LED road lamp with a conventional PLX socket

Abstract

The invention provides a light generating system (1000) comprising a light generating device (100), wherein the light generating device (100) comprises a light emitting section (200) and a plug arrangement (4000); wherein: (A) the light generating device (100) comprises a first axis (A1) configured intersecting the light emitting section (200) and the plug arrangement (4000); (B) the light emitting section (200) and the plug arrangement (4000) are mechanically coupled; (C) the light emitting section (200) comprises a LED filament (210) and a light transmissive envelope (220) configured at least partially surrounding the LED filament (210); and (D) the plug arrangement (4000) comprises a shiftable plug section (4300); wherein the shiftable plug section (4300) comprises an array (4050) of electrically conductive protruding elements (4010); wherein the array (4050) of electrically conductive protruding elements (4010) is configured electrically coupled to the LED filament (210); and wherein the shiftable plug section (4300) is configured shiftable with regard to the light emitting section (200) in a first direction perpendicular to the first axis (A1).

Description

[0001] LED ROAD LAMP WITH A CONVENTIONAL PLX SOCKET

[0002] FIELD OF THE INVENTION

[0003] The invention relates to a light generating system. The invention further relates to a plug arrangement. Further yet, the invention relates to a streetlight.

[0004] BACKGROUND OF THE INVENTION

[0005] Light bulbs are known in the art. For instance, US10644469B1 describes an LED plug-in lamp that has a plug head which converts from a G24Q 4-pin plug head to a G24D type 2-pin plug head when a collar structure on the plug head is rotated relative to a fixed stage structure. The collar structure has two pin-stop features and two pin hole cover features. Rotating the collar structure relative to the fixed stage structure moves the two pinstop features and allows the two reachable contact pins can be retracted through corresponding pin holes on the fixed stage structure and places ends of the pin hole cover structures over corresponding pin holes.

[0006] CN 106 663 907 B discloses a base for a lamp tube, comprising a securing part for stationarily securing to a front side of the lamp tube, and a connection part having at least one electrical contact element for electrically contacting a lamp holder, which connection part can be twisted against the securing part, wherein the securing part and the connection part are electrically connected to one another by means of at least one sliding contact. A tubular lamp having a lamp tube comprises a base on at least one open end of the lamp tube. A method serves to assemble a base on a lamp, tube of the tubular lamp. In particular, the invention is suitable for use on retrofit LED lamps as a substitute for fluorescent lamps, in particular T-type lamps, in particular T8-type lamps.

[0007] SUMMARY OF THE INVENTION

[0008] Luminaires for streetlights have been continuously developed for a number of decades. Recently, the use of LED technology for streetlights has gained interest, due to the increased energy-efficiency of LED lighting compared to conventional light bulbs. However, conventional streetlights may comprise special socket types, which may be incompatible with LED technology. Further, streetlight luminaires may have height limitations, posing restrictions on the type of LED-based light bulbs that can be applied in such luminaires. Especially, due to the wide range of existing luminaires, it may be challenging to find a LEDbased light bulb that is compatible with most luminaires, and which provides light over a suitable angle. Hence, it is an aspect of the invention to provide an alternative light generating system, which preferably further at least partly obviates one or more of abovedescribed drawbacks. The present invention may have as object to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.

[0009] According to a first aspect, the invention provides a light generating system comprising a light generating device. The light generating device comprises a light emitting section and a plug arrangement. Further, in embodiments, the light generating device may comprise a first (center) axis Ai configured intersecting the light emitting section and the plug arrangement. In embodiments, the light emitting section and the plug arrangement may be mechanically coupled. Further, in embodiments, the light emitting section may comprise a LED filament and a light transmissive envelope configured at least partially surrounding the LED filament. Additionally, the plug arrangement comprises a shiftable plug section. The shiftable plug section especially comprises an array of electrically conductive protruding elements. In embodiments, the array of electrically conductive protruding elements may be configured electrically coupled to the LED filament. Further, in embodiments, the shiftable plug section may be configured shiftable (in a plurality of positions) with regard to the light emitting section in a first direction perpendicular to the first axis AL Hence, in specific embodiments, the invention provides a light generating system comprising a light generating device, wherein the light generating device comprises a light emitting section and a plug arrangement; wherein: (A) the light generating device comprises a first axis Ai configured intersecting the light emitting section and the plug arrangement; (B) the light emitting section and the plug arrangement are mechanically coupled; (C) the light emitting section comprises a LED filament and a light transmissive envelope configured at least partially surrounding the LED filament; (D) the plug arrangement comprises a shiftable plug section; wherein the shiftable plug section comprises an array of electrically conductive protruding elements; wherein the array of electrically conductive protruding elements is configured electrically coupled to the LED filament; and wherein the shiftable plug section is configured shiftable with regard to the light emitting section in a first direction perpendicular to the first axis Ai. Such a light generating system may provide a LED-based light generating device which may be mechanically coupled to a conventional (streetlight) socket in a similar fashion as a conventional light generating device (such as a fluorescent lamp). Further, such a light generating system may provide a light generating device having an adaptable configuration, thereby providing the benefit that the same light generating device may be suitable for a wide range of luminaire types. Especially, with the shiftable plug section, the relative orientations of the light emitting section and the plug arrangement may be altered to fit a housing of a luminaire. Further, such a LED-filament-based light generating device may be more energy efficient than conventional light generating devices (such as fluorescent lamps).

[0010] The light generating device (of the light generating system) is configured to generate device light (see below). In embodiments, the light generating device comprises a light emitting section and a plug arrangement. Further, in embodiments, the light generating device may comprise a first (center) axis AL The first (center) axis Ai may especially be configured intersecting the light emitting section and the plug arrangement. In embodiments, the first (center) axis Ai may further be configured at a (geometrical) center of the light emitting section (and extending towards the plug arrangement).

[0011] In embodiments, the plug arrangement may have a (maximum) plug arrangement length Lpand a (maximum) plug arrangement height Hp(in a cross-section perpendicular to the first axis Ai), wherein the plug arrangement height Hpmay be configured perpendicular to the plug arrangement length Lp. In embodiments, the plug arrangement length Lpand plug arrangement height Hpmay be individually selected from the range of < 8 cm, such as from the range of < 7 cm, especially from the range of < 6 cm, like from the range of < 5 cm. Additionally or alternatively, in embodiments, the plug arrangement length Lpand plug arrangement height Hpmay be individually selected from the range of > 2 cm, such as from the range of > 3 cm, especially from the range of > 3.5 cm, like from the range of > 4 cm. Further, in embodiments, the plug arrangement may have a plug arrangement width Wpin a direction parallel to the first axis Ai. In embodiments, the plug arrangement width Wpmay be selected from the range of < 10 cm, such as from the range of < 9 cm, especially from the range of < 8 cm, like from the range of < 7 cm. Additionally or alternatively, in embodiments, the plug arrangement width Wpmay be selected from the range of > 1.5 cm, such as from the range of > 2 cm, especially from the range of > 3 cm, like from the range of > 4 cm.

[0012] In embodiments, the plug arrangement may have a plug arrangement shape in a cross-section perpendicular to the first axis Ai. In embodiments, the plug arrangement shape may be selected from the group comprising a circular shape, an elliptical shape, and an n-gonal shape, wherein n > 3, such as n > 4 (square or rectangular shape), especially n > 5 (pentagonal shape), like n > 6 (hexagonal shape), and wherein n < 24 (though larger numbers are herein not excluded). In embodiments, the plug arrangement shape may be an n-gonal shape, wherein the n-gonal shape may have sharp edges and / or rounded edges. In embodiments, the plug arrangement shape may be constant over the plug arrangement width Wp. Alternatively, the plug arrangement shape may vary (or change) over the plug arrangement width Wp. For instance, in embodiments, the plug arrangement may comprise at least two elements, wherein a first element may have a different (constant) shape (in a crosssection perpendicular to the first axis Ai) than a second element.

[0013] In embodiments, the plug arrangement especially comprises a shiftable plug section. The shiftable plug section may be configured shiftable (in a plurality of positions) with regard to the light emitting section, especially in a first direction perpendicular to the first axis AL Herein, the term “shiftable”, and related terms, especially refer to a (movement of) translation of a first element with respect to a second element. Hence, the phrase “the shiftable plug section may be shifted with regard to the light emitting section” may indicate: (i) a translation of the shiftable plug section with respect to the (stationary) light emitting section, and / or (ii) a translation of (at least) the light emitting section with respect to the (stationary) shiftable plug section. In embodiments, the shiftable plug section and / or light emitting section may (essentially) not be rotated during the translation. Alternatively, the shiftable plug section may be configured shiftable and rotatable with regard to the light emitting section.

[0014] In embodiments, the shiftable plug section may have a second height H2 perpendicular to the first axis Ai (and parallel to the plug arrangement height Hp). The second height H2 may in embodiments be equal to the plug arrangement height Hp, i.e., the shiftable plug section may in embodiments define the plug arrangement height Hp. Alternatively, in embodiments, the second height H2 may be smaller than the plug arrangement height Hp(such that another element of the plug arrangement may define the plug arrangement height Hp). Hence, in embodiments, H2 < Hp, such as H2 < 0.9*Hp, especially H2 < 0.8*Hp, like H2 < 0.7*Hp. Additionally or alternatively, in embodiments, H2 > 0.1 *HP, such as H2 > 0.2*Hp, especially H2 > 0.3 *HP, like H2 > 0.4*Hp. Further, in embodiments, the shiftable plug section may have a second length L2 perpendicular to the first axis Ai (and parallel to the plug arrangement length Lp). In embodiments, L2 < Lp, such as L2 < 0.9*Lp, especially L2 < 0.8*Lp, like L2 < 0.7*Lp. Additionally or alternatively, in embodiments, L2 > 0.25*Lp, such as L2 > 0.4*Lp, especially L2 > 0.5*Lp, like L2 > 0.6*Lp.

[0015] In embodiments, the shiftable plug section may be configured shiftable over a shift distance (d) along the first direction perpendicular to the first axis Ai. Hence, the shiftable plug section may be configured shiftable with regard to the light emitting section along the first direction, wherein (a geometrical center of) the shiftable plug section may have a (maximum) distance (or amplitude) of (d) with regard to the first axis Ai. That is, in an extreme position of the shiftable plug section, a first distance di between the geometrical center of the shiftable plug section and the first axis Ai may be equal to the shift distance (d), wherein the shiftable plug section may be configured at any first distance di selected from the range of < d (i.e., selected from the range of 0-d). Hence, the shiftable plug section may be configured shiftable over the shift distance (d) along the first direction. In embodiments, the shiftable plug section may have the (maximum) shift distance (d) in both directions from the first axis Ai along the first direction, e.g., in both an upwards and downwards direction from the first axis Ai. Alternatively, the shiftable plug section may have the (maximum) shift distance (d) in only one direction from the first axis Ai along the first direction (and may (essentially) not be shiftable in another opposite direction). Alternatively, in embodiments, the shiftable plug section may have the (maximum) shift distance (d) in the one direction from the first axis Ai along the first direction, wherein a maximum (shift) distance from the first axis Ai in another (opposite) direction may be smaller than the shift distance (d). Hence, in embodiments, the (maximum) shift distances in the one and (opposite) other direction from the first axis Ai along the first direction may deviate by < 100%, such as < 75%, especially < 50%, like < 25%, relative to the (maximum) shift distance (d). Additionally or alternatively, in embodiments, the (maximum) shift distances in the one and (opposite) other direction from the first axis Ai along the first direction may deviate by > 0%, such as > 10%, especially > 25%, like > 50%, relative to the (maximum) shift distance (d).

