DE102007030186A1 - Linear LED lamp - Google Patents

Abstract

Described is a lamp unit 10 with a reflector 12 and a light exit area 16. A linear light source unit 30 with at least one LED light source 24 is arranged in the exit region 16 at a distance from the reflector wall so that the entire luminous flux emitted in the direction of the reflector and from there to Light exit area is reflected. The exit region is closed by a transmitting connection 18, so that a closed reflector space is formed. The reflector 12, the termination 18 and the light source unit 30 are permanently connected to the lamp unit 10.

Description

The The invention relates to a lamp unit and a lighting system with a receptacle for the removable attachment of a lamp unit.

Under a lamp or lamp unit is understood to mean a product an electric light source with further electrical, optical and mechanical elements connected to an inseparable unit is. Such a lamp is always interchangeable only as a whole Recording on a lamp determines.

In the WO2005 / 085706 is an LED lamp described with a base for connection to a lamp and a curved rotationally symmetric reflector, in the focal point for generating a directed light distribution, an LED source is arranged. The reflector opening forms a light exit plane of the lamp. The LED light source is arranged in the light exit plane. The light exit plane is closed by a transparent termination. A cooling block is arranged on the side facing away from the reflector of the LED light source and extends in the main emission direction, so that it protrudes from the light exit plane.

In the FR 2 831 647 is described an automobile signal light. A reflector is formed by a housing having an inner reflective surface. The exit region of the reflector is closed by a transparent disc, wherein the disc and the housing are fastened by a clip connection. A mounting strip for LED modules is formed in the middle of the pane, which is plugged in and electrically contacted there. The LED modules are arranged in a row in the longitudinal direction of the signal light and aligned in the direction of the reflector.

It Object of the invention, a lamp unit and a lighting system suggest for this purpose, with a high light output and high light intensity can be achieved.

These The object is achieved by a lamp unit according to claim 1 and a lighting system therefor according to claim 25. Dependent Claims relate to advantageous embodiments the invention.

In the lamp unit according to the invention, a linear light source unit is provided which differs from punctiform light sources, such as. In the WO2005 / 085706 differs in that the light emission is distributed over a linear range. Such a linear light source unit with at least one LED light source can on the one hand be formed by a single LED element (eg LED chip) of linear shape, for example by an elongated OLED, but preferably a plurality of LED light sources are arranged in a row , In the following, when referring to a "longitudinal direction", this refers to the longitudinal direction of the linear light source unit.

The Light source unit is at a distance in front of the reflector wall of a Reflectors arranged so that they light, preferably the entire Lichstrom radiates in the direction of the reflector, from where the light is reflected to the light exit area. she is this in contrast to conventional arrangements of light sources and reflectors, such as are commercially available, for example, as halogen reflector lamps, arranged in the light exit area. The main beam direction of Light source unit is thus preferably opposite to the main radiation direction the lamp unit. The reflector wall is preferably closed, d. H. especially in the central region, to which the main radiation direction the LED light source unit is directed, without interruption. So can as comprehensive a reflection as possible and thus efficient Exploitation of the generated light can be achieved.

While such a relative arrangement of LED light source and reflector already out of the WO2005 / 085706 is known, results in the inventive solution, the advantage that a significantly higher lamp power used by the linear light source unit and thus a greater light output can be achieved. Namely, along the longitudinal direction, a large number of high-power LEDs can be arranged.

Corresponding is also the light intensity distribution of an inventive Lamp unit in contrast to known rotationally symmetrical lamps, preferably substantially 2-axis symmetrical (i.e., both to Longitudinal as well as to the transverse axis) and leaves use themselves for a variety of lighting purposes, eg flooding, grazing light lighting etc. in areas such as facades, Walls, floors etc.

The reflector is preferably cylindrical, ie formed with substantially the same cross section in the longitudinal direction. Most preferably, it has substantially the shape of a longitudinally halved hollow cylinder with a preferably symmetrical cross-sectional shape. The shape of the reflector surface is selected to achieve optical properties, for example as a parabola, ellipse, etc. In this case, the parabolic focal point or one of the ellipse focal points is preferably arranged at the location of the light source unit. The reflector wall is preferably curved, particularly preferably with constant curvature. You can alternatively but also, for example, prismatic forms and other Struk have doors.

