DE29607065U1 - Extruded light housing - Google Patents

Description

Mitronic GmbH
10115', Description

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Extruded luminaire housing

The invention relates to a lamp housing that is suitable for accommodating any lighting source, such as halogen lamps, HQI lamps, fluorescent lamps, incandescent lamps, and should be variable in terms of both suspension and the lighting to be provided (direct, indirect, floodlighting, linear). At the same time, the lamp housing should be easy to assemble and inexpensive to manufacture (problem of the invention).

The invention solves this problem by means of a lamp housing that is obtainable by extrusion or pultrusion (claim 1). An aluminum preform is preferred from which the profiled lamp housing is produced by extrusion or pultrusion.

If such a profiled lamp housing is chosen, a considerable length can be achieved in the extrusion or extrusion direction (axis L of the lamp housing), which is a multiple of the width and depth in the main and secondary axis direction (axes A and B) of the lamp housing, which is essentially flat-oval in cross-section. A considerable length compared to the width and depth of the lamp (axes A and B) refers, in the sense of the invention, to a lamp housing that is continuously designed as a profile over several meters, without the need for connection techniques in the longitudinal direction. This considerable length does not mean, however, that the lamps according to the invention always have to be mounted in this length; they can easily be cut to shorter lengths, they can even be cut at an angle of <90° (e.g. 45° or 30°) to form rows of lights that run continuously "around a corner", whereby the corner does not necessarily have to be 90°, but can be any angle between 180° and 0°. The profiled lamp housing enables the assembly of a row of lights that can be joined together like a picture frame with mitred bend areas or corner areas, thus achieving easy assembly with any design.

Mitronic GmbH
iöllS; Description

&bull;: %

The flat oval design affects the main and the secondary axes �Aacgr; and B (the height/depth and the width of the lamp), whereby the oval shape is still recognizable, but the lamp is many times wider in the main axis direction than it is deep in the secondary axis direction. In terms of construction, the flat oval design can be imagined as the merging of two oppositely curved cylinder segments, which cylinders have a radius R that is very large compared to the secant section.

&iacgr;&ogr; of the cylinder which forms the cylinder segment (claim 2). However, the flat oval design does not mean in the sense of the invention that cylinder segments must necessarily form the flat oval shape; parts or sections of the cylinder segments placed against one another (Figure 5) can also be designed essentially as a plane, provided that the overall impression of a flat oval shape is not abandoned.

One of the cylinder segments can have a recess that has a rectangular shape (claim 4). It serves as the opening for the light outlet. The opposite area of the other cylinder segment is not open and forms the rear wall of the profiled lamp housing. A concealed cable duct (shaft) can be formed on it, which is formed after inserting retaining plates in receiving grooves running there between the mentioned rear wall and the inside of the inserted plate (claim 17). The lamp retaining plates are inserted from the front and result in the lamp being able to be placed at any point on the elongated profile in the longitudinal direction of the axis L. Blind plates can be placed between the insert plates holding the lamps, which lead to the shaft being completely covered.

In the edge area of the light opening, receiving grooves are provided in order to reach the transparent cover of the lamp in the area of the light outlet (claim 11). These receiving grooves also run continuously from end to end of the elongated profile and allow the

Mitronic GmbH
101 25; Description

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&bull;&diams; ·

Transparent cover and the metallic intermediate plates between individual transparent sections, whereby the transparent sections are located directly under the lamps on the lamp holding plates that are also inserted and whereby the metallic (opaque) covers are located in the intermediate area, where the blind plates were mentioned previously.

The covers of the continuous light outlet opening are inserted and fixed in a special way (claims 12 to 14).

&iacgr;&ogr; The glass covers and the metal covers are fixed in two planes one above the other and offset from one another in the longitudinal direction L. The metal cover and the glass cover have different widths in the main axis direction A, and accordingly the receiving grooves also have different widths in this direction (claim 12).

