LIGHTING ARRANGEMENT COMPRISING A LENS BODY

Abstract

A lighting arrangement 100, comprising an elongated lens body 110, extending in a length direction, L, and being defined by a transversely extending and mutually opposing first end surface, E1, and second end surface, E2, and a first side surface, S1, a second side surface, S2, and a third side surface, S3. Each side surface connects the first end surface with the second end surface. The lens body comprises at least one recess 120 arranged along the length direction and only at at least one of the first side surface and second side surface, wherein the first side surface is oriented at an angle with the second side surface, wherein 60<=<=120. The lighting arrangement further comprises at least one array 130 of a plurality of light emitting diodes 140, LEDs, arranged in at least one of the at least one recess.

Claims

1. A lighting arrangement, comprising an elongated lens body, extending in a length direction, L, and being defined by a transversely extending and mutually opposing first end surface, E.sub.1, and second end surface, E.sub.2, and a first side surface, S.sub.1, a second side surface, S.sub.2, and a third side surface, S.sub.3, each side surface connecting the first end surface with the second end surface, wherein the lens body comprises at least one recess arranged along the length direction and only at least one of the first side surface and second side surface, and wherein the first side surface is oriented at an angle, , with the second side surface, wherein 60<=<=120, and at least one array of a plurality of light emitting diodes, LEDs, arranged in at least one of the at least one recess, wherein an extension of the first side surface extends beyond an edge, C, between the first side surface, S1, and the second side surface, S2, and is configured to be bent towards, and attached to, at least one of the lens body and the second side surface, S2.

2. The lighting arrangement according to claim 1, wherein the at least one array of a plurality of LEDs constitutes a continuous linear light source.

3. The lighting arrangement according to claim 1, wherein at least one of the first side surface, S.sub.1, and the second side surface, S.sub.2, is at least partially reflective.

4. The lighting arrangement according to claim 1, further comprising at least one fastening element arranged on at least one of a first (W.sub.1) and second outer side (W.sub.2) of the lens body of at least one of the first side surface, S.sub.1, and the second side surface, S.sub.2.

5. The lighting arrangement according to claim 1, comprising at least one element constituting a linear structure and arranged in at least one of the at least one recess, wherein the at least one element partially encloses the at least one array of a plurality of LEDs and, in a cross section, P, of the lighting arrangement along the length direction, L, extends in the cross section, P, to the lens body, whereby the at least one element provides a spacing, A, in the cross section, P, between the lens body and the at least one array of a plurality of LEDs, and wherein the linear structure extends in the length direction, L.

6. The lighting arrangement according to claim 5, wherein at least one of the at least one element is at least partially reflective.

7. The lighting arrangement according to claim 1, further comprising at least one of (i) a first set of at least two adjacent arrays of a plurality of LEDs and (ii) a second set of at least two adjacent arrays of a plurality of LEDs, wherein at least one of the first set of at least two adjacent arrays of a plurality of LEDs is arranged within the lens body in the at least one recess arranged along the first side surface, S.sub.1, and the second set of at least two adjacent arrays of a plurality of LEDs is arranged within the lens body in the at least one further recess arranged along the second side surface, S.sub.2, is fulfilled.

8. The lighting arrangement according to claim 1, comprising a control unit configured to control at least one of the at least one array of a plurality of LEDs independently.

9. The lighting arrangement according to claim 1, further comprising a single recess arranged along the first side surface, S.sub.1, and a single array of a plurality of LEDs, wherein the single array of a plurality of LEDs is arranged within the lens body in the single recess, and the second side surface, S.sub.2, is at least partially reflective.

10. The lighting arrangement according to claim 1, comprising at least two arrays of a plurality of LEDs, wherein at least one first array of a plurality of LEDs is arranged to emit first light, and at least one second array of a plurality of LEDs is arranged to emit second light, wherein the first light and the second light are different.

11. The lighting arrangement according to claim 1, wherein the lighting arrangement is flexible.

12. The lighting arrangement according to claim 1, wherein, in a cross section, P, of the lighting arrangement along the length direction, L, the lens body is further defined by an arc, D, between a first end point, Z.sub.1, of the first side surface, S.sub.1, and a second end point, Z.sub.2, of the second side surface, S.sub.2.

13. The lighting arrangement according to claim 1, wherein the second side surface, S.sub.2, is perpendicular to the first side surface, S.sub.2, whereby the first side surface, S.sub.1, and the second side surface, S.sub.2, define and span the lens body to have the shape of a quarter-circular cylinder.

