Lighting device and method of manufacturing a lighting device

Abstract

A lighting device (1) is provided. The lighting device (1) comprises a housing (10) and a flexible elongated carrier (20) having a first side (20a) and a second side (20b). The elongated carrier (20) comprises a plurality of first segments (21), each first segment (21) comprising a plurality of solid state lighting elements (25) arranged on the first side (20a) of the elongated carrier (20). Each first segment (21) is arranged at a distance (d1) from a surface (15) of the housing. The elongated carrier (20) further comprises a plurality of second segments (22). Each second segment (22) is at least partially attached to the surface of the housing (15). The first segments (21) and the second segments (22) are alternately arranged in a continuous piece along a longitudinal extension of the elongated carrier (20). The elongated carrier (20) has been bent and / or folded at at least some of the second segments (22) such that, seen from above the surface (15) of the housing (20), the elongated carrier (20) has a shape that coincides with a helical shape.

Description

Technical Field

[0001] This invention relates to a lighting device comprising a flexible elongated carrier, the flexible elongated carrier including a plurality of first segments and a plurality of second segments, each of the plurality of first segments including a plurality of solid-state lighting elements disposed on a first side of the elongated carrier, and each second segment being at least partially attached to the surface of a housing of the lighting device. The invention also relates to a method of manufacturing the lighting device. Background Technology

[0002] Light-emitting diode (LED)-based lighting is increasingly replacing incandescent bulbs in most applications. However, many users still prefer the appearance of incandescent bulbs but still want to enjoy the benefits of switching to LED-based lights and lighting. This has led to solutions for producing LED lights and bulbs that resemble incandescent bulbs, luminaires, and light bulbs, where the wiring filament is replaced with an LED light source. Known concepts include LEDs sealed or covered by components to create the appearance of filaments of various shapes within a transparent or translucent bulb. The LED filament is also connected to an LED module, which may include electrical wiring and / or a power supply. Solutions based on or similar to the above concepts are generally able to produce the desired effect similar to that of incandescent bulbs. However, the appearance of the filament in solutions based on or similar to the mentioned concepts may not be sufficiently similar to that of incandescent bulbs. Furthermore, the production of solutions based on or similar to the mentioned concepts can be expensive or complex to assemble. Therefore, it may be of interest to provide a lighting device that can increase the resemblance to incandescent bulbs and / or reduce the cost and / or complexity of producing lighting devices. Summary of the Invention

[0003] In light of the foregoing discussion, this invention focuses on providing a lighting device that can increase similarity to incandescent lamps and / or reduce the cost and / or complexity of manufacturing lighting devices. Further, this invention focuses on providing a lighting device that can resemble the appearance of a slanted spiral filament found in some incandescent lamps.

[0004] To address at least one of these and other concerns, a lighting device and a method of manufacturing the lighting device according to the independent claim are provided. Preferred embodiments are defined by the dependent claims.

[0005] According to a first aspect of the invention, a lighting device is provided. The lighting device may include a housing and a flexible elongated carrier. The elongated carrier may have a first side and a second side. The elongated carrier may include a plurality of first segments. Each first segment may include a plurality of solid-state lighting elements disposed on a first side of the elongated carrier. Each first segment may be disposed at a distance from the surface of the housing. The elongated carrier may include a plurality of second segments. Each second segment may be at least partially attached to the surface of the housing. The first and second segments may be arranged alternately as a continuous element along the longitudinal extension of the elongated carrier. The elongated carrier may have been bent and / or folded at at least some of the second segments such that, viewed from above the surface of the housing, the elongated carrier has a shape consistent with (e.g., three-dimensional, 3D) a spiral shape.

[0006] According to a second aspect of the invention, a method of manufacturing a lighting device is provided. The method may include providing a housing and providing a flexible elongated carrier. The elongated carrier may have a first side and a second side. The elongated carrier may include a plurality of first segments. Each first segment may include a plurality of solid-state lighting elements disposed on a first side of the elongated carrier. The elongated carrier may include a plurality of second segments. The first and second segments may be arranged alternately as a continuous element along the longitudinal axis of the elongated carrier. The method may include bending or folding the elongated carrier at at least some of the second segments and attaching each second segment at least partially to the surface of the housing such that each first segment is disposed at a distance from the surface of the housing, and such that, viewed from above the surface of the housing, the elongated carrier has a shape consistent with a helical shape.

[0007] The lighting device can be enhanced with a spiral filament appearance by comprising multiple first segments, each including multiple solid-state lighting elements, and each of the first segments being arranged at a distance from the surface of the housing. An elongated carrier is bent and / or folded at at least some of the second segments, such that, viewed from above, the elongated carrier has a shape consistent with a helical shape. Instead of requiring multiple solid-state lighting elements to be mounted at different locations within the lighting device to achieve the spiral filament appearance, the lighting device including the flexible elongated carrier can be bent and / or folded to achieve this, which can reduce production costs and / or complexity. The flexible elongated carrier includes first and second segments, each first segment including multiple solid-state lighting elements, and the second segments are at least partially attached to the surface of the housing such that the first segments are arranged at a distance from the surface of the housing, which can enhance the spiral filament appearance of the lighting device. Alternatively, the lighting device can be a light-emitting diode (LED) filament assembly.