The wider of the receiving grooves opens on both sides of the light outlet opening into a continuous channel, which forms an undercut with respect to this receiving groove in order to be able to insert spacer rod pieces in the longitudinal direction L, which come to lie between two metal covers and next to the transparent cover (claim 13), which lies between the metal covers.

With the spacers in the undercut side channels, it is possible to position the opaque covers at the exact distance, even if they are inserted one after the other in the longitudinal direction. The glass plates are placed at the precisely defined distance on a different level above the metal cover plates; they can be additionally fixed in the longitudinal axis direction at both ends by a locking, yielding elevation so that they can be inserted in the longitudinal direction L together with the metal cover plates and the spacers.

The above-described fixing and determination of the exact distance between the transparent areas and the covered area of the lamp allows the entire coverage of

Mitronic GmbH
&iacgr;&ogr;&iacgr;15; Description

to be controlled from the front and pushed in completely from the front. Despite the easy assembly and simplified installation, it is possible to define and position the light outlets precisely.

To suspend the profiled lamp, a T-shaped undercut groove can be arranged on the side of the inserted lamp plate facing outwards (claim G), into which rail- or block-shaped holding elements can also be inserted from the front, to which holding rods or holding ropes are attached.

A preferred way of attaching the profiled lights works without the T-shaped suspension grooves (claim 19). In this case, triangular plates are used which are attached to the front sides of the several lamp housings arranged in a row. The lamp housings are rotated around one corner of the triangular plate alternately by a small positive or negative angle, so that an elongated line of lights is created in which the direction of light runs alternately in two definable directions. By pivoting the individual lamp housings, the lamps are prevented from causing glare because they can be pivoted at a predefined small angle to the ceiling, from which the triangular plates can be suspended, and a viewer standing on the floor is prevented from looking directly into the light source in the lamp housing.

Mitronic GmbH
10115; Description

The invention is explained and supplemented below using several embodiments.

Figure 1 is a perspective view of a first embodiment of the profiled lamp housing with several longitudinally extending grooves 25a, 25b, 21a, 21b, 16a, 16b, 15, 15a, 15b, 26a, 26b which have different functions.

&iacgr;&ogr; A section is marked in a circle in Figure 1 , 'it

is shown enlarged in Figure 3 .

Figure 2 defines three axial directions A, B and L, whereby the longitudinal direction is defined by the axis L, in which the elongated profile of the lamp housing and all elongated grooves run. The axes A and B form the main axis and the minor axis of an oval compressed in the minor axis direction. The minor axis direction is also often referred to below as the lamp depth or lamp height, while the main axis direction is described as the lamp width or width direction.

Figure 3 is the enlargement of the edge region 21b of the light outlet opening 13, as shown in Figure 1 , into which glass plates 50 and opaque (usually metallic) plates 40 are held inserted from the front.

Figure 4 is a bottom view of the light outlet opening 13, with those elements which can be seen in front view in Figure 3 .

Figure 5 is a structural illustration of the flat oval housing, which is composed of two cylinder segments 11,12, each of which has a secant height h/2 relative to a center plane M. The radius R of the cylinder segments is shown schematically, the

Mitronic GmbH
10115; Description

The corresponding center point x,y of the cylinder is far outside the lamp housing formed by the two cylinder segments 11,12.

Figure 6 is a front view of a lamp row in which triangular cover plates 80 alternately tilted lamp housings L1,L2 against each other in the direction of inclination a, ^a1 are connected to form a continuous lighting row.

Figure 1 shows a short section of an elongated housing profile made up of two cylinder segments 11, 12. The construction, referred to as the flat oval shape of the housing profile in cross section, is shown schematically in Figure 5. The cylinder segments 11, 12 placed against each other there define the top (cylinder segment 11) and the bottom or light outlet side 12 of the lamp housing. The latter light outlet side (cylinder segment 12) has a light outlet opening 13 running from end to end, which can be directed downwards (direct lighting), to the side or upwards (indirect lighting). The global orientation of the elongated profile of Figure 1, with a schematic construction of Figure 5, is shown in Figure 2, where a longitudinal axis L is defined that runs from end to end of the elongated profile, a main axis direction A that runs in the width direction of the lamp profile and a minor axis B that runs in the depth or thickness direction of the lamp profile. These three axes are used below as a reference for the terms height, width, depth and length because the lamp can be hung, suspended and fixed in any direction in order to achieve direct or indirect wall or ceiling lighting. This makes it impossible to use terms such as top, bottom, right and left to explain the profile; instead, a housing-oriented coordinate system with a center of gravity S should be used, which is the intersection point of the aforementioned axes A, B and L.