14. The lighting arrangement according to claim 1, further comprising at least one incision provided perpendicular to the length direction, L, and along the length direction, L, in at least one of the lens body and the second side surface S2.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] This and other aspects of the present invention will now be described in more detail, with reference to the appended drawings showing embodiment(s) of the invention.

[0028] FIGS. 1a and 1b schematically show a lighting arrangement according to exemplifying embodiments of the present invention in exemplifying installments of the present invention,

[0029] FIG. 2 schematically shows a lighting arrangement according to an exemplifying embodiment of the present invention, comprising an array of a plurality of LEDs,

[0030] FIG. 3 schematically shows a lighting arrangement according to an exemplifying embodiment of the present invention,

[0031] FIG. 4 schematically shows a lighting arrangement with a control unit according to an exemplifying embodiment of the present invention, and

[0032] FIG. 5 schematically shows a lighting arrangement according to an exemplifying embodiment of the present invention.

DETAILED DESCRIPTION

[0033] FIGS. 1a and 1b are schematic views of a lighting arrangement 100 according to exemplifying embodiments of the present invention in exemplifying installments. It should be noted that the purpose of FIGS. 1a and 1b is to provide an increased understanding of the concept of the lighting arrangement 100, and that a more detailed description of the features of the lighting arrangement 100 is provided in FIGS. 2-5 and the associated text.

[0034] In FIG. 1a, the lighting arrangement 100 is installed underneath a (kitchen) cupboard 101, whereas in FIG. 1b, (two) lighting arrangements 100 are installed underneath respective shelves 102. It should be noted that other arrangements and/or installments of the lighting arrangement 100 than those illustrated are feasible. By the lighting arrangement 100, the features of which are presented in more detail in the following, a (targeted) light output 103 may be provided. The light output 103 is asymmetrical in a direction transverse to a length direction L of the elongated lighting arrangement 100.

[0035] FIG. 2 is a schematic view of a lighting arrangement 100, comprising at least one array 130 of a plurality of LEDs 140. LED lamps of this type are very beneficial due to being aesthetically attractive as well as having a reduced power consumption, having a longer operational lifespan and a higher efficiency in regard to converting electrical energy into light energy in addition to providing design flexibility.

[0036] The lighting arrangement 100 comprises a first side surface, S.sub.1, and a second side surface, S.sub.2, wherein the second side surface, S.sub.2, forms an angle, , wherein 60<=<=120, with respect to the first side surface, S.sub.1. The angle, , is preferably 70<<110, more preferably 80<<100, and most preferably 88<<92. According to the embodiment shown in FIG. 2, =90.

[0037] The lighting arrangement 100 further comprises at least one array 130 of a plurality of LEDs 140, and a single array 130 of LEDs 140 is shown in FIG. 2. The LEDs 140 are arranged in an array, i.e. a linear configuration or arrangement, along a length direction, L. Thus, the lighting arrangement 100 provides an aligned light source. The plurality of LEDs 140 of an array 130 may be placed adjacent to each other with a distance of preferably <=8 mm, more preferably <=4 mm, and most preferably <=2 mm.

[0038] The lighting arrangement 100 further comprises a lens body 110 arranged between the first side surface, S.sub.1 and the second side surface, S.sub.2, whereby the first side surface, S.sub.1, and the second side surface, S.sub.2, define and span the lens body 110. The lens body 110 may comprise an encapsulant (not shown), which in turn may comprise a translucent material. In addition to this, the encapsulant may further comprise a light-scattering material configured to scatter light emitted from the plurality of LEDs 140. Furthermore, the encapsulant may further comprise a color-converting material, such as phosphor, configured to convert light emitted from the plurality of LEDs 140 to light of a desired color temperature. For example, the color-converting material may convert blue light emitted from the plurality of LEDs 140 to white light. By the term encapsulant, it is here meant a material, element, arrangement, or the like, which is configured or arranged to at least partially surround, encapsulate and/or enclose the array(s) 130 of plurality of LEDs 140. By the term translucent material, it is here meant a material, composition and/or substance which is translucent and/or transparent for visible light.

[0039] The lens body 110 comprises at least one recess 120, arranged along at least one of the first side surface, S.sub.1, and the second side surface, S.sub.2. The at least one recess 120 constitutes a hollow which is large enough to at least partially surround and/or enclose at least one array 130 of a plurality of LEDs 140. The recess(es) 120 is (are) preferably large enough to maintain a spacing between the lens body 110 and the at least one array 130 of a plurality of LEDs 140, thus avoiding physical contact between them. To obtain an acceptable light distribution, the at least one array 130 of a plurality of LEDs 140 should preferably not reach past at least one, more preferably neither, of the first side surface, S.sub.1 and the second side surface, S.sub.2. The lighting arrangement 100 further comprises an extension 220 of the first side surface, S1, extending beyond an edge, C, between the first side surface, S1, and the second side surface, S2. The extension 220 of the first side surface, S1, is bent towards and attached to the second side surface, S2 to partially cover the second side surface S2. The extension 220 of the first side surface, S1, may be reflective to hide the incision(s) 210 in at least one of the lens body 110 and the second side surface, S2 and/or to further tune the beam properties of the lighting arrangement.