Of the The exit area of the reflector is the area from which the light emerges the lamp unit emerges. Preferably, the area is substantially just, for example. As between parallel longitudinal edges level formed by the reflector. The exit area is preferred rectangular, more preferably oblong, d. H. its extension in the longitudinal direction is larger, preferably much larger (eg more than 2-fold, or even more than 5 times) as the extension in the transverse direction.

At the Exit area is provided a conclusion, so that a closed reflector space is formed. The conclusion is transparent to the passage of light and can, for example, transparent or be formed translucent. The conclusion of the reflector space is preferably complete so that the lamp as a whole dust-tight and particularly preferred even airtight finished is. When hermetically sealed, a gas filling, For example, even with positive or negative pressure in the interior of the reflector space be provided if necessary for the operation of the LED light source unit (eg for cooling, electrical insulation, etc.) is advantageous.

The Lamp is not dismountable as a lamp unit and has in the interior no parts to be changed. The reflector, the conclusion and the Light source unit are permanently connected to each other. The lamp unit is for interchangeable use in a lamp in which it is always used as a complete unit and replaced as needed.

to Lamp unit according to the invention are a number provided by developments of the invention. So can the LED light source unit a common carrier for a number of linear, d. H. in the longitudinal direction successively arranged LED light sources exhibit. Preferably, all LED light sources are on a common carrier arranged. The carrier preferably also includes electrical conductors for electrical Supply of light sources. More preferably, he can electrical components for electrical supply and control of the LED light sources exhibit. The carrier can be designed as a board, wherein it is preferable to choose a board material, the For efficient heat distribution a good thermal conductivity having.

According to one Further development of the invention is on the outside of the lamp unit an electrical connection for the electrical Provided supply of LED light sources. The connection is preferably solvable, d. H. when installing the lamp in a lighting unit the electrical connection can be easily made and installed Expansion can also be easily separated again. Preferably, the electrical Connection as plug connection, terminal connection or Screw connection provided. Particularly preferred is an arrangement the connection to an end face of the reflector, d. H. at one the ends of the lamp. In this case is preferred on the front side a passage for the electrical contacting of the Inner arranged LED light source unit provided.

As well it is also preferable in mechanical terms, a releasable provide mechanical connection for mounting in a luminaire. The mechanical connection and the electrical connection can be formed by a common element, as for example from Screw base of conventional light bulbs or plug-in base commercial halogen lamps is known. Preferably comprises the mechanical termination a projecting terminal tongue, the example. One for a screw, clamp or locking connection may have a suitable hole.

Especially preferred are electrical and mechanical connection to provided at least one end face of the reflector. Therefor can there a terminal plate with a mechanical connection and be provided an electrical connection. The end plate is preferably also insoluble with the rest of the lamp unit connected. It can be provided that at both ends of the Reflektors each have a mechanical connection, eg. In Form a connection tongue is provided, but only at one Side an electrical connection.

According to one Development of the invention are to influence the light distribution slats are provided in the longitudinal plane, which are transverse to the longitudinal direction the light source unit are arranged. With the help of slats is a control or determination of the light emission angle possible in the lamp longitudinal direction. The slats can as simple, flat lamellae or as more complex curved forms be educated.

On the one hand an arrangement of fins at the exit area is possible. The slats can parallel next to each other, for example. Within the unit, d. H. be arranged behind the conclusion. Likewise, they may be on the outside of the unit, d. H. be integrated before the conclusion. Alternatively it is also an integration of lamellar, opaque or reflective Separations in the conclusion possible.

Alternatively or additionally, it is also possible to arrange the lamellae on the light source unit. If the light source unit comprises a plurality of light sources, the lamellae can be arranged between them. In this way, an alignment of the radiation is already in place of the light generation possible. It is particularly preferred here that the lamellae arranged between the light sources are formed with a reflective surface. Thus, a determination of the light exit angle in the longitudinal planes can still be achieved with high efficiency and at the same time optimum utilization of the light generated by the light source unit.

