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EP4446647A1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP4446647A1
EP4446647A1 EP24165598.4A EP24165598A EP4446647A1 EP 4446647 A1 EP4446647 A1 EP 4446647A1 EP 24165598 A EP24165598 A EP 24165598A EP 4446647 A1 EP4446647 A1 EP 4446647A1
Authority
EP
European Patent Office
Prior art keywords
luminaire
housing
edge
shaped cover
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24165598.4A
Other languages
German (de)
English (en)
Inventor
Thomas Schreiber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trilux GmbH and Co KG
Original Assignee
Trilux GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trilux GmbH and Co KG filed Critical Trilux GmbH and Co KG
Publication of EP4446647A1 publication Critical patent/EP4446647A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses

Definitions

  • a lamp which is of the generic type in that its translucent cover forms a secondary optic and the cover has a retaining edge which is designed to engage with a fastening edge.
  • the known lamp, or rather its lamp housing, has an elongated design which has opposite side sections in the longitudinal direction. On the opposite side sections The translucent cover can be mounted and removed.
  • the light can be attached to a building structure, for example a wall or a ceiling. Installation in which the light is integrated into the building structure is preferred. For example, it can be built into a suspended ceiling for integration.
  • the suspended ceiling can be suspended using a grid-shaped support rail system.
  • the light Designed as a ceiling light or recessed ceiling light, the light emits light downwards in a vertical main beam direction (downward light source).
  • the light can have electrical functional elements, for example an operating device, a control and/or a sensor module, IR sensor, etc.
  • the translucent cover In order to attach a lamp of this type to a building structure or to install it in a suspended ceiling or wall paneling, it is advisable if the translucent cover is detachably mounted.
  • the translucent cover also has opposite side sections in the form of vertical sections, which must interact with the complementary opposite side sections of the lamp housing to form an undercut. This makes the known lamp structurally complex. Over the life of the lamp, wear of the undercut vertical sections is problematic, which is why engagement deteriorates over the life of the lamp. This affects the handling and reliability of the connection. between the lamp housing and the cover.
  • the invention is based on the object of proposing an improved luminaire which at least partially improves the above problems.
  • the object is achieved in that the holding edge of the translucent disc-shaped cover has a holding surface which is provided on that underside of the disc-shaped cover facing away from the lamp housing, and in that the fastening edge of the lamp housing has a supporting edge surface directed towards the interior of the lamp housing, which cooperates with the holding surface of the holding edge of the translucent disc-shaped cover.
  • the proposed measure simplifies the construction considerably.
  • the holding surface of the cover needs to be placed on the supporting edge surface of the fastening edge of the luminaire housing, or these two surfaces, i.e. the holding surface and the supporting edge surface, need to be brought into contact with each other.
  • the translucent cover rests with its own weight on the supporting edge surface of the fastening edge of the luminaire housing, i.e. the holding surface of the cover rests on the supporting edge surface of the fastening edge. In this way, sufficient frictional contact is established.
  • the contact between the holding surface and the supporting edge surface advantageously defines the optical distance between the secondary optics and the light source, or between the secondary optics and the primary optics, which assigned to the light source.
  • the retaining edge on the underside of the translucent cover can be in the same plane as its radiating surface.
  • the surface finish of the retaining edge is also identical to the surface finish of the radiating surface.
  • the finish of the retaining edge on the top of the translucent cover is also identical to the surface finish of the incident surface.
  • the plate-shaped semi-finished product can be a monolithic body or, for example, several bodies that are loosely layered or made of several interconnected layers in a sandwich construction in order to influence the light emitted by the light source using certain optical material properties.
  • the light can, for example, be homogenized and/or the light distribution can be optically directed in order to obtain a glare-reducing property or to minimize direct glare.
  • the disc-shaped body can be easily cut out of a plate-shaped semi-finished product that has the desired optical properties in the required external dimensions, it is very easy to produce a lamp in a different size. This makes varying the size of the translucent cover particularly easy and cost-effective.
  • the luminaire housing expediently has a housing base, opposite which the radiation opening is arranged.
  • the light source is assigned to the base of the housing and radiates in the direction of the radiation opening or through it, or, when mounted, radiates through the translucent cover.
  • the light source is an electronic light source, particularly preferably an LED light source.
  • This light source can be a component of the lamp or can be designed as a replaceable light source.
  • the translucent cover is larger than the free area of the radiation opening, whereby the disc-shaped cover preferably completely covers the radiation opening in the final installation position.
  • the translucent disc-shaped cover can be inserted into the luminaire housing, namely either by the disc-shaped cover being able to be inserted through the radiation opening in an inclined position relative to the plane of the latter and/or by the translucent disc-shaped cover being elastically flexible and being able to be inserted into the luminaire housing through the radiation opening in a temporarily deformed shape in order to automatically return to its neutral, undeformed shape within the luminaire housing.
  • the cover In order to install the translucent cover in the luminaire housing, the cover must be inserted through the radiation opening into the interior of the luminaire housing in an inclined position or in an elastically deformed shape. Inside the luminaire housing, the cover can then be aligned parallel to the plane of the radiation opening and its holding surface can be brought together with the supporting edge surface of the luminaire housing. This makes installation particularly easy.
