DE102019135144A1 - Light module for an insect trap - Google Patents

Abstract

The invention relates to a lighting module (10), comprising at least one and preferably exactly one lens body (30) with at least one lens (31), at least one and preferably exactly one carrier plate (20) with at least one lighting means (23) and at least one and for example exactly one or exactly two heat sinks (11). A locking connection device (35) is formed integrally with the lens body (30) and / or the associated cooling body (11) and establishes a locking connection between the lens body (30) and the assigned cooling body (11). The carrier plate (20) with the at least one illuminant (23) is held between the lens body (30) and the associated heat sink (11).

Description

The invention relates to a light module with a plurality of light sources, in particular semiconductor light sources, for example light emitting diodes. The lighting module also has a heat sink for heat dissipation and a lens body with at least one lens for focusing the light emitted by the lamps.

The light module can be used in particular as part of an insect trap. For this application, the light module can have light sources which at least also and in particular mainly emit ultraviolet light and are referred to as UV light module. The illuminants can, for example, also emit visible light in a wavelength range close to UV.

In the case of light modules, it is known to fasten the light-emitting diodes or lens bodies on a carrier or substrate, for example by pouring them in. Luminaires are also known in which a carrier or a substrate with illuminants is attached to a component of a luminaire by additional fastening means.

Starting from the prior art, it can be regarded as an object of the present invention to provide a very simply designed lighting module that can be flexibly adapted to it and that can be easily installed.

This object is achieved by a light module with the features of claim 1.

The light module according to the invention has at least one heat sink with a contact surface. The support surface extends in a longitudinal direction and at right angles to the longitudinal direction in a transverse direction. The contact surface is preferably, at least in sections, aligned parallel to a plane which is spanned by the longitudinal direction and the transverse direction. Preferably, there are no projections and / or steps within the outer contour of the support surface. In one embodiment, one or more holes in the heat sink can open into the bearing surface.

The lighting module also has at least one carrier plate with a base area. The base surface is set up to be connected directly or indirectly to the support surface and thereby to make a flat, heat-conducting contact between the base surface of the carrier plate and the support surface of the heat sink. For this purpose, the base surface can be in direct contact with the support surface or, alternatively, can be connected in a heat-conducting manner between the base surface and the support surface by means of a heat-conducting intermediate layer.

The heat-conducting intermediate layer can be self-adhesive on both sides. For example, a tape-like element that is self-adhesive on both sides can be used as the heat-conducting intermediate layer.

The light module also has several light sources. In a preferred application, at least one of the lamps is set up to emit at least also and in particular mainly ultraviolet light (UV light). Preferably only illuminants are available which at least also and in particular mainly emit UV light. The at least one illuminant can, for example, also emit visible light in a wavelength range close to UV. The lamps are formed by semiconductor lamps or have semiconductor lamps. For example, a light-emitting diode can be used as the semiconductor light-emitting means, in particular a UV light-emitting diode.

The illuminants are arranged on a carrier surface of the at least one carrier plate opposite the base surface. The carrier plate can be a circuit board, for example. The carrier plate can have conductor tracks for electrical contacting of the illuminants on the carrier surface and / or in an intermediate layer between the carrier surface and the base surface.

The light module also includes at least one lens body. The lens body has at least one and preferably a plurality of lenses.

A latching connection, optionally a releasable latching connection, is produced by means of a latching connection device between the at least one lens body and the at least one heat sink, as a result of which the at least one lens body is held on at least one heat sink. The snap-in connection device is preferably an integral part of the lens body and / or the heat sink. Manufactured locking connection, the at least one carrier plate is held between the at least one lens body and the at least one heat sink.

A separate attachment of the at least one carrier plate is not necessary. The carrier plate can be clamped by means of the latching connection between the at least one lens body and the at least one heat sink and can preferably be pressed against the heat sink with a pressing force in order to produce good heat-conducting contact.

• - genau eine Trägerplatte vorhanden sein, die als Verbindungsbauteil für mehrere Linsenkörper und/oder mehrere Kühlkörper dient;
• - genau ein Kühlkörper vorhanden sein, der als Verbindungsbauteil für mehrere Linsenkörper und/oder mehrere Trägerplatten dient;
• - genau ein Linsenkörper vorhanden sein, der als Verbindungsbauteil für mehrere Kühlkörper und/oder mehrere Trägerplatten dient.