[0040] FIG. 3 schematically shows a lighting arrangement 100 according to an exemplifying embodiment of the present invention. It should be noted that the lighting arrangement 100 shown in FIG. 3 has many features in common with the lighting arrangement 100 shown in FIG. 2, and it is hereby referred to FIG. 2 and the associated text for an increased understanding of the features and/or functions of the lighting arrangement 100. In FIG. 3, the lighting arrangement 100 comprises a first side surface, S.sub.1, and a second side surface S.sub.2. The first side surface, S.sub.1, and/or the second side surface, S.sub.2, may be at least partially reflective for light. Thus, the first and/or the second side surface(s), S.sub.1, S.sub.2, can be partially or fully reflective for light. The first and/or the second side surface(s), S.sub.1, S.sub.2, may comprise e.g. a reflective coating or a sheet material to obtain the reflection property.

[0041] The lighting arrangement 100 further comprises at least one fastening element 150 arranged on a first outer side W.sub.1 of the first side surface, S.sub.1, i.e. outside the lens body, and/or on a second outer side W.sub.2 of the second side surface, S.sub.2, i.e. outside the lens body. The fastening element 150 enables mounting the lighting arrangement 100 to e.g. a shelf or cupboard. For example, the fastening element 150 may comprise an adhesive layer to facilitate installation of the lighting arrangement 100.

[0042] The lighting arrangement 100 further comprises at least one element 160 constituting a linear structure 170 arranged in at least one of the at least one recess 120, ensuring a spacing, A, between the lens body 110 and the at least one array 130 of a plurality of LEDs 140. The element(s) 160 extend(s) in a cross section, P, of the lighting arrangement 100 along the length direction, L. The spacing, A, enables avoiding physical contact between the lens body 110 and the at least one array 130 of a plurality of LEDs 140 when the lighting arrangement 100 is e.g. being transported in a rolled up mode or during installation. In addition, the spacing, A, further enables avoiding optical contact between the lens body 110 and the at least one array 130 of a plurality of LEDs 140 when the lighting arrangement 100 is installed in e.g. a bended mode. The linear structure 170, which may comprise at least one element 160 and extending in the length direction, L, may extend throughout the at least one recess 120 it is arranged in, or only part of the at least one recess 120. Furthermore, said at least one element 160 may be at least partially reflective. Thus, the at least one element 160 may be partially or fully reflective. The at least one element 160 may comprise e.g. a reflective coating or a sheet material to obtain the reflective property. The shape of the at least one element 160 may be designed to optimize the light distribution from the at least one array 130 of a plurality of LEDs 140. The lighting arrangement 100 further comprises an extension 220 of the first side surface, S1, extending beyond an edge, C, between the first side surface, S1, and the second side surface, S. The extension 220 of the first side surface, S1, is bent towards and attached to the second side surface, S2 to partially cover the second side surface S2. The extension 220 of the first side surface, S1, may be opal to hide the incision(s) 210 in at least one of the lens body 110 and the second side surface, S2 and/or to further tune the beam properties of the lighting arrangement.

[0043] The lighting arrangement 100 comprises the first side surface, S.sub.1, and the second side surface, S.sub.2. It should be noted that it is possible to attach additional components to the first outer side W.sub.1 of the first side surface, S.sub.1, and/or to the second outer side W.sub.2 of the second side surface S.sub.2, e.g. a display, a digital screen or decorative patterns.

