Wall light with asymmetrical light emission

Abstract

The invention relates to a wall lamp (1) comprising a housing having a mounting side extending in the vertical direction (Z) and in the longitudinal direction (X), wherein a mounting section of the mounting side of the housing is formed by a mounting part (3) of the housing, and the housing has a horizontally extending light emission side, which forms a bottom or top of the housing and on which a light emission opening formed by a lamp part (2) of the housing is provided, wherein light sources are arranged in the housing, each of which is associated with an optical element (6, 7) arranged between the respective light source and a cover (4, 8), wherein a light source arrangement is formed by the light sources and optical element (6, 7) which directs the light emitted by the light sources to at least a predominant extent within an angular range,which is limited by a lower limiting angle of at least 0° relative to a vertical plane and an upper limiting angle (603) of at most 90° relative to the vertical plane (Z), shines onto at least one area of ​​the cover (4, 8), wherein the cover (4, 8) is designed to radiate the light radiated by the light sources onto its area into an environment, wherein the cover has a light-guiding contour.

Description

[0001] The invention relates to a wall light according to the preamble of claim 1 and to a set comprising several different wall lights.

[0002] In the prior art, wall lights are known that have a mounting surface for attaching them to a wall extending vertically and longitudinally. Wall lights are typically designed for mounting on a flat wall whose plane extends vertically and longitudinally. The vertical direction usually corresponds to the direction of the normal force acting on the Earth. Such a wall light is typically designed to emit light from its underside and / or top. Light emitted from the underside is used for direct illumination, while light emitted from the top is used for indirect illumination. The light emitted from the top is usually directed towards the wall to illuminate it, thus providing indirect illumination via the wall.The light emitted from the underside is usually directed away from the wall.

[0003] Common wall lights are typically designed to emit light across a beam angle that defines the light distribution characteristic. This angle is small relative to a vertical plane, resulting in light being emitted primarily with a vertical component and only a small horizontal component. This is intended to prevent glare for people near the wall light when using direct lighting, and to provide the most effective indirect lighting possible. The light distribution characteristic of a wall light is usually asymmetrical: for direct lighting, the light is emitted asymmetrically away from the wall or mounting surface, and for indirect lighting, it is emitted asymmetrically towards the wall or mounting surface.Providing a desired beam pattern from a wall light is typically achieved by using light sources and associated optical elements that, together with the light sources, form a light source assembly through which the light is emitted with the desired beam pattern. Often, such a light source assembly is housed within the wall light's casing, which has a light emission opening covered by a diffuser. The light emitted by the light source assembly propagates through this opening and is then radiated from the diffuser into the surrounding area. With such a wall light, it is generally possible to achieve the desired beam pattern.However, the beam characteristics provided by wall luminaires known in the prior art have proven problematic: these characteristics are poorly suited for some applications where the wall luminaire is also intended to provide at least some degree of lateral illumination. In these cases, while the wall luminaire still emits a majority of its light glare-free with a significant vertical component, a certain proportion exhibits a larger horizontal component. Such applications exist, for example, where wall luminaires are primarily designed to illuminate a floor area, but where people in the vicinity of the wall luminaire desire a greater sense of security through lateral illumination.In wall luminaires known in the prior art, this problem is addressed through the complex design of optical elements and the provision of a wide variety of optical elements for different applications. However, a beam pattern adapted to the described requirements cannot be adequately achieved in this way without incurring significant manufacturing costs.

[0004] The present invention is based on the objective of providing a wall light or a set with different wall lights, with which at least one problem or disadvantage known in the prior art of generic wall lights or sets is at least partially eliminated.

[0005] As a solution to the problem underlying the present invention, the invention proposes a wall light with the features according to claim 1. The wall light according to the invention has a housing that has a mounting side extending vertically and longitudinally, by which it can be attached to a wall extending vertically and longitudinally. Preferably, the housing can be attached to a flat wall extending vertically and longitudinally by its mounting side. At least one mounting section of the mounting side of the housing, by which the housing can be attached to the wall in abutting position, is formed by a mounting part of the housing. The housing further has a horizontally extending light emission side, which forms a bottom or a top of the housing and on which a light emission opening formed by a luminaire part of the housing is provided.In one embodiment, the luminaire component and the mounting part can be integrated into a single component and thus formed as a single, integral unit. In a particularly advantageous embodiment, the mounting part and the luminaire component are designed as two separate components of the housing. In an operating state of the housing, the luminaire component is attached to the mounting part. The luminaire component can be attached to a wall using the mounting part. For example, the mounting part can first be attached to the wall, and then the luminaire component can be attached to the mounting part. The mounting part forms the mounting section of the housing and can be attached to the wall together with the mounting section.Within the housing, preferably in an interior space formed by the luminaire component, light sources designed to emit light are arranged. Each light source is associated with an optical element, which is positioned between the respective light source and a cover that closes the light emission aperture. Exactly one optical element is associated with each light source. In one embodiment, each light source is associated with a different optical element; in another embodiment, at least one optical element is associated with several light sources, such that each light source illuminates a section of the optical element assigned to it with the light it emits. It should be noted that an optical element can be designed, for example, as a reflector or as a lens, with the lens configuration proving particularly advantageous.Preferably, an optical element or further optical element described herein has a light-entry surface and a light-emission surface, wherein the optical element is arranged relative to its associated light source such that light emitted by the light source enters the optical element through the light-entry surface, propagates within it, and then exits the optical element through the light-emission surface after propagation. Typically, refraction of the light occurs both upon entering the optical element through the light-entry surface and upon exiting the light-emission surface. The light sources and their respective associated optical elements...The optical elements assigned to each light source form a light source arrangement that directs the light emitted by the light sources, for at least the majority of its emission, onto at least one area of ​​the cover within an angular range limited by a lower limiting angle of at least 0° relative to a vertical plane and by an upper limiting angle of max. 90° relative to a vertical plane. The light emitted by the light sources of the light source arrangement is thus directed by the at least one optical element in such a way that the light source arrangement as a whole illuminates at least the aforementioned area of ​​the cover, in particular the entire cover, exclusively with light emitted by the light source arrangement within the aforementioned angular range.The upper and lower limit angles of the angular range are defined by specifying a horizontal plane from which the light source arrangement emits light, wherein this horizontal plane and the vertical plane form a line of intersection, wherein the emission angle of a light ray emitted by the light source arrangement, and thus also the upper and lower limit angles of the angular range, is determined by specifying an emission angle of 0° by the direction of a light ray that, starting from the horizontal plane, travels along the vertical direction in a direction away from the horizontal plane, i.e.upwards or downwards, and parallel to the vertical plane, wherein the emission angle of a light ray extending from the horizontal plane at an angle to the vertical plane is determined by the angle that a line defining this light ray forms with the vertical plane along a defined direction of rotation about the line of intersection between the horizontal and vertical planes, wherein, to determine the angle, the line defining the light ray is arranged parallel to the path of the light ray and passes through said line of intersection. An angular range limited by the limiting angles of 0° and 90° is thus restricted to a spatial quadrant located on one side of the vertical plane. Preferably, the upper limiting angle is max. 80°, more preferably max. 75°, and more preferably max. 70°.Preferably, the light source arrangement illuminates at least 90%, and in particular at least 95%, of the aforementioned area of ​​the cover with light that falls within the aforementioned angular range. Preferably, the light source arrangement illuminates at least 80%, and in particular at least 90%, and in particular at least 95%, of the entire cover with light that falls within the aforementioned angular range. The cover is designed to radiate the light emitted by the light sources onto its area and propagated through it into the surroundings of the wall luminaire. The light emitted by the light source arrangement onto the cover in an operating state of the wall luminaire thus passes through the cover and is radiated from the cover into the surroundings of the wall luminaire.

[0006] In one embodiment, the cover has a light-guiding contour by which the light emitted onto the area of ​​the cover within the angular range is guided such that the cover emits at least a portion of the light emitted onto the area within the angular range into the vicinity of the wall luminaire at an angle greater than the upper limit angle relative to the vertical plane. In another embodiment, the wall luminaire has a further light source arrangement with further light sources, each of which is associated with a further optical element. This optical element is arranged between the respective further light source and a further cover that closes a further light emission opening, which is provided on a further light emission side facing vertically away from the light emission side.For example, the light emission opening can be located on the underside and the additional light emission opening on the top, thus providing the light emission side on the top and the additional light emission side on the underside; alternatively, the light emission opening can be located on the top and the additional light emission opening on the underside.The further light source arrangement is designed to shine the light emitted by the further light sources onto the further cover, and the further cover is designed to radiate the light shone onto it by the further light source arrangement and propagated through it into the surroundings of the wall lamp, wherein the further light source arrangement is particularly preferably arranged on a mounting surface tilted to the vertical plane, wherein the mounting surface is particularly preferably oriented at an angle of less than 90° to the vertical plane, in particular at an angle between 30° and 80°, in particular at an angle between 40° and 70° to the vertical plane.