In the simplest case, the light module has exactly one carrier plate, exactly one heat sink and exactly one lens body. The heat sink and / or the carrier plate and / or the lens body is preferably present exactly once in a light module. In this embodiment, the component, which is only present once, serves as a connecting component on which several other components can be arranged. This eliminates the need for additional mechanical connecting means. For example

• - Exactly one carrier plate is present, which serves as a connecting component for several lens bodies and / or several heat sinks;
• - Exactly one heat sink is available, which serves as a connecting component for several lens bodies and / or several carrier plates;
• - Exactly one lens body be present, which serves as a connecting component for several heat sinks and / or several carrier plates.

If, for example, several separate heat sinks are used, they can be connected to the one or more lens bodies via the snap-in connection device and are automatically held on the single carrier plate. Additional connecting means for connecting the plurality of heat sinks to one another can be omitted.

In another example of a light module, exactly one heat sink can be present. A plurality of carrier plates and / or a plurality of lens bodies can be attached to this heat sink without additional connecting means being necessary in order to connect the carrier plates and / or the heat sink to one another.

In all of the exemplary embodiments, the latching connection device is sufficient to produce the mechanical coupling between the at least one carrier plate, the at least one lens body and the at least one heat sink.

The heat sink can have a plurality of rod-shaped and / or rib-shaped cooling elements arranged at a distance from one another for heat dissipation. The cooling elements can be present in the transverse direction next to the support surface and / or on an underside of the heat sink opposite the support surface. The cooling body is preferably free of cooling elements in the longitudinal direction next to the contact surface.

The at least one heat sink can be formed, for example, by an extruded profile.

In a preferred embodiment, the at least one heat sink can be made from aluminum and / or a ceramic and / or from copper or another material, the thermal conductivity of which is preferably greater than 100 W / (m * K), preferably greater than 200 W / ( m * K).

In a preferred embodiment of the lighting module, the heat sink has two latching edges which lie opposite one another in the transverse direction and are preferably formed on a cooling fin in each case. The locking edges are part of the locking connection device. The locking edges extend parallel to one another in the longitudinal direction. The latching edges preferably extend in the longitudinal direction over the entire length of the heat sink.

In one embodiment, each latching edge can be formed by a curved and / or angled edge of a side wall or a cooling fin of the heat sink.

The latching edges are preferably arranged at a distance from the contact surface in a height direction that is oriented at right angles to the longitudinal direction and at right angles to the transverse direction. The latching edges can have a spacing in the transverse direction that is smaller compared to a width of the heat sink and / or the support surface in the transverse direction.

In a preferred embodiment, the latching connection device has at least two elastically deformable latching tongues. The latching tongues are arranged at a distance from one another in the transverse direction, preferably on the at least one lens body. In the longitudinal direction, the lens body can have a plurality of latching tongues arranged next to one another on one side or on both sides opposite one another in the transverse direction. In a preferred embodiment, can be in the transverse direction Q two locking tongues lie opposite, each forming a pair of locking tongues. Several such pairs of locking tongues can be arranged next to one another in the longitudinal direction at a distance.

The latching tongues preferably extend obliquely or at right angles relative to the contact surface of the at least one heat sink.

The at least one lens body can have two longitudinal edges that are spaced apart in the transverse direction and extend in the longitudinal direction. Each longitudinal edge can have at least one recess, in each of which a latching tongue is arranged. The latching tongue is arranged in the recess in an elastically deformable or pivotable manner on the lens body.

Each latching tongue can have a latching projection at its free end, which protrudes in particular, at least also in the transverse direction. With this locking projection, the locking tongue on one attack the associated counterpart of the locking connection device to produce the locking connection.

In one embodiment, the latching tongues can have a distance in the transverse direction adjacent to the latching projections that is at least as large as the width of the at least one heat sink in the transverse direction. The heat sink can therefore be held adjacent to the locking projections between the locking tongues and the locking projections can engage an edge or corner of the heat sink in order to produce the locking connection. The distance between the locking projections in the transverse direction is smaller than the width of the at least one heat sink in the transverse direction. For example, the snap-in projections can engage a snap-in connection made on an underside of the at least one heat sink opposite the support surface.

Each lens body with a plurality of lenses is preferably integrally formed in one piece without a seam and joint. Each lens body is preferably made of a plastic, such as polymethyl methacrylate.

In one exemplary embodiment of the lighting module, the latching tongues have a spacing in the transverse direction that is smaller at each point than the width of the at least one heat sink and in particular the width of the contact surface in the transverse direction. The latching projections can engage one of the latching edges of the heat sink when the latching connection is established.