Mitronic GmbH
10115; Description

The two cylinder segments 11, 12 each have a zenith 11z, 12z, which define a distance that is twice as high as the respective cylinder segment height h/2. The tapered edge areas 12a, 11a and 12b, 11b, each starting from the zenith 12z and 11z, lead to edge lines 10a, 10b, which define the '■ limitation of the lamp housing in the main axis direction. This defines the width of the lamp housing as the distance between the edge lines 10a, 10b, while the

&iacgr;&ogr; Depth or height of the housing in the minor axis direction B is defined by the value h. In the longitudinal direction L, the lamp housing extends in such a way that all cross sections of the longitudinal direction L have the same cross-sectional profile, which is the result of the extrusion process or extrusion process of the exemplary aluminum profile.

The radii R used to construct the cylinder segments 11, 12 originate from centers x, y that are located far outside the lamp housing. A center plane M runs perpendicular to the connecting line between the cylinder centers x, y and connects the two edge lines 10a, 10b. The greatest distance of each cylinder segment from this center plane M defines the zenith 11z, 12z, which is a zenith line in the longitudinal axis direction L.

In one of these zenith lines 11z (in the rear wall of the housing, which does not have the light outlet opening), a T-shaped receiving groove 15 is provided, to which the lamp can be connected in a torsion-resistant manner at its end faces by inserting a flat bar piece to form a total length that exceeds the length of the lamp profile. Suspension devices can also be arranged on this inserted flat rail piece, which enable a light strip made up of many lamp profiles arranged in a row to be hung up.

Mitronic GmbH
10115; Description

The other zenith line 12z is not present in the finished lamp housing, since it is located in the recess 13 for the light. This recess 13 is opposite the previously mentioned zenith line 11z and has receiving grooves 21a, 21b on the edge, at the inner ends of the remaining cylinder segments 12a, 12b, which are explained in more detail in Figure 3 .

Starting from the receiving grooves 21b,21a, inner walls 20a,20b run perpendicular to the centre plane M, which in their upper area

&iacgr;&ogr; conically angled for a short distance to also elongated receiving grooves 25a, 25b, which run at a considerable distance from the mentioned T-groove 15 in the rear wall zenith 11z. The latter receiving grooves 25a, 25b serve to hold lamp fastening plates, which are inserted in the longitudinal axis direction L into the grooves 25a, 25b from the front. At the points where the lamps come to lie in the longitudinal axis direction L of the elongated profile, translucent cover plates, in particular glass plates 50, are provided in the receiving opening 13. In the places where no lamps are to be placed, since the lamp plates can be placed in the profiles at a predetermined distance, opaque cover plates 40, in particular made of thin aluminum sheet, are placed in the above-mentioned receiving grooves 21a, 21b.

Further elongated outward-facing grooves 16a, 16b are provided in the tapered edge zones of the cylinder segments. These grooves 16a, 16b run in the edge lines 10a, 10b, which define the boundary of the lamp housing in the main axis direction A.

The several pairs of elongated receiving grooves described in this way, each running through the lamp housing, characterize the lamp profile and allow the complete assembly of a finished lamp in a simplified and at the same time versatile manner. Only the T-shaped receiving groove 15 does not appear to have two spaced grooves on both sides of the minor axis B, but two undercut grooves are shown in Figure 1.

Mitronic GmbH
10115; Description

Grooves 15a, 15b can be seen, which form a pair of grooves and together serve as an undercut holder for a flat profile for connecting and hanging purposes of the lamp profile. On this side and the other side of the minor axis B there are therefore an equal number of elongated, continuous grooves

which each form a (more or less spaced) '■ pair of grooves.