[0008] The term "flexible elongated carrier" refers to, for example, an elongated carrier configured or arranged such that it can be bent and / or folded, or an elongated carrier whose shape is stretchable or adaptable. The terms "first side" and "second side" refer to, for example, an upper side and a lower side, respectively. The term "arranged at a distance from the surface of the housing" means, for example, arranged above the surface of the housing. It should be understood that the term "at least partially attached" can include, for example, one or more portions being attached. The term "alternatingly arranged as a continuous section along the longitudinal extension of the elongated carrier" means, for example, an arrangement such that each first segment has second segments arranged along the longitudinal extension of the elongated carrier, respectively before and after the corresponding first segment. Furthermore, it should be understood that the continuous section can begin and end with either a first segment or a second segment. Thus, an elongated carrier can include one more first segment than a second segment, or an elongated carrier can include one more second segment than a first segment. A plurality of first segments aligned with each other can be understood as the centers of each first segment aligned with each other, wherein the center can be understood as the center, middle, or midpoint along the longitudinal extension of the corresponding first segment. The terms "bending and / or folding" refer to, for example, the second segment being bent and / or folded such that at least a portion of the second segment is flipped. The term "flipped" means, for example, that the first and second sides of the second segment may face a direction opposite to the direction they faced before bending or folding, or that at least a portion of the first and second sides of the second segment face the same direction. The term "shape conforming to a helical shape" means, for example, that the shape may be substantially equivalent to a helical shape, or that the shape may be a part of a helical shape. For example, a shape conforming to a helical shape can be understood as a shape on one side of a plane, where the plane intersects the helical shape. Furthermore, the plane that may intersect the helical shape may be parallel to the axis of the helical shape. Thus, the helical shape may have an axis arranged parallel to a plane or surface, such that two parts of the helical shape are respectively on opposite sides of the plane or surface, and a shape conforming to a helical shape can be understood as either of the two parts of the helical shape. The elongated carrier may have been bent and / or folded at at least some of the second segments such that, viewed from above the surface of the housing, the plurality of first segments are aligned with each other.

[0009] Each or any solid-state lighting element may, for example, include one or more light-emitting diodes (LEDs) and / or (some or more) other types of solid-state lighting elements. Furthermore, each or any solid-state lighting element may, for example, include inorganic LEDs and / or organic LEDs (OLEDs). Each or any solid-state lighting element may, for example, include polymer / polymer LEDs, violet LEDs, blue LEDs, light-pumped phosphor-coated LEDs, and light-pumped nanocrystal LEDs. As used herein, the term "LED" may include LED dies disposed in a housing, which may be referred to as an LED package. Each or any of the plurality of solid-state lighting elements in the first segment may preferably include at least ten LEDs. Additionally, each or any of the second segments may not include any solid-state lighting elements. For example, the second segment may not include any LEDs.

[0010] The lighting device may include one or more other components or parts. Such other components or parts may include, for example, a power supply and / or electrical wiring or conductors, a control unit, a housing, and / or mounting hardware for the various components within the lighting device. The control unit may include, for example, driver circuitry for controlling the power supply to the solid-state lighting element and / or for controlling the operation of the solid-state lighting element. The lighting device may include other circuitry, such as circuitry capable of converting power from the power supply into power suitable for operating or driving the solid-state lighting element. Such circuitry may be capable at least of converting between alternating current and direct current, and converting voltage to a suitable voltage for operating or driving the solid-state lighting element.

[0011] The elongated carrier can be bent and / or folded such that each first segment has a selected (e.g., first) shape when viewed from above the surface of the shell. For example, each of the plurality of first segments may have the same shape, or substantially the same shape, or a similar shape. The selected shape may correspond to a helical shape.

[0012] The spiral can be configured as a coil. Therefore, the elongated carrier may have been bent and / or folded at at least some of the second sections, such that, viewed from above the surface of the shell, the elongated carrier has a shape consistent with a coiled shape. Furthermore, the spiral can be understood as a corkscrew and / or having a coiled shape. A coil is a type of spatial curve having a tangent at a constant angle to a fixed axis.

[0013] The elongated carrier may have been bent and / or folded at at least some of the second segments, such that, viewed from above the surface of the housing, the plurality of first segments are parallel to each other. The second segments may have been bent and / or folded at at least some of the second segments and are at least partially attached to the surface of the housing, such that, viewed from above, the plurality of first segments are parallel to each other. Each first segment can be understood as extending in a plane, wherein the planes of the respective first segments may be parallel to each other.

[0014] At least some of the first segments can be arranged at an angle to the axis of the helix, wherein the angle is between 5 degrees and 60 degrees. According to one example, preferably, at least three segments can be arranged at an angle to the axis of the helix, wherein the angle is between 5 degrees and 60 degrees. Furthermore, the angle can be between 10 degrees and 50 degrees, or between 15 degrees and 45 degrees.

