DE102011076613B4 - LED lamp and method of manufacturing the LED lamp - Google Patents

Abstract

LED light with a circuit board (13) on which a plurality of light-emitting diodes (2) are arranged in the axial direction of the LED light, an upper shell (5, 28) and a lower shell (6, 40, 50, 60, 71), which are connected to one another in the assembled state of the LED light and hold the circuit board (13) between them, with a web (14) of thermal interface material which essentially completely surrounds the circuit board and has holes for the light-emitting diodes to pass through, wherein the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) together form a housing of the LED light and act as a heat sink for the heat generated on the circuit board, and the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) is in contact with the outside of the sheet (14) of thermal interface material when the lamp is assembled.

Description

technical field

The invention is based on an LED lamp which can be used, for example, as a replacement for fluorescent tubes and uses LED elements (light-emitting diodes) as light sources.

State of the art

WO 2011/012381 A1 discloses an LED lamp in which a plurality of light-emitting diodes are arranged within a housing having a substantially circular cross-section. In one embodiment, reflectors and lenses are provided for light beam shaping.

U.S. 2010/0220476 A1 discloses an LED light tube having a heat-dissipating base, a circuit board and a light cover. An inner light emitting layer of the light cover presses the circuit board to press the circuit board onto the tubular exothermic base. A heat dissipating layer may be placed between the circuit board and the base.

In general, safety requirements with regard to protection against electrical voltages must be met for LED lights, for which either only safety extra-low voltages SELV are used or appropriate insulation against higher voltages is provided. In addition, low weight of the LED lights is desirable.

Presentation of the invention

The object of the present invention is to create an LED light that is characterized by a simple structure and high functional reliability.

This object is achieved by the features specified in claim 1.

Particularly advantageous configurations can be found in the dependent claims.

Furthermore, the invention provides a method according to the independent method claim, which can optionally be implemented according to the features of the method subclaim.

According to an aspect of the LED lamp of the present invention, a plurality of light emitting diodes are arranged on a circuit board in the axial direction of the LED lamp. An upper shell and a lower shell are connected to each other when the LED light is installed and hold the circuit board between them. This allows a simple yet stable assembly and lightweight construction.

The LED light may contain a sheet of thermal interface material, optionally silicone oil, silicone oil-based paste, or polymer-based materials with thermally conductive filler particles such as aluminum oxide or boron nitride, which may be substantially completely wrapped around the circuit board and have holes for passage which has light-emitting diodes. This ensures efficient cooling of the light-emitting diodes and electronic components.

The lower shell can have an inner cavity for accommodating electrical or electronic components. In the upper shell, struts running at an angle can be present, the end areas of which can be in contact with the circuit board or the web of thermal interface material for position fixing. As a result, the circuit board is firmly fixed with the track and pressed against the heat sink without the need for additional bracing components.

The LED light can have openings in the lower shell or possibly also in the upper shell for components to pass through into the hollow interior of the lower shell or upper shell. The spatially protruding components can thus be accommodated countersunk, so to speak, so that a compact structure is achieved overall.

The LED light preferably has at least one, optionally two, end caps that can be placed on the axial end of the LED light and connected to the LED light, e.g. can be latched, glued or screwed. The at least one end cap can optionally have a partially cone-shaped section that can be guided from the peripheral area of the end cap to the circuit board or track and can provide light guidance to avoid light losses inside the housing.

The at least one end cap can have one or more latching lugs or other latching elements for latching with the lower shell and/or the upper shell. This allows a simple, stable and also detachable connection without other aids.

The upper shell of the LED light can have lateral indentations running in the axial direction, which can be delimited by obliquely running struts and upper shell sections running parallel to the circuit board. thereby become recessed grips formed on the side so that the upper shell can be gripped and held easily and stably, which facilitates assembly. In addition, there is a weight saving and an independent pleasing external design.