[0007] The invention offers the particular advantage that, while the wall light can still fulfill a significant lighting function by emitting a substantial portion of light with a considerable vertical component, as is customary in the prior art, lateral illumination can simultaneously be achieved through a particularly simple, cost-effective, and precisely adjustable measure. In one embodiment, where light is initially emitted from the light source arrangement onto the area of ​​the cover within the aforementioned angular range, and this light then undergoes further deflection, the interaction of the already asymmetrically emitting light source arrangement and the downstream light-directing cover ensures a graduated realization of an asymmetrical emission characteristic for the wall light.The invention is based on the understanding that this allows the optical elements used in the light source arrangement to be designed simply, and that the cover enables targeted control of at least a portion, in particular a maximum of 20%, and in particular more than 2%, of the light emitted by the light source arrangement. A particularly advantageous aspect for the cost-effective realization of a wall luminaire is that optical elements designed to emit light within the specified angular range can always be used for different lighting tasks in a single wall luminaire; for example, the same optical elements can be used, while the cover allows for fine-tuning of the beam pattern of the wall luminaire.In an embodiment where the described additional light source arrangement and additional light emission opening are provided, targeted lateral illumination can be achieved with simple and cost-effective means by means of the additional light source arrangement. It has proven particularly advantageous to provide a light source arrangement that, as described, emits at least a predominant portion of its light within the described angular range onto at least one area of ​​the cover, and especially onto the cover as a whole. This light source arrangement is designed to emit light downwards, and thus the light emission opening is located on the underside of the wall light. In contrast, the additional light source arrangement is designed to emit light upwards, and the mounting surface on which the light source arrangement is arranged is tilted relative to the vertical plane.This measure makes it possible to achieve brightening indirect lighting by illuminating a wall in a particularly simple way.

[0008] In one embodiment, the light-guiding contour is provided only within a horizontal section of the cover, which extends over less than 50%, in particular less than 30%, and in particular less than 20%, of the total horizontal extent of the cover. In another embodiment, the aforementioned area of ​​the cover and the light-guiding contour extend exclusively within the same horizontal section of the cover, which extends over less than 50%, in particular less than 30%, and in particular less than 20%, of the total horizontal extent of the cover. In another embodiment, the horizontal section forms an end of the cover pointing away from the mounting side along a transverse direction perpendicular to the vertical and longitudinal directions, and extends from this end along the transverse direction towards the mounting side. By defining the light-guiding contour, orIf the aforementioned area of ​​the cover is only provided within a limited horizontal section of the cover, the cover can be specifically designed to deflect only a small proportion of the light emitted from the light source arrangement onto the cover, such that the light is emitted at an angle or beam angle greater than the aforementioned upper limit angle. Generally, the cover is designed and arranged relative to the light source arrangement such that at least 3%, in particular at least 5%, in particular at least 10%, and preferably less than 30%, in particular less than 20%, in particular less than 15% of the light emitted from the light sources onto the cover in the specified angular range is deflected by the light-guiding contour.Preferably, the horizontal section within which the light-guiding contour extends exclusively is designed with a correspondingly relatively small horizontal extent compared to the total horizontal extent of the cover. In one embodiment, the cover is designed and arranged relative to the light source arrangement such that at least 3%, in particular at least 5%, in particular at least 10%, and preferably less than 30%, in particular less than 20%, and in particular less than 15% of the total light emitted by the light sources onto the cover is guided by the light-guiding contour. Preferably, the proportion can be at least 3% and less than 30%, in particular at least 5% and less than 20%, and in particular at least 5% and less than 15%, whereby this can apply to the percentage ranges described above.In one embodiment, the light-guiding contour extends exclusively within the aforementioned horizontal section of the cover, wherein the horizontal section forms at least one longitudinal end of the cover. Preferably, the area illuminated by the light source arrangement also forms a longitudinal end of the cover. In one embodiment, the light-guiding contour extends over the entire aforementioned horizontal section of the cover; in another embodiment, it extends only over a portion of the horizontal section, in particular over at least 50%, and in particular over at least 70% of the horizontal section of the cover. In one embodiment, the aforementioned area is illuminated by the light source arrangement over its entire horizontal extent when the wall luminaire is in operation; in another embodiment, over at least 50%, and in particular over at least 70%, and in particular over at least 90% of its horizontal extent.In one embodiment, the horizontal section extends over less than 50%, particularly less than 30%, and particularly less than 20% of a side of the cover facing the mounting side. It is particularly preferred that the horizontal section, and thus the light-guiding contour, is spaced transversely from the side of the cover facing the mounting side. By providing the light-guiding contour within a horizontal section of the cover that forms an end of the cover extending away from the mounting side along the transverse direction, the light-guiding contour can, in a wall-mounted operating state of the wall luminaire, generate illumination precisely on the side of the wall luminaire facing away from the wall. Preferably, the light-guiding contour extends to the aforementioned end of the cover extending away from the mounting side along the transverse direction.Accordingly, if the horizontal section of the light-guiding contour extends to at least one longitudinal end of the cover, and in particular to both longitudinal ends of the cover, it can provide particularly advantageous lateral illumination on the front and back, i.e., on the two longitudinal ends of the wall luminaire that are furthest apart in relation to the longitudinal direction. Here, too, it is particularly advantageous if the light-guiding contour extends to the respective longitudinal end of the cover.

[0009] In one embodiment, the light source arrangement is designed as an inherently asymmetric light source arrangement, the at least one of whose optical elements is configured to asymmetrically direct the light emitted by its associated light source. The light distribution curve (also known to those skilled in the art as LDC) with which the light source arrangement emits light and thus also illuminates the cover, is therefore an asymmetric light distribution. Typically, each light source has a main emission direction. LEDs are generally preferred as light sources. It is generally provided that the light sources have a symmetrical emission characteristic around their main emission direction and thus ensure light emission with a symmetrical light distribution curve.In the described preferred embodiment, the optical element associated with the respective light source is designed to distribute the light emitted by the light source asymmetrically and thus influence or modify the light distribution curve provided by the light source. Because the light source arrangement is designed as an inherently asymmetric light source arrangement, it can exhibit the asymmetric emission characteristic described above even when it is mounted on a horizontal mounting surface perpendicular to the vertical direction.

[0010] In one embodiment, the additional light source arrangement is designed as an inherently symmetrical light source arrangement, the at least one of which is configured to symmetrically direct the light emitted by its associated light source. The additional light source arrangement can thus be advantageously designed to emit light with a symmetrical light distribution curve. This allows for the targeted provision of a symmetrical lighting effect. However, the additional light source arrangement can be positioned on a mounting surface oriented at an angle of less than 90° to the vertical plane, and thus obliquely to both the vertical and horizontal directions. Due to its positioning on the oblique mounting surface, the additional light source arrangement illuminates the further cover of the wall luminaire asymmetrically with respect to the vertical plane.In one embodiment, the at least one optical element and the at least one further optical element each have a light-entry surface and a light-emission surface, arranged relative to their respective associated light source such that light emitted by the light source enters the respective optical element through the light-entry surface, propagates within it, and exits the optical element through the light-emission surface. Preferably, the at least one further optical element has a total internal reflection surface at which at least a portion, and in particular a predominant portion, of the light propagating within it is totally reflected before reaching its light-emission surface.Preferably, in the second optical element, a larger portion of the light propagating within it undergoes total internal reflection before reaching the light-emitting surface than in the first optical element, and / or the total internal reflection surface of the second optical element extends over a larger angle around a principal emission direction of the associated light source than the total internal reflection surface of the first optical element. It is generally known to those skilled in the art that providing a total internal reflection surface in an optical element ensures particularly precise light control by the optical element. By designing the second optical element, compared to the first, such that a larger proportion of the light from the associated light source undergoes total internal reflection within it, the second optical element's light-guiding properties can be specifically adapted to the desired light distribution characteristics of the second optical element arrangement.Because the total internal reflection area of ​​the additional optical element extends over a larger angle around a main emission direction of the associated light source than the total internal reflection area of ​​the optical element of the other optical element, the optical element can be designed with a more asymmetrical light-guiding characteristic compared to the other optical element. The invention is based on the particular insight that it is especially advantageous to provide light source arrangements with differently designed optical elements on two vertically opposite light emission sides, as explained above, since this allows for the targeted realization of advantageous emission characteristics of the wall luminaire on the top and bottom. In explaining the optical elements and their total internal reflection properties, the following applies:The described properties of the optical elements that these exhibit in the wall lamp with reference to their respective assigned light source are compared with each other, taking into account their total internal reflection surfaces and their respective assigned light source.

[0011] In one embodiment, the light-guiding contour is formed at least partially by a variation in the vertical thickness of the cover, wherein the thickness variation is located, in particular, within the area illuminated by the light source arrangement. The vertical thickness of the cover corresponds to the extent of the cover along the vertical direction at its respective horizontal point of extent. The described light-guiding property can be provided in a particularly simple manner by varying the thickness of the cover. Preferably, the outer surface of the cover within the area where it exhibits the thickness variation is smooth, which can particularly effectively prevent the accumulation of dirt. Particularly preferably, the thickness variation is formed, at least partially, by a step. Preferably, the step is located on a surface facing the interior of the housing or the interior of the luminaire component.The cover is provided on the side facing the light part.