  • the diagonal of the cover can be shortened when viewed in the projection area of the beam opening if it is placed at an angle relative to the plane of the beam opening. It then fits through the beam opening and can be inserted into the interior of the luminaire housing. The cover is then aligned parallel to the plane of the beam opening and placed from above onto the supporting edge surface of the mounting edge.
  • the translucent cover can be of a rigid shape and can be inserted and laid down in its neutral actual shape on the supporting edge surface of the fastening edge.
  • the translucent cover can be equipped with an elastic property that allows it to be slightly deformed, in particular to be bent and/or twisted in order to temporarily reduce its neutral length and/or neutral width a little just for the assembly process.
  • the translucent disc-shaped cover is conveniently arranged with a clearance on its side edge within the luminaire housing.
  • the clearance creates a space for movement between the edge of the cover and the luminaire housing. This is beneficial because the cover is subject to expansion or contraction due to temperature differences, for example.
  • the luminaire housing is provided with at least one centering means, whereby the translucent disc-shaped cover can be centered in relation to a longitudinal axis of the luminaire housing by means of the centering means.
  • This measure prevents the luminaire housing from becoming distorted due to alternating expansion and contraction. the cover moves to one side of the luminaire housing and an undesirable gap forms on the opposite side. Instead, the cover expands and contracts symmetrically on both sides of the luminaire housing when held by the centering device.
  • the luminaire housing is provided with at least one mechanical securing element, by means of which the position of the holding edge of the translucent disc-shaped cover is fixed relative to the fastening edge of the luminaire housing.
  • the securing element prevents the cover from being moved towards the base of the housing.
  • the securing element essentially acts as a hold-down device. It is very useful for a ceiling light or recessed ceiling light, for example.
  • the underside of the cover has to be cleaned from below using an aid. For cleaning, the aid is handled from below and can push the cover upwards, which risks damage to the light source or other built-in functional elements.
  • the securing element simply creates an undercut and enables automatic locking during installation of the cover.
  • the securing element can be attached to the edge of the housing at certain points and act as a hold-down device at certain points. If the cover has elastic properties, it can give way elastically and bend upwards in an area where no securing element is provided. It is expedient for several safety elements to be arranged in such a way that any elastic bending of the cover cannot cause damage to the light source or other built-in functional elements. It is also expedient for the safety element can be released from its undercut position, which locks the cover in place. When unlocked, the cover can be removed.
  • centering means and the securing element are combined to form an integral component which can equally fulfil both the centering function of the centering means and the holding-down function of the securing element.
  • the fastening edge of the luminaire housing can be interrupted and form a gap, whereby an edge element is preferably provided which can be detachably mounted on the luminaire housing in the gap.
  • an edge element is preferably provided which can be detachably mounted on the luminaire housing in the gap.
  • the gap-filled fastening edge is supplemented by means of the edge element.
  • the edge element is designed in such a way that when mounted it appears to be an integral part of the fastening edge.
  • the size of the radiation opening is measured when the edge element is mounted. When the edge element is dismantled, the opening becomes larger because one of the holding surfaces of the edge element is no longer present.
  • the free area that forms the beam opening can be enlarged slightly to make it easier to insert the cover into the luminaire housing. This is possible using the edge element, which can be dismantled for this purpose. Once the cover is resting on the mounting edge, the edge element can be attached later.
  • the design of the luminaire with removable edge element is designed to allow this edge element to be subsequently attached to the This should be possible in particular when the luminaire is already integrated into a building surface, for example in a suspended ceiling. In this case, the outside of the luminaire housing is no longer accessible for attaching anything to it. It is therefore proposed to attach the edge element to the inside of the housing wall of the luminaire housing, even though the translucent cover is already in the luminaire housing and can already rest on the fastening edge.
  • the suggestion is to create additional space to be able to work on the relevant inner side of the housing wall to which the edge element is to be attached. It can be attached, for example, with a screw that penetrates the edge element and is screwed into a thread provided in the housing wall.
  • a cover with elastically flexible properties it may be sufficient, despite any holding-down securing element, if the cover is bent away on one side of the securing element in order to make the inside of the housing wall sufficiently accessible for a tool.
  • a deflection space for the translucent cover is expediently created within the luminaire housing in the area of the gap that interrupts the fastening edge, so that the cover can be temporarily deflected sufficiently far towards the base of the housing for assembly purposes.
  • the luminaire housing needs a sufficiently large internal deflection space for this cover.
  • the required optical distance between the secondary optics and the light source, or the primary optics is included in the dimensioning of the deflection space.
  • edge element has a T-shaped cross-section with an inner and an outer T-leg and a central fastening web, whereby the outer T-leg forms a stop for the luminaire to make contact with a building surface, whereby the inner T-leg forms a holding surface for the translucent disc-shaped cover.
  • a fastening means can expediently be assigned to the central fastening web of the edge element in order to be able to fasten it to an inner side of the luminaire housing.
  • the luminaire housing and/or the edge element are made of sheet metal.
  • the luminaire housing has at least a first pair of housing walls which are arranged opposite one another. They are preferably opposite one another in a longitudinal direction and are arranged equidistantly.
  • At least a second pair of opposing housing walls is provided.
  • a preferred embodiment of the lamp has, for example, a cuboid shape with two pairs of opposing housing walls. More preferably, one pair of the housing walls is long and one pair of short housing walls is provided. The opposing short housing walls are then also arranged equidistantly and at right angles to the long housing walls.
  • the fastening edge conveniently extends along the opposite long housing walls and along a short housing wall.
