DE10161468B4 - Luminaire with several reflectors - Google Patents

Abstract

Luminaire (1; 36; 55) with several reflectors, with
a) at least one holder for fixing a light source (14),
b) at least one concave-arched main reflector (18), which is arranged approximately in the shape of a hood above the light source (14), for deflecting a portion of the light emerging from the light source (14) upwards for focusing the light in such a way that the light source (14) and / or the beam emanating from the main reflector (18) is limited by the edges (15) of the main reflector (18), and
c) at least one reed reflector (19; 49; 58) which is arranged in the region of the outer edge of the beam bundle delimited by the main reflector (18) and is adjusted and / or adjustable in such a way that the part of the beam bundle falling thereon is deflected upwards .
characterized in that
d) the secondary reflector (s) (19; 49; 58) is (are) set or adjustable in such a way that he (she) from his (her) proximal area (areas) to his (her) distal area (areas) is (are) inclined.

Description

• a) wenigstens einer Halterung zur Fixierung einer Lichtquelle,
• b) wenigstens einem etwa haubenförmig oberhalb der Lichtquelle angeordneten, konkav gewölbten Hauptreflektor zur Umlenkung eines aus der Lichtquelle nach oben austretenden Lichtanteils nach unten zwecks Bündelung des Lichts derart, dass das von der Lichtquelle und/oder dem Hauptreflektor ausgehende Strahlenbündel durch die Kanten des Hauptreflektors begrenzt wird, und
• c) wenigstens einem Nebenreflektor, der im Bereich des äußeren Randes des äußeren Randes des von dem Hauptreflektor begrenzten Strahlenbündels angeordnet und derart eingestellt und/oder einstellbar ist, dass der darauf fallende Teil des Strahlenbündels eine Umlenkung nach oben erfährt.

The invention is directed to a lamp with several reflectors

• a) at least one holder for fixing a light source,
• b) at least one concave-arched main reflector arranged approximately in the shape of a hood above the light source for deflecting a downward portion of the light emerging from the light source in order to bundle the light in such a way that the beam of rays emanating from the light source and / or the main reflector is limited by the edges of the main reflector will, and
• c) at least one secondary reflector which is arranged in the region of the outer edge of the outer edge of the beam bundle delimited by the main reflector and is set and / or adjustable in such a way that the part of the beam bundle falling thereon is deflected upwards.

Most lamps, in particular Light bulbs, Halogen or fluorescent tubes and energy-saving lamps have a rotationally symmetrical shape, whereby the light is emitted in almost all directions Exception by the holder or socket of the light source in question shadowed area. Such an almost omnidirectional However, light radiation is undesirable in many cases, since this is a ceiling is often illuminated too brightly and on the other hand the relevant one Area of a room, e.g. the area of a table, comparatively receives little light, that in unfavorable make is not even sufficient to read a book or the like. Out because of this, people started to to provide most light sources with a screen that one Part of the light emitted upwards is reflected downwards and the luminance there increases. Semi-permeable screens used here swallow, for example, from opaque glass or a fabric covering also a significant amount of light, which is then neither in the lower Area of a room still for indirect lighting via the Blanket available stands. On the other hand, if reflectors are used, they will shade them part of the radiation direction completely, and it results an extremely uneven light distribution, due to the strong differences in holiness or contrasts in sensitive Can cause eye pain.

The German publication DE 38 36 282 A1 relates to a luminaire with a lamp reflector unit, whose reflection radiation proportion is within a. predetermined Angular range to the main radiation direction, directed Light distribution has, and with an approximately vertically downward oriented Main radiation direction at a distance below the lamp-reflector unit arranged additional reflector. This has a recess for the passage at least a large part of the reflection radiation component of the lamp-reflector unit and at least one that extends outwards from this recess, reflective surface above, the against the outer edge falls off and in sectional planes that contain the main radiation direction, concavely curved is. The arrangement is such that the on the recess adjacent inner edge of the reflective surface below the outer lower Peripheral edge of the reflector of the lamp-reflector unit, so the outer edge area of the radiation beam emitted by the light source from the additional reflector is caught and deflected in approximately horizontal directions. by virtue of the geometry of this lamp can not Rays of light are reflected upwards at a steeper angle; this lamp therefore casts a broad shadow on the ceiling, so that on the one hand spreads a dark and extremely uncomfortable atmosphere and on the other hand the differences in brightness in a room extreme between the bright center of the room and the dark ceiling are strong, which can cause eye or headache to those present.

Another lamp arrangement is from the EP 0 378 918 A1 known. There, a hood-shaped, concavely curved primary reflector is arranged above a light source, which deflects the light emitted upwards by the light source downwards. A convexly curved secondary reflector is present in the center below the light source and also approximately in the middle of the primary reflector, the curvatures of the two reflectors being approximately concentric to one another. The effect of this arrangement is that the light emitted upwards or downwards by the light source is reflected until it leaves the zone between the reflectors with a more or less large, lateral radiation component, so that one stands directly under such a lamp Person is not blinded, even if they look straight up. Since the two reflectors are arranged centrally one below the other, only a very small proportion of the light can be reflected approximately vertically downward from the protruding area of the primary reflector, so that a shaded area results here, so that such a luminaire is neither used as a work nor Dining area light can be used. No radiation is possible vertically upwards. As a result, the ceiling of the room in question always remains in the dark, and there is a dark, oppressive or even scary mood even when using this lamp.