[0015] At least some of the first segments can be arranged at a distance from another first segment. This other first segment can be arranged in the sequence before or after the respective first segment. Viewed from above the surface of the housing, this distance can be in the direction of the longitudinal extension of the respective first segment. Each first segment can be arranged at a distance from another subsequent first segment. For all the plurality of first segments, the distance between two subsequent first segments in the sequence can be substantially equal. This distance is preferably at least 0.8 cm. Furthermore, this distance is preferably less than 3 cm.

[0016] At least some of the first segments can be arranged at a distance from another first segment. This other first segment can be arranged before or after the corresponding first segment in a sequence. This distance can be in a direction parallel to the axis of the helix. This axis can be understood as the helical axis. Furthermore, the helix can be understood as a three-dimensional curve that rotates about the axis at a constant or continuously varying distance while moving parallel to the axis. Additionally, at least three of the first segments can be arranged at a distance from another first segment.

[0017] Each first segment can be arranged at a distance from another first segment, which can be arranged before or after the corresponding first segment in a sequence. This distance can be in a direction parallel to the alignment direction of the plurality of first segments. For all the plurality of first segments, the distance between any two subsequent first segments can be substantially equal. This distance can be measured between the centers of any two subsequent first segments.

[0018] At least some of the second segments can be bent and / or folded at least twice. However, it should be understood that embodiments of the invention are not limited to at least some of the second segments being bent and / or folded twice. For example, at least some of the second segments can be bent and / or folded once, twice, three times, or more. Furthermore, embodiments of the invention are not limited to at least some of the second segments being bent and / or folded, and it should be understood that at least some of the second segments can be rolled, pleated, or folded in half.

[0019] At least some of the second segments can be bent and / or folded at angles between 30 and 60 degrees. Furthermore, at least some of the second segments can be bent and / or folded at angles between 40 and 50 degrees. Additionally, at least some of the second segments can be bent and / or folded at angles substantially 45 degrees. Bending or folding can be understood as bending or folding along an axis or line, which can be understood as a folding axis or folding line. This angle can be defined by the angle between the folding axis and the longitudinal axis of the second segment.

[0020] At least some of the second segments can be bent and / or folded, such that the bending or folding defines at least some of the second segments as a first part, a second part, and a third part, the first part, the second part, and the third part being arranged as a continuous piece along the longitudinal extension of the respective second part. The length of the third part may be greater than the length of the first part. The length of the second part may be greater than the length of the third part. The bending or folding can be understood as a first bending or folding and a second bending or folding. The angle of the first bending or folding may be substantially equal to the angle of the second bending or folding. However, the angle of the first bending or folding may be different from the angle of the second bending or folding.

[0021] Each first segment may have: a first boundary with a second segment arranged in the continuous element preceding the corresponding first segment, and a second boundary with another second segment arranged in the continuous element following the corresponding first segment. At least some of the second segments may be folded such that the distance between the first and second boundaries of each first segment is less than the length of the first segment, wherein the length is in the longitudinal extension of the first segment.

[0022] Multiple first segments can be arranged such that one of the first and second boundaries is arranged substantially along a straight line, and the other of the first and second boundaries is arranged substantially along another straight line. For example, multiple first segments can be arranged such that the first boundary is arranged along a straight line, and the second boundary is arranged along another straight line. The shortest distance between the straight lines can be less than the length of at least some of the first segments extending longitudinally along the respective first segment. Furthermore, the straight lines can be parallel. Furthermore, the straight lines can be parallel to the alignment direction of the multiple first segments. At least some of the multiple first segments can be arranged at an angle to the alignment direction of the multiple first segments. This angle relative to one or both of the straight lines can be between 30 degrees and 90 degrees. Furthermore, this angle relative to the alignment direction can be between 30 degrees and 90 degrees.

[0023] Each first segment can be arranged in an arc shape. In other words, each first segment can be arranged in a curved shape. Furthermore, each first segment can be arranged along the circumference of a circular sector. The term "arc" can be understood, for example, as a partial circle and / or a chord. An arc can have a constant radius. A first side of each first segment can face away from the surface of the shell. Therefore, a second side of each first segment can face the surface of the shell. The midpoint of each first segment extending longitudinally along its respective first segment can be located at a distance from the surface of the shell that is greater than the distance from the surface of the shell to any other point of the corresponding first segment. The boundary of each first segment can be located at a distance from the surface of the shell that is less than the distance from any other point of the corresponding first segment to the surface of the shell. The boundary of each first segment can be located at an equidistant distance from the surface of the shell, wherein this distance can be measured in a direction perpendicular to the surface of the shell.

[0024] Each arc can lie in a plane perpendicular to the surface of the housing. Each first segment can be arranged along the arc of a circular sector, wherein the circular sector is perpendicular to the surface of the housing. Therefore, the planes in which multiple arcs can lie can be parallel to each other. However, it should be understood that the arcs can lie in planes at an angle to the surface, wherein the angle can be between 1 degree and 45 degrees.