[0012] In one embodiment, the cover has a downward-facing contour along the vertical direction towards the mounting side over a vertical section on its outer surface extending transversely away from the mounting side. This contour at least partially forms the light-guiding contour. Preferably, the downward-facing contour towards the mounting side is rounded. The vertical section refers to a specific segment along the vertical direction. Because the outer surface of the cover is directed downwards towards the mounting side along its length, the outer surface has a horizontal and a vertical directional component within the vertical section. Due to the downward-facing contour of the outer surface towards the mounting side, the outer surface increasingly approaches the mounting side along the transverse direction as it extends downwards within the vertical section.The invention is based on the particular insight that this design allows for a particularly advantageous deflection of the light emitted from the cover into the surroundings away from the vertical plane, i.e., by increasing the angle to the vertical plane, through refraction. Particularly preferably, the cover has an inner side opposite the outer side, which runs along the outer side within the vertical section. The inner side of the cover has a downward-facing vertical direction throughout the entire vertical section, which is directed less towards the mounting side than the outer side and thus approaches the mounting side less closely than the outer side. Therefore, the cover has a wall thickness between the inner and outer sides that varies within the vertical section. This described variation in wall thickness...The different contours along the vertical direction from top to bottom within the vertical section of the inner and outer surfaces, as described above, allow for particularly advantageous light guidance of the light emitted onto the area by refraction of the light on the inside of the cover on the one hand and by refraction of the light on the outside of the cover on the other. This allows the light to be deflected at a larger angle to the vertical plane, which is particularly advantageous. Preferably, the outer surface within the vertical section has a rounded contour, whereas the inner surface has a less rounded or straight contour within the vertical section.

[0013] In one embodiment, the cover is shaped like a trough and has a trough base and a side wall arranged laterally on the trough base, in particular a side wall that surrounds the trough base, especially a fully enclosed side wall. Preferably, the light-directing contour is formed at least partially, and in particular at least predominantly, by the side wall. Particularly preferably, the light-directing contour is formed at least partially by a step formed by the side wall. Particularly preferably, the light-directing contour is formed entirely by the side wall. In one embodiment, the side wall, with at least partial formation of the light-directing contour, forms an end of the cover with its outer surface and, over a section of its horizontal course along the trough base, has a downward-directed course towards the opposite end within a vertical section.Along its horizontal course on the tub floor, the outer surface of the cover thus always forms an end point in a specific horizontal direction within the vertical section, whereby this direction can change as it runs along or around the tub floor. For example, with a cover that has a rectangular cross-section, the direction can be the same along each straight side of the rectangular shape and only change at the transition from one side of the rectangle to the adjacent side, whereas with a cover that has a circular cross-section, the direction changes continuously along its course on the tub floor, particularly as it wraps around the tub floor. The side wall has a thickness that tapers from top to bottom along its course within the vertical section.The sidewall thickness preferably corresponds to the length of the cover in the direction in which the sidewall forms an end at or around the base of the tub at each point along its horizontal path. Preferably, the cover has an inner and an outer surface, with its sidewall thickness extending between the inner and outer surfaces. By tapering the sidewall of the cover from top to bottom within the vertical section, the contours of the inner and outer surfaces can be specifically designed such that light incident on the cover can be directed by refraction at the inner surface upon entering the cover and by refraction at the outer surface upon exiting the cover, thereby increasing the angle to the vertical plane.Preferably, the end of the cover formed on the outside of the side wall within the vertical section is a transverse end pointing away from the mounting side; more preferably, it also has at least one longitudinal end, and in particular both longitudinal ends, i.e., with respect to the longitudinal direction, a front and a rear end of the cover. The cover can form the transverse end within a first region of its path on or around the tub bottom, a first longitudinal end within a second region, and / or a second longitudinal end within a third region. Preferably, the horizontal section of the cover, in which it forms an end of the cover with its outside as described and runs as described, comprises at least the entire length of the side wall on the side of the tub bottom facing away from the mounting side.This ensures advantageous lateral illumination away from the wall when the wall light is mounted on the wall. In one embodiment, the horizontal section further comprises at least 10%, in particular at least 20%, in particular at least 30%, in particular at least 50% of the length of the side wall extending from the side of the housing opposite the mounting side along the transverse direction towards the mounting side. This ensures advantageous illumination at at least one of the longitudinal ends of the cover. The aforementioned length of the side wall extending from the side of the housing opposite the mounting side along the transverse direction towards the mounting side refers to the total length it has at both longitudinal ends.

[0014] In one embodiment, the cover has a cover body that forms the area of ​​the cover illuminated by the light sources. Within a section of the cover body that the light emitted onto the area propagates to reach the outside when the wall light is in operation, the cover body forms a transversely extending free space. At least a portion of the light emitted by the light sources onto the area passes through this free space before being emitted by the cover into the surrounding area of ​​the wall light. Because the cover body has such a section that forms this free space, particularly targeted light direction can be achieved due to the transition between the section and the free space and the resulting refraction of the propagating light. In one embodiment, the free space is filled with air.In one embodiment, the cover body, and thus also the body section, is made of a first material, wherein the free space is at least partially, and in particular completely, filled by a light-directing element made of a second material different from the first. In one embodiment, the free space is bounded by a contoured boundary wall. By at least partially filling the free space and / or by providing a contoured boundary wall that limits the free space and thus defines its volume, targeted further manipulation of the light can be achieved. In one embodiment, the light-directing element is at least partially formed by a seal that is arranged for sealing between the luminaire part and the cover. Preferably, the seal is made of a plastic. More generally, preferably, the cover is made of glass or a plastic.By designing a seal as a light-directing element, the wall light can be manufactured particularly easily and cost-effectively. In one embodiment, the free space is formed by a groove open towards the top of the cover. In another embodiment, the groove is at least partially filled when the wall light is in operation, for example by a seal and / or by a bonding compound, such as a hardened adhesive, that connects the light part to the cover.

[0015] In one embodiment, the wall light has an adjustment device that allows the position of the light source assembly and / or the position of the additional light source assembly to be changed, while the light source assembly or additional light source assembly remains unchanged within the interior of the housing, particularly the luminaire section, and is fixed relative to it. This can apply to multiple light sources when several are provided. Because the light source's position can be changed thanks to the adjustment device, while it remains unchanged within the interior of the light source and securely fixed to it, the beam pattern of the wall light can be finely adjusted. In one embodiment, the adjustment device allows the position of the light source relative to its associated optical element to be changed.In one embodiment, the position of the light source, together with an associated optical element, can be changed by means of the adjustment device. Preferably, a change in the position of the light source produced by the adjustment device allows the light emission angle to be changed, over which the wall lamp emits all the light originating from the light source. For example, such a change in position can be produced by the adjustment device such that the light emission angle, which is a defined solid angle, is shifted horizontally or tilted relative to the vertical axis, in particular shifted horizontally by at least 5 cm and / or tilted relative to the vertical axis by at least 1°, in particular at least 2°, in particular at least 3°.The light beam angle is defined as the spatial distribution of light and thus as a three-dimensional shape emitted by the wall luminaire in the form of light rays due to the light generated by the light source. As explained, the position of this shape in space can be changed by altering the luminaire's position. The adjustment mechanism is preferably accessible from the outside while the wall luminaire is in operation. This allows for a particularly advantageous fine-tuning of the light beam angle, even after the wall luminaire has been installed, i.e., with the housing mounted. It should be noted that the light source can be, for example, a single LED or an array of LEDs.

[0016] In one embodiment, the wall light has a diffuser associated with the cover, and / or the wall light has a further diffuser associated with the further cover. The diffuser and / or further diffuser can be designed as a reflector diffuser. In one embodiment, the wall light has a cover and a further cover, each with a diffuser associated with it, i.e., a diffuser is associated with the cover and a further cover with a further diffuser. In one embodiment, only the further cover has a diffuser associated with it. The term "further" diffuser is used only for conceptual association with "further" cover. The descriptions of diffuser and cover apply accordingly to further cover and further diffuser. The diffuser covers a horizontal section of the cover or further cover and has an opening that is aligned with the light source arrangement.The aperture is arranged for a further light source arrangement. For example, when a translucent cover is used, the aperture can conceal elements located inside the housing or luminaire section that need to be kept hidden, while the light source arrangement or further light source arrangement can shine light through the opening onto the cover or further cover. The design as a reflector aperture ensures particularly high light emission efficiency.

[0017] In one embodiment, both the luminaire component and the mounting component each have a retaining area, wherein the luminaire component can be detachably fastened to the corresponding retaining area of ​​the mounting component. This detachable fastening makes maintenance of the housing, or of a wall luminaire encompassing the housing, particularly advantageous. The mounting component can remain unchanged on a structural element, such as a wall, due to the detachable fastening, while the luminaire component can be removed from the mounting component for maintenance purposes.