From these disadvantages of the stand described Technology results in the problem initiating the invention, a To create luminaire arrangement in which as little light as possible is lost goes, and on the one hand a preferred direction of radiation exists in particular downwards, but on the other hand also the area above the lamp may have a lower luminance is illuminated to avoid blatant differences in brightness and thereby creating a pleasant atmosphere produce.

This problem is solved with a generic lamp in that the secondary reflector (s) are set in such a way or it is adjustable that he (she) from his (her) proximal area (Areas) ascending towards its (their) distal area (areas) is (are) inclined.

According to the teaching of the invention, therefore, it is not the central region of the downward-pointing beam that is important for illuminating a workplace or the like that is used for illuminating the upper area of the room, in particular the ceiling, but rather the edge-side portion of this beam, which is usually only anyway strikes at the periphery of a room. This is almost the opposite effect as with the EP 0 378 918 A1 , where a maximum proportion of the total light is sent to this periphery of a room, but where it is completely useless in most activities. In contrast to this, the solution according to the invention optimally illuminates the work or other activity area and also the near area of the ceiling is lightened, so that an uncomfortable cave atmosphere does not arise, but rather the usual place of a person is sufficiently illuminated all around. By the secondary reflector (s) being set or adjustable in such a way that it can be inclined so as to rise from its proximal region (regions) to its distal region (regions) the entire edge region of the radiation beam, which is initially directed downward, is collected by a secondary reflector and deflected upward, without an undesirable radiation component escaping in the horizontal direction, where illumination is usually not necessary.

It has proven beneficial that the light source is rotationally symmetrical, for example in the form of a halogen rod. As stated above, such light sources are easy to manufacture and therefore in the Practice widespread. Your application in the context of the present The invention presents no problems since the one arranged above the light source Main reflector all rays of light emitted in this direction without any noticeable loss of light deflected downward in the preferred direction of radiation.

Provided the holder for the light source is arranged such that its axis of symmetry is approximately horizontal is aligned, there are constructive advantages in that the main reflector should be designed as a breakthrough-free zone can, because the lamp holders) are usually in the range of one or both ends or end faces of the rotationally symmetrical light source located (-en).

Preferably the main reflector approximately symmetrical to the vertical plane through the axis of symmetry arranged the light source. This results in a uniform light emission, which can still be improved, especially in the area one end face opposite the socket an additional, possibly inclined reflector surface is attached so that also in the longitudinal direction of the light source a relatively uniform luminance is achieved.

It is within the scope of the invention that the main reflector has an elongated central part with about has a constant cross section, the longitudinal axis parallel to the axis of symmetry the light source runs. So lets even light distribution with elongated light sources with little manufacturing effort connect, since the reflector in such a case from a flat blank in the domed Condition can be bent.

This idea of the invention can be to continue to that the elongated middle part of the main reflector is about an circular cylinder segments bulge has, preferably an approximately semi-cylindrical shape with a Width B and a radius of curvature R = 0.5 * B. With such an arrangement, one can be the main reflector forming sheet metal can be bent with the simplest means so that an inexpensive Production of the lamp according to the invention possible is.

By accommodating the main reflector in a luminaire housing, in particular in the emergency-shaped recesses formed on the end faces thereof, a comparatively thin, almost foil-shaped reflector material can be used, which, on the other hand, has a high reflectivity due to special material compositions and / or surface coatings, around the entire Maximize light output of the lamp according to the invention. Because although such a thin reflector plate does not have a high level of inherent rigidity, it is completely encompassed by the housing on two opposite sides and thereby stabilized. This function is taken over by the emergency-shaped recesses on both end faces of a hood-shaped luminaire housing that tightly encloses the main reflector, whereby by inserting the main reflector the assembly can take place in the emergency-shaped recesses that are open on the long sides of the luminaire housing. Due to a particular curvature of the main reflector / housing Due to this static friction, additional fixation of the main reflector, for example by means of adhesive or the like, is not necessary.

The invention further provides that the long edges the middle part of the main reflector are straight and parallel run to the axis of symmetry of the light source. This gives one if possible smooth course the light distribution especially in the important for the secondary reflectors Edge area of the light bundled by the main reflector, so that too that of the secondary reflectors for illuminating a ceiling or the like. The proportion of light used contributes to uniform ceiling lighting.

Another feature according to the invention exists in that the secondary reflector (s) are set in such a way or it is adjustable that his (her) distance from the light source from his (her) proximal to the center of the beam Area (s) to his (her) catching the edge of the beam (distal) area (areas) increases. In such a case everyone receives reflected beam causing an upward component the deflected part of the radiation beam is made possible, the ceiling of a room to illuminate.

The invention recommends that the (the) secondary reflectors) at one to the adjacent area of the Fixed edge of the main reflector approximately parallel axis, in particular pivotable on the lamp housing or chassis is (are) articulated. The secondary reflector forms one Kind of lamella, which should end largely freely on its two longitudinal edges, around the upward and downward radiation components to hinder. The secondary reflector receives its mechanical stability, for example an assembly axis, over which he has in the area of his end faces with the luminaire housing or chassis is connected. In addition to mechanical stabilization, a such axis at the same time setting an optimal angle of inclination of the secondary reflector in question, so as to achieve the achievable light effect opitmal to the spatial To be able to adapt the circumstances.

