DE102005035720A1 - Luminaire with an elongated light source and with a likewise elongated light guide - Google Patents

Abstract

The invention relates to a luminaire (1) with an elongated light source (2), with an likewise elongated light-guiding element (4) which extends parallel to the light source (2) and is made of translucent material DOLLAR A and preferably also with an elongated reflector and / or Light limiting means (3, 26) which ensure that the light emitted by the light source (2) is radiated into the light guide element (4). In order to improve the glare control of the lamp (1), light guiding means for glare control of the light are arranged at the light entrance and / or light exit of the light guide element (4).

Description

The The invention relates to a luminaire according to the preamble of the claim 1, 13, 16, 17, 19, 21, 22 or 24.

It is the purpose of a lamp, a room in its direction of radiation to irradiate. It can ever differently positioned according to the type of room or facility or different sized irradiation zones required be.

In this regard are Lights known, each having a z. B. elongated light source and an elongate reflector in a housing, wherein the reflector has a specially shaped reflector zone on one side, to reflect the light in a special way unilaterally and thereby redirect.

It is the rest known, a z. B. elongated emission through a disk close. It is the purpose of the disc to provide protection for the interior of the case and to ensure the light source e.g. from pollution and splash water.

A lamp of the type specified is in the DE 201 07 384 U1 This prior art luminaire has an elongated housing with a longitudinal slot which is formed by a superior cylindrical lens as a viewing window, wherein a rod-shaped light source is arranged in the housing, which is assigned a reflector on its side facing away from the viewing window. Although the upstream cylindrical lens leads to a slight glare, but this glare is insufficient.

It is known for glare of lights, the light source of the lamp To set in the emission direction raster elements that the lamp with respect to a shallow angle of view, as with a ceiling light at normal Viewing direction of a person results, glare. The raster elements can transverse to the longitudinal direction the lamp or in the longitudinal direction.

Of the Invention is the object of a luminaire of the beginning specified type to improve the glare, especially at warranty a space-saving or compact construction.

These The object is solved by the features of claim 1. advantageous Further developments of the invention are described in the appended subclaims.

at the luminaire according to the invention are at the light entrance and / or light exit of the light guide Arranged light deflecting means for fading the light. hereby becomes a small construction at least in the radiation direction of the luminaire achieved because the steering means are located on the light guide and therefore arranged at a small distance with respect to the light source are what allows a low and compact design.

There the light-guiding means at the light entrance and / or light exit of Light guide are arranged, the light guide can be a support function for the Fulfill light-guiding means, so that it requires no further support elements for the light-guiding means. It can be the support function particularly easy to meet when the light guide on the surface abut the light guide, thereby already a support function given is.

A especially small construction is achieved when the light guide means and / or the light source of a curvature reduction of at least one of partially rounded light-guiding element or in a flattening of the light-guiding element are arranged.

The Lichtlenkmittel can by a special surface structure at the light guide and / or a z. B. plate-shaped light guide element be educated. The surface structure can be through slots or protrusions be formed, preferably transversely to the longitudinal direction of the light guide are arranged to a longitudinal glare to obtain.

It is within the scope of the invention also possible, the light-guiding means preferably transverse to the longitudinal direction the light guiding element extending and a lateral distance from each other having bars with reflective sidewalls train.

at Luminaires basically exist the demand for a low construction, on the one hand the Light itself as low as possible to make appear in appearance and on the other the light also in rooms to be able to order who are small or a big one Free space should have.

Of the Invention is the further object of a luminaire of in the preamble of claim 13 specified way in such a way that one small or compact construction is achieved.

This object is solved by the features of claim 13. Advantageous developments The invention are described in the appended subclaims.

at the luminaire according to the invention according to claim 13, the light-guiding element at its the light source facing and / or averted side with a peripheral portion a curvature reduction or a flattening. This will be along the Radiation direction extending cross-sectional dimension of the light guide and thus the corresponding dimension of the lamp as a whole reduced, whereby the desired low height achieved becomes.

One Another advantage of this embodiment according to the invention is that in the Free space of curvature reduction or flattening elements of the luminaire, such as. B. the light source and / or glare can be arranged, reducing the construction the lamp can be further reduced. By the curvature reduction or Flattening can be Furthermore Material for save the light guide and reduce the weight of the light.