The illuminants or at least a part of the illuminants can be set up to emit ultraviolet light, as a result of which a UV luminous module is formed. A UV light module or several UV light modules can be part of an insect trap.

• 1 ein Ausführungsbeispiel eines Leuchtmoduls in einer perspektivischen Darstellung,
• 2 das Leuchtmodul aus 1 in einer perspektivischen Explosionsdarstellung,
• 3 und 4 ein weiteres Ausführungsbeispiel eines Leuchtmoduls in unterschiedlichen perspektivischen Darstellungen,
• 5 das Leuchtmodul aus den 3 und 4 in einer perspektivischen Explosionsdarstellung, und
• 6 eine vergrößerte Darstellung des Bereichs VI in 5.

Advantageous embodiments of the invention can be found in the dependent patent claims, the description or the drawing. Preferred exemplary embodiments of the invention are explained in detail below with reference to the accompanying drawings. The drawings show:

• 1 an embodiment of a light module in a perspective view,
• 2 the light module off 1 in an exploded perspective view,
• 3 and 4 another embodiment of a light module in different perspective views,
• 5 the light module from the 3 and 4 in an exploded perspective view, and
• 6 an enlarged view of the area VI in 5 ,

Exemplary embodiments of a light module are shown in the drawings 10 illustrates the at least one heat sink 11 with a contact surface 12 having. The at least one contact surface 12 extends in a longitudinal direction L as well as perpendicular to the longitudinal direction L in a transverse direction Q , The at least contact surface is preferably 12 flat and has no protrusions. In the embodiment according to the 3 to 6 is the contact surface 12 Continuously, continuously and without edges. In the embodiment of the light module 10 according to the 1 and 2 lead to holes 13 in the contact surface 12 , The holes 13 are optional and can be omitted. The longitudinal direction L can be a single heat sink 11 along the entire light module 10 extend ( 3 and 4 ). Alternatively, several heat sinks can be used 11 longitudinal L be arranged side by side.

The heat sink 11 can be used as a casting ( 1 and 2 ) or as an extruded profile ( 3 and 4 ) be made. It consists of a heat-conducting material, for example aluminum, an aluminum alloy or ceramic.

Every heat sink 11 has a plate part in the embodiment 14 , On the plate part 14 is the contact surface 12 available. On one under the contact surface 12 opposite bottom 15 of the plate part 14 are several cooling elements 16 arranged. The cooling elements 16 are at the in the 1 and 2 illustrated embodiment rod-shaped and extend essentially in a height direction H perpendicular to the longitudinal direction L and perpendicular to the cross direction Q , As especially in 2 you can see the cooling elements 16 for example only on the underside 15 of the plate part 14 arranged. This allows multiple heat sinks 11 with their respective plate parts 14 string together very easily.

The light module 10 also has at least one carrier plate 20 and exactly one carrier plate in the exemplary embodiment 20 on. The carrier plate 20 has a footprint 21 that of the bearing surface 12 of the at least one heat sink 11 is facing and directly or indirectly on the contact surface 12 is applied. On one of the base areas 21 the carrier plate has the opposite side 20 a support surface 22 on. On the support surface 22 are several lamps 23 , preferably semiconductor light sources and, for example, light-emitting diodes arranged.

The footprint 21 is preferably flat and extends parallel to the support surface 12 , for example parallel to a plane through the longitudinal direction L and the cross direction Q is spanned. The carrier surface is preferred 22 parallel to the base 21 the carrier plate 20 arranged.

On the support surface 22 or in intermediate layers between the base area 21 and the support surface 22 can the carrier plate 20 Conductor tracks for electrical contacting of the lamps 23 exhibit. The carrier plate 20 can be formed by a circuit board.

Like it out 2 is in one embodiment of the light module 10 a heat-conducting intermediate layer 24 between the base 21 and the contact surface 12 arranged. The heat-conducting intermediate layer 24 can optionally be designed to be double-sided adhesive, so that an adhesion-promoting connection between the carrier plate 20 and the at least one heat sink 11 is made. This bond connection is optional.

In another embodiment, as particularly in 4 the base area is visible 21 the carrier plate 20 directly on the contact surface 12 of the heat sink 11 on.