The bottom shell can optionally be shaped in cross-section, for example, in the shape of a V with an internal cavity or in the shape of a triangle with an internal cavity, so that there is efficient cooling with the possibility of housing components in the cavity. However, the lower shell can also be in the form of a T with cooling fins, for example, which results in high cooling performance.

The axial length of the lower shell can optionally be smaller than the axial length of the circuit board and/or the upper shell, with electrical and/or electronic components being able to be arranged in the area between the axial end of the lower shell and the axial end of the upper shell. An optionally semi-circular, hollow housing part can cover the components so that the components are protected and protection against electrical contact is guaranteed.

Another aspect is a method of manufacturing an LED luminary according to claim 1, wherein a circuit board is wrapped with a sheet of thermal interface material and the circuit board with sheet is sandwiched in a receiving area between a top shell, a bottom shell and the top shell and the lower shell are then connected to one another, e.g. by latching. As a result, the circuit board can be held in position with the track without the need for screwing or gluing.

One or two end caps can be applied to the axial ends of the top shell and bottom shell or an additional housing part so that the assembly is axially closed.

According to one aspect of the invention, a heat sink is used which can consist entirely of plastics with good thermal conductivity. Such a heat sink can be produced, for example, using the extrusion process, but can also be produced using other production processes, e.g. using casting technology. The heat sink allows a good thermal connection and electrical insulation over the entire length of the heat sink, since no metal heat sink components are required.

This results in a light structure, so that certain weight limits are not exceeded. In addition, it is possible to work with higher voltages above the safety extra-low voltage (SELV), so that a so-called NON SELV structure can be used.

According to a further aspect of embodiments of the invention, the driver electronics can be mounted on the same circuit board as the light-emitting diodes (LEDs). In this way, a compact structure with a positionally stable association can be ensured. The entire structure is simplified here, since the circuit board performs a double carrying function for the light-emitting diodes and the driver electronics, i.e. no separate mounting structures have to be provided.

As a result, it is largely possible to provide the light-emitting diodes up to both ends of the base, so that the entire length, including the edge regions, can be provided for an arrangement of light-emitting diodes. The electronics, such as the driver electronics, can then be installed behind the light-emitting diodes, for example on the back of the circuit board.

According to the invention, the largest possible heat transfer is achieved, i.e. efficient cooling is ensured. A thermal interface material (TIM = Thermal Interface Material) is provided for this purpose, which ensures extensive contact with the plastic heat sink and thus implements efficient heat transfer. For heat transfer that is as large as possible, a heat flow is preferably provided from the circuit board and the respective light-emitting diodes via large copper surfaces to a large web of TIM material and then on to the large-surface plastic heat sink.

character list

• 1 eine perspektivische Ansicht eines Ausführungsbeispiels einer erfindungsgemäßen LED-Leuchte;
• 2 einen Querschnitt durch die LED-Leuchte gemäß 1;
• 3 eine Lage oder Bahn aus thermischem Interface-Material (TIM) im ungefalteten Zustand;
• 4 eine Draufsicht auf die Rückseite einer Platine mit Bauteilen und unterlegtem thermischem Interface-Material in noch ungefaltetem Zustand;
• 5 eine Draufsicht auf die Platine gemäß 4 in umgekehrter Position;
• 6 einen Endbereich eines Ausführungsbeispiels der erfindungsgemäßen LED-Leuchte mit noch nicht aufgesteckter Abschlusskappe (Endstück);
• 7 eine weitere Ansicht des Endbereichs des Ausführungsbeispiels der LED-Leuchte;
• 8 ein Ausführungsbeispiel eines Kühlkörpers;
• 9 bis 13 ein weiteres Ausführungsbeispiel der erfindungsgemäßen LED-Leuchte;
• 14 bis 16 abgeänderte Ausführungsformen von Kühlkörpern bzw. Unterschalen von Ausführungsbeispielen der erfindungsgemäßen LED-Leuchte; und
• 17 bis 19 Ansichten eines weiteren Ausführungsbeispiels der erfindungsgemäßen LED-Leuchte.

