EP0802368B1 - Luminaire comprising a lamp, particularly one of small volume - Google Patents

Abstract

The light (l) includes an especially compact lamp (2) and a main reflector (5) which is preferably arranged for the emission of a narrow light beam. An additional reflector (31) is arranged in at least a part of the side extent of the main reflector. The main reflector consists of transparent material and is coated with a reflection layer (23) at its outer or inner side. The additional reflector is arranged at the outer side of the main reflector and no reflection layer is provided on the main reflector in the area of the additional reflector.

Description

The invention relates to a lamp according to the preamble of claim 1 or 8.

There are lights that are designed so that they are light with a relative emit little scatter. Such lights are therefore suitable, relatively illuminate small areas relatively brightly. Since such lights in most cases vertical position with the radiation directed downwards generally referred to in technical terms as "downlights".

A downlight mainly emits the light steeply downwards, so that above one No light leaves the luminaire at an angle of at least 30 ° with respect to the horizontal, or hardly any light leaves the lamp. This is for people in the illuminated room direct glare from the mostly very bright lamps avoided.

If such a lamp is installed near a wall, the upper part of the remains Wall darkened due to glare control, while the lower part of the wall was illuminated a corresponding area of the room is illuminated. To this effect to avoid and the whole wall or the entire height range about evenly to brighten, it has already been proposed, in such a lamp on the An additional reflector on the wall or the side opposite the aforementioned area, namely a so-called wall washer reflector - to be installed. With such an installation two versions possible.

In a first, shown in the accompanying Fig. 1, the Mount the additional reflector B inside the main reflector A of lamp C. Thereby the free cross section of the light exit opening D is reduced, which on the one hand leads to a Reduction in efficiency leads. On the other hand, the downsized is free Cross section with a different from the normal appearance Appearance linked, which lead to the subjective disturbance of the sense of space can. That the appearance of the lamp is deteriorated. Such a lamp is also from US 4,475,147.

In a second embodiment, shown in FIG. 2, the main reflector A is in the the wall to be illuminated or the area opposite to be illuminated Cut out the area, with the additional reflector B in the area of the cutout E is mounted outside the main reflector A. Through the opening E in the The main reflector is mechanically weakened. It also makes a additional processing step necessary, resulting in a considerable enlargement of the manufacturing costs. Such a lamp is of the type specified at the beginning generic type and also from DE 87 09 038 U.

In FR 2 192 272 there is a lamp with an at least partially made of plastic existing reflector body described, the inside or outside with a Reflective layer is coated.

From US 5 535 110 A is a lamp with a dome-shaped main reflector and an additional reflector for the lateral emission of part of the light from the lamp described. The additional reflector consists of a plastic layer, which in the associated area of the lamp is arranged on the inside of the main reflector and has circumferential step surfaces on the inside thereof reflect the light towards the relevant side.

The invention has for its object a lamp of the present type to design that at least a partial portion of the area surrounding the lamp can be illuminated without loss of stability.

This object is solved by the features of claim 1 or 8.

In both configurations according to the invention, no detail in the Main reflector in the area of the additional reflector. Irradiation of the additional reflector takes place through the material of the main reflector. This will Manufacturing costs much lower and also the main reflector is not weakened. In addition, a simple and inexpensive to manufacture construction reached.

In the embodiment according to the invention, the main reflector is preferably for the Radiation of a narrow beam set up.

The reflection layer can either be on the outside or on the inside of the main reflector be arranged. This is particularly advantageous if the transparent Main reflector body on the outside a light scattering structure, e.g. B. facets, having. Now the reflection layer is on the outside of the main reflector applied, this scattering structure comes into effect. However, if Reflection layer applied to the smooth inside of the main reflector, this creates a simple reflector with a smooth reflective layer. The scattering structure is in in this case ineffective, but with a single tool for the transparent base body two reflector types (smooth or structured).

The reflection layer can be applied in a simple and inexpensive manner, with good quality can be achieved.

The subclaims contain features that provide targeted lighting improve at least one side area, for simple, small and lead to inexpensive to manufacture construction and also improve the reflection.

