EP1248033B1 - Reflector lamp, especially floor-, ceiling- or wall-reflector lamp of the recessed type - Google Patents

Abstract

The reflector lamp (10) has a parabolic reflector (11) with a light source (L) positioned at its focus (F), with a light exit plane (E) perpendicular to the symmetry axis (x) passing through the focus. The light source can be displaced linearly in the light exit plane relative to the focus, with a light shield (16) enclosing it on the side opposite to the reflector.

Description

The invention relates to a reflector lamp according to the preamble of claim 1. Such a reflector lamp is in terms of their general photometric properties, for example, in the "Handbuch für Illumination ", 4th ed., Verlag W. Girardet, Essen (see page 107 there) and described in the generic DE-U1-200 19 334. Characteristic of such a luminaire with parabolic reflector is that parallel light exits the reflector when the light source is in focus located.

Reflector lights serving as ground lights have in the Usually a very flat parabolic reflector, but this has the consequence that such a reflector lamp significantly fades when viewed from above. The However, glare can be prevented by shielding the light source by means of a Calotte, which gives a direct insight e.g. on the lamp filament prevented.

From a cone reflector having a body reflector light is it is known (see catalog "ERCO luminaire program", issue 1993/95, page 55), within a rearwardly adjoining a cone reflector Kaschierrohres a socket fitting together with a general-use lamp for To shift the change of geometric shadow space axially.

Starting from the known reflector light described above According to the "Lighting Handbook" (see above), the invention is the Task based, in particular a floor, ceiling or recessed wall reflector light to create which a compact, especially flat design and which in spite of their flat design a substantially glare-free lighting allowed.

In conjunction with the features of the preamble of claim 1 This object is achieved according to the invention in that the parabolic reflector essentially only between his head and one through his Focused, the axis of symmetry of the parabolic reflector perpendicular cutting light output level is light-conducting effect that of the Light source outgoing light only between the light exit plane and the Vertex radiates towards the reflector, and that the light source in the light exit plane relative to the focal point translationally displaceable or translational is arranged shifted.

It is essential that the invention has an axially shortened design of the Parabolic reflectors allowed. Due to the fact that the parabolic reflector in essential only between his head and one through the focal point placed, the axis of symmetry of the parabolic reflector perpendicular intersecting Lichtaustrittsebene is light-conducting effect, the parabolic reflector can either around the outside of the light exit plane located lighting technically ineffective Reflector area shortened or the ineffective outer reflector area for design purposes, for example, a appealing transition to the luminaire housing to create. Otherwise, will by the somewhat axially shortened parabolic reflector according to the invention compared to an axially unabridged parabolic reflector a narrow light guide, connected to a relatively large luminous flux density in the sense of directivity of the emitted light.

Due to the fact that the electric light source or the electric light source in the light exit plane with respect to the focal point translationally displaceable or is arranged translationally shifted, the invention has the Possibility to divert the exiting parallel rays of light so that they are not axially parallel to the axis of symmetry of the parabolic reflector but at a tilt angle to the symmetry axis of the parabolic reflector can escape from this.

Thus, it has become possible according to the invention, for example in a ground-mounted reflector light only by moving the light source in the light exit plane while avoiding a directly from the Reflector outgoing glare even then to illuminate a wall when the light exit plane of the reflector lamp to be illuminated with the Wall forms an angle of 90 °.

The same inventive principle can also be used e.g. in a wall-mounted reflector light or at an elevated position according to the invention Reflector luminaire can be used to flat surfaces, e.g. Streets, squares, Entrances etc. to illuminate largely glare-free. So it is e.g. possible, in Entrances reflector lamps according to the invention, in particular recessed wall lights, whose light exit plane extends vertically, about in the headlight height of motor vehicles to illuminate the track so that the driver is not dazzled even if the lamp is directly in the Viewpoint of the driver is located.

In any case, a direct outgoing from the light source itself Glare according to the invention thereby avoided that of the Light source outgoing light only between the light exit plane and the Vertex radiates towards the reflector.

According to the invention, the light source in the light exit plane translationally displaceable, so readjustable or for certain predetermined Use cases already fixed, i. translated translationally, be educated.