[0016] In embodiments, the shift distance (d) may be selected from the range of > 0.5 mm, such as from the range of > 1 mm, especially from the range of > 2 mm, like from the range of > 5 mm. Additionally or alternatively, in embodiments, the shift distance (d) may be selected from the range of < 100 mm, such as from the range of < 75 mm, especially from the range of < 50 mm, like from the range of < 40 mm. Especially, in embodiments, the shift distance (d) may be selected from the range of 0.5-100 mm, such as from the range of 1-75 mm, especially from the range of 2-50 mm, like from the range of 5-40 mm. Hence, in specific embodiments, the shiftable plug section may be configured shiftable over a shift distance (d) along the first direction perpendicular to the first axis Ai selected from the range of 2-50 mm. Such a shift distance (d) may facilitate that the shiftable plug section may be configured to shift with regard to the light emitting section over (essentially) the full plug arrangement length Lpand / or plug arrangement height Hp. Further, such a shift distance (d) may facilitate adjusting the relative configurations of the shiftable plug section and the light emitting section over a (total) distance of 2*d.

[0017] In embodiments, the shiftable plug section may comprise one or more interlocking features. In embodiments, the one or more interlocking features may be configured to facilitate a shifting (or sliding) movement of the shiftable plug section (in the first direction). Further, the one or more interlocking features may be configured to prevent a detachment of the shiftable plug section from (the remainder of) the light generating device during operation of the light generating device. In embodiments, the one or more interlocking features may be selected from the group comprising hooks and gears. Further, in embodiments, the one or more interlocking features may be configured to (slidably) interlock with a shiftable plug guide comprised by (the remainder of) the light generating device, wherein the shiftable plug guide may be configured to guide the (movement of) translation of the shiftable plug section (in the first direction). In embodiments, the shiftable plug guide may comprise one or more of a gear rack and a rail, having a profile in a cross-section parallel to the first axis Ai (and perpendicular to the first direction) selected from the group comprising a T-profile, an I-profile, an H-profile, a C-profile, and a U-profile. For instance, the one or more interlocking features may comprise hooks, and the shiftable plug guide may comprise a rail having a T-profile, wherein the one or more hooks may be configured to hook around the head of the T-profile. Alternatively, for instance, the one or more interlocking features may comprise gears, and the shiftable plug guide may comprise a gear rack having a T -profile, wherein the one or more gears may be configured to hook around the head of the T -profile and move (with a rotating motion) along the gear rack. Hence, in embodiments, the shiftable plug guide may be configured to prevent a (shifting) movement of the shiftable plug section in a direction parallel to the first axis AL

[0018] In embodiments, as indicated above, the geometrical center of the shiftable plug section may be configured at any first distance di selected from the range of 0-d with regard to the first axis AL In embodiments, the light generating device, especially the plug arrangement, may be configured to maintain the relative position of the shiftable plug section at the first distance di. That is, the plug arrangement may be configured to fixate (or “lock”) the position of the shiftable plug section (especially during operation of the light generating device). Hence, in embodiments, the plug arrangement may comprise a (first) locking mechanism, configured to mechanically lock the (selected) position of the shiftable plug section. In embodiments, the (first) locking mechanism may comprise one or more of (blunt) serrations (or “protrusions”), pins, clamps, and electromagnets. For instance, the (first) locking mechanism may comprise (blunt) serrations, wherein the (blunt) serrations may be configured retracted (into the shiftable plug guide) in a first configuration (e.g. during shifting of the shiftable plug section) and configured extended (especially around the one or more interlocking features) in a second configuration. Alternatively, in embodiments, the (first) locking mechanism may comprise pins, wherein the shiftable plug guide may comprise through holes configured to accept the pins, wherein the (first) locking mechanism may be configured to provide the pins through the through holes such that the pins extend from (one or both sides of) the shiftable plug guide. Hence, in specific embodiments, the plug arrangement may comprise a locking mechanism, wherein the locking mechanism may be configured to mechanically lock the position of the shiftable plug section. Such a locking mechanism may facilitate fixating the position of the shiftable plug section at one or more (especially a plurality of) positions with regard to the light emitting section. Further, (especially,) such a locking mechanism may facilitate preventing a shifting movement of the shiftable plug section during operation of the light generating device.

[0019] In embodiments, the shiftable plug section may further be configured shiftable (with regard to the light emitting section) in a second direction perpendicular to the first axis Ai. The second direction may be (configured) perpendicular to the first direction. Alternatively, the second direction may be (configured) at an angle with the first direction (and perpendicular to the first axis Ai), wherein the angle may be selected from the range of > 5°, such as from the range of > 15°, especially from the range of > 25°, like from the range of > 40°. Additionally or alternatively, in embodiments, the second direction may be (configured) at an angle with the first direction (and perpendicular to the first axis Ai), wherein the angle may be selected from the range of < 90°, such as from the range of < 75°, especially from the range of < 60°, like from the range of < 50°. Yet, especially, the second direction may be perpendicular to the first direction. Hence, in specific embodiments, the shiftable plug section may further be configured shiftable in a second direction perpendicular to the first axis Ai, wherein the second direction may be perpendicular to the first direction. A shiftable plug section further configured shiftable in a second direction may provide a light generating device allowing more possible relative configurations for the shiftable plug section and the light emitting section. Hence, such a light generating device may be more versatile. This may provide the benefit that a single light generating device may be used for a plurality of systems (e.g. streetlights), thereby reducing the need to produce a wide range of light generating devices. In embodiments, the shiftable plug section may be configured shiftable over a second shift distance (dS2) along the second direction perpendicular to the first axis AL Hence, the shiftable plug section may be configured shiftable with regard to the light emitting section along the second direction, wherein (a geometrical center of) the shiftable plug section may have a (maximum) distance (or amplitude) of (dS2) with regard to the first axis Ai. Further, in embodiments, the (geometrical center of) the shiftable plug section may be configured at any second distance d2 selected from the range of < dS2 (i.e., selected from the range of 0-dS2) with regard to the first axis Ai. In embodiments, the shiftable plug section may have the (maximum) second shift distance (dS2) in one or both directions from the first axis Ai along the second direction. In embodiments, the (maximum) shift distances in the one and another (opposite) direction from the first axis Ai along the second direction may deviate by < 100%, such as < 75%, especially < 50%, like < 25%, relative to the (maximum) second shift distance (dS2). Additionally or alternatively, in embodiments, the (maximum) shift distances in the one and (opposite) other direction from the first axis Ai along the second direction may deviate by > 0%, such as > 10%, especially > 25%, like > 50%, relative to the (maximum) second shift distance (dS2). In embodiments, the second shift distance (dS2) may be equal to the (first) shift distance (d). Alternatively, in embodiments, the second shift distance (dS2) may be individually selected from the range of 0.5-100 mm, such as from the range of 1-75 mm, especially from the range of 2-50 mm, like from the range of 5-40 mm.

[0020] In embodiments, the one or more interlocking features of the shiftable plug section may be configured to facilitate a shifting movement of the shiftable plug section in the second direction. Alternatively, the shiftable plug section may comprise one or more second interlocking features, wherein the one or more second interlocking features may be configured to facilitate a shifting movement of the shiftable plug section in the second direction. In embodiments, the one or more second interlocking features may be selected from the group comprising hooks and gears. In embodiments, the one or more (second) interlocking features may be configured to interlock with a second shiftable plug guide comprised by (the remainder of) the light generating device, wherein the second shiftable plug guide may be configured to guide the shifting (or sliding) of the shiftable plug section (in the second direction). In embodiments, the second shiftable plug guide may be identical to the (first) shiftable plug guide. Alternatively, the second shiftable plug guide may be individually selected from the group comprising a gear rack and a rail, wherein the gear rack and / or rail may have a profile in a cross-section parallel to the first axis Ai (and perpendicular to the second direction) selected from the group comprising a T-profile, an I- profile, an H-profile, a C-profile, and a U-profile. In embodiments, the second shiftable plug guide may be configured to prevent a (shifting) movement of the shiftable plug section in a direction parallel to the first axis Ai. Further, in embodiments, the (first) locking mechanism may further be configured to mechanically lock the (selected) position of the shiftable plug section along the second direction. Additionally or alternatively, in embodiments, the plug arrangement may comprise a second locking mechanism, wherein the second locking mechanism may be configured to mechanically lock the (selected) position of the shiftable plug section along the second direction. In embodiments, the second locking mechanism may comprise one or more of (blunt) serrations, pins, and clamps.

[0021] In embodiments, the light generating device may further comprise an end locking mechanism, wherein the end locking mechanism may be configured at one or both, especially both, ends of the shiftable plug guide and / or of the second shiftable plug guide. The end locking mechanism may especially be configured to prevent a detachment of the shiftable plug section from the (remainder of the) light generating device along the first direction and / or the second direction. In embodiments, the end locking mechanism may comprise one or more protrusions, wherein the one or more protrusions may be configured extendable from the shiftable plug guide and / or from the second shiftable plug guide. Additionally or alternatively, the end locking mechanism may comprise one or more (detachable) caps, configured to be placed around the end of the shiftable plug guide and / or of the second shiftable plug guide.

[0022] In embodiments, the shiftable plug section may comprise an array of electrically conductive protruding elements. The array of electrically conductive protruding elements may be configured electrically coupled to the LED filament. Further, the array of electrically conductive protruding elements may be configured at an opposite side of the shiftable plug section from the one or more (second) interlocking features. That is, the shiftable plug section may have a first major surface and an opposite second major surface, wherein the array of electrically conductive protruding elements is configured extending from the first major surface, and wherein the one or more (second) interlocking features are configured extending from the second major surface. In embodiments, the electrically conductive protruding elements may comprise electrically conductive (contact) pins. Further, in embodiments, the electrically conductive protruding elements may have a shape in a crosssection perpendicular to the first axis Ai, wherein the shape may be selected from a circular shape, an elliptical shape, and an n-gonal shape (wherein n < 24), such as especially selected from a circular shape and an elliptical shape. Additionally or alternatively, the electrically conductive protruding elements may have an electrically conductive protruding element width Wee parallel to the first axis AL In embodiments, Wecmay be selected from the range of 2-20 mm, such as from the range of 3-15 mm, especially from the range of 4-10 mm. In embodiments, the array of electrically conductive protruding elements may be configured to be electrically (and mechanically) coupled to a complementary array of pin holes comprised by an (electrical) socket.