The (each) supporting reflector (s) or swivel axis (s) can end supported on at least one end plate of the lamp housing his. Such end plates are usually therefore provided so that there is no glare in the direction of the end faces can. They can be used to store or fix the secondary reflectors according to the invention Use swivel or mounting axes if they are over the longitudinal edges of the main reflector extended downwards and there with openings are provided, which of the relevant fastening or swivel axes or these fixing means can be reached.

Following the idea of the invention the mounting or swivel axis of the secondary reflector (s) in the area of its proximal edge (s). Since the proximal edge of a secondary reflector the smallest distance from the light source, this measure increases the design effort for the arrangement according to the invention reduced to a minimum and on the other hand improves the aesthetics of the arrangement.

Further advantages result from the fact that the (the) secondary reflectors) in a tubular, with a longitudinal slot provided mounting or swivel axis inserted and clamped is (are). This is a simple measure to a lamellar secondary reflector with a mounting or Connect swivel axis. The one in a slot of such Axis with one of its longitudinal edges inserted secondary reflector can thereby within this axis be fixed in that projecting axially A female thread is cut into areas of the fastening or swivel axis and into this then a screw, preferably a grub screw, is screwed in, then with its front face against the face in question of the reflector part protruding into the slot. Two Such (maggot) screws are therefore able to fix the reflector to clamp in the relevant position.

According to the fastening or swiveling or articulation axis of the secondary reflector (s) approximately vertically below the relevant longitudinal edge the main reflector arranged, but preferably slightly Offset luminaire center. This results in a space-saving on the one hand Arrangement, on the other hand the (vertical) distance d of the relevant Axis to the one above longitudinal edge of the main reflector can be varied to achieve an optimal radiation angle of the main light beam emerging downwards, since the Distance between the inner longitudinal edges of two to each other parallel secondary reflectors limit the downward emerging beam.

A preferred design specification is that the main reflector has a width B measured perpendicular to the longitudinal axis of the light source, and that the attachment or pivoting or articulation axis of the secondary reflector (s) is at a (vertical) distance d from the relevant longitudinal edge of the main reflector, where: 0.25 * B ≤ d ≤ B ,

This area comprises the spectrum of the opening angles of the main light beam emitted directly downwards which is relevant for practice, it being assumed that with a longitudinal axis of the light source with a slightly offset upwards relative to the longitudinal axis of the main reflector extended glass bulb almost over the entire width B of the main reflector, rays are emitted through its opening on the underside, which - with the exception of the edge regions on the longitudinal edges of the main reflector - run in all directions with the vertical component pointing downwards or disappearing. The flattest possible beam therefore runs straight from a longitudinal edge of the main reflector past the proximal edge of the opposite secondary reflector. The above condition therefore results from trigonometric considerations for an opening angle? of the main light beam emerging downwards between 90 ° and approximately 140 °. A minimum divergence angle α of approximately 90 ° ensures that a work surface or the like is sufficiently illuminated, while a maximum opening angle? of no more than about 140 ° ensures that people standing to the side of the lamp with a horizontal line of sight are just not being dazzled.

Further advantageous properties result from the fact that for the distance b between the proximal and distal edge of the secondary reflector in question and the (vertical) distance d of the attachment or pivoting or articulation axis of the secondary reflector (s) to the relevant longitudinal edge of the The main reflector applies: d ≤ b ≤ 6 * d , preferably 1.4 * d ≤ b ≤ 5 * d , in particular 1.8 * d ≤ b ≤ 4 * d ,

The minimum dimensions for the width b of a secondary reflector result from the requirement that a beam leaving the opening of the main reflector approximately horizontally should still be detected and deflected upwards, so that the width b of the lamellar secondary reflector is at least the relevant slot width d between the main reflectors. The lower edge and the proximal secondary reflector edge must correspond. On the other hand, since the rays incident on this lamella are to be deflected at least upwards, ie at least by approximately 90 °, the secondary reflector in question should allow an angle of inclination of approximately 45 °, so that its width b is approximately by the factor √ 2 ≈ 1.4 should be larger than the slot width d mentioned above. The maximum values for the width b of a secondary reflector could be derived in the event of a curvature thereof, as will be discussed below.

The secondary reflector (s) should has an elongated shape with an approximately constant cross section (-Ies). This makes it particularly easy to manufacture by bending, Roll forms or the like possible, on the other hand, there is a uniform course of the light intensity over the whole length the lamp of the invention.

If the longitudinal axis of the secondary reflector (s) (-en) parallel to the relevant longitudinal edge of the central part of the Main reflector runs (run), there is a constant slot width d, which is a uniform ceiling lighting entails.

The properties of the lamp according to the invention can be further optimized by facing the light source area of the secondary reflector (s) is convex, preferably approximately along of a circular cylinder segment with (approximately) constant radius of curvature r. Due to the convex curvature becomes the reflected radiation component compared to the incident radiation component stronger fanned and thereby able to cover the entire ceiling area of a room illuminate. Although the cross-section of the bulge of a secondary reflector can also follow another curve, which at most a change distribution of the light projected onto the ceiling that can be reached with a circular-cylindrical curved secondary reflector Hard to beat results and a constant radius of curvature r offers manufacturing advantages.