In a further embodiment of the invention, the light source is in each shifted Releasably lock the position. Such an arrangement allows e.g. despite several arranged in a row recessed floor reflector lights despite on-site tolerances in the floor a uniform wall illumination, because the light emission can be readjusted with each reflector lamp.

Another embodiment according to the invention is characterized characterized in that the light source is displaceable along a straight line. Applied to the example of a recessed ground reflector lamp, would the straight line along which the light source is to be moved horizontally and otherwise extend perpendicular with respect to the wall surface to be illuminated. A shift of the light source from the wall surface to be illuminated away means a greater inclination of the exiting light to the wall surface out. On the other hand, a shift towards the causes illuminating wall surface towards an opposite slope of the exiting Light away from the wall surface.

A simple design that achieves that from the light source outgoing light only between the light exit plane and the Reflector vertex radiates towards the reflector is, according to another Feature of the invention achieved in that the light source at its the Apex of the reflector facing away from an opaque Shield is overlapped. The shield may be curved, such as e.g. be hemispherical or semi-circular cylindrical curved.

To avoid unwanted light reflections, it has become expediently, the free edges of the shield substantially to be arranged in the light exit plane.

To avoid a light source, if necessary, thermally too much burdening multiple reflection, the invention also provides that the Light source facing inner surface of the shield dull or black, in particular is matte black.

In conjunction with the opaque shielding of the invention is according to another feature of the invention, the use a light source has become possible in substantially all directions radiates.

In this case come as suitable for the purposes of the invention light sources Low-voltage halogen lamps, for example of the type QT 12 or metal halide lamps ceramic, for example of the type HIT-CRI 35, in Consideration.

In such light sources, each having an approximately circular cylindrical lamp bulb, having a glass bulb, the invention provides that the cylinder axis of the lamp envelope substantially in the light exit plane is arranged and that the light source cross-opaque Shield at least indirectly held on the side of the reflector is.

In this case, the opaque shield at least indirectly be held either one-end or both ends on the reflector. If necessary To avoid loss of light, it has proven to be useful that the opaque shield at least indirectly one-sided laterally on Reflector is held.

Furthermore, the invention provides in this context that the Light source optionally including its socket fitting with respect to opaque shield is arranged relatively displaceable.

To ensure that when shifting the light source the opaque shield safely avoids direct glare, the invention provides that the opaque shield a Has area size, taking into account the displacement of the Light source is greater than the luminous surface of the light source.

Alternatively, the invention also provides that the light source including their socket fitting and including the opaque Shield relative to the reflector is relatively displaceable.

Furthermore, the invention provides light sources, which no separate Shielding, far from their own design, a one-sided radiating light effect is intrinsic. Such light sources are for example Light emitting diodes (LEDs). Accordingly, there is another feature of the invention in that the light source consists of at least one Luminescence diode - LED - exists.

Single-sided emitting light-emitting diodes, which lead to the reflector interior radiate towards, therefore, do not require a separate opaque Shielding.

In the case that the invention is spherical (e.g., hemispherical) emitting light emitting diodes used, the reflector light is, however, with a separate opaque shield provided.

In order to achieve a sufficient light output, the invention looks in on known manner that several light-emitting diodes, closely joined together, form a common light source.

In such a close-coupled array of multiple light emitting diodes At the same time, certain configurations, ie curves (e.g. Circles) or straight lines.

A translatory displacement of the light source can accordingly additional features of the invention are achieved indirectly by that of the several, e.g. along a curve or along a straight line arranged light-emitting diodes only one or more are switched on.

Further inventive features result from additional subclaims.