  • the remaining short housing wall forms the gap mentioned, which has no fastening edge.
  • the fastening edge is interrupted in the area of the gap. This measure facilitates the step of inserting the translucent cover into the interior of the luminaire housing. Once the cover has been inserted into the luminaire housing, it only needs to be placed on the fastening edge from the inside, or on its supporting edge surface. The edge element can then be subsequently mounted on the short housing wall with the gap.
  • the translucent cover is moved towards the base of the housing, as described above, and thus into the specially created deflection space.
  • Two holding-down securing elements are expediently provided.
  • one securing element is provided on each of the two long housing walls, for example opposite each other in the middle of the elongated housing wall.
  • the translucent cover can in turn be rigid or elastic.
  • approximately half the length of the cover can be bent upwards into the deflection space from the securing element. If half the length of the cover cannot be bent upwards sufficiently, this can be remedied, for example, by increasing the bendable length. This is easily possible by shifting the position of the two opposing securing elements from their central position.
  • any locking elements must be released or, in other words, unlocked in order to be able to pivot the cover.
  • the edge element also has a supporting surface that serves as a support for the cover.
  • the edge element is essentially an addition to the fastening edge. The cover is thus supported all the way around and without gaps.
  • the proposed luminaire can be installed on a building structure, for example a building surface, such as a wall or a ceiling.
  • a building surface such as a wall or a ceiling.
  • a suspended ceiling is considered to be a building surface within the meaning of the invention, and a prefabricated wall panel is also considered to be a building surface.
  • the luminaire can, for example, be installed on a suspended ceiling with a grid-shaped
  • the support rail system can be inserted at an angle through a ceiling installation opening formed in the grid and placed on the support rails from above.
  • the luminaire housing has at least one mechanical coupling means which is at least prepared for the mechanical assembly of a light source, namely for the purpose of interacting with a complementary mechanical coupling element which is provided on the light source.
  • a light source expediently comprises the light source, or a light generating means, and the primary optics.
  • the mechanical coupling means can advantageously be coupled to the complementary mechanical coupling element of the light source at least without tools. For safety reasons, the use of a tool can be provided for decoupling.
  • the mechanical coupling means simply comprises a recess provided in the housing base through which a support portion of the coupling means is accessible.
  • the support section expediently has a supporting contact surface, wherein the supporting contact surface is arranged on a side of the housing base facing away from the radiation opening.
  • the luminaire housing can be assigned a securing means by means of which, when a luminaire is mounted, its mounting position relative to the luminaire housing can be secured.
  • At least one of the opposite edge sections of the disc-shaped cover is assigned a head piece, which in the assembled state is located between the edge section and the associated housing wall.
  • At least one of the head pieces is mounted by means of a guide so that it can move relative to the edge section in a direction orthogonal to the edge section, in such a way that the distance between the head piece and the opposite edge section can be reduced or increased.
  • a guide so that it can move relative to the edge section in a direction orthogonal to the edge section, in such a way that the distance between the head piece and the opposite edge section can be reduced or increased.
  • particular attention is paid to the distance between such a section of the head piece relative to the edge section of the cover that is opposite the edge section in the direction mentioned, wherein in one embodiment the entire head piece is movable in the direction mentioned relative to the edge section, in another embodiment only a component of the head piece that comprises the section mentioned.
  • a first component of the head piece can be fixed or fixable to the lamp housing, wherein the cover is guided relative to the lamp housing or to the head piece and a second component of the head piece that is movable relative to the first component is arranged on the edge section of the cover and is movable together with the edge section relative to the first component.
  • the head piece can be provided by the edge element explained here, which can be detachably mounted on the lamp housing, wherein in the mounted state the edge section is mounted so as to be movable relative to the edge element along the direction mentioned and thus the edge element is mounted so as to be movable relative to the edge section in the direction mentioned.
  • the guide can, for example, be provided at least partially by the fastening edge of the lamp housing and/or at least partially, in particular completely, by the head piece.
  • the head piece or edge element can provide a support surface on which the cover can be placed with its underside rests as intended, so that the cover is at least partially guided by the head piece or edge element.
  • the head piece can be provided with parallel guide surfaces between which the disc-shaped cover is enclosed, so that a sliding guide is produced between the guide surfaces and the disc-shaped cover.
  • the radiation surface of the disc-shaped cover and its opposite radiation surface are preferably in sliding contact with the respective guide surface of the head piece in order to provide the sliding guide in this way.
  • At least one head piece can interact with a spring element which is arranged between the head piece and the edge section of the disc-shaped cover or is arranged between the head piece and the housing wall.
  • the spring element helps to hold the disc-shaped cover in a defined position on the one hand and to allow it to expand to a certain extent or change in length on the other. If two head pieces are provided, i.e. if both opposite edge sections are provided with a head piece, then both can also be provided with a spring element, whereby the disc-shaped cover can be held in a central position between the head pieces or centrally between the opposite housing walls of the luminaire housing.
  • the spring element is designed as a leaf spring element trained.
  • At least one of the head pieces advantageously has a positioning element which interacts with a complementary positioning means which is provided on the associated housing wall. In this way, the head piece is also held in a desired position relative to this housing wall, preferably centrally to the housing wall.
  • Fig. 1 shows a first embodiment of the lamp 1 according to the invention. It is shown in perspective and in this example has an elongated shape.
