EP3088795A1 - Lighting device - Google Patents

Abstract

Elongated lighting device (100), in particular continuous-line luminaire, comprising: at least one light source; at least one first optical arrangement (110) which is arranged in the emission direction of the light source behind the light source; at least one separate second optical arrangement (10), which is arranged in the emission direction of the light source behind the first optical arrangement (110) releasably on the lighting device (100), in such a way that the light emerging from the first optical arrangement (110) partially can enter the second optical arrangement (10), so that the lighting device (100) can emit light from the first optical arrangement (110) and light from the second optical arrangement (10).

Description

1. Field of the invention

The present invention relates to an elongated lighting device, in particular a continuous line luminaire, and an optical arrangement for releasable attachment to an elongate lighting device.

2. Background

From the prior art, a variety of elongated lighting devices are known, for example in the form of elongated continuous line lights with elongated fluorescent tubes or elongated LED arrays. The known lighting devices are typically constructed or assembled by means of individual lighting modules having a predefined length. In addition, such lighting devices often include optical arrangements, such as reflectors or frosted glass panes, in order to be able to emit a directed or diffused light through the lighting device.

Furthermore, it is known in the prior art that individual lighting modules of the elongated lighting device are subsequently removed and can be replaced by other lighting modules which have a different emission characteristic. In this context, it is known in particular to replace one or more of the lighting modules with elongate light sources by lighting modules with light point sources, such as radiator modules, spot light modules or the like, in order to be able to provide corresponding illumination in individual areas.

After the individual lighting modules of the elongated lighting device, however, often have a predefined length and at least one such light module must be removed for replacement, can result from the replacement of the lighting modules unwanted lighting gaps that adversely affect the lighting impression of the elongated lighting device.

In addition, the replacement of the lighting modules is relatively complex, especially since in this case the electrical contacts of the light module to be replaced must first be removed and reapplied to the light module to be used. In addition, the electrical contacts often also arranged only at predefined positions on the elongated lighting device, which further limits the positioning options for the alternative lighting modules.

Based on this prior art, the present invention has the object to provide an elongated lighting device on which in a simple manner in individual areas a modified emission, preferably a radiator function, can optionally be provided.

These and other objects, which will become apparent upon reading the following description or which will be recognized by those skilled in the art, are achieved by the subject-matter of the independent claims. The dependent claims further form the central idea of the present invention in a particularly advantageous manner.

3. Detailed description of the invention

An elongate lighting device according to the invention, in particular a continuous-line luminaire, comprises: at least one light source; at least one first optical arrangement, which is arranged in the emission direction of the light source (seen) behind the light source; at least one separate second optical arrangement, which is arranged in the emission direction of the light source (seen) behind the first optical arrangement detachably on the lighting device, in such a way that the light emerging from the first optical arrangement can partially enter the second optical arrangement, so in that the lighting device can emit light from the first optical arrangement and light from the second optical arrangement.

In other words, the present invention proposes to detachably arrange a second, separate optical arrangement on a first optical arrangement of the elongate lighting device, for example a reflector arrangement, a diffusing screen or another diffuser, and, unlike the known solutions, no longer replace the lighting modules , The term of the second optical arrangement is to be understood broadly and includes not only optical elements, such as lenses, light guide, but also housing, fasteners and the like. In particular, the second optical arrangement means the entire unit which can be arranged on the elongate lighting device.

In the simplest embodiment, the second optical arrangement is a housing with at least one optical element, which in Longitudinal extension at any position on the elongated lighting device can be clipped. As a result, the light emitted by the light source of the elongate lighting device can be quasi branched off and guided through the optical element of the second optical arrangement. The optical element of the second optical arrangement, for example a converging lens or a Fresnel lens, is preferably selected such that bundled light output by the second optical arrangement is possible in order to be able to additionally provide at least one radiator function on the elongate lighting device.