[0023] In embodiments, the array of electrically conductive protruding elements may comprise a linear array of nl electrically conductive protruding elements. Herein, the term “linear array” refers to an array comprising a single row. Hence, in embodiments, the array of electrically conductive protruding elements may comprise a linear array of 1 x nl electrically conductive protruding elements. In embodiments, nl may be selected from the range of > 2, such as from the range of > 3, especially from the range of > 4. Additionally or alternatively, nl may be selected from the range of < 6, such as from the range of < 5, especially from the range of < 4. In specific embodiments, nl = 4. In embodiments, all of the nl electrically conductive protruding elements may be configured electrically coupled to the LED filament. Alternatively, (only) a first subset of the nl electrically conductive protruding elements may be configured electrically coupled to the LED filament. Especially, in embodiments, > 1, such as > 2, especially > 3, of the electrically conductive protruding elements (of the linear array) may be configured electrically coupled to the LED filament. Additionally or alternatively, in embodiments, < 6, such as < 5, especially < 4, of the electrically conductive protruding elements (of the linear array) may be configured electrically coupled to the LED filament. In embodiments, the electrically conductive protruding elements of the first subset may be configured adjacent in the linear array of nl electrically conductive protruding elements. Alternatively, the electrically conductive protruding elements of the first subset may be configured distributed over the linear array, wherein at least one of the electrically conductive protruding elements of the first subset may not be configured adjacent to any other of the electrically conductive protruding elements of the first subset. Especially, in embodiments, nl = 4, wherein two of the electrically conductive protruding elements may be configured electrically coupled to the LED filament, and wherein said two electrically conductive protruding elements may be configured on opposite ends of the linear array (i.e., as the outer electrically conductive protruding elements in the linear array). Hence, in specific embodiments, the array of electrically conductive protruding elements may comprise a linear array of nl electrically conductive protruding elements; wherein nl=4; and wherein at least two of the electrically conductive protruding elements may be configured electrically coupled to the LED filament. A linear array of 4 electrically conductive protruding elements may provide the benefit that the light generating device, especially the plug arrangement, may be complementary to (at least some types of) conventional sockets for fluorescent lamps. Hence, a light generating device comprising such a linear array may facilitate replacing a fluorescent lamp with a LED-based light generating device in e.g. a streetlight, without having to replace the socket of said streetlight.

[0024] In embodiments, the plug arrangement may comprise an interlocking protruding element. The interlocking protruding element may be configured extending from the first major surface of the shiftable plug section. Further, in embodiments, the interlocking protruding element may have a shape in a cross-section perpendicular to the first axis AL The shape of the interlocking protruding element may be selected from the group comprising a circular shape, an elliptical shape, and an n-gonal shape, wherein n > 3, such as n > 4, and wherein n < 8. Especially, the interlocking protruding element may have a square or rectangular shape (i.e., n=4). In embodiments, the interlocking protruding element may have a protruding element length LPE parallel to the plug arrangement length Lpand a protruding element height HPE parallel to the plug arrangement height Hp. In embodiments, the protruding element length LPE and protruding element height HPE may be individually selected from the range of 0.5-4 cm, such as from the range of 0.75-3.5 cm, especially from the range of 1-3 cm. Further, the interlocking protruding element may have a protruding element width WPE parallel to the first axis Ai (and the plug arrangement width Wp). In embodiments, the protruding element width WPE may be selected from the range of 0.5-5 cm, such as from the range of 1-4 cm, especially from the range of 1.25-3 cm, like from the range of 1.5-2.5 cm. In embodiments, the interlocking protruding element may comprise one or more interlocking retention features configured on one or more sides of the interlocking protruding element. The one or more interlocking retention features may especially be configured projecting from (or extending from) the one or more sides of the interlocking protruding element in a direction perpendicular to the first axis AL Further, the one or more interlocking retention features may be configured to interlock with one or more interlocking receiving elements in an (electrical) socket.

[0025] In embodiments, the interlocking protruding element may be configured between at least two electrically conductive protruding elements (of the array of electrically conductive protruding elements). Hence, in embodiments, the array of electrically conductive protruding elements may comprise a first subset of electrically conductive protruding elements configured on a first side of the interlocking protruding element, and a second subset of electrically conductive protruding elements configured on a second (opposite) side of the interlocking protruding element. In embodiments, the number of electrically conductive protruding elements in the first subset and second subset may be individually selected from the range of > 1, such as from the range of > 2. Additionally or alternatively, the number of electrically conductive protruding elements in the first subset and second subset may be individually selected from the range of < 4, such as from the range of < 3. In specific embodiments, the first subset and second subset may (both) comprise an equal number of electrically conductive protruding elements, i.e., the electrically conductive protruding elements may be evenly distributed over the first subset and the second subset. As indicated above, the interlocking protruding element may be configured (extending from the first major surface of the shiftable plug section and) between the first subset and second subset of the electrically conductive protruding elements. Hence, in specific embodiments, the plug arrangement may comprise an interlocking protruding element configured between at least two electrically conductive protruding elements. Such an interlocking protruding element may provide the benefit that, upon electrically coupling the plug arrangement to a socket, the interlocking protruding element may facilitate a (stronger) mechanical coupling to the socket. Hence, such an interlocking protruding element may provide the benefit that the light generating device may be held in place (in the socket) more firmly, thereby preventing loosening of the plug arrangement from the socket due to e.g. vibrations.

[0026] In embodiments, the interlocking protruding element may be configured in the single row of the linear array of (lx)nl electrically conductive protruding elements, wherein at least two of the nl electrically conductive protruding elements may be configured adjacent to the interlocking protruding element. Further, as indicated above, in embodiments, the plug arrangement (especially the shiftable plug section) may be configured to be electrically and / or mechanically coupled to a socket. That is, the plug arrangement may be configured to form a plug-socket configuration with a socket. In embodiments, the plug arrangement may comprise a linear array of nl electrically conductive protruding elements, wherein the plug arrangement (especially the shiftable plug section) may especially be configured to form a plug-socket configuration with a socket selected from the group of a 2G11 socket, a 2GX7 socket, a G23 socket, and a GX23 socket, such as especially a socket selected from the group of a 2G11 socket, a G23 socket, and a GX23 socket. That is, the plug arrangement, such as especially the shiftable plug section, may comprise a 2G11 base, a 2GX7 base, a G23 base, or a GX23 base. In such embodiments, the shiftable plug section may especially have an elongated (elliptical) shape, wherein L2 > H2 or H2 > L2. Hence, in specific embodiments, the plug arrangement of the light generating device may be configured to form a plug-socket configuration with a socket selected from the group of a 2G11 socket, a G23 socket, and a GX23 socket. Such a plug arrangement may facilitate using the light generating device to replace fluorescent lamps having a 2G11, a G23, or a GX23 base. In embodiments, light generating devices comprising a 2G11 base may be referred to as PLL-type light generating devices, wherein the 2G11 socket may be referred to as a PLL(-type) socket. Further, in embodiments, light generating devices comprising a G23 or GX23 base may be referred to as PLS-type light generating devices, wherein the G23 and GX23 sockets may be referred to as PLS(-type) sockets.

[0027] In (other) embodiments, the array of electrically conductive protruding elements may comprise a (regular) array of n x m electrically conductive protruding elements. In (such) embodiments, n and m may be individually selected from the range of 1- 6, such as from the range of 2-5, especially from the range of 2-4. In specific embodiments, the array of electrically conductive protruding elements may comprise a (regular) array of 2x2 electrically conductive protruding elements. In such embodiments, the interlocking protruding element may be configured between the two columns of the 2x2 array. Alternatively, the array of electrically conductive protruding elements may comprise a (regular) array of 1x2 electrically conductive protruding elements, wherein the interlocking protruding element may be configured between the two columns of the 1x2 array. In (such) embodiments, the shiftable plug section may be configured to form a plug-socket configuration with a socket selected from the group of a G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-2, GX24q-3, GX24q-4, GX23-2, GX32d-2, and GC32d-3 socket. That is, the plug arrangement, such as especially the shiftable plug section, may comprise a G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-2, GX24q-3, GX24q-4, GX23- 2, GX32d-2, or GC32d-3 base. Especially, in embodiments, the shiftable plug section may be configured to form a plug-socket configuration with a socket selected from the group of a G24d-1 socket, a G24d-2 socket, a G24d-3 socket, a G24q-1 socket, a G24q-2 socket, a G24q-3 socket, a GX24q-3 socket, and a GX24q-4 socket. Hence, in specific embodiments, the plug arrangement of the light generating device may be configured to form a plug-socket configuration with a socket selected from the group of a G24d-1 socket, a G24d-2 socket, a G24d-3 socket, a G24q-1 socket, a G24q-2 socket, a G24q-3 socket, a GX24q-3 socket, and a GX24q-4 socket. Such a plug arrangement may provide the benefit that the light generating device may be configured to replace fluorescent lamps having a G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-3, or GX24q-4 base. In embodiments, light generating devices comprising a G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, or G24q-3 base may be referred to as PLC-type light generating devices, wherein the G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, and G24q-3 sockets may be referred to as PLC(-type) sockets. Further, in embodiments, light generating devices comprising a GX24q-3, GX24q-4, or G24q-3 base may be referred to as PLT-type light generating devices, wherein the GX24q-3, GX24q-4, and G24q-3 sockets may be referred to as PLT(-type) sockets.

[0028] In embodiments, the light generating device may comprise a connector element. In embodiments, the LED filament may be configured electrically coupled to the connector element. Further, in embodiments, the plug arrangement may comprise a receiver element. The receiver element may especially be configured electrically coupled with the connector element. Additionally, the receiver element may be configured electrically coupled with the array of electrically conductive protruding elements (e.g. through one or more of wires and conductive tracks). In embodiments, the shiftable plug section may (further) be configured shiftable relative to the receiver element. Further, in embodiments, the receiver element may be configured detachable from the connector element. Especially, the connector element and receiver element may be configured mechanically coupled (especially mechanically interlocked) in a first configuration, and mechanically decoupled (or detached) in a second configuration. In embodiments, the decoupling (or detaching) of the connector element from the receiver element may be facilitated by one or more of a rotating movement, a pinching movement, a compressing movement, and a retracting movement.

[0029] In embodiments, the connector element may comprise one or more of (electrically conductive) protruding pins and electrical contact sections. Further, in embodiments, the connector element may comprise mechanical fixating means, such as one or more of thread and protrusions. The mechanical fixating means may be configured to mechanically couple (especially interlock) the connector element with the receiver element. Further, in embodiments, the connector element may comprise any lamp (or light bulb) base known in the art. Especially, in embodiments, the connector element may be selected from the group comprising twist and lock bases, fluorescent pin bases, bi-pin bases, wedge bases, bayonet bases, and screw bases, wherein the receiver element may comprise the corresponding (complementary) socket. In embodiments, the connector element may comprise a twist and lock base, such as selected from the group comprising a GU10, GZ10, GU24, GX53, and GX70 base, wherein the receiver element may comprise the complementary socket of the same type. For instance, the connector element may comprise a GU10 base, such that the receiver element may comprise a GU10 socket. Alternatively, the connector element may comprise a fluorescent pin base, such as selected from the group comprising a miniature bi-pin (mini bi-pin), medium bi-pin, single pin, recessed double contact, GlOq 4-pin, 2GX-13, and axial base, and wherein the receiver element may comprise the complementary socket of the same type. In (other) embodiments, the connector element may comprise a bi-pin base, such as selected from the group comprising a G4, GU4, GY4, GZ4, G5, G5.3, GU5.3, GX5.3, GY5.3, G6.35, GX6.35, GY6.35, GZ6.35, GU8, GY8, G8.5, GY8.6, G9, G9 pin blade, G9.5, GZ9.5, G12, G13, GX16d, G23, and G38 base, and wherein the receiver element may comprise the complementary socket of the same type. In (other) embodiments, the connector element may comprise a wedge base, such as selected from the group comprising a wedge, wedge D.F., wedge S.F., RX7s, slide, and wedge subminiature base, and wherein the receiver element may comprise the complementary socket of the same type. Alternatively, the connector element may comprise a bayonet base, such as selected from the group comprising a BA5s, BA7, BA7s, B8.4d, BX8.4d, BA9, BA9s, BAX9s, BAY9s, BAU9s, BAUZ9s, BAW9s, BAZ9s, Bl 5s, B15d, BAI 5, BAI 5s, BAU15, BAU15s, BAW15, BAX15d, BAY15d, BAX15s, BAZ15, BAZ15d, BA15s-3, BA15d-3, BA20, BA20s, BA20d, BA21d, BA21-3, B21-4, B22s, B22d, B22d-3, BA22d, BY22d, BX22d, and BC-3 base, and wherein the receiver element may comprise the complementary socket of the same type. Especially, in embodiment, the connector element may comprise a screw base. In such embodiments, the connector element may especially be a threaded connector element.