It has been proven that the (mean) radius of curvature r of the secondary reflector (s) is greater than the (mean) radius of curvature R of the main reflector. The width of the main reflector B should be as small as possible so that the light reflected by the secondary reflectors is as possible free of obstacles past the main reflector to a ceiling can reach. On the other hand, through the light exit surface of the Main reflector with a width B in its vicinity already shows a strong inhomogeneity of the light radiation present, so that a comparatively low convexity of a Secondary reflector is sufficient to cover the entire area To illuminate the ceiling.

A design specification serves to improve the light distribution, according to which the (mean) radius of curvature r of the secondary reflector (s) and the (vertical) distance d between the fastening or swiveling or articulation axis of the secondary reflector (s) and the relevant one Long edge of the main reflector applies: 3 * d ≤ r ≤ 8 * d , preferably: 3.5 * d ≤ r ≤ 7 * d in particular: 4 * d ≤ r ≤ 6 * d ,

This condition arises under of nutrition, that the gap width d between the main and secondary reflectors is approximately half Width B of the main reflector corresponds, from the further requirement that at least that part of the light source that comes directly from the light source Reflector gap d penetrating light after its reflection and the secondary reflector if possible size Vertical component should receive. Because for this purpose, the angle of inclination of the secondary reflector at its proximal end in the order of magnitude of about 45 °, and on the other hand he should on his by the parallel to each other longitudinal edges area passing through the main reflector Tilt angle of at most about 20 ° compared to the Have horizontal, so the upward light component one if possible wide opening angle Has. Under these assumptions, trigonometric calculations provide the above limits for the permissible radii of curvature of a secondary reflector.

To the one not diverted upwards Part of the bundled Further narrow the light beam, preferably concentrically the mounting or swivel axis of a secondary reflector (each) Auxiliary reflector be articulated. Such auxiliary reflectors can be preferred in reading lamps, in particular floor lamps, use the opening angle here to further narrow down the radiation component emitted directly downwards, to thereby for a glare-free and therefore pleasant illumination of the reading or activity area to care. This allows the opening angle of the radiation component emitted upwards and downwards independently of one another affected become.

After all, it is the teaching the invention that two lighting units in succession in one flight are arranged, being in the area between the two lamp units the common power supply is arranged. This leaves the power supply bundle at a central point and from there, especially in the lamp mounting device embarrassed while on the other hand, the area of the main, secondary and possibly auxiliary reflectors in the area outside the attachment and power supply is shifted, so that this does not interfere in particular with the permissible swivel ranges are to be feared. About that in addition results from diametrically opposite one another Light sources provide optimal all-round illumination, even when used in Frame of a floor lamp through its pillar no discernible shadow arises.

Other features, details, advantages and Effects based on the invention result from the following Description of preferred embodiments the invention and the drawing. Here shows:

1 a perspective view of a ceiling lamp according to the invention;

2 a side view of the 1 m partially canceled;

3a . 3b cuts through each 2 along the line III - III at different positions of the secondary reflectors;

4 a cross section through a secondary reflector of the lamp according to the 1 to 3 ;

5 a side view of an extension wall lamp according to the invention;

6 an enlarged view of the detail VI 5 ;

7 a den 2 and 6 corresponding representation of a floor lamp according to the invention;

8th a view from the front of the lamp 7 in the direction of arrow VIII; such as

9 the detail IX 8th in an enlarged view.

For attachment to a ceiling, the in 1 illustrated lamp 1 a sleeve located above its center of gravity 2 with a vertical longitudinal axis, which is pushed over a ceiling mounting tube and then with a clamping screw 3 can be locked. The lower end of the sleeve 2 is on the top of a horizontally running pipe that is pierced at this point 4 welded or soldered on, which has a diameter of approximately 3.5 cm, a wall thickness of, for example, 1.5 mm and a length of, for example, 6.5 cm. This pipe 4 receives the rear ends of the lamp sockets with the wire connection terminals there and, if necessary, accommodates additional luster terminals for connecting the power connection lines and for connecting them through the sleeve 2 guided power supply cables. To fix these lamp holders in the area of the two end faces of the tube 4 Metal rings inserted and welded, soldered or glued. On the outside, an outwardly extending ring flange of the lamp holder in question can be applied and fixed, for example, by means of two screws arranged diametrically to the lamp holder in question. The lamp sockets can be bayonet sockets, the power supply being carried out by means of spring-loaded contacts in the interior of the socket, which are pressed against corresponding contact surfaces on the lamp connection. The light sources themselves are preferably high-voltage halogen lamps, since they have a maximum luminous efficacy and can also be operated directly from the mains voltage.

For fixing the two main reflector assemblies 5 on the front of the bracket tube 4 Additional rings, preferably made of metal, can be placed on the axial outside of the annular lamp holder flanges and together with the lamp holder on the end face of the holder approximately tube 4 be screwed tight. The housing of the main reflector assemblies 5 each comprises a circular cylinder jacket halved along its longitudinal center plane 6 as well as two end plates 7 . 8th , Both end plates 7 . 8th have a semi-circular top edge 9 that on the semi-cylindrical shell part 6 in the area of one of its curved edges 10 . 11 is fixed on the inside, in particular welded or soldered.