[0025] The central angle of a circular sector defined by an arc can be at least 180 degrees. The central angle of a circular sector defined by an arc can be between 200 degrees and 340 degrees.

[0026] The elongated carrier may include a light-transmitting material. The solid-state lighting element included in at least one first sector may be encapsulated by a package comprising a light-emitting material and / or a light-scattering material. The package may include a wavelength-converting material configured to convert at least a portion of the light input therein into light having a selected wavelength range. The elongated flexible carrier may, for example, be constituted of or included within an LED strip.

[0027] For each or any of the first segments, multiple solid-state lighting elements may be encapsulated by a package comprising a luminescent material and / or a light-scattering material. Preferably, the package may cover at least 90% of each first segment encapsulated by the package. Furthermore, the package may provide line emission, line emission, and / or spectral lines.

[0028] Lighting devices that can be understood as LED filament devices can provide LED filament light. The LEDs in the lighting devices can provide LED light. The luminescent material can at least partially convert the LED light into converted light. The converted light and / or LED light can be understood as LED filament light. Furthermore, preferably, the LED filament light can be white light. This white light can have a correlated color temperature in the range of 1800K to 6000K. Furthermore, this white light can preferably have a color rendering index (CRI) of at least 80.

[0029] Each or any first segment may include a plurality of solid-state lighting elements arranged on a second side of an elongated carrier. The plurality of solid-state lighting elements arranged on the second side of the elongated carrier may be arranged in a mirror manner with respect to the plurality of solid-state lighting elements arranged on the first side of the elongated carrier. Therefore, for each or any first segment, for each solid-state lighting element arranged on the first side of the elongated carrier, there may be a solid-state lighting element arranged on the opposite side (second side) of the elongated carrier. Attached Figure Description

[0030] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] Figures 1 to 3 This is a schematic view of a cross-section of a lighting device according to one or more exemplary embodiments of the present invention.

[0032] Figures 4 to 6 This is a schematic view of a lighting device according to an exemplary embodiment of the present invention.

[0033] Figure 7 This is a schematic view of an elongated carrier of a lighting device according to one or more exemplary embodiments of the present invention.

[0034] All accompanying drawings are schematic and not necessarily to scale, and generally only show the parts necessary to illustrate embodiments of the invention, wherein other parts may be omitted or merely implied. Detailed Implementation

[0035] The invention will now be described below with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will convey the scope of the invention to those skilled in the art. In the drawings, unless otherwise specifically indicated, the same reference numerals denote the same or similar parts having the same or similar functions.

[0036] Figure 1 This is a schematic cross-sectional view of a lighting device 1 according to one or more exemplary embodiments of the present invention. The lighting device 1 shown includes a housing 10. Figure 1 The cross-section is perpendicular to the surface 15 of the housing 10. The lighting device 1 shown also includes a flexible elongated carrier 20 having a first side 20a and a second side 20b. The elongated carrier 20 is shown as a diagonal line included within the boundary of the elongated carrier. To understand, the diagonal line is drawn to connect the elongated carrier 20 with... Figure 1 Other features distinguish it and thus enhance understanding. The elongated carrier 20 includes multiple first segments 21 and multiple second segments 22. Figure 1 The diagram shows a first segment 21 and two second segments 22. However, it should be understood that in embodiments of the invention, the elongated carrier 20 may include any number of first segments 21 and second segments 22, and is not limited to this. Figure 1 The exemplary embodiment shown. The first segment 21 and the second segment 22 extend along the longitudinal direction of the elongated carrier 20. Figure 1 Not shown in the image; see example. Figure 7 The elements are arranged alternately as a continuous element. The first section 21 is shown as including a plurality of solid-state lighting elements, schematically indicated by reference numeral 25, wherein the plurality of solid-state lighting elements 25 are arranged along the first section 21 on a first side 20a of the elongated carrier 20. The first section 21 can be understood as a section of the elongated carrier 20 including the plurality of solid-state lighting elements. Figure 1The plurality of solid-state lighting elements 25 can be understood as, for example, a plurality of light-emitting diodes (LEDs) or LED filaments. The plurality of solid-state lighting elements 25 shown can be encapsulated in a package, wherein the package may include a light-emitting material and / or a light-scattering material. The elongated carrier 20 shown includes two boundaries respectively disposed between a first segment 21 and a second segment 22. The boundaries are disposed at a distance d1 from the surface 15, wherein the distance d1 is in a direction perpendicular to the surface 15. The first segment 21 shown is arranged in an arc shape. The arc can be understood as starting at one boundary and ending at the other boundary. The central angle α of the circular sector defined by the arc shown has an angle of substantially 180 degrees (i.e., substantially π radians). The arc lies in a plane of a cross-section perpendicular to the surface 15. The length of the first segment 21 along the arc is greater than the distance between the two boundaries. The length of the first segment 21 can be defined as the arc length of the arc, which can be understood as the central angle α multiplied by the radius of the circular sector defined by the arc. Thus, as Figure 1 As shown, the first segment 21 is arranged along an arc having a central angle α and beginning and ending at two boundaries, respectively. The two second segments 22 shown are at least partially attached to surface 15. To understand, Figure 1 The cross-section shown may only show a portion of the second segment 22. Figure 1 The elongated carrier 20 is shown to be bent or folded twice at each of the second segments 22. For clarity, the bending or folding is indicated by the switching of the diagonal direction of the elongated carrier 20. Each illustrated second segment 22 includes a bend or fold closest to the first segment 21, which is substantially right-angled, such that the portion of the second segment 22 closest to the first segment points away from or upward from the surface 15. Thus, the illustrated second segment 22 has been folded such that the first segment 21 is positioned at a distance d1 from the surface 15. Furthermore, each second segment 22 includes a bend or fold further away from the first segment 21 in a direction along the surface 15 and away from the first segment 21, such bend or folding is such that a portion of the second segment 22 (not shown; see example) Figure 4 and Figure 5 The direction is substantially parallel to surface 15. It should be understood that the second segment 22 may be attached to the surface along the portion of the second segment 22 arranged along surface 15.

