DE102008009814A1 - Light, especially downlight - Google Patents

Abstract

The invention relates to a luminaire, in particular a downlight, with a housing (2) and a reflector (10) accommodated by the housing (2), the luminaire having a light exit area (12) passing through the reflector (10) into a main light exit area (14) and a subsequent secondary light exit region (16) is divided. Furthermore, the luminaire has a first luminous means (4), which is arranged in the housing (2) such that light emitted by the first luminous means (4) is emitted predominantly via the main light exit region (14), as well as a further luminous means (6). which is arranged in the housing so that light emitted by the further luminous means (4) is emitted predominantly via the secondary light exit region (16). In such a luminaire, therefore, the light path taken by the light of the first luminous means (4) may overlap with the light path of the light of the further luminous means (6). As a result, the lamp is suitable both for a particularly attractive accent lighting and for the production of high-quality general lighting.

Description

The The invention relates to a lamp, in particular a downlight, with a housing, and a received by the housing Reflector.

Such a lamp in the form of a downlight is from the German patent application DE 10 2004 042 802 A1 known. The light exit area of this luminaire is covered by a transparent pane.

Another generic lamp is from the document EP 1 043 542 A2 known. In this lamp, an additional light source is provided to improve the illumination or the light image. With this additional light source, an accent light can be generated in an area around the reflector.

Of the The present invention is based on the object, a generic Luminaire to specify the possibilities of lighting design continue to be improved.

These Task is according to the invention with in the independent claim mentioned lamp solved. Particular embodiments of the invention are in the dependent Claims specified.

According to the Invention is a lamp, in particular a downlight, with a Housing, and one of the housing received Reflector provided; the luminaire furthermore has a light exit area up through the reflector into a main light exit area and a subsequent secondary light exit area is divided. Furthermore, the lamp has a first light source, which is arranged in the housing, that of the first Bulb emitted light predominantly over the main light exit area is radiated, as well as another Illuminant, which is arranged in the housing, that light emitted by the further illuminant predominantly via the light source Nebenlichtaustrittsbereich is radiated.

at Such a light can thus be the light path of the Light of the first bulb is taken, with the light path of overlap the light of the other light source. hereby the lamp is suitable both for a particularly appealing Accent lighting, as well as for the generation of a qualitative high quality general lighting.

It can therefore be provided in particular that the first light source is arranged in the housing that of the first lighting means radiated light to a lesser extent over the Nebenlichtaustrittsbereich is radiated. It can also be provided be that the further light source is arranged so that of the light emitted to the further light source to a lesser Part also emitted over the main light exit area becomes.

Advantageous the lamp also has a transparent disc, which the Secondary light exit area to the room outside the luminaire towards at least partially, preferably completely, so that light emitted by the further luminous means at least partially radiated through the glass. By using the Slice can the radiation of the lamp through the secondary light exit area be influenced particularly easily. Example meadow can the disc for this purpose in the area with which they the secondary light exit area covering, frosted and / or perforated, so for example as Perforated sheet be formed.

Advantageous the disc is arranged so that they continue to the main light exit area covering the room outside the luminaire. It can the disc in the area with which they are the main light exit area covering, for example, be crystal clear and / or perforated.

In the area, with which the disc the Nebenlichtaustrittsbereich covers, so the disc can for example be frosted and while in the area with which it covers the main light exit area, crystal clear. It can still have a transparent, crystal clear cover may be provided which the disc to the room outside the lamp covers.

Advantageous are the first light source and the other light source at least essentially in one plane, for example on a ceiling wall of the Housing arranged. It can be provided that the Light exit area is located in a first level and the housing one, parallel to the first plane, second Level, which is not interspersed by the reflector, wherein the first lighting means and / or the further lighting means in the second level are arranged. In this way, the overlap the light paths are particularly easily effected.

Farther can be advantageously provided that the first light source and the other bulbs are arranged on a circuit board. Advantageous is the board thermally, preferably immediately, with a Heatsink connected, for example, at one downwardly facing outer surface of the heat sink arranged.