The detachable attachment of the second optical arrangement in the beam path behind the first optical arrangement, instead of an exchange of lighting modules, has the particular advantage that the existing lighting device does not need to be structurally changed in order to provide a region with a modified radiation characteristic can. Also, no electrical contacts are necessary for the second optical arrangement, since the second optical arrangement uses the radiated light of the elongated lighting device and does not comprise its own active light sources. In comparison to the previously known solutions, an elongated lighting device with a further emission characteristic, in particular a radiator function, can thus be provided in a simple manner and this while avoiding the disadvantages described above.

Preferably, the elongated lighting device comprises a housing in which the at least one light source and the at least one first optical arrangement are fixed, wherein the light source of the elongated lighting device is preferably an elongated LED array or an elongate fluorescent tube.

It is particularly preferred that the second optical arrangement on the housing of the elongate lighting device or on the first optical arrangement is detachably arranged or can be arranged. In this context, it is further preferred that the second optical arrangement has at least one latching / spring element in order to releasably connect it to a corresponding latching / spring element of the housing and / or the first optical arrangement. Furthermore, it is particularly preferred that the latching / spring element of the housing and / or the first optical arrangement extends substantially over the entire longitudinal extension of the elongate lighting device, so that the second optical arrangement can be arranged detachably substantially over the entire longitudinal extent of the elongate lighting device is. The locking / spring elements are preferably designed as tongue and groove connections, as clip connections and / or as spring pin connections.

Advantageously, the second optical arrangement in the longitudinal extent of the elongated lighting device is slidably disposed on the housing and / or on the first optical arrangement. This can be done for example by an over the entire longitudinal extent of the elongated lighting device provided undercut / detent groove on which the second optical arrangement can be arranged by means of correspondingly formed locking means.

Furthermore, it is particularly preferred that the second optical arrangement and / or the lens element of the second optical arrangement is arranged rotatable and / or tiltable in order to be able to change the light emission direction of the light emerging from the second optical arrangement. Such mobility can be provided in particular by turning or tilting mechanisms. For example, the lens element may be a Fresnel lens, which is rotatably attached to the second optical arrangement, for example in the housing of the second optical arrangement.

The second optical arrangement preferably comprises light-guiding means, such as at least one reflector surface, and a lens element adapted to guide the light entering the second optical arrangement to the lens element. In particular, reflective coatings / surfaces can be provided on or in the housing of the second optical arrangement in order to guide the light obtained from the light source of the elongate lighting device to the optical element of the second optical arrangement. Alternatively or additionally, it is possible to provide further light-conducting means, such as lens arrangements, prisms, optical waveguides and the like in the second optical arrangement.

The second optical arrangement or the housing of the second optical arrangement is preferably substantially funnel-shaped, cylindrical or rod-shaped. In a substantially funnel-shaped embodiment, it is particularly preferred that this is a funnel shape with a rectangular base surface, which corresponds to the surface of the elongated lighting device on which the second optical arrangement is arranged on the elongate lighting device / is. In a substantially cylindrical design of the second optical arrangement, the possibility exists of the optical element of the second optical Arrangement, for example, designed as a cylindrical or rod-shaped light guide, such form and rotatably arranged in the cylinder, that a light output can be carried out in dependence of the angular positioning of the optical element. Additionally or alternatively, in the case of a cylindrical design of the second optical arrangement, it is also possible to mount the entire arrangement rotatably on the elongate lighting device and to vary a light output in accordance with the angular positioning of the second optical arrangement.

The light entry surface of the second optical arrangement, at which light enters from the first optical arrangement into the second optical element, preferably has a substantially rectangular shape when viewed in plan view, the light exit area of the second optical arrangement, at which light emerges from the second optical arrangement or is guided to the lens element of the second optical arrangement, seen in plan view preferably has a substantially circular shape.

Furthermore, the present invention relates to a second optical arrangement described above, wherein the optical arrangement is arranged to be arranged on the elongated lighting device comprising at least one light source and a first optical arrangement, releasably attached to the lighting device in the emission direction behind the first optical arrangement in such a way that the light emerging from the first optical arrangement can partially enter the second optical arrangement so that the lighting device can emit light from the first optical arrangement and emit light from the second optical arrangement.