Other Further developments of the invention relate to influencing the light distribution by an optical element at the exit area. So a flat, transmitting optical element with structured, d. H. Not complete flat surface for distraction be provided of the light reflecting from the reflector. hereby the light distribution in the transverse plane is additionally preferred influenced to the distribution achieved by the reflector contour. The optical element can in this case, for example, the emission angle of the light enlarge. Particularly preferably, the lamp termination forms directly the optical element, d. H. it is not a separate optical element provided, but the conclusion is made by the optical Element formed, or the transmitting termination has a desired optical function. It is possible, form the optical element as a linear profile, so that the Element, for example, a longitudinally constant cross-section having. For example. can achieve the element with a prismatic structure be provided a broadened radiation.

In In a further development of the invention, the reflector is shaped in such a way that that the light of the light source unit in a focal point is focused in the distance in front of the light exit area. Such bundling can be achieved by a reflector with elliptical contour be achieved, wherein the light source unit in the first focal point is arranged so that the light in the second focal point is focused in the distance in front of the light exit area. The light distribution achieved is for a variety of Uses are particularly interesting because in the second focal axis of the entire luminous flux of the lamp in a linear Area is bundled. For example, in this focal plane arranged a narrow slot, so the lamp emits essentially all the light through this narrow slot. hereby on the one hand is the lamp from the opposite side not to see what extremely interesting applications in the lighting allows. In technical terms this gives the advantage that in the focal plane the light of the lamp is provided, but due to the distance which generated by electrical power loss in the generation of light Heat does not take effect there.

Other Further developments of the invention relate to the cooling of Light source unit. Such cooling is for LED light sources needed to do this in a cheap way To be able to operate the work area. For this is a heat sink is preferably provided on the LED element. Such a heat sink consists, for example. From a good heat-conducting material, for example. Metal, preferably aluminum. The surface of the heat sink is preferred enlarged, for example by lamellae and / or structured Surface. The heat sink is expedient, as well as the LED light source unit, elongated shape. He is with the best possible heat transfer as close as possible directly to the LED light source elements or to attach to the carrier. It is particularly preferred that the Heat sink protrudes from the lamp unit to to allow effective release of heat into the environment. For this purpose, it may be provided that the heat sink projecting from the exit area, preferably in the direction of the light emission. Is the heat sink of this substantially same width as the support of the light source unit, this results in no additional shading. Of the Heat sink can be accessed from the outside, For example, be designed as a handle. Preferably, it has a Profile shape with the same cross section over the length on.

For the effective cooling can provide a cooling medium be. For this purpose, the heat sink a Have cavity for receiving the cooling medium. The cooling medium is preferably fluid, d. H. liquid or gaseous. The cavity inside the heat sink can be completed, with a heat transfer to the heat pipe principle by evaporation of the cooling medium hottest and rainfall at the coldest point is achieved. Alternatively, the cavity can also be flowed through be. For this purpose, the heat sink at least one of the end faces a connection for have the cooling medium. When installing in an appropriate Light can be the connection with a feeder coupled to the lamp, so that an effective cooling in particular by flow through the heat sink is made possible in the longitudinal direction.

The Attachment of the heat sink is preferably carried out in Exit area at its conclusion. Here can be provided be that the conclusion one in the longitudinal direction running gap leaves, in which the profile trained heat sink is arranged.

In the described arrangement of the light source unit at the exit region with the main radiation direction in the direction of the reflector, for example, in a parabolic or ellipsoidal reflector whose surface is substantially perpendicular to the main emission of the LED light source element in the central region, to a certain shade of light emission. This shading can be minimized with appropriate (namely relatively broad) radiation of the LED light source element and a suitable narrow shape thereof that it is acceptable for many applications. But to achieve better utilization of the light emitted directly in Hauptabstrahlrich direction light can be provided that the reflector surface in the light source unit directly opposite region has a shape with a middle elevation, so that of the light source unit incident light in a direction of the light source unit is reflected over. In the case of a reflector with a symmetrical cross section, this is, for example, the middle region in the plane of symmetry, to which the central optical axis of the light source unit points. Here, in the remaining area as described, for example. Parabolically shaped reflector having a different shape with a middle elevation, for example. An involute.

