EP2020562B1 - Wall mountable lighting apparatus - Google Patents

Description

The invention relates to a wall lamp with a housing intended for receiving the electrical components and at least one light-transmitting element attached to the housing, wherein at least one in particular centrally located light exit opening is provided at least in the top wall or the bottom wall of the housing and in the interior of the housing as a light source on at least a carrier surface a plurality of LED elements are arranged such that a directed light beam is generated.

A wall lamp of this kind is from the GB 2419935 known. This known lamp is intended to be installed in a window sill, in which a speaking recess is provided for receiving the lamp housing. The light emitted by the light illuminates the area above the window sill.

From the DE 30 22 974 A1 a lighting device for pedestrian crossings is known which comprises a luminaire arrangement, by means of which a group of separate individual, and substantially parallel limited or only a small opening angle exhibiting rays can be generated.

From the patent EP 0 890 059 B1 a luminaire with a housing having a light exit window is known, wherein housed in the housing at least one illumination module for illuminating an object and the lighting module comprises a light source and optical means. The lighting module has a set of lighting units, each having an optical system, wherein the lighting units illuminate portions of the respective object in operation. In this case, each lighting unit comprises at least one LED chip, which cooperates with the optical system, which comprises a primary and a secondary optical system.

The object of the invention is to provide a certain for equipping with LED's or compact fluorescent lamps wall lamp, which provides a multiple function in terms of achievable light emission and in particular with respect to different areas to be illuminated in a structurally simple structure.

This object is achieved according to the invention for use as a surface-mounted luminaire essentially in that the housing has the shape of a flat square with rectangular top and bottom walls and preferably square end walls, that associated with the front of the housing a flat, parallel to the front wall of the housing Luminous surface is provided, which consists of opal glass or a light-effective plastic material, and that the directional light beam between the wall and luminous surface is generated on the one hand ceiling and / or bottom side causes area lighting and on the other hand, starting from the respective light exit opening widens so that each luminous area (6) is located in the grazing light region of the light beam.

By the front of the housing associated with the flat, translucent luminous surface is laterally and upwardly open between this luminous surface and the wall to which the lamp is attached Lichtführungs- and reflection space created by the outgoing from the housing focused light beam is passed, wherein the opening angle of the light beam is selected so that the luminous surface and its opposite wall are located in the grazing light range of the light beam and thus reflected or scattered light on the wall is used in addition to the surface brightening of the illuminated area.

In addition to a desired wall or Fassadenakzentuierung is provided by the Streiflichtbeaufschlagung and the resulting light reflections due to the luminance achieved clearly emerging scattered light area, while the focused light beam, if it is directed upward, causes ceiling lighting and, if he down is directed, for example, leads to the clear visualization of a traffic route. The corresponding design of the respective optimum light beam can be achieved by selecting the focusing optics associated with the LEDs. Likewise, it is easily possible to specify a respectively desired monochromatic light color by selecting the LED's.

For certain applications, it is advantageous to be able to specify the main direction of the light beam generated in a certain angular range, and for this purpose, the support surface for the LED elements is adjustable or pivotally mounted, wherein the focusing optics join the adjustment or pivoting movement.

If a plurality of light exit openings are provided next to one another in the elongate housing, the support surfaces assigned to these different light exit openings are preferably designed to be adjustable independently of one another so that the respective required overall beam can be formed from individual beam bundles.

According to a special embodiment, at least one light outlet opening corresponding to a cover wall side light exit opening with associated light source is provided in the bottom wall of the housing. This embodiment variant is particularly suitable for those cases in which, in addition to the soft light output achieved via the luminous area, a pronounced illumination of the floor area is desired. In this case, the major axes of the upward light beam and the downward light beam may be selected differently.

For the purpose of achieving high quality aesthetics, the width of each luminous area is chosen to be equal to the longitudinal extent of the housing, and the housing or a corresponding housing top wall forms a clearly accentuated boundary of the illuminated, translucent viewing area.

The front luminous surface opposite can also be provided on the wall side fixed to the housing lighting and reflection surface in particular.

According to a preferred embodiment of the invention, the housing comprises a base plate for holding all functional components, a substantially U-shaped profile in cross-section with at least one provided in a free leg light exit opening and an outside lying mounting surface on the bottom part of the U-profile for a luminous surface, and lateral support wall parts.

The respective surface carrying the LED elements with associated optics is fastened to the base plate via a holder which is preferably formed from stamped sheet metal parts, wherein the carrier surfaces for the LEDs with their associated optics are screwed to the holder in an adjustable manner.

In order to create a cuboid sealed to the outside, in which the functional elements are located, the base plate, the profile part and the lateral support wall parts are screwed together with the interposition of a seal which is in particular formed in one piece.

By this multi-part design, it is possible to combine the entire lamp to two main units, namely to a first main unit with all functional components bearing and wall mounting base plate on the one hand, and to a bolted to the base plate on the side cover second main unit, which also carries respective luminous surface. After assembly of the two main units to cover the lamp side covers are attached via suitable snap-in connections.

Further advantageous features and embodiments of the invention are specified in the subclaims.