The invention is to be explained in more detail below using exemplary embodiments. The figures show:

• 1 a perspective view of an embodiment of an LED lamp according to the invention;
• 2 a cross-section through the LED lamp according to FIG 1 ;
• 3 a sheet or web of thermal interface material (TIM) in the unfolded condition;
• 4 a plan view of the back of a circuit board with components and underlying thermal interface material in the unfolded state;
• 5 a top view of the circuit board according to FIG 4 in reverse position;
• 6 an end area of an exemplary embodiment of the LED light according to the invention with the end cap (end piece) not yet attached;
• 7 another view of the end portion of the embodiment of the LED light;
• 8th an embodiment of a heat sink;
• 9 until 13 another embodiment of the LED lamp according to the invention;
• 14 until 16 modified embodiments of heat sinks or lower shells of exemplary embodiments of the LED lamp according to the invention; and
• 17 until 19 Views of a further embodiment of the LED light according to the invention.

Preferred embodiment of the invention

In the 1 until 8th a first exemplary embodiment of an LED lamp 1 according to the invention is shown in a perspective view, with FIG 2 a cross section through the LED lamp 1 is shown. The LED lamp 1 has the external shape of a fluorescent lamp with a substantially circular cross section and can be used as a replacement for such fluorescent lamps. For this purpose, the electrical contacts in the end area of the LED lamp 1 can have the same configuration as the connection contacts of fluorescent lamps. The LED lamp 1 has a plurality of light emitting diodes (LEDs) 2 which are arranged in one or more rows or according to another pattern in the axial direction in succession over the entire length of the LED lamp 1 . End caps 3 are arranged at the axial ends of the LED lamp 1 .

How out 2 As can be seen, the LED lamp 1 has an upper shell 5 with an essentially semicircular cross section and a lower shell designed as a heat sink 6 also with an essentially semicircular configuration in cross section. The upper shell 5 and the heat sink 6 are in direct contact with one another in their edge regions and are, for example, latched or connected in some other way, so that a substantially circular cross section is realized in the assembled state. However, instead of a circular cross-section, any other suitable cross-sectional shape, such as an oval or polygonal shape, can also be implemented.

The heat sink 6, i.e. the lower shell, has projections 7 with thickened heads on its edge regions pointing towards the upper shell, which engage in corresponding recesses 8 in the upper shell 5 and hook and latch there with corresponding inwardly projecting hook-shaped projections 9. This ensures stable mutual contact between the upper shell 5 and the heat sink 6 over the entire or at least a large part of the length of the LED lamp.

The upper shell 5 has V-shaped inner struts 11 which are stabilized by cross struts 12 . The row of light-emitting diodes 2 in FIG 2 positioned in an apparent manner. The base points of the inner struts 11 also form contact surfaces for receiving and supporting a circuit board carrying the light-emitting diodes 2, which is completely or at least partially surrounded by a web or layer 14 made of thermal boundary layer or interface material (TIM, thermal interface material). The sheet 14 of thermal interface material may optionally be silicone oil, silicone oil impregnated paste, or, for example, polymer-based materials with thermally conductive filler particles such as alumina or boron nitride. The web 14 can be essentially completely wrapped around the circuit board 13 and has holes 16 for the passage of the light-emitting diodes 2 .

One or more electrical or electronic components 15 are arranged on the underside of circuit board 13 .

In the exemplary embodiment shown, the upper shell 5 and/or the heat sink 6 are designed as plastic parts that can be produced by injection molding. The plastic upper shell 5 and the plastic heat sink 6 together form the housing of the LED light and act as a heat sink for the heat generated on the circuit board 14 . The light emitted by the light-emitting diodes 2 escapes to the outside through the upper shell 5, which consists at least partially or completely of transparent material. The upper shell 5 can optionally also take on the task of an optical system, by means of which the emitted light beams are bundled or deflected in the desired way.