A described lamp unit is preferably of handy size, so that they easily manually in corresponding lighting units can be used. Further preferred are sizes, as usual for standard lamps Kind are common. Thus, for example, the exit area a Have length of 5-150 cm, preferably 10-60 cm. The exit area can also have a width of 2.5-20 cm, preferably about 5-10 cm.

In a luminaire system according to the invention according to claim 25, a lamp unit may be used as described above. A corresponding lamp comprises a housing and an electrical connection and a receptacle for the changeable attachment of the lamp unit. The recording allows a mechanical fixation and electrical contacting of the lamp unit. One corresponding mechanical connection is with a suitable one Connection of the lamp unit connected. Likewise, a corresponding electrical contact with the contact terminal of the lamp unit connected.

A corresponding lamp is in contrast to the pure lamp unit provided that the actually light-generating element - namely the lamp unit - it is interchangeable. Next, the Light additional components, such as electrical Supply and control devices, u. a. to connect to include a mains voltage. Next can at the light Switching elements, dimmers, etc. may be provided.

In a particular embodiment is an elliptical Reflector lamp used. Here, the lamp has a slot-shaped Lichtaustrittsbe rich, in the second focal axis of the Lamp is located. In this way, the housing of the lamp almost completely - except for the slit-shaped, preferably particularly narrow light exit area - closed be, wherein nevertheless the full luminous flux emitted to the outside can be.

following Be embodiments of the invention with reference to drawings described in more detail. In the drawings show:

1a . 1b perspective views of an embodiment of a lamp unit;

2 Side view, front view and top view of the lamp unit 1a . 1b ;

3 . 3a Cross-sectional views of the plane A of the lamp off 2 as an assembled unit and in an exploded view;

4 a longitudinal sectional view of the plane C of the lamp 2 ;

5 an exploded perspective view of the front side of the lamp unit 1a . 1b ;

6 in a perspective view of a first embodiment of a closure plate of the lamp unit 5 ;

7 a longitudinal sectional view of the B level 2 ;

8th a backside view of the lamp 1a . 1b ;

9a in a perspective view a second embodiment of a closure plate;

9b a cross-sectional view of the plane C from 2 with the end plate off 9a ;

10a in perspective view a third embodiment of a closure plate;

10b a longitudinal sectional view of the plane B from 2 with the end plate off 10a ;

11a in cross-sectional view (plane A), a first embodiment of a reflector shape as a parabolic reflector;

11b as a light distribution curve, an intensity distribution of the radiation of the lamp 11a ;

12a in cross-sectional view (plane A), a second embodiment of a reflector shape as an ellipse with the focal plane F1 and F2;

12b in perspective cross-sectional view of an arrangement of a lamp

12a in front of a slot-shaped light exit area;

13 in partial cross-sectional view (plane A) and longitudinal sectional view (plane C) an embodiment of a lamp with fins at the exit region;

14 in partial cross-sectional view (plane A) an embodiment of a lamp with fins on the light source unit;

15 . 16 in partial longitudinal sectional view (plane B) embodiments of lamellae between the LED light sources;

17a . 17b Cross-sectional view, top view of a termination plate and light distribution curve of a lamp with a first embodiment of a transmitting termination;

18a . 18b Cross-sectional view, top view of a termination plate and light distribution curve of a lamp with a second embodiment of a transmitting termination;

19a . 19b Cross-sectional view, top view of a closure plate and light distribution curve of a lamp with a third embodiment of a transmitting termination;

20a a cross-sectional view of a lamp with a formed in a partial region as involute reflector;

20b an enlarged view of the involute area 20a ;

21a a cross-sectional view of another embodiment of a lamp with a quarter-circle-shaped reflector;

21b a light distribution curve of the lamp 21a and

22 in a schematic longitudinal sectional view of a lamp with a lamp according to 1a . 1b ,

In 1a . 1b . 2 is a lamp in different views 10 shown. The lamp has a cylindrical reflector 12 made of glass, on both end sides by end plates 12 is completed. Alternatively, the reflector may also be made of other materials, for example plastic or metal. The reflector 12 has a symmetrical cross-section with the domed side facing the back of the lamp. The shape of the curvature, as explained below, for example, be parabolic or elliptical. The figures show the reflector shape in this regard only schematically. At the front of the reflector 12 is between its longitudinal edges a rectangular light exit area 16 formed by a transparent glass pane 18 is closed. Alternatively, the conclusion 18 be formed by another material, for example. Plastic, as long as it is light transmissive.