[0030] Hence, in embodiments, the light generating device may comprise a threaded connector element. The threaded connector element may be configured to facilitate the electrical connection between the LED filament and the electrically conductive protruding elements. Hence, the LED filament may be configured electrically coupled to the threaded connector element. Further, in embodiments, the plug arrangement may comprise a threaded receiver element. The threaded receiver element may especially be configured electrically coupled with the threaded connector element. Additionally, the threaded receiver element may be configured electrically coupled with the array of electrically conductive protruding elements. In embodiments, the threaded receiver element may be configured detachable from the threaded connector element. Especially, the threaded connector element and threaded receiver element may be configured to be screwed together, wherein the threaded receiver element may be configured detachable from the threaded connector element by unscrewing the threaded connector element from the threaded receiver element. In embodiments, the shiftable plug section may (further) be configured shiftable relative to the threaded receiver element. Hence, in specific embodiments, the light generating device may comprise a threaded connector element, wherein the LED filament may be configured electrically coupled to the threaded connector element; wherein the plug arrangement may comprise a threaded receiver element (which may be) configured electrically coupled with (a) the threaded connector element, and (b) the array of electrically conductive protruding elements; wherein the threaded receiver element may be configured detachable from the threaded connector element; and wherein the shiftable plug section may be configured shiftable relative to the threaded receiver element. Such a light generating device may provide the benefit that, upon degradation of and / or damage to the LED-filament, only part of the light generating device may need to be replaced, reducing replacement costs. Further, such a light generating device may provide the benefit that the plug arrangement may function as an adapter for electrically and / or mechanically coupling e.g. light bulbs having a threaded connector element to a PLL socket, PLS socket, PLC socket, and / or PLT socket.

[0031] In embodiments, the threaded connector element may comprise an Edison screw base. Especially, in embodiments, the threaded connector element may comprise an Edison screw (base) selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an E18, an E26, an E27, an E33, an E39, and an E40 base. Further, in embodiments, the threaded receiver element may comprise a (complementary) Edison screw socket. Hence, in specific embodiments, the threaded receiver element may comprise an Edison screw socket selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an E18, an E26, an E27, an E33, an E39, and an E40 socket. Edison screw sockets (and bases) may be relatively commonly used as a standard lamp base, especially in (continental) Europe and North America. Hence, a plug arrangement comprising a threaded receiver element comprising an Edison screw socket may especially facilitate that lamps having a “standard” base may be electrically and / or mechanically coupled to one or more of a PLL, PLS, PLC, and PLT socket.

[0032] In embodiments, the threaded connector element may comprise one or more fixating protrusions. Especially, in embodiments, the threaded connector element may comprise > 1, such as > 2, especially > 3, fixating protrusions. Additionally or alternatively, in embodiments, the threaded connector element may comprise < 6, such as < 5, especially < 4, fixating protrusions. The one or more fixating protrusions may be configured to mechanically couple the threaded connector element to the threaded receiver element. Further, in embodiments, the one or more fixating protrusions may be configured between the light emitting section and the thread of the threaded connector element. In embodiments, the threaded receiver element may comprise one or more fixating channels. In embodiments, the one or more fixating protrusions may be configured to mechanically couple the threaded connector element to the threaded receiver element via the one or more fixating channels. Especially, the one or more fixating protrusions may be configured to interlock with the one or more fixating channels (in a first configuration of the light generating device). Hence, in embodiments, the number of fixating channels in the threaded receiver element may be equal to the number of fixating protrusions in the threaded connector element. Hence, in specific embodiments, the threaded receiver element may comprise one or more fixating channels, and the threaded connector element may comprise one or more fixating protrusions configured to interlock with the one or more fixating channels. Such fixating protrusions (and fixating channels) may prevent the threaded connector element from (accidentally) unscrewing from the threaded receiver element due to e.g. vibrations. Especially, such fixating protrusions may provide the benefit that the threaded connector element and threaded receiver element may remain interlocked until a user applies one or more of a rotating, pinching, compressing, and retracting movement to uncouple the fixating protrusions from the fixating channels.

[0033] As indicated above, the shiftable plug section may be configured shiftable relative to the threaded receiver element. Hence, in embodiments, the threaded receiver element may comprise the shiftable plug guide (and the second shiftable plug guide). Further, in embodiments, the threaded receiver element may comprise the end locking mechanism. As indicated above, in embodiments, the end locking mechanism may be configured to prevent a detachment of the shiftable plug section from the threaded receiver element along the first and / or second direction, such as especially in a first configuration of the end locking mechanism. Yet, in embodiments, the end locking mechanism may further be configured to facilitate a detachment of the shiftable plug section from the threaded receiver element along the first and / or the second direction in a second configuration of the end locking mechanism. Hence, in the second configuration of the end locking mechanism, the shiftable plug section may be removed from the shiftable plug guide (especially with a shifting and / or sliding movement) along the first and / or second direction. Hence, in specific embodiments, the shiftable plug section may be configured detachable from the threaded receiver element. A detachable shiftable plug section may provide the benefit that - when needed - the shiftable plug section may be relatively easily exchanged for a shiftable plug section configured to form a plug-socket configuration with another (type of) socket. Hence, a light generating device comprising a detachable shiftable plug section may be more versatile. Further, a light generating device wherein the threaded connector element may be configured detachable from the threaded receiver element, and wherein the threaded receiver element may be configured detachable from the shiftable plug section, may especially provide a modular system, wherein a lamp having any type of lamp base may be relatively easily (electrically and / or mechanically) coupled to any type of socket.

[0034] Turning to the light emitting section, the light emitting section may have a first width Wi parallel to the first axis Ai. In embodiments, the first width Wi may be selected from the range of > 3 cm, such as from the range of > 10 cm, especially from the range of > 15 cm. Additionally or alternatively, in embodiments, the first width Wi may be selected from the range of < 60 cm, such as from the range of < 50 cm, especially from the range of < 40 cm. Further, in embodiments, the light emitting section may have a first length Li perpendicular to the first axis Ai and parallel to the plug arrangement length Lp. Additionally, the light emitting section may have a first height Hi perpendicular to the first axis Ai and parallel to the plug arrangement height Hp. In embodiments, the first length Li and first height Hi may be individually selected from the range of < 10 cm, such as from the range of < 8 cm, especially from the range of < 7 cm, like from the range of < 6 cm. Additionally or alternatively, in embodiments, the first length Li and first height Hi may be individually selected from the range of > 2 cm, such as from the range of > 3 cm, especially from the range of > 3.5 cm, like from the range of > 4 cm. In embodiments, the first height Hi may be equal to or smaller than the second height H2 of the shiftable plug section. Hence, in embodiments, Hi < H2, such as Hi < 0.9*H2, especially Hi < 0.75*H2. Additionally or alternatively, in embodiments, Hi > 0.1 *H2, such as Hi > 0.25*H2, especially Hi > 0.5*H2. Further, in embodiments, the first height Hi may be (equal to or) larger than the second height H2 of the shiftable plug section. Hence, in embodiments, Hi > H2, such as Hi > 1.1 *H2, especially Hi > 1.25*H2, like Hi > 1.5*H2. Additionally or alternatively, in embodiments, Hi < 3*H2, such as Hi < 2.5*H2, especially Hi < 2*H2. Hence, in specific embodiments, the light emitting section may have a first height Hi perpendicular to the first axis Ai, and the shiftable plug section may have a second height H2 perpendicular to the first axis Ai, wherein Hi > H2. A light generating device wherein Hi > H2 may be more decorative than a light generating device wherein Hi < H2, as the base may not be “sticking out” from the light emitting section. Further, a light generating device wherein Hi > H2 may provide a light generating device having a relatively compact shiftable plug section compared to the light emitting section. As such, in luminaires having a height restriction, relatively more space may be available for (and occupied by) the light emitting section, facilitating a larger radiant flux from the luminaire.

[0035] In embodiments, the light emitting section may comprise a light transmissive envelope. The light transmissive envelope may especially comprise a light transmissive material, such as selected from the group comprising glass and (optically translucent and / or transparent) polymeric materials. Herein, the terms “optically transparent material” and “light transmissive material” may refer to a material transmissive for one or more wavelengths selected from the range of 190-1500 nm, such as selected from the range of 200-1000 nm, especially selected from the range of 380-780 nm. Especially, the light transmissive envelope may be light transmissive for visible light. The terms “visible”, “visible light” or “visible emission” and similar terms refer to light having one or more wavelengths in the range of about 380-780 nm. Further, in embodiments, the light transmissive envelope may be diffuse transmissive. That is, in embodiments, the light transmissive envelope may be configured to diffuse light incident on (and transmitted through) the light transmissive envelope. In embodiments, the light transmissive envelope may be configured at least partially surrounding the LED filament. Especially, in embodiments, the LED filament may be configured (at least partially) within the light transmissive envelope. In embodiments, the LED filament may comprise one or more electrical contacts, wherein the LED filament may be configured electrically coupled to the electrically conductive protruding elements through the one or more electrical contacts, and wherein the one or more electrical contacts may be configured extending from the light transmissive envelope. Here below some general embodiments relating to the LED filament are provided.

[0036] LED filaments as such are known, and are e.g. described in US 8,400,051 B2, W02020016058, WO2019197394, etc., which are herein incorporated by reference. In general, a LED filament may in embodiments comprise (i) a plurality of solid state light sources (such as e.g. a plurality of light emitting diodes (LEDs)), arranged on (at least a first major surface of) an elongated carrier, and (ii) an elongated encapsulant covering the plurality of solid state light sources and at least part of the elongated carrier. In embodiments, the elongated carrier (of the LED filament) may support the solid state light sources. The elongated carrier may e.g. comprise one or more of glass, quartz, metal, sapphire, and a (flexible) polymeric material. In embodiments, the elongated carrier may be light transmissive, translucent, or transparent for light, especially visible light. Alternatively, in embodiments, the carrier may be (diffuse) reflective, especially (diffuse) reflective for one or more of the light source light and the LED filament light (see below). In embodiments, the (elongated) carrier may comprise a first major surface at a first side of the carrier and a second major surface at a second side of the carrier, opposite to the first side. In embodiments, the solid state light sources may be arranged on at least one of these surfaces.