Every light module 10 also has at least one lens body 30 and, for example, exactly one lens body 30 on. The lens body 30 is made integrally from a uniform material, in particular from plastic, for example polymethyl methacrylate (PMMA). The lens body 30 has several integrated lenses 31 , the number of lenses 31 is, for example, the same size as the number of lamps 23 , The arrangement of the lenses 31 on the lens body 30 corresponds to the arrangement of the lamps 23 on the support surface 22 the carrier plate 20 , In the exemplary embodiments illustrated here, the illuminants are 23 and the lenses 31 longitudinal L spaced apart along a common straight line. At least on the lenses 31 is the lens body 30 transparent to that of the bulbs 23 emitted light.

In the exemplary embodiment, the lamps are 23 set up for the emission of ultraviolet light (UV light), so that the light module 10 can be referred to as a UV light module.

For mechanical connection of the components of the light module 10 serves a locking connection device 35 , The locking connection device 35 has several locking tongues 36 on that is integral to the lens body 30 are trained.

Every latch tongue 36 has a base section, for example 37 , from which the locking tongue 36 to a free end 38 extends. The latches 36 are with the base section 37 integral with the rest of the lens body 30 connected. At the free end 38 has every latch 36 a locking tab 39 that is in the transverse direction Q protrudes. The latches 36 are elastically deformable, so that the locking projection 39 can perform a pivoting movement about a pivot axis that extends in the longitudinal direction L extends.

In the exemplary embodiments illustrated here, the lens body 30 on its the heat sink 11 facing side two itself in the transverse direction Q by far opposite and in the longitudinal direction L extending longitudinal edges 40 , In every long edge 40 is at least a recess 41 , Every latch tongue 36 is, for example, in one of the recesses 41 arranged. Inside the recess 41 can the locking tongue 36 be elastically deformed to the respective locking projection 39 to pan.

The lens body 30 has at least two locking tongues, which are in the transverse direction Q are opposite each other. At least three or four latching tongues are preferred 36 available. For example, the locking tongues can form locking tongue pairs, each locking tongue pair two in the transverse direction Q by far opposite latching tongues 36 having.

In the in the 1 and 2 The embodiment shown is the distance between the locking tongues 36 in the transverse direction Q adjacent to the locking projections 39 at least as large as the width of the plate part 14 of the at least one heat sink 11 , When the locking connection of the locking connection device is established 35 the locking tongues extend 36 starting from the base section 37 along the side edge of the plate part 14 of the at least one basic body 11 and the locking tabs 39 grab at the bottom 15 of the plate part 14 to make the locking connection. The plate part 14 of the at least one heat sink 11 so to speak in the transverse direction Q embraced opposite sides. This creates a non-positive and positive connection. Through the snap connection between the lens body 30 and the at least one heat sink 11 is also the carrier plate 20 between the lens body 30 and the at least one heat sink 11 held. Additional fasteners for attaching the carrier plate 20 on the lens body 30 and / or also on the at least one heat sink 11 can be omitted.

In the in the 3 to 6 illustrated embodiment of the light module 10 points the heat sink 11 two in the transverse direction Q opposite locking edges 45 on that especially in 3 are recognizable. The locking edges 45 extend parallel to each other in the longitudinal direction L along the entire heat sink 11 , The locking edges 45 are, for example, by an angled and / or bent edge 46 a side wall 47 educated. The side wall 47 is in the embodiment opposite the height direction H and the cross direction Q inclined and extends in the longitudinal direction L , In the area of the locking edges 46 have the side walls 47 in the transverse direction Q the smallest distance and extend from the area of this edge 46 diagonally away from each other. The sidewalls 47 can be rib-shaped cooling elements 16 form.

In this embodiment, the locking projections 39 of the locking tongues 36 of the lens body 30 in the transverse direction Q a distance that is smaller than the width of the heat sink 11 and especially the plate part 14 in the transverse direction Q , The locking device 35 is in the embodiment by the locking edges 45 and the latches 36 educated. The latches 36 extend obliquely to the height direction H and obliquely to the transverse direction Q , with the locking projections 39 are aligned so that they are transverse to each other Q opposite longitudinal edge 40 or locking tongue 36 point away. When a locking connection is established, one or more locking projections lie on an associated locking edge 45 on.

In the in the 3 to 6 illustrated embodiment, the light module 10 from exactly one lens body 30 , exactly one carrier plate 20 and exactly one heat sink 11 , The locking connection device 35 is an integral part of the lens body 30 and the heat sink 11 ,

The heat sink 11 has in the embodiment according to the 3 and 4 rib-shaped cooling elements 16 that from the bottom 15 of the plate part 14 protrude at right angles or at an angle and, for example, in the longitudinal direction L extend.