How 3 shows is the glass bulb 13 a preferably elongated light source 14 held by the lamp holder (not shown) with horizontal alignment of the lamp longitudinal axis and in such a way that the glass bulb 13 preferably just completely above the longitudinal edges defined by the two straight, straight and parallel edges 15 of the semi-cylindrical part 6 spanned level.

The bracket tube 4 facing end plate 7 has a thickness of approximately 6 mm, while the annular lamp mounting flange has a thickness of approximately 1 mm, and the additional mounting ring placed on the outside of this has a thickness of approximately 5 mm. The face plate 7 is provided with a circular through recess arranged concentrically to the light source socket, the inner diameter of which corresponds to the outer diameter of the lamp socket flange and mounting ring, so that this end plate 7 with minimal play on the opposite of the pipe outer diameter 4 reduced in diameter with regard to the mounting ring until it touches the front of the mounting tube 4 pushed on and in this position by means of the outside through the semi-cylindrical element 5 and the faceplate 7 screwed through grub screws 12 can be locked. This simple measure allows the main reflector assemblies 5 if necessary, by loosening only one, at most two, screws 12 from the bracket tube 4 can be loosened, and by loosening two additional screws, the lamp holder in question can be removed and replaced, for example.

How to do that 2 and 3 the end plates 7 . 8th in the area of their semicircular top edges 9 with approximately rectangular fillets 16 . 17 provided by the connection with the semi-cylindrical part 6 each form a slot running along its inside. The actual reflector plate with a thickness of, for example, only 0.2 to 0.8 mm from a longitudinal edge is in these slots 15 of the semicircular main reflector housing 6 inserted and held frictionally by the experienced curvature. Through this highly reflective sheet, the light source 14 light rays emitted upwards are reflected downwards, for example by the frosted glass bulb 13 and the eccentrically upward from the center of the main reflector 18 arranged placement of the same, the light emission is comparatively diffuse, that is, the downward facing, the main reflector 18 leaving light beam is only through the outline of the main reflector assembly 5 , especially by their long edges 15 , limited.

However, this is unsatisfactory in practice, since there is a risk of glare in the lower, brightly illuminated area, while in the area above one due to the longitudinal edges 15 the main reflector assembly 5 no light would be emitted at the defined level, so that the ceiling of a room in question would be dark.

To remedy these disadvantages, the lamp according to the invention 1 in addition to the main reflector assemblies 5 . 18 a total of two secondary reflectors 19 provided with a constant cross-section between the two outer end plates 8th of the two main reflector assemblies 5 extend. The outer end plates 8th For this purpose, they extend further downward than the inner end plates 7 , in which the upper, semicircular area by a lower, preferably also circular arc-shaped edge 20 is completed in a gentle curve just below the lower edge of the mounting tube 4 or a mounting ring attached to it on the face.

In contrast, the end plates extend 8th starting from the end regions of their upper, semicircular region in a straight extension by about 2 cm downwards 21 and are marked by a lower, slightly convex boundary line 22 completed. In the area of their two lower corners 23 is a through hole each 24 provided by the shaft one screw each 25 is penetrated. These screws 25 are from both sides in a tube provided with an internal thread at least in these end regions 26 screwed in, which is from an external end plate 8th extends continuously to the opposite. Each of these two pipes 26 serves to hold one lamellar secondary reflector each 19 , whose length corresponds approximately to the pipe length or is slightly shorter than this. The secondary reflector 19 has the shape of a sheet, but is preferably by a fold to improve stability 27 on its outer longitudinal edge 28 formed in two layers from a highly reflective, thin sheet with a thickness of, for example, 0.2 to 0.8 mm, that is to say with a total thickness of about 0.4 to 1.6 mm. The flush, flat edges of both layers of a secondary reflector 19 are also straight and - how 4 shows - in a longitudinal slot 29 of the pipe 26 inserted about to the opposite inside. For fixing the secondary reflector 19 in the tube 26 the inside corners are notched over a length of 1 to 2 cm, for example, so that the inside of the pipe 26 opposite end faces the pipe mouth areas are set back inside. This creates space for one in the tube 26 before fixing it with the screws 25 a screwable grub screw 30 , which causes the secondary reflector 19 can be firmly clamped. The notched areas of the secondary reflectors 19 have such a length that between the screwed grub screws 30 and the mounting screws 25 sufficient scope 31 remains.

As the 1 and 3 can be recognized by loosening the fastening screws 25 the secondary reflectors 19 in their swivel angle around the relevant axis 26 be adjusted. The secondary reflectors run in the preferred setting range 19 from the mounting axis 26 more or less increasing towards the outside. Looking at this from the bottom opening of the main reflector 18 outgoing beams, its edge area hits the secondary reflectors 19 , while the middle part of the radiation beam at an opening angle α between the two inner (proximal) edges 32 the secondary reflectors 19 can exit downwards. Furthermore, the edge located at the outermost edge of the main reflector beam should therefore 33 the secondary reflectors 19 are called the distal (distal) edge. As can be seen from the drawing, the recesses are 24 for fixing the proximal reflector edge 32 forming tubes 26 offset far outwards and thus have a distance that is only slightly smaller than the width B of the main reflector 18 , The one between the proximal edges 32 the secondary reflectors 19 and the long edges 15 of the main reflector 18 remaining gap has a vertical extent d, which is about 1 cm in the example shown. The light component passing through this gap is from the secondary reflector in question 19 caught and reflected towards the ceiling of a room.