The reflector has advantageously at its in nenseite and / or on its outside a white surface, such as a white coating on.

the The first light source is advantageously an optical element for steering of light emitted from the first light source, for example in the direction of a main lighting direction of the lamp assigned.

The The first illuminant advantageously comprises at least one high-power light-emitting diode and / or a halogen lamp and / or a compact fluorescent lamp, wherein the first illuminant is preferably white light can radiate.

The further lighting means advantageously has at least one light-emitting diode or a group of light-emitting diodes, for example in RGB arrangement, on, wherein the further illuminant preferably emit colored light can.

The Invention will be described below with reference to an embodiment and explained in more detail with reference to the drawings. Show it:

1 a first perspective view of a lamp according to an embodiment,

2 a second perspective view of the lamp according to the embodiment,

3 a perspective sectional view through the lamp according to the embodiment,

4 a representation like 3 , but with removed board,

5 a sketch that shows a schematic cross section through the light to illustrate the spatial relationships with respect to the reflector within the lamp, and

6 a view of a lamp according to the invention from below.

In the 1 to 4 an embodiment of a lamp according to the invention is shown. For easier readability, the following are the in 1 using the directional labels "up" and "down" indicated by arrows. The direction in which the light output of the luminaire is mainly provided is referred to as "bottom", the direction opposite this direction as "top". In 4 the main lighting direction of the luminaire is sketched with an arrow R, which is thus directed to "down".

According to the Embodiment is at the lamp to a downlight. The luminaire can be designed, for example, as a recessed ceiling luminaire be.

According to the embodiment, the lamp has a housing 2 on, for example, may be designed substantially pot-shaped, so that the housing 2 a sidewall area 3 and one - in 4 designated - ceiling wall 8th having.

In the exemplary embodiment, it is provided that the luminaire also has a heat sink 50 which preferably above the housing 2 is arranged. In the embodiment, it is provided that the ceiling wall 8th directly through a lower boundary wall 52 of the heat sink 50 is formed.

At the lower edge of the sidewall area 3 the lamp has a light exit area 12 through, through which the light exit of the lamp is provided. In the embodiment, the light exit area 12 from the bottom of the sidewall area 3 of the housing 2 limited and lies with this at least substantially in a - 5 designated - first level E1. The housing 2 encloses an inner space in the embodiment, the downwards through the light exit area 12 is limited and one in 5 sketched indicated clear height H has.

Furthermore, in the embodiment, the shape of the lower edge of the side wall portion 3 and thus also the outer shape of the light exit area 12 rectangular, for example square; However, it can also be chosen any other form, for example, round.

In the case 2 is a reflector 10 arranged. In the embodiment, the reflector 10 an inner surface and an outer surface, wherein the inner surface and / or the outer surface are coated white. The reflector 10 also has a bottom border 30 and an upper edge 32 on; Both edges can be used 30 . 32 be circular and the top edge 30 have a smaller diameter than the lower edge 32 , The reflector 10 can be designed rotationally symmetrical and, for example, parabolic shaped, so that its axis of symmetry coincides with the main illumination direction R of the lamp.

Like from the 3 . 4 and 5 can be seen, is the vertical extent of the reflector 10 less than the vertical extent of the clear height H of the housing 2 enclosed space. Here is the reflector 10 such in the housing 2 arranged that its upper edge 32 not up to the ceiling 8th ranges, but is lower than the clear height H. It can, for example vorgese be that the reflector 10 such in the housing 2 is arranged so that it is up to a height h above the light exit area 12 which lies within that height range, the bottom by the half and above by nine-tenths of the clear height H of the housing 2 circumscribed space is limited.

In the sketch of the 5 These relationships are shown schematically and it is the height of the sidewall area 3 approximately equated with the clear height H of the housing 2 circumscribed space. The height of the upper edge 32 of the reflector is denoted by h, so that, for example, 0.50 ≦ h / H ≦ 0.90 can be provided for the relationship of these two heights.

As continues in 5 sketched, is the reflector 10 such in the housing 2 arranged that a "reflector outer region" A and a "reflector inner region" I is described by him, these two spaces A, I upwards to the height of the upper edge 32 of the reflector 10 extend and down to the level of the lower edge 30 of the reflector 10 , In this case, it can be provided in particular advantageous that the lower edge 30 of the reflector 10 at least substantially in a plane with the light exit area 12 is, that is, for example, in the above briefly mentioned first level E1.