[0018] In one embodiment, the holding area of ​​the luminaire part has a first hinge section and a first fixing section, and the holding area of ​​the mounting part has a second hinge section and a second fixing section. The first hinge section and the first fixing section are thus encompassed by the luminaire part, while the second hinge section and the second fixing section are encompassed by the mounting part. The first and second hinge sections can be detachably engaged to mount the luminaire part to the mounting part, thereby establishing a mounting state of the housing and forming a hinge connection between the mounting part and the luminaire part. The mounting state, like the operating state, refers to a defined arrangement of all housing components relative to one another. The arrangement of the components in the mounting state differs from the arrangement of the components in the operating state.In the assembled state, the aforementioned joint connection is formed by the engagement between the first and second joint sections. From the assembled state, the operating state can be achieved, whereby, starting from the assembled state, the luminaire part must pivot relative to the mounting part about a joint axis defined by the joint connection. The joint connection thus has the aforementioned joint axis, defining the pivotability of the mounting part and the luminaire part relative to each other to achieve the operating state from the assembled state. In the assembled state, the luminaire part and the mounting part occupy a defined angular position relative to each other, with respect to a rotation about the joint axis. Starting from the assembled state, the luminaire part and the mounting part can pivot relative to each other about the joint axis until they occupy a specific angular position, with respect to a rotation about the joint axis, which differs from the initial angular position.The first and second fixing sections can be detachably engaged at a specific angular position relative to the luminaire and mounting part, thereby fixing this angular position and realizing the operating state of the housing. In the described advantageous embodiment, the luminaire and mounting part thus occupy the specific angular position relative to each other in the operating state of the housing, and the first and second fixing sections are detachably engaged. The inventors recognized that by providing the described joint section and fixing sections, a particularly simple and robust fixing of the luminaire to the mounting part can be ensured. Furthermore, thanks to the detachable engagement between the first and second fixing sections, easy disassembly of the luminaire from the mounting part is possible, starting from the operating state.Such disassembly can be carried out, for example, by first releasing the engagement between the first and second fixing sections from the operating state, and then pivoting the luminaire part and mounting part around the joint axis until the assembly state is reached, after which, by releasing the engagement between the first and second joint sections, the luminaire part can be disassembled from the mounting part and thus removed from it.

[0019] In one embodiment, one of the fixing sections forms a locking mechanism, and the other of the fixing sections forms a locking device. For example, the first spring section formed by the luminaire part can form the locking device, and the second spring section formed by the mounting part can form the locking device. Of course, the reverse is also possible. Preferably, at least the locking mechanism has a spring. In one embodiment, both the locking mechanism and the locking device each have a spring. In another embodiment, the locking mechanism has a spring, whereas the locking device is rigid. By providing a locking mechanism and a locking device, a releasable engagement of the first and second fixing sections to fix the specific angular position can be achieved in a particularly simple and practical manner.In one embodiment, one of the locking device and locking mechanism has a recess, and the other has a projection that can be engaged in the recess. In another embodiment, at least one of the locking device and locking mechanism has a chamfer that forms a sliding surface for the other of the locking device and locking mechanism during assembly of the luminaire part to the mounting part. In another embodiment, at least one of the housing parts, i.e., at least one of the luminaire part and mounting part, has a base body. Preferably, the base body is manufactured in one piece, in particular from a metal or a metal alloy. Preferably, the base body comprises at least 80%, in particular at least 90%, and in particular at least 95% of the total mass of the respective housing part. Preferably, the base body is manufactured by die casting.In one embodiment, the locking device is encompassed by one of the housing parts, which has such a base body, wherein the locking device is integrally integrated into the base body. Preferably, the locking device is formed at least partially by a section formed in the base body by milling. In another embodiment, one of the housing parts has the aforementioned spring and a base body as described, wherein the spring is designed as a component separate from the base body and is fixed to it in such a way that it is spaced apart from a section of the housing part and is deflectable relative to this section. Preferably, the spring is encompassed by the locking device.Preferably, both housing parts each have a base body as described, wherein one of the housing parts, in particular the luminaire part, has a locking device integrally integrated into the base body as described, and the other of the housing parts, in particular the mounting part, has the spring of the locking device it encompasses in addition to its base body. By providing a spring as a separate component in front of the base body, the spring can be designed to be particularly simple and efficient. The spring is generally preferably made of sheet metal. It is generally preferable that the spring is made of a plate-like sheet metal piece, for example, by providing recesses, such as for providing fastening options and / or for defining the spring's elastic properties.Preferably, the detent device has the described lead-in chamfer, wherein the spring of the detent device is made of a sheet metal part, in particular a plate-shaped sheet metal piece. In one embodiment, the spring is fixed to two mounting sections, which may each be designed as a projection, of the housing part that the spring encompasses. Preferably, the mounting sections are spaced apart from each other by a certain distance, wherein the spring is fixed to the mounting sections bridging this distance and is deflectable from its rest position perpendicular to this distance. The distance is, of course, a distance in a specific direction, with deflection perpendicular to this direction preferably being ensured.Preferably, the described section, from which the spring is spaced, extends between the two mounting sections, the distance between the mounting sections being determined by the length of the aforementioned section of the housing part between the mounting sections. It has been found that fixing the spring to two mounting sections can be particularly robust and, moreover, this ensures a particularly simple guarantee of the required spring-elastic properties of the spring, even with a simple spring design.It has proven particularly advantageous to fix the spring to the base body of the housing part that encompasses the spring in such a way that the spring can be deflected in a specific direction, with the spring being guided along this direction in a linear guide formed by the housing part, in particular its base body, so that it is guided by the linear guide during deflection along this direction. This allows for a particularly advantageous design of the spring and thus a particularly reliable, releasable engagement of the fixing sections.

[0020] In one embodiment, one of the retaining areas has an opening accessible from the outside of the housing when it is in operation, through which at least one of the fixing sections can be accessed to release the angular position. For example, the opening can be designed so that a slotted screwdriver can be inserted through it from the outside. Preferably, the opening is aligned with the spring described above, so that the spring is accessible from the outside through the opening and can thus be actuated from the outside through the opening to release the engagement between the first and second fixing sections.

[0021] In one embodiment, at least one of the joint sections has at least one hook, while the other joint section has at least one retaining projection. In the assembled state, the hook engages behind the retaining projection. By providing hooks and corresponding retaining projections, a joint connection can be implemented particularly easily, which is sufficiently robust and ensures easy pivoting of the luminaire part and the mounting part relative to each other from the assembled state. Preferably, one of the hooks and retaining projections has a rounded section against which the other of the hooks and retaining projections rests in the operating state. This ensures particularly advantageous easy alignment of the luminaire part and the mounting part relative to each other.

[0022] In one embodiment, one of the retaining areas surrounds the other retaining area around a horizontal axis. This advantageously ensures both protection of the other retaining area and an aesthetically pleasing finish. Preferably, one retaining area has the described opening through which at least one of the fixing sections is accessible for releasing the angular position. Preferably, the luminaire component has this one retaining area. This allows the luminaire component to form a significantly larger portion of the housing's exterior surface when the housing is mounted on a wall and in operation.Preferably, in a state where the housing is in its operating state and mounted on a flat, vertical wall, the mounting element forms less than 1%, particularly less than 0.5%, and in particular no section at all of the housing's exterior surface accessible from the outside in this state. It is naturally assumed that the wall extends vertically and horizontally, and that the housing, when mounted on the wall, lies completely within the wall's extent in both directions. Generally, it is preferred that the housing's exterior surface, which is accessible from the outside when mounted on a flat, vertical wall, is screwless.This ensures easy mounting and dismounting of the housing on the wall, as well as a visually appealing appearance when mounted. The mounted state naturally refers to the mounting bracket being fixed to the wall and the luminaire being fixed to the wall by means of the mounting bracket. Preferably, the exterior surface, accessible from the outside when mounted, is completely enclosed by the luminaire and all covers attached to it, in particular any covers.

[0023] In one embodiment, the mounting part has a trough-like section with a trough base and a side wall surrounding the trough base, wherein the trough-like section of the mounting part forms the mounting section of the housing's mounting side. Preferably, the mounting section is at least partially, and in particular completely, formed by the side wall. Preferably, at least one opening for an electrical cable is provided in the trough base. Due to the provision of the trough-like section, which forms the mounting section of the housing and with which the housing rests against the wall when mounted on the wall, a receiving volume is created in the wall-mounted state, which can serve to receive components, for example, electrical cables, screw heads, or the like.A generally preferred design therefore includes a receiving space defined by the base and side wall for accommodating a section of an electrical cable. Preferably, when wall-mounted, the electrical cable extends through the opening in the base towards the luminaire, particularly into the interior of the luminaire. Preferably, fixing lugs are provided on the base and / or side wall to guide the electrical cable within the receiving space. These fixing lugs can form an arrangement through which the electrical cable can be guided, thus defining its position within the receiving space. The provision of the trough-like section, and especially the receiving space defined by it, can greatly simplify the mounting of the housing or a wall luminaire encompassing the housing to the wall.

[0024] In one embodiment, each of the holding areas has a contact section that extends in a horizontal longitudinal direction and in a vertical direction. When the housing is in operation, the holding areas of the mounting part and the luminaire part press against each other directly or indirectly via a seal. This ensures a particularly reliable fixation of the luminaire part and the mounting part to each other, and in particular a seal between the mounting part and the light source.

[0025] In one embodiment, the mounting section of the luminaire part completely encloses an access opening to the interior of the luminaire part. After the luminaire part has been detached from the mounting part, starting from the operating state, the interior of the luminaire part is thus accessible through this access opening. This can be particularly advantageous for servicing luminaire components located inside the luminaire part. Preferably, the mounting section of the mounting part also completely encloses the access opening when the housing is in its operating state. This ensures that the access opening is sealed to the environment when the housing is in operation, but that elements from the mounting part, such as at least one electrical cable, can pass through the access opening into the interior of the luminaire part.