About the length of the lamp 10 runs at the bottom of a heat sink 20 , The heat sink 20 stands at the light exit area 16 in the light exit direction. It is designed as a profile body with several parallel slats made of good heat conducting material, aluminum in the example shown.

The lamp 10 is designed as a linear lamp with an elongated light exit area. In the example shown, the width of the light exit area is about 5 cm. The length is relatively short in the example shown for illustrative reasons. For such lamps lengths of 10, 30, 60 and 100 cm (light exit area) are sought.

In 3 - 5 are details from inside the lamp 10 to recognize. The reflector 12 has on the inner side a highly reflective reflector surface 13 on. In the light exit level 16 is in a slot 21 the lens 18 an LED light source unit 30 directly on the heat sink 20 appropriate. The light source unit 30 is as a circuit board 26 with high-power LEDs mounted on it 24 educated. On the circuit board 26 are tracks for the electrical connection of the LEDs 24 intended.

The electrical supply takes place from a front end of the lamp 10 ago. At one of the end plates 14 is a screw terminal block 27 provided, the electrical contacts with a passage (not shown) through the end plate 14 provided and so with the circuit board 26 connected is.

On the screw terminal block 27 can, as in 7 . 8th shown, connection cable 52 be connected for electrical contact. As in further 6 - 8th shown, the end plate 14 a connection tongue 34 for mechanical connection of the lamp 10 on. The connection tongue 34 is as from the front of the lamp 10 protruding flat metal tab formed with a fixing hole. As in 22 shown, the lamp can 10 in a light 100 be exchanged by an electrical control and operating device 102 with the connection block 27 is connected and the connection tabs 34 on both end faces with corresponding receptacles on a lamp housing 104 get connected, for example by a screw connection. That way is the lamp 10 at the light 100 mechanically attached and electrically contacted so that the control and operating device 102 , which is connected to a mains voltage supply, one for the operation of the lamp 10 suitable voltage is supplied and the lamp 10 can be controlled in this way.

In 9a . 9b is a second and in 10a . 10b a third embodiment of a closure plate shown. In the second embodiment according to 9a . 9b is the connection tongue 34 also formed horizontally in the longitudinal direction of the lamp, but at the back of the reflector. In the third embodiment, the terminal tongue 34 perpendicular, provided parallel to the end plate.

As in 11a . 11b (for symmetry reasons only for half of the reflector) shown, the LED emits 24 on the reflector 12 Light off. The entire luminous flux is from the reflector wall 13 reflected. At the reflector wall 13 the light is in the main direction of the lamp 10 reflected, ie in the opposite direction of the radiation of the LED 24 , The luminous flux, which is very close to the top of the reflector, is reflected on the LED 24 and her board 26 reflected back, so that it comes in this area to a certain shade. Due to the narrow shape of the board 26 However, the entire shading effect remains relatively low. Later will be part of 20a . 20b discussed a way how the shading is further reduced.

At the in 11a . 11b variant shown is the reflector wall 13 of parabolic shape. The LED 24 is arranged in the focal point, so that light emitted there is reflected substantially in parallel and through the lens 18 essentially passes through in parallel. The result is like in 11b shown in the A-plane a very narrow light distribution curve with maximum light intensity.

In the variant according to 12a is the shape of the reflector surface 13 an ellipse shape with two focal plane F1 and F2. In the upper focal plane F1 are the LED elements 24 arranged. The light emitted from there is in the distance in front of the light exit area 16 arranged second focal plane F2 bundled.

This can be like in 12b take advantage of the total luminous flux of the lamp 10 with elliptical reflector through a narrow slit-shaped opening 36 through. Such a slot-shaped opening 36 may, for example, be provided on a light, so that the light - except for the slot 36 - is almost completely closed.