Fig. 1

eine schematisch dargestellte, perspektivische Schrägansicht einer Ausführungsform einer erfindungsgemäßen Leuchte,

Fig. 2

eine perspektivische Schrägansicht einer weiteren Ausgestaltung der Erfindung ohne seitliche Abdeckkappen und ohne Sichtflächenabdeckung des Befestigungsbereichs der Leuchtfläche,

Fig. 3

eine Detaildarstellung einer Ausführungsform einer Halterung für die LED-Elemente mit zugehöriger Optik, und

Fig. 4

eine Explosionsdarstellung einer bevorzugten Ausführungsform der Erfindung unter Verwendung der Halterung nach Fig. 3.

Embodiments of the invention are described below with reference to the drawing; in this shows:

Fig. 1

a schematically illustrated perspective oblique view of an embodiment of a lamp according to the invention,

Fig. 2

an oblique perspective view of another embodiment of the invention without side caps and without visible surface coverage of the mounting portion of the luminous surface,

Fig. 3

a detailed view of an embodiment of a holder for the LED elements with associated optics, and

Fig. 4

an exploded view of a preferred embodiment of the invention using the holder according to Fig. 3 ,

The Fig. 1 shows a cuboid housing 1 with a rectangular upper cover wall 2, a corresponding bottom wall and preferably approximately square end walls. 4

On the front side, a rectangular light-emitting surface 6 consisting of translucent and, in particular, scattering material is fastened to this housing and has a marking 10, such as a light-emitting diode. a house number, or in which a corresponding license plate can be integrated.

In the middle of the cover wall 2 of the housing 1, a circular light exit opening 5 is provided, below which there is a light source in the form of a plurality of LED elements mounted on a support surface with associated focusing optics. This light source is designed such that emerges from the light exit opening 5, a directed light beam whose opening angle is selected so that the central beam in the Substantially between luminous surface 6 and wall extends, however, both the luminous surface 6 and the luminous surface 6 opposite wall are located in the grazing light range of this beam, whereby the luminous surface 6 is illuminated by diffused light.

Instead of an opal luminous area 6, it is also possible to use a luminous area constructed in multiple layers. Such a layer structure may consist of a plastic plate formed on one side as a prism surface, wherein on the prism side a thin glass cover plate and on the back of a scattering film may be provided.

In order to increase the reflection or scattering effect, which is already provided by the wall opposite the luminous surface, it is possible to provide a wall surface with a surface adapted to the luminous surface 6 and fastened to the housing, this surface preferably being designed to be reflective.

Instead of a single light exit opening at the top or at the bottom of the housing a plurality of juxtaposed light exit openings can be used with appropriate extension of the housing. In this case, the LED surfaces associated carrier surfaces are individually associated with each light exit opening, and they can be adjusted individually in their inclination. In this way, the shape of the overall jet formed can be advantageously influenced.

The perspective oblique view Fig. 2 shows a preferred embodiment of a lamp according to the invention, in this representation, the light surface acted upon by grazing light 6 is provided with a house number representation 10 for exemplary illustration of possible applications of the lamp.

The housing 1 of the luminaire comprises - as will be explained in detail - a base plate 10, which is combined with a U-shaped profile part 21 and lateral support wall parts 32 to a sealed to the outside, the functional elements receiving cuboid.

The lateral support wall parts 32 are connected to the U-profile part 31 and have outwardly angled flange parts 37, via which the support wall parts 32 and thus also the luminous surface 7 supporting U-profile part 31 with the base plate 30 are screwed.

Fig. 3 shows an embodiment of a particular made of sheet metal stampings holder 33 for functional components, in particular for the LED elements 8 with associated optics. This holder 33 is attached to the base plate 30, in particular screwed.

In addition to the inclusion of possibly required electronic components in a housing part and the inclusion of terminals 41 allows this holder 33 on the support surfaces 7, especially with respect to the position and the inclination adjustable attachment of the LED elements 8. For this purpose, the respective support surface 7 on the one hand a plurality of distributed over the surface mounting holes for fixing the LED elements 8 and their support provided and connected to another over an angled region with a bracket 34, via slot openings or curved openings 40, which after loosening the corresponding screws the respectively desired Allow adjustment of the inclinations of the support surfaces 7.

The exploded view after Fig. 4 shows the overall structure of a luminaire Fig. 2 ,

The already explained base plate 30, which is provided with holes for wall mounting, serves to accommodate the basis of Fig. 3 already explained bracket 33 for all functional components. In the region of its upper and lower edges, the base plate 30 is provided with sealing portions 36, which complement together with the approximately U-shaped further sealing portions 36 to the overall seal, which is preferably carried out in one piece.

The U-profile part 31, which is preferably an extrusion, has in its top wall 2 and its bottom wall 3 each have a light exit opening 5 and 9, which are sealed by means of associated translucent covers 35. The outer surface of the bottom wall of the profile part 31 is a mounting surface 29 for the respective luminous surface 6, for which purpose a corresponding groove for receiving nuts is provided in the profile part, which serve for Schraubbefestigung the luminous surface 6. The serving for fastening area of the luminous surface 6 is covered by a visible surface 11.

