WO2009056927A1

WO2009056927A1 - Lamp with a combination of reflectors

Info

Publication number: WO2009056927A1
Application number: PCT/IB2008/002674
Authority: WO
Inventors: Otto Flach
Original assignee: Ansorg Gmbh
Priority date: 2007-10-29
Filing date: 2008-10-06
Publication date: 2009-05-07
Also published as: DE202007015112U1

Abstract

The lamp with a combination of reflectors (1,2,3) is used for the selective light distribution with an adjustable reflector (3) arranged in the vicinity of a luminous means (5). A first reflector (1) is provided with a reflective bottom side (11). A second reflector (2) is provided with a lower light exit opening (21) and an upper light exit opening (22) which is located opposite the former. The upper light exit opening (22) faces the first reflector (1). The luminous means (5) is arranged inside the second reflector (2). A third reflector (3) surrounds the luminous means (5) and can be adjusted between a maximally upper position (P1), via a central position (P2) to a maximally lower position (P3) in order to thus guide a proportion of light through the lower light exit opening (21) into the space and another proportion of light through the upper light exit opening (22) onto the first reflector (1) from which the incoming light is likewise guided into the space. The proportion of light guided, in the case of the maximally upper position (P1) of the third reflector (3), to the first reflector (1) through the upper light exit opening (22) is zero in principle, whereas the proportion of light guided to the space through the lower light exit opening (21) has its maximum. Due to the adjustment of the third reflector (3) in the direction of the maximally lower position (P3), the proportion of light guided to the first reflector (1) through the upper light exit opening (22) increases, whereas the proportion of light guided to the space through the lower light exit opening (21) decreases.

Description

Lamp with a combination of reflectors

Field of application of the invention

The invention relates to a luminaire with a combination of reflectors for selectively distributing light with an adjustable reflector arranged close to a luminous means. The luminaire is primarily intended for decorative lighting of sales and exhibition spaces and objects presented therein. A typical use would be e.g. in delicatessens and wine shops.

State of the art

In DE 195 47 747 A1 a lamp is disclosed which consists of a middle and two side panels. In the middle part and in the two side parts each sit radiation elements that serve the optimal illumination of the room. The total lighting share is made up of three individual shares, of which two individual shares provide a direct and the remaining individual share an indirect share of radiation. In this case, at least a portion of optically diffused light and a proportion of optically ungestreutem light. The indirect radiation component propagates in the opposite direction, like the direct radiation component.

DE 199 54 134 A1 relates to a luminaire which has a light outlet which can be set by means of at least two reflectors and which serves to emit direct and / or indirect light. The reflectors can be positioned around the light source so that they can rotate independently of one another, so that with synchronous adjustment of the reflectors either only direct and / or indirect light emerges symmetrically, or asymmetrically out of the luminaire in the case of asynchronous adjustment of the reflectors.

The luminaire shown in US 4,280,170 is intended for ceiling mounting and is used for direct and indirect illumination of an underlying work surface. The luminaire consists of an elongated rod, which is attached to the ceiling with its upper end and has a shell-shaped end at its lower end. having a shaped housing. At the lower end of the rod sits a bulb, which is enclosed by the housing. The rays emanating from the light source are deflected on the one hand by the side surfaces of the housing and serve as indirect light, on the other hand, the rays exiting through the bottom of the housing as direct light.

WO 00/47 931 A1 relates to a luminaire which consists of a housing, the light source, a pillar and the preferably angular luminaire reflector. The reflector has a first plane from which the light is radiated down along the column and a second plane that is below the first plane. From the second level, the light is also emitted downwards, but no longer along the column, but away from it.

The German design entry 40 205 186 shows a floor lamp with convertible lampshade, which consists of an inner frame, which has light sources on the foot and the head of the object. On the other hand, a hose-like lampshade forms the outer skin of the light object. By means of bands o.a. Tailierungen the hose can be designed in different places. The playful positioning of the waistings changes the shape and the light distribution of the lamp.

The Euro design entry 000710926-0008 relates to a funnel-like lamp whose collar faces the ceiling. At the tapered end, the light source is fitted with a reflector layer at the bottom, which could guide the light against the cover plate.