  • a lamp housing 2 of the lamp 1 is provided with two long housing walls 3 and 4, which are arranged parallel to one another, and with two short housing walls 5 and 6, which are also arranged parallel to one another. This results in a cubic basic shape of the lamp housing 2, or rather the lamp 1.
  • the lamp housing is made of sheet metal, which can be formed into the desired shape; if the lamp housing cannot be formed in one piece from sheet metal, sheet metal parts are connected to one another.
  • the present example is designed as a ceiling light or recessed ceiling light. It emits light downwards in a vertical main beam direction 7 (downward light source).
  • the light 1 contains space and fastening provisions for electrical functional elements, including an operating device (not shown).
  • the luminaire housing comprises a radiation opening 8 in which a disc-shaped cover 9 designed to be permeable to light is provided, which forms a secondary optic 10.
  • the light emitted by a light source is distributed by means of the secondary optic 10.
  • a light source (not shown) is expediently used as the light source, which is adapted for installation in the proposed luminaire housing 2.
  • the disc-shaped cover 9 has a Fig. 1 visible underside 11, which forms a radiation surface 12 for light transmitted through it. Furthermore, the disc-shaped cover 9 has on an upper side 13 an incident surface 14 for the incoming light, which is best seen in Fig. 3 can be seen through.
  • the disc-shaped cover 9 is detachably connected to the lamp housing 2.
  • the lamp housing 2 has a partially circumferential fastening edge 15 with a supporting edge surface 16.
  • the disc-shaped cover 9 is provided with a partially circumferential holding edge 17, which has a holding surface 18 with which the disc-shaped cover 9 at least partially rests on the supporting edge surface 16 of the fastening edge 15 of the lamp housing 2.
  • the cover 9 rests on the fastening edge 15 in a movable manner relative to the lamp housing, whereby stresses caused in particular by thermal expansion can be avoided as far as possible.
  • the edge element 38 explained in more detail below is fixed to the lamp housing.
  • the holding surface 18 is located on the underside 11 of the disc-shaped cover 9 at the level of its radiating surface 12.
  • Fig. 2 is the light of the Fig. 1 shown in an open state, ie the disk-shaped cover 9 is removed from the radiation opening 8 of the lamp housing 2, so that a view into the interior of the lamp housing 2 is provided.
  • a housing base 19 can be seen, which is opposite the radiation opening 8 of the lamp housing 2 and forms the "floor" of the lamp housing 2 or, as provided here as a ceiling light, can also be referred to as the "ceiling" of the lamp housing 2.
  • a screw terminal block 20 as an intermediate element, which can, for example, connect a current-supplying galvanic line to an operating device.
  • Fig. 2 mechanical safety elements 21 and 22 can be seen, which are enlarged in Fig. 4 shown and described using this illustration.
  • Fig. 3 the disc-shaped cover 9 of the lamp 1 according to Fig. 1 as a separate component of the proposed lamp 1.
  • the disc-shaped cover 9 is flexible and pliable. It can therefore be easily deformed, e.g. bent and/or twisted. Its flexible and pliable functionality is used for the proposed lamp 1 in order to be able to easily assemble and disassemble the cover 9.
  • the disc-shaped cover 9 is simply tilted slightly and, if necessary, slightly deformed in order to get it through the radiation opening 8 of the lamp 1 into the interior of the lamp housing 2. Inside the lamp housing 2, the cover 9 is then placed on the supporting edge surface 16 of the fastening edge 15, which in Fig. 4 The cover 9 returns to its neutral, undeformed shape, which is Fig.
  • the disc-shaped cover 9 has an elongated rectangular basic shape 23.
  • a small recess 24 or 25 is provided on each long side.
  • the recesses 24 and 25 are opposite each other. In the assembled state, they interact with a securing element 21 or 22, as shown above with reference to Fig. 2 is called.
  • Fig. 4 shows a sectional view through the luminaire housing, according to the Fig. 2 noted cutting path IV - IV.
  • the cut runs where two securing elements 21 and 22 provided for the disk-shaped cover 9 are located.
  • the position of the securing elements 21 and 22 is on the opposite long housing walls, where they are preferably arranged in the middle of the long housing wall so that they lie opposite one another.
  • the sectional view also shows the aforementioned fastening edge 15 of the lamp housing 2 and its supporting edge surface 16, on which the disk-shaped cover 9 can be placed inside the lamp housing 2.
  • the securing element 22 shows that an undercut with the cover 9 can be easily produced automatically during installation. This happens automatically when a cover inserted diagonally through the radiation opening is placed on the supporting edge surface 16 of the fastening edge 15.
  • the disk-shaped cover 9 comes into contact with the securing element 22 and locks into place with it.
  • the securing element 22 has a central tab 26 and two side tabs 27 and 28.
  • the securing element 21 is constructed identically.
  • Each securing element 21 and 22 is attached to the long housing wall by means of a fastening element, here by means of a screw 29 or 30 inserted into the housing wall from the outside, and it is spring-loaded overall, i.e. both the side tabs 27/28 and the central tab 26 protrude together spring-loaded from the housing wall 3 of the lamp housing 2.