In all of the exemplary embodiments, at least those in the longitudinal direction are preferred L opposite ends of the plate part 14 free of cooling elements 16 , Several light modules can be attached to these ends 10 or more heat sinks 11 to be strung together.

The invention relates to a light module 10 , having at least one and preferably exactly one lens body 30 with at least one lens 31 , at least one and preferably exactly one carrier plate 20 with at least one lamp 23 and at least one and for example exactly one or exactly two heat sinks 11 , A locking connection device 35 is integral with the lens body 30 and / or the associated heat sink 11 formed and provides a snap connection between the lens body 30 and the associated heat sink 11 ago. The carrier plate 20 with the at least one lamp 23 is between the lens body 30 and the associated heat sink 11 held.

LIST OF REFERENCE NUMBERS

10

light module

11

heatsink

12

bearing surface

13

hole

14

plate part

15

bottom

16

cooling element

20

support plate

21

Floor space

22

support surface

23

Lamp

24

interlayer

30

lens body

31

lens

35

Locking connection device

36

catch tongue

37

Base section of the locking tongue

38

free end of the locking tongue

39

catch projection

40

longitudinal edge

41

recess

45

catch edge

46

edge

47

Side wall

H

height direction

L

longitudinal direction

Q

transversely

Claims (16)

Luminous module (10) comprising: at least one heat sink (11) with a support surface (12) which extends in a longitudinal direction (L) and at right angles thereto in a transverse direction (Q), at least one support plate (20) with a base surface (21) which is in flat, heat-conducting contact with the support surface (12), a plurality of lamps (23) on a support surface (22) opposite the base surface (21) of the at least one support plate (20) are arranged at least one lens body (30) which has a plurality of lenses (31) and which is fastened to the at least one heat sink (11) by means of a snap-in connection device (35), so that the at least one carrier plate (20) between the at least one a lens body (30) and the at least one heat sink (11) is held. Light module after Claim 1 , characterized in that the at least one heat sink (11) is formed by an extruded profile. Light module after Claim 1 or 2 , characterized in that the at least one lens body (30) consists of plastic. Luminous module according to one of the preceding claims, characterized in that the at least one heat sink (11) has two latching edges (45) of the latching connection device (35) which lie opposite one another in the transverse direction (Q) and extend in the longitudinal direction (L). Light module after Claim 4 , characterized in that each latching edge (45) is formed by a curved and / or angled edge (46) of a side wall (47) of the heat sink (11). Luminous module according to one of the preceding claims, characterized in that the latching connection device (35) has at least two elastically deformable latching tongues (36) which are arranged in the transverse direction (Q) at a distance from one another on the at least one lens body (30). Light module after Claim 6 , characterized in that the latching tongues (36) of the at least one lens body (30) extend obliquely or at right angles to the contact surface (12) of the at least one heat sink (11). Light module after Claim 6 or 7 characterized in that the at least one lens body (30) has two longitudinal edges (40) which are spaced apart in the transverse direction (Q) and extend in the longitudinal direction (L), each longitudinal edge (40) having at least one recess (41), in each of which one of the locking tongues (36) is arranged. Light module according to one of the Claims 6 to 8th , characterized in that each latching tongue (36) has a projecting latching projection (39) at its free end. Light module according to one of the Claims 9 , characterized in that the locking tongues (36) adjacent to the locking projections (39) in the transverse direction (Q) are at least as large as the width of the at least one heat sink (11) in the transverse direction (Q). Light module after Claim 10 , characterized in that the latching projections (39), when the latching connection has been made, engage on at least one heat sink (11) on an underside (15) opposite the bearing surface (12). Light module according to one of the Claims 9 , characterized in that the locking projections (39) of the locking tongues (36) in the transverse direction (Q) have a distance which is smaller than the width of the at least one heat sink (11) in the transverse direction (Q). Light module and after Claim 4 or 5 and after Claim 9 or 12 , characterized in that the locking projections (39) engage on one of the locking edges (45) when the locking connection is established. Luminous module according to one of the preceding claims, characterized in that the at least one heat sink (11) has a plurality of spaced-apart and / or rib-shaped cooling elements (15), the at least one heat sink (11) in the longitudinal direction (L) next to the contact surface (12) is free of cooling elements (15). Luminous module according to one of the preceding claims, characterized in that the luminous means (23) are set up to emit ultraviolet light. Insect trap comprising at least one light module Claim 15 ,

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