[0037] In embodiments, the solid state light sources may comprise LEDs. Alternatively or additionally, in embodiments, the solid state light sources may comprise one or more of LEDs, laser diodes, superluminescent diodes, and (stacked) multi -junction diodes. The (plurality of) solid state light sources may be arranged in an array (on the elongated carrier). In embodiments, the number of solid state light sources in the array may be selected from the range of 10-2000, such as from the range of 10-1500, especially from the range of 10-1000. In embodiments, the solid state light sources may be configured in a ID (linear) array on the first major surface of the carrier. Alternatively, in embodiments, the solid state light sources may be configured in two ID arrays, one on the first major surface and one on the second major surface. A 2D array of solid state light sources of n*m LEDs may also be possible. In embodiments, n may be selected from the range of 1-4, such as 1-3, like 1-2, such as in embodiments 1 or in embodiments 2, and m may be selected from the range of larger than n, such as especially selected from the range of at least 4 (when n<4), like at least 6, such as at least 8.

[0038] In embodiments, the LED filament may comprise an encapsulant. The encapsulant may (at least partly) cover the plurality of solid state light sources. Especially, the encapsulant may cover at least 50% of the total number of solid state light sources in the array, such as at least 75%, especially at least 95%, up to 100%. Further, the encapsulant may cover at least part of the elongated carrier, such as at least (part of) one of the first major and second major surface. In general, the encapsulant may be in contact with the elongated carrier and may cover all of the solid state light sources. The encapsulant may be a continuous coating. In embodiments, the encapsulant may comprise one or more of a luminescent material and a light scattering material. The one or more of the luminescent material and the light scattering material may especially be configured embedded in an encapsulant material, e.g. a (flexible) polymer material (such as a silicone). In embodiments, the luminescent material may be configured to convert at least part, such as all, of the light source light (generated by the solid state light sources) into luminescent material light. In specific embodiments, the luminescent material may comprise a phosphor such as an inorganic phosphor and / or quantum dots or rods. Further, in embodiments, the light scattering material may be configured to scatter (or “diffuse”) the light source light, especially in a direction transverse to a normal of the (first and / or second) major surface. In specific embodiments, the light scattering material may comprise light scattering particles, such as e.g. at least one of BaSO4, A12O3 and TiCL particles.

[0039] In embodiments, the LED filament may be configured to generate filament light, which may comprise one or more of (scattered) light source light and luminescent material light. The term “LED filament light” may refer to the light emitted by the LED filament during operation of the LED filament. Further, the solid state light sources, comprised by the LED filament, may be configured to generate light source light. In embodiments, at least two, such as all, of the solid state light sources may be configured to emit light source light having different spectral power distributions. In other embodiments, at least two, such as all, of the solid state light sources may be configured to provide light source light having essentially the same spectral power distribution. In embodiments, the filament light may at least comprise light at a wavelength selected from the range of 380-780 nm, i.e., visible light. In embodiments, the filament light may at least comprise white light. The term “white light”, and similar terms, herein, is known to the person skilled in the art. It may especially relate to light having a correlated color temperature (CCT) between about 1800 K and 20000 K, such as between 2000 and 20000 K, especially 2700-20000 K, for general lighting especially in the range of about 2000-7000 K, such as in the range of 2700- 6500 K. Especially, the filament light may be relatively warm (white) light, such as selected from the range of 1500 - 3000 K, especially selected from the range of 1500 - 2700 K, most especially selected from the range of 1800-2700 K. In embodiments, the LED filament may comprise multiple sub-filaments.

[0040] In embodiments, the light generating device may be configured to generate a beam of device light. The device light may comprise the filament light, and may even (essentially) consist of the filament light. Alternatively, the light transmissive envelope may be configured to diffuse the filament light received by the light transmissive envelope, and the device light may comprise diffused filament light. In embodiments, the light generating device may be configured to emit (at least part of) the device light in a plurality of directions perpendicular to the first axis Ai. Especially, in embodiments, the light generating device may be configured to emit the (beam of) device light over a beam angle a.b around the first axis Ai. That is, looking straight down the first axis Ai, the beam of device light may have an (internal) beam angle at>. Herein, the beam angle ab may especially be defined by a full width half maximum of the beam, as is known to a person skilled in the art. In embodiments, the beam angle ab may be selected from the range of < 355°, such as from the range of < 340°, especially from the range of < 300°, like from the range of < 270°. Alternatively, in embodiments, the beam angle ab may be selected from the range of > 180°, such as from the range of > 230°, especially from the range of > 270°, like from the range of > 300°. Further, in embodiments, the beam angle ab may be selected from the range of > 320°, such as from the range of > 340°, especially from the range of > 350°, including 360°. Hence, in embodiments, the light generating device may be configured to emit light in a full circle (i.e., in all directions) around the first axis Ai. Further, in specific embodiments, the light generating device may be configured to generate a beam of device light, wherein the light generating device may be configured to emit device light over a beam angle ab around the first axis Ai, wherein the beam angle ab may be selected from the range of > 300°, and wherein the beam angle may be defined by a full width half maximum of the beam. Such a light generating device may facilitate generating a relatively broad beam of device light. This may provide the benefit that only a single light generating device may be needed to provide light all around e.g. a (vertical) streetlight. This may especially be beneficial for smaller streetlights, which may only have space for one light generating device.

[0041] In embodiments, the light generating device may be applied in e.g. luminaires. Hence, in embodiments, the light generating system may comprise a luminaire. The luminaire may especially comprise a housing and a luminaire socket. In embodiments, the light generating device may be configured electrically (and mechanically) coupled to the luminaire socket via the shiftable plug section (especially via the array of electrically conductive protruding elements). Optionally, the light generating device may further be configured mechanically coupled to the luminaire socket via the interlocking protruding element of the shiftable plug section. Further, in embodiments, the housing may be configured at least partially surrounding the light generating device. Hence, in specific embodiments, the light generating system may comprise a luminaire, wherein the luminaire may comprise a housing and a luminaire socket, wherein the light generating device may be configured electrically coupled to the luminaire socket via the shiftable plug section, and wherein the housing may be configured at least partially surrounding the light generating device. A light generating system comprising a luminaire may provide the benefit that the light generating device, such as especially the electrical components in the light generating device, may be protected from ingress (e.g. dirt and / or water) by the luminaire, especially by the luminaire housing. Further, a light generating system comprising a luminaire socket may facilitate electrically coupling the light generating device to a power grid.

[0042] In embodiments, the luminaire may be an indoor luminaire. Alternatively, the luminaire may be an outdoor luminaire, such as a road lamp and / or streetlight. Further, in embodiments, the luminaire socket may be selected from the group comprising a 2G11, 2GX7, G23, GX23, G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-2, GX24q- 3, GX24q-4, GX23-2, GX32d-2, and GC32d-3 socket. Especially, in embodiments, the luminaire socket may be selected from the group of a PLL, PLS, PLC, and PLT socket. In embodiments, PLL, PLS, PLC, and PLT sockets may collectively be referred to as PLx sockets. Hence, in embodiments, the invention may provide an LED road lamp with a conventional PLx socket.

[0043] In embodiments, the housing of the luminaire may comprise a light transmissive window. The light transmissive window may in embodiments especially be transmissive for the device light. Further, in embodiments, device light may exit the light generating system through the light transmissive window. The light transmissive window may comprise a light transmissive material, such as selected from the group comprising glass and (optically translucent and / or transparent) polymeric materials. In embodiments, the light transmissive window may be diffuse transmissive, i.e., the light transmissive window may be configured to diffuse (device) light received by the light transmissive window to provide diffused (device) light. Alternatively, the light transmissive window may be transparent for device light.

[0044] In embodiments, as indicated above, the (luminaire) housing may be configured at least partially, especially fully, surrounding the light generating device. Further, in embodiments, the shiftable plug section may be configured electrically (and / or mechanically) coupled to the luminaire socket, wherein the light emitting section (and (threaded) receiver element) may be configured shiftable within the (luminaire) housing. Especially, the light emitting section (and (threaded) receiver element) may be configured shiftable over a total distance of 2*d and / or 2*dS2 within the housing, wherein d and dS2 are the (maximum) shift distances in the first and second direction, respectively. This may provide the benefit that, for luminaires having a limited height of the housing, the light emitting section (and (threaded) receiver element) may be shifted relative to the shiftable plug section (and luminaire socket) to facilitate fitting the light generating device in the housing.

[0045] As indicated above, the (threaded) receiver element may be configured detachable from the (threaded) connector element. Hence, in embodiments, the plug arrangement may be configured detachable from the light emitting section (connected to the connector element). The plug arrangement may thus be provided separately from the light emitting section (and connector element). Hence, according to a second aspect, the invention provides a plug arrangement. The plug arrangement especially comprises a (threaded) receiver element and a shiftable plug section. The shiftable plug section comprises an array of electrically conductive protruding elements. In embodiments, the array of electrically conductive protruding elements is configured electrically coupled to the threaded receiver element. Further, in embodiments, the (threaded) receiver element comprises an Edison screw socket selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an E18, an E26, an E27, an E33, an E39, and an E40 socket. In embodiments, the shiftable plug section is configured shiftable relative to the (threaded) receiver element. Hence, in specific embodiments, the invention provides a plug arrangement comprising a threaded receiver element and a shiftable plug section, wherein: (A) the shiftable plug section comprises an array of electrically conductive protruding elements; wherein the array of electrically conductive protruding elements is configured electrically coupled to the threaded receiver element; (B) the threaded receiver element comprises an Edison screw socket selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an El 8, an E26, an E27, an E33, an E39, and an E40 socket; and (C) the shiftable plug section is configured shiftable relative to the threaded receiver element. Such a plug arrangement may provide the benefit that a light source comprising an Edison screw base may be (electrically and / or mechanically) coupled to a socket having a complementary configuration to the shiftable plug section. Hence, such a plug arrangement may function as an adapter for light sources and / or sockets. Further, such a plug arrangement may facilitate adjusting the relative configurations of the threaded receiver element and the shiftable plug section based on the dimensions and / or configuration of the system to which the plug arrangement will be (electrically and / or mechanically) coupled.

[0046] In embodiments, the plug arrangement of the invention may be the plug arrangement from the light generating device of the invention. Hence, embodiments relating to the plug arrangement of the light generating device may also apply to the plug arrangement of the invention. Several specific embodiments relating to the plug arrangement of the invention will be described here below.

[0047] In embodiments, the shiftable plug section may be configured shiftable relative to the threaded receiver element over a shift distance (d). Especially, the threaded receiver element may have a receiver element first side configured facing the shiftable plug section, wherein the shiftable plug section may be configured shiftable with regard to a geometrical center of the receiver element first side (and within a plane parallel to the receiver element first side), and wherein in an extreme position of the shiftable plug section (a geometrical center of) the shiftable plug section may have a distance of (d) with regard to (the geometrical center of) the receiver element first side. In embodiments, the shiftable plug guide may be configured extending from the receiver element first side. Further, in embodiments, the shiftable plug section may be configured at any distance from the geometrical center of the receiver element first side selected from the range of 0-d. In embodiments, as indicated above, the shift distance (d) may be selected from the range of 0.5-100 mm, such as from the range of 1-75 mm, especially from the range of 2-50 mm, like from the range of 5-40 mm. Hence, in specific embodiments, the shiftable plug section may be configured shiftable over a shift distance (d) selected from the range of 2-50 mm.