Fig. 3

eine Leuchte im Vertikalschnitt;

Fig. 4 die in Fig. 3

mit X gekennzeichnete Einzelheit in vergrößerter Darstellung;

Fig. 5

eine Leuchte im vertikalen Schnitt in abgewandelter Ausgestaltung;

Fig. 6

eine erfindungsgemäße Leuchte im vertikalen Schnitt;

Fig. 7

die Einzelheit Y in Fig. 6 in vergrößerter Darstellung;

Fig. 8

eine erfindungsgemäße Leuchte im Vertikalschnitt in weiter abgewandelter Ausgestaltung;

Fig. 9

die Einzelheit Z in Fig. 8 in vergrößerter Darstellung;

Fig. 10 bis 12

besondere Ausgestaltungen und Einbaupositionen einer erfindungsgemäßen Leuchte.

The invention and further advantages which can be achieved by means of preferred exemplary embodiments and simplified drawings are explained in more detail below. It shows:

Fig. 3

a lamp in vertical section;

FIG. 4 shows the one in FIG. 3

Detail marked with X in an enlarged representation;

Fig. 5

a lamp in vertical section in a modified design;

Fig. 6

a lamp according to the invention in vertical section;

Fig. 7

the detail Y in Figure 6 in an enlarged view.

Fig. 8

a lamp according to the invention in vertical section in a further modified embodiment;

Fig. 9

the detail Z in Figure 8 in an enlarged view.

10 to 12

special configurations and installation positions of a lamp according to the invention.

The lamp 1 shown in the figures is one with a preferably small volume lamp 2, e.g. a high pressure discharge lamp, Compact fluorescent lamp, halogen lamp or the like. The cross-sectional size the light exit opening 3 of the lamp 1 is relatively small, e.g. less than 250 mm in the largest cross-sectional dimension. The shape of the light exit opening 3 round or square or elongated, e.g. be rectangular or oval. From one Corresponding cross-sectional shape can also be a housing 4 and / or Main reflector 5 of the lamp 1. In the present embodiment, the lamp is 1 designed as a recessed light. The housing can be made using individual frame pieces 6 may be formed, which bridge the main reflector 5, if necessary, and one at of the present embodiment hold the existing screen 7, which is the edge of a in Fig. 3 shown installation opening 8 of a ceiling wall 9 covered on the underside. In the In the present embodiment, an annular, in Enclosed partial housing 4a is provided, on which the main reflector 5 can be held, and which is bridged by at least one frame piece 6. On the housing 4 or on the frame pieces 6 can be indicated Holding elements 11 for the lamp 1 may be arranged on the installation opening edge the ceiling wall 9 are supported. The panel 7 can consist of individual frame parts exist or be in one piece in the circumferential direction. It can do it or its parts be integrally formed with the housing 4 or the associated frame pieces 6 or attached to these parts.

The main reflector 5 preferably has an outward at its lower edge projecting flange 12, in an annular recess 13 in the diaphragm frame is at least partially sunk and in particular sunk so deep it is arranged that the front or underside of the flange 12 with the front or Bottom of the bezel frame approximately closes. The flange 12 can on a the shoulder surface 14 forming the base of the ring recess 13 abuts.

The main reflector 5 has a dome-shaped cross-sectional shape, whereby it is preferably formed in one piece. The cross-sectional shape of the Main reflector 5 flat or conical or spherical segment-shaped radially outwards shaped inclined. At this ridge wall 15 there is a curve 16 at the bottom on, which merges into a divergent side wall 17, the conical or can be shaped like a spherical ring. The angle W with the side wall 17 of the vertical central axis 18 is relatively pointed and is approximately 5 up to 15 °, in particular about 10 °. That is, the side wall 17 is relatively steep arranged.

The lamp 2 extends through a feed-through opening 19 into the upper region of the main reflector 5 and is in this position by means of a suitable socket 21 held, which are attached to the housing 4 or to an associated frame piece 6 can. In the present embodiment, the through opening 19 and the Version 21 arranged in the upper side area of the lamp 1.