In order to transfer the heat generated by the light-emitting diodes 2 and the electronics, ie the electronic components 15, to the two heat sinks 5, 6 over as large an area as possible, the entire circuit board 13 is wrapped with the web or layer 14 of thermal interface material. In order to use the thermal interface material 15 (see 3 adapted to the construction in a developed representation), holes 16 are punched or incorporated, for example in the form of a perforated strip or perforated pattern. The light-emitting diodes 2 can pass through the holes 16 of the hole pattern, so that the light emission is unhindered. The complete assembly including circuit board 13, LEDs 2 and electronic components 15 is in the manufacture of the LED lamp 1 in these by the thermal cal interface material formed punched tape inserted. this is in 4 shown. The board 13 is placed with its front side on the web 14 so that the back of the board with the components 15 points upwards (according to 4 ). The web 14 is then folded over the side edges of the board 13 so that the board is completely or at least for the most part encased by the web 14 . The web 14 can optionally also have recesses for the electronic components 15, so that the web 14 can be folded around the back of the circuit board without any creases and can cover the back over a large area. This ensures very efficient heat transfer between the circuit board 13 and the components in contact with the outside of the track 14, in particular to the heat sink 6 and the upper shell 5.

The heat sink 6 has, as in 2 is shown, a transverse wall 20, which serves as a support surface for the circuit board 13 and the circuit board 13 wound track 14. This ensures extensive contact between the track 14 and the transverse wall 20 of the heat sink 6, so that an efficient flow of heat to the outwardly cooling outer regions of the heat sink 6, in particular its outer wall with a semicircular cross section, is ensured.

How out 2 As can be seen, the cross braces 12 are shaped in such a way that cavities 21 are formed underneath them, in which any components present on the circuit board 13, for example wired components on the component side of the circuit board, can be accommodated. This allows the use of wired components on the according 2 upper side of the board, so that free space for the wire ends on the LED side, ie the side carrying the light-emitting diodes 2, is present. The outer, downward-angled areas of the cross braces 12 and the bases of the inner braces 11 hold the circuit board 13 in a stable position with the sheet 14 wrapping it and press it onto the transverse wall 20 of the heat sink 6, so that there is good thermal contact and no position shifts in the Board 13 can occur.

In 5 individual production steps for producing the exemplary embodiment of the LED light 1 according to the invention are shown. 5 shows the board 13 with light-emitting diodes 2 on the front 2 and electronic components 15 on the back of the board 13.

To encase the circuit board 13 with the sheet 14 of thermal interface material, the sheet 14 is bent around the circuit board 13 and around the electronic components, i. So that the circuit board 13 prepared in this way can be brought together with the web 14 with the lower shell, i.e. the heat sink 6, recesses 22 are punched into the lower shell and, more precisely, into the transverse wall 20, corresponding to the arrangement of the electronic components 15 or introduced so that the components 15 can pass through the transverse wall 20 downwards and the back of the board with web 14 can lie flat on the transverse wall 20 with extensive contact.

In one or more embodiments of the invention, the recesses 22 are kept slightly larger than the electronic components 15 so that the thermal interface material of the trace 14 between the electronic components 15 and the bottom shell, i.e. the heatsink 6, does not present any problems. In one or more other embodiments, the thermal interface material sheet 14 corresponding to the electronic components 15 is die cut.

With the recesses 22, two or more, e.g. four, openings 23 can also be made in the heat sink 6, i.e. the lower shell, preferably in the transverse wall 20, into which one of the two end caps 3 can be snapped. In this way, screwing or gluing of the respective end caps 3 can be avoided.

The end caps 3 provide a clean end to the light-emitting diodes 2 and to the optics side and ensure the desired touch protection at the transition between the base and electrically conductive components. Optionally, a conventional metallic lamp base (not shown) for fluorescent tubes can be pressed onto the end caps 3 in order to achieve the electrical contact between the lamp and the power supply.

In 8th the lower shell, ie the heat sink 6, with the recesses 22 and the holes 23 is shown as a detail.