In the monograph by Fiell, Charlotte & Peter: 1000 Lights, Vol. 2, 1960 to present. Taschen GmbH, Cologne 2005, p. 439, a figure is shown with a number of wine glasses whose goblets are positioned at the bottom of the room ceiling. An arranged underneath light radiates on the one hand up the wine glasses, which thus form a kind of reflector, and on the other hand to the ground. Object of the invention

In view of the solutions known from the current state of the art with their previously limited lighting effects, the object of the invention is to provide a luminaire with a combination of reflectors for optional light distribution with which illumination images particularly adapted to the place of use can be produced. A change in the light distribution must be brought about by the simplest possible adjustability on one of the reflectors. Finally, it must be based on making it possible to produce the luminaire at an efficient cost in a small number of units through low material and assembly costs.

Overview of the invention

The luminaire with a combination of reflectors is used for optional light distribution with an adjustable reflector arranged close to a luminous means. A first reflector is provided with a reflective bottom. A second reflector is provided with a lower light exit opening and an upper light exit opening opposite thereto. The upper light exit opening faces the first reflector. The lighting means is arranged within the second reflector. A third reflector surrounds the lighting means, which can be adjusted between a maximum upper position, about a middle position, to a maximum lower position, in this case a proportion of light through the lower light exit opening into the room and another light component through the upper light exit opening on the to guide the first reflector, from which the incoming light is also led into the room.

The following features relate to specific embodiments of the invention: The guided at the maximum upper position of the third reflector through the upper light exit opening to the first reflector light component is zero in principle, while the guided through the lower light exit opening to the light portion has its maximum. With the adjustment of the third reflector in the direction of the maximum lower position, the light component conducted to the first reflector through the upper light exit opening increases, while the light component guided through the lower light exit opening to the room decreases. The first reflector comprises a plate, from the underside of which extends downwardly with a conically tapering transition a shaft centrally. The shaft projects through the upper light exit opening into the second reflector. The shaft has at its free end a connection for connection to the light source. The stem can accommodate an electronic ballast.

The second reflector tapers conically towards the upper light exit opening. On the shaft is a holder, which fixes the second reflector supporting in the region of the upper light exit opening.

The third reflector comprises a top surface with a central passage which allows vertical movement of the illuminant. The third reflector has a jacket-shaped side surface which cylindrically attaches to the top surface and a downwardly conically opening screen surface, which adjoins the lower end of the side surface on the one hand and on the other hand extends to the central opening in the top surface.

In the maximum upper position of the third reflector, the top surface is above the light-emitting part of the lamp. In the maximum lower position of the third reflector, the top surface is below the light-emitting part of the lamp.

For height-adjustable arrangement of the third reflector fixing are provided. The fixing elements surround on the one hand with a bracket section longitudinally extending rod segments on the lamp self-locking and on the other hand on the third reflector, preferably on the top surface, fixed.

For insertion into the lower light exit opening a cover is provided, wherein by means of the cover from the interior of the second reflector incoming light is at least partially prevented from passing into the room or dyed. Brief description of the attached drawings

Show it:

Figure 1A - a lamp according to the invention, with the visible first and second reflector, in perspective view; Figure 1 B - the lamp according to Figure 1A, in a perspective plan view;

Figure 1C - the lamp according to Figure 1A, with the additional third reflector, in perspective exploded view;

Figure 2A - the lamp according to Figure 1A, with transparency to the internals in the second reflector, with the third reflector in maximum upper position, in frontal schematic representation;

Figure 2B - the enlarged detail X1 of Figure 2A;

Figure 3A - the lamp according to Figure 1A, with transparency to the internals in the second reflector, with the third reflector in the middle position, in frontal schematic representation;

Figure 3B - the enlarged detail X2 of Figure 2A;

Figure 4A - the lamp according to Figure 1A, with transparency to the internals in the second reflector, with the third reflector in maximum lower position, in frontal schematic representation;

Figure 4B - the enlarged detail X3 of Figure 2A;

Figure 5 - the lamp according to Figure 1A, with transparency to the internals in the second reflector, with the third reflector in the uppermost position and inserted in the second reflector insert, in frontal schematic diagram;

Figure 6 - the detail of the holder of the second reflector;

Figure 7A - the detail with fixing elements on the third reflector; and Figure 7B - the detail of the holder on the second reflector.