[0026] In one embodiment, to drain water that has accumulated on the top side of the housing, at least one of the system sections extends obliquely to the longitudinal and vertical directions along at least 70% of its longitudinal extent and / or is covered by a roof-like projection extending obliquely to the longitudinal and vertical directions along at least 70% of its longitudinal extent. In another embodiment, to drain water that has accumulated on the top side of the housing, at least the seal extends obliquely to the longitudinal and vertical directions along at least 70% of its longitudinal extent and / or is covered by a roof-like section extending obliquely to the longitudinal and vertical directions along at least 70% of its longitudinal extent.Providing a sloping top surface, as described above, on at least one of the system sections and / or at least the seal and / or at least a roof-like section has proven particularly advantageous, since this effectively prevents water from remaining on the top surface of the system sections or the seal and thus prevents water from penetrating the interior of the luminaire. Preferably, to drain away water that has accumulated on the top surface of the housing, at least one of the system sections and / or at least the seal and / or at least the aforementioned roof-like section slopes diagonally across its entire top surface to both the longitudinal and vertical directions.

[0027] The invention further relates to a set comprising several different wall lights, each designed as an embodiment of a wall light according to the invention. A first of the wall lights has the same light source arrangement as a second of the wall lights, but a different cover. The different covers of the first and second wall lights are designed differently such that, due to the different covers, the first and second wall lights each have different light emission characteristics. Thus, the two different covers provide different light distribution.In an alternative or supplementary embodiment, the first and second wall lights each have the same light source and / or the same mounting part, in particular the same housing, wherein their covers are designed differently as described, so that they provide different light distribution and thus, due to the different covers, the first and second wall lights each have different light emission characteristics. The set according to the invention enables the cost-effective provision of different wall lights whose light emission characteristics are geared towards different needs, advantageously allowing the use of identical parts. The same light source arrangement, the same light source, the same mounting part, or the same housing refers to the fact that the respective elements are identically designed.In a particularly preferred embodiment, the light emission characteristics of the first and second wall luminaires differ in such a way that the second wall luminaire emits at least 5%, in particular at least 10%, of the light emitted by it in its surroundings, which originates from its light source arrangement, at an angle relative to the vertical plane that is greater than a maximum emission angle, in particular the upper limit angle, of the first wall luminaire relative to the vertical plane.

[0028] The various solutions according to the invention may each have features in embodiments that are described here in relation to embodiments of a different solution or embodiments known from the prior art.

[0029] The invention is explained in more detail below with reference to seven figures and exemplary embodiments.

[0030] They show: Fig. 1: Various schematic representations of different views of an embodiment of a wall lamp according to the invention; Fig. 2: various schematic representations of principles showing different views of an embodiment of a wall lamp according to the invention; Fig. 3: in various schematic diagrams, views of components of an embodiment of a wall lamp according to the invention; Fig. 4: in various schematic diagrams showing views of components of an embodiment of a wall light according to the invention; Fig. 5: in various schematic diagrams, views of components of an embodiment of a wall lamp according to the invention; Fig. 6: Various schematic diagrams illustrating the radiation characteristics of a wall lamp; Fig. 7: in a schematic diagram components of an embodiment of a wall light according to the invention; Fig. 8: In various schematic diagrams, views of components of an embodiment of a wall lamp according to the invention.

[0031] In Fig. 1 comprehensive the Fig. 1a and Fig. Figure 1b shows an embodiment of a wall light 1 according to the invention in various schematic representations from different perspective views. The illustrated embodiment of a wall light 1 according to the invention is designed as a wall light. The wall light 1 has a housing comprising a mounting part 3, a light part 2, and a cover 4. The wall light 1 has a rear side which is Fig. 1b can be seen, as well as a front side facing away from the back side and which is in Fig. 1a. The rear side is designed as the mounting side of the wall light 1. The wall light 1 is designed to be mounted on a wall with its mounting side extending in a vertical direction Z and a longitudinal direction X, such that it rests against the wall with a mounting section formed by the mounting part 3. In this mounted state of the wall light 1, the front is spaced from the mounting side in the transverse direction Y, and with respect to the longitudinal direction X, the wall light 1 is bounded by two diverging longitudinal sides that run between the front and back. In addition, the wall light 1 has a top surface which is located in the Fig. 1a, Fig. Figure 1b shows a top surface and a bottom surface, the vertical extent of which is limited by the top surface on one side and the bottom surface on the other. While the top surface of the wall light 1 is essentially formed by the closed top surface of the light part 2, the bottom surface of the wall light 1 is essentially formed by the closed bottom surface of the cover 4.

[0032] In Fig. 2 comprehensive the Fig. 2a and Fig. 2b shows a further embodiment of a wall lamp 1 according to the invention in two different perspective views, in Fig. 2a in an oblique view from below, in Fig. 2b in an oblique view from above. The wall light of the embodiment according to Fig. 2 differs from the wall light of the embodiment according to Fig. 1 essentially by the fact that its cover 8 is designed differently than the cover 4 of the wall light 1 according to Fig. 1 and that it has a further cover 8 which forms at least a predominant part of its upper surface. While the luminaire part 2 of the embodiment according to Fig. 1 thus having only one light emission side, namely its underside, and only one light emission opening which is closed by the cover 4, the luminaire part 2 of the wall luminaire 1 according to Fig. 2 two light emission sides, namely top and bottom, each having a light emission opening which is closed by a cover 8. The wall lights 1 according to Fig. 1 and Fig. 2 thus have different light parts 2 and each has a mounting part 3. The mounting part 3 of the wall light 1 according to Fig. 1 is in Fig. 1b to be recognized, while the mounting part 3 of the wall light 1 according to Fig. 2 is not shown. In principle, both wall lights 1 can have the same mounting part 3. At a minimum, each wall light 1 can have a mounting part 3 that is compatible with the light part 2 of the other wall light 1, so that the light part 2 of each wall light 1 can be attached to the mounting part 3 of the other wall light 1 in the same way as the light part 2 of each wall light 1 can be attached to the mounting part 3 of the respective wall light 1. Since these properties of the wall light 1 relate to the properties of its housing, this is naturally also the case for different housings, which may differ at least in their light part and, in particular, in their mounting part. The light parts 2 of the wall lights 1 according to Fig. 1 and Fig. 2 differ, as explained, in that the luminaire part 2 of the housing of the wall luminaire according to Fig. 1 is closed at its top, whereas the light part 2 of the wall light 1 according to Fig. 2 has a further light emission opening on its upper side. In the present case and according to the invention, the lamp parts 2 are advantageous as shown in the Fig. 1 and Fig. 2 shown, manufactured from an identically designed pre-base body which already has a light emission opening on its underside, wherein the pre-base body, as explained generally here, can be manufactured, for example, by means of metal die casting, and wherein the further light emission opening of the luminaire part 2 according to Fig. 2 is produced by milling in the pre-base body.