6 shows the end cap 3 and the associated front edge area of the upper shell 5 and the lower shell, ie the heat sink 6, in an exploded view. The end cap 3 is pushed onto the edge area of the upper and lower shell in the axial direction and latches there via the holes 23 and corresponding latching hooks of the end cap 3 in the desired target position in a stable manner.

7 shows the fully assembled state of the end cap 3. The end cap has a funnel-shaped or conical or parabolic area 25 which forms a transition between the peripheral edge of the end cap and the edge forms the area of the circuit board 13 and can be in contact with the inner struts 11 in the assembled state. In this way, stable light emission can be ensured while avoiding edge losses, since light emitted at the edge is also deflected upwards and exits from the LED light 1 .

In the representation according to 7 the upper shell 5 is not yet assembled, ie not yet snapped on.

At the same time, the conically running inner struts 11 also provide light guide surfaces, so that the light beams generated by the light-emitting diodes 2 can have a conical exit profile. The inner struts 11 can optionally be internally mirrored in the direction of the light-emitting diodes 2, so that a complete reflection of the generated light is achieved and thus a complete exit of light to the outside is ensured.

In the 9 until 13 a further exemplary embodiment of an LED lamp 1 according to the invention is shown. The embodiment according to 9 fully agrees with the exemplary embodiment according to FIG 1 match. What is different, however, is the shape of the upper shell 28, which in contrast to the upper shell 5 according to 1 is not designed as a semicircle (in cross section), but has lateral free spaces 26 through corresponding indentations in the upper shell 25 . Through these lateral free spaces 26, the heat is given off to the outside air in a more direct way, so that even more efficient cooling is achieved. The wall of the upper shell 25 has a region 27 running inwards from the latching region parallel to the transverse wall 20, which then merges into the conically widening inner struts 11 (see Fig 9 ) transforms.

In 9 the wall area 27 of the outer wall of the upper shell 28 running parallel to the circuit board 13 is present symmetrically on both sides of the upper shell 28 and transitions into the inner bracing area 11 which, in the exemplary embodiment according to FIG 9 also defines an outer wall area. This design not only ensures an effective cooling performance, but also achieves weight savings at the same time. The light exit angle is the same as in the embodiment according to FIG 1 defined by the light-emitting diode characteristics of the light-emitting diodes 2 and adjusted in such a way that the conical opening angle of the strut areas 11 matches or defines the desired radiation characteristics, e Light-emitting diodes 2 or the area between the outer end points of the strut areas 11 is transparent or at least partially translucent for light to exit.

In 10 is a perspective view of the entire LED lamp, but without the end caps 3 fitted. the inside 9 The cross section shown extends over the entire axial length of the LED lamp, so that the lateral indentations 26 run over the entire axial length. At the same time, these indentations 26 also make it easier to grip the upper shell during assembly or during installation of the entire, fully assembled LED light at the desired place of use.

In 11 a further exemplary embodiment of an end cap 31 is shown, which can be designed in the same way as the end cap 3 and, in particular, also for use in the LED light according to FIG 9 with a modified upper shell shape is suitable.

The end cap 31 has a semicircular, hollow base section 32 which carries two latching lugs 33 on its upper side. The number of locking lugs can also be greater or less than two. To mount the end cap 31 on the LED light according to 9 , 10 the end cap 31 is axially corresponding to the axial edge of the LED lamp 10 pushed on, whereby the base projection 32 enters the heat sink 6 and is located there with the latching lugs 33 in the recesses 23 (see e.g 7 ) snaps into place and then lies flush. The end cap 31, like the end cap 3, has an upper curved area 34, which delimits the parabola-shaped section 25 at the top and can be pushed into the upper shell 28 together with the base projection 32, with the lateral edge areas of the area or projection 34 on the struts 11 come to the facility.