The Light guide according to the invention is a preferably straight elongated and rod-shaped element, its cross-sectional area at least two non-parallel or at least one curved side or pages is limited. The light-conducting element according to the invention preferably has a round, in particular circular cross section.

Of the The invention is based on the further object of a luminaire of in the preamble of claim 16, 17, 19, 21 or 22 indicated Ways to improve the light emission.

These The object is achieved by the features of claim 16, 17, 19, 21 or 22 solved. Advantageous developments of the invention are described in the appended subclaims.

at the luminaire according to the invention According to claim 16, the light source is in the circumferential direction of Lichtleitelements movable and in the respective movement position positionable. This can be the main emission direction of the luminaire in optional lateral directions Adjust and adjust so that specific area of the to be irradiated Room can be irradiated in a special way. When the light is on light condensing Has light guide, can be each a particular area of the room to be illuminated in particular Illuminate the way intensively. It is thus possible to set the lamp so that one optionally room zone can be particularly intensively illuminated.

The The aforementioned object is also achieved by the features of claim 17 solved. In this embodiment of the invention are the reflector and / or light limiting means in the circumferential direction of the light-guiding element movable and in the respective movement position positionable. In this embodiment of the invention, the light source remain in their position, but the reflector and / or Light limiting means in the circumferential direction movable and optionally are positionable, wherein the reflected Hauptabstrahlrichtung can be adjusted and adjusted in the circumferential direction.

The The aforementioned object is also achieved by the features of claim 19 solved. In this lamp according to the invention limit the reflector and / or light limiting means with each other opposite Longitudinal edges one Light restriction opening being the opposite ones Longitudinal edges of the Reflector and / or light limiting means arranged in the light limiting opening Encompass light guide, the width of the light-limiting opening adjustable and is adjustable. In this embodiment of the invention can be optionally broaden and reduce the area of the room to be illuminated. Consequently, this design is to the lamp to adjust so that certain Radiation ranges can be adjusted.

The The aforementioned object is also achieved by the features of claim 21 solved. In this lamp according to the invention is the distance between the light guide on the one hand and the Light source and / or the reflector and / or light limiting means on the other hand mutable. Such an optional change leads due the distance increase or reduction to a change in the Lighting zone in the room to be illuminated. Thus, also in this inventive design at least the size of the optionally lighting zone of the room adjustable.

The The aforementioned object is also achieved by the features of claim 22 solved. In this embodiment of the invention are the reflector and / or light limiting means facing the light source Side open. This embodiment of the invention is suitable for one direct and indirect lighting of a room, which by the Lichtleitelement radiated light for the direct illumination of the Room serves and that of the light source to the light guide light emitted from the opposite side or that of the reflector means to the side facing away from the light guide towards the indirect Lighting of the room is used.

For a lamp of the initially stated NEN type requires a holder for the light guide to hold it with respect to a housing and / or a reflector and / or a light limiting means in the desired position. It is known to form such retaining means by additional strips which are attached to the housing of the lamp and engage under the light guide laterally, see, for. B. 2 from DE 201 07 384 U1 ,

Of the The invention is based on the further object in a luminaire the type indicated in the preamble of claim 24, the holder for the light guide to improve. In this regard, is in particular a simple and inexpensive to produce and easy and easy to assemble mountable construction.

These The object is solved by the features of claim 24.

Of the Invention is in this regard the realization that when assembling the light of the present Type of assembly of the light guide is not limited thereto that it opposite to the direction of radiation is installed.

at the luminaire according to the invention according to claim 24 limit the housing means and / or reflector means and / or light-limiting means with opposing ones Longitudinal edges a light limiting opening, the longitudinal edges of the in the light-limiting opening arranged light guide element positively engage behind. At this inventive design is a form-fitting a Mount for the light guide in the construction of the housing means and / or the reflector means and / or the light limiting means integrated, wherein additional Retaining strips including theirs Fasteners omitted and therefore not manufactured, provided and must be mounted. In this embodiment of the invention are thus the holding means for the light guide by a particular shape of the housing means and / or Reflecting means and / or light limiting means formed and thus integrally connected with these. It can with respect to a vertical longitudinal central axis On both sides of the light guide arranged housing means and / or reflector means and / or light limiting means with respect to vertical longitudinal center plane also be formed in one piece or two parts.

The Assembly of the light guide can be z. B. by axial insertion between the longitudinal edges.