[0033] In Fig. 3 comprehensive the Fig. 3a, Fig. 3b, Fig. 3c, Fig. 3D and Fig. Figure 3e shows various components of an embodiment of a wall light 1 according to the invention schematically in different schematic representations and different views. Fig. Section 3 serves to explain the interaction of the luminaire part 2 and the mounting part 3 of an embodiment of a wall luminaire according to the invention, as well as to explain how a wall luminaire 1 according to the invention can be mounted on a wall that extends horizontally in the vertical direction Z and longitudinal direction X. The explanations concerning the wall luminaire 1 are, of course, applicable to the explanations concerning the housing of the wall luminaire 1. The interaction of the luminaire part 2 with the mounting part 3 of the embodiment according to Fig. 3 is analogous to the interaction of the luminaire part 2 and mounting part 3 of the embodiment according to Fig. 1, whose lighting part 2 and mounting part 3 in Fig. 1b are shown. As can be seen from the overview of the Fig. 1b and Fig. As can be seen in Figure 3, the mounting part 3 has a vertical direction indicator 391, 392 on its side facing the mounting side of the housing, or on its side forming at least a part of the mounting side, and on its side facing away from the mounting side. The luminaire part 2 has a vertical direction indicator 29 corresponding to the vertical direction indicator 391, 392 on its side facing the mounting side, or on its side forming at least a part of the mounting side. Providing a vertical direction indicator on the mounting part 3 and on the luminaire part 2 is generally advantageous according to the invention. The vertical direction indicator is information understandable to a person skilled in the art regarding the orientation of the wall luminaire with respect to the vertical direction Z, i.e., an indication of which side of the housing is the top of the housing and which side of the housing is the bottom of the housing.For example, the vertical direction indicator 391, 392 or the corresponding vertical direction indicator 29 can be in the form of an arrow and / or in the form of a label. It is essential that the vertical direction indicator 391, 392 and the corresponding vertical direction indicator 29 provide corresponding information for a person skilled in the art; in particular, they can provide identical information or be identically designed. Providing the vertical direction indicator 391, 392 or the corresponding vertical direction indicator 29 is generally particularly advantageous according to the invention, since a person skilled in the art can intuitively align the mounting part 3 correctly when mounting it on a wall and can then easily align the luminaire part 2 directly and correspondingly with each other when mounting it on the mounting part 3. Fig. Figure 3a shows mounting part 3 and luminaire part 2 with their sides facing each other in the operating state of the housing and the wall luminaire 1, respectively. It can be seen that mounting part 3 and luminaire part 2 each form a holding area, the holding area of ​​the luminaire part 2 having a circumferential section 20 that completely encloses the holding area of ​​mounting part 3, a horizontally circumferential axis, in this case an axis in the transverse direction Y. This effectively protects mounting part 3 when the wall luminaire 1 or its housing is mounted on a wall, and also advantageously creates a seal between mounting part 3 and luminaire part 2.In the operating state of the housing, and likewise in the operating state of the wall luminaire 1 encompassing the housing, mounting part 3 and luminaire part 2 each bear against each other with a contact section and press against each other, the contact being only indirect, namely indirectly via a seal 5. The contact sections 25, 35 are each designed in a ring-like form and extend in the longitudinal direction X and vertical direction Z, which is generally advantageous according to the invention. The contact sections are encompassed by the respective holding area of ​​mounting part 3 and luminaire part 2 and enclose an access opening of the luminaire part 2 all around, which is located in . Fig. 3 can be seen. Likewise, in the operating state, the seal 5 completely surrounds the access opening. In the Fig. 3D and Fig. 3e shows a simplified schematic representation of the interaction between system sections 25, 35 and seal 5. In the Fig. 3D and Fig. Figure 3e shows the seal 5 overlapping with the light part 2, which is of course not the case in practice; rather, due to the pressed-in connection of the system sections 25 and 35, the seal 5 is compressed against each other around the part that is in the Fig. 3D and Fig. 3e is shown as overlapping with the lighting part 2. From the overall view of the Fig. 3a and Fig. 3c in combination with the embodiment described in Fig. As shown in Figure 1b, the mounting part 3 has a trough-like section comprising a trough base 30 and a side wall 301 surrounding the trough base. A pressure equalization device 32 is provided on the trough base, as are feedthrough openings 37 for routing an electrical cable through the trough base. The feedthrough openings 37 are each designed as watertight sealed feedthrough openings, and the pressure equalization device 32 is similarly designed as a watertight equalization device. Furthermore, it is evident that the mounting part 3 forms a mounting section for the wall light 1 or its housing, which is formed by elongated holes 361, 362 surrounding edges and by support sections 363.With this assembly section, the mounting body 3 can be mounted against a flat wall extending in the vertical direction Z and longitudinal direction X, as described above. The elongated holes 361, 362 are, advantageously according to the invention, offset from one another and aligned in directions perpendicular to each other. In this case, the first elongated hole 361 is aligned in the vertical direction, the second elongated hole 362 in the longitudinal direction X. The elongated holes 361, 362 extend with a greater length in the direction in which they are aligned than in the direction perpendicular to them.Due to the provision of these two elongated holes 361, 362, which are aligned perpendicular to each other, the wall light 1 or the mounting part 3 or its housing can be particularly advantageously first mounted on a wall with a play in the longitudinal direction X and vertical direction Z and then aligned in a fine alignment, after which the mounting section is pressed against the wall, for example by means of screws which are passed through the elongated holes 361, 362 and in particular through through openings provided in the support sections 363.

[0034] From the overall view of Fig. 3a and Fig. As can be seen in section 3b, the system sections 25 and 35, as well as the seal 5, each run obliquely to the longitudinal and vertical directions on their upper surfaces when the wall light is in operation. It should be noted here that the vertical, longitudinal, and transverse directions are defined with reference to the housing of the wall light itself or to the wall light 1 itself, and that the vertical direction, for example, when the wall light 1 is mounted on a wall, can advantageously be aligned parallel to the normal force acting on the ground. The oblique course of the seal 5 is shown in Fig. 3b explained in detail. The seal 5 has an upper end 50 on its upper surface, from which at least one inclined section 51, 52, 53 extends downwards and laterally at an angle to the longitudinal direction X and to the vertical direction Z, which is generally advantageous according to the invention. This inclined design of the seal, and in particular the inclined design of the contact sections 25, 35, effectively prevents water that gets onto the seal 5 or the contact sections 25, 35 from the upper surface of the wall light 1 or its housing from remaining there; instead, such water is effectively drained away due to the inclined design of the upper surface of the seal or contact sections.

[0035] From the overall view of Fig. 3a, Fig. 3c, Fig. 3D and Fig. 3e further shows how in the embodiment according to Fig. 3. The luminaire part 2 is to be attached to the mounting part 3. The luminaire part 2 has a first joint section 23, and the mounting part 3 has a second joint section 33. Furthermore, the luminaire part 2 has a first fixing section 21, and the mounting part 3 has a second fixing section 31. When the luminaire part 2 is mounted to the mounting part 3, after the mounting part has been fixed to a flat wall with its mounting section, the luminaire part 2 can first engage the first joint section 33 of the mounting part 3 with its first joint section 23, thereby creating a joint connection with a joint axis. The luminaire part 2 can then be pivoted relative to the mounting part 3 about this axis until a specific angular position is reached, in which the first fixing section 21 engages with the first fixing section 31, thus securing the specific angular position.In the operating state of the housing or the wall light 1, the fixing sections 21, 31 form a snap-fit ​​connection, whereas the joint sections 23, 33 form the articulated connections in both the operating and the assembled state of the housing. The assembled state is reached as soon as the joint sections 23, 33 are engaged with each other. In this case, the first joint section 23 is designed in the form of hooks, and the second joint section 33 is designed as a retaining projection, the second joint section 33 having rounded sections 330 against which the hooks or the first joint section 23 bear in the operating state. The first fixing section 21 is designed as a projection with a chamfer, whereas the second fixing section 31 comprises a spring designed as a plate-like sheet metal section in which a recess 310 and a guide lug 311 are provided.The spring is attached to two mounting sections 32 of the assembly part 3, which are designed as projections, and extends from its in . Fig. 3a shown in rest position is deflectable, while from the assembled state it slides along the lead-in chamfer of the projection 21 to reach the operating state, which is generally required according to the invention. In the operating state, the projection 21 engages in the recess 310 of the spring of the second fixing section, as shown in Fig. Figure 3e is shown. Starting from the operating state, the spring can be deflected by inserting a tool, for example a slotted screwdriver, through the opening 22 from the outside and pressing it against the spring, the opening 22 being provided in the holding area of ​​the lamp part 2.

[0036] In this case, the spring is guided by its guide nose 311 relative to the mounting part 3 during the described deflection, i.e. both during the deflection starting from the operating state to release the detent connection between detent device and detent assembly or between projection 21 and recess 310, and during the deflection starting from the assembly state to reach the operating state.

[0037] From the overall view of Fig. 3a and Fig. Figure 3c further shows that mounting part 3 and luminaire part 2 each have lateral lead-in chamfers 28, 38 on their outer sides, which allow for the simplest possible sliding against each other during the mounting of the luminaire part 2 on the mounting part 3. These lead-in chamfers 28, 38 are provided on the holding areas of the luminaire part 2 and mounting part 3, in particular at least partially on the section 20 of the holding area of ​​the luminaire part 2 that surrounds the mounting part 3 in the operating state, which is generally advantageous according to the invention. In the described embodiment, stops 210 are also provided on the luminaire part 2, against which the mounting part 3 can bear with corresponding stop sections in the operating state, thereby ensuring even further improved guidance of the mounting part 3 and the luminaire part 2 relative to each other.In the described embodiment, the luminaire part 2 is manufactured starting from a pre-basic body which is produced by means of metal die casting, wherein both the further light emission opening provided on the top, which is in . Fig. 3a shows that the shape of the hooks of the first joint section 23 as well as the shape of the projection of the first fixing section 21 are produced by mechanical processing of the pre-base body, namely in this case by milling.

[0038] In Fig. 4 comprehensive the Fig. 4a and Fig. Figure 4b shows the interaction between the luminaire part 2, the optical element 6 and the cover 4 of an embodiment of a wall luminaire 1 according to the invention, as is the case, for example, in Fig. Figure 1 shows that the cover 4 is shaped like a trough, which is generally advantageous according to the invention. The cover 4 has a light-guiding contour, which in this case is formed by a variation in thickness along the vertical direction Z, which in this case is formed by the course of the inside of the cover 4 with the step 410 and the course of the outside of the cover 4.