12 shows the embodiment according to FIG 9 - 11 in a state in which the end cap 31 is assembled with the heat sink 6 and the circuit board 13 with the light-emitting diodes 2 and track 14 has already been placed on the heat sink 6 . In this case, the circuit board 13 does not have to be specially fastened, for example screwed or glued, but can simply be placed on it. The circuit board 13 is preferably fixed by the upper shell 28, which clamps the circuit board in the desired position in the assembled state. The upper shell 28 is at 12 not yet mounted. The latching lugs 33 are snapped into the recesses 23 so that the end cap 31 is captively mounted.

13 shows the edge area of the fully assembled LED lamp according to the 9 until 12 with mounted upper shell 28.

In the 14 until 16 different variants for the lower shell (6), ie the heat sink, are shown. In the embodiments according to 14 until 16 the upper shell 28 is in accordance with the embodiment according to FIG 9 designed. Alternatively, the upper shell can also correspond to the upper shell 5 of the exemplary embodiment 1 , or in another way, be configured.

This in 14 The illustrated embodiment has a lower shell 40 in the form of a V, provided with the reference number 43, with an internal cavity 44, which is formed essentially symmetrically to the center plane of the LED lamp. The lower shell 40 contains horizontal lateral legs 41 which are in close contact with the circuit board 13 or the track 14 and thereby ensure effective heat transfer from the circuit board 13 via the track 14 into the lower shell 40 serving as a heat sink. The lower shell 40 can be snapped into the upper shell 28 via the thickened portions 42 on the edge and is therefore firmly connected to the latter in a detachable manner. One or more components, for example the electronic components 15, can be accommodated in the cavity 44 of the V-shaped central part 43 of the lower shell 40. This design results in a compact, lightweight design with good heat dissipation.

In the embodiment according to 15 For example, the lower shell 50 is designed in the form of a T-shaped carrier 51, which contains side limbs 52 running parallel to the circuit board 13 and lying tightly against the web 14 and a centrally arranged limb 53 protruding therefrom at right angles. To increase the heat dissipation surface, there are two symmetrically arranged extensions 54 that are oriented obliquely to the circuit board 13 and serve as cooling fins.

Due to the shortened heat paths in the embodiments according to the 14 until 16 the thermal behavior is further improved, ie the operating temperature is further reduced. In the embodiment according to 15 or in the other embodiments according to 14 , 16 the electronics can be housed in specially manufactured housing parts made of plastic, as is the case, for example, in the exemplary embodiments according to FIGS 17 until 19 is shown.

The attachment of the outer caps 3, 31, which can be designed according to the designs described and drawn above, can be done, for example, by screwing in channels (see e.g 17 , Channels 70), via gluing or in any other way.

All variants and embodiments described meet all the main specifications for a possible next generation of LED lights, for example in the form of LED Retro Fit Tubes. On the one hand, this includes a NON-SELV structure, i.e. a design with voltages above 50 V, a completely continuous LED optic, a light (plastic) and a cost-effective structure. The thermal interface material also makes it possible to dispense with additional circuit boards, e.g. made of ceramic or with a metal core, and also with an aluminum heat sink.

When designing according to 16 For example, the lower shell 60 is designed in the form of a V-shaped cross-section triangle containing an internal V-shaped triangle cavity 61 defined by outer V-shaped walls 62 symmetrically disposed and parallel to the board 13, close to the web 14 adjacent horizontal legs 63 is limited.