The main reflector 5 is in its ridge area by suitable holding means, e.g. Clamps or screws on the housing 4 or on an associated frame piece 6 held. The main body of the main reflector 5 consists of a transparent Material such as glass or plastic, the thickness of the peripheral wall 22 being the same can, as shown in Fig. 3. On the outside, the peripheral wall 22 has a Reflective layer 23 coated, one on the outside of the main reflector 5th located refection surface 24 forms on which the outgoing from the lamp 2 Light rays 25 are reflected. As can be seen in particular from FIG. 4, the light rays 25 when penetrating the inner surface 26 first to the Light propagation direction 27 opposite side and when exiting the Inner surface 26 broken towards the direction of propagation 27. Depending on the angle of incidence with respect to the inner surface 26 and the reflection surface 24 result from the Representation in Fig. 4 different light beam directions.

As can be seen from FIG. 4, the underside flange surface 12a is the is preferably still conically shaped at the top with which Reflective layer 23 coated.

5, with the same or comparable parts with are provided with the same reference numerals, the luminaire is an additional reflector 31 assigned, which is arranged in the lower region of the main reflector 5 or from this adjoins downwards and extends over the entire scope or only over one Part of the circumference can extend.

It is the purpose of such an additional reflector 31 that is relatively steep to change emitting lamp 1 so that at least on at least one Partial area also a side radiation and illumination of a side wall in the existing space or the lateral area of the existing space is possible. This additional and lateral direction of propagation is designated 32.

5, the additional reflector 31 is on the outside of Main reflector 5 arranged, being an outward distance of the latter has. The additional reflector 31 is vertical to the inside concave, in particular rounded concave and preferred in the horizontal adapted approximately to the circumferential shape of the main reflector 5. As shown in Fig. 5 remove, close the upper and lower areas of the inside Reflection surface 33 of the additional reflector 31 with the vertical angle W1, W2, which are about the same size. This results in a favorable resulting lateral Direction of propagation 32, which is located under the opposite lower edge of the Additional reflector 5 extends.

5, the reflection layer 23 can be on the outside or preferably be arranged on the inside 26 of the main reflector 5.

In the area of the additional reflector 31 there is none on the main reflector 5 Reflective layer 23. The dimensions of the window 34 formed in this way are approximately dimensioned equal or larger than the corresponding dimensions of the additional reflector 31, so that a required amount of light rays through the area of the window 34th transparent peripheral wall 22 of the main reflector 5 against the additional reflector 31 arrive and reflected on the reflection surface 33 in the direction of propagation 32 become.

From Fig. 5 it can clearly be seen that the reflection surfaces 24, 33 at least in lower to middle region of the additional reflector 31 with respect to the central axis 18 diverge above.

The window 34 can be easily created, e.g. by covering the inside and / or Outer surface of the main reflector 5 on the outside or inside Coating with the reflection layer 23. This preferably consists of a metallic material. The reflection layer 23 can by vapor deposition Main reflector 5 can be applied with aluminum or by chromating.

Vacuum coating methods known per se are also well suited for coating with vapor deposition, electroplating and chemical spraying processes for the metallization of materials.

6, with the same or comparable parts the same reference numerals is in contrast to the above Design of the additional reflector 31 not at an outward distance arranged by the main reflector 5, but directly on the outside of the main reflector 5 arranged, the outer side being convex in the vertical direction is. This additional reflector 31 is thus arranged in one piece on the main reflector 5. The Reflection surface 33 is by an outside in the area of the window 34 and in Area of the formation 35 applied reflection layer 23a formed. At this The additional reflector 31 is thus embodied by a transparent thickening 30 or an outside transparent material approach on the main reflector 5 is formed. In this embodiment too, the reflection surface 24 can be covered by an outside or preferably inside coating of the main reflector 5 with a Reflection layer 23 may be formed. In the horizontal cross section, the outer surface 30a of the thickening 30 or a material approach parallel to the straight or curved peripheral wall 22 extend. The can in the circumferential direction pointing ends of the thickening 30 blunt, z. B. be angular or rounded. It is also advantageous for both a straight and curved peripheral wall 22 the outer surface 30a is convexly curved or with a stronger convex Form curvature than the curvature of the peripheral wall 22, whereby a lens-shaped cross-sectional shape for the thickening 30 results.