[0037] Figure 2 This is a schematic cross-sectional view of a lighting device 1 according to one or more exemplary embodiments of the present invention. It should be noted that... Figure 2 Including, for example Figure 1 The features, elements, and / or functions described in the accompanying drawings and related descriptions are shown. Therefore, for enhanced understanding, reference is also made to the accompanying drawings and the descriptions associated with them. Figure 1 and Figure 2 The same reference numerals in the figures indicate the same or similar parts that have the same or similar functions. Figure 2 The lighting device 1 shown is Figure 1 The difference between the lighting devices 1 shown is: Figure 2 The first section 21 of the lighting device 1 shown includes a plurality of solid-state lighting elements arranged on a second side 20b of an elongated carrier 20. The plurality of solid-state lighting elements arranged on the first side 20a can be understood as a first plurality of solid-state lighting elements, and the plurality of solid-state lighting elements arranged on the second side 20b can be understood as a second plurality of solid-state lighting elements. The first plurality of solid-state lighting elements and the second plurality of solid-state lighting elements are arranged along the first section 21 on opposite sides of the elongated carrier 20 (the first side 20a and the second side 20b, respectively). Figure 2 The first plurality of solid-state lighting elements and / or the second plurality of solid-state lighting elements shown can be understood as, for example, LEDs or one or more LED filaments. The plurality of solid-state lighting elements can be understood as being arranged along the first side 20a and the second side 20b of the first segment 21. The plurality of solid-state lighting elements or the plurality of light-emitting elements can be arranged in an array along the first side 20a and / or the second side 20b of the first segment 21. An equal number of solid-state lighting elements can be arranged on the first side 20a and the second side 20b. However, different numbers of solid-state lighting elements can be arranged on the first side 20a and the second side 20b. Figure 2 The lighting device 1 shown is Figure 1 Another difference between the lighting fixtures shown lies in how the two second sections 22 are arranged. Figure 2 The image shows two second segments 22 being bent or folded once. However, Figure 2 The second segment 22, arranged on the right-hand side as shown, is bent or folded at a substantially right angle, such that a portion of the second segment 22 (not shown; see example) Figure 4 and Figure 5 The direction is substantially perpendicular to the cross-section and substantially parallel to surface 15. Therefore, to understand, Figure 2 The second segment 22 arranged on the right-hand side as shown may include additional bends or folds. Figure 2 The second segment 22, arranged on the left-hand side as shown, is bent or folded at a substantially right angle, such that a portion of the second segment 22 points toward another second segment 22. Thus, a portion of the second segment 22 is arranged along surface 15 between the first segment 21 and surface 15. Figure 2 The second segment 22 shown on the left-hand side can be understood as the first or last segment in the continuous piece, extending longitudinally along the elongated carrier 20.

[0038] Figure 3This is a schematic cross-sectional view of a lighting device 1 according to one or more exemplary embodiments of the present invention. It should be noted that... Figure 3 Including, for example Figures 1 to 2 The features, elements, and / or functions shown and described in the associated description herein are illustrated. Therefore, for the purpose of further understanding, reference is also made to these figures and the descriptions associated with them. Figure 1 , Figure 2 and Figure 3 The same reference numerals in the figures indicate the same or similar parts that have the same or similar functions. Figure 3 The lighting device 1 shown is Figure 1 The difference between the lighting devices 1 shown is that the first section 21 is arranged in an arc shape, wherein the central angle β of the circular sector defined by the arc is greater than that shown. Figure 1 The central angle is shown. The central angle β has an angle of approximately 225 degrees (i.e., (5 / 4)π radians). Therefore, each bend and / or fold of the second segment 22 closest to the first segment 21 has an angle greater than 90 degrees, such that a portion of each second segment 22 closest to the first segment 21 points away from the surface 15. Thus, a portion of the first segment 21 is arranged above the portion of the second segment 22 arranged along the surface 15. In other words, a portion of the second segment 22 arranged along the surface 15 is arranged between a portion of the first segment 21 and the surface 15.