Embodiment With reference to the accompanying drawings, detailed below Description of an embodiment of the inventive lamp with a combination of reflectors.

The following definition applies to the entire further description. If reference numbers are included in a figure for the purpose of clarity of drawing, but are not explained in the directly associated description text, reference is made to their mention in the preceding or following description of the figures. For the sake of clarity, the repeated designation of components in other figures is generally dispensed with, as far as the drawing clearly shows that they are "recurring" components.

FIGS. 1A to 1C

The luminaire initially consists of a substantially disc-shaped first reflector 1, which is composed of a plate 10 and a shaft 13 extending centrally from its underside 11. From the underside of the plate 11, the shaft 13 begins with a conical transition 14, followed by a cylindrical section, which ends free at the terminal 15. The underside 11 of the plate 10 and the surface at the transition 14 are light-reflecting. The top 12 of the plate 10 is for direct or indirect placement on a support structure, e.g. in the form of a building ceiling or a suspended false ceiling.

The second reflector 2 has the shape of an upwardly conically tapered cup and the circular lower opening 21 and the reduced in diameter upper opening 22 on. The second reflector 2 is preferably made of an at least semi-translucent material. The lamp further includes a wheel-like holder 6 with an outer ring, a concentrically arranged inner ring and spokes extending between the rings. The light source used is a light source 5 which can be inserted into the connection 15 on the first reflector 1.

The third reflector 3 is cylindrical in shape and has a tube-like side surface 30 and a disk-like top attached to the side surface 30 Cover surface 32 with zeπtrischer, circular opening 33. Clip-like fixing 7 serve to attach the third reflector 3 internally of the second reflector 2, preferably to the vertically extending bar segments 50 of the light source 5. For special applications, a cover 4 is provided with a circular area, the can be inserted into the lower opening 21 of the second reflector 2 so that this lower opening 21 is completely closed at least in principle.

In the assembled state, the shaft 13 of the first reflector 1 extends centrally into the upper opening 22 of the second reflector 2. In this case, the shaft 13 is surrounded by the inner ring of the holder 6 and the outer ring of this holder 6 is fixed to the upper opening 22. Thus, the second reflector 2 depends on the first reflector 1 and it creates the shape of an inverted cup or wine glass. In the connection 15 is the interchangeable lamp 5, to which the fixing elements 7 are arranged vertically displaceable and so carry the third reflector 3. Of the third reflector 3, at least the upper side of the cover surface 32 and the underside of the screen surface 31 (see Figure 2B) are of a reflective nature. The third reflector 3 has concentric with the opening 35 in the top surface 32 has a lower opening 34. The outside of the side surface 30 may be reflective.

The cover 4 requires no reflective surfaces; it is either completely opaque or only partially translucent. For special applications you could make the cover 4 of partially translucent material with a coloring. The luminaire is typically arranged with the lower opening 21 on the second reflector 2 directed toward the ground. The top 12 of the plate 10 from the reflector 1 is mounted on a support structure, in particular a ceiling. In a special application, the luminaire could also be arranged on a support structure such that the lower opening 21 of the second reflector 2 is directed obliquely towards the floor, horizontally into the room or upwards into the room. Figures 2A and 2B

This pair of figures shows the third reflector 3 in a maximum pushed up position P ^. Thus, the top surface 32 is at the upper end or even above the light source 5. The side surface 30 surrounds the light source 5 in the downward direction over a distance of about 2/3 and between the side surface 30 and the top surface 32 extends downwardly conically opening Shield surface 31. This results in a light distribution, according to which the path to the first reflector 1 is blocked by the maximum overhead deck surface 32, consequently, can be reflected from the reflector bottom 11 no light emitted by the light source 3 in the ground direction. In the position Pi, the maximum upwardly pushed side surface 30 acts as a radial shield, so that no light emerges at the upper region of the second reflector 2. From the lamp 5 is irradiated over the entire extent of the lamp 5 facing screen surface 31, which reflects the light received through the lower opening 34 in the bottom direction. At the same time, the area of the luminous means 5, which protrudes downward from the third reflector 3, sheds its light on the second reflector 2 to the side. You will choose this setting if you want to achieve a downwards desired spot lighting.