For a prescribed positive locking the light guide is particularly suitable such a shape of the light guide, wherein the light guide on both sides convex rounded side surfaces having. In such an embodiment, the longitudinal edges of the engage behind housing center and / or reflector means and / or light limiting means the equator of Light guide, in the area of the lateral curves present are. In a rear grip of these curves can be in a simple manner realize a clamp-holder in that the longitudinal edges of the light guide between to pinch. This clamping effect can be with a ceiling light z. B. realize by the weight of the light guide.

These inventive design also leads to a low and compact construction for the luminaire.

at the luminaire according to the invention Preferably, a light guide is provided which is the cross-sectional shape and size of a having compact rod, wherein it - seen in the longitudinal direction - for at least two-sided or three-sided radiation is suitable. In this case, the light guide Not only stable and self-supporting, but it is also a compact Cross-sectional shape of the luminaire allows but it is also suitable for influencing, in particular bundling of the radiated light. It is possible, the light guide so to design that its light emission over at least one peripheral portion its circumferential length uneven and it also designed specifically uneven can be.

It is particularly advantageous, the light guide at least in its emission area with a round, in particular circular lateral surface train. In this embodiment, the light guide is not only particularly compact, but it can also achieve a lens effect, the one targeted light density of the emitted light on one certain circumferential length section allows.

following Be advantageous embodiments of the invention with reference to embodiments and simplified drawings closer explained. It shows:

1 a luminaire according to the invention with an elongated light guide in cross-section and with an associated graph showing the luminous intensity distribution of the emitted light;

2 a corresponding lamp without the light guide and also with a graph that illustrates the light intensity distribution;

3 a lamp in cross section with an associated diagram in a modified embodiment;

4 a luminaire according to the invention with an associated diagram in a further modified embodiment;

5 a lamp according to the invention in a further modified embodiment in perspective view;

6 the luminaire according to 5 in vertical section;

7 a lamp according to the invention in a further modified embodiment in perspective view;

8th the luminaire according to 7 in vertical section;

9 a luminaire according to the invention in a further modified embodiment in vertical section;

10 the light after 9 in a different setting;

11 the light after 9 in a different setting;

12 a lamp according to the invention in a further modified embodiment in perspective view;

13 a lamp according to the invention in a further modified embodiment in perspective view;

14 a luminaire according to the invention in a further modified embodiment in vertical cross-section;

15 a lamp according to the invention in a further modified embodiment in perspective view;

16 a luminaire according to the invention in vertical cross-section in a further modified embodiment;

17 a light intensity distribution clarifying diagram of the luminaire according to 16 ,

at all embodiments are the same or similar parts provided with the same reference numerals.

From the in 1 in their entirety with 1 designated light, only the main parts are shown, namely a light source 2 , a the light source 2 surrounding reflector to one side 3 and a light guide 4 in the form of a light guide rod, on the open side of the reflector 3 is arranged and closes this. All three aforementioned components 2 to 4 are of elongated shape, with the light source being 2 z. B. to a tube, in particular a fluorescent tube, in the reflector 3 to a thin-walled profile, in particular U-shaped cross-section, and the light guide 4 is a rod member of compact cross-sectional shape whose cross-sectional area is bounded by at least two non-parallel sides or at least one curved side. The light guide 4 is made of transparent material, eg glass or plastic, especially PMMA, and is crystal clear.

In the embodiments, a cross-sectionally substantially round, in particular circular, and thus cylindrical light-guiding element is provided, preferably in the form of a solid rod. Due to the rod shape, the light guide bundles 4 the transversely irradiated light similar to a lens, being on both sides of a vertical longitudinal center plane 1a recessed light zone sections Za of the light zone Z, as it is below the 1 shown graph of the light intensity distribution shows. In contrast, such a lamp without the light guide has a symmetrical zone of the light intensity distribution as it 2 shows.

The reflector 3 has the cross-sectional shape of an upside-down U, eg in pentagonal shape. Its lower longitudinal side edges 3b limit a reflector opening 3a elongated and preferably rectangular shape. The width b of the opening 3a or the distance between the longitudinal side edges 3b one another is smaller than the associated cross-sectional dimension of the light-guiding element 4 , z. B. its diameter.