  • a fastening element here by means of a screw 29 or 30 inserted into the housing wall from the outside
  • the securing element springs back to its neutral starting position due to stored spring energy. In the neutral starting position, the central tab 26 then protrudes over the top 13 of the disc-shaped cover 9 and locks it into the lamp housing 2 to prevent it from being lifted up inadvertently. Otherwise, built-in functional elements could be damaged, in particular a built-in light source. If the disc-shaped cover 9 were to be lifted up from the supporting edge surface 15 of the lamp housing 2, its top 13 would come into contact with the central projecting tab 26 of the securing element 22, which prevents it from being lifted up any further and thereby locks the cover.
  • the securing element 22 basically acts as a hold-down device. This is useful for use as a ceiling light because the underside of the cover could be accidentally pushed up, for example if it is to be cleaned from below. In an unfortunate case, damage could occur to the light source or other built-in functional elements.
  • the two side tabs of the securing element interact with a lateral edge section of the disc-shaped cover when mounted.
  • the lateral edge section for the securing element is suitably provided with a small recess, as can be seen from Fig. 3 mentioned.
  • the securing elements 21 and 22 have another function, namely the disk-shaped cover 9 is kept at a distance from the long housing walls 3 and 4 of the lamp housing 2, preferably centered between the long housing walls 3 and 4.
  • the distance from the housing walls provides sufficient space for any expansion of the disk-shaped cover 9, for example temperature-related expansion.
  • the side tabs 27 and 28 and the central tab 26 are designed in such a way that a flat tool can be placed on the underside 11 of the disc-shaped cover 9 in order to push the side tabs 27 and 28 back towards the housing wall 3 and to release the locking of the cover 9.
  • the central tab 26 releases the top 13 of the disc-shaped cover 9; the disc-shaped cover 9 can be tilted upwards in order to be able to dismantle it by leading it out of the radiation opening 8 at an angle.
  • the described securing element 21 or 22 also acts as a centering means or positioning means, which positions the cover 9 in its longitudinal extension relative to the lamp housing 2.
  • the disc-shaped cover 9 is in fact somewhat shorter than the inner distance between the short housing walls 5 and 6. This enables the disc-shaped cover 9 to be positioned in their longitudinal extension a certain extent.
  • the disk-shaped cover 9 should have a defined position between the short housing walls 5 and 6.
  • the centering means preferably positions the disk-shaped cover 9 so that it has an approximately equal distance to each of the short housing walls 5 and 6.
  • each of the securing elements 21 and 22 cooperates with one of the small recesses 24 and 25 of the disk-shaped cover 9, namely with two lateral surfaces of the respective recess, such as those in Fig. 3 shown surfaces 31 and 32 of the lateral recess 25.
  • the fastening edge 15 is formed from a sheet metal in one piece with the housing wall 3 or 4.
  • the sheet metal is bent inwards by 90° with a small bending radius and then also bent outwards by 180° with a small bending radius.
  • An edge overhang 33 or 34 is provided on the outside of the lamp housing 2 and at a distal end the edge overhang 33 has an edge bevel 35 with a small bending radius that is bent upwards by 90°.
  • the edge bevel 35 has a free end 36 that points upwards against the main radiation direction 7 of the lamp 1. How small the bending radius can be depends on the material of the sheet metal and its thickness.
  • the "small bending radius" preferably corresponds to the minimum possible bending radius for the corresponding sheet thickness, although a bending radius that is max. twice as large as the minimum possible bending radius is still considered a "small bending radius” in the sense of the invention.
  • the luminaire housing 2 is provided with a mechanical coupling means 19a for mounting a light source, which is adapted to be coupled with a complementary mechanical coupling element of the light source.
  • the mechanical coupling means is designed as a recess 19b in the housing base 19. At least two recesses 19b are expediently arranged in a row in the longitudinal extension of the lamp housing 2, or the housing base 19.
  • a support section 19c of the coupling means 19a is accessible through the recess 19b.
  • the support section 19c is provided with a supporting contact surface 19d, which is arranged on a side of the housing base 19 facing away from the radiation opening 8.
  • Fig. 5 shows the lamp housing 2 and the mounted disc-shaped cover 9. Only on the short housing wall 6 does the fastening edge 15 still have a gap 37 that must be closed. In order to close the gap 37, a Fig. 6 shown separate edge element 38 is provided.
  • the edge element 38 has a T-shaped cross-section with T-legs and a central fastening web 39.
  • the fastening web 39 is provided with three through-openings 40, 41 and 42 for one fastening means each, for example for one sheet metal screw each.
  • the edge element 38 can be fastened to the lamp housing 2 in a final assembly step. How this is achieved is shown in Fig. 7 explained.
  • Fig. 7 shows a partial sectional view through the luminaire housing 2.
  • the short housing walls 6 are shown in cross section.
  • the separate edge element 38 according to Fig. 6 is attached to its intended position on the inside of the short housing wall 6 and can also be seen in cross-section.
  • the disc-shaped cover 9 is shown as a dashed line. The cover 9 is moved upwards away from the radiation opening 8 in the direction of of the housing base 19. Space in the form of a deflection space 43 is provided in the luminaire housing 2 in order to be able to move the cover 9 upwards sufficiently far so that the sheet metal screws (not shown) can be screwed into the inside of the short housing walls 6.
  • the edge element 38 complements the fastening edge 15 in the area of the gap 37.
  • the edge element 38 has a supporting edge surface 38a on an inner T-leg, which supports the disk-shaped cover 9 when assembled. Furthermore, the outer T-leg of the edge element 38 forms an edge projection 38b, which corresponds in shape and size to the edge projection 33 on the housing wall 3 and is also provided with an edge edge 38c, which in the assembled state corresponds in arrangement as well as in shape and size to the edge edge 35 of the housing wall 3.