Fig. 1 in schematischer Darstellungsweise eine Bodeneinbau-Reflektorleuchte,

Fig. 2 die Bodeneinbau-Reflektorleuchte in der Draufsicht entsprechend der in Fig. 1 mit II bezeichneten Blickrichtung,

Fig. 3 einen zentralen Vertikalschnitt durch eine Wandeinbau-Reflektorleuchte,

Fig. 4 die Reflektorleuchte gemäß Fig. 3 in einem gegenüber Fig. 3 um 90° gedrehten Vertikalschnitt, zum Teil in Ansicht,

Fig. 5 einen zentralen Vertikalschnitt durch eine Bodeneinbau-Reflektorleuchte und

Fig. 6 die Bodeneinbau-Reflektorleuchte gemäß Fig. 5 in einem gegenüber Fig. 5 um 90° gedrehten Vertikalschnitt, zum Teil in Ansicht.

In the drawings preferred embodiments are shown according to the invention, it shows

1 is a schematic representation of a ground-mounted reflector lamp,

2 shows the ground-mounted reflector lamp in the plan view corresponding to the viewing direction indicated in Fig. 1 II,

3 is a central vertical section through a recessed wall reflector lamp,

3 in a comparison with FIG. 3 rotated by 90 ° vertical section, partly in view,

Fig. 5 shows a central vertical section through a recessed ground reflector lamp and

Fig. 6, the ground-mounted reflector lamp of FIG. 5 in a comparison with FIG. 5 rotated by 90 ° vertical section, partly in view.

In the drawings, the illustrated reflector lights are independent Of their special design always consistent with the same reference numeral 10th designated. Also, for all comparable analog single components always using the same reference numbers.

1, a ground-mounted reflector lamp 10 is in a floor B, to which a wall W extends vertically.

The reflector lamp 10 has a parabolic reflector as an essential component 11, the reflector inner surface 12 is mirrored. Is appropriate the reflector inner surface 12 high gloss. It can also be structured, such as be faceted.

The flange 13 of the parabolic reflector 11 is followed by a circular cylindrical Recording 14, in which a puncture-proof, translucent, transparent Glass plate 15 is held.

Between the reflector 13 and the glass plate 15 can also more Glass plate elements, e.g. a prismatic plate, a sculpture lens or a color filter plate may be arranged.

The focal point of the parabolic reflector 11 are F and its axis of symmetry denoted by x. The arranged in the focal point F, as a solid Circular illustrated light source, such as a low-voltage halogen lamp of the type QT 12, is denoted by L.

The also entered as a dashed circle light source L is to a displacement z from the wall W and from the focal point F away to the left postponed.

The light source L is of an elongated opaque shield 16 overlapped, which, for example, an approximately semicircular Cross section and which the parabolic reflector 11 and the recording 14 on one side in a lateral recess 17 passes through. The right in Fig. 1 shown free end of the shield 17 is by means of a front-side Top plate 36 closed.

To make the light source L in Fig. 1 visible, the shield is 16 broken out in its free end. The inner surface 37 of the Shield 16 is dull black.

The opaque shield 16 causes that from the light source L outgoing light only between a dot-dash line Light exit plane E and the apex S of the reflector 11 radiated out becomes. The downward facing free edges R of the semi-circular cylinder formed Shield 16 at the same time determine the position of the light exit plane E. The photometrically effective reflector inner surface 12 ends accordingly at the light exit plane E. The on the light source L facing away Side of the light exit plane E existing residual reflector inner surface 18 is Accordingly, technically ineffective.

Based on Fig. 1 is also conceivable that all of the focal point F arranged light source L outgoing shown in dashed lines Light rays P emerge parallel to each other from the parabolic reflector 11 and in the rest of the light exit plane E cut vertically.

As soon as the light source L has its dashed lines around the displacement Z has moved away from focus F, the light beams V shown as dotted lines are deflected so that they cut the light exit plane E at an inclination angle and the rest directed towards the wall W.

This means the greatest possible freedom from glare for those on the floor B resident persons. The glare-free can be further improved by that in the region of the left reflector half above the shield 16 and below the tread-resistant glass plate 15 is not shown approximately segment-shaped flat opaque shielding plate, comparable to Shielding plate 34 of FIG. 3, is installed.

It is also conceivable with reference to FIG. 1 that instead of the two light source positions (each at L, solid line, dashed line) two or more light-emitting diodes (LEDs) along a straight line or even as a whole array of closely spaced LEDs in the light exit plane can be arranged. By alternately switching on the LEDs can be indirectly a displacement Z, a multiple of it or else differently directed or running displacement paths within the Achieve light exit level E. By these measures can therefore without a mechanical adjustment a light control can be made.