According to the embodiment 3 is the light source 2 possibly with the suggestively illustrated reflector 3 to at least one side, preferably to both sides, and thus in the circumferential direction of the light-guiding element 4 , movable or pivotable and can be positioned in the respective adjusted position. For this purpose, a suggestively illustrated leadership 5 serve in which the light source 2 and possibly also the reflector 3 be bordered with a non-dargstellten guide element or held it. Like the graph of 3 shows, can be displaced laterally by this adjustability at least on one side of the associated lateral recessed zone area Za. This light 1 is thus suitable to illuminate optional lateral areas of the room to be illuminated particularly strong.

According to the embodiment 4 can the width b of the reflector opening 3a or the distance between the longitudinal side edges 3b from each other and optionally enlarge or reduce. For this purpose, the longitudinal side walls 3c laterally adjustable, eg around their upper longitudinal edges 3d pivotable and positionable in the respective pivot position. In this embodiment, changes in a round light guide 4 depending on the existing distance b of the lower longitudinal edges 3b the side walls 3c also the distance between the light source 2 and the light guide 4 , The diagram shows a wide light zone Z with a wide reflector opening 3a as well as a medium and narrow light zone Z with a correspondingly narrow setting. The depth of the light zone Z decreases with increasing width of the reflector opening 3a from.

According to the embodiment 5 are the light source 2 , the reflector 3 and the light guide 4 a component group of a surface-mounted luminaire. Like it 6 shows, in addition, an elongated hood 8th be provided in the form of an upside-down U, the top of the reflector 3 and partly on the light guide 4 is plugged, with the side walls 8a the hood 8th the reflector 3 can protrude down and on the circumference of the light guide 4 can be present, for example in the area of the equator 9 of the light-guiding element 4 , Such a hood 8th forms in the lateral areas where they meet the longitudinal side edges 3b of the reflector 3 surmounted, a light limiting means. It can also be provided in the above-described embodiments.

In this embodiment, the components 2 . 3 or 8th in the circumferential direction of the light-guiding element 4 be movable and optionally positionable. It can also be the entire assembly 2 . 3 . 4 and possibly 8th around the longitudinal central axis 4a be pivotable and positionable. In this case, the light guide 4 between two end walls 1b possibly be pivotally mounted, that of a lamp base 1c or housing protrude.

According to the embodiment 7 and 8th are the light source 2 and / or the reflector 3 also either on the light guide 4 in the circumferential direction thereof movable back and forth about its longitudinal central axis 4a possibly with the light guide 4 swiveling back and forth and positionable in the respective pivot position. This light 1 is, for example, designed as a so-called recessed luminaire, extending from the area below the horizontal equator 9 or from the equator 9 on both sides two reflector or housing walls 11 , z. B. divergent down, extend sideways, z. B. into the region of the lower edge of a mounting hole 12 in a room ceiling 13 , These housing walls 11 are z. B. on the ceiling 13 attached. In the embodiment extending from the lower edges of the housing walls 11 Housing side walls 11a upwards, which may be parts of a housing and on the inner wall of the mounting hole 12 abut and thereby the recessed light 1 horizontally in the installation opening 12 can position.

If the upper edges 11b have a horizontal distance c from each other, which is smaller than the diameter d of the light guide 4 then these edges can 11b a warehouse 14 for the out of the light source 2 , the reflector 3 and the light guide 4 existing component group 2 . 3 . 4 form, wherein the light guide 4 from above in the sense of a jack in the an elongated and limited opening forming camp 14 can be used. This forms such a camp 14 at the same time a pivot bearing in which the assembly 2 . 3 . 4 either used in a particular rotational position or rotatable or pivotable back and forth. This embodiment is characterized by a particularly simple and inexpensive to produce construction. If between the second opening laterally delimiting longitudinal edges 11b the housing walls 11 and the longitudinal edges 3b of the reflector 3 a distance is available, this light can 1 as a surface-mounted luminaire also light to the light source 2 facing away and thus emit indirect light for indirect lighting.

One of the above-described embodiment according to 4 Similar embodiments show the embodiments according to 9 to 11 in which the side walls 3b of the reflector 3 also laterally adjustable back and forth, for example, are designed to be pivotable and each positionable. By swinging out and in can be the width b of the reflector opening 3a zoom in and out, with the distance between the light source 2 and the light guide 4 is reduced or increased or can remain constant.