The tops are for widening this edge bundle 34 the secondary reflectors 19 convexly curved along a circular cylinder jacket segment with a width b of approximately 3.5 cm and a radius of curvature r of approximately 5 to 7 cm.

How out 3a can be seen, the swiveling secondary reflectors 19 be adjusted so that one is under the long edge 15 of the main reflector 18 horizontal beam passing through 35 from the distal area 33 of the secondary reflector 15 just caught and reflected at a slightly rising angle of about 40 ° to illuminate the ceiling, while further inside on the top 34 of the secondary reflector 19 incident rays are reflected steeper upwards and thereby the close range above the ceiling light 1 brighten. At the same time, the secondary reflector points 19 in the area of its proximal edge 32 an angle of inclination that is approximately 45 ° or steeper, so that from the nearer longitudinal edge 15 of the main reflector 18 rays reflected vertically downwards through the secondary reflector 19 on top 34 of the opposite secondary reflector 19 and be distracted up from there. In this position it is therefore possible to choose between the opening angle? and the top opening angle β of the lamp 1 no light is emitted, so that an undesirable glare is completely excluded.

How 3b shows, the secondary reflectors 19 with the simplest means, ie by temporarily loosening the screws 25 , can be adjusted as required, with a steeper course of the secondary reflectors 19 the opening angle β of the upward emerging beam is reduced.

In the 5 and 6 a modified embodiment of the invention is shown. It is a cantilever wall light 36 with only one light source 14 ,

This wall lamp 36 is primarily characterized by the fact that a mounting tube projects horizontally from the wall in question 37 not on an upper sleeve of the holding tube 4 attached, but instead of a second main reflector assembly on the free end face of the holding tube 4 is set. For this purpose, it can, for example, be inserted into a mounting ring provided there and fixed by means of grub-like locking screws. The mounting tube 37 can also be used in this embodiment to receive the power supplies. For the mechanical stabilization of this bracket wall light 36 is an additional one, from the wall end 38 of the mounting tube 4 Support rod that runs obliquely upwards at an angle of approximately 30 ° to 60 ° 39 provided, which is also anchored to the wall in question and ensures that the mounting tube 37 under the load of the boom light 36 cannot bend. Instead of a pole 39 a pull rope made of metal, for example, can also be used. Line or rope 39 are, for example, the mounting rod 37 encompassing sleeve 40 established.

The only main reflector assembly 41 this embodiment 36 is distinguished, inter alia, by the fact that the housing part is also approximately semicircular in cross section in this embodiment 42 on his the holding tube 4 opposite end through one to the top of the lamp 43 semi-ellipse springing back 44 is limited so that in the side view according to 6 the outer edge 45 is projected into a plane inclined at an angle of 45 °, for example. Accordingly, in this embodiment, the outer end face 46 the main reflector assembly 41 with a horizontal kink 47 provided, in a common plane with the two longitudinal edges 15 of the cross-sectionally semicircular housing part 42 lies. The upper, semi-elliptical bordered part of the forehead 46 is with the matching semi-elliptical boundary curve 44 of the housing part 42 connected, for example soldered. To also the inside of the forehead 46 To use as a reflector, an almost congruent reflector plate is provided with a corresponding bend and on the inside of the front part 46 fixed, e.g. glued.

The lower part 48 the front end 46 lies in a vertical plane and is completely identical to the relevant part of the face plate 8th according to the embodiment according to the 1 to 4 ,

Another special feature of this arrangement is that a second end plate is missing 8th that in the first embodiment as an abutment for the secondary reflectors 19 was used. In this embodiment, the inner end plate could 7 be extended accordingly downwards and then as an abutment for the secondary reflectors 49 serve. However, this is not necessary because of the secondary reflectors 49 due to their thin cross-section of about 0.4 to 1.6 mm and their relatively short extension, which is about the maximum length of the main screen 42 matches, are so light that they only have one end 50 must be kept. This embodiment is therefore characterized in that the opposite end 51 the secondary reflectors 49 ends freely. In the area of this end 51 is therefore only that of fixing the secondary reflector plate 49 in the protected tube 52 serving grub screw 53 intended.

Because the inside faceplate 7 is not further extended downwards, so it is possible here, as in the first embodiment, that on the mounting tube 4 fixed mounting ring 54 both on the top and on the bottom using a grub screw 12 clamp. The fixation of the main reflector assembly 41 on the mounting ring 54 allowed by loosening the grub screws 12 swiveling the entire assembly with main and auxiliary reflectors 41 . 49 around one to the holding tube 4 concentric axis to be able to vary the main direction of direct light emission. An asymmetrical arrangement of the main reflector with respect to the vertical can partly be achieved with regard to the illumination of a ceiling by an also asymmetrical setting of the two secondary reflectors 49 be balanced.

The 7 to 9 show as a further embodiment of the invention, a floor lamp that can be used as a reading lamp 55 ,

This embodiment 55 is similar to the ceiling lamp 1 according to the 1 to 4 with the primary difference that instead of an upper connection sleeve 2 on the bottom of the holding tube 4 a pedestal 56 is arranged with a stand, not shown, which the entire lamp 55 carries and receives the power supply lines that emerge from the stand in the form of a cable provided with a power plug and possibly a foot switch.