[0039] Figure 4 This is a schematic view of a lighting device 1 according to one or more exemplary embodiments of the present invention. It should be noted that... Figure 4 Including, for example Figures 1 to 3 The features, elements, and / or functions shown and described in the associated description herein are illustrated. Therefore, for the purpose of further understanding, reference is also made to these figures and the descriptions associated with them. Figures 1 to 3 and Figure 4 The same reference numerals in the figures indicate the same or similar parts that have the same or similar functions. Figure 4 The image shows a lighting device 1 as viewed from above, where the viewpoint can be understood as perpendicular to the surface of the housing of the lighting device 1 (not shown; see example). Figures 1 to 3 ). Figure 4The lighting device 1 shown includes a flexible elongated carrier 20 having a first side and a second side. The elongated carrier includes five first segments 21 and six second segments 22. The first segments 21 and the second segments 22 are arranged alternately as a continuous section along the longitudinal extension of the elongated carrier. This continuous section begins and ends with a second segment 22. The elongated carrier has been bent or folded at four of the second segments 22. In other words, four of the second segments 22 have been bent or folded. Each of the four bent or folded second segments 22 has been bent or folded twice. Each bend or fold is substantially at a 45-degree angle. Therefore, the angle between a portion of the second segment 22 on one side of the bend or fold and another portion of the second segment 22 on the other side of the bend or fold is twice the angle of the bend or fold, which is substantially 90 degrees in this example. The four second segments 22, which have been bent or folded, are such that the bending or folding defines each of the four second segments as first portions 22a, 22d, second portions 22b, 22e, and third portions 22c, 22f. The first portions 22a, 22d, second portions 22b, 22e, and third portions 22c, 22f are arranged as a continuous piece along the longitudinal extension of the respective second segment 22. The first and second sides of two consecutive portions of the second segment 22 may face opposite directions, and these two consecutive portions are defined by the bending or folding. Figure 4 In the corresponding second segment 22, the first portions 22a, 22d and the third portions 22c, 22f are arranged such that the first side of the elongated carrier 20 faces away from or upward from the surface. Furthermore, in Figure 4 In this configuration, the second portions 22b and 22e of the corresponding second segment 22 are arranged such that the second side faces away from or upward from the surface. In other words, bending or folding can change the orientation of the second segment 22, and its orientation with respect to the first and second sides. Figure 4 In this context, for each of the second segments 22 that have been bent or folded, the lengths of the third portions 22c and 22f are greater than the lengths of the first portions 22a and 22d. Furthermore, in... Figure 4 In the second section 22, which has been bent or folded, the length of the second part 22b, 22e is greater than the length of the third part 22b, 22e. Figure 4 Two of the second segments 22 in the second section 22 have not yet been folded, and thus only include one portion 22g, which can be understood as an end portion. The second segments 22 can be at least partially attached to the surface. For example, portions of second segments 22a, 22b, 22c, 22e, 22f, and 22g can be attached to the surface. Figure 4In the first section 22a, 22d and the second sections 22b, 22e, as well as the second sections 22b, 22f and the third sections 22c, 22f, overlap each other. Therefore, it is understood that only a portion of one section can be attached to the surface at the point of partial overlap. However, overlapping portions can also be attached to each other. Therefore, the entire portion of the second section 22 can be attached to the surface. The second section 22 can be attached to the surface by an attachment device. The term "attachment device" refers to, for example, glue, adhesive, and / or fastening paste. It is understood that the second section 22 may include attachment devices for attaching and / or securing the elongated carrier 20 to the surface. The first section 21 may not include an attachment device. Furthermore, the first section 21 may be attached to the surface without an attachment device. Figure 4 In this process, the second segment 22 has been bent or folded so that the first segments 22 are aligned with each other. Furthermore, in... Figure 4 In the first section 21, the second segment 22 has been bent or folded so that the first segments 22 are parallel to each other. Furthermore, the flexible elongated carrier 20 has been bent and / or folded at the second segment 22, giving it a shape consistent with a spiral. A spiral can be understood as a coiling motion. The middle portion of each first segment 21 is aligned with respect to a straight line L. In other words, the middle portion of each first segment 21 is arranged along a straight line L. The first segments 21 are arranged at an angle θ relative to the straight line L. The straight line L can be understood as the direction of alignment. Furthermore, the straight line L can be understood as the axis of the spiral. The first segments 21 can be understood as being aligned and obliquely arranged relative to the straight line L. Each first segment 21 is arranged at a second distance d2 from another first segment 21, wherein the other first segment 21 is arranged before or after the corresponding first segment 21 in the sequence. The second distance d2 is in the longitudinal extension direction of the corresponding first segment 21. Figure 4 In the sequence, the second distance d2 is equal. However, it should be understood that the second distance d2 can be different. Furthermore, each first segment 21 is arranged at a third distance d3 from another first segment 21, wherein the other first segment 21 is arranged before or after the corresponding first segment 21 in the sequence. The third distance d3 is in a direction parallel to the line L. Figure 4 In the sequence, the third distance d3 is equal. However, it should be understood that the third distance d3 can be different. Each first segment 21 has: a first boundary with a second segment 22 arranged in the sequence preceding the corresponding first segment 21, and a second boundary with another second segment 22 arranged in the sequence following the corresponding first segment 21. Figure 4In the middle section, the second segment 22 has been bent or folded such that the first boundary of every other first segment 21 along the continuous piece and the second boundary of the remaining first segment 21 are aligned with line L1, where L1 is parallel to line L. Furthermore, the second boundary of every other first segment 21 along the continuous piece and the first boundary of the remaining first segment 21 are aligned with line L2, where L2 is parallel to lines L and L1. It should be noted that... Figure 4 The first segment 21, the second segment 22, and the number of bends or folds shown are exemplary. Any number of first segments 21 and second segments 22 may be arranged alternately as continuous pieces along the longitudinal extension of the elongated carrier 20. Furthermore, at least some of the second segments may, for example, not be bent or folded, or may be bent or folded once, twice, three times, four times, five times, or more.