In this embodiment, the side walls can 3b For example, let it move laterally outwards, that the reflector 3 and the light guide 4 pressed vertically together. This tension makes the side walls 3b displaced on the inclined lateral surface of the guide element to the outside. In this embodiment, it is advantageous, the side walls 3b by biasing it into its one narrow reflector opening 3a moved back limiting position. In this embodiment, it is thus possible by compressing the reflector 3 and the light guide 4 the side walls 3b spread and move back with a reduction in pressure due to the elastic restoring force.

10 shows the side walls 3b the light 1 in a middle position and 11 shows the side walls 3b in a maximum spread position. The chart of the 4 that also according to the embodiment 9 to 11 applies, the width of the associated light zones Z shows the recessed light zone areas Za, wherein the widest light zone Z by the setting in accordance with 11 is reached.

In the embodiments according to 1 . 4 and 9 to 11 can the light source 2 and the reflector 3 also in the circumferential direction of the light guide 4 be movably mounted, in particular around the longitudinal central axis 4a of the light-guiding element 4 be pivotally mounted to influence the lateral illumination of the room.

The embodiments according to 12 to 14 and possibly also the embodiment according to 15 have special light-guiding means at the light entrance and / or light exit of the light-guiding element 4 on, to that of the light guide 4 to de-radiate radiated light. These are preferably embodiments for longitudinal glare.

A glare reduction can be achieved by a special surface structure on the light guide 4 and / or on a light-guiding element 23 , z. Example, in the form of a layer or a disk or plate, wherein the surface structure, on the incident surface and / or on the emitting surface of the light guide 4 or light-guiding element 23 can be arranged or can. This surface structure may be formed, for example, by elevations in the form of cones (in particular all-round glare) or transverse ribs (in particular longitudinal glare). Such elevations or prisms are used in the light guide 4 redirect radiated or radiated light, z. B. diffuse, and de-fade.

12 and 13 show exemplary different surface structures 16 . 17 . 18 and 19 , in each case in longitudinal sections or over the entire length of the light-guiding element 4 can be arranged. It may be, for example, surface structures, as described in the earlier patent applications according to DE 199 23 225 A1 . DE 103 15 268 A1 or DE 10 2004 039 676.0, to which reference is made in the full scope of disclosure.

The surface structures may, for example, the associated peripheral shape of the light guide 4 following (s. 12 to 15 ) or in the area of a curvature reduction 21 (S. 14 ) or flattening 22 (S. 12 . 13 and 15 ) can be arranged. In this case, the width of the reflector 3 about the circumferential length of the curvature reduction 21 or flattening 22 correspond.

The 12 and 13 show in longitudinal sections of the light guide 4 various screening means, which are at the light entrance and / or light exit of the light-guiding element 4 or the light-guiding element 23 in each case in longitudinal sections or substantially over the entire length of the light-guiding element 4 can extend.

In 12 are additional light directing elements 23 made of translucent material, which is applied to the surface of the light guide 4 are attached and fixed, z. B. in the region of the flattening at the light entrance and / or at the light exit or on the curved bottom of the light guide 4 , like it 13 exemplifies. If at the light entrance a flattening 22 is present, the light guide elements 23 flat panes or plates and at the light exit correspondingly curved shells, each at the light guide 4 are attached, for example by gluing. When in 12 The upper left illustrated embodiment, the light-guiding element 23 at its the light guide 4 remote light entrance side triangular Einschlitzungen 23a on, with respect to the light guide 4 run transversely and one in the longitudinal direction of the light guide 4 directed distance from each other. The inclusions 23a are filled with an opaque mass or covered by a mask.

In the middle embodiment of the 12 is the Entblendungsstruktur at the the light guide 4 facing light exit side of the light-guiding element 23 arranged. It can be transverse ribs 23b act that pointed z. B. taper down and include an angle of about 120 °.

According to the embodiment 12 on the right are the light-guiding means or the light-guiding element 23 through cross bars 23c formed, the z. B. have a pointed downwardly extending triangular cross-section and the side surfaces are reflective. The cross bars can z. B. made of metal and arranged in a frame or between longitudinal frame members and held or positioned.