The pair of grooves 21a, 21b on the edge of the light outlet opening 13 is explained in more detail in Figure 3. Figure 3 shows a receiving groove 21b from this pair of grooves, which in turn consists of two elongated guides 49, 59 which have a different depth in the B axis direction. The guide 59 is intended to receive a glass plate 50, the thinner guide 4 is intended to receive a metal cover plate 40. The guide 49 opens into a channel 69 which is undercut with respect to the guide 4 9 and extends in the direction of the previously mentioned thicker guide 5 9. The width in the main axis direction A of the two groove guides 49, 59 is selected to be different, so that the guide which is thinner in the secondary axis direction B is wider in the main axis direction A.

Figure 4 illustrates the insertion of a metal cover plate 40, 41 and a transparent glass cover plate 50, 51, controlled from the front. Spacers 60a, 60b in the form of rods are provided in the area of the glass cover plate, which are adapted to the channel 69 of the receiving groove profile. In the area of the glass cover 50, 51, they define the distance between the metal plates 41, 40 in order to obtain a defined length of the effective light outlet opening 13. In this area, the lamp is also attached by inserting a plate in the other grooves 25a, 25b, which were mentioned above as another pair of grooves.

Mitronic GmbH
10115; Description

·1&ugr; ·

The glass plate 50 and the metal cover plate 40 are arranged in two different planes, but these two plates are directly adjacent and touching each other, with the glass plate 50 being held in place by two retaining cams 70a, 70b, which are arranged on the front ends of the metal plates approximately in the middle and in

L-direction slightly indented from the edge, ■■is mounted so that it cannot slip in the longitudinal axis direction L, while the individual elements of Figure 4 are inserted one after the other from the front into the profile of Figure 1.

Not shown in the picture is the insertion of the lamp holding plates into the other grooves 25a, 25b, which are arranged near the back wall of the lamp (the cylinder segment 11).

They have a distance in the direction of the main axis that is slightly smaller than the distance of the previously described in detail receiving grooves for the glass/metal covers of the light outlet opening 13, but the distance of the holding grooves for the lamp plates is nevertheless considerably compared to the distance of the individual grooves 15a, 15b of the T-slot area 15 in the zenith 11z.

The lamp plate holding grooves 25a, 25b are connected to the cover receiving grooves 21a, 21b s 25 via inner walls 20a, 20b.

The connecting walls 20a, 20b have a substantial section that runs perpendicular to the center plane M and that extends from the glass/metal receiving grooves 21a, 21b.

In the area near the receiving grooves 25a, 25b for the lamp holding plate, the wall 20a, 20b runs inclined in the direction of a line that is parallel to the zenith line 11z but outside the lamp housing.

Mitronic GmbH
10115; Description

»11 ·

Further elongated grooves can be arranged on the fold lines of the walls 20a, 20b that are formed in this way, and these can also be designed as T-slots. This provides the additional possibility of making front-side connections inside the lamp by inserting short

Rod pieces at the joints of the individual lamp profiles, "which can be guided in the grooves 26a, 26b and clamped there by screws (in A direction). The latter grooves 26a, 26b, which serve as a connection under tension, can be arranged on &iacgr;&ogr; the above-mentioned bend lines of the walls 20a, 20b * ' .

Additional elongated grooves can be located in the chambers on both sides, which run between the respective walls 20a and 20b and the edge lines 10a, 10b according to Figure 1. These elongated grooves are each open towards the interior of the chamber.

The undercut grooves 16a, 16b in the edge lines 10a, 10b, which have not yet been described in more detail but have already been mentioned above, are used to insert holding pieces to which devices such as drills or other objects can be attached in a suspended manner. If such suspended objects are not required, cover profiles made of plastic can be inserted or pushed into the undercut edge line grooves 16a, 16b. These profiles are essentially triangular in shape and cover the flat oval lamp housing in the edge lines in a visually enhancing manner.