[0048] In embodiments, the shiftable plug section may have the (maximum) shift distance (d) in one or more (opposite) directions from the geometrical center of the receiver element first side. In embodiments, the (maximum) shift distances in the one and another (opposite) direction (from the geometrical center of the receiver element first side) may deviate by 0-100%, such as 10-75%, especially 25-50%, relative to the (maximum) shift distance (d). Further, in embodiments, the shiftable plug section may have the (maximum) shift distance (d) in a third and optionally fourth direction from the geometrical center of the receiver element first side, wherein the third direction may be opposite to the fourth direction, and wherein the third (and fourth) direction may be configured at an angle to the one (and another) direction selected from the range of 5-90°.

[0049] In embodiments, as indicated above, the array of electrically conductive protruding elements (of the plug arrangement) may comprise a linear array of nl electrically conductive protruding elements. In embodiments, nl may be selected from the range of 2-6, such as from the range of 2-5, especially from the range of 2-4. In specific embodiments, nl = 4. In embodiments, all or a subset of the nl electrically conductive protruding elements may be configured electrically coupled to the threaded receiver element. Especially, in embodiments, > 1, such as > 2, especially > 3, like > 4, of the nl electrically conductive protruding elements may be configured electrically coupled to the threaded receiver element. In specific embodiments, nl = 4, wherein two of the electrically conductive protruding elements may be configured electrically coupled to the threaded receiver element, and wherein said two electrically conductive protruding elements may be configured on opposite ends of the linear array. Hence, in specific embodiments, the array of electrically conductive protruding elements may comprise a linear array of nl electrically conductive protruding elements; wherein nl=4. Such an array may provide the benefit that the plug arrangement may facilitate electrically (and / or mechanically) coupling a light source comprising an Edison screw base to a PLL socket. Hence, such a plug arrangement may provide an adapter for e.g. a streetlight (luminaire) comprising a conventional PLL socket.

[0050] In specific embodiments, the plug arrangement may (further) comprise an interlocking protruding element configured between at least two electrically conductive protruding elements (see above). Such an interlocking protruding element may provide the benefit that, upon electrically coupling the plug arrangement to a socket, the interlocking protruding element may facilitate a (stronger) mechanical coupling to the socket. Further, a plug arrangement comprising an interlocking protruding element may facilitate electrically (and / or mechanically) coupling the plug arrangement to one or more of a PLS socket, a PLC socket, and a PLT socket.

[0051] In embodiments, the shiftable plug section may be configured detachable from the threaded receiver element. Especially, in embodiments, the shiftable plug section may be configured detachable from the threaded receiver element by (removing and / or retracting the end locking mechanism and) sliding the shiftable plug section from the (first and / or second) shiftable plug guide (see also above). Hence, in specific embodiments, the shiftable plug section may be configured detachable from the threaded receiver element. A detachable shiftable plug section may facilitate that a user may exchange one or more of the threaded receiver element and the shiftable plug section for a threaded receiver element comprising a different size Edison screw and / or a shiftable plug section configured to interlock with a different type of PLx socket.

[0052] In embodiments, the invention may further provide a (threaded) receiver element. Especially, the invention may provide a range of (threaded) receiver elements (each) comprising an Edison screw socket having a different size (or comprising a different size and / or shape of a different socket type, e.g. comprising a GU10 socket of the twist and lock socket type). Similarly, in embodiments, the invention may provide a shiftable plug section, such as especially a range of shiftable plug sections (each) configured to be electrically (and / or mechanically) coupled to a different PLx socket type. In embodiments, a consumer may be able to select a suitable shiftable plug section and (threaded) receiver element for each (adapter) situation, and shiftable attach the shiftable plug section to the (threaded) receiver element to provide the (desired) plug arrangement. Hence, according to a further aspect, the invention may provide a kit of parts comprising a (threaded) receiver element and a shiftable plug section. The shiftable plug section may comprise an array of electrically conductive protruding elements. Further, the receiver element may comprise a socket selected from the group comprising twist and lock sockets, fluorescent pin sockets, bi-pin sockets, wedge sockets, bayonet sockets, and (Edison) screw sockets. Especially, the receiver element may be a threaded receiver element, wherein the threaded receiver element may comprise an Edison screw socket. Further, in embodiments, the shiftable plug section and the threaded receiver element may be configured to be electrically and mechanically coupled, wherein the shiftable plug section may be configured to be shiftable with respect to the threaded receiver element. Hence, in specific embodiments, the invention may provide a kit of parts comprising a threaded receiver element and a shiftable plug section, wherein: (A) the shiftable plug section may comprise an array of electrically conductive protruding elements; (B) the threaded receiver element may comprise an Edison screw socket selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an E18, an E26, an E27, an E33, an E39, and an E40 socket; and (C) the shiftable plug section and the threaded receiver element may be configured to be electrically and mechanically coupled, wherein the shiftable plug section may be configured to be shiftable with respect to the threaded receiver element. Such a kit of parts may provide the benefit that the (threaded) receiver element and the shiftable plug section may be provided separately and in dependance of the adapter needed. Hence, a user may not need to purchase a large number of adapters to cover all possible configurations of receiver element and shiftable plug section, but may purchase separate modules of the receiver element and the shiftable plug section which may be electrically (and / or mechanically) coupled as needed.

[0053] The light generating system may be part of or may be applied in e.g. office lighting systems, household application systems, shop lighting systems, home lighting systems, accent lighting systems, spot lighting systems, theater lighting systems, fiber-optics application systems, projection systems, self-lit display systems, pixelated display systems, segmented display systems, warning sign systems, medical lighting application systems, indicator sign systems, decorative lighting systems, portable systems, automotive applications, (outdoor) road lighting systems, urban lighting systems, green house lighting systems, horticulture lighting, digital projection, or LCD backlighting. The light generating system (or luminaire) may be part of or may be applied in e.g. optical communication systems or disinfection systems. Especially, in embodiments, the light generating system may be a part of or may be applied in a streetlight.

[0054] Hence, according to a third aspect, the invention provides a streetlight comprising the light generating system as defined herein. The streetlight further comprises a streetlight housing and a streetlight socket. In embodiments, the light generating system is configured electrically and mechanically coupled to the streetlight socket (via the plug arrangement). Further, in embodiments, the streetlight housing is configured (at least partially) surrounding the light generating system. In embodiments, the streetlight housing comprises a light transmissive window. Further, the streetlight housing has a housing dimension Hh in a direction perpendicular to the first axis Ai. In embodiments, the light emitting section is configured shiftable along the housing dimension Hh. Hence, in specific embodiments, the invention provides a streetlight comprising the light generating system as defined herein, a streetlight housing, and a streetlight socket, wherein the light generating system is configured electrically and mechanically coupled to the streetlight socket, wherein the streetlight housing is configured surrounding the light generating system, wherein the streetlight housing comprises a light transmissive window, wherein the streetlight housing has a housing dimension Hh in a direction perpendicular to the first axis Ai, and wherein the light emitting section is configured shiftable along the housing dimension Hh. Such a streetlight may provide the benefit that a light source (such as a lamp) having a (standard) base (e.g. an Edison screw base) may be used in a streetlight having a conventional PLx-type socket. Further, such a streetlight may provide the benefit that the light emitting section may be configured shiftable within the streetlight housing, thereby facilitating an improved arrangement of streetlight components within the streetlight housing and allowing a reduction in size of the streetlight housing.

[0055] In embodiments, the streetlight socket may be selected from the group comprising a 2G11, 2GX7, G23, GX23, G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-2, GX24q-3, GX24q-4, GX23-2, GX32d-2, and GC32d-3 socket. Especially, in embodiments, the streetlight socket may be a PLx socket, such as selected from the group of a PLL socket, a PLS socket, a PLC socket, and a PLT socket.

[0056] In embodiments, it may be needed to protect the light generating system against ingress. Hence, in embodiments, the light generating system may be at least partially enclosed by the streetlight housing. Especially, in embodiments, the light generating system may be (essentially) fully enclosed by the streetlight housing. In embodiments, the streetlight housing may comprise one or more walls. The one or more walls may, in embodiments, comprise one or more materials selected from the group comprising a (bio)plastic, a glass, and a metal. In embodiments, when the one or more walls comprise metal, the streetlight housing may act as a heat sink for the light generating system. Further, in embodiments, the streetlight housing may comprise a light transmissive window. The light transmissive window may especially be transmissive for the device light. Hence, in embodiments, device light may exit the streetlight through the light transmissive window. The light transmissive window may comprise a light transmissive material, such as selected from the group comprising glass and (optically translucent and / or transparent) polymeric materials. In embodiments, the light transmissive window may be diffuse transmissive, i.e., the light transmissive window may be configured to diffuse (device) light received by the light transmissive window to provide diffused (device) light. Alternatively, the light transmissive window may be transparent for device light, and may (essentially) not diffuse the device light received by the light transmissive window.

[0057] In embodiments, the streetlight housing may have a housing dimension Hh in a direction perpendicular to the first axis Ai (and parallel to the plug arrangement height Hp). In embodiments, the housing dimension Hh may be selected from the range of < 50 cm, such as from the range of < 40 cm, especially from the range of < 30 cm, like from the range of < 20 cm. Additionally or alternatively, in embodiments, the housing dimension Hh may be selected from the range of > 5 cm, such as from the range of > 7 cm, especially from the range of > 10 cm, like from the range of > 15 cm. In (other) embodiments, the housing dimension Hh may be selected from the range of > Hp, such as from the range of > 1.5*HP, especially from the range of > 2*HP, like from the range of > 5*HP. Additionally or alternatively, in embodiments, the housing dimension Hh may be selected from the range of < 20*Hp, such as from the range of < 15*HP, especially from the range of < 10*Hp, like from the range of < 8*HP. In embodiments, the light emitting section may be configured shiftable (within the streetlight housing) along the housing dimension Hh. Especially, the light emitting section may be configured shiftable (along the housing dimension Hh) over a total (maximum) distance of 2*d, wherein d is the (maximum) shift distance.

[0058] In embodiments, the light generating device (comprised by the streetlight) may be configured to generate a beam of device light. Especially, the light generating device may be configured to emit device light over a beam angle ab around the first axis Ai (see also above). Herein, the beam angle ab may especially be defined by a full width half maximum of the beam, as is known to a person skilled in the art. In embodiments, the beam angle ab may be selected from the range of < 355°, such as from the range of < 340°, especially from the range of < 300°, like from the range of < 270°. In embodiments, the light generating device may be configured to generate a relatively narrow beam of device light, such as wherein ab < 180°, especially ab < 100°, like ab < 70°. Alternatively, the light generating device may be configured to generate a relatively broad beam of device light. Hence, in embodiments, the beam angle ab may be selected from the range of > 180°, such as from the range of > 230°, especially from the range of > 270°, like from the range of > 300°. Further, in embodiments, the beam angle ab may be selected from the range of > 320°, such as from the range of > 340°, especially from the range of > 350°, including (essentially) 360°. Hence, in specific embodiments, the light generating device may be configured to generate a beam of device light, wherein the light generating device may be configured to emit device light over a beam angle ab around the first axis Ai, wherein the beam angle ab may be selected from the range of > 300°, and wherein the beam angle may be defined by a full width half maximum of the beam. A streetlight comprising such a light generating device may facilitate generating a relatively broad beam of device light. This may provide the benefit that only a single light generating device may be needed to provide light all around the streetlight. This may especially be beneficial for smaller streetlights, which may only have space for one light generating device for providing light all around the streetlight.