[0040] Figure 5 This is a schematic view of a lighting device 1 according to one or more exemplary embodiments of the present invention. It should be noted that... Figure 5 Including, for example Figures 1 to 4 The features, elements, and / or functions shown in the figures and described in the associated description herein are illustrated. Therefore, for enhanced understanding, reference is also made to these figures and the descriptions associated with them. Figures 1 to 4 and Figure 5 The same reference numerals in the figures indicate the same or similar parts that have the same or similar functions. For example... Figure 5 The lighting device 1 shown is as follows Figure 4 The difference between the lighting devices 1 shown is that: Figure 5 The lighting device 1 shown includes a flexible elongated carrier 20, which comprises two first segments 21 and three second segments. Two of the second segments 22g, not shown, are bent or folded. The second segments 22, arranged longitudinally along the elongated carrier at the middle of a continuous section, are bent or folded such that the bending or folding defines the second segment 22 as a first portion 22a, a second portion 22b, and a third portion 22c arranged longitudinally along the second segment 22 of the continuous section. Figure 5 In the second section 22, the two bends or folds have different angles. However, the second section 22 is bent or folded such that the first section 21 is aligned and parallel to each other with respect to the straight line L.

[0041] Figure 6 This is a schematic view of a lighting device 1 according to one or more exemplary embodiments of the present invention. It should be noted that... Figure 6 Including, for example Figures 1 to 5 The features, elements, and / or functions shown in the figures and described in the associated description herein are illustrated. Therefore, for enhanced understanding, reference is also made to these figures and the descriptions associated with them. Figures 1 to 5 and Figure 6The same reference numerals in the figures indicate the same or similar parts that have the same or similar functions. For example... Figure 6 The lighting device 1 shown is as follows Figure 4 The differences between the lighting devices shown are as follows: Figure 6 The flexible, elongated carrier 20 of the lighting device 1 shown includes five first segments 21 and five second segments 22. Therefore, in Figure 6 In this embodiment, the continuous member extending longitudinally along the elongated carrier 20 begins with a second segment 22 and ends with a first segment 21. However, it should be understood that, according to embodiments of the invention, the continuous member extending longitudinally along the elongated carrier 20 may begin and / or end with the first segment 21, or with the second segment 22. Figure 6 In this process, the second segment 22 is bent or folded such that it is positioned between the second boundary of the first segment 21 and the first boundary of another first segment 21, which is positioned after the first segment 21 in the continuous piece. Therefore, in Figure 6 In this context, each second segment 22 intersects line L. Figure 6 In this configuration, the second segment 22 is arranged perpendicular to the straight line L. However, this is merely exemplary, and the second segment 22 can be arranged at virtually any angle relative to the straight line L (such as, for example, between 5 and 15 degrees or between 15 and 45 degrees). Furthermore, in... Figure 6 In this configuration, the second segment 22 is bent or folded twice, such that the first boundary of each first segment 21 is arranged along a straight line L1. Furthermore, in... Figure 6 In this configuration, the second segment 22 is bent or folded such that the second boundary of each first segment 21 is arranged along another straight line L2. Figure 6 In each second segment 22, the two folds have equal angles, but in opposite directions. Figure 6 At least some of the second segments 22 in the second section 22 have been bent and / or folded at least twice, wherein Figure 6 The four second segments 22 in the second section 22 have been folded twice. Therefore, it is not... Figure 6 All second segments 22 have been folded at least twice. For example... Figure 6 The first segment 21 shown is in accordance with... Figure 4 The arrangement is essentially the same as shown.