4. Description of a preferred embodiment

Figur 1

eine schematische Ansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen zweiten optischen Anordnung, die an einer länglichen Leuchtvorrichtung lösbar befestigt werden kann;

Figur 2

eine schematische Ansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen länglichen Leuchtvorrichtung, an der die zweite optische Anordnung aus Figur 1 befestigt ist;

Figur 3

eine schematische Teilansicht der in Figur 2 gezeigten länglichen Leuchtvorrichtung;

Figur 4

eine schematische Teilansicht der in Figur 2 gezeigten länglichen Leuchtvorrichtung.

Hereinafter, a detailed description of the figures will be given. It shows:

FIG. 1

a schematic view of a preferred embodiment of a second optical arrangement according to the invention, which can be releasably attached to an elongated lighting device;

FIG. 2

a schematic view of a preferred embodiment of an elongated lighting device according to the invention, on which the second optical arrangement of FIG. 1 is attached;

FIG. 3

a schematic partial view of in FIG. 2 shown elongated lighting device;

FIG. 4

a schematic partial view of in FIG. 2 shown elongated lighting device.

FIG. 1 shows a schematic view of a preferred embodiment of a second optical arrangement 10 according to the invention, which in the FIGS. 2 to 4 is releasably secured to an elongated lighting device 100.

The preferred embodiment of the second optical arrangement 10 comprises a substantially funnel-shaped main body 11, wherein a lens element 12 is arranged in the form of a Fresnel lens on a lower side provided for emitting light, which bundles the light and emits with a lens-dependent angle to the vertical.

On the opposite side of the lens element 12, the optical arrangement 10 has two opposing locking lugs 13, with which the optical arrangement 10 at the in the FIGS. 2 to 4 shown elongated lighting device 100 can be releasably secured. Incidentally, the upper side of the optical device 10 is formed open so that light from the elongated lighting device 100 can enter the optical device 10 in this region.

As in FIG. 1 can be clearly seen, the light entry surface formed in the upper region, can enter light from the elongated lighting device 100 in the optical assembly 10, seen in plan view formed substantially rectangular. The light exit surface, on which light can exit from the optical arrangement 10 or from the lens element 12, is substantially circular in plan view. The lens element 12 bundles the light entering the optical arrangement 10 such that the optical arrangement 10 is perceived as light point sources, such as a radiator module or a spotlight module, and can be used accordingly.

In the interior or on the optical arrangement 10 (preferably in the base body 11 of the optical arrangement 10), further optical elements, such as a reflector arrangement, a lens arrangement or other light-guiding elements can be provided, which serve to light the light entering at the upper light entry surface up to the lens element 12 to lead it out of the optical arrangement can escape. The lens element 12 is preferably rotatably arranged on the base body 11, so that the exact light emission direction of the radiation cone can be changed accordingly. In this context, it may be advantageous to provide further pivoting and / or tilting devices on the optical arrangement 10 or on the lens element 12 in order to be able to vary the light emission direction even further.

The illustrated substantially rectangular shaped light entry surface of the optical arrangement 10 represents a particularly preferred form of the light entry surface, as this can be done by a particularly simple attachment of the light entry surface on the elongated lighting device 100. As an alternative to the substantially funnel-shaped design of the optical arrangement 10 with the lens element 12 arranged on the light exit side, it is also possible to make the optical arrangement and / or the lens element essentially cylindrical, for example by means of cylindrical or rod-shaped light-guiding elements. In this case, the optical arrangement or the lens element of the optical arrangement can be arranged to be rotatable so that a light emission can occur depending on the angular positioning of the lens element or the optical arrangement.

Hereinafter, a preferred embodiment of an elongate lighting device 100 according to the invention, in which the in FIG. 1 shown optical assembly 10 is attached, in connection with the FIGS. 2 to 4 explained. The same parts are provided with the same reference numerals.

