that the carrier strip ( 20 ) with a longitudinal edge in front of a housing bottom ( 26 ), against which also the deflection plate ( 16 ) with the reflector ( 24 ) is present. Element according to one of the preceding claims, characterized in that longitudinally surrounding housing side walls ( 25 ), which are not compatible with LED carrier strips ( 20 ) are fitted, multi-core flat cables are laid. Element according to one of the preceding claims, characterized in that the deflecting plate ( 16 ) on the ground ( 26 ) one of the LEDs ( 18 ) enclosing enclosure ( 22 ) whose side walls ( 25 ) at their free front ends ( 31 ) with mutually oriented, at the same time the LEDs ( 18 ) laminating support legs ( 32 ) for receiving the lens ( 28 ) are equipped. Element according to the preceding claim, characterized in that from the support legs ( 32 ) behind the diffuser ( 28 ) mounted frame, which, in the surrounding housing ( 22 ), on whose side walls ( 25 ) is attached. Element according to one of the preceding claims, characterized in that it is connected at the rear with a remotely controlled connection and circuit box for the operation of the LEDs ( 18 ) Is provided. Element according to one of the preceding claims, characterized in that it is fitted at the rear with door leaf hinges ( 12 ) Is provided. Element in particular according to the preceding claim, characterized in that it is connected at the rear with a lamp ( 34 ) Is provided. Element according to the preceding claim, characterized in that along one transverse to its bottom ( 26 ) yoke ( 35 ) an LED carrier strip ( 39 ) is arranged. Element according to the preceding claim, characterized in that the carrier strip ( 39 ) between a mounting leg ( 36 ) and a diaphragm leg ( 37 ) one towards door hinges ( 12 ) opening U-profile is arranged.