In the embodiment of a lamp according to the partial view in 13 is provided for controlling or fixing the light emission angle in the lamp longitudinal direction (B-plane), that at the exit area 16 of the reflector 12 slats 40 are arranged. The slats 40 are formed in the example shown as a flat diaphragm, which is parallel to the emission direction of the reflector 12 are arranged. They have a certain height in the light emission direction, with which the beam angle is defined in the longitudinal direction.

In an alternative embodiment according to 14 - 16 are on the board 26 between the individual LED elements 24 slats 42 arranged. These lamellae serve to limit the width of the light distribution in the longitudinal direction. Depending on the height, the distribution can be set as narrow as desired. The slats 42 can be opaque. Particularly preferred is a reflective surface of the slats 42 , in particular in conjunction with a curved cross-sectional shape of the slats 42 as in 16 shown. Because the slats 42 between the LED elements 24 are arranged, despite the associated limitation of the width of the radiation, an almost complete utilization of the radiated light can be achieved.

The emission characteristic of a lamp as described above, can be - in addition to the described variation of the shape of the reflector 12 - Also by the arrangement of corresponding optical elements in the light exit plane 16 influence. Here, transmitting optical elements can be introduced in order to achieve a desired light distribution - bundling, widening, scattering, etc. The optical elements may be provided as a separate unit, but particularly preferred are in the lamp termination 18 even provided. So can the surface of the lens 18 according to a first embodiment ( 17a . 17b ) have a structure with round elevations. As the light distribution curve shows, this makes the broadcast wider than with the mere use of a parabolic reflector.

A further optical effect can be achieved by the use of a prism structure according to the second embodiment ( 18a . 18b ) be achieved. The prismatic structure of the lens 18 leads to a deflection of the vertically incident rays on both sides, so that the in 18b shown relatively wide light distribution curve arises.

Finally, as in the third embodiment ( 19a . 19b ), the lens 18 also scatter the light diffusely, so that a diffuse light distribution curve ( 19b ) ent stands.

In 20a . 20b is a possible measure described with which a shadowing of the reflector 12 reflected light on the board 26 can be reduced. The area of the reflector surface 13 , which is relevant for such a shadowed reflection, in the example shown is the middle region 15 , To avoid shading, therefore, is the reflector surface 13 , which in the remaining area as described above, for example. Parabolically shaped, procure differently at this point. As in the enlargement of 20b becomes clear, is an involute shape with a middle peak 19 educated. This will cause rays coming from the LED 24 go out, no longer as with a parabola-shape substantially perpendicular, that is radiated back without angle change, but they are from the side flanks of the elevation 19 reflected to the side and thus no longer hit the board 26 ,

While symmetrical reflector cross-sections have always been discussed in the foregoing description, the embodiment of FIG 21a . 21b an alternative in which the reflector 12 has only a cross-sectional area, which essentially corresponds to the halving of a symmetrical reflector shape (of course here, depending on the desired properties, for example. With parabolic or even freiflächigem course of the reflector surface 13 ). The side of the reflector space is closed by a flat mirror surface 46 completed. As 21b shows, the corresponding light intensity distribution is unbalanced. The entire luminous flux of the LED light source passes through an approximately half the size of the lamp termination as in the previously described embodiments.

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 2005/085706 [0003, 0007, 0009]
• FR 2831647 [0004]

Claims (27)