[0044] FIG. 4 schematically shows a lighting arrangement 100 according to an exemplifying embodiment of the present invention. It should be noted that the lighting arrangement 100 shown in FIG. 4 has many features in common with the lighting arrangement 100 shown in FIG. 2 and/or FIG. 3, and it is hereby referred to FIG. 2 and/or FIG. 3, and the respective associated text for an increased understanding of the features and/or functions of the lighting arrangement 100. The lighting arrangement 100 comprises a first set 180 of two or more adjacent arrays 130 of a plurality of LEDs 140 and/or a second set 190 of two or more adjacent arrays 130 of a plurality of LEDs 140, wherein the first set 180 of two or more adjacent arrays 130 of a plurality of LEDs 140 may be arranged in a recess 120 arranged along the first side surface, S.sub.1, and the second set 190 of two or more adjacent arrays 130 of a plurality of LEDs 140 may be arranged in a further recess 121 arranged along the second side surface, S.sub.2. The first set 180 may be arranged to emit first light, and the second set 190 may be arranged to emit second light, wherein the first light and the second light are different. By different it is here meant that at least one property of the first set 180 of at least two adjacent arrays 130 of a plurality of LEDs 140 is not shared with the second set 190 of at least two adjacent arrays 130 of a plurality of LEDs 140 such as luminous flux, color temperature and/or color rendering. These different properties may allow the lighting arrangement 100 to display e.g. different color effects in a space or area wherein the lighting arrangement 100 resides.

[0045] The lighting arrangement 100 further comprises a control unit 200 configured to control at least one of the at least one array 130 of a plurality of LEDs 140 independently. The control unit 200 may be connected to the light arrangement 100 by wire or wirelessly. As the control unit may control the array(s) 130 independently, different arrays 130 may have different settings in regard to e.g. luminosity. Furthermore, the control unit 200 may control the beam width and/or the beam angle of the system by controlling the light output of the various array(s) 130 of the plurality of LEDs 140.

[0046] The lighting arrangement 100 further comprises a lens body 110, which, in a cross section, P, of the lighting arrangement 100 along the length direction, L, is further defined by an arc, D, between a first end point, Z.sub.1, of the first side surface S.sub.1 and a second end point, Z.sub.2, of the second side surface S.sub.2.

[0047] FIG. 5 schematically shows a lighting arrangement 100 according to an exemplifying embodiment of the present invention. It should be noted that the lighting arrangement 100 shown in FIG. 5 has many features in common with the lighting arrangement 100 shown in FIGS. 2-4, and it is hereby referred to this (these) figure(s), and the respective associated text, for an increased understanding of the features and/or functions of the lighting arrangement 100. The lighting arrangement 100 comprises a first side surface, S.sub.1 and a second side surface, S.sub.2, wherein the second side surface, S.sub.2, is perpendicular to the first side surface, S.sub.1, whereby the first side surface, S.sub.1, and the second side surface, S.sub.2, define and span a lens body 110 to have the shape of a quarter-circular cylinder. Consequentially, the angle, , may be 90. The shape of the lens body 110 may have a different shape, dimensions and/or size than depicted, such as a quarter of an elliptical cylinder, or slightly smaller/larger than a circular or elliptical cylinder lens.

[0048] The array 130 of plurality of LEDs is embodied as a flexible LED strip and the lens body 110 is made of a light transmissive, flexible material. The lighting arrangement 100 further comprises a plurality of incisions 210 (partially indicated in ghost) provided with a plurality of incisions 210 arranged along the length direction, L, in at least one of the lens body 110 and the second side surface S.sub.2. Each incision 210 extends perpendicular to the length direction, L, and from the second side surface S.sub.2 to the third side surface S.sub.3. The incision(s) 210 may enable linear bending and therefore improving the flexibility of the lighting arrangement 100, thus enabling it to e.g. be wound up on a roll. Even though the lighting arrangement 100 may be flexible to some extent without at least one incision 210, the at least one incision 210 may improve the flexibility.

[0049] The lighting arrangement 100 further comprises an extension 220 of the first side surface, S.sub.1, extending beyond an edge, C, between the first side surface, S.sub.1, and the second side surface, S.sub.2, wherein the extension 220 of the first side surface, S.sub.1, is configured to be bent towards, and attached to, at least one of the lens body 110 and the second side surface, S.sub.2. The extension 220 of the first side surface, S.sub.1, may be bent to hide the incision(s) 210 in at least one of the lens body 110 and the second side surface, S.sub.2. Furthermore, the extension 220 may add stiffness and robustness to the lighting arrangement 100.

[0050] The at least one array 130 of a plurality of LEDs 140 may be arranged within the at least one recess 120 arranged along the first side surface, S.sub.1, and/or the second side 5 surface, S.sub.2, wherein the first side surface, S.sub.1, and/or the second side surface, S.sub.2, has a width, W. The array(s) 130 of a plurality of LEDs 140 may be placed within the at least one recess 120 so that the distance between the array(s) 130 of a plurality of LEDs 140 and the edge, C, is <=W/2.

[0051] The person skilled in the art realizes that the present invention by no means is 10 limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims. For example, one or more of the at least one recess 120, the at least one element 160, the arc, D, of the lens body 110 etc., may have different shapes, dimensions and/or sizes than those depicted/described.