6, the reflection surface 33 closes in its upper one Area an open downward acute angle W3 with the peripheral wall 22 of the Main reflector 5 a. These are only advantageous exemplary configurations. in the Within the scope of the invention it is of course possible, in the embodiment according to FIG Arrangement and shape of the embodiment of FIG. 5 and the arrangement in the latter and form according to FIG. 6.

The configuration according to FIGS. 8 and 9 differs from the configuration according to 6 and 7 in that the reflection surface 33 in superimposed Reflective surface stripe 33a is divided with respect to a resultant one Irradiation direction 27 and the vertical longitudinal central axis 18 of the lamp 2 in one such angles W4 are arranged that - taking into account the Light refraction angle - the respective propagation direction component 32 below the opposite edge region of the main reflector 5 is directed. Between the successive reflective surface strips 33a are transverse to the latter arranged step surfaces 33b, which has a step-shaped outer surface of the Additional reflector 31 result. At least the reflective surface strips 33a and preferably also the step surfaces 33b are provided with a reflection layer 23 coated so that the reflection corresponds to the propagation direction components 32 is guaranteed. In this embodiment too, the reflection layer 23 can be outside the window 34 on the outside or preferably inside 26 of the Main reflector 5 may be arranged.

The position or positions of one or more additional reflectors 31 is according to the To determine the need for side lighting. If, according to FIG lateral radiation is only desired on one side of the lamp 1, e.g. B. for Illumination of a wall 37 or a lateral area of the existing space, it only requires an additional reflector 31 on the opposite side of the Luminaire 1 or the main reflector 5, the length directed in the circumferential direction L of the additional reflector 31 is to be dimensioned as long, e.g. about 90 ° that that of his End areas reflected propagation direction components to the lateral ones limit the illuminating area LB.

If, as shown in FIG. 11, two opposite walls 37 are to be illuminated laterally are, two additional reflectors 31 are correspondingly opposite to each other to arrange.

If, according to FIG. 12, a corner formed by two walls 37 or a corresponding one Area of the room to be illuminated laterally, is an additional reflector 31 on the the corner opposite side of the lamp 1 to be arranged. Depending on the size of the illuminating area LB can here also an additional reflector 31 in the length L according 10 or 11 or in an over an angular range of about 180 ° extending length L are provided.

All of the above-described exemplary embodiments are due to the steep radiation the lamp 1 forming a downlight when looking in or across additional propagation direction 32 glare the lamp 1. This is e.g. B. at the Illumination of a hallway 38 between the walls 37 of FIG. 11 is important and beneficial.

In all of the above-described exemplary embodiments, it is possible and advantageous to the reflection surface 24, 33, the main reflector 5 and / or the additional reflector 31 to provide a structure that diffuses light in a small angular range and thus brings about a reduction in subjective glare and / or aesthetic Improved appearance of the lamp. Such a structure may e.g. B. um act facet surfaces known per se. In the embodiments described above the main reflector 5 and the additional reflector 31 can this structure on Main reflector 5 may be provided on the inside or outside thereof, with respect to of the additional reflector 31 this structure also in the area of the window 34 outside or can be arranged on the inside.

Claims (14)