As in the FIGS. 2 to 4 As can be clearly seen, the elongate lighting device 100 comprises, on the light exit side, an optical arrangement 110 in the form of diffuser elements. Alternatively or additionally, the elongate lighting device 100 may comprise further optical elements / devices, such as, for example, reflector arrangements, diffusing screens, milk glass panes or the like. The elongated lighting device 100 further comprises at least one elongated light source (not shown) provided behind the optical assembly 110. The optical arrangement 110 and the at least one light source are arranged in a housing 113 of the elongate lighting device 100.

As in the FIGS. 2 to 4 can also be seen well, the elongated lighting device 100 comprises two opposing locking grooves 111, in which the correspondingly formed locking lugs 13 of the optical assembly 10 is engaged can be and thus the optical assembly 10 can be attached to the elongated lighting device 100. The latching grooves 111 of the elongated lighting device 100 extend substantially over the entire longitudinal extent of the elongated lighting device 100, so that the positioning of the optical arrangement 10 is essentially freely selectable.

Alternatively or in addition to the detent connections 13, 111 shown, other detent / spring element, tongue and groove connections, clip connections or spring pin connections can be provided in order to detach the optical arrangement 10 to the housing 113 or to the optical arrangement 110 the elongated lighting device 100 to connect.

The detachable attachment of the optical arrangement 10 in the beam path behind the optical arrangement 110 of the elongated lighting device 100 thus provides an easy way to provide an elongated lighting device 100 with an additional radiation characteristic without having to structurally modify the existing lighting device. Also, no electrical contacts are necessary because the optical assembly 10 does not require active light sources and utilizes only the radiated light of the elongated light emitting device 100. As a result, an elongated lighting device with a further emission characteristic, in particular a radiator function, can thus be provided in a simple manner and this while avoiding the known disadvantages. It is also possible to retrofit already built-in elongated lighting devices in a simple way with an additional emission characteristics.

The present invention is not limited to the foregoing embodiment as long as it is encompassed by the subject matter of the following claims. In particular, it should be noted that the present invention is not limited to any particular form of the second optical arrangement.

Claims (16)