FIGS. 3A and 3B

In this group of figures, the third reflector 3 is in a middle height position P ₂ . Thus, the upper half of the bulb 5 remains unshielded by the third reflector 3, the top surface 32 is halfway up the bulb 5 and the side surface 30 and the shield 31 include the lower part of the bulb 5. This results in the following light distribution, after which the upper Area of the light source 5 to the side radiates to the here conical inner surface of the second reflector 2, of which at least a portion is directed to the top of the top surface 32. At the same time, light passes from the upper region of the luminous means 5 directly onto the upper side of the cover surface 32, which deflects the recorded light toward the underside 11 and the transition surface 14 on the first reflector 1. The first reflector 1 thus generates a cone of light which opens toward the bottom. At the same time, depending on the nature of the second reflector 2, a portion of light above the top surface 32 through the second reflector 2 to the outside. The light emitted by the lower half of the luminous means 5 projecting into the third reflector 3 is directed out of the lower opening 34 out to the ground as spot lighting. A part of the light emitted by the light source 5 below the cover surface 32 will, depending on the material properties of the second reflector 2, emerge at its lower region. Such a positioning of the third reflector 3 will be selected if a respective partial radiation from the second reflector 2 and the third reflector 3 is desired.

FIGS. 4A and 4B

According to this pair of figures, the third reflector 3 is located at the lowermost position P ₃ , in which the entire light-emitting region of the luminous means 5 is now above the top surface 32. Thus, no light reaches the screen surface 31, which could be directed by the third reflector 3 directly toward the ground. On the other hand, a maximum of light will hit the top of the top surface 32, from here to the bottom 11 with the transition 14 at the first reflector 1 and finally reflected from there in a wide spread and in a downwardly opening cone to the ground. With light transmission of the second reflector 2 in the upper region adjoining the upper opening 22, this arial will be illuminated. This setting is used when no spotlighting is to be provided, but a large floor area is to be illuminated as far as possible in the same or outwardly decreasing light concentration. The light distribution obtained depends on the geometric design of the first reflector 1, the upper opening 22 on the second reflector 2, its entire design, as well as on the third reflector 3, and in particular on the cover surface 32 thereof.

FIG. 5 The third reflector 3 is located here at the upper position P ₁ , as already in FIGS. 2A and 2B. Now, however, the lower opening 22 is completely closed on the second reflector 2 with the completely opaque cover 4, for example. Thus, neither a proportion of light for ground reflection reaches the first re 1, still the reflected from the screen 31 large amount of light from the lower opening 21 to the ground exit. Only the area of the second reflector 2, which lies below the side surface 30, can be perceived as enlightened from the outside, depending on the degree of light transmission. This setting will be chosen if it is intended to illuminate the second reflector 2 only as a body without generating a scattered light over the first reflector 1 and a spotlight over the third reflector 3.

FIG. 6 The fixed-position second reflector 2 is fastened by means of the holder 6 at the lower end of the shaft 13 extending from the first reflector 1. Here, the inner ring 61 of the holder 6 comprises the shaft 13 and the outer ring 60 of the holder 6 is the second reflector 2 supporting inserted into its upper opening 22. The holder 6 is e.g. a wireform that can be used in the second reflector 2 also contribute to its dimensional stability. Between the inner ring 61 and the outer ring 60 extend radial connecting webs 62. The inner ring 61 of the holder 6 includes the shaft 13 so tight, or it is provided an additional fixation that the inner ring 61 remains in a stable position.