The reflector outer region A is toward a side of an inner wall portion of the sidewall portion 3 of the housing 2 limited and to another side through the outer wall of the reflector 10 , The reflector inner region I is to the side only through the inner wall of the reflector 10 limited.

The light exit area 12 is through the reflector 10 , in particular by the lower edge 30 of the reflector 10 in a main light exit area 14 and a subsequent secondary light exit area 16 divided. In this case, the main light exit area 14 from the bottom edge 30 of the reflector 10 limited and thus also be circular. As in the embodiment, the lower edge of the side wall portion 3 can be rectangular, for example, square, can therefore also the outer edge of the secondary light exit area 14 rectangular or square and its inner edge be circular.

It is not mandatory for the invention that the lower edge 30 of the reflector 10 and the light exit area 12 lie exactly in one plane. It can certainly be provided that the lower edge 30 of the reflector 10 lies in a plane opposite to the plane of the light exit area 12 something, for example, up to 1/10 H is offset up or down. However, it is advantageous for the purposes of the invention, when the lower edge 30 of the reflector 10 at least substantially in a plane with the outer edge of the light exit area 12 is located.

Furthermore, the lamp has a first light source 4 on, so in the case 2 is arranged that of the first light source 4 radiated light predominantly over the main light exit area 14 is emitted. For this purpose, the first light source 4 for example, above and preferably centrally with respect to the upper edge 32 of the reflector 10 be arranged. It can be provided that the first light source 4 It is arranged in a region that is characterized by a vertical projection of the upper edge 32 of the reflector 10 is enclosed.

It may preferably be provided that of the first lighting means 4 radiated light is white or unfarbiges light.

The first light source 4 For example, at least one light-emitting diode, for example a high-power light-emitting diode or a plurality of such light-emitting diodes, can comprise. In the 3 and 4 is an example of a group of six high-power diodes sketched together the first light source 4 form, these light-emitting diodes in a circle and thereby at a level, ie all at the same height above the light exit area 12 are arranged. As in 5 indicated, for example, can be provided that the first light source 4 is arranged in a second, parallel to the first plane E1 plane E2, which is above the upper edge 32 of the reflector 10 runs, so not from the reflector 10 is interspersed.

In this case, it can furthermore be provided that each light-emitting diode is associated with an optical element (not expressly shown in the figures), by which light is directed by the respective light-emitting diode in the direction of the main illumination direction R. With regard to the vertical extension, it may then be provided that the optical element (s) is or are arranged such that between the upper edge 32 of the reflector 10 and the optical element (s) is at a vertical distance that is at least 0.05 times or 0.1 times the clear height H, for example.

At the first light source 4 however, it may also be, for example, a halogen lamp and / or a compact fluorescent lamp.

Furthermore, the lamp has another bulb 6 on, so in the case 2 is is that of the other bulbs 6 radiated light predominantly over the secondary light exit area 16 is emitted. The further light source 6 especially so inside the case 2 be arranged that of the other bulbs 6 radiated light mainly in the reflector outer space A irradiates.

Preferably, it can be provided that the further light source 6 has several locally separate light sources, which can all be controlled together. The light sources can be given for example in the form of light-emitting diodes or groups of light-emitting diodes, for example, by light-emitting diodes known per se in RGB arrangement, wherein the light sources preferably in the housing 2 are arranged to be seen from below against the main illumination direction R in the lamp outside the upper edge 32 of the reflector 10 in other words, outside the vertical projection of the top edge 32 of the reflector 10 are arranged. Advantageously, the light sources are arranged along a ring shape, which is located around the upper edge 32 of the reflector 10 extends around. The light sources can again be above the level of the upper edge 32 of the reflector 10 be arranged, preferably in a plane with the first lighting means 4 , so for example in the in 5 schematically outlined second level E2.

It can preferably be provided that of the other bulbs 6 radiated light is colored light.