In this embodiment, the two front end parts 46 identical to the bracket wall light 36 shaped, but this is not mandatory. With all types of luminaires, both types of frontal termination (flat plate 8th or kinked plate 46 ) be used. In addition, even when using a flat end plate 8th a correspondingly bent front reflector can be provided on the inside.

One from the preferred application of the floor lamp 55 additional device resulting as a reading lamp comprises two auxiliary reflectors 57 , each below a secondary reflector 58 are arranged. These auxiliary reflectors are worn 57 of one tube each 59 that the inclusion of a secondary reflector 58 serves. In this embodiment, the proximal ones are in the longitudinal slot 29 one tube each 59 inserted edges of the two secondary reflectors 58 provided with about two to three rectangular notches, so that in the inserted state on the surface of the tubes 59 results in a number of slots corresponding to the number of notches. These slots can be made from one of several sleeves 60 be penetrated, which before plugging in the secondary reflector 58 into the pipe in question 59 were pushed onto this and positioned at the relevant points. After locking the relevant secondary reflector 58 using the provided grub screws 30 are the sleeves at the same time 60 in the longitudinal direction of the pipe 59 fixed immovable, but can be rotated about their tube axis due to their rotational symmetry. Each of the sleeves 60 carries a welded, soldered or glued clamp on its outer circumference 61 preferably from a U-shaped sheet with a longitudinal slot accessible from the outside. After all on one tube 59 pushed on sleeves 60 are aligned so that their brackets 61 formed longitudinal slots 62 can be aligned with each other in these brackets 61 an auxiliary reflector 57 be inserted. The auxiliary reflector 57 consists preferably of a rectangular blank with a flat shape, the length of which is the length l of a secondary reflector 58 corresponds, and the width of which is approximately the same as the width b of a secondary reflector 58 , For fixing an auxiliary reflector 57 in brackets 61 can their thighs 63 with opposing holes 64 be provided. Either the auxiliary reflector also points 57 a corresponding recess so that it can be attached to a bracket, for example 61 can be riveted, or it has no recesses and by means of a clamp leg 63 screwed screw 65 becomes the body of the auxiliary reflector 57 in the opposite recess 64 pressed in and thereby locked positively. Additionally or alternatively, the auxiliary Flektor 57 of course in other ways in brackets 61 be determined, for example by welding, soldering or gluing.

The one with the auxiliary reflectors 57 connected sleeves 60 are like a transition fit on the slotted tube 59 set so the auxiliary reflectors 57 are self-locking in any position. As a result, they can be optimally adjusted from case to case with a quick handle, especially when the secondary reflectors are steeply inclined 58 an undesirable reflection of the edge of the beam under the proximal edge of the opposite secondary reflector 58 avoid or redirect a light beam directed in this way and thus glare-free downwards.

For all types of lights 1 . 36 . 41 with light emission concentrated downwards, it leads above the illuminant 13 . 14 arranged, hood-shaped main reflector l8 to a heat build-up in the area of the illuminant 13 . 14 , In order to avoid consequential damage to the latter, especially when using illuminants 13 . 14 additional measures for heat dissipation may be provided with a power consumption of 150 W or more. In this context, it has proven useful to arrange at least one approximately central ventilation slot in the main reflector and, if appropriate, in a housing receiving the latter, so that the heated air can escape through natural convection. Such a ventilation slot can be inserted and possibly glued in the main reflector 18 into the housing assembly 5 . 6 by joint processing, in particular milling.

Claims (23)