  • Fig. 8 shows a further embodiment of the lamp 1 according to the invention.
  • the lamp of the Fig. 8 in turn comprises an elongated lamp housing 2, which has a pair of long housing walls 3 and 4 and a pair of short housing walls 5 and 6, which are each parallel to one another. Again, this results in a cubic basic shape of the lamp housing 2, or rather of the lamp 1.
  • a variant of a disk-shaped cover 44 is provided as a secondary optic 45 and closes a radiation opening 8 of the lamp housing 2.
  • the disk-shaped cover 44 has an elongated rectangular shape with two opposite long lateral edge sections 46 and 47 and with two opposite short lateral edge sections 48 and 49.
  • each head piece 50 or 51 is first attached to the disc-shaped cover 44, ie before it is installed in the luminaire housing 2.
  • the luminaire 1 is shown with a built-in disc-shaped cover 44 and in a position in which the main beam direction 7 is directed vertically downwards.
  • the head piece 50 is shown as a dashed line. It is located inside the luminaire housing 2 on the inside of the short housing wall 5.
  • the headpiece 50 of the Fig. 8 is in the Figures 9 and 10 shown enlarged and each shown with a section of a disc-shaped cover 44.
  • the head piece 50 forms a frame for the short edge section 48 of the disc-shaped cover 44.
  • the head piece 50 is arranged between the edge section 48 and the short housing wall.
  • the head piece 50 forms a guide 52 for the disc-shaped cover 44.
  • the guide 52 enables a relative movement between the head piece 50 and the disc-shaped cover 44.
  • the disc-shaped cover 44 is thus mounted so as to be movable to a certain extent.
  • the guide 52 is designed such that the head piece 50 is movable in a direction orthogonal to the short edge section 48, in such a way that the distance between the head piece 50 and the opposite short edge section 49 can be reduced or increased. If the disc-shaped cover 44 experiences a change in length in the direction of its longitudinal extension, which can occur, for example, due to temperature changes, then this change in length can be compensated by means of the two head pieces 50 and 51.
  • the Headpiece 50 is provided with parallel guide surfaces 53 and 54, between which the disc-shaped cover 44 is enclosed.
  • a sliding guide is created, with a simple radiation surface 55 of the disc-shaped cover 44 being in sliding contact with the guide surface 53 and a radiation surface 56 of the disc-shaped cover 44 being in sliding contact with the guide surface 54 of the headpiece 50.
  • the disc-shaped cover 44 rests on the guide surface 54, which is therefore of essential importance.
  • a spring element 57 is also arranged, which is supported at the bottom by the Figures 11 and 12 is explained.
  • a positioning element 58 provided on the head piece 50 can be seen, which interacts with a complementary positioning means 59, which is attached to the inside of the short housing wall 5 of the lamp housing 2.
  • the positioning element 58 is provided as a tab 60 formed on the head piece 50, which has a free end 61 and two parallel side edges 62 and 63.
  • the side edges 62 and 63 are aligned parallel to the vertical main radiation direction 7 of the lamp 1 and face outwards.
  • the main radiation direction is orthogonal to a housing base 19 of the lamp housing 2.
  • the complementary positioning means 59 mounted in the luminaire housing 2 has a pocket-shaped recess 64.
  • the recess 64 is provided with two parallel inner edges 65 and 66.
  • the outward-facing side edges 62 and 63 of the positioning element 58 fit with some play between the inner edges 65 and 66 of the positioning means 59, which is fixed to the lamp housing 2.
  • the head piece 50 can therefore move with a certain amount of play along the short housing wall 5.
  • the play is dimensioned such that opposite end faces 50a and 50b of the head piece 50 cannot reach as far as the long housing walls 3 and 4.
  • Fig. 8 a corner 67 of the disk-shaped cover 44, wherein a piece of the short edge section 48 and a piece of the long edge section 47 can be seen at this corner 67.
  • the disk-shaped cover 44 is constructed in a sandwich design in this example and forms a sandwich cover 68.
  • the sandwich cover 68 comprises a radiation layer 69 and a radiation layer 70.
  • the representation of the headpiece 50 in Fig. 10 shows the sandwich cover 68 again.
  • the sandwich cover 68 is provided with two elongated holes 71 and 72 with which the head piece interacts.
  • the head piece 50 is provided with a guide element 73 that interacts with the elongated hole 71 and with a guide element 74 that interacts with the elongated hole 72.
  • the guide elements 73 and 74 generally serve to attach the head piece to the disc-shaped cover 44, which is designed here as a sandwich cover 68, in a captive manner.
  • the head pieces should be captive when the cover is not yet installed in the luminaire housing 2; the head pieces should then not be lost from the edge section.
  • each Elongated holes 71 and 72 have a certain range of movement in their longitudinal extension for the desired relative mobility that should be possible between the cover (44, 68) and the head piece 50.
  • the elongated holes 71 and 72 have parallel inner surfaces that serve this guide.
  • the inner surfaces together with the guide elements 73 and 74 prevent the head piece 50 from shifting transversely relative to the short edge section 48.
  • the head piece 50 is designed with an outer element 75 and an inner element 76, which are connected via bending webs 77. Both the outer element and the inner element have a substantially L-shaped cross section.