13 does not show the above-described light guide means on the light guide element 23 but integrated at the light guide 4 , You can z. In the form of the entrapments 23a , Ribs 23b or crossbars 23c at the light entrance side and / or light exit side of a thin plastic layer 23d be arranged made of translucent material, at the light entrance and / or light exit of the light guide 4 applied, z. B. on the flat surface of the flattening 22 or on the curved surface portion of the light guide 4 at the light exit. This applies to all variants of the upper surface structure 16 . 17 . 18 and 19 ,

Like it 15 By way of example, in all embodiments, the elongated light source 2 through light emitting diodes 24 be formed, which are arranged longitudinally in rows, for example on a carrier strip 25 that z. B. in a groove 25a can be arranged sunk.

Because light-emitting diodes 24 have a directed in the direction of emission and, for example, bundle-shaped radiation characteristic, when using light-emitting diodes 24 on a reflector 3 be waived.

It can also replace a reflector 3 a cover means or light limiting means 26 be provided, which preferably consists of opaque material, such as metal, in particular light metal, such as aluminum.

According to the embodiment 15 is the light 1 only from a reflector means 3 or light limiting means 26 , an elongated light source 2 , in particular light-emitting diodes 24 , and the light guide 4 , wherein additionally, for example in between, a surface structure 16 . 17 . 18 or 19 , z. B. in the above variants, eg. B. on a light guide 23 , may be present. The reflector means 3 or light limiting means 26 can, for example, U-shaped or C-shaped, the light guide 4 overlap and hold positively. In such a holder 27 can the light guide 4 be longitudinally displaceable.

According to 15 engages and engages behind the light limiting means 26 the equator 9 of the round light-guiding element 4 , causing the bracket 27 for example, can be formed.

The depth t of the flattening 22 is greater than the thickness e of the light-guiding element 23 , This creates a free space 22a for the light-emitting diodes 24 created.

The wall thickness of the light-limiting element 26 is, for example, in the area of its middle bar 26a where also the groove 25a can be, biggest, and she can to the edges of the thighs 26b decrease, eg continuously.

Also in the embodiment according to 15 may be a relative mobility in the circumferential direction between the light-limiting element 26 and the light source 2 on the one hand and the light guide 4 on the other hand be possible to z. B. to adjust the emission area laterally.

According to the embodiment 16 , in which the same or comparable parts are also provided with the same reference numerals, the lamp is 1 such with direct and indirect radiation for direct and indirect lighting of a room. In this lamp 1 are the light source 2 , the light guide 4 and a reflector 3 with two on both sides of the light guide 4 arranged reflector side walls 3c provided, which are elongated and z. B. are formed by profiles and an elongated lamp 1 form. The longitudinal direction extends transversely to the plane of the drawing. For the preferably tubular light source 2 are each provided at one or both ends of a holding means and / or electrical connection means, for. B. on end walls, not shown, which may be parts of a housing and / or parts of the reflector 3 may be, which is part of the housing or the housing forms, or may be parts of a light-limiting means, as z. In 15 is described in itself.

The side walls 3c of the reflector 3 limit with their longitudinal edges facing each other 3b an opening 3a in which the light guide 4 is arranged so that the longitudinal edges 3b the light guide 4 grip around the side, wherein they can rest laterally on the lateral surface. The position of the longitudinal edges 3b is in the embodiment after 16 in the middle region between the upper side and the lower side of the light-guiding element 4 arranged so that the longitudinal edges 3b in the area of the horizontal equator 9 are arranged. The longitudinal edges 3b can the equator 9 but also engage behind at a distance, creating a positive retention for the light guide 4 is formed.

In operation of the lamp 1 becomes light from the light guide 4 both as direct lighting down light and indirect lighting upwards for direct and indirect illumination. The proportion of direct and indirect amounts of light is determined by the position of the longitudinal edges 3b between the top and the bottom of the light guide 4 determined, wherein a separation of the direct and indirect light is brought about in that the longitudinal edges 3b on the lateral surface of the light-guiding element 4 issue.

The side walls 3c of the reflector 3 preferably have at their the light source 2 facing sides reflecting surfaces 3e which improve the performance of the indirect light emission. This is not absolutely necessary since the indirect light emission from the upper portion of the light guide 4 even without reflective surfaces 3e works. In the context of the invention, therefore, the side walls 3c be both with and without reflective surfaces parts of a housing, not shown, or light limiting means.

The side walls 3c are preferably be minus the light source 2 concave or hollow cylinder section curved. This will be in the case of the presence of reflective surfaces 3e the reflection is bundled and improved. But even in the case where the side walls 3c Forming housing walls, the curved formation is beneficial to the shape of the luminaire 1 to improve.