[0042] Figure 7 This is a schematic view of the flexible, slender carrier 20 of the lighting equipment. Figure 7 In the case of the flexible elongated carrier 20, there are five first segments 21 and six second segments 22, which are arranged alternately as a continuous element along the longitudinal extension LE of the elongated carrier 20. Figure 7A flexible, elongated carrier 20 in an unbent or folded state is shown. The flexible, elongated carrier 20 may be bent and / or folded at at least some of the second segments 22, such that the flexible, elongated carrier 20 has a shape consistent with a helical shape. Furthermore, the flexible, elongated carrier 20 may be bent and / or folded at at least some of the second segments 22, such that the first segments 21 are aligned with each other when viewed from above the surface of the lighting device housing. Additionally, each second segment 22 may be at least partially attached to the surface of the housing.

[0043] Although the invention has been illustrated in the accompanying drawings and the foregoing description, such description is to be considered illustrative or exemplary rather than restrictive; the invention is not limited to the disclosed embodiments. Other variations of the disclosed embodiments can be understood and implemented by those skilled in the art in practicing the claimed invention by studying the drawings, the disclosure, and the appended claims. In the appended claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that combinations of these measures cannot be advantageously used. Any reference numerals in the claims should not be construed as limiting the scope.

Claims

1. A lighting device (1), comprising: Shell (10); as well as A flexible, elongated carrier (20) having a first side (20a) and a second side (20b), the elongated carrier (20) comprising: A plurality of first sections (21), each first section comprising a plurality of solid-state lighting elements (25) arranged on the first side of the elongated carrier, wherein each first section is arranged at a distance d1 from the surface (15) of the housing; and A plurality of second segments (22), each second segment being at least partially attached to the surface of the housing; and wherein The first segment and the second segment are arranged alternately as a continuous element along the longitudinal extension (LE) of the elongated carrier; and wherein The elongated carrier has been bent and / or folded at at least some of the second sections, such that, viewed from above the surface of the housing, the elongated carrier has a shape consistent with the shape of a helix, and At least some of the second segments have been bent and / or folded at least twice.

2. The lighting device according to claim 1, wherein the elongated carrier is bent and / or folded such that each first segment has the same shape when viewed from above the surface of the housing.

3. The lighting device according to claim 1 or 2, wherein at least some of the first sections are arranged at an angle to the axis of the helix, wherein the angle is between 5 degrees and 60 degrees.

4. The lighting device according to claim 1 or 2, wherein at least some of the first segments are arranged at a distance d3 from another first segment, wherein the other first segment is arranged in the continuous member before or after the corresponding first segment, and wherein the distance d3 is in a direction parallel to the axis of the helix.

5. The lighting device according to claim 1 or 2, wherein at least some of the second sections have been bent and / or folded at an angle between 30 degrees and 60 degrees.

6. The lighting device according to claim 1 or 2, wherein at least some of the second segments have been bent and / or folded such that the bending or folding defines at least some of the second segments as a first portion (22a, 22d), a second portion (22b, 22e), and a third portion (22c, 22f), the first portion (22a, 22d), the second portion (22b, 22e), and the third portion (22c, 22f) being arranged as a continuous member extending longitudinally along the respective second segment, wherein the length of the third portion is greater than the length of the first portion.

7. The lighting device according to claim 1 or 2, wherein each first segment has: a first boundary (23) of a second segment arranged in the continuous member preceding the corresponding first segment, and a second boundary (23) of another second segment arranged in the continuous member following the corresponding first segment, and wherein at least some of the second segments have been folded such that the distance between the first boundary (23) and the second boundary (23) of each first segment is less than the length of the first segment.

8. The lighting device according to claim 1 or 2, wherein each first segment is arranged in an arc shape.

9. The lighting device according to claim 8, wherein each arc lies in a plane perpendicular to the surface (15) of the housing.

10. The lighting device of claim 8, wherein the central angle of the circular sector defined by the arc is at least 180 degrees.

11. The lighting device of claim 10, wherein the central angle of the circular sector defined by the arc is between 200 degrees and 340 degrees.

12. The lighting device according to claim 1 or 2, wherein the elongated carrier comprises a light-transmitting material.

13. The lighting device according to claim 1 or 2, wherein the plurality of solid-state lighting elements are encapsulated in a package comprising a luminescent material and / or a light-scattering material.

14. A method for manufacturing a lighting device (1), comprising: Provide housing (10); as well as A flexible elongated carrier (20) having a first side (20a) and a second side (20b) is provided, and the elongated carrier comprises: Multiple first segments (21), each first segment including at least one solid-state lighting element disposed on the first side of the elongated carrier, and Multiple second segments (22), wherein the first and second segments are arranged alternately as a continuous element along the longitudinal extension of the elongated carrier; The method further includes: The elongated carrier is bent and / or folded at at least some of the second segments in the second section, and the at least some of the second segments in the second section are bent and / or folded at least twice. Each second segment is at least partially attached to the surface (15) of the housing, such that each first segment is arranged at a distance d1 from the surface of the housing, and such that the elongated carrier has a shape consistent with a helical shape when viewed from above the surface of the housing.

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