[0039] The cover 4 has a base 40 and a side wall 41 that completely encloses the base 40. In the present embodiment, the light-guiding contour is formed exclusively by the side wall 41 of the cover 4. The light-guiding contour is provided exclusively within a horizontal section that extends from the end of the cover 4 pointing away from the mounting side along the transverse direction Y towards the mounting side. This ensures particularly advantageous lateral illumination away from the wall when the wall light 1 is mounted on a wall.The side wall 41, forming the light-guiding contour, creates an end of the cover 4 with its outer surface. This end is a transverse end, namely the end of the cover 4 pointing away from the mounting side along the transverse direction Y. This outer surface extends over a section of the horizontal course of the side wall 41 around the base 40 and, within a vertical section, has a downward course along the vertical direction Z towards the opposite end. This vertical section corresponds to the vertical extent of the step. Within this vertical section, the side wall has a thickness that tapers from top to bottom along the vertical section.In the described embodiment, this configuration of the side wall 41 is present only over the section of the horizontal course of the side wall 41 around the base 40, where the side wall 41 is provided at the end of the base 40 facing away from the mounting side and where it thus forms a transverse end of the cover 4 facing away from the mounting side. The light emission opening of the luminaire part 2 is provided on the upper side of the luminaire part 2 and is bounded by a circumferential edge that forms a groove 24 for receiving an end section 420 of the side wall 41 of the cover 4. The side wall 41 also forms a contact section 42 of the cover 4, which rests against the circumferential edge of the first luminaire part 2 when the wall luminaire 1 is in operation.In the embodiment described here, the cover 4 is connected to the luminaire part 2 such that the side wall 41, with its end section 420, is bonded to the luminaire part 2 within the groove 24 of the circumferential edge. A diaphragm 60 partially closes the light emission opening, but the diaphragm 60 has an opening within which optical elements 6 and their respective associated LEDs are arranged. In this particular embodiment, and generally according to the invention, the diaphragm 60 is advantageously designed as a reflector plate. The optical elements 6 are designed for asymmetrical emission such that the light distribution they provide, with which they emit light that reaches them from the associated LEDs, is angled relative to the vertical direction Z.With this light distribution, in the operating state the light emitted by the LEDs reaches the cover 4, including the thickness variation of the cover 4, whereby the light is deflected further from the vertical direction Z by the thickness variation until it is emitted from an outside of the cover 4 into the vicinity of the wall light 1.

[0040] In Fig. 5 comprehensive the Fig. 5a and Fig. Figure 5b shows the interaction of the cover 8 with the luminaire part 2 of an embodiment of a wall luminaire, such as that found, for example, in Fig. 2 is shown. Such a cover 8 is located both on the top, which is in Fig. 5a is shown, as well as on the underside, which is not shown. The cover provided on the underside is illuminated by a light source arrangement comprising light sources and optical element 6, as is shown, for example, in Fig. Figure 4a shows that a further light source arrangement comprising another optical element 7 and further light sources concealed by it is provided on the upper surface. This further light source arrangement is angled relative to the vertical direction Z, whereas the further optical element 7 is designed to distribute the incident light emitted by the associated LED symmetrically. However, due to the angled arrangement of the entire further light source arrangement comprising further light sources (in this case, LEDs) and the further optical element 7, the light distribution emitted by this light source arrangement is directed towards the wall when mounted on the wall. The further light emission aperture provided on the upper surface is partially concealed by an aperture 70, which has an opening within which the light source arrangement comprising LEDs and optical element 7 is arranged.In the present and generally advantageous configuration, the aperture 70 is designed as a reflector aperture. In the present and generally advantageous configuration, the aperture 70 is angled. The cover 8 has an opaque central area 81 and an at least predominantly opaque edge area 82. This ensures both appropriate transparency and the concealment of visually unappealing elements. The light emission opening, which is located in... Fig. Figure 7a shows that the component is produced by milling a pre-base body. A circumferential edge with a shoulder 240 is provided, on which the cover 8 rests in the operating state and to which it is bonded, which is generally advantageous according to the invention.

[0041] In Fig. 6 comprehensive the Fig. 6a and Fig. 6b presents simplified schematic diagrams of the radiation characteristics of various wall lights. Fig. 6a and Fig. 6b shows the emission characteristic by the light distribution curve of the light emitted by the wall luminaire in its surroundings, represented by a cross-section through the fundamentally three-dimensional light distribution curve body, which runs along the transverse direction Y and along the vertical direction Z. From the light distribution curves (LVK) that are in the Fig. 6a and Fig. As shown in Figure 6b, all light emitted by the wall light is emitted exclusively within an angular range defined by a lower limit angle of 0° and an upper limit angle of a maximum of 90° to a vertical plane that runs parallel to the depicted vertical direction Z and perpendicular to the depicted transverse direction Y. The wall light according to Fig. 6a has a cover that does not have a light-directing contour. The wall light according to Fig. 6b differs in front of the wall light according to Fig. 6a solely by virtue of its cover having a light-guiding contour, but otherwise identical to the cover of the wall light according to Fig. 6a is trained. From the overall view of the Fig. 6a and Fig. It is evident from section 6b that by providing the light-guiding contour of the cover, such a light direction of the light incident on the cover is achieved that the cover emits light into the vicinity of the wall lamp at an angle relative to the vertical plane that is greater than the upper limiting angle 603, which limits the angular range within which the light source arrangement of the wall lamp emits light onto the cover. The upper limiting angle 603 is shown in the Fig. 6a and Fig. 6b is shown for each of the wall lights and is identical for both wall lights due to the fact that the wall lights differ only in their covers, as explained. While the upper limiting angle for the wall light according to Fig. 6a also the upper limit angle 603 of the angular range within which light is emitted from the cover of the wall light into the surroundings, is in the embodiment according to Fig. 6b While the main portion of the light in front of the wall lamp continues to be emitted within the angular range in which the light source arrangement shines light onto the cover, a small but advantageous portion for lateral illumination is also emitted laterally at an angle above the upper limit angle 603. By providing such a certain portion of laterally emitted light, lateral illumination is ensured on the one hand, and unnecessary upward light pollution is prevented on the other.

[0042] In Fig. Figure 7 shows, in a highly simplified schematic diagram, components of an embodiment of a wall light, in this case the cover 4 and a section of the light part 2. Fig. Figure 7 shows, as an example, the light rays 600, which are in Fig. 7. The light source arrangement of the wall luminaire (not shown) shines onto the aforementioned area of ​​the cover 4. Of these light rays 600, slightly deflected light rays 601 are emitted from the cover 4 into the surroundings of the wall luminaire within the aforementioned angular range, while more strongly deflected light rays 602 are emitted from the cover 4 above the upper limit angle. The light-guiding contour of the cover 4 is shown in the Fig. In the embodiment shown in Figure 7, the side wall of the trough-shaped cover 4 forms the trough. It should be noted that the term "trough-shaped" is used here both for a cover 4 in which the side wall completely encloses the bottom of the trough horizontally, and for a cover 4 in which the side wall does not completely enclose the bottom of the trough. For example, as shown in Figure 7, the side wall can be... Fig. As shown in Figure 7, the side wall can also be provided on only one side of the tub base and thus not surround the tub base, but is arranged only on one side of the tub base. It is essential for the tub shape that the side wall extends away from the tub base, with the tub base running horizontally and the side wall extending vertically away from the tub base. Providing a side wall that completely encloses the tub base is particularly advantageous for creating a seal between the luminaire element 2 and the cover 4 and / or for emitting light from the cover 4 along the longitudinal direction forwards and / or backwards.

[0043] In Fig. 8 comprehensive the Fig. 8a, Fig. 8b and Fig. Figure 8c shows components of various embodiments of a wall lamp according to the invention, with the components only shown in part to illustrate their interaction by way of example. The components shown in the Fig. 8a, Fig. 8b and Fig. The wall luminaires shown in Figure 8c each have a cover 4 and a luminaire part 2. The cover 4 is shaped like a trough and has a trough base 40 and a side wall 41. In this case, the cover is formed by a cover body that creates a recess 400, which is designed as an upwardly open groove. The recess is provided within a section of the cover body, through which the light emitted onto the aforementioned area propagates to reach the outside, and which thus forms at least partially, and in this case completely, the light-guiding contour of the cover 4. By providing the recess 400, advantageous light refraction transitions between the cover body and the recess 400 can be achieved, which allows the radiation pattern of the wall luminaire to be particularly advantageously adjusted. In the embodiment according to Fig. In 8b, a seal 501 is arranged within the free space 400, which extends into the free space 400 only to the extent that light emitted from the light source arrangement of the wall lamp onto the cover 4 passes through the free space 400 without contacting the seal 501. In other embodiments, the seal can also be designed as a light-guiding element through which at least part of the light emitted from the light source arrangement onto the aforementioned area of ​​the cover 4 propagates before being emitted from the cover into the surroundings of the wall lamp, which can be particularly advantageous for fine-tuning the beam pattern of the wall lamp.Generally, preferably, the arrangement of a body in the free space, in particular a seal in the free space, allows the free space to fulfill several functions, for example, simplifying a reliable seal between cover 4 and luminaire part 2 and providing or supporting a desired light guidance of the light guidance contour. In the embodiment according to . Fig. 8c a light-guiding body 502 is provided in the free space 400, wherein a seal 503 is provided only outside the free space 400 between luminaire part 2 and cover 4. Reference symbol list 1 wall light 2 light parts 3 Mounting part 4 Cover 5 Seal 6 optical element 7 Optical element 8 Cover 10 Lighting component arrangement 11 Operating device Section 20 21 Fixing section 22 Opening 23 Joint section 24 Nut 25 Plant section 26 Guide rail 27 Guide rail 28 Inlet slope 29 corresponding vertical direction indicator 31 Fixing section 32 Pressure equalization device 33 Joint section 35 Plant section 37 through-holes 38 Inlet slope 40 bathtub floor 41 Side wall 42 Plant section 50 upper end 51 Inclined section 52 Inclined section 53 Inclined section 60 aperture 70 aperture 100 lighting component holders 101 Leadership Section 102 Management section 210 keystrokes Paragraph 240 300 fixing cams 301 Side wall 310 Exclusion 311 Lead nose 330 rounded sections 360 terminal block 361 Slotted Hole 362 slotted hole 363 Support section 391 vertical direction indication 392 vertical direction indication 400 free space 410 level 420 End section 501 Seal 502 Light guide bodies 503 Seal 600 light beams 601 Light beam 602 Light beam 603 upper limiting angle X Longitudinal direction Y transverse direction Z Vertical direction