FIGS. 7A and 7B

At least two clip-like fixing non-slip embrace each a bar segment 50 in the illuminant 5. Each of the fixing 7 extends a tongue segment, which is connected to the top surface 32 of the third reflector 3 , Thus, the third reflector 3 is carried by the light source 5. For the height-adjustable attachment of the third reflector 3 further design alternatives are conceivable. Decisive here is that the third reflector 3 comprising the light source 5 in the height position between a position Pi - the top surface 32 is located above the light emitting area of the light source 5 - and a position P ₃ - the top surface 32 is below the light emitting area - as infinitely variable, but can be self-locking move. The suspension for The third reflector 3 could also be provided on the holder 6, directly on the shaft 13 or internally of the second reflector 2. Such a suspension will be chosen in particular if the lighting means 5 has no vertical, elongated rod segments 50, which can be used to guide the fixing elements 7.

Claims

Patent claims

1. luminaire with a combination of reflectors (1, 2, 3) for selectively distributing light with an illuminating means (5) arranged adjustable reflector (3), characterized in that a) a first reflector (1) having a reflective bottom ( 11) is provided; b) a second reflector (2) having a lower light exit opening (21) and an upper light exit opening (22) opposite thereto is provided; c) the upper light exit opening (22) faces the first reflector (1); d) the luminous means (5) within the second reflector (2) is arranged; and e) a third reflector (3) surrounds the light source (5), which can be adjusted between a maximum upper position (Pi), a middle position (P ₂ ), and a maximum lower position (P ₃ ) in this case, a light component through the lower light exit opening (21) into the room and another light component through the upper light exit opening (22) on the first reflector

(1), from which the incoming light is also directed into the room.

2. Lamp according to claim 1, characterized in that a) at the maximum upper position (PO of the third reflector (3) through the upper light exit opening (22) to the first reflector (1) led light component is in principle zero, while by the lower light exit opening (21) for

Space-directed light component has its maximum; and b) with the adjustment of the third reflector (3) in the direction of the maximum lower position (P ₃ ) of the first reflector (1) through the upper light exit opening

(22) increases light fraction, while the light emitted through the lower light exit opening (21) to the space light component decreases.

3. Luminaire according to at least one of claims 1 and 2, character- ized in that a) the first reflector (1) comprises a plate (10) from the underside (11) downwards with a conically tapered transition (14) centric one Shank (13) extends; b) the shaft (13) protrudes through the upper light exit opening (22) into the second reflector (2); c) the shaft (13) has at its free end a connection (15) for connection to the lighting means (5); and d) in the shaft (13) an electronic ballast can be accommodated.

4. Luminaire according to at least one of claims 1 to 3, characterized in that a) the second reflector (2) tapers conically towards the upper light exit opening (22); and b) attaches to the shaft (13) a holder (6), which is fixed to support the second reflector (2) in the region of the upper light exit opening (22).

5. Luminaire according to at least one of claims 1 to 4, characterized in that the third reflector (3) comprises: a) a cover surface (32) with a central opening (33) which allows the vertical passage of the luminous means (5); b) a jacket-shaped side surface (30), the cylindrically attached to the top surface (32); and c) a downwardly conically opening screen surface (31) which adjoins the lower end of the side surface (30) on the one hand and on the other hand extends to the central opening (33) in the top surface (32).

6. Luminaire according to at least one of claims 1 to 5, characterized in that a) in the maximum upper position (Pi) of the third reflector (3) is the top surface (32) above the light-emitting part of the lighting means (5); and b) in the maximum lower position (P ₃ ) of the third reflector (3), the cover surface (32) is located below the light-emitting part of the luminous means (5).

7. Luminaire according to at least one of claims 1 to 6, characterized in that a) for height-displaceable arrangement of the third reflector (3) fixing elements

(7) are provided; and b) the fixing elements (7) engage on the one hand with a bracket portion longitudinally extending rod segments (50) on the light source (5) self-locking and on the other hand on the third reflector (3), preferably on its top surface (32), are attached.

8. Luminaire according to at least one of claims 1 to 7, characterized in that for insertion into the lower light exit opening (21) a cover (4) is provided, wherein by means of the cover (4) from the interior of the second reflector (2) incoming light : a) at least partially hindered from entering the room; or b) is colored.