For example, it can be provided that the ceiling wall 8th the housing is substantially rectangular, for example square - or square with bevelled corners, as well as from the 4 and 5 visible - and thereby the other bulbs 6 has four light sources, which are each arranged in one of the corner regions. Of course, another form of ceiling wall can also be used 8th be provided, in which case advantageously the number of light sources with the number of corners correlated.

Particularly advantageous in terms of construction or installation of the lamp is when the first light source 6 and the other bulbs 4 on a common board 40 are arranged. The board 40 can preferably directly on the ceiling wall 8th of the housing 2 be arranged as provided in this 3 is indicated. In 4 is the board 40 shown in taken out state.

Advantageously, the board 40 - as in 5 shown - a border shape with that of the ceiling wall 8th corresponds, so the largest possible area of the ceiling wall 8th covers. If the ceiling wall 8th through a bottom of the heat sink 50 is formed, this is in terms of the required dissipation of heat that arises in the operation of the lamps in general, particularly favorable.

Advantageously, it can furthermore be provided that the first lighting means 4 and the other bulbs 6 can be switched independently of each other and / or dimmed in a conventional manner.

The lamp has, according to the embodiment shown here, a disc 18 on, which is at least partially, the embodiment in its entire area is transparent and the light exit area 12 , so the main light exit area 14 and the secondary light exit area 16 towards the room outside the luminaire - ie down to - covers. In the area of the lower edge of the sidewall area 3 can fasteners for the disc 18 be provided. Regarding 5 Thus, the disc can be arranged in the first plane E1. As already mentioned above, it is advantageously provided that the lower edge of the side wall region 3 and the bottom edge 30 of the reflector 10 lying substantially in one plane, namely in the plane E2. In essence, it should be expressed that in this case the thickness of the disc 18 , as well as fasteners with which the disc 18 relative to the sidewall area 3 is held, may be neglected.

In the area where the disc 18 the secondary light exit area 16 covering, the disc can 18 be frosted, allowing light to pass through the secondary light exit area 16 the light leaves, appears diffuse. In this way, the generation of a so-called accent light can be effected. It can also be provided that in this area the disc 18 otherwise designed to influence light, for example, is perforated, that is designed as a perforated plate.

In the area where the disc 18 the main light exit area 14 covering, the disc can 18 be crystal clear, so that light that leaves the light through this area, through the glass 18 weakened as little as possible. However, it can also turn in this area the disc 18 otherwise be designed to influence light, for example, perforated, so formed as a perforated plate.

It can also be provided that the disc 18 in the area of the main light exit area 14 is provided completely clear or with an opening corresponding to the shape and only in the area of the secondary light exit area 16 has a light influencing structure and also a (not shown in the figures) further transparent element, for example in the form of another disc, is provided, with which the (first mentioned) disc 18 is covered from below.

The luminaire according to the exemplary embodiment illustrated here can preferably be operated in three different ways: If the first luminous means 4 , but not the other bulbs 6 is activated, ie emits light, light is predominantly on the main light exit area 14 issued; the outside of the reflector 10 lying outside areas, as the secondary light exit area 16 , appears through the - for example, white - light but lightened.

If the other bulbs 6 , but not the first light source 4 is activated, the secondary light exit area appears 16 lightened, for example, strongly colored, but also a smaller proportion of light over the main light exit area 14 is delivered. If the transparent disc 18 (or optionally the further transparent element) is slightly dull and / or the reflector 10 white coated, this can give the impression that the entire disc 18 lights up in color, whereby the color or the colors in the corner areas appear or appear to be more intensive than in the main light exit area 14 ,

If the first and the further illuminants are activated, the corner areas of the light exit area are illuminated 12 correspondingly colored and over the main light exit area 14 predominantly white light can be emitted for general lighting.

If the bulbs are dimmed independently can, the light effects can still in particularly appealing way further manipulated.