The same advantages of glare-freeness also occur in an inventive Recessed wall luminaire on. To do this, you put in context with Fig. 1, only that instead of the reference letter B for the bottom of the reference letter W for the wall and instead of the reference letter W for the wall of the reference letter B for the ground.

The schematic representation of FIG. 2 is based on the representation However, in Fig. 2, the both in solid and in Dashed lines represented light source L approximately corresponding to its actual shape shown. The lamp L has a glass lamp bulb 19, a Burner 20 and base pins 21 on. The cylinder axis y of the glass lamp bulb 19 lies in the light exit plane E.

The constructive representations corresponding to FIGS. 3-6 are in themselves understandable without extensive additional explanations. The following is still added:

According to the to be placed on a wall or floor installation mechanical requirements, the reflector lights 10 each have a stable Luminaire housing 21 made of die-cast metal or of a suitable Plastic on. The housing 21 includes a cable bushing 22, an electrical Connecting device 23 and a mounting plate 24 for mounting an approximately cup-like inner housing 25, with which the parabolic reflector 11th is bolted to its apex S.

The light source L shown in Fig. 3 is located at the focal point F. As a result, the light beams P orthogonally pass through the light passing plane E. However, it is conceivable that the exiting light rays (cf. Light rays V in Fig. 1) downwardly inclined towards the bottom B out when the light source L is shifted upward.

For this purpose, an approximately consolartiger bulb holder 26 is provided, on which also the opaque shield 16 movement uniformly is held. The bulb holder 26 also takes the socket fitting 27 for the light source L on.

If one in a threaded bushing 29 on the mounting plate 24th held clamping screw 28 solves, you can the bulb holder 26 along shift its adjusting slots 30 and 31 upwards by the amount Z, whereupon a deflection of the light rays to the ground B takes place.

Outside the reflector 11, the wall-mounted reflector lamp 10 As shown in FIGS. 3 and 4, a sculpture lens 32, which for a scattering of the from the parabolic reflector 11 leaking light provides. The sculpture lens 32 is enclosed by a seal 33, which in the upper region of the reflector 11 is pulled down to a contact surface for an approx segment-like opaque light shielding plate 34 to offer.

Fig. 4 shows the lamp 10 according to FIG. 3 in a relation to FIG. 3 to 90 ° pivoted mounting position. Fig. 3 is obtained when the viewer in the Representation of FIG. 3 follows the direction of view designated IV.

The ground-mounted reflector lamp 10 according to FIGS. 5 and 6 differs except by their purpose and their other mounting position of the lamp according to FIGS. 3 and 4 only in that in addition a Color filter glass plate 35 and above the sculpture lens 32 a tread-resistant glass plate 15 is provided.

According to Fig. 5, the light source L is in its focal position, so the light beams P intersect the light transmission plane E orthogonally.

With reference to FIG. 5, it is again conceivable that the light beams (cf. Light rays V as shown in FIG. 1) are deflected towards the wall W, if after Loosen the clamping screw 28 of the bulb holder 26 from the focal point F and the wall W away according to the shift measure Z shifted to the left become.

Fig. 6 shows the lamp according to Fig. 5 in a pivoted by 90 ° Position approximately corresponding to the view direction arrow designated VI in Fig. 5, which, for example, against the top plate 36 of the opaque Shield 16 is directed.

Claims (24)