Elongated lighting device (100), in particular strip light, comprising: at least one light source; - At least a first optical arrangement (110) which is arranged in the emission direction of the light source behind the light source; - At least one separate second optical arrangement (10) which is arranged in the emission direction of the light source behind the first optical arrangement (110) releasably on the lighting device (100), in such a way that the light emerging from the first optical arrangement (110) may partially enter the second optical assembly (10) so that the lighting device (100) can emit light from the first optical assembly (110) and light from the second optical assembly (10). An elongated lighting device (100) according to claim 1, wherein the lighting device (100) comprises a housing (113) in which the at least one light source and the at least one first optical arrangement (110) are arranged. An elongated lighting device (100) according to any one of claims 1 or 2, wherein the light source is an elongated LED array or an elongate fluorescent tube, and / or
wherein the first optical arrangement (110) comprises a diffuser element, in particular a diffusing screen, a reflector arrangement. An elongated light-emitting device (100) according to one of the preceding claims, wherein the second optical arrangement (10) bundles and directs the light entering from the first optical arrangement (110), in particular as a directed light cone, and / or
wherein the second optical assembly (10) comprises at least one lens element (12), the second optical assembly (10) further preferably including light guiding means, such as a reflector assembly, configured to fit into the second optical assembly (10 ) to lead light to the lens element (12), wherein the lens element (12) of the second optical arrangement (10) preferably comprises a Fresnel structure. Elongated lighting device (100) according to one of the preceding claims, wherein the second optical arrangement (10) is substantially funnel-shaped, cylindrical or rod-shaped. An elongated light-emitting device (100) according to any one of the preceding claims, wherein a light entrance surface of the second optical assembly (10) at which light enters from the first optical assembly (110) into the second optical assembly (10) is substantially rectangular in plan view and / or wherein a light exit surface of the second optical arrangement (10), at which light emerges from the second optical arrangement (10) or is led to the lens element (12) of the second optical arrangement (10), substantially in plan view Has circular shape. An elongated lighting device (100) according to one of the preceding claims, wherein the second optical arrangement (10) and / or the lens element (12) of the second optical arrangement (10) is arranged rotatable and / or tiltable in order to control the light emission direction of the second to be able to change the optical arrangement (10) of emerging light. An elongated light-emitting device (100) according to one of the preceding claims, wherein the second optical arrangement (10) is detachably arranged on the housing (113) of the elongate lighting device (100) or on the first optical arrangement (110),
wherein the second optical arrangement (10) preferably has at least one latching / spring element (13) for releasably releasing the second optical arrangement (10) with a corresponding latching / spring element (111) of the housing (113) and / or the first optical system To connect arrangement (110)
wherein preferably the detent / spring elements (111) of the housing (113) and / or the first optical arrangement (110) extends substantially over the entire longitudinal extent of the elongate lighting device (100), so that the second optical arrangement (10) in Substantially on the entire longitudinal extension of the elongated lighting device (100) can be arranged detachably, wherein preferably the latching / spring elements (13, 111) are designed as tongue and groove connections, as clip connections and / or as spring pin connections. An elongated light-emitting device (100) according to one of the preceding claims, wherein the second optical arrangement (10) is arranged so as to be longitudinally slidable on the housing (113) and / or on the first optical arrangement (110). An optical arrangement (10) for attachment to an elongate lighting device (100), in particular to a continuous line luminaire, wherein the optical arrangement (10) is arranged to be connected to the elongate lighting device (100), the at least one light source and a first optical arrangement (110 ), in the emission direction behind the first optical arrangement (110) to be detachably arranged on the lighting device (100), in such a way that the light emerging from the first optical arrangement (110) can partially enter the optical arrangement (10) such that the lighting device (100) can emit light from the first optical arrangement (110) and light from the optical arrangement (10). An optical arrangement (10) according to claim 10, wherein the optical arrangement (10) is set up to focus and direct the light entering from the first optical arrangement (110), in particular as a directed light cone, and / or wherein the optical arrangement (10). 10) comprises at least one lens element (12) and preferably light guiding means, such as at least one reflector surface, which are designed to be able to guide the light entering the optical arrangement (10) to the lens element (12), wherein preferably the lens element (12 ) of the optical assembly (10) comprises a Fresnel structure. Optical arrangement (10) according to one of claims 10 to 11, wherein the optical arrangement (10) is substantially funnel-shaped, cylindrical or rod-shaped. An optical assembly (10) according to any one of claims 10 to 12, wherein a light entrance surface of the optical assembly (10) at which light from the first optical assembly (110) can enter the optical element (10) is substantially one in plan view Has a rectangular shape, and / or wherein a light exit surface of the optical assembly (10), can escape at the light from the optical assembly (10) or to the lens element (12) of the optical assembly (10) can be seen in plan view substantially one Has circular shape. Optical arrangement (10) according to any one of claims 10 to 13, wherein the optical arrangement (10) and / or the lens element (12) of the optical arrangement (10) is arranged rotatable and / or tiltable to the light emission direction of the optical Arrangement (10) to be able to change exiting light. An optical assembly (10) according to any one of claims 10 to 14, wherein the optical assembly (10) is detachably mountable to a housing of the elongated light emitting device (100) or to the first optical assembly (110).
wherein the optical arrangement (10) preferably comprises at least one latching / spring element (13) for releasably releasing the optical arrangement (10) with a corresponding latching / spring element (111) of the housing (113) and / or the first optical arrangement (11). 110), wherein preferably the at least one latching / spring element (13) is designed as a spring-groove connection, as a clip connection and / or as a spring pin connection. An optical arrangement (10) according to any one of claims 10 to 15, wherein the optical arrangement (10) is slidable in longitudinal extension on the housing (113) and / or on the first optical arrangement (110) can be arranged.

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