  • Fig. 10 the shape of the head piece 50 is indicated in a state before the guide elements 73 and 74 have been brought into engagement with the elongated holes 71 and 72 of the sandwich cover 68.
  • the bending webs 77 are still straight and the dashed inner element 76 is not yet aligned parallel to the outer element.
  • the inner element is bent by 90° in the direction of the arrow 78.
  • the bending webs fulfill their purpose and facilitate the bending process.
  • the dashed section of the inner element 76 shows the guide element 73, which is inserted into the elongated hole 71 by means of the bending process.
  • the opposite head piece 51 is connected in the same way to the short edge section 49 of the disk-shaped cover 44.
  • This assembly can then be installed in the luminaire housing 2 For this purpose, they are introduced in an inclined spatial position through the radiation opening 8 into the interior of the luminaire housing 2 and then aligned parallel to the plane of the radiation opening 8.
  • a fastening edge 15 is provided on the long housing walls 3 and 4, which in principle corresponds to that in Fig. 4
  • the fastening edge comprises a supporting edge surface 16 on which the assembly can be placed.
  • Fig. 11 as a further detail, namely a spring element 79 and the two elongated holes 71 and 72 of the disc-shaped cover 44 can be seen.
  • the spring element 79 is connected in the assembled state between the head piece 50 and the short edge section 48 of the disc-shaped cover 44, as Fig. 12 shows.
  • the spring element 79 is designed in the present example as a leaf spring element 80 and in the assembled state extends between the guide surfaces 53 and 54 of the head piece 50.
  • the leaf spring element 80 has a middle region 81 and two end regions 82 and 83. In the assembled state, the middle region 81 rests on the head piece 50, or rather on the outer element 75, while the two end regions 82 and 83 act against the edge section 48 of the sandwich cover 68.
  • the middle region 81 of the leaf spring element 80 is provided with a U-shaped recess 84.
  • a pin element 85 is arranged on the head piece 50, which fits together with the U-shaped recess 84 and fixes the leaf spring element 80 relative to the head piece 50.
  • Fig. 12 shows a side view of the front side of the head piece 50.
  • the disc-shaped cover 44 is omitted for simplicity.
  • the head piece 50 has a substantially L-shaped cross section which includes the outer element 75 and the inner element 76.
  • the outer element 75 also has the positioning element 60, which serves to define the position of the head piece 50 relative to a housing wall 5 of the lamp housing 2.
  • One of the two guide elements 73 can be seen on the L-shaped inner element 76, which extends into the slot in the cover 44 in the bent final state. Because the cover 44 is omitted, Fig. 12 the leaf spring element 80 in a relaxed neutral shape and shows its arrangement between the guide surfaces 53 and 54 of the head piece 50.
  • a truncated cone-shaped region 86 is also shown, which is provided on the outer element 75 of the head piece 50.
  • the truncated cone-shaped region 86 is simply formed on the outer element 75, preferably embossed.
  • the inner element 76 is in contact with a free end of the truncated cone-shaped region 86.
  • a screw can be provided to firmly connect the inner element 76 to the truncated cone-shaped region 86 of the outer element 75, which contributes to the stability of the head piece and prevents it from bending.
  • the head piece 50 has two truncated cone-shaped regions, namely the truncated cone-shaped region 86 and 87, the position of which in Fig. 9 can be seen on the outer element 75.
  • Fig. 9 on the outer element 75, where the mentioned pin element 85 is located which serves to secure the position of the leaf spring element 80.
  • Fig. 13 is a perspective view of an alternative head piece 88, which belongs to a further embodiment of the lamp 1 according to the invention.
  • this head piece 88 also has a substantially L-shaped cross section. It comprises an outer element 89 and an inner element 90.
  • headpiece 88 does not yet have its final shape, it is still missing a 90° bending step to bring the inner element 90 into a parallel L-shape relative to the outer element 89.
  • the inner element 90 is connected to the outer element 89 by means of bending webs 91, wherein the bending webs 91 in Fig. 13 are not yet bent, but still straight.
  • two truncated cone-shaped areas 92 and 93 are embossed on the outer element 89 and the inner element 90 is provided with two through holes 94 and 95 which, in the final bent state, are concentric to the respective conical area 92 and 93 respectively.
  • the inner element 90 can then be fastened to the conical area with one sheet metal screw each.
  • two guide elements 96 and 97 are provided on the inner element 90 in order to hold a disk-shaped cover (not shown) in position.
  • the guide elements 96 and 97 do not interact with elongated holes in the disk-shaped cover. Instead, the guide elements 96 and 97 interact with the long side edge sections on the outside of the cover. The manufacture of the disk-shaped cover is simplified by omitting the elongated holes.
  • the headpiece of the Fig. 13 furthermore has a positioning element 98 which is arranged on the outer element 89 and serves to position it relative to an adjacent housing wall of the lamp housing 2.
  • the lamp housing 2 is therefore assigned a positioning means (not shown) which has a recess and interacts with the positioning element 98 of the head piece 88.
  • the positioning element 98 has the same structure and the same function as the positioning element of the Figures 9 and 10 .
  • the description of the positioning element of the Figures 9 and 10 is referred to.
  • two head pieces are attached to the disc-shaped cover so that an assembly is formed.
  • the head pieces are attached to short edge sections of the cover, which are located on opposite sides of the cover.