In the 17 until 19 Another exemplary embodiment is shown, which can have an upper shell 28 in accordance with the above explanations or also a different type of upper shell. The circuit board 13 with the sheet 14 of thermal interface material wrapping it is inserted into the upper shell 28, with the back of the circuit board 13, as in FIG 17 is shown, parts 15 are attached in the form of electronic components or other devices. The lower shell is designed in the form of a lower shell 71 according to the design 16 may have, but for example also in the embodiment according to the 14 or 15 or can be formed in some other way. In contrast to the embodiment according to 16 the lower shell 71 is not extended over the entire length of the lamp to the edge area of the light, but ends, as in 17 is shown at a distance from the edge area of the LED lamp, which corresponds to the axial edge end of the upper shell 28 . The components 15 are accommodated in this free space between the edge-side end of the lower shell 71 and the edge-side end of the circuit board 13 . In the embodiment according to the 17 until 19 a specially manufactured housing part 72 made of plastic is provided, which can be designed, for example, as a semicircle that is open on the inside and the components 15 encloses. The side edges of the housing part 72 are designed in the same way as the side edges of the lower shell 71 so that the housing part 72 can snap or engage in the upper shell 28 . The length of the housing part 72 is dimensioned such that it extends from the edge-side end of the lower shell 71 to the edge-side end of the LED lamp (without end caps). Alternatively, the housing part 72 can also be made longer, so that it at least partially spans the lower shell 71 . The end caps 31 can be attached by screwing them into the channels 70 ( 17 , 18 ) of the upper shell 28 or in some other way, for example by gluing.

Claims (10)

LED light with a circuit board (13) on which a plurality of light-emitting diodes (2) are arranged in the axial direction of the LED light, an upper shell (5, 28) and a lower shell (6, 40, 50, 60, 71), which are connected to one another in the assembled state of the LED light and hold the circuit board (13) between them, with a web (14) of thermal interface material which essentially completely surrounds the circuit board and has holes for the light-emitting diodes to pass through, wherein the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) together form a housing of the LED light and act as a heat sink for the heat generated on the circuit board, and the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) is in contact with the outside of the sheet (14) of thermal interface material when the lamp is assembled. LED light after claim 1 , in which the lower shell (6, 40, 60) has an inner cavity (44, 61) for accommodating electrical or electronic components (15), and in which the upper shell (5, 28) contains diagonal struts (11), the end regions of which are in contact with the web (14) of thermal interface material for positional fixing. LED light after claim 2 , in which the lower shell (6, 40, 60) has openings (22) for the passage of components (15) into the inner cavity (44, 61) of the lower shell (6,40, 60). LED light according to one of the preceding claims, with at least one end cap (3, 31) which can be placed on the axial end of the LED light and can be connected to the LED light, e.g. can be latched, glued or screwed, and optionally a conical one extending portion (25) which is guided from the peripheral area of the end cap (3, 31) to the circuit board (13) or track (14). LED light after claim 4 , in which the end cap (3, 31) has one or more latching lugs (33) for latching with the lower shell (6, 40, 50, 60, 71) and/or the upper shell (5, 28). LED light according to one of the preceding claims, characterized in that the upper shell (28) has lateral indentations (26) running in the axial direction, which are delimited by obliquely running struts (11) and upper shell sections (27) running parallel to the circuit board (13). . LED lamp according to one of the preceding claims, in which the lower shell (40, 50, 60, 71) in cross section in the form of a V with an internal cavity (44), in the form of a triangle (62) with an internal cavity (61) or in Shape of a T with cooling fins (53, 54) is formed. LED light according to one of the preceding claims, in which the axial length of the lower shell (71) is smaller than the axial length of the circuit board (13) and/or the upper shell (28), with electrical and/or electronic components (15) in Area between the axial end of the lower shell (71) and the axial end of the upper shell (28) are arranged, wherein a hollow housing part (72), which is optionally semi-circular in cross section, the components (15) covers. A method of manufacturing an LED lamp as claimed in any preceding claim, wherein the circuit board (13) with the web (14) of thermal interface material is wrapped and the circuit board (13) with web (14) in a receiving area between the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) is inserted and the upper shell (5, 28) and the lower shell (6, 40, 50, 60, 71) then, e.g. by latching , are connected to one another, as a result of which the circuit board is held in a fixed position with the web (14). procedure after claim 9 , in which one or two end caps (3, 31) are applied to the axial ends of the upper shell (5, 28) and lower shell (6, 40, 50, 60, 71) or an additional housing part (72).

Images