Figure 6 shows a triangular plate 80, of which a large number can be arranged one behind the other in the longitudinal direction L (perpendicular to the plane of the paper). Between each two of these plates 80 a lamp L1 or L2 (etc.) is attached, as previously described with reference to Figure 1. The distance between the triangular holding plates 80 can be several meters, compared to a width of 10 or 20 cm of the lamp L1 or L2. A suspension 85 in the form of a rope or a rod can be arranged at a corner 81 of the triangular plate.

Mitronic GmbH
&Igr;&ogr;&iacgr;15; Description

Each luminaire is to be pivoted from the vertical, which is defined by the suspension 85 and corresponds to the perpendicular bisector of the edge 81 to the opposite side of the triangle, by an angle a which is between 10 and 30°.

The maximum angle α is defined as half the angle ^% of the corner angle 81 of the triangular plate 80.

If the plate 80 is formed on the same side, this δ angle is 60°, so that the swivel range of the lamp Ll is between δ and 30°.

The lamp L2 which follows lamp L1 in the longitudinal direction L is pivoted in a direction α ¹ which is directed in a different direction from the mid-perpendicular of corner 81 to the opposite side of triangular plate 80 than the pivot angle a described above . The lights in the light band thus formed are pivoted outwards in this way (alternatively +30°, -30°, +30°, etc.) from the mid-perpendicular of corner 81 to side 82 and thus allow the formation of a line of lights from a large number of extruded lamps in order to enable indirect lighting 11, 12 which does not dazzle a viewer. A choice of α =« ¹ is one possibility.

Depending on the location of the suspension 85, the angles α and a' oriented relative to one another can also be selected differently, e.g. if the suspension 85 is arranged close to a wall and the lamp L2 is intended to provide indirect wall lighting 12, while the lamp L1 (and the lamp after that pivoted at the same angle) is intended to provide indirect ceiling lighting 11.

Claims (1)