Lamp unit with - a reflector ( 12 ) with a reflector wall whose boundary forms an exit area ( 16 ), and a linear light source unit ( 30 ) with at least one LED light source ( 24 ) in the exit area ( 16 ) is arranged at a distance in front of the reflector wall so that it emits light in the direction of the reflector wall, - wherein the exit area ( 16 ) by a transmitting conclusion ( 18 ) is closed, so that a closed reflector space is formed, - wherein the reflector ( 12 ), the conclusion ( 18 ) and the light source unit ( 26 ) are inextricably linked. Unit according to claim 1, in which - the light source unit ( 30 ) a plurality of LED light sources ( 24 ), the LED light sources ( 24 ) are arranged one behind the other in the longitudinal direction. Unit according to Claim 2, in which - the LED light sources ( 24 ) on a common carrier ( 26 ) are arranged with conductors for electrical supply. Unit according to one of the preceding claims, in which - on the outside of the unit ( 10 ) a detachable electrical connection ( 27 ) for supplying electric power to the light source unit ( 30 ) is provided. A unit according to claim 4, wherein - of the electrical connection as plug connection, terminal connection or Screw connection is provided. Unit according to one of Claims 4, 5, in which - the electrical connection on one end face of the reflector ( 12 ) is provided. Unit according to one of the preceding claims, in which - a detachable mechanical connection ( 34 ) the unit ( 10 ) for attachment to a luminaire ( 100 ) is provided. Assembly according to claim 7, in which - the mechanical connection has a projecting end tongue ( 34 ). Unit according to one of the preceding claims, in which - at least one end face of the reflector ( 12 ) a closure plate ( 14 ) with a mechanical connection ( 34 ) and an electrical connection ( 26 ) is provided. Unit according to one of the preceding claims, in which - a number of transversal to the longitudinal direction of the light source unit ( 30 ) arranged lamellae ( 40 . 42 ) is provided. Unit according to Claim 10, in which - lamellas ( 40 ) at the exit area ( 16 ) are arranged. Unit according to Claim 9 or 10, in which - lamellas ( 42 ) at the light source unit ( 30 ) between the light sources ( 24 ) are arranged. Unit according to one of the preceding claims, in which - at the exit area ( 16 ) at least one flat, transparent optical element for the deflection of the reflector ( 12 ) reflected light is provided. Unit according to Claim 13, in which - the optical element ( 18 ) has a structured surface that deflects the light so that the angle of emission of the light is increased. A unit according to claim 13 or 14, wherein - the optical element has a constant longitudinal cross-section having. Unit according to one of the preceding claims, in which - the light of the light source unit ( 30 ) in a focal axis (F2) at a distance from the exit area (F2) 16 ) is bundled. Unit according to one of the preceding claims, in which - at the light source unit ( 30 ) a heat sink ( 20 ) is provided. Assembly according to claim 17, in which - the heat sink ( 20 ) from the exit area ( 16 ) protrudes. A unit according to claim 17 or 18, wherein - of the Heatsink at least one cavity to Including a cooling medium. Unit according to one of claims 17-19, in the - the heat sink at least a front side a connection for the cooling medium having. Unit according to one of Claims 17-20, in which - the conclusion ( 18 ) a longitudinally extending gap ( 21 ), in which the heat sink formed as a profile ( 20 ) is arranged. Unit according to one of the preceding An claims, in which - the reflector ( 12 ) in a subarea ( 15 ) a cross-sectional shape with a middle elevation ( 19 ), so that from the light source unit ( 30 ) incident light at the portion in a direction on the light source unit ( 30 ) is reflected by. Unit according to Claim 22, in which - the subarea ( 15 ) has an involute shape. Unit according to one of the preceding claims, in which - the exit area ( 16 ) has a length of 5-100 cm, preferably 10-60 cm and a width of 2.5-20 cm, preferably 5-10 cm. Lighting system with - a lamp ( 100 ) with a housing and an electrical connection, - and a receptacle in which a lamp unit ( 10 ) is interchangeable received according to one of the preceding claims, wherein the receptacle comprises a mechanical connection, which with a mechanical connection of the lamp unit ( 34 ), and an electrical contact which is connected to an electrical contact ( 26 ) of the lamp unit ( 10 ) connected is. System according to claim 25, in which - the luminaire ( 100 ) an electrical operating and / or control device ( 102 ) for supplying one for the operation of the LED light source unit ( 30 ) suitable voltage or a suitable current at the electrical contact ( 26 ) having. System according to claim 25 or 26, in which - the lamp ( 10 ) has a slot-shaped light exit area, - and the lamp ( 10 ) is formed so that the light of the light source unit ( 26 ) in a focal axis (F2) at a distance from the exit region ( 16 ) is focused, - wherein the focal axis (F2) at the slot-shaped light exit region of the lamp ( 100 ) is arranged.