[0059] The system, or apparatus, or device may execute an action in a “mode” or “operational mode”. The term “operational mode” may also be indicated as “controlling mode”. This does not exclude that the system, or apparatus, or device may also be adapted for providing another controlling mode, or a plurality of other controlling modes. Likewise, this may not exclude that before executing the mode and / or after executing the mode one or more other modes may be executed. However, in embodiments a control system may be available, that is adapted to provide at least the controlling mode. Would other modes be available, the choice of such modes may especially be executed via a user interface, though other options, like executing a mode in dependence of a sensor signal or a (time) scheme, may also be possible. The operational mode may in embodiments also refer to a system, or apparatus, or device, that can only operate in a single operation mode (i.e. “on”, without further tunability).

[0060] BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

[0062] Fig. 1-3 schematically depict embodiments of the light generating system;

[0063] Fig. 4A schematically depicts a further embodiment of the light generating system;

[0064] Fig 4B-C schematically depict embodiments of the plug arrangement; and Fig. 5 schematically depicts an embodiment of the streetlight.

[0065] The schematic drawings are not necessarily to scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0066] Fig. 1 schematically depicts an embodiment of the light generating system 1000 comprising the light generating device 100. The light generating device 100 comprises a light emitting section 200 and a plug arrangement 4000. Further, the light generating device 100 may comprise a first (center) axis Ai, wherein the first axis Ai may be configured intersecting the light emitting section 200 and the plug arrangement 4000. The first (center) axis Ai may further be configured at a (geometrical) center of the light emitting section 200. In embodiments, the light emitting section 200 may have a first width Wi parallel to the first axis Ai. Additionally, the light emitting section 200 may have a first length Li and first height Hi perpendicular to the first axis Ai, wherein the light emitting section 200 may further have the first length Li in a direction perpendicular to the first height Hi. The light emitting section 200 may be mechanically (and electrically) coupled to the plug arrangement 4000. Further, the light emitting section 200 may comprise a LED filament 210 and a light transmissive envelope 220. The light transmissive envelope 220 may be configured at least partially surrounding the LED filament 210.

[0067] As indicated above, the light emitting section 200 and the plug arrangement 4000 may be mechanically (and electrically) coupled. The plug arrangement 4000 may comprise a shiftable plug section 4300. The shiftable plug section 4300 may comprise an array 4050 of electrically conductive protruding elements 4010. The array 4050 of electrically conductive protruding elements 4010 may especially be configured electrically coupled to the LED filament 210. In embodiments, the shiftable plug section 4300 may be configured shiftable (in a plurality of positions) with regard to the light emitting section 200 in a first direction perpendicular to the first axis Ai. Further, the plug arrangement 4000 may have a plug arrangement height Hpperpendicular to the first axis Ai (and parallel to the first height Hi), and a plug arrangement length Lpperpendicular to the first axis Ai and the plug arrangement height Hp. Further yet, the plug arrangement 4000 may have a plug arrangement width Wpparallel to the first axis AL

[0068] The plug arrangement 4000 may comprise an interlocking protruding element 4020. The interlocking protruding element 4020 may be configured between at least two electrically conductive protruding elements 4010. Especially, the array 4050 of electrically conductive protruding elements 4010 may comprise a first subset of electrically conductive protruding elements 4010 and a second subset of electrically conductive protruding elements 4010, wherein the interlocking protruding element 4020 may be configured between the first subset and the second subset. In the embodiment depicted in Fig. 1, the first subset and second subset each comprise two electrically conductive protruding elements 4010, wherein the first subset and second subset together form a (2x2) array 4050 of electrically conductive protruding elements 4010. Further, in embodiments, the interlocking protruding element 4020 may comprise one or more interlocking retention features 4021 configured on one or more sides of the interlocking protruding element 4020. The one or more interlocking retention features 4021 may be configured projecting from (or extending from) the one or more sides of the interlocking protruding element 4020 in a direction perpendicular to the first axis AL Further, the one or more interlocking retention features 4021 may be configured to interlock with one or more interlocking receiving elements in an (electrical) socket (not depicted). Hence, in embodiments, the one or more interlocking retention features 4021 may be configured to mechanically couple the plug arrangement 4000, especially the shiftable plug section 4300, to an (electrical) socket. Especially, the plug arrangement 4000 (comprising the interlocking protruding element 4020) may be configured to form a plugsocket configuration with a socket selected from the group of a G24d-1, G24d-2, G24d-3, G24q-1, G24q-2, G24q-3, GX24q-3, and GX24q-4 socket (i.e., a PLC and / or PLT socket).

[0069] Fig. 2 schematically depicts a further embodiment of the light generating system 1000 comprising the light generating device 100. The light generating device 100 may comprise a connector element 230, wherein the LED filament 210 may be configured electrically coupled to the connector element 230. As depicted in Fig. 2(111), in embodiments the connector element 230 may especially be a threaded connector element 230. Further, the plug arrangement 4000 may comprise a receiver element 4110, wherein the receiver element 4110 may especially be configured complementary to the connector element 230, such that the receiver element 4110 and connector element 230 may be electrically and mechanically coupled. As depicted in Fig. 2(11), the receiver element 4110 may be a threaded receiver element 4110. The (threaded) receiver element 4110 may be configured electrically coupled with the (threaded) connector element 230. Further, the (threaded) receiver element 4110 may be configured electrically coupled with the array of electrically conductive protruding elements 4010. In embodiments, the (threaded) receiver element 4110 may be configured detachable from the (threaded) connector element 230 (e.g. by unscrewing the threaded connector element 230 from the threaded receiver element 4110). Further, the shiftable plug section 4300 may be configured shiftable relative to the threaded receiver element 4110.

[0070] Fig. 2(1) schematically depicts an embodiment of the assembled light generating device 100, wherein the (threaded) connector element 230 is configured electrically and mechanically coupled to the (threaded) receiver element 4110. In embodiments, the plug arrangement 4000 of the light generating device 100 may be configured to form a plug-socket configuration with a socket selected from the group of a 2G11, G23, and GX23 socket (i.e., with a PLL and / or PLS socket). Especially, as depicted here, the array 4050 of electrically conductive protruding elements 4010 may comprise a linear array of nl electrically conductive protruding elements 4010, wherein nl=4. Further, at least two of the electrically conductive protruding elements 4010 (of the linear array 4050) may be configured electrically coupled to the LED filament 210. This is schematically depicted in Fig. 2(11), where the outer electrically conductive protruding elements 4010 are configured electrically coupled to the LED filament 210 (via the threaded receiver element

[0071] 4110 and the threaded connector element 230).

[0072] Fig. 2(11) schematically depicts a light generating device 100 wherein the threaded receiver element 4110 is detached from the threaded connector element 230. In embodiments, as depicted in Fig. 2(11), the threaded connector element 230 may especially comprise an Edison screw base. Further, the (threaded) connector element 230 may comprise one or more fixating protrusions 231. The one or more fixating protrusions 231 may especially be configured to interlock with one or more fixating channels 4111 comprised by the threaded receiver element 4110 (see also below).

[0073] Fig. 2(111) schematically depicts a cross-section of the plug arrangement 4000 of the light generating device 100. Further, Fig. 2(111) schematically depicts a cross-section of the plug arrangement 4000 of the invention, comprising the shiftable plug section 4300 and the (threaded) receiver element 4110. The shiftable plug section 4300 may have a second length L2 in a direction perpendicular to the first axis Ai (and parallel to the plug arrangement length Lp). The threaded receiver element 4110 may especially comprise an Edison screw socket. Further, the threaded receiver element 4110 may comprise one or more fixating channels 4111, configured to interlock with the one or more fixating protrusions 231 of the (threaded) connector element 230. Referring to Fig. 2(111), the one or more fixating channels

[0074] 4111 may for instance be configured comprised by a top section of the threaded receiver element 4110, wherein the top section may be configured (rotatably) connected to the (remainder of the) threaded receiver element 4110. Upon screwing the threaded connector element 230 into the threaded receiver element 4110, the one or more fixating protrusions 231 may be guided into the one or more fixating channels 4111, wherein at an extreme position of the (screwed-together) threaded connector element 230 and threaded receiver element 4110 the one or more fixating protrusions 231 may be configured in the end section of the one or more fixating channels 4111. Upon unscrewing of the threaded connector element 230 from the threaded receiver element 4110, one or more of the one or more fixating protrusions 231, threaded connector element 230, and threaded receiver element 4110 may first need to be pressed downwards to facilitate guiding the one or more fixating protrusions 231 from the (end section of the) one or more fixating channels 4111, thereby preventing an accidental unscrewing by e.g. vibrations. The threaded receiver element 4110 may have a receiver element first side 4111 configured facing the shiftable plug section 4300, wherein the shiftable plug section 4300 may be configured shiftable with regard to a geometrical center of the receiver element first side 4111 (and within a plane parallel to the receiver element first side 4111). Further, in embodiments, the shiftable plug section 4300 may be configured (slidably) detachable from the threaded receiver element 4110.

[0075] Fig. 3 schematically depicts an embodiment of the light generating device 100 during shifting of the shiftable plug section 4300. Fig. 3(1) schematically depicts a center (or starting) position of the shiftable plug section 4300 with regard to the light emitting section 200 (and (threaded) receiver element 4110). Fig. 3(11) and Fig. 3 (III) schematically depict a first and second extreme position of the shiftable plug section 4300 with regard to the light emitting section 200 (and (threaded) receiver element 4110), respectively. The shiftable plug section 4300 may be configured shiftable (with respect to a center position) over a shift distance (d) along the first direction perpendicular to the first axis AL Further, the shiftable plug section 4300 may be configured shiftable (with respect to a center position) over a shift distance (d) with regard to the geometrical center of the receiver element first side 4111 (and within a plane parallel to the receiver element first side 4111). Herein, the (maximum) shift distance (d) may especially be an amplitude with regard to a center (starting) position. In embodiments, the shift distance (d) may be selected from the range of 2-50 mm.

[0076] The plug arrangement 4000 may comprise a shiftable plug guide 4500, configured extending from the receiver element first side 4111. The shiftable plug guide 4500 may be configured to guide the shifting movement of the shiftable plug section 4300. In embodiments, the shiftable plug guide 4500 may have a profile in a cross-section parallel to the first axis Ai selected from the group comprising a T-profile, an I-profile, an H-profile, a C -profile, and a U-profile. Further, in embodiments, the shiftable plug section 4300 may comprise one or more interlocking features 4310 (see Fig. 4), wherein the one or more interlocking features 4310 may be configured to slidably interlock with the shiftable plug guide 4500 (e.g. by hooking around the head of a shiftable plug guide having a T-profile). The plug arrangement 4000 may further comprise a locking mechanism 4400. The locking mechanism 4400 may especially be configured to mechanically lock the (selected) position of the shiftable plug section 4300. The shiftable plug section 4300 may have a second height H2 perpendicular to the first axis Ai. In embodiments, Hi > H2. Further, as depicted in Fig. 3, the light generating device 100 may be configured to generate a beam 1 of device light 101. Especially, the light generating device 100 may be configured to emit (the beam 1 of) device light 101 over a beam angle ab around the first axis Ai. In embodiments, the beam angle ab may be selected from the range of > 300°. In Fig. 3(1), the beam angle ab is equal to 360°.