2

casing

3

Sidewall region of the housing

4

first Lamp

6

additional Lamp

8th

ceiling wall of the housing

10

reflector

12

Light output region

14

Main light emission area

16

Secondary emergent area

18

transparent disc

30

lower Edge of the reflector

32

upper Edge of the reflector

40

circuit board

50

heatsink

52

to bottom facing outer surface of the heat sink

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102004042802 A1 [0002]
• - EP 1043542 A2 [0003]

Claims (15)

Luminaire, in particular downlight, with a housing ( 2 ), and one of the housing ( 2 ) received reflector ( 10 ), the luminaire having a light exit area ( 12 ), which passes through the reflector ( 10 ) into a main light exit area ( 14 ) and an adjoining secondary light exit area ( 16 ), the luminaire further comprising a first illuminant ( 4 ), which in the housing ( 2 ) is arranged, that of the first lighting means ( 4 ) radiated light predominantly over the main light exit area ( 14 ) and wherein the luminaire is another illuminant ( 6 ), which is arranged in the housing, that of the further lighting means ( 4 ) radiated light predominantly via the secondary light exit region ( 16 ) is radiated. Luminaire according to Claim 1, in which the first lighting means ( 4 ) so in the housing ( 2 ) is arranged, that of the first lighting means ( 4 ) radiated light to a lesser extent on the secondary light exit area ( 16 ) is radiated and / or the other bulbs ( 6 ) so in the housing ( 2 ) is arranged, that of the further lighting means ( 6 ) radiated light to a lesser extent over the main light exit area ( 14 ) is irradiated. Luminaire according to claim 1 or 2, further comprising a transparent pane ( 18 ), the secondary light exit area ( 16 ) to the space outside the luminaire at least partially, preferably completely, so that from the further illuminant ( 6 ) radiated light at least partially through the disc ( 18 ) is radiated. Luminaire according to Claim 3, in which the pane ( 18 ) in the area with which it illuminates the secondary light exit area ( 16 ) covers, matted and / or perforated. Luminaire according to claim 3 or 4, wherein the pane ( 18 ) continue the main light exit area ( 14 ) to the room outside the luminaire. Luminaire according to claim 5, wherein the pane ( 18 ) in the area with which they illuminate the main light exit area ( 14 ) covers, is crystal clear and / or perforated. Luminaire according to claim 3, wherein the pane ( 18 ) in the area with which it illuminates the secondary light exit area ( 16 ), is frosted and in the area with which it is the main light exit area ( 16 ), is crystal clear, and further a transparent, crystal-clear cover is arranged so that it the disc ( 14 ) to the room outside the luminaire. Luminaire according to one of the preceding claims, in which the first luminous means ( 4 ) and the further light source ( 6 ) substantially in one plane (E2), for example on a ceiling wall ( 8th ) of the housing ( 2 ) is arranged. Luminaire according to one of the preceding claims, wherein the light exit area ( 12 ) is arranged in a first plane (E1) and the housing ( 2 ) has a second plane (E2) which is parallel to the first plane (E1) and which is not separated from the reflector (E1). 10 ), wherein the first light source ( 4 ) and / or the further illuminant ( 6 ) are arranged in the second plane (E2). Luminaire according to Claim 8 or 9, in which the first lighting means ( 4 ) and the further light source ( 6 ) on a board ( 40 ) are arranged. Luminaire according to Claim 10, in which the circuit board ( 40 ) thermally, preferably directly, with a heat sink ( 50 ), for example, on a downwardly facing outer surface ( 52 ) of the heat sink ( 50 ) is arranged. Luminaire according to one of the preceding claims, wherein the reflector ( 10 ) has on its inside and / or on its outside a white surface. Luminaire according to one of the preceding claims, in which the first luminous means ( 4 ) an optical element for the steering of the first light source ( 4 ) emitted light, for example in the direction of a main illumination direction (R) of the luminaire, is assigned. Luminaire according to one of the preceding claims, in which the first luminous means ( 4 ) at least one high-performance light-emitting diode and / or a halogen lamp and / or a compact fluorescent lamp, wherein the first lighting means ( 4 ) may preferably emit white light. Luminaire according to one of the preceding claims, in which the further luminous means ( 6 ) has at least one light-emitting diode or a group of light emitting diodes, for example in RGB arrangement, wherein the further light source ( 6 ) can preferably emit colored light.