Mitronic GmbH
10115; Claims · * ·· ···· · » : :i : ■
·· ··· ·» ·· Expectations: 1. Profiled lamp housing with a substantially flat oval cross-section and a considerable continuous length (axis L), obtainable by extrusion or pultrusion, in particular from an aluminium preform. 2. Profiled lamp housing according to claim 1, in which the flat oval shape consists of two oppositely curved &iacgr;&ogr; cylinder segments (12a,12b,11a,lib), the radius (R) of the cylinder being very large compared to the secant section (h/2) of the cylinder segment defining the section of the cylinder, and the ends of the two cylinder segments (11a,lib;12a,12b) forming two continuous edge lines, defined by continuously tapered cylinder sections, between which edge lines a connecting plane is defined as the center plane (M) of the profiled lamp housing. 3. Profiled lamp housing according to one of the above-mentioned claims, in which the center plane (M) to the zenith (11z, 12z) of the respective cylinder segment (11a, 11b; 12a, 12b) has the distance (h/2) that the secant section defines in the radial direction (R). 4. Profiled lamp housing according to one of the above-mentioned claims, in which the one cylinder segment (12a, 12b, 12z) has a recess (13) which is approximately rectangular and extends from end face to end face in the longitudinal axis direction (axis L) of the profiled lamp housing, which recess (13) is provided as a light opening of the profiled lamp housing. 5. Profiled lamp housing according to claim 4, in which the recess (13) has a width (b) which in the main axis direction (A) is approximately 1/3 to 2/3 of the distance between the edge lines (10a, 10b), which edge lines define the width in the main axis direction (axis A) of the lamp housing. Mitronic GmbH
10115; Claims 6. Profiled lamp housing according to one of the above-mentioned claims, in which a T-groove (15) runs in the zenith (Hz) of one cylinder segment (11,-Ha ₇ IIb), into which a flat rail can be inserted at least a short distance on the front side in order to connect two profiled lamp housings at the respective front side in a torsion-resistant manner. "7. Profiled lamp housing according to one of the above-mentioned claims, in which in the edge lines (10a, 10b) preferably &iacgr;&ogr; undercut grooves (16a, 16b) which are intended for holding suspended objects or as a receptacle for edge-side plastic panels, which panels have a substantially triangular cross-section and are inserted in the longitudinal direction (axis L) or inserted or clamped in the main axis direction (axis A). 8. Profiled lamp housing according to one of the above-mentioned claims, in which two spaced-apart walls (20a, 20b) are provided perpendicular to the center plane (M) between the two edge lines (10a, 10b), which connect the two cylinder segments (Ha, Hb; 12a, 12b). 9. Profiled lamp housing according to claim 8, wherein the Walls (20a,20b) run parallel over an area that is longer than half the distance from zenith (Hz) to zenith (12z) of the two cylinder segments (11,12). 10. Profiled lamp housing according to claim 8 or 9, in which the inner walls (20a, 20b) in the parallel region are spaced apart so that they end immediately next to the rectangular opening (13) on the one cylinder segment (12a, 12b). Mitronic GmbH
10115; Claims 11. Profiled lamp housing according to one of claims 8 to 10, in which in the area of the (first) wall openings to the one cylinder segment (12, 12a, 12b) continuous receiving grooves (21a, 21b) are provided from end face to end face (axis L), into which metallic cover plates (40, 41) and glass cover plates (50, 51) can be inserted in the longitudinal direction. 12. Profiled lamp housing according to claim 11, in which the γ receiving grooves (21a, 21b) have two rectangular guides (59, 49) of different widths (axis A) lying one above the other in the side axis direction (axis B), for the glass plate (50, 51) and the metal cover (40, 41) which are inserted alternately and lie directly one above the other in two planes. 13. Profiled lamp housing according to claim 12, in which the wider of the guides (49) opens into an undercut channel (69) arranged at its end, into which a spacer rod (60a, 60b) can be inserted. 14. Profiled lamp housing according to claim 13, in which the channel (69) is substantially cylindrical and has a diameter which is greater than the height in the minor axis direction (axis B) of the guide (49) which is wider in the major axis direction (axis A) and leads tangentially into the outer section of the guide (49). 15. Profiled lamp housing according to one of the above-mentioned claims, in which at (second) opening lines of the inner walls (20a, 20b) to the other Cylinder section (11a,lib), which is opposite the opening (13) in the first cylinder section (12a,12b), in the longitudinal axis direction (axis L) from end face to end face continuous grooves (25a,25b) run into which retaining plates for pre-mounted lamps (halogen, HQI, fluorescent lamp, incandescent lamp) can be inserted. Mitronic GmbH
10115; Claims 16. Profiled lamp housing according to claim 15, wherein the distance between the lamp holding grooves (25a, 25b) in the main axis direction (axis A) is considerable, in particular between 1/3 and 2/3 of the distance between the edge lines (10a ₇ 10b). 17. Profiled lamp housing according to claim 15 or 16, in which the or several illuminant plates (&eegr;) inserted into the retaining grooves (25a, 25b) are &iacgr;&ogr; Cylinder segment section from the zenith (Hz) to the two mouth lines (25a, 25b) forms a shaft that runs from end to end through which cables, lines and other connections, in particular those for the lighting devices on the inserted plate, can run in a concealed manner. 18. Profiled lamp housing according to one of claims 15 to 17, in which the walls (20a, 20b) run towards the second mouth lines at an incline towards one another over a short section, starting from the significantly longer parallel sections of the walls (20a, 20b) in the secondary axis direction (axis B). 19. Profiled luminaire line made of several profiled Lamp housings (Ll, L2) according to one of the above-mentioned claims, characterized by vertically aligned triangular plates (80) on which the plurality of profiled lamps are arranged in a horizontally aligned row, wherein the rowed lamp housings (Ll, L2) are alternately pivoted against the bisecting perpendicular from the upper corner to the opposite side (82) or to the line formed by the upper corners (81) of the triangular plates (80) by a small positive or negative angle (α,α ¹ ), in particular between ±10° and ±30°. 20. A line of luminaires according to claim 19, suspended (85) on at least two of the triangular plates (80).