1. Reflector luminaire (10), in particular a floor-, ceiling- or wall-mounted reflector luminaire, comprising a parabolic reflector (11), at the focal point (F) of which a light source (L) is to be disposed, characterized in that the parabolic reflector (11) acts in a light-directing manner substantially only between its apex (S) and a light emergence plane (E), which extends through its focal point (F) and vertically cuts the axis of symmetry (x) of the parabolic reflector (11), that the light emerging from the light source (L) radiates towards the reflector (11) only between the light emergence plane (E) and the apex (S), and that the light source (L) is disposed in the light emergence plane (E) so as to be translationally displaceable or translationally displaced relative to the focal point (F).
2. Reflector luminaire according to claim 1, characterized in that the light source (L) is to be releasably locked in each displaced position.
3. Reflector luminaire according to claim 1 or according to claim 2, characterized in that the light source (L) is displaceable along a straight line.
4. Reflector luminaire according to one of claims 1 to 3, characterized in that the light source (L) at its side remote from the apex (S) of the reflector (11) is overlapped by an opaque shield (16).
5. Reflector luminaire according to claim 4, characterized in that the shield (16) is curved, such as e.g. curved in the shape of a hemisphere or half of a circular cylinder.
6. Reflector luminaire according to claim 5, characterized in that the free edges (R) of the shield (16) are disposed substantially in the light emergence plane (E).
7. Reflector luminaire according to one of claims 4 to 6, characterized in that the inner surface (37) of the shield (16) facing the light source (L) is matt or black, in particular matt black.
8. Reflector luminaire according to one of claims 4 to 7, characterized in that the light source (L) radiates substantially in all directions.
9. Reflector luminaire according to one of claims 1 to 8, characterized in that the light source (L) comprises an approximately circular-cylindrical lamp bulb (19), such as a glass lamp bulb or the like, that the cylinder axis (y) of the glass lamp bulb (19) is disposed substantially in the light emergence plane (E), and that the opaque shield (16) overlapping the light source (L) is mounted at least indirectly laterally (at 17) on the reflector (11).
10. Reflector luminaire according to claim 9, characterized in that the opaque shield (16) is mounted at least indirectly at one end laterally (at 17) on the reflector (16).
11. Reflector luminaire according to one of claims 4 to 10, characterized in that the light source (L) optionally including its lampholder fitting (27) is disposed so as to be relatively displaceable (by Z) in relation to the opaque shield (16) or that the light source (L) including its lampholder fitting (27) and including the opaque shield (16) is disposed so as to be relatively displaceable (by Z) in relation to the reflector (11).
12. Reflector luminaire according to one of claims 1 to 11, characterized in that the opaque shield (16), in view of the displacement distance (Z) of the light source (L), is greater than the light source (L).
13. Reflector luminaire according to one of claims 1 to 12, characterized in that a light-transmitting transparent, in particular flat cover plate (15) is disposed at the side of the reflector (11) remote from the reflector hollow side and the light source (L).
14. Reflector luminaire according to one of claims 1 to 13, characterized in that a light-transmitting transparent, in particular flat prismatic panel (32) is disposed at the side of the reflector (11) remote from the reflector hollow side and the light source (L).
15. Reflector luminaire according to claim 14, characterized in that the prisms are turned towards the reflector hollow side.
16. Reflector luminaire according to one of claims 1 to 15, characterized in that the prisms form rectilinearly extending ribs.
17. Reflector luminaire according to claim 16, characterized in that the ribs have a cross section in the shape of e.g. a triangle or a graduated circle.
18. Reflector luminaire according to claim 16 or according to claim 17, characterized in that the apex lines of the prism ribs extend parallel to the direction (Z) of translational displacement of the light source (L).
19. Reflector luminaire according to one of claims 1 to 18, characterized in that the light source comprises at least one luminescent diode - LED.
20. Reflector luminaire according to claim 19, characterized in that a plurality of luminescent diodes, closely joined together, form a common light source.
21. Reflector luminaire according to claim 19 or according to claim 20, characterized in that a plurality of luminescent diodes are disposed along a curve or along a straight line.
22. Reflector luminaire according to claim 20 or according to claim 21, characterized in that, of the plurality of luminescent diodes disposed e.g. along a curve or along a straight line, individual ones or several are operable.
23. Reflector luminaire according to one of claims 13 to 22, characterized in that a receiver (14) for the cover plate (15) and/or for the prismatic panel (32) is provided adjoining the reflector (11) at the side of the reflector (11) remote from the reflector hollow side and the light source (L).
24. Reflector luminaire according to claim 23, characterized in that the mounting means for the opaque shield (16) penetrate the receiver (14) in at least one cutout (17).

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