1. Light fitting (1) having a lamp (2) and having a main reflector (5), whereby in at least one part region of the lateral periphery of the main reflector (5) there is arranged an auxiliary reflector (31), whereby the main reflector (5) is coated on the outside, or on the inside, with a reflection layer (23), whereby the auxiliary reflector (31) is arranged outwardly of the main reflector (5) and whereby in the region of the auxiliary reflector (31) no reflection layer (23) is provided (window 34) on the main reflector (5),
   characterized in that,
   the main reflector (5) is of transparent material and in that the auxiliary reflector (31) is formed by means of an outer transparent thickening (30) of the peripheral wall (22) of the main reflector (5), which thickening is coated on its outer surface (30a) with a reflection layer (23a) which forms a reflection surface (33) on the outer surface (30a) of the auxiliary reflector (33).
2. Light fitting according to claim 1,
   characterized in that,
   the outer surface (30a) of the thickening (30) or the reflection surface (33) is, in the axial section of the light fitting (1), convexly formed, in particular domed.
3. Light fitting according to claim 1 or 2,
   characterized in that,
   the outer surface (30a) of the thickening (30) runs, in the section transverse to the middle axis (18) of the light fitting (1), parallel to the remaining peripheral surface of the peripheral wall (22) of the main reflector (5).
4. Light fitting according to any preceding claim,
   characterized in that,
   the outer surface (30a) of the thickening (30) is, in the section transverse to the middle axis (18) of the light fitting (1), convexly formed or domed.
5. Light fitting according to any preceding claim,
   characterized in that,
   the thickening (30) has, in the section transverse to the middle axis (18) of the light fitting (1), a lens-shaped cross-sectional form.
6. Light fitting according to any preceding claim,
   characterized in that,
   in the section transverse to the middle axis (18) of the light fitting (1), the peripheral wall (22) of the main reflector (5) extends straight or curved.
7. Light fitting according to any preceding claim,
   characterized in that,
   the reflection surface (33) on the auxiliary reflector (31) is of a plurality of reflection strip surfaces (33a), running next to one another in the peripheral direction of the main reflector (5) and longitudinally of the middle axis (18) of the light fitting (1), which strips, with reference to a resulting emission direction (27) of the lamp (2), are arranged at such an angle (W4) that - in each case taking into account the light refraction angle - the respective propagation direction component (32) is directed below the oppositely lying edge region of the main reflector (5).
8. Light fitting (1) having a lamp (2) and having a main reflector (5), whereby in at least one part region of the lateral periphery of the main reflector (5) there is. arranged an auxiliary reflector (31), whereby the main reflector (5) is coated on the outside, or on the inside, with a reflection layer (23), whereby the auxiliary reflector (31) is arranged outwardly of the main reflector (5) and whereby in the region of the auxiliary reflector (31) no reflection layer (23) is provided (window 34) on the main reflector (5),
   characterized in that,
   the main reflector (5) is of transparent material and in that the auxiliary reflector (31) is formed by means of an external transparent material attachment of the peripheral wall (22) of the main reflector (5), which attachment is coated on its outer surface (30a) with a reflection layer (23a) which forms a reflection surface (33) on the outer surface (30a) of the auxiliary reflector (33),
   in that the reflection surface (33) on the auxiliary reflector (31) is of a plurality of reflection strip surfaces (33a), running next to one another in the peripheral direction of the main reflector (5) and longitudinally of the middle axis (18) of the light fitting (1), which strips, with reference to a resulting emission direction (27) of the lamp (2), are arranged at such an angle (W4) that - in each case taking into account the light refraction angle - the respective propagation direction components (32) are directed below the oppositely lying edge region of the main reflector (5) .
9. Light fitting according to claim 8,
   characterized in that,
   step surfaces (33b) are arranged between the successive reflection surface strips (33a), transversely of the latter.
10. Light fitting according to any preceding claim,
    characterized in that,
    the reflection layer (23, 23a) on the main reflector (5) and/or on the auxiliary reflector (31) is a metallic layer.
11. Light fitting according to any preceding claim,
    characterized in that,
    the reflection layer (23, 23a) on the main reflector (5) and/or on the auxiliary reflector (31) is at least in part of aluminium or chrome.
12. Light fitting according to any preceding claim,
    characterized in that,
    the reflection layer (23, 23a) on the main reflector (5) and/or on the auxiliary reflector (31) is formed by evaporation or by means of chromizing.
13. Light fitting according to any preceding claim,
    characterized in that,
    the outer surface (30a) of the auxiliary reflector (31) and/or the outer surface or inner surface (26) of the main reflector (5) has a structure which causes light scattering over a small range of angles, in particular has facetted surfaces or fields.
14. Light fitting according to claim 13,
    characterized in that,
    the structure is formed by means of facetted surfaces or fields.

Images