Claims

[1] Wall luminaire (1) comprising a housing having a mounting side extending in a vertical direction (Z) and in a longitudinal direction (X) by which it can be attached to a wall extending in a vertical and longitudinal direction, wherein at least one mounting section of the mounting side of the housing is formed by a mounting part (3) of the housing, and wherein the housing has a horizontally extending light emission side, which forms a bottom or top of the housing and on which a light emission opening formed by a luminaire part (2) of the housing is provided, wherein light sources designed to emit light are arranged in the housing, each of which is associated with an optical element (6, 7) arranged between the respective light source and a cover (4, 8) closing the light emission opening, wherein a light source arrangement is formed by the light sources and the optical element (6, 7) associated with them,the light emitted by the light sources is directed, for at least a predominant proportion, within an angular range limited by a lower limiting angle of at least 0° relative to a vertical plane and an upper limiting angle (603) of at most 90° relative to the vertical plane (Z), onto at least one area of ​​the cover (4, 8), wherein the cover (4, 8) is designed to emit the light emitted by the light sources onto its area and propagated through it into an environment of the wall lamp (1), , characterized by , that the cover has a light-guiding contour by which the light radiated onto the area within the angular range is guided in such a way that the cover (4, 8) emits at least a part of the light radiated onto the area within the angular range at an angle greater than the upper limit angle (603) relative to the vertical plane into the vicinity of the wall lamp (1), and / or that a further light source arrangement with further light sources, each of which is assigned a further optical element (6, 7) which is arranged between the respective further light source and a further cover (4, 8) closing a further light emission opening, which is provided on a further light emission side vertically opposite the light emission side, wherein the further light source arrangement is designed to shine the light emitted by the further light sources onto the further cover (4, 8) and the further cover (4, 8) is designed to emit the light radiated onto it by the further light source arrangement and propagated through it into the surroundings of the wall lamp (1), wherein in particular the further light source arrangement is arranged on a mounting surface tilted to the vertical plane, in particular a mounting surface oriented at an angle of less than 90° to the vertical plane. [2] Wall light (1) according to claim 1, characterized by , that the light-guiding contour is provided only within a horizontal section of the cover which extends over less than 50%, in particular less than 30%, in particular less than 20% of the total horizontal extent of the cover (4, 8), wherein the horizontal section forms an end of the cover (4, 8) pointing away from the mounting side along a transverse direction (Y) and extends from this end towards the mounting side, wherein in particular the horizontal section furthermore forms at least one longitudinal end of the cover (4, 8). [3] Wall light (1) according to claim 2, characterized by , that the horizontal section extends over less than 50%, in particular less than 30%, in particular less than 20% of a side of the cover (4, 8) facing the mounting side, and in particular is spaced from it in the transverse direction (Y). [4] Wall light (1) according to any one of the preceding claims, characterized by , that the light source arrangement is designed as an inherently asymmetric light source arrangement, at least one of whose optical elements (6, 7) is designed to asymmetrically direct the light emitted by the light source associated with it. [5] Wall light (1) according to any one of the preceding claims, characterized by , that the light guidance contour is formed at least partially by a thickness variation of a vertical thickness of the cover 84, 8), wherein in particular the thickness variation lies within the area irradiated by the light source arrangement, wherein in particular the thickness variation is formed at least partially by a step (410). [6] Wall light (1) according to one of the preceding claims, characterized by, that the cover (4, 8) has on its outer side, pointing away from the mounting side in the transverse direction (Y) over a vertical section, a course directed downwards along the vertical direction (Z) towards the mounting side, in particular a rounded course which at least partially forms the light-guiding contour. [7] Wall light (1) according to any of the preceding claims, characterized by , that the cover (4, 8) is designed in a tub-like form and comprises a tub bottom (40) and a side wall (41) arranged laterally on the tub bottom (40), in particular surrounding it, wherein in particular the light-guiding contour is formed at least partially, in particular at least predominantly, by the side wall (41). [8] Wall light (1) according to claim 7, characterized by, that the side wall (41) forms an end of the cover (4, 8) with its outer side, at least partially forming the light-guiding contour, and has a downward direction towards the opposite end along the vertical direction (Z) over a section of its horizontal course on the tub bottom (40) within a vertical section, wherein the side wall (41) has a side wall thickness that tapers from top to bottom along the course within the vertical section. [9] Wall light (1) according to claim 8, characterized by, that the end of the cover (4, 8) is a transverse end pointing away from the mounting side and in particular at least a longitudinal end of the cover, wherein in particular the section of the horizontal course comprises at least the entire length of the side wall (41) on the side of the tub bottom (40) facing away from the mounting side and in particular at least 10%, in particular at least 20%, in particular at least 30%, in particular at least 50% of the length of the side wall (41) from the side of the tub bottom (40) facing away from the mounting side to the mounting side. [10] Wall light (1) according to any one of the preceding claims, characterized by, that the cover (4, 8) has a cover body which forms the area illuminated by the light sources, wherein the cover body forms within a body section which the light emitted onto the area propagates to reach the outside, a free space (400) extending in a transverse direction through which at least a part of the light emitted by the light sources onto the area passes before it is emitted from the cover into the surroundings of the wall lamp, wherein in particular the cover body is made of a first material and the free space (400) is at least partially filled by a body, in particular by a light-guiding body (502) which is made of a second material different from the first material and / or the free space (400) is bounded by a contoured boundary wall. [11] Wall light (1) according to claim 10, characterized by, that the body, in particular the light-guiding body (502), is at least partially formed by a seal (501) which is arranged for sealing between the luminaire part (2) and the cover (4, 8). [12] Wall light (1) according to one of claims 10 or 11, characterized by , that the free space (400) is formed by a groove (24) open towards the top of the cover (4, 8). [13] Wall light (1) according to any one of the preceding claims, characterized by , that at least 3%, in particular at least 5%, in particular at least 10% and in particular less than 30%, in particular less than 20%, in particular less than 15% of the light emitted by the light sources in the angular range onto the cover (4, 8), in particular of the total light emitted by the light sources onto the cover (4, 8), is guided by the light guidance contour. [14] Wall light (1) according to any one of the preceding claims, characterized by, that the further light source arrangement is designed as an inherently symmetrical light source arrangement, at least one of which is further configured as an optical element (6, 7) for symmetrically directing the light emitted by the light source assigned to it. [15] Wall light (1) according to any one of the preceding claims, characterized by, wherein the at least one optical element (6, 7) and the at least one further optical element (6, 7) each have a light-entry surface and a light-emission surface, wherein they are arranged in such a way as to their respective associated light source such that light emitted from the latter enters the respective optical element (6, 7) through the light-entry surface and propagates within it and exits the optical element (6, 7) through the light-emission surface, wherein at least the at least one further optical element (6, 7) has a total internal reflection surface at which at least a part, in particular a predominant part, of the light propagating within it is totally reflected before it reaches the light-emission surface, wherein in particular the at least one optical element (6, 7) has a total internal reflection surface at which at least a part of the light propagating within it is totally reflected before it reaches the light-emission surface, wherein in the further optical element (6,7) a larger part of the light propagating within it is totally reflected before it reaches the light-emitting surface than in the optical element (6, 7) and / or the total reflection surface of the further optical element (6, 7) extends over a larger angle around a principal emission direction of the associated light source than the total reflection surface of the optical element (6, 7). [16] Wall light (1) according to any one of the preceding claims, characterized bythat the wall light (1) has an adjustment device by which the position of the light source arrangement and / or the further light source arrangement can be changed while remaining unchanged in an interior space of the housing, in particular the light source part (2), and fixed relative to it, wherein in particular a change in the position of the light source produced by the adjustment device allows a light emission angle to be changed, over which the wall light (1) emits all such light originating from the light source arrangement or further light source arrangement, wherein in particular the adjustment device is accessible from the outside in the operating state of the wall light (1). [17] Wall lamp (1) according to one of the preceding claims, characterized by, that each cover (4, 8) and / or further cover (4, 8) is associated with a aperture (60, 70), in particular a reflector aperture, which covers a horizontal section (20) of the cover (4, 8) or further cover (4, 8) and which has an opening that is aligned with the light source arrangement or further light source arrangement. [18] Set comprising several different wall lights (1) according to any of the preceding claims, characterized by, that a first of the wall lights (1) has the same light source arrangement as a second of the wall lights (1) and has a different cover (4, 8) than the second of the wall lights (1), wherein due to the different covers (4, 8) the first and second wall lights (1) each have a different light emission characteristic, wherein in particular the second wall light (1) emits at least 5%, and in particular at least 10%, of the light emitted by it into its surroundings at an angle relative to the vertical plane which is greater than a maximum emission angle of the first wall light (1) relative to the vertical plane.

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