  • the head piece 88 has two end faces 99 and 100, each of which has obliquely cut corners. Material has been removed from the end faces 99 and 100, the purpose of which is to facilitate and simplify assembly. The material removal affects both the outer element and the inner element. In the finished state, when the inner element is bent by 90° in the direction of the outer element, the obliquely cut corners of the inner element and outer element form parallel beveled edges next to one another.
  • the disc-shaped cover assembly For assembly purposes, the disc-shaped cover assembly must be inserted at an angle through a radiation opening 8 in the luminaire housing 2 into the interior of the luminaire housing 2. Due to the angled corners on the front sides 99 and 100 of the head piece(s), a smaller degree of inclination is sufficient to get the assembly into the luminaire housing 2.
  • the space that must be available inside the luminaire housing 2 depends, among other things, on the degree of inclination required to get the assembly through the radiation opening. If a smaller degree of inclination is sufficient, this means that less space is required inside the luminaire housing.
  • the luminaire housing can then be made flatter and the luminaire as a whole can be manufactured more cost-effectively using less material.
  • a pin element 101 which serves to secure the position of a leaf spring element 102, as in Fig. 14
  • the leaf spring element 102 is identical to the leaf spring element 80 of the Figures 11 and 12 .
  • Fig. 14 shows a partial perspective view of another embodiment of the lamp 1 according to the invention, wherein the head piece according to Fig. 13 is used, whereby Fig. 14 a view from below into the luminaire housing 2. In this position it can be used as a ceiling luminaire because the main beam direction for light is directed downwards.
  • a short housing wall 5 can be seen with a head piece 88 arranged on the inside of the housing wall 5 according to Fig. 13 .
  • the disc-shaped cover is omitted.
  • the head piece 88 still has the shape as in Fig. 13 , ie a final 90° bending step of the inner element 90 in the direction of arrow F to the outer element 89, has not yet been completed.
  • cover and head pieces 88 in the present example is Fig. 14 after being introduced into the interior of the luminaire housing 2, it is aligned parallel to the plane of the radiation opening 8, in order to then place it on a supporting edge surface of a fastening edge.
  • Each long housing wall 3 and 4 is assigned a supporting edge surface 16.
  • Fig. 14 shows the position of the leaf spring element 102, which is defined by the pin element 101.
  • the pin element 101 determines the position of the leaf spring element 102 relative to the outer element 89 of the head piece 88. Because the last bending step for the head piece has not yet been completed, the leaf spring element 102 is not yet enclosed between guide surfaces. However, as soon as the last bending step is carried out and the disc-shaped cover is enclosed, the guide surfaces are parallel to each other, as in Fig. 12 , and allow a relative movement between the head piece 88 and the disc-shaped cover. In addition, the leaf spring element 102 is then guided between the guide surfaces, as described above with regard to the Figures 11 and 12 The description of the tour based on the Figures 11 and 12 is referred to here.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
EP24165598.4A 2023-04-04 2024-03-22 Luminaire Pending EP4446647A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023108553 2023-04-04

Publications (1)

Publication Number Publication Date
EP4446647A1 true EP4446647A1 (fr) 2024-10-16

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ID=91248787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24165598.4A Pending EP4446647A1 (fr) 2023-04-04 2024-03-22 Luminaire

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EP (1) EP4446647A1 (fr)
DE (1) DE102024108332A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329268A (en) * 1941-11-12 1943-09-14 Heath Wilfrid Paul Light fixture
WO2005092666A1 (fr) * 2004-03-11 2005-10-06 Energy Wise Lighting, Inc. Appareil d'eclairage pour environnements a basse temperature
US20100277929A1 (en) * 2009-05-04 2010-11-04 Ip Holding Llc Horticulture light fixture with glass retention rails
WO2015102182A1 (fr) * 2014-01-02 2015-07-09 ㈜유양디앤유 Dispositif d'éclairage à del
DE202018100348U1 (de) * 2018-01-23 2019-04-24 Zumtobel Lighting Gmbh Leuchte mit Federelementen zur Halterung einer Abdeckung
DE102021113431A1 (de) 2021-05-25 2022-12-01 Trilux Gmbh & Co. Kg Optisches System für eine Leuchte und Leuchte mit einem solchen System
WO2023021316A1 (fr) * 2021-08-16 2023-02-23 Stepan Engineering Gmbh Appareil d'éclairage en carton

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329268A (en) * 1941-11-12 1943-09-14 Heath Wilfrid Paul Light fixture
WO2005092666A1 (fr) * 2004-03-11 2005-10-06 Energy Wise Lighting, Inc. Appareil d'eclairage pour environnements a basse temperature
US20100277929A1 (en) * 2009-05-04 2010-11-04 Ip Holding Llc Horticulture light fixture with glass retention rails
WO2015102182A1 (fr) * 2014-01-02 2015-07-09 ㈜유양디앤유 Dispositif d'éclairage à del
DE202018100348U1 (de) * 2018-01-23 2019-04-24 Zumtobel Lighting Gmbh Leuchte mit Federelementen zur Halterung einer Abdeckung
DE102021113431A1 (de) 2021-05-25 2022-12-01 Trilux Gmbh & Co. Kg Optisches System für eine Leuchte und Leuchte mit einem solchen System
WO2023021316A1 (fr) * 2021-08-16 2023-02-23 Stepan Engineering Gmbh Appareil d'éclairage en carton

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