Lamp ( 1 ; 36 ; 55 ) with several reflectors, with a) at least one holder for fixing a light source ( 14 ), b) at least one approximately hood-shaped above the light source ( 14 ) arranged, concave arched main reflector ( 18 ) to redirect one from the light source ( 14 ) light portion emerging upwards near the bottom for the purpose of bundling the light in such a way that the light source ( 14 ) and / or the main reflector ( 18 ) outgoing beams through the edges ( 15 ) of the main reflector ( 18 ) is limited, and c) at least one reed reflector ( 19 ; 49 ; 58 ) in the area of the outer edge of the main reflector ( 18 ) limited beam and arranged and / or adjustable such that the part of the beam falling on it is deflected upwards, characterized in that d) the secondary reflector (s)) ( 19 ; 49 ; 58 ) is set or adjustable in such a way that it is inclined to rise from its proximal area (areas) to its distal area (areas). Luminaire according to claim 1, characterized in that the light source ( 14 ) is rotationally symmetrical, for example in the form of a halogen rod. Luminaire according to claim 2, characterized in that the holder for the light source ( 14 ) is arranged such that its axis of symmetry is aligned approximately horizontally; Luminaire according to claim 3, characterized in that the main reflector ( 18 ) approximately symmetrical to the vertical plane through the axis of symmetry of the light source ( 14 ) is arranged. Luminaire according to one of claims 2 to 4, characterized in that the main reflector ( 18 ) has an elongated central part with an approximately constant cross section, the longitudinal axis of which is parallel to the axis of symmetry of the light source ( 14 ) runs. Luminaire according to claim 5, characterized in that the elongated central part of the main reflector ( 18 ) has an approximately circular cylindrical segment-shaped curvature, preferably an approximately semi-cylindrical shape with a width B and a curvature radius R = 0.5 * B. Luminaire according to claim 5 or 6, characterized in that the main reflector ( 18 ) in a lamp housing ( 5 ; 41 ) recorded, especially in the front of it ( 7 . 8th ) formed, groove-shaped depressions ( 16 . 17 ) is supported. Luminaire according to one of claims 2 to 7, characterized in that the longitudinal edges ( 15 ) of the central part of the main reflector ( 18 ) are straight and parallel to the axis of symmetry of the light source ( 14 ) run. Luminaire according to one of the preceding claims, characterized in that the secondary reflector (s)) ( 19 ; 49 ; 58 ) is set or adjustable in such a way that its distance from the light source ( 14 ) increases from his (her) (proximal) area (areas) facing the center of the beam to his (her) area (areas) that catches the edge of the beam (distal). Luminaire according to one of the preceding claims, characterized in that the secondary reflector (s)) ( 19 ; 49 ; 58 ) at one to the adjacent area of the edge ( 15 ) of the main reflector ( 18 ) attached approximately parallel axis, in particular pivotable on the lamp housing ( 5 ; 41 ) or chassis is (are) articulated. Luminaire according to claim 10, characterized in that the (each) a secondary reflector ( 19 ; 49 ; 58 ) load-bearing attachment or swivel axis (s) ( 26 ; 52 ; 59 ) at the end on at least one end plate ( 8th ; 46 ) of the lamp housing ( 5 ; 41 ) is (are) supported. Luminaire according to claim 10 or 11, characterized in that the fastening or pivot axis ( 26 ; 52 ; 59 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) in the area of its proximal edge (s) ( 32 ) lies. Luminaire according to claim 12, characterized in that the secondary reflector (s) ( 19 ; 49 ; 58 ) in a tubular fastening or swiveling axis provided with a longitudinal slot ( 26 ; 52 ; 59 ) is inserted and clamped. Luminaire according to one of claims 10 to 13, characterized in that the fastening or pivoting or articulation axis ( 26 ; 52 ; 59 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) approximately vertically below the relevant longitudinal edge ( 15 ) of the main reflector ( 18 ) is arranged, but is preferably slightly offset towards the center of the lamp. Luminaire according to one of claims 10 to 14, characterized in that the main reflector ( 18 ) perpendicular to the longitudinal axis of the light source ( 14 ) measured width extension B, and that the fastening or pivoting or articulation axis ( 26 ; 52 ; 59 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) a (vertical) distance d to the relevant longitudinal edge ( 15 ) of the main reflector ( 18 ), where: 0.25 * B ≤ d ≤ B , Luminaire according to one of claims 10 to 15, characterized in that for the distance b between the proximal ( 32 ) and distal edge ( 33 ) of the relevant secondary reflector ( 19 ; 49 ; 58 ) and the (vertical) distance d of the attachment or swivel or articulation axis ( 26 ; 52 ; 59 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) to the relevant longitudinal edge ( 15 ) of the main reflector ( 18 ) applies: d ≤ b ≤ 6 * d , preferably: 1.4 * d ≤ b ≤ 5 * d , in particular: 1.8 * d ≤ b ≤ 4 * d , Luminaire according to one of the preceding claims, characterized in that the secondary reflector (s)) ( 19 ; 49 ; 58 ) has an elongated shape with an approximately constant cross section (-en). Luminaire according to claim 17, characterized in that the longitudinal axis of the secondary reflector (s) (s) ( 19 ; 49 ; 58 ) parallel to the relevant longitudinal edge ( 15 ) of the central part of the main reflector ( 18 ) runs (run). Luminaire according to one of the preceding claims, characterized in that the light source ( 14 ) facing surface ( 34 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) is convex, preferably runs approximately along a circular cylinder segment with an (approximately) constant radius of curvature r. Luminaire according to claim 19, characterized in that the (mean) radius of curvature r of the secondary reflector (s)) ( 19 ; 49 ; 58 ) is greater than the (mean) radius of curvature R of the main reflector ( 18 ). Luminaire according to claim 19 or 20, characterized in that for the (mean) radius of curvature r of the secondary reflector (s)) ( 19 ; 49 ; 58 ) and the (vertical) distance d between the attachment or swivel or articulation axis ( 26 ; 52 ; 59 ) of the secondary reflector (s) ( 19 ; 49 ; 58 ) and the relevant longitudinal edge ( 15 ) of the main reflector ( 18 ) applies: 3 * d ≤ r ≤ 8 * d , preferably: 3.5 * d ≤ r ≤ 7 * d , in particular: 4 * d ≤ r ≤ 6 * d , Luminaire according to one of claims 10 to 21, characterized in that concentric to the fastening or pivot axis ( 26 ; 52 ; 59 ) of a secondary reflector ( 19 ; 49 ; 58 ) an auxiliary reflector ( 57 ) is articulated in order to further narrow the part of the bundled light beam that is not deflected upward. Luminaire according to one of the preceding claims, characterized in that two lamp units ( 5 ; 41 ) are arranged in a row one behind the other, with the area ( 4 ) between the two light units ( 5 ; 41 ) the common power supply is arranged.