The U-profile part 31 is screwed to lateral support wall parts 32, with the interposition of the seals 36. The lateral support wall parts 32 have outwardly angled flange 37, over which they are screwed to the base plate 30. A sealing plug 43 is provided for the opening provided in the base plate for a line feed.

By the described design of the structure of the luminaire can be created by means of pre-assembly, two main components, namely a first main unit in the form of all functional units supporting base plate 21 and a second main unit of which the luminous surface. 6 supporting U-profile part 31 is formed with lateral support wall parts 32. The assembly of these two units with the interposition of the seal 36 is effected by screwing the support wall parts 32 with the base plate 30, whereupon lateral mounting caps 38 are fixed on the support wall parts 32 via latching elements 39 to complete the assembly.

LIST OF REFERENCE NUMBERS

1

casing

2

top wall

3

bottom wall

4

bulkhead

5

Light exit opening at the top

6

light area

7

support surface

8th

LED elements

9

Light exit opening below

10

Mark

11

viewing area

12

stop surface

13

corner

14

Lichtleitwand

15

first bend

16

second bend

17

Cover

18

opening end of light guide wall

19

ballast

20

Fluorescent Lamp

21

mounting plate

22

poetry

23

translucent plate

24

hook

25

eccentric closure

26

unit

27

side walls

28

housing slot

29

mounting surface

30

baseplate

31

Channel member

32

Support wall parts

33

bracket

34

headband

35

cover

36

poetry

37

flange

38

cap

39

locking element

40

Long hole

41

terminal

42

Plug

43

top wall

44

wall section

Claims (12)

1. A wall luminaire having a housing (1) intended for the reception of the electrical components and having at least one light permeable element mounted to the housing, wherein at least one light exit opening (5), in particular a centrally disposed light exit opening, is provided at least in the top wall (2) or in the base wall (3) of the housing and a plurality of LED elements (8) are arranged as the light source on at least one carrier surface (7) in the inner space of the housing (1) such that a directed light beam is generated characterized in that
   the housing (1) has the shape of a flat parallelepiped with rectangular top and base walls (2, 3) and preferably square end-face walls (4);
   in that a planar lighting surface (6) is provided which is associated with the front side of the housing (1), which extends parallel to the front wall of the housing (1) and which is made of opal glass or of a light-effective plastic material; and
   in that the directed light beam is generated between the wall and the lighting surface (6), which light beam on the one hand, effects a regional illumination at the top side and/or base side and, on the other hand, starting from the respective light exit opening (5), expands such that each lighting surface (6) is disposed in the sidelight region of the light beam.
2. A wall luminaire in accordance with claim 1,
   characterized in that
   at least one light exit opening (9), in particular a coaxial light exit opening, with an associated light source and corresponding to the light exit opening (5) at the top side is provided in the base wall (3) of the housing (1).
3. A wall luminaire in accordance with claim 2,
   characterized in that
   a respective lighting surface (6) is associated with the upwardly and downwardly directed light sources and the housing (1) is disposed centrally symmetrically between the two identical lighting surfaces (6).
4. A wall luminaire in accordance with any one of the preceding claims,
   characterized in that
   the width of each lighting surface (6) is equal to the longitudinal extent of the housing (1) and the housing (1) or a corresponding housing top wall forms a visible surface (11) bounding the respective lighting surface (6).
5. A wall luminaire in accordance with any one of the preceding claims,
   characterized in that
   the light exit openings (5) are circular or elongated.
6. A wall luminaire in accordance with any one of the preceding claims,
   characterized in that
   a surface likewise fixed to the housing (1) is provided at the wall side opposite the lighting surface (6) and has reflective and/or scattering properties.
7. A luminaire in accordance with any one of the preceding claims,
   characterized in that
   the housing (1) includes a base plate (30) for the mounting of all functional components, a profile section (31) which is essentially U-shaped in cross-section and has at least one light exit opening (5, 9) and an outwardly disposed mounting surface (29) for a lighting surface (6) as well as lateral support wall parts (32).
8. A luminaire in accordance with claim 7,
   characterized in that
   a mount (33), in particular shaped from stamped sheet metal parts, for functional components and at least one carrier surface (7) for LED elements (8) with associated optical system is mounted to the base plate (30).
9. A luminaire in accordance with claim 8,
   characterized in that
   the carrier surfaces (7) for the LEDs (8) with associated optical system are fastened to a holding hoop (34) in a manner adjustable with respect to position and inclination via elongate and/or slanted hole connections.
10. A luminaire in accordance with claim 7,
    characterized in that
    the light exit openings (5, 9) formed in the section part (31) are sealingly closed by means of a light permeable cover (35).
11. A luminaire in accordance with claim 10,
    characterized in that
    the base plate (30) can be connected to the section part (31) via the lateral support wall parts (32) with the interposition of a seal (36), which is in particular made in one part, to form an outwardly sealed parallelepiped.
12. A luminaire in accordance with any one of the claims 7 to 11,
    characterized in that
    the support wall parts (32) which can be screwed to the U-section part (31) at the end-face side can be mounted to the base plate (30) via angled flange parts (37) and have holding elements for the latching of lateral masking caps (38).

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