[0077] Fig. 4A schematically depicts a further embodiment of the light generating device 100. The shiftable plug guide 4500 may comprise a rail having a T-profile, and the one or more interlocking features 4310 may comprise hooks configured to hook around the head of the T-profile. Further, as depicted in Fig. 4A, the locking mechanism 4400 may comprise one or more pins, wherein the one or more pins are configured to be provided to one or more through holes in the slidable plug guide 4500, thereby preventing a (further) movement of the shiftable plug section 4300 in one or more directions.

[0078] Fig. 4B schematically depicts a further embodiment of the locking mechanism 4400, as viewed from the receiver element first side 4111 and looking towards the shiftable plug section 4300. Here, the locking mechanism 4400 comprises a plurality of (blunt) serrations. The plurality of (blunt) serrations may be configured retracted into the shiftable plug guide 4500 in a first configuration, and configured extending from the shiftable plug guide 4500 (and around the one or more interlocking features 4310) in a second configuration. In embodiments, the (blunt) serrations configured covered by the one or more interlocking features 4310 may not be extended in the second configuration.

[0079] Fig. 4C schematically depicts a further embodiment of the shiftable plug guide 4500, as viewed from the receiver element first side 4111 and looking towards the shiftable plug section 4300. The shiftable plug section 4300 may further be configured shiftable (with regard to the light emitting section 200 and / or the receiver element 4110) in a second direction perpendicular to the first axis Ai. In embodiments, the second direction may be perpendicular to the first direction. As depicted in Fig. 4C, the threaded receiver element 4110 may comprise a second shiftable plug guide 4500. Further, the one or more interlocking features 4310 of the shiftable plug section 4300 may be configured misaligned on the shiftable plug section 4300, thereby facilitating a movement of the shiftable plug section 4300 in the first and second direction. Further, the plug arrangement 4000 may comprise an end locking mechanism 4410. The end locking mechanism 4410 may be configured to prevent a detachment of the shiftable plug section 4300 from the (remainder of the) light generating device 100 and / or the threaded receiver element 4110 along the first direction and / or the second direction.

[0080] Fig. 5 schematically depicts an embodiment of the light generating system 1000 comprising a luminaire 2000. The luminaire 2000 may comprise a housing 2100 and a luminaire socket 2200, wherein the light generating device 100 may be configured electrically (and mechanically) coupled to the luminaire socket 2200 via the shiftable plug section 4300(, especially via the array of electrically conductive protruding elements 4010 and optionally via the interlocking protruding element 4020). In embodiments, the light emitting section 200 of the light generating device 100 may be configured movable within the housing 2100. Further, the housing 2100 may be configured at least partially surrounding the light generating device 100. Additionally, the housing 2100 may comprise a light transmissive window 2110, wherein the beam 1 of device light 101 may exit the luminaire 2000 via the light transmissive window 2110. Fig. 5 further schematically depicts an embodiment of the streetlight 5000 of the invention. The streetlight 5000 may comprise the light generating system 1000. Further, the streetlight 5000 may comprise a streetlight housing 5100 and a streetlight socket 5200. The light generating system 1000 may especially be configured electrically and mechanically coupled to the streetlight socket 5200 (via the plug arrangement 4000). Further, the streetlight housing 5100 may be configured (at least partially) surrounding the light generating system 1000. In embodiments, the streetlight housing 5100 may comprise a light transmissive window 5150. Further, the streetlight housing 5100 may have a housing dimension Hh in a direction perpendicular to the first axis Ai (and parallel to the plug arrangement height Hp). The light emitting section 200 may be configured shiftable along the housing dimension Hh. Further, the streetlight may comprise a support element 5300, configured to support one or more of the light generating system 1000, streetlight housing 5100, and streetlight socket 5200. As indicated above, the light generating device 100 (comprised by the streetlight 5000) may be configured to generate a beam 1 of device light 101. Especially, the light generating device 100 may be configured to emit (the beam 1 of) device light 101 over a beam angle ab around the first axis AL The beam angle ab may be selected from the range of > 300°. Especially, the beam angle may be defined by a full width half maximum of the beam 1. In embodiments, the streetlight 5000 may further comprise a control system 300, configured to control the light generating system 1000, such as especially the light generating device 100.

[0081] The term “plurality” refers to two or more. The terms “substantially” or “essentially” herein, and similar terms, will be understood by the person skilled in the art. The terms “substantially” or “essentially” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective substantially or essentially may also be removed. Where applicable, the term “substantially” or the term “essentially” may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term “comprise” also includes embodiments wherein the term “comprises” means “consists of’. The term “and / or” especially relates to one or more of the items mentioned before and after “and / or”. For instance, a phrase “item 1 and / or item 2” and similar phrases may relate to one or more of item 1 and item 2. The term "comprising" may in an embodiment refer to "consisting of but may in another embodiment also refer to "containing at least the defined species and optionally one or more other species". Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0082] The devices, apparatus, or systems may herein amongst others be described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation, or devices, apparatus, or systems in operation. It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

[0083] Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to”. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0084] The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a device claim or a system claim, enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. The invention also provides a control system that may control the device, apparatus, or system. Yet further, the invention also provides a computer program product which, when running on a computer which is functionally coupled to or comprised by the device or system, controls one or more controllable elements of such device or system. The invention further applies to a device or system comprising one or more of the characterizing features described in the description and / or shown in the attached drawings. The various aspects discussed in this patent can be combined in order to provide additional advantages. Further, the person skilled in the art will understand that embodiments can be combined, and that also more than two embodiments can be combined. Furthermore, some of the features can form the basis for one or more divisional applications.

Claims

CLAIMS:

1. A plug arrangement (4000) comprising a threaded receiver element (4110) and a shiftable plug section (4300), wherein: (a) the shiftable plug section (4300) comprises an array (4050) of electrically conductive protruding elements (4010); wherein the array (4050) of electrically conductive protruding elements (4010) is configured electrically coupled to the threaded receiver element (4110); (b) the threaded receiver element (4110) comprises an Edison screw socket selected from the group comprising an E5, an E10, an El l, an E12, an E14, an E16, an E17, an E18, an E26, an E27, an E33, an E39, and an E40 socket; and (c) the shiftable plug section (4300) is configured shiftable relative to the threaded receiver element (4110).

2. The plug arrangement (4000) according to claim 1, wherein the shiftable plug section (4300) is configured shiftable over a shift distance (d) selected from the range of 2-50 mm.

3. A light generating system (1000) comprising a light generating device (100), wherein the light generating device (100) comprises a light emitting section (200) and a plug arrangement (4000) according to any one of claims 1-2.

4. A light generating system (1000) according to claim 3, wherein: the light generating device (100) comprises a first axis (Ai) configured intersecting the light emitting section (200) and the plug arrangement (4000); the light emitting section (200) and the plug arrangement (4000) are mechanically coupled; the light emitting section (200) comprises a LED filament (210) and a light transmissive envelope (220) configured at least partially surrounding the LED filament (210); and wherein the array (4050) of electrically conductive protruding elements (4010) is configured electrically coupled to the LED filament (210); and wherein the shiftable plug section (4300) is configured shiftable with regard to the light emitting section (200) in a first direction perpendicular to the first axis (Ai).

5. The light generating system (1000) according to any one of claims 3-4, wherein: the light generating device (100) comprises a threaded connector element (230), wherein the LED filament (210) is configured electrically coupled to the threaded connector element (230); the plug arrangement (4000) comprises a threaded receiver element (4110), configured electrically coupled with (a) the threaded connector element (230), and (b) the array of electrically conductive protruding elements (4010); the threaded receiver element (4110) is configured detachable from the threaded connector element (230); and the shiftable plug section (4300) is configured shiftable relative to the threaded receiver element (4110).

6. The light generating system (1000) according to any one of claims 3-5, wherein the array (4050) of electrically conductive protruding elements (4010) comprises a linear array of nl electrically conductive protruding elements (4010); wherein nl=4; and wherein at least two of the electrically conductive protruding elements (4010) are configured electrically coupled to the LED filament (210).

7. The light generating system (1000) according to any one claims 3-6, wherein the plug arrangement (4000) of the light generating device (100) is configured to form a plug-socket configuration with a socket selected from the group of a 2G11 socket, a G23 socket, and a GX23 socket.

8. The light generating system (1000) according to claims 3-5, wherein the plug arrangement (4000) comprises an interlocking protruding element (4020) configured between at least two electrically conductive protruding elements (4010).

9. The light generating system according to claim 8, wherein the plug arrangement (4000) of the light generating device (100) is configured to form a plug-socket configuration with a socket selected from the group of a G24d-1 socket, a G24d-2 socket, a G24d-3 socket, a G24q-1 socket, a G24q-2 socket, a G24q-3 socket, a GX24q-3 socket, and a GX24q-4 socket.

10. The light generating system (1000) according to any one of claims 3-9, wherein the shiftable plug section (4300) is configured shiftable over a shift distance (d) along the first direction perpendicular to the first axis (Ai) selected from the range of 2-50 mm.

11. The light generating system (1000) according to any one of claims 3-10, wherein the plug arrangement (4000) comprises a locking mechanism (4400), wherein the locking mechanism (4400) is configured to mechanically lock the position of the shiftable plug section (4300).

12. The light generating system (1000) according to any one of claims 3-11, wherein the light generating device (100) is configured to generate a beam (1) of device light (101), wherein the light generating device (100) is configured to emit device light (101) over a beam angle (at>) around the first axis (Ai), wherein the beam angle (at>) is selected from the range of > 300°; wherein the beam angle is defined by a full width half maximum of the beam (1).

13. The light generating system (1000) according to any one of claims 3-12, wherein the shiftable plug section (4300) is further configured shiftable in a second direction perpendicular to the first axis (Ai), wherein the second direction is perpendicular to the first direction.

14. The light generating system (1000) according to any one of claims 3-13, wherein the light generating system (1000) comprises a luminaire (2000), wherein the luminaire (2000) comprises a housing (2100) and a luminaire socket (2200), wherein the light generating device (100) is configured electrically coupled to the luminaire socket (2200) via the shiftable plug section (4300), and wherein the housing (2100) is configured at least partially surrounding the light generating device (100).

15. A streetlight (5000) comprising the light generating system (1000) according to any one of claims 3-14, a streetlight housing (5100), and a streetlight socket (5200), wherein the light generating system (1000) is configured electrically and mechanically coupled to the streetlight socket (5200), wherein the streetlight housing (5100) is configuredsurrounding the light generating system (1000), wherein the streetlight housing (5100) comprises a light transmissive window (5150), wherein the streetlight housing (5100) has a housing dimension (Lh) in a direction perpendicular to the first axis (Ai), and wherein the light emitting section (200) is configured shiftable along the housing dimension (Lh).

16. The streetlight (5000) according to claim 15, wherein the light generating device (100) is configured to generate a beam (1) of device light (101), wherein the light generating device (100) is configured to emit device light (101) over a beam angle (at>) around the first axis (Ai), wherein the beam angle (at>) is selected from the range of > 300°; wherein the beam angle is defined by a full width half maximum of the beam (1).

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