The diagram according to 17 illustrates the direct and indirect illumination by light zones Z, wherein the indirect illumination preferably has two lateral light zone section Za.

The inventive design of the light guide 4 as a rod, in particular solid rod, is advantageous for several reasons. Characteristic of a rod is a compact cross-sectional shape with only a small larger difference between its two cross-sectional dimensions. As a result, the light guide rod 4 of sufficient bending strength even at a greater length. Due to its relatively large thickness, it is also very effective as Lichtbündelndes light guide.

In the embodiments, the light guide is 4 each bounded on at least one side, in particular laterally, by one or two curved lateral surface sections or on at least one side, in particular on the upper side, by a less curved or flat lateral surface section.

In summary, the embodiments according to the invention have the following advantageous features:
The design of the light guide as a crystal clear solid rod allows a low, compact and stable construction both for the light guide 4 as well as for the lamp 1 Overall, wherein the solid rod, the light similar to a lens, in particular bundles, if it is at least substantially round in cross-section. To this advantage also contributes to the design of the light source 2 as a fluorescent lamp and in particular fluorescent tube or as light-emitting diodes 24 in a row arrangement. By the preferably arranged light-guiding means 23 can be easily glare the lamp 1 if desired. Another advantage of the lamp according to the invention 1 is that it can be made from a few parts. The pivotable embodiments according to the invention allow the emitted light zones to be adjusted and adjusted as desired.

The embodiments according to the invention are suitable both for a luminaire 1 for lighting a room par excellence as well as in particular for a luminaire, which is intended for lighting small rooms, furniture or showcases or mirror rooms in mirror cabinets or work spaces of kitchens. In addition, such a lamp is suitable 1 as floor, table and wall lamp.

Claims (26)

Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending light-bundling light guide ( 4 ) made of translucent material, and preferably also with elongate reflector and / or light-limiting means ( 3 . 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ) Is irradiated, characterized in that (at the light entrance and / or light exit the light guide 4 ) Are arranged to deflect the light Lichtlenkmittel. Luminaire according to claim 1, characterized in that the light-guiding element ( 4 ) is rounded arcuately in cross-section on at least a portion of its circumference, in particular circular arc rounded or circular. Luminaire according to claim 1 or 2, characterized in that the light-guiding element ( 4 ) at its the light source ( 2 ) facing or facing away from a peripheral portion with a curvature reduction ( 21 ) having. Luminaire according to claim 1 or 2, characterized in that the light-guiding element ( 4 ) at its the light source ( 2 ) facing side a flattening ( 22 ) having. Luminaire according to claims 3 to 5, characterized in that the light-guiding means by a surface structure at the light-guiding element ( 4 ) or on a light-guiding element ( 23 ) are formed, wherein the light-guiding element ( 23 ) to the light guide element ( 4 ) is set. Luminaire according to claim 5, characterized in that the shape of the light guide ( 4 ) facing side of the light-guiding element ( 23 ) the shape of the light-guiding element ( 23 ) supporting lateral surface portion of the light guide element ( 4 ) corresponds, for. B. the shape of the curvature or curvature reduction ( 21 ) or flattening of the light-guiding element ( 4 ) corresponds. Luminaire according to one of claims 3 to 6, characterized in that the light source ( 2 ) of curvature reduction ( 21 ) or flattening is arranged opposite, in particular in the free space of curvature reduction ( 21 ) or flattening ( 22 ) is arranged. Luminaire according to one of the preceding claims, characterized in that the light source ( 2 ) is formed by light emitting diodes, which in a longitudinal direction of the lamp ( 1 ) extending array are arranged. Luminaire according to one of claims 5 to 8, characterized in that the surface structure at the the light guide ( 4 ) facing or facing away from the light-guiding element ( 23 ) is arranged. Luminaire according to one of claims 5 to 9, characterized in that the surface structure through slots ( 23a ) or protrusions ( 23b . 23c ) is formed. Luminaire according to claim 10, characterized in that the slots ( 23a ) or protrusions ( 23b . 23c ) transversely to the longitudinal direction of the light guide element ( 4 ). Luminaire according to one of the preceding claims, characterized in that the light-guiding means are preferably arranged transversely to the longitudinal direction of the light-conducting element ( 4 ) and a lateral distance from each other having transverse ribs ( 23b ) or by cross bars ( 23c ) are formed with reflective side surfaces. Lamp ( 1 ) with an elongated light source ( 2 ), and with a likewise elongated and parallel to the light source ( 2 ) extending light bundling light guide ( 4 ) made of translucent material, wherein the light guide ( 4 ) one of the light source ( 2 ) facing and / or facing away from convex curved peripheral portion, and preferably also with elongated reflector and / or light-limiting means ( 3 . 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ) or luminaire ( 1 ) according to one of the preceding claims, characterized in that the light-guiding element ( 4 ) at its the light source ( 2 ) facing and / or facing away from a peripheral portion with a curvature reduction ( 21 ) or a flattening ( 22 ) having. Luminaire according to claim 13, characterized in that the light source ( 2 ) in the free space of curvature reduction ( 21 ) or flattening is arranged. Luminaire according to one of claims 6 to 13, characterized in that in the free space of curvature reduction ( 21 ) or flattening ( 22 ) Are arranged Lichtlenkmittel. Lamp ( 1 ) with an elongated light source ( 2 ), and with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, or luminaire according to one of the preceding claims, characterized in that the light source ( 2 ) in the circumferential direction of the light guide element ( 4 ) is movable and positionable in the respective movement position. Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, and also with elongate reflector and / or light-limiting means ( 3 . 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ), or luminaire according to one of the preceding claims, characterized in that the reflector and / or light-limiting means ( 3 . 26 ) in the circumferential direction of the light guide element ( 4 ) are movable and positionable in the respective movement position. Luminaire according to one of the preceding claims, characterized in that the reflector and / or light-limiting means and / or the light source ( 2 ) about the longitudinal axis ( 4a ) of the light guide element ( 4 ) is pivotally arranged or are. Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, and also with elongate reflector and / or light-limiting means ( 3 . 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ), or luminaire according to one of the preceding claims, characterized in that the reflector and / or light-limiting means ( 3 . 26 ) with opposite longitudinal edges ( 3b ) a light limiting opening ( 3a ) and that in the light-limiting opening ( 3a ) arranged light guide ( 4 ) and that the width (b) of the light-limiting opening ( 3a ) are adjustable. Luminaire according to claim 19, characterized in that the reflector and / or light-limiting means laterally pivotable or flexible Be have tenwände. Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, and also with elongate reflector and / or light-limiting means ( 3 . 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ), or luminaire according to one of the preceding claims, characterized in that the distance between the light guide element ( 4 ) on the one hand and the light source ( 2 ) and / or the reflector and / or light-limiting means ( 3 . 26 ) is variable on the other hand. Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, and also with elongated housing means and / or reflector means ( 3 ) and / or light-limiting means ( 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ), or luminaire according to one of the preceding claims, characterized in that the housing means and / or reflector means ( 3 ) and / or light limiting means ( 26 ) with opposite longitudinal edges ( 3b ) a light limiting opening ( 3a ) and that in the light-limiting opening ( 3a ) arranged light guide ( 4 ), wherein the housing means and / or reflector means ( 3 ) and / or light-limiting means for the light source ( 2 ) facing side are open. Luminaire according to one of the preceding claims, characterized in that the housing means and / or reflector means ( 3 ) and / or light limiting means ( 26 ) at its source of light ( 2 ) facing side concave, in particular are concavely curved. Lamp ( 1 ) with an elongated light source ( 2 ), with a likewise elongated and parallel to the light source ( 2 ) extending and preferably light-bundling light guide ( 4 ) made of translucent material, and also with elongate reflector means ( 3 ) and / or light-limiting means ( 26 ), which ensure that the light source ( 2 ) radiated light into the light guide ( 4 ), or luminaire according to one of the preceding claims, characterized in that the housing means ( 11 ) and / or reflector means ( 3 ) and / or light limiting means ( 26 ) with opposite longitudinal edges ( 3b ) a light limiting opening ( 3a ) and that in the light-limiting opening ( 3a ) arranged light guide ( 4 ) engage positively behind. Luminaire according to one of the preceding claims, characterized in that the light-guiding element ( 4 ) has convexly curved side surfaces and the housing means and / or reflector means ( 3 ) and / or light limiting means ( 26 ) the equator ( 9 ) engage behind the curvature of the side surfaces at a distance. Luminaire according to one of the preceding claims, characterized in that light-conducting element ( 4 ) made of